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3baa4cdd19
Do not show rsa1 key type in usage when compiled without SSH1 support. Upstream-ID: 068b5c41357a02f319957746fa4e84ea73960f57
2769 lines
73 KiB
C
2769 lines
73 KiB
C
/* $OpenBSD: ssh-keygen.c,v 1.295 2017/02/17 02:32:05 dtucker Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Identity and host key generation and maintenance.
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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*/
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#include "includes.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#ifdef WITH_OPENSSL
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#include <openssl/evp.h>
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#include <openssl/pem.h>
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#include "openbsd-compat/openssl-compat.h"
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#endif
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#ifdef HAVE_PATHS_H
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# include <paths.h>
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#endif
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#include <pwd.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <limits.h>
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#include <locale.h>
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#include "xmalloc.h"
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#include "sshkey.h"
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#include "rsa.h"
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#include "authfile.h"
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#include "uuencode.h"
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#include "sshbuf.h"
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#include "pathnames.h"
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#include "log.h"
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#include "misc.h"
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#include "match.h"
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#include "hostfile.h"
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#include "dns.h"
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#include "ssh.h"
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#include "ssh2.h"
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#include "ssherr.h"
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#include "ssh-pkcs11.h"
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#include "atomicio.h"
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#include "krl.h"
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#include "digest.h"
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#include "utf8.h"
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#ifdef WITH_OPENSSL
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# define DEFAULT_KEY_TYPE_NAME "rsa"
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#else
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# define DEFAULT_KEY_TYPE_NAME "ed25519"
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#endif
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/* Number of bits in the RSA/DSA key. This value can be set on the command line. */
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#define DEFAULT_BITS 2048
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#define DEFAULT_BITS_DSA 1024
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#define DEFAULT_BITS_ECDSA 256
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u_int32_t bits = 0;
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/*
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* Flag indicating that we just want to change the passphrase. This can be
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* set on the command line.
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*/
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int change_passphrase = 0;
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/*
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* Flag indicating that we just want to change the comment. This can be set
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* on the command line.
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*/
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int change_comment = 0;
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int quiet = 0;
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int log_level = SYSLOG_LEVEL_INFO;
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/* Flag indicating that we want to hash a known_hosts file */
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int hash_hosts = 0;
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/* Flag indicating that we want lookup a host in known_hosts file */
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int find_host = 0;
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/* Flag indicating that we want to delete a host from a known_hosts file */
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int delete_host = 0;
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/* Flag indicating that we want to show the contents of a certificate */
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int show_cert = 0;
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/* Flag indicating that we just want to see the key fingerprint */
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int print_fingerprint = 0;
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int print_bubblebabble = 0;
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/* Hash algorithm to use for fingerprints. */
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int fingerprint_hash = SSH_FP_HASH_DEFAULT;
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/* The identity file name, given on the command line or entered by the user. */
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char identity_file[1024];
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int have_identity = 0;
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/* This is set to the passphrase if given on the command line. */
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char *identity_passphrase = NULL;
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/* This is set to the new passphrase if given on the command line. */
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char *identity_new_passphrase = NULL;
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/* This is set to the new comment if given on the command line. */
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char *identity_comment = NULL;
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/* Path to CA key when certifying keys. */
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char *ca_key_path = NULL;
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/* Certificate serial number */
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unsigned long long cert_serial = 0;
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/* Key type when certifying */
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u_int cert_key_type = SSH2_CERT_TYPE_USER;
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/* "key ID" of signed key */
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char *cert_key_id = NULL;
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/* Comma-separated list of principal names for certifying keys */
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char *cert_principals = NULL;
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/* Validity period for certificates */
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u_int64_t cert_valid_from = 0;
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u_int64_t cert_valid_to = ~0ULL;
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/* Certificate options */
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#define CERTOPT_X_FWD (1)
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#define CERTOPT_AGENT_FWD (1<<1)
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#define CERTOPT_PORT_FWD (1<<2)
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#define CERTOPT_PTY (1<<3)
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#define CERTOPT_USER_RC (1<<4)
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#define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \
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CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC)
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u_int32_t certflags_flags = CERTOPT_DEFAULT;
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char *certflags_command = NULL;
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char *certflags_src_addr = NULL;
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/* Conversion to/from various formats */
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int convert_to = 0;
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int convert_from = 0;
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enum {
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FMT_RFC4716,
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FMT_PKCS8,
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FMT_PEM
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} convert_format = FMT_RFC4716;
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int print_public = 0;
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int print_generic = 0;
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char *key_type_name = NULL;
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/* Load key from this PKCS#11 provider */
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char *pkcs11provider = NULL;
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/* Use new OpenSSH private key format when writing SSH2 keys instead of PEM */
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int use_new_format = 0;
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/* Cipher for new-format private keys */
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char *new_format_cipher = NULL;
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/*
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* Number of KDF rounds to derive new format keys /
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* number of primality trials when screening moduli.
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*/
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int rounds = 0;
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/* argv0 */
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extern char *__progname;
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char hostname[NI_MAXHOST];
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#ifdef WITH_OPENSSL
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/* moduli.c */
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int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *);
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int prime_test(FILE *, FILE *, u_int32_t, u_int32_t, char *, unsigned long,
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unsigned long);
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#endif
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static void
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type_bits_valid(int type, const char *name, u_int32_t *bitsp)
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{
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#ifdef WITH_OPENSSL
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u_int maxbits, nid;
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#endif
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if (type == KEY_UNSPEC)
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fatal("unknown key type %s", key_type_name);
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if (*bitsp == 0) {
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#ifdef WITH_OPENSSL
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if (type == KEY_DSA)
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*bitsp = DEFAULT_BITS_DSA;
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else if (type == KEY_ECDSA) {
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if (name != NULL &&
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(nid = sshkey_ecdsa_nid_from_name(name)) > 0)
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*bitsp = sshkey_curve_nid_to_bits(nid);
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if (*bitsp == 0)
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*bitsp = DEFAULT_BITS_ECDSA;
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} else
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#endif
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*bitsp = DEFAULT_BITS;
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}
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#ifdef WITH_OPENSSL
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maxbits = (type == KEY_DSA) ?
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OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS;
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if (*bitsp > maxbits)
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fatal("key bits exceeds maximum %d", maxbits);
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if (type == KEY_DSA && *bitsp != 1024)
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fatal("DSA keys must be 1024 bits");
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else if (type != KEY_ECDSA && type != KEY_ED25519 && *bitsp < 1024)
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fatal("Key must at least be 1024 bits");
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else if (type == KEY_ECDSA && sshkey_ecdsa_bits_to_nid(*bitsp) == -1)
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fatal("Invalid ECDSA key length - valid lengths are "
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"256, 384 or 521 bits");
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#endif
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}
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static void
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ask_filename(struct passwd *pw, const char *prompt)
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{
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char buf[1024];
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char *name = NULL;
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if (key_type_name == NULL)
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name = _PATH_SSH_CLIENT_ID_RSA;
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else {
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switch (sshkey_type_from_name(key_type_name)) {
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case KEY_RSA1:
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name = _PATH_SSH_CLIENT_IDENTITY;
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break;
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case KEY_DSA_CERT:
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case KEY_DSA:
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name = _PATH_SSH_CLIENT_ID_DSA;
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break;
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#ifdef OPENSSL_HAS_ECC
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case KEY_ECDSA_CERT:
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case KEY_ECDSA:
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name = _PATH_SSH_CLIENT_ID_ECDSA;
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break;
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#endif
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case KEY_RSA_CERT:
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case KEY_RSA:
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name = _PATH_SSH_CLIENT_ID_RSA;
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break;
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case KEY_ED25519:
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case KEY_ED25519_CERT:
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name = _PATH_SSH_CLIENT_ID_ED25519;
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break;
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default:
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fatal("bad key type");
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}
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}
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snprintf(identity_file, sizeof(identity_file),
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"%s/%s", pw->pw_dir, name);
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printf("%s (%s): ", prompt, identity_file);
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fflush(stdout);
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if (fgets(buf, sizeof(buf), stdin) == NULL)
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exit(1);
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buf[strcspn(buf, "\n")] = '\0';
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if (strcmp(buf, "") != 0)
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strlcpy(identity_file, buf, sizeof(identity_file));
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have_identity = 1;
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}
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static struct sshkey *
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load_identity(char *filename)
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{
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char *pass;
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struct sshkey *prv;
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int r;
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if ((r = sshkey_load_private(filename, "", &prv, NULL)) == 0)
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return prv;
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if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
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fatal("Load key \"%s\": %s", filename, ssh_err(r));
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if (identity_passphrase)
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pass = xstrdup(identity_passphrase);
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else
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pass = read_passphrase("Enter passphrase: ", RP_ALLOW_STDIN);
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r = sshkey_load_private(filename, pass, &prv, NULL);
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explicit_bzero(pass, strlen(pass));
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free(pass);
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if (r != 0)
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fatal("Load key \"%s\": %s", filename, ssh_err(r));
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return prv;
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}
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#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----"
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#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----"
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#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
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#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb
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#ifdef WITH_OPENSSL
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static void
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do_convert_to_ssh2(struct passwd *pw, struct sshkey *k)
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{
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size_t len;
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u_char *blob;
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char comment[61];
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int r;
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if (k->type == KEY_RSA1)
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fatal("version 1 keys are not supported");
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if ((r = sshkey_to_blob(k, &blob, &len)) != 0)
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fatal("key_to_blob failed: %s", ssh_err(r));
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/* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */
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snprintf(comment, sizeof(comment),
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"%u-bit %s, converted by %s@%s from OpenSSH",
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sshkey_size(k), sshkey_type(k),
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pw->pw_name, hostname);
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fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN);
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fprintf(stdout, "Comment: \"%s\"\n", comment);
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dump_base64(stdout, blob, len);
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fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END);
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sshkey_free(k);
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free(blob);
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exit(0);
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}
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static void
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do_convert_to_pkcs8(struct sshkey *k)
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{
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switch (sshkey_type_plain(k->type)) {
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case KEY_RSA1:
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case KEY_RSA:
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if (!PEM_write_RSA_PUBKEY(stdout, k->rsa))
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fatal("PEM_write_RSA_PUBKEY failed");
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break;
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case KEY_DSA:
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if (!PEM_write_DSA_PUBKEY(stdout, k->dsa))
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fatal("PEM_write_DSA_PUBKEY failed");
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break;
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#ifdef OPENSSL_HAS_ECC
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case KEY_ECDSA:
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if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa))
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fatal("PEM_write_EC_PUBKEY failed");
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break;
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#endif
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default:
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fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
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}
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exit(0);
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}
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static void
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do_convert_to_pem(struct sshkey *k)
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{
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switch (sshkey_type_plain(k->type)) {
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case KEY_RSA1:
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case KEY_RSA:
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if (!PEM_write_RSAPublicKey(stdout, k->rsa))
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fatal("PEM_write_RSAPublicKey failed");
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break;
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#if notyet /* OpenSSH 0.9.8 lacks this function */
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case KEY_DSA:
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if (!PEM_write_DSAPublicKey(stdout, k->dsa))
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fatal("PEM_write_DSAPublicKey failed");
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break;
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#endif
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/* XXX ECDSA? */
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default:
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fatal("%s: unsupported key type %s", __func__, sshkey_type(k));
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}
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exit(0);
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}
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static void
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do_convert_to(struct passwd *pw)
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{
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struct sshkey *k;
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struct stat st;
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int r;
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if (!have_identity)
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ask_filename(pw, "Enter file in which the key is");
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if (stat(identity_file, &st) < 0)
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fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
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if ((r = sshkey_load_public(identity_file, &k, NULL)) != 0)
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k = load_identity(identity_file);
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switch (convert_format) {
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case FMT_RFC4716:
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do_convert_to_ssh2(pw, k);
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break;
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case FMT_PKCS8:
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do_convert_to_pkcs8(k);
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break;
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case FMT_PEM:
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do_convert_to_pem(k);
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break;
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default:
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fatal("%s: unknown key format %d", __func__, convert_format);
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}
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exit(0);
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}
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/*
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* This is almost exactly the bignum1 encoding, but with 32 bit for length
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* instead of 16.
