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README: use markdown syntax
[git.git] / imap-send.c
blob4d3b7737a99de02c42945951e91b4d7ed865611d
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 #include "credential.h"
27 #include "exec_cmd.h"
28 #include "run-command.h"
29 #include "parse-options.h"
30 #ifdef NO_OPENSSL
31 typedef void *SSL;
32 #endif
33 #ifdef USE_CURL_FOR_IMAP_SEND
34 #include "http.h"
35 #endif
36
37 #if defined(USE_CURL_FOR_IMAP_SEND) && defined(NO_OPENSSL)
38 /* only available option */
39 #define USE_CURL_DEFAULT 1
40 #else
41 /* strictly opt in */
42 #define USE_CURL_DEFAULT 0
43 #endif
44
45 static int verbosity;
46 static int use_curl = USE_CURL_DEFAULT;
47
48 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
49
50 static struct option imap_send_options[] = {
51 OPT__VERBOSITY(&verbosity),
52 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
53 OPT_END()
54 };
55
56 #undef DRV_OK
57 #define DRV_OK 0
58 #define DRV_MSG_BAD -1
59 #define DRV_BOX_BAD -2
60 #define DRV_STORE_BAD -3
61
62 __attribute__((format (printf, 1, 2)))
63 static void imap_info(const char *, ...);
64 __attribute__((format (printf, 1, 2)))
65 static void imap_warn(const char *, ...);
66
67 static char *next_arg(char **);
68
69 __attribute__((format (printf, 3, 4)))
70 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
71
72 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
73 {
74 int len;
75 char tmp[8192];
76
77 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
78 if (len < 0)
79 die("Fatal: Out of memory");
80 if (len >= sizeof(tmp))
81 die("imap command overflow!");
82 *strp = xmemdupz(tmp, len);
83 return len;
84 }
85
86 struct imap_server_conf {
87 char *name;
88 char *tunnel;
89 char *host;
90 int port;
91 char *folder;
92 char *user;
93 char *pass;
94 int use_ssl;
95 int ssl_verify;
96 int use_html;
97 char *auth_method;
98 };
99
100 static struct imap_server_conf server = {
101 NULL, /* name */
102 NULL, /* tunnel */
103 NULL, /* host */
104 0, /* port */
105 NULL, /* folder */
106 NULL, /* user */
107 NULL, /* pass */
108 0, /* use_ssl */
109 1, /* ssl_verify */
110 0, /* use_html */
111 NULL, /* auth_method */
112 };
113
114 struct imap_socket {
115 int fd[2];
116 SSL *ssl;
117 };
118
119 struct imap_buffer {
120 struct imap_socket sock;
121 int bytes;
122 int offset;
123 char buf[1024];
124 };
125
126 struct imap_cmd;
127
128 struct imap {
129 int uidnext; /* from SELECT responses */
130 unsigned caps, rcaps; /* CAPABILITY results */
131 /* command queue */
132 int nexttag, num_in_progress, literal_pending;
133 struct imap_cmd *in_progress, **in_progress_append;
134 struct imap_buffer buf; /* this is BIG, so put it last */
135 };
136
137 struct imap_store {
138 /* currently open mailbox */
139 const char *name; /* foreign! maybe preset? */
140 int uidvalidity;
141 struct imap *imap;
142 const char *prefix;
143 };
144
145 struct imap_cmd_cb {
146 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
147 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
148 void *ctx;
149 char *data;
150 int dlen;
151 int uid;
152 };
153
154 struct imap_cmd {
155 struct imap_cmd *next;
156 struct imap_cmd_cb cb;
157 char *cmd;
158 int tag;
159 };
160
161 #define CAP(cap) (imap->caps & (1 << (cap)))
162
163 enum CAPABILITY {
164 NOLOGIN = 0,
165 UIDPLUS,
166 LITERALPLUS,
167 NAMESPACE,
168 STARTTLS,
169 AUTH_CRAM_MD5
170 };
171
172 static const char *cap_list[] = {
173 "LOGINDISABLED",
174 "UIDPLUS",
175 "LITERAL+",
176 "NAMESPACE",
177 "STARTTLS",
178 "AUTH=CRAM-MD5",
179 };
180
181 #define RESP_OK 0
182 #define RESP_NO 1
183 #define RESP_BAD 2
184
185 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
186
187
188 #ifndef NO_OPENSSL
189 static void ssl_socket_perror(const char *func)
190 {
191 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
192 }
193 #endif
194
195 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
196 {
197 #ifndef NO_OPENSSL
198 if (sock->ssl) {
199 int sslerr = SSL_get_error(sock->ssl, ret);
200 switch (sslerr) {
201 case SSL_ERROR_NONE:
202 break;
203 case SSL_ERROR_SYSCALL:
204 perror("SSL_connect");
205 break;
206 default:
207 ssl_socket_perror("SSL_connect");
208 break;
209 }
210 } else
211 #endif
212 {
213 if (ret < 0)
214 perror(func);
215 else
216 fprintf(stderr, "%s: unexpected EOF\n", func);
217 }
218 }
219
220 #ifdef NO_OPENSSL
221 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
222 {
223 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
224 return -1;
225 }
226
227 #else
228
229 static int host_matches(const char *host, const char *pattern)
230 {
231 if (pattern[0] == '*' && pattern[1] == '.') {
232 pattern += 2;
233 if (!(host = strchr(host, '.')))
