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 = BUF_strdup("default");
229 if (section == NULL) {
230 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
234 if (_CONF_new_data(conf) == 0) {
235 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
239 sv = _CONF_new_section(conf, section);
241 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
248 if (!BUF_MEM_grow(buff, bufnum + CONFBUFSIZE)) {
249 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_BUF_LIB);
252 p = &(buff->data[bufnum]);
254 BIO_gets(in, p, CONFBUFSIZE - 1);
255 p[CONFBUFSIZE - 1] = '\0';
257 if (i == 0 && !again)
261 if ((p[i - 1] != '\r') && (p[i - 1] != '\n'))
267 * we removed some trailing stuff so there is a new line on the end.
270 again = 1; /* long line */
273 eline++; /* another input line */
276 /* we now have a line with trailing \r\n removed */
278 /* i is the number of bytes */
282 /* check for line continuation */
285 * If we have bytes and the last char '\\' and second last char
288 p = &(buff->data[bufnum - 1]);
289 if (IS_ESC(conf, p[0]) && ((bufnum <= 1) || !IS_ESC(conf, p[-1]))) {
299 clear_comments(conf, buf);
300 s = eat_ws(conf, buf);
301 if (IS_EOF(conf, *s))
302 continue; /* blank line */
307 start = eat_ws(conf, s);
310 end = eat_alpha_numeric(conf, ss);
311 p = eat_ws(conf, end);
313 if (*p != '\0' && ss != p) {
317 CONFerr(CONF_F_DEF_LOAD_BIO,
318 CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
322 if (!str_copy(conf, NULL, §ion, start))
324 if ((sv = _CONF_get_section(conf, section)) == NULL)
325 sv = _CONF_new_section(conf, section);
327 CONFerr(CONF_F_DEF_LOAD_BIO,
328 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
335 end = eat_alpha_numeric(conf, s);
336 if ((end[0] == ':') && (end[1] == ':')) {
341 end = eat_alpha_numeric(conf, end);
343 p = eat_ws(conf, end);
345 CONFerr(CONF_F_DEF_LOAD_BIO, CONF_R_MISSING_EQUAL_SIGN);
350 start = eat_ws(conf, p);
351 while (!IS_EOF(conf, *p))
354 while ((p != start) && (IS_WS(conf, *p)))
359 if (!(v = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) {
360 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
363 if (psection == NULL)
365 v->name = (char *)OPENSSL_malloc(strlen(pname) + 1);
367 if (v->name == NULL) {
368 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
371 BUF_strlcpy(v->name, pname, strlen(pname) + 1);
372 if (!str_copy(conf, psection, &(v->value), start))
375 if (strcmp(psection, section) != 0) {
376 if ((tv = _CONF_get_section(conf, psection))
378 tv = _CONF_new_section(conf, psection);
380 CONFerr(CONF_F_DEF_LOAD_BIO,
381 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
387 if (_CONF_add_string(conf, tv, v) == 0) {
388 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
392 v->section = tv->section;
393 if (!sk_CONF_VALUE_push(ts, v)) {
394 CONFerr(CONF_F_DEF_LOAD_BIO, ERR_R_MALLOC_FAILURE);
397 vv = (CONF_VALUE *)lh_insert(conf->data, v);
399 sk_CONF_VALUE_delete_ptr(ts, vv);
400 OPENSSL_free(vv->name);
401 OPENSSL_free(vv->value);
411 OPENSSL_free(section);
417 OPENSSL_free(section);
420 BIO_snprintf(btmp, sizeof btmp, "%ld", eline);
421 ERR_add_error_data(2, "line ", btmp);
422 if ((h != conf->data) && (conf->data != NULL)) {