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*/
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static void
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buffer_get_bignum_bits(struct sshbuf *b, BIGNUM *value)
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{
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u_int bytes, bignum_bits;
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int r;
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if ((r = sshbuf_get_u32(b, &bignum_bits)) != 0)
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fatal("%s: buffer error: %s", __func__, ssh_err(r));
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bytes = (bignum_bits + 7) / 8;
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if (sshbuf_len(b) < bytes)
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fatal("%s: input buffer too small: need %d have %zu",
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__func__, bytes, sshbuf_len(b));
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if (BN_bin2bn(sshbuf_ptr(b), bytes, value) == NULL)
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fatal("%s: BN_bin2bn failed", __func__);
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if ((r = sshbuf_consume(b, bytes)) != 0)
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fatal("%s: buffer error: %s", __func__, ssh_err(r));
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}
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static struct sshkey *
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do_convert_private_ssh2_from_blob(u_char *blob, u_int blen)
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{
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struct sshbuf *b;
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struct sshkey *key = NULL;
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char *type, *cipher;
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u_char e1, e2, e3, *sig = NULL, data[] = "abcde12345";
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int r, rlen, ktype;
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u_int magic, i1, i2, i3, i4;
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size_t slen;
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u_long e;
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if ((b = sshbuf_from(blob, blen)) == NULL)
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fatal("%s: sshbuf_from failed", __func__);
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if ((r = sshbuf_get_u32(b, &magic)) != 0)
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fatal("%s: buffer error: %s", __func__, ssh_err(r));
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if (magic != SSH_COM_PRIVATE_KEY_MAGIC) {
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error("bad magic 0x%x != 0x%x", magic,
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SSH_COM_PRIVATE_KEY_MAGIC);
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sshbuf_free(b);
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return NULL;
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}
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if ((r = sshbuf_get_u32(b, &i1)) != 0 ||
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(r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
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(r = sshbuf_get_cstring(b, &cipher, NULL)) != 0 ||
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(r = sshbuf_get_u32(b, &i2)) != 0 ||
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(r = sshbuf_get_u32(b, &i3)) != 0 ||
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(r = sshbuf_get_u32(b, &i4)) != 0)
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fatal("%s: buffer error: %s", __func__, ssh_err(r));
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debug("ignore (%d %d %d %d)", i1, i2, i3, i4);
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if (strcmp(cipher, "none") != 0) {
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error("unsupported cipher %s", cipher);
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free(cipher);
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sshbuf_free(b);
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free(type);
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return NULL;
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}
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free(cipher);
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if (strstr(type, "dsa")) {
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ktype = KEY_DSA;
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} else if (strstr(type, "rsa")) {
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ktype = KEY_RSA;
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} else {
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sshbuf_free(b);
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free(type);
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return NULL;
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}
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if ((key = sshkey_new_private(ktype)) == NULL)
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fatal("key_new_private failed");
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free(type);
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switch (key->type) {
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case KEY_DSA:
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buffer_get_bignum_bits(b, key->dsa->p);
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buffer_get_bignum_bits(b, key->dsa->g);
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buffer_get_bignum_bits(b, key->dsa->q);
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buffer_get_bignum_bits(b, key->dsa->pub_key);
|
|
buffer_get_bignum_bits(b, key->dsa->priv_key);
|
|
break;
|
|
case KEY_RSA:
|
|
if ((r = sshbuf_get_u8(b, &e1)) != 0 ||
|
|
(e1 < 30 && (r = sshbuf_get_u8(b, &e2)) != 0) ||
|
|
(e1 < 30 && (r = sshbuf_get_u8(b, &e3)) != 0))
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r));
|
|
e = e1;
|
|
debug("e %lx", e);
|
|
if (e < 30) {
|
|
e <<= 8;
|
|
e += e2;
|
|
debug("e %lx", e);
|
|
e <<= 8;
|
|
e += e3;
|
|
debug("e %lx", e);
|
|
}
|
|
if (!BN_set_word(key->rsa->e, e)) {
|
|
sshbuf_free(b);
|
|
sshkey_free(key);
|
|
return NULL;
|
|
}
|
|
buffer_get_bignum_bits(b, key->rsa->d);
|
|
buffer_get_bignum_bits(b, key->rsa->n);
|
|
buffer_get_bignum_bits(b, key->rsa->iqmp);
|
|
buffer_get_bignum_bits(b, key->rsa->q);
|
|
buffer_get_bignum_bits(b, key->rsa->p);
|
|
if ((r = rsa_generate_additional_parameters(key->rsa)) != 0)
|
|
fatal("generate RSA parameters failed: %s", ssh_err(r));
|
|
break;
|
|
}
|
|
rlen = sshbuf_len(b);
|
|
if (rlen != 0)
|
|
error("do_convert_private_ssh2_from_blob: "
|
|
"remaining bytes in key blob %d", rlen);
|
|
sshbuf_free(b);
|
|
|
|
/* try the key */
|
|
if (sshkey_sign(key, &sig, &slen, data, sizeof(data), NULL, 0) != 0 ||
|
|
sshkey_verify(key, sig, slen, data, sizeof(data), 0) != 0) {
|
|
sshkey_free(key);
|
|
free(sig);
|
|
return NULL;
|
|
}
|
|
free(sig);
|
|
return key;
|
|
}
|
|
|
|
static int
|
|
get_line(FILE *fp, char *line, size_t len)
|
|
{
|
|
int c;
|
|
size_t pos = 0;
|
|
|
|
line[0] = '\0';
|
|
while ((c = fgetc(fp)) != EOF) {
|
|
if (pos >= len - 1)
|
|
fatal("input line too long.");
|
|
switch (c) {
|
|
case '\r':
|
|
c = fgetc(fp);
|
|
if (c != EOF && c != '\n' && ungetc(c, fp) == EOF)
|
|
fatal("unget: %s", strerror(errno));
|
|
return pos;
|
|
case '\n':
|
|
return pos;
|
|
}
|
|
line[pos++] = c;
|
|
line[pos] = '\0';
|
|
}
|
|
/* We reached EOF */
|
|
return -1;
|
|
}
|
|
|
|
static void
|
|
do_convert_from_ssh2(struct passwd *pw, struct sshkey **k, int *private)
|
|
{
|
|
int r, blen, escaped = 0;
|
|
u_int len;
|
|
char line[1024];
|
|
u_char blob[8096];
|
|
char encoded[8096];
|
|
FILE *fp;
|
|
|
|
if ((fp = fopen(identity_file, "r")) == NULL)
|
|
fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
|
|
encoded[0] = '\0';
|
|
while ((blen = get_line(fp, line, sizeof(line))) != -1) {
|
|
if (blen > 0 && line[blen - 1] == '\\')
|
|
escaped++;
|
|
if (strncmp(line, "----", 4) == 0 ||
|
|
strstr(line, ": ") != NULL) {
|
|
if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL)
|
|
*private = 1;
|
|
if (strstr(line, " END ") != NULL) {
|
|
break;
|
|
}
|
|
/* fprintf(stderr, "ignore: %s", line); */
|
|
continue;
|
|
}
|
|
if (escaped) {
|
|
escaped--;
|
|
/* fprintf(stderr, "escaped: %s", line); */
|
|
continue;
|
|
}
|
|
strlcat(encoded, line, sizeof(encoded));
|
|
}
|
|
len = strlen(encoded);
|
|
if (((len % 4) == 3) &&
|
|
(encoded[len-1] == '=') &&
|
|
(encoded[len-2] == '=') &&
|
|
(encoded[len-3] == '='))
|
|
encoded[len-3] = '\0';
|
|
blen = uudecode(encoded, blob, sizeof(blob));
|
|
if (blen < 0)
|
|
fatal("uudecode failed.");
|
|
if (*private)
|
|
*k = do_convert_private_ssh2_from_blob(blob, blen);
|
|
else if ((r = sshkey_from_blob(blob, blen, k)) != 0)
|
|
fatal("decode blob failed: %s", ssh_err(r));
|
|
fclose(fp);
|
|
}
|
|
|
|
static void
|
|
do_convert_from_pkcs8(struct sshkey **k, int *private)
|
|
{
|
|
EVP_PKEY *pubkey;
|
|
FILE *fp;
|
|
|
|
if ((fp = fopen(identity_file, "r")) == NULL)
|
|
fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
|
|
if ((pubkey = PEM_read_PUBKEY(fp, NULL, NULL, NULL)) == NULL) {
|
|
fatal("%s: %s is not a recognised public key format", __func__,
|
|
identity_file);
|
|
}
|
|
fclose(fp);
|
|
switch (EVP_PKEY_type(pubkey->type)) {
|
|
case EVP_PKEY_RSA:
|
|
if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
(*k)->type = KEY_RSA;
|
|
(*k)->rsa = EVP_PKEY_get1_RSA(pubkey);
|
|
break;
|
|
case EVP_PKEY_DSA:
|
|
if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
(*k)->type = KEY_DSA;
|
|
(*k)->dsa = EVP_PKEY_get1_DSA(pubkey);
|
|
break;
|
|
#ifdef OPENSSL_HAS_ECC
|
|
case EVP_PKEY_EC:
|
|
if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
(*k)->type = KEY_ECDSA;
|
|
(*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey);
|
|
(*k)->ecdsa_nid = sshkey_ecdsa_key_to_nid((*k)->ecdsa);
|
|
break;
|
|
#endif
|
|
default:
|
|
fatal("%s: unsupported pubkey type %d", __func__,
|
|
EVP_PKEY_type(pubkey->type));
|
|
}
|
|
EVP_PKEY_free(pubkey);
|
|
return;
|
|
}
|
|
|
|
static void
|
|
do_convert_from_pem(struct sshkey **k, int *private)
|
|
{
|
|
FILE *fp;
|
|
RSA *rsa;
|
|
#ifdef notyet
|
|
DSA *dsa;
|
|
#endif
|
|
|
|
if ((fp = fopen(identity_file, "r")) == NULL)
|
|
fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
|
|
if ((rsa = PEM_read_RSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
|
|
if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
(*k)->type = KEY_RSA;
|
|
(*k)->rsa = rsa;
|
|
fclose(fp);
|
|
return;
|
|
}
|
|
#if notyet /* OpenSSH 0.9.8 lacks this function */
|
|
rewind(fp);
|
|
if ((dsa = PEM_read_DSAPublicKey(fp, NULL, NULL, NULL)) != NULL) {
|
|
if ((*k = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
(*k)->type = KEY_DSA;
|
|
(*k)->dsa = dsa;
|
|
fclose(fp);
|
|
return;
|
|
}
|
|
/* XXX ECDSA */
|
|
#endif
|
|
fatal("%s: unrecognised raw private key format", __func__);
|
|
}
|
|
|
|
static void
|
|
do_convert_from(struct passwd *pw)
|
|
{
|
|
struct sshkey *k = NULL;
|
|
int r, private = 0, ok = 0;
|
|
struct stat st;
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which the key is");
|
|
if (stat(identity_file, &st) < 0)
|
|
fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
|
|
|
|
switch (convert_format) {
|
|
case FMT_RFC4716:
|
|
do_convert_from_ssh2(pw, &k, &private);
|
|
break;
|
|
case FMT_PKCS8:
|
|
do_convert_from_pkcs8(&k, &private);
|
|
break;
|
|
case FMT_PEM:
|
|
do_convert_from_pem(&k, &private);
|
|
break;
|
|
default:
|
|
fatal("%s: unknown key format %d", __func__, convert_format);
|
|
}
|
|
|
|
if (!private) {
|
|
if ((r = sshkey_write(k, stdout)) == 0)
|
|
ok = 1;
|
|
if (ok)
|
|
fprintf(stdout, "\n");
