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 | { | |
f3ebb786 | 170 | if (size == 0) Ustrcpy(buffer, US" "); |
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 | |
c3aefacc HSHR |
225 | If the backslash is the last character in the string, it |
226 | is not interpreted. | |
059ec3d9 PH |
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 | 238 | ch = *(++p); |
c3aefacc | 239 | if (ch == '\0') return **pp; |
059ec3d9 PH |
240 | if (isdigit(ch) && ch != '8' && ch != '9') |
241 | { | |
242 | ch -= '0'; | |
243 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
244 | { | |
245 | ch = ch * 8 + *(++p) - '0'; | |
246 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
247 | ch = ch * 8 + *(++p) - '0'; | |
248 | } | |
249 | } | |
250 | else switch(ch) | |
251 | { | |
c7396ac5 PP |
252 | case 'b': ch = '\b'; break; |
253 | case 'f': ch = '\f'; break; | |
059ec3d9 PH |
254 | case 'n': ch = '\n'; break; |
255 | case 'r': ch = '\r'; break; | |
256 | case 't': ch = '\t'; break; | |
c7396ac5 | 257 | case 'v': ch = '\v'; break; |
059ec3d9 PH |
258 | case 'x': |
259 | ch = 0; | |
260 | if (isxdigit(p[1])) | |
261 | { | |
262 | ch = ch * 16 + | |
263 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
264 | if (isxdigit(p[1])) ch = ch * 16 + | |
265 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
266 | } | |
267 | break; | |
268 | } | |
269 | *pp = p; | |
270 | return ch; | |
271 | } | |
059ec3d9 PH |
272 | |
273 | ||
274 | ||
275 | #ifndef COMPILE_UTILITY | |
276 | /************************************************* | |
277 | * Ensure string is printable * | |
278 | *************************************************/ | |
279 | ||
280 | /* This function is called for critical strings. It checks for any | |
281 | non-printing characters, and if any are found, it makes a new copy | |
282 | of the string with suitable escape sequences. It is most often called by the | |
283 | macro string_printing(), which sets allow_tab TRUE. | |
284 | ||
285 | Arguments: | |
286 | s the input string | |
287 | allow_tab TRUE to allow tab as a printing character | |
288 | ||
289 | Returns: string with non-printers encoded as printing sequences | |
290 | */ | |
291 | ||
55414b25 JH |
292 | const uschar * |
293 | string_printing2(const uschar *s, BOOL allow_tab) | |
059ec3d9 PH |
294 | { |
295 | int nonprintcount = 0; | |
296 | int length = 0; | |
55414b25 | 297 | const uschar *t = s; |
059ec3d9 PH |
298 | uschar *ss, *tt; |
299 | ||
300 | while (*t != 0) | |
301 | { | |
302 | int c = *t++; | |
303 | if (!mac_isprint(c) || (!allow_tab && c == '\t')) nonprintcount++; | |
304 | length++; | |
305 | } | |
306 | ||
307 | if (nonprintcount == 0) return s; | |
308 | ||
309 | /* Get a new block of store guaranteed big enough to hold the | |
310 | expanded string. */ | |
311 | ||
f3ebb786 | 312 | ss = store_get(length + nonprintcount * 3 + 1, is_tainted(s)); |
059ec3d9 | 313 | |
4c04137d | 314 | /* Copy everything, escaping non printers. */ |
059ec3d9 PH |
315 | |
316 | t = s; | |
317 | tt = ss; | |
318 | ||
319 | while (*t != 0) | |
320 | { | |
321 | int c = *t; | |
322 | if (mac_isprint(c) && (allow_tab || c != '\t')) *tt++ = *t++; else | |
323 | { | |
324 | *tt++ = '\\'; | |
325 | switch (*t) | |
326 | { | |
327 | case '\n': *tt++ = 'n'; break; | |
328 | case '\r': *tt++ = 'r'; break; | |
329 | case '\b': *tt++ = 'b'; break; | |
330 | case '\v': *tt++ = 'v'; break; | |
331 | case '\f': *tt++ = 'f'; break; | |
332 | case '\t': *tt++ = 't'; break; | |
333 | default: sprintf(CS tt, "%03o", *t); tt += 3; break; | |
334 | } | |
335 | t++; | |
336 | } | |
337 | } | |
338 | *tt = 0; | |
c7396ac5 PP |
339 | return ss; |
340 | } | |
79fe97d8 PP |
341 | #endif /* COMPILE_UTILITY */ |
342 | ||
c7396ac5 PP |
343 | /************************************************* |
344 | * Undo printing escapes in string * | |
345 | *************************************************/ | |
346 | ||
347 | /* This function is the reverse of string_printing2. It searches for | |
348 | backslash characters and if any are found, it makes a new copy of the | |
349 | string with escape sequences parsed. Otherwise it returns the original | |
350 | string. | |
351 | ||
352 | Arguments: | |
353 | s the input string | |
354 | ||
355 | Returns: string with printing escapes parsed back | |
356 | */ | |
357 | ||
358 | uschar * | |
359 | string_unprinting(uschar *s) | |
360 | { | |
361 | uschar *p, *q, *r, *ss; | |
362 | int len, off; | |
363 | ||
364 | p = Ustrchr(s, '\\'); | |
365 | if (!p) return s; | |
366 | ||
367 | len = Ustrlen(s) + 1; | |
f3ebb786 | 368 | ss = store_get(len, is_tainted(s)); |
c7396ac5 PP |
369 | |
370 | q = ss; | |
371 | off = p - s; | |
372 | if (off) | |
373 | { | |
374 | memcpy(q, s, off); | |
375 | q += off; | |
376 | } | |
377 | ||
378 | while (*p) | |
379 | { | |
380 | if (*p == '\\') | |
381 | { | |
55414b25 | 382 | *q++ = string_interpret_escape((const uschar **)&p); |
823ad74f | 383 | p++; |
c7396ac5 PP |
384 | } |
385 | else | |
386 | { | |
387 | r = Ustrchr(p, '\\'); | |
388 | if (!r) | |
389 | { | |
390 | off = Ustrlen(p); | |
391 | memcpy(q, p, off); | |
392 | p += off; | |
393 | q += off; | |
394 | break; | |
395 | } | |
396 | else | |
397 | { | |
398 | off = r - p; | |
399 | memcpy(q, p, off); | |
400 | q += off; | |
401 | p = r; | |
402 | } | |
403 | } | |
404 | } | |
405 | *q = '\0'; | |
406 | ||
059ec3d9 PH |
407 | return ss; |
408 | } | |
059ec3d9 PH |
409 | |
410 | ||
411 | ||
412 | ||
bf13aee1 JH |
413 | #if (defined(HAVE_LOCAL_SCAN) || defined(EXPAND_DLFUNC)) \ |
414 | && !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY) | |
059ec3d9 PH |
415 | /************************************************* |
416 | * Copy and save string * | |
417 | *************************************************/ | |
418 | ||
f3ebb786 | 419 | /* |
059ec3d9 | 420 | Argument: string to copy |
f3ebb786 | 421 | Returns: copy of string in new store with the same taint status |
059ec3d9 PH |
422 | */ |
423 | ||
424 | uschar * | |
e59797e3 | 425 | string_copy_function(const uschar *s) |
059ec3d9 | 426 | { |
f3ebb786 JH |
427 | return string_copy_taint(s, is_tainted(s)); |
428 | } | |
429 | ||
430 | /* This function assumes that memcpy() is faster than strcpy(). | |
431 | As above, but explicitly specifying the result taint status | |
432 | */ | |
433 | ||
434 | uschar * | |
d48326c0 | 435 | string_copy_taint_function(const uschar * s, BOOL tainted) |
f3ebb786 | 436 | { |
059ec3d9 | 437 | int len = Ustrlen(s) + 1; |
f3ebb786 | 438 | uschar *ss = store_get(len, tainted); |
059ec3d9 PH |
439 | memcpy(ss, s, len); |
440 | return ss; | |
441 | } | |
442 | ||
443 | ||
f3ebb786 | 444 | |
059ec3d9 PH |
445 | /************************************************* |
446 | * Copy and save string, given length * | |
447 | *************************************************/ | |
448 | ||
449 | /* It is assumed the data contains no zeros. A zero is added | |
450 | onto the end. | |
451 | ||
452 | Arguments: | |
453 | s string to copy | |
454 | n number of characters | |
455 | ||
456 | Returns: copy of string in new store | |
457 | */ | |
458 | ||
459 | uschar * | |
e59797e3 | 460 | string_copyn_function(const uschar *s, int n) |
