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Commit | Line | Data |
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62867571 | 1 | /* |
b524b808 | 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
2044d382 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
d86b6915 RL |
10 | /* Part of the code in here was originally in conf.c, which is now removed */ |
11 | ||
d02b48c6 | 12 | #include <stdio.h> |
9887c71c | 13 | #include <string.h> |
b39fc560 | 14 | #include "internal/cryptlib.h" |
b524b808 | 15 | #include "internal/o_dir.h" |
ec577822 BM |
16 | #include <openssl/lhash.h> |
17 | #include <openssl/conf.h> | |
d86b6915 RL |
18 | #include <openssl/conf_api.h> |
19 | #include "conf_def.h" | |
ec577822 BM |
20 | #include <openssl/buffer.h> |
21 | #include <openssl/err.h> | |
b524b808 TM |
22 | #ifndef OPENSSL_NO_POSIX_IO |
23 | # include <sys/stat.h> | |
24 | # ifdef _WIN32 | |
25 | # define stat _stat | |
26 | # define strcasecmp _stricmp | |
27 | # endif | |
28 | #endif | |
d02b48c6 | 29 | |
f20aa69e AP |
30 | #ifndef S_ISDIR |
31 | # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR) | |
32 | #endif | |
33 | ||
8a585601 MC |
34 | /* |
35 | * The maximum length we can grow a value to after variable expansion. 64k | |
36 | * should be more than enough for all reasonable uses. | |
37 | */ | |
38 | #define MAX_CONF_VALUE_LENGTH 65536 | |
39 | ||
a9b7a06e | 40 | static int is_keytype(const CONF *conf, char c, unsigned short type); |
d86b6915 | 41 | static char *eat_ws(CONF *conf, char *p); |
b524b808 | 42 | static void trim_ws(CONF *conf, char *start); |
d86b6915 RL |
43 | static char *eat_alpha_numeric(CONF *conf, char *p); |
44 | static void clear_comments(CONF *conf, char *p); | |
0f113f3e | 45 | static int str_copy(CONF *conf, char *section, char **to, char *from); |
d86b6915 RL |
46 | static char *scan_quote(CONF *conf, char *p); |
47 | static char *scan_dquote(CONF *conf, char *p); | |
0f113f3e | 48 | #define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2))) |
b524b808 TM |
49 | #ifndef OPENSSL_NO_POSIX_IO |
50 | static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, | |
51 | char **dirpath); | |
52 | static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx); | |
53 | #endif | |
d86b6915 RL |
54 | |
55 | static CONF *def_create(CONF_METHOD *meth); | |
56 | static int def_init_default(CONF *conf); | |
936c2b9e | 57 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
d86b6915 | 58 | static int def_init_WIN32(CONF *conf); |
7cfc0a55 | 59 | #endif |
d86b6915 RL |
60 | static int def_destroy(CONF *conf); |
61 | static int def_destroy_data(CONF *conf); | |
befb3e7a RL |
62 | static int def_load(CONF *conf, const char *name, long *eline); |
63 | static int def_load_bio(CONF *conf, BIO *bp, long *eline); | |
9dd5ae65 BL |
64 | static int def_dump(const CONF *conf, BIO *bp); |
65 | static int def_is_number(const CONF *conf, char c); | |
66 | static int def_to_int(const CONF *conf, char c); | |
d86b6915 | 67 | |
d86b6915 | 68 | static CONF_METHOD default_method = { |
0f113f3e MC |
69 | "OpenSSL default", |
70 | def_create, | |
71 | def_init_default, | |
72 | def_destroy, | |
73 | def_destroy_data, | |
74 | def_load_bio, | |
75 | def_dump, | |
76 | def_is_number, | |
77 | def_to_int, | |
78 | def_load | |
79 | }; | |
d86b6915 | 80 | |
7cfc0a55 RS |
81 | CONF_METHOD *NCONF_default(void) |
82 | { | |
83 | return &default_method; | |
84 | } | |
85 | ||
936c2b9e | 86 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
d86b6915 | 87 | static CONF_METHOD WIN32_method = { |
0f113f3e MC |
88 | "WIN32", |
