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imap-send: check NULL return of SSL_CTX_new()
[git.git] / imap-send.c
blobe964e2a7fc9a824981d6f5f06d82d8fc11ddd00e
1 /*
2 * git-imap-send - drops patches into an imap Drafts folder
3 * derived from isync/mbsync - mailbox synchronizer
4 *
5 * Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
6 * Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
7 * Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
8 * Copyright (C) 2006 Mike McCormack
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25 #include "cache.h"
26 #include "credential.h"
27 #include "exec_cmd.h"
28 #include "run-command.h"
29 #include "parse-options.h"
30 #ifdef NO_OPENSSL
31 typedef void *SSL;
32 #endif
33 #ifdef USE_CURL_FOR_IMAP_SEND
34 #include "http.h"
35 #endif
36
37 #if defined(USE_CURL_FOR_IMAP_SEND) && defined(NO_OPENSSL)
38 /* only available option */
39 #define USE_CURL_DEFAULT 1
40 #else
41 /* strictly opt in */
42 #define USE_CURL_DEFAULT 0
43 #endif
44
45 static int verbosity;
46 static int use_curl = USE_CURL_DEFAULT;
47
48 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
49
50 static struct option imap_send_options[] = {
51 OPT__VERBOSITY(&verbosity),
52 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
53 OPT_END()
54 };
55
56 #undef DRV_OK
57 #define DRV_OK 0
58 #define DRV_MSG_BAD -1
59 #define DRV_BOX_BAD -2
60 #define DRV_STORE_BAD -3
61
62 __attribute__((format (printf, 1, 2)))
63 static void imap_info(const char *, ...);
64 __attribute__((format (printf, 1, 2)))
65 static void imap_warn(const char *, ...);
66
67 static char *next_arg(char **);
68
69 __attribute__((format (printf, 3, 4)))
70 static int nfsnprintf(char *buf, int blen, const char *fmt, ...);
71
72 static int nfvasprintf(char **strp, const char *fmt, va_list ap)
73 {
74 int len;
75 char tmp[8192];
76
77 len = vsnprintf(tmp, sizeof(tmp), fmt, ap);
78 if (len < 0)
79 die("Fatal: Out of memory");
80 if (len >= sizeof(tmp))
81 die("imap command overflow!");
82 *strp = xmemdupz(tmp, len);
83 return len;
84 }
85
86 struct imap_server_conf {
87 char *name;
88 char *tunnel;
89 char *host;
90 int port;
91 char *folder;
92 char *user;
93 char *pass;
94 int use_ssl;
95 int ssl_verify;
96 int use_html;
97 char *auth_method;
98 };
99
100 static struct imap_server_conf server = {
101 NULL, /* name */
102 NULL, /* tunnel */
103 NULL, /* host */
104 0, /* port */
105 NULL, /* folder */
106 NULL, /* user */
107 NULL, /* pass */
108 0, /* use_ssl */
109 1, /* ssl_verify */
110 0, /* use_html */
111 NULL, /* auth_method */
112 };
113
114 struct imap_socket {
115 int fd[2];
116 SSL *ssl;
117 };
118
119 struct imap_buffer {
120 struct imap_socket sock;
121 int bytes;
122 int offset;
123 char buf[1024];
124 };
125
126 struct imap_cmd;
127
128 struct imap {
129 int uidnext; /* from SELECT responses */
130 unsigned caps, rcaps; /* CAPABILITY results */
131 /* command queue */
132 int nexttag, num_in_progress, literal_pending;
133 struct imap_cmd *in_progress, **in_progress_append;
134 struct imap_buffer buf; /* this is BIG, so put it last */
135 };
136
137 struct imap_store {
138 /* currently open mailbox */
139 const char *name; /* foreign! maybe preset? */
140 int uidvalidity;
141 struct imap *imap;
142 const char *prefix;
143 };
144
145 struct imap_cmd_cb {
146 int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt);
147 void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response);
148 void *ctx;
149 char *data;
150 int dlen;
151 int uid;
152 };
153
154 struct imap_cmd {
155 struct imap_cmd *next;
156 struct imap_cmd_cb cb;
157 char *cmd;
158 int tag;
159 };
160
161 #define CAP(cap) (imap->caps & (1 << (cap)))
162
163 enum CAPABILITY {
164 NOLOGIN = 0,
165 UIDPLUS,
166 LITERALPLUS,
167 NAMESPACE,
168 STARTTLS,
169 AUTH_CRAM_MD5
170 };
171
172 static const char *cap_list[] = {
173 "LOGINDISABLED",
174 "UIDPLUS",
175 "LITERAL+",
176 "NAMESPACE",
177 "STARTTLS",
178 "AUTH=CRAM-MD5",
179 };
180
181 #define RESP_OK 0
182 #define RESP_NO 1
183 #define RESP_BAD 2
184
185 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
186
187
188 #ifndef NO_OPENSSL
189 static void ssl_socket_perror(const char *func)
190 {
191 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
192 }
193 #endif
194
195 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
196 {
197 #ifndef NO_OPENSSL
198 if (sock->ssl) {
199 int sslerr = SSL_get_error(sock->ssl, ret);
200 switch (sslerr) {
201 case SSL_ERROR_NONE:
202 break;
203 case SSL_ERROR_SYSCALL:
204 perror("SSL_connect");
205 break;
206 default:
207 ssl_socket_perror("SSL_connect");