059ec3d9 | 461 | { |
f3ebb786 | 462 | uschar *ss = store_get(n + 1, is_tainted(s)); |
059ec3d9 PH |
463 | Ustrncpy(ss, s, n); |
464 | ss[n] = 0; | |
465 | return ss; | |
466 | } | |
e59797e3 | 467 | #endif |
059ec3d9 PH |
468 | |
469 | ||
470 | /************************************************* | |
e59797e3 | 471 | * Copy and save string in malloc'd store * |
059ec3d9 PH |
472 | *************************************************/ |
473 | ||
e59797e3 | 474 | /* This function assumes that memcpy() is faster than strcpy(). |
059ec3d9 | 475 | |
e59797e3 JH |
476 | Argument: string to copy |
477 | Returns: copy of string in new store | |
059ec3d9 PH |
478 | */ |
479 | ||
480 | uschar * | |
e59797e3 | 481 | string_copy_malloc(const uschar *s) |
059ec3d9 | 482 | { |
e59797e3 JH |
483 | int len = Ustrlen(s) + 1; |
484 | uschar *ss = store_malloc(len); | |
485 | memcpy(ss, s, len); | |
059ec3d9 PH |
486 | return ss; |
487 | } | |
488 | ||
489 | ||
490 | ||
e28326d8 PH |
491 | /************************************************* |
492 | * Copy string if long, inserting newlines * | |
493 | *************************************************/ | |
494 | ||
495 | /* If the given string is longer than 75 characters, it is copied, and within | |
496 | the copy, certain space characters are converted into newlines. | |
497 | ||
498 | Argument: pointer to the string | |
499 | Returns: pointer to the possibly altered string | |
500 | */ | |
501 | ||
502 | uschar * | |
503 | string_split_message(uschar *msg) | |
504 | { | |
505 | uschar *s, *ss; | |
506 | ||
507 | if (msg == NULL || Ustrlen(msg) <= 75) return msg; | |
508 | s = ss = msg = string_copy(msg); | |
509 | ||
510 | for (;;) | |
511 | { | |
512 | int i = 0; | |
513 | while (i < 75 && *ss != 0 && *ss != '\n') ss++, i++; | |
514 | if (*ss == 0) break; | |
515 | if (*ss == '\n') | |
516 | s = ++ss; | |
517 | else | |
518 | { | |
519 | uschar *t = ss + 1; | |
520 | uschar *tt = NULL; | |
521 | while (--t > s + 35) | |
522 | { | |
523 | if (*t == ' ') | |
524 | { | |
525 | if (t[-1] == ':') { tt = t; break; } | |
526 | if (tt == NULL) tt = t; | |
527 | } | |
528 | } | |
529 | ||
530 | if (tt == NULL) /* Can't split behind - try ahead */ | |
531 | { | |
532 | t = ss + 1; | |
533 | while (*t != 0) | |
534 | { | |
535 | if (*t == ' ' || *t == '\n') | |
536 | { tt = t; break; } | |
537 | t++; | |
538 | } | |
539 | } | |
540 | ||
541 | if (tt == NULL) break; /* Can't find anywhere to split */ | |
542 | *tt = '\n'; | |
543 | s = ss = tt+1; | |
544 | } | |
545 | } | |
546 | ||
547 | return msg; | |
548 | } | |
549 | ||
550 | ||
551 | ||
059ec3d9 PH |
552 | /************************************************* |
553 | * Copy returned DNS domain name, de-escaping * | |
554 | *************************************************/ | |
555 | ||
556 | /* If a domain name contains top-bit characters, some resolvers return | |
557 | the fully qualified name with those characters turned into escapes. The | |
558 | convention is a backslash followed by _decimal_ digits. We convert these | |
559 | back into the original binary values. This will be relevant when | |
560 | allow_utf8_domains is set true and UTF-8 characters are used in domain | |
561 | names. Backslash can also be used to escape other characters, though we | |
562 | shouldn't come across them in domain names. | |
563 | ||
564 | Argument: the domain name string | |
565 | Returns: copy of string in new store, de-escaped | |
566 | */ | |
567 | ||
568 | uschar * | |
569 | string_copy_dnsdomain(uschar *s) | |
570 | { | |
571 | uschar *yield; | |
f3ebb786 | 572 | uschar *ss = yield = store_get(Ustrlen(s) + 1, is_tainted(s)); |
059ec3d9 PH |
573 | |
574 | while (*s != 0) | |
575 | { | |
576 | if (*s != '\\') | |
577 | { | |
578 | *ss++ = *s++; | |
579 | } | |
580 | else if (isdigit(s[1])) | |
581 | { | |
582 | *ss++ = (s[1] - '0')*100 + (s[2] - '0')*10 + s[3] - '0'; | |
583 | s += 4; | |
584 | } | |
585 | else if (*(++s) != 0) | |
586 | { | |
587 | *ss++ = *s++; | |
588 | } | |
589 | } | |
590 | ||
591 | *ss = 0; | |
592 | return yield; | |
593 | } | |
594 | ||
595 | ||
596 | #ifndef COMPILE_UTILITY | |
597 | /************************************************* | |
598 | * Copy space-terminated or quoted string * | |
599 | *************************************************/ | |
600 | ||
601 | /* This function copies from a string until its end, or until whitespace is | |
602 | encountered, unless the string begins with a double quote, in which case the | |
603 | terminating quote is sought, and escaping within the string is done. The length | |
604 | of a de-quoted string can be no longer than the original, since escaping always | |
605 | turns n characters into 1 character. | |
606 | ||
607 | Argument: pointer to the pointer to the first character, which gets updated | |
608 | Returns: the new string | |
609 | */ | |
610 | ||
611 | uschar * | |
55414b25 | 612 | string_dequote(const uschar **sptr) |
059ec3d9 | 613 | { |
55414b25 | 614 | const uschar *s = *sptr; |
059ec3d9 PH |
615 | uschar *t, *yield; |
616 | ||
617 | /* First find the end of the string */ | |
618 | ||
619 | if (*s != '\"') | |
059ec3d9 | 620 | while (*s != 0 && !isspace(*s)) s++; |
059ec3d9 PH |
621 | else |
622 | { | |
623 | s++; | |
8c513105 | 624 | while (*s && *s != '\"') |
059ec3d9 PH |
625 | { |
626 | if (*s == '\\') (void)string_interpret_escape(&s); | |
627 | s++; | |
628 | } | |
8c513105 | 629 | if (*s) s++; |
059ec3d9 PH |
630 | } |
631 | ||
632 | /* Get enough store to copy into */ | |
633 | ||
f3ebb786 | 634 | t = yield = store_get(s - *sptr + 1, is_tainted(*sptr)); |
059ec3d9 PH |
635 | s = *sptr; |
636 | ||
637 | /* Do the copy */ | |
638 | ||
639 | if (*s != '\"') | |
059ec3d9 | 640 | while (*s != 0 && !isspace(*s)) *t++ = *s++; |
059ec3d9 PH |
641 | else |
642 | { | |
643 | s++; | |
644 | while (*s != 0 && *s != '\"') | |
645 | { | |
f3ebb786 | 646 | *t++ = *s == '\\' ? string_interpret_escape(&s) : *s; |
059ec3d9 PH |
647 | s++; |
648 | } | |
f3ebb786 | 649 | if (*s) s++; |
059ec3d9 PH |
650 | } |
651 | ||
652 | /* Update the pointer and return the terminated copy */ | |
653 | ||
654 | *sptr = s; | |
655 | *t = 0; | |
656 | return yield; | |
657 | } | |
658 | #endif /* COMPILE_UTILITY */ | |
659 | ||
660 | ||
661 | ||
662 | /************************************************* | |
663 | * Format a string and save it * | |
664 | *************************************************/ | |
665 | ||
94759fce | 666 | /* The formatting is done by string_vformat, which checks the length of |
13e70f55 | 667 | everything. Taint is taken from the worst of the arguments. |
059ec3d9 PH |
668 | |
669 | Arguments: | |
670 | format a printf() format - deliberately char * rather than uschar * | |
671 | because it will most usually be a literal string | |
672 | ... arguments for format | |
673 | ||
674 | Returns: pointer to fresh piece of store containing sprintf'ed string | |
675 | */ | |
676 | ||
677 | uschar * | |
f3ebb786 | 678 | string_sprintf_trc(const char *format, const uschar * func, unsigned line, ...) |
059ec3d9 | 679 | { |
8aa16eb7 JH |
680 | #ifdef COMPILE_UTILITY |
