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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 | ||
e0e3ba20 JH |
43 | static int bogus_from(char *line) |
44 | { | |
45 | /* John Doe <johndoe> */ | |
46 | char *bra, *ket, *dst, *cp; | |
47 | ||
48 | /* This is fallback, so do not bother if we already have an | |
49 | * e-mail address. | |
50 | */ | |
51 | if (*email) | |
52 | return 0; | |
53 | ||
54 | bra = strchr(line, '<'); | |
55 | if (!bra) | |
56 | return 0; | |
57 | ket = strchr(bra, '>'); | |
58 | if (!ket) | |
59 | return 0; | |
60 | ||
61 | for (dst = email, cp = bra+1; cp < ket; ) | |
62 | *dst++ = *cp++; | |
63 | *dst = 0; | |
64 | for (cp = line; isspace(*cp); cp++) | |
65 | ; | |
66 | for (bra--; isspace(*bra); bra--) | |
67 | *bra = 0; | |
68 | cp = sanity_check(cp, email); | |
69 | strcpy(name, cp); | |
70 | return 1; | |
71 | } | |
72 | ||
2744b234 LT |
73 | static int handle_from(char *line) |
74 | { | |
75 | char *at = strchr(line, '@'); | |
76 | char *dst; | |
77 | ||
78 | if (!at) | |
e0e3ba20 | 79 | return bogus_from(line); |
2744b234 LT |
80 | |
81 | /* | |
82 | * If we already have one email, don't take any confusing lines | |
83 | */ | |
84 | if (*email && strchr(at+1, '@')) | |
85 | return 0; | |
86 | ||
d4a9ce78 JH |
87 | /* Pick up the string around '@', possibly delimited with <> |
88 | * pair; that is the email part. White them out while copying. | |
89 | */ | |
2744b234 LT |
90 | while (at > line) { |
91 | char c = at[-1]; | |
d4a9ce78 JH |
92 | if (isspace(c)) |
93 | break; | |
94 | if (c == '<') { | |
95 | at[-1] = ' '; | |
2744b234 | 96 | break; |
d4a9ce78 | 97 | } |
2744b234 LT |
98 | at--; |
99 | } | |
100 | dst = email; | |
101 | for (;;) { | |
102 | unsigned char c = *at; | |
d4a9ce78 JH |
103 | if (!c || c == '>' || isspace(c)) { |
104 | if (c == '>') | |
105 | *at = ' '; | |
2744b234 | 106 | break; |
d4a9ce78 | 107 | } |
2744b234 LT |
108 | *at++ = ' '; |
109 | *dst++ = c; | |
110 | } | |
111 | *dst++ = 0; | |
112 | ||
d4a9ce78 JH |
113 | /* The remainder is name. It could be "John Doe <john.doe@xz>" |
114 | * or "john.doe@xz (John Doe)", but we have whited out the | |
115 | * email part, so trim from both ends, possibly removing | |
116 | * the () pair at the end. | |
117 | */ | |
2744b234 LT |
118 | at = line + strlen(line); |
119 | while (at > line) { | |
120 | unsigned char c = *--at; | |
d4a9ce78 JH |
121 | if (!isspace(c)) { |
122 | at[(c == ')') ? 0 : 1] = 0; | |
2744b234 | 123 | break; |
d4a9ce78 | 124 | } |
2744b234 LT |
125 | } |
126 | ||
127 | at = line; | |
128 | for (;;) { | |
129 | unsigned char c = *at; | |
d4a9ce78 JH |
130 | if (!c || !isspace(c)) { |
131 | if (c == '(') | |
132 | at++; | |
2744b234 | 133 | break; |
d4a9ce78 | 134 | } |
2744b234 LT |
135 | at++; |
136 | } | |
2744b234 | 137 | at = sanity_check(at, email); |
2744b234 LT |
138 | strcpy(name, at); |
139 | return 1; | |
140 | } | |
141 | ||
d4a9ce78 | 142 | static int handle_date(char *line) |
62c1f6b4 LT |
143 | { |
144 | strcpy(date, line); | |
d4a9ce78 | 145 | return 0; |
62c1f6b4 LT |
146 | } |
147 | ||
d4a9ce78 | 148 | static int handle_subject(char *line) |
2744b234 LT |
149 | { |
150 | strcpy(subject, line); | |
d4a9ce78 JH |
151 | return 0; |
152 | } | |
153 | ||
154 | /* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt | |
155 | * to have enough heuristics to grok MIME encoded patches often found | |
156 | * on our mailing lists. For example, we do not even treat header lines | |
157 | * case insensitively. | |
158 | */ | |
159 | ||
160 | static int slurp_attr(const char *line, const char *name, char *attr) | |
161 | { | |
162 | char *ends, *ap = strcasestr(line, name); | |
163 | size_t sz; | |
164 | ||
165 | if (!ap) { | |
166 | *attr = 0; | |
167 | return 0; | |
168 | } | |
169 | ap += strlen(name); | |
170 | if (*ap == '"') { | |
171 | ap++; | |
172 | ends = "\""; | |
173 | } | |
174 | else | |
175 | ends = "; \t"; | |
176 | sz = strcspn(ap, ends); | |
177 | memcpy(attr, ap, sz); | |
178 | attr[sz] = 0; | |
179 | return 1; | |
180 | } | |
181 | ||
182 | static int handle_subcontent_type(char *line) | |
183 | { | |
184 | /* We do not want to mess with boundary. Note that we do not | |
185 | * handle nested multipart. | |
186 | */ | |
b893f091 JH |
187 | if (strcasestr(line, "boundary=")) { |
188 | fprintf(stderr, "Not handling nested multipart message.\n"); | |
189 | exit(1); | |
190 | } | |
d4a9ce78 JH |
191 | slurp_attr(line, "charset=", charset); |
192 | if (*charset) { | |
193 | int i, c; | |
194 | for (i = 0; (c = charset[i]) != 0; i++) | |
195 | charset[i] = tolower(c); | |
196 | } | |
197 | return 0; | |
198 | } | |
199 | ||
200 | static int handle_content_type(char *line) | |
201 | { | |
202 | *multipart_boundary = 0; | |
203 | if (slurp_attr(line, "boundary=", multipart_boundary + 2)) { | |
204 | memcpy(multipart_boundary, "--", 2); | |
205 | multipart_boundary_len = strlen(multipart_boundary); | |
206 | } | |
207 | slurp_attr(line, "charset=", charset); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | static int handle_content_transfer_encoding(char *line) | |
212 | { | |
213 | if (strcasestr(line, "base64")) | |
214 | transfer_encoding = TE_BASE64; | |
215 | else if (strcasestr(line, "quoted-printable")) | |
216 | transfer_encoding = TE_QP; | |
217 | else | |
218 | transfer_encoding = TE_DONTCARE; | |
219 | return 0; | |
2744b234 LT |
220 | } |
221 | ||
d4a9ce78 JH |
222 | static int is_multipart_boundary(const char *line) |
223 | { | |
224 | return (!memcmp(line, multipart_boundary, multipart_boundary_len)); | |
225 | } | |
226 | ||
227 | static int eatspace(char *line) | |
2744b234 | 228 | { |
d4a9ce78 JH |
229 | int len = strlen(line); |
230 | while (len > 0 && isspace(line[len-1])) | |
231 | line[--len] = 0; | |
232 | return len; | |
2744b234 LT |
233 | } |
234 | ||
d4a9ce78 JH |
235 | #define SEEN_FROM 01 |
236 | #define SEEN_DATE 02 | |
237 | #define SEEN_SUBJECT 04 | |
238 | ||
239 | /* First lines of body can have From:, Date:, and Subject: */ | |
240 | static int handle_inbody_header(int *seen, char *line) | |
241 | { | |
242 | if (!memcmp("From:", line, 5) && isspace(line[5])) { | |
243 | if (!(*seen & SEEN_FROM) && handle_from(line+6)) { | |
244 | *seen |= SEEN_FROM; | |
245 | return 1; | |
246 | } | |
247 | } | |
248 | if (!memcmp("Date:", line, 5) && isspace(line[5])) { | |
249 | if (!(*seen & SEEN_DATE)) { | |
250 | handle_date(line+6); | |
251 | *seen |= SEEN_DATE; | |
252 | return 1; | |
253 | } | |
254 | } | |
255 | if (!memcmp("Subject:", line, 8) && isspace(line[8])) { | |
