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 PH |
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 | ||
8d909960 | 46 | if (maskptr) |
059ec3d9 | 47 | { |
b1f8e4f8 | 48 | const uschar *ss = s + Ustrlen(s); |
059ec3d9 PH |
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 | ||
8d909960 | 83 | if (*s == 0 || *s == '%' || *s == '/') return had_double_colon ? yield : 0; |
059ec3d9 PH |
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 | ||
1688f43b PH |
130 | if (!v4end) |
131 | return (*s == 0 || *s == '%' || | |
132 | (*s == '/' && maskptr != NULL && *maskptr != 0))? yield : 0; | |
059ec3d9 PH |
133 | } |
134 | ||
135 | /* Test for IPv4 address, which may be the tail-end of an IPv6 address. */ | |
136 | ||
137 | for (i = 0; i < 4; i++) | |
138 | { | |
8d909960 JH |
139 | long n; |
140 | uschar * end; | |
141 | ||
059ec3d9 | 142 | if (i != 0 && *s++ != '.') return 0; |
8d909960 JH |
143 | n = strtol(CCS s, CSS &end, 10); |
144 | if (n > 255 || n < 0 || end <= s || end > s+3) return 0; | |
145 | s = end; | |
059ec3d9 PH |
146 | } |
147 | ||
8d909960 | 148 | return !*s || (*s == '/' && maskptr && *maskptr != 0) ? yield : 0; |
059ec3d9 PH |
149 | } |
150 | #endif /* COMPILE_UTILITY */ | |
151 | ||
152 | ||
153 | /************************************************* | |
154 | * Format message size * | |
155 | *************************************************/ | |
156 | ||
157 | /* Convert a message size in bytes to printing form, rounding | |
158 | according to the magnitude of the number. A value of zero causes | |
159 | a string of spaces to be returned. | |
160 | ||
161 | Arguments: | |
162 | size the message size in bytes | |
163 | buffer where to put the answer | |
164 | ||
165 | Returns: pointer to the buffer | |
166 | a string of exactly 5 characters is normally returned | |
167 | */ | |
168 | ||
169 | uschar * | |
170 | string_format_size(int size, uschar *buffer) | |
171 | { | |
45500060 | 172 | if (size == 0) Ustrcpy(buffer, " "); |
059ec3d9 PH |
173 | else if (size < 1024) sprintf(CS buffer, "%5d", size); |
174 | else if (size < 10*1024) | |
175 | sprintf(CS buffer, "%4.1fK", (double)size / 1024.0); | |
176 | else if (size < 1024*1024) | |
177 | sprintf(CS buffer, "%4dK", (size + 512)/1024); | |
178 | else if (size < 10*1024*1024) | |
179 | sprintf(CS buffer, "%4.1fM", (double)size / (1024.0 * 1024.0)); | |
180 | else | |
181 | sprintf(CS buffer, "%4dM", (size + 512 * 1024)/(1024*1024)); | |
182 | return buffer; | |
183 | } | |
184 | ||
185 | ||
186 | ||
187 | #ifndef COMPILE_UTILITY | |
188 | /************************************************* | |
189 | * Convert a number to base 62 format * | |
190 | *************************************************/ | |
191 | ||
192 | /* Convert a long integer into an ASCII base 62 string. For Cygwin the value of | |
193 | BASE_62 is actually 36. Always return exactly 6 characters plus zero, in a | |
194 | static area. | |
195 | ||
196 | Argument: a long integer | |
197 | Returns: pointer to base 62 string | |
198 | */ | |
199 | ||
200 | uschar * | |
201 | string_base62(unsigned long int value) | |
202 | { | |
203 | static uschar yield[7]; | |
204 | uschar *p = yield + sizeof(yield) - 1; | |
205 | *p = 0; | |
206 | while (p > yield) | |
207 | { | |
208 | *(--p) = base62_chars[value % BASE_62]; | |
209 | value /= BASE_62; | |
210 | } | |
211 | return yield; | |
212 | } | |
213 | #endif /* COMPILE_UTILITY */ | |
214 | ||
215 | ||
216 | ||
059ec3d9 PH |
217 | /************************************************* |
218 | * Interpret escape sequence * | |
219 | *************************************************/ | |
220 | ||
221 | /* This function is called from several places where escape sequences are to be | |
222 | interpreted in strings. | |
223 | ||
224 | Arguments: | |
225 | pp points a pointer to the initiating "\" in the string; | |
226 | the pointer gets updated to point to the final character | |
227 | Returns: the value of the character escape | |
228 | */ | |
229 | ||
230 | int | |
55414b25 | 231 | string_interpret_escape(const uschar **pp) |
059ec3d9 | 232 | { |
3fb3c68d JH |
233 | #ifdef COMPILE_UTILITY |
234 | const uschar *hex_digits= CUS"0123456789abcdef"; | |
235 | #endif | |
059ec3d9 | 236 | int ch; |
55414b25 | 237 | const uschar *p = *pp; |
059ec3d9 PH |
238 | ch = *(++p); |
239 | if (isdigit(ch) && ch != '8' && ch != '9') | |
240 | { | |
241 | ch -= '0'; | |
242 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
243 | { | |
244 | ch = ch * 8 + *(++p) - '0'; | |
245 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
246 | ch = ch * 8 + *(++p) - '0'; | |
247 | } | |
248 | } | |
249 | else switch(ch) | |
250 | { | |
c7396ac5 PP |
251 | case 'b': ch = '\b'; break; |
252 | case 'f': ch = '\f'; break; | |
059ec3d9 PH |
253 | case 'n': ch = '\n'; break; |
254 | case 'r': ch = '\r'; break; | |
255 | case 't': ch = '\t'; break; | |
c7396ac5 | 256 | case 'v': ch = '\v'; break; |
059ec3d9 PH |
257 | case 'x': |
258 | ch = 0; | |
259 | if (isxdigit(p[1])) | |
260 | { | |
261 | ch = ch * 16 + | |
262 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
263 | if (isxdigit(p[1])) ch = ch * 16 + | |
264 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
265 | } | |
266 | break; | |
267 | } | |
268 | *pp = p; | |
269 | return ch; | |
270 | } | |
059ec3d9 PH |
271 | |
272 | ||
273 | ||
274 | #ifndef COMPILE_UTILITY | |
275 | /************************************************* | |
276 | * Ensure string is printable * | |
277 | *************************************************/ | |
278 | ||
279 | /* This function is called for critical strings. It checks for any | |
280 | non-printing characters, and if any are found, it makes a new copy | |
281 | of the string with suitable escape sequences. It is most often called by the | |
282 | macro string_printing(), which sets allow_tab TRUE. | |
283 | ||
284 | Arguments: | |
285 | s the input string | |
286 | allow_tab TRUE to allow tab as a printing character | |
287 | ||
288 | Returns: string with non-printers encoded as printing sequences | |
289 | */ | |
290 | ||
55414b25 JH |
291 | const uschar * |
292 | string_printing2(const uschar *s, BOOL allow_tab) | |
059ec3d9 PH |
293 | { |
294 | int nonprintcount = 0; | |
295 | int length = 0; | |
55414b25 | 296 | const uschar *t = s; |
059ec3d9 PH |
297 | uschar *ss, *tt; |
298 | ||
299 | while (*t != 0) | |
300 | { | |
301 | int c = *t++; | |
302 | if (!mac_isprint(c) || (!allow_tab && c == '\t')) nonprintcount++; | |
303 | length++; | |
304 | } | |
305 | ||
306 | if (nonprintcount == 0) return s; | |
307 | ||
308 | /* Get a new block of store guaranteed big enough to hold the | |
309 | expanded string. */ | |
310 | ||
36719342 | 311 | ss = store_get(length + nonprintcount * 3 + 1); |
059ec3d9 | 312 | |
4c04137d | 313 | /* Copy everything, escaping non printers. */ |
059ec3d9 PH |
314 | |
315 | t = s; | |
316 | tt = ss; | |
317 | ||
318 | while (*t != 0) | |
319 | { | |
320 | int c = *t; | |
321 | if (mac_isprint(c) && (allow_tab || c != '\t')) *tt++ = *t++; else | |
322 | { | |
323 | *tt++ = '\\'; | |
324 | switch (*t) | |
325 | { | |
326 | case '\n': *tt++ = 'n'; break; | |
327 | case '\r': *tt++ = 'r'; break; | |
328 | case '\b': *tt++ = 'b'; break; | |
329 | case '\v': *tt++ = 'v'; break; | |
330 | case '\f': *tt++ = 'f'; break; | |
331 | case '\t': *tt++ = 't'; break; | |
332 | default: sprintf(CS tt, "%03o", *t); tt += 3; break; | |
