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405ff31e31
haproxy/src/ssl_sock.c
Emmanuel Hocdet 405ff31e31 BUG/MINOR: ssl: assert on SSL_set_shutdown with BoringSSL 
With BoringSSL:
SSL_set_shutdown: Assertion `(SSL_get_shutdown(ssl) & mode) == SSL_get_shutdown(ssl)' failed.

"SSL_set_shutdown causes ssl to behave as if the shutdown bitmask (see SSL_get_shutdown)
were mode. This may be used to skip sending or receiving close_notify in SSL_shutdown by
causing the implementation to believe the events already happened.
It is an error to use SSL_set_shutdown to unset a bit that has already been set.
Doing so will trigger an assert in debug builds and otherwise be ignored.
Use SSL_CTX_set_quiet_shutdown instead."

Change logic to not notify on SSL_shutdown when connection is not clean.
2017-01-11 12:44:40 +01:00

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/*
* SSL/TLS transport layer over SOCK_STREAM sockets
*
* Copyright (C) 2012 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Acknowledgement:
* We'd like to specially thank the Stud project authors for a very clean
* and well documented code which helped us understand how the OpenSSL API
* ought to be used in non-blocking mode. This is one difficult part which
* is not easy to get from the OpenSSL doc, and reading the Stud code made
* it much more obvious than the examples in the OpenSSL package. Keep up
* the good works, guys !
*
* Stud is an extremely efficient and scalable SSL/TLS proxy which combines
* particularly well with haproxy. For more info about this project, visit :
* https://github.com/bumptech/stud
*
*/
#define _GNU_SOURCE
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <netdb.h>
#include <netinet/tcp.h>
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include <openssl/x509.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#if (defined SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB && !defined OPENSSL_NO_OCSP)
#include <openssl/ocsp.h>
#endif
#ifndef OPENSSL_NO_DH
#include <openssl/dh.h>
#endif
#include <import/lru.h>
#include <import/xxhash.h>
#include <common/buffer.h>
#include <common/compat.h>
#include <common/config.h>
#include <common/debug.h>
#include <common/errors.h>
#include <common/standard.h>
#include <common/ticks.h>
#include <common/time.h>
#include <common/cfgparse.h>
#include <common/base64.h>
#include <ebsttree.h>
#include <types/applet.h>
#include <types/cli.h>
#include <types/global.h>
#include <types/ssl_sock.h>
#include <types/stats.h>
#include <proto/acl.h>
#include <proto/arg.h>
#include <proto/channel.h>
#include <proto/connection.h>
#include <proto/cli.h>
#include <proto/fd.h>
#include <proto/freq_ctr.h>
#include <proto/frontend.h>
#include <proto/listener.h>
#include <proto/openssl-compat.h>
#include <proto/pattern.h>
#include <proto/proto_tcp.h>
#include <proto/server.h>
#include <proto/stream_interface.h>
#include <proto/log.h>
#include <proto/proxy.h>
#include <proto/shctx.h>
#include <proto/ssl_sock.h>
#include <proto/stream.h>
#include <proto/task.h>
/* Warning, these are bits, not integers! */
#define SSL_SOCK_ST_FL_VERIFY_DONE 0x00000001
#define SSL_SOCK_ST_FL_16K_WBFSIZE 0x00000002
#define SSL_SOCK_SEND_UNLIMITED 0x00000004
#define SSL_SOCK_RECV_HEARTBEAT 0x00000008
/* bits 0xFFFF0000 are reserved to store verify errors */
/* Verify errors macros */
#define SSL_SOCK_CA_ERROR_TO_ST(e) (((e > 63) ? 63 : e) << (16))
#define SSL_SOCK_CAEDEPTH_TO_ST(d) (((d > 15) ? 15 : d) << (6+16))
#define SSL_SOCK_CRTERROR_TO_ST(e) (((e > 63) ? 63 : e) << (4+6+16))
#define SSL_SOCK_ST_TO_CA_ERROR(s) ((s >> (16)) & 63)
#define SSL_SOCK_ST_TO_CAEDEPTH(s) ((s >> (6+16)) & 15)
#define SSL_SOCK_ST_TO_CRTERROR(s) ((s >> (4+6+16)) & 63)
/* Supported hash function for TLS tickets */
#ifdef OPENSSL_NO_SHA256
#define HASH_FUNCT EVP_sha1
#else
#define HASH_FUNCT EVP_sha256
#endif /* OPENSSL_NO_SHA256 */
/* server and bind verify method, it uses a global value as default */
enum {
SSL_SOCK_VERIFY_DEFAULT = 0,
SSL_SOCK_VERIFY_REQUIRED = 1,
SSL_SOCK_VERIFY_OPTIONAL = 2,
SSL_SOCK_VERIFY_NONE = 3,
};
int sslconns = 0;
int totalsslconns = 0;
static struct xprt_ops ssl_sock;
static struct {
char *crt_base; /* base directory path for certificates */
char *ca_base; /* base directory path for CAs and CRLs */
char *listen_default_ciphers;
char *connect_default_ciphers;
int listen_default_ssloptions;
int connect_default_ssloptions;
int private_cache; /* Force to use a private session cache even if nbproc > 1 */
unsigned int life_time; /* SSL session lifetime in seconds */
unsigned int max_record; /* SSL max record size */
unsigned int default_dh_param; /* SSL maximum DH parameter size */
int ctx_cache; /* max number of entries in the ssl_ctx cache. */
} global_ssl = {
#ifdef LISTEN_DEFAULT_CIPHERS
.listen_default_ciphers = LISTEN_DEFAULT_CIPHERS,
#endif
#ifdef CONNECT_DEFAULT_CIPHERS
.connect_default_ciphers = CONNECT_DEFAULT_CIPHERS,
#endif
.listen_default_ssloptions = BC_SSL_O_NONE,
.connect_default_ssloptions = SRV_SSL_O_NONE,
#ifdef DEFAULT_SSL_MAX_RECORD
.max_record = DEFAULT_SSL_MAX_RECORD,
#endif
.default_dh_param = SSL_DEFAULT_DH_PARAM,
.ctx_cache = DEFAULT_SSL_CTX_CACHE,
};
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
struct list tlskeys_reference = LIST_HEAD_INIT(tlskeys_reference);
#endif
#ifndef OPENSSL_NO_DH
static int ssl_dh_ptr_index = -1;
static DH *global_dh = NULL;
static DH *local_dh_1024 = NULL;
static DH *local_dh_2048 = NULL;
static DH *local_dh_4096 = NULL;
#endif /* OPENSSL_NO_DH */
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
/* X509V3 Extensions that will be added on generated certificates */
#define X509V3_EXT_SIZE 5
static char *x509v3_ext_names[X509V3_EXT_SIZE] = {
"basicConstraints",
"nsComment",
"subjectKeyIdentifier",
"authorityKeyIdentifier",
"keyUsage",
};
static char *x509v3_ext_values[X509V3_EXT_SIZE] = {
"CA:FALSE",
"\"OpenSSL Generated Certificate\"",
"hash",
"keyid,issuer:always",
"nonRepudiation,digitalSignature,keyEncipherment"
};
/* LRU cache to store generated certificate */
static struct lru64_head *ssl_ctx_lru_tree = NULL;
static unsigned int ssl_ctx_lru_seed = 0;
#endif // SSL_CTRL_SET_TLSEXT_HOSTNAME
#if OPENSSL_VERSION_NUMBER >= 0x1000200fL
/* The order here matters for picking a default context,
* keep the most common keytype at the bottom of the list
*/
const char *SSL_SOCK_KEYTYPE_NAMES[] = {
"dsa",
"ecdsa",
"rsa"
};
#define SSL_SOCK_NUM_KEYTYPES 3
#else
#define SSL_SOCK_NUM_KEYTYPES 1
#endif
#if (defined SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB && !defined OPENSSL_NO_OCSP)
/*
* struct alignment works here such that the key.key is the same as key_data
* Do not change the placement of key_data
*/
struct certificate_ocsp {
struct ebmb_node key;
unsigned char key_data[OCSP_MAX_CERTID_ASN1_LENGTH];
struct chunk response;
long expire;
};
struct ocsp_cbk_arg {
int is_single;
int single_kt;
union {
struct certificate_ocsp *s_ocsp;
/*
* m_ocsp will have multiple entries dependent on key type
* Entry 0 - DSA
* Entry 1 - ECDSA
* Entry 2 - RSA
*/
struct certificate_ocsp *m_ocsp[SSL_SOCK_NUM_KEYTYPES];
};
};
/*
* This function gives the detail of the SSL error. It is used only
* if the debug mode and the verbose mode are activated. It dump all
* the SSL error until the stack was empty.
*/
static forceinline void ssl_sock_dump_errors(struct connection *conn)
{
unsigned long ret;
if (unlikely(global.mode & MODE_DEBUG)) {
while(1) {
ret = ERR_get_error();
if (ret == 0)
return;
fprintf(stderr, "fd[%04x] OpenSSL error[0x%lx] %s: %s\n",
(unsigned short)conn->t.sock.fd, ret,
ERR_func_error_string(ret), ERR_reason_error_string(ret));
}
}
}
/*
* This function returns the number of seconds elapsed
* since the Epoch, 1970-01-01 00:00:00 +0000 (UTC) and the
* date presented un ASN1_GENERALIZEDTIME.
*
* In parsing error case, it returns -1.
*/
static long asn1_generalizedtime_to_epoch(ASN1_GENERALIZEDTIME *d)
{
long epoch;
char *p, *end;
const unsigned short month_offset[12] = {
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
};
int year, month;
if (!d || (d->type != V_ASN1_GENERALIZEDTIME)) return -1;
p = (char *)d->data;
end = p + d->length;
if (end - p < 4) return -1;
year = 1000 * (p[0] - '0') + 100 * (p[1] - '0') + 10 * (p[2] - '0') + p[3] - '0';
p += 4;
if (end - p < 2) return -1;
month = 10 * (p[0] - '0') + p[1] - '0';
if (month < 1 || month > 12) return -1;
/* Compute the number of seconds since 1 jan 1970 and the beginning of current month
We consider leap years and the current month (<marsh or not) */
epoch = ( ((year - 1970) * 365)
+ ((year - (month < 3)) / 4 - (year - (month < 3)) / 100 + (year - (month < 3)) / 400)
- ((1970 - 1) / 4 - (1970 - 1) / 100 + (1970 - 1) / 400)
+ month_offset[month-1]
) * 24 * 60 * 60;
p += 2;
if (end - p < 2) return -1;
/* Add the number of seconds of completed days of current month */
epoch += (10 * (p[0] - '0') + p[1] - '0' - 1) * 24 * 60 * 60;
p += 2;
if (end - p < 2) return -1;
/* Add the completed hours of the current day */
epoch += (10 * (p[0] - '0') + p[1] - '0') * 60 * 60;
p += 2;
if (end - p < 2) return -1;
/* Add the completed minutes of the current hour */
epoch += (10 * (p[0] - '0') + p[1] - '0') * 60;
p += 2;
if (p == end) return -1;
/* Test if there is available seconds */
if (p[0] < '0' || p[0] > '9')
goto nosec;
if (end - p < 2) return -1;
/* Add the seconds of the current minute */
epoch += 10 * (p[0] - '0') + p[1] - '0';
p += 2;
if (p == end) return -1;
/* Ignore seconds float part if present */
if (p[0] == '.') {
do {
if (++p == end) return -1;
} while (p[0] >= '0' && p[0] <= '9');
}
nosec:
if (p[0] == 'Z') {
if (end - p != 1) return -1;
return epoch;
}
else if (p[0] == '+') {
if (end - p != 5) return -1;
/* Apply timezone offset */
return epoch - ((10 * (p[1] - '0') + p[2] - '0') * 60 + (10 * (p[3] - '0') + p[4] - '0')) * 60;
}
else if (p[0] == '-') {
if (end - p != 5) return -1;
/* Apply timezone offset */
return epoch + ((10 * (p[1] - '0') + p[2] - '0') * 60 + (10 * (p[3] - '0') + p[4] - '0')) * 60;
}
return -1;
}
static struct eb_root cert_ocsp_tree = EB_ROOT_UNIQUE;
/* This function starts to check if the OCSP response (in DER format) contained
* in chunk 'ocsp_response' is valid (else exits on error).
* If 'cid' is not NULL, it will be compared to the OCSP certificate ID
* contained in the OCSP Response and exits on error if no match.
* If it's a valid OCSP Response:
* If 'ocsp' is not NULL, the chunk is copied in the OCSP response's container
* pointed by 'ocsp'.
* If 'ocsp' is NULL, the function looks up into the OCSP response's
* containers tree (using as index the ASN1 form of the OCSP Certificate ID extracted
* from the response) and exits on error if not found. Finally, If an OCSP response is
* already present in the container, it will be overwritten.
*
* Note: OCSP response containing more than one OCSP Single response is not
* considered valid.
*
* Returns 0 on success, 1 in error case.
*/
static int ssl_sock_load_ocsp_response(struct chunk *ocsp_response, struct certificate_ocsp *ocsp, OCSP_CERTID *cid, char **err)
{
OCSP_RESPONSE *resp;
OCSP_BASICRESP *bs = NULL;
OCSP_SINGLERESP *sr;
OCSP_CERTID *id;
unsigned char *p = (unsigned char *)ocsp_response->str;
int rc , count_sr;
ASN1_GENERALIZEDTIME *revtime, *thisupd, *nextupd = NULL;
int reason;
int ret = 1;
resp = d2i_OCSP_RESPONSE(NULL, (const unsigned char **)&p, ocsp_response->len);
if (!resp) {
memprintf(err, "Unable to parse OCSP response");
goto out;
}
rc = OCSP_response_status(resp);
if (rc != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
memprintf(err, "OCSP response status not successful");
goto out;
}
bs = OCSP_response_get1_basic(resp);
if (!bs) {
memprintf(err, "Failed to get basic response from OCSP Response");
goto out;
}
count_sr = OCSP_resp_count(bs);
if (count_sr > 1) {
memprintf(err, "OCSP response ignored because contains multiple single responses (%d)", count_sr);
goto out;
}
sr = OCSP_resp_get0(bs, 0);
if (!sr) {
memprintf(err, "Failed to get OCSP single response");
goto out;
}
id = (OCSP_CERTID*)OCSP_SINGLERESP_get0_id(sr);
rc = OCSP_single_get0_status(sr, &reason, &revtime, &thisupd, &nextupd);
if (rc != V_OCSP_CERTSTATUS_GOOD) {
memprintf(err, "OCSP single response: certificate status not good");
goto out;
}
if (!nextupd) {
memprintf(err, "OCSP single response: missing nextupdate");
goto out;
}
rc = OCSP_check_validity(thisupd, nextupd, OCSP_MAX_RESPONSE_TIME_SKEW, -1);
if (!rc) {
memprintf(err, "OCSP single response: no longer valid.");
goto out;
}
if (cid) {
if (OCSP_id_cmp(id, cid)) {
memprintf(err, "OCSP single response: Certificate ID does not match certificate and issuer");
goto out;
}
}
if (!ocsp) {
unsigned char key[OCSP_MAX_CERTID_ASN1_LENGTH];
unsigned char *p;
rc = i2d_OCSP_CERTID(id, NULL);
if (!rc) {
memprintf(err, "OCSP single response: Unable to encode Certificate ID");
goto out;
}
if (rc > OCSP_MAX_CERTID_ASN1_LENGTH) {
memprintf(err, "OCSP single response: Certificate ID too long");
goto out;
}
p = key;
memset(key, 0, OCSP_MAX_CERTID_ASN1_LENGTH);
i2d_OCSP_CERTID(id, &p);
ocsp = (struct certificate_ocsp *)ebmb_lookup(&cert_ocsp_tree, key, OCSP_MAX_CERTID_ASN1_LENGTH);
if (!ocsp) {
memprintf(err, "OCSP single response: Certificate ID does not match any certificate or issuer");
goto out;
}
}
/* According to comments on "chunk_dup", the
previous chunk buffer will be freed */
if (!chunk_dup(&ocsp->response, ocsp_response)) {
memprintf(err, "OCSP response: Memory allocation error");
goto out;
}
ocsp->expire = asn1_generalizedtime_to_epoch(nextupd) - OCSP_MAX_RESPONSE_TIME_SKEW;
ret = 0;
out:
if (bs)
OCSP_BASICRESP_free(bs);
if (resp)
OCSP_RESPONSE_free(resp);
return ret;
}
/*
* External function use to update the OCSP response in the OCSP response's
* containers tree. The chunk 'ocsp_response' must contain the OCSP response
* to update in DER format.
*
* Returns 0 on success, 1 in error case.
*/
int ssl_sock_update_ocsp_response(struct chunk *ocsp_response, char **err)
{
return ssl_sock_load_ocsp_response(ocsp_response, NULL, NULL, err);
}
/*
* This function load the OCSP Resonse in DER format contained in file at
* path 'ocsp_path' and call 'ssl_sock_load_ocsp_response'
*
* Returns 0 on success, 1 in error case.
*/
static int ssl_sock_load_ocsp_response_from_file(const char *ocsp_path, struct certificate_ocsp *ocsp, OCSP_CERTID *cid, char **err)
{
int fd = -1;
int r = 0;
int ret = 1;
fd = open(ocsp_path, O_RDONLY);
if (fd == -1) {
memprintf(err, "Error opening OCSP response file");
goto end;
}
trash.len = 0;
while (trash.len < trash.size) {
r = read(fd, trash.str + trash.len, trash.size - trash.len);
if (r < 0) {
if (errno == EINTR)
continue;
memprintf(err, "Error reading OCSP response from file");
goto end;
}
else if (r == 0) {
break;
}
trash.len += r;
}
close(fd);
fd = -1;
ret = ssl_sock_load_ocsp_response(&trash, ocsp, cid, err);
end:
if (fd != -1)
close(fd);
return ret;
}
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
static int ssl_tlsext_ticket_key_cb(SSL *s, unsigned char key_name[16], unsigned char *iv, EVP_CIPHER_CTX *ectx, HMAC_CTX *hctx, int enc)
{
struct tls_sess_key *keys;
struct connection *conn;
int head;
int i;
conn = SSL_get_app_data(s);
keys = objt_listener(conn->target)->bind_conf->keys_ref->tlskeys;
head = objt_listener(conn->target)->bind_conf->keys_ref->tls_ticket_enc_index;
if (enc) {
memcpy(key_name, keys[head].name, 16);
if(!RAND_pseudo_bytes(iv, EVP_MAX_IV_LENGTH))
return -1;
if(!EVP_EncryptInit_ex(ectx, EVP_aes_128_cbc(), NULL, keys[head].aes_key, iv))
return -1;
HMAC_Init_ex(hctx, keys[head].hmac_key, 16, HASH_FUNCT(), NULL);
return 1;
} else {
for (i = 0; i < TLS_TICKETS_NO; i++) {
if (!memcmp(key_name, keys[(head + i) % TLS_TICKETS_NO].name, 16))
goto found;
}
return 0;
found:
HMAC_Init_ex(hctx, keys[(head + i) % TLS_TICKETS_NO].hmac_key, 16, HASH_FUNCT(), NULL);
if(!EVP_DecryptInit_ex(ectx, EVP_aes_128_cbc(), NULL, keys[(head + i) % TLS_TICKETS_NO].aes_key, iv))
return -1;
/* 2 for key renewal, 1 if current key is still valid */
return i ? 2 : 1;
}
}
struct tls_keys_ref *tlskeys_ref_lookup(const char *filename)
{
struct tls_keys_ref *ref;
list_for_each_entry(ref, &tlskeys_reference, list)
if (ref->filename && strcmp(filename, ref->filename) == 0)
return ref;
return NULL;
}
struct tls_keys_ref *tlskeys_ref_lookupid(int unique_id)
{
struct tls_keys_ref *ref;
list_for_each_entry(ref, &tlskeys_reference, list)
if (ref->unique_id == unique_id)
return ref;
return NULL;
}
int ssl_sock_update_tlskey(char *filename, struct chunk *tlskey, char **err) {
struct tls_keys_ref *ref = tlskeys_ref_lookup(filename);
if(!ref) {
memprintf(err, "Unable to locate the referenced filename: %s", filename);
return 1;
}
memcpy((char *) (ref->tlskeys + ((ref->tls_ticket_enc_index + 2) % TLS_TICKETS_NO)), tlskey->str, tlskey->len);
ref->tls_ticket_enc_index = (ref->tls_ticket_enc_index + 1) % TLS_TICKETS_NO;
return 0;
}
/* This function finalize the configuration parsing. Its set all the
* automatic ids. It's called just after the basic checks. It returns
* 0 on success otherwise ERR_*.
*/
static int tlskeys_finalize_config(void)
{
int i = 0;
struct tls_keys_ref *ref, *ref2, *ref3;
struct list tkr = LIST_HEAD_INIT(tkr);
list_for_each_entry(ref, &tlskeys_reference, list) {
if (ref->unique_id == -1) {
/* Look for the first free id. */
while (1) {
list_for_each_entry(ref2, &tlskeys_reference, list) {
if (ref2->unique_id == i) {
i++;
break;
}
}
if (&ref2->list == &tlskeys_reference)
break;
}
/* Uses the unique id and increment it for the next entry. */
ref->unique_id = i;
i++;
}
}
/* This sort the reference list by id. */
list_for_each_entry_safe(ref, ref2, &tlskeys_reference, list) {
LIST_DEL(&ref->list);
list_for_each_entry(ref3, &tkr, list) {
if (ref->unique_id < ref3->unique_id) {
LIST_ADDQ(&ref3->list, &ref->list);
break;
}
}
if (&ref3->list == &tkr)
LIST_ADDQ(&tkr, &ref->list);
}
/* swap root */
LIST_ADD(&tkr, &tlskeys_reference);
LIST_DEL(&tkr);
return 0;
}
#endif /* SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB */
int ssl_sock_get_ocsp_arg_kt_index(int evp_keytype)
{
switch (evp_keytype) {
case EVP_PKEY_RSA:
return 2;
case EVP_PKEY_DSA:
return 0;
case EVP_PKEY_EC:
return 1;
}
return -1;
}
/*
* Callback used to set OCSP status extension content in server hello.
*/
int ssl_sock_ocsp_stapling_cbk(SSL *ssl, void *arg)
{
struct certificate_ocsp *ocsp;
struct ocsp_cbk_arg *ocsp_arg;
char *ssl_buf;
EVP_PKEY *ssl_pkey;
int key_type;
int index;
ocsp_arg = arg;
ssl_pkey = SSL_get_privatekey(ssl);
if (!ssl_pkey)
return SSL_TLSEXT_ERR_NOACK;
key_type = EVP_PKEY_base_id(ssl_pkey);
if (ocsp_arg->is_single && ocsp_arg->single_kt == key_type)
ocsp = ocsp_arg->s_ocsp;
else {
/* For multiple certs per context, we have to find the correct OCSP response based on
* the certificate type
*/
index = ssl_sock_get_ocsp_arg_kt_index(key_type);
if (index < 0)
return SSL_TLSEXT_ERR_NOACK;
ocsp = ocsp_arg->m_ocsp[index];
}
if (!ocsp ||
!ocsp->response.str ||
!ocsp->response.len ||
(ocsp->expire < now.tv_sec))
return SSL_TLSEXT_ERR_NOACK;
ssl_buf = OPENSSL_malloc(ocsp->response.len);
if (!ssl_buf)
return SSL_TLSEXT_ERR_NOACK;
memcpy(ssl_buf, ocsp->response.str, ocsp->response.len);
SSL_set_tlsext_status_ocsp_resp(ssl, ssl_buf, ocsp->response.len);
return SSL_TLSEXT_ERR_OK;
}
/*
* This function enables the handling of OCSP status extension on 'ctx' if a
* file name 'cert_path' suffixed using ".ocsp" is present.
* To enable OCSP status extension, the issuer's certificate is mandatory.
* It should be present in the certificate's extra chain builded from file
* 'cert_path'. If not found, the issuer certificate is loaded from a file
* named 'cert_path' suffixed using '.issuer'.
*
* In addition, ".ocsp" file content is loaded as a DER format of an OCSP
* response. If file is empty or content is not a valid OCSP response,
* OCSP status extension is enabled but OCSP response is ignored (a warning
* is displayed).
*
* Returns 1 if no ".ocsp" file found, 0 if OCSP status extension is
* succesfully enabled, or -1 in other error case.