256 | if (!(*seen & SEEN_SUBJECT)) { | |
257 | handle_subject(line+9); | |
258 | *seen |= SEEN_SUBJECT; | |
259 | return 1; | |
260 | } | |
261 | } | |
262 | if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) { | |
263 | if (!(*seen & SEEN_SUBJECT)) { | |
264 | handle_subject(line); | |
265 | *seen |= SEEN_SUBJECT; | |
266 | return 1; | |
267 | } | |
268 | } | |
269 | return 0; | |
270 | } | |
271 | ||
272 | static char *cleanup_subject(char *subject) | |
2744b234 | 273 | { |
6bff6a60 JH |
274 | if (keep_subject) |
275 | return subject; | |
2744b234 LT |
276 | for (;;) { |
277 | char *p; | |
278 | int len, remove; | |
279 | switch (*subject) { | |
280 | case 'r': case 'R': | |
281 | if (!memcmp("e:", subject+1, 2)) { | |
282 | subject +=3; | |
283 | continue; | |
284 | } | |
285 | break; | |
286 | case ' ': case '\t': case ':': | |
287 | subject++; | |
288 | continue; | |
289 | ||
290 | case '[': | |
291 | p = strchr(subject, ']'); | |
292 | if (!p) { | |
293 | subject++; | |
294 | continue; | |
295 | } | |
296 | len = strlen(p); | |
297 | remove = p - subject; | |
298 | if (remove <= len *2) { | |
299 | subject = p+1; | |
300 | continue; | |
301 | } | |
302 | break; | |
303 | } | |
304 | return subject; | |
305 | } | |
306 | } | |
307 | ||
308 | static void cleanup_space(char *buf) | |
309 | { | |
310 | unsigned char c; | |
311 | while ((c = *buf) != 0) { | |
312 | buf++; | |
313 | if (isspace(c)) { | |
314 | buf[-1] = ' '; | |
315 | c = *buf; | |
316 | while (isspace(c)) { | |
317 | int len = strlen(buf); | |
318 | memmove(buf, buf+1, len); | |
319 | c = *buf; | |
320 | } | |
321 | } | |
322 | } | |
323 | } | |
324 | ||
d4a9ce78 JH |
325 | typedef int (*header_fn_t)(char *); |
326 | struct header_def { | |
327 | const char *name; | |
328 | header_fn_t func; | |
329 | int namelen; | |
330 | }; | |
331 | ||
332 | static void check_header(char *line, int len, struct header_def *header) | |
333 | { | |
334 | int i; | |
335 | ||
336 | if (header[0].namelen <= 0) { | |
337 | for (i = 0; header[i].name; i++) | |
338 | header[i].namelen = strlen(header[i].name); | |
339 | } | |
340 | for (i = 0; header[i].name; i++) { | |
341 | int len = header[i].namelen; | |
342 | if (!strncasecmp(line, header[i].name, len) && | |
343 | line[len] == ':' && isspace(line[len + 1])) { | |
344 | header[i].func(line + len + 2); | |
345 | break; | |
346 | } | |
347 | } | |
348 | } | |
349 | ||
350 | static void check_subheader_line(char *line, int len) | |
351 | { | |
352 | static struct header_def header[] = { | |
353 | { "Content-Type", handle_subcontent_type }, | |
354 | { "Content-Transfer-Encoding", | |
355 | handle_content_transfer_encoding }, | |
356 | { NULL }, | |
357 | }; | |
358 | check_header(line, len, header); | |
359 | } | |
360 | static void check_header_line(char *line, int len) | |
361 | { | |
362 | static struct header_def header[] = { | |
363 | { "From", handle_from }, | |
364 | { "Date", handle_date }, | |
365 | { "Subject", handle_subject }, | |
366 | { "Content-Type", handle_content_type }, | |
367 | { "Content-Transfer-Encoding", | |
368 | handle_content_transfer_encoding }, | |
369 | { NULL }, | |
370 | }; | |
371 | check_header(line, len, header); | |
372 | } | |
373 | ||
374 | static int read_one_header_line(char *line, int sz, FILE *in) | |
