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The seventh batch
[git.git] / imap-send.c
blob6c8f84e836bb4018d93520b6b5f96687c975d33a
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 <https://www.gnu.org/licenses/>.
22 */
23
24 #define USE_THE_REPOSITORY_VARIABLE
25 #define DISABLE_SIGN_COMPARE_WARNINGS
26
27 #include "git-compat-util.h"
28 #include "config.h"
29 #include "credential.h"
30 #include "gettext.h"
31 #include "run-command.h"
32 #include "parse-options.h"
33 #include "setup.h"
34 #include "strbuf.h"
35 #ifdef USE_CURL_FOR_IMAP_SEND
36 #include "http.h"
37 #endif
38
39 #if defined(USE_CURL_FOR_IMAP_SEND)
40 /* Always default to curl if it's available. */
41 #define USE_CURL_DEFAULT 1
42 #else
43 /* We don't have curl, so continue to use the historical implementation */
44 #define USE_CURL_DEFAULT 0
45 #endif
46
47 static int verbosity;
48 static int use_curl = USE_CURL_DEFAULT;
49
50 static const char * const imap_send_usage[] = { "git imap-send [-v] [-q] [--[no-]curl] < <mbox>", NULL };
51
52 static struct option imap_send_options[] = {
53 OPT__VERBOSITY(&verbosity),
54 OPT_BOOL(0, "curl", &use_curl, "use libcurl to communicate with the IMAP server"),
55 OPT_END()
56 };
57
58 #undef DRV_OK
59 #define DRV_OK 0
60 #define DRV_MSG_BAD -1
61 #define DRV_BOX_BAD -2
62 #define DRV_STORE_BAD -3
63
64 __attribute__((format (printf, 1, 2)))
65 static void imap_info(const char *, ...);
66 __attribute__((format (printf, 1, 2)))
67 static void imap_warn(const char *, ...);
68
69 static char *next_arg(char **);
70
71 struct imap_server_conf {
72 char *tunnel;
73 char *host;
74 int port;
75 char *folder;
76 char *user;
77 char *pass;
78 int use_ssl;
79 int ssl_verify;
80 int use_html;
81 char *auth_method;
82 };
83
84 struct imap_socket {
85 int fd[2];
86 #if defined(NO_OPENSSL) && !defined(HAVE_OPENSSL_CSPRNG)
87 void *ssl;
88 #else
89 SSL *ssl;
90 #endif
91 };
92
93 struct imap_buffer {
94 struct imap_socket sock;
95 int bytes;
96 int offset;
97 char buf[1024];
98 };
99
100 struct imap_cmd;
101
102 struct imap {
103 int uidnext; /* from SELECT responses */
104 unsigned caps, rcaps; /* CAPABILITY results */
105 /* command queue */
106 int nexttag, num_in_progress, literal_pending;
107 struct imap_cmd *in_progress, **in_progress_append;
108 struct imap_buffer buf; /* this is BIG, so put it last */
109 };
110
111 struct imap_store {
112 const struct imap_server_conf *cfg;
113 /* currently open mailbox */
114 const char *name; /* foreign! maybe preset? */
115 int uidvalidity;
116 struct imap *imap;
117 const char *prefix;
118 };
119
120 struct imap_cmd_cb {
121 int (*cont)(struct imap_store *ctx, const char *prompt);
122 void *ctx;
123 char *data;
124 int dlen;
125 };
126
127 struct imap_cmd {
128 struct imap_cmd *next;
129 struct imap_cmd_cb cb;
130 char *cmd;
131 int tag;
132 };
133
134 #define CAP(cap) (imap->caps & (1 << (cap)))
135
136 enum CAPABILITY {
137 NOLOGIN = 0,
138 UIDPLUS,
139 LITERALPLUS,
140 NAMESPACE,
141 STARTTLS,
142 AUTH_CRAM_MD5
143 };
144
145 static const char *cap_list[] = {
146 "LOGINDISABLED",
147 "UIDPLUS",
148 "LITERAL+",
149 "NAMESPACE",
150 "STARTTLS",
151 "AUTH=CRAM-MD5",
152 };
153
154 #define RESP_OK 0
155 #define RESP_NO 1
156 #define RESP_BAD 2
157
158 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd);
159
160
161 #ifndef NO_OPENSSL
162 static void ssl_socket_perror(const char *func)
163 {
164 fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL));
165 }
166 #endif
167
168 static void socket_perror(const char *func, struct imap_socket *sock, int ret)
169 {
170 #ifndef NO_OPENSSL
171 if (sock->ssl) {
172 int sslerr = SSL_get_error(sock->ssl, ret);
173 switch (sslerr) {
174 case SSL_ERROR_NONE:
175 break;
176 case SSL_ERROR_SYSCALL:
177 perror("SSL_connect");
178 break;
179 default:
180 ssl_socket_perror("SSL_connect");
181 break;
182 }
183 } else
184 #endif
185 {
186 if (ret < 0)
187 perror(func);
188 else
189 fprintf(stderr, "%s: unexpected EOF\n", func);
190 }
191 /* mark as used to appease -Wunused-parameter with NO_OPENSSL */
192 (void)sock;
193 }
194
195 #ifdef NO_OPENSSL
196 static int ssl_socket_connect(struct imap_socket *sock UNUSED,
197 const struct imap_server_conf *cfg UNUSED,
198 int use_tls_only UNUSED)
199 {
200 fprintf(stderr, "SSL requested but SSL support not compiled in\n");
201 return -1;
202 }
203
204 #else
205
206 static int host_matches(const char *host, const char *pattern)
207 {
208 if (pattern[0] == '*' && pattern[1] == '.') {
209 pattern += 2;
210 if (!(host = strchr(host, '.')))
