| 1 | /************************************************* |
| 2 | * Exim - an Internet mail transport agent * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
| 6 | /* See the file NOTICE for conditions of use and distribution. */ |
| 7 | |
| 8 | /* This code was originally contributed by Matthew Byng-Maddick */ |
| 9 | |
| 10 | /* Copyright (c) A L Digital 2004 */ |
| 11 | |
| 12 | /* A generic (mechanism independent) Cyrus SASL authenticator. */ |
| 13 | |
| 14 | |
| 15 | #include "../exim.h" |
| 16 | |
| 17 | |
| 18 | /* We can't just compile this code and allow the library mechanism to omit the |
| 19 | functions if they are not wanted, because we need to have the Cyrus SASL header |
| 20 | available for compiling. Therefore, compile these functions only if |
| 21 | AUTH_CYRUS_SASL is defined. However, some compilers don't like compiling empty |
| 22 | modules, so keep them happy with a dummy when skipping the rest. Make it |
| 23 | reference itself to stop picky compilers complaining that it is unused, and put |
| 24 | in a dummy argument to stop even pickier compilers complaining about infinite |
| 25 | loops. */ |
| 26 | |
| 27 | #ifndef AUTH_CYRUS_SASL |
| 28 | static void dummy(int x); |
| 29 | static void dummy2(int x) { dummy(x-1); } |
| 30 | static void dummy(int x) { dummy2(x-1); } |
| 31 | #else |
| 32 | |
| 33 | |
| 34 | #include <sasl/sasl.h> |
| 35 | #include "cyrus_sasl.h" |
| 36 | |
| 37 | /* Options specific to the cyrus_sasl authentication mechanism. */ |
| 38 | |
| 39 | optionlist auth_cyrus_sasl_options[] = { |
| 40 | { "server_hostname", opt_stringptr, |
| 41 | (void *)(offsetof(auth_cyrus_sasl_options_block, server_hostname)) }, |
| 42 | { "server_mech", opt_stringptr, |
| 43 | (void *)(offsetof(auth_cyrus_sasl_options_block, server_mech)) }, |
| 44 | { "server_realm", opt_stringptr, |
| 45 | (void *)(offsetof(auth_cyrus_sasl_options_block, server_realm)) }, |
| 46 | { "server_service", opt_stringptr, |
| 47 | (void *)(offsetof(auth_cyrus_sasl_options_block, server_service)) } |
| 48 | }; |
| 49 | |
| 50 | /* Size of the options list. An extern variable has to be used so that its |
| 51 | address can appear in the tables drtables.c. */ |
| 52 | |
| 53 | int auth_cyrus_sasl_options_count = |
| 54 | sizeof(auth_cyrus_sasl_options)/sizeof(optionlist); |
| 55 | |
| 56 | /* Default private options block for the cyrus_sasl authentication method. */ |
| 57 | |
| 58 | auth_cyrus_sasl_options_block auth_cyrus_sasl_option_defaults = { |
| 59 | US"smtp", /* server_service */ |
| 60 | US"$primary_hostname", /* server_hostname */ |
| 61 | NULL, /* server_realm */ |
| 62 | NULL /* server_mech */ |
| 63 | }; |
| 64 | |
| 65 | |
| 66 | #ifdef MACRO_PREDEF |
| 67 | |
| 68 | /* Dummy values */ |
| 69 | void auth_cyrus_sasl_init(auth_instance *ablock) {} |
| 70 | int auth_cyrus_sasl_server(auth_instance *ablock, uschar *data) {return 0;} |
| 71 | int auth_cyrus_sasl_client(auth_instance *ablock, void * sx, |
| 72 | int timeout, uschar *buffer, int buffsize) {return 0;} |
| 73 | void auth_cyrus_sasl_version_report(FILE *f) {} |
| 74 | |
| 75 | #else /*!MACRO_PREDEF*/ |
| 76 | |
| 77 | |
| 78 | |
| 79 | |
| 80 | /************************************************* |
| 81 | * Initialization entry point * |
| 82 | *************************************************/ |
| 83 | |
