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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> |
a6da9395 | 11 | #include "git-compat-util.h" |
f1f909e3 | 12 | #include "cache.h" |
2744b234 | 13 | |
a196d8d4 | 14 | static FILE *cmitmsg, *patchfile; |
2744b234 | 15 | |
6bff6a60 | 16 | static int keep_subject = 0; |
650e4be5 | 17 | static char *metainfo_charset = NULL; |
2744b234 | 18 | static char line[1000]; |
62c1f6b4 | 19 | static char date[1000]; |
2744b234 LT |
20 | static char name[1000]; |
21 | static char email[1000]; | |
22 | static char subject[1000]; | |
23 | ||
d4a9ce78 JH |
24 | static enum { |
25 | TE_DONTCARE, TE_QP, TE_BASE64, | |
26 | } transfer_encoding; | |
27 | static char charset[256]; | |
28 | ||
29 | static char multipart_boundary[1000]; | |
30 | static int multipart_boundary_len; | |
31 | static int patch_lines = 0; | |
32 | ||
2744b234 LT |
33 | static char *sanity_check(char *name, char *email) |
34 | { | |
35 | int len = strlen(name); | |
36 | if (len < 3 || len > 60) | |
37 | return email; | |
38 | if (strchr(name, '@') || strchr(name, '<') || strchr(name, '>')) | |
39 | return email; | |
40 | return name; | |
41 | } | |
42 | ||
43 | static int handle_from(char *line) | |
44 | { | |
45 | char *at = strchr(line, '@'); | |
46 | char *dst; | |
47 | ||
48 | if (!at) | |
49 | return 0; | |
50 | ||
51 | /* | |
52 | * If we already have one email, don't take any confusing lines | |
53 | */ | |
54 | if (*email && strchr(at+1, '@')) | |
55 | return 0; | |
56 | ||
d4a9ce78 JH |
57 | /* Pick up the string around '@', possibly delimited with <> |
58 | * pair; that is the email part. White them out while copying. | |
59 | */ | |
2744b234 LT |
60 | while (at > line) { |
61 | char c = at[-1]; | |
d4a9ce78 JH |
62 | if (isspace(c)) |
63 | break; | |
64 | if (c == '<') { | |
65 | at[-1] = ' '; | |
2744b234 | 66 | break; |
d4a9ce78 | 67 | } |
2744b234 LT |
68 | at--; |
69 | } | |
70 | dst = email; | |
71 | for (;;) { | |
72 | unsigned char c = *at; | |
d4a9ce78 JH |
73 | if (!c || c == '>' || isspace(c)) { |
74 | if (c == '>') | |
75 | *at = ' '; | |
2744b234 | 76 | break; |
d4a9ce78 | 77 | } |
2744b234 LT |
78 | *at++ = ' '; |
79 | *dst++ = c; | |
80 | } | |
81 | *dst++ = 0; | |
82 | ||
d4a9ce78 JH |
83 | /* The remainder is name. It could be "John Doe <john.doe@xz>" |
84 | * or "john.doe@xz (John Doe)", but we have whited out the | |
85 | * email part, so trim from both ends, possibly removing | |
86 | * the () pair at the end. | |
87 | */ | |
2744b234 LT |
88 | at = line + strlen(line); |
89 | while (at > line) { | |
90 | unsigned char c = *--at; | |
d4a9ce78 JH |
91 | if (!isspace(c)) { |
92 | at[(c == ')') ? 0 : 1] = 0; | |
2744b234 | 93 | break; |
d4a9ce78 | 94 | } |
2744b234 LT |
95 | } |
96 | ||
97 | at = line; | |
98 | for (;;) { | |
99 | unsigned char c = *at; | |
d4a9ce78 JH |
100 | if (!c || !isspace(c)) { |
101 | if (c == '(') | |
102 | at++; | |
2744b234 | 103 | break; |
d4a9ce78 | 104 | } |
2744b234 LT |
105 | at++; |
106 | } | |
2744b234 | 107 | at = sanity_check(at, email); |
2744b234 LT |
108 | strcpy(name, at); |
109 | return 1; | |
110 | } | |
111 | ||
d4a9ce78 | 112 | static int handle_date(char *line) |
62c1f6b4 LT |
113 | { |
114 | strcpy(date, line); | |
d4a9ce78 | 115 | return 0; |
62c1f6b4 LT |
116 | } |
117 | ||
