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c988f1f4 | 1 | /* $Cambridge: exim/src/src/string.c,v 1.2 2005/01/04 10:00:42 ph10 Exp $ */ |
059ec3d9 PH |
2 | |
3 | /************************************************* | |
4 | * Exim - an Internet mail transport agent * | |
5 | *************************************************/ | |
6 | ||
c988f1f4 | 7 | /* Copyright (c) University of Cambridge 1995 - 2005 */ |
059ec3d9 PH |
8 | /* See the file NOTICE for conditions of use and distribution. */ |
9 | ||
10 | /* Miscellaneous string-handling functions. Some are not required for | |
11 | utilities and tests, and are cut out by the COMPILE_UTILITY macro. */ | |
12 | ||
13 | ||
14 | #include "exim.h" | |
15 | ||
16 | ||
17 | #ifndef COMPILE_UTILITY | |
18 | /************************************************* | |
19 | * Test for IP address * | |
20 | *************************************************/ | |
21 | ||
22 | /* This used just to be a regular expression, but with IPv6 things are a bit | |
23 | more complicated. If the address contains a colon, it is assumed to be a v6 | |
24 | address (assuming HAVE_IPV6 is set). If a mask is permitted and one is present, | |
25 | and maskptr is not NULL, its offset is placed there. | |
26 | ||
27 | Arguments: | |
28 | s a string | |
29 | maskptr NULL if no mask is permitted to follow | |
30 | otherwise, points to an int where the offset of '/' is placed | |
31 | ||
32 | Returns: 0 if the string is not a textual representation of an IP address | |
33 | 4 if it is an IPv4 address | |
34 | 6 if it is an IPv6 address | |
35 | */ | |
36 | ||
37 | int | |
38 | string_is_ip_address(uschar *s, int *maskptr) | |
39 | { | |
40 | int i; | |
41 | int yield = 4; | |
42 | ||
43 | /* If an optional mask is permitted, check for it. If found, pass back the | |
44 | offset. */ | |
45 | ||
46 | if (maskptr != NULL) | |
47 | { | |
48 | uschar *ss = s + Ustrlen(s); | |
49 | *maskptr = 0; | |
50 | if (s != ss && isdigit(*(--ss))) | |
51 | { | |
52 | while (ss > s && isdigit(ss[-1])) ss--; | |
53 | if (ss > s && *(--ss) == '/') *maskptr = ss - s; | |
54 | } | |
55 | } | |
56 | ||
57 | /* A colon anywhere in the string => IPv6 address */ | |
58 | ||
59 | if (Ustrchr(s, ':') != NULL) | |
60 | { | |
61 | BOOL had_double_colon = FALSE; | |
62 | BOOL v4end = FALSE; | |
63 | int count = 0; | |
64 | ||
65 | yield = 6; | |
66 | ||
67 | /* An IPv6 address must start with hex digit or double colon. A single | |
68 | colon is invalid. */ | |
69 | ||
70 | if (*s == ':' && *(++s) != ':') return 0; | |
71 | ||
72 | /* Now read up to 8 components consisting of up to 4 hex digits each. There | |
73 | may be one and only one appearance of double colon, which implies any number | |
74 | of binary zero bits. The number of preceding components is held in count. */ | |
75 | ||
76 | for (count = 0; count < 8; count++) | |
77 | { | |
78 | /* If the end of the string is reached before reading 8 components, the | |
79 | address is valid provided a double colon has been read. This also applies | |
80 | if we hit the / that introduces a mask or the % that introduces the | |
81 | interface specifier (scope id) of a link-local address. */ | |
82 | ||
83 | if (*s == 0 || *s == '%' || *s == '/') return had_double_colon? yield : 0; | |
84 | ||
85 | /* If a component starts with an additional colon, we have hit a double | |
86 | colon. This is permitted to appear once only, and counts as at least | |
87 | one component. The final component may be of this form. */ | |
88 | ||
89 | if (*s == ':') | |
90 | { | |
91 | if (had_double_colon) return 0; | |
92 | had_double_colon = TRUE; | |
93 | s++; | |
94 | continue; | |
95 | } | |
96 | ||
97 | /* If the remainder of the string contains a dot but no colons, we | |
98 | can expect a trailing IPv4 address. This is valid if either there has | |
99 | been no double-colon and this is the 7th component (with the IPv4 address | |
100 | being the 7th & 8th components), OR if there has been a double-colon | |
101 | and fewer than 6 components. */ | |
102 | ||
103 | if (Ustrchr(s, ':') == NULL && Ustrchr(s, '.') != NULL) | |
104 | { | |
105 | if ((!had_double_colon && count != 6) || | |
106 | (had_double_colon && count > 6)) return 0; | |
107 | v4end = TRUE; | |
108 | yield = 6; | |
109 | break; | |
110 | } | |
111 | ||
112 | /* Check for at least one and not more than 4 hex digits for this | |
113 | component. */ | |
114 | ||
115 | if (!isxdigit(*s++)) return 0; | |
116 | if (isxdigit(*s) && isxdigit(*(++s)) && isxdigit(*(++s))) s++; | |
117 | ||
118 | /* If the component is terminated by colon and there is more to | |
119 | follow, skip over the colon. If there is no more to follow the address is | |
120 | invalid. */ | |
121 | ||
122 | if (*s == ':' && *(++s) == 0) return 0; | |
123 | } | |
124 | ||
125 | /* If about to handle a trailing IPv4 address, drop through. Otherwise | |
126 | all is well if we are at the end of the string or at the mask or at a percent | |
127 | sign, which introduces the interface specifier (scope id) of a link local | |
128 | address. */ | |
129 | ||
130 | if (!v4end) return (*s == 0 || *s == '%' || *s == '/')? yield : 0; | |
131 | } | |
132 | ||
133 | /* Test for IPv4 address, which may be the tail-end of an IPv6 address. */ | |
134 | ||
135 | for (i = 0; i < 4; i++) | |
136 | { | |
137 | if (i != 0 && *s++ != '.') return 0; | |
138 | if (!isdigit(*s++)) return 0; | |
139 | if (isdigit(*s) && isdigit(*(++s))) s++; | |
140 | } | |
141 | ||
142 | return (*s == 0 || *s == '/')? yield : 0; | |
143 | } | |
144 | #endif /* COMPILE_UTILITY */ | |
145 | ||
146 | ||
147 | /************************************************* | |
148 | * Format message size * | |
149 | *************************************************/ | |
150 | ||
151 | /* Convert a message size in bytes to printing form, rounding | |
152 | according to the magnitude of the number. A value of zero causes | |
153 | a string of spaces to be returned. | |
154 | ||
155 | Arguments: | |
156 | size the message size in bytes | |
157 | buffer where to put the answer | |
158 | ||
159 | Returns: pointer to the buffer | |
160 | a string of exactly 5 characters is normally returned | |
161 | */ | |
162 | ||
163 | uschar * | |
164 | string_format_size(int size, uschar *buffer) | |
165 | { | |
166 | if (size == 0) Ustrcpy(CS buffer, " "); | |
167 | else if (size < 1024) sprintf(CS buffer, "%5d", size); | |
168 | else if (size < 10*1024) | |
