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19 | | - |
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24 | | - |
25 | | - |
26 | | - |
27 | #include "includes.h" | - |
28 | | - |
29 | #include <sys/types.h> | - |
30 | #include <sys/socket.h> | - |
31 | #include <sys/wait.h> | - |
32 | #include <sys/stat.h> | - |
33 | | - |
34 | #include <errno.h> | - |
35 | #include <fcntl.h> | - |
36 | #include <netdb.h> | - |
37 | #include <pwd.h> | - |
38 | #include <signal.h> | - |
39 | #include <stdarg.h> | - |
40 | #include <stdio.h> | - |
41 | #include <string.h> | - |
42 | #include <unistd.h> | - |
43 | #if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS) | - |
44 | #include <vis.h> | - |
45 | #endif | - |
46 | | - |
47 | #include "openbsd-compat/sys-queue.h" | - |
48 | | - |
49 | #include "xmalloc.h" | - |
50 | #include "ssh.h" | - |
51 | #include "ssh2.h" | - |
52 | #include "sshbuf.h" | - |
53 | #include "packet.h" | - |
54 | #include "compat.h" | - |
55 | #include "cipher.h" | - |
56 | #include "sshkey.h" | - |
57 | #include "kex.h" | - |
58 | #include "myproposal.h" | - |
59 | #include "sshconnect.h" | - |
60 | #include "authfile.h" | - |
61 | #include "dh.h" | - |
62 | #include "authfd.h" | - |
63 | #include "log.h" | - |
64 | #include "misc.h" | - |
65 | #include "readconf.h" | - |
66 | #include "match.h" | - |
67 | #include "dispatch.h" | - |
68 | #include "canohost.h" | - |
69 | #include "msg.h" | - |
70 | #include "pathnames.h" | - |
71 | #include "uidswap.h" | - |
72 | #include "hostfile.h" | - |
73 | #include "ssherr.h" | - |
74 | #include "utf8.h" | - |
75 | | - |
76 | #ifdef GSSAPI | - |
77 | #include "ssh-gss.h" | - |
78 | #endif | - |
79 | | - |
80 | | - |
81 | extern char *client_version_string; | - |
82 | extern char *server_version_string; | - |
83 | extern Options options; | - |
84 | | - |
85 | | - |
86 | | - |
87 | | - |
88 | | - |
89 | u_char *session_id2 = NULL; | - |
90 | u_int session_id2_len = 0; | - |
91 | | - |
92 | char *xxx_host; | - |
93 | struct sockaddr *xxx_hostaddr; | - |
94 | | - |
95 | static int | - |
96 | verify_host_key_callback(struct sshkey *hostkey, struct ssh *ssh) | - |
97 | { | - |
98 | if (verify_host_key(xxx_host, xxx_hostaddr, hostkey) == -1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
99 | fatal("Host key verification failed."); never executed: fatal("Host key verification failed."); | 0 |
100 | return 0; never executed: return 0; | 0 |
101 | } | - |
102 | | - |
103 | static char * | - |
104 | order_hostkeyalgs(char *host, struct sockaddr *hostaddr, u_short port) | - |
105 | { | - |
106 | char *oavail, *avail, *first, *last, *alg, *hostname, *ret; | - |
107 | size_t maxlen; | - |
108 | struct hostkeys *hostkeys; | - |
109 | int ktype; | - |
110 | u_int i; | - |
111 | | - |
112 | | - |
113 | get_hostfile_hostname_ipaddr(host, hostaddr, port, &hostname, NULL); | - |
114 | hostkeys = init_hostkeys(); | - |
115 | for (i = 0; i < options.num_user_hostfiles; i++)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
116 | load_hostkeys(hostkeys, hostname, options.user_hostfiles[i]); never executed: load_hostkeys(hostkeys, hostname, options.user_hostfiles[i]); | 0 |
117 | for (i = 0; i < options.num_system_hostfiles; i++)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
118 | load_hostkeys(hostkeys, hostname, options.system_hostfiles[i]); never executed: load_hostkeys(hostkeys, hostname, options.system_hostfiles[i]); | 0 |
119 | | - |
120 | oavail = avail = xstrdup(KEX_DEFAULT_PK_ALG); | - |
121 | maxlen = strlen(avail) + 1; | - |
122 | first = xmalloc(maxlen); | - |
123 | last = xmalloc(maxlen); | - |
124 | *first = *last = '\0'; | - |
125 | | - |
126 | #define ALG_APPEND(to, from) \ | - |
127 | do { \ | - |
128 | if (*to != '\0') \ | - |
129 | strlcat(to, ",", maxlen); \ | - |
130 | strlcat(to, from, maxlen); \ | - |
131 | } while (0) | - |
132 | | - |
133 | while ((alg = strsep(&avail, ",")) && *alg != '\0') {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
134 | if ((ktype = sshkey_type_from_name(alg)) == KEY_UNSPEC)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
135 | fatal("%s: unknown alg %s", __func__, alg); never executed: fatal("%s: unknown alg %s", __func__, alg); | 0 |
136 | if (lookup_key_in_hostkeys_by_type(hostkeys,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
137 | sshkey_type_plain(ktype), NULL))TRUE | never evaluated | FALSE | never evaluated |
| 0 |
138 | ALG_APPEND(first, alg); never executed: strlcat(first, ",", maxlen); never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
| 0 |
139 | else | - |
140 | ALG_APPEND(last, alg); never executed: strlcat(last, ",", maxlen); never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
| 0 |
141 | } | - |
142 | #undef ALG_APPEND | - |
143 | xasprintf(&ret, "%s%s%s", first, | - |
144 | (*first == '\0' || *last == '\0') ? "" : ",", last); | - |
145 | if (*first != '\0')TRUE | never evaluated | FALSE | never evaluated |
| 0 |
146 | debug3("%s: prefer hostkeyalgs: %s", __func__, first); never executed: debug3("%s: prefer hostkeyalgs: %s", __func__, first); | 0 |
147 | | - |
148 | free(first); | - |
149 | free(last); | - |
150 | free(hostname); | - |
151 | free(oavail); | - |
152 | free_hostkeys(hostkeys); | - |
153 | | - |
154 | return ret; never executed: return ret; | 0 |
155 | } | - |
156 | | - |
157 | void | - |
158 | ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port) | - |
159 | { | - |
160 | char *myproposal[PROPOSAL_MAX] = { KEX_CLIENT }; | - |
161 | char *s, *all_key; | - |
162 | struct kex *kex; | - |
163 | int r; | - |
164 | | - |
165 | xxx_host = host; | - |
166 | xxx_hostaddr = hostaddr; | - |
167 | | - |
168 | if ((s = kex_names_cat(options.kex_algorithms, "ext-info-c")) == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
169 | fatal("%s: kex_names_cat", __func__); never executed: fatal("%s: kex_names_cat", __func__); | 0 |
170 | myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(s); | - |
171 | myproposal[PROPOSAL_ENC_ALGS_CTOS] = | - |
172 | compat_cipher_proposal(options.ciphers); | - |
173 | myproposal[PROPOSAL_ENC_ALGS_STOC] = | - |
174 | compat_cipher_proposal(options.ciphers); | - |
175 | myproposal[PROPOSAL_COMP_ALGS_CTOS] = | - |
176 | myproposal[PROPOSAL_COMP_ALGS_STOC] = options.compression ?TRUE | never evaluated | FALSE | never evaluated |
| 0 |
177 | "zlib@openssh.com,zlib,none" : "none,zlib@openssh.com,zlib"; | - |
178 | myproposal[PROPOSAL_MAC_ALGS_CTOS] = | - |
179 | myproposal[PROPOSAL_MAC_ALGS_STOC] = options.macs; | - |
180 | if (options.hostkeyalgorithms != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
181 | all_key = sshkey_alg_list(0, 0, 1, ','); | - |
182 | if (kex_assemble_names(&options.hostkeyalgorithms,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
183 | KEX_DEFAULT_PK_ALG, all_key) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
184 | fatal("%s: kex_assemble_namelist", __func__); never executed: fatal("%s: kex_assemble_namelist", __func__); | 0 |
185 | free(all_key); | - |
186 | myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] = | - |
187 | compat_pkalg_proposal(options.hostkeyalgorithms); | - |
188 | } else { never executed: end of block | 0 |
189 | | - |
190 | options.hostkeyalgorithms = xstrdup(KEX_DEFAULT_PK_ALG); | - |
191 | | - |
192 | myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] = | - |
193 | compat_pkalg_proposal( | - |
194 | order_hostkeyalgs(host, hostaddr, port)); | - |
195 | } never executed: end of block | 0 |
196 | | - |
197 | if (options.rekey_limit || options.rekey_interval)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
198 | packet_set_rekey_limits(options.rekey_limit, never executed: ssh_packet_set_rekey_limits(active_state, options.rekey_limit, options.rekey_interval) ; | 0 |
199 | options.rekey_interval); never executed: ssh_packet_set_rekey_limits(active_state, options.rekey_limit, options.rekey_interval) ; | 0 |
200 | | - |
201 | | - |
202 | if ((r = kex_setup(active_state, myproposal)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
203 | fatal("kex_setup: %s", ssh_err(r)); never executed: fatal("kex_setup: %s", ssh_err(r)); | 0 |
204 | kex = active_state->kex; | - |
205 | #ifdef WITH_OPENSSL | - |
206 | kex->kex[KEX_DH_GRP1_SHA1] = kexdh_client; | - |
207 | kex->kex[KEX_DH_GRP14_SHA1] = kexdh_client; | - |
208 | kex->kex[KEX_DH_GRP14_SHA256] = kexdh_client; | - |
209 | kex->kex[KEX_DH_GRP16_SHA512] = kexdh_client; | - |
210 | kex->kex[KEX_DH_GRP18_SHA512] = kexdh_client; | - |
211 | kex->kex[KEX_DH_GEX_SHA1] = kexgex_client; | - |
212 | kex->kex[KEX_DH_GEX_SHA256] = kexgex_client; | - |
213 | # ifdef OPENSSL_HAS_ECC | - |
214 | kex->kex[KEX_ECDH_SHA2] = kexecdh_client; | - |
215 | # endif | - |
216 | #endif | - |
217 | kex->kex[KEX_C25519_SHA256] = kexc25519_client; | - |
218 | kex->client_version_string=client_version_string; | - |
219 | kex->server_version_string=server_version_string; | - |
220 | kex->verify_host_key=&verify_host_key_callback; | - |
221 | | - |
222 | ssh_dispatch_run_fatal(active_state, DISPATCH_BLOCK, &kex->done); | - |
223 | | - |
224 | | - |
225 | myproposal[PROPOSAL_KEX_ALGS] = | - |
226 | compat_kex_proposal(options.kex_algorithms); | - |
227 | if ((r = kex_prop2buf(kex->my, myproposal)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
228 | fatal("kex_prop2buf: %s", ssh_err(r)); never executed: fatal("kex_prop2buf: %s", ssh_err(r)); | 0 |
229 | | - |
230 | session_id2 = kex->session_id; | - |
231 | session_id2_len = kex->session_id_len; | - |
232 | | - |
233 | #ifdef DEBUG_KEXDH | - |
234 | | - |
235 | if ((r = sshpkt_start(ssh, SSH2_MSG_IGNORE)) != 0 || | - |
236 | (r = sshpkt_put_cstring(ssh, "markus")) != 0 || | - |
237 | (r = sshpkt_send(ssh)) != 0 || | - |
238 | (r = ssh_packet_write_wait(ssh)) != 0) | - |
239 | fatal("%s: %s", __func__, ssh_err(r)); | - |
240 | #endif | - |
241 | } never executed: end of block | 0 |
242 | | - |
243 | | - |
244 | | - |
245 | | - |
246 | | - |
247 | typedef struct cauthctxt Authctxt; | - |
248 | typedef struct cauthmethod Authmethod; | - |
249 | typedef struct identity Identity; | - |
250 | typedef struct idlist Idlist; | - |
251 | | - |
252 | struct identity { | - |
253 | TAILQ_ENTRY(identity) next; | - |
254 | int agent_fd; | - |
255 | struct sshkey *key; | - |
256 | char *filename; | - |
257 | int tried; | - |
258 | int isprivate; | - |
259 | int userprovided; | - |
260 | }; | - |
261 | TAILQ_HEAD(idlist, identity); | - |
262 | | - |
263 | struct cauthctxt { | - |
264 | const char *server_user; | - |
265 | const char *local_user; | - |
266 | const char *host; | - |
267 | const char *service; | - |
268 | struct cauthmethod *method; | - |
269 | sig_atomic_t success; | - |
270 | char *authlist; | - |
271 | int attempt; | - |
272 | | - |
273 | struct idlist keys; | - |
274 | int agent_fd; | - |
275 | | - |
276 | Sensitive *sensitive; | - |
277 | char *oktypes, *ktypes; | - |
278 | const char *active_ktype; | - |
279 | | - |
280 | int info_req_seen; | - |
281 | | - |
282 | void *methoddata; | - |
283 | }; | - |
284 | | - |
285 | struct cauthmethod { | - |
286 | char *name; | - |
287 | int (*userauth)(Authctxt *authctxt); | - |
288 | void (*cleanup)(Authctxt *authctxt); | - |
289 | int *enabled; | - |
290 | int *batch_flag; | - |
291 | }; | - |
292 | | - |
