masqmail: 899175e8dff0 src/masqmail.h

masqmail

view src/masqmail.h @ 271:899175e8dff0

heavy refactoring in the small of parse.c I really hope I didn't change any behavior. This reminds me that we really need a test framework.

author	markus schnalke <meillo@marmaro.de>
date	Fri, 03 Dec 2010 13:05:59 -0300
parents	82d168dd52fd
children	ca2d11aec2a3

line source

1 /* MasqMail

2 Copyright (C) 1999-2001 Oliver Kurth

3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de>

5 This program is free software; you can redistribute it and/or modify

6 it under the terms of the GNU General Public License as published by

7 the Free Software Foundation; either version 2 of the License, or

8 (at your option) any later version.

10 This program is distributed in the hope that it will be useful,

11 but WITHOUT ANY WARRANTY; without even the implied warranty of

12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

13 GNU General Public License for more details.

15 You should have received a copy of the GNU General Public License

16 along with this program; if not, write to the Free Software

17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

19 #include <config.h>

21 #include <stdio.h>

22 #include <stdarg.h>

23 #include <errno.h>

24 #include <stdlib.h>

25 #include <string.h>

26 #include <ctype.h>

27 #include <unistd.h>

28 #include <pwd.h>

29 #include <sys/types.h>

30 #include <sys/socket.h>

31 #include <netinet/in.h>

32 #include <time.h>

33 #include <sys/time.h>

34 #include <netinet/in.h>

35 #include <arpa/inet.h>

36 #include <netdb.h>

37 #include <syslog.h>

38 #include <signal.h>

39 #include <fcntl.h>

41 #include <glib.h>

43 #ifdef ENABLE_IDENT

44 #include "libident/ident.h"

45 #endif

47 #include "lookup.h"

49 typedef struct _interface {

50 gchar *address;

51 gint port;

52 } interface;

54 #define ADDR_FLAG_DELIVERED 0x01

55 #define ADDR_FLAG_DEFERED 0x02

56 #define ADDR_FLAG_FAILED 0x04

57 #define ADDR_FLAG_LAST_ROUTE 0x40

59 typedef struct _address {

60 gchar *address;

61 gchar *local_part;

62 gchar *domain;

63 gint flags;

64 GList *children;

65 struct _address *parent;

66 } address;

68 #define addr_mark_delivered(addr) { addr->flags |= ADDR_FLAG_DELIVERED; }

69 #define addr_unmark_delivered(addr) { addr->flags &= ~ADDR_FLAG_DELIVERED; }

70 #define addr_is_delivered(addr) ((addr->flags & ADDR_FLAG_DELIVERED) != 0 )

72 #define addr_mark_defered(addr) { addr->flags |= ADDR_FLAG_DEFERED; }

73 #define addr_unmark_defered(addr) { addr->flags &= ~ADDR_FLAG_DEFERED; }

74 #define addr_is_defered(addr) ((addr->flags & ADDR_FLAG_DEFERED) != 0 )

76 #define addr_mark_failed(addr) { addr->flags |= ADDR_FLAG_FAILED; }

77 #define addr_unmark_failed(addr) { addr->flags &= ~ADDR_FLAG_FAILED; }

78 #define addr_is_failed(addr) ((addr->flags & ADDR_FLAG_FAILED) != 0 )

80 typedef struct _connect_route {

81 gchar *name;

82 gchar *filename;

84 gchar *protocol;

86 gboolean is_local_net;

87 gboolean last_route;

89 GList *allowed_return_paths;

90 GList *not_allowed_return_paths;

91 GList *allowed_mail_locals;

92 GList *not_allowed_mail_locals;

93 GList *allowed_rcpt_domains;

94 GList *not_allowed_rcpt_domains;

96 interface *mail_host;

97 gchar *wrapper;

98 gboolean connect_error_fail;

100 gchar *helo_name;

101 gboolean do_correct_helo;

102 gboolean instant_helo;

103 gboolean do_pipelining;

105 gchar *set_h_from_domain;

106 gchar *set_h_reply_to_domain;

107 gchar *set_return_path_domain;

