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f2561fda MM |
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" | |
2fb3f6db | 26 | #include "exec_cmd.h" |
c94d2dd0 | 27 | #include "run-command.h" |
d3c58b83 | 28 | #include "prompt.h" |
684ec6c6 RS |
29 | #ifdef NO_OPENSSL |
30 | typedef void *SSL; | |
ae9c606e HM |
31 | #else |
32 | #include <openssl/evp.h> | |
33 | #include <openssl/hmac.h> | |
e174744a | 34 | #include <openssl/x509v3.h> |
684ec6c6 | 35 | #endif |
f2561fda | 36 | |
9a2861e3 | 37 | static const char imap_send_usage[] = "git imap-send < <mbox>"; |
f2561fda | 38 | |
d23b1ecf | 39 | #undef DRV_OK |
f2561fda MM |
40 | #define DRV_OK 0 |
41 | #define DRV_MSG_BAD -1 | |
42 | #define DRV_BOX_BAD -2 | |
43 | #define DRV_STORE_BAD -3 | |
44 | ||
45 | static int Verbose, Quiet; | |
46 | ||
28bea9e5 | 47 | __attribute__((format (printf, 1, 2))) |
95c53908 | 48 | static void imap_info(const char *, ...); |
28bea9e5 | 49 | __attribute__((format (printf, 1, 2))) |
95c53908 | 50 | static void imap_warn(const char *, ...); |
f2561fda | 51 | |
95c53908 | 52 | static char *next_arg(char **); |
f2561fda | 53 | |
28bea9e5 | 54 | __attribute__((format (printf, 3, 4))) |
95c53908 | 55 | static int nfsnprintf(char *buf, int blen, const char *fmt, ...); |
f2561fda | 56 | |
19247e55 PH |
57 | static int nfvasprintf(char **strp, const char *fmt, va_list ap) |
58 | { | |
59 | int len; | |
60 | char tmp[8192]; | |
61 | ||
62 | len = vsnprintf(tmp, sizeof(tmp), fmt, ap); | |
63 | if (len < 0) | |
d7530708 | 64 | die("Fatal: Out of memory"); |
19247e55 | 65 | if (len >= sizeof(tmp)) |
d7530708 | 66 | die("imap command overflow!"); |
19247e55 PH |
67 | *strp = xmemdupz(tmp, len); |
68 | return len; | |
69 | } | |
f2561fda | 70 | |
9f1ad541 | 71 | struct imap_server_conf { |
f2561fda MM |
72 | char *name; |
73 | char *tunnel; | |
74 | char *host; | |
75 | int port; | |
76 | char *user; | |
77 | char *pass; | |
684ec6c6 RS |
78 | int use_ssl; |
79 | int ssl_verify; | |
c64d84f1 | 80 | int use_html; |
ae9c606e HM |
81 | char *auth_method; |
82 | }; | |
83 | ||
84 | static struct imap_server_conf server = { | |
85 | NULL, /* name */ | |
86 | NULL, /* tunnel */ | |
87 | NULL, /* host */ | |
88 | 0, /* port */ | |
89 | NULL, /* user */ | |
90 | NULL, /* pass */ | |
91 | 0, /* use_ssl */ | |
92 | 1, /* ssl_verify */ | |
93 | 0, /* use_html */ | |
94 | NULL, /* auth_method */ | |
9f1ad541 | 95 | }; |
f2561fda | 96 | |
9f1ad541 | 97 | struct imap_socket { |
7a7796e9 | 98 | int fd[2]; |
684ec6c6 | 99 | SSL *ssl; |
9f1ad541 | 100 | }; |
f2561fda | 101 | |
9f1ad541 JH |
102 | struct imap_buffer { |
103 | struct imap_socket sock; | |
f2561fda MM |
104 | int bytes; |
105 | int offset; | |
106 | char buf[1024]; | |
9f1ad541 | 107 | }; |
f2561fda MM |
108 | |
109 | struct imap_cmd; | |
110 | ||
9f1ad541 | 111 | struct imap { |
f2561fda | 112 | int uidnext; /* from SELECT responses */ |
f2561fda MM |
113 | unsigned caps, rcaps; /* CAPABILITY results */ |
114 | /* command queue */ | |
115 | int nexttag, num_in_progress, literal_pending; | |
116 | struct imap_cmd *in_progress, **in_progress_append; | |
9f1ad541 JH |
117 | struct imap_buffer buf; /* this is BIG, so put it last */ |
118 | }; | |
f2561fda | 119 | |
9f1ad541 | 120 | struct imap_store { |
636fd66b MH |
121 | /* currently open mailbox */ |
122 | const char *name; /* foreign! maybe preset? */ | |
123 | int uidvalidity; | |
9f1ad541 | 124 | struct imap *imap; |
f2561fda | 125 | const char *prefix; |
9f1ad541 | 126 | }; |
f2561fda MM |
127 | |
128 | struct imap_cmd_cb { | |
9f1ad541 JH |
129 | int (*cont)(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt); |
130 | void (*done)(struct imap_store *ctx, struct imap_cmd *cmd, int response); | |
f2561fda MM |
131 | void *ctx; |
132 | char *data; | |
133 | int dlen; | |
134 | int uid; | |
135 | unsigned create:1, trycreate:1; | |
136 | }; | |
137 | ||
138 | struct imap_cmd { | |
139 | struct imap_cmd *next; | |
140 | struct imap_cmd_cb cb; | |
141 | char *cmd; | |
142 | int tag; | |
143 | }; | |
144 | ||
145 | #define CAP(cap) (imap->caps & (1 << (cap))) | |
146 | ||
147 | enum CAPABILITY { | |
148 | NOLOGIN = 0, | |
149 | UIDPLUS, | |
150 | LITERALPLUS, | |
151 | NAMESPACE, | |
684ec6c6 | 152 | STARTTLS, |
4b05548f | 153 | AUTH_CRAM_MD5 |
f2561fda MM |
154 | }; |
155 | ||
156 | static const char *cap_list[] = { | |
157 | "LOGINDISABLED", | |
158 | "UIDPLUS", | |
159 | "LITERAL+", | |
160 | "NAMESPACE", | |
684ec6c6 | 161 | "STARTTLS", |
ae9c606e | 162 | "AUTH=CRAM-MD5", |
f2561fda MM |
163 | }; |
164 | ||
165 | #define RESP_OK 0 | |
166 | #define RESP_NO 1 | |
167 | #define RESP_BAD 2 | |
168 | ||
9f1ad541 | 169 | static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd); |
f2561fda MM |
170 | |
171 | ||
684ec6c6 RS |
172 | #ifndef NO_OPENSSL |
173 | static void ssl_socket_perror(const char *func) | |
174 | { | |
2af202be | 175 | fprintf(stderr, "%s: %s\n", func, ERR_error_string(ERR_get_error(), NULL)); |
684ec6c6 RS |
176 | } |
177 | #endif | |
178 | ||
9f1ad541 | 179 | static void socket_perror(const char *func, struct imap_socket *sock, int ret) |
f2561fda | 180 | { |
684ec6c6 RS |
181 | #ifndef NO_OPENSSL |
182 | if (sock->ssl) { | |
183 | int sslerr = SSL_get_error(sock->ssl, ret); | |
184 | switch (sslerr) { | |
185 | case SSL_ERROR_NONE: | |
186 | break; | |
187 | case SSL_ERROR_SYSCALL: | |
188 | perror("SSL_connect"); | |
189 | break; | |
190 | default: | |
191 | ssl_socket_perror("SSL_connect"); | |
192 | break; | |
193 | } | |
194 | } else | |
195 | #endif | |
196 | { | |
197 | if (ret < 0) | |
198 | perror(func); | |
199 | else | |
200 | fprintf(stderr, "%s: unexpected EOF\n", func); | |
201 | } | |
202 | } | |
203 | ||
1e1fe529 | 204 | #ifdef NO_OPENSSL |
9f1ad541 | 205 | static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify) |
684ec6c6 | 206 | { |
684ec6c6 RS |
207 | fprintf(stderr, "SSL requested but SSL support not compiled in\n"); |
208 | return -1; | |
1e1fe529 JH |
209 | } |
210 | ||
1e380ddc | 211 | #else |
1e1fe529 | 212 | |
b62fb077 OB |
213 | static int host_matches(const char *host, const char *pattern) |
214 | { | |