211 return 0;
212 host++;
213 }
214
215 return *host && *pattern && !strcasecmp(host, pattern);
216 }
217
218 static int verify_hostname(X509 *cert, const char *hostname)
219 {
220 int len;
221 X509_NAME *subj;
222 char cname[1000];
223 int i, found;
224 STACK_OF(GENERAL_NAME) *subj_alt_names;
225
226 /* try the DNS subjectAltNames */
227 found = 0;
228 if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) {
229 int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names);
230 for (i = 0; !found && i < num_subj_alt_names; i++) {
231 GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i);
232 if (subj_alt_name->type == GEN_DNS &&
233 strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length &&
234 host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data)))
235 found = 1;
236 }
237 sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free);
238 }
239 if (found)
240 return 0;
241
242 /* try the common name */
243 if (!(subj = X509_get_subject_name(cert)))
244 return error("cannot get certificate subject");
245 if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0)
246 return error("cannot get certificate common name");
247 if (strlen(cname) == (size_t)len && host_matches(hostname, cname))
248 return 0;
249 return error("certificate owner '%s' does not match hostname '%s'",
250 cname, hostname);
251 }
252
253 static int ssl_socket_connect(struct imap_socket *sock,
254 const struct imap_server_conf *cfg,
255 int use_tls_only)
256 {
257 #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
258 const SSL_METHOD *meth;
259 #else
260 SSL_METHOD *meth;
261 #endif
262 SSL_CTX *ctx;
263 int ret;
264 X509 *cert;
265
266 SSL_library_init();
267 SSL_load_error_strings();
268
269 meth = SSLv23_method();
270 if (!meth) {
271 ssl_socket_perror("SSLv23_method");
272 return -1;
273 }
274
275 ctx = SSL_CTX_new(meth);
276 if (!ctx) {
277 ssl_socket_perror("SSL_CTX_new");
278 return -1;
279 }
280
281 if (use_tls_only)
282 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3);
283
284 if (cfg->ssl_verify)
285 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
286
287 if (!SSL_CTX_set_default_verify_paths(ctx)) {
288 ssl_socket_perror("SSL_CTX_set_default_verify_paths");
289 return -1;
290 }
291 sock->ssl = SSL_new(ctx);
292 if (!sock->ssl) {
293 ssl_socket_perror("SSL_new");
294 return -1;
295 }
296 if (!SSL_set_rfd(sock->ssl, sock->fd[0])) {
297 ssl_socket_perror("SSL_set_rfd");
298 return -1;
299 }
300 if (!SSL_set_wfd(sock->ssl, sock->fd[1])) {
301 ssl_socket_perror("SSL_set_wfd");
302 return -1;
303 }
304
305 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
306 /*
307 * SNI (RFC4366)
308 * OpenSSL does not document this function, but the implementation
309 * returns 1 on success, 0 on failure after calling SSLerr().
310 */
311 ret = SSL_set_tlsext_host_name(sock->ssl, cfg->host);
312 if (ret != 1)
313 warning("SSL_set_tlsext_host_name(%s) failed.", cfg->host);
314 #endif
315
316 ret = SSL_connect(sock->ssl);
317 if (ret <= 0) {
318 socket_perror("SSL_connect", sock, ret);
319 return -1;
320 }
321
322 if (cfg->ssl_verify) {
323 /* make sure the hostname matches that of the certificate */
324 cert = SSL_get_peer_certificate(sock->ssl);
325 if (!cert)
326 return error("unable to get peer certificate.");
327 if (verify_hostname(cert, cfg->host) < 0)
328 return -1;
329 }
330
331 return 0;
332 }
333 #endif
334
335 static int socket_read(struct imap_socket *sock, char *buf, int len)
336 {
337 ssize_t n;
338 #ifndef NO_OPENSSL
339 if (sock->ssl)
340 n = SSL_read(sock->ssl, buf, len);
341 else
342 #endif
343 n = xread(sock->fd[0], buf, len);
344 if (n <= 0) {
345 socket_perror("read", sock, n);
346 close(sock->fd[0]);
347 close(sock->fd[1]);
348 sock->fd[0] = sock->fd[1] = -1;
349 }
350 return n;
351 }
352
353 static int socket_write(struct imap_socket *sock, const char *buf, int len)
354 {
355 int n;
356 #ifndef NO_OPENSSL
357 if (sock->ssl)
358 n = SSL_write(sock->ssl, buf, len);
359 else
360 #endif
361 n = write_in_full(sock->fd[1], buf, len);
362 if (n != len) {
363 socket_perror("write", sock, n);
364 close(sock->fd[0]);
365 close(sock->fd[1]);
366 sock->fd[0] = sock->fd[1] = -1;
367 }
368 return n;
369 }
370
371 static void socket_shutdown(struct imap_socket *sock)
372 {
373 #ifndef NO_OPENSSL
374 if (sock->ssl) {
375 SSL_shutdown(sock->ssl);
376 SSL_free(sock->ssl);
377 }
378 #endif
379 close(sock->fd[0]);
380 close(sock->fd[1]);
381 }
382
383 /* simple line buffering */
384 static int buffer_gets(struct imap_buffer *b, char **s)
385 {
386 int n;
387 int start = b->offset;
388
389 *s = b->buf + start;
390
391 for (;;) {
392 /* make sure we have enough data to read the \r\n sequence */
393 if (b->offset + 1 >= b->bytes) {
394 if (start) {
395 /* shift down used bytes */
396 *s = b->buf;
397
398 assert(start <= b->bytes);
399 n = b->bytes - start;
400
401 if (n)
402 memmove(b->buf, b->buf + start, n);
403 b->offset -= start;
404 b->bytes = n;
405 start = 0;
406 }
407
408 n = socket_read(&b->sock, b->buf + b->bytes,
409 sizeof(b->buf) - b->bytes);
410
411 if (n <= 0)
412 return -1;
413
414 b->bytes += n;
415 }
416
417 if (b->buf[b->offset] == '\r') {
418 assert(b->offset + 1 < b->bytes);
419 if (b->buf[b->offset + 1] == '\n') {
420 b->buf[b->offset] = 0; /* terminate the string */
421 b->offset += 2; /* next line */
422 if (0 < verbosity)
423 puts(*s);
424 return 0;
425 }
426 }
427
428 b->offset++;
429 }
430 /* not reached */
431 }
432
433 __attribute__((format (printf, 1, 2)))
434 static void imap_info(const char *msg, ...)
435 {
436 va_list va;
437
438 if (0 <= verbosity) {
439 va_start(va, msg);
440 vprintf(msg, va);
441 va_end(va);
442 fflush(stdout);
443 }
444 }
445
446 __attribute__((format (printf, 1, 2)))
447 static void imap_warn(const char *msg, ...)