109 GList *map_h_from_addresses;

110 GList *map_h_reply_to_addresses;

111 GList *map_h_mail_followup_to_addresses;

112 GList *map_return_path_addresses;

114 gboolean expand_h_sender_domain;

115 gboolean expand_h_sender_address;

117 GList *resolve_list;

119 gchar *auth_name;

120 gchar *auth_login;

121 gchar *auth_secret;

123 gchar *pipe;

125 gboolean pipe_fromline;

126 gboolean pipe_fromhack;

127 } connect_route;

129 typedef struct _masqmail_conf {

130 gint mail_uid;

131 gint mail_gid;

133 gint orig_uid;

134 gint orig_gid;

136 gboolean run_as_user;

138 gchar *mail_dir;

139 gchar *lock_dir;

140 gchar *spool_dir;

141 gchar *log_dir;

143 gint debug_level;

144 gboolean use_syslog;

145 guint log_max_pri;

147 gchar *host_name;

148 GList *local_hosts;

149 GList *local_addresses;

150 GList *not_local_addresses;

151 GList *local_nets;

152 GList *listen_addresses;

154 /* ANSI C defines unsigned long to be at least 32bit

155 i.e. ca. 4GB max; that should be enough. */

156 gulong max_msg_size;

158 gboolean do_save_envelope_to;

160 gboolean defer_all;

161 gboolean do_relay;

163 GList *ident_trusted_nets;

165 gboolean do_queue;

167 gboolean do_verbose;

169 gchar *mbox_default;

170 GList *mbox_users;

171 GList *mda_users;

173 gchar *mda;

174 gboolean mda_fromline;

175 gboolean mda_fromhack;

177 gboolean pipe_fromline;

178 gboolean pipe_fromhack;

180 gchar *alias_file;

181 int (*localpartcmp) (const char *, const char *);

183 GList *local_net_routes;

184 GList *connect_routes; /* list of pairs which point to lists */

186 gchar *online_detect;

187 gchar *online_file;

188 gchar *online_pipe;

190 gchar *errmsg_file;

191 gchar *warnmsg_file;

192 GList *warn_intervals;

193 gint max_defer_time;

195 gchar *log_user;

196 } masqmail_conf;

198 extern masqmail_conf conf;

200 typedef struct _table_pair {

201 gchar *key;

202 gpointer *value;

203 } table_pair;

206 typedef enum _prot_id {

207 PROT_LOCAL = 0,

208 PROT_BSMTP,

209 PROT_SMTP,

210 PROT_ESMTP,

211 PROT_NUM

212 } prot_id;

214 extern gchar *prot_names[];

216 typedef enum _header_id {

217 HEAD_FROM = 0,

218 HEAD_SENDER,

219 HEAD_TO,

220 HEAD_CC,

221 HEAD_BCC,

222 HEAD_DATE,

223 HEAD_MESSAGE_ID,

224 HEAD_REPLY_TO,

225 HEAD_SUBJECT,

226 HEAD_RETURN_PATH,

227 HEAD_ENVELOPE_TO,

228 HEAD_RECEIVED,

229 HEAD_NUM_IDS,

230 HEAD_STATUS,

231 HEAD_UNKNOWN = HEAD_NUM_IDS,

232 HEAD_NONE = -1,

233 } header_id;

235 typedef struct _header_name {

236 gchar *header;

237 header_id id;

238 } header_name;

240 typedef struct _header {

241 header_id id;

242 gchar *header;

243 gchar *value;

244 } header;

247 typedef struct _message {

248 gchar *uid;

250 gchar *received_host;

251 prot_id received_prot;

252 gchar *ident;

253 gint transfer_id; /* for multiple messages per transfer */

255 address *return_path;

256 GList *rcpt_list;

257 GList *non_rcpt_list;

259 GList *hdr_list;

260 GList *data_list;

262 gint data_size;

263 time_t received_time;

264 time_t warned_time;

266 gchar *full_sender_name;

267 } message;

269 typedef struct _msg_out {

270 message *msg;

272 address *return_path;

273 GList *rcpt_list;

275 GList *hdr_list;

276 GList *xtra_hdr_list;

277 } msg_out;