215 | if (pattern[0] == '*' && pattern[1] == '.') { | |
216 | pattern += 2; | |
217 | if (!(host = strchr(host, '.'))) | |
218 | return 0; | |
219 | host++; | |
220 | } | |
221 | ||
222 | return *host && *pattern && !strcasecmp(host, pattern); | |
223 | } | |
224 | ||
225 | static int verify_hostname(X509 *cert, const char *hostname) | |
226 | { | |
227 | int len; | |
228 | X509_NAME *subj; | |
229 | char cname[1000]; | |
e174744a OB |
230 | int i, found; |
231 | STACK_OF(GENERAL_NAME) *subj_alt_names; | |
232 | ||
233 | /* try the DNS subjectAltNames */ | |
234 | found = 0; | |
235 | if ((subj_alt_names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL))) { | |
236 | int num_subj_alt_names = sk_GENERAL_NAME_num(subj_alt_names); | |
237 | for (i = 0; !found && i < num_subj_alt_names; i++) { | |
238 | GENERAL_NAME *subj_alt_name = sk_GENERAL_NAME_value(subj_alt_names, i); | |
239 | if (subj_alt_name->type == GEN_DNS && | |
240 | strlen((const char *)subj_alt_name->d.ia5->data) == (size_t)subj_alt_name->d.ia5->length && | |
241 | host_matches(hostname, (const char *)(subj_alt_name->d.ia5->data))) | |
242 | found = 1; | |
243 | } | |
244 | sk_GENERAL_NAME_pop_free(subj_alt_names, GENERAL_NAME_free); | |
245 | } | |
246 | if (found) | |
247 | return 0; | |
b62fb077 OB |
248 | |
249 | /* try the common name */ | |
250 | if (!(subj = X509_get_subject_name(cert))) | |
251 | return error("cannot get certificate subject"); | |
252 | if ((len = X509_NAME_get_text_by_NID(subj, NID_commonName, cname, sizeof(cname))) < 0) | |
253 | return error("cannot get certificate common name"); | |
254 | if (strlen(cname) == (size_t)len && host_matches(hostname, cname)) | |
255 | return 0; | |
256 | return error("certificate owner '%s' does not match hostname '%s'", | |
257 | cname, hostname); | |
258 | } | |
259 | ||
1e1fe529 JH |
260 | static int ssl_socket_connect(struct imap_socket *sock, int use_tls_only, int verify) |
261 | { | |
1e380ddc VL |
262 | #if (OPENSSL_VERSION_NUMBER >= 0x10000000L) |
263 | const SSL_METHOD *meth; | |
684ec6c6 RS |
264 | #else |
265 | SSL_METHOD *meth; | |
1e380ddc | 266 | #endif |
684ec6c6 RS |
267 | SSL_CTX *ctx; |
268 | int ret; | |
b62fb077 | 269 | X509 *cert; |
684ec6c6 RS |
270 | |
271 | SSL_library_init(); | |
272 | SSL_load_error_strings(); | |
273 | ||
274 | if (use_tls_only) | |
275 | meth = TLSv1_method(); | |
f2561fda | 276 | else |
684ec6c6 RS |
277 | meth = SSLv23_method(); |
278 | ||
279 | if (!meth) { | |
280 | ssl_socket_perror("SSLv23_method"); | |
281 | return -1; | |
282 | } | |
283 | ||
284 | ctx = SSL_CTX_new(meth); | |
285 | ||
286 | if (verify) | |
287 | SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL); | |
288 | ||
289 | if (!SSL_CTX_set_default_verify_paths(ctx)) { | |
290 | ssl_socket_perror("SSL_CTX_set_default_verify_paths"); | |
291 | return -1; | |
292 | } | |
293 | sock->ssl = SSL_new(ctx); | |
294 | if (!sock->ssl) { | |
295 | ssl_socket_perror("SSL_new"); | |
296 | return -1; | |
297 | } | |
7a7796e9 EFL |
298 | if (!SSL_set_rfd(sock->ssl, sock->fd[0])) { |
299 | ssl_socket_perror("SSL_set_rfd"); | |
300 | return -1; | |
301 | } | |
302 | if (!SSL_set_wfd(sock->ssl, sock->fd[1])) { | |
303 | ssl_socket_perror("SSL_set_wfd"); | |
684ec6c6 RS |
304 | return -1; |
305 | } | |
306 | ||
307 | ret = SSL_connect(sock->ssl); | |
308 | if (ret <= 0) { | |
309 | socket_perror("SSL_connect", sock, ret); | |
310 | return -1; | |
311 | } | |
312 | ||
b62fb077 OB |
313 | if (verify) { |
314 | /* make sure the hostname matches that of the certificate */ | |
315 | cert = SSL_get_peer_certificate(sock->ssl); | |
316 | if (!cert) | |
317 | return error("unable to get peer certificate."); | |
318 | if (verify_hostname(cert, server.host) < 0) | |
319 | return -1; | |
320 | } | |
321 | ||
684ec6c6 | 322 | return 0; |
f2561fda | 323 | } |
1e1fe529 | 324 | #endif |
f2561fda | 325 | |
9f1ad541 | 326 | static int socket_read(struct imap_socket *sock, char *buf, int len) |
f2561fda | 327 | { |
684ec6c6 RS |
328 | ssize_t n; |
329 | #ifndef NO_OPENSSL | |
330 | if (sock->ssl) | |
331 | n = SSL_read(sock->ssl, buf, len); | |
332 | else | |
333 | #endif | |
7a7796e9 | 334 | n = xread(sock->fd[0], buf, len); |
f2561fda | 335 | if (n <= 0) { |
95c53908 | 336 | socket_perror("read", sock, n); |
7a7796e9 EFL |
337 | close(sock->fd[0]); |
338 | close(sock->fd[1]); | |
339 | sock->fd[0] = sock->fd[1] = -1; | |
f2561fda MM |
340 | } |
341 | return n; | |
342 | } | |
343 | ||
9f1ad541 | 344 | static int socket_write(struct imap_socket *sock, const char *buf, int len) |
f2561fda | 345 | { |
684ec6c6 RS |
346 | int n; |
347 | #ifndef NO_OPENSSL | |
348 | if (sock->ssl) | |
349 | n = SSL_write(sock->ssl, buf, len); | |
350 | else | |
351 | #endif | |
7a7796e9 | 352 | n = write_in_full(sock->fd[1], buf, len); |
f2561fda | 353 | if (n != len) { |
95c53908 | 354 | socket_perror("write", sock, n); |
7a7796e9 EFL |
355 | close(sock->fd[0]); |
356 | close(sock->fd[1]); | |
357 | sock->fd[0] = sock->fd[1] = -1; | |
f2561fda MM |
358 | } |
359 | return n; | |
360 | } | |
361 | ||
9f1ad541 | 362 | static void socket_shutdown(struct imap_socket *sock) |
684ec6c6 RS |
363 | { |
364 | #ifndef NO_OPENSSL | |
365 | if (sock->ssl) { | |
366 | SSL_shutdown(sock->ssl); | |
367 | SSL_free(sock->ssl); | |
368 | } | |
369 | #endif | |
7a7796e9 EFL |
370 | close(sock->fd[0]); |
371 | close(sock->fd[1]); | |
684ec6c6 RS |
372 | } |
373 | ||
f2561fda | 374 | /* simple line buffering */ |
9f1ad541 | 375 | static int buffer_gets(struct imap_buffer *b, char **s) |
f2561fda MM |
376 | { |
377 | int n; | |
378 | int start = b->offset; | |
379 | ||
380 | *s = b->buf + start; | |
381 | ||
382 | for (;;) { | |
383 | /* make sure we have enough data to read the \r\n sequence */ | |
384 | if (b->offset + 1 >= b->bytes) { | |
385 | if (start) { | |
386 | /* shift down used bytes */ | |
387 | *s = b->buf; | |
388 | ||
95c53908 | 389 | assert(start <= b->bytes); |
f2561fda MM |
390 | n = b->bytes - start; |
391 | ||
392 | if (n) | |
173a9cbe | 393 | memmove(b->buf, b->buf + start, n); |
f2561fda MM |
394 | b->offset -= start; |
395 | b->bytes = n; | |
396 | start = 0; | |
397 | } | |