169 | sprintf(CS buffer, "%4.1fK", (double)size / 1024.0); | |
170 | else if (size < 1024*1024) | |
171 | sprintf(CS buffer, "%4dK", (size + 512)/1024); | |
172 | else if (size < 10*1024*1024) | |
173 | sprintf(CS buffer, "%4.1fM", (double)size / (1024.0 * 1024.0)); | |
174 | else | |
175 | sprintf(CS buffer, "%4dM", (size + 512 * 1024)/(1024*1024)); | |
176 | return buffer; | |
177 | } | |
178 | ||
179 | ||
180 | ||
181 | #ifndef COMPILE_UTILITY | |
182 | /************************************************* | |
183 | * Convert a number to base 62 format * | |
184 | *************************************************/ | |
185 | ||
186 | /* Convert a long integer into an ASCII base 62 string. For Cygwin the value of | |
187 | BASE_62 is actually 36. Always return exactly 6 characters plus zero, in a | |
188 | static area. | |
189 | ||
190 | Argument: a long integer | |
191 | Returns: pointer to base 62 string | |
192 | */ | |
193 | ||
194 | uschar * | |
195 | string_base62(unsigned long int value) | |
196 | { | |
197 | static uschar yield[7]; | |
198 | uschar *p = yield + sizeof(yield) - 1; | |
199 | *p = 0; | |
200 | while (p > yield) | |
201 | { | |
202 | *(--p) = base62_chars[value % BASE_62]; | |
203 | value /= BASE_62; | |
204 | } | |
205 | return yield; | |
206 | } | |
207 | #endif /* COMPILE_UTILITY */ | |
208 | ||
209 | ||
210 | ||
211 | #ifndef COMPILE_UTILITY | |
212 | /************************************************* | |
213 | * Interpret escape sequence * | |
214 | *************************************************/ | |
215 | ||
216 | /* This function is called from several places where escape sequences are to be | |
217 | interpreted in strings. | |
218 | ||
219 | Arguments: | |
220 | pp points a pointer to the initiating "\" in the string; | |
221 | the pointer gets updated to point to the final character | |
222 | Returns: the value of the character escape | |
223 | */ | |
224 | ||
225 | int | |
226 | string_interpret_escape(uschar **pp) | |
227 | { | |
228 | int ch; | |
229 | uschar *p = *pp; | |
230 | ch = *(++p); | |
231 | if (isdigit(ch) && ch != '8' && ch != '9') | |
232 | { | |
233 | ch -= '0'; | |
234 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
235 | { | |
236 | ch = ch * 8 + *(++p) - '0'; | |
237 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
238 | ch = ch * 8 + *(++p) - '0'; | |
239 | } | |
240 | } | |
241 | else switch(ch) | |
242 | { | |
243 | case 'n': ch = '\n'; break; | |
244 | case 'r': ch = '\r'; break; | |
245 | case 't': ch = '\t'; break; | |
246 | case 'x': | |
247 | ch = 0; | |
248 | if (isxdigit(p[1])) | |
249 | { | |
250 | ch = ch * 16 + | |
251 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
252 | if (isxdigit(p[1])) ch = ch * 16 + | |
253 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
254 | } | |
255 | break; | |
256 | } | |
257 | *pp = p; | |
258 | return ch; | |
259 | } | |
260 | #endif /* COMPILE_UTILITY */ | |
261 | ||
262 | ||
263 | ||
264 | #ifndef COMPILE_UTILITY | |
265 | /************************************************* | |
266 | * Ensure string is printable * | |
267 | *************************************************/ | |
268 | ||
269 | /* This function is called for critical strings. It checks for any | |
270 | non-printing characters, and if any are found, it makes a new copy | |
271 | of the string with suitable escape sequences. It is most often called by the | |
272 | macro string_printing(), which sets allow_tab TRUE. | |
273 | ||
274 | Arguments: | |
275 | s the input string | |
276 | allow_tab TRUE to allow tab as a printing character | |
277 | ||
278 | Returns: string with non-printers encoded as printing sequences | |
279 | */ | |
280 | ||
281 | uschar * | |
282 | string_printing2(uschar *s, BOOL allow_tab) | |
283 | { | |
284 | int nonprintcount = 0; | |
285 | int length = 0; | |
286 | uschar *t = s; | |
287 | uschar *ss, *tt; | |
288 | ||
289 | while (*t != 0) | |
290 | { | |
291 | int c = *t++; | |
292 | if (!mac_isprint(c) || (!allow_tab && c == '\t')) nonprintcount++; | |
293 | length++; | |
294 | } | |
295 | ||
296 | if (nonprintcount == 0) return s; | |
297 | ||
298 | /* Get a new block of store guaranteed big enough to hold the | |
299 | expanded string. */ | |
300 | ||
301 | ss = store_get(length + nonprintcount * 4 + 1); | |
302 | ||
303 | /* Copy everying, escaping non printers. */ | |
304 | ||
305 | t = s; | |
306 | tt = ss; | |
307 | ||
308 | while (*t != 0) | |
309 | { | |
310 | int c = *t; | |
311 | if (mac_isprint(c) && (allow_tab || c != '\t')) *tt++ = *t++; else | |
312 | { | |
313 | *tt++ = '\\'; | |
314 | switch (*t) | |
315 | { | |
316 | case '\n': *tt++ = 'n'; break; | |
317 | case '\r': *tt++ = 'r'; break; | |
318 | case '\b': *tt++ = 'b'; break; | |
319 | case '\v': *tt++ = 'v'; break; | |
320 | case '\f': *tt++ = 'f'; break; | |
321 | case '\t': *tt++ = 't'; break; | |
322 | default: sprintf(CS tt, "%03o", *t); tt += 3; break; | |
323 | } | |
324 | t++; | |
325 | } | |
326 | } | |
327 | *tt = 0; | |
328 | return ss; | |
329 | } | |
330 | #endif /* COMPILE_UTILITY */ | |
331 | ||
332 | ||
333 | ||
334 | ||
335 | /************************************************* | |
336 | * Copy and save string * | |
337 | *************************************************/ | |
338 | ||
339 | /* This function assumes that memcpy() is faster than strcpy(). | |
340 | ||
341 | Argument: string to copy | |
342 | Returns: copy of string in new store | |
343 | */ | |
344 | ||
345 | uschar * | |
346 | string_copy(uschar *s) | |
347 | { | |
348 | int len = Ustrlen(s) + 1; | |
349 | uschar *ss = store_get(len); | |
350 | memcpy(ss, s, len); | |
351 | return ss; | |
352 | } | |
353 | ||
354 | ||
355 | ||
356 | /************************************************* | |
357 | * Copy and save string in malloc'd store * | |
358 | *************************************************/ | |
359 | ||
360 | /* This function assumes that memcpy() is faster than strcpy(). | |
361 | ||
362 | Argument: string to copy | |
363 | Returns: copy of string in new store | |
364 | */ | |
365 | ||
366 | uschar * | |
367 | string_copy_malloc(uschar *s) | |
368 | { | |
369 | int len = Ustrlen(s) + 1; | |
370 | uschar *ss = store_malloc(len); | |
371 | memcpy(ss, s, len); | |
372 | return ss; | |
373 | } | |
374 | ||
375 | ||
376 | ||
377 | /************************************************* | |
378 | * Copy, lowercase and save string * | |
379 | *************************************************/ | |