448 {
449 va_list va;
450
451 if (-2 < verbosity) {
452 va_start(va, msg);
453 vfprintf(stderr, msg, va);
454 va_end(va);
455 }
456 }
457
458 static char *next_arg(char **s)
459 {
460 char *ret;
461
462 if (!s || !*s)
463 return NULL;
464 while (isspace((unsigned char) **s))
465 (*s)++;
466 if (!**s) {
467 *s = NULL;
468 return NULL;
469 }
470 if (**s == '"') {
471 ++*s;
472 ret = *s;
473 *s = strchr(*s, '"');
474 } else {
475 ret = *s;
476 while (**s && !isspace((unsigned char) **s))
477 (*s)++;
478 }
479 if (*s) {
480 if (**s)
481 *(*s)++ = 0;
482 if (!**s)
483 *s = NULL;
484 }
485 return ret;
486 }
487
488 static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx,
489 struct imap_cmd_cb *cb,
490 const char *fmt, va_list ap)
491 {
492 struct imap *imap = ctx->imap;
493 struct imap_cmd *cmd;
494 int n;
495 struct strbuf buf = STRBUF_INIT;
496
497 cmd = xmalloc(sizeof(struct imap_cmd));
498 cmd->cmd = xstrvfmt(fmt, ap);
499 cmd->tag = ++imap->nexttag;
500
501 if (cb)
502 cmd->cb = *cb;
503 else
504 memset(&cmd->cb, 0, sizeof(cmd->cb));
505
506 while (imap->literal_pending)
507 get_cmd_result(ctx, NULL);
508
509 if (!cmd->cb.data)
510 strbuf_addf(&buf, "%d %s\r\n", cmd->tag, cmd->cmd);
511 else
512 strbuf_addf(&buf, "%d %s{%d%s}\r\n", cmd->tag, cmd->cmd,
513 cmd->cb.dlen, CAP(LITERALPLUS) ? "+" : "");
514 if (buf.len > INT_MAX)
515 die("imap command overflow!");
516
517 if (0 < verbosity) {
518 if (imap->num_in_progress)
519 printf("(%d in progress) ", imap->num_in_progress);
520 if (!starts_with(cmd->cmd, "LOGIN"))
521 printf(">>> %s", buf.buf);
522 else
523 printf(">>> %d LOGIN <user> <pass>\n", cmd->tag);
524 }
525 if (socket_write(&imap->buf.sock, buf.buf, buf.len) != buf.len) {
526 free(cmd->cmd);
527 free(cmd);
528 if (cb)
529 free(cb->data);
530 strbuf_release(&buf);
531 return NULL;
532 }
533 strbuf_release(&buf);
534 if (cmd->cb.data) {
535 if (CAP(LITERALPLUS)) {
536 n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen);
537 free(cmd->cb.data);
538 if (n != cmd->cb.dlen ||
539 socket_write(&imap->buf.sock, "\r\n", 2) != 2) {
540 free(cmd->cmd);
541 free(cmd);
542 return NULL;
543 }
544 cmd->cb.data = NULL;
545 } else
546 imap->literal_pending = 1;
547 } else if (cmd->cb.cont)
548 imap->literal_pending = 1;
549 cmd->next = NULL;
550 *imap->in_progress_append = cmd;
551 imap->in_progress_append = &cmd->next;
552 imap->num_in_progress++;
553 return cmd;
554 }
555
556 __attribute__((format (printf, 3, 4)))
557 static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb,
558 const char *fmt, ...)
559 {
560 va_list ap;
561 struct imap_cmd *cmdp;
562
563 va_start(ap, fmt);
564 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
565 va_end(ap);
566 if (!cmdp)
567 return RESP_BAD;
568
569 return get_cmd_result(ctx, cmdp);
570 }
571
572 __attribute__((format (printf, 3, 4)))
573 static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb,
574 const char *fmt, ...)
575 {
576 va_list ap;
577 struct imap_cmd *cmdp;
578
579 va_start(ap, fmt);
580 cmdp = issue_imap_cmd(ctx, cb, fmt, ap);
581 va_end(ap);
582 if (!cmdp)
583 return DRV_STORE_BAD;
584
585 switch (get_cmd_result(ctx, cmdp)) {
586 case RESP_BAD: return DRV_STORE_BAD;
587 case RESP_NO: return DRV_MSG_BAD;
588 default: return DRV_OK;
589 }
590 }
591
592 static int skip_imap_list_l(char **sp, int level)
593 {
594 char *s = *sp;
595
596 for (;;) {
597 while (isspace((unsigned char)*s))
598 s++;
599 if (level && *s == ')') {
600 s++;
601 break;
602 }
603 if (*s == '(') {
604 /* sublist */
605 s++;
606 if (skip_imap_list_l(&s, level + 1))
607 goto bail;
608 } else if (*s == '"') {
609 /* quoted string */
610 s++;
611 for (; *s != '"'; s++)
612 if (!*s)
613 goto bail;
614 s++;
615 } else {
616 /* atom */
617 for (; *s && !isspace((unsigned char)*s); s++)
618 if (level && *s == ')')
619 break;
620 }
621
622 if (!level)
623 break;
624 if (!*s)
625 goto bail;
626 }
627 *sp = s;
628 return 0;
629
630 bail:
631 return -1;
632 }
633
634 static void skip_list(char **sp)
635 {
636 skip_imap_list_l(sp, 0);
637 }
638
639 static void parse_capability(struct imap *imap, char *cmd)
640 {
641 char *arg;
642 unsigned i;
643
644 imap->caps = 0x80000000;
645 while ((arg = next_arg(&cmd)))
646 for (i = 0; i < ARRAY_SIZE(cap_list); i++)
647 if (!strcmp(cap_list[i], arg))
648 imap->caps |= 1 << i;
649 imap->rcaps = imap->caps;
650 }
651
652 static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb,
653 char *s)
654 {
655 struct imap *imap = ctx->imap;
656 char *arg, *p;
657
658 if (!s || *s != '[')
659 return RESP_OK; /* no response code */
660 s++;
661 if (!(p = strchr(s, ']'))) {
662 fprintf(stderr, "IMAP error: malformed response code\n");
663 return RESP_BAD;
664 }
665 *p++ = 0;
666 arg = next_arg(&s);
667 if (!arg) {
668 fprintf(stderr, "IMAP error: empty response code\n");
669 return RESP_BAD;
670 }
671 if (!strcmp("UIDVALIDITY", arg)) {
672 if (!(arg = next_arg(&s)) || strtol_i(arg, 10, &ctx->uidvalidity) || !ctx->uidvalidity) {
673 fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n");
