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Some better parse-options documentation.
[alt-git.git] / imap-send.c
bloba429a76a6385bb7d7935cfaddec9cfc8508c77e5
1 /*
2 * git-imap-send - drops patches into an imap Drafts folder
3 * derived from isync/mbsync - mailbox synchronizer
4 *
5 * Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
6 * Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
7 * Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
8 * Copyright (C) 2006 Mike McCormack
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #include "cache.h"
26
27 typedef struct store_conf {
28 char *name;
29 const char *path; /* should this be here? its interpretation is driver-specific */
30 char *map_inbox;
31 char *trash;
32 unsigned max_size; /* off_t is overkill */
33 unsigned trash_remote_new:1, trash_only_new:1;
34 } store_conf_t;
35
36 typedef struct string_list {
37 struct string_list *next;
38 char string[1];
39 } string_list_t;
40
41 typedef struct channel_conf {
42 struct channel_conf *next;
43 char *name;
44 store_conf_t *master, *slave;
45 char *master_name, *slave_name;
46 char *sync_state;
47 string_list_t *patterns;
48 int mops, sops;
49 unsigned max_messages; /* for slave only */
50 } channel_conf_t;
51
52 typedef struct group_conf {
53 struct group_conf *next;
54 char *name;
55 string_list_t *channels;
56 } group_conf_t;
57
58 /* For message->status */
59 #define M_RECENT (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
60 #define M_DEAD (1<<1) /* expunged */
61 #define M_FLAGS (1<<2) /* flags fetched */
62
63 typedef struct message {
64 struct message *next;
65 /* string_list_t *keywords; */
66 size_t size; /* zero implies "not fetched" */
67 int uid;
68 unsigned char flags, status;
69 } message_t;
70
71 typedef struct store {
72 store_conf_t *conf; /* foreign */
73
74 /* currently open mailbox */
75 const char *name; /* foreign! maybe preset? */
76 char *path; /* own */
77 message_t *msgs; /* own */
78 int uidvalidity;
79 unsigned char opts; /* maybe preset? */
80 /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
81 int count; /* # of messages */
82 int recent; /* # of recent messages - don't trust this beyond the initial read */
83 } store_t;
84
85 typedef struct {
86 char *data;
87 int len;
88 unsigned char flags;
89 unsigned int crlf:1;
90 } msg_data_t;
91
92 #define DRV_OK 0
93 #define DRV_MSG_BAD -1
94 #define DRV_BOX_BAD -2
95 #define DRV_STORE_BAD -3
96
97 static int Verbose, Quiet;
98
99 static void imap_info( const char *, ... );
100 static void imap_warn( const char *, ... );
101
102 static char *next_arg( char ** );
103
104 static void free_generic_messages( message_t * );
105
106 static int nfsnprintf( char *buf, int blen, const char *fmt, ... );
107
108 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
109 {
110 int len;
111 char tmp[8192];
112
113 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
114 if (len < 0)
115 die("Fatal: Out of memory\n");
116 if (len >= sizeof(tmp))
117 die("imap command overflow !\n");
118 *strp = xmemdupz(tmp, len);
119 return len;
120 }
121
122 static void arc4_init( void );
123 static unsigned char arc4_getbyte( void );
124
125 typedef struct imap_server_conf {
126 char *name;
127 char *tunnel;
128 char *host;
129 int port;
130 char *user;
131 char *pass;
132 } imap_server_conf_t;
133
134 typedef struct imap_store_conf {
135 store_conf_t gen;
136 imap_server_conf_t *server;
137 unsigned use_namespace:1;
138 } imap_store_conf_t;
139
140 #define NIL (void*)0x1
141 #define LIST (void*)0x2
142
143 typedef struct _list {
144 struct _list *next, *child;
145 char *val;
146 int len;
147 } list_t;
148
149 typedef struct {
150 int fd;
151 } Socket_t;
152
153 typedef struct {
154 Socket_t sock;
155 int bytes;
156 int offset;
157 char buf[1024];
158 } buffer_t;
159
160 struct imap_cmd;
161
162 typedef struct imap {
163 int uidnext; /* from SELECT responses */
164 list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
165 unsigned caps, rcaps; /* CAPABILITY results */
166 /* command queue */
