[virt-tools-list] [virt-viewer PATCH] Test error->message and, if NULL, use a default message
Jonathon Jongsma
jjongsma at redhat.com
Thu Feb 9 16:40:17 UTC 2017
Out of curiosity, what was the situation where you encountered a non-
NULL error with a NULL error->message? It doesn't seem like this should
be necessary.
Jonathon
On Thu, 2017-02-09 at 13:02 +0100, Christophe de Dinechin wrote:
> ---
> src/ovirt-foreign-menu.c | 14 +++++++-------
> src/remote-viewer.c | 22 ++++++++++++----------
> src/virt-viewer-app.c | 14 +++++++-------
> src/virt-viewer-file-transfer-dialog.c | 2 +-
> src/virt-viewer-file.c | 6 +++---
> src/virt-viewer-session-spice.c | 8 ++++----
> src/virt-viewer-util.c | 4 ++++
> src/virt-viewer-util.h | 3 +++
> src/virt-viewer.c | 10 +++++-----
> 9 files changed, 46 insertions(+), 37 deletions(-)
>
> diff --git a/src/ovirt-foreign-menu.c b/src/ovirt-foreign-menu.c
> index a51f2c9..8a2507f 100644
> --- a/src/ovirt-foreign-menu.c
> +++ b/src/ovirt-foreign-menu.c
> @@ -367,7 +367,7 @@ static void updated_cdrom_cb(GObject
> *source_object,
> const char *current_file = foreign_menu->priv-
> >current_iso_name;
>
> if (error != NULL) {
> - g_warning("failed to update cdrom resource: %s", error-
> >message);
> + g_warning("failed to update cdrom resource: %s",
> VV_MSG(error->message));
> g_clear_error(&error);
> }
> g_debug("setting OvirtCdrom:file back to '%s'",
> @@ -504,7 +504,7 @@ static void cdrom_file_refreshed_cb(GObject
> *source_object,
>
> ovirt_resource_refresh_finish(cdrom, result, &error);
> if (error != NULL) {
> - g_warning("failed to refresh cdrom content: %s", error-
> >message);
> + g_warning("failed to refresh cdrom content: %s",
> VV_MSG(error->message));
> g_clear_error(&error);
> return;
> }
> @@ -548,7 +548,7 @@ static void cdroms_fetched_cb(GObject
> *source_object,
>
> ovirt_collection_fetch_finish(cdrom_collection, result, &error);
> if (error != NULL) {
> - g_warning("failed to fetch cdrom collection: %s", error-
> >message);
> + g_warning("failed to fetch cdrom collection: %s",
> VV_MSG(error->message));
> g_clear_error(&error);
> return;
> }
> @@ -600,7 +600,7 @@ static void storage_domains_fetched_cb(GObject
> *source_object,
>
> ovirt_collection_fetch_finish(collection, result, &error);
> if (error != NULL) {
> - g_warning("failed to fetch storage domains: %s", error-
> >message);
> + g_warning("failed to fetch storage domains: %s",
> VV_MSG(error->message));
> g_clear_error(&error);
> return;
> }
> @@ -663,7 +663,7 @@ static void vms_fetched_cb(GObject
> *source_object,
> collection = OVIRT_COLLECTION(source_object);
> ovirt_collection_fetch_finish(collection, result, &error);
> if (error != NULL) {
> - g_debug("failed to fetch VM list: %s", error->message);
> + g_debug("failed to fetch VM list: %s", VV_MSG(error-
> >message));
> g_clear_error(&error);
> return;
> }
> @@ -713,7 +713,7 @@ static void api_fetched_cb(GObject
> *source_object,
> proxy = OVIRT_PROXY(source_object);
> menu->priv->api = ovirt_proxy_fetch_api_finish(proxy, result,
> &error);
> if (error != NULL) {
> - g_debug("failed to fetch toplevel API object: %s", error-
> >message);
> + g_debug("failed to fetch toplevel API object: %s",
> VV_MSG(error->message));
> g_clear_error(&error);
> return;
> }
> @@ -746,7 +746,7 @@ static void iso_list_fetched_cb(GObject
> *source_object,
> ovirt_collection_fetch_finish(collection, result, &error);
> if (error != NULL) {
> g_warning("failed to fetch files for ISO storage domain:
> %s",
> - error->message);
> + VV_MSG(error->message));
> g_clear_error(&error);
> return;
> }
> diff --git a/src/remote-viewer.c b/src/remote-viewer.c
> index e4b0909..e4470ae 100644
> --- a/src/remote-viewer.c
> +++ b/src/remote-viewer.c
