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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> | |
b6e56eca | 10 | #ifndef NO_ICONV |
d4a9ce78 | 11 | #include <iconv.h> |
b6e56eca | 12 | #endif |
a6da9395 | 13 | #include "git-compat-util.h" |
f1f909e3 | 14 | #include "cache.h" |
2744b234 | 15 | |
a196d8d4 | 16 | static FILE *cmitmsg, *patchfile; |
2744b234 | 17 | |
6bff6a60 | 18 | static int keep_subject = 0; |
650e4be5 | 19 | static char *metainfo_charset = NULL; |
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 | ||
e0e3ba20 JH |
45 | static int bogus_from(char *line) |
46 | { | |
47 | /* John Doe <johndoe> */ | |
48 | char *bra, *ket, *dst, *cp; | |
49 | ||
50 | /* This is fallback, so do not bother if we already have an | |
51 | * e-mail address. | |
52 | */ | |
53 | if (*email) | |
54 | return 0; | |
55 | ||
56 | bra = strchr(line, '<'); | |
57 | if (!bra) | |
58 | return 0; | |
59 | ket = strchr(bra, '>'); | |
60 | if (!ket) | |
61 | return 0; | |
62 | ||
63 | for (dst = email, cp = bra+1; cp < ket; ) | |
64 | *dst++ = *cp++; | |
65 | *dst = 0; | |
66 | for (cp = line; isspace(*cp); cp++) | |
67 | ; | |
68 | for (bra--; isspace(*bra); bra--) | |
69 | *bra = 0; | |
70 | cp = sanity_check(cp, email); | |
71 | strcpy(name, cp); | |
72 | return 1; | |
73 | } | |
74 | ||
2744b234 LT |
75 | static int handle_from(char *line) |
76 | { | |
77 | char *at = strchr(line, '@'); | |
78 | char *dst; | |
79 | ||
80 | if (!at) | |
e0e3ba20 | 81 | return bogus_from(line); |
2744b234 LT |
82 | |
83 | /* | |
84 | * If we already have one email, don't take any confusing lines | |
85 | */ | |
86 | if (*email && strchr(at+1, '@')) | |
87 | return 0; | |
88 | ||
d4a9ce78 JH |
89 | /* Pick up the string around '@', possibly delimited with <> |
90 | * pair; that is the email part. White them out while copying. | |
91 | */ | |
2744b234 LT |
92 | while (at > line) { |
93 | char c = at[-1]; | |
d4a9ce78 JH |
94 | if (isspace(c)) |
95 | break; | |
96 | if (c == '<') { | |
97 | at[-1] = ' '; | |
2744b234 | 98 | break; |
d4a9ce78 | 99 | } |
2744b234 LT |
100 | at--; |
101 | } | |
102 | dst = email; | |
103 | for (;;) { | |
104 | unsigned char c = *at; | |
d4a9ce78 JH |
105 | if (!c || c == '>' || isspace(c)) { |
106 | if (c == '>') | |
107 | *at = ' '; | |
2744b234 | 108 | break; |
d4a9ce78 | 109 | } |
2744b234 LT |
110 | *at++ = ' '; |
111 | *dst++ = c; | |
112 | } | |
113 | *dst++ = 0; | |
114 | ||
d4a9ce78 JH |
115 | /* The remainder is name. It could be "John Doe <john.doe@xz>" |
116 | * or "john.doe@xz (John Doe)", but we have whited out the | |
117 | * email part, so trim from both ends, possibly removing | |
118 | * the () pair at the end. | |
119 | */ | |
2744b234 LT |
120 | at = line + strlen(line); |
121 | while (at > line) { | |
122 | unsigned char c = *--at; | |
d4a9ce78 JH |
123 | if (!isspace(c)) { |
124 | at[(c == ')') ? 0 : 1] = 0; | |
2744b234 | 125 | break; |
d4a9ce78 | 126 | } |
2744b234 LT |
