d9898ee8 |
1 | /* |
0fde1ce3 |
2 | ** Copyright 2000-2008 Double Precision, Inc. See COPYING for |
d9898ee8 |
3 | ** distribution information. |
4 | */ |
5 | |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | #include <string.h> |
9 | #include <unistd.h> |
10 | #include <ctype.h> |
11 | #include <sys/types.h> |
12 | #include <sys/stat.h> |
13 | #include <mysql.h> |
14 | #include <time.h> |
15 | |
16 | #include "authmysql.h" |
17 | #include "authmysqlrc.h" |
18 | #include "auth.h" |
19 | #include "courierauthdebug.h" |
20 | |
21 | #define err courier_auth_err |
22 | |
23 | /* siefca@pld.org.pl */ |
24 | #define MAX_SUBSTITUTION_LEN 32 |
25 | #define SV_BEGIN_MARK "$(" |
26 | #define SV_END_MARK ")" |
27 | #define SV_BEGIN_LEN ((sizeof(SV_BEGIN_MARK))-1) |
28 | #define SV_END_LEN ((sizeof(SV_END_MARK))-1) |
29 | |
0fde1ce3 |
30 | static const char rcsid[]="$Id: authmysqllib.c,v 1.49 2008/06/08 16:40:36 mrsam Exp $"; |
d9898ee8 |
31 | |
32 | /* siefca@pld.org.pl */ |
33 | struct var_data { |
34 | const char *name; |
35 | const char *value; |
36 | const size_t size; |
37 | size_t value_length; |
38 | } ; |
39 | |
40 | /* siefca@pld.org.pl */ |
41 | typedef int (*parsefunc)(const char *, size_t, void *); |
42 | |
43 | static const char *read_env(const char *env) |
44 | { |
45 | static char *mysqlauth=0; |
46 | static size_t mysqlauth_size=0; |
47 | size_t i; |
48 | char *p=0; |
49 | int l=strlen(env); |
50 | |
51 | if (!mysqlauth) |
52 | { |
53 | FILE *f=fopen(AUTHMYSQLRC, "r"); |
54 | struct stat buf; |
55 | |
56 | if (!f) return (0); |
57 | if (fstat(fileno(f), &buf) || |
58 | (mysqlauth=malloc(buf.st_size+2)) == 0) |
59 | { |
60 | fclose(f); |
61 | return (0); |
62 | } |
63 | if (fread(mysqlauth, buf.st_size, 1, f) != 1) |
64 | { |
65 | free(mysqlauth); |
66 | mysqlauth=0; |
67 | fclose(f); |
68 | return (0); |
69 | } |
70 | mysqlauth[mysqlauth_size=buf.st_size]=0; |
71 | |
72 | for (i=0; i<mysqlauth_size; i++) |
73 | if (mysqlauth[i] == '\n') |
74 | { /* siefca@pld.org.pl */ |
75 | if (!i || mysqlauth[i-1] != '\\') |
76 | { |
77 | mysqlauth[i]='\0'; |
78 | } |
79 | else |
80 | { |
81 | mysqlauth[i]=mysqlauth[i-1]= ' '; |
82 | } |
83 | } |
84 | fclose(f); |
85 | } |
86 | |
87 | for (i=0; i<mysqlauth_size; ) |
88 | { |
89 | p=mysqlauth+i; |
90 | if (memcmp(p, env, l) == 0 && |
91 | isspace((int)(unsigned char)p[l])) |
92 | { |
93 | p += l; |
94 | while (*p && *p != '\n' && |
95 | isspace((int)(unsigned char)*p)) |
96 | ++p; |
97 | break; |
98 | } |
99 | |
100 | while (i < mysqlauth_size) |
101 | if (mysqlauth[i++] == 0) break; |
102 | } |
103 | |
104 | if (i < mysqlauth_size) |
105 | return (p); |
106 | return (0); |
107 | } |
108 | |
109 | static MYSQL mysql_buf; |
110 | |
111 | static MYSQL *mysql=0; |
112 | |
0fde1ce3 |
113 | static void set_session_options(void) |
114 | /* |
115 | * session variables can be set once for the whole session |
116 | */ |
117 | { |
118 | /* Anton Dobkin <anton@viansib.ru>, VIAN, Ltd. */ |
119 | #if MYSQL_VERSION_ID >= 41000 |
120 | const char *character_set=read_env("MYSQL_CHARACTER_SET"), *check; |
121 | |
122 | if(character_set){ |
123 | |
124 | /* |
125 | * This function works like the SET NAMES statement, but also sets |
126 | * the value of mysql->charset, and thus affects the character set |
127 | * used by mysql_real_escape_string() |
128 | * |
129 | * (return value apparently work the opposite of what is documented) |
130 | */ |
131 | mysql_set_character_set(mysql, character_set); |
132 | check = mysql_character_set_name(mysql); |
133 | if (strcmp(character_set, check) != 0) |
134 | { |
135 | err("Cannot set MySQL character set \"%s\", working with \"%s\"\n", |
136 | character_set, check); |
137 | } |
138 | else |
139 | { |
140 | DPRINTF("Install of a character set for MySQL: %s", character_set); |
141 | } |
142 | } |
143 | #endif /* 41000 */ |
144 | } |
145 | |
d9898ee8 |
146 | static int do_connect() |
147 | { |
148 | const char *server; |
149 | const char *userid; |
150 | const char *password; |
151 | const char *database; |
152 | const char *server_socket=0; |
153 | unsigned int server_port=0; |
154 | unsigned int server_opt=0; |
155 | const char *p; |
156 | |
157 | const char *sslkey; |
158 | const char *sslcert; |
159 | const char *sslcacert; |
160 | const char *sslcapath; |
