version 1.38, 2000/12/28 18:58:39 |
version 1.194, 2010/06/30 07:26:03 |
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/* $OpenBSD$ */ |
/* |
/* |
* Author: Tatu Ylonen <ylo@cs.hut.fi> |
* Author: Tatu Ylonen <ylo@cs.hut.fi> |
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
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* called by a name other than "ssh" or "Secure Shell". |
* called by a name other than "ssh" or "Secure Shell". |
*/ |
*/ |
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#include "includes.h" |
#include <sys/types.h> |
RCSID("$OpenBSD$"); |
#include <sys/socket.h> |
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#include <sys/stat.h> |
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#include <sys/param.h> |
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#include <openssl/evp.h> |
#include <openssl/evp.h> |
#include <openssl/pem.h> |
#include <openssl/pem.h> |
#include <openssl/rsa.h> |
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#include <openssl/dsa.h> |
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#include "ssh.h" |
#include <errno.h> |
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#include <fcntl.h> |
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#include <pwd.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 "xmalloc.h" |
#include "xmalloc.h" |
#include "key.h" |
#include "key.h" |
#include "rsa.h" |
#include "rsa.h" |
#include "authfile.h" |
#include "authfile.h" |
#include "uuencode.h" |
#include "uuencode.h" |
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#include "buffer.h" |
#include "buffer.h" |
#include "bufaux.h" |
#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 "ssh2.h" |
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/* Number of bits in the RSA/DSA key. This value can be changed on the command line. */ |
#ifdef ENABLE_PKCS11 |
int bits = 1024; |
#include "ssh-pkcs11.h" |
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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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u_int32_t bits = 0; |
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/* |
/* |
* Flag indicating that we just want to change the passphrase. This can be |
* Flag indicating that we just want to change the passphrase. This can be |
* set on the command line. |
* set on the command line. |
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int quiet = 0; |
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 */ |
/* Flag indicating that we just want to see the key fingerprint */ |
int print_fingerprint = 0; |
int print_fingerprint = 0; |
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int print_bubblebabble = 0; |
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/* The identity file name, given on the command line or entered by the user. */ |
/* The identity file name, given on the command line or entered by the user. */ |
char identity_file[1024]; |
char identity_file[1024]; |
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/* This is set to the new comment if given on the command line. */ |
/* This is set to the new comment if given on the command line. */ |
char *identity_comment = NULL; |
char *identity_comment = NULL; |
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/* Dump public key file in format used by real and the original SSH 2 */ |
/* Path to CA key when certifying keys. */ |
int convert_to_ssh2 = 0; |
char *ca_key_path = NULL; |
int convert_from_ssh2 = 0; |
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/* Certificate serial number */ |
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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; |
int print_public = 0; |
int print_public = 0; |
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int print_generic = 0; |
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/* default to RSA for SSH-1 */ |
char *key_type_name = NULL; |
char *key_type_name = "rsa1"; |
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/* argv0 */ |
/* argv0 */ |
extern char *__progname; |
extern char *__progname; |
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char hostname[MAXHOSTNAMELEN]; |
char hostname[MAXHOSTNAMELEN]; |
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void |
/* 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); |
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static void |
ask_filename(struct passwd *pw, const char *prompt) |
ask_filename(struct passwd *pw, const char *prompt) |
{ |
{ |
char buf[1024]; |
char buf[1024]; |
char *name = NULL; |
char *name = NULL; |
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switch (key_type_from_name(key_type_name)) { |
if (key_type_name == NULL) |
case KEY_RSA1: |
name = _PATH_SSH_CLIENT_ID_RSA; |
name = SSH_CLIENT_IDENTITY; |
else { |
break; |
switch (key_type_from_name(key_type_name)) { |
case KEY_DSA: |
case KEY_RSA1: |
name = SSH_CLIENT_ID_DSA; |
name = _PATH_SSH_CLIENT_IDENTITY; |
break; |
break; |
case KEY_RSA: |
case KEY_DSA_CERT: |
name = SSH_CLIENT_ID_RSA; |
case KEY_DSA_CERT_V00: |
break; |
case KEY_DSA: |
default: |
name = _PATH_SSH_CLIENT_ID_DSA; |
fprintf(stderr, "bad key type"); |
break; |
exit(1); |
case KEY_RSA_CERT: |
break; |
case KEY_RSA_CERT_V00: |
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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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default: |
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fprintf(stderr, "bad key type\n"); |
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exit(1); |
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break; |
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} |
} |
} |
snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
fprintf(stderr, "%s (%s): ", prompt, identity_file); |
fprintf(stderr, "%s (%s): ", prompt, identity_file); |
fflush(stderr); |
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if (fgets(buf, sizeof(buf), stdin) == NULL) |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
exit(1); |
exit(1); |
if (strchr(buf, '\n')) |
buf[strcspn(buf, "\n")] = '\0'; |
*strchr(buf, '\n') = 0; |
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if (strcmp(buf, "") != 0) |
if (strcmp(buf, "") != 0) |
strlcpy(identity_file, buf, sizeof(identity_file)); |
strlcpy(identity_file, buf, sizeof(identity_file)); |
have_identity = 1; |
have_identity = 1; |
} |
} |
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int |
static Key * |
try_load_key(char *filename, Key *k) |
load_identity(char *filename) |
{ |
{ |
int success = 1; |
char *pass; |
if (!load_private_key(filename, "", k, NULL)) { |
Key *prv; |
char *pass = read_passphrase("Enter passphrase: ", 1); |
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if (!load_private_key(filename, pass, k, NULL)) { |
prv = key_load_private(filename, "", NULL); |
success = 0; |
if (prv == NULL) { |
} |
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: ", |
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RP_ALLOW_STDIN); |
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prv = key_load_private(filename, pass, NULL); |
memset(pass, 0, strlen(pass)); |
memset(pass, 0, strlen(pass)); |
xfree(pass); |
xfree(pass); |
} |
} |
return success; |
return prv; |
} |
} |
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#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" |
#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" |
#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" |
#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" |
#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb |
#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb |
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void |
static void |
do_convert_to_ssh2(struct passwd *pw) |
do_convert_to_ssh2(struct passwd *pw, Key *k) |
{ |
{ |
Key *k; |
u_int len; |
int len; |
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u_char *blob; |
u_char *blob; |
struct stat st; |
char comment[61]; |
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if (!have_identity) |
if (key_to_blob(k, &blob, &len) <= 0) { |
ask_filename(pw, "Enter file in which the key is"); |