d4a9ce78 | 118 | static int handle_subject(char *line) |
2744b234 LT |
119 | { |
120 | strcpy(subject, line); | |
d4a9ce78 JH |
121 | return 0; |
122 | } | |
123 | ||
124 | /* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt | |
125 | * to have enough heuristics to grok MIME encoded patches often found | |
126 | * on our mailing lists. For example, we do not even treat header lines | |
127 | * case insensitively. | |
128 | */ | |
129 | ||
130 | static int slurp_attr(const char *line, const char *name, char *attr) | |
131 | { | |
132 | char *ends, *ap = strcasestr(line, name); | |
133 | size_t sz; | |
134 | ||
135 | if (!ap) { | |
136 | *attr = 0; | |
137 | return 0; | |
138 | } | |
139 | ap += strlen(name); | |
140 | if (*ap == '"') { | |
141 | ap++; | |
142 | ends = "\""; | |
143 | } | |
144 | else | |
145 | ends = "; \t"; | |
146 | sz = strcspn(ap, ends); | |
147 | memcpy(attr, ap, sz); | |
148 | attr[sz] = 0; | |
149 | return 1; | |
150 | } | |
151 | ||
152 | static int handle_subcontent_type(char *line) | |
153 | { | |
154 | /* We do not want to mess with boundary. Note that we do not | |
155 | * handle nested multipart. | |
156 | */ | |
b893f091 JH |
157 | if (strcasestr(line, "boundary=")) { |
158 | fprintf(stderr, "Not handling nested multipart message.\n"); | |
159 | exit(1); | |
160 | } | |
d4a9ce78 JH |
161 | slurp_attr(line, "charset=", charset); |
162 | if (*charset) { | |
163 | int i, c; | |
164 | for (i = 0; (c = charset[i]) != 0; i++) | |
165 | charset[i] = tolower(c); | |
166 | } | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static int handle_content_type(char *line) | |
171 | { | |
172 | *multipart_boundary = 0; | |
173 | if (slurp_attr(line, "boundary=", multipart_boundary + 2)) { | |
174 | memcpy(multipart_boundary, "--", 2); | |
175 | multipart_boundary_len = strlen(multipart_boundary); | |
176 | } | |
177 | slurp_attr(line, "charset=", charset); | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static int handle_content_transfer_encoding(char *line) | |
182 | { | |
183 | if (strcasestr(line, "base64")) | |
184 | transfer_encoding = TE_BASE64; | |
185 | else if (strcasestr(line, "quoted-printable")) | |
186 | transfer_encoding = TE_QP; | |
187 | else | |
188 | transfer_encoding = TE_DONTCARE; | |
189 | return 0; | |
2744b234 LT |
190 | } |
191 | ||
d4a9ce78 JH |
192 | static int is_multipart_boundary(const char *line) |
193 | { | |
194 | return (!memcmp(line, multipart_boundary, multipart_boundary_len)); | |
195 | } | |
196 | ||
197 | static int eatspace(char *line) | |
2744b234 | 198 | { |
d4a9ce78 JH |
199 | int len = strlen(line); |
200 | while (len > 0 && isspace(line[len-1])) | |
201 | line[--len] = 0; | |
202 | return len; | |
2744b234 LT |
203 | } |
204 | ||
d4a9ce78 JH |
205 | #define SEEN_FROM 01 |
206 | #define SEEN_DATE 02 | |
207 | #define SEEN_SUBJECT 04 | |
208 | ||
209 | /* First lines of body can have From:, Date:, and Subject: */ | |
210 | static int handle_inbody_header(int *seen, char *line) | |
211 | { | |
212 | if (!memcmp("From:", line, 5) && isspace(line[5])) { | |
213 | if (!(*seen & SEEN_FROM) && handle_from(line+6)) { | |
214 | *seen |= SEEN_FROM; | |
215 | return 1; | |
216 | } | |
217 | } | |
218 | if (!memcmp("Date:", line, 5) && isspace(line[5])) { | |
219 | if (!(*seen & SEEN_DATE)) { | |
220 | handle_date(line+6); | |