|
|
} else {
|
|
switch (k->type) {
|
|
case KEY_DSA:
|
|
ok = PEM_write_DSAPrivateKey(stdout, k->dsa, NULL,
|
|
NULL, 0, NULL, NULL);
|
|
break;
|
|
#ifdef OPENSSL_HAS_ECC
|
|
case KEY_ECDSA:
|
|
ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, NULL,
|
|
NULL, 0, NULL, NULL);
|
|
break;
|
|
#endif
|
|
case KEY_RSA:
|
|
ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL,
|
|
NULL, 0, NULL, NULL);
|
|
break;
|
|
default:
|
|
fatal("%s: unsupported key type %s", __func__,
|
|
sshkey_type(k));
|
|
}
|
|
}
|
|
|
|
if (!ok)
|
|
fatal("key write failed");
|
|
sshkey_free(k);
|
|
exit(0);
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
do_print_public(struct passwd *pw)
|
|
{
|
|
struct sshkey *prv;
|
|
struct stat st;
|
|
int r;
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which the key is");
|
|
if (stat(identity_file, &st) < 0)
|
|
fatal("%s: %s", identity_file, strerror(errno));
|
|
prv = load_identity(identity_file);
|
|
if ((r = sshkey_write(prv, stdout)) != 0)
|
|
error("key_write failed: %s", ssh_err(r));
|
|
sshkey_free(prv);
|
|
fprintf(stdout, "\n");
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
do_download(struct passwd *pw)
|
|
{
|
|
#ifdef ENABLE_PKCS11
|
|
struct sshkey **keys = NULL;
|
|
int i, nkeys;
|
|
enum sshkey_fp_rep rep;
|
|
int fptype;
|
|
char *fp, *ra;
|
|
|
|
fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
|
|
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
|
|
|
|
pkcs11_init(0);
|
|
nkeys = pkcs11_add_provider(pkcs11provider, NULL, &keys);
|
|
if (nkeys <= 0)
|
|
fatal("cannot read public key from pkcs11");
|
|
for (i = 0; i < nkeys; i++) {
|
|
if (print_fingerprint) {
|
|
fp = sshkey_fingerprint(keys[i], fptype, rep);
|
|
ra = sshkey_fingerprint(keys[i], fingerprint_hash,
|
|
SSH_FP_RANDOMART);
|
|
if (fp == NULL || ra == NULL)
|
|
fatal("%s: sshkey_fingerprint fail", __func__);
|
|
printf("%u %s %s (PKCS11 key)\n", sshkey_size(keys[i]),
|
|
fp, sshkey_type(keys[i]));
|
|
if (log_level >= SYSLOG_LEVEL_VERBOSE)
|
|
printf("%s\n", ra);
|
|
free(ra);
|
|
free(fp);
|
|
} else {
|
|
(void) sshkey_write(keys[i], stdout); /* XXX check */
|
|
fprintf(stdout, "\n");
|
|
}
|
|
sshkey_free(keys[i]);
|
|
}
|
|
free(keys);
|
|
pkcs11_terminate();
|
|
exit(0);
|
|
#else
|
|
fatal("no pkcs11 support");
|
|
#endif /* ENABLE_PKCS11 */
|
|
}
|
|
|
|
static struct sshkey *
|
|
try_read_key(char **cpp)
|
|
{
|
|
struct sshkey *ret;
|
|
int r;
|
|
|
|
if ((ret = sshkey_new(KEY_RSA1)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
/* Try RSA1 */
|
|
if ((r = sshkey_read(ret, cpp)) == 0)
|
|
return ret;
|
|
/* Try modern */
|
|
sshkey_free(ret);
|
|
if ((ret = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("sshkey_new failed");
|
|
if ((r = sshkey_read(ret, cpp)) == 0)
|
|
return ret;
|
|
/* Not a key */
|
|
sshkey_free(ret);
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
fingerprint_one_key(const struct sshkey *public, const char *comment)
|
|
{
|
|
char *fp = NULL, *ra = NULL;
|
|
enum sshkey_fp_rep rep;
|
|
int fptype;
|
|
|
|
fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
|
|
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
|
|
fp = sshkey_fingerprint(public, fptype, rep);
|
|
ra = sshkey_fingerprint(public, fingerprint_hash, SSH_FP_RANDOMART);
|
|
if (fp == NULL || ra == NULL)
|
|
fatal("%s: sshkey_fingerprint failed", __func__);
|
|
mprintf("%u %s %s (%s)\n", sshkey_size(public), fp,
|
|
comment ? comment : "no comment", sshkey_type(public));
|
|
if (log_level >= SYSLOG_LEVEL_VERBOSE)
|
|
printf("%s\n", ra);
|
|
free(ra);
|
|
free(fp);
|
|
}
|
|
|
|
static void
|
|
fingerprint_private(const char *path)
|
|
{
|
|
struct stat st;
|
|
char *comment = NULL;
|
|
struct sshkey *public = NULL;
|
|
int r;
|
|
|
|
if (stat(identity_file, &st) < 0)
|
|
fatal("%s: %s", path, strerror(errno));
|
|
if ((r = sshkey_load_public(path, &public, &comment)) != 0) {
|
|
debug("load public \"%s\": %s", path, ssh_err(r));
|
|
if ((r = sshkey_load_private(path, NULL,
|
|
&public, &comment)) != 0) {
|
|
debug("load private \"%s\": %s", path, ssh_err(r));
|
|
fatal("%s is not a key file.", path);
|
|
}
|
|
}
|
|
|
|
fingerprint_one_key(public, comment);
|
|
sshkey_free(public);
|
|
free(comment);
|
|
}
|
|
|
|
static void
|
|
do_fingerprint(struct passwd *pw)
|
|
{
|
|
FILE *f;
|
|
struct sshkey *public = NULL;
|
|
char *comment = NULL, *cp, *ep, line[SSH_MAX_PUBKEY_BYTES];
|
|
int i, invalid = 1;
|
|
const char *path;
|
|
u_long lnum = 0;
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which the key is");
|
|
path = identity_file;
|
|
|
|
if (strcmp(identity_file, "-") == 0) {
|
|
f = stdin;
|
|
path = "(stdin)";
|
|
} else if ((f = fopen(path, "r")) == NULL)
|
|
fatal("%s: %s: %s", __progname, path, strerror(errno));
|
|
|
|
while (read_keyfile_line(f, path, line, sizeof(line), &lnum) == 0) {
|
|
cp = line;
|
|
cp[strcspn(cp, "\n")] = '\0';
|
|
/* Trim leading space and comments */
|
|
cp = line + strspn(line, " \t");
|
|
if (*cp == '#' || *cp == '\0')
|
|
continue;
|
|
|
|
/*
|
|
* Input may be plain keys, private keys, authorized_keys
|
|
* or known_hosts.
|
|
*/
|
|
|
|
/*
|
|
* Try private keys first. Assume a key is private if
|
|
* "SSH PRIVATE KEY" appears on the first line and we're
|
|
* not reading from stdin (XXX support private keys on stdin).
|
|
*/
|
|
if (lnum == 1 && strcmp(identity_file, "-") != 0 &&
|
|
strstr(cp, "PRIVATE KEY") != NULL) {
|
|
fclose(f);
|
|
fingerprint_private(path);
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* If it's not a private key, then this must be prepared to
|
|
* accept a public key prefixed with a hostname or options.
|
|
* Try a bare key first, otherwise skip the leading stuff.
|
|
*/
|
|
if ((public = try_read_key(&cp)) == NULL) {
|
|
i = strtol(cp, &ep, 10);
|
|
if (i == 0 || ep == NULL ||
|
|
(*ep != ' ' && *ep != '\t')) {
|
|
int quoted = 0;
|
|
|
|
comment = cp;
|
|
for (; *cp && (quoted || (*cp != ' ' &&
|
|
*cp != '\t')); cp++) {
|
|
if (*cp == '\\' && cp[1] == '"')
|
|
cp++; /* Skip both */
|
|
else if (*cp == '"')
|
|
quoted = !quoted;
|
|
}
|
|
if (!*cp)
|
|
continue;
|
|
*cp++ = '\0';
|
|
}
|
|
}
|
|
/* Retry after parsing leading hostname/key options */
|
|
if (public == NULL && (public = try_read_key(&cp)) == NULL) {
|
|
debug("%s:%lu: not a public key", path, lnum);
|
|
continue;
|
|
}
|
|
|
|
/* Find trailing comment, if any */
|
|
for (; *cp == ' ' || *cp == '\t'; cp++)
|
|
;
|
|
if (*cp != '\0' && *cp != '#')
|
|
comment = cp;
|
|
|
|
fingerprint_one_key(public, comment);
|
|
sshkey_free(public);
|
|
invalid = 0; /* One good key in the file is sufficient */
|
|
}
|
|
fclose(f);
|
|
|
|
if (invalid)
|
|
fatal("%s is not a public key file.", path);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
do_gen_all_hostkeys(struct passwd *pw)
|
|
{
|
|
struct {
|
|
char *key_type;
|
|
char *key_type_display;
|
|
char *path;
|
|
} key_types[] = {
|
|
#ifdef WITH_OPENSSL
|
|
#ifdef WITH_SSH1
|
|
{ "rsa1", "RSA1", _PATH_HOST_KEY_FILE },
|
|
#endif /* WITH_SSH1 */
|
|
{ "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE },
|
|
{ "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE },
|
|
#ifdef OPENSSL_HAS_ECC
|
|
{ "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE },
|
|
#endif /* OPENSSL_HAS_ECC */
|
|
#endif /* WITH_OPENSSL */
|
|
{ "ed25519", "ED25519",_PATH_HOST_ED25519_KEY_FILE },
|
|
{ NULL, NULL, NULL }
|
|
};
|
|
|
|
int first = 0;
|
|
struct stat st;
|
|
struct sshkey *private, *public;
|
|
char comment[1024];
|
|
int i, type, fd, r;
|
|
FILE *f;
|
|
|
|
for (i = 0; key_types[i].key_type; i++) {
|
|
if (stat(key_types[i].path, &st) == 0)
|
|
continue;
|
|
if (errno != ENOENT) {
|
|
error("Could not stat %s: %s", key_types[i].path,
|
|
strerror(errno));
|
|
first = 0;
|
|
continue;
|
|
}
|
|
|
|
if (first == 0) {
|
|
first = 1;
|
|
printf("%s: generating new host keys: ", __progname);
|
|
}
|
|
printf("%s ", key_types[i].key_type_display);
|
|
fflush(stdout);
|
|
type = sshkey_type_from_name(key_types[i].key_type);
|
|
strlcpy(identity_file, key_types[i].path, sizeof(identity_file));
|
|
bits = 0;
|
|
type_bits_valid(type, NULL, &bits);
|
|
if ((r = sshkey_generate(type, bits, &private)) != 0) {
|
|
error("key_generate failed: %s", ssh_err(r));
|
|
first = 0;
|
|
continue;
|
|
}
|
|
if ((r = sshkey_from_private(private, &public)) != 0)
|
|
fatal("sshkey_from_private failed: %s", ssh_err(r));
|
|
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name,
|
|
hostname);
|
|
if ((r = sshkey_save_private(private, identity_file, "",
|
|
comment, use_new_format, new_format_cipher, rounds)) != 0) {
|
|
error("Saving key \"%s\" failed: %s",
|
|
identity_file, ssh_err(r));
|
|
sshkey_free(private);
|
|
sshkey_free(public);
|
|
first = 0;
|
|
continue;
|
|
}
|
|
sshkey_free(private);
|
|
strlcat(identity_file, ".pub", sizeof(identity_file));
|
|
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
|
if (fd == -1) {
|
|
error("Could not save your public key in %s",
|
|
identity_file);
|
|
sshkey_free(public);
|
|
first = 0;
|
|
continue;
|
|
}
|
|
f = fdopen(fd, "w");
|
|
if (f == NULL) {
|
|
error("fdopen %s failed", identity_file);
|
|
close(fd);
|
|
sshkey_free(public);
|
|
first = 0;
|
|
continue;
|
|
}
|
|
if ((r = sshkey_write(public, f)) != 0) {
|
|
error("write key failed: %s", ssh_err(r));
|
|
fclose(f);
|
|
sshkey_free(public);
|
|
first = 0;
|
|
continue;
|
|
}
|
|
fprintf(f, " %s\n", comment);
|
|
fclose(f);
|
|
sshkey_free(public);
|
|
|
|
}
|
|
if (first != 0)
|
|
printf("\n");
|
|
}
|
|
|
|
struct known_hosts_ctx {
|
|
const char *host; /* Hostname searched for in find/delete case */
|
|
FILE *out; /* Output file, stdout for find_hosts case */
|
|
int has_unhashed; /* When hashing, original had unhashed hosts */
|
|
int found_key; /* For find/delete, host was found */
|
|
int invalid; /* File contained invalid items; don't delete */
|
|
};
|
|
|
|
static int
|
|
known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
|
|
{
|
|
struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
|
|
char *hashed, *cp, *hosts, *ohosts;
|
|
int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
|
|
|
|
switch (l->status) {
|
|
case HKF_STATUS_OK:
|
|
case HKF_STATUS_MATCHED:
|
|
/*
|
|
* Don't hash hosts already already hashed, with wildcard
|
|
* characters or a CA/revocation marker.
|
|
*/
|
|
if ((l->match & HKF_MATCH_HOST_HASHED) != 0 ||
|
|
has_wild || l->marker != MRK_NONE) {
|
|
fprintf(ctx->out, "%s\n", l->line);
|
|
if (has_wild && !find_host) {
|
|
logit("%s:%ld: ignoring host name "
|
|
"with wildcard: %.64s", l->path,
|
|
l->linenum, l->hosts);
|
|
}
|
|
return 0;
|
|
}
|
|
/*
|
|
* Split any comma-separated hostnames from the host list,
|
|
* hash and store separately.
|
|
*/
|
|
ohosts = hosts = xstrdup(l->hosts);
|
|
while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
|
|
if ((hashed = host_hash(cp, NULL, 0)) == NULL)
|
|
fatal("hash_host failed");
|
|
fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
|
|
ctx->has_unhashed = 1;
|
|
}
|
|
free(ohosts);
|
|
return 0;
|
|
case HKF_STATUS_INVALID:
|
|
/* Retain invalid lines, but mark file as invalid. */
|
|
ctx->invalid = 1;
|
|
logit("%s:%ld: invalid line", l->path, l->linenum);
|
|
/* FALLTHROUGH */
|
|
default:
|
|
fprintf(ctx->out, "%s\n", l->line);
|
|
return 0;
|
|
}
|
|
/* NOTREACHED */
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
|
|
{
|
|
struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
|
|
enum sshkey_fp_rep rep;
|
|
int fptype;
|
|
char *fp;
|
|
|
|
fptype = print_bubblebabble ? SSH_DIGEST_SHA1 : fingerprint_hash;
|
|
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_DEFAULT;
|
|
|
|
if (l->status == HKF_STATUS_MATCHED) {
|
|
if (delete_host) {
|
|
if (l->marker != MRK_NONE) {
|
|
/* Don't remove CA and revocation lines */
|
|
fprintf(ctx->out, "%s\n", l->line);
|
|
} else {
|
|
/*
|
|
* Hostname matches and has no CA/revoke
|
|
* marker, delete it by *not* writing the
|
|
* line to ctx->out.