674 return RESP_BAD;
675 }
676 } else if (!strcmp("UIDNEXT", arg)) {
677 if (!(arg = next_arg(&s)) || strtol_i(arg, 10, &imap->uidnext) || !imap->uidnext) {
678 fprintf(stderr, "IMAP error: malformed NEXTUID status\n");
679 return RESP_BAD;
680 }
681 } else if (!strcmp("CAPABILITY", arg)) {
682 parse_capability(imap, s);
683 } else if (!strcmp("ALERT", arg)) {
684 /* RFC2060 says that these messages MUST be displayed
685 * to the user
686 */
687 for (; isspace((unsigned char)*p); p++);
688 fprintf(stderr, "*** IMAP ALERT *** %s\n", p);
689 } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) {
690 if (!(arg = next_arg(&s)) || strtol_i(arg, 10, &ctx->uidvalidity) || !ctx->uidvalidity ||
691 !(arg = next_arg(&s)) || strtol_i(arg, 10, (int *)cb->ctx) || !cb->ctx) {
692 fprintf(stderr, "IMAP error: malformed APPENDUID status\n");
693 return RESP_BAD;
694 }
695 }
696 return RESP_OK;
697 }
698
699 static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd)
700 {
701 struct imap *imap = ctx->imap;
702 struct imap_cmd *cmdp, **pcmdp;
703 char *cmd;
704 const char *arg, *arg1;
705 int n, resp, resp2, tag;
706
707 for (;;) {
708 if (buffer_gets(&imap->buf, &cmd))
709 return RESP_BAD;
710
711 arg = next_arg(&cmd);
712 if (!arg) {
713 fprintf(stderr, "IMAP error: empty response\n");
714 return RESP_BAD;
715 }
716 if (*arg == '*') {
717 arg = next_arg(&cmd);
718 if (!arg) {
719 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
720 return RESP_BAD;
721 }
722
723 if (!strcmp("NAMESPACE", arg)) {
724 /* rfc2342 NAMESPACE response. */
725 skip_list(&cmd); /* Personal mailboxes */
726 skip_list(&cmd); /* Others' mailboxes */
727 skip_list(&cmd); /* Shared mailboxes */
728 } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) ||
729 !strcmp("NO", arg) || !strcmp("BYE", arg)) {
730 if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK)
731 return resp;
732 } else if (!strcmp("CAPABILITY", arg)) {
733 parse_capability(imap, cmd);
734 } else if ((arg1 = next_arg(&cmd))) {
735 ; /*
736 * Unhandled response-data with at least two words.
737 * Ignore it.
738 *
739 * NEEDSWORK: Previously this case handled '<num> EXISTS'
740 * and '<num> RECENT' but as a probably-unintended side
741 * effect it ignores other unrecognized two-word
742 * responses. imap-send doesn't ever try to read
743 * messages or mailboxes these days, so consider
744 * eliminating this case.
745 */
746 } else {
747 fprintf(stderr, "IMAP error: unable to parse untagged response\n");
748 return RESP_BAD;
749 }
750 } else if (!imap->in_progress) {
751 fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "");
752 return RESP_BAD;
753 } else if (*arg == '+') {
754 /* This can happen only with the last command underway, as
755 it enforces a round-trip. */
756 cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
757 offsetof(struct imap_cmd, next));
758 if (cmdp->cb.data) {
759 n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen);
760 FREE_AND_NULL(cmdp->cb.data);
761 if (n != (int)cmdp->cb.dlen)
762 return RESP_BAD;
763 } else if (cmdp->cb.cont) {
764 if (cmdp->cb.cont(ctx, cmd))
765 return RESP_BAD;
766 } else {
767 fprintf(stderr, "IMAP error: unexpected command continuation request\n");
768 return RESP_BAD;
769 }
770 if (socket_write(&imap->buf.sock, "\r\n", 2) != 2)
771 return RESP_BAD;
772 if (!cmdp->cb.cont)
773 imap->literal_pending = 0;
774 if (!tcmd)
775 return DRV_OK;
776 } else {
777 if (strtol_i(arg, 10, &tag)) {
778 fprintf(stderr, "IMAP error: malformed tag %s\n", arg);
779 return RESP_BAD;
780 }
781 for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
782 if (cmdp->tag == tag)
783 goto gottag;
784 fprintf(stderr, "IMAP error: unexpected tag %s\n", arg);
785 return RESP_BAD;
786 gottag:
787 if (!(*pcmdp = cmdp->next))
788 imap->in_progress_append = pcmdp;
789 imap->num_in_progress--;
790 if (cmdp->cb.cont || cmdp->cb.data)
791 imap->literal_pending = 0;
792 arg = next_arg(&cmd);
793 if (!arg)
794 arg = "";
795 if (!strcmp("OK", arg))
796 resp = DRV_OK;
797 else {
798 if (!strcmp("NO", arg))
799 resp = RESP_NO;
800 else /*if (!strcmp("BAD", arg))*/
801 resp = RESP_BAD;
802 fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n",
803 !starts_with(cmdp->cmd, "LOGIN") ?
804 cmdp->cmd : "LOGIN <user> <pass>",
805 arg, cmd ? cmd : "");
806 }
807 if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp)
808 resp = resp2;
809 free(cmdp->cb.data);
810 free(cmdp->cmd);
811 free(cmdp);
812 if (!tcmd || tcmd == cmdp)
813 return resp;
814 }
815 }
816 /* not reached */
817 }
818
819 static void imap_close_server(struct imap_store *ictx)
820 {
821 struct imap *imap = ictx->imap;
822
823 if (imap->buf.sock.fd[0] != -1) {
824 imap_exec(ictx, NULL, "LOGOUT");
825 socket_shutdown(&imap->buf.sock);
826 }
827 free(imap);
828 }
829
830 static void imap_close_store(struct imap_store *ctx)
831 {
832 imap_close_server(ctx);
833 free(ctx);
834 }
835
836 #ifndef NO_OPENSSL
837
838 /*
839 * hexchar() and cram() functions are based on the code from the isync
840 * project (https://isync.sourceforge.io/).