| 84 | /* Called for each instance, after its options have been read, to |
| 85 | enable consistency checks to be done, or anything else that needs |
| 86 | to be set up. */ |
| 87 | |
| 88 | |
| 89 | /* Auxiliary function, passed in data to sasl_server_init(). */ |
| 90 | |
| 91 | static int |
| 92 | mysasl_config(void *context, |
| 93 | const char *plugin_name, |
| 94 | const char *option, |
| 95 | const char **result, |
| 96 | unsigned int *len) |
| 97 | { |
| 98 | if (context && !strcmp(option, "mech_list")) |
| 99 | { |
| 100 | *result = context; |
| 101 | if (len != NULL) *len = strlen(*result); |
| 102 | return SASL_OK; |
| 103 | } |
| 104 | return SASL_FAIL; |
| 105 | } |
| 106 | |
| 107 | /* Here's the real function */ |
| 108 | |
| 109 | void |
| 110 | auth_cyrus_sasl_init(auth_instance *ablock) |
| 111 | { |
| 112 | auth_cyrus_sasl_options_block *ob = |
| 113 | (auth_cyrus_sasl_options_block *)(ablock->options_block); |
| 114 | const uschar *list, *listptr, *buffer; |
| 115 | int rc, i; |
| 116 | unsigned int len; |
| 117 | uschar *rs_point, *expanded_hostname; |
| 118 | char *realm_expanded; |
| 119 | |
| 120 | sasl_conn_t *conn; |
| 121 | sasl_callback_t cbs[] = { |
| 122 | {SASL_CB_GETOPT, NULL, NULL }, |
| 123 | {SASL_CB_LIST_END, NULL, NULL}}; |
| 124 | |
| 125 | /* default the mechanism to our "public name" */ |
| 126 | if (ob->server_mech == NULL) |
| 127 | ob->server_mech = string_copy(ablock->public_name); |
| 128 | |
| 129 | expanded_hostname = expand_string(ob->server_hostname); |
| 130 | if (expanded_hostname == NULL) |
| 131 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 132 | "couldn't expand server_hostname [%s]: %s", |
| 133 | ablock->name, ob->server_hostname, expand_string_message); |
| 134 | |
| 135 | realm_expanded = NULL; |
| 136 | if (ob->server_realm != NULL) { |
| 137 | realm_expanded = CS expand_string(ob->server_realm); |
| 138 | if (realm_expanded == NULL) |
| 139 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 140 | "couldn't expand server_realm [%s]: %s", |
| 141 | ablock->name, ob->server_realm, expand_string_message); |
| 142 | } |
| 143 | |
| 144 | /* we're going to initialise the library to check that there is an |
| 145 | * authenticator of type whatever mechanism we're using |
| 146 | */ |
| 147 | |
| 148 | cbs[0].proc = (int(*)(void)) &mysasl_config; |
| 149 | cbs[0].context = ob->server_mech; |
| 150 | |
| 151 | if ((rc = sasl_server_init(cbs, "exim")) != SASL_OK ) |
| 152 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 153 | "couldn't initialise Cyrus SASL library.", ablock->name); |
| 154 | |
| 155 | if ((rc = sasl_server_new(CS ob->server_service, CS expanded_hostname, |
| 156 | realm_expanded, NULL, NULL, NULL, 0, &conn)) != SASL_OK ) |
| 157 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 158 | "couldn't initialise Cyrus SASL server connection.", ablock->name); |
| 159 | |
| 160 | if ((rc = sasl_listmech(conn, NULL, "", ":", "", (const char **)&list, &len, &i)) != SASL_OK ) |
| 161 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 162 | "couldn't get Cyrus SASL mechanism list.", ablock->name); |
| 163 | |
| 164 | i = ':'; |
| 165 | listptr = list; |
| 166 | |
| 167 | HDEBUG(D_auth) |
| 168 | { |
| 169 | debug_printf("Initialised Cyrus SASL service=\"%s\" fqdn=\"%s\" realm=\"%s\"\n", |
