Commit | Line | Data |
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059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
f9ba5e22 | 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
059ec3d9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | /* Miscellaneous string-handling functions. Some are not required for | |
9 | utilities and tests, and are cut out by the COMPILE_UTILITY macro. */ | |
10 | ||
11 | ||
12 | #include "exim.h" | |
d12746bc | 13 | #include <assert.h> |
059ec3d9 PH |
14 | |
15 | ||
16 | #ifndef COMPILE_UTILITY | |
17 | /************************************************* | |
18 | * Test for IP address * | |
19 | *************************************************/ | |
20 | ||
21 | /* This used just to be a regular expression, but with IPv6 things are a bit | |
22 | more complicated. If the address contains a colon, it is assumed to be a v6 | |
23 | address (assuming HAVE_IPV6 is set). If a mask is permitted and one is present, | |
24 | and maskptr is not NULL, its offset is placed there. | |
25 | ||
26 | Arguments: | |
27 | s a string | |
28 | maskptr NULL if no mask is permitted to follow | |
29 | otherwise, points to an int where the offset of '/' is placed | |
1688f43b | 30 | if there is no / followed by trailing digits, *maskptr is set 0 |
059ec3d9 PH |
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 | |
b1f8e4f8 | 38 | string_is_ip_address(const uschar *s, int *maskptr) |
059ec3d9 | 39 | { |
059ec3d9 PH |
40 | int yield = 4; |
41 | ||
42 | /* If an optional mask is permitted, check for it. If found, pass back the | |
43 | offset. */ | |
44 | ||
8d909960 | 45 | if (maskptr) |
059ec3d9 | 46 | { |
b1f8e4f8 | 47 | const uschar *ss = s + Ustrlen(s); |
059ec3d9 PH |
48 | *maskptr = 0; |
49 | if (s != ss && isdigit(*(--ss))) | |
50 | { | |
51 | while (ss > s && isdigit(ss[-1])) ss--; | |
52 | if (ss > s && *(--ss) == '/') *maskptr = ss - s; | |
53 | } | |
54 | } | |
55 | ||
56 | /* A colon anywhere in the string => IPv6 address */ | |
57 | ||
58 | if (Ustrchr(s, ':') != NULL) | |
59 | { | |
60 | BOOL had_double_colon = FALSE; | |
61 | BOOL v4end = FALSE; | |
059ec3d9 PH |
62 | |
63 | yield = 6; | |
64 | ||
65 | /* An IPv6 address must start with hex digit or double colon. A single | |
66 | colon is invalid. */ | |
67 | ||
68 | if (*s == ':' && *(++s) != ':') return 0; | |
69 | ||
70 | /* Now read up to 8 components consisting of up to 4 hex digits each. There | |
71 | may be one and only one appearance of double colon, which implies any number | |
72 | of binary zero bits. The number of preceding components is held in count. */ | |
73 | ||
d7978c0f | 74 | for (int count = 0; count < 8; count++) |
059ec3d9 PH |
75 | { |
76 | /* If the end of the string is reached before reading 8 components, the | |
77 | address is valid provided a double colon has been read. This also applies | |
78 | if we hit the / that introduces a mask or the % that introduces the | |
79 | interface specifier (scope id) of a link-local address. */ | |
80 | ||
8d909960 | 81 | if (*s == 0 || *s == '%' || *s == '/') return had_double_colon ? yield : 0; |
059ec3d9 PH |
82 | |
83 | /* If a component starts with an additional colon, we have hit a double | |
84 | colon. This is permitted to appear once only, and counts as at least | |
85 | one component. The final component may be of this form. */ | |
86 | ||
87 | if (*s == ':') | |
88 | { | |
89 | if (had_double_colon) return 0; | |
90 | had_double_colon = TRUE; | |
91 | s++; | |
92 | continue; | |
93 | } | |
94 | ||
95 | /* If the remainder of the string contains a dot but no colons, we | |
96 | can expect a trailing IPv4 address. This is valid if either there has | |
97 | been no double-colon and this is the 7th component (with the IPv4 address | |
98 | being the 7th & 8th components), OR if there has been a double-colon | |
99 | and fewer than 6 components. */ | |
100 | ||
101 | if (Ustrchr(s, ':') == NULL && Ustrchr(s, '.') != NULL) | |
102 | { | |
103 | if ((!had_double_colon && count != 6) || | |
104 | (had_double_colon && count > 6)) return 0; | |
105 | v4end = TRUE; | |
106 | yield = 6; | |
107 | break; | |
108 | } | |
109 | ||
110 | /* Check for at least one and not more than 4 hex digits for this | |
111 | component. */ | |
112 | ||
113 | if (!isxdigit(*s++)) return 0; | |
114 | if (isxdigit(*s) && isxdigit(*(++s)) && isxdigit(*(++s))) s++; | |
115 | ||
116 | /* If the component is terminated by colon and there is more to | |
117 | follow, skip over the colon. If there is no more to follow the address is | |
118 | invalid. */ | |
119 | ||
120 | if (*s == ':' && *(++s) == 0) return 0; | |
121 | } | |
122 | ||
123 | /* If about to handle a trailing IPv4 address, drop through. Otherwise | |
124 | all is well if we are at the end of the string or at the mask or at a percent | |
125 | sign, which introduces the interface specifier (scope id) of a link local | |
126 | address. */ | |
127 | ||
1688f43b PH |
128 | if (!v4end) |
129 | return (*s == 0 || *s == '%' || | |
130 | (*s == '/' && maskptr != NULL && *maskptr != 0))? yield : 0; | |
059ec3d9 PH |
131 | } |
132 | ||
133 | /* Test for IPv4 address, which may be the tail-end of an IPv6 address. */ | |
134 | ||
d7978c0f | 135 | for (int i = 0; i < 4; i++) |
059ec3d9 | 136 | { |
8d909960 JH |
137 | long n; |
138 | uschar * end; | |
139 | ||
059ec3d9 | 140 | if (i != 0 && *s++ != '.') return 0; |
8d909960 JH |
141 | n = strtol(CCS s, CSS &end, 10); |
142 | if (n > 255 || n < 0 || end <= s || end > s+3) return 0; | |
143 | s = end; | |
059ec3d9 PH |
144 | } |
145 | ||
8d909960 | 146 | return !*s || (*s == '/' && maskptr && *maskptr != 0) ? yield : 0; |
059ec3d9 PH |
147 | } |
148 | #endif /* COMPILE_UTILITY */ | |
149 | ||
150 | ||
151 | /************************************************* | |
152 | * Format message size * | |
153 | *************************************************/ | |
154 | ||
155 | /* Convert a message size in bytes to printing form, rounding | |
156 | according to the magnitude of the number. A value of zero causes | |
157 | a string of spaces to be returned. | |
158 | ||
159 | Arguments: | |
160 | size the message size in bytes | |
161 | buffer where to put the answer | |
162 | ||
163 | Returns: pointer to the buffer | |
164 | a string of exactly 5 characters is normally returned | |
165 | */ | |
166 | ||
167 | uschar * | |
168 | string_format_size(int size, uschar *buffer) | |
169 | { | |
45500060 | 170 | if (size == 0) Ustrcpy(buffer, " "); |
059ec3d9 PH |
171 | else if (size < 1024) sprintf(CS buffer, "%5d", size); |
172 | else if (size < 10*1024) | |
173 | sprintf(CS buffer, "%4.1fK", (double)size / 1024.0); | |
174 | else if (size < 1024*1024) | |
175 | sprintf(CS buffer, "%4dK", (size + 512)/1024); | |
176 | else if (size < 10*1024*1024) | |
177 | sprintf(CS buffer, "%4.1fM", (double)size / (1024.0 * 1024.0)); | |
178 | else | |
179 | sprintf(CS buffer, "%4dM", (size + 512 * 1024)/(1024*1024)); | |
180 | return buffer; | |
181 | } | |
182 | ||
183 | ||
184 | ||
185 | #ifndef COMPILE_UTILITY | |
186 | /************************************************* | |
187 | * Convert a number to base 62 format * | |
188 | *************************************************/ | |
189 | ||
190 | /* Convert a long integer into an ASCII base 62 string. For Cygwin the value of | |
191 | BASE_62 is actually 36. Always return exactly 6 characters plus zero, in a | |
192 | static area. | |
193 | ||
194 | Argument: a long integer | |
195 | Returns: pointer to base 62 string | |
196 | */ | |
197 | ||
198 | uschar * | |
199 | string_base62(unsigned long int value) | |
200 | { | |
201 | static uschar yield[7]; | |
202 | uschar *p = yield + sizeof(yield) - 1; | |
203 | *p = 0; | |
204 | while (p > yield) | |
205 | { | |
206 | *(--p) = base62_chars[value % BASE_62]; | |
207 | value /= BASE_62; | |
208 | } | |
209 | return yield; | |
210 | } | |
211 | #endif /* COMPILE_UTILITY */ | |
212 | ||
213 | ||
214 | ||
059ec3d9 PH |
