| 1 | /************************************************* |
| 2 | * Exim - an Internet mail transport agent * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
| 6 | /* Copyright (c) The Exim Maintainers 2020 */ |
| 7 | /* See the file NOTICE for conditions of use and distribution. */ |
| 8 | |
| 9 | /* This code was originally contributed by Matthew Byng-Maddick */ |
| 10 | |
| 11 | /* Copyright (c) A L Digital 2004 */ |
| 12 | |
| 13 | /* A generic (mechanism independent) Cyrus SASL authenticator. */ |
| 14 | |
| 15 | |
| 16 | #include "../exim.h" |
| 17 | |
| 18 | |
| 19 | /* We can't just compile this code and allow the library mechanism to omit the |
| 20 | functions if they are not wanted, because we need to have the Cyrus SASL header |
| 21 | available for compiling. Therefore, compile these functions only if |
| 22 | AUTH_CYRUS_SASL is defined. However, some compilers don't like compiling empty |
| 23 | modules, so keep them happy with a dummy when skipping the rest. Make it |
| 24 | reference itself to stop picky compilers complaining that it is unused, and put |
| 25 | in a dummy argument to stop even pickier compilers complaining about infinite |
| 26 | loops. */ |
| 27 | |
| 28 | #ifndef AUTH_CYRUS_SASL |
| 29 | static void dummy(int x); |
| 30 | static void dummy2(int x) { dummy(x-1); } |
| 31 | static void dummy(int x) { dummy2(x-1); } |
| 32 | #else |
| 33 | |
| 34 | |
| 35 | #include <sasl/sasl.h> |
| 36 | #include "cyrus_sasl.h" |
| 37 | |
| 38 | /* Options specific to the cyrus_sasl authentication mechanism. */ |
| 39 | |
| 40 | optionlist auth_cyrus_sasl_options[] = { |
| 41 | { "server_hostname", opt_stringptr, |
| 42 | OPT_OFF(auth_cyrus_sasl_options_block, server_hostname) }, |
| 43 | { "server_mech", opt_stringptr, |
| 44 | OPT_OFF(auth_cyrus_sasl_options_block, server_mech) }, |
| 45 | { "server_realm", opt_stringptr, |
| 46 | OPT_OFF(auth_cyrus_sasl_options_block, server_realm) }, |
| 47 | { "server_service", opt_stringptr, |
| 48 | OPT_OFF(auth_cyrus_sasl_options_block, server_service) } |
| 49 | }; |
| 50 | |
| 51 | /* Size of the options list. An extern variable has to be used so that its |
| 52 | address can appear in the tables drtables.c. */ |
| 53 | |
| 54 | int auth_cyrus_sasl_options_count = |
| 55 | sizeof(auth_cyrus_sasl_options)/sizeof(optionlist); |
| 56 | |
| 57 | /* Default private options block for the cyrus_sasl authentication method. */ |
| 58 | |
| 59 | auth_cyrus_sasl_options_block auth_cyrus_sasl_option_defaults = { |
| 60 | US"smtp", /* server_service */ |
| 61 | US"$primary_hostname", /* server_hostname */ |
| 62 | NULL, /* server_realm */ |
| 63 | NULL /* server_mech */ |
| 64 | }; |
| 65 | |
| 66 | |
| 67 | #ifdef MACRO_PREDEF |
| 68 | |
| 69 | /* Dummy values */ |
| 70 | void auth_cyrus_sasl_init(auth_instance *ablock) {} |
| 71 | int auth_cyrus_sasl_server(auth_instance *ablock, uschar *data) {return 0;} |
| 72 | int auth_cyrus_sasl_client(auth_instance *ablock, void * sx, |
| 73 | int timeout, uschar *buffer, int buffsize) {return 0;} |
| 74 | void auth_cyrus_sasl_version_report(FILE *f) {} |
| 75 | |
| 76 | #else /*!MACRO_PREDEF*/ |
| 77 | |
| 78 | |
| 79 | |
| 80 | |
| 81 | /************************************************* |
| 82 | * Initialization entry point * |
