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openssl/crypto/conf/conf_def.c
Ben Laurie c8bbd98a2b Fix warnings.
2010-06-12 14:13:23 +00:00

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/* crypto/conf/conf.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* Part of the code in here was originally in conf.c, which is now removed */
#include <stdio.h>
#include <string.h>
#include "cryptlib.h"
#include <openssl/stack.h>
#include <openssl/lhash.h>
#include <openssl/conf.h>
#include <openssl/conf_api.h>
#include "conf_def.h"
#include <openssl/buffer.h>
#include <openssl/err.h>
static char *eat_ws(CONF *conf, char *p);
static char *eat_alpha_numeric(CONF *conf, char *p);
static void clear_comments(CONF *conf, char *p);
static int str_copy(CONF *conf,char *section,char **to, char *from);
static char *scan_quote(CONF *conf, char *p);
static char *scan_dquote(CONF *conf, char *p);
#define scan_esc(conf,p) (((IS_EOF((conf),(p)[1]))?((p)+1):((p)+2)))
static CONF *def_create(CONF_METHOD *meth);
static int def_init_default(CONF *conf);
static int def_init_WIN32(CONF *conf);
static int def_destroy(CONF *conf);
static int def_destroy_data(CONF *conf);
static int def_load(CONF *conf, const char *name, long *eline);
static int def_load_bio(CONF *conf, BIO *bp, long *eline);
static int def_dump(const CONF *conf, BIO *bp);
static int def_is_number(const CONF *conf, char c);
static int def_to_int(const CONF *conf, char c);
const char CONF_def_version[]="CONF_def" OPENSSL_VERSION_PTEXT;
static CONF_METHOD default_method = {
"OpenSSL default",
def_create,
def_init_default,
def_destroy,
def_destroy_data,
def_load_bio,
def_dump,
def_is_number,
def_to_int,
def_load
};
static CONF_METHOD WIN32_method = {
"WIN32",
def_create,
def_init_WIN32,
def_destroy,
def_destroy_data,
def_load_bio,
def_dump,
def_is_number,
def_to_int,
def_load
};
CONF_METHOD *NCONF_default()
{
return &default_method;
}
CONF_METHOD *NCONF_WIN32()
{
return &WIN32_method;
}
static CONF *def_create(CONF_METHOD *meth)
{
CONF *ret;
ret = OPENSSL_malloc(sizeof(CONF) + sizeof(unsigned short *));
if (ret)
if (meth->init(ret) == 0)
{
OPENSSL_free(ret);
ret = NULL;
}
return ret;
}
static int def_init_default(CONF *conf)
{
if (conf == NULL)
return 0;
conf->meth = &default_method;
conf->meth_data = CONF_type_default;
conf->data = NULL;
return 1;
}
static int def_init_WIN32(CONF *conf)
{
if (conf == NULL)
return 0;
conf->meth = &WIN32_method;
conf->meth_data = (void *)CONF_type_win32;
conf->data = NULL;
return 1;
}
static int def_destroy(CONF *conf)
{
if (def_destroy_data(conf))
{
OPENSSL_free(conf);
return 1;
}
return 0;
}
static int def_destroy_data(CONF *conf)
{
if (conf == NULL)
return 0;
_CONF_free_data(conf);
return 1;
}
static int def_load(CONF *conf, const char *name, long *line)
{
int ret;
BIO *in=NULL;
#ifdef OPENSSL_SYS_VMS
in=BIO_new_file(name, "r");
#else
in=BIO_new_file(name, "rb");
#endif
if (in == NULL)
{
if (ERR_GET_REASON(ERR_peek_last_error()) == BIO_R_NO_SUCH_FILE)
