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0756eb3c PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
bfe645c1 | 5 | /* Copyright (c) University of Cambridge 1995 - 2015 */ |
0756eb3c PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
c5ddb310 | 8 | /* This code was originally contributed by Matthew Byng-Maddick */ |
0756eb3c PH |
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 | |
e1d15f5e JH |
28 | static void dummy(int x); |
29 | static void dummy2(int x) { dummy(x-1); } | |
30 | static void dummy(int x) { dummy2(x-1); } | |
0756eb3c PH |
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 | ||
16ff981e | 56 | /* Default private options block for the cyrus_sasl authentication method. */ |
0756eb3c PH |
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 | /************************************************* | |
67 | * Initialization entry point * | |
68 | *************************************************/ | |
69 | ||
70 | /* Called for each instance, after its options have been read, to | |
71 | enable consistency checks to be done, or anything else that needs | |
72 | to be set up. */ | |
73 | ||
c5ddb310 PH |
74 | |
75 | /* Auxiliary function, passed in data to sasl_server_init(). */ | |
76 | ||
77 | static int | |
78 | mysasl_config(void *context, | |
79 | const char *plugin_name, | |
80 | const char *option, | |
81 | const char **result, | |
82 | unsigned int *len) | |
83 | { | |
84 | if (context && !strcmp(option, "mech_list")) | |
85 | { | |
86 | *result = context; | |
87 | if (len != NULL) *len = strlen(*result); | |
88 | return SASL_OK; | |
89 | } | |
90 | return SASL_FAIL; | |
91 | } | |
92 | ||
93 | /* Here's the real function */ | |
94 | ||
0756eb3c PH |
95 | void |
96 | auth_cyrus_sasl_init(auth_instance *ablock) | |
97 | { | |
98 | auth_cyrus_sasl_options_block *ob = | |
99 | (auth_cyrus_sasl_options_block *)(ablock->options_block); | |
bfe645c1 | 100 | const uschar *list, *listptr, *buffer; |
0756eb3c PH |
101 | int rc, i; |
102 | unsigned int len; | |
edc33b5f | 103 | uschar *rs_point, *expanded_hostname; |
4c287009 | 104 | char *realm_expanded; |
0756eb3c | 105 | |
c5ddb310 PH |
106 | sasl_conn_t *conn; |
107 | sasl_callback_t cbs[]={ | |
108 | {SASL_CB_GETOPT, NULL, NULL }, | |
109 | {SASL_CB_LIST_END, NULL, NULL}}; | |
110 | ||
0756eb3c PH |
111 | /* default the mechanism to our "public name" */ |
112 | if(ob->server_mech == NULL) | |
113 | ob->server_mech=string_copy(ablock->public_name); | |
114 | ||
edc33b5f PP |
115 | expanded_hostname = expand_string(ob->server_hostname); |
116 | if (expanded_hostname == NULL) | |
117 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " | |
118 | "couldn't expand server_hostname [%s]: %s", | |
119 | ablock->name, ob->server_hostname, expand_string_message); | |
120 | ||
4c287009 PP |
121 | realm_expanded=NULL; |
122 | if (ob->server_realm != NULL) { | |
123 | realm_expanded = CS expand_string(ob->server_realm); | |
124 | if (realm_expanded == NULL) | |
125 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " | |
126 | "couldn't expand server_realm [%s]: %s", | |
127 | ablock->name, ob->server_realm, expand_string_message); | |
128 | } | |
129 | ||
0756eb3c PH |
130 | /* we're going to initialise the library to check that there is an |
131 | * authenticator of type whatever mechanism we're using | |
132 | */ | |
c5ddb310 | 133 | |
edc33b5f | 134 | cbs[0].proc = (int(*)(void)) &mysasl_config; |
c5ddb310 PH |
135 | cbs[0].context = ob->server_mech; |
136 | ||
0756eb3c | 137 | rc=sasl_server_init(cbs, "exim"); |
c5ddb310 | 138 | |
0756eb3c PH |
139 | if( rc != SASL_OK ) |