380 | ||
381 | /* | |
382 | Argument: string to copy | |
383 | Returns: copy of string in new store, with letters lowercased | |
384 | */ | |
385 | ||
386 | uschar * | |
387 | string_copylc(uschar *s) | |
388 | { | |
389 | uschar *ss = store_get(Ustrlen(s) + 1); | |
390 | uschar *p = ss; | |
391 | while (*s != 0) *p++ = tolower(*s++); | |
392 | *p = 0; | |
393 | return ss; | |
394 | } | |
395 | ||
396 | ||
397 | ||
398 | /************************************************* | |
399 | * Copy and save string, given length * | |
400 | *************************************************/ | |
401 | ||
402 | /* It is assumed the data contains no zeros. A zero is added | |
403 | onto the end. | |
404 | ||
405 | Arguments: | |
406 | s string to copy | |
407 | n number of characters | |
408 | ||
409 | Returns: copy of string in new store | |
410 | */ | |
411 | ||
412 | uschar * | |
413 | string_copyn(uschar *s, int n) | |
414 | { | |
415 | uschar *ss = store_get(n + 1); | |
416 | Ustrncpy(ss, s, n); | |
417 | ss[n] = 0; | |
418 | return ss; | |
419 | } | |
420 | ||
421 | ||
422 | /************************************************* | |
423 | * Copy, lowercase, and save string, given length * | |
424 | *************************************************/ | |
425 | ||
426 | /* It is assumed the data contains no zeros. A zero is added | |
427 | onto the end. | |
428 | ||
429 | Arguments: | |
430 | s string to copy | |
431 | n number of characters | |
432 | ||
433 | Returns: copy of string in new store, with letters lowercased | |
434 | */ | |
435 | ||
436 | uschar * | |
437 | string_copynlc(uschar *s, int n) | |
438 | { | |
439 | uschar *ss = store_get(n + 1); | |
440 | uschar *p = ss; | |
441 | while (n-- > 0) *p++ = tolower(*s++); | |
442 | *p = 0; | |
443 | return ss; | |
444 | } | |
445 | ||
446 | ||
447 | ||
448 | /************************************************* | |
449 | * Copy returned DNS domain name, de-escaping * | |
450 | *************************************************/ | |
451 | ||
452 | /* If a domain name contains top-bit characters, some resolvers return | |
453 | the fully qualified name with those characters turned into escapes. The | |
454 | convention is a backslash followed by _decimal_ digits. We convert these | |
455 | back into the original binary values. This will be relevant when | |
456 | allow_utf8_domains is set true and UTF-8 characters are used in domain | |
457 | names. Backslash can also be used to escape other characters, though we | |
458 | shouldn't come across them in domain names. | |
459 | ||
460 | Argument: the domain name string | |
461 | Returns: copy of string in new store, de-escaped | |
462 | */ | |
463 | ||
464 | uschar * | |
465 | string_copy_dnsdomain(uschar *s) | |
466 | { | |
467 | uschar *yield; | |
468 | uschar *ss = yield = store_get(Ustrlen(s) + 1); | |
469 | ||
470 | while (*s != 0) | |
471 | { | |
472 | if (*s != '\\') | |
473 | { | |
474 | *ss++ = *s++; | |
475 | } | |
476 | else if (isdigit(s[1])) | |
477 | { | |
478 | *ss++ = (s[1] - '0')*100 + (s[2] - '0')*10 + s[3] - '0'; | |
479 | s += 4; | |
480 | } | |
481 | else if (*(++s) != 0) | |
482 | { | |
483 | *ss++ = *s++; | |
484 | } | |
485 | } | |
486 | ||
487 | *ss = 0; | |
488 | return yield; | |
489 | } | |
490 | ||
491 | ||
492 | #ifndef COMPILE_UTILITY | |
493 | /************************************************* | |
494 | * Copy space-terminated or quoted string * | |
495 | *************************************************/ | |
496 | ||
497 | /* This function copies from a string until its end, or until whitespace is | |
498 | encountered, unless the string begins with a double quote, in which case the | |
499 | terminating quote is sought, and escaping within the string is done. The length | |
500 | of a de-quoted string can be no longer than the original, since escaping always | |
501 | turns n characters into 1 character. | |
502 | ||
503 | Argument: pointer to the pointer to the first character, which gets updated | |
504 | Returns: the new string | |
505 | */ | |
506 | ||
507 | uschar * | |
508 | string_dequote(uschar **sptr) | |
509 | { | |
510 | uschar *s = *sptr; | |
511 | uschar *t, *yield; | |
512 | ||
513 | /* First find the end of the string */ | |
514 | ||
515 | if (*s != '\"') | |
516 | { | |
517 | while (*s != 0 && !isspace(*s)) s++; | |
518 | } | |
519 | else | |
520 | { | |
521 | s++; | |
522 | while (*s != 0 && *s != '\"') | |
523 | { | |
524 | if (*s == '\\') (void)string_interpret_escape(&s); | |
525 | s++; | |
526 | } | |
527 | if (*s != 0) s++; | |
528 | } | |
529 | ||
530 | /* Get enough store to copy into */ | |
531 | ||
532 | t = yield = store_get(s - *sptr + 1); | |
533 | s = *sptr; | |
534 | ||
535 | /* Do the copy */ | |
536 | ||
537 | if (*s != '\"') | |
538 | { | |
539 | while (*s != 0 && !isspace(*s)) *t++ = *s++; | |
540 | } | |
541 | else | |
542 | { | |
543 | s++; | |
544 | while (*s != 0 && *s != '\"') | |
545 | { | |
546 | if (*s == '\\') *t++ = string_interpret_escape(&s); | |
547 | else *t++ = *s; | |
548 | s++; | |
549 | } | |
550 | if (*s != 0) s++; | |
551 | } | |
552 | ||
553 | /* Update the pointer and return the terminated copy */ | |
554 | ||
555 | *sptr = s; | |
556 | *t = 0; | |
557 | return yield; | |
558 | } | |
559 | #endif /* COMPILE_UTILITY */ | |
560 | ||
561 | ||
562 | ||
563 | /************************************************* | |
564 | * Format a string and save it * | |
565 | *************************************************/ | |
566 | ||
567 | /* The formatting is done by string_format, which checks the length of | |
568 | everything. | |
569 | ||
570 | Arguments: | |
571 | format a printf() format - deliberately char * rather than uschar * | |
572 | because it will most usually be a literal string | |
573 | ... arguments for format | |
574 | ||
575 | Returns: pointer to fresh piece of store containing sprintf'ed string | |
576 | */ | |
577 | ||
578 | uschar * | |
579 | string_sprintf(char *format, ...) | |
580 | { | |
581 | va_list ap; | |
582 | uschar buffer[STRING_SPRINTF_BUFFER_SIZE]; | |
583 | va_start(ap, format); | |
584 | if (!string_vformat(buffer, sizeof(buffer), format, ap)) | |
585 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
586 | "string_sprintf expansion was longer than %d", sizeof(buffer)); | |
587 | va_end(ap); | |
588 | return string_copy(buffer); | |
589 | } | |
590 | ||
591 | ||
592 | ||
593 | /************************************************* | |