| 83 | *************************************************/ |
| 84 | |
| 85 | /* Called for each instance, after its options have been read, to |
| 86 | enable consistency checks to be done, or anything else that needs |
| 87 | to be set up. */ |
| 88 | |
| 89 | |
| 90 | /* Auxiliary function, passed in data to sasl_server_init(). */ |
| 91 | |
| 92 | static int |
| 93 | mysasl_config(void *context, const char *plugin_name, const char *option, |
| 94 | const char **result, unsigned int *len) |
| 95 | { |
| 96 | if (context && !strcmp(option, "mech_list")) |
| 97 | { |
| 98 | *result = context; |
| 99 | if (len) *len = strlen(*result); |
| 100 | return SASL_OK; |
| 101 | } |
| 102 | return SASL_FAIL; |
| 103 | } |
| 104 | |
| 105 | /* Here's the real function */ |
| 106 | |
| 107 | void |
| 108 | auth_cyrus_sasl_init(auth_instance *ablock) |
| 109 | { |
| 110 | auth_cyrus_sasl_options_block *ob = |
| 111 | (auth_cyrus_sasl_options_block *)(ablock->options_block); |
| 112 | const uschar *list, *listptr, *buffer; |
| 113 | int rc, i; |
| 114 | unsigned int len; |
| 115 | rmark rs_point; |
| 116 | uschar *expanded_hostname; |
| 117 | char *realm_expanded; |
| 118 | |
| 119 | sasl_conn_t *conn; |
| 120 | sasl_callback_t cbs[] = { |
| 121 | {SASL_CB_GETOPT, NULL, NULL }, |
| 122 | {SASL_CB_LIST_END, NULL, NULL}}; |
| 123 | |
| 124 | /* default the mechanism to our "public name" */ |
| 125 | |
| 126 | if (!ob->server_mech) ob->server_mech = string_copy(ablock->public_name); |
| 127 | |
| 128 | if (!(expanded_hostname = expand_string(ob->server_hostname))) |
| 129 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 130 | "couldn't expand server_hostname [%s]: %s", |
| 131 | ablock->name, ob->server_hostname, expand_string_message); |
| 132 | |
| 133 | realm_expanded = NULL; |
| 134 | if ( ob->server_realm |
| 135 | && !(realm_expanded = CS expand_string(ob->server_realm))) |
| 136 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 137 | "couldn't expand server_realm [%s]: %s", |
| 138 | ablock->name, ob->server_realm, expand_string_message); |
| 139 | |
| 140 | /* we're going to initialise the library to check that there is an |
| 141 | authenticator of type whatever mechanism we're using */ |
| 142 | |
| 143 | cbs[0].proc = (int(*)(void)) &mysasl_config; |
| 144 | cbs[0].context = ob->server_mech; |
| 145 | |
| 146 | if ((rc = sasl_server_init(cbs, "exim")) != SASL_OK) |
| 147 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 148 | "couldn't initialise Cyrus SASL library.", ablock->name); |
| 149 | |
| 150 | if ((rc = sasl_server_new(CS ob->server_service, CS expanded_hostname, |
| 151 | realm_expanded, NULL, NULL, NULL, 0, &conn)) != SASL_OK) |
| 152 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 153 | "couldn't initialise Cyrus SASL server connection.", ablock->name); |
| 154 | |
| 155 | if ((rc = sasl_listmech(conn, NULL, "", ":", "", CCSS &list, &len, &i)) != SASL_OK) |
| 156 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 157 | "couldn't get Cyrus SASL mechanism list.", ablock->name); |
| 158 | |
| 159 | i = ':'; |
| 160 | listptr = list; |
| 161 | |
| 162 | HDEBUG(D_auth) |
| 163 | { |
| 164 | debug_printf("Initialised Cyrus SASL service=\"%s\" fqdn=\"%s\" realm=\"%s\"\n", |