> @@ -278,7 +278,7 @@ spice_ctrl_do_connect(SpiceCtrlController *ctrl
> G_GNUC_UNUSED,
> GError *error = NULL;
>
> if (!virt_viewer_app_initial_connect(self, &error)) {
> - const gchar *msg = error ? error->message :
> + const gchar *msg = error ? VV_MSG(error->message) :
> _("Failed to initiate connection");
> virt_viewer_app_simple_message_dialog(self, msg);
> g_clear_error(&error);
> @@ -591,7 +591,7 @@ spice_ctrl_listen_async_cb(GObject *object,
> if (error != NULL) {
> virt_viewer_app_simple_message_dialog(app,
> _("Controller
> connection failed: %s"),
> - error->message);
> + VV_MSG(error-
> >message));
> g_clear_error(&error);
> exit(EXIT_FAILURE); /* TODO: make start async? */
> }
> @@ -859,7 +859,7 @@ create_ovirt_session(VirtViewerApp *app, const
> char *uri, GError **err)
>
> api = ovirt_proxy_fetch_api(proxy, &error);
> if (error != NULL) {
> - g_debug("failed to get oVirt 'api' collection: %s", error-
> >message);
> + g_debug("failed to get oVirt 'api' collection: %s",
> VV_MSG(error->message));
> #ifdef HAVE_OVIRT_CANCEL
> if (g_error_matches(error, OVIRT_REST_CALL_ERROR,
> OVIRT_REST_CALL_ERROR_CANCELLED)) {
> g_clear_error(&error);
> @@ -873,7 +873,7 @@ create_ovirt_session(VirtViewerApp *app, const
> char *uri, GError **err)
> vms = ovirt_api_get_vms(api);
> ovirt_collection_fetch(vms, proxy, &error);
> if (error != NULL) {
> - g_debug("failed to fetch oVirt 'vms' collection: %s", error-
> >message);
> + g_debug("failed to fetch oVirt 'vms' collection: %s",
> VV_MSG(error->message));
> goto error;
> }
> if (vm_name == NULL ||
> @@ -891,13 +891,13 @@ create_ovirt_session(VirtViewerApp *app, const
> char *uri, GError **err)
> if (state != OVIRT_VM_STATE_UP) {
> g_set_error(&error, VIRT_VIEWER_ERROR,
> VIRT_VIEWER_ERROR_FAILED,
> _("oVirt VM %s is not running"), vm_name);
> - g_debug("%s", error->message);
> + g_debug("%s", VV_MSG(error->message));
> goto error;
> }
> g_object_set(app, "guest-name", vm_name, NULL);
>
> if (!ovirt_vm_get_ticket(vm, proxy, &error)) {
> - g_debug("failed to get ticket for %s: %s", vm_name, error-
> >message);
> + g_debug("failed to get ticket for %s: %s", vm_name,
> VV_MSG(error->message));
> goto error;
> }
>
> @@ -931,7 +931,7 @@ create_ovirt_session(VirtViewerApp *app, const
> char *uri, GError **err)
> if (ghost == NULL) {
> g_set_error(&error, VIRT_VIEWER_ERROR,
> VIRT_VIEWER_ERROR_FAILED,
> _("oVirt VM %s has no host information"),
> vm_name);
> - g_debug("%s", error->message);
> + g_debug("%s", VV_MSG(error->message));
> goto error;
> }
>
> @@ -942,7 +942,7 @@ create_ovirt_session(VirtViewerApp *app, const
> char *uri, GError **err)
> } else {
> g_set_error(&error, VIRT_VIEWER_ERROR,
> VIRT_VIEWER_ERROR_FAILED,
> _("oVirt VM %s has unknown display type: %d"),
> vm_name, type);
> - g_debug("%s", error->message);
> + g_debug("%s", VV_MSG(error->message));
> goto error;
> }
>
> @@ -1136,7 +1136,7 @@ retry_dialog:
> g_free(path);
> if (error) {
> g_prefix_error(&error, _("Invalid file %s: "),
> guri);
> - g_warning("%s", error->message);
> + g_warning("%s", VV_MSG(error->message));
> goto cleanup;
> }
> g_object_get(G_OBJECT(vvfile), "type", &type, NULL);
> @@ -1197,7 +1197,9 @@ cleanup:
>
> if (!ret && priv->open_recent_dialog) {
> if (error != NULL) {
> - virt_viewer_app_simple_message_dialog(app, _("Unable to
> connect: %s"), error->message);
> + virt_viewer_app_simple_message_dialog(app,
> + _("Unable to
> connect: %s"),
> + VV_MSG(error-
> >message));
> }
> g_clear_error(&error);
> goto retry_dialog;
> diff --git a/src/virt-viewer-app.c b/src/virt-viewer-app.c
> index 2e7e193..34e60b8 100644
> --- a/src/virt-viewer-app.c
> +++ b/src/virt-viewer-app.c
> @@ -256,7 +256,7 @@ virt_viewer_app_save_config(VirtViewerApp *self)
> // with the vm name so user can make sense of it later.
