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ssh-add.c

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1/* $OpenBSD: ssh-add.c,v 1.136 2018/09/19 02:03:02 djm Exp $ */-
2/*-
3 * Author: Tatu Ylonen <ylo@cs.hut.fi>-
4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland-
5 * All rights reserved-
6 * Adds an identity to the authentication server, or removes an identity.-
7 *-
8 * As far as I am concerned, the code I have written for this software-
9 * can be used freely for any purpose. Any derived versions of this-
10 * software must be clearly marked as such, and if the derived work is-
11 * incompatible with the protocol description in the RFC file, it must be-
12 * called by a name other than "ssh" or "Secure Shell".-
13 *-
14 * SSH2 implementation,-
15 * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.-
16 *-
17 * Redistribution and use in source and binary forms, with or without-
18 * modification, are permitted provided that the following conditions-
19 * are met:-
20 * 1. Redistributions of source code must retain the above copyright-
21 * notice, this list of conditions and the following disclaimer.-
22 * 2. Redistributions in binary form must reproduce the above copyright-
23 * notice, this list of conditions and the following disclaimer in the-
24 * documentation and/or other materials provided with the distribution.-
25 *-
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR-
27 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES-
28 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.-
29 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,-
30 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT-
31 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,-
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY-
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT-
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF-
35 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.-
36 */-
37-
38#include "includes.h"-
39-
40#include <sys/types.h>-
41#include <sys/stat.h>-
42-
43#include <openssl/evp.h>-
44#include "openbsd-compat/openssl-compat.h"-
45-
46#include <errno.h>-
47#include <fcntl.h>-
48#include <pwd.h>-
49#include <stdarg.h>-
50#include <stdio.h>-
51#include <stdlib.h>-
52#include <string.h>-
53#include <unistd.h>-
54#include <limits.h>-
55-
56#include "xmalloc.h"-
57#include "ssh.h"-
58#include "log.h"-
59#include "sshkey.h"-
60#include "sshbuf.h"-
61#include "authfd.h"-
62#include "authfile.h"-
63#include "pathnames.h"-
64#include "misc.h"-
65#include "ssherr.h"-
66#include "digest.h"-
67-
68/* argv0 */-
69extern char *__progname;-
70-
71/* Default files to add */-
72static char *default_files[] = {-
73#ifdef WITH_OPENSSL-
74 _PATH_SSH_CLIENT_ID_RSA,-
75 _PATH_SSH_CLIENT_ID_DSA,-
76#ifdef OPENSSL_HAS_ECC-
77 _PATH_SSH_CLIENT_ID_ECDSA,-
78#endif-
79#endif /* WITH_OPENSSL */-
80 _PATH_SSH_CLIENT_ID_ED25519,-
81 _PATH_SSH_CLIENT_ID_XMSS,-
82 NULL-
83};-
84-
85static int fingerprint_hash = SSH_FP_HASH_DEFAULT;-
86-
87/* Default lifetime (0 == forever) */-
88static int lifetime = 0;-
89-
90/* User has to confirm key use */-
91static int confirm = 0;-
92-
93/* Maximum number of signatures (XMSS) */-
94static u_int maxsign = 0;-
95static u_int minleft = 0;-
96-
97/* we keep a cache of one passphrase */-
98static char *pass = NULL;-
99static void-
100clear_pass(void)-
101{-
102 if (pass) {
passDescription
TRUEnever evaluated
FALSEnever evaluated
0
103 explicit_bzero(pass, strlen(pass));-
104 free(pass);-
105 pass = NULL;-
106 }
never executed: end of block
0
107}
never executed: end of block
0
108-
109static int-
110delete_file(int agent_fd, const char *filename, int key_only, int qflag)-
111{-
112 struct sshkey *public, *cert = NULL;-
113 char *certpath = NULL, *comment = NULL;-
114 int r, ret = -1;-
115-
116 if ((r = sshkey_load_public(filename, &public, &comment)) != 0) {
(r = sshkey_lo...comment)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
117 printf("Bad key file %s: %s\n", filename, ssh_err(r));-
118 return -1;
never executed: return -1;
0
119 }-
120 if ((r = ssh_remove_identity(agent_fd, public)) == 0) {
(r = ssh_remov... public)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