fprintf(stderr, "key_to_blob failed\n"); |
if (stat(identity_file, &st) < 0) { |
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perror(identity_file); |
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exit(1); |
exit(1); |
} |
} |
k = key_new(KEY_UNSPEC); |
/* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */ |
if (!try_load_key(identity_file, k)) { |
snprintf(comment, sizeof(comment), |
fprintf(stderr, "load failed\n"); |
"%u-bit %s, converted by %s@%s from OpenSSH", |
exit(1); |
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} |
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key_to_blob(k, &blob, &len); |
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fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
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fprintf(stdout, |
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"Comment: \"%d-bit %s, converted from OpenSSH by %s@%s\"\n", |
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key_size(k), key_type(k), |
key_size(k), key_type(k), |
pw->pw_name, hostname); |
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); |
dump_base64(stdout, blob, len); |
dump_base64(stdout, blob, len); |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); |
key_free(k); |
key_free(k); |
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exit(0); |
exit(0); |
} |
} |
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void |
static void |
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do_convert_to_pkcs8(Key *k) |
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{ |
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switch (key_type_plain(k->type)) { |
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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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default: |
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fatal("%s: unsupported key type %s", __func__, key_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(Key *k) |
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{ |
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switch (key_type_plain(k->type)) { |
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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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default: |
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fatal("%s: unsupported key type %s", __func__, key_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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Key *k; |
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struct stat st; |
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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 ((k = key_load_public(identity_file, NULL)) == NULL) { |
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if ((k = load_identity(identity_file)) == NULL) { |
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fprintf(stderr, "load failed\n"); |
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exit(1); |
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} |
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} |
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if (k->type == KEY_RSA1) { |
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fprintf(stderr, "version 1 keys are not supported\n"); |
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exit(1); |
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} |
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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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static void |
buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
{ |
{ |
int bits = buffer_get_int(b); |
u_int bignum_bits = buffer_get_int(b); |
int bytes = (bits + 7) / 8; |
u_int bytes = (bignum_bits + 7) / 8; |
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if (buffer_len(b) < bytes) |
if (buffer_len(b) < bytes) |
fatal("buffer_get_bignum_bits: input buffer too small"); |
fatal("buffer_get_bignum_bits: input buffer too small: " |
BN_bin2bn((u_char *)buffer_ptr(b), bytes, value); |
"need %d have %d", bytes, buffer_len(b)); |
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if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL) |
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fatal("buffer_get_bignum_bits: BN_bin2bn failed"); |
buffer_consume(b, bytes); |
buffer_consume(b, bytes); |
} |
} |
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Key * |
static Key * |
do_convert_private_ssh2_from_blob(char *blob, int blen) |
do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) |
{ |
{ |
Buffer b; |
Buffer b; |
DSA *dsa; |
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Key *key = NULL; |
Key *key = NULL; |
int ignore, magic, rlen; |
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char *type, *cipher; |
char *type, *cipher; |
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u_char *sig, data[] = "abcde12345"; |
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int magic, rlen, ktype, i1, i2, i3, i4; |
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u_int slen; |
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u_long e; |
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buffer_init(&b); |
buffer_init(&b); |
buffer_append(&b, blob, blen); |
buffer_append(&b, blob, blen); |
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magic = buffer_get_int(&b); |
magic = buffer_get_int(&b); |
if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { |
if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { |
error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); |
error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); |
buffer_free(&b); |
buffer_free(&b); |
return NULL; |
return NULL; |
} |
} |
ignore = buffer_get_int(&b); |
i1 = buffer_get_int(&b); |
type = buffer_get_string(&b, NULL); |
type = buffer_get_string(&b, NULL); |
cipher = buffer_get_string(&b, NULL); |
cipher = buffer_get_string(&b, NULL); |
ignore = buffer_get_int(&b); |
i2 = buffer_get_int(&b); |
ignore = buffer_get_int(&b); |
i3 = buffer_get_int(&b); |
ignore = buffer_get_int(&b); |
i4 = buffer_get_int(&b); |
xfree(type); |
debug("ignore (%d %d %d %d)", i1, i2, i3, i4); |
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if (strcmp(cipher, "none") != 0) { |
if (strcmp(cipher, "none") != 0) { |
error("unsupported cipher %s", cipher); |
error("unsupported cipher %s", cipher); |
xfree(cipher); |
xfree(cipher); |
buffer_free(&b); |
buffer_free(&b); |
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xfree(type); |
return NULL; |
return NULL; |
} |
} |
xfree(cipher); |
xfree(cipher); |
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key = key_new(KEY_DSA); |
if (strstr(type, "dsa")) { |
dsa = key->dsa; |
ktype = KEY_DSA; |
dsa->priv_key = BN_new(); |
} else if (strstr(type, "rsa")) { |
if (dsa->priv_key == NULL) { |
ktype = KEY_RSA; |
error("alloc priv_key failed"); |
} else { |
key_free(key); |
buffer_free(&b); |
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xfree(type); |
return NULL; |
return NULL; |
} |
} |
buffer_get_bignum_bits(&b, dsa->p); |
key = key_new_private(ktype); |
buffer_get_bignum_bits(&b, dsa->g); |
xfree(type); |
buffer_get_bignum_bits(&b, dsa->q); |
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buffer_get_bignum_bits(&b, dsa->pub_key); |
switch (key->type) { |
buffer_get_bignum_bits(&b, dsa->priv_key); |
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); |
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buffer_get_bignum_bits(&b, key->dsa->priv_key); |
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break; |
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case KEY_RSA: |
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e = buffer_get_char(&b); |
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debug("e %lx", e); |
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if (e < 30) { |
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e <<= 8; |
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e += buffer_get_char(&b); |
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debug("e %lx", e); |