89 | def_create, | |
90 | def_init_WIN32, | |
91 | def_destroy, | |
92 | def_destroy_data, | |
93 | def_load_bio, | |
94 | def_dump, | |
95 | def_is_number, | |
96 | def_to_int, | |
97 | def_load | |
98 | }; | |
d86b6915 | 99 | |
3cb7c5cf | 100 | CONF_METHOD *NCONF_WIN32(void) |
0f113f3e MC |
101 | { |
102 | return &WIN32_method; | |
103 | } | |
7cfc0a55 | 104 | #endif |
d02b48c6 | 105 | |
d86b6915 | 106 | static CONF *def_create(CONF_METHOD *meth) |
0f113f3e MC |
107 | { |
108 | CONF *ret; | |
109 | ||
b4faea50 | 110 | ret = OPENSSL_malloc(sizeof(*ret)); |
90945fa3 | 111 | if (ret != NULL) |
0f113f3e MC |
112 | if (meth->init(ret) == 0) { |
113 | OPENSSL_free(ret); | |
114 | ret = NULL; | |
115 | } | |
116 | return ret; | |
117 | } | |
118 | ||
d86b6915 | 119 | static int def_init_default(CONF *conf) |
0f113f3e MC |
120 | { |
121 | if (conf == NULL) | |
122 | return 0; | |
d86b6915 | 123 | |
0f113f3e MC |
124 | conf->meth = &default_method; |
125 | conf->meth_data = (void *)CONF_type_default; | |
126 | conf->data = NULL; | |
d02b48c6 | 127 | |
0f113f3e MC |
128 | return 1; |
129 | } | |
8623f693 | 130 | |
936c2b9e | 131 | #ifndef OPENSSL_NO_DEPRECATED_3_0 |
d86b6915 | 132 | static int def_init_WIN32(CONF *conf) |
0f113f3e MC |
133 | { |
134 | if (conf == NULL) | |
135 | return 0; | |
8623f693 | 136 | |
0f113f3e MC |
137 | conf->meth = &WIN32_method; |
138 | conf->meth_data = (void *)CONF_type_win32; | |
139 | conf->data = NULL; | |
d86b6915 | 140 | |
0f113f3e MC |
141 | return 1; |
142 | } | |
7cfc0a55 | 143 | #endif |
d86b6915 RL |
144 | |
145 | static int def_destroy(CONF *conf) | |
0f113f3e MC |
146 | { |
147 | if (def_destroy_data(conf)) { | |
148 | OPENSSL_free(conf); | |
149 | return 1; | |
150 | } | |
151 | return 0; | |
152 | } | |
8623f693 | 153 | |
d86b6915 | 154 | static int def_destroy_data(CONF *conf) |
0f113f3e MC |
155 | { |
156 | if (conf == NULL) | |
157 | return 0; | |
158 | _CONF_free_data(conf); | |
159 | return 1; | |
160 | } | |
8623f693 | 161 | |
befb3e7a | 162 | static int def_load(CONF *conf, const char *name, long *line) |
0f113f3e MC |
163 | { |
164 | int ret; | |
165 | BIO *in = NULL; | |
befb3e7a | 166 | |
bc36ee62 | 167 | #ifdef OPENSSL_SYS_VMS |
0f113f3e | 168 | in = BIO_new_file(name, "r"); |
befb3e7a | 169 | #else |
0f113f3e | 170 | in = BIO_new_file(name, "rb"); |
befb3e7a | 171 | #endif |
0f113f3e MC |
172 | if (in == NULL) { |
173 | if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE) | |
174 | CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE); | |
175 | else | |
176 | CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB); | |
177 | return 0; | |
178 | } | |
befb3e7a | 179 | |
0f113f3e MC |
180 | ret = def_load_bio(conf, in, line); |
181 | BIO_free(in); | |
befb3e7a | 182 | |
0f113f3e MC |
183 | return ret; |
184 | } | |
befb3e7a RL |
185 | |
186 | static int def_load_bio(CONF *conf, BIO *in, long *line) | |
0f113f3e | 187 | { |
6a89a25c | 188 | /* The macro BUFSIZE conflicts with a system macro in VxWorks */ |
0f113f3e MC |
189 | #define CONFBUFSIZE 512 |
190 | int bufnum = 0, i, ii; | |
191 | BUF_MEM *buff = NULL; | |
192 | char *s, *p, *end; | |
193 | int again; | |
194 | long eline = 0; | |
195 | char btmp[DECIMAL_SIZE(eline) + 1]; | |
196 | CONF_VALUE *v = NULL, *tv; | |
197 | CONF_VALUE *sv = NULL; | |
198 | char *section = NULL, *buf; | |
199 | char *start, *psection, *pname; | |
200 | void *h = (void *)(conf->data); | |
b524b808 TM |
201 | STACK_OF(BIO) *biosk = NULL; |
202 | #ifndef OPENSSL_NO_POSIX_IO | |
203 | char *dirpath = NULL; | |
204 | OPENSSL_DIR_CTX *dirctx = NULL; | |
205 | #endif | |