234 return 0;
235 host++;
236 }
237
238 return *host && *pattern && !strcasecmp(host, pattern);
239 }
240
241 static int verify_hostname(X509 *cert, const char *hostname)
242 {
243 int len;
244 X509_NAME *subj;
245 char cname[1000];
246 int i, found;
247 STACK_OF(GENERAL_NAME) *subj_alt_names;
248
249 /* try the DNS subjectAltNames */
250 found = 0;
251 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
252 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
253 for (i = 0; !found && i < num_subj_alt_names; i++) {
254 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
255 if (subj_alt_name->type == GEN_DNS &&
256 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
257 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
258 found = 1;
259 }
260 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
261 }
262 if (found)
263 return 0;
264
265 /* try the common name */
266 if (!(subj = X509_get_subject_name(cert)))
267 return error("cannot get certificate subject");
268 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
269 return error("cannot get certificate common name");
270 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
271 return 0;
272 return error("certificate owner '%s' does not match hostname '%s'",
273 cname, hostname);
274 }
275
276 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
277 {
278 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
279 const SSL_METHOD *meth;
280 #else
281 SSL_METHOD *meth;
282 #endif
283 SSL_CTX *ctx;
284 int ret;
285 X509 *cert;
286
287 SSL_library_init();
288 SSL_load_error_strings();
289
290 if (use_tls_only)
291 meth = TLSv1_method();
292 else
293 meth = SSLv23_method();
294
295 if (!meth) {
296 ssl_socket_perror("SSLv23_method");
297 return -1;
298 }
299
300 ctx = SSL_CTX_new(meth);
301
302 if (verify)
303 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
304
305 if (!SSL_CTX_set_default_verify_paths(ctx)) {
306 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
307 return -1;
308 }
309 sock->ssl = SSL_new(ctx);
310 if (!sock->ssl) {
311 ssl_socket_perror("SSL_new");
312 return -1;
313 }
314 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
315 ssl_socket_perror("SSL_set_rfd");
316 return -1;
317 }
318 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
319 ssl_socket_perror("SSL_set_wfd");
320 return -1;
321 }
322
323 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
324 /*
325 * SNI (RFC4366)
326 * OpenSSL does not document this function, but the implementation
327 * returns 1 on success, 0 on failure after calling SSLerr().
328 */
329 ret = SSL_set_tlsext_host_name(sock->ssl, server.host);
330 if (ret != 1)
331 warning("SSL_set_tlsext_host_name(%s) failed.", server.host);
332 #endif
333
334 ret = SSL_connect(sock->ssl);
335 if (ret <= 0) {
336 socket_perror("SSL_connect", sock, ret);
337 return -1;
338 }
339
340 if (verify) {
341 /* make sure the hostname matches that of the certificate */
342 cert = SSL_get_peer_certificate(sock->ssl);
343 if (!cert)
344 return error("unable to get peer certificate.");
345 if (verify_hostname(cert, server.host) < 0)
346 return -1;
347 }
348
349 return 0;
350 }
351 #endif
352
353 static int socket_read(struct imap_socket *sock, char *buf, int len)
354 {
355 ssize_t n;
356 #ifndef NO_OPENSSL
357 if (sock->ssl)
358 n = SSL_read(sock->ssl, buf, len);
359 else
360 #endif
361 n = xread(sock->fd[0], buf, len);
362 if (n <= 0) {
363 socket_perror("read", sock, n);
364 close(sock->fd[0]);
365 close(sock->fd[1]);
366 sock->fd[0] = sock->fd[1] = -1;
367 }
368 return n;
369 }
370
371 static int socket_write(struct imap_socket *sock, const char *buf, int len)
372 {
373 int n;
374 #ifndef NO_OPENSSL
375 if (sock->ssl)
376 n = SSL_write(sock->ssl, buf, len);
377 else
378 #endif
379 n = write_in_full(sock->fd[1], buf, len);
380 if (n != len) {
381 socket_perror("write", sock, n);
382 close(sock->fd[0]);
383 close(sock->fd[1]);
384 sock->fd[0] = sock->fd[1] = -1;
385 }
386 return n;
387 }
388
389 static void socket_shutdown(struct imap_socket *sock)
390 {
391 #ifndef NO_OPENSSL
392 if (sock->ssl) {
393 SSL_shutdown(sock->ssl);
394 SSL_free(sock->ssl);
395 }
396 #endif
397 close(sock->fd[0]);
398 close(sock->fd[1]);
399 }
400
401 /* simple line buffering */
402 static int buffer_gets(struct imap_buffer *b, char **s)
403 {
404 int n;
405 int start = b->offset;
406
407 *s = b->buf + start;
408
409 for (;;) {
410 /* make sure we have enough data to read the \r\n sequence */
411 if (b->offset + 1 >= b->bytes) {
412 if (start) {
413 /* shift down used bytes */
414 *s = b->buf;
415
416 assert(start <= b->bytes);
417 n = b->bytes - start;
418
419 if (n)
420 memmove(b->buf, b->buf + start, n);
421 b->offset -= start;
422 b->bytes = n;
423 start = 0;
424 }
425
426 n = socket_read(&b->sock, b->buf + b->bytes,
427 sizeof(b->buf) - b->bytes);
428
429 if (n <= 0)
430 return -1;
431
432 b->bytes += n;
433 }
434
435 if (b->buf[b->offset] == '\r') {
436 assert(b->offset + 1 < b->bytes);
437 if (b->buf[b->offset + 1] == '\n') {
438 b->buf[b->offset] = 0; /* terminate the string */
439 b->offset += 2; /* next line */
440 if (0 < verbosity)
441 puts(*s);
442 return 0;
443 }
444 }
445
446 b->offset++;
447 }
448 /* not reached */
449 }
450
451 static void imap_info(const char *msg, ...)