167 int nexttag, num_in_progress, literal_pending;
168 struct imap_cmd *in_progress, **in_progress_append;
169 buffer_t buf; /* this is BIG, so put it last */
170 } imap_t;
171
172 typedef struct imap_store {
173 store_t gen;
174 int uidvalidity;
175 imap_t *imap;
176 const char *prefix;
177 unsigned /*currentnc:1,*/ trashnc:1;
178 } imap_store_t;
179
180 struct imap_cmd_cb {
181 int (*cont)( imap_store_t *ctx, struct imap_cmd *cmd, const char *prompt );
182 void (*done)( imap_store_t *ctx, struct imap_cmd *cmd, int response);
183 void *ctx;
184 char *data;
185 int dlen;
186 int uid;
187 unsigned create:1, trycreate:1;
188 };
189
190 struct imap_cmd {
191 struct imap_cmd *next;
192 struct imap_cmd_cb cb;
193 char *cmd;
194 int tag;
195 };
196
197 #define CAP(cap) (imap->caps & (1 << (cap)))
198
199 enum CAPABILITY {
200 NOLOGIN = 0,
201 UIDPLUS,
202 LITERALPLUS,
203 NAMESPACE,
204 };
205
206 static const char *cap_list[] = {
207 "LOGINDISABLED",
208 "UIDPLUS",
209 "LITERAL+",
210 "NAMESPACE",
211 };
212
213 #define RESP_OK 0
214 #define RESP_NO 1
215 #define RESP_BAD 2
216
217 static int get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd );
218
219
220 static const char *Flags[] = {
221 "Draft",
222 "Flagged",
223 "Answered",
224 "Seen",
225 "Deleted",
226 };
227
228 static void
229 socket_perror( const char *func, Socket_t *sock, int ret )
230 {
231 if (ret < 0)
232 perror( func );
233 else
234 fprintf( stderr, "%s: unexpected EOF\n", func );
235 }
236
237 static int
238 socket_read( Socket_t *sock, char *buf, int len )
239 {
240 ssize_t n = xread( sock->fd, buf, len );
241 if (n <= 0) {
242 socket_perror( "read", sock, n );
243 close( sock->fd );
244 sock->fd = -1;
245 }
246 return n;
247 }
248
249 static int
250 socket_write( Socket_t *sock, const char *buf, int len )
251 {
252 int n = write_in_full( sock->fd, buf, len );
253 if (n != len) {
254 socket_perror( "write", sock, n );
255 close( sock->fd );
256 sock->fd = -1;
257 }
258 return n;
259 }
260
261 /* simple line buffering */
262 static int
263 buffer_gets( buffer_t * b, char **s )
264 {
265 int n;
266 int start = b->offset;
267
268 *s = b->buf + start;
269
270 for (;;) {
271 /* make sure we have enough data to read the \r\n sequence */
272 if (b->offset + 1 >= b->bytes) {
273 if (start) {
274 /* shift down used bytes */
275 *s = b->buf;
276
277 assert( start <= b->bytes );
278 n = b->bytes - start;
279
280 if (n)
281 memmove(b->buf, b->buf + start, n);
282 b->offset -= start;
283 b->bytes = n;
284 start = 0;
285 }
286
287 n = socket_read( &b->sock, b->buf + b->bytes,
288 sizeof(b->buf) - b->bytes );
289
290 if (n <= 0)
291 return -1;
292
293 b->bytes += n;
294 }
295
296 if (b->buf[b->offset] == '\r') {
297 assert( b->offset + 1 < b->bytes );
298 if (b->buf[b->offset + 1] == '\n') {
299 b->buf[b->offset] = 0; /* terminate the string */
300 b->offset += 2; /* next line */
301 if (Verbose)
302 puts( *s );
303 return 0;
304 }
305 }
306
307 b->offset++;
308 }
309 /* not reached */
310 }
311
312 static void
313 imap_info( const char *msg, ... )
314 {
315 va_list va;
316
317 if (!Quiet) {
318 va_start( va, msg );
319 vprintf( msg, va );
320 va_end( va );
321 fflush( stdout );
322 }
323 }
324
325 static void
326 imap_warn( const char *msg, ... )
327 {
328 va_list va;
329
330 if (Quiet < 2) {
331 va_start( va, msg );
332 vfprintf( stderr, msg, va );
333 va_end( va );
334 }
335 }
336
337 static char *
338 next_arg( char **s )
339 {
340 char *ret;
341
342 if (!s || !*s)
343 return NULL;
344 while (isspace( (unsigned char) **s ))
345 (*s)++;
346 if (!**s) {
347 *s = NULL;
348 return NULL;
349 }
350 if (**s == '"') {
351 ++*s;
352 ret = *s;
353 *s = strchr( *s, '"' );
354 } else {
355 ret = *s;
356 while (**s && !isspace( (unsigned char) **s ))
357 (*s)++;
358 }
359 if (*s) {
360 if (**s)
361 *(*s)++ = 0;
362 if (!**s)
363 *s = NULL;
364 }
365 return ret;
366 }
367
368 static void
369 free_generic_messages( message_t *msgs )
370 {
371 message_t *tmsg;
372
373 for (; msgs; msgs = tmsg) {
374 tmsg = msgs->next;
375 free( msgs );
376 }
377 }
