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 | 14 | |
f3ebb786 | 15 | static void gstring_rebuffer(gstring * g); |
059ec3d9 PH |
16 | |
17 | #ifndef COMPILE_UTILITY | |
18 | /************************************************* | |
19 | * Test for IP address * | |
20 | *************************************************/ | |
21 | ||
22 | /* This used just to be a regular expression, but with IPv6 things are a bit | |
23 | more complicated. If the address contains a colon, it is assumed to be a v6 | |
24 | address (assuming HAVE_IPV6 is set). If a mask is permitted and one is present, | |
25 | and maskptr is not NULL, its offset is placed there. | |
26 | ||
27 | Arguments: | |
28 | s a string | |
29 | maskptr NULL if no mask is permitted to follow | |
30 | otherwise, points to an int where the offset of '/' is placed | |
1688f43b | 31 | if there is no / followed by trailing digits, *maskptr is set 0 |
059ec3d9 PH |
32 | |
33 | Returns: 0 if the string is not a textual representation of an IP address | |
34 | 4 if it is an IPv4 address | |
35 | 6 if it is an IPv6 address | |
36 | */ | |
37 | ||
38 | int | |
b1f8e4f8 | 39 | string_is_ip_address(const uschar *s, int *maskptr) |
059ec3d9 | 40 | { |
059ec3d9 PH |
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; | |
059ec3d9 PH |
63 | |
64 | yield = 6; | |
65 | ||
66 | /* An IPv6 address must start with hex digit or double colon. A single | |
67 | colon is invalid. */ | |
68 | ||
69 | if (*s == ':' && *(++s) != ':') return 0; | |
70 | ||
71 | /* Now read up to 8 components consisting of up to 4 hex digits each. There | |
72 | may be one and only one appearance of double colon, which implies any number | |
73 | of binary zero bits. The number of preceding components is held in count. */ | |
74 | ||
d7978c0f | 75 | for (int count = 0; count < 8; count++) |
059ec3d9 PH |
76 | { |
77 | /* If the end of the string is reached before reading 8 components, the | |
78 | address is valid provided a double colon has been read. This also applies | |
79 | if we hit the / that introduces a mask or the % that introduces the | |
80 | interface specifier (scope id) of a link-local address. */ | |
81 | ||
8d909960 | 82 | if (*s == 0 || *s == '%' || *s == '/') return had_double_colon ? yield : 0; |
059ec3d9 PH |
83 | |
84 | /* If a component starts with an additional colon, we have hit a double | |
85 | colon. This is permitted to appear once only, and counts as at least | |
86 | one component. The final component may be of this form. */ | |
87 | ||
88 | if (*s == ':') | |
89 | { | |
90 | if (had_double_colon) return 0; | |
91 | had_double_colon = TRUE; | |
92 | s++; | |
93 | continue; | |
94 | } | |
95 | ||
96 | /* If the remainder of the string contains a dot but no colons, we | |
97 | can expect a trailing IPv4 address. This is valid if either there has | |
98 | been no double-colon and this is the 7th component (with the IPv4 address | |
99 | being the 7th & 8th components), OR if there has been a double-colon | |
100 | and fewer than 6 components. */ | |
101 | ||
102 | if (Ustrchr(s, ':') == NULL && Ustrchr(s, '.') != NULL) | |
103 | { | |
104 | if ((!had_double_colon && count != 6) || | |
105 | (had_double_colon && count > 6)) return 0; | |
106 | v4end = TRUE; | |
107 | yield = 6; | |
108 | break; | |
109 | } | |
110 | ||
111 | /* Check for at least one and not more than 4 hex digits for this | |
112 | component. */ | |
113 | ||
114 | if (!isxdigit(*s++)) return 0; | |
115 | if (isxdigit(*s) && isxdigit(*(++s)) && isxdigit(*(++s))) s++; | |
116 | ||
117 | /* If the component is terminated by colon and there is more to | |
118 | follow, skip over the colon. If there is no more to follow the address is | |
119 | invalid. */ | |
120 | ||
121 | if (*s == ':' && *(++s) == 0) return 0; | |
122 | } | |
123 | ||
124 | /* If about to handle a trailing IPv4 address, drop through. Otherwise | |
125 | all is well if we are at the end of the string or at the mask or at a percent | |
126 | sign, which introduces the interface specifier (scope id) of a link local | |
127 | address. */ | |
128 | ||
1688f43b PH |
129 | if (!v4end) |
130 | return (*s == 0 || *s == '%' || | |
131 | (*s == '/' && maskptr != NULL && *maskptr != 0))? yield : 0; | |
059ec3d9 PH |
132 | } |
133 | ||
134 | /* Test for IPv4 address, which may be the tail-end of an IPv6 address. */ | |
135 | ||
d7978c0f | 136 | for (int i = 0; i < 4; i++) |
059ec3d9 | 137 | { |
8d909960 JH |
138 | long n; |
139 | uschar * end; | |
140 | ||
059ec3d9 | 141 | if (i != 0 && *s++ != '.') return 0; |
8d909960 JH |
142 | n = strtol(CCS s, CSS &end, 10); |
143 | if (n > 255 || n < 0 || end <= s || end > s+3) return 0; | |
144 | s = end; | |
059ec3d9 PH |
145 | } |
146 | ||
8d909960 | 147 | return !*s || (*s == '/' && maskptr && *maskptr != 0) ? yield : 0; |
059ec3d9 PH |
148 | } |
149 | #endif /* COMPILE_UTILITY */ | |
150 | ||
151 | ||
152 | /************************************************* | |
153 | * Format message size * | |
154 | *************************************************/ | |
155 | ||
156 | /* Convert a message size in bytes to printing form, rounding | |
157 | according to the magnitude of the number. A value of zero causes | |
158 | a string of spaces to be returned. | |
159 | ||
160 | Arguments: | |
161 | size the message size in bytes | |
162 | buffer where to put the answer | |
163 | ||
164 | Returns: pointer to the buffer | |
165 | a string of exactly 5 characters is normally returned | |
166 | */ | |
167 | ||
168 | uschar * | |
169 | string_format_size(int size, uschar *buffer) | |
170 | { | |
f3ebb786 | 171 | if (size == 0) Ustrcpy(buffer, US" "); |
059ec3d9 PH |
172 | else if (size < 1024) sprintf(CS buffer, "%5d", size); |
173 | else if (size < 10*1024) | |
174 | sprintf(CS buffer, "%4.1fK", (double)size / 1024.0); | |
175 | else if (size < 1024*1024) | |
176 | sprintf(CS buffer, "%4dK", (size + 512)/1024); | |
177 | else if (size < 10*1024*1024) | |
178 | sprintf(CS buffer, "%4.1fM", (double)size / (1024.0 * 1024.0)); | |
179 | else | |
180 | sprintf(CS buffer, "%4dM", (size + 512 * 1024)/(1024*1024)); | |
181 | return buffer; | |
182 | } | |
183 | ||
184 | ||
185 | ||
186 | #ifndef COMPILE_UTILITY | |
187 | /************************************************* | |
188 | * Convert a number to base 62 format * | |
189 | *************************************************/ | |
190 | ||
191 | /* Convert a long integer into an ASCII base 62 string. For Cygwin the value of | |
192 | BASE_62 is actually 36. Always return exactly 6 characters plus zero, in a | |
193 | static area. | |
194 | ||
195 | Argument: a long integer | |
196 | Returns: pointer to base 62 string | |
197 | */ | |
198 | ||
199 | uschar * | |
200 | string_base62(unsigned long int value) | |
201 | { | |
202 | static uschar yield[7]; | |
203 | uschar *p = yield + sizeof(yield) - 1; | |
204 | *p = 0; | |
205 | while (p > yield) | |
206 | { | |
207 | *(--p) = base62_chars[value % BASE_62]; | |
208 | value /= BASE_62; | |
209 | } | |
210 | return yield; | |
211 | } | |
212 | #endif /* COMPILE_UTILITY */ | |
213 | ||
214 | ||
215 | ||
059ec3d9 PH |
216 | /************************************************* |
217 | * Interpret escape sequence * | |
218 | *************************************************/ | |
219 | ||
220 | /* This function is called from several places where escape sequences are to be | |
221 | interpreted in strings. | |
222 | ||
223 | Arguments: | |
224 | pp points a pointer to the initiating "\" in the string; | |
225 | the pointer gets updated to point to the final character | |
c3aefacc HSHR |
226 | If the backslash is the last character in the string, it |
227 | is not interpreted. | |
059ec3d9 PH |
228 | Returns: the value of the character escape |
229 | */ | |
230 | ||
231 | int | |
55414b25 | 232 | string_interpret_escape(const uschar **pp) |
059ec3d9 | 233 | { |
3fb3c68d JH |
234 | #ifdef COMPILE_UTILITY |
235 | const uschar *hex_digits= CUS"0123456789abcdef"; | |
236 | #endif | |
059ec3d9 | 237 | int ch; |
55414b25 | 238 | const uschar *p = *pp; |
059ec3d9 | 239 | ch = *(++p); |
