/* * SSL/TLS transport layer over SOCK_STREAM sockets * * Copyright (C) 2012 EXCELIANCE, Emeric Brun * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define SSL_SOCK_ST_FL_VERIFY_DONE 0x00000001 /* 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) static int sslconns = 0; void ssl_sock_infocbk(const SSL *ssl, int where, int ret) { struct connection *conn = (struct connection *)SSL_get_app_data(ssl); (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; } } } /* 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 = (struct connection *)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)) { 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)) { ERR_clear_error(); return 1; } conn->err_code = CO_ER_SSL_CRT_FAIL; return 0; } #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 OPENSSL_ALPN_NEGOTIATED /* 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 **data, unsigned int *len, void *arg) { struct bind_conf *conf = arg; *data = (const unsigned char *)conf->alpn_str; *len = conf->alpn_len; return SSL_TLSEXT_ERR_OK; } #endif #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME /* Sets the SSL ctx of 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) { 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) { 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 /* 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; BIO *in; DH *dh = NULL; /* If not present, use parameters generated using 'openssl dhparam 1024 -C': * -----BEGIN DH PARAMETERS----- * MIGHAoGBAJJAJDXDoS5E03MNjnjK36eOL1tRqVa/9NuOVlI+lpXmPjJQbP65EvKn * fSLnG7VMhoCJO4KtG88zf393ltP7loGB2bofcDSr+x+XsxBM8yA/Zj6BmQt+CQ9s * TF7hoOV+wXTT6ErZ5y5qx9pq6hLfKXwTGFT78hrE6HnCO7xgtPdTAgEC * -----END DH PARAMETERS----- */ static const unsigned char dh1024_p[] = { 0x92, 0x40, 0x24, 0x35, 0xC3, 0xA1, 0x2E, 0x44, 0xD3, 0x73, 0x0D, 0x8E, 0x78, 0xCA, 0xDF, 0xA7, 0x8E, 0x2F, 0x5B, 0x51, 0xA9, 0x56, 0xBF, 0xF4, 0xDB, 0x8E, 0x56, 0x52, 0x3E, 0x96, 0x95, 0xE6, 0x3E, 0x32, 0x50, 0x6C, 0xFE, 0xB9, 0x12, 0xF2, 0xA7, 0x7D, 0x22, 0xE7, 0x1B, 0xB5, 0x4C, 0x86, 0x80, 0x89, 0x3B, 0x82, 0xAD, 0x1B, 0xCF, 0x33, 0x7F, 0x7F, 0x77, 0x96, 0xD3, 0xFB, 0x96, 0x81, 0x81, 0xD9, 0xBA, 0x1F, 0x70, 0x34, 0xAB, 0xFB, 0x1F, 0x97, 0xB3, 0x10, 0x4C, 0xF3, 0x20, 0x3F, 0x66, 0x3E, 0x81, 0x99, 0x0B, 0x7E, 0x09, 0x0F, 0x6C, 0x4C, 0x5E, 0xE1, 0xA0, 0xE5, 0x7E, 0xC1, 0x74, 0xD3, 0xE8, 0x4A, 0xD9, 0xE7, 0x2E, 0x6A, 0xC7, 0xDA, 0x6A, 0xEA, 0x12, 0xDF, 0x29, 0x7C, 0x13, 0x18, 0x54, 0xFB, 0xF2, 0x1A, 0xC4, 0xE8, 0x79, 0xC2, 0x3B, 0xBC, 0x60, 0xB4, 0xF7, 0x53, }; static const unsigned char dh1024_g[] = { 0x02, }; in = BIO_new(BIO_s_file()); if (in == NULL) goto end; if (BIO_read_filename(in, file) <= 0) goto end; dh = PEM_read_bio_DHparams(in, NULL, ctx->default_passwd_callback, ctx->default_passwd_callback_userdata); if (!dh) { /* Clear openssl global errors stack */ ERR_clear_error(); dh = DH_new(); if (dh == NULL) goto end; dh->p = BN_bin2bn(dh1024_p, sizeof(dh1024_p), NULL); if (dh->p == NULL) goto end; dh->g = BN_bin2bn(dh1024_g, sizeof(dh1024_g), NULL); if (dh->g == NULL) goto end; ret = 0; /* DH params not found */ } else ret = 1; SSL_CTX_set_tmp_dh(ctx, dh); end: if (dh) DH_free(dh); if (in) BIO_free(in); 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; 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); sc = malloc(sizeof(struct sni_ctx) + len + 1); for (j = 0; j < len; j++) sc->name.key[j] = tolower(name[j]); sc->name.key[len] = 0; 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; } /* 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; #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; x = PEM_read_bio_X509_AUX(in, NULL, ctx->default_passwd_callback, ctx->default_passwd_callback_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); if (ASN1_STRING_to_UTF8((unsigned char **)&str, entry->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; if (ctx->extra_certs != NULL) { sk_X509_pop_free(ctx->extra_certs, X509_free); ctx->extra_certs = NULL; } while ((ca = PEM_read_bio_X509(in, NULL, ctx->default_passwd_callback, ctx->default_passwd_callback_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, struct proxy *curproxy, 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 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 #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, struct proxy *curproxy, char **err) { struct dirent *de; DIR *dir; struct stat buf; char *end; char fp[MAXPATHLEN+1]; int cfgerr = 0; if (!