378
379 static int
380 nfsnprintf( char *buf, int blen, const char *fmt, ... )
381 {
382 int ret;
383 va_list va;
384
385 va_start( va, fmt );
386 if (blen <= 0 || (unsigned)(ret = vsnprintf( buf, blen, fmt, va )) >= (unsigned)blen)
387 die( "Fatal: buffer too small. Please report a bug.\n");
388 va_end( va );
389 return ret;
390 }
391
392 static struct {
393 unsigned char i, j, s[256];
394 } rs;
395
396 static void
397 arc4_init( void )
398 {
399 int i, fd;
400 unsigned char j, si, dat[128];
401
402 if ((fd = open( "/dev/urandom", O_RDONLY )) < 0 && (fd = open( "/dev/random", O_RDONLY )) < 0) {
403 fprintf( stderr, "Fatal: no random number source available.\n" );
404 exit( 3 );
405 }
406 if (read_in_full( fd, dat, 128 ) != 128) {
407 fprintf( stderr, "Fatal: cannot read random number source.\n" );
408 exit( 3 );
409 }
410 close( fd );
411
412 for (i = 0; i < 256; i++)
413 rs.s[i] = i;
414 for (i = j = 0; i < 256; i++) {
415 si = rs.s[i];
416 j += si + dat[i & 127];
417 rs.s[i] = rs.s[j];
418 rs.s[j] = si;
419 }
420 rs.i = rs.j = 0;
421
422 for (i = 0; i < 256; i++)
423 arc4_getbyte();
424 }
425
426 static unsigned char
427 arc4_getbyte( void )
428 {
429 unsigned char si, sj;
430
431 rs.i++;
432 si = rs.s[rs.i];
433 rs.j += si;
434 sj = rs.s[rs.j];
435 rs.s[rs.i] = sj;
436 rs.s[rs.j] = si;
437 return rs.s[(si + sj) & 0xff];
438 }
439
440 static struct imap_cmd *
441 v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
442 const char *fmt, va_list ap )
443 {
444 imap_t *imap = ctx->imap;
445 struct imap_cmd *cmd;
446 int n, bufl;
447 char buf[1024];
448
449 cmd = xmalloc( sizeof(struct imap_cmd) );
450 nfvasprintf( &cmd->cmd, fmt, ap );
451 cmd->tag = ++imap->nexttag;
452
453 if (cb)
454 cmd->cb = *cb;
455 else
456 memset( &cmd->cb, 0, sizeof(cmd->cb) );
457
458 while (imap->literal_pending)
459 get_cmd_result( ctx, NULL );
460
461 bufl = nfsnprintf( buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
462 "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
463 cmd->tag, cmd->cmd, cmd->cb.dlen );
464 if (Verbose) {
465 if (imap->num_in_progress)
466 printf( "(%d in progress) ", imap->num_in_progress );
467 if (memcmp( cmd->cmd, "LOGIN", 5 ))
468 printf( ">>> %s", buf );
469 else
470 printf( ">>> %d LOGIN <user> <pass>\n", cmd->tag );
471 }
472 if (socket_write( &imap->buf.sock, buf, bufl ) != bufl) {
473 free( cmd->cmd );
474 free( cmd );
475 if (cb && cb->data)
476 free( cb->data );
477 return NULL;
478 }
479 if (cmd->cb.data) {
480 if (CAP(LITERALPLUS)) {
481 n = socket_write( &imap->buf.sock, cmd->cb.data, cmd->cb.dlen );
482 free( cmd->cb.data );
483 if (n != cmd->cb.dlen ||
484 (n = socket_write( &imap->buf.sock, "\r\n", 2 )) != 2)
485 {
486 free( cmd->cmd );
487 free( cmd );
488 return NULL;
489 }
490 cmd->cb.data = NULL;
491 } else
492 imap->literal_pending = 1;
493 } else if (cmd->cb.cont)
494 imap->literal_pending = 1;
495 cmd->next = NULL;
496 *imap->in_progress_append = cmd;
497 imap->in_progress_append = &cmd->next;
498 imap->num_in_progress++;
499 return cmd;
500 }
501
502 static struct imap_cmd *
503 issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
504 {
505 struct imap_cmd *ret;
506 va_list ap;
507
508 va_start( ap, fmt );
509 ret = v_issue_imap_cmd( ctx, cb, fmt, ap );
510 va_end( ap );
511 return ret;
512 }
513
514 static int
515 imap_exec( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
516 {
517 va_list ap;
518 struct imap_cmd *cmdp;
519
520 va_start( ap, fmt );
521 cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
522 va_end( ap );
523 if (!cmdp)
524 return RESP_BAD;
525
526 return get_cmd_result( ctx, cmdp );
527 }
528
529 static int
530 imap_exec_m( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
531 {
532 va_list ap;
533 struct imap_cmd *cmdp;
534
535 va_start( ap, fmt );
536 cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
537 va_end( ap );
538 if (!cmdp)
539 return DRV_STORE_BAD;
540
541 switch (get_cmd_result( ctx, cmdp )) {
542 case RESP_BAD: return DRV_STORE_BAD;
543 case RESP_NO: return DRV_MSG_BAD;
544 default: return DRV_OK;
