Import of old SSLeay release: SSLeay 0.9.0b
[openssl.git] / crypto / err / err.c
index 6eec77a1545052dd54c84ed2619baf1b26105567..a65192493af3acab7bc0f2bdd151469ae87a109c 100644 (file)
@@ -1,5 +1,5 @@
 /* crypto/err/err.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
  * This package is an SSL implementation written
@@ -73,11 +73,16 @@ static unsigned long err_hash(ERR_STRING_DATA *a);
 static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b);
 static unsigned long pid_hash(ERR_STATE *pid);
 static int pid_cmp(ERR_STATE *a,ERR_STATE *pid);
+static unsigned long get_error_values(int inc,char **file,int *line,
+       char **data,int *flags);
+static void ERR_STATE_free(ERR_STATE *s);
 #else
 static unsigned long err_hash();
 static int err_cmp();
 static unsigned long pid_hash();
 static int pid_cmp();
+static void ERR_STATE_free();
+ERR_STATE *s;
 #endif
 
 #ifndef NO_ERR
@@ -147,6 +152,27 @@ static ERR_STRING_DATA ERR_str_reasons[]=
        };
 #endif
 
+#define err_clear_data(p,i) \
+       if (((p)->err_data[i] != NULL) && \
+               (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
+               {  \
+               Free((p)->err_data[i]); \
+               (p)->err_data[i]=NULL; \
+               } \
+       (p)->err_data_flags[i]=0;
+
+static void ERR_STATE_free(s)
+ERR_STATE *s;
+       {
+       int i;
+
+       for (i=0; i<ERR_NUM_ERRORS; i++)
+               {
+               err_clear_data(s,i);
+               }
+       Free(s);
+       }
+
 void ERR_load_ERR_strings()
        {
        static int init=1;
@@ -211,6 +237,8 @@ void ERR_free_strings()
        CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
        }
 
+/********************************************************/
+
 void ERR_put_error(lib,func,reason,file,line)
 int lib,func,reason;
 char *file;
@@ -226,117 +254,109 @@ int line;
        es->err_buffer[es->top]=ERR_PACK(lib,func,reason);
        es->err_file[es->top]=file;
        es->err_line[es->top]=line;
+       err_clear_data(es,es->top);
        }
 
 void ERR_clear_error()
        {
-       int i;
        ERR_STATE *es;
 
        es=ERR_get_state();
 
+#if 0
+       /* hmm... is this needed */
        for (i=0; i<ERR_NUM_ERRORS; i++)
                {
                es->err_buffer[i]=0;
                es->err_file[i]=NULL;
                es->err_line[i]= -1;
+               err_clear_data(es,i);
                }
+#endif
        es->top=es->bottom=0;
        }
 
-unsigned long ERR_peek_error()
-       {       
-       int i;
-       ERR_STATE *es;
-
-       /* should be fine since only one thread should ever be playing
-        * with the value returned from this call */
-       es=ERR_get_state();
-
-       if (es->bottom == es->top) return(0);
-       i=(es->bottom+1)%ERR_NUM_ERRORS;
-
-
-       return(es->err_buffer[i]);
-       }
 
 unsigned long ERR_get_error()
-       {
-       int i;
-       unsigned long ret;
-       ERR_STATE *es;
+       { return(get_error_values(1,NULL,NULL,NULL,NULL)); }
 
-       es=ERR_get_state();
-
-       if (es->bottom == es->top) return(0);
-       i=(es->bottom+1)%ERR_NUM_ERRORS;
-       es->bottom=i;
-       ret=es->err_buffer[i];
-       es->err_buffer[i]=0;
+unsigned long ERR_get_error_line(file,line)
+char **file;
+int *line;
+       { return(get_error_values(1,file,line,NULL,NULL)); }
 
+unsigned long ERR_get_error_line_data(file,line,data,flags)
+char **file;
+int *line;
+char **data;
+int *flags;
+       { return(get_error_values(1,file,line,data,flags)); }
 
-       return(ret);
-       }
+unsigned long ERR_peek_error()
+       { return(get_error_values(0,NULL,NULL,NULL,NULL)); }
 
 unsigned long ERR_peek_error_line(file,line)
 char **file;
 int *line;
-       {       
-       int i=0;
-       ERR_STATE *es;
-
-       es=ERR_get_state();
-
-       if (es->bottom == es->top)
-               {
-               return(0);
-               }
-
-       i=(es->bottom+1)%ERR_NUM_ERRORS;
-       if (es->err_file[i] == NULL)
-               {
-               *file="NA";
-               *line=0;
-               }
-       else
-               {
-               *file=es->err_file[i];
-               *line=es->err_line[i];
-               }
+       { return(get_error_values(0,file,line,NULL,NULL)); }
 
