ajurna/protohackersc
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Ajurna
2025-07-30 12:56:32 +01:00
parent 88fa2fa2a3
commit e87c1f74f4
6 changed files with 202 additions and 48 deletions
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108
server03.c
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@@ -30,7 +30,7 @@ int main() {
handle_args_t *args = malloc(sizeof(handle_args_t));
args->client = client;
args->connection = connection_number++;
args->connections = *connections;
args->connections = connections;
pthread_t thread;
pthread_create(&thread, nullptr, handle_connection, args);
}
@@ -46,50 +46,67 @@ void *handle_connection(void *args) {
char *message = malloc(sizeof(char)*1024);
char_array_t *data = char_array_create(1024);
send(handleArgs->client, WELCOME, sizeof(WELCOME), 0);
bytesReceived = recv(handleArgs->client, buffer, sizeof(buffer), 0);
char_array_append(data, buffer, bytesReceived);
char *username = char_array_get_until_char(data, '\n');
if (username == NULL) {
printf("{%d} Failed to parse username\n", handleArgs->connection);
connections_remove(&handleArgs->connections, handleArgs->client);
free(handleArgs);
pthread_exit(NULL);
exit(3);
}
username = trim(username);
if (!username_is_valid(username)) {
printf("{%d} Invalid username\n", handleArgs->connection);
connections_remove(&handleArgs->connections, handleArgs->client);
free(handleArgs);
pthread_exit(NULL);
exit(3);
}
pthread_mutex_lock(&mutex);
sprintf(message, "* The room contains: ");
for (int i = 0; i < handleArgs->connections.len; i++) {
strcat(message, handleArgs->connections.clients[i].username);
strcat(message, " ");
}
strcat(message, "\n");
send(handleArgs->client, message, strlen(message), 0);
pthread_mutex_unlock(&mutex);
connections_append(&handleArgs->connections, handleArgs->client, username);
sprintf(message, "* %s has entered the room\n", username);
broadcast(&handleArgs->connections, &handleArgs->client, message);
printf("{%d} Username: %s\n", handleArgs->connection, username);
char *username = malloc(sizeof(char)*1024);
while ((bytesReceived = recv(handleArgs->client, buffer, sizeof(buffer), 0)) > 0) {
printf("{%d} Client sent: |%d| \n", handleArgs->connection, bytesReceived);
char_array_append(data, buffer, bytesReceived);
char *request;
while ((request = char_array_get_until_char(data, '\n')) != NULL) {
sprintf(message, "[%s] %s\n", username, request);
switch (status) {
case CONNECTED: {
if ((username = char_array_get_until_char(data, '\n')) != NULL) {
printf("{%d} Username raw: %s\n", handleArgs->connection, username);
if (username == NULL) {
printf("{%d} Failed to parse username\n", handleArgs->connection);
closesocket(handleArgs->client);
free(handleArgs);
pthread_exit(NULL);
exit(3);
}
username = trim(username);
printf("{%d} Username after trim: %s\n", handleArgs->connection, username);
if (!username_is_valid(username)) {
printf("{%d} Invalid username\n", handleArgs->connection);
closesocket(handleArgs->client);
free(handleArgs);
pthread_exit(NULL);
exit(3);
}
pthread_mutex_lock(&mutex);
sprintf(message, "* The room contains: ");
for (int i = 0; i < handleArgs->connections->len; i++) {
strcat(message, handleArgs->connections->clients[i].username);
strcat(message, " ");
}
strcat(message, "\n");
send(handleArgs->client, message, strlen(message), 0);
pthread_mutex_unlock(&mutex);
connections_append(handleArgs->connections, handleArgs->client, username);
sprintf(message, "* %s has entered the room\n", username);
broadcast(handleArgs->connections, &handleArgs->client, message);
printf("{%d} Username: %s\n", handleArgs->connection, username);
status = IDENTIFIED;
}
break;
}
case IDENTIFIED: {
char *request;
while ((request = char_array_get_until_char(data, '\n')) != NULL) {
sprintf(message, "[%s] %s\n", username, request);
broadcast(handleArgs->connections, &handleArgs->client, message);
}
break;
}
}
memset(buffer, 0, sizeof(buffer));
}
sprintf(message, "* %s has left the room\n", username);
broadcast(handleArgs->connections, &handleArgs->client, message);
connections_remove(handleArgs->connections, handleArgs->client);
printf("{%d} Client disconnected\n", handleArgs->connection);
free(message);
free(args);
return NULL;
@@ -120,8 +137,8 @@ void connections_append(connections_t *connections, SOCKET client, char *usernam
printf("Failed to allocate memory for array\n");
}
}
connections->clients[connections->size].client = client;
connections->clients[connections->size].username = username;
connections->clients[connections->len].client = client;
connections->clients[connections->len].username = username;
connections->len = new_len;
printf("{%llu} Connection added\n", connections->size);
pthread_mutex_unlock(&mutex);
@@ -129,7 +146,7 @@ void connections_append(connections_t *connections, SOCKET client, char *usernam
};
void connections_remove(connections_t *connections, SOCKET client) {
if (connections == NULL) {
if (connections == NULL || connections->clients == NULL) {
exit(1);
}
pthread_mutex_lock(&mutex);
@@ -141,15 +158,20 @@ void connections_remove(connections_t *connections, SOCKET client) {
for (int j = i; j < connections->size; j++) {
connections->clients[j] = connections->clients[j+1];
}
connections->size--;
connections->len--;
printf("{%llu} Connection removed\n", connections->size);
pthread_mutex_unlock(&mutex);
return;
}
}
pthread_mutex_unlock(&mutex);
printf("{%llu} Connection not found\n", connections->size);
}
void broadcast(const connections_t *connections, const SOCKET *source, const char *message) {
if (connections == NULL || connections->clients == NULL) {
exit(1);
}
pthread_mutex_lock(&mutex);
for (size_t i = 0; i < connections->size; i++) {
if (connections->clients[i].client != *source) {