0f113f3e MC |
206 | |
207 | if ((buff = BUF_MEM_new()) == NULL) { | |
208 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB); | |
209 | goto err; | |
210 | } | |
211 | ||
7644a9ae | 212 | section = OPENSSL_strdup("default"); |
0f113f3e MC |
213 | if (section == NULL) { |
214 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); | |
215 | goto err; | |
216 | } | |
0f113f3e MC |
217 | |
218 | if (_CONF_new_data(conf) == 0) { | |
219 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); | |
220 | goto err; | |
221 | } | |
222 | ||
223 | sv = _CONF_new_section(conf, section); | |
224 | if (sv == NULL) { | |
225 | CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION); | |
226 | goto err; | |
227 | } | |
228 | ||
229 | bufnum = 0; | |
230 | again = 0; | |
231 | for (;;) { | |
232 | if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) { | |
233 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB); | |
234 | goto err; | |
235 | } | |
236 | p = &(buff->data[bufnum]); | |
237 | *p = '\0'; | |
b524b808 | 238 | read_retry: |
0f113f3e MC |
239 | BIO_gets(in, p, CONFBUFSIZE - 1); |
240 | p[CONFBUFSIZE - 1] = '\0'; | |
241 | ii = i = strlen(p); | |
b524b808 TM |
242 | if (i == 0 && !again) { |
243 | /* the currently processed BIO is at EOF */ | |
244 | BIO *parent; | |
245 | ||
246 | #ifndef OPENSSL_NO_POSIX_IO | |
247 | /* continue processing with the next file from directory */ | |
248 | if (dirctx != NULL) { | |
249 | BIO *next; | |
250 | ||
251 | if ((next = get_next_file(dirpath, &dirctx)) != NULL) { | |
252 | BIO_vfree(in); | |
253 | in = next; | |
254 | goto read_retry; | |
255 | } else { | |
256 | OPENSSL_free(dirpath); | |
257 | dirpath = NULL; | |
258 | } | |
259 | } | |
260 | #endif | |
261 | /* no more files in directory, continue with processing parent */ | |
262 | if ((parent = sk_BIO_pop(biosk)) == NULL) { | |
263 | /* everything processed get out of the loop */ | |
264 | break; | |
265 | } else { | |
266 | BIO_vfree(in); | |
267 | in = parent; | |
268 | goto read_retry; | |
269 | } | |
270 | } | |
0f113f3e MC |
271 | again = 0; |
272 | while (i > 0) { | |
273 | if ((p[i - 1] != '\r') && (p[i - 1] != '\n')) | |
274 | break; | |
275 | else | |
276 | i--; | |
277 | } | |
278 | /* | |
279 | * we removed some trailing stuff so there is a new line on the end. | |
280 | */ | |
281 | if (ii && i == ii) | |
282 | again = 1; /* long line */ | |
283 | else { | |
284 | p[i] = '\0'; | |
285 | eline++; /* another input line */ | |
286 | } | |
287 | ||
288 | /* we now have a line with trailing \r\n removed */ | |
289 | ||
290 | /* i is the number of bytes */ | |
291 | bufnum += i; | |
292 | ||
293 | v = NULL; | |
294 | /* check for line continuation */ | |
295 | if (bufnum >= 1) { | |
296 | /* | |
297 | * If we have bytes and the last char '\\' and second last char | |
298 | * is not '\\' | |
299 | */ | |
300 | p = &(buff->data[bufnum - 1]); | |
301 | if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) { | |
302 | bufnum--; | |
303 | again = 1; | |
304 | } | |
305 | } | |
306 | if (again) | |
307 | continue; | |
308 | bufnum = 0; | |
309 | buf = buff->data; | |
310 | ||
311 | clear_comments(conf, buf); | |
312 | s = eat_ws(conf, buf); | |
313 | if (IS_EOF(conf, *s)) | |
314 | continue; /* blank line */ | |
315 | if (*s == '[') { | |
316 | char *ss; | |
317 | ||
318 | s++; | |
319 | start = eat_ws(conf, s); | |
320 | ss = start; | |
321 | again: | |
322 | end = eat_alpha_numeric(conf, ss); | |
323 | p = eat_ws(conf, end); | |
324 | if (*p != ']') { | |
325 | if (*p != '\0' && ss != p) { | |
326 | ss = p; | |
327 | goto again; | |
