Utils.c

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#define CONFIG_FILE "users.txt"
#define MAX_LINE 500
#define MAX_CONTENT 10000
#define EMAIL_CONTENT 4000
#define ATTACH_CONTENT 5000
#define SMALL_STRING 50
#define MAX_STRING 250
//#define CONFIG_FILE "/Users/chinnababusadam/Documents/UHCL/Test Function/Test Function/users.txt"

int CheckIfUserExist(char *userName) {
	FILE *fp;
	char _userName[SMALL_STRING];
	char readLine[MAX_LINE];
	fp = fopen(CONFIG_FILE, "r+");
	if (fp) {
		while (fgets(readLine, MAX_LINE, fp) != NULL) {
			//printf("%s",readLine);
			printf("Reach here\n");

			sscanf(readLine, "%[^;]", _userName);
			if (strcmp(userName, _userName) == 0) {
				fclose(fp);
				return 1;
			}
		}
		fclose(fp);
		return 0;
	}
	return 0;
}

char* IsClientAuthenticated(char *userName, char *password) {
	FILE *fp;
	fp = fopen(CONFIG_FILE, "r+");
	char _userName[SMALL_STRING];
	char _password[SMALL_STRING];
	char _firstName[SMALL_STRING];
	char _lastName[SMALL_STRING];
	char readLine[MAX_LINE];

	char *returnMessage = malloc(sizeof(char) * MAX_LINE);

	while (fgets(readLine, MAX_LINE, fp) != NULL) {
		//printf("%s",readLine);
		printf("Reach here\n");

		sscanf(readLine, "%[^;];%[^;];%[^;];%[^;]", _userName, _password,
				_firstName, _lastName);
		printf("Line - user: %s , pass: %s , first: %s, last: %s\n", _userName,
				_password, _firstName, _lastName);
		if ((strcmp(_userName, userName) == 0)
				&& strcmp(password, _password) == 0) {
			fclose(fp);
			//snprintf(returnMessage, MAX_LINE, "%d:%s:%s", 1,_firstName,_lastName);
			sprintf(returnMessage, "%d:%s:%s", 1, _firstName, _lastName);
			return returnMessage;
		}
	}
	fclose(fp);
	return "NONE";
}

int ClientRegistration(char *userName, char *pwd, char *firstName,
		char *lastName) {
	printf("Server GOT: %s;%s;%s;%s\n", userName, pwd, firstName, lastName);
	if (!CheckIfUserExist(userName)) {

		char fileName[50];
		//snprintf(fileName,100,"%s.txt",userName);
		sprintf(fileName, "%s.txt", userName);
		printf("File Name = %s\n", fileName);
		FILE *file = fopen(CONFIG_FILE, "ab+");
		if (file) {
			printf("Before save: %s;%s;%s;%s;%s\n", userName, pwd, firstName,
					lastName, fileName);
			fprintf(file, "%s;%s;%s;%s;%s\n", userName, pwd, firstName,
					lastName, fileName);
			fclose(file);
			FILE *clientFile = fopen(fileName, "ab+");
			if (clientFile) {
				fclose(clientFile);
				return 1;
			} else {
				fclose(clientFile);
				return 0;
			}
		} else {
			fclose(file);
			return 0;
		}

	} else {
		return 0;
	}
}

void doProcessEmailMessage(char *messageContent) {
	char subject[SMALL_STRING];
	char from[SMALL_STRING];
	char senderEMail[SMALL_STRING];
	//char firstName[SMALL_STRING];
	//char lastName[SMALL_STRING];
	char toName[SMALL_STRING];
	char sendTime[SMALL_STRING];
	char attachment[ATTACH_CONTENT];
	char emailContent[EMAIL_CONTENT];
	int count;
	printf("%s", messageContent);
	count =
			sscanf(messageContent,
					"%s EmailSubject: %[^#]#EmailContent: %[^#]#Attachment: %[^#]#ToName: %[^#]#SendTime: %[^#]#FromName: %[^'\0']",
					senderEMail, subject, emailContent, attachment, toName,
					sendTime, from);
	printf("Count: %d\n", count);
	printf("%s\n", subject);
	printf("%s\n", emailContent);
	printf("%s\n", attachment);
	printf("%s\n", toName);
	printf("%s\n", sendTime);
	printf("%s\n", from);

	FILE *file = fopen(strcat(toName, ".txt"), "a+");
	if (file) {
		fprintf(file,
				"~Un-Read\nFrom: %s\nSender Email: %s\nDate: %s\nSubject: %s\nContent: %s\nAttachment: %s\n#END\n",
				from, senderEMail, sendTime, subject, emailContent, attachment);
		fclose(file);
	} else {
		printf("Cannot find file %s", toName);
	}
}