375 | { | |
376 | int ofs = 0; | |
377 | while (ofs < sz) { | |
378 | int peek, len; | |
379 | if (fgets(line + ofs, sz - ofs, in) == NULL) | |
380 | return ofs; | |
381 | len = eatspace(line + ofs); | |
382 | if (len == 0) | |
383 | return ofs; | |
384 | peek = fgetc(in); ungetc(peek, in); | |
385 | if (peek == ' ' || peek == '\t') { | |
386 | /* Yuck, 2822 header "folding" */ | |
387 | ofs += len; | |
388 | continue; | |
389 | } | |
390 | return ofs + len; | |
391 | } | |
392 | return ofs; | |
393 | } | |
394 | ||
395 | static unsigned hexval(int c) | |
396 | { | |
397 | if (c >= '0' && c <= '9') | |
398 | return c - '0'; | |
399 | if (c >= 'a' && c <= 'f') | |
400 | return c - 'a' + 10; | |
401 | if (c >= 'A' && c <= 'F') | |
402 | return c - 'A' + 10; | |
403 | return ~0; | |
404 | } | |
405 | ||
406 | static int decode_q_segment(char *in, char *ot, char *ep) | |
407 | { | |
408 | int c; | |
409 | while ((c = *in++) != 0 && (in <= ep)) { | |
410 | if (c == '=') { | |
411 | int d = *in++; | |
412 | if (d == '\n' || !d) | |
413 | break; /* drop trailing newline */ | |
414 | *ot++ = ((hexval(d) << 4) | hexval(*in++)); | |
415 | } | |
416 | else | |
417 | *ot++ = c; | |
418 | } | |
419 | *ot = 0; | |
420 | return 0; | |
421 | } | |
422 | ||
423 | static int decode_b_segment(char *in, char *ot, char *ep) | |
424 | { | |
425 | /* Decode in..ep, possibly in-place to ot */ | |
426 | int c, pos = 0, acc = 0; | |
427 | ||
428 | while ((c = *in++) != 0 && (in <= ep)) { | |
429 | if (c == '+') | |
430 | c = 62; | |
431 | else if (c == '/') | |
432 | c = 63; | |
433 | else if ('A' <= c && c <= 'Z') | |
434 | c -= 'A'; | |
435 | else if ('a' <= c && c <= 'z') | |
436 | c -= 'a' - 26; | |
437 | else if ('0' <= c && c <= '9') | |
438 | c -= '0' - 52; | |
439 | else if (c == '=') { | |
440 | /* padding is almost like (c == 0), except we do | |
441 | * not output NUL resulting only from it; | |
442 | * for now we just trust the data. | |
443 | */ | |
444 | c = 0; | |
445 | } | |
446 | else | |
447 | continue; /* garbage */ | |
448 | switch (pos++) { | |
449 | case 0: | |
450 | acc = (c << 2); | |
451 | break; | |
452 | case 1: | |
453 | *ot++ = (acc | (c >> 4)); | |
454 | acc = (c & 15) << 4; | |
455 | break; | |
456 | case 2: | |
457 | *ot++ = (acc | (c >> 2)); | |
458 | acc = (c & 3) << 6; | |
459 | break; | |
460 | case 3: | |
461 | *ot++ = (acc | c); | |
462 | acc = pos = 0; | |
463 | break; | |
464 | } | |
465 | } | |
466 | *ot = 0; | |
467 | return 0; | |
468 | } | |
469 | ||
470 | static void convert_to_utf8(char *line, char *charset) | |
471 | { | |
650e4be5 JH |
472 | char *in, *out; |
473 | size_t insize, outsize, nrc; | |
474 | char outbuf[4096]; /* cheat */ | |
475 | static char latin_one[] = "latin-1"; | |
476 | char *input_charset = *charset ? charset : latin_one; | |
477 | iconv_t conv = iconv_open(metainfo_charset, input_charset); | |
478 | ||
479 | if (conv == (iconv_t) -1) { | |
480 | static int warned_latin1_once = 0; | |
481 | if (input_charset != latin_one) { | |
482 | fprintf(stderr, "cannot convert from %s to %s\n", | |
483 | input_charset, metainfo_charset); | |
d4a9ce78 | 484 | *charset = 0; |
d4a9ce78 | 485 | } |
650e4be5 JH |
486 | else if (!warned_latin1_once) { |
487 | warned_latin1_once = 1; | |