398 | ||
95c53908 RS |
399 | n = socket_read(&b->sock, b->buf + b->bytes, |
400 | sizeof(b->buf) - b->bytes); | |
f2561fda MM |
401 | |
402 | if (n <= 0) | |
403 | return -1; | |
404 | ||
405 | b->bytes += n; | |
406 | } | |
407 | ||
408 | if (b->buf[b->offset] == '\r') { | |
95c53908 | 409 | assert(b->offset + 1 < b->bytes); |
f2561fda MM |
410 | if (b->buf[b->offset + 1] == '\n') { |
411 | b->buf[b->offset] = 0; /* terminate the string */ | |
412 | b->offset += 2; /* next line */ | |
413 | if (Verbose) | |
95c53908 | 414 | puts(*s); |
f2561fda MM |
415 | return 0; |
416 | } | |
417 | } | |
418 | ||
419 | b->offset++; | |
420 | } | |
421 | /* not reached */ | |
422 | } | |
423 | ||
95c53908 | 424 | static void imap_info(const char *msg, ...) |
f2561fda MM |
425 | { |
426 | va_list va; | |
427 | ||
428 | if (!Quiet) { | |
95c53908 RS |
429 | va_start(va, msg); |
430 | vprintf(msg, va); | |
431 | va_end(va); | |
432 | fflush(stdout); | |
f2561fda MM |
433 | } |
434 | } | |
435 | ||
95c53908 | 436 | static void imap_warn(const char *msg, ...) |
f2561fda MM |
437 | { |
438 | va_list va; | |
439 | ||
440 | if (Quiet < 2) { | |
95c53908 RS |
441 | va_start(va, msg); |
442 | vfprintf(stderr, msg, va); | |
443 | va_end(va); | |
f2561fda MM |
444 | } |
445 | } | |
446 | ||
95c53908 | 447 | static char *next_arg(char **s) |
f2561fda MM |
448 | { |
449 | char *ret; | |
450 | ||
451 | if (!s || !*s) | |
5142db69 | 452 | return NULL; |
95c53908 | 453 | while (isspace((unsigned char) **s)) |
f2561fda MM |
454 | (*s)++; |
455 | if (!**s) { | |
5142db69 RS |
456 | *s = NULL; |
457 | return NULL; | |
f2561fda MM |
458 | } |
459 | if (**s == '"') { | |
460 | ++*s; | |
461 | ret = *s; | |
95c53908 | 462 | *s = strchr(*s, '"'); |
f2561fda MM |
463 | } else { |
464 | ret = *s; | |
95c53908 | 465 | while (**s && !isspace((unsigned char) **s)) |
f2561fda MM |
466 | (*s)++; |
467 | } | |
468 | if (*s) { | |
469 | if (**s) | |
470 | *(*s)++ = 0; | |
471 | if (!**s) | |
5142db69 | 472 | *s = NULL; |
f2561fda MM |
473 | } |
474 | return ret; | |
475 | } | |
476 | ||
95c53908 | 477 | static int nfsnprintf(char *buf, int blen, const char *fmt, ...) |
f2561fda MM |
478 | { |
479 | int ret; | |
480 | va_list va; | |
481 | ||
95c53908 RS |
482 | va_start(va, fmt); |
483 | if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen) | |
d7530708 | 484 | die("Fatal: buffer too small. Please report a bug."); |
95c53908 | 485 | va_end(va); |
f2561fda MM |
486 | return ret; |
487 | } | |
488 | ||
9f1ad541 | 489 | static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx, |
95c53908 RS |
490 | struct imap_cmd_cb *cb, |
491 | const char *fmt, va_list ap) | |
f2561fda | 492 | { |
9f1ad541 | 493 | struct imap *imap = ctx->imap; |
f2561fda MM |
494 | struct imap_cmd *cmd; |
495 | int n, bufl; | |
496 | char buf[1024]; | |
497 | ||
95c53908 RS |
498 | cmd = xmalloc(sizeof(struct imap_cmd)); |
499 | nfvasprintf(&cmd->cmd, fmt, ap); | |
f2561fda MM |
500 | cmd->tag = ++imap->nexttag; |
501 | ||
502 | if (cb) | |
503 | cmd->cb = *cb; | |
504 | else | |
95c53908 | 505 | memset(&cmd->cb, 0, sizeof(cmd->cb)); |
f2561fda MM |
506 | |
507 | while (imap->literal_pending) | |
95c53908 | 508 | get_cmd_result(ctx, NULL); |
f2561fda | 509 | |
1702b138 ÆAB |
510 | if (!cmd->cb.data) |
511 | bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd); | |
512 | else | |
513 | bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n", | |
514 | cmd->tag, cmd->cmd, cmd->cb.dlen, | |
515 | CAP(LITERALPLUS) ? "+" : ""); | |
f2561fda | 516 | |
f2561fda MM |
517 | if (Verbose) { |
518 | if (imap->num_in_progress) | |
95c53908 RS |
519 | printf("(%d in progress) ", imap->num_in_progress); |
520 | if (memcmp(cmd->cmd, "LOGIN", 5)) | |
521 | printf(">>> %s", buf); | |
f2561fda | 522 | else |
95c53908 | 523 | printf(">>> %d LOGIN <user> <pass>\n", cmd->tag); |
f2561fda | 524 | } |
95c53908 RS |
525 | if (socket_write(&imap->buf.sock, buf, bufl) != bufl) { |
526 | free(cmd->cmd); | |
527 | free(cmd); | |
8e0f7003 | 528 | if (cb) |
95c53908 | 529 | free(cb->data); |
f2561fda MM |
530 | return NULL; |
531 | } | |
532 | if (cmd->cb.data) { | |
533 | if (CAP(LITERALPLUS)) { | |
95c53908 RS |
534 | n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen); |
535 | free(cmd->cb.data); | |
f2561fda | 536 | if (n != cmd->cb.dlen || |
8e76bf3f | 537 | socket_write(&imap->buf.sock, "\r\n", 2) != 2) { |
95c53908 RS |
538 | free(cmd->cmd); |
539 | free(cmd); | |
f2561fda MM |
540 | return NULL; |
541 | } | |
5142db69 | 542 | cmd->cb.data = NULL; |
f2561fda MM |
543 | } else |
544 | imap->literal_pending = 1; | |
545 | } else if (cmd->cb.cont) | |
546 | imap->literal_pending = 1; | |
5142db69 | 547 | cmd->next = NULL; |
f2561fda MM |
548 | *imap->in_progress_append = cmd; |
549 | imap->in_progress_append = &cmd->next; | |
550 | imap->num_in_progress++; | |
551 | return cmd; | |
552 | } | |
553 | ||
28bea9e5 | 554 | __attribute__((format (printf, 3, 4))) |
9f1ad541 | 555 | static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx, |
95c53908 RS |
556 | struct imap_cmd_cb *cb, |
557 | const char *fmt, ...) | |
f2561fda MM |
558 | { |
559 | struct imap_cmd *ret; | |
560 | va_list ap; | |
561 | ||
95c53908 RS |
562 | va_start(ap, fmt); |
563 | ret = v_issue_imap_cmd(ctx, cb, fmt, ap); | |
564 | va_end(ap); | |
f2561fda MM |
565 | return ret; |
566 | } | |
567 | ||
28bea9e5 | 568 | __attribute__((format (printf, 3, 4))) |
9f1ad541 | 569 | static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb, |
95c53908 | 570 | const char *fmt, ...) |
f2561fda MM |
571 | { |
572 | va_list ap; | |
573 | struct imap_cmd *cmdp; | |
574 | ||
95c53908 RS |
575 | va_start(ap, fmt); |
576 | cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap); | |
577 | va_end(ap); | |
f2561fda MM |
578 | if (!cmdp) |
579 | return RESP_BAD; | |
580 | ||
95c53908 | 581 | return get_cmd_result(ctx, cmdp); |
f2561fda MM |
582 | } |
583 | ||
28bea9e5 | 584 | __attribute__((format (printf, 3, 4))) |
9f1ad541 | 585 | static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb, |
95c53908 | 586 | const char *fmt, ...) |
f2561fda MM |
587 | { |
588 | va_list ap; | |