c3aefacc | 240 | if (ch == '\0') return **pp; |
059ec3d9 PH |
241 | if (isdigit(ch) && ch != '8' && ch != '9') |
242 | { | |
243 | ch -= '0'; | |
244 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
245 | { | |
246 | ch = ch * 8 + *(++p) - '0'; | |
247 | if (isdigit(p[1]) && p[1] != '8' && p[1] != '9') | |
248 | ch = ch * 8 + *(++p) - '0'; | |
249 | } | |
250 | } | |
251 | else switch(ch) | |
252 | { | |
c7396ac5 PP |
253 | case 'b': ch = '\b'; break; |
254 | case 'f': ch = '\f'; break; | |
059ec3d9 PH |
255 | case 'n': ch = '\n'; break; |
256 | case 'r': ch = '\r'; break; | |
257 | case 't': ch = '\t'; break; | |
c7396ac5 | 258 | case 'v': ch = '\v'; break; |
059ec3d9 PH |
259 | case 'x': |
260 | ch = 0; | |
261 | if (isxdigit(p[1])) | |
262 | { | |
263 | ch = ch * 16 + | |
264 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
265 | if (isxdigit(p[1])) ch = ch * 16 + | |
266 | Ustrchr(hex_digits, tolower(*(++p))) - hex_digits; | |
267 | } | |
268 | break; | |
269 | } | |
270 | *pp = p; | |
271 | return ch; | |
272 | } | |
059ec3d9 PH |
273 | |
274 | ||
275 | ||
276 | #ifndef COMPILE_UTILITY | |
277 | /************************************************* | |
278 | * Ensure string is printable * | |
279 | *************************************************/ | |
280 | ||
281 | /* This function is called for critical strings. It checks for any | |
282 | non-printing characters, and if any are found, it makes a new copy | |
283 | of the string with suitable escape sequences. It is most often called by the | |
284 | macro string_printing(), which sets allow_tab TRUE. | |
285 | ||
286 | Arguments: | |
287 | s the input string | |
288 | allow_tab TRUE to allow tab as a printing character | |
289 | ||
290 | Returns: string with non-printers encoded as printing sequences | |
291 | */ | |
292 | ||
55414b25 JH |
293 | const uschar * |
294 | string_printing2(const uschar *s, BOOL allow_tab) | |
059ec3d9 PH |
295 | { |
296 | int nonprintcount = 0; | |
297 | int length = 0; | |
55414b25 | 298 | const uschar *t = s; |
059ec3d9 PH |
299 | uschar *ss, *tt; |
300 | ||
301 | while (*t != 0) | |
302 | { | |
303 | int c = *t++; | |
304 | if (!mac_isprint(c) || (!allow_tab && c == '\t')) nonprintcount++; | |
305 | length++; | |
306 | } | |
307 | ||
308 | if (nonprintcount == 0) return s; | |
309 | ||
310 | /* Get a new block of store guaranteed big enough to hold the | |
311 | expanded string. */ | |
312 | ||
f3ebb786 | 313 | ss = store_get(length + nonprintcount * 3 + 1, is_tainted(s)); |
059ec3d9 | 314 | |
4c04137d | 315 | /* Copy everything, escaping non printers. */ |
059ec3d9 PH |
316 | |
317 | t = s; | |
318 | tt = ss; | |
319 | ||
320 | while (*t != 0) | |
321 | { | |
322 | int c = *t; | |
323 | if (mac_isprint(c) && (allow_tab || c != '\t')) *tt++ = *t++; else | |
324 | { | |
325 | *tt++ = '\\'; | |
326 | switch (*t) | |
327 | { | |
328 | case '\n': *tt++ = 'n'; break; | |
329 | case '\r': *tt++ = 'r'; break; | |
330 | case '\b': *tt++ = 'b'; break; | |
331 | case '\v': *tt++ = 'v'; break; | |
332 | case '\f': *tt++ = 'f'; break; | |
333 | case '\t': *tt++ = 't'; break; | |
334 | default: sprintf(CS tt, "%03o", *t); tt += 3; break; | |
335 | } | |
336 | t++; | |
337 | } | |
338 | } | |
339 | *tt = 0; | |
c7396ac5 PP |
340 | return ss; |
341 | } | |
79fe97d8 PP |
342 | #endif /* COMPILE_UTILITY */ |
343 | ||
c7396ac5 PP |
344 | /************************************************* |
345 | * Undo printing escapes in string * | |
346 | *************************************************/ | |
347 | ||
348 | /* This function is the reverse of string_printing2. It searches for | |
349 | backslash characters and if any are found, it makes a new copy of the | |
350 | string with escape sequences parsed. Otherwise it returns the original | |
351 | string. | |
352 | ||
353 | Arguments: | |
354 | s the input string | |
355 | ||
356 | Returns: string with printing escapes parsed back | |
357 | */ | |
358 | ||
359 | uschar * | |
360 | string_unprinting(uschar *s) | |
361 | { | |
362 | uschar *p, *q, *r, *ss; | |
363 | int len, off; | |
364 | ||
365 | p = Ustrchr(s, '\\'); | |
366 | if (!p) return s; | |
367 | ||
368 | len = Ustrlen(s) + 1; | |
f3ebb786 | 369 | ss = store_get(len, is_tainted(s)); |
c7396ac5 PP |
370 | |
371 | q = ss; | |
372 | off = p - s; | |
373 | if (off) | |
374 | { | |
375 | memcpy(q, s, off); | |
376 | q += off; | |
377 | } | |
378 | ||
379 | while (*p) | |
380 | { | |
381 | if (*p == '\\') | |
382 | { | |
55414b25 | 383 | *q++ = string_interpret_escape((const uschar **)&p); |
823ad74f | 384 | p++; |
c7396ac5 PP |
385 | } |
386 | else | |
387 | { | |
388 | r = Ustrchr(p, '\\'); | |
389 | if (!r) | |
390 | { | |
391 | off = Ustrlen(p); | |
392 | memcpy(q, p, off); | |
393 | p += off; | |
394 | q += off; | |
395 | break; | |
396 | } | |
397 | else | |
398 | { | |
399 | off = r - p; | |
400 | memcpy(q, p, off); | |
401 | q += off; | |
402 | p = r; | |
403 | } | |
404 | } | |
405 | } | |
406 | *q = '\0'; | |
407 | ||
059ec3d9 PH |
408 | return ss; |
409 | } | |
059ec3d9 PH |
410 | |
411 | ||
412 | ||
413 | ||
bf13aee1 JH |
414 | #if (defined(HAVE_LOCAL_SCAN) || defined(EXPAND_DLFUNC)) \ |
415 | && !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY) | |
059ec3d9 PH |
416 | /************************************************* |
417 | * Copy and save string * | |
418 | *************************************************/ | |
419 | ||
f3ebb786 | 420 | /* |
059ec3d9 | 421 | Argument: string to copy |
f3ebb786 | 422 | Returns: copy of string in new store with the same taint status |
059ec3d9 PH |
423 | */ |
424 | ||
425 | uschar * | |
e59797e3 | 426 | string_copy_function(const uschar *s) |
059ec3d9 | 427 | { |
f3ebb786 JH |
428 | return string_copy_taint(s, is_tainted(s)); |
429 | } | |
430 | ||
431 | /* This function assumes that memcpy() is faster than strcpy(). | |
432 | As above, but explicitly specifying the result taint status | |
433 | */ | |
434 | ||
435 | uschar * | |
d48326c0 | 436 | string_copy_taint_function(const uschar * s, BOOL tainted) |
f3ebb786 | 437 | { |
059ec3d9 | 438 | int len = Ustrlen(s) + 1; |
f3ebb786 | 439 | uschar *ss = store_get(len, tainted); |
059ec3d9 PH |
440 | memcpy(ss, s, len); |
441 | return ss; | |
442 | } | |
443 | ||
444 | ||
f3ebb786 | 445 | |
059ec3d9 PH |
446 | /************************************************* |
447 | * Copy and save string, given length * | |
448 | *************************************************/ | |
449 | ||
450 | /* It is assumed the data contains no zeros. A zero is added | |
451 | onto the end. | |
452 | ||
453 | Arguments: | |
454 | s string to copy | |
455 | n number of characters | |
456 | ||
457 | Returns: copy of string in new store | |
458 | */ | |
459 | ||
460 | uschar * | |
e59797e3 | 461 | string_copyn_function(const uschar *s, int n) |
059ec3d9 | 462 | { |
f3ebb786 | 463 | uschar *ss = store_get(n + 1, is_tainted(s)); |
059ec3d9 PH |
464 | Ustrncpy(ss, s, n); |
465 | ss[n] = 0; | |
466 | return ss; | |
467 | } | |
e59797e3 | 468 | #endif |
059ec3d9 PH |
469 | |
470 | ||
471 | /************************************************* | |
e59797e3 | 472 | * Copy and save string in malloc'd store * |
059ec3d9 PH |
473 | *************************************************/ |
474 | ||
e59797e3 | 475 | /* This function assumes that memcpy() is faster than strcpy(). |
059ec3d9 | 476 | |
e59797e3 JH |
477 | Argument: string to copy |
478 | Returns: copy of string in new store | |
059ec3d9 PH |
479 | */ |
480 | ||
481 | uschar * | |
e59797e3 | 482 | string_copy_malloc(const uschar *s) |
059ec3d9 | 483 | { |
e59797e3 JH |
484 | int len = Ustrlen(s) + 1; |
485 | uschar *ss = store_malloc(len); | |
486 | memcpy(ss, s, len); | |
059ec3d9 PH |
487 | return ss; |
488 | } | |
489 | ||
490 | ||
491 | ||
e28326d8 PH |
492 | /************************************************* |
493 | * Copy string if long, inserting newlines * | |
494 | *************************************************/ | |
495 | ||
496 | /* If the given string is longer than 75 characters, it is copied, and within | |
497 | the copy, certain space characters are converted into newlines. | |
