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Commit | Line | Data |
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2744b234 LT |
1 | /* |
2 | * Another stupid program, this one parsing the headers of an | |
3 | * email to figure out authorship and subject | |
4 | */ | |
d4a9ce78 | 5 | #define _GNU_SOURCE |
2744b234 LT |
6 | #include <stdio.h> |
7 | #include <stdlib.h> | |
8 | #include <string.h> | |
9 | #include <ctype.h> | |
d4a9ce78 | 10 | #include <iconv.h> |
2744b234 | 11 | |
a196d8d4 | 12 | static FILE *cmitmsg, *patchfile; |
2744b234 | 13 | |
6bff6a60 | 14 | static int keep_subject = 0; |
d4a9ce78 | 15 | static int metainfo_utf8 = 0; |
2744b234 | 16 | static char line[1000]; |
62c1f6b4 | 17 | static char date[1000]; |
2744b234 LT |
18 | static char name[1000]; |
19 | static char email[1000]; | |
20 | static char subject[1000]; | |
21 | ||
d4a9ce78 JH |
22 | static enum { |
23 | TE_DONTCARE, TE_QP, TE_BASE64, | |
24 | } transfer_encoding; | |
25 | static char charset[256]; | |
26 | ||
27 | static char multipart_boundary[1000]; | |
28 | static int multipart_boundary_len; | |
29 | static int patch_lines = 0; | |
30 | ||
2744b234 LT |
31 | static char *sanity_check(char *name, char *email) |
32 | { | |
33 | int len = strlen(name); | |
34 | if (len < 3 || len > 60) | |
35 | return email; | |
36 | if (strchr(name, '@') || strchr(name, '<') || strchr(name, '>')) | |
37 | return email; | |
38 | return name; | |
39 | } | |
40 | ||
41 | static int handle_from(char *line) | |
42 | { | |
43 | char *at = strchr(line, '@'); | |
44 | char *dst; | |
45 | ||
46 | if (!at) | |
47 | return 0; | |
48 | ||
49 | /* | |
50 | * If we already have one email, don't take any confusing lines | |
51 | */ | |
52 | if (*email && strchr(at+1, '@')) | |
53 | return 0; | |
54 | ||
d4a9ce78 JH |
55 | /* Pick up the string around '@', possibly delimited with <> |
56 | * pair; that is the email part. White them out while copying. | |
57 | */ | |
2744b234 LT |
58 | while (at > line) { |
59 | char c = at[-1]; | |
d4a9ce78 JH |
60 | if (isspace(c)) |
61 | break; | |
62 | if (c == '<') { | |
63 | at[-1] = ' '; | |
2744b234 | 64 | break; |
d4a9ce78 | 65 | } |
2744b234 LT |
66 | at--; |
67 | } | |
68 | dst = email; | |
69 | for (;;) { | |
70 | unsigned char c = *at; | |
d4a9ce78 JH |
71 | if (!c || c == '>' || isspace(c)) { |
72 | if (c == '>') | |
73 | *at = ' '; | |
2744b234 | 74 | break; |
d4a9ce78 | 75 | } |
2744b234 LT |
76 | *at++ = ' '; |
77 | *dst++ = c; | |
78 | } | |
79 | *dst++ = 0; | |
80 | ||
d4a9ce78 JH |
81 | /* The remainder is name. It could be "John Doe <john.doe@xz>" |
82 | * or "john.doe@xz (John Doe)", but we have whited out the | |
83 | * email part, so trim from both ends, possibly removing | |
84 | * the () pair at the end. | |
85 | */ | |
2744b234 LT |
86 | at = line + strlen(line); |
87 | while (at > line) { | |
88 | unsigned char c = *--at; | |
d4a9ce78 JH |
89 | if (!isspace(c)) { |
90 | at[(c == ')') ? 0 : 1] = 0; | |
2744b234 | 91 | break; |
d4a9ce78 | 92 | } |
2744b234 LT |
93 | } |
94 | ||
95 | at = line; | |
96 | for (;;) { | |
97 | unsigned char c = *at; | |
d4a9ce78 JH |
98 | if (!c || !isspace(c)) { |
99 | if (c == '(') | |
100 | at++; | |
2744b234 | 101 | break; |