CONFerr(CONF_F_DEF_LOAD,CONF_R_NO_SUCH_FILE);
else
CONFerr(CONF_F_DEF_LOAD,ERR_R_SYS_LIB);
return 0;
}
ret = def_load_bio(conf, in, line);
BIO_free(in);
return ret;
}
static int def_load_bio(CONF *conf, BIO *in, long *line)
{
/* The macro BUFSIZE conflicts with a system macro in VxWorks */
#define CONFBUFSIZE 512
int bufnum=0,i,ii;
BUF_MEM *buff=NULL;
char *s,*p,*end;
int again;
long eline=0;
char btmp[DECIMAL_SIZE(eline)+1];
CONF_VALUE *v=NULL,*tv;
CONF_VALUE *sv=NULL;
char *section=NULL,*buf;
char *start,*psection,*pname;
void *h = (void *)(conf->data);
if ((buff=BUF_MEM_new()) == NULL)
{
CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_BUF_LIB);
goto err;
}
section=(char *)OPENSSL_malloc(10);
if (section == NULL)
{
CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_MALLOC_FAILURE);
goto err;
}
BUF_strlcpy(section,"default",10);
if (_CONF_new_data(conf) == 0)
{
CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_MALLOC_FAILURE);
goto err;
}
sv=_CONF_new_section(conf,section);
if (sv == NULL)
{
CONFerr(CONF_F_DEF_LOAD_BIO,
CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
goto err;
}
bufnum=0;
again=0;
for (;;)
{
if (!BUF_MEM_grow(buff,bufnum+CONFBUFSIZE))
{
CONFerr(CONF_F_DEF_LOAD_BIO,ERR_R_BUF_LIB);
goto err;
}
p= &(buff->data[bufnum]);
*p='\0';
BIO_gets(in, p, CONFBUFSIZE-1);
p[CONFBUFSIZE-1]='\0';
ii=i=strlen(p);
if (i == 0 && !again) break;
again=0;
while (i > 0)
{
if ((p[i-1] != '\r') && (p[i-1] != '\n'))
break;
else
i--;
}
/* we removed some trailing stuff so there is a new
* line on the end. */
if (ii && i == ii)
again=1; /* long line */
else
{
p[i]='\0';
eline++; /* another input line */
}
/* we now have a line with trailing \r\n removed */
/* i is the number of bytes */
bufnum+=i;
v=NULL;
/* check for line continuation */
if (bufnum >= 1)
{
/* If we have bytes and the last char '\\' and
* second last char is not '\\' */
p= &(buff->data[bufnum-1]);
if (IS_ESC(conf,p[0]) &&
((bufnum <= 1) || !IS_ESC(conf,p[-1])))
{
bufnum--;
again=1;
}
}
if (again) continue;
bufnum=0;
buf=buff->data;
clear_comments(conf, buf);
s=eat_ws(conf, buf);
if (IS_EOF(conf,*s)) continue; /* blank line */
if (*s == '[')
{
char *ss;
s++;
start=eat_ws(conf, s);
ss=start;
again:
end=eat_alpha_numeric(conf, ss);
p=eat_ws(conf, end);
if (*p != ']')
{
if (*p != '\0')
{
ss=p;
goto again;
}
CONFerr(CONF_F_DEF_LOAD_BIO,
CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
goto err;
}
*end='\0';
if (!str_copy(conf,NULL,&section,start)) goto err;
if ((sv=_CONF_get_section(conf,section)) == NULL)
sv=_CONF_new_section(conf,section);
if (sv == NULL)
{
CONFerr(CONF_F_DEF_LOAD_BIO,
CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
goto err;
}
continue;
}
else
{
pname=s;
psection=NULL;
end=eat_alpha_numeric(conf, s);
if ((end[0] == ':') && (end[1] == ':'))
{
*end='\0';
end+=2;
psection=pname;
pname=end;
end=eat_alpha_numeric(conf, end);
}
p=eat_ws(conf, end);
if (*p != '=')
{
