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imap-send: Remove unused 'use_namespace' variable
[git/gitweb.git] / imap-send.c
blob57221e6bd199acd5cb80e47456e2bfe5cad37a88
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 #include <assert.h>
28 #include <netinet/in.h>
29 #include <netinet/tcp.h>
30 #include <arpa/inet.h>
31 #include <netdb.h>
32
33 typedef struct store_conf {
34 char *name;
35 const char *path; /* should this be here? its interpretation is driver-specific */
36 char *map_inbox;
37 char *trash;
38 unsigned max_size; /* off_t is overkill */
39 unsigned trash_remote_new:1, trash_only_new:1;
40 } store_conf_t;
41
42 typedef struct string_list {
43 struct string_list *next;
44 char string[1];
45 } string_list_t;
46
47 typedef struct channel_conf {
48 struct channel_conf *next;
49 char *name;
50 store_conf_t *master, *slave;
51 char *master_name, *slave_name;
52 char *sync_state;
53 string_list_t *patterns;
54 int mops, sops;
55 unsigned max_messages; /* for slave only */
56 } channel_conf_t;
57
58 typedef struct group_conf {
59 struct group_conf *next;
60 char *name;
61 string_list_t *channels;
62 } group_conf_t;
63
64 /* For message->status */
65 #define M_RECENT (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
66 #define M_DEAD (1<<1) /* expunged */
67 #define M_FLAGS (1<<2) /* flags fetched */
68
69 typedef struct message {
70 struct message *next;
71 /* string_list_t *keywords; */
72 size_t size; /* zero implies "not fetched" */
73 int uid;
74 unsigned char flags, status;
75 } message_t;
76
77 typedef struct store {
78 store_conf_t *conf; /* foreign */
79
80 /* currently open mailbox */
81 const char *name; /* foreign! maybe preset? */
82 char *path; /* own */
83 message_t *msgs; /* own */
84 int uidvalidity;
85 unsigned char opts; /* maybe preset? */
86 /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
87 int count; /* # of messages */
88 int recent; /* # of recent messages - don't trust this beyond the initial read */
89 } store_t;
90
91 typedef struct {
92 char *data;
93 int len;
94 unsigned char flags;
95 unsigned char crlf:1;
96 } msg_data_t;
97
98 #define DRV_OK 0
99 #define DRV_MSG_BAD -1
100 #define DRV_BOX_BAD -2
101 #define DRV_STORE_BAD -3
102
103 static int Verbose, Quiet;
104
105 static void info( const char *, ... );
106 static void warn( const char *, ... );
107
108 static char *next_arg( char ** );
109
110 static void free_generic_messages( message_t * );
111
112 static int nfvasprintf( char **str, const char *fmt, va_list va );
113 static int nfsnprintf( char *buf, int blen, const char *fmt, ... );
114
115
116 static void arc4_init( void );
117 static unsigned char arc4_getbyte( void );
118
119 typedef struct imap_server_conf {
120 char *name;
121 char *tunnel;
122 char *host;
123 int port;
124 char *user;
125 char *pass;
126 } imap_server_conf_t;
127
128 typedef struct imap_store_conf {
129 store_conf_t gen;
130 imap_server_conf_t *server;
131 } imap_store_conf_t;
132
133 #define NIL (void*)0x1
134 #define LIST (void*)0x2
135
136 typedef struct _list {
137 struct _list *next, *child;
138 char *val;
139 int len;
140 } list_t;
141
142 typedef struct {
143 int fd;
144 } Socket_t;
145
146 typedef struct {
147 Socket_t sock;
148 int bytes;
149 int offset;
150 char buf[1024];
151 } buffer_t;
152
153 struct imap_cmd;
154
155 typedef struct imap {
156 int uidnext; /* from SELECT responses */
157 list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
158 unsigned caps, rcaps; /* CAPABILITY results */
159 /* command queue */
160 int nexttag, num_in_progress, literal_pending;
161 struct imap_cmd *in_progress, **in_progress_append;
162 buffer_t buf; /* this is BIG, so put it last */
163 } imap_t;
164
165 typedef struct imap_store {
166 store_t gen;
167 int uidvalidity;
168 imap_t *imap;
169 const char *prefix;
170 unsigned /*currentnc:1,*/ trashnc:1;
171 } imap_store_t;
172
173 struct imap_cmd_cb {
174 int (*cont)( imap_store_t *ctx, struct imap_cmd *cmd, const char *prompt );
175 void (*done)( imap_store_t *ctx, struct imap_cmd *cmd, int response);
