//------------------------- verica informacoes de login -----------------------
void login(int clientsocket)
{
msg_t *msg;
msg = (msg_t *) malloc (sizeof (msg_t));
recv(clientsocket, msg, sizeof(msg_t), 0);
int count;
// compara informacoes de login com a lista de usuarios (users)
for (count = 0; count < 3; count++)
{
if (!strcmp(msg->user, users[count][0]) &&
!strcmp(msg->msgbuff, users[count][1]))
{
// login aceito, informa o cliente
printf("Usuario '%s' conectou-se.\n", msg->user);
strcpy(conusers[conclients], msg->user);
strcpy(msg->user, "SERVER");
strcpy(msg->msgbuff, "Login aceito, conexao estabelecida.");
msg->msgtype = Login;
send(clientsocket, msg, sizeof(msg_t), 0);
//informa os demais clientes conectados sobre o novo usuario
msg->msgtype = Message;
strcpy(msg->msgbuff, "Usuario '");
strcat(msg->msgbuff, conusers[conclients]);
strcat(msg->msgbuff, "' conectou-se.");
sendtoall(msg);
// adiciona o o novo cliente a lista de sockets
sockets[conclients].fd = clientsocket;
conclients++;
return;
}
}
// login recusado, informa o cliente
strcpy(msg->user, "SERVER");
strcpy(msg->msgbuff, "Nome de usuario ou senha invalido, conexao rejeitada.");
msg->msgtype = Logout;
send(clientsocket, msg, sizeof(msg_t), 0);
return;
}
//----------------------- funcao principal do programa ------------------------
int main(int argc, char *argv[])
{
// usa porta predefinida
port = SERVERPORT;
// configura socket do servidor
setup_server();
// inicializa estrutura para verificacao de eventos de leitura no socket
int pollret;
for (pollret = 0; pollret < MAXCONCLIENTS; pollret++)
{
sockets[pollret].fd = -1;
sockets[pollret].events = POLLIN | POLLPRI;
}
conclients = 0;
// thread p aguardar e estabelecer novas conexoes...
if (pthread_create(&thread, NULL, acceptconnections, 0))
fatal("thread_creation: %s.", strerror(errno));
// recebe mensagens dos clientes e as reenvia para todos os clientes
// conectados, enquanto houver clientes conectados
msg_t *msg;
msg = (msg_t *) malloc (sizeof (msg_t));
int count;
do {
// aguarda por evento nos sockets
while (!conclients || !(pollret = poll(sockets, conclients, 1000)));
// verifica os eventos ocorridos nos sockets dos clientes
for (count = 0; count < conclients; count++)
{
msg->msgtype = Message;
// se ha conteudo a ser lido no socket
if ( (sockets[count].revents & POLLIN) ||
(sockets[count].revents & POLLPRI))
{
// recebe msg do cliente e reenvia a todos
recv(sockets[count].fd, msg, sizeof(msg_t), 0);
if (msg->msgtype != Logout)
{
printf("%s envia: %s\n", msg->user, msg->msgbuff);
sendtoall(msg);
}
}
// se cliente solicitou logout ou ocorreu erro com seu socket
if ( (sockets[count].revents & POLLHUP) ||
(sockets[count].revents & POLLNVAL) ||
msg->msgtype == Logout )
{
// gera msg para avisar sobre a saida do usuario
printf("Usuario '%s' desconectou-se.\n", conusers[count]);
strcpy(msg->user, "SERVER");
strcpy(msg->msgbuff, "Usuario '");
strcat(msg->msgbuff, conusers[count]);
strcat(msg->msgbuff, "' desconectou-se.");