293 | int input_userauth_service_accept(int, u_int32_t, struct ssh *); | - |
294 | int input_userauth_ext_info(int, u_int32_t, struct ssh *); | - |
295 | int input_userauth_success(int, u_int32_t, struct ssh *); | - |
296 | int input_userauth_success_unexpected(int, u_int32_t, struct ssh *); | - |
297 | int input_userauth_failure(int, u_int32_t, struct ssh *); | - |
298 | int input_userauth_banner(int, u_int32_t, struct ssh *); | - |
299 | int input_userauth_error(int, u_int32_t, struct ssh *); | - |
300 | int input_userauth_info_req(int, u_int32_t, struct ssh *); | - |
301 | int input_userauth_pk_ok(int, u_int32_t, struct ssh *); | - |
302 | int input_userauth_passwd_changereq(int, u_int32_t, struct ssh *); | - |
303 | | - |
304 | int userauth_none(Authctxt *); | - |
305 | int userauth_pubkey(Authctxt *); | - |
306 | int userauth_passwd(Authctxt *); | - |
307 | int userauth_kbdint(Authctxt *); | - |
308 | int userauth_hostbased(Authctxt *); | - |
309 | | - |
310 | #ifdef GSSAPI | - |
311 | int userauth_gssapi(Authctxt *authctxt); | - |
312 | int input_gssapi_response(int type, u_int32_t, struct ssh *); | - |
313 | int input_gssapi_token(int type, u_int32_t, struct ssh *); | - |
314 | int input_gssapi_hash(int type, u_int32_t, struct ssh *); | - |
315 | int input_gssapi_error(int, u_int32_t, struct ssh *); | - |
316 | int input_gssapi_errtok(int, u_int32_t, struct ssh *); | - |
317 | #endif | - |
318 | | - |
319 | void userauth(Authctxt *, char *); | - |
320 | | - |
321 | static int sign_and_send_pubkey(struct ssh *ssh, Authctxt *, Identity *); | - |
322 | static void pubkey_prepare(Authctxt *); | - |
323 | static void pubkey_cleanup(Authctxt *); | - |
324 | static void pubkey_reset(Authctxt *); | - |
325 | static struct sshkey *load_identity_file(Identity *); | - |
326 | | - |
327 | static Authmethod *authmethod_get(char *authlist); | - |
328 | static Authmethod *authmethod_lookup(const char *name); | - |
329 | static char *authmethods_get(void); | - |
330 | | - |
331 | Authmethod authmethods[] = { | - |
332 | #ifdef GSSAPI | - |
333 | {"gssapi-with-mic", | - |
334 | userauth_gssapi, | - |
335 | NULL, | - |
336 | &options.gss_authentication, | - |
337 | NULL}, | - |
338 | #endif | - |
339 | {"hostbased", | - |
340 | userauth_hostbased, | - |
341 | NULL, | - |
342 | &options.hostbased_authentication, | - |
343 | NULL}, | - |
344 | {"publickey", | - |
345 | userauth_pubkey, | - |
346 | NULL, | - |
347 | &options.pubkey_authentication, | - |
348 | NULL}, | - |
349 | {"keyboard-interactive", | - |
350 | userauth_kbdint, | - |
351 | NULL, | - |
352 | &options.kbd_interactive_authentication, | - |
353 | &options.batch_mode}, | - |
354 | {"password", | - |
355 | userauth_passwd, | - |
356 | NULL, | - |
357 | &options.password_authentication, | - |
358 | &options.batch_mode}, | - |
359 | {"none", | - |
360 | userauth_none, | - |
361 | NULL, | - |
362 | NULL, | - |
363 | NULL}, | - |
364 | {NULL, NULL, NULL, NULL, NULL} | - |
365 | }; | - |
366 | | - |
367 | void | - |
368 | ssh_userauth2(const char *local_user, const char *server_user, char *host, | - |
369 | Sensitive *sensitive) | - |
370 | { | - |
371 | struct ssh *ssh = active_state; | - |
372 | Authctxt authctxt; | - |
373 | int r; | - |
374 | | - |
375 | if (options.challenge_response_authentication)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
376 | options.kbd_interactive_authentication = 1; never executed: options.kbd_interactive_authentication = 1; | 0 |
377 | if (options.preferred_authentications == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
378 | options.preferred_authentications = authmethods_get(); never executed: options.preferred_authentications = authmethods_get(); | 0 |
379 | | - |
380 | | - |
381 | memset(&authctxt, 0, sizeof(authctxt)); | - |
382 | pubkey_prepare(&authctxt); | - |
383 | authctxt.server_user = server_user; | - |
384 | authctxt.local_user = local_user; | - |
385 | authctxt.host = host; | - |
386 | authctxt.service = "ssh-connection"; | - |
387 | authctxt.success = 0; | - |
388 | authctxt.method = authmethod_lookup("none"); | - |
389 | authctxt.authlist = NULL; | - |
390 | authctxt.methoddata = NULL; | - |
391 | authctxt.sensitive = sensitive; | - |
392 | authctxt.active_ktype = authctxt.oktypes = authctxt.ktypes = NULL; | - |
393 | authctxt.info_req_seen = 0; | - |
394 | authctxt.agent_fd = -1; | - |
395 | if (authctxt.method == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
396 | fatal("ssh_userauth2: internal error: cannot send userauth none request"); never executed: fatal("ssh_userauth2: internal error: cannot send userauth none request"); | 0 |
397 | | - |
398 | if ((r = sshpkt_start(ssh, SSH2_MSG_SERVICE_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
399 | (r = sshpkt_put_cstring(ssh, "ssh-userauth")) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
400 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
401 | fatal("%s: %s", __func__, ssh_err(r)); never executed: fatal("%s: %s", __func__, ssh_err(r)); | 0 |
402 | | - |
403 | ssh->authctxt = &authctxt; | - |
404 | ssh_dispatch_init(ssh, &input_userauth_error); | - |
405 | ssh_dispatch_set(ssh, SSH2_MSG_EXT_INFO, &input_userauth_ext_info); | - |
406 | ssh_dispatch_set(ssh, SSH2_MSG_SERVICE_ACCEPT, &input_userauth_service_accept); | - |
407 | ssh_dispatch_run_fatal(ssh, DISPATCH_BLOCK, &authctxt.success); | - |
408 | ssh->authctxt = NULL; | - |
409 | | - |
410 | pubkey_cleanup(&authctxt); | - |
411 | ssh_dispatch_range(ssh, SSH2_MSG_USERAUTH_MIN, SSH2_MSG_USERAUTH_MAX, NULL); | - |
412 | | - |
413 | if (!authctxt.success)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
414 | fatal("Authentication failed."); never executed: fatal("Authentication failed."); | 0 |
415 | debug("Authentication succeeded (%s).", authctxt.method->name); | - |
416 | } never executed: end of block | 0 |
417 | | - |
418 | | - |
419 | int | - |
420 | input_userauth_service_accept(int type, u_int32_t seq, struct ssh *ssh) | - |
421 | { | - |
422 | Authctxt *authctxt = ssh->authctxt; | - |
423 | int r; | - |
424 | | - |
425 | if (ssh_packet_remaining(ssh) > 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
426 | char *reply; | - |
427 | | - |
428 | if ((r = sshpkt_get_cstring(ssh, &reply, NULL)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
429 | goto out; never executed: goto out; | 0 |
430 | debug2("service_accept: %s", reply); | - |
431 | free(reply); | - |
432 | } else { never executed: end of block | 0 |
433 | debug2("buggy server: service_accept w/o service"); | - |
434 | } never executed: end of block | 0 |
435 | if ((r = sshpkt_get_end(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
436 | goto out; never executed: goto out; | 0 |
437 | debug("SSH2_MSG_SERVICE_ACCEPT received"); | - |
438 | | - |
439 | | - |
440 | userauth_none(authctxt); | - |
441 | | - |
442 | ssh_dispatch_set(ssh, SSH2_MSG_EXT_INFO, &input_userauth_error); | - |
443 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_SUCCESS, &input_userauth_success); | - |
444 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_FAILURE, &input_userauth_failure); | - |
445 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_BANNER, &input_userauth_banner); | - |
446 | r = 0; | - |
447 | out: code before this statement never executed: out: | 0 |
448 | return r; never executed: return r; | 0 |
449 | } | - |
450 | | - |
451 | | - |
452 | int | - |
453 | input_userauth_ext_info(int type, u_int32_t seqnr, struct ssh *ssh) | - |
454 | { | - |
455 | return kex_input_ext_info(type, seqnr, ssh); never executed: return kex_input_ext_info(type, seqnr, ssh); | 0 |
456 | } | - |
457 | | - |
458 | void | - |
459 | userauth(Authctxt *authctxt, char *authlist) | - |
460 | { | - |
461 | struct ssh *ssh = active_state; | - |
462 | | - |
463 | if (authctxt->method != NULL && authctxt->method->cleanup != NULL)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
464 | authctxt->method->cleanup(authctxt); never executed: authctxt->method->cleanup(authctxt); | 0 |
465 | | - |
466 | free(authctxt->methoddata); | - |
467 | authctxt->methoddata = NULL; | - |
468 | if (authlist == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
469 | authlist = authctxt->authlist; | - |
470 | } else { never executed: end of block | 0 |
471 | free(authctxt->authlist); | - |
472 | authctxt->authlist = authlist; | - |
473 | } never executed: end of block | 0 |
474 | for (;;) { | - |
475 | Authmethod *method = authmethod_get(authlist); | - |
476 | if (method == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
477 | fatal("%s@%s: Permission denied (%s).", never executed: fatal("%s@%s: Permission denied (%s).", authctxt->server_user, authctxt->host, authlist); | 0 |
478 | authctxt->server_user, authctxt->host, authlist); never executed: fatal("%s@%s: Permission denied (%s).", authctxt->server_user, authctxt->host, authlist); | 0 |
479 | authctxt->method = method; | - |
480 | | - |
481 | | - |
482 | ssh_dispatch_range(ssh, SSH2_MSG_USERAUTH_PER_METHOD_MIN, | - |
483 | SSH2_MSG_USERAUTH_PER_METHOD_MAX, NULL); | - |
484 | | - |
485 | | - |
486 | if (method->userauth(authctxt) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
487 | debug2("we sent a %s packet, wait for reply", method->name); | - |
488 | break; never executed: break; | 0 |
489 | } else { | - |
490 | debug2("we did not send a packet, disable method"); | - |
491 | method->enabled = NULL; | - |
492 | } never executed: end of block | 0 |
493 | } | - |
494 | } never executed: end of block | 0 |
495 | | - |
496 | | - |
497 | int | - |
498 | input_userauth_error(int type, u_int32_t seq, struct ssh *ssh) | - |
499 | { | - |
500 | fatal("input_userauth_error: bad message during authentication: " | - |
501 | "type %d", type); | - |
502 | return 0; never executed: return 0; | 0 |
503 | } | - |
504 | | - |
505 | | - |
506 | int | - |
507 | input_userauth_banner(int type, u_int32_t seq, struct ssh *ssh) | - |
508 | { | - |
509 | char *msg, *lang; | - |
510 | u_int len; | - |
511 | | - |
512 | debug3("%s", __func__); | - |
513 | msg = packet_get_string(&len); | - |
514 | lang = packet_get_string(NULL); | - |
515 | if (len > 0 && options.log_level >= SYSLOG_LEVEL_INFO)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
516 | fmprintf(stderr, "%s", msg); never executed: fmprintf( stderr , "%s", msg); | 0 |
517 | free(msg); | - |
518 | free(lang); | - |
519 | return 0; never executed: return 0; | 0 |
520 | } | - |
521 | | - |
522 | | - |
523 | int | - |
524 | input_userauth_success(int type, u_int32_t seq, struct ssh *ssh) | - |
525 | { | - |
526 | Authctxt *authctxt = ssh->authctxt; | - |
527 | | - |
528 | if (authctxt == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
529 | fatal("input_userauth_success: no authentication context"); never executed: fatal("input_userauth_success: no authentication context"); | 0 |
530 | free(authctxt->authlist); | - |
531 | authctxt->authlist = NULL; | - |
532 | if (authctxt->method != NULL && authctxt->method->cleanup != NULL)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
533 | authctxt->method->cleanup(authctxt); never executed: authctxt->method->cleanup(authctxt); | 0 |
534 | free(authctxt->methoddata); | - |
535 | authctxt->methoddata = NULL; | - |
536 | authctxt->success = 1; | - |
537 | return 0; never executed: return 0; | 0 |
538 | } | - |
539 | | - |