279 typedef struct _msgout_perhost {

280 gchar *host;

281 GList *msgout_list;

282 } msgout_perhost;

284 /* flags for accept() */

285 #define ACC_RCPT_FROM_HEAD 0x08 /* -t option, get rcpts from headers */

286 #define ACC_DOT_IGNORE 0x10 /* a dot on a line itself does not end the message (-oi option) */

287 #define ACC_MAIL_FROM_HEAD 0x40 /* get return path from header */

288 #define ACC_NODOT_RELAX 0x80 /* do not be picky if message ist not terminated by a dot on a line */

289 #define ACC_SAVE_ENVELOPE_TO 0x0100 /* save an existent Envelope-to header as X-Orig-Envelope-to */

291 #define DLVR_LOCAL 0x01

292 #define DLVR_LAN 0x02

293 #define DLVR_ONLINE 0x04

294 #define DLVR_ALL (DLVR_LOCAL|DLVR_LAN|DLVR_ONLINE)

296 /* transport flags */

297 #define MSGSTR_FROMLINE 0x01

298 #define MSGSTR_FROMHACK 0x02

300 typedef enum _accept_error {

301 AERR_OK = 0,

302 AERR_TIMEOUT,

303 AERR_EOF,

304 AERR_OVERFLOW,

305 AERR_SYNTAX,

306 AERR_NOSPOOL,

307 AERR_NORCPT,

308 AERR_SIZE, /* max msg size exeeded (SMTP SIZE) */

309 AERR_UNKNOWN

310 } accept_error;

312 #define BUF_LEN 1024

313 #define MAX_ADDRESS 256

314 #define MAX_DATALINE 4096

316 typedef enum _smtp_cmd_id {

317 SMTP_HELO = 0,

318 SMTP_EHLO,

319 SMTP_MAIL_FROM,

320 SMTP_RCPT_TO,

321 SMTP_DATA,

322 SMTP_QUIT,

323 SMTP_RSET,

324 SMTP_NOOP,

325 SMTP_HELP,

326 SMTP_NUM_IDS,

327 SMTP_EOF = -1,

328 SMTP_ERROR = -2,

329 } smtp_cmd_id;

331 typedef struct _smtp_cmd {

332 smtp_cmd_id id;

333 gchar *cmd;

334 } smtp_cmd;

336 typedef struct _smtp_connection {

337 gchar *remote_host;

339 prot_id prot;

340 gint next_id;

342 gboolean helo_seen;

343 gboolean from_seen;

344 gboolean rcpt_seen;

346 message *msg;

347 } smtp_connection;

349 /* alias.c*/

350 gboolean addr_is_local(address * addr);

351 GList *alias_expand(GList * alias_table, GList * rcpt_list, GList * non_rcpt_list);

353 /* child.c */

354 int child(const char *command);

356 /* conf.c */

357 void init_conf();

358 gboolean read_conf(gchar * filename);

359 connect_route *read_route(gchar * filename, gboolean is_local_net);

360 GList *read_route_list(GList * rf_list, gboolean is_local_net);

361 void destroy_route(connect_route * r);

362 void destroy_route_list(GList * list);

363 connect_route *create_local_route();

365 /* expand.c */

366 GList *var_table_rcpt(GList * var_table, address * rcpt);

367 GList *var_table_msg(GList * var_table, message * msg);

368 GList *var_table_conf(GList * var_table);

369 gint expand(GList * var_list, gchar * format, gchar * result, gint result_len);

371 /* message.c */

372 message *create_message(void);

373 void destroy_message(message * msg);

374 void destroy_msg_list(GList * msg_list);

375 void msg_free_data(message * msg);

376 gint msg_calc_size(message * msg, gboolean is_smtp);

378 msg_out *create_msg_out(message * msg);

379 msg_out *clone_msg_out(msg_out * msgout_orig);

380 GList *create_msg_out_list(GList * msg_list);

381 void destroy_msg_out(msg_out * msgout);

382 void destroy_msg_out_list(GList * msgout_list);

384 /* address.c */

385 address *create_address(gchar * path, gboolean is_rfc821);