| 165 | ob->server_service, expanded_hostname, realm_expanded); |
| 166 | debug_printf("Cyrus SASL knows mechanisms: %s\n", list); |
| 167 | } |
| 168 | |
| 169 | /* the store_get / store_reset mechanism is hierarchical |
| 170 | the hierarchy is stored for us behind our back. This point |
| 171 | creates a hierarchy point for this function. */ |
| 172 | |
| 173 | rs_point = store_mark(); |
| 174 | |
| 175 | /* loop until either we get to the end of the list, or we match the |
| 176 | public name of this authenticator */ |
| 177 | |
| 178 | while ( (buffer = string_nextinlist(&listptr, &i, NULL, 0)) |
| 179 | && strcmpic(buffer,ob->server_mech) ); |
| 180 | |
| 181 | if (!buffer) |
| 182 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " |
| 183 | "Cyrus SASL doesn't know about mechanism %s.", ablock->name, ob->server_mech); |
| 184 | |
| 185 | store_reset(rs_point); |
| 186 | |
| 187 | HDEBUG(D_auth) debug_printf("Cyrus SASL driver %s: %s initialised\n", ablock->name, ablock->public_name); |
| 188 | |
| 189 | /* make sure that if we get here then we're allowed to advertise. */ |
| 190 | ablock->server = TRUE; |
| 191 | |
| 192 | sasl_dispose(&conn); |
| 193 | sasl_done(); |
| 194 | } |
| 195 | |
| 196 | /************************************************* |
| 197 | * Server entry point * |
| 198 | *************************************************/ |
| 199 | |
| 200 | /* For interface, see auths/README */ |
| 201 | |
| 202 | /* note, we don't care too much about memory allocation in this, because this is entirely |
| 203 | within a shortlived child */ |
| 204 | |
| 205 | int |
| 206 | auth_cyrus_sasl_server(auth_instance *ablock, uschar *data) |
| 207 | { |
| 208 | auth_cyrus_sasl_options_block *ob = |
| 209 | (auth_cyrus_sasl_options_block *)(ablock->options_block); |
| 210 | uschar *output, *out2, *input, *clear, *hname; |
| 211 | uschar *debug = NULL; /* Stops compiler complaining */ |
| 212 | sasl_callback_t cbs[] = {{SASL_CB_LIST_END, NULL, NULL}}; |
| 213 | sasl_conn_t *conn; |
| 214 | char * realm_expanded = NULL; |
| 215 | int rc, firsttime = 1, clen, *negotiated_ssf_ptr = NULL, negotiated_ssf; |
| 216 | unsigned int inlen, outlen; |
| 217 | |
| 218 | input = data; |
| 219 | inlen = Ustrlen(data); |
| 220 | |
| 221 | HDEBUG(D_auth) debug = string_copy(data); |
| 222 | |
| 223 | hname = expand_string(ob->server_hostname); |
| 224 | if (hname && ob->server_realm) |
| 225 | realm_expanded = CS expand_string(ob->server_realm); |
| 226 | if (!hname || !realm_expanded && ob->server_realm) |
| 227 | { |
| 228 | auth_defer_msg = expand_string_message; |
| 229 | return DEFER; |
| 230 | } |
| 231 | |
| 232 | if (inlen) |
| 233 | { |
| 234 | if ((clen = b64decode(input, &clear)) < 0) |
| 235 | return BAD64; |
| 236 | input = clear; |
| 237 | inlen = clen; |
| 238 | } |
| 239 | |
| 240 | if ((rc = sasl_server_init(cbs, "exim")) != SASL_OK) |
| 241 | { |
| 242 | auth_defer_msg = US"couldn't initialise Cyrus SASL library"; |
| 243 | return DEFER; |
| 244 | } |
| 245 | |
| 246 | rc = sasl_server_new(CS ob->server_service, CS hname, realm_expanded, NULL, |
| 247 | NULL, NULL, 0, &conn); |
| 248 | |
| 249 | HDEBUG(D_auth) |
| 250 | debug_printf("Initialised Cyrus SASL server connection; service=\"%s\" fqdn=\"%s\" realm=\"%s\"\n", |