333 | } | |
334 | t++; | |
335 | } | |
336 | } | |
337 | *tt = 0; | |
c7396ac5 PP |
338 | return ss; |
339 | } | |
79fe97d8 PP |
340 | #endif /* COMPILE_UTILITY */ |
341 | ||
c7396ac5 PP |
342 | /************************************************* |
343 | * Undo printing escapes in string * | |
344 | *************************************************/ | |
345 | ||
346 | /* This function is the reverse of string_printing2. It searches for | |
347 | backslash characters and if any are found, it makes a new copy of the | |
348 | string with escape sequences parsed. Otherwise it returns the original | |
349 | string. | |
350 | ||
351 | Arguments: | |
352 | s the input string | |
353 | ||
354 | Returns: string with printing escapes parsed back | |
355 | */ | |
356 | ||
357 | uschar * | |
358 | string_unprinting(uschar *s) | |
359 | { | |
360 | uschar *p, *q, *r, *ss; | |
361 | int len, off; | |
362 | ||
363 | p = Ustrchr(s, '\\'); | |
364 | if (!p) return s; | |
365 | ||
366 | len = Ustrlen(s) + 1; | |
367 | ss = store_get(len); | |
368 | ||
369 | q = ss; | |
370 | off = p - s; | |
371 | if (off) | |
372 | { | |
373 | memcpy(q, s, off); | |
374 | q += off; | |
375 | } | |
376 | ||
377 | while (*p) | |
378 | { | |
379 | if (*p == '\\') | |
380 | { | |
55414b25 | 381 | *q++ = string_interpret_escape((const uschar **)&p); |
823ad74f | 382 | p++; |
c7396ac5 PP |
383 | } |
384 | else | |
385 | { | |
386 | r = Ustrchr(p, '\\'); | |
387 | if (!r) | |
388 | { | |
389 | off = Ustrlen(p); | |
390 | memcpy(q, p, off); | |
391 | p += off; | |
392 | q += off; | |
393 | break; | |
394 | } | |
395 | else | |
396 | { | |
397 | off = r - p; | |
398 | memcpy(q, p, off); | |
399 | q += off; | |
400 | p = r; | |
401 | } | |
402 | } | |
403 | } | |
404 | *q = '\0'; | |
405 | ||
059ec3d9 PH |
406 | return ss; |
407 | } | |
059ec3d9 PH |
408 | |
409 | ||
410 | ||
411 | ||
412 | /************************************************* | |
413 | * Copy and save string * | |
414 | *************************************************/ | |
415 | ||
416 | /* This function assumes that memcpy() is faster than strcpy(). | |
417 | ||
418 | Argument: string to copy | |
419 | Returns: copy of string in new store | |
420 | */ | |
421 | ||
422 | uschar * | |
3f0945ff | 423 | string_copy(const uschar *s) |
059ec3d9 PH |
424 | { |
425 | int len = Ustrlen(s) + 1; | |
426 | uschar *ss = store_get(len); | |
427 | memcpy(ss, s, len); | |
428 | return ss; | |
429 | } | |
430 | ||
431 | ||
432 | ||
433 | /************************************************* | |
434 | * Copy and save string in malloc'd store * | |
435 | *************************************************/ | |
436 | ||
437 | /* This function assumes that memcpy() is faster than strcpy(). | |
438 | ||
439 | Argument: string to copy | |
440 | Returns: copy of string in new store | |
441 | */ | |
442 | ||
443 | uschar * | |
55414b25 | 444 | string_copy_malloc(const uschar *s) |
059ec3d9 PH |
445 | { |
446 | int len = Ustrlen(s) + 1; | |
447 | uschar *ss = store_malloc(len); | |
448 | memcpy(ss, s, len); | |
449 | return ss; | |
450 | } | |
451 | ||
452 | ||
453 | ||
454 | /************************************************* | |
455 | * Copy, lowercase and save string * | |
456 | *************************************************/ | |
457 | ||
458 | /* | |
459 | Argument: string to copy | |
460 | Returns: copy of string in new store, with letters lowercased | |
461 | */ | |
462 | ||
463 | uschar * | |
1dc92d5a | 464 | string_copylc(const uschar *s) |
059ec3d9 PH |
465 | { |
466 | uschar *ss = store_get(Ustrlen(s) + 1); | |
467 | uschar *p = ss; | |
468 | while (*s != 0) *p++ = tolower(*s++); | |
469 | *p = 0; | |
470 | return ss; | |
471 | } | |
472 | ||
473 | ||
474 | ||
475 | /************************************************* | |
476 | * Copy and save string, given length * | |
477 | *************************************************/ | |
478 | ||
479 | /* It is assumed the data contains no zeros. A zero is added | |
480 | onto the end. | |
481 | ||
482 | Arguments: | |
483 | s string to copy | |
484 | n number of characters | |
485 | ||
486 | Returns: copy of string in new store | |
487 | */ | |
488 | ||
489 | uschar * | |
1dc92d5a | 490 | string_copyn(const uschar *s, int n) |
059ec3d9 PH |
491 | { |
492 | uschar *ss = store_get(n + 1); | |
493 | Ustrncpy(ss, s, n); | |
494 | ss[n] = 0; | |
495 | return ss; | |
496 | } | |
497 | ||
498 | ||
499 | /************************************************* | |
500 | * Copy, lowercase, and save string, given length * | |
501 | *************************************************/ | |
502 | ||
503 | /* It is assumed the data contains no zeros. A zero is added | |
504 | onto the end. | |
505 | ||
506 | Arguments: | |
507 | s string to copy | |
508 | n number of characters | |
509 | ||
510 | Returns: copy of string in new store, with letters lowercased | |
511 | */ | |
512 | ||
513 | uschar * | |
514 | string_copynlc(uschar *s, int n) | |
515 | { | |
516 | uschar *ss = store_get(n + 1); | |
517 | uschar *p = ss; | |
518 | while (n-- > 0) *p++ = tolower(*s++); | |
519 | *p = 0; | |
520 | return ss; | |
521 | } | |
522 | ||
523 | ||
524 | ||
e28326d8 PH |
525 | /************************************************* |
526 | * Copy string if long, inserting newlines * | |
527 | *************************************************/ | |
528 | ||
529 | /* If the given string is longer than 75 characters, it is copied, and within | |
530 | the copy, certain space characters are converted into newlines. | |
531 | ||
532 | Argument: pointer to the string | |
533 | Returns: pointer to the possibly altered string | |
534 | */ | |
535 | ||
536 | uschar * | |
537 | string_split_message(uschar *msg) | |
538 | { | |
539 | uschar *s, *ss; | |
540 | ||
541 | if (msg == NULL || Ustrlen(msg) <= 75) return msg; | |
542 | s = ss = msg = string_copy(msg); | |
543 | ||
544 | for (;;) | |
545 | { | |
546 | int i = 0; | |
547 | while (i < 75 && *ss != 0 && *ss != '\n') ss++, i++; | |
548 | if (*ss == 0) break; | |
549 | if (*ss == '\n') | |
550 | s = ++ss; | |
551 | else | |
552 | { | |
553 | uschar *t = ss + 1; | |
554 | uschar *tt = NULL; | |
555 | while (--t > s + 35) | |
556 | { | |
557 | if (*t == ' ') | |
558 | { | |
559 | if (t[-1] == ':') { tt = t; break; } | |
560 | if (tt == NULL) tt = t; | |
561 | } | |
562 | } | |
563 | ||
564 | if (tt == NULL) /* Can't split behind - try ahead */ | |
565 | { | |
566 | t = ss + 1; | |
567 | while (*t != 0) | |
568 | { | |
569 | if (*t == ' ' || *t == '\n') | |
570 | { tt = t; break; } | |
571 | t++; | |
572 | } | |
573 | } | |
574 | ||
575 | if (tt == NULL) break; /* Can't find anywhere to split */ | |
576 | *tt = '\n'; | |
577 | s = ss = tt+1; | |
578 | } | |
579 | } | |
580 | ||
581 | return msg; | |
582 | } | |
583 | ||
584 | ||
585 | ||
059ec3d9 PH |
586 | /************************************************* |
587 | * Copy returned DNS domain name, de-escaping * | |
588 | *************************************************/ | |
589 | ||
590 | /* If a domain name contains top-bit characters, some resolvers return | |
591 | the fully qualified name with those characters turned into escapes. The | |
592 | convention is a backslash followed by _decimal_ digits. We convert these | |
593 | back into the original binary values. This will be relevant when | |
594 | allow_utf8_domains is set true and UTF-8 characters are used in domain | |
