conf_def.c
上传用户:yisoukefu
上传日期:2020-08-09
资源大小:39506k
文件大小:16k
- /* 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 = (CONF *)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 = (void *)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,n;
- long eline=0;
- char btmp[DECIMAL_SIZE(eline)+1];
- CONF_VALUE *v=NULL,*tv;
- CONF_VALUE *sv=NULL;
- char *section=NULL,*buf;
- STACK_OF(CONF_VALUE) *section_sk=NULL,*ts;
- 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;
- }
- section_sk=(STACK_OF(CONF_VALUE) *)sv->value;
- 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=' ';
- BIO_gets(in, p, CONFBUFSIZE-1);
- p[CONFBUFSIZE-1]=' ';
- 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]=' ';
- eline++; /* another input line */
- }
- /* we now have a line with trailing rn 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);
- n=strlen(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 != ' ')
- {
- ss=p;
- goto again;
- }
- CONFerr(CONF_F_DEF_LOAD_BIO,
- CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
- goto err;
- }
- *end=' ';
- if (!str_copy(conf,NULL,§ion,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;
- }
- section_sk=(STACK_OF(CONF_VALUE) *)sv->value;
- continue;
- }
- else
- {
- pname=s;
- psection=NULL;
- end=eat_alpha_numeric(conf, s);
- if ((end[0] == ':') && (end[1] == ':'))
- {
- *end=' ';
- 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=' ';
- p++;
- start=eat_ws(conf, p);
- while (!IS_EOF(conf,*p))
- p++;
- p--;
- while ((p != start) && (IS_WS(conf,*p)))
- p--;
- p++;
- *p=' ';
- 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;
- }
- ts=(STACK_OF(CONF_VALUE) *)tv->value;
- }
- else
- {
- tv=sv;
- ts=section_sk;
- }
- #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)
- {
- char *to;
- to=p;
- for (;;)
- {
- if (IS_FCOMMENT(conf,*p))
- {
- *p=' ';
- return;
- }
- if (!IS_WS(conf,*p))
- {
- break;
- }
- p++;
- }
- for (;;)
- {
- if (IS_COMMENT(conf,*p))
- {
- *p=' ';
- 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=' ';
- e+=2;
- np=e;
- while (IS_ALPHA_NUMERIC(conf,*e))
- e++;
- }
- r= *e;
- *e=' ';
- 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
- * ' ' terminated.
- * cp which is the start of the section string which is
- * ' ' terminated.
- * e is the 'next point after'.
- * r and rr are the chars replaced by the ' '
- * 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 ' '. /RL */
- *rp = r;
- }
- else
- buf->data[to++]= *(from++);
- }
- buf->data[to]=' ';
- 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(CONF_VALUE *a, BIO *out)
- {
- if (a->name)
- BIO_printf(out, "[%s] %s=%sn", 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_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value), 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';
- }