594 | * Case-independent strncmp() function * | |
595 | *************************************************/ | |
596 | ||
597 | /* | |
598 | Arguments: | |
599 | s first string | |
600 | t second string | |
601 | n number of characters to compare | |
602 | ||
603 | Returns: < 0, = 0, or > 0, according to the comparison | |
604 | */ | |
605 | ||
606 | int | |
607 | strncmpic(uschar *s, uschar *t, int n) | |
608 | { | |
609 | while (n--) | |
610 | { | |
611 | int c = tolower(*s++) - tolower(*t++); | |
612 | if (c) return c; | |
613 | } | |
614 | return 0; | |
615 | } | |
616 | ||
617 | ||
618 | /************************************************* | |
619 | * Case-independent strcmp() function * | |
620 | *************************************************/ | |
621 | ||
622 | /* | |
623 | Arguments: | |
624 | s first string | |
625 | t second string | |
626 | ||
627 | Returns: < 0, = 0, or > 0, according to the comparison | |
628 | */ | |
629 | ||
630 | int | |
631 | strcmpic(uschar *s, uschar *t) | |
632 | { | |
633 | while (*s != 0) | |
634 | { | |
635 | int c = tolower(*s++) - tolower(*t++); | |
636 | if (c != 0) return c; | |
637 | } | |
638 | return *t; | |
639 | } | |
640 | ||
641 | ||
642 | /************************************************* | |
643 | * Case-independent strstr() function * | |
644 | *************************************************/ | |
645 | ||
646 | /* The third argument specifies whether whitespace is required | |
647 | to follow the matched string. | |
648 | ||
649 | Arguments: | |
650 | s string to search | |
651 | t substring to search for | |
652 | space_follows if TRUE, match only if whitespace follows | |
653 | ||
654 | Returns: pointer to substring in string, or NULL if not found | |
655 | */ | |
656 | ||
657 | uschar * | |
658 | strstric(uschar *s, uschar *t, BOOL space_follows) | |
659 | { | |
660 | uschar *p = t; | |
661 | uschar *yield = NULL; | |
662 | int cl = tolower(*p); | |
663 | int cu = toupper(*p); | |
664 | ||
665 | while (*s) | |
666 | { | |
667 | if (*s == cl || *s == cu) | |
668 | { | |
669 | if (yield == NULL) yield = s; | |
670 | if (*(++p) == 0) | |
671 | { | |
672 | if (!space_follows || s[1] == ' ' || s[1] == '\n' ) return yield; | |
673 | yield = NULL; | |
674 | p = t; | |
675 | } | |
676 | cl = tolower(*p); | |
677 | cu = toupper(*p); | |
678 | s++; | |
679 | } | |
680 | else if (yield != NULL) | |
681 | { | |
682 | yield = NULL; | |
683 | p = t; | |
684 | cl = tolower(*p); | |
685 | cu = toupper(*p); | |
686 | } | |
687 | else s++; | |
688 | } | |
689 | return NULL; | |
690 | } | |
691 | ||
692 | ||
693 | ||
694 | #ifndef COMPILE_UTILITY | |
695 | /************************************************* | |
696 | * Get next string from separated list * | |
697 | *************************************************/ | |
698 | ||
699 | /* Leading and trailing space is removed from each item. The separator in the | |
700 | list is controlled by the int pointed to by the separator argument as follows: | |
701 | ||
702 | If its value is > 0 it is used as the delimiter. | |
703 | (If its value is actually > UCHAR_MAX there is only one item in the list. | |
704 | This is used for some cases when called via functions that sometimes | |
705 | plough through lists, and sometimes are given single items.) | |
706 | If its value is <= 0, the string is inspected for a leading <x, where | |
707 | x is an ispunct() value. If found, it is used as the delimiter. If not | |
708 | found: (a) if separator == 0, ':' is used | |
709 | (b) if separator <0, then -separator is used | |
710 | In all cases the value of the separator that is used is written back to | |
711 | the int so that it is used on subsequent calls as we progress through | |
712 | the list. | |
713 | ||
714 | The separator can always be represented in the string by doubling. | |
715 | ||
716 | Arguments: | |
717 | listptr points to a pointer to the current start of the list; the | |
718 | pointer gets updated to point after the end of the next item | |
719 | separator a pointer to the separator character in an int (see above) | |
720 | buffer where to put a copy of the next string in the list; or | |
721 | NULL if the next string is returned in new memory | |
722 | buflen when buffer is not NULL, the size of buffer; otherwise ignored | |
723 | ||
724 | Returns: pointer to buffer, containing the next substring, | |
725 | or NULL if no more substrings | |
726 | */ | |
727 | ||
728 | uschar * | |
729 | string_nextinlist(uschar **listptr, int *separator, uschar *buffer, int buflen) | |
730 | { | |
731 | register int p = 0; | |
732 | register int sep = *separator; | |
733 | register uschar *s = *listptr; | |
734 | ||
735 | if (s == NULL) return NULL; | |
736 | while (isspace(*s)) s++; | |
737 | ||
738 | if (sep <= 0) | |
739 | { | |
740 | if (*s == '<' && ispunct(s[1])) | |
741 | { | |
742 | sep = s[1]; | |
743 | s += 2; | |
744 | while (isspace(*s)) s++; | |
745 | } | |
746 | else | |
747 | { | |
748 | sep = (sep == 0)? ':' : -sep; | |
749 | } | |
750 | *separator = sep; | |
751 | } | |
752 | ||
753 | if (*s == 0) return NULL; | |
754 | ||
755 | /* Handle the case when a buffer is provided. */ | |
756 | ||
757 | if (buffer != NULL) | |
758 | { | |
759 | for (; *s != 0; s++) | |
760 | { | |
761 | if (*s == sep && *(++s) != sep) break; | |
762 | if (p < buflen - 1) buffer[p++] = *s; | |
763 | } | |
764 | while (p > 0 && isspace(buffer[p-1])) p--; | |
765 | buffer[p] = 0; | |
766 | } | |
767 | ||
768 | /* Handle the case when a buffer is not provided. */ | |
769 | ||
770 | else | |
771 | { | |
772 | /* We know that *s != 0 at this point. However, it might be pointing to a | |
773 | separator, which could indicate an empty string, or could be doubled to | |
774 | indicate a separator character as data at the start of a string. */ | |
775 | ||
776 | if (*s == sep) | |
777 | { | |
778 | s++; | |
779 | if (*s != sep) buffer = string_copy(US""); | |
780 | } | |
781 | ||
782 | if (buffer == NULL) | |
783 | { | |
784 | int size = 0; | |
785 | int ptr = 0; | |
786 | uschar *ss; | |
787 | for (;;) | |
788 | { | |
789 | for (ss = s + 1; *ss != 0 && *ss != sep; ss++); | |
790 | buffer = string_cat(buffer, &size, &ptr, s, ss-s); | |
791 | s = ss; | |
792 | if (*s == 0 || *(++s) != sep) break; | |
793 | } | |
794 | while (ptr > 0 && isspace(buffer[ptr-1])) ptr--; | |
795 | buffer[ptr] = 0; | |
796 | } | |
797 | } | |
798 | ||
