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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 | |
e1e9c254 JH |
12 | #ifdef NO_STRCASESTR |
13 | extern char *gitstrcasestr(const char *haystack, const char *needle); | |
14 | #endif | |
15 | ||
a196d8d4 | 16 | static FILE *cmitmsg, *patchfile; |
2744b234 | 17 | |
6bff6a60 | 18 | static int keep_subject = 0; |
d4a9ce78 | 19 | static int metainfo_utf8 = 0; |
2744b234 | 20 | static char line[1000]; |
62c1f6b4 | 21 | static char date[1000]; |
2744b234 LT |
22 | static char name[1000]; |
23 | static char email[1000]; | |
24 | static char subject[1000]; | |
25 | ||
d4a9ce78 JH |
26 | static enum { |
27 | TE_DONTCARE, TE_QP, TE_BASE64, | |
28 | } transfer_encoding; | |
29 | static char charset[256]; | |
30 | ||
31 | static char multipart_boundary[1000]; | |
32 | static int multipart_boundary_len; | |
33 | static int patch_lines = 0; | |
34 | ||
2744b234 LT |
35 | static char *sanity_check(char *name, char *email) |
36 | { | |
37 | int len = strlen(name); | |
38 | if (len < 3 || len > 60) | |
39 | return email; | |
40 | if (strchr(name, '@') || strchr(name, '<') || strchr(name, '>')) | |
41 | return email; | |
42 | return name; | |
43 | } | |
44 | ||
45 | static int handle_from(char *line) | |
46 | { | |
47 | char *at = strchr(line, '@'); | |
48 | char *dst; | |
49 | ||
50 | if (!at) | |
51 | return 0; | |
52 | ||
53 | /* | |
54 | * If we already have one email, don't take any confusing lines | |
55 | */ | |
56 | if (*email && strchr(at+1, '@')) | |
57 | return 0; | |
58 | ||
d4a9ce78 JH |
59 | /* Pick up the string around '@', possibly delimited with <> |
60 | * pair; that is the email part. White them out while copying. | |
61 | */ | |
2744b234 LT |
62 | while (at > line) { |
63 | char c = at[-1]; | |
d4a9ce78 JH |
64 | if (isspace(c)) |
65 | break; | |
66 | if (c == '<') { | |
67 | at[-1] = ' '; | |
2744b234 | 68 | break; |
d4a9ce78 | 69 | } |
2744b234 LT |
70 | at--; |
71 | } | |
72 | dst = email; | |
73 | for (;;) { | |
74 | unsigned char c = *at; | |
d4a9ce78 JH |
75 | if (!c || c == '>' || isspace(c)) { |
76 | if (c == '>') | |
77 | *at = ' '; | |
2744b234 | 78 | break; |
d4a9ce78 | 79 | } |
2744b234 LT |
80 | *at++ = ' '; |
81 | *dst++ = c; | |
82 | } | |
83 | *dst++ = 0; | |
84 | ||
d4a9ce78 JH |
85 | /* The remainder is name. It could be "John Doe <john.doe@xz>" |
86 | * or "john.doe@xz (John Doe)", but we have whited out the | |
87 | * email part, so trim from both ends, possibly removing | |
88 | * the () pair at the end. | |
89 | */ | |
2744b234 LT |
90 | at = line + strlen(line); |
91 | while (at > line) { | |
92 | unsigned char c = *--at; | |
d4a9ce78 JH |
93 | if (!isspace(c)) { |
94 | at[(c == ')') ? 0 : 1] = 0; | |
2744b234 | 95 | break; |
d4a9ce78 | 96 | } |
2744b234 LT |
97 | } |
98 | ||
99 | at = line; | |
100 | for (;;) { | |
101 | unsigned char c = *at; | |
d4a9ce78 JH |
102 | if (!c || !isspace(c)) { |
103 | if (c == '(') | |
104 | at++; | |
2744b234 | 105 | break; |
d4a9ce78 | 106 | } |
2744b234 LT |
107 | at++; |
108 | } | |
2744b234 | 109 | at = sanity_check(at, email); |
2744b234 LT |
110 | strcpy(name, at); |
111 | return 1; | |
112 | } | |
113 | ||