328 | } | |
329 | CONFerr(CONF_F_DEF_LOAD_BIO, | |
330 | CONF_R_MISSING_CLOSE_SQUARE_BRACKET); | |
331 | goto err; | |
332 | } | |
333 | *end = '\0'; | |
334 | if (!str_copy(conf, NULL, §ion, start)) | |
335 | goto err; | |
336 | if ((sv = _CONF_get_section(conf, section)) == NULL) | |
337 | sv = _CONF_new_section(conf, section); | |
338 | if (sv == NULL) { | |
339 | CONFerr(CONF_F_DEF_LOAD_BIO, | |
340 | CONF_R_UNABLE_TO_CREATE_NEW_SECTION); | |
341 | goto err; | |
342 | } | |
343 | continue; | |
344 | } else { | |
345 | pname = s; | |
0f113f3e MC |
346 | end = eat_alpha_numeric(conf, s); |
347 | if ((end[0] == ':') && (end[1] == ':')) { | |
348 | *end = '\0'; | |
349 | end += 2; | |
350 | psection = pname; | |
351 | pname = end; | |
352 | end = eat_alpha_numeric(conf, end); | |
b524b808 TM |
353 | } else { |
354 | psection = section; | |
0f113f3e MC |
355 | } |
356 | p = eat_ws(conf, end); | |
9d556033 TM |
357 | if (strncmp(pname, ".include", 8) == 0 |
358 | && (p != pname + 8 || *p == '=')) { | |
b524b808 TM |
359 | char *include = NULL; |
360 | BIO *next; | |
7bb82f92 SL |
361 | const char *include_dir = ossl_safe_getenv("OPENSSL_CONF_INCLUDE"); |
362 | char *include_path = NULL; | |
b524b808 | 363 | |
9d556033 TM |
364 | if (*p == '=') { |
365 | p++; | |
366 | p = eat_ws(conf, p); | |
367 | } | |
b524b808 TM |
368 | trim_ws(conf, p); |
369 | if (!str_copy(conf, psection, &include, p)) | |
370 | goto err; | |
7bb82f92 SL |
371 | |
372 | if (include_dir != NULL) { | |
373 | size_t newlen = strlen(include_dir) + strlen(include) + 2; | |
374 | ||
375 | include_path = OPENSSL_malloc(newlen); | |
376 | OPENSSL_strlcpy(include_path, include_dir, newlen); | |
377 | OPENSSL_strlcat(include_path, "/", newlen); | |
378 | OPENSSL_strlcat(include_path, include, newlen); | |
379 | } else { | |
380 | include_path = include; | |
381 | } | |
382 | ||
b524b808 TM |
383 | /* get the BIO of the included file */ |
384 | #ifndef OPENSSL_NO_POSIX_IO | |
7bb82f92 SL |
385 | next = process_include(include_path, &dirctx, &dirpath); |
386 | if (include_path != dirpath) { | |
b524b808 TM |
387 | /* dirpath will contain include in case of a directory */ |
388 | OPENSSL_free(include); | |
7bb82f92 SL |
389 | if (include_path != include) |
390 | OPENSSL_free(include_path); | |
b524b808 TM |
391 | } |
392 | #else | |
7bb82f92 | 393 | next = BIO_new_file(include_path, "r"); |
b524b808 | 394 | OPENSSL_free(include); |
7bb82f92 SL |
395 | if (include_path != include) |
396 | OPENSSL_free(include_path); | |
b524b808 | 397 | #endif |
7bb82f92 | 398 | |
b524b808 TM |
399 | if (next != NULL) { |
400 | /* push the currently processing BIO onto stack */ | |
401 | if (biosk == NULL) { | |
402 | if ((biosk = sk_BIO_new_null()) == NULL) { | |
403 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); | |
404 | goto err; | |
405 | } | |
406 | } | |
407 | if (!sk_BIO_push(biosk, in)) { | |
408 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); | |
409 | goto err; | |
410 | } | |
411 | /* continue with reading from the included BIO */ | |
412 | in = next; | |
413 | } | |
414 | continue; | |
415 | } else if (*p != '=') { | |
0f113f3e MC |
416 | CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN); |
417 | goto err; | |
418 | } | |
419 | *end = '\0'; | |
420 | p++; | |
421 | start = eat_ws(conf, p); | |
b524b808 | 422 | trim_ws(conf, start); |
0f113f3e | 423 | |
75ebbd9a | 424 | if ((v = OPENSSL_malloc(sizeof(*v))) == NULL) { |
0f113f3e MC |
425 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); |
426 | goto err; | |
427 | } | |
a2371fa9 | 428 | v->name = OPENSSL_strdup(pname); |