208 break;
209 }
210 } else
211 #endif
212 {
213 if (ret < 0)
214 perror(func);
215 else
216 fprintf(stderr, "%s: unexpected EOF\n", func);
217 }
218 }
219
220 #ifdef NO_OPENSSL
221 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
222 {
223 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
224 return -1;
225 }
226
227 #else
228
229 static int host_matches(const char *host, const char *pattern)
230 {
231 if (pattern[0] == '*' && pattern[1] == '.') {
232 pattern += 2;
233 if (!(host = strchr(host, '.')))
234 return 0;
235 host++;
236 }
237
238 return *host && *pattern && !strcasecmp(host, pattern);
239 }
240
241 static int verify_hostname(X509 *cert, const char *hostname)
242 {
243 int len;
244 X509_NAME *subj;
245 char cname[1000];
246 int i, found;
247 STACK_OF(GENERAL_NAME) *subj_alt_names;
248
249 /* try the DNS subjectAltNames */
250 found = 0;
251 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
252 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
253 for (i = 0; !found && i < num_subj_alt_names; i++) {
254 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
255 if (subj_alt_name->type == GEN_DNS &&
256 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
257 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
258 found = 1;
259 }
260 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
261 }
262 if (found)
263 return 0;
264
265 /* try the common name */
266 if (!(subj = X509_get_subject_name(cert)))
267 return error("cannot get certificate subject");
268 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
269 return error("cannot get certificate common name");
270 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
271 return 0;
272 return error("certificate owner '%s' does not match hostname '%s'",
273 cname, hostname);
274 }
275
276 static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify)
277 {
278 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
279 const SSL_METHOD *meth;
280 #else
281 SSL_METHOD *meth;
282 #endif
283 SSL_CTX *ctx;
284 int ret;
285 X509 *cert;
286
287 SSL_library_init();
288 SSL_load_error_strings();
289
290 if (use_tls_only)
291 meth = TLSv1_method();
292 else
293 meth = SSLv23_method();
294
295 if (!meth) {
296 ssl_socket_perror("SSLv23_method");
297 return -1;
298 }
299
300 ctx = SSL_CTX_new(meth);
301 if (!ctx) {
302 ssl_socket_perror("SSL_CTX_new");
303 return -1;
304 }
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("Fatal: 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 != '[')
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 (!strcmp("UIDVALIDITY", arg)) {
697 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) {
698 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
699 return RESP_BAD;
700 }
701 } else if (!strcmp("UIDNEXT", arg)) {
702 if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) {
703 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
704 return RESP_BAD;
705 }
706 } else if (!strcmp("CAPABILITY", arg)) {
707 parse_capability(imap, s);
708 } else if (!strcmp("ALERT", arg)) {
709 /* RFC2060 says that these messages MUST be displayed
710 * to the user
711 */
712 for (; isspace((unsigned char)*p); p++);
713 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
714 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
715 if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) ||
716 !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) {
717 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
718 return RESP_BAD;
719 }
720 }
721 return RESP_OK;
722 }
723
724 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
725 {
726 struct imap *imap = ctx->imap;
727 struct imap_cmd *cmdp, **pcmdp;
728 char *cmd, *arg, *arg1;
729 int n, resp, resp2, tag;
730
731 for (;;) {
732 if (buffer_gets(&imap->buf, &cmd))
733 return RESP_BAD;
734
735 arg = next_arg(&cmd);
736 if (*arg == '*') {
737 arg = next_arg(&cmd);
738 if (!arg) {
739 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
740 return RESP_BAD;
741 }
742
743 if (!strcmp("NAMESPACE", arg)) {
744 /* rfc2342 NAMESPACE response. */
745 skip_list(&cmd); /* Personal mailboxes */
746 skip_list(&cmd); /* Others' mailboxes */
747 skip_list(&cmd); /* Shared mailboxes */
748 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
749 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
750 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
751 return resp;
752 } else if (!strcmp("CAPABILITY", arg)) {
753 parse_capability(imap, cmd);
754 } else if ((arg1 = next_arg(&cmd))) {
755 ; /*
756 * Unhandled response-data with at least two words.