d4a9ce78 | 114 | static int handle_date(char *line) |
62c1f6b4 LT |
115 | { |
116 | strcpy(date, line); | |
d4a9ce78 | 117 | return 0; |
62c1f6b4 LT |
118 | } |
119 | ||
d4a9ce78 | 120 | static int handle_subject(char *line) |
2744b234 LT |
121 | { |
122 | strcpy(subject, line); | |
d4a9ce78 JH |
123 | return 0; |
124 | } | |
125 | ||
126 | /* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt | |
127 | * to have enough heuristics to grok MIME encoded patches often found | |
128 | * on our mailing lists. For example, we do not even treat header lines | |
129 | * case insensitively. | |
130 | */ | |
131 | ||
132 | static int slurp_attr(const char *line, const char *name, char *attr) | |
133 | { | |
134 | char *ends, *ap = strcasestr(line, name); | |
135 | size_t sz; | |
136 | ||
137 | if (!ap) { | |
138 | *attr = 0; | |
139 | return 0; | |
140 | } | |
141 | ap += strlen(name); | |
142 | if (*ap == '"') { | |
143 | ap++; | |
144 | ends = "\""; | |
145 | } | |
146 | else | |
147 | ends = "; \t"; | |
148 | sz = strcspn(ap, ends); | |
149 | memcpy(attr, ap, sz); | |
150 | attr[sz] = 0; | |
151 | return 1; | |
152 | } | |
153 | ||
154 | static int handle_subcontent_type(char *line) | |
155 | { | |
156 | /* We do not want to mess with boundary. Note that we do not | |
157 | * handle nested multipart. | |
158 | */ | |
b893f091 JH |
159 | if (strcasestr(line, "boundary=")) { |
160 | fprintf(stderr, "Not handling nested multipart message.\n"); | |
161 | exit(1); | |
162 | } | |
d4a9ce78 JH |
163 | slurp_attr(line, "charset=", charset); |
164 | if (*charset) { | |
165 | int i, c; | |
166 | for (i = 0; (c = charset[i]) != 0; i++) | |
167 | charset[i] = tolower(c); | |
168 | } | |
169 | return 0; | |
170 | } | |
171 | ||
172 | static int handle_content_type(char *line) | |
173 | { | |
174 | *multipart_boundary = 0; | |
175 | if (slurp_attr(line, "boundary=", multipart_boundary + 2)) { | |
176 | memcpy(multipart_boundary, "--", 2); | |
177 | multipart_boundary_len = strlen(multipart_boundary); | |
178 | } | |
179 | slurp_attr(line, "charset=", charset); | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static int handle_content_transfer_encoding(char *line) | |
184 | { | |
185 | if (strcasestr(line, "base64")) | |
186 | transfer_encoding = TE_BASE64; | |
187 | else if (strcasestr(line, "quoted-printable")) | |
188 | transfer_encoding = TE_QP; | |
189 | else | |
190 | transfer_encoding = TE_DONTCARE; | |
191 | return 0; | |
2744b234 LT |
192 | } |
193 | ||
d4a9ce78 JH |
194 | static int is_multipart_boundary(const char *line) |
195 | { | |
196 | return (!memcmp(line, multipart_boundary, multipart_boundary_len)); | |
197 | } | |
198 | ||
199 | static int eatspace(char *line) | |
2744b234 | 200 | { |
d4a9ce78 JH |
201 | int len = strlen(line); |
202 | while (len > 0 && isspace(line[len-1])) | |
203 | line[--len] = 0; | |
204 | return len; | |
2744b234 LT |
205 | } |
206 | ||
d4a9ce78 JH |
207 | #define SEEN_FROM 01 |
208 | #define SEEN_DATE 02 | |
209 | #define SEEN_SUBJECT 04 | |
210 | ||
211 | /* First lines of body can have From:, Date:, and Subject: */ | |
212 | static int handle_inbody_header(int *seen, char *line) | |
213 | { | |
214 | if (!memcmp("From:", line, 5) && isspace(line[5])) { | |