176 void *ctx;
177 char *data;
178 int dlen;
179 int uid;
180 unsigned create:1, trycreate:1;
181 };
182
183 struct imap_cmd {
184 struct imap_cmd *next;
185 struct imap_cmd_cb cb;
186 char *cmd;
187 int tag;
188 };
189
190 #define CAP(cap) (imap->caps & (1 << (cap)))
191
192 enum CAPABILITY {
193 NOLOGIN = 0,
194 UIDPLUS,
195 LITERALPLUS,
196 NAMESPACE,
197 };
198
199 static const char *cap_list[] = {
200 "LOGINDISABLED",
201 "UIDPLUS",
202 "LITERAL+",
203 "NAMESPACE",
204 };
205
206 #define RESP_OK 0
207 #define RESP_NO 1
208 #define RESP_BAD 2
209
210 static int get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd );
211
212
213 static const char *Flags[] = {
214 "Draft",
215 "Flagged",
216 "Answered",
217 "Seen",
218 "Deleted",
219 };
220
221 static void
222 socket_perror( const char *func, Socket_t *sock, int ret )
223 {
224 if (ret < 0)
225 perror( func );
226 else
227 fprintf( stderr, "%s: unexpected EOF\n", func );
228 }
229
230 static int
231 socket_read( Socket_t *sock, char *buf, int len )
232 {
233 int n = read( sock->fd, buf, len );
234 if (n <= 0) {
235 socket_perror( "read", sock, n );
236 close( sock->fd );
237 sock->fd = -1;
238 }
239 return n;
240 }
241
242 static int
243 socket_write( Socket_t *sock, char *buf, int len )
244 {
245 int n = write( sock->fd, buf, len );
246 if (n != len) {
247 socket_perror( "write", sock, n );
248 close( sock->fd );
249 sock->fd = -1;
250 }
251 return n;
252 }
253
254 /* simple line buffering */
255 static int
256 buffer_gets( buffer_t * b, char **s )
257 {
258 int n;
259 int start = b->offset;
260
261 *s = b->buf + start;
262
263 for (;;) {
264 /* make sure we have enough data to read the \r\n sequence */
265 if (b->offset + 1 >= b->bytes) {
266 if (start) {
267 /* shift down used bytes */
268 *s = b->buf;
269
270 assert( start <= b->bytes );
271 n = b->bytes - start;
272
273 if (n)
274 memcpy( b->buf, b->buf + start, n );
275 b->offset -= start;
276 b->bytes = n;
277 start = 0;
278 }
279
280 n = socket_read( &b->sock, b->buf + b->bytes,
281 sizeof(b->buf) - b->bytes );
282
283 if (n <= 0)
284 return -1;
285
286 b->bytes += n;
287 }
288
289 if (b->buf[b->offset] == '\r') {
290 assert( b->offset + 1 < b->bytes );
291 if (b->buf[b->offset + 1] == '\n') {
292 b->buf[b->offset] = 0; /* terminate the string */
293 b->offset += 2; /* next line */
294 if (Verbose)
295 puts( *s );
296 return 0;
297 }
298 }
299
300 b->offset++;
301 }
302 /* not reached */
303 }
304
305 static void
306 info( const char *msg, ... )
307 {
308 va_list va;
309
310 if (!Quiet) {
311 va_start( va, msg );
312 vprintf( msg, va );
313 va_end( va );
314 fflush( stdout );
315 }
316 }
317
318 static void
319 warn( const char *msg, ... )
320 {
321 va_list va;
322
323 if (Quiet < 2) {
324 va_start( va, msg );
325 vfprintf( stderr, msg, va );
326 va_end( va );
327 }
328 }
329
330 static char *
331 next_arg( char **s )
332 {
333 char *ret;
334
335 if (!s || !*s)
336 return 0;
337 while (isspace( (unsigned char) **s ))
338 (*s)++;
339 if (!**s) {
340 *s = 0;
341 return 0;
342 }
343 if (**s == '"') {
344 ++*s;
345 ret = *s;
346 *s = strchr( *s, '"' );
347 } else {
348 ret = *s;
349 while (**s && !isspace( (unsigned char) **s ))
350 (*s)++;
351 }
352 if (*s) {
353 if (**s)
354 *(*s)++ = 0;
355 if (!**s)
356 *s = 0;
357 }
358 return ret;
359 }
360
361 static void
362 free_generic_messages( message_t *msgs )
363 {
364 message_t *tmsg;
365
366 for (; msgs; msgs = tmsg) {
367 tmsg = msgs->next;
368 free( msgs );
369 }
370 }
371
372 static int
373 vasprintf( char **strp, const char *fmt, va_list ap )
374 {
375 int len;
376 char tmp[1024];
377
378 if ((len = vsnprintf( tmp, sizeof(tmp), fmt, ap )) < 0 || !(*strp = xmalloc( len + 1 )))
379 return -1;
380 if (len >= (int)sizeof(tmp))
381 vsprintf( *strp, fmt, ap );
382 else
383 memcpy( *strp, tmp, len + 1 );
384 return len;
385 }
386
387 static int
388 nfsnprintf( char *buf, int blen, const char *fmt, ... )
389 {
390 int ret;
391 va_list va;
392
393 va_start( va, fmt );
394 if (blen <= 0 || (unsigned)(ret = vsnprintf( buf, blen, fmt, va )) >= (unsigned)blen)
