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files_ref_store::submodule: use NULL for the main repository
[git/debian.git] / imap-send.c
blob5c7e27a89459a9a63018cc469262c82891c6f7b7
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 meth = SSLv23_method();
291 if (!meth) {
292 ssl_socket_perror("SSLv23_method");
293 return -1;
294 }
295
296 ctx = SSL_CTX_new(meth);
297 if (!ctx) {
298 ssl_socket_perror("SSL_CTX_new");
299 return -1;
300 }
301
302 if (use_tls_only)
303 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
304
305 if (verify)
306 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
307
308 if (!SSL_CTX_set_default_verify_paths(ctx)) {
309 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
310 return -1;
311 }
312 sock->ssl = SSL_new(ctx);
313 if (!sock->ssl) {
314 ssl_socket_perror("SSL_new");
315 return -1;
316 }
317 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
318 ssl_socket_perror("SSL_set_rfd");
319 return -1;
320 }
321 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
322 ssl_socket_perror("SSL_set_wfd");
323 return -1;
324 }
325
326 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
327 /*
328 * SNI (RFC4366)
329 * OpenSSL does not document this function, but the implementation
330 * returns 1 on success, 0 on failure after calling SSLerr().
331 */
332 ret = SSL_set_tlsext_host_name(sock->ssl, server.host);
333 if (ret != 1)
334 warning("SSL_set_tlsext_host_name(%s) failed.", server.host);
335 #endif
336
337 ret = SSL_connect(sock->ssl);
338 if (ret <= 0) {
339 socket_perror("SSL_connect", sock, ret);
340 return -1;
341 }
342
343 if (verify) {
344 /* make sure the hostname matches that of the certificate */
345 cert = SSL_get_peer_certificate(sock->ssl);
346 if (!cert)
347 return error("unable to get peer certificate.");
348 if (verify_hostname(cert, server.host) < 0)
349 return -1;
350 }
351
352 return 0;
353 }
354 #endif
355
356 static int socket_read(struct imap_socket *sock, char *buf, int len)
357 {
358 ssize_t n;
359 #ifndef NO_OPENSSL
360 if (sock->ssl)
361 n = SSL_read(sock->ssl, buf, len);
362 else
363 #endif
364 n = xread(sock->fd[0], buf, len);
365 if (n <= 0) {
366 socket_perror("read", sock, n);
367 close(sock->fd[0]);
368 close(sock->fd[1]);
369 sock->fd[0] = sock->fd[1] = -1;
370 }
371 return n;
372 }
373
374 static int socket_write(struct imap_socket *sock, const char *buf, int len)
375 {
376 int n;
377 #ifndef NO_OPENSSL
378 if (sock->ssl)
379 n = SSL_write(sock->ssl, buf, len);
380 else
381 #endif
382 n = write_in_full(sock->fd[1], buf, len);
383 if (n != len) {
384 socket_perror("write", sock, n);
385 close(sock->fd[0]);
386 close(sock->fd[1]);
387 sock->fd[0] = sock->fd[1] = -1;
388 }
389 return n;
390 }
391
392 static void socket_shutdown(struct imap_socket *sock)
393 {
394 #ifndef NO_OPENSSL
395 if (sock->ssl) {
396 SSL_shutdown(sock->ssl);
397 SSL_free(sock->ssl);
398 }
399 #endif
400 close(sock->fd[0]);
401 close(sock->fd[1]);
402 }
403
404 /* simple line buffering */
405 static int buffer_gets(struct imap_buffer *b, char **s)
406 {
407 int n;
408 int start = b->offset;
409
410 *s = b->buf + start;
411
412 for (;;) {
413 /* make sure we have enough data to read the \r\n sequence */
414 if (b->offset + 1 >= b->bytes) {
415 if (start) {
416 /* shift down used bytes */
417 *s = b->buf;
418
419 assert(start <= b->bytes);
420 n = b->bytes - start;
421
422 if (n)
423 memmove(b->buf, b->buf + start, n);
424 b->offset -= start;
425 b->bytes = n;
426 start = 0;
427 }
428
429 n = socket_read(&b->sock, b->buf + b->bytes,
430 sizeof(b->buf) - b->bytes);
431
432 if (n <= 0)
433 return -1;
434
435 b->bytes += n;
436 }
437
438 if (b->buf[b->offset] == '\r') {
439 assert(b->offset + 1 < b->bytes);
440 if (b->buf[b->offset + 1] == '\n') {
441 b->buf[b->offset] = 0; /* terminate the string */
442 b->offset += 2; /* next line */
443 if (0 < verbosity)
444 puts(*s);
445 return 0;
446 }
447 }
448
449 b->offset++;
450 }
451 /* not reached */
452 }
453
454 static void imap_info(const char *msg, ...)