545 }
546 }
547
548 static int
549 is_atom( list_t *list )
550 {
551 return list && list->val && list->val != NIL && list->val != LIST;
552 }
553
554 static int
555 is_list( list_t *list )
556 {
557 return list && list->val == LIST;
558 }
559
560 static void
561 free_list( list_t *list )
562 {
563 list_t *tmp;
564
565 for (; list; list = tmp) {
566 tmp = list->next;
567 if (is_list( list ))
568 free_list( list->child );
569 else if (is_atom( list ))
570 free( list->val );
571 free( list );
572 }
573 }
574
575 static int
576 parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
577 {
578 list_t *cur;
579 char *s = *sp, *p;
580 int n, bytes;
581
582 for (;;) {
583 while (isspace( (unsigned char)*s ))
584 s++;
585 if (level && *s == ')') {
586 s++;
587 break;
588 }
589 *curp = cur = xmalloc( sizeof(*cur) );
590 curp = &cur->next;
591 cur->val = NULL; /* for clean bail */
592 if (*s == '(') {
593 /* sublist */
594 s++;
595 cur->val = LIST;
596 if (parse_imap_list_l( imap, &s, &cur->child, level + 1 ))
597 goto bail;
598 } else if (imap && *s == '{') {
599 /* literal */
600 bytes = cur->len = strtol( s + 1, &s, 10 );
601 if (*s != '}')
602 goto bail;
603
604 s = cur->val = xmalloc( cur->len );
605
606 /* dump whats left over in the input buffer */
607 n = imap->buf.bytes - imap->buf.offset;
608
609 if (n > bytes)
610 /* the entire message fit in the buffer */
611 n = bytes;
612
613 memcpy( s, imap->buf.buf + imap->buf.offset, n );
614 s += n;
615 bytes -= n;
616
617 /* mark that we used part of the buffer */
618 imap->buf.offset += n;
619
620 /* now read the rest of the message */
621 while (bytes > 0) {
622 if ((n = socket_read (&imap->buf.sock, s, bytes)) <= 0)
623 goto bail;
624 s += n;
625 bytes -= n;
626 }
627
628 if (buffer_gets( &imap->buf, &s ))
629 goto bail;
630 } else if (*s == '"') {
631 /* quoted string */
632 s++;
633 p = s;
634 for (; *s != '"'; s++)
635 if (!*s)
636 goto bail;
637 cur->len = s - p;
638 s++;
639 cur->val = xmemdupz(p, cur->len);
640 } else {
641 /* atom */
642 p = s;
643 for (; *s && !isspace( (unsigned char)*s ); s++)
644 if (level && *s == ')')
645 break;
646 cur->len = s - p;
647 if (cur->len == 3 && !memcmp ("NIL", p, 3)) {
648 cur->val = NIL;
649 } else {
650 cur->val = xmemdupz(p, cur->len);
651 }
652 }
653
654 if (!level)
655 break;
656 if (!*s)
657 goto bail;
658 }
659 *sp = s;
660 *curp = NULL;
661 return 0;
662
663 bail:
664 *curp = NULL;
665 return -1;
666 }
667
668 static list_t *
669 parse_imap_list( imap_t *imap, char **sp )
670 {
671 list_t *head;
672
673 if (!parse_imap_list_l( imap, sp, &head, 0 ))
674 return head;
675 free_list( head );
676 return NULL;
677 }
678
679 static list_t *
680 parse_list( char **sp )
681 {
682 return parse_imap_list( NULL, sp );
683 }
684
685 static void
686 parse_capability( imap_t *imap, char *cmd )
687 {
688 char *arg;
689 unsigned i;
690
691 imap->caps = 0x80000000;
692 while ((arg = next_arg( &cmd )))
693 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
694 if (!strcmp( cap_list[i], arg ))
695 imap->caps |= 1 << i;
696 imap->rcaps = imap->caps;
697 }
698
699 static int
700 parse_response_code( imap_store_t *ctx, struct imap_cmd_cb *cb, char *s )
701 {
702 imap_t *imap = ctx->imap;
703 char *arg, *p;
704
705 if (*s != '[')
706 return RESP_OK; /* no response code */
707 s++;
708 if (!(p = strchr( s, ']' ))) {
709 fprintf( stderr, "IMAP error: malformed response code\n" );
710 return RESP_BAD;
711 }
712 *p++ = 0;
713 arg = next_arg( &s );
714 if (!strcmp( "UIDVALIDITY", arg )) {
715 if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg ))) {
716 fprintf( stderr, "IMAP error: malformed UIDVALIDITY status\n" );
717 return RESP_BAD;
718 }
719 } else if (!strcmp( "UIDNEXT", arg )) {
720 if (!(arg = next_arg( &s )) || !(imap->uidnext = atoi( arg ))) {
721 fprintf( stderr, "IMAP error: malformed NEXTUID status\n" );
722 return RESP_BAD;
723 }
724 } else if (!strcmp( "CAPABILITY", arg )) {
725 parse_capability( imap, s );
726 } else if (!strcmp( "ALERT", arg )) {
727 /* RFC2060 says that these messages MUST be displayed