161 | const char *sslcipher; |
162 | unsigned int use_ssl=0; |
163 | |
164 | /* |
165 | ** Periodically detect dead connections. |
166 | */ |
167 | if (mysql) |
168 | { |
169 | static time_t last_time=0; |
170 | time_t t_check; |
171 | |
172 | time(&t_check); |
173 | |
174 | if (t_check < last_time) |
175 | last_time=t_check; /* System clock changed */ |
176 | |
177 | if (t_check < last_time + 60) |
178 | return (0); |
179 | |
180 | last_time=t_check; |
181 | |
182 | if (mysql_ping(mysql) == 0) return (0); |
183 | |
184 | DPRINTF("authmysqllib: mysql_ping failed, connection lost"); |
185 | mysql_close(mysql); |
186 | mysql=0; |
187 | } |
188 | |
189 | server=read_env("MYSQL_SERVER"); |
190 | userid=read_env("MYSQL_USERNAME"); |
191 | password=read_env("MYSQL_PASSWORD"); |
192 | database=read_env("MYSQL_DATABASE"); |
193 | |
194 | #if MYSQL_VERSION_ID >= 32200 |
195 | sslkey=read_env("MYSQL_SSL_KEY"); |
196 | sslcert=read_env("MYSQL_SSL_CERT"); |
197 | sslcacert=read_env("MYSQL_SSL_CACERT"); |
198 | sslcapath=read_env("MYSQL_SSL_CAPATH"); |
199 | sslcipher=read_env("MYSQL_SSL_CIPHER"); |
200 | |
201 | if ((sslcert != NULL) && ((sslcacert != NULL) || (sslcapath != NULL))) |
202 | { |
203 | use_ssl=1; |
204 | } |
205 | #endif |
206 | |
207 | server_socket=(char *) read_env("MYSQL_SOCKET"); |
208 | |
209 | if ((p=read_env("MYSQL_PORT")) != 0) |
210 | { |
211 | server_port=(unsigned int) atoi(p); |
212 | } |
213 | |
214 | if ((p=read_env("MYSQL_OPT")) != 0) |
215 | { |
216 | server_opt=(unsigned int) atol(p); |
217 | } |
218 | |
219 | if (!server && !server_socket) |
220 | { |
221 | err("authmysql: MYSQL_SERVER nor MYSQL_SOCKET set in" |
222 | AUTHMYSQLRC "."); |
223 | return (-1); |
224 | } |
225 | |
226 | if (!userid) |
227 | { |
228 | err("authmysql: MYSQL_USERNAME not set in " |
229 | AUTHMYSQLRC "."); |
230 | return (-1); |
231 | } |
232 | |
233 | if (!database) |
234 | { |
235 | err("authmysql: MYSQL_DATABASE not set in " |
236 | AUTHMYSQLRC "."); |
237 | return (-1); |
238 | } |
239 | |
240 | #if MYSQL_VERSION_ID >= 32200 |
241 | mysql_init(&mysql_buf); |
242 | if (use_ssl) |
243 | { |
244 | mysql_ssl_set(&mysql_buf, sslkey, sslcert, sslcacert, |
245 | sslcapath, sslcipher); |
246 | } |
247 | mysql=mysql_real_connect(&mysql_buf, server, userid, password, |
248 | NULL, |
249 | server_port, |
250 | server_socket, |
251 | server_opt); |
252 | #else |
253 | mysql=mysql_connect(&mysql_buf, server, userid, password); |
254 | #endif |
255 | if (!mysql) |
256 | { |
257 | err("failed to connect to mysql server (server=%s, userid=%s): %s", |
258 | server ? server : "<null>", |
259 | userid ? userid : "<null>", |
260 | mysql_error(&mysql_buf)); |
261 | return (-1); |
262 | } |
263 | |
264 | if (mysql_select_db(mysql, database)) |
265 | { |
266 | err("authmysql: mysql_select_db(%s) error: %s", |
267 | database, mysql_error(mysql)); |
268 | mysql_close(mysql); |
269 | mysql=0; |
270 | return (-1); |
271 | } |
0fde1ce3 |
272 | |
273 | DPRINTF("authmysqllib: connected. Versions: " |
274 | "header %lu, " |
275 | "client %lu, " |
276 | "server %lu", |
277 | (long)MYSQL_VERSION_ID, |
278 | mysql_get_client_version(), |
279 | mysql_get_server_version(mysql)); |
280 | |
281 | set_session_options(); |
d9898ee8 |
282 | return (0); |
283 | } |
284 | |
285 | void auth_mysql_cleanup() |
286 | { |
287 | if (mysql) |
288 | { |
289 | mysql_close(mysql); |
290 | mysql=0; |
291 | } |
292 | } |
293 | |
294 | static struct authmysqluserinfo ui={0, 0, 0, 0, 0, 0, 0, 0}; |
295 | |
296 | static void initui() |
297 | { |
298 | |
299 | if (ui.username) |
300 | free(ui.username); |
301 | if (ui.cryptpw) |
302 | free(ui.cryptpw); |
303 | if (ui.clearpw) |
304 | free(ui.clearpw); |
305 | if (ui.home) |
306 | free(ui.home); |
307 | if (ui.maildir) |
308 | free(ui.maildir); |
309 | if (ui.quota) |
310 | free(ui.quota); |
311 | if (ui.fullname) |
312 | free(ui.fullname); |
313 | if (ui.options) |
314 | free(ui.options); |
315 | memset(&ui, 0, sizeof(ui)); |
316 | } |
317 | |
d9898ee8 |
318 | /* siefca@pld.org.pl */ |
319 | static struct var_data *get_variable (const char *begin, size_t len, |
320 | struct var_data *vdt) |
321 | { |
322 | struct var_data *vdp; |
323 | |
324 | if (!begin || !vdt) /* should never happend */ |
325 | { |
326 | err("authmysql: critical error while " |
