Rod Coleman / NetServSB2

Netservices modded to read fragmented HTTP respsonse/payload from special purpose server - 180 bytes only

services/http/util/base64.cpp@0:850eacf3e945, 2011-09-08 (annotated)

Committer:
RodColeman
Date:
Thu Sep 08 10:48:09 2011 +0000
Revision:
0:850eacf3e945
revised fixed length to 178 bytes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:850eacf3e945 1
RodColeman 0:850eacf3e945 2 /*
RodColeman 0:850eacf3e945 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
RodColeman 0:850eacf3e945 4
RodColeman 0:850eacf3e945 5 Permission is hereby granted, free of charge, to any person obtaining a copy
RodColeman 0:850eacf3e945 6 of this software and associated documentation files (the "Software"), to deal
RodColeman 0:850eacf3e945 7 in the Software without restriction, including without limitation the rights
RodColeman 0:850eacf3e945 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
RodColeman 0:850eacf3e945 9 copies of the Software, and to permit persons to whom the Software is
RodColeman 0:850eacf3e945 10 furnished to do so, subject to the following conditions:
RodColeman 0:850eacf3e945 11
RodColeman 0:850eacf3e945 12 The above copyright notice and this permission notice shall be included in
RodColeman 0:850eacf3e945 13 all copies or substantial portions of the Software.
RodColeman 0:850eacf3e945 14
RodColeman 0:850eacf3e945 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
RodColeman 0:850eacf3e945 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
RodColeman 0:850eacf3e945 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
RodColeman 0:850eacf3e945 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
RodColeman 0:850eacf3e945 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
RodColeman 0:850eacf3e945 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
RodColeman 0:850eacf3e945 21 THE SOFTWARE.
RodColeman 0:850eacf3e945 22 */
RodColeman 0:850eacf3e945 23
RodColeman 0:850eacf3e945 24 #include "base64.h"
RodColeman 0:850eacf3e945 25 //Originaly from Rolf's iputil.c
RodColeman 0:850eacf3e945 26
RodColeman 0:850eacf3e945 27 #ifdef __cplusplus
RodColeman 0:850eacf3e945 28 extern "C" {
RodColeman 0:850eacf3e945 29 #endif
RodColeman 0:850eacf3e945 30
RodColeman 0:850eacf3e945 31 #include <string.h>
RodColeman 0:850eacf3e945 32
RodColeman 0:850eacf3e945 33 unsigned int base64enc_len(const char* str) {
RodColeman 0:850eacf3e945 34 return (((strlen(str)-1)/3)+1)<<2;
RodColeman 0:850eacf3e945 35 }
RodColeman 0:850eacf3e945 36
RodColeman 0:850eacf3e945 37 void base64enc(const char *input, unsigned int length, char *output) {
RodColeman 0:850eacf3e945 38 static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
RodColeman 0:850eacf3e945 39 unsigned int c, c1, c2, c3;
RodColeman 0:850eacf3e945 40 for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
RodColeman 0:850eacf3e945 41 c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
RodColeman 0:850eacf3e945 42 c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
RodColeman 0:850eacf3e945 43 c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
RodColeman 0:850eacf3e945 44
RodColeman 0:850eacf3e945 45 c = ((c1 & 0xFC) >> 2);
RodColeman 0:850eacf3e945 46 output[j+0] = base64[c];
RodColeman 0:850eacf3e945 47 c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
RodColeman 0:850eacf3e945 48 output[j+1] = base64[c];
RodColeman 0:850eacf3e945 49 c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
RodColeman 0:850eacf3e945 50 output[j+2] = (length>i+1)?base64[c]:'=';
RodColeman 0:850eacf3e945 51 c = (c3 & 0x3F);
RodColeman 0:850eacf3e945 52 output[j+3] = (length>i+2)?base64[c]:'=';
RodColeman 0:850eacf3e945 53 }
RodColeman 0:850eacf3e945 54 output[(((length-1)/3)+1)<<2] = '\0';
RodColeman 0:850eacf3e945 55 }
RodColeman 0:850eacf3e945 56
RodColeman 0:850eacf3e945 57 #ifdef __cplusplus
RodColeman 0:850eacf3e945 58 }
RodColeman 0:850eacf3e945 59 #endif
RodColeman 0:850eacf3e945 60