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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 | ||
698a1ec4 JH |
307 | #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME |
308 | /* | |
309 | * SNI (RFC4366) | |
310 | * OpenSSL does not document this function, but the implementation | |
311 | * returns 1 on success, 0 on failure after calling SSLerr(). | |
312 | */ | |
313 | ret = SSL_set_tlsext_host_name(sock->ssl, server.host); | |
314 | if (ret != 1) | |
315 | warning("SSL_set_tlsext_host_name(%s) failed.", server.host); | |
316 | #endif | |
317 | ||
684ec6c6 RS |
318 | ret = SSL_connect(sock->ssl); |
319 | if (ret <= 0) { | |
320 | socket_perror("SSL_connect", sock, ret); | |
321 | return -1; | |
322 | } | |
323 | ||
b62fb077 OB |
324 | if (verify) { |
325 | /* make sure the hostname matches that of the certificate */ | |
326 | cert = SSL_get_peer_certificate(sock->ssl); | |
327 | if (!cert) | |
328 | return error("unable to get peer certificate."); | |
329 | if (verify_hostname(cert, server.host) < 0) | |
330 | return -1; | |
331 | } | |
332 | ||
684ec6c6 | 333 | return 0; |
f2561fda | 334 | } |
1e1fe529 | 335 | #endif |
f2561fda | 336 | |
9f1ad541 | 337 | static int socket_read(struct imap_socket *sock, char *buf, int len) |
f2561fda | 338 | { |
684ec6c6 RS |
339 | ssize_t n; |
340 | #ifndef NO_OPENSSL | |
341 | if (sock->ssl) | |
342 | n = SSL_read(sock->ssl, buf, len); | |
343 | else | |
344 | #endif | |
7a7796e9 | 345 | n = xread(sock->fd[0], buf, len); |
f2561fda | 346 | if (n <= 0) { |
95c53908 | 347 | socket_perror("read", sock, n); |
7a7796e9 EFL |
348 | close(sock->fd[0]); |
349 | close(sock->fd[1]); | |
350 | sock->fd[0] = sock->fd[1] = -1; | |
f2561fda MM |
351 | } |
352 | return n; | |
353 | } | |
354 | ||
9f1ad541 | 355 | static int socket_write(struct imap_socket *sock, const char *buf, int len) |
f2561fda | 356 | { |
684ec6c6 RS |
357 | int n; |
358 | #ifndef NO_OPENSSL | |
359 | if (sock->ssl) | |
360 | n = SSL_write(sock->ssl, buf, len); | |
361 | else | |
362 | #endif | |
7a7796e9 | 363 | n = write_in_full(sock->fd[1], buf, len); |
f2561fda | 364 | if (n != len) { |
95c53908 | 365 | socket_perror("write", sock, n); |
7a7796e9 EFL |
366 | close(sock->fd[0]); |
367 | close(sock->fd[1]); | |
368 | sock->fd[0] = sock->fd[1] = -1; | |
f2561fda MM |
369 | } |
370 | return n; | |
371 | } | |
372 | ||
9f1ad541 | 373 | static void socket_shutdown(struct imap_socket *sock) |
684ec6c6 RS |
374 | { |
375 | #ifndef NO_OPENSSL | |
376 | if (sock->ssl) { | |
377 | SSL_shutdown(sock->ssl); | |
378 | SSL_free(sock->ssl); | |
379 | } | |
380 | #endif | |
7a7796e9 EFL |
381 | close(sock->fd[0]); |
382 | close(sock->fd[1]); | |
684ec6c6 RS |
383 | } |
384 | ||
f2561fda | 385 | /* simple line buffering */ |
9f1ad541 | 386 | static int buffer_gets(struct imap_buffer *b, char **s) |
f2561fda MM |
387 | { |
388 | int n; | |
389 | int start = b->offset; | |
390 | ||
391 | *s = b->buf + start; | |
392 | ||
393 | for (;;) { | |
394 | /* make sure we have enough data to read the \r\n sequence */ | |
395 | if (b->offset + 1 >= b->bytes) { | |
396 | if (start) { | |
397 | /* shift down used bytes */ | |
398 | *s = b->buf; | |
399 | ||
95c53908 | 400 | assert(start <= b->bytes); |
f2561fda MM |
401 | n = b->bytes - start; |
402 | ||
403 | if (n) | |
173a9cbe | 404 | memmove(b->buf, b->buf + start, n); |
f2561fda MM |
405 | b->offset -= start; |
406 | b->bytes = n; | |
407 | start = 0; | |
408 | } | |
409 | ||
95c53908 RS |
410 | n = socket_read(&b->sock, b->buf + b->bytes, |
411 | sizeof(b->buf) - b->bytes); | |
f2561fda MM |
412 | |
413 | if (n <= 0) | |
414 | return -1; | |
415 | ||
416 | b->bytes += n; | |
417 | } | |
418 | ||
419 | if (b->buf[b->offset] == '\r') { | |
95c53908 | 420 | assert(b->offset + 1 < b->bytes); |
f2561fda MM |
421 | if (b->buf[b->offset + 1] == '\n') { |
422 | b->buf[b->offset] = 0; /* terminate the string */ | |
423 | b->offset += 2; /* next line */ | |
424 | if (Verbose) | |
95c53908 | 425 | puts(*s); |
f2561fda MM |
426 | return 0; |
427 | } | |
428 | } | |
429 | ||
430 | b->offset++; | |
431 | } | |
432 | /* not reached */ | |
433 | } | |
434 | ||
95c53908 | 435 | static void imap_info(const char *msg, ...) |
f2561fda MM |
436 | { |
437 | va_list va; | |
438 | ||
439 | if (!Quiet) { | |
95c53908 RS |
440 | va_start(va, msg); |
441 | vprintf(msg, va); | |
442 | va_end(va); | |
443 | fflush(stdout); | |
f2561fda MM |
444 | } |
445 | } | |
446 | ||
95c53908 | 447 | static void imap_warn(const char *msg, ...) |
f2561fda MM |
448 | { |
449 | va_list va; | |
450 | ||
451 | if (Quiet < 2) { | |
95c53908 RS |
452 | va_start(va, msg); |
453 | vfprintf(stderr, msg, va); | |
454 | va_end(va); | |
f2561fda MM |
455 | } |
456 | } | |
457 | ||
95c53908 | 458 | static char *next_arg(char **s) |
f2561fda MM |
459 | { |
460 | char *ret; | |
461 | ||
462 | if (!s || !*s) | |
5142db69 | 463 | return NULL; |
95c53908 | 464 | while (isspace((unsigned char) **s)) |
f2561fda MM |
465 | (*s)++; |
466 | if (!**s) { | |
5142db69 RS |
467 | *s = NULL; |
468 | return NULL; | |
f2561fda MM |
469 | } |
470 | if (**s == '"') { | |
471 | ++*s; | |
472 | ret = *s; | |