327 | "parsing substitution variable"); |
328 | return NULL; |
329 | } |
330 | if (len < 1) |
331 | { |
332 | err("authmysql: unknown empty substitution " |
333 | "variable - aborting"); |
334 | return NULL; |
335 | } |
336 | if (len > MAX_SUBSTITUTION_LEN) |
337 | { |
338 | err("authmysql: variable name too long " |
339 | "while parsing substitution. " |
340 | "name begins with " |
341 | SV_BEGIN_MARK |
342 | "%.*s...", MAX_SUBSTITUTION_LEN, begin); |
343 | return NULL; |
344 | } |
345 | |
346 | for (vdp=vdt; vdp->name; vdp++) |
347 | if (vdp->size == len+1 && |
348 | !strncmp(begin, vdp->name, len)) |
349 | { |
350 | if (!vdp->value) |
351 | vdp->value = ""; |
352 | if (!vdp->value_length) /* length cache */ |
353 | vdp->value_length = strlen (vdp->value); |
354 | return vdp; |
355 | } |
356 | |
357 | err("authmysql: unknown substitution variable " |
358 | SV_BEGIN_MARK |
359 | "%.*s" |
360 | SV_END_MARK |
361 | , (int)len, begin); |
362 | |
363 | return NULL; |
364 | } |
365 | |
366 | /* siefca@pld.org.pl */ |
367 | static int ParsePlugin_counter (const char *p, size_t length, void *vp) |
368 | { |
369 | if (!p || !vp || length < 0) |
370 | { |
371 | err("authmysql: bad arguments while counting " |
372 | "query string"); |
373 | return -1; |
374 | } |
375 | |
376 | *((size_t *)vp) += length; |
377 | |
378 | return 0; |
379 | } |
380 | |
381 | /* siefca@pld.org.pl */ |
382 | static int ParsePlugin_builder (const char *p, size_t length, void *vp) |
383 | { |
384 | char **strptr = (char **) vp; |
385 | |
386 | if (!p || !vp || length < 0) |
387 | { |
388 | err("authmysql: bad arguments while building " |
389 | "query string"); |
390 | return -1; |
391 | } |
392 | |
393 | if (!length) return 0; |
394 | memcpy ((void *) *strptr, (void *) p, length); |
395 | *strptr += length; |
396 | |
397 | return 0; |
398 | } |
399 | |
400 | /* siefca@pld.org.pl */ |
401 | static int parse_core (const char *source, struct var_data *vdt, |
402 | parsefunc outfn, void *result) |
403 | { |
404 | size_t v_size = 0, |
405 | t_size = 0; |
406 | const char *p, *q, *e, |
407 | *v_begin, *v_end, |
408 | *t_begin, *t_end; |
409 | struct var_data *v_ptr; |
410 | |
411 | if (!source) |
412 | source = ""; |
413 | if (!result) |
414 | { |
415 | err("authmysql: no memory allocated for result " |
416 | "while parser core was invoked"); |
417 | return -1; |
418 | } |
419 | if (!vdt) |
420 | { |
421 | err("authmysql: no substitution table found " |
422 | "while parser core was invoked"); |
423 | return -1; |
424 | } |
425 | |
426 | q = source; |
427 | while ( (p=strstr(q, SV_BEGIN_MARK)) ) |
428 | { |
429 | e = strstr (p, SV_END_MARK); |
430 | if (!e) |
431 | { |
432 | err("authmysql: syntax error in " |
433 | "substitution " |
434 | "- no closing symbol found! " |
435 | "bad variable begins with:" |
436 | "%.*s...", MAX_SUBSTITUTION_LEN, p); |
437 | return -1; |
438 | } |
439 | |
440 | /* |
441 | ** |
442 | ** __________sometext$(variable_name)_________ |
443 | ** | | | | |
444 | ** t_begin' t_end' `v_begin `v_end |
445 | ** |
446 | */ |
447 | |
448 | v_begin = p+SV_BEGIN_LEN; /* variable field ptr */ |
449 | v_end = e-SV_END_LEN; /* variable field last character */ |
450 | v_size = v_end-v_begin+1;/* variable field length */ |
451 | |
452 | t_begin = q; /* text field ptr */ |
453 | t_end = p-1; /* text field last character */ |
454 | t_size = t_end-t_begin+1;/* text field length */ |
455 | |
456 | /* work on text */ |
457 | if ( (outfn (t_begin, t_size, result)) == -1 ) |
458 | return -1; |
459 | |
460 | /* work on variable */ |
461 | v_ptr = get_variable (v_begin, v_size, vdt); |
462 | if (!v_ptr) return -1; |
463 | |
464 | if ( (outfn (v_ptr->value, v_ptr->value_length, result)) == -1 ) |
465 | return -1; |
466 | |
467 | q = e + 1; |
468 | } |
469 | |
470 | /* work on last part of text if any */ |
471 | if (*q != '\0') |
472 | if ( (outfn (q, strlen(q), result)) == -1 ) |
473 | return -1; |
474 | |
475 | return 0; |
476 | } |
477 | |
478 | /* siefca@pld.org.pl */ |
479 | static char *parse_string (const char *source, struct var_data *vdt) |
480 | { |
481 | struct var_data *vdp = NULL; |
482 | char *output_buf = NULL, |
483 | *pass_buf = NULL; |
484 | size_t buf_size = 2; |
485 | |
486 | if (source == NULL || *source == '\0' || |