841 */
842 static char hexchar(unsigned int b)
843 {
844 return b < 10 ? '0' + b : 'a' + (b - 10);
845 }
846
847 #define ENCODED_SIZE(n) (4 * DIV_ROUND_UP((n), 3))
848 static char *cram(const char *challenge_64, const char *user, const char *pass)
849 {
850 int i, resp_len, encoded_len, decoded_len;
851 unsigned char hash[16];
852 char hex[33];
853 char *response, *response_64, *challenge;
854
855 /*
856 * length of challenge_64 (i.e. base-64 encoded string) is a good
857 * enough upper bound for challenge (decoded result).
858 */
859 encoded_len = strlen(challenge_64);
860 challenge = xmalloc(encoded_len);
861 decoded_len = EVP_DecodeBlock((unsigned char *)challenge,
862 (unsigned char *)challenge_64, encoded_len);
863 if (decoded_len < 0)
864 die("invalid challenge %s", challenge_64);
865 if (!HMAC(EVP_md5(), pass, strlen(pass), (unsigned char *)challenge, decoded_len, hash, NULL))
866 die("HMAC error");
867
868 hex[32] = 0;
869 for (i = 0; i < 16; i++) {
870 hex[2 * i] = hexchar((hash[i] >> 4) & 0xf);
871 hex[2 * i + 1] = hexchar(hash[i] & 0xf);
872 }
873
874 /* response: "<user> <digest in hex>" */
875 response = xstrfmt("%s %s", user, hex);
876 resp_len = strlen(response);
877
878 response_64 = xmallocz(ENCODED_SIZE(resp_len));
879 encoded_len = EVP_EncodeBlock((unsigned char *)response_64,
880 (unsigned char *)response, resp_len);
881 if (encoded_len < 0)
882 die("EVP_EncodeBlock error");
883 return (char *)response_64;
884 }
885
886 #else
887
888 static char *cram(const char *challenge_64 UNUSED,
889 const char *user UNUSED,
890 const char *pass UNUSED)
891 {
892 die("If you want to use CRAM-MD5 authenticate method, "
893 "you have to build git-imap-send with OpenSSL library.");
894 }
895
896 #endif
897
898 static int auth_cram_md5(struct imap_store *ctx, const char *prompt)
899 {
900 int ret;
901 char *response;
902
903 response = cram(prompt, ctx->cfg->user, ctx->cfg->pass);
904
905 ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
906 if (ret != strlen(response))
907 return error("IMAP error: sending response failed");
908
909 free(response);
910
911 return 0;
912 }
913
914 static void server_fill_credential(struct imap_server_conf *srvc, struct credential *cred)
915 {
916 if (srvc->user && srvc->pass)
917 return;
918
919 cred->protocol = xstrdup(srvc->use_ssl ? "imaps" : "imap");
920 cred->host = xstrdup(srvc->host);
921
922 cred->username = xstrdup_or_null(srvc->user);
923 cred->password = xstrdup_or_null(srvc->pass);
924
925 credential_fill(the_repository, cred, 1);
926
927 if (!srvc->user)
928 srvc->user = xstrdup(cred->username);
929 if (!srvc->pass)
930 srvc->pass = xstrdup(cred->password);
931 }
932
933 static struct imap_store *imap_open_store(struct imap_server_conf *srvc, const char *folder)
934 {
935 struct credential cred = CREDENTIAL_INIT;
936 struct imap_store *ctx;
937 struct imap *imap;
938 char *arg, *rsp;
939 int s = -1, preauth;
940
941 CALLOC_ARRAY(ctx, 1);
942
943 ctx->cfg = srvc;
944 ctx->imap = CALLOC_ARRAY(imap, 1);
945 imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1;
946 imap->in_progress_append = &imap->in_progress;
947
948 /* open connection to IMAP server */
949
950 if (srvc->tunnel) {
951 struct child_process tunnel = CHILD_PROCESS_INIT;
952
953 imap_info("Starting tunnel '%s'... ", srvc->tunnel);
954
955 strvec_push(&tunnel.args, srvc->tunnel);
956 tunnel.use_shell = 1;
957 tunnel.in = -1;
958 tunnel.out = -1;
959 if (start_command(&tunnel))
960 die("cannot start proxy %s", srvc->tunnel);
961
962 imap->buf.sock.fd[0] = tunnel.out;
963 imap->buf.sock.fd[1] = tunnel.in;
964
965 imap_info("ok\n");
966 } else {
967 #ifndef NO_IPV6
968 struct addrinfo hints, *ai0, *ai;
969 int gai;
970 char portstr[6];
971
972 xsnprintf(portstr, sizeof(portstr), "%d", srvc->port);
973
974 memset(&hints, 0, sizeof(hints));
975 hints.ai_socktype = SOCK_STREAM;
976 hints.ai_protocol = IPPROTO_TCP;
977
978 imap_info("Resolving %s... ", srvc->host);
979 gai = getaddrinfo(srvc->host, portstr, &hints, &ai);
980 if (gai) {
981 fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai));
982 goto bail;
983 }
984 imap_info("ok\n");
985
986 for (ai0 = ai; ai; ai = ai->ai_next) {
987 char addr[NI_MAXHOST];
988
989 s = socket(ai->ai_family, ai->ai_socktype,
990 ai->ai_protocol);
991 if (s < 0)
992 continue;
993
994 getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
995 sizeof(addr), NULL, 0, NI_NUMERICHOST);
996 imap_info("Connecting to [%s]:%s... ", addr, portstr);
997
998 if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) {
999 close(s);
1000 s = -1;
1001 perror("connect");
1002 continue;
1003 }
1004
1005 break;
1006 }
1007 freeaddrinfo(ai0);
1008 #else /* NO_IPV6 */
1009 struct hostent *he;
1010 struct sockaddr_in addr;
1011
1012 memset(&addr, 0, sizeof(addr));
1013 addr.sin_port = htons(srvc->port);
1014 addr.sin_family = AF_INET;
1015
1016 imap_info("Resolving %s... ", srvc->host);