215 | /************************************************* |
216 | * Interpret escape sequence * | |
217 | *************************************************/ | |
218 | ||
219 | /* This function is called from several places where escape sequences are to be | |
220 | interpreted in strings. | |
221 | ||
222 | Arguments: | |
223 | pp points a pointer to the initiating "\" in the string; | |
224 | the pointer gets updated to point to the final character | |
225 | Returns: the value of the character escape | |
226 | */ | |
227 | ||
228 | int | |
55414b25 | 229 | string_interpret_escape(const uschar **pp) |
059ec3d9 | 230 | { |
3fb3c68d JH |
231 | #ifdef COMPILE_UTILITY |
232 | const uschar *hex_digits= CUS"0123456789abcdef"; | |
233 | #endif | |
059ec3d9 | 234 | int ch; |
55414b25 | 235 | const uschar *p = *pp; |
059ec3d9 PH |
236 | ch = *(++p); |
237 | if (isdigit(ch) && ch != '8' && ch != '9') | |
238 | { | |
239 | ch -= '0'; | |
240 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
241 | { | |
242 | ch = ch * 8 + *(++p) - '0'; | |
243 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
244 | ch = ch * 8 + *(++p) - '0'; | |
245 | } | |
246 | } | |
247 | else switch(ch) | |
248 | { | |
c7396ac5 PP |
249 | case 'b': ch = '\b'; break; |
250 | case 'f': ch = '\f'; break; | |
059ec3d9 PH |
251 | case 'n': ch = '\n'; break; |
252 | case 'r': ch = '\r'; break; | |
253 | case 't': ch = '\t'; break; | |
c7396ac5 | 254 | case 'v': ch = '\v'; break; |
059ec3d9 PH |
255 | case 'x': |
256 | ch = 0; | |
257 | if (isxdigit(p[1])) | |
258 | { | |
259 | ch = ch * 16 + | |
260 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
261 | if (isxdigit(p[1])) ch = ch * 16 + | |
262 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
263 | } | |
264 | break; | |
265 | } | |
266 | *pp = p; | |
267 | return ch; | |
268 | } | |
059ec3d9 PH |
269 | |
270 | ||
271 | ||
272 | #ifndef COMPILE_UTILITY | |
273 | /************************************************* | |
274 | * Ensure string is printable * | |
275 | *************************************************/ | |
276 | ||
277 | /* This function is called for critical strings. It checks for any | |
278 | non-printing characters, and if any are found, it makes a new copy | |
279 | of the string with suitable escape sequences. It is most often called by the | |
280 | macro string_printing(), which sets allow_tab TRUE. | |
281 | ||
282 | Arguments: | |
283 | s the input string | |
284 | allow_tab TRUE to allow tab as a printing character | |
285 | ||
286 | Returns: string with non-printers encoded as printing sequences | |
287 | */ | |
288 | ||
55414b25 JH |
289 | const uschar * |
290 | string_printing2(const uschar *s, BOOL allow_tab) | |
059ec3d9 PH |
291 | { |
292 | int nonprintcount = 0; | |
293 | int length = 0; | |
55414b25 | 294 | const uschar *t = s; |
059ec3d9 PH |
295 | uschar *ss, *tt; |
296 | ||
297 | while (*t != 0) | |
298 | { | |
299 | int c = *t++; | |
300 | if (!mac_isprint(c) || (!allow_tab && c == '\t')) nonprintcount++; | |
301 | length++; | |
302 | } | |
303 | ||
304 | if (nonprintcount == 0) return s; | |
305 | ||
306 | /* Get a new block of store guaranteed big enough to hold the | |
307 | expanded string. */ | |
308 | ||
36719342 | 309 | ss = store_get(length + nonprintcount * 3 + 1); |
059ec3d9 | 310 | |
4c04137d | 311 | /* Copy everything, escaping non printers. */ |
059ec3d9 PH |
312 | |
313 | t = s; | |
314 | tt = ss; | |
315 | ||
316 | while (*t != 0) | |
317 | { | |
318 | int c = *t; | |
319 | if (mac_isprint(c) && (allow_tab || c != '\t')) *tt++ = *t++; else | |
320 | { | |
321 | *tt++ = '\\'; | |
322 | switch (*t) | |
323 | { | |
324 | case '\n': *tt++ = 'n'; break; | |
325 | case '\r': *tt++ = 'r'; break; | |
326 | case '\b': *tt++ = 'b'; break; | |
327 | case '\v': *tt++ = 'v'; break; | |
328 | case '\f': *tt++ = 'f'; break; | |
329 | case '\t': *tt++ = 't'; break; | |
330 | default: sprintf(CS tt, "%03o", *t); tt += 3; break; | |
331 | } | |
332 | t++; | |
333 | } | |
334 | } | |
335 | *tt = 0; | |
c7396ac5 PP |
336 | return ss; |
337 | } | |
79fe97d8 PP |
338 | #endif /* COMPILE_UTILITY */ |
339 | ||
c7396ac5 PP |
340 | /************************************************* |
341 | * Undo printing escapes in string * | |
342 | *************************************************/ | |
343 | ||
344 | /* This function is the reverse of string_printing2. It searches for | |
345 | backslash characters and if any are found, it makes a new copy of the | |
346 | string with escape sequences parsed. Otherwise it returns the original | |
347 | string. | |
348 | ||
349 | Arguments: | |
350 | s the input string | |
351 | ||
352 | Returns: string with printing escapes parsed back | |
353 | */ | |
354 | ||
355 | uschar * | |
356 | string_unprinting(uschar *s) | |
357 | { | |
358 | uschar *p, *q, *r, *ss; | |
359 | int len, off; | |
360 | ||
361 | p = Ustrchr(s, '\\'); | |
362 | if (!p) return s; | |
363 | ||
364 | len = Ustrlen(s) + 1; | |
365 | ss = store_get(len); | |
366 | ||
367 | q = ss; | |
368 | off = p - s; | |
369 | if (off) | |
370 | { | |
371 | memcpy(q, s, off); | |
372 | q += off; | |
373 | } | |
374 | ||
375 | while (*p) | |
376 | { | |
377 | if (*p == '\\') | |
378 | { | |
55414b25 | 379 | *q++ = string_interpret_escape((const uschar **)&p); |
823ad74f | 380 | p++; |
c7396ac5 PP |
381 | } |
382 | else | |
383 | { | |
384 | r = Ustrchr(p, '\\'); | |
385 | if (!r) | |
386 | { | |
387 | off = Ustrlen(p); | |
388 | memcpy(q, p, off); | |
389 | p += off; | |
390 | q += off; | |
391 | break; | |
392 | } | |
393 | else | |
394 | { | |
395 | off = r - p; | |
396 | memcpy(q, p, off); | |
397 | q += off; | |
398 | p = r; | |
399 | } | |
400 | } | |
401 | } | |
402 | *q = '\0'; | |
403 | ||
059ec3d9 PH |
404 | return ss; |
405 | } | |
059ec3d9 PH |
406 | |
407 | ||
408 | ||
409 | ||
410 | /************************************************* | |
411 | * Copy and save string * | |
412 | *************************************************/ | |
413 | ||
414 | /* This function assumes that memcpy() is faster than strcpy(). | |
415 | ||
416 | Argument: string to copy | |
417 | Returns: copy of string in new store | |
418 | */ | |
419 | ||
420 | uschar * | |
3f0945ff | 421 | string_copy(const uschar *s) |
059ec3d9 PH |
422 | { |
423 | int len = Ustrlen(s) + 1; | |
424 | uschar *ss = store_get(len); | |
425 | memcpy(ss, s, len); | |
426 | return ss; | |
427 | } | |
428 | ||
429 | ||
430 | ||
431 | /************************************************* | |
432 | * Copy and save string in malloc'd store * | |
433 | *************************************************/ | |
434 | ||
435 | /* This function assumes that memcpy() is faster than strcpy(). | |
436 | ||
437 | Argument: string to copy | |
438 | Returns: copy of string in new store | |
439 | */ | |
440 | ||
441 | uschar * | |
55414b25 | 442 | string_copy_malloc(const uschar *s) |
059ec3d9 PH |
443 | { |
444 | int len = Ustrlen(s) + 1; | |
445 | uschar *ss = store_malloc(len); | |
446 | memcpy(ss, s, len); | |
447 | return ss; | |
448 | } | |
449 | ||
450 | ||
451 | ||
452 | /************************************************* | |
453 | * Copy, lowercase and save string * | |
454 | *************************************************/ | |
455 | ||
456 | /* | |
457 | Argument: string to copy | |
458 | Returns: copy of string in new store, with letters lowercased | |
459 | */ | |
460 | ||
461 | uschar * | |
1dc92d5a | 462 | string_copylc(const uschar *s) |
059ec3d9 PH |
463 | { |
464 | uschar *ss = store_get(Ustrlen(s) + 1); | |
465 | uschar *p = ss; | |
466 | while (*s != 0) *p++ = tolower(*s++); | |
467 | *p = 0; | |
468 | return ss; | |
469 | } | |
470 | ||
471 | ||
472 | ||
473 | /************************************************* | |
474 | * Copy and save string, given length * | |
475 | *************************************************/ | |
476 | ||
477 | /* It is assumed the data contains no zeros. A zero is added | |
478 | onto the end. | |
479 | ||
480 | Arguments: | |