589 | struct imap_cmd *cmdp; | |
590 | ||
95c53908 RS |
591 | va_start(ap, fmt); |
592 | cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap); | |
593 | va_end(ap); | |
f2561fda MM |
594 | if (!cmdp) |
595 | return DRV_STORE_BAD; | |
596 | ||
95c53908 | 597 | switch (get_cmd_result(ctx, cmdp)) { |
f2561fda MM |
598 | case RESP_BAD: return DRV_STORE_BAD; |
599 | case RESP_NO: return DRV_MSG_BAD; | |
600 | default: return DRV_OK; | |
601 | } | |
602 | } | |
603 | ||
3648b4d9 | 604 | static int skip_imap_list_l(char **sp, int level) |
f2561fda | 605 | { |
3648b4d9 | 606 | char *s = *sp; |
f2561fda MM |
607 | |
608 | for (;;) { | |
95c53908 | 609 | while (isspace((unsigned char)*s)) |
f2561fda MM |
610 | s++; |
611 | if (level && *s == ')') { | |
612 | s++; | |
613 | break; | |
614 | } | |
f2561fda MM |
615 | if (*s == '(') { |
616 | /* sublist */ | |
617 | s++; | |
3648b4d9 | 618 | if (skip_imap_list_l(&s, level + 1)) |
f2561fda MM |
619 | goto bail; |
620 | } else if (*s == '"') { | |
621 | /* quoted string */ | |
622 | s++; | |
f2561fda MM |
623 | for (; *s != '"'; s++) |
624 | if (!*s) | |
625 | goto bail; | |
f2561fda | 626 | s++; |
f2561fda MM |
627 | } else { |
628 | /* atom */ | |
95c53908 | 629 | for (; *s && !isspace((unsigned char)*s); s++) |
f2561fda MM |
630 | if (level && *s == ')') |
631 | break; | |
f2561fda MM |
632 | } |
633 | ||
634 | if (!level) | |
635 | break; | |
636 | if (!*s) | |
637 | goto bail; | |
638 | } | |
639 | *sp = s; | |
f2561fda MM |
640 | return 0; |
641 | ||
9f1ad541 | 642 | bail: |
f2561fda MM |
643 | return -1; |
644 | } | |
645 | ||
3648b4d9 | 646 | static void skip_list(char **sp) |
f2561fda | 647 | { |
3648b4d9 | 648 | skip_imap_list_l(sp, 0); |
f2561fda MM |
649 | } |
650 | ||
9f1ad541 | 651 | static void parse_capability(struct imap *imap, char *cmd) |
f2561fda MM |
652 | { |
653 | char *arg; | |
654 | unsigned i; | |
655 | ||
656 | imap->caps = 0x80000000; | |
95c53908 | 657 | while ((arg = next_arg(&cmd))) |
f2561fda | 658 | for (i = 0; i < ARRAY_SIZE(cap_list); i++) |
95c53908 | 659 | if (!strcmp(cap_list[i], arg)) |
f2561fda MM |
660 | imap->caps |= 1 << i; |
661 | imap->rcaps = imap->caps; | |
662 | } | |
663 | ||
9f1ad541 | 664 | static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb, |
95c53908 | 665 | char *s) |
f2561fda | 666 | { |
9f1ad541 | 667 | struct imap *imap = ctx->imap; |
f2561fda MM |
668 | char *arg, *p; |
669 | ||
670 | if (*s != '[') | |
671 | return RESP_OK; /* no response code */ | |
672 | s++; | |
95c53908 RS |
673 | if (!(p = strchr(s, ']'))) { |
674 | fprintf(stderr, "IMAP error: malformed response code\n"); | |
f2561fda MM |
675 | return RESP_BAD; |
676 | } | |
677 | *p++ = 0; | |
95c53908 RS |
678 | arg = next_arg(&s); |
679 | if (!strcmp("UIDVALIDITY", arg)) { | |
636fd66b | 680 | if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) { |
95c53908 | 681 | fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n"); |
f2561fda MM |
682 | return RESP_BAD; |
683 | } | |
95c53908 RS |
684 | } else if (!strcmp("UIDNEXT", arg)) { |
685 | if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) { | |
686 | fprintf(stderr, "IMAP error: malformed NEXTUID status\n"); | |
f2561fda MM |
687 | return RESP_BAD; |
688 | } | |
95c53908 RS |
689 | } else if (!strcmp("CAPABILITY", arg)) { |
690 | parse_capability(imap, s); | |
691 | } else if (!strcmp("ALERT", arg)) { | |
f2561fda MM |
692 | /* RFC2060 says that these messages MUST be displayed |
693 | * to the user | |
694 | */ | |
95c53908 RS |
695 | for (; isspace((unsigned char)*p); p++); |
696 | fprintf(stderr, "*** IMAP ALERT *** %s\n", p); | |
697 | } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) { | |
636fd66b | 698 | if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) || |
9f1ad541 | 699 | !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) { |
95c53908 | 700 | fprintf(stderr, "IMAP error: malformed APPENDUID status\n"); |
f2561fda MM |
701 | return RESP_BAD; |
702 | } | |
703 | } | |
704 | return RESP_OK; | |
705 | } | |
706 | ||
9f1ad541 | 707 | static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd) |
f2561fda | 708 | { |
9f1ad541 | 709 | struct imap *imap = ctx->imap; |
f2561fda MM |
710 | struct imap_cmd *cmdp, **pcmdp, *ncmdp; |
711 | char *cmd, *arg, *arg1, *p; | |
712 | int n, resp, resp2, tag; | |
713 | ||
714 | for (;;) { | |
95c53908 | 715 | if (buffer_gets(&imap->buf, &cmd)) |
f2561fda MM |
716 | return RESP_BAD; |
717 | ||
95c53908 | 718 | arg = next_arg(&cmd); |
f2561fda | 719 | if (*arg == '*') { |
95c53908 | 720 | arg = next_arg(&cmd); |
f2561fda | 721 | if (!arg) { |
95c53908 | 722 | fprintf(stderr, "IMAP error: unable to parse untagged response\n"); |
f2561fda MM |
723 | return RESP_BAD; |
724 | } | |
725 | ||
95c53908 | 726 | if (!strcmp("NAMESPACE", arg)) { |
3648b4d9 MH |
727 | /* rfc2342 NAMESPACE response. */ |
728 | skip_list(&cmd); /* Personal mailboxes */ | |
729 | skip_list(&cmd); /* Others' mailboxes */ | |
730 | skip_list(&cmd); /* Shared mailboxes */ | |
95c53908 RS |
731 | } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) || |
732 | !strcmp("NO", arg) || !strcmp("BYE", arg)) { | |
733 | if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK) | |
f2561fda | 734 | return resp; |
1efee7ff | 735 | } else if (!strcmp("CAPABILITY", arg)) { |
95c53908 | 736 | parse_capability(imap, cmd); |
1efee7ff MH |
737 | } else if ((arg1 = next_arg(&cmd))) { |
738 | ; /* | |
739 | * Unhandled response-data with at least two words. | |
740 | * Ignore it. | |
741 | * | |
742 | * NEEDSWORK: Previously this case handled '<num> EXISTS' | |
743 | * and '<num> RECENT' but as a probably-unintended side | |
744 | * effect it ignores other unrecognized two-word | |
745 | * responses. imap-send doesn't ever try to read | |
746 | * messages or mailboxes these days, so consider | |
747 | * eliminating this case. | |
748 | */ | |
f2561fda | 749 | } else { |
95c53908 | 750 | fprintf(stderr, "IMAP error: unable to parse untagged response\n"); |
f2561fda MM |
751 | return RESP_BAD; |
752 | } | |
753 | } else if (!imap->in_progress) { | |
95c53908 | 754 | fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : ""); |