121 if (!qflag) {
!qflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
122 fprintf(stderr, "Identity removed: %s (%s)\n",-
123 filename, comment);-
124 }
never executed: end of block
0
125 ret = 0;-
126 } else
never executed: end of block
0
127 fprintf(stderr, "Could not remove identity \"%s\": %s\n",
never executed: fprintf( stderr , "Could not remove identity \"%s\": %s\n", filename, ssh_err(r));
0
128 filename, ssh_err(r));
never executed: fprintf( stderr , "Could not remove identity \"%s\": %s\n", filename, ssh_err(r));
0
129-
130 if (key_only)
key_onlyDescription
TRUEnever evaluated
FALSEnever evaluated
0
131 goto out;
never executed: goto out;
0
132-
133 /* Now try to delete the corresponding certificate too */-
134 free(comment);-
135 comment = NULL;-
136 xasprintf(&certpath, "%s-cert.pub", filename);-
137 if ((r = sshkey_load_public(certpath, &cert, &comment)) != 0) {
(r = sshkey_lo...comment)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
138 if (r != SSH_ERR_SYSTEM_ERROR || errno != ENOENT)
r != -24Description
TRUEnever evaluated
FALSEnever evaluated
(*__errno_location ()) != 2Description
TRUEnever evaluated
FALSEnever evaluated
0
139 error("Failed to load certificate \"%s\": %s",
never executed: error("Failed to load certificate \"%s\": %s", certpath, ssh_err(r));
0
140 certpath, ssh_err(r));
never executed: error("Failed to load certificate \"%s\": %s", certpath, ssh_err(r));
0
141 goto out;
never executed: goto out;
0
142 }-
143-
144 if (!sshkey_equal_public(cert, public))
!sshkey_equal_...(cert, public)Description
TRUEnever evaluated
FALSEnever evaluated
0
145 fatal("Certificate %s does not match private key %s",
never executed: fatal("Certificate %s does not match private key %s", certpath, filename);
0
146 certpath, filename);
never executed: fatal("Certificate %s does not match private key %s", certpath, filename);
0
147-
148 if ((r = ssh_remove_identity(agent_fd, cert)) == 0) {
(r = ssh_remov...d, cert)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
149 if (!qflag) {
!qflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
150 fprintf(stderr, "Identity removed: %s (%s)\n",-
151 certpath, comment);-
152 }
never executed: end of block
0
153 ret = 0;-
154 } else
never executed: end of block
0
155 fprintf(stderr, "Could not remove identity \"%s\": %s\n",
never executed: fprintf( stderr , "Could not remove identity \"%s\": %s\n", certpath, ssh_err(r));
0
156 certpath, ssh_err(r));
never executed: fprintf( stderr , "Could not remove identity \"%s\": %s\n", certpath, ssh_err(r));
0
157-
158 out:
code before this statement never executed: out:
0
159 sshkey_free(cert);-
160 sshkey_free(public);-
161 free(certpath);-
162 free(comment);-
163-
164 return ret;
never executed: return ret;
0
165}-
166-
167/* Send a request to remove all identities. */-
168static int-
169delete_all(int agent_fd, int qflag)-
170{-
171 int ret = -1;-
172-
173 /*-
174 * Since the agent might be forwarded, old or non-OpenSSH, when asked-
175 * to remove all keys, attempt to remove both protocol v.1 and v.2-
176 * keys.-
177 */-
178 if (ssh_remove_all_identities(agent_fd, 2) == 0)
ssh_remove_all...nt_fd, 2) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
179 ret = 0;
never executed: ret = 0;
0
180 /* ignore error-code for ssh1 */-
181 ssh_remove_all_identities(agent_fd, 1);-
182-
183 if (ret != 0)
ret != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
184 fprintf(stderr, "Failed to remove all identities.\n");
never executed: fprintf( stderr , "Failed to remove all identities.\n");
0
185 else if (!qflag)
!qflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
186 fprintf(stderr, "All identities removed.\n");
never executed: fprintf( stderr , "All identities removed.\n");
0
187-
188 return ret;
never executed: return ret;
0
189}-
190-
191static int-
192add_file(int agent_fd, const char *filename, int key_only, int qflag)-
193{-
194 struct sshkey *private, *cert;-
195 char *comment = NULL;-
196 char msg[1024], *certpath = NULL;-
197 int r, fd, ret = -1;-
198 size_t i;-
199 u_int32_t left;-
200 struct sshbuf *keyblob;-
201 struct ssh_identitylist *idlist;-
202-
203 if (strcmp(filename, "-") == 0) {