|
|
*/
|
|
ctx->found_key = 1;
|
|
if (!quiet)
|
|
printf("# Host %s found: line %ld\n",
|
|
ctx->host, l->linenum);
|
|
}
|
|
return 0;
|
|
} else if (find_host) {
|
|
ctx->found_key = 1;
|
|
if (!quiet) {
|
|
printf("# Host %s found: line %ld %s\n",
|
|
ctx->host,
|
|
l->linenum, l->marker == MRK_CA ? "CA" :
|
|
(l->marker == MRK_REVOKE ? "REVOKED" : ""));
|
|
}
|
|
if (hash_hosts)
|
|
known_hosts_hash(l, ctx);
|
|
else if (print_fingerprint) {
|
|
fp = sshkey_fingerprint(l->key, fptype, rep);
|
|
mprintf("%s %s %s %s\n", ctx->host,
|
|
sshkey_type(l->key), fp, l->comment);
|
|
free(fp);
|
|
} else
|
|
fprintf(ctx->out, "%s\n", l->line);
|
|
return 0;
|
|
}
|
|
} else if (delete_host) {
|
|
/* Retain non-matching hosts when deleting */
|
|
if (l->status == HKF_STATUS_INVALID) {
|
|
ctx->invalid = 1;
|
|
logit("%s:%ld: invalid line", l->path, l->linenum);
|
|
}
|
|
fprintf(ctx->out, "%s\n", l->line);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
do_known_hosts(struct passwd *pw, const char *name)
|
|
{
|
|
char *cp, tmp[PATH_MAX], old[PATH_MAX];
|
|
int r, fd, oerrno, inplace = 0;
|
|
struct known_hosts_ctx ctx;
|
|
u_int foreach_options;
|
|
|
|
if (!have_identity) {
|
|
cp = tilde_expand_filename(_PATH_SSH_USER_HOSTFILE, pw->pw_uid);
|
|
if (strlcpy(identity_file, cp, sizeof(identity_file)) >=
|
|
sizeof(identity_file))
|
|
fatal("Specified known hosts path too long");
|
|
free(cp);
|
|
have_identity = 1;
|
|
}
|
|
|
|
memset(&ctx, 0, sizeof(ctx));
|
|
ctx.out = stdout;
|
|
ctx.host = name;
|
|
|
|
/*
|
|
* Find hosts goes to stdout, hash and deletions happen in-place
|
|
* A corner case is ssh-keygen -HF foo, which should go to stdout
|
|
*/
|
|
if (!find_host && (hash_hosts || delete_host)) {
|
|
if (strlcpy(tmp, identity_file, sizeof(tmp)) >= sizeof(tmp) ||
|
|
strlcat(tmp, ".XXXXXXXXXX", sizeof(tmp)) >= sizeof(tmp) ||
|
|
strlcpy(old, identity_file, sizeof(old)) >= sizeof(old) ||
|
|
strlcat(old, ".old", sizeof(old)) >= sizeof(old))
|
|
fatal("known_hosts path too long");
|
|
umask(077);
|
|
if ((fd = mkstemp(tmp)) == -1)
|
|
fatal("mkstemp: %s", strerror(errno));
|
|
if ((ctx.out = fdopen(fd, "w")) == NULL) {
|
|
oerrno = errno;
|
|
unlink(tmp);
|
|
fatal("fdopen: %s", strerror(oerrno));
|
|
}
|
|
inplace = 1;
|
|
}
|
|
|
|
/* XXX support identity_file == "-" for stdin */
|
|
foreach_options = find_host ? HKF_WANT_MATCH : 0;
|
|
foreach_options |= print_fingerprint ? HKF_WANT_PARSE_KEY : 0;
|
|
if ((r = hostkeys_foreach(identity_file,
|
|
hash_hosts ? known_hosts_hash : known_hosts_find_delete, &ctx,
|
|
name, NULL, foreach_options)) != 0) {
|
|
if (inplace)
|
|
unlink(tmp);
|
|
fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
|
|
}
|
|
|
|
if (inplace)
|
|
fclose(ctx.out);
|
|
|
|
if (ctx.invalid) {
|
|
error("%s is not a valid known_hosts file.", identity_file);
|
|
if (inplace) {
|
|
error("Not replacing existing known_hosts "
|
|
"file because of errors");
|
|
unlink(tmp);
|
|
}
|
|
exit(1);
|
|
} else if (delete_host && !ctx.found_key) {
|
|
logit("Host %s not found in %s", name, identity_file);
|
|
if (inplace)
|
|
unlink(tmp);
|
|
} else if (inplace) {
|
|
/* Backup existing file */
|
|
if (unlink(old) == -1 && errno != ENOENT)
|
|
fatal("unlink %.100s: %s", old, strerror(errno));
|
|
if (link(identity_file, old) == -1)
|
|
fatal("link %.100s to %.100s: %s", identity_file, old,
|
|
strerror(errno));
|
|
/* Move new one into place */
|
|
if (rename(tmp, identity_file) == -1) {
|
|
error("rename\"%s\" to \"%s\": %s", tmp, identity_file,
|
|
strerror(errno));
|
|
unlink(tmp);
|
|
unlink(old);
|
|
exit(1);
|
|
}
|
|
|
|
printf("%s updated.\n", identity_file);
|
|
printf("Original contents retained as %s\n", old);
|
|
if (ctx.has_unhashed) {
|
|
logit("WARNING: %s contains unhashed entries", old);
|
|
logit("Delete this file to ensure privacy "
|
|
"of hostnames");
|
|
}
|
|
}
|
|
|
|
exit (find_host && !ctx.found_key);
|
|
}
|
|
|
|
/*
|
|
* Perform changing a passphrase. The argument is the passwd structure
|
|
* for the current user.
|
|
*/
|
|
static void
|
|
do_change_passphrase(struct passwd *pw)
|
|
{
|
|
char *comment;
|
|
char *old_passphrase, *passphrase1, *passphrase2;
|
|
struct stat st;
|
|
struct sshkey *private;
|
|
int r;
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which the key is");
|
|
if (stat(identity_file, &st) < 0)
|
|
fatal("%s: %s", identity_file, strerror(errno));
|
|
/* Try to load the file with empty passphrase. */
|
|
r = sshkey_load_private(identity_file, "", &private, &comment);
|
|
if (r == SSH_ERR_KEY_WRONG_PASSPHRASE) {
|
|
if (identity_passphrase)
|
|
old_passphrase = xstrdup(identity_passphrase);
|
|
else
|
|
old_passphrase =
|
|
read_passphrase("Enter old passphrase: ",
|
|
RP_ALLOW_STDIN);
|
|
r = sshkey_load_private(identity_file, old_passphrase,
|
|
&private, &comment);
|
|
explicit_bzero(old_passphrase, strlen(old_passphrase));
|
|
free(old_passphrase);
|
|
if (r != 0)
|
|
goto badkey;
|
|
} else if (r != 0) {
|
|
badkey:
|
|
fatal("Failed to load key %s: %s", identity_file, ssh_err(r));
|
|
}
|
|
if (comment)
|
|
mprintf("Key has comment '%s'\n", comment);
|
|
|
|
/* Ask the new passphrase (twice). */
|
|
if (identity_new_passphrase) {
|
|
passphrase1 = xstrdup(identity_new_passphrase);
|
|
passphrase2 = NULL;
|
|
} else {
|
|
passphrase1 =
|
|
read_passphrase("Enter new passphrase (empty for no "
|
|
"passphrase): ", RP_ALLOW_STDIN);
|
|
passphrase2 = read_passphrase("Enter same passphrase again: ",
|
|
RP_ALLOW_STDIN);
|
|
|
|
/* Verify that they are the same. */
|
|
if (strcmp(passphrase1, passphrase2) != 0) {
|
|
explicit_bzero(passphrase1, strlen(passphrase1));
|
|
explicit_bzero(passphrase2, strlen(passphrase2));
|
|
free(passphrase1);
|
|
free(passphrase2);
|
|
printf("Pass phrases do not match. Try again.\n");
|
|
exit(1);
|
|
}
|
|
/* Destroy the other copy. */
|
|
explicit_bzero(passphrase2, strlen(passphrase2));
|
|
free(passphrase2);
|
|
}
|
|
|
|
/* Save the file using the new passphrase. */
|
|
if ((r = sshkey_save_private(private, identity_file, passphrase1,
|
|
comment, use_new_format, new_format_cipher, rounds)) != 0) {
|
|
error("Saving key \"%s\" failed: %s.",
|
|
identity_file, ssh_err(r));
|
|
explicit_bzero(passphrase1, strlen(passphrase1));
|
|
free(passphrase1);
|
|
sshkey_free(private);
|
|
free(comment);
|
|
exit(1);
|
|
}
|
|
/* Destroy the passphrase and the copy of the key in memory. */
|
|
explicit_bzero(passphrase1, strlen(passphrase1));
|
|
free(passphrase1);
|
|
sshkey_free(private); /* Destroys contents */
|
|
free(comment);
|
|
|
|
printf("Your identification has been saved with the new passphrase.\n");
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* Print the SSHFP RR.
|
|
*/
|
|
static int
|
|
do_print_resource_record(struct passwd *pw, char *fname, char *hname)
|
|
{
|
|
struct sshkey *public;
|
|
char *comment = NULL;
|
|
struct stat st;
|
|
int r;
|
|
|
|
if (fname == NULL)
|
|
fatal("%s: no filename", __func__);
|
|
if (stat(fname, &st) < 0) {
|
|
if (errno == ENOENT)
|
|
return 0;
|
|
fatal("%s: %s", fname, strerror(errno));
|
|
}
|
|
if ((r = sshkey_load_public(fname, &public, &comment)) != 0)
|
|
fatal("Failed to read v2 public key from \"%s\": %s.",
|
|
fname, ssh_err(r));
|
|
export_dns_rr(hname, public, stdout, print_generic);
|
|
sshkey_free(public);
|
|
free(comment);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Change the comment of a private key file.
