1 files changed, 40 insertions, 0 deletions
diff --git a/common.h b/common.h
new file mode 100644
index 0000000..28b5242
--- /dev/null
+++ b/common.h
@@ -0,0 +1,40 @@
+#ifndef _COMMON_H_
+#define _COMMON_H_
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define BUF_SIZE 512
+#define DEFAULT_SOCK_FNAME "/pass-cache.sock"
+
+bool socket_path_did_alloc = false;
+
+void die(char* message) {
+  fprintf(stderr, "%s\n", message);
+  exit(EXIT_FAILURE);
+}
+
+char* get_socket_path(void) {
+  char* explicit_path = getenv("PASS_CACHE_SOCK");
+  if (explicit_path) {
+    return explicit_path;
+  }
+  char* base_path = getenv("XDG_RUNTIME_DIR");
+  if (!base_path) {
+    base_path = "/tmp";
+  }
+  char* final_path = (char*)malloc(strlen(base_path) + strlen(DEFAULT_SOCK_FNAME));
+  socket_path_did_alloc = true;
+  strcpy(final_path, base_path);
+  strcat(final_path, DEFAULT_SOCK_FNAME);
+  return final_path;
+}
+
+void free_socket_path(char* path) {
+  if (socket_path_did_alloc) {
+    free(path);
+  }
+}
+
+#endif //ifndef _COMMON_H_