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Merge branch 'ma/bisect-leakfix'
[git.git] / imap-send.c
blob12cc4ea4c8ef9de6acf3116f478ed22e18054a98
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 "config.h"
27 #include "credential.h"
28 #include "exec_cmd.h"
29 #include "run-command.h"
30 #include "parse-options.h"
31 #ifdef NO_OPENSSL
32 typedef void *SSL;
33 #endif
34 #ifdef USE_CURL_FOR_IMAP_SEND
35 #include "http.h"
36 #endif
37
38 #if defined(USE_CURL_FOR_IMAP_SEND)
39 /* Always default to curl if it's available. */
40 #define USE_CURL_DEFAULT 1
41 #else
42 /* We don't have curl, so continue to use the historical implementation */
43 #define USE_CURL_DEFAULT 0
44 #endif
45
46 static int verbosity;
47 static int use_curl = USE_CURL_DEFAULT;
48
49 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
50
51 static struct option imap_send_options[] = {
52 OPT__VERBOSITY(&verbosity),
53 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
54 OPT_END()
55 };
56
57 #undef DRV_OK
58 #define DRV_OK 0
59 #define DRV_MSG_BAD -1
60 #define DRV_BOX_BAD -2
61 #define DRV_STORE_BAD -3
62
63 __attribute__((format (printf, 1, 2)))
64 static void imap_info(const char *, ...);
65 __attribute__((format (printf, 1, 2)))
66 static void imap_warn(const char *, ...);
67
68 static char *next_arg(char **);
69
70 __attribute__((format (printf, 3, 4)))
71 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
72
73 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
74 {
75 int len;
76 char tmp[8192];
77
78 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
79 if (len < 0)
80 die("Fatal: Out of memory");
81 if (len >= sizeof(tmp))
82 die("imap command overflow!");
83 *strp = xmemdupz(tmp, len);
84 return len;
85 }
86
87 struct imap_server_conf {
88 char *name;
89 char *tunnel;
90 char *host;
91 int port;
92 char *folder;
93 char *user;
94 char *pass;
95 int use_ssl;
96 int ssl_verify;
97 int use_html;
98 char *auth_method;
99 };
100
101 static struct imap_server_conf server = {
102 NULL, /* name */
103 NULL, /* tunnel */
104 NULL, /* host */
105 0, /* port */
106 NULL, /* folder */
107 NULL, /* user */
108 NULL, /* pass */
109 0, /* use_ssl */
110 1, /* ssl_verify */
111 0, /* use_html */
112 NULL, /* auth_method */
113 };
114
115 struct imap_socket {
116 int fd[2];
117 SSL *ssl;
118 };
119
120 struct imap_buffer {
121 struct imap_socket sock;
122 int bytes;
123 int offset;
124 char buf[1024];
125 };
126
127 struct imap_cmd;
128
129 struct imap {
130 int uidnext; /* from SELECT responses */
131 unsigned caps, rcaps; /* CAPABILITY results */
132 /* command queue */
133 int nexttag, num_in_progress, literal_pending;
134 struct imap_cmd *in_progress, **in_progress_append;
135 struct imap_buffer buf; /* this is BIG, so put it last */
136 };
137
138 struct imap_store {
139 /* currently open mailbox */
140 const char *name; /* foreign! maybe preset? */
141 int uidvalidity;
142 struct imap *imap;
143 const char *prefix;
144 };
145
146 struct imap_cmd_cb {
147 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
148 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
149 void *ctx;
150 char *data;
151 int dlen;
152 int uid;
153 };
154
155 struct imap_cmd {
156 struct imap_cmd *next;
157 struct imap_cmd_cb cb;
158 char *cmd;
159 int tag;
160 };
161
162 #define CAP(cap) (imap->caps & (1 << (cap)))
163
164 enum CAPABILITY {
165 NOLOGIN = 0,
166 UIDPLUS,
167 LITERALPLUS,
168 NAMESPACE,
169 STARTTLS,
170 AUTH_CRAM_MD5
171 };
172
173 static const char *cap_list[] = {
174 "LOGINDISABLED",
175 "UIDPLUS",
176 "LITERAL+",
177 "NAMESPACE",
178 "STARTTLS",
179 "AUTH=CRAM-MD5",
180 };
181
182 #define RESP_OK 0
183 #define RESP_NO 1
184 #define RESP_BAD 2
185
186 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
187
188
189 #ifndef NO_OPENSSL
190 static void ssl_socket_perror(const char *func)
191 {
192 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
193 }
194 #endif
195
196 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
197 {
198 #ifndef NO_OPENSSL
199 if (sock->ssl) {
200 int sslerr = SSL_get_error(sock->ssl, ret);
201 switch (sslerr) {
202 case SSL_ERROR_NONE:
203 break;
204 case SSL_ERROR_SYSCALL:
205 perror("SSL_connect");
206 break;
207 default:
208 ssl_socket_perror("SSL_connect");
209 break;
210 }
211 } else
212 #endif
213 {
214 if (ret < 0)
215 perror(func);
216 else
217 fprintf(stderr, "%s: unexpected EOF\n", func);
218 }
219 }
220
221 #ifdef NO_OPENSSL
222 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
223 {
224 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
225 return -1;
226 }
227
228 #else
229
230 static int host_matches(const char *host, const char *pattern)
231 {
232 if (pattern[0] == '*' && pattern[1] == '.') {
233 pattern += 2;
234 if (!(host = strchr(host, '.')))
