imap-send: move #ifdef around
[git/git.git] / imap-send.c
CommitLineData
f2561fda
MM
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"
2fb3f6db 26#include "exec_cmd.h"
c94d2dd0 27#include "run-command.h"
684ec6c6
RS
28#ifdef NO_OPENSSL
29typedef void *SSL;
ae9c606e
HM
30#else
31#include <openssl/evp.h>
32#include <openssl/hmac.h>
684ec6c6 33#endif
f2561fda 34
9f1ad541 35struct store_conf {
f2561fda
MM
36 char *name;
37 const char *path; /* should this be here? its interpretation is driver-specific */
38 char *map_inbox;
39 char *trash;
40 unsigned max_size; /* off_t is overkill */
41 unsigned trash_remote_new:1, trash_only_new:1;
9f1ad541 42};
f2561fda 43
f2561fda
MM
44/* For message->status */
45#define M_RECENT (1<<0) /* unsyncable flag; maildir_* depend on this being 1<<0 */
46#define M_DEAD (1<<1) /* expunged */
47#define M_FLAGS (1<<2) /* flags fetched */
48
9f1ad541 49struct message {
f2561fda 50 struct message *next;
f2561fda
MM
51 size_t size; /* zero implies "not fetched" */
52 int uid;
53 unsigned char flags, status;
9f1ad541 54};
f2561fda 55
9f1ad541
JH
56struct store {
57 struct store_conf *conf; /* foreign */
f2561fda
MM
58
59 /* currently open mailbox */
60 const char *name; /* foreign! maybe preset? */
61 char *path; /* own */
9f1ad541 62 struct message *msgs; /* own */
f2561fda
MM
63 int uidvalidity;
64 unsigned char opts; /* maybe preset? */
65 /* note that the following do _not_ reflect stats from msgs, but mailbox totals */
66 int count; /* # of messages */
67 int recent; /* # of recent messages - don't trust this beyond the initial read */
9f1ad541 68};
f2561fda 69
9f1ad541 70struct msg_data {
f2561fda
MM
71 char *data;
72 int len;
73 unsigned char flags;
9f1ad541 74};
f2561fda 75
9a2861e3
JN
76static const char imap_send_usage[] = "git imap-send < <mbox>";
77
d23b1ecf 78#undef DRV_OK
f2561fda
MM
79#define DRV_OK 0
80#define DRV_MSG_BAD -1
81#define DRV_BOX_BAD -2
82#define DRV_STORE_BAD -3
83
84static int Verbose, Quiet;
85
28bea9e5 86__attribute__((format (printf, 1, 2)))
95c53908 87static void imap_info(const char *, ...);
28bea9e5 88__attribute__((format (printf, 1, 2)))
95c53908 89static void imap_warn(const char *, ...);
f2561fda 90
95c53908 91static char *next_arg(char **);
f2561fda 92
9f1ad541 93static void free_generic_messages(struct message *);
f2561fda 94
28bea9e5 95__attribute__((format (printf, 3, 4)))
95c53908 96static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
f2561fda 97
19247e55
PH
98static int nfvasprintf(char **strp, const char *fmt, va_list ap)
99{
100 int len;
101 char tmp[8192];
102
103 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
104 if (len < 0)
d7530708 105 die("Fatal: Out of memory");
19247e55 106 if (len >= sizeof(tmp))
d7530708 107 die("imap command overflow!");
19247e55
PH
108 *strp = xmemdupz(tmp, len);
109 return len;
110}
f2561fda 111
9f1ad541 112struct imap_server_conf {
f2561fda
MM
113 char *name;
114 char *tunnel;
115 char *host;
116 int port;
117 char *user;
118 char *pass;
684ec6c6
RS
119 int use_ssl;
120 int ssl_verify;
c64d84f1 121 int use_html;
ae9c606e
HM
122 char *auth_method;
123};
124
125static struct imap_server_conf server = {
126 NULL, /* name */
127 NULL, /* tunnel */
128 NULL, /* host */
129 0, /* port */
130 NULL, /* user */
131 NULL, /* pass */
132 0, /* use_ssl */
133 1, /* ssl_verify */
134 0, /* use_html */
135 NULL, /* auth_method */
9f1ad541 136};
f2561fda 137
9f1ad541
JH
138struct imap_store_conf {
139 struct store_conf gen;
140 struct imap_server_conf *server;
f2561fda 141 unsigned use_namespace:1;
9f1ad541 142};
f2561fda 143
9f1ad541
JH
144#define NIL (void *)0x1
145#define LIST (void *)0x2
f2561fda 146
9f1ad541
JH
147struct imap_list {
148 struct imap_list *next, *child;
f2561fda
MM
149 char *val;
150 int len;
9f1ad541 151};
f2561fda 152
9f1ad541 153struct imap_socket {
7a7796e9 154 int fd[2];
684ec6c6 155 SSL *ssl;
9f1ad541 156};
f2561fda 157
9f1ad541
JH
158struct imap_buffer {
159 struct imap_socket sock;
f2561fda
MM
160 int bytes;
161 int offset;
162 char buf[1024];
9f1ad541 163};
f2561fda
MM
164
165struct imap_cmd;
166
9f1ad541 167struct imap {
f2561fda 168 int uidnext; /* from SELECT responses */
9f1ad541 169 struct imap_list *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
f2561fda
MM
170 unsigned caps, rcaps; /* CAPABILITY results */
171 /* command queue */
172 int nexttag, num_in_progress, literal_pending;
173 struct imap_cmd *in_progress, **in_progress_append;
9f1ad541
JH
174 struct imap_buffer buf; /* this is BIG, so put it last */
175};
f2561fda 176
9f1ad541
JH
177struct imap_store {
178 struct store gen;
f2561fda 179 int uidvalidity;
9f1ad541 180 struct imap *imap;
f2561fda
MM
181 const char *prefix;
182 unsigned /*currentnc:1,*/ trashnc:1;
9f1ad541 183};
f2561fda
MM
184
185struct imap_cmd_cb {
9f1ad541
JH
186 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
187 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
f2561fda
MM
188 void *ctx;
189 char *data;
190 int dlen;
191 int uid;
192 unsigned create:1, trycreate:1;
193};
194
195struct imap_cmd {
196 struct imap_cmd *next;
197 struct imap_cmd_cb cb;
198 char *cmd;
199 int tag;
200};
201
202#define CAP(cap) (imap->caps & (1 << (cap)))
203
204enum CAPABILITY {
205 NOLOGIN = 0,
206 UIDPLUS,
207 LITERALPLUS,
208 NAMESPACE,
684ec6c6 209 STARTTLS,
4b05548f 210 AUTH_CRAM_MD5
f2561fda
MM
211};
212
213static const char *cap_list[] = {
214 "LOGINDISABLED",
215 "UIDPLUS",
216 "LITERAL+",