| 170 | ob->server_service, expanded_hostname, realm_expanded); |
| 171 | debug_printf("Cyrus SASL knows mechanisms: %s\n", list); |
| 172 | } |
| 173 | |
| 174 | /* the store_get / store_reset mechanism is hierarchical |
| 175 | * the hierarchy is stored for us behind our back. This point |
| 176 | * creates a hierarchy point for this function. |
| 177 | */ |
| 178 | rs_point = store_get(0); |
| 179 | |
| 180 | /* loop until either we get to the end of the list, or we match the |
| 181 | * public name of this authenticator |
| 182 | */ |
| 183 | while ( ( buffer = string_nextinlist(&listptr, &i, NULL, 0) ) && |
| 184 | strcmpic(buffer,ob->server_mech) ); |
| 185 | |
| 186 | if (!buffer) |
| 187 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 188 | "Cyrus SASL doesn't know about mechanism %s.", ablock->name, ob->server_mech); |
| 189 | |
| 190 | store_reset(rs_point); |
| 191 | |
| 192 | HDEBUG(D_auth) debug_printf("Cyrus SASL driver %s: %s initialised\n", ablock->name, ablock->public_name); |
| 193 | |
| 194 | /* make sure that if we get here then we're allowed to advertise. */ |
| 195 | ablock->server = TRUE; |
| 196 | |
| 197 | sasl_dispose(&conn); |
| 198 | sasl_done(); |
| 199 | } |
| 200 | |
| 201 | /************************************************* |
| 202 | * Server entry point * |
| 203 | *************************************************/ |
| 204 | |
| 205 | /* For interface, see auths/README */ |
| 206 | |
| 207 | /* note, we don't care too much about memory allocation in this, because this is entirely |
| 208 | * within a shortlived child |
| 209 | */ |
| 210 | |
| 211 | int |
| 212 | auth_cyrus_sasl_server(auth_instance *ablock, uschar *data) |
| 213 | { |
| 214 | auth_cyrus_sasl_options_block *ob = |
| 215 | (auth_cyrus_sasl_options_block *)(ablock->options_block); |
| 216 | uschar *output, *out2, *input, *clear, *hname; |
| 217 | uschar *debug = NULL; /* Stops compiler complaining */ |
| 218 | sasl_callback_t cbs[] = {{SASL_CB_LIST_END, NULL, NULL}}; |
| 219 | sasl_conn_t *conn; |
| 220 | char * realm_expanded = NULL; |
| 221 | int rc, i, firsttime = 1, clen, *negotiated_ssf_ptr = NULL, negotiated_ssf; |
| 222 | unsigned int inlen, outlen; |
| 223 | |
| 224 | input = data; |
| 225 | inlen = Ustrlen(data); |
| 226 | |
| 227 | HDEBUG(D_auth) debug = string_copy(data); |
| 228 | |
| 229 | hname = expand_string(ob->server_hostname); |
| 230 | if (hname && ob->server_realm) |
| 231 | realm_expanded = CS expand_string(ob->server_realm); |
| 232 | if (!hname || !realm_expanded && ob->server_realm) |
| 233 | { |
| 234 | auth_defer_msg = expand_string_message; |
| 235 | return DEFER; |
| 236 | } |
| 237 | |
| 238 | if (inlen) |
| 239 | { |
| 240 | if ((clen = b64decode(input, &clear)) < 0) |
| 241 | return BAD64; |
| 242 | input = clear; |
| 243 | inlen = clen; |
| 244 | } |
| 245 | |
| 246 | if ((rc = sasl_server_init(cbs, "exim")) != SASL_OK) |
| 247 | { |
| 248 | auth_defer_msg = US"couldn't initialise Cyrus SASL library"; |
| 249 | return DEFER; |
| 250 | } |
| 251 | |
| 252 | rc = sasl_server_new(CS ob->server_service, CS hname, realm_expanded, NULL, |
| 253 | NULL, NULL, 0, &conn); |
| 254 | |
| 255 | HDEBUG(D_auth) |
| 256 | debug_printf("Initialised Cyrus SASL server connection; service=\"%s\" fqdn=\"%s\" realm=\"%s\"\n", |
| 257 | ob->server_service, hname, realm_expanded); |
