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;
123 CONF_METHOD *NCONF_WIN32()
125 return &WIN32_method;
128 static CONF *def_create(CONF_METHOD *meth)
132 ret = OPENSSL_malloc(sizeof(CONF) + sizeof(unsigned short *));
134 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))
176 static int def_destroy_data(CONF *conf)
180 _CONF_free_data(conf);
184 static int def_load(CONF *conf, const char *name, long *line)
189 #ifdef OPENSSL_SYS_VMS
190 in=BIO_new_file(name, "r");
192 in=BIO_new_file(name, "rb");
196 if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
197 CONFerr(CONF_F_DEF_LOAD,CONF_R_NO_SUCH_FILE);
199 CONFerr(CONF_F_DEF_LOAD,ERR_R_SYS_LIB);
203 ret = def_load_bio(conf, in, line);
209 static int def_load_bio(CONF *conf, BIO *in, long *line)
211 /* The macro BUFSIZE conflicts with a system macro in VxWorks */
212 #define CONFBUFSIZE 512
218 char btmp[DECIMAL_SIZE(eline)+1];
219 CONF_VALUE *v=NULL,*tv;
221 char *section=NULL,*buf;
222 char *start,*psection,*pname;
223 void *h = (void *)(conf->data);
225 if ((buff=BUF_MEM_new()) == NULL)
227 CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_BUF_LIB);
231 section=(char *)OPENSSL_malloc(10);
234 CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_MALLOC_FAILURE);
237 BUF_strlcpy(section,"default",10);
239 if (_CONF_new_data(conf) == 0)
241 CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_MALLOC_FAILURE);
245 sv=_CONF_new_section(conf,section);
248 CONFerr(CONF_F_DEF_LOAD_BIO,
249 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
257 if (!BUF_MEM_grow(buff,bufnum+CONFBUFSIZE))
259 CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_BUF_LIB);
262 p= &(buff->data[bufnum]);
264 BIO_gets(in, p, CONFBUFSIZE-1);
265 p[CONFBUFSIZE-1]='\0';
267 if (i == 0 && !again) break;
271 if ((p[i-1] != '\r') && (p[i-1] != '\n'))
276 /* we removed some trailing stuff so there is a new
277 * line on the end. */
279 again=1; /* long line */
283 eline++; /* another input line */
286 /* we now have a line with trailing \r\n removed */
288 /* i is the number of bytes */
292 /* check for line continuation */
295 /* If we have bytes and the last char '\\' and
296 * second last char is not '\\' */
297 p= &(buff->data[bufnum-1]);
298 if (IS_ESC(conf,p[0]) &&
299 ((bufnum <= 1) || !IS_ESC(conf,p[-1])))
309 clear_comments(conf, buf);
311 if (IS_EOF(conf,*s)) continue; /* blank line */
317 start=eat_ws(conf, s);
320 end=eat_alpha_numeric(conf, ss);
329 CONFerr(CONF_F_DEF_LOAD_BIO,
330 CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
334 if (!str_copy(conf,NULL,§ion,start)) goto err;
335 if ((sv=_CONF_get_section(conf,section)) == NULL)
336 sv=_CONF_new_section(conf,section);
339 CONFerr(CONF_F_DEF_LOAD_BIO,
340 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
349 end=eat_alpha_numeric(conf, s);
350 if ((end[0] == ':') && (end[1] == ':'))
356 end=eat_alpha_numeric(conf, end);
361 CONFerr(CONF_F_DEF_LOAD_BIO,
362 CONF_R_MISSING_EQUAL_SIGN);
367 start=eat_ws(conf, p);
368 while (!IS_EOF(conf,*p))
371 while ((p != start) && (IS_WS(conf,*p)))
376 if (!(v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))))
378 CONFerr(CONF_F_DEF_LOAD_BIO,
379 ERR_R_MALLOC_FAILURE);
382 if (psection == NULL) psection=section;
383 v->name=(char *)OPENSSL_malloc(strlen(pname)+1);
387 CONFerr(CONF_F_DEF_LOAD_BIO,
388 ERR_R_MALLOC_FAILURE);
391 BUF_strlcpy(v->name,pname,strlen(pname)+1);
392 if (!str_copy(conf,psection,&(v->value),start)) goto err;
394 if (strcmp(psection,section) != 0)
396 if ((tv=_CONF_get_section(conf,psection))
398 tv=_CONF_new_section(conf,psection);
401 CONFerr(CONF_F_DEF_LOAD_BIO,
402 CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
409 if (_CONF_add_string(conf, tv, v) == 0)
411 CONFerr(CONF_F_DEF_LOAD_BIO,
412 ERR_R_MALLOC_FAILURE);