487 | vdt == NULL || vdt[0].name == NULL) |
488 | { |
489 | err("authmysql: source clause is empty " |
490 | "- this is critical error"); |
491 | return NULL; |
492 | } |
493 | |
494 | /* zero var_data length cache - important! */ |
495 | for (vdp=vdt; vdp->name; vdp++) |
496 | vdp->value_length = 0; |
497 | |
498 | |
499 | /* phase 1 - count and validate string */ |
500 | if ( (parse_core (source, vdt, &ParsePlugin_counter, &buf_size)) != 0) |
501 | return NULL; |
502 | |
503 | /* phase 2 - allocate memory */ |
504 | output_buf = malloc (buf_size); |
505 | if (!output_buf) |
506 | { |
507 | perror ("malloc"); |
508 | return NULL; |
509 | } |
510 | pass_buf = output_buf; |
511 | |
512 | /* phase 3 - build the output string */ |
513 | if ( (parse_core (source, vdt, &ParsePlugin_builder, &pass_buf)) != 0) |
514 | { |
515 | free (output_buf); |
516 | return NULL; |
517 | } |
518 | *pass_buf = '\0'; |
519 | |
520 | return output_buf; |
521 | } |
522 | |
0fde1ce3 |
523 | static char *local_part_escaped(const char *username) |
d9898ee8 |
524 | { |
0fde1ce3 |
525 | const char *p=strchr(username, '@'); |
526 | size_t n=p ? p-username:strlen(username); |
527 | char *buf=malloc(n*2+1); |
528 | |
529 | if (!buf) |
d9898ee8 |
530 | { |
0fde1ce3 |
531 | perror("malloc"); |
532 | return NULL; |
d9898ee8 |
533 | } |
534 | |
0fde1ce3 |
535 | mysql_real_escape_string(mysql, buf, username, n); |
536 | return buf; |
d9898ee8 |
537 | } |
538 | |
0fde1ce3 |
539 | static char *domain_part_escaped(const char *username, |
540 | const char *defdomain) |
d9898ee8 |
541 | { |
0fde1ce3 |
542 | const char *p=strchr(username, '@'); |
543 | size_t n; |
544 | char *buf; |
d9898ee8 |
545 | |
0fde1ce3 |
546 | if (p) |
547 | ++p; |
548 | else |
549 | p=defdomain; |
550 | |
551 | n=strlen(p); |
552 | |
553 | buf=malloc(n*2+1); |
554 | |
555 | if (!buf) |
556 | { |
557 | perror("malloc"); |
d9898ee8 |
558 | return NULL; |
0fde1ce3 |
559 | } |
d9898ee8 |
560 | |
0fde1ce3 |
561 | mysql_real_escape_string(mysql, buf, p, n); |
562 | return buf; |
d9898ee8 |
563 | } |
564 | |
0fde1ce3 |
565 | static int local_and_domain_part_escaped(const char *username, |
566 | const char *defdomain, |
567 | char **local_ret, |
568 | char **domain_ret) |
d9898ee8 |
569 | { |
0fde1ce3 |
570 | if ((*local_ret=local_part_escaped(username)) == NULL) |
571 | return 0; |
d9898ee8 |
572 | |
0fde1ce3 |
573 | if ((*domain_ret=domain_part_escaped(username, defdomain)) == NULL) |
d9898ee8 |
574 | { |
0fde1ce3 |
575 | free(*local_ret); |
576 | return 0; |
d9898ee8 |
577 | } |
0fde1ce3 |
578 | |
579 | return 1; |
d9898ee8 |
580 | } |
581 | |
582 | /* siefca@pld.org.pl */ |
583 | static char *parse_select_clause (const char *clause, const char *username, |
584 | const char *defdomain, |
585 | const char *service) |
586 | { |
0fde1ce3 |
587 | char *str; |
588 | |
589 | static struct var_data vd[]={ |
590 | {"local_part", NULL, sizeof("local_part"), 0}, |
591 | {"domain", NULL, sizeof("domain"), 0}, |
592 | {"service", NULL, sizeof("service"), 0}, |
593 | {NULL, NULL, 0, 0}}; |
594 | |
595 | char *l_part; |
596 | char *d_part; |
d9898ee8 |
597 | |
598 | if (clause == NULL || *clause == '\0' || |
599 | !username || *username == '\0') |
600 | return NULL; |
0fde1ce3 |
601 | |
602 | if (!local_and_domain_part_escaped(username, defdomain, |
603 | &l_part, &d_part)) |
d9898ee8 |
604 | return NULL; |
0fde1ce3 |
605 | |
606 | vd[0].value=l_part; |
607 | vd[1].value=d_part; |
d9898ee8 |
608 | vd[2].value = service; |
609 | |
0fde1ce3 |
610 | str=parse_string (clause, vd); |
611 | free(l_part); |
612 | free(d_part); |
613 | return str; |
d9898ee8 |
614 | } |
615 | |
616 | /* siefca@pld.org.pl */ |
617 | static char *parse_chpass_clause (const char *clause, const char *username, |
618 | const char *defdomain, const char *newpass, |
619 | const char *newpass_crypt) |
620 | { |
0fde1ce3 |
621 | char *str; |
622 | |
623 | static struct var_data vd[]={ |
624 | {"local_part", NULL, sizeof("local_part"), 0}, |
625 | {"domain", NULL, sizeof("domain"), 0}, |
626 | {"newpass", NULL, sizeof("newpass"), 0}, |
627 | {"newpass_crypt", NULL, sizeof("newpass_crypt"), 0}, |
628 | {NULL, NULL, 0, 0}}; |
629 | char *l_part; |
630 | char *d_part; |
d9898ee8 |
631 | |
632 | if (clause == NULL || *clause == '\0' || |
