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lightning-sunbird  0.9+nobinonly
secerror.c
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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 #include "nspr.h"
00037 
00038 struct tuple_str {
00039     PRErrorCode       errNum;
00040     const char * errString;
00041 };
00042 
00043 typedef struct tuple_str tuple_str;
00044 
00045 #define ER2(a,b)   {a, b},
00046 #define ER3(a,b,c) {a, c},
00047 
00048 #include "secerr.h"
00049 #include "sslerr.h"
00050 
00051 const tuple_str errStrings[] = {
00052 
00053 /* keep this list in asceding order of error numbers */
00054 #include "SSLerrs.h"
00055 #include "SECerrs.h"
00056 #include "NSPRerrs.h"
00057 
00058 };
00059 
00060 const PRInt32 numStrings = sizeof(errStrings) / sizeof(tuple_str);
00061 
00062 /* Returns a UTF-8 encoded constant error string for "errNum".
00063  * Returns NULL of errNum is unknown.
00064  */
00065 const char *
00066 SECU_Strerror(PRErrorCode errNum) {
00067     PRInt32 low  = 0;
00068     PRInt32 high = numStrings - 1;
00069     PRInt32 i;
00070     PRErrorCode num;
00071     static int initDone;
00072 
00073     /* make sure table is in ascending order.
00074      * binary search depends on it.
00075      */
00076     if (!initDone) {
00077        PRErrorCode lastNum = ((PRInt32)0x80000000);
00078        for (i = low; i <= high; ++i) {
00079            num = errStrings[i].errNum;
00080            if (num <= lastNum) {
00081               fprintf(stderr, 
00082 "sequence error in error strings at item %d\n"
00083 "error %d (%s)\n"
00084 "should come after \n"
00085 "error %d (%s)\n",
00086                       i, lastNum, errStrings[i-1].errString, 
00087                      num, errStrings[i].errString);
00088            }
00089            lastNum = num;
00090        }
00091        initDone = 1;
00092     }
00093 
00094     /* Do binary search of table. */
00095     while (low + 1 < high) {
00096        i = (low + high) / 2;
00097        num = errStrings[i].errNum;
00098        if (errNum == num) 
00099            return errStrings[i].errString;
00100         if (errNum < num)
00101            high = i;
00102        else 
00103            low = i;
00104     }
00105     if (errNum == errStrings[low].errNum)
00106        return errStrings[low].errString;
00107     if (errNum == errStrings[high].errNum)
00108        return errStrings[high].errString;
00109     return NULL;
00110 }