455 {
456 va_list va;
457
458 if (0 <= verbosity) {
459 va_start(va, msg);
460 vprintf(msg, va);
461 va_end(va);
462 fflush(stdout);
463 }
464 }
465
466 static void imap_warn(const char *msg, ...)
467 {
468 va_list va;
469
470 if (-2 < verbosity) {
471 va_start(va, msg);
472 vfprintf(stderr, msg, va);
473 va_end(va);
474 }
475 }
476
477 static char *next_arg(char **s)
478 {
479 char *ret;
480
481 if (!s || !*s)
482 return NULL;
483 while (isspace((unsigned char) **s))
484 (*s)++;
485 if (!**s) {
486 *s = NULL;
487 return NULL;
488 }
489 if (**s == '"') {
490 ++*s;
491 ret = *s;
492 *s = strchr(*s, '"');
493 } else {
494 ret = *s;
495 while (**s && !isspace((unsigned char) **s))
496 (*s)++;
497 }
498 if (*s) {
499 if (**s)
500 *(*s)++ = 0;
501 if (!**s)
502 *s = NULL;
503 }
504 return ret;
505 }
506
507 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
508 {
509 int ret;
510 va_list va;
511
512 va_start(va, fmt);
513 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
514 die("BUG: buffer too small. Please report a bug.");
515 va_end(va);
516 return ret;
517 }
518
519 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
520 struct imap_cmd_cb *cb,
521 const char *fmt, va_list ap)
522 {
523 struct imap *imap = ctx->imap;
524 struct imap_cmd *cmd;
525 int n, bufl;
526 char buf[1024];
527
528 cmd = xmalloc(sizeof(struct imap_cmd));
529 nfvasprintf(&cmd->cmd, fmt, ap);
530 cmd->tag = ++imap->nexttag;
531
532 if (cb)
533 cmd->cb = *cb;
534 else
535 memset(&cmd->cb, 0, sizeof(cmd->cb));
536
537 while (imap->literal_pending)
538 get_cmd_result(ctx, NULL);
539
540 if (!cmd->cb.data)
541 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
542 else
543 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
544 cmd->tag, cmd->cmd, cmd->cb.dlen,
545 CAP(LITERALPLUS) ? "+" : "");
546
547 if (0 < verbosity) {
548 if (imap->num_in_progress)
549 printf("(%d in progress) ", imap->num_in_progress);
550 if (!starts_with(cmd->cmd, "LOGIN"))
551 printf(">>> %s", buf);
552 else
553 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
554 }
555 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
556 free(cmd->cmd);
557 free(cmd);
558 if (cb)
559 free(cb->data);
560 return NULL;
561 }
562 if (cmd->cb.data) {
563 if (CAP(LITERALPLUS)) {
564 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
565 free(cmd->cb.data);
566 if (n != cmd->cb.dlen ||
567 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
568 free(cmd->cmd);
569 free(cmd);
570 return NULL;
571 }
572 cmd->cb.data = NULL;
573 } else
574 imap->literal_pending = 1;
575 } else if (cmd->cb.cont)
576 imap->literal_pending = 1;
577 cmd->next = NULL;
578 *imap->in_progress_append = cmd;
579 imap->in_progress_append = &cmd->next;
580 imap->num_in_progress++;
581 return cmd;
582 }
583
584 __attribute__((format (printf, 3, 4)))
585 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
586 const char *fmt, ...)
587 {
588 va_list ap;
589 struct imap_cmd *cmdp;
590
591 va_start(ap, fmt);
592 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
593 va_end(ap);
594 if (!cmdp)
595 return RESP_BAD;
596
597 return get_cmd_result(ctx, cmdp);
598 }
599
600 __attribute__((format (printf, 3, 4)))
601 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
602 const char *fmt, ...)