*/
static int ssl_sock_load_ocsp(SSL_CTX *ctx, const char *cert_path)
{
BIO *in = NULL;
X509 *x, *xi = NULL, *issuer = NULL;
STACK_OF(X509) *chain = NULL;
OCSP_CERTID *cid = NULL;
SSL *ssl;
char ocsp_path[MAXPATHLEN+1];
int i, ret = -1;
struct stat st;
struct certificate_ocsp *ocsp = NULL, *iocsp;
char *warn = NULL;
unsigned char *p;
pem_password_cb *passwd_cb;
void *passwd_cb_userdata;
void (*callback) (void);
snprintf(ocsp_path, MAXPATHLEN+1, "%s.ocsp", cert_path);
if (stat(ocsp_path, &st))
return 1;
ssl = SSL_new(ctx);
if (!ssl)
goto out;
x = SSL_get_certificate(ssl);
if (!x)
goto out;
/* Try to lookup for issuer in certificate extra chain */
#ifdef SSL_CTRL_GET_EXTRA_CHAIN_CERTS
SSL_CTX_get_extra_chain_certs(ctx, &chain);
#else
chain = ctx->extra_certs;
#endif
for (i = 0; i < sk_X509_num(chain); i++) {
issuer = sk_X509_value(chain, i);
if (X509_check_issued(issuer, x) == X509_V_OK)
break;
else
issuer = NULL;
}
/* If not found try to load issuer from a suffixed file */
if (!issuer) {
char issuer_path[MAXPATHLEN+1];
in = BIO_new(BIO_s_file());
if (!in)
goto out;
snprintf(issuer_path, MAXPATHLEN+1, "%s.issuer", cert_path);
if (BIO_read_filename(in, issuer_path) <= 0)
goto out;
passwd_cb = SSL_CTX_get_default_passwd_cb(ctx);
passwd_cb_userdata = SSL_CTX_get_default_passwd_cb_userdata(ctx);
xi = PEM_read_bio_X509_AUX(in, NULL, passwd_cb, passwd_cb_userdata);
if (!xi)
goto out;
if (X509_check_issued(xi, x) != X509_V_OK)
goto out;
issuer = xi;
}
cid = OCSP_cert_to_id(0, x, issuer);
if (!cid)
goto out;
i = i2d_OCSP_CERTID(cid, NULL);
if (!i || (i > OCSP_MAX_CERTID_ASN1_LENGTH))
goto out;
ocsp = calloc(1, sizeof(*ocsp));
if (!ocsp)
goto out;
p = ocsp->key_data;
i2d_OCSP_CERTID(cid, &p);
iocsp = (struct certificate_ocsp *)ebmb_insert(&cert_ocsp_tree, &ocsp->key, OCSP_MAX_CERTID_ASN1_LENGTH);
if (iocsp == ocsp)
ocsp = NULL;
#ifndef SSL_CTX_get_tlsext_status_cb
# define SSL_CTX_get_tlsext_status_cb(ctx, cb) \
*cb = (void (*) (void))ctx->tlsext_status_cb;
#endif
SSL_CTX_get_tlsext_status_cb(ctx, &callback);
if (!callback) {
struct ocsp_cbk_arg *cb_arg = calloc(1, sizeof(*cb_arg));
EVP_PKEY *pkey;
cb_arg->is_single = 1;
cb_arg->s_ocsp = iocsp;
pkey = X509_get_pubkey(x);
cb_arg->single_kt = EVP_PKEY_base_id(pkey);
EVP_PKEY_free(pkey);
SSL_CTX_set_tlsext_status_cb(ctx, ssl_sock_ocsp_stapling_cbk);
SSL_CTX_set_tlsext_status_arg(ctx, cb_arg);
} else {
/*
* If the ctx has a status CB, then we have previously set an OCSP staple for this ctx
* Update that cb_arg with the new cert's staple
*/
struct ocsp_cbk_arg *cb_arg;
struct certificate_ocsp *tmp_ocsp;
int index;
int key_type;
EVP_PKEY *pkey;
#ifdef SSL_CTX_get_tlsext_status_arg
SSL_CTX_ctrl(ctx, SSL_CTRL_GET_TLSEXT_STATUS_REQ_CB_ARG, 0, &cb_arg);
#else
cb_arg = ctx->tlsext_status_arg;
#endif
/*
* The following few lines will convert cb_arg from a single ocsp to multi ocsp
* the order of operations below matter, take care when changing it
*/
tmp_ocsp = cb_arg->s_ocsp;
index = ssl_sock_get_ocsp_arg_kt_index(cb_arg->single_kt);
cb_arg->s_ocsp = NULL;
cb_arg->m_ocsp[index] = tmp_ocsp;
cb_arg->is_single = 0;
cb_arg->single_kt = 0;
pkey = X509_get_pubkey(x);
key_type = EVP_PKEY_base_id(pkey);
EVP_PKEY_free(pkey);
index = ssl_sock_get_ocsp_arg_kt_index(key_type);
if (index >= 0 && !cb_arg->m_ocsp[index])
cb_arg->m_ocsp[index] = iocsp;
}
ret = 0;
warn = NULL;
if (ssl_sock_load_ocsp_response_from_file(ocsp_path, iocsp, cid, &warn)) {
memprintf(&warn, "Loading '%s': %s. Content will be ignored", ocsp_path, warn ? warn : "failure");
Warning("%s.\n", warn);
}
out:
if (ssl)
SSL_free(ssl);
if (in)
BIO_free(in);
if (xi)
X509_free(xi);
if (cid)
OCSP_CERTID_free(cid);
if (ocsp)
free(ocsp);
if (warn)
free(warn);
return ret;
}
#endif
#if (OPENSSL_VERSION_NUMBER >= 0x1000200fL && !defined OPENSSL_NO_TLSEXT && !defined OPENSSL_IS_BORINGSSL && !defined LIBRESSL_VERSION_NUMBER)
#define CT_EXTENSION_TYPE 18
static int sctl_ex_index = -1;
/*
* Try to parse Signed Certificate Timestamp List structure. This function
* makes only basic test if the data seems like SCTL. No signature validation
* is performed.
*/
static int ssl_sock_parse_sctl(struct chunk *sctl)
{
int ret = 1;
int len, pos, sct_len;
unsigned char *data;
if (sctl->len < 2)
goto out;
data = (unsigned char *)sctl->str;
len = (data[0] << 8) | data[1];
if (len + 2 != sctl->len)
goto out;
data = data + 2;
pos = 0;
while (pos < len) {
if (len - pos < 2)
goto out;
sct_len = (data[pos] << 8) | data[pos + 1];
if (pos + sct_len + 2 > len)
goto out;
pos += sct_len + 2;
}
ret = 0;
out:
return ret;
}
static int ssl_sock_load_sctl_from_file(const char *sctl_path, struct chunk **sctl)
{
int fd = -1;
int r = 0;
int ret = 1;
*sctl = NULL;
fd = open(sctl_path, O_RDONLY);
if (fd == -1)
goto end;
trash.len = 0;
while (trash.len < trash.size) {
r = read(fd, trash.str + trash.len, trash.size - trash.len);
if (r < 0) {
if (errno == EINTR)
continue;
goto end;
}
else if (r == 0) {
break;
}
trash.len += r;
}
ret = ssl_sock_parse_sctl(&trash);
if (ret)
goto end;
*sctl = calloc(1, sizeof(**sctl));
if (!chunk_dup(*sctl, &trash)) {
free(*sctl);
*sctl = NULL;
goto end;
}
end:
if (fd != -1)
close(fd);
return ret;
}
int ssl_sock_sctl_add_cbk(SSL *ssl, unsigned ext_type, const unsigned char **out, size_t *outlen, int *al, void *add_arg)
{
struct chunk *sctl = add_arg;
*out = (unsigned char *)sctl->str;
*outlen = sctl->len;
return 1;
}
int ssl_sock_sctl_parse_cbk(SSL *s, unsigned int ext_type, const unsigned char *in, size_t inlen, int *al, void *parse_arg)
{
return 1;
}
static int ssl_sock_load_sctl(SSL_CTX *ctx, const char *cert_path)
{
char sctl_path[MAXPATHLEN+1];
int ret = -1;
struct stat st;
struct chunk *sctl = NULL;
snprintf(sctl_path, MAXPATHLEN+1, "%s.sctl", cert_path);
if (stat(sctl_path, &st))
return 1;
if (ssl_sock_load_sctl_from_file(sctl_path, &sctl))
goto out;
if (!SSL_CTX_add_server_custom_ext(ctx, CT_EXTENSION_TYPE, ssl_sock_sctl_add_cbk, NULL, sctl, ssl_sock_sctl_parse_cbk, NULL)) {
free(sctl);
goto out;
}
SSL_CTX_set_ex_data(ctx, sctl_ex_index, sctl);
ret = 0;
out:
return ret;
}
#endif
void ssl_sock_infocbk(const SSL *ssl, int where, int ret)
{
struct connection *conn = SSL_get_app_data(ssl);
BIO *write_bio;
(void)ret; /* shut gcc stupid warning */
if (where & SSL_CB_HANDSHAKE_START) {
/* Disable renegotiation (CVE-2009-3555) */
if (conn->flags & CO_FL_CONNECTED) {
conn->flags |= CO_FL_ERROR;
conn->err_code = CO_ER_SSL_RENEG;
}
}
if ((where & SSL_CB_ACCEPT_LOOP) == SSL_CB_ACCEPT_LOOP) {
if (!(conn->xprt_st & SSL_SOCK_ST_FL_16K_WBFSIZE)) {
/* Long certificate chains optimz
If write and read bios are differents, we
consider that the buffering was activated,
so we rise the output buffer size from 4k
to 16k */
write_bio = SSL_get_wbio(ssl);
if (write_bio != SSL_get_rbio(ssl)) {
BIO_set_write_buffer_size(write_bio, 16384);
conn->xprt_st |= SSL_SOCK_ST_FL_16K_WBFSIZE;
}
}
}
}
/* Callback is called for each certificate of the chain during a verify
ok is set to 1 if preverify detect no error on current certificate.
Returns 0 to break the handshake, 1 otherwise. */
int ssl_sock_bind_verifycbk(int ok, X509_STORE_CTX *x_store)
{
SSL *ssl;
struct connection *conn;
int err, depth;
ssl = X509_STORE_CTX_get_ex_data(x_store, SSL_get_ex_data_X509_STORE_CTX_idx());
conn = SSL_get_app_data(ssl);
conn->xprt_st |= SSL_SOCK_ST_FL_VERIFY_DONE;
if (ok) /* no errors */
return ok;
depth = X509_STORE_CTX_get_error_depth(x_store);
err = X509_STORE_CTX_get_error(x_store);
/* check if CA error needs to be ignored */
if (depth > 0) {
if (!SSL_SOCK_ST_TO_CA_ERROR(conn->xprt_st)) {
conn->xprt_st |= SSL_SOCK_CA_ERROR_TO_ST(err);
conn->xprt_st |= SSL_SOCK_CAEDEPTH_TO_ST(depth);
}
if (objt_listener(conn->target)->bind_conf->ca_ignerr & (1ULL << err)) {
ssl_sock_dump_errors(conn);
ERR_clear_error();
return 1;
}
conn->err_code = CO_ER_SSL_CA_FAIL;
return 0;
}
if (!SSL_SOCK_ST_TO_CRTERROR(conn->xprt_st))
conn->xprt_st |= SSL_SOCK_CRTERROR_TO_ST(err);
/* check if certificate error needs to be ignored */
if (objt_listener(conn->target)->bind_conf->crt_ignerr & (1ULL << err)) {
ssl_sock_dump_errors(conn);
ERR_clear_error();
return 1;
}
conn->err_code = CO_ER_SSL_CRT_FAIL;
return 0;
}
/* Callback is called for ssl protocol analyse */
void ssl_sock_msgcbk(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
{
#ifdef TLS1_RT_HEARTBEAT
/* test heartbeat received (write_p is set to 0
for a received record) */
if ((content_type == TLS1_RT_HEARTBEAT) && (write_p == 0)) {
struct connection *conn = SSL_get_app_data(ssl);
const unsigned char *p = buf;
unsigned int payload;
conn->xprt_st |= SSL_SOCK_RECV_HEARTBEAT;
/* Check if this is a CVE-2014-0160 exploitation attempt. */
if (*p != TLS1_HB_REQUEST)
return;
if (len < 1 + 2 + 16) /* 1 type + 2 size + 0 payload + 16 padding */
goto kill_it;
payload = (p[1] * 256) + p[2];
if (3 + payload + 16 <= len)
return; /* OK no problem */
kill_it:
/* We have a clear heartbleed attack (CVE-2014-0160), the
* advertised payload is larger than the advertised packet
* length, so we have garbage in the buffer between the
* payload and the end of the buffer (p+len). We can't know
* if the SSL stack is patched, and we don't know if we can
* safely wipe out the area between p+3+len and payload.
* So instead, we prevent the response from being sent by
* setting the max_send_fragment to 0 and we report an SSL
* error, which will kill this connection. It will be reported
* above as SSL_ERROR_SSL while an other handshake failure with
* a heartbeat message will be reported as SSL_ERROR_SYSCALL.
*/
ssl->max_send_fragment = 0;
SSLerr(SSL_F_TLS1_HEARTBEAT, SSL_R_SSL_HANDSHAKE_FAILURE);
return;
}
#endif
}
#ifdef OPENSSL_NPN_NEGOTIATED
/* This callback is used so that the server advertises the list of
* negociable protocols for NPN.
*/
static int ssl_sock_advertise_npn_protos(SSL *s, const unsigned char **data,
unsigned int *len, void *arg)
{
struct bind_conf *conf = arg;
*data = (const unsigned char *)conf->npn_str;
*len = conf->npn_len;
return SSL_TLSEXT_ERR_OK;
}
#endif
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
/* This callback is used so that the server advertises the list of
* negociable protocols for ALPN.
*/
static int ssl_sock_advertise_alpn_protos(SSL *s, const unsigned char **out,
unsigned char *outlen,
const unsigned char *server,
unsigned int server_len, void *arg)
{
struct bind_conf *conf = arg;
if (SSL_select_next_proto((unsigned char**) out, outlen, (const unsigned char *)conf->alpn_str,
conf->alpn_len, server, server_len) != OPENSSL_NPN_NEGOTIATED) {
return SSL_TLSEXT_ERR_NOACK;
}
return SSL_TLSEXT_ERR_OK;
}
#endif
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
static DH *ssl_get_tmp_dh(SSL *ssl, int export, int keylen);
/* Create a X509 certificate with the specified servername and serial. This
* function returns a SSL_CTX object or NULL if an error occurs. */
static SSL_CTX *
ssl_sock_do_create_cert(const char *servername, struct bind_conf *bind_conf, SSL *ssl)
{
static unsigned int serial = 0;
X509 *cacert = bind_conf->ca_sign_cert;
EVP_PKEY *capkey = bind_conf->ca_sign_pkey;
SSL_CTX *ssl_ctx = NULL;
X509 *newcrt = NULL;
EVP_PKEY *pkey = NULL;
X509_NAME *name;
const EVP_MD *digest;
X509V3_CTX ctx;
unsigned int i;
int key_type;
/* Get the private key of the defautl certificate and use it */
if (!(pkey = SSL_get_privatekey(ssl)))
goto mkcert_error;
/* Create the certificate */
if (!(newcrt = X509_new()))
goto mkcert_error;
/* Set version number for the certificate (X509v3) and the serial
* number */
if (X509_set_version(newcrt, 2L) != 1)
goto mkcert_error;
if (!serial)
serial = now_ms;
ASN1_INTEGER_set(X509_get_serialNumber(newcrt), serial++);
/* Set duration for the certificate */
if (!X509_gmtime_adj(X509_get_notBefore(newcrt), (long)-60*60*24) ||
!X509_gmtime_adj(X509_get_notAfter(newcrt),(long)60*60*24*365))
goto mkcert_error;
/* set public key in the certificate */
if (X509_set_pubkey(newcrt, pkey) != 1)
goto mkcert_error;
/* Set issuer name from the CA */
if (!(name = X509_get_subject_name(cacert)))
goto mkcert_error;
if (X509_set_issuer_name(newcrt, name) != 1)
goto mkcert_error;
/* Set the subject name using the same, but the CN */
name = X509_NAME_dup(name);
if (X509_NAME_add_entry_by_txt(name, "CN", MBSTRING_ASC,
(const unsigned char *)servername,
-1, -1, 0) != 1) {
X509_NAME_free(name);
goto mkcert_error;
}
if (X509_set_subject_name(newcrt, name) != 1) {
X509_NAME_free(name);
goto mkcert_error;
}
X509_NAME_free(name);
/* Add x509v3 extensions as specified */
X509V3_set_ctx(&ctx, cacert, newcrt, NULL, NULL, 0);
for (i = 0; i < X509V3_EXT_SIZE; i++) {
X509_EXTENSION *ext;
if (!(ext = X509V3_EXT_conf(NULL, &ctx, x509v3_ext_names[i], x509v3_ext_values[i])))
goto mkcert_error;
if (!X509_add_ext(newcrt, ext, -1)) {
X509_EXTENSION_free(ext);
goto mkcert_error;
}
X509_EXTENSION_free(ext);
}
/* Sign the certificate with the CA private key */
key_type = EVP_PKEY_base_id(capkey);
if (key_type == EVP_PKEY_DSA)
digest = EVP_sha1();
else if (key_type == EVP_PKEY_RSA)
digest = EVP_sha256();
else if (key_type == EVP_PKEY_EC)
digest = EVP_sha256();
else {
#if (OPENSSL_VERSION_NUMBER >= 0x1000000fL)
int nid;
if (EVP_PKEY_get_default_digest_nid(capkey, &nid) <= 0)
goto mkcert_error;
if (!(digest = EVP_get_digestbynid(nid)))
goto mkcert_error;
#else
goto mkcert_error;
#endif
}
if (!(X509_sign(newcrt, capkey, digest)))
goto mkcert_error;
/* Create and set the new SSL_CTX */
if (!(ssl_ctx = SSL_CTX_new(SSLv23_server_method())))
goto mkcert_error;
if (!SSL_CTX_use_PrivateKey(ssl_ctx, pkey))
goto mkcert_error;
if (!SSL_CTX_use_certificate(ssl_ctx, newcrt))
goto mkcert_error;
if (!SSL_CTX_check_private_key(ssl_ctx))
goto mkcert_error;
if (newcrt) X509_free(newcrt);
SSL_CTX_set_tmp_dh_callback(ssl_ctx, ssl_get_tmp_dh);
#if defined(SSL_CTX_set_tmp_ecdh) && !defined(OPENSSL_NO_ECDH)
{
const char *ecdhe = (bind_conf->ecdhe ? bind_conf->ecdhe : ECDHE_DEFAULT_CURVE);
EC_KEY *ecc;
int nid;
if ((nid = OBJ_sn2nid(ecdhe)) == NID_undef)
goto end;
if (!(ecc = EC_KEY_new_by_curve_name(nid)))
goto end;
SSL_CTX_set_tmp_ecdh(ssl_ctx, ecc);
EC_KEY_free(ecc);
}
#endif
end:
return ssl_ctx;
mkcert_error:
if (ssl_ctx) SSL_CTX_free(ssl_ctx);
if (newcrt) X509_free(newcrt);
return NULL;
}
SSL_CTX *
ssl_sock_create_cert(struct connection *conn, const char *servername, unsigned int key)
{
struct bind_conf *bind_conf = objt_listener(conn->target)->bind_conf;
return ssl_sock_do_create_cert(servername, bind_conf, conn->xprt_ctx);
}
/* Do a lookup for a certificate in the LRU cache used to store generated
* certificates. */
SSL_CTX *
ssl_sock_get_generated_cert(unsigned int key, struct bind_conf *bind_conf)
{
struct lru64 *lru = NULL;
if (ssl_ctx_lru_tree) {
lru = lru64_lookup(key, ssl_ctx_lru_tree, bind_conf->ca_sign_cert, 0);
if (lru && lru->domain)
return (SSL_CTX *)lru->data;
}
return NULL;
}
/* Set a certificate int the LRU cache used to store generated
* certificate. Return 0 on success, otherwise -1 */
int
ssl_sock_set_generated_cert(SSL_CTX *ssl_ctx, unsigned int key, struct bind_conf *bind_conf)
{
struct lru64 *lru = NULL;
if (ssl_ctx_lru_tree) {
lru = lru64_get(key, ssl_ctx_lru_tree, bind_conf->ca_sign_cert, 0);
if (!lru)
return -1;
if (lru->domain && lru->data)
lru->free((SSL_CTX *)lru->data);
lru64_commit(lru, ssl_ctx, bind_conf->ca_sign_cert, 0, (void (*)(void *))SSL_CTX_free);
return 0;
}
return -1;
}
/* Compute the key of the certificate. */
unsigned int
ssl_sock_generated_cert_key(const void *data, size_t len)
{
return XXH32(data, len, ssl_ctx_lru_seed);
}
/* Generate a cert and immediately assign it to the SSL session so that the cert's
* refcount is maintained regardless of the cert's presence in the LRU cache.
*/
static SSL_CTX *
ssl_sock_generate_certificate(const char *servername, struct bind_conf *bind_conf, SSL *ssl)
{
X509 *cacert = bind_conf->ca_sign_cert;
SSL_CTX *ssl_ctx = NULL;
struct lru64 *lru = NULL;
unsigned int key;
key = ssl_sock_generated_cert_key(servername, strlen(servername));
if (ssl_ctx_lru_tree) {
lru = lru64_get(key, ssl_ctx_lru_tree, cacert, 0);
if (lru && lru->domain)
ssl_ctx = (SSL_CTX *)lru->data;
if (!ssl_ctx && lru) {
ssl_ctx = ssl_sock_do_create_cert(servername, bind_conf, ssl);
lru64_commit(lru, ssl_ctx, cacert, 0, (void (*)(void *))SSL_CTX_free);
}
SSL_set_SSL_CTX(ssl, ssl_ctx);
}
else {
ssl_ctx = ssl_sock_do_create_cert(servername, bind_conf, ssl);
SSL_set_SSL_CTX(ssl, ssl_ctx);
/* No LRU cache, this CTX will be released as soon as the session dies */
SSL_CTX_free(ssl_ctx);
}
return ssl_ctx;
}
/* Sets the SSL ctx of <ssl> to match the advertised server name. Returns a
* warning when no match is found, which implies the default (first) cert
* will keep being used.
*/
static int ssl_sock_switchctx_cbk(SSL *ssl, int *al, struct bind_conf *s)
{
const char *servername;
const char *wildp = NULL;
struct ebmb_node *node, *n;
int i;
(void)al; /* shut gcc stupid warning */
servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
if (!servername) {
if (s->generate_certs) {
struct connection *conn = SSL_get_app_data(ssl);
unsigned int key;
SSL_CTX *ctx;
conn_get_to_addr(conn);
if (conn->flags & CO_FL_ADDR_TO_SET) {
key = ssl_sock_generated_cert_key(&conn->addr.to, get_addr_len(&conn->addr.to));
ctx = ssl_sock_get_generated_cert(key, s);
if (ctx) {
/* switch ctx */
SSL_set_SSL_CTX(ssl, ctx);
return SSL_TLSEXT_ERR_OK;
}
}
}
return (s->strict_sni ?
SSL_TLSEXT_ERR_ALERT_FATAL :
SSL_TLSEXT_ERR_NOACK);
}
for (i = 0; i < trash.size; i++) {
if (!servername[i])
break;
trash.str[i] = tolower(servername[i]);
if (!wildp && (trash.str[i] == '.'))
wildp = &trash.str[i];
}
trash.str[i] = 0;
/* lookup in full qualified names */
node = ebst_lookup(&s->sni_ctx, trash.str);
/* lookup a not neg filter */
for (n = node; n; n = ebmb_next_dup(n)) {
if (!container_of(n, struct sni_ctx, name)->neg) {
node = n;
break;
}
}
if (!node && wildp) {
/* lookup in wildcards names */
node = ebst_lookup(&s->sni_w_ctx, wildp);
}
if (!node || container_of(node, struct sni_ctx, name)->neg) {
SSL_CTX *ctx;
if (s->generate_certs &&
(ctx = ssl_sock_generate_certificate(servername, s, ssl))) {
/* switch ctx */
return SSL_TLSEXT_ERR_OK;
}
return (s->strict_sni ?