595 | names. Backslash can also be used to escape other characters, though we | |
596 | shouldn't come across them in domain names. | |
597 | ||
598 | Argument: the domain name string | |
599 | Returns: copy of string in new store, de-escaped | |
600 | */ | |
601 | ||
602 | uschar * | |
603 | string_copy_dnsdomain(uschar *s) | |
604 | { | |
605 | uschar *yield; | |
606 | uschar *ss = yield = store_get(Ustrlen(s) + 1); | |
607 | ||
608 | while (*s != 0) | |
609 | { | |
610 | if (*s != '\\') | |
611 | { | |
612 | *ss++ = *s++; | |
613 | } | |
614 | else if (isdigit(s[1])) | |
615 | { | |
616 | *ss++ = (s[1] - '0')*100 + (s[2] - '0')*10 + s[3] - '0'; | |
617 | s += 4; | |
618 | } | |
619 | else if (*(++s) != 0) | |
620 | { | |
621 | *ss++ = *s++; | |
622 | } | |
623 | } | |
624 | ||
625 | *ss = 0; | |
626 | return yield; | |
627 | } | |
628 | ||
629 | ||
630 | #ifndef COMPILE_UTILITY | |
631 | /************************************************* | |
632 | * Copy space-terminated or quoted string * | |
633 | *************************************************/ | |
634 | ||
635 | /* This function copies from a string until its end, or until whitespace is | |
636 | encountered, unless the string begins with a double quote, in which case the | |
637 | terminating quote is sought, and escaping within the string is done. The length | |
638 | of a de-quoted string can be no longer than the original, since escaping always | |
639 | turns n characters into 1 character. | |
640 | ||
641 | Argument: pointer to the pointer to the first character, which gets updated | |
642 | Returns: the new string | |
643 | */ | |
644 | ||
645 | uschar * | |
55414b25 | 646 | string_dequote(const uschar **sptr) |
059ec3d9 | 647 | { |
55414b25 | 648 | const uschar *s = *sptr; |
059ec3d9 PH |
649 | uschar *t, *yield; |
650 | ||
651 | /* First find the end of the string */ | |
652 | ||
653 | if (*s != '\"') | |
059ec3d9 | 654 | while (*s != 0 && !isspace(*s)) s++; |
059ec3d9 PH |
655 | else |
656 | { | |
657 | s++; | |
8c513105 | 658 | while (*s && *s != '\"') |
059ec3d9 PH |
659 | { |
660 | if (*s == '\\') (void)string_interpret_escape(&s); | |
661 | s++; | |
662 | } | |
8c513105 | 663 | if (*s) s++; |
059ec3d9 PH |
664 | } |
665 | ||
666 | /* Get enough store to copy into */ | |
667 | ||
668 | t = yield = store_get(s - *sptr + 1); | |
669 | s = *sptr; | |
670 | ||
671 | /* Do the copy */ | |
672 | ||
673 | if (*s != '\"') | |
674 | { | |
675 | while (*s != 0 && !isspace(*s)) *t++ = *s++; | |
676 | } | |
677 | else | |
678 | { | |
679 | s++; | |
680 | while (*s != 0 && *s != '\"') | |
681 | { | |
682 | if (*s == '\\') *t++ = string_interpret_escape(&s); | |
683 | else *t++ = *s; | |
684 | s++; | |
685 | } | |
686 | if (*s != 0) s++; | |
687 | } | |
688 | ||
689 | /* Update the pointer and return the terminated copy */ | |
690 | ||
691 | *sptr = s; | |
692 | *t = 0; | |
693 | return yield; | |
694 | } | |
695 | #endif /* COMPILE_UTILITY */ | |
696 | ||
697 | ||
698 | ||
699 | /************************************************* | |
700 | * Format a string and save it * | |
701 | *************************************************/ | |
702 | ||
94759fce | 703 | /* The formatting is done by string_vformat, which checks the length of |
059ec3d9 PH |
704 | everything. |
705 | ||
706 | Arguments: | |
707 | format a printf() format - deliberately char * rather than uschar * | |
708 | because it will most usually be a literal string | |
709 | ... arguments for format | |
710 | ||
711 | Returns: pointer to fresh piece of store containing sprintf'ed string | |
712 | */ | |
713 | ||
714 | uschar * | |
1ba28e2b | 715 | string_sprintf(const char *format, ...) |
059ec3d9 | 716 | { |
d12746bc | 717 | #ifdef COMPILE_UTILITY |
059ec3d9 | 718 | uschar buffer[STRING_SPRINTF_BUFFER_SIZE]; |
d12746bc JH |
719 | gstring g = { .size = STRING_SPRINTF_BUFFER_SIZE, .ptr = 0, .s = buffer }; |
720 | gstring * gp = &g; | |
721 | #else | |
722 | gstring * gp = string_get(STRING_SPRINTF_BUFFER_SIZE); | |
723 | #endif | |
724 | gstring * gp2; | |
725 | va_list ap; | |
726 | ||
059ec3d9 | 727 | va_start(ap, format); |
d12746bc JH |
728 | gp2 = string_vformat(gp, FALSE, format, ap); |
729 | gp->s[gp->ptr] = '\0'; | |
059ec3d9 | 730 | va_end(ap); |
d12746bc JH |
731 | |
732 | if (!gp2) | |
733 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
734 | "string_sprintf expansion was longer than %d; format string was (%s)\n" | |
735 | "expansion started '%.32s'", | |
736 | gp->size, format, gp->s); | |
737 | ||
738 | #ifdef COMPILE_UTILITY | |
739 | return string_copy(gp->s); | |
740 | #else | |
741 | gstring_reset_unused(gp); | |
742 | return gp->s; | |
743 | #endif | |
059ec3d9 PH |
744 | } |
745 | ||
746 | ||
747 | ||
748 | /************************************************* | |
749 | * Case-independent strncmp() function * | |
750 | *************************************************/ | |
751 | ||
752 | /* | |
753 | Arguments: | |
754 | s first string | |
755 | t second string | |
756 | n number of characters to compare | |
757 | ||
758 | Returns: < 0, = 0, or > 0, according to the comparison | |
759 | */ | |
760 | ||
761 | int | |
1ba28e2b | 762 | strncmpic(const uschar *s, const uschar *t, int n) |
059ec3d9 PH |
763 | { |
764 | while (n--) | |
765 | { | |
766 | int c = tolower(*s++) - tolower(*t++); | |
767 | if (c) return c; | |
768 | } | |
769 | return 0; | |
770 | } | |
771 | ||
772 | ||
773 | /************************************************* | |
774 | * Case-independent strcmp() function * | |
775 | *************************************************/ | |
776 | ||
777 | /* | |
778 | Arguments: | |
779 | s first string | |
780 | t second string | |
781 | ||
782 | Returns: < 0, = 0, or > 0, according to the comparison | |
783 | */ | |
784 | ||
785 | int | |
1ba28e2b | 786 | strcmpic(const uschar *s, const uschar *t) |
059ec3d9 PH |
787 | { |
788 | while (*s != 0) | |
789 | { | |
790 | int c = tolower(*s++) - tolower(*t++); | |
791 | if (c != 0) return c; | |
792 | } | |
793 | return *t; | |
794 | } | |
795 | ||
796 | ||
797 | /************************************************* | |
798 | * Case-independent strstr() function * | |
799 | *************************************************/ | |
800 | ||
801 | /* The third argument specifies whether whitespace is required | |
802 | to follow the matched string. | |
803 | ||
804 | Arguments: | |
805 | s string to search | |
806 | t substring to search for | |
807 | space_follows if TRUE, match only if whitespace follows | |
808 | ||
809 | Returns: pointer to substring in string, or NULL if not found | |
810 | */ | |
811 | ||
812 | uschar * | |
813 | strstric(uschar *s, uschar *t, BOOL space_follows) | |
814 | { | |
815 | uschar *p = t; | |
816 | uschar *yield = NULL; | |
817 | int cl = tolower(*p); | |
818 | int cu = toupper(*p); | |
819 | ||
820 | while (*s) | |
821 | { | |
822 | if (*s == cl || *s == cu) | |
823 | { | |
824 | if (yield == NULL) yield = s; | |
825 | if (*(++p) == 0) | |
826 | { | |
827 | if (!space_follows || s[1] == ' ' || s[1] == '\n' ) return yield; | |
828 | yield = NULL; | |
829 | p = t; | |
830 | } | |
831 | cl = tolower(*p); | |
832 | cu = toupper(*p); | |
833 | s++; | |
834 | } | |
835 | else if (yield != NULL) | |
836 | { | |
837 | yield = NULL; | |
838 | p = t; | |
839 | cl = tolower(*p); | |
840 | cu = toupper(*p); | |
841 | } | |
842 | else s++; | |
843 | } | |
844 | return NULL; | |
845 | } | |
