Delete bundled copy of NSS and replace with README.

nspr/lib/libc/src/base64.c

Index: nspr/lib/libc/src/base64.c
diff --git a/nspr/lib/libc/src/base64.c b/nspr/lib/libc/src/base64.c
deleted file mode 100644
index 07a4902f5b4c7e244f1c1134b83f4929028531d9..0000000000000000000000000000000000000000
--- a/nspr/lib/libc/src/base64.c
+++ /dev/null
@@ -1,416 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "plbase64.h"
-#include "prlog.h" /* For PR_NOT_REACHED */
-#include "prmem.h" /* for malloc / PR_MALLOC */
-
-#include <string.h> /* for strlen */
-
-static unsigned char *base = (unsigned char *)"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-static void
-encode3to4
-(
-    const unsigned char    *src,
-    unsigned char          *dest
-)
-{
-    PRUint32 b32 = (PRUint32)0;
-    PRIntn i, j = 18;
-
-    for( i = 0; i < 3; i++ )
-    {
-        b32 <<= 8;
-        b32 |= (PRUint32)src[i];
-    }
-
-    for( i = 0; i < 4; i++ )
-    {
-        dest[i] = base[ (PRUint32)((b32>>j) & 0x3F) ];
-        j -= 6;
-    }
-
-    return;
-}
-
-static void
-encode2to4
-(
-    const unsigned char    *src,
-    unsigned char          *dest
-)
-{
-    dest[0] = base[ (PRUint32)((src[0]>>2) & 0x3F) ];
-    dest[1] = base[ (PRUint32)(((src[0] & 0x03) << 4) | ((src[1] >> 4) & 0x0F)) ];
-    dest[2] = base[ (PRUint32)((src[1] & 0x0F) << 2) ];
-    dest[3] = (unsigned char)'=';
-    return;
-}
-
-static void
-encode1to4
-(
-    const unsigned char    *src,
-    unsigned char          *dest
-)
-{
-    dest[0] = base[ (PRUint32)((src[0]>>2) & 0x3F) ];
-    dest[1] = base[ (PRUint32)((src[0] & 0x03) << 4) ];
-    dest[2] = (unsigned char)'=';
-    dest[3] = (unsigned char)'=';
-    return;
-}
-
-static void
-encode
-(
-    const unsigned char    *src,
-    PRUint32                srclen,
-    unsigned char          *dest
-)
-{
-    while( srclen >= 3 )
-    {
-        encode3to4(src, dest);
-        src += 3;
-        dest += 4;
-        srclen -= 3;
-    }
-
-    switch( srclen )
-    {
-        case 2:
-            encode2to4(src, dest);
-            break;
-        case 1:
-            encode1to4(src, dest);
-            break;
-        case 0:
-            break;
-        default:
-            PR_NOT_REACHED("coding error");
-    }
-
-    return;
-}
-
-/*
- * PL_Base64Encode
- *
- * If the destination argument is NULL, a return buffer is 
- * allocated, and the data therein will be null-terminated.  
- * If the destination argument is not NULL, it is assumed to
- * be of sufficient size, and the contents will not be null-
- * terminated by this routine.
- *
- * Returns null if the allocation fails.
- */
-
-PR_IMPLEMENT(char *)
-PL_Base64Encode
-(
-    const char *src,
-    PRUint32    srclen,
-    char       *dest
-)
-{
-    if( 0 == srclen )
-    {
-        size_t len = strlen(src);
-        srclen = len;
-        /* Detect truncation. */
-        if( srclen != len )
-        {
-            return (char *)0;
-        }
-    }
-
-    if( (char *)0 == dest )
-    {
-        PRUint32 destlen;
-        /* Ensure all PRUint32 values stay within range. */
-        if( srclen > (PR_UINT32_MAX/4) * 3 )
-        {
-            return (char *)0;
-        }
-        destlen = ((srclen + 2)/3) * 4;
-        dest = (char *)PR_MALLOC(destlen + 1);
-        if( (char *)0 == dest )
-        {
-            return (char *)0;
-        }
-        dest[ destlen ] = (char)0; /* null terminate */
-    }
-
-    encode((const unsigned char *)src, srclen, (unsigned char *)dest);
-    return dest;
-}
-
-static PRInt32
-codetovalue
-(
-    unsigned char c
-)
-{
-    if( (c >= (unsigned char)'A') && (c <= (unsigned char)'Z') )
-    {
-        return (PRInt32)(c - (unsigned char)'A');
-    }
-    else if( (c >= (unsigned char)'a') && (c <= (unsigned char)'z') )
-    {
-        return ((PRInt32)(c - (unsigned char)'a') +26);
-    }
-    else if( (c >= (unsigned char)'0') && (c <= (unsigned char)'9') )
-    {
-        return ((PRInt32)(c - (unsigned char)'0') +52);
-    }
-    else if( (unsigned char)'+' == c )
-    {
-        return (PRInt32)62;
-    }
-    else if( (unsigned char)'/' == c )
-    {
-        return (PRInt32)63;
-    }
-    else
-    {
-        return -1;
-    }
-}
-
-static PRStatus
-decode4to3
-(
-    const unsigned char    *src,
-    unsigned char          *dest
-)
-{
-    PRUint32 b32 = (PRUint32)0;