540 | int | - |
541 | input_userauth_success_unexpected(int type, u_int32_t seq, struct ssh *ssh) | - |
542 | { | - |
543 | Authctxt *authctxt = ssh->authctxt; | - |
544 | | - |
545 | if (authctxt == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
546 | fatal("%s: no authentication context", __func__); never executed: fatal("%s: no authentication context", __func__); | 0 |
547 | | - |
548 | fatal("Unexpected authentication success during %s.", | - |
549 | authctxt->method->name); | - |
550 | return 0; never executed: return 0; | 0 |
551 | } | - |
552 | | - |
553 | | - |
554 | int | - |
555 | input_userauth_failure(int type, u_int32_t seq, struct ssh *ssh) | - |
556 | { | - |
557 | Authctxt *authctxt = ssh->authctxt; | - |
558 | char *authlist = NULL; | - |
559 | u_char partial; | - |
560 | int r; | - |
561 | | - |
562 | if (authctxt == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
563 | fatal("input_userauth_failure: no authentication context"); never executed: fatal("input_userauth_failure: no authentication context"); | 0 |
564 | | - |
565 | if ((r = sshpkt_get_cstring(ssh, &authlist, NULL)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
566 | (r = sshpkt_get_u8(ssh, &partial)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
567 | (r = sshpkt_get_end(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
568 | goto out; never executed: goto out; | 0 |
569 | | - |
570 | if (partial != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
571 | verbose("Authenticated with partial success."); | - |
572 | | - |
573 | pubkey_reset(authctxt); | - |
574 | } never executed: end of block | 0 |
575 | debug("Authentications that can continue: %s", authlist); | - |
576 | | - |
577 | userauth(authctxt, authlist); | - |
578 | authlist = NULL; | - |
579 | out: code before this statement never executed: out: | 0 |
580 | free(authlist); | - |
581 | return 0; never executed: return 0; | 0 |
582 | } | - |
583 | | - |
584 | | - |
585 | | - |
586 | | - |
587 | | - |
588 | static char * | - |
589 | format_identity(Identity *id) | - |
590 | { | - |
591 | char *fp = NULL, *ret = NULL; | - |
592 | | - |
593 | if (id->key != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
594 | fp = sshkey_fingerprint(id->key, options.fingerprint_hash, | - |
595 | SSH_FP_DEFAULT); | - |
596 | } never executed: end of block | 0 |
597 | xasprintf(&ret, "%s %s%s%s%s%s%s", | - |
598 | id->filename, | - |
599 | id->key ? sshkey_type(id->key) : "", id->key ? " " : "", | - |
600 | fp ? fp : "", | - |
601 | id->userprovided ? " explicit" : "", | - |
602 | (id->key && (id->key->flags & SSHKEY_FLAG_EXT)) ? " token" : "", | - |
603 | id->agent_fd != -1 ? " agent" : ""); | - |
604 | free(fp); | - |
605 | return ret; never executed: return ret; | 0 |
606 | } | - |
607 | | - |
608 | | - |
609 | int | - |
610 | input_userauth_pk_ok(int type, u_int32_t seq, struct ssh *ssh) | - |
611 | { | - |
612 | Authctxt *authctxt = ssh->authctxt; | - |
613 | struct sshkey *key = NULL; | - |
614 | Identity *id = NULL; | - |
615 | int pktype, found = 0, sent = 0; | - |
616 | size_t blen; | - |
617 | char *pkalg = NULL, *fp = NULL, *ident = NULL; | - |
618 | u_char *pkblob = NULL; | - |
619 | int r; | - |
620 | | - |
621 | if (authctxt == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
622 | fatal("input_userauth_pk_ok: no authentication context"); never executed: fatal("input_userauth_pk_ok: no authentication context"); | 0 |
623 | | - |
624 | if ((r = sshpkt_get_cstring(ssh, &pkalg, NULL)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
625 | (r = sshpkt_get_string(ssh, &pkblob, &blen)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
626 | (r = sshpkt_get_end(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
627 | goto done; never executed: goto done; | 0 |
628 | | - |
629 | if ((pktype = sshkey_type_from_name(pkalg)) == KEY_UNSPEC) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
630 | debug("%s: server sent unknown pkalg %s", __func__, pkalg); | - |
631 | goto done; never executed: goto done; | 0 |
632 | } | - |
633 | if ((r = sshkey_from_blob(pkblob, blen, &key)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
634 | debug("no key from blob. pkalg %s: %s", pkalg, ssh_err(r)); | - |
635 | goto done; never executed: goto done; | 0 |
636 | } | - |
637 | if (key->type != pktype) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
638 | error("input_userauth_pk_ok: type mismatch " | - |
639 | "for decoded key (received %d, expected %d)", | - |
640 | key->type, pktype); | - |
641 | goto done; never executed: goto done; | 0 |
642 | } | - |
643 | | - |
644 | | - |
645 | | - |
646 | | - |
647 | | - |
648 | | - |
649 | TAILQ_FOREACH_REVERSE(id, &authctxt->keys, idlist, next) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
650 | if (sshkey_equal(key, id->key)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
651 | found = 1; | - |
652 | break; never executed: break; | 0 |
653 | } | - |
654 | } never executed: end of block | 0 |
655 | if (!found || id == NULL) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
656 | fp = sshkey_fingerprint(key, options.fingerprint_hash, | - |
657 | SSH_FP_DEFAULT); | - |
658 | error("%s: server replied with unknown key: %s %s", __func__, | - |
659 | sshkey_type(key), fp == NULL ? "<ERROR>" : fp); | - |
660 | goto done; never executed: goto done; | 0 |
661 | } | - |
662 | ident = format_identity(id); | - |
663 | debug("Server accepts key: %s", ident); | - |
664 | sent = sign_and_send_pubkey(ssh, authctxt, id); | - |
665 | r = 0; | - |
666 | done: code before this statement never executed: done: | 0 |
667 | sshkey_free(key); | - |
668 | free(ident); | - |
669 | free(fp); | - |
670 | free(pkalg); | - |
671 | free(pkblob); | - |
672 | | - |
673 | | - |
674 | if (r == 0 && sent == 0)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
675 | userauth(authctxt, NULL); never executed: userauth(authctxt, ((void *)0) ); | 0 |
676 | return r; never executed: return r; | 0 |
677 | } | - |
678 | | - |
679 | #ifdef GSSAPI | - |
680 | int | - |
681 | userauth_gssapi(Authctxt *authctxt) | - |
682 | { | - |
683 | struct ssh *ssh = active_state; | - |
684 | Gssctxt *gssctxt = NULL; | - |
685 | static gss_OID_set gss_supported = NULL; | - |
686 | static u_int mech = 0; | - |
687 | OM_uint32 min; | - |
688 | int r, ok = 0; | - |
689 | | - |
690 | | - |
691 | | - |
692 | | - |
693 | if (gss_supported == NULL) | - |
694 | gss_indicate_mechs(&min, &gss_supported); | - |
695 | | - |
696 | | - |
697 | while (mech < gss_supported->count && !ok) { | - |
698 | | - |
699 | if (gss_supported->elements[mech].length < 128 && | - |
700 | ssh_gssapi_check_mechanism(&gssctxt, | - |
701 | &gss_supported->elements[mech], authctxt->host)) { | - |
702 | ok = 1; | - |
703 | } else { | - |
704 | mech++; | - |
705 | } | - |
706 | } | - |
707 | | - |
708 | if (!ok) | - |
709 | return 0; | - |
710 | | - |
711 | authctxt->methoddata=(void *)gssctxt; | - |
712 | | - |
713 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 || | - |
714 | (r = sshpkt_put_cstring(ssh, authctxt->server_user)) != 0 || | - |
715 | (r = sshpkt_put_cstring(ssh, authctxt->service)) != 0 || | - |
716 | (r = sshpkt_put_cstring(ssh, authctxt->method->name)) != 0 || | - |
717 | (r = sshpkt_put_u32(ssh, 1)) != 0 || | - |
718 | (r = sshpkt_put_u32(ssh, | - |
719 | (gss_supported->elements[mech].length) + 2)) != 0 || | - |
720 | (r = sshpkt_put_u8(ssh, SSH_GSS_OIDTYPE)) != 0 || | - |
721 | (r = sshpkt_put_u8(ssh, | - |
722 | gss_supported->elements[mech].length)) != 0 || | - |
723 | (r = sshpkt_put(ssh, | - |
724 | gss_supported->elements[mech].elements, | - |
725 | gss_supported->elements[mech].length)) != 0 || | - |
726 | (r = sshpkt_send(ssh)) != 0) | - |
727 | fatal("%s: %s", __func__, ssh_err(r)); | - |
728 | | - |
729 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_GSSAPI_RESPONSE, &input_gssapi_response); | - |
730 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_GSSAPI_TOKEN, &input_gssapi_token); | - |
731 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_GSSAPI_ERROR, &input_gssapi_error); | - |
732 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_GSSAPI_ERRTOK, &input_gssapi_errtok); | - |
733 | | - |
734 | mech++; | - |
735 | | - |
736 | return 1; | - |
737 | } | - |
738 | | - |
739 | static OM_uint32 | - |
740 | process_gssapi_token(struct ssh *ssh, gss_buffer_t recv_tok) | - |
741 | { | - |
742 | Authctxt *authctxt = ssh->authctxt; | - |
743 | Gssctxt *gssctxt = authctxt->methoddata; | - |
744 | gss_buffer_desc send_tok = GSS_C_EMPTY_BUFFER; | - |
745 | gss_buffer_desc mic = GSS_C_EMPTY_BUFFER; | - |
746 | gss_buffer_desc gssbuf; | - |
747 | OM_uint32 status, ms, flags; | - |
748 | int r; | - |
749 | | - |
750 | status = ssh_gssapi_init_ctx(gssctxt, options.gss_deleg_creds, | - |
751 | recv_tok, &send_tok, &flags); | - |
752 | | - |
753 | if (send_tok.length > 0) { | - |
754 | u_char type = GSS_ERROR(status) ? | - |
755 | SSH2_MSG_USERAUTH_GSSAPI_ERRTOK : | - |
756 | SSH2_MSG_USERAUTH_GSSAPI_TOKEN; | - |
757 | | - |
758 | if ((r = sshpkt_start(ssh, type)) != 0 || | - |
759 | (r = sshpkt_put_string(ssh, send_tok.value, | - |
760 | send_tok.length)) != 0 || | - |
761 | (r = sshpkt_send(ssh)) != 0) | - |
762 | fatal("%s: %s", __func__, ssh_err(r)); | - |
763 | | - |
764 | gss_release_buffer(&ms, &send_tok); | - |
765 | } | - |
766 | | - |
767 | if (status == GSS_S_COMPLETE) { | - |
768 | | - |
769 | if (!(flags & GSS_C_INTEG_FLAG)) { | - |
770 | if ((r = sshpkt_start(ssh, | - |
771 | SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE)) != 0 || | - |
772 | (r = sshpkt_send(ssh)) != 0) | - |
773 | fatal("%s: %s", __func__, ssh_err(r)); | - |
774 | } else { | - |
775 | struct sshbuf *b; | - |
776 | | - |
777 | if ((b = sshbuf_new()) == NULL) | - |
778 | fatal("%s: sshbuf_new failed", __func__); | - |
779 | ssh_gssapi_buildmic(b, authctxt->server_user, | - |
780 | authctxt->service, "gssapi-with-mic"); | - |
781 | | - |
782 | if ((gssbuf.value = sshbuf_mutable_ptr(b)) == NULL) | - |
783 | fatal("%s: sshbuf_mutable_ptr failed", __func__); | - |
784 | gssbuf.length = sshbuf_len(b); | - |
785 | | - |
786 | status = ssh_gssapi_sign(gssctxt, &gssbuf, &mic); | - |
787 | | - |
788 | if (!GSS_ERROR(status)) { | - |
789 | if ((r = sshpkt_start(ssh, | - |
790 | SSH2_MSG_USERAUTH_GSSAPI_MIC)) != 0 || | - |
791 | (r = sshpkt_put_string(ssh, mic.value, | - |
792 | mic.length)) != 0 || | - |
793 | (r = sshpkt_send(ssh)) != 0) | - |
794 | fatal("%s: %s", __func__, ssh_err(r)); | - |
795 | } | - |
796 | | - |
797 | sshbuf_free(b); | - |
798 | gss_release_buffer(&ms, &mic); | - |
799 | } | - |
800 | } | - |
801 | | - |
802 | return status; | - |
803 | } | - |
804 | | - |
805 | | - |
806 | int | - |
807 | input_gssapi_response(int type, u_int32_t plen, struct ssh *ssh) | - |
808 | { | - |
809 | Authctxt *authctxt = ssh->authctxt; | - |
810 | Gssctxt *gssctxt; | - |
811 | size_t oidlen; | - |
812 | u_char *oidv = NULL; | - |
813 | int r; | - |
814 | | - |
815 | if (authctxt == NULL) | - |
816 | fatal("input_gssapi_response: no authentication context"); | - |
817 | gssctxt = authctxt->methoddata; | - |
818 | | - |
819 | | - |
820 | if ((r = sshpkt_get_string(ssh, &oidv, &oidlen)) != 0) | - |
821 | goto done; | - |
822 | | - |
823 | if (oidlen <= 2 || | - |