603 {
604 va_list ap;
605 struct imap_cmd *cmdp;
606
607 va_start(ap, fmt);
608 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
609 va_end(ap);
610 if (!cmdp)
611 return DRV_STORE_BAD;
612
613 switch (get_cmd_result(ctx, cmdp)) {
614 case RESP_BAD: return DRV_STORE_BAD;
615 case RESP_NO: return DRV_MSG_BAD;
616 default: return DRV_OK;
617 }
618 }
619
620 static int skip_imap_list_l(char **sp, int level)
621 {
622 char *s = *sp;
623
624 for (;;) {
625 while (isspace((unsigned char)*s))
626 s++;
627 if (level && *s == ')') {
628 s++;
629 break;
630 }
631 if (*s == '(') {
632 /* sublist */
633 s++;
634 if (skip_imap_list_l(&s, level + 1))
635 goto bail;
636 } else if (*s == '"') {
637 /* quoted string */
638 s++;
639 for (; *s != '"'; s++)
640 if (!*s)
641 goto bail;
642 s++;
643 } else {
644 /* atom */
645 for (; *s && !isspace((unsigned char)*s); s++)
646 if (level && *s == ')')
647 break;
648 }
649
650 if (!level)
651 break;
652 if (!*s)
653 goto bail;
654 }
655 *sp = s;
656 return 0;
657
658 bail:
659 return -1;
660 }
661
662 static void skip_list(char **sp)
663 {
664 skip_imap_list_l(sp, 0);
665 }
666
667 static void parse_capability(struct imap *imap, char *cmd)
668 {
669 char *arg;
670 unsigned i;
671
672 imap->caps = 0x80000000;
673 while ((arg = next_arg(&cmd)))
674 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
675 if (!strcmp(cap_list[i], arg))
676 imap->caps |= 1 << i;
677 imap->rcaps = imap->caps;
678 }
679
680 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
681 char *s)
682 {
683 struct imap *imap = ctx->imap;
684 char *arg, *p;
685
686 if (*s != '[')
687 return RESP_OK; /* no response code */
688 s++;
689 if (!(p = strchr(s, ']'))) {
690 fprintf(stderr, "IMAP error: malformed response code\n");
691 return RESP_BAD;
692 }
693 *p++ = 0;
694 arg = next_arg(&s);
695 if (!strcmp("UIDVALIDITY", arg)) {
696 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
697 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
698 return RESP_BAD;
699 }
700 } else if (!strcmp("UIDNEXT", arg)) {
701 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
702 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
703 return RESP_BAD;
704 }
705 } else if (!strcmp("CAPABILITY", arg)) {
706 parse_capability(imap, s);
707 } else if (!strcmp("ALERT", arg)) {
708 /* RFC2060 says that these messages MUST be displayed
709 * to the user
710 */
711 for (; isspace((unsigned char)*p); p++);
712 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
713 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
714 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
715 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
716 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
717 return RESP_BAD;
718 }
719 }
720 return RESP_OK;
721 }
722
723 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
724 {
725 struct imap *imap = ctx->imap;
726 struct imap_cmd *cmdp, **pcmdp;
727 char *cmd, *arg, *arg1;
728 int n, resp, resp2, tag;
729
730 for (;;) {
731 if (buffer_gets(&imap->buf, &cmd))
732 return RESP_BAD;
733
734 arg = next_arg(&cmd);
735 if (*arg == '*') {
736 arg = next_arg(&cmd);
737 if (!arg) {
738 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
739 return RESP_BAD;
740 }
741
742 if (!strcmp("NAMESPACE", arg)) {
743 /* rfc2342 NAMESPACE response. */
744 skip_list(&cmd); /* Personal mailboxes */
745 skip_list(&cmd); /* Others' mailboxes */
746 skip_list(&cmd); /* Shared mailboxes */
747 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
748 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
749 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
750 return resp;
751 } else if (!strcmp("CAPABILITY", arg)) {
752 parse_capability(imap, cmd);
753 } else if ((arg1 = next_arg(&cmd))) {
754 ; /*
755 * Unhandled response-data with at least two words.
756 * Ignore it.
757 *
758 * NEEDSWORK: Previously this case handled '<num> EXISTS'
759 * and '<num> RECENT' but as a probably-unintended side
760 * effect it ignores other unrecognized two-word
761 * responses. imap-send doesn't ever try to read
762 * messages or mailboxes these days, so consider
763 * eliminating this case.