never executed: __result = (((const unsigned char *) (const char *) ( filename ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
never executed: __result = (((const unsigned char *) (const char *) ( "-" ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
__extension__ ... )))); }) == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
204 fd = STDIN_FILENO;-
205 filename = "(stdin)";-
206 } else if ((fd = open(filename, O_RDONLY)) < 0) {
never executed: end of block
(fd = open(filename, 00 )) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
207 perror(filename);-
208 return -1;
never executed: return -1;
0
209 }-
210-
211 /*-
212 * Since we'll try to load a keyfile multiple times, permission errors-
213 * will occur multiple times, so check perms first and bail if wrong.-
214 */-
215 if (fd != STDIN_FILENO) {
fd != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
216 if (sshkey_perm_ok(fd, filename) != 0) {
sshkey_perm_ok...filename) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
217 close(fd);-
218 return -1;
never executed: return -1;
0
219 }-
220 }
never executed: end of block
0
221 if ((keyblob = sshbuf_new()) == NULL)
(keyblob = ssh...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
222 fatal("%s: sshbuf_new failed", __func__);
never executed: fatal("%s: sshbuf_new failed", __func__);
0
223 if ((r = sshkey_load_file(fd, keyblob)) != 0) {
(r = sshkey_lo...keyblob)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
224 fprintf(stderr, "Error loading key \"%s\": %s\n",-
225 filename, ssh_err(r));-
226 sshbuf_free(keyblob);-
227 close(fd);-
228 return -1;
never executed: return -1;
0
229 }-
230 close(fd);-
231-
232 /* At first, try empty passphrase */-
233 if ((r = sshkey_parse_private_fileblob(keyblob, "", &private,
(r = sshkey_pa...comment)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
234 &comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE) {
(r = sshkey_pa...comment)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
r != -43Description
TRUEnever evaluated
FALSEnever evaluated
0
235 fprintf(stderr, "Error loading key \"%s\": %s\n",-
236 filename, ssh_err(r));-
237 goto fail_load;
never executed: goto fail_load;
0
238 }-
239 /* try last */-
240 if (private == NULL && pass != NULL) {
private == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
pass != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
241 if ((r = sshkey_parse_private_fileblob(keyblob, pass, &private,
(r = sshkey_pa...comment)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
242 &comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE) {
(r = sshkey_pa...comment)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
r != -43Description
TRUEnever evaluated
FALSEnever evaluated
0
243 fprintf(stderr, "Error loading key \"%s\": %s\n",-
244 filename, ssh_err(r));-
245 goto fail_load;
never executed: goto fail_load;
0
246 }-
247 }
never executed: end of block
0
248 if (private == NULL) {
private == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
249 /* clear passphrase since it did not work */-
250 clear_pass();-
251 snprintf(msg, sizeof msg, "Enter passphrase for %s%s: ",-
252 filename, confirm ? " (will confirm each use)" : "");-
253 for (;;) {-
254 pass = read_passphrase(msg, RP_ALLOW_STDIN);-
255 if (strcmp(pass, "") == 0)
never executed: __result = (((const unsigned char *) (const char *) ( pass ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
never executed: __result = (((const unsigned char *) (const char *) ( "" ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
__extension__ ... )))); }) == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
256 goto fail_load;
never executed: goto fail_load;
0
257 if ((r = sshkey_parse_private_fileblob(keyblob, pass,
(r = sshkey_pa...comment)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
258 &private, &comment)) == 0)
(r = sshkey_pa...comment)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
259 break;
never executed: break;
0
260 else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE) {
r != -43Description
TRUEnever evaluated
FALSEnever evaluated
0
261 fprintf(stderr,-
262 "Error loading key \"%s\": %s\n",-
263 filename, ssh_err(r));-
264 fail_load:
code before this statement never executed: fail_load:
0
265 clear_pass();-
266 sshbuf_free(keyblob);-
267 return -1;
never executed: return -1;
0
268 }-
269 clear_pass();-
270 snprintf(msg, sizeof msg,-
271 "Bad passphrase, try again for %s%s: ", filename,-
272 confirm ? " (will confirm each use)" : "");-
273 }
never executed: end of block
0
274 }
never executed: end of block
0
275 if (comment == NULL || *comment == '\0')
comment == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
*comment == '\0'Description
TRUEnever evaluated
FALSEnever evaluated
0
276 comment = xstrdup(filename);
never executed: comment = xstrdup(filename);
0
277 sshbuf_free(keyblob);-
278-
279 /* For XMSS */-
280 if ((r = sshkey_set_filename(private, filename)) != 0) {
(r = sshkey_se...ilename)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
281 fprintf(stderr, "Could not add filename to private key: %s (%s)\n",-
282 filename, comment);-
283 goto out;
never executed: goto out;
0
284 }-
285 if (maxsign && minleft &&
maxsignDescription
TRUEnever evaluated
FALSEnever evaluated
minleftDescription
TRUEnever evaluated
FALSEnever evaluated
0
286 (r = ssh_fetch_identitylist(agent_fd, &idlist)) == 0) {
(r = ssh_fetch...&idlist)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
287 for (i = 0; i < idlist->nkeys; i++) {
i < idlist->nkeysDescription
TRUEnever evaluated
FALSEnever evaluated
0
288 if (!sshkey_equal_public(idlist->keys[i], private))
!sshkey_equal_...s[i], private)Description
TRUEnever evaluated
FALSEnever evaluated
0
289 continue;
never executed: continue;
0
290 left = sshkey_signatures_left(idlist->keys[i]);-
291 if (left < minleft) {
left < minleftDescription
TRUEnever evaluated
FALSEnever evaluated
0
292 fprintf(stderr,-
293 "Only %d signatures left.\n", left);-
294 break;
never executed: break;
0
295 }-
296 fprintf(stderr, "Skipping update: ");-
297 if (left == minleft) {
left == minleftDescription
TRUEnever evaluated
FALSEnever evaluated
0
298 fprintf(stderr,-
299 "required signatures left (%d).\n", left);-
300 } else {
never executed: end of block
0
301 fprintf(stderr,-
302 "more signatures left (%d) than"-
303 " required (%d).\n", left, minleft);-
304 }
never executed: end of block
0
305 ssh_free_identitylist(idlist);-
306 goto out;
never executed: goto out;
0
307 }-
308 ssh_free_identitylist(idlist);-
309 }
never executed: end of block
0
310-
311 if ((r = ssh_add_identity_constrained(agent_fd, private, comment,
(r = ssh_add_i...maxsign)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
312 lifetime, confirm, maxsign)) == 0) {
(r = ssh_add_i...maxsign)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
313 ret = 0;-
314 if (!qflag) {
!qflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
315 fprintf(stderr, "Identity added: %s (%s)\n",-
316 filename, comment);-
317 if (lifetime != 0) {
lifetime != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
318 fprintf(stderr,-
319 "Lifetime set to %d seconds\n", lifetime);-
320 }
never executed: end of block
0
321 if (confirm != 0) {
confirm != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
322 fprintf(stderr, "The user must confirm "-
323 "each use of the key\n");-
324 }
never executed: end of block
0
325 }
never executed: end of block
0
326 } else {
never executed: end of block
0
327 fprintf(stderr, "Could not add identity \"%s\": %s\n",-
328 filename, ssh_err(r));-
329 }
never executed: end of block
0
330-
331 /* Skip trying to load the cert if requested */-
332 if (key_only)
key_onlyDescription
TRUEnever evaluated
FALSEnever evaluated
0
333 goto out;
never executed: goto out;
0
334-
335 /* Now try to add the certificate flavour too */-
336 xasprintf(&certpath, "%s-cert.pub", filename);-
337 if ((r = sshkey_load_public(certpath, &cert, NULL)) != 0) {
(r = sshkey_lo...d *)0) )) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
338 if (r != SSH_ERR_SYSTEM_ERROR || errno != ENOENT)
r != -24Description
TRUEnever evaluated
FALSEnever evaluated
(*__errno_location ()) != 2Description
TRUEnever evaluated
FALSEnever evaluated
0
339 error("Failed to load certificate \"%s\": %s",
never executed: error("Failed to load certificate \"%s\": %s", certpath, ssh_err(r));
0
340 certpath, ssh_err(r));