0f113f3e MC |
429 | v->value = NULL; |
430 | if (v->name == NULL) { | |
431 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); | |
432 | goto err; | |
433 | } | |
0f113f3e MC |
434 | if (!str_copy(conf, psection, &(v->value), start)) |
435 | goto err; | |
436 | ||
437 | if (strcmp(psection, section) != 0) { | |
438 | if ((tv = _CONF_get_section(conf, psection)) | |
439 | == NULL) | |
440 | tv = _CONF_new_section(conf, psection); | |
441 | if (tv == NULL) { | |
442 | CONFerr(CONF_F_DEF_LOAD_BIO, | |
443 | CONF_R_UNABLE_TO_CREATE_NEW_SECTION); | |
444 | goto err; | |
445 | } | |
446 | } else | |
447 | tv = sv; | |
0f113f3e MC |
448 | if (_CONF_add_string(conf, tv, v) == 0) { |
449 | CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE); | |
450 | goto err; | |
451 | } | |
0f113f3e MC |
452 | v = NULL; |
453 | } | |
454 | } | |
25aaa98a | 455 | BUF_MEM_free(buff); |
b548a1f1 | 456 | OPENSSL_free(section); |
85aebfcc RL |
457 | /* |
458 | * No need to pop, since we only get here if the stack is empty. | |
459 | * If this causes a BIO leak, THE ISSUE IS SOMEWHERE ELSE! | |
460 | */ | |
461 | sk_BIO_free(biosk); | |
a2371fa9 | 462 | return 1; |
0f113f3e | 463 | err: |
25aaa98a | 464 | BUF_MEM_free(buff); |
b548a1f1 | 465 | OPENSSL_free(section); |
85aebfcc RL |
466 | /* |
467 | * Since |in| is the first element of the stack and should NOT be freed | |
468 | * here, we cannot use sk_BIO_pop_free(). Instead, we pop and free one | |
469 | * BIO at a time, making sure that the last one popped isn't. | |
470 | */ | |
471 | while (sk_BIO_num(biosk) > 0) { | |
472 | BIO *popped = sk_BIO_pop(biosk); | |
473 | BIO_vfree(in); | |
474 | in = popped; | |
475 | } | |
476 | sk_BIO_free(biosk); | |
b524b808 TM |
477 | #ifndef OPENSSL_NO_POSIX_IO |
478 | OPENSSL_free(dirpath); | |
479 | if (dirctx != NULL) | |
480 | OPENSSL_DIR_end(&dirctx); | |
481 | #endif | |
0f113f3e MC |
482 | if (line != NULL) |
483 | *line = eline; | |
a2371fa9 | 484 | BIO_snprintf(btmp, sizeof(btmp), "%ld", eline); |
0f113f3e | 485 | ERR_add_error_data(2, "line ", btmp); |
25aaa98a | 486 | if (h != conf->data) { |
0f113f3e MC |
487 | CONF_free(conf->data); |
488 | conf->data = NULL; | |
489 | } | |
490 | if (v != NULL) { | |
b548a1f1 RS |
491 | OPENSSL_free(v->name); |
492 | OPENSSL_free(v->value); | |
493 | OPENSSL_free(v); | |
0f113f3e | 494 | } |
a2371fa9 | 495 | return 0; |
0f113f3e | 496 | } |
8623f693 | 497 | |
d86b6915 | 498 | static void clear_comments(CONF *conf, char *p) |
0f113f3e MC |
499 | { |
500 | for (;;) { | |
501 | if (IS_FCOMMENT(conf, *p)) { | |
502 | *p = '\0'; | |
503 | return; | |
504 | } | |
505 | if (!IS_WS(conf, *p)) { | |
506 | break; | |
507 | } | |
508 | p++; | |
509 | } | |
510 | ||
511 | for (;;) { | |
512 | if (IS_COMMENT(conf, *p)) { | |
513 | *p = '\0'; | |
514 | return; | |
515 | } | |
516 | if (IS_DQUOTE(conf, *p)) { | |
517 | p = scan_dquote(conf, p); | |
518 | continue; | |
519 | } | |
520 | if (IS_QUOTE(conf, *p)) { | |
521 | p = scan_quote(conf, p); | |
522 | continue; | |
523 | } | |
524 | if (IS_ESC(conf, *p)) { | |
525 | p = scan_esc(conf, p); | |
526 | continue; | |
527 | } | |
528 | if (IS_EOF(conf, *p)) | |
529 | return; | |
530 | else | |
531 | p++; | |
532 | } | |
533 | } | |
d02b48c6 | 534 | |
d86b6915 | 535 | static int str_copy(CONF *conf, char *section, char **pto, char *from) |
0f113f3e MC |
536 | { |
537 | int q, r, rr = 0, to = 0, len = 0; | |
538 | char *s, *e, *rp, *p, *rrp, *np, *cp, v; | |
539 | BUF_MEM *buf; | |
540 | ||
541 | if ((buf = BUF_MEM_new()) == NULL) | |
a2371fa9 | 542 | return 0; |