| 251 | ob->server_service, hname, realm_expanded); |
| 252 | |
| 253 | if (rc != SASL_OK ) |
| 254 | { |
| 255 | auth_defer_msg = US"couldn't initialise Cyrus SASL connection"; |
| 256 | sasl_done(); |
| 257 | return DEFER; |
| 258 | } |
| 259 | |
| 260 | if (tls_in.cipher) |
| 261 | { |
| 262 | if ((rc = sasl_setprop(conn, SASL_SSF_EXTERNAL, (sasl_ssf_t *) &tls_in.bits)) != SASL_OK) |
| 263 | { |
| 264 | HDEBUG(D_auth) debug_printf("Cyrus SASL EXTERNAL SSF set %d failed: %s\n", |
| 265 | tls_in.bits, sasl_errstring(rc, NULL, NULL)); |
| 266 | auth_defer_msg = US"couldn't set Cyrus SASL EXTERNAL SSF"; |
| 267 | sasl_done(); |
| 268 | return DEFER; |
| 269 | } |
| 270 | else |
| 271 | HDEBUG(D_auth) debug_printf("Cyrus SASL set EXTERNAL SSF to %d\n", tls_in.bits); |
| 272 | |
| 273 | /*XXX Set channel-binding here with sasl_channel_binding_t / SASL_CHANNEL_BINDING |
| 274 | Unclear what the "name" element does though, ditto the "critical" flag. */ |
| 275 | } |
| 276 | else |
| 277 | HDEBUG(D_auth) debug_printf("Cyrus SASL: no TLS, no EXTERNAL SSF set\n"); |
| 278 | |
| 279 | /* So sasl_setprop() documents non-shorted IPv6 addresses which is incredibly |
| 280 | annoying; looking at cyrus-imapd-2.3.x source, the IP address is constructed |
| 281 | with their iptostring() function, which just wraps |
| 282 | getnameinfo(..., NI_NUMERICHOST|NI_NUMERICSERV), which is equivalent to the |
| 283 | inet_ntop which we wrap in our host_ntoa() function. |
| 284 | |
| 285 | So the docs are too strict and we shouldn't worry about :: contractions. */ |
| 286 | |
| 287 | /* Set properties for remote and local host-ip;port */ |
| 288 | for (int i = 0; i < 2; ++i) |
| 289 | { |
| 290 | int propnum; |
| 291 | const uschar * label; |
| 292 | uschar * address_port; |
| 293 | const char *s_err; |
| 294 | |
| 295 | if (i) |
| 296 | { |
| 297 | propnum = SASL_IPREMOTEPORT; |
| 298 | label = CUS"peer"; |
| 299 | address_port = string_sprintf("%s;%d", |
| 300 | sender_host_address, sender_host_port); |
| 301 | } |
| 302 | else |
| 303 | { |
| 304 | propnum = SASL_IPLOCALPORT; |
| 305 | label = CUS"local"; |
| 306 | address_port = string_sprintf("%s;%d", interface_address, interface_port); |
| 307 | } |
| 308 | |
| 309 | if ((rc = sasl_setprop(conn, propnum, address_port)) != SASL_OK) |
| 310 | { |
| 311 | HDEBUG(D_auth) |
| 312 | { |
| 313 | s_err = sasl_errdetail(conn); |
| 314 | debug_printf("Failed to set %s SASL property: [%d] %s\n", |
| 315 | label, rc, s_err ? s_err : "<unknown reason>"); |
| 316 | } |
| 317 | break; |
| 318 | } |
| 319 | HDEBUG(D_auth) debug_printf("Cyrus SASL set %s hostport to: %s\n", |
| 320 | label, address_port); |
| 321 | } |
| 322 | |
| 323 | for (rc = SASL_CONTINUE; rc == SASL_CONTINUE; ) |
| 324 | { |
| 325 | if (firsttime) |
| 326 | { |
| 327 | firsttime = 0; |
| 328 | HDEBUG(D_auth) debug_printf("Calling sasl_server_start(%s,\"%s\")\n", ob->server_mech, debug); |
| 329 | rc = sasl_server_start(conn, CS ob->server_mech, inlen ? CS input : NULL, inlen, |
| 330 | CCSS &output, &outlen); |
| 331 | } |
| 332 | else |
| 333 | { |
| 334 | /* auth_get_data() takes a length-specfied block of binary |
| 335 | which can include zeroes; no terminating NUL is needed */ |
| 336 | |
| 337 | if ((rc = auth_get_data(&input, output, outlen)) != OK) |