452 {
453 va_list va;
454
455 if (0 <= verbosity) {
456 va_start(va, msg);
457 vprintf(msg, va);
458 va_end(va);
459 fflush(stdout);
460 }
461 }
462
463 static void imap_warn(const char *msg, ...)
464 {
465 va_list va;
466
467 if (-2 < verbosity) {
468 va_start(va, msg);
469 vfprintf(stderr, msg, va);
470 va_end(va);
471 }
472 }
473
474 static char *next_arg(char **s)
475 {
476 char *ret;
477
478 if (!s || !*s)
479 return NULL;
480 while (isspace((unsigned char) **s))
481 (*s)++;
482 if (!**s) {
483 *s = NULL;
484 return NULL;
485 }
486 if (**s == '"') {
487 ++*s;
488 ret = *s;
489 *s = strchr(*s, '"');
490 } else {
491 ret = *s;
492 while (**s && !isspace((unsigned char) **s))
493 (*s)++;
494 }
495 if (*s) {
496 if (**s)
497 *(*s)++ = 0;
498 if (!**s)
499 *s = NULL;
500 }
501 return ret;
502 }
503
504 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
505 {
506 int ret;
507 va_list va;
508
509 va_start(va, fmt);
510 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
511 die("Fatal: buffer too small. Please report a bug.");
512 va_end(va);
513 return ret;
514 }
515
516 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
517 struct imap_cmd_cb *cb,
518 const char *fmt, va_list ap)
519 {
520 struct imap *imap = ctx->imap;
521 struct imap_cmd *cmd;
522 int n, bufl;
523 char buf[1024];
524
525 cmd = xmalloc(sizeof(struct imap_cmd));
526 nfvasprintf(&cmd->cmd, fmt, ap);
527 cmd->tag = ++imap->nexttag;
528
529 if (cb)
530 cmd->cb = *cb;
531 else
532 memset(&cmd->cb, 0, sizeof(cmd->cb));
533
534 while (imap->literal_pending)
535 get_cmd_result(ctx, NULL);
536
537 if (!cmd->cb.data)
538 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
539 else
540 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
541 cmd->tag, cmd->cmd, cmd->cb.dlen,
542 CAP(LITERALPLUS) ? "+" : "");
543
544 if (0 < verbosity) {
545 if (imap->num_in_progress)
546 printf("(%d in progress) ", imap->num_in_progress);
547 if (!starts_with(cmd->cmd, "LOGIN"))
548 printf(">>> %s", buf);
549 else
550 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
551 }
552 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
553 free(cmd->cmd);
554 free(cmd);
555 if (cb)
556 free(cb->data);
557 return NULL;
558 }
559 if (cmd->cb.data) {
560 if (CAP(LITERALPLUS)) {
561 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
562 free(cmd->cb.data);
563 if (n != cmd->cb.dlen ||
564 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
565 free(cmd->cmd);
566 free(cmd);
567 return NULL;
568 }
569 cmd->cb.data = NULL;
570 } else
571 imap->literal_pending = 1;
572 } else if (cmd->cb.cont)
573 imap->literal_pending = 1;
574 cmd->next = NULL;
575 *imap->in_progress_append = cmd;
576 imap->in_progress_append = &cmd->next;
577 imap->num_in_progress++;
578 return cmd;
579 }
580
581 __attribute__((format (printf, 3, 4)))
582 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
583 const char *fmt, ...)
584 {
585 va_list ap;
586 struct imap_cmd *cmdp;
587
588 va_start(ap, fmt);
589 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
590 va_end(ap);
591 if (!cmdp)
592 return RESP_BAD;
593
594 return get_cmd_result(ctx, cmdp);
595 }
596
597 __attribute__((format (printf, 3, 4)))
598 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
599 const char *fmt, ...)