140 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " | |
141 | "couldn't initialise Cyrus SASL library.", ablock->name); | |
142 | ||
edc33b5f | 143 | rc=sasl_server_new(CS ob->server_service, CS expanded_hostname, |
4c287009 | 144 | realm_expanded, NULL, NULL, NULL, 0, &conn); |
0756eb3c PH |
145 | if( rc != SASL_OK ) |
146 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " | |
147 | "couldn't initialise Cyrus SASL server connection.", ablock->name); | |
148 | ||
bfe645c1 | 149 | rc=sasl_listmech(conn, NULL, "", ":", "", (const char **)&list, &len, &i); |
0756eb3c PH |
150 | if( rc != SASL_OK ) |
151 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " | |
152 | "couldn't get Cyrus SASL mechanism list.", ablock->name); | |
153 | ||
154 | i=':'; | |
155 | listptr=list; | |
156 | ||
edc33b5f PP |
157 | HDEBUG(D_auth) { |
158 | debug_printf("Initialised Cyrus SASL service=\"%s\" fqdn=\"%s\" realm=\"%s\"\n", | |
4c287009 | 159 | ob->server_service, expanded_hostname, realm_expanded); |
edc33b5f PP |
160 | debug_printf("Cyrus SASL knows mechanisms: %s\n", list); |
161 | } | |
0756eb3c PH |
162 | |
163 | /* the store_get / store_reset mechanism is hierarchical | |
164 | * the hierarchy is stored for us behind our back. This point | |
165 | * creates a hierarchy point for this function. | |
166 | */ | |
167 | rs_point=store_get(0); | |
168 | ||
169 | /* loop until either we get to the end of the list, or we match the | |
170 | * public name of this authenticator | |
171 | */ | |
172 | while( ( buffer = string_nextinlist(&listptr, &i, NULL, 0) ) && | |
173 | strcmpic(buffer,ob->server_mech) ); | |
174 | ||
175 | if(!buffer) | |
176 | log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s authenticator: " | |
177 | "Cyrus SASL doesn't know about mechanism %s.", ablock->name, ob->server_mech); | |
178 | ||
179 | store_reset(rs_point); | |
180 | ||
181 | HDEBUG(D_auth) debug_printf("Cyrus SASL driver %s: %s initialised\n", ablock->name, ablock->public_name); | |
182 | ||
183 | /* make sure that if we get here then we're allowed to advertise. */ | |
184 | ablock->server = TRUE; | |
185 | ||
186 | sasl_dispose(&conn); | |
187 | sasl_done(); | |
188 | } | |
189 | ||
190 | /************************************************* | |
191 | * Server entry point * | |
192 | *************************************************/ | |
193 | ||
194 | /* For interface, see auths/README */ | |
195 | ||
196 | /* note, we don't care too much about memory allocation in this, because this is entirely | |
197 | * within a shortlived child | |
198 | */ | |
199 | ||
200 | int | |
201 | auth_cyrus_sasl_server(auth_instance *ablock, uschar *data) | |
202 | { | |
203 | auth_cyrus_sasl_options_block *ob = | |
204 | (auth_cyrus_sasl_options_block *)(ablock->options_block); | |
205 | uschar *output, *out2, *input, *clear, *hname; | |
206 | uschar *debug = NULL; /* Stops compiler complaining */ | |
207 | sasl_callback_t cbs[]={{SASL_CB_LIST_END, NULL, NULL}}; | |
208 | sasl_conn_t *conn; | |
4c287009 | 209 | char *realm_expanded; |
66645890 | 210 | int rc, i, firsttime=1, clen, *negotiated_ssf_ptr=NULL, negotiated_ssf; |
0756eb3c PH |
211 | unsigned int inlen, outlen; |
212 | ||
213 | input=data; | |
214 | inlen=Ustrlen(data); | |
215 | ||
216 | HDEBUG(D_auth) debug=string_copy(data); | |
217 | ||
218 | hname=expand_string(ob->server_hostname); | |
4c287009 PP |
219 | realm_expanded=NULL; |
220 | if (hname && ob->server_realm) | |
221 | realm_expanded= CS expand_string(ob->server_realm); | |
222 | if((hname == NULL) || | |
223 | ((realm_expanded == NULL) && (ob->server_realm != NULL))) | |
0756eb3c PH |
224 | { |
225 | auth_defer_msg = expand_string_message; | |