221 | *seen |= SEEN_DATE; | |
222 | return 1; | |
223 | } | |
224 | } | |
225 | if (!memcmp("Subject:", line, 8) && isspace(line[8])) { | |
226 | if (!(*seen & SEEN_SUBJECT)) { | |
227 | handle_subject(line+9); | |
228 | *seen |= SEEN_SUBJECT; | |
229 | return 1; | |
230 | } | |
231 | } | |
232 | if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) { | |
233 | if (!(*seen & SEEN_SUBJECT)) { | |
234 | handle_subject(line); | |
235 | *seen |= SEEN_SUBJECT; | |
236 | return 1; | |
237 | } | |
238 | } | |
239 | return 0; | |
240 | } | |
241 | ||
242 | static char *cleanup_subject(char *subject) | |
2744b234 | 243 | { |
6bff6a60 JH |
244 | if (keep_subject) |
245 | return subject; | |
2744b234 LT |
246 | for (;;) { |
247 | char *p; | |
248 | int len, remove; | |
249 | switch (*subject) { | |
250 | case 'r': case 'R': | |
251 | if (!memcmp("e:", subject+1, 2)) { | |
252 | subject +=3; | |
253 | continue; | |
254 | } | |
255 | break; | |
256 | case ' ': case '\t': case ':': | |
257 | subject++; | |
258 | continue; | |
259 | ||
260 | case '[': | |
261 | p = strchr(subject, ']'); | |
262 | if (!p) { | |
263 | subject++; | |
264 | continue; | |
265 | } | |
266 | len = strlen(p); | |
267 | remove = p - subject; | |
268 | if (remove <= len *2) { | |
269 | subject = p+1; | |
270 | continue; | |
271 | } | |
272 | break; | |
273 | } | |
274 | return subject; | |
275 | } | |
276 | } | |
277 | ||
278 | static void cleanup_space(char *buf) | |
279 | { | |
280 | unsigned char c; | |
281 | while ((c = *buf) != 0) { | |
282 | buf++; | |
283 | if (isspace(c)) { | |
284 | buf[-1] = ' '; | |
285 | c = *buf; | |
286 | while (isspace(c)) { | |
287 | int len = strlen(buf); | |
288 | memmove(buf, buf+1, len); | |
289 | c = *buf; | |
290 | } | |
291 | } | |
292 | } | |
293 | } | |
294 | ||
d4a9ce78 JH |
295 | typedef int (*header_fn_t)(char *); |
296 | struct header_def { | |
297 | const char *name; | |
298 | header_fn_t func; | |
299 | int namelen; | |
300 | }; | |
301 | ||
302 | static void check_header(char *line, int len, struct header_def *header) | |
303 | { | |
304 | int i; | |
305 | ||
306 | if (header[0].namelen <= 0) { | |
307 | for (i = 0; header[i].name; i++) | |
308 | header[i].namelen = strlen(header[i].name); | |
309 | } | |
310 | for (i = 0; header[i].name; i++) { | |
311 | int len = header[i].namelen; | |
312 | if (!strncasecmp(line, header[i].name, len) && | |
313 | line[len] == ':' && isspace(line[len + 1])) { | |
314 | header[i].func(line + len + 2); | |
315 | break; | |
316 | } | |
317 | } | |
318 | } | |
319 | ||
320 | static void check_subheader_line(char *line, int len) | |
321 | { | |
322 | static struct header_def header[] = { | |
323 | { "Content-Type", handle_subcontent_type }, | |
324 | { "Content-Transfer-Encoding", | |
325 | handle_content_transfer_encoding }, | |
326 | { NULL }, | |
327 | }; | |
328 | check_header(line, len, header); | |
329 | } | |
330 | static void check_header_line(char *line, int len) | |
331 | { | |
332 | static struct header_def header[] = { | |
333 | { "From", handle_from }, | |
334 | { "Date", handle_date }, | |
335 | { "Subject", handle_subject }, | |
336 | { "Content-Type", handle_content_type }, | |
337 | { "Content-Transfer-Encoding", | |
338 | handle_content_transfer_encoding }, | |
339 | { NULL }, | |
340 | }; | |