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e <<= 8; |
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e += buffer_get_char(&b); |
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debug("e %lx", e); |
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} |
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if (!BN_set_word(key->rsa->e, e)) { |
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buffer_free(&b); |
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key_free(key); |
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return NULL; |
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} |
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buffer_get_bignum_bits(&b, key->rsa->d); |
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buffer_get_bignum_bits(&b, key->rsa->n); |
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buffer_get_bignum_bits(&b, key->rsa->iqmp); |
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buffer_get_bignum_bits(&b, key->rsa->q); |
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buffer_get_bignum_bits(&b, key->rsa->p); |
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rsa_generate_additional_parameters(key->rsa); |
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break; |
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} |
rlen = buffer_len(&b); |
rlen = buffer_len(&b); |
if(rlen != 0) |
if (rlen != 0) |
error("do_convert_private_ssh2_from_blob: remaining bytes in key blob %d", rlen); |
error("do_convert_private_ssh2_from_blob: " |
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"remaining bytes in key blob %d", rlen); |
buffer_free(&b); |
buffer_free(&b); |
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/* try the key */ |
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key_sign(key, &sig, &slen, data, sizeof(data)); |
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key_verify(key, sig, slen, data, sizeof(data)); |
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xfree(sig); |
return key; |
return key; |
} |
} |
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void |
static int |
do_convert_from_ssh2(struct passwd *pw) |
get_line(FILE *fp, char *line, size_t len) |
{ |
{ |
Key *k; |
int c; |
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size_t pos = 0; |
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line[0] = '\0'; |
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while ((c = fgetc(fp)) != EOF) { |
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if (pos >= len - 1) { |
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fprintf(stderr, "input line too long.\n"); |
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exit(1); |
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} |
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switch (c) { |
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case '\r': |
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c = fgetc(fp); |
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if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) { |
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fprintf(stderr, "unget: %s\n", strerror(errno)); |
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exit(1); |
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} |
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return pos; |
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case '\n': |
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return pos; |
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} |
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line[pos++] = c; |
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line[pos] = '\0'; |
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} |
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/* We reached EOF */ |
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return -1; |
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} |
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static void |
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do_convert_from_ssh2(struct passwd *pw, Key **k, int *private) |
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{ |
int blen; |
int blen; |
char line[1024], *p; |
u_int len; |
char blob[8096]; |
char line[1024]; |
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u_char blob[8096]; |
char encoded[8096]; |
char encoded[8096]; |
struct stat st; |
int escaped = 0; |
int escaped = 0, private = 0, ok; |
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FILE *fp; |
FILE *fp; |
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if (!have_identity) |
if ((fp = fopen(identity_file, "r")) == NULL) |
ask_filename(pw, "Enter file in which the key is"); |
fatal("%s: %s: %s", __progname, identity_file, strerror(errno)); |
if (stat(identity_file, &st) < 0) { |
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perror(identity_file); |
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exit(1); |
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} |
|
fp = fopen(identity_file, "r"); |
|
if (fp == NULL) { |
|
perror(identity_file); |
|
exit(1); |
|
} |
|
encoded[0] = '\0'; |
encoded[0] = '\0'; |
while (fgets(line, sizeof(line), fp)) { |
while ((blen = get_line(fp, line, sizeof(line))) != -1) { |
if (!(p = strchr(line, '\n'))) { |
if (line[blen - 1] == '\\') |
fprintf(stderr, "input line too long.\n"); |
|
exit(1); |
|
} |
|
if (p > line && p[-1] == '\\') |
|
escaped++; |
escaped++; |
if (strncmp(line, "----", 4) == 0 || |
if (strncmp(line, "----", 4) == 0 || |
strstr(line, ": ") != NULL) { |
strstr(line, ": ") != NULL) { |
if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) |
if (strstr(line, SSH_COM_PRIVATE_BEGIN) != NULL) |
private = 1; |
*private = 1; |
fprintf(stderr, "ignore: %s", line); |
if (strstr(line, " END ") != NULL) { |
|
break; |
|
} |
|
/* fprintf(stderr, "ignore: %s", line); */ |
continue; |
continue; |
} |
} |
if (escaped) { |
if (escaped) { |
escaped--; |
escaped--; |
fprintf(stderr, "escaped: %s", line); |
/* fprintf(stderr, "escaped: %s", line); */ |
continue; |
continue; |
} |
} |
*p = '\0'; |
|
strlcat(encoded, line, sizeof(encoded)); |
strlcat(encoded, line, sizeof(encoded)); |
} |
} |
blen = uudecode(encoded, (u_char *)blob, sizeof(blob)); |
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) { |
if (blen < 0) { |
fprintf(stderr, "uudecode failed.\n"); |
fprintf(stderr, "uudecode failed.\n"); |
exit(1); |
exit(1); |
} |
} |
k = private ? |
*k = *private ? |
do_convert_private_ssh2_from_blob(blob, blen) : |
do_convert_private_ssh2_from_blob(blob, blen) : |
key_from_blob(blob, blen); |
key_from_blob(blob, blen); |
if (k == NULL) { |
if (*k == NULL) { |
fprintf(stderr, "decode blob failed.\n"); |
fprintf(stderr, "decode blob failed.\n"); |
exit(1); |
exit(1); |
} |
} |
ok = private ? |
fclose(fp); |
PEM_write_DSAPrivateKey(stdout, k->dsa, NULL, NULL, 0, NULL, NULL) : |
} |
key_write(k, stdout); |
|
|
static void |
|
do_convert_from_pkcs8(Key **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: |
|
*k = key_new(KEY_UNSPEC); |
|
(*k)->type = KEY_RSA; |
|
(*k)->rsa = EVP_PKEY_get1_RSA(pubkey); |
|
break; |
|
case EVP_PKEY_DSA: |
|
*k = key_new(KEY_UNSPEC); |
|
(*k)->type = KEY_DSA; |
|
(*k)->dsa = EVP_PKEY_get1_DSA(pubkey); |
|
break; |
|
default: |
|
fatal("%s: unsupported pubkey type %d", __func__, |
|
EVP_PKEY_type(pubkey->type)); |
|
} |
|
EVP_PKEY_free(pubkey); |
|
return; |
|
} |
|
|
|
static void |
|
do_convert_from_pem(Key **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) { |
|
*k = key_new(KEY_UNSPEC); |
|
(*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) { |
|
*k = key_new(KEY_UNSPEC); |
|
(*k)->type = KEY_DSA; |
|
(*k)->dsa = dsa; |
|
fclose(fp); |
|
return; |
|
} |
|
#endif |
|
fatal("%s: unrecognised raw private key format", __func__); |
|
} |
|
|
|
static void |
|
do_convert_from(struct passwd *pw) |
|
{ |
|
Key *k = NULL; |
|
int private = 0, ok; |
|
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) |
|
ok = key_write(k, stdout); |
|
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; |
|
case KEY_RSA: |
|
ok = PEM_write_RSAPrivateKey(stdout, k->rsa, NULL, |