| 338 | { |
| 339 | /* we couldn't get the data, so free up the library before |
| 340 | returning whatever error we get */ |
| 341 | sasl_dispose(&conn); |
| 342 | sasl_done(); |
| 343 | return rc; |
| 344 | } |
| 345 | inlen = Ustrlen(input); |
| 346 | |
| 347 | HDEBUG(D_auth) debug = string_copy(input); |
| 348 | if (inlen) |
| 349 | { |
| 350 | if ((clen = b64decode(input, &clear)) < 0) |
| 351 | { |
| 352 | sasl_dispose(&conn); |
| 353 | sasl_done(); |
| 354 | return BAD64; |
| 355 | } |
| 356 | input = clear; |
| 357 | inlen = clen; |
| 358 | } |
| 359 | |
| 360 | HDEBUG(D_auth) debug_printf("Calling sasl_server_step(\"%s\")\n", debug); |
| 361 | rc = sasl_server_step(conn, CS input, inlen, CCSS &output, &outlen); |
| 362 | } |
| 363 | |
| 364 | if (rc == SASL_BADPROT) |
| 365 | { |
| 366 | sasl_dispose(&conn); |
| 367 | sasl_done(); |
| 368 | return UNEXPECTED; |
| 369 | } |
| 370 | if (rc == SASL_CONTINUE) |
| 371 | continue; |
| 372 | |
| 373 | /* Get the username and copy it into $auth1 and $1. The former is now the |
| 374 | preferred variable; the latter is the original variable. */ |
| 375 | |
| 376 | if ((sasl_getprop(conn, SASL_USERNAME, (const void **)&out2)) != SASL_OK) |
| 377 | { |
| 378 | HDEBUG(D_auth) |
| 379 | debug_printf("Cyrus SASL library will not tell us the username: %s\n", |
| 380 | sasl_errstring(rc, NULL, NULL)); |
| 381 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 382 | "Cyrus SASL username fetch problem: %s", ablock->name, ob->server_mech, |
| 383 | sasl_errstring(rc, NULL, NULL)); |
| 384 | sasl_dispose(&conn); |
| 385 | sasl_done(); |
| 386 | return FAIL; |
| 387 | } |
| 388 | auth_vars[0] = expand_nstring[1] = string_copy(out2); |
| 389 | expand_nlength[1] = Ustrlen(out2); |
| 390 | expand_nmax = 1; |
| 391 | |
| 392 | switch (rc) |
| 393 | { |
| 394 | case SASL_FAIL: case SASL_BUFOVER: case SASL_BADMAC: case SASL_BADAUTH: |
| 395 | case SASL_NOAUTHZ: case SASL_ENCRYPT: case SASL_EXPIRED: |
| 396 | case SASL_DISABLED: case SASL_NOUSER: |
| 397 | /* these are considered permanent failure codes */ |
| 398 | HDEBUG(D_auth) |
| 399 | debug_printf("Cyrus SASL permanent failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); |
| 400 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 401 | "Cyrus SASL permanent failure: %s", ablock->name, ob->server_mech, |
| 402 | sasl_errstring(rc, NULL, NULL)); |
| 403 | sasl_dispose(&conn); |
| 404 | sasl_done(); |
| 405 | return FAIL; |
| 406 | |
| 407 | case SASL_NOMECH: |
| 408 | /* this is a temporary failure, because the mechanism is not |
| 409 | available for this user. If it wasn't available at all, we |
| 410 | shouldn't have got here in the first place... */ |
| 411 | |
| 412 | HDEBUG(D_auth) |
| 413 | debug_printf("Cyrus SASL temporary failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); |
| 414 | auth_defer_msg = |
| 415 | string_sprintf("Cyrus SASL: mechanism %s not available", ob->server_mech); |
| 416 | sasl_dispose(&conn); |
| 417 | sasl_done(); |
| 418 | return DEFER; |
| 419 | |
| 420 | case SASL_OK: |
| 421 | HDEBUG(D_auth) |
| 422 | debug_printf("Cyrus SASL %s authentication succeeded for %s\n", |
| 423 | ob->server_mech, auth_vars[0]); |
| 424 | |
| 425 | if ((rc = sasl_getprop(conn, SASL_SSF, (const void **)(&negotiated_ssf_ptr)))!= SASL_OK) |