681 | uschar buffer[STRING_SPRINTF_BUFFER_SIZE]; | |
682 | gstring gs = { .size = STRING_SPRINTF_BUFFER_SIZE, .ptr = 0, .s = buffer }; | |
683 | gstring * g = &gs; | |
684 | unsigned flags = 0; | |
685 | #else | |
686 | gstring * g = NULL; | |
687 | unsigned flags = SVFMT_REBUFFER|SVFMT_EXTEND; | |
688 | #endif | |
d12746bc | 689 | |
8aa16eb7 | 690 | va_list ap; |
f3ebb786 | 691 | va_start(ap, line); |
8aa16eb7 JH |
692 | g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE, |
693 | flags, format, ap); | |
059ec3d9 | 694 | va_end(ap); |
d12746bc | 695 | |
f3ebb786 | 696 | if (!g) |
d12746bc JH |
697 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
698 | "string_sprintf expansion was longer than %d; format string was (%s)\n" | |
f3ebb786 JH |
699 | " called from %s %d\n", |
700 | STRING_SPRINTF_BUFFER_SIZE, format, func, line); | |
d12746bc | 701 | |
8aa16eb7 JH |
702 | #ifdef COMPILE_UTILITY |
703 | return string_copyn(g->s, g->ptr); | |
704 | #else | |
f3ebb786 JH |
705 | gstring_release_unused(g); |
706 | return string_from_gstring(g); | |
8aa16eb7 | 707 | #endif |
059ec3d9 PH |
708 | } |
709 | ||
710 | ||
711 | ||
712 | /************************************************* | |
713 | * Case-independent strncmp() function * | |
714 | *************************************************/ | |
715 | ||
716 | /* | |
717 | Arguments: | |
718 | s first string | |
719 | t second string | |
720 | n number of characters to compare | |
721 | ||
722 | Returns: < 0, = 0, or > 0, according to the comparison | |
723 | */ | |
724 | ||
725 | int | |
1ba28e2b | 726 | strncmpic(const uschar *s, const uschar *t, int n) |
059ec3d9 PH |
727 | { |
728 | while (n--) | |
729 | { | |
730 | int c = tolower(*s++) - tolower(*t++); | |
731 | if (c) return c; | |
732 | } | |
733 | return 0; | |
734 | } | |
735 | ||
736 | ||
737 | /************************************************* | |
738 | * Case-independent strcmp() function * | |
739 | *************************************************/ | |
740 | ||
741 | /* | |
742 | Arguments: | |
743 | s first string | |
744 | t second string | |
745 | ||
746 | Returns: < 0, = 0, or > 0, according to the comparison | |
747 | */ | |
748 | ||
749 | int | |
1ba28e2b | 750 | strcmpic(const uschar *s, const uschar *t) |
059ec3d9 PH |
751 | { |
752 | while (*s != 0) | |
753 | { | |
754 | int c = tolower(*s++) - tolower(*t++); | |
755 | if (c != 0) return c; | |
756 | } | |
757 | return *t; | |
758 | } | |
759 | ||
760 | ||
761 | /************************************************* | |
762 | * Case-independent strstr() function * | |
763 | *************************************************/ | |
764 | ||
765 | /* The third argument specifies whether whitespace is required | |
766 | to follow the matched string. | |
767 | ||
768 | Arguments: | |
769 | s string to search | |
770 | t substring to search for | |
771 | space_follows if TRUE, match only if whitespace follows | |
772 | ||
773 | Returns: pointer to substring in string, or NULL if not found | |
774 | */ | |
775 | ||
776 | uschar * | |
777 | strstric(uschar *s, uschar *t, BOOL space_follows) | |
778 | { | |
779 | uschar *p = t; | |
780 | uschar *yield = NULL; | |
781 | int cl = tolower(*p); | |
782 | int cu = toupper(*p); | |
783 | ||
784 | while (*s) | |
785 | { | |
786 | if (*s == cl || *s == cu) | |
787 | { | |
788 | if (yield == NULL) yield = s; | |
789 | if (*(++p) == 0) | |
790 | { | |
791 | if (!space_follows || s[1] == ' ' || s[1] == '\n' ) return yield; | |
792 | yield = NULL; | |
793 | p = t; | |
794 | } | |
795 | cl = tolower(*p); | |
796 | cu = toupper(*p); | |
797 | s++; | |
798 | } | |
799 | else if (yield != NULL) | |
800 | { | |
801 | yield = NULL; | |
802 | p = t; | |
803 | cl = tolower(*p); | |
804 | cu = toupper(*p); | |
805 | } | |
806 | else s++; | |
807 | } | |
808 | return NULL; | |
809 | } | |
810 | ||
811 | ||
812 | ||
d12746bc JH |
813 | #ifdef COMPILE_UTILITY |
814 | /* Dummy version for this function; it should never be called */ | |
815 | static void | |
f3ebb786 | 816 | gstring_grow(gstring * g, int count) |
d12746bc JH |
817 | { |
818 | assert(FALSE); | |
819 | } | |
820 | #endif | |
821 | ||
822 | ||
823 | ||
059ec3d9 PH |
824 | #ifndef COMPILE_UTILITY |
825 | /************************************************* | |
826 | * Get next string from separated list * | |
827 | *************************************************/ | |
828 | ||
829 | /* Leading and trailing space is removed from each item. The separator in the | |
830 | list is controlled by the int pointed to by the separator argument as follows: | |
831 | ||
ec95d1a6 PH |
832 | If the value is > 0 it is used as the separator. This is typically used for |
833 | sublists such as slash-separated options. The value is always a printing | |
834 | character. | |
835 | ||
836 | (If the value is actually > UCHAR_MAX there is only one item in the list. | |
059ec3d9 PH |
837 | This is used for some cases when called via functions that sometimes |
838 | plough through lists, and sometimes are given single items.) | |
059ec3d9 | 839 | |
ec95d1a6 PH |
840 | If the value is <= 0, the string is inspected for a leading <x, where x is an |
841 | ispunct() or an iscntrl() character. If found, x is used as the separator. If | |
842 | not found: | |
843 | ||
844 | (a) if separator == 0, ':' is used | |
845 | (b) if separator <0, -separator is used | |
846 | ||
847 | In all cases the value of the separator that is used is written back to the | |
848 | int so that it is used on subsequent calls as we progress through the list. | |
849 | ||
850 | A literal ispunct() separator can be represented in an item by doubling, but | |
851 | there is no way to include an iscntrl() separator as part of the data. | |
059ec3d9 PH |
852 | |
853 | Arguments: | |
854 | listptr points to a pointer to the current start of the list; the | |
855 | pointer gets updated to point after the end of the next item | |
856 | separator a pointer to the separator character in an int (see above) | |
857 | buffer where to put a copy of the next string in the list; or | |
858 | NULL if the next string is returned in new memory | |
859 | buflen when buffer is not NULL, the size of buffer; otherwise ignored | |
860 | ||
861 | Returns: pointer to buffer, containing the next substring, | |
862 | or NULL if no more substrings | |
863 | */ | |
864 | ||
865 | uschar * | |
55414b25 | 866 | string_nextinlist(const uschar **listptr, int *separator, uschar *buffer, int buflen) |
059ec3d9 | 867 | { |
55414b25 JH |
868 | int sep = *separator; |
869 | const uschar *s = *listptr; | |
ec95d1a6 | 870 | BOOL sep_is_special; |
059ec3d9 | 871 | |
8b455685 | 872 | if (!s) return NULL; |
ec95d1a6 PH |
873 | |
874 | /* This allows for a fixed specified separator to be an iscntrl() character, | |
875 | but at the time of implementation, this is never the case. However, it's best | |
876 | to be conservative. */ | |
877 | ||
878 | while (isspace(*s) && *s != sep) s++; | |
879 | ||
880 | /* A change of separator is permitted, so look for a leading '<' followed by an | |
881 | allowed character. */ | |
059ec3d9 PH |
882 | |
883 | if (sep <= 0) | |
884 | { | |
ec95d1a6 | 885 | if (*s == '<' && (ispunct(s[1]) || iscntrl(s[1]))) |