395 die( "Fatal: buffer too small. Please report a bug.\n");
396 va_end( va );
397 return ret;
398 }
399
400 static int
401 nfvasprintf( char **str, const char *fmt, va_list va )
402 {
403 int ret = vasprintf( str, fmt, va );
404 if (ret < 0)
405 die( "Fatal: Out of memory\n");
406 return ret;
407 }
408
409 static struct {
410 unsigned char i, j, s[256];
411 } rs;
412
413 static void
414 arc4_init( void )
415 {
416 int i, fd;
417 unsigned char j, si, dat[128];
418
419 if ((fd = open( "/dev/urandom", O_RDONLY )) < 0 && (fd = open( "/dev/random", O_RDONLY )) < 0) {
420 fprintf( stderr, "Fatal: no random number source available.\n" );
421 exit( 3 );
422 }
423 if (read( fd, dat, 128 ) != 128) {
424 fprintf( stderr, "Fatal: cannot read random number source.\n" );
425 exit( 3 );
426 }
427 close( fd );
428
429 for (i = 0; i < 256; i++)
430 rs.s[i] = i;
431 for (i = j = 0; i < 256; i++) {
432 si = rs.s[i];
433 j += si + dat[i & 127];
434 rs.s[i] = rs.s[j];
435 rs.s[j] = si;
436 }
437 rs.i = rs.j = 0;
438
439 for (i = 0; i < 256; i++)
440 arc4_getbyte();
441 }
442
443 static unsigned char
444 arc4_getbyte( void )
445 {
446 unsigned char si, sj;
447
448 rs.i++;
449 si = rs.s[rs.i];
450 rs.j += si;
451 sj = rs.s[rs.j];
452 rs.s[rs.i] = sj;
453 rs.s[rs.j] = si;
454 return rs.s[(si + sj) & 0xff];
455 }
456
457 static struct imap_cmd *
458 v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
459 const char *fmt, va_list ap )
460 {
461 imap_t *imap = ctx->imap;
462 struct imap_cmd *cmd;
463 int n, bufl;
464 char buf[1024];
465
466 cmd = xmalloc( sizeof(struct imap_cmd) );
467 nfvasprintf( &cmd->cmd, fmt, ap );
468 cmd->tag = ++imap->nexttag;
469
470 if (cb)
471 cmd->cb = *cb;
472 else
473 memset( &cmd->cb, 0, sizeof(cmd->cb) );
474
475 while (imap->literal_pending)
476 get_cmd_result( ctx, 0 );
477
478 bufl = nfsnprintf( buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
479 "%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
480 cmd->tag, cmd->cmd, cmd->cb.dlen );
481 if (Verbose) {
482 if (imap->num_in_progress)
483 printf( "(%d in progress) ", imap->num_in_progress );
484 if (memcmp( cmd->cmd, "LOGIN", 5 ))
485 printf( ">>> %s", buf );
486 else
487 printf( ">>> %d LOGIN <user> <pass>\n", cmd->tag );
488 }
489 if (socket_write( &imap->buf.sock, buf, bufl ) != bufl) {
490 free( cmd->cmd );
491 free( cmd );
492 if (cb && cb->data)
493 free( cb->data );
494 return NULL;
495 }
496 if (cmd->cb.data) {
497 if (CAP(LITERALPLUS)) {
498 n = socket_write( &imap->buf.sock, cmd->cb.data, cmd->cb.dlen );
499 free( cmd->cb.data );
500 if (n != cmd->cb.dlen ||
501 (n = socket_write( &imap->buf.sock, "\r\n", 2 )) != 2)
502 {
503 free( cmd->cmd );
504 free( cmd );
505 return NULL;
506 }
507 cmd->cb.data = 0;
508 } else
509 imap->literal_pending = 1;
510 } else if (cmd->cb.cont)
511 imap->literal_pending = 1;
512 cmd->next = 0;
513 *imap->in_progress_append = cmd;
514 imap->in_progress_append = &cmd->next;
515 imap->num_in_progress++;
516 return cmd;
517 }
518
519 static struct imap_cmd *
520 issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
521 {
522 struct imap_cmd *ret;
523 va_list ap;
524
525 va_start( ap, fmt );
526 ret = v_issue_imap_cmd( ctx, cb, fmt, ap );
527 va_end( ap );
528 return ret;
529 }
530
531 static int
532 imap_exec( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
533 {
534 va_list ap;
535 struct imap_cmd *cmdp;
536
537 va_start( ap, fmt );
538 cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
539 va_end( ap );
540 if (!cmdp)
541 return RESP_BAD;
542
543 return get_cmd_result( ctx, cmdp );
544 }
545
546 static int
547 imap_exec_m( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
548 {
549 va_list ap;
550 struct imap_cmd *cmdp;
551
552 va_start( ap, fmt );
553 cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
554 va_end( ap );
555 if (!cmdp)
556 return DRV_STORE_BAD;
557
558 switch (get_cmd_result( ctx, cmdp )) {
559 case RESP_BAD: return DRV_STORE_BAD;
560 case RESP_NO: return DRV_MSG_BAD;
561 default: return DRV_OK;
562 }
563 }
564
565 static int
566 is_atom( list_t *list )
