int main(int argc, char** argv)
{
if(checkArgc(argc, 5, "You must supply a VPN IP, VPN Port, Server IP, and Server Port!"))
{
return 1;
}
int vpnPort = parseAndCheckPort(argv[2]);
#ifdef Debug
printf("VPN Port: %d\r\n", vpnPort);
#endif
int msglen = strlen(argv[3]) + strlen(argv[4]) + 4;
int x;
char *buffer = mallocAndCheck(sizeof(char)*msglen);
for(x = 0; x < msglen; x++)
buffer[x] = 0;
socklen_t addrlen = (socklen_t)sizeof(struct sockaddr_storage);
int udpSocket = bindUDPSocket();
struct sockaddr_in vpnaddr;
vpnaddr.sin_family = AF_INET;
vpnaddr.sin_port = htons(vpnPort);
// Parse the arg given to us for the IP
if(inet_pton(AF_INET, argv[1], &(vpnaddr.sin_addr)) <= 0)
{
write(2, "Failed to parse IP Address!\r\n", 29);
return -1;
}
#ifdef Debug
printf("Server Address: %s\r\n", inet_ntoa(vpnaddr.sin_addr));
#endif
strcpy(buffer, argv[3]);
strcat(buffer, "\r\n");
strcat(buffer, argv[4]);
strcat(buffer, "\r\n");
if(sendto(udpSocket, buffer, msglen, 0, (struct sockaddr *)&vpnaddr, addrlen) <= 0)
{
perror("Sendto");
return 1;
}
printf("Sent:\r\n%s\r\n", buffer);
memset(buffer, 0, 1024);
while(recvfrom(udpSocket, buffer, 1024, 0, (struct sockaddr *)&vpnaddr, &addrlen) <= 0)
{ }
printf("VPN Port: %d\r\n", numberFromString(buffer));
}
int main(int argc, char **argv)
{
checkArgc(argc);
studentsWaiting = inputValidation(argv[1]);
officeLimit = inputValidation(argv[2]);
pthread_mutex_init(&office_mutex, NULL);
pthread_mutex_init(&student_mutex, NULL);
pthread_mutex_init(&professor_mutex, NULL);
pthread_mutex_init(&student_question_mutex, NULL);
pthread_cond_init(&professor_complete_cv, NULL);
pthread_cond_init(&student_question_cv, NULL);
pthread_cond_init(&office_capacity_cv, NULL);
executeThread(studentsWaiting);
return 0;
}