f2561fda MM |
755 | return RESP_BAD; |
756 | } else if (*arg == '+') { | |
757 | /* This can happen only with the last command underway, as | |
758 | it enforces a round-trip. */ | |
759 | cmdp = (struct imap_cmd *)((char *)imap->in_progress_append - | |
760 | offsetof(struct imap_cmd, next)); | |
761 | if (cmdp->cb.data) { | |
95c53908 RS |
762 | n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen); |
763 | free(cmdp->cb.data); | |
5142db69 | 764 | cmdp->cb.data = NULL; |
f2561fda MM |
765 | if (n != (int)cmdp->cb.dlen) |
766 | return RESP_BAD; | |
767 | } else if (cmdp->cb.cont) { | |
95c53908 | 768 | if (cmdp->cb.cont(ctx, cmdp, cmd)) |
f2561fda MM |
769 | return RESP_BAD; |
770 | } else { | |
95c53908 | 771 | fprintf(stderr, "IMAP error: unexpected command continuation request\n"); |
f2561fda MM |
772 | return RESP_BAD; |
773 | } | |
95c53908 | 774 | if (socket_write(&imap->buf.sock, "\r\n", 2) != 2) |
f2561fda MM |
775 | return RESP_BAD; |
776 | if (!cmdp->cb.cont) | |
777 | imap->literal_pending = 0; | |
778 | if (!tcmd) | |
779 | return DRV_OK; | |
780 | } else { | |
95c53908 | 781 | tag = atoi(arg); |
f2561fda MM |
782 | for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next) |
783 | if (cmdp->tag == tag) | |
784 | goto gottag; | |
95c53908 | 785 | fprintf(stderr, "IMAP error: unexpected tag %s\n", arg); |
f2561fda | 786 | return RESP_BAD; |
9f1ad541 | 787 | gottag: |
f2561fda MM |
788 | if (!(*pcmdp = cmdp->next)) |
789 | imap->in_progress_append = pcmdp; | |
790 | imap->num_in_progress--; | |
791 | if (cmdp->cb.cont || cmdp->cb.data) | |
792 | imap->literal_pending = 0; | |
95c53908 RS |
793 | arg = next_arg(&cmd); |
794 | if (!strcmp("OK", arg)) | |
f2561fda MM |
795 | resp = DRV_OK; |
796 | else { | |
95c53908 RS |
797 | if (!strcmp("NO", arg)) { |
798 | if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */ | |
799 | p = strchr(cmdp->cmd, '"'); | |
28bea9e5 | 800 | if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) { |
f2561fda MM |
801 | resp = RESP_BAD; |
802 | goto normal; | |
803 | } | |
804 | /* not waiting here violates the spec, but a server that does not | |
805 | grok this nonetheless violates it too. */ | |
806 | cmdp->cb.create = 0; | |
95c53908 | 807 | if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) { |
f2561fda MM |
808 | resp = RESP_BAD; |
809 | goto normal; | |
810 | } | |
95c53908 RS |
811 | free(cmdp->cmd); |
812 | free(cmdp); | |
f2561fda MM |
813 | if (!tcmd) |
814 | return 0; /* ignored */ | |
815 | if (cmdp == tcmd) | |
816 | tcmd = ncmdp; | |
817 | continue; | |
818 | } | |
819 | resp = RESP_NO; | |
95c53908 | 820 | } else /*if (!strcmp("BAD", arg))*/ |
f2561fda | 821 | resp = RESP_BAD; |
95c53908 RS |
822 | fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n", |
823 | memcmp(cmdp->cmd, "LOGIN", 5) ? | |
f2561fda MM |
824 | cmdp->cmd : "LOGIN <user> <pass>", |
825 | arg, cmd ? cmd : ""); | |
826 | } | |
95c53908 | 827 | if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp) |
f2561fda | 828 | resp = resp2; |
9f1ad541 | 829 | normal: |
f2561fda | 830 | if (cmdp->cb.done) |
95c53908 RS |
831 | cmdp->cb.done(ctx, cmdp, resp); |
832 | free(cmdp->cb.data); | |
833 | free(cmdp->cmd); | |
834 | free(cmdp); | |
f2561fda MM |
835 | if (!tcmd || tcmd == cmdp) |
836 | return resp; | |
837 | } | |
838 | } | |
839 | /* not reached */ | |
840 | } | |
841 | ||
9f1ad541 | 842 | static void imap_close_server(struct imap_store *ictx) |
f2561fda | 843 | { |
9f1ad541 | 844 | struct imap *imap = ictx->imap; |
f2561fda | 845 | |
7a7796e9 | 846 | if (imap->buf.sock.fd[0] != -1) { |
95c53908 RS |
847 | imap_exec(ictx, NULL, "LOGOUT"); |
848 | socket_shutdown(&imap->buf.sock); | |
f2561fda | 849 | } |
95c53908 | 850 | free(imap); |
f2561fda MM |
851 | } |
852 | ||
fe47e1df | 853 | static void imap_close_store(struct imap_store *ctx) |
f2561fda | 854 | { |
fe47e1df | 855 | imap_close_server(ctx); |
95c53908 | 856 | free(ctx); |
f2561fda MM |
857 | } |
858 | ||
ae9c606e HM |
859 | #ifndef NO_OPENSSL |
860 | ||
861 | /* | |
862 | * hexchar() and cram() functions are based on the code from the isync | |
863 | * project (http://isync.sf.net/). | |
864 | */ | |
865 | static char hexchar(unsigned int b) | |
f2561fda | 866 | { |
ae9c606e | 867 | return b < 10 ? '0' + b : 'a' + (b - 10); |
f2561fda MM |
868 | } |
869 | ||
ae9c606e HM |
870 | #define ENCODED_SIZE(n) (4*((n+2)/3)) |
871 | static char *cram(const char *challenge_64, const char *user, const char *pass) | |
f2561fda | 872 | { |
ae9c606e HM |
873 | int i, resp_len, encoded_len, decoded_len; |
874 | HMAC_CTX hmac; | |
875 | unsigned char hash[16]; | |
876 | char hex[33]; | |
877 | char *response, *response_64, *challenge; | |
878 | ||
879 | /* | |
880 | * length of challenge_64 (i.e. base-64 encoded string) is a good | |
881 | * enough upper bound for challenge (decoded result). | |
882 | */ | |
883 | encoded_len = strlen(challenge_64); | |
884 | challenge = xmalloc(encoded_len); | |
885 | decoded_len = EVP_DecodeBlock((unsigned char *)challenge, | |
886 | (unsigned char *)challenge_64, encoded_len); | |
887 | if (decoded_len < 0) | |
888 | die("invalid challenge %s", challenge_64); | |
889 | HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5()); | |
890 | HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len); | |
891 | HMAC_Final(&hmac, hash, NULL); | |
892 | HMAC_CTX_cleanup(&hmac); | |
893 | ||
894 | hex[32] = 0; | |
895 | for (i = 0; i < 16; i++) { | |
896 | hex[2 * i] = hexchar((hash[i] >> 4) & 0xf); | |
897 | hex[2 * i + 1] = hexchar(hash[i] & 0xf); | |
898 | } | |
899 | ||
900 | /* response: "<user> <digest in hex>" */ | |
901 | resp_len = strlen(user) + 1 + strlen(hex) + 1; | |
902 | response = xmalloc(resp_len); | |
903 | sprintf(response, "%s %s", user, hex); | |
904 | ||
905 | response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1); | |
906 | encoded_len = EVP_EncodeBlock((unsigned char *)response_64, | |
907 | (unsigned char *)response, resp_len); | |
908 | if (encoded_len < 0) | |
909 | die("EVP_EncodeBlock error"); | |
910 | response_64[encoded_len] = '\0'; | |
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)) | |