|
NULL, 0, NULL, NULL); |
|
break; |
|
default: |
|
fatal("%s: unsupported key type %s", __func__, |
|
key_type(k)); |
|
} |
|
} |
|
|
if (!ok) { |
if (!ok) { |
fprintf(stderr, "key write failed"); |
fprintf(stderr, "key write failed\n"); |
exit(1); |
exit(1); |
} |
} |
key_free(k); |
key_free(k); |
fprintf(stdout, "\n"); |
|
fclose(fp); |
|
exit(0); |
exit(0); |
} |
} |
|
|
void |
static void |
do_print_public(struct passwd *pw) |
do_print_public(struct passwd *pw) |
{ |
{ |
Key *k; |
Key *prv; |
struct stat st; |
struct stat st; |
|
|
if (!have_identity) |
if (!have_identity) |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
k = key_new(KEY_UNSPEC); |
prv = load_identity(identity_file); |
if (!try_load_key(identity_file, k)) { |
if (prv == NULL) { |
fprintf(stderr, "load failed\n"); |
fprintf(stderr, "load failed\n"); |
exit(1); |
exit(1); |
} |
} |
if (!key_write(k, stdout)) |
if (!key_write(prv, stdout)) |
fprintf(stderr, "key_write failed"); |
fprintf(stderr, "key_write failed"); |
key_free(k); |
key_free(prv); |
fprintf(stdout, "\n"); |
fprintf(stdout, "\n"); |
exit(0); |
exit(0); |
} |
} |
|
|
void |
static void |
do_fingerprint(struct passwd *pw) |
do_download(struct passwd *pw, char *pkcs11provider) |
{ |
{ |
|
#ifdef ENABLE_PKCS11 |
|
Key **keys = NULL; |
|
int i, nkeys; |
|
|
|
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++) { |
|
key_write(keys[i], stdout); |
|
key_free(keys[i]); |
|
fprintf(stdout, "\n"); |
|
} |
|
xfree(keys); |
|
pkcs11_terminate(); |
|
exit(0); |
|
#else |
|
fatal("no pkcs11 support"); |
|
#endif /* ENABLE_PKCS11 */ |
|
} |
|
|
|
static void |
|
do_fingerprint(struct passwd *pw) |
|
{ |
FILE *f; |
FILE *f; |
Key *public; |
Key *public; |
char *comment = NULL, *cp, *ep, line[16*1024]; |
char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra; |
int i, skip = 0, num = 1, invalid = 1, success = 0; |
int i, skip = 0, num = 0, invalid = 1; |
|
enum fp_rep rep; |
|
enum fp_type fptype; |
struct stat st; |
struct stat st; |
|
|
|
fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; |
|
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
if (stat(identity_file, &st) < 0) { |
if (stat(identity_file, &st) < 0) { |
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
public = key_new(KEY_RSA1); |
public = key_load_public(identity_file, &comment); |
if (load_public_key(identity_file, public, &comment)) { |
if (public != NULL) { |
success = 1; |
fp = key_fingerprint(public, fptype, rep); |
} else { |
ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART); |
|
printf("%u %s %s (%s)\n", key_size(public), fp, comment, |
|
key_type(public)); |
|
if (log_level >= SYSLOG_LEVEL_VERBOSE) |
|
printf("%s\n", ra); |
key_free(public); |
key_free(public); |
public = key_new(KEY_UNSPEC); |
|
if (try_load_public_key(identity_file, public, &comment)) |
|
success = 1; |
|
else |
|
debug("try_load_public_key KEY_UNSPEC failed"); |
|
} |
|
if (success) { |
|
printf("%d %s %s\n", key_size(public), key_fingerprint(public), comment); |
|
key_free(public); |
|
xfree(comment); |
xfree(comment); |
|
xfree(ra); |
|
xfree(fp); |
exit(0); |
exit(0); |
} |
} |
|
if (comment) { |
|
xfree(comment); |
|
comment = NULL; |
|
} |
|
|
f = fopen(identity_file, "r"); |
if ((f = fopen(identity_file, "r")) == NULL) |
if (f != NULL) { |
fatal("%s: %s: %s", __progname, identity_file, strerror(errno)); |
while (fgets(line, sizeof(line), f)) { |
|
i = strlen(line) - 1; |
while (fgets(line, sizeof(line), f)) { |
if (line[i] != '\n') { |
if ((cp = strchr(line, '\n')) == NULL) { |
error("line %d too long: %.40s...", num, line); |
error("line %d too long: %.40s...", |
skip = 1; |
num + 1, line); |
|
skip = 1; |
|
continue; |
|
} |
|
num++; |
|
if (skip) { |
|
skip = 0; |
|
continue; |
|
} |
|
*cp = '\0'; |
|
|
|
/* Skip leading whitespace, empty and comment lines. */ |
|
for (cp = line; *cp == ' ' || *cp == '\t'; cp++) |
|
; |
|
if (!*cp || *cp == '\n' || *cp == '#') |
|
continue; |
|
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; |
continue; |
|
*cp++ = '\0'; |
|
} |
|
ep = cp; |
|
public = key_new(KEY_RSA1); |
|
if (key_read(public, &cp) != 1) { |
|
cp = ep; |
|
key_free(public); |
|
public = key_new(KEY_UNSPEC); |
|
if (key_read(public, &cp) != 1) { |
|
key_free(public); |
|
continue; |
} |
} |
num++; |
} |
if (skip) { |
comment = *cp ? cp : comment; |
skip = 0; |
fp = key_fingerprint(public, fptype, rep); |
|
ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART); |
|
printf("%u %s %s (%s)\n", key_size(public), fp, |
|
comment ? comment : "no comment", key_type(public)); |
|
if (log_level >= SYSLOG_LEVEL_VERBOSE) |
|
printf("%s\n", ra); |
|
xfree(ra); |
|
xfree(fp); |
|
key_free(public); |
|
invalid = 0; |
|
} |
|
fclose(f); |
|
|
|
if (invalid) { |
|
printf("%s is not a public key file.\n", identity_file); |
|
exit(1); |
|
} |
|
exit(0); |
|
} |
|
|
|
static void |
|
printhost(FILE *f, const char *name, Key *public, int ca, int hash) |
|
{ |
|
if (print_fingerprint) { |
|
enum fp_rep rep; |
|
enum fp_type fptype; |
|
char *fp, *ra; |
|
|
|
fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; |
|
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; |
|
fp = key_fingerprint(public, fptype, rep); |
|
ra = key_fingerprint(public, SSH_FP_MD5, SSH_FP_RANDOMART); |
|
printf("%u %s %s (%s)\n", key_size(public), fp, name, |
|
key_type(public)); |
|
if (log_level >= SYSLOG_LEVEL_VERBOSE) |
|
printf("%s\n", ra); |
|
xfree(ra); |
|
xfree(fp); |
|
} else { |
|
if (hash && (name = host_hash(name, NULL, 0)) == NULL) |
|
fatal("hash_host failed"); |
|
fprintf(f, "%s%s%s ", ca ? CA_MARKER : "", ca ? " " : "", name); |
|
if (!key_write(public, f)) |
|
fatal("key_write failed"); |
|
fprintf(f, "\n"); |
|
} |
|
} |
|
|
|
static void |
|
do_known_hosts(struct passwd *pw, const char *name) |
|
{ |
|
FILE *in, *out = stdout; |
|
Key *pub; |
|
char *cp, *cp2, *kp, *kp2; |
|
char line[16*1024], tmp[MAXPATHLEN], old[MAXPATHLEN]; |
|
int c, skip = 0, inplace = 0, num = 0, invalid = 0, has_unhashed = 0; |
|
int ca; |
|
|
|
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"); |
|
xfree(cp); |
|
have_identity = 1; |
|
} |
|
if ((in = fopen(identity_file, "r")) == NULL) |
|
fatal("%s: %s: %s", __progname, identity_file, strerror(errno)); |
|
|
|
/* |
|
* 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 ((c = mkstemp(tmp)) == -1) |
|
fatal("mkstemp: %s", strerror(errno)); |
|
if ((out = fdopen(c, "w")) == NULL) { |
|
c = errno; |
|
unlink(tmp); |
|
fatal("fdopen: %s", strerror(c)); |
|
} |
|
inplace = 1; |
|
} |
|
|
|
while (fgets(line, sizeof(line), in)) { |
|
if ((cp = strchr(line, '\n')) == NULL) { |
|
error("line %d too long: %.40s...", num + 1, line); |
|
skip = 1; |
|
invalid = 1; |
|
continue; |
|
} |
|
num++; |
|
if (skip) { |
|
skip = 0; |
|
continue; |
|
} |
|
*cp = '\0'; |
|
|
|
/* Skip leading whitespace, empty and comment lines. */ |
|
for (cp = line; *cp == ' ' || *cp == '\t'; cp++) |
|
; |
|
if (!*cp || *cp == '\n' || *cp == '#') { |
|
if (inplace) |
|
fprintf(out, "%s\n", cp); |
|
continue; |
|
} |
|
/* Check whether this is a CA key */ |
|
if (strncasecmp(cp, CA_MARKER, sizeof(CA_MARKER) - 1) == 0 && |
|
(cp[sizeof(CA_MARKER) - 1] == ' ' || |
|
cp[sizeof(CA_MARKER) - 1] == '\t')) { |
|
ca = 1; |
|
cp += sizeof(CA_MARKER); |
|
} else |
|
ca = 0; |
|
|
|
/* Find the end of the host name portion. */ |
|
for (kp = cp; *kp && *kp != ' ' && *kp != '\t'; kp++) |
|
; |
|
|
|
if (*kp == '\0' || *(kp + 1) == '\0') { |
|
error("line %d missing key: %.40s...", |
|
num, line); |
|
invalid = 1; |
|
continue; |
|
} |
|
*kp++ = '\0'; |
|
kp2 = kp; |
|
|
|
pub = key_new(KEY_RSA1); |
|
if (key_read(pub, &kp) != 1) { |
|
kp = kp2; |
|
key_free(pub); |
|
pub = key_new(KEY_UNSPEC); |
|
if (key_read(pub, &kp) != 1) { |
|
error("line %d invalid key: %.40s...", |
|
num, line); |
|
key_free(pub); |
|
invalid = 1; |
continue; |
continue; |
} |
} |
line[i] = '\0'; |
} |
|
|
/* Skip leading whitespace, empty and comment lines. */ |
if (*cp == HASH_DELIM) { |
for (cp = line; *cp == ' ' || *cp == '\t'; cp++) |
if (find_host || delete_host) { |
; |
cp2 = host_hash(name, cp, strlen(cp)); |
if (!*cp || *cp == '\n' || *cp == '#') |
if (cp2 == NULL) { |
continue ; |
