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refs: remove `delete_refs` callback from backends
[alt-git.git] / imap-send.c
blob996651e4f80abd5fa2daf570f9d981934d328aeb
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, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "git-compat-util.h"
25 #include "config.h"
26 #include "credential.h"
27 #include "exec-cmd.h"
28 #include "gettext.h"
29 #include "run-command.h"
30 #include "parse-options.h"
31 #include "setup.h"
32 #include "strbuf.h"
33 #if defined(NO_OPENSSL) && !defined(HAVE_OPENSSL_CSPRNG)
34 typedef void *SSL;
35 #endif
36 #ifdef USE_CURL_FOR_IMAP_SEND
37 #include "http.h"
38 #endif
39
40 #if defined(USE_CURL_FOR_IMAP_SEND)
41 /* Always default to curl if it's available. */
42 #define USE_CURL_DEFAULT 1
43 #else
44 /* We don't have curl, so continue to use the historical implementation */
45 #define USE_CURL_DEFAULT 0
46 #endif
47
48 static int verbosity;
49 static int use_curl = USE_CURL_DEFAULT;
50
51 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
52
53 static struct option imap_send_options[] = {
54 OPT__VERBOSITY(&verbosity),
55 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
56 OPT_END()
57 };
58
59 #undef DRV_OK
60 #define DRV_OK 0
61 #define DRV_MSG_BAD -1
62 #define DRV_BOX_BAD -2
63 #define DRV_STORE_BAD -3
64
65 __attribute__((format (printf, 1, 2)))
66 static void imap_info(const char *, ...);
67 __attribute__((format (printf, 1, 2)))
68 static void imap_warn(const char *, ...);
69
70 static char *next_arg(char **);
71
72 __attribute__((format (printf, 3, 4)))
73 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
74
75 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
76 {
77 int len;
78 char tmp[8192];
79
80 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
81 if (len < 0)
82 die("Fatal: Out of memory");
83 if (len >= sizeof(tmp))
84 die("imap command overflow!");
85 *strp = xmemdupz(tmp, len);
86 return len;
87 }
88
89 struct imap_server_conf {
90 const char *name;
91 const char *tunnel;
92 const char *host;
93 int port;
94 const char *folder;
95 const char *user;
96 const char *pass;
97 int use_ssl;
98 int ssl_verify;
99 int use_html;
100 const char *auth_method;
101 };
102
103 static struct imap_server_conf server = {
104 .ssl_verify = 1,
105 };
106
107 struct imap_socket {
108 int fd[2];
109 SSL *ssl;
110 };
111
112 struct imap_buffer {
113 struct imap_socket sock;
114 int bytes;
115 int offset;
116 char buf[1024];
117 };
118
119 struct imap_cmd;
120
121 struct imap {
122 int uidnext; /* from SELECT responses */
123 unsigned caps, rcaps; /* CAPABILITY results */
124 /* command queue */
125 int nexttag, num_in_progress, literal_pending;
126 struct imap_cmd *in_progress, **in_progress_append;
127 struct imap_buffer buf; /* this is BIG, so put it last */
128 };
129
130 struct imap_store {
131 /* currently open mailbox */
132 const char *name; /* foreign! maybe preset? */
133 int uidvalidity;
134 struct imap *imap;
135 const char *prefix;
136 };
137
138 struct imap_cmd_cb {
139 int (*cont)(struct imap_store *ctx, const char *prompt);
140 void *ctx;
141 char *data;
142 int dlen;
143 };
144
145 struct imap_cmd {
146 struct imap_cmd *next;
147 struct imap_cmd_cb cb;
148 char *cmd;
149 int tag;
150 };
151
152 #define CAP(cap) (imap->caps & (1 << (cap)))
153
154 enum CAPABILITY {
155 NOLOGIN = 0,
156 UIDPLUS,
157 LITERALPLUS,
158 NAMESPACE,
159 STARTTLS,
160 AUTH_CRAM_MD5
161 };
162
163 static const char *cap_list[] = {
164 "LOGINDISABLED",
165 "UIDPLUS",
166 "LITERAL+",
167 "NAMESPACE",
168 "STARTTLS",
169 "AUTH=CRAM-MD5",
170 };
171
172 #define RESP_OK 0
173 #define RESP_NO 1
174 #define RESP_BAD 2
175
176 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
177
178
179 #ifndef NO_OPENSSL
180 static void ssl_socket_perror(const char *func)
181 {
182 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
183 }
184 #endif
185
186 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
187 {
188 #ifndef NO_OPENSSL
189 if (sock->ssl) {
190 int sslerr = SSL_get_error(sock->ssl, ret);
191 switch (sslerr) {
192 case SSL_ERROR_NONE:
193 break;
194 case SSL_ERROR_SYSCALL:
195 perror("SSL_connect");
196 break;
197 default:
198 ssl_socket_perror("SSL_connect");
199 break;
200 }
201 } else
202 #endif
203 {
204 if (ret < 0)
205 perror(func);
206 else
207 fprintf(stderr, "%s: unexpected EOF\n", func);
208 }
209 /* mark as used to appease -Wunused-parameter with NO_OPENSSL */
210 (void)sock;
211 }
212
213 #ifdef NO_OPENSSL
214 static int ssl_socket_connect(struct imap_socket *sock UNUSED,
215 int use_tls_only UNUSED,
216 int verify UNUSED)
217 {
218 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
219 return -1;
220 }
221
222 #else
223
224 static int host_matches(const char *host, const char *pattern)
225 {
226 if (pattern[0] == '*' && pattern[1] == '.') {
227 pattern += 2;
228 if (!(host = strchr(host, '.')))