| 258 | |
| 259 | if (rc != SASL_OK ) |
| 260 | { |
| 261 | auth_defer_msg = US"couldn't initialise Cyrus SASL connection"; |
| 262 | sasl_done(); |
| 263 | return DEFER; |
| 264 | } |
| 265 | |
| 266 | if (tls_in.cipher) |
| 267 | { |
| 268 | if ((rc = sasl_setprop(conn, SASL_SSF_EXTERNAL, (sasl_ssf_t *) &tls_in.bits)) != SASL_OK) |
| 269 | { |
| 270 | HDEBUG(D_auth) debug_printf("Cyrus SASL EXTERNAL SSF set %d failed: %s\n", |
| 271 | tls_in.bits, sasl_errstring(rc, NULL, NULL)); |
| 272 | auth_defer_msg = US"couldn't set Cyrus SASL EXTERNAL SSF"; |
| 273 | sasl_done(); |
| 274 | return DEFER; |
| 275 | } |
| 276 | else |
| 277 | HDEBUG(D_auth) debug_printf("Cyrus SASL set EXTERNAL SSF to %d\n", tls_in.bits); |
| 278 | } |
| 279 | else |
| 280 | HDEBUG(D_auth) debug_printf("Cyrus SASL: no TLS, no EXTERNAL SSF set\n"); |
| 281 | |
| 282 | /* So sasl_setprop() documents non-shorted IPv6 addresses which is incredibly |
| 283 | annoying; looking at cyrus-imapd-2.3.x source, the IP address is constructed |
| 284 | with their iptostring() function, which just wraps |
| 285 | getnameinfo(..., NI_NUMERICHOST|NI_NUMERICSERV), which is equivalent to the |
| 286 | inet_ntop which we wrap in our host_ntoa() function. |
| 287 | |
| 288 | So the docs are too strict and we shouldn't worry about :: contractions. */ |
| 289 | |
| 290 | /* Set properties for remote and local host-ip;port */ |
| 291 | for (i = 0; i < 2; ++i) |
| 292 | { |
| 293 | struct sockaddr_storage ss; |
| 294 | int (*query)(int, struct sockaddr *, socklen_t *); |
| 295 | int propnum, port; |
| 296 | const uschar *label; |
| 297 | uschar *address, *address_port; |
| 298 | const char *s_err; |
| 299 | socklen_t sslen; |
| 300 | |
| 301 | if (i) |
| 302 | { |
| 303 | query = &getpeername; |
| 304 | propnum = SASL_IPREMOTEPORT; |
| 305 | label = CUS"peer"; |
| 306 | } |
| 307 | else |
| 308 | { |
| 309 | query = &getsockname; |
| 310 | propnum = SASL_IPLOCALPORT; |
| 311 | label = CUS"local"; |
| 312 | } |
| 313 | |
| 314 | sslen = sizeof(ss); |
| 315 | if ((rc = query(fileno(smtp_in), (struct sockaddr *) &ss, &sslen)) < 0) |
| 316 | { |
| 317 | HDEBUG(D_auth) |
| 318 | debug_printf("Failed to get %s address information: %s\n", |
| 319 | label, strerror(errno)); |
| 320 | break; |
| 321 | } |
| 322 | |
| 323 | address = host_ntoa(-1, &ss, NULL, &port); |
| 324 | address_port = string_sprintf("%s;%d", address, port); |
| 325 | |
| 326 | if ((rc = sasl_setprop(conn, propnum, address_port)) != SASL_OK) |
| 327 | { |
| 328 | s_err = sasl_errdetail(conn); |
| 329 | HDEBUG(D_auth) |
| 330 | debug_printf("Failed to set %s SASL property: [%d] %s\n", |
| 331 | label, rc, s_err ? s_err : "<unknown reason>"); |
| 332 | break; |
| 333 | } |
| 334 | HDEBUG(D_auth) debug_printf("Cyrus SASL set %s hostport to: %s\n", |
| 335 | label, address_port); |
| 336 | } |
| 337 | |
| 338 | for (rc = SASL_CONTINUE; rc == SASL_CONTINUE; ) |
| 339 | { |
| 340 | if (firsttime) |
| 341 | { |
| 342 | firsttime = 0; |
| 343 | HDEBUG(D_auth) debug_printf("Calling sasl_server_start(%s,\"%s\")\n", ob->server_mech, debug); |
| 344 | rc = sasl_server_start(conn, CS ob->server_mech, inlen?CS input:NULL, inlen, |
| 345 | (const char **)(&output), &outlen); |
| 346 | } |
| 347 | else |
| 348 | { |
| 349 | /* make sure that we have a null-terminated string */ |
