masqmail-0.2: 9104234a56a5 src/masqmail.h

masqmail-0.2

view src/masqmail.h @ 107:9104234a56a5

never create headers from recipients because it could disclose private information

author	meillo@marmaro.de
date	Tue, 29 Jun 2010 10:45:33 +0200
parents	1f0d63713a1c
children	db52c64acaa2

line source

1 /* MasqMail

2 Copyright (C) 1999-2001 Oliver Kurth

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

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

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

7 (at your option) any later version.

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

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

11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

12 GNU General Public License for more details.

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

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

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

18 #include <config.h>

20 #include <stdio.h>

21 #include <stdarg.h>

22 #include <errno.h>

23 #include <stdlib.h>

24 #include <string.h>

25 #include <ctype.h>

26 #include <unistd.h>

27 #include <pwd.h>

28 #include <sys/types.h>

29 #include <sys/socket.h>

30 #include <netinet/in.h>

31 #include <time.h>

32 #include <sys/time.h>

33 #include <netinet/in.h>

34 #include <arpa/inet.h>

35 #include <netdb.h>

36 #include <syslog.h>

37 #include <signal.h>

38 #include <fcntl.h>

40 #include <glib.h>

42 #ifdef ENABLE_IDENT

43 #include "libident/ident.h"

44 #endif

46 #include "lookup.h"

48 typedef struct _interface {

49 gchar *address;

50 gint port;

51 } interface;

53 #define ADDR_FLAG_DELIVERED 0x01

54 #define ADDR_FLAG_DEFERED 0x02

55 #define ADDR_FLAG_FAILED 0x04

56 #define ADDR_FLAG_LAST_ROUTE 0x40

57 #define ADDR_FLAG_NOEXPAND 0x80

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 do_pipelining;

104 gchar *set_h_from_domain;

105 gchar *set_h_reply_to_domain;

106 gchar *set_return_path_domain;

108 GList *map_h_from_addresses;

109 GList *map_h_reply_to_addresses;

110 GList *map_h_mail_followup_to_addresses;

111 GList *map_return_path_addresses;

113 gboolean expand_h_sender_domain;

114 gboolean expand_h_sender_address;

116 GList *resolve_list;

118 gchar *auth_name;

119 gchar *auth_login;

120 gchar *auth_secret;

122 gchar *pop3_login;

124 gchar *pipe;

126 gboolean pipe_fromline;

127 gboolean pipe_fromhack;

128 } connect_route;

130 typedef struct _get_conf {

131 gchar *protocol;

132 gchar *server_name;

133 guint server_port;

134 gchar *wrapper;

135 gchar *login_user;

136 gchar *login_pass;

137 address *address;

138 address *return_path;

139 gboolean do_keep;

140 gboolean do_uidl;

141 gboolean do_uidl_dele;

142 gint max_size;

143 gboolean max_size_delete;

144 gint max_count;

146 GList *resolve_list;

148 } get_conf;

150 typedef struct _masqmail_conf {

151 gint mail_uid;

152 gint mail_gid;

154 gint orig_uid;

155 gint orig_gid;

157 gboolean run_as_user;

159 gchar *mail_dir;

160 gchar *lock_dir;

161 gchar *spool_dir;

162 gchar *log_dir;

164 gint debug_level;

165 gboolean use_syslog;

166 guint log_max_pri;

168 gchar *host_name;

169 GList *local_hosts;

170 GList *local_addresses;

171 GList *not_local_addresses;

172 GList *local_nets;

173 GList *listen_addresses;

175 guint remote_port;

177 gboolean do_save_envelope_to;

179 gboolean defer_all;

180 gboolean do_relay;

182 GList *ident_trusted_nets;

184 gboolean do_queue;

186 gboolean do_verbose;

188 gchar *mbox_default;

189 GList *mbox_users;

190 GList *mda_users;

191 GList *maildir_users;

193 gchar *mda;

194 gboolean mda_fromline;

195 gboolean mda_fromhack;

197 gboolean pipe_fromline;

198 gboolean pipe_fromhack;

200 gchar *alias_file;

201 int (*alias_local_cmp) (const char *, const char *);

203 GList *local_net_routes;

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

206 gchar *online_detect;

207 gchar *online_file;

208 gchar *online_pipe;

209 interface *mserver_iface;

211 GList *get_names;

212 GList *online_gets; /* list of pairs which point to lists */

214 gchar *errmsg_file;

215 gchar *warnmsg_file;

216 GList *warn_intervals;

217 gint max_defer_time;

219 gchar *log_user;

220 } masqmail_conf;

222 extern masqmail_conf conf;

224 typedef struct _table_pair {

225 gchar *key;