481 | s string to copy | |
482 | n number of characters | |
483 | ||
484 | Returns: copy of string in new store | |
485 | */ | |
486 | ||
487 | uschar * | |
1dc92d5a | 488 | string_copyn(const uschar *s, int n) |
059ec3d9 PH |
489 | { |
490 | uschar *ss = store_get(n + 1); | |
491 | Ustrncpy(ss, s, n); | |
492 | ss[n] = 0; | |
493 | return ss; | |
494 | } | |
495 | ||
496 | ||
497 | /************************************************* | |
498 | * Copy, lowercase, and save string, given length * | |
499 | *************************************************/ | |
500 | ||
501 | /* It is assumed the data contains no zeros. A zero is added | |
502 | onto the end. | |
503 | ||
504 | Arguments: | |
505 | s string to copy | |
506 | n number of characters | |
507 | ||
508 | Returns: copy of string in new store, with letters lowercased | |
509 | */ | |
510 | ||
511 | uschar * | |
512 | string_copynlc(uschar *s, int n) | |
513 | { | |
514 | uschar *ss = store_get(n + 1); | |
515 | uschar *p = ss; | |
516 | while (n-- > 0) *p++ = tolower(*s++); | |
517 | *p = 0; | |
518 | return ss; | |
519 | } | |
520 | ||
521 | ||
522 | ||
e28326d8 PH |
523 | /************************************************* |
524 | * Copy string if long, inserting newlines * | |
525 | *************************************************/ | |
526 | ||
527 | /* If the given string is longer than 75 characters, it is copied, and within | |
528 | the copy, certain space characters are converted into newlines. | |
529 | ||
530 | Argument: pointer to the string | |
531 | Returns: pointer to the possibly altered string | |
532 | */ | |
533 | ||
534 | uschar * | |
535 | string_split_message(uschar *msg) | |
536 | { | |
537 | uschar *s, *ss; | |
538 | ||
539 | if (msg == NULL || Ustrlen(msg) <= 75) return msg; | |
540 | s = ss = msg = string_copy(msg); | |
541 | ||
542 | for (;;) | |
543 | { | |
544 | int i = 0; | |
545 | while (i < 75 && *ss != 0 && *ss != '\n') ss++, i++; | |
546 | if (*ss == 0) break; | |
547 | if (*ss == '\n') | |
548 | s = ++ss; | |
549 | else | |
550 | { | |
551 | uschar *t = ss + 1; | |
552 | uschar *tt = NULL; | |
553 | while (--t > s + 35) | |
554 | { | |
555 | if (*t == ' ') | |
556 | { | |
557 | if (t[-1] == ':') { tt = t; break; } | |
558 | if (tt == NULL) tt = t; | |
559 | } | |
560 | } | |
561 | ||
562 | if (tt == NULL) /* Can't split behind - try ahead */ | |
563 | { | |
564 | t = ss + 1; | |
565 | while (*t != 0) | |
566 | { | |
567 | if (*t == ' ' || *t == '\n') | |
568 | { tt = t; break; } | |
569 | t++; | |
570 | } | |
571 | } | |
572 | ||
573 | if (tt == NULL) break; /* Can't find anywhere to split */ | |
574 | *tt = '\n'; | |
575 | s = ss = tt+1; | |
576 | } | |
577 | } | |
578 | ||
579 | return msg; | |
580 | } | |
581 | ||
582 | ||
583 | ||
059ec3d9 PH |
584 | /************************************************* |
585 | * Copy returned DNS domain name, de-escaping * | |
586 | *************************************************/ | |
587 | ||
588 | /* If a domain name contains top-bit characters, some resolvers return | |
589 | the fully qualified name with those characters turned into escapes. The | |
590 | convention is a backslash followed by _decimal_ digits. We convert these | |
591 | back into the original binary values. This will be relevant when | |
592 | allow_utf8_domains is set true and UTF-8 characters are used in domain | |
593 | names. Backslash can also be used to escape other characters, though we | |
594 | shouldn't come across them in domain names. | |
595 | ||
596 | Argument: the domain name string | |
597 | Returns: copy of string in new store, de-escaped | |
598 | */ | |
599 | ||
600 | uschar * | |
601 | string_copy_dnsdomain(uschar *s) | |
602 | { | |
603 | uschar *yield; | |
604 | uschar *ss = yield = store_get(Ustrlen(s) + 1); | |
605 | ||
606 | while (*s != 0) | |
607 | { | |
608 | if (*s != '\\') | |
609 | { | |
610 | *ss++ = *s++; | |
611 | } | |
612 | else if (isdigit(s[1])) | |
613 | { | |
614 | *ss++ = (s[1] - '0')*100 + (s[2] - '0')*10 + s[3] - '0'; | |
615 | s += 4; | |
616 | } | |
617 | else if (*(++s) != 0) | |
618 | { | |
619 | *ss++ = *s++; | |
620 | } | |
621 | } | |
622 | ||
623 | *ss = 0; | |
624 | return yield; | |
625 | } | |
626 | ||
627 | ||
628 | #ifndef COMPILE_UTILITY | |
629 | /************************************************* | |
630 | * Copy space-terminated or quoted string * | |
631 | *************************************************/ | |
632 | ||
633 | /* This function copies from a string until its end, or until whitespace is | |
634 | encountered, unless the string begins with a double quote, in which case the | |
635 | terminating quote is sought, and escaping within the string is done. The length | |
636 | of a de-quoted string can be no longer than the original, since escaping always | |
637 | turns n characters into 1 character. | |
638 | ||
639 | Argument: pointer to the pointer to the first character, which gets updated | |
640 | Returns: the new string | |
641 | */ | |
642 | ||
643 | uschar * | |
55414b25 | 644 | string_dequote(const uschar **sptr) |
059ec3d9 | 645 | { |
55414b25 | 646 | const uschar *s = *sptr; |
059ec3d9 PH |
647 | uschar *t, *yield; |
648 | ||
649 | /* First find the end of the string */ | |
650 | ||
651 | if (*s != '\"') | |
059ec3d9 | 652 | while (*s != 0 && !isspace(*s)) s++; |
059ec3d9 PH |
653 | else |
654 | { | |
655 | s++; | |
8c513105 | 656 | while (*s && *s != '\"') |
059ec3d9 PH |
657 | { |
658 | if (*s == '\\') (void)string_interpret_escape(&s); | |
659 | s++; | |
660 | } | |
8c513105 | 661 | if (*s) s++; |
059ec3d9 PH |
662 | } |
663 | ||
664 | /* Get enough store to copy into */ | |
665 | ||
666 | t = yield = store_get(s - *sptr + 1); | |
667 | s = *sptr; | |
668 | ||
669 | /* Do the copy */ | |
670 | ||
671 | if (*s != '\"') | |
672 | { | |
673 | while (*s != 0 && !isspace(*s)) *t++ = *s++; | |
674 | } | |
675 | else | |
676 | { | |
677 | s++; | |
678 | while (*s != 0 && *s != '\"') | |
679 | { | |
680 | if (*s == '\\') *t++ = string_interpret_escape(&s); | |
681 | else *t++ = *s; | |
682 | s++; | |
683 | } | |
684 | if (*s != 0) s++; | |
685 | } | |
686 | ||
687 | /* Update the pointer and return the terminated copy */ | |
688 | ||
689 | *sptr = s; | |
690 | *t = 0; | |
691 | return yield; | |
692 | } | |
693 | #endif /* COMPILE_UTILITY */ | |
694 | ||
695 | ||
696 | ||
697 | /************************************************* | |
698 | * Format a string and save it * | |
699 | *************************************************/ | |
700 | ||
94759fce | 701 | /* The formatting is done by string_vformat, which checks the length of |
059ec3d9 PH |
702 | everything. |
703 | ||
704 | Arguments: | |
705 | format a printf() format - deliberately char * rather than uschar * | |
706 | because it will most usually be a literal string | |
707 | ... arguments for format | |
708 | ||
709 | Returns: pointer to fresh piece of store containing sprintf'ed string | |
710 | */ | |
711 | ||
712 | uschar * | |
1ba28e2b | 713 | string_sprintf(const char *format, ...) |
059ec3d9 | 714 | { |
d12746bc | 715 | #ifdef COMPILE_UTILITY |
059ec3d9 | 716 | uschar buffer[STRING_SPRINTF_BUFFER_SIZE]; |
d12746bc JH |
717 | gstring g = { .size = STRING_SPRINTF_BUFFER_SIZE, .ptr = 0, .s = buffer }; |
718 | gstring * gp = &g; | |
719 | #else | |
720 | gstring * gp = string_get(STRING_SPRINTF_BUFFER_SIZE); | |
721 | #endif | |
722 | gstring * gp2; | |
723 | va_list ap; | |
724 | ||
059ec3d9 | 725 | va_start(ap, format); |
d12746bc JH |
726 | gp2 = string_vformat(gp, FALSE, format, ap); |
727 | gp->s[gp->ptr] = '\0'; | |
059ec3d9 | 728 | va_end(ap); |
d12746bc JH |
729 | |
730 | if (!gp2) | |
731 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
732 | "string_sprintf expansion was longer than %d; format string was (%s)\n" | |
733 | "expansion started '%.32s'", | |
734 | gp->size, format, gp->s); | |
735 | ||
736 | #ifdef COMPILE_UTILITY | |
737 | return string_copy(gp->s); | |
738 | #else | |
739 | gstring_reset_unused(gp); | |