059ec3d9 PH |
886 | { |
887 | sep = s[1]; | |
b72f857f | 888 | if (*++s) ++s; |
ec95d1a6 | 889 | while (isspace(*s) && *s != sep) s++; |
059ec3d9 PH |
890 | } |
891 | else | |
8b455685 | 892 | sep = sep ? -sep : ':'; |
059ec3d9 PH |
893 | *separator = sep; |
894 | } | |
895 | ||
ec95d1a6 PH |
896 | /* An empty string has no list elements */ |
897 | ||
8b455685 | 898 | if (!*s) return NULL; |
059ec3d9 | 899 | |
ec95d1a6 PH |
900 | /* Note whether whether or not the separator is an iscntrl() character. */ |
901 | ||
902 | sep_is_special = iscntrl(sep); | |
903 | ||
059ec3d9 PH |
904 | /* Handle the case when a buffer is provided. */ |
905 | ||
617d3932 | 906 | if (buffer) |
059ec3d9 | 907 | { |
d4ff61d1 | 908 | int p = 0; |
8b455685 | 909 | for (; *s; s++) |
059ec3d9 | 910 | { |
ec95d1a6 | 911 | if (*s == sep && (*(++s) != sep || sep_is_special)) break; |
059ec3d9 PH |
912 | if (p < buflen - 1) buffer[p++] = *s; |
913 | } | |
914 | while (p > 0 && isspace(buffer[p-1])) p--; | |
8b455685 | 915 | buffer[p] = '\0'; |
059ec3d9 PH |
916 | } |
917 | ||
918 | /* Handle the case when a buffer is not provided. */ | |
919 | ||
920 | else | |
921 | { | |
acec9514 | 922 | gstring * g = NULL; |
ec95d1a6 | 923 | |
059ec3d9 | 924 | /* We know that *s != 0 at this point. However, it might be pointing to a |
ec95d1a6 PH |
925 | separator, which could indicate an empty string, or (if an ispunct() |
926 | character) could be doubled to indicate a separator character as data at the | |
927 | start of a string. Avoid getting working memory for an empty item. */ | |
059ec3d9 PH |
928 | |
929 | if (*s == sep) | |
930 | { | |
931 | s++; | |
ec95d1a6 PH |
932 | if (*s != sep || sep_is_special) |
933 | { | |
934 | *listptr = s; | |
935 | return string_copy(US""); | |
936 | } | |
059ec3d9 PH |
937 | } |
938 | ||
ec95d1a6 PH |
939 | /* Not an empty string; the first character is guaranteed to be a data |
940 | character. */ | |
941 | ||
942 | for (;;) | |
059ec3d9 | 943 | { |
d7978c0f JH |
944 | const uschar * ss; |
945 | for (ss = s + 1; *ss && *ss != sep; ) ss++; | |
acec9514 | 946 | g = string_catn(g, s, ss-s); |
ec95d1a6 | 947 | s = ss; |
8b455685 | 948 | if (!*s || *++s != sep || sep_is_special) break; |
059ec3d9 | 949 | } |
acec9514 JH |
950 | while (g->ptr > 0 && isspace(g->s[g->ptr-1])) g->ptr--; |
951 | buffer = string_from_gstring(g); | |
e59797e3 | 952 | gstring_release_unused(g); |
059ec3d9 PH |
953 | } |
954 | ||
955 | /* Update the current pointer and return the new string */ | |
956 | ||
957 | *listptr = s; | |
958 | return buffer; | |
959 | } | |
059ec3d9 PH |
960 | |
961 | ||
4226691b JH |
962 | static const uschar * |
963 | Ustrnchr(const uschar * s, int c, unsigned * len) | |
964 | { | |
965 | unsigned siz = *len; | |
966 | while (siz) | |
967 | { | |
968 | if (!*s) return NULL; | |
969 | if (*s == c) | |
970 | { | |
971 | *len = siz; | |
972 | return s; | |
973 | } | |
974 | s++; | |
975 | siz--; | |
976 | } | |
977 | return NULL; | |
978 | } | |
979 | ||
980 | ||
76146973 | 981 | /************************************************ |
1d9ddac9 | 982 | * Add element to separated list * |
76146973 | 983 | ************************************************/ |
4226691b JH |
984 | /* This function is used to build a list, returning an allocated null-terminated |
985 | growable string. The given element has any embedded separator characters | |
76146973 JH |
986 | doubled. |
987 | ||
4226691b JH |
988 | Despite having the same growable-string interface as string_cat() the list is |
989 | always returned null-terminated. | |
990 | ||
76146973 | 991 | Arguments: |
acec9514 | 992 | list expanding-string for the list that is being built, or NULL |
76146973 | 993 | if this is a new list that has no contents yet |
4c04137d JS |
994 | sep list separator character |
995 | ele new element to be appended to the list | |
76146973 JH |
996 | |
997 | Returns: pointer to the start of the list, changed if copied for expansion. | |
998 | */ | |
999 | ||
acec9514 JH |
1000 | gstring * |
1001 | string_append_listele(gstring * list, uschar sep, const uschar * ele) | |
76146973 | 1002 | { |
76146973 JH |
1003 | uschar * sp; |
1004 | ||
acec9514 JH |
1005 | if (list && list->ptr) |
1006 | list = string_catn(list, &sep, 1); | |
76146973 | 1007 | |
e3dd1d67 | 1008 | while((sp = Ustrchr(ele, sep))) |
76146973 | 1009 | { |
acec9514 JH |
1010 | list = string_catn(list, ele, sp-ele+1); |
1011 | list = string_catn(list, &sep, 1); | |
76146973 JH |
1012 | ele = sp+1; |
1013 | } | |
acec9514 JH |
1014 | list = string_cat(list, ele); |
1015 | (void) string_from_gstring(list); | |
4226691b | 1016 | return list; |
76146973 | 1017 | } |
00ba27c5 JH |
1018 | |
1019 | ||
acec9514 JH |
1020 | gstring * |
1021 | string_append_listele_n(gstring * list, uschar sep, const uschar * ele, | |
1022 | unsigned len) | |
00ba27c5 | 1023 | { |
00ba27c5 JH |
1024 | const uschar * sp; |
1025 | ||
acec9514 JH |
1026 | if (list && list->ptr) |
1027 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1028 | |
1029 | while((sp = Ustrnchr(ele, sep, &len))) | |
1030 | { | |
acec9514 JH |
1031 | list = string_catn(list, ele, sp-ele+1); |
1032 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1033 | ele = sp+1; |
1034 | len--; | |
1035 | } | |
acec9514 JH |
1036 | list = string_catn(list, ele, len); |
1037 | (void) string_from_gstring(list); | |
4226691b | 1038 | return list; |
00ba27c5 | 1039 | } |
76146973 JH |
1040 | |
1041 | ||
059ec3d9 | 1042 | |
bce15b62 JH |
1043 | /* A slightly-bogus listmaker utility; the separator is a string so |
1044 | can be multiple chars - there is no checking for the element content | |
1045 | containing any of the separator. */ | |
1046 | ||
1047 | gstring * | |
1048 | string_append2_listele_n(gstring * list, const uschar * sepstr, | |
1049 | const uschar * ele, unsigned len) | |
1050 | { | |
bce15b62 JH |
1051 | if (list && list->ptr) |
1052 | list = string_cat(list, sepstr); | |
1053 | ||
1054 | list = string_catn(list, ele, len); | |
1055 | (void) string_from_gstring(list); | |
1056 | return list; | |
1057 | } | |
1058 | ||
1059 | ||
1060 | ||
acec9514 | 1061 | /************************************************/ |
f3ebb786 JH |
1062 | /* Add more space to a growable-string. The caller should check |
1063 | first if growth is required. The gstring struct is modified on | |
1064 | return; specifically, the string-base-pointer may have been changed. | |
d12746bc JH |
1065 | |
1066 | Arguments: | |
1067 | g the growable-string | |
f3ebb786 | 1068 | count amount needed for g->ptr to increase by |
938593e9 JH |
1069 | */ |
1070 | ||
1071 | static void | |
f3ebb786 | 1072 | gstring_grow(gstring * g, int count) |
acec9514 | 1073 | { |
f3ebb786 | 1074 | int p = g->ptr; |
acec9514 | 1075 | int oldsize = g->size; |
f3ebb786 | 1076 | BOOL tainted = is_tainted(g->s); |
acec9514 JH |
1077 | |
1078 | /* Mostly, string_cat() is used to build small strings of a few hundred | |
1079 | characters at most. There are times, however, when the strings are very much | |
1080 | longer (for example, a lookup that returns a vast number of alias addresses). | |