0f113f3e MC |
543 | |
544 | len = strlen(from) + 1; | |
545 | if (!BUF_MEM_grow(buf, len)) | |
546 | goto err; | |
547 | ||
548 | for (;;) { | |
549 | if (IS_QUOTE(conf, *from)) { | |
550 | q = *from; | |
551 | from++; | |
552 | while (!IS_EOF(conf, *from) && (*from != q)) { | |
553 | if (IS_ESC(conf, *from)) { | |
554 | from++; | |
555 | if (IS_EOF(conf, *from)) | |
556 | break; | |
557 | } | |
558 | buf->data[to++] = *(from++); | |
559 | } | |
560 | if (*from == q) | |
561 | from++; | |
562 | } else if (IS_DQUOTE(conf, *from)) { | |
563 | q = *from; | |
564 | from++; | |
565 | while (!IS_EOF(conf, *from)) { | |
566 | if (*from == q) { | |
567 | if (*(from + 1) == q) { | |
568 | from++; | |
569 | } else { | |
570 | break; | |
571 | } | |
572 | } | |
573 | buf->data[to++] = *(from++); | |
574 | } | |
575 | if (*from == q) | |
576 | from++; | |
577 | } else if (IS_ESC(conf, *from)) { | |
578 | from++; | |
579 | v = *(from++); | |
580 | if (IS_EOF(conf, v)) | |
581 | break; | |
582 | else if (v == 'r') | |
583 | v = '\r'; | |
584 | else if (v == 'n') | |
585 | v = '\n'; | |
586 | else if (v == 'b') | |
587 | v = '\b'; | |
588 | else if (v == 't') | |
589 | v = '\t'; | |
590 | buf->data[to++] = v; | |
591 | } else if (IS_EOF(conf, *from)) | |
592 | break; | |
593 | else if (*from == '$') { | |
8a585601 MC |
594 | size_t newsize; |
595 | ||
0f113f3e MC |
596 | /* try to expand it */ |
597 | rrp = NULL; | |
598 | s = &(from[1]); | |
599 | if (*s == '{') | |
600 | q = '}'; | |
601 | else if (*s == '(') | |
602 | q = ')'; | |
603 | else | |
604 | q = 0; | |
605 | ||
606 | if (q) | |
607 | s++; | |
608 | cp = section; | |
609 | e = np = s; | |
69e2b8d6 | 610 | while (IS_ALNUM(conf, *e)) |
0f113f3e MC |
611 | e++; |
612 | if ((e[0] == ':') && (e[1] == ':')) { | |
613 | cp = np; | |
614 | rrp = e; | |
615 | rr = *e; | |
616 | *rrp = '\0'; | |
617 | e += 2; | |
618 | np = e; | |
69e2b8d6 | 619 | while (IS_ALNUM(conf, *e)) |
0f113f3e MC |
620 | e++; |
621 | } | |
622 | r = *e; | |
623 | *e = '\0'; | |
624 | rp = e; | |
625 | if (q) { | |
626 | if (r != q) { | |
627 | CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE); | |
628 | goto err; | |
629 | } | |
630 | e++; | |
631 | } | |
50e735f9 MC |
632 | /*- |
633 | * So at this point we have | |
634 | * np which is the start of the name string which is | |
635 | * '\0' terminated. | |
636 | * cp which is the start of the section string which is | |
637 | * '\0' terminated. | |
638 | * e is the 'next point after'. | |
639 | * r and rr are the chars replaced by the '\0' | |
640 | * rp and rrp is where 'r' and 'rr' came from. | |
641 | */ | |
0f113f3e MC |
642 | p = _CONF_get_string(conf, cp, np); |
643 | if (rrp != NULL) | |
644 | *rrp = rr; | |
645 | *rp = r; | |
646 | if (p == NULL) { | |
647 | CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE); | |
648 | goto err; | |
649 | } | |
8a585601 MC |
650 | newsize = strlen(p) + buf->length - (e - from); |
651 | if (newsize > MAX_CONF_VALUE_LENGTH) { | |
652 | CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_EXPANSION_TOO_LONG); | |
653 | goto err; | |
654 | } | |
655 | if (!BUF_MEM_grow_clean(buf, newsize)) { | |
b0333e69 GP |
656 | CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE); |
657 | goto err; | |
658 | } | |
0f113f3e MC |
659 | while (*p) |
660 | buf->data[to++] = *(p++); | |
661 | ||
662 | /* | |
663 | * Since we change the pointer 'from', we also have to change the | |
664 | * perceived length of the string it points at. /RL | |
665 | */ | |
666 | len -= e - from; | |
667 | from = e; | |
668 | ||
669 | /* | |