d4a9ce78 | 102 | } |
2744b234 LT |
103 | at++; |
104 | } | |
2744b234 | 105 | at = sanity_check(at, email); |
2744b234 LT |
106 | strcpy(name, at); |
107 | return 1; | |
108 | } | |
109 | ||
d4a9ce78 | 110 | static int handle_date(char *line) |
62c1f6b4 LT |
111 | { |
112 | strcpy(date, line); | |
d4a9ce78 | 113 | return 0; |
62c1f6b4 LT |
114 | } |
115 | ||
d4a9ce78 | 116 | static int handle_subject(char *line) |
2744b234 LT |
117 | { |
118 | strcpy(subject, line); | |
d4a9ce78 JH |
119 | return 0; |
120 | } | |
121 | ||
122 | /* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt | |
123 | * to have enough heuristics to grok MIME encoded patches often found | |
124 | * on our mailing lists. For example, we do not even treat header lines | |
125 | * case insensitively. | |
126 | */ | |
127 | ||
128 | static int slurp_attr(const char *line, const char *name, char *attr) | |
129 | { | |
130 | char *ends, *ap = strcasestr(line, name); | |
131 | size_t sz; | |
132 | ||
133 | if (!ap) { | |
134 | *attr = 0; | |
135 | return 0; | |
136 | } | |
137 | ap += strlen(name); | |
138 | if (*ap == '"') { | |
139 | ap++; | |
140 | ends = "\""; | |
141 | } | |
142 | else | |
143 | ends = "; \t"; | |
144 | sz = strcspn(ap, ends); | |
145 | memcpy(attr, ap, sz); | |
146 | attr[sz] = 0; | |
147 | return 1; | |
148 | } | |
149 | ||
150 | static int handle_subcontent_type(char *line) | |
151 | { | |
152 | /* We do not want to mess with boundary. Note that we do not | |
153 | * handle nested multipart. | |
154 | */ | |
b893f091 JH |
155 | if (strcasestr(line, "boundary=")) { |
156 | fprintf(stderr, "Not handling nested multipart message.\n"); | |
157 | exit(1); | |
158 | } | |
d4a9ce78 JH |
159 | slurp_attr(line, "charset=", charset); |
160 | if (*charset) { | |
161 | int i, c; | |
162 | for (i = 0; (c = charset[i]) != 0; i++) | |
163 | charset[i] = tolower(c); | |
164 | } | |
165 | return 0; | |
166 | } | |
167 | ||
168 | static int handle_content_type(char *line) | |
169 | { | |
170 | *multipart_boundary = 0; | |
171 | if (slurp_attr(line, "boundary=", multipart_boundary + 2)) { | |
172 | memcpy(multipart_boundary, "--", 2); | |
173 | multipart_boundary_len = strlen(multipart_boundary); | |
174 | } | |
175 | slurp_attr(line, "charset=", charset); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static int handle_content_transfer_encoding(char *line) | |
180 | { | |
181 | if (strcasestr(line, "base64")) | |
182 | transfer_encoding = TE_BASE64; | |
183 | else if (strcasestr(line, "quoted-printable")) | |
184 | transfer_encoding = TE_QP; | |
185 | else | |
186 | transfer_encoding = TE_DONTCARE; | |
187 | return 0; | |
2744b234 LT |
188 | } |
189 | ||
d4a9ce78 JH |
190 | static int is_multipart_boundary(const char *line) |
191 | { | |
192 | return (!memcmp(line, multipart_boundary, multipart_boundary_len)); | |
193 | } | |
194 | ||
195 | static int eatspace(char *line) | |
2744b234 | 196 | { |
d4a9ce78 JH |
197 | int len = strlen(line); |
198 | while (len > 0 && isspace(line[len-1])) | |
199 | line[--len] = 0; | |
200 | return len; | |
2744b234 LT |
201 | } |
202 | ||
d4a9ce78 JH |
203 | #define SEEN_FROM 01 |
204 | #define SEEN_DATE 02 | |
205 | #define SEEN_SUBJECT 04 | |
206 | ||