127 | } |
128 | ||
129 | at = line; | |
130 | for (;;) { | |
131 | unsigned char c = *at; | |
d4a9ce78 JH |
132 | if (!c || !isspace(c)) { |
133 | if (c == '(') | |
134 | at++; | |
2744b234 | 135 | break; |
d4a9ce78 | 136 | } |
2744b234 LT |
137 | at++; |
138 | } | |
2744b234 | 139 | at = sanity_check(at, email); |
2744b234 LT |
140 | strcpy(name, at); |
141 | return 1; | |
142 | } | |
143 | ||
d4a9ce78 | 144 | static int handle_date(char *line) |
62c1f6b4 LT |
145 | { |
146 | strcpy(date, line); | |
d4a9ce78 | 147 | return 0; |
62c1f6b4 LT |
148 | } |
149 | ||
d4a9ce78 | 150 | static int handle_subject(char *line) |
2744b234 LT |
151 | { |
152 | strcpy(subject, line); | |
d4a9ce78 JH |
153 | return 0; |
154 | } | |
155 | ||
156 | /* NOTE NOTE NOTE. We do not claim we do full MIME. We just attempt | |
157 | * to have enough heuristics to grok MIME encoded patches often found | |
158 | * on our mailing lists. For example, we do not even treat header lines | |
159 | * case insensitively. | |
160 | */ | |
161 | ||
162 | static int slurp_attr(const char *line, const char *name, char *attr) | |
163 | { | |
164 | char *ends, *ap = strcasestr(line, name); | |
165 | size_t sz; | |
166 | ||
167 | if (!ap) { | |
168 | *attr = 0; | |
169 | return 0; | |
170 | } | |
171 | ap += strlen(name); | |
172 | if (*ap == '"') { | |
173 | ap++; | |
174 | ends = "\""; | |
175 | } | |
176 | else | |
177 | ends = "; \t"; | |
178 | sz = strcspn(ap, ends); | |
179 | memcpy(attr, ap, sz); | |
180 | attr[sz] = 0; | |
181 | return 1; | |
182 | } | |
183 | ||
184 | static int handle_subcontent_type(char *line) | |
185 | { | |
186 | /* We do not want to mess with boundary. Note that we do not | |
187 | * handle nested multipart. | |
188 | */ | |
b893f091 JH |
189 | if (strcasestr(line, "boundary=")) { |
190 | fprintf(stderr, "Not handling nested multipart message.\n"); | |
191 | exit(1); | |
192 | } | |
d4a9ce78 JH |
193 | slurp_attr(line, "charset=", charset); |
194 | if (*charset) { | |
195 | int i, c; | |
196 | for (i = 0; (c = charset[i]) != 0; i++) | |
197 | charset[i] = tolower(c); | |
198 | } | |
199 | return 0; | |
200 | } | |
201 | ||
202 | static int handle_content_type(char *line) | |
203 | { | |
204 | *multipart_boundary = 0; | |
205 | if (slurp_attr(line, "boundary=", multipart_boundary + 2)) { | |
206 | memcpy(multipart_boundary, "--", 2); | |
207 | multipart_boundary_len = strlen(multipart_boundary); | |
208 | } | |
209 | slurp_attr(line, "charset=", charset); | |
210 | return 0; | |
211 | } | |
212 | ||
213 | static int handle_content_transfer_encoding(char *line) | |
214 | { | |
215 | if (strcasestr(line, "base64")) | |
216 | transfer_encoding = TE_BASE64; | |
217 | else if (strcasestr(line, "quoted-printable")) | |
218 | transfer_encoding = TE_QP; | |
219 | else | |
220 | transfer_encoding = TE_DONTCARE; | |
221 | return 0; | |
2744b234 LT |
222 | } |
223 | ||
d4a9ce78 JH |
224 | static int is_multipart_boundary(const char *line) |
