NewLogin

#include <stdio.h>
#include <string.h>

int main(void)
{
	printf("Content-type:text/html\n\n");
	printf("<html><body>");

	int validLogin=0;
	int ch = 1;
	int numberOfLines = 0;
	int counter = 0;

	char *enteredUsername;
	char *enteredPassword;
	char holding[100];

	char username[30];
	char password[12];
	fgets(username, 30, stdin);
	fgets(password, 12, stdin);
	strcpy(holding, username);
	strcat(holding, password);


	char *token;
	char *secondToken;


	token = strtok(holding, "=");
	enteredUsername = strtok(NULL, "&");
	printf("%sa", enteredUsername);
	strcat(enteredUsername, "\0");
	secondToken = strtok(NULL, "=");
	enteredPassword = strtok(NULL, "\0");
	printf("%sa", enteredPassword);


	char existingUsers[20];
	char existingPasswords[12];

	FILE *users = fopen("users.txt", "r");

	do
	{
		ch = fgetc(users);
		if(ch == '\n'){
			numberOfLines++;
		}
	}while (ch != EOF);
	numberOfLines++;

	if(ch != '\n' && numberOfLines != 0){
		numberOfLines++;
	}

	rewind(users);
    fgets(existingUsers, 20, users);


	while(counter < numberOfLines)
	{
			if((strcmp(enteredUsername, existingUsers))==0)
			{
				printf("Username is true!");
				fgets(existingPasswords, 20, users);
				if(strcmp(enteredPassword, existingPasswords)==0)
				{
					validLogin = 1;
					break;
				}
				else
				{
					validLogin = 0;
					break;
				}
			}

			if(counter == (numberOfLines-1))
			{
				validLogin = 0;
			}
        fgets(existingUsers, 20, users);
		counter++;
	}

	if (validLogin == 1)
	{
			printf("Successful Login! Continue Here.");
	}
	else if(validLogin == 0)
	{
		printf("Unsuccesful Login </br>");
		printf("<a href= \"http://cgi.cs.mcgill.ca/~ebruch/loginandregister.html\" target=\"blank\"> Click Here to Try Again </a>");
	}
	return(0);

printf("</body></html>");
}