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.]
62 #include <openssl/stack.h>
63 #include <openssl/lhash.h>
64 #include <openssl/conf.h>
65 #include <openssl/buffer.h>
66 #include <openssl/err.h>
70 static void value_free_hash(CONF_VALUE
*a
, LHASH
*conf
);
71 static void value_free_stack(CONF_VALUE
*a
,LHASH
*conf
);
72 static unsigned long hash(CONF_VALUE
*v
);
73 static int cmp_conf(CONF_VALUE
*a
,CONF_VALUE
*b
);
74 static char *eat_ws(char *p
);
75 static char *eat_alpha_numeric(char *p
);
76 static void clear_comments(char *p
);
77 static int str_copy(LHASH
*conf
,char *section
,char **to
, char *from
);
78 static char *scan_quote(char *p
);
79 static CONF_VALUE
*new_section(LHASH
*conf
,char *section
);
80 static CONF_VALUE
*get_section(LHASH
*conf
,char *section
);
81 #define scan_esc(p) ((((p)[1] == '\0')?(p++):(p+=2)),p)
83 const char *CONF_version
="CONF" OPENSSL_VERSION_PTEXT
;
86 LHASH
*CONF_load(LHASH
*h
, const char *file
, long *line
)
92 in
=BIO_new_file(file
, "r");
94 in
=BIO_new_file(file
, "rb");
98 CONFerr(CONF_F_CONF_LOAD
,ERR_R_SYS_LIB
);
102 ltmp
= CONF_load_bio(h
, in
, line
);
108 LHASH
*CONF_load_fp(LHASH
*h
, FILE *in
, long *line
)
112 if(!(btmp
= BIO_new_fp(in
, BIO_NOCLOSE
))) {
113 CONFerr(CONF_F_CONF_LOAD_FP
,ERR_R_BUF_LIB
);
116 ltmp
= CONF_load_bio(h
, btmp
, line
);
122 LHASH
*CONF_load_bio(LHASH
*h
, BIO
*in
, long *line
)
132 CONF_VALUE
*v
=NULL
,*vv
,*tv
;
134 char *section
=NULL
,*buf
;
135 STACK_OF(CONF_VALUE
) *section_sk
=NULL
,*ts
;
136 char *start
,*psection
,*pname
;
138 if ((buff
=BUF_MEM_new()) == NULL
)
140 CONFerr(CONF_F_CONF_LOAD_BIO
,ERR_R_BUF_LIB
);
144 section
=(char *)Malloc(10);
147 CONFerr(CONF_F_CONF_LOAD_BIO
,ERR_R_MALLOC_FAILURE
);
150 strcpy(section
,"default");
154 if ((ret
=lh_new(hash
,cmp_conf
)) == NULL
)
156 CONFerr(CONF_F_CONF_LOAD_BIO
,ERR_R_MALLOC_FAILURE
);
163 sv
=new_section(ret
,section
);
166 CONFerr(CONF_F_CONF_LOAD_BIO
,
167 CONF_R_UNABLE_TO_CREATE_NEW_SECTION
);
170 section_sk
=(STACK_OF(CONF_VALUE
) *)sv
->value
;
176 if (!BUF_MEM_grow(buff
,bufnum
+BUFSIZE
))
178 CONFerr(CONF_F_CONF_LOAD_BIO
,ERR_R_BUF_LIB
);
181 p
= &(buff
->data
[bufnum
]);
183 BIO_gets(in
, p
, BUFSIZE
-1);
189 if ((p
[i
-1] != '\r') && (p
[i
-1] != '\n'))
194 /* we removed some trailing stuff so there is a new
195 * line on the end. */
197 again
=1; /* long line */
201 eline
++; /* another input line */
204 /* we now have a line with trailing \r\n removed */
206 /* i is the number of bytes */
210 /* check for line continuation */
213 /* If we have bytes and the last char '\\' and
214 * second last char is not '\\' */
215 p
= &(buff
->data
[bufnum
-1]);
217 ((bufnum
<= 1) || !IS_ESC(p
[-1])))
230 if (IS_EOF(*s
)) continue; /* blank line */
239 end
=eat_alpha_numeric(ss
);
248 CONFerr(CONF_F_CONF_LOAD_BIO
,
249 CONF_R_MISSING_CLOSE_SQUARE_BRACKET
);
253 if (!str_copy(ret
,NULL
,§ion
,start
)) goto err
;