|
|
*/
|
|
static void
|
|
do_change_comment(struct passwd *pw)
|
|
{
|
|
char new_comment[1024], *comment, *passphrase;
|
|
struct sshkey *private;
|
|
struct sshkey *public;
|
|
struct stat st;
|
|
FILE *f;
|
|
int r, fd;
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which the key is");
|
|
if (stat(identity_file, &st) < 0)
|
|
fatal("%s: %s", identity_file, strerror(errno));
|
|
if ((r = sshkey_load_private(identity_file, "",
|
|
&private, &comment)) == 0)
|
|
passphrase = xstrdup("");
|
|
else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE)
|
|
fatal("Cannot load private key \"%s\": %s.",
|
|
identity_file, ssh_err(r));
|
|
else {
|
|
if (identity_passphrase)
|
|
passphrase = xstrdup(identity_passphrase);
|
|
else if (identity_new_passphrase)
|
|
passphrase = xstrdup(identity_new_passphrase);
|
|
else
|
|
passphrase = read_passphrase("Enter passphrase: ",
|
|
RP_ALLOW_STDIN);
|
|
/* Try to load using the passphrase. */
|
|
if ((r = sshkey_load_private(identity_file, passphrase,
|
|
&private, &comment)) != 0) {
|
|
explicit_bzero(passphrase, strlen(passphrase));
|
|
free(passphrase);
|
|
fatal("Cannot load private key \"%s\": %s.",
|
|
identity_file, ssh_err(r));
|
|
}
|
|
}
|
|
|
|
if (private->type != KEY_RSA1 && private->type != KEY_ED25519 &&
|
|
!use_new_format) {
|
|
error("Comments are only supported for RSA1 or keys stored in "
|
|
"the new format (-o).");
|
|
explicit_bzero(passphrase, strlen(passphrase));
|
|
sshkey_free(private);
|
|
exit(1);
|
|
}
|
|
if (comment)
|
|
printf("Key now has comment '%s'\n", comment);
|
|
else
|
|
printf("Key now has no comment\n");
|
|
|
|
if (identity_comment) {
|
|
strlcpy(new_comment, identity_comment, sizeof(new_comment));
|
|
} else {
|
|
printf("Enter new comment: ");
|
|
fflush(stdout);
|
|
if (!fgets(new_comment, sizeof(new_comment), stdin)) {
|
|
explicit_bzero(passphrase, strlen(passphrase));
|
|
sshkey_free(private);
|
|
exit(1);
|
|
}
|
|
new_comment[strcspn(new_comment, "\n")] = '\0';
|
|
}
|
|
|
|
/* Save the file using the new passphrase. */
|
|
if ((r = sshkey_save_private(private, identity_file, passphrase,
|
|
new_comment, use_new_format, new_format_cipher, rounds)) != 0) {
|
|
error("Saving key \"%s\" failed: %s",
|
|
identity_file, ssh_err(r));
|
|
explicit_bzero(passphrase, strlen(passphrase));
|
|
free(passphrase);
|
|
sshkey_free(private);
|
|
free(comment);
|
|
exit(1);
|
|
}
|
|
explicit_bzero(passphrase, strlen(passphrase));
|
|
free(passphrase);
|
|
if ((r = sshkey_from_private(private, &public)) != 0)
|
|
fatal("key_from_private failed: %s", ssh_err(r));
|
|
sshkey_free(private);
|
|
|
|
strlcat(identity_file, ".pub", sizeof(identity_file));
|
|
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644);
|
|
if (fd == -1)
|
|
fatal("Could not save your public key in %s", identity_file);
|
|
f = fdopen(fd, "w");
|
|
if (f == NULL)
|
|
fatal("fdopen %s failed: %s", identity_file, strerror(errno));
|
|
if ((r = sshkey_write(public, f)) != 0)
|
|
fatal("write key failed: %s", ssh_err(r));
|
|
sshkey_free(public);
|
|
fprintf(f, " %s\n", new_comment);
|
|
fclose(f);
|
|
|
|
free(comment);
|
|
|
|
printf("The comment in your key file has been changed.\n");
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
add_flag_option(struct sshbuf *c, const char *name)
|
|
{
|
|
int r;
|
|
|
|
debug3("%s: %s", __func__, name);
|
|
if ((r = sshbuf_put_cstring(c, name)) != 0 ||
|
|
(r = sshbuf_put_string(c, NULL, 0)) != 0)
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r));
|
|
}
|
|
|
|
static void
|
|
add_string_option(struct sshbuf *c, const char *name, const char *value)
|
|
{
|
|
struct sshbuf *b;
|
|
int r;
|
|
|
|
debug3("%s: %s=%s", __func__, name, value);
|
|
if ((b = sshbuf_new()) == NULL)
|
|
fatal("%s: sshbuf_new failed", __func__);
|
|
if ((r = sshbuf_put_cstring(b, value)) != 0 ||
|
|
(r = sshbuf_put_cstring(c, name)) != 0 ||
|
|
(r = sshbuf_put_stringb(c, b)) != 0)
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r));
|
|
|
|
sshbuf_free(b);
|
|
}
|
|
|
|
#define OPTIONS_CRITICAL 1
|
|
#define OPTIONS_EXTENSIONS 2
|
|
static void
|
|
prepare_options_buf(struct sshbuf *c, int which)
|
|
{
|
|
sshbuf_reset(c);
|
|
if ((which & OPTIONS_CRITICAL) != 0 &&
|
|
certflags_command != NULL)
|
|
add_string_option(c, "force-command", certflags_command);
|
|
if ((which & OPTIONS_EXTENSIONS) != 0 &&
|
|
(certflags_flags & CERTOPT_X_FWD) != 0)
|
|
add_flag_option(c, "permit-X11-forwarding");
|
|
if ((which & OPTIONS_EXTENSIONS) != 0 &&
|
|
(certflags_flags & CERTOPT_AGENT_FWD) != 0)
|
|
add_flag_option(c, "permit-agent-forwarding");
|
|
if ((which & OPTIONS_EXTENSIONS) != 0 &&
|
|
(certflags_flags & CERTOPT_PORT_FWD) != 0)
|
|
add_flag_option(c, "permit-port-forwarding");
|
|
if ((which & OPTIONS_EXTENSIONS) != 0 &&
|
|
(certflags_flags & CERTOPT_PTY) != 0)
|
|
add_flag_option(c, "permit-pty");
|
|
if ((which & OPTIONS_EXTENSIONS) != 0 &&
|
|
(certflags_flags & CERTOPT_USER_RC) != 0)
|
|
add_flag_option(c, "permit-user-rc");
|
|
if ((which & OPTIONS_CRITICAL) != 0 &&
|
|
certflags_src_addr != NULL)
|
|
add_string_option(c, "source-address", certflags_src_addr);
|
|
}
|
|
|
|
static struct sshkey *
|
|
load_pkcs11_key(char *path)
|
|
{
|
|
#ifdef ENABLE_PKCS11
|
|
struct sshkey **keys = NULL, *public, *private = NULL;
|
|
int r, i, nkeys;
|
|
|
|
if ((r = sshkey_load_public(path, &public, NULL)) != 0)
|
|
fatal("Couldn't load CA public key \"%s\": %s",
|
|
path, ssh_err(r));
|
|
|
|
nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys);
|
|
debug3("%s: %d keys", __func__, nkeys);
|
|
if (nkeys <= 0)
|
|
fatal("cannot read public key from pkcs11");
|
|
for (i = 0; i < nkeys; i++) {
|
|
if (sshkey_equal_public(public, keys[i])) {
|
|
private = keys[i];
|
|
continue;
|
|
}
|
|
sshkey_free(keys[i]);
|
|
}
|
|
free(keys);
|
|
sshkey_free(public);
|
|
return private;
|
|
#else
|
|
fatal("no pkcs11 support");
|
|
#endif /* ENABLE_PKCS11 */
|
|
}
|
|
|
|
static void
|
|
do_ca_sign(struct passwd *pw, int argc, char **argv)
|
|
{
|
|
int r, i, fd;
|
|
u_int n;
|
|
struct sshkey *ca, *public;
|
|
char valid[64], *otmp, *tmp, *cp, *out, *comment, **plist = NULL;
|
|
FILE *f;
|
|
|
|
#ifdef ENABLE_PKCS11
|
|
pkcs11_init(1);
|
|
#endif
|
|
tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
|
|
if (pkcs11provider != NULL) {
|
|
if ((ca = load_pkcs11_key(tmp)) == NULL)
|
|
fatal("No PKCS#11 key matching %s found", ca_key_path);
|
|
} else
|
|
ca = load_identity(tmp);
|
|
free(tmp);
|
|
|
|
if (key_type_name != NULL &&
|
|
sshkey_type_from_name(key_type_name) != ca->type) {
|
|
fatal("CA key type %s doesn't match specified %s",
|
|
sshkey_ssh_name(ca), key_type_name);
|
|
}
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
/* Split list of principals */
|
|
n = 0;
|
|
if (cert_principals != NULL) {
|
|
otmp = tmp = xstrdup(cert_principals);
|
|
plist = NULL;
|
|
for (; (cp = strsep(&tmp, ",")) != NULL; n++) {
|
|
plist = xreallocarray(plist, n + 1, sizeof(*plist));
|
|
if (*(plist[n] = xstrdup(cp)) == '\0')
|
|
fatal("Empty principal name");
|
|
}
|
|
free(otmp);
|
|
}
|
|
|
|
tmp = tilde_expand_filename(argv[i], pw->pw_uid);
|
|
if ((r = sshkey_load_public(tmp, &public, &comment)) != 0)
|
|
fatal("%s: unable to open \"%s\": %s",
|
|
__func__, tmp, ssh_err(r));
|
|
if (public->type != KEY_RSA && public->type != KEY_DSA &&
|
|
public->type != KEY_ECDSA && public->type != KEY_ED25519)
|
|
fatal("%s: key \"%s\" type %s cannot be certified",
|
|
__func__, tmp, sshkey_type(public));
|
|
|
|
/* Prepare certificate to sign */
|
|
if ((r = sshkey_to_certified(public)) != 0)
|
|
fatal("Could not upgrade key %s to certificate: %s",
|
|
tmp, ssh_err(r));
|
|
public->cert->type = cert_key_type;
|
|
public->cert->serial = (u_int64_t)cert_serial;
|
|
public->cert->key_id = xstrdup(cert_key_id);
|
|
public->cert->nprincipals = n;
|
|
public->cert->principals = plist;
|
|
public->cert->valid_after = cert_valid_from;
|
|
public->cert->valid_before = cert_valid_to;
|
|
prepare_options_buf(public->cert->critical, OPTIONS_CRITICAL);
|
|
prepare_options_buf(public->cert->extensions,
|
|
OPTIONS_EXTENSIONS);
|
|
if ((r = sshkey_from_private(ca,
|
|
&public->cert->signature_key)) != 0)
|
|
fatal("key_from_private (ca key): %s", ssh_err(r));
|
|
|
|
if ((r = sshkey_certify(public, ca, key_type_name)) != 0)
|
|
fatal("Couldn't certify key %s: %s", tmp, ssh_err(r));
|
|
|
|
if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0)
|
|
*cp = '\0';
|
|
xasprintf(&out, "%s-cert.pub", tmp);
|
|
free(tmp);
|
|
|
|
if ((fd = open(out, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
|
|
fatal("Could not open \"%s\" for writing: %s", out,
|
|
strerror(errno));
|
|
if ((f = fdopen(fd, "w")) == NULL)
|
|
fatal("%s: fdopen: %s", __func__, strerror(errno));
|
|
if ((r = sshkey_write(public, f)) != 0)
|
|
fatal("Could not write certified key to %s: %s",
|
|
out, ssh_err(r));
|
|
fprintf(f, " %s\n", comment);
|
|
fclose(f);
|
|
|
|
if (!quiet) {
|
|
sshkey_format_cert_validity(public->cert,
|
|
valid, sizeof(valid));
|
|
logit("Signed %s key %s: id \"%s\" serial %llu%s%s "
|
|
"valid %s", sshkey_cert_type(public),
|
|
out, public->cert->key_id,
|
|
(unsigned long long)public->cert->serial,
|
|
cert_principals != NULL ? " for " : "",
|
|
cert_principals != NULL ? cert_principals : "",
|
|
valid);
|
|
}
|
|
|
|
sshkey_free(public);
|
|
free(out);
|
|
}
|
|
#ifdef ENABLE_PKCS11
|
|
pkcs11_terminate();
|
|
#endif
|
|
exit(0);
|
|
}
|
|
|
|
static u_int64_t
|
|
parse_relative_time(const char *s, time_t now)
|
|
{
|
|
int64_t mul, secs;
|
|
|
|
mul = *s == '-' ? -1 : 1;
|
|
|
|
if ((secs = convtime(s + 1)) == -1)
|
|
fatal("Invalid relative certificate time %s", s);
|
|
if (mul == -1 && secs > now)
|
|
fatal("Certificate time %s cannot be represented", s);
|
|
return now + (u_int64_t)(secs * mul);
|
|
}
|
|
|
|
static u_int64_t
|
|
parse_absolute_time(const char *s)
|
|
{
|
|
struct tm tm;
|
|
time_t tt;
|
|
char buf[32], *fmt;
|
|
|
|
/*
|
|
* POSIX strptime says "The application shall ensure that there
|
|
* is white-space or other non-alphanumeric characters between
|
|
* any two conversion specifications" so arrange things this way.
|
|
*/
|
|
switch (strlen(s)) {
|
|
case 8:
|
|
fmt = "%Y-%m-%d";
|
|
snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2s", s, s + 4, s + 6);
|
|
break;
|
|
case 14:
|
|
fmt = "%Y-%m-%dT%H:%M:%S";
|
|
snprintf(buf, sizeof(buf), "%.4s-%.2s-%.2sT%.2s:%.2s:%.2s",
|
|
s, s + 4, s + 6, s + 8, s + 10, s + 12);
|
|
break;
|
|
default:
|
|
fatal("Invalid certificate time format %s", s);
|
|
}
|
|
|
|
memset(&tm, 0, sizeof(tm));
|
|
if (strptime(buf, fmt, &tm) == NULL)
|
|
fatal("Invalid certificate time %s", s);
|
|
if ((tt = mktime(&tm)) < 0)
|
|
fatal("Certificate time %s cannot be represented", s);
|
|
return (u_int64_t)tt;
|
|
}
|
|
|
|
static void
|
|
parse_cert_times(char *timespec)
|
|
{
|
|
char *from, *to;
|
|
time_t now = time(NULL);
|
|
int64_t secs;
|
|
|
|
/* +timespec relative to now */
|
|
if (*timespec == '+' && strchr(timespec, ':') == NULL) {
|
|
if ((secs = convtime(timespec + 1)) == -1)
|
|
fatal("Invalid relative certificate life %s", timespec);
|
|
cert_valid_to = now + secs;
|
|
/*
|
|
* Backdate certificate one minute to avoid problems on hosts
|
|
* with poorly-synchronised clocks.
