[ASAN] lib: Squash various leaks in library and commandline

The pull one is the most likely to affect users.  Otherwise mostly
just cleaning up `-fsanitize=address`.

Closes: #587
Approved by: jlebon

src/libostree/ostree-metalink.c

@@ -632,6 +632,9 @@ _ostree_metalink_request_sync (OstreeMetalink        *self,
   if (mainctx)
     g_main_context_pop_thread_default (mainctx);
   g_clear_object (&request.metalink);
+  g_clear_pointer (&request.verification_sha256, g_free);
+  g_clear_pointer (&request.verification_sha512, g_free);
+  g_clear_pointer (&request.last_metalink_error, g_free);
   g_clear_pointer (&request.urls, g_ptr_array_unref);
   g_clear_pointer (&request.parser, g_markup_parse_context_free);
   return ret;

src/libostree/ostree-repo-libarchive.c

@@ -943,7 +943,10 @@ ostree_repo_write_archive_to_mtree (OstreeRepo                *self,
   ret = TRUE;
  out:
   if (a)
-    (void)archive_read_close (a);
+    {
+      (void)archive_read_close (a);
+      (void)archive_read_free (a);
+    }
   return ret;
 #else
   g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,

src/libostree/ostree-repo-pull.c

@@ -1982,7 +1982,7 @@ _ostree_repo_remote_new_fetcher (OstreeRepo  *self,
     g_autofree char *cookie_file = g_strdup_printf ("%s.cookies.txt",
                                                     remote_name);
 
-    jar_path = g_build_filename (g_file_get_path (self->repodir), cookie_file,
+    jar_path = g_build_filename (gs_file_get_path_cached (self->repodir), cookie_file,
                                  NULL);
 
     if (g_file_test(jar_path, G_FILE_TEST_IS_REGULAR))
@@ -2061,7 +2061,7 @@ fetch_mirrorlist (OstreeFetcher  *fetcher,
                   GError        **error)
 {
   gboolean ret = FALSE;
-  char **lines = NULL;
+  g_auto(GStrv) lines = NULL;
   g_autofree char *contents = NULL;
   SoupURI *mirrorlist = NULL;
   g_autoptr(GPtrArray) ret_mirrorlist =
@@ -2367,7 +2367,7 @@ ostree_repo_pull_with_options (OstreeRepo             *self,
   const char *dir_to_pull = NULL;
   g_autofree char **dirs_to_pull = NULL;
   g_autofree char **refs_to_fetch = NULL;
-  char **override_commit_ids = NULL;
+  g_autofree char **override_commit_ids = NULL;
   GSource *update_timeout = NULL;
   gboolean disable_static_deltas = FALSE;
   gboolean require_static_deltas = FALSE;

src/libostree/ostree-repo-static-delta-compilation-analysis.c

@@ -243,7 +243,7 @@ _ostree_delta_compute_similar_objects (OstreeRepo                 *repo,
 {
   gboolean ret = FALSE;
   g_autoptr(GHashTable) ret_modified_regfile_content =
-    g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify)g_ptr_array_unref);
+    g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
   g_autoptr(GPtrArray) from_sizes = NULL;
   g_autoptr(GPtrArray) to_sizes = NULL;
   guint i, j;

src/libostree/ostree-repo-static-delta-core.c

@@ -880,7 +880,9 @@ _ostree_repo_static_delta_dump (OstreeRepo                    *self,
                                OT_VARIANT_MAP_TRUSTED, &delta_superblock, error))
     goto out;
 
-  g_print ("%s\n", g_variant_print (delta_superblock, 1));
+  { g_autofree char *variant_string = g_variant_print (delta_superblock, 1);
+    g_print ("%s\n", variant_string);
+  }
 
   g_print ("Delta: %s\n", delta_id);
   { const char *endianness_description;

src/libostree/ostree-sepolicy.c

@@ -258,7 +258,7 @@ initable_init (GInitable     *initable,
   g_autoptr(GFileInputStream) filein = NULL;
   g_autoptr(GDataInputStream) datain = NULL;
   gboolean enabled = FALSE;
-  char *policytype = NULL;
+  g_autofree char *policytype = NULL;
   const char *selinux_prefix = "SELINUX=";
   const char *selinuxtype_prefix = "SELINUXTYPE=";
 
@@ -352,7 +352,7 @@ initable_init (GInitable     *initable,
           goto out;
         }
 
-      self->selinux_policy_name = g_strdup (policytype);
+      self->selinux_policy_name = g_steal_pointer (&policytype);
       self->selinux_policy_root = g_object_ref (etc_selinux_dir);
     }
 

src/libostree/ostree-sysroot-cleanup.c

@@ -491,7 +491,7 @@ prune_repo (OstreeRepo    *repo,
 
   if (freed_space > 0)
     {
-      char *freed_space_str = g_format_size_full (freed_space, 0);
+      g_autofree char *freed_space_str = g_format_size_full (freed_space, 0);
       g_print ("Freed objects: %s\n", freed_space_str);
     }
 

src/libostree/ostree-sysroot-upgrader.c

@@ -105,6 +105,7 @@ parse_refspec (OstreeSysrootUpgrader  *self,
   csum = g_key_file_get_string (self->origin, "origin", "override-commit", NULL);
   if (csum != NULL && !ostree_validate_checksum_string (csum, error))
     goto out;
+  g_clear_pointer (&self->override_csum, g_free);
   self->override_csum = g_steal_pointer (&csum);
 
   ret = TRUE;