226 gpointer *value;

227 } table_pair;

230 typedef enum _prot_id {

231 PROT_LOCAL = 0,

232 PROT_BSMTP,

233 PROT_SMTP,

234 PROT_ESMTP,

235 PROT_POP3,

236 PROT_APOP,

237 PROT_NUM

238 } prot_id;

240 extern gchar *prot_names[];

242 typedef enum _header_id {

243 HEAD_FROM = 0,

244 HEAD_SENDER,

245 HEAD_TO,

246 HEAD_CC,

247 HEAD_BCC,

248 HEAD_DATE,

249 HEAD_MESSAGE_ID,

250 HEAD_REPLY_TO,

251 HEAD_SUBJECT,

252 HEAD_RETURN_PATH,

253 HEAD_ENVELOPE_TO,

254 HEAD_RECEIVED,

255 HEAD_NUM_IDS,

256 HEAD_STATUS,

257 HEAD_UNKNOWN = HEAD_NUM_IDS,

258 HEAD_NONE = -1,

259 } header_id;

261 typedef struct _header_name {

262 gchar *header;

263 header_id id;

264 } header_name;

266 typedef struct _header {

267 header_id id;

268 gchar *header;

269 gchar *value;

270 } header;

273 typedef struct _message {

274 gchar *uid;

276 gchar *received_host;

277 prot_id received_prot;

278 gchar *ident;

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

281 address *return_path;

282 GList *rcpt_list;

283 GList *non_rcpt_list;

285 GList *hdr_list;

286 GList *data_list;

288 gint data_size;

289 time_t received_time;

290 time_t warned_time;

292 gchar *full_sender_name;

293 } message;

295 typedef struct _msg_out {

296 message *msg;

298 address *return_path;

299 GList *rcpt_list;

301 GList *hdr_list;

302 GList *xtra_hdr_list;

303 } msg_out;

305 typedef struct _msgout_perhost {

306 gchar *host;

307 GList *msgout_list;

308 } msgout_perhost;

310 /* flags for accept() */

311 /*#define ACC_LOCAL 0x01 (we better use received_host == NULL) */

312 #define ACC_DEL_RCPTS 0x02 /* -t option, delete rcpts */

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

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

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

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

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

319 #define DLVR_LOCAL 0x01

320 #define DLVR_LAN 0x02

321 #define DLVR_ONLINE 0x04

322 #define DLVR_ALL (DLVR_LOCAL|DLVR_LAN|DLVR_ONLINE)

324 /* transport flags */

325 #define MSGSTR_FROMLINE 0x01

326 #define MSGSTR_FROMHACK 0x02

328 typedef enum _accept_error {

329 AERR_OK = 0,

330 AERR_TIMEOUT,

331 AERR_EOF,

332 AERR_OVERFLOW,

333 AERR_SYNTAX,

334 AERR_NOSPOOL,

335 AERR_NORCPT,

336 AERR_UNKNOWN

337 } accept_error;

339 #define BUF_LEN 1024

340 #define MAX_ADDRESS 256

341 #define MAX_DATALINE 4096

343 typedef enum _smtp_cmd_id {

344 SMTP_HELO = 0,

345 SMTP_EHLO,

346 SMTP_MAIL_FROM,

347 SMTP_RCPT_TO,

348 SMTP_DATA,

349 SMTP_QUIT,

350 SMTP_RSET,

351 SMTP_NOOP,

352 SMTP_HELP,

353 SMTP_NUM_IDS,

354 SMTP_EOF = -1,

355 SMTP_ERROR = -2,

356 } smtp_cmd_id;

358 typedef struct _smtp_cmd {

359 smtp_cmd_id id;

360 gchar *cmd;

361 } smtp_cmd;

363 typedef struct _smtp_connection {

364 gchar *remote_host;

366 prot_id prot;

367 gint next_id;

369 gboolean helo_seen;

370 gboolean from_seen;

371 gboolean rcpt_seen;

373 message *msg;

374 } smtp_connection;

376 /* alias.c*/

377 gboolean addr_is_local(address * addr);

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

380 /* child.c */

381 int child(const char *command);

383 /* conf.c */

384 void init_conf();

385 gboolean read_conf(gchar * filename);

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

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

388 void destroy_route(connect_route * r);

389 void destroy_route_list(GList * list);

390 get_conf *read_get_conf(gchar * filename);

391 void destroy_get_conf(get_conf * gc);

392 connect_route *create_local_route();

394 /* expand.c */

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

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

397 GList *var_table_conf(GList * var_table);

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

400 /* message.c */

401 message *create_message(void);

402 void destroy_message(message * msg);