207 | /* First lines of body can have From:, Date:, and Subject: */ | |
208 | static int handle_inbody_header(int *seen, char *line) | |
209 | { | |
210 | if (!memcmp("From:", line, 5) && isspace(line[5])) { | |
211 | if (!(*seen & SEEN_FROM) && handle_from(line+6)) { | |
212 | *seen |= SEEN_FROM; | |
213 | return 1; | |
214 | } | |
215 | } | |
216 | if (!memcmp("Date:", line, 5) && isspace(line[5])) { | |
217 | if (!(*seen & SEEN_DATE)) { | |
218 | handle_date(line+6); | |
219 | *seen |= SEEN_DATE; | |
220 | return 1; | |
221 | } | |
222 | } | |
223 | if (!memcmp("Subject:", line, 8) && isspace(line[8])) { | |
224 | if (!(*seen & SEEN_SUBJECT)) { | |
225 | handle_subject(line+9); | |
226 | *seen |= SEEN_SUBJECT; | |
227 | return 1; | |
228 | } | |
229 | } | |
230 | if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) { | |
231 | if (!(*seen & SEEN_SUBJECT)) { | |
232 | handle_subject(line); | |
233 | *seen |= SEEN_SUBJECT; | |
234 | return 1; | |
235 | } | |
236 | } | |
237 | return 0; | |
238 | } | |
239 | ||
240 | static char *cleanup_subject(char *subject) | |
2744b234 | 241 | { |
6bff6a60 JH |
242 | if (keep_subject) |
243 | return subject; | |
2744b234 LT |
244 | for (;;) { |
245 | char *p; | |
246 | int len, remove; | |
247 | switch (*subject) { | |
248 | case 'r': case 'R': | |
249 | if (!memcmp("e:", subject+1, 2)) { | |
250 | subject +=3; | |
251 | continue; | |
252 | } | |
253 | break; | |
254 | case ' ': case '\t': case ':': | |
255 | subject++; | |
256 | continue; | |
257 | ||
258 | case '[': | |
259 | p = strchr(subject, ']'); | |
260 | if (!p) { | |
261 | subject++; | |
262 | continue; | |
263 | } | |
264 | len = strlen(p); | |
265 | remove = p - subject; | |
266 | if (remove <= len *2) { | |
267 | subject = p+1; | |
268 | continue; | |
269 | } | |
270 | break; | |
271 | } | |
272 | return subject; | |
273 | } | |
274 | } | |
275 | ||
276 | static void cleanup_space(char *buf) | |
277 | { | |
278 | unsigned char c; | |
279 | while ((c = *buf) != 0) { | |
280 | buf++; | |
281 | if (isspace(c)) { | |
282 | buf[-1] = ' '; | |
283 | c = *buf; | |
284 | while (isspace(c)) { | |
285 | int len = strlen(buf); | |
286 | memmove(buf, buf+1, len); | |
287 | c = *buf; | |
288 | } | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
d4a9ce78 JH |
293 | typedef int (*header_fn_t)(char *); |
294 | struct header_def { | |
295 | const char *name; | |
296 | header_fn_t func; | |
297 | int namelen; | |
298 | }; | |
299 | ||
300 | static void check_header(char *line, int len, struct header_def *header) | |
301 | { | |
302 | int i; | |
303 | ||
304 | if (header[0].namelen <= 0) { | |
305 | for (i = 0; header[i].name; i++) | |
306 | header[i].namelen = strlen(header[i].name); | |
307 | } | |
308 | for (i = 0; header[i].name; i++) { | |
309 | int len = header[i].namelen; | |
310 | if (!strncasecmp(line, header[i].name, len) && | |
311 | line[len] == ':' && isspace(line[len + 1])) { | |
312 | header[i].func(line + len + 2); | |
313 | break; | |
314 | } | |
315 | } | |
316 | } | |
317 | ||
318 | static void check_subheader_line(char *line, int len) | |
319 | { | |
320 | static struct header_def header[] = { | |
321 | { "Content-Type", handle_subcontent_type }, | |
322 | { "Content-Transfer-Encoding", | |