| 426 | { |
| 427 | HDEBUG(D_auth) |
| 428 | debug_printf("Cyrus SASL library will not tell us the SSF: %s\n", |
| 429 | sasl_errstring(rc, NULL, NULL)); |
| 430 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 431 | "Cyrus SASL SSF value not available: %s", ablock->name, ob->server_mech, |
| 432 | sasl_errstring(rc, NULL, NULL)); |
| 433 | sasl_dispose(&conn); |
| 434 | sasl_done(); |
| 435 | return FAIL; |
| 436 | } |
| 437 | negotiated_ssf = *negotiated_ssf_ptr; |
| 438 | HDEBUG(D_auth) |
| 439 | debug_printf("Cyrus SASL %s negotiated SSF: %d\n", ob->server_mech, negotiated_ssf); |
| 440 | if (negotiated_ssf > 0) |
| 441 | { |
| 442 | HDEBUG(D_auth) |
| 443 | debug_printf("Exim does not implement SASL wrapping (needed for SSF %d).\n", negotiated_ssf); |
| 444 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " |
| 445 | "Cyrus SASL SSF %d not supported by Exim", ablock->name, ob->server_mech, negotiated_ssf); |
| 446 | sasl_dispose(&conn); |
| 447 | sasl_done(); |
| 448 | return FAIL; |
| 449 | } |
| 450 | |
| 451 | /* close down the connection, freeing up library's memory */ |
| 452 | sasl_dispose(&conn); |
| 453 | sasl_done(); |
| 454 | |
| 455 | /* Expand server_condition as an authorization check */ |
| 456 | return auth_check_serv_cond(ablock); |
| 457 | |
| 458 | default: |
| 459 | /* Anything else is a temporary failure, and we'll let SASL print out |
| 460 | * the error string for us |
| 461 | */ |
| 462 | HDEBUG(D_auth) |
| 463 | debug_printf("Cyrus SASL temporary failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); |
| 464 | auth_defer_msg = |
| 465 | string_sprintf("Cyrus SASL: %s", sasl_errstring(rc, NULL, NULL)); |
| 466 | sasl_dispose(&conn); |
| 467 | sasl_done(); |
| 468 | return DEFER; |
| 469 | } |
| 470 | } |
| 471 | /* NOTREACHED */ |
| 472 | return 0; /* Stop compiler complaints */ |
| 473 | } |
| 474 | |
| 475 | /************************************************* |
| 476 | * Diagnostic API * |
| 477 | *************************************************/ |
| 478 | |
| 479 | void |
| 480 | auth_cyrus_sasl_version_report(FILE *f) |
| 481 | { |
| 482 | const char *implementation, *version; |
| 483 | sasl_version_info(&implementation, &version, NULL, NULL, NULL, NULL); |
| 484 | fprintf(f, "Library version: Cyrus SASL: Compile: %d.%d.%d\n" |
| 485 | " Runtime: %s [%s]\n", |
| 486 | SASL_VERSION_MAJOR, SASL_VERSION_MINOR, SASL_VERSION_STEP, |
| 487 | version, implementation); |
| 488 | } |
| 489 | |
| 490 | /************************************************* |
| 491 | * Client entry point * |
| 492 | *************************************************/ |
| 493 | |
| 494 | /* For interface, see auths/README */ |
| 495 | |
| 496 | int |
| 497 | auth_cyrus_sasl_client( |
| 498 | auth_instance *ablock, /* authenticator block */ |
| 499 | void * sx, /* connexction */ |
| 500 | int timeout, /* command timeout */ |
| 501 | uschar *buffer, /* for reading response */ |
| 502 | int buffsize) /* size of buffer */ |
| 503 | { |
| 504 | /* We don't support clients (yet) in this implementation of cyrus_sasl */ |
| 505 | return FAIL; |
| 506 | } |
| 507 | |
| 508 | #endif /*!MACRO_PREDEF*/ |
| 509 | #endif /* AUTH_CYRUS_SASL */ |
| 510 | |
| 511 | /* End of cyrus_sasl.c */ |