488 | fprintf(stderr, "tried to convert from %s to %s, " | |
489 | "but your iconv does not work with it.\n", | |
490 | input_charset, metainfo_charset); | |
491 | } | |
492 | return; | |
d4a9ce78 | 493 | } |
650e4be5 JH |
494 | in = line; |
495 | insize = strlen(in); | |
496 | out = outbuf; | |
497 | outsize = sizeof(outbuf); | |
498 | nrc = iconv(conv, &in, &insize, &out, &outsize); | |
499 | iconv_close(conv); | |
500 | if (nrc == (size_t) -1) | |
501 | return; | |
502 | *out = 0; | |
503 | strcpy(line, outbuf); | |
d4a9ce78 JH |
504 | } |
505 | ||
506 | static void decode_header_bq(char *it) | |
507 | { | |
508 | char *in, *out, *ep, *cp, *sp; | |
509 | char outbuf[1000]; | |
510 | ||
511 | in = it; | |
512 | out = outbuf; | |
513 | while ((ep = strstr(in, "=?")) != NULL) { | |
514 | int sz, encoding; | |
515 | char charset_q[256], piecebuf[256]; | |
516 | if (in != ep) { | |
517 | sz = ep - in; | |
518 | memcpy(out, in, sz); | |
519 | out += sz; | |
520 | in += sz; | |
521 | } | |
522 | /* E.g. | |
523 | * ep : "=?iso-2022-jp?B?GyR...?= foo" | |
524 | * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz" | |
525 | */ | |
526 | ep += 2; | |
527 | cp = strchr(ep, '?'); | |
528 | if (!cp) | |
529 | return; /* no munging */ | |
530 | for (sp = ep; sp < cp; sp++) | |
531 | charset_q[sp - ep] = tolower(*sp); | |
532 | charset_q[cp - ep] = 0; | |
533 | encoding = cp[1]; | |
534 | if (!encoding || cp[2] != '?') | |
535 | return; /* no munging */ | |
536 | ep = strstr(cp + 3, "?="); | |
537 | if (!ep) | |
538 | return; /* no munging */ | |
539 | switch (tolower(encoding)) { | |
540 | default: | |
541 | return; /* no munging */ | |
542 | case 'b': | |
543 | sz = decode_b_segment(cp + 3, piecebuf, ep); | |
544 | break; | |
545 | case 'q': | |
546 | sz = decode_q_segment(cp + 3, piecebuf, ep); | |
547 | break; | |
548 | } | |
549 | if (sz < 0) | |
550 | return; | |
650e4be5 | 551 | if (metainfo_charset) |
d4a9ce78 JH |
552 | convert_to_utf8(piecebuf, charset_q); |
553 | strcpy(out, piecebuf); | |
554 | out += strlen(out); | |
555 | in = ep + 2; | |
556 | } | |
557 | strcpy(out, in); | |
558 | strcpy(it, outbuf); | |
559 | } | |
560 | ||
561 | static void decode_transfer_encoding(char *line) | |
562 | { | |
563 | char *ep; | |
564 | ||
565 | switch (transfer_encoding) { | |
566 | case TE_QP: | |
567 | ep = line + strlen(line); | |
568 | decode_q_segment(line, line, ep); | |
569 | break; | |
570 | case TE_BASE64: | |
571 | ep = line + strlen(line); | |
572 | decode_b_segment(line, line, ep); | |
573 | break; | |
574 | case TE_DONTCARE: | |
575 | break; | |
576 | } | |
577 | } | |
578 | ||
579 | static void handle_info(void) | |
2744b234 | 580 | { |
d4a9ce78 JH |
581 | char *sub; |
582 | static int done_info = 0; | |
583 | ||
584 | if (done_info) | |
585 | return; | |
586 | ||
587 | done_info = 1; | |
588 | sub = cleanup_subject(subject); | |
2744b234 | 589 | cleanup_space(name); |
62c1f6b4 | 590 | cleanup_space(date); |
2744b234 LT |
591 | cleanup_space(email); |
592 | cleanup_space(sub); | |
2744b234 | 593 | |
d4a9ce78 JH |
594 | /* Unwrap inline B and Q encoding, and optionally |
595 | * normalize the meta information to utf8. | |
596 | */ | |
597 | decode_header_bq(name); | |
598 | decode_header_bq(date); | |
599 | decode_header_bq(email); | |
600 | decode_header_bq(sub); | |