1017 he = gethostbyname(srvc->host);
1018 if (!he) {
1019 perror("gethostbyname");
1020 goto bail;
1021 }
1022 imap_info("ok\n");
1023
1024 addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]);
1025
1026 s = socket(PF_INET, SOCK_STREAM, 0);
1027
1028 imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
1029 if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) {
1030 close(s);
1031 s = -1;
1032 perror("connect");
1033 }
1034 #endif
1035 if (s < 0) {
1036 fputs("Error: unable to connect to server.\n", stderr);
1037 goto bail;
1038 }
1039
1040 imap->buf.sock.fd[0] = s;
1041 imap->buf.sock.fd[1] = dup(s);
1042
1043 if (srvc->use_ssl &&
1044 ssl_socket_connect(&imap->buf.sock, srvc, 0)) {
1045 close(s);
1046 goto bail;
1047 }
1048 imap_info("ok\n");
1049 }
1050
1051 /* read the greeting string */
1052 if (buffer_gets(&imap->buf, &rsp)) {
1053 fprintf(stderr, "IMAP error: no greeting response\n");
1054 goto bail;
1055 }
1056 arg = next_arg(&rsp);
1057 if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) {
1058 fprintf(stderr, "IMAP error: invalid greeting response\n");
1059 goto bail;
1060 }
1061 preauth = 0;
1062 if (!strcmp("PREAUTH", arg))
1063 preauth = 1;
1064 else if (strcmp("OK", arg) != 0) {
1065 fprintf(stderr, "IMAP error: unknown greeting response\n");
1066 goto bail;
1067 }
1068 parse_response_code(ctx, NULL, rsp);
1069 if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1070 goto bail;
1071
1072 if (!preauth) {
1073 #ifndef NO_OPENSSL
1074 if (!srvc->use_ssl && CAP(STARTTLS)) {
1075 if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK)
1076 goto bail;
1077 if (ssl_socket_connect(&imap->buf.sock, srvc, 1))
1078 goto bail;
1079 /* capabilities may have changed, so get the new capabilities */
1080 if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK)
1081 goto bail;
1082 }
1083 #endif
1084 imap_info("Logging in...\n");
1085 server_fill_credential(srvc, &cred);
1086
1087 if (srvc->auth_method) {
1088 struct imap_cmd_cb cb;
1089
1090 if (!strcmp(srvc->auth_method, "CRAM-MD5")) {
1091 if (!CAP(AUTH_CRAM_MD5)) {
1092 fprintf(stderr, "You specified "
1093 "CRAM-MD5 as authentication method, "
1094 "but %s doesn't support it.\n", srvc->host);
1095 goto bail;
1096 }
1097 /* CRAM-MD5 */
1098
1099 memset(&cb, 0, sizeof(cb));
1100 cb.cont = auth_cram_md5;
1101 if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) {
1102 fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n");
1103 goto bail;
1104 }
1105 } else {
1106 fprintf(stderr, "Unknown authentication method:%s\n", srvc->host);
1107 goto bail;
1108 }
1109 } else {
1110 if (CAP(NOLOGIN)) {
1111 fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n",
1112 srvc->user, srvc->host);
1113 goto bail;
1114 }
1115 if (!imap->buf.sock.ssl)
1116 imap_warn("*** IMAP Warning *** Password is being "
1117 "sent in the clear\n");
1118 if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) {
1119 fprintf(stderr, "IMAP error: LOGIN failed\n");
1120 goto bail;
1121 }
1122 }
1123 } /* !preauth */
1124
1125 if (cred.username)
1126 credential_approve(the_repository, &cred);
1127 credential_clear(&cred);
1128
1129 /* check the target mailbox exists */
1130 ctx->name = folder;
1131 switch (imap_exec(ctx, NULL, "EXAMINE \"%s\"", ctx->name)) {
1132 case RESP_OK:
1133 /* ok */
1134 break;
1135 case RESP_BAD:
1136 fprintf(stderr, "IMAP error: could not check mailbox\n");
1137 goto out;
1138 case RESP_NO:
1139 if (imap_exec(ctx, NULL, "CREATE \"%s\"", ctx->name) == RESP_OK) {
1140 imap_info("Created missing mailbox\n");
1141 } else {
1142 fprintf(stderr, "IMAP error: could not create missing mailbox\n");
1143 goto out;
1144 }
1145 break;
1146 }
1147
1148 ctx->prefix = "";
1149 return ctx;
1150
1151 bail:
1152 if (cred.username)
1153 credential_reject(the_repository, &cred);
1154 credential_clear(&cred);
1155
1156 out:
1157 imap_close_store(ctx);
1158 return NULL;
1159 }
1160
1161 /*
1162 * Insert CR characters as necessary in *msg to ensure that every LF
1163 * character in *msg is preceded by a CR.
1164 */
1165 static void lf_to_crlf(struct strbuf *msg)
1166 {
1167 char *new_msg;
1168 size_t i, j;
1169 char lastc;
1170
1171 /* First pass: tally, in j, the size of the new_msg string: */
1172 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1173 if (msg->buf[i] == '\n' && lastc != '\r')
1174 j++; /* a CR will need to be added here */
1175 lastc = msg->buf[i];
1176 j++;
1177 }
1178
1179 new_msg = xmallocz(j);
1180
1181 /*
1182 * Second pass: write the new_msg string. Note that this loop is
1183 * otherwise identical to the first pass.
1184 */
1185 for (i = j = 0, lastc = '\0'; i < msg->len; i++) {
1186 if (msg->buf[i] == '\n' && lastc != '\r')
1187 new_msg[j++] = '\r';
1188 lastc = new_msg[j++] = msg->buf[i];
1189 }
1190 strbuf_attach(msg, new_msg, j, j + 1);
1191 }
1192
1193 /*
1194 * Store msg to IMAP. Also detach and free the data from msg->data,
1195 * leaving msg->data empty.