(dir = opendir(path))) return ssl_sock_load_cert_file(path, bind_conf, curproxy, NULL, 0, err); /* strip trailing slashes, including first one */ for (end = path + strlen(path) - 1; end >= path && *end == '/'; end--) *end = 0; while ((de = readdir(dir))) { 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++; continue; } if (!S_ISREG(buf.st_mode)) continue; cfgerr += ssl_sock_load_cert_file(fp, bind_conf, curproxy, NULL, 0, err); } closedir(dir); 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, struct proxy *curproxy, char **err) { char thisline[LINESIZE]; FILE *f; 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 + 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) { 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; cfgerr = ssl_sock_load_cert_file(args[0], bind_conf, curproxy, &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 int ssl_sock_prepare_ctx(struct bind_conf *bind_conf, SSL_CTX *ctx, struct proxy *curproxy) { int cfgerr = 0; int 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; int sslmode = SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER | SSL_MODE_RELEASE_BUFFERS; /* 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) SSL_CTX_set_ssl_version(ctx, SSLv3_server_method()); 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); SSL_CTX_set_verify(ctx, bind_conf->verify ? bind_conf->verify : SSL_VERIFY_NONE, ssl_sock_bind_verifycbk); if (bind_conf->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)); } #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->ca_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 (global.tune.ssllifetime) SSL_CTX_set_timeout(ctx, global.tune.ssllifetime); 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++; } SSL_CTX_set_info_callback(ctx, ssl_sock_infocbk); #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 OPENSSL_ALPN_NEGOTIATED if (bind_conf->alpn_str) SSL_CTX_set_alpn_advertised_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 = (struct connection *)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); if (ASN1_STRING_to_UTF8((unsigned char **)&str, entry->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) { int cfgerr = 0; int options = SSL_OP_ALL | /* all known workarounds for bugs */ SSL_OP_NO_SSLv2 | SSL_OP_NO_COMPRESSION; int mode = SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER | SSL_MODE_RELEASE_BUFFERS; /* Make sure openssl opens /dev/urandom before the chroot */ if (!ssl_initialize_random()) { Alert("OpenSSL random data generator initialization failed.\n"); cfgerr++; } /* 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_common.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) SSL_CTX_set_ssl_version(srv->ssl_ctx.ctx, SSLv3_client_method()); 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); SSL_CTX_set_verify(srv->ssl_ctx.ctx, srv->ssl_ctx.verify ? srv->ssl_ctx.verify : SSL_VERIFY_NONE, srv->ssl_ctx.verify_host ? ssl_sock_srv_verifycbk : NULL); if (srv->ssl_ctx.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++; } } #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.tune.ssllifetime) SSL_CTX_set_timeout(srv->ssl_ctx.ctx, global.tune.ssllifetime); 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 proxy *px) { struct ebmb_node *node; struct sni_ctx *sni; int err = 0; if (!bind_conf || !bind_conf->is_ssl) return 0; node = ebmb_first(&bind_conf->sni_ctx); while (node) { sni = ebmb_entry(node, struct sni_ctx, name); if (!sni->order) /* only initialize the CTX on its first occurrence */ err += ssl_sock_prepare_ctx(bind_conf, sni->ctx, px); 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) /* only initialize the CTX on its first occurrence */ err += ssl_sock_prepare_ctx(bind_conf, sni->ctx, px); node = ebmb_next(node); } return err; } /* 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; } /* * 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->flags & CO_FL_CTRL_READY)) 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)) { /* Alloc a new SSL session ctx */ conn->xprt_ctx = SSL_new(objt_server(conn->target)->ssl_ctx.ctx); if (!conn->xprt_ctx) { 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) SSL_set_session(conn->xprt_ctx, objt_server(conn->target)->ssl_ctx.reused_sess); /* set