757 * Ignore it.
758 *
759 * NEEDSWORK: Previously this case handled '<num> EXISTS'
760 * and '<num> RECENT' but as a probably-unintended side
761 * effect it ignores other unrecognized two-word
762 * responses. imap-send doesn't ever try to read
763 * messages or mailboxes these days, so consider
764 * eliminating this case.
765 */
766 } else {
767 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
768 return RESP_BAD;
769 }
770 } else if (!imap->in_progress) {
771 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
772 return RESP_BAD;
773 } else if (*arg == '+') {
774 /* This can happen only with the last command underway, as
775 it enforces a round-trip. */
776 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
777 offsetof(struct imap_cmd, next));
778 if (cmdp->cb.data) {
779 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
780 free(cmdp->cb.data);
781 cmdp->cb.data = NULL;
782 if (n != (int)cmdp->cb.dlen)
783 return RESP_BAD;
784 } else if (cmdp->cb.cont) {
785 if (cmdp->cb.cont(ctx, cmdp, cmd))
786 return RESP_BAD;
787 } else {
788 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
789 return RESP_BAD;
790 }
791 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
792 return RESP_BAD;
793 if (!cmdp->cb.cont)
794 imap->literal_pending = 0;
795 if (!tcmd)
796 return DRV_OK;
797 } else {
798 tag = atoi(arg);
799 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
800 if (cmdp->tag == tag)
801 goto gottag;
802 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
803 return RESP_BAD;
804 gottag:
805 if (!(*pcmdp = cmdp->next))
806 imap->in_progress_append = pcmdp;
807 imap->num_in_progress--;
808 if (cmdp->cb.cont || cmdp->cb.data)
809 imap->literal_pending = 0;
810 arg = next_arg(&cmd);
811 if (!strcmp("OK", arg))
812 resp = DRV_OK;
813 else {
814 if (!strcmp("NO", arg))
815 resp = RESP_NO;
816 else /*if (!strcmp("BAD", arg))*/
817 resp = RESP_BAD;
818 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
819 !starts_with(cmdp->cmd, "LOGIN") ?
820 cmdp->cmd : "LOGIN <user> <pass>",
821 arg, cmd ? cmd : "");
822 }
823 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
824 resp = resp2;
825 if (cmdp->cb.done)
826 cmdp->cb.done(ctx, cmdp, resp);
827 free(cmdp->cb.data);
828 free(cmdp->cmd);
829 free(cmdp);
830 if (!tcmd || tcmd == cmdp)
831 return resp;
832 }
833 }
834 /* not reached */
835 }
836
837 static void imap_close_server(struct imap_store *ictx)
838 {
839 struct imap *imap = ictx->imap;
840
841 if (imap->buf.sock.fd[0] != -1) {
842 imap_exec(ictx, NULL, "LOGOUT");
843 socket_shutdown(&imap->buf.sock);
844 }
845 free(imap);
846 }
847
848 static void imap_close_store(struct imap_store *ctx)
849 {
850 imap_close_server(ctx);
851 free(ctx);
852 }
853
854 #ifndef NO_OPENSSL
855
856 /*
857 * hexchar() and cram() functions are based on the code from the isync
858 * project (http://isync.sf.net/).