229 return 0;
230 host++;
231 }
232
233 return *host && *pattern && !strcasecmp(host, pattern);
234 }
235
236 static int verify_hostname(X509 *cert, const char *hostname)
237 {
238 int len;
239 X509_NAME *subj;
240 char cname[1000];
241 int i, found;
242 STACK_OF(GENERAL_NAME) *subj_alt_names;
243
244 /* try the DNS subjectAltNames */
245 found = 0;
246 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
247 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
248 for (i = 0; !found && i < num_subj_alt_names; i++) {
249 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
250 if (subj_alt_name->type == GEN_DNS &&
251 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
252 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
253 found = 1;
254 }
255 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
256 }
257 if (found)
258 return 0;
259
260 /* try the common name */
261 if (!(subj = X509_get_subject_name(cert)))
262 return error("cannot get certificate subject");
263 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
264 return error("cannot get certificate common name");
265 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
266 return 0;
267 return error("certificate owner '%s' does not match hostname '%s'",
268 cname, hostname);
269 }
270
271 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
272 {
273 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
274 const SSL_METHOD *meth;
275 #else
276 SSL_METHOD *meth;
277 #endif
278 SSL_CTX *ctx;
279 int ret;
280 X509 *cert;
281
282 SSL_library_init();
283 SSL_load_error_strings();
284
285 meth = SSLv23_method();
286 if (!meth) {
287 ssl_socket_perror("SSLv23_method");
288 return -1;
289 }
290
291 ctx = SSL_CTX_new(meth);
292 if (!ctx) {
293 ssl_socket_perror("SSL_CTX_new");
294 return -1;
295 }
296
297 if (use_tls_only)
298 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
299
300 if (verify)
301 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
302
303 if (!SSL_CTX_set_default_verify_paths(ctx)) {
304 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
305 return -1;
306 }
307 sock->ssl = SSL_new(ctx);
308 if (!sock->ssl) {
309 ssl_socket_perror("SSL_new");
310 return -1;
311 }
312 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
313 ssl_socket_perror("SSL_set_rfd");
314 return -1;
315 }
316 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
317 ssl_socket_perror("SSL_set_wfd");
318 return -1;
319 }
320
321 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
322 /*
323 * SNI (RFC4366)
324 * OpenSSL does not document this function, but the implementation
325 * returns 1 on success, 0 on failure after calling SSLerr().
326 */
327 ret = SSL_set_tlsext_host_name(sock->ssl, server.host);
328 if (ret != 1)
329 warning("SSL_set_tlsext_host_name(%s) failed.", server.host);
330 #endif
331
332 ret = SSL_connect(sock->ssl);
333 if (ret <= 0) {
334 socket_perror("SSL_connect", sock, ret);
335 return -1;
336 }
337
338 if (verify) {
339 /* make sure the hostname matches that of the certificate */
340 cert = SSL_get_peer_certificate(sock->ssl);
341 if (!cert)
342 return error("unable to get peer certificate.");
343 if (verify_hostname(cert, server.host) < 0)
344 return -1;
345 }
346
347 return 0;
348 }
349 #endif
350
351 static int socket_read(struct imap_socket *sock, char *buf, int len)
352 {
353 ssize_t n;
354 #ifndef NO_OPENSSL
355 if (sock->ssl)
356 n = SSL_read(sock->ssl, buf, len);
357 else
358 #endif
359 n = xread(sock->fd[0], buf, len);
360 if (n <= 0) {
361 socket_perror("read", sock, n);
362 close(sock->fd[0]);
363 close(sock->fd[1]);
364 sock->fd[0] = sock->fd[1] = -1;
365 }
366 return n;
367 }
368
369 static int socket_write(struct imap_socket *sock, const char *buf, int len)
370 {
371 int n;
372 #ifndef NO_OPENSSL
373 if (sock->ssl)
374 n = SSL_write(sock->ssl, buf, len);
375 else
376 #endif
377 n = write_in_full(sock->fd[1], buf, len);
378 if (n != len) {
379 socket_perror("write", sock, n);
380 close(sock->fd[0]);
381 close(sock->fd[1]);
382 sock->fd[0] = sock->fd[1] = -1;
383 }
384 return n;
385 }
386
387 static void socket_shutdown(struct imap_socket *sock)
388 {
389 #ifndef NO_OPENSSL
390 if (sock->ssl) {
391 SSL_shutdown(sock->ssl);
392 SSL_free(sock->ssl);
393 }
394 #endif
395 close(sock->fd[0]);
396 close(sock->fd[1]);
397 }
398
399 /* simple line buffering */
400 static int buffer_gets(struct imap_buffer *b, char **s)
401 {
402 int n;
403 int start = b->offset;
404
405 *s = b->buf + start;
406
407 for (;;) {
408 /* make sure we have enough data to read the \r\n sequence */
409 if (b->offset + 1 >= b->bytes) {
410 if (start) {
411 /* shift down used bytes */
412 *s = b->buf;
413
414 assert(start <= b->bytes);
415 n = b->bytes - start;
416
417 if (n)
418 memmove(b->buf, b->buf + start, n);
419 b->offset -= start;
420 b->bytes = n;
421 start = 0;
422 }
423
424 n = socket_read(&b->sock, b->buf + b->bytes,
425 sizeof(b->buf) - b->bytes);
426
427 if (n <= 0)
428 return -1;
429
430 b->bytes += n;
431 }
432
433 if (b->buf[b->offset] == '\r') {
434 assert(b->offset + 1 < b->bytes);
435 if (b->buf[b->offset + 1] == '\n') {
436 b->buf[b->offset] = 0; /* terminate the string */
437 b->offset += 2; /* next line */
438 if (0 < verbosity)
439 puts(*s);
440 return 0;
441 }
442 }
443
444 b->offset++;
445 }
446 /* not reached */
447 }
448
449 __attribute__((format (printf, 1, 2)))
450 static void imap_info(const char *msg, ...)
