| version 1.5, 1999/09/29 21:14:16 |
version 1.206, 2011/03/23 15:16:22 |
|
|
| |
/* $OpenBSD$ */ |
| /* |
/* |
| |
* Author: Tatu Ylonen <ylo@cs.hut.fi> |
| |
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| |
* All rights reserved |
| |
* Identity and host key generation and maintenance. |
| |
* |
| |
* As far as I am concerned, the code I have written for this software |
| |
* can be used freely for any purpose. Any derived versions of this |
| |
* software must be clearly marked as such, and if the derived work is |
| |
* incompatible with the protocol description in the RFC file, it must be |
| |
* called by a name other than "ssh" or "Secure Shell". |
| |
*/ |
| |
|
| ssh-keygen.c |
#include <sys/types.h> |
| |
#include <sys/socket.h> |
| |
#include <sys/stat.h> |
| |
#include <sys/param.h> |
| |
|
| Author: Tatu Ylonen <ylo@cs.hut.fi> |
#include <openssl/evp.h> |
| |
#include <openssl/pem.h> |
| |
|
| Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
#include <errno.h> |
| All rights reserved |
#include <fcntl.h> |
| |
#include <pwd.h> |
| |
#include <stdio.h> |
| |
#include <stdlib.h> |
| |
#include <string.h> |
| |
#include <unistd.h> |
| |
|
| Created: Mon Mar 27 02:26:40 1995 ylo |
|
| |
|
| Identity and host key generation and maintenance. |
|
| |
|
| */ |
|
| |
|
| #include "includes.h" |
|
| RCSID("$Id$"); |
|
| |
|
| #include "rsa.h" |
|
| #include "ssh.h" |
|
| #include "xmalloc.h" |
#include "xmalloc.h" |
| |
#include "key.h" |
| |
#include "rsa.h" |
| |
#include "authfile.h" |
| |
#include "uuencode.h" |
| |
#include "buffer.h" |
| |
#include "pathnames.h" |
| |
#include "log.h" |
| |
#include "misc.h" |
| |
#include "match.h" |
| |
#include "hostfile.h" |
| |
#include "dns.h" |
| |
#include "ssh2.h" |
| |
|
| /* Generated private key. */ |
#ifdef ENABLE_PKCS11 |
| RSA *private_key; |
#include "ssh-pkcs11.h" |
| |
#endif |
| |
|
| /* Generated public key. */ |
/* Number of bits in the RSA/DSA key. This value can be set on the command line. */ |
| RSA *public_key; |
#define DEFAULT_BITS 2048 |
| |
#define DEFAULT_BITS_DSA 1024 |
| |
#define DEFAULT_BITS_ECDSA 256 |
| |
u_int32_t bits = 0; |
| |
|
| /* Number of bits in the RSA key. This value can be changed on the command |
/* |
| line. */ |
* Flag indicating that we just want to change the passphrase. This can be |
| int bits = 1024; |
* set on the command line. |
| |
*/ |
| /* Flag indicating that we just want to change the passphrase. This can be |
|
| set on the command line. */ |
|
| int change_passphrase = 0; |
int change_passphrase = 0; |
| |
|
| /* Flag indicating that we just want to change the comment. This can be set |
/* |
| on the command line. */ |
* Flag indicating that we just want to change the comment. This can be set |
| |
* on the command line. |
| |
*/ |
| int change_comment = 0; |
int change_comment = 0; |
| |
|
| int quiet = 0; |
int quiet = 0; |
| |
|
| /* This is set to the identity file name if given on the command line. */ |
int log_level = SYSLOG_LEVEL_INFO; |
| char *identity_file = NULL; |
|
| |
|
| |
/* Flag indicating that we want to hash a known_hosts file */ |
| |
int hash_hosts = 0; |
| |
/* Flag indicating that we want lookup a host in known_hosts file */ |
| |
int find_host = 0; |
| |
/* Flag indicating that we want to delete a host from a known_hosts file */ |
| |
int delete_host = 0; |
| |
|
| |
/* Flag indicating that we want to show the contents of a certificate */ |
| |
int show_cert = 0; |
| |
|
| |
/* Flag indicating that we just want to see the key fingerprint */ |
| |
int print_fingerprint = 0; |
| |
int print_bubblebabble = 0; |
| |
|
| |
/* The identity file name, given on the command line or entered by the user. */ |
| |
char identity_file[1024]; |
| |
int have_identity = 0; |
| |
|
| /* This is set to the passphrase if given on the command line. */ |
/* This is set to the passphrase if given on the command line. */ |
| char *identity_passphrase = NULL; |
char *identity_passphrase = NULL; |
| |
|
|
|
| /* 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; |
| |
|
| /* Perform changing a passphrase. The argument is the passwd structure |
/* Path to CA key when certifying keys. */ |
| for the current user. */ |
char *ca_key_path = NULL; |
| |
|
| void |
/* Certificate serial number */ |
| do_change_passphrase(struct passwd *pw) |
long long cert_serial = 0; |
| |
|
| |
/* Key type when certifying */ |
| |
u_int cert_key_type = SSH2_CERT_TYPE_USER; |
| |
|
| |
/* "key ID" of signed key */ |
| |
char *cert_key_id = NULL; |
| |
|
| |
/* Comma-separated list of principal names for certifying keys */ |
| |
char *cert_principals = NULL; |
| |
|
| |
/* Validity period for certificates */ |
| |
u_int64_t cert_valid_from = 0; |
| |
u_int64_t cert_valid_to = ~0ULL; |
| |
|
| |
/* Certificate options */ |
| |
#define CERTOPT_X_FWD (1) |
| |
#define CERTOPT_AGENT_FWD (1<<1) |
| |
#define CERTOPT_PORT_FWD (1<<2) |
| |
#define CERTOPT_PTY (1<<3) |
| |
#define CERTOPT_USER_RC (1<<4) |
| |
#define CERTOPT_DEFAULT (CERTOPT_X_FWD|CERTOPT_AGENT_FWD| \ |
| |
CERTOPT_PORT_FWD|CERTOPT_PTY|CERTOPT_USER_RC) |
| |
u_int32_t certflags_flags = CERTOPT_DEFAULT; |
| |
char *certflags_command = NULL; |
| |
char *certflags_src_addr = NULL; |
| |
|
| |
/* Conversion to/from various formats */ |
| |
int convert_to = 0; |
| |
int convert_from = 0; |
| |
enum { |
| |
FMT_RFC4716, |
| |
FMT_PKCS8, |
| |
FMT_PEM |
| |
} convert_format = FMT_RFC4716; |
| |
int print_public = 0; |
| |
int print_generic = 0; |
| |
|
| |
char *key_type_name = NULL; |
| |
|
| |
/* Load key from this PKCS#11 provider */ |
| |
char *pkcs11provider = NULL; |
| |
|
| |
/* argv0 */ |
| |
extern char *__progname; |
| |
|
| |
char hostname[MAXHOSTNAMELEN]; |
| |
|
| |
/* moduli.c */ |
| |
int gen_candidates(FILE *, u_int32_t, u_int32_t, BIGNUM *); |
| |
int prime_test(FILE *, FILE *, u_int32_t, u_int32_t); |
| |
|
| |
static void |
| |
type_bits_valid(int type, u_int32_t *bits) |
| { |
{ |
| char buf[1024], *comment; |
u_int maxbits; |
| char *old_passphrase, *passphrase1, *passphrase2; |