235 return 0;
236 host++;
237 }
238
239 return *host && *pattern && !strcasecmp(host, pattern);
240 }
241
242 static int verify_hostname(X509 *cert, const char *hostname)
243 {
244 int len;
245 X509_NAME *subj;
246 char cname[1000];
247 int i, found;
248 STACK_OF(GENERAL_NAME) *subj_alt_names;
249
250 /* try the DNS subjectAltNames */
251 found = 0;
252 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
253 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
254 for (i = 0; !found && i < num_subj_alt_names; i++) {
255 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
256 if (subj_alt_name->type == GEN_DNS &&
257 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
258 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
259 found = 1;
260 }
261 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
262 }
263 if (found)
264 return 0;
265
266 /* try the common name */
267 if (!(subj = X509_get_subject_name(cert)))
268 return error("cannot get certificate subject");
269 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
270 return error("cannot get certificate common name");
271 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
272 return 0;
273 return error("certificate owner '%s' does not match hostname '%s'",
274 cname, hostname);
275 }
276
277 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
278 {
279 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
280 const SSL_METHOD *meth;
281 #else
282 SSL_METHOD *meth;
283 #endif
284 SSL_CTX *ctx;
285 int ret;
286 X509 *cert;
287
288 SSL_library_init();
289 SSL_load_error_strings();
290
291 meth = SSLv23_method();
292 if (!meth) {
293 ssl_socket_perror("SSLv23_method");
294 return -1;
295 }
296
297 ctx = SSL_CTX_new(meth);
298 if (!ctx) {
299 ssl_socket_perror("SSL_CTX_new");
300 return -1;
301 }
302
303 if (use_tls_only)
304 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
305
306 if (verify)
307 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
308
309 if (!SSL_CTX_set_default_verify_paths(ctx)) {
310 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
311 return -1;
312 }
313 sock->ssl = SSL_new(ctx);
314 if (!sock->ssl) {
315 ssl_socket_perror("SSL_new");
316 return -1;
317 }
318 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
319 ssl_socket_perror("SSL_set_rfd");
320 return -1;
321 }
322 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
323 ssl_socket_perror("SSL_set_wfd");
324 return -1;
325 }
326
327 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
328 /*
329 * SNI (RFC4366)
330 * OpenSSL does not document this function, but the implementation
331 * returns 1 on success, 0 on failure after calling SSLerr().
332 */
333 ret = SSL_set_tlsext_host_name(sock->ssl, server.host);
334 if (ret != 1)
335 warning("SSL_set_tlsext_host_name(%s) failed.", server.host);
336 #endif
337
338 ret = SSL_connect(sock->ssl);
339 if (ret <= 0) {
340 socket_perror("SSL_connect", sock, ret);
341 return -1;
342 }
343
344 if (verify) {
345 /* make sure the hostname matches that of the certificate */
346 cert = SSL_get_peer_certificate(sock->ssl);
347 if (!cert)
348 return error("unable to get peer certificate.");
349 if (verify_hostname(cert, server.host) < 0)
350 return -1;
351 }
352
353 return 0;
354 }
355 #endif
356
357 static int socket_read(struct imap_socket *sock, char *buf, int len)
358 {
359 ssize_t n;
360 #ifndef NO_OPENSSL
361 if (sock->ssl)
362 n = SSL_read(sock->ssl, buf, len);
363 else
364 #endif
365 n = xread(sock->fd[0], buf, len);
366 if (n <= 0) {
367 socket_perror("read", sock, n);
368 close(sock->fd[0]);
369 close(sock->fd[1]);
370 sock->fd[0] = sock->fd[1] = -1;
371 }
372 return n;
373 }
374
375 static int socket_write(struct imap_socket *sock, const char *buf, int len)
376 {
377 int n;
378 #ifndef NO_OPENSSL
379 if (sock->ssl)
380 n = SSL_write(sock->ssl, buf, len);
381 else
382 #endif
383 n = write_in_full(sock->fd[1], buf, len);
384 if (n != len) {
385 socket_perror("write", sock, n);
386 close(sock->fd[0]);
387 close(sock->fd[1]);
388 sock->fd[0] = sock->fd[1] = -1;
389 }
390 return n;
391 }
392
393 static void socket_shutdown(struct imap_socket *sock)
394 {
395 #ifndef NO_OPENSSL
396 if (sock->ssl) {
397 SSL_shutdown(sock->ssl);
398 SSL_free(sock->ssl);
399 }
400 #endif
401 close(sock->fd[0]);
402 close(sock->fd[1]);
403 }
404
405 /* simple line buffering */
406 static int buffer_gets(struct imap_buffer *b, char **s)
407 {
408 int n;
409 int start = b->offset;
410
411 *s = b->buf + start;
412
413 for (;;) {
414 /* make sure we have enough data to read the \r\n sequence */
415 if (b->offset + 1 >= b->bytes) {
416 if (start) {
417 /* shift down used bytes */
418 *s = b->buf;
419
420 assert(start <= b->bytes);
421 n = b->bytes - start;
422
423 if (n)
424 memmove(b->buf, b->buf + start, n);
425 b->offset -= start;
426 b->bytes = n;
427 start = 0;
428 }
429
430 n = socket_read(&b->sock, b->buf + b->bytes,
431 sizeof(b->buf) - b->bytes);
432
433 if (n <= 0)
434 return -1;
435
436 b->bytes += n;
437 }
438
439 if (b->buf[b->offset] == '\r') {
440 assert(b->offset + 1 < b->bytes);
441 if (b->buf[b->offset + 1] == '\n') {
442 b->buf[b->offset] = 0; /* terminate the string */
443 b->offset += 2; /* next line */
444 if (0 < verbosity)
445 puts(*s);
446 return 0;
447 }
448 }
449
450 b->offset++;
451 }
452 /* not reached */
453 }
454
455 static void imap_info(const char *msg, ...)