386 address *create_address_qualified(gchar * path, gboolean is_rfc821, gchar * domain);

387 address *create_address_pipe(gchar * path);

388 void destroy_address(address * addr);

389 address *copy_modify_address(const address * orig, gchar * l_part, gchar * dom);

390 #define copy_address(addr) copy_modify_address(addr, NULL, NULL)

391 gboolean addr_isequal(address * addr1, address * addr2, int (*cmpfunc) (const char*, const char*));

392 gboolean addr_isequal_parent(address * addr1, address * addr2, int (*cmpfunc) (const char*, const char*));

393 address *addr_find_ancestor(address * addr);

394 gboolean addr_is_delivered_children(address * addr);

395 gboolean addr_is_finished_children(address * addr);

396 gchar *addr_string(address * addr);

397 gint addr_match(address * addr1, address * addr2);

399 /* accept.c */

400 accept_error accept_message(FILE * in, message * msg, guint flags);

401 accept_error accept_message_prepare(message * msg, guint flags);

403 /* header.c */

404 gchar *rec_timestamp();

405 GList *find_header(GList * hdr_list, header_id id, gchar * hdr_str);

406 void header_unfold(header * hdr);

407 void header_fold(header * hdr);

408 header *create_header(header_id id, gchar * fmt, ...);

409 void destroy_header(header * hdr);

410 header *copy_header(header * hdr);

411 header *get_header(gchar * line);

413 /* smtp_in.c */

414 void smtp_in(FILE * in, FILE * out, gchar * remote_host, gchar * ident);

416 /* listen.c */

417 void listen_port(GList * addr_list, gint qival, char *argv[]);

419 /* parse.c */

420 gboolean split_address(const gchar * path, gchar ** local_part, gchar ** domain, gboolean is_rfc821);

421 gboolean parse_address_rfc822(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);

422 gboolean parse_address_rfc821(gchar * string, gchar ** local_begin, gchar ** local_end, gchar ** domain_begin, gchar ** domain_end, gchar ** address_end);

423 address *_create_address(gchar * string, gchar ** end, gboolean is_rfc821);

424 address *create_address_rfc821(gchar * string, gchar ** end);

425 address *create_address_rfc822(gchar * string, gchar ** end);

426 GList *addr_list_append_rfc822(GList * addr_list, gchar * string, gchar * domain);

428 /* connect.c */

429 mxip_addr *connect_hostlist(int *psockfd, gchar * host, guint port, GList * addr_list);

430 mxip_addr *connect_resolvelist(int *psockfd, gchar * host, guint port, GList * res_funcs);

432 /* deliver.c */

433 void msg_rcptlist_local(GList * rcpt_list, GList **, GList **);

434 gboolean deliver_local(msg_out * msgout);

435 gboolean deliver_msglist_host(connect_route * route, GList * msg_list, gchar * host, GList * res_list);

436 gboolean deliver_route_msgout_list(connect_route * route, GList * msgout_list);

437 gboolean deliver_route_msg_list(connect_route * route, GList * msgout_list);

438 gboolean deliver_finish(msg_out * msgout);

439 gboolean deliver_finish_list(GList * msgout_list);

440 gboolean deliver_msg_list(GList * msg_list, guint flags);

441 gboolean deliver(message * msg);

443 /* fail_msg.c */

444 gboolean fail_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args);

445 gboolean warn_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args);

447 /* interface.c */

448 gboolean init_sockaddr(struct sockaddr_in *name, interface * iface);

449 int make_server_socket(interface * iface);

451 /* local.c */

452 gboolean append_file(message * msg, GList * hdr_list, gchar * user);

453 gboolean pipe_out(message * msg, GList * hdr_list, address * rcpt, gchar * cmd, guint flags);

455 /* log.c */

456 gchar *ext_strerror(int err);

457 gboolean logopen(void);

458 void logclose(void);

459 void vlogwrite(int pri, const char *fmt, va_list args);

460 void logwrite(int pri, const char *fmt, ...);

461 void debugf(const char *fmt, ...);

462 void vdebugf(const char *fmt, va_list args);