226 | return DEFER; | |
227 | } | |
228 | ||
229 | if(inlen) | |
230 | { | |
231 | clen=auth_b64decode(input, &clear); | |
232 | if(clen < 0) | |
233 | { | |
234 | return BAD64; | |
235 | } | |
236 | input=clear; | |
237 | inlen=clen; | |
238 | } | |
239 | ||
240 | rc=sasl_server_init(cbs, "exim"); | |
241 | if (rc != SASL_OK) | |
242 | { | |
243 | auth_defer_msg = US"couldn't initialise Cyrus SASL library"; | |
244 | return DEFER; | |
245 | } | |
246 | ||
4c287009 | 247 | rc=sasl_server_new(CS ob->server_service, CS hname, realm_expanded, NULL, |
acb1b346 PH |
248 | NULL, NULL, 0, &conn); |
249 | ||
edc33b5f PP |
250 | HDEBUG(D_auth) |
251 | debug_printf("Initialised Cyrus SASL server connection; service=\"%s\" fqdn=\"%s\" realm=\"%s\"\n", | |
4c287009 | 252 | ob->server_service, hname, realm_expanded); |
edc33b5f | 253 | |
0756eb3c PH |
254 | if( rc != SASL_OK ) |
255 | { | |
256 | auth_defer_msg = US"couldn't initialise Cyrus SASL connection"; | |
257 | sasl_done(); | |
258 | return DEFER; | |
259 | } | |
260 | ||
817d9f57 | 261 | if (tls_in.cipher) |
edc33b5f | 262 | { |
817d9f57 | 263 | rc = sasl_setprop(conn, SASL_SSF_EXTERNAL, (sasl_ssf_t *) &tls_in.bits); |
edc33b5f PP |
264 | if (rc != SASL_OK) |
265 | { | |
266 | HDEBUG(D_auth) debug_printf("Cyrus SASL EXTERNAL SSF set %d failed: %s\n", | |
817d9f57 | 267 | tls_in.bits, sasl_errstring(rc, NULL, NULL)); |
edc33b5f PP |
268 | auth_defer_msg = US"couldn't set Cyrus SASL EXTERNAL SSF"; |
269 | sasl_done(); | |
270 | return DEFER; | |
271 | } | |
272 | else | |
817d9f57 | 273 | HDEBUG(D_auth) debug_printf("Cyrus SASL set EXTERNAL SSF to %d\n", tls_in.bits); |
edc33b5f PP |
274 | } |
275 | else | |
276 | HDEBUG(D_auth) debug_printf("Cyrus SASL: no TLS, no EXTERNAL SSF set\n"); | |
277 | ||
66645890 PP |
278 | /* So sasl_setprop() documents non-shorted IPv6 addresses which is incredibly |
279 | annoying; looking at cyrus-imapd-2.3.x source, the IP address is constructed | |
280 | with their iptostring() function, which just wraps | |
281 | getnameinfo(..., NI_NUMERICHOST|NI_NUMERICSERV), which is equivalent to the | |
282 | inet_ntop which we wrap in our host_ntoa() function. | |
283 | ||
284 | So the docs are too strict and we shouldn't worry about :: contractions. */ | |
285 | ||
286 | /* Set properties for remote and local host-ip;port */ | |
287 | for (i=0; i < 2; ++i) | |
288 | { | |
289 | struct sockaddr_storage ss; | |
290 | int (*query)(int, struct sockaddr *, socklen_t *); | |
291 | int propnum, port; | |
292 | const uschar *label; | |
293 | uschar *address, *address_port; | |
294 | const char *s_err; | |
295 | socklen_t sslen; | |
296 | ||
297 | if (i) | |
298 | { | |
299 | query = &getpeername; | |
300 | propnum = SASL_IPREMOTEPORT; | |
301 | label = CUS"peer"; | |
302 | } | |
303 | else | |
304 | { | |
305 | query = &getsockname; | |
306 | propnum = SASL_IPLOCALPORT; | |
307 | label = CUS"local"; | |
308 | } | |
309 | ||
310 | sslen = sizeof(ss); | |
311 | rc = query(fileno(smtp_in), (struct sockaddr *) &ss, &sslen); | |
312 | if (rc < 0) | |
313 | { | |
314 | HDEBUG(D_auth) | |
315 | debug_printf("Failed to get %s address information: %s\n", | |
316 | label, strerror(errno)); | |
317 | break; | |
318 | } | |
319 | ||
320 | address = host_ntoa(-1, &ss, NULL, &port); | |
321 | address_port = string_sprintf("%s;%d", address, port); | |
322 | ||
323 | rc = sasl_setprop(conn, propnum, address_port); | |
324 | if (rc != SASL_OK) | |
325 | { | |
326 | s_err = sasl_errdetail(conn); | |
327 | HDEBUG(D_auth) | |
328 | debug_printf("Failed to set %s SASL property: [%d] %s\n", | |
329 | label, rc, s_err ? s_err : "<unknown reason>"); | |