never executed: error("Failed to load certificate \"%s\": %s", certpath, ssh_err(r));
0
341 goto out;
never executed: goto out;
0
342 }-
343-
344 if (!sshkey_equal_public(cert, private)) {
!sshkey_equal_...cert, private)Description
TRUEnever evaluated
FALSEnever evaluated
0
345 error("Certificate %s does not match private key %s",-
346 certpath, filename);-
347 sshkey_free(cert);-
348 goto out;
never executed: goto out;
0
349 } -
350-
351 /* Graft with private bits */-
352 if ((r = sshkey_to_certified(private)) != 0) {
(r = sshkey_to...private)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
353 error("%s: sshkey_to_certified: %s", __func__, ssh_err(r));-
354 sshkey_free(cert);-
355 goto out;
never executed: goto out;
0
356 }-
357 if ((r = sshkey_cert_copy(cert, private)) != 0) {
(r = sshkey_ce...private)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
358 error("%s: sshkey_cert_copy: %s", __func__, ssh_err(r));-
359 sshkey_free(cert);-
360 goto out;
never executed: goto out;
0
361 }-
362 sshkey_free(cert);-
363-
364 if ((r = ssh_add_identity_constrained(agent_fd, private, comment,
(r = ssh_add_i...maxsign)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
365 lifetime, confirm, maxsign)) != 0) {
(r = ssh_add_i...maxsign)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
366 error("Certificate %s (%s) add failed: %s", certpath,-
367 private->cert->key_id, ssh_err(r));-
368 goto out;
never executed: goto out;
0
369 }-
370 /* success */-
371 if (!qflag) {
!qflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
372 fprintf(stderr, "Certificate added: %s (%s)\n", certpath,-
373 private->cert->key_id);-
374 if (lifetime != 0) {
lifetime != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
375 fprintf(stderr, "Lifetime set to %d seconds\n",-
376 lifetime);-
377 }
never executed: end of block
0
378 if (confirm != 0) {
confirm != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
379 fprintf(stderr, "The user must confirm each use "-
380 "of the key\n");-
381 }
never executed: end of block
0
382 }
never executed: end of block
0
383-
384 out:
code before this statement never executed: out:
0
385 free(certpath);-
386 free(comment);-
387 sshkey_free(private);-
388-
389 return ret;
never executed: return ret;
0
390}-
391-
392static int-
393update_card(int agent_fd, int add, const char *id, int qflag)-
394{-
395 char *pin = NULL;-
396 int r, ret = -1;-
397-
398 if (add) {
addDescription
TRUEnever evaluated
FALSEnever evaluated
0
399 if ((pin = read_passphrase("Enter passphrase for PKCS#11: ",
(pin = read_pa...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
400 RP_ALLOW_STDIN)) == NULL)
(pin = read_pa...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
401 return -1;
never executed: return -1;
0
402 }
never executed: end of block
0
403-
404 if ((r = ssh_update_card(agent_fd, add, id, pin == NULL ? "" : pin,
(r = ssh_updat...confirm)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
405 lifetime, confirm)) == 0) {
(r = ssh_updat...confirm)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
406 ret = 0;-
407 if (!qflag) {
!qflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
408 fprintf(stderr, "Card %s: %s\n",-
409 add ? "added" : "removed", id);-
410 }
never executed: end of block
0
411 } else {
never executed: end of block
0
412 fprintf(stderr, "Could not %s card \"%s\": %s\n",-
413 add ? "add" : "remove", id, ssh_err(r));-
414 ret = -1;-
415 }
never executed: end of block
0
416 free(pin);-
417 return ret;
never executed: return ret;
0
418}-
419-
420static int-
421list_identities(int agent_fd, int do_fp)-
422{-
423 char *fp;-
424 int r;-
425 struct ssh_identitylist *idlist;-
426 u_int32_t left;-
427 size_t i;-
428-
429 if ((r = ssh_fetch_identitylist(agent_fd, &idlist)) != 0) {
(r = ssh_fetch...&idlist)) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
430 if (r != SSH_ERR_AGENT_NO_IDENTITIES)
r != -48Description
TRUEnever evaluated
FALSEnever evaluated
0
431 fprintf(stderr, "error fetching identities: %s\n",
never executed: fprintf( stderr , "error fetching identities: %s\n", ssh_err(r));
0
432 ssh_err(r));
never executed: fprintf( stderr , "error fetching identities: %s\n", ssh_err(r));
0
433 else-