CONFerr(CONF_F_DEF_LOAD_BIO,
CONF_R_MISSING_EQUAL_SIGN);
goto err;
}
*end='\0';
p++;
start=eat_ws(conf, p);
while (!IS_EOF(conf,*p))
p++;
p--;
while ((p != start) && (IS_WS(conf,*p)))
p--;
p++;
*p='\0';
if (!(v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))))
{
CONFerr(CONF_F_DEF_LOAD_BIO,
ERR_R_MALLOC_FAILURE);
goto err;
}
if (psection == NULL) psection=section;
v->name=(char *)OPENSSL_malloc(strlen(pname)+1);
v->value=NULL;
if (v->name == NULL)
{
CONFerr(CONF_F_DEF_LOAD_BIO,
ERR_R_MALLOC_FAILURE);
goto err;
}
BUF_strlcpy(v->name,pname,strlen(pname)+1);
if (!str_copy(conf,psection,&(v->value),start)) goto err;
if (strcmp(psection,section) != 0)
{
if ((tv=_CONF_get_section(conf,psection))
== NULL)
tv=_CONF_new_section(conf,psection);
if (tv == NULL)
{
CONFerr(CONF_F_DEF_LOAD_BIO,
CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
goto err;
}
}
else
tv=sv;
#if 1
if (_CONF_add_string(conf, tv, v) == 0)
{
CONFerr(CONF_F_DEF_LOAD_BIO,
ERR_R_MALLOC_FAILURE);
goto err;
}
#else
v->section=tv->section;
if (!sk_CONF_VALUE_push(ts,v))
{
CONFerr(CONF_F_DEF_LOAD_BIO,
ERR_R_MALLOC_FAILURE);
goto err;
}
vv=(CONF_VALUE *)lh_insert(conf->data,v);
if (vv != NULL)
{
sk_CONF_VALUE_delete_ptr(ts,vv);
OPENSSL_free(vv->name);
OPENSSL_free(vv->value);
OPENSSL_free(vv);
}
#endif
v=NULL;
}
}
if (buff != NULL) BUF_MEM_free(buff);
if (section != NULL) OPENSSL_free(section);
return(1);
err:
if (buff != NULL) BUF_MEM_free(buff);
if (section != NULL) OPENSSL_free(section);
if (line != NULL) *line=eline;
BIO_snprintf(btmp,sizeof btmp,"%ld",eline);
ERR_add_error_data(2,"line ",btmp);
if ((h != conf->data) && (conf->data != NULL))
{
CONF_free(conf->data);
conf->data=NULL;
}
if (v != NULL)
{
if (v->name != NULL) OPENSSL_free(v->name);
if (v->value != NULL) OPENSSL_free(v->value);
if (v != NULL) OPENSSL_free(v);
}
return(0);
}
static void clear_comments(CONF *conf, char *p)
{
for (;;)
{
if (IS_FCOMMENT(conf,*p))
{
*p='\0';
return;
}
if (!IS_WS(conf,*p))
{
break;
}
p++;
}
for (;;)
{
if (IS_COMMENT(conf,*p))
{
*p='\0';
return;
}
if (IS_DQUOTE(conf,*p))
{
p=scan_dquote(conf, p);
continue;
}
if (IS_QUOTE(conf,*p))
{
p=scan_quote(conf, p);
continue;
}
if (IS_ESC(conf,*p))
{
p=scan_esc(conf,p);
continue;
}
if (IS_EOF(conf,*p))
return;
else
p++;
}
}
static int str_copy(CONF *conf, char *section, char **pto, char *from)
{
int q,r,rr=0,to=0,len=0;
char *s,*e,*rp,*p,*rrp,*np,*cp,v;
BUF_MEM *buf;
if ((buf=BUF_MEM_new()) == NULL) return(0);
len=strlen(from)+1;
if (!BUF_MEM_grow(buf,len)) goto err;
for (;;)
{
if (IS_QUOTE(conf,*from))
{
q= *from;
from++;
while (!IS_EOF(conf,*from) && (*from != q))
{
if (IS_ESC(conf,*from))
{
from++;
if (IS_EOF(conf,*from)) break;
}
buf->data[to++]= *(from++);
}
if (*from == q) from++;
}
else if (IS_DQUOTE(conf,*from))
{
q= *from;
from++;
while (!IS_EOF(conf,*from))
{
if (*from == q)
{
if (*(from+1) == q)
{
from++;
}
else
{
break;
}
}
buf->data[to++]= *(from++);
}
if (*from == q) from++;
}
else if (IS_ESC(conf,*from))
{
