Back to index

lightning-sunbird  0.9+nobinonly
sslerror.h
Go to the documentation of this file.
00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is the Netscape security libraries.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * Netscape Communications Corporation.
00018  * Portions created by the Initial Developer are Copyright (C) 1994-2000
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *
00023  * Alternatively, the contents of this file may be used under the terms of
00024  * either the GNU General Public License Version 2 or later (the "GPL"), or
00025  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00026  * in which case the provisions of the GPL or the LGPL are applicable instead
00027  * of those above. If you wish to allow use of your version of this file only
00028  * under the terms of either the GPL or the LGPL, and not to allow others to
00029  * use your version of this file under the terms of the MPL, indicate your
00030  * decision by deleting the provisions above and replace them with the notice
00031  * and other provisions required by the GPL or the LGPL. If you do not delete
00032  * the provisions above, a recipient may use your version of this file under
00033  * the terms of any one of the MPL, the GPL or the LGPL.
00034  *
00035  * ***** END LICENSE BLOCK ***** */
00036 
00037 #include <stdio.h>
00038 #include <string.h>
00039 #include "nspr.h"
00040 
00041 struct tuple_str {
00042     PRErrorCode       errNum;
00043     const char * errString;
00044 };
00045 
00046 typedef struct tuple_str tuple_str;
00047 
00048 #define ER2(a,b)   {a, b},
00049 #define ER3(a,b,c) {a, c},
00050 
00051 #include "secerr.h"
00052 #include "sslerr.h"
00053 
00054 const tuple_str errStrings[] = {
00055 
00056 /* keep this list in asceding order of error numbers */
00057 #include "SSLerrs.h"
00058 #include "SECerrs.h"
00059 #include "NSPRerrs.h"
00060 
00061 };
00062 
00063 const PRInt32 numStrings = sizeof(errStrings) / sizeof(tuple_str);
00064 
00065 /* Returns a UTF-8 encoded constant error string for "errNum".
00066  * Returns NULL of errNum is unknown.
00067  */
00068 const char *
00069 SSL_Strerror(PRErrorCode errNum) {
00070     PRInt32 low  = 0;
00071     PRInt32 high = numStrings - 1;
00072     PRInt32 i;
00073     PRErrorCode num;
00074     static int initDone;
00075 
00076     /* make sure table is in ascending order.
00077      * binary search depends on it.
00078      */
00079     if (!initDone) {
00080        PRErrorCode lastNum = (PRInt32)0x80000000;
00081        for (i = low; i <= high; ++i) {
00082            num = errStrings[i].errNum;
00083            if (num <= lastNum) {
00084               fprintf(stderr, 
00085 "sequence error in error strings at item %d\n"
00086 "error %d (%s)\n"
00087 "should come after \n"
00088 "error %d (%s)\n",
00089                       i, lastNum, errStrings[i-1].errString, 
00090                      num, errStrings[i].errString);
00091            }
00092            lastNum = num;
00093        }
00094        initDone = 1;
00095     }
00096 
00097     /* Do binary search of table. */
00098     while (low + 1 < high) {
00099        i = (low + high) / 2;
00100        num = errStrings[i].errNum;
00101        if (errNum == num) 
00102            return errStrings[i].errString;
00103         if (errNum < num)
00104            high = i;
00105        else 
00106            low = i;
00107     }
00108     if (errNum == errStrings[low].errNum)
00109        return errStrings[low].errString;
00110     if (errNum == errStrings[high].errNum)
00111        return errStrings[high].errString;
00112     return NULL;
00113 }