799 | /* Update the current pointer and return the new string */ | |
800 | ||
801 | *listptr = s; | |
802 | return buffer; | |
803 | } | |
804 | #endif /* COMPILE_UTILITY */ | |
805 | ||
806 | ||
807 | ||
808 | #ifndef COMPILE_UTILITY | |
809 | /************************************************* | |
810 | * Add chars to string * | |
811 | *************************************************/ | |
812 | ||
813 | /* This function is used when building up strings of unknown length. Room is | |
814 | always left for a terminating zero to be added to the string that is being | |
815 | built. This function does not require the string that is being added to be NUL | |
816 | terminated, because the number of characters to add is given explicitly. It is | |
817 | sometimes called to extract parts of other strings. | |
818 | ||
819 | Arguments: | |
820 | string points to the start of the string that is being built, or NULL | |
821 | if this is a new string that has no contents yet | |
822 | size points to a variable that holds the current capacity of the memory | |
823 | block (updated if changed) | |
824 | ptr points to a variable that holds the offset at which to add | |
825 | characters, updated to the new offset | |
826 | s points to characters to add | |
827 | count count of characters to add; must not exceed the length of s, if s | |
828 | is a C string | |
829 | ||
830 | If string is given as NULL, *size and *ptr should both be zero. | |
831 | ||
832 | Returns: pointer to the start of the string, changed if copied for expansion. | |
833 | Note that a NUL is not added, though space is left for one. This is | |
834 | because string_cat() is often called multiple times to build up a | |
835 | string - there's no point adding the NUL till the end. | |
836 | */ | |
837 | ||
838 | uschar * | |
839 | string_cat(uschar *string, int *size, int *ptr, const uschar *s, int count) | |
840 | { | |
841 | int p = *ptr; | |
842 | ||
843 | if (p + count >= *size) | |
844 | { | |
845 | int oldsize = *size; | |
846 | ||
847 | /* Mostly, string_cat() is used to build small strings of a few hundred | |
848 | characters at most. There are times, however, when the strings are very much | |
849 | longer (for example, a lookup that returns a vast number of alias addresses). | |
850 | To try to keep things reasonable, we use increments whose size depends on the | |
851 | existing length of the string. */ | |
852 | ||
853 | int inc = (oldsize < 4096)? 100 : 1024; | |
854 | while (*size <= p + count) *size += inc; | |
855 | ||
856 | /* New string */ | |
857 | ||
858 | if (string == NULL) string = store_get(*size); | |
859 | ||
860 | /* Try to extend an existing allocation. If the result of calling | |
861 | store_extend() is false, either there isn't room in the current memory block, | |
862 | or this string is not the top item on the dynamic store stack. We then have | |
863 | to get a new chunk of store and copy the old string. When building large | |
864 | strings, it is helpful to call store_release() on the old string, to release | |
865 | memory blocks that have become empty. (The block will be freed if the string | |
866 | is at its start.) However, we can do this only if we know that the old string | |
867 | was the last item on the dynamic memory stack. This is the case if it matches | |
868 | store_last_get. */ | |
869 | ||
870 | else if (!store_extend(string, oldsize, *size)) | |
871 | { | |
872 | BOOL release_ok = store_last_get[store_pool] == string; | |
873 | uschar *newstring = store_get(*size); | |
874 | memcpy(newstring, string, p); | |
875 | if (release_ok) store_release(string); | |
876 | string = newstring; | |
877 | } | |
878 | } | |
879 | ||
880 | /* Because we always specify the exact number of characters to copy, we can | |
881 | use memcpy(), which is likely to be more efficient than strncopy() because the | |
882 | latter has to check for zero bytes. */ | |
883 | ||
884 | memcpy(string + p, s, count); | |
885 | *ptr = p + count; | |
886 | return string; | |
887 | } | |
888 | #endif /* COMPILE_UTILITY */ | |
889 | ||
890 | ||
891 | ||
892 | #ifndef COMPILE_UTILITY | |
893 | /************************************************* | |
894 | * Append strings to another string * | |
895 | *************************************************/ | |
896 | ||
897 | /* This function can be used to build a string from many other strings. | |
898 | It calls string_cat() to do the dirty work. | |
899 | ||
900 | Arguments: | |
901 | string points to the start of the string that is being built, or NULL | |
902 | if this is a new string that has no contents yet | |
903 | size points to a variable that holds the current capacity of the memory | |
904 | block (updated if changed) | |
905 | ptr points to a variable that holds the offset at which to add | |
906 | characters, updated to the new offset | |
907 | count the number of strings to append | |
908 | ... "count" uschar* arguments, which must be valid zero-terminated | |
909 | C strings | |
910 | ||
911 | Returns: pointer to the start of the string, changed if copied for expansion. | |
912 | The string is not zero-terminated - see string_cat() above. | |
913 | */ | |
914 | ||
915 | uschar * | |
916 | string_append(uschar *string, int *size, int *ptr, int count, ...) | |
917 | { | |
918 | va_list ap; | |
919 | int i; | |
920 | ||
921 | va_start(ap, count); | |
922 | for (i = 0; i < count; i++) | |
923 | { | |
924 | uschar *t = va_arg(ap, uschar *); | |
925 | string = string_cat(string, size, ptr, t, Ustrlen(t)); | |
926 | } | |
927 | va_end(ap); | |
928 | ||
929 | return string; | |
930 | } | |
931 | #endif | |
932 | ||
933 | ||
934 | ||
935 | /************************************************* | |
936 | * Format a string with length checks * | |
937 | *************************************************/ | |
938 | ||
939 | /* This function is used to format a string with checking of the length of the | |
940 | output for all conversions. It protects Exim from absent-mindedness when | |
941 | calling functions like debug_printf and string_sprintf, and elsewhere. There | |
942 | are two different entry points to what is actually the same function, depending | |
943 | on whether the variable length list of data arguments are given explicitly or | |
944 | as a va_list item. | |
945 | ||
946 | The formats are the usual printf() ones, with some omissions (never used) and | |
947 | two additions for strings: %S forces lower case, %#s or %#S prints nothing for | |