859 */
860 static char hexchar(unsigned int b)
861 {
862 return b < 10 ? '0' + b : 'a' + (b - 10);
863 }
864
865 #define ENCODED_SIZE(n) (4*((n+2)/3))
866 static char *cram(const char *challenge_64, const char *user, const char *pass)
867 {
868 int i, resp_len, encoded_len, decoded_len;
869 unsigned char hash[16];
870 char hex[33];
871 char *response, *response_64, *challenge;
872
873 /*
874 * length of challenge_64 (i.e. base-64 encoded string) is a good
875 * enough upper bound for challenge (decoded result).
876 */
877 encoded_len = strlen(challenge_64);
878 challenge = xmalloc(encoded_len);
879 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
880 (unsigned char *)challenge_64, encoded_len);
881 if (decoded_len < 0)
882 die("invalid challenge %s", challenge_64);
883 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
884 die("HMAC error");
885
886 hex[32] = 0;
887 for (i = 0; i < 16; i++) {
888 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
889 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
890 }
891
892 /* response: "<user> <digest in hex>" */
893 resp_len = strlen(user) + 1 + strlen(hex) + 1;
894 response = xmalloc(resp_len);
895 sprintf(response, "%s %s", user, hex);
896
897 response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1);
898 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
899 (unsigned char *)response, resp_len);
900 if (encoded_len < 0)
901 die("EVP_EncodeBlock error");
902 response_64[encoded_len] = '\0';
903 return (char *)response_64;
904 }
905
906 #else
907
908 static char *cram(const char *challenge_64, const char *user, const char *pass)
909 {
910 die("If you want to use CRAM-MD5 authenticate method, "
911 "you have to build git-imap-send with OpenSSL library.");
912 }
913
914 #endif
915
916 static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt)
917 {
918 int ret;
919 char *response;
920
921 response = cram(prompt, server.user, server.pass);
922
923 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
924 if (ret != strlen(response))
925 return error("IMAP error: sending response failed");
926
927 free(response);
928
929 return 0;
930 }
931
932 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, char *folder)
933 {
934 struct credential cred = CREDENTIAL_INIT;
935 struct imap_store *ctx;
936 struct imap *imap;
937 char *arg, *rsp;
938 int s = -1, preauth;
939
940 ctx = xcalloc(1, sizeof(*ctx));
941
942 ctx->imap = imap = xcalloc(1, sizeof(*imap));
943 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
944 imap->in_progress_append = &imap->in_progress;
945
946 /* open connection to IMAP server */
947
948 if (srvc->tunnel) {
949 struct child_process tunnel = CHILD_PROCESS_INIT;
950
951 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
952
953 argv_array_push(&tunnel.args, srvc->tunnel);
954 tunnel.use_shell = 1;
955 tunnel.in = -1;
956 tunnel.out = -1;
957 if (start_command(&tunnel))
958 die("cannot start proxy %s", srvc->tunnel);
959
960 imap->buf.sock.fd[0] = tunnel.out;
961 imap->buf.sock.fd[1] = tunnel.in;
962
963 imap_info("ok\n");
964 } else {
965 #ifndef NO_IPV6
966 struct addrinfo hints, *ai0, *ai;
967 int gai;
968 char portstr[6];
969
970 snprintf(portstr, sizeof(portstr), "%d", srvc->port);
971
972 memset(&hints, 0, sizeof(hints));
973 hints.ai_socktype = SOCK_STREAM;
974 hints.ai_protocol = IPPROTO_TCP;
975
976 imap_info("Resolving %s... ", srvc->host);
977 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
978 if (gai) {
979 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
980 goto bail;
981 }
982 imap_info("ok\n");
983
984 for (ai0 = ai; ai; ai = ai->ai_next) {
985 char addr[NI_MAXHOST];
986
987 s = socket(ai->ai_family, ai->ai_socktype,
988 ai->ai_protocol);
989 if (s < 0)
990 continue;
991
992 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
993 sizeof(addr), NULL, 0, NI_NUMERICHOST);
994 imap_info("Connecting to [%s]:%s... ", addr, portstr);
995
996 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
997 close(s);
998 s = -1;
999 perror("connect");
1000 continue;
1001 }
1002
1003 break;
1004 }
1005 freeaddrinfo(ai0);
1006 #else /* NO_IPV6 */
1007 struct hostent *he;
1008 struct sockaddr_in addr;
1009
1010 memset(&addr, 0, sizeof(addr));
1011 addr.sin_port = htons(srvc->port);
1012 addr.sin_family = AF_INET;
1013
1014 imap_info("Resolving %s... ", srvc->host);
