3/18: Functional package installation backend

src/istoreutils.h

@@ -0,0 +1,71 @@
+#ifndef ISTOREUTILS_H_
+#define ISTOREUTILS_H_
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+typedef enum {
+	INDEX,
+	STORE
+}
+index_store_t;
+
+typedef enum {
+        GL_BACKUP_OK = 0,
+        GL_BACKUP_ERR_ALLOC = 1,
+        GL_BACKUP_ERR_OPEN = 2,
+        GL_BACKUP_ERR_ADD_INDEX = 3,
+        GL_BACKUP_ERR_ADD_STORE = 4,
+        GL_BACKUP_ERR_ADD_LINKS = 5,
+        GL_BACKUP_ERR_CLOSE = 6
+}
+gl_backup_status_t;
+
+/*
+ * GL_INSTALL_OK: installation successful
+ * GL_INSTALL_ERR_OPEN: unable to open .gpkg file
+ * GL_INSTALL_ERR_MANIFEST: manifest is missing or unparseable
+ * GL_INSTALL_ERR_EXTRACT: unable to extract files
+ * GL_INSTALL_ERR_INDEX: unable to update index
+ * GL_INSTALL_ERR_ALREADY_INSTALLED: package already installed
+ */
+
+typedef enum {
+        GL_INSTALL_OK = 0,
+        GL_INSTALL_ERR_OPEN = 1,
+        GL_INSTALL_ERR_MANIFEST = 2,
+        GL_INSTALL_ERR_EXTRACT = 3,
+        GL_INSTALL_ERR_INDEX = 4,
+        GL_INSTALL_ERR_ALREADY_INSTALLED = 5,
+}
+gl_install_status_t;
+
+struct gpkg_entry {
+	char *repo;
+	char *pkg;
+};
+
+struct gindex {
+	int uid;
+	int listed;
+	struct gpkg_entry *entries;
+	size_t count;
+};
+
+bool gl_usr_istore_exists(index_store_t index_or_store, int uid);
+bool gl_sys_istore_exists(index_store_t index_or_store);
+
+int gl_init_user(uid_t uid, bool isVerbose);
+
+int gl_parse_index(struct gindex *idx, FILE *f);
+void gl_free_index(struct gindex *idx);
+
+int gl_rebuild_index(uid_t uid, const char *out_dir);
+
+gl_backup_status_t gl_backup_istore(const char *tar_path, const char *glacier_root,
+                      const char *uid);
+
+gl_install_status_t gl_install_pkg(const char *gpkg_path, uid_t uid);
+
+#endif