fd on SSL session context */ SSL_set_fd(conn->xprt_ctx, conn->t.sock.fd); /* set connection pointer */ SSL_set_app_data(conn->xprt_ctx, conn); /* leave init state and start handshake */ conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN; sslconns++; return 0; } else if (objt_listener(conn->target)) { /* Alloc a new SSL session ctx */ conn->xprt_ctx = SSL_new(objt_listener(conn->target)->bind_conf->default_ctx); if (!conn->xprt_ctx) { conn->err_code = CO_ER_SSL_NO_MEM; return -1; } SSL_set_accept_state(conn->xprt_ctx); /* set fd on SSL session context */ SSL_set_fd(conn->xprt_ctx, conn->t.sock.fd); /* set connection pointer */ SSL_set_app_data(conn->xprt_ctx, conn); /* leave init state and start handshake */ conn->flags |= CO_FL_SSL_WAIT_HS | CO_FL_WAIT_L6_CONN; sslconns++; 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 by the caller). */ int ssl_sock_handshake(struct connection *conn, unsigned int flag) { int ret; if (!(conn->flags & CO_FL_CTRL_READY)) 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_poll_send(conn); 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_poll_recv(conn); 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) { if (!((SSL *)conn->xprt_ctx)->packet_length) if (!errno) conn->err_code = CO_ER_SSL_EMPTY; else conn->err_code = CO_ER_SSL_ABORT; 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. */ if ((conn->flags & CO_FL_CTRL_READY) && conn->ctrl && conn->ctrl->drain) conn->ctrl->drain(conn->t.sock.fd); if (!conn->err_code) conn->err_code = 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_poll_send(conn); 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_poll_recv(conn); 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 (!((SSL *)conn->xprt_ctx)->packet_length) if (!errno) conn->err_code = CO_ER_SSL_EMPTY; else conn->err_code = CO_ER_SSL_ABORT; 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. */ if ((conn->flags & CO_FL_CTRL_READY) && conn->ctrl && conn->ctrl->drain) conn->ctrl->drain(conn->t.sock.fd); if (!conn->err_code) conn->err_code = CO_ER_SSL_HANDSHAKE; goto out_error; } } reneg_ok: /* Handshake succeeded */ if (objt_server(conn->target)) { if (!SSL_session_reused(conn->xprt_ctx)) { /* 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 = SSL_get1_session(conn->xprt_ctx); } } /* 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 */ 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 bytes from connection 's socket and store them * into buffer . 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 */ 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 */ __conn_data_poll_recv(conn); 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 */ ERR_clear_error(); conn->flags |= CO_FL_ERROR; return done; } /* Send all pending bytes from buffer to connection 's socket. * may contain MSG_MORE to make the system hold on without sending * data too fast, 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 (global.tune.ssl_max_record && try > global.tune.ssl_max_record) try = global.tune.ssl_max_record; 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) { 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 */ __conn_data_poll_send(conn); 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 */ 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; /* no handshake was in progress, try a clean ssl shutdown */ if (clean && (SSL_shutdown(conn->xprt_ctx) <= 0)) { /* Clear openssl global errors stack */ ERR_clear_error(); } /* force flag on ssl to keep session in cache regardless shutdown result */ SSL_set_shutdown(conn->xprt_ctx, SSL_SENT_SHUTDOWN); } /* 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; } /* 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; int i, j, n; int cur = 0; const char *s; char tmp[128]; out->len = 0; for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) { if (pos < 0) j = (sk_X509_NAME_ENTRY_num(a->entries)-1) - i; else j = i; ne = sk_X509_NAME_ENTRY_value(a->entries, j); n = OBJ_obj2nid(ne->object); if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) { i2t_ASN1_OBJECT(tmp, sizeof(tmp), ne->object); s = tmp; } if (chunk_strcasecmp(entry, s) != 0) continue; if (pos < 0) cur--; else cur++; if (cur != pos) continue; if (ne->value->length > out->size) return -1; memcpy(out->str, ne->value->data, ne->value->length); out->len = ne->value->length; 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; int i, n, ln; int l = 0; const char *s; char *p; char tmp[128]; out->len = 0; p = out->str; for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) { ne = sk_X509_NAME_ENTRY_value(a->entries, i); n = OBJ_obj2nid(ne->object); if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) { i2t_ASN1_OBJECT(tmp, sizeof(tmp), ne->object); s = tmp; } ln = strlen(s); l += 1 + ln + 1 + ne->value->length; if (l > out->size) return -1; out->len = l; *(p++)='/'; memcpy(p, s, ln); p += ln; *(p++)='='; memcpy(p, ne->value->data, ne->value->length); p += ne->value->length; } if (!out->len) return 0; return 1; } /***** 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(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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->type = SMP_T_BOOL; smp->data.uint = SSL_SOCK_ST_FL_VERIFY_DONE & conn->xprt_st ? 1 : 0; return 1; } /* bin, returns serial in a binary chunk */ static int smp_fetch_ssl_c_serial(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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, it increase X509 * ref count */ crt = SSL_get_peer_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.str = *smp_trash; smp->type = SMP_T_BIN; ret = 1; out: if (crt) X509_free(crt); return ret; } /* bin, returns the client certificate's SHA-1 fingerprint (SHA-1 hash of DER-encoded certificate) in a binary chunk */ static int smp_fetch_ssl_c_sha1(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; const EVP_MD *digest; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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, it increase X509 * ref count */ crt = SSL_get_peer_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.str = *smp_trash; smp->type = SMP_T_BIN; ret = 1; out: if (crt) X509_free(crt); return ret; } /*str, returns notafter date in ASN1_UTCTIME format */ static int smp_fetch_ssl_c_notafter(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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, it increase X509 * ref count */ crt = SSL_get_peer_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.str = *smp_trash; smp->type = SMP_T_STR; ret = 1; out: if (crt) X509_free(crt); return ret; } /* str, returns a string of a formatted full dn \C=..\O=..\OU=.. \CN=.. */ static int smp_fetch_ssl_c_i_dn(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; X509_NAME *name; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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, it increase X509 * ref count */ crt = SSL_get_peer_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; else if (args[1].type == ARGT_UINT) pos =(int)args[1].data.uint; 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->type = SMP_T_STR; smp->data.str = *smp_trash; ret = 1; out: if (crt) X509_free(crt); return ret; } /*str, returns notbefore date in ASN1_UTCTIME format */ static int smp_fetch_ssl_c_notbefore(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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, it increase X509 * ref count */ crt = SSL_get_peer_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.str = *smp_trash; smp->type = SMP_T_STR; ret = 1; out: if (crt) X509_free(crt); return ret; } /* str, returns a string of a formatted full dn \C=..\O=..\OU=.. \CN=.. */ static int smp_fetch_ssl_c_s_dn(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; X509_NAME *name; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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, 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; 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; else if (args[1].type == ARGT_UINT) pos =(int)args[1].data.uint; 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->type = SMP_T_STR; smp->data.str = *smp_trash; ret = 1; out: if (crt) X509_free(crt); return ret; } /* integer, returns true if current session use a client certificate */ static int smp_fetch_ssl_c_used(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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->type = SMP_T_BOOL; smp->data.uint = (crt != NULL); return 1; } /* integer, returns the client certificate version */ static int smp_fetch_ssl_c_version(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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) return 