from++;
v= *(from++);
if (IS_EOF(conf,v)) break;
else if (v == 'r') v='\r';
else if (v == 'n') v='\n';
else if (v == 'b') v='\b';
else if (v == 't') v='\t';
buf->data[to++]= v;
}
else if (IS_EOF(conf,*from))
break;
else if (*from == '$')
{
/* try to expand it */
rrp=NULL;
s= &(from[1]);
if (*s == '{')
q='}';
else if (*s == '(')
q=')';
else q=0;
if (q) s++;
cp=section;
e=np=s;
while (IS_ALPHA_NUMERIC(conf,*e))
e++;
if ((e[0] == ':') && (e[1] == ':'))
{
cp=np;
rrp=e;
rr= *e;
*rrp='\0';
e+=2;
np=e;
while (IS_ALPHA_NUMERIC(conf,*e))
e++;
}
r= *e;
*e='\0';
rp=e;
if (q)
{
if (r != q)
{
CONFerr(CONF_F_STR_COPY,CONF_R_NO_CLOSE_BRACE);
goto err;
}
e++;
}
/* So at this point we have
* np which is the start of the name string which is
* '\0' terminated.
* cp which is the start of the section string which is
* '\0' terminated.
* e is the 'next point after'.
* r and rr are the chars replaced by the '\0'
* rp and rrp is where 'r' and 'rr' came from.
*/
p=_CONF_get_string(conf,cp,np);
if (rrp != NULL) *rrp=rr;
*rp=r;
if (p == NULL)
{
CONFerr(CONF_F_STR_COPY,CONF_R_VARIABLE_HAS_NO_VALUE);
goto err;
}
BUF_MEM_grow_clean(buf,(strlen(p)+buf->length-(e-from)));
while (*p)
buf->data[to++]= *(p++);
/* Since we change the pointer 'from', we also have
to change the perceived length of the string it
points at. /RL */
len -= e-from;
from=e;
/* In case there were no braces or parenthesis around
the variable reference, we have to put back the
character that was replaced with a '\0'. /RL */
*rp = r;
}
else
buf->data[to++]= *(from++);
}
buf->data[to]='\0';
if (*pto != NULL) OPENSSL_free(*pto);
*pto=buf->data;
OPENSSL_free(buf);
return(1);
err:
if (buf != NULL) BUF_MEM_free(buf);
return(0);
}
static char *eat_ws(CONF *conf, char *p)
{
while (IS_WS(conf,*p) && (!IS_EOF(conf,*p)))
p++;
return(p);
}
static char *eat_alpha_numeric(CONF *conf, char *p)
{
for (;;)
{
if (IS_ESC(conf,*p))
{
p=scan_esc(conf,p);
continue;
}
if (!IS_ALPHA_NUMERIC_PUNCT(conf,*p))
return(p);
p++;
}
}
static char *scan_quote(CONF *conf, char *p)
{
int q= *p;
p++;
while (!(IS_EOF(conf,*p)) && (*p != q))
{
if (IS_ESC(conf,*p))
{
p++;
if (IS_EOF(conf,*p)) return(p);
}
p++;
}
if (*p == q) p++;
return(p);
}
static char *scan_dquote(CONF *conf, char *p)
{
int q= *p;
p++;
while (!(IS_EOF(conf,*p)))
{
if (*p == q)
{
if (*(p+1) == q)
{
p++;
}
else
{
break;
}
}
p++;
}
if (*p == q) p++;
return(p);
}
static void dump_value_doall_arg(CONF_VALUE *a, BIO *out)
{
if (a->name)
BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
else
BIO_printf(out, "[[%s]]\n", a->section);
}
static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE, BIO)
static int def_dump(const CONF *conf, BIO *out)
{
lh_CONF_VALUE_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value),
BIO, out);
return 1;
}
static int def_is_number(const CONF *conf, char c)
{
return IS_NUMBER(conf,c);
}
static int def_to_int(const CONF *conf, char c)
{
return c - '0';
}
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