225 | { | |
226 | return (!memcmp(line, multipart_boundary, multipart_boundary_len)); | |
227 | } | |
228 | ||
229 | static int eatspace(char *line) | |
2744b234 | 230 | { |
d4a9ce78 JH |
231 | int len = strlen(line); |
232 | while (len > 0 && isspace(line[len-1])) | |
233 | line[--len] = 0; | |
234 | return len; | |
2744b234 LT |
235 | } |
236 | ||
d4a9ce78 JH |
237 | #define SEEN_FROM 01 |
238 | #define SEEN_DATE 02 | |
239 | #define SEEN_SUBJECT 04 | |
240 | ||
241 | /* First lines of body can have From:, Date:, and Subject: */ | |
242 | static int handle_inbody_header(int *seen, char *line) | |
243 | { | |
244 | if (!memcmp("From:", line, 5) && isspace(line[5])) { | |
245 | if (!(*seen & SEEN_FROM) && handle_from(line+6)) { | |
246 | *seen |= SEEN_FROM; | |
247 | return 1; | |
248 | } | |
249 | } | |
250 | if (!memcmp("Date:", line, 5) && isspace(line[5])) { | |
251 | if (!(*seen & SEEN_DATE)) { | |
252 | handle_date(line+6); | |
253 | *seen |= SEEN_DATE; | |
254 | return 1; | |
255 | } | |
256 | } | |
257 | if (!memcmp("Subject:", line, 8) && isspace(line[8])) { | |
258 | if (!(*seen & SEEN_SUBJECT)) { | |
259 | handle_subject(line+9); | |
260 | *seen |= SEEN_SUBJECT; | |
261 | return 1; | |
262 | } | |
263 | } | |
264 | if (!memcmp("[PATCH]", line, 7) && isspace(line[7])) { | |
265 | if (!(*seen & SEEN_SUBJECT)) { | |
266 | handle_subject(line); | |
267 | *seen |= SEEN_SUBJECT; | |
268 | return 1; | |
269 | } | |
270 | } | |
271 | return 0; | |
272 | } | |
273 | ||
274 | static char *cleanup_subject(char *subject) | |
2744b234 | 275 | { |
6bff6a60 JH |
276 | if (keep_subject) |
277 | return subject; | |
2744b234 LT |
278 | for (;;) { |
279 | char *p; | |
280 | int len, remove; | |
281 | switch (*subject) { | |
282 | case 'r': case 'R': | |
283 | if (!memcmp("e:", subject+1, 2)) { | |
284 | subject +=3; | |
285 | continue; | |
286 | } | |
287 | break; | |
288 | case ' ': case '\t': case ':': | |
289 | subject++; | |
290 | continue; | |
291 | ||
292 | case '[': | |
293 | p = strchr(subject, ']'); | |
294 | if (!p) { | |
295 | subject++; | |
296 | continue; | |
297 | } | |
298 | len = strlen(p); | |
299 | remove = p - subject; | |
300 | if (remove <= len *2) { | |
301 | subject = p+1; | |
302 | continue; | |
303 | } | |
304 | break; | |
305 | } | |
306 | return subject; | |
307 | } | |
308 | } | |
309 | ||
310 | static void cleanup_space(char *buf) | |
311 | { | |
312 | unsigned char c; | |
313 | while ((c = *buf) != 0) { | |
314 | buf++; | |
315 | if (isspace(c)) { | |
316 | buf[-1] = ' '; | |
317 | c = *buf; | |
318 | while (isspace(c)) { | |
319 | int len = strlen(buf); | |
320 | memmove(buf, buf+1, len); | |
321 | c = *buf; | |
322 | } | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
d4a9ce78 JH |
327 | typedef int (*header_fn_t)(char *); |
328 | struct header_def { | |
329 | const char *name; | |
330 | header_fn_t func; | |
331 | int namelen; | |
332 | }; | |
333 | ||