95c53908 | 473 | *s = strchr(*s, '"'); |
f2561fda MM |
474 | } else { |
475 | ret = *s; | |
95c53908 | 476 | while (**s && !isspace((unsigned char) **s)) |
f2561fda MM |
477 | (*s)++; |
478 | } | |
479 | if (*s) { | |
480 | if (**s) | |
481 | *(*s)++ = 0; | |
482 | if (!**s) | |
5142db69 | 483 | *s = NULL; |
f2561fda MM |
484 | } |
485 | return ret; | |
486 | } | |
487 | ||
95c53908 | 488 | static int nfsnprintf(char *buf, int blen, const char *fmt, ...) |
f2561fda MM |
489 | { |
490 | int ret; | |
491 | va_list va; | |
492 | ||
95c53908 RS |
493 | va_start(va, fmt); |
494 | if (blen <= 0 || (unsigned)(ret = vsnprintf(buf, blen, fmt, va)) >= (unsigned)blen) | |
d7530708 | 495 | die("Fatal: buffer too small. Please report a bug."); |
95c53908 | 496 | va_end(va); |
f2561fda MM |
497 | return ret; |
498 | } | |
499 | ||
9f1ad541 | 500 | static struct imap_cmd *v_issue_imap_cmd(struct imap_store *ctx, |
95c53908 RS |
501 | struct imap_cmd_cb *cb, |
502 | const char *fmt, va_list ap) | |
f2561fda | 503 | { |
9f1ad541 | 504 | struct imap *imap = ctx->imap; |
f2561fda MM |
505 | struct imap_cmd *cmd; |
506 | int n, bufl; | |
507 | char buf[1024]; | |
508 | ||
95c53908 RS |
509 | cmd = xmalloc(sizeof(struct imap_cmd)); |
510 | nfvasprintf(&cmd->cmd, fmt, ap); | |
f2561fda MM |
511 | cmd->tag = ++imap->nexttag; |
512 | ||
513 | if (cb) | |
514 | cmd->cb = *cb; | |
515 | else | |
95c53908 | 516 | memset(&cmd->cb, 0, sizeof(cmd->cb)); |
f2561fda MM |
517 | |
518 | while (imap->literal_pending) | |
95c53908 | 519 | get_cmd_result(ctx, NULL); |
f2561fda | 520 | |
1702b138 ÆAB |
521 | if (!cmd->cb.data) |
522 | bufl = nfsnprintf(buf, sizeof(buf), "%d %s\r\n", cmd->tag, cmd->cmd); | |
523 | else | |
524 | bufl = nfsnprintf(buf, sizeof(buf), "%d %s{%d%s}\r\n", | |
525 | cmd->tag, cmd->cmd, cmd->cb.dlen, | |
526 | CAP(LITERALPLUS) ? "+" : ""); | |
f2561fda | 527 | |
f2561fda MM |
528 | if (Verbose) { |
529 | if (imap->num_in_progress) | |
95c53908 RS |
530 | printf("(%d in progress) ", imap->num_in_progress); |
531 | if (memcmp(cmd->cmd, "LOGIN", 5)) | |
532 | printf(">>> %s", buf); | |
f2561fda | 533 | else |
95c53908 | 534 | printf(">>> %d LOGIN <user> <pass>\n", cmd->tag); |
f2561fda | 535 | } |
95c53908 RS |
536 | if (socket_write(&imap->buf.sock, buf, bufl) != bufl) { |
537 | free(cmd->cmd); | |
538 | free(cmd); | |
8e0f7003 | 539 | if (cb) |
95c53908 | 540 | free(cb->data); |
f2561fda MM |
541 | return NULL; |
542 | } | |
543 | if (cmd->cb.data) { | |
544 | if (CAP(LITERALPLUS)) { | |
95c53908 RS |
545 | n = socket_write(&imap->buf.sock, cmd->cb.data, cmd->cb.dlen); |
546 | free(cmd->cb.data); | |
f2561fda | 547 | if (n != cmd->cb.dlen || |
8e76bf3f | 548 | socket_write(&imap->buf.sock, "\r\n", 2) != 2) { |
95c53908 RS |
549 | free(cmd->cmd); |
550 | free(cmd); | |
f2561fda MM |
551 | return NULL; |
552 | } | |
5142db69 | 553 | cmd->cb.data = NULL; |
f2561fda MM |
554 | } else |
555 | imap->literal_pending = 1; | |
556 | } else if (cmd->cb.cont) | |
557 | imap->literal_pending = 1; | |
5142db69 | 558 | cmd->next = NULL; |
f2561fda MM |
559 | *imap->in_progress_append = cmd; |
560 | imap->in_progress_append = &cmd->next; | |
561 | imap->num_in_progress++; | |
562 | return cmd; | |
563 | } | |
564 | ||
28bea9e5 | 565 | __attribute__((format (printf, 3, 4))) |
9f1ad541 | 566 | static struct imap_cmd *issue_imap_cmd(struct imap_store *ctx, |
95c53908 RS |
567 | struct imap_cmd_cb *cb, |
568 | const char *fmt, ...) | |
f2561fda MM |
569 | { |
570 | struct imap_cmd *ret; | |
571 | va_list ap; | |
572 | ||
95c53908 RS |
573 | va_start(ap, fmt); |
574 | ret = v_issue_imap_cmd(ctx, cb, fmt, ap); | |
575 | va_end(ap); | |
f2561fda MM |
576 | return ret; |
577 | } | |
578 | ||
28bea9e5 | 579 | __attribute__((format (printf, 3, 4))) |
9f1ad541 | 580 | static int imap_exec(struct imap_store *ctx, struct imap_cmd_cb *cb, |
95c53908 | 581 | const char *fmt, ...) |
f2561fda MM |
582 | { |
583 | va_list ap; | |
584 | struct imap_cmd *cmdp; | |
585 | ||
95c53908 RS |
586 | va_start(ap, fmt); |
587 | cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap); | |
588 | va_end(ap); | |
f2561fda MM |
589 | if (!cmdp) |
590 | return RESP_BAD; | |
591 | ||
95c53908 | 592 | return get_cmd_result(ctx, cmdp); |
f2561fda MM |
593 | } |
594 | ||
28bea9e5 | 595 | __attribute__((format (printf, 3, 4))) |
9f1ad541 | 596 | static int imap_exec_m(struct imap_store *ctx, struct imap_cmd_cb *cb, |
95c53908 | 597 | const char *fmt, ...) |
f2561fda MM |
598 | { |
599 | va_list ap; | |
600 | struct imap_cmd *cmdp; | |
601 | ||
95c53908 RS |
602 | va_start(ap, fmt); |
603 | cmdp = v_issue_imap_cmd(ctx, cb, fmt, ap); | |
604 | va_end(ap); | |
f2561fda MM |
605 | if (!cmdp) |
606 | return DRV_STORE_BAD; | |
607 | ||
95c53908 | 608 | switch (get_cmd_result(ctx, cmdp)) { |
f2561fda MM |
609 | case RESP_BAD: return DRV_STORE_BAD; |
610 | case RESP_NO: return DRV_MSG_BAD; | |
611 | default: return DRV_OK; | |
612 | } | |
613 | } | |
614 | ||
3648b4d9 | 615 | static int skip_imap_list_l(char **sp, int level) |
f2561fda | 616 | { |
3648b4d9 | 617 | char *s = *sp; |
f2561fda MM |
618 | |
619 | for (;;) { | |
95c53908 | 620 | while (isspace((unsigned char)*s)) |