1081 | To try to keep things reasonable, we use increments whose size depends on the | |
1082 | existing length of the string. */ | |
1083 | ||
1084 | unsigned inc = oldsize < 4096 ? 127 : 1023; | |
f3ebb786 JH |
1085 | |
1086 | if (count <= 0) return; | |
1087 | g->size = (p + count + inc + 1) & ~inc; /* one for a NUL */ | |
acec9514 JH |
1088 | |
1089 | /* Try to extend an existing allocation. If the result of calling | |
1090 | store_extend() is false, either there isn't room in the current memory block, | |
1091 | or this string is not the top item on the dynamic store stack. We then have | |
1092 | to get a new chunk of store and copy the old string. When building large | |
1093 | strings, it is helpful to call store_release() on the old string, to release | |
1094 | memory blocks that have become empty. (The block will be freed if the string | |
1095 | is at its start.) However, we can do this only if we know that the old string | |
1096 | was the last item on the dynamic memory stack. This is the case if it matches | |
1097 | store_last_get. */ | |
1098 | ||
f3ebb786 JH |
1099 | if (!store_extend(g->s, tainted, oldsize, g->size)) |
1100 | g->s = store_newblock(g->s, tainted, g->size, p); | |
acec9514 JH |
1101 | } |
1102 | ||
1103 | ||
1104 | ||
d12746bc JH |
1105 | /************************************************* |
1106 | * Add chars to string * | |
1107 | *************************************************/ | |
059ec3d9 PH |
1108 | /* This function is used when building up strings of unknown length. Room is |
1109 | always left for a terminating zero to be added to the string that is being | |
1110 | built. This function does not require the string that is being added to be NUL | |
1111 | terminated, because the number of characters to add is given explicitly. It is | |
1112 | sometimes called to extract parts of other strings. | |
1113 | ||
1114 | Arguments: | |
1115 | string points to the start of the string that is being built, or NULL | |
1116 | if this is a new string that has no contents yet | |
059ec3d9 PH |
1117 | s points to characters to add |
1118 | count count of characters to add; must not exceed the length of s, if s | |
42055a33 | 1119 | is a C string. |
059ec3d9 | 1120 | |
059ec3d9 PH |
1121 | Returns: pointer to the start of the string, changed if copied for expansion. |
1122 | Note that a NUL is not added, though space is left for one. This is | |
1123 | because string_cat() is often called multiple times to build up a | |
1124 | string - there's no point adding the NUL till the end. | |
a1b8a755 | 1125 | |
059ec3d9 | 1126 | */ |
96f5fe4c | 1127 | /* coverity[+alloc] */ |
059ec3d9 | 1128 | |
acec9514 JH |
1129 | gstring * |
1130 | string_catn(gstring * g, const uschar *s, int count) | |
059ec3d9 | 1131 | { |
acec9514 | 1132 | int p; |
f3ebb786 | 1133 | BOOL srctaint = is_tainted(s); |
059ec3d9 | 1134 | |
acec9514 | 1135 | if (!g) |
059ec3d9 | 1136 | { |
acec9514 JH |
1137 | unsigned inc = count < 4096 ? 127 : 1023; |
1138 | unsigned size = ((count + inc) & ~inc) + 1; | |
f3ebb786 | 1139 | g = string_get_tainted(size, srctaint); |
059ec3d9 | 1140 | } |
f3ebb786 JH |
1141 | else if (srctaint && !is_tainted(g->s)) |
1142 | gstring_rebuffer(g); | |
059ec3d9 | 1143 | |
acec9514 JH |
1144 | p = g->ptr; |
1145 | if (p + count >= g->size) | |
f3ebb786 | 1146 | gstring_grow(g, count); |
acec9514 | 1147 | |
059ec3d9 PH |
1148 | /* Because we always specify the exact number of characters to copy, we can |
1149 | use memcpy(), which is likely to be more efficient than strncopy() because the | |
acec9514 | 1150 | latter has to check for zero bytes. */ |
059ec3d9 | 1151 | |
acec9514 JH |
1152 | memcpy(g->s + p, s, count); |
1153 | g->ptr = p + count; | |
1154 | return g; | |
059ec3d9 | 1155 | } |
c3aefacc HSHR |
1156 | |
1157 | ||
acec9514 JH |
1158 | gstring * |
1159 | string_cat(gstring *string, const uschar *s) | |
c2f669a4 | 1160 | { |
acec9514 | 1161 | return string_catn(string, s, Ustrlen(s)); |
c2f669a4 | 1162 | } |
059ec3d9 PH |
1163 | |
1164 | ||
1165 | ||
059ec3d9 PH |
1166 | /************************************************* |
1167 | * Append strings to another string * | |
1168 | *************************************************/ | |
1169 | ||
1170 | /* This function can be used to build a string from many other strings. | |
1171 | It calls string_cat() to do the dirty work. | |
1172 | ||
1173 | Arguments: | |
acec9514 | 1174 | string expanding-string that is being built, or NULL |
059ec3d9 | 1175 | if this is a new string that has no contents yet |
059ec3d9 PH |
1176 | count the number of strings to append |
1177 | ... "count" uschar* arguments, which must be valid zero-terminated | |
1178 | C strings | |
1179 | ||
1180 | Returns: pointer to the start of the string, changed if copied for expansion. | |
1181 | The string is not zero-terminated - see string_cat() above. | |
1182 | */ | |
1183 | ||
acec9514 JH |
1184 | __inline__ gstring * |
1185 | string_append(gstring *string, int count, ...) | |
059ec3d9 PH |
1186 | { |
1187 | va_list ap; | |
059ec3d9 PH |
1188 | |
1189 | va_start(ap, count); | |
acec9514 | 1190 | while (count-- > 0) |
059ec3d9 PH |
1191 | { |
1192 | uschar *t = va_arg(ap, uschar *); | |
acec9514 | 1193 | string = string_cat(string, t); |
059ec3d9 PH |
1194 | } |
1195 | va_end(ap); | |
1196 | ||
1197 | return string; | |
1198 | } | |
1199 | #endif | |
1200 | ||
1201 | ||
1202 | ||
1203 | /************************************************* | |
1204 | * Format a string with length checks * | |
1205 | *************************************************/ | |
1206 | ||
1207 | /* This function is used to format a string with checking of the length of the | |
1208 | output for all conversions. It protects Exim from absent-mindedness when | |
1209 | calling functions like debug_printf and string_sprintf, and elsewhere. There | |
1210 | are two different entry points to what is actually the same function, depending | |
1211 | on whether the variable length list of data arguments are given explicitly or | |
1212 | as a va_list item. | |
1213 | ||
1214 | The formats are the usual printf() ones, with some omissions (never used) and | |
c0b9d3e8 | 1215 | three additions for strings: %S forces lower case, %T forces upper case, and |
acec9514 | 1216 | %#s or %#S prints nothing for a NULL string. Without the # "NULL" is printed |
c0b9d3e8 JH |
1217 | (useful in debugging). There is also the addition of %D and %M, which insert |
1218 | the date in the form used for datestamped log files. | |
059ec3d9 PH |
1219 | |
1220 | Arguments: | |
1221 | buffer a buffer in which to put the formatted string | |
1222 | buflen the length of the buffer | |
1223 | format the format string - deliberately char * and not uschar * | |
1224 | ... or ap variable list of supplementary arguments | |
1225 | ||
1226 | Returns: TRUE if the result fitted in the buffer | |
1227 | */ | |
1228 | ||
1229 | BOOL | |
f3ebb786 JH |
1230 | string_format_trc(uschar * buffer, int buflen, |
1231 | const uschar * func, unsigned line, const char * format, ...) | |
059ec3d9 | 1232 | { |
d12746bc | 1233 | gstring g = { .size = buflen, .ptr = 0, .s = buffer }, *gp; |
059ec3d9 PH |