824 | oidv[0] != SSH_GSS_OIDTYPE || | - |
825 | oidv[1] != oidlen - 2) { | - |
826 | debug("Badly encoded mechanism OID received"); | - |
827 | userauth(authctxt, NULL); | - |
828 | goto ok; | - |
829 | } | - |
830 | | - |
831 | if (!ssh_gssapi_check_oid(gssctxt, oidv + 2, oidlen - 2)) | - |
832 | fatal("Server returned different OID than expected"); | - |
833 | | - |
834 | if ((r = sshpkt_get_end(ssh)) != 0) | - |
835 | goto done; | - |
836 | | - |
837 | if (GSS_ERROR(process_gssapi_token(ssh, GSS_C_NO_BUFFER))) { | - |
838 | | - |
839 | debug("Trying to start again"); | - |
840 | userauth(authctxt, NULL); | - |
841 | goto ok; | - |
842 | } | - |
843 | ok: | - |
844 | r = 0; | - |
845 | done: | - |
846 | free(oidv); | - |
847 | return r; | - |
848 | } | - |
849 | | - |
850 | | - |
851 | int | - |
852 | input_gssapi_token(int type, u_int32_t plen, struct ssh *ssh) | - |
853 | { | - |
854 | Authctxt *authctxt = ssh->authctxt; | - |
855 | gss_buffer_desc recv_tok; | - |
856 | u_char *p = NULL; | - |
857 | size_t len; | - |
858 | OM_uint32 status; | - |
859 | int r; | - |
860 | | - |
861 | if (authctxt == NULL) | - |
862 | fatal("input_gssapi_response: no authentication context"); | - |
863 | | - |
864 | if ((r = sshpkt_get_string(ssh, &p, &len)) != 0 || | - |
865 | (r = sshpkt_get_end(ssh)) != 0) | - |
866 | goto out; | - |
867 | | - |
868 | recv_tok.value = p; | - |
869 | recv_tok.length = len; | - |
870 | status = process_gssapi_token(ssh, &recv_tok); | - |
871 | | - |
872 | | - |
873 | if (GSS_ERROR(status)) { | - |
874 | userauth(authctxt, NULL); | - |
875 | | - |
876 | } | - |
877 | r = 0; | - |
878 | out: | - |
879 | free(p); | - |
880 | return r; | - |
881 | } | - |
882 | | - |
883 | | - |
884 | int | - |
885 | input_gssapi_errtok(int type, u_int32_t plen, struct ssh *ssh) | - |
886 | { | - |
887 | Authctxt *authctxt = ssh->authctxt; | - |
888 | Gssctxt *gssctxt; | - |
889 | gss_buffer_desc send_tok = GSS_C_EMPTY_BUFFER; | - |
890 | gss_buffer_desc recv_tok; | - |
891 | OM_uint32 ms; | - |
892 | u_char *p = NULL; | - |
893 | size_t len; | - |
894 | int r; | - |
895 | | - |
896 | if (authctxt == NULL) | - |
897 | fatal("input_gssapi_response: no authentication context"); | - |
898 | gssctxt = authctxt->methoddata; | - |
899 | | - |
900 | if ((r = sshpkt_get_string(ssh, &p, &len)) != 0 || | - |
901 | (r = sshpkt_get_end(ssh)) != 0) { | - |
902 | free(p); | - |
903 | return r; | - |
904 | } | - |
905 | | - |
906 | | - |
907 | recv_tok.value = p; | - |
908 | recv_tok.length = len; | - |
909 | (void)ssh_gssapi_init_ctx(gssctxt, options.gss_deleg_creds, | - |
910 | &recv_tok, &send_tok, NULL); | - |
911 | free(p); | - |
912 | gss_release_buffer(&ms, &send_tok); | - |
913 | | - |
914 | | - |
915 | return 0; | - |
916 | } | - |
917 | | - |
918 | | - |
919 | int | - |
920 | input_gssapi_error(int type, u_int32_t plen, struct ssh *ssh) | - |
921 | { | - |
922 | char *msg = NULL; | - |
923 | char *lang = NULL; | - |
924 | int r; | - |
925 | | - |
926 | if ((r = sshpkt_get_u32(ssh, NULL)) != 0 || | - |
927 | (r = sshpkt_get_u32(ssh, NULL)) != 0 || | - |
928 | (r = sshpkt_get_cstring(ssh, &msg, NULL)) != 0 || | - |
929 | (r = sshpkt_get_cstring(ssh, &lang, NULL)) != 0) | - |
930 | goto out; | - |
931 | r = sshpkt_get_end(ssh); | - |
932 | debug("Server GSSAPI Error:\n%s", msg); | - |
933 | out: | - |
934 | free(msg); | - |
935 | free(lang); | - |
936 | return r; | - |
937 | } | - |
938 | #endif /* GSSAPI */ | - |
939 | | - |
940 | int | - |
941 | userauth_none(Authctxt *authctxt) | - |
942 | { | - |
943 | struct ssh *ssh = active_state; | - |
944 | int r; | - |
945 | | - |
946 | | - |
947 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
948 | (r = sshpkt_put_cstring(ssh, authctxt->server_user)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
949 | (r = sshpkt_put_cstring(ssh, authctxt->service)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
950 | (r = sshpkt_put_cstring(ssh, authctxt->method->name)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
951 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
952 | fatal("%s: %s", __func__, ssh_err(r)); never executed: fatal("%s: %s", __func__, ssh_err(r)); | 0 |
953 | return 1; never executed: return 1; | 0 |
954 | } | - |
955 | | - |
956 | int | - |
957 | userauth_passwd(Authctxt *authctxt) | - |
958 | { | - |
959 | struct ssh *ssh = active_state; | - |
960 | static int attempt = 0; | - |
961 | char prompt[256]; | - |
962 | char *password; | - |
963 | const char *host = options.host_key_alias ? options.host_key_alias :TRUE | never evaluated | FALSE | never evaluated |
| 0 |
964 | authctxt->host; | - |
965 | int r; | - |
966 | | - |
967 | if (attempt++ >= options.number_of_password_prompts)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
968 | return 0; never executed: return 0; | 0 |
969 | | - |
970 | if (attempt != 1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
971 | error("Permission denied, please try again."); never executed: error("Permission denied, please try again."); | 0 |
972 | | - |
973 | snprintf(prompt, sizeof(prompt), "%.30s@%.128s's password: ", | - |
974 | authctxt->server_user, host); | - |
975 | password = read_passphrase(prompt, 0); | - |
976 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
977 | (r = sshpkt_put_cstring(ssh, authctxt->server_user)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
978 | (r = sshpkt_put_cstring(ssh, authctxt->service)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
979 | (r = sshpkt_put_cstring(ssh, authctxt->method->name)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
980 | (r = sshpkt_put_u8(ssh, 0)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
981 | (r = sshpkt_put_cstring(ssh, password)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
982 | (r = sshpkt_add_padding(ssh, 64)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
983 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
984 | fatal("%s: %s", __func__, ssh_err(r)); never executed: fatal("%s: %s", __func__, ssh_err(r)); | 0 |
985 | | - |
986 | if (password)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
987 | freezero(password, strlen(password)); never executed: freezero(password, strlen(password)); | 0 |
988 | | - |
989 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ, | - |
990 | &input_userauth_passwd_changereq); | - |
991 | | - |
992 | return 1; never executed: return 1; | 0 |
993 | } | - |
994 | | - |
995 | | - |
996 | | - |
997 | | - |
998 | | - |
999 | int | - |
1000 | input_userauth_passwd_changereq(int type, u_int32_t seqnr, struct ssh *ssh) | - |
1001 | { | - |
1002 | Authctxt *authctxt = ssh->authctxt; | - |
1003 | char *info = NULL, *lang = NULL, *password = NULL, *retype = NULL; | - |
1004 | char prompt[256]; | - |
1005 | const char *host; | - |
1006 | int r; | - |
1007 | | - |
1008 | debug2("input_userauth_passwd_changereq"); | - |
1009 | | - |
1010 | if (authctxt == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1011 | fatal("input_userauth_passwd_changereq: " never executed: fatal("input_userauth_passwd_changereq: " "no authentication context"); | 0 |
1012 | "no authentication context"); never executed: fatal("input_userauth_passwd_changereq: " "no authentication context"); | 0 |
1013 | host = options.host_key_alias ? options.host_key_alias : authctxt->host;TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1014 | | - |
1015 | if ((r = sshpkt_get_cstring(ssh, &info, NULL)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1016 | (r = sshpkt_get_cstring(ssh, &lang, NULL)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1017 | goto out; never executed: goto out; | 0 |
1018 | if (strlen(info) > 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1019 | logit("%s", info); never executed: logit("%s", info); | 0 |
1020 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1021 | (r = sshpkt_put_cstring(ssh, authctxt->server_user)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1022 | (r = sshpkt_put_cstring(ssh, authctxt->service)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1023 | (r = sshpkt_put_cstring(ssh, authctxt->method->name)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1024 | (r = sshpkt_put_u8(ssh, 1)) != 0) TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1025 | goto out; never executed: goto out; | 0 |
1026 | | - |
1027 | snprintf(prompt, sizeof(prompt), | - |
1028 | "Enter %.30s@%.128s's old password: ", | - |
1029 | authctxt->server_user, host); | - |
1030 | password = read_passphrase(prompt, 0); | - |
1031 | if ((r = sshpkt_put_cstring(ssh, password)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1032 | goto out; never executed: goto out; | 0 |
1033 | | - |
1034 | freezero(password, strlen(password)); | - |
1035 | password = NULL; | - |
1036 | while (password == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1037 | snprintf(prompt, sizeof(prompt), | - |
1038 | "Enter %.30s@%.128s's new password: ", | - |
1039 | authctxt->server_user, host); | - |
1040 | password = read_passphrase(prompt, RP_ALLOW_EOF); | - |
1041 | if (password == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1042 | | - |
1043 | r = 0; | - |
1044 | goto out; never executed: goto out; | 0 |
1045 | } | - |
1046 | snprintf(prompt, sizeof(prompt), | - |
1047 | "Retype %.30s@%.128s's new password: ", | - |
1048 | authctxt->server_user, host); | - |
1049 | retype = read_passphrase(prompt, 0); | - |
1050 | if (strcmp(password, retype) != 0) { never executed: __result = (((const unsigned char *) (const char *) ( password ))[3] - __s2[3]); never executed: end of block never executed: end of block never executed: __result = (((const unsigned char *) (const char *) ( retype ))[3] - __s2[3]); never executed: end of block never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1051 | freezero(password, strlen(password)); | - |
1052 | logit("Mismatch; try again, EOF to quit."); | - |
1053 | password = NULL; | - |
1054 | } never executed: end of block | 0 |
1055 | freezero(retype, strlen(retype)); | - |
1056 | } never executed: end of block | 0 |
1057 | if ((r = sshpkt_put_cstring(ssh, password)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1058 | (r = sshpkt_add_padding(ssh, 64)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1059 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1060 | goto out; never executed: goto out; | 0 |
1061 | | - |
1062 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_PASSWD_CHANGEREQ, | - |
1063 | &input_userauth_passwd_changereq); | - |
1064 | r = 0; | - |
1065 | out: code before this statement never executed: out: | 0 |
1066 | if (password)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1067 | freezero(password, strlen(password)); never executed: freezero(password, strlen(password)); | 0 |
1068 | free(info); | - |
1069 | free(lang); | - |
1070 | return r; never executed: return r; | 0 |
1071 | } | - |
1072 | | - |
1073 | | - |
1074 | | - |
1075 | | - |
1076 | | - |
1077 | | - |
1078 | | - |
1079 | | - |
1080 | static char * | - |
1081 | key_sig_algorithm(struct ssh *ssh, const struct sshkey *key) | - |
1082 | { | - |
1083 | char *allowed, *oallowed, *cp, *tmp, *alg = NULL; | - |
1084 | | - |
1085 | | - |
1086 | | - |
1087 | | - |
1088 | | - |
1089 | | - |