f2561fda MM |
621 | s++; |
622 | if (level && *s == ')') { | |
623 | s++; | |
624 | break; | |
625 | } | |
f2561fda MM |
626 | if (*s == '(') { |
627 | /* sublist */ | |
628 | s++; | |
3648b4d9 | 629 | if (skip_imap_list_l(&s, level + 1)) |
f2561fda MM |
630 | goto bail; |
631 | } else if (*s == '"') { | |
632 | /* quoted string */ | |
633 | s++; | |
f2561fda MM |
634 | for (; *s != '"'; s++) |
635 | if (!*s) | |
636 | goto bail; | |
f2561fda | 637 | s++; |
f2561fda MM |
638 | } else { |
639 | /* atom */ | |
95c53908 | 640 | for (; *s && !isspace((unsigned char)*s); s++) |
f2561fda MM |
641 | if (level && *s == ')') |
642 | break; | |
f2561fda MM |
643 | } |
644 | ||
645 | if (!level) | |
646 | break; | |
647 | if (!*s) | |
648 | goto bail; | |
649 | } | |
650 | *sp = s; | |
f2561fda MM |
651 | return 0; |
652 | ||
9f1ad541 | 653 | bail: |
f2561fda MM |
654 | return -1; |
655 | } | |
656 | ||
3648b4d9 | 657 | static void skip_list(char **sp) |
f2561fda | 658 | { |
3648b4d9 | 659 | skip_imap_list_l(sp, 0); |
f2561fda MM |
660 | } |
661 | ||
9f1ad541 | 662 | static void parse_capability(struct imap *imap, char *cmd) |
f2561fda MM |
663 | { |
664 | char *arg; | |
665 | unsigned i; | |
666 | ||
667 | imap->caps = 0x80000000; | |
95c53908 | 668 | while ((arg = next_arg(&cmd))) |
f2561fda | 669 | for (i = 0; i < ARRAY_SIZE(cap_list); i++) |
95c53908 | 670 | if (!strcmp(cap_list[i], arg)) |
f2561fda MM |
671 | imap->caps |= 1 << i; |
672 | imap->rcaps = imap->caps; | |
673 | } | |
674 | ||
9f1ad541 | 675 | static int parse_response_code(struct imap_store *ctx, struct imap_cmd_cb *cb, |
95c53908 | 676 | char *s) |
f2561fda | 677 | { |
9f1ad541 | 678 | struct imap *imap = ctx->imap; |
f2561fda MM |
679 | char *arg, *p; |
680 | ||
681 | if (*s != '[') | |
682 | return RESP_OK; /* no response code */ | |
683 | s++; | |
95c53908 RS |
684 | if (!(p = strchr(s, ']'))) { |
685 | fprintf(stderr, "IMAP error: malformed response code\n"); | |
f2561fda MM |
686 | return RESP_BAD; |
687 | } | |
688 | *p++ = 0; | |
95c53908 RS |
689 | arg = next_arg(&s); |
690 | if (!strcmp("UIDVALIDITY", arg)) { | |
636fd66b | 691 | if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg))) { |
95c53908 | 692 | fprintf(stderr, "IMAP error: malformed UIDVALIDITY status\n"); |
f2561fda MM |
693 | return RESP_BAD; |
694 | } | |
95c53908 RS |
695 | } else if (!strcmp("UIDNEXT", arg)) { |
696 | if (!(arg = next_arg(&s)) || !(imap->uidnext = atoi(arg))) { | |
697 | fprintf(stderr, "IMAP error: malformed NEXTUID status\n"); | |
f2561fda MM |
698 | return RESP_BAD; |
699 | } | |
95c53908 RS |
700 | } else if (!strcmp("CAPABILITY", arg)) { |
701 | parse_capability(imap, s); | |
702 | } else if (!strcmp("ALERT", arg)) { | |
f2561fda MM |
703 | /* RFC2060 says that these messages MUST be displayed |
704 | * to the user | |
705 | */ | |
95c53908 RS |
706 | for (; isspace((unsigned char)*p); p++); |
707 | fprintf(stderr, "*** IMAP ALERT *** %s\n", p); | |
708 | } else if (cb && cb->ctx && !strcmp("APPENDUID", arg)) { | |
636fd66b | 709 | if (!(arg = next_arg(&s)) || !(ctx->uidvalidity = atoi(arg)) || |
9f1ad541 | 710 | !(arg = next_arg(&s)) || !(*(int *)cb->ctx = atoi(arg))) { |
95c53908 | 711 | fprintf(stderr, "IMAP error: malformed APPENDUID status\n"); |
f2561fda MM |
712 | return RESP_BAD; |
713 | } | |
714 | } | |
715 | return RESP_OK; | |
716 | } | |
717 | ||
9f1ad541 | 718 | static int get_cmd_result(struct imap_store *ctx, struct imap_cmd *tcmd) |
f2561fda | 719 | { |
9f1ad541 | 720 | struct imap *imap = ctx->imap; |
f2561fda MM |
721 | struct imap_cmd *cmdp, **pcmdp, *ncmdp; |
722 | char *cmd, *arg, *arg1, *p; | |
723 | int n, resp, resp2, tag; | |
724 | ||
725 | for (;;) { | |
95c53908 | 726 | if (buffer_gets(&imap->buf, &cmd)) |
f2561fda MM |
727 | return RESP_BAD; |
728 | ||
95c53908 | 729 | arg = next_arg(&cmd); |
f2561fda | 730 | if (*arg == '*') { |
95c53908 | 731 | arg = next_arg(&cmd); |
f2561fda | 732 | if (!arg) { |
95c53908 | 733 | fprintf(stderr, "IMAP error: unable to parse untagged response\n"); |
f2561fda MM |
734 | return RESP_BAD; |
735 | } | |
736 | ||
95c53908 | 737 | if (!strcmp("NAMESPACE", arg)) { |
3648b4d9 MH |
738 | /* rfc2342 NAMESPACE response. */ |
739 | skip_list(&cmd); /* Personal mailboxes */ | |
740 | skip_list(&cmd); /* Others' mailboxes */ | |
741 | skip_list(&cmd); /* Shared mailboxes */ | |
95c53908 RS |
742 | } else if (!strcmp("OK", arg) || !strcmp("BAD", arg) || |
743 | !strcmp("NO", arg) || !strcmp("BYE", arg)) { | |
744 | if ((resp = parse_response_code(ctx, NULL, cmd)) != RESP_OK) | |
f2561fda | 745 | return resp; |
1efee7ff | 746 | } else if (!strcmp("CAPABILITY", arg)) { |
95c53908 | 747 | parse_capability(imap, cmd); |
1efee7ff MH |
748 | } else if ((arg1 = next_arg(&cmd))) { |
749 | ; /* | |
750 | * Unhandled response-data with at least two words. | |
751 | * Ignore it. | |
752 | * | |
753 | * NEEDSWORK: Previously this case handled '<num> EXISTS' | |
754 | * and '<num> RECENT' but as a probably-unintended side | |
755 | * effect it ignores other unrecognized two-word | |
756 | * responses. imap-send doesn't ever try to read | |
757 | * messages or mailboxes these days, so consider | |
