Import of old SSLeay release: SSLeay 0.8.1b
diff --git a/crypto/conf/conf.c b/crypto/conf/conf.c
new file mode 100644
index 0000000..68243e9
--- /dev/null
+++ b/crypto/conf/conf.c
@@ -0,0 +1,725 @@
+/* crypto/conf/conf.c */
+/* Copyright (C) 1995-1997 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.]
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include "cryptlib.h"
+#include "stack.h"
+#include "lhash.h"
+#include "conf.h"
+#include "buffer.h"
+#include "err.h"
+
+#include "conf_lcl.h"
+
+#ifndef NOPROTO
+static void value_free_hash(CONF_VALUE *a, LHASH *conf);
+static void value_free_stack(CONF_VALUE *a,LHASH *conf);
+static unsigned long hash(CONF_VALUE *v);
+static int cmp(CONF_VALUE *a,CONF_VALUE *b);
+static char *eat_ws(char *p);
+static char *eat_alpha_numeric(char *p);
+static void clear_comments(char *p);
+static int str_copy(LHASH *conf,char *section,char **to, char *from);
+static char *scan_quote(char *p);
+static CONF_VALUE *new_section(LHASH *conf,char *section);
+static CONF_VALUE *get_section(LHASH *conf,char *section);
+#else
+static void value_free_hash();
+static void value_free_stack();
+static unsigned long hash();
+static int cmp();
+static char *eat_ws();
+static char *eat_alpha_numeric();
+static void clear_comments();
+static int str_copy();
+static char *scan_quote();
+static CONF_VALUE *new_section();
+static CONF_VALUE *get_section();
+#endif
+
+#define scan_esc(p) ((*(++p) == '\0')?(p):(++p))
+
+char *CONF_version="CONF part of SSLeay 0.8.1b 29-Jun-1998";
+
+LHASH *CONF_load(h,file,line)
+LHASH *h;
+char *file;
+long *line;
+ {
+ LHASH *ret=NULL;
+ FILE *in=NULL;
+#define BUFSIZE 512
+ int bufnum=0,i,ii;
+ BUF_MEM *buff=NULL;
+ char *s,*p,*end;
+ int again,n,eline=0;
+ CONF_VALUE *v=NULL,*vv,*tv;
+ CONF_VALUE *sv=NULL;
+ char *section=NULL,*buf;
+ STACK *section_sk=NULL,*ts;
+ char *start,*psection,*pname;
+
+ if ((buff=BUF_MEM_new()) == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_BUF_LIB);
+ goto err;
+ }
+
+ in=fopen(file,"rb");
+ if (in == NULL)
+ {
+ SYSerr(SYS_F_FOPEN,errno);
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_SYS_LIB);
+ goto err;
+ }
+
+ section=(char *)Malloc(10);
+ if (section == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ strcpy(section,"default");
+
+ if (h == NULL)
+ {
+ if ((ret=lh_new(hash,cmp)) == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ }
+ else
+ ret=h;
+
+ sv=new_section(ret,section);
+ if (sv == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+ goto err;
+ }
+ section_sk=(STACK *)sv->value;
+
+ bufnum=0;
+ for (;;)
+ {
+ again=0;
+ if (!BUF_MEM_grow(buff,bufnum+BUFSIZE))
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_BUF_LIB);
+ goto err;
+ }
+ p= &(buff->data[bufnum]);
+ *p='\0';
+ fgets(p,BUFSIZE-1,in);
+ p[BUFSIZE-1]='\0';
+ ii=i=strlen(p);
+ if (i == 0) break;
+ 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 (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(p[0]) &&
+ ((bufnum <= 1) || !IS_ESC(p[-1])))
+ {
+ bufnum--;
+ again=1;
+ }
+ }
+ if (again) continue;
+ bufnum=0;
+ buf=buff->data;
+
+ clear_comments(buf);
+ n=strlen(buf);
+ s=eat_ws(buf);
+ if (IS_EOF(*s)) continue; /* blank line */
+ if (*s == '[')
+ {
+ s++;
+ start=eat_ws(s);
+ end=eat_alpha_numeric(start);
+ p=eat_ws(end);
+ if (*p != ']')
+ {
+ CONFerr(CONF_F_CONF_LOAD,CONF_R_MISSING_CLOSE_SQUARE_BRACKET);
+ goto err;
+ }
+ *end='\0';
+ if (!str_copy(ret,NULL,§ion,start)) goto err;
+ if ((sv=get_section(ret,section)) == NULL)
+ sv=new_section(ret,section);
+ if (sv == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+ goto err;
+ }