SSL_TLSEXT_ERR_ALERT_FATAL :
SSL_TLSEXT_ERR_ALERT_WARNING);
}
/* switch ctx */
SSL_set_SSL_CTX(ssl, container_of(node, struct sni_ctx, name)->ctx);
return SSL_TLSEXT_ERR_OK;
}
#endif /* SSL_CTRL_SET_TLSEXT_HOSTNAME */
#ifndef OPENSSL_NO_DH
static DH * ssl_get_dh_1024(void)
{
static unsigned char dh1024_p[]={
0xFA,0xF9,0x2A,0x22,0x2A,0xA7,0x7F,0xE1,0x67,0x4E,0x53,0xF7,
0x56,0x13,0xC3,0xB1,0xE3,0x29,0x6B,0x66,0x31,0x6A,0x7F,0xB3,
0xC2,0x68,0x6B,0xCB,0x1D,0x57,0x39,0x1D,0x1F,0xFF,0x1C,0xC9,
0xA6,0xA4,0x98,0x82,0x31,0x5D,0x25,0xFF,0x8A,0xE0,0x73,0x96,
0x81,0xC8,0x83,0x79,0xC1,0x5A,0x04,0xF8,0x37,0x0D,0xA8,0x3D,
0xAE,0x74,0xBC,0xDB,0xB6,0xA4,0x75,0xD9,0x71,0x8A,0xA0,0x17,
0x9E,0x2D,0xC8,0xA8,0xDF,0x2C,0x5F,0x82,0x95,0xF8,0x92,0x9B,
0xA7,0x33,0x5F,0x89,0x71,0xC8,0x2D,0x6B,0x18,0x86,0xC4,0x94,
0x22,0xA5,0x52,0x8D,0xF6,0xF6,0xD2,0x37,0x92,0x0F,0xA5,0xCC,
0xDB,0x7B,0x1D,0x3D,0xA1,0x31,0xB7,0x80,0x8F,0x0B,0x67,0x5E,
0x36,0xA5,0x60,0x0C,0xF1,0x95,0x33,0x8B,
};
static unsigned char dh1024_g[]={
0x02,
};
BIGNUM *p;
BIGNUM *g;
DH *dh = DH_new();
if (dh) {
p = BN_bin2bn(dh1024_p, sizeof dh1024_p, NULL);
g = BN_bin2bn(dh1024_g, sizeof dh1024_g, NULL);
if (!p || !g) {
DH_free(dh);
dh = NULL;
} else {
DH_set0_pqg(dh, p, NULL, g);
}
}
return dh;
}
static DH *ssl_get_dh_2048(void)
{
static unsigned char dh2048_p[]={
0xEC,0x86,0xF8,0x70,0xA0,0x33,0x16,0xEC,0x05,0x1A,0x73,0x59,
0xCD,0x1F,0x8B,0xF8,0x29,0xE4,0xD2,0xCF,0x52,0xDD,0xC2,0x24,
0x8D,0xB5,0x38,0x9A,0xFB,0x5C,0xA4,0xE4,0xB2,0xDA,0xCE,0x66,
0x50,0x74,0xA6,0x85,0x4D,0x4B,0x1D,0x30,0xB8,0x2B,0xF3,0x10,
0xE9,0xA7,0x2D,0x05,0x71,0xE7,0x81,0xDF,0x8B,0x59,0x52,0x3B,
0x5F,0x43,0x0B,0x68,0xF1,0xDB,0x07,0xBE,0x08,0x6B,0x1B,0x23,
0xEE,0x4D,0xCC,0x9E,0x0E,0x43,0xA0,0x1E,0xDF,0x43,0x8C,0xEC,
0xBE,0xBE,0x90,0xB4,0x51,0x54,0xB9,0x2F,0x7B,0x64,0x76,0x4E,
0x5D,0xD4,0x2E,0xAE,0xC2,0x9E,0xAE,0x51,0x43,0x59,0xC7,0x77,
0x9C,0x50,0x3C,0x0E,0xED,0x73,0x04,0x5F,0xF1,0x4C,0x76,0x2A,
0xD8,0xF8,0xCF,0xFC,0x34,0x40,0xD1,0xB4,0x42,0x61,0x84,0x66,
0x42,0x39,0x04,0xF8,0x68,0xB2,0x62,0xD7,0x55,0xED,0x1B,0x74,
0x75,0x91,0xE0,0xC5,0x69,0xC1,0x31,0x5C,0xDB,0x7B,0x44,0x2E,
0xCE,0x84,0x58,0x0D,0x1E,0x66,0x0C,0xC8,0x44,0x9E,0xFD,0x40,
0x08,0x67,0x5D,0xFB,0xA7,0x76,0x8F,0x00,0x11,0x87,0xE9,0x93,
0xF9,0x7D,0xC4,0xBC,0x74,0x55,0x20,0xD4,0x4A,0x41,0x2F,0x43,
0x42,0x1A,0xC1,0xF2,0x97,0x17,0x49,0x27,0x37,0x6B,0x2F,0x88,
0x7E,0x1C,0xA0,0xA1,0x89,0x92,0x27,0xD9,0x56,0x5A,0x71,0xC1,
0x56,0x37,0x7E,0x3A,0x9D,0x05,0xE7,0xEE,0x5D,0x8F,0x82,0x17,
0xBC,0xE9,0xC2,0x93,0x30,0x82,0xF9,0xF4,0xC9,0xAE,0x49,0xDB,
0xD0,0x54,0xB4,0xD9,0x75,0x4D,0xFA,0x06,0xB8,0xD6,0x38,0x41,
0xB7,0x1F,0x77,0xF3,
};
static unsigned char dh2048_g[]={
0x02,
};
BIGNUM *p;
BIGNUM *g;
DH *dh = DH_new();
if (dh) {
p = BN_bin2bn(dh2048_p, sizeof dh2048_p, NULL);
g = BN_bin2bn(dh2048_g, sizeof dh2048_g, NULL);
if (!p || !g) {
DH_free(dh);
dh = NULL;
} else {
DH_set0_pqg(dh, p, NULL, g);
}
}
return dh;
}
static DH *ssl_get_dh_4096(void)
{
static unsigned char dh4096_p[]={
0xDE,0x16,0x94,0xCD,0x99,0x58,0x07,0xF1,0xF7,0x32,0x96,0x11,
0x04,0x82,0xD4,0x84,0x72,0x80,0x99,0x06,0xCA,0xF0,0xA3,0x68,
0x07,0xCE,0x64,0x50,0xE7,0x74,0x45,0x20,0x80,0x5E,0x4D,0xAD,
0xA5,0xB6,0xED,0xFA,0x80,0x6C,0x3B,0x35,0xC4,0x9A,0x14,0x6B,
0x32,0xBB,0xFD,0x1F,0x17,0x8E,0xB7,0x1F,0xD6,0xFA,0x3F,0x7B,
0xEE,0x16,0xA5,0x62,0x33,0x0D,0xED,0xBC,0x4E,0x58,0xE5,0x47,
0x4D,0xE9,0xAB,0x8E,0x38,0xD3,0x6E,0x90,0x57,0xE3,0x22,0x15,
0x33,0xBD,0xF6,0x43,0x45,0xB5,0x10,0x0A,0xBE,0x2C,0xB4,0x35,
0xB8,0x53,0x8D,0xAD,0xFB,0xA7,0x1F,0x85,0x58,0x41,0x7A,0x79,
0x20,0x68,0xB3,0xE1,0x3D,0x08,0x76,0xBF,0x86,0x0D,0x49,0xE3,
0x82,0x71,0x8C,0xB4,0x8D,0x81,0x84,0xD4,0xE7,0xBE,0x91,0xDC,
0x26,0x39,0x48,0x0F,0x35,0xC4,0xCA,0x65,0xE3,0x40,0x93,0x52,
0x76,0x58,0x7D,0xDD,0x51,0x75,0xDC,0x69,0x61,0xBF,0x47,0x2C,
0x16,0x68,0x2D,0xC9,0x29,0xD3,0xE6,0xC0,0x99,0x48,0xA0,0x9A,
0xC8,0x78,0xC0,0x6D,0x81,0x67,0x12,0x61,0x3F,0x71,0xBA,0x41,
0x1F,0x6C,0x89,0x44,0x03,0xBA,0x3B,0x39,0x60,0xAA,0x28,0x55,
0x59,0xAE,0xB8,0xFA,0xCB,0x6F,0xA5,0x1A,0xF7,0x2B,0xDD,0x52,
0x8A,0x8B,0xE2,0x71,0xA6,0x5E,0x7E,0xD8,0x2E,0x18,0xE0,0x66,
0xDF,0xDD,0x22,0x21,0x99,0x52,0x73,0xA6,0x33,0x20,0x65,0x0E,
0x53,0xE7,0x6B,0x9B,0xC5,0xA3,0x2F,0x97,0x65,0x76,0xD3,0x47,
0x23,0x77,0x12,0xB6,0x11,0x7B,0x24,0xED,0xF1,0xEF,0xC0,0xE2,
0xA3,0x7E,0x67,0x05,0x3E,0x96,0x4D,0x45,0xC2,0x18,0xD1,0x73,
0x9E,0x07,0xF3,0x81,0x6E,0x52,0x63,0xF6,0x20,0x76,0xB9,0x13,
0xD2,0x65,0x30,0x18,0x16,0x09,0x16,0x9E,0x8F,0xF1,0xD2,0x10,
0x5A,0xD3,0xD4,0xAF,0x16,0x61,0xDA,0x55,0x2E,0x18,0x5E,0x14,
0x08,0x54,0x2E,0x2A,0x25,0xA2,0x1A,0x9B,0x8B,0x32,0xA9,0xFD,
0xC2,0x48,0x96,0xE1,0x80,0xCA,0xE9,0x22,0x17,0xBB,0xCE,0x3E,
0x9E,0xED,0xC7,0xF1,0x1F,0xEC,0x17,0x21,0xDC,0x7B,0x82,0x48,
0x8E,0xBB,0x4B,0x9D,0x5B,0x04,0x04,0xDA,0xDB,0x39,0xDF,0x01,
0x40,0xC3,0xAA,0x26,0x23,0x89,0x75,0xC6,0x0B,0xD0,0xA2,0x60,
0x6A,0xF1,0xCC,0x65,0x18,0x98,0x1B,0x52,0xD2,0x74,0x61,0xCC,
0xBD,0x60,0xAE,0xA3,0xA0,0x66,0x6A,0x16,0x34,0x92,0x3F,0x41,
0x40,0x31,0x29,0xC0,0x2C,0x63,0xB2,0x07,0x8D,0xEB,0x94,0xB8,
0xE8,0x47,0x92,0x52,0x93,0x6A,0x1B,0x7E,0x1A,0x61,0xB3,0x1B,
0xF0,0xD6,0x72,0x9B,0xF1,0xB0,0xAF,0xBF,0x3E,0x65,0xEF,0x23,
0x1D,0x6F,0xFF,0x70,0xCD,0x8A,0x4C,0x8A,0xA0,0x72,0x9D,0xBE,
0xD4,0xBB,0x24,0x47,0x4A,0x68,0xB5,0xF5,0xC6,0xD5,0x7A,0xCD,
0xCA,0x06,0x41,0x07,0xAD,0xC2,0x1E,0xE6,0x54,0xA7,0xAD,0x03,
0xD9,0x12,0xC1,0x9C,0x13,0xB1,0xC9,0x0A,0x43,0x8E,0x1E,0x08,
0xCE,0x50,0x82,0x73,0x5F,0xA7,0x55,0x1D,0xD9,0x59,0xAC,0xB5,
0xEA,0x02,0x7F,0x6C,0x5B,0x74,0x96,0x98,0x67,0x24,0xA3,0x0F,
0x15,0xFC,0xA9,0x7D,0x3E,0x67,0xD1,0x70,0xF8,0x97,0xF3,0x67,
0xC5,0x8C,0x88,0x44,0x08,0x02,0xC7,0x2B,
};
static unsigned char dh4096_g[]={
0x02,
};
BIGNUM *p;
BIGNUM *g;
DH *dh = DH_new();
if (dh) {
p = BN_bin2bn(dh4096_p, sizeof dh4096_p, NULL);
g = BN_bin2bn(dh4096_g, sizeof dh4096_g, NULL);
if (!p || !g) {
DH_free(dh);
dh = NULL;
} else {
DH_set0_pqg(dh, p, NULL, g);
}
}
return dh;
}
/* Returns Diffie-Hellman parameters matching the private key length
but not exceeding global_ssl.default_dh_param */
static DH *ssl_get_tmp_dh(SSL *ssl, int export, int keylen)
{
DH *dh = NULL;
EVP_PKEY *pkey = SSL_get_privatekey(ssl);
int type;
type = pkey ? EVP_PKEY_base_id(pkey) : EVP_PKEY_NONE;
/* The keylen supplied by OpenSSL can only be 512 or 1024.
See ssl3_send_server_key_exchange() in ssl/s3_srvr.c
*/
if (type == EVP_PKEY_RSA || type == EVP_PKEY_DSA) {
keylen = EVP_PKEY_bits(pkey);
}
if (keylen > global_ssl.default_dh_param) {
keylen = global_ssl.default_dh_param;
}
if (keylen >= 4096) {
dh = local_dh_4096;
}
else if (keylen >= 2048) {
dh = local_dh_2048;
}
else {
dh = local_dh_1024;
}
return dh;
}
static DH * ssl_sock_get_dh_from_file(const char *filename)
{
DH *dh = NULL;
BIO *in = BIO_new(BIO_s_file());
if (in == NULL)
goto end;
if (BIO_read_filename(in, filename) <= 0)
goto end;
dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
end:
if (in)
BIO_free(in);
return dh;
}
int ssl_sock_load_global_dh_param_from_file(const char *filename)
{
global_dh = ssl_sock_get_dh_from_file(filename);
if (global_dh) {
return 0;
}
return -1;
}
/* Loads Diffie-Hellman parameter from a file. Returns 1 if loaded, else -1
if an error occured, and 0 if parameter not found. */
int ssl_sock_load_dh_params(SSL_CTX *ctx, const char *file)
{
int ret = -1;
DH *dh = ssl_sock_get_dh_from_file(file);
if (dh) {
ret = 1;
SSL_CTX_set_tmp_dh(ctx, dh);
if (ssl_dh_ptr_index >= 0) {
/* store a pointer to the DH params to avoid complaining about
ssl-default-dh-param not being set for this SSL_CTX */
SSL_CTX_set_ex_data(ctx, ssl_dh_ptr_index, dh);
}
}
else if (global_dh) {
SSL_CTX_set_tmp_dh(ctx, global_dh);
ret = 0; /* DH params not found */
}
else {
/* Clear openssl global errors stack */
ERR_clear_error();
if (global_ssl.default_dh_param <= 1024) {
/* we are limited to DH parameter of 1024 bits anyway */
if (local_dh_1024 == NULL)
local_dh_1024 = ssl_get_dh_1024();
if (local_dh_1024 == NULL)
goto end;
SSL_CTX_set_tmp_dh(ctx, local_dh_1024);
}
else {
SSL_CTX_set_tmp_dh_callback(ctx, ssl_get_tmp_dh);
}
ret = 0; /* DH params not found */
}
end:
if (dh)
DH_free(dh);
return ret;
}
#endif
static int ssl_sock_add_cert_sni(SSL_CTX *ctx, struct bind_conf *s, char *name, int order)
{
struct sni_ctx *sc;
int wild = 0, neg = 0;
struct ebmb_node *node;
if (*name == '!') {
neg = 1;
name++;
}
if (*name == '*') {
wild = 1;
name++;
}
/* !* filter is a nop */
if (neg && wild)
return order;
if (*name) {
int j, len;
len = strlen(name);
for (j = 0; j < len && j < trash.size; j++)
trash.str[j] = tolower(name[j]);
if (j >= trash.size)
return order;
trash.str[j] = 0;
/* Check for duplicates. */
if (wild)
node = ebst_lookup(&s->sni_w_ctx, trash.str);
else
node = ebst_lookup(&s->sni_ctx, trash.str);
for (; node; node = ebmb_next_dup(node)) {
sc = ebmb_entry(node, struct sni_ctx, name);
if (sc->ctx == ctx && sc->neg == neg)
return order;
}
sc = malloc(sizeof(struct sni_ctx) + len + 1);
if (!sc)
return order;
memcpy(sc->name.key, trash.str, len + 1);
sc->ctx = ctx;
sc->order = order++;
sc->neg = neg;
if (wild)
ebst_insert(&s->sni_w_ctx, &sc->name);
else
ebst_insert(&s->sni_ctx, &sc->name);
}
return order;
}
/* The following code is used for loading multiple crt files into
* SSL_CTX's based on CN/SAN
*/
#if OPENSSL_VERSION_NUMBER >= 0x1000200fL && !defined(LIBRESSL_VERSION_NUMBER)
/* This is used to preload the certifcate, private key
* and Cert Chain of a file passed in via the crt
* argument
*
* This way, we do not have to read the file multiple times
*/
struct cert_key_and_chain {
X509 *cert;
EVP_PKEY *key;
unsigned int num_chain_certs;
/* This is an array of X509 pointers */
X509 **chain_certs;
};
#define SSL_SOCK_POSSIBLE_KT_COMBOS (1<<(SSL_SOCK_NUM_KEYTYPES))
struct key_combo_ctx {
SSL_CTX *ctx;
int order;
};
/* Map used for processing multiple keypairs for a single purpose
*
* This maps CN/SNI name to certificate type
*/
struct sni_keytype {
int keytypes; /* BITMASK for keytypes */
struct ebmb_node name; /* node holding the servername value */
};
/* Frees the contents of a cert_key_and_chain
*/
static void ssl_sock_free_cert_key_and_chain_contents(struct cert_key_and_chain *ckch)
{
int i;
if (!ckch)
return;
/* Free the certificate and set pointer to NULL */
if (ckch->cert)
X509_free(ckch->cert);
ckch->cert = NULL;
/* Free the key and set pointer to NULL */
if (ckch->key)
EVP_PKEY_free(ckch->key);
ckch->key = NULL;
/* Free each certificate in the chain */
for (i = 0; i < ckch->num_chain_certs; i++) {
if (ckch->chain_certs[i])
X509_free(ckch->chain_certs[i]);
}
/* Free the chain obj itself and set to NULL */
if (ckch->num_chain_certs > 0) {
free(ckch->chain_certs);
ckch->num_chain_certs = 0;
ckch->chain_certs = NULL;
}
}
/* checks if a key and cert exists in the ckch
*/
static int ssl_sock_is_ckch_valid(struct cert_key_and_chain *ckch)
{
return (ckch->cert != NULL && ckch->key != NULL);
}
/* Loads the contents of a crt file (path) into a cert_key_and_chain
* This allows us to carry the contents of the file without having to
* read the file multiple times.
*
* returns:
* 0 on Success
* 1 on SSL Failure
* 2 on file not found
*/
static int ssl_sock_load_crt_file_into_ckch(const char *path, struct cert_key_and_chain *ckch, char **err)
{
BIO *in;
X509 *ca = NULL;
int ret = 1;
ssl_sock_free_cert_key_and_chain_contents(ckch);
in = BIO_new(BIO_s_file());
if (in == NULL)
goto end;
if (BIO_read_filename(in, path) <= 0)
goto end;
/* Read Private Key */
ckch->key = PEM_read_bio_PrivateKey(in, NULL, NULL, NULL);
if (ckch->key == NULL) {
memprintf(err, "%sunable to load private key from file '%s'.\n",
err && *err ? *err : "", path);
goto end;
}
/* Seek back to beginning of file */
if (BIO_reset(in) == -1) {
memprintf(err, "%san error occurred while reading the file '%s'.\n",
err && *err ? *err : "", path);
goto end;
}
/* Read Certificate */
ckch->cert = PEM_read_bio_X509_AUX(in, NULL, NULL, NULL);
if (ckch->cert == NULL) {
memprintf(err, "%sunable to load certificate from file '%s'.\n",
err && *err ? *err : "", path);
goto end;
}
/* Read Certificate Chain */
while ((ca = PEM_read_bio_X509(in, NULL, NULL, NULL))) {
/* Grow the chain certs */
ckch->num_chain_certs++;
ckch->chain_certs = realloc(ckch->chain_certs, (ckch->num_chain_certs * sizeof(X509 *)));
/* use - 1 here since we just incremented it above */
ckch->chain_certs[ckch->num_chain_certs - 1] = ca;
}
ret = ERR_get_error();
if (ret && (ERR_GET_LIB(ret) != ERR_LIB_PEM && ERR_GET_REASON(ret) != PEM_R_NO_START_LINE)) {
memprintf(err, "%sunable to load certificate chain from file '%s'.\n",
err && *err ? *err : "", path);
ret = 1;
goto end;
}
ret = 0;
end:
ERR_clear_error();
if (in)
BIO_free(in);
/* Something went wrong in one of the reads */
if (ret != 0)
ssl_sock_free_cert_key_and_chain_contents(ckch);
return ret;
}
/* Loads the info in ckch into ctx
* Currently, this does not process any information about ocsp, dhparams or
* sctl
* Returns
* 0 on success
* 1 on failure
*/
static int ssl_sock_put_ckch_into_ctx(const char *path, const struct cert_key_and_chain *ckch, SSL_CTX *ctx, char **err)
{
int i = 0;
if (SSL_CTX_use_PrivateKey(ctx, ckch->key) <= 0) {
memprintf(err, "%sunable to load SSL private key into SSL Context '%s'.\n",
err && *err ? *err : "", path);
return 1;
}
if (!SSL_CTX_use_certificate(ctx, ckch->cert)) {
memprintf(err, "%sunable to load SSL certificate into SSL Context '%s'.\n",
err && *err ? *err : "", path);
return 1;
}
/* Load all certs in the ckch into the ctx_chain for the ssl_ctx */
for (i = 0; i < ckch->num_chain_certs; i++) {
if (!SSL_CTX_add1_chain_cert(ctx, ckch->chain_certs[i])) {
memprintf(err, "%sunable to load chain certificate #%d into SSL Context '%s'. Make sure you are linking against Openssl >= 1.0.2.\n",
err && *err ? *err : "", (i+1), path);
return 1;
}
}
if (SSL_CTX_check_private_key(ctx) <= 0) {
memprintf(err, "%sinconsistencies between private key and certificate loaded from PEM file '%s'.\n",
err && *err ? *err : "", path);
return 1;
}
return 0;
}
static void ssl_sock_populate_sni_keytypes_hplr(const char *str, struct eb_root *sni_keytypes, int key_index)
{
struct sni_keytype *s_kt = NULL;
struct ebmb_node *node;
int i;
for (i = 0; i < trash.size; i++) {
if (!str[i])
break;
trash.str[i] = tolower(str[i]);
}
trash.str[i] = 0;
node = ebst_lookup(sni_keytypes, trash.str);
if (!node) {
/* CN not found in tree */
s_kt = malloc(sizeof(struct sni_keytype) + i + 1);
/* Using memcpy here instead of strncpy.
* strncpy will cause sig_abrt errors under certain versions of gcc with -O2
* See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60792
*/
memcpy(s_kt->name.key, trash.str, i+1);
s_kt->keytypes = 0;
ebst_insert(sni_keytypes, &s_kt->name);
} else {
/* CN found in tree */
s_kt = container_of(node, struct sni_keytype, name);
}
/* Mark that this CN has the keytype of key_index via keytypes mask */
s_kt->keytypes |= 1<<key_index;
}
/* Given a path that does not exist, try to check for path.rsa, path.dsa and path.ecdsa files.
* If any are found, group these files into a set of SSL_CTX*
* based on shared and unique CN and SAN entries. Add these SSL_CTX* to the SNI tree.
*
* This will allow the user to explictly group multiple cert/keys for a single purpose
*
* Returns
* 0 on success
* 1 on failure
*/
static int ssl_sock_load_multi_cert(const char *path, struct bind_conf *bind_conf, char **sni_filter, int fcount, char **err)
{
char fp[MAXPATHLEN+1] = {0};
int n = 0;
int i = 0;
struct cert_key_and_chain certs_and_keys[SSL_SOCK_NUM_KEYTYPES] = { {0} };
struct eb_root sni_keytypes_map = { {0} };
struct ebmb_node *node;
struct ebmb_node *next;
/* Array of SSL_CTX pointers corresponding to each possible combo
* of keytypes
*/
struct key_combo_ctx key_combos[SSL_SOCK_POSSIBLE_KT_COMBOS] = { {0} };
int rv = 0;
X509_NAME *xname = NULL;
char *str = NULL;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
STACK_OF(GENERAL_NAME) *names = NULL;
#endif
/* Load all possible certs and keys */
for (n = 0; n < SSL_SOCK_NUM_KEYTYPES; n++) {
struct stat buf;
snprintf(fp, sizeof(fp), "%s.%s", path, SSL_SOCK_KEYTYPE_NAMES[n]);
if (stat(fp, &buf) == 0) {
if (ssl_sock_load_crt_file_into_ckch(fp, &certs_and_keys[n], err) == 1) {
rv = 1;
goto end;
}
}
}
/* Process each ckch and update keytypes for each CN/SAN
* for example, if CN/SAN www.a.com is associated with
* certs with keytype 0 and 2, then at the end of the loop,
* www.a.com will have:
* keyindex = 0 | 1 | 4 = 5
*/
for (n = 0; n < SSL_SOCK_NUM_KEYTYPES; n++) {
if (!ssl_sock_is_ckch_valid(&certs_and_keys[n]))
continue;
if (fcount) {
for (i = 0; i < fcount; i++)
ssl_sock_populate_sni_keytypes_hplr(sni_filter[i], &sni_keytypes_map, n);
} else {
/* A lot of the following code is OpenSSL boilerplate for processing CN's and SAN's,
* so the line that contains logic is marked via comments
*/
xname = X509_get_subject_name(certs_and_keys[n].cert);
i = -1;
while ((i = X509_NAME_get_index_by_NID(xname, NID_commonName, i)) != -1) {
X509_NAME_ENTRY *entry = X509_NAME_get_entry(xname, i);
ASN1_STRING *value;
value = X509_NAME_ENTRY_get_data(entry);
if (ASN1_STRING_to_UTF8((unsigned char **)&str, value) >= 0) {
/* Important line is here */
ssl_sock_populate_sni_keytypes_hplr(str, &sni_keytypes_map, n);
OPENSSL_free(str);
str = NULL;
}
}
/* Do the above logic for each SAN */
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
names = X509_get_ext_d2i(certs_and_keys[n].cert, NID_subject_alt_name, NULL, NULL);
if (names) {
for (i = 0; i < sk_GENERAL_NAME_num(names); i++) {
GENERAL_NAME *name = sk_GENERAL_NAME_value(names, i);
if (name->type == GEN_DNS) {
if (ASN1_STRING_to_UTF8((unsigned char **)&str, name->d.dNSName) >= 0) {
/* Important line is here */
ssl_sock_populate_sni_keytypes_hplr(str, &sni_keytypes_map, n);
OPENSSL_free(str);
str = NULL;
}
}
}
}
}
#endif /* SSL_CTRL_SET_TLSEXT_HOSTNAME */
}
/* If no files found, return error */
if (eb_is_empty(&sni_keytypes_map)) {
memprintf(err, "%sunable to load SSL certificate file '%s' file does not exist.\n",
err && *err ? *err : "", path);
rv = 1;
goto end;
}
/* We now have a map of CN/SAN to keytypes that are loaded in
* Iterate through the map to create the SSL_CTX's (if needed)
* and add each CTX to the SNI tree
*
* Some math here:
* There are 2^n - 1 possibile combinations, each unique
* combination is denoted by the key in the map. Each key
* has a value between 1 and 2^n - 1. Conveniently, the array
* of SSL_CTX* is sized 2^n. So, we can simply use the i'th
* entry in the array to correspond to the unique combo (key)
* associated with i. This unique key combo (i) will be associated
* with combos[i-1]
*/
node = ebmb_first(&sni_keytypes_map);
while (node) {
SSL_CTX *cur_ctx;
char cur_file[MAXPATHLEN+1];
str = (char *)container_of(node, struct sni_keytype, name)->name.key;
i = container_of(node, struct sni_keytype, name)->keytypes;
cur_ctx = key_combos[i-1].ctx;
if (cur_ctx == NULL) {
/* need to create SSL_CTX */
cur_ctx = SSL_CTX_new(SSLv23_server_method());
if (cur_ctx == NULL) {
memprintf(err, "%sunable to allocate SSL context.\n",
err && *err ? *err : "");
rv = 1;
goto end;
}
/* Load all required certs/keys/chains/OCSPs info into SSL_CTX */
for (n = 0; n < SSL_SOCK_NUM_KEYTYPES; n++) {
if (i & (1<<n)) {
/* Key combo contains ckch[n] */
snprintf(cur_file, MAXPATHLEN+1, "%s.%s", path, SSL_SOCK_KEYTYPE_NAMES[n]);
if (ssl_sock_put_ckch_into_ctx(cur_file, &certs_and_keys[n], cur_ctx, err) != 0) {
SSL_CTX_free(cur_ctx);
rv = 1;
goto end;
}
#if (defined SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB && !defined OPENSSL_NO_OCSP)
/* Load OCSP Info into context */
if (ssl_sock_load_ocsp(cur_ctx, cur_file) < 0) {
if (err)
memprintf(err, "%s '%s.ocsp' is present and activates OCSP but it is impossible to compute the OCSP certificate ID (maybe the issuer could not be found)'.\n",
*err ? *err : "", cur_file);
SSL_CTX_free(cur_ctx);
rv = 1;
goto end;
}
#endif
}
}
/* Load DH params into the ctx to support DHE keys */
#ifndef OPENSSL_NO_DH
if (ssl_dh_ptr_index >= 0)
SSL_CTX_set_ex_data(cur_ctx, ssl_dh_ptr_index, NULL);
rv = ssl_sock_load_dh_params(cur_ctx, NULL);
if (rv < 0) {
if (err)
memprintf(err, "%sunable to load DH parameters from file '%s'.\n",
*err ? *err : "", path);
rv = 1;
goto end;
}
#endif
/* Update key_combos */
key_combos[i-1].ctx = cur_ctx;
}
/* Update SNI Tree */
key_combos[i-1].order = ssl_sock_add_cert_sni(cur_ctx, bind_conf, str, key_combos[i-1].order);
node = ebmb_next(node);
}
/* Mark a default context if none exists, using the ctx that has the most shared keys */
if (!bind_conf->default_ctx) {
for (i = SSL_SOCK_POSSIBLE_KT_COMBOS - 1; i >= 0; i--) {
if (key_combos[i].ctx) {
bind_conf->default_ctx = key_combos[i].ctx;
break;
}
}
}
end:
if (names)
sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
for (n = 0; n < SSL_SOCK_NUM_KEYTYPES; n++)
ssl_sock_free_cert_key_and_chain_contents(&certs_and_keys[n]);
node = ebmb_first(&sni_keytypes_map);
while (node) {
next = ebmb_next(node);
ebmb_delete(node);
node = next;
}
return rv;
}
#else
/* This is a dummy, that just logs an error and returns error */
static int ssl_sock_load_multi_cert(const char *path, struct bind_conf *bind_conf, char **sni_filter, int fcount, char **err)
{
memprintf(err, "%sunable to stat SSL certificate from file '%s' : %s.\n",
err && *err ? *err : "", path, strerror(errno));
return 1;
}
#endif /* #if OPENSSL_VERSION_NUMBER >= 0x1000200fL: Support for loading multiple certs into a single SSL_CTX */
/* Loads a certificate key and CA chain from a file. Returns 0 on error, -1 if
* an early error happens and the caller must call SSL_CTX_free() by itelf.