728 * to the user
729 */
730 for (; isspace( (unsigned char)*p ); p++);
731 fprintf( stderr, "*** IMAP ALERT *** %s\n", p );
732 } else if (cb && cb->ctx && !strcmp( "APPENDUID", arg )) {
733 if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg )) ||
734 !(arg = next_arg( &s )) || !(*(int *)cb->ctx = atoi( arg )))
735 {
736 fprintf( stderr, "IMAP error: malformed APPENDUID status\n" );
737 return RESP_BAD;
738 }
739 }
740 return RESP_OK;
741 }
742
743 static int
744 get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
745 {
746 imap_t *imap = ctx->imap;
747 struct imap_cmd *cmdp, **pcmdp, *ncmdp;
748 char *cmd, *arg, *arg1, *p;
749 int n, resp, resp2, tag;
750
751 for (;;) {
752 if (buffer_gets( &imap->buf, &cmd ))
753 return RESP_BAD;
754
755 arg = next_arg( &cmd );
756 if (*arg == '*') {
757 arg = next_arg( &cmd );
758 if (!arg) {
759 fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
760 return RESP_BAD;
761 }
762
763 if (!strcmp( "NAMESPACE", arg )) {
764 imap->ns_personal = parse_list( &cmd );
765 imap->ns_other = parse_list( &cmd );
766 imap->ns_shared = parse_list( &cmd );
767 } else if (!strcmp( "OK", arg ) || !strcmp( "BAD", arg ) ||
768 !strcmp( "NO", arg ) || !strcmp( "BYE", arg )) {
769 if ((resp = parse_response_code( ctx, NULL, cmd )) != RESP_OK)
770 return resp;
771 } else if (!strcmp( "CAPABILITY", arg ))
772 parse_capability( imap, cmd );
773 else if ((arg1 = next_arg( &cmd ))) {
774 if (!strcmp( "EXISTS", arg1 ))
775 ctx->gen.count = atoi( arg );
776 else if (!strcmp( "RECENT", arg1 ))
777 ctx->gen.recent = atoi( arg );
778 } else {
779 fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
780 return RESP_BAD;
781 }
782 } else if (!imap->in_progress) {
783 fprintf( stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "" );
784 return RESP_BAD;
785 } else if (*arg == '+') {
786 /* This can happen only with the last command underway, as
787 it enforces a round-trip. */
788 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
789 offsetof(struct imap_cmd, next));
790 if (cmdp->cb.data) {
791 n = socket_write( &imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen );
792 free( cmdp->cb.data );
793 cmdp->cb.data = NULL;
794 if (n != (int)cmdp->cb.dlen)
795 return RESP_BAD;
796 } else if (cmdp->cb.cont) {
797 if (cmdp->cb.cont( ctx, cmdp, cmd ))
798 return RESP_BAD;
799 } else {
800 fprintf( stderr, "IMAP error: unexpected command continuation request\n" );
801 return RESP_BAD;
802 }
803 if (socket_write( &imap->buf.sock, "\r\n", 2 ) != 2)
804 return RESP_BAD;
805 if (!cmdp->cb.cont)
806 imap->literal_pending = 0;
807 if (!tcmd)
808 return DRV_OK;
809 } else {
810 tag = atoi( arg );
811 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
812 if (cmdp->tag == tag)
813 goto gottag;
814 fprintf( stderr, "IMAP error: unexpected tag %s\n", arg );
815 return RESP_BAD;
816 gottag:
817 if (!(*pcmdp = cmdp->next))
818 imap->in_progress_append = pcmdp;
819 imap->num_in_progress--;
820 if (cmdp->cb.cont || cmdp->cb.data)
821 imap->literal_pending = 0;
822 arg = next_arg( &cmd );
823 if (!strcmp( "OK", arg ))
824 resp = DRV_OK;
825 else {
826 if (!strcmp( "NO", arg )) {
827 if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp( cmd, "[TRYCREATE]", 11 ))) { /* SELECT, APPEND or UID COPY */
828 p = strchr( cmdp->cmd, '"' );
829 if (!issue_imap_cmd( ctx, NULL, "CREATE \"%.*s\"", strchr( p + 1, '"' ) - p + 1, p )) {
830 resp = RESP_BAD;
831 goto normal;
832 }
833 /* not waiting here violates the spec, but a server that does not
834 grok this nonetheless violates it too. */
835 cmdp->cb.create = 0;
836 if (!(ncmdp = issue_imap_cmd( ctx, &cmdp->cb, "%s", cmdp->cmd ))) {
837 resp = RESP_BAD;
838 goto normal;
839 }
840 free( cmdp->cmd );
841 free( cmdp );
842 if (!tcmd)
843 return 0; /* ignored */
844 if (cmdp == tcmd)
845 tcmd = ncmdp;
846 continue;
847 }
848 resp = RESP_NO;
849 } else /*if (!strcmp( "BAD", arg ))*/
850 resp = RESP_BAD;
851 fprintf( stderr, "IMAP command '%s' returned response (%s) - %s\n",
852 memcmp (cmdp->cmd, "LOGIN", 5) ?
