Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1 | /* |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 2 | * Copyright (c) 1999 Dug Song. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 23 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 24 | |
| 25 | #include "includes.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame^] | 26 | RCSID("$OpenBSD: auth-krb4.c,v 1.22 2001/01/21 19:05:41 markus Exp $"); |
Damien Miller | bf7f466 | 2000-06-23 10:16:38 +1000 | [diff] [blame] | 27 | |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 28 | #ifdef KRB4 |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame^] | 29 | #include "ssh.h" |
| 30 | #include "ssh1.h" |
| 31 | #include "packet.h" |
| 32 | #include "xmalloc.h" |
| 33 | #include "log.h" |
| 34 | #include "servconf.h" |
| 35 | #include "auth.h" |
| 36 | #include "radix.h" |
| 37 | |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 38 | char *ticket = NULL; |
| 39 | |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 40 | extern ServerOptions options; |
| 41 | |
| 42 | /* |
| 43 | * try krb4 authentication, |
| 44 | * return 1 on success, 0 on failure, -1 if krb4 is not available |
| 45 | */ |
| 46 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 47 | int |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 48 | auth_krb4_password(struct passwd * pw, const char *password) |
| 49 | { |
| 50 | AUTH_DAT adata; |
| 51 | KTEXT_ST tkt; |
| 52 | struct hostent *hp; |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 53 | u_long faddr; |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 54 | char localhost[MAXHOSTNAMELEN]; |
| 55 | char phost[INST_SZ]; |
| 56 | char realm[REALM_SZ]; |
| 57 | int r; |
| 58 | |
| 59 | /* |
| 60 | * Try Kerberos password authentication only for non-root |
| 61 | * users and only if Kerberos is installed. |
| 62 | */ |
| 63 | if (pw->pw_uid != 0 && krb_get_lrealm(realm, 1) == KSUCCESS) { |
| 64 | |
| 65 | /* Set up our ticket file. */ |
| 66 | if (!krb4_init(pw->pw_uid)) { |
| 67 | log("Couldn't initialize Kerberos ticket file for %s!", |
| 68 | pw->pw_name); |
| 69 | goto kerberos_auth_failure; |
| 70 | } |
| 71 | /* Try to get TGT using our password. */ |
| 72 | r = krb_get_pw_in_tkt((char *) pw->pw_name, "", |
| 73 | realm, "krbtgt", realm, |
| 74 | DEFAULT_TKT_LIFE, (char *) password); |
| 75 | if (r != INTK_OK) { |
| 76 | packet_send_debug("Kerberos V4 password " |
| 77 | "authentication for %s failed: %s", |
| 78 | pw->pw_name, krb_err_txt[r]); |
| 79 | goto kerberos_auth_failure; |
| 80 | } |
| 81 | /* Successful authentication. */ |
| 82 | chown(tkt_string(), pw->pw_uid, pw->pw_gid); |
| 83 | |
| 84 | /* |
| 85 | * Now that we have a TGT, try to get a local |
| 86 | * "rcmd" ticket to ensure that we are not talking |
| 87 | * to a bogus Kerberos server. |
| 88 | */ |
| 89 | (void) gethostname(localhost, sizeof(localhost)); |
| 90 | (void) strlcpy(phost, (char *) krb_get_phost(localhost), |
| 91 | INST_SZ); |
| 92 | r = krb_mk_req(&tkt, KRB4_SERVICE_NAME, phost, realm, 33); |
| 93 | |
| 94 | if (r == KSUCCESS) { |
| 95 | if (!(hp = gethostbyname(localhost))) { |
| 96 | log("Couldn't get local host address!"); |
| 97 | goto kerberos_auth_failure; |
| 98 | } |
| 99 | memmove((void *) &faddr, (void *) hp->h_addr, |
| 100 | sizeof(faddr)); |
| 101 | |
| 102 | /* Verify our "rcmd" ticket. */ |
| 103 | r = krb_rd_req(&tkt, KRB4_SERVICE_NAME, phost, |
| 104 | faddr, &adata, ""); |
| 105 | if (r == RD_AP_UNDEC) { |
| 106 | /* |
| 107 | * Probably didn't have a srvtab on |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 108 | * localhost. Disallow login. |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 109 | */ |
| 110 | log("Kerberos V4 TGT for %s unverifiable, " |
| 111 | "no srvtab installed? krb_rd_req: %s", |
| 112 | pw->pw_name, krb_err_txt[r]); |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 113 | goto kerberos_auth_failure; |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 114 | } else if (r != KSUCCESS) { |
| 115 | log("Kerberos V4 %s ticket unverifiable: %s", |
| 116 | KRB4_SERVICE_NAME, krb_err_txt[r]); |
| 117 | goto kerberos_auth_failure; |
| 118 | } |
| 119 | } else if (r == KDC_PR_UNKNOWN) { |