215 | if (!(*seen & SEEN_FROM) && handle_from(line+6)) { | |
216 | *seen |= SEEN_FROM; | |
217 | return 1; | |
218 | } | |
219 | } | |
220 | if (!memcmp("Date:", line, 5) && isspace(line[5])) { | |
221 | if (!(*seen & SEEN_DATE)) { | |
222 | handle_date(line+6); | |
223 | *seen |= SEEN_DATE; | |
224 | return 1; | |
225 | } | |
226 | } | |
227 | if (!memcmp("Subject:", line, 8) && isspace(line[8])) { | |
228 | if (!(*seen & SEEN_SUBJECT)) { | |
229 | handle_subject(line+9); | |
230 | *seen |= SEEN_SUBJECT; | |
231 | return 1; | |
232 | } | |
233 | } | |
234 | if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) { | |
235 | if (!(*seen & SEEN_SUBJECT)) { | |
236 | handle_subject(line); | |
237 | *seen |= SEEN_SUBJECT; | |
238 | return 1; | |
239 | } | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
244 | static char *cleanup_subject(char *subject) | |
2744b234 | 245 | { |
6bff6a60 JH |
246 | if (keep_subject) |
247 | return subject; | |
2744b234 LT |
248 | for (;;) { |
249 | char *p; | |
250 | int len, remove; | |
251 | switch (*subject) { | |
252 | case 'r': case 'R': | |
253 | if (!memcmp("e:", subject+1, 2)) { | |
254 | subject +=3; | |
255 | continue; | |
256 | } | |
257 | break; | |
258 | case ' ': case '\t': case ':': | |
259 | subject++; | |
260 | continue; | |
261 | ||
262 | case '[': | |
263 | p = strchr(subject, ']'); | |
264 | if (!p) { | |
265 | subject++; | |
266 | continue; | |
267 | } | |
268 | len = strlen(p); | |
269 | remove = p - subject; | |
270 | if (remove <= len *2) { | |
271 | subject = p+1; | |
272 | continue; | |
273 | } | |
274 | break; | |
275 | } | |
276 | return subject; | |
277 | } | |
278 | } | |
279 | ||
280 | static void cleanup_space(char *buf) | |
281 | { | |
282 | unsigned char c; | |
283 | while ((c = *buf) != 0) { | |
284 | buf++; | |
285 | if (isspace(c)) { | |
286 | buf[-1] = ' '; | |
287 | c = *buf; | |
288 | while (isspace(c)) { | |
289 | int len = strlen(buf); | |
290 | memmove(buf, buf+1, len); | |
291 | c = *buf; | |
292 | } | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
d4a9ce78 JH |
297 | typedef int (*header_fn_t)(char *); |
298 | struct header_def { | |
299 | const char *name; | |
300 | header_fn_t func; | |
301 | int namelen; | |
302 | }; | |
303 | ||
304 | static void check_header(char *line, int len, struct header_def *header) | |
305 | { | |
306 | int i; | |
307 | ||
308 | if (header[0].namelen <= 0) { | |
309 | for (i = 0; header[i].name; i++) | |
310 | header[i].namelen = strlen(header[i].name); | |
311 | } | |
312 | for (i = 0; header[i].name; i++) { | |
313 | int len = header[i].namelen; | |
314 | if (!strncasecmp(line, header[i].name, len) && | |
315 | line[len] == ':' && isspace(line[len + 1])) { | |
316 | header[i].func(line + len + 2); | |
317 | break; | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
322 | static void check_subheader_line(char *line, int len) | |
323 | { | |
324 | static struct header_def header[] = { | |
325 | { "Content-Type", handle_subcontent_type }, | |
326 | { "Content-Transfer-Encoding", | |
327 | handle_content_transfer_encoding }, | |
328 | { NULL }, | |
329 | }; | |
330 | check_header(line, len, header); | |
331 | } | |