456 {
457 va_list va;
458
459 if (0 <= verbosity) {
460 va_start(va, msg);
461 vprintf(msg, va);
462 va_end(va);
463 fflush(stdout);
464 }
465 }
466
467 static void imap_warn(const char *msg, ...)
468 {
469 va_list va;
470
471 if (-2 < verbosity) {
472 va_start(va, msg);
473 vfprintf(stderr, msg, va);
474 va_end(va);
475 }
476 }
477
478 static char *next_arg(char **s)
479 {
480 char *ret;
481
482 if (!s || !*s)
483 return NULL;
484 while (isspace((unsigned char) **s))
485 (*s)++;
486 if (!**s) {
487 *s = NULL;
488 return NULL;
489 }
490 if (**s == '"') {
491 ++*s;
492 ret = *s;
493 *s = strchr(*s, '"');
494 } else {
495 ret = *s;
496 while (**s && !isspace((unsigned char) **s))
497 (*s)++;
498 }
499 if (*s) {
500 if (**s)
501 *(*s)++ = 0;
502 if (!**s)
503 *s = NULL;
504 }
505 return ret;
506 }
507
508 static int nfsnprintf(char *buf, int blen, const char *fmt, ...)
509 {
510 int ret;
511 va_list va;
512
513 va_start(va, fmt);
514 if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen)
515 die("BUG: buffer too small. Please report a bug.");
516 va_end(va);
517 return ret;
518 }
519
520 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
521 struct imap_cmd_cb *cb,
522 const char *fmt, va_list ap)
523 {
524 struct imap *imap = ctx->imap;
525 struct imap_cmd *cmd;
526 int n, bufl;
527 char buf[1024];
528
529 cmd = xmalloc(sizeof(struct imap_cmd));
530 nfvasprintf(&cmd->cmd, fmt, ap);
531 cmd->tag = ++imap->nexttag;
532
533 if (cb)
534 cmd->cb = *cb;
535 else
536 memset(&cmd->cb, 0, sizeof(cmd->cb));
537
538 while (imap->literal_pending)
539 get_cmd_result(ctx, NULL);
540
541 if (!cmd->cb.data)
542 bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd);
543 else
544 bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n",
545 cmd->tag, cmd->cmd, cmd->cb.dlen,
546 CAP(LITERALPLUS) ? "+" : "");
547
548 if (0 < verbosity) {
549 if (imap->num_in_progress)
550 printf("(%d in progress) ", imap->num_in_progress);
551 if (!starts_with(cmd->cmd, "LOGIN"))
552 printf(">>> %s", buf);
553 else
554 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
555 }
556 if (socket_write(&imap->buf.sock, buf, bufl) != bufl) {
557 free(cmd->cmd);
558 free(cmd);
559 if (cb)
560 free(cb->data);
561 return NULL;
562 }
563 if (cmd->cb.data) {
564 if (CAP(LITERALPLUS)) {
565 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
566 free(cmd->cb.data);
567 if (n != cmd->cb.dlen ||
568 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
569 free(cmd->cmd);
570 free(cmd);
571 return NULL;
572 }
573 cmd->cb.data = NULL;
574 } else
575 imap->literal_pending = 1;
576 } else if (cmd->cb.cont)
577 imap->literal_pending = 1;
578 cmd->next = NULL;
579 *imap->in_progress_append = cmd;
580 imap->in_progress_append = &cmd->next;
581 imap->num_in_progress++;
582 return cmd;
583 }
584
585 __attribute__((format (printf, 3, 4)))
586 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
587 const char *fmt, ...)
588 {
589 va_list ap;
590 struct imap_cmd *cmdp;
591
592 va_start(ap, fmt);
593 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
594 va_end(ap);
595 if (!cmdp)
596 return RESP_BAD;
597
598 return get_cmd_result(ctx, cmdp);
599 }
600
601 __attribute__((format (printf, 3, 4)))
602 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
603 const char *fmt, ...)