600 {
601 va_list ap;
602 struct imap_cmd *cmdp;
603
604 va_start(ap, fmt);
605 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
606 va_end(ap);
607 if (!cmdp)
608 return DRV_STORE_BAD;
609
610 switch (get_cmd_result(ctx, cmdp)) {
611 case RESP_BAD: return DRV_STORE_BAD;
612 case RESP_NO: return DRV_MSG_BAD;
613 default: return DRV_OK;
614 }
615 }
616
617 static int skip_imap_list_l(char **sp, int level)
618 {
619 char *s = *sp;
620
621 for (;;) {
622 while (isspace((unsigned char)*s))
623 s++;
624 if (level && *s == ')') {
625 s++;
626 break;
627 }
628 if (*s == '(') {
629 /* sublist */
630 s++;
631 if (skip_imap_list_l(&s, level + 1))
632 goto bail;
633 } else if (*s == '"') {
634 /* quoted string */
635 s++;
636 for (; *s != '"'; s++)
637 if (!*s)
638 goto bail;
639 s++;
640 } else {
641 /* atom */
642 for (; *s && !isspace((unsigned char)*s); s++)
643 if (level && *s == ')')
644 break;
645 }
646
647 if (!level)
648 break;
649 if (!*s)
650 goto bail;
651 }
652 *sp = s;
653 return 0;
654
655 bail:
656 return -1;
657 }
658
659 static void skip_list(char **sp)
660 {
661 skip_imap_list_l(sp, 0);
662 }
663
664 static void parse_capability(struct imap *imap, char *cmd)
665 {
666 char *arg;
667 unsigned i;
668
669 imap->caps = 0x80000000;
670 while ((arg = next_arg(&cmd)))
671 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
672 if (!strcmp(cap_list[i], arg))
673 imap->caps |= 1 << i;
674 imap->rcaps = imap->caps;
675 }
676
677 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
678 char *s)
679 {
680 struct imap *imap = ctx->imap;
681 char *arg, *p;
682
683 if (*s != '[')
684 return RESP_OK; /* no response code */
685 s++;
686 if (!(p = strchr(s, ']'))) {
687 fprintf(stderr, "IMAP error: malformed response code\n");
688 return RESP_BAD;
689 }
690 *p++ = 0;
691 arg = next_arg(&s);
692 if (!strcmp("UIDVALIDITY", arg)) {
693 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
694 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
695 return RESP_BAD;
696 }
697 } else if (!strcmp("UIDNEXT", arg)) {
698 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
699 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
700 return RESP_BAD;
701 }
702 } else if (!strcmp("CAPABILITY", arg)) {
703 parse_capability(imap, s);
704 } else if (!strcmp("ALERT", arg)) {
705 /* RFC2060 says that these messages MUST be displayed
706 * to the user
707 */
708 for (; isspace((unsigned char)*p); p++);
709 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
710 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
711 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
712 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
713 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
714 return RESP_BAD;
715 }
716 }
717 return RESP_OK;
718 }
719
720 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
721 {
722 struct imap *imap = ctx->imap;
723 struct imap_cmd *cmdp, **pcmdp;
724 char *cmd, *arg, *arg1;
725 int n, resp, resp2, tag;
726
727 for (;;) {
728 if (buffer_gets(&imap->buf, &cmd))
729 return RESP_BAD;
730
731 arg = next_arg(&cmd);
732 if (*arg == '*') {
733 arg = next_arg(&cmd);
734 if (!arg) {
735 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
736 return RESP_BAD;
737 }
738
739 if (!strcmp("NAMESPACE", arg)) {
740 /* rfc2342 NAMESPACE response. */
741 skip_list(&cmd); /* Personal mailboxes */
742 skip_list(&cmd); /* Others' mailboxes */
743 skip_list(&cmd); /* Shared mailboxes */
744 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
745 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
746 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
747 return resp;
748 } else if (!strcmp("CAPABILITY", arg)) {
749 parse_capability(imap, cmd);
750 } else if ((arg1 = next_arg(&cmd))) {
751 ; /*
752 * Unhandled response-data with at least two words.
753 * Ignore it.
754 *
755 * NEEDSWORK: Previously this case handled '<num> EXISTS'
756 * and '<num> RECENT' but as a probably-unintended side
757 * effect it ignores other unrecognized two-word
758 * responses. imap-send doesn't ever try to read
759 * messages or mailboxes these days, so consider
760 * eliminating this case.
761 */
762 } else {
763 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
764 return RESP_BAD;
765 }
766 } else if (!imap->in_progress) {
767 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
768 return RESP_BAD;
769 } else if (*arg == '+') {
770 /* This can happen only with the last command underway, as
771 it enforces a round-trip. */
772 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
773 offsetof(struct imap_cmd, next));
774 if (cmdp->cb.data) {
775 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
776 free(cmdp->cb.data);
777 cmdp->cb.data = NULL;
778 if (n != (int)cmdp->cb.dlen)
779 return RESP_BAD;
780 } else if (cmdp->cb.cont) {
781 if (cmdp->cb.cont(ctx, cmdp, cmd))
782 return RESP_BAD;
783 } else {
784 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
785 return RESP_BAD;
786 }
787 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
788 return RESP_BAD;
789 if (!cmdp->cb.cont)
790 imap->literal_pending = 0;
791 if (!tcmd)
792 return DRV_OK;
793 } else {
794 tag = atoi(arg);
795 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
796 if (cmdp->tag == tag)
797 goto gottag;
798 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
799 return RESP_BAD;
800 gottag:
801 if (!(*pcmdp = cmdp->next))
802 imap->in_progress_append = pcmdp;
803 imap->num_in_progress--;
804 if (cmdp->cb.cont || cmdp->cb.data)
805 imap->literal_pending = 0;
806 arg = next_arg(&cmd);
807 if (!strcmp("OK", arg))
808 resp = DRV_OK;
809 else {
810 if (!strcmp("NO", arg))
811 resp = RESP_NO;
812 else /*if (!strcmp("BAD", arg))*/
813 resp = RESP_BAD;
814 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
815 !starts_with(cmdp->cmd, "LOGIN") ?