498 | ||
499 | Argument: pointer to the string | |
500 | Returns: pointer to the possibly altered string | |
501 | */ | |
502 | ||
503 | uschar * | |
504 | string_split_message(uschar *msg) | |
505 | { | |
506 | uschar *s, *ss; | |
507 | ||
508 | if (msg == NULL || Ustrlen(msg) <= 75) return msg; | |
509 | s = ss = msg = string_copy(msg); | |
510 | ||
511 | for (;;) | |
512 | { | |
513 | int i = 0; | |
514 | while (i < 75 && *ss != 0 && *ss != '\n') ss++, i++; | |
515 | if (*ss == 0) break; | |
516 | if (*ss == '\n') | |
517 | s = ++ss; | |
518 | else | |
519 | { | |
520 | uschar *t = ss + 1; | |
521 | uschar *tt = NULL; | |
522 | while (--t > s + 35) | |
523 | { | |
524 | if (*t == ' ') | |
525 | { | |
526 | if (t[-1] == ':') { tt = t; break; } | |
527 | if (tt == NULL) tt = t; | |
528 | } | |
529 | } | |
530 | ||
531 | if (tt == NULL) /* Can't split behind - try ahead */ | |
532 | { | |
533 | t = ss + 1; | |
534 | while (*t != 0) | |
535 | { | |
536 | if (*t == ' ' || *t == '\n') | |
537 | { tt = t; break; } | |
538 | t++; | |
539 | } | |
540 | } | |
541 | ||
542 | if (tt == NULL) break; /* Can't find anywhere to split */ | |
543 | *tt = '\n'; | |
544 | s = ss = tt+1; | |
545 | } | |
546 | } | |
547 | ||
548 | return msg; | |
549 | } | |
550 | ||
551 | ||
552 | ||
059ec3d9 PH |
553 | /************************************************* |
554 | * Copy returned DNS domain name, de-escaping * | |
555 | *************************************************/ | |
556 | ||
557 | /* If a domain name contains top-bit characters, some resolvers return | |
558 | the fully qualified name with those characters turned into escapes. The | |
559 | convention is a backslash followed by _decimal_ digits. We convert these | |
560 | back into the original binary values. This will be relevant when | |
561 | allow_utf8_domains is set true and UTF-8 characters are used in domain | |
562 | names. Backslash can also be used to escape other characters, though we | |
563 | shouldn't come across them in domain names. | |
564 | ||
565 | Argument: the domain name string | |
566 | Returns: copy of string in new store, de-escaped | |
567 | */ | |
568 | ||
569 | uschar * | |
570 | string_copy_dnsdomain(uschar *s) | |
571 | { | |
572 | uschar *yield; | |
f3ebb786 | 573 | uschar *ss = yield = store_get(Ustrlen(s) + 1, is_tainted(s)); |
059ec3d9 PH |
574 | |
575 | while (*s != 0) | |
576 | { | |
577 | if (*s != '\\') | |
578 | { | |
579 | *ss++ = *s++; | |
580 | } | |
581 | else if (isdigit(s[1])) | |
582 | { | |
583 | *ss++ = (s[1] - '0')*100 + (s[2] - '0')*10 + s[3] - '0'; | |
584 | s += 4; | |
585 | } | |
586 | else if (*(++s) != 0) | |
587 | { | |
588 | *ss++ = *s++; | |
589 | } | |
590 | } | |
591 | ||
592 | *ss = 0; | |
593 | return yield; | |
594 | } | |
595 | ||
596 | ||
597 | #ifndef COMPILE_UTILITY | |
598 | /************************************************* | |
599 | * Copy space-terminated or quoted string * | |
600 | *************************************************/ | |
601 | ||
602 | /* This function copies from a string until its end, or until whitespace is | |
603 | encountered, unless the string begins with a double quote, in which case the | |
604 | terminating quote is sought, and escaping within the string is done. The length | |
605 | of a de-quoted string can be no longer than the original, since escaping always | |
606 | turns n characters into 1 character. | |
607 | ||
608 | Argument: pointer to the pointer to the first character, which gets updated | |
609 | Returns: the new string | |
610 | */ | |
611 | ||
612 | uschar * | |
55414b25 | 613 | string_dequote(const uschar **sptr) |
059ec3d9 | 614 | { |
55414b25 | 615 | const uschar *s = *sptr; |
059ec3d9 PH |
616 | uschar *t, *yield; |
617 | ||
618 | /* First find the end of the string */ | |
619 | ||
620 | if (*s != '\"') | |
059ec3d9 | 621 | while (*s != 0 && !isspace(*s)) s++; |
059ec3d9 PH |
622 | else |
623 | { | |
624 | s++; | |
8c513105 | 625 | while (*s && *s != '\"') |
059ec3d9 PH |
626 | { |
627 | if (*s == '\\') (void)string_interpret_escape(&s); | |
628 | s++; | |
629 | } | |
8c513105 | 630 | if (*s) s++; |
059ec3d9 PH |
631 | } |
632 | ||
633 | /* Get enough store to copy into */ | |
634 | ||
f3ebb786 | 635 | t = yield = store_get(s - *sptr + 1, is_tainted(*sptr)); |
059ec3d9 PH |
636 | s = *sptr; |
637 | ||
638 | /* Do the copy */ | |
639 | ||
640 | if (*s != '\"') | |
059ec3d9 | 641 | while (*s != 0 && !isspace(*s)) *t++ = *s++; |
059ec3d9 PH |
642 | else |
643 | { | |
644 | s++; | |
645 | while (*s != 0 && *s != '\"') | |
646 | { | |
f3ebb786 | 647 | *t++ = *s == '\\' ? string_interpret_escape(&s) : *s; |
059ec3d9 PH |
648 | s++; |
649 | } | |
f3ebb786 | 650 | if (*s) s++; |
059ec3d9 PH |
651 | } |
652 | ||
653 | /* Update the pointer and return the terminated copy */ | |
654 | ||
655 | *sptr = s; | |
656 | *t = 0; | |
657 | return yield; | |
658 | } | |
659 | #endif /* COMPILE_UTILITY */ | |
660 | ||
661 | ||
662 | ||
663 | /************************************************* | |
664 | * Format a string and save it * | |
665 | *************************************************/ | |
666 | ||
94759fce | 667 | /* The formatting is done by string_vformat, which checks the length of |
13e70f55 | 668 | everything. Taint is taken from the worst of the arguments. |
059ec3d9 PH |
669 | |
670 | Arguments: | |
671 | format a printf() format - deliberately char * rather than uschar * | |
672 | because it will most usually be a literal string | |
673 | ... arguments for format | |
674 | ||
675 | Returns: pointer to fresh piece of store containing sprintf'ed string | |
676 | */ | |
677 | ||
678 | uschar * | |
f3ebb786 | 679 | string_sprintf_trc(const char *format, const uschar * func, unsigned line, ...) |
059ec3d9 | 680 | { |
8aa16eb7 JH |
681 | #ifdef COMPILE_UTILITY |
682 | uschar buffer[STRING_SPRINTF_BUFFER_SIZE]; | |
683 | gstring gs = { .size = STRING_SPRINTF_BUFFER_SIZE, .ptr = 0, .s = buffer }; | |
684 | gstring * g = &gs; | |
685 | unsigned flags = 0; | |
686 | #else | |
687 | gstring * g = NULL; | |
688 | unsigned flags = SVFMT_REBUFFER|SVFMT_EXTEND; | |
689 | #endif | |
d12746bc | 690 | |
8aa16eb7 | 691 | va_list ap; |
f3ebb786 | 692 | va_start(ap, line); |
8aa16eb7 JH |
693 | g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE, |
694 | flags, format, ap); | |
059ec3d9 | 695 | va_end(ap); |
d12746bc | 696 | |
f3ebb786 | 697 | if (!g) |
d12746bc JH |
698 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
699 | "string_sprintf expansion was longer than %d; format string was (%s)\n" | |
f3ebb786 JH |
700 | " called from %s %d\n", |
701 | STRING_SPRINTF_BUFFER_SIZE, format, func, line); | |
d12746bc | 702 | |
8aa16eb7 JH |
703 | #ifdef COMPILE_UTILITY |
704 | return string_copyn(g->s, g->ptr); | |
705 | #else | |
f3ebb786 JH |
706 | gstring_release_unused(g); |
707 | return string_from_gstring(g); | |
8aa16eb7 | 708 | #endif |
059ec3d9 PH |
709 | } |
710 | ||
711 | ||
712 | ||
713 | /************************************************* | |
714 | * Case-independent strncmp() function * | |
715 | *************************************************/ | |
716 | ||
717 | /* | |
718 | Arguments: | |
719 | s first string | |
720 | t second string | |
721 | n number of characters to compare | |
722 | ||
723 | Returns: < 0, = 0, or > 0, according to the comparison | |
724 | */ | |
725 | ||
726 | int | |
1ba28e2b | 727 | strncmpic(const uschar *s, const uschar *t, int n) |
059ec3d9 PH |
728 | { |
729 | while (n--) | |
730 | { | |
731 | int c = tolower(*s++) - tolower(*t++); | |
732 | if (c) return c; | |
733 | } | |
734 | return 0; | |
735 | } | |
736 | ||
737 | ||
738 | /************************************************* | |
739 | * Case-independent strcmp() function * | |
740 | *************************************************/ | |
741 | ||
742 | /* | |
743 | Arguments: | |
744 | s first string | |
745 | t second string | |
746 | ||
747 | Returns: < 0, = 0, or > 0, according to the comparison | |
748 | */ | |
749 | ||
750 | int | |
1ba28e2b | 751 | strcmpic(const uschar *s, const uschar *t) |
059ec3d9 PH |
752 | { |