567 {
568 return list && list->val && list->val != NIL && list->val != LIST;
569 }
570
571 static int
572 is_list( list_t *list )
573 {
574 return list && list->val == LIST;
575 }
576
577 static void
578 free_list( list_t *list )
579 {
580 list_t *tmp;
581
582 for (; list; list = tmp) {
583 tmp = list->next;
584 if (is_list( list ))
585 free_list( list->child );
586 else if (is_atom( list ))
587 free( list->val );
588 free( list );
589 }
590 }
591
592 static int
593 parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
594 {
595 list_t *cur;
596 char *s = *sp, *p;
597 int n, bytes;
598
599 for (;;) {
600 while (isspace( (unsigned char)*s ))
601 s++;
602 if (level && *s == ')') {
603 s++;
604 break;
605 }
606 *curp = cur = xmalloc( sizeof(*cur) );
607 curp = &cur->next;
608 cur->val = 0; /* for clean bail */
609 if (*s == '(') {
610 /* sublist */
611 s++;
612 cur->val = LIST;
613 if (parse_imap_list_l( imap, &s, &cur->child, level + 1 ))
614 goto bail;
615 } else if (imap && *s == '{') {
616 /* literal */
617 bytes = cur->len = strtol( s + 1, &s, 10 );
618 if (*s != '}')
619 goto bail;
620
621 s = cur->val = xmalloc( cur->len );
622
623 /* dump whats left over in the input buffer */
624 n = imap->buf.bytes - imap->buf.offset;
625
626 if (n > bytes)
627 /* the entire message fit in the buffer */
628 n = bytes;
629
630 memcpy( s, imap->buf.buf + imap->buf.offset, n );
631 s += n;
632 bytes -= n;
633
634 /* mark that we used part of the buffer */
635 imap->buf.offset += n;
636
637 /* now read the rest of the message */
638 while (bytes > 0) {
639 if ((n = socket_read (&imap->buf.sock, s, bytes)) <= 0)
640 goto bail;
641 s += n;
642 bytes -= n;
643 }
644
645 if (buffer_gets( &imap->buf, &s ))
646 goto bail;
647 } else if (*s == '"') {
648 /* quoted string */
649 s++;
650 p = s;
651 for (; *s != '"'; s++)
652 if (!*s)
653 goto bail;
654 cur->len = s - p;
655 s++;
656 cur->val = xmalloc( cur->len + 1 );
657 memcpy( cur->val, p, cur->len );
658 cur->val[cur->len] = 0;
659 } else {
660 /* atom */
661 p = s;
662 for (; *s && !isspace( (unsigned char)*s ); s++)
663 if (level && *s == ')')
664 break;
665 cur->len = s - p;
666 if (cur->len == 3 && !memcmp ("NIL", p, 3))
667 cur->val = NIL;
668 else {
669 cur->val = xmalloc( cur->len + 1 );
670 memcpy( cur->val, p, cur->len );
671 cur->val[cur->len] = 0;
672 }
673 }
674
675 if (!level)
676 break;
677 if (!*s)
678 goto bail;
679 }
680 *sp = s;
681 *curp = 0;
682 return 0;
683
684 bail:
685 *curp = 0;
686 return -1;
687 }
688
689 static list_t *
690 parse_imap_list( imap_t *imap, char **sp )
691 {
692 list_t *head;
693
694 if (!parse_imap_list_l( imap, sp, &head, 0 ))
695 return head;
696 free_list( head );
697 return NULL;
698 }
699
700 static list_t *
701 parse_list( char **sp )
702 {
703 return parse_imap_list( 0, sp );
704 }
705
706 static void
707 parse_capability( imap_t *imap, char *cmd )
708 {
709 char *arg;
710 unsigned i;
711
712 imap->caps = 0x80000000;
713 while ((arg = next_arg( &cmd )))
714 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
715 if (!strcmp( cap_list[i], arg ))
716 imap->caps |= 1 << i;
717 imap->rcaps = imap->caps;
718 }
719
720 static int
721 parse_response_code( imap_store_t *ctx, struct imap_cmd_cb *cb, char *s )
722 {
723 imap_t *imap = ctx->imap;
724 char *arg, *p;
725
726 if (*s != '[')
727 return RESP_OK; /* no response code */
728 s++;
729 if (!(p = strchr( s, ']' ))) {
730 fprintf( stderr, "IMAP error: malformed response code\n" );
731 return RESP_BAD;
732 }
733 *p++ = 0;
734 arg = next_arg( &s );
735 if (!strcmp( "UIDVALIDITY", arg )) {
736 if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg ))) {
737 fprintf( stderr, "IMAP error: malformed UIDVALIDITY status\n" );
738 return RESP_BAD;
739 }
740 } else if (!strcmp( "UIDNEXT", arg )) {
741 if (!(arg = next_arg( &s )) || !(imap->uidnext = atoi( arg ))) {
742 fprintf( stderr, "IMAP error: malformed NEXTUID status\n" );
743 return RESP_BAD;
744 }
745 } else if (!strcmp( "CAPABILITY", arg )) {
746 parse_capability( imap, s );
747 } else if (!strcmp( "ALERT", arg )) {