740 | return gp->s; | |
741 | #endif | |
059ec3d9 PH |
742 | } |
743 | ||
744 | ||
745 | ||
746 | /************************************************* | |
747 | * Case-independent strncmp() function * | |
748 | *************************************************/ | |
749 | ||
750 | /* | |
751 | Arguments: | |
752 | s first string | |
753 | t second string | |
754 | n number of characters to compare | |
755 | ||
756 | Returns: < 0, = 0, or > 0, according to the comparison | |
757 | */ | |
758 | ||
759 | int | |
1ba28e2b | 760 | strncmpic(const uschar *s, const uschar *t, int n) |
059ec3d9 PH |
761 | { |
762 | while (n--) | |
763 | { | |
764 | int c = tolower(*s++) - tolower(*t++); | |
765 | if (c) return c; | |
766 | } | |
767 | return 0; | |
768 | } | |
769 | ||
770 | ||
771 | /************************************************* | |
772 | * Case-independent strcmp() function * | |
773 | *************************************************/ | |
774 | ||
775 | /* | |
776 | Arguments: | |
777 | s first string | |
778 | t second string | |
779 | ||
780 | Returns: < 0, = 0, or > 0, according to the comparison | |
781 | */ | |
782 | ||
783 | int | |
1ba28e2b | 784 | strcmpic(const uschar *s, const uschar *t) |
059ec3d9 PH |
785 | { |
786 | while (*s != 0) | |
787 | { | |
788 | int c = tolower(*s++) - tolower(*t++); | |
789 | if (c != 0) return c; | |
790 | } | |
791 | return *t; | |
792 | } | |
793 | ||
794 | ||
795 | /************************************************* | |
796 | * Case-independent strstr() function * | |
797 | *************************************************/ | |
798 | ||
799 | /* The third argument specifies whether whitespace is required | |
800 | to follow the matched string. | |
801 | ||
802 | Arguments: | |
803 | s string to search | |
804 | t substring to search for | |
805 | space_follows if TRUE, match only if whitespace follows | |
806 | ||
807 | Returns: pointer to substring in string, or NULL if not found | |
808 | */ | |
809 | ||
810 | uschar * | |
811 | strstric(uschar *s, uschar *t, BOOL space_follows) | |
812 | { | |
813 | uschar *p = t; | |
814 | uschar *yield = NULL; | |
815 | int cl = tolower(*p); | |
816 | int cu = toupper(*p); | |
817 | ||
818 | while (*s) | |
819 | { | |
820 | if (*s == cl || *s == cu) | |
821 | { | |
822 | if (yield == NULL) yield = s; | |
823 | if (*(++p) == 0) | |
824 | { | |
825 | if (!space_follows || s[1] == ' ' || s[1] == '\n' ) return yield; | |
826 | yield = NULL; | |
827 | p = t; | |
828 | } | |
829 | cl = tolower(*p); | |
830 | cu = toupper(*p); | |
831 | s++; | |
832 | } | |
833 | else if (yield != NULL) | |
834 | { | |
835 | yield = NULL; | |
836 | p = t; | |
837 | cl = tolower(*p); | |
838 | cu = toupper(*p); | |
839 | } | |
840 | else s++; | |
841 | } | |
842 | return NULL; | |
843 | } | |
844 | ||
845 | ||
846 | ||
d12746bc JH |
847 | #ifdef COMPILE_UTILITY |
848 | /* Dummy version for this function; it should never be called */ | |
849 | static void | |
850 | gstring_grow(gstring * g, int p, int count) | |
851 | { | |
852 | assert(FALSE); | |
853 | } | |
854 | #endif | |
855 | ||
856 | ||
857 | ||
059ec3d9 PH |
858 | #ifndef COMPILE_UTILITY |
859 | /************************************************* | |
860 | * Get next string from separated list * | |
861 | *************************************************/ | |
862 | ||
863 | /* Leading and trailing space is removed from each item. The separator in the | |
864 | list is controlled by the int pointed to by the separator argument as follows: | |
865 | ||
ec95d1a6 PH |
866 | If the value is > 0 it is used as the separator. This is typically used for |
867 | sublists such as slash-separated options. The value is always a printing | |
868 | character. | |
869 | ||
870 | (If the value is actually > UCHAR_MAX there is only one item in the list. | |
059ec3d9 PH |
871 | This is used for some cases when called via functions that sometimes |
872 | plough through lists, and sometimes are given single items.) | |
059ec3d9 | 873 | |
ec95d1a6 PH |
874 | If the value is <= 0, the string is inspected for a leading <x, where x is an |
875 | ispunct() or an iscntrl() character. If found, x is used as the separator. If | |
876 | not found: | |
877 | ||
878 | (a) if separator == 0, ':' is used | |
879 | (b) if separator <0, -separator is used | |
880 | ||
881 | In all cases the value of the separator that is used is written back to the | |
882 | int so that it is used on subsequent calls as we progress through the list. | |
883 | ||
884 | A literal ispunct() separator can be represented in an item by doubling, but | |
885 | there is no way to include an iscntrl() separator as part of the data. | |
059ec3d9 PH |
886 | |
887 | Arguments: | |
888 | listptr points to a pointer to the current start of the list; the | |
889 | pointer gets updated to point after the end of the next item | |
890 | separator a pointer to the separator character in an int (see above) | |
891 | buffer where to put a copy of the next string in the list; or | |
892 | NULL if the next string is returned in new memory | |
893 | buflen when buffer is not NULL, the size of buffer; otherwise ignored | |
894 | ||
895 | Returns: pointer to buffer, containing the next substring, | |
896 | or NULL if no more substrings | |
897 | */ | |
898 | ||
899 | uschar * | |
55414b25 | 900 | string_nextinlist(const uschar **listptr, int *separator, uschar *buffer, int buflen) |
059ec3d9 | 901 | { |
55414b25 JH |
902 | int sep = *separator; |
903 | const uschar *s = *listptr; | |
ec95d1a6 | 904 | BOOL sep_is_special; |
059ec3d9 | 905 | |
8b455685 | 906 | if (!s) return NULL; |
ec95d1a6 PH |
907 | |
908 | /* This allows for a fixed specified separator to be an iscntrl() character, | |
909 | but at the time of implementation, this is never the case. However, it's best | |
910 | to be conservative. */ | |
911 | ||
912 | while (isspace(*s) && *s != sep) s++; | |
913 | ||
914 | /* A change of separator is permitted, so look for a leading '<' followed by an | |
915 | allowed character. */ | |
059ec3d9 PH |
916 | |
917 | if (sep <= 0) | |
918 | { | |
ec95d1a6 | 919 | if (*s == '<' && (ispunct(s[1]) || iscntrl(s[1]))) |
059ec3d9 PH |
920 | { |
921 | sep = s[1]; | |
b72f857f | 922 | if (*++s) ++s; |
ec95d1a6 | 923 | while (isspace(*s) && *s != sep) s++; |
059ec3d9 PH |
924 | } |
925 | else | |
8b455685 | 926 | sep = sep ? -sep : ':'; |
059ec3d9 PH |
927 | *separator = sep; |
928 | } | |
929 | ||
ec95d1a6 PH |
930 | /* An empty string has no list elements */ |
931 | ||
8b455685 | 932 | if (!*s) return NULL; |
059ec3d9 | 933 | |
ec95d1a6 PH |
934 | /* Note whether whether or not the separator is an iscntrl() character. */ |
935 | ||
936 | sep_is_special = iscntrl(sep); | |
937 | ||
059ec3d9 PH |
938 | /* Handle the case when a buffer is provided. */ |
939 | ||
617d3932 | 940 | if (buffer) |
059ec3d9 | 941 | { |
d4ff61d1 | 942 | int p = 0; |
8b455685 | 943 | for (; *s; s++) |
059ec3d9 | 944 | { |
ec95d1a6 | 945 | if (*s == sep && (*(++s) != sep || sep_is_special)) break; |
059ec3d9 PH |
946 | if (p < buflen - 1) buffer[p++] = *s; |
947 | } | |
948 | while (p > 0 && isspace(buffer[p-1])) p--; | |
8b455685 | 949 | buffer[p] = '\0'; |
059ec3d9 PH |
950 | } |
951 | ||
952 | /* Handle the case when a buffer is not provided. */ | |
953 | ||
954 | else | |
955 | { | |
acec9514 | 956 | gstring * g = NULL; |
ec95d1a6 | 957 | |
059ec3d9 | 958 | /* We know that *s != 0 at this point. However, it might be pointing to a |
ec95d1a6 PH |
959 | separator, which could indicate an empty string, or (if an ispunct() |
960 | character) could be doubled to indicate a separator character as data at the | |
961 | start of a string. Avoid getting working memory for an empty item. */ | |
059ec3d9 PH |
962 | |
963 | if (*s == sep) | |
964 | { | |
965 | s++; | |
ec95d1a6 PH |
966 | if (*s != sep || sep_is_special) |
967 | { | |
968 | *listptr = s; | |
969 | return string_copy(US""); | |
970 | } | |
059ec3d9 PH |
971 | } |
