1 /* crypto/conf/conf.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
59 /* Part of the code in here was originally in conf.c, which is now removed */
64 #include <openssl/stack.h>
65 #include <openssl/lhash.h>
66 #include <openssl/conf.h>
67 #include <openssl/conf_api.h>
69 #include <openssl/buffer.h>
70 #include <openssl/err.h>
72 static char *eat_ws(CONF *conf, char *p);
73 static char *eat_alpha_numeric(CONF *conf, char *p);
74 static void clear_comments(CONF *conf, char *p);
75 static int str_copy(CONF *conf, char *section, char **to, char *from);
76 static char *scan_quote(CONF *conf, char *p);
77 static char *scan_dquote(CONF *conf, char *p);
78 #define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2)))
80 static CONF *def_create(CONF_METHOD *meth);
81 static int def_init_default(CONF *conf);
82 static int def_init_WIN32(CONF *conf);
83 static int def_destroy(CONF *conf);
84 static int def_destroy_data(CONF *conf);
85 static int def_load(CONF *conf, const char *name, long *eline);
86 static int def_load_bio(CONF *conf, BIO *bp, long *eline);
87 static int def_dump(const CONF *conf, BIO *bp);
88 static int def_is_number(const CONF *conf, char c);
89 static int def_to_int(const CONF *conf, char c);
91 const char CONF_def_version[] = "CONF_def" OPENSSL_VERSION_PTEXT;
93 static CONF_METHOD default_method = {
106 static CONF_METHOD WIN32_method = {
119 CONF_METHOD *NCONF_default()
121 return &default_method;
124 CONF_METHOD *NCONF_WIN32()
126 return &WIN32_method;
129 static CONF *def_create(CONF_METHOD *meth)
133 ret = OPENSSL_malloc(sizeof(CONF) + sizeof(unsigned short *));
135 if (meth->init(ret) == 0) {
142 static int def_init_default(CONF *conf)
147 conf->meth = &default_method;
148 conf->meth_data = CONF_type_default;
154 static int def_init_WIN32(CONF *conf)
159 conf->meth = &WIN32_method;
160 conf->meth_data = (void *)CONF_type_win32;
166 static int def_destroy(CONF *conf)
168 if (def_destroy_data(conf)) {
175 static int def_destroy_data(CONF *conf)
179 _CONF_free_data(conf);
183 static int def_load(CONF *conf, const char *name, long *line)
188 #ifdef OPENSSL_SYS_VMS
189 in = BIO_new_file(name, "r");
191 in = BIO_new_file(name, "rb");
194 if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
195 CONFerr(CONF_F_DEF_LOAD, CONF_R_NO_SUCH_FILE);
197 CONFerr(CONF_F_DEF_LOAD, ERR_R_SYS_LIB);
201 ret = def_load_bio(conf, in, line);
207 static int def_load_bio(CONF *conf, BIO *in, long *line)
209 /* The macro BUFSIZE conflicts with a system macro in VxWorks */
210 #define CONFBUFSIZE 512
211 int bufnum = 0, i, ii;
212 BUF_MEM *buff = NULL;
216 char btmp[DECIMAL_SIZE(eline) + 1];
217 CONF_VALUE *v = NULL, *tv;
218 CONF_VALUE *sv = NULL;
219 char *section = NULL, *buf;
220 char *start, *psection, *pname;
221 void *h = (void *)(conf->data);
223 if ((buff = BUF_MEM_new()) == NULL) {
224 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
228 section = (char *)OPENSSL_malloc(10);
229 if (section == NULL) {
230 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
233 BUF_strlcpy(section, "default", 10);
235 if (_CONF_new_data(conf) == 0) {
236 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
240 sv = _CONF_new_section(conf, section);
242 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
249 if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
250 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
253 p = &(buff->data[bufnum]);
255 BIO_gets(in, p, CONFBUFSIZE - 1);
256 p[CONFBUFSIZE - 1] = '\0';
258 if (i == 0 && !again)
262 if ((p[i - 1] != '\r') && (p[i - 1] != '\n'))
268 * we removed some trailing stuff so there is a new line on the end.