748 /* RFC2060 says that these messages MUST be displayed
749 * to the user
750 */
751 for (; isspace( (unsigned char)*p ); p++);
752 fprintf( stderr, "*** IMAP ALERT *** %s\n", p );
753 } else if (cb && cb->ctx && !strcmp( "APPENDUID", arg )) {
754 if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg )) ||
755 !(arg = next_arg( &s )) || !(*(int *)cb->ctx = atoi( arg )))
756 {
757 fprintf( stderr, "IMAP error: malformed APPENDUID status\n" );
758 return RESP_BAD;
759 }
760 }
761 return RESP_OK;
762 }
763
764 static int
765 get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
766 {
767 imap_t *imap = ctx->imap;
768 struct imap_cmd *cmdp, **pcmdp, *ncmdp;
769 char *cmd, *arg, *arg1, *p;
770 int n, resp, resp2, tag;
771
772 for (;;) {
773 if (buffer_gets( &imap->buf, &cmd ))
774 return RESP_BAD;
775
776 arg = next_arg( &cmd );
777 if (*arg == '*') {
778 arg = next_arg( &cmd );
779 if (!arg) {
780 fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
781 return RESP_BAD;
782 }
783
784 if (!strcmp( "NAMESPACE", arg )) {
785 imap->ns_personal = parse_list( &cmd );
786 imap->ns_other = parse_list( &cmd );
787 imap->ns_shared = parse_list( &cmd );
788 } else if (!strcmp( "OK", arg ) || !strcmp( "BAD", arg ) ||
789 !strcmp( "NO", arg ) || !strcmp( "BYE", arg )) {
790 if ((resp = parse_response_code( ctx, 0, cmd )) != RESP_OK)
791 return resp;
792 } else if (!strcmp( "CAPABILITY", arg ))
793 parse_capability( imap, cmd );
794 else if ((arg1 = next_arg( &cmd ))) {
795 if (!strcmp( "EXISTS", arg1 ))
796 ctx->gen.count = atoi( arg );
797 else if (!strcmp( "RECENT", arg1 ))
798 ctx->gen.recent = atoi( arg );
799 } else {
800 fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
801 return RESP_BAD;
802 }
803 } else if (!imap->in_progress) {
804 fprintf( stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "" );
805 return RESP_BAD;
806 } else if (*arg == '+') {
807 /* This can happen only with the last command underway, as
808 it enforces a round-trip. */
809 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
810 offsetof(struct imap_cmd, next));
811 if (cmdp->cb.data) {
812 n = socket_write( &imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen );
813 free( cmdp->cb.data );
814 cmdp->cb.data = 0;
815 if (n != (int)cmdp->cb.dlen)
816 return RESP_BAD;
817 } else if (cmdp->cb.cont) {
818 if (cmdp->cb.cont( ctx, cmdp, cmd ))
819 return RESP_BAD;
820 } else {
821 fprintf( stderr, "IMAP error: unexpected command continuation request\n" );
822 return RESP_BAD;
823 }
824 if (socket_write( &imap->buf.sock, "\r\n", 2 ) != 2)
825 return RESP_BAD;
826 if (!cmdp->cb.cont)
827 imap->literal_pending = 0;
828 if (!tcmd)
829 return DRV_OK;
830 } else {
831 tag = atoi( arg );
832 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
833 if (cmdp->tag == tag)
834 goto gottag;
835 fprintf( stderr, "IMAP error: unexpected tag %s\n", arg );
836 return RESP_BAD;
837 gottag:
838 if (!(*pcmdp = cmdp->next))
839 imap->in_progress_append = pcmdp;
840 imap->num_in_progress--;
841 if (cmdp->cb.cont || cmdp->cb.data)
842 imap->literal_pending = 0;
843 arg = next_arg( &cmd );
844 if (!strcmp( "OK", arg ))
845 resp = DRV_OK;
846 else {
847 if (!strcmp( "NO", arg )) {
848 if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp( cmd, "[TRYCREATE]", 11 ))) { /* SELECT, APPEND or UID COPY */
849 p = strchr( cmdp->cmd, '"' );
850 if (!issue_imap_cmd( ctx, 0, "CREATE \"%.*s\"", strchr( p + 1, '"' ) - p + 1, p )) {
851 resp = RESP_BAD;
852 goto normal;
853 }
854 /* not waiting here violates the spec, but a server that does not
855 grok this nonetheless violates it too. */
856 cmdp->cb.create = 0;
857 if (!(ncmdp = issue_imap_cmd( ctx, &cmdp->cb, "%s", cmdp->cmd ))) {
858 resp = RESP_BAD;
859 goto normal;
860 }
861 free( cmdp->cmd );
862 free( cmdp );
863 if (!tcmd)
864 return 0; /* ignored */
865 if (cmdp == tcmd)
866 tcmd = ncmdp;
867 continue;
868 }
869 resp = RESP_NO;
870 } else /*if (!strcmp( "BAD", arg ))*/
871 resp = RESP_BAD;
872 fprintf( stderr, "IMAP command '%s' returned response (%s) - %s\n",
873 memcmp (cmdp->cmd, "LOGIN", 5) ?