423 CONF_free(conf->data);
428 OPENSSL_free(v->name);
429 if (v->value != NULL)
430 OPENSSL_free(v->value);
437 static void clear_comments(CONF *conf, char *p)
440 if (IS_FCOMMENT(conf, *p)) {
444 if (!IS_WS(conf, *p)) {
451 if (IS_COMMENT(conf, *p)) {
455 if (IS_DQUOTE(conf, *p)) {
456 p = scan_dquote(conf, p);
459 if (IS_QUOTE(conf, *p)) {
460 p = scan_quote(conf, p);
463 if (IS_ESC(conf, *p)) {
464 p = scan_esc(conf, p);
467 if (IS_EOF(conf, *p))
474 static int str_copy(CONF *conf, char *section, char **pto, char *from)
476 int q, r, rr = 0, to = 0, len = 0;
477 char *s, *e, *rp, *p, *rrp, *np, *cp, v;
480 if ((buf = BUF_MEM_new()) == NULL)
483 len = strlen(from) + 1;
484 if (!BUF_MEM_grow(buf, len))
488 if (IS_QUOTE(conf, *from)) {
491 while (!IS_EOF(conf, *from) && (*from != q)) {
492 if (IS_ESC(conf, *from)) {
494 if (IS_EOF(conf, *from))
497 buf->data[to++] = *(from++);
501 } else if (IS_DQUOTE(conf, *from)) {
504 while (!IS_EOF(conf, *from)) {
506 if (*(from + 1) == q) {
512 buf->data[to++] = *(from++);
516 } else if (IS_ESC(conf, *from)) {
530 } else if (IS_EOF(conf, *from))
532 else if (*from == '$') {
533 /* try to expand it */
547 while (IS_ALPHA_NUMERIC(conf, *e))
549 if ((e[0] == ':') && (e[1] == ':')) {
556 while (IS_ALPHA_NUMERIC(conf, *e))
564 CONFerr(CONF_F_STR_COPY, CONF_R_NO_CLOSE_BRACE);
570 * So at this point we have
571 * np which is the start of the name string which is
573 * cp which is the start of the section string which is
575 * e is the 'next point after'.
576 * r and rr are the chars replaced by the '\0'
577 * rp and rrp is where 'r' and 'rr' came from.
579 p = _CONF_get_string(conf, cp, np);
584 CONFerr(CONF_F_STR_COPY, CONF_R_VARIABLE_HAS_NO_VALUE);
587 if (!BUF_MEM_grow_clean(buf,
588 (strlen(p) + buf->length - (e - from)))) {
589 CONFerr(CONF_F_STR_COPY, ERR_R_MALLOC_FAILURE);
593 buf->data[to++] = *(p++);
596 * Since we change the pointer 'from', we also have to change the
597 * perceived length of the string it points at. /RL
603 * In case there were no braces or parenthesis around the
604 * variable reference, we have to put back the character that was
605 * replaced with a '\0'. /RL
609 buf->data[to++] = *(from++);
611 buf->data[to] = '\0';
623 static char *eat_ws(CONF *conf, char *p)
625 while (IS_WS(conf, *p) && (!IS_EOF(conf, *p)))
630 static char *eat_alpha_numeric(CONF *conf, char *p)
633 if (IS_ESC(conf, *p)) {
634 p = scan_esc(conf, p);
637 if (!IS_ALPHA_NUMERIC_PUNCT(conf, *p))
643 static char *scan_quote(CONF *conf, char *p)
648 while (!(IS_EOF(conf, *p)) && (*p != q)) {
649 if (IS_ESC(conf, *p)) {
651 if (IS_EOF(conf, *p))
661 static char *scan_dquote(CONF *conf, char *p)
666 while (!(IS_EOF(conf, *p))) {
681 static void dump_value_doall_arg(CONF_VALUE *a, BIO *out)
684 BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
686 BIO_printf(out, "[[%s]]\n", a->section);
689 static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE, BIO)
691 static int def_dump(const CONF *conf, BIO *out)
693 lh_CONF_VALUE_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value),
698 static int def_is_number(const CONF *conf, char c)
700 return IS_NUMBER(conf, c);
703 static int def_to_int(const CONF *conf, char c)