434 printf("The agent has no identities.\n");
never executed: printf("The agent has no identities.\n");
0
435 return -1;
never executed: return -1;
0
436 }-
437 for (i = 0; i < idlist->nkeys; i++) {
i < idlist->nkeysDescription
TRUEnever evaluated
FALSEnever evaluated
0
438 if (do_fp) {
do_fpDescription
TRUEnever evaluated
FALSEnever evaluated
0
439 fp = sshkey_fingerprint(idlist->keys[i],-
440 fingerprint_hash, SSH_FP_DEFAULT);-
441 printf("%u %s %s (%s)\n", sshkey_size(idlist->keys[i]),-
442 fp == NULL ? "(null)" : fp, idlist->comments[i],-
443 sshkey_type(idlist->keys[i]));-
444 free(fp);-
445 } else {
never executed: end of block
0
446 if ((r = sshkey_write(idlist->keys[i], stdout)) != 0) {
(r = sshkey_wr...stdout )) != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
447 fprintf(stderr, "sshkey_write: %s\n",-
448 ssh_err(r));-
449 continue;
never executed: continue;
0
450 }-
451 fprintf(stdout, " %s", idlist->comments[i]);-
452 left = sshkey_signatures_left(idlist->keys[i]);-
453 if (left > 0)
left > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
454 fprintf(stdout,
never executed: fprintf( stdout , " [signatures left %d]", left);
0
455 " [signatures left %d]", left);
never executed: fprintf( stdout , " [signatures left %d]", left);
0
456 fprintf(stdout, "\n");-
457 }
never executed: end of block
0
458 }-
459 ssh_free_identitylist(idlist);-
460 return 0;
never executed: return 0;
0
461}-
462-
463static int-
464lock_agent(int agent_fd, int lock)-
465{-
466 char prompt[100], *p1, *p2;-
467 int r, passok = 1, ret = -1;-
468-
469 strlcpy(prompt, "Enter lock password: ", sizeof(prompt));-
470 p1 = read_passphrase(prompt, RP_ALLOW_STDIN);-
471 if (lock) {
lockDescription
TRUEnever evaluated
FALSEnever evaluated
0
472 strlcpy(prompt, "Again: ", sizeof prompt);-
473 p2 = read_passphrase(prompt, RP_ALLOW_STDIN);-
474 if (strcmp(p1, p2) != 0) {
never executed: __result = (((const unsigned char *) (const char *) ( p1 ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
never executed: __result = (((const unsigned char *) (const char *) ( p2 ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
__extension__ ... )))); }) != 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
475 fprintf(stderr, "Passwords do not match.\n");-
476 passok = 0;-
477 }
never executed: end of block
0
478 explicit_bzero(p2, strlen(p2));-
479 free(p2);-
480 }
never executed: end of block
0
481 if (passok) {
passokDescription
TRUEnever evaluated
FALSEnever evaluated
0
482 if ((r = ssh_lock_agent(agent_fd, lock, p1)) == 0) {
(r = ssh_lock_...ock, p1)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
483 fprintf(stderr, "Agent %slocked.\n", lock ? "" : "un");-
484 ret = 0;-
485 } else {
never executed: end of block
0
486 fprintf(stderr, "Failed to %slock agent: %s\n",-
487 lock ? "" : "un", ssh_err(r));-
488 }
never executed: end of block
0
489 }-
490 explicit_bzero(p1, strlen(p1));-
491 free(p1);-
492 return (ret);
never executed: return (ret);
0
493}-
494-
495static int-
496do_file(int agent_fd, int deleting, int key_only, char *file, int qflag)-
497{-
498 if (deleting) {
deletingDescription
TRUEnever evaluated
FALSEnever evaluated
0
499 if (delete_file(agent_fd, file, key_only, qflag) == -1)
delete_file(ag..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
500 return -1;
never executed: return -1;
0
501 } else {
never executed: end of block
0
502 if (add_file(agent_fd, file, key_only, qflag) == -1)
add_file(agent..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
503 return -1;
never executed: return -1;
0
504 }
never executed: end of block
0
505 return 0;
never executed: return 0;
0
506}-
507-
508static void-
509usage(void)-
510{-
511 fprintf(stderr, "usage: %s [options] [file ...]\n", __progname);-
512 fprintf(stderr, "Options:\n");-
513 fprintf(stderr, " -l List fingerprints of all identities.\n");-
514 fprintf(stderr, " -E hash Specify hash algorithm used for fingerprints.\n");-
515 fprintf(stderr, " -L List public key parameters of all identities.\n");-
516 fprintf(stderr, " -k Load only keys and not certificates.\n");-
517 fprintf(stderr, " -c Require confirmation to sign using identities\n");-