| 120 | /* |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 121 | * Disallow login if no rcmd service exists, and |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 122 | * log the error. |
| 123 | */ |
| 124 | log("Kerberos V4 TGT for %s unverifiable: %s; %s.%s " |
| 125 | "not registered, or srvtab is wrong?", pw->pw_name, |
| 126 | krb_err_txt[r], KRB4_SERVICE_NAME, phost); |
Damien Miller | 942da03 | 2000-08-18 13:59:06 +1000 | [diff] [blame] | 127 | goto kerberos_auth_failure; |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 128 | } else { |
| 129 | /* |
| 130 | * TGT is bad, forget it. Possibly spoofed! |
| 131 | */ |
| 132 | packet_send_debug("WARNING: Kerberos V4 TGT " |
| 133 | "possibly spoofed for %s: %s", |
| 134 | pw->pw_name, krb_err_txt[r]); |
| 135 | goto kerberos_auth_failure; |
| 136 | } |
| 137 | |
| 138 | /* Authentication succeeded. */ |
| 139 | return 1; |
| 140 | |
| 141 | kerberos_auth_failure: |
| 142 | krb4_cleanup_proc(NULL); |
| 143 | |
| 144 | if (!options.kerberos_or_local_passwd) |
| 145 | return 0; |
| 146 | } else { |
| 147 | /* Logging in as root or no local Kerberos realm. */ |
| 148 | packet_send_debug("Unable to authenticate to Kerberos."); |
| 149 | } |
| 150 | /* Fall back to ordinary passwd authentication. */ |
| 151 | return -1; |
| 152 | } |
| 153 | |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 154 | void |
| 155 | krb4_cleanup_proc(void *ignore) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 156 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 157 | debug("krb4_cleanup_proc called"); |
| 158 | if (ticket) { |
| 159 | (void) dest_tkt(); |
| 160 | xfree(ticket); |
| 161 | ticket = NULL; |
| 162 | } |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 163 | } |
| 164 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 165 | int |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 166 | krb4_init(uid_t uid) |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 167 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 168 | static int cleanup_registered = 0; |
Damien Miller | 450a7a1 | 2000-03-26 13:04:51 +1000 | [diff] [blame] | 169 | const char *tkt_root = TKT_ROOT; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 170 | struct stat st; |
| 171 | int fd; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 172 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 173 | if (!ticket) { |
| 174 | /* Set unique ticket string manually since we're still root. */ |
| 175 | ticket = xmalloc(MAXPATHLEN); |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 176 | #ifdef AFS |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 177 | if (lstat("/ticket", &st) != -1) |
| 178 | tkt_root = "/ticket/"; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 179 | #endif /* AFS */ |
Damien Miller | caf6dd6 | 2000-08-29 11:33:50 +1100 | [diff] [blame] | 180 | snprintf(ticket, MAXPATHLEN, "%s%u_%d", tkt_root, uid, getpid()); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 181 | (void) krb_set_tkt_string(ticket); |
| 182 | } |
| 183 | /* Register ticket cleanup in case of fatal error. */ |
| 184 | if (!cleanup_registered) { |
| 185 | fatal_add_cleanup(krb4_cleanup_proc, NULL); |
| 186 | cleanup_registered = 1; |
| 187 | } |
| 188 | /* Try to create our ticket file. */ |
| 189 | if ((fd = mkstemp(ticket)) != -1) { |
| 190 | close(fd); |
| 191 | return 1; |
| 192 | } |
| 193 | /* Ticket file exists - make sure user owns it (just passed ticket). */ |
| 194 | if (lstat(ticket, &st) != -1) { |
| 195 | if (st.st_mode == (S_IFREG | S_IRUSR | S_IWUSR) && |
| 196 | st.st_uid == uid) |
| 197 | return 1; |
| 198 | } |
| 199 | /* Failure - cancel cleanup function, leaving bad ticket for inspection. */ |
| 200 | log("WARNING: bad ticket file %s", ticket); |
| 201 | fatal_remove_cleanup(krb4_cleanup_proc, NULL); |
| 202 | cleanup_registered = 0; |
| 203 | xfree(ticket); |
| 204 | ticket = NULL; |
| 205 | |
| 206 | return 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 207 | } |
| 208 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 209 | int |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 210 | auth_krb4(const char *server_user, KTEXT auth, char **client) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 211 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 212 | AUTH_DAT adat = {0}; |