82247e9b | 933 | return error("IMAP error: sending response failed"); |
ae9c606e HM |
934 | |
935 | free(response); | |
936 | ||
937 | return 0; | |
938 | } | |
939 | ||
fe47e1df | 940 | static struct imap_store *imap_open_store(struct imap_server_conf *srvc) |
f2561fda | 941 | { |
9f1ad541 JH |
942 | struct imap_store *ctx; |
943 | struct imap *imap; | |
f2561fda | 944 | char *arg, *rsp; |
c94d2dd0 | 945 | int s = -1, preauth; |
f2561fda | 946 | |
95c53908 | 947 | ctx = xcalloc(sizeof(*ctx), 1); |
f2561fda | 948 | |
95c53908 | 949 | ctx->imap = imap = xcalloc(sizeof(*imap), 1); |
7a7796e9 | 950 | imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1; |
f2561fda MM |
951 | imap->in_progress_append = &imap->in_progress; |
952 | ||
953 | /* open connection to IMAP server */ | |
954 | ||
955 | if (srvc->tunnel) { | |
ac0ba18d | 956 | const char *argv[] = { srvc->tunnel, NULL }; |
c2e86add | 957 | struct child_process tunnel = {NULL}; |
f2561fda | 958 | |
c94d2dd0 | 959 | imap_info("Starting tunnel '%s'... ", srvc->tunnel); |
f2561fda | 960 | |
c94d2dd0 | 961 | tunnel.argv = argv; |
ac0ba18d | 962 | tunnel.use_shell = 1; |
c94d2dd0 EFL |
963 | tunnel.in = -1; |
964 | tunnel.out = -1; | |
965 | if (start_command(&tunnel)) | |
966 | die("cannot start proxy %s", argv[0]); | |
f2561fda | 967 | |
c94d2dd0 EFL |
968 | imap->buf.sock.fd[0] = tunnel.out; |
969 | imap->buf.sock.fd[1] = tunnel.in; | |
f2561fda | 970 | |
95c53908 | 971 | imap_info("ok\n"); |
f2561fda | 972 | } else { |
94ad2437 BK |
973 | #ifndef NO_IPV6 |
974 | struct addrinfo hints, *ai0, *ai; | |
975 | int gai; | |
976 | char portstr[6]; | |
977 | ||
1702b138 | 978 | snprintf(portstr, sizeof(portstr), "%d", srvc->port); |
94ad2437 BK |
979 | |
980 | memset(&hints, 0, sizeof(hints)); | |
981 | hints.ai_socktype = SOCK_STREAM; | |
982 | hints.ai_protocol = IPPROTO_TCP; | |
f2561fda | 983 | |
94ad2437 BK |
984 | imap_info("Resolving %s... ", srvc->host); |
985 | gai = getaddrinfo(srvc->host, portstr, &hints, &ai); | |
986 | if (gai) { | |
987 | fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai)); | |
988 | goto bail; | |
f2561fda | 989 | } |
94ad2437 | 990 | imap_info("ok\n"); |
f2561fda | 991 | |
94ad2437 BK |
992 | for (ai0 = ai; ai; ai = ai->ai_next) { |
993 | char addr[NI_MAXHOST]; | |
f2561fda | 994 | |
94ad2437 BK |
995 | s = socket(ai->ai_family, ai->ai_socktype, |
996 | ai->ai_protocol); | |
997 | if (s < 0) | |
998 | continue; | |
f2561fda | 999 | |
94ad2437 BK |
1000 | getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, |
1001 | sizeof(addr), NULL, 0, NI_NUMERICHOST); | |
1002 | imap_info("Connecting to [%s]:%s... ", addr, portstr); | |
1003 | ||
1004 | if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) { | |
1005 | close(s); | |
1006 | s = -1; | |
1007 | perror("connect"); | |
1008 | continue; | |
1009 | } | |
1010 | ||
1011 | break; | |
1012 | } | |
1013 | freeaddrinfo(ai0); | |
1014 | #else /* NO_IPV6 */ | |
1015 | struct hostent *he; | |
1016 | struct sockaddr_in addr; | |
1017 | ||
95c53908 RS |
1018 | memset(&addr, 0, sizeof(addr)); |
1019 | addr.sin_port = htons(srvc->port); | |
f2561fda MM |
1020 | addr.sin_family = AF_INET; |
1021 | ||
95c53908 RS |
1022 | imap_info("Resolving %s... ", srvc->host); |
1023 | he = gethostbyname(srvc->host); | |
f2561fda | 1024 | if (!he) { |
95c53908 | 1025 | perror("gethostbyname"); |
f2561fda MM |
1026 | goto bail; |
1027 | } | |
95c53908 | 1028 | imap_info("ok\n"); |
f2561fda MM |
1029 | |
1030 | addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]); | |
1031 | ||
95c53908 | 1032 | s = socket(PF_INET, SOCK_STREAM, 0); |
f2561fda | 1033 | |
95c53908 RS |
1034 | imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port)); |
1035 | if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) { | |
1036 | close(s); | |
94ad2437 | 1037 | s = -1; |
95c53908 | 1038 | perror("connect"); |
94ad2437 BK |
1039 | } |
1040 | #endif | |
1041 | if (s < 0) { | |
1042 | fputs("Error: unable to connect to server.\n", stderr); | |
f2561fda MM |
1043 | goto bail; |
1044 | } | |
f2561fda | 1045 | |
7a7796e9 EFL |
1046 | imap->buf.sock.fd[0] = s; |
1047 | imap->buf.sock.fd[1] = dup(s); | |
f2561fda | 1048 | |
684ec6c6 RS |
1049 | if (srvc->use_ssl && |
1050 | ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) { | |
1051 | close(s); | |
1052 | goto bail; | |
1053 | } | |
95c53908 | 1054 | imap_info("ok\n"); |
f2561fda MM |
1055 | } |
1056 | ||
1057 | /* read the greeting string */ | |
95c53908 RS |
1058 | if (buffer_gets(&imap->buf, &rsp)) { |
1059 | fprintf(stderr, "IMAP error: no greeting response\n"); | |
f2561fda MM |
1060 | goto bail; |
1061 | } | |
95c53908 RS |
1062 | arg = next_arg(&rsp); |
1063 | if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) { | |
1064 | fprintf(stderr, "IMAP error: invalid greeting response\n"); | |
f2561fda MM |
1065 | goto bail; |
1066 | } | |
1067 | preauth = 0; | |
95c53908 | 1068 | if (!strcmp("PREAUTH", arg)) |
f2561fda | 1069 | preauth = 1; |
95c53908 RS |
1070 | else if (strcmp("OK", arg) != 0) { |
1071 | fprintf(stderr, "IMAP error: unknown greeting response\n"); | |
f2561fda MM |
1072 | goto bail; |
1073 | } | |
95c53908 RS |
1074 | parse_response_code(ctx, NULL, rsp); |
1075 | if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK) | |
f2561fda MM |
1076 | goto bail; |
1077 | ||
1078 | if (!preauth) { | |
684ec6c6 RS |
1079 | #ifndef NO_OPENSSL |
1080 | if (!srvc->use_ssl && CAP(STARTTLS)) { | |
d27da38a | 1081 | if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK) |
684ec6c6 RS |
1082 | goto bail; |
1083 | if (ssl_socket_connect(&imap->buf.sock, 1, | |
1084 | srvc->ssl_verify)) | |
1085 | goto bail; | |
1086 | /* capabilities may have changed, so get the new capabilities */ | |
d27da38a | 1087 | if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK) |
684ec6c6 RS |
1088 | goto bail; |
1089 | } | |
1090 | #endif | |
95c53908 | 1091 | imap_info("Logging in...\n"); |
f2561fda | 1092 | if (!srvc->user) { |
95c53908 | 1093 | fprintf(stderr, "Skipping server %s, no user\n", srvc->host); |
f2561fda MM |
1094 | goto bail; |
1095 | } | |
1096 | if (!srvc->pass) { | |
50d0158f JK |