msg->msgtype = Message;
// remove usuario
removeclientat(count);
// informa os demais da saida do usuario
sendtoall(msg);
// cliente desconectado, retorna o contador
count--;
// se nao ha clientes conectados, finaliza o servidor
if (!conclients)
conclients = -1;
}
}
} while (conclients != -1);
// encerra o socket do servidor
close(serversock);
return 0;
}
int main(int argc, char **argv) {
int sockfd, userlen;
printf ("********* Welcome to mini chat cote client *********\n");
printf( " Les commande sont : \n"
" login puis nom utilisateur pour connecter au serveur \n"
" pour envoyer un message a un client taper : send utilisateur puis message \n"
" quiter \n\n\n");
printf("-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*Client*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-\n");
memset(&me, 0, sizeof (struct USER));
while (gets(comande)) {
if (!strncmp(comande, "quiter", 4)) {
logout(&me);
break;
}
/* if (!strncmp(comande, "help", 4)) {
FILE *fin = fopen("help.txt", "r");
if (fin != NULL) {
while (fgets(comande, LINEBUFF - 1, fin)) puts(comande);
fclose(fin);
} else {
fprintf(stderr, "Help file not found...\n");
}
}*/ else if (!strncmp(comande, "login", 5)) {
char *ptr = strtok(comande, " ");
ptr = strtok(0, " ");
memset(me.user, 0, sizeof (char) * USERLEN);
if (ptr != NULL) {
userlen = strlen(ptr);
if (userlen > USERLEN) ptr[USERLEN] = 0;
strcpy(me.user, ptr);
} else {
strcpy(me.user, "Anonymous");
}
login(&me);
} else if (!strncmp(comande, "user", 5)) {
char *ptr = strtok(comande, " ");
ptr = strtok(0, " ");
memset(me.user, 0, sizeof (char) * USERLEN);
if (ptr != NULL) {
userlen = strlen(ptr);
if (userlen > USERLEN) ptr[USERLEN] = 0;
strcpy(me.user, ptr);
setuser(&me);
}
} else if (!strncmp(comande, "send", 5)) {
char *ptr = strtok(comande, " ");
char temp[USERLEN];
ptr = strtok(0, " ");
memset(temp, 0, sizeof (char) * USERLEN);
if (ptr != NULL) {
userlen = strlen(ptr);
if (userlen > USERLEN) ptr[USERLEN] = 0;
strcpy(temp, ptr);
while (*ptr) ptr++;
ptr++;
while (*ptr <= ' ') ptr++;
sendtouser(&me, temp, ptr);
}
} else if (!strncmp(comande, "send", 4)) {
sendtoall(&me, &comande[5]);
} else if (!strncmp(comande, "logout", 6)) {
logout(&me);
} else fprintf(stderr, "Unknown comande...\n");
}
return 0;
}
int client(int argc, char *argv[]) {
int sockfd, aliaslen;
int portno = atoi(argv[2]);
portnom=portno;
ipcon = gethostbyname(argv[1]);
memset(&me, 0, sizeof(struct USER));
//Komendy
while(gets(option)) {
if(!strncmp(option, "exit", 4)) {
logout(&me);
break;
}
if(!strncmp(option, "help", 4)) {
FILE *fin = fopen("help.txt", "r");
if(fin != NULL) {
while(fgets(option, LINEBUFF-1, fin)) puts(option);
fclose(fin);
}
else {
fprintf(stderr, "Plik pomocy nie znaleziony...\n");
}
}
else if(!strncmp(option, "login", 5)) {
char *ptr = strtok(option, " ");
ptr = strtok(0, " ");
memset(me.alias, 0, sizeof(char) * ALIASLEN);
if(ptr != NULL) {
aliaslen = strlen(ptr);
if(aliaslen > ALIASLEN) ptr[ALIASLEN] = 0;
