web-login-session-name.c

00001 #include "web-site-name.h"
00002 
00003 #define SESSION_LIFE 10 * 365 * 24 * 60 * 60
00004 
00005 //Do not use ' ', ';', '=' as they are part of the cookie protocol: name1=value1; name2=value2; name3=value3 etc
00006 static char sessionName[9]; //Limit the name to 8 characters (plus terminating zero) to keep things quick
00007 
00008 char* WebLoginSessionNameGet()
00009 {
00010     return sessionName;
00011 }
00012 
00013 void WebLoginSessionNameCreate()
00014 {
00015     //Make the session name from the site name - eg  "Heating" and "GPS Clock" will be "heat_sid" and "gpsc_sid"
00016     int i = 0;
00017     int j = 0;
00018     while (1)
00019     {
00020         if (i >= sizeof(sessionName) - 4 - 1) break; //Leave room for the "_sid" and the terminating NUL character
00021         char c = WEB_SITE_NAME[j++];
00022         if (!c) break;                               //Stop if run out of site name
00023         if (c >= 'A' && c <= 'Z') c |= 0x20;         //Make lower case
00024         if (c < 'a' || c > 'z') continue;            //Skip anything other than letters
00025         sessionName[i++] = c;                        //Add the first characters of the site name for which there is room
00026     }
00027     for (int k = 0; k < 4; k++)                      //Add "_sid"
00028     {
00029         sessionName[i++] = "_sid"[k];
00030     }
00031     sessionName[i] = 0;                              //Add the terminating NUL character
00032 }
00033 
00034 int WebLoginSessionNameLife()
00035 {
00036     return SESSION_LIFE;
00037 }