| 350 | out2 = string_copyn(output, outlen); |
| 351 | |
| 352 | if ((rc = auth_get_data(&input, out2, outlen)) != OK) |
| 353 | { |
| 354 | /* we couldn't get the data, so free up the library before |
| 355 | * returning whatever error we get */ |
| 356 | sasl_dispose(&conn); |
| 357 | sasl_done(); |
| 358 | return rc; |
| 359 | } |
| 360 | inlen = Ustrlen(input); |
| 361 | |
| 362 | HDEBUG(D_auth) debug = string_copy(input); |
| 363 | if (inlen) |
| 364 | { |
| 365 | if ((clen = b64decode(input, &clear)) < 0) |
| 366 | { |
| 367 | sasl_dispose(&conn); |
| 368 | sasl_done(); |
| 369 | return BAD64; |
| 370 | } |
| 371 | input = clear; |
| 372 | inlen = clen; |
| 373 | } |
| 374 | |
| 375 | HDEBUG(D_auth) debug_printf("Calling sasl_server_step(\"%s\")\n", debug); |
| 376 | rc = sasl_server_step(conn, CS input, inlen, (const char **)(&output), &outlen); |
| 377 | } |
| 378 | |
| 379 | if (rc == SASL_BADPROT) |
| 380 | { |
| 381 | sasl_dispose(&conn); |
| 382 | sasl_done(); |
| 383 | return UNEXPECTED; |
| 384 | } |
| 385 | if (rc == SASL_CONTINUE) |
| 386 | continue; |
| 387 | |
| 388 | /* Get the username and copy it into $auth1 and $1. The former is now the |
| 389 | preferred variable; the latter is the original variable. */ |
| 390 | |
| 391 | if ((sasl_getprop(conn, SASL_USERNAME, (const void **)(&out2))) != SASL_OK) |
| 392 | { |
| 393 | HDEBUG(D_auth) |
| 394 | debug_printf("Cyrus SASL library will not tell us the username: %s\n", |
| 395 | sasl_errstring(rc, NULL, NULL)); |
| 396 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 397 | "Cyrus SASL username fetch problem: %s", ablock->name, ob->server_mech, |
| 398 | sasl_errstring(rc, NULL, NULL)); |
| 399 | sasl_dispose(&conn); |
| 400 | sasl_done(); |
| 401 | return FAIL; |
| 402 | } |
| 403 | auth_vars[0] = expand_nstring[1] = string_copy(out2); |
| 404 | expand_nlength[1] = Ustrlen(out2); |
| 405 | expand_nmax = 1; |
| 406 | |
| 407 | switch (rc) |
| 408 | { |
| 409 | case SASL_FAIL: case SASL_BUFOVER: case SASL_BADMAC: case SASL_BADAUTH: |
| 410 | case SASL_NOAUTHZ: case SASL_ENCRYPT: case SASL_EXPIRED: |
| 411 | case SASL_DISABLED: case SASL_NOUSER: |
| 412 | /* these are considered permanent failure codes */ |
| 413 | HDEBUG(D_auth) |
| 414 | debug_printf("Cyrus SASL permanent failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); |
| 415 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 416 | "Cyrus SASL permanent failure: %s", ablock->name, ob->server_mech, |
| 417 | sasl_errstring(rc, NULL, NULL)); |
| 418 | sasl_dispose(&conn); |
| 419 | sasl_done(); |
| 420 | return FAIL; |
| 421 | |
| 422 | case SASL_NOMECH: |
| 423 | /* this is a temporary failure, because the mechanism is not |
| 424 | * available for this user. If it wasn't available at all, we |
| 425 | * shouldn't have got here in the first place... |
| 426 | */ |
| 427 | HDEBUG(D_auth) |
| 428 | debug_printf("Cyrus SASL temporary failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); |
| 429 | auth_defer_msg = |
| 430 | string_sprintf("Cyrus SASL: mechanism %s not available", ob->server_mech); |
| 431 | sasl_dispose(&conn); |
| 432 | sasl_done(); |
| 433 | return DEFER; |
| 434 | |
| 435 | case SASL_OK: |
| 436 | HDEBUG(D_auth) |
| 437 | debug_printf("Cyrus SASL %s authentication succeeded for %s\n", |
| 438 | ob->server_mech, auth_vars[0]); |
| 439 | |