323 | handle_content_transfer_encoding }, | |
324 | { NULL }, | |
325 | }; | |
326 | check_header(line, len, header); | |
327 | } | |
328 | static void check_header_line(char *line, int len) | |
329 | { | |
330 | static struct header_def header[] = { | |
331 | { "From", handle_from }, | |
332 | { "Date", handle_date }, | |
333 | { "Subject", handle_subject }, | |
334 | { "Content-Type", handle_content_type }, | |
335 | { "Content-Transfer-Encoding", | |
336 | handle_content_transfer_encoding }, | |
337 | { NULL }, | |
338 | }; | |
339 | check_header(line, len, header); | |
340 | } | |
341 | ||
342 | static int read_one_header_line(char *line, int sz, FILE *in) | |
343 | { | |
344 | int ofs = 0; | |
345 | while (ofs < sz) { | |
346 | int peek, len; | |
347 | if (fgets(line + ofs, sz - ofs, in) == NULL) | |
348 | return ofs; | |
349 | len = eatspace(line + ofs); | |
350 | if (len == 0) | |
351 | return ofs; | |
352 | peek = fgetc(in); ungetc(peek, in); | |
353 | if (peek == ' ' || peek == '\t') { | |
354 | /* Yuck, 2822 header "folding" */ | |
355 | ofs += len; | |
356 | continue; | |
357 | } | |
358 | return ofs + len; | |
359 | } | |
360 | return ofs; | |
361 | } | |
362 | ||
363 | static unsigned hexval(int c) | |
364 | { | |
365 | if (c >= '0' && c <= '9') | |
366 | return c - '0'; | |
367 | if (c >= 'a' && c <= 'f') | |
368 | return c - 'a' + 10; | |
369 | if (c >= 'A' && c <= 'F') | |
370 | return c - 'A' + 10; | |
371 | return ~0; | |
372 | } | |
373 | ||
374 | static int decode_q_segment(char *in, char *ot, char *ep) | |
375 | { | |
376 | int c; | |
377 | while ((c = *in++) != 0 && (in <= ep)) { | |
378 | if (c == '=') { | |
379 | int d = *in++; | |
380 | if (d == '\n' || !d) | |
381 | break; /* drop trailing newline */ | |
382 | *ot++ = ((hexval(d) << 4) | hexval(*in++)); | |
383 | } | |
384 | else | |
385 | *ot++ = c; | |
386 | } | |
387 | *ot = 0; | |
388 | return 0; | |
389 | } | |
390 | ||
391 | static int decode_b_segment(char *in, char *ot, char *ep) | |
392 | { | |
393 | /* Decode in..ep, possibly in-place to ot */ | |
394 | int c, pos = 0, acc = 0; | |
395 | ||
396 | while ((c = *in++) != 0 && (in <= ep)) { | |
397 | if (c == '+') | |
398 | c = 62; | |
399 | else if (c == '/') | |
400 | c = 63; | |
401 | else if ('A' <= c && c <= 'Z') | |
402 | c -= 'A'; | |
403 | else if ('a' <= c && c <= 'z') | |
404 | c -= 'a' - 26; | |
405 | else if ('0' <= c && c <= '9') | |
406 | c -= '0' - 52; | |
407 | else if (c == '=') { | |
408 | /* padding is almost like (c == 0), except we do | |
409 | * not output NUL resulting only from it; | |
410 | * for now we just trust the data. | |
411 | */ | |
412 | c = 0; | |
413 | } | |
414 | else | |
415 | continue; /* garbage */ | |
416 | switch (pos++) { | |
417 | case 0: | |
418 | acc = (c << 2); | |
419 | break; | |
420 | case 1: | |
421 | *ot++ = (acc | (c >> 4)); | |
422 | acc = (c & 15) << 4; | |
423 | break; | |
424 | case 2: | |
425 | *ot++ = (acc | (c >> 2)); | |
426 | acc = (c & 3) << 6; | |
427 | break; | |
428 | case 3: | |
429 | *ot++ = (acc | c); | |
430 | acc = pos = 0; | |
431 | break; | |
432 | } | |
433 | } | |
434 | *ot = 0; | |
435 | return 0; | |
436 | } | |
437 | ||
438 | static void convert_to_utf8(char *line, char *charset) | |
439 | { | |