758 | * eliminating this case. | |
759 | */ | |
f2561fda | 760 | } else { |
95c53908 | 761 | fprintf(stderr, "IMAP error: unable to parse untagged response\n"); |
f2561fda MM |
762 | return RESP_BAD; |
763 | } | |
764 | } else if (!imap->in_progress) { | |
95c53908 | 765 | fprintf(stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : ""); |
f2561fda MM |
766 | return RESP_BAD; |
767 | } else if (*arg == '+') { | |
768 | /* This can happen only with the last command underway, as | |
769 | it enforces a round-trip. */ | |
770 | cmdp = (struct imap_cmd *)((char *)imap->in_progress_append - | |
771 | offsetof(struct imap_cmd, next)); | |
772 | if (cmdp->cb.data) { | |
95c53908 RS |
773 | n = socket_write(&imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen); |
774 | free(cmdp->cb.data); | |
5142db69 | 775 | cmdp->cb.data = NULL; |
f2561fda MM |
776 | if (n != (int)cmdp->cb.dlen) |
777 | return RESP_BAD; | |
778 | } else if (cmdp->cb.cont) { | |
95c53908 | 779 | if (cmdp->cb.cont(ctx, cmdp, cmd)) |
f2561fda MM |
780 | return RESP_BAD; |
781 | } else { | |
95c53908 | 782 | fprintf(stderr, "IMAP error: unexpected command continuation request\n"); |
f2561fda MM |
783 | return RESP_BAD; |
784 | } | |
95c53908 | 785 | if (socket_write(&imap->buf.sock, "\r\n", 2) != 2) |
f2561fda MM |
786 | return RESP_BAD; |
787 | if (!cmdp->cb.cont) | |
788 | imap->literal_pending = 0; | |
789 | if (!tcmd) | |
790 | return DRV_OK; | |
791 | } else { | |
95c53908 | 792 | tag = atoi(arg); |
f2561fda MM |
793 | for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next) |
794 | if (cmdp->tag == tag) | |
795 | goto gottag; | |
95c53908 | 796 | fprintf(stderr, "IMAP error: unexpected tag %s\n", arg); |
f2561fda | 797 | return RESP_BAD; |
9f1ad541 | 798 | gottag: |
f2561fda MM |
799 | if (!(*pcmdp = cmdp->next)) |
800 | imap->in_progress_append = pcmdp; | |
801 | imap->num_in_progress--; | |
802 | if (cmdp->cb.cont || cmdp->cb.data) | |
803 | imap->literal_pending = 0; | |
95c53908 RS |
804 | arg = next_arg(&cmd); |
805 | if (!strcmp("OK", arg)) | |
f2561fda MM |
806 | resp = DRV_OK; |
807 | else { | |
95c53908 RS |
808 | if (!strcmp("NO", arg)) { |
809 | if (cmdp->cb.create && cmd && (cmdp->cb.trycreate || !memcmp(cmd, "[TRYCREATE]", 11))) { /* SELECT, APPEND or UID COPY */ | |
810 | p = strchr(cmdp->cmd, '"'); | |
28bea9e5 | 811 | if (!issue_imap_cmd(ctx, NULL, "CREATE \"%.*s\"", (int)(strchr(p + 1, '"') - p + 1), p)) { |
f2561fda MM |
812 | resp = RESP_BAD; |
813 | goto normal; | |
814 | } | |
815 | /* not waiting here violates the spec, but a server that does not | |
816 | grok this nonetheless violates it too. */ | |
817 | cmdp->cb.create = 0; | |
95c53908 | 818 | if (!(ncmdp = issue_imap_cmd(ctx, &cmdp->cb, "%s", cmdp->cmd))) { |
f2561fda MM |
819 | resp = RESP_BAD; |
820 | goto normal; | |
821 | } | |
95c53908 RS |
822 | free(cmdp->cmd); |
823 | free(cmdp); | |
f2561fda MM |
824 | if (!tcmd) |
825 | return 0; /* ignored */ | |
826 | if (cmdp == tcmd) | |
827 | tcmd = ncmdp; | |
828 | continue; | |
829 | } | |
830 | resp = RESP_NO; | |
95c53908 | 831 | } else /*if (!strcmp("BAD", arg))*/ |
f2561fda | 832 | resp = RESP_BAD; |
95c53908 RS |
833 | fprintf(stderr, "IMAP command '%s' returned response (%s) - %s\n", |
834 | memcmp(cmdp->cmd, "LOGIN", 5) ? | |
f2561fda MM |
835 | cmdp->cmd : "LOGIN <user> <pass>", |
836 | arg, cmd ? cmd : ""); | |
837 | } | |
95c53908 | 838 | if ((resp2 = parse_response_code(ctx, &cmdp->cb, cmd)) > resp) |
f2561fda | 839 | resp = resp2; |
9f1ad541 | 840 | normal: |
f2561fda | 841 | if (cmdp->cb.done) |
95c53908 RS |
842 | cmdp->cb.done(ctx, cmdp, resp); |
843 | free(cmdp->cb.data); | |
844 | free(cmdp->cmd); | |
845 | free(cmdp); | |
f2561fda MM |
846 | if (!tcmd || tcmd == cmdp) |
847 | return resp; | |
848 | } | |
849 | } | |
850 | /* not reached */ | |
851 | } | |
852 | ||
9f1ad541 | 853 | static void imap_close_server(struct imap_store *ictx) |
f2561fda | 854 | { |
9f1ad541 | 855 | struct imap *imap = ictx->imap; |
f2561fda | 856 | |
7a7796e9 | 857 | if (imap->buf.sock.fd[0] != -1) { |
95c53908 RS |
858 | imap_exec(ictx, NULL, "LOGOUT"); |
859 | socket_shutdown(&imap->buf.sock); | |
f2561fda | 860 | } |
95c53908 | 861 | free(imap); |
f2561fda MM |
862 | } |
863 | ||
fe47e1df | 864 | static void imap_close_store(struct imap_store *ctx) |
f2561fda | 865 | { |
fe47e1df | 866 | imap_close_server(ctx); |
95c53908 | 867 | free(ctx); |
f2561fda MM |
868 | } |
869 | ||
ae9c606e HM |
870 | #ifndef NO_OPENSSL |
871 | ||
872 | /* | |
873 | * hexchar() and cram() functions are based on the code from the isync | |
874 | * project (http://isync.sf.net/). | |
875 | */ | |
876 | static char hexchar(unsigned int b) | |
f2561fda | 877 | { |
ae9c606e | 878 | return b < 10 ? '0' + b : 'a' + (b - 10); |
f2561fda MM |
879 | } |
880 | ||
ae9c606e HM |
881 | #define ENCODED_SIZE(n) (4*((n+2)/3)) |
882 | static char *cram(const char *challenge_64, const char *user, const char *pass) | |
f2561fda | 883 | { |
ae9c606e HM |
884 | int i, resp_len, encoded_len, decoded_len; |
885 | HMAC_CTX hmac; | |
886 | unsigned char hash[16]; | |
887 | char hex[33]; | |
888 | char *response, *response_64, *challenge; | |
