Move database 'version' check to registration time

This is another step toward doing both local database validation
(ensuring we don't have depends files) and sync database validation (via
signatures if present) when the database is registered.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 58 insertions, 53 deletions

diff --git a/lib/libalpm/be_local.c b/lib/libalpm/be_local.c
index 4b2a3017..0ff51deb 100644
--- a/lib/libalpm/be_local.c
+++ b/lib/libalpm/be_local.c
@@ -314,6 +314,56 @@ static int is_dir(const char *path, struct dirent *entry)
 	return 0;
 }
 
+static int local_db_validate(pmdb_t *db)
+{
+	struct dirent *ent = NULL;
+	const char *dbpath;
+	DIR *dbdir;
+	int ret = -1;
+
+	dbpath = _alpm_db_path(db);
+	if(dbpath == NULL) {
+		RET_ERR(db->handle, PM_ERR_DB_OPEN, -1);
+	}
+	dbdir = opendir(dbpath);
+	if(dbdir == NULL) {
+		if(errno == ENOENT) {
+			/* database dir doesn't exist yet */
+			return 0;
+		} else {
+			RET_ERR(db->handle, PM_ERR_DB_OPEN, -1);
+		}
+	}
+
+	while((ent = readdir(dbdir)) != NULL) {
+		const char *name = ent->d_name;
+		char path[PATH_MAX];
+
+		if(strcmp(name, ".") == 0 || strcmp(name, "..") == 0) {
+			continue;
+		}
+		if(!is_dir(dbpath, ent)) {
+			continue;
+		}
+
+		snprintf(path, PATH_MAX, "%s%s/depends", dbpath, name);
+		if(access(path, F_OK) == 0) {
+			/* we found a depends file- bail */
+			db->handle->pm_errno = PM_ERR_DB_VERSION;
+			goto done;
+		}
+	}
+	/* we found no depends file after full scan */
+	ret = 0;
+
+done:
+	if(dbdir) {
+		closedir(dbdir);
+	}
+
+	return ret;
+}
+
 static int local_db_populate(pmdb_t *db)
 {
 	size_t est_count;
@@ -328,6 +378,7 @@ static int local_db_populate(pmdb_t *db)
 		/* pm_errno set in _alpm_db_path() */
 		return -1;
 	}
+
 	dbdir = opendir(dbpath);
 	if(dbdir == NULL) {
 		if(errno == ENOENT) {
@@ -867,62 +918,9 @@ int _alpm_local_db_remove(pmdb_t *db, pmpkg_t *info)
 	return ret;
 }
 
-static int local_db_version(pmdb_t *db)
-{
-	struct dirent *ent = NULL;
-	const char *dbpath;
-	DIR *dbdir;
-	int version;
-
-	dbpath = _alpm_db_path(db);
-	if(dbpath == NULL) {
-		RET_ERR(db->handle, PM_ERR_DB_OPEN, -1);
-	}
-	dbdir = opendir(dbpath);
-	if(dbdir == NULL) {
-		if(errno == ENOENT) {
-			/* database dir doesn't exist yet */
-			version = 2;
-			goto done;
-		} else {
-			RET_ERR(db->handle, PM_ERR_DB_OPEN, -1);
-		}
-	}
-
-	while((ent = readdir(dbdir)) != NULL) {
-		const char *name = ent->d_name;
-		char path[PATH_MAX];
-
-		if(strcmp(name, ".") == 0 || strcmp(name, "..") == 0) {
-			continue;
-		}
-		if(!is_dir(dbpath, ent)) {
-			continue;
-		}
-
-		snprintf(path, PATH_MAX, "%s%s/depends", dbpath, name);
-		if(access(path, F_OK) == 0) {
-			/* we found a depends file- bail */
-			version = 1;
-			goto done;
-		}
-	}
-	/* we found no depends file after full scan */
-	version = 2;
-
-done:
-	if(dbdir) {
-		closedir(dbdir);
-	}
-
-	_alpm_log(db->handle, PM_LOG_DEBUG, "local database version %d\n", version);
-	return version;
-}
-
 struct db_operations local_db_ops = {
 	.populate         = local_db_populate,
 	.unregister       = _alpm_db_unregister,
-	.version          = local_db_version,
 };
 
 pmdb_t *_alpm_db_register_local(pmhandle_t *handle)
@@ -933,11 +931,18 @@ pmdb_t *_alpm_db_register_local(pmhandle_t *handle)
 
 	db = _alpm_db_new("local", 1);
 	if(db == NULL) {
+		handle->pm_errno = PM_ERR_DB_CREATE;
 		return NULL;
 	}
 	db->ops = &local_db_ops;
 	db->handle = handle;
 
+	if(local_db_validate(db)) {
+		/* pm_errno set in local_db_validate() */
+		_alpm_db_free(db);
+		return NULL;
+	}
+
 	handle->db_local = db;
 	return db;
 }