753 | while (*s != 0) | |
754 | { | |
755 | int c = tolower(*s++) - tolower(*t++); | |
756 | if (c != 0) return c; | |
757 | } | |
758 | return *t; | |
759 | } | |
760 | ||
761 | ||
762 | /************************************************* | |
763 | * Case-independent strstr() function * | |
764 | *************************************************/ | |
765 | ||
766 | /* The third argument specifies whether whitespace is required | |
767 | to follow the matched string. | |
768 | ||
769 | Arguments: | |
770 | s string to search | |
771 | t substring to search for | |
772 | space_follows if TRUE, match only if whitespace follows | |
773 | ||
774 | Returns: pointer to substring in string, or NULL if not found | |
775 | */ | |
776 | ||
777 | uschar * | |
778 | strstric(uschar *s, uschar *t, BOOL space_follows) | |
779 | { | |
780 | uschar *p = t; | |
781 | uschar *yield = NULL; | |
782 | int cl = tolower(*p); | |
783 | int cu = toupper(*p); | |
784 | ||
785 | while (*s) | |
786 | { | |
787 | if (*s == cl || *s == cu) | |
788 | { | |
789 | if (yield == NULL) yield = s; | |
790 | if (*(++p) == 0) | |
791 | { | |
792 | if (!space_follows || s[1] == ' ' || s[1] == '\n' ) return yield; | |
793 | yield = NULL; | |
794 | p = t; | |
795 | } | |
796 | cl = tolower(*p); | |
797 | cu = toupper(*p); | |
798 | s++; | |
799 | } | |
800 | else if (yield != NULL) | |
801 | { | |
802 | yield = NULL; | |
803 | p = t; | |
804 | cl = tolower(*p); | |
805 | cu = toupper(*p); | |
806 | } | |
807 | else s++; | |
808 | } | |
809 | return NULL; | |
810 | } | |
811 | ||
812 | ||
813 | ||
d12746bc JH |
814 | #ifdef COMPILE_UTILITY |
815 | /* Dummy version for this function; it should never be called */ | |
816 | static void | |
f3ebb786 | 817 | gstring_grow(gstring * g, int count) |
d12746bc JH |
818 | { |
819 | assert(FALSE); | |
820 | } | |
821 | #endif | |
822 | ||
823 | ||
824 | ||
059ec3d9 PH |
825 | #ifndef COMPILE_UTILITY |
826 | /************************************************* | |
827 | * Get next string from separated list * | |
828 | *************************************************/ | |
829 | ||
830 | /* Leading and trailing space is removed from each item. The separator in the | |
831 | list is controlled by the int pointed to by the separator argument as follows: | |
832 | ||
ec95d1a6 PH |
833 | If the value is > 0 it is used as the separator. This is typically used for |
834 | sublists such as slash-separated options. The value is always a printing | |
835 | character. | |
836 | ||
837 | (If the value is actually > UCHAR_MAX there is only one item in the list. | |
059ec3d9 PH |
838 | This is used for some cases when called via functions that sometimes |
839 | plough through lists, and sometimes are given single items.) | |
059ec3d9 | 840 | |
ec95d1a6 PH |
841 | If the value is <= 0, the string is inspected for a leading <x, where x is an |
842 | ispunct() or an iscntrl() character. If found, x is used as the separator. If | |
843 | not found: | |
844 | ||
845 | (a) if separator == 0, ':' is used | |
846 | (b) if separator <0, -separator is used | |
847 | ||
848 | In all cases the value of the separator that is used is written back to the | |
849 | int so that it is used on subsequent calls as we progress through the list. | |
850 | ||
851 | A literal ispunct() separator can be represented in an item by doubling, but | |
852 | there is no way to include an iscntrl() separator as part of the data. | |
059ec3d9 PH |
853 | |
854 | Arguments: | |
855 | listptr points to a pointer to the current start of the list; the | |
856 | pointer gets updated to point after the end of the next item | |
857 | separator a pointer to the separator character in an int (see above) | |
858 | buffer where to put a copy of the next string in the list; or | |
859 | NULL if the next string is returned in new memory | |
860 | buflen when buffer is not NULL, the size of buffer; otherwise ignored | |
861 | ||
862 | Returns: pointer to buffer, containing the next substring, | |
863 | or NULL if no more substrings | |
864 | */ | |
865 | ||
866 | uschar * | |
55414b25 | 867 | string_nextinlist(const uschar **listptr, int *separator, uschar *buffer, int buflen) |
059ec3d9 | 868 | { |
55414b25 JH |
869 | int sep = *separator; |
870 | const uschar *s = *listptr; | |
ec95d1a6 | 871 | BOOL sep_is_special; |
059ec3d9 | 872 | |
8b455685 | 873 | if (!s) return NULL; |
ec95d1a6 PH |
874 | |
875 | /* This allows for a fixed specified separator to be an iscntrl() character, | |
876 | but at the time of implementation, this is never the case. However, it's best | |
877 | to be conservative. */ | |
878 | ||
879 | while (isspace(*s) && *s != sep) s++; | |
880 | ||
881 | /* A change of separator is permitted, so look for a leading '<' followed by an | |
882 | allowed character. */ | |
059ec3d9 PH |
883 | |
884 | if (sep <= 0) | |
885 | { | |
ec95d1a6 | 886 | if (*s == '<' && (ispunct(s[1]) || iscntrl(s[1]))) |
059ec3d9 PH |
887 | { |
888 | sep = s[1]; | |
b72f857f | 889 | if (*++s) ++s; |
ec95d1a6 | 890 | while (isspace(*s) && *s != sep) s++; |
059ec3d9 PH |
891 | } |
892 | else | |
8b455685 | 893 | sep = sep ? -sep : ':'; |
059ec3d9 PH |
894 | *separator = sep; |
895 | } | |
896 | ||
ec95d1a6 PH |
897 | /* An empty string has no list elements */ |
898 | ||
8b455685 | 899 | if (!*s) return NULL; |
059ec3d9 | 900 | |
ec95d1a6 PH |
901 | /* Note whether whether or not the separator is an iscntrl() character. */ |
902 | ||
903 | sep_is_special = iscntrl(sep); | |
904 | ||
059ec3d9 PH |
905 | /* Handle the case when a buffer is provided. */ |
906 | ||
617d3932 | 907 | if (buffer) |
059ec3d9 | 908 | { |
d4ff61d1 | 909 | int p = 0; |
8b455685 | 910 | for (; *s; s++) |
059ec3d9 | 911 | { |
ec95d1a6 | 912 | if (*s == sep && (*(++s) != sep || sep_is_special)) break; |
059ec3d9 PH |
913 | if (p < buflen - 1) buffer[p++] = *s; |
914 | } | |
915 | while (p > 0 && isspace(buffer[p-1])) p--; | |
8b455685 | 916 | buffer[p] = '\0'; |
059ec3d9 PH |
917 | } |
918 | ||
919 | /* Handle the case when a buffer is not provided. */ | |
920 | ||
921 | else | |
922 | { | |
acec9514 | 923 | gstring * g = NULL; |
ec95d1a6 | 924 | |
059ec3d9 | 925 | /* We know that *s != 0 at this point. However, it might be pointing to a |
ec95d1a6 PH |
926 | separator, which could indicate an empty string, or (if an ispunct() |
927 | character) could be doubled to indicate a separator character as data at the | |
928 | start of a string. Avoid getting working memory for an empty item. */ | |
059ec3d9 PH |
929 | |
930 | if (*s == sep) | |
931 | { | |
932 | s++; | |
ec95d1a6 PH |
933 | if (*s != sep || sep_is_special) |
934 | { | |
935 | *listptr = s; | |
936 | return string_copy(US""); | |
937 | } | |
059ec3d9 PH |
938 | } |
939 | ||
ec95d1a6 PH |
940 | /* Not an empty string; the first character is guaranteed to be a data |
941 | character. */ | |
942 | ||
943 | for (;;) | |
059ec3d9 | 944 | { |
d7978c0f JH |
945 | const uschar * ss; |
946 | for (ss = s + 1; *ss && *ss != sep; ) ss++; | |
acec9514 | 947 | g = string_catn(g, s, ss-s); |
ec95d1a6 | 948 | s = ss; |
8b455685 | 949 | if (!*s || *++s != sep || sep_is_special) break; |
059ec3d9 | 950 | } |
acec9514 JH |
951 | while (g->ptr > 0 && isspace(g->s[g->ptr-1])) g->ptr--; |
952 | buffer = string_from_gstring(g); | |
e59797e3 | 953 | gstring_release_unused(g); |
059ec3d9 PH |
954 | } |
955 | ||
956 | /* Update the current pointer and return the new string */ | |
957 | ||
958 | *listptr = s; | |
959 | return buffer; | |
960 | } | |
059ec3d9 PH |
961 | |
962 | ||
4226691b JH |
963 | static const uschar * |
964 | Ustrnchr(const uschar * s, int c, unsigned * len) | |
965 | { | |
966 | unsigned siz = *len; | |
967 | while (siz) | |
968 | { | |
969 | if (!*s) return NULL; | |
970 | if (*s == c) | |
971 | { | |
972 | *len = siz; | |
973 | return s; | |
974 | } | |
975 | s++; | |
976 | siz--; | |
977 | } | |
978 | return NULL; | |
979 | } | |
980 | ||
981 | ||
76146973 | 982 | /************************************************ |
1d9ddac9 | 983 | * Add element to separated list * |
76146973 | 984 | ************************************************/ |