| 213 | KTEXT_ST reply; |
| 214 | char instance[INST_SZ]; |
| 215 | int r, s; |
Damien Miller | 7684ee1 | 2000-03-17 23:40:15 +1100 | [diff] [blame] | 216 | socklen_t slen; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 217 | u_int cksum; |
| 218 | Key_schedule schedule; |
| 219 | struct sockaddr_in local, foreign; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 220 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 221 | s = packet_get_connection_in(); |
| 222 | |
Damien Miller | 7684ee1 | 2000-03-17 23:40:15 +1100 | [diff] [blame] | 223 | slen = sizeof(local); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 224 | memset(&local, 0, sizeof(local)); |
Damien Miller | 7684ee1 | 2000-03-17 23:40:15 +1100 | [diff] [blame] | 225 | if (getsockname(s, (struct sockaddr *) & local, &slen) < 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 226 | debug("getsockname failed: %.100s", strerror(errno)); |
Damien Miller | 7684ee1 | 2000-03-17 23:40:15 +1100 | [diff] [blame] | 227 | slen = sizeof(foreign); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 228 | memset(&foreign, 0, sizeof(foreign)); |
Damien Miller | 7684ee1 | 2000-03-17 23:40:15 +1100 | [diff] [blame] | 229 | if (getpeername(s, (struct sockaddr *) & foreign, &slen) < 0) { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 230 | debug("getpeername failed: %.100s", strerror(errno)); |
| 231 | fatal_cleanup(); |
| 232 | } |
| 233 | instance[0] = '*'; |
| 234 | instance[1] = 0; |
| 235 | |
| 236 | /* Get the encrypted request, challenge, and session key. */ |
| 237 | if ((r = krb_rd_req(auth, KRB4_SERVICE_NAME, instance, 0, &adat, ""))) { |
| 238 | packet_send_debug("Kerberos V4 krb_rd_req: %.100s", krb_err_txt[r]); |
| 239 | return 0; |
| 240 | } |
| 241 | des_key_sched((des_cblock *) adat.session, schedule); |
| 242 | |
| 243 | *client = xmalloc(MAX_K_NAME_SZ); |
| 244 | (void) snprintf(*client, MAX_K_NAME_SZ, "%s%s%s@%s", adat.pname, |
| 245 | *adat.pinst ? "." : "", adat.pinst, adat.prealm); |
| 246 | |
| 247 | /* Check ~/.klogin authorization now. */ |
| 248 | if (kuserok(&adat, (char *) server_user) != KSUCCESS) { |
| 249 | packet_send_debug("Kerberos V4 .klogin authorization failed!"); |
| 250 | log("Kerberos V4 .klogin authorization failed for %s to account %s", |
| 251 | *client, server_user); |
| 252 | xfree(*client); |
| 253 | return 0; |
| 254 | } |
| 255 | /* Increment the checksum, and return it encrypted with the |
| 256 | session key. */ |
| 257 | cksum = adat.checksum + 1; |
| 258 | cksum = htonl(cksum); |
| 259 | |
| 260 | /* If we can't successfully encrypt the checksum, we send back an |
| 261 | empty message, admitting our failure. */ |
| 262 | if ((r = krb_mk_priv((u_char *) & cksum, reply.dat, sizeof(cksum) + 1, |
| 263 | schedule, &adat.session, &local, &foreign)) < 0) { |
| 264 | packet_send_debug("Kerberos V4 mk_priv: (%d) %s", r, krb_err_txt[r]); |
| 265 | reply.dat[0] = 0; |
| 266 | reply.length = 0; |
| 267 | } else |
| 268 | reply.length = r; |
| 269 | |
| 270 | /* Clear session key. */ |
| 271 | memset(&adat.session, 0, sizeof(&adat.session)); |
| 272 | |
| 273 | packet_start(SSH_SMSG_AUTH_KERBEROS_RESPONSE); |
| 274 | packet_put_string((char *) reply.dat, reply.length); |
| 275 | packet_send(); |
| 276 | packet_write_wait(); |
| 277 | return 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 278 | } |
| 279 | #endif /* KRB4 */ |
| 280 | |
| 281 | #ifdef AFS |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 282 | int |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 283 | auth_kerberos_tgt(struct passwd *pw, const char *string) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 284 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 285 | CREDENTIALS creds; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 286 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 287 | if (pw == NULL) |
| 288 | goto auth_kerberos_tgt_failure; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 289 | if (!radix_to_creds(string, &creds)) { |
| 290 | log("Protocol error decoding Kerberos V4 tgt"); |
| 291 | packet_send_debug("Protocol error decoding Kerberos V4 tgt"); |
| 292 | goto auth_kerberos_tgt_failure; |
| 293 | } |