451 {
452 va_list va;
453
454 if (0 <= verbosity) {
455 va_start(va, msg);
456 vprintf(msg, va);
457 va_end(va);
458 fflush(stdout);
459 }
460 }
461
462 __attribute__((format (printf, 1, 2)))
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 __attribute__((format (printf, 3, 4)))
505 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
506 {
507 int ret;
508 va_list va;
509
510 va_start(va, fmt);
511 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
512 BUG("buffer too small. Please report a bug.");
513 va_end(va);
514 return ret;
515 }
516
517 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
518 struct imap_cmd_cb *cb,
519 const char *fmt, va_list ap)
520 {
521 struct imap *imap = ctx->imap;
522 struct imap_cmd *cmd;
523 int n, bufl;
524 char buf[1024];
525
526 cmd = xmalloc(sizeof(struct imap_cmd));
527 nfvasprintf(&cmd->cmd, fmt, ap);
528 cmd->tag = ++imap->nexttag;
529
530 if (cb)
531 cmd->cb = *cb;
532 else
533 memset(&cmd->cb, 0, sizeof(cmd->cb));
534
535 while (imap->literal_pending)
536 get_cmd_result(ctx, NULL);
537
538 if (!cmd->cb.data)
539 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
540 else
541 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
542 cmd->tag, cmd->cmd, cmd->cb.dlen,
543 CAP(LITERALPLUS) ? "+" : "");
544
545 if (0 < verbosity) {
546 if (imap->num_in_progress)
547 printf("(%d in progress) ", imap->num_in_progress);
548 if (!starts_with(cmd->cmd, "LOGIN"))
549 printf(">>> %s", buf);
550 else
551 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
552 }
553 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
554 free(cmd->cmd);
555 free(cmd);
556 if (cb)
557 free(cb->data);
558 return NULL;
559 }
560 if (cmd->cb.data) {
561 if (CAP(LITERALPLUS)) {
562 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
563 free(cmd->cb.data);
564 if (n != cmd->cb.dlen ||
565 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
566 free(cmd->cmd);
567 free(cmd);
568 return NULL;
569 }
570 cmd->cb.data = NULL;
571 } else
572 imap->literal_pending = 1;
573 } else if (cmd->cb.cont)
574 imap->literal_pending = 1;
575 cmd->next = NULL;
576 *imap->in_progress_append = cmd;
577 imap->in_progress_append = &cmd->next;
578 imap->num_in_progress++;
579 return cmd;
580 }
581
582 __attribute__((format (printf, 3, 4)))
583 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
584 const char *fmt, ...)
585 {
586 va_list ap;
587 struct imap_cmd *cmdp;
588
589 va_start(ap, fmt);
590 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
591 va_end(ap);
592 if (!cmdp)
593 return RESP_BAD;
594
595 return get_cmd_result(ctx, cmdp);
596 }
597
598 __attribute__((format (printf, 3, 4)))
599 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
600 const char *fmt, ...)
601 {
602 va_list ap;
603 struct imap_cmd *cmdp;
604
605 va_start(ap, fmt);
606 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
607 va_end(ap);
608 if (!cmdp)
609 return DRV_STORE_BAD;
610
611 switch (get_cmd_result(ctx, cmdp)) {
612 case RESP_BAD: return DRV_STORE_BAD;
613 case RESP_NO: return DRV_MSG_BAD;
614 default: return DRV_OK;
615 }
616 }
617
618 static int skip_imap_list_l(char **sp, int level)
619 {
620 char *s = *sp;
621
622 for (;;) {
623 while (isspace((unsigned char)*s))
624 s++;
625 if (level && *s == ')') {
626 s++;
627 break;
628 }
629 if (*s == '(') {
630 /* sublist */
631 s++;
632 if (skip_imap_list_l(&s, level + 1))
633 goto bail;
634 } else if (*s == '"') {
635 /* quoted string */
636 s++;
637 for (; *s != '"'; s++)
638 if (!*s)
639 goto bail;
640 s++;
641 } else {
642 /* atom */
643 for (; *s && !isspace((unsigned char)*s); s++)
644 if (level && *s == ')')
645 break;
646 }
647
648 if (!level)
649 break;
650 if (!*s)
651 goto bail;
652 }
653 *sp = s;
654 return 0;
655
656 bail:
657 return -1;
658 }
659
660 static void skip_list(char **sp)
661 {
662 skip_imap_list_l(sp, 0);
663 }
664
665 static void parse_capability(struct imap *imap, char *cmd)
666 {
667 char *arg;
668 unsigned i;
669
670 imap->caps = 0x80000000;
671 while ((arg = next_arg(&cmd)))
672 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
673 if (!strcmp(cap_list[i], arg))
674 imap->caps |= 1 << i;
675 imap->rcaps = imap->caps;
676 }
677
678 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
679 char *s)
680 {
681 struct imap *imap = ctx->imap;
682 char *arg, *p;
683
684 if (!s || *s != '[')
685 return RESP_OK; /* no response code */
686 s++;
687 if (!(p = strchr(s, ']'))) {
688 fprintf(stderr, "IMAP error: malformed response code\n");
689 return RESP_BAD;
690 }
691 *p++ = 0;
692 arg = next_arg(&s);
693 if (!arg) {
694 fprintf(stderr, "IMAP error: empty response code\n");
695 return RESP_BAD;
696 }
697 if (!strcmp("UIDVALIDITY", arg)) {
698 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
699 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