853 cmdp->cmd : "LOGIN <user> <pass>",
854 arg, cmd ? cmd : "");
855 }
856 if ((resp2 = parse_response_code( ctx, &cmdp->cb, cmd )) > resp)
857 resp = resp2;
858 normal:
859 if (cmdp->cb.done)
860 cmdp->cb.done( ctx, cmdp, resp );
861 if (cmdp->cb.data)
862 free( cmdp->cb.data );
863 free( cmdp->cmd );
864 free( cmdp );
865 if (!tcmd || tcmd == cmdp)
866 return resp;
867 }
868 }
869 /* not reached */
870 }
871
872 static void
873 imap_close_server( imap_store_t *ictx )
874 {
875 imap_t *imap = ictx->imap;
876
877 if (imap->buf.sock.fd != -1) {
878 imap_exec( ictx, NULL, "LOGOUT" );
879 close( imap->buf.sock.fd );
880 }
881 free_list( imap->ns_personal );
882 free_list( imap->ns_other );
883 free_list( imap->ns_shared );
884 free( imap );
885 }
886
887 static void
888 imap_close_store( store_t *ctx )
889 {
890 imap_close_server( (imap_store_t *)ctx );
891 free_generic_messages( ctx->msgs );
892 free( ctx );
893 }
894
895 static store_t *
896 imap_open_store( imap_server_conf_t *srvc )
897 {
898 imap_store_t *ctx;
899 imap_t *imap;
900 char *arg, *rsp;
901 struct hostent *he;
902 struct sockaddr_in addr;
903 int s, a[2], preauth;
904 pid_t pid;
905
906 ctx = xcalloc( sizeof(*ctx), 1 );
907
908 ctx->imap = imap = xcalloc( sizeof(*imap), 1 );
909 imap->buf.sock.fd = -1;
910 imap->in_progress_append = &imap->in_progress;
911
912 /* open connection to IMAP server */
913
914 if (srvc->tunnel) {
915 imap_info( "Starting tunnel '%s'... ", srvc->tunnel );
916
917 if (socketpair( PF_UNIX, SOCK_STREAM, 0, a )) {
918 perror( "socketpair" );
919 exit( 1 );
920 }
921
922 pid = fork();
923 if (pid < 0)
924 _exit( 127 );
925 if (!pid) {
926 if (dup2( a[0], 0 ) == -1 || dup2( a[0], 1 ) == -1)
927 _exit( 127 );
928 close( a[0] );
929 close( a[1] );
930 execl( "/bin/sh", "sh", "-c", srvc->tunnel, NULL );
931 _exit( 127 );
932 }
933
934 close (a[0]);
935
936 imap->buf.sock.fd = a[1];
937
938 imap_info( "ok\n" );
939 } else {
940 memset( &addr, 0, sizeof(addr) );
941 addr.sin_port = htons( srvc->port );
942 addr.sin_family = AF_INET;
943
944 imap_info( "Resolving %s... ", srvc->host );
945 he = gethostbyname( srvc->host );
946 if (!he) {
947 perror( "gethostbyname" );
948 goto bail;
949 }
950 imap_info( "ok\n" );
951
952 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
953
954 s = socket( PF_INET, SOCK_STREAM, 0 );
955
956 imap_info( "Connecting to %s:%hu... ", inet_ntoa( addr.sin_addr ), ntohs( addr.sin_port ) );
957 if (connect( s, (struct sockaddr *)&addr, sizeof(addr) )) {
958 close( s );
959 perror( "connect" );
960 goto bail;
961 }
962 imap_info( "ok\n" );
963
964 imap->buf.sock.fd = s;
965
966 }
967
968 /* read the greeting string */
969 if (buffer_gets( &imap->buf, &rsp )) {
970 fprintf( stderr, "IMAP error: no greeting response\n" );
971 goto bail;
972 }
973 arg = next_arg( &rsp );
974 if (!arg || *arg != '*' || (arg = next_arg( &rsp )) == NULL) {
975 fprintf( stderr, "IMAP error: invalid greeting response\n" );
976 goto bail;
977 }
978 preauth = 0;
979 if (!strcmp( "PREAUTH", arg ))
980 preauth = 1;
981 else if (strcmp( "OK", arg ) != 0) {
982 fprintf( stderr, "IMAP error: unknown greeting response\n" );
983 goto bail;
984 }
985 parse_response_code( ctx, NULL, rsp );
986 if (!imap->caps && imap_exec( ctx, NULL, "CAPABILITY" ) != RESP_OK)
987 goto bail;
988
989 if (!preauth) {
990
991 imap_info ("Logging in...\n");
992 if (!srvc->user) {
993 fprintf( stderr, "Skipping server %s, no user\n", srvc->host );
994 goto bail;
995 }
996 if (!srvc->pass) {
997 char prompt[80];
998 sprintf( prompt, "Password (%s@%s): ", srvc->user, srvc->host );
999 arg = getpass( prompt );
1000 if (!arg) {
1001 perror( "getpass" );
1002 exit( 1 );
1003 }
1004 if (!*arg) {
1005 fprintf( stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host );
1006 goto bail;
1007 }
1008 /*
1009 * getpass() returns a pointer to a static buffer. make a copy
1010 * for long term storage.
