From dd95bc4a049fc1157e1b33343de217761d71d7ab Mon Sep 17 00:00:00 2001
From: Alexander Pickering <alexandermpickering@gmail.com>
Date: Tue, 10 May 2016 16:25:11 -0400
Subject: moved captcha over to a hash-generated system

---
 ws2a/gencaptcha.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

(limited to 'ws2a')

diff --git a/ws2a/gencaptcha.c b/ws2a/gencaptcha.c
index 5d1bdb6..8713a1a 100644
--- a/ws2a/gencaptcha.c
+++ b/ws2a/gencaptcha.c
@@ -48,6 +48,17 @@ void createRandomWords(char* buf){
   buf[pos] = '\0';
 }
 
+
+unsigned long hash(unsigned char *str){
+    unsigned long hash = 5381;
+    int c;
+
+    while (c = *str++)
+        hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
+
+    return hash;
+}
+
 int main(){
 
   srand(time(NULL));
@@ -58,16 +69,19 @@ int main(){
   int barraldis2 = rand()%10;
   int arcdis = (rand()%99)+1;
   char command[1024];
-  sprintf(command,"convert -background white -fill black -pointsize 48 label:\"%s\" \"../ws2a/captchas/%s.png\"",randwords,randwords);
+  unsigned long rhash = hash(randwords);
+  sprintf(command,"convert -background white -fill black -pointsize 48 label:\"%s\" \"../ws2a/captchas/%lu.png\"",randwords,rhash);
   system(command);
-  sprintf(command,"convert \"../ws2a/captchas/%s.png\" -distort Barrel \"0.0%d 0.0 0.0%d\" \"../ws2a/captchas/%s.png\"",randwords,barraldis1,barraldis2,randwords);
+  sprintf(command,"convert \"../ws2a/captchas/%lu.png\" -distort Barrel \"0.0%d 0.0 0.0%d\" \"../ws2a/captchas/%lu.png\"",rhash,barraldis1,barraldis2,rhash);
   system(command);
-  sprintf(command,"convert \"../ws2a/captchas/%s.png\" -virtual-pixel White -distort Arc %d \"../ws2a/captchas/%s.png\"",randwords,arcdis,randwords);
+  sprintf(command,"convert \"../ws2a/captchas/%lu.png\" -virtual-pixel White -distort Arc %d \"../ws2a/captchas/%lu.png\"",rhash,arcdis,rhash);
   system(command);
 
+  printf("%lu",rhash);
+  /*
   FILE* imgfile;
   char filepath[100];
-  sprintf(filepath,"../ws2a/captchas/%s.png",randwords);
+  sprintf(filepath,"../ws2a/captchas/%lu.png",hash(randwords));
   //printf("Filepath:%s",filepath);
   imgfile = fopen(filepath,"rb");
   if(imgfile == NULL){
-- 
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