948 | a NULL string. Without the # "NULL" is printed (useful in debugging). There is | |
949 | also the addition of %D, which inserts the date in the form used for | |
950 | datestamped log files. | |
951 | ||
952 | Arguments: | |
953 | buffer a buffer in which to put the formatted string | |
954 | buflen the length of the buffer | |
955 | format the format string - deliberately char * and not uschar * | |
956 | ... or ap variable list of supplementary arguments | |
957 | ||
958 | Returns: TRUE if the result fitted in the buffer | |
959 | */ | |
960 | ||
961 | BOOL | |
962 | string_format(uschar *buffer, int buflen, char *format, ...) | |
963 | { | |
964 | BOOL yield; | |
965 | va_list ap; | |
966 | va_start(ap, format); | |
967 | yield = string_vformat(buffer, buflen, format, ap); | |
968 | va_end(ap); | |
969 | return yield; | |
970 | } | |
971 | ||
972 | ||
973 | BOOL | |
974 | string_vformat(uschar *buffer, int buflen, char *format, va_list ap) | |
975 | { | |
976 | BOOL yield = TRUE; | |
977 | int width, precision; | |
978 | char *fp = format; /* Deliberately not unsigned */ | |
979 | uschar *p = buffer; | |
980 | uschar *last = buffer + buflen - 1; | |
981 | ||
982 | string_datestamp_offset = -1; /* Datestamp not inserted */ | |
983 | ||
984 | /* Scan the format and handle the insertions */ | |
985 | ||
986 | while (*fp != 0) | |
987 | { | |
988 | int *nptr; | |
989 | int slen; | |
990 | char *null = "NULL"; /* ) These variables */ | |
991 | char *item_start, *s; /* ) are deliberately */ | |
992 | char newformat[16]; /* ) not unsigned */ | |
993 | ||
994 | /* Non-% characters just get copied verbatim */ | |
995 | ||
996 | if (*fp != '%') | |
997 | { | |
998 | if (p >= last) { yield = FALSE; break; } | |
999 | *p++ = (uschar)*fp++; | |
1000 | continue; | |
1001 | } | |
1002 | ||
1003 | /* Deal with % characters. Pick off the width and precision, for checking | |
1004 | strings, skipping over the flag and modifier characters. */ | |
1005 | ||
1006 | item_start = fp; | |
1007 | width = precision = -1; | |
1008 | ||
1009 | if (strchr("-+ #0", *(++fp)) != NULL) | |
1010 | { | |
1011 | if (*fp == '#') null = ""; | |
1012 | fp++; | |
1013 | } | |
1014 | ||
1015 | if (isdigit((uschar)*fp)) | |
1016 | { | |
1017 | width = *fp++ - '0'; | |
1018 | while (isdigit((uschar)*fp)) width = width * 10 + *fp++ - '0'; | |
1019 | } | |
1020 | else if (*fp == '*') | |
1021 | { | |
1022 | width = va_arg(ap, int); | |
1023 | fp++; | |
1024 | } | |
1025 | ||
1026 | if (*fp == '.') | |
1027 | { | |
1028 | if (*(++fp) == '*') | |
1029 | { | |
1030 | precision = va_arg(ap, int); | |
1031 | fp++; | |
1032 | } | |
1033 | else | |
1034 | { | |
1035 | precision = 0; | |
1036 | while (isdigit((uschar)*fp)) | |
1037 | precision = precision*10 + *fp++ - '0'; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | if (strchr("hlL", *fp) != NULL) fp++; | |
1042 | ||
1043 | /* Handle each specific format type. */ | |
1044 | ||
1045 | switch (*fp++) | |
1046 | { | |
1047 | case 'n': | |
1048 | nptr = va_arg(ap, int *); | |
1049 | *nptr = p - buffer; | |
1050 | break; | |
1051 | ||
1052 | case 'd': | |
1053 | case 'o': | |
1054 | case 'u': | |
1055 | case 'x': | |
1056 | case 'X': | |
1057 | if (p >= last - 12) { yield = FALSE; goto END_FORMAT; } | |
1058 | strncpy(newformat, item_start, fp - item_start); | |
1059 | newformat[fp - item_start] = 0; | |
1060 | sprintf(CS p, newformat, va_arg(ap, int)); | |
1061 | while (*p) p++; | |
1062 | break; | |
1063 | ||
1064 | case 'p': | |
1065 | if (p >= last - 24) { yield = FALSE; goto END_FORMAT; } | |
1066 | strncpy(newformat, item_start, fp - item_start); | |
1067 | newformat[fp - item_start] = 0; | |
1068 | sprintf(CS p, newformat, va_arg(ap, void *)); | |
1069 | while (*p) p++; | |
1070 | break; | |
1071 | ||
1072 | /* %f format is inherently insecure if the numbers that it may be | |
1073 | handed are unknown (e.g. 1e300). However, in Exim, the only use of %f | |
1074 | is for printing load averages, and these are actually stored as integers | |
1075 | (load average * 1000) so the size of the numbers is constrained. */ | |
1076 | ||
1077 | case 'f': | |
1078 | case 'e': | |
1079 | case 'E': | |
1080 | case 'g': | |
1081 | case 'G': | |
1082 | if (precision < 0) precision = 6; | |
1083 | if (p >= last - precision - 8) { yield = FALSE; goto END_FORMAT; } | |
1084 | strncpy(newformat, item_start, fp - item_start); | |
1085 | newformat[fp-item_start] = 0; | |
1086 | sprintf(CS p, newformat, va_arg(ap, double)); | |
1087 | while (*p) p++; | |
1088 | break; | |
1089 | ||
1090 | /* String types */ | |
1091 | ||
1092 | case '%': | |
1093 | if (p >= last) { yield = FALSE; goto END_FORMAT; } | |
1094 | *p++ = '%'; | |
1095 | break; | |
1096 | ||
1097 | case 'c': | |
1098 | if (p >= last) { yield = FALSE; goto END_FORMAT; } | |
1099 | *p++ = va_arg(ap, int); | |
1100 | break; | |
1101 | ||
1102 | case 'D': /* Insert datestamp for log file names */ | |
1103 | s = CS tod_stamp(tod_log_datestamp); | |
1104 | string_datestamp_offset = p - buffer; /* Passed back via global */ | |
1105 | goto INSERT_STRING; | |
1106 | ||
1107 | case 's': | |
1108 | case 'S': /* Forces *lower* case */ | |
1109 | s = va_arg(ap, char *); | |
1110 | ||
1111 | INSERT_STRING: /* Come to from %D above */ | |
1112 | if (s == NULL) s = null; | |
1113 | slen = Ustrlen(s); | |
1114 | ||
1115 | /* If the width is specified, check that there is a precision | |
1116 | set; if not, set it to the width to prevent overruns of long | |
1117 | strings. */ | |
1118 | ||
1119 | if (width >= 0) | |
1120 | { | |
1121 | if (precision < 0) precision = width; | |
1122 | } | |
1123 | ||
1124 | /* If a width is not specified and the precision is specified, set | |
1125 | the width to the precision, or the string length if shorted. */ | |
1126 | ||
1127 | else if (precision >= 0) | |
1128 | { | |
1129 | width = (precision < slen)? precision : slen; | |
1130 | } | |
1131 | ||
1132 | /* If neither are specified, set them both to the string length. */ | |
1133 | ||
1134 | else width = precision = slen; | |
1135 | ||
1136 | /* Check string space, and add the string to the buffer if ok. If | |
1137 | not OK, add part of the string (debugging uses this to show as | |
1138 | much as possible). */ | |
1139 | ||
1140 | if (p >= last - width) | |
1141 | { | |
1142 | yield = FALSE; | |
1143 | width = precision = last - p - 1; | |
1144 | } | |
1145 | sprintf(CS p, "%*.*s", width, precision, s); | |