972 | ||
ec95d1a6 PH |
973 | /* Not an empty string; the first character is guaranteed to be a data |
974 | character. */ | |
975 | ||
976 | for (;;) | |
059ec3d9 | 977 | { |
d7978c0f JH |
978 | const uschar * ss; |
979 | for (ss = s + 1; *ss && *ss != sep; ) ss++; | |
acec9514 | 980 | g = string_catn(g, s, ss-s); |
ec95d1a6 | 981 | s = ss; |
8b455685 | 982 | if (!*s || *++s != sep || sep_is_special) break; |
059ec3d9 | 983 | } |
acec9514 JH |
984 | while (g->ptr > 0 && isspace(g->s[g->ptr-1])) g->ptr--; |
985 | buffer = string_from_gstring(g); | |
617d3932 | 986 | gstring_reset_unused(g); |
059ec3d9 PH |
987 | } |
988 | ||
989 | /* Update the current pointer and return the new string */ | |
990 | ||
991 | *listptr = s; | |
992 | return buffer; | |
993 | } | |
059ec3d9 PH |
994 | |
995 | ||
4226691b JH |
996 | static const uschar * |
997 | Ustrnchr(const uschar * s, int c, unsigned * len) | |
998 | { | |
999 | unsigned siz = *len; | |
1000 | while (siz) | |
1001 | { | |
1002 | if (!*s) return NULL; | |
1003 | if (*s == c) | |
1004 | { | |
1005 | *len = siz; | |
1006 | return s; | |
1007 | } | |
1008 | s++; | |
1009 | siz--; | |
1010 | } | |
1011 | return NULL; | |
1012 | } | |
1013 | ||
1014 | ||
76146973 | 1015 | /************************************************ |
1d9ddac9 | 1016 | * Add element to separated list * |
76146973 | 1017 | ************************************************/ |
4226691b JH |
1018 | /* This function is used to build a list, returning an allocated null-terminated |
1019 | growable string. The given element has any embedded separator characters | |
76146973 JH |
1020 | doubled. |
1021 | ||
4226691b JH |
1022 | Despite having the same growable-string interface as string_cat() the list is |
1023 | always returned null-terminated. | |
1024 | ||
76146973 | 1025 | Arguments: |
acec9514 | 1026 | list expanding-string for the list that is being built, or NULL |
76146973 | 1027 | if this is a new list that has no contents yet |
4c04137d JS |
1028 | sep list separator character |
1029 | ele new element to be appended to the list | |
76146973 JH |
1030 | |
1031 | Returns: pointer to the start of the list, changed if copied for expansion. | |
1032 | */ | |
1033 | ||
acec9514 JH |
1034 | gstring * |
1035 | string_append_listele(gstring * list, uschar sep, const uschar * ele) | |
76146973 | 1036 | { |
76146973 JH |
1037 | uschar * sp; |
1038 | ||
acec9514 JH |
1039 | if (list && list->ptr) |
1040 | list = string_catn(list, &sep, 1); | |
76146973 | 1041 | |
e3dd1d67 | 1042 | while((sp = Ustrchr(ele, sep))) |
76146973 | 1043 | { |
acec9514 JH |
1044 | list = string_catn(list, ele, sp-ele+1); |
1045 | list = string_catn(list, &sep, 1); | |
76146973 JH |
1046 | ele = sp+1; |
1047 | } | |
acec9514 JH |
1048 | list = string_cat(list, ele); |
1049 | (void) string_from_gstring(list); | |
4226691b | 1050 | return list; |
76146973 | 1051 | } |
00ba27c5 JH |
1052 | |
1053 | ||
acec9514 JH |
1054 | gstring * |
1055 | string_append_listele_n(gstring * list, uschar sep, const uschar * ele, | |
1056 | unsigned len) | |
00ba27c5 | 1057 | { |
00ba27c5 JH |
1058 | const uschar * sp; |
1059 | ||
acec9514 JH |
1060 | if (list && list->ptr) |
1061 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1062 | |
1063 | while((sp = Ustrnchr(ele, sep, &len))) | |
1064 | { | |
acec9514 JH |
1065 | list = string_catn(list, ele, sp-ele+1); |
1066 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1067 | ele = sp+1; |
1068 | len--; | |
1069 | } | |
acec9514 JH |
1070 | list = string_catn(list, ele, len); |
1071 | (void) string_from_gstring(list); | |
4226691b | 1072 | return list; |
00ba27c5 | 1073 | } |
76146973 JH |
1074 | |
1075 | ||
059ec3d9 | 1076 | |
bce15b62 JH |
1077 | /* A slightly-bogus listmaker utility; the separator is a string so |
1078 | can be multiple chars - there is no checking for the element content | |
1079 | containing any of the separator. */ | |
1080 | ||
1081 | gstring * | |
1082 | string_append2_listele_n(gstring * list, const uschar * sepstr, | |
1083 | const uschar * ele, unsigned len) | |
1084 | { | |
bce15b62 JH |
1085 | if (list && list->ptr) |
1086 | list = string_cat(list, sepstr); | |
1087 | ||
1088 | list = string_catn(list, ele, len); | |
1089 | (void) string_from_gstring(list); | |
1090 | return list; | |
1091 | } | |
1092 | ||
1093 | ||
1094 | ||
acec9514 JH |
1095 | /************************************************/ |
1096 | /* Create a growable-string with some preassigned space */ | |
1097 | ||
1098 | gstring * | |
1099 | string_get(unsigned size) | |
1100 | { | |
1101 | gstring * g = store_get(sizeof(gstring) + size); | |
1102 | g->size = size; | |
1103 | g->ptr = 0; | |
1104 | g->s = US(g + 1); | |
1105 | return g; | |
1106 | } | |
1107 | ||
1108 | /* NUL-terminate the C string in the growable-string, and return it. */ | |
1109 | ||
1110 | uschar * | |
1111 | string_from_gstring(gstring * g) | |
1112 | { | |
1113 | if (!g) return NULL; | |
1114 | g->s[g->ptr] = '\0'; | |
1115 | return g->s; | |
1116 | } | |
1117 | ||
617d3932 JH |
1118 | void |
1119 | gstring_reset_unused(gstring * g) | |
1120 | { | |
1121 | store_reset(g->s + (g->size = g->ptr + 1)); | |
1122 | } | |
1123 | ||
059ec3d9 | 1124 | |
d12746bc JH |
1125 | /* Add more space to a growable-string. |
1126 | ||
1127 | Arguments: | |
1128 | g the growable-string | |
938593e9 JH |
1129 | p current end of data |
1130 | count amount to grow by | |
1131 | */ | |
1132 | ||
1133 | static void | |
acec9514 JH |
1134 | gstring_grow(gstring * g, int p, int count) |
1135 | { | |
1136 | int oldsize = g->size; | |
1137 | ||
1138 | /* Mostly, string_cat() is used to build small strings of a few hundred | |
1139 | characters at most. There are times, however, when the strings are very much | |
1140 | longer (for example, a lookup that returns a vast number of alias addresses). | |
1141 | To try to keep things reasonable, we use increments whose size depends on the | |
1142 | existing length of the string. */ | |
1143 | ||
1144 | unsigned inc = oldsize < 4096 ? 127 : 1023; | |
1145 | g->size = ((p + count + inc) & ~inc) + 1; | |
1146 | ||
1147 | /* Try to extend an existing allocation. If the result of calling | |
1148 | store_extend() is false, either there isn't room in the current memory block, | |
1149 | or this string is not the top item on the dynamic store stack. We then have | |
1150 | to get a new chunk of store and copy the old string. When building large | |
1151 | strings, it is helpful to call store_release() on the old string, to release | |
1152 | memory blocks that have become empty. (The block will be freed if the string | |
1153 | is at its start.) However, we can do this only if we know that the old string | |
1154 | was the last item on the dynamic memory stack. This is the case if it matches | |
1155 | store_last_get. */ | |
1156 | ||
1157 | if (!store_extend(g->s, oldsize, g->size)) | |
459fca58 | 1158 | g->s = store_newblock(g->s, g->size, p); |
acec9514 JH |
1159 | } |
1160 | ||
1161 | ||
1162 | ||
d12746bc JH |
1163 | /************************************************* |
1164 | * Add chars to string * | |
1165 | *************************************************/ | |
059ec3d9 PH |
1166 | /* This function is used when building up strings of unknown length. Room is |
1167 | always left for a terminating zero to be added to the string that is being | |
1168 | built. This function does not require the string that is being added to be NUL | |
1169 | terminated, because the number of characters to add is given explicitly. It is | |
1170 | sometimes called to extract parts of other strings. | |
1171 | ||
1172 | Arguments: | |
1173 | string points to the start of the string that is being built, or NULL | |
1174 | if this is a new string that has no contents yet | |
059ec3d9 PH |
1175 | s points to characters to add |
1176 | count count of characters to add; must not exceed the length of s, if s | |
42055a33 | 1177 | is a C string. |
059ec3d9 | 1178 | |