|
| struct stat st; |
|
| RSA *private_key; |
|
| |
|
| /* Read key file name. */ |
if (type == KEY_UNSPEC) { |
| if (identity_file != NULL) { |
fprintf(stderr, "unknown key type %s\n", key_type_name); |
| strncpy(buf, identity_file, sizeof(buf)); |
exit(1); |
| buf[sizeof(buf) - 1] = '\0'; |
} |
| } else { |
if (*bits == 0) { |
| printf("Enter file in which the key is ($HOME/%s): ", SSH_CLIENT_IDENTITY); |
if (type == KEY_DSA) |
| fflush(stdout); |
*bits = DEFAULT_BITS_DSA; |
| if (fgets(buf, sizeof(buf), stdin) == NULL) |
else if (type == KEY_ECDSA) |
| exit(1); |
*bits = DEFAULT_BITS_ECDSA; |
| if (strchr(buf, '\n')) |
else |
| *strchr(buf, '\n') = 0; |
*bits = DEFAULT_BITS; |
| if (strcmp(buf, "") == 0) |
} |
| snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); |
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"); |
| |
else if (type != KEY_ECDSA && *bits < 768) |
| |
fatal("Key must at least be 768 bits"); |
| |
else if (type == KEY_ECDSA && key_ecdsa_bits_to_nid(*bits) == -1) |
| |
fatal("Invalid ECDSA key length - valid lengths are " |
| |
"256, 384 or 521 bits"); |
| |
} |
| |
|
| /* Check if the file exists. */ |
static void |
| if (stat(buf, &st) < 0) |
ask_filename(struct passwd *pw, const char *prompt) |
| { |
{ |
| perror(buf); |
char buf[1024]; |
| exit(1); |
char *name = NULL; |
| } |
|
| |
|
| /* Try to load the public key from the file the verify that it is |
|
| readable and of the proper format. */ |
|
| public_key = RSA_new(); |
|
| if (!load_public_key(buf, public_key, NULL)) |
|
| { |
|
| printf("%s is not a valid key file.\n", buf); |
|
| exit(1); |
|
| } |
|
| /* Clear the public key since we are just about to load the whole file. */ |
|
| RSA_free(public_key); |
|
| |
|
| /* Try to load the file with empty passphrase. */ |
if (key_type_name == NULL) |
| private_key = RSA_new(); |
name = _PATH_SSH_CLIENT_ID_RSA; |
| if (!load_private_key(buf, "", private_key, &comment)) { |
else { |
| /* Read passphrase from the user. */ |
switch (key_type_from_name(key_type_name)) { |
| if (identity_passphrase) |
case KEY_RSA1: |
| old_passphrase = xstrdup(identity_passphrase); |
name = _PATH_SSH_CLIENT_IDENTITY; |
| else |
break; |
| old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
case KEY_DSA_CERT: |
| /* Try to load using the passphrase. */ |
case KEY_DSA_CERT_V00: |
| if (!load_private_key(buf, old_passphrase, private_key, &comment)) |
case KEY_DSA: |
| { |
name = _PATH_SSH_CLIENT_ID_DSA; |
| memset(old_passphrase, 0, strlen(old_passphrase)); |
break; |
| xfree(old_passphrase); |
case KEY_ECDSA_CERT: |
| printf("Bad passphrase.\n"); |
case KEY_ECDSA: |
| exit(1); |
name = _PATH_SSH_CLIENT_ID_ECDSA; |
| } |
break; |
| /* Destroy the passphrase. */ |
case KEY_RSA_CERT: |
| memset(old_passphrase, 0, strlen(old_passphrase)); |
case KEY_RSA_CERT_V00: |
| xfree(old_passphrase); |
case KEY_RSA: |
| } |
name = _PATH_SSH_CLIENT_ID_RSA; |
| printf("Key has comment '%s'\n", comment); |
break; |
| |
default: |
| /* Ask the new passphrase (twice). */ |
fprintf(stderr, "bad key type\n"); |
| if (identity_new_passphrase) |
exit(1); |
| { |
break; |
| passphrase1 = xstrdup(identity_new_passphrase); |
} |
| passphrase2 = NULL; |
} |
| } |
snprintf(identity_file, sizeof(identity_file), "%s/%s", pw->pw_dir, name); |
| else |
fprintf(stderr, "%s (%s): ", prompt, identity_file); |
| { |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
| passphrase1 = |
exit(1); |
| read_passphrase("Enter new passphrase (empty for no passphrase): ", 1); |
buf[strcspn(buf, "\n")] = '\0'; |
| passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
if (strcmp(buf, "") != 0) |
| |
strlcpy(identity_file, buf, sizeof(identity_file)); |
| |
have_identity = 1; |
| |
} |
| |
|
| /* Verify that they are the same. */ |
static Key * |
| if (strcmp(passphrase1, passphrase2) != 0) |
load_identity(char *filename) |
| { |
{ |
| memset(passphrase1, 0, strlen(passphrase1)); |
char *pass; |
| memset(passphrase2, 0, strlen(passphrase2)); |
Key *prv; |
| xfree(passphrase1); |
|
| xfree(passphrase2); |
prv = key_load_private(filename, "", NULL); |
| printf("Pass phrases do not match. Try again.\n"); |
if (prv == NULL) { |
| exit(1); |
if (identity_passphrase) |
| |
pass = xstrdup(identity_passphrase); |
| |
else |
| |
pass = read_passphrase("Enter passphrase: ", |
| |
RP_ALLOW_STDIN); |
| |
prv = key_load_private(filename, pass, NULL); |
| |
memset(pass, 0, strlen(pass)); |
| |
xfree(pass); |
| } |
} |
| /* Destroy the other copy. */ |
return prv; |
| memset(passphrase2, 0, strlen(passphrase2)); |
} |
| xfree(passphrase2); |
|
| } |
|
| |
|
| /* Save the file using the new passphrase. */ |
#define SSH_COM_PUBLIC_BEGIN "---- BEGIN SSH2 PUBLIC KEY ----" |
| if (!save_private_key(buf, passphrase1, private_key, comment)) |
#define SSH_COM_PUBLIC_END "---- END SSH2 PUBLIC KEY ----" |
| { |
#define SSH_COM_PRIVATE_BEGIN "---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----" |
| printf("Saving the key failed: %s: %s.\n", |
#define SSH_COM_PRIVATE_KEY_MAGIC 0x3f6ff9eb |
| buf, strerror(errno)); |
|
| memset(passphrase1, 0, strlen(passphrase1)); |
|
| xfree(passphrase1); |
|
| RSA_free(private_key); |
|
| xfree(comment); |
|
| exit(1); |
|
| } |
|
| /* Destroy the passphrase and the copy of the key in memory. */ |
|
| memset(passphrase1, 0, strlen(passphrase1)); |
|
| xfree(passphrase1); |
|
| RSA_free(private_key); /* Destroys contents */ |
|
| xfree(comment); |
|
| |
|
| printf("Your identification has been saved with the new passphrase.\n"); |
static void |
| exit(0); |
do_convert_to_ssh2(struct passwd *pw, Key *k) |
| |
{ |
| |
u_int len; |
| |
u_char *blob; |
| |
char comment[61]; |
| |
|
| |
if (key_to_blob(k, &blob, &len) <= 0) { |
| |
fprintf(stderr, "key_to_blob failed\n"); |
| |
exit(1); |
| |
} |
| |
/* Comment + surrounds must fit into 72 chars (RFC 4716 sec 3.3) */ |
| |
snprintf(comment, sizeof(comment), |
| |
"%u-bit %s, converted by %s@%s from OpenSSH", |
| |
key_size(k), key_type(k), |
| |
pw->pw_name, hostname); |
| |
|