601 | printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n", | |
602 | name, email, sub, date); | |
603 | } | |
604 | ||
605 | /* We are inside message body and have read line[] already. | |
606 | * Spit out the commit log. | |
607 | */ | |
608 | static int handle_commit_msg(void) | |
609 | { | |
610 | if (!cmitmsg) | |
611 | return 0; | |
2744b234 | 612 | do { |
a196d8d4 | 613 | if (!memcmp("diff -", line, 6) || |
fc7ef1e8 LT |
614 | !memcmp("---", line, 3) || |
615 | !memcmp("Index: ", line, 7)) | |
d4a9ce78 JH |
616 | break; |
617 | if ((multipart_boundary[0] && is_multipart_boundary(line))) { | |
618 | /* We come here when the first part had only | |
619 | * the commit message without any patch. We | |
620 | * pretend we have not seen this line yet, and | |
621 | * go back to the loop. | |
622 | */ | |
623 | return 1; | |
624 | } | |
2744b234 | 625 | |
d4a9ce78 JH |
626 | /* Unwrap transfer encoding and optionally |
627 | * normalize the log message to UTF-8. | |
628 | */ | |
629 | decode_transfer_encoding(line); | |
650e4be5 | 630 | if (metainfo_charset) |
d4a9ce78 JH |
631 | convert_to_utf8(line, charset); |
632 | fputs(line, cmitmsg); | |
2744b234 | 633 | } while (fgets(line, sizeof(line), stdin) != NULL); |
2744b234 | 634 | fclose(cmitmsg); |
d4a9ce78 JH |
635 | cmitmsg = NULL; |
636 | return 0; | |
2744b234 LT |
637 | } |
638 | ||
d4a9ce78 JH |
639 | /* We have done the commit message and have the first |
640 | * line of the patch in line[]. | |
641 | */ | |
642 | static void handle_patch(void) | |
2744b234 | 643 | { |
d4a9ce78 JH |
644 | do { |
645 | if (multipart_boundary[0] && is_multipart_boundary(line)) | |
646 | break; | |
647 | /* Only unwrap transfer encoding but otherwise do not | |
648 | * do anything. We do *NOT* want UTF-8 conversion | |
649 | * here; we are dealing with the user payload. | |
650 | */ | |
651 | decode_transfer_encoding(line); | |
652 | fputs(line, patchfile); | |
653 | patch_lines++; | |
654 | } while (fgets(line, sizeof(line), stdin) != NULL); | |
2744b234 LT |
655 | } |
656 | ||
d4a9ce78 JH |
657 | /* multipart boundary and transfer encoding are set up for us, and we |
658 | * are at the end of the sub header. do equivalent of handle_body up | |
659 | * to the next boundary without closing patchfile --- we will expect | |
660 | * that the first part to contain commit message and a patch, and | |
661 | * handle other parts as pure patches. | |
662 | */ | |
663 | static int handle_multipart_one_part(void) | |
2744b234 | 664 | { |
d4a9ce78 JH |
665 | int seen = 0; |
666 | int n = 0; | |
667 | int len; | |
2744b234 | 668 | |
2744b234 | 669 | while (fgets(line, sizeof(line), stdin) != NULL) { |
d4a9ce78 JH |
670 | again: |
671 | len = eatspace(line); | |
672 | n++; | |
2744b234 LT |
673 | if (!len) |
674 | continue; | |
d4a9ce78 JH |
675 | if (is_multipart_boundary(line)) |
676 | break; | |
677 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
678 | continue; | |
679 | seen = -1; /* no more inbody headers */ | |
2744b234 | 680 | line[len] = '\n'; |
d4a9ce78 JH |
681 | handle_info(); |
682 | if (handle_commit_msg()) | |
683 | goto again; | |
684 | handle_patch(); | |
2744b234 LT |
685 | break; |
686 | } | |
d4a9ce78 JH |
687 | if (n == 0) |
688 | return -1; | |
689 | return 0; | |