518 fprintf(stderr, " -m minleft Maxsign is only changed if less than minleft are left (for XMSS)\n");-
519 fprintf(stderr, " -M maxsign Maximum number of signatures allowed (for XMSS)\n");-
520 fprintf(stderr, " -t life Set lifetime (in seconds) when adding identities.\n");-
521 fprintf(stderr, " -d Delete identity.\n");-
522 fprintf(stderr, " -D Delete all identities.\n");-
523 fprintf(stderr, " -x Lock agent.\n");-
524 fprintf(stderr, " -X Unlock agent.\n");-
525 fprintf(stderr, " -s pkcs11 Add keys from PKCS#11 provider.\n");-
526 fprintf(stderr, " -e pkcs11 Remove keys provided by PKCS#11 provider.\n");-
527 fprintf(stderr, " -q Be quiet after a successful operation.\n");-
528}
never executed: end of block
0
529-
530int-
531main(int argc, char **argv)-
532{-
533 extern char *optarg;-
534 extern int optind;-
535 int agent_fd;-
536 char *pkcs11provider = NULL;-
537 int r, i, ch, deleting = 0, ret = 0, key_only = 0;-
538 int xflag = 0, lflag = 0, Dflag = 0, qflag = 0;-
539-
540 ssh_malloc_init(); /* must be called before any mallocs */-
541 /* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */-
542 sanitise_stdfd();-
543-
544 __progname = ssh_get_progname(argv[0]);-
545 seed_rng();-
546-
547#ifdef WITH_OPENSSL-
548 OpenSSL_add_all_algorithms();-
549#endif-
550-
551 setvbuf(stdout, NULL, _IOLBF, 0);-
552-
553 /* First, get a connection to the authentication agent. */-
554 switch (r = ssh_get_authentication_socket(&agent_fd)) {-
555 case 0:
never executed: case 0:
0
556 break;
never executed: break;
0
557 case SSH_ERR_AGENT_NOT_PRESENT:
never executed: case -47:
0
558 fprintf(stderr, "Could not open a connection to your "-
559 "authentication agent.\n");-
560 exit(2);
never executed: exit(2);
0
561 default:
code before this statement never executed: default:
never executed: default:
0
562 fprintf(stderr, "Error connecting to agent: %s\n", ssh_err(r));-
563 exit(2);
never executed: exit(2);
0
564 }-
565-
566 while ((ch = getopt(argc, argv, "klLcdDxXE:e:M:m:qs:t:")) != -1) {
(ch = BSDgetop...qs:t:")) != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
567 switch (ch) {-
568 case 'E':
never executed: case 'E':
0
569 fingerprint_hash = ssh_digest_alg_by_name(optarg);-
570 if (fingerprint_hash == -1)
fingerprint_hash == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
571 fatal("Invalid hash algorithm \"%s\"", optarg);
never executed: fatal("Invalid hash algorithm \"%s\"", BSDoptarg);
0
572 break;
never executed: break;
0
573 case 'k':
never executed: case 'k':
0
574 key_only = 1;-
575 break;
never executed: break;
0
576 case 'l':
never executed: case 'l':
0
577 case 'L':
never executed: case 'L':
0
578 if (lflag != 0)
lflag != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
579 fatal("-%c flag already specified", lflag);
never executed: fatal("-%c flag already specified", lflag);
0
580 lflag = ch;-
581 break;
never executed: break;
0
582 case 'x':
never executed: case 'x':
0
583 case 'X':
never executed: case 'X':
0
584 if (xflag != 0)
xflag != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
585 fatal("-%c flag already specified", xflag);
never executed: fatal("-%c flag already specified", xflag);
0
586 xflag = ch;-
587 break;
never executed: break;
0
588 case 'c':
never executed: case 'c':
0
589 confirm = 1;-
590 break;
never executed: break;
0
591 case 'm':
never executed: case 'm':
0
592 minleft = (int)strtonum(optarg, 1, UINT_MAX, NULL);-
593 if (minleft == 0) {
minleft == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
594 usage();-
595 ret = 1;-
596 goto done;
never executed: goto done;
0
597 }-
598 break;
never executed: break;
0
599 case 'M':
never executed: case 'M':
0
600 maxsign = (int)strtonum(optarg, 1, UINT_MAX, NULL);-
601 if (maxsign == 0) {
maxsign == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
602 usage();-
603 ret = 1;-
604 goto done;
never executed: goto done;
0
605 }-
606 break;
never executed: break;
0
607 case 'd':
never executed: case 'd':
0
608 deleting = 1;-
609 break;
never executed: break;
0
610 case 'D':
never executed: case 'D':
0
611 Dflag = 1;-
612 break;
never executed: break;
0
613 case 's':
never executed: case 's':
0
614 pkcs11provider = optarg;-
615 break;
never executed: break;
0
616 case 'e':