700 return RESP_BAD;
701 }
702 } else if (!strcmp("UIDNEXT", arg)) {
703 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
704 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
705 return RESP_BAD;
706 }
707 } else if (!strcmp("CAPABILITY", arg)) {
708 parse_capability(imap, s);
709 } else if (!strcmp("ALERT", arg)) {
710 /* RFC2060 says that these messages MUST be displayed
711 * to the user
712 */
713 for (; isspace((unsigned char)*p); p++);
714 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
715 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
716 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
717 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
718 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
719 return RESP_BAD;
720 }
721 }
722 return RESP_OK;
723 }
724
725 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
726 {
727 struct imap *imap = ctx->imap;
728 struct imap_cmd *cmdp, **pcmdp;
729 char *cmd;
730 const char *arg, *arg1;
731 int n, resp, resp2, tag;
732
733 for (;;) {
734 if (buffer_gets(&imap->buf, &cmd))
735 return RESP_BAD;
736
737 arg = next_arg(&cmd);
738 if (!arg) {
739 fprintf(stderr, "IMAP error: empty response\n");
740 return RESP_BAD;
741 }
742 if (*arg == '*') {
743 arg = next_arg(&cmd);
744 if (!arg) {
745 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
746 return RESP_BAD;
747 }
748
749 if (!strcmp("NAMESPACE", arg)) {
750 /* rfc2342 NAMESPACE response. */
751 skip_list(&cmd); /* Personal mailboxes */
752 skip_list(&cmd); /* Others' mailboxes */
753 skip_list(&cmd); /* Shared mailboxes */
754 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
755 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
756 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
757 return resp;
758 } else if (!strcmp("CAPABILITY", arg)) {
759 parse_capability(imap, cmd);
760 } else if ((arg1 = next_arg(&cmd))) {
761 ; /*
762 * Unhandled response-data with at least two words.
763 * Ignore it.
764 *
765 * NEEDSWORK: Previously this case handled '<num> EXISTS'
766 * and '<num> RECENT' but as a probably-unintended side
767 * effect it ignores other unrecognized two-word
768 * responses. imap-send doesn't ever try to read
769 * messages or mailboxes these days, so consider
770 * eliminating this case.
771 */
772 } else {
773 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
774 return RESP_BAD;
775 }
776 } else if (!imap->in_progress) {
777 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
778 return RESP_BAD;
779 } else if (*arg == '+') {
780 /* This can happen only with the last command underway, as
781 it enforces a round-trip. */
782 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
783 offsetof(struct imap_cmd, next));
784 if (cmdp->cb.data) {
785 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
786 FREE_AND_NULL(cmdp->cb.data);
787 if (n != (int)cmdp->cb.dlen)
788 return RESP_BAD;
789 } else if (cmdp->cb.cont) {
790 if (cmdp->cb.cont(ctx, cmd))
791 return RESP_BAD;
792 } else {
793 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
794 return RESP_BAD;
795 }
796 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
797 return RESP_BAD;
798 if (!cmdp->cb.cont)
799 imap->literal_pending = 0;
800 if (!tcmd)
801 return DRV_OK;
802 } else {
803 tag = atoi(arg);
804 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
805 if (cmdp->tag == tag)
806 goto gottag;
807 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
808 return RESP_BAD;
809 gottag:
810 if (!(*pcmdp = cmdp->next))
811 imap->in_progress_append = pcmdp;
812 imap->num_in_progress--;
813 if (cmdp->cb.cont || cmdp->cb.data)
814 imap->literal_pending = 0;
815 arg = next_arg(&cmd);
816 if (!arg)
817 arg = "";
818 if (!strcmp("OK", arg))
819 resp = DRV_OK;
820 else {
821 if (!strcmp("NO", arg))
822 resp = RESP_NO;
823 else /*if (!strcmp("BAD", arg))*/
824 resp = RESP_BAD;
825 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
826 !starts_with(cmdp->cmd, "LOGIN") ?
827 cmdp->cmd : "LOGIN <user> <pass>",
828 arg, cmd ? cmd : "");
829 }
830 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
831 resp = resp2;
832 free(cmdp->cb.data);
833 free(cmdp->cmd);
834 free(cmdp);
835 if (!tcmd || tcmd == cmdp)
836 return resp;
837 }
838 }
839 /* not reached */
840 }
841
842 static void imap_close_server(struct imap_store *ictx)
843 {
844 struct imap *imap = ictx->imap;
845
846 if (imap->buf.sock.fd[0] != -1) {
847 imap_exec(ictx, NULL, "LOGOUT");
848 socket_shutdown(&imap->buf.sock);
849 }
850 free(imap);
851 }
852
853 static void imap_close_store(struct imap_store *ctx)
854 {
855 imap_close_server(ctx);
856 free(ctx);
857 }
858
859 #ifndef NO_OPENSSL
860
861 /*
862 * hexchar() and cram() functions are based on the code from the isync
863 * project (http://isync.sf.net/).