+ section_sk=(STACK *)sv->value;
+ continue;
+ }
+ else
+ {
+ pname=s;
+ psection=NULL;
+ end=eat_alpha_numeric(s);
+ if ((end[0] == ':') && (end[1] == ':'))
+ {
+ *end='\0';
+ end+=2;
+ psection=pname;
+ pname=end;
+ end=eat_alpha_numeric(end);
+ }
+ p=eat_ws(end);
+ if (*p != '=')
+ {
+ CONFerr(CONF_F_CONF_LOAD,CONF_R_MISSING_EQUAL_SIGN);
+ goto err;
+ }
+ *end='\0';
+ p++;
+ start=eat_ws(p);
+ while (!IS_EOF(*p))
+ p++;
+ p--;
+ while ((p != start) && (IS_WS(*p)))
+ p--;
+ p++;
+ *p='\0';
+
+ if ((v=(CONF_VALUE *)Malloc(sizeof(CONF_VALUE))) == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (psection == NULL) psection=section;
+ v->name=(char *)Malloc(strlen(pname)+1);
+ v->value=NULL;
+ if (v->name == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ strcpy(v->name,pname);
+ if (!str_copy(ret,psection,&(v->value),start)) goto err;
+
+ if (strcmp(psection,section) != 0)
+ {
+ if ((tv=get_section(ret,psection))
+ == NULL)
+ tv=new_section(ret,psection);
+ if (tv == NULL)
+ {
+ CONFerr(CONF_F_CONF_LOAD,CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
+ goto err;
+ }
+ ts=(STACK *)tv->value;
+ }
+ else
+ {
+ tv=sv;
+ ts=section_sk;
+ }
+ v->section=tv->section;
+ if (!sk_push(ts,(char *)v))
+ {
+ CONFerr(CONF_F_CONF_LOAD,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ vv=(CONF_VALUE *)lh_insert(ret,(char *)v);
+ if (vv != NULL)
+ {
+ sk_delete_ptr(ts,(char *)vv);
+ Free(vv->name);
+ Free(vv->value);
+ Free(vv);
+ }
+ v=NULL;
+ }
+ }
+ if (buff != NULL) BUF_MEM_free(buff);
+ if (section != NULL) Free(section);
+ if (in != NULL) fclose(in);
+ return(ret);
+err:
+ if (buff != NULL) BUF_MEM_free(buff);
+ if (section != NULL) Free(section);
+ if (line != NULL) *line=eline;
+ if (in != NULL) fclose(in);
+ if ((h != ret) && (ret != NULL)) CONF_free(ret);
+ if (v != NULL)
+ {
+ if (v->name != NULL) Free(v->name);
+ if (v->value != NULL) Free(v->value);
+ if (v != NULL) Free(v);
+ }
+ return(NULL);
+ }
+
+char *CONF_get_string(conf,section,name)
+LHASH *conf;
+char *section;
+char *name;
+ {
+ CONF_VALUE *v,vv;
+ char *p;
+
+ if (name == NULL) return(NULL);
+ if (conf != NULL)
+ {
+ if (section != NULL)
+ {
+ vv.name=name;
+ vv.section=section;
+ v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
+ if (v != NULL) return(v->value);
+ if (strcmp(section,"ENV") == 0)
+ {
+ p=Getenv(name);
+ if (p != NULL) return(p);
+ }
+ }
+ vv.section="default";
+ vv.name=name;
+ v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
+ if (v != NULL)
+ return(v->value);
+ else
+ return(NULL);
+ }
+ else
+ return(Getenv(name));
+ }
+
+static CONF_VALUE *get_section(conf,section)
+LHASH *conf;
+char *section;
+ {
+ CONF_VALUE *v,vv;
+
+ if ((conf == NULL) || (section == NULL)) return(NULL);
+ vv.name=NULL;
+ vv.section=section;
+ v=(CONF_VALUE *)lh_retrieve(conf,(char *)&vv);
+ return(v);
+ }
+
+STACK *CONF_get_section(conf,section)
+LHASH *conf;
+char *section;
+ {
+ CONF_VALUE *v;
+
+ v=get_section(conf,section);
+ if (v != NULL)
+ return((STACK *)v->value);
+ else
+ return(NULL);
+ }
+
+long CONF_get_number(conf,section,name)
+LHASH *conf;
+char *section;
+char *name;
+ {
+ char *str;
+ long ret=0;
+
+ str=CONF_get_string(conf,section,name);
+ if (str == NULL) return(0);
+ for (;;)
+ {
+ if (IS_NUMER(*str))
+ ret=ret*10+(*str -'0');
+ else
+ return(ret);
+ str++;
+ }
+ }
+
+void CONF_free(conf)
+LHASH *conf;
+ {
+ if (conf == NULL) return;
+
+ conf->down_load=0; /* evil thing to make sure the 'Free()'
+ * works as expected */
+ lh_doall_arg(conf,(void (*)())value_free_hash,(char *)conf);
+
+ /* We now have only 'section' entries in the hash table.