341 | check_header(line, len, header); | |
342 | } | |
343 | ||
344 | static int read_one_header_line(char *line, int sz, FILE *in) | |
345 | { | |
346 | int ofs = 0; | |
347 | while (ofs < sz) { | |
348 | int peek, len; | |
349 | if (fgets(line + ofs, sz - ofs, in) == NULL) | |
350 | return ofs; | |
351 | len = eatspace(line + ofs); | |
352 | if (len == 0) | |
353 | return ofs; | |
354 | peek = fgetc(in); ungetc(peek, in); | |
355 | if (peek == ' ' || peek == '\t') { | |
356 | /* Yuck, 2822 header "folding" */ | |
357 | ofs += len; | |
358 | continue; | |
359 | } | |
360 | return ofs + len; | |
361 | } | |
362 | return ofs; | |
363 | } | |
364 | ||
365 | static unsigned hexval(int c) | |
366 | { | |
367 | if (c >= '0' && c <= '9') | |
368 | return c - '0'; | |
369 | if (c >= 'a' && c <= 'f') | |
370 | return c - 'a' + 10; | |
371 | if (c >= 'A' && c <= 'F') | |
372 | return c - 'A' + 10; | |
373 | return ~0; | |
374 | } | |
375 | ||
376 | static int decode_q_segment(char *in, char *ot, char *ep) | |
377 | { | |
378 | int c; | |
379 | while ((c = *in++) != 0 && (in <= ep)) { | |
380 | if (c == '=') { | |
381 | int d = *in++; | |
382 | if (d == '\n' || !d) | |
383 | break; /* drop trailing newline */ | |
384 | *ot++ = ((hexval(d) << 4) | hexval(*in++)); | |
385 | } | |
386 | else | |
387 | *ot++ = c; | |
388 | } | |
389 | *ot = 0; | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static int decode_b_segment(char *in, char *ot, char *ep) | |
394 | { | |
395 | /* Decode in..ep, possibly in-place to ot */ | |
396 | int c, pos = 0, acc = 0; | |
397 | ||
398 | while ((c = *in++) != 0 && (in <= ep)) { | |
399 | if (c == '+') | |
400 | c = 62; | |
401 | else if (c == '/') | |
402 | c = 63; | |
403 | else if ('A' <= c && c <= 'Z') | |
404 | c -= 'A'; | |
405 | else if ('a' <= c && c <= 'z') | |
406 | c -= 'a' - 26; | |
407 | else if ('0' <= c && c <= '9') | |
408 | c -= '0' - 52; | |
409 | else if (c == '=') { | |
410 | /* padding is almost like (c == 0), except we do | |
411 | * not output NUL resulting only from it; | |
412 | * for now we just trust the data. | |
413 | */ | |
414 | c = 0; | |
415 | } | |
416 | else | |
417 | continue; /* garbage */ | |
418 | switch (pos++) { | |
419 | case 0: | |
420 | acc = (c << 2); | |
421 | break; | |
422 | case 1: | |
423 | *ot++ = (acc | (c >> 4)); | |
424 | acc = (c & 15) << 4; | |
425 | break; | |
426 | case 2: | |
427 | *ot++ = (acc | (c >> 2)); | |
428 | acc = (c & 3) << 6; | |
429 | break; | |
430 | case 3: | |
431 | *ot++ = (acc | c); | |
432 | acc = pos = 0; | |
433 | break; | |
434 | } | |
435 | } | |
436 | *ot = 0; | |
437 | return 0; | |
438 | } | |
439 | ||
440 | static void convert_to_utf8(char *line, char *charset) | |
441 | { | |
650e4be5 JH |
442 | char *in, *out; |
443 | size_t insize, outsize, nrc; | |
444 | char outbuf[4096]; /* cheat */ | |
445 | static char latin_one[] = "latin-1"; | |
446 | char *input_charset = *charset ? charset : latin_one; | |
447 | iconv_t conv = iconv_open(metainfo_charset, input_charset); | |
448 | ||
449 | if (conv == (iconv_t) -1) { | |
450 | static int warned_latin1_once = 0; | |
451 | if (input_charset != latin_one) { | |
452 | fprintf(stderr, "cannot convert from %s to %s\n", | |
453 | input_charset, metainfo_charset); | |
d4a9ce78 | 454 | *charset = 0; |
d4a9ce78 | 455 | } |
650e4be5 JH |
