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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
char* replaceHTML(char* str){
printf("Replaceing:%s\n",str);
char* nstr = malloc((sizeof(char)*strlen(str)) + 1);
if(nstr == NULL){
printf("%s%c%c\n","Content-Type:text/html;charset=iso-8859-1",13,10);
printf("Failed to allocate memory!\n");
}
int strp = 0;
int nstrp = 0;
while(str[strp] != '\0'){
//printf("Strp=%d nstrp=%d\n",strp,nstrp);
if(str[strp] == '+'){
nstr[nstrp] = ' ';
strp++;
nstrp++;
}else if(str[strp] == '%'){
//printf("Hit encodeing!\n");
int hex = 0;
sscanf(str+strp,"%%%2x",&hex);
//printf("Was:%c(%d)\n",(char)hex,hex);
if(hex == 0x0D){
strp+=3;
continue;
}
if(hex == 0x0A){
nstr[nstrp] = '\\';
nstr[nstrp+1] = 'n';
nstrp+=2;
strp+=3;
continue;
}
nstr[nstrp] = (char)hex;
nstrp++;
strp+=3;
}else if(str[strp] == '\n'){
nstr[nstrp] = '\\';
nstr[nstrp+1] = 'n';
nstrp+=2;
strp++;
}else{
nstr[nstrp] = str[strp];
nstrp++;
strp++;
}
}
nstr[nstrp] = '\0';
printf("Done, str is now:%s\n",nstr);
return nstr;
}
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;
}
char* useridhash(char* str){
printf("useridhash\n");
char* hash = calloc(sizeof(char)*20,sizeof(char));
int i = (int)str[0];
int len = strlen(str);
int tloop = i*20;
unsigned int hashp = 0;
unsigned int strp = 0;
i = 0;
while(i < tloop){
//printf("i:%d hashp:%u strp:%u tloop:%d\n",i,hashp,strp,tloop);
char tchar = str[strp%len];
hash[hashp%20] += str[strp%len];
str[strp%len]+=1;
hashp+=(int)tchar;
strp+=(int)(hashp*hashp);
i++;
}
i = 0;
//printf("Before characterizeing the hash, it was: %s\n",hash);
while(i < 20){
//printf("Normalizeing %c(%u) as %c(%u)\n",hash[i],(unsigned int)hash[i],(hash[i] % 92) + 32,(hash[i] % 92) + 32);
unsigned int hashnum = hash[i];
unsigned int modedhashnum = hashnum % 92;
//printf("hashnum was %u, after mod it is:%u\n",hashnum,modedhashnum);
hash[i] = modedhashnum + 32;
i++;
}
printf("Resulting hash was:%s\n",hash);
return hash;
}
int main(){
char* data = getenv("QUERY_STRING");
//char data[20] = "?id=1";
char* hardip = getenv("REMOTE_ADDR");
//char data[] = "name=Apickx&id=test&comment=Can+I+comment+on+other+bugs%3F&captcha=clean+night&bugid=7";
char name[15];
char userid[20];
char comment[2048];
char captcha[30];
char bugid[5];
char* iname = strtok(data,"&");
char* iuserid = strtok(NULL,"&");
char* icomment = strtok(NULL,"&");
char* icaptcha = strtok(NULL,"&");
char* ibugid = strtok(NULL,"&");
sscanf(iname,"name=%s",name);
sscanf(iuserid,"id=%s",userid);
sscanf(icomment,"comment=%s",comment);
sscanf(icaptcha,"captcha=%s",captcha);
sscanf(ibugid,"bugid=%s",bugid);
/*
char* name = "Apickx";
char* userid = "ThestID";
char* comment = "This+Is+My+Comment";
char* captcha = "teeny-tiny+currency";
char* bugid = "1";
*/
//printf("<p>name:%s<p>userid:%s<p>comment:%s<p>captcha:%s<p>bugid:%s",name,userid,comment,captcha,bugid);
//Check captcha
char captchapath[100];
char* captchadecoded = replaceHTML(captcha);
sprintf(captchapath,"../ws2a/captchas/%s.txt",captchadecoded);
printf("Generated path...\n");
FILE* captchafile = fopen(captchapath,"r");
if(captchafile == NULL){
printf("%s%c%c\n","Content-Type:text/html;charset=iso-8859-1",13,10);
printf("Captcha incorrect");
return;
}
//Hash of "teeny-tiny currency" is 2053680550
unsigned long inputhash = hash(captchadecoded);
free(captchadecoded);
unsigned long filehash = 0;
fscanf(captchafile,"%lu",&filehash);
if(filehash != inputhash){
printf("%s%c%c\n","Content-Type:text/html;charset=iso-8859-1",13,10);
printf("Captcha incorrect");
return;
}
fclose(captchafile);
char command[100];
sprintf(command,"rm \"%s\"",captchapath);
system(command);
printf("After first command\n");
sprintf(command,"rm \"../ws2a/captchas/%lu.png\"",inputhash);
system(command);
printf("After second command\n");
//Add comment to bug file
char filepath[100];
sprintf(filepath,"../ws2a/bugs/%s",bugid);
FILE* bugfile = fopen(filepath,"a");
if(bugfile == NULL){
printf("%s%c%c\n","Content-Type:text/html;charset=iso-8859-1",13,10);
printf("<p>Unable to find bug!");
return;
}
char* dname = replaceHTML(name);
char* duid = useridhash(userid);
char* dcomment = replaceHTML(comment);
//printf("%s%c%c\n","Content-Type:text/html;charset=iso-8859-1",13,10);
printf("Location: ../ws2a/bugview.html?id=%s\n\n",bugid);
//printf("<p>data:%s",data);
//printf("<p>comment:%s<p>dcomment:%s",comment,dcomment);
//printf("Everything ok, inserting comment!");
fprintf(bugfile,"\n%s\n%s\n%s\n",dname,duid,dcomment);
fclose(bugfile);
free(dname);
free(duid);
free(dcomment);
return 0;
}
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