416 v->section=tv->section;
417 if (!sk_CONF_VALUE_push(ts,v))
419 CONFerr(CONF_F_DEF_LOAD_BIO,
420 ERR_R_MALLOC_FAILURE);
423 vv=(CONF_VALUE *)lh_insert(conf->data,v);
426 sk_CONF_VALUE_delete_ptr(ts,vv);
427 OPENSSL_free(vv->name);
428 OPENSSL_free(vv->value);
435 if (buff != NULL) BUF_MEM_free(buff);
436 if (section != NULL) OPENSSL_free(section);
439 if (buff != NULL) BUF_MEM_free(buff);
440 if (section != NULL) OPENSSL_free(section);
441 if (line != NULL) *line=eline;
442 BIO_snprintf(btmp,sizeof btmp,"%ld",eline);
443 ERR_add_error_data(2,"line ",btmp);
444 if ((h != conf->data) && (conf->data != NULL))
446 CONF_free(conf->data);
451 if (v->name != NULL) OPENSSL_free(v->name);
452 if (v->value != NULL) OPENSSL_free(v->value);
453 if (v != NULL) OPENSSL_free(v);
458 static void clear_comments(CONF *conf, char *p)
462 if (IS_FCOMMENT(conf,*p))
476 if (IS_COMMENT(conf,*p))
481 if (IS_DQUOTE(conf,*p))
483 p=scan_dquote(conf, p);
486 if (IS_QUOTE(conf,*p))
488 p=scan_quote(conf, p);
503 static int str_copy(CONF *conf, char *section, char **pto, char *from)
505 int q,r,rr=0,to=0,len=0;
506 char *s,*e,*rp,*p,*rrp,*np,*cp,v;
509 if ((buf=BUF_MEM_new()) == NULL) return(0);
512 if (!BUF_MEM_grow(buf,len)) goto err;
516 if (IS_QUOTE(conf,*from))
520 while (!IS_EOF(conf,*from) && (*from != q))
522 if (IS_ESC(conf,*from))
525 if (IS_EOF(conf,*from)) break;
527 buf->data[to++]= *(from++);
529 if (*from == q) from++;
531 else if (IS_DQUOTE(conf,*from))
535 while (!IS_EOF(conf,*from))
548 buf->data[to++]= *(from++);
550 if (*from == q) from++;
552 else if (IS_ESC(conf,*from))
556 if (IS_EOF(conf,v)) break;
557 else if (v == 'r') v='\r';
558 else if (v == 'n') v='\n';
559 else if (v == 'b') v='\b';
560 else if (v == 't') v='\t';
563 else if (IS_EOF(conf,*from))
565 else if (*from == '$')
567 /* try to expand it */
579 while (IS_ALPHA_NUMERIC(conf,*e))
581 if ((e[0] == ':') && (e[1] == ':'))
589 while (IS_ALPHA_NUMERIC(conf,*e))
599 CONFerr(CONF_F_STR_COPY,CONF_R_NO_CLOSE_BRACE);
604 /* So at this point we have
605 * np which is the start of the name string which is
607 * cp which is the start of the section string which is
609 * e is the 'next point after'.
610 * r and rr are the chars replaced by the '\0'
611 * rp and rrp is where 'r' and 'rr' came from.
613 p=_CONF_get_string(conf,cp,np);
614 if (rrp != NULL) *rrp=rr;
618 CONFerr(CONF_F_STR_COPY,CONF_R_VARIABLE_HAS_NO_VALUE);
621 BUF_MEM_grow_clean(buf,(strlen(p)+buf->length-(e-from)));
623 buf->data[to++]= *(p++);
625 /* Since we change the pointer 'from', we also have
626 to change the perceived length of the string it
631 /* In case there were no braces or parenthesis around
632 the variable reference, we have to put back the
633 character that was replaced with a '\0'. /RL */
637 buf->data[to++]= *(from++);
640 if (*pto != NULL) OPENSSL_free(*pto);
645 if (buf != NULL) BUF_MEM_free(buf);
649 static char *eat_ws(CONF *conf, char *p)
651 while (IS_WS(conf,*p) && (!IS_EOF(conf,*p)))
656 static char *eat_alpha_numeric(CONF *conf, char *p)
665 if (!IS_ALPHA_NUMERIC_PUNCT(conf,*p))
671 static char *scan_quote(CONF *conf, char *p)
676 while (!(IS_EOF(conf,*p)) && (*p != q))
681 if (IS_EOF(conf,*p)) return(p);
690 static char *scan_dquote(CONF *conf, char *p)
695 while (!(IS_EOF(conf,*p)))
714 static void dump_value_doall_arg(CONF_VALUE *a, BIO *out)
717 BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
719 BIO_printf(out, "[[%s]]\n", a->section);
722 static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE, BIO)
724 static int def_dump(const CONF *conf, BIO *out)
726 lh_CONF_VALUE_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value),
731 static int def_is_number(const CONF *conf, char c)
733 return IS_NUMBER(conf,c);
736 static int def_to_int(const CONF *conf, char c)