059ec3d9 PH |
1179 | Returns: pointer to the start of the string, changed if copied for expansion. |
1180 | Note that a NUL is not added, though space is left for one. This is | |
1181 | because string_cat() is often called multiple times to build up a | |
1182 | string - there's no point adding the NUL till the end. | |
a1b8a755 | 1183 | |
059ec3d9 | 1184 | */ |
96f5fe4c | 1185 | /* coverity[+alloc] */ |
059ec3d9 | 1186 | |
acec9514 JH |
1187 | gstring * |
1188 | string_catn(gstring * g, const uschar *s, int count) | |
059ec3d9 | 1189 | { |
acec9514 | 1190 | int p; |
059ec3d9 | 1191 | |
acec9514 | 1192 | if (!g) |
059ec3d9 | 1193 | { |
acec9514 JH |
1194 | unsigned inc = count < 4096 ? 127 : 1023; |
1195 | unsigned size = ((count + inc) & ~inc) + 1; | |
1196 | g = string_get(size); | |
059ec3d9 PH |
1197 | } |
1198 | ||
acec9514 JH |
1199 | p = g->ptr; |
1200 | if (p + count >= g->size) | |
1201 | gstring_grow(g, p, count); | |
1202 | ||
059ec3d9 PH |
1203 | /* Because we always specify the exact number of characters to copy, we can |
1204 | use memcpy(), which is likely to be more efficient than strncopy() because the | |
acec9514 | 1205 | latter has to check for zero bytes. */ |
059ec3d9 | 1206 | |
acec9514 JH |
1207 | memcpy(g->s + p, s, count); |
1208 | g->ptr = p + count; | |
1209 | return g; | |
059ec3d9 | 1210 | } |
acec9514 JH |
1211 | |
1212 | ||
1213 | gstring * | |
1214 | string_cat(gstring *string, const uschar *s) | |
c2f669a4 | 1215 | { |
acec9514 | 1216 | return string_catn(string, s, Ustrlen(s)); |
c2f669a4 | 1217 | } |
059ec3d9 PH |
1218 | |
1219 | ||
1220 | ||
059ec3d9 PH |
1221 | /************************************************* |
1222 | * Append strings to another string * | |
1223 | *************************************************/ | |
1224 | ||
1225 | /* This function can be used to build a string from many other strings. | |
1226 | It calls string_cat() to do the dirty work. | |
1227 | ||
1228 | Arguments: | |
acec9514 | 1229 | string expanding-string that is being built, or NULL |
059ec3d9 | 1230 | if this is a new string that has no contents yet |
059ec3d9 PH |
1231 | count the number of strings to append |
1232 | ... "count" uschar* arguments, which must be valid zero-terminated | |
1233 | C strings | |
1234 | ||
1235 | Returns: pointer to the start of the string, changed if copied for expansion. | |
1236 | The string is not zero-terminated - see string_cat() above. | |
1237 | */ | |
1238 | ||
acec9514 JH |
1239 | __inline__ gstring * |
1240 | string_append(gstring *string, int count, ...) | |
059ec3d9 PH |
1241 | { |
1242 | va_list ap; | |
059ec3d9 PH |
1243 | |
1244 | va_start(ap, count); | |
acec9514 | 1245 | while (count-- > 0) |
059ec3d9 PH |
1246 | { |
1247 | uschar *t = va_arg(ap, uschar *); | |
acec9514 | 1248 | string = string_cat(string, t); |
059ec3d9 PH |
1249 | } |
1250 | va_end(ap); | |
1251 | ||
1252 | return string; | |
1253 | } | |
1254 | #endif | |
1255 | ||
1256 | ||
1257 | ||
1258 | /************************************************* | |
1259 | * Format a string with length checks * | |
1260 | *************************************************/ | |
1261 | ||
1262 | /* This function is used to format a string with checking of the length of the | |
1263 | output for all conversions. It protects Exim from absent-mindedness when | |
1264 | calling functions like debug_printf and string_sprintf, and elsewhere. There | |
1265 | are two different entry points to what is actually the same function, depending | |
1266 | on whether the variable length list of data arguments are given explicitly or | |
1267 | as a va_list item. | |
1268 | ||
1269 | The formats are the usual printf() ones, with some omissions (never used) and | |
c0b9d3e8 | 1270 | three additions for strings: %S forces lower case, %T forces upper case, and |
acec9514 | 1271 | %#s or %#S prints nothing for a NULL string. Without the # "NULL" is printed |
c0b9d3e8 JH |
1272 | (useful in debugging). There is also the addition of %D and %M, which insert |
1273 | the date in the form used for datestamped log files. | |
059ec3d9 PH |
1274 | |
1275 | Arguments: | |
1276 | buffer a buffer in which to put the formatted string | |
1277 | buflen the length of the buffer | |
1278 | format the format string - deliberately char * and not uschar * | |
1279 | ... or ap variable list of supplementary arguments | |
1280 | ||
1281 | Returns: TRUE if the result fitted in the buffer | |
1282 | */ | |
1283 | ||
1284 | BOOL | |
d12746bc | 1285 | string_format(uschar * buffer, int buflen, const char * format, ...) |
059ec3d9 | 1286 | { |
d12746bc | 1287 | gstring g = { .size = buflen, .ptr = 0, .s = buffer }, *gp; |
059ec3d9 PH |
1288 | va_list ap; |
1289 | va_start(ap, format); | |
d12746bc | 1290 | gp = string_vformat(&g, FALSE, format, ap); |
059ec3d9 | 1291 | va_end(ap); |
d12746bc JH |
1292 | g.s[g.ptr] = '\0'; |
1293 | return !!gp; | |
059ec3d9 PH |
1294 | } |
1295 | ||
1296 | ||
d12746bc JH |
1297 | |
1298 | ||
1299 | ||
1300 | /* Bulid or append to a growing-string, sprintf-style. | |
1301 | ||
1302 | If the "extend" argument is true, the string passed in can be NULL, | |
1303 | empty, or non-empty. | |
1304 | ||
1305 | If the "extend" argument is false, the string passed in may not be NULL, | |
1306 | will not be grown, and is usable in the original place after return. | |
1307 | The return value can be NULL to signify overflow. | |
1308 | ||
1309 | Returns the possibly-new (if copy for growth was needed) string, | |
1310 | not nul-terminated. | |
1311 | */ | |
1312 | ||
1313 | gstring * | |
1314 | string_vformat(gstring * g, BOOL extend, const char *format, va_list ap) | |
059ec3d9 | 1315 | { |
d12746bc JH |
1316 | enum ltypes { L_NORMAL=1, L_SHORT=2, L_LONG=3, L_LONGLONG=4, L_LONGDOUBLE=5, L_SIZE=6 }; |
1317 | ||
1318 | int width, precision, off, lim; | |
1319 | const char * fp = format; /* Deliberately not unsigned */ | |
b1c749bb | 1320 | |
d12746bc JH |
1321 | string_datestamp_offset = -1; /* Datestamp not inserted */ |
1322 | string_datestamp_length = 0; /* Datestamp not inserted */ | |
1323 | string_datestamp_type = 0; /* Datestamp not inserted */ | |
059ec3d9 | 1324 | |
d12746bc JH |
1325 | #ifdef COMPILE_UTILITY |
1326 | assert(!extend); | |
1327 | assert(g); | |
1328 | #else | |
1329 | ||
1330 | /* Ensure we have a string, to save on checking later */ | |
1331 | if (!g) g = string_get(16); | |
1332 | #endif /*!COMPILE_UTILITY*/ | |
1333 | ||
1334 | lim = g->size - 1; /* leave one for a nul */ | |
1335 | off = g->ptr; /* remember initial offset in gstring */ | |
059ec3d9 PH |
1336 | |
1337 | /* Scan the format and handle the insertions */ | |
1338 | ||
d12746bc | 1339 | while (*fp) |
059ec3d9 | 1340 | { |
b1c749bb | 1341 | int length = L_NORMAL; |
059ec3d9 PH |
1342 | int *nptr; |
1343 | int slen; | |
d12746bc JH |
1344 | const char *null = "NULL"; /* ) These variables */ |
1345 | const char *item_start, *s; /* ) are deliberately */ | |
1346 | char newformat[16]; /* ) not unsigned */ | |
1347 | char * gp = CS g->s + g->ptr; /* ) */ | |
059ec3d9 PH |
1348 | |
1349 | /* Non-% characters just get copied verbatim */ | |
1350 | ||
1351 | if (*fp != '%') | |
1352 | { | |
d12746bc JH |
1353 | /* Avoid string_copyn() due to COMPILE_UTILITY */ |
1354 | if (g->ptr >= lim - 1) | |
1100a343 JH |
1355 | { |
1356 | if (!extend) return NULL; | |
1357 | gstring_grow(g, g->ptr, 1); | |
1358 | lim = g->size - 1; | |
1359 | } | |
d12746bc | 1360 | g->s[g->ptr++] = (uschar) *fp++; |
059ec3d9 PH |
1361 | continue; |
1362 | } | |
1363 | ||
1364 | /* Deal with % characters. Pick off the width and precision, for checking | |
1365 | strings, skipping over the flag and modifier characters. */ | |
1366 | ||
1367 | item_start = fp; | |
1368 | width = precision = -1; | |
1369 | ||
1370 | if (strchr("-+ #0", *(++fp)) != NULL) | |
1371 | { | |
1372 | if (*fp == '#') null = ""; | |
1373 | fp++; | |
1374 | } | |
1375 | ||
1376 | if (isdigit((uschar)*fp)) | |
1377 | { | |