1011 */
1012 srvc->pass = xstrdup( arg );
1013 }
1014 if (CAP(NOLOGIN)) {
1015 fprintf( stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host );
1016 goto bail;
1017 }
1018 imap_warn( "*** IMAP Warning *** Password is being sent in the clear\n" );
1019 if (imap_exec( ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass ) != RESP_OK) {
1020 fprintf( stderr, "IMAP error: LOGIN failed\n" );
1021 goto bail;
1022 }
1023 } /* !preauth */
1024
1025 ctx->prefix = "";
1026 ctx->trashnc = 1;
1027 return (store_t *)ctx;
1028
1029 bail:
1030 imap_close_store( &ctx->gen );
1031 return NULL;
1032 }
1033
1034 static int
1035 imap_make_flags( int flags, char *buf )
1036 {
1037 const char *s;
1038 unsigned i, d;
1039
1040 for (i = d = 0; i < ARRAY_SIZE(Flags); i++)
1041 if (flags & (1 << i)) {
1042 buf[d++] = ' ';
1043 buf[d++] = '\\';
1044 for (s = Flags[i]; *s; s++)
1045 buf[d++] = *s;
1046 }
1047 buf[0] = '(';
1048 buf[d++] = ')';
1049 return d;
1050 }
1051
1052 #define TUIDL 8
1053
1054 static int
1055 imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
1056 {
1057 imap_store_t *ctx = (imap_store_t *)gctx;
1058 imap_t *imap = ctx->imap;
1059 struct imap_cmd_cb cb;
1060 char *fmap, *buf;
1061 const char *prefix, *box;
1062 int ret, i, j, d, len, extra, nocr;
1063 int start, sbreak = 0, ebreak = 0;
1064 char flagstr[128], tuid[TUIDL * 2 + 1];
1065
1066 memset( &cb, 0, sizeof(cb) );
1067
1068 fmap = data->data;
1069 len = data->len;
1070 nocr = !data->crlf;
1071 extra = 0, i = 0;
1072 if (!CAP(UIDPLUS) && uid) {
1073 nloop:
1074 start = i;
1075 while (i < len)
1076 if (fmap[i++] == '\n') {
1077 extra += nocr;
1078 if (i - 2 + nocr == start) {
1079 sbreak = ebreak = i - 2 + nocr;
1080 goto mktid;
1081 }
1082 if (!memcmp( fmap + start, "X-TUID: ", 8 )) {
1083 extra -= (ebreak = i) - (sbreak = start) + nocr;
1084 goto mktid;
1085 }
1086 goto nloop;
1087 }
1088 /* invalid message */
1089 free( fmap );
1090 return DRV_MSG_BAD;
1091 mktid:
1092 for (j = 0; j < TUIDL; j++)
1093 sprintf( tuid + j * 2, "%02x", arc4_getbyte() );
1094 extra += 8 + TUIDL * 2 + 2;
1095 }
1096 if (nocr)
1097 for (; i < len; i++)
1098 if (fmap[i] == '\n')
1099 extra++;
1100
1101 cb.dlen = len + extra;
1102 buf = cb.data = xmalloc( cb.dlen );
1103 i = 0;
1104 if (!CAP(UIDPLUS) && uid) {
1105 if (nocr) {
1106 for (; i < sbreak; i++)
1107 if (fmap[i] == '\n') {
1108 *buf++ = '\r';
1109 *buf++ = '\n';
1110 } else
1111 *buf++ = fmap[i];
1112 } else {
1113 memcpy( buf, fmap, sbreak );
1114 buf += sbreak;
1115 }
1116 memcpy( buf, "X-TUID: ", 8 );
1117 buf += 8;
1118 memcpy( buf, tuid, TUIDL * 2 );
1119 buf += TUIDL * 2;
1120 *buf++ = '\r';
1121 *buf++ = '\n';
1122 i = ebreak;
1123 }
1124 if (nocr) {
1125 for (; i < len; i++)
1126 if (fmap[i] == '\n') {
1127 *buf++ = '\r';
1128 *buf++ = '\n';
1129 } else
1130 *buf++ = fmap[i];
1131 } else
1132 memcpy( buf, fmap + i, len - i );
1133
1134 free( fmap );
1135
1136 d = 0;
1137 if (data->flags) {
1138 d = imap_make_flags( data->flags, flagstr );
1139 flagstr[d++] = ' ';
1140 }
1141 flagstr[d] = 0;
1142
1143 if (!uid) {
1144 box = gctx->conf->trash;
1145 prefix = ctx->prefix;
1146 cb.create = 1;
1147 if (ctx->trashnc)
1148 imap->caps = imap->rcaps & ~(1 << LITERALPLUS);
1149 } else {
1150 box = gctx->name;
1151 prefix = !strcmp( box, "INBOX" ) ? "" : ctx->prefix;
1152 cb.create = 0;
1153 }
1154 cb.ctx = uid;
1155 ret = imap_exec_m( ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr );
1156 imap->caps = imap->rcaps;
1157 if (ret != DRV_OK)
1158 return ret;
1159 if (!uid)
1160 ctx->trashnc = 0;
1161 else
1162 gctx->count++;
1163
1164 return DRV_OK;
1165 }
1166
1167 #define CHUNKSIZE 0x1000
1168
1169 static int
1170 read_message( FILE *f, msg_data_t *msg )
1171 {