889 | ||
890 | /* | |
891 | * length of challenge_64 (i.e. base-64 encoded string) is a good | |
892 | * enough upper bound for challenge (decoded result). | |
893 | */ | |
894 | encoded_len = strlen(challenge_64); | |
895 | challenge = xmalloc(encoded_len); | |
896 | decoded_len = EVP_DecodeBlock((unsigned char *)challenge, | |
897 | (unsigned char *)challenge_64, encoded_len); | |
898 | if (decoded_len < 0) | |
899 | die("invalid challenge %s", challenge_64); | |
900 | HMAC_Init(&hmac, (unsigned char *)pass, strlen(pass), EVP_md5()); | |
901 | HMAC_Update(&hmac, (unsigned char *)challenge, decoded_len); | |
902 | HMAC_Final(&hmac, hash, NULL); | |
903 | HMAC_CTX_cleanup(&hmac); | |
904 | ||
905 | hex[32] = 0; | |
906 | for (i = 0; i < 16; i++) { | |
907 | hex[2 * i] = hexchar((hash[i] >> 4) & 0xf); | |
908 | hex[2 * i + 1] = hexchar(hash[i] & 0xf); | |
909 | } | |
910 | ||
911 | /* response: "<user> <digest in hex>" */ | |
912 | resp_len = strlen(user) + 1 + strlen(hex) + 1; | |
913 | response = xmalloc(resp_len); | |
914 | sprintf(response, "%s %s", user, hex); | |
915 | ||
916 | response_64 = xmalloc(ENCODED_SIZE(resp_len) + 1); | |
917 | encoded_len = EVP_EncodeBlock((unsigned char *)response_64, | |
918 | (unsigned char *)response, resp_len); | |
919 | if (encoded_len < 0) | |
920 | die("EVP_EncodeBlock error"); | |
921 | response_64[encoded_len] = '\0'; | |
922 | return (char *)response_64; | |
923 | } | |
924 | ||
925 | #else | |
926 | ||
927 | static char *cram(const char *challenge_64, const char *user, const char *pass) | |
928 | { | |
929 | die("If you want to use CRAM-MD5 authenticate method, " | |
930 | "you have to build git-imap-send with OpenSSL library."); | |
931 | } | |
932 | ||
933 | #endif | |
934 | ||
935 | static int auth_cram_md5(struct imap_store *ctx, struct imap_cmd *cmd, const char *prompt) | |
936 | { | |
937 | int ret; | |
938 | char *response; | |
939 | ||
940 | response = cram(prompt, server.user, server.pass); | |
941 | ||
942 | ret = socket_write(&ctx->imap->buf.sock, response, strlen(response)); | |
943 | if (ret != strlen(response)) | |
82247e9b | 944 | return error("IMAP error: sending response failed"); |
ae9c606e HM |
945 | |
946 | free(response); | |
947 | ||
948 | return 0; | |
949 | } | |
950 | ||
fe47e1df | 951 | static struct imap_store *imap_open_store(struct imap_server_conf *srvc) |
f2561fda | 952 | { |
9f1ad541 JH |
953 | struct imap_store *ctx; |
954 | struct imap *imap; | |
f2561fda | 955 | char *arg, *rsp; |
c94d2dd0 | 956 | int s = -1, preauth; |
f2561fda | 957 | |
95c53908 | 958 | ctx = xcalloc(sizeof(*ctx), 1); |
f2561fda | 959 | |
95c53908 | 960 | ctx->imap = imap = xcalloc(sizeof(*imap), 1); |
7a7796e9 | 961 | imap->buf.sock.fd[0] = imap->buf.sock.fd[1] = -1; |
f2561fda MM |
962 | imap->in_progress_append = &imap->in_progress; |
963 | ||
964 | /* open connection to IMAP server */ | |
965 | ||
966 | if (srvc->tunnel) { | |
ac0ba18d | 967 | const char *argv[] = { srvc->tunnel, NULL }; |
c2e86add | 968 | struct child_process tunnel = {NULL}; |
f2561fda | 969 | |
c94d2dd0 | 970 | imap_info("Starting tunnel '%s'... ", srvc->tunnel); |
f2561fda | 971 | |
c94d2dd0 | 972 | tunnel.argv = argv; |
ac0ba18d | 973 | tunnel.use_shell = 1; |
c94d2dd0 EFL |
974 | tunnel.in = -1; |
975 | tunnel.out = -1; | |
976 | if (start_command(&tunnel)) | |
977 | die("cannot start proxy %s", argv[0]); | |
f2561fda | 978 | |
c94d2dd0 EFL |
979 | imap->buf.sock.fd[0] = tunnel.out; |
980 | imap->buf.sock.fd[1] = tunnel.in; | |
f2561fda | 981 | |
95c53908 | 982 | imap_info("ok\n"); |
f2561fda | 983 | } else { |
94ad2437 BK |
984 | #ifndef NO_IPV6 |
985 | struct addrinfo hints, *ai0, *ai; | |
986 | int gai; | |
987 | char portstr[6]; | |
988 | ||
1702b138 | 989 | snprintf(portstr, sizeof(portstr), "%d", srvc->port); |
94ad2437 BK |
990 | |
991 | memset(&hints, 0, sizeof(hints)); | |
992 | hints.ai_socktype = SOCK_STREAM; | |
993 | hints.ai_protocol = IPPROTO_TCP; | |
f2561fda | 994 | |
94ad2437 BK |
995 | imap_info("Resolving %s... ", srvc->host); |
996 | gai = getaddrinfo(srvc->host, portstr, &hints, &ai); | |
997 | if (gai) { | |
998 | fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(gai)); | |
999 | goto bail; | |
f2561fda | 1000 | } |
94ad2437 | 1001 | imap_info("ok\n"); |
f2561fda | 1002 | |
94ad2437 BK |
1003 | for (ai0 = ai; ai; ai = ai->ai_next) { |
1004 | char addr[NI_MAXHOST]; | |
f2561fda | 1005 | |
94ad2437 BK |
1006 | s = socket(ai->ai_family, ai->ai_socktype, |
1007 | ai->ai_protocol); | |
1008 | if (s < 0) | |
1009 | continue; | |
f2561fda | 1010 | |
94ad2437 BK |
1011 | getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, |
1012 | sizeof(addr), NULL, 0, NI_NUMERICHOST); | |
1013 | imap_info("Connecting to [%s]:%s... ", addr, portstr); | |
1014 | ||
1015 | if (connect(s, ai->ai_addr, ai->ai_addrlen) < 0) { | |
1016 | close(s); | |
1017 | s = -1; | |
1018 | perror("connect"); | |
1019 | continue; | |
1020 | } | |
1021 | ||
1022 | break; | |
1023 | } | |
1024 | freeaddrinfo(ai0); | |
1025 | #else /* NO_IPV6 */ | |
1026 | struct hostent *he; | |
1027 | struct sockaddr_in addr; | |
1028 | ||
95c53908 RS |
1029 | memset(&addr, 0, sizeof(addr)); |