254 if ((sv
=get_section(ret
,section
)) == NULL
)
255 sv
=new_section(ret
,section
);
258 CONFerr(CONF_F_CONF_LOAD_BIO
,
259 CONF_R_UNABLE_TO_CREATE_NEW_SECTION
);
262 section_sk
=(STACK_OF(CONF_VALUE
) *)sv
->value
;
269 end
=eat_alpha_numeric(s
);
270 if ((end
[0] == ':') && (end
[1] == ':'))
276 end
=eat_alpha_numeric(end
);
281 CONFerr(CONF_F_CONF_LOAD_BIO
,
282 CONF_R_MISSING_EQUAL_SIGN
);
291 while ((p
!= start
) && (IS_WS(*p
)))
296 if (!(v
=(CONF_VALUE
*)Malloc(sizeof(CONF_VALUE
))))
298 CONFerr(CONF_F_CONF_LOAD_BIO
,
299 ERR_R_MALLOC_FAILURE
);
302 if (psection
== NULL
) psection
=section
;
303 v
->name
=(char *)Malloc(strlen(pname
)+1);
307 CONFerr(CONF_F_CONF_LOAD_BIO
,
308 ERR_R_MALLOC_FAILURE
);
311 strcpy(v
->name
,pname
);
312 if (!str_copy(ret
,psection
,&(v
->value
),start
)) goto err
;
314 if (strcmp(psection
,section
) != 0)
316 if ((tv
=get_section(ret
,psection
))
318 tv
=new_section(ret
,psection
);
321 CONFerr(CONF_F_CONF_LOAD_BIO
,
322 CONF_R_UNABLE_TO_CREATE_NEW_SECTION
);
325 ts
=(STACK_OF(CONF_VALUE
) *)tv
->value
;
332 v
->section
=tv
->section
;
333 if (!sk_CONF_VALUE_push(ts
,v
))
335 CONFerr(CONF_F_CONF_LOAD_BIO
,
336 ERR_R_MALLOC_FAILURE
);
339 vv
=(CONF_VALUE
*)lh_insert(ret
,(char *)v
);
342 sk_CONF_VALUE_delete_ptr(ts
,vv
);
350 if (buff
!= NULL
) BUF_MEM_free(buff
);
351 if (section
!= NULL
) Free(section
);
354 if (buff
!= NULL
) BUF_MEM_free(buff
);
355 if (section
!= NULL
) Free(section
);
356 if (line
!= NULL
) *line
=eline
;
357 sprintf(btmp
,"%ld",eline
);
358 ERR_add_error_data(2,"line ",btmp
);
359 if ((h
!= ret
) && (ret
!= NULL
)) CONF_free(ret
);
362 if (v
->name
!= NULL
) Free(v
->name
);
363 if (v
->value
!= NULL
) Free(v
->value
);
364 if (v
!= NULL
) Free(v
);
369 char *CONF_get_string(LHASH
*conf
, char *section
, char *name
)
374 if (name
== NULL
) return(NULL
);
381 v
=(CONF_VALUE
*)lh_retrieve(conf
,(char *)&vv
);
382 if (v
!= NULL
) return(v
->value
);
383 if (strcmp(section
,"ENV") == 0)
386 if (p
!= NULL
) return(p
);
389 vv
.section
="default";
391 v
=(CONF_VALUE
*)lh_retrieve(conf
,(char *)&vv
);
398 return(Getenv(name
));
401 static CONF_VALUE
*get_section(LHASH
*conf
, char *section
)
405 if ((conf
== NULL
) || (section
== NULL
)) return(NULL
);
408 v
=(CONF_VALUE
*)lh_retrieve(conf
,(char *)&vv
);
412 STACK_OF(CONF_VALUE
) *CONF_get_section(LHASH
*conf
, char *section
)
416 v
=get_section(conf
,section
);
418 return((STACK_OF(CONF_VALUE
) *)v
->value
);
423 long CONF_get_number(LHASH
*conf
, char *section
, char *name
)
428 str
=CONF_get_string(conf
,section
,name
);
429 if (str
== NULL
) return(0);
433 ret
=ret
*10+(*str
-'0');
440 void CONF_free(LHASH
*conf
)
442 if (conf
== NULL
) return;
444 conf
->down_load
=0; /* evil thing to make sure the 'Free()'
445 * works as expected */
446 lh_doall_arg(conf
,(void (*)())value_free_hash
,(char *)conf
);
448 /* We now have only 'section' entries in the hash table.
