solver, upgrade: properly detect missing repository tags

* upgrade needs explicit check so we don't try self-upgrade
   (which would print additional messages on screen)
 * add can fix problems, so check against the new world
 * merge the code in few places

src/add.c

@@ -107,7 +107,6 @@ static int add_main(void *ctx, struct apk_database *db, int argc, char **argv)
 			}
 			apk_dep_from_pkg(&dep, db, pkg);
 		} else {
-			struct apk_repository_tag *tag;
 			apk_blob_t b = APK_BLOB_STR(argv[i]);
 
 			apk_blob_pull_dep(&b, db, &dep);
@@ -116,12 +115,6 @@ static int add_main(void *ctx, struct apk_database *db, int argc, char **argv)
 					  argv[i]);
 				return -1;
 			}
-			tag = &db->repo_tags[dep.repository_tag];
-			if (!tag->allowed_repos) {
-				apk_error("Repository tag '" BLOB_FMT "' is not defined",
-					  BLOB_PRINTF(*tag->name));
-				return -1;
-			}
 		}
 
 		if (virtpkg == NULL) {

src/apk_database.h

@@ -130,7 +130,6 @@ struct apk_database {
 	unsigned int local_repos;
 	int performing_self_update : 1;
 	int permanent : 1;
-	int missing_tags : 1;
 	int compat_newfeatures : 1;
 	int compat_notinstallable : 1;
 	int compat_old_world : 1;
@@ -195,6 +194,7 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts);
 void apk_db_close(struct apk_database *db);
 int apk_db_write_config(struct apk_database *db);
 int apk_db_permanent(struct apk_database *db);
+int apk_db_check_world(struct apk_database *db, struct apk_dependency_array *world);
 struct apk_package_array *apk_db_get_pending_triggers(struct apk_database *db);
 
 struct apk_package *apk_db_pkg_add(struct apk_database *db, struct apk_package *pkg);

src/database.c

@@ -1138,7 +1138,7 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
 	struct apk_bstream *bs;
 	struct statfs stfs;
 	apk_blob_t blob;
-	int i, r, fd, rr = 0;
+	int r, fd, rr = 0;
 
 	memset(db, 0, sizeof(*db));
 	if (apk_flags & APK_SIMULATE) {
@@ -1315,20 +1315,6 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
 		goto ret_r;
 	}
 
-	/* repository id 0 is the no-tag repo */
-	for (i = 0; i < db->world->num; i++) {
-		struct apk_dependency *dep = &db->world->item[i];
-		int tag = dep->repository_tag;
-
-		if (tag == 0 || db->repo_tags[tag].allowed_repos != 0)
-			continue;
-
-		apk_warning("The repository tag for world dependency '%s@" BLOB_FMT "' does not exist",
-			    dep->name->name,
-			    BLOB_PRINTF(*db->repo_tags[tag].name));
-		db->missing_tags = 1;
-	}
-
 	if (db->compat_newfeatures) {
 		apk_warning("This apk-tools is OLD! Some packages %s.",
 			    db->compat_notinstallable ?
@@ -1554,6 +1540,29 @@ int apk_db_permanent(struct apk_database *db)
 	return db->permanent;
 }
 
+int apk_db_check_world(struct apk_database *db, struct apk_dependency_array *world)
+{
+	int i, bad = 0;
+
+	if (apk_flags & APK_FORCE)
+		return 0;
+
+	for (i = 0; i < world->num; i++) {
+		struct apk_dependency *dep = &world->item[i];
+		int tag = dep->repository_tag;
+
+		if (tag == 0 || db->repo_tags[tag].allowed_repos != 0)
+			continue;
+
+		apk_warning("The repository tag for world dependency '%s@" BLOB_FMT "' does not exist",
+			    dep->name->name,
+			    BLOB_PRINTF(*db->repo_tags[tag].name));
+		bad++;
+	}
+
+	return bad;
+}
+
 struct apk_package *apk_db_get_pkg(struct apk_database *db,
 				   struct apk_checksum *csum)
 {

src/solver.c

@@ -1328,7 +1328,7 @@ int apk_solver_commit_changeset(struct apk_database *db,
 	struct apk_change *change;
 	int i, r = 0, size_diff = 0;
 
-	if (db->missing_tags && !(apk_flags & APK_FORCE)) {
+	if (apk_db_check_world(db, world) != 0) {
 		apk_error("Not committing changes due to missing repository tags. Use --force to override.");
 		return -1;
 	}
@@ -1478,7 +1478,7 @@ int apk_solver_commit(struct apk_database *db,
 	struct apk_package_array *solution = NULL;
 	int r;
 
-	if (db->missing_tags && !(apk_flags & APK_FORCE)) {
+	if (apk_db_check_world(db, world) != 0) {
 		apk_error("Not committing changes due to missing repository tags. Use --force to override.");
 		return -1;
 	}

src/upgrade.c

@@ -97,6 +97,11 @@ static int upgrade_main(void *ctx, struct apk_database *db, int argc, char **arg
 	struct apk_dependency_array *world = NULL;
 	int i, r;
 
+	if (apk_db_check_world(db, db->world) != 0) {
+		apk_error("Not continuing with upgrade due to missing repository tags. Use --force to override.");
+		return -1;
+	}
+
 	solver_flags = APK_SOLVERF_UPGRADE | uctx->solver_flags;
 	if (!uctx->no_self_upgrade) {
 		r = apk_do_self_upgrade(db, solver_flags);