440 | if (*charset) { | |
441 | char *in, *out; | |
442 | size_t insize, outsize, nrc; | |
443 | char outbuf[4096]; /* cheat */ | |
444 | iconv_t conv = iconv_open("utf-8", charset); | |
445 | ||
446 | if (conv == (iconv_t) -1) { | |
447 | fprintf(stderr, "cannot convert from %s to utf-8\n", | |
448 | charset); | |
449 | *charset = 0; | |
450 | return; | |
451 | } | |
452 | in = line; | |
453 | insize = strlen(in); | |
454 | out = outbuf; | |
455 | outsize = sizeof(outbuf); | |
456 | nrc = iconv(conv, &in, &insize, &out, &outsize); | |
457 | iconv_close(conv); | |
458 | if (nrc == (size_t) -1) | |
459 | return; | |
460 | *out = 0; | |
461 | strcpy(line, outbuf); | |
462 | } | |
463 | } | |
464 | ||
465 | static void decode_header_bq(char *it) | |
466 | { | |
467 | char *in, *out, *ep, *cp, *sp; | |
468 | char outbuf[1000]; | |
469 | ||
470 | in = it; | |
471 | out = outbuf; | |
472 | while ((ep = strstr(in, "=?")) != NULL) { | |
473 | int sz, encoding; | |
474 | char charset_q[256], piecebuf[256]; | |
475 | if (in != ep) { | |
476 | sz = ep - in; | |
477 | memcpy(out, in, sz); | |
478 | out += sz; | |
479 | in += sz; | |
480 | } | |
481 | /* E.g. | |
482 | * ep : "=?iso-2022-jp?B?GyR...?= foo" | |
483 | * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz" | |
484 | */ | |
485 | ep += 2; | |
486 | cp = strchr(ep, '?'); | |
487 | if (!cp) | |
488 | return; /* no munging */ | |
489 | for (sp = ep; sp < cp; sp++) | |
490 | charset_q[sp - ep] = tolower(*sp); | |
491 | charset_q[cp - ep] = 0; | |
492 | encoding = cp[1]; | |
493 | if (!encoding || cp[2] != '?') | |
494 | return; /* no munging */ | |
495 | ep = strstr(cp + 3, "?="); | |
496 | if (!ep) | |
497 | return; /* no munging */ | |
498 | switch (tolower(encoding)) { | |
499 | default: | |
500 | return; /* no munging */ | |
501 | case 'b': | |
502 | sz = decode_b_segment(cp + 3, piecebuf, ep); | |
503 | break; | |
504 | case 'q': | |
505 | sz = decode_q_segment(cp + 3, piecebuf, ep); | |
506 | break; | |
507 | } | |
508 | if (sz < 0) | |
509 | return; | |
510 | if (metainfo_utf8) | |
511 | convert_to_utf8(piecebuf, charset_q); | |
512 | strcpy(out, piecebuf); | |
513 | out += strlen(out); | |
514 | in = ep + 2; | |
515 | } | |
516 | strcpy(out, in); | |
517 | strcpy(it, outbuf); | |
518 | } | |
519 | ||
520 | static void decode_transfer_encoding(char *line) | |
521 | { | |
522 | char *ep; | |
523 | ||
524 | switch (transfer_encoding) { | |
525 | case TE_QP: | |
526 | ep = line + strlen(line); | |
527 | decode_q_segment(line, line, ep); | |
528 | break; | |
529 | case TE_BASE64: | |
530 | ep = line + strlen(line); | |
531 | decode_b_segment(line, line, ep); | |
532 | break; | |
533 | case TE_DONTCARE: | |
534 | break; | |
535 | } | |
536 | } | |
537 | ||
538 | static void handle_info(void) | |
2744b234 | 539 | { |
d4a9ce78 JH |
540 | char *sub; |
541 | static int done_info = 0; | |
542 | ||
543 | if (done_info) | |
544 | return; | |
545 | ||
546 | done_info = 1; | |
547 | sub = cleanup_subject(subject); | |
2744b234 | 548 | cleanup_space(name); |
62c1f6b4 | 549 | cleanup_space(date); |
2744b234 LT |
550 | cleanup_space(email); |
551 | cleanup_space(sub); | |
2744b234 | 552 | |
d4a9ce78 JH |
553 | /* Unwrap inline B and Q encoding, and optionally |