1097 | struct strbuf prompt = STRBUF_INIT; |
1098 | strbuf_addf(&prompt, "Password (%s@%s): ", srvc->user, srvc->host); | |
1099 | arg = git_getpass(prompt.buf); | |
1100 | strbuf_release(&prompt); | |
f2561fda | 1101 | if (!*arg) { |
95c53908 | 1102 | fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host); |
f2561fda MM |
1103 | goto bail; |
1104 | } | |
1105 | /* | |
1106 | * getpass() returns a pointer to a static buffer. make a copy | |
1107 | * for long term storage. | |
1108 | */ | |
95c53908 | 1109 | srvc->pass = xstrdup(arg); |
f2561fda MM |
1110 | } |
1111 | if (CAP(NOLOGIN)) { | |
95c53908 | 1112 | fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host); |
f2561fda MM |
1113 | goto bail; |
1114 | } | |
ae9c606e HM |
1115 | |
1116 | if (srvc->auth_method) { | |
1117 | struct imap_cmd_cb cb; | |
1118 | ||
1119 | if (!strcmp(srvc->auth_method, "CRAM-MD5")) { | |
1120 | if (!CAP(AUTH_CRAM_MD5)) { | |
1121 | fprintf(stderr, "You specified" | |
1122 | "CRAM-MD5 as authentication method, " | |
1123 | "but %s doesn't support it.\n", srvc->host); | |
1124 | goto bail; | |
1125 | } | |
1126 | /* CRAM-MD5 */ | |
1127 | ||
1128 | memset(&cb, 0, sizeof(cb)); | |
1129 | cb.cont = auth_cram_md5; | |
1130 | if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) { | |
1131 | fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n"); | |
1132 | goto bail; | |
1133 | } | |
1134 | } else { | |
1135 | fprintf(stderr, "Unknown authentication method:%s\n", srvc->host); | |
1136 | goto bail; | |
1137 | } | |
1138 | } else { | |
10439d89 CW |
1139 | if (!imap->buf.sock.ssl) |
1140 | imap_warn("*** IMAP Warning *** Password is being " | |
1141 | "sent in the clear\n"); | |
ae9c606e HM |
1142 | if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) { |
1143 | fprintf(stderr, "IMAP error: LOGIN failed\n"); | |
1144 | goto bail; | |
1145 | } | |
f2561fda MM |
1146 | } |
1147 | } /* !preauth */ | |
1148 | ||
1149 | ctx->prefix = ""; | |
fe47e1df | 1150 | return ctx; |
f2561fda | 1151 | |
9f1ad541 | 1152 | bail: |
fe47e1df | 1153 | imap_close_store(ctx); |
5142db69 | 1154 | return NULL; |
f2561fda MM |
1155 | } |
1156 | ||
3691031c MH |
1157 | /* |
1158 | * Insert CR characters as necessary in *msg to ensure that every LF | |
1159 | * character in *msg is preceded by a CR. | |
1160 | */ | |
f035ab62 | 1161 | static void lf_to_crlf(struct strbuf *msg) |
f2561fda | 1162 | { |
67d17630 | 1163 | char *new; |
3691031c MH |
1164 | size_t i, j; |
1165 | char lastc; | |
1166 | ||
1167 | /* First pass: tally, in j, the size of the new string: */ | |
1168 | for (i = j = 0, lastc = '\0'; i < msg->len; i++) { | |
1169 | if (msg->buf[i] == '\n' && lastc != '\r') | |
1170 | j++; /* a CR will need to be added here */ | |
1171 | lastc = msg->buf[i]; | |
1172 | j++; | |
f2561fda | 1173 | } |
67d17630 | 1174 | |
3691031c MH |
1175 | new = xmalloc(j + 1); |
1176 | ||
1177 | /* | |
1178 | * Second pass: write the new string. Note that this loop is | |
1179 | * otherwise identical to the first pass. | |
1180 | */ | |
1181 | for (i = j = 0, lastc = '\0'; i < msg->len; i++) { | |
1182 | if (msg->buf[i] == '\n' && lastc != '\r') | |
67d17630 | 1183 | new[j++] = '\r'; |
3691031c | 1184 | lastc = new[j++] = msg->buf[i]; |
f2561fda | 1185 | } |
3691031c | 1186 | strbuf_attach(msg, new, j, j + 1); |
67d17630 | 1187 | } |
f2561fda | 1188 | |
f035ab62 MH |
1189 | /* |
1190 | * Store msg to IMAP. Also detach and free the data from msg->data, | |
1191 | * leaving msg->data empty. | |
1192 | */ | |
fe47e1df | 1193 | static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg) |
f2561fda | 1194 | { |
9f1ad541 | 1195 | struct imap *imap = ctx->imap; |
f2561fda | 1196 | struct imap_cmd_cb cb; |
f2561fda | 1197 | const char *prefix, *box; |
719125c5 | 1198 | int ret; |
f2561fda | 1199 | |
cbc60761 | 1200 | lf_to_crlf(msg); |
95c53908 | 1201 | memset(&cb, 0, sizeof(cb)); |
f2561fda | 1202 | |
cbc60761 MH |
1203 | cb.dlen = msg->len; |
1204 | cb.data = strbuf_detach(msg, NULL); | |
f2561fda | 1205 | |
636fd66b | 1206 | box = ctx->name; |
3a7cba95 JK |
1207 | prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix; |
1208 | cb.create = 0; | |
719125c5 | 1209 | ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box); |
f2561fda MM |
1210 | imap->caps = imap->rcaps; |
1211 | if (ret != DRV_OK) | |
1212 | return ret; | |
f2561fda MM |
1213 | |
1214 | return DRV_OK; | |
1215 | } | |
1216 | ||
f035ab62 | 1217 | static void wrap_in_html(struct strbuf *msg) |
c64d84f1 JW |
1218 | { |
1219 | struct strbuf buf = STRBUF_INIT; | |
c64d84f1 JW |
1220 | static char *content_type = "Content-Type: text/html;\n"; |
1221 | static char *pre_open = "<pre>\n"; | |
1222 | static char *pre_close = "</pre>\n"; | |
118a68f9 MH |
1223 | const char *body = strstr(msg->buf, "\n\n"); |
1224 | ||
1225 | if (!body) | |
1226 | return; /* Headers but no body; no wrapping needed */ | |
1227 | ||
1228 | body += 2; | |
1229 | ||
1230 | strbuf_add(&buf, msg->buf, body - msg->buf - 1); | |
1231 | strbuf_addstr(&buf, content_type); | |
1232 | strbuf_addch(&buf, '\n'); | |
1233 | strbuf_addstr(&buf, pre_open); | |
1234 | strbuf_addstr_xml_quoted(&buf, body); | |
c64d84f1 | 1235 | strbuf_addstr(&buf, pre_close); |
118a68f9 | 1236 | |
f035ab62 MH |
1237 | strbuf_release(msg); |
1238 | *msg = buf; | |
c64d84f1 JW |
1239 | } |
1240 | ||
f2561fda MM |
1241 | #define CHUNKSIZE 0x1000 |
1242 | ||
3a34e626 | 1243 | static int read_message(FILE *f, struct strbuf *all_msgs) |
f2561fda | 1244 | { |
635d043f | 1245 | do { |
3a34e626 | 1246 | if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0) |
f2561fda | 1247 | break; |
635d043f PH |
1248 | } while (!feof(f)); |
1249 | ||
6360bee4 | 1250 | return ferror(f) ? -1 : 0; |
f2561fda MM |
1251 | } |
1252 | ||
3a34e626 | 1253 | static int count_messages(struct strbuf *all_msgs) |
f2561fda MM |
1254 | { |
1255 | int count = 0; | |
3a34e626 | 1256 | char *p = all_msgs->buf; |
f2561fda MM |
1257 | |
1258 | while (1) { | |
1968d77d | 1259 | if (!prefixcmp(p, "From ")) { |
4916c8f9 RR |
1260 | p = strstr(p+5, "\nFrom: "); |
1261 | if (!p) break; | |
1262 | p = strstr(p+7, "\nDate: "); | |