271 again = 1; /* long line */
274 eline++; /* another input line */
277 /* we now have a line with trailing \r\n removed */
279 /* i is the number of bytes */
283 /* check for line continuation */
286 * If we have bytes and the last char '\\' and second last char
289 p = &(buff->data[bufnum - 1]);
290 if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
300 clear_comments(conf, buf);
301 s = eat_ws(conf, buf);
302 if (IS_EOF(conf, *s))
303 continue; /* blank line */
308 start = eat_ws(conf, s);
311 end = eat_alpha_numeric(conf, ss);
312 p = eat_ws(conf, end);
314 if (*p != '\0' && ss != p) {
318 CONFerr(CONF_F_DEF_LOAD_BIO,
319 CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
323 if (!str_copy(conf, NULL, §ion, start))
325 if ((sv = _CONF_get_section(conf, section)) == NULL)
326 sv = _CONF_new_section(conf, section);
328 CONFerr(CONF_F_DEF_LOAD_BIO,
329 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
336 end = eat_alpha_numeric(conf, s);
337 if ((end[0] == ':') && (end[1] == ':')) {
342 end = eat_alpha_numeric(conf, end);
344 p = eat_ws(conf, end);
346 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
351 start = eat_ws(conf, p);
352 while (!IS_EOF(conf, *p))
355 while ((p != start) && (IS_WS(conf, *p)))
360 if (!(v = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) {
361 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
364 if (psection == NULL)
366 v->name = (char *)OPENSSL_malloc(strlen(pname) + 1);
368 if (v->name == NULL) {
369 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
372 BUF_strlcpy(v->name, pname, strlen(pname) + 1);
373 if (!str_copy(conf, psection, &(v->value), start))
376 if (strcmp(psection, section) != 0) {
377 if ((tv = _CONF_get_section(conf, psection))
379 tv = _CONF_new_section(conf, psection);
381 CONFerr(CONF_F_DEF_LOAD_BIO,
382 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
388 if (_CONF_add_string(conf, tv, v) == 0) {
389 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
393 v->section = tv->section;
394 if (!sk_CONF_VALUE_push(ts, v)) {
395 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
398 vv = (CONF_VALUE *)lh_insert(conf->data, v);
400 sk_CONF_VALUE_delete_ptr(ts, vv);
401 OPENSSL_free(vv->name);
402 OPENSSL_free(vv->value);
412 OPENSSL_free(section);
418 OPENSSL_free(section);
421 BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
422 ERR_add_error_data(2, "line ", btmp);
423 if ((h != conf->data) && (conf->data != NULL)) {
424 CONF_free(conf->data);
429 OPENSSL_free(v->name);
430 if (v->value != NULL)
431 OPENSSL_free(v->value);
438 static void clear_comments(CONF *conf, char *p)
441 if (IS_FCOMMENT(conf, *p)) {
445 if (!IS_WS(conf, *p)) {
452 if (IS_COMMENT(conf, *p)) {
456 if (IS_DQUOTE(conf, *p)) {
457 p = scan_dquote(conf, p);
460 if (IS_QUOTE(conf, *p)) {
461 p = scan_quote(conf, p);
464 if (IS_ESC(conf, *p)) {
465 p = scan_esc(conf, p);
468 if (IS_EOF(conf, *p))
475 static int str_copy(CONF *conf, char *section, char **pto, char *from)
477 int q, r, rr = 0, to = 0, len = 0;
478 char *s, *e, *rp, *p, *rrp, *np, *cp, v;
481 if ((buf = BUF_MEM_new()) == NULL)
484 len = strlen(from) + 1;
485 if (!BUF_MEM_grow(buf, len))
489 if (IS_QUOTE(conf, *from)) {
492 while (!IS_EOF(conf, *from) && (*from != q)) {
493 if (IS_ESC(conf, *from)) {
495 if (IS_EOF(conf, *from))
498 buf->data[to++] = *(from++);
502 } else if (IS_DQUOTE(conf, *from)) {
505 while (!IS_EOF(conf, *from)) {
507 if (*(from + 1) == q) {
513 buf->data[to++] = *(from++);
517 } else if (IS_ESC(conf, *from)) {
531 } else if (IS_EOF(conf, *from))
533 else if (*from == '$') {
534 /* try to expand it */
548 while (IS_ALPHA_NUMERIC(conf, *e))
550 if ((e[0] == ':') && (e[1] == ':')) {
557 while (IS_ALPHA_NUMERIC(conf, *e))
565 CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE);
571 * So at this point we have
572 * np which is the start of the name string which is
574 * cp which is the start of the section string which is
576 * e is the 'next point after'.
577 * r and rr are the chars replaced by the '\0'
578 * rp and rrp is where 'r' and 'rr' came from.
580 p = _CONF_get_string(conf, cp, np);
585 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE);
588 if (!BUF_MEM_grow_clean(buf,
589 (strlen(p) + buf->length - (e - from)))) {
590 CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE);
594 buf->data[to++] = *(p++);
597 * Since we change the pointer 'from', we also have to change the
598 * perceived length of the string it points at. /RL
604 * In case there were no braces or parenthesis around the
605 * variable reference, we have to put back the character that was
606 * replaced with a '\0'. /RL
610 buf->data[to++] = *(from++);
612 buf->data[to] = '\0';
624 static char *eat_ws(CONF *conf, char *p)
626 while (IS_WS(conf, *p) && (!IS_EOF(conf, *p)))
631 static char *eat_alpha_numeric(CONF *conf, char *p)
634 if (IS_ESC(conf, *p)) {
635 p = scan_esc(conf, p);
638 if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p))
644 static char *scan_quote(CONF *conf, char *p)
649 while (!(IS_EOF(conf, *p)) && (*p != q)) {
650 if (IS_ESC(conf, *p)) {
652 if (IS_EOF(conf, *p))
662 static char *scan_dquote(CONF *conf, char *p)
667 while (!(IS_EOF(conf, *p))) {
682 static void dump_value_doall_arg(CONF_VALUE *a, BIO *out)
685 BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
687 BIO_printf(out, "[[%s]]\n", a->section);
690 static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE, BIO)
692 static int def_dump(const CONF *conf, BIO *out)
694 lh_CONF_VALUE_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value),
699 static int def_is_number(const CONF *conf, char c)
701 return IS_NUMBER(conf, c);
704 static int def_to_int(const CONF *conf, char c)