*/
static int ssl_sock_load_cert_chain_file(SSL_CTX *ctx, const char *file, struct bind_conf *s, char **sni_filter, int fcount)
{
BIO *in;
X509 *x = NULL, *ca;
int i, err;
int ret = -1;
int order = 0;
X509_NAME *xname;
char *str;
pem_password_cb *passwd_cb;
void *passwd_cb_userdata;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
STACK_OF(GENERAL_NAME) *names;
#endif
in = BIO_new(BIO_s_file());
if (in == NULL)
goto end;
if (BIO_read_filename(in, file) <= 0)
goto end;
passwd_cb = SSL_CTX_get_default_passwd_cb(ctx);
passwd_cb_userdata = SSL_CTX_get_default_passwd_cb_userdata(ctx);
x = PEM_read_bio_X509_AUX(in, NULL, passwd_cb, passwd_cb_userdata);
if (x == NULL)
goto end;
if (fcount) {
while (fcount--)
order = ssl_sock_add_cert_sni(ctx, s, sni_filter[fcount], order);
}
else {
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
names = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
if (names) {
for (i = 0; i < sk_GENERAL_NAME_num(names); i++) {
GENERAL_NAME *name = sk_GENERAL_NAME_value(names, i);
if (name->type == GEN_DNS) {
if (ASN1_STRING_to_UTF8((unsigned char **)&str, name->d.dNSName) >= 0) {
order = ssl_sock_add_cert_sni(ctx, s, str, order);
OPENSSL_free(str);
}
}
}
sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
}
#endif /* SSL_CTRL_SET_TLSEXT_HOSTNAME */
xname = X509_get_subject_name(x);
i = -1;
while ((i = X509_NAME_get_index_by_NID(xname, NID_commonName, i)) != -1) {
X509_NAME_ENTRY *entry = X509_NAME_get_entry(xname, i);
ASN1_STRING *value;
value = X509_NAME_ENTRY_get_data(entry);
if (ASN1_STRING_to_UTF8((unsigned char **)&str, value) >= 0) {
order = ssl_sock_add_cert_sni(ctx, s, str, order);
OPENSSL_free(str);
}
}
}
ret = 0; /* the caller must not free the SSL_CTX argument anymore */
if (!SSL_CTX_use_certificate(ctx, x))
goto end;
#ifdef SSL_CTX_clear_extra_chain_certs
SSL_CTX_clear_extra_chain_certs(ctx);
#else
if (ctx->extra_certs != NULL) {
sk_X509_pop_free(ctx->extra_certs, X509_free);
ctx->extra_certs = NULL;
}
#endif
while ((ca = PEM_read_bio_X509(in, NULL, passwd_cb, passwd_cb_userdata))) {
if (!SSL_CTX_add_extra_chain_cert(ctx, ca)) {
X509_free(ca);
goto end;
}
}
err = ERR_get_error();
if (!err || (ERR_GET_LIB(err) == ERR_LIB_PEM && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)) {
/* we successfully reached the last cert in the file */
ret = 1;
}
ERR_clear_error();
end:
if (x)
X509_free(x);
if (in)
BIO_free(in);
return ret;
}
static int ssl_sock_load_cert_file(const char *path, struct bind_conf *bind_conf, char **sni_filter, int fcount, char **err)
{
int ret;
SSL_CTX *ctx;
ctx = SSL_CTX_new(SSLv23_server_method());
if (!ctx) {
memprintf(err, "%sunable to allocate SSL context for cert '%s'.\n",
err && *err ? *err : "", path);
return 1;
}
if (SSL_CTX_use_PrivateKey_file(ctx, path, SSL_FILETYPE_PEM) <= 0) {
memprintf(err, "%sunable to load SSL private key from PEM file '%s'.\n",
err && *err ? *err : "", path);
SSL_CTX_free(ctx);
return 1;
}
ret = ssl_sock_load_cert_chain_file(ctx, path, bind_conf, sni_filter, fcount);
if (ret <= 0) {
memprintf(err, "%sunable to load SSL certificate from PEM file '%s'.\n",
err && *err ? *err : "", path);
if (ret < 0) /* serious error, must do that ourselves */
SSL_CTX_free(ctx);
return 1;
}
if (SSL_CTX_check_private_key(ctx) <= 0) {
memprintf(err, "%sinconsistencies between private key and certificate loaded from PEM file '%s'.\n",
err && *err ? *err : "", path);
return 1;
}
/* we must not free the SSL_CTX anymore below, since it's already in
* the tree, so it will be discovered and cleaned in time.
*/
#ifndef OPENSSL_NO_DH
/* store a NULL pointer to indicate we have not yet loaded
a custom DH param file */
if (ssl_dh_ptr_index >= 0) {
SSL_CTX_set_ex_data(ctx, ssl_dh_ptr_index, NULL);
}
ret = ssl_sock_load_dh_params(ctx, path);
if (ret < 0) {
if (err)
memprintf(err, "%sunable to load DH parameters from file '%s'.\n",
*err ? *err : "", path);
return 1;
}
#endif
#if (defined SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB && !defined OPENSSL_NO_OCSP)
ret = ssl_sock_load_ocsp(ctx, path);
if (ret < 0) {
if (err)
memprintf(err, "%s '%s.ocsp' is present and activates OCSP but it is impossible to compute the OCSP certificate ID (maybe the issuer could not be found)'.\n",
*err ? *err : "", path);
return 1;
}
#endif
#if (OPENSSL_VERSION_NUMBER >= 0x1000200fL && !defined OPENSSL_NO_TLSEXT && !defined OPENSSL_IS_BORINGSSL && !defined LIBRESSL_VERSION_NUMBER)
if (sctl_ex_index >= 0) {
ret = ssl_sock_load_sctl(ctx, path);
if (ret < 0) {
if (err)
memprintf(err, "%s '%s.sctl' is present but cannot be read or parsed'.\n",
*err ? *err : "", path);
return 1;
}
}
#endif
#ifndef SSL_CTRL_SET_TLSEXT_HOSTNAME
if (bind_conf->default_ctx) {
memprintf(err, "%sthis version of openssl cannot load multiple SSL certificates.\n",
err && *err ? *err : "");
return 1;
}
#endif
if (!bind_conf->default_ctx)
bind_conf->default_ctx = ctx;
return 0;
}
int ssl_sock_load_cert(char *path, struct bind_conf *bind_conf, char **err)
{
struct dirent **de_list;
int i, n;
DIR *dir;
struct stat buf;
char *end;
char fp[MAXPATHLEN+1];
int cfgerr = 0;
#if OPENSSL_VERSION_NUMBER >= 0x1000200fL
int is_bundle;
int j;
#endif
if (stat(path, &buf) == 0) {
dir = opendir(path);
if (!dir)
return ssl_sock_load_cert_file(path, bind_conf, NULL, 0, err);
/* strip trailing slashes, including first one */
for (end = path + strlen(path) - 1; end >= path && *end == '/'; end--)
*end = 0;
n = scandir(path, &de_list, 0, alphasort);
if (n < 0) {
memprintf(err, "%sunable to scan directory '%s' : %s.\n",
err && *err ? *err : "", path, strerror(errno));
cfgerr++;
}
else {
for (i = 0; i < n; i++) {
struct dirent *de = de_list[i];
end = strrchr(de->d_name, '.');
if (end && (!strcmp(end, ".issuer") || !strcmp(end, ".ocsp") || !strcmp(end, ".sctl")))
goto ignore_entry;
snprintf(fp, sizeof(fp), "%s/%s", path, de->d_name);
if (stat(fp, &buf) != 0) {
memprintf(err, "%sunable to stat SSL certificate from file '%s' : %s.\n",
err && *err ? *err : "", fp, strerror(errno));
cfgerr++;
goto ignore_entry;
}
if (!S_ISREG(buf.st_mode))
goto ignore_entry;
#if OPENSSL_VERSION_NUMBER >= 0x1000200fL
is_bundle = 0;
/* Check if current entry in directory is part of a multi-cert bundle */
if (end) {
for (j = 0; j < SSL_SOCK_NUM_KEYTYPES; j++) {
if (!strcmp(end + 1, SSL_SOCK_KEYTYPE_NAMES[j])) {
is_bundle = 1;
break;
}
}
if (is_bundle) {
char dp[MAXPATHLEN+1] = {0}; /* this will be the filename w/o the keytype */
int dp_len;
dp_len = end - de->d_name;
snprintf(dp, dp_len + 1, "%s", de->d_name);
/* increment i and free de until we get to a non-bundle cert
* Note here that we look at de_list[i + 1] before freeing de
* this is important since ignore_entry will free de
*/
while (i + 1 < n && !strncmp(de_list[i + 1]->d_name, dp, dp_len)) {
free(de);
i++;
de = de_list[i];
}
snprintf(fp, sizeof(fp), "%s/%s", path, dp);
ssl_sock_load_multi_cert(fp, bind_conf, NULL, 0, err);
/* Successfully processed the bundle */
goto ignore_entry;
}
}
#endif
cfgerr += ssl_sock_load_cert_file(fp, bind_conf, NULL, 0, err);
ignore_entry:
free(de);
}
free(de_list);
}
closedir(dir);
return cfgerr;
}
cfgerr = ssl_sock_load_multi_cert(path, bind_conf, NULL, 0, err);
return cfgerr;
}
/* Make sure openssl opens /dev/urandom before the chroot. The work is only
* done once. Zero is returned if the operation fails. No error is returned
* if the random is said as not implemented, because we expect that openssl
* will use another method once needed.
*/
static int ssl_initialize_random()
{
unsigned char random;
static int random_initialized = 0;
if (!random_initialized && RAND_bytes(&random, 1) != 0)
random_initialized = 1;
return random_initialized;
}
int ssl_sock_load_cert_list_file(char *file, struct bind_conf *bind_conf, char **err)
{
char thisline[LINESIZE*CRTLIST_FACTOR];
FILE *f;
struct stat buf;
int linenum = 0;
int cfgerr = 0;
if ((f = fopen(file, "r")) == NULL) {
memprintf(err, "cannot open file '%s' : %s", file, strerror(errno));
return 1;
}
while (fgets(thisline, sizeof(thisline), f) != NULL) {
int arg;
int newarg;
char *end;
char *args[MAX_LINE_ARGS*CRTLIST_FACTOR + 1];
char *line = thisline;
linenum++;
end = line + strlen(line);
if (end-line == sizeof(thisline)-1 && *(end-1) != '\n') {
/* Check if we reached the limit and the last char is not \n.
* Watch out for the last line without the terminating '\n'!
*/
memprintf(err, "line %d too long in file '%s', limit is %d characters",
linenum, file, (int)sizeof(thisline)-1);
cfgerr = 1;
break;
}
arg = 0;
newarg = 1;
while (*line) {
if (*line == '#' || *line == '\n' || *line == '\r') {
/* end of string, end of loop */
*line = 0;
break;
}
else if (isspace(*line)) {
newarg = 1;
*line = 0;
}
else if (newarg) {
if (arg == MAX_LINE_ARGS*CRTLIST_FACTOR) {
memprintf(err, "too many args on line %d in file '%s'.",
linenum, file);
cfgerr = 1;
break;
}
newarg = 0;
args[arg++] = line;
}
line++;
}
if (cfgerr)
break;
/* empty line */
if (!arg)
continue;
if (stat(args[0], &buf) == 0) {
cfgerr = ssl_sock_load_cert_file(args[0], bind_conf, &args[1], arg-1, err);
} else {
cfgerr = ssl_sock_load_multi_cert(args[0], bind_conf, &args[1], arg-1, err);
}
if (cfgerr) {
memprintf(err, "error processing line %d in file '%s' : %s", linenum, file, *err);
break;
}
}
fclose(f);
return cfgerr;
}
#ifndef SSL_OP_CIPHER_SERVER_PREFERENCE /* needs OpenSSL >= 0.9.7 */
#define SSL_OP_CIPHER_SERVER_PREFERENCE 0
#endif
#ifndef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION /* needs OpenSSL >= 0.9.7 */
#define SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION 0
#define SSL_renegotiate_pending(arg) 0
#endif
#ifndef SSL_OP_SINGLE_ECDH_USE /* needs OpenSSL >= 0.9.8 */
#define SSL_OP_SINGLE_ECDH_USE 0
#endif
#ifndef SSL_OP_NO_TICKET /* needs OpenSSL >= 0.9.8 */
#define SSL_OP_NO_TICKET 0
#endif
#ifndef SSL_OP_NO_COMPRESSION /* needs OpenSSL >= 0.9.9 */
#define SSL_OP_NO_COMPRESSION 0
#endif
#ifndef SSL_OP_NO_TLSv1_1 /* needs OpenSSL >= 1.0.1 */
#define SSL_OP_NO_TLSv1_1 0
#endif
#ifndef SSL_OP_NO_TLSv1_2 /* needs OpenSSL >= 1.0.1 */
#define SSL_OP_NO_TLSv1_2 0
#endif
#ifndef SSL_OP_SINGLE_DH_USE /* needs OpenSSL >= 0.9.6 */
#define SSL_OP_SINGLE_DH_USE 0
#endif
#ifndef SSL_OP_SINGLE_ECDH_USE /* needs OpenSSL >= 1.0.0 */
#define SSL_OP_SINGLE_ECDH_USE 0
#endif
#ifndef SSL_MODE_RELEASE_BUFFERS /* needs OpenSSL >= 1.0.0 */
#define SSL_MODE_RELEASE_BUFFERS 0
#endif
#ifndef SSL_MODE_SMALL_BUFFERS /* needs small_records.patch */
#define SSL_MODE_SMALL_BUFFERS 0
#endif
int ssl_sock_prepare_ctx(struct bind_conf *bind_conf, SSL_CTX *ctx)
{
struct proxy *curproxy = bind_conf->frontend;
int cfgerr = 0;
int verify = SSL_VERIFY_NONE;
long ssloptions =
SSL_OP_ALL | /* all known workarounds for bugs */
SSL_OP_NO_SSLv2 |
SSL_OP_NO_COMPRESSION |
SSL_OP_SINGLE_DH_USE |
SSL_OP_SINGLE_ECDH_USE |
SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION |
SSL_OP_CIPHER_SERVER_PREFERENCE;
long sslmode =
SSL_MODE_ENABLE_PARTIAL_WRITE |
SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER |
SSL_MODE_RELEASE_BUFFERS |
SSL_MODE_SMALL_BUFFERS;
STACK_OF(SSL_CIPHER) * ciphers = NULL;
SSL_CIPHER * cipher = NULL;
char cipher_description[128];
/* The description of ciphers using an Ephemeral Diffie Hellman key exchange
contains " Kx=DH " or " Kx=DH(". Beware of " Kx=DH/",
which is not ephemeral DH. */
const char dhe_description[] = " Kx=DH ";
const char dhe_export_description[] = " Kx=DH(";
int idx = 0;
int dhe_found = 0;
SSL *ssl = NULL;
/* Make sure openssl opens /dev/urandom before the chroot */
if (!ssl_initialize_random()) {
Alert("OpenSSL random data generator initialization failed.\n");
cfgerr++;
}
if (bind_conf->ssl_options & BC_SSL_O_NO_SSLV3)
ssloptions |= SSL_OP_NO_SSLv3;
if (bind_conf->ssl_options & BC_SSL_O_NO_TLSV10)
ssloptions |= SSL_OP_NO_TLSv1;
if (bind_conf->ssl_options & BC_SSL_O_NO_TLSV11)
ssloptions |= SSL_OP_NO_TLSv1_1;
if (bind_conf->ssl_options & BC_SSL_O_NO_TLSV12)
ssloptions |= SSL_OP_NO_TLSv1_2;
if (bind_conf->ssl_options & BC_SSL_O_NO_TLS_TICKETS)
ssloptions |= SSL_OP_NO_TICKET;
if (bind_conf->ssl_options & BC_SSL_O_USE_SSLV3) {
#ifndef OPENSSL_NO_SSL3
SSL_CTX_set_ssl_version(ctx, SSLv3_server_method());
#else
Alert("SSLv3 support requested but unavailable.\n");
cfgerr++;
#endif
}
if (bind_conf->ssl_options & BC_SSL_O_USE_TLSV10)
SSL_CTX_set_ssl_version(ctx, TLSv1_server_method());
#if SSL_OP_NO_TLSv1_1
if (bind_conf->ssl_options & BC_SSL_O_USE_TLSV11)
SSL_CTX_set_ssl_version(ctx, TLSv1_1_server_method());
#endif
#if SSL_OP_NO_TLSv1_2
if (bind_conf->ssl_options & BC_SSL_O_USE_TLSV12)
SSL_CTX_set_ssl_version(ctx, TLSv1_2_server_method());
#endif
SSL_CTX_set_options(ctx, ssloptions);
SSL_CTX_set_mode(ctx, sslmode);
switch (bind_conf->verify) {
case SSL_SOCK_VERIFY_NONE:
verify = SSL_VERIFY_NONE;
break;
case SSL_SOCK_VERIFY_OPTIONAL:
verify = SSL_VERIFY_PEER;
break;
case SSL_SOCK_VERIFY_REQUIRED:
verify = SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
break;
}
SSL_CTX_set_verify(ctx, verify, ssl_sock_bind_verifycbk);
if (verify & SSL_VERIFY_PEER) {
if (bind_conf->ca_file) {
/* load CAfile to verify */
if (!SSL_CTX_load_verify_locations(ctx, bind_conf->ca_file, NULL)) {
Alert("Proxy '%s': unable to load CA file '%s' for bind '%s' at [%s:%d].\n",
curproxy->id, bind_conf->ca_file, bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
/* set CA names fo client cert request, function returns void */
SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(bind_conf->ca_file));
}
else {
Alert("Proxy '%s': verify is enabled but no CA file specified for bind '%s' at [%s:%d].\n",
curproxy->id, bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
#ifdef X509_V_FLAG_CRL_CHECK
if (bind_conf->crl_file) {
X509_STORE *store = SSL_CTX_get_cert_store(ctx);
if (!store || !X509_STORE_load_locations(store, bind_conf->crl_file, NULL)) {
Alert("Proxy '%s': unable to configure CRL file '%s' for bind '%s' at [%s:%d].\n",
curproxy->id, bind_conf->crl_file, bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
else {
X509_STORE_set_flags(store, X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
}
}
#endif
ERR_clear_error();
}
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
if(bind_conf->keys_ref) {
if (!SSL_CTX_set_tlsext_ticket_key_cb(ctx, ssl_tlsext_ticket_key_cb)) {
Alert("Proxy '%s': unable to set callback for TLS ticket validation for bind '%s' at [%s:%d].\n",
curproxy->id, bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
}
#endif
if (global_ssl.life_time)
SSL_CTX_set_timeout(ctx, global_ssl.life_time);
shared_context_set_cache(ctx);
if (bind_conf->ciphers &&
!SSL_CTX_set_cipher_list(ctx, bind_conf->ciphers)) {
Alert("Proxy '%s': unable to set SSL cipher list to '%s' for bind '%s' at [%s:%d].\n",
curproxy->id, bind_conf->ciphers, bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
/* If tune.ssl.default-dh-param has not been set,
neither has ssl-default-dh-file and no static DH
params were in the certificate file. */
if (global_ssl.default_dh_param == 0 &&
global_dh == NULL &&
(ssl_dh_ptr_index == -1 ||
SSL_CTX_get_ex_data(ctx, ssl_dh_ptr_index) == NULL)) {
ssl = SSL_new(ctx);
if (ssl) {
ciphers = SSL_get_ciphers(ssl);
if (ciphers) {
for (idx = 0; idx < sk_SSL_CIPHER_num(ciphers); idx++) {
cipher = sk_SSL_CIPHER_value(ciphers, idx);
if (SSL_CIPHER_description(cipher, cipher_description, sizeof (cipher_description)) == cipher_description) {
if (strstr(cipher_description, dhe_description) != NULL ||
strstr(cipher_description, dhe_export_description) != NULL) {
dhe_found = 1;
break;
}
}
}
}
SSL_free(ssl);
ssl = NULL;
}
if (dhe_found) {
Warning("Setting tune.ssl.default-dh-param to 1024 by default, if your workload permits it you should set it to at least 2048. Please set a value >= 1024 to make this warning disappear.\n");
}
global_ssl.default_dh_param = 1024;
}
#ifndef OPENSSL_NO_DH
if (global_ssl.default_dh_param >= 1024) {
if (local_dh_1024 == NULL) {
local_dh_1024 = ssl_get_dh_1024();
}
if (global_ssl.default_dh_param >= 2048) {
if (local_dh_2048 == NULL) {
local_dh_2048 = ssl_get_dh_2048();
}
if (global_ssl.default_dh_param >= 4096) {
if (local_dh_4096 == NULL) {
local_dh_4096 = ssl_get_dh_4096();
}
}
}
}
#endif /* OPENSSL_NO_DH */
SSL_CTX_set_info_callback(ctx, ssl_sock_infocbk);
#if OPENSSL_VERSION_NUMBER >= 0x00907000L
SSL_CTX_set_msg_callback(ctx, ssl_sock_msgcbk);
#endif
#ifdef OPENSSL_NPN_NEGOTIATED
if (bind_conf->npn_str)
SSL_CTX_set_next_protos_advertised_cb(ctx, ssl_sock_advertise_npn_protos, bind_conf);
#endif
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
if (bind_conf->alpn_str)
SSL_CTX_set_alpn_select_cb(ctx, ssl_sock_advertise_alpn_protos, bind_conf);
#endif
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
SSL_CTX_set_tlsext_servername_callback(ctx, ssl_sock_switchctx_cbk);
SSL_CTX_set_tlsext_servername_arg(ctx, bind_conf);
#endif
#if defined(SSL_CTX_set_tmp_ecdh) && !defined(OPENSSL_NO_ECDH)
{
int i;
EC_KEY *ecdh;
i = OBJ_sn2nid(bind_conf->ecdhe ? bind_conf->ecdhe : ECDHE_DEFAULT_CURVE);
if (!i || ((ecdh = EC_KEY_new_by_curve_name(i)) == NULL)) {
Alert("Proxy '%s': unable to set elliptic named curve to '%s' for bind '%s' at [%s:%d].\n",
curproxy->id, bind_conf->ecdhe ? bind_conf->ecdhe : ECDHE_DEFAULT_CURVE,
bind_conf->arg, bind_conf->file, bind_conf->line);
cfgerr++;
}
else {
SSL_CTX_set_tmp_ecdh(ctx, ecdh);
EC_KEY_free(ecdh);
}
}
#endif
return cfgerr;
}
static int ssl_sock_srv_hostcheck(const char *pattern, const char *hostname)
{
const char *pattern_wildcard, *pattern_left_label_end, *hostname_left_label_end;
size_t prefixlen, suffixlen;
/* Trivial case */
if (strcmp(pattern, hostname) == 0)
return 1;
/* The rest of this logic is based on RFC 6125, section 6.4.3
* (http://tools.ietf.org/html/rfc6125#section-6.4.3) */
pattern_wildcard = NULL;
pattern_left_label_end = pattern;
while (*pattern_left_label_end != '.') {
switch (*pattern_left_label_end) {
case 0:
/* End of label not found */
return 0;
case '*':
/* If there is more than one wildcards */
if (pattern_wildcard)
return 0;
pattern_wildcard = pattern_left_label_end;
break;
}
pattern_left_label_end++;
}
/* If it's not trivial and there is no wildcard, it can't
* match */
if (!pattern_wildcard)
return 0;
/* Make sure all labels match except the leftmost */
hostname_left_label_end = strchr(hostname, '.');
if (!hostname_left_label_end
|| strcmp(pattern_left_label_end, hostname_left_label_end) != 0)
return 0;
/* Make sure the leftmost label of the hostname is long enough
* that the wildcard can match */
if (hostname_left_label_end - hostname < (pattern_left_label_end - pattern) - 1)
return 0;
/* Finally compare the string on either side of the
* wildcard */
prefixlen = pattern_wildcard - pattern;
suffixlen = pattern_left_label_end - (pattern_wildcard + 1);
if ((prefixlen && (memcmp(pattern, hostname, prefixlen) != 0))
|| (suffixlen && (memcmp(pattern_wildcard + 1, hostname_left_label_end - suffixlen, suffixlen) != 0)))
return 0;
return 1;
}
static int ssl_sock_srv_verifycbk(int ok, X509_STORE_CTX *ctx)
{
SSL *ssl;
struct connection *conn;
char *servername;
int depth;
X509 *cert;
STACK_OF(GENERAL_NAME) *alt_names;
int i;
X509_NAME *cert_subject;
char *str;
if (ok == 0)
return ok;
ssl = X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
conn = SSL_get_app_data(ssl);
servername = objt_server(conn->target)->ssl_ctx.verify_host;
/* We only need to verify the CN on the actual server cert,
* not the indirect CAs */
depth = X509_STORE_CTX_get_error_depth(ctx);
if (depth != 0)
return ok;
/* At this point, the cert is *not* OK unless we can find a
* hostname match */
ok = 0;
cert = X509_STORE_CTX_get_current_cert(ctx);
/* It seems like this might happen if verify peer isn't set */
if (!cert)
return ok;
alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
if (alt_names) {
for (i = 0; !ok && i < sk_GENERAL_NAME_num(alt_names); i++) {
GENERAL_NAME *name = sk_GENERAL_NAME_value(alt_names, i);
if (name->type == GEN_DNS) {
#if OPENSSL_VERSION_NUMBER < 0x00907000L
if (ASN1_STRING_to_UTF8((unsigned char **)&str, name->d.ia5) >= 0) {
#else
if (ASN1_STRING_to_UTF8((unsigned char **)&str, name->d.dNSName) >= 0) {
#endif
ok = ssl_sock_srv_hostcheck(str, servername);
OPENSSL_free(str);
}
}
}
sk_GENERAL_NAME_pop_free(alt_names, GENERAL_NAME_free);
}
cert_subject = X509_get_subject_name(cert);
i = -1;
while (!ok && (i = X509_NAME_get_index_by_NID(cert_subject, NID_commonName, i)) != -1) {
X509_NAME_ENTRY *entry = X509_NAME_get_entry(cert_subject, i);
ASN1_STRING *value;
value = X509_NAME_ENTRY_get_data(entry);
if (ASN1_STRING_to_UTF8((unsigned char **)&str, value) >= 0) {
ok = ssl_sock_srv_hostcheck(str, servername);
OPENSSL_free(str);
}
}
return ok;
}
/* prepare ssl context from servers options. Returns an error count */
int ssl_sock_prepare_srv_ctx(struct server *srv)
{
struct proxy *curproxy = srv->proxy;
int cfgerr = 0;
long options =
SSL_OP_ALL | /* all known workarounds for bugs */
SSL_OP_NO_SSLv2 |
SSL_OP_NO_COMPRESSION;
long mode =
SSL_MODE_ENABLE_PARTIAL_WRITE |
SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER |
SSL_MODE_RELEASE_BUFFERS |
SSL_MODE_SMALL_BUFFERS;
int verify = SSL_VERIFY_NONE;
/* Make sure openssl opens /dev/urandom before the chroot */
if (!ssl_initialize_random()) {
Alert("OpenSSL random data generator initialization failed.\n");
cfgerr++;
}
/* Automatic memory computations need to know we use SSL there */
global.ssl_used_backend = 1;
/* Initiate SSL context for current server */
srv->ssl_ctx.reused_sess = NULL;
if (srv->use_ssl)
srv->xprt = &ssl_sock;
if (srv->check.use_ssl)
srv->check.xprt = &ssl_sock;
srv->ssl_ctx.ctx = SSL_CTX_new(SSLv23_client_method());
if (!srv->ssl_ctx.ctx) {
Alert("config : %s '%s', server '%s': unable to allocate ssl context.\n",
proxy_type_str(curproxy), curproxy->id,
srv->id);
cfgerr++;
return cfgerr;
}
if (srv->ssl_ctx.client_crt) {
if (SSL_CTX_use_PrivateKey_file(srv->ssl_ctx.ctx, srv->ssl_ctx.client_crt, SSL_FILETYPE_PEM) <= 0) {
Alert("config : %s '%s', server '%s': unable to load SSL private key from PEM file '%s'.\n",
proxy_type_str(curproxy), curproxy->id,
srv->id, srv->ssl_ctx.client_crt);
cfgerr++;
}
else if (SSL_CTX_use_certificate_chain_file(srv->ssl_ctx.ctx, srv->ssl_ctx.client_crt) <= 0) {
Alert("config : %s '%s', server '%s': unable to load ssl certificate from PEM file '%s'.\n",
proxy_type_str(curproxy), curproxy->id,
srv->id, srv->ssl_ctx.client_crt);
cfgerr++;
}
else if (SSL_CTX_check_private_key(srv->ssl_ctx.ctx) <= 0) {
Alert("config : %s '%s', server '%s': inconsistencies between private key and certificate loaded from PEM file '%s'.\n",
proxy_type_str(curproxy), curproxy->id,
srv->id, srv->ssl_ctx.client_crt);
cfgerr++;
}
}
if (srv->ssl_ctx.options & SRV_SSL_O_NO_SSLV3)
options |= SSL_OP_NO_SSLv3;
if (srv->ssl_ctx.options & SRV_SSL_O_NO_TLSV10)
options |= SSL_OP_NO_TLSv1;
if (srv->ssl_ctx.options & SRV_SSL_O_NO_TLSV11)
options |= SSL_OP_NO_TLSv1_1;
if (srv->ssl_ctx.options & SRV_SSL_O_NO_TLSV12)
options |= SSL_OP_NO_TLSv1_2;
if (srv->ssl_ctx.options & SRV_SSL_O_NO_TLS_TICKETS)
options |= SSL_OP_NO_TICKET;
if (srv->ssl_ctx.options & SRV_SSL_O_USE_SSLV3) {
#ifndef OPENSSL_NO_SSL3
SSL_CTX_set_ssl_version(srv->ssl_ctx.ctx, SSLv3_client_method());
#else
Alert("SSLv3 support requested but unavailable.\n");
cfgerr++;
#endif
}
if (srv->ssl_ctx.options & SRV_SSL_O_USE_TLSV10)
SSL_CTX_set_ssl_version(srv->ssl_ctx.ctx, TLSv1_client_method());
#if SSL_OP_NO_TLSv1_1
if (srv->ssl_ctx.options & SRV_SSL_O_USE_TLSV11)
SSL_CTX_set_ssl_version(srv->ssl_ctx.ctx, TLSv1_1_client_method());
#endif
#if SSL_OP_NO_TLSv1_2
if (srv->ssl_ctx.options & SRV_SSL_O_USE_TLSV12)
SSL_CTX_set_ssl_version(srv->ssl_ctx.ctx, TLSv1_2_client_method());
#endif
SSL_CTX_set_options(srv->ssl_ctx.ctx, options);
SSL_CTX_set_mode(srv->ssl_ctx.ctx, mode);
if (global.ssl_server_verify == SSL_SERVER_VERIFY_REQUIRED)
verify = SSL_VERIFY_PEER;
switch (srv->ssl_ctx.verify) {
case SSL_SOCK_VERIFY_NONE:
verify = SSL_VERIFY_NONE;
break;
case SSL_SOCK_VERIFY_REQUIRED:
verify = SSL_VERIFY_PEER;
break;
}
SSL_CTX_set_verify(srv->ssl_ctx.ctx,
verify,
srv->ssl_ctx.verify_host ? ssl_sock_srv_verifycbk : NULL);
if (verify & SSL_VERIFY_PEER) {
if (srv->ssl_ctx.ca_file) {
/* load CAfile to verify */
if (!SSL_CTX_load_verify_locations(srv->ssl_ctx.ctx, srv->ssl_ctx.ca_file, NULL)) {
Alert("Proxy '%s', server '%s' [%s:%d] unable to load CA file '%s'.\n",
curproxy->id, srv->id,
srv->conf.file, srv->conf.line, srv->ssl_ctx.ca_file);
cfgerr++;
}
}
else {
if (global.ssl_server_verify == SSL_SERVER_VERIFY_REQUIRED)
Alert("Proxy '%s', server '%s' [%s:%d] verify is enabled by default but no CA file specified. If you're running on a LAN where you're certain to trust the server's certificate, please set an explicit 'verify none' statement on the 'server' line, or use 'ssl-server-verify none' in the global section to disable server-side verifications by default.\n",
curproxy->id, srv->id,
srv->conf.file, srv->conf.line);
else
Alert("Proxy '%s', server '%s' [%s:%d] verify is enabled but no CA file specified.\n",
curproxy->id, srv->id,
srv->conf.file, srv->conf.line);
cfgerr++;
}
#ifdef X509_V_FLAG_CRL_CHECK
if (srv->ssl_ctx.crl_file) {
X509_STORE *store = SSL_CTX_get_cert_store(srv->ssl_ctx.ctx);
if (!store || !X509_STORE_load_locations(store, srv->ssl_ctx.crl_file, NULL)) {
Alert("Proxy '%s', server '%s' [%s:%d] unable to configure CRL file '%s'.\n",
curproxy->id, srv->id,
srv->conf.file, srv->conf.line, srv->ssl_ctx.crl_file);
cfgerr++;
}
else {
X509_STORE_set_flags(store, X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
}
}
#endif
}
if (global_ssl.life_time)
SSL_CTX_set_timeout(srv->ssl_ctx.ctx, global_ssl.life_time);
SSL_CTX_set_session_cache_mode(srv->ssl_ctx.ctx, SSL_SESS_CACHE_OFF);
if (srv->ssl_ctx.ciphers &&
!SSL_CTX_set_cipher_list(srv->ssl_ctx.ctx, srv->ssl_ctx.ciphers)) {
Alert("Proxy '%s', server '%s' [%s:%d] : unable to set SSL cipher list to '%s'.\n",
curproxy->id, srv->id,
srv->conf.file, srv->conf.line, srv->ssl_ctx.ciphers);
cfgerr++;
}
return cfgerr;
}
/* Walks down the two trees in bind_conf and prepares all certs. The pointer may
* be NULL, in which case nothing is done. Returns the number of errors
* encountered.