403 void destroy_msg_list(GList * msg_list);

404 void msg_free_data(message * msg);

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

407 msg_out *create_msg_out(message * msg);

408 msg_out *clone_msg_out(msg_out * msgout_orig);

409 GList *create_msg_out_list(GList * msg_list);

410 void destroy_msg_out(msg_out * msgout);

411 void destroy_msg_out_list(GList * msgout_list);

413 /* address.c */

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

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

416 address *create_address_pipe(gchar * path);

417 void destroy_address(address * addr);

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

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

420 gboolean addr_isequal(address * addr1, address * addr2);

421 gboolean addr_isequal_parent(address * addr1, address * addr2);

422 address *addr_find_ancestor(address * addr);

423 gboolean addr_is_delivered_children(address * addr);

424 gboolean addr_is_finished_children(address * addr);

425 gchar *addr_string(address * addr);

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

428 /* accept.c */

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

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

432 /* header.c */

433 gchar *rec_timestamp();

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

435 void header_unfold(header * hdr);

436 void header_fold(header * hdr);

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

438 void destroy_header(header * hdr);

439 header *copy_header(header * hdr);

440 header *get_header(gchar * line);

442 /* smtp_in.c */

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

445 /* listen.c */

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

448 /* parse.c */

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

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

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

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

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

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

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

456 gboolean addr_isequal(address * addr1, address * addr2);

458 /* connect.c */

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

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

462 /* deliver.c */

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

464 gboolean deliver_local(msg_out * msgout);

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

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

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

468 gboolean deliver_finish(msg_out * msgout);

469 gboolean deliver_finish_list(GList * msgout_list);

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

471 gboolean deliver(message * msg);

473 /* fail_msg.c */

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

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

477 /* get.c */

478 gboolean get_from_file(gchar * fname);

479 gboolean get_from_name(gchar * name);

480 gboolean get_all(void);

481 void get_online(void);

482 void get_daemon(gint gival, char *argv[]);

483 gboolean pop_before_smtp(gchar * fname);

485 /* interface.c */

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

487 int make_server_socket(interface * iface);

489 /* local.c */

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

491 gboolean maildir_out(message * msg, GList * hdr_list, gchar * user, guint flags);

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

494 /* log.c */

495 gchar *ext_strerror(int err);

496 gboolean logopen(void);

497 void logclose(void);

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

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

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

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

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

504 /* spool.c */

505 gboolean spool_read_data(message * msg);

506 gboolean spool_read_data(message * msg);

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

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

509 gboolean spool_lock(gchar * uid);

510 gboolean spool_unlock(gchar * uid);

511 gboolean spool_delete_all(message * msg);

513 /* queue.c */

514 GList *read_queue(gboolean do_readdata);

515 gboolean queue_run(void);

516 gboolean queue_run_online(void);

517 void queue_list(void);

518 gboolean queue_delete(gchar * uid);

520 /* online.c */

521 gchar *detect_online();

522 void set_online_name(gchar * name);

524 /* permissions.c */

525 gboolean is_ingroup(uid_t uid, gid_t gid);

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

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

529 /* rewrite.c */

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

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

533 /* route.c */

534 msgout_perhost *create_msgout_perhost(gchar * host);

535 void destroy_msgout_perhost(msgout_perhost * mo_ph);

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

537 void rcptlist_with_one_of_hostlist(GList * rcpt_list, GList * host_list, GList **, GList **);

538 void rcptlist_with_addr_is_local(GList * rcpt_list, GList ** p_rcpt_list, GList ** p_non_rcpt_list);

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

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

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

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

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

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

546 /* tables.c */

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

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

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

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

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

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

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

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

555 void destroy_table(GList * table);

557 /* timeival.c */

558 gint time_interval(gchar * str, gint * pos);

560 /* permissions.c */

561 gboolean is_privileged_user(uid_t uid);

563 /* other things */

565 #define foreach(list, node)\

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

567 (node);\

568 (node) = g_list_next(node))

570 #ifdef ENABLE_DEBUG

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

572 #else

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

574 #define DEBUG(level) if(0)

575 #endif

577 #define LOG_VERBOSE 0x100

579 #ifndef HAVE_GETLINE

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

581 #endif

583 #ifndef HAVE_FDATASYNC

584 #define fdatasync(fd) fsync(fd)

585 #endif

587 #ifndef CONF_DIR

588 #define CONF_DIR "/etc/masqmail"

589 #endif

591 #define CONF_FILE CONF_DIR"/masqmail.conf"

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

595 #ifndef va_copy

596 #ifdef __va_copy

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

598 #else

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

600 #endif

601 #endif

603 /* *BSD needs this: */

604 extern char **environ;