764 */
765 } else {
766 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
767 return RESP_BAD;
768 }
769 } else if (!imap->in_progress) {
770 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
771 return RESP_BAD;
772 } else if (*arg == '+') {
773 /* This can happen only with the last command underway, as
774 it enforces a round-trip. */
775 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
776 offsetof(struct imap_cmd, next));
777 if (cmdp->cb.data) {
778 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
779 free(cmdp->cb.data);
780 cmdp->cb.data = NULL;
781 if (n != (int)cmdp->cb.dlen)
782 return RESP_BAD;
783 } else if (cmdp->cb.cont) {
784 if (cmdp->cb.cont(ctx, cmdp, cmd))
785 return RESP_BAD;
786 } else {
787 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
788 return RESP_BAD;
789 }
790 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
791 return RESP_BAD;
792 if (!cmdp->cb.cont)
793 imap->literal_pending = 0;
794 if (!tcmd)
795 return DRV_OK;
796 } else {
797 tag = atoi(arg);
798 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
799 if (cmdp->tag == tag)
800 goto gottag;
801 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
802 return RESP_BAD;
803 gottag:
804 if (!(*pcmdp = cmdp->next))
805 imap->in_progress_append = pcmdp;
806 imap->num_in_progress--;
807 if (cmdp->cb.cont || cmdp->cb.data)
808 imap->literal_pending = 0;
809 arg = next_arg(&cmd);
810 if (!strcmp("OK", arg))
811 resp = DRV_OK;
812 else {
813 if (!strcmp("NO", arg))
814 resp = RESP_NO;
815 else /*if (!strcmp("BAD", arg))*/
816 resp = RESP_BAD;
817 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
818 !starts_with(cmdp->cmd, "LOGIN") ?
819 cmdp->cmd : "LOGIN <user> <pass>",
820 arg, cmd ? cmd : "");
821 }
822 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
823 resp = resp2;
824 if (cmdp->cb.done)
825 cmdp->cb.done(ctx, cmdp, resp);
826 free(cmdp->cb.data);
827 free(cmdp->cmd);
828 free(cmdp);
829 if (!tcmd || tcmd == cmdp)
830 return resp;
831 }
832 }
833 /* not reached */
834 }
835
836 static void imap_close_server(struct imap_store *ictx)
837 {
838 struct imap *imap = ictx->imap;
839
840 if (imap->buf.sock.fd[0] != -1) {
841 imap_exec(ictx, NULL, "LOGOUT");
842 socket_shutdown(&imap->buf.sock);
843 }
844 free(imap);
845 }
846
847 static void imap_close_store(struct imap_store *ctx)
848 {
849 imap_close_server(ctx);
850 free(ctx);
851 }
852
853 #ifndef NO_OPENSSL
854
855 /*
856 * hexchar() and cram() functions are based on the code from the isync
857 * project (http://isync.sf.net/).
858 */
859 static char hexchar(unsigned int b)
860 {
861 return b < 10 ? '0' + b : 'a' + (b - 10);
862 }
863
864 #define ENCODED_SIZE(n) (4*((n+2)/3))
865 static char *cram(const char *challenge_64, const char *user, const char *pass)
866 {
867 int i, resp_len, encoded_len, decoded_len;
868 unsigned char hash[16];
869 char hex[33];
870 char *response, *response_64, *challenge;
871
872 /*
873 * length of challenge_64 (i.e. base-64 encoded string) is a good
874 * enough upper bound for challenge (decoded result).
875 */
876 encoded_len = strlen(challenge_64);
877 challenge = xmalloc(encoded_len);
878 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
879 (unsigned char *)challenge_64, encoded_len);
880 if (decoded_len < 0)
881 die("invalid challenge %s", challenge_64);
882 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
883 die("HMAC error");
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);
894
895 response_64 = xmallocz(ENCODED_SIZE(resp_len));
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 return (char *)response_64;
901 }
902
903 #else
904
905 static char *cram(const char *challenge_64, const char *user, const char *pass)
906 {
907 die("If you want to use CRAM-MD5 authenticate method, "
908 "you have to build git-imap-send with OpenSSL library.");
909 }
910
911 #endif
912
913 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
914 {
915 int ret;
916 char *response;
917
918 response = cram(prompt, server.user, server.pass);
919
920 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
921 if (ret != strlen(response))
922 return error("IMAP error: sending response failed");
923
924 free(response);
925
926 return 0;
927 }
928
929 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
930 {
931 struct credential cred = CREDENTIAL_INIT;
932 struct imap_store *ctx;
933 struct imap *imap;
934 char *arg, *rsp;
935 int s = -1, preauth;
936
937 ctx = xcalloc(1, sizeof(*ctx));
938
939 ctx->imap = imap = xcalloc(1, sizeof(*imap));
940 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