846 | ||
847 | ||
848 | ||
d12746bc JH |
849 | #ifdef COMPILE_UTILITY |
850 | /* Dummy version for this function; it should never be called */ | |
851 | static void | |
852 | gstring_grow(gstring * g, int p, int count) | |
853 | { | |
854 | assert(FALSE); | |
855 | } | |
856 | #endif | |
857 | ||
858 | ||
859 | ||
059ec3d9 PH |
860 | #ifndef COMPILE_UTILITY |
861 | /************************************************* | |
862 | * Get next string from separated list * | |
863 | *************************************************/ | |
864 | ||
865 | /* Leading and trailing space is removed from each item. The separator in the | |
866 | list is controlled by the int pointed to by the separator argument as follows: | |
867 | ||
ec95d1a6 PH |
868 | If the value is > 0 it is used as the separator. This is typically used for |
869 | sublists such as slash-separated options. The value is always a printing | |
870 | character. | |
871 | ||
872 | (If the value is actually > UCHAR_MAX there is only one item in the list. | |
059ec3d9 PH |
873 | This is used for some cases when called via functions that sometimes |
874 | plough through lists, and sometimes are given single items.) | |
059ec3d9 | 875 | |
ec95d1a6 PH |
876 | If the value is <= 0, the string is inspected for a leading <x, where x is an |
877 | ispunct() or an iscntrl() character. If found, x is used as the separator. If | |
878 | not found: | |
879 | ||
880 | (a) if separator == 0, ':' is used | |
881 | (b) if separator <0, -separator is used | |
882 | ||
883 | In all cases the value of the separator that is used is written back to the | |
884 | int so that it is used on subsequent calls as we progress through the list. | |
885 | ||
886 | A literal ispunct() separator can be represented in an item by doubling, but | |
887 | there is no way to include an iscntrl() separator as part of the data. | |
059ec3d9 PH |
888 | |
889 | Arguments: | |
890 | listptr points to a pointer to the current start of the list; the | |
891 | pointer gets updated to point after the end of the next item | |
892 | separator a pointer to the separator character in an int (see above) | |
893 | buffer where to put a copy of the next string in the list; or | |
894 | NULL if the next string is returned in new memory | |
895 | buflen when buffer is not NULL, the size of buffer; otherwise ignored | |
896 | ||
897 | Returns: pointer to buffer, containing the next substring, | |
898 | or NULL if no more substrings | |
899 | */ | |
900 | ||
901 | uschar * | |
55414b25 | 902 | string_nextinlist(const uschar **listptr, int *separator, uschar *buffer, int buflen) |
059ec3d9 | 903 | { |
55414b25 JH |
904 | int sep = *separator; |
905 | const uschar *s = *listptr; | |
ec95d1a6 | 906 | BOOL sep_is_special; |
059ec3d9 | 907 | |
8b455685 | 908 | if (!s) return NULL; |
ec95d1a6 PH |
909 | |
910 | /* This allows for a fixed specified separator to be an iscntrl() character, | |
911 | but at the time of implementation, this is never the case. However, it's best | |
912 | to be conservative. */ | |
913 | ||
914 | while (isspace(*s) && *s != sep) s++; | |
915 | ||
916 | /* A change of separator is permitted, so look for a leading '<' followed by an | |
917 | allowed character. */ | |
059ec3d9 PH |
918 | |
919 | if (sep <= 0) | |
920 | { | |
ec95d1a6 | 921 | if (*s == '<' && (ispunct(s[1]) || iscntrl(s[1]))) |
059ec3d9 PH |
922 | { |
923 | sep = s[1]; | |
b72f857f | 924 | if (*++s) ++s; |
ec95d1a6 | 925 | while (isspace(*s) && *s != sep) s++; |
059ec3d9 PH |
926 | } |
927 | else | |
8b455685 | 928 | sep = sep ? -sep : ':'; |
059ec3d9 PH |
929 | *separator = sep; |
930 | } | |
931 | ||
ec95d1a6 PH |
932 | /* An empty string has no list elements */ |
933 | ||
8b455685 | 934 | if (!*s) return NULL; |
059ec3d9 | 935 | |
ec95d1a6 PH |
936 | /* Note whether whether or not the separator is an iscntrl() character. */ |
937 | ||
938 | sep_is_special = iscntrl(sep); | |
939 | ||
059ec3d9 PH |
940 | /* Handle the case when a buffer is provided. */ |
941 | ||
617d3932 | 942 | if (buffer) |
059ec3d9 | 943 | { |
d4ff61d1 | 944 | int p = 0; |
8b455685 | 945 | for (; *s; s++) |
059ec3d9 | 946 | { |
ec95d1a6 | 947 | if (*s == sep && (*(++s) != sep || sep_is_special)) break; |
059ec3d9 PH |
948 | if (p < buflen - 1) buffer[p++] = *s; |
949 | } | |
950 | while (p > 0 && isspace(buffer[p-1])) p--; | |
8b455685 | 951 | buffer[p] = '\0'; |
059ec3d9 PH |
952 | } |
953 | ||
954 | /* Handle the case when a buffer is not provided. */ | |
955 | ||
956 | else | |
957 | { | |
55414b25 | 958 | const uschar *ss; |
acec9514 | 959 | gstring * g = NULL; |
ec95d1a6 | 960 | |
059ec3d9 | 961 | /* We know that *s != 0 at this point. However, it might be pointing to a |
ec95d1a6 PH |
962 | separator, which could indicate an empty string, or (if an ispunct() |
963 | character) could be doubled to indicate a separator character as data at the | |
964 | start of a string. Avoid getting working memory for an empty item. */ | |
059ec3d9 PH |
965 | |
966 | if (*s == sep) | |
967 | { | |
968 | s++; | |
ec95d1a6 PH |
969 | if (*s != sep || sep_is_special) |
970 | { | |
971 | *listptr = s; | |
972 | return string_copy(US""); | |
973 | } | |
059ec3d9 PH |
974 | } |
975 | ||
ec95d1a6 PH |
976 | /* Not an empty string; the first character is guaranteed to be a data |
977 | character. */ | |
978 | ||
979 | for (;;) | |
059ec3d9 | 980 | { |
8b455685 | 981 | for (ss = s + 1; *ss && *ss != sep; ss++) ; |
acec9514 | 982 | g = string_catn(g, s, ss-s); |
ec95d1a6 | 983 | s = ss; |
8b455685 | 984 | if (!*s || *++s != sep || sep_is_special) break; |
059ec3d9 | 985 | } |
acec9514 JH |
986 | while (g->ptr > 0 && isspace(g->s[g->ptr-1])) g->ptr--; |
987 | buffer = string_from_gstring(g); | |
617d3932 | 988 | gstring_reset_unused(g); |
059ec3d9 PH |
989 | } |
990 | ||
991 | /* Update the current pointer and return the new string */ | |
992 | ||
993 | *listptr = s; | |
994 | return buffer; | |
995 | } | |
059ec3d9 PH |
996 | |
997 | ||
4226691b JH |
998 | static const uschar * |
999 | Ustrnchr(const uschar * s, int c, unsigned * len) | |
1000 | { | |
1001 | unsigned siz = *len; | |
1002 | while (siz) | |
1003 | { | |
1004 | if (!*s) return NULL; | |
1005 | if (*s == c) | |
1006 | { | |
1007 | *len = siz; | |
1008 | return s; | |
1009 | } | |
1010 | s++; | |
1011 | siz--; | |
1012 | } | |
1013 | return NULL; | |
1014 | } | |
1015 | ||
1016 | ||
76146973 | 1017 | /************************************************ |
1d9ddac9 | 1018 | * Add element to separated list * |
76146973 | 1019 | ************************************************/ |
4226691b JH |
1020 | /* This function is used to build a list, returning an allocated null-terminated |
1021 | growable string. The given element has any embedded separator characters | |
76146973 JH |
1022 | doubled. |
1023 | ||
4226691b JH |
1024 | Despite having the same growable-string interface as string_cat() the list is |
1025 | always returned null-terminated. | |
1026 | ||
76146973 | 1027 | Arguments: |
acec9514 | 1028 | list expanding-string for the list that is being built, or NULL |
76146973 | 1029 | if this is a new list that has no contents yet |
4c04137d JS |
1030 | sep list separator character |
1031 | ele new element to be appended to the list | |
76146973 JH |
1032 | |
1033 | Returns: pointer to the start of the list, changed if copied for expansion. | |
1034 | */ | |
1035 | ||
acec9514 JH |
1036 | gstring * |