554 | * normalize the meta information to utf8. | |
555 | */ | |
556 | decode_header_bq(name); | |
557 | decode_header_bq(date); | |
558 | decode_header_bq(email); | |
559 | decode_header_bq(sub); | |
560 | printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n", | |
561 | name, email, sub, date); | |
562 | } | |
563 | ||
564 | /* We are inside message body and have read line[] already. | |
565 | * Spit out the commit log. | |
566 | */ | |
567 | static int handle_commit_msg(void) | |
568 | { | |
569 | if (!cmitmsg) | |
570 | return 0; | |
2744b234 | 571 | do { |
a196d8d4 | 572 | if (!memcmp("diff -", line, 6) || |
fc7ef1e8 LT |
573 | !memcmp("---", line, 3) || |
574 | !memcmp("Index: ", line, 7)) | |
d4a9ce78 JH |
575 | break; |
576 | if ((multipart_boundary[0] && is_multipart_boundary(line))) { | |
577 | /* We come here when the first part had only | |
578 | * the commit message without any patch. We | |
579 | * pretend we have not seen this line yet, and | |
580 | * go back to the loop. | |
581 | */ | |
582 | return 1; | |
583 | } | |
2744b234 | 584 | |
d4a9ce78 JH |
585 | /* Unwrap transfer encoding and optionally |
586 | * normalize the log message to UTF-8. | |
587 | */ | |
588 | decode_transfer_encoding(line); | |
589 | if (metainfo_utf8) | |
590 | convert_to_utf8(line, charset); | |
591 | fputs(line, cmitmsg); | |
2744b234 | 592 | } while (fgets(line, sizeof(line), stdin) != NULL); |
2744b234 | 593 | fclose(cmitmsg); |
d4a9ce78 JH |
594 | cmitmsg = NULL; |
595 | return 0; | |
2744b234 LT |
596 | } |
597 | ||
d4a9ce78 JH |
598 | /* We have done the commit message and have the first |
599 | * line of the patch in line[]. | |
600 | */ | |
601 | static void handle_patch(void) | |
2744b234 | 602 | { |
d4a9ce78 JH |
603 | do { |
604 | if (multipart_boundary[0] && is_multipart_boundary(line)) | |
605 | break; | |
606 | /* Only unwrap transfer encoding but otherwise do not | |
607 | * do anything. We do *NOT* want UTF-8 conversion | |
608 | * here; we are dealing with the user payload. | |
609 | */ | |
610 | decode_transfer_encoding(line); | |
611 | fputs(line, patchfile); | |
612 | patch_lines++; | |
613 | } while (fgets(line, sizeof(line), stdin) != NULL); | |
2744b234 LT |
614 | } |
615 | ||
d4a9ce78 JH |
616 | /* multipart boundary and transfer encoding are set up for us, and we |
617 | * are at the end of the sub header. do equivalent of handle_body up | |
618 | * to the next boundary without closing patchfile --- we will expect | |
619 | * that the first part to contain commit message and a patch, and | |
620 | * handle other parts as pure patches. | |
621 | */ | |
622 | static int handle_multipart_one_part(void) | |
2744b234 | 623 | { |
d4a9ce78 JH |
624 | int seen = 0; |
625 | int n = 0; | |
626 | int len; | |
2744b234 | 627 | |
2744b234 | 628 | while (fgets(line, sizeof(line), stdin) != NULL) { |
d4a9ce78 JH |
629 | again: |
630 | len = eatspace(line); | |
631 | n++; | |
2744b234 LT |
632 | if (!len) |
633 | continue; | |
d4a9ce78 JH |
634 | if (is_multipart_boundary(line)) |
635 | break; | |
636 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
637 | continue; | |
638 | seen = -1; /* no more inbody headers */ | |
2744b234 | 639 | line[len] = '\n'; |