1234 | va_list ap; |
1235 | va_start(ap, format); | |
f3ebb786 JH |
1236 | gp = string_vformat_trc(&g, func, line, STRING_SPRINTF_BUFFER_SIZE, |
1237 | 0, format, ap); | |
059ec3d9 | 1238 | va_end(ap); |
d12746bc JH |
1239 | g.s[g.ptr] = '\0'; |
1240 | return !!gp; | |
059ec3d9 PH |
1241 | } |
1242 | ||
1243 | ||
d12746bc | 1244 | |
d12746bc | 1245 | |
f3ebb786 | 1246 | /* Build or append to a growing-string, sprintf-style. |
d12746bc | 1247 | |
b273058b JH |
1248 | Arguments: |
1249 | g a growable-string | |
1250 | func called-from function name, for debug | |
1251 | line called-from file line number, for debug | |
1252 | limit maximum string size | |
1253 | flags see below | |
1254 | format printf-like format string | |
1255 | ap variable-args pointer | |
1256 | ||
1257 | Flags: | |
1258 | SVFMT_EXTEND buffer can be created or exteded as needed | |
1259 | SVFMT_REBUFFER buffer can be recopied to tainted mem as needed | |
1260 | SVFMT_TAINT_NOCHK do not check inputs for taint | |
1261 | ||
f3ebb786 JH |
1262 | If the "extend" flag is true, the string passed in can be NULL, |
1263 | empty, or non-empty. Growing is subject to an overall limit given | |
b273058b | 1264 | by the limit argument. |
d12746bc | 1265 | |
f3ebb786 | 1266 | If the "extend" flag is false, the string passed in may not be NULL, |
d12746bc JH |
1267 | will not be grown, and is usable in the original place after return. |
1268 | The return value can be NULL to signify overflow. | |
1269 | ||
adc4ecf9 JH |
1270 | Returns the possibly-new (if copy for growth or taint-handling was needed) |
1271 | string, not nul-terminated. | |
d12746bc JH |
1272 | */ |
1273 | ||
1274 | gstring * | |
f3ebb786 JH |
1275 | string_vformat_trc(gstring * g, const uschar * func, unsigned line, |
1276 | unsigned size_limit, unsigned flags, const char *format, va_list ap) | |
059ec3d9 | 1277 | { |
d12746bc JH |
1278 | enum ltypes { L_NORMAL=1, L_SHORT=2, L_LONG=3, L_LONGLONG=4, L_LONGDOUBLE=5, L_SIZE=6 }; |
1279 | ||
f3ebb786 | 1280 | int width, precision, off, lim, need; |
d12746bc | 1281 | const char * fp = format; /* Deliberately not unsigned */ |
f3ebb786 | 1282 | BOOL dest_tainted = FALSE; |
b1c749bb | 1283 | |
d12746bc JH |
1284 | string_datestamp_offset = -1; /* Datestamp not inserted */ |
1285 | string_datestamp_length = 0; /* Datestamp not inserted */ | |
1286 | string_datestamp_type = 0; /* Datestamp not inserted */ | |
059ec3d9 | 1287 | |
d12746bc | 1288 | #ifdef COMPILE_UTILITY |
f3ebb786 | 1289 | assert(!(flags & SVFMT_EXTEND)); |
d12746bc JH |
1290 | assert(g); |
1291 | #else | |
1292 | ||
1293 | /* Ensure we have a string, to save on checking later */ | |
1294 | if (!g) g = string_get(16); | |
f3ebb786 JH |
1295 | else if (!(flags & SVFMT_TAINT_NOCHK)) dest_tainted = is_tainted(g->s); |
1296 | ||
1297 | if (!(flags & SVFMT_TAINT_NOCHK) && !dest_tainted && is_tainted(format)) | |
1298 | { | |
aaabfafe | 1299 | #ifndef MACRO_PREDEF |
f3ebb786 JH |
1300 | if (!(flags & SVFMT_REBUFFER)) |
1301 | die_tainted(US"string_vformat", func, line); | |
aaabfafe | 1302 | #endif |
f3ebb786 JH |
1303 | gstring_rebuffer(g); |
1304 | dest_tainted = TRUE; | |
1305 | } | |
d12746bc JH |
1306 | #endif /*!COMPILE_UTILITY*/ |
1307 | ||
1308 | lim = g->size - 1; /* leave one for a nul */ | |
1309 | off = g->ptr; /* remember initial offset in gstring */ | |
059ec3d9 PH |
1310 | |
1311 | /* Scan the format and handle the insertions */ | |
1312 | ||
d12746bc | 1313 | while (*fp) |
059ec3d9 | 1314 | { |
b1c749bb | 1315 | int length = L_NORMAL; |
059ec3d9 PH |
1316 | int *nptr; |
1317 | int slen; | |
d12746bc JH |
1318 | const char *null = "NULL"; /* ) These variables */ |
1319 | const char *item_start, *s; /* ) are deliberately */ | |
1320 | char newformat[16]; /* ) not unsigned */ | |
1321 | char * gp = CS g->s + g->ptr; /* ) */ | |
059ec3d9 PH |
1322 | |
1323 | /* Non-% characters just get copied verbatim */ | |
1324 | ||
1325 | if (*fp != '%') | |
1326 | { | |
d12746bc | 1327 | /* Avoid string_copyn() due to COMPILE_UTILITY */ |
f3ebb786 | 1328 | if ((need = g->ptr + 1) > lim) |
1100a343 | 1329 | { |
f3ebb786 JH |
1330 | if (!(flags & SVFMT_EXTEND) || need > size_limit) return NULL; |
1331 | gstring_grow(g, 1); | |
1100a343 JH |
1332 | lim = g->size - 1; |
1333 | } | |
d12746bc | 1334 | g->s[g->ptr++] = (uschar) *fp++; |
059ec3d9 PH |
1335 | continue; |
1336 | } | |
1337 | ||
1338 | /* Deal with % characters. Pick off the width and precision, for checking | |
1339 | strings, skipping over the flag and modifier characters. */ | |
1340 | ||
1341 | item_start = fp; | |
1342 | width = precision = -1; | |
1343 | ||
1344 | if (strchr("-+ #0", *(++fp)) != NULL) | |
1345 | { | |
1346 | if (*fp == '#') null = ""; | |
1347 | fp++; | |
1348 | } | |
1349 | ||
1350 | if (isdigit((uschar)*fp)) | |
1351 | { | |
1352 | width = *fp++ - '0'; | |
1353 | while (isdigit((uschar)*fp)) width = width * 10 + *fp++ - '0'; | |
1354 | } | |
1355 | else if (*fp == '*') | |
1356 | { | |
1357 | width = va_arg(ap, int); | |
1358 | fp++; | |
1359 | } | |
1360 | ||
1361 | if (*fp == '.') | |
059ec3d9 PH |
1362 | if (*(++fp) == '*') |
1363 | { | |
1364 | precision = va_arg(ap, int); | |
1365 | fp++; | |
1366 | } | |
1367 | else | |
d12746bc JH |
1368 | for (precision = 0; isdigit((uschar)*fp); fp++) |
1369 | precision = precision*10 + *fp - '0'; | |
059ec3d9 | 1370 | |
91a246f6 | 1371 | /* Skip over 'h', 'L', 'l', 'll' and 'z', remembering the item length */ |
b1c749bb PH |
1372 | |
1373 | if (*fp == 'h') | |
1374 | { fp++; length = L_SHORT; } | |
1375 | else if (*fp == 'L') | |
1376 | { fp++; length = L_LONGDOUBLE; } | |
1377 | else if (*fp == 'l') | |
b1c749bb | 1378 | if (fp[1] == 'l') |
d12746bc | 1379 | { fp += 2; length = L_LONGLONG; } |
b1c749bb | 1380 | else |
d12746bc | 1381 | { fp++; length = L_LONG; } |
91a246f6 PP |
1382 | else if (*fp == 'z') |
1383 | { fp++; length = L_SIZE; } | |
059ec3d9 PH |
1384 | |
1385 | /* Handle each specific format type. */ | |
1386 | ||
1387 | switch (*fp++) | |
1388 | { | |
1389 | case 'n': | |
d12746bc JH |
1390 | nptr = va_arg(ap, int *); |
1391 | *nptr = g->ptr - off; | |
1392 | break; | |
059ec3d9 PH |
1393 | |
1394 | case 'd': | |
1395 | case 'o': | |
1396 | case 'u': | |
1397 | case 'x': | |
1398 | case 'X': | |
d12746bc | 1399 | width = length > L_LONG ? 24 : 12; |
f3ebb786 | 1400 | if ((need = g->ptr + width) > lim) |
1100a343 | 1401 | { |
f3ebb786 JH |
1402 | if (!(flags & SVFMT_EXTEND) || need >= size_limit) return NULL; |
1403 | gstring_grow(g, width); | |
1100a343 JH |
1404 | lim = g->size - 1; |
1405 | gp = CS g->s + g->ptr; | |
1406 | } | |
d12746bc JH |
1407 | strncpy(newformat, item_start, fp - item_start); |
1408 | newformat[fp - item_start] = 0; | |
b1c749bb | 1409 | |
d12746bc JH |
1410 | /* Short int is promoted to int when passing through ..., so we must use |
1411 | int for va_arg(). */ | |
b1c749bb | 1412 | |
d12746bc JH |
1413 | switch(length) |
1414 | { | |
1415 | case L_SHORT: | |
1416 | case L_NORMAL: | |
1417 | g->ptr += sprintf(gp, newformat, va_arg(ap, int)); break; | |
1418 | case L_LONG: | |
1419 | g->ptr += sprintf(gp, newformat, va_arg(ap, long int)); break; | |
1420 | case L_LONGLONG: | |