217 "NAMESPACE",
684ec6c6 218 "STARTTLS",
ae9c606e 219 "AUTH=CRAM-MD5",
f2561fda
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220};
221
222#define RESP_OK 0
223#define RESP_NO 1
224#define RESP_BAD 2
225
9f1ad541 226static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
f2561fda
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227
228
229static const char *Flags[] = {
230 "Draft",
231 "Flagged",
232 "Answered",
233 "Seen",
234 "Deleted",
235};
236
684ec6c6
RS
237#ifndef NO_OPENSSL
238static void ssl_socket_perror(const char *func)
239{
2af202be 240 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
684ec6c6
RS
241}
242#endif
243
9f1ad541 244static void socket_perror(const char *func, struct imap_socket *sock, int ret)
f2561fda 245{
684ec6c6
RS
246#ifndef NO_OPENSSL
247 if (sock->ssl) {
248 int sslerr = SSL_get_error(sock->ssl, ret);
249 switch (sslerr) {
250 case SSL_ERROR_NONE:
251 break;
252 case SSL_ERROR_SYSCALL:
253 perror("SSL_connect");
254 break;
255 default:
256 ssl_socket_perror("SSL_connect");
257 break;
258 }
259 } else
260#endif
261 {
262 if (ret < 0)
263 perror(func);
264 else
265 fprintf(stderr, "%s: unexpected EOF\n", func);
266 }
267}
268
1e1fe529 269#ifdef NO_OPENSSL
9f1ad541 270static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
684ec6c6 271{
684ec6c6
RS
272 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
273 return -1;
1e1fe529
JH
274}
275
1e380ddc 276#else
1e1fe529
JH
277
278static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
279{
1e380ddc
VL
280#if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
281 const SSL_METHOD *meth;
684ec6c6
RS
282#else
283 SSL_METHOD *meth;
1e380ddc 284#endif
684ec6c6
RS
285 SSL_CTX *ctx;
286 int ret;
287
288 SSL_library_init();
289 SSL_load_error_strings();
290
291 if (use_tls_only)
292 meth = TLSv1_method();
f2561fda 293 else
684ec6c6
RS
294 meth = SSLv23_method();
295
296 if (!meth) {
297 ssl_socket_perror("SSLv23_method");
298 return -1;
299 }
300
301 ctx = SSL_CTX_new(meth);
302
303 if (verify)
304 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
305
306 if (!SSL_CTX_set_default_verify_paths(ctx)) {
307 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
308 return -1;
309 }
310 sock->ssl = SSL_new(ctx);
311 if (!sock->ssl) {
312 ssl_socket_perror("SSL_new");
313 return -1;
314 }
7a7796e9
EFL
315 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
316 ssl_socket_perror("SSL_set_rfd");
317 return -1;
318 }
319 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
320 ssl_socket_perror("SSL_set_wfd");
684ec6c6
RS
321 return -1;
322 }
323
324 ret = SSL_connect(sock->ssl);
325 if (ret <= 0) {
326 socket_perror("SSL_connect", sock, ret);
327 return -1;
328 }
329
330 return 0;
f2561fda 331}
1e1fe529 332#endif
f2561fda 333
9f1ad541 334static int socket_read(struct imap_socket *sock, char *buf, int len)
f2561fda 335{
684ec6c6
RS
336 ssize_t n;
337#ifndef NO_OPENSSL
338 if (sock->ssl)
339 n = SSL_read(sock->ssl, buf, len);
340 else
341#endif
7a7796e9 342 n = xread(sock->fd[0], buf, len);
f2561fda 343 if (n <= 0) {
95c53908 344 socket_perror("read", sock, n);
7a7796e9
EFL
345 close(sock->fd[0]);
346 close(sock->fd[1]);
347 sock->fd[0] = sock->fd[1] = -1;
f2561fda
MM
348 }
349 return n;
350}
351
9f1ad541 352static int socket_write(struct imap_socket *sock, const char *buf, int len)
f2561fda 353{
684ec6c6
RS
354 int n;
355#ifndef NO_OPENSSL
356 if (sock->ssl)
357 n = SSL_write(sock->ssl, buf, len);
358 else
359#endif
7a7796e9 360 n = write_in_full(sock->fd[1], buf, len);
f2561fda 361 if (n != len) {
95c53908 362 socket_perror("write", sock, n);
7a7796e9
EFL
363 close(sock->fd[0]);
364 close(sock->fd[1]);
365 sock->fd[0] = sock->fd[1] = -1;
f2561fda
MM
366 }
367 return n;
368}
369
9f1ad541 370static void socket_shutdown(struct imap_socket *sock)
684ec6c6
RS
371{
372#ifndef NO_OPENSSL
373 if (sock->ssl) {
374 SSL_shutdown(sock->ssl);
375 SSL_free(sock->ssl);
376 }
377#endif
7a7796e9
EFL
378 close(sock->fd[0]);
379 close(sock->fd[1]);
684ec6c6
RS
380}
381
f2561fda 382/* simple line buffering */
9f1ad541 383static int buffer_gets(struct imap_buffer *b, char **s)
f2561fda
MM
384{
385 int n;
386 int start = b->offset;
387
388 *s = b->buf + start;
389
390 for (;;) {
391 /* make sure we have enough data to read the \r\n sequence */
392 if (b->offset + 1 >= b->bytes) {
393 if (start) {
394 /* shift down used bytes */
395 *s = b->buf;
396
95c53908 397 assert(start <= b->bytes);
f2561fda
MM
398 n = b->bytes - start;
399
400 if (n)
173a9cbe 401 memmove(b->buf, b->buf + start, n);
f2561fda
MM
402 b->offset -= start;
403 b->bytes = n;
404 start = 0;
405 }
406
95c53908
RS
407 n = socket_read(&b->sock, b->buf + b->bytes,
408 sizeof(b->buf) - b->bytes);
f2561fda
MM
409
410 if (n <= 0)
411 return -1;
412
413 b->bytes += n;
414 }
415
416 if (b->buf[b->offset] == '\r') {
95c53908 417 assert(b->offset + 1 < b->bytes);
f2561fda
MM
418 if (b->buf[b->offset + 1] == '\n') {
419 b->buf[b->offset] = 0; /* terminate the string */
420 b->offset += 2; /* next line */
421 if (Verbose)
95c53908 422 puts(*s);
f2561fda
MM
423 return 0;
424 }
425 }
426
427 b->offset++;
428 }
429 /* not reached */
430}
431
95c53908 432static void imap_info(const char *msg, ...)
f2561fda
MM
433{
434 va_list va;
435
436 if (!Quiet) {
95c53908
RS
437 va_start(va, msg);
438 vprintf(msg, va);
439 va_end(va);
440 fflush(stdout);
f2561fda
MM
441 }
442}
443
95c53908 444static void imap_warn(const char *msg, ...)