604 {
605 va_list ap;
606 struct imap_cmd *cmdp;
607
608 va_start(ap, fmt);
609 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
610 va_end(ap);
611 if (!cmdp)
612 return DRV_STORE_BAD;
613
614 switch (get_cmd_result(ctx, cmdp)) {
615 case RESP_BAD: return DRV_STORE_BAD;
616 case RESP_NO: return DRV_MSG_BAD;
617 default: return DRV_OK;
618 }
619 }
620
621 static int skip_imap_list_l(char **sp, int level)
622 {
623 char *s = *sp;
624
625 for (;;) {
626 while (isspace((unsigned char)*s))
627 s++;
628 if (level && *s == ')') {
629 s++;
630 break;
631 }
632 if (*s == '(') {
633 /* sublist */
634 s++;
635 if (skip_imap_list_l(&s, level + 1))
636 goto bail;
637 } else if (*s == '"') {
638 /* quoted string */
639 s++;
640 for (; *s != '"'; s++)
641 if (!*s)
642 goto bail;
643 s++;
644 } else {
645 /* atom */
646 for (; *s && !isspace((unsigned char)*s); s++)
647 if (level && *s == ')')
648 break;
649 }
650
651 if (!level)
652 break;
653 if (!*s)
654 goto bail;
655 }
656 *sp = s;
657 return 0;
658
659 bail:
660 return -1;
661 }
662
663 static void skip_list(char **sp)
664 {
665 skip_imap_list_l(sp, 0);
666 }
667
668 static void parse_capability(struct imap *imap, char *cmd)
669 {
670 char *arg;
671 unsigned i;
672
673 imap->caps = 0x80000000;
674 while ((arg = next_arg(&cmd)))
675 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
676 if (!strcmp(cap_list[i], arg))
677 imap->caps |= 1 << i;
678 imap->rcaps = imap->caps;
679 }
680
681 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
682 char *s)
683 {
684 struct imap *imap = ctx->imap;
685 char *arg, *p;
686
687 if (!s || *s != '[')
688 return RESP_OK; /* no response code */
689 s++;
690 if (!(p = strchr(s, ']'))) {
691 fprintf(stderr, "IMAP error: malformed response code\n");
692 return RESP_BAD;
693 }
694 *p++ = 0;
695 arg = next_arg(&s);
696 if (!arg) {
697 fprintf(stderr, "IMAP error: empty response code\n");
698 return RESP_BAD;
699 }
700 if (!strcmp("UIDVALIDITY", arg)) {
701 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
702 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
703 return RESP_BAD;
704 }
705 } else if (!strcmp("UIDNEXT", arg)) {
706 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
707 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
708 return RESP_BAD;
709 }
710 } else if (!strcmp("CAPABILITY", arg)) {
711 parse_capability(imap, s);
712 } else if (!strcmp("ALERT", arg)) {
713 /* RFC2060 says that these messages MUST be displayed
714 * to the user
715 */
716 for (; isspace((unsigned char)*p); p++);
717 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
718 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
719 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
720 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
721 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
722 return RESP_BAD;
723 }
724 }
725 return RESP_OK;
726 }
727
728 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
729 {
730 struct imap *imap = ctx->imap;
731 struct imap_cmd *cmdp, **pcmdp;
732 char *cmd;
733 const char *arg, *arg1;
734 int n, resp, resp2, tag;
735
736 for (;;) {
737 if (buffer_gets(&imap->buf, &cmd))
738 return RESP_BAD;
739
740 arg = next_arg(&cmd);
741 if (!arg) {
742 fprintf(stderr, "IMAP error: empty response\n");
743 return RESP_BAD;
744 }
745 if (*arg == '*') {
746 arg = next_arg(&cmd);
747 if (!arg) {
748 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
749 return RESP_BAD;
750 }
751
752 if (!strcmp("NAMESPACE", arg)) {
753 /* rfc2342 NAMESPACE response. */
754 skip_list(&cmd); /* Personal mailboxes */
755 skip_list(&cmd); /* Others' mailboxes */
756 skip_list(&cmd); /* Shared mailboxes */
757 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
758 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
759 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
760 return resp;
761 } else if (!strcmp("CAPABILITY", arg)) {
762 parse_capability(imap, cmd);
763 } else if ((arg1 = next_arg(&cmd))) {
764 ; /*
765 * Unhandled response-data with at least two words.
766 * Ignore it.
767 *
768 * NEEDSWORK: Previously this case handled '<num> EXISTS'
769 * and '<num> RECENT' but as a probably-unintended side
770 * effect it ignores other unrecognized two-word
771 * responses. imap-send doesn't ever try to read
772 * messages or mailboxes these days, so consider
773 * eliminating this case.
774 */
775 } else {
776 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
777 return RESP_BAD;
778 }
779 } else if (!imap->in_progress) {
780 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
781 return RESP_BAD;
782 } else if (*arg == '+') {
783 /* This can happen only with the last command underway, as
784 it enforces a round-trip. */
785 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
786 offsetof(struct imap_cmd, next));
787 if (cmdp->cb.data) {
788 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
789 FREE_AND_NULL(cmdp->cb.data);
790 if (n != (int)cmdp->cb.dlen)
791 return RESP_BAD;
792 } else if (cmdp->cb.cont) {
793 if (cmdp->cb.cont(ctx, cmdp, cmd))
794 return RESP_BAD;
795 } else {
796 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
797 return RESP_BAD;
798 }
799 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
800 return RESP_BAD;
801 if (!cmdp->cb.cont)
802 imap->literal_pending = 0;
803 if (!tcmd)
804 return DRV_OK;
805 } else {
806 tag = atoi(arg);
807 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
808 if (cmdp->tag == tag)
809 goto gottag;
810 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
811 return RESP_BAD;
812 gottag:
813 if (!(*pcmdp = cmdp->next))
814 imap->in_progress_append = pcmdp;
815 imap->num_in_progress--;
816 if (cmdp->cb.cont || cmdp->cb.data)
817 imap->literal_pending = 0;
818 arg = next_arg(&cmd);
819 if (!arg)
820 arg = "";
821 if (!strcmp("OK", arg))
822 resp = DRV_OK;
823 else {
824 if (!strcmp("NO", arg))
825 resp = RESP_NO;
826 else /*if (!strcmp("BAD", arg))*/
827 resp = RESP_BAD;
828 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
829 !starts_with(cmdp->cmd, "LOGIN") ?