error("line %d: invalid hashed " |
i = strtol(cp, &ep, 10); |
"name: %.64s...", num, line); |
if (i == 0 || ep == NULL || (*ep != ' ' && *ep != '\t')) { |
invalid = 1; |
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; |
continue; |
*cp++ = '\0'; |
|
} |
|
ep = cp; |
|
public = key_new(KEY_RSA1); |
|
if (key_read(public, &cp) != 1) { |
|
cp = ep; |
|
key_free(public); |
|
public = key_new(KEY_UNSPEC); |
|
if (key_read(public, &cp) != 1) { |
|
key_free(public); |
|
continue; |
|
} |
} |
|
c = (strcmp(cp2, cp) == 0); |
|
if (find_host && c) { |
|
printf("# Host %s found: " |
|
"line %d type %s%s\n", name, |
|
num, key_type(pub), |
|
ca ? " (CA key)" : ""); |
|
printhost(out, cp, pub, ca, 0); |
|
} |
|
if (delete_host && !c && !ca) |
|
printhost(out, cp, pub, ca, 0); |
|
} else if (hash_hosts) |
|
printhost(out, cp, pub, ca, 0); |
|
} else { |
|
if (find_host || delete_host) { |
|
c = (match_hostname(name, cp, |
|
strlen(cp)) == 1); |
|
if (find_host && c) { |
|
printf("# Host %s found: " |
|
"line %d type %s%s\n", name, |
|
num, key_type(pub), |
|
ca ? " (CA key)" : ""); |
|
printhost(out, name, pub, |
|
ca, hash_hosts && !ca); |
|
} |
|
if (delete_host && !c && !ca) |
|
printhost(out, cp, pub, ca, 0); |
|
} else if (hash_hosts) { |
|
for (cp2 = strsep(&cp, ","); |
|
cp2 != NULL && *cp2 != '\0'; |
|
cp2 = strsep(&cp, ",")) { |
|
if (ca) { |
|
fprintf(stderr, "Warning: " |
|
"ignoring CA key for host: " |
|
"%.64s\n", cp2); |
|
printhost(out, cp2, pub, ca, 0); |
|
} else if (strcspn(cp2, "*?!") != |
|
strlen(cp2)) { |
|
fprintf(stderr, "Warning: " |
|
"ignoring host name with " |
|
"metacharacters: %.64s\n", |
|
cp2); |
|
printhost(out, cp2, pub, ca, 0); |
|
} else |
|
printhost(out, cp2, pub, ca, 1); |
|
} |
|
has_unhashed = 1; |
} |
} |
comment = *cp ? cp : comment; |
|
printf("%d %s %s\n", key_size(public), |
|
key_fingerprint(public), |
|
comment ? comment : "no comment"); |
|
invalid = 0; |
|
} |
} |
fclose(f); |
key_free(pub); |
} |
} |
key_free(public); |
fclose(in); |
|
|
if (invalid) { |
if (invalid) { |
printf("%s is not a valid key file.\n", identity_file); |
fprintf(stderr, "%s is not a valid known_hosts file.\n", |
|
identity_file); |
|
if (inplace) { |
|
fprintf(stderr, "Not replacing existing known_hosts " |
|
"file because of errors\n"); |
|
fclose(out); |
|
unlink(tmp); |
|
} |
exit(1); |
exit(1); |
} |
} |
|
|
|
if (inplace) { |
|
fclose(out); |
|
|
|
/* 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); |
|
} |
|
|
|
fprintf(stderr, "%s updated.\n", identity_file); |
|
fprintf(stderr, "Original contents retained as %s\n", old); |
|
if (has_unhashed) { |
|
fprintf(stderr, "WARNING: %s contains unhashed " |
|
"entries\n", old); |
|
fprintf(stderr, "Delete this file to ensure privacy " |
|
"of hostnames\n"); |
|
} |
|
} |
|
|
exit(0); |
exit(0); |
} |
} |
|
|
|
|
* Perform changing a passphrase. The argument is the passwd structure |
* Perform changing a passphrase. The argument is the passwd structure |
* for the current user. |
* for the current user. |
*/ |
*/ |
void |
static void |
do_change_passphrase(struct passwd *pw) |
do_change_passphrase(struct passwd *pw) |
{ |
{ |
char *comment; |
char *comment; |
char *old_passphrase, *passphrase1, *passphrase2; |
char *old_passphrase, *passphrase1, *passphrase2; |
struct stat st; |
struct stat st; |
Key *private; |
Key *private; |
Key *public; |
|
int type = KEY_RSA1; |
|
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
public = key_new(type); |
|
if (!load_public_key(identity_file, public, NULL)) { |
|
type = KEY_UNSPEC; |
|
} else { |
|
/* Clear the public key since we are just about to load the whole file. */ |
|
key_free(public); |
|
} |
|
/* Try to load the file with empty passphrase. */ |
/* Try to load the file with empty passphrase. */ |
private = key_new(type); |
private = key_load_private(identity_file, "", &comment); |
if (!load_private_key(identity_file, "", private, &comment)) { |
if (private == NULL) { |
if (identity_passphrase) |
if (identity_passphrase) |
old_passphrase = xstrdup(identity_passphrase); |
old_passphrase = xstrdup(identity_passphrase); |
else |
else |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
old_passphrase = |
if (!load_private_key(identity_file, old_passphrase, private, &comment)) { |
read_passphrase("Enter old passphrase: ", |
memset(old_passphrase, 0, strlen(old_passphrase)); |
RP_ALLOW_STDIN); |
xfree(old_passphrase); |
private = key_load_private(identity_file, old_passphrase, |
|
&comment); |
|
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
if (private == NULL) { |
printf("Bad passphrase.\n"); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
memset(old_passphrase, 0, strlen(old_passphrase)); |
|
xfree(old_passphrase); |
|
} |
} |
printf("Key has comment '%s'\n", comment); |
printf("Key has comment '%s'\n", comment); |
|
|
|
|
passphrase2 = NULL; |
passphrase2 = NULL; |
} else { |
} else { |
passphrase1 = |
passphrase1 = |
read_passphrase("Enter new passphrase (empty for no passphrase): ", 1); |
read_passphrase("Enter new passphrase (empty for no " |
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
"passphrase): ", RP_ALLOW_STDIN); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", |
|
RP_ALLOW_STDIN); |
|
|
/* Verify that they are the same. */ |
/* Verify that they are the same. */ |
if (strcmp(passphrase1, passphrase2) != 0) { |
if (strcmp(passphrase1, passphrase2) != 0) { |
|
|
} |
} |
|
|
/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(identity_file, passphrase1, private, comment)) { |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s.\n", identity_file); |
identity_file, strerror(errno)); |
|
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
xfree(passphrase1); |
xfree(passphrase1); |
key_free(private); |
key_free(private); |
|
|
} |
} |
|
|
/* |
/* |
|
* Print the SSHFP RR. |
|
*/ |
|
static int |
|
do_print_resource_record(struct passwd *pw, char *fname, char *hname) |
|
{ |
|
Key *public; |
|
char *comment = NULL; |
|
struct stat st; |
|
|
|
if (fname == NULL) |
|
ask_filename(pw, "Enter file in which the key is"); |
|
if (stat(fname, &st) < 0) { |
|
if (errno == ENOENT) |
|
return 0; |
|
perror(fname); |
|
exit(1); |
|
} |
|
public = key_load_public(fname, &comment); |
|
if (public != NULL) { |
|
export_dns_rr(hname, public, stdout, print_generic); |
|
key_free(public); |
|
xfree(comment); |
|
return 1; |
|
} |
|
if (comment) |
|
xfree(comment); |
|
|
|
printf("failed to read v2 public key from %s.\n", fname); |
|
exit(1); |
|
} |
|
|
|
/* |
* Change the comment of a private key file. |
* Change the comment of a private key file. |
*/ |
*/ |
void |
static void |
do_change_comment(struct passwd *pw) |
do_change_comment(struct passwd *pw) |
{ |
{ |
char new_comment[1024], *comment; |
char new_comment[1024], *comment, *passphrase; |
Key *private; |
Key *private; |
Key *public; |
Key *public; |
char *passphrase; |
|
struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
|
int fd; |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which the key is"); |
ask_filename(pw, "Enter file in which the key is"); |
|
|
perror(identity_file); |
perror(identity_file); |
exit(1); |
exit(1); |
} |
} |
/* |
private = key_load_private(identity_file, "", &comment); |
* Try to load the public key from the file the verify that it is |
if (private == NULL) { |
* readable and of the proper format. |
|
*/ |
|
public = key_new(KEY_RSA1); |
|
if (!load_public_key(identity_file, public, NULL)) { |
|
printf("%s is not a valid key file.\n", identity_file); |
|
exit(1); |
|
} |
|
|
|
private = key_new(KEY_RSA1); |
|
if (load_private_key(identity_file, "", private, &comment)) |
|
passphrase = xstrdup(""); |
|
else { |
|
if (identity_passphrase) |
if (identity_passphrase) |
passphrase = xstrdup(identity_passphrase); |
passphrase = xstrdup(identity_passphrase); |
else if (identity_new_passphrase) |
else if (identity_new_passphrase) |
passphrase = xstrdup(identity_new_passphrase); |
passphrase = xstrdup(identity_new_passphrase); |
else |
else |
passphrase = read_passphrase("Enter passphrase: ", 1); |
passphrase = read_passphrase("Enter passphrase: ", |
|
RP_ALLOW_STDIN); |
/* Try to load using the passphrase. */ |