|
|
*/
|
|
cert_valid_from = ((now - 59)/ 60) * 60;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* from:to, where
|
|
* from := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
|
|
* to := [+-]timespec | YYYYMMDD | YYYYMMDDHHMMSS
|
|
*/
|
|
from = xstrdup(timespec);
|
|
to = strchr(from, ':');
|
|
if (to == NULL || from == to || *(to + 1) == '\0')
|
|
fatal("Invalid certificate life specification %s", timespec);
|
|
*to++ = '\0';
|
|
|
|
if (*from == '-' || *from == '+')
|
|
cert_valid_from = parse_relative_time(from, now);
|
|
else
|
|
cert_valid_from = parse_absolute_time(from);
|
|
|
|
if (*to == '-' || *to == '+')
|
|
cert_valid_to = parse_relative_time(to, now);
|
|
else
|
|
cert_valid_to = parse_absolute_time(to);
|
|
|
|
if (cert_valid_to <= cert_valid_from)
|
|
fatal("Empty certificate validity interval");
|
|
free(from);
|
|
}
|
|
|
|
static void
|
|
add_cert_option(char *opt)
|
|
{
|
|
char *val;
|
|
|
|
if (strcasecmp(opt, "clear") == 0)
|
|
certflags_flags = 0;
|
|
else if (strcasecmp(opt, "no-x11-forwarding") == 0)
|
|
certflags_flags &= ~CERTOPT_X_FWD;
|
|
else if (strcasecmp(opt, "permit-x11-forwarding") == 0)
|
|
certflags_flags |= CERTOPT_X_FWD;
|
|
else if (strcasecmp(opt, "no-agent-forwarding") == 0)
|
|
certflags_flags &= ~CERTOPT_AGENT_FWD;
|
|
else if (strcasecmp(opt, "permit-agent-forwarding") == 0)
|
|
certflags_flags |= CERTOPT_AGENT_FWD;
|
|
else if (strcasecmp(opt, "no-port-forwarding") == 0)
|
|
certflags_flags &= ~CERTOPT_PORT_FWD;
|
|
else if (strcasecmp(opt, "permit-port-forwarding") == 0)
|
|
certflags_flags |= CERTOPT_PORT_FWD;
|
|
else if (strcasecmp(opt, "no-pty") == 0)
|
|
certflags_flags &= ~CERTOPT_PTY;
|
|
else if (strcasecmp(opt, "permit-pty") == 0)
|
|
certflags_flags |= CERTOPT_PTY;
|
|
else if (strcasecmp(opt, "no-user-rc") == 0)
|
|
certflags_flags &= ~CERTOPT_USER_RC;
|
|
else if (strcasecmp(opt, "permit-user-rc") == 0)
|
|
certflags_flags |= CERTOPT_USER_RC;
|
|
else if (strncasecmp(opt, "force-command=", 14) == 0) {
|
|
val = opt + 14;
|
|
if (*val == '\0')
|
|
fatal("Empty force-command option");
|
|
if (certflags_command != NULL)
|
|
fatal("force-command already specified");
|
|
certflags_command = xstrdup(val);
|
|
} else if (strncasecmp(opt, "source-address=", 15) == 0) {
|
|
val = opt + 15;
|
|
if (*val == '\0')
|
|
fatal("Empty source-address option");
|
|
if (certflags_src_addr != NULL)
|
|
fatal("source-address already specified");
|
|
if (addr_match_cidr_list(NULL, val) != 0)
|
|
fatal("Invalid source-address list");
|
|
certflags_src_addr = xstrdup(val);
|
|
} else
|
|
fatal("Unsupported certificate option \"%s\"", opt);
|
|
}
|
|
|
|
static void
|
|
show_options(struct sshbuf *optbuf, int in_critical)
|
|
{
|
|
char *name, *arg;
|
|
struct sshbuf *options, *option = NULL;
|
|
int r;
|
|
|
|
if ((options = sshbuf_fromb(optbuf)) == NULL)
|
|
fatal("%s: sshbuf_fromb failed", __func__);
|
|
while (sshbuf_len(options) != 0) {
|
|
sshbuf_free(option);
|
|
option = NULL;
|
|
if ((r = sshbuf_get_cstring(options, &name, NULL)) != 0 ||
|
|
(r = sshbuf_froms(options, &option)) != 0)
|
|
fatal("%s: buffer error: %s", __func__, ssh_err(r));
|
|
printf(" %s", name);
|
|
if (!in_critical &&
|
|
(strcmp(name, "permit-X11-forwarding") == 0 ||
|
|
strcmp(name, "permit-agent-forwarding") == 0 ||
|
|
strcmp(name, "permit-port-forwarding") == 0 ||
|
|
strcmp(name, "permit-pty") == 0 ||
|
|
strcmp(name, "permit-user-rc") == 0))
|
|
printf("\n");
|
|
else if (in_critical &&
|
|
(strcmp(name, "force-command") == 0 ||
|
|
strcmp(name, "source-address") == 0)) {
|
|
if ((r = sshbuf_get_cstring(option, &arg, NULL)) != 0)
|
|
fatal("%s: buffer error: %s",
|
|
__func__, ssh_err(r));
|
|
printf(" %s\n", arg);
|
|
free(arg);
|
|
} else {
|
|
printf(" UNKNOWN OPTION (len %zu)\n",
|
|
sshbuf_len(option));
|
|
sshbuf_reset(option);
|
|
}
|
|
free(name);
|
|
if (sshbuf_len(option) != 0)
|
|
fatal("Option corrupt: extra data at end");
|
|
}
|
|
sshbuf_free(option);
|
|
sshbuf_free(options);
|
|
}
|
|
|
|
static void
|
|
print_cert(struct sshkey *key)
|
|
{
|
|
char valid[64], *key_fp, *ca_fp;
|
|
u_int i;
|
|
|
|
key_fp = sshkey_fingerprint(key, fingerprint_hash, SSH_FP_DEFAULT);
|
|
ca_fp = sshkey_fingerprint(key->cert->signature_key,
|
|
fingerprint_hash, SSH_FP_DEFAULT);
|
|
if (key_fp == NULL || ca_fp == NULL)
|
|
fatal("%s: sshkey_fingerprint fail", __func__);
|
|
sshkey_format_cert_validity(key->cert, valid, sizeof(valid));
|
|
|
|
printf(" Type: %s %s certificate\n", sshkey_ssh_name(key),
|
|
sshkey_cert_type(key));
|
|
printf(" Public key: %s %s\n", sshkey_type(key), key_fp);
|
|
printf(" Signing CA: %s %s\n",
|
|
sshkey_type(key->cert->signature_key), ca_fp);
|
|
printf(" Key ID: \"%s\"\n", key->cert->key_id);
|
|
printf(" Serial: %llu\n", (unsigned long long)key->cert->serial);
|
|
printf(" Valid: %s\n", valid);
|
|
printf(" Principals: ");
|
|
if (key->cert->nprincipals == 0)
|
|
printf("(none)\n");
|
|
else {
|
|
for (i = 0; i < key->cert->nprincipals; i++)
|
|
printf("\n %s",
|
|
key->cert->principals[i]);
|
|
printf("\n");
|
|
}
|
|
printf(" Critical Options: ");
|
|
if (sshbuf_len(key->cert->critical) == 0)
|
|
printf("(none)\n");
|
|
else {
|
|
printf("\n");
|
|
show_options(key->cert->critical, 1);
|
|
}
|
|
printf(" Extensions: ");
|
|
if (sshbuf_len(key->cert->extensions) == 0)
|
|
printf("(none)\n");
|
|
else {
|
|
printf("\n");
|
|
show_options(key->cert->extensions, 0);
|
|
}
|
|
}
|
|
|
|
static void
|
|
do_show_cert(struct passwd *pw)
|
|
{
|
|
struct sshkey *key = NULL;
|
|
struct stat st;
|
|
int r, is_stdin = 0, ok = 0;
|
|
FILE *f;
|
|
char *cp, line[SSH_MAX_PUBKEY_BYTES];
|
|
const char *path;
|
|
u_long lnum = 0;
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which the key is");
|
|
if (strcmp(identity_file, "-") != 0 && stat(identity_file, &st) < 0)
|
|
fatal("%s: %s: %s", __progname, identity_file, strerror(errno));
|
|
|
|
path = identity_file;
|
|
if (strcmp(path, "-") == 0) {
|
|
f = stdin;
|
|
path = "(stdin)";
|
|
is_stdin = 1;
|
|
} else if ((f = fopen(identity_file, "r")) == NULL)
|
|
fatal("fopen %s: %s", identity_file, strerror(errno));
|
|
|
|
while (read_keyfile_line(f, path, line, sizeof(line), &lnum) == 0) {
|
|
sshkey_free(key);
|
|
key = NULL;
|
|
/* Trim leading space and comments */
|
|
cp = line + strspn(line, " \t");
|
|
if (*cp == '#' || *cp == '\0')
|
|
continue;
|
|
if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("key_new");
|
|
if ((r = sshkey_read(key, &cp)) != 0) {
|
|
error("%s:%lu: invalid key: %s", path,
|
|
lnum, ssh_err(r));
|
|
continue;
|
|
}
|
|
if (!sshkey_is_cert(key)) {
|
|
error("%s:%lu is not a certificate", path, lnum);
|
|
continue;
|
|
}
|
|
ok = 1;
|
|
if (!is_stdin && lnum == 1)
|
|
printf("%s:\n", path);
|
|
else
|
|
printf("%s:%lu:\n", path, lnum);
|
|
print_cert(key);
|
|
}
|
|
sshkey_free(key);
|
|
fclose(f);
|
|
exit(ok ? 0 : 1);
|
|
}
|
|
|
|
static void
|
|
load_krl(const char *path, struct ssh_krl **krlp)
|
|
{
|
|
struct sshbuf *krlbuf;
|
|
int r, fd;
|
|
|
|
if ((krlbuf = sshbuf_new()) == NULL)
|
|
fatal("sshbuf_new failed");
|
|
if ((fd = open(path, O_RDONLY)) == -1)
|
|
fatal("open %s: %s", path, strerror(errno));
|
|
if ((r = sshkey_load_file(fd, krlbuf)) != 0)
|
|
fatal("Unable to load KRL: %s", ssh_err(r));
|
|
close(fd);
|
|
/* XXX check sigs */
|
|
if ((r = ssh_krl_from_blob(krlbuf, krlp, NULL, 0)) != 0 ||
|
|
*krlp == NULL)
|
|
fatal("Invalid KRL file: %s", ssh_err(r));
|
|
sshbuf_free(krlbuf);
|
|
}
|
|
|
|
static void
|
|
update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
|
|
const struct sshkey *ca, struct ssh_krl *krl)
|
|
{
|
|
struct sshkey *key = NULL;
|
|
u_long lnum = 0;
|
|
char *path, *cp, *ep, line[SSH_MAX_PUBKEY_BYTES];
|
|
unsigned long long serial, serial2;
|
|
int i, was_explicit_key, was_sha1, r;
|
|
FILE *krl_spec;
|
|
|
|
path = tilde_expand_filename(file, pw->pw_uid);
|
|
if (strcmp(path, "-") == 0) {
|
|
krl_spec = stdin;
|
|
free(path);
|
|
path = xstrdup("(standard input)");
|
|
} else if ((krl_spec = fopen(path, "r")) == NULL)
|
|
fatal("fopen %s: %s", path, strerror(errno));
|
|
|
|
if (!quiet)
|
|
printf("Revoking from %s\n", path);
|
|
while (read_keyfile_line(krl_spec, path, line, sizeof(line),
|
|
&lnum) == 0) {
|
|
was_explicit_key = was_sha1 = 0;
|
|
cp = line + strspn(line, " \t");
|
|
/* Trim trailing space, comments and strip \n */
|
|
for (i = 0, r = -1; cp[i] != '\0'; i++) {
|
|
if (cp[i] == '#' || cp[i] == '\n') {
|
|
cp[i] = '\0';
|
|
break;
|
|
}
|
|
if (cp[i] == ' ' || cp[i] == '\t') {
|
|
/* Remember the start of a span of whitespace */
|
|
if (r == -1)
|
|
r = i;
|
|
} else
|
|
r = -1;
|
|
}
|
|
if (r != -1)
|
|
cp[r] = '\0';
|
|
if (*cp == '\0')
|
|
continue;
|
|
if (strncasecmp(cp, "serial:", 7) == 0) {
|
|
if (ca == NULL && !wild_ca) {
|
|
fatal("revoking certificates by serial number "
|
|
"requires specification of a CA key");
|
|
}
|
|
cp += 7;
|
|
cp = cp + strspn(cp, " \t");
|
|
errno = 0;
|
|
serial = strtoull(cp, &ep, 0);
|
|
if (*cp == '\0' || (*ep != '\0' && *ep != '-'))
|
|
fatal("%s:%lu: invalid serial \"%s\"",
|
|
path, lnum, cp);
|
|
if (errno == ERANGE && serial == ULLONG_MAX)
|
|
fatal("%s:%lu: serial out of range",
|
|
path, lnum);
|
|
serial2 = serial;
|
|
if (*ep == '-') {
|
|
cp = ep + 1;
|
|
errno = 0;
|
|
serial2 = strtoull(cp, &ep, 0);
|
|
if (*cp == '\0' || *ep != '\0')
|
|
fatal("%s:%lu: invalid serial \"%s\"",
|
|
path, lnum, cp);
|
|
if (errno == ERANGE && serial2 == ULLONG_MAX)
|
|
fatal("%s:%lu: serial out of range",
|
|
path, lnum);
|
|
if (serial2 <= serial)
|
|
fatal("%s:%lu: invalid serial range "
|
|
"%llu:%llu", path, lnum,
|
|
(unsigned long long)serial,
|
|
(unsigned long long)serial2);
|
|
}
|
|
if (ssh_krl_revoke_cert_by_serial_range(krl,
|
|
ca, serial, serial2) != 0) {
|
|
fatal("%s: revoke serial failed",
|
|
__func__);
|
|
}
|
|
} else if (strncasecmp(cp, "id:", 3) == 0) {
|
|
if (ca == NULL && !wild_ca) {
|
|
fatal("revoking certificates by key ID "
|
|
"requires specification of a CA key");
|
|
}
|
|
cp += 3;
|
|
cp = cp + strspn(cp, " \t");
|
|
if (ssh_krl_revoke_cert_by_key_id(krl, ca, cp) != 0)
|
|
fatal("%s: revoke key ID failed", __func__);
|
|
} else {
|
|
if (strncasecmp(cp, "key:", 4) == 0) {
|
|
cp += 4;
|
|
cp = cp + strspn(cp, " \t");
|
|
was_explicit_key = 1;
|
|
} else if (strncasecmp(cp, "sha1:", 5) == 0) {
|
|
cp += 5;
|
|
cp = cp + strspn(cp, " \t");
|
|
was_sha1 = 1;
|
|
} else {
|
|
/*
|
|
* Just try to process the line as a key.