1015 he = gethostbyname(srvc->host);
1016 if (!he) {
1017 perror("gethostbyname");
1018 goto bail;
1019 }
1020 imap_info("ok\n");
1021
1022 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1023
1024 s = socket(PF_INET, SOCK_STREAM, 0);
1025
1026 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1027 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1028 close(s);
1029 s = -1;
1030 perror("connect");
1031 }
1032 #endif
1033 if (s < 0) {
1034 fputs("Error: unable to connect to server.\n", stderr);
1035 goto bail;
1036 }
1037
1038 imap->buf.sock.fd[0] = s;
1039 imap->buf.sock.fd[1] = dup(s);
1040
1041 if (srvc->use_ssl &&
1042 ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) {
1043 close(s);
1044 goto bail;
1045 }
1046 imap_info("ok\n");
1047 }
1048
1049 /* read the greeting string */
1050 if (buffer_gets(&imap->buf, &rsp)) {
1051 fprintf(stderr, "IMAP error: no greeting response\n");
1052 goto bail;
1053 }
1054 arg = next_arg(&rsp);
1055 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1056 fprintf(stderr, "IMAP error: invalid greeting response\n");
1057 goto bail;
1058 }
1059 preauth = 0;
1060 if (!strcmp("PREAUTH", arg))
1061 preauth = 1;
1062 else if (strcmp("OK", arg) != 0) {
1063 fprintf(stderr, "IMAP error: unknown greeting response\n");
1064 goto bail;
1065 }
1066 parse_response_code(ctx, NULL, rsp);
1067 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1068 goto bail;
1069
1070 if (!preauth) {
1071 #ifndef NO_OPENSSL
1072 if (!srvc->use_ssl && CAP(STARTTLS)) {
1073 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1074 goto bail;
1075 if (ssl_socket_connect(&imap->buf.sock, 1,
1076 srvc->ssl_verify))
1077 goto bail;
1078 /* capabilities may have changed, so get the new capabilities */
1079 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1080 goto bail;
1081 }
1082 #endif
1083 imap_info("Logging in...\n");
1084 if (!srvc->user || !srvc->pass) {
1085 cred.protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
1086 cred.host = xstrdup(srvc->host);
1087
1088 if (srvc->user)
1089 cred.username = xstrdup(srvc->user);
1090 if (srvc->pass)
1091 cred.password = xstrdup(srvc->pass);
1092
1093 credential_fill(&cred);
1094
1095 if (!srvc->user)
1096 srvc->user = xstrdup(cred.username);
1097 if (!srvc->pass)
1098 srvc->pass = xstrdup(cred.password);
1099 }
1100
1101 if (CAP(NOLOGIN)) {
1102 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host);
1103 goto bail;
1104 }
1105
1106 if (srvc->auth_method) {
1107 struct imap_cmd_cb cb;
1108
1109 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1110 if (!CAP(AUTH_CRAM_MD5)) {
1111 fprintf(stderr, "You specified"
1112 "CRAM-MD5 as authentication method, "
1113 "but %s doesn't support it.\n", srvc->host);
1114 goto bail;
1115 }
1116 /* CRAM-MD5 */
1117
1118 memset(&cb, 0, sizeof(cb));
1119 cb.cont = auth_cram_md5;
1120 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1121 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1122 goto bail;
1123 }
1124 } else {
1125 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1126 goto bail;
1127 }
1128 } else {
1129 if (!imap->buf.sock.ssl)
1130 imap_warn("*** IMAP Warning *** Password is being "
1131 "sent in the clear\n");
1132 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1133 fprintf(stderr, "IMAP error: LOGIN failed\n");
1134 goto bail;
1135 }
1136 }
1137 } /* !preauth */
1138
1139 if (cred.username)
1140 credential_approve(&cred);
1141 credential_clear(&cred);
1142
1143 /* check the target mailbox exists */
1144 ctx->name = folder;
1145 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1146 case RESP_OK:
1147 /* ok */
1148 break;
1149 case RESP_BAD:
1150 fprintf(stderr, "IMAP error: could not check mailbox\n");
1151 goto out;
1152 case RESP_NO:
1153 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1154 imap_info("Created missing mailbox\n");
1155 } else {
1156 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1157 goto out;
1158 }
1159 break;
1160 }
1161
1162 ctx->prefix = "";
1163 return ctx;
1164
1165 bail:
1166 if (cred.username)
1167 credential_reject(&cred);
1168 credential_clear(&cred);
1169
1170 out:
1171 imap_close_store(ctx);
1172 return NULL;
1173 }
1174
1175 /*
1176 * Insert CR characters as necessary in *msg to ensure that every LF
1177 * character in *msg is preceded by a CR.