456 | else if (!warned_latin1_once) { |
457 | warned_latin1_once = 1; | |
458 | fprintf(stderr, "tried to convert from %s to %s, " | |
459 | "but your iconv does not work with it.\n", | |
460 | input_charset, metainfo_charset); | |
461 | } | |
462 | return; | |
d4a9ce78 | 463 | } |
650e4be5 JH |
464 | in = line; |
465 | insize = strlen(in); | |
466 | out = outbuf; | |
467 | outsize = sizeof(outbuf); | |
468 | nrc = iconv(conv, &in, &insize, &out, &outsize); | |
469 | iconv_close(conv); | |
470 | if (nrc == (size_t) -1) | |
471 | return; | |
472 | *out = 0; | |
473 | strcpy(line, outbuf); | |
d4a9ce78 JH |
474 | } |
475 | ||
476 | static void decode_header_bq(char *it) | |
477 | { | |
478 | char *in, *out, *ep, *cp, *sp; | |
479 | char outbuf[1000]; | |
480 | ||
481 | in = it; | |
482 | out = outbuf; | |
483 | while ((ep = strstr(in, "=?")) != NULL) { | |
484 | int sz, encoding; | |
485 | char charset_q[256], piecebuf[256]; | |
486 | if (in != ep) { | |
487 | sz = ep - in; | |
488 | memcpy(out, in, sz); | |
489 | out += sz; | |
490 | in += sz; | |
491 | } | |
492 | /* E.g. | |
493 | * ep : "=?iso-2022-jp?B?GyR...?= foo" | |
494 | * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz" | |
495 | */ | |
496 | ep += 2; | |
497 | cp = strchr(ep, '?'); | |
498 | if (!cp) | |
499 | return; /* no munging */ | |
500 | for (sp = ep; sp < cp; sp++) | |
501 | charset_q[sp - ep] = tolower(*sp); | |
502 | charset_q[cp - ep] = 0; | |
503 | encoding = cp[1]; | |
504 | if (!encoding || cp[2] != '?') | |
505 | return; /* no munging */ | |
506 | ep = strstr(cp + 3, "?="); | |
507 | if (!ep) | |
508 | return; /* no munging */ | |
509 | switch (tolower(encoding)) { | |
510 | default: | |
511 | return; /* no munging */ | |
512 | case 'b': | |
513 | sz = decode_b_segment(cp + 3, piecebuf, ep); | |
514 | break; | |
515 | case 'q': | |
516 | sz = decode_q_segment(cp + 3, piecebuf, ep); | |
517 | break; | |
518 | } | |
519 | if (sz < 0) | |
520 | return; | |
650e4be5 | 521 | if (metainfo_charset) |
d4a9ce78 JH |
522 | convert_to_utf8(piecebuf, charset_q); |
523 | strcpy(out, piecebuf); | |
524 | out += strlen(out); | |
525 | in = ep + 2; | |
526 | } | |
527 | strcpy(out, in); | |
528 | strcpy(it, outbuf); | |
529 | } | |
530 | ||
531 | static void decode_transfer_encoding(char *line) | |
532 | { | |
533 | char *ep; | |
534 | ||
535 | switch (transfer_encoding) { | |
536 | case TE_QP: | |
537 | ep = line + strlen(line); | |
538 | decode_q_segment(line, line, ep); | |
539 | break; | |
540 | case TE_BASE64: | |
541 | ep = line + strlen(line); | |
542 | decode_b_segment(line, line, ep); | |
543 | break; | |
544 | case TE_DONTCARE: | |
545 | break; | |
546 | } | |
547 | } | |
548 | ||
549 | static void handle_info(void) | |
2744b234 | 550 | { |
d4a9ce78 JH |
551 | char *sub; |
552 | static int done_info = 0; | |
553 | ||
554 | if (done_info) | |
555 | return; | |
556 | ||
557 | done_info = 1; | |
558 | sub = cleanup_subject(subject); | |
2744b234 | 559 | cleanup_space(name); |
62c1f6b4 | 560 | cleanup_space(date); |
2744b234 LT |
561 | cleanup_space(email); |
562 | cleanup_space(sub); | |
2744b234 | 563 | |
d4a9ce78 JH |
564 | /* Unwrap inline B and Q encoding, and optionally |
565 | * normalize the meta information to utf8. | |
566 | */ | |
567 | decode_header_bq(name); | |
568 | decode_header_bq(date); | |