816 cmdp->cmd : "LOGIN <user> <pass>",
817 arg, cmd ? cmd : "");
818 }
819 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
820 resp = resp2;
821 if (cmdp->cb.done)
822 cmdp->cb.done(ctx, cmdp, resp);
823 free(cmdp->cb.data);
824 free(cmdp->cmd);
825 free(cmdp);
826 if (!tcmd || tcmd == cmdp)
827 return resp;
828 }
829 }
830 /* not reached */
831 }
832
833 static void imap_close_server(struct imap_store *ictx)
834 {
835 struct imap *imap = ictx->imap;
836
837 if (imap->buf.sock.fd[0] != -1) {
838 imap_exec(ictx, NULL, "LOGOUT");
839 socket_shutdown(&imap->buf.sock);
840 }
841 free(imap);
842 }
843
844 static void imap_close_store(struct imap_store *ctx)
845 {
846 imap_close_server(ctx);
847 free(ctx);
848 }
849
850 #ifndef NO_OPENSSL
851
852 /*
853 * hexchar() and cram() functions are based on the code from the isync
854 * project (http://isync.sf.net/).
855 */
856 static char hexchar(unsigned int b)
857 {
858 return b < 10 ? '0' + b : 'a' + (b - 10);
859 }
860
861 #define ENCODED_SIZE(n) (4*((n+2)/3))
862 static char *cram(const char *challenge_64, const char *user, const char *pass)
863 {
864 int i, resp_len, encoded_len, decoded_len;
865 HMAC_CTX hmac;
866 unsigned char hash[16];
867 char hex[33];
868 char *response, *response_64, *challenge;
869
870 /*
871 * length of challenge_64 (i.e. base-64 encoded string) is a good
872 * enough upper bound for challenge (decoded result).
873 */
874 encoded_len = strlen(challenge_64);
875 challenge = xmalloc(encoded_len);
876 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
877 (unsigned char *)challenge_64, encoded_len);
878 if (decoded_len < 0)
879 die("invalid challenge %s", challenge_64);
880 HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5());
881 HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len);
882 HMAC_Final(&hmac, hash, NULL);
883 HMAC_CTX_cleanup(&hmac);
884
885 hex[32] = 0;
886 for (i = 0; i < 16; i++) {
887 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
888 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
889 }
890
891 /* response: "<user> <digest in hex>" */
892 response = xstrfmt("%s %s", user, hex);
893 resp_len = strlen(response) + 1;
894
895 response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
896 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
897 (unsigned char *)response, resp_len);
898 if (encoded_len < 0)
899 die("EVP_EncodeBlock error");
900 response_64[encoded_len] = '\0';
901 return (char *)response_64;
902 }
903
904 #else
905
906 static char *cram(const char *challenge_64, const char *user, const char *pass)
907 {
908 die("If you want to use CRAM-MD5 authenticate method, "
909 "you have to build git-imap-send with OpenSSL library.");
910 }
911
912 #endif
913
914 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
915 {
916 int ret;
917 char *response;
918
919 response = cram(prompt, server.user, server.pass);
920
921 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
922 if (ret != strlen(response))
923 return error("IMAP error: sending response failed");
924
925 free(response);
926
927 return 0;
928 }
929
930 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
931 {
932 struct credential cred = CREDENTIAL_INIT;
933 struct imap_store *ctx;
934 struct imap *imap;
935 char *arg, *rsp;
936 int s = -1, preauth;
937
938 ctx = xcalloc(1, sizeof(*ctx));
939
940 ctx->imap = imap = xcalloc(1, sizeof(*imap));
941 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
942 imap->in_progress_append = &imap->in_progress;
943
944 /* open connection to IMAP server */
945
946 if (srvc->tunnel) {
947 struct child_process tunnel = CHILD_PROCESS_INIT;
948
949 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
950
951 argv_array_push(&tunnel.args, srvc->tunnel);
952 tunnel.use_shell = 1;
953 tunnel.in = -1;
954 tunnel.out = -1;
955 if (start_command(&tunnel))
956 die("cannot start proxy %s", srvc->tunnel);
957
958 imap->buf.sock.fd[0] = tunnel.out;
959 imap->buf.sock.fd[1] = tunnel.in;
960
961 imap_info("ok\n");
962 } else {
963 #ifndef NO_IPV6
964 struct addrinfo hints, *ai0, *ai;
965 int gai;
966 char portstr[6];
967
968 snprintf(portstr, sizeof(portstr), "%d", srvc->port);
969
970 memset(&hints, 0, sizeof(hints));
971 hints.ai_socktype = SOCK_STREAM;
972 hints.ai_protocol = IPPROTO_TCP;
973
974 imap_info("Resolving %s... ", srvc->host);
975 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
976 if (gai) {
977 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
978 goto bail;
979 }
980 imap_info("ok\n");
981
982 for (ai0 = ai; ai; ai = ai->ai_next) {
983 char addr[NI_MAXHOST];
984
985 s = socket(ai->ai_family, ai->ai_socktype,
986 ai->ai_protocol);
987 if (s < 0)
988 continue;
989
990 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
991 sizeof(addr), NULL, 0, NI_NUMERICHOST);
992 imap_info("Connecting to [%s]:%s... ", addr, portstr);
993
994 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
995 close(s);
996 s = -1;
997 perror("connect");
998 continue;
999 }
1000
1001 break;
1002 }
1003 freeaddrinfo(ai0);
1004 #else /* NO_IPV6 */