334 | static void check_header(char *line, int len, struct header_def *header) | |
335 | { | |
336 | int i; | |
337 | ||
338 | if (header[0].namelen <= 0) { | |
339 | for (i = 0; header[i].name; i++) | |
340 | header[i].namelen = strlen(header[i].name); | |
341 | } | |
342 | for (i = 0; header[i].name; i++) { | |
343 | int len = header[i].namelen; | |
344 | if (!strncasecmp(line, header[i].name, len) && | |
345 | line[len] == ':' && isspace(line[len + 1])) { | |
346 | header[i].func(line + len + 2); | |
347 | break; | |
348 | } | |
349 | } | |
350 | } | |
351 | ||
352 | static void check_subheader_line(char *line, int len) | |
353 | { | |
354 | static struct header_def header[] = { | |
355 | { "Content-Type", handle_subcontent_type }, | |
356 | { "Content-Transfer-Encoding", | |
357 | handle_content_transfer_encoding }, | |
358 | { NULL }, | |
359 | }; | |
360 | check_header(line, len, header); | |
361 | } | |
362 | static void check_header_line(char *line, int len) | |
363 | { | |
364 | static struct header_def header[] = { | |
365 | { "From", handle_from }, | |
366 | { "Date", handle_date }, | |
367 | { "Subject", handle_subject }, | |
368 | { "Content-Type", handle_content_type }, | |
369 | { "Content-Transfer-Encoding", | |
370 | handle_content_transfer_encoding }, | |
371 | { NULL }, | |
372 | }; | |
373 | check_header(line, len, header); | |
374 | } | |
375 | ||
376 | static int read_one_header_line(char *line, int sz, FILE *in) | |
377 | { | |
378 | int ofs = 0; | |
379 | while (ofs < sz) { | |
380 | int peek, len; | |
381 | if (fgets(line + ofs, sz - ofs, in) == NULL) | |
382 | return ofs; | |
383 | len = eatspace(line + ofs); | |
384 | if (len == 0) | |
385 | return ofs; | |
386 | peek = fgetc(in); ungetc(peek, in); | |
387 | if (peek == ' ' || peek == '\t') { | |
388 | /* Yuck, 2822 header "folding" */ | |
389 | ofs += len; | |
390 | continue; | |
391 | } | |
392 | return ofs + len; | |
393 | } | |
394 | return ofs; | |
395 | } | |
396 | ||
397 | static unsigned hexval(int c) | |
398 | { | |
399 | if (c >= '0' && c <= '9') | |
400 | return c - '0'; | |
401 | if (c >= 'a' && c <= 'f') | |
402 | return c - 'a' + 10; | |
403 | if (c >= 'A' && c <= 'F') | |
404 | return c - 'A' + 10; | |
405 | return ~0; | |
406 | } | |
407 | ||
408 | static int decode_q_segment(char *in, char *ot, char *ep) | |
409 | { | |
410 | int c; | |
411 | while ((c = *in++) != 0 && (in <= ep)) { | |
412 | if (c == '=') { | |
413 | int d = *in++; | |
414 | if (d == '\n' || !d) | |
415 | break; /* drop trailing newline */ | |
416 | *ot++ = ((hexval(d) << 4) | hexval(*in++)); | |
417 | } | |
418 | else | |
419 | *ot++ = c; | |
420 | } | |
421 | *ot = 0; | |
422 | return 0; | |
423 | } | |
424 | ||
425 | static int decode_b_segment(char *in, char *ot, char *ep) | |
426 | { | |
427 | /* Decode in..ep, possibly in-place to ot */ | |
428 | int c, pos = 0, acc = 0; | |
429 | ||
430 | while ((c = *in++) != 0 && (in <= ep)) { | |
431 | if (c == '+') | |
432 | c = 62; | |