1421 | g->ptr += sprintf(gp, newformat, va_arg(ap, LONGLONG_T)); break; | |
1422 | case L_SIZE: | |
1423 | g->ptr += sprintf(gp, newformat, va_arg(ap, size_t)); break; | |
1424 | } | |
1425 | break; | |
059ec3d9 PH |
1426 | |
1427 | case 'p': | |
2e8db779 JH |
1428 | { |
1429 | void * ptr; | |
f3ebb786 | 1430 | if ((need = g->ptr + 24) > lim) |
1100a343 | 1431 | { |
f3ebb786 JH |
1432 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1433 | gstring_grow(g, 24); | |
1100a343 JH |
1434 | lim = g->size - 1; |
1435 | gp = CS g->s + g->ptr; | |
1436 | } | |
81f358da JH |
1437 | /* sprintf() saying "(nil)" for a null pointer seems unreliable. |
1438 | Handle it explicitly. */ | |
2e8db779 JH |
1439 | if ((ptr = va_arg(ap, void *))) |
1440 | { | |
1441 | strncpy(newformat, item_start, fp - item_start); | |
1442 | newformat[fp - item_start] = 0; | |
d12746bc | 1443 | g->ptr += sprintf(gp, newformat, ptr); |
2e8db779 JH |
1444 | } |
1445 | else | |
d12746bc | 1446 | g->ptr += sprintf(gp, "(nil)"); |
2e8db779 | 1447 | } |
059ec3d9 PH |
1448 | break; |
1449 | ||
1450 | /* %f format is inherently insecure if the numbers that it may be | |
870f6ba8 TF |
1451 | handed are unknown (e.g. 1e300). However, in Exim, %f is used for |
1452 | printing load averages, and these are actually stored as integers | |
1453 | (load average * 1000) so the size of the numbers is constrained. | |
1454 | It is also used for formatting sending rates, where the simplicity | |
1455 | of the format prevents overflow. */ | |
059ec3d9 PH |
1456 | |
1457 | case 'f': | |
1458 | case 'e': | |
1459 | case 'E': | |
1460 | case 'g': | |
1461 | case 'G': | |
d12746bc | 1462 | if (precision < 0) precision = 6; |
f3ebb786 | 1463 | if ((need = g->ptr + precision + 8) > lim) |
1100a343 | 1464 | { |
f3ebb786 JH |
1465 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1466 | gstring_grow(g, precision+8); | |
1100a343 JH |
1467 | lim = g->size - 1; |
1468 | gp = CS g->s + g->ptr; | |
1469 | } | |
d12746bc JH |
1470 | strncpy(newformat, item_start, fp - item_start); |
1471 | newformat[fp-item_start] = 0; | |
1472 | if (length == L_LONGDOUBLE) | |
1473 | g->ptr += sprintf(gp, newformat, va_arg(ap, long double)); | |
1474 | else | |
1475 | g->ptr += sprintf(gp, newformat, va_arg(ap, double)); | |
1476 | break; | |
059ec3d9 PH |
1477 | |
1478 | /* String types */ | |
1479 | ||
1480 | case '%': | |
f3ebb786 | 1481 | if ((need = g->ptr + 1) > lim) |
1100a343 | 1482 | { |
f3ebb786 JH |
1483 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1484 | gstring_grow(g, 1); | |
1100a343 JH |
1485 | lim = g->size - 1; |
1486 | } | |
d12746bc JH |
1487 | g->s[g->ptr++] = (uschar) '%'; |
1488 | break; | |
059ec3d9 PH |
1489 | |
1490 | case 'c': | |
f3ebb786 | 1491 | if ((need = g->ptr + 1) > lim) |
1100a343 | 1492 | { |
f3ebb786 JH |
1493 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1494 | gstring_grow(g, 1); | |
1100a343 JH |
1495 | lim = g->size - 1; |
1496 | } | |
d12746bc JH |
1497 | g->s[g->ptr++] = (uschar) va_arg(ap, int); |
1498 | break; | |
059ec3d9 | 1499 | |
f1e5fef5 | 1500 | case 'D': /* Insert daily datestamp for log file names */ |
d12746bc JH |
1501 | s = CS tod_stamp(tod_log_datestamp_daily); |
1502 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1503 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1504 | string_datestamp_type = tod_log_datestamp_daily; | |
1505 | slen = string_datestamp_length; | |
1506 | goto INSERT_STRING; | |
f1e5fef5 PP |
1507 | |
1508 | case 'M': /* Insert monthly datestamp for log file names */ | |
d12746bc JH |
1509 | s = CS tod_stamp(tod_log_datestamp_monthly); |
1510 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1511 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1512 | string_datestamp_type = tod_log_datestamp_monthly; | |
1513 | slen = string_datestamp_length; | |
1514 | goto INSERT_STRING; | |
059ec3d9 PH |
1515 | |
1516 | case 's': | |
1517 | case 'S': /* Forces *lower* case */ | |
c0b9d3e8 | 1518 | case 'T': /* Forces *upper* case */ |
d12746bc | 1519 | s = va_arg(ap, char *); |
059ec3d9 | 1520 | |
d12746bc JH |
1521 | if (!s) s = null; |
1522 | slen = Ustrlen(s); | |
059ec3d9 | 1523 | |
f3ebb786 JH |
1524 | if (!(flags & SVFMT_TAINT_NOCHK) && !dest_tainted && is_tainted(s)) |
1525 | if (flags & SVFMT_REBUFFER) | |
1526 | { | |
1527 | gstring_rebuffer(g); | |
1528 | gp = CS g->s + g->ptr; | |
1529 | dest_tainted = TRUE; | |
1530 | } | |
aaabfafe | 1531 | #ifndef MACRO_PREDEF |
f3ebb786 JH |
1532 | else |
1533 | die_tainted(US"string_vformat", func, line); | |
aaabfafe | 1534 | #endif |
f3ebb786 | 1535 | |
f1e5fef5 PP |
1536 | INSERT_STRING: /* Come to from %D or %M above */ |
1537 | ||
059ec3d9 | 1538 | { |
d12746bc | 1539 | BOOL truncated = FALSE; |
059ec3d9 | 1540 | |
d12746bc JH |
1541 | /* If the width is specified, check that there is a precision |
1542 | set; if not, set it to the width to prevent overruns of long | |
1543 | strings. */ | |
059ec3d9 | 1544 | |
d12746bc JH |
1545 | if (width >= 0) |
1546 | { | |
1547 | if (precision < 0) precision = width; | |
1548 | } | |
059ec3d9 | 1549 | |
d12746bc JH |
1550 | /* If a width is not specified and the precision is specified, set |
1551 | the width to the precision, or the string length if shorted. */ | |
059ec3d9 | 1552 | |
d12746bc JH |
1553 | else if (precision >= 0) |
1554 | width = precision < slen ? precision : slen; | |
059ec3d9 | 1555 | |
d12746bc | 1556 | /* If neither are specified, set them both to the string length. */ |
059ec3d9 | 1557 | |
d12746bc JH |
1558 | else |
1559 | width = precision = slen; | |
1560 | ||
f3ebb786 | 1561 | if ((need = g->ptr + width) >= size_limit || !(flags & SVFMT_EXTEND)) |
d12746bc JH |
1562 | { |
1563 | if (g->ptr == lim) return NULL; | |
f3ebb786 | 1564 | if (need > lim) |
d12746bc JH |
1565 | { |
1566 | truncated = TRUE; | |
1567 | width = precision = lim - g->ptr - 1; | |
1568 | if (width < 0) width = 0; | |
1569 | if (precision < 0) precision = 0; | |
1570 | } | |
1571 | } | |
f3ebb786 | 1572 | else if (need > lim) |
1100a343 | 1573 | { |
f3ebb786 | 1574 | gstring_grow(g, width); |
1100a343 JH |
1575 | lim = g->size - 1; |
1576 | gp = CS g->s + g->ptr; | |
1577 | } | |
d12746bc JH |
1578 | |
1579 | g->ptr += sprintf(gp, "%*.*s", width, precision, s); | |
1580 | if (fp[-1] == 'S') | |
1581 | while (*gp) { *gp = tolower(*gp); gp++; } | |
1582 | else if (fp[-1] == 'T') | |
1583 | while (*gp) { *gp = toupper(*gp); gp++; } | |
1584 | ||
1585 | if (truncated) return NULL; | |
1586 | break; | |
059ec3d9 | 1587 | } |
059ec3d9 PH |
1588 | |
1589 | /* Some things are never used in Exim; also catches junk. */ | |
1590 | ||
1591 | default: | |
d12746bc JH |
1592 | strncpy(newformat, item_start, fp - item_start); |
1593 | newformat[fp-item_start] = 0; | |
1594 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "string_format: unsupported type " | |
1595 | "in \"%s\" in \"%s\"", newformat, format); | |
1596 | break; | |
059ec3d9 PH |
1597 | } |
1598 | } | |
1599 | ||
f3ebb786 JH |
1600 | if (g->ptr > g->size) |
1601 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
1602 | "string_format internal error: caller %s %d", func, line); | |