830 cmdp->cmd : "LOGIN <user> <pass>",
831 arg, cmd ? cmd : "");
832 }
833 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
834 resp = resp2;
835 if (cmdp->cb.done)
836 cmdp->cb.done(ctx, cmdp, resp);
837 free(cmdp->cb.data);
838 free(cmdp->cmd);
839 free(cmdp);
840 if (!tcmd || tcmd == cmdp)
841 return resp;
842 }
843 }
844 /* not reached */
845 }
846
847 static void imap_close_server(struct imap_store *ictx)
848 {
849 struct imap *imap = ictx->imap;
850
851 if (imap->buf.sock.fd[0] != -1) {
852 imap_exec(ictx, NULL, "LOGOUT");
853 socket_shutdown(&imap->buf.sock);
854 }
855 free(imap);
856 }
857
858 static void imap_close_store(struct imap_store *ctx)
859 {
860 imap_close_server(ctx);
861 free(ctx);
862 }
863
864 #ifndef NO_OPENSSL
865
866 /*
867 * hexchar() and cram() functions are based on the code from the isync
868 * project (http://isync.sf.net/).
869 */
870 static char hexchar(unsigned int b)
871 {
872 return b < 10 ? '0' + b : 'a' + (b - 10);
873 }
874
875 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
876 static char *cram(const char *challenge_64, const char *user, const char *pass)
877 {
878 int i, resp_len, encoded_len, decoded_len;
879 unsigned char hash[16];
880 char hex[33];
881 char *response, *response_64, *challenge;
882
883 /*
884 * length of challenge_64 (i.e. base-64 encoded string) is a good
885 * enough upper bound for challenge (decoded result).
886 */
887 encoded_len = strlen(challenge_64);
888 challenge = xmalloc(encoded_len);
889 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
890 (unsigned char *)challenge_64, encoded_len);
891 if (decoded_len < 0)
892 die("invalid challenge %s", challenge_64);
893 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
894 die("HMAC error");
895
896 hex[32] = 0;
897 for (i = 0; i < 16; i++) {
898 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
899 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
900 }
901
902 /* response: "<user> <digest in hex>" */
903 response = xstrfmt("%s %s", user, hex);
904 resp_len = strlen(response);
905
906 response_64 = xmallocz(ENCODED_SIZE(resp_len));
907 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
908 (unsigned char *)response, resp_len);
909 if (encoded_len < 0)
910 die("EVP_EncodeBlock error");
911 return (char *)response_64;
912 }
913
914 #else
915
916 static char *cram(const char *challenge_64, const char *user, const char *pass)
917 {
918 die("If you want to use CRAM-MD5 authenticate method, "
919 "you have to build git-imap-send with OpenSSL library.");
920 }
921
922 #endif
923
924 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
925 {
926 int ret;
927 char *response;
928
929 response = cram(prompt, server.user, server.pass);
930
931 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
932 if (ret != strlen(response))
933 return error("IMAP error: sending response failed");
934
935 free(response);
936
937 return 0;
938 }
939
940 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
941 {
942 if (srvc->user && srvc->pass)
943 return;
944
945 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
946 cred->host = xstrdup(srvc->host);
947
948 cred->username = xstrdup_or_null(srvc->user);
949 cred->password = xstrdup_or_null(srvc->pass);
950
951 credential_fill(cred);
952
953 if (!srvc->user)
954 srvc->user = xstrdup(cred->username);
955 if (!srvc->pass)
956 srvc->pass = xstrdup(cred->password);
957 }
958
959 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
960 {
961 struct credential cred = CREDENTIAL_INIT;
962 struct imap_store *ctx;
963 struct imap *imap;
964 char *arg, *rsp;
965 int s = -1, preauth;
966
967 ctx = xcalloc(1, sizeof(*ctx));
968
969 ctx->imap = imap = xcalloc(1, sizeof(*imap));
970 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
971 imap->in_progress_append = &imap->in_progress;
972
973 /* open connection to IMAP server */
974
975 if (srvc->tunnel) {
976 struct child_process tunnel = CHILD_PROCESS_INIT;
977
978 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
979
980 argv_array_push(&tunnel.args, srvc->tunnel);
981 tunnel.use_shell = 1;
982 tunnel.in = -1;
983 tunnel.out = -1;
984 if (start_command(&tunnel))
985 die("cannot start proxy %s", srvc->tunnel);
986
987 imap->buf.sock.fd[0] = tunnel.out;
988 imap->buf.sock.fd[1] = tunnel.in;
989
990 imap_info("ok\n");
991 } else {
992 #ifndef NO_IPV6
993 struct addrinfo hints, *ai0, *ai;
994 int gai;
995 char portstr[6];
996
997 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
998
999 memset(&hints, 0, sizeof(hints));
1000 hints.ai_socktype = SOCK_STREAM;
1001 hints.ai_protocol = IPPROTO_TCP;
1002
1003 imap_info("Resolving %s... ", srvc->host);
1004 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
1005 if (gai) {
1006 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
1007 goto bail;
1008 }
1009 imap_info("ok\n");
1010
1011 for (ai0 = ai; ai; ai = ai->ai_next) {
1012 char addr[NI_MAXHOST];
1013
1014 s = socket(ai->ai_family, ai->ai_socktype,
1015 ai->ai_protocol);
1016 if (s < 0)
1017 continue;
1018