1037 | string_append_listele(gstring * list, uschar sep, const uschar * ele) | |
76146973 | 1038 | { |
76146973 JH |
1039 | uschar * sp; |
1040 | ||
acec9514 JH |
1041 | if (list && list->ptr) |
1042 | list = string_catn(list, &sep, 1); | |
76146973 | 1043 | |
e3dd1d67 | 1044 | while((sp = Ustrchr(ele, sep))) |
76146973 | 1045 | { |
acec9514 JH |
1046 | list = string_catn(list, ele, sp-ele+1); |
1047 | list = string_catn(list, &sep, 1); | |
76146973 JH |
1048 | ele = sp+1; |
1049 | } | |
acec9514 JH |
1050 | list = string_cat(list, ele); |
1051 | (void) string_from_gstring(list); | |
4226691b | 1052 | return list; |
76146973 | 1053 | } |
00ba27c5 JH |
1054 | |
1055 | ||
acec9514 JH |
1056 | gstring * |
1057 | string_append_listele_n(gstring * list, uschar sep, const uschar * ele, | |
1058 | unsigned len) | |
00ba27c5 | 1059 | { |
00ba27c5 JH |
1060 | const uschar * sp; |
1061 | ||
acec9514 JH |
1062 | if (list && list->ptr) |
1063 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1064 | |
1065 | while((sp = Ustrnchr(ele, sep, &len))) | |
1066 | { | |
acec9514 JH |
1067 | list = string_catn(list, ele, sp-ele+1); |
1068 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1069 | ele = sp+1; |
1070 | len--; | |
1071 | } | |
acec9514 JH |
1072 | list = string_catn(list, ele, len); |
1073 | (void) string_from_gstring(list); | |
4226691b | 1074 | return list; |
00ba27c5 | 1075 | } |
76146973 JH |
1076 | |
1077 | ||
059ec3d9 | 1078 | |
bce15b62 JH |
1079 | /* A slightly-bogus listmaker utility; the separator is a string so |
1080 | can be multiple chars - there is no checking for the element content | |
1081 | containing any of the separator. */ | |
1082 | ||
1083 | gstring * | |
1084 | string_append2_listele_n(gstring * list, const uschar * sepstr, | |
1085 | const uschar * ele, unsigned len) | |
1086 | { | |
bce15b62 JH |
1087 | if (list && list->ptr) |
1088 | list = string_cat(list, sepstr); | |
1089 | ||
1090 | list = string_catn(list, ele, len); | |
1091 | (void) string_from_gstring(list); | |
1092 | return list; | |
1093 | } | |
1094 | ||
1095 | ||
1096 | ||
acec9514 JH |
1097 | /************************************************/ |
1098 | /* Create a growable-string with some preassigned space */ | |
1099 | ||
1100 | gstring * | |
1101 | string_get(unsigned size) | |
1102 | { | |
1103 | gstring * g = store_get(sizeof(gstring) + size); | |
1104 | g->size = size; | |
1105 | g->ptr = 0; | |
1106 | g->s = US(g + 1); | |
1107 | return g; | |
1108 | } | |
1109 | ||
1110 | /* NUL-terminate the C string in the growable-string, and return it. */ | |
1111 | ||
1112 | uschar * | |
1113 | string_from_gstring(gstring * g) | |
1114 | { | |
1115 | if (!g) return NULL; | |
1116 | g->s[g->ptr] = '\0'; | |
1117 | return g->s; | |
1118 | } | |
1119 | ||
617d3932 JH |
1120 | void |
1121 | gstring_reset_unused(gstring * g) | |
1122 | { | |
1123 | store_reset(g->s + (g->size = g->ptr + 1)); | |
1124 | } | |
1125 | ||
059ec3d9 | 1126 | |
d12746bc JH |
1127 | /* Add more space to a growable-string. |
1128 | ||
1129 | Arguments: | |
1130 | g the growable-string | |
938593e9 JH |
1131 | p current end of data |
1132 | count amount to grow by | |
1133 | */ | |
1134 | ||
1135 | static void | |
acec9514 JH |
1136 | gstring_grow(gstring * g, int p, int count) |
1137 | { | |
1138 | int oldsize = g->size; | |
1139 | ||
1140 | /* Mostly, string_cat() is used to build small strings of a few hundred | |
1141 | characters at most. There are times, however, when the strings are very much | |
1142 | longer (for example, a lookup that returns a vast number of alias addresses). | |
1143 | To try to keep things reasonable, we use increments whose size depends on the | |
1144 | existing length of the string. */ | |
1145 | ||
1146 | unsigned inc = oldsize < 4096 ? 127 : 1023; | |
1147 | g->size = ((p + count + inc) & ~inc) + 1; | |
1148 | ||
1149 | /* Try to extend an existing allocation. If the result of calling | |
1150 | store_extend() is false, either there isn't room in the current memory block, | |
1151 | or this string is not the top item on the dynamic store stack. We then have | |
1152 | to get a new chunk of store and copy the old string. When building large | |
1153 | strings, it is helpful to call store_release() on the old string, to release | |
1154 | memory blocks that have become empty. (The block will be freed if the string | |
1155 | is at its start.) However, we can do this only if we know that the old string | |
1156 | was the last item on the dynamic memory stack. This is the case if it matches | |
1157 | store_last_get. */ | |
1158 | ||
1159 | if (!store_extend(g->s, oldsize, g->size)) | |
459fca58 | 1160 | g->s = store_newblock(g->s, g->size, p); |
acec9514 JH |
1161 | } |
1162 | ||
1163 | ||
1164 | ||
d12746bc JH |
1165 | /************************************************* |
1166 | * Add chars to string * | |
1167 | *************************************************/ | |
059ec3d9 PH |
1168 | /* This function is used when building up strings of unknown length. Room is |
1169 | always left for a terminating zero to be added to the string that is being | |
1170 | built. This function does not require the string that is being added to be NUL | |
1171 | terminated, because the number of characters to add is given explicitly. It is | |
1172 | sometimes called to extract parts of other strings. | |
1173 | ||
1174 | Arguments: | |
1175 | string points to the start of the string that is being built, or NULL | |
1176 | if this is a new string that has no contents yet | |
059ec3d9 PH |
1177 | s points to characters to add |
1178 | count count of characters to add; must not exceed the length of s, if s | |
42055a33 | 1179 | is a C string. |
059ec3d9 | 1180 | |
059ec3d9 PH |
1181 | Returns: pointer to the start of the string, changed if copied for expansion. |
1182 | Note that a NUL is not added, though space is left for one. This is | |
1183 | because string_cat() is often called multiple times to build up a | |
1184 | string - there's no point adding the NUL till the end. | |
a1b8a755 | 1185 | |
059ec3d9 | 1186 | */ |
96f5fe4c | 1187 | /* coverity[+alloc] */ |
059ec3d9 | 1188 | |
acec9514 JH |
1189 | gstring * |
1190 | string_catn(gstring * g, const uschar *s, int count) | |
059ec3d9 | 1191 | { |
acec9514 | 1192 | int p; |
059ec3d9 | 1193 | |
acec9514 | 1194 | if (!g) |
059ec3d9 | 1195 | { |
acec9514 JH |
1196 | unsigned inc = count < 4096 ? 127 : 1023; |
1197 | unsigned size = ((count + inc) & ~inc) + 1; | |
1198 | g = string_get(size); | |
059ec3d9 PH |
1199 | } |
1200 | ||
acec9514 JH |
1201 | p = g->ptr; |
1202 | if (p + count >= g->size) | |
1203 | gstring_grow(g, p, count); | |
1204 | ||
059ec3d9 PH |
1205 | /* Because we always specify the exact number of characters to copy, we can |
1206 | use memcpy(), which is likely to be more efficient than strncopy() because the | |
acec9514 | 1207 | latter has to check for zero bytes. */ |
059ec3d9 | 1208 | |
acec9514 JH |
1209 | memcpy(g->s + p, s, count); |
1210 | g->ptr = p + count; | |
1211 | return g; | |
059ec3d9 | 1212 | } |
acec9514 JH |
1213 | |
1214 | ||
1215 | gstring * | |
1216 | string_cat(gstring *string, const uschar *s) | |
c2f669a4 | 1217 | { |
acec9514 | 1218 | return string_catn(string, s, Ustrlen(s)); |
c2f669a4 | 1219 | } |
059ec3d9 PH |
1220 | |
1221 | ||
1222 | ||
059ec3d9 PH |
1223 | /************************************************* |