1005 struct hostent *he;
1006 struct sockaddr_in addr;
1007
1008 memset(&addr, 0, sizeof(addr));
1009 addr.sin_port = htons(srvc->port);
1010 addr.sin_family = AF_INET;
1011
1012 imap_info("Resolving %s... ", srvc->host);
1013 he = gethostbyname(srvc->host);
1014 if (!he) {
1015 perror("gethostbyname");
1016 goto bail;
1017 }
1018 imap_info("ok\n");
1019
1020 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1021
1022 s = socket(PF_INET, SOCK_STREAM, 0);
1023
1024 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1025 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1026 close(s);
1027 s = -1;
1028 perror("connect");
1029 }
1030 #endif
1031 if (s < 0) {
1032 fputs("Error: unable to connect to server.\n", stderr);
1033 goto bail;
1034 }
1035
1036 imap->buf.sock.fd[0] = s;
1037 imap->buf.sock.fd[1] = dup(s);
1038
1039 if (srvc->use_ssl &&
1040 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1041 close(s);
1042 goto bail;
1043 }
1044 imap_info("ok\n");
1045 }
1046
1047 /* read the greeting string */
1048 if (buffer_gets(&imap->buf, &rsp)) {
1049 fprintf(stderr, "IMAP error: no greeting response\n");
1050 goto bail;
1051 }
1052 arg = next_arg(&rsp);
1053 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1054 fprintf(stderr, "IMAP error: invalid greeting response\n");
1055 goto bail;
1056 }
1057 preauth = 0;
1058 if (!strcmp("PREAUTH", arg))
1059 preauth = 1;
1060 else if (strcmp("OK", arg) != 0) {
1061 fprintf(stderr, "IMAP error: unknown greeting response\n");
1062 goto bail;
1063 }
1064 parse_response_code(ctx, NULL, rsp);
1065 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1066 goto bail;
1067
1068 if (!preauth) {
1069 #ifndef NO_OPENSSL
1070 if (!srvc->use_ssl && CAP(STARTTLS)) {
1071 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1072 goto bail;
1073 if (ssl_socket_connect(&imap->buf.sock, 1,
1074 srvc->ssl_verify))
1075 goto bail;
1076 /* capabilities may have changed, so get the new capabilities */
1077 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1078 goto bail;
1079 }
1080 #endif
1081 imap_info("Logging in...\n");
1082 if (!srvc->user || !srvc->pass) {
1083 cred.protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
1084 cred.host = xstrdup(srvc->host);
1085
1086 if (srvc->user)
1087 cred.username = xstrdup(srvc->user);
1088 if (srvc->pass)
1089 cred.password = xstrdup(srvc->pass);
1090
1091 credential_fill(&cred);
1092
1093 if (!srvc->user)
1094 srvc->user = xstrdup(cred.username);
1095 if (!srvc->pass)
1096 srvc->pass = xstrdup(cred.password);
1097 }
1098
1099 if (CAP(NOLOGIN)) {
1100 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1101 goto bail;
1102 }
1103
1104 if (srvc->auth_method) {
1105 struct imap_cmd_cb cb;
1106
1107 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1108 if (!CAP(AUTH_CRAM_MD5)) {
1109 fprintf(stderr, "You specified"
1110 "CRAM-MD5 as authentication method, "
1111 "but %s doesn't support it.\n", srvc->host);
1112 goto bail;
1113 }
1114 /* CRAM-MD5 */
1115
1116 memset(&cb, 0, sizeof(cb));
1117 cb.cont = auth_cram_md5;
1118 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1119 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1120 goto bail;
1121 }
1122 } else {
1123 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1124 goto bail;
1125 }
1126 } else {
1127 if (!imap->buf.sock.ssl)
1128 imap_warn("*** IMAP Warning *** Password is being "
1129 "sent in the clear\n");
1130 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1131 fprintf(stderr, "IMAP error: LOGIN failed\n");
1132 goto bail;
1133 }
1134 }
1135 } /* !preauth */
1136
1137 if (cred.username)
1138 credential_approve(&cred);
1139 credential_clear(&cred);
1140
1141 /* check the target mailbox exists */
1142 ctx->name = folder;
1143 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1144 case RESP_OK:
1145 /* ok */
1146 break;
1147 case RESP_BAD:
1148 fprintf(stderr, "IMAP error: could not check mailbox\n");
1149 goto out;
1150 case RESP_NO:
1151 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1152 imap_info("Created missing mailbox\n");
1153 } else {
1154 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1155 goto out;
1156 }
1157 break;
1158 }
1159
1160 ctx->prefix = "";
1161 return ctx;
1162
1163 bail:
1164 if (cred.username)
1165 credential_reject(&cred);
1166 credential_clear(&cred);
1167
1168 out:
1169 imap_close_store(ctx);
1170 return NULL;
1171 }
1172
1173 /*
1174 * Insert CR characters as necessary in *msg to ensure that every LF
1175 * character in *msg is preceded by a CR.
1176 */
1177 static void lf_to_crlf(struct strbuf *msg)
1178 {
1179 char *new;
1180 size_t i, j;
1181 char lastc;
1182
1183 /* First pass: tally, in j, the size of the new string: */
1184 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1185 if (msg->buf[i] == '\n' && lastc != '\r')
1186 j++; /* a CR will need to be added here */
1187 lastc = msg->buf[i];
1188 j++;
1189 }
1190
1191 new = xmalloc(j + 1);
1192
1193 /*
1194 * Second pass: write the new string. Note that this loop is
1195 * otherwise identical to the first pass.