1263 | if (!p) break; | |
1264 | p = strstr(p+7, "\nSubject: "); | |
1265 | if (!p) break; | |
1266 | p += 10; | |
f2561fda | 1267 | count++; |
f2561fda | 1268 | } |
95c53908 | 1269 | p = strstr(p+5, "\nFrom "); |
f2561fda MM |
1270 | if (!p) |
1271 | break; | |
1272 | p++; | |
1273 | } | |
1274 | return count; | |
1275 | } | |
1276 | ||
f035ab62 MH |
1277 | /* |
1278 | * Copy the next message from all_msgs, starting at offset *ofs, to | |
1279 | * msg. Update *ofs to the start of the following message. Return | |
1280 | * true iff a message was successfully copied. | |
1281 | */ | |
1282 | static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs) | |
f2561fda MM |
1283 | { |
1284 | char *p, *data; | |
f035ab62 | 1285 | size_t len; |
f2561fda | 1286 | |
f2561fda MM |
1287 | if (*ofs >= all_msgs->len) |
1288 | return 0; | |
1289 | ||
3a34e626 | 1290 | data = &all_msgs->buf[*ofs]; |
f035ab62 | 1291 | len = all_msgs->len - *ofs; |
f2561fda | 1292 | |
f035ab62 | 1293 | if (len < 5 || prefixcmp(data, "From ")) |
f2561fda MM |
1294 | return 0; |
1295 | ||
95c53908 | 1296 | p = strchr(data, '\n'); |
e0b08307 | 1297 | if (p) { |
f035ab62 MH |
1298 | p++; |
1299 | len -= p - data; | |
1300 | *ofs += p - data; | |
e0b08307 MA |
1301 | data = p; |
1302 | } | |
1303 | ||
95c53908 | 1304 | p = strstr(data, "\nFrom "); |
f2561fda | 1305 | if (p) |
f035ab62 | 1306 | len = &p[1] - data; |
f2561fda | 1307 | |
f035ab62 MH |
1308 | strbuf_add(msg, data, len); |
1309 | *ofs += len; | |
a6080a0a | 1310 | return 1; |
f2561fda MM |
1311 | } |
1312 | ||
f2561fda MM |
1313 | static char *imap_folder; |
1314 | ||
95c53908 | 1315 | static int git_imap_config(const char *key, const char *val, void *cb) |
f2561fda MM |
1316 | { |
1317 | char imap_key[] = "imap."; | |
1318 | ||
95c53908 | 1319 | if (strncmp(key, imap_key, sizeof imap_key - 1)) |
f2561fda | 1320 | return 0; |
3c17c34a | 1321 | |
f2561fda MM |
1322 | key += sizeof imap_key - 1; |
1323 | ||
ace706e2 JH |
1324 | /* check booleans first, and barf on others */ |
1325 | if (!strcmp("sslverify", key)) | |
1326 | server.ssl_verify = git_config_bool(key, val); | |
1327 | else if (!strcmp("preformattedhtml", key)) | |
1328 | server.use_html = git_config_bool(key, val); | |
1329 | else if (!val) | |
1330 | return config_error_nonbool(key); | |
1331 | ||
95c53908 RS |
1332 | if (!strcmp("folder", key)) { |
1333 | imap_folder = xstrdup(val); | |
1334 | } else if (!strcmp("host", key)) { | |
684ec6c6 RS |
1335 | if (!prefixcmp(val, "imap:")) |
1336 | val += 5; | |
1337 | else if (!prefixcmp(val, "imaps:")) { | |
1338 | val += 6; | |
1339 | server.use_ssl = 1; | |
f2561fda | 1340 | } |
1968d77d | 1341 | if (!prefixcmp(val, "//")) |
f2561fda | 1342 | val += 2; |
95c53908 | 1343 | server.host = xstrdup(val); |
9f1ad541 | 1344 | } else if (!strcmp("user", key)) |
95c53908 RS |
1345 | server.user = xstrdup(val); |
1346 | else if (!strcmp("pass", key)) | |
1347 | server.pass = xstrdup(val); | |
1348 | else if (!strcmp("port", key)) | |
1349 | server.port = git_config_int(key, val); | |
1350 | else if (!strcmp("tunnel", key)) | |
1351 | server.tunnel = xstrdup(val); | |
ae9c606e HM |
1352 | else if (!strcmp("authmethod", key)) |
1353 | server.auth_method = xstrdup(val); | |
1354 | ||
f2561fda MM |
1355 | return 0; |
1356 | } | |
1357 | ||
95c53908 | 1358 | int main(int argc, char **argv) |
f2561fda | 1359 | { |
3a34e626 | 1360 | struct strbuf all_msgs = STRBUF_INIT; |
cbc60761 | 1361 | struct strbuf msg = STRBUF_INIT; |
fe47e1df | 1362 | struct imap_store *ctx = NULL; |
f2561fda MM |
1363 | int ofs = 0; |
1364 | int r; | |
1365 | int total, n = 0; | |
a0406b94 | 1366 | int nongit_ok; |
f2561fda | 1367 | |
2fb3f6db | 1368 | git_extract_argv0_path(argv[0]); |
f2561fda | 1369 | |
5e9637c6 ÆAB |
1370 | git_setup_gettext(); |
1371 | ||
9a2861e3 JN |
1372 | if (argc != 1) |
1373 | usage(imap_send_usage); | |
f2561fda | 1374 | |
a0406b94 | 1375 | setup_git_directory_gently(&nongit_ok); |
ef90d6d4 | 1376 | git_config(git_imap_config, NULL); |
f2561fda | 1377 | |
684ec6c6 RS |
1378 | if (!server.port) |
1379 | server.port = server.use_ssl ? 993 : 143; | |
f2561fda MM |
1380 | |
1381 | if (!imap_folder) { | |
95c53908 | 1382 | fprintf(stderr, "no imap store specified\n"); |
f2561fda MM |
1383 | return 1; |
1384 | } | |
5b67b8e2 | 1385 | if (!server.host) { |
34b5cd1f | 1386 | if (!server.tunnel) { |
95c53908 | 1387 | fprintf(stderr, "no imap host specified\n"); |
34b5cd1f JK |
1388 | return 1; |
1389 | } | |
1390 | server.host = "tunnel"; | |
5b67b8e2 | 1391 | } |
f2561fda MM |
1392 | |
1393 | /* read the messages */ | |
6360bee4 MH |
1394 | if (read_message(stdin, &all_msgs)) { |
1395 | fprintf(stderr, "error reading input\n"); | |
1396 | return 1; | |
1397 | } | |
1398 | ||
1399 | if (all_msgs.len == 0) { | |
9f1ad541 | 1400 | fprintf(stderr, "nothing to send\n"); |
f2561fda MM |
1401 | return 1; |
1402 | } | |
1403 | ||
95c53908 | 1404 | total = count_messages(&all_msgs); |
1cd88cc9 | 1405 | if (!total) { |
9f1ad541 | 1406 | fprintf(stderr, "no messages to send\n"); |
f2561fda MM |
1407 | return 1; |
1408 | } | |
1409 | ||
1410 | /* write it to the imap server */ | |
95c53908 | 1411 | ctx = imap_open_store(&server); |
f2561fda | 1412 | if (!ctx) { |
9f1ad541 | 1413 | fprintf(stderr, "failed to open store\n"); |
f2561fda MM |
1414 | return 1; |
1415 | } | |
1416 | ||
9f1ad541 | 1417 | fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : ""); |
636fd66b | 1418 | ctx->name = imap_folder; |
f2561fda MM |
1419 | while (1) { |
1420 | unsigned percent = n * 100 / total; | |
f035ab62 | 1421 | |
95c53908 | 1422 | fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total); |
cbc60761 | 1423 | if (!split_msg(&all_msgs, &msg, &ofs)) |
f2561fda | 1424 | break; |
c64d84f1 | 1425 | if (server.use_html) |
cbc60761 | 1426 | wrap_in_html(&msg); |
3a7cba95 | 1427 | r = imap_store_msg(ctx, &msg); |
9f1ad541 | 1428 | if (r != DRV_OK) |
f2561fda | 1429 | break; |
f2561fda MM |
1430 | n++; |
1431 | } | |
95c53908 | 1432 | fprintf(stderr, "\n"); |
f2561fda | 1433 | |
95c53908 | 1434 | imap_close_store(ctx); |
f2561fda MM |
1435 | |
1436 | return 0; | |
1437 | } |