1030 | addr.sin_port = htons(srvc->port); | |
f2561fda MM |
1031 | addr.sin_family = AF_INET; |
1032 | ||
95c53908 RS |
1033 | imap_info("Resolving %s... ", srvc->host); |
1034 | he = gethostbyname(srvc->host); | |
f2561fda | 1035 | if (!he) { |
95c53908 | 1036 | perror("gethostbyname"); |
f2561fda MM |
1037 | goto bail; |
1038 | } | |
95c53908 | 1039 | imap_info("ok\n"); |
f2561fda MM |
1040 | |
1041 | addr.sin_addr.s_addr = *((int *) he->h_addr_list[0]); | |
1042 | ||
95c53908 | 1043 | s = socket(PF_INET, SOCK_STREAM, 0); |
f2561fda | 1044 | |
95c53908 RS |
1045 | imap_info("Connecting to %s:%hu... ", inet_ntoa(addr.sin_addr), ntohs(addr.sin_port)); |
1046 | if (connect(s, (struct sockaddr *)&addr, sizeof(addr))) { | |
1047 | close(s); | |
94ad2437 | 1048 | s = -1; |
95c53908 | 1049 | perror("connect"); |
94ad2437 BK |
1050 | } |
1051 | #endif | |
1052 | if (s < 0) { | |
1053 | fputs("Error: unable to connect to server.\n", stderr); | |
f2561fda MM |
1054 | goto bail; |
1055 | } | |
f2561fda | 1056 | |
7a7796e9 EFL |
1057 | imap->buf.sock.fd[0] = s; |
1058 | imap->buf.sock.fd[1] = dup(s); | |
f2561fda | 1059 | |
684ec6c6 RS |
1060 | if (srvc->use_ssl && |
1061 | ssl_socket_connect(&imap->buf.sock, 0, srvc->ssl_verify)) { | |
1062 | close(s); | |
1063 | goto bail; | |
1064 | } | |
95c53908 | 1065 | imap_info("ok\n"); |
f2561fda MM |
1066 | } |
1067 | ||
1068 | /* read the greeting string */ | |
95c53908 RS |
1069 | if (buffer_gets(&imap->buf, &rsp)) { |
1070 | fprintf(stderr, "IMAP error: no greeting response\n"); | |
f2561fda MM |
1071 | goto bail; |
1072 | } | |
95c53908 RS |
1073 | arg = next_arg(&rsp); |
1074 | if (!arg || *arg != '*' || (arg = next_arg(&rsp)) == NULL) { | |
1075 | fprintf(stderr, "IMAP error: invalid greeting response\n"); | |
f2561fda MM |
1076 | goto bail; |
1077 | } | |
1078 | preauth = 0; | |
95c53908 | 1079 | if (!strcmp("PREAUTH", arg)) |
f2561fda | 1080 | preauth = 1; |
95c53908 RS |
1081 | else if (strcmp("OK", arg) != 0) { |
1082 | fprintf(stderr, "IMAP error: unknown greeting response\n"); | |
f2561fda MM |
1083 | goto bail; |
1084 | } | |
95c53908 RS |
1085 | parse_response_code(ctx, NULL, rsp); |
1086 | if (!imap->caps && imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK) | |
f2561fda MM |
1087 | goto bail; |
1088 | ||
1089 | if (!preauth) { | |
684ec6c6 RS |
1090 | #ifndef NO_OPENSSL |
1091 | if (!srvc->use_ssl && CAP(STARTTLS)) { | |
d27da38a | 1092 | if (imap_exec(ctx, NULL, "STARTTLS") != RESP_OK) |
684ec6c6 RS |
1093 | goto bail; |
1094 | if (ssl_socket_connect(&imap->buf.sock, 1, | |
1095 | srvc->ssl_verify)) | |
1096 | goto bail; | |
1097 | /* capabilities may have changed, so get the new capabilities */ | |
d27da38a | 1098 | if (imap_exec(ctx, NULL, "CAPABILITY") != RESP_OK) |
684ec6c6 RS |
1099 | goto bail; |
1100 | } | |
1101 | #endif | |
95c53908 | 1102 | imap_info("Logging in...\n"); |
f2561fda | 1103 | if (!srvc->user) { |
95c53908 | 1104 | fprintf(stderr, "Skipping server %s, no user\n", srvc->host); |
f2561fda MM |
1105 | goto bail; |
1106 | } | |
1107 | if (!srvc->pass) { | |
50d0158f JK |
1108 | struct strbuf prompt = STRBUF_INIT; |
1109 | strbuf_addf(&prompt, "Password (%s@%s): ", srvc->user, srvc->host); | |
1110 | arg = git_getpass(prompt.buf); | |
1111 | strbuf_release(&prompt); | |
f2561fda | 1112 | if (!*arg) { |
95c53908 | 1113 | fprintf(stderr, "Skipping account %s@%s, no password\n", srvc->user, srvc->host); |
f2561fda MM |
1114 | goto bail; |
1115 | } | |
1116 | /* | |
1117 | * getpass() returns a pointer to a static buffer. make a copy | |
1118 | * for long term storage. | |
1119 | */ | |
95c53908 | 1120 | srvc->pass = xstrdup(arg); |
f2561fda MM |
1121 | } |
1122 | if (CAP(NOLOGIN)) { | |
95c53908 | 1123 | fprintf(stderr, "Skipping account %s@%s, server forbids LOGIN\n", srvc->user, srvc->host); |
f2561fda MM |
1124 | goto bail; |
1125 | } | |
ae9c606e HM |
1126 | |
1127 | if (srvc->auth_method) { | |
1128 | struct imap_cmd_cb cb; | |
1129 | ||
1130 | if (!strcmp(srvc->auth_method, "CRAM-MD5")) { | |
1131 | if (!CAP(AUTH_CRAM_MD5)) { | |
1132 | fprintf(stderr, "You specified" | |
1133 | "CRAM-MD5 as authentication method, " | |
1134 | "but %s doesn't support it.\n", srvc->host); | |
1135 | goto bail; | |
1136 | } | |
1137 | /* CRAM-MD5 */ | |
1138 | ||
1139 | memset(&cb, 0, sizeof(cb)); | |
1140 | cb.cont = auth_cram_md5; | |
1141 | if (imap_exec(ctx, &cb, "AUTHENTICATE CRAM-MD5") != RESP_OK) { | |
1142 | fprintf(stderr, "IMAP error: AUTHENTICATE CRAM-MD5 failed\n"); | |
1143 | goto bail; | |
1144 | } | |
1145 | } else { | |
1146 | fprintf(stderr, "Unknown authentication method:%s\n", srvc->host); | |
1147 | goto bail; | |
1148 | } | |
1149 | } else { | |
10439d89 CW |
1150 | if (!imap->buf.sock.ssl) |
1151 | imap_warn("*** IMAP Warning *** Password is being " | |
1152 | "sent in the clear\n"); | |
ae9c606e HM |
1153 | if (imap_exec(ctx, NULL, "LOGIN \"%s\" \"%s\"", srvc->user, srvc->pass) != RESP_OK) { |
1154 | fprintf(stderr, "IMAP error: LOGIN failed\n"); | |
1155 | goto bail; | |
1156 | } | |
f2561fda MM |
1157 | } |
1158 | } /* !preauth */ | |
1159 | ||
1160 | ctx->prefix = ""; | |