1146 | if (fp[-1] == 'S') | |
1147 | while (*p) { *p = tolower(*p); p++; } | |
1148 | else | |
1149 | while (*p) p++; | |
1150 | if (!yield) goto END_FORMAT; | |
1151 | break; | |
1152 | ||
1153 | /* Some things are never used in Exim; also catches junk. */ | |
1154 | ||
1155 | default: | |
1156 | strncpy(newformat, item_start, fp - item_start); | |
1157 | newformat[fp-item_start] = 0; | |
1158 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "string_format: unsupported type " | |
1159 | "in \"%s\" in \"%s\"", newformat, format); | |
1160 | break; | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | /* Ensure string is complete; return TRUE if got to the end of the format */ | |
1165 | ||
1166 | END_FORMAT: | |
1167 | ||
1168 | *p = 0; | |
1169 | return yield; | |
1170 | } | |
1171 | ||
1172 | ||
1173 | ||
1174 | #ifndef COMPILE_UTILITY | |
1175 | /************************************************* | |
1176 | * Generate an "open failed" message * | |
1177 | *************************************************/ | |
1178 | ||
1179 | /* This function creates a message after failure to open a file. It includes a | |
1180 | string supplied as data, adds the strerror() text, and if the failure was | |
1181 | "Permission denied", reads and includes the euid and egid. | |
1182 | ||
1183 | Arguments: | |
1184 | eno the value of errno after the failure | |
1185 | format a text format string - deliberately not uschar * | |
1186 | ... arguments for the format string | |
1187 | ||
1188 | Returns: a message, in dynamic store | |
1189 | */ | |
1190 | ||
1191 | uschar * | |
1192 | string_open_failed(int eno, char *format, ...) | |
1193 | { | |
1194 | va_list ap; | |
1195 | uschar buffer[1024]; | |
1196 | ||
1197 | Ustrcpy(buffer, "failed to open "); | |
1198 | va_start(ap, format); | |
1199 | ||
1200 | /* Use the checked formatting routine to ensure that the buffer | |
1201 | does not overflow. It should not, since this is called only for internally | |
1202 | specified messages. If it does, the message just gets truncated, and there | |
1203 | doesn't seem much we can do about that. */ | |
1204 | ||
1205 | (void)string_vformat(buffer+15, sizeof(buffer) - 15, format, ap); | |
1206 | ||
1207 | return (eno == EACCES)? | |
1208 | string_sprintf("%s: %s (euid=%ld egid=%ld)", buffer, strerror(eno), | |
1209 | (long int)geteuid(), (long int)getegid()) : | |
1210 | string_sprintf("%s: %s", buffer, strerror(eno)); | |
1211 | } | |
1212 | #endif /* COMPILE_UTILITY */ | |
1213 | ||
1214 | ||
1215 | ||
1216 | #ifndef COMPILE_UTILITY | |
1217 | /************************************************* | |
1218 | * Generate local prt for logging * | |
1219 | *************************************************/ | |
1220 | ||
1221 | /* This function is a subroutine for use in string_log_address() below. | |
1222 | ||
1223 | Arguments: | |
1224 | addr the address being logged | |
1225 | yield the current dynamic buffer pointer | |
1226 | sizeptr points to current size | |
1227 | ptrptr points to current insert pointer | |
1228 | ||
1229 | Returns: the new value of the buffer pointer | |
1230 | */ | |
1231 | ||
1232 | static uschar * | |
1233 | string_get_localpart(address_item *addr, uschar *yield, int *sizeptr, | |
1234 | int *ptrptr) | |
1235 | { | |
1236 | if (testflag(addr, af_include_affixes) && addr->prefix != NULL) | |
1237 | yield = string_cat(yield, sizeptr, ptrptr, addr->prefix, | |
1238 | Ustrlen(addr->prefix)); | |
1239 | yield = string_cat(yield, sizeptr, ptrptr, addr->local_part, | |
1240 | Ustrlen(addr->local_part)); | |
1241 | if (testflag(addr, af_include_affixes) && addr->suffix != NULL) | |
1242 | yield = string_cat(yield, sizeptr, ptrptr, addr->suffix, | |
1243 | Ustrlen(addr->suffix)); | |
1244 | return yield; | |
1245 | } | |
1246 | ||
1247 | ||
1248 | /************************************************* | |
1249 | * Generate log address list * | |
1250 | *************************************************/ | |
1251 | ||
1252 | /* This function generates a list consisting of an address and its parents, for | |
1253 | use in logging lines. For saved onetime aliased addresses, the onetime parent | |
1254 | field is used. If the address was delivered by a transport with rcpt_include_ | |
1255 | affixes set, the af_include_affixes bit will be set in the address. In that | |
1256 | case, we include the affixes here too. | |
1257 | ||
1258 | Arguments: | |
1259 | addr bottom (ultimate) address | |
1260 | all_parents if TRUE, include all parents | |
1261 | success TRUE for successful delivery | |
1262 | ||
1263 | Returns: a string in dynamic store | |
1264 | */ | |
1265 | ||
1266 | uschar * | |
1267 | string_log_address(address_item *addr, BOOL all_parents, BOOL success) | |
1268 | { | |
1269 | int size = 64; | |
1270 | int ptr = 0; | |
1271 | BOOL add_topaddr = TRUE; | |
1272 | uschar *yield = store_get(size); | |
1273 | address_item *topaddr; | |
1274 | ||
1275 | /* Find the ultimate parent */ | |
1276 | ||
1277 | for (topaddr = addr; topaddr->parent != NULL; topaddr = topaddr->parent); | |
1278 | ||
1279 | /* We start with just the local part for pipe, file, and reply deliveries, and | |
1280 | for successful local deliveries from routers that have the log_as_local flag | |
1281 | set. File deliveries from filters can be specified as non-absolute paths in | |
1282 | cases where the transport is goin to complete the path. If there is an error | |
1283 | before this happens (expansion failure) the local part will not be updated, and | |
1284 | so won't necessarily look like a path. Add extra text for this case. */ | |
1285 | ||
1286 | if (testflag(addr, af_pfr) || | |
1287 | (success && | |
1288 | addr->router != NULL && addr->router->log_as_local && | |
1289 | addr->transport != NULL && addr->transport->info->local)) | |
1290 | { | |
1291 | if (testflag(addr, af_file) && addr->local_part[0] != '/') | |
1292 | yield = string_cat(yield, &size, &ptr, CUS"save ", 5); | |
1293 | yield = string_get_localpart(addr, yield, &size, &ptr); | |
1294 | } | |
1295 | ||
1296 | /* Other deliveries start with the full address. It we have split it into local | |
1297 | part and domain, use those fields. Some early failures can happen before the | |
1298 | splitting is done; in those cases use the original field. */ | |
1299 | ||
1300 | else | |
1301 | { | |
1302 | if (addr->local_part != NULL) | |
1303 | { | |
1304 | yield = string_get_localpart(addr, yield, &size, &ptr); | |