f2561fda
MM
445{
446 va_list va;
447
448 if (Quiet < 2) {
95c53908
RS
449 va_start(va, msg);
450 vfprintf(stderr, msg, va);
451 va_end(va);
f2561fda
MM
452 }
453}
454
95c53908 455static char *next_arg(char **s)
f2561fda
MM
456{
457 char *ret;
458
459 if (!s || !*s)
5142db69 460 return NULL;
95c53908 461 while (isspace((unsigned char) **s))
f2561fda
MM
462 (*s)++;
463 if (!**s) {
5142db69
RS
464 *s = NULL;
465 return NULL;
f2561fda
MM
466 }
467 if (**s == '"') {
468 ++*s;
469 ret = *s;
95c53908 470 *s = strchr(*s, '"');
f2561fda
MM
471 } else {
472 ret = *s;
95c53908 473 while (**s && !isspace((unsigned char) **s))
f2561fda
MM
474 (*s)++;
475 }
476 if (*s) {
477 if (**s)
478 *(*s)++ = 0;
479 if (!**s)
5142db69 480 *s = NULL;
f2561fda
MM
481 }
482 return ret;
483}
484
9f1ad541 485static void free_generic_messages(struct message *msgs)
f2561fda 486{
9f1ad541 487 struct message *tmsg;
f2561fda
MM
488
489 for (; msgs; msgs = tmsg) {
490 tmsg = msgs->next;
95c53908 491 free(msgs);
f2561fda
MM
492 }
493}
494
95c53908 495static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
f2561fda
MM
496{
497 int ret;
498 va_list va;
499
95c53908
RS
500 va_start(va, fmt);
501 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
d7530708 502 die("Fatal: buffer too small. Please report a bug.");
95c53908 503 va_end(va);
f2561fda
MM
504 return ret;
505}
506
9f1ad541 507static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx,
95c53908
RS
508 struct imap_cmd_cb *cb,
509 const char *fmt, va_list ap)
f2561fda 510{
9f1ad541 511 struct imap *imap = ctx->imap;
f2561fda
MM
512 struct imap_cmd *cmd;
513 int n, bufl;
514 char buf[1024];
515
95c53908
RS
516 cmd = xmalloc(sizeof(struct imap_cmd));
517 nfvasprintf(&cmd->cmd, fmt, ap);
f2561fda
MM
518 cmd->tag = ++imap->nexttag;
519
520 if (cb)
521 cmd->cb = *cb;
522 else
95c53908 523 memset(&cmd->cb, 0, sizeof(cmd->cb));
f2561fda
MM
524
525 while (imap->literal_pending)
95c53908 526 get_cmd_result(ctx, NULL);
f2561fda 527
1702b138
ÆAB
528 if (!cmd->cb.data)
529 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
530 else
531 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
532 cmd->tag, cmd->cmd, cmd->cb.dlen,
533 CAP(LITERALPLUS) ? "+" : "");
534
f2561fda
MM
535 if (Verbose) {
536 if (imap->num_in_progress)
95c53908
RS
537 printf("(%d in progress) ", imap->num_in_progress);
538 if (memcmp(cmd->cmd, "LOGIN", 5))
539 printf(">>> %s", buf);
f2561fda 540 else
95c53908 541 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
f2561fda 542 }
95c53908
RS
543 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
544 free(cmd->cmd);
545 free(cmd);
8e0f7003 546 if (cb)
95c53908 547 free(cb->data);
f2561fda
MM
548 return NULL;
549 }
550 if (cmd->cb.data) {
551 if (CAP(LITERALPLUS)) {
95c53908
RS
552 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
553 free(cmd->cb.data);
f2561fda 554 if (n != cmd->cb.dlen ||
8e76bf3f 555 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
95c53908
RS
556 free(cmd->cmd);
557 free(cmd);
f2561fda
MM
558 return NULL;
559 }
5142db69 560 cmd->cb.data = NULL;
f2561fda
MM
561 } else
562 imap->literal_pending = 1;
563 } else if (cmd->cb.cont)
564 imap->literal_pending = 1;
5142db69 565 cmd->next = NULL;
f2561fda
MM
566 *imap->in_progress_append = cmd;
567 imap->in_progress_append = &cmd->next;
568 imap->num_in_progress++;
569 return cmd;
570}
571
28bea9e5 572__attribute__((format (printf, 3, 4)))
9f1ad541 573static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
95c53908
RS
574 struct imap_cmd_cb *cb,
575 const char *fmt, ...)
f2561fda
MM
576{
577 struct imap_cmd *ret;
578 va_list ap;
579
95c53908
RS
580 va_start(ap, fmt);
581 ret = v_issue_imap_cmd(ctx, cb, fmt, ap);
582 va_end(ap);
f2561fda
MM
583 return ret;
584}
585
28bea9e5 586__attribute__((format (printf, 3, 4)))
9f1ad541 587static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
95c53908 588 const char *fmt, ...)
f2561fda
MM
589{
590 va_list ap;
591 struct imap_cmd *cmdp;
592
95c53908
RS
593 va_start(ap, fmt);
594 cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
595 va_end(ap);
f2561fda
MM
596 if (!cmdp)
597 return RESP_BAD;
598
95c53908 599 return get_cmd_result(ctx, cmdp);
f2561fda
MM
600}
601
28bea9e5 602__attribute__((format (printf, 3, 4)))
9f1ad541 603static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
95c53908 604 const char *fmt, ...)