1178 */
1179 static void lf_to_crlf(struct strbuf *msg)
1180 {
1181 char *new;
1182 size_t i, j;
1183 char lastc;
1184
1185 /* First pass: tally, in j, the size of the new string: */
1186 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1187 if (msg->buf[i] == '\n' && lastc != '\r')
1188 j++; /* a CR will need to be added here */
1189 lastc = msg->buf[i];
1190 j++;
1191 }
1192
1193 new = xmalloc(j + 1);
1194
1195 /*
1196 * Second pass: write the new string. Note that this loop is
1197 * otherwise identical to the first pass.
1198 */
1199 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1200 if (msg->buf[i] == '\n' && lastc != '\r')
1201 new[j++] = '\r';
1202 lastc = new[j++] = msg->buf[i];
1203 }
1204 strbuf_attach(msg, new, j, j + 1);
1205 }
1206
1207 /*
1208 * Store msg to IMAP. Also detach and free the data from msg->data,
1209 * leaving msg->data empty.
1210 */
1211 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1212 {
1213 struct imap *imap = ctx->imap;
1214 struct imap_cmd_cb cb;
1215 const char *prefix, *box;
1216 int ret;
1217
1218 lf_to_crlf(msg);
1219 memset(&cb, 0, sizeof(cb));
1220
1221 cb.dlen = msg->len;
1222 cb.data = strbuf_detach(msg, NULL);
1223
1224 box = ctx->name;
1225 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1226 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1227 imap->caps = imap->rcaps;
1228 if (ret != DRV_OK)
1229 return ret;
1230
1231 return DRV_OK;
1232 }
1233
1234 static void wrap_in_html(struct strbuf *msg)
1235 {
1236 struct strbuf buf = STRBUF_INIT;
1237 static char *content_type = "Content-Type: text/html;\n";
1238 static char *pre_open = "<pre>\n";
1239 static char *pre_close = "</pre>\n";
1240 const char *body = strstr(msg->buf, "\n\n");
1241
1242 if (!body)
1243 return; /* Headers but no body; no wrapping needed */
1244
1245 body += 2;
1246
1247 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1248 strbuf_addstr(&buf, content_type);
1249 strbuf_addch(&buf, '\n');
1250 strbuf_addstr(&buf, pre_open);
1251 strbuf_addstr_xml_quoted(&buf, body);
1252 strbuf_addstr(&buf, pre_close);
1253
1254 strbuf_release(msg);
1255 *msg = buf;
1256 }
1257
1258 #define CHUNKSIZE 0x1000
1259
1260 static int read_message(FILE *f, struct strbuf *all_msgs)
1261 {
1262 do {
1263 if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0)
1264 break;
1265 } while (!feof(f));
1266
1267 return ferror(f) ? -1 : 0;
1268 }
1269
1270 static int count_messages(struct strbuf *all_msgs)
1271 {
1272 int count = 0;
1273 char *p = all_msgs->buf;
1274
1275 while (1) {
1276 if (starts_with(p, "From ")) {
1277 p = strstr(p+5, "\nFrom: ");
1278 if (!p) break;
1279 p = strstr(p+7, "\nDate: ");
1280 if (!p) break;
1281 p = strstr(p+7, "\nSubject: ");
1282 if (!p) break;
1283 p += 10;
1284 count++;
1285 }
1286 p = strstr(p+5, "\nFrom ");
1287 if (!p)
1288 break;
1289 p++;
1290 }
1291 return count;
1292 }
1293
1294 /*
1295 * Copy the next message from all_msgs, starting at offset *ofs, to
1296 * msg. Update *ofs to the start of the following message. Return
1297 * true iff a message was successfully copied.