330 | break; | |
331 | } | |
332 | HDEBUG(D_auth) debug_printf("Cyrus SASL set %s hostport to: %s\n", | |
333 | label, address_port); | |
334 | } | |
335 | ||
0756eb3c PH |
336 | rc=SASL_CONTINUE; |
337 | ||
338 | while(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=store_get(outlen+1); | |
351 | memcpy(out2,output,outlen); | |
352 | out2[outlen]='\0'; | |
353 | if((rc=auth_get_data(&input, out2, outlen))!=OK) | |
354 | { | |
355 | /* we couldn't get the data, so free up the library before | |
356 | * returning whatever error we get */ | |
357 | sasl_dispose(&conn); | |
358 | sasl_done(); | |
359 | return rc; | |
360 | } | |
361 | inlen=Ustrlen(input); | |
362 | ||
363 | HDEBUG(D_auth) debug=string_copy(input); | |
364 | if(inlen) | |
365 | { | |
366 | clen=auth_b64decode(input, &clear); | |
367 | if(clen < 0) | |
368 | { | |
369 | sasl_dispose(&conn); | |
370 | sasl_done(); | |
371 | return BAD64; | |
372 | } | |
373 | input=clear; | |
374 | inlen=clen; | |
375 | } | |
376 | ||
377 | HDEBUG(D_auth) debug_printf("Calling sasl_server_step(\"%s\")\n", debug); | |
378 | rc=sasl_server_step(conn, CS input, inlen, (const char **)(&output), &outlen); | |
379 | } | |
380 | if(rc==SASL_BADPROT) | |
381 | { | |
382 | sasl_dispose(&conn); | |
383 | sasl_done(); | |
384 | return UNEXPECTED; | |
385 | } | |
386 | else if( rc==SASL_FAIL || rc==SASL_BUFOVER | |
387 | || rc==SASL_BADMAC || rc==SASL_BADAUTH | |
388 | || rc==SASL_NOAUTHZ || rc==SASL_ENCRYPT | |
389 | || rc==SASL_EXPIRED || rc==SASL_DISABLED | |
390 | || rc==SASL_NOUSER ) | |
391 | { | |
392 | /* these are considered permanent failure codes */ | |
393 | HDEBUG(D_auth) | |
394 | debug_printf("Cyrus SASL permanent failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); | |
395 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " | |
396 | "Cyrus SASL permanent failure: %s", ablock->name, ob->server_mech, | |
397 | sasl_errstring(rc, NULL, NULL)); | |
398 | sasl_dispose(&conn); | |
399 | sasl_done(); | |
400 | return FAIL; | |
401 | } | |
402 | else if(rc==SASL_NOMECH) | |
403 | { | |
404 | /* this is a temporary failure, because the mechanism is not | |
405 | * available for this user. If it wasn't available at all, we | |
406 | * shouldn't have got here in the first place... | |
407 | */ | |
408 | HDEBUG(D_auth) | |
409 | debug_printf("Cyrus SASL temporary failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); | |
410 | auth_defer_msg = | |
411 | string_sprintf("Cyrus SASL: mechanism %s not available", ob->server_mech); | |
412 | sasl_dispose(&conn); | |
413 | sasl_done(); | |
414 | return DEFER; | |
415 | } | |
416 | else if(!(rc==SASL_OK || rc==SASL_CONTINUE)) | |
417 | { | |
418 | /* Anything else is a temporary failure, and we'll let SASL print out | |
419 | * the error string for us | |
420 | */ | |
421 | HDEBUG(D_auth) | |
422 | debug_printf("Cyrus SASL temporary failure %d (%s)\n", rc, sasl_errstring(rc, NULL, NULL)); | |
423 | auth_defer_msg = | |
424 | string_sprintf("Cyrus SASL: %s", sasl_errstring(rc, NULL, NULL)); | |
425 | sasl_dispose(&conn); | |
426 | sasl_done(); | |
427 | return DEFER; | |
428 | } | |
429 | else if(rc==SASL_OK) | |
430 | { | |
f78eb7c6 PH |
431 | /* Get the username and copy it into $auth1 and $1. The former is now the |
432 | preferred variable; the latter is the original variable. */ | |
433 | rc = sasl_getprop(conn, SASL_USERNAME, (const void **)(&out2)); | |
edc33b5f PP |
434 | if (rc != SASL_OK) |
435 | { | |
436 | HDEBUG(D_auth) | |
437 | debug_printf("Cyrus SASL library will not tell us the username: %s\n", | |
438 | sasl_errstring(rc, NULL, NULL)); | |