670 | * In case there were no braces or parenthesis around the | |
671 | * variable reference, we have to put back the character that was | |
672 | * replaced with a '\0'. /RL | |
673 | */ | |
674 | *rp = r; | |
675 | } else | |
676 | buf->data[to++] = *(from++); | |
677 | } | |
678 | buf->data[to] = '\0'; | |
b548a1f1 | 679 | OPENSSL_free(*pto); |
0f113f3e MC |
680 | *pto = buf->data; |
681 | OPENSSL_free(buf); | |
a2371fa9 | 682 | return 1; |
0f113f3e | 683 | err: |
25aaa98a | 684 | BUF_MEM_free(buf); |
a2371fa9 | 685 | return 0; |
0f113f3e | 686 | } |
d02b48c6 | 687 | |
b524b808 TM |
688 | #ifndef OPENSSL_NO_POSIX_IO |
689 | /* | |
690 | * Check whether included path is a directory. | |
691 | * Returns next BIO to process and in case of a directory | |
692 | * also an opened directory context and the include path. | |
693 | */ | |
694 | static BIO *process_include(char *include, OPENSSL_DIR_CTX **dirctx, | |
695 | char **dirpath) | |
696 | { | |
2661d716 | 697 | struct stat st; |
b524b808 TM |
698 | BIO *next; |
699 | ||
700 | if (stat(include, &st) < 0) { | |
ff988500 RS |
701 | ERR_raise_data(ERR_LIB_SYS, errno, |
702 | "calling stat(%s)", | |
703 | include); | |
b524b808 TM |
704 | /* missing include file is not fatal error */ |
705 | return NULL; | |
706 | } | |
707 | ||
f20aa69e | 708 | if (S_ISDIR(st.st_mode)) { |
b524b808 TM |
709 | if (*dirctx != NULL) { |
710 | CONFerr(CONF_F_PROCESS_INCLUDE, | |
711 | CONF_R_RECURSIVE_DIRECTORY_INCLUDE); | |
712 | ERR_add_error_data(1, include); | |
713 | return NULL; | |
714 | } | |
715 | /* a directory, load its contents */ | |
716 | if ((next = get_next_file(include, dirctx)) != NULL) | |
717 | *dirpath = include; | |
718 | return next; | |
719 | } | |
720 | ||
721 | next = BIO_new_file(include, "r"); | |
722 | return next; | |
723 | } | |
724 | ||
725 | /* | |
726 | * Get next file from the directory path. | |
727 | * Returns BIO of the next file to read and updates dirctx. | |
728 | */ | |
729 | static BIO *get_next_file(const char *path, OPENSSL_DIR_CTX **dirctx) | |
730 | { | |
731 | const char *filename; | |
732 | ||
733 | while ((filename = OPENSSL_DIR_read(dirctx, path)) != NULL) { | |
734 | size_t namelen; | |
735 | ||
736 | namelen = strlen(filename); | |
737 | ||
4f7c840a | 738 | |
b524b808 TM |
739 | if ((namelen > 5 && strcasecmp(filename + namelen - 5, ".conf") == 0) |
740 | || (namelen > 4 && strcasecmp(filename + namelen - 4, ".cnf") == 0)) { | |
741 | size_t newlen; | |
742 | char *newpath; | |
743 | BIO *bio; | |
744 | ||
745 | newlen = strlen(path) + namelen + 2; | |
746 | newpath = OPENSSL_zalloc(newlen); | |
747 | if (newpath == NULL) { | |
748 | CONFerr(CONF_F_GET_NEXT_FILE, ERR_R_MALLOC_FAILURE); | |
749 | break; | |
750 | } | |
4f7c840a RL |
751 | #ifdef OPENSSL_SYS_VMS |
752 | /* | |
753 | * If the given path isn't clear VMS syntax, | |
754 | * we treat it as on Unix. | |
755 | */ | |
756 | { | |
757 | size_t pathlen = strlen(path); | |
758 | ||
759 | if (path[pathlen - 1] == ']' || path[pathlen - 1] == '>' | |
760 | || path[pathlen - 1] == ':') { | |
761 | /* Clear VMS directory syntax, just copy as is */ | |
762 | OPENSSL_strlcpy(newpath, path, newlen); | |
763 | } | |
764 | } | |
b524b808 | 765 | #endif |
4f7c840a RL |
766 | if (newpath[0] == '\0') { |
767 | OPENSSL_strlcpy(newpath, path, newlen); | |
768 | OPENSSL_strlcat(newpath, "/", newlen); | |
769 | } | |
b524b808 TM |
770 | OPENSSL_strlcat(newpath, filename, newlen); |
771 | ||
772 | bio = BIO_new_file(newpath, "r"); | |
773 | OPENSSL_free(newpath); | |
774 | /* Errors when opening files are non-fatal. */ | |
775 | if (bio != NULL) | |