*/
int ssl_sock_prepare_all_ctx(struct bind_conf *bind_conf)
{
struct ebmb_node *node;
struct sni_ctx *sni;
int err = 0;
if (!bind_conf || !bind_conf->is_ssl)
return 0;
/* Automatic memory computations need to know we use SSL there */
global.ssl_used_frontend = 1;
if (bind_conf->default_ctx)
err += ssl_sock_prepare_ctx(bind_conf, bind_conf->default_ctx);
node = ebmb_first(&bind_conf->sni_ctx);
while (node) {
sni = ebmb_entry(node, struct sni_ctx, name);
if (!sni->order && sni->ctx != bind_conf->default_ctx)
/* only initialize the CTX on its first occurrence and
if it is not the default_ctx */
err += ssl_sock_prepare_ctx(bind_conf, sni->ctx);
node = ebmb_next(node);
}
node = ebmb_first(&bind_conf->sni_w_ctx);
while (node) {
sni = ebmb_entry(node, struct sni_ctx, name);
if (!sni->order && sni->ctx != bind_conf->default_ctx)
/* only initialize the CTX on its first occurrence and
if it is not the default_ctx */
err += ssl_sock_prepare_ctx(bind_conf, sni->ctx);
node = ebmb_next(node);
}
return err;
}
/* Prepares all the contexts for a bind_conf and allocates the shared SSL
* context if needed. Returns < 0 on error, 0 on success. The warnings and
* alerts are directly emitted since the rest of the stack does it below.
*/
int ssl_sock_prepare_bind_conf(struct bind_conf *bind_conf)
{
struct proxy *px = bind_conf->frontend;
int alloc_ctx;
int err;
if (!bind_conf->is_ssl) {
if (bind_conf->default_ctx) {
Warning("Proxy '%s': A certificate was specified but SSL was not enabled on bind '%s' at [%s:%d] (use 'ssl').\n",
px->id, bind_conf->arg, bind_conf->file, bind_conf->line);
}
return 0;
}
if (!bind_conf->default_ctx) {
Alert("Proxy '%s': no SSL certificate specified for bind '%s' at [%s:%d] (use 'crt').\n",
px->id, bind_conf->arg, bind_conf->file, bind_conf->line);
return -1;
}
alloc_ctx = shared_context_init(global.tune.sslcachesize, (!global_ssl.private_cache && (global.nbproc > 1)) ? 1 : 0);
if (alloc_ctx < 0) {
if (alloc_ctx == SHCTX_E_INIT_LOCK)
Alert("Unable to initialize the lock for the shared SSL session cache. You can retry using the global statement 'tune.ssl.force-private-cache' but it could increase CPU usage due to renegotiations if nbproc > 1.\n");
else
Alert("Unable to allocate SSL session cache.\n");
return -1;
}
err = 0;
/* initialize all certificate contexts */
err += ssl_sock_prepare_all_ctx(bind_conf);
/* initialize CA variables if the certificates generation is enabled */
err += ssl_sock_load_ca(bind_conf);
return -err;
}
/* release ssl context allocated for servers. */
void ssl_sock_free_srv_ctx(struct server *srv)
{
if (srv->ssl_ctx.ctx)
SSL_CTX_free(srv->ssl_ctx.ctx);
}
/* Walks down the two trees in bind_conf and frees all the certs. The pointer may
* be NULL, in which case nothing is done. The default_ctx is nullified too.
*/
void ssl_sock_free_all_ctx(struct bind_conf *bind_conf)
{
struct ebmb_node *node, *back;
struct sni_ctx *sni;
if (!bind_conf || !bind_conf->is_ssl)
return;
node = ebmb_first(&bind_conf->sni_ctx);
while (node) {
sni = ebmb_entry(node, struct sni_ctx, name);
back = ebmb_next(node);
ebmb_delete(node);
if (!sni->order) /* only free the CTX on its first occurrence */
SSL_CTX_free(sni->ctx);
free(sni);
node = back;
}
node = ebmb_first(&bind_conf->sni_w_ctx);
while (node) {
sni = ebmb_entry(node, struct sni_ctx, name);
back = ebmb_next(node);
ebmb_delete(node);
if (!sni->order) /* only free the CTX on its first occurrence */
SSL_CTX_free(sni->ctx);
free(sni);
node = back;
}
bind_conf->default_ctx = NULL;
}
/* Destroys all the contexts for a bind_conf. This is used during deinit(). */
void ssl_sock_destroy_bind_conf(struct bind_conf *bind_conf)
{
ssl_sock_free_ca(bind_conf);
ssl_sock_free_all_ctx(bind_conf);
free(bind_conf->ca_file);
free(bind_conf->ca_sign_file);
free(bind_conf->ca_sign_pass);
free(bind_conf->ciphers);
free(bind_conf->ecdhe);
free(bind_conf->crl_file);
if (bind_conf->keys_ref) {
free(bind_conf->keys_ref->filename);
free(bind_conf->keys_ref->tlskeys);
LIST_DEL(&bind_conf->keys_ref->list);
free(bind_conf->keys_ref);
}
bind_conf->keys_ref = NULL;
bind_conf->crl_file = NULL;
bind_conf->ecdhe = NULL;
bind_conf->ciphers = NULL;
bind_conf->ca_sign_pass = NULL;
bind_conf->ca_sign_file = NULL;
bind_conf->ca_file = NULL;
}
/* Load CA cert file and private key used to generate certificates */
int
ssl_sock_load_ca(struct bind_conf *bind_conf)
{
struct proxy *px = bind_conf->frontend;
FILE *fp;
X509 *cacert = NULL;
EVP_PKEY *capkey = NULL;
int err = 0;
if (!bind_conf || !bind_conf->generate_certs)
return err;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
if (global_ssl.ctx_cache)
ssl_ctx_lru_tree = lru64_new(global_ssl.ctx_cache);
ssl_ctx_lru_seed = (unsigned int)time(NULL);
#endif
if (!bind_conf->ca_sign_file) {
Alert("Proxy '%s': cannot enable certificate generation, "
"no CA certificate File configured at [%s:%d].\n",
px->id, bind_conf->file, bind_conf->line);
goto load_error;
}
/* read in the CA certificate */
if (!(fp = fopen(bind_conf->ca_sign_file, "r"))) {
Alert("Proxy '%s': Failed to read CA certificate file '%s' at [%s:%d].\n",
px->id, bind_conf->ca_sign_file, bind_conf->file, bind_conf->line);
goto load_error;
}
if (!(cacert = PEM_read_X509(fp, NULL, NULL, NULL))) {
Alert("Proxy '%s': Failed to read CA certificate file '%s' at [%s:%d].\n",
px->id, bind_conf->ca_sign_file, bind_conf->file, bind_conf->line);
goto read_error;
}
rewind(fp);
if (!(capkey = PEM_read_PrivateKey(fp, NULL, NULL, bind_conf->ca_sign_pass))) {
Alert("Proxy '%s': Failed to read CA private key file '%s' at [%s:%d].\n",
px->id, bind_conf->ca_sign_file, bind_conf->file, bind_conf->line);
goto read_error;
}
fclose (fp);
bind_conf->ca_sign_cert = cacert;
bind_conf->ca_sign_pkey = capkey;
return err;
read_error:
fclose (fp);
if (capkey) EVP_PKEY_free(capkey);
if (cacert) X509_free(cacert);
load_error:
bind_conf->generate_certs = 0;
err++;
return err;
}
/* Release CA cert and private key used to generate certificated */
void
ssl_sock_free_ca(struct bind_conf *bind_conf)
{
if (!bind_conf)
return;
if (bind_conf->ca_sign_pkey)
EVP_PKEY_free(bind_conf->ca_sign_pkey);
if (bind_conf->ca_sign_cert)
X509_free(bind_conf->ca_sign_cert);
bind_conf->ca_sign_pkey = NULL;
bind_conf->ca_sign_cert = NULL;
}
/*
* This function is called if SSL * context is not yet allocated. The function
* is designed to be called before any other data-layer operation and sets the
* handshake flag on the connection. It is safe to call it multiple times.
* It returns 0 on success and -1 in error case.
*/
static int ssl_sock_init(struct connection *conn)
{
/* already initialized */
if (conn->xprt_ctx)
return 0;
if (!conn_ctrl_ready(conn))
return 0;
if (global.maxsslconn && sslconns >= global.maxsslconn) {
conn->err_code = CO_ER_SSL_TOO_MANY;
return -1;
}
/* If it is in client mode initiate SSL session
in connect state otherwise accept state */
if (objt_server(conn->target)) {
int may_retry = 1;
retry_connect:
/* Alloc a new SSL session ctx */
conn->xprt_ctx = SSL_new(objt_server(conn->target)->ssl_ctx.ctx);
if (!conn->xprt_ctx) {
if (may_retry--) {
pool_gc2();
goto retry_connect;
}
conn->err_code = CO_ER_SSL_NO_MEM;
return -1;
}
/* set fd on SSL session context */
if (!SSL_set_fd(conn->xprt_ctx, conn->t.sock.fd)) {
SSL_free(conn->xprt_ctx);
conn->xprt_ctx = NULL;
if (may_retry--) {
pool_gc2();
goto retry_connect;
}
conn->err_code = CO_ER_SSL_NO_MEM;
return -1;
}
/* set connection pointer */
if (!SSL_set_app_data(conn->xprt_ctx, conn)) {
SSL_free(conn->xprt_ctx);
conn->xprt_ctx = NULL;
if (may_retry--) {
pool_gc2();
goto retry_connect;
}
conn->err_code = CO_ER_SSL_NO_MEM;
return -1;
}
SSL_set_connect_state(conn->xprt_ctx);
if (objt_server(conn->target)->ssl_ctx.reused_sess) {
if(!SSL_set_session(conn->xprt_ctx, objt_server(conn->target)->ssl_ctx.reused_sess)) {
SSL_SESSION_free(objt_server(conn->target)->ssl_ctx.reused_sess);
objt_server(conn->target)->ssl_ctx.reused_sess = NULL;
}
}
/* leave init state and start handshake */
conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN;
sslconns++;
totalsslconns++;
return 0;
}
else if (objt_listener(conn->target)) {
int may_retry = 1;
retry_accept:
/* Alloc a new SSL session ctx */
conn->xprt_ctx = SSL_new(objt_listener(conn->target)->bind_conf->default_ctx);
if (!conn->xprt_ctx) {
if (may_retry--) {
pool_gc2();
goto retry_accept;
}
conn->err_code = CO_ER_SSL_NO_MEM;
return -1;
}
/* set fd on SSL session context */
if (!SSL_set_fd(conn->xprt_ctx, conn->t.sock.fd)) {
SSL_free(conn->xprt_ctx);
conn->xprt_ctx = NULL;
if (may_retry--) {
pool_gc2();
goto retry_accept;
}
conn->err_code = CO_ER_SSL_NO_MEM;
return -1;
}
/* set connection pointer */
if (!SSL_set_app_data(conn->xprt_ctx, conn)) {
SSL_free(conn->xprt_ctx);
conn->xprt_ctx = NULL;
if (may_retry--) {
pool_gc2();
goto retry_accept;
}
conn->err_code = CO_ER_SSL_NO_MEM;
return -1;
}
SSL_set_accept_state(conn->xprt_ctx);
/* leave init state and start handshake */
conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN;
sslconns++;
totalsslconns++;
return 0;
}
/* don't know how to handle such a target */
conn->err_code = CO_ER_SSL_NO_TARGET;
return -1;
}
/* This is the callback which is used when an SSL handshake is pending. It
* updates the FD status if it wants some polling before being called again.
* It returns 0 if it fails in a fatal way or needs to poll to go further,
* otherwise it returns non-zero and removes itself from the connection's
* flags (the bit is provided in <flag> by the caller).
*/
int ssl_sock_handshake(struct connection *conn, unsigned int flag)
{
int ret;
if (!conn_ctrl_ready(conn))
return 0;
if (!conn->xprt_ctx)
goto out_error;
/* If we use SSL_do_handshake to process a reneg initiated by
* the remote peer, it sometimes returns SSL_ERROR_SSL.
* Usually SSL_write and SSL_read are used and process implicitly
* the reneg handshake.
* Here we use SSL_peek as a workaround for reneg.
*/
if ((conn->flags & CO_FL_CONNECTED) && SSL_renegotiate_pending(conn->xprt_ctx)) {
char c;
ret = SSL_peek(conn->xprt_ctx, &c, 1);
if (ret <= 0) {
/* handshake may have not been completed, let's find why */
ret = SSL_get_error(conn->xprt_ctx, ret);
if (ret == SSL_ERROR_WANT_WRITE) {
/* SSL handshake needs to write, L4 connection may not be ready */
__conn_sock_stop_recv(conn);
__conn_sock_want_send(conn);
fd_cant_send(conn->t.sock.fd);
return 0;
}
else if (ret == SSL_ERROR_WANT_READ) {
/* handshake may have been completed but we have
* no more data to read.
*/
if (!SSL_renegotiate_pending(conn->xprt_ctx)) {
ret = 1;
goto reneg_ok;
}
/* SSL handshake needs to read, L4 connection is ready */
if (conn->flags & CO_FL_WAIT_L4_CONN)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
__conn_sock_stop_send(conn);
__conn_sock_want_recv(conn);
fd_cant_recv(conn->t.sock.fd);
return 0;
}
else if (ret == SSL_ERROR_SYSCALL) {
/* if errno is null, then connection was successfully established */
if (!errno && conn->flags & CO_FL_WAIT_L4_CONN)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
if (!conn->err_code) {
int empty_handshake;
#if (OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(LIBRESSL_VERSION_NUMBER)
OSSL_HANDSHAKE_STATE state = SSL_get_state((SSL *)conn->xprt_ctx);
empty_handshake = state == TLS_ST_BEFORE;
#else
empty_handshake = !((SSL *)conn->xprt_ctx)->packet_length;
#endif
if (empty_handshake) {
if (!errno) {
if (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT)
conn->err_code = CO_ER_SSL_HANDSHAKE_HB;
else
conn->err_code = CO_ER_SSL_EMPTY;
}
else {
if (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT)
conn->err_code = CO_ER_SSL_HANDSHAKE_HB;
else
conn->err_code = CO_ER_SSL_ABORT;
}
}
else {
if (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT)
conn->err_code = CO_ER_SSL_HANDSHAKE_HB;
else
conn->err_code = CO_ER_SSL_HANDSHAKE;
}
}
goto out_error;
}
else {
/* Fail on all other handshake errors */
/* Note: OpenSSL may leave unread bytes in the socket's
* buffer, causing an RST to be emitted upon close() on
* TCP sockets. We first try to drain possibly pending
* data to avoid this as much as possible.
*/
conn_sock_drain(conn);
if (!conn->err_code)
conn->err_code = (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT) ?
CO_ER_SSL_KILLED_HB : CO_ER_SSL_HANDSHAKE;
goto out_error;
}
}
/* read some data: consider handshake completed */
goto reneg_ok;
}
ret = SSL_do_handshake(conn->xprt_ctx);
if (ret != 1) {
/* handshake did not complete, let's find why */
ret = SSL_get_error(conn->xprt_ctx, ret);
if (ret == SSL_ERROR_WANT_WRITE) {
/* SSL handshake needs to write, L4 connection may not be ready */
__conn_sock_stop_recv(conn);
__conn_sock_want_send(conn);
fd_cant_send(conn->t.sock.fd);
return 0;
}
else if (ret == SSL_ERROR_WANT_READ) {
/* SSL handshake needs to read, L4 connection is ready */
if (conn->flags & CO_FL_WAIT_L4_CONN)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
__conn_sock_stop_send(conn);
__conn_sock_want_recv(conn);
fd_cant_recv(conn->t.sock.fd);
return 0;
}
else if (ret == SSL_ERROR_SYSCALL) {
#if (OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(LIBRESSL_VERSION_NUMBER)
OSSL_HANDSHAKE_STATE state;
#endif
int empty_handshake;
/* if errno is null, then connection was successfully established */
if (!errno && conn->flags & CO_FL_WAIT_L4_CONN)
conn->flags &= ~CO_FL_WAIT_L4_CONN;
#if (OPENSSL_VERSION_NUMBER >= 0x1010000fL) && !defined(LIBRESSL_VERSION_NUMBER)
state = SSL_get_state((SSL *)conn->xprt_ctx);
empty_handshake = state == TLS_ST_BEFORE;
#else
empty_handshake = !((SSL *)conn->xprt_ctx)->packet_length;
#endif
if (empty_handshake) {
if (!errno) {
if (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT)
conn->err_code = CO_ER_SSL_HANDSHAKE_HB;
else
conn->err_code = CO_ER_SSL_EMPTY;
}
else {
if (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT)
conn->err_code = CO_ER_SSL_HANDSHAKE_HB;
else
conn->err_code = CO_ER_SSL_ABORT;
}
}
else {
if (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT)
conn->err_code = CO_ER_SSL_HANDSHAKE_HB;
else
conn->err_code = CO_ER_SSL_HANDSHAKE;
}
goto out_error;
}
else {
/* Fail on all other handshake errors */
/* Note: OpenSSL may leave unread bytes in the socket's
* buffer, causing an RST to be emitted upon close() on
* TCP sockets. We first try to drain possibly pending
* data to avoid this as much as possible.
*/
conn_sock_drain(conn);
if (!conn->err_code)
conn->err_code = (conn->xprt_st & SSL_SOCK_RECV_HEARTBEAT) ?
CO_ER_SSL_KILLED_HB : CO_ER_SSL_HANDSHAKE;
goto out_error;
}
}
reneg_ok:
/* Handshake succeeded */
if (!SSL_session_reused(conn->xprt_ctx)) {
if (objt_server(conn->target)) {
update_freq_ctr(&global.ssl_be_keys_per_sec, 1);
if (global.ssl_be_keys_per_sec.curr_ctr > global.ssl_be_keys_max)
global.ssl_be_keys_max = global.ssl_be_keys_per_sec.curr_ctr;
/* check if session was reused, if not store current session on server for reuse */
if (objt_server(conn->target)->ssl_ctx.reused_sess) {
SSL_SESSION_free(objt_server(conn->target)->ssl_ctx.reused_sess);
objt_server(conn->target)->ssl_ctx.reused_sess = NULL;
}
if (!(objt_server(conn->target)->ssl_ctx.options & SRV_SSL_O_NO_REUSE))
objt_server(conn->target)->ssl_ctx.reused_sess = SSL_get1_session(conn->xprt_ctx);
}
else {
update_freq_ctr(&global.ssl_fe_keys_per_sec, 1);
if (global.ssl_fe_keys_per_sec.curr_ctr > global.ssl_fe_keys_max)
global.ssl_fe_keys_max = global.ssl_fe_keys_per_sec.curr_ctr;
}
}
/* The connection is now established at both layers, it's time to leave */
conn->flags &= ~(flag | CO_FL_WAIT_L4_CONN | CO_FL_WAIT_L6_CONN);
return 1;
out_error:
/* Clear openssl global errors stack */
ssl_sock_dump_errors(conn);
ERR_clear_error();
/* free resumed session if exists */
if (objt_server(conn->target) && objt_server(conn->target)->ssl_ctx.reused_sess) {
SSL_SESSION_free(objt_server(conn->target)->ssl_ctx.reused_sess);
objt_server(conn->target)->ssl_ctx.reused_sess = NULL;
}
/* Fail on all other handshake errors */
conn->flags |= CO_FL_ERROR;
if (!conn->err_code)
conn->err_code = CO_ER_SSL_HANDSHAKE;
return 0;
}
/* Receive up to <count> bytes from connection <conn>'s socket and store them
* into buffer <buf>. Only one call to recv() is performed, unless the
* buffer wraps, in which case a second call may be performed. The connection's
* flags are updated with whatever special event is detected (error, read0,
* empty). The caller is responsible for taking care of those events and
* avoiding the call if inappropriate. The function does not call the
* connection's polling update function, so the caller is responsible for this.
*/
static int ssl_sock_to_buf(struct connection *conn, struct buffer *buf, int count)
{
int ret, done = 0;
int try;
if (!conn->xprt_ctx)
goto out_error;
if (conn->flags & CO_FL_HANDSHAKE)
/* a handshake was requested */
return 0;
/* let's realign the buffer to optimize I/O */
if (buffer_empty(buf))
buf->p = buf->data;
/* read the largest possible block. For this, we perform only one call
* to recv() unless the buffer wraps and we exactly fill the first hunk,
* in which case we accept to do it once again. A new attempt is made on
* EINTR too.
