|
|
/*++
Copyright (c) 1995 Microsoft Corporation
Module Name: fcache.cxx
Abstract: This module supports functions for file caching for servers
Author:
Murali R. Krishnan ( MuraliK ) 11-Oct-1995
Environment:
Win32 Apps
Project:
Internet Services Common DLL
Functions Exported:
Revision History: Obtained from old inetsvcs.dll
--*/
/************************************************************
* Include Headers ************************************************************/#include <tcpdllp.hxx>
#include <issched.hxx>
#include <tsunami.hxx>
#include <iistypes.hxx>
#include <festrcnv.h>
# include "inetreg.h"
//
// Prototypes
//
//
// RobSol: May 2002
// deleted implementation of
// CheckOutCachedFileFromURI(
// CheckOutCachedFile(
// CheckInCachedFile(
//
//
// Globals
//
/************************************************************
* Functions ************************************************************/
//
// Taken from NCSA HTTP and wwwlib.
//
// NOTE: These conform to RFC1113, which is slightly different then the Unix
// uuencode and uudecode!
//
const int _pr2six[256]={ 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,62,64,64,64,63, 52,53,54,55,56,57,58,59,60,61,64,64,64,64,64,64,64,0,1,2,3,4,5,6,7,8,9, 10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,64,64,64,64,64,64,26,27, 28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64};
char _six2pr[64] = { 'A','B','C','D','E','F','G','H','I','J','K','L','M', 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z', 'a','b','c','d','e','f','g','h','i','j','k','l','m', 'n','o','p','q','r','s','t','u','v','w','x','y','z', '0','1','2','3','4','5','6','7','8','9','+','/'};
const int _pr2six64[256]={ 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15, 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39, 40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63, 0,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64,64, 64,64,64,64,64,64,64,64,64,64,64,64,64};
char _six2pr64[64] = { '`','!','"','#','$','%','&','\'','(',')','*','+',',', '-','.','/','0','1','2','3','4','5','6','7','8','9', ':',';','<','=','>','?','@','A','B','C','D','E','F', 'G','H','I','J','K','L','M','N','O','P','Q','R','S', 'T','U','V','W','X','Y','Z','[','\\',']','^','_'};
BOOL uudecode(char * bufcoded, BUFFER * pbuffdecoded, DWORD * pcbDecoded, BOOL fBase64 ){ int nbytesdecoded; char *bufin = bufcoded; unsigned char *bufout; int nprbytes; int *pr2six = (int*)(fBase64 ? _pr2six64 : _pr2six);
/* Strip leading whitespace. */
while(*bufcoded==' ' || *bufcoded == '\t') bufcoded++;
/* Figure out how many characters are in the input buffer.
* If this would decode into more bytes than would fit into * the output buffer, adjust the number of input bytes downwards. */ bufin = bufcoded; while(pr2six[*(bufin++)] <= 63); nprbytes = DIFF(bufin - bufcoded) - 1; nbytesdecoded = ((nprbytes+3)/4) * 3;
if ( !pbuffdecoded->Resize( nbytesdecoded + 4 )) return FALSE;
bufout = (unsigned char *) pbuffdecoded->QueryPtr();
bufin = bufcoded;
while (nprbytes > 0) { *(bufout++) = (unsigned char) (pr2six[*bufin] << 2 | pr2six[bufin[1]] >> 4); *(bufout++) = (unsigned char) (pr2six[bufin[1]] << 4 | pr2six[bufin[2]] >> 2); *(bufout++) = (unsigned char) (pr2six[bufin[2]] << 6 | pr2six[bufin[3]]); bufin += 4; nprbytes -= 4; }
if(nprbytes & 03) { if(pr2six[bufin[-2]] > 63) nbytesdecoded -= 2; else nbytesdecoded -= 1; }
((CHAR *)pbuffdecoded->QueryPtr())[nbytesdecoded] = '\0';
if ( pcbDecoded ) *pcbDecoded = nbytesdecoded;
return TRUE;}
//
// NOTE NOTE NOTE
// If the buffer length isn't a multiple of 3, we encode one extra byte beyond the
// end of the buffer. This garbage byte is stripped off by the uudecode code, but
// -IT HAS TO BE THERE- for uudecode to work. This applies not only our uudecode, but
// to every uudecode() function that is based on the lib-www distribution [probably
// a fairly large percentage].
//
BOOL uuencode( BYTE * bufin, DWORD nbytes, BUFFER * pbuffEncoded, BOOL fBase64 ){ unsigned char *outptr; unsigned int i; char *six2pr = fBase64 ? _six2pr64 : _six2pr; BOOL fOneByteDiff = FALSE; BOOL fTwoByteDiff = FALSE; unsigned int iRemainder = 0; unsigned int iClosestMultOfThree = 0; //
// Resize the buffer to 133% of the incoming data
//
if ( !pbuffEncoded->Resize( nbytes + ((nbytes + 3) / 3) + 4)) return FALSE;
outptr = (unsigned char *) pbuffEncoded->QueryPtr();
iRemainder = nbytes % 3; //also works for nbytes == 1, 2
fOneByteDiff = (iRemainder == 1 ? TRUE : FALSE); fTwoByteDiff = (iRemainder == 2 ? TRUE : FALSE); iClosestMultOfThree = ((nbytes - iRemainder)/3) * 3 ;
//
// Encode bytes in buffer up to multiple of 3 that is closest to nbytes.
//
for (i=0; i< iClosestMultOfThree ; i += 3) { *(outptr++) = six2pr[*bufin >> 2]; /* c1 */ *(outptr++) = six2pr[((*bufin << 4) & 060) | ((bufin[1] >> 4) & 017)]; /*c2*/ *(outptr++) = six2pr[((bufin[1] << 2) & 074) | ((bufin[2] >> 6) & 03)];/*c3*/ *(outptr++) = six2pr[bufin[2] & 077]; /* c4 */
bufin += 3; }
//
// We deal with trailing bytes by pretending that the input buffer has been padded with
// zeros. Expressions are thus the same as above, but the second half drops off b'cos
// ( a | ( b & 0) ) = ( a | 0 ) = a
//
if (fOneByteDiff) { *(outptr++) = six2pr[*bufin >> 2]; /* c1 */ *(outptr++) = six2pr[((*bufin << 4) & 060)]; /* c2 */
//pad with '='
*(outptr++) = '='; /* c3 */ *(outptr++) = '='; /* c4 */ } else if (fTwoByteDiff) { *(outptr++) = six2pr[*bufin >> 2]; /* c1 */ *(outptr++) = six2pr[((*bufin << 4) & 060) | ((bufin[1] >> 4) & 017)]; /*c2*/ *(outptr++) = six2pr[((bufin[1] << 2) & 074)];/*c3*/
//pad with '='
*(outptr++) = '='; /* c4 */ }
//encoded buffer must be zero-terminated
*outptr = '\0';
return TRUE;}
/************************ End of File ***********************/
|