1196 */
1197 static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg)
1198 {
1199 struct imap *imap = ctx->imap;
1200 struct imap_cmd_cb cb;
1201 const char *prefix, *box;
1202 int ret;
1203
1204 lf_to_crlf(msg);
1205 memset(&cb, 0, sizeof(cb));
1206
1207 cb.dlen = msg->len;
1208 cb.data = strbuf_detach(msg, NULL);
1209
1210 box = ctx->name;
1211 prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix;
1212 ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box);
1213 imap->caps = imap->rcaps;
1214 if (ret != DRV_OK)
1215 return ret;
1216
1217 return DRV_OK;
1218 }
1219
1220 static void wrap_in_html(struct strbuf *msg)
1221 {
1222 struct strbuf buf = STRBUF_INIT;
1223 static const char *content_type = "Content-Type: text/html;\n";
1224 static const char *pre_open = "<pre>\n";
1225 static const char *pre_close = "</pre>\n";
1226 const char *body = strstr(msg->buf, "\n\n");
1227
1228 if (!body)
1229 return; /* Headers but no body; no wrapping needed */
1230
1231 body += 2;
1232
1233 strbuf_add(&buf, msg->buf, body - msg->buf - 1);
1234 strbuf_addstr(&buf, content_type);
1235 strbuf_addch(&buf, '\n');
1236 strbuf_addstr(&buf, pre_open);
1237 strbuf_addstr_xml_quoted(&buf, body);
1238 strbuf_addstr(&buf, pre_close);
1239
1240 strbuf_release(msg);
1241 *msg = buf;
1242 }
1243
1244 static int count_messages(struct strbuf *all_msgs)
1245 {
1246 int count = 0;
1247 char *p = all_msgs->buf;
1248
1249 while (1) {
1250 if (starts_with(p, "From ")) {
1251 p = strstr(p+5, "\nFrom: ");
1252 if (!p) break;
1253 p = strstr(p+7, "\nDate: ");
1254 if (!p) break;
1255 p = strstr(p+7, "\nSubject: ");
1256 if (!p) break;
1257 p += 10;
1258 count++;
1259 }
1260 p = strstr(p+5, "\nFrom ");
1261 if (!p)
1262 break;
1263 p++;
1264 }
1265 return count;
1266 }
1267
1268 /*
1269 * Copy the next message from all_msgs, starting at offset *ofs, to
1270 * msg. Update *ofs to the start of the following message. Return
1271 * true iff a message was successfully copied.
1272 */
1273 static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs)
1274 {
1275 char *p, *data;
1276 size_t len;
1277
1278 if (*ofs >= all_msgs->len)
1279 return 0;
1280
1281 data = &all_msgs->buf[*ofs];
1282 len = all_msgs->len - *ofs;
1283
1284 if (len < 5 || !starts_with(data, "From "))
1285 return 0;
1286
1287 p = strchr(data, '\n');
1288 if (p) {
1289 p++;
1290 len -= p - data;
1291 *ofs += p - data;
1292 data = p;
1293 }
1294
1295 p = strstr(data, "\nFrom ");
1296 if (p)
1297 len = &p[1] - data;
1298
1299 strbuf_add(msg, data, len);
1300 *ofs += len;
1301 return 1;
1302 }
1303
1304 static int git_imap_config(const char *var, const char *val,
1305 const struct config_context *ctx, void *cb)
1306 {
1307 struct imap_server_conf *cfg = cb;
1308
1309 if (!strcmp("imap.sslverify", var)) {
1310 cfg->ssl_verify = git_config_bool(var, val);
1311 } else if (!strcmp("imap.preformattedhtml", var)) {
1312 cfg->use_html = git_config_bool(var, val);
1313 } else if (!strcmp("imap.folder", var)) {
1314 FREE_AND_NULL(cfg->folder);
1315 return git_config_string(&cfg->folder, var, val);
1316 } else if (!strcmp("imap.user", var)) {
1317 FREE_AND_NULL(cfg->folder);
1318 return git_config_string(&cfg->user, var, val);
1319 } else if (!strcmp("imap.pass", var)) {
1320 FREE_AND_NULL(cfg->folder);
1321 return git_config_string(&cfg->pass, var, val);
1322 } else if (!strcmp("imap.tunnel", var)) {
1323 FREE_AND_NULL(cfg->folder);
1324 return git_config_string(&cfg->tunnel, var, val);
1325 } else if (!strcmp("imap.authmethod", var)) {
1326 FREE_AND_NULL(cfg->folder);
1327 return git_config_string(&cfg->auth_method, var, val);
1328 } else if (!strcmp("imap.port", var)) {
1329 cfg->port = git_config_int(var, val, ctx->kvi);
1330 } else if (!strcmp("imap.host", var)) {
1331 if (!val) {
1332 return config_error_nonbool(var);
1333 } else {
1334 if (starts_with(val, "imap:"))
1335 val += 5;
1336 else if (starts_with(val, "imaps:")) {
1337 val += 6;
1338 cfg->use_ssl = 1;
1339 }
1340 if (starts_with(val, "//"))
1341 val += 2;
1342 cfg->host = xstrdup(val);
1343 }
1344 } else {
1345 return git_default_config(var, val, ctx, cb);
1346 }
1347
1348 return 0;
1349 }
1350
1351 static int append_msgs_to_imap(struct imap_server_conf *server,
1352 struct strbuf* all_msgs, int total)
1353 {
1354 struct strbuf msg = STRBUF_INIT;
1355 struct imap_store *ctx = NULL;
1356 int ofs = 0;
1357 int r;
1358 int n = 0;
1359
1360 ctx = imap_open_store(server, server->folder);
1361 if (!ctx) {
1362 fprintf(stderr, "failed to open store\n");
1363 return 1;
1364 }
1365 ctx->name = server->folder;
1366
1367 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1368 while (1) {
1369 unsigned percent = n * 100 / total;
1370
1371 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1372
1373 if (!split_msg(all_msgs, &msg, &ofs))
1374 break;
1375 if (server->use_html)
1376 wrap_in_html(&msg);
1377 r = imap_store_msg(ctx, &msg);
1378 if (r != DRV_OK)
1379 break;
1380 n++;
1381 }
1382 fprintf(stderr, "\n");
1383
1384 imap_close_store(ctx);
1385
1386 return 0;
1387 }
1388
1389 #ifdef USE_CURL_FOR_IMAP_SEND
1390 static CURL *setup_curl(struct imap_server_conf *srvc, struct credential *cred)
1391 {
1392 CURL *curl;
1393 struct strbuf path = STRBUF_INIT;
1394 char *uri_encoded_folder;
1395
1396 if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