332 | static void check_header_line(char *line, int len) | |
333 | { | |
334 | static struct header_def header[] = { | |
335 | { "From", handle_from }, | |
336 | { "Date", handle_date }, | |
337 | { "Subject", handle_subject }, | |
338 | { "Content-Type", handle_content_type }, | |
339 | { "Content-Transfer-Encoding", | |
340 | handle_content_transfer_encoding }, | |
341 | { NULL }, | |
342 | }; | |
343 | check_header(line, len, header); | |
344 | } | |
345 | ||
346 | static int read_one_header_line(char *line, int sz, FILE *in) | |
347 | { | |
348 | int ofs = 0; | |
349 | while (ofs < sz) { | |
350 | int peek, len; | |
351 | if (fgets(line + ofs, sz - ofs, in) == NULL) | |
352 | return ofs; | |
353 | len = eatspace(line + ofs); | |
354 | if (len == 0) | |
355 | return ofs; | |
356 | peek = fgetc(in); ungetc(peek, in); | |
357 | if (peek == ' ' || peek == '\t') { | |
358 | /* Yuck, 2822 header "folding" */ | |
359 | ofs += len; | |
360 | continue; | |
361 | } | |
362 | return ofs + len; | |
363 | } | |
364 | return ofs; | |
365 | } | |
366 | ||
367 | static unsigned hexval(int c) | |
368 | { | |
369 | if (c >= '0' && c <= '9') | |
370 | return c - '0'; | |
371 | if (c >= 'a' && c <= 'f') | |
372 | return c - 'a' + 10; | |
373 | if (c >= 'A' && c <= 'F') | |
374 | return c - 'A' + 10; | |
375 | return ~0; | |
376 | } | |
377 | ||
378 | static int decode_q_segment(char *in, char *ot, char *ep) | |
379 | { | |
380 | int c; | |
381 | while ((c = *in++) != 0 && (in <= ep)) { | |
382 | if (c == '=') { | |
383 | int d = *in++; | |
384 | if (d == '\n' || !d) | |
385 | break; /* drop trailing newline */ | |
386 | *ot++ = ((hexval(d) << 4) | hexval(*in++)); | |
387 | } | |
388 | else | |
389 | *ot++ = c; | |
390 | } | |
391 | *ot = 0; | |
392 | return 0; | |
393 | } | |
394 | ||
395 | static int decode_b_segment(char *in, char *ot, char *ep) | |
396 | { | |
397 | /* Decode in..ep, possibly in-place to ot */ | |
398 | int c, pos = 0, acc = 0; | |
399 | ||
400 | while ((c = *in++) != 0 && (in <= ep)) { | |
401 | if (c == '+') | |
402 | c = 62; | |
403 | else if (c == '/') | |
404 | c = 63; | |
405 | else if ('A' <= c && c <= 'Z') | |
406 | c -= 'A'; | |
407 | else if ('a' <= c && c <= 'z') | |
408 | c -= 'a' - 26; | |
409 | else if ('0' <= c && c <= '9') | |
410 | c -= '0' - 52; | |
411 | else if (c == '=') { | |
412 | /* padding is almost like (c == 0), except we do | |
413 | * not output NUL resulting only from it; | |
414 | * for now we just trust the data. | |
415 | */ | |
416 | c = 0; | |
417 | } | |
418 | else | |
419 | continue; /* garbage */ | |
420 | switch (pos++) { | |
421 | case 0: | |
422 | acc = (c << 2); | |
423 | break; | |
424 | case 1: | |
425 | *ot++ = (acc | (c >> 4)); | |
426 | acc = (c & 15) << 4; | |
427 | break; | |
428 | case 2: | |
429 | *ot++ = (acc | (c >> 2)); | |
430 | acc = (c & 3) << 6; | |
431 | break; | |
432 | case 3: | |
433 | *ot++ = (acc | c); | |
434 | acc = pos = 0; | |
435 | break; | |
436 | } | |
437 | } | |
438 | *ot = 0; | |
439 | return 0; | |
440 | } | |
441 | ||
442 | static void convert_to_utf8(char *line, char *charset) | |
443 | { | |
444 | if (*charset) { | |
445 | char *in, *out; | |
446 | size_t insize, outsize, nrc; | |