0; smp->data.uint = (unsigned int)(1 + X509_get_version(crt)); X509_free(crt); smp->type = SMP_T_UINT; return 1; } /* str, returns the client certificate sig alg */ static int smp_fetch_ssl_c_sig_alg(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; int nid; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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 increase X509 * ref count */ crt = SSL_get_peer_certificate(conn->xprt_ctx); if (!crt) return 0; nid = OBJ_obj2nid((ASN1_OBJECT *)(crt->cert_info->signature->algorithm)); smp->data.str.str = (char *)OBJ_nid2sn(nid); if (!smp->data.str.str) { X509_free(crt); return 0; } smp->type = SMP_T_CSTR; smp->data.str.len = strlen(smp->data.str.str); X509_free(crt); return 1; } /* str, returns the client certificate key alg */ static int smp_fetch_ssl_c_key_alg(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; int nid; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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 increase X509 * ref count */ crt = SSL_get_peer_certificate(conn->xprt_ctx); if (!crt) return 0; nid = OBJ_obj2nid((ASN1_OBJECT *)(crt->cert_info->key->algor->algorithm)); smp->data.str.str = (char *)OBJ_nid2sn(nid); if (!smp->data.str.str) { X509_free(crt); return 0; } smp->type = SMP_T_CSTR; smp->data.str.len = strlen(smp->data.str.str); X509_free(crt); return 1; } /* boolean, returns true if front conn. transport layer is SSL */ static int smp_fetch_ssl_fc(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn = objt_conn(l4->si[0].end); smp->type = SMP_T_BOOL; smp->data.uint = (conn && conn->xprt == &ssl_sock); return 1; } /* boolean, returns true if client present a SNI */ static int smp_fetch_ssl_fc_has_sni(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME struct connection *conn = objt_conn(l4->si[0].end); smp->type = SMP_T_BOOL; smp->data.uint = (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 } /* bin, returns serial in a binary chunk */ static int smp_fetch_ssl_f_serial(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } 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.str = *smp_trash; smp->type = SMP_T_BIN; ret = 1; out: return ret; } /*str, returns notafter date in ASN1_UTCTIME format */ static int smp_fetch_ssl_f_notafter(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } 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.str = *smp_trash; smp->type = SMP_T_STR; ret = 1; out: return ret; } /*str, returns notbefore date in ASN1_UTCTIME format */ static int smp_fetch_ssl_f_notbefore(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } 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.str = *smp_trash; smp->type = SMP_T_STR; ret = 1; out: return ret; } /* integer, returns the frontend certificate version */ static int smp_fetch_ssl_f_version(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } /* SSL_get_certificate returns a ptr on an SSL * internal sub struct */ crt = SSL_get_certificate(conn->xprt_ctx); if (!crt) return 0; smp->data.uint = (unsigned int)(1 + X509_get_version(crt)); smp->type = SMP_T_UINT; return 1; } /* str, returns the client certificate sig alg */ static int smp_fetch_ssl_f_sig_alg(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; int nid; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } crt = SSL_get_certificate(conn->xprt_ctx); if (!crt) return 0; nid = OBJ_obj2nid((ASN1_OBJECT *)(crt->cert_info->signature->algorithm)); smp->data.str.str = (char *)OBJ_nid2sn(nid); if (!smp->data.str.str) return 0; smp->type = SMP_T_CSTR; smp->data.str.len = strlen(smp->data.str.str); return 1; } /* str, returns the client certificate key alg */ static int smp_fetch_ssl_f_key_alg(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt; int nid; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } crt = SSL_get_certificate(conn->xprt_ctx); if (!crt) return 0; nid = OBJ_obj2nid((ASN1_OBJECT *)(crt->cert_info->key->algor->algorithm)); smp->data.str.str = (char *)OBJ_nid2sn(nid); if (!smp->data.str.str) return 0; smp->type = SMP_T_CSTR; smp->data.str.len = strlen(smp->data.str.str); return 1; } /* str, returns a string of a formatted full dn \C=..\O=..