4226691b JH |
985 | /* This function is used to build a list, returning an allocated null-terminated |
986 | growable string. The given element has any embedded separator characters | |
76146973 JH |
987 | doubled. |
988 | ||
4226691b JH |
989 | Despite having the same growable-string interface as string_cat() the list is |
990 | always returned null-terminated. | |
991 | ||
76146973 | 992 | Arguments: |
acec9514 | 993 | list expanding-string for the list that is being built, or NULL |
76146973 | 994 | if this is a new list that has no contents yet |
4c04137d JS |
995 | sep list separator character |
996 | ele new element to be appended to the list | |
76146973 JH |
997 | |
998 | Returns: pointer to the start of the list, changed if copied for expansion. | |
999 | */ | |
1000 | ||
acec9514 JH |
1001 | gstring * |
1002 | string_append_listele(gstring * list, uschar sep, const uschar * ele) | |
76146973 | 1003 | { |
76146973 JH |
1004 | uschar * sp; |
1005 | ||
acec9514 JH |
1006 | if (list && list->ptr) |
1007 | list = string_catn(list, &sep, 1); | |
76146973 | 1008 | |
e3dd1d67 | 1009 | while((sp = Ustrchr(ele, sep))) |
76146973 | 1010 | { |
acec9514 JH |
1011 | list = string_catn(list, ele, sp-ele+1); |
1012 | list = string_catn(list, &sep, 1); | |
76146973 JH |
1013 | ele = sp+1; |
1014 | } | |
acec9514 JH |
1015 | list = string_cat(list, ele); |
1016 | (void) string_from_gstring(list); | |
4226691b | 1017 | return list; |
76146973 | 1018 | } |
00ba27c5 JH |
1019 | |
1020 | ||
acec9514 JH |
1021 | gstring * |
1022 | string_append_listele_n(gstring * list, uschar sep, const uschar * ele, | |
1023 | unsigned len) | |
00ba27c5 | 1024 | { |
00ba27c5 JH |
1025 | const uschar * sp; |
1026 | ||
acec9514 JH |
1027 | if (list && list->ptr) |
1028 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1029 | |
1030 | while((sp = Ustrnchr(ele, sep, &len))) | |
1031 | { | |
acec9514 JH |
1032 | list = string_catn(list, ele, sp-ele+1); |
1033 | list = string_catn(list, &sep, 1); | |
00ba27c5 JH |
1034 | ele = sp+1; |
1035 | len--; | |
1036 | } | |
acec9514 JH |
1037 | list = string_catn(list, ele, len); |
1038 | (void) string_from_gstring(list); | |
4226691b | 1039 | return list; |
00ba27c5 | 1040 | } |
76146973 JH |
1041 | |
1042 | ||
059ec3d9 | 1043 | |
bce15b62 JH |
1044 | /* A slightly-bogus listmaker utility; the separator is a string so |
1045 | can be multiple chars - there is no checking for the element content | |
1046 | containing any of the separator. */ | |
1047 | ||
1048 | gstring * | |
1049 | string_append2_listele_n(gstring * list, const uschar * sepstr, | |
1050 | const uschar * ele, unsigned len) | |
1051 | { | |
bce15b62 JH |
1052 | if (list && list->ptr) |
1053 | list = string_cat(list, sepstr); | |
1054 | ||
1055 | list = string_catn(list, ele, len); | |
1056 | (void) string_from_gstring(list); | |
1057 | return list; | |
1058 | } | |
1059 | ||
1060 | ||
1061 | ||
acec9514 | 1062 | /************************************************/ |
f3ebb786 JH |
1063 | /* Add more space to a growable-string. The caller should check |
1064 | first if growth is required. The gstring struct is modified on | |
1065 | return; specifically, the string-base-pointer may have been changed. | |
d12746bc JH |
1066 | |
1067 | Arguments: | |
1068 | g the growable-string | |
f3ebb786 | 1069 | count amount needed for g->ptr to increase by |
938593e9 JH |
1070 | */ |
1071 | ||
1072 | static void | |
f3ebb786 | 1073 | gstring_grow(gstring * g, int count) |
acec9514 | 1074 | { |
f3ebb786 | 1075 | int p = g->ptr; |
acec9514 | 1076 | int oldsize = g->size; |
f3ebb786 | 1077 | BOOL tainted = is_tainted(g->s); |
acec9514 JH |
1078 | |
1079 | /* Mostly, string_cat() is used to build small strings of a few hundred | |
1080 | characters at most. There are times, however, when the strings are very much | |
1081 | longer (for example, a lookup that returns a vast number of alias addresses). | |
1082 | To try to keep things reasonable, we use increments whose size depends on the | |
1083 | existing length of the string. */ | |
1084 | ||
1085 | unsigned inc = oldsize < 4096 ? 127 : 1023; | |
f3ebb786 JH |
1086 | |
1087 | if (count <= 0) return; | |
1088 | g->size = (p + count + inc + 1) & ~inc; /* one for a NUL */ | |
acec9514 JH |
1089 | |
1090 | /* Try to extend an existing allocation. If the result of calling | |
1091 | store_extend() is false, either there isn't room in the current memory block, | |
1092 | or this string is not the top item on the dynamic store stack. We then have | |
1093 | to get a new chunk of store and copy the old string. When building large | |
1094 | strings, it is helpful to call store_release() on the old string, to release | |
1095 | memory blocks that have become empty. (The block will be freed if the string | |
1096 | is at its start.) However, we can do this only if we know that the old string | |
1097 | was the last item on the dynamic memory stack. This is the case if it matches | |
1098 | store_last_get. */ | |
1099 | ||
f3ebb786 JH |
1100 | if (!store_extend(g->s, tainted, oldsize, g->size)) |
1101 | g->s = store_newblock(g->s, tainted, g->size, p); | |
acec9514 JH |
1102 | } |
1103 | ||
1104 | ||
1105 | ||
d12746bc JH |
1106 | /************************************************* |
1107 | * Add chars to string * | |
1108 | *************************************************/ | |
059ec3d9 PH |
1109 | /* This function is used when building up strings of unknown length. Room is |
1110 | always left for a terminating zero to be added to the string that is being | |
1111 | built. This function does not require the string that is being added to be NUL | |
1112 | terminated, because the number of characters to add is given explicitly. It is | |
1113 | sometimes called to extract parts of other strings. | |
1114 | ||
1115 | Arguments: | |
1116 | string points to the start of the string that is being built, or NULL | |
1117 | if this is a new string that has no contents yet | |
059ec3d9 PH |
1118 | s points to characters to add |
1119 | count count of characters to add; must not exceed the length of s, if s | |
42055a33 | 1120 | is a C string. |
059ec3d9 | 1121 | |
059ec3d9 PH |
1122 | Returns: pointer to the start of the string, changed if copied for expansion. |
1123 | Note that a NUL is not added, though space is left for one. This is | |
1124 | because string_cat() is often called multiple times to build up a | |
1125 | string - there's no point adding the NUL till the end. | |
a1b8a755 | 1126 | |
059ec3d9 | 1127 | */ |
96f5fe4c | 1128 | /* coverity[+alloc] */ |
059ec3d9 | 1129 | |
acec9514 JH |
1130 | gstring * |
1131 | string_catn(gstring * g, const uschar *s, int count) | |
059ec3d9 | 1132 | { |
acec9514 | 1133 | int p; |
f3ebb786 | 1134 | BOOL srctaint = is_tainted(s); |
059ec3d9 | 1135 | |
acec9514 | 1136 | if (!g) |
059ec3d9 | 1137 | { |
acec9514 JH |
1138 | unsigned inc = count < 4096 ? 127 : 1023; |
1139 | unsigned size = ((count + inc) & ~inc) + 1; | |
f3ebb786 | 1140 | g = string_get_tainted(size, srctaint); |
059ec3d9 | 1141 | } |
f3ebb786 JH |
1142 | else if (srctaint && !is_tainted(g->s)) |
1143 | gstring_rebuffer(g); | |
059ec3d9 | 1144 | |
acec9514 JH |
1145 | p = g->ptr; |
1146 | if (p + count >= g->size) | |
f3ebb786 | 1147 | gstring_grow(g, count); |
acec9514 | 1148 | |
059ec3d9 PH |
1149 | /* Because we always specify the exact number of characters to copy, we can |
1150 | use memcpy(), which is likely to be more efficient than strncopy() because the | |
acec9514 | 1151 | latter has to check for zero bytes. */ |
059ec3d9 | 1152 | |
acec9514 JH |
1153 | memcpy(g->s + p, s, count); |
1154 | g->ptr = p + count; | |
1155 | return g; | |
059ec3d9 | 1156 | } |
c3aefacc HSHR |
1157 | |
1158 | ||
acec9514 JH |
1159 | gstring * |
1160 | string_cat(gstring *string, const uschar *s) | |
c2f669a4 | 1161 | { |
acec9514 | 1162 | return string_catn(string, s, Ustrlen(s)); |
c2f669a4 | 1163 | } |
059ec3d9 PH |
1164 | |
1165 | ||
1166 | ||
059ec3d9 PH |
1167 | /************************************************* |
1168 | * Append strings to another string * | |