1298 */
1299 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1300 {
1301 char *p, *data;
1302 size_t len;
1303
1304 if (*ofs >= all_msgs->len)
1305 return 0;
1306
1307 data = &all_msgs->buf[*ofs];
1308 len = all_msgs->len - *ofs;
1309
1310 if (len < 5 || !starts_with(data, "From "))
1311 return 0;
1312
1313 p = strchr(data, '\n');
1314 if (p) {
1315 p++;
1316 len -= p - data;
1317 *ofs += p - data;
1318 data = p;
1319 }
1320
1321 p = strstr(data, "\nFrom ");
1322 if (p)
1323 len = &p[1] - data;
1324
1325 strbuf_add(msg, data, len);
1326 *ofs += len;
1327 return 1;
1328 }
1329
1330 static void git_imap_config(void)
1331 {
1332 const char *val = NULL;
1333
1334 git_config_get_bool("imap.sslverify", &server.ssl_verify);
1335 git_config_get_bool("imap.preformattedhtml", &server.use_html);
1336 git_config_get_string("imap.folder", &server.folder);
1337
1338 if (!git_config_get_value("imap.host", &val)) {
1339 if (!val) {
1340 git_die_config("imap.host", "Missing value for 'imap.host'");
1341 } else {
1342 if (starts_with(val, "imap:"))
1343 val += 5;
1344 else if (starts_with(val, "imaps:")) {
1345 val += 6;
1346 server.use_ssl = 1;
1347 }
1348 if (starts_with(val, "//"))
1349 val += 2;
1350 server.host = xstrdup(val);
1351 }
1352 }
1353
1354 git_config_get_string("imap.user", &server.user);
1355 git_config_get_string("imap.pass", &server.pass);
1356 git_config_get_int("imap.port", &server.port);
1357 git_config_get_string("imap.tunnel", &server.tunnel);
1358 git_config_get_string("imap.authmethod", &server.auth_method);
1359 }
1360
1361 static int append_msgs_to_imap(struct imap_server_conf *server,
1362 struct strbuf* all_msgs, int total)
1363 {
1364 struct strbuf msg = STRBUF_INIT;
1365 struct imap_store *ctx = NULL;
1366 int ofs = 0;
1367 int r;
1368 int n = 0;
1369
1370 ctx = imap_open_store(server, server->folder);
1371 if (!ctx) {
1372 fprintf(stderr, "failed to open store\n");
1373 return 1;
1374 }
1375 ctx->name = server->folder;
1376
1377 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1378 while (1) {
1379 unsigned percent = n * 100 / total;
1380
1381 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1382
1383 if (!split_msg(all_msgs, &msg, &ofs))
1384 break;
1385 if (server->use_html)
1386 wrap_in_html(&msg);
1387 r = imap_store_msg(ctx, &msg);
1388 if (r != DRV_OK)
1389 break;
1390 n++;
1391 }
1392 fprintf(stderr, "\n");
1393
1394 imap_close_store(ctx);
1395
1396 return 0;
1397 }
1398
1399 #ifdef USE_CURL_FOR_IMAP_SEND
1400 static CURL *setup_curl(struct imap_server_conf *srvc)
1401 {
1402 CURL *curl;
1403 struct strbuf path = STRBUF_INIT;
1404
1405 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1406 die("curl_global_init failed");
1407
1408 curl = curl_easy_init();
1409
1410 if (!curl)
1411 die("curl_easy_init failed");
1412
1413 curl_easy_setopt(curl, CURLOPT_USERNAME, server.user);
1414 curl_easy_setopt(curl, CURLOPT_PASSWORD, server.pass);
1415
1416 strbuf_addstr(&path, server.host);
1417 if (!path.len || path.buf[path.len - 1] != '/')
1418 strbuf_addch(&path, '/');
1419 strbuf_addstr(&path, server.folder);
1420
1421 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1422 strbuf_release(&path);
1423 curl_easy_setopt(curl, CURLOPT_PORT, server.port);
1424
1425 if (server.auth_method) {
1426 #if LIBCURL_VERSION_NUM < 0x072200
1427 warning("No LOGIN_OPTIONS support in this cURL version");
1428 #else
1429 struct strbuf auth = STRBUF_INIT;
1430 strbuf_addstr(&auth, "AUTH=");
1431 strbuf_addstr(&auth, server.auth_method);
1432 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1433 strbuf_release(&auth);