| |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_BEGIN); |
| |
fprintf(stdout, "Comment: \"%s\"\n", comment); |
| |
dump_base64(stdout, blob, len); |
| |
fprintf(stdout, "%s\n", SSH_COM_PUBLIC_END); |
| |
key_free(k); |
| |
xfree(blob); |
| |
exit(0); |
| } |
} |
| |
|
| /* Change the comment of a private key file. */ |
static void |
| |
do_convert_to_pkcs8(Key *k) |
| |
{ |
| |
switch (key_type_plain(k->type)) { |
| |
case KEY_RSA: |
| |
if (!PEM_write_RSA_PUBKEY(stdout, k->rsa)) |
| |
fatal("PEM_write_RSA_PUBKEY failed"); |
| |
break; |
| |
case KEY_DSA: |
| |
if (!PEM_write_DSA_PUBKEY(stdout, k->dsa)) |
| |
fatal("PEM_write_DSA_PUBKEY failed"); |
| |
break; |
| |
case KEY_ECDSA: |
| |
if (!PEM_write_EC_PUBKEY(stdout, k->ecdsa)) |
| |
fatal("PEM_write_EC_PUBKEY failed"); |
| |
break; |
| |
default: |
| |
fatal("%s: unsupported key type %s", __func__, key_type(k)); |
| |
} |
| |
exit(0); |
| |
} |
| |
|
| void |
static void |
| do_change_comment(struct passwd *pw) |
do_convert_to_pem(Key *k) |
| { |
{ |
| char buf[1024], new_comment[1024], *comment; |
switch (key_type_plain(k->type)) { |
| RSA *private_key; |
case KEY_RSA: |
| char *passphrase; |
if (!PEM_write_RSAPublicKey(stdout, k->rsa)) |
| struct stat st; |
fatal("PEM_write_RSAPublicKey failed"); |
| FILE *f; |
break; |
| char *tmpbuf; |
#if notyet /* OpenSSH 0.9.8 lacks this function */ |
| |
case KEY_DSA: |
| |
if (!PEM_write_DSAPublicKey(stdout, k->dsa)) |
| |
fatal("PEM_write_DSAPublicKey failed"); |
| |
break; |
| |
#endif |
| |
/* XXX ECDSA? */ |
| |
default: |
| |
fatal("%s: unsupported key type %s", __func__, key_type(k)); |
| |
} |
| |
exit(0); |
| |
} |
| |
|
| /* Read key file name. */ |
static void |
| if (identity_file) |
do_convert_to(struct passwd *pw) |
| { |
{ |
| strncpy(buf, identity_file, sizeof(buf)); |
Key *k; |
| buf[sizeof(buf) - 1] = '\0'; |
struct stat st; |
| } |
|
| else |
if (!have_identity) |
| { |
ask_filename(pw, "Enter file in which the key is"); |
| printf("Enter file in which the key is ($HOME/%s): ", |
if (stat(identity_file, &st) < 0) |
| SSH_CLIENT_IDENTITY); |
fatal("%s: %s: %s", __progname, identity_file, strerror(errno)); |
| fflush(stdout); |
if ((k = key_load_public(identity_file, NULL)) == NULL) { |
| if (fgets(buf, sizeof(buf), stdin) == NULL) |
if ((k = load_identity(identity_file)) == NULL) { |
| |
fprintf(stderr, "load failed\n"); |
| |
exit(1); |
| |
} |
| |
} |
| |
if (k->type == KEY_RSA1) { |
| |
fprintf(stderr, "version 1 keys are not supported\n"); |
| |
exit(1); |
| |
} |
| |
|
| |
switch (convert_format) { |
| |
case FMT_RFC4716: |
| |
do_convert_to_ssh2(pw, k); |
| |
break; |
| |
case FMT_PKCS8: |
| |
do_convert_to_pkcs8(k); |
| |
break; |
| |
case FMT_PEM: |
| |
do_convert_to_pem(k); |
| |
break; |
| |
default: |
| |
fatal("%s: unknown key format %d", __func__, convert_format); |
| |
} |
| |
exit(0); |
| |
} |
| |
|
| |
static void |
| |
buffer_get_bignum_bits(Buffer *b, BIGNUM *value) |
| |
{ |
| |
u_int bignum_bits = buffer_get_int(b); |
| |
u_int bytes = (bignum_bits + 7) / 8; |
| |
|
| |
if (buffer_len(b) < bytes) |
| |
fatal("buffer_get_bignum_bits: input buffer too small: " |
| |
"need %d have %d", bytes, buffer_len(b)); |
| |
if (BN_bin2bn(buffer_ptr(b), bytes, value) == NULL) |
| |
fatal("buffer_get_bignum_bits: BN_bin2bn failed"); |
| |
buffer_consume(b, bytes); |
| |
} |
| |
|
| |
static Key * |
| |
do_convert_private_ssh2_from_blob(u_char *blob, u_int blen) |
| |
{ |
| |
Buffer b; |
| |
Key *key = NULL; |
| |
char *type, *cipher; |
| |
u_char *sig, data[] = "abcde12345"; |
| |
int magic, rlen, ktype, i1, i2, i3, i4; |
| |
u_int slen; |
| |
u_long e; |
| |
|
| |
buffer_init(&b); |
| |
buffer_append(&b, blob, blen); |
| |
|
| |
magic = buffer_get_int(&b); |
| |
if (magic != SSH_COM_PRIVATE_KEY_MAGIC) { |
| |
error("bad magic 0x%x != 0x%x", magic, SSH_COM_PRIVATE_KEY_MAGIC); |
| |
buffer_free(&b); |
| |
return NULL; |
| |
} |
| |
i1 = buffer_get_int(&b); |
| |
type = buffer_get_string(&b, NULL); |
| |
cipher = buffer_get_string(&b, NULL); |
| |
i2 = buffer_get_int(&b); |
| |
i3 = buffer_get_int(&b); |
| |
i4 = buffer_get_int(&b); |
| |
debug("ignore (%d %d %d %d)", i1, i2, i3, i4); |
| |
if (strcmp(cipher, "none") != 0) { |
| |
error("unsupported cipher %s", cipher); |
| |
xfree(cipher); |
| |
buffer_free(&b); |
| |
xfree(type); |
| |
return NULL; |
| |
} |
| |
xfree(cipher); |
| |
|
| |
if (strstr(type, "dsa")) { |
| |
ktype = KEY_DSA; |
| |
} else if (strstr(type, "rsa")) { |
| |
ktype = KEY_RSA; |
| |
} else { |
| |
buffer_free(&b); |
| |
xfree(type); |
| |
return NULL; |
| |
} |
| |
key = key_new_private(ktype); |
| |
xfree(type); |
| |
|
| |
switch (key->type) { |
| |
case KEY_DSA: |
| |
buffer_get_bignum_bits(&b, key->dsa->p); |
| |
buffer_get_bignum_bits(&b, key->dsa->g); |
| |
buffer_get_bignum_bits(&b, key->dsa->q); |
| |
buffer_get_bignum_bits(&b, key->dsa->pub_key); |
| |
buffer_get_bignum_bits(&b, key->dsa->priv_key); |
| |
break; |
| |
case KEY_RSA: |
| |
e = buffer_get_char(&b); |
| |
debug("e %lx", e); |
| |
if (e < 30) { |
| |
e <<= 8; |
| |
e += buffer_get_char(&b); |
| |
debug("e %lx", e); |
| |
e <<= 8; |
| |
e += buffer_get_char(&b); |
| |
debug("e %lx", e); |
| |
} |
| |
if (!BN_set_word(key->rsa->e, e)) { |
| |
buffer_free(&b); |
| |
key_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); |
| |
rsa_generate_additional_parameters(key->rsa); |
| |
break; |
| |
} |
| |
rlen = buffer_len(&b); |
| |
if (rlen != 0) |
| |
error("do_convert_private_ssh2_from_blob: " |
| |
"remaining bytes in key blob %d", rlen); |
| |
buffer_free(&b); |
| |
|
| |
/* try the key */ |
| |
key_sign(key, &sig, &slen, data, sizeof(data)); |
| |
key_verify(key, sig, slen, data, sizeof(data)); |
| |
xfree(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) { |
| |
fprintf(stderr, "input line too long.\n"); |
| |
exit(1); |
| |
} |
| |
switch (c) { |
| |
case '\r': |
| |
c = fgetc(fp); |
| |
if (c != EOF && c != '\n' && ungetc(c, fp) == EOF) { |
| |
fprintf(stderr, "unget: %s\n", strerror(errno)); |
| |
exit(1); |
| |
} |
| |