1090 | if (ssh == NULL || ssh->kex->server_sig_algs == NULL ||TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1091 | (key->type != KEY_RSA && key->type != KEY_RSA_CERT)) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1092 | | - |
1093 | return match_list(sshkey_ssh_name(key), never executed: return match_list(sshkey_ssh_name(key), options.pubkey_key_types, ((void *)0) ); | 0 |
1094 | options.pubkey_key_types, NULL); never executed: return match_list(sshkey_ssh_name(key), options.pubkey_key_types, ((void *)0) ); | 0 |
1095 | } | - |
1096 | | - |
1097 | | - |
1098 | | - |
1099 | | - |
1100 | | - |
1101 | | - |
1102 | | - |
1103 | oallowed = allowed = xstrdup(options.pubkey_key_types); | - |
1104 | while ((cp = strsep(&allowed, ",")) != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1105 | if (sshkey_type_from_name(cp) != key->type)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1106 | continue; never executed: continue; | 0 |
1107 | tmp = match_list(sshkey_sigalg_by_name(cp), ssh->kex->server_sig_algs, NULL); | - |
1108 | if (tmp != NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1109 | alg = xstrdup(cp); never executed: alg = xstrdup(cp); | 0 |
1110 | free(tmp); | - |
1111 | if (alg != NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1112 | break; never executed: break; | 0 |
1113 | } never executed: end of block | 0 |
1114 | free(oallowed); | - |
1115 | return alg; never executed: return alg; | 0 |
1116 | } | - |
1117 | | - |
1118 | static int | - |
1119 | identity_sign(struct identity *id, u_char **sigp, size_t *lenp, | - |
1120 | const u_char *data, size_t datalen, u_int compat, const char *alg) | - |
1121 | { | - |
1122 | struct sshkey *prv; | - |
1123 | int r; | - |
1124 | | - |
1125 | | - |
1126 | if (id->key != NULL && id->agent_fd != -1) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1127 | return ssh_agent_sign(id->agent_fd, id->key, sigp, lenp, never executed: return ssh_agent_sign(id->agent_fd, id->key, sigp, lenp, data, datalen, alg, compat); | 0 |
1128 | data, datalen, alg, compat); never executed: return ssh_agent_sign(id->agent_fd, id->key, sigp, lenp, data, datalen, alg, compat); | 0 |
1129 | } | - |
1130 | | - |
1131 | | - |
1132 | | - |
1133 | | - |
1134 | | - |
1135 | if (id->key != NULL &&TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1136 | (id->isprivate || (id->key->flags & SSHKEY_FLAG_EXT))) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1137 | if ((r = sshkey_sign(id->key, sigp, lenp, data, datalen,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1138 | alg, compat)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1139 | return r; never executed: return r; | 0 |
1140 | | - |
1141 | | - |
1142 | | - |
1143 | | - |
1144 | if ((r = sshkey_check_sigtype(*sigp, *lenp, alg)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1145 | return r; never executed: return r; | 0 |
1146 | return 0; never executed: return 0; | 0 |
1147 | } | - |
1148 | | - |
1149 | | - |
1150 | if ((prv = load_identity_file(id)) == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1151 | return SSH_ERR_KEY_NOT_FOUND; never executed: return -46; | 0 |
1152 | if (id->key != NULL && !sshkey_equal_public(prv, id->key)) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1153 | error("%s: private key %s contents do not match public", | - |
1154 | __func__, id->filename); | - |
1155 | return SSH_ERR_KEY_NOT_FOUND; never executed: return -46; | 0 |
1156 | } | - |
1157 | r = sshkey_sign(prv, sigp, lenp, data, datalen, alg, compat); | - |
1158 | sshkey_free(prv); | - |
1159 | return r; never executed: return r; | 0 |
1160 | } | - |
1161 | | - |
1162 | static int | - |
1163 | id_filename_matches(Identity *id, Identity *private_id) | - |
1164 | { | - |
1165 | const char *suffixes[] = { ".pub", "-cert.pub", NULL }; | - |
1166 | size_t len = strlen(id->filename), plen = strlen(private_id->filename); | - |
1167 | size_t i, slen; | - |
1168 | | - |
1169 | if (strcmp(id->filename, private_id->filename) == 0) never executed: __result = (((const unsigned char *) (const char *) ( id->filename ))[3] - __s2[3]); never executed: end of block never executed: end of block never executed: __result = (((const unsigned char *) (const char *) ( private_id->filename ))[3] - __s2[3]); never executed: end of block never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1170 | return 1; never executed: return 1; | 0 |
1171 | for (i = 0; suffixes[i]; i++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1172 | slen = strlen(suffixes[i]); | - |
1173 | if (len > slen && plen == len - slen &&TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1174 | strcmp(id->filename + (len - slen), suffixes[i]) == 0 && never executed: __result = (((const unsigned char *) (const char *) ( id->filename + (len - slen) ))[3] - __s2[3]); never executed: end of block never executed: end of block never executed: __result = (((const unsigned char *) (const char *) ( suffixes[i] ))[3] - __s2[3]); never executed: end of block never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1175 | memcmp(id->filename, private_id->filename, plen) == 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1176 | return 1; never executed: return 1; | 0 |
1177 | } never executed: end of block | 0 |
1178 | return 0; never executed: return 0; | 0 |
1179 | } | - |
1180 | | - |
1181 | static int | - |
1182 | sign_and_send_pubkey(struct ssh *ssh, Authctxt *authctxt, Identity *id) | - |
1183 | { | - |
1184 | struct sshbuf *b = NULL; | - |
1185 | Identity *private_id, *sign_id = NULL; | - |
1186 | u_char *signature = NULL; | - |
1187 | size_t slen = 0, skip = 0; | - |
1188 | int r, fallback_sigtype, sent = 0; | - |
1189 | char *alg = NULL, *fp = NULL; | - |
1190 | const char *loc = ""; | - |
1191 | | - |
1192 | if ((fp = sshkey_fingerprint(id->key, options.fingerprint_hash,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1193 | SSH_FP_DEFAULT)) == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1194 | return 0; never executed: return 0; | 0 |
1195 | | - |
1196 | debug3("%s: %s %s", __func__, sshkey_type(id->key), fp); | - |
1197 | | - |
1198 | | - |
1199 | | - |
1200 | | - |
1201 | | - |
1202 | | - |
1203 | | - |
1204 | | - |
1205 | | - |
1206 | if (sshkey_is_cert(id->key)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1207 | TAILQ_FOREACH(private_id, &authctxt->keys, next) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1208 | if (sshkey_equal_public(id->key, private_id->key) &&TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1209 | id->key->type != private_id->key->type) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1210 | sign_id = private_id; | - |
1211 | break; never executed: break; | 0 |
1212 | } | - |
1213 | } never executed: end of block | 0 |
1214 | | - |
1215 | | - |
1216 | | - |
1217 | | - |
1218 | | - |
1219 | | - |
1220 | | - |
1221 | if (sign_id == NULL &&TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1222 | !id->isprivate && id->agent_fd == -1 &&TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1223 | (id->key->flags & SSHKEY_FLAG_EXT) == 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1224 | TAILQ_FOREACH(private_id, &authctxt->keys, next) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1225 | if (private_id->key == NULL &&TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1226 | id_filename_matches(id, private_id)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1227 | sign_id = private_id; | - |
1228 | break; never executed: break; | 0 |
1229 | } | - |
1230 | } never executed: end of block | 0 |
1231 | } never executed: end of block | 0 |
1232 | if (sign_id != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1233 | debug2("%s: using private key \"%s\"%s for " | - |
1234 | "certificate", __func__, id->filename, | - |
1235 | id->agent_fd != -1 ? " from agent" : ""); | - |
1236 | } else { never executed: end of block | 0 |
1237 | debug("%s: no separate private key for certificate " | - |
1238 | "\"%s\"", __func__, id->filename); | - |
1239 | } never executed: end of block | 0 |
1240 | } | - |
1241 | | - |
1242 | | - |
1243 | | - |
1244 | | - |
1245 | | - |
1246 | if (sign_id == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1247 | sign_id = id; never executed: sign_id = id; | 0 |
1248 | | - |
1249 | | - |
1250 | for (fallback_sigtype = 0; fallback_sigtype <= 1; fallback_sigtype++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1251 | free(alg); | - |
1252 | slen = 0; | - |
1253 | signature = NULL; | - |
1254 | if ((alg = key_sig_algorithm(fallback_sigtype ? NULL : ssh,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1255 | id->key)) == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1256 | error("%s: no mutual signature supported", __func__); | - |
1257 | goto out; never executed: goto out; | 0 |
1258 | } | - |
1259 | debug3("%s: signing using %s", __func__, alg); | - |
1260 | | - |
1261 | sshbuf_free(b); | - |
1262 | if ((b = sshbuf_new()) == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1263 | fatal("%s: sshbuf_new failed", __func__); never executed: fatal("%s: sshbuf_new failed", __func__); | 0 |
1264 | if (datafellows & SSH_OLD_SESSIONID) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1265 | if ((r = sshbuf_put(b, session_id2,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1266 | session_id2_len)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1267 | fatal("%s: sshbuf_put: %s", | - |
1268 | __func__, ssh_err(r)); | - |
1269 | } never executed: end of block | 0 |
1270 | } else { never executed: end of block | 0 |
1271 | if ((r = sshbuf_put_string(b, session_id2,TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1272 | session_id2_len)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1273 | fatal("%s: sshbuf_put_string: %s", | - |
1274 | __func__, ssh_err(r)); | - |
1275 | } never executed: end of block | 0 |
1276 | } never executed: end of block | 0 |
1277 | skip = sshbuf_len(b); | - |
1278 | if ((r = sshbuf_put_u8(b, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1279 | (r = sshbuf_put_cstring(b, authctxt->server_user)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1280 | (r = sshbuf_put_cstring(b, authctxt->service)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1281 | (r = sshbuf_put_cstring(b, authctxt->method->name)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1282 | (r = sshbuf_put_u8(b, 1)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1283 | (r = sshbuf_put_cstring(b, alg)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1284 | (r = sshkey_puts(id->key, b)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1285 | fatal("%s: assemble signed data: %s", | - |
1286 | __func__, ssh_err(r)); | - |
1287 | } never executed: end of block | 0 |
1288 | | - |
1289 | | - |
1290 | r = identity_sign(sign_id, &signature, &slen, | - |
1291 | sshbuf_ptr(b), sshbuf_len(b), datafellows, alg); | - |
1292 | if (r == 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1293 | break; never executed: break; | 0 |
1294 | else if (r == SSH_ERR_KEY_NOT_FOUND)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1295 | goto out; never executed: goto out; | 0 |
1296 | else if (r == SSH_ERR_SIGN_ALG_UNSUPPORTED &&TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1297 | !fallback_sigtype) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1298 | if (sign_id->agent_fd != -1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1299 | loc = "agent "; never executed: loc = "agent "; | 0 |