1434 #endif
1435 }
1436
1437 if (!server.use_ssl)
1438 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1439
1440 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, server.ssl_verify);
1441 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, server.ssl_verify);
1442
1443 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1444
1445 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1446
1447 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1448 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1449
1450 return curl;
1451 }
1452
1453 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1454 struct strbuf* all_msgs, int total) {
1455 int ofs = 0;
1456 int n = 0;
1457 struct buffer msgbuf = { STRBUF_INIT, 0 };
1458 CURL *curl;
1459 CURLcode res = CURLE_OK;
1460
1461 curl = setup_curl(server);
1462 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1463
1464 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1465 while (1) {
1466 unsigned percent = n * 100 / total;
1467 int prev_len;
1468
1469 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1470
1471 prev_len = msgbuf.buf.len;
1472 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1473 break;
1474 if (server->use_html)
1475 wrap_in_html(&msgbuf.buf);
1476 lf_to_crlf(&msgbuf.buf);
1477
1478 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1479 (curl_off_t)(msgbuf.buf.len-prev_len));
1480
1481 res = curl_easy_perform(curl);
1482
1483 if(res != CURLE_OK) {
1484 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1485 curl_easy_strerror(res));
1486 break;
1487 }
1488
1489 n++;
1490 }
1491 fprintf(stderr, "\n");
1492
1493 curl_easy_cleanup(curl);
1494 curl_global_cleanup();
1495
1496 return 0;
1497 }
1498 #endif
1499
1500 int main(int argc, char **argv)
1501 {
1502 struct strbuf all_msgs = STRBUF_INIT;
1503 int total;
1504 int nongit_ok;
1505
1506 git_extract_argv0_path(argv[0]);
1507
1508 git_setup_gettext();
1509
1510 setup_git_directory_gently(&nongit_ok);
1511 git_imap_config();
1512
1513 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1514
1515 if (argc)
1516 usage_with_options(imap_send_usage, imap_send_options);
1517
1518 #ifndef USE_CURL_FOR_IMAP_SEND
1519 if (use_curl) {
1520 warning("--curl not supported in this build");
1521 use_curl = 0;
1522 }
1523 #elif defined(NO_OPENSSL)
1524 if (!use_curl) {
1525 warning("--no-curl not supported in this build");
1526 use_curl = 1;
1527 }
1528 #endif
1529
1530 if (!server.port)
1531 server.port = server.use_ssl ? 993 : 143;
1532
1533 if (!server.folder) {
1534 fprintf(stderr, "no imap store specified\n");
1535 return 1;
1536 }
1537 if (!server.host) {
1538 if (!server.tunnel) {
1539 fprintf(stderr, "no imap host specified\n");
1540 return 1;
1541 }
1542 server.host = "tunnel";
1543 }
1544
1545 /* read the messages */
1546 if (read_message(stdin, &all_msgs)) {
1547 fprintf(stderr, "error reading input\n");
1548 return 1;
1549 }
1550
1551 if (all_msgs.len == 0) {
1552 fprintf(stderr, "nothing to send\n");
1553 return 1;
1554 }
1555
1556 total = count_messages(&all_msgs);
1557 if (!total) {
1558 fprintf(stderr, "no messages to send\n");
1559 return 1;
1560 }
1561
1562 /* write it to the imap server */
1563
1564 if (server.tunnel)
1565 return append_msgs_to_imap(&server, &all_msgs, total);
1566
1567 #ifdef USE_CURL_FOR_IMAP_SEND
1568 if (use_curl)
1569 return curl_append_msgs_to_imap(&server, &all_msgs, total);
1570 #endif
1571
1572 return append_msgs_to_imap(&server, &all_msgs, total);
1573 }
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