633 | !username || *username == '\0' || |
634 | !newpass || *newpass == '\0' || |
635 | !newpass_crypt || *newpass_crypt == '\0') return NULL; |
636 | |
0fde1ce3 |
637 | if (!local_and_domain_part_escaped(username, defdomain, |
638 | &l_part, &d_part)) |
639 | return NULL; |
640 | |
641 | vd[0].value=l_part; |
642 | vd[1].value=d_part; |
643 | vd[2].value = newpass; |
644 | vd[3].value = newpass_crypt; |
d9898ee8 |
645 | |
646 | if (!vd[0].value || !vd[1].value || |
0fde1ce3 |
647 | !vd[2].value || !vd[3].value) |
648 | { |
649 | free(l_part); |
650 | free(d_part); |
651 | return NULL; |
652 | } |
d9898ee8 |
653 | |
0fde1ce3 |
654 | str=parse_string (clause, vd); |
655 | free(l_part); |
656 | free(d_part); |
657 | return str; |
d9898ee8 |
658 | } |
659 | |
660 | struct authmysqluserinfo *auth_mysql_getuserinfo(const char *username, |
661 | const char *service) |
662 | { |
663 | const char *defdomain =NULL; |
0fde1ce3 |
664 | char *querybuf; |
d9898ee8 |
665 | MYSQL_ROW row; |
666 | MYSQL_RES *result; |
667 | int num_fields; |
668 | char *endp; |
669 | |
670 | const char *select_clause; /* siefca@pld.org.pl */ |
671 | |
0fde1ce3 |
672 | #define DEFAULT_SELECT_QUERY "SELECT %s, %s, %s, %s, %s, %s, %s, %s, %s, %s FROM %s WHERE %s = '%s%s%s' %s%s%s", \ |
673 | login_field, crypt_field, clear_field, uid_field,\ |
674 | gid_field, home_field, maildir_field, quota_field,\ |
675 | name_field, options_field, user_table, login_field,\ |
676 | username_escaped,\ |
677 | has_domain || !*defdomain ? "":"@", has_domain ? "":defdomain, \ |
678 | *where_clause ? " AND (":"", where_clause,\ |
679 | *where_clause ? ")":"" |
d9898ee8 |
680 | |
681 | if (do_connect()) return (0); |
682 | |
683 | initui(); |
684 | |
685 | select_clause=read_env("MYSQL_SELECT_CLAUSE"); |
686 | defdomain=read_env("DEFAULT_DOMAIN"); |
687 | if (!defdomain) defdomain=""; |
688 | |
689 | if (!select_clause) /* siefca@pld.org.pl */ |
690 | { |
691 | const char *user_table, |
692 | *crypt_field, |
693 | *clear_field, |
694 | *name_field, |
695 | *uid_field, |
696 | *gid_field, |
697 | *login_field, |
698 | *home_field, |
699 | *maildir_field, |
700 | *quota_field, |
701 | *options_field, |
702 | *where_clause; |
0fde1ce3 |
703 | char *username_escaped; |
704 | size_t query_size; |
705 | char dummy_buf[1]; |
706 | int has_domain; |
d9898ee8 |
707 | |
708 | user_table=read_env("MYSQL_USER_TABLE"); |
709 | |
710 | if (!user_table) |
711 | { |
712 | err("authmysql: MYSQL_USER_TABLE not set in " |
713 | AUTHMYSQLRC "."); |
714 | return (0); |
715 | } |
716 | |
717 | crypt_field=read_env("MYSQL_CRYPT_PWFIELD"); |
718 | clear_field=read_env("MYSQL_CLEAR_PWFIELD"); |
719 | name_field=read_env("MYSQL_NAME_FIELD"); |
720 | |
721 | if (!crypt_field && !clear_field) |
722 | { |
723 | err("authmysql: MYSQL_CRYPT_PWFIELD and " |
724 | "MYSQL_CLEAR_PWFIELD not set in " AUTHMYSQLRC "."); |
725 | return (0); |
726 | } |
727 | if (!crypt_field) crypt_field="\"\""; |
728 | if (!clear_field) clear_field="\"\""; |
729 | if (!name_field) name_field="\"\""; |
730 | |
731 | uid_field = read_env("MYSQL_UID_FIELD"); |
732 | if (!uid_field) uid_field = "uid"; |
733 | |
734 | gid_field = read_env("MYSQL_GID_FIELD"); |
735 | if (!gid_field) gid_field = "gid"; |
736 | |
737 | login_field = read_env("MYSQL_LOGIN_FIELD"); |
738 | if (!login_field) login_field = "id"; |
739 | |
740 | home_field = read_env("MYSQL_HOME_FIELD"); |
741 | if (!home_field) home_field = "home"; |
742 | |
743 | maildir_field=read_env(service && strcmp(service, "courier")==0 |
744 | ? "MYSQL_DEFAULTDELIVERY" |
745 | : "MYSQL_MAILDIR_FIELD"); |
746 | if (!maildir_field) maildir_field="\"\""; |
747 | |
748 | quota_field=read_env("MYSQL_QUOTA_FIELD"); |
749 | if (!quota_field) quota_field="\"\""; |
750 | |
751 | options_field=read_env("MYSQL_AUXOPTIONS_FIELD"); |
752 | if (!options_field) options_field="\"\""; |
753 | |
754 | where_clause=read_env("MYSQL_WHERE_CLAUSE"); |
755 | if (!where_clause) where_clause = ""; |
756 | |
0fde1ce3 |
757 | username_escaped=malloc(strlen(username)*2+1); |
d9898ee8 |
758 | |
0fde1ce3 |
759 | if (!username_escaped) |
d9898ee8 |
760 | { |
761 | perror("malloc"); |
762 | return (0); |
763 | } |
764 | |
0fde1ce3 |
765 | mysql_real_escape_string(mysql, username_escaped, |
766 | username, strlen(username)); |
d9898ee8 |