*/
while (count > 0) {
/* first check if we have some room after p+i */
try = buf->data + buf->size - (buf->p + buf->i);
/* otherwise continue between data and p-o */
if (try <= 0) {
try = buf->p - (buf->data + buf->o);
if (try <= 0)
break;
}
if (try > count)
try = count;
ret = SSL_read(conn->xprt_ctx, bi_end(buf), try);
if (conn->flags & CO_FL_ERROR) {
/* CO_FL_ERROR may be set by ssl_sock_infocbk */
goto out_error;
}
if (ret > 0) {
buf->i += ret;
done += ret;
if (ret < try)
break;
count -= ret;
}
else if (ret == 0) {
ret = SSL_get_error(conn->xprt_ctx, ret);
if (ret != SSL_ERROR_ZERO_RETURN) {
/* error on protocol or underlying transport */
if ((ret != SSL_ERROR_SYSCALL)
|| (errno && (errno != EAGAIN)))
conn->flags |= CO_FL_ERROR;
/* Clear openssl global errors stack */
ssl_sock_dump_errors(conn);
ERR_clear_error();
}
goto read0;
}
else {
ret = SSL_get_error(conn->xprt_ctx, ret);
if (ret == SSL_ERROR_WANT_WRITE) {
/* handshake is running, and it needs to enable write */
conn->flags |= CO_FL_SSL_WAIT_HS;
__conn_sock_want_send(conn);
break;
}
else if (ret == SSL_ERROR_WANT_READ) {
if (SSL_renegotiate_pending(conn->xprt_ctx)) {
/* handshake is running, and it may need to re-enable read */
conn->flags |= CO_FL_SSL_WAIT_HS;
__conn_sock_want_recv(conn);
break;
}
/* we need to poll for retry a read later */
fd_cant_recv(conn->t.sock.fd);
break;
}
/* otherwise it's a real error */
goto out_error;
}
}
return done;
read0:
conn_sock_read0(conn);
return done;
out_error:
/* Clear openssl global errors stack */
ssl_sock_dump_errors(conn);
ERR_clear_error();
conn->flags |= CO_FL_ERROR;
return done;
}
/* Send all pending bytes from buffer <buf> to connection <conn>'s socket.
* <flags> may contain some CO_SFL_* flags to hint the system about other
* pending data for example, but this flag is ignored at the moment.
* Only one call to send() is performed, unless the buffer wraps, in which case
* a second call may be performed. The connection's flags are updated with
* whatever special event is detected (error, empty). The caller is responsible
* for taking care of those events and avoiding the call if inappropriate. The
* function does not call the connection's polling update function, so the caller
* is responsible for this.
*/
static int ssl_sock_from_buf(struct connection *conn, struct buffer *buf, int flags)
{
int ret, try, done;
done = 0;
if (!conn->xprt_ctx)
goto out_error;
if (conn->flags & CO_FL_HANDSHAKE)
/* a handshake was requested */
return 0;
/* send the largest possible block. For this we perform only one call
* to send() unless the buffer wraps and we exactly fill the first hunk,
* in which case we accept to do it once again.
*/
while (buf->o) {
try = bo_contig_data(buf);
if (!(flags & CO_SFL_STREAMER) &&
!(conn->xprt_st & SSL_SOCK_SEND_UNLIMITED) &&
global_ssl.max_record && try > global_ssl.max_record) {
try = global_ssl.max_record;
}
else {
/* we need to keep the information about the fact that
* we're not limiting the upcoming send(), because if it
* fails, we'll have to retry with at least as many data.
*/
conn->xprt_st |= SSL_SOCK_SEND_UNLIMITED;
}
ret = SSL_write(conn->xprt_ctx, bo_ptr(buf), try);
if (conn->flags & CO_FL_ERROR) {
/* CO_FL_ERROR may be set by ssl_sock_infocbk */
goto out_error;
}
if (ret > 0) {
conn->xprt_st &= ~SSL_SOCK_SEND_UNLIMITED;
buf->o -= ret;
done += ret;
if (likely(buffer_empty(buf)))
/* optimize data alignment in the buffer */
buf->p = buf->data;
/* if the system buffer is full, don't insist */
if (ret < try)
break;
}
else {
ret = SSL_get_error(conn->xprt_ctx, ret);
if (ret == SSL_ERROR_WANT_WRITE) {
if (SSL_renegotiate_pending(conn->xprt_ctx)) {
/* handshake is running, and it may need to re-enable write */
conn->flags |= CO_FL_SSL_WAIT_HS;
__conn_sock_want_send(conn);
break;
}
/* we need to poll to retry a write later */
fd_cant_send(conn->t.sock.fd);
break;
}
else if (ret == SSL_ERROR_WANT_READ) {
/* handshake is running, and it needs to enable read */
conn->flags |= CO_FL_SSL_WAIT_HS;
__conn_sock_want_recv(conn);
break;
}
goto out_error;
}
}
return done;
out_error:
/* Clear openssl global errors stack */
ssl_sock_dump_errors(conn);
ERR_clear_error();
conn->flags |= CO_FL_ERROR;
return done;
}
static void ssl_sock_close(struct connection *conn) {
if (conn->xprt_ctx) {
SSL_free(conn->xprt_ctx);
conn->xprt_ctx = NULL;
sslconns--;
}
}
/* This function tries to perform a clean shutdown on an SSL connection, and in
* any case, flags the connection as reusable if no handshake was in progress.
*/
static void ssl_sock_shutw(struct connection *conn, int clean)
{
if (conn->flags & CO_FL_HANDSHAKE)
return;
if (!clean)
/* don't sent notify on SSL_shutdown */
SSL_CTX_set_quiet_shutdown(conn->xprt_ctx, 1);
/* no handshake was in progress, try a clean ssl shutdown */
if (SSL_shutdown(conn->xprt_ctx) <= 0) {
/* Clear openssl global errors stack */
ssl_sock_dump_errors(conn);
ERR_clear_error();
}
}
/* used for logging, may be changed for a sample fetch later */
const char *ssl_sock_get_cipher_name(struct connection *conn)
{
if (!conn->xprt && !conn->xprt_ctx)
return NULL;
return SSL_get_cipher_name(conn->xprt_ctx);
}
/* used for logging, may be changed for a sample fetch later */
const char *ssl_sock_get_proto_version(struct connection *conn)
{
if (!conn->xprt && !conn->xprt_ctx)
return NULL;
return SSL_get_version(conn->xprt_ctx);
}
/* Extract a serial from a cert, and copy it to a chunk.
* Returns 1 if serial is found and copied, 0 if no serial found and
* -1 if output is not large enough.
*/
static int
ssl_sock_get_serial(X509 *crt, struct chunk *out)
{
ASN1_INTEGER *serial;
serial = X509_get_serialNumber(crt);
if (!serial)
return 0;
if (out->size < serial->length)
return -1;
memcpy(out->str, serial->data, serial->length);
out->len = serial->length;
return 1;
}
/* Extract a cert to der, and copy it to a chunk.
* Returns 1 if cert is found and copied, 0 on der convertion failure and
* -1 if output is not large enough.
*/
static int
ssl_sock_crt2der(X509 *crt, struct chunk *out)
{
int len;
unsigned char *p = (unsigned char *)out->str;;
len =i2d_X509(crt, NULL);
if (len <= 0)
return 1;
if (out->size < len)
return -1;
i2d_X509(crt,&p);
out->len = len;
return 1;
}
/* Copy Date in ASN1_UTCTIME format in struct chunk out.
* Returns 1 if serial is found and copied, 0 if no valid time found
* and -1 if output is not large enough.
*/
static int
ssl_sock_get_time(ASN1_TIME *tm, struct chunk *out)
{
if (tm->type == V_ASN1_GENERALIZEDTIME) {
ASN1_GENERALIZEDTIME *gentm = (ASN1_GENERALIZEDTIME *)tm;
if (gentm->length < 12)
return 0;
if (gentm->data[0] != 0x32 || gentm->data[1] != 0x30)
return 0;
if (out->size < gentm->length-2)
return -1;
memcpy(out->str, gentm->data+2, gentm->length-2);
out->len = gentm->length-2;
return 1;
}
else if (tm->type == V_ASN1_UTCTIME) {
ASN1_UTCTIME *utctm = (ASN1_UTCTIME *)tm;
if (utctm->length < 10)
return 0;
if (utctm->data[0] >= 0x35)
return 0;
if (out->size < utctm->length)
return -1;
memcpy(out->str, utctm->data, utctm->length);
out->len = utctm->length;
return 1;
}
return 0;
}
/* Extract an entry from a X509_NAME and copy its value to an output chunk.
* Returns 1 if entry found, 0 if entry not found, or -1 if output not large enough.
*/
static int
ssl_sock_get_dn_entry(X509_NAME *a, const struct chunk *entry, int pos, struct chunk *out)
{
X509_NAME_ENTRY *ne;
ASN1_OBJECT *obj;
ASN1_STRING *data;
const unsigned char *data_ptr;
int data_len;
int i, j, n;
int cur = 0;
const char *s;
char tmp[128];
int name_count;
name_count = X509_NAME_entry_count(a);
out->len = 0;
for (i = 0; i < name_count; i++) {
if (pos < 0)
j = (name_count-1) - i;
else
j = i;
ne = X509_NAME_get_entry(a, j);
obj = X509_NAME_ENTRY_get_object(ne);
data = X509_NAME_ENTRY_get_data(ne);
data_ptr = ASN1_STRING_get0_data(data);
data_len = ASN1_STRING_length(data);
n = OBJ_obj2nid(obj);
if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
i2t_ASN1_OBJECT(tmp, sizeof(tmp), obj);
s = tmp;
}
if (chunk_strcasecmp(entry, s) != 0)
continue;
if (pos < 0)
cur--;
else
cur++;
if (cur != pos)
continue;
if (data_len > out->size)
return -1;
memcpy(out->str, data_ptr, data_len);
out->len = data_len;
return 1;
}
return 0;
}
/* Extract and format full DN from a X509_NAME and copy result into a chunk
* Returns 1 if dn entries exits, 0 if no dn entry found or -1 if output is not large enough.
*/
static int
ssl_sock_get_dn_oneline(X509_NAME *a, struct chunk *out)
{
X509_NAME_ENTRY *ne;
ASN1_OBJECT *obj;
ASN1_STRING *data;
const unsigned char *data_ptr;
int data_len;
int i, n, ln;
int l = 0;
const char *s;
char *p;
char tmp[128];
int name_count;
name_count = X509_NAME_entry_count(a);
out->len = 0;
p = out->str;
for (i = 0; i < name_count; i++) {
ne = X509_NAME_get_entry(a, i);
obj = X509_NAME_ENTRY_get_object(ne);
data = X509_NAME_ENTRY_get_data(ne);
data_ptr = ASN1_STRING_get0_data(data);
data_len = ASN1_STRING_length(data);
n = OBJ_obj2nid(obj);
if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
i2t_ASN1_OBJECT(tmp, sizeof(tmp), obj);
s = tmp;
}
ln = strlen(s);
l += 1 + ln + 1 + data_len;
if (l > out->size)
return -1;
out->len = l;
*(p++)='/';
memcpy(p, s, ln);
p += ln;
*(p++)='=';
memcpy(p, data_ptr, data_len);
p += data_len;
}
if (!out->len)
return 0;
return 1;
}
char *ssl_sock_get_version(struct connection *conn)
{
if (!ssl_sock_is_ssl(conn))
return NULL;
return (char *)SSL_get_version(conn->xprt_ctx);
}
/* Sets advertised SNI for outgoing connections. Please set <hostname> to NULL
* to disable SNI.
*/
void ssl_sock_set_servername(struct connection *conn, const char *hostname)
{
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
char *prev_name;
if (!ssl_sock_is_ssl(conn))
return;
/* if the SNI changes, we must destroy the reusable context so that a
* new connection will present a new SNI. As an optimization we could
* later imagine having a small cache of ssl_ctx to hold a few SNI per
* server.
*/
prev_name = (char *)SSL_get_servername(conn->xprt_ctx, TLSEXT_NAMETYPE_host_name);
if ((!prev_name && hostname) ||
(prev_name && (!hostname || strcmp(hostname, prev_name) != 0)))
SSL_set_session(conn->xprt_ctx, NULL);
SSL_set_tlsext_host_name(conn->xprt_ctx, hostname);
#endif
}
/* Extract peer certificate's common name into the chunk dest
* Returns
* the len of the extracted common name
* or 0 if no CN found in DN
* or -1 on error case (i.e. no peer certificate)
*/
int ssl_sock_get_remote_common_name(struct connection *conn, struct chunk *dest)
{
X509 *crt = NULL;
X509_NAME *name;
const char find_cn[] = "CN";
const struct chunk find_cn_chunk = {
.str = (char *)&find_cn,
.len = sizeof(find_cn)-1
};
int result = -1;
if (!ssl_sock_is_ssl(conn))
goto out;
/* SSL_get_peer_certificate, it increase X509 * ref count */
crt = SSL_get_peer_certificate(conn->xprt_ctx);
if (!crt)
goto out;
name = X509_get_subject_name(crt);
if (!name)
goto out;
result = ssl_sock_get_dn_entry(name, &find_cn_chunk, 1, dest);
out:
if (crt)
X509_free(crt);
return result;
}
/* returns 1 if client passed a certificate for this session, 0 if not */
int ssl_sock_get_cert_used_sess(struct connection *conn)
{
X509 *crt = NULL;
if (!ssl_sock_is_ssl(conn))
return 0;
/* SSL_get_peer_certificate, it increase X509 * ref count */
crt = SSL_get_peer_certificate(conn->xprt_ctx);
if (!crt)
return 0;
X509_free(crt);
return 1;
}
/* returns 1 if client passed a certificate for this connection, 0 if not */
int ssl_sock_get_cert_used_conn(struct connection *conn)
{
if (!ssl_sock_is_ssl(conn))
return 0;
return SSL_SOCK_ST_FL_VERIFY_DONE & conn->xprt_st ? 1 : 0;
}
/* returns result from SSL verify */
unsigned int ssl_sock_get_verify_result(struct connection *conn)
{
if (!ssl_sock_is_ssl(conn))
return (unsigned int)X509_V_ERR_APPLICATION_VERIFICATION;
return (unsigned int)SSL_get_verify_result(conn->xprt_ctx);
}
/***** Below are some sample fetching functions for ACL/patterns *****/
/* boolean, returns true if client cert was present */
static int
smp_fetch_ssl_fc_has_crt(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
smp->flags = 0;
smp->data.type = SMP_T_BOOL;
smp->data.u.sint = SSL_SOCK_ST_FL_VERIFY_DONE & conn->xprt_st ? 1 : 0;
return 1;
}
/* binary, returns a certificate in a binary chunk (der/raw).
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_der(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
smp_trash = get_trash_chunk();
if (ssl_sock_crt2der(crt, smp_trash) <= 0)
goto out;
smp->data.u.str = *smp_trash;
smp->data.type = SMP_T_BIN;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* binary, returns serial of certificate in a binary chunk.
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_serial(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
smp_trash = get_trash_chunk();
if (ssl_sock_get_serial(crt, smp_trash) <= 0)
goto out;
smp->data.u.str = *smp_trash;
smp->data.type = SMP_T_BIN;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* binary, returns the client certificate's SHA-1 fingerprint (SHA-1 hash of DER-encoded certificate) in a binary chunk.
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_sha1(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
const EVP_MD *digest;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
smp_trash = get_trash_chunk();
digest = EVP_sha1();
X509_digest(crt, digest, (unsigned char *)smp_trash->str, (unsigned int *)&smp_trash->len);
smp->data.u.str = *smp_trash;
smp->data.type = SMP_T_BIN;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* string, returns certificate's notafter date in ASN1_UTCTIME format.
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_notafter(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
smp_trash = get_trash_chunk();
if (ssl_sock_get_time(X509_get_notAfter(crt), smp_trash) <= 0)
goto out;
smp->data.u.str = *smp_trash;
smp->data.type = SMP_T_STR;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* string, returns a string of a formatted full dn \C=..\O=..\OU=.. \CN=.. of certificate's issuer
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_i_dn(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
X509_NAME *name;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
name = X509_get_issuer_name(crt);
if (!name)
goto out;
smp_trash = get_trash_chunk();
if (args && args[0].type == ARGT_STR) {
int pos = 1;
if (args[1].type == ARGT_SINT)
pos = args[1].data.sint;
if (ssl_sock_get_dn_entry(name, &args[0].data.str, pos, smp_trash) <= 0)
goto out;
}
else if (ssl_sock_get_dn_oneline(name, smp_trash) <= 0)
goto out;
smp->data.type = SMP_T_STR;
smp->data.u.str = *smp_trash;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* string, returns notbefore date in ASN1_UTCTIME format.
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_notbefore(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
smp_trash = get_trash_chunk();
if (ssl_sock_get_time(X509_get_notBefore(crt), smp_trash) <= 0)
goto out;
smp->data.u.str = *smp_trash;
smp->data.type = SMP_T_STR;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* string, returns a string of a formatted full dn \C=..\O=..\OU=.. \CN=.. of certificate's subject
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_s_dn(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt = NULL;
X509_NAME *name;
int ret = 0;
struct chunk *smp_trash;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
goto out;
name = X509_get_subject_name(crt);
if (!name)
goto out;
smp_trash = get_trash_chunk();
if (args && args[0].type == ARGT_STR) {
int pos = 1;
if (args[1].type == ARGT_SINT)
pos = args[1].data.sint;
if (ssl_sock_get_dn_entry(name, &args[0].data.str, pos, smp_trash) <= 0)
goto out;
}
else if (ssl_sock_get_dn_oneline(name, smp_trash) <= 0)
goto out;
smp->data.type = SMP_T_STR;
smp->data.u.str = *smp_trash;
ret = 1;
out:
/* SSL_get_peer_certificate, it increase X509 * ref count */
if (cert_peer && crt)
X509_free(crt);
return ret;
}
/* integer, returns true if current session use a client certificate */
static int
smp_fetch_ssl_c_used(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
X509 *crt;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
/* SSL_get_peer_certificate returns a ptr on allocated X509 struct */
crt = SSL_get_peer_certificate(conn->xprt_ctx);
if (crt) {
X509_free(crt);
}
smp->data.type = SMP_T_BOOL;
smp->data.u.sint = (crt != NULL);
return 1;
}
/* integer, returns the certificate version
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_version(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
return 0;
smp->data.u.sint = (unsigned int)(1 + X509_get_version(crt));
/* SSL_get_peer_certificate increase X509 * ref count */
if (cert_peer)
X509_free(crt);
smp->data.type = SMP_T_SINT;
return 1;
}
/* string, returns the certificate's signature algorithm.
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_sig_alg(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt;
__OPENSSL_110_CONST__ ASN1_OBJECT *algorithm;
int nid;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
return 0;
X509_ALGOR_get0(&algorithm, NULL, NULL, X509_get0_tbs_sigalg(crt));
nid = OBJ_obj2nid(algorithm);
smp->data.u.str.str = (char *)OBJ_nid2sn(nid);
if (!smp->data.u.str.str) {
/* SSL_get_peer_certificate increase X509 * ref count */
if (cert_peer)
X509_free(crt);
return 0;
}
smp->data.type = SMP_T_STR;
smp->flags |= SMP_F_CONST;
smp->data.u.str.len = strlen(smp->data.u.str.str);
/* SSL_get_peer_certificate increase X509 * ref count */
if (cert_peer)
X509_free(crt);
return 1;
}
/* string, returns the certificate's key algorithm.
* The 5th keyword char is used to know if SSL_get_certificate or SSL_get_peer_certificate
* should be use.
*/
static int
smp_fetch_ssl_x_key_alg(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
int cert_peer = (kw[4] == 'c') ? 1 : 0;
X509 *crt;
ASN1_OBJECT *algorithm;
int nid;
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
if (cert_peer)
crt = SSL_get_peer_certificate(conn->xprt_ctx);
else
crt = SSL_get_certificate(conn->xprt_ctx);
if (!crt)
return 0;
X509_PUBKEY_get0_param(&algorithm, NULL, NULL, NULL, X509_get_X509_PUBKEY(crt));
nid = OBJ_obj2nid(algorithm);
smp->data.u.str.str = (char *)OBJ_nid2sn(nid);
if (!smp->data.u.str.str) {
/* SSL_get_peer_certificate increase X509 * ref count */
if (cert_peer)
X509_free(crt);
return 0;
}
smp->data.type = SMP_T_STR;
smp->flags |= SMP_F_CONST;
smp->data.u.str.len = strlen(smp->data.u.str.str);
if (cert_peer)
X509_free(crt);
return 1;
}
/* boolean, returns true if front conn. transport layer is SSL.
* This function is also usable on backend conn if the fetch keyword 5th
* char is 'b'.
*/
static int
smp_fetch_ssl_fc(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
smp->data.type = SMP_T_BOOL;
smp->data.u.sint = (conn && conn->xprt == &ssl_sock);
return 1;
}
/* boolean, returns true if client present a SNI */
static int
smp_fetch_ssl_fc_has_sni(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
struct connection *conn = objt_conn(smp->sess->origin);
smp->data.type = SMP_T_BOOL;
smp->data.u.sint = (conn && conn->xprt == &ssl_sock) &&
conn->xprt_ctx &&
SSL_get_servername(conn->xprt_ctx, TLSEXT_NAMETYPE_host_name) != NULL;
return 1;
#else
return 0;
#endif
}
/* boolean, returns true if client session has been resumed */
static int
smp_fetch_ssl_fc_is_resumed(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn(smp->sess->origin);
smp->data.type = SMP_T_BOOL;
smp->data.u.sint = (conn && conn->xprt == &ssl_sock) &&
conn->xprt_ctx &&
SSL_session_reused(conn->xprt_ctx);
return 1;
}
/* string, returns the used cipher if front conn. transport layer is SSL.
* This function is also usable on backend conn if the fetch keyword 5th
* char is 'b'.
*/
static int
smp_fetch_ssl_fc_cipher(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
smp->flags = 0;
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
smp->data.u.str.str = (char *)SSL_get_cipher_name(conn->xprt_ctx);
if (!smp->data.u.str.str)
return 0;
smp->data.type = SMP_T_STR;
smp->flags |= SMP_F_CONST;
smp->data.u.str.len = strlen(smp->data.u.str.str);
return 1;
}
/* integer, returns the algoritm's keysize if front conn. transport layer
* is SSL.
* This function is also usable on backend conn if the fetch keyword 5th
* char is 'b'.
*/
static int
smp_fetch_ssl_fc_alg_keysize(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
int sint;
smp->flags = 0;
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
if (!SSL_get_cipher_bits(conn->xprt_ctx, &sint))
return 0;
smp->data.u.sint = sint;
smp->data.type = SMP_T_SINT;
return 1;
}
/* integer, returns the used keysize if front conn. transport layer is SSL.
* This function is also usable on backend conn if the fetch keyword 5th
* char is 'b'.
*/
static int
smp_fetch_ssl_fc_use_keysize(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
smp->flags = 0;
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
smp->data.u.sint = (unsigned int)SSL_get_cipher_bits(conn->xprt_ctx, NULL);
if (!smp->data.u.sint)
return 0;
smp->data.type = SMP_T_SINT;
return 1;
}
#ifdef OPENSSL_NPN_NEGOTIATED
static int
smp_fetch_ssl_fc_npn(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
smp->flags = SMP_F_CONST;
smp->data.type = SMP_T_STR;
conn = objt_conn(smp->sess->origin);
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
smp->data.u.str.str = NULL;
SSL_get0_next_proto_negotiated(conn->xprt_ctx,
(const unsigned char **)&smp->data.u.str.str, (unsigned *)&smp->data.u.str.len);
if (!smp->data.u.str.str)
return 0;
return 1;
}
#endif
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
static int
smp_fetch_ssl_fc_alpn(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
smp->flags = SMP_F_CONST;
smp->data.type = SMP_T_STR;
conn = objt_conn(smp->sess->origin);
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
smp->data.u.str.str = NULL;
SSL_get0_alpn_selected(conn->xprt_ctx,
(const unsigned char **)&smp->data.u.str.str, (unsigned *)&smp->data.u.str.len);
if (!smp->data.u.str.str)
return 0;
return 1;
}
#endif
/* string, returns the used protocol if front conn. transport layer is SSL.
* This function is also usable on backend conn if the fetch keyword 5th
* char is 'b'.
*/
static int
smp_fetch_ssl_fc_protocol(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
smp->flags = 0;
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
smp->data.u.str.str = (char *)SSL_get_version(conn->xprt_ctx);
if (!smp->data.u.str.str)
return 0;
smp->data.type = SMP_T_STR;
smp->flags = SMP_F_CONST;
smp->data.u.str.len = strlen(smp->data.u.str.str);
return 1;
}
/* binary, returns the SSL stream id if front conn. transport layer is SSL.
* This function is also usable on backend conn if the fetch keyword 5th
* char is 'b'.