941 imap->in_progress_append = &imap->in_progress;
942
943 /* open connection to IMAP server */
944
945 if (srvc->tunnel) {
946 struct child_process tunnel = CHILD_PROCESS_INIT;
947
948 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
949
950 argv_array_push(&tunnel.args, srvc->tunnel);
951 tunnel.use_shell = 1;
952 tunnel.in = -1;
953 tunnel.out = -1;
954 if (start_command(&tunnel))
955 die("cannot start proxy %s", srvc->tunnel);
956
957 imap->buf.sock.fd[0] = tunnel.out;
958 imap->buf.sock.fd[1] = tunnel.in;
959
960 imap_info("ok\n");
961 } else {
962 #ifndef NO_IPV6
963 struct addrinfo hints, *ai0, *ai;
964 int gai;
965 char portstr[6];
966
967 snprintf(portstr, sizeof(portstr), "%d", srvc->port);
968
969 memset(&hints, 0, sizeof(hints));
970 hints.ai_socktype = SOCK_STREAM;
971 hints.ai_protocol = IPPROTO_TCP;
972
973 imap_info("Resolving %s... ", srvc->host);
974 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
975 if (gai) {
976 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
977 goto bail;
978 }
979 imap_info("ok\n");
980
981 for (ai0 = ai; ai; ai = ai->ai_next) {
982 char addr[NI_MAXHOST];
983
984 s = socket(ai->ai_family, ai->ai_socktype,
985 ai->ai_protocol);
986 if (s < 0)
987 continue;
988
989 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
990 sizeof(addr), NULL, 0, NI_NUMERICHOST);
991 imap_info("Connecting to [%s]:%s... ", addr, portstr);
992
993 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
994 close(s);
995 s = -1;
996 perror("connect");
997 continue;
998 }
999
1000 break;
1001 }
1002 freeaddrinfo(ai0);
1003 #else /* NO_IPV6 */
1004 struct hostent *he;
1005 struct sockaddr_in addr;
1006
1007 memset(&addr, 0, sizeof(addr));
1008 addr.sin_port = htons(srvc->port);
1009 addr.sin_family = AF_INET;
1010
1011 imap_info("Resolving %s... ", srvc->host);
1012 he = gethostbyname(srvc->host);
1013 if (!he) {
1014 perror("gethostbyname");
1015 goto bail;
1016 }
1017 imap_info("ok\n");
1018
1019 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1020
1021 s = socket(PF_INET, SOCK_STREAM, 0);
1022
1023 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1024 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1025 close(s);
1026 s = -1;
1027 perror("connect");
1028 }
1029 #endif
1030 if (s < 0) {
1031 fputs("Error: unable to connect to server.\n", stderr);
1032 goto bail;
1033 }
1034
1035 imap->buf.sock.fd[0] = s;
1036 imap->buf.sock.fd[1] = dup(s);
1037
1038 if (srvc->use_ssl &&
1039 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1040 close(s);
1041 goto bail;
1042 }
1043 imap_info("ok\n");
1044 }
1045
1046 /* read the greeting string */
1047 if (buffer_gets(&imap->buf, &rsp)) {
1048 fprintf(stderr, "IMAP error: no greeting response\n");
1049 goto bail;
1050 }
1051 arg = next_arg(&rsp);
1052 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1053 fprintf(stderr, "IMAP error: invalid greeting response\n");
1054 goto bail;
1055 }
1056 preauth = 0;
1057 if (!strcmp("PREAUTH", arg))
1058 preauth = 1;
1059 else if (strcmp("OK", arg) != 0) {
1060 fprintf(stderr, "IMAP error: unknown greeting response\n");
1061 goto bail;
1062 }
1063 parse_response_code(ctx, NULL, rsp);
1064 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1065 goto bail;
1066
1067 if (!preauth) {
1068 #ifndef NO_OPENSSL
1069 if (!srvc->use_ssl && CAP(STARTTLS)) {
1070 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1071 goto bail;
1072 if (ssl_socket_connect(&imap->buf.sock, 1,
1073 srvc->ssl_verify))
1074 goto bail;
1075 /* capabilities may have changed, so get the new capabilities */
1076 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1077 goto bail;
1078 }
1079 #endif
1080 imap_info("Logging in...\n");
1081 if (!srvc->user || !srvc->pass) {
1082 cred.protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
1083 cred.host = xstrdup(srvc->host);
1084
1085 cred.username = xstrdup_or_null(srvc->user);
1086 cred.password = xstrdup_or_null(srvc->pass);
1087
1088 credential_fill(&cred);
1089
1090 if (!srvc->user)
1091 srvc->user = xstrdup(cred.username);
1092 if (!srvc->pass)
1093 srvc->pass = xstrdup(cred.password);
1094 }
1095
1096 if (srvc->auth_method) {
1097 struct imap_cmd_cb cb;
1098
1099 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1100 if (!CAP(AUTH_CRAM_MD5)) {
1101 fprintf(stderr, "You specified"
1102 "CRAM-MD5 as authentication method, "
1103 "but %s doesn't support it.\n", srvc->host);
1104 goto bail;
1105 }
1106 /* CRAM-MD5 */
1107
1108 memset(&cb, 0, sizeof(cb));
1109 cb.cont = auth_cram_md5;
1110 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1111 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1112 goto bail;