strcpy(me.alias, ptr);
}
else {
strcpy(me.alias, "Anonymous");
}
login(&me);
}
else if(!strncmp(option, "alias", 5)) {
char *ptr = strtok(option, " ");
ptr = strtok(0, " ");
memset(me.alias, 0, sizeof(char) * ALIASLEN);
if(ptr != NULL) {
aliaslen = strlen(ptr);
if(aliaslen > ALIASLEN) ptr[ALIASLEN] = 0;
strcpy(me.alias, ptr);
setalias(&me);
}
}
else if(!strncmp(option, "whisp", 5)) {
char *ptr = strtok(option, " ");
char temp[ALIASLEN];
ptr = strtok(0, " ");
memset(temp, 0, sizeof(char) * ALIASLEN);
if(ptr != NULL) {
aliaslen = strlen(ptr);
if(aliaslen > ALIASLEN) ptr[ALIASLEN] = 0;
strcpy(temp, ptr);
while(*ptr) ptr++; ptr++;
while(*ptr <= ' ') ptr++;
sendtoalias(&me, temp, ptr);
}
}
else if(!strncmp(option, "send", 4)) {
sendtoall(&me, &option[5]);
}
else if(!strncmp(option, "logout", 6)) {
logout(&me);
}
else fprintf(stderr, "Zla komenda...\n");
}
return 0;
}
int main(int argc, char **argv) {
int sockfd, userlen;
memset(&me, 0, sizeof(struct USER));
while(gets(option)) {
if(!strncmp(option, "exit", 4)) {
logout(&me);
break;
}
else if(!strncmp(option, "login", 5)) {
char *ptr = strtok(option, " ");
ptr = strtok(0, " ");//set ptr as username
memset(me.user, 0, sizeof(char) * userLEN);
if(ptr != NULL) {
userlen = strlen(ptr);//strlen:calcule la longeur du chaine de caractere
if(userlen > userLEN) ptr[userLEN] = 0;
strcpy(me.user, ptr);//copy ptr in me.user
}
else {
strcpy(me.user, "default");//copy default to me.user
}
login(&me);
}
else if(!strncmp(option, "change", 6)) {
char *ptr = strtok(option, " ");
ptr = strtok(0, " ");
memset(me.user, 0, sizeof(char) * userLEN);
if(ptr != NULL) {
userlen = strlen(ptr);
if(userlen > userLEN) ptr[userLEN] = 0;
strcpy(me.user, ptr);
setuser(&me);
}
}
else if(!strncmp(option, "specf", 5)) {
char *ptr = strtok(option, " ");
char temp[userLEN];
ptr = strtok(0, " ");
memset(temp, 0, sizeof(char) * userLEN);
if(ptr != NULL) {
userlen = strlen(ptr);
if(userlen > userLEN) ptr[userLEN] = 0;
strcpy(temp, ptr);
while(*ptr) ptr++; ptr++;
while(*ptr <= ' ') ptr++;
sendtoclient(&me, temp, ptr);
}
}
else if(!strncmp(option, "sfile", 5)) {
char *ptr = strtok(option, " ");
char temp[userLEN];
char *buff;
ptr = strtok(0, " ");
memset(temp, 0, sizeof(char) * userLEN);
if(ptr != NULL) {
userlen = strlen(ptr);
if(userlen > userLEN) ptr[userLEN] = 0;
strcpy(temp, ptr);
while(*ptr) ptr++; ptr++;
while(*ptr <= ' ') ptr++;
sendfile(&me, temp, ptr,buff);
}
}
else if(!strncmp(option, "encrypt", 7)) {
char *ptr = strtok(option, " ");
char temp[userLEN];
ptr = strtok(0, " ");
memset(temp, 0, sizeof(char) * userLEN);
if(ptr != NULL) {
userlen = strlen(ptr);
if(userlen > userLEN) ptr[userLEN] = 0;
strcpy(temp, ptr);
while(*ptr) ptr++; ptr++;
while(*ptr <= ' ') ptr++;
sendencrypt(&me, temp, ptr);
}
}
else if(!strncmp(option, "broadcast", 9)) {
sendtoall(&me, &option[9]);
}
else if(!strncmp(option, "list", 4)) {
}
else if(!strncmp(option, "logout", 6)) {
logout(&me);
}
else fprintf(stderr, "Unknown option...\n");
}
return 0;
}
