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 */
63 #include "internal/cryptlib.h"
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 static CONF_METHOD default_method
= {
104 static CONF_METHOD WIN32_method
= {
117 CONF_METHOD
*NCONF_default()
119 return &default_method
;
122 CONF_METHOD
*NCONF_WIN32()
124 return &WIN32_method
;
127 static CONF
*def_create(CONF_METHOD
*meth
)
131 ret
= OPENSSL_malloc(sizeof(*ret
));
133 if (meth
->init(ret
) == 0) {
140 static int def_init_default(CONF
*conf
)
145 conf
->meth
= &default_method
;
146 conf
->meth_data
= (void *)CONF_type_default
;
152 static int def_init_WIN32(CONF
*conf
)
157 conf
->meth
= &WIN32_method
;
158 conf
->meth_data
= (void *)CONF_type_win32
;
164 static int def_destroy(CONF
*conf
)
166 if (def_destroy_data(conf
)) {
173 static int def_destroy_data(CONF
*conf
)
177 _CONF_free_data(conf
);
181 static int def_load(CONF
*conf
, const char *name
, long *line
)
186 #ifdef OPENSSL_SYS_VMS
187 in
= BIO_new_file(name
, "r");
189 in
= BIO_new_file(name
, "rb");
192 if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE
)
193 CONFerr(CONF_F_DEF_LOAD
, CONF_R_NO_SUCH_FILE
);
195 CONFerr(CONF_F_DEF_LOAD
, ERR_R_SYS_LIB
);
199 ret
= def_load_bio(conf
, in
, line
);
205 static int def_load_bio(CONF
*conf
, BIO
*in
, long *line
)
207 /* The macro BUFSIZE conflicts with a system macro in VxWorks */
208 #define CONFBUFSIZE 512
209 int bufnum
= 0, i
, ii
;
210 BUF_MEM
*buff
= NULL
;
214 char btmp
[DECIMAL_SIZE(eline
) + 1];
215 CONF_VALUE
*v
= NULL
, *tv
;
216 CONF_VALUE
*sv
= NULL
;
217 char *section
= NULL
, *buf
;
218 char *start
, *psection
, *pname
;
219 void *h
= (void *)(conf
->data
);
221 if ((buff
= BUF_MEM_new()) == NULL
) {
222 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_BUF_LIB
);
226 section
= OPENSSL_strdup("default");
227 if (section
== NULL
) {
228 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_MALLOC_FAILURE
);
232 if (_CONF_new_data(conf
) == 0) {
233 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_MALLOC_FAILURE
);
237 sv
= _CONF_new_section(conf
, section
);
239 CONFerr(CONF_F_DEF_LOAD_BIO
, CONF_R_UNABLE_TO_CREATE_NEW_SECTION
);
246 if (!BUF_MEM_grow(buff
, bufnum
+ CONFBUFSIZE
)) {
247 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_BUF_LIB
);
250 p
= &(buff
->data
[bufnum
]);
252 BIO_gets(in
, p
, CONFBUFSIZE
- 1);
253 p
[CONFBUFSIZE
- 1] = '\0';
255 if (i
== 0 && !again
)
259 if ((p
[i
- 1] != '\r') && (p
[i
- 1] != '\n'))
265 * we removed some trailing stuff so there is a new line on the end.
268 again
= 1; /* long line */
271 eline
++; /* another input line */
274 /* we now have a line with trailing \r\n removed */
276 /* i is the number of bytes */
280 /* check for line continuation */
283 * If we have bytes and the last char '\\' and second last char
286 p
= &(buff
->data
[bufnum
- 1]);
287 if (IS_ESC(conf
, p
[0]) && ((bufnum
<= 1) || !IS_ESC(conf
, p
[-1]))) {
297 clear_comments(conf
, buf
);
298 s
= eat_ws(conf
, buf
);
299 if (IS_EOF(conf
, *s
))
300 continue; /* blank line */
305 start
= eat_ws(conf
, s
);
308 end
= eat_alpha_numeric(conf
, ss
);
309 p
= eat_ws(conf
, end
);
311 if (*p
!= '\0' && ss
!= p
) {
315 CONFerr(CONF_F_DEF_LOAD_BIO
,
316 CONF_R_MISSING_CLOSE_SQUARE_BRACKET
);
320 if (!str_copy(conf
, NULL
, §ion
, start
))
322 if ((sv
= _CONF_get_section(conf
, section
)) == NULL
)
323 sv
= _CONF_new_section(conf
, section
);
325 CONFerr(CONF_F_DEF_LOAD_BIO
,
326 CONF_R_UNABLE_TO_CREATE_NEW_SECTION
);
333 end
= eat_alpha_numeric(conf
, s
);
334 if ((end
[0] == ':') && (end
[1] == ':')) {
339 end
= eat_alpha_numeric(conf
, end
);
341 p
= eat_ws(conf
, end
);
343 CONFerr(CONF_F_DEF_LOAD_BIO
, CONF_R_MISSING_EQUAL_SIGN
);
348 start
= eat_ws(conf
, p
);
349 while (!IS_EOF(conf
, *p
))
352 while ((p
!= start
) && (IS_WS(conf
, *p
)))
357 if ((v
= OPENSSL_malloc(sizeof(*v
))) == NULL
) {
358 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_MALLOC_FAILURE
);
361 if (psection
== NULL
)
363 v
->name
= OPENSSL_malloc(strlen(pname
) + 1);
365 if (v
->name
== NULL
) {