f2561fda
MM
605{
606 va_list ap;
607 struct imap_cmd *cmdp;
608
95c53908
RS
609 va_start(ap, fmt);
610 cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap);
611 va_end(ap);
f2561fda
MM
612 if (!cmdp)
613 return DRV_STORE_BAD;
614
95c53908 615 switch (get_cmd_result(ctx, cmdp)) {
f2561fda
MM
616 case RESP_BAD: return DRV_STORE_BAD;
617 case RESP_NO: return DRV_MSG_BAD;
618 default: return DRV_OK;
619 }
620}
621
9f1ad541 622static int is_atom(struct imap_list *list)
f2561fda
MM
623{
624 return list && list->val && list->val != NIL && list->val != LIST;
625}
626
9f1ad541 627static int is_list(struct imap_list *list)
f2561fda
MM
628{
629 return list && list->val == LIST;
630}
631
9f1ad541 632static void free_list(struct imap_list *list)
f2561fda 633{
9f1ad541 634 struct imap_list *tmp;
f2561fda
MM
635
636 for (; list; list = tmp) {
637 tmp = list->next;
95c53908
RS
638 if (is_list(list))
639 free_list(list->child);
640 else if (is_atom(list))
641 free(list->val);
642 free(list);
f2561fda
MM
643 }
644}
645
9f1ad541 646static int parse_imap_list_l(struct imap *imap, char **sp, struct imap_list **curp, int level)
f2561fda 647{
9f1ad541 648 struct imap_list *cur;
f2561fda
MM
649 char *s = *sp, *p;
650 int n, bytes;
651
652 for (;;) {
95c53908 653 while (isspace((unsigned char)*s))
f2561fda
MM
654 s++;
655 if (level && *s == ')') {
656 s++;
657 break;
658 }
95c53908 659 *curp = cur = xmalloc(sizeof(*cur));
f2561fda 660 curp = &cur->next;
5142db69 661 cur->val = NULL; /* for clean bail */
f2561fda
MM
662 if (*s == '(') {
663 /* sublist */
664 s++;
665 cur->val = LIST;
95c53908 666 if (parse_imap_list_l(imap, &s, &cur->child, level + 1))
f2561fda
MM
667 goto bail;
668 } else if (imap && *s == '{') {
669 /* literal */
95c53908 670 bytes = cur->len = strtol(s + 1, &s, 10);
f2561fda
MM
671 if (*s != '}')
672 goto bail;
673
95c53908 674 s = cur->val = xmalloc(cur->len);
f2561fda
MM
675
676 /* dump whats left over in the input buffer */
677 n = imap->buf.bytes - imap->buf.offset;
678
679 if (n > bytes)
680 /* the entire message fit in the buffer */
681 n = bytes;
682
95c53908 683 memcpy(s, imap->buf.buf + imap->buf.offset, n);
f2561fda
MM
684 s += n;
685 bytes -= n;
686
687 /* mark that we used part of the buffer */
688 imap->buf.offset += n;
689
690 /* now read the rest of the message */
691 while (bytes > 0) {
95c53908 692 if ((n = socket_read(&imap->buf.sock, s, bytes)) <= 0)
f2561fda
MM
693 goto bail;
694 s += n;
695 bytes -= n;
696 }
697
95c53908 698 if (buffer_gets(&imap->buf, &s))
f2561fda
MM
699 goto bail;
700 } else if (*s == '"') {
701 /* quoted string */
702 s++;
703 p = s;
704 for (; *s != '"'; s++)
705 if (!*s)
706 goto bail;
707 cur->len = s - p;
708 s++;
182af834 709 cur->val = xmemdupz(p, cur->len);
f2561fda
MM
710 } else {
711 /* atom */
712 p = s;
95c53908 713 for (; *s && !isspace((unsigned char)*s); s++)
f2561fda
MM
714 if (level && *s == ')')
715 break;
716 cur->len = s - p;
9f1ad541 717 if (cur->len == 3 && !memcmp("NIL", p, 3))
f2561fda 718 cur->val = NIL;
9f1ad541 719 else
182af834 720 cur->val = xmemdupz(p, cur->len);
f2561fda
MM
721 }
722
723 if (!level)
724 break;
725 if (!*s)
726 goto bail;
727 }
728 *sp = s;
5142db69 729 *curp = NULL;
f2561fda
MM
730 return 0;
731
9f1ad541 732bail:
5142db69 733 *curp = NULL;
f2561fda
MM
734 return -1;
735}
736
9f1ad541 737static struct imap_list *parse_imap_list(struct imap *imap, char **sp)
f2561fda 738{
9f1ad541 739 struct imap_list *head;
f2561fda 740
95c53908 741 if (!parse_imap_list_l(imap, sp, &head, 0))
f2561fda 742 return head;
95c53908 743 free_list(head);
f2561fda
MM
744 return NULL;
745}
746
9f1ad541 747static struct imap_list *parse_list(char **sp)
f2561fda 748{
95c53908 749 return parse_imap_list(NULL, sp);
f2561fda
MM
750}
751
9f1ad541 752static void parse_capability(struct imap *imap, char *cmd)
f2561fda
MM
753{
754 char *arg;
755 unsigned i;
756
757 imap->caps = 0x80000000;
95c53908 758 while ((arg = next_arg(&cmd)))
f2561fda 759 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
95c53908 760 if (!strcmp(cap_list[i], arg))
f2561fda
MM
761 imap->caps |= 1 << i;
762 imap->rcaps = imap->caps;
763}
764
9f1ad541 765static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
95c53908 766 char *s)
f2561fda 767{
9f1ad541 768 struct imap *imap = ctx->imap;
f2561fda
MM
769 char *arg, *p;
770
771 if (*s != '[')
772 return RESP_OK; /* no response code */
773 s++;
95c53908
RS
774 if (!(p = strchr(s, ']'))) {
775 fprintf(stderr, "IMAP error: malformed response code\n");
f2561fda
MM
776 return RESP_BAD;
777 }
778 *p++ = 0;
95c53908
RS
779 arg = next_arg(&s);
780 if (!strcmp("UIDVALIDITY", arg)) {
781 if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg))) {
782 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
f2561fda
MM
783 return RESP_BAD;
784 }
95c53908
RS
785 } else if (!strcmp("UIDNEXT", arg)) {
786 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
787 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
f2561fda
MM
788 return RESP_BAD;
789 }
95c53908
RS
790 } else if (!strcmp("CAPABILITY", arg)) {
791 parse_capability(imap, s);
792 } else if (!strcmp("ALERT", arg)) {
f2561fda
MM
793 /* RFC2060 says that these messages MUST be displayed
794 * to the user
795 */
95c53908
RS
796 for (; isspace((unsigned char)*p); p++);
797 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
798 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
799 if (!(arg = next_arg(&s)) || !(ctx->gen.uidvalidity = atoi(arg)) ||
9f1ad541 800 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
95c53908 801 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
f2561fda
MM
802 return RESP_BAD;