fe47e1df | 1161 | return ctx; |
f2561fda | 1162 | |
9f1ad541 | 1163 | bail: |
fe47e1df | 1164 | imap_close_store(ctx); |
5142db69 | 1165 | return NULL; |
f2561fda MM |
1166 | } |
1167 | ||
3691031c MH |
1168 | /* |
1169 | * Insert CR characters as necessary in *msg to ensure that every LF | |
1170 | * character in *msg is preceded by a CR. | |
1171 | */ | |
f035ab62 | 1172 | static void lf_to_crlf(struct strbuf *msg) |
f2561fda | 1173 | { |
67d17630 | 1174 | char *new; |
3691031c MH |
1175 | size_t i, j; |
1176 | char lastc; | |
1177 | ||
1178 | /* First pass: tally, in j, the size of the new string: */ | |
1179 | for (i = j = 0, lastc = '\0'; i < msg->len; i++) { | |
1180 | if (msg->buf[i] == '\n' && lastc != '\r') | |
1181 | j++; /* a CR will need to be added here */ | |
1182 | lastc = msg->buf[i]; | |
1183 | j++; | |
f2561fda | 1184 | } |
67d17630 | 1185 | |
3691031c MH |
1186 | new = xmalloc(j + 1); |
1187 | ||
1188 | /* | |
1189 | * Second pass: write the new string. Note that this loop is | |
1190 | * otherwise identical to the first pass. | |
1191 | */ | |
1192 | for (i = j = 0, lastc = '\0'; i < msg->len; i++) { | |
1193 | if (msg->buf[i] == '\n' && lastc != '\r') | |
67d17630 | 1194 | new[j++] = '\r'; |
3691031c | 1195 | lastc = new[j++] = msg->buf[i]; |
f2561fda | 1196 | } |
3691031c | 1197 | strbuf_attach(msg, new, j, j + 1); |
67d17630 | 1198 | } |
f2561fda | 1199 | |
f035ab62 MH |
1200 | /* |
1201 | * Store msg to IMAP. Also detach and free the data from msg->data, | |
1202 | * leaving msg->data empty. | |
1203 | */ | |
fe47e1df | 1204 | static int imap_store_msg(struct imap_store *ctx, struct strbuf *msg) |
f2561fda | 1205 | { |
9f1ad541 | 1206 | struct imap *imap = ctx->imap; |
f2561fda | 1207 | struct imap_cmd_cb cb; |
f2561fda | 1208 | const char *prefix, *box; |
719125c5 | 1209 | int ret; |
f2561fda | 1210 | |
cbc60761 | 1211 | lf_to_crlf(msg); |
95c53908 | 1212 | memset(&cb, 0, sizeof(cb)); |
f2561fda | 1213 | |
cbc60761 MH |
1214 | cb.dlen = msg->len; |
1215 | cb.data = strbuf_detach(msg, NULL); | |
f2561fda | 1216 | |
636fd66b | 1217 | box = ctx->name; |
3a7cba95 JK |
1218 | prefix = !strcmp(box, "INBOX") ? "" : ctx->prefix; |
1219 | cb.create = 0; | |
719125c5 | 1220 | ret = imap_exec_m(ctx, &cb, "APPEND \"%s%s\" ", prefix, box); |
f2561fda MM |
1221 | imap->caps = imap->rcaps; |
1222 | if (ret != DRV_OK) | |
1223 | return ret; | |
f2561fda MM |
1224 | |
1225 | return DRV_OK; | |
1226 | } | |
1227 | ||
f035ab62 | 1228 | static void wrap_in_html(struct strbuf *msg) |
c64d84f1 JW |
1229 | { |
1230 | struct strbuf buf = STRBUF_INIT; | |
c64d84f1 JW |
1231 | static char *content_type = "Content-Type: text/html;\n"; |
1232 | static char *pre_open = "<pre>\n"; | |
1233 | static char *pre_close = "</pre>\n"; | |
118a68f9 MH |
1234 | const char *body = strstr(msg->buf, "\n\n"); |
1235 | ||
1236 | if (!body) | |
1237 | return; /* Headers but no body; no wrapping needed */ | |
1238 | ||
1239 | body += 2; | |
1240 | ||
1241 | strbuf_add(&buf, msg->buf, body - msg->buf - 1); | |
1242 | strbuf_addstr(&buf, content_type); | |
1243 | strbuf_addch(&buf, '\n'); | |
1244 | strbuf_addstr(&buf, pre_open); | |
1245 | strbuf_addstr_xml_quoted(&buf, body); | |
c64d84f1 | 1246 | strbuf_addstr(&buf, pre_close); |
118a68f9 | 1247 | |
f035ab62 MH |
1248 | strbuf_release(msg); |
1249 | *msg = buf; | |
c64d84f1 JW |
1250 | } |
1251 | ||
f2561fda MM |
1252 | #define CHUNKSIZE 0x1000 |
1253 | ||
3a34e626 | 1254 | static int read_message(FILE *f, struct strbuf *all_msgs) |
f2561fda | 1255 | { |
635d043f | 1256 | do { |
3a34e626 | 1257 | if (strbuf_fread(all_msgs, CHUNKSIZE, f) <= 0) |
f2561fda | 1258 | break; |
635d043f PH |
1259 | } while (!feof(f)); |
1260 | ||
6360bee4 | 1261 | return ferror(f) ? -1 : 0; |
f2561fda MM |
1262 | } |
1263 | ||
3a34e626 | 1264 | static int count_messages(struct strbuf *all_msgs) |
f2561fda MM |
1265 | { |
1266 | int count = 0; | |
3a34e626 | 1267 | char *p = all_msgs->buf; |
f2561fda MM |
1268 | |
1269 | while (1) { | |
1968d77d | 1270 | if (!prefixcmp(p, "From ")) { |
4916c8f9 RR |
1271 | p = strstr(p+5, "\nFrom: "); |
1272 | if (!p) break; | |
1273 | p = strstr(p+7, "\nDate: "); | |
1274 | if (!p) break; | |
1275 | p = strstr(p+7, "\nSubject: "); | |
1276 | if (!p) break; | |
1277 | p += 10; | |
f2561fda | 1278 | count++; |
f2561fda | 1279 | } |
95c53908 | 1280 | p = strstr(p+5, "\nFrom "); |
f2561fda MM |
1281 | if (!p) |
1282 | break; | |
1283 | p++; | |
1284 | } | |
1285 | return count; | |
1286 | } | |
1287 | ||
f035ab62 MH |
1288 | /* |
1289 | * Copy the next message from all_msgs, starting at offset *ofs, to | |
1290 | * msg. Update *ofs to the start of the following message. Return | |
1291 | * true iff a message was successfully copied. | |
1292 | */ | |
1293 | static int split_msg(struct strbuf *all_msgs, struct strbuf *msg, int *ofs) | |
f2561fda MM |
1294 | { |
1295 | char *p, *data; | |
f035ab62 | 1296 | size_t len; |
f2561fda | 1297 | |
f2561fda MM |
1298 | if (*ofs >= all_msgs->len) |
1299 | return 0; | |
1300 | ||
3a34e626 | 1301 | data = &all_msgs->buf[*ofs]; |
f035ab62 | 1302 | len = all_msgs->len - *ofs; |
f2561fda | 1303 | |
f035ab62 | 1304 | if (len < 5 || prefixcmp(data, "From ")) |