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, Key **k, int *private) |
| |
{ |
| |
int blen; |
| |
u_int len; |
| |
char line[1024]; |
| |
u_char blob[8096]; |
| |
char encoded[8096]; |
| |
int escaped = 0; |
| |
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 (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) { |
| |
fprintf(stderr, "uudecode failed.\n"); |
| |
exit(1); |
| |
} |
| |
*k = *private ? |
| |
do_convert_private_ssh2_from_blob(blob, blen) : |
| |
key_from_blob(blob, blen); |
| |
if (*k == NULL) { |
| |
fprintf(stderr, "decode blob failed.\n"); |
| |
exit(1); |
| |
} |
| |
fclose(fp); |
| |
} |
| |
|
| |
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; |
| |
case EVP_PKEY_EC: |
| |
*k = key_new(KEY_UNSPEC); |
| |
(*k)->type = KEY_ECDSA; |
| |
(*k)->ecdsa = EVP_PKEY_get1_EC_KEY(pubkey); |
| |
(*k)->ecdsa_nid = key_ecdsa_key_to_nid((*k)->ecdsa); |
| |
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; |
| |
} |
| |
/* XXX ECDSA */ |
| |
#endif |
| |
fatal("%s: unrecognised raw private key format", __func__); |
| |
} |
| |
|
| |
static void |
| |
do_convert_from(struct passwd *pw) |
| |
{ |
| |
Key *k = NULL; |
| |
int 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) |
| |
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_ECDSA: |
| |
ok = PEM_write_ECPrivateKey(stdout, k->ecdsa, 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) { |
| |
fprintf(stderr, "key write failed\n"); |
| |
exit(1); |
| |
} |
| |
key_free(k); |
| |
exit(0); |
| |
} |
| |
|
| |
static void |
| |
do_print_public(struct passwd *pw) |
| |
{ |
| |
Key *prv; |
| |
struct stat st; |
| |
|
| |
if (!have_identity) |
| |
ask_filename(pw, "Enter file in which the key is"); |
| |
if (stat(identity_file, &st) < 0) { |
| |
perror(identity_file); |
| |
exit(1); |
| |
} |
| |
prv = load_identity(identity_file); |
| |
if (prv == NULL) { |
| |
fprintf(stderr, "load failed\n"); |
| |
exit(1); |
| |
} |
| |
if (!key_write(prv, stdout)) |
| |
fprintf(stderr, "key_write failed"); |
| |
key_free(prv); |
| |
fprintf(stdout, "\n"); |
| |
exit(0); |
| |
} |
| |
|
| |
static void |
| |
do_download(struct passwd *pw) |
| |
{ |
| |
#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; |
| |
Key *public; |
| |
char *comment = NULL, *cp, *ep, line[16*1024], *fp, *ra; |
| |
int i, skip = 0, num = 0, invalid = 1; |
| |
enum fp_rep rep; |
| |
enum fp_type fptype; |
| |
struct stat st; |
| |
|
| |
fptype = print_bubblebabble ? SSH_FP_SHA1 : SSH_FP_MD5; |
| |
rep = print_bubblebabble ? SSH_FP_BUBBLEBABBLE : SSH_FP_HEX; |
| |
|
| |
if (!have_identity) |
| |
ask_filename(pw, "Enter file in which the key is"); |
| |
if (stat(identity_file, &st) < 0) { |
| |
perror(identity_file); |
| |
exit(1); |
| |
} |
| |
public = key_load_public(identity_file, &comment); |
| |
if (public != NULL) { |
| |
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, |
| |
key_type(public)); |
| |
if (log_level >= SYSLOG_LEVEL_VERBOSE) |
| |
printf("%s\n", ra); |
| |
key_free(public); |
| |
xfree(comment); |
| |
xfree(ra); |
| |
xfree(fp); |
| |
exit(0); |
| |
} |
| |
if (comment) { |
| |
xfree(comment); |
| |
comment = NULL; |
| |
} |
| |
|
| |
if ((f = fopen(identity_file, "r")) == NULL) |
| |
fatal("%s: %s: %s", __progname, identity_file, strerror(errno)); |
| |
|
| |
while (fgets(line, sizeof(line), f)) { |
| |
if ((cp = strchr(line, '\n')) == NULL) { |
| |
error("line %d too long: %.40s...", |
| |
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; |
| |
*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; |
| |
} |
| |
} |
| |
comment = *cp ? cp : comment; |
| |
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 |
| |
do_gen_all_hostkeys(struct passwd *pw) |
| |
{ |
| |
struct { |
| |
char *key_type; |
| |
char *key_type_display; |
| |
char *path; |
| |
} key_types[] = { |
| |
{ "rsa1", "RSA1", _PATH_HOST_KEY_FILE }, |
| |
{ "rsa", "RSA" ,_PATH_HOST_RSA_KEY_FILE }, |
| |
{ "dsa", "DSA", _PATH_HOST_DSA_KEY_FILE }, |
| |
{ "ecdsa", "ECDSA",_PATH_HOST_ECDSA_KEY_FILE }, |
| |
{ NULL, NULL, NULL } |
| |
}; |
| |
|
| |
int first = 0; |
| |
struct stat st; |
| |
Key *private, *public; |
| |
char comment[1024]; |
| |
int i, type, fd; |
| |
FILE *f; |
| |
|
| |
for (i = 0; key_types[i].key_type; i++) { |
| |
if (stat(key_types[i].path, &st) == 0) |
| |
continue; |
| |
if (errno != ENOENT) { |
| |
printf("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); |
| |
arc4random_stir(); |
| |
type = key_type_from_name(key_types[i].key_type); |
| |
strlcpy(identity_file, key_types[i].path, sizeof(identity_file)); |
| |
bits = 0; |
| |
type_bits_valid(type, &bits); |
| |
private = key_generate(type, bits); |
| |
if (private == NULL) { |
| |
fprintf(stderr, "key_generate failed\n"); |
| |
first = 0; |
| |
continue; |
| |
} |
| |
public = key_from_private(private); |
| |
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, |
| |
hostname); |
| |
if (!key_save_private(private, identity_file, "", comment)) { |
| |
printf("Saving the key failed: %s.\n", identity_file); |
| |
key_free(private); |
| |
key_free(public); |
| |
first = 0; |
| |
continue; |
| |
} |
| |
key_free(private); |
| |
arc4random_stir(); |
| |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
| |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
| |
if (fd == -1) { |
| |
printf("Could not save your public key in %s\n", |
| |
identity_file); |
| |
key_free(public); |
| |
first = 0; |
| |
continue; |
| |
} |
| |
f = fdopen(fd, "w"); |
| |
if (f == NULL) { |
| |
printf("fdopen %s failed\n", identity_file); |
| |
key_free(public); |
| |
first = 0; |
| |
continue; |
| |
} |
| |
if (!key_write(public, f)) { |
| |
fprintf(stderr, "write key failed\n"); |
| |
key_free(public); |
| |
first = 0; |
| |
continue; |
| |
} |
| |
fprintf(f, " %s\n", comment); |
| |
fclose(f); |
| |
key_free(public); |
| |
|
| |
} |
| |
if (first != 0) |
| |
printf("\n"); |
| |
} |
| |
|
| |
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; |
| |
} |
| |
} |
| |
|
| |
if (*cp == HASH_DELIM) { |
| |
if (find_host || delete_host) { |