1305 | yield = string_cat(yield, &size, &ptr, US"@", 1); | |
1306 | yield = string_cat(yield, &size, &ptr, addr->domain, | |
1307 | Ustrlen(addr->domain) ); | |
1308 | } | |
1309 | else | |
1310 | { | |
1311 | yield = string_cat(yield, &size, &ptr, addr->address, Ustrlen(addr->address)); | |
1312 | } | |
1313 | yield[ptr] = 0; | |
1314 | ||
1315 | /* If the address we are going to print is the same as the top address, | |
1316 | and all parents are not being included, don't add on the top address. First | |
1317 | of all, do a caseless comparison; if this succeeds, do a caseful comparison | |
1318 | on the local parts. */ | |
1319 | ||
1320 | if (strcmpic(yield, topaddr->address) == 0 && | |
1321 | Ustrncmp(yield, topaddr->address, Ustrchr(yield, '@') - yield) == 0 && | |
1322 | addr->onetime_parent == NULL && | |
1323 | (!all_parents || addr->parent == NULL || addr->parent == topaddr)) | |
1324 | add_topaddr = FALSE; | |
1325 | } | |
1326 | ||
1327 | /* If all parents are requested, or this is a local pipe/file/reply, and | |
1328 | there is at least one intermediate parent, show it in brackets, and continue | |
1329 | with all of them if all are wanted. */ | |
1330 | ||
1331 | if ((all_parents || testflag(addr, af_pfr)) && | |
1332 | addr->parent != NULL && | |
1333 | addr->parent != topaddr) | |
1334 | { | |
1335 | uschar *s = US" ("; | |
1336 | address_item *addr2; | |
1337 | for (addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent) | |
1338 | { | |
1339 | yield = string_cat(yield, &size, &ptr, s, 2); | |
1340 | yield = string_cat(yield, &size, &ptr, addr2->address, Ustrlen(addr2->address)); | |
1341 | if (!all_parents) break; | |
1342 | s = US", "; | |
1343 | } | |
1344 | yield = string_cat(yield, &size, &ptr, US")", 1); | |
1345 | } | |
1346 | ||
1347 | /* Add the top address if it is required */ | |
1348 | ||
1349 | if (add_topaddr) | |
1350 | { | |
1351 | yield = string_cat(yield, &size, &ptr, US" <", 2); | |
1352 | ||
1353 | if (addr->onetime_parent == NULL) | |
1354 | yield = string_cat(yield, &size, &ptr, topaddr->address, | |
1355 | Ustrlen(topaddr->address)); | |
1356 | else | |
1357 | yield = string_cat(yield, &size, &ptr, addr->onetime_parent, | |
1358 | Ustrlen(addr->onetime_parent)); | |
1359 | ||
1360 | yield = string_cat(yield, &size, &ptr, US">", 1); | |
1361 | } | |
1362 | ||
1363 | yield[ptr] = 0; /* string_cat() leaves space */ | |
1364 | return yield; | |
1365 | } | |
1366 | #endif /* COMPILE_UTILITY */ | |
1367 | ||
1368 | ||
1369 | ||
1370 | ||
1371 | ||
1372 | /************************************************* | |
1373 | ************************************************** | |
1374 | * Stand-alone test program * | |
1375 | ************************************************** | |
1376 | *************************************************/ | |
1377 | ||
1378 | #ifdef STAND_ALONE | |
1379 | int main(void) | |
1380 | { | |
1381 | uschar buffer[256]; | |
1382 | ||
1383 | printf("Testing is_ip_address\n"); | |
1384 | ||
1385 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1386 | { | |
1387 | int offset; | |
1388 | buffer[Ustrlen(buffer) - 1] = 0; | |
1389 | printf("%d\n", string_is_ip_address(buffer, NULL)); | |
1390 | printf("%d %d %s\n", string_is_ip_address(buffer, &offset), offset, buffer); | |
1391 | } | |
1392 | ||
1393 | printf("Testing string_nextinlist\n"); | |
1394 | ||
1395 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1396 | { | |
1397 | uschar *list = buffer; | |
1398 | uschar *lp1, *lp2; | |
1399 | uschar item[256]; | |
1400 | int sep1 = 0; | |
1401 | int sep2 = 0; | |
1402 | ||
1403 | if (*list == '<') | |
1404 | { | |
1405 | sep1 = sep2 = list[1]; | |
1406 | list += 2; | |
1407 | } | |
1408 | ||
1409 | lp1 = lp2 = list; | |
1410 | for (;;) | |
1411 | { | |
1412 | uschar *item1 = string_nextinlist(&lp1, &sep1, item, sizeof(item)); | |
1413 | uschar *item2 = string_nextinlist(&lp2, &sep2, NULL, 0); | |
1414 | ||
1415 | if (item1 == NULL && item2 == NULL) break; | |
1416 | if (item == NULL || item2 == NULL || Ustrcmp(item1, item2) != 0) | |
1417 | { | |
1418 | printf("***ERROR\nitem1=\"%s\"\nitem2=\"%s\"\n", | |
1419 | (item1 == NULL)? "NULL" : CS item1, | |
1420 | (item2 == NULL)? "NULL" : CS item2); | |
1421 | break; | |
1422 | } | |
1423 | else printf(" \"%s\"\n", CS item1); | |
1424 | } | |
1425 | } | |
1426 | ||
1427 | /* This is a horrible lash-up, but it serves its purpose. */ | |
1428 | ||
1429 | printf("Testing string_format\n"); | |
1430 | ||
1431 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1432 | { | |
1433 | void *args[3]; | |
1434 | double dargs[3]; | |
1435 | int dflag = 0; | |
1436 | int n = 0; | |
1437 | int count; | |
1438 | int countset = 0; | |
1439 | uschar format[256]; | |
1440 | uschar outbuf[256]; | |
1441 | uschar *s; | |
1442 | buffer[Ustrlen(buffer) - 1] = 0; | |
1443 | ||
1444 | s = Ustrchr(buffer, ','); | |
1445 | if (s == NULL) s = buffer + Ustrlen(buffer); | |
1446 | ||
1447 | Ustrncpy(format, buffer, s - buffer); | |
1448 | format[s-buffer] = 0; | |
1449 | ||
1450 | if (*s == ',') s++; | |
1451 | ||
1452 | while (*s != 0) | |
1453 | { | |
1454 | uschar *ss = s; | |
1455 | s = Ustrchr(ss, ','); | |
1456 | if (s == NULL) s = ss + Ustrlen(ss); | |
1457 | ||
1458 | if (isdigit(*ss)) | |
1459 | { | |
1460 | Ustrncpy(outbuf, ss, s-ss); | |
1461 | if (Ustrchr(outbuf, '.') != NULL) | |
1462 | { | |
1463 | dflag = 1; | |
1464 | dargs[n++] = Ustrtod(outbuf, NULL); | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | args[n++] = (void *)Uatoi(outbuf); | |
1469 | } | |
1470 | } | |
1471 | ||
1472 | else if (Ustrcmp(ss, "*") == 0) | |
1473 | { | |
1474 | args[n++] = (void *)(&count); | |
1475 | countset = 1; | |
1476 | } | |
1477 | ||
1478 | else | |
1479 | { | |
1480 | uschar *sss = malloc(s - ss + 1); | |
1481 | Ustrncpy(sss, ss, s-ss); | |
1482 | args[n++] = sss; | |
1483 | } | |
1484 | ||
1485 | if (*s == ',') s++; | |
1486 | } | |
1487 | ||
1488 | if (!dflag) printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1489 | args[0], args[1], args[2])? "True" : "False"); | |
1490 | ||
1491 | else printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1492 | dargs[0], dargs[1], dargs[2])? "True" : "False"); | |
1493 | ||
1494 | printf("%s\n", CS outbuf); | |
1495 | if (countset) printf("count=%d\n", count); | |
1496 | } | |
1497 | ||
1498 | return 0; | |
1499 | } | |
1500 | #endif | |
1501 | ||
1502 | /* End of string.c */ |