1019 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1020 sizeof(addr), NULL, 0, NI_NUMERICHOST);
1021 imap_info("Connecting to [%s]:%s... ", addr, portstr);
1022
1023 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
1024 close(s);
1025 s = -1;
1026 perror("connect");
1027 continue;
1028 }
1029
1030 break;
1031 }
1032 freeaddrinfo(ai0);
1033 #else /* NO_IPV6 */
1034 struct hostent *he;
1035 struct sockaddr_in addr;
1036
1037 memset(&addr, 0, sizeof(addr));
1038 addr.sin_port = htons(srvc->port);
1039 addr.sin_family = AF_INET;
1040
1041 imap_info("Resolving %s... ", srvc->host);
1042 he = gethostbyname(srvc->host);
1043 if (!he) {
1044 perror("gethostbyname");
1045 goto bail;
1046 }
1047 imap_info("ok\n");
1048
1049 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1050
1051 s = socket(PF_INET, SOCK_STREAM, 0);
1052
1053 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1054 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1055 close(s);
1056 s = -1;
1057 perror("connect");
1058 }
1059 #endif
1060 if (s < 0) {
1061 fputs("Error: unable to connect to server.\n", stderr);
1062 goto bail;
1063 }
1064
1065 imap->buf.sock.fd[0] = s;
1066 imap->buf.sock.fd[1] = dup(s);
1067
1068 if (srvc->use_ssl &&
1069 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1070 close(s);
1071 goto bail;
1072 }
1073 imap_info("ok\n");
1074 }
1075
1076 /* read the greeting string */
1077 if (buffer_gets(&imap->buf, &rsp)) {
1078 fprintf(stderr, "IMAP error: no greeting response\n");
1079 goto bail;
1080 }
1081 arg = next_arg(&rsp);
1082 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1083 fprintf(stderr, "IMAP error: invalid greeting response\n");
1084 goto bail;
1085 }
1086 preauth = 0;
1087 if (!strcmp("PREAUTH", arg))
1088 preauth = 1;
1089 else if (strcmp("OK", arg) != 0) {
1090 fprintf(stderr, "IMAP error: unknown greeting response\n");
1091 goto bail;
1092 }
1093 parse_response_code(ctx, NULL, rsp);
1094 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1095 goto bail;
1096
1097 if (!preauth) {
1098 #ifndef NO_OPENSSL
1099 if (!srvc->use_ssl && CAP(STARTTLS)) {
1100 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1101 goto bail;
1102 if (ssl_socket_connect(&imap->buf.sock, 1,
1103 srvc->ssl_verify))
1104 goto bail;
1105 /* capabilities may have changed, so get the new capabilities */
1106 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1107 goto bail;
1108 }
1109 #endif
1110 imap_info("Logging in...\n");
1111 server_fill_credential(srvc, &cred);
1112
1113 if (srvc->auth_method) {
1114 struct imap_cmd_cb cb;
1115
1116 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1117 if (!CAP(AUTH_CRAM_MD5)) {
1118 fprintf(stderr, "You specified"
1119 "CRAM-MD5 as authentication method, "
1120 "but %s doesn't support it.\n", srvc->host);
1121 goto bail;
1122 }
1123 /* CRAM-MD5 */
1124
1125 memset(&cb, 0, sizeof(cb));
1126 cb.cont = auth_cram_md5;
1127 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1128 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1129 goto bail;
1130 }
1131 } else {
1132 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1133 goto bail;
1134 }
1135 } else {
1136 if (CAP(NOLOGIN)) {
1137 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1138 srvc->user, srvc->host);
1139 goto bail;
1140 }
1141 if (!imap->buf.sock.ssl)
1142 imap_warn("*** IMAP Warning *** Password is being "
1143 "sent in the clear\n");
1144 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1145 fprintf(stderr, "IMAP error: LOGIN failed\n");
1146 goto bail;
1147 }
1148 }
1149 } /* !preauth */
1150
1151 if (cred.username)
1152 credential_approve(&cred);
1153 credential_clear(&cred);
1154
1155 /* check the target mailbox exists */
1156 ctx->name = folder;
1157 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1158 case RESP_OK:
1159 /* ok */
1160 break;
1161 case RESP_BAD:
1162 fprintf(stderr, "IMAP error: could not check mailbox\n");
1163 goto out;
1164 case RESP_NO:
1165 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1166 imap_info("Created missing mailbox\n");
1167 } else {
1168 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1169 goto out;
1170 }
1171 break;
1172 }
1173
1174 ctx->prefix = "";
1175 return ctx;
1176
1177 bail:
1178 if (cred.username)
1179 credential_reject(&cred);
1180 credential_clear(&cred);
1181
1182 out:
1183 imap_close_store(ctx);
1184 return NULL;
1185 }
1186
1187 /*
1188 * Insert CR characters as necessary in *msg to ensure that every LF
1189 * character in *msg is preceded by a CR.
1190 */
1191 static void lf_to_crlf(struct strbuf *msg)
1192 {
1193 char *new;
1194 size_t i, j;
1195 char lastc;
1196
1197 /* First pass: tally, in j, the size of the new string: */
1198 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1199 if (msg->buf[i] == '\n' && lastc != '\r')
1200 j++; /* a CR will need to be added here */
1201 lastc = msg->buf[i];
1202 j++;
1203 }
1204
1205 new = xmallocz(j);
1206
1207 /*
1208 * Second pass: write the new string. Note that this loop is
1209 * otherwise identical to the first pass.