| |
cp2 = host_hash(name, cp, strlen(cp)); |
| |
if (cp2 == NULL) { |
| |
error("line %d: invalid hashed " |
| |
"name: %.64s...", num, line); |
| |
invalid = 1; |
| |
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; |
| |
} |
| |
} |
| |
key_free(pub); |
| |
} |
| |
fclose(in); |
| |
|
| |
if (invalid) { |
| |
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); |
| |
} |
| |
|
| |
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); |
| |
} |
| |
|
| |
/* |
| |
* 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; |
| |
Key *private; |
| |
|
| |
if (!have_identity) |
| |
ask_filename(pw, "Enter file in which the key is"); |
| |
if (stat(identity_file, &st) < 0) { |
| |
perror(identity_file); |
| |
exit(1); |
| |
} |
| |
/* Try to load the file with empty passphrase. */ |
| |
private = key_load_private(identity_file, "", &comment); |
| |
if (private == NULL) { |
| |
if (identity_passphrase) |
| |
old_passphrase = xstrdup(identity_passphrase); |
| |
else |
| |
old_passphrase = |
| |
read_passphrase("Enter old passphrase: ", |
| |
RP_ALLOW_STDIN); |
| |
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"); |
| |
exit(1); |
| |
} |
| |
} |
| |
printf("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) { |
| |
memset(passphrase1, 0, strlen(passphrase1)); |
| |
memset(passphrase2, 0, strlen(passphrase2)); |
| |
xfree(passphrase1); |
| |
xfree(passphrase2); |
| |
printf("Pass phrases do not match. Try again.\n"); |
| |
exit(1); |
| |
} |
| |
/* Destroy the other copy. */ |
| |
memset(passphrase2, 0, strlen(passphrase2)); |
| |
xfree(passphrase2); |
| |
} |
| |
|
| |
/* Save the file using the new passphrase. */ |
| |
if (!key_save_private(private, identity_file, passphrase1, comment)) { |
| |
printf("Saving the key failed: %s.\n", identity_file); |
| |
memset(passphrase1, 0, strlen(passphrase1)); |
| |
xfree(passphrase1); |
| |
key_free(private); |
| |
xfree(comment); |
| |
exit(1); |
| |
} |
| |
/* Destroy the passphrase and the copy of the key in memory. */ |
| |
memset(passphrase1, 0, strlen(passphrase1)); |
| |
xfree(passphrase1); |
| |
key_free(private); /* Destroys contents */ |
| |
xfree(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) |
| |
{ |
| |
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); |
exit(1); |
| if (strchr(buf, '\n')) |
} |
| *strchr(buf, '\n') = 0; |
|
| if (strcmp(buf, "") == 0) |
|
| snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); |
|
| } |
|
| |
|
| /* Check if the file exists. */ |
/* |
| if (stat(buf, &st) < 0) |
* Change the comment of a private key file. |
| { |
*/ |
| perror(buf); |
static void |
| exit(1); |
do_change_comment(struct passwd *pw) |
| } |
{ |
| |
char new_comment[1024], *comment, *passphrase; |
| /* Try to load the public key from the file the verify that it is |
Key *private; |
| readable and of the proper format. */ |
Key *public; |
| public_key = RSA_new(); |
struct stat st; |
| if (!load_public_key(buf, public_key, NULL)) |
FILE *f; |
| { |
int fd; |
| printf("%s is not a valid key file.\n", buf); |
|
| exit(1); |
|
| } |
|
| |
|
| private_key = RSA_new(); |
if (!have_identity) |
| /* Try to load the file with empty passphrase. */ |
ask_filename(pw, "Enter file in which the key is"); |
| if (load_private_key(buf, "", private_key, &comment)) |
if (stat(identity_file, &st) < 0) { |
| passphrase = xstrdup(""); |
perror(identity_file); |
| else |
exit(1); |
| { |
|
| /* Read passphrase from the user. */ |
|
| if (identity_passphrase) |
|
| passphrase = xstrdup(identity_passphrase); |
|
| else |
|
| if (identity_new_passphrase) |
|
| passphrase = xstrdup(identity_new_passphrase); |
|
| else |
|
| passphrase = read_passphrase("Enter passphrase: ", 1); |
|
| /* Try to load using the passphrase. */ |
|
| if (!load_private_key(buf, passphrase, private_key, &comment)) |
|
| { |
|
| memset(passphrase, 0, strlen(passphrase)); |
|
| xfree(passphrase); |
|
| printf("Bad passphrase.\n"); |
|
| exit(1); |
|
| } |
} |
| } |
private = key_load_private(identity_file, "", &comment); |
| printf("Key now has comment '%s'\n", comment); |
if (private == NULL) { |
| |
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. */ |
| |
private = key_load_private(identity_file, passphrase, &comment); |
| |
if (private == NULL) { |
| |
memset(passphrase, 0, strlen(passphrase)); |
| |
xfree(passphrase); |
| |
printf("Bad passphrase.\n"); |
| |
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); |
| |
|
| if (identity_comment) |
if (identity_comment) { |
| { |
strlcpy(new_comment, identity_comment, sizeof(new_comment)); |
| strncpy(new_comment, identity_comment, sizeof(new_comment)); |
} else { |
| new_comment[sizeof(new_comment) - 1] = '\0'; |
printf("Enter new comment: "); |
| } |
fflush(stdout); |
| else |
if (!fgets(new_comment, sizeof(new_comment), stdin)) { |
| { |
memset(passphrase, 0, strlen(passphrase)); |
| printf("Enter new comment: "); |
key_free(private); |
| fflush(stdout); |
exit(1); |
| if (!fgets(new_comment, sizeof(new_comment), stdin)) |
} |
| { |
new_comment[strcspn(new_comment, "\n")] = '\0'; |
| memset(passphrase, 0, strlen(passphrase)); |
|
| RSA_free(private_key); |
|
| exit(1); |
|
| } |
} |
| |
|
| /* Remove terminating newline from comment. */ |
|
| if (strchr(new_comment, '\n')) |
|
| *strchr(new_comment, '\n') = 0; |
|
| } |
|
| |
|
| /* Save the file using the new passphrase. */ |
|
| if (!save_private_key(buf, passphrase, private_key, new_comment)) |
|
| { |
|
| printf("Saving the key failed: %s: %s.\n", |
|
| buf, strerror(errno)); |
|
| memset(passphrase, 0, strlen(passphrase)); |
|
| xfree(passphrase); |
|
| RSA_free(private_key); |
|
| xfree(comment); |
|
| exit(1); |
|
| } |
|
| |
|
| /* Destroy the passphrase and the private key in memory. */ |
/* Save the file using the new passphrase. */ |
| memset(passphrase, 0, strlen(passphrase)); |
if (!key_save_private(private, identity_file, passphrase, new_comment)) { |
| xfree(passphrase); |
printf("Saving the key failed: %s.\n", identity_file); |
| RSA_free(private_key); |
memset(passphrase, 0, strlen(passphrase)); |