1169 | *************************************************/ | |
1170 | ||
1171 | /* This function can be used to build a string from many other strings. | |
1172 | It calls string_cat() to do the dirty work. | |
1173 | ||
1174 | Arguments: | |
acec9514 | 1175 | string expanding-string that is being built, or NULL |
059ec3d9 | 1176 | if this is a new string that has no contents yet |
059ec3d9 PH |
1177 | count the number of strings to append |
1178 | ... "count" uschar* arguments, which must be valid zero-terminated | |
1179 | C strings | |
1180 | ||
1181 | Returns: pointer to the start of the string, changed if copied for expansion. | |
1182 | The string is not zero-terminated - see string_cat() above. | |
1183 | */ | |
1184 | ||
acec9514 JH |
1185 | __inline__ gstring * |
1186 | string_append(gstring *string, int count, ...) | |
059ec3d9 PH |
1187 | { |
1188 | va_list ap; | |
059ec3d9 PH |
1189 | |
1190 | va_start(ap, count); | |
acec9514 | 1191 | while (count-- > 0) |
059ec3d9 PH |
1192 | { |
1193 | uschar *t = va_arg(ap, uschar *); | |
acec9514 | 1194 | string = string_cat(string, t); |
059ec3d9 PH |
1195 | } |
1196 | va_end(ap); | |
1197 | ||
1198 | return string; | |
1199 | } | |
1200 | #endif | |
1201 | ||
1202 | ||
1203 | ||
1204 | /************************************************* | |
1205 | * Format a string with length checks * | |
1206 | *************************************************/ | |
1207 | ||
1208 | /* This function is used to format a string with checking of the length of the | |
1209 | output for all conversions. It protects Exim from absent-mindedness when | |
1210 | calling functions like debug_printf and string_sprintf, and elsewhere. There | |
1211 | are two different entry points to what is actually the same function, depending | |
1212 | on whether the variable length list of data arguments are given explicitly or | |
1213 | as a va_list item. | |
1214 | ||
1215 | The formats are the usual printf() ones, with some omissions (never used) and | |
c0b9d3e8 | 1216 | three additions for strings: %S forces lower case, %T forces upper case, and |
acec9514 | 1217 | %#s or %#S prints nothing for a NULL string. Without the # "NULL" is printed |
c0b9d3e8 JH |
1218 | (useful in debugging). There is also the addition of %D and %M, which insert |
1219 | the date in the form used for datestamped log files. | |
059ec3d9 PH |
1220 | |
1221 | Arguments: | |
1222 | buffer a buffer in which to put the formatted string | |
1223 | buflen the length of the buffer | |
1224 | format the format string - deliberately char * and not uschar * | |
1225 | ... or ap variable list of supplementary arguments | |
1226 | ||
1227 | Returns: TRUE if the result fitted in the buffer | |
1228 | */ | |
1229 | ||
1230 | BOOL | |
f3ebb786 JH |
1231 | string_format_trc(uschar * buffer, int buflen, |
1232 | const uschar * func, unsigned line, const char * format, ...) | |
059ec3d9 | 1233 | { |
d12746bc | 1234 | gstring g = { .size = buflen, .ptr = 0, .s = buffer }, *gp; |
059ec3d9 PH |
1235 | va_list ap; |
1236 | va_start(ap, format); | |
f3ebb786 JH |
1237 | gp = string_vformat_trc(&g, func, line, STRING_SPRINTF_BUFFER_SIZE, |
1238 | 0, format, ap); | |
059ec3d9 | 1239 | va_end(ap); |
d12746bc JH |
1240 | g.s[g.ptr] = '\0'; |
1241 | return !!gp; | |
059ec3d9 PH |
1242 | } |
1243 | ||
1244 | ||
d12746bc | 1245 | |
f3ebb786 JH |
1246 | /* Copy the content of a string to tainted memory */ |
1247 | static void | |
1248 | gstring_rebuffer(gstring * g) | |
1249 | { | |
1250 | uschar * s = store_get(g->size, TRUE); | |
1251 | memcpy(s, g->s, g->ptr); | |
1252 | g->s = s; | |
1253 | } | |
1254 | ||
d12746bc JH |
1255 | |
1256 | ||
f3ebb786 | 1257 | /* Build or append to a growing-string, sprintf-style. |
d12746bc | 1258 | |
f3ebb786 JH |
1259 | If the "extend" flag is true, the string passed in can be NULL, |
1260 | empty, or non-empty. Growing is subject to an overall limit given | |
1261 | by the size_limit argument. | |
d12746bc | 1262 | |
f3ebb786 | 1263 | If the "extend" flag is false, the string passed in may not be NULL, |
d12746bc JH |
1264 | will not be grown, and is usable in the original place after return. |
1265 | The return value can be NULL to signify overflow. | |
1266 | ||
adc4ecf9 JH |
1267 | Returns the possibly-new (if copy for growth or taint-handling was needed) |
1268 | string, not nul-terminated. | |
d12746bc JH |
1269 | */ |
1270 | ||
1271 | gstring * | |
f3ebb786 JH |
1272 | string_vformat_trc(gstring * g, const uschar * func, unsigned line, |
1273 | unsigned size_limit, unsigned flags, const char *format, va_list ap) | |
059ec3d9 | 1274 | { |
d12746bc JH |
1275 | enum ltypes { L_NORMAL=1, L_SHORT=2, L_LONG=3, L_LONGLONG=4, L_LONGDOUBLE=5, L_SIZE=6 }; |
1276 | ||
f3ebb786 | 1277 | int width, precision, off, lim, need; |
d12746bc | 1278 | const char * fp = format; /* Deliberately not unsigned */ |
f3ebb786 | 1279 | BOOL dest_tainted = FALSE; |
b1c749bb | 1280 | |
d12746bc JH |
1281 | string_datestamp_offset = -1; /* Datestamp not inserted */ |
1282 | string_datestamp_length = 0; /* Datestamp not inserted */ | |
1283 | string_datestamp_type = 0; /* Datestamp not inserted */ | |
059ec3d9 | 1284 | |
d12746bc | 1285 | #ifdef COMPILE_UTILITY |
f3ebb786 | 1286 | assert(!(flags & SVFMT_EXTEND)); |
d12746bc JH |
1287 | assert(g); |
1288 | #else | |
1289 | ||
1290 | /* Ensure we have a string, to save on checking later */ | |
1291 | if (!g) g = string_get(16); | |
f3ebb786 JH |
1292 | else if (!(flags & SVFMT_TAINT_NOCHK)) dest_tainted = is_tainted(g->s); |
1293 | ||
1294 | if (!(flags & SVFMT_TAINT_NOCHK) && !dest_tainted && is_tainted(format)) | |
1295 | { | |
aaabfafe | 1296 | #ifndef MACRO_PREDEF |
f3ebb786 JH |
1297 | if (!(flags & SVFMT_REBUFFER)) |
1298 | die_tainted(US"string_vformat", func, line); | |
aaabfafe | 1299 | #endif |
f3ebb786 JH |
1300 | gstring_rebuffer(g); |
1301 | dest_tainted = TRUE; | |
1302 | } | |
d12746bc JH |
1303 | #endif /*!COMPILE_UTILITY*/ |
1304 | ||
1305 | lim = g->size - 1; /* leave one for a nul */ | |
1306 | off = g->ptr; /* remember initial offset in gstring */ | |
059ec3d9 PH |
1307 | |
1308 | /* Scan the format and handle the insertions */ | |
1309 | ||
d12746bc | 1310 | while (*fp) |
059ec3d9 | 1311 | { |
b1c749bb | 1312 | int length = L_NORMAL; |
059ec3d9 PH |
1313 | int *nptr; |
1314 | int slen; | |
d12746bc JH |
1315 | const char *null = "NULL"; /* ) These variables */ |
1316 | const char *item_start, *s; /* ) are deliberately */ | |
1317 | char newformat[16]; /* ) not unsigned */ | |
1318 | char * gp = CS g->s + g->ptr; /* ) */ | |
059ec3d9 PH |
1319 | |
1320 | /* Non-% characters just get copied verbatim */ | |
1321 | ||
1322 | if (*fp != '%') | |
1323 | { | |
d12746bc | 1324 | /* Avoid string_copyn() due to COMPILE_UTILITY */ |
f3ebb786 | 1325 | if ((need = g->ptr + 1) > lim) |
1100a343 | 1326 | { |
f3ebb786 JH |
1327 | if (!(flags & SVFMT_EXTEND) || need > size_limit) return NULL; |
1328 | gstring_grow(g, 1); | |
1100a343 JH |
1329 | lim = g->size - 1; |
1330 | } | |
d12746bc | 1331 | g->s[g->ptr++] = (uschar) *fp++; |
059ec3d9 PH |
1332 | continue; |
1333 | } | |
1334 | ||
1335 | /* Deal with % characters. Pick off the width and precision, for checking | |
1336 | strings, skipping over the flag and modifier characters. */ | |
1337 | ||
1338 | item_start = fp; | |
1339 | width = precision = -1; | |
1340 | ||
1341 | if (strchr("-+ #0", *(++fp)) != NULL) | |
1342 | { | |
1343 | if (*fp == '#') null = ""; | |
1344 | fp++; | |
1345 | } | |
1346 | ||
1347 | if (isdigit((uschar)*fp)) | |
1348 | { | |
1349 | width = *fp++ - '0'; | |
1350 | while (isdigit((uschar)*fp)) width = width * 10 + *fp++ - '0'; | |
1351 | } | |
1352 | else if (*fp == '*') | |
1353 | { | |
1354 | width = va_arg(ap, int); | |
1355 | fp++; | |
1356 | } | |
1357 | ||
1358 | if (*fp == '.') | |
059ec3d9 PH |
1359 | if (*(++fp) == '*') |
1360 | { | |
1361 | precision = va_arg(ap, int); | |
1362 | fp++; | |
1363 | } | |
1364 | else | |
d12746bc JH |
1365 | for (precision = 0; isdigit((uschar)*fp); fp++) |
1366 | precision = precision*10 + *fp - '0'; | |
059ec3d9 | 1367 | |