1210 */
1211 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1212 if (msg->buf[i] == '\n' && lastc != '\r')
1213 new[j++] = '\r';
1214 lastc = new[j++] = msg->buf[i];
1215 }
1216 strbuf_attach(msg, new, j, j + 1);
1217 }
1218
1219 /*
1220 * Store msg to IMAP. Also detach and free the data from msg->data,
1221 * leaving msg->data empty.
1222 */
1223 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1224 {
1225 struct imap *imap = ctx->imap;
1226 struct imap_cmd_cb cb;
1227 const char *prefix, *box;
1228 int ret;
1229
1230 lf_to_crlf(msg);
1231 memset(&cb, 0, sizeof(cb));
1232
1233 cb.dlen = msg->len;
1234 cb.data = strbuf_detach(msg, NULL);
1235
1236 box = ctx->name;
1237 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1238 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1239 imap->caps = imap->rcaps;
1240 if (ret != DRV_OK)
1241 return ret;
1242
1243 return DRV_OK;
1244 }
1245
1246 static void wrap_in_html(struct strbuf *msg)
1247 {
1248 struct strbuf buf = STRBUF_INIT;
1249 static char *content_type = "Content-Type: text/html;\n";
1250 static char *pre_open = "<pre>\n";
1251 static char *pre_close = "</pre>\n";
1252 const char *body = strstr(msg->buf, "\n\n");
1253
1254 if (!body)
1255 return; /* Headers but no body; no wrapping needed */
1256
1257 body += 2;
1258
1259 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1260 strbuf_addstr(&buf, content_type);
1261 strbuf_addch(&buf, '\n');
1262 strbuf_addstr(&buf, pre_open);
1263 strbuf_addstr_xml_quoted(&buf, body);
1264 strbuf_addstr(&buf, pre_close);
1265
1266 strbuf_release(msg);
1267 *msg = buf;
1268 }
1269
1270 #define CHUNKSIZE 0x1000
1271
1272 static int read_message(FILE *f, struct strbuf *all_msgs)
1273 {
1274 do {
1275 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1276 break;
1277 } while (!feof(f));
1278
1279 return ferror(f) ? -1 : 0;
1280 }
1281
1282 static int count_messages(struct strbuf *all_msgs)
1283 {
1284 int count = 0;
1285 char *p = all_msgs->buf;
1286
1287 while (1) {
1288 if (starts_with(p, "From ")) {
1289 p = strstr(p+5, "\nFrom: ");
1290 if (!p) break;
1291 p = strstr(p+7, "\nDate: ");
1292 if (!p) break;
1293 p = strstr(p+7, "\nSubject: ");
1294 if (!p) break;
1295 p += 10;
1296 count++;
1297 }
1298 p = strstr(p+5, "\nFrom ");
1299 if (!p)
1300 break;
1301 p++;
1302 }
1303 return count;
1304 }
1305
1306 /*
1307 * Copy the next message from all_msgs, starting at offset *ofs, to
1308 * msg. Update *ofs to the start of the following message. Return
1309 * true iff a message was successfully copied.
1310 */
1311 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1312 {
1313 char *p, *data;
1314 size_t len;
1315
1316 if (*ofs >= all_msgs->len)
1317 return 0;
1318
1319 data = &all_msgs->buf[*ofs];
1320 len = all_msgs->len - *ofs;
1321
1322 if (len < 5 || !starts_with(data, "From "))
1323 return 0;
1324
1325 p = strchr(data, '\n');
1326 if (p) {
1327 p++;
1328 len -= p - data;
1329 *ofs += p - data;
1330 data = p;
1331 }
1332
1333 p = strstr(data, "\nFrom ");
1334 if (p)
1335 len = &p[1] - data;
1336
1337 strbuf_add(msg, data, len);
1338 *ofs += len;
1339 return 1;
1340 }
1341
1342 static void git_imap_config(void)
1343 {
1344 const char *val = NULL;
1345
1346 git_config_get_bool("imap.sslverify", &server.ssl_verify);
1347 git_config_get_bool("imap.preformattedhtml", &server.use_html);
1348 git_config_get_string("imap.folder", &server.folder);
1349
1350 if (!git_config_get_value("imap.host", &val)) {
1351 if (!val) {
1352 git_die_config("imap.host", "Missing value for 'imap.host'");
1353 } else {
1354 if (starts_with(val, "imap:"))
1355 val += 5;
1356 else if (starts_with(val, "imaps:")) {
1357 val += 6;
1358 server.use_ssl = 1;
1359 }
1360 if (starts_with(val, "//"))
1361 val += 2;
1362 server.host = xstrdup(val);
1363 }
1364 }
1365
1366 git_config_get_string("imap.user", &server.user);
1367 git_config_get_string("imap.pass", &server.pass);
1368 git_config_get_int("imap.port", &server.port);
1369 git_config_get_string("imap.tunnel", &server.tunnel);
1370 git_config_get_string("imap.authmethod", &server.auth_method);
1371 }
1372
1373 static int append_msgs_to_imap(struct imap_server_conf *server,
1374 struct strbuf* all_msgs, int total)
1375 {
1376 struct strbuf msg = STRBUF_INIT;
1377 struct imap_store *ctx = NULL;
1378 int ofs = 0;
1379 int r;
1380 int n = 0;
1381
1382 ctx = imap_open_store(server, server->folder);
1383 if (!ctx) {
1384 fprintf(stderr, "failed to open store\n");
1385 return 1;
1386 }
1387 ctx->name = server->folder;
1388
1389 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1390 while (1) {
1391 unsigned percent = n * 100 / total;
1392
1393 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1394
1395 if (!split_msg(all_msgs, &msg, &ofs))
1396 break;
1397 if (server->use_html)
1398 wrap_in_html(&msg);
1399 r = imap_store_msg(ctx, &msg);