803 }
804 }
805 return RESP_OK;
806}
807
9f1ad541 808static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
f2561fda 809{
9f1ad541 810 struct imap *imap = ctx->imap;
f2561fda
MM
811 struct imap_cmd *cmdp, **pcmdp, *ncmdp;
812 char *cmd, *arg, *arg1, *p;
813 int n, resp, resp2, tag;
814
815 for (;;) {
95c53908 816 if (buffer_gets(&imap->buf, &cmd))
f2561fda
MM
817 return RESP_BAD;
818
95c53908 819 arg = next_arg(&cmd);
f2561fda 820 if (*arg == '*') {
95c53908 821 arg = next_arg(&cmd);
f2561fda 822 if (!arg) {
95c53908 823 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
f2561fda
MM
824 return RESP_BAD;
825 }
826
95c53908
RS
827 if (!strcmp("NAMESPACE", arg)) {
828 imap->ns_personal = parse_list(&cmd);
829 imap->ns_other = parse_list(&cmd);
830 imap->ns_shared = parse_list(&cmd);
831 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
832 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
833 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
f2561fda 834 return resp;
95c53908
RS
835 } else if (!strcmp("CAPABILITY", arg))
836 parse_capability(imap, cmd);
837 else if ((arg1 = next_arg(&cmd))) {
838 if (!strcmp("EXISTS", arg1))
839 ctx->gen.count = atoi(arg);
840 else if (!strcmp("RECENT", arg1))
841 ctx->gen.recent = atoi(arg);
f2561fda 842 } else {
95c53908 843 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
f2561fda
MM
844 return RESP_BAD;
845 }
846 } else if (!imap->in_progress) {
95c53908 847 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
f2561fda
MM
848 return RESP_BAD;
849 } else if (*arg == '+') {
850 /* This can happen only with the last command underway, as
851 it enforces a round-trip. */
852 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
853 offsetof(struct imap_cmd, next));
854 if (cmdp->cb.data) {
95c53908
RS
855 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
856 free(cmdp->cb.data);
5142db69 857 cmdp->cb.data = NULL;
f2561fda
MM
858 if (n != (int)cmdp->cb.dlen)
859 return RESP_BAD;
860 } else if (cmdp->cb.cont) {
95c53908 861 if (cmdp->cb.cont(ctx, cmdp, cmd))
f2561fda
MM
862 return RESP_BAD;
863 } else {
95c53908 864 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
f2561fda
MM
865 return RESP_BAD;
866 }
95c53908 867 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
f2561fda
MM
868 return RESP_BAD;
869 if (!cmdp->cb.cont)
870 imap->literal_pending = 0;
871 if (!tcmd)
872 return DRV_OK;
873 } else {
95c53908 874 tag = atoi(arg);
f2561fda
MM
875 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
876 if (cmdp->tag == tag)
877 goto gottag;
95c53908 878 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
f2561fda 879 return RESP_BAD;
9f1ad541 880 gottag:
f2561fda
MM
881 if (!(*pcmdp = cmdp->next))
882 imap->in_progress_append = pcmdp;
883 imap->num_in_progress--;
884 if (cmdp->cb.cont || cmdp->cb.data)
885 imap->literal_pending = 0;
95c53908
RS
886 arg = next_arg(&cmd);
887 if (!strcmp("OK", arg))
f2561fda
MM
888 resp = DRV_OK;
889 else {
95c53908
RS
890 if (!strcmp("NO", arg)) {
891 if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */
892 p = strchr(cmdp->cmd, '"');
28bea9e5 893 if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) {
f2561fda
MM
894 resp = RESP_BAD;
895 goto normal;
896 }
897 /* not waiting here violates the spec, but a server that does not
898 grok this nonetheless violates it too. */
899 cmdp->cb.create = 0;
95c53908 900 if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) {
f2561fda
MM
901 resp = RESP_BAD;
902 goto normal;
903 }
95c53908
RS
904 free(cmdp->cmd);
905 free(cmdp);
f2561fda
MM
906 if (!tcmd)
907 return 0; /* ignored */
908 if (cmdp == tcmd)
909 tcmd = ncmdp;
910 continue;
911 }
912 resp = RESP_NO;
95c53908 913 } else /*if (!strcmp("BAD", arg))*/
f2561fda 914 resp = RESP_BAD;
95c53908
RS
915 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
916 memcmp(cmdp->cmd, "LOGIN", 5) ?
f2561fda
MM
917 cmdp->cmd : "LOGIN <user> <pass>",
918 arg, cmd ? cmd : "");
919 }
95c53908 920 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
f2561fda 921 resp = resp2;
9f1ad541 922 normal:
f2561fda 923 if (cmdp->cb.done)
95c53908
RS
924 cmdp->cb.done(ctx, cmdp, resp);
925 free(cmdp->cb.data);
926 free(cmdp->cmd);
927 free(cmdp);
f2561fda
MM
928 if (!tcmd || tcmd == cmdp)
929 return resp;
930 }
931 }
932 /* not reached */
933}
934
9f1ad541 935static void imap_close_server(struct imap_store *ictx)
f2561fda 936{
9f1ad541 937 struct imap *imap = ictx->imap;
f2561fda 938
7a7796e9 939 if (imap->buf.sock.fd[0] != -1) {
95c53908
RS
940 imap_exec(ictx, NULL, "LOGOUT");
941 socket_shutdown(&imap->buf.sock);
f2561fda 942 }
95c53908
RS
943 free_list(imap->ns_personal);
944 free_list(imap->ns_other);
945 free_list(imap->ns_shared);
946 free(imap);
f2561fda
MM
947}
948
9f1ad541 949static void imap_close_store(struct store *ctx)
f2561fda 950{
9f1ad541 951 imap_close_server((struct imap_store *)ctx);
95c53908
RS
952 free_generic_messages(ctx->msgs);
953 free(ctx);
f2561fda
MM
954}
955
ae9c606e
HM
956#ifndef NO_OPENSSL
957
958/*
959 * hexchar() and cram() functions are based on the code from the isync
960 * project (http://isync.sf.net/).
961 */
962static char hexchar(unsigned int b)
963{
964 return b < 10 ? '0' + b : 'a' + (b - 10);
965}
966
967#define ENCODED_SIZE(n) (4*((n+2)/3))
968static char *cram(const char *challenge_64, const char *user, const char *pass)
969{
970 int i, resp_len, encoded_len, decoded_len;
971 HMAC_CTX hmac;
972 unsigned char hash[16];
973 char hex[33];
974 char *response, *response_64, *challenge;
975
976 /*
977 * length of challenge_64 (i.e. base-64 encoded string) is a good
978 * enough upper bound for challenge (decoded result).