463 void maillog(const char *fmt, ...);

465 /* spool.c */

466 gboolean spool_read_data(message * msg);

467 message *msg_spool_read(gchar * uid, gboolean do_readdata);

468 gboolean spool_write(message * msg, gboolean do_writedata);

469 gboolean spool_lock(gchar * uid);

470 gboolean spool_unlock(gchar * uid);

471 gboolean spool_delete_all(message * msg);

473 /* queue.c */

474 GList *read_queue(gboolean do_readdata);

475 gboolean queue_run(void);

476 gboolean queue_run_online(void);

477 void queue_list(void);

478 gboolean queue_delete(gchar * uid);

480 /* online.c */

481 gchar *detect_online();

482 void set_online_name(gchar * name);

484 /* permissions.c */

485 gboolean is_ingroup(uid_t uid, gid_t gid);

486 void set_euidgid(gint uid, gint gid, uid_t * old_uid, gid_t * old_gid);

487 void set_identity(uid_t old_uid, gchar * task_name);

489 /* rewrite.c */

490 gboolean set_address_header_domain(header * hdr, gchar * domain);

491 gboolean map_address_header(header * hdr, GList * table);

493 /* route.c */

494 msgout_perhost *create_msgout_perhost(gchar * host);

495 void destroy_msgout_perhost(msgout_perhost * mo_ph);

496 void rewrite_headers(msg_out * msgout, connect_route * route);

497 void split_rcpts(GList* rcpt_list, GList* localnets, GList** rl_local, GList** rl_localnet, GList** rl_others);

498 gboolean route_strip_msgout(connect_route * route, msg_out * msgout);

499 msg_out *route_prepare_msgout(connect_route * route, msg_out * msgout);

500 GList *route_msgout_list(connect_route * route, GList * msgout_list);

501 gboolean route_is_allowed_return_path(connect_route * route, address * ret_path);

502 gboolean route_is_allowed_mail_local(connect_route * route, address * ret_path);

503 void msg_rcptlist_route(connect_route * route, GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list);

505 /* tables.c */

506 table_pair *create_pair(gchar * key, gpointer value);

507 table_pair *create_pair_string(gchar * key, gpointer value);

508 table_pair *parse_table_pair(gchar * line, char delim);

509 gpointer *table_find_func(GList * table_list, gchar * key, int (*cmp_func) (const char *, const char *));

510 gpointer *table_find(GList * table_list, gchar * key);

511 gpointer *table_find_case(GList * table_list, gchar * key);

512 gpointer *table_find_fnmatch(GList * table_list, gchar * key);

513 GList *table_read(gchar * fname, gchar delim);

514 void destroy_table(GList * table);

516 /* timeival.c */

517 gint time_interval(gchar * str);

519 /* permissions.c */

520 gboolean is_privileged_user(uid_t uid);

522 /* other things */

524 #define foreach(list, node)\

525 for((node) = g_list_first(list);\

526 (node);\

527 (node) = g_list_next(node))

529 #ifdef ENABLE_DEBUG

530 #define DEBUG(level) if(level <= conf.debug_level)

531 #else

532 /* hopefully the compiler optmizes this away... */

533 #define DEBUG(level) if(0)

534 #endif

536 #define LOG_VERBOSE 0x100

538 #ifndef HAVE_GETLINE

539 #define getline(buf, size, file) getdelim(buf, size, '\n', file)

540 #endif

542 #ifndef HAVE_FDATASYNC

543 #define fdatasync(fd) fsync(fd)

544 #endif

546 #ifndef CONF_DIR

547 #define CONF_DIR "/etc/masqmail"

548 #endif

550 #define CONF_FILE CONF_DIR"/masqmail.conf"

552 #define PIDFILEDIR "/var/run/masqmail/"

554 #ifndef va_copy

555 #ifdef __va_copy

556 #define va_copy(ap1, ap2) __va_copy(ap1, ap2)

557 #else

558 #define va_copy(ap1, ap2) G_VA_COPY(ap1, ap2)

559 #endif

560 #endif

562 /* *BSD needs this: */

563 extern char **environ;