447 | char outbuf[4096]; /* cheat */ | |
448 | iconv_t conv = iconv_open("utf-8", charset); | |
449 | ||
450 | if (conv == (iconv_t) -1) { | |
451 | fprintf(stderr, "cannot convert from %s to utf-8\n", | |
452 | charset); | |
453 | *charset = 0; | |
454 | return; | |
455 | } | |
456 | in = line; | |
457 | insize = strlen(in); | |
458 | out = outbuf; | |
459 | outsize = sizeof(outbuf); | |
460 | nrc = iconv(conv, &in, &insize, &out, &outsize); | |
461 | iconv_close(conv); | |
462 | if (nrc == (size_t) -1) | |
463 | return; | |
464 | *out = 0; | |
465 | strcpy(line, outbuf); | |
466 | } | |
467 | } | |
468 | ||
469 | static void decode_header_bq(char *it) | |
470 | { | |
471 | char *in, *out, *ep, *cp, *sp; | |
472 | char outbuf[1000]; | |
473 | ||
474 | in = it; | |
475 | out = outbuf; | |
476 | while ((ep = strstr(in, "=?")) != NULL) { | |
477 | int sz, encoding; | |
478 | char charset_q[256], piecebuf[256]; | |
479 | if (in != ep) { | |
480 | sz = ep - in; | |
481 | memcpy(out, in, sz); | |
482 | out += sz; | |
483 | in += sz; | |
484 | } | |
485 | /* E.g. | |
486 | * ep : "=?iso-2022-jp?B?GyR...?= foo" | |
487 | * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz" | |
488 | */ | |
489 | ep += 2; | |
490 | cp = strchr(ep, '?'); | |
491 | if (!cp) | |
492 | return; /* no munging */ | |
493 | for (sp = ep; sp < cp; sp++) | |
494 | charset_q[sp - ep] = tolower(*sp); | |
495 | charset_q[cp - ep] = 0; | |
496 | encoding = cp[1]; | |
497 | if (!encoding || cp[2] != '?') | |
498 | return; /* no munging */ | |
499 | ep = strstr(cp + 3, "?="); | |
500 | if (!ep) | |
501 | return; /* no munging */ | |
502 | switch (tolower(encoding)) { | |
503 | default: | |
504 | return; /* no munging */ | |
505 | case 'b': | |
506 | sz = decode_b_segment(cp + 3, piecebuf, ep); | |
507 | break; | |
508 | case 'q': | |
509 | sz = decode_q_segment(cp + 3, piecebuf, ep); | |
510 | break; | |
511 | } | |
512 | if (sz < 0) | |
513 | return; | |
514 | if (metainfo_utf8) | |
515 | convert_to_utf8(piecebuf, charset_q); | |
516 | strcpy(out, piecebuf); | |
517 | out += strlen(out); | |
518 | in = ep + 2; | |
519 | } | |
520 | strcpy(out, in); | |
521 | strcpy(it, outbuf); | |
522 | } | |
523 | ||
524 | static void decode_transfer_encoding(char *line) | |
525 | { | |
526 | char *ep; | |
527 | ||
528 | switch (transfer_encoding) { | |
529 | case TE_QP: | |
530 | ep = line + strlen(line); | |
531 | decode_q_segment(line, line, ep); | |
532 | break; | |
533 | case TE_BASE64: | |
534 | ep = line + strlen(line); | |
535 | decode_b_segment(line, line, ep); | |
536 | break; | |
537 | case TE_DONTCARE: | |
538 | break; | |
539 | } | |
540 | } | |
541 | ||
542 | static void handle_info(void) | |
2744b234 | 543 | { |
d4a9ce78 JH |
544 | char *sub; |
545 | static int done_info = 0; | |
546 | ||
547 | if (done_info) | |
548 | return; | |
549 | ||
550 | done_info = 1; | |
551 | sub = cleanup_subject(subject); | |
2744b234 | 552 | cleanup_space(name); |
62c1f6b4 | 553 | cleanup_space(date); |
2744b234 LT |
554 | cleanup_space(email); |
555 | cleanup_space(sub); | |
2744b234 | 556 | |
d4a9ce78 JH |
557 | /* Unwrap inline B and Q encoding, and optionally |
558 | * normalize the meta information to utf8. | |