979 */
980 encoded_len = strlen(challenge_64);
981 challenge = xmalloc(encoded_len);
982 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
983 (unsigned char *)challenge_64, encoded_len);
984 if (decoded_len < 0)
985 die("invalid challenge %s", challenge_64);
986 HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5());
987 HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len);
988 HMAC_Final(&hmac, hash, NULL);
989 HMAC_CTX_cleanup(&hmac);
990
991 hex[32] = 0;
992 for (i = 0; i < 16; i++) {
993 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
994 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
995 }
996
997 /* response: "<user> <digest in hex>" */
998 resp_len = strlen(user) + 1 + strlen(hex) + 1;
999 response = xmalloc(resp_len);
1000 sprintf(response, "%s %s", user, hex);
1001
1002 response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
1003 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
1004 (unsigned char *)response, resp_len);
1005 if (encoded_len < 0)
1006 die("EVP_EncodeBlock error");
1007 response_64[encoded_len] = '\0';
1008 return (char *)response_64;
1009}
1010
1011#else
1012
1013static char *cram(const char *challenge_64, const char *user, const char *pass)
1014{
1015 die("If you want to use CRAM-MD5 authenticate method, "
1016 "you have to build git-imap-send with OpenSSL library.");
1017}
1018
1019#endif
1020
1021static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
1022{
1023 int ret;
1024 char *response;
1025
1026 response = cram(prompt, server.user, server.pass);
1027
1028 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
1029 if (ret != strlen(response))
1030 return error("IMAP error: sending response failed\n");
1031
1032 free(response);
1033
1034 return 0;
1035}
1036
9f1ad541 1037static struct store *imap_open_store(struct imap_server_conf *srvc)
f2561fda 1038{
9f1ad541
JH
1039 struct imap_store *ctx;
1040 struct imap *imap;
f2561fda 1041 char *arg, *rsp;
c94d2dd0 1042 int s = -1, preauth;
f2561fda 1043
95c53908 1044 ctx = xcalloc(sizeof(*ctx), 1);
f2561fda 1045
95c53908 1046 ctx->imap = imap = xcalloc(sizeof(*imap), 1);
7a7796e9 1047 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
f2561fda
MM
1048 imap->in_progress_append = &imap->in_progress;
1049
1050 /* open connection to IMAP server */
1051
1052 if (srvc->tunnel) {
ac0ba18d 1053 const char *argv[] = { srvc->tunnel, NULL };
c2e86add 1054 struct child_process tunnel = {NULL};
f2561fda 1055
c94d2dd0 1056 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
f2561fda 1057
c94d2dd0 1058 tunnel.argv = argv;
ac0ba18d 1059 tunnel.use_shell = 1;
c94d2dd0
EFL
1060 tunnel.in = -1;
1061 tunnel.out = -1;
1062 if (start_command(&tunnel))
1063 die("cannot start proxy %s", argv[0]);
f2561fda 1064
c94d2dd0
EFL
1065 imap->buf.sock.fd[0] = tunnel.out;
1066 imap->buf.sock.fd[1] = tunnel.in;
f2561fda 1067
95c53908 1068 imap_info("ok\n");
f2561fda 1069 } else {
94ad2437
BK
1070#ifndef NO_IPV6
1071 struct addrinfo hints, *ai0, *ai;
1072 int gai;
1073 char portstr[6];
1074
1702b138 1075 snprintf(portstr, sizeof(portstr), "%d", srvc->port);
94ad2437
BK
1076
1077 memset(&hints, 0, sizeof(hints));
1078 hints.ai_socktype = SOCK_STREAM;
1079 hints.ai_protocol = IPPROTO_TCP;
1080
1081 imap_info("Resolving %s... ", srvc->host);
1082 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
1083 if (gai) {
1084 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
1085 goto bail;
1086 }
1087 imap_info("ok\n");
1088
1089 for (ai0 = ai; ai; ai = ai->ai_next) {
1090 char addr[NI_MAXHOST];
1091
1092 s = socket(ai->ai_family, ai->ai_socktype,
1093 ai->ai_protocol);
1094 if (s < 0)
1095 continue;
1096
1097 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1098 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1099 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1100
1101 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1102 close(s);
1103 s = -1;
1104 perror("connect");
1105 continue;
1106 }
1107
1108 break;
1109 }
1110 freeaddrinfo(ai0);
1111#else /* NO_IPV6 */
1112 struct hostent *he;
1113 struct sockaddr_in addr;
1114
95c53908
RS
1115 memset(&addr, 0, sizeof(addr));
1116 addr.sin_port = htons(srvc->port);
f2561fda
MM
1117 addr.sin_family = AF_INET;
1118
95c53908
RS
1119 imap_info("Resolving %s... ", srvc->host);
1120 he = gethostbyname(srvc->host);
f2561fda 1121 if (!he) {
95c53908 1122 perror("gethostbyname");
f2561fda
MM
1123 goto bail;
1124 }
95c53908 1125 imap_info("ok\n");
f2561fda
MM
1126
1127 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1128
95c53908 1129 s = socket(PF_INET, SOCK_STREAM, 0);
f2561fda 1130
95c53908
RS
1131 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1132 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1133 close(s);
94ad2437 1134 s = -1;
95c53908 1135 perror("connect");
94ad2437
BK
1136 }
1137#endif
1138 if (s < 0) {
1139 fputs("Error: unable to connect to server.\n", stderr);
f2561fda
MM
1140 goto bail;
1141 }
f2561fda 1142
7a7796e9
EFL
1143 imap->buf.sock.fd[0] = s;
1144 imap->buf.sock.fd[1] = dup(s);
f2561fda 1145
684ec6c6
RS
1146 if (srvc->use_ssl &&
1147 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1148 close(s);
1149 goto bail;
1150 }
95c53908 1151 imap_info("ok\n");
f2561fda
MM
1152 }
1153
1154 /* read the greeting string */
95c53908
RS
1155 if (buffer_gets(&imap->buf, &rsp)) {
1156 fprintf(stderr, "IMAP error: no greeting response\n");
f2561fda
MM
1157 goto bail;
1158 }
95c53908
RS
1159 arg = next_arg(&rsp);
1160 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1161 fprintf(stderr, "IMAP error: invalid greeting response\n");
f2561fda
MM
1162 goto bail;
1163 }
1164 preauth = 0;
95c53908 1165 if (!strcmp("PREAUTH", arg))
f2561fda 1166 preauth = 1;
95c53908
RS
1167 else if (strcmp("OK", arg) != 0) {
1168 fprintf(stderr, "IMAP error: unknown greeting response\n");
f2561fda
MM
1169 goto bail;
1170 }
95c53908
RS
1171 parse_response_code(ctx, NULL, rsp);
1172 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
f2561fda
MM
1173 goto bail;
1174
1175 if (!preauth) {
684ec6c6
RS
1176#ifndef NO_OPENSSL
1177 if (!srvc->use_ssl && CAP(STARTTLS)) {
d27da38a 1178 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
684ec6c6
RS
1179 goto bail;
1180 if (ssl_socket_connect(&imap->buf.sock, 1,
1181 srvc->ssl_verify))
1182 goto bail;
1183 /* capabilities may have changed, so get the new capabilities */
d27da38a 1184 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
684ec6c6
RS
1185 goto bail;
1186 }
1187#endif
95c53908 1188 imap_info("Logging in...\n");
f2561fda 1189 if (!srvc->user) {
95c53908 1190 fprintf(stderr, "Skipping server %s, no user\n", srvc->host);
f2561fda
MM
1191 goto bail;
1192 }
1193 if (!srvc->pass) {
1194 char prompt[80];
95c53908 1195 sprintf(prompt, "Password (%s@%s): ", srvc->user, srvc->host);
f206063b 1196 arg = git_getpass(prompt);
f2561fda 1197 if (!arg) {
95c53908
RS
1198 perror("getpass");
1199 exit(1);
f2561fda
MM
1200 }
1201 if (!*arg) {
95c53908 1202 fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host);
f2561fda
MM
1203 goto bail;
1204 }
1205 /*
1206 * getpass() returns a pointer to a static buffer. make a copy
1207 * for long term storage.