433 | else if (c == '/') | |
434 | c = 63; | |
435 | else if ('A' <= c && c <= 'Z') | |
436 | c -= 'A'; | |
437 | else if ('a' <= c && c <= 'z') | |
438 | c -= 'a' - 26; | |
439 | else if ('0' <= c && c <= '9') | |
440 | c -= '0' - 52; | |
441 | else if (c == '=') { | |
442 | /* padding is almost like (c == 0), except we do | |
443 | * not output NUL resulting only from it; | |
444 | * for now we just trust the data. | |
445 | */ | |
446 | c = 0; | |
447 | } | |
448 | else | |
449 | continue; /* garbage */ | |
450 | switch (pos++) { | |
451 | case 0: | |
452 | acc = (c << 2); | |
453 | break; | |
454 | case 1: | |
455 | *ot++ = (acc | (c >> 4)); | |
456 | acc = (c & 15) << 4; | |
457 | break; | |
458 | case 2: | |
459 | *ot++ = (acc | (c >> 2)); | |
460 | acc = (c & 3) << 6; | |
461 | break; | |
462 | case 3: | |
463 | *ot++ = (acc | c); | |
464 | acc = pos = 0; | |
465 | break; | |
466 | } | |
467 | } | |
468 | *ot = 0; | |
469 | return 0; | |
470 | } | |
471 | ||
472 | static void convert_to_utf8(char *line, char *charset) | |
473 | { | |
b6e56eca | 474 | #ifndef NO_ICONV |
650e4be5 JH |
475 | char *in, *out; |
476 | size_t insize, outsize, nrc; | |
477 | char outbuf[4096]; /* cheat */ | |
ac44f3e7 | 478 | static char latin_one[] = "latin1"; |
650e4be5 JH |
479 | char *input_charset = *charset ? charset : latin_one; |
480 | iconv_t conv = iconv_open(metainfo_charset, input_charset); | |
481 | ||
482 | if (conv == (iconv_t) -1) { | |
483 | static int warned_latin1_once = 0; | |
484 | if (input_charset != latin_one) { | |
485 | fprintf(stderr, "cannot convert from %s to %s\n", | |
486 | input_charset, metainfo_charset); | |
d4a9ce78 | 487 | *charset = 0; |
d4a9ce78 | 488 | } |
650e4be5 JH |
489 | else if (!warned_latin1_once) { |
490 | warned_latin1_once = 1; | |
491 | fprintf(stderr, "tried to convert from %s to %s, " | |
492 | "but your iconv does not work with it.\n", | |
493 | input_charset, metainfo_charset); | |
494 | } | |
495 | return; | |
d4a9ce78 | 496 | } |
650e4be5 JH |
497 | in = line; |
498 | insize = strlen(in); | |
499 | out = outbuf; | |
500 | outsize = sizeof(outbuf); | |
501 | nrc = iconv(conv, &in, &insize, &out, &outsize); | |
502 | iconv_close(conv); | |
503 | if (nrc == (size_t) -1) | |
504 | return; | |
505 | *out = 0; | |
506 | strcpy(line, outbuf); | |
b6e56eca | 507 | #endif |
d4a9ce78 JH |
508 | } |
509 | ||
510 | static void decode_header_bq(char *it) | |
511 | { | |
512 | char *in, *out, *ep, *cp, *sp; | |
513 | char outbuf[1000]; | |
514 | ||
515 | in = it; | |
516 | out = outbuf; | |
517 | while ((ep = strstr(in, "=?")) != NULL) { | |
518 | int sz, encoding; | |
519 | char charset_q[256], piecebuf[256]; | |
520 | if (in != ep) { | |
521 | sz = ep - in; | |
522 | memcpy(out, in, sz); | |
523 | out += sz; | |
524 | in += sz; | |
525 | } | |
526 | /* E.g. | |
527 | * ep : "=?iso-2022-jp?B?GyR...?= foo" | |
528 | * ep : "=?ISO-8859-1?Q?Foo=FCbar?= baz" | |
529 | */ | |