874 cmdp->cmd : "LOGIN <user> <pass>",
875 arg, cmd ? cmd : "");
876 }
877 if ((resp2 = parse_response_code( ctx, &cmdp->cb, cmd )) > resp)
878 resp = resp2;
879 normal:
880 if (cmdp->cb.done)
881 cmdp->cb.done( ctx, cmdp, resp );
882 if (cmdp->cb.data)
883 free( cmdp->cb.data );
884 free( cmdp->cmd );
885 free( cmdp );
886 if (!tcmd || tcmd == cmdp)
887 return resp;
888 }
889 }
890 /* not reached */
891 }
892
893 static void
894 imap_close_server( imap_store_t *ictx )
895 {
896 imap_t *imap = ictx->imap;
897
898 if (imap->buf.sock.fd != -1) {
899 imap_exec( ictx, 0, "LOGOUT" );
900 close( imap->buf.sock.fd );
901 }
902 free_list( imap->ns_personal );
903 free_list( imap->ns_other );
904 free_list( imap->ns_shared );
905 free( imap );
906 }
907
908 static void
909 imap_close_store( store_t *ctx )
910 {
911 imap_close_server( (imap_store_t *)ctx );
912 free_generic_messages( ctx->msgs );
913 free( ctx );
914 }
915
916 static store_t *
917 imap_open_store( imap_server_conf_t *srvc )
918 {
919 imap_store_t *ctx;
920 imap_t *imap;
921 char *arg, *rsp;
922 struct hostent *he;
923 struct sockaddr_in addr;
924 int s, a[2], preauth;
925
926 ctx = xcalloc( sizeof(*ctx), 1 );
927
928 ctx->imap = imap = xcalloc( sizeof(*imap), 1 );
929 imap->buf.sock.fd = -1;
930 imap->in_progress_append = &imap->in_progress;
931
932 /* open connection to IMAP server */
933
934 if (srvc->tunnel) {
935 info( "Starting tunnel '%s'... ", srvc->tunnel );
936
937 if (socketpair( PF_UNIX, SOCK_STREAM, 0, a )) {
938 perror( "socketpair" );
939 exit( 1 );
940 }
941
942 if (fork() == 0) {
943 if (dup2( a[0], 0 ) == -1 || dup2( a[0], 1 ) == -1)
944 _exit( 127 );
945 close( a[0] );
946 close( a[1] );
947 execl( "/bin/sh", "sh", "-c", srvc->tunnel, 0 );
948 _exit( 127 );
949 }
950
951 close (a[0]);
952
953 imap->buf.sock.fd = a[1];
954
955 info( "ok\n" );
956 } else {
957 memset( &addr, 0, sizeof(addr) );
958 addr.sin_port = htons( srvc->port );
959 addr.sin_family = AF_INET;
960
961 info( "Resolving %s... ", srvc->host );
962 he = gethostbyname( srvc->host );
963 if (!he) {
964 perror( "gethostbyname" );
965 goto bail;
966 }
967 info( "ok\n" );
968
969 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
970
971 s = socket( PF_INET, SOCK_STREAM, 0 );
972
973 info( "Connecting to %s:%hu... ", inet_ntoa( addr.sin_addr ), ntohs( addr.sin_port ) );
974 if (connect( s, (struct sockaddr *)&addr, sizeof(addr) )) {
975 close( s );
976 perror( "connect" );
977 goto bail;
978 }
979 info( "ok\n" );
980
981 imap->buf.sock.fd = s;
982
983 }
984
985 /* read the greeting string */
986 if (buffer_gets( &imap->buf, &rsp )) {
987 fprintf( stderr, "IMAP error: no greeting response\n" );
988 goto bail;
989 }
990 arg = next_arg( &rsp );
991 if (!arg || *arg != '*' || (arg = next_arg( &rsp )) == NULL) {
992 fprintf( stderr, "IMAP error: invalid greeting response\n" );
993 goto bail;
994 }
995 preauth = 0;
996 if (!strcmp( "PREAUTH", arg ))
997 preauth = 1;
998 else if (strcmp( "OK", arg ) != 0) {
999 fprintf( stderr, "IMAP error: unknown greeting response\n" );
1000 goto bail;
1001 }
1002 parse_response_code( ctx, 0, rsp );
1003 if (!imap->caps && imap_exec( ctx, 0, "CAPABILITY" ) != RESP_OK)
1004 goto bail;
1005
1006 if (!preauth) {
1007
1008 info ("Logging in...\n");
1009 if (!srvc->user) {
1010 fprintf( stderr, "Skipping server %s, no user\n", srvc->host );
1011 goto bail;
1012 }
1013 if (!srvc->pass) {
1014 char prompt[80];
1015 sprintf( prompt, "Password (%s@%s): ", srvc->user, srvc->host );
1016 arg = getpass( prompt );
1017 if (!arg) {
1018 perror( "getpass" );
1019 exit( 1 );
1020 }
1021 if (!*arg) {
1022 fprintf( stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host );
1023 goto bail;
1024 }
1025 /*
1026 * getpass() returns a pointer to a static buffer. make a copy
1027 * for long term storage.