| 440 | if ((rc = sasl_getprop(conn, SASL_SSF, (const void **)(&negotiated_ssf_ptr)))!= SASL_OK) |
| 441 | { |
| 442 | HDEBUG(D_auth) |
| 443 | debug_printf("Cyrus SASL library will not tell us the SSF: %s\n", |
| 444 | sasl_errstring(rc, NULL, NULL)); |
| 445 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 446 | "Cyrus SASL SSF value not available: %s", ablock->name, ob->server_mech, |
| 447 | sasl_errstring(rc, NULL, NULL)); |
| 448 | sasl_dispose(&conn); |
| 449 | sasl_done(); |
| 450 | return FAIL; |
| 451 | } |
| 452 | negotiated_ssf = *negotiated_ssf_ptr; |
| 453 | HDEBUG(D_auth) |
| 454 | debug_printf("Cyrus SASL %s negotiated SSF: %d\n", ob->server_mech, negotiated_ssf); |
| 455 | if (negotiated_ssf > 0) |
| 456 | { |
| 457 | HDEBUG(D_auth) |
| 458 | debug_printf("Exim does not implement SASL wrapping (needed for SSF %d).\n", negotiated_ssf); |
| 459 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 460 | "Cyrus SASL SSF %d not supported by Exim", ablock->name, ob->server_mech, negotiated_ssf); |
| 461 | sasl_dispose(&conn); |
| 462 | sasl_done(); |
| 463 | return FAIL; |
| 464 | } |
| 465 | |
| 466 | /* close down the connection, freeing up library's memory */ |
| 467 | sasl_dispose(&conn); |
| 468 | sasl_done(); |
| 469 | |
| 470 | /* Expand server_condition as an authorization check */ |
| 471 | return auth_check_serv_cond(ablock); |
| 472 | |
| 473 | default: |
| 474 | /* Anything else is a temporary failure, and we'll let SASL print out |
| 475 | * the error string for us |
| 476 | */ |
| 477 | HDEBUG(D_auth) |
| 478 | debug_printf("Cyrus SASL temporary failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); |
| 479 | auth_defer_msg = |
| 480 | string_sprintf("Cyrus SASL: %s", sasl_errstring(rc, NULL, NULL)); |
| 481 | sasl_dispose(&conn); |
| 482 | sasl_done(); |
| 483 | return DEFER; |
| 484 | } |
| 485 | } |
| 486 | /* NOTREACHED */ |
| 487 | return 0; /* Stop compiler complaints */ |
| 488 | } |
| 489 | |
| 490 | /************************************************* |
| 491 | * Diagnostic API * |
| 492 | *************************************************/ |
| 493 | |
| 494 | void |
| 495 | auth_cyrus_sasl_version_report(FILE *f) |
| 496 | { |
| 497 | const char *implementation, *version; |
| 498 | sasl_version_info(&implementation, &version, NULL, NULL, NULL, NULL); |
| 499 | fprintf(f, "Library version: Cyrus SASL: Compile: %d.%d.%d\n" |
| 500 | " Runtime: %s [%s]\n", |
| 501 | SASL_VERSION_MAJOR, SASL_VERSION_MINOR, SASL_VERSION_STEP, |
| 502 | version, implementation); |
| 503 | } |
| 504 | |
| 505 | /************************************************* |
| 506 | * Client entry point * |
| 507 | *************************************************/ |
| 508 | |
| 509 | /* For interface, see auths/README */ |
| 510 | |
| 511 | int |
| 512 | auth_cyrus_sasl_client( |
| 513 | auth_instance *ablock, /* authenticator block */ |
| 514 | void * sx, /* connexction */ |
| 515 | int timeout, /* command timeout */ |
| 516 | uschar *buffer, /* for reading response */ |
| 517 | int buffsize) /* size of buffer */ |
| 518 | { |
| 519 | /* We don't support clients (yet) in this implementation of cyrus_sasl */ |
| 520 | return FAIL; |
| 521 | } |
| 522 | |
| 523 | #endif /*!MACRO_PREDEF*/ |
| 524 | #endif /* AUTH_CYRUS_SASL */ |
| 525 | |
| 526 | /* End of cyrus_sasl.c */ |