1172 struct strbuf buf;
1173
1174 memset(msg, 0, sizeof(*msg));
1175 strbuf_init(&buf, 0);
1176
1177 do {
1178 if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
1179 break;
1180 } while (!feof(f));
1181
1182 msg->len = buf.len;
1183 msg->data = strbuf_detach(&buf, NULL);
1184 return msg->len;
1185 }
1186
1187 static int
1188 count_messages( msg_data_t *msg )
1189 {
1190 int count = 0;
1191 char *p = msg->data;
1192
1193 while (1) {
1194 if (!prefixcmp(p, "From ")) {
1195 count++;
1196 p += 5;
1197 }
1198 p = strstr( p+5, "\nFrom ");
1199 if (!p)
1200 break;
1201 p++;
1202 }
1203 return count;
1204 }
1205
1206 static int
1207 split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
1208 {
1209 char *p, *data;
1210
1211 memset( msg, 0, sizeof *msg );
1212 if (*ofs >= all_msgs->len)
1213 return 0;
1214
1215 data = &all_msgs->data[ *ofs ];
1216 msg->len = all_msgs->len - *ofs;
1217
1218 if (msg->len < 5 || prefixcmp(data, "From "))
1219 return 0;
1220
1221 p = strchr( data, '\n' );
1222 if (p) {
1223 p = &p[1];
1224 msg->len -= p-data;
1225 *ofs += p-data;
1226 data = p;
1227 }
1228
1229 p = strstr( data, "\nFrom " );
1230 if (p)
1231 msg->len = &p[1] - data;
1232
1233 msg->data = xmemdupz(data, msg->len);
1234 *ofs += msg->len;
1235 return 1;
1236 }
1237
1238 static imap_server_conf_t server =
1239 {
1240 NULL, /* name */
1241 NULL, /* tunnel */
1242 NULL, /* host */
1243 0, /* port */
1244 NULL, /* user */
1245 NULL, /* pass */
1246 };
1247
1248 static char *imap_folder;
1249
1250 static int
1251 git_imap_config(const char *key, const char *val)
1252 {
1253 char imap_key[] = "imap.";
1254
1255 if (strncmp( key, imap_key, sizeof imap_key - 1 ))
1256 return 0;
1257 key += sizeof imap_key - 1;
1258
1259 if (!strcmp( "folder", key )) {
1260 imap_folder = xstrdup( val );
1261 } else if (!strcmp( "host", key )) {
1262 {
1263 if (!prefixcmp(val, "imap:"))
1264 val += 5;
1265 if (!server.port)
1266 server.port = 143;
1267 }
1268 if (!prefixcmp(val, "//"))
1269 val += 2;
1270 server.host = xstrdup( val );
1271 }
1272 else if (!strcmp( "user", key ))
1273 server.user = xstrdup( val );
1274 else if (!strcmp( "pass", key ))
1275 server.pass = xstrdup( val );
1276 else if (!strcmp( "port", key ))
1277 server.port = git_config_int( key, val );
1278 else if (!strcmp( "tunnel", key ))
1279 server.tunnel = xstrdup( val );
1280 return 0;
1281 }
1282
1283 int
1284 main(int argc, char **argv)
1285 {
1286 msg_data_t all_msgs, msg;
1287 store_t *ctx = NULL;
1288 int uid = 0;
1289 int ofs = 0;
1290 int r;
1291 int total, n = 0;
1292
1293 /* init the random number generator */
1294 arc4_init();
1295
1296 git_config( git_imap_config );
1297
1298 if (!imap_folder) {
1299 fprintf( stderr, "no imap store specified\n" );
1300 return 1;
1301 }
1302
1303 /* read the messages */
1304 if (!read_message( stdin, &all_msgs )) {
1305 fprintf(stderr,"nothing to send\n");
1306 return 1;
1307 }
1308
1309 total = count_messages( &all_msgs );
1310 if (!total) {
1311 fprintf(stderr,"no messages to send\n");
1312 return 1;
1313 }
1314
1315 /* write it to the imap server */
1316 ctx = imap_open_store( &server );
1317 if (!ctx) {
1318 fprintf( stderr,"failed to open store\n");
1319 return 1;
1320 }
1321
1322 fprintf( stderr, "sending %d message%s\n", total, (total!=1)?"s":"" );
1323 ctx->name = imap_folder;
1324 while (1) {
1325 unsigned percent = n * 100 / total;
1326 fprintf( stderr, "%4u%% (%d/%d) done\r", percent, n, total );
1327 if (!split_msg( &all_msgs, &msg, &ofs ))
1328 break;
1329 r = imap_store_msg( ctx, &msg, &uid );
1330 if (r != DRV_OK) break;
1331 n++;
1332 }
1333 fprintf( stderr,"\n" );
1334
1335 imap_close_store( ctx );
1336
1337 return 0;
1338 }
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