1028 */
1029 srvc->pass = strdup( arg );
1030 }
1031 if (CAP(NOLOGIN)) {
1032 fprintf( stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host );
1033 goto bail;
1034 }
1035 warn( "*** IMAP Warning *** Password is being sent in the clear\n" );
1036 if (imap_exec( ctx, 0, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass ) != RESP_OK) {
1037 fprintf( stderr, "IMAP error: LOGIN failed\n" );
1038 goto bail;
1039 }
1040 } /* !preauth */
1041
1042 ctx->prefix = "";
1043 ctx->trashnc = 1;
1044 return (store_t *)ctx;
1045
1046 bail:
1047 imap_close_store( &ctx->gen );
1048 return 0;
1049 }
1050
1051 static int
1052 imap_make_flags( int flags, char *buf )
1053 {
1054 const char *s;
1055 unsigned i, d;
1056
1057 for (i = d = 0; i < ARRAY_SIZE(Flags); i++)
1058 if (flags & (1 << i)) {
1059 buf[d++] = ' ';
1060 buf[d++] = '\\';
1061 for (s = Flags[i]; *s; s++)
1062 buf[d++] = *s;
1063 }
1064 buf[0] = '(';
1065 buf[d++] = ')';
1066 return d;
1067 }
1068
1069 #define TUIDL 8
1070
1071 static int
1072 imap_store_msg( store_t *gctx, msg_data_t *data, int *uid )
1073 {
1074 imap_store_t *ctx = (imap_store_t *)gctx;
1075 imap_t *imap = ctx->imap;
1076 struct imap_cmd_cb cb;
1077 char *fmap, *buf;
1078 const char *prefix, *box;
1079 int ret, i, j, d, len, extra, nocr;
1080 int start, sbreak = 0, ebreak = 0;
1081 char flagstr[128], tuid[TUIDL * 2 + 1];
1082
1083 memset( &cb, 0, sizeof(cb) );
1084
1085 fmap = data->data;
1086 len = data->len;
1087 nocr = !data->crlf;
1088 extra = 0, i = 0;
1089 if (!CAP(UIDPLUS) && uid) {
1090 nloop:
1091 start = i;
1092 while (i < len)
1093 if (fmap[i++] == '\n') {
1094 extra += nocr;
1095 if (i - 2 + nocr == start) {
1096 sbreak = ebreak = i - 2 + nocr;
1097 goto mktid;
1098 }
1099 if (!memcmp( fmap + start, "X-TUID: ", 8 )) {
1100 extra -= (ebreak = i) - (sbreak = start) + nocr;
1101 goto mktid;
1102 }
1103 goto nloop;
1104 }
1105 /* invalid message */
1106 free( fmap );
1107 return DRV_MSG_BAD;
1108 mktid:
1109 for (j = 0; j < TUIDL; j++)
1110 sprintf( tuid + j * 2, "%02x", arc4_getbyte() );
1111 extra += 8 + TUIDL * 2 + 2;
1112 }
1113 if (nocr)
1114 for (; i < len; i++)
1115 if (fmap[i] == '\n')
1116 extra++;
1117
1118 cb.dlen = len + extra;
1119 buf = cb.data = xmalloc( cb.dlen );
1120 i = 0;
1121 if (!CAP(UIDPLUS) && uid) {
1122 if (nocr) {
1123 for (; i < sbreak; i++)
1124 if (fmap[i] == '\n') {
1125 *buf++ = '\r';
1126 *buf++ = '\n';
1127 } else
1128 *buf++ = fmap[i];
1129 } else {
1130 memcpy( buf, fmap, sbreak );
1131 buf += sbreak;
1132 }
1133 memcpy( buf, "X-TUID: ", 8 );
1134 buf += 8;
1135 memcpy( buf, tuid, TUIDL * 2 );
1136 buf += TUIDL * 2;
1137 *buf++ = '\r';
1138 *buf++ = '\n';
1139 i = ebreak;
1140 }
1141 if (nocr) {
1142 for (; i < len; i++)
1143 if (fmap[i] == '\n') {
1144 *buf++ = '\r';
1145 *buf++ = '\n';
1146 } else
1147 *buf++ = fmap[i];
1148 } else
1149 memcpy( buf, fmap + i, len - i );
1150
1151 free( fmap );
1152
1153 d = 0;
1154 if (data->flags) {
1155 d = imap_make_flags( data->flags, flagstr );
1156 flagstr[d++] = ' ';
1157 }
1158 flagstr[d] = 0;
1159
1160 if (!uid) {
1161 box = gctx->conf->trash;
1162 prefix = ctx->prefix;
1163 cb.create = 1;
1164 if (ctx->trashnc)
1165 imap->caps = imap->rcaps & ~(1 << LITERALPLUS);
1166 } else {
1167 box = gctx->name;
1168 prefix = !strcmp( box, "INBOX" ) ? "" : ctx->prefix;
1169 cb.create = 0;
1170 }
1171 cb.ctx = uid;
1172 ret = imap_exec_m( ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr );
1173 imap->caps = imap->rcaps;
1174 if (ret != DRV_OK)
1175 return ret;
1176 if (!uid)
1177 ctx->trashnc = 0;
1178 else
1179 gctx->count++;
1180
1181 return DRV_OK;
1182 }
1183
1184 #define CHUNKSIZE 0x1000
1185
1186 static int
1187 read_message( FILE *f, msg_data_t *msg )
1188 {
1189 int len, r;
1190