91a246f6 | 1368 | /* Skip over 'h', 'L', 'l', 'll' and 'z', remembering the item length */ |
b1c749bb PH |
1369 | |
1370 | if (*fp == 'h') | |
1371 | { fp++; length = L_SHORT; } | |
1372 | else if (*fp == 'L') | |
1373 | { fp++; length = L_LONGDOUBLE; } | |
1374 | else if (*fp == 'l') | |
b1c749bb | 1375 | if (fp[1] == 'l') |
d12746bc | 1376 | { fp += 2; length = L_LONGLONG; } |
b1c749bb | 1377 | else |
d12746bc | 1378 | { fp++; length = L_LONG; } |
91a246f6 PP |
1379 | else if (*fp == 'z') |
1380 | { fp++; length = L_SIZE; } | |
059ec3d9 PH |
1381 | |
1382 | /* Handle each specific format type. */ | |
1383 | ||
1384 | switch (*fp++) | |
1385 | { | |
1386 | case 'n': | |
d12746bc JH |
1387 | nptr = va_arg(ap, int *); |
1388 | *nptr = g->ptr - off; | |
1389 | break; | |
059ec3d9 PH |
1390 | |
1391 | case 'd': | |
1392 | case 'o': | |
1393 | case 'u': | |
1394 | case 'x': | |
1395 | case 'X': | |
d12746bc | 1396 | width = length > L_LONG ? 24 : 12; |
f3ebb786 | 1397 | if ((need = g->ptr + width) > lim) |
1100a343 | 1398 | { |
f3ebb786 JH |
1399 | if (!(flags & SVFMT_EXTEND) || need >= size_limit) return NULL; |
1400 | gstring_grow(g, width); | |
1100a343 JH |
1401 | lim = g->size - 1; |
1402 | gp = CS g->s + g->ptr; | |
1403 | } | |
d12746bc JH |
1404 | strncpy(newformat, item_start, fp - item_start); |
1405 | newformat[fp - item_start] = 0; | |
b1c749bb | 1406 | |
d12746bc JH |
1407 | /* Short int is promoted to int when passing through ..., so we must use |
1408 | int for va_arg(). */ | |
b1c749bb | 1409 | |
d12746bc JH |
1410 | switch(length) |
1411 | { | |
1412 | case L_SHORT: | |
1413 | case L_NORMAL: | |
1414 | g->ptr += sprintf(gp, newformat, va_arg(ap, int)); break; | |
1415 | case L_LONG: | |
1416 | g->ptr += sprintf(gp, newformat, va_arg(ap, long int)); break; | |
1417 | case L_LONGLONG: | |
1418 | g->ptr += sprintf(gp, newformat, va_arg(ap, LONGLONG_T)); break; | |
1419 | case L_SIZE: | |
1420 | g->ptr += sprintf(gp, newformat, va_arg(ap, size_t)); break; | |
1421 | } | |
1422 | break; | |
059ec3d9 PH |
1423 | |
1424 | case 'p': | |
2e8db779 JH |
1425 | { |
1426 | void * ptr; | |
f3ebb786 | 1427 | if ((need = g->ptr + 24) > lim) |
1100a343 | 1428 | { |
f3ebb786 JH |
1429 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1430 | gstring_grow(g, 24); | |
1100a343 JH |
1431 | lim = g->size - 1; |
1432 | gp = CS g->s + g->ptr; | |
1433 | } | |
81f358da JH |
1434 | /* sprintf() saying "(nil)" for a null pointer seems unreliable. |
1435 | Handle it explicitly. */ | |
2e8db779 JH |
1436 | if ((ptr = va_arg(ap, void *))) |
1437 | { | |
1438 | strncpy(newformat, item_start, fp - item_start); | |
1439 | newformat[fp - item_start] = 0; | |
d12746bc | 1440 | g->ptr += sprintf(gp, newformat, ptr); |
2e8db779 JH |
1441 | } |
1442 | else | |
d12746bc | 1443 | g->ptr += sprintf(gp, "(nil)"); |
2e8db779 | 1444 | } |
059ec3d9 PH |
1445 | break; |
1446 | ||
1447 | /* %f format is inherently insecure if the numbers that it may be | |
870f6ba8 TF |
1448 | handed are unknown (e.g. 1e300). However, in Exim, %f is used for |
1449 | printing load averages, and these are actually stored as integers | |
1450 | (load average * 1000) so the size of the numbers is constrained. | |
1451 | It is also used for formatting sending rates, where the simplicity | |
1452 | of the format prevents overflow. */ | |
059ec3d9 PH |
1453 | |
1454 | case 'f': | |
1455 | case 'e': | |
1456 | case 'E': | |
1457 | case 'g': | |
1458 | case 'G': | |
d12746bc | 1459 | if (precision < 0) precision = 6; |
f3ebb786 | 1460 | if ((need = g->ptr + precision + 8) > lim) |
1100a343 | 1461 | { |
f3ebb786 JH |
1462 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1463 | gstring_grow(g, precision+8); | |
1100a343 JH |
1464 | lim = g->size - 1; |
1465 | gp = CS g->s + g->ptr; | |
1466 | } | |
d12746bc JH |
1467 | strncpy(newformat, item_start, fp - item_start); |
1468 | newformat[fp-item_start] = 0; | |
1469 | if (length == L_LONGDOUBLE) | |
1470 | g->ptr += sprintf(gp, newformat, va_arg(ap, long double)); | |
1471 | else | |
1472 | g->ptr += sprintf(gp, newformat, va_arg(ap, double)); | |
1473 | break; | |
059ec3d9 PH |
1474 | |
1475 | /* String types */ | |
1476 | ||
1477 | case '%': | |
f3ebb786 | 1478 | if ((need = g->ptr + 1) > lim) |
1100a343 | 1479 | { |
f3ebb786 JH |
1480 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1481 | gstring_grow(g, 1); | |
1100a343 JH |
1482 | lim = g->size - 1; |
1483 | } | |
d12746bc JH |
1484 | g->s[g->ptr++] = (uschar) '%'; |
1485 | break; | |
059ec3d9 PH |
1486 | |
1487 | case 'c': | |
f3ebb786 | 1488 | if ((need = g->ptr + 1) > lim) |
1100a343 | 1489 | { |
f3ebb786 JH |
1490 | if (!(flags & SVFMT_EXTEND || need >= size_limit)) return NULL; |
1491 | gstring_grow(g, 1); | |
1100a343 JH |
1492 | lim = g->size - 1; |
1493 | } | |
d12746bc JH |
1494 | g->s[g->ptr++] = (uschar) va_arg(ap, int); |
1495 | break; | |
059ec3d9 | 1496 | |
f1e5fef5 | 1497 | case 'D': /* Insert daily datestamp for log file names */ |
d12746bc JH |
1498 | s = CS tod_stamp(tod_log_datestamp_daily); |
1499 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1500 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1501 | string_datestamp_type = tod_log_datestamp_daily; | |
1502 | slen = string_datestamp_length; | |
1503 | goto INSERT_STRING; | |
f1e5fef5 PP |
1504 | |
1505 | case 'M': /* Insert monthly datestamp for log file names */ | |
d12746bc JH |
1506 | s = CS tod_stamp(tod_log_datestamp_monthly); |
1507 | string_datestamp_offset = g->ptr; /* Passed back via global */ | |
1508 | string_datestamp_length = Ustrlen(s); /* Passed back via global */ | |
1509 | string_datestamp_type = tod_log_datestamp_monthly; | |
1510 | slen = string_datestamp_length; | |
1511 | goto INSERT_STRING; | |
059ec3d9 PH |
1512 | |
1513 | case 's': | |
1514 | case 'S': /* Forces *lower* case */ | |
c0b9d3e8 | 1515 | case 'T': /* Forces *upper* case */ |
d12746bc | 1516 | s = va_arg(ap, char *); |
059ec3d9 | 1517 | |
d12746bc JH |
1518 | if (!s) s = null; |
1519 | slen = Ustrlen(s); | |
059ec3d9 | 1520 | |
f3ebb786 JH |
1521 | if (!(flags & SVFMT_TAINT_NOCHK) && !dest_tainted && is_tainted(s)) |
1522 | if (flags & SVFMT_REBUFFER) | |
1523 | { | |
1524 | gstring_rebuffer(g); | |
1525 | gp = CS g->s + g->ptr; | |
1526 | dest_tainted = TRUE; | |
1527 | } | |
aaabfafe | 1528 | #ifndef MACRO_PREDEF |
f3ebb786 JH |
1529 | else |
1530 | die_tainted(US"string_vformat", func, line); | |
aaabfafe | 1531 | #endif |
f3ebb786 | 1532 | |
f1e5fef5 PP |
1533 | INSERT_STRING: /* Come to from %D or %M above */ |
1534 | ||
059ec3d9 | 1535 | { |
d12746bc | 1536 | BOOL truncated = FALSE; |
059ec3d9 | 1537 | |
d12746bc JH |
1538 | /* If the width is specified, check that there is a precision |
1539 | set; if not, set it to the width to prevent overruns of long | |
1540 | strings. */ | |
059ec3d9 | 1541 | |
d12746bc JH |
1542 | if (width >= 0) |
1543 | { | |
1544 | if (precision < 0) precision = width; | |
1545 | } | |
059ec3d9 | 1546 | |
d12746bc JH |
1547 | /* If a width is not specified and the precision is specified, set |
1548 | the width to the precision, or the string length if shorted. */ | |
059ec3d9 | 1549 | |
d12746bc JH |
1550 | else if (precision >= 0) |
1551 | width = precision < slen ? precision : slen; | |
059ec3d9 | 1552 | |
d12746bc | 1553 | /* If neither are specified, set them both to the string length. */ |
059ec3d9 | 1554 | |
d12746bc JH |
1555 | else |
1556 | width = precision = slen; | |
1557 | ||
f3ebb786 | 1558 | if ((need = g->ptr + width) >= size_limit || !(flags & SVFMT_EXTEND)) |
d12746bc JH |
1559 | { |
1560 | if (g->ptr == lim) return NULL; | |
f3ebb786 | 1561 | if (need > lim) |
d12746bc JH |
1562 | { |
1563 | truncated = TRUE; | |
1564 | width = precision = lim - g->ptr - 1; | |
1565 | if (width < 0) width = 0; | |
1566 | if (precision < 0) precision = 0; | |
1567 | } | |
1568 | } | |
f3ebb786 | 1569 | else if (need > lim) |
1100a343 | 1570 | { |
f3ebb786 | 1571 | gstring_grow(g, width); |
1100a343 JH |
1572 | lim = g->size - 1; |
1573 | gp = CS g->s + g->ptr; | |
1574 | } | |
d12746bc JH |
1575 | |