1224 | * Append strings to another string * | |
1225 | *************************************************/ | |
1226 | ||
1227 | /* This function can be used to build a string from many other strings. | |
1228 | It calls string_cat() to do the dirty work. | |
1229 | ||
1230 | Arguments: | |
acec9514 | 1231 | string expanding-string that is being built, or NULL |
059ec3d9 | 1232 | if this is a new string that has no contents yet |
059ec3d9 PH |
1233 | count the number of strings to append |
1234 | ... "count" uschar* arguments, which must be valid zero-terminated | |
1235 | C strings | |
1236 | ||
1237 | Returns: pointer to the start of the string, changed if copied for expansion. | |
1238 | The string is not zero-terminated - see string_cat() above. | |
1239 | */ | |
1240 | ||
acec9514 JH |
1241 | __inline__ gstring * |
1242 | string_append(gstring *string, int count, ...) | |
059ec3d9 PH |
1243 | { |
1244 | va_list ap; | |
059ec3d9 PH |
1245 | |
1246 | va_start(ap, count); | |
acec9514 | 1247 | while (count-- > 0) |
059ec3d9 PH |
1248 | { |
1249 | uschar *t = va_arg(ap, uschar *); | |
acec9514 | 1250 | string = string_cat(string, t); |
059ec3d9 PH |
1251 | } |
1252 | va_end(ap); | |
1253 | ||
1254 | return string; | |
1255 | } | |
1256 | #endif | |
1257 | ||
1258 | ||
1259 | ||
1260 | /************************************************* | |
1261 | * Format a string with length checks * | |
1262 | *************************************************/ | |
1263 | ||
1264 | /* This function is used to format a string with checking of the length of the | |
1265 | output for all conversions. It protects Exim from absent-mindedness when | |
1266 | calling functions like debug_printf and string_sprintf, and elsewhere. There | |
1267 | are two different entry points to what is actually the same function, depending | |
1268 | on whether the variable length list of data arguments are given explicitly or | |
1269 | as a va_list item. | |
1270 | ||
1271 | The formats are the usual printf() ones, with some omissions (never used) and | |
c0b9d3e8 | 1272 | three additions for strings: %S forces lower case, %T forces upper case, and |
acec9514 | 1273 | %#s or %#S prints nothing for a NULL string. Without the # "NULL" is printed |
c0b9d3e8 JH |
1274 | (useful in debugging). There is also the addition of %D and %M, which insert |
1275 | the date in the form used for datestamped log files. | |
059ec3d9 PH |
1276 | |
1277 | Arguments: | |
1278 | buffer a buffer in which to put the formatted string | |
1279 | buflen the length of the buffer | |
1280 | format the format string - deliberately char * and not uschar * | |
1281 | ... or ap variable list of supplementary arguments | |
1282 | ||
1283 | Returns: TRUE if the result fitted in the buffer | |
1284 | */ | |
1285 | ||
1286 | BOOL | |
d12746bc | 1287 | string_format(uschar * buffer, int buflen, const char * format, ...) |
059ec3d9 | 1288 | { |
d12746bc | 1289 | gstring g = { .size = buflen, .ptr = 0, .s = buffer }, *gp; |
059ec3d9 PH |
1290 | va_list ap; |
1291 | va_start(ap, format); | |
d12746bc | 1292 | gp = string_vformat(&g, FALSE, format, ap); |
059ec3d9 | 1293 | va_end(ap); |
d12746bc JH |
1294 | g.s[g.ptr] = '\0'; |
1295 | return !!gp; | |
059ec3d9 PH |
1296 | } |
1297 | ||
1298 | ||
d12746bc JH |
1299 | |
1300 | ||
1301 | ||
1302 | /* Bulid or append to a growing-string, sprintf-style. | |
1303 | ||
1304 | If the "extend" argument is true, the string passed in can be NULL, | |
1305 | empty, or non-empty. | |
1306 | ||
1307 | If the "extend" argument is false, the string passed in may not be NULL, | |
1308 | will not be grown, and is usable in the original place after return. | |
1309 | The return value can be NULL to signify overflow. | |
1310 | ||
1311 | Returns the possibly-new (if copy for growth was needed) string, | |
1312 | not nul-terminated. | |
1313 | */ | |
1314 | ||
1315 | gstring * | |
1316 | string_vformat(gstring * g, BOOL extend, const char *format, va_list ap) | |
059ec3d9 | 1317 | { |
d12746bc JH |
1318 | enum ltypes { L_NORMAL=1, L_SHORT=2, L_LONG=3, L_LONGLONG=4, L_LONGDOUBLE=5, L_SIZE=6 }; |
1319 | ||
1320 | int width, precision, off, lim; | |
1321 | const char * fp = format; /* Deliberately not unsigned */ | |
b1c749bb | 1322 | |
d12746bc JH |
1323 | string_datestamp_offset = -1; /* Datestamp not inserted */ |
1324 | string_datestamp_length = 0; /* Datestamp not inserted */ | |
1325 | string_datestamp_type = 0; /* Datestamp not inserted */ | |
059ec3d9 | 1326 | |
d12746bc JH |
1327 | #ifdef COMPILE_UTILITY |
1328 | assert(!extend); | |
1329 | assert(g); | |
1330 | #else | |
1331 | ||
1332 | /* Ensure we have a string, to save on checking later */ | |
1333 | if (!g) g = string_get(16); | |
1334 | #endif /*!COMPILE_UTILITY*/ | |
1335 | ||
1336 | lim = g->size - 1; /* leave one for a nul */ | |
1337 | off = g->ptr; /* remember initial offset in gstring */ | |
059ec3d9 PH |
1338 | |
1339 | /* Scan the format and handle the insertions */ | |
1340 | ||
d12746bc | 1341 | while (*fp) |
059ec3d9 | 1342 | { |
b1c749bb | 1343 | int length = L_NORMAL; |
059ec3d9 PH |
1344 | int *nptr; |
1345 | int slen; | |
d12746bc JH |
1346 | const char *null = "NULL"; /* ) These variables */ |
1347 | const char *item_start, *s; /* ) are deliberately */ | |
1348 | char newformat[16]; /* ) not unsigned */ | |
1349 | char * gp = CS g->s + g->ptr; /* ) */ | |
059ec3d9 PH |
1350 | |
1351 | /* Non-% characters just get copied verbatim */ | |
1352 | ||
1353 | if (*fp != '%') | |
1354 | { | |
d12746bc JH |
1355 | /* Avoid string_copyn() due to COMPILE_UTILITY */ |
1356 | if (g->ptr >= lim - 1) | |
1100a343 JH |
1357 | { |
1358 | if (!extend) return NULL; | |
1359 | gstring_grow(g, g->ptr, 1); | |
1360 | lim = g->size - 1; | |
1361 | } | |
d12746bc | 1362 | g->s[g->ptr++] = (uschar) *fp++; |
059ec3d9 PH |
1363 | continue; |
1364 | } | |
1365 | ||
1366 | /* Deal with % characters. Pick off the width and precision, for checking | |
1367 | strings, skipping over the flag and modifier characters. */ | |
1368 | ||
1369 | item_start = fp; | |
1370 | width = precision = -1; | |
1371 | ||
1372 | if (strchr("-+ #0", *(++fp)) != NULL) | |
1373 | { | |
1374 | if (*fp == '#') null = ""; | |
1375 | fp++; | |
1376 | } | |
1377 | ||
1378 | if (isdigit((uschar)*fp)) | |
1379 | { | |
1380 | width = *fp++ - '0'; | |
1381 | while (isdigit((uschar)*fp)) width = width * 10 + *fp++ - '0'; | |
1382 | } | |
1383 | else if (*fp == '*') | |
1384 | { | |
1385 | width = va_arg(ap, int); | |
1386 | fp++; | |
1387 | } | |
1388 | ||
1389 | if (*fp == '.') | |
059ec3d9 PH |
1390 | if (*(++fp) == '*') |
1391 | { | |
1392 | precision = va_arg(ap, int); | |
1393 | fp++; | |
1394 | } | |
1395 | else | |
d12746bc JH |
1396 | for (precision = 0; isdigit((uschar)*fp); fp++) |
1397 | precision = precision*10 + *fp - '0'; | |
059ec3d9 | 1398 | |
91a246f6 | 1399 | /* Skip over 'h', 'L', 'l', 'll' and 'z', remembering the item length */ |
b1c749bb PH |
1400 | |
1401 | if (*fp == 'h') | |
1402 | { fp++; length = L_SHORT; } | |
1403 | else if (*fp == 'L') | |
1404 | { fp++; length = L_LONGDOUBLE; } | |
1405 | else if (*fp == 'l') | |
b1c749bb | 1406 | if (fp[1] == 'l') |
d12746bc | 1407 | { fp += 2; length = L_LONGLONG; } |
b1c749bb | 1408 | else |
d12746bc | 1409 | { fp++; length = L_LONG; } |
91a246f6 PP |
1410 | else if (*fp == 'z') |
1411 | { fp++; length = L_SIZE; } | |
059ec3d9 PH |
1412 | |
