Fix critical issues: implement chunk_decompress and fix file descriptor check in server_listen

src/shared/chunk.c

@@ -134,18 +134,93 @@ Data *chunk_compress(Chunk *chunk, int compression_level) {
 Chunk *chunk_decompress(Data *compressed_data) {
   log_message(LOG_LEVEL_DEBUG, "Starting to decompress chunk");
   Data *uncompressed_data = data_decompress(compressed_data);
-  ArrayList *files = array_list_create(file_destroy);
-  size_t *data_pointer = uncompressed_data->data;
-  while (data_pointer <
-         (size_t *)uncompressed_data->data + uncompressed_data->size) {
-    size_t path_len = data_pointer[0];
-
-    printf("%zu, testing", path_len);
-    break;
+  if (uncompressed_data == NULL) {
+    log_message(LOG_LEVEL_ERROR, "Failed to decompress chunk data");
+    return NULL;
   }
   
-  log_message(LOG_LEVEL_DEBUG, "Chunk succesfully decompressed");
-  return NULL;
+  ArrayList *files = array_list_create(file_destroy);
+  char *data_pointer = uncompressed_data->data;
+  size_t remaining_size = uncompressed_data->size;
+  
+  while (remaining_size > 0) {
+    if (remaining_size < sizeof(size_t)) {
+      log_message(LOG_LEVEL_ERROR, "Invalid chunk format: not enough data for path length");
+      array_list_destroy(files);
+      data_delete(uncompressed_data);
+      return NULL;
+    }
+    
+    size_t path_len = *(size_t *)data_pointer;
+    data_pointer += sizeof(size_t);
+    remaining_size -= sizeof(size_t);
+    
+    if (remaining_size < path_len) {
+      log_message(LOG_LEVEL_ERROR, "Invalid chunk format: not enough data for path");
+      array_list_destroy(files);
+      data_delete(uncompressed_data);
+      return NULL;
+    }
+    
+    char *path = malloc(path_len + 1);
+    if (path == NULL) {
+      perror("Could not allocate memory for file path");
+      array_list_destroy(files);
+      data_delete(uncompressed_data);
+      return NULL;
+    }
+    memcpy(path, data_pointer, path_len);
+    path[path_len] = '\0';
+    data_pointer += path_len;
+    remaining_size -= path_len;
+    
+    if (remaining_size < sizeof(size_t)) {
+      log_message(LOG_LEVEL_ERROR, "Invalid chunk format: not enough data for data size");
+      free(path);
+      array_list_destroy(files);
+      data_delete(uncompressed_data);
+      return NULL;
+    }
+    
+    size_t data_size = *(size_t *)data_pointer;
+    data_pointer += sizeof(size_t);
+    remaining_size -= sizeof(size_t);
+    
+    if (remaining_size < data_size) {
+      log_message(LOG_LEVEL_ERROR, "Invalid chunk format: not enough data for file content");
+      free(path);
+      array_list_destroy(files);
+      data_delete(uncompressed_data);
+      return NULL;
+    }
+    
+    File *file = file_create(path, data_size);
+    if (file == NULL) {
+      free(path);
+      array_list_destroy(files);
+      data_delete(uncompressed_data);
+      return NULL;
+    }
+    
+    memcpy(file->data, data_pointer, data_size);
+    data_pointer += data_size;
+    remaining_size -= data_size;
+    
+    array_list_add(files, file);
+    free(path);
+  }
+  
+  // Create the chunk from the files
+  File **file_array = (File **)array_list_to_array(files);
+  Chunk *chunk = chunk_create(file_array, array_list_size(files));
+  
+  // Clean up
+  free(file_array);
+  array_list_destroy(files);
+  data_delete(uncompressed_data);
+  
+  log_message(LOG_LEVEL_DEBUG, "Chunk successfully decompressed");
+  return chunk;
 }
 
 Data *chunk_data_create(void *data, unsigned long long data_size) {

src/shared/socket.c

@@ -61,7 +61,7 @@ void server_listen(Server *server, void (*handler)(int file_descriptor)) {
   int file_descriptor =
       accept(server->file_descriptor, (struct sockaddr *)&server->address,
              &server->address_length);
-  if (server->file_descriptor < 0) {
+  if (file_descriptor < 0) {
     perror("Could not accept the connection");
     exit(EXIT_FAILURE);
   }