439 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " | |
440 | "Cyrus SASL username fetch problem: %s", ablock->name, ob->server_mech, | |
441 | sasl_errstring(rc, NULL, NULL)); | |
442 | sasl_dispose(&conn); | |
443 | sasl_done(); | |
444 | return FAIL; | |
445 | } | |
446 | ||
f78eb7c6 PH |
447 | auth_vars[0] = expand_nstring[1] = string_copy(out2); |
448 | expand_nlength[1] = Ustrlen(expand_nstring[1]); | |
449 | expand_nmax = 1; | |
0756eb3c PH |
450 | |
451 | HDEBUG(D_auth) | |
edc33b5f PP |
452 | debug_printf("Cyrus SASL %s authentication succeeded for %s\n", |
453 | ob->server_mech, auth_vars[0]); | |
454 | ||
16880d1a | 455 | rc = sasl_getprop(conn, SASL_SSF, (const void **)(&negotiated_ssf_ptr)); |
edc33b5f PP |
456 | if (rc != SASL_OK) |
457 | { | |
458 | HDEBUG(D_auth) | |
459 | debug_printf("Cyrus SASL library will not tell us the SSF: %s\n", | |
460 | sasl_errstring(rc, NULL, NULL)); | |
461 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " | |
462 | "Cyrus SASL SSF value not available: %s", ablock->name, ob->server_mech, | |
463 | sasl_errstring(rc, NULL, NULL)); | |
464 | sasl_dispose(&conn); | |
465 | sasl_done(); | |
466 | return FAIL; | |
467 | } | |
16880d1a | 468 | negotiated_ssf = *negotiated_ssf_ptr; |
edc33b5f PP |
469 | HDEBUG(D_auth) |
470 | debug_printf("Cyrus SASL %s negotiated SSF: %d\n", ob->server_mech, negotiated_ssf); | |
471 | if (negotiated_ssf > 0) | |
472 | { | |
473 | HDEBUG(D_auth) | |
474 | debug_printf("Exim does not implement SASL wrapping (needed for SSF %d).\n", negotiated_ssf); | |
475 | log_write(0, LOG_REJECT, "%s authenticator (%s):\n " | |
476 | "Cyrus SASL SSF %d not supported by Exim", ablock->name, ob->server_mech, negotiated_ssf); | |
477 | sasl_dispose(&conn); | |
478 | sasl_done(); | |
479 | return FAIL; | |
480 | } | |
481 | ||
0756eb3c PH |
482 | /* close down the connection, freeing up library's memory */ |
483 | sasl_dispose(&conn); | |
484 | sasl_done(); | |
16ff981e PH |
485 | |
486 | /* Expand server_condition as an authorization check */ | |
487 | return auth_check_serv_cond(ablock); | |
0756eb3c PH |
488 | } |
489 | } | |
490 | /* NOTREACHED */ | |
491 | return 0; /* Stop compiler complaints */ | |
492 | } | |
493 | ||
6545de78 PP |
494 | /************************************************* |
495 | * Diagnostic API * | |
496 | *************************************************/ | |
497 | ||
498 | void | |
499 | auth_cyrus_sasl_version_report(FILE *f) | |
500 | { | |
501 | const char *implementation, *version; | |
502 | sasl_version_info(&implementation, &version, NULL, NULL, NULL, NULL); | |
503 | fprintf(f, "Library version: Cyrus SASL: Compile: %d.%d.%d\n" | |
504 | " Runtime: %s [%s]\n", | |
505 | SASL_VERSION_MAJOR, SASL_VERSION_MINOR, SASL_VERSION_STEP, | |
506 | version, implementation); | |
507 | } | |
508 | ||
0756eb3c PH |
509 | /************************************************* |
510 | * Client entry point * | |
511 | *************************************************/ | |
512 | ||
513 | /* For interface, see auths/README */ | |
514 | ||
515 | int | |
516 | auth_cyrus_sasl_client( | |
517 | auth_instance *ablock, /* authenticator block */ | |
518 | smtp_inblock *inblock, /* input connection */ | |
519 | smtp_outblock *outblock, /* output connection */ | |
520 | int timeout, /* command timeout */ | |
521 | uschar *buffer, /* for reading response */ | |
522 | int buffsize) /* size of buffer */ | |
523 | { | |
524 | /* We don't support clients (yet) in this implementation of cyrus_sasl */ | |
525 | return FAIL; | |
526 | } | |
527 | ||
528 | #endif /* AUTH_CYRUS_SASL */ | |
529 | ||
530 | /* End of cyrus_sasl.c */ |