-    PRInt32 bits;
-    PRIntn i;
-
-    for( i = 0; i < 4; i++ )
-    {
-        bits = codetovalue(src[i]);
-        if( bits < 0 )
-        {
-            return PR_FAILURE;
-        }
-
-        b32 <<= 6;
-        b32 |= bits;
-    }
-
-    dest[0] = (unsigned char)((b32 >> 16) & 0xFF);
-    dest[1] = (unsigned char)((b32 >>  8) & 0xFF);
-    dest[2] = (unsigned char)((b32      ) & 0xFF);
-
-    return PR_SUCCESS;
-}
-
-static PRStatus
-decode3to2
-(
-    const unsigned char    *src,
-    unsigned char          *dest
-)
-{
-    PRUint32 b32 = (PRUint32)0;
-    PRInt32 bits;
-    PRUint32 ubits;
-
-    bits = codetovalue(src[0]);
-    if( bits < 0 )
-    {
-        return PR_FAILURE;
-    }
-
-    b32 = (PRUint32)bits;
-    b32 <<= 6;
-
-    bits = codetovalue(src[1]);
-    if( bits < 0 )
-    {
-        return PR_FAILURE;
-    }
-
-    b32 |= (PRUint32)bits;
-    b32 <<= 4;
-
-    bits = codetovalue(src[2]);
-    if( bits < 0 )
-    {
-        return PR_FAILURE;
-    }
-
-    ubits = (PRUint32)bits;
-    b32 |= (ubits >> 2);
-
-    dest[0] = (unsigned char)((b32 >> 8) & 0xFF);
-    dest[1] = (unsigned char)((b32     ) & 0xFF);
-
-    return PR_SUCCESS;
-}
-
-static PRStatus
-decode2to1
-(
-    const unsigned char    *src,
-    unsigned char          *dest
-)
-{
-    PRUint32 b32;
-    PRUint32 ubits;
-    PRInt32 bits;
-
-    bits = codetovalue(src[0]);
-    if( bits < 0 )
-    {
-        return PR_FAILURE;
-    }
-
-    ubits = (PRUint32)bits;
-    b32 = (ubits << 2);
-
-    bits = codetovalue(src[1]);
-    if( bits < 0 )
-    {
-        return PR_FAILURE;
-    }
-
-    ubits = (PRUint32)bits;
-    b32 |= (ubits >> 4);
-
-    dest[0] = (unsigned char)b32;
-
-    return PR_SUCCESS;
-}
-
-static PRStatus
-decode
-(
-    const unsigned char    *src,
-    PRUint32                srclen,
-    unsigned char          *dest
-)
-{
-    PRStatus rv;
-
-    while( srclen >= 4 )
-    {
-        rv = decode4to3(src, dest);
-        if( PR_SUCCESS != rv )
-        {
-            return PR_FAILURE;
-        }
-
-        src += 4;
-        dest += 3;
-        srclen -= 4;
-    }
-
-    switch( srclen )
-    {
-        case 3:
-            rv = decode3to2(src, dest);
-            break;
-        case 2:
-            rv = decode2to1(src, dest);
-            break;
-        case 1:
-            rv = PR_FAILURE;
-            break;
-        case 0:
-            rv = PR_SUCCESS;
-            break;
-        default:
-            PR_NOT_REACHED("coding error");
-    }
-
-    return rv;
-}
-
-/*
- * PL_Base64Decode
- *
- * If the destination argument is NULL, a return buffer is
- * allocated and the data therein will be null-terminated.
- * If the destination argument is not null, it is assumed
- * to be of sufficient size, and the data will not be null-
- * terminated by this routine.
- * 
- * Returns null if the allocation fails, or if the source string is 
- * not well-formed.
- */
-
-PR_IMPLEMENT(char *)
-PL_Base64Decode
-(
-    const char *src,
-    PRUint32    srclen,
-    char       *dest
-)
-{
-    PRStatus status;
-    PRBool allocated = PR_FALSE;
-
-    if( (char *)0 == src )
-    {
-        return (char *)0;
-    }
-
-    if( 0 == srclen )
-    {
-        size_t len = strlen(src);
-        srclen = len;
-        /* Detect truncation. */
-        if( srclen != len )
-        {
-            return (char *)0;
-        }
-    }
-
-    if( srclen && (0 == (srclen & 3)) )
-    {
-        if( (char)'=' == src[ srclen-1 ] )
-        {
-            if( (char)'=' == src[ srclen-2 ] )
-            {
-                srclen -= 2;
-            }
-            else
-            {
-                srclen -= 1;
-            }
-        }
-    }
-
-    if( (char *)0 == dest )
-    {
-        /* The following computes ((srclen * 3) / 4) without overflow. */
-        PRUint32 destlen = (srclen / 4) * 3 + ((srclen % 4) * 3) / 4;
-        dest = (char *)PR_MALLOC(destlen + 1);
-        if( (char *)0 == dest )
-        {
-            return (char *)0;
-        }
-        dest[ destlen ] = (char)0; /* null terminate */
-        allocated = PR_TRUE;
-    }
-
-    status = decode((const unsigned char *)src, srclen, (unsigned char *)dest);
-    if( PR_SUCCESS != status )
-    {
-        if( PR_TRUE == allocated )
-        {
-            PR_DELETE(dest);
-        }
-
-        return (char *)0;
-    }
-
-    return dest;
-}