559 | */ | |
560 | decode_header_bq(name); | |
561 | decode_header_bq(date); | |
562 | decode_header_bq(email); | |
563 | decode_header_bq(sub); | |
564 | printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n", | |
565 | name, email, sub, date); | |
566 | } | |
567 | ||
568 | /* We are inside message body and have read line[] already. | |
569 | * Spit out the commit log. | |
570 | */ | |
571 | static int handle_commit_msg(void) | |
572 | { | |
573 | if (!cmitmsg) | |
574 | return 0; | |
2744b234 | 575 | do { |
a196d8d4 | 576 | if (!memcmp("diff -", line, 6) || |
fc7ef1e8 LT |
577 | !memcmp("---", line, 3) || |
578 | !memcmp("Index: ", line, 7)) | |
d4a9ce78 JH |
579 | break; |
580 | if ((multipart_boundary[0] && is_multipart_boundary(line))) { | |
581 | /* We come here when the first part had only | |
582 | * the commit message without any patch. We | |
583 | * pretend we have not seen this line yet, and | |
584 | * go back to the loop. | |
585 | */ | |
586 | return 1; | |
587 | } | |
2744b234 | 588 | |
d4a9ce78 JH |
589 | /* Unwrap transfer encoding and optionally |
590 | * normalize the log message to UTF-8. | |
591 | */ | |
592 | decode_transfer_encoding(line); | |
593 | if (metainfo_utf8) | |
594 | convert_to_utf8(line, charset); | |
595 | fputs(line, cmitmsg); | |
2744b234 | 596 | } while (fgets(line, sizeof(line), stdin) != NULL); |
2744b234 | 597 | fclose(cmitmsg); |
d4a9ce78 JH |
598 | cmitmsg = NULL; |
599 | return 0; | |
2744b234 LT |
600 | } |
601 | ||
d4a9ce78 JH |
602 | /* We have done the commit message and have the first |
603 | * line of the patch in line[]. | |
604 | */ | |
605 | static void handle_patch(void) | |
2744b234 | 606 | { |
d4a9ce78 JH |
607 | do { |
608 | if (multipart_boundary[0] && is_multipart_boundary(line)) | |
609 | break; | |
610 | /* Only unwrap transfer encoding but otherwise do not | |
611 | * do anything. We do *NOT* want UTF-8 conversion | |
612 | * here; we are dealing with the user payload. | |
613 | */ | |
614 | decode_transfer_encoding(line); | |
615 | fputs(line, patchfile); | |
616 | patch_lines++; | |
617 | } while (fgets(line, sizeof(line), stdin) != NULL); | |
2744b234 LT |
618 | } |
619 | ||
d4a9ce78 JH |
620 | /* multipart boundary and transfer encoding are set up for us, and we |
621 | * are at the end of the sub header. do equivalent of handle_body up | |
622 | * to the next boundary without closing patchfile --- we will expect | |
623 | * that the first part to contain commit message and a patch, and | |
624 | * handle other parts as pure patches. | |
625 | */ | |
626 | static int handle_multipart_one_part(void) | |
2744b234 | 627 | { |
d4a9ce78 JH |
628 | int seen = 0; |
629 | int n = 0; | |
630 | int len; | |
2744b234 | 631 | |
2744b234 | 632 | while (fgets(line, sizeof(line), stdin) != NULL) { |
d4a9ce78 JH |
633 | again: |
634 | len = eatspace(line); | |
635 | n++; | |
2744b234 LT |
636 | if (!len) |
637 | continue; | |
d4a9ce78 JH |
638 | if (is_multipart_boundary(line)) |
639 | break; | |
640 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
641 | continue; | |
642 | seen = -1; /* no more inbody headers */ | |
2744b234 | 643 | line[len] = '\n'; |
d4a9ce78 JH |
644 | handle_info(); |
