Linksys WVC80N User Guide - Page 42

Appendix D CGI Commands Base-64 Encoder/Decoder Sample Codes // Standard BASE64 table // char keyStr[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; // SerComm BASE64 table char keyStr[] = "ACEGIKMOQSUWYBDFHJLNPRTVXZacegikmoqsuwybdfhjlnprtvxz0246813579=+/"; // Description: Encrypt the input data with the base64 // Input: // char i_buf[] - input buffer // Output: // char o_buf[] - output buffer // Return: // encrypted string length int encode64(char i_buf[], char o_buf[]) { char chr1 = (char)0; char chr2 = (char)0; char chr3 = (char)0; //These are the 3 bytes to be encoded int enc1 = 0; int enc2 = 0; int enc3 = 0; int enc4 = 0; //These are the 4 encoded bytes int i = 0, j = 0; //Position counter do { //Set up the loop here chr1 = i_buf[i++]; //Grab the first byte if(i < strlen(i_buf )) chr2 = i_buf[i++]; //Grab the second byte if(i < strlen(i_buf )) chr3 = i_buf[i++]; //Grab the third byte //Here is the actual base64 encode part. //There really is only one way to do it. enc1 = chr1 >> 2; enc2 = ((chr1 & 3) > 4); enc3 = ((chr2 & 15) > 6); enc4 = chr3 & 63; if(chr2 == (char)0) { enc3 = enc4 = 64; } Wireless-N Internet Home Monitoring Camera 41