|
|
* Parsing will fail if it isn't.
|
|
*/
|
|
}
|
|
if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
|
|
fatal("key_new");
|
|
if ((r = sshkey_read(key, &cp)) != 0)
|
|
fatal("%s:%lu: invalid key: %s",
|
|
path, lnum, ssh_err(r));
|
|
if (was_explicit_key)
|
|
r = ssh_krl_revoke_key_explicit(krl, key);
|
|
else if (was_sha1)
|
|
r = ssh_krl_revoke_key_sha1(krl, key);
|
|
else
|
|
r = ssh_krl_revoke_key(krl, key);
|
|
if (r != 0)
|
|
fatal("%s: revoke key failed: %s",
|
|
__func__, ssh_err(r));
|
|
sshkey_free(key);
|
|
}
|
|
}
|
|
if (strcmp(path, "-") != 0)
|
|
fclose(krl_spec);
|
|
free(path);
|
|
}
|
|
|
|
static void
|
|
do_gen_krl(struct passwd *pw, int updating, int argc, char **argv)
|
|
{
|
|
struct ssh_krl *krl;
|
|
struct stat sb;
|
|
struct sshkey *ca = NULL;
|
|
int fd, i, r, wild_ca = 0;
|
|
char *tmp;
|
|
struct sshbuf *kbuf;
|
|
|
|
if (*identity_file == '\0')
|
|
fatal("KRL generation requires an output file");
|
|
if (stat(identity_file, &sb) == -1) {
|
|
if (errno != ENOENT)
|
|
fatal("Cannot access KRL \"%s\": %s",
|
|
identity_file, strerror(errno));
|
|
if (updating)
|
|
fatal("KRL \"%s\" does not exist", identity_file);
|
|
}
|
|
if (ca_key_path != NULL) {
|
|
if (strcasecmp(ca_key_path, "none") == 0)
|
|
wild_ca = 1;
|
|
else {
|
|
tmp = tilde_expand_filename(ca_key_path, pw->pw_uid);
|
|
if ((r = sshkey_load_public(tmp, &ca, NULL)) != 0)
|
|
fatal("Cannot load CA public key %s: %s",
|
|
tmp, ssh_err(r));
|
|
free(tmp);
|
|
}
|
|
}
|
|
|
|
if (updating)
|
|
load_krl(identity_file, &krl);
|
|
else if ((krl = ssh_krl_init()) == NULL)
|
|
fatal("couldn't create KRL");
|
|
|
|
if (cert_serial != 0)
|
|
ssh_krl_set_version(krl, cert_serial);
|
|
if (identity_comment != NULL)
|
|
ssh_krl_set_comment(krl, identity_comment);
|
|
|
|
for (i = 0; i < argc; i++)
|
|
update_krl_from_file(pw, argv[i], wild_ca, ca, krl);
|
|
|
|
if ((kbuf = sshbuf_new()) == NULL)
|
|
fatal("sshbuf_new failed");
|
|
if (ssh_krl_to_blob(krl, kbuf, NULL, 0) != 0)
|
|
fatal("Couldn't generate KRL");
|
|
if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
|
|
fatal("open %s: %s", identity_file, strerror(errno));
|
|
if (atomicio(vwrite, fd, (void *)sshbuf_ptr(kbuf), sshbuf_len(kbuf)) !=
|
|
sshbuf_len(kbuf))
|
|
fatal("write %s: %s", identity_file, strerror(errno));
|
|
close(fd);
|
|
sshbuf_free(kbuf);
|
|
ssh_krl_free(krl);
|
|
sshkey_free(ca);
|
|
}
|
|
|
|
static void
|
|
do_check_krl(struct passwd *pw, int argc, char **argv)
|
|
{
|
|
int i, r, ret = 0;
|
|
char *comment;
|
|
struct ssh_krl *krl;
|
|
struct sshkey *k;
|
|
|
|
if (*identity_file == '\0')
|
|
fatal("KRL checking requires an input file");
|
|
load_krl(identity_file, &krl);
|
|
for (i = 0; i < argc; i++) {
|
|
if ((r = sshkey_load_public(argv[i], &k, &comment)) != 0)
|
|
fatal("Cannot load public key %s: %s",
|
|
argv[i], ssh_err(r));
|
|
r = ssh_krl_check_key(krl, k);
|
|
printf("%s%s%s%s: %s\n", argv[i],
|
|
*comment ? " (" : "", comment, *comment ? ")" : "",
|
|
r == 0 ? "ok" : "REVOKED");
|
|
if (r != 0)
|
|
ret = 1;
|
|
sshkey_free(k);
|
|
free(comment);
|
|
}
|
|
ssh_krl_free(krl);
|
|
exit(ret);
|
|
}
|
|
|
|
#ifdef WITH_SSH1
|
|
# define RSA1_USAGE " | rsa1"
|
|
#else
|
|
# define RSA1_USAGE ""
|
|
#endif
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,
|
|
"usage: ssh-keygen [-q] [-b bits] [-t dsa | ecdsa | ed25519 | rsa%s]\n"
|
|
" [-N new_passphrase] [-C comment] [-f output_keyfile]\n"
|
|
" ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]\n"
|
|
" ssh-keygen -i [-m key_format] [-f input_keyfile]\n"
|
|
" ssh-keygen -e [-m key_format] [-f input_keyfile]\n"
|
|
" ssh-keygen -y [-f input_keyfile]\n"
|
|
" ssh-keygen -c [-P passphrase] [-C comment] [-f keyfile]\n"
|
|
" ssh-keygen -l [-v] [-E fingerprint_hash] [-f input_keyfile]\n"
|
|
" ssh-keygen -B [-f input_keyfile]\n", RSA1_USAGE);
|
|
#ifdef ENABLE_PKCS11
|
|
fprintf(stderr,
|
|
" ssh-keygen -D pkcs11\n");
|
|
#endif
|
|
fprintf(stderr,
|
|
" ssh-keygen -F hostname [-f known_hosts_file] [-l]\n"
|
|
" ssh-keygen -H [-f known_hosts_file]\n"
|
|
" ssh-keygen -R hostname [-f known_hosts_file]\n"
|
|
" ssh-keygen -r hostname [-f input_keyfile] [-g]\n"
|
|
#ifdef WITH_OPENSSL
|
|
" ssh-keygen -G output_file [-v] [-b bits] [-M memory] [-S start_point]\n"
|
|
" ssh-keygen -T output_file -f input_file [-v] [-a rounds] [-J num_lines]\n"
|
|
" [-j start_line] [-K checkpt] [-W generator]\n"
|
|
#endif
|
|
" ssh-keygen -s ca_key -I certificate_identity [-h] [-n principals]\n"
|
|
" [-O option] [-V validity_interval] [-z serial_number] file ...\n"
|
|
" ssh-keygen -L [-f input_keyfile]\n"
|
|
" ssh-keygen -A\n"
|
|
" ssh-keygen -k -f krl_file [-u] [-s ca_public] [-z version_number]\n"
|
|
" file ...\n"
|
|
" ssh-keygen -Q -f krl_file file ...\n");
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Main program for key management.
|
|
*/
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
char dotsshdir[PATH_MAX], comment[1024], *passphrase1, *passphrase2;
|
|
char *rr_hostname = NULL, *ep, *fp, *ra;
|
|
struct sshkey *private, *public;
|
|
struct passwd *pw;
|
|
struct stat st;
|
|
int r, opt, type, fd;
|
|
int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
|
|
FILE *f;
|
|
const char *errstr;
|
|
#ifdef WITH_OPENSSL
|
|
/* Moduli generation/screening */
|
|
char out_file[PATH_MAX], *checkpoint = NULL;
|
|
u_int32_t memory = 0, generator_wanted = 0;
|
|
int do_gen_candidates = 0, do_screen_candidates = 0;
|
|
unsigned long start_lineno = 0, lines_to_process = 0;
|
|
BIGNUM *start = NULL;
|
|
#endif
|
|
|
|
extern int optind;
|
|
extern char *optarg;
|
|
|
|
ssh_malloc_init(); /* must be called before any mallocs */
|
|
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
|
|
sanitise_stdfd();
|
|
|
|
__progname = ssh_get_progname(argv[0]);
|
|
|
|
#ifdef WITH_OPENSSL
|
|
OpenSSL_add_all_algorithms();
|
|
#endif
|
|
log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1);
|
|
|
|
seed_rng();
|
|
|
|
msetlocale();
|
|
|
|
/* we need this for the home * directory. */
|
|
pw = getpwuid(getuid());
|
|
if (!pw)
|
|
fatal("No user exists for uid %lu", (u_long)getuid());
|
|
if (gethostname(hostname, sizeof(hostname)) < 0)
|
|
fatal("gethostname: %s", strerror(errno));
|
|
|
|
/* Remaining characters: UYdw */
|
|
while ((opt = getopt(argc, argv, "ABHLQXceghiklopquvxy"
|
|
"C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Z:"
|
|
"a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
|
|
switch (opt) {
|
|
case 'A':
|
|
gen_all_hostkeys = 1;
|
|
break;
|
|
case 'b':
|
|
bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr);
|
|
if (errstr)
|
|
fatal("Bits has bad value %s (%s)",
|
|
optarg, errstr);
|
|
break;
|
|
case 'E':
|
|
fingerprint_hash = ssh_digest_alg_by_name(optarg);
|
|
if (fingerprint_hash == -1)
|
|
fatal("Invalid hash algorithm \"%s\"", optarg);
|
|
break;
|
|
case 'F':
|
|
find_host = 1;
|
|
rr_hostname = optarg;
|
|
break;
|
|
case 'H':
|
|
hash_hosts = 1;
|
|
break;
|
|
case 'I':
|
|
cert_key_id = optarg;
|
|
break;
|
|
case 'R':
|
|
delete_host = 1;
|
|
rr_hostname = optarg;
|
|
break;
|
|
case 'L':
|
|
show_cert = 1;
|
|
break;
|
|
case 'l':
|
|
print_fingerprint = 1;
|
|
break;
|
|
case 'B':
|
|
print_bubblebabble = 1;
|
|
break;
|
|
case 'm':
|
|
if (strcasecmp(optarg, "RFC4716") == 0 ||
|
|
strcasecmp(optarg, "ssh2") == 0) {
|
|
convert_format = FMT_RFC4716;
|
|
break;
|
|
}
|
|
if (strcasecmp(optarg, "PKCS8") == 0) {
|
|
convert_format = FMT_PKCS8;
|
|
break;
|
|
}
|
|
if (strcasecmp(optarg, "PEM") == 0) {
|
|
convert_format = FMT_PEM;
|
|
break;
|
|
}
|
|
fatal("Unsupported conversion format \"%s\"", optarg);
|
|
case 'n':
|
|
cert_principals = optarg;
|
|
break;
|
|
case 'o':
|
|
use_new_format = 1;
|
|
break;
|
|
case 'p':
|
|
change_passphrase = 1;
|
|
break;
|
|
case 'c':
|
|
change_comment = 1;
|
|
break;
|
|
case 'f':
|
|
if (strlcpy(identity_file, optarg,
|
|
sizeof(identity_file)) >= sizeof(identity_file))
|
|
fatal("Identity filename too long");
|
|
have_identity = 1;
|
|
break;
|
|
case 'g':
|
|
print_generic = 1;
|
|
break;
|
|
case 'P':
|
|
identity_passphrase = optarg;
|
|
break;
|
|
case 'N':
|
|
identity_new_passphrase = optarg;
|
|
break;
|
|
case 'Q':
|
|
check_krl = 1;
|
|
break;
|
|
case 'O':
|
|
add_cert_option(optarg);
|
|
break;
|
|
case 'Z':
|
|
new_format_cipher = optarg;
|
|
break;
|
|
case 'C':
|
|
identity_comment = optarg;
|
|
break;
|
|
case 'q':
|
|
quiet = 1;
|
|
break;
|
|
case 'e':
|
|
case 'x':
|
|
/* export key */
|
|
convert_to = 1;
|
|
break;
|
|
case 'h':
|
|
cert_key_type = SSH2_CERT_TYPE_HOST;
|
|
certflags_flags = 0;
|
|
break;
|
|
case 'k':
|
|
gen_krl = 1;
|
|
break;
|
|
case 'i':
|
|
case 'X':
|
|
/* import key */
|
|
convert_from = 1;
|
|
break;
|
|
case 'y':
|
|
print_public = 1;
|
|
break;
|
|
case 's':
|
|
ca_key_path = optarg;
|
|
break;
|
|
case 't':
|
|
key_type_name = optarg;
|
|
break;
|
|
case 'D':
|
|
pkcs11provider = optarg;
|
|
break;
|
|
case 'u':
|
|
update_krl = 1;
|
|
break;
|
|
case 'v':
|
|
if (log_level == SYSLOG_LEVEL_INFO)
|
|
log_level = SYSLOG_LEVEL_DEBUG1;
|
|
else {
|
|
if (log_level >= SYSLOG_LEVEL_DEBUG1 &&
|
|
log_level < SYSLOG_LEVEL_DEBUG3)
|
|
log_level++;
|
|
}
|
|
break;
|
|
case 'r':
|
|
rr_hostname = optarg;
|
|
break;
|
|
case 'a':
|
|
rounds = (int)strtonum(optarg, 1, INT_MAX, &errstr);