\OU=.. \CN=.. */ static int smp_fetch_ssl_f_i_dn(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; X509_NAME *name; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags |= SMP_F_MAY_CHANGE; return 0; } 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; else if (args[1].type == ARGT_UINT) pos =(int)args[1].data.uint; 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->type = SMP_T_STR; smp->data.str = *smp_trash; ret = 1; out: return ret; } /* str, returns a string of a formatted full dn \C=..\O=..\OU=.. \CN=.. */ static int smp_fetch_ssl_f_s_dn(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { X509 *crt = NULL; X509_NAME *name; int ret = 0; struct chunk *smp_trash; struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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; } 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; else if (args[1].type == ARGT_UINT) pos =(int)args[1].data.uint; 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->type = SMP_T_STR; smp->data.str = *smp_trash; ret = 1; out: return ret; } static int smp_fetch_ssl_fc_cipher(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; smp->flags = 0; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; smp->data.str.str = (char *)SSL_get_cipher_name(conn->xprt_ctx); if (!smp->data.str.str) return 0; smp->type = SMP_T_CSTR; smp->data.str.len = strlen(smp->data.str.str); return 1; } static int smp_fetch_ssl_fc_alg_keysize(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; smp->flags = 0; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; if (!SSL_get_cipher_bits(conn->xprt_ctx, (int *)&smp->data.uint)) return 0; smp->type = SMP_T_UINT; return 1; } static int smp_fetch_ssl_fc_use_keysize(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; smp->flags = 0; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; smp->data.uint = (unsigned int)SSL_get_cipher_bits(conn->xprt_ctx, NULL); if (!smp->data.uint) return 0; smp->type = SMP_T_UINT; return 1; } #ifdef OPENSSL_NPN_NEGOTIATED static int smp_fetch_ssl_fc_npn(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; smp->flags = 0; smp->type = SMP_T_CSTR; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; smp->data.str.str = NULL; SSL_get0_next_proto_negotiated(conn->xprt_ctx, (const unsigned char **)&smp->data.str.str, (unsigned *)&smp->data.str.len); if (!smp->data.str.str) return 0; return 1; } #endif #ifdef OPENSSL_ALPN_NEGOTIATED static int smp_fetch_ssl_fc_alpn(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; smp->flags = 0; smp->type = SMP_T_CSTR; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; smp->data.str.str = NULL; SSL_get0_alpn_negotiated(conn->xprt_ctx, (const unsigned char **)&smp->data.str.str, (unsigned *)&smp->data.str.len); if (!smp->data.str.str) return 0; return 1; } #endif static int smp_fetch_ssl_fc_protocol(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; smp->flags = 0; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; smp->data.str.str = (char *)SSL_get_version(conn->xprt_ctx); if (!smp->data.str.str) return 0; smp->type = SMP_T_CSTR; smp->data.str.len = strlen(smp->data.str.str); return 1; } static int smp_fetch_ssl_fc_session_id(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { #if OPENSSL_VERSION_NUMBER > 0x0090800fL SSL_SESSION *sess; struct connection *conn; smp->flags = 0; smp->type = SMP_T_CBIN; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; sess = SSL_get_session(conn->xprt_ctx); if (!sess) return 0; smp->data.str.str = (char *)SSL_SESSION_get_id(sess, (unsigned int *)&smp->data.str.len); if (!smp->data.str.str || !&smp->data.str.len) return 0; return 1; #else return 0; #endif } static int smp_fetch_ssl_fc_sni(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME struct connection *conn; smp->flags = 0; smp->type = SMP_T_CSTR; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || !conn->xprt_ctx || conn->xprt != &ssl_sock) return 0; smp->data.str.str = (char *)SSL_get_servername(conn->xprt_ctx, TLSEXT_NAMETYPE_host_name); if (!smp->data.str.str) return 0; smp->data.str.len = strlen(smp->data.str.str); 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(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags = SMP_F_MAY_CHANGE; return 0; } smp->type = SMP_T_UINT; smp->data.uint = (unsigned 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(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags = SMP_F_MAY_CHANGE; return 0; } smp->type = SMP_T_UINT; smp->data.uint = (unsigned 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(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); if (!conn || conn->xprt != &ssl_sock) return 0; if (!