1378 | width = *fp++ - '0'; | |
1379 | while (isdigit((uschar)*fp)) width = width * 10 + *fp++ - '0'; | |
1380 | } | |
1381 | else if (*fp == '*') | |
1382 | { | |
1383 | width = va_arg(ap, int); | |
1384 | fp++; | |
1385 | } | |
1386 | ||
1387 | if (*fp == '.') | |
059ec3d9 PH |
1388 | if (*(++fp) == '*') |
1389 | { | |
1390 | precision = va_arg(ap, int); | |
1391 | fp++; | |
1392 | } | |
1393 | else | |
d12746bc JH |
1394 | for (precision = 0; isdigit((uschar)*fp); fp++) |
1395 | precision = precision*10 + *fp - '0'; | |
059ec3d9 | 1396 | |
91a246f6 | 1397 | /* Skip over 'h', 'L', 'l', 'll' and 'z', remembering the item length */ |
b1c749bb PH |
1398 | |
1399 | if (*fp == 'h') | |
1400 | { fp++; length = L_SHORT; } | |
1401 | else if (*fp == 'L') | |
1402 | { fp++; length = L_LONGDOUBLE; } | |
1403 | else if (*fp == 'l') | |
b1c749bb | 1404 | if (fp[1] == 'l') |
d12746bc | 1405 | { fp += 2; length = L_LONGLONG; } |
b1c749bb | 1406 | else |
d12746bc | 1407 | { fp++; length = L_LONG; } |
91a246f6 PP |
1408 | else if (*fp == 'z') |
1409 | { fp++; length = L_SIZE; } | |
059ec3d9 PH |
1410 | |
1411 | /* Handle each specific format type. */ | |
1412 | ||
1413 | switch (*fp++) | |
1414 | { | |
1415 | case 'n': | |
d12746bc JH |
1416 | nptr = va_arg(ap, int *); |
1417 | *nptr = g->ptr - off; | |
1418 | break; | |
059ec3d9 PH |
1419 | |
1420 | case 'd': | |
1421 | case 'o': | |
1422 | case 'u': | |
1423 | case 'x': | |
1424 | case 'X': | |
d12746bc JH |
1425 | width = length > L_LONG ? 24 : 12; |
1426 | if (g->ptr >= lim - width) | |
1100a343 JH |
1427 | { |
1428 | if (!extend) return NULL; | |
1429 | gstring_grow(g, g->ptr, width); | |
1430 | lim = g->size - 1; | |
1431 | gp = CS g->s + g->ptr; | |
1432 | } | |
d12746bc JH |
1433 | strncpy(newformat, item_start, fp - item_start); |
1434 | newformat[fp - item_start] = 0; | |
b1c749bb | 1435 | |
d12746bc JH |
1436 | /* Short int is promoted to int when passing through ..., so we must use |
1437 | int for va_arg(). */ | |
b1c749bb | 1438 | |
d12746bc JH |
1439 | switch(length) |
1440 | { | |
1441 | case L_SHORT: | |
1442 | case L_NORMAL: | |
1443 | g->ptr += sprintf(gp, newformat, va_arg(ap, int)); break; | |
1444 | case L_LONG: | |
1445 | g->ptr += sprintf(gp, newformat, va_arg(ap, long int)); break; | |
1446 | case L_LONGLONG: | |
1447 | g->ptr += sprintf(gp, newformat, va_arg(ap, LONGLONG_T)); break; | |
1448 | case L_SIZE: | |
1449 | g->ptr += sprintf(gp, newformat, va_arg(ap, size_t)); break; | |
1450 | } | |
1451 | break; | |
059ec3d9 PH |
1452 | |
1453 | case 'p': | |
2e8db779 JH |
1454 | { |
1455 | void * ptr; | |
d12746bc | 1456 | if (g->ptr >= lim - 24) |
1100a343 JH |
1457 | { |
1458 | if (!extend) return NULL; | |
1459 | gstring_grow(g, g->ptr, 24); | |
1460 | lim = g->size - 1; | |
1461 | gp = CS g->s + g->ptr; | |
1462 | } | |
81f358da JH |
1463 | /* sprintf() saying "(nil)" for a null pointer seems unreliable. |
1464 | Handle it explicitly. */ | |
2e8db779 JH |
1465 | if ((ptr = va_arg(ap, void *))) |
1466 | { | |
1467 | strncpy(newformat, item_start, fp - item_start); | |
1468 | newformat[fp - item_start] = 0; | |
d12746bc | 1469 | g->ptr += sprintf(gp, newformat, ptr); |
2e8db779 JH |
1470 | } |
1471 | else | |
d12746bc | 1472 | g->ptr += sprintf(gp, "(nil)"); |
2e8db779 | 1473 | } |
059ec3d9 PH |
1474 | break; |
1475 | ||
1476 | /* %f format is inherently insecure if the numbers that it may be | |
870f6ba8 TF |
1477 | handed are unknown (e.g. 1e300). However, in Exim, %f is used for |
1478 | printing load averages, and these are actually stored as integers | |
1479 | (load average * 1000) so the size of the numbers is constrained. | |
1480 | It is also used for formatting sending rates, where the simplicity | |
1481 | of the format prevents overflow. */ | |
059ec3d9 PH |
1482 | |
1483 | case 'f': | |
1484 | case 'e': | |
1485 | case 'E': | |
1486 | case 'g': | |
1487 | case 'G': | |
d12746bc JH |
1488 | if (precision < 0) precision = 6; |
1489 | if (g->ptr >= lim - precision - 8) | |
1100a343 JH |
1490 | { |
1491 | if (!extend) return NULL; | |
1492 | gstring_grow(g, g->ptr, precision+8); | |
1493 | lim = g->size - 1; | |
1494 | gp = CS g->s + g->ptr; | |
1495 | } | |
d12746bc JH |
1496 | strncpy(newformat, item_start, fp - item_start); |
1497 | newformat[fp-item_start] = 0; | |
1498 | if (length == L_LONGDOUBLE) | |
1499 | g->ptr += sprintf(gp, newformat, va_arg(ap, long double)); | |
1500 | else | |
1501 | g->ptr += sprintf(gp, newformat, va_arg(ap, double)); | |
1502 | break; | |
059ec3d9 PH |
1503 | |
1504 | /* String types */ | |
1505 | ||
1506 | case '%': | |
d12746bc | 1507 | if (g->ptr >= lim - 1) |
1100a343 JH |
1508 | { |
1509 | if (!extend) return NULL; | |
1510 | gstring_grow(g, g->ptr, 1); | |
1511 | lim = g->size - 1; | |
1512 | } | |
d12746bc JH |
1513 | g->s[g->ptr++] = (uschar) '%'; |
1514 | break; | |
059ec3d9 PH |
1515 | |
1516 | case 'c': | |
d12746bc | 1517 | if (g->ptr >= lim - 1) |
1100a343 JH |
1518 | { |
1519 | if (!extend) return NULL; | |
1520 | gstring_grow(g, g->ptr, 1); | |
1521 | lim = g->size - 1; | |
1522 | } | |
d12746bc JH |
1523 | g->s[g->ptr++] = (uschar) va_arg(ap, int); |
1524 | break; | |
059ec3d9 | 1525 | |
f1e5fef5 | 1526 | case 'D': /* Insert daily datestamp for log file names */ |
d12746bc JH |
1527 | s = CS tod_stamp(tod_log_datestamp_daily); |
1528 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1529 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1530 | string_datestamp_type = tod_log_datestamp_daily; | |
1531 | slen = string_datestamp_length; | |
1532 | goto INSERT_STRING; | |
f1e5fef5 PP |
1533 | |
1534 | case 'M': /* Insert monthly datestamp for log file names */ | |
d12746bc JH |
1535 | s = CS tod_stamp(tod_log_datestamp_monthly); |
1536 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1537 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1538 | string_datestamp_type = tod_log_datestamp_monthly; | |
1539 | slen = string_datestamp_length; | |
1540 | goto INSERT_STRING; | |
059ec3d9 PH |
1541 | |
1542 | case 's': | |
1543 | case 'S': /* Forces *lower* case */ | |
c0b9d3e8 | 1544 | case 'T': /* Forces *upper* case */ |
d12746bc | 1545 | s = va_arg(ap, char *); |
059ec3d9 | 1546 | |
d12746bc JH |
1547 | if (!s) s = null; |
1548 | slen = Ustrlen(s); | |
059ec3d9 | 1549 | |
f1e5fef5 PP |
1550 | INSERT_STRING: /* Come to from %D or %M above */ |
1551 | ||
059ec3d9 | 1552 | { |
d12746bc | 1553 | BOOL truncated = FALSE; |
059ec3d9 | 1554 | |
d12746bc JH |
1555 | /* If the width is specified, check that there is a precision |
1556 | set; if not, set it to the width to prevent overruns of long | |
1557 | strings. */ | |
059ec3d9 | 1558 | |
d12746bc JH |
1559 | if (width >= 0) |
1560 | { | |
1561 | if (precision < 0) precision = width; | |
1562 | } | |
059ec3d9 | 1563 | |
d12746bc JH |
1564 | /* If a width is not specified and the precision is specified, set |
1565 | the width to the precision, or the string length if shorted. */ | |
059ec3d9 | 1566 | |
d12746bc JH |
1567 | else if (precision >= 0) |
1568 | width = precision < slen ? precision : slen; | |
059ec3d9 | 1569 | |
d12746bc | 1570 | /* If neither are specified, set them both to the string length. */ |
059ec3d9 | 1571 | |
d12746bc JH |
1572 | else |
1573 | width = precision = slen; | |
1574 | ||
1575 | if (!extend) | |
1576 | { | |
1577 | if (g->ptr == lim) return NULL; | |
1578 | if (g->ptr >= lim - width) | |
1579 | { | |
1580 | truncated = TRUE; | |
1581 | width = precision = lim - g->ptr - 1; | |
1582 | if (width < 0) width = 0; | |
1583 | if (precision < 0) precision = 0; | |
1584 | } | |
1585 | } | |
1586 | else if (g->ptr >= lim - width) | |
1100a343 JH |
1587 | { |
1588 | gstring_grow(g, g->ptr, width - (lim - g->ptr)); | |
1589 | lim = g->size - 1; | |
1590 | gp = CS g->s + g->ptr; | |
1591 | } | |
d12746bc JH |
1592 | |
1593 | g->ptr += sprintf(gp, "%*.*s", width, precision, s); | |
1594 | if (fp[-1] == 'S') | |
1595 | while (*gp) { *gp = tolower(*gp); gp++; } | |