1113 }
1114 } else {
1115 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1116 goto bail;
1117 }
1118 } else {
1119 if (CAP(NOLOGIN)) {
1120 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1121 srvc->user, srvc->host);
1122 goto bail;
1123 }
1124 if (!imap->buf.sock.ssl)
1125 imap_warn("*** IMAP Warning *** Password is being "
1126 "sent in the clear\n");
1127 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1128 fprintf(stderr, "IMAP error: LOGIN failed\n");
1129 goto bail;
1130 }
1131 }
1132 } /* !preauth */
1133
1134 if (cred.username)
1135 credential_approve(&cred);
1136 credential_clear(&cred);
1137
1138 /* check the target mailbox exists */
1139 ctx->name = folder;
1140 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1141 case RESP_OK:
1142 /* ok */
1143 break;
1144 case RESP_BAD:
1145 fprintf(stderr, "IMAP error: could not check mailbox\n");
1146 goto out;
1147 case RESP_NO:
1148 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1149 imap_info("Created missing mailbox\n");
1150 } else {
1151 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1152 goto out;
1153 }
1154 break;
1155 }
1156
1157 ctx->prefix = "";
1158 return ctx;
1159
1160 bail:
1161 if (cred.username)
1162 credential_reject(&cred);
1163 credential_clear(&cred);
1164
1165 out:
1166 imap_close_store(ctx);
1167 return NULL;
1168 }
1169
1170 /*
1171 * Insert CR characters as necessary in *msg to ensure that every LF
1172 * character in *msg is preceded by a CR.
1173 */
1174 static void lf_to_crlf(struct strbuf *msg)
1175 {
1176 char *new;
1177 size_t i, j;
1178 char lastc;
1179
1180 /* First pass: tally, in j, the size of the new string: */
1181 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1182 if (msg->buf[i] == '\n' && lastc != '\r')
1183 j++; /* a CR will need to be added here */
1184 lastc = msg->buf[i];
1185 j++;
1186 }
1187
1188 new = xmallocz(j);
1189
1190 /*
1191 * Second pass: write the new string. Note that this loop is
1192 * otherwise identical to the first pass.
1193 */
1194 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1195 if (msg->buf[i] == '\n' && lastc != '\r')
1196 new[j++] = '\r';
1197 lastc = new[j++] = msg->buf[i];
1198 }
1199 strbuf_attach(msg, new, j, j + 1);
1200 }
1201
1202 /*
1203 * Store msg to IMAP. Also detach and free the data from msg->data,
1204 * leaving msg->data empty.
1205 */
1206 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1207 {
1208 struct imap *imap = ctx->imap;
1209 struct imap_cmd_cb cb;
1210 const char *prefix, *box;
1211 int ret;
1212
1213 lf_to_crlf(msg);
1214 memset(&cb, 0, sizeof(cb));
1215
1216 cb.dlen = msg->len;
1217 cb.data = strbuf_detach(msg, NULL);
1218
1219 box = ctx->name;
1220 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1221 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1222 imap->caps = imap->rcaps;
1223 if (ret != DRV_OK)
1224 return ret;
1225
1226 return DRV_OK;
1227 }
1228
1229 static void wrap_in_html(struct strbuf *msg)
1230 {
1231 struct strbuf buf = STRBUF_INIT;
1232 static char *content_type = "Content-Type: text/html;\n";
1233 static char *pre_open = "<pre>\n";
1234 static char *pre_close = "</pre>\n";
1235 const char *body = strstr(msg->buf, "\n\n");
1236
1237 if (!body)
1238 return; /* Headers but no body; no wrapping needed */
1239
1240 body += 2;
1241
1242 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1243 strbuf_addstr(&buf, content_type);
1244 strbuf_addch(&buf, '\n');
1245 strbuf_addstr(&buf, pre_open);
1246 strbuf_addstr_xml_quoted(&buf, body);
1247 strbuf_addstr(&buf, pre_close);
1248
1249 strbuf_release(msg);
1250 *msg = buf;
1251 }
1252
1253 #define CHUNKSIZE 0x1000
1254
1255 static int read_message(FILE *f, struct strbuf *all_msgs)
1256 {
1257 do {
1258 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1259 break;
1260 } while (!feof(f));
1261
1262 return ferror(f) ? -1 : 0;
1263 }
1264
1265 static int count_messages(struct strbuf *all_msgs)
1266 {
1267 int count = 0;
1268 char *p = all_msgs->buf;
1269
1270 while (1) {
1271 if (starts_with(p, "From ")) {
1272 p = strstr(p+5, "\nFrom: ");
1273 if (!p) break;
1274 p = strstr(p+7, "\nDate: ");
1275 if (!p) break;
1276 p = strstr(p+7, "\nSubject: ");
1277 if (!p) break;
1278 p += 10;
1279 count++;
1280 }
1281 p = strstr(p+5, "\nFrom ");
1282 if (!p)
1283 break;
1284 p++;
1285 }
1286 return count;
1287 }
1288
1289 /*
1290 * Copy the next message from all_msgs, starting at offset *ofs, to
1291 * msg. Update *ofs to the start of the following message. Return
1292 * true iff a message was successfully copied.