776 | return bio; | |
777 | } | |
778 | } | |
779 | OPENSSL_DIR_end(dirctx); | |
780 | *dirctx = NULL; | |
781 | return NULL; | |
782 | } | |
783 | #endif | |
784 | ||
a9b7a06e DMSP |
785 | static int is_keytype(const CONF *conf, char c, unsigned short type) |
786 | { | |
787 | const unsigned short * keytypes = (const unsigned short *) conf->meth_data; | |
788 | unsigned char key = (unsigned char)c; | |
789 | ||
790 | #ifdef CHARSET_EBCDIC | |
791 | # if CHAR_BIT > 8 | |
792 | if (key > 255) { | |
793 | /* key is out of range for os_toascii table */ | |
794 | return 0; | |
795 | } | |
796 | # endif | |
797 | /* convert key from ebcdic to ascii */ | |
798 | key = os_toascii[key]; | |
799 | #endif | |
800 | ||
801 | if (key > 127) { | |
802 | /* key is not a seven bit ascii character */ | |
803 | return 0; | |
804 | } | |
805 | ||
806 | return (keytypes[key] & type) ? 1 : 0; | |
807 | } | |
808 | ||
d86b6915 | 809 | static char *eat_ws(CONF *conf, char *p) |
0f113f3e MC |
810 | { |
811 | while (IS_WS(conf, *p) && (!IS_EOF(conf, *p))) | |
812 | p++; | |
a2371fa9 | 813 | return p; |
0f113f3e | 814 | } |
d02b48c6 | 815 | |
b524b808 TM |
816 | static void trim_ws(CONF *conf, char *start) |
817 | { | |
818 | char *p = start; | |
819 | ||
820 | while (!IS_EOF(conf, *p)) | |
821 | p++; | |
822 | p--; | |
823 | while ((p >= start) && IS_WS(conf, *p)) | |
824 | p--; | |
825 | p++; | |
826 | *p = '\0'; | |
827 | } | |
828 | ||
d86b6915 | 829 | static char *eat_alpha_numeric(CONF *conf, char *p) |
0f113f3e MC |
830 | { |
831 | for (;;) { | |
832 | if (IS_ESC(conf, *p)) { | |
833 | p = scan_esc(conf, p); | |
834 | continue; | |
835 | } | |
69e2b8d6 | 836 | if (!IS_ALNUM_PUNCT(conf, *p)) |
a2371fa9 | 837 | return p; |
0f113f3e MC |
838 | p++; |
839 | } | |
840 | } | |
d02b48c6 | 841 | |
d86b6915 | 842 | static char *scan_quote(CONF *conf, char *p) |
0f113f3e MC |
843 | { |
844 | int q = *p; | |
845 | ||
846 | p++; | |
847 | while (!(IS_EOF(conf, *p)) && (*p != q)) { | |
848 | if (IS_ESC(conf, *p)) { | |
849 | p++; | |
850 | if (IS_EOF(conf, *p)) | |
a2371fa9 | 851 | return p; |
0f113f3e MC |
852 | } |
853 | p++; | |
854 | } | |
855 | if (*p == q) | |
856 | p++; | |
a2371fa9 | 857 | return p; |
0f113f3e | 858 | } |
d86b6915 RL |
859 | |
860 | static char *scan_dquote(CONF *conf, char *p) | |
0f113f3e MC |
861 | { |
862 | int q = *p; | |
863 | ||
864 | p++; | |
865 | while (!(IS_EOF(conf, *p))) { | |
866 | if (*p == q) { | |
867 | if (*(p + 1) == q) { | |
868 | p++; | |
869 | } else { | |
870 | break; | |
871 | } | |
872 | } | |
873 | p++; | |
874 | } | |
875 | if (*p == q) | |
876 | p++; | |
a2371fa9 | 877 | return p; |
0f113f3e | 878 | } |
d02b48c6 | 879 | |
2a056de8 | 880 | static void dump_value_doall_arg(const CONF_VALUE *a, BIO *out) |
0f113f3e MC |
881 | { |
882 | if (a->name) | |
883 | BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value); | |
884 | else | |
885 | BIO_printf(out, "[[%s]]\n", a->section); | |
886 | } | |
d86b6915 | 887 | |
2a056de8 | 888 | IMPLEMENT_LHASH_DOALL_ARG_CONST(CONF_VALUE, BIO); |
3c914840 | 889 | |
9dd5ae65 | 890 | static int def_dump(const CONF *conf, BIO *out) |
0f113f3e | 891 | { |
2a056de8 | 892 | lh_CONF_VALUE_doall_BIO(conf->data, dump_value_doall_arg, out); |
0f113f3e MC |
893 | return 1; |
894 | } | |
d02b48c6 | 895 | |
9dd5ae65 | 896 | static int def_is_number(const CONF *conf, char c) |
0f113f3e MC |
897 | { |
898 | return IS_NUMBER(conf, c); | |
899 | } | |
d02b48c6 | 900 | |
9dd5ae65 | 901 | static int def_to_int(const CONF *conf, char c) |
0f113f3e MC |
902 | { |
903 | return c - '0'; | |
904 | } |