1196 */
1197 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1198 if (msg->buf[i] == '\n' && lastc != '\r')
1199 new[j++] = '\r';
1200 lastc = new[j++] = msg->buf[i];
1201 }
1202 strbuf_attach(msg, new, j, j + 1);
1203 }
1204
1205 /*
1206 * Store msg to IMAP. Also detach and free the data from msg->data,
1207 * leaving msg->data empty.
1208 */
1209 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1210 {
1211 struct imap *imap = ctx->imap;
1212 struct imap_cmd_cb cb;
1213 const char *prefix, *box;
1214 int ret;
1215
1216 lf_to_crlf(msg);
1217 memset(&cb, 0, sizeof(cb));
1218
1219 cb.dlen = msg->len;
1220 cb.data = strbuf_detach(msg, NULL);
1221
1222 box = ctx->name;
1223 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1224 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1225 imap->caps = imap->rcaps;
1226 if (ret != DRV_OK)
1227 return ret;
1228
1229 return DRV_OK;
1230 }
1231
1232 static void wrap_in_html(struct strbuf *msg)
1233 {
1234 struct strbuf buf = STRBUF_INIT;
1235 static char *content_type = "Content-Type: text/html;\n";
1236 static char *pre_open = "<pre>\n";
1237 static char *pre_close = "</pre>\n";
1238 const char *body = strstr(msg->buf, "\n\n");
1239
1240 if (!body)
1241 return; /* Headers but no body; no wrapping needed */
1242
1243 body += 2;
1244
1245 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1246 strbuf_addstr(&buf, content_type);
1247 strbuf_addch(&buf, '\n');
1248 strbuf_addstr(&buf, pre_open);
1249 strbuf_addstr_xml_quoted(&buf, body);
1250 strbuf_addstr(&buf, pre_close);
1251
1252 strbuf_release(msg);
1253 *msg = buf;
1254 }
1255
1256 #define CHUNKSIZE 0x1000
1257
1258 static int read_message(FILE *f, struct strbuf *all_msgs)
1259 {
1260 do {
1261 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1262 break;
1263 } while (!feof(f));
1264
1265 return ferror(f) ? -1 : 0;
1266 }
1267
1268 static int count_messages(struct strbuf *all_msgs)
1269 {
1270 int count = 0;
1271 char *p = all_msgs->buf;
1272
1273 while (1) {
1274 if (starts_with(p, "From ")) {
1275 p = strstr(p+5, "\nFrom: ");
1276 if (!p) break;
1277 p = strstr(p+7, "\nDate: ");
1278 if (!p) break;
1279 p = strstr(p+7, "\nSubject: ");
1280 if (!p) break;
1281 p += 10;
1282 count++;
1283 }
1284 p = strstr(p+5, "\nFrom ");
1285 if (!p)
1286 break;
1287 p++;
1288 }
1289 return count;
1290 }
1291
1292 /*
1293 * Copy the next message from all_msgs, starting at offset *ofs, to
1294 * msg. Update *ofs to the start of the following message. Return
1295 * true iff a message was successfully copied.
1296 */
1297 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1298 {
1299 char *p, *data;
1300 size_t len;
1301
1302 if (*ofs >= all_msgs->len)
1303 return 0;
1304
1305 data = &all_msgs->buf[*ofs];
1306 len = all_msgs->len - *ofs;
1307
1308 if (len < 5 || !starts_with(data, "From "))
1309 return 0;
1310
1311 p = strchr(data, '\n');
1312 if (p) {
1313 p++;
1314 len -= p - data;
1315 *ofs += p - data;
1316 data = p;
1317 }
1318
1319 p = strstr(data, "\nFrom ");
1320 if (p)
1321 len = &p[1] - data;
1322
1323 strbuf_add(msg, data, len);
1324 *ofs += len;
1325 return 1;
1326 }
1327
1328 static void git_imap_config(void)
1329 {
1330 const char *val = NULL;
1331
1332 git_config_get_bool("imap.sslverify", &server.ssl_verify);
1333 git_config_get_bool("imap.preformattedhtml", &server.use_html);
1334 git_config_get_string("imap.folder", &server.folder);
1335
1336 if (!git_config_get_value("imap.host", &val)) {
1337 if (!val) {
1338 git_die_config("imap.host", "Missing value for 'imap.host'");
1339 } else {
1340 if (starts_with(val, "imap:"))
1341 val += 5;
1342 else if (starts_with(val, "imaps:")) {
1343 val += 6;
1344 server.use_ssl = 1;
1345 }
1346 if (starts_with(val, "//"))
1347 val += 2;
1348 server.host = xstrdup(val);
1349 }
1350 }
1351
1352 git_config_get_string("imap.user", &server.user);
1353 git_config_get_string("imap.pass", &server.pass);
1354 git_config_get_int("imap.port", &server.port);
1355 git_config_get_string("imap.tunnel", &server.tunnel);
1356 git_config_get_string("imap.authmethod", &server.auth_method);
1357 }
1358
1359 static int append_msgs_to_imap(struct imap_server_conf *server,
1360 struct strbuf* all_msgs, int total)
1361 {
1362 struct strbuf msg = STRBUF_INIT;
1363 struct imap_store *ctx = NULL;
1364 int ofs = 0;
1365 int r;
1366 int n = 0;
1367
1368 ctx = imap_open_store(server, server->folder);
1369 if (!ctx) {
1370 fprintf(stderr, "failed to open store\n");
1371 return 1;
1372 }
1373 ctx->name = server->folder;
1374
1375 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1376 while (1) {
1377 unsigned percent = n * 100 / total;
1378
1379 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1380
1381 if (!split_msg(all_msgs, &msg, &ofs))
1382 break;
1383 if (server->use_html)
1384 wrap_in_html(&msg);