| 294 | if (strncmp(creds.service, "", 1) == 0) /* backward compatibility */ |
| 295 | strlcpy(creds.service, "krbtgt", sizeof creds.service); |
| 296 | |
| 297 | if (strcmp(creds.service, "krbtgt")) { |
| 298 | log("Kerberos V4 tgt (%s%s%s@%s) rejected for %s", creds.pname, |
| 299 | creds.pinst[0] ? "." : "", creds.pinst, creds.realm, |
| 300 | pw->pw_name); |
| 301 | packet_send_debug("Kerberos V4 tgt (%s%s%s@%s) rejected for %s", |
| 302 | creds.pname, creds.pinst[0] ? "." : "", creds.pinst, |
| 303 | creds.realm, pw->pw_name); |
| 304 | goto auth_kerberos_tgt_failure; |
| 305 | } |
| 306 | if (!krb4_init(pw->pw_uid)) |
| 307 | goto auth_kerberos_tgt_failure; |
| 308 | |
| 309 | if (in_tkt(creds.pname, creds.pinst) != KSUCCESS) |
| 310 | goto auth_kerberos_tgt_failure; |
| 311 | |
| 312 | if (save_credentials(creds.service, creds.instance, creds.realm, |
| 313 | creds.session, creds.lifetime, creds.kvno, |
| 314 | &creds.ticket_st, creds.issue_date) != KSUCCESS) { |
| 315 | packet_send_debug("Kerberos V4 tgt refused: couldn't save credentials"); |
| 316 | goto auth_kerberos_tgt_failure; |
| 317 | } |
| 318 | /* Successful authentication, passed all checks. */ |
| 319 | chown(tkt_string(), pw->pw_uid, pw->pw_gid); |
| 320 | |
| 321 | packet_send_debug("Kerberos V4 tgt accepted (%s.%s@%s, %s%s%s@%s)", |
| 322 | creds.service, creds.instance, creds.realm, creds.pname, |
| 323 | creds.pinst[0] ? "." : "", creds.pinst, creds.realm); |
| 324 | memset(&creds, 0, sizeof(creds)); |
| 325 | packet_start(SSH_SMSG_SUCCESS); |
| 326 | packet_send(); |
| 327 | packet_write_wait(); |
| 328 | return 1; |
| 329 | |
| 330 | auth_kerberos_tgt_failure: |
| 331 | krb4_cleanup_proc(NULL); |
| 332 | memset(&creds, 0, sizeof(creds)); |
| 333 | packet_start(SSH_SMSG_FAILURE); |
| 334 | packet_send(); |
| 335 | packet_write_wait(); |
| 336 | return 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 337 | } |
| 338 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 339 | int |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 340 | auth_afs_token(struct passwd *pw, const char *token_string) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 341 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 342 | CREDENTIALS creds; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 343 | uid_t uid; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 344 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 345 | if (pw == NULL) { |
| 346 | /* XXX fake protocol error */ |
| 347 | packet_send_debug("Protocol error decoding AFS token"); |
| 348 | packet_start(SSH_SMSG_FAILURE); |
| 349 | packet_send(); |
| 350 | packet_write_wait(); |
| 351 | return 0; |
| 352 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 353 | if (!radix_to_creds(token_string, &creds)) { |
| 354 | log("Protocol error decoding AFS token"); |
| 355 | packet_send_debug("Protocol error decoding AFS token"); |
| 356 | packet_start(SSH_SMSG_FAILURE); |
| 357 | packet_send(); |
| 358 | packet_write_wait(); |
| 359 | return 0; |
| 360 | } |
| 361 | if (strncmp(creds.service, "", 1) == 0) /* backward compatibility */ |
| 362 | strlcpy(creds.service, "afs", sizeof creds.service); |
| 363 | |
| 364 | if (strncmp(creds.pname, "AFS ID ", 7) == 0) |
| 365 | uid = atoi(creds.pname + 7); |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 366 | else |
| 367 | uid = pw->pw_uid; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 368 | |
| 369 | if (kafs_settoken(creds.realm, uid, &creds)) { |
| 370 | log("AFS token (%s@%s) rejected for %s", creds.pname, creds.realm, |
| 371 | pw->pw_name); |
| 372 | packet_send_debug("AFS token (%s@%s) rejected for %s", creds.pname, |
| 373 | creds.realm, pw->pw_name); |
| 374 | memset(&creds, 0, sizeof(creds)); |
| 375 | packet_start(SSH_SMSG_FAILURE); |
| 376 | packet_send(); |
| 377 | packet_write_wait(); |
| 378 | return 0; |
| 379 | } |
| 380 | packet_send_debug("AFS token accepted (%s@%s, %s@%s)", creds.service, |
| 381 | creds.realm, creds.pname, creds.realm); |
| 382 | memset(&creds, 0, sizeof(creds)); |
| 383 | packet_start(SSH_SMSG_SUCCESS); |
| 384 | packet_send(); |
| 385 | packet_write_wait(); |
| 386 | return 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 387 | } |
| 388 | #endif /* AFS */ |