569 | decode_header_bq(email); | |
570 | decode_header_bq(sub); | |
571 | printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n", | |
572 | name, email, sub, date); | |
573 | } | |
574 | ||
575 | /* We are inside message body and have read line[] already. | |
576 | * Spit out the commit log. | |
577 | */ | |
578 | static int handle_commit_msg(void) | |
579 | { | |
580 | if (!cmitmsg) | |
581 | return 0; | |
2744b234 | 582 | do { |
a196d8d4 | 583 | if (!memcmp("diff -", line, 6) || |
fc7ef1e8 LT |
584 | !memcmp("---", line, 3) || |
585 | !memcmp("Index: ", line, 7)) | |
d4a9ce78 JH |
586 | break; |
587 | if ((multipart_boundary[0] && is_multipart_boundary(line))) { | |
588 | /* We come here when the first part had only | |
589 | * the commit message without any patch. We | |
590 | * pretend we have not seen this line yet, and | |
591 | * go back to the loop. | |
592 | */ | |
593 | return 1; | |
594 | } | |
2744b234 | 595 | |
d4a9ce78 JH |
596 | /* Unwrap transfer encoding and optionally |
597 | * normalize the log message to UTF-8. | |
598 | */ | |
599 | decode_transfer_encoding(line); | |
650e4be5 | 600 | if (metainfo_charset) |
d4a9ce78 JH |
601 | convert_to_utf8(line, charset); |
602 | fputs(line, cmitmsg); | |
2744b234 | 603 | } while (fgets(line, sizeof(line), stdin) != NULL); |
2744b234 | 604 | fclose(cmitmsg); |
d4a9ce78 JH |
605 | cmitmsg = NULL; |
606 | return 0; | |
2744b234 LT |
607 | } |
608 | ||
d4a9ce78 JH |
609 | /* We have done the commit message and have the first |
610 | * line of the patch in line[]. | |
611 | */ | |
612 | static void handle_patch(void) | |
2744b234 | 613 | { |
d4a9ce78 JH |
614 | do { |
615 | if (multipart_boundary[0] && is_multipart_boundary(line)) | |
616 | break; | |
617 | /* Only unwrap transfer encoding but otherwise do not | |
618 | * do anything. We do *NOT* want UTF-8 conversion | |
619 | * here; we are dealing with the user payload. | |
620 | */ | |
621 | decode_transfer_encoding(line); | |
622 | fputs(line, patchfile); | |
623 | patch_lines++; | |
624 | } while (fgets(line, sizeof(line), stdin) != NULL); | |
2744b234 LT |
625 | } |
626 | ||
d4a9ce78 JH |
627 | /* multipart boundary and transfer encoding are set up for us, and we |
628 | * are at the end of the sub header. do equivalent of handle_body up | |
629 | * to the next boundary without closing patchfile --- we will expect | |
630 | * that the first part to contain commit message and a patch, and | |
631 | * handle other parts as pure patches. | |
632 | */ | |
633 | static int handle_multipart_one_part(void) | |
2744b234 | 634 | { |
d4a9ce78 JH |
635 | int seen = 0; |
636 | int n = 0; | |
637 | int len; | |
2744b234 | 638 | |
2744b234 | 639 | while (fgets(line, sizeof(line), stdin) != NULL) { |
d4a9ce78 JH |
640 | again: |
641 | len = eatspace(line); | |
642 | n++; | |
2744b234 LT |
643 | if (!len) |
644 | continue; | |
d4a9ce78 JH |
645 | if (is_multipart_boundary(line)) |
646 | break; | |
647 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
648 | continue; | |
649 | seen = -1; /* no more inbody headers */ | |
2744b234 | 650 | line[len] = '\n'; |
d4a9ce78 JH |
651 | handle_info(); |
652 | if (handle_commit_msg()) | |
653 | goto again; | |
654 | handle_patch(); | |
2744b234 LT |
655 | break; |
656 | } | |
d4a9ce78 JH |
657 | if (n == 0) |