1397 die("curl_global_init failed");
1398
1399 curl = curl_easy_init();
1400
1401 if (!curl)
1402 die("curl_easy_init failed");
1403
1404 server_fill_credential(srvc, cred);
1405 curl_easy_setopt(curl, CURLOPT_USERNAME, srvc->user);
1406 curl_easy_setopt(curl, CURLOPT_PASSWORD, srvc->pass);
1407
1408 strbuf_addstr(&path, srvc->use_ssl ? "imaps://" : "imap://");
1409 strbuf_addstr(&path, srvc->host);
1410 if (!path.len || path.buf[path.len - 1] != '/')
1411 strbuf_addch(&path, '/');
1412
1413 uri_encoded_folder = curl_easy_escape(curl, srvc->folder, 0);
1414 if (!uri_encoded_folder)
1415 die("failed to encode server folder");
1416 strbuf_addstr(&path, uri_encoded_folder);
1417 curl_free(uri_encoded_folder);
1418
1419 curl_easy_setopt(curl, CURLOPT_URL, path.buf);
1420 strbuf_release(&path);
1421 curl_easy_setopt(curl, CURLOPT_PORT, srvc->port);
1422
1423 if (srvc->auth_method) {
1424 struct strbuf auth = STRBUF_INIT;
1425 strbuf_addstr(&auth, "AUTH=");
1426 strbuf_addstr(&auth, srvc->auth_method);
1427 curl_easy_setopt(curl, CURLOPT_LOGIN_OPTIONS, auth.buf);
1428 strbuf_release(&auth);
1429 }
1430
1431 if (!srvc->use_ssl)
1432 curl_easy_setopt(curl, CURLOPT_USE_SSL, (long)CURLUSESSL_TRY);
1433
1434 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, srvc->ssl_verify);
1435 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, srvc->ssl_verify);
1436
1437 curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
1438
1439 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
1440
1441 if (0 < verbosity || getenv("GIT_CURL_VERBOSE"))
1442 http_trace_curl_no_data();
1443 setup_curl_trace(curl);
1444
1445 return curl;
1446 }
1447
1448 static int curl_append_msgs_to_imap(struct imap_server_conf *server,
1449 struct strbuf* all_msgs, int total)
1450 {
1451 int ofs = 0;
1452 int n = 0;
1453 struct buffer msgbuf = { STRBUF_INIT, 0 };
1454 CURL *curl;
1455 CURLcode res = CURLE_OK;
1456 struct credential cred = CREDENTIAL_INIT;
1457
1458 curl = setup_curl(server, &cred);
1459 curl_easy_setopt(curl, CURLOPT_READDATA, &msgbuf);
1460
1461 fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : "");
1462 while (1) {
1463 unsigned percent = n * 100 / total;
1464 int prev_len;
1465
1466 fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total);
1467
1468 prev_len = msgbuf.buf.len;
1469 if (!split_msg(all_msgs, &msgbuf.buf, &ofs))
1470 break;
1471 if (server->use_html)
1472 wrap_in_html(&msgbuf.buf);
1473 lf_to_crlf(&msgbuf.buf);
1474
1475 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
1476 (curl_off_t)(msgbuf.buf.len-prev_len));
1477
1478 res = curl_easy_perform(curl);
1479
1480 if(res != CURLE_OK) {
1481 fprintf(stderr, "curl_easy_perform() failed: %s\n",
1482 curl_easy_strerror(res));
1483 break;
1484 }
1485
1486 n++;
1487 }
1488 fprintf(stderr, "\n");
1489
1490 curl_easy_cleanup(curl);
1491 curl_global_cleanup();
1492
1493 if (cred.username) {
1494 if (res == CURLE_OK)
1495 credential_approve(the_repository, &cred);
1496 else if (res == CURLE_LOGIN_DENIED)
1497 credential_reject(the_repository, &cred);
1498 }
1499
1500 credential_clear(&cred);
1501
1502 return res != CURLE_OK;
1503 }
1504 #endif
1505
1506 int cmd_main(int argc, const char **argv)
1507 {
1508 struct imap_server_conf server = {
1509 .ssl_verify = 1,
1510 };
1511 struct strbuf all_msgs = STRBUF_INIT;
1512 int total;
1513 int nongit_ok;
1514 int ret;
1515
1516 setup_git_directory_gently(&nongit_ok);
1517 git_config(git_imap_config, &server);
1518
1519 argc = parse_options(argc, (const char **)argv, "", imap_send_options, imap_send_usage, 0);
1520
1521 if (argc)
1522 usage_with_options(imap_send_usage, imap_send_options);
1523
1524 #ifndef USE_CURL_FOR_IMAP_SEND
1525 if (use_curl) {
1526 warning("--curl not supported in this build");
1527 use_curl = 0;
1528 }
1529 #elif defined(NO_OPENSSL)
1530 if (!use_curl) {
1531 warning("--no-curl not supported in this build");
1532 use_curl = 1;
1533 }
1534 #endif
1535
1536 if (!server.port)
1537 server.port = server.use_ssl ? 993 : 143;
1538
1539 if (!server.folder) {
1540 fprintf(stderr, "no imap store specified\n");
1541 ret = 1;
1542 goto out;
1543 }
1544 if (!server.host) {
1545 if (!server.tunnel) {
1546 fprintf(stderr, "no imap host specified\n");
1547 ret = 1;
1548 goto out;
1549 }
1550 server.host = xstrdup("tunnel");
1551 }
1552
1553 /* read the messages */
1554 if (strbuf_read(&all_msgs, 0, 0) < 0) {
1555 error_errno(_("could not read from stdin"));
1556 ret = 1;
1557 goto out;
1558 }
1559
1560 if (all_msgs.len == 0) {
1561 fprintf(stderr, "nothing to send\n");
1562 ret = 1;
1563 goto out;
1564 }
1565
1566 total = count_messages(&all_msgs);
1567 if (!total) {
1568 fprintf(stderr, "no messages to send\n");
1569 ret = 1;
1570 goto out;
1571 }
1572
1573 /* write it to the imap server */
1574
1575 if (server.tunnel)
1576 ret = append_msgs_to_imap(&server, &all_msgs, total);
1577 #ifdef USE_CURL_FOR_IMAP_SEND
1578 else if (use_curl)
1579 ret = curl_append_msgs_to_imap(&server, &all_msgs, total);
1580 #endif
1581 else
1582 ret = append_msgs_to_imap(&server, &all_msgs, total);
1583
1584 out:
1585 free(server.tunnel);
1586 free(server.host);
1587 free(server.folder);
1588 free(server.user);
1589 free(server.pass);
1590 free(server.auth_method);
1591 strbuf_release(&all_msgs);
1592 return ret;
1593 }
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