1191 memset( msg, 0, sizeof *msg );
1192 len = CHUNKSIZE;
1193 msg->data = xmalloc( len+1 );
1194 msg->data[0] = 0;
1195
1196 while(!feof( f )) {
1197 if (msg->len >= len) {
1198 void *p;
1199 len += CHUNKSIZE;
1200 p = xrealloc(msg->data, len+1);
1201 if (!p)
1202 break;
1203 }
1204 r = fread( &msg->data[msg->len], 1, len - msg->len, f );
1205 if (r <= 0)
1206 break;
1207 msg->len += r;
1208 }
1209 msg->data[msg->len] = 0;
1210 return msg->len;
1211 }
1212
1213 static int
1214 count_messages( msg_data_t *msg )
1215 {
1216 int count = 0;
1217 char *p = msg->data;
1218
1219 while (1) {
1220 if (!strncmp( "From ", p, 5 )) {
1221 count++;
1222 p += 5;
1223 }
1224 p = strstr( p+5, "\nFrom ");
1225 if (!p)
1226 break;
1227 p++;
1228 }
1229 return count;
1230 }
1231
1232 static int
1233 split_msg( msg_data_t *all_msgs, msg_data_t *msg, int *ofs )
1234 {
1235 char *p, *data;
1236
1237 memset( msg, 0, sizeof *msg );
1238 if (*ofs >= all_msgs->len)
1239 return 0;
1240
1241 data = &all_msgs->data[ *ofs ];
1242 msg->len = all_msgs->len - *ofs;
1243
1244 if (msg->len < 5 || strncmp( data, "From ", 5 ))
1245 return 0;
1246
1247 p = strstr( data, "\nFrom " );
1248 if (p)
1249 msg->len = &p[1] - data;
1250
1251 msg->data = xmalloc( msg->len + 1 );
1252 if (!msg->data)
1253 return 0;
1254
1255 memcpy( msg->data, data, msg->len );
1256 msg->data[ msg->len ] = 0;
1257
1258 *ofs += msg->len;
1259 return 1;
1260 }
1261
1262 static imap_server_conf_t server =
1263 {
1264 NULL, /* name */
1265 NULL, /* tunnel */
1266 NULL, /* host */
1267 0, /* port */
1268 NULL, /* user */
1269 NULL, /* pass */
1270 };
1271
1272 static char *imap_folder;
1273
1274 static int
1275 git_imap_config(const char *key, const char *val)
1276 {
1277 char imap_key[] = "imap.";
1278
1279 if (strncmp( key, imap_key, sizeof imap_key - 1 ))
1280 return 0;
1281 key += sizeof imap_key - 1;
1282
1283 if (!strcmp( "folder", key )) {
1284 imap_folder = strdup( val );
1285 } else if (!strcmp( "host", key )) {
1286 {
1287 if (!strncmp( "imap:", val, 5 ))
1288 val += 5;
1289 if (!server.port)
1290 server.port = 143;
1291 }
1292 if (!strncmp( "//", val, 2 ))
1293 val += 2;
1294 server.host = strdup( val );
1295 }
1296 else if (!strcmp( "user", key ))
1297 server.user = strdup( val );
1298 else if (!strcmp( "pass", key ))
1299 server.pass = strdup( val );
1300 else if (!strcmp( "port", key ))
1301 server.port = git_config_int( key, val );
1302 else if (!strcmp( "tunnel", key ))
1303 server.tunnel = strdup( val );
1304 return 0;
1305 }
1306
1307 int
1308 main(int argc, char **argv)
1309 {
1310 msg_data_t all_msgs, msg;
1311 store_t *ctx = 0;
1312 int uid = 0;
1313 int ofs = 0;
1314 int r;
1315 int total, n = 0;
1316
1317 /* init the random number generator */
1318 arc4_init();
1319
1320 git_config( git_imap_config );
1321
1322 if (!imap_folder) {
1323 fprintf( stderr, "no imap store specified\n" );
1324 return 1;
1325 }
1326
1327 /* read the messages */
1328 if (!read_message( stdin, &all_msgs )) {
1329 fprintf(stderr,"nothing to send\n");
1330 return 1;
1331 }
1332
1333 /* write it to the imap server */
1334 ctx = imap_open_store( &server );
1335 if (!ctx) {
1336 fprintf( stderr,"failed to open store\n");
1337 return 1;
1338 }
1339
1340 total = count_messages( &all_msgs );
1341 fprintf( stderr, "sending %d message%s\n", total, (total!=1)?"s":"" );
1342 ctx->name = imap_folder;
1343 while (1) {
1344 unsigned percent = n * 100 / total;
1345 fprintf( stderr, "%4u%% (%d/%d) done\r", percent, n, total );
1346 if (!split_msg( &all_msgs, &msg, &ofs ))
1347 break;
1348 r = imap_store_msg( ctx, &msg, &uid );
1349 if (r != DRV_OK) break;
1350 n++;
1351 }
1352 fprintf( stderr,"\n" );
1353
1354 imap_close_store( ctx );
1355
1356 return 0;
1357 }
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