530 | ep += 2; | |
531 | cp = strchr(ep, '?'); | |
532 | if (!cp) | |
533 | return; /* no munging */ | |
534 | for (sp = ep; sp < cp; sp++) | |
535 | charset_q[sp - ep] = tolower(*sp); | |
536 | charset_q[cp - ep] = 0; | |
537 | encoding = cp[1]; | |
538 | if (!encoding || cp[2] != '?') | |
539 | return; /* no munging */ | |
540 | ep = strstr(cp + 3, "?="); | |
541 | if (!ep) | |
542 | return; /* no munging */ | |
543 | switch (tolower(encoding)) { | |
544 | default: | |
545 | return; /* no munging */ | |
546 | case 'b': | |
547 | sz = decode_b_segment(cp + 3, piecebuf, ep); | |
548 | break; | |
549 | case 'q': | |
550 | sz = decode_q_segment(cp + 3, piecebuf, ep); | |
551 | break; | |
552 | } | |
553 | if (sz < 0) | |
554 | return; | |
650e4be5 | 555 | if (metainfo_charset) |
d4a9ce78 JH |
556 | convert_to_utf8(piecebuf, charset_q); |
557 | strcpy(out, piecebuf); | |
558 | out += strlen(out); | |
559 | in = ep + 2; | |
560 | } | |
561 | strcpy(out, in); | |
562 | strcpy(it, outbuf); | |
563 | } | |
564 | ||
565 | static void decode_transfer_encoding(char *line) | |
566 | { | |
567 | char *ep; | |
568 | ||
569 | switch (transfer_encoding) { | |
570 | case TE_QP: | |
571 | ep = line + strlen(line); | |
572 | decode_q_segment(line, line, ep); | |
573 | break; | |
574 | case TE_BASE64: | |
575 | ep = line + strlen(line); | |
576 | decode_b_segment(line, line, ep); | |
577 | break; | |
578 | case TE_DONTCARE: | |
579 | break; | |
580 | } | |
581 | } | |
582 | ||
583 | static void handle_info(void) | |
2744b234 | 584 | { |
d4a9ce78 JH |
585 | char *sub; |
586 | static int done_info = 0; | |
587 | ||
588 | if (done_info) | |
589 | return; | |
590 | ||
591 | done_info = 1; | |
592 | sub = cleanup_subject(subject); | |
2744b234 | 593 | cleanup_space(name); |
62c1f6b4 | 594 | cleanup_space(date); |
2744b234 LT |
595 | cleanup_space(email); |
596 | cleanup_space(sub); | |
2744b234 | 597 | |
d4a9ce78 JH |
598 | /* Unwrap inline B and Q encoding, and optionally |
599 | * normalize the meta information to utf8. | |
600 | */ | |
601 | decode_header_bq(name); | |
602 | decode_header_bq(date); | |
603 | decode_header_bq(email); | |
604 | decode_header_bq(sub); | |
605 | printf("Author: %s\nEmail: %s\nSubject: %s\nDate: %s\n\n", | |
606 | name, email, sub, date); | |
607 | } | |
608 | ||
609 | /* We are inside message body and have read line[] already. | |
610 | * Spit out the commit log. | |
611 | */ | |
612 | static int handle_commit_msg(void) | |
613 | { | |
614 | if (!cmitmsg) | |
615 | return 0; | |
2744b234 | 616 | do { |
a196d8d4 | 617 | if (!memcmp("diff -", line, 6) || |
fc7ef1e8 LT |
618 | !memcmp("---", line, 3) || |
619 | !memcmp("Index: ", line, 7)) | |
d4a9ce78 JH |
620 | break; |
621 | if ((multipart_boundary[0] && is_multipart_boundary(line))) { | |
622 | /* We come here when the first part had only | |
623 | * the commit message without any patch. We | |
624 | * pretend we have not seen this line yet, and | |