(conn->flags & CO_FL_CONNECTED)) { smp->flags = SMP_F_MAY_CHANGE; return 0; } smp->type = SMP_T_UINT; smp->data.uint = (unsigned 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(struct proxy *px, struct session *l4, void *l7, unsigned int opt, const struct arg *args, struct sample *smp, const char *kw) { struct connection *conn; if (!l4) return 0; conn = objt_conn(l4->si[0].end); 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->type = SMP_T_UINT; smp->data.uint = (unsigned 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.ca_base) memprintf(&conf->ca_file, "%s/%s", global.ca_base, args[cur_arg + 1]); else memprintf(&conf->ca_file, "%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.crt_base) { if ((strlen(global.crt_base) + 1 + strlen(args[cur_arg + 1]) + 1) > MAXPATHLEN) { memprintf(err, "'%s' : path too long", args[cur_arg]); return ERR_ALERT | ERR_FATAL; } sprintf(path, "%s/%s", global.crt_base, args[cur_arg + 1]); if (ssl_sock_load_cert(path, conf, px, err) > 0) return ERR_ALERT | ERR_FATAL; return 0; } if (ssl_sock_load_cert(args[cur_arg + 1], conf, px, 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, px, 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.ca_base) memprintf(&conf->crl_file, "%s/%s", global.ca_base, args[cur_arg + 1]); else memprintf(&conf->crl_file, "%s", args[cur_arg + 1]); return 0; #endif } /* parse the "ecdhe" bind keyword keywords */ 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_ignerr" and "ca_ignerr" 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 ( )* */ conf->npn_len = strlen(args[cur_arg + 1]) + 1; conf->npn_str = calloc(1, conf->npn_len); 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 OPENSSL_ALPN_NEGOTIATED 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 ( )* */ conf->alpn_len = strlen(args[cur_arg + 1]) + 1; conf->alpn_str = calloc(1, conf->alpn_len); 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) { struct listener *l; conf->is_ssl = 1; if (global.listen_default_ciphers && !conf->ciphers) conf->ciphers = strdup(global.listen_default_ciphers); list_for_each_entry(l, &conf->listeners, by_bind) l->xprt = &ssl_sock; 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 "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_VERIFY_NONE; else if (strcmp(args[cur_arg + 1], "optional") == 0) conf->verify = SSL_VERIFY_PEER; else if (strcmp(args[cur_arg + 1], "required") == 0) conf->verify = SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT; 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.ca_base) memprintf(&newsrv->ssl_ctx.ca_file, "%s/%s", global.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.connect_default_ciphers && !newsrv->ssl_ctx.ciphers) newsrv->ssl_ctx.ciphers = strdup(global.connect_default_ciphers); 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.ca_base) memprintf(&newsrv->ssl_ctx.crl_file, "%s/%s", global.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.crt_base) memprintf(&newsrv->ssl_ctx.client_crt, "%s/%s", global.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-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 "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.connect_default_ciphers && !newsrv->ssl_ctx.ciphers) newsrv->ssl_ctx.ciphers = strdup(global.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_VERIFY_NONE; else if (strcmp(args[*cur_arg + 1], "required") == 0) newsrv->ssl_ctx.verify = SSL_VERIFY_PEER; 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; } /* Note: must not be declared 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_c_ca_err", smp_fetch_ssl_c_ca_err, 0, NULL, SMP_T_UINT, SMP_USE_L5CLI }, { "ssl_c_ca_err_depth", smp_fetch_ssl_c_ca_err_depth, 0, NULL, SMP_T_UINT, SMP_USE_L5CLI }, { "ssl_c_err", smp_fetch_ssl_c_err, 0, NULL, SMP_T_UINT, SMP_USE_L5CLI }, { "ssl_c_i_dn", smp_fetch_ssl_c_i_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_c_key_alg", smp_fetch_ssl_c_key_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_c_notafter", smp_fetch_ssl_c_notafter, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_c_notbefore", smp_fetch_ssl_c_notbefore, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_c_sig_alg", smp_fetch_ssl_c_sig_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_c_s_dn", smp_fetch_ssl_c_s_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_c_serial", smp_fetch_ssl_c_serial, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI }, { "ssl_c_sha1", smp_fetch_ssl_c_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_UINT, SMP_USE_L5CLI }, { "ssl_c_version", smp_fetch_ssl_c_version, 0, NULL, SMP_T_UINT, SMP_USE_L5CLI }, { "ssl_f_i_dn", smp_fetch_ssl_f_i_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_f_key_alg", smp_fetch_ssl_f_key_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_f_notafter", smp_fetch_ssl_f_notafter, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_f_notbefore", smp_fetch_ssl_f_notbefore, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_f_sig_alg", smp_fetch_ssl_f_sig_alg, 0, NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_f_s_dn", smp_fetch_ssl_f_s_dn, ARG2(0,STR,SINT), NULL, SMP_T_STR, SMP_USE_L5CLI }, { "ssl_f_serial", smp_fetch_ssl_f_serial, 0, NULL, SMP_T_BIN, SMP_USE_L5CLI }, { "ssl_f_version", smp_fetch_ssl_f_version, 0, NULL, SMP_T_UINT, 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_UINT, SMP_USE_L5CLI }, { "ssl_fc_cipher", smp_fetch_ssl_fc_cipher, 0, NULL, SMP_T_CSTR, 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 }, #ifdef OPENSSL_NPN_NEGOTIATED { "ssl_fc_npn", smp_fetch_ssl_fc_npn, 0, NULL, SMP_T_CSTR, SMP_USE_L5CLI }, #endif #ifdef OPENSSL_ALPN_NEGOTIATED { "ssl_fc_alpn", smp_fetch_ssl_fc_alpn, 0, NULL, SMP_T_CSTR, SMP_USE_L5CLI }, #endif { "ssl_fc_protocol", smp_fetch_ssl_fc_protocol, 0, NULL, SMP_T_CSTR, SMP_USE_L5CLI }, { "ssl_fc_use_keysize", smp_fetch_ssl_fc_use_keysize, 0, NULL, SMP_T_UINT, SMP_USE_L5CLI }, { "ssl_fc_session_id", smp_fetch_ssl_fc_session_id, 0, NULL, SMP_T_CBIN, SMP_USE_L5CLI }, { "ssl_fc_sni", smp_fetch_ssl_fc_sni, 0, NULL, SMP_T_CSTR, SMP_USE_L5CLI }, { NULL, NULL, 0, 0, 0 }, }}; /* Note: must not be declared as its list will be overwritten. * Please take care of keeping this list alphabetically sorted. */ static struct acl_kw_list acl_kws = {ILH, { { "ssl_c_i_dn", NULL, pat_parse_str, pat_match_str }, { "ssl_c_key_alg", NULL, pat_parse_str, pat_match_str }, { "ssl_c_notafter", NULL, pat_parse_str, pat_match_str }, { "ssl_c_notbefore", NULL, pat_parse_str, pat_match_str }, { "ssl_c_sig_alg", NULL, pat_parse_str, pat_match_str }, { "ssl_c_s_dn", NULL, pat_parse_str, pat_match_str }, { "ssl_c_serial", NULL, pat_parse_bin, pat_match_bin }, { "ssl_f_i_dn", NULL, pat_parse_str, pat_match_str }, { "ssl_f_key_alg", NULL, pat_parse_str, pat_match_str }, { "ssl_f_notafter", NULL, pat_parse_str, pat_match_str }, { "ssl_f_notbefore", NULL, pat_parse_str, pat_match_str }, { "ssl_f_sig_alg", NULL, pat_parse_str, pat_match_str }, { "ssl_f_s_dn", NULL, pat_parse_str, pat_match_str }, { "ssl_f_serial", NULL, pat_parse_bin, pat_match_bin }, { "ssl_fc_cipher", NULL, pat_parse_str, pat_match_str }, #ifdef OPENSSL_NPN_NEGOTIATED { "ssl_fc_npn", NULL, pat_parse_str, pat_match_str }, #endif #ifdef OPENSSL_ALPN_NEGOTIATED { "ssl_fc_alpn", NULL, pat_parse_str, pat_match_str }, #endif { "ssl_fc_protocol", NULL, pat_parse_str, pat_match_str }, { "ssl_fc_sni", "ssl_fc_sni", pat_parse_str, pat_match_str }, { "ssl_fc_sni_end", "ssl_fc_sni", pat_parse_str, pat_match_end }, { "ssl_fc_sni_reg", "ssl_fc_sni", pat_parse_reg, pat_match_reg }, { /* END */ }, }}; /* Note: must not be declared 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 */ { "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 */ { "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 */ { "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 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-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 */ { "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 }, }}; /* transport-layer operations for SSL sockets */ 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, }; __attribute__((constructor)) static void __ssl_sock_init(void) { STACK_OF(SSL_COMP)* cm; SSL_library_init(); cm = SSL_COMP_get_compression_methods(); sk_SSL_COMP_zero(cm); sample_register_fetches(&sample_fetch_keywords); acl_register_keywords(&acl_kws); bind_register_keywords(&bind_kws); srv_register_keywords(&srv_kws); } /* * Local variables: * c-indent-level: 8 * c-basic-offset: 8 * End: */