1596 | else if (fp[-1] == 'T') | |
1597 | while (*gp) { *gp = toupper(*gp); gp++; } | |
1598 | ||
1599 | if (truncated) return NULL; | |
1600 | break; | |
059ec3d9 | 1601 | } |
059ec3d9 PH |
1602 | |
1603 | /* Some things are never used in Exim; also catches junk. */ | |
1604 | ||
1605 | default: | |
d12746bc JH |
1606 | strncpy(newformat, item_start, fp - item_start); |
1607 | newformat[fp-item_start] = 0; | |
1608 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "string_format: unsupported type " | |
1609 | "in \"%s\" in \"%s\"", newformat, format); | |
1610 | break; | |
059ec3d9 PH |
1611 | } |
1612 | } | |
1613 | ||
d12746bc JH |
1614 | return g; |
1615 | } | |
059ec3d9 | 1616 | |
059ec3d9 | 1617 | |
d12746bc JH |
1618 | |
1619 | #ifndef COMPILE_UTILITY | |
1620 | ||
1621 | gstring * | |
1622 | string_fmt_append(gstring * g, const char *format, ...) | |
1623 | { | |
1624 | va_list ap; | |
1625 | va_start(ap, format); | |
1626 | g = string_vformat(g, TRUE, format, ap); | |
1627 | va_end(ap); | |
1628 | return g; | |
059ec3d9 PH |
1629 | } |
1630 | ||
1631 | ||
1632 | ||
059ec3d9 PH |
1633 | /************************************************* |
1634 | * Generate an "open failed" message * | |
1635 | *************************************************/ | |
1636 | ||
1637 | /* This function creates a message after failure to open a file. It includes a | |
1638 | string supplied as data, adds the strerror() text, and if the failure was | |
1639 | "Permission denied", reads and includes the euid and egid. | |
1640 | ||
1641 | Arguments: | |
1642 | eno the value of errno after the failure | |
1643 | format a text format string - deliberately not uschar * | |
1644 | ... arguments for the format string | |
1645 | ||
1646 | Returns: a message, in dynamic store | |
1647 | */ | |
1648 | ||
1649 | uschar * | |
1ba28e2b | 1650 | string_open_failed(int eno, const char *format, ...) |
059ec3d9 PH |
1651 | { |
1652 | va_list ap; | |
d12746bc | 1653 | gstring * g = string_get(1024); |
059ec3d9 | 1654 | |
d12746bc | 1655 | g = string_catn(g, US"failed to open ", 15); |
059ec3d9 PH |
1656 | |
1657 | /* Use the checked formatting routine to ensure that the buffer | |
1658 | does not overflow. It should not, since this is called only for internally | |
1659 | specified messages. If it does, the message just gets truncated, and there | |
1660 | doesn't seem much we can do about that. */ | |
1661 | ||
d12746bc JH |
1662 | va_start(ap, format); |
1663 | (void) string_vformat(g, FALSE, format, ap); | |
1664 | string_from_gstring(g); | |
1665 | gstring_reset_unused(g); | |
cb570b5e | 1666 | va_end(ap); |
059ec3d9 | 1667 | |
d12746bc JH |
1668 | return eno == EACCES |
1669 | ? string_sprintf("%s: %s (euid=%ld egid=%ld)", g->s, strerror(eno), | |
1670 | (long int)geteuid(), (long int)getegid()) | |
1671 | : string_sprintf("%s: %s", g->s, strerror(eno)); | |
059ec3d9 PH |
1672 | } |
1673 | #endif /* COMPILE_UTILITY */ | |
1674 | ||
1675 | ||
1676 | ||
059ec3d9 PH |
1677 | |
1678 | ||
bc3c7bb7 HSHR |
1679 | #ifndef COMPILE_UTILITY |
1680 | /* qsort(3), currently used to sort the environment variables | |
1681 | for -bP environment output, needs a function to compare two pointers to string | |
1682 | pointers. Here it is. */ | |
1683 | ||
1684 | int | |
84bbb4d8 | 1685 | string_compare_by_pointer(const void *a, const void *b) |
bc3c7bb7 | 1686 | { |
35a5627d | 1687 | return Ustrcmp(* CUSS a, * CUSS b); |
bc3c7bb7 HSHR |
1688 | } |
1689 | #endif /* COMPILE_UTILITY */ | |
059ec3d9 PH |
1690 | |
1691 | ||
1692 | ||
d12746bc | 1693 | |
059ec3d9 PH |
1694 | /************************************************* |
1695 | ************************************************** | |
1696 | * Stand-alone test program * | |
1697 | ************************************************** | |
1698 | *************************************************/ | |
1699 | ||
1700 | #ifdef STAND_ALONE | |
1701 | int main(void) | |
1702 | { | |
1703 | uschar buffer[256]; | |
1704 | ||
1705 | printf("Testing is_ip_address\n"); | |
1706 | ||
1707 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1708 | { | |
1709 | int offset; | |
1710 | buffer[Ustrlen(buffer) - 1] = 0; | |
1711 | printf("%d\n", string_is_ip_address(buffer, NULL)); | |
1712 | printf("%d %d %s\n", string_is_ip_address(buffer, &offset), offset, buffer); | |
1713 | } | |
1714 | ||
1715 | printf("Testing string_nextinlist\n"); | |
1716 | ||
1717 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1718 | { | |
1719 | uschar *list = buffer; | |
1720 | uschar *lp1, *lp2; | |
1721 | uschar item[256]; | |
1722 | int sep1 = 0; | |
1723 | int sep2 = 0; | |
1724 | ||
1725 | if (*list == '<') | |
1726 | { | |
1727 | sep1 = sep2 = list[1]; | |
1728 | list += 2; | |
1729 | } | |
1730 | ||
1731 | lp1 = lp2 = list; | |
1732 | for (;;) | |
1733 | { | |
1734 | uschar *item1 = string_nextinlist(&lp1, &sep1, item, sizeof(item)); | |
1735 | uschar *item2 = string_nextinlist(&lp2, &sep2, NULL, 0); | |
1736 | ||
1737 | if (item1 == NULL && item2 == NULL) break; | |
1738 | if (item == NULL || item2 == NULL || Ustrcmp(item1, item2) != 0) | |
1739 | { | |
1740 | printf("***ERROR\nitem1=\"%s\"\nitem2=\"%s\"\n", | |
1741 | (item1 == NULL)? "NULL" : CS item1, | |
1742 | (item2 == NULL)? "NULL" : CS item2); | |
1743 | break; | |
1744 | } | |
1745 | else printf(" \"%s\"\n", CS item1); | |
1746 | } | |
1747 | } | |
1748 | ||
1749 | /* This is a horrible lash-up, but it serves its purpose. */ | |
1750 | ||
1751 | printf("Testing string_format\n"); | |
1752 | ||
1753 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1754 | { | |
1755 | void *args[3]; | |
ed72ace5 | 1756 | long long llargs[3]; |
059ec3d9 PH |
1757 | double dargs[3]; |
1758 | int dflag = 0; | |
ed72ace5 | 1759 | int llflag = 0; |
059ec3d9 PH |
1760 | int n = 0; |
1761 | int count; | |
1762 | int countset = 0; | |
1763 | uschar format[256]; | |
1764 | uschar outbuf[256]; | |
1765 | uschar *s; | |
1766 | buffer[Ustrlen(buffer) - 1] = 0; | |
1767 | ||
1768 | s = Ustrchr(buffer, ','); | |
1769 | if (s == NULL) s = buffer + Ustrlen(buffer); | |
1770 | ||
1771 | Ustrncpy(format, buffer, s - buffer); | |
1772 | format[s-buffer] = 0; | |
1773 | ||
1774 | if (*s == ',') s++; | |
1775 | ||
1776 | while (*s != 0) | |
1777 | { | |
1778 | uschar *ss = s; | |
1779 | s = Ustrchr(ss, ','); | |
1780 | if (s == NULL) s = ss + Ustrlen(ss); | |
1781 | ||
1782 | if (isdigit(*ss)) | |
1783 | { | |
1784 | Ustrncpy(outbuf, ss, s-ss); | |
1785 | if (Ustrchr(outbuf, '.') != NULL) | |
1786 | { | |
1787 | dflag = 1; | |
1788 | dargs[n++] = Ustrtod(outbuf, NULL); | |
1789 | } | |
ed72ace5 PH |
1790 | else if (Ustrstr(outbuf, "ll") != NULL) |
1791 | { | |
1792 | llflag = 1; | |
1793 | llargs[n++] = strtoull(CS outbuf, NULL, 10); | |
1794 | } | |
059ec3d9 PH |
1795 | else |
1796 | { | |
1797 | args[n++] = (void *)Uatoi(outbuf); | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | else if (Ustrcmp(ss, "*") == 0) | |
1802 | { | |
1803 | args[n++] = (void *)(&count); | |
1804 | countset = 1; | |
1805 | } | |
1806 | ||
1807 | else | |
1808 | { | |
1809 | uschar *sss = malloc(s - ss + 1); | |
1810 | Ustrncpy(sss, ss, s-ss); | |
1811 | args[n++] = sss; | |
1812 | } | |
1813 | ||
1814 | if (*s == ',') s++; | |
1815 | } | |
1816 | ||
ed72ace5 PH |
1817 | if (!dflag && !llflag) |
1818 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1819 | args[0], args[1], args[2])? "True" : "False"); | |
1820 | ||
1821 | else if (dflag) | |
1822 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1823 | dargs[0], dargs[1], dargs[2])? "True" : "False"); | |
059ec3d9 PH |
1824 | |
1825 | else printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
ed72ace5 | 1826 | llargs[0], llargs[1], llargs[2])? "True" : "False"); |
059ec3d9 PH |
1827 | |
1828 | printf("%s\n", CS outbuf); | |
1829 | if (countset) printf("count=%d\n", count); | |
1830 | } | |
1831 | ||
1832 | return 0; | |
1833 | } | |
1834 | #endif | |
1835 | ||
1836 | /* End of string.c */ |