864 */
865 static char hexchar(unsigned int b)
866 {
867 return b < 10 ? '0' + b : 'a' + (b - 10);
868 }
869
870 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
871 static char *cram(const char *challenge_64, const char *user, const char *pass)
872 {
873 int i, resp_len, encoded_len, decoded_len;
874 unsigned char hash[16];
875 char hex[33];
876 char *response, *response_64, *challenge;
877
878 /*
879 * length of challenge_64 (i.e. base-64 encoded string) is a good
880 * enough upper bound for challenge (decoded result).
881 */
882 encoded_len = strlen(challenge_64);
883 challenge = xmalloc(encoded_len);
884 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
885 (unsigned char *)challenge_64, encoded_len);
886 if (decoded_len < 0)
887 die("invalid challenge %s", challenge_64);
888 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
889 die("HMAC error");
890
891 hex[32] = 0;
892 for (i = 0; i < 16; i++) {
893 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
894 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
895 }
896
897 /* response: "<user> <digest in hex>" */
898 response = xstrfmt("%s %s", user, hex);
899 resp_len = strlen(response);
900
901 response_64 = xmallocz(ENCODED_SIZE(resp_len));
902 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
903 (unsigned char *)response, resp_len);
904 if (encoded_len < 0)
905 die("EVP_EncodeBlock error");
906 return (char *)response_64;
907 }
908
909 #else
910
911 static char *cram(const char *challenge_64 UNUSED,
912 const char *user UNUSED,
913 const char *pass UNUSED)
914 {
915 die("If you want to use CRAM-MD5 authenticate method, "
916 "you have to build git-imap-send with OpenSSL library.");
917 }
918
919 #endif
920
921 static int auth_cram_md5(struct imap_store *ctx, const char *prompt)
922 {
923 int ret;
924 char *response;
925
926 response = cram(prompt, server.user, server.pass);
927
928 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
929 if (ret != strlen(response))
930 return error("IMAP error: sending response failed");
931
932 free(response);
933
934 return 0;
935 }
936
937 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
938 {
939 if (srvc->user && srvc->pass)
940 return;
941
942 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
943 cred->host = xstrdup(srvc->host);
944
945 cred->username = xstrdup_or_null(srvc->user);
946 cred->password = xstrdup_or_null(srvc->pass);
947
948 credential_fill(cred);
949
950 if (!srvc->user)
951 srvc->user = xstrdup(cred->username);
952 if (!srvc->pass)
953 srvc->pass = xstrdup(cred->password);
954 }
955
956 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, const char *folder)
957 {
958 struct credential cred = CREDENTIAL_INIT;
959 struct imap_store *ctx;
960 struct imap *imap;
961 char *arg, *rsp;
962 int s = -1, preauth;
963
964 CALLOC_ARRAY(ctx, 1);
965
966 ctx->imap = CALLOC_ARRAY(imap, 1);
967 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
968 imap->in_progress_append = &imap->in_progress;
969
970 /* open connection to IMAP server */
971
972 if (srvc->tunnel) {
973 struct child_process tunnel = CHILD_PROCESS_INIT;
974
975 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
976
977 strvec_push(&tunnel.args, srvc->tunnel);
978 tunnel.use_shell = 1;
979 tunnel.in = -1;
980 tunnel.out = -1;
981 if (start_command(&tunnel))
982 die("cannot start proxy %s", srvc->tunnel);
983
984 imap->buf.sock.fd[0] = tunnel.out;
985 imap->buf.sock.fd[1] = tunnel.in;
986
987 imap_info("ok\n");
988 } else {
989 #ifndef NO_IPV6
990 struct addrinfo hints, *ai0, *ai;
991 int gai;
992 char portstr[6];
993
994 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
995
996 memset(&hints, 0, sizeof(hints));
997 hints.ai_socktype = SOCK_STREAM;
998 hints.ai_protocol = IPPROTO_TCP;
999
1000 imap_info("Resolving %s... ", srvc->host);
1001 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
1002 if (gai) {
1003 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
1004 goto bail;
1005 }
1006 imap_info("ok\n");
1007
1008 for (ai0 = ai; ai; ai = ai->ai_next) {
1009 char addr[NI_MAXHOST];
1010
1011 s = socket(ai->ai_family, ai->ai_socktype,
1012 ai->ai_protocol);
1013 if (s < 0)
1014 continue;
1015
1016 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1017 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1018 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1019
1020 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1021 close(s);
1022 s = -1;
1023 perror("connect");
1024 continue;
1025 }
1026
1027 break;
1028 }
1029 freeaddrinfo(ai0);
1030 #else /* NO_IPV6 */
1031 struct hostent *he;
1032 struct sockaddr_in addr;
1033
1034 memset(&addr, 0, sizeof(addr));
1035 addr.sin_port = htons(srvc->port);
1036 addr.sin_family = AF_INET;
1037
1038 imap_info("Resolving %s... ", srvc->host);
