Mihail Stoyanov / HTTPServer

My fork of the HTTPServer (working)

Dependents:   DGWWebServer LAN2

Core/arch/iputil.c@0:7a64fbb4069d, 2012-08-06 (annotated)

Committer:
screamer
Date:
Mon Aug 06 09:23:14 2012 +0000
Revision:
0:7a64fbb4069d
[mbed] converted /DGWWebServer/HTTPServer

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:7a64fbb4069d 1 #include "iputil.h"
screamer 0:7a64fbb4069d 2
screamer 0:7a64fbb4069d 3 unsigned int base64enc_len(const char *str) {
screamer 0:7a64fbb4069d 4 return (((strlen(str)-1)/3)+1)<<2;
screamer 0:7a64fbb4069d 5 }
screamer 0:7a64fbb4069d 6
screamer 0:7a64fbb4069d 7 void base64enc(const char *input, unsigned int length, char *output) {
screamer 0:7a64fbb4069d 8 static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
screamer 0:7a64fbb4069d 9 unsigned int c, c1, c2, c3;
screamer 0:7a64fbb4069d 10 for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
screamer 0:7a64fbb4069d 11 c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
screamer 0:7a64fbb4069d 12 c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
screamer 0:7a64fbb4069d 13 c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
screamer 0:7a64fbb4069d 14
screamer 0:7a64fbb4069d 15 c = ((c1 & 0xFC) >> 2);
screamer 0:7a64fbb4069d 16 output[j+0] = base64[c];
screamer 0:7a64fbb4069d 17 c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
screamer 0:7a64fbb4069d 18 output[j+1] = base64[c];
screamer 0:7a64fbb4069d 19 c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
screamer 0:7a64fbb4069d 20 output[j+2] = (length>i+1)?base64[c]:'=';
screamer 0:7a64fbb4069d 21 c = (c3 & 0x3F);
screamer 0:7a64fbb4069d 22 output[j+3] = (length>i+2)?base64[c]:'=';
screamer 0:7a64fbb4069d 23 }
screamer 0:7a64fbb4069d 24 output[(((length-1)/3)+1)<<2] = '\0';
screamer 0:7a64fbb4069d 25 }