1208 */
95c53908 1209 srvc->pass = xstrdup(arg);
f2561fda
MM
1210 }
1211 if (CAP(NOLOGIN)) {
95c53908 1212 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
f2561fda
MM
1213 goto bail;
1214 }
ae9c606e
HM
1215
1216 if (srvc->auth_method) {
1217 struct imap_cmd_cb cb;
1218
1219 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1220 if (!CAP(AUTH_CRAM_MD5)) {
1221 fprintf(stderr, "You specified"
1222 "CRAM-MD5 as authentication method, "
1223 "but %s doesn't support it.\n", srvc->host);
1224 goto bail;
1225 }
1226 /* CRAM-MD5 */
1227
1228 memset(&cb, 0, sizeof(cb));
1229 cb.cont = auth_cram_md5;
1230 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1231 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1232 goto bail;
1233 }
1234 } else {
1235 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1236 goto bail;
1237 }
1238 } else {
10439d89
CW
1239 if (!imap->buf.sock.ssl)
1240 imap_warn("*** IMAP Warning *** Password is being "
1241 "sent in the clear\n");
ae9c606e
HM
1242 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1243 fprintf(stderr, "IMAP error: LOGIN failed\n");
1244 goto bail;
1245 }
f2561fda
MM
1246 }
1247 } /* !preauth */
1248
1249 ctx->prefix = "";
1250 ctx->trashnc = 1;
9f1ad541 1251 return (struct store *)ctx;
f2561fda 1252
9f1ad541 1253bail:
95c53908 1254 imap_close_store(&ctx->gen);
5142db69 1255 return NULL;
f2561fda
MM
1256}
1257
95c53908 1258static int imap_make_flags(int flags, char *buf)
f2561fda
MM
1259{
1260 const char *s;
1261 unsigned i, d;
1262
1263 for (i = d = 0; i < ARRAY_SIZE(Flags); i++)
1264 if (flags & (1 << i)) {
1265 buf[d++] = ' ';
1266 buf[d++] = '\\';
1267 for (s = Flags[i]; *s; s++)
1268 buf[d++] = *s;
1269 }
1270 buf[0] = '(';
1271 buf[d++] = ')';
1272 return d;
1273}
1274
67d17630
HM
1275static void lf_to_crlf(struct msg_data *msg)
1276{
1277 char *new;
1278 int i, j, lfnum = 0;
1279
1280 if (msg->data[0] == '\n')
1281 lfnum++;
1282 for (i = 1; i < msg->len; i++) {
1283 if (msg->data[i - 1] != '\r' && msg->data[i] == '\n')
1284 lfnum++;
1285 }
1286
1287 new = xmalloc(msg->len + lfnum);
1288 if (msg->data[0] == '\n') {
1289 new[0] = '\r';
1290 new[1] = '\n';
1291 i = 1;
1292 j = 2;
1293 } else {
1294 new[0] = msg->data[0];
1295 i = 1;
1296 j = 1;
1297 }
1298 for ( ; i < msg->len; i++) {
1299 if (msg->data[i] != '\n') {
1300 new[j++] = msg->data[i];
1301 continue;
1302 }
1303 if (msg->data[i - 1] != '\r')
1304 new[j++] = '\r';
1305 /* otherwise it already had CR before */
1306 new[j++] = '\n';
1307 }
1308 msg->len += lfnum;
1309 free(msg->data);
1310 msg->data = new;
1311}
1312
3a7cba95 1313static int imap_store_msg(struct store *gctx, struct msg_data *data)
f2561fda 1314{
9f1ad541
JH
1315 struct imap_store *ctx = (struct imap_store *)gctx;
1316 struct imap *imap = ctx->imap;
f2561fda 1317 struct imap_cmd_cb cb;
f2561fda 1318 const char *prefix, *box;
3a7cba95
JK
1319 int ret, d;
1320 char flagstr[128];
f2561fda 1321
67d17630 1322 lf_to_crlf(data);
95c53908 1323 memset(&cb, 0, sizeof(cb));
f2561fda 1324
3a7cba95
JK
1325 cb.dlen = data->len;
1326 cb.data = xmalloc(cb.dlen);
1327 memcpy(cb.data, data->data, data->len);
f2561fda
MM
1328
1329 d = 0;
1330 if (data->flags) {
95c53908 1331 d = imap_make_flags(data->flags, flagstr);
f2561fda
MM
1332 flagstr[d++] = ' ';
1333 }
1334 flagstr[d] = 0;
1335
3a7cba95
JK
1336 box = gctx->name;
1337 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1338 cb.create = 0;
95c53908 1339 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" %s", prefix, box, flagstr);
f2561fda
MM
1340 imap->caps = imap->rcaps;
1341 if (ret != DRV_OK)
1342 return ret;
3a7cba95 1343 gctx->count++;
f2561fda
MM
1344
1345 return DRV_OK;
1346}
1347
c64d84f1
JW
1348static void encode_html_chars(struct strbuf *p)
1349{
1350 int i;
1351 for (i = 0; i < p->len; i++) {
1352 if (p->buf[i] == '&')
1353 strbuf_splice(p, i, 1, "&amp;", 5);
1354 if (p->buf[i] == '<')
1355 strbuf_splice(p, i, 1, "&lt;", 4);
1356 if (p->buf[i] == '>')
1357 strbuf_splice(p, i, 1, "&gt;", 4);
1358 if (p->buf[i] == '"')
1359 strbuf_splice(p, i, 1, "&quot;", 6);
1360 }
1361}
1362static void wrap_in_html(struct msg_data *msg)
1363{
1364 struct strbuf buf = STRBUF_INIT;
1365 struct strbuf **lines;
1366 struct strbuf **p;
1367 static char *content_type = "Content-Type: text/html;\n";
1368 static char *pre_open = "<pre>\n";
1369 static char *pre_close = "</pre>\n";
1370 int added_header = 0;
1371
1372 strbuf_attach(&buf, msg->data, msg->len, msg->len);
1373 lines = strbuf_split(&buf, '\n');
1374 strbuf_release(&buf);
1375 for (p = lines; *p; p++) {
1376 if (! added_header) {
1377 if ((*p)->len == 1 && *((*p)->buf) == '\n') {
1378 strbuf_addstr(&buf, content_type);
1379 strbuf_addbuf(&buf, *p);
1380 strbuf_addstr(&buf, pre_open);
1381 added_header = 1;
1382 continue;
1383 }
1384 }
1385 else
1386 encode_html_chars(*p);
1387 strbuf_addbuf(&buf, *p);
1388 }
1389 strbuf_addstr(&buf, pre_close);
1390 strbuf_list_free(lines);
1391 msg->len = buf.len;
1392 msg->data = strbuf_detach(&buf, NULL);
1393}
1394
f2561fda
MM
1395#define CHUNKSIZE 0x1000
1396
9f1ad541 1397static int read_message(FILE *f, struct msg_data *msg)
f2561fda 1398{
f285a2d7 1399 struct strbuf buf = STRBUF_INIT;
f2561fda 1400
635d043f 1401 memset(msg, 0, sizeof(*msg));