1039 he = gethostbyname(srvc->host);
1040 if (!he) {
1041 perror("gethostbyname");
1042 goto bail;
1043 }
1044 imap_info("ok\n");
1045
1046 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1047
1048 s = socket(PF_INET, SOCK_STREAM, 0);
1049
1050 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1051 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1052 close(s);
1053 s = -1;
1054 perror("connect");
1055 }
1056 #endif
1057 if (s < 0) {
1058 fputs("Error: unable to connect to server.\n", stderr);
1059 goto bail;
1060 }
1061
1062 imap->buf.sock.fd[0] = s;
1063 imap->buf.sock.fd[1] = dup(s);
1064
1065 if (srvc->use_ssl &&
1066 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1067 close(s);
1068 goto bail;
1069 }
1070 imap_info("ok\n");
1071 }
1072
1073 /* read the greeting string */
1074 if (buffer_gets(&imap->buf, &rsp)) {
1075 fprintf(stderr, "IMAP error: no greeting response\n");
1076 goto bail;
1077 }
1078 arg = next_arg(&rsp);
1079 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1080 fprintf(stderr, "IMAP error: invalid greeting response\n");
1081 goto bail;
1082 }
1083 preauth = 0;
1084 if (!strcmp("PREAUTH", arg))
1085 preauth = 1;
1086 else if (strcmp("OK", arg) != 0) {
1087 fprintf(stderr, "IMAP error: unknown greeting response\n");
1088 goto bail;
1089 }
1090 parse_response_code(ctx, NULL, rsp);
1091 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1092 goto bail;
1093
1094 if (!preauth) {
1095 #ifndef NO_OPENSSL
1096 if (!srvc->use_ssl && CAP(STARTTLS)) {
1097 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1098 goto bail;
1099 if (ssl_socket_connect(&imap->buf.sock, 1,
1100 srvc->ssl_verify))
1101 goto bail;
1102 /* capabilities may have changed, so get the new capabilities */
1103 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1104 goto bail;
1105 }
1106 #endif
1107 imap_info("Logging in...\n");
1108 server_fill_credential(srvc, &cred);
1109
1110 if (srvc->auth_method) {
1111 struct imap_cmd_cb cb;
1112
1113 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1114 if (!CAP(AUTH_CRAM_MD5)) {
1115 fprintf(stderr, "You specified "
1116 "CRAM-MD5 as authentication method, "
1117 "but %s doesn't support it.\n", srvc->host);
1118 goto bail;
1119 }
1120 /* CRAM-MD5 */
1121
1122 memset(&cb, 0, sizeof(cb));
1123 cb.cont = auth_cram_md5;
1124 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1125 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1126 goto bail;
1127 }
1128 } else {
1129 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1130 goto bail;
1131 }
1132 } else {
1133 if (CAP(NOLOGIN)) {
1134 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1135 srvc->user, srvc->host);
1136 goto bail;
1137 }
1138 if (!imap->buf.sock.ssl)
1139 imap_warn("*** IMAP Warning *** Password is being "
1140 "sent in the clear\n");
1141 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1142 fprintf(stderr, "IMAP error: LOGIN failed\n");
1143 goto bail;
1144 }
1145 }
1146 } /* !preauth */
1147
1148 if (cred.username)
1149 credential_approve(&cred);
1150 credential_clear(&cred);
1151
1152 /* check the target mailbox exists */
1153 ctx->name = folder;
1154 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1155 case RESP_OK:
1156 /* ok */
1157 break;
1158 case RESP_BAD:
1159 fprintf(stderr, "IMAP error: could not check mailbox\n");
1160 goto out;
1161 case RESP_NO:
1162 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1163 imap_info("Created missing mailbox\n");
1164 } else {
1165 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1166 goto out;
1167 }
1168 break;
1169 }
1170
1171 ctx->prefix = "";
1172 return ctx;
1173
1174 bail:
1175 if (cred.username)
1176 credential_reject(&cred);
1177 credential_clear(&cred);
1178
1179 out:
1180 imap_close_store(ctx);
1181 return NULL;
1182 }
1183
1184 /*
1185 * Insert CR characters as necessary in *msg to ensure that every LF
1186 * character in *msg is preceded by a CR.
1187 */
1188 static void lf_to_crlf(struct strbuf *msg)
1189 {
1190 char *new_msg;
1191 size_t i, j;
1192 char lastc;
1193
1194 /* First pass: tally, in j, the size of the new_msg string: */
1195 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1196 if (msg->buf[i] == '\n' && lastc != '\r')
1197 j++; /* a CR will need to be added here */
1198 lastc = msg->buf[i];
1199 j++;
1200 }
1201
1202 new_msg = xmallocz(j);
1203
1204 /*
1205 * Second pass: write the new_msg string. Note that this loop is
1206 * otherwise identical to the first pass.
1207 */
1208 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1209 if (msg->buf[i] == '\n' && lastc != '\r')
1210 new_msg[j++] = '\r';
1211 lastc = new_msg[j++] = msg->buf[i];
1212 }
1213 strbuf_attach(msg, new_msg, j, j + 1);
1214 }
1215
1216 /*
1217 * Store msg to IMAP. Also detach and free the data from msg->data,
1218 * leaving msg->data empty.
