275 lines
6.8 KiB
C
275 lines
6.8 KiB
C
#ifdef _WIN32
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#include <windows.h>
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#else
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#include <unistd.h>
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#include <dlfcn.h>
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#ifdef __MACOSX__
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#include <stdlib.h>
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#include <string.h>
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#endif
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#endif //_WIN32
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#include <stdio.h>
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#include "paramcodec.h"
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#include "debug.h"
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long int param_encode( char *src,long int src_len, char *dst)
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{
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long int i = 0, j = 0;
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char base64_map[65] = "BADCFEGHIJKLMNOPQRSTUVWXYZbadcfeghijklmnopqrstuvwxyz0123456789+/";
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for (; i < src_len - src_len % 3; i += 3) {
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dst[j++] = base64_map[(src[i] >> 2) & 0x3F];
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dst[j++] = base64_map[((src[i] << 4) & 0x30) + ((src[i + 1] >> 4) & 0xF)];
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dst[j++] = base64_map[((src[i + 1] << 2) & 0x3C) + ((src[i + 2] >> 6) & 0x3)];
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dst[j++] = base64_map[src[i + 2] & 0x3F];
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}
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if (src_len % 3 == 1) {
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dst[j++] = base64_map[(src[i] >> 2) & 0x3F];
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dst[j++] = base64_map[(src[i] << 4) & 0x30];
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dst[j++] = '=';
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dst[j++] = '=';
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}else if (src_len % 3 == 2) {
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dst[j++] = base64_map[(src[i] >> 2) & 0x3F];
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dst[j++] = base64_map[((src[i] << 4) & 0x30) + ((src[i + 1] >> 4) & 0xF)];
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dst[j++] = base64_map[(src[i + 1] << 2) & 0x3C];
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dst[j++] = '=';
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}
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dst[j] = '\0';
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// DebugPrint("encode length:%ld\n",j);
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return j;
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}
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#ifdef PHP_WIN32
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long int param_decode(char *src, long int src_len, char *dst)
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{
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long int i = 0, j = 0;
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unsigned char base64_decode_map[256] = {
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 62, 255, 255, 255, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255,
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255, 0, 255, 255, 255, 1, 0, 3, 2, 5, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 255, 255, 27, 26, 29,
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28, 31, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
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49, 50, 51, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
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255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255};
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for (; i < src_len; i += 4) {
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dst[j++] = base64_decode_map[src[i]] << 2 |
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base64_decode_map[src[i + 1]] >> 4;
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dst[j++] = base64_decode_map[src[i + 1]] << 4 |
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base64_decode_map[src[i + 2]] >> 2;
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dst[j++] = base64_decode_map[src[i + 2]] << 6 |
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base64_decode_map[src[i + 3]];
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}
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dst[j] = '\0';
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// DebugPrint("decode length :%ld\n",j);
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return j;
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}
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#endif
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#define SHIFT_NUM 3
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void ShiftCopy( char* destBuf, char* srcBuf, int len, int bReverse )
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{
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int i;
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int shift = bReverse ? (8-SHIFT_NUM) : SHIFT_NUM;
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unsigned char mR = (1<<(8-shift)) - 1, mL = 0xFF - mR;
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for( i=0; i<len; i++ ){
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unsigned char ch = (unsigned char)srcBuf[i];
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destBuf[i] = (char)( ((ch & mL) >> (8-shift)) | ((ch & mR) << shift) );
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}
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}
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//////////////////////////////////////////////////////////////////////////////////////////
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// functions exports
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int ParamEncode( char* strEncode, int* len, char (*arrMap)[2][MAX_STR_LEN], int num )
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{
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int i, enc_len, pos=0, ret=0;
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char *strComb;
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if( num<=0 || !arrMap || !strEncode || !len )
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return -1;
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strComb = malloc( num * MAX_STR_LEN * 2 );
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if( !strComb )
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return -2;
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*((int*)strComb) = 0; //УÑéÖµ
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pos += 4;
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strComb[pos++] = (char)num;
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for( i=0; i<num; i++ ){
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unsigned char lenTemp = (unsigned char)strlen( arrMap[i][0] );
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if( lenTemp==0 || lenTemp>=MAX_STR_LEN ){
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ret = -3;
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break;
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}
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strComb[pos++] = lenTemp;
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memcpy( strComb + pos, arrMap[i][0], lenTemp );
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pos += lenTemp;
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lenTemp = (unsigned char)strlen( arrMap[i][1] );
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strComb[pos++] = lenTemp;
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if( lenTemp>=MAX_STR_LEN ){
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ret = -3;
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break;
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}
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if( lenTemp>0 ){
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memcpy( strComb + pos, arrMap[i][1], lenTemp );
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pos += lenTemp;
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}
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}
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if( ret==0 ){
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int vc = 0;
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strComb[pos] = 0;
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for( i=4; i<pos; i++ ){
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vc += strComb[i];
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}
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*((int*)strComb) = vc;
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DebugPrint( "ori len: %d\n", pos );
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ShiftCopy( strComb, strComb, pos, 0 );
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enc_len = (int)param_encode( strComb, pos, strEncode );
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strEncode[enc_len] = 0;
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DebugPrint( "enc len: %d\n", enc_len );
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*len = enc_len;
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}
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free( strComb );
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return ret;
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}
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#ifdef PHP_WIN32
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int ParamDecode( char* strDecode, int len, char (*arrMap)[2][MAX_STR_LEN], int* num )
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{
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int dec_len, count, i, ret=0, pos=0, vc=0;
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char *strComb;
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if( len<=0 || !strDecode || !arrMap || !num || *num<=0 )
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return -1;
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strComb = malloc( len );
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if( !strComb )
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return -2;
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dec_len = (int)param_decode( strDecode, len, strComb );
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ShiftCopy( strComb, strComb, dec_len, 1 );
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for( i=4; i<dec_len; i++ ){
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vc += strComb[i];
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}
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if( *((int*)strComb)!=vc )
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return -4;
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pos += 4;
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count = strComb[pos++];
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if( count>0 && count<=*num ){
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for( i=0; i<count; i++ ){
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unsigned char lenTemp = (unsigned char)strComb[pos++];
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if( lenTemp==0 || lenTemp>=MAX_STR_LEN ){
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ret = -3;
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break;
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}
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memcpy( arrMap[i][0], strComb + pos, lenTemp );
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arrMap[i][0][lenTemp] = 0;
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pos += lenTemp;
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lenTemp = (unsigned char)strComb[pos++];
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if( lenTemp<0 || lenTemp>=MAX_STR_LEN ){
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ret = -3;
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break;
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}
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else{
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if( lenTemp>0 ){
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memcpy( arrMap[i][1], strComb + pos, lenTemp );
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pos += lenTemp;
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}
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arrMap[i][1][lenTemp] = 0;
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}
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}
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}
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else{
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ret = -3;
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}
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if( ret==0 )
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*num = count;
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free( strComb );
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return ret;
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}
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#endif
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//
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//////////////////////////////////////////////////////////////////////////////////////////
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