767 | |
0fde1ce3 |
768 | has_domain=strchr(username, '@') != NULL; |
d9898ee8 |
769 | |
0fde1ce3 |
770 | query_size=snprintf(dummy_buf, 1, DEFAULT_SELECT_QUERY); |
771 | |
772 | querybuf=malloc(query_size+1); |
773 | |
774 | if (!querybuf) |
775 | { |
776 | free(username_escaped); |
777 | perror("malloc"); |
778 | return(0); |
d9898ee8 |
779 | } |
0fde1ce3 |
780 | |
781 | snprintf(querybuf, query_size+1, DEFAULT_SELECT_QUERY); |
782 | free(username_escaped); |
783 | |
d9898ee8 |
784 | } |
785 | else |
786 | { |
787 | /* siefca@pld.org.pl */ |
788 | querybuf=parse_select_clause (select_clause, username, |
789 | defdomain, service); |
790 | if (!querybuf) |
791 | { |
792 | DPRINTF("parse_select_clause failed (DEFAULT_DOMAIN not set?)"); |
793 | return 0; |
794 | } |
795 | } |
796 | |
797 | DPRINTF("SQL query: %s", querybuf); |
798 | if (mysql_query (mysql, querybuf)) |
799 | { |
800 | /* <o.blasnik@nextra.de> */ |
801 | |
802 | DPRINTF("mysql_query failed, reconnecting: %s", mysql_error(mysql)); |
803 | auth_mysql_cleanup(); |
804 | |
805 | if (do_connect()) |
806 | { |
807 | free(querybuf); |
808 | return (0); |
809 | } |
810 | |
811 | if (mysql_query (mysql, querybuf)) |
812 | { |
813 | DPRINTF("mysql_query failed second time, giving up: %s", mysql_error(mysql)); |
814 | free(querybuf); |
815 | auth_mysql_cleanup(); |
816 | /* Server went down, that's OK, |
817 | ** try again next time. |
818 | */ |
819 | return (0); |
820 | } |
821 | } |
822 | free(querybuf); |
823 | |
824 | result = mysql_store_result (mysql); |
825 | if (result) |
826 | { |
827 | if (mysql_num_rows(result)) |
828 | { |
829 | row = mysql_fetch_row (result); |
830 | num_fields = mysql_num_fields (result); |
831 | |
832 | if (num_fields < 6) |
833 | { |
834 | DPRINTF("incomplete row, only %d fields returned", |
835 | num_fields); |
836 | mysql_free_result(result); |
837 | return(0); |
838 | } |
839 | |
840 | if (row[0] && row[0][0]) |
841 | ui.username=strdup(row[0]); |
842 | if (row[1] && row[1][0]) |
843 | ui.cryptpw=strdup(row[1]); |
844 | if (row[2] && row[2][0]) |
845 | ui.clearpw=strdup(row[2]); |
846 | /* perhaps authmysql needs a glob_uid/glob_gid feature |
847 | like authldap? */ |
848 | if (!row[3] || !row[3][0] || |
849 | (ui.uid=strtol(row[3], &endp, 10), endp[0] != '\0')) |
850 | { |
851 | DPRINTF("invalid value for uid: '%s'", |
852 | row[3] ? row[3] : "<null>"); |
853 | mysql_free_result(result); |
854 | return 0; |
855 | } |
856 | if (!row[4] || !row[4][0] || |
857 | (ui.gid=strtol(row[4], &endp, 10), endp[0] != '\0')) |
858 | { |
859 | DPRINTF("invalid value for gid: '%s'", |
860 | row[4] ? row[4] : "<null>"); |
861 | mysql_free_result(result); |
862 | return 0; |
863 | } |
864 | if (row[5] && row[5][0]) |
865 | ui.home=strdup(row[5]); |
866 | else |
867 | { |
868 | DPRINTF("required value for 'home' (column 6) is missing"); |
869 | mysql_free_result(result); |
870 | return(0); |
871 | } |
872 | if (num_fields > 6 && row[6] && row[6][0]) |
873 | ui.maildir=strdup(row[6]); |
874 | if (num_fields > 7 && row[7] && row[7][0]) |
875 | ui.quota=strdup(row[7]); |
876 | if (num_fields > 8 && row[8] && row[8][0]) |
877 | ui.fullname=strdup(row[8]); |
878 | if (num_fields > 9 && row[9] && row[9][0]) |
879 | ui.options=strdup(row[9]); |
880 | } |
881 | else |
882 | { |
883 | DPRINTF("zero rows returned"); |
884 | mysql_free_result(result); |
885 | return (&ui); /* User not found */ |
886 | } |
887 | } |
888 | else |
889 | { |
890 | DPRINTF("mysql_store_result failed"); |
891 | return (0); |
892 | } |
893 | mysql_free_result(result); |
894 | return (&ui); |
895 | } |
896 | |
897 | int auth_mysql_setpass(const char *user, const char *pass, |
898 | const char *oldpass) |
899 | { |
900 | char *newpass_crypt; |
d9898ee8 |
901 | char *sql_buf; |
d9898ee8 |
902 | int rc=0; |
903 | |
0fde1ce3 |
904 | char *clear_escaped; |
905 | char *crypt_escaped; |
906 | |
d9898ee8 |
907 | const char *clear_field =NULL, |
908 | *crypt_field =NULL, |
909 | *defdomain =NULL, |
910 | *where_clause =NULL, |
911 | *user_table =NULL, |
912 | *login_field =NULL, |
913 | *chpass_clause =NULL; /* siefca@pld.org.pl */ |
914 | |
0fde1ce3 |
915 | if (do_connect()) return (-1); |
d9898ee8 |
916 | |
917 | if (!(newpass_crypt=authcryptpasswd(pass, oldpass))) |
918 | return (-1); |