d12746bc JH |
1603 | return g; |
1604 | } | |
059ec3d9 | 1605 | |
059ec3d9 | 1606 | |
d12746bc JH |
1607 | |
1608 | #ifndef COMPILE_UTILITY | |
059ec3d9 PH |
1609 | /************************************************* |
1610 | * Generate an "open failed" message * | |
1611 | *************************************************/ | |
1612 | ||
1613 | /* This function creates a message after failure to open a file. It includes a | |
1614 | string supplied as data, adds the strerror() text, and if the failure was | |
1615 | "Permission denied", reads and includes the euid and egid. | |
1616 | ||
1617 | Arguments: | |
1618 | eno the value of errno after the failure | |
1619 | format a text format string - deliberately not uschar * | |
1620 | ... arguments for the format string | |
1621 | ||
1622 | Returns: a message, in dynamic store | |
1623 | */ | |
1624 | ||
1625 | uschar * | |
f3ebb786 JH |
1626 | string_open_failed_trc(int eno, const uschar * func, unsigned line, |
1627 | const char *format, ...) | |
059ec3d9 PH |
1628 | { |
1629 | va_list ap; | |
d12746bc | 1630 | gstring * g = string_get(1024); |
059ec3d9 | 1631 | |
d12746bc | 1632 | g = string_catn(g, US"failed to open ", 15); |
059ec3d9 PH |
1633 | |
1634 | /* Use the checked formatting routine to ensure that the buffer | |
1635 | does not overflow. It should not, since this is called only for internally | |
1636 | specified messages. If it does, the message just gets truncated, and there | |
1637 | doesn't seem much we can do about that. */ | |
1638 | ||
d12746bc | 1639 | va_start(ap, format); |
f3ebb786 JH |
1640 | (void) string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE, |
1641 | 0, format, ap); | |
d12746bc | 1642 | string_from_gstring(g); |
e59797e3 | 1643 | gstring_release_unused(g); |
cb570b5e | 1644 | va_end(ap); |
059ec3d9 | 1645 | |
d12746bc JH |
1646 | return eno == EACCES |
1647 | ? string_sprintf("%s: %s (euid=%ld egid=%ld)", g->s, strerror(eno), | |
1648 | (long int)geteuid(), (long int)getegid()) | |
1649 | : string_sprintf("%s: %s", g->s, strerror(eno)); | |
059ec3d9 PH |
1650 | } |
1651 | #endif /* COMPILE_UTILITY */ | |
1652 | ||
1653 | ||
1654 | ||
059ec3d9 PH |
1655 | |
1656 | ||
bc3c7bb7 HSHR |
1657 | #ifndef COMPILE_UTILITY |
1658 | /* qsort(3), currently used to sort the environment variables | |
1659 | for -bP environment output, needs a function to compare two pointers to string | |
1660 | pointers. Here it is. */ | |
1661 | ||
1662 | int | |
84bbb4d8 | 1663 | string_compare_by_pointer(const void *a, const void *b) |
bc3c7bb7 | 1664 | { |
35a5627d | 1665 | return Ustrcmp(* CUSS a, * CUSS b); |
bc3c7bb7 HSHR |
1666 | } |
1667 | #endif /* COMPILE_UTILITY */ | |
059ec3d9 PH |
1668 | |
1669 | ||
1670 | ||
d12746bc | 1671 | |
059ec3d9 PH |
1672 | /************************************************* |
1673 | ************************************************** | |
1674 | * Stand-alone test program * | |
1675 | ************************************************** | |
1676 | *************************************************/ | |
1677 | ||
1678 | #ifdef STAND_ALONE | |
1679 | int main(void) | |
1680 | { | |
1681 | uschar buffer[256]; | |
1682 | ||
1683 | printf("Testing is_ip_address\n"); | |
1684 | ||
1685 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1686 | { | |
1687 | int offset; | |
1688 | buffer[Ustrlen(buffer) - 1] = 0; | |
1689 | printf("%d\n", string_is_ip_address(buffer, NULL)); | |
1690 | printf("%d %d %s\n", string_is_ip_address(buffer, &offset), offset, buffer); | |
1691 | } | |
1692 | ||
1693 | printf("Testing string_nextinlist\n"); | |
1694 | ||
1695 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1696 | { | |
1697 | uschar *list = buffer; | |
1698 | uschar *lp1, *lp2; | |
1699 | uschar item[256]; | |
1700 | int sep1 = 0; | |
1701 | int sep2 = 0; | |
1702 | ||
1703 | if (*list == '<') | |
1704 | { | |
1705 | sep1 = sep2 = list[1]; | |
1706 | list += 2; | |
1707 | } | |
1708 | ||
1709 | lp1 = lp2 = list; | |
1710 | for (;;) | |
1711 | { | |
1712 | uschar *item1 = string_nextinlist(&lp1, &sep1, item, sizeof(item)); | |
1713 | uschar *item2 = string_nextinlist(&lp2, &sep2, NULL, 0); | |
1714 | ||
1715 | if (item1 == NULL && item2 == NULL) break; | |
1716 | if (item == NULL || item2 == NULL || Ustrcmp(item1, item2) != 0) | |
1717 | { | |
1718 | printf("***ERROR\nitem1=\"%s\"\nitem2=\"%s\"\n", | |
1719 | (item1 == NULL)? "NULL" : CS item1, | |
1720 | (item2 == NULL)? "NULL" : CS item2); | |
1721 | break; | |
1722 | } | |
1723 | else printf(" \"%s\"\n", CS item1); | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | /* This is a horrible lash-up, but it serves its purpose. */ | |
1728 | ||
1729 | printf("Testing string_format\n"); | |
1730 | ||
1731 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1732 | { | |
1733 | void *args[3]; | |
ed72ace5 | 1734 | long long llargs[3]; |
059ec3d9 PH |
1735 | double dargs[3]; |
1736 | int dflag = 0; | |
ed72ace5 | 1737 | int llflag = 0; |
059ec3d9 PH |
1738 | int n = 0; |
1739 | int count; | |
1740 | int countset = 0; | |
1741 | uschar format[256]; | |
1742 | uschar outbuf[256]; | |
1743 | uschar *s; | |
1744 | buffer[Ustrlen(buffer) - 1] = 0; | |
1745 | ||
1746 | s = Ustrchr(buffer, ','); | |
1747 | if (s == NULL) s = buffer + Ustrlen(buffer); | |
1748 | ||
1749 | Ustrncpy(format, buffer, s - buffer); | |
1750 | format[s-buffer] = 0; | |
1751 | ||
1752 | if (*s == ',') s++; | |
1753 | ||
1754 | while (*s != 0) | |
1755 | { | |
1756 | uschar *ss = s; | |
1757 | s = Ustrchr(ss, ','); | |
1758 | if (s == NULL) s = ss + Ustrlen(ss); | |
1759 | ||
1760 | if (isdigit(*ss)) | |
1761 | { | |
1762 | Ustrncpy(outbuf, ss, s-ss); | |
1763 | if (Ustrchr(outbuf, '.') != NULL) | |
1764 | { | |
1765 | dflag = 1; | |
1766 | dargs[n++] = Ustrtod(outbuf, NULL); | |
1767 | } | |
ed72ace5 PH |
1768 | else if (Ustrstr(outbuf, "ll") != NULL) |
1769 | { | |
1770 | llflag = 1; | |
1771 | llargs[n++] = strtoull(CS outbuf, NULL, 10); | |
1772 | } | |
059ec3d9 PH |
1773 | else |
1774 | { | |
1775 | args[n++] = (void *)Uatoi(outbuf); | |
1776 | } | |
1777 | } | |
1778 | ||
1779 | else if (Ustrcmp(ss, "*") == 0) | |
1780 | { | |
1781 | args[n++] = (void *)(&count); | |
1782 | countset = 1; | |
1783 | } | |
1784 | ||
1785 | else | |
1786 | { | |
1787 | uschar *sss = malloc(s - ss + 1); | |
1788 | Ustrncpy(sss, ss, s-ss); | |
1789 | args[n++] = sss; | |
1790 | } | |
1791 | ||
1792 | if (*s == ',') s++; | |
1793 | } | |
1794 | ||
ed72ace5 PH |
1795 | if (!dflag && !llflag) |
1796 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1797 | args[0], args[1], args[2])? "True" : "False"); | |
1798 | ||
1799 | else if (dflag) | |
1800 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1801 | dargs[0], dargs[1], dargs[2])? "True" : "False"); | |
059ec3d9 PH |
1802 | |
1803 | else printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
ed72ace5 | 1804 | llargs[0], llargs[1], llargs[2])? "True" : "False"); |
059ec3d9 PH |
1805 | |
1806 | printf("%s\n", CS outbuf); | |
1807 | if (countset) printf("count=%d\n", count); | |
1808 | } | |
1809 | ||
1810 | return 0; | |
1811 | } | |
1812 | #endif | |
1813 | ||
1814 | /* End of string.c */ |