1400 if (r != DRV_OK)
1401 break;
1402 n++;
1403 }
1404 fprintf(stderr, "\n");
1405
1406 imap_close_store(ctx);
1407
1408 return 0;
1409 }
1410
1411 #ifdef USE_CURL_FOR_IMAP_SEND
1412 static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
1413 {
1414 CURL *curl;
1415 struct strbuf path = STRBUF_INIT;
1416
1417 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1418 die("curl_global_init failed");
1419
1420 curl = curl_easy_init();
1421
1422 if (!curl)
1423 die("curl_easy_init failed");
1424
1425 server_fill_credential(&server, cred);
1426 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1427 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1428
1429 strbuf_addstr(&path, server.use_ssl ? "imaps://" : "imap://");
1430 strbuf_addstr(&path, server.host);
1431 if (!path.len || path.buf[path.len - 1] != '/')
1432 strbuf_addch(&path, '/');
1433 strbuf_addstr(&path, server.folder);
1434
1435 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1436 strbuf_release(&path);
1437 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1438
1439 if (server.auth_method) {
1440 #if LIBCURL_VERSION_NUM < 0x072200
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, server.auth_method);
1446 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1447 strbuf_release(&auth);
1448 #endif
1449 }
1450
1451 if (!server.use_ssl)
1452 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1453
1454 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1455 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.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 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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 int ofs = 0;
1471 int n = 0;
1472 struct buffer msgbuf = { STRBUF_INIT, 0 };
1473 CURL *curl;
1474 CURLcode res = CURLE_OK;
1475 struct credential cred = CREDENTIAL_INIT;
1476
1477 curl = setup_curl(server, &cred);
1478 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1479
1480 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1481 while (1) {
1482 unsigned percent = n * 100 / total;
1483 int prev_len;
1484
1485 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1486
1487 prev_len = msgbuf.buf.len;
1488 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1489 break;
1490 if (server->use_html)
1491 wrap_in_html(&msgbuf.buf);
1492 lf_to_crlf(&msgbuf.buf);
1493
1494 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1495 (curl_off_t)(msgbuf.buf.len-prev_len));
1496
1497 res = curl_easy_perform(curl);
1498
1499 if(res != CURLE_OK) {
1500 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1501 curl_easy_strerror(res));
1502 break;
1503 }
1504
1505 n++;
1506 }
1507 fprintf(stderr, "\n");
1508
1509 curl_easy_cleanup(curl);
1510 curl_global_cleanup();
1511
1512 if (cred.username) {
1513 if (res == CURLE_OK)
1514 credential_approve(&cred);
1515 #if LIBCURL_VERSION_NUM >= 0x070d01
1516 else if (res == CURLE_LOGIN_DENIED)
1517 #else
1518 else
1519 #endif
1520 credential_reject(&cred);
1521 }
1522
1523 credential_clear(&cred);
1524
1525 return res != CURLE_OK;
1526 }
1527 #endif
1528
1529 int cmd_main(int argc, const char **argv)
1530 {
1531 struct strbuf all_msgs = STRBUF_INIT;
1532 int total;
1533 int nongit_ok;
1534
1535 setup_git_directory_gently(&nongit_ok);
1536 git_imap_config();
1537
1538 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1539
1540 if (argc)
1541 usage_with_options(imap_send_usage, imap_send_options);
1542
1543 #ifndef USE_CURL_FOR_IMAP_SEND
1544 if (use_curl) {
1545 warning("--curl not supported in this build");
1546 use_curl = 0;
1547 }
1548 #elif defined(NO_OPENSSL)
1549 if (!use_curl) {
1550 warning("--no-curl not supported in this build");
1551 use_curl = 1;
1552 }
1553 #endif
1554
1555 if (!server.port)
1556 server.port = server.use_ssl ? 993 : 143;
1557
1558 if (!server.folder) {
1559 fprintf(stderr, "no imap store specified\n");
1560 return 1;
1561 }
1562 if (!server.host) {
1563 if (!server.tunnel) {
1564 fprintf(stderr, "no imap host specified\n");
1565 return 1;
1566 }
1567 server.host = "tunnel";
1568 }
1569
1570 /* read the messages */
1571 if (read_message(stdin, &all_msgs)) {
1572 fprintf(stderr, "error reading input\n");
1573 return 1;
1574 }
1575
1576 if (all_msgs.len == 0) {
1577 fprintf(stderr, "nothing to send\n");
1578 return 1;
1579 }
1580
1581 total = count_messages(&all_msgs);
1582 if (!total) {
1583 fprintf(stderr, "no messages to send\n");
1584 return 1;
1585 }
1586
1587 /* write it to the imap server */
1588
1589 if (server.tunnel)
1590 return append_msgs_to_imap(&server, &all_msgs, total);
1591
1592 #ifdef USE_CURL_FOR_IMAP_SEND
1593 if (use_curl)
1594 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1595 #endif
1596
1597 return append_msgs_to_imap(&server, &all_msgs, total);
1598 }
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