1300 | else if ((sign_id->key->flags & SSHKEY_FLAG_EXT) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1301 | loc = "token "; never executed: loc = "token "; | 0 |
1302 | logit("%skey %s %s returned incorrect signature type", | - |
1303 | loc, sshkey_type(id->key), fp); | - |
1304 | continue; never executed: continue; | 0 |
1305 | } | - |
1306 | error("%s: signing failed: %s", __func__, ssh_err(r)); | - |
1307 | goto out; never executed: goto out; | 0 |
1308 | } | - |
1309 | if (slen == 0 || signature == NULL) TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1310 | fatal("%s: no signature", __func__); never executed: fatal("%s: no signature", __func__); | 0 |
1311 | | - |
1312 | | - |
1313 | if ((r = sshbuf_put_string(b, signature, slen)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1314 | fatal("%s: append signature: %s", __func__, ssh_err(r)); never executed: fatal("%s: append signature: %s", __func__, ssh_err(r)); | 0 |
1315 | | - |
1316 | #ifdef DEBUG_PK | - |
1317 | sshbuf_dump(b, stderr); | - |
1318 | #endif | - |
1319 | | - |
1320 | if ((r = sshbuf_consume(b, skip + 1)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1321 | fatal("%s: consume: %s", __func__, ssh_err(r)); never executed: fatal("%s: consume: %s", __func__, ssh_err(r)); | 0 |
1322 | | - |
1323 | | - |
1324 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1325 | (r = sshpkt_putb(ssh, b)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1326 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1327 | fatal("%s: enqueue request: %s", __func__, ssh_err(r)); never executed: fatal("%s: enqueue request: %s", __func__, ssh_err(r)); | 0 |
1328 | | - |
1329 | | - |
1330 | sent = 1; | - |
1331 | | - |
1332 | out: code before this statement never executed: out: | 0 |
1333 | free(fp); | - |
1334 | free(alg); | - |
1335 | sshbuf_free(b); | - |
1336 | freezero(signature, slen); | - |
1337 | return sent; never executed: return sent; | 0 |
1338 | } | - |
1339 | | - |
1340 | static int | - |
1341 | send_pubkey_test(struct ssh *ssh, Authctxt *authctxt, Identity *id) | - |
1342 | { | - |
1343 | u_char *blob = NULL; | - |
1344 | char *alg = NULL; | - |
1345 | size_t bloblen; | - |
1346 | u_int have_sig = 0; | - |
1347 | int sent = 0, r; | - |
1348 | | - |
1349 | if ((alg = key_sig_algorithm(ssh, id->key)) == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1350 | debug("%s: no mutual signature algorithm", __func__); | - |
1351 | goto out; never executed: goto out; | 0 |
1352 | } | - |
1353 | | - |
1354 | if ((r = sshkey_to_blob(id->key, &blob, &bloblen)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1355 | | - |
1356 | debug3("%s: cannot handle key", __func__); | - |
1357 | goto out; never executed: goto out; | 0 |
1358 | } | - |
1359 | | - |
1360 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_PK_OK, &input_userauth_pk_ok); | - |
1361 | | - |
1362 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1363 | (r = sshpkt_put_cstring(ssh, authctxt->server_user)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1364 | (r = sshpkt_put_cstring(ssh, authctxt->service)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1365 | (r = sshpkt_put_cstring(ssh, authctxt->method->name)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1366 | (r = sshpkt_put_u8(ssh, have_sig)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1367 | (r = sshpkt_put_cstring(ssh, alg)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1368 | (r = sshpkt_put_string(ssh, blob, bloblen)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1369 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1370 | fatal("%s: %s", __func__, ssh_err(r)); never executed: fatal("%s: %s", __func__, ssh_err(r)); | 0 |
1371 | sent = 1; | - |
1372 | | - |
1373 | out: code before this statement never executed: out: | 0 |
1374 | free(alg); | - |
1375 | free(blob); | - |
1376 | return sent; never executed: return sent; | 0 |
1377 | } | - |
1378 | | - |
1379 | static struct sshkey * | - |
1380 | load_identity_file(Identity *id) | - |
1381 | { | - |
1382 | struct sshkey *private = NULL; | - |
1383 | char prompt[300], *passphrase, *comment; | - |
1384 | int r, perm_ok = 0, quit = 0, i; | - |
1385 | struct stat st; | - |
1386 | | - |
1387 | if (stat(id->filename, &st) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1388 | (id->userprovided ? logit : debug3)("no such identity: %s: %s", | - |
1389 | id->filename, strerror(errno)); | - |
1390 | return NULL; never executed: return ((void *)0) ; | 0 |
1391 | } | - |
1392 | snprintf(prompt, sizeof prompt, | - |
1393 | "Enter passphrase for key '%.100s': ", id->filename); | - |
1394 | for (i = 0; i <= options.number_of_password_prompts; i++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1395 | if (i == 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1396 | passphrase = ""; never executed: passphrase = ""; | 0 |
1397 | else { | - |
1398 | passphrase = read_passphrase(prompt, 0); | - |
1399 | if (*passphrase == '\0') {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1400 | debug2("no passphrase given, try next key"); | - |
1401 | free(passphrase); | - |
1402 | break; never executed: break; | 0 |
1403 | } | - |
1404 | } never executed: end of block | 0 |
1405 | switch ((r = sshkey_load_private_type(KEY_UNSPEC, id->filename, | - |
1406 | passphrase, &private, &comment, &perm_ok))) { | - |
1407 | case 0: never executed: case 0: | 0 |
1408 | break; never executed: break; | 0 |
1409 | case SSH_ERR_KEY_WRONG_PASSPHRASE: never executed: case -43: | 0 |
1410 | if (options.batch_mode) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1411 | quit = 1; | - |
1412 | break; never executed: break; | 0 |
1413 | } | - |
1414 | if (i != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1415 | debug2("bad passphrase given, try again..."); never executed: debug2("bad passphrase given, try again..."); | 0 |
1416 | break; never executed: break; | 0 |
1417 | case SSH_ERR_SYSTEM_ERROR: never executed: case -24: | 0 |
1418 | if (errno == ENOENT) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1419 | debug2("Load key \"%s\": %s", | - |
1420 | id->filename, ssh_err(r)); | - |
1421 | quit = 1; | - |
1422 | break; never executed: break; | 0 |
1423 | } | - |
1424 | | - |
1425 | default: code before this statement never executed: default: never executed: default: | 0 |
1426 | error("Load key \"%s\": %s", id->filename, ssh_err(r)); | - |
1427 | quit = 1; | - |
1428 | break; never executed: break; | 0 |
1429 | } | - |
1430 | if (!quit && private != NULL && id->agent_fd == -1 &&TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1431 | !(id->key && id->isprivate))TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1432 | maybe_add_key_to_agent(id->filename, private, comment, never executed: maybe_add_key_to_agent(id->filename, private, comment, passphrase); | 0 |
1433 | passphrase); never executed: maybe_add_key_to_agent(id->filename, private, comment, passphrase); | 0 |
1434 | if (i > 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1435 | freezero(passphrase, strlen(passphrase)); never executed: freezero(passphrase, strlen(passphrase)); | 0 |
1436 | free(comment); | - |
1437 | if (private != NULL || quit)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1438 | break; never executed: break; | 0 |
1439 | } never executed: end of block | 0 |
1440 | return private; never executed: return private; | 0 |
1441 | } | - |
1442 | | - |
1443 | static int | - |
1444 | key_type_allowed_by_config(struct sshkey *key) | - |
1445 | { | - |
1446 | if (match_pattern_list(sshkey_ssh_name(key),TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1447 | options.pubkey_key_types, 0) == 1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1448 | return 1; never executed: return 1; | 0 |
1449 | | - |
1450 | | - |
1451 | switch (key->type) { | - |
1452 | case KEY_RSA: never executed: case KEY_RSA: | 0 |
1453 | if (match_pattern_list("rsa-sha2-512",TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1454 | options.pubkey_key_types, 0) == 1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1455 | return 1; never executed: return 1; | 0 |
1456 | if (match_pattern_list("rsa-sha2-256",TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1457 | options.pubkey_key_types, 0) == 1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1458 | return 1; never executed: return 1; | 0 |
1459 | break; never executed: break; | 0 |
1460 | case KEY_RSA_CERT: never executed: case KEY_RSA_CERT: | 0 |
1461 | if (match_pattern_list("rsa-sha2-512-cert-v01@openssh.com",TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1462 | options.pubkey_key_types, 0) == 1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1463 | return 1; never executed: return 1; | 0 |
1464 | if (match_pattern_list("rsa-sha2-256-cert-v01@openssh.com",TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1465 | options.pubkey_key_types, 0) == 1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1466 | return 1; never executed: return 1; | 0 |
1467 | break; never executed: break; | 0 |
1468 | } | - |
1469 | return 0; never executed: return 0; | 0 |
1470 | } | - |
1471 | | - |
1472 | | - |
1473 | | - |
1474 | | - |
1475 | | - |
1476 | | - |
1477 | | - |
1478 | | - |
1479 | | - |
1480 | | - |
1481 | static void | - |
1482 | pubkey_prepare(Authctxt *authctxt) | - |
1483 | { | - |
1484 | struct identity *id, *id2, *tmp; | - |
1485 | struct idlist agent, files, *preferred; | - |
1486 | struct sshkey *key; | - |
1487 | int agent_fd = -1, i, r, found; | - |
1488 | size_t j; | - |
1489 | struct ssh_identitylist *idlist; | - |
1490 | char *ident; | - |
1491 | | - |
1492 | TAILQ_INIT(&agent); | - |
1493 | TAILQ_INIT(&files); | - |
1494 | preferred = &authctxt->keys; | - |
1495 | TAILQ_INIT(preferred); | - |
1496 | | - |
1497 | | - |
1498 | for (i = 0; i < options.num_identity_files; i++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1499 | key = options.identity_keys[i]; | - |
1500 | if (key && key->cert && key->cert->type != SSH2_CERT_TYPE_USER)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1501 | continue; never executed: continue; | 0 |
1502 | options.identity_keys[i] = NULL; | - |
1503 | id = xcalloc(1, sizeof(*id)); | - |
1504 | id->agent_fd = -1; | - |
1505 | id->key = key; | - |
1506 | id->filename = xstrdup(options.identity_files[i]); | - |
1507 | id->userprovided = options.identity_file_userprovided[i]; | - |
1508 | TAILQ_INSERT_TAIL(&files, id, next); | - |
1509 | } never executed: end of block | 0 |
1510 | | - |
1511 | for (i = 0; i < options.num_certificate_files; i++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1512 | key = options.certificates[i]; | - |
1513 | if (!sshkey_is_cert(key) || key->cert == NULL ||TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1514 | key->cert->type != SSH2_CERT_TYPE_USER)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1515 | continue; never executed: continue; | 0 |
1516 | id = xcalloc(1, sizeof(*id)); | - |
1517 | id->agent_fd = -1; | - |
1518 | id->key = key; | - |
1519 | id->filename = xstrdup(options.certificate_files[i]); | - |
1520 | id->userprovided = options.certificate_file_userprovided[i]; | - |
1521 | TAILQ_INSERT_TAIL(preferred, id, next); | - |