1413 | /* Handle each specific format type. */ | |
1414 | ||
1415 | switch (*fp++) | |
1416 | { | |
1417 | case 'n': | |
d12746bc JH |
1418 | nptr = va_arg(ap, int *); |
1419 | *nptr = g->ptr - off; | |
1420 | break; | |
059ec3d9 PH |
1421 | |
1422 | case 'd': | |
1423 | case 'o': | |
1424 | case 'u': | |
1425 | case 'x': | |
1426 | case 'X': | |
d12746bc JH |
1427 | width = length > L_LONG ? 24 : 12; |
1428 | if (g->ptr >= lim - width) | |
1100a343 JH |
1429 | { |
1430 | if (!extend) return NULL; | |
1431 | gstring_grow(g, g->ptr, width); | |
1432 | lim = g->size - 1; | |
1433 | gp = CS g->s + g->ptr; | |
1434 | } | |
d12746bc JH |
1435 | strncpy(newformat, item_start, fp - item_start); |
1436 | newformat[fp - item_start] = 0; | |
b1c749bb | 1437 | |
d12746bc JH |
1438 | /* Short int is promoted to int when passing through ..., so we must use |
1439 | int for va_arg(). */ | |
b1c749bb | 1440 | |
d12746bc JH |
1441 | switch(length) |
1442 | { | |
1443 | case L_SHORT: | |
1444 | case L_NORMAL: | |
1445 | g->ptr += sprintf(gp, newformat, va_arg(ap, int)); break; | |
1446 | case L_LONG: | |
1447 | g->ptr += sprintf(gp, newformat, va_arg(ap, long int)); break; | |
1448 | case L_LONGLONG: | |
1449 | g->ptr += sprintf(gp, newformat, va_arg(ap, LONGLONG_T)); break; | |
1450 | case L_SIZE: | |
1451 | g->ptr += sprintf(gp, newformat, va_arg(ap, size_t)); break; | |
1452 | } | |
1453 | break; | |
059ec3d9 PH |
1454 | |
1455 | case 'p': | |
2e8db779 JH |
1456 | { |
1457 | void * ptr; | |
d12746bc | 1458 | if (g->ptr >= lim - 24) |
1100a343 JH |
1459 | { |
1460 | if (!extend) return NULL; | |
1461 | gstring_grow(g, g->ptr, 24); | |
1462 | lim = g->size - 1; | |
1463 | gp = CS g->s + g->ptr; | |
1464 | } | |
81f358da JH |
1465 | /* sprintf() saying "(nil)" for a null pointer seems unreliable. |
1466 | Handle it explicitly. */ | |
2e8db779 JH |
1467 | if ((ptr = va_arg(ap, void *))) |
1468 | { | |
1469 | strncpy(newformat, item_start, fp - item_start); | |
1470 | newformat[fp - item_start] = 0; | |
d12746bc | 1471 | g->ptr += sprintf(gp, newformat, ptr); |
2e8db779 JH |
1472 | } |
1473 | else | |
d12746bc | 1474 | g->ptr += sprintf(gp, "(nil)"); |
2e8db779 | 1475 | } |
059ec3d9 PH |
1476 | break; |
1477 | ||
1478 | /* %f format is inherently insecure if the numbers that it may be | |
870f6ba8 TF |
1479 | handed are unknown (e.g. 1e300). However, in Exim, %f is used for |
1480 | printing load averages, and these are actually stored as integers | |
1481 | (load average * 1000) so the size of the numbers is constrained. | |
1482 | It is also used for formatting sending rates, where the simplicity | |
1483 | of the format prevents overflow. */ | |
059ec3d9 PH |
1484 | |
1485 | case 'f': | |
1486 | case 'e': | |
1487 | case 'E': | |
1488 | case 'g': | |
1489 | case 'G': | |
d12746bc JH |
1490 | if (precision < 0) precision = 6; |
1491 | if (g->ptr >= lim - precision - 8) | |
1100a343 JH |
1492 | { |
1493 | if (!extend) return NULL; | |
1494 | gstring_grow(g, g->ptr, precision+8); | |
1495 | lim = g->size - 1; | |
1496 | gp = CS g->s + g->ptr; | |
1497 | } | |
d12746bc JH |
1498 | strncpy(newformat, item_start, fp - item_start); |
1499 | newformat[fp-item_start] = 0; | |
1500 | if (length == L_LONGDOUBLE) | |
1501 | g->ptr += sprintf(gp, newformat, va_arg(ap, long double)); | |
1502 | else | |
1503 | g->ptr += sprintf(gp, newformat, va_arg(ap, double)); | |
1504 | break; | |
059ec3d9 PH |
1505 | |
1506 | /* String types */ | |
1507 | ||
1508 | case '%': | |
d12746bc | 1509 | if (g->ptr >= lim - 1) |
1100a343 JH |
1510 | { |
1511 | if (!extend) return NULL; | |
1512 | gstring_grow(g, g->ptr, 1); | |
1513 | lim = g->size - 1; | |
1514 | } | |
d12746bc JH |
1515 | g->s[g->ptr++] = (uschar) '%'; |
1516 | break; | |
059ec3d9 PH |
1517 | |
1518 | case 'c': | |
d12746bc | 1519 | if (g->ptr >= lim - 1) |
1100a343 JH |
1520 | { |
1521 | if (!extend) return NULL; | |
1522 | gstring_grow(g, g->ptr, 1); | |
1523 | lim = g->size - 1; | |
1524 | } | |
d12746bc JH |
1525 | g->s[g->ptr++] = (uschar) va_arg(ap, int); |
1526 | break; | |
059ec3d9 | 1527 | |
f1e5fef5 | 1528 | case 'D': /* Insert daily datestamp for log file names */ |
d12746bc JH |
1529 | s = CS tod_stamp(tod_log_datestamp_daily); |
1530 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1531 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1532 | string_datestamp_type = tod_log_datestamp_daily; | |
1533 | slen = string_datestamp_length; | |
1534 | goto INSERT_STRING; | |
f1e5fef5 PP |
1535 | |
1536 | case 'M': /* Insert monthly datestamp for log file names */ | |
d12746bc JH |
1537 | s = CS tod_stamp(tod_log_datestamp_monthly); |
1538 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1539 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1540 | string_datestamp_type = tod_log_datestamp_monthly; | |
1541 | slen = string_datestamp_length; | |
1542 | goto INSERT_STRING; | |
059ec3d9 PH |
1543 | |
1544 | case 's': | |
1545 | case 'S': /* Forces *lower* case */ | |
c0b9d3e8 | 1546 | case 'T': /* Forces *upper* case */ |
d12746bc | 1547 | s = va_arg(ap, char *); |
059ec3d9 | 1548 | |
d12746bc JH |
1549 | if (!s) s = null; |
1550 | slen = Ustrlen(s); | |
059ec3d9 | 1551 | |
f1e5fef5 PP |
1552 | INSERT_STRING: /* Come to from %D or %M above */ |
1553 | ||
059ec3d9 | 1554 | { |
d12746bc | 1555 | BOOL truncated = FALSE; |
059ec3d9 | 1556 | |
d12746bc JH |
1557 | /* If the width is specified, check that there is a precision |
1558 | set; if not, set it to the width to prevent overruns of long | |
1559 | strings. */ | |
059ec3d9 | 1560 | |
d12746bc JH |
1561 | if (width >= 0) |
1562 | { | |
1563 | if (precision < 0) precision = width; | |
1564 | } | |
059ec3d9 | 1565 | |
d12746bc JH |
1566 | /* If a width is not specified and the precision is specified, set |
1567 | the width to the precision, or the string length if shorted. */ | |
059ec3d9 | 1568 | |
d12746bc JH |
1569 | else if (precision >= 0) |
1570 | width = precision < slen ? precision : slen; | |
059ec3d9 | 1571 | |
d12746bc | 1572 | /* If neither are specified, set them both to the string length. */ |
059ec3d9 | 1573 | |
d12746bc JH |
1574 | else |
1575 | width = precision = slen; | |
1576 | ||
1577 | if (!extend) | |
1578 | { | |
1579 | if (g->ptr == lim) return NULL; | |
1580 | if (g->ptr >= lim - width) | |
1581 | { | |
1582 | truncated = TRUE; | |
1583 | width = precision = lim - g->ptr - 1; | |
1584 | if (width < 0) width = 0; | |
1585 | if (precision < 0) precision = 0; | |
1586 | } | |
1587 | } | |
1588 | else if (g->ptr >= lim - width) | |
1100a343 JH |
1589 | { |
1590 | gstring_grow(g, g->ptr, width - (lim - g->ptr)); | |
1591 | lim = g->size - 1; | |
1592 | gp = CS g->s + g->ptr; | |
1593 | } | |
d12746bc JH |
1594 | |
1595 | g->ptr += sprintf(gp, "%*.*s", width, precision, s); | |
1596 | if (fp[-1] == 'S') | |
1597 | while (*gp) { *gp = tolower(*gp); gp++; } | |
1598 | else if (fp[-1] == 'T') | |
1599 | while (*gp) { *gp = toupper(*gp); gp++; } | |
1600 | ||
1601 | if (truncated) return NULL; | |
1602 | break; | |
059ec3d9 | 1603 | } |
059ec3d9 PH |
1604 | |
1605 | /* Some things are never used in Exim; also catches junk. */ | |
1606 | ||
1607 | default: | |
d12746bc JH |
1608 | strncpy(newformat, item_start, fp - item_start); |
1609 | newformat[fp-item_start] = 0; | |
1610 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "string_format: unsupported type " | |
1611 | "in \"%s\" in \"%s\"", newformat, format); | |