|
|
if (errstr)
|
|
fatal("Invalid number: %s (%s)",
|
|
optarg, errstr);
|
|
break;
|
|
case 'V':
|
|
parse_cert_times(optarg);
|
|
break;
|
|
case 'z':
|
|
errno = 0;
|
|
cert_serial = strtoull(optarg, &ep, 10);
|
|
if (*optarg < '0' || *optarg > '9' || *ep != '\0' ||
|
|
(errno == ERANGE && cert_serial == ULLONG_MAX))
|
|
fatal("Invalid serial number \"%s\"", optarg);
|
|
break;
|
|
#ifdef WITH_OPENSSL
|
|
/* Moduli generation/screening */
|
|
case 'G':
|
|
do_gen_candidates = 1;
|
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >=
|
|
sizeof(out_file))
|
|
fatal("Output filename too long");
|
|
break;
|
|
case 'J':
|
|
lines_to_process = strtoul(optarg, NULL, 10);
|
|
break;
|
|
case 'j':
|
|
start_lineno = strtoul(optarg, NULL, 10);
|
|
break;
|
|
case 'K':
|
|
if (strlen(optarg) >= PATH_MAX)
|
|
fatal("Checkpoint filename too long");
|
|
checkpoint = xstrdup(optarg);
|
|
break;
|
|
case 'M':
|
|
memory = (u_int32_t)strtonum(optarg, 1, UINT_MAX,
|
|
&errstr);
|
|
if (errstr)
|
|
fatal("Memory limit is %s: %s", errstr, optarg);
|
|
break;
|
|
case 'S':
|
|
/* XXX - also compare length against bits */
|
|
if (BN_hex2bn(&start, optarg) == 0)
|
|
fatal("Invalid start point.");
|
|
break;
|
|
case 'T':
|
|
do_screen_candidates = 1;
|
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >=
|
|
sizeof(out_file))
|
|
fatal("Output filename too long");
|
|
break;
|
|
case 'W':
|
|
generator_wanted = (u_int32_t)strtonum(optarg, 1,
|
|
UINT_MAX, &errstr);
|
|
if (errstr != NULL)
|
|
fatal("Desired generator invalid: %s (%s)",
|
|
optarg, errstr);
|
|
break;
|
|
#endif /* WITH_OPENSSL */
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
/* reinit */
|
|
log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1);
|
|
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
if (ca_key_path != NULL) {
|
|
if (argc < 1 && !gen_krl) {
|
|
error("Too few arguments.");
|
|
usage();
|
|
}
|
|
} else if (argc > 0 && !gen_krl && !check_krl) {
|
|
error("Too many arguments.");
|
|
usage();
|
|
}
|
|
if (change_passphrase && change_comment) {
|
|
error("Can only have one of -p and -c.");
|
|
usage();
|
|
}
|
|
if (print_fingerprint && (delete_host || hash_hosts)) {
|
|
error("Cannot use -l with -H or -R.");
|
|
usage();
|
|
}
|
|
if (gen_krl) {
|
|
do_gen_krl(pw, update_krl, argc, argv);
|
|
return (0);
|
|
}
|
|
if (check_krl) {
|
|
do_check_krl(pw, argc, argv);
|
|
return (0);
|
|
}
|
|
if (ca_key_path != NULL) {
|
|
if (cert_key_id == NULL)
|
|
fatal("Must specify key id (-I) when certifying");
|
|
do_ca_sign(pw, argc, argv);
|
|
}
|
|
if (show_cert)
|
|
do_show_cert(pw);
|
|
if (delete_host || hash_hosts || find_host)
|
|
do_known_hosts(pw, rr_hostname);
|
|
if (pkcs11provider != NULL)
|
|
do_download(pw);
|
|
if (print_fingerprint || print_bubblebabble)
|
|
do_fingerprint(pw);
|
|
if (change_passphrase)
|
|
do_change_passphrase(pw);
|
|
if (change_comment)
|
|
do_change_comment(pw);
|
|
#ifdef WITH_OPENSSL
|
|
if (convert_to)
|
|
do_convert_to(pw);
|
|
if (convert_from)
|
|
do_convert_from(pw);
|
|
#endif
|
|
if (print_public)
|
|
do_print_public(pw);
|
|
if (rr_hostname != NULL) {
|
|
unsigned int n = 0;
|
|
|
|
if (have_identity) {
|
|
n = do_print_resource_record(pw,
|
|
identity_file, rr_hostname);
|
|
if (n == 0)
|
|
fatal("%s: %s", identity_file, strerror(errno));
|
|
exit(0);
|
|
} else {
|
|
|
|
n += do_print_resource_record(pw,
|
|
_PATH_HOST_RSA_KEY_FILE, rr_hostname);
|
|
n += do_print_resource_record(pw,
|
|
_PATH_HOST_DSA_KEY_FILE, rr_hostname);
|
|
n += do_print_resource_record(pw,
|
|
_PATH_HOST_ECDSA_KEY_FILE, rr_hostname);
|
|
n += do_print_resource_record(pw,
|
|
_PATH_HOST_ED25519_KEY_FILE, rr_hostname);
|
|
if (n == 0)
|
|
fatal("no keys found.");
|
|
exit(0);
|
|
}
|
|
}
|
|
|
|
#ifdef WITH_OPENSSL
|
|
if (do_gen_candidates) {
|
|
FILE *out = fopen(out_file, "w");
|
|
|
|
if (out == NULL) {
|
|
error("Couldn't open modulus candidate file \"%s\": %s",
|
|
out_file, strerror(errno));
|
|
return (1);
|
|
}
|
|
if (bits == 0)
|
|
bits = DEFAULT_BITS;
|
|
if (gen_candidates(out, memory, bits, start) != 0)
|
|
fatal("modulus candidate generation failed");
|
|
|
|
return (0);
|
|
}
|
|
|
|
if (do_screen_candidates) {
|
|
FILE *in;
|
|
FILE *out = fopen(out_file, "a");
|
|
|
|
if (have_identity && strcmp(identity_file, "-") != 0) {
|
|
if ((in = fopen(identity_file, "r")) == NULL) {
|
|
fatal("Couldn't open modulus candidate "
|
|
"file \"%s\": %s", identity_file,
|
|
strerror(errno));
|
|
}
|
|
} else
|
|
in = stdin;
|
|
|
|
if (out == NULL) {
|
|
fatal("Couldn't open moduli file \"%s\": %s",
|
|
out_file, strerror(errno));
|
|
}
|
|
if (prime_test(in, out, rounds == 0 ? 100 : rounds,
|
|
generator_wanted, checkpoint,
|
|
start_lineno, lines_to_process) != 0)
|
|
fatal("modulus screening failed");
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
if (gen_all_hostkeys) {
|
|
do_gen_all_hostkeys(pw);
|
|
return (0);
|
|
}
|
|
|
|
if (key_type_name == NULL)
|
|
key_type_name = DEFAULT_KEY_TYPE_NAME;
|
|
|
|
type = sshkey_type_from_name(key_type_name);
|
|
type_bits_valid(type, key_type_name, &bits);
|
|
|
|
if (!quiet)
|
|
printf("Generating public/private %s key pair.\n",
|
|
key_type_name);
|
|
if ((r = sshkey_generate(type, bits, &private)) != 0)
|
|
fatal("key_generate failed");
|
|
if ((r = sshkey_from_private(private, &public)) != 0)
|
|
fatal("key_from_private failed: %s\n", ssh_err(r));
|
|
|
|
if (!have_identity)
|
|
ask_filename(pw, "Enter file in which to save the key");
|
|
|
|
/* Create ~/.ssh directory if it doesn't already exist. */
|
|
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s",
|
|
pw->pw_dir, _PATH_SSH_USER_DIR);
|
|
if (strstr(identity_file, dotsshdir) != NULL) {
|
|
if (stat(dotsshdir, &st) < 0) {
|
|
if (errno != ENOENT) {
|
|
error("Could not stat %s: %s", dotsshdir,
|
|
strerror(errno));
|
|
} else if (mkdir(dotsshdir, 0700) < 0) {
|
|
error("Could not create directory '%s': %s",
|
|
dotsshdir, strerror(errno));
|
|
} else if (!quiet)
|
|
printf("Created directory '%s'.\n", dotsshdir);
|
|
}
|
|
}
|
|
/* If the file already exists, ask the user to confirm. */
|
|
if (stat(identity_file, &st) >= 0) {
|
|
char yesno[3];
|
|
printf("%s already exists.\n", identity_file);
|
|
printf("Overwrite (y/n)? ");
|
|
fflush(stdout);
|
|
if (fgets(yesno, sizeof(yesno), stdin) == NULL)
|
|
exit(1);
|
|
if (yesno[0] != 'y' && yesno[0] != 'Y')
|
|
exit(1);
|
|
}
|
|
/* Ask for a passphrase (twice). */
|
|
if (identity_passphrase)
|
|
passphrase1 = xstrdup(identity_passphrase);
|
|
else if (identity_new_passphrase)
|
|
passphrase1 = xstrdup(identity_new_passphrase);
|
|
else {
|
|
passphrase_again:
|
|
passphrase1 =
|
|
read_passphrase("Enter passphrase (empty for no "
|
|
"passphrase): ", RP_ALLOW_STDIN);
|
|
passphrase2 = read_passphrase("Enter same passphrase again: ",
|
|
RP_ALLOW_STDIN);
|
|
if (strcmp(passphrase1, passphrase2) != 0) {
|
|
/*
|
|
* The passphrases do not match. Clear them and
|
|
* retry.
|
|
*/
|
|
explicit_bzero(passphrase1, strlen(passphrase1));
|
|
explicit_bzero(passphrase2, strlen(passphrase2));
|
|
free(passphrase1);
|
|
free(passphrase2);
|
|
printf("Passphrases do not match. Try again.\n");
|
|
goto passphrase_again;
|
|
}
|
|
/* Clear the other copy of the passphrase. */
|
|
explicit_bzero(passphrase2, strlen(passphrase2));
|
|
free(passphrase2);
|
|
}
|
|
|
|
if (identity_comment) {
|
|
strlcpy(comment, identity_comment, sizeof(comment));
|
|
} else {
|
|
/* Create default comment field for the passphrase. */
|
|
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname);
|
|
}
|
|
|
|
/* Save the key with the given passphrase and comment. */
|
|
if ((r = sshkey_save_private(private, identity_file, passphrase1,
|
|
comment, use_new_format, new_format_cipher, rounds)) != 0) {
|
|
error("Saving key \"%s\" failed: %s",
|
|
identity_file, ssh_err(r));
|
|
explicit_bzero(passphrase1, strlen(passphrase1));
|
|
free(passphrase1);
|
|
exit(1);
|
|
}
|
|
/* Clear the passphrase. */
|
|
explicit_bzero(passphrase1, strlen(passphrase1));
|
|
free(passphrase1);
|
|
|
|
/* Clear the private key and the random number generator. */
|
|
sshkey_free(private);
|
|
|
|
if (!quiet)
|
|
printf("Your identification has been saved in %s.\n", identity_file);
|
|
|
|
strlcat(identity_file, ".pub", sizeof(identity_file));
|
|
if ((fd = open(identity_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
|
|
fatal("Unable to save public key to %s: %s",
|
|
identity_file, strerror(errno));
|
|
if ((f = fdopen(fd, "w")) == NULL)
|
|
fatal("fdopen %s failed: %s", identity_file, strerror(errno));
|
|
if ((r = sshkey_write(public, f)) != 0)
|
|
error("write key failed: %s", ssh_err(r));
|
|
fprintf(f, " %s\n", comment);
|
|
fclose(f);
|
|
|
|
if (!quiet) {
|
|
fp = sshkey_fingerprint(public, fingerprint_hash,
|
|
SSH_FP_DEFAULT);
|
|
ra = sshkey_fingerprint(public, fingerprint_hash,
|
|
SSH_FP_RANDOMART);
|
|
if (fp == NULL || ra == NULL)
|
|
fatal("sshkey_fingerprint failed");
|
|
printf("Your public key has been saved in %s.\n",
|
|
identity_file);
|
|
printf("The key fingerprint is:\n");
|
|
printf("%s %s\n", fp, comment);
|
|
printf("The key's randomart image is:\n");
|
|
printf("%s\n", ra);
|
|
free(ra);
|
|
free(fp);
|
|
}
|
|
|
|
sshkey_free(public);
|
|
exit(0);
|
|
}
|