/* Try to load using the passphrase. */ |
if (!load_private_key(identity_file, passphrase, private, &comment)) { |
private = key_load_private(identity_file, passphrase, &comment); |
|
if (private == NULL) { |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
printf("Bad passphrase.\n"); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
|
} else { |
|
passphrase = xstrdup(""); |
} |
} |
|
if (private->type != KEY_RSA1) { |
|
fprintf(stderr, "Comments are only supported for RSA1 keys.\n"); |
|
key_free(private); |
|
exit(1); |
|
} |
printf("Key now has comment '%s'\n", comment); |
printf("Key now has comment '%s'\n", comment); |
|
|
if (identity_comment) { |
if (identity_comment) { |
|
|
key_free(private); |
key_free(private); |
exit(1); |
exit(1); |
} |
} |
if (strchr(new_comment, '\n')) |
new_comment[strcspn(new_comment, "\n")] = '\0'; |
*strchr(new_comment, '\n') = 0; |
|
} |
} |
|
|
/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(identity_file, passphrase, private, new_comment)) { |
if (!key_save_private(private, identity_file, passphrase, new_comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s.\n", identity_file); |
identity_file, strerror(errno)); |
|
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
key_free(private); |
key_free(private); |
|
|
} |
} |
memset(passphrase, 0, strlen(passphrase)); |
memset(passphrase, 0, strlen(passphrase)); |
xfree(passphrase); |
xfree(passphrase); |
|
public = key_from_private(private); |
key_free(private); |
key_free(private); |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
f = fopen(identity_file, "w"); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
if (!f) { |
if (fd == -1) { |
printf("Could not save your public key in %s\n", identity_file); |
printf("Could not save your public key in %s\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed\n", identity_file); |
|
exit(1); |
|
} |
if (!key_write(public, f)) |
if (!key_write(public, f)) |
fprintf(stderr, "write key failed"); |
fprintf(stderr, "write key failed\n"); |
key_free(public); |
key_free(public); |
fprintf(f, " %s\n", new_comment); |
fprintf(f, " %s\n", new_comment); |
fclose(f); |
fclose(f); |
|
|
exit(0); |
exit(0); |
} |
} |
|
|
void |
static const char * |
|
fmt_validity(u_int64_t valid_from, u_int64_t valid_to) |
|
{ |
|
char from[32], to[32]; |
|
static char ret[64]; |
|
time_t tt; |
|
struct tm *tm; |
|
|
|
*from = *to = '\0'; |
|
if (valid_from == 0 && valid_to == 0xffffffffffffffffULL) |
|
return "forever"; |
|
|
|
if (valid_from != 0) { |
|
/* XXX revisit INT_MAX in 2038 :) */ |
|
tt = valid_from > INT_MAX ? INT_MAX : valid_from; |
|
tm = localtime(&tt); |
|
strftime(from, sizeof(from), "%Y-%m-%dT%H:%M:%S", tm); |
|
} |
|
if (valid_to != 0xffffffffffffffffULL) { |
|
/* XXX revisit INT_MAX in 2038 :) */ |
|
tt = valid_to > INT_MAX ? INT_MAX : valid_to; |
|
tm = localtime(&tt); |
|
strftime(to, sizeof(to), "%Y-%m-%dT%H:%M:%S", tm); |
|
} |
|
|
|
if (valid_from == 0) { |
|
snprintf(ret, sizeof(ret), "before %s", to); |
|
return ret; |
|
} |
|
if (valid_to == 0xffffffffffffffffULL) { |
|
snprintf(ret, sizeof(ret), "after %s", from); |
|
return ret; |
|
} |
|
|
|
snprintf(ret, sizeof(ret), "from %s to %s", from, to); |
|
return ret; |
|
} |
|
|
|
static void |
|
add_flag_option(Buffer *c, const char *name) |
|
{ |
|
debug3("%s: %s", __func__, name); |
|
buffer_put_cstring(c, name); |
|
buffer_put_string(c, NULL, 0); |
|
} |
|
|
|
static void |
|
add_string_option(Buffer *c, const char *name, const char *value) |
|
{ |
|
Buffer b; |
|
|
|
debug3("%s: %s=%s", __func__, name, value); |
|
buffer_init(&b); |
|
buffer_put_cstring(&b, value); |
|
|
|
buffer_put_cstring(c, name); |
|
buffer_put_string(c, buffer_ptr(&b), buffer_len(&b)); |
|
|
|
buffer_free(&b); |
|
} |
|
|
|
#define OPTIONS_CRITICAL 1 |
|
#define OPTIONS_EXTENSIONS 2 |
|
static void |
|
prepare_options_buf(Buffer *c, int which) |
|
{ |
|
buffer_clear(c); |
|
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_command != NULL) |
|
add_string_option(c, "force-command", certflags_command); |
|
if ((which & OPTIONS_CRITICAL) != 0 && |
|
certflags_src_addr != NULL) |
|
add_string_option(c, "source-address", certflags_src_addr); |
|
} |
|
|
|
static void |
|
do_ca_sign(struct passwd *pw, int argc, char **argv) |
|
{ |
|
int i, fd; |
|
u_int n; |
|
Key *ca, *public; |
|
char *otmp, *tmp, *cp, *out, *comment, **plist = NULL; |
|
FILE *f; |
|
int v00 = 0; /* legacy keys */ |
|
|
|
tmp = tilde_expand_filename(ca_key_path, pw->pw_uid); |
|
if ((ca = load_identity(tmp)) == NULL) |
|
fatal("Couldn't load CA key \"%s\"", tmp); |
|
xfree(tmp); |
|
|
|
if (key_type_name != NULL) { |
|
switch (key_type_from_name(key_type_name)) { |
|
case KEY_RSA_CERT_V00: |
|
case KEY_DSA_CERT_V00: |
|
v00 = 1; |
|
break; |
|
case KEY_UNSPEC: |
|
if (strcasecmp(key_type_name, "v00") == 0) { |
|
v00 = 1; |
|
break; |
|
} else if (strcasecmp(key_type_name, "v01") == 0) |
|
break; |
|
/* FALLTHROUGH */ |
|
default: |
|
fprintf(stderr, "unknown key type %s\n", key_type_name); |
|
exit(1); |
|
} |
|
} |
|
|
|
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 = xrealloc(plist, n + 1, sizeof(*plist)); |
|
if (*(plist[n] = xstrdup(cp)) == '\0') |
|
fatal("Empty principal name"); |
|
} |
|
xfree(otmp); |
|
} |
|
|
|
tmp = tilde_expand_filename(argv[i], pw->pw_uid); |
|
if ((public = key_load_public(tmp, &comment)) == NULL) |
|
fatal("%s: unable to open \"%s\"", __func__, tmp); |
|
if (public->type != KEY_RSA && public->type != KEY_DSA) |
|
fatal("%s: key \"%s\" type %s cannot be certified", |
|
__func__, tmp, key_type(public)); |
|
|
|
/* Prepare certificate to sign */ |
|
if (key_to_certified(public, v00) != 0) |
|
fatal("Could not upgrade key %s to certificate", tmp); |
|
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; |
|
if (v00) { |
|
prepare_options_buf(&public->cert->critical, |
|
OPTIONS_CRITICAL|OPTIONS_EXTENSIONS); |
|
} else { |
|
prepare_options_buf(&public->cert->critical, |
|
OPTIONS_CRITICAL); |
|
prepare_options_buf(&public->cert->extensions, |
|
OPTIONS_EXTENSIONS); |
|
} |
|
public->cert->signature_key = key_from_private(ca); |
|
|
|
if (key_certify(public, ca) != 0) |
|
fatal("Couldn't not certify key %s", tmp); |
|
|
|
if ((cp = strrchr(tmp, '.')) != NULL && strcmp(cp, ".pub") == 0) |
|
*cp = '\0'; |
|
xasprintf(&out, "%s-cert.pub", tmp); |
|
xfree(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 (!key_write(public, f)) |
|
fatal("Could not write certified key to %s", out); |
|
fprintf(f, " %s\n", comment); |
|
fclose(f); |
|
|
|
if (!quiet) { |
|
logit("Signed %s key %s: id \"%s\" serial %llu%s%s " |
|
"valid %s", key_cert_type(public), |
|
out, public->cert->key_id, public->cert->serial, |
|
cert_principals != NULL ? " for " : "", |
|
cert_principals != NULL ? cert_principals : "", |
|
fmt_validity(cert_valid_from, cert_valid_to)); |
|
} |
|
|
|
key_free(public); |
|
xfree(out); |
|
} |
|
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); |
|
} |
|
|
|
bzero(&tm, 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, cert_valid_from); |
|
else |
|
cert_valid_to = parse_absolute_time(to); |
|
|
|
if (cert_valid_to <= cert_valid_from) |
|
fatal("Empty certificate validity interval"); |
|
xfree(from); |
|
} |
|
|
|
static void |
|
add_cert_option(char *opt) |
|
{ |
|
char *val; |
|
|
|
if (strcmp(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(const Buffer *optbuf, int v00, int in_critical) |
|
{ |
|
u_char *name, *data; |
|
u_int dlen; |
|
Buffer options, option; |
|
|
|
buffer_init(&options); |
|
buffer_append(&options, buffer_ptr(optbuf), buffer_len(optbuf)); |
|
|
|
buffer_init(&option); |
|
while (buffer_len(&options) != 0) { |
|
name = buffer_get_string(&options, NULL); |
|
data = buffer_get_string_ptr(&options, &dlen); |
|
buffer_append(&option, data, dlen); |
|
printf(" %s", name); |
|
if ((v00 || !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 ((v00 || in_critical) && |
|
(strcmp(name, "force-command") == 0 || |
|
strcmp(name, "source-address") == 0)) { |
|
data = buffer_get_string(&option, NULL); |
|
printf(" %s\n", data); |
|
xfree(data); |
|
} else { |
|
printf(" UNKNOWN OPTION (len %u)\n", |
|
buffer_len(&option)); |
|