658 | return -1; | |
659 | return 0; | |
2744b234 LT |
660 | } |
661 | ||
d4a9ce78 | 662 | static void handle_multipart_body(void) |
1d8fa411 | 663 | { |
d4a9ce78 JH |
664 | int part_num = 0; |
665 | ||
666 | /* Skip up to the first boundary */ | |
667 | while (fgets(line, sizeof(line), stdin) != NULL) | |
668 | if (is_multipart_boundary(line)) { | |
669 | part_num = 1; | |
670 | break; | |
1d8fa411 | 671 | } |
d4a9ce78 JH |
672 | if (!part_num) |
673 | return; | |
674 | /* We are on boundary line. Start slurping the subhead. */ | |
675 | while (1) { | |
676 | int len = read_one_header_line(line, sizeof(line), stdin); | |
677 | if (!len) { | |
678 | if (handle_multipart_one_part() < 0) | |
679 | return; | |
680 | } | |
681 | else | |
682 | check_subheader_line(line, len); | |
683 | } | |
684 | fclose(patchfile); | |
685 | if (!patch_lines) { | |
686 | fprintf(stderr, "No patch found\n"); | |
687 | exit(1); | |
1d8fa411 | 688 | } |
1d8fa411 JH |
689 | } |
690 | ||
d4a9ce78 JH |
691 | /* Non multipart message */ |
692 | static void handle_body(void) | |
2744b234 | 693 | { |
d4a9ce78 JH |
694 | int seen = 0; |
695 | ||
696 | while (fgets(line, sizeof(line), stdin) != NULL) { | |
697 | int len = eatspace(line); | |
698 | if (!len) | |
699 | continue; | |
700 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
701 | continue; | |
702 | seen = -1; /* no more inbody headers */ | |
703 | line[len] = '\n'; | |
704 | handle_info(); | |
705 | handle_commit_msg(); | |
706 | handle_patch(); | |
707 | break; | |
708 | } | |
709 | fclose(patchfile); | |
710 | if (!patch_lines) { | |
711 | fprintf(stderr, "No patch found\n"); | |
712 | exit(1); | |
713 | } | |
2744b234 LT |
714 | } |
715 | ||
6bff6a60 | 716 | static const char mailinfo_usage[] = |
9f63892b | 717 | "git-mailinfo [-k] [-u | --encoding=<encoding>] msg patch <mail >info"; |
d4a9ce78 | 718 | |
d4a9ce78 | 719 | int main(int argc, char **argv) |
2744b234 | 720 | { |
f1f909e3 JH |
721 | /* NEEDSWORK: might want to do the optional .git/ directory |
722 | * discovery | |
723 | */ | |
724 | git_config(git_default_config); | |
725 | ||
6bff6a60 JH |
726 | while (1 < argc && argv[1][0] == '-') { |
727 | if (!strcmp(argv[1], "-k")) | |
728 | keep_subject = 1; | |
d4a9ce78 | 729 | else if (!strcmp(argv[1], "-u")) |
f1f909e3 | 730 | metainfo_charset = git_commit_encoding; |
9f63892b JH |
731 | else if (!strncmp(argv[1], "--encoding=", 11)) |
732 | metainfo_charset = argv[1] + 11; | |
d4a9ce78 | 733 | else |
f1f909e3 | 734 | usage(mailinfo_usage); |
6bff6a60 JH |
735 | argc--; argv++; |
736 | } | |
737 | ||
a196d8d4 | 738 | if (argc != 3) |
f1f909e3 | 739 | usage(mailinfo_usage); |
2744b234 LT |
740 | cmitmsg = fopen(argv[1], "w"); |
741 | if (!cmitmsg) { | |
742 | perror(argv[1]); | |
743 | exit(1); | |
744 | } | |
745 | patchfile = fopen(argv[2], "w"); | |
746 | if (!patchfile) { | |
747 | perror(argv[2]); | |
748 | exit(1); | |
749 | } | |
1d8fa411 JH |
750 | while (1) { |
751 | int len = read_one_header_line(line, sizeof(line), stdin); | |
2744b234 | 752 | if (!len) { |
d4a9ce78 JH |
753 | if (multipart_boundary[0]) |
754 | handle_multipart_body(); | |
755 | else | |
756 | handle_body(); | |
2744b234 LT |
757 | break; |
758 | } | |
d4a9ce78 | 759 | check_header_line(line, len); |
2744b234 LT |
760 | } |
761 | return 0; | |
762 | } |