1576 | g->ptr += sprintf(gp, "%*.*s", width, precision, s); | |
1577 | if (fp[-1] == 'S') | |
1578 | while (*gp) { *gp = tolower(*gp); gp++; } | |
1579 | else if (fp[-1] == 'T') | |
1580 | while (*gp) { *gp = toupper(*gp); gp++; } | |
1581 | ||
1582 | if (truncated) return NULL; | |
1583 | break; | |
059ec3d9 | 1584 | } |
059ec3d9 PH |
1585 | |
1586 | /* Some things are never used in Exim; also catches junk. */ | |
1587 | ||
1588 | default: | |
d12746bc JH |
1589 | strncpy(newformat, item_start, fp - item_start); |
1590 | newformat[fp-item_start] = 0; | |
1591 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "string_format: unsupported type " | |
1592 | "in \"%s\" in \"%s\"", newformat, format); | |
1593 | break; | |
059ec3d9 PH |
1594 | } |
1595 | } | |
1596 | ||
f3ebb786 JH |
1597 | if (g->ptr > g->size) |
1598 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
1599 | "string_format internal error: caller %s %d", func, line); | |
d12746bc JH |
1600 | return g; |
1601 | } | |
059ec3d9 | 1602 | |
059ec3d9 | 1603 | |
d12746bc JH |
1604 | |
1605 | #ifndef COMPILE_UTILITY | |
059ec3d9 PH |
1606 | /************************************************* |
1607 | * Generate an "open failed" message * | |
1608 | *************************************************/ | |
1609 | ||
1610 | /* This function creates a message after failure to open a file. It includes a | |
1611 | string supplied as data, adds the strerror() text, and if the failure was | |
1612 | "Permission denied", reads and includes the euid and egid. | |
1613 | ||
1614 | Arguments: | |
1615 | eno the value of errno after the failure | |
1616 | format a text format string - deliberately not uschar * | |
1617 | ... arguments for the format string | |
1618 | ||
1619 | Returns: a message, in dynamic store | |
1620 | */ | |
1621 | ||
1622 | uschar * | |
f3ebb786 JH |
1623 | string_open_failed_trc(int eno, const uschar * func, unsigned line, |
1624 | const char *format, ...) | |
059ec3d9 PH |
1625 | { |
1626 | va_list ap; | |
d12746bc | 1627 | gstring * g = string_get(1024); |
059ec3d9 | 1628 | |
d12746bc | 1629 | g = string_catn(g, US"failed to open ", 15); |
059ec3d9 PH |
1630 | |
1631 | /* Use the checked formatting routine to ensure that the buffer | |
1632 | does not overflow. It should not, since this is called only for internally | |
1633 | specified messages. If it does, the message just gets truncated, and there | |
1634 | doesn't seem much we can do about that. */ | |
1635 | ||
d12746bc | 1636 | va_start(ap, format); |
f3ebb786 JH |
1637 | (void) string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE, |
1638 | 0, format, ap); | |
d12746bc | 1639 | string_from_gstring(g); |
e59797e3 | 1640 | gstring_release_unused(g); |
cb570b5e | 1641 | va_end(ap); |
059ec3d9 | 1642 | |
d12746bc JH |
1643 | return eno == EACCES |
1644 | ? string_sprintf("%s: %s (euid=%ld egid=%ld)", g->s, strerror(eno), | |
1645 | (long int)geteuid(), (long int)getegid()) | |
1646 | : string_sprintf("%s: %s", g->s, strerror(eno)); | |
059ec3d9 PH |
1647 | } |
1648 | #endif /* COMPILE_UTILITY */ | |
1649 | ||
1650 | ||
1651 | ||
059ec3d9 PH |
1652 | |
1653 | ||
bc3c7bb7 HSHR |
1654 | #ifndef COMPILE_UTILITY |
1655 | /* qsort(3), currently used to sort the environment variables | |
1656 | for -bP environment output, needs a function to compare two pointers to string | |
1657 | pointers. Here it is. */ | |
1658 | ||
1659 | int | |
84bbb4d8 | 1660 | string_compare_by_pointer(const void *a, const void *b) |
bc3c7bb7 | 1661 | { |
35a5627d | 1662 | return Ustrcmp(* CUSS a, * CUSS b); |
bc3c7bb7 HSHR |
1663 | } |
1664 | #endif /* COMPILE_UTILITY */ | |
059ec3d9 PH |
1665 | |
1666 | ||
1667 | ||
d12746bc | 1668 | |
059ec3d9 PH |
1669 | /************************************************* |
1670 | ************************************************** | |
1671 | * Stand-alone test program * | |
1672 | ************************************************** | |
1673 | *************************************************/ | |
1674 | ||
1675 | #ifdef STAND_ALONE | |
1676 | int main(void) | |
1677 | { | |
1678 | uschar buffer[256]; | |
1679 | ||
1680 | printf("Testing is_ip_address\n"); | |
1681 | ||
1682 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1683 | { | |
1684 | int offset; | |
1685 | buffer[Ustrlen(buffer) - 1] = 0; | |
1686 | printf("%d\n", string_is_ip_address(buffer, NULL)); | |
1687 | printf("%d %d %s\n", string_is_ip_address(buffer, &offset), offset, buffer); | |
1688 | } | |
1689 | ||
1690 | printf("Testing string_nextinlist\n"); | |
1691 | ||
1692 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1693 | { | |
1694 | uschar *list = buffer; | |
1695 | uschar *lp1, *lp2; | |
1696 | uschar item[256]; | |
1697 | int sep1 = 0; | |
1698 | int sep2 = 0; | |
1699 | ||
1700 | if (*list == '<') | |
1701 | { | |
1702 | sep1 = sep2 = list[1]; | |
1703 | list += 2; | |
1704 | } | |
1705 | ||
1706 | lp1 = lp2 = list; | |
1707 | for (;;) | |
1708 | { | |
1709 | uschar *item1 = string_nextinlist(&lp1, &sep1, item, sizeof(item)); | |
1710 | uschar *item2 = string_nextinlist(&lp2, &sep2, NULL, 0); | |
1711 | ||
1712 | if (item1 == NULL && item2 == NULL) break; | |
1713 | if (item == NULL || item2 == NULL || Ustrcmp(item1, item2) != 0) | |
1714 | { | |
1715 | printf("***ERROR\nitem1=\"%s\"\nitem2=\"%s\"\n", | |
1716 | (item1 == NULL)? "NULL" : CS item1, | |
1717 | (item2 == NULL)? "NULL" : CS item2); | |
1718 | break; | |
1719 | } | |
1720 | else printf(" \"%s\"\n", CS item1); | |
1721 | } | |
1722 | } | |
1723 | ||
1724 | /* This is a horrible lash-up, but it serves its purpose. */ | |
1725 | ||
1726 | printf("Testing string_format\n"); | |
1727 | ||
1728 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) | |
1729 | { | |
1730 | void *args[3]; | |
ed72ace5 | 1731 | long long llargs[3]; |
059ec3d9 PH |
1732 | double dargs[3]; |
1733 | int dflag = 0; | |
ed72ace5 | 1734 | int llflag = 0; |
059ec3d9 PH |
1735 | int n = 0; |
1736 | int count; | |
1737 | int countset = 0; | |
1738 | uschar format[256]; | |
1739 | uschar outbuf[256]; | |
1740 | uschar *s; | |
1741 | buffer[Ustrlen(buffer) - 1] = 0; | |
1742 | ||
1743 | s = Ustrchr(buffer, ','); | |
1744 | if (s == NULL) s = buffer + Ustrlen(buffer); | |
1745 | ||
1746 | Ustrncpy(format, buffer, s - buffer); | |
1747 | format[s-buffer] = 0; | |
1748 | ||
1749 | if (*s == ',') s++; | |
1750 | ||
1751 | while (*s != 0) | |
1752 | { | |
1753 | uschar *ss = s; | |
1754 | s = Ustrchr(ss, ','); | |
1755 | if (s == NULL) s = ss + Ustrlen(ss); | |
1756 | ||
1757 | if (isdigit(*ss)) | |
1758 | { | |
1759 | Ustrncpy(outbuf, ss, s-ss); | |
1760 | if (Ustrchr(outbuf, '.') != NULL) | |
1761 | { | |
1762 | dflag = 1; | |
1763 | dargs[n++] = Ustrtod(outbuf, NULL); | |
1764 | } | |
ed72ace5 PH |
1765 | else if (Ustrstr(outbuf, "ll") != NULL) |
1766 | { | |
1767 | llflag = 1; | |
1768 | llargs[n++] = strtoull(CS outbuf, NULL, 10); | |
1769 | } | |
059ec3d9 PH |
1770 | else |
1771 | { | |
1772 | args[n++] = (void *)Uatoi(outbuf); | |
1773 | } | |
1774 | } | |
1775 | ||
1776 | else if (Ustrcmp(ss, "*") == 0) | |
1777 | { | |
1778 | args[n++] = (void *)(&count); | |
1779 | countset = 1; | |
1780 | } | |
1781 | ||
1782 | else | |
1783 | { | |
1784 | uschar *sss = malloc(s - ss + 1); | |
1785 | Ustrncpy(sss, ss, s-ss); | |
1786 | args[n++] = sss; | |
1787 | } | |
1788 | ||
1789 | if (*s == ',') s++; | |
1790 | } | |
1791 | ||
ed72ace5 PH |
1792 | if (!dflag && !llflag) |
1793 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1794 | args[0], args[1], args[2])? "True" : "False"); | |
1795 | ||
1796 | else if (dflag) | |
1797 | printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
1798 | dargs[0], dargs[1], dargs[2])? "True" : "False"); | |
059ec3d9 PH |
1799 | |
1800 | else printf("%s\n", string_format(outbuf, sizeof(outbuf), CS format, | |
ed72ace5 | 1801 | llargs[0], llargs[1], llargs[2])? "True" : "False"); |
059ec3d9 PH |
1802 | |
1803 | printf("%s\n", CS outbuf); | |
1804 | if (countset) printf("count=%d\n", count); | |
1805 | } | |
1806 | ||
1807 | return 0; | |
1808 | } | |
1809 | #endif | |
1810 | ||
1811 | /* End of string.c */ |