1293 */
1294 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1295 {
1296 char *p, *data;
1297 size_t len;
1298
1299 if (*ofs >= all_msgs->len)
1300 return 0;
1301
1302 data = &all_msgs->buf[*ofs];
1303 len = all_msgs->len - *ofs;
1304
1305 if (len < 5 || !starts_with(data, "From "))
1306 return 0;
1307
1308 p = strchr(data, '\n');
1309 if (p) {
1310 p++;
1311 len -= p - data;
1312 *ofs += p - data;
1313 data = p;
1314 }
1315
1316 p = strstr(data, "\nFrom ");
1317 if (p)
1318 len = &p[1] - data;
1319
1320 strbuf_add(msg, data, len);
1321 *ofs += len;
1322 return 1;
1323 }
1324
1325 static void git_imap_config(void)
1326 {
1327 const char *val = NULL;
1328
1329 git_config_get_bool("imap.sslverify", &server.ssl_verify);
1330 git_config_get_bool("imap.preformattedhtml", &server.use_html);
1331 git_config_get_string("imap.folder", &server.folder);
1332
1333 if (!git_config_get_value("imap.host", &val)) {
1334 if (!val) {
1335 git_die_config("imap.host", "Missing value for 'imap.host'");
1336 } else {
1337 if (starts_with(val, "imap:"))
1338 val += 5;
1339 else if (starts_with(val, "imaps:")) {
1340 val += 6;
1341 server.use_ssl = 1;
1342 }
1343 if (starts_with(val, "//"))
1344 val += 2;
1345 server.host = xstrdup(val);
1346 }
1347 }
1348
1349 git_config_get_string("imap.user", &server.user);
1350 git_config_get_string("imap.pass", &server.pass);
1351 git_config_get_int("imap.port", &server.port);
1352 git_config_get_string("imap.tunnel", &server.tunnel);
1353 git_config_get_string("imap.authmethod", &server.auth_method);
1354 }
1355
1356 static int append_msgs_to_imap(struct imap_server_conf *server,
1357 struct strbuf* all_msgs, int total)
1358 {
1359 struct strbuf msg = STRBUF_INIT;
1360 struct imap_store *ctx = NULL;
1361 int ofs = 0;
1362 int r;
1363 int n = 0;
1364
1365 ctx = imap_open_store(server, server->folder);
1366 if (!ctx) {
1367 fprintf(stderr, "failed to open store\n");
1368 return 1;
1369 }
1370 ctx->name = server->folder;
1371
1372 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1373 while (1) {
1374 unsigned percent = n * 100 / total;
1375
1376 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1377
1378 if (!split_msg(all_msgs, &msg, &ofs))
1379 break;
1380 if (server->use_html)
1381 wrap_in_html(&msg);
1382 r = imap_store_msg(ctx, &msg);
1383 if (r != DRV_OK)
1384 break;
1385 n++;
1386 }
1387 fprintf(stderr, "\n");
1388
1389 imap_close_store(ctx);
1390
1391 return 0;
1392 }
1393
1394 #ifdef USE_CURL_FOR_IMAP_SEND
1395 static CURL *setup_curl(struct imap_server_conf *srvc)
1396 {
1397 CURL *curl;
1398 struct strbuf path = STRBUF_INIT;
1399
1400 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1401 die("curl_global_init failed");
1402
1403 curl = curl_easy_init();
1404
1405 if (!curl)
1406 die("curl_easy_init failed");
1407
1408 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1409 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1410
1411 strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
1412 strbuf_addstr(&path, server.host);
1413 if (!path.len || path.buf[path.len - 1] != '/')
1414 strbuf_addch(&path, '/');
1415 strbuf_addstr(&path, server.folder);
1416
1417 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1418 strbuf_release(&path);
1419 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1420
1421 if (server.auth_method) {
1422 #if LIBCURL_VERSION_NUM < 0x072200
1423 warning("No LOGIN_OPTIONS support in this cURL version");
1424 #else
1425 struct strbuf auth = STRBUF_INIT;
1426 strbuf_addstr(&auth, "AUTH=");