| |
xfree(passphrase); |
| |
key_free(private); |
| |
xfree(comment); |
| |
exit(1); |
| |
} |
| |
memset(passphrase, 0, strlen(passphrase)); |
| |
xfree(passphrase); |
| |
public = key_from_private(private); |
| |
key_free(private); |
| |
|
| /* Save the public key in text format in a file with the same name but |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
| .pub appended. */ |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
| strcat(buf, ".pub"); |
if (fd == -1) { |
| f = fopen(buf, "w"); |
printf("Could not save your public key in %s\n", identity_file); |
| if (!f) |
exit(1); |
| { |
} |
| printf("Could not save your public key in %s\n", buf); |
f = fdopen(fd, "w"); |
| exit(1); |
if (f == NULL) { |
| } |
printf("fdopen %s failed\n", identity_file); |
| fprintf(f, "%d ", BN_num_bits(public_key->n)); |
exit(1); |
| tmpbuf = BN_bn2dec(public_key->e); |
} |
| fprintf(f, "%s ", tmpbuf); |
if (!key_write(public, f)) |
| free (tmpbuf); |
fprintf(stderr, "write key failed\n"); |
| tmpbuf = BN_bn2dec(public_key->n); |
key_free(public); |
| fprintf(f, "%s %s\n", tmpbuf, new_comment); |
fprintf(f, " %s\n", new_comment); |
| free (tmpbuf); |
fclose(f); |
| fclose(f); |
|
| |
|
| xfree(comment); |
xfree(comment); |
| |
|
| printf("The comment in your key file has been changed.\n"); |
printf("The comment in your key file has been changed.\n"); |
| exit(0); |
exit(0); |
| } |
} |
| |
|
| /* Main program for key management. */ |
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; |
| |
|
| int |
*from = *to = '\0'; |
| main(int ac, char **av) |
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) |
| { |
{ |
| char buf[16384], buf2[1024], *passphrase1, *passphrase2; |
debug3("%s: %s", __func__, name); |
| struct passwd *pw; |
buffer_put_cstring(c, name); |
| char *tmpbuf; |
buffer_put_string(c, NULL, 0); |
| int opt; |
} |
| struct stat st; |
|
| FILE *f; |
|
| char hostname[MAXHOSTNAMELEN]; |
|
| extern int optind; |
|
| extern char *optarg; |
|
| |
|
| /* check if RSA support exists */ |
static void |
| if (rsa_alive() == 0) { |
add_string_option(Buffer *c, const char *name, const char *value) |
| extern char *__progname; |
{ |
| |
Buffer b; |
| |
|
| fprintf(stderr, |
debug3("%s: %s=%s", __func__, name, value); |
| "%s: no RSA support in libssl and libcrypto. See ssl(8).\n", |
buffer_init(&b); |
| __progname); |
buffer_put_cstring(&b, value); |
| exit(1); |
|
| } |
|
| |
|
| /* Get user\'s passwd structure. We need this for the home directory. */ |
buffer_put_cstring(c, name); |
| pw = getpwuid(getuid()); |
buffer_put_string(c, buffer_ptr(&b), buffer_len(&b)); |
| if (!pw) |
|
| { |
|
| printf("You don't exist, go away!\n"); |
|
| exit(1); |
|
| } |
|
| |
|
| /* Create ~/.ssh directory if it doesn\'t already exist. */ |
buffer_free(&b); |
| snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
} |
| if (stat(buf, &st) < 0) |
|
| if (mkdir(buf, 0755) < 0) |
|
| error("Could not create directory '%s'.", buf); |
|
| |
|
| /* Parse command line arguments. */ |
#define OPTIONS_CRITICAL 1 |
| while ((opt = getopt(ac, av, "qpcb:f:P:N:C:")) != EOF) |
#define OPTIONS_EXTENSIONS 2 |
| { |
static void |
| switch (opt) |
prepare_options_buf(Buffer *c, int which) |
| { |
{ |
| case 'b': |
buffer_clear(c); |
| bits = atoi(optarg); |
if ((which & OPTIONS_CRITICAL) != 0 && |
| if (bits < 512 || bits > 32768) |
certflags_command != NULL) |
| { |
add_string_option(c, "force-command", certflags_command); |
| printf("Bits has bad value.\n"); |
if ((which & OPTIONS_EXTENSIONS) != 0 && |
| exit(1); |
(certflags_flags & CERTOPT_AGENT_FWD) != 0) |
| } |
add_flag_option(c, "permit-agent-forwarding"); |
| break; |
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_EXTENSIONS) != 0 && |
| |
(certflags_flags & CERTOPT_X_FWD) != 0) |
| |
add_flag_option(c, "permit-X11-forwarding"); |
| |
if ((which & OPTIONS_CRITICAL) != 0 && |
| |
certflags_src_addr != NULL) |
| |
add_string_option(c, "source-address", certflags_src_addr); |
| |
} |
| |
|
| case 'p': |
static Key * |
| change_passphrase = 1; |
load_pkcs11_key(char *path) |
| break; |
{ |
| |
#ifdef ENABLE_PKCS11 |
| |
Key **keys = NULL, *public, *private = NULL; |
| |
int i, nkeys; |
| |
|
| case 'c': |
if ((public = key_load_public(path, NULL)) == NULL) |
| change_comment = 1; |
fatal("Couldn't load CA public key \"%s\"", path); |
| break; |
|
| |
|
| case 'f': |
nkeys = pkcs11_add_provider(pkcs11provider, identity_passphrase, &keys); |
| identity_file = optarg; |
debug3("%s: %d keys", __func__, nkeys); |
| break; |
if (nkeys <= 0) |
| |
fatal("cannot read public key from pkcs11"); |
| case 'P': |
for (i = 0; i < nkeys; i++) { |
| identity_passphrase = optarg; |
if (key_equal_public(public, keys[i])) { |
| break; |
private = keys[i]; |
| |
continue; |
| |
} |
| |
key_free(keys[i]); |
| |
} |
| |
xfree(keys); |
| |
key_free(public); |
| |
return private; |
| |
#else |
| |
fatal("no pkcs11 support"); |
| |
#endif /* ENABLE_PKCS11 */ |
| |
} |
| |
|
| case 'N': |
static void |
| identity_new_passphrase = optarg; |
do_ca_sign(struct passwd *pw, int argc, char **argv) |
| break; |
{ |
| |
int i, fd; |
| |
u_int n; |
| |
Key *ca, *public; |
| |
char *otmp, *tmp, *cp, *out, *comment, **plist = NULL; |
| |
FILE *f; |
| |
int v00 = 0; /* legacy keys */ |
| |
|
| case 'C': |
if (key_type_name != NULL) { |
| identity_comment = optarg; |
switch (key_type_from_name(key_type_name)) { |
| break; |
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); |
| |
} |
| |
} |
| |
|
| case 'q': |
pkcs11_init(1); |
| quiet = 1; |
tmp = tilde_expand_filename(ca_key_path, pw->pw_uid); |
| break; |
if (pkcs11provider != NULL) { |
| |
if ((ca = load_pkcs11_key(tmp)) == NULL) |
| |
fatal("No PKCS#11 key matching %s found", ca_key_path); |
| |
} else if ((ca = load_identity(tmp)) == NULL) |
| |
fatal("Couldn't load CA key \"%s\"", tmp); |
| |
xfree(tmp); |
| |
|
| case '?': |
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 && |
| |
public->type != KEY_ECDSA) |
| |
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, |