f2561fda MM |
1305 | return 0; |
1306 | ||
95c53908 | 1307 | p = strchr(data, '\n'); |
e0b08307 | 1308 | if (p) { |
f035ab62 MH |
1309 | p++; |
1310 | len -= p - data; | |
1311 | *ofs += p - data; | |
e0b08307 MA |
1312 | data = p; |
1313 | } | |
1314 | ||
95c53908 | 1315 | p = strstr(data, "\nFrom "); |
f2561fda | 1316 | if (p) |
f035ab62 | 1317 | len = &p[1] - data; |
f2561fda | 1318 | |
f035ab62 MH |
1319 | strbuf_add(msg, data, len); |
1320 | *ofs += len; | |
a6080a0a | 1321 | return 1; |
f2561fda MM |
1322 | } |
1323 | ||
f2561fda MM |
1324 | static char *imap_folder; |
1325 | ||
95c53908 | 1326 | static int git_imap_config(const char *key, const char *val, void *cb) |
f2561fda MM |
1327 | { |
1328 | char imap_key[] = "imap."; | |
1329 | ||
95c53908 | 1330 | if (strncmp(key, imap_key, sizeof imap_key - 1)) |
f2561fda | 1331 | return 0; |
3c17c34a | 1332 | |
f2561fda MM |
1333 | key += sizeof imap_key - 1; |
1334 | ||
ace706e2 JH |
1335 | /* check booleans first, and barf on others */ |
1336 | if (!strcmp("sslverify", key)) | |
1337 | server.ssl_verify = git_config_bool(key, val); | |
1338 | else if (!strcmp("preformattedhtml", key)) | |
1339 | server.use_html = git_config_bool(key, val); | |
1340 | else if (!val) | |
1341 | return config_error_nonbool(key); | |
1342 | ||
95c53908 RS |
1343 | if (!strcmp("folder", key)) { |
1344 | imap_folder = xstrdup(val); | |
1345 | } else if (!strcmp("host", key)) { | |
684ec6c6 RS |
1346 | if (!prefixcmp(val, "imap:")) |
1347 | val += 5; | |
1348 | else if (!prefixcmp(val, "imaps:")) { | |
1349 | val += 6; | |
1350 | server.use_ssl = 1; | |
f2561fda | 1351 | } |
1968d77d | 1352 | if (!prefixcmp(val, "//")) |
f2561fda | 1353 | val += 2; |
95c53908 | 1354 | server.host = xstrdup(val); |
9f1ad541 | 1355 | } else if (!strcmp("user", key)) |
95c53908 RS |
1356 | server.user = xstrdup(val); |
1357 | else if (!strcmp("pass", key)) | |
1358 | server.pass = xstrdup(val); | |
1359 | else if (!strcmp("port", key)) | |
1360 | server.port = git_config_int(key, val); | |
1361 | else if (!strcmp("tunnel", key)) | |
1362 | server.tunnel = xstrdup(val); | |
ae9c606e HM |
1363 | else if (!strcmp("authmethod", key)) |
1364 | server.auth_method = xstrdup(val); | |
1365 | ||
f2561fda MM |
1366 | return 0; |
1367 | } | |
1368 | ||
95c53908 | 1369 | int main(int argc, char **argv) |
f2561fda | 1370 | { |
3a34e626 | 1371 | struct strbuf all_msgs = STRBUF_INIT; |
cbc60761 | 1372 | struct strbuf msg = STRBUF_INIT; |
fe47e1df | 1373 | struct imap_store *ctx = NULL; |
f2561fda MM |
1374 | int ofs = 0; |
1375 | int r; | |
1376 | int total, n = 0; | |
a0406b94 | 1377 | int nongit_ok; |
f2561fda | 1378 | |
2fb3f6db | 1379 | git_extract_argv0_path(argv[0]); |
f2561fda | 1380 | |
5e9637c6 ÆAB |
1381 | git_setup_gettext(); |
1382 | ||
9a2861e3 JN |
1383 | if (argc != 1) |
1384 | usage(imap_send_usage); | |
f2561fda | 1385 | |
a0406b94 | 1386 | setup_git_directory_gently(&nongit_ok); |
ef90d6d4 | 1387 | git_config(git_imap_config, NULL); |
f2561fda | 1388 | |
684ec6c6 RS |
1389 | if (!server.port) |
1390 | server.port = server.use_ssl ? 993 : 143; | |
f2561fda MM |
1391 | |
1392 | if (!imap_folder) { | |
95c53908 | 1393 | fprintf(stderr, "no imap store specified\n"); |
f2561fda MM |
1394 | return 1; |
1395 | } | |
5b67b8e2 | 1396 | if (!server.host) { |
34b5cd1f | 1397 | if (!server.tunnel) { |
95c53908 | 1398 | fprintf(stderr, "no imap host specified\n"); |
34b5cd1f JK |
1399 | return 1; |
1400 | } | |
1401 | server.host = "tunnel"; | |
5b67b8e2 | 1402 | } |
f2561fda MM |
1403 | |
1404 | /* read the messages */ | |
6360bee4 MH |
1405 | if (read_message(stdin, &all_msgs)) { |
1406 | fprintf(stderr, "error reading input\n"); | |
1407 | return 1; | |
1408 | } | |
1409 | ||
1410 | if (all_msgs.len == 0) { | |
9f1ad541 | 1411 | fprintf(stderr, "nothing to send\n"); |
f2561fda MM |
1412 | return 1; |
1413 | } | |
1414 | ||
95c53908 | 1415 | total = count_messages(&all_msgs); |
1cd88cc9 | 1416 | if (!total) { |
9f1ad541 | 1417 | fprintf(stderr, "no messages to send\n"); |
f2561fda MM |
1418 | return 1; |
1419 | } | |
1420 | ||
1421 | /* write it to the imap server */ | |
95c53908 | 1422 | ctx = imap_open_store(&server); |
f2561fda | 1423 | if (!ctx) { |
9f1ad541 | 1424 | fprintf(stderr, "failed to open store\n"); |
f2561fda MM |
1425 | return 1; |
1426 | } | |
1427 | ||
9f1ad541 | 1428 | fprintf(stderr, "sending %d message%s\n", total, (total != 1) ? "s" : ""); |
636fd66b | 1429 | ctx->name = imap_folder; |
f2561fda MM |
1430 | while (1) { |
1431 | unsigned percent = n * 100 / total; | |
f035ab62 | 1432 | |
95c53908 | 1433 | fprintf(stderr, "%4u%% (%d/%d) done\r", percent, n, total); |
cbc60761 | 1434 | if (!split_msg(&all_msgs, &msg, &ofs)) |
f2561fda | 1435 | break; |
c64d84f1 | 1436 | if (server.use_html) |
cbc60761 | 1437 | wrap_in_html(&msg); |
3a7cba95 | 1438 | r = imap_store_msg(ctx, &msg); |
9f1ad541 | 1439 | if (r != DRV_OK) |
f2561fda | 1440 | break; |
f2561fda MM |
1441 | n++; |
1442 | } | |
95c53908 | 1443 | fprintf(stderr, "\n"); |
f2561fda | 1444 | |
95c53908 | 1445 | imap_close_store(ctx); |
f2561fda MM |
1446 | |
1447 | return 0; | |
1448 | } |