1385 r = imap_store_msg(ctx, &msg);
1386 if (r != DRV_OK)
1387 break;
1388 n++;
1389 }
1390 fprintf(stderr, "\n");
1391
1392 imap_close_store(ctx);
1393
1394 return 0;
1395 }
1396
1397 #ifdef USE_CURL_FOR_IMAP_SEND
1398 static CURL *setup_curl(struct imap_server_conf *srvc)
1399 {
1400 CURL *curl;
1401 struct strbuf path = STRBUF_INIT;
1402
1403 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1404 die("curl_global_init failed");
1405
1406 curl = curl_easy_init();
1407
1408 if (!curl)
1409 die("curl_easy_init failed");
1410
1411 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1412 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1413
1414 strbuf_addstr(&path, server.host);
1415 if (!path.len || path.buf[path.len - 1] != '/')
1416 strbuf_addch(&path, '/');
1417 strbuf_addstr(&path, server.folder);
1418
1419 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1420 strbuf_release(&path);
1421 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1422
1423 if (server.auth_method) {
1424 #if LIBCURL_VERSION_NUM < 0x072200
1425 warning("No LOGIN_OPTIONS support in this cURL version");
1426 #else
1427 struct strbuf auth = STRBUF_INIT;
1428 strbuf_addstr(&auth, "AUTH=");
1429 strbuf_addstr(&auth, server.auth_method);
1430 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1431 strbuf_release(&auth);
1432 #endif
1433 }
1434
1435 if (!server.use_ssl)
1436 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1437
1438 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1439 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1440
1441 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1442
1443 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1444
1445 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1446 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1447
1448 return curl;
1449 }
1450
1451 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1452 struct strbuf* all_msgs, int total) {
1453 int ofs = 0;
1454 int n = 0;
1455 struct buffer msgbuf = { STRBUF_INIT, 0 };
1456 CURL *curl;
1457 CURLcode res = CURLE_OK;
1458
1459 curl = setup_curl(server);
1460 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1461
1462 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1463 while (1) {
1464 unsigned percent = n * 100 / total;
1465 int prev_len;
1466
1467 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1468
1469 prev_len = msgbuf.buf.len;
1470 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1471 break;
1472 if (server->use_html)
1473 wrap_in_html(&msgbuf.buf);
1474 lf_to_crlf(&msgbuf.buf);
1475
1476 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1477 (curl_off_t)(msgbuf.buf.len-prev_len));
1478
1479 res = curl_easy_perform(curl);
1480
1481 if(res != CURLE_OK) {
1482 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1483 curl_easy_strerror(res));
1484 break;
1485 }
1486
1487 n++;
1488 }
1489 fprintf(stderr, "\n");
1490
1491 curl_easy_cleanup(curl);
1492 curl_global_cleanup();
1493
1494 return 0;
1495 }
1496 #endif
1497
1498 int main(int argc, char **argv)
1499 {
1500 struct strbuf all_msgs = STRBUF_INIT;
1501 int total;
1502 int nongit_ok;
1503
1504 git_extract_argv0_path(argv[0]);
1505
1506 git_setup_gettext();
1507
1508 setup_git_directory_gently(&nongit_ok);
1509 git_imap_config();
1510
1511 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1512
1513 if (argc)
1514 usage_with_options(imap_send_usage, imap_send_options);
1515
1516 #ifndef USE_CURL_FOR_IMAP_SEND
1517 if (use_curl) {
1518 warning("--curl not supported in this build");
1519 use_curl = 0;
1520 }
1521 #elif defined(NO_OPENSSL)
1522 if (!use_curl) {
1523 warning("--no-curl not supported in this build");
1524 use_curl = 1;
1525 }
1526 #endif
1527
1528 if (!server.port)
1529 server.port = server.use_ssl ? 993 : 143;
1530
1531 if (!server.folder) {
1532 fprintf(stderr, "no imap store specified\n");
1533 return 1;
1534 }
1535 if (!server.host) {
1536 if (!server.tunnel) {
1537 fprintf(stderr, "no imap host specified\n");
1538 return 1;
1539 }
1540 server.host = "tunnel";
1541 }
1542
1543 /* read the messages */
1544 if (read_message(stdin, &all_msgs)) {
1545 fprintf(stderr, "error reading input\n");
1546 return 1;
1547 }
1548
1549 if (all_msgs.len == 0) {
1550 fprintf(stderr, "nothing to send\n");
1551 return 1;
1552 }
1553
1554 total = count_messages(&all_msgs);
1555 if (!total) {
1556 fprintf(stderr, "no messages to send\n");
1557 return 1;
1558 }
1559
1560 /* write it to the imap server */
1561
1562 if (server.tunnel)
1563 return append_msgs_to_imap(&server, &all_msgs, total);
1564
1565 #ifdef USE_CURL_FOR_IMAP_SEND
1566 if (use_curl)
1567 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1568 #endif
1569
1570 return append_msgs_to_imap(&server, &all_msgs, total);
1571 }
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