919 | |
0fde1ce3 |
920 | clear_escaped=malloc(strlen(pass)*2+1); |
921 | |
922 | if (!clear_escaped) |
d9898ee8 |
923 | { |
0fde1ce3 |
924 | perror("malloc"); |
925 | free(newpass_crypt); |
926 | return -1; |
d9898ee8 |
927 | } |
928 | |
0fde1ce3 |
929 | crypt_escaped=malloc(strlen(newpass_crypt)*2+1); |
930 | |
931 | if (!crypt_escaped) |
932 | { |
933 | perror("malloc"); |
934 | free(clear_escaped); |
935 | free(newpass_crypt); |
936 | return -1; |
937 | } |
938 | |
939 | mysql_real_escape_string(mysql, clear_escaped, pass, strlen(pass)); |
940 | mysql_real_escape_string(mysql, crypt_escaped, |
941 | newpass_crypt, strlen(newpass_crypt)); |
942 | |
d9898ee8 |
943 | /* siefca@pld.org.pl */ |
944 | chpass_clause=read_env("MYSQL_CHPASS_CLAUSE"); |
945 | defdomain=read_env("DEFAULT_DOMAIN"); |
946 | user_table=read_env("MYSQL_USER_TABLE"); |
947 | if (!chpass_clause) |
948 | { |
0fde1ce3 |
949 | int has_domain=strchr(user, '@') != NULL; |
950 | char *username_escaped; |
951 | char dummy_buf[1]; |
952 | size_t sql_buf_size; |
953 | |
954 | username_escaped=malloc(strlen(user)*2+1); |
955 | |
956 | if (!username_escaped) |
957 | { |
958 | perror("malloc"); |
959 | free(clear_escaped); |
960 | free(crypt_escaped); |
961 | free(newpass_crypt); |
962 | return -1; |
963 | } |
964 | |
965 | mysql_real_escape_string(mysql, username_escaped, |
966 | user, strlen(user)); |
967 | |
d9898ee8 |
968 | login_field = read_env("MYSQL_LOGIN_FIELD"); |
969 | if (!login_field) login_field = "id"; |
970 | crypt_field=read_env("MYSQL_CRYPT_PWFIELD"); |
971 | clear_field=read_env("MYSQL_CLEAR_PWFIELD"); |
972 | where_clause=read_env("MYSQL_WHERE_CLAUSE"); |
d9898ee8 |
973 | |
0fde1ce3 |
974 | if (!where_clause) |
975 | where_clause=""; |
d9898ee8 |
976 | |
0fde1ce3 |
977 | if (!crypt_field) |
978 | crypt_field=""; |
d9898ee8 |
979 | |
0fde1ce3 |
980 | if (!clear_field) |
981 | clear_field=""; |
d9898ee8 |
982 | |
d9898ee8 |
983 | |
0fde1ce3 |
984 | #define DEFAULT_SETPASS_UPDATE \ |
985 | "UPDATE %s SET %s%s%s%s %s %s%s%s%s WHERE %s='%s%s%s' %s%s%s", \ |
986 | user_table, \ |
987 | *clear_field ? clear_field:"", \ |
988 | *clear_field ? "='":"", \ |
989 | *clear_field ? clear_escaped:"", \ |
990 | *clear_field ? "'":"", \ |
991 | \ |
992 | *clear_field && *crypt_field ? ",":"", \ |
993 | \ |
994 | *crypt_field ? crypt_field:"", \ |
995 | *crypt_field ? "='":"", \ |
996 | *crypt_field ? crypt_escaped:"", \ |
997 | *crypt_field ? "'":"", \ |
998 | login_field, \ |
999 | username_escaped, \ |
1000 | has_domain || !*defdomain ? "":"@", \ |
1001 | has_domain ? "":defdomain, \ |
1002 | *where_clause ? " AND (":"", where_clause, \ |
1003 | *where_clause ? ")":"" |
d9898ee8 |
1004 | |
d9898ee8 |
1005 | |
0fde1ce3 |
1006 | sql_buf_size=snprintf(dummy_buf, 1, DEFAULT_SETPASS_UPDATE); |
d9898ee8 |
1007 | |
0fde1ce3 |
1008 | sql_buf=malloc(sql_buf_size+1); |
d9898ee8 |
1009 | |
0fde1ce3 |
1010 | if (sql_buf) |
1011 | snprintf(sql_buf, sql_buf_size+1, |
1012 | DEFAULT_SETPASS_UPDATE); |
d9898ee8 |
1013 | |
0fde1ce3 |
1014 | free(username_escaped); |
d9898ee8 |
1015 | } |
1016 | else |
1017 | { |
0fde1ce3 |
1018 | sql_buf=parse_chpass_clause(chpass_clause, |
1019 | user, |
1020 | defdomain, |
1021 | clear_escaped, |
1022 | crypt_escaped); |
d9898ee8 |
1023 | } |
0fde1ce3 |
1024 | |
1025 | free(clear_escaped); |
1026 | free(crypt_escaped); |
1027 | free(newpass_crypt); |
d9898ee8 |
1028 | |
1029 | if (courier_authdebug_login_level >= 2) |
1030 | { |
1031 | DPRINTF("setpass SQL: %s", sql_buf); |
1032 | } |
1033 | if (mysql_query (mysql, sql_buf)) |
1034 | { |
1035 | DPRINTF("setpass SQL failed"); |
1036 | rc= -1; |
1037 | auth_mysql_cleanup(); |
1038 | } |
1039 | free(sql_buf); |
1040 | return (rc); |
1041 | } |
1042 | |
1043 | void auth_mysql_enumerate( void(*cb_func)(const char *name, |
1044 | uid_t uid, |
1045 | gid_t gid, |
1046 | const char *homedir, |
1047 | const char *maildir, |
1048 | const char *options, |
1049 | void *void_arg), |
1050 | void *void_arg) |
1051 | { |
1052 | const char *defdomain, *select_clause; |
0fde1ce3 |
1053 | char *querybuf; |
d9898ee8 |
1054 | MYSQL_ROW row; |
1055 | MYSQL_RES *result; |
1056 | |
d9898ee8 |
1057 | if (do_connect()) return; |
1058 | |
1059 | initui(); |
1060 | |
1061 | select_clause=read_env("MYSQL_ENUMERATE_CLAUSE"); |