1219 */
1220 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1221 {
1222 struct imap *imap = ctx->imap;
1223 struct imap_cmd_cb cb;
1224 const char *prefix, *box;
1225 int ret;
1226
1227 lf_to_crlf(msg);
1228 memset(&cb, 0, sizeof(cb));
1229
1230 cb.dlen = msg->len;
1231 cb.data = strbuf_detach(msg, NULL);
1232
1233 box = ctx->name;
1234 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1235 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1236 imap->caps = imap->rcaps;
1237 if (ret != DRV_OK)
1238 return ret;
1239
1240 return DRV_OK;
1241 }
1242
1243 static void wrap_in_html(struct strbuf *msg)
1244 {
1245 struct strbuf buf = STRBUF_INIT;
1246 static char *content_type = "Content-Type: text/html;\n";
1247 static char *pre_open = "<pre>\n";
1248 static char *pre_close = "</pre>\n";
1249 const char *body = strstr(msg->buf, "\n\n");
1250
1251 if (!body)
1252 return; /* Headers but no body; no wrapping needed */
1253
1254 body += 2;
1255
1256 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1257 strbuf_addstr(&buf, content_type);
1258 strbuf_addch(&buf, '\n');
1259 strbuf_addstr(&buf, pre_open);
1260 strbuf_addstr_xml_quoted(&buf, body);
1261 strbuf_addstr(&buf, pre_close);
1262
1263 strbuf_release(msg);
1264 *msg = buf;
1265 }
1266
1267 static int count_messages(struct strbuf *all_msgs)
1268 {
1269 int count = 0;
1270 char *p = all_msgs->buf;
1271
1272 while (1) {
1273 if (starts_with(p, "From ")) {
1274 p = strstr(p+5, "\nFrom: ");
1275 if (!p) break;
1276 p = strstr(p+7, "\nDate: ");
1277 if (!p) break;
1278 p = strstr(p+7, "\nSubject: ");
1279 if (!p) break;
1280 p += 10;
1281 count++;
1282 }
1283 p = strstr(p+5, "\nFrom ");
1284 if (!p)
1285 break;
1286 p++;
1287 }
1288 return count;
1289 }
1290
1291 /*
1292 * Copy the next message from all_msgs, starting at offset *ofs, to
1293 * msg. Update *ofs to the start of the following message. Return
1294 * true iff a message was successfully copied.
1295 */
1296 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1297 {
1298 char *p, *data;
1299 size_t len;
1300
1301 if (*ofs >= all_msgs->len)
1302 return 0;
1303
1304 data = &all_msgs->buf[*ofs];
1305 len = all_msgs->len - *ofs;
1306
1307 if (len < 5 || !starts_with(data, "From "))
1308 return 0;
1309
1310 p = strchr(data, '\n');
1311 if (p) {
1312 p++;
1313 len -= p - data;
1314 *ofs += p - data;
1315 data = p;
1316 }
1317
1318 p = strstr(data, "\nFrom ");
1319 if (p)
1320 len = &p[1] - data;
1321
1322 strbuf_add(msg, data, len);
1323 *ofs += len;
1324 return 1;
1325 }
1326
1327 static int git_imap_config(const char *var, const char *val,
1328 const struct config_context *ctx, void *cb)
1329 {
1330
1331 if (!strcmp("imap.sslverify", var))
1332 server.ssl_verify = git_config_bool(var, val);
1333 else if (!strcmp("imap.preformattedhtml", var))
1334 server.use_html = git_config_bool(var, val);
1335 else if (!strcmp("imap.folder", var))
1336 return git_config_string(&server.folder, var, val);
1337 else if (!strcmp("imap.user", var))
1338 return git_config_string(&server.user, var, val);
1339 else if (!strcmp("imap.pass", var))
1340 return git_config_string(&server.pass, var, val);
1341 else if (!strcmp("imap.tunnel", var))
1342 return git_config_string(&server.tunnel, var, val);
1343 else if (!strcmp("imap.authmethod", var))
1344 return git_config_string(&server.auth_method, var, val);
1345 else if (!strcmp("imap.port", var))
1346 server.port = git_config_int(var, val, ctx->kvi);
1347 else if (!strcmp("imap.host", var)) {
1348 if (!val) {
1349 git_die_config("imap.host", "Missing value for 'imap.host'");
1350 } else {
1351 if (starts_with(val, "imap:"))
1352 val += 5;
1353 else if (starts_with(val, "imaps:")) {
1354 val += 6;
1355 server.use_ssl = 1;
1356 }
1357 if (starts_with(val, "//"))
1358 val += 2;
1359 server.host = xstrdup(val);
1360 }
1361 } else
1362 return git_default_config(var, val, ctx, cb);
1363
1364 return 0;
1365 }
1366
1367 static int append_msgs_to_imap(struct imap_server_conf *server,
1368 struct strbuf* all_msgs, int total)
1369 {
1370 struct strbuf msg = STRBUF_INIT;
1371 struct imap_store *ctx = NULL;
1372 int ofs = 0;
1373 int r;
1374 int n = 0;
1375
1376 ctx = imap_open_store(server, server->folder);
1377 if (!ctx) {
1378 fprintf(stderr, "failed to open store\n");
1379 return 1;
1380 }
1381 ctx->name = server->folder;
1382
1383 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1384 while (1) {
1385 unsigned percent = n * 100 / total;
1386
1387 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1388
1389 if (!split_msg(all_msgs, &msg, &ofs))
1390 break;
1391 if (server->use_html)
1392 wrap_in_html(&msg);
1393 r = imap_store_msg(ctx, &msg);
1394 if (r != DRV_OK)
1395 break;
1396 n++;
1397 }
1398 fprintf(stderr, "\n");
1399
1400 imap_close_store(ctx);
1401
1402 return 0;
1403 }
1404
1405 #ifdef USE_CURL_FOR_IMAP_SEND
1406 static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
1407 {
1408 CURL *curl;
1409 struct strbuf path = STRBUF_INIT;
1410 char *uri_encoded_folder;
1411