645 | if (handle_commit_msg()) | |
646 | goto again; | |
647 | handle_patch(); | |
2744b234 LT |
648 | break; |
649 | } | |
d4a9ce78 JH |
650 | if (n == 0) |
651 | return -1; | |
652 | return 0; | |
2744b234 LT |
653 | } |
654 | ||
d4a9ce78 | 655 | static void handle_multipart_body(void) |
1d8fa411 | 656 | { |
d4a9ce78 JH |
657 | int part_num = 0; |
658 | ||
659 | /* Skip up to the first boundary */ | |
660 | while (fgets(line, sizeof(line), stdin) != NULL) | |
661 | if (is_multipart_boundary(line)) { | |
662 | part_num = 1; | |
663 | break; | |
1d8fa411 | 664 | } |
d4a9ce78 JH |
665 | if (!part_num) |
666 | return; | |
667 | /* We are on boundary line. Start slurping the subhead. */ | |
668 | while (1) { | |
669 | int len = read_one_header_line(line, sizeof(line), stdin); | |
670 | if (!len) { | |
671 | if (handle_multipart_one_part() < 0) | |
672 | return; | |
673 | } | |
674 | else | |
675 | check_subheader_line(line, len); | |
676 | } | |
677 | fclose(patchfile); | |
678 | if (!patch_lines) { | |
679 | fprintf(stderr, "No patch found\n"); | |
680 | exit(1); | |
1d8fa411 | 681 | } |
1d8fa411 JH |
682 | } |
683 | ||
d4a9ce78 JH |
684 | /* Non multipart message */ |
685 | static void handle_body(void) | |
2744b234 | 686 | { |
d4a9ce78 JH |
687 | int seen = 0; |
688 | ||
689 | while (fgets(line, sizeof(line), stdin) != NULL) { | |
690 | int len = eatspace(line); | |
691 | if (!len) | |
692 | continue; | |
693 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
694 | continue; | |
695 | seen = -1; /* no more inbody headers */ | |
696 | line[len] = '\n'; | |
697 | handle_info(); | |
698 | handle_commit_msg(); | |
699 | handle_patch(); | |
700 | break; | |
701 | } | |
702 | fclose(patchfile); | |
703 | if (!patch_lines) { | |
704 | fprintf(stderr, "No patch found\n"); | |
705 | exit(1); | |
706 | } | |
2744b234 LT |
707 | } |
708 | ||
6bff6a60 | 709 | static const char mailinfo_usage[] = |
d4a9ce78 JH |
710 | "git-mailinfo [-k] [-u] msg patch <mail >info"; |
711 | ||
712 | static void usage(void) { | |
713 | fprintf(stderr, "%s\n", mailinfo_usage); | |
714 | exit(1); | |
715 | } | |
716 | ||
717 | int main(int argc, char **argv) | |
2744b234 | 718 | { |
6bff6a60 JH |
719 | while (1 < argc && argv[1][0] == '-') { |
720 | if (!strcmp(argv[1], "-k")) | |
721 | keep_subject = 1; | |
d4a9ce78 JH |
722 | else if (!strcmp(argv[1], "-u")) |
723 | metainfo_utf8 = 1; | |
724 | else | |
725 | usage(); | |
6bff6a60 JH |
726 | argc--; argv++; |
727 | } | |
728 | ||
a196d8d4 | 729 | if (argc != 3) |
2744b234 LT |
730 | usage(); |
731 | cmitmsg = fopen(argv[1], "w"); | |
732 | if (!cmitmsg) { | |
733 | perror(argv[1]); | |
734 | exit(1); | |
735 | } | |
736 | patchfile = fopen(argv[2], "w"); | |
737 | if (!patchfile) { | |
738 | perror(argv[2]); | |
739 | exit(1); | |
740 | } | |
1d8fa411 JH |
741 | while (1) { |
742 | int len = read_one_header_line(line, sizeof(line), stdin); | |
2744b234 | 743 | if (!len) { |
d4a9ce78 JH |
744 | if (multipart_boundary[0]) |
745 | handle_multipart_body(); | |
746 | else | |
747 | handle_body(); | |
2744b234 LT |
748 | break; |
749 | } | |
d4a9ce78 | 750 | check_header_line(line, len); |
2744b234 LT |
751 | } |
752 | return 0; | |
753 | } |