buffer_clear(&option); |
|
} |
|
xfree(name); |
|
if (buffer_len(&option) != 0) |
|
fatal("Option corrupt: extra data at end"); |
|
} |
|
buffer_free(&option); |
|
buffer_free(&options); |
|
} |
|
|
|
static void |
|
do_show_cert(struct passwd *pw) |
|
{ |
|
Key *key; |
|
struct stat st; |
|
char *key_fp, *ca_fp; |
|
u_int i, v00; |
|
|
|
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)); |
|
if ((key = key_load_public(identity_file, NULL)) == NULL) |
|
fatal("%s is not a public key", identity_file); |
|
if (!key_is_cert(key)) |
|
fatal("%s is not a certificate", identity_file); |
|
v00 = key->type == KEY_RSA_CERT_V00 || key->type == KEY_DSA_CERT_V00; |
|
|
|
key_fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX); |
|
ca_fp = key_fingerprint(key->cert->signature_key, |
|
SSH_FP_MD5, SSH_FP_HEX); |
|
|
|
printf("%s:\n", identity_file); |
|
printf(" Type: %s %s certificate\n", key_ssh_name(key), |
|
key_cert_type(key)); |
|
printf(" Public key: %s %s\n", key_type(key), key_fp); |
|
printf(" Signing CA: %s %s\n", |
|
key_type(key->cert->signature_key), ca_fp); |
|
printf(" Key ID: \"%s\"\n", key->cert->key_id); |
|
if (!v00) |
|
printf(" Serial: %llu\n", key->cert->serial); |
|
printf(" Valid: %s\n", |
|
fmt_validity(key->cert->valid_after, key->cert->valid_before)); |
|
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 (buffer_len(&key->cert->critical) == 0) |
|
printf("(none)\n"); |
|
else { |
|
printf("\n"); |
|
show_options(&key->cert->critical, v00, 1); |
|
} |
|
if (!v00) { |
|
printf(" Extensions: "); |
|
if (buffer_len(&key->cert->extensions) == 0) |
|
printf("(none)\n"); |
|
else { |
|
printf("\n"); |
|
show_options(&key->cert->extensions, v00, 0); |
|
} |
|
} |
|
exit(0); |
|
} |
|
|
|
static void |
usage(void) |
usage(void) |
{ |
{ |
printf("Usage: %s [-lpqxXyc] [-t type] [-b bits] [-f file] [-C comment] [-N new-pass] [-P pass]\n", __progname); |
fprintf(stderr, "usage: %s [options]\n", __progname); |
|
fprintf(stderr, "Options:\n"); |
|
fprintf(stderr, " -a trials Number of trials for screening DH-GEX moduli.\n"); |
|
fprintf(stderr, " -B Show bubblebabble digest of key file.\n"); |
|
fprintf(stderr, " -b bits Number of bits in the key to create.\n"); |
|
fprintf(stderr, " -C comment Provide new comment.\n"); |
|
fprintf(stderr, " -c Change comment in private and public key files.\n"); |
|
#ifdef ENABLE_PKCS11 |
|
fprintf(stderr, " -D pkcs11 Download public key from pkcs11 token.\n"); |
|
#endif |
|
fprintf(stderr, " -e Export OpenSSH to foreign format key file.\n"); |
|
fprintf(stderr, " -F hostname Find hostname in known hosts file.\n"); |
|
fprintf(stderr, " -f filename Filename of the key file.\n"); |
|
fprintf(stderr, " -G file Generate candidates for DH-GEX moduli.\n"); |
|
fprintf(stderr, " -g Use generic DNS resource record format.\n"); |
|
fprintf(stderr, " -H Hash names in known_hosts file.\n"); |
|
fprintf(stderr, " -h Generate host certificate instead of a user certificate.\n"); |
|
fprintf(stderr, " -I key_id Key identifier to include in certificate.\n"); |
|
fprintf(stderr, " -i Import foreign format to OpenSSH key file.\n"); |
|
fprintf(stderr, " -L Print the contents of a certificate.\n"); |
|
fprintf(stderr, " -l Show fingerprint of key file.\n"); |
|
fprintf(stderr, " -M memory Amount of memory (MB) to use for generating DH-GEX moduli.\n"); |
|
fprintf(stderr, " -m key_fmt Conversion format for -e/-i (PEM|PKCS8|RFC4716).\n"); |
|
fprintf(stderr, " -N phrase Provide new passphrase.\n"); |
|
fprintf(stderr, " -n name,... User/host principal names to include in certificate\n"); |
|
fprintf(stderr, " -O option Specify a certificate option.\n"); |
|
fprintf(stderr, " -P phrase Provide old passphrase.\n"); |
|
fprintf(stderr, " -p Change passphrase of private key file.\n"); |
|
fprintf(stderr, " -q Quiet.\n"); |
|
fprintf(stderr, " -R hostname Remove host from known_hosts file.\n"); |
|
fprintf(stderr, " -r hostname Print DNS resource record.\n"); |
|
fprintf(stderr, " -S start Start point (hex) for generating DH-GEX moduli.\n"); |
|
fprintf(stderr, " -s ca_key Certify keys with CA key.\n"); |
|
fprintf(stderr, " -T file Screen candidates for DH-GEX moduli.\n"); |
|
fprintf(stderr, " -t type Specify type of key to create.\n"); |
|
fprintf(stderr, " -V from:to Specify certificate validity interval.\n"); |
|
fprintf(stderr, " -v Verbose.\n"); |
|
fprintf(stderr, " -W gen Generator to use for generating DH-GEX moduli.\n"); |
|
fprintf(stderr, " -y Read private key file and print public key.\n"); |
|
fprintf(stderr, " -z serial Specify a serial number.\n"); |
|
|
exit(1); |
exit(1); |
} |
} |
|
|
|
|
* Main program for key management. |
* Main program for key management. |
*/ |
*/ |
int |
int |
main(int ac, char **av) |
main(int argc, char **argv) |
{ |
{ |
char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2; |
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
|
char out_file[MAXPATHLEN], *pkcs11provider = NULL; |
|
char *rr_hostname = NULL; |
|
Key *private, *public; |
struct passwd *pw; |
struct passwd *pw; |
int opt, type; |
|
struct stat st; |
struct stat st; |
|
int opt, type, fd; |
|
u_int maxbits; |
|
u_int32_t memory = 0, generator_wanted = 0, trials = 100; |
|
int do_gen_candidates = 0, do_screen_candidates = 0; |
|
BIGNUM *start = NULL; |
FILE *f; |
FILE *f; |
Key *private; |
const char *errstr; |
Key *public; |
|
|
|
extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
|
|
|
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
|
sanitise_stdfd(); |
|
|
SSLeay_add_all_algorithms(); |
SSLeay_add_all_algorithms(); |
|
log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1); |
|
|
/* we need this for the home * directory. */ |
/* we need this for the home * directory. */ |
pw = getpwuid(getuid()); |
pw = getpwuid(getuid()); |
|
|
exit(1); |
exit(1); |
} |
} |
|
|
while ((opt = getopt(ac, av, "dqpclRxXyb:f:t:P:N:C:")) != EOF) { |
while ((opt = getopt(argc, argv, "degiqpclBHLhvxXyF:b:f:t:D:I:P:m:N:n:" |
|
"O:C:r:g:R:T:G:M:S:s:a:V:W:z:")) != -1) { |
switch (opt) { |
switch (opt) { |
case 'b': |
case 'b': |
bits = atoi(optarg); |
bits = (u_int32_t)strtonum(optarg, 768, 32768, &errstr); |
if (bits < 512 || bits > 32768) { |
if (errstr) |
printf("Bits has bad value.\n"); |
fatal("Bits has bad value %s (%s)", |
exit(1); |
optarg, errstr); |
} |
|
break; |
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': |
case 'l': |
print_fingerprint = 1; |
print_fingerprint = 1; |
break; |
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 'p': |
case 'p': |
change_passphrase = 1; |
change_passphrase = 1; |
break; |
break; |
|
|
case 'c': |
case 'c': |
change_comment = 1; |
change_comment = 1; |
break; |
break; |
|
|
case 'f': |
case 'f': |
strlcpy(identity_file, optarg, sizeof(identity_file)); |
if (strlcpy(identity_file, optarg, sizeof(identity_file)) >= |
|
sizeof(identity_file)) |
|
fatal("Identity filename too long"); |
have_identity = 1; |
have_identity = 1; |
break; |
break; |
|
case 'g': |
|
print_generic = 1; |
|
break; |
case 'P': |
case 'P': |
identity_passphrase = optarg; |
identity_passphrase = optarg; |
break; |
break; |
|
|
case 'N': |
case 'N': |
identity_new_passphrase = optarg; |
identity_new_passphrase = optarg; |
break; |
break; |
|
case 'O': |
|
add_cert_option(optarg); |
|
break; |
case 'C': |
case 'C': |
identity_comment = optarg; |
identity_comment = optarg; |
break; |
break; |
|
|
case 'q': |
case 'q': |
quiet = 1; |
quiet = 1; |
break; |
break; |
|
case 'e': |
case 'R': |
|
/* unused */ |
|
exit(0); |
|
break; |
|
|
|
case 'x': |
case 'x': |
convert_to_ssh2 = 1; |
/* export key */ |
|
convert_to = 1; |
break; |
break; |
|
case 'h': |
|
cert_key_type = SSH2_CERT_TYPE_HOST; |
|
certflags_flags = 0; |
|
break; |
|
case 'i': |
case 'X': |
case 'X': |
convert_from_ssh2 = 1; |
/* import key */ |
|
convert_from = 1; |
break; |
break; |
|
|
case 'y': |
case 'y': |
print_public = 1; |
print_public = 1; |
break; |
break; |
|
|
case 'd': |
case 'd': |
key_type_name = "dsa"; |
key_type_name = "dsa"; |
break; |
break; |
|
case 's': |
|
ca_key_path = optarg; |
|
break; |
case 't': |
case 't': |
key_type_name = optarg; |
key_type_name = optarg; |
break; |
break; |
|
case 'D': |
|