625 | * go back to the loop. | |
626 | */ | |
627 | return 1; | |
628 | } | |
2744b234 | 629 | |
d4a9ce78 JH |
630 | /* Unwrap transfer encoding and optionally |
631 | * normalize the log message to UTF-8. | |
632 | */ | |
633 | decode_transfer_encoding(line); | |
650e4be5 | 634 | if (metainfo_charset) |
d4a9ce78 JH |
635 | convert_to_utf8(line, charset); |
636 | fputs(line, cmitmsg); | |
2744b234 | 637 | } while (fgets(line, sizeof(line), stdin) != NULL); |
2744b234 | 638 | fclose(cmitmsg); |
d4a9ce78 JH |
639 | cmitmsg = NULL; |
640 | return 0; | |
2744b234 LT |
641 | } |
642 | ||
d4a9ce78 JH |
643 | /* We have done the commit message and have the first |
644 | * line of the patch in line[]. | |
645 | */ | |
646 | static void handle_patch(void) | |
2744b234 | 647 | { |
d4a9ce78 JH |
648 | do { |
649 | if (multipart_boundary[0] && is_multipart_boundary(line)) | |
650 | break; | |
651 | /* Only unwrap transfer encoding but otherwise do not | |
652 | * do anything. We do *NOT* want UTF-8 conversion | |
653 | * here; we are dealing with the user payload. | |
654 | */ | |
655 | decode_transfer_encoding(line); | |
656 | fputs(line, patchfile); | |
657 | patch_lines++; | |
658 | } while (fgets(line, sizeof(line), stdin) != NULL); | |
2744b234 LT |
659 | } |
660 | ||
d4a9ce78 JH |
661 | /* multipart boundary and transfer encoding are set up for us, and we |
662 | * are at the end of the sub header. do equivalent of handle_body up | |
663 | * to the next boundary without closing patchfile --- we will expect | |
664 | * that the first part to contain commit message and a patch, and | |
665 | * handle other parts as pure patches. | |
666 | */ | |
667 | static int handle_multipart_one_part(void) | |
2744b234 | 668 | { |
d4a9ce78 JH |
669 | int seen = 0; |
670 | int n = 0; | |
671 | int len; | |
2744b234 | 672 | |
2744b234 | 673 | while (fgets(line, sizeof(line), stdin) != NULL) { |
d4a9ce78 JH |
674 | again: |
675 | len = eatspace(line); | |
676 | n++; | |
2744b234 LT |
677 | if (!len) |
678 | continue; | |
d4a9ce78 JH |
679 | if (is_multipart_boundary(line)) |
680 | break; | |
681 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
682 | continue; | |
683 | seen = -1; /* no more inbody headers */ | |
2744b234 | 684 | line[len] = '\n'; |
d4a9ce78 JH |
685 | handle_info(); |
686 | if (handle_commit_msg()) | |
687 | goto again; | |
688 | handle_patch(); | |
2744b234 LT |
689 | break; |
690 | } | |
d4a9ce78 JH |
691 | if (n == 0) |
692 | return -1; | |
693 | return 0; | |
2744b234 LT |
694 | } |
695 | ||
d4a9ce78 | 696 | static void handle_multipart_body(void) |
1d8fa411 | 697 | { |
d4a9ce78 JH |
698 | int part_num = 0; |
699 | ||
700 | /* Skip up to the first boundary */ | |
701 | while (fgets(line, sizeof(line), stdin) != NULL) | |
702 | if (is_multipart_boundary(line)) { | |
703 | part_num = 1; | |
704 | break; | |
1d8fa411 | 705 | } |
d4a9ce78 JH |
706 | if (!part_num) |
707 | return; | |
708 | /* We are on boundary line. Start slurping the subhead. */ | |