1062 | defdomain=read_env("DEFAULT_DOMAIN"); |
1063 | if (!defdomain || !defdomain[0]) |
1064 | defdomain="*"; /* otherwise parse_select_clause fails */ |
1065 | |
1066 | if (!select_clause) |
1067 | { |
1068 | const char *user_table, |
1069 | *uid_field, |
1070 | *gid_field, |
1071 | *login_field, |
1072 | *home_field, |
1073 | *maildir_field, |
1074 | *options_field, |
1075 | *where_clause; |
0fde1ce3 |
1076 | char dummy_buf[1]; |
1077 | size_t query_len; |
d9898ee8 |
1078 | |
1079 | user_table=read_env("MYSQL_USER_TABLE"); |
1080 | |
1081 | if (!user_table) |
1082 | { |
1083 | err("authmysql: MYSQL_USER_TABLE not set in " |
1084 | AUTHMYSQLRC "."); |
1085 | return; |
1086 | } |
1087 | |
1088 | uid_field = read_env("MYSQL_UID_FIELD"); |
1089 | if (!uid_field) uid_field = "uid"; |
1090 | |
1091 | gid_field = read_env("MYSQL_GID_FIELD"); |
1092 | if (!gid_field) gid_field = "gid"; |
1093 | |
1094 | login_field = read_env("MYSQL_LOGIN_FIELD"); |
1095 | if (!login_field) login_field = "id"; |
1096 | |
1097 | home_field = read_env("MYSQL_HOME_FIELD"); |
1098 | if (!home_field) home_field = "home"; |
1099 | |
1100 | maildir_field=read_env("MYSQL_MAILDIR_FIELD"); |
1101 | if (!maildir_field) maildir_field="\"\""; |
1102 | |
1103 | options_field=read_env("MYSQL_AUXOPTIONS_FIELD"); |
1104 | if (!options_field) options_field="\"\""; |
1105 | |
1106 | where_clause=read_env("MYSQL_WHERE_CLAUSE"); |
1107 | if (!where_clause) where_clause = ""; |
1108 | |
0fde1ce3 |
1109 | |
1110 | #define DEFAULT_ENUMERATE_QUERY \ |
1111 | "SELECT %s, %s, %s, %s, %s, %s FROM %s %s%s",\ |
1112 | login_field, uid_field, gid_field, \ |
1113 | home_field, maildir_field, \ |
1114 | options_field, user_table, \ |
1115 | *where_clause ? " WHERE ":"", \ |
1116 | where_clause |
1117 | |
1118 | query_len=snprintf(dummy_buf, 1, DEFAULT_ENUMERATE_QUERY); |
1119 | |
1120 | querybuf=malloc(query_len+1); |
d9898ee8 |
1121 | |
1122 | if (!querybuf) |
1123 | { |
1124 | perror("malloc"); |
1125 | return; |
1126 | } |
1127 | |
0fde1ce3 |
1128 | snprintf(querybuf, query_len+1, DEFAULT_ENUMERATE_QUERY); |
d9898ee8 |
1129 | } |
1130 | else |
1131 | { |
1132 | /* siefca@pld.org.pl */ |
1133 | querybuf=parse_select_clause (select_clause, "*", |
1134 | defdomain, "enumerate"); |
1135 | if (!querybuf) |
1136 | { |
1137 | DPRINTF("authmysql: parse_select_clause failed"); |
1138 | return; |
1139 | } |
1140 | } |
1141 | DPRINTF("authmysql: enumerate query: %s", querybuf); |
1142 | |
1143 | if (mysql_query (mysql, querybuf)) |
1144 | { |
1145 | DPRINTF("mysql_query failed, reconnecting: %s", mysql_error(mysql)); |
1146 | /* <o.blasnik@nextra.de> */ |
1147 | |
1148 | auth_mysql_cleanup(); |
1149 | |
1150 | if (do_connect()) |
1151 | { |
1152 | free(querybuf); |
1153 | return; |
1154 | } |
1155 | |
1156 | if (mysql_query (mysql, querybuf)) |
1157 | { |
1158 | DPRINTF("mysql_query failed second time, giving up: %s", mysql_error(mysql)); |
1159 | free(querybuf); |
1160 | auth_mysql_cleanup(); |
1161 | return; |
1162 | } |
1163 | } |
1164 | free(querybuf); |
1165 | |
1166 | result = mysql_use_result (mysql); |
1167 | if (result) |
1168 | { |
1169 | const char *username; |
1170 | uid_t uid; |
1171 | gid_t gid; |
1172 | const char *homedir; |
1173 | const char *maildir; |
1174 | const char *options; |
1175 | |
1176 | while ((row = mysql_fetch_row (result)) != NULL) |
1177 | { |
1178 | if(!row[0] || !row[0][0] |
0fde1ce3 |
1179 | || !row[1] || !row[1][0] |
1180 | || !row[2] || !row[2][0] |
1181 | || !row[3] || !row[3][0]) |
d9898ee8 |
1182 | { |
1183 | continue; |
1184 | } |
1185 | |
1186 | username=row[0]; |
1187 | uid=atol(row[1]); /* FIXME use strtol to validate */ |
1188 | gid=atol(row[2]); |
1189 | homedir=row[3]; |
1190 | maildir=row[4]; |
1191 | options=row[5]; |
1192 | |
1193 | if (maildir && !*maildir) |
1194 | maildir=NULL; |
1195 | |
1196 | (*cb_func)(username, uid, gid, homedir, |
1197 | maildir, options, void_arg); |
1198 | } |
1199 | } |
1200 | /* NULL row could indicate end of result or an error */ |
1201 | if (mysql_errno(mysql)) |
1202 | { |
1203 | DPRINTF("mysql error during enumeration: %s", mysql_error(mysql)); |
1204 | } |
1205 | else |
1206 | (*cb_func)(NULL, 0, 0, NULL, NULL, NULL, void_arg); |
1207 | |
1208 | if (result) mysql_free_result(result); |
1209 | } |