1522 | } never executed: end of block | 0 |
1523 | | - |
1524 | if ((r = ssh_get_authentication_socket(&agent_fd)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1525 | if (r != SSH_ERR_AGENT_NOT_PRESENT)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1526 | debug("%s: ssh_get_authentication_socket: %s", never executed: debug("%s: ssh_get_authentication_socket: %s", __func__, ssh_err(r)); | 0 |
1527 | __func__, ssh_err(r)); never executed: debug("%s: ssh_get_authentication_socket: %s", __func__, ssh_err(r)); | 0 |
1528 | } else if ((r = ssh_fetch_identitylist(agent_fd, &idlist)) != 0) { never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1529 | if (r != SSH_ERR_AGENT_NO_IDENTITIES)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1530 | debug("%s: ssh_fetch_identitylist: %s", never executed: debug("%s: ssh_fetch_identitylist: %s", __func__, ssh_err(r)); | 0 |
1531 | __func__, ssh_err(r)); never executed: debug("%s: ssh_fetch_identitylist: %s", __func__, ssh_err(r)); | 0 |
1532 | close(agent_fd); | - |
1533 | } else { never executed: end of block | 0 |
1534 | for (j = 0; j < idlist->nkeys; j++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1535 | found = 0; | - |
1536 | TAILQ_FOREACH(id, &files, next) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1537 | | - |
1538 | | - |
1539 | | - |
1540 | | - |
1541 | if (sshkey_equal(idlist->keys[j], id->key)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1542 | TAILQ_REMOVE(&files, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&files)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1543 | TAILQ_INSERT_TAIL(preferred, id, next); | - |
1544 | id->agent_fd = agent_fd; | - |
1545 | found = 1; | - |
1546 | break; never executed: break; | 0 |
1547 | } | - |
1548 | } never executed: end of block | 0 |
1549 | if (!found && !options.identities_only) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1550 | id = xcalloc(1, sizeof(*id)); | - |
1551 | | - |
1552 | id->key = idlist->keys[j]; | - |
1553 | id->filename = idlist->comments[j]; | - |
1554 | idlist->keys[j] = NULL; | - |
1555 | idlist->comments[j] = NULL; | - |
1556 | id->agent_fd = agent_fd; | - |
1557 | TAILQ_INSERT_TAIL(&agent, id, next); | - |
1558 | } never executed: end of block | 0 |
1559 | } never executed: end of block | 0 |
1560 | ssh_free_identitylist(idlist); | - |
1561 | | - |
1562 | for (id = TAILQ_FIRST(&agent); id; id = TAILQ_FIRST(&agent)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1563 | TAILQ_REMOVE(&agent, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&agent)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1564 | TAILQ_INSERT_TAIL(preferred, id, next); | - |
1565 | } never executed: end of block | 0 |
1566 | authctxt->agent_fd = agent_fd; | - |
1567 | } never executed: end of block | 0 |
1568 | | - |
1569 | TAILQ_FOREACH_SAFE(id, &files, next, tmp) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1570 | if (id->key == NULL || (id->key->flags & SSHKEY_FLAG_EXT) == 0)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1571 | continue; never executed: continue; | 0 |
1572 | found = 0; | - |
1573 | TAILQ_FOREACH(id2, &files, next) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1574 | if (id2->key == NULL ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1575 | (id2->key->flags & SSHKEY_FLAG_EXT) == 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1576 | continue; never executed: continue; | 0 |
1577 | if (sshkey_equal(id->key, id2->key)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1578 | TAILQ_REMOVE(&files, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&files)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1579 | TAILQ_INSERT_TAIL(preferred, id, next); | - |
1580 | found = 1; | - |
1581 | break; never executed: break; | 0 |
1582 | } | - |
1583 | } never executed: end of block | 0 |
1584 | | - |
1585 | if (!found && options.identities_only) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1586 | TAILQ_REMOVE(&files, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&files)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1587 | freezero(id, sizeof(*id)); | - |
1588 | } never executed: end of block | 0 |
1589 | } never executed: end of block | 0 |
1590 | | - |
1591 | for (id = TAILQ_FIRST(&files); id; id = TAILQ_FIRST(&files)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1592 | TAILQ_REMOVE(&files, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&files)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1593 | TAILQ_INSERT_TAIL(preferred, id, next); | - |
1594 | } never executed: end of block | 0 |
1595 | | - |
1596 | TAILQ_FOREACH_SAFE(id, preferred, next, id2) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1597 | if (id->key != NULL && !key_type_allowed_by_config(id->key)) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1598 | debug("Skipping %s key %s - " | - |
1599 | "not in PubkeyAcceptedKeyTypes", | - |
1600 | sshkey_ssh_name(id->key), id->filename); | - |
1601 | TAILQ_REMOVE(preferred, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (preferred)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1602 | sshkey_free(id->key); | - |
1603 | free(id->filename); | - |
1604 | memset(id, 0, sizeof(*id)); | - |
1605 | continue; never executed: continue; | 0 |
1606 | } | - |
1607 | } never executed: end of block | 0 |
1608 | | - |
1609 | TAILQ_FOREACH_SAFE(id, preferred, next, id2) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1610 | ident = format_identity(id); | - |
1611 | debug("Will attempt key: %s", ident); | - |
1612 | free(ident); | - |
1613 | } never executed: end of block | 0 |
1614 | debug2("%s: done", __func__); | - |
1615 | } never executed: end of block | 0 |
1616 | | - |
1617 | static void | - |
1618 | pubkey_cleanup(Authctxt *authctxt) | - |
1619 | { | - |
1620 | Identity *id; | - |
1621 | | - |
1622 | if (authctxt->agent_fd != -1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1623 | ssh_close_authentication_socket(authctxt->agent_fd); never executed: ssh_close_authentication_socket(authctxt->agent_fd); | 0 |
1624 | for (id = TAILQ_FIRST(&authctxt->keys); id;TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1625 | id = TAILQ_FIRST(&authctxt->keys)) { | - |
1626 | TAILQ_REMOVE(&authctxt->keys, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&authctxt->keys)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1627 | sshkey_free(id->key); | - |
1628 | free(id->filename); | - |
1629 | free(id); | - |
1630 | } never executed: end of block | 0 |
1631 | } never executed: end of block | 0 |
1632 | | - |
1633 | static void | - |
1634 | pubkey_reset(Authctxt *authctxt) | - |
1635 | { | - |
1636 | Identity *id; | - |
1637 | | - |
1638 | TAILQ_FOREACH(id, &authctxt->keys, next)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1639 | id->tried = 0; never executed: id->tried = 0; | 0 |
1640 | } never executed: end of block | 0 |
1641 | | - |
1642 | static int | - |
1643 | try_identity(Identity *id) | - |
1644 | { | - |
1645 | if (!id->key)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1646 | return (0); never executed: return (0); | 0 |
1647 | if (sshkey_type_plain(id->key->type) == KEY_RSA &&TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1648 | (datafellows & SSH_BUG_RSASIGMD5) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1649 | debug("Skipped %s key %s for RSA/MD5 server", | - |
1650 | sshkey_type(id->key), id->filename); | - |
1651 | return (0); never executed: return (0); | 0 |
1652 | } | - |
1653 | return 1; never executed: return 1; | 0 |
1654 | } | - |
1655 | | - |
1656 | int | - |
1657 | userauth_pubkey(Authctxt *authctxt) | - |
1658 | { | - |
1659 | struct ssh *ssh = active_state; | - |
1660 | Identity *id; | - |
1661 | int sent = 0; | - |
1662 | char *ident; | - |
1663 | | - |
1664 | while ((id = TAILQ_FIRST(&authctxt->keys))) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1665 | if (id->tried++)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1666 | return (0); never executed: return (0); | 0 |
1667 | | - |
1668 | TAILQ_REMOVE(&authctxt->keys, id, next); never executed: (id)->next.tqe_next->next.tqe_prev = (id)->next.tqe_prev; never executed: (&authctxt->keys)->tqh_last = (id)->next.tqe_prev; TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1669 | TAILQ_INSERT_TAIL(&authctxt->keys, id, next); | - |
1670 | | - |
1671 | | - |
1672 | | - |
1673 | | - |
1674 | | - |
1675 | if (id->key != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1676 | if (try_identity(id)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1677 | ident = format_identity(id); | - |
1678 | debug("Offering public key: %s", ident); | - |
1679 | free(ident); | - |
1680 | sent = send_pubkey_test(ssh, authctxt, id); | - |
1681 | } never executed: end of block | 0 |
1682 | } else { never executed: end of block | 0 |
1683 | debug("Trying private key: %s", id->filename); | - |
1684 | id->key = load_identity_file(id); | - |
1685 | if (id->key != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1686 | if (try_identity(id)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1687 | id->isprivate = 1; | - |
1688 | sent = sign_and_send_pubkey(ssh, | - |
1689 | authctxt, id); | - |
1690 | } never executed: end of block | 0 |
1691 | sshkey_free(id->key); | - |
1692 | id->key = NULL; | - |
1693 | id->isprivate = 0; | - |
1694 | } never executed: end of block | 0 |
1695 | } never executed: end of block | 0 |
1696 | if (sent)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1697 | return (sent); never executed: return (sent); | 0 |
1698 | } never executed: end of block | 0 |
1699 | return (0); never executed: return (0); | 0 |
1700 | } | - |
1701 | | - |
1702 | | - |
1703 | | - |
1704 | | - |
1705 | int | - |
1706 | userauth_kbdint(Authctxt *authctxt) | - |
1707 | { | - |
1708 | struct ssh *ssh = active_state; | - |
1709 | static int attempt = 0; | - |
1710 | int r; | - |
1711 | | - |
1712 | if (attempt++ >= options.number_of_password_prompts)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1713 | return 0; never executed: return 0; | 0 |
1714 | | - |
1715 | if (attempt > 1 && !authctxt->info_req_seen) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1716 | debug3("userauth_kbdint: disable: no info_req_seen"); | - |
1717 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_INFO_REQUEST, NULL); | - |
1718 | return 0; never executed: return 0; | 0 |
1719 | } | - |
1720 | | - |
1721 | debug2("userauth_kbdint"); | - |
1722 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1723 | (r = sshpkt_put_cstring(ssh, authctxt->server_user)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1724 | (r = sshpkt_put_cstring(ssh, authctxt->service)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1725 | (r = sshpkt_put_cstring(ssh, authctxt->method->name)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1726 | (r = sshpkt_put_cstring(ssh, "")) != 0 || TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1727 | (r = sshpkt_put_cstring(ssh, options.kbd_interactive_devices ?TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1728 | options.kbd_interactive_devices : "")) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1729 | (r = sshpkt_send(ssh)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1730 | fatal("%s: %s", __func__, ssh_err(r)); never executed: fatal("%s: %s", __func__, ssh_err(r)); | 0 |