709 | while (1) { | |
710 | int len = read_one_header_line(line, sizeof(line), stdin); | |
711 | if (!len) { | |
712 | if (handle_multipart_one_part() < 0) | |
713 | return; | |
8bc5c04a JH |
714 | /* Reset per part headers */ |
715 | transfer_encoding = TE_DONTCARE; | |
716 | charset[0] = 0; | |
d4a9ce78 JH |
717 | } |
718 | else | |
719 | check_subheader_line(line, len); | |
720 | } | |
721 | fclose(patchfile); | |
722 | if (!patch_lines) { | |
723 | fprintf(stderr, "No patch found\n"); | |
724 | exit(1); | |
1d8fa411 | 725 | } |
1d8fa411 JH |
726 | } |
727 | ||
d4a9ce78 JH |
728 | /* Non multipart message */ |
729 | static void handle_body(void) | |
2744b234 | 730 | { |
d4a9ce78 JH |
731 | int seen = 0; |
732 | ||
733 | while (fgets(line, sizeof(line), stdin) != NULL) { | |
734 | int len = eatspace(line); | |
735 | if (!len) | |
736 | continue; | |
737 | if (0 <= seen && handle_inbody_header(&seen, line)) | |
738 | continue; | |
739 | seen = -1; /* no more inbody headers */ | |
740 | line[len] = '\n'; | |
741 | handle_info(); | |
742 | handle_commit_msg(); | |
743 | handle_patch(); | |
744 | break; | |
745 | } | |
746 | fclose(patchfile); | |
747 | if (!patch_lines) { | |
748 | fprintf(stderr, "No patch found\n"); | |
749 | exit(1); | |
750 | } | |
2744b234 LT |
751 | } |
752 | ||
6bff6a60 | 753 | static const char mailinfo_usage[] = |
9f63892b | 754 | "git-mailinfo [-k] [-u | --encoding=<encoding>] msg patch <mail >info"; |
d4a9ce78 | 755 | |
d4a9ce78 | 756 | int main(int argc, char **argv) |
2744b234 | 757 | { |
f1f909e3 JH |
758 | /* NEEDSWORK: might want to do the optional .git/ directory |
759 | * discovery | |
760 | */ | |
761 | git_config(git_default_config); | |
762 | ||
6bff6a60 JH |
763 | while (1 < argc && argv[1][0] == '-') { |
764 | if (!strcmp(argv[1], "-k")) | |
765 | keep_subject = 1; | |
d4a9ce78 | 766 | else if (!strcmp(argv[1], "-u")) |
f1f909e3 | 767 | metainfo_charset = git_commit_encoding; |
9f63892b JH |
768 | else if (!strncmp(argv[1], "--encoding=", 11)) |
769 | metainfo_charset = argv[1] + 11; | |
d4a9ce78 | 770 | else |
f1f909e3 | 771 | usage(mailinfo_usage); |
6bff6a60 JH |
772 | argc--; argv++; |
773 | } | |
774 | ||
a196d8d4 | 775 | if (argc != 3) |
f1f909e3 | 776 | usage(mailinfo_usage); |
2744b234 LT |
777 | cmitmsg = fopen(argv[1], "w"); |
778 | if (!cmitmsg) { | |
779 | perror(argv[1]); | |
780 | exit(1); | |
781 | } | |
782 | patchfile = fopen(argv[2], "w"); | |
783 | if (!patchfile) { | |
784 | perror(argv[2]); | |
785 | exit(1); | |
786 | } | |
1d8fa411 JH |
787 | while (1) { |
788 | int len = read_one_header_line(line, sizeof(line), stdin); | |
2744b234 | 789 | if (!len) { |
d4a9ce78 JH |
790 | if (multipart_boundary[0]) |
791 | handle_multipart_body(); | |
792 | else | |
793 | handle_body(); | |
2744b234 LT |
794 | break; |
795 | } | |
d4a9ce78 | 796 | check_header_line(line, len); |
2744b234 LT |
797 | } |
798 | return 0; | |
799 | } |