1427 strbuf_addstr(&auth, server.auth_method);
1428 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1429 strbuf_release(&auth);
1430 #endif
1431 }
1432
1433 if (!server.use_ssl)
1434 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1435
1436 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1437 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1438
1439 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1440
1441 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1442
1443 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1444 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1445 setup_curl_trace(curl);
1446
1447 return curl;
1448 }
1449
1450 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1451 struct strbuf* all_msgs, int total) {
1452 int ofs = 0;
1453 int n = 0;
1454 struct buffer msgbuf = { STRBUF_INIT, 0 };
1455 CURL *curl;
1456 CURLcode res = CURLE_OK;
1457
1458 curl = setup_curl(server);
1459 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1460
1461 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1462 while (1) {
1463 unsigned percent = n * 100 / total;
1464 int prev_len;
1465
1466 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1467
1468 prev_len = msgbuf.buf.len;
1469 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1470 break;
1471 if (server->use_html)
1472 wrap_in_html(&msgbuf.buf);
1473 lf_to_crlf(&msgbuf.buf);
1474
1475 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1476 (curl_off_t)(msgbuf.buf.len-prev_len));
1477
1478 res = curl_easy_perform(curl);
1479
1480 if(res != CURLE_OK) {
1481 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1482 curl_easy_strerror(res));
1483 break;
1484 }
1485
1486 n++;
1487 }
1488 fprintf(stderr, "\n");
1489
1490 curl_easy_cleanup(curl);
1491 curl_global_cleanup();
1492
1493 return 0;
1494 }
1495 #endif
1496
1497 int cmd_main(int argc, const char **argv)
1498 {
1499 struct strbuf all_msgs = STRBUF_INIT;
1500 int total;
1501 int nongit_ok;
1502
1503 setup_git_directory_gently(&nongit_ok);
1504 git_imap_config();
1505
1506 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1507
1508 if (argc)
1509 usage_with_options(imap_send_usage, imap_send_options);
1510
1511 #ifndef USE_CURL_FOR_IMAP_SEND
1512 if (use_curl) {
1513 warning("--curl not supported in this build");
1514 use_curl = 0;
1515 }
1516 #elif defined(NO_OPENSSL)
1517 if (!use_curl) {
1518 warning("--no-curl not supported in this build");
1519 use_curl = 1;
1520 }
1521 #endif
1522
1523 if (!server.port)
1524 server.port = server.use_ssl ? 993 : 143;
1525
1526 if (!server.folder) {
1527 fprintf(stderr, "no imap store specified\n");
1528 return 1;
1529 }
1530 if (!server.host) {
1531 if (!server.tunnel) {
1532 fprintf(stderr, "no imap host specified\n");
1533 return 1;
1534 }
1535 server.host = "tunnel";
1536 }
1537
1538 /* read the messages */
1539 if (read_message(stdin, &all_msgs)) {
1540 fprintf(stderr, "error reading input\n");
1541 return 1;
1542 }
1543
1544 if (all_msgs.len == 0) {
1545 fprintf(stderr, "nothing to send\n");
1546 return 1;
1547 }
1548
1549 total = count_messages(&all_msgs);
1550 if (!total) {
1551 fprintf(stderr, "no messages to send\n");
1552 return 1;
1553 }
1554
1555 /* write it to the imap server */
1556
1557 if (server.tunnel)
1558 return append_msgs_to_imap(&server, &all_msgs, total);
1559
1560 #ifdef USE_CURL_FOR_IMAP_SEND
1561 if (use_curl)
1562 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1563 #endif
1564
1565 return append_msgs_to_imap(&server, &all_msgs, total);
1566 }
git for Debian