+ * Due to problems with */
+
+ lh_doall_arg(conf,(void (*)())value_free_stack,(char *)conf);
+ lh_free(conf);
+ }
+
+static void value_free_hash(a,conf)
+CONF_VALUE *a;
+LHASH *conf;
+ {
+ if (a->name != NULL)
+ {
+ a=(CONF_VALUE *)lh_delete(conf,(char *)a);
+ }
+ }
+
+static void value_free_stack(a,conf)
+CONF_VALUE *a;
+LHASH *conf;
+ {
+ CONF_VALUE *vv;
+ STACK *sk;
+ int i;
+
+ if (a->name != NULL) return;
+
+ sk=(STACK *)a->value;
+ for (i=sk_num(sk)-1; i>=0; i--)
+ {
+ vv=(CONF_VALUE *)sk_value(sk,i);
+ Free(vv->value);
+ Free(vv->name);
+ Free(vv);
+ }
+ if (sk != NULL) sk_free(sk);
+ Free(a->section);
+ Free(a);
+ }
+
+static void clear_comments(p)
+char *p;
+ {
+ char *to;
+
+ to=p;
+ for (;;)
+ {
+ if (IS_COMMENT(*p))
+ {
+ *p='\0';
+ return;
+ }
+ if (IS_QUOTE(*p))
+ {
+ p=scan_quote(p);
+ continue;
+ }
+ if (IS_ESC(*p))
+ {
+ p=scan_esc(p);
+ continue;
+ }
+ if (IS_EOF(*p))
+ return;
+ else
+ p++;
+ }
+ }
+
+static int str_copy(conf,section,pto,from)
+LHASH *conf;
+char *section;
+char **pto,*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(*from))
+ {
+ q= *from;
+ from++;
+ while ((*from != '\0') && (*from != q))
+ {
+ if (*from == '\\')
+ {
+ from++;
+ if (*from == '\0') break;
+ }
+ buf->data[to++]= *(from++);
+ }
+ }
+ else if (*from == '\\')
+ {
+ from++;
+ v= *(from++);
+ if (v == '\0') 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 (*from == '\0')
+ 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(*e))
+ e++;
+ if ((e[0] == ':') && (e[1] == ':'))
+ {
+ cp=np;
+ rrp=e;
+ rr= *e;
+ *rrp='\0';
+ e+=2;
+ np=e;
+ while (IS_ALPHA_NUMERIC(*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
+ * ns which is the start of the name string which is
+ * '\0' terminated.
+ * cs which is the start of the section string which is
+ * '\0' terminated.
+ * e is the 'next point after'.
+ * r and s are the chars replaced by the '\0'
+ * rp and sp is where 'r' and 's' 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(buf,(strlen(p)+len-(e-from)));
+ while (*p)
+ buf->data[to++]= *(p++);
+ from=e;
+ }
+ else
+ buf->data[to++]= *(from++);
+ }
+ buf->data[to]='\0';
+ if (*pto != NULL) Free(*pto);
+ *pto=buf->data;
+ Free(buf);
+ return(1);
+err:
+ if (buf != NULL) BUF_MEM_free(buf);
+ return(0);
+ }
+
+static char *eat_ws(p)
+char *p;
+ {
+ while (IS_WS(*p) && (!IS_EOF(*p)))
+ p++;
+ return(p);
+ }
+
+static char *eat_alpha_numeric(p)
+char *p;
+ {
+ for (;;)
+ {
+ if (IS_ESC(*p))
+ {
+ p=scan_esc(p);
+ continue;
+ }
+ if (!IS_ALPHA_NUMERIC_PUNCT(*p))
+ return(p);
+ p++;
+ }
+ }
+
+static unsigned long hash(v)
+CONF_VALUE *v;
+ {
+ return((lh_strhash(v->section)<<2)^lh_strhash(v->name));
+ }
+
+static int cmp(a,b)
+CONF_VALUE *a,*b;
+ {
+ int i;
+
+ if (a->section != b->section)
+ {
+ i=strcmp(a->section,b->section);
+ if (i) return(i);
+ }
+
+ if ((a->name != NULL) && (b->name != NULL))
+ {
+ i=strcmp(a->name,b->name);
+ return(i);
+ }
+ else if (a->name == b->name)
+ return(0);
+ else
+ return((a->name == NULL)?-1:1);
+ }
+
+static char *scan_quote(p)
+char *p;
+ {
+ int q= *p;
+
+ p++;
+ while (!(IS_EOF(*p)) && (*p != q))
+ {
+ if (IS_ESC(*p))
+ {
+ p++;
+ if (IS_EOF(*p)) return(p);
+ }
+ p++;
+ }
+ if (*p == q) p++;
+ return(p);
+ }
+
+static CONF_VALUE *new_section(conf,section)
+LHASH *conf;
+char *section;
+ {
+ STACK *sk=NULL;
+ int ok=0,i;
+ CONF_VALUE *v=NULL,*vv;
+
+ if ((sk=sk_new_null()) == NULL)
+ goto err;
+ if ((v=(CONF_VALUE *)Malloc(sizeof(CONF_VALUE))) == NULL)
+ goto err;
+ i=strlen(section)+1;
+ if ((v->section=(char *)Malloc(i)) == NULL)
+ goto err;
+
+ memcpy(v->section,section,i);
+ v->name=NULL;
+ v->value=(char *)sk;
+
+ vv=(CONF_VALUE *)lh_insert(conf,(char *)v);
+#ifndef WIN16
+ if (vv != NULL)
+ {
+ fprintf(stderr,"internal fault\n");
+ abort();
+ }
+#endif
+ ok=1;
+err:
+ if (!ok)
+ {
+ if (sk != NULL) sk_free(sk);
+ if (v != NULL) Free(v);
+ v=NULL;
+ }
+ return(v);
+ }