| |
(unsigned long long)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); |
| |
} |
| |
pkcs11_terminate(); |
| |
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: |
default: |
| printf("ssh-keygen version %s\n", SSH_VERSION); |
fatal("Invalid certificate time format %s", s); |
| printf("Usage: %s [-b bits] [-p] [-c] [-f file] [-P pass] [-N new-pass] [-C comment]\n", av[0]); |
|
| exit(1); |
|
| } |
} |
| } |
|
| if (optind < ac) |
|
| { |
|
| printf("Too many arguments.\n"); |
|
| exit(1); |
|
| } |
|
| if (change_passphrase && change_comment) |
|
| { |
|
| printf("Can only have one of -p and -c.\n"); |
|
| exit(1); |
|
| } |
|
| |
|
| /* If the user requested to change the passphrase, do it now. This |
bzero(&tm, sizeof(tm)); |
| function never returns. */ |
if (strptime(buf, fmt, &tm) == NULL) |
| if (change_passphrase) |
fatal("Invalid certificate time %s", s); |
| do_change_passphrase(pw); |
if ((tt = mktime(&tm)) < 0) |
| |
fatal("Certificate time %s cannot be represented", s); |
| |
return (u_int64_t)tt; |
| |
} |
| |
|
| /* If the user requested to change the comment, do it now. This function |
static void |
| never returns. */ |
parse_cert_times(char *timespec) |
| if (change_comment) |
{ |
| do_change_comment(pw); |
char *from, *to; |
| |
time_t now = time(NULL); |
| |
int64_t secs; |
| |
|
| /* Initialize random number generator. This may take a while if the |
/* +timespec relative to now */ |
| user has no seed file, so display a message to the user. */ |
if (*timespec == '+' && strchr(timespec, ':') == NULL) { |
| if (!quiet) |
if ((secs = convtime(timespec + 1)) == -1) |
| printf("Initializing random number generator...\n"); |
fatal("Invalid relative certificate life %s", timespec); |
| arc4random_stir(); |
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; |
| |
} |
| |
|
| if (quiet) |
/* |
| rsa_set_verbose(0); |
* 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'; |
| |
|
| /* Generate the rsa key pair. */ |
if (*from == '-' || *from == '+') |
| private_key = RSA_new(); |
cert_valid_from = parse_relative_time(from, now); |
| public_key = RSA_new(); |
else |
| rsa_generate_key(private_key, public_key, bits); |
cert_valid_from = parse_absolute_time(from); |
| |
|
| ask_file_again: |
if (*to == '-' || *to == '+') |
| |
cert_valid_to = parse_relative_time(to, cert_valid_from); |
| |
else |
| |
cert_valid_to = parse_absolute_time(to); |
| |
|
| /* Ask for a file to save the key in. */ |
if (cert_valid_to <= cert_valid_from) |
| if (identity_file) |
fatal("Empty certificate validity interval"); |
| { |
xfree(from); |
| strncpy(buf, identity_file, sizeof(buf)); |
} |
| buf[sizeof(buf) - 1] = '\0'; |
|
| } |
|
| else |
|
| { |
|
| printf("Enter file in which to save the key ($HOME/%s): ", |
|
| SSH_CLIENT_IDENTITY); |
|
| fflush(stdout); |
|
| if (fgets(buf, sizeof(buf), stdin) == NULL) |
|
| exit(1); |
|
| if (strchr(buf, '\n')) |
|
| *strchr(buf, '\n') = 0; |
|
| if (strcmp(buf, "") == 0) |
|
| snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); |
|
| } |
|
| |
|
| /* If the file aready exists, ask the user to confirm. */ |
static void |
| if (stat(buf, &st) >= 0) |
add_cert_option(char *opt) |
| { |
{ |
| printf("%s already exists.\n", buf); |
char *val; |
| printf("Overwrite (y/n)? "); |
|
| fflush(stdout); |
if (strcmp(opt, "clear") == 0) |
| if (fgets(buf2, sizeof(buf2), stdin) == NULL) |
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", |
| |
(unsigned long long)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) |
| |
{ |
| |
fprintf(stderr, "usage: %s [options]\n", __progname); |
| |
fprintf(stderr, "Options:\n"); |
| |
fprintf(stderr, " -A Generate non-existent host keys for all key types.\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); |
| if (buf2[0] != 'y' && buf2[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): ", 1); |
|
| passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
|
| if (strcmp(passphrase1, passphrase2) != 0) |
|
| { |
|
| /* The passphrases do not match. Clear them and retry. */ |
|
| memset(passphrase1, 0, strlen(passphrase1)); |
|
| memset(passphrase2, 0, strlen(passphrase2)); |
|
| xfree(passphrase1); |
|
| xfree(passphrase2); |
|
| printf("Passphrases do not match. Try again.\n"); |
|
| goto passphrase_again; |
|
| } |
|
| /* Clear the other copy of the passphrase. */ |
|
| memset(passphrase2, 0, strlen(passphrase2)); |
|
| xfree(passphrase2); |
|
| } |
|
| |
|
| /* Create default commend field for the passphrase. The user can later |
/* |
| edit this field. */ |
* Main program for key management. |
| if (identity_comment) |
*/ |
| { |
int |
| strlcpy(buf2, identity_comment, sizeof(buf2)); |
main(int argc, char **argv) |
| } |
{ |
| else |
char dotsshdir[MAXPATHLEN], comment[1024], *passphrase1, *passphrase2; |
| { |
char out_file[MAXPATHLEN], *rr_hostname = NULL; |
| if (gethostname(hostname, sizeof(hostname)) < 0) |
Key *private, *public; |
| { |
struct passwd *pw; |
| perror("gethostname"); |
struct stat st; |
| exit(1); |
int opt, type, fd; |
| |
u_int32_t memory = 0, generator_wanted = 0, trials = 100; |
| |
int do_gen_candidates = 0, do_screen_candidates = 0; |
| |
int gen_all_hostkeys = 0; |
| |
BIGNUM *start = NULL; |
| |
FILE *f; |
| |
const char *errstr; |
| |
|
| |
extern int optind; |
| |
extern char *optarg; |
| |
|
| |
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */ |
| |
sanitise_stdfd(); |
| |
|
| |
OpenSSL_add_all_algorithms(); |
| |
log_init(argv[0], SYSLOG_LEVEL_INFO, SYSLOG_FACILITY_USER, 1); |
| |
|
| |
/* we need this for the home * directory. */ |
| |
pw = getpwuid(getuid()); |
| |
if (!pw) { |
| |
printf("You don't exist, go away!\n"); |
| |
exit(1); |
| } |
} |
| snprintf(buf2, sizeof buf2, "%s@%s", pw->pw_name, hostname); |
if (gethostname(hostname, sizeof(hostname)) < 0) { |
| } |
perror("gethostname"); |
| |
exit(1); |
| |
} |
| |
|
| /* Save the key with the given passphrase and comment. */ |
while ((opt = getopt(argc, argv, "AdegiqpclBHLhvxXyF:b:f:t:D:I:P:m:N:n:" |