366 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_MALLOC_FAILURE
);
369 OPENSSL_strlcpy(v
->name
, pname
, strlen(pname
) + 1);
370 if (!str_copy(conf
, psection
, &(v
->value
), start
))
373 if (strcmp(psection
, section
) != 0) {
374 if ((tv
= _CONF_get_section(conf
, psection
))
376 tv
= _CONF_new_section(conf
, psection
);
378 CONFerr(CONF_F_DEF_LOAD_BIO
,
379 CONF_R_UNABLE_TO_CREATE_NEW_SECTION
);
384 if (_CONF_add_string(conf
, tv
, v
) == 0) {
385 CONFerr(CONF_F_DEF_LOAD_BIO
, ERR_R_MALLOC_FAILURE
);
392 OPENSSL_free(section
);
396 OPENSSL_free(section
);
399 BIO_snprintf(btmp
, sizeof btmp
, "%ld", eline
);
400 ERR_add_error_data(2, "line ", btmp
);
401 if (h
!= conf
->data
) {
402 CONF_free(conf
->data
);
406 OPENSSL_free(v
->name
);
407 OPENSSL_free(v
->value
);
413 static void clear_comments(CONF
*conf
, char *p
)
416 if (IS_FCOMMENT(conf
, *p
)) {
420 if (!IS_WS(conf
, *p
)) {
427 if (IS_COMMENT(conf
, *p
)) {
431 if (IS_DQUOTE(conf
, *p
)) {
432 p
= scan_dquote(conf
, p
);
435 if (IS_QUOTE(conf
, *p
)) {
436 p
= scan_quote(conf
, p
);
439 if (IS_ESC(conf
, *p
)) {
440 p
= scan_esc(conf
, p
);
443 if (IS_EOF(conf
, *p
))
450 static int str_copy(CONF
*conf
, char *section
, char **pto
, char *from
)
452 int q
, r
, rr
= 0, to
= 0, len
= 0;
453 char *s
, *e
, *rp
, *p
, *rrp
, *np
, *cp
, v
;
456 if ((buf
= BUF_MEM_new()) == NULL
)
459 len
= strlen(from
) + 1;
460 if (!BUF_MEM_grow(buf
, len
))
464 if (IS_QUOTE(conf
, *from
)) {
467 while (!IS_EOF(conf
, *from
) && (*from
!= q
)) {
468 if (IS_ESC(conf
, *from
)) {
470 if (IS_EOF(conf
, *from
))
473 buf
->data
[to
++] = *(from
++);
477 } else if (IS_DQUOTE(conf
, *from
)) {
480 while (!IS_EOF(conf
, *from
)) {
482 if (*(from
+ 1) == q
) {
488 buf
->data
[to
++] = *(from
++);
492 } else if (IS_ESC(conf
, *from
)) {
506 } else if (IS_EOF(conf
, *from
))
508 else if (*from
== '$') {
509 /* try to expand it */
523 while (IS_ALPHA_NUMERIC(conf
, *e
))
525 if ((e
[0] == ':') && (e
[1] == ':')) {
532 while (IS_ALPHA_NUMERIC(conf
, *e
))
540 CONFerr(CONF_F_STR_COPY
, CONF_R_NO_CLOSE_BRACE
);
546 * So at this point we have
547 * np which is the start of the name string which is
549 * cp which is the start of the section string which is
551 * e is the 'next point after'.
552 * r and rr are the chars replaced by the '\0'
553 * rp and rrp is where 'r' and 'rr' came from.
555 p
= _CONF_get_string(conf
, cp
, np
);
560 CONFerr(CONF_F_STR_COPY
, CONF_R_VARIABLE_HAS_NO_VALUE
);
563 if (!BUF_MEM_grow_clean(buf
,
564 (strlen(p
) + buf
->length
- (e
- from
)))) {
565 CONFerr(CONF_F_STR_COPY
, ERR_R_MALLOC_FAILURE
);
569 buf
->data
[to
++] = *(p
++);
572 * Since we change the pointer 'from', we also have to change the
573 * perceived length of the string it points at. /RL
579 * In case there were no braces or parenthesis around the
580 * variable reference, we have to put back the character that was
581 * replaced with a '\0'. /RL
585 buf
->data
[to
++] = *(from
++);
587 buf
->data
[to
] = '\0';
597 static char *eat_ws(CONF
*conf
, char *p
)
599 while (IS_WS(conf
, *p
) && (!IS_EOF(conf
, *p
)))
604 static char *eat_alpha_numeric(CONF
*conf
, char *p
)
607 if (IS_ESC(conf
, *p
)) {
608 p
= scan_esc(conf
, p
);
611 if (!IS_ALPHA_NUMERIC_PUNCT(conf
, *p
))
617 static char *scan_quote(CONF
*conf
, char *p
)
622 while (!(IS_EOF(conf
, *p
)) && (*p
!= q
)) {
623 if (IS_ESC(conf
, *p
)) {
625 if (IS_EOF(conf
, *p
))
635 static char *scan_dquote(CONF
*conf
, char *p
)
640 while (!(IS_EOF(conf
, *p
))) {
655 static void dump_value_doall_arg(CONF_VALUE
*a
, BIO
*out
)
658 BIO_printf(out
, "[%s] %s=%s\n", a
->section
, a
->name
, a
->value
);
660 BIO_printf(out
, "[[%s]]\n", a
->section
);
663 static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value
, CONF_VALUE
, BIO
)
665 static int def_dump(const CONF
*conf
, BIO
*out
)
667 lh_CONF_VALUE_doall_arg(conf
->data
, LHASH_DOALL_ARG_FN(dump_value
),
672 static int def_is_number(const CONF
*conf
, char c
)
674 return IS_NUMBER(conf
, c
);
677 static int def_to_int(const CONF
*conf
, char c
)