pkcs11provider = optarg; |
|
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 'W': |
|
generator_wanted = (u_int32_t)strtonum(optarg, 1, |
|
UINT_MAX, &errstr); |
|
if (errstr) |
|
fatal("Desired generator has bad value: %s (%s)", |
|
optarg, errstr); |
|
break; |
|
case 'a': |
|
trials = (u_int32_t)strtonum(optarg, 1, UINT_MAX, &errstr); |
|
if (errstr) |
|
fatal("Invalid number of trials: %s (%s)", |
|
optarg, errstr); |
|
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 'G': |
|
do_gen_candidates = 1; |
|
if (strlcpy(out_file, optarg, sizeof(out_file)) >= |
|
sizeof(out_file)) |
|
fatal("Output filename too long"); |
|
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 'S': |
|
/* XXX - also compare length against bits */ |
|
if (BN_hex2bn(&start, optarg) == 0) |
|
fatal("Invalid start point."); |
|
break; |
|
case 'V': |
|
parse_cert_times(optarg); |
|
break; |
|
case 'z': |
|
cert_serial = strtonum(optarg, 0, LLONG_MAX, &errstr); |
|
if (errstr) |
|
fatal("Invalid serial number: %s", errstr); |
|
break; |
case '?': |
case '?': |
default: |
default: |
usage(); |
usage(); |
} |
} |
} |
} |
if (optind < ac) { |
|
|
/* reinit */ |
|
log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1); |
|
|
|
argv += optind; |
|
argc -= optind; |
|
|
|
if (ca_key_path != NULL) { |
|
if (argc < 1) { |
|
printf("Too few arguments.\n"); |
|
usage(); |
|
} |
|
} else if (argc > 0) { |
printf("Too many arguments.\n"); |
printf("Too many arguments.\n"); |
usage(); |
usage(); |
} |
} |
|
|
printf("Can only have one of -p and -c.\n"); |
printf("Can only have one of -p and -c.\n"); |
usage(); |
usage(); |
} |
} |
if (print_fingerprint) |
if (print_fingerprint && (delete_host || hash_hosts)) { |
|
printf("Cannot use -l with -D or -R.\n"); |
|
usage(); |
|
} |
|
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 (print_fingerprint || print_bubblebabble) |
do_fingerprint(pw); |
do_fingerprint(pw); |
if (change_passphrase) |
if (change_passphrase) |
do_change_passphrase(pw); |
do_change_passphrase(pw); |
if (change_comment) |
if (change_comment) |
do_change_comment(pw); |
do_change_comment(pw); |
if (convert_to_ssh2) |
if (convert_to) |
do_convert_to_ssh2(pw); |
do_convert_to(pw); |
if (convert_from_ssh2) |
if (convert_from) |
do_convert_from_ssh2(pw); |
do_convert_from(pw); |
if (print_public) |
if (print_public) |
do_print_public(pw); |
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) { |
|
perror(identity_file); |
|
exit(1); |
|
} |
|
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); |
|
|
|
if (n == 0) |
|
fatal("no keys found."); |
|
exit(0); |
|
} |
|
} |
|
if (pkcs11provider != NULL) |
|
do_download(pw, pkcs11provider); |
|
|
|
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, "w"); |
|
|
|
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, trials, generator_wanted) != 0) |
|
fatal("modulus screening failed"); |
|
return (0); |
|
} |
|
|
arc4random_stir(); |
arc4random_stir(); |
|
|
|
if (key_type_name == NULL) |
|
key_type_name = "rsa"; |
|
|
type = key_type_from_name(key_type_name); |
type = key_type_from_name(key_type_name); |
if (type == KEY_UNSPEC) { |
if (type == KEY_UNSPEC) { |
fprintf(stderr, "unknown key type %s\n", key_type_name); |
fprintf(stderr, "unknown key type %s\n", key_type_name); |
exit(1); |
exit(1); |
} |
} |
|
if (bits == 0) |
|
bits = (type == KEY_DSA) ? DEFAULT_BITS_DSA : DEFAULT_BITS; |
|
maxbits = (type == KEY_DSA) ? |
|
OPENSSL_DSA_MAX_MODULUS_BITS : OPENSSL_RSA_MAX_MODULUS_BITS; |
|
if (bits > maxbits) { |
|
fprintf(stderr, "key bits exceeds maximum %d\n", maxbits); |
|
exit(1); |
|
} |
|
if (type == KEY_DSA && bits != 1024) |
|
fatal("DSA keys must be 1024 bits"); |
if (!quiet) |
if (!quiet) |
printf("Generating public/private %s key pair.\n", key_type_name); |
printf("Generating public/private %s key pair.\n", key_type_name); |
private = key_generate(type, bits); |
private = key_generate(type, bits); |
if (private == NULL) { |
if (private == NULL) { |
fprintf(stderr, "key_generate failed"); |
fprintf(stderr, "key_generate failed\n"); |
exit(1); |
exit(1); |
} |
} |
public = key_from_private(private); |
public = key_from_private(private); |
|
|
if (!have_identity) |
if (!have_identity) |
ask_filename(pw, "Enter file in which to save the key"); |
ask_filename(pw, "Enter file in which to save the key"); |
|
|
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
/* Create ~/.ssh directory if it doesn't already exist. */ |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", |
if (strstr(identity_file, dotsshdir) != NULL && |
pw->pw_dir, _PATH_SSH_USER_DIR); |
stat(dotsshdir, &st) < 0) { |
if (strstr(identity_file, dotsshdir) != NULL) { |
if (mkdir(dotsshdir, 0700) < 0) |
if (stat(dotsshdir, &st) < 0) { |
error("Could not create directory '%s'.", dotsshdir); |
if (errno != ENOENT) { |
else if (!quiet) |
error("Could not stat %s: %s", dotsshdir, |
printf("Created directory '%s'.\n", 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 the file already exists, ask the user to confirm. */ |
if (stat(identity_file, &st) >= 0) { |
if (stat(identity_file, &st) >= 0) { |
|
|
else { |
else { |
passphrase_again: |
passphrase_again: |
passphrase1 = |
passphrase1 = |
read_passphrase("Enter passphrase (empty for no passphrase): ", 1); |
read_passphrase("Enter passphrase (empty for no " |
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
"passphrase): ", RP_ALLOW_STDIN); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", |
|
RP_ALLOW_STDIN); |
if (strcmp(passphrase1, passphrase2) != 0) { |
if (strcmp(passphrase1, passphrase2) != 0) { |
/* The passphrases do not match. Clear them and retry. */ |
/* |
|
* The passphrases do not match. Clear them and |
|
* retry. |
|
*/ |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase2, 0, strlen(passphrase2)); |
memset(passphrase2, 0, strlen(passphrase2)); |
xfree(passphrase1); |
xfree(passphrase1); |
|
|
if (identity_comment) { |
if (identity_comment) { |
strlcpy(comment, identity_comment, sizeof(comment)); |
strlcpy(comment, identity_comment, sizeof(comment)); |
} else { |
} else { |
/* Create default commend field for the passphrase. */ |
/* Create default comment field for the passphrase. */ |
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); |
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); |
} |
} |
|
|
/* Save the key with the given passphrase and comment. */ |
/* Save the key with the given passphrase and comment. */ |
if (!save_private_key(identity_file, passphrase1, private, comment)) { |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s.\n", identity_file); |
identity_file, strerror(errno)); |
|
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
xfree(passphrase1); |
xfree(passphrase1); |
exit(1); |
exit(1); |
|
|
printf("Your identification has been saved in %s.\n", identity_file); |
printf("Your identification has been saved in %s.\n", identity_file); |
|
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
f = fopen(identity_file, "w"); |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
if (!f) { |
if (fd == -1) { |
printf("Could not save your public key in %s\n", identity_file); |
printf("Could not save your public key in %s\n", identity_file); |
exit(1); |
exit(1); |
} |
} |
|
f = fdopen(fd, "w"); |
|
if (f == NULL) { |
|
printf("fdopen %s failed\n", identity_file); |
|
exit(1); |
|
} |
if (!key_write(public, f)) |
if (!key_write(public, f)) |
fprintf(stderr, "write key failed"); |
fprintf(stderr, "write key failed\n"); |
fprintf(f, " %s\n", comment); |
fprintf(f, " %s\n", comment); |
fclose(f); |
fclose(f); |
|
|
if (!quiet) { |
if (!quiet) { |
|
char *fp = key_fingerprint(public, SSH_FP_MD5, SSH_FP_HEX); |
|
char *ra = key_fingerprint(public, SSH_FP_MD5, |
|
SSH_FP_RANDOMART); |
printf("Your public key has been saved in %s.\n", |
printf("Your public key has been saved in %s.\n", |
identity_file); |
identity_file); |
printf("The key fingerprint is:\n"); |
printf("The key fingerprint is:\n"); |
printf("%s %s\n", key_fingerprint(public), comment); |
printf("%s %s\n", fp, comment); |
|
printf("The key's randomart image is:\n"); |
|
printf("%s\n", ra); |
|
xfree(ra); |
|
xfree(fp); |
} |
} |
|
|
key_free(public); |
key_free(public); |