2744b234 LT |
690 | } |
691 | ||
d4a9ce78 | 692 | static void handle_multipart_body(void) |
1d8fa411 | 693 | { |
d4a9ce78 JH |
694 | int part_num = 0; |
695 | ||
696 | /* Skip up to the first boundary */ | |
697 | while (fgets(line, sizeof(line), stdin) != NULL) | |
698 | if (is_multipart_boundary(line)) { | |
699 | part_num = 1; | |
700 | break; | |
1d8fa411 | 701 | } |
d4a9ce78 JH |
702 | if (!part_num) |
703 | return; | |
704 | /* We are on boundary line. Start slurping the subhead. */ | |
705 | while (1) { | |
706 | int len = read_one_header_line(line, sizeof(line), stdin); | |
707 | if (!len) { | |
708 | if (handle_multipart_one_part() < 0) | |
709 | return; | |
710 | } | |
711 | else | |
712 | check_subheader_line(line, len); | |
713 | } | |
714 | fclose(patchfile); | |
715 | if (!patch_lines) { | |
716 | fprintf(stderr, "No patch found\n"); | |
717 | exit(1); | |
1d8fa411 | 718 | } |
1d8fa411 JH |
719 | } |
720 | ||
d4a9ce78 JH |
721 | /* Non multipart message */ |
722 | static void handle_body(void) | |
2744b234 | 723 | { |
d4a9ce78 JH |
724 | int seen = 0; |
725 | ||
726 | while (fgets(line, sizeof(line), stdin) != NULL) { | |
727 | int len = eatspace(line); | |
728 | if (!len) | |
729 | continue; | |
730 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
731 | continue; | |
732 | seen = -1; /* no more inbody headers */ | |
733 | line[len] = '\n'; | |
734 | handle_info(); | |
735 | handle_commit_msg(); | |
736 | handle_patch(); | |
737 | break; | |
738 | } | |
739 | fclose(patchfile); | |
740 | if (!patch_lines) { | |
741 | fprintf(stderr, "No patch found\n"); | |
742 | exit(1); | |
743 | } | |
2744b234 LT |
744 | } |
745 | ||
6bff6a60 | 746 | static const char mailinfo_usage[] = |
9f63892b | 747 | "git-mailinfo [-k] [-u | --encoding=<encoding>] msg patch <mail >info"; |
d4a9ce78 | 748 | |
d4a9ce78 | 749 | int main(int argc, char **argv) |
2744b234 | 750 | { |
f1f909e3 JH |
751 | /* NEEDSWORK: might want to do the optional .git/ directory |
752 | * discovery | |
753 | */ | |
754 | git_config(git_default_config); | |
755 | ||
6bff6a60 JH |
756 | while (1 < argc && argv[1][0] == '-') { |
757 | if (!strcmp(argv[1], "-k")) | |
758 | keep_subject = 1; | |
d4a9ce78 | 759 | else if (!strcmp(argv[1], "-u")) |
f1f909e3 | 760 | metainfo_charset = git_commit_encoding; |
9f63892b JH |
761 | else if (!strncmp(argv[1], "--encoding=", 11)) |
762 | metainfo_charset = argv[1] + 11; | |
d4a9ce78 | 763 | else |
f1f909e3 | 764 | usage(mailinfo_usage); |
6bff6a60 JH |
765 | argc--; argv++; |
766 | } | |
767 | ||
a196d8d4 | 768 | if (argc != 3) |
f1f909e3 | 769 | usage(mailinfo_usage); |
2744b234 LT |
770 | cmitmsg = fopen(argv[1], "w"); |
771 | if (!cmitmsg) { | |
772 | perror(argv[1]); | |
773 | exit(1); | |
774 | } | |
775 | patchfile = fopen(argv[2], "w"); | |
776 | if (!patchfile) { | |
777 | perror(argv[2]); | |
778 | exit(1); | |
779 | } | |
1d8fa411 JH |
780 | while (1) { |
781 | int len = read_one_header_line(line, sizeof(line), stdin); | |
2744b234 | 782 | if (!len) { |
d4a9ce78 JH |
783 | if (multipart_boundary[0]) |
784 | handle_multipart_body(); | |
785 | else | |
786 | handle_body(); | |
2744b234 LT |
787 | break; |
788 | } | |
d4a9ce78 | 789 | check_header_line(line, len); |
2744b234 LT |
790 | } |
791 | return 0; | |
792 | } |