1731 | | - |
1732 | ssh_dispatch_set(ssh, SSH2_MSG_USERAUTH_INFO_REQUEST, &input_userauth_info_req); | - |
1733 | return 1; never executed: return 1; | 0 |
1734 | } | - |
1735 | | - |
1736 | | - |
1737 | | - |
1738 | | - |
1739 | int | - |
1740 | input_userauth_info_req(int type, u_int32_t seq, struct ssh *ssh) | - |
1741 | { | - |
1742 | Authctxt *authctxt = ssh->authctxt; | - |
1743 | char *name = NULL, *inst = NULL, *lang = NULL, *prompt = NULL; | - |
1744 | char *response = NULL; | - |
1745 | u_char echo = 0; | - |
1746 | u_int num_prompts, i; | - |
1747 | int r; | - |
1748 | | - |
1749 | debug2("input_userauth_info_req"); | - |
1750 | | - |
1751 | if (authctxt == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1752 | fatal("input_userauth_info_req: no authentication context"); never executed: fatal("input_userauth_info_req: no authentication context"); | 0 |
1753 | | - |
1754 | authctxt->info_req_seen = 1; | - |
1755 | | - |
1756 | if ((r = sshpkt_get_cstring(ssh, &name, NULL)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1757 | (r = sshpkt_get_cstring(ssh, &inst, NULL)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1758 | (r = sshpkt_get_cstring(ssh, &lang, NULL)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1759 | goto out; never executed: goto out; | 0 |
1760 | if (strlen(name) > 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1761 | logit("%s", name); never executed: logit("%s", name); | 0 |
1762 | if (strlen(inst) > 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1763 | logit("%s", inst); never executed: logit("%s", inst); | 0 |
1764 | | - |
1765 | if ((r = sshpkt_get_u32(ssh, &num_prompts)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1766 | goto out; never executed: goto out; | 0 |
1767 | | - |
1768 | | - |
1769 | | - |
1770 | | - |
1771 | | - |
1772 | | - |
1773 | if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_INFO_RESPONSE)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1774 | (r = sshpkt_put_u32(ssh, num_prompts)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1775 | goto out; never executed: goto out; | 0 |
1776 | | - |
1777 | debug2("input_userauth_info_req: num_prompts %d", num_prompts); | - |
1778 | for (i = 0; i < num_prompts; i++) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1779 | if ((r = sshpkt_get_cstring(ssh, &prompt, NULL)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1780 | (r = sshpkt_get_u8(ssh, &echo)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1781 | goto out; never executed: goto out; | 0 |
1782 | response = read_passphrase(prompt, echo ? RP_ECHO : 0); | - |
1783 | if ((r = sshpkt_put_cstring(ssh, response)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1784 | goto out; never executed: goto out; | 0 |
1785 | freezero(response, strlen(response)); | - |
1786 | free(prompt); | - |
1787 | response = prompt = NULL; | - |
1788 | } never executed: end of block | 0 |
1789 | | - |
1790 | if ((r = sshpkt_get_end(ssh)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1791 | (r = sshpkt_add_padding(ssh, 64)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1792 | goto out; never executed: goto out; | 0 |
1793 | r = sshpkt_send(ssh); | - |
1794 | out: code before this statement never executed: out: | 0 |
1795 | if (response)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1796 | freezero(response, strlen(response)); never executed: freezero(response, strlen(response)); | 0 |
1797 | free(prompt); | - |
1798 | free(name); | - |
1799 | free(inst); | - |
1800 | free(lang); | - |
1801 | return r; never executed: return r; | 0 |
1802 | } | - |
1803 | | - |
1804 | static int | - |
1805 | ssh_keysign(struct sshkey *key, u_char **sigp, size_t *lenp, | - |
1806 | const u_char *data, size_t datalen) | - |
1807 | { | - |
1808 | struct sshbuf *b; | - |
1809 | struct stat st; | - |
1810 | pid_t pid; | - |
1811 | int i, r, to[2], from[2], status, sock = packet_get_connection_in(); | - |
1812 | u_char rversion = 0, version = 2; | - |
1813 | void (*osigchld)(int); | - |
1814 | | - |
1815 | *sigp = NULL; | - |
1816 | *lenp = 0; | - |
1817 | | - |
1818 | if (stat(_PATH_SSH_KEY_SIGN, &st) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1819 | error("%s: not installed: %s", __func__, strerror(errno)); | - |
1820 | return -1; never executed: return -1; | 0 |
1821 | } | - |
1822 | if (fflush(stdout) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1823 | error("%s: fflush: %s", __func__, strerror(errno)); | - |
1824 | return -1; never executed: return -1; | 0 |
1825 | } | - |
1826 | if (pipe(to) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1827 | error("%s: pipe: %s", __func__, strerror(errno)); | - |
1828 | return -1; never executed: return -1; | 0 |
1829 | } | - |
1830 | if (pipe(from) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1831 | error("%s: pipe: %s", __func__, strerror(errno)); | - |
1832 | return -1; never executed: return -1; | 0 |
1833 | } | - |
1834 | if ((pid = fork()) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1835 | error("%s: fork: %s", __func__, strerror(errno)); | - |
1836 | return -1; never executed: return -1; | 0 |
1837 | } | - |
1838 | osigchld = signal(SIGCHLD, SIG_DFL); | - |
1839 | if (pid == 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1840 | | - |
1841 | fcntl(sock, F_SETFD, 0); | - |
1842 | close(from[0]); | - |
1843 | if (dup2(from[1], STDOUT_FILENO) < 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1844 | fatal("%s: dup2: %s", __func__, strerror(errno)); never executed: fatal("%s: dup2: %s", __func__, strerror( (*__errno_location ()) )); | 0 |
1845 | close(to[1]); | - |
1846 | if (dup2(to[0], STDIN_FILENO) < 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1847 | fatal("%s: dup2: %s", __func__, strerror(errno)); never executed: fatal("%s: dup2: %s", __func__, strerror( (*__errno_location ()) )); | 0 |
1848 | close(from[1]); | - |
1849 | close(to[0]); | - |
1850 | | - |
1851 | for (i = STDERR_FILENO + 1; i < sock; i++)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1852 | close(i); never executed: close(i); | 0 |
1853 | closefrom(sock + 1); | - |
1854 | debug3("%s: [child] pid=%ld, exec %s", | - |
1855 | __func__, (long)getpid(), _PATH_SSH_KEY_SIGN); | - |
1856 | execl(_PATH_SSH_KEY_SIGN, _PATH_SSH_KEY_SIGN, (char *)NULL); | - |
1857 | fatal("%s: exec(%s): %s", __func__, _PATH_SSH_KEY_SIGN, | - |
1858 | strerror(errno)); | - |
1859 | } never executed: end of block | 0 |
1860 | close(from[1]); | - |
1861 | close(to[0]); | - |
1862 | | - |
1863 | if ((b = sshbuf_new()) == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1864 | fatal("%s: sshbuf_new failed", __func__); never executed: fatal("%s: sshbuf_new failed", __func__); | 0 |
1865 | | - |
1866 | if ((r = sshbuf_put_u32(b, sock)) != 0 ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1867 | (r = sshbuf_put_string(b, data, datalen)) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1868 | fatal("%s: buffer error: %s", __func__, ssh_err(r)); never executed: fatal("%s: buffer error: %s", __func__, ssh_err(r)); | 0 |
1869 | if (ssh_msg_send(to[1], version, b) == -1)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1870 | fatal("%s: couldn't send request", __func__); never executed: fatal("%s: couldn't send request", __func__); | 0 |
1871 | sshbuf_reset(b); | - |
1872 | r = ssh_msg_recv(from[0], b); | - |
1873 | close(from[0]); | - |
1874 | close(to[1]); | - |
1875 | if (r < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1876 | error("%s: no reply", __func__); | - |
1877 | goto fail; never executed: goto fail; | 0 |
1878 | } | - |
1879 | | - |
1880 | errno = 0; | - |
1881 | while (waitpid(pid, &status, 0) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1882 | if (errno != EINTR) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1883 | error("%s: waitpid %ld: %s", | - |
1884 | __func__, (long)pid, strerror(errno)); | - |
1885 | goto fail; never executed: goto fail; | 0 |
1886 | } | - |
1887 | } never executed: end of block | 0 |
1888 | if (!WIFEXITED(status)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1889 | error("%s: exited abnormally", __func__); | - |
1890 | goto fail; never executed: goto fail; | 0 |
1891 | } | - |
1892 | if (WEXITSTATUS(status) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1893 | error("%s: exited with status %d", | - |
1894 | __func__, WEXITSTATUS(status)); | - |
1895 | goto fail; never executed: goto fail; | 0 |
1896 | } | - |
1897 | if ((r = sshbuf_get_u8(b, &rversion)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1898 | error("%s: buffer error: %s", __func__, ssh_err(r)); | - |
1899 | goto fail; never executed: goto fail; | 0 |
1900 | } | - |
1901 | if (rversion != version) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1902 | error("%s: bad version", __func__); | - |
1903 | goto fail; never executed: goto fail; | 0 |
1904 | } | - |
1905 | if ((r = sshbuf_get_string(b, sigp, lenp)) != 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1906 | error("%s: buffer error: %s", __func__, ssh_err(r)); | - |
1907 | fail: code before this statement never executed: fail: | 0 |
1908 | signal(SIGCHLD, osigchld); | - |
1909 | sshbuf_free(b); | - |
1910 | return -1; never executed: return -1; | 0 |
1911 | } | - |
1912 | signal(SIGCHLD, osigchld); | - |
1913 | sshbuf_free(b); | - |
1914 | | - |
1915 | return 0; never executed: return 0; | 0 |
1916 | } | - |
1917 | | - |
1918 | int | - |
1919 | userauth_hostbased(Authctxt *authctxt) | - |
1920 | { | - |
1921 | struct ssh *ssh = active_state; | - |
1922 | struct sshkey *private = NULL; | - |
1923 | struct sshbuf *b = NULL; | - |
1924 | u_char *sig = NULL, *keyblob = NULL; | - |
1925 | char *fp = NULL, *chost = NULL, *lname = NULL; | - |
1926 | size_t siglen = 0, keylen = 0; | - |
1927 | int i, r, success = 0; | - |
1928 | | - |
1929 | if (authctxt->ktypes == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1930 | authctxt->oktypes = xstrdup(options.hostbased_key_types); | - |
1931 | authctxt->ktypes = authctxt->oktypes; | - |
1932 | } never executed: end of block | 0 |
1933 | | - |
1934 | | - |
1935 | | - |
1936 | | - |
1937 | | - |
1938 | for (;;) { | - |
1939 | if (authctxt->active_ktype == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1940 | authctxt->active_ktype = strsep(&authctxt->ktypes, ","); never executed: authctxt->active_ktype = __extension__ ({ char __r0, __r1, __r2; (__builtin_constant_p ( "," ) && ((size_t)(const void *)(( "," ) + 1) - (size_t)(const void *)( "," ) == 1) && (__r0 = ((const char *) ( "," ))[0], ((const char *) ( "," ))[0] != '\0') ? ((_..." ))[2], __r2 == '\0') ? __strsep_2c ( &authctxt->ktypes , __r0, __r1) : (((const char *) ( "," ))[3] == '\0' ? __strsep_3c ( &authctxt->ktypes , __r0, __r1, __r2) : __strsep_g ( &authctxt->ktypes , "," )))) : __strsep_g ( &authctxt->ktypes , "," )); }) ; | 0 |
1941 | if (authctxt->active_ktype == NULL ||TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1942 | *authctxt->active_ktype == '\0')TRUE | never evaluated | FALSE | never evaluated |
| 0 |
1943 | break; never executed: break; | 0 |
1944 | debug3("%s: trying key type %s", __func__, | - |
1945 | authctxt->active_ktype); | - |
1946 | | - |
1947 | | - |
1948 | private = NULL; | - |
1949 | for (i = 0; i < authctxt->sensitive->nkeys; i++) { |