635d043f
PH
1402
1403 do {
1404 if (strbuf_fread(&buf, CHUNKSIZE, f) <= 0)
f2561fda 1405 break;
635d043f
PH
1406 } while (!feof(f));
1407
1408 msg->len = buf.len;
b315c5c0 1409 msg->data = strbuf_detach(&buf, NULL);
f2561fda
MM
1410 return msg->len;
1411}
1412
9f1ad541 1413static int count_messages(struct msg_data *msg)
f2561fda
MM
1414{
1415 int count = 0;
1416 char *p = msg->data;
1417
1418 while (1) {
1968d77d 1419 if (!prefixcmp(p, "From ")) {
4916c8f9
RR
1420 p = strstr(p+5, "\nFrom: ");
1421 if (!p) break;
1422 p = strstr(p+7, "\nDate: ");
1423 if (!p) break;
1424 p = strstr(p+7, "\nSubject: ");
1425 if (!p) break;
1426 p += 10;
f2561fda 1427 count++;
f2561fda 1428 }
95c53908 1429 p = strstr(p+5, "\nFrom ");
f2561fda
MM
1430 if (!p)
1431 break;
1432 p++;
1433 }
1434 return count;
1435}
1436
9f1ad541 1437static int split_msg(struct msg_data *all_msgs, struct msg_data *msg, int *ofs)
f2561fda
MM
1438{
1439 char *p, *data;
1440
95c53908 1441 memset(msg, 0, sizeof *msg);
f2561fda
MM
1442 if (*ofs >= all_msgs->len)
1443 return 0;
1444
95c53908 1445 data = &all_msgs->data[*ofs];
f2561fda
MM
1446 msg->len = all_msgs->len - *ofs;
1447
1968d77d 1448 if (msg->len < 5 || prefixcmp(data, "From "))
f2561fda
MM
1449 return 0;
1450
95c53908 1451 p = strchr(data, '\n');
e0b08307
MA
1452 if (p) {
1453 p = &p[1];
1454 msg->len -= p-data;
1455 *ofs += p-data;
1456 data = p;
1457 }
1458
95c53908 1459 p = strstr(data, "\nFrom ");
f2561fda
MM
1460 if (p)
1461 msg->len = &p[1] - data;
1462
182af834 1463 msg->data = xmemdupz(data, msg->len);
f2561fda 1464 *ofs += msg->len;
a6080a0a 1465 return 1;
f2561fda
MM
1466}
1467
f2561fda
MM
1468static char *imap_folder;
1469
95c53908 1470static int git_imap_config(const char *key, const char *val, void *cb)
f2561fda
MM
1471{
1472 char imap_key[] = "imap.";
1473
95c53908 1474 if (strncmp(key, imap_key, sizeof imap_key - 1))
f2561fda 1475 return 0;
3c17c34a 1476
f2561fda
MM
1477 key += sizeof imap_key - 1;
1478
ace706e2
JH
1479 /* check booleans first, and barf on others */
1480 if (!strcmp("sslverify", key))
1481 server.ssl_verify = git_config_bool(key, val);
1482 else if (!strcmp("preformattedhtml", key))
1483 server.use_html = git_config_bool(key, val);
1484 else if (!val)
1485 return config_error_nonbool(key);
1486
95c53908
RS
1487 if (!strcmp("folder", key)) {
1488 imap_folder = xstrdup(val);
1489 } else if (!strcmp("host", key)) {
684ec6c6
RS
1490 if (!prefixcmp(val, "imap:"))
1491 val += 5;
1492 else if (!prefixcmp(val, "imaps:")) {
1493 val += 6;
1494 server.use_ssl = 1;
f2561fda 1495 }
1968d77d 1496 if (!prefixcmp(val, "//"))
f2561fda 1497 val += 2;
95c53908 1498 server.host = xstrdup(val);
9f1ad541 1499 } else if (!strcmp("user", key))
95c53908
RS
1500 server.user = xstrdup(val);
1501 else if (!strcmp("pass", key))
1502 server.pass = xstrdup(val);
1503 else if (!strcmp("port", key))
1504 server.port = git_config_int(key, val);
1505 else if (!strcmp("tunnel", key))
1506 server.tunnel = xstrdup(val);
ae9c606e
HM
1507 else if (!strcmp("authmethod", key))
1508 server.auth_method = xstrdup(val);
1509
f2561fda
MM
1510 return 0;
1511}
1512
95c53908 1513int main(int argc, char **argv)
f2561fda 1514{
9f1ad541
JH
1515 struct msg_data all_msgs, msg;
1516 struct store *ctx = NULL;
f2561fda
MM
1517 int ofs = 0;
1518 int r;
1519 int total, n = 0;
a0406b94 1520 int nongit_ok;
f2561fda 1521
2fb3f6db
SP
1522 git_extract_argv0_path(argv[0]);
1523
9a2861e3
JN
1524 if (argc != 1)
1525 usage(imap_send_usage);
1526
a0406b94 1527 setup_git_directory_gently(&nongit_ok);
ef90d6d4 1528 git_config(git_imap_config, NULL);
f2561fda 1529
684ec6c6
RS
1530 if (!server.port)
1531 server.port = server.use_ssl ? 993 : 143;
1532
f2561fda 1533 if (!imap_folder) {
95c53908 1534 fprintf(stderr, "no imap store specified\n");
f2561fda
MM
1535 return 1;
1536 }
5b67b8e2 1537 if (!server.host) {
34b5cd1f 1538 if (!server.tunnel) {
95c53908 1539 fprintf(stderr, "no imap host specified\n");
34b5cd1f
JK
1540 return 1;
1541 }
1542 server.host = "tunnel";
5b67b8e2 1543 }
f2561fda
MM
1544
1545 /* read the messages */
95c53908 1546 if (!read_message(stdin, &all_msgs)) {
9f1ad541 1547 fprintf(stderr, "nothing to send\n");
f2561fda
MM
1548 return 1;
1549 }
1550
95c53908 1551 total = count_messages(&all_msgs);
1cd88cc9 1552 if (!total) {
9f1ad541 1553 fprintf(stderr, "no messages to send\n");
1cd88cc9
MM
1554 return 1;
1555 }
1556
f2561fda 1557 /* write it to the imap server */
95c53908 1558 ctx = imap_open_store(&server);
f2561fda 1559 if (!ctx) {
9f1ad541 1560 fprintf(stderr, "failed to open store\n");
f2561fda
MM
1561 return 1;
1562 }
1563
9f1ad541 1564 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
f2561fda
MM
1565 ctx->name = imap_folder;
1566 while (1) {
1567 unsigned percent = n * 100 / total;
95c53908
RS
1568 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1569 if (!split_msg(&all_msgs, &msg, &ofs))
f2561fda 1570 break;
c64d84f1
JW
1571 if (server.use_html)
1572 wrap_in_html(&msg);
3a7cba95 1573 r = imap_store_msg(ctx, &msg);
9f1ad541
JH
1574 if (r != DRV_OK)
1575 break;
f2561fda
MM
1576 n++;
1577 }
95c53908 1578 fprintf(stderr, "\n");
f2561fda 1579
95c53908 1580 imap_close_store(ctx);
f2561fda
MM
1581
1582 return 0;
1583}