1612 | break; | |
059ec3d9 PH |
1613 | } |
1614 | } | |
1615 | ||
d12746bc JH |
1616 | return g; |
1617 | } | |
059ec3d9 | 1618 | |
059ec3d9 | 1619 | |
d12746bc JH |
1620 | |
1621 | #ifndef COMPILE_UTILITY | |
1622 | ||
1623 | gstring * | |
1624 | string_fmt_append(gstring * g, const char *format, ...) | |
1625 | { | |
1626 | va_list ap; | |
1627 | va_start(ap, format); | |
1628 | g = string_vformat(g, TRUE, format, ap); | |
1629 | va_end(ap); | |
1630 | return g; | |
059ec3d9 PH |
1631 | } |
1632 | ||
1633 | ||
1634 | ||
059ec3d9 PH |
1635 | /************************************************* |
1636 | * Generate an "open failed" message * | |
1637 | *************************************************/ | |
1638 | ||
1639 | /* This function creates a message after failure to open a file. It includes a | |
1640 | string supplied as data, adds the strerror() text, and if the failure was | |
1641 | "Permission denied", reads and includes the euid and egid. | |
1642 | ||
1643 | Arguments: | |
1644 | eno the value of errno after the failure | |
1645 | format a text format string - deliberately not uschar * | |
1646 | ... arguments for the format string | |
1647 | ||
1648 | Returns: a message, in dynamic store | |
1649 | */ | |
1650 | ||
1651 | uschar * | |
1ba28e2b | 1652 | string_open_failed(int eno, const char *format, ...) |
059ec3d9 PH |
1653 | { |
1654 | va_list ap; | |
d12746bc | 1655 | gstring * g = string_get(1024); |
059ec3d9 | 1656 | |
d12746bc | 1657 | g = string_catn(g, US"failed to open ", 15); |
059ec3d9 PH |
1658 | |
1659 | /* Use the checked formatting routine to ensure that the buffer | |
1660 | does not overflow. It should not, since this is called only for internally | |
1661 | specified messages. If it does, the message just gets truncated, and there | |
1662 | doesn't seem much we can do about that. */ | |
1663 | ||
d12746bc JH |
1664 | va_start(ap, format); |
1665 | (void) string_vformat(g, FALSE, format, ap); | |
1666 | string_from_gstring(g); | |
1667 | gstring_reset_unused(g); | |
cb570b5e | 1668 | va_end(ap); |
059ec3d9 | 1669 | |
d12746bc JH |
1670 | return eno == EACCES |
1671 | ? string_sprintf("%s: %s (euid=%ld egid=%ld)", g->s, strerror(eno), | |
1672 | (long int)geteuid(), (long int)getegid()) | |
1673 | : string_sprintf("%s: %s", g->s, strerror(eno)); | |
059ec3d9 PH |
1674 | } |
1675 | #endif /* COMPILE_UTILITY */ | |
1676 | ||
1677 | ||
1678 | ||
059ec3d9 PH |
1679 | |
1680 | ||
bc3c7bb7 HSHR |
1681 | #ifndef COMPILE_UTILITY |
1682 | /* qsort(3), currently used to sort the environment variables | |
1683 | for -bP environment output, needs a function to compare two pointers to string | |
1684 | pointers. Here it is. */ | |
1685 | ||
1686 | int | |
84bbb4d8 | 1687 | string_compare_by_pointer(const void *a, const void *b) |
bc3c7bb7 | 1688 | { |
35a5627d | 1689 | return Ustrcmp(* CUSS a, * CUSS b); |
bc3c7bb7 HSHR |
1690 | } |
1691 | #endif /* COMPILE_UTILITY */ | |
059ec3d9 PH |
1692 | |
1693 | ||
1694 | ||
d12746bc | 1695 | |
059ec3d9 PH |
1696 | /************************************************* |
1697 | ************************************************** | |
1698 | * Stand-alone test program * | |
1699 | ************************************************** | |
1700 | *************************************************/ | |
1701 | ||
1702 | #ifdef STAND_ALONE | |
1703 | int main(void) | |
1704 | { | |
1705 | uschar buffer[256]; | |
1706 | ||
1707 | printf("Testing is_ip_address\n"); | |
1708 | ||
1709 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1710 | { | |
1711 | int offset; | |
1712 | buffer[Ustrlen(buffer) - 1] = 0; | |
1713 | printf("%d\n", string_is_ip_address(buffer, NULL)); | |
1714 | printf("%d %d %s\n", string_is_ip_address(buffer, &offset), offset, buffer); | |
1715 | } | |
1716 | ||
1717 | printf("Testing string_nextinlist\n"); | |
1718 | ||
1719 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1720 | { | |
1721 | uschar *list = buffer; | |
1722 | uschar *lp1, *lp2; | |
1723 | uschar item[256]; | |
1724 | int sep1 = 0; | |
1725 | int sep2 = 0; | |
1726 | ||
1727 | if (*list == '<') | |
1728 | { | |
1729 | sep1 = sep2 = list[1]; | |
1730 | list += 2; | |
1731 | } | |
1732 | ||
1733 | lp1 = lp2 = list; | |
1734 | for (;;) | |
1735 | { | |
1736 | uschar *item1 = string_nextinlist(&lp1, &sep1, item, sizeof(item)); | |
1737 | uschar *item2 = string_nextinlist(&lp2, &sep2, NULL, 0); | |
1738 | ||
1739 | if (item1 == NULL && item2 == NULL) break; | |
1740 | if (item == NULL || item2 == NULL || Ustrcmp(item1, item2) != 0) | |
1741 | { | |
1742 | printf("***ERROR\nitem1=\"%s\"\nitem2=\"%s\"\n", | |
1743 | (item1 == NULL)? "NULL" : CS item1, | |
1744 | (item2 == NULL)? "NULL" : CS item2); | |
1745 | break; | |
1746 | } | |
1747 | else printf(" \"%s\"\n", CS item1); | |
1748 | } | |
1749 | } | |
1750 | ||
1751 | /* This is a horrible lash-up, but it serves its purpose. */ | |
1752 | ||
1753 | printf("Testing string_format\n"); | |
1754 | ||
1755 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1756 | { | |
1757 | void *args[3]; | |
ed72ace5 | 1758 | long long llargs[3]; |
059ec3d9 PH |
1759 | double dargs[3]; |
1760 | int dflag = 0; | |
ed72ace5 | 1761 | int llflag = 0; |
059ec3d9 PH |
1762 | int n = 0; |
1763 | int count; | |
1764 | int countset = 0; | |
1765 | uschar format[256]; | |
1766 | uschar outbuf[256]; | |
1767 | uschar *s; | |
1768 | buffer[Ustrlen(buffer) - 1] = 0; | |
1769 | ||
1770 | s = Ustrchr(buffer, ','); | |
1771 | if (s == NULL) s = buffer + Ustrlen(buffer); | |
1772 | ||
1773 | Ustrncpy(format, buffer, s - buffer); | |
1774 | format[s-buffer] = 0; | |
1775 | ||
1776 | if (*s == ',') s++; | |
1777 | ||
1778 | while (*s != 0) | |
1779 | { | |
1780 | uschar *ss = s; | |
1781 | s = Ustrchr(ss, ','); | |
1782 | if (s == NULL) s = ss + Ustrlen(ss); | |
1783 | ||
1784 | if (isdigit(*ss)) | |
1785 | { | |
1786 | Ustrncpy(outbuf, ss, s-ss); | |
1787 | if (Ustrchr(outbuf, '.') != NULL) | |
1788 | { | |
1789 | dflag = 1; | |
1790 | dargs[n++] = Ustrtod(outbuf, NULL); | |
1791 | } | |
ed72ace5 PH |
1792 | else if (Ustrstr(outbuf, "ll") != NULL) |
1793 | { | |
1794 | llflag = 1; | |
1795 | llargs[n++] = strtoull(CS outbuf, NULL, 10); | |
1796 | } | |
059ec3d9 PH |
1797 | else |
1798 | { | |
1799 | args[n++] = (void *)Uatoi(outbuf); | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | else if (Ustrcmp(ss, "*") == 0) | |
1804 | { | |
1805 | args[n++] = (void *)(&count); | |
1806 | countset = 1; | |
1807 | } | |
1808 | ||
1809 | else | |
1810 | { | |
1811 | uschar *sss = malloc(s - ss + 1); | |
1812 | Ustrncpy(sss, ss, s-ss); | |
1813 | args[n++] = sss; | |
1814 | } | |
1815 | ||
1816 | if (*s == ',') s++; | |
1817 | } | |
1818 | ||
ed72ace5 PH |
1819 | if (!dflag && !llflag) |
1820 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1821 | args[0], args[1], args[2])? "True" : "False"); | |
1822 | ||
1823 | else if (dflag) | |
1824 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1825 | dargs[0], dargs[1], dargs[2])? "True" : "False"); | |
059ec3d9 PH |
1826 | |
1827 | else printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
ed72ace5 | 1828 | llargs[0], llargs[1], llargs[2])? "True" : "False"); |
059ec3d9 PH |
1829 | |
1830 | printf("%s\n", CS outbuf); | |
1831 | if (countset) printf("count=%d\n", count); | |
1832 | } | |
1833 | ||
1834 | return 0; | |
1835 | } | |
1836 | #endif | |
1837 | ||
1838 | /* End of string.c */ |