d4a9ce78 JH |
640 | handle_info(); |
641 | if (handle_commit_msg()) | |
642 | goto again; | |
643 | handle_patch(); | |
2744b234 LT |
644 | break; |
645 | } | |
d4a9ce78 JH |
646 | if (n == 0) |
647 | return -1; | |
648 | return 0; | |
2744b234 LT |
649 | } |
650 | ||
d4a9ce78 | 651 | static void handle_multipart_body(void) |
1d8fa411 | 652 | { |
d4a9ce78 JH |
653 | int part_num = 0; |
654 | ||
655 | /* Skip up to the first boundary */ | |
656 | while (fgets(line, sizeof(line), stdin) != NULL) | |
657 | if (is_multipart_boundary(line)) { | |
658 | part_num = 1; | |
659 | break; | |
1d8fa411 | 660 | } |
d4a9ce78 JH |
661 | if (!part_num) |
662 | return; | |
663 | /* We are on boundary line. Start slurping the subhead. */ | |
664 | while (1) { | |
665 | int len = read_one_header_line(line, sizeof(line), stdin); | |
666 | if (!len) { | |
667 | if (handle_multipart_one_part() < 0) | |
668 | return; | |
669 | } | |
670 | else | |
671 | check_subheader_line(line, len); | |
672 | } | |
673 | fclose(patchfile); | |
674 | if (!patch_lines) { | |
675 | fprintf(stderr, "No patch found\n"); | |
676 | exit(1); | |
1d8fa411 | 677 | } |
1d8fa411 JH |
678 | } |
679 | ||
d4a9ce78 JH |
680 | /* Non multipart message */ |
681 | static void handle_body(void) | |
2744b234 | 682 | { |
d4a9ce78 JH |
683 | int seen = 0; |
684 | ||
685 | while (fgets(line, sizeof(line), stdin) != NULL) { | |
686 | int len = eatspace(line); | |
687 | if (!len) | |
688 | continue; | |
689 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
690 | continue; | |
691 | seen = -1; /* no more inbody headers */ | |
692 | line[len] = '\n'; | |
693 | handle_info(); | |
694 | handle_commit_msg(); | |
695 | handle_patch(); | |
696 | break; | |
697 | } | |
698 | fclose(patchfile); | |
699 | if (!patch_lines) { | |
700 | fprintf(stderr, "No patch found\n"); | |
701 | exit(1); | |
702 | } | |
2744b234 LT |
703 | } |
704 | ||
6bff6a60 | 705 | static const char mailinfo_usage[] = |
d4a9ce78 JH |
706 | "git-mailinfo [-k] [-u] msg patch <mail >info"; |
707 | ||
708 | static void usage(void) { | |
709 | fprintf(stderr, "%s\n", mailinfo_usage); | |
710 | exit(1); | |
711 | } | |
712 | ||
713 | int main(int argc, char **argv) | |
2744b234 | 714 | { |
6bff6a60 JH |
715 | while (1 < argc && argv[1][0] == '-') { |
716 | if (!strcmp(argv[1], "-k")) | |
717 | keep_subject = 1; | |
d4a9ce78 JH |
718 | else if (!strcmp(argv[1], "-u")) |
719 | metainfo_utf8 = 1; | |
720 | else | |
721 | usage(); | |
6bff6a60 JH |
722 | argc--; argv++; |
723 | } | |
724 | ||
a196d8d4 | 725 | if (argc != 3) |
2744b234 LT |
726 | usage(); |
727 | cmitmsg = fopen(argv[1], "w"); | |
728 | if (!cmitmsg) { | |
729 | perror(argv[1]); | |
730 | exit(1); | |
731 | } | |
732 | patchfile = fopen(argv[2], "w"); | |
733 | if (!patchfile) { | |
734 | perror(argv[2]); | |
735 | exit(1); | |
736 | } | |
1d8fa411 JH |
737 | while (1) { |
738 | int len = read_one_header_line(line, sizeof(line), stdin); | |
2744b234 | 739 | if (!len) { |
d4a9ce78 JH |
740 | if (multipart_boundary[0]) |
741 | handle_multipart_body(); | |
742 | else | |
743 | handle_body(); | |
2744b234 LT |
744 | break; |
745 | } | |
d4a9ce78 | 746 | check_header_line(line, len); |
2744b234 LT |
747 | } |
748 | return 0; | |
749 | } |