449 * Due to problems with */
451 lh_doall_arg(conf
,(void (*)())value_free_stack
,(char *)conf
);
455 static void value_free_hash(CONF_VALUE
*a
, LHASH
*conf
)
459 a
=(CONF_VALUE
*)lh_delete(conf
,(char *)a
);
463 static void value_free_stack(CONF_VALUE
*a
, LHASH
*conf
)
469 if (a
->name
!= NULL
) return;
471 sk
=(STACK
*)a
->value
;
472 for (i
=sk_num(sk
)-1; i
>=0; i
--)
474 vv
=(CONF_VALUE
*)sk_value(sk
,i
);
479 if (sk
!= NULL
) sk_free(sk
);
484 static void clear_comments(char *p
)
513 static int str_copy(LHASH
*conf
, char *section
, char **pto
, char *from
)
515 int q
,r
,rr
=0,to
=0,len
=0;
516 char *s
,*e
,*rp
,*p
,*rrp
,*np
,*cp
,v
;
519 if ((buf
=BUF_MEM_new()) == NULL
) return(0);
522 if (!BUF_MEM_grow(buf
,len
)) goto err
;
530 while ((*from
!= '\0') && (*from
!= q
))
535 if (*from
== '\0') break;
537 buf
->data
[to
++]= *(from
++);
540 else if (*from
== '\\')
544 if (v
== '\0') break;
545 else if (v
== 'r') v
='\r';
546 else if (v
== 'n') v
='\n';
547 else if (v
== 'b') v
='\b';
548 else if (v
== 't') v
='\t';
551 else if (*from
== '\0')
553 else if (*from
== '$')
555 /* try to expand it */
567 while (IS_ALPHA_NUMERIC(*e
))
569 if ((e
[0] == ':') && (e
[1] == ':'))
577 while (IS_ALPHA_NUMERIC(*e
))
587 CONFerr(CONF_F_STR_COPY
,CONF_R_NO_CLOSE_BRACE
);
592 /* So at this point we have
593 * ns which is the start of the name string which is
595 * cs which is the start of the section string which is
597 * e is the 'next point after'.
598 * r and s are the chars replaced by the '\0'
599 * rp and sp is where 'r' and 's' came from.
601 p
=CONF_get_string(conf
,cp
,np
);
602 if (rrp
!= NULL
) *rrp
=rr
;
606 CONFerr(CONF_F_STR_COPY
,CONF_R_VARIABLE_HAS_NO_VALUE
);
609 BUF_MEM_grow(buf
,(strlen(p
)+len
-(e
-from
)));
611 buf
->data
[to
++]= *(p
++);
615 buf
->data
[to
++]= *(from
++);
618 if (*pto
!= NULL
) Free(*pto
);
623 if (buf
!= NULL
) BUF_MEM_free(buf
);
627 static char *eat_ws(char *p
)
629 while (IS_WS(*p
) && (!IS_EOF(*p
)))
634 static char *eat_alpha_numeric(char *p
)
643 if (!IS_ALPHA_NUMERIC_PUNCT(*p
))
649 static unsigned long hash(CONF_VALUE
*v
)
651 return((lh_strhash(v
->section
)<<2)^lh_strhash(v
->name
));
654 static int cmp_conf(CONF_VALUE
*a
, CONF_VALUE
*b
)
658 if (a
->section
!= b
->section
)
660 i
=strcmp(a
->section
,b
->section
);
664 if ((a
->name
!= NULL
) && (b
->name
!= NULL
))
666 i
=strcmp(a
->name
,b
->name
);
669 else if (a
->name
== b
->name
)
672 return((a
->name
== NULL
)?-1:1);
675 static char *scan_quote(char *p
)
680 while (!(IS_EOF(*p
)) && (*p
!= q
))
685 if (IS_EOF(*p
)) return(p
);
693 static CONF_VALUE
*new_section(LHASH
*conf
, char *section
)
697 CONF_VALUE
*v
=NULL
,*vv
;
699 if ((sk
=sk_new_null()) == NULL
)
701 if ((v
=(CONF_VALUE
*)Malloc(sizeof(CONF_VALUE
))) == NULL
)
704 if ((v
->section
=(char *)Malloc(i
)) == NULL
)
707 memcpy(v
->section
,section
,i
);
711 vv
=(CONF_VALUE
*)lh_insert(conf
,(char *)v
);
714 #if !defined(NO_STDIO) && !defined(WIN16)
715 fprintf(stderr
,"internal fault\n");
723 if (sk
!= NULL
) sk_free(sk
);
724 if (v
!= NULL
) Free(v
);
730 IMPLEMENT_STACK_OF(CONF_VALUE
)