Started writing the management program.

src/entry.c

@@ -0,0 +1,70 @@
+#include "entry.h"
+
+#include "sandbox.h"
+#include "utils.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+char* get_entries_path(void) {
+	return format("%s/%s", MASTER_DIRECTORY, ENTRIES_DIRECTORY);
+}
+
+bool is_valid_entry_name(const char* name) {
+	if (name == NULL)
+		return false;
+
+	// Check that the name is not empty
+	size_t length = strlen(name);
+	if (length == 0)
+		return false;
+
+	// Check that the name does not contain /
+	for (size_t i = 0; i < length; i++)
+		if (name[i] == '/')
+			return false;
+
+	// Check that the name is not . or ..
+	if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
+		return false;
+
+	return true;
+}
+
+char* get_entry_path(const char* entry) {
+	char* entries_path = get_entries_path();
+	if (entries_path == NULL)
+		return NULL;
+
+	// Combine the entries path with the entry name
+	char* entry_path = format("%s/%s", entries_path, entry);
+
+	// Free the entries path
+	free(entries_path);
+
+	return entry_path;
+}
+
+bool entry_exists(const char* entry) {
+	char* entry_path = get_entry_path(entry);
+	if (entry_path == NULL)
+		return false;
+
+	// Check if the entry path exists
+	struct stat statbuf;
+	int result = stat(entry_path, &statbuf);
+
+	// Free the entry path
+	free(entry_path);
+
+	if (result != 0)
+		return false;
+
+	if (!S_ISDIR(statbuf.st_mode))
+		return false;
+
+	return true;
+}