-       return(es->err_buffer[i]);
-       }
+unsigned long ERR_peek_error_line_data(file,line,data,flags)
+char **file;
+int *line;
+char **data;
+int *flags;
+       { return(get_error_values(0,file,line,data,flags)); }
 
-unsigned long ERR_get_error_line(file,line)
+static unsigned long get_error_values(inc,file,line,data,flags)
+int inc;
 char **file;
 int *line;
-       {
-       int i;
-       unsigned long ret;
+char **data;
+int *flags;
+       {       
+       int i=0;
        ERR_STATE *es;
+       unsigned long ret;
 
        es=ERR_get_state();
 
-       if (es->bottom == es->top)
-               return(0);
-
+       if (es->bottom == es->top) return(0);
        i=(es->bottom+1)%ERR_NUM_ERRORS;
-       es->bottom=i;
-       ret=  es->err_buffer[i];
-       if (es->err_file[i] == NULL)
+
+       ret=es->err_buffer[i];
+       if (inc)
                {
-               *file="NA";
-               *line=0;
+               es->bottom=i;
+               es->err_buffer[i]=0;
                }
-       else
+
+       if ((file != NULL) && (line != NULL))
                {
-               *file=es->err_file[i];
-               *line=es->err_line[i];
+               if (es->err_file[i] == NULL)
+                       {
+                       *file="NA";
+                       if (line != NULL) *line=0;
+                       }
+               else
+                       {
+                       *file=es->err_file[i];
+                       if (line != NULL) *line=es->err_line[i];
+                       }
                }
-       es->err_buffer[i]=0;
-       es->err_file[i]=NULL;
-       es->err_line[i]= -1;
 
+       if (data != NULL)
+               {
+               if (es->err_data[i] == NULL)
+                       {
+                       *data="";
+                       if (flags != NULL) *flags=0;
+                       }
+               else
+                       {
+                       *data=es->err_data[i];
+                       if (flags != NULL) *flags=es->err_data_flags[i];
+                       }
+               }
        return(ret);
        }
 
@@ -498,14 +518,16 @@ unsigned long pid;
        tmp.pid=pid;
        CRYPTO_w_lock(CRYPTO_LOCK_ERR);
        p=(ERR_STATE *)lh_delete(thread_hash,(char *)&tmp);
-       if (p != NULL) Free(p);
        CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
+
+       if (p != NULL) ERR_STATE_free(p);
        }
 
 ERR_STATE *ERR_get_state()
        {
        static ERR_STATE fallback;
        ERR_STATE *ret=NULL,tmp,*tmpp;
+       int i;
        unsigned long pid;
 
        pid=(unsigned long)CRYPTO_thread_id();
@@ -539,12 +561,80 @@ ERR_STATE *ERR_get_state()
                ret->pid=pid;
                ret->top=0;
                ret->bottom=0;
+               for (i=0; i<ERR_NUM_ERRORS; i++)
+                       {
+                       ret->err_data[i]=NULL;
+                       ret->err_data_flags[i]=0;
+                       }
                CRYPTO_w_lock(CRYPTO_LOCK_ERR);
                tmpp=(ERR_STATE *)lh_insert(thread_hash,(char *)ret);
                CRYPTO_w_unlock(CRYPTO_LOCK_ERR);
                if (tmpp != NULL) /* old entry - should not happen */
-                       Free(tmpp);
+                       {
+                       ERR_STATE_free(tmpp);
+                       }
                }
        return(ret);
        }
 
+int ERR_get_next_error_library()
+       {
+       static int value=ERR_LIB_USER;
+
+       return(value++);
+       }
+
+void ERR_set_error_data(data,flags)
+char *data;
+int flags;
+       {
+       ERR_STATE *es;
+       int i;
+
+       es=ERR_get_state();
+
+       i=es->top;
+       if (i == 0)
+               i=ERR_NUM_ERRORS-1;
+
+       es->err_data[i]=data;
+       es->err_data_flags[es->top]=flags;
+       }
+
+void ERR_add_error_data( VAR_PLIST(int , num))
+VAR_ALIST
+        {
+        VAR_BDEFN(args, int, num);
+       int i,n,s;
+       char *str,*p,*a;
+
+       s=64;
+       str=Malloc(s+1);
+       if (str == NULL) return;
+       str[0]='\0';
+
+       VAR_INIT(args,int,num);
+       n=0;
+       for (i=0; i<num; i++)
+               {
+               VAR_ARG(args,char *,a);
+               n+=strlen(a);
+               if (n > s)
+                       {
+                       s=n+20;
+                       p=Realloc(str,s+1);
+                       if (p == NULL)
+                               {
+                               Free(str);
+                               return;
+                               }
+                       else
+                               str=p;
+                       }
+               strcat(str,a);
+               }
+       ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING);
+
+       VAR_END( args );
+       }
+