| if (!save_private_key(buf, passphrase1, private_key, buf2)) |
"O:C:r:g:R:T:G:M:S:s:a:V:W:z:")) != -1) { |
| { |
switch (opt) { |
| printf("Saving the key failed: %s: %s.\n", |
case 'A': |
| buf, strerror(errno)); |
gen_all_hostkeys = 1; |
| memset(passphrase1, 0, strlen(passphrase1)); |
break; |
| xfree(passphrase1); |
case 'b': |
| goto ask_file_again; |
bits = (u_int32_t)strtonum(optarg, 256, 32768, &errstr); |
| } |
if (errstr) |
| /* Clear the passphrase. */ |
fatal("Bits has bad value %s (%s)", |
| memset(passphrase1, 0, strlen(passphrase1)); |
optarg, errstr); |
| xfree(passphrase1); |
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 '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 'O': |
| |
add_cert_option(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 'i': |
| |
case 'X': |
| |
/* import key */ |
| |
convert_from = 1; |
| |
break; |
| |
case 'y': |
| |
print_public = 1; |
| |
break; |
| |
case 'd': |
| |
key_type_name = "dsa"; |
| |
break; |
| |
case 's': |
| |
ca_key_path = optarg; |
| |
break; |
| |
case 't': |
| |
key_type_name = optarg; |
| |
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 '?': |
| |
default: |
| |
usage(); |
| |
} |
| |
} |
| |
|
| /* Clear the private key and the random number generator. */ |
/* reinit */ |
| RSA_free(private_key); |
log_init(argv[0], log_level, SYSLOG_FACILITY_USER, 1); |
| arc4random_stir(); |
|
| |
|
| if (!quiet) |
argv += optind; |
| printf("Your identification has been saved in %s.\n", buf); |
argc -= optind; |
| |
|
| /* Display the public key on the screen. */ |
if (ca_key_path != NULL) { |
| if (!quiet) { |
if (argc < 1) { |
| printf("Your public key is:\n"); |
printf("Too few arguments.\n"); |
| printf("%d ", BN_num_bits(public_key->n)); |
usage(); |
| tmpbuf = BN_bn2dec(public_key->e); |
} |
| printf("%s ", tmpbuf); |
} else if (argc > 0) { |
| free(tmpbuf); |
printf("Too many arguments.\n"); |
| tmpbuf = BN_bn2dec(public_key->n); |
usage(); |
| printf("%s %s\n", tmpbuf, buf2); |
} |
| free(tmpbuf); |
if (change_passphrase && change_comment) { |
| } |
printf("Can only have one of -p and -c.\n"); |
| |
usage(); |
| |
} |
| |
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); |
| |
if (change_passphrase) |
| |
do_change_passphrase(pw); |
| |
if (change_comment) |
| |
do_change_comment(pw); |
| |
if (convert_to) |
| |
do_convert_to(pw); |
| |
if (convert_from) |
| |
do_convert_from(pw); |
| |
if (print_public) |
| |
do_print_public(pw); |
| |
if (rr_hostname != NULL) { |
| |
unsigned int n = 0; |
| |
|
| /* Save the public key in text format in a file with the same name but |
if (have_identity) { |
| .pub appended. */ |
n = do_print_resource_record(pw, |
| strcat(buf, ".pub"); |
identity_file, rr_hostname); |
| f = fopen(buf, "w"); |
if (n == 0) { |
| if (!f) |
perror(identity_file); |
| { |
exit(1); |
| printf("Could not save your public key in %s\n", buf); |
} |
| exit(1); |
exit(0); |
| } |
} else { |
| fprintf(f, "%d ", BN_num_bits(public_key->n)); |
|
| tmpbuf = BN_bn2dec(public_key->e); |
|
| fprintf(f, "%s ", tmpbuf); |
|
| free(tmpbuf); |
|
| tmpbuf = BN_bn2dec(public_key->n); |
|
| fprintf(f, "%s %s\n", tmpbuf, buf2); |
|
| free(tmpbuf); |
|
| fclose(f); |
|
| |
|
| if (!quiet) |
n += do_print_resource_record(pw, |
| printf("Your public key has been saved in %s\n", buf); |
_PATH_HOST_RSA_KEY_FILE, rr_hostname); |
| |
n += do_print_resource_record(pw, |
| exit(0); |
_PATH_HOST_DSA_KEY_FILE, rr_hostname); |
| |
|
| |
if (n == 0) |
| |
fatal("no keys found."); |
| |
exit(0); |
| |
} |
| |
} |
| |
if (pkcs11provider != NULL) |
| |
do_download(pw); |
| |
|
| |
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); |
| |
} |
| |
|
| |
if (gen_all_hostkeys) { |
| |
do_gen_all_hostkeys(pw); |
| |
return (0); |
| |
} |
| |
|
| |
arc4random_stir(); |
| |
|
| |
if (key_type_name == NULL) |
| |
key_type_name = "rsa"; |
| |
|
| |
type = key_type_from_name(key_type_name); |
| |
type_bits_valid(type, &bits); |
| |
|
| |
if (!quiet) |
| |
printf("Generating public/private %s key pair.\n", key_type_name); |
| |
private = key_generate(type, bits); |
| |
if (private == NULL) { |
| |
fprintf(stderr, "key_generate failed\n"); |
| |
exit(1); |
| |
} |
| |
public = key_from_private(private); |
| |
|
| |
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. |
| |
*/ |
| |
memset(passphrase1, 0, strlen(passphrase1)); |
| |
memset(passphrase2, 0, strlen(passphrase2)); |
| |
xfree(passphrase1); |
| |
xfree(passphrase2); |
| |
printf("Passphrases do not match. Try again.\n"); |
| |
goto passphrase_again; |
| |
} |
| |
/* Clear the other copy of the passphrase. */ |
| |
memset(passphrase2, 0, strlen(passphrase2)); |
| |
xfree(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 (!key_save_private(private, identity_file, passphrase1, comment)) { |
| |
printf("Saving the key failed: %s.\n", identity_file); |
| |
memset(passphrase1, 0, strlen(passphrase1)); |
| |
xfree(passphrase1); |
| |
exit(1); |
| |
} |
| |
/* Clear the passphrase. */ |
| |
memset(passphrase1, 0, strlen(passphrase1)); |
| |
xfree(passphrase1); |
| |
|
| |
/* Clear the private key and the random number generator. */ |
| |
key_free(private); |
| |
arc4random_stir(); |
| |
|
| |
if (!quiet) |
| |
printf("Your identification has been saved in %s.\n", identity_file); |
| |
|
| |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
| |
fd = open(identity_file, O_WRONLY | O_CREAT | O_TRUNC, 0644); |
| |
if (fd == -1) { |
| |
printf("Could not save your public key in %s\n", identity_file); |
| |
exit(1); |
| |
} |
| |
f = fdopen(fd, "w"); |
| |
if (f == NULL) { |
| |
printf("fdopen %s failed\n", identity_file); |
| |
exit(1); |
| |
} |
| |
if (!key_write(public, f)) |
| |
fprintf(stderr, "write key failed\n"); |
| |
fprintf(f, " %s\n", comment); |
| |
fclose(f); |
| |
|
| |
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", |
| |
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); |
| |
xfree(ra); |
| |
xfree(fp); |
| |
} |
| |
|
| |
key_free(public); |
| |
exit(0); |
| } |
} |
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