fix segfault in get_default_filepath

avtomat/main.c

@@ -90,6 +90,7 @@ main(int argc, char** argv)
 			while(getline(&curr_url, &url_len, url_file) != -1){
 					drop_newline(curr_url);
 				// Determine the filepath 
+				// Memory leak.
 				if (filepaths_file_path != NULL && getline(&curr_filepath, &filepath_len, filepaths_file) != -1) {
 					// Try to read a filepath from the filepaths file
 						drop_newline(curr_filepath);
@@ -161,24 +162,17 @@ download_file(char *url, char *filepath, CURL *curl)
 char* 
 get_default_filepath(const char *url)
 {
-	char *url_cpy = malloc(strlen(url)+1);
-	strcpy(url_cpy, url);
-	die_if_null(url_cpy, "Malloc failed!");
-
-	char *tok_pointer = strtok(url_cpy, "/");
-	char *tok_buf = tok_pointer;
-
-	//case of adress without '/' this will return adress as filename 
-    while(tok_buf != NULL){
-        tok_pointer = tok_buf;
-        tok_buf = strtok(NULL, "/");
-    }
+	char *last_slash = strrchr(url, '/');
+	if(last_slash == NULL)
+		last_slash = (char *)url;
+	else
+		last_slash+=1; // remove '/'
 
-	char *filepath = malloc(strlen(tok_pointer)+1);
+	char *filepath = NULL;
+	filepath = malloc(strlen(last_slash)+1);
 	die_if_null(filepath, "Malloc failed!"); 
-	strcpy(filepath, tok_pointer);
 
-	free(url_cpy);
+	strcpy(filepath, last_slash);
     return filepath;
 }