1412 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1413 die("curl_global_init failed");
1414
1415 curl = curl_easy_init();
1416
1417 if (!curl)
1418 die("curl_easy_init failed");
1419
1420 server_fill_credential(srvc, cred);
1421 curl_easy_setopt(curl, CURLOPT_USERNAME, srvc->user);
1422 curl_easy_setopt(curl, CURLOPT_PASSWORD, srvc->pass);
1423
1424 strbuf_addstr(&path, srvc->use_ssl ? "imaps://" : "imap://");
1425 strbuf_addstr(&path, srvc->host);
1426 if (!path.len || path.buf[path.len - 1] != '/')
1427 strbuf_addch(&path, '/');
1428
1429 uri_encoded_folder = curl_easy_escape(curl, srvc->folder, 0);
1430 if (!uri_encoded_folder)
1431 die("failed to encode server folder");
1432 strbuf_addstr(&path, uri_encoded_folder);
1433 curl_free(uri_encoded_folder);
1434
1435 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1436 strbuf_release(&path);
1437 curl_easy_setopt(curl, CURLOPT_PORT, srvc->port);
1438
1439 if (srvc->auth_method) {
1440 #ifndef GIT_CURL_HAVE_CURLOPT_LOGIN_OPTIONS
1441 warning("No LOGIN_OPTIONS support in this cURL version");
1442 #else
1443 struct strbuf auth = STRBUF_INIT;
1444 strbuf_addstr(&auth, "AUTH=");
1445 strbuf_addstr(&auth, srvc->auth_method);
1446 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1447 strbuf_release(&auth);
1448 #endif
1449 }
1450
1451 if (!srvc->use_ssl)
1452 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1453
1454 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, srvc->ssl_verify);
1455 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, srvc->ssl_verify);
1456
1457 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1458
1459 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1460
1461 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1462 http_trace_curl_no_data();
1463 setup_curl_trace(curl);
1464
1465 return curl;
1466 }
1467
1468 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1469 struct strbuf* all_msgs, int total)
1470 {
1471 int ofs = 0;
1472 int n = 0;
1473 struct buffer msgbuf = { STRBUF_INIT, 0 };
1474 CURL *curl;
1475 CURLcode res = CURLE_OK;
1476 struct credential cred = CREDENTIAL_INIT;
1477
1478 curl = setup_curl(server, &cred);
1479 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1480
1481 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1482 while (1) {
1483 unsigned percent = n * 100 / total;
1484 int prev_len;
1485
1486 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1487
1488 prev_len = msgbuf.buf.len;
1489 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1490 break;
1491 if (server->use_html)
1492 wrap_in_html(&msgbuf.buf);
1493 lf_to_crlf(&msgbuf.buf);
1494
1495 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1496 (curl_off_t)(msgbuf.buf.len-prev_len));
1497
1498 res = curl_easy_perform(curl);
1499
1500 if(res != CURLE_OK) {
1501 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1502 curl_easy_strerror(res));
1503 break;
1504 }
1505
1506 n++;
1507 }
1508 fprintf(stderr, "\n");
1509
1510 curl_easy_cleanup(curl);
1511 curl_global_cleanup();
1512
1513 if (cred.username) {
1514 if (res == CURLE_OK)
1515 credential_approve(&cred);
1516 else if (res == CURLE_LOGIN_DENIED)
1517 credential_reject(&cred);
1518 }
1519
1520 credential_clear(&cred);
1521
1522 return res != CURLE_OK;
1523 }
1524 #endif
1525
1526 int cmd_main(int argc, const char **argv)
1527 {
1528 struct strbuf all_msgs = STRBUF_INIT;
1529 int total;
1530 int nongit_ok;
1531
1532 setup_git_directory_gently(&nongit_ok);
1533 git_config(git_imap_config, NULL);
1534
1535 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1536
1537 if (argc)
1538 usage_with_options(imap_send_usage, imap_send_options);
1539
1540 #ifndef USE_CURL_FOR_IMAP_SEND
1541 if (use_curl) {
1542 warning("--curl not supported in this build");
1543 use_curl = 0;
1544 }
1545 #elif defined(NO_OPENSSL)
1546 if (!use_curl) {
1547 warning("--no-curl not supported in this build");
1548 use_curl = 1;
1549 }
1550 #endif
1551
1552 if (!server.port)
1553 server.port = server.use_ssl ? 993 : 143;
1554
1555 if (!server.folder) {
1556 fprintf(stderr, "no imap store specified\n");
1557 return 1;
1558 }
1559 if (!server.host) {
1560 if (!server.tunnel) {
1561 fprintf(stderr, "no imap host specified\n");
1562 return 1;
1563 }
1564 server.host = "tunnel";
1565 }
1566
1567 /* read the messages */
1568 if (strbuf_read(&all_msgs, 0, 0) < 0) {
1569 error_errno(_("could not read from stdin"));
1570 return 1;
1571 }
1572
1573 if (all_msgs.len == 0) {
1574 fprintf(stderr, "nothing to send\n");
1575 return 1;
1576 }
1577
1578 total = count_messages(&all_msgs);
1579 if (!total) {
1580 fprintf(stderr, "no messages to send\n");
1581 return 1;
1582 }
1583
1584 /* write it to the imap server */
1585
1586 if (server.tunnel)
1587 return append_msgs_to_imap(&server, &all_msgs, total);
1588
1589 #ifdef USE_CURL_FOR_IMAP_SEND
1590 if (use_curl)
1591 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1592 #endif
1593
1594 return append_msgs_to_imap(&server, &all_msgs, total);
1595 }
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