never executed: case 'e':
0
617 deleting = 1;-
618 pkcs11provider = optarg;-
619 break;
never executed: break;
0
620 case 't':
never executed: case 't':
0
621 if ((lifetime = convtime(optarg)) == -1) {
(lifetime = co...optarg)) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
622 fprintf(stderr, "Invalid lifetime\n");-
623 ret = 1;-
624 goto done;
never executed: goto done;
0
625 }-
626 break;
never executed: break;
0
627 case 'q':
never executed: case 'q':
0
628 qflag = 1;-
629 break;
never executed: break;
0
630 default:
never executed: default:
0
631 usage();-
632 ret = 1;-
633 goto done;
never executed: goto done;
0
634 }-
635 }-
636-
637 if ((xflag != 0) + (lflag != 0) + (Dflag != 0) > 1)
(xflag != 0) +...flag != 0) > 1Description
TRUEnever evaluated
FALSEnever evaluated
0
638 fatal("Invalid combination of actions");
never executed: fatal("Invalid combination of actions");
0
639 else if (xflag) {
xflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
640 if (lock_agent(agent_fd, xflag == 'x' ? 1 : 0) == -1)
lock_agent(age...? 1 : 0) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
641 ret = 1;
never executed: ret = 1;
0
642 goto done;
never executed: goto done;
0
643 } else if (lflag) {
lflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
644 if (list_identities(agent_fd, lflag == 'l' ? 1 : 0) == -1)
list_identitie...? 1 : 0) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
645 ret = 1;
never executed: ret = 1;
0
646 goto done;
never executed: goto done;
0
647 } else if (Dflag) {
DflagDescription
TRUEnever evaluated
FALSEnever evaluated
0
648 if (delete_all(agent_fd, qflag) == -1)
delete_all(age..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
649 ret = 1;
never executed: ret = 1;
0
650 goto done;
never executed: goto done;
0
651 }-
652-
653 argc -= optind;-
654 argv += optind;-
655 if (pkcs11provider != NULL) {
pkcs11provider != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
656 if (update_card(agent_fd, !deleting, pkcs11provider,
update_card(ag..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
657 qflag) == -1)
update_card(ag..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
658 ret = 1;
never executed: ret = 1;
0
659 goto done;
never executed: goto done;
0
660 }-
661 if (argc == 0) {
argc == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
662 char buf[PATH_MAX];-
663 struct passwd *pw;-
664 struct stat st;-
665 int count = 0;-
666-
667 if ((pw = getpwuid(getuid())) == NULL) {
(pw = getpwuid...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
668 fprintf(stderr, "No user found with uid %u\n",-
669 (u_int)getuid());-
670 ret = 1;-
671 goto done;
never executed: goto done;
0
672 }-
673-
674 for (i = 0; default_files[i]; i++) {
default_files[i]Description
TRUEnever evaluated
FALSEnever evaluated
0
675 snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir,-
676 default_files[i]);-
677 if (stat(buf, &st) < 0)
stat(buf, &st) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
678 continue;
never executed: continue;
0
679 if (do_file(agent_fd, deleting, key_only, buf,
do_file(agent_..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
680 qflag) == -1)
do_file(agent_..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
681 ret = 1;
never executed: ret = 1;
0
682 else-
683 count++;
never executed: count++;
0
684 }-
685 if (count == 0)
count == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
686 ret = 1;
never executed: ret = 1;
0
687 } else {
never executed: end of block
0
688 for (i = 0; i < argc; i++) {
i < argcDescription
TRUEnever evaluated
FALSEnever evaluated
0
689 if (do_file(agent_fd, deleting, key_only,
do_file(agent_..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
690 argv[i], qflag) == -1)
do_file(agent_..., qflag) == -1Description
TRUEnever evaluated
FALSEnever evaluated
0
691 ret = 1;
never executed: ret = 1;
0
692 }
never executed: end of block
0
693 }
never executed: end of block
0
694 clear_pass();-
695-
696done:
code before this statement never executed: done:
0
697 ssh_close_authentication_socket(agent_fd);-
698 return ret;
never executed: return ret;
0
699}-
Source codeSwitch to Preprocessed file
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