*/
static int
smp_fetch_ssl_fc_session_id(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
#if OPENSSL_VERSION_NUMBER > 0x0090800fL
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
SSL_SESSION *ssl_sess;
smp->flags = SMP_F_CONST;
smp->data.type = SMP_T_BIN;
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
ssl_sess = SSL_get_session(conn->xprt_ctx);
if (!ssl_sess)
return 0;
smp->data.u.str.str = (char *)SSL_SESSION_get_id(ssl_sess, (unsigned int *)&smp->data.u.str.len);
if (!smp->data.u.str.str || !smp->data.u.str.len)
return 0;
return 1;
#else
return 0;
#endif
}
static int
smp_fetch_ssl_fc_sni(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
struct connection *conn;
smp->flags = SMP_F_CONST;
smp->data.type = SMP_T_STR;
conn = objt_conn(smp->sess->origin);
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
smp->data.u.str.str = (char *)SSL_get_servername(conn->xprt_ctx, TLSEXT_NAMETYPE_host_name);
if (!smp->data.u.str.str)
return 0;
smp->data.u.str.len = strlen(smp->data.u.str.str);
return 1;
#else
return 0;
#endif
}
static int
smp_fetch_ssl_fc_unique_id(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
#if OPENSSL_VERSION_NUMBER > 0x0090800fL
struct connection *conn = objt_conn((kw[4] != 'b') ? smp->sess->origin :
smp->strm ? smp->strm->si[1].end : NULL);
int finished_len;
struct chunk *finished_trash;
smp->flags = 0;
if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags |= SMP_F_MAY_CHANGE;
return 0;
}
finished_trash = get_trash_chunk();
if (!SSL_session_reused(conn->xprt_ctx))
finished_len = SSL_get_peer_finished(conn->xprt_ctx, finished_trash->str, finished_trash->size);
else
finished_len = SSL_get_finished(conn->xprt_ctx, finished_trash->str, finished_trash->size);
if (!finished_len)
return 0;
finished_trash->len = finished_len;
smp->data.u.str = *finished_trash;
smp->data.type = SMP_T_BIN;
return 1;
#else
return 0;
#endif
}
/* integer, returns the first verify error in CA chain of client certificate chain. */
static int
smp_fetch_ssl_c_ca_err(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags = SMP_F_MAY_CHANGE;
return 0;
}
smp->data.type = SMP_T_SINT;
smp->data.u.sint = (unsigned long long int)SSL_SOCK_ST_TO_CA_ERROR(conn->xprt_st);
smp->flags = 0;
return 1;
}
/* integer, returns the depth of the first verify error in CA chain of client certificate chain. */
static int
smp_fetch_ssl_c_ca_err_depth(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags = SMP_F_MAY_CHANGE;
return 0;
}
smp->data.type = SMP_T_SINT;
smp->data.u.sint = (long long int)SSL_SOCK_ST_TO_CAEDEPTH(conn->xprt_st);
smp->flags = 0;
return 1;
}
/* integer, returns the first verify error on client certificate */
static int
smp_fetch_ssl_c_err(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags = SMP_F_MAY_CHANGE;
return 0;
}
smp->data.type = SMP_T_SINT;
smp->data.u.sint = (long long int)SSL_SOCK_ST_TO_CRTERROR(conn->xprt_st);
smp->flags = 0;
return 1;
}
/* integer, returns the verify result on client cert */
static int
smp_fetch_ssl_c_verify(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn;
conn = objt_conn(smp->sess->origin);
if (!conn || conn->xprt != &ssl_sock)
return 0;
if (!(conn->flags & CO_FL_CONNECTED)) {
smp->flags = SMP_F_MAY_CHANGE;
return 0;
}
if (!conn->xprt_ctx)
return 0;
smp->data.type = SMP_T_SINT;
smp->data.u.sint = (long long int)SSL_get_verify_result(conn->xprt_ctx);
smp->flags = 0;
return 1;
}
/* parse the "ca-file" bind keyword */
static int bind_parse_ca_file(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing CAfile path", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[cur_arg + 1] != '/') && global_ssl.ca_base)
memprintf(&conf->ca_file, "%s/%s", global_ssl.ca_base, args[cur_arg + 1]);
else
memprintf(&conf->ca_file, "%s", args[cur_arg + 1]);
return 0;
}
/* parse the "ca-sign-file" bind keyword */
static int bind_parse_ca_sign_file(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing CAfile path", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[cur_arg + 1] != '/') && global_ssl.ca_base)
memprintf(&conf->ca_sign_file, "%s/%s", global_ssl.ca_base, args[cur_arg + 1]);
else
memprintf(&conf->ca_sign_file, "%s", args[cur_arg + 1]);
return 0;
}
/* parse the "ca-sign-pass" bind keyword */
static int bind_parse_ca_sign_pass(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing CAkey password", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
memprintf(&conf->ca_sign_pass, "%s", args[cur_arg + 1]);
return 0;
}
/* parse the "ciphers" bind keyword */
static int bind_parse_ciphers(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
if (!*args[cur_arg + 1]) {
memprintf(err, "'%s' : missing cipher suite", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
free(conf->ciphers);
conf->ciphers = strdup(args[cur_arg + 1]);
return 0;
}
/* parse the "crt" bind keyword */
static int bind_parse_crt(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
char path[MAXPATHLEN];
if (!*args[cur_arg + 1]) {
memprintf(err, "'%s' : missing certificate location", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[cur_arg + 1] != '/' ) && global_ssl.crt_base) {
if ((strlen(global_ssl.crt_base) + 1 + strlen(args[cur_arg + 1]) + 1) > MAXPATHLEN) {
memprintf(err, "'%s' : path too long", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
snprintf(path, sizeof(path), "%s/%s", global_ssl.crt_base, args[cur_arg + 1]);
if (ssl_sock_load_cert(path, conf, err) > 0)
return ERR_ALERT | ERR_FATAL;
return 0;
}
if (ssl_sock_load_cert(args[cur_arg + 1], conf, err) > 0)
return ERR_ALERT | ERR_FATAL;
return 0;
}
/* parse the "crt-list" bind keyword */
static int bind_parse_crt_list(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
if (!*args[cur_arg + 1]) {
memprintf(err, "'%s' : missing certificate location", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if (ssl_sock_load_cert_list_file(args[cur_arg + 1], conf, err) > 0) {
memprintf(err, "'%s' : %s", args[cur_arg], *err);
return ERR_ALERT | ERR_FATAL;
}
return 0;
}
/* parse the "crl-file" bind keyword */
static int bind_parse_crl_file(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#ifndef X509_V_FLAG_CRL_CHECK
if (err)
memprintf(err, "'%s' : library does not support CRL verify", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#else
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing CRLfile path", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[cur_arg + 1] != '/') && global_ssl.ca_base)
memprintf(&conf->crl_file, "%s/%s", global_ssl.ca_base, args[cur_arg + 1]);
else
memprintf(&conf->crl_file, "%s", args[cur_arg + 1]);
return 0;
#endif
}
/* parse the "ecdhe" bind keyword keyword */
static int bind_parse_ecdhe(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#if OPENSSL_VERSION_NUMBER < 0x0090800fL
if (err)
memprintf(err, "'%s' : library does not support elliptic curve Diffie-Hellman (too old)", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#elif defined(OPENSSL_NO_ECDH)
if (err)
memprintf(err, "'%s' : library does not support elliptic curve Diffie-Hellman (disabled via OPENSSL_NO_ECDH)", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#else
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing named curve", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
conf->ecdhe = strdup(args[cur_arg + 1]);
return 0;
#endif
}
/* parse the "crt-ignore-err" and "ca-ignore-err" bind keywords */
static int bind_parse_ignore_err(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
int code;
char *p = args[cur_arg + 1];
unsigned long long *ignerr = &conf->crt_ignerr;
if (!*p) {
if (err)
memprintf(err, "'%s' : missing error IDs list", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if (strcmp(args[cur_arg], "ca-ignore-err") == 0)
ignerr = &conf->ca_ignerr;
if (strcmp(p, "all") == 0) {
*ignerr = ~0ULL;
return 0;
}
while (p) {
code = atoi(p);
if ((code <= 0) || (code > 63)) {
if (err)
memprintf(err, "'%s' : ID '%d' out of range (1..63) in error IDs list '%s'",
args[cur_arg], code, args[cur_arg + 1]);
return ERR_ALERT | ERR_FATAL;
}
*ignerr |= 1ULL << code;
p = strchr(p, ',');
if (p)
p++;
}
return 0;
}
/* parse the "force-sslv3" bind keyword */
static int bind_parse_force_sslv3(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_USE_SSLV3;
return 0;
}
/* parse the "force-tlsv10" bind keyword */
static int bind_parse_force_tlsv10(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_USE_TLSV10;
return 0;
}
/* parse the "force-tlsv11" bind keyword */
static int bind_parse_force_tlsv11(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#if SSL_OP_NO_TLSv1_1
conf->ssl_options |= BC_SSL_O_USE_TLSV11;
return 0;
#else
if (err)
memprintf(err, "'%s' : library does not support protocol TLSv1.1", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif
}
/* parse the "force-tlsv12" bind keyword */
static int bind_parse_force_tlsv12(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#if SSL_OP_NO_TLSv1_2
conf->ssl_options |= BC_SSL_O_USE_TLSV12;
return 0;
#else
if (err)
memprintf(err, "'%s' : library does not support protocol TLSv1.2", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif
}
/* parse the "no-tls-tickets" bind keyword */
static int bind_parse_no_tls_tickets(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_NO_TLS_TICKETS;
return 0;
}
/* parse the "no-sslv3" bind keyword */
static int bind_parse_no_sslv3(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_NO_SSLV3;
return 0;
}
/* parse the "no-tlsv10" bind keyword */
static int bind_parse_no_tlsv10(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_NO_TLSV10;
return 0;
}
/* parse the "no-tlsv11" bind keyword */
static int bind_parse_no_tlsv11(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_NO_TLSV11;
return 0;
}
/* parse the "no-tlsv12" bind keyword */
static int bind_parse_no_tlsv12(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->ssl_options |= BC_SSL_O_NO_TLSV12;
return 0;
}
/* parse the "npn" bind keyword */
static int bind_parse_npn(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#ifdef OPENSSL_NPN_NEGOTIATED
char *p1, *p2;
if (!*args[cur_arg + 1]) {
memprintf(err, "'%s' : missing the comma-delimited NPN protocol suite", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
free(conf->npn_str);
/* the NPN string is built as a suite of (<len> <name>)*,
* so we reuse each comma to store the next <len> and need
* one more for the end of the string.
*/
conf->npn_len = strlen(args[cur_arg + 1]) + 1;
conf->npn_str = calloc(1, conf->npn_len + 1);
memcpy(conf->npn_str + 1, args[cur_arg + 1], conf->npn_len);
/* replace commas with the name length */
p1 = conf->npn_str;
p2 = p1 + 1;
while (1) {
p2 = memchr(p1 + 1, ',', conf->npn_str + conf->npn_len - (p1 + 1));
if (!p2)
p2 = p1 + 1 + strlen(p1 + 1);
if (p2 - (p1 + 1) > 255) {
*p2 = '\0';
memprintf(err, "'%s' : NPN protocol name too long : '%s'", args[cur_arg], p1 + 1);
return ERR_ALERT | ERR_FATAL;
}
*p1 = p2 - (p1 + 1);
p1 = p2;
if (!*p2)
break;
*(p2++) = '\0';
}
return 0;
#else
if (err)
memprintf(err, "'%s' : library does not support TLS NPN extension", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif
}
/* parse the "alpn" bind keyword */
static int bind_parse_alpn(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
char *p1, *p2;
if (!*args[cur_arg + 1]) {
memprintf(err, "'%s' : missing the comma-delimited ALPN protocol suite", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
free(conf->alpn_str);
/* the ALPN string is built as a suite of (<len> <name>)*,
* so we reuse each comma to store the next <len> and need
* one more for the end of the string.
*/
conf->alpn_len = strlen(args[cur_arg + 1]) + 1;
conf->alpn_str = calloc(1, conf->alpn_len + 1);
memcpy(conf->alpn_str + 1, args[cur_arg + 1], conf->alpn_len);
/* replace commas with the name length */
p1 = conf->alpn_str;
p2 = p1 + 1;
while (1) {
p2 = memchr(p1 + 1, ',', conf->alpn_str + conf->alpn_len - (p1 + 1));
if (!p2)
p2 = p1 + 1 + strlen(p1 + 1);
if (p2 - (p1 + 1) > 255) {
*p2 = '\0';
memprintf(err, "'%s' : ALPN protocol name too long : '%s'", args[cur_arg], p1 + 1);
return ERR_ALERT | ERR_FATAL;
}
*p1 = p2 - (p1 + 1);
p1 = p2;
if (!*p2)
break;
*(p2++) = '\0';
}
return 0;
#else
if (err)
memprintf(err, "'%s' : library does not support TLS ALPN extension", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif
}
/* parse the "ssl" bind keyword */
static int bind_parse_ssl(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->xprt = &ssl_sock;
conf->is_ssl = 1;
if (global_ssl.listen_default_ciphers && !conf->ciphers)
conf->ciphers = strdup(global_ssl.listen_default_ciphers);
conf->ssl_options |= global_ssl.listen_default_ssloptions;
return 0;
}
/* parse the "generate-certificates" bind keyword */
static int bind_parse_generate_certs(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
conf->generate_certs = 1;
#else
memprintf(err, "%sthis version of openssl cannot generate SSL certificates.\n",
err && *err ? *err : "");
#endif
return 0;
}
/* parse the "strict-sni" bind keyword */
static int bind_parse_strict_sni(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
conf->strict_sni = 1;
return 0;
}
/* parse the "tls-ticket-keys" bind keyword */
static int bind_parse_tls_ticket_keys(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
FILE *f;
int i = 0;
char thisline[LINESIZE];
struct tls_keys_ref *keys_ref;
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing TLS ticket keys file path", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
keys_ref = tlskeys_ref_lookup(args[cur_arg + 1]);
if(keys_ref) {
conf->keys_ref = keys_ref;
return 0;
}
keys_ref = malloc(sizeof(*keys_ref));
keys_ref->tlskeys = malloc(TLS_TICKETS_NO * sizeof(struct tls_sess_key));
if ((f = fopen(args[cur_arg + 1], "r")) == NULL) {
if (err)
memprintf(err, "'%s' : unable to load ssl tickets keys file", args[cur_arg+1]);
return ERR_ALERT | ERR_FATAL;
}
keys_ref->filename = strdup(args[cur_arg + 1]);
while (fgets(thisline, sizeof(thisline), f) != NULL) {
int len = strlen(thisline);
/* Strip newline characters from the end */
if(thisline[len - 1] == '\n')
thisline[--len] = 0;
if(thisline[len - 1] == '\r')
thisline[--len] = 0;
if (base64dec(thisline, len, (char *) (keys_ref->tlskeys + i % TLS_TICKETS_NO), sizeof(struct tls_sess_key)) != sizeof(struct tls_sess_key)) {
if (err)
memprintf(err, "'%s' : unable to decode base64 key on line %d", args[cur_arg+1], i + 1);
fclose(f);
return ERR_ALERT | ERR_FATAL;
}
i++;
}
if (i < TLS_TICKETS_NO) {
if (err)
memprintf(err, "'%s' : please supply at least %d keys in the tls-tickets-file", args[cur_arg+1], TLS_TICKETS_NO);
fclose(f);
return ERR_ALERT | ERR_FATAL;
}
fclose(f);
/* Use penultimate key for encryption, handle when TLS_TICKETS_NO = 1 */
i -= 2;
keys_ref->tls_ticket_enc_index = i < 0 ? 0 : i % TLS_TICKETS_NO;
keys_ref->unique_id = -1;
conf->keys_ref = keys_ref;
LIST_ADD(&tlskeys_reference, &keys_ref->list);
return 0;
#else
if (err)
memprintf(err, "'%s' : TLS ticket callback extension not supported", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif /* SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB */
}
/* parse the "verify" bind keyword */
static int bind_parse_verify(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
{
if (!*args[cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing verify method", args[cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if (strcmp(args[cur_arg + 1], "none") == 0)
conf->verify = SSL_SOCK_VERIFY_NONE;
else if (strcmp(args[cur_arg + 1], "optional") == 0)
conf->verify = SSL_SOCK_VERIFY_OPTIONAL;
else if (strcmp(args[cur_arg + 1], "required") == 0)
conf->verify = SSL_SOCK_VERIFY_REQUIRED;
else {
if (err)
memprintf(err, "'%s' : unknown verify method '%s', only 'none', 'optional', and 'required' are supported\n",
args[cur_arg], args[cur_arg + 1]);
return ERR_ALERT | ERR_FATAL;
}
return 0;
}
/************** "server" keywords ****************/
/* parse the "ca-file" server keyword */
static int srv_parse_ca_file(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
if (!*args[*cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing CAfile path", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[*cur_arg + 1] != '/') && global_ssl.ca_base)
memprintf(&newsrv->ssl_ctx.ca_file, "%s/%s", global_ssl.ca_base, args[*cur_arg + 1]);
else
memprintf(&newsrv->ssl_ctx.ca_file, "%s", args[*cur_arg + 1]);
return 0;
}
/* parse the "check-ssl" server keyword */
static int srv_parse_check_ssl(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->check.use_ssl = 1;
if (global_ssl.connect_default_ciphers && !newsrv->ssl_ctx.ciphers)
newsrv->ssl_ctx.ciphers = strdup(global_ssl.connect_default_ciphers);
newsrv->ssl_ctx.options |= global_ssl.connect_default_ssloptions;
return 0;
}
/* parse the "ciphers" server keyword */
static int srv_parse_ciphers(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
if (!*args[*cur_arg + 1]) {
memprintf(err, "'%s' : missing cipher suite", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
free(newsrv->ssl_ctx.ciphers);
newsrv->ssl_ctx.ciphers = strdup(args[*cur_arg + 1]);
return 0;
}
/* parse the "crl-file" server keyword */
static int srv_parse_crl_file(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
#ifndef X509_V_FLAG_CRL_CHECK
if (err)
memprintf(err, "'%s' : library does not support CRL verify", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
#else
if (!*args[*cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing CRLfile path", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[*cur_arg + 1] != '/') && global_ssl.ca_base)
memprintf(&newsrv->ssl_ctx.crl_file, "%s/%s", global_ssl.ca_base, args[*cur_arg + 1]);
else
memprintf(&newsrv->ssl_ctx.crl_file, "%s", args[*cur_arg + 1]);
return 0;
#endif
}
/* parse the "crt" server keyword */
static int srv_parse_crt(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
if (!*args[*cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing certificate file path", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if ((*args[*cur_arg + 1] != '/') && global_ssl.crt_base)
memprintf(&newsrv->ssl_ctx.client_crt, "%s/%s", global_ssl.ca_base, args[*cur_arg + 1]);
else
memprintf(&newsrv->ssl_ctx.client_crt, "%s", args[*cur_arg + 1]);
return 0;
}
/* parse the "force-sslv3" server keyword */
static int srv_parse_force_sslv3(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_USE_SSLV3;
return 0;
}
/* parse the "force-tlsv10" server keyword */
static int srv_parse_force_tlsv10(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_USE_TLSV10;
return 0;
}
/* parse the "force-tlsv11" server keyword */
static int srv_parse_force_tlsv11(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
#if SSL_OP_NO_TLSv1_1
newsrv->ssl_ctx.options |= SRV_SSL_O_USE_TLSV11;
return 0;
#else
if (err)
memprintf(err, "'%s' : library does not support protocol TLSv1.1", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif
}
/* parse the "force-tlsv12" server keyword */
static int srv_parse_force_tlsv12(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
#if SSL_OP_NO_TLSv1_2
newsrv->ssl_ctx.options |= SRV_SSL_O_USE_TLSV12;
return 0;
#else
if (err)
memprintf(err, "'%s' : library does not support protocol TLSv1.2", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
#endif
}
/* parse the "no-ssl-reuse" server keyword */
static int srv_parse_no_ssl_reuse(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_NO_REUSE;
return 0;
}
/* parse the "no-sslv3" server keyword */
static int srv_parse_no_sslv3(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_NO_SSLV3;
return 0;
}
/* parse the "no-tlsv10" server keyword */
static int srv_parse_no_tlsv10(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_NO_TLSV10;
return 0;
}
/* parse the "no-tlsv11" server keyword */
static int srv_parse_no_tlsv11(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_NO_TLSV11;
return 0;
}
/* parse the "no-tlsv12" server keyword */
static int srv_parse_no_tlsv12(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_NO_TLSV12;
return 0;
}
/* parse the "no-tls-tickets" server keyword */
static int srv_parse_no_tls_tickets(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->ssl_ctx.options |= SRV_SSL_O_NO_TLS_TICKETS;
return 0;
}
/* parse the "send-proxy-v2-ssl" server keyword */
static int srv_parse_send_proxy_ssl(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->pp_opts |= SRV_PP_V2;
newsrv->pp_opts |= SRV_PP_V2_SSL;
return 0;
}
/* parse the "send-proxy-v2-ssl-cn" server keyword */
static int srv_parse_send_proxy_cn(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->pp_opts |= SRV_PP_V2;
newsrv->pp_opts |= SRV_PP_V2_SSL;
newsrv->pp_opts |= SRV_PP_V2_SSL_CN;
return 0;
}
/* parse the "sni" server keyword */
static int srv_parse_sni(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
#ifndef SSL_CTRL_SET_TLSEXT_HOSTNAME
memprintf(err, "'%s' : the current SSL library doesn't support the SNI TLS extension", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
#else
int idx;
struct sample_expr *expr;
if (!*args[*cur_arg + 1]) {
memprintf(err, "'%s' : missing sni expression", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
idx = (*cur_arg) + 1;
proxy->conf.args.ctx = ARGC_SRV;
expr = sample_parse_expr((char **)args, &idx, px->conf.file, px->conf.line, err, &proxy->conf.args);
if (!expr) {
memprintf(err, "error detected while parsing sni expression : %s", *err);
return ERR_ALERT | ERR_FATAL;
}
if (!(expr->fetch->val & SMP_VAL_BE_SRV_CON)) {
memprintf(err, "error detected while parsing sni expression : "
" fetch method '%s' extracts information from '%s', none of which is available here.\n",
args[idx-1], sample_src_names(expr->fetch->use));
return ERR_ALERT | ERR_FATAL;
}
px->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
newsrv->ssl_ctx.sni = expr;
return 0;
#endif
}
/* parse the "ssl" server keyword */
static int srv_parse_ssl(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
newsrv->use_ssl = 1;
if (global_ssl.connect_default_ciphers && !newsrv->ssl_ctx.ciphers)
newsrv->ssl_ctx.ciphers = strdup(global_ssl.connect_default_ciphers);
return 0;
}
/* parse the "verify" server keyword */
static int srv_parse_verify(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
if (!*args[*cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing verify method", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
if (strcmp(args[*cur_arg + 1], "none") == 0)
newsrv->ssl_ctx.verify = SSL_SOCK_VERIFY_NONE;
else if (strcmp(args[*cur_arg + 1], "required") == 0)
newsrv->ssl_ctx.verify = SSL_SOCK_VERIFY_REQUIRED;
else {
if (err)
memprintf(err, "'%s' : unknown verify method '%s', only 'none' and 'required' are supported\n",
args[*cur_arg], args[*cur_arg + 1]);
return ERR_ALERT | ERR_FATAL;
}
return 0;
}
/* parse the "verifyhost" server keyword */
static int srv_parse_verifyhost(char **args, int *cur_arg, struct proxy *px, struct server *newsrv, char **err)
{
if (!*args[*cur_arg + 1]) {
if (err)
memprintf(err, "'%s' : missing hostname to verify against", args[*cur_arg]);
return ERR_ALERT | ERR_FATAL;
}
newsrv->ssl_ctx.verify_host = strdup(args[*cur_arg + 1]);
return 0;
}
/* parse the "ssl-default-bind-options" keyword in global section */
static int ssl_parse_default_bind_options(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err) {
int i = 1;
if (*(args[i]) == 0) {
memprintf(err, "global statement '%s' expects an option as an argument.", args[0]);
return -1;
}
while (*(args[i])) {
if (!strcmp(args[i], "no-sslv3"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_NO_SSLV3;
else if (!strcmp(args[i], "no-tlsv10"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_NO_TLSV10;
else if (!strcmp(args[i], "no-tlsv11"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_NO_TLSV11;
else if (!strcmp(args[i], "no-tlsv12"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_NO_TLSV12;
else if (!strcmp(args[i], "force-sslv3"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_USE_SSLV3;
else if (!strcmp(args[i], "force-tlsv10"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_USE_TLSV10;
else if (!strcmp(args[i], "force-tlsv11")) {
#if SSL_OP_NO_TLSv1_1
global_ssl.listen_default_ssloptions |= BC_SSL_O_USE_TLSV11;
#else
memprintf(err, "'%s' '%s': library does not support protocol TLSv1.1", args[0], args[i]);
return -1;
#endif
}
else if (!strcmp(args[i], "force-tlsv12")) {
#if SSL_OP_NO_TLSv1_2
global_ssl.listen_default_ssloptions |= BC_SSL_O_USE_TLSV12;
#else
memprintf(err, "'%s' '%s': library does not support protocol TLSv1.2", args[0], args[i]);
return -1;
#endif
}
else if (!strcmp(args[i], "no-tls-tickets"))
global_ssl.listen_default_ssloptions |= BC_SSL_O_NO_TLS_TICKETS;
else {
memprintf(err, "unknown option '%s' on global statement '%s'.", args[i], args[0]);
return -1;
}
i++;
}
return 0;
}
/* parse the "ssl-default-server-options" keyword in global section */
static int ssl_parse_default_server_options(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err) {
int i = 1;
if (*(args[i]) == 0) {
memprintf(err, "global statement '%s' expects an option as an argument.", args[0]);
return -1;
}
while (*(args[i])) {
if (!strcmp(args[i], "no-sslv3"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_NO_SSLV3;
else if (!strcmp(args[i], "no-tlsv10"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_NO_TLSV10;
else if (!strcmp(args[i], "no-tlsv11"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_NO_TLSV11;
else if (!strcmp(args[i], "no-tlsv12"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_NO_TLSV12;
else if (!strcmp(args[i], "force-sslv3"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_USE_SSLV3;
else if (!strcmp(args[i], "force-tlsv10"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_USE_TLSV10;
else if (!strcmp(args[i], "force-tlsv11")) {
#if SSL_OP_NO_TLSv1_1
global_ssl.connect_default_ssloptions |= SRV_SSL_O_USE_TLSV11;
#else
memprintf(err, "'%s' '%s': library does not support protocol TLSv1.1", args[0], args[i]);
return -1;
#endif
}
else if (!strcmp(args[i], "force-tlsv12")) {
#if SSL_OP_NO_TLSv1_2
global_ssl.connect_default_ssloptions |= SRV_SSL_O_USE_TLSV12;
#else
memprintf(err, "'%s' '%s': library does not support protocol TLSv1.2", args[0], args[i]);
return -1;
#endif
}
else if (!strcmp(args[i], "no-tls-tickets"))
global_ssl.connect_default_ssloptions |= SRV_SSL_O_NO_TLS_TICKETS;
else {
memprintf(err, "unknown option '%s' on global statement '%s'.", args[i], args[0]);
return -1;
}
i++;
}
return 0;
}
/* parse the "ca-base" / "crt-base" keywords in global section.
* Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_ca_crt_base(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
char **target;
target = (args[0][1] == 'a') ? &global_ssl.ca_base : &global_ssl.crt_base;
if (too_many_args(1, args, err, NULL))
return -1;
if (*target) {
memprintf(err, "'%s' already specified.", args[0]);
return -1;
}
if (*(args[1]) == 0) {
memprintf(err, "global statement '%s' expects a directory path as an argument.", args[0]);
return -1;
}
*target = strdup(args[1]);
return 0;
}
/* parse the "ssl-default-bind-ciphers" / "ssl-default-server-ciphers" keywords
* in global section. Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_ciphers(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
char **target;
target = (args[0][12] == 'b') ? &global_ssl.listen_default_ciphers : &global_ssl.connect_default_ciphers;
if (too_many_args(1, args, err, NULL))
return -1;
if (*(args[1]) == 0) {
memprintf(err, "global statement '%s' expects a cipher suite as an argument.", args[0]);
return -1;
}
free(*target);
*target = strdup(args[1]);
return 0;
}
/* parse various global tune.ssl settings consisting in positive integers.
* Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_int(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
int *target;
if (strcmp(args[0], "tune.ssl.cachesize") == 0)
target = &global.tune.sslcachesize;
else if (strcmp(args[0], "tune.ssl.maxrecord") == 0)
target = (int *)&global_ssl.max_record;
else if (strcmp(args[0], "tune.ssl.ssl-ctx-cache-size") == 0)
target = &global_ssl.ctx_cache;
else if (strcmp(args[0], "maxsslconn") == 0)
target = &global.maxsslconn;
else {
memprintf(err, "'%s' keyword not unhandled (please report this bug).", args[0]);
return -1;
}
if (too_many_args(1, args, err, NULL))
return -1;
if (*(args[1]) == 0) {
memprintf(err, "'%s' expects an integer argument.", args[0]);
return -1;
}
*target = atoi(args[1]);
if (*target < 0) {
memprintf(err, "'%s' expects a positive numeric value.", args[0]);
return -1;
}
return 0;
}
/* parse "ssl.force-private-cache".
* Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_private_cache(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (too_many_args(0, args, err, NULL))
return -1;
global_ssl.private_cache = 1;
return 0;
}
/* parse "ssl.lifetime".
* Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_lifetime(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
const char *res;
if (too_many_args(1, args, err, NULL))
return -1;
if (*(args[1]) == 0) {
memprintf(err, "'%s' expects ssl sessions <lifetime> in seconds as argument.", args[0]);
return -1;
}
res = parse_time_err(args[1], &global_ssl.life_time, TIME_UNIT_S);
if (res) {
memprintf(err, "unexpected character '%c' in argument to <%s>.", *res, args[0]);
return -1;
}
return 0;
}
#ifndef OPENSSL_NO_DH
/* parse "ssl-dh-param-file".
* Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_dh_param_file(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (too_many_args(1, args, err, NULL))
return -1;
if (*(args[1]) == 0) {
memprintf(err, "'%s' expects a file path as an argument.", args[0]);
return -1;
}
if (ssl_sock_load_global_dh_param_from_file(args[1])) {
memprintf(err, "'%s': unable to load DH parameters from file <%s>.", args[0], args[1]);
return -1;
}
return 0;
}
/* parse "ssl.default-dh-param".
* Returns <0 on alert, >0 on warning, 0 on success.
*/
static int ssl_parse_global_default_dh(char **args, int section_type, struct proxy *curpx,
struct proxy *defpx, const char *file, int line,
char **err)
{
if (too_many_args(1, args, err, NULL))
return -1;
if (*(args[1]) == 0) {
memprintf(err, "'%s' expects an integer argument.", args[0]);
return -1;
}
global_ssl.default_dh_param = atoi(args[1]);
if (global_ssl.default_dh_param < 1024) {
memprintf(err, "'%s' expects a value >= 1024.", args[0]);
return -1;
}
return 0;
}
#endif
/* This function is used with TLS ticket keys management. It permits to browse
* each reference. The variable <getnext> must contain the current node,
* <end> point to the root node.
*/
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
static inline
struct tls_keys_ref *tlskeys_list_get_next(struct tls_keys_ref *getnext, struct list *end)
{
struct tls_keys_ref *ref = getnext;
while (1) {
/* Get next list entry. */
ref = LIST_NEXT(&ref->list, struct tls_keys_ref *, list);
/* If the entry is the last of the list, return NULL. */
if (&ref->list == end)
return NULL;
return ref;
}
}
static inline
struct tls_keys_ref *tlskeys_ref_lookup_ref(const char *reference)
{
int id;
char *error;
/* If the reference starts by a '#', this is numeric id. */
if (reference[0] == '#') {
/* Try to convert the numeric id. If the conversion fails, the lookup fails. */
id = strtol(reference + 1, &error, 10);
if (*error != '\0')
return NULL;
/* Perform the unique id lookup. */
return tlskeys_ref_lookupid(id);
}
/* Perform the string lookup. */
return tlskeys_ref_lookup(reference);
}
#endif
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
static int cli_io_handler_tlskeys_files(struct appctx *appctx);
static inline int cli_io_handler_tlskeys_entries(struct appctx *appctx) {
return cli_io_handler_tlskeys_files(appctx);
}
/* dumps all tls keys. Relies on cli.i0 (non-null = only list file names), cli.i1
* (next index to be dumped), and cli.p0 (next key reference).
*/
static int cli_io_handler_tlskeys_files(struct appctx *appctx) {
struct stream_interface *si = appctx->owner;
switch (appctx->st2) {
case STAT_ST_INIT:
/* Display the column headers. If the message cannot be sent,
* quit the fucntion with returning 0. The function is called
* later and restart at the state "STAT_ST_INIT".
*/
chunk_reset(&trash);
if (appctx->io_handler == cli_io_handler_tlskeys_entries)
chunk_appendf(&trash, "# id secret\n");
else
chunk_appendf(&trash, "# id (file)\n");
if (bi_putchk(si_ic(si), &trash) == -1) {
si_applet_cant_put(si);
return 0;
}
/* Now, we start the browsing of the references lists.
* Note that the following call to LIST_ELEM return bad pointer. The only
* available field of this pointer is <list>. It is used with the function
* tlskeys_list_get_next() for retruning the first available entry
*/
if (appctx->ctx.cli.p0 == NULL) {
appctx->ctx.cli.p0 = LIST_ELEM(&tlskeys_reference, struct tls_keys_ref *, list);
appctx->ctx.cli.p0 = tlskeys_list_get_next(appctx->ctx.cli.p0, &tlskeys_reference);
}
appctx->st2 = STAT_ST_LIST;
/* fall through */
case STAT_ST_LIST:
while (appctx->ctx.cli.p0) {
struct tls_keys_ref *ref = appctx->ctx.cli.p0;
int head = ref->tls_ticket_enc_index;
chunk_reset(&trash);
if (appctx->io_handler == cli_io_handler_tlskeys_entries && appctx->ctx.cli.i1 == 0)
chunk_appendf(&trash, "# ");
if (appctx->ctx.cli.i1 == 0)
chunk_appendf(&trash, "%d (%s)\n", ref->unique_id, ref->filename);
if (appctx->io_handler == cli_io_handler_tlskeys_entries) {
while (appctx->ctx.cli.i1 < TLS_TICKETS_NO) {
struct chunk *t2 = get_trash_chunk();
chunk_reset(t2);
/* should never fail here because we dump only a key in the t2 buffer */
t2->len = a2base64((char *)(ref->tlskeys + (head + 2 + appctx->ctx.cli.i1) % TLS_TICKETS_NO),
sizeof(struct tls_sess_key), t2->str, t2->size);
chunk_appendf(&trash, "%d.%d %s\n", ref->unique_id, appctx->ctx.cli.i1, t2->str);
if (bi_putchk(si_ic(si), &trash) == -1) {
/* let's try again later from this stream. We add ourselves into
* this stream's users so that it can remove us upon termination.
*/
si_applet_cant_put(si);
return 0;
}
appctx->ctx.cli.i1++;
}
appctx->ctx.cli.i1 = 0;
}
if (bi_putchk(si_ic(si), &trash) == -1) {
/* let's try again later from this stream. We add ourselves into
* this stream's users so that it can remove us upon termination.
*/
si_applet_cant_put(si);
return 0;
}
if (appctx->ctx.cli.i0 == 0) /* don't display everything if not necessary */
break;
/* get next list entry and check the end of the list */
appctx->ctx.cli.p0 = tlskeys_list_get_next(appctx->ctx.cli.p0, &tlskeys_reference);
}
appctx->st2 = STAT_ST_FIN;
/* fall through */
default:
appctx->st2 = STAT_ST_FIN;
return 1;
}
return 0;
}
#endif
/* sets cli.i0 to non-zero if only file lists should be dumped */
static int cli_parse_show_tlskeys(char **args, struct appctx *appctx, void *private)
{
/* no parameter, shows only file list */
if (!*args[2]) {
appctx->ctx.cli.i0 = 1;
appctx->io_handler = cli_io_handler_tlskeys_files;
return 0;
}
if (args[2][0] == '*') {
/* list every TLS ticket keys */
appctx->ctx.cli.i0 = 1;
} else {
appctx->ctx.cli.p0 = tlskeys_ref_lookup_ref(args[2]);
if (!appctx->ctx.cli.p0) {
appctx->ctx.cli.msg = "'show tls-keys' unable to locate referenced filename\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
}
appctx->io_handler = cli_io_handler_tlskeys_entries;
return 0;
}
static int cli_parse_set_tlskeys(char **args, struct appctx *appctx, void *private)
{
struct tls_keys_ref *ref;
/* Expect two parameters: the filename and the new new TLS key in encoding */
if (!*args[3] || !*args[4]) {
appctx->ctx.cli.msg = "'set ssl tls-key' expects a filename and the new TLS key in base64 encoding.\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
ref = tlskeys_ref_lookup_ref(args[3]);
if (!ref) {
appctx->ctx.cli.msg = "'set ssl tls-key' unable to locate referenced filename\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
trash.len = base64dec(args[4], strlen(args[4]), trash.str, trash.size);
if (trash.len != sizeof(struct tls_sess_key)) {
appctx->ctx.cli.msg = "'set ssl tls-key' received invalid base64 encoded TLS key.\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
memcpy(ref->tlskeys + ((ref->tls_ticket_enc_index + 2) % TLS_TICKETS_NO), trash.str, trash.len);
ref->tls_ticket_enc_index = (ref->tls_ticket_enc_index + 1) % TLS_TICKETS_NO;
appctx->ctx.cli.msg = "TLS ticket key updated!";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
static int cli_parse_set_ocspresponse(char **args, struct appctx *appctx, void *private)
{
#if (defined SSL_CTRL_SET_TLSEXT_STATUS_REQ_CB && !defined OPENSSL_NO_OCSP)
char *err = NULL;
/* Expect one parameter: the new response in base64 encoding */
if (!*args[3]) {
appctx->ctx.cli.msg = "'set ssl ocsp-response' expects response in base64 encoding.\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
trash.len = base64dec(args[3], strlen(args[3]), trash.str, trash.size);
if (trash.len < 0) {
appctx->ctx.cli.msg = "'set ssl ocsp-response' received invalid base64 encoded response.\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
}
if (ssl_sock_update_ocsp_response(&trash, &err)) {
if (err) {
memprintf(&err, "%s.\n", err);
appctx->ctx.cli.err = err;
appctx->st0 = CLI_ST_PRINT_FREE;
}
return 1;
}
appctx->ctx.cli.msg = "OCSP Response updated!";
appctx->st0 = CLI_ST_PRINT;
return 1;
#else
appctx->ctx.cli.msg = "HAProxy was compiled against a version of OpenSSL that doesn't support OCSP stapling.\n";
appctx->st0 = CLI_ST_PRINT;
return 1;
#endif
}
/* register cli keywords */
static struct cli_kw_list cli_kws = {{ },{
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
{ { "show", "tls-keys", NULL }, "show tls-keys [id|*]: show tls keys references or dump tls ticket keys when id specified", cli_parse_show_tlskeys, NULL },
{ { "set", "ssl", "tls-keys", NULL }, NULL, cli_parse_set_tlskeys, NULL },
{ { "set", "ssl", "ocsp-response", NULL }, NULL, cli_parse_set_ocspresponse, NULL },
#endif
{ { NULL }, NULL, NULL, NULL }
}};
/* Note: must not be declared <const> as its list will be overwritten.
* Please take care of keeping this list alphabetically sorted.
*/
static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
{ "ssl_bc", smp_fetch_ssl_fc, 0, NULL, SMP_T_BOOL, SMP_USE_L5SRV },
{ "ssl_bc_alg_keysize", smp_fetch_ssl_fc_alg_keysize, 0, NULL, SMP_T_SINT, SMP_USE_L5SRV },
{ "ssl_bc_cipher", smp_fetch_ssl_fc_cipher, 0, NULL, SMP_T_STR, SMP_USE_L5SRV },
{ "ssl_bc_protocol", smp_fetch_ssl_fc_protocol, 0, NULL, SMP_T_STR, SMP_USE_L5SRV },
{ "ssl_bc_unique_id", smp_fetch_ssl_fc_unique_id, 0, NULL, SMP_T_BIN, SMP_USE_L5SRV },
{ "ssl_bc_use_keysize", smp_fetch_ssl_fc_use_keysize, 0, NULL, SMP_T_SINT, SMP_USE_L5SRV },
{ "ssl_bc_session_id", smp_fetch_ssl_fc_session_id, 0, NULL, SMP_T_BIN, SMP_USE_L5SRV },
{ "ssl_c_ca_err", smp_fetch_ssl_c_ca_err, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_c_ca_err_depth", smp_fetch_ssl_c_ca_err_depth, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_c_der", smp_fetch_ssl_x_der, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_c_err", smp_fetch_ssl_c_err, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_c_i_dn", smp_fetch_ssl_x_i_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_c_key_alg", smp_fetch_ssl_x_key_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_c_notafter", smp_fetch_ssl_x_notafter, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_c_notbefore", smp_fetch_ssl_x_notbefore, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_c_sig_alg", smp_fetch_ssl_x_sig_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_c_s_dn", smp_fetch_ssl_x_s_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_c_serial", smp_fetch_ssl_x_serial, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_c_sha1", smp_fetch_ssl_x_sha1, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_c_used", smp_fetch_ssl_c_used, 0, NULL, SMP_T_BOOL, SMP_USE_L5CLI },
{ "ssl_c_verify", smp_fetch_ssl_c_verify, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_c_version", smp_fetch_ssl_x_version, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_f_der", smp_fetch_ssl_x_der, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_f_i_dn", smp_fetch_ssl_x_i_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_f_key_alg", smp_fetch_ssl_x_key_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_f_notafter", smp_fetch_ssl_x_notafter, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_f_notbefore", smp_fetch_ssl_x_notbefore, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_f_sig_alg", smp_fetch_ssl_x_sig_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_f_s_dn", smp_fetch_ssl_x_s_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_f_serial", smp_fetch_ssl_x_serial, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_f_sha1", smp_fetch_ssl_x_sha1, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_f_version", smp_fetch_ssl_x_version, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_fc", smp_fetch_ssl_fc, 0, NULL, SMP_T_BOOL, SMP_USE_L5CLI },
{ "ssl_fc_alg_keysize", smp_fetch_ssl_fc_alg_keysize, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_fc_cipher", smp_fetch_ssl_fc_cipher, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_fc_has_crt", smp_fetch_ssl_fc_has_crt, 0, NULL, SMP_T_BOOL, SMP_USE_L5CLI },
{ "ssl_fc_has_sni", smp_fetch_ssl_fc_has_sni, 0, NULL, SMP_T_BOOL, SMP_USE_L5CLI },
{ "ssl_fc_is_resumed", smp_fetch_ssl_fc_is_resumed, 0, NULL, SMP_T_BOOL, SMP_USE_L5CLI },
#ifdef OPENSSL_NPN_NEGOTIATED
{ "ssl_fc_npn", smp_fetch_ssl_fc_npn, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
#endif
#ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
{ "ssl_fc_alpn", smp_fetch_ssl_fc_alpn, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
#endif
{ "ssl_fc_protocol", smp_fetch_ssl_fc_protocol, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ "ssl_fc_unique_id", smp_fetch_ssl_fc_unique_id, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_fc_use_keysize", smp_fetch_ssl_fc_use_keysize, 0, NULL, SMP_T_SINT, SMP_USE_L5CLI },
{ "ssl_fc_session_id", smp_fetch_ssl_fc_session_id, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI },
{ "ssl_fc_sni", smp_fetch_ssl_fc_sni, 0, NULL, SMP_T_STR, SMP_USE_L5CLI },
{ NULL, NULL, 0, 0, 0 },
}};
/* Note: must not be declared <const> as its list will be overwritten.
* Please take care of keeping this list alphabetically sorted.
*/
static struct acl_kw_list acl_kws = {ILH, {
{ "ssl_fc_sni_end", "ssl_fc_sni", PAT_MATCH_END },
{ "ssl_fc_sni_reg", "ssl_fc_sni", PAT_MATCH_REG },
{ /* END */ },
}};
/* Note: must not be declared <const> as its list will be overwritten.
* Please take care of keeping this list alphabetically sorted, doing so helps
* all code contributors.
* Optional keywords are also declared with a NULL ->parse() function so that
* the config parser can report an appropriate error when a known keyword was
* not enabled.
*/
static struct bind_kw_list bind_kws = { "SSL", { }, {
{ "alpn", bind_parse_alpn, 1 }, /* set ALPN supported protocols */
{ "ca-file", bind_parse_ca_file, 1 }, /* set CAfile to process verify on client cert */
{ "ca-ignore-err", bind_parse_ignore_err, 1 }, /* set error IDs to ignore on verify depth > 0 */
{ "ca-sign-file", bind_parse_ca_sign_file, 1 }, /* set CAFile used to generate and sign server certs */
{ "ca-sign-pass", bind_parse_ca_sign_pass, 1 }, /* set CAKey passphrase */
{ "ciphers", bind_parse_ciphers, 1 }, /* set SSL cipher suite */
{ "crl-file", bind_parse_crl_file, 1 }, /* set certificat revocation list file use on client cert verify */
{ "crt", bind_parse_crt, 1 }, /* load SSL certificates from this location */
{ "crt-ignore-err", bind_parse_ignore_err, 1 }, /* set error IDs to ingore on verify depth == 0 */
{ "crt-list", bind_parse_crt_list, 1 }, /* load a list of crt from this location */
{ "ecdhe", bind_parse_ecdhe, 1 }, /* defines named curve for elliptic curve Diffie-Hellman */
{ "force-sslv3", bind_parse_force_sslv3, 0 }, /* force SSLv3 */
{ "force-tlsv10", bind_parse_force_tlsv10, 0 }, /* force TLSv10 */
{ "force-tlsv11", bind_parse_force_tlsv11, 0 }, /* force TLSv11 */
{ "force-tlsv12", bind_parse_force_tlsv12, 0 }, /* force TLSv12 */
{ "generate-certificates", bind_parse_generate_certs, 0 }, /* enable the server certificates generation */
{ "no-sslv3", bind_parse_no_sslv3, 0 }, /* disable SSLv3 */
{ "no-tlsv10", bind_parse_no_tlsv10, 0 }, /* disable TLSv10 */
{ "no-tlsv11", bind_parse_no_tlsv11, 0 }, /* disable TLSv11 */
{ "no-tlsv12", bind_parse_no_tlsv12, 0 }, /* disable TLSv12 */
{ "no-tls-tickets", bind_parse_no_tls_tickets, 0 }, /* disable session resumption tickets */
{ "ssl", bind_parse_ssl, 0 }, /* enable SSL processing */
{ "strict-sni", bind_parse_strict_sni, 0 }, /* refuse negotiation if sni doesn't match a certificate */
{ "tls-ticket-keys", bind_parse_tls_ticket_keys, 1 }, /* set file to load TLS ticket keys from */
{ "verify", bind_parse_verify, 1 }, /* set SSL verify method */
{ "npn", bind_parse_npn, 1 }, /* set NPN supported protocols */
{ NULL, NULL, 0 },
}};
/* Note: must not be declared <const> as its list will be overwritten.
* Please take care of keeping this list alphabetically sorted, doing so helps
* all code contributors.
* Optional keywords are also declared with a NULL ->parse() function so that
* the config parser can report an appropriate error when a known keyword was
* not enabled.
*/
static struct srv_kw_list srv_kws = { "SSL", { }, {
{ "ca-file", srv_parse_ca_file, 1, 0 }, /* set CAfile to process verify server cert */
{ "check-ssl", srv_parse_check_ssl, 0, 0 }, /* enable SSL for health checks */
{ "ciphers", srv_parse_ciphers, 1, 0 }, /* select the cipher suite */
{ "crl-file", srv_parse_crl_file, 1, 0 }, /* set certificate revocation list file use on server cert verify */
{ "crt", srv_parse_crt, 1, 0 }, /* set client certificate */
{ "force-sslv3", srv_parse_force_sslv3, 0, 0 }, /* force SSLv3 */
{ "force-tlsv10", srv_parse_force_tlsv10, 0, 0 }, /* force TLSv10 */
{ "force-tlsv11", srv_parse_force_tlsv11, 0, 0 }, /* force TLSv11 */
{ "force-tlsv12", srv_parse_force_tlsv12, 0, 0 }, /* force TLSv12 */
{ "no-ssl-reuse", srv_parse_no_ssl_reuse, 0, 0 }, /* disable session reuse */
{ "no-sslv3", srv_parse_no_sslv3, 0, 0 }, /* disable SSLv3 */
{ "no-tlsv10", srv_parse_no_tlsv10, 0, 0 }, /* disable TLSv10 */
{ "no-tlsv11", srv_parse_no_tlsv11, 0, 0 }, /* disable TLSv11 */
{ "no-tlsv12", srv_parse_no_tlsv12, 0, 0 }, /* disable TLSv12 */
{ "no-tls-tickets", srv_parse_no_tls_tickets, 0, 0 }, /* disable session resumption tickets */
{ "send-proxy-v2-ssl", srv_parse_send_proxy_ssl, 0, 0 }, /* send PROXY protocol header v2 with SSL info */
{ "send-proxy-v2-ssl-cn", srv_parse_send_proxy_cn, 0, 0 }, /* send PROXY protocol header v2 with CN */
{ "sni", srv_parse_sni, 1, 0 }, /* send SNI extension */
{ "ssl", srv_parse_ssl, 0, 0 }, /* enable SSL processing */
{ "verify", srv_parse_verify, 1, 0 }, /* set SSL verify method */
{ "verifyhost", srv_parse_verifyhost, 1, 0 }, /* require that SSL cert verifies for hostname */
{ NULL, NULL, 0, 0 },
}};
static struct cfg_kw_list cfg_kws = {ILH, {
{ CFG_GLOBAL, "ca-base", ssl_parse_global_ca_crt_base },
{ CFG_GLOBAL, "crt-base", ssl_parse_global_ca_crt_base },
{ CFG_GLOBAL, "maxsslconn", ssl_parse_global_int },
{ CFG_GLOBAL, "ssl-default-bind-options", ssl_parse_default_bind_options },
{ CFG_GLOBAL, "ssl-default-server-options", ssl_parse_default_server_options },
#ifndef OPENSSL_NO_DH
{ CFG_GLOBAL, "ssl-dh-param-file", ssl_parse_global_dh_param_file },
#endif
{ CFG_GLOBAL, "tune.ssl.cachesize", ssl_parse_global_int },
#ifndef OPENSSL_NO_DH
{ CFG_GLOBAL, "tune.ssl.default-dh-param", ssl_parse_global_default_dh },
#endif
{ CFG_GLOBAL, "tune.ssl.force-private-cache", ssl_parse_global_private_cache },
{ CFG_GLOBAL, "tune.ssl.lifetime", ssl_parse_global_lifetime },
{ CFG_GLOBAL, "tune.ssl.maxrecord", ssl_parse_global_int },
{ CFG_GLOBAL, "tune.ssl.ssl-ctx-cache-size", ssl_parse_global_int },
{ CFG_GLOBAL, "ssl-default-bind-ciphers", ssl_parse_global_ciphers },
{ CFG_GLOBAL, "ssl-default-server-ciphers", ssl_parse_global_ciphers },
{ 0, NULL, NULL },
}};
/* transport-layer operations for SSL sockets */
static struct xprt_ops ssl_sock = {
.snd_buf = ssl_sock_from_buf,
.rcv_buf = ssl_sock_to_buf,
.rcv_pipe = NULL,
.snd_pipe = NULL,
.shutr = NULL,
.shutw = ssl_sock_shutw,
.close = ssl_sock_close,
.init = ssl_sock_init,
.prepare_bind_conf = ssl_sock_prepare_bind_conf,
.destroy_bind_conf = ssl_sock_destroy_bind_conf,
.prepare_srv = ssl_sock_prepare_srv_ctx,
.destroy_srv = ssl_sock_free_srv_ctx,
.name = "SSL",
};
#if (OPENSSL_VERSION_NUMBER >= 0x1000200fL && !defined OPENSSL_NO_TLSEXT && !defined OPENSSL_IS_BORINGSSL && !defined LIBRESSL_VERSION_NUMBER)
static void ssl_sock_sctl_free_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx, long argl, void *argp)
{
if (ptr) {
chunk_destroy(ptr);
free(ptr);
}
}
#endif
__attribute__((constructor))
static void __ssl_sock_init(void)
{
char *ptr;
STACK_OF(SSL_COMP)* cm;
if (global_ssl.listen_default_ciphers)
global_ssl.listen_default_ciphers = strdup(global_ssl.listen_default_ciphers);
if (global_ssl.connect_default_ciphers)
global_ssl.connect_default_ciphers = strdup(global_ssl.connect_default_ciphers);
xprt_register(XPRT_SSL, &ssl_sock);
SSL_library_init();
cm = SSL_COMP_get_compression_methods();
sk_SSL_COMP_zero(cm);
#if (OPENSSL_VERSION_NUMBER >= 0x1000200fL && !defined OPENSSL_NO_TLSEXT && !defined OPENSSL_IS_BORINGSSL && !defined LIBRESSL_VERSION_NUMBER)
sctl_ex_index = SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL, ssl_sock_sctl_free_func);
#endif
sample_register_fetches(&sample_fetch_keywords);
acl_register_keywords(&acl_kws);
bind_register_keywords(&bind_kws);
srv_register_keywords(&srv_kws);
cfg_register_keywords(&cfg_kws);
cli_register_kw(&cli_kws);
#if (defined SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB && TLS_TICKETS_NO > 0)
hap_register_post_check(tlskeys_finalize_config);
#endif
ptr = NULL;
memprintf(&ptr, "Built with OpenSSL version : "
#ifdef OPENSSL_IS_BORINGSSL
"BoringSSL\n");
#else /* OPENSSL_IS_BORINGSSL */
OPENSSL_VERSION_TEXT
"\nRunning on OpenSSL version : %s%s",
SSLeay_version(SSLEAY_VERSION),
((OPENSSL_VERSION_NUMBER ^ SSLeay()) >> 8) ? " (VERSIONS DIFFER!)" : "");
#endif
memprintf(&ptr, "%s\nOpenSSL library supports TLS extensions : "
#if OPENSSL_VERSION_NUMBER < 0x00907000L
"no (library version too old)"
#elif defined(OPENSSL_NO_TLSEXT)
"no (disabled via OPENSSL_NO_TLSEXT)"
#else
"yes"
#endif
"", ptr);
memprintf(&ptr, "%s\nOpenSSL library supports SNI : "
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
"yes"
#else
#ifdef OPENSSL_NO_TLSEXT
"no (because of OPENSSL_NO_TLSEXT)"
#else
"no (version might be too old, 0.9.8f min needed)"
#endif
#endif
"", ptr);
memprintf(&ptr, "%s\nOpenSSL library supports prefer-server-ciphers : "
#ifdef SSL_OP_CIPHER_SERVER_PREFERENCE
"yes"
#else
"no (0.9.7 or later needed)"
#endif
"", ptr);
hap_register_build_opts(ptr, 1);
global.ssl_session_max_cost = SSL_SESSION_MAX_COST;
global.ssl_handshake_max_cost = SSL_HANDSHAKE_MAX_COST;
#ifndef OPENSSL_NO_DH
ssl_dh_ptr_index = SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL, NULL);
#endif
/* Load SSL string for the verbose & debug mode. */
ERR_load_SSL_strings();
}
__attribute__((destructor))
static void __ssl_sock_deinit(void)
{
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
lru64_destroy(ssl_ctx_lru_tree);
#endif
#ifndef OPENSSL_NO_DH
if (local_dh_1024) {
DH_free(local_dh_1024);
local_dh_1024 = NULL;
}
if (local_dh_2048) {
DH_free(local_dh_2048);
local_dh_2048 = NULL;
}
if (local_dh_4096) {
DH_free(local_dh_4096);
local_dh_4096 = NULL;
}
if (global_dh) {
DH_free(global_dh);
global_dh = NULL;
}
#endif
ERR_remove_state(0);
ERR_free_strings();
EVP_cleanup();
#if OPENSSL_VERSION_NUMBER >= 0x00907000L
CRYPTO_cleanup_all_ex_data();
#endif
}
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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