> gchar *comment = g_key_file_get_comment(priv->config, priv-
> >uuid, NULL, &error);
> if (error) {
> - g_debug("Unable to get comment from key file: %s",
> error->message);
> + g_debug("Unable to get comment from key file: %s",
> VV_MSG(error->message));
> g_clear_error(&error);
> } else {
> if (!comment || *comment == '\0')
> @@ -267,7 +267,7 @@ virt_viewer_app_save_config(VirtViewerApp *self)
>
> if ((data = g_key_file_to_data(priv->config, NULL, &error)) ==
> NULL ||
> !g_file_set_contents(priv->config_file, data, -1, &error)) {
> - g_warning("Couldn't save configuration: %s", error-
> >message);
> + g_warning("Couldn't save configuration: %s", VV_MSG(error-
> >message));
> g_clear_error(&error);
> }
> g_free(data);
> @@ -376,7 +376,7 @@
> virt_viewer_app_get_monitor_mapping_for_section(VirtViewerApp *self,
> const gchar
> if (error) {
> if (error->code != G_KEY_FILE_ERROR_GROUP_NOT_FOUND
> && error->code != G_KEY_FILE_ERROR_KEY_NOT_FOUND)
> - g_warning("Error reading monitor assignments for %s:
> %s", section, error->message);
> + g_warning("Error reading monitor assignments for %s:
> %s", section, VV_MSG(error->message));
> g_clear_error(&error);
> } else {
> mapping = virt_viewer_parse_monitor_mappings(mappings,
> nmappings, get_n_client_monitors());
> @@ -1240,7 +1240,7 @@ virt_viewer_app_activate(VirtViewerApp *self,
> GError **error)
>
> if (ret == FALSE) {
> if(error != NULL && *error != NULL)
> - virt_viewer_app_show_status(self, (*error)->message);
> + virt_viewer_app_show_status(self, VV_MSG((*error)-
> >message));
> priv->connected = FALSE;
> } else {
> virt_viewer_app_show_status(self, _("Connecting to graphic
> server"));
> @@ -1726,7 +1726,7 @@ virt_viewer_app_init(VirtViewerApp *self)
> if (g_error_matches(error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
> g_debug("No configuration file %s", self->priv-
> >config_file);
> else if (error)
> - g_warning("Couldn't load configuration: %s", error-
> >message);
> + g_warning("Couldn't load configuration: %s", VV_MSG(error-
> >message));
>
> g_clear_error(&error);
>
> @@ -1829,7 +1829,7 @@
> virt_viewer_app_on_application_startup(GApplication *app)
>
> if (!virt_viewer_app_start(self, &error)) {
> if (error && !g_error_matches(error, VIRT_VIEWER_ERROR,
> VIRT_VIEWER_ERROR_CANCELLED))
> - virt_viewer_app_simple_message_dialog(self, error-
> >message);
> + virt_viewer_app_simple_message_dialog(self,
> VV_MSG(error->message));
>
> g_clear_error(&error);
> g_application_quit(app);
> @@ -1865,7 +1865,7 @@ virt_viewer_app_local_command_line
> (GApplication *gapp,
>
> if (!g_option_context_parse(context, &argc, args, &error)) {
> if (error != NULL) {
> - g_printerr(_("%s\n"), error->message);
> + g_printerr(_("%s\n"), VV_MSG(error->message));
> g_error_free(error);
> }
>
> diff --git a/src/virt-viewer-file-transfer-dialog.c b/src/virt-
> viewer-file-transfer-dialog.c
> index 07d25a7..80930eb 100644
> --- a/src/virt-viewer-file-transfer-dialog.c
> +++ b/src/virt-viewer-file-transfer-dialog.c
> @@ -218,7 +218,7 @@ static void task_finished(SpiceFileTransferTask
> *task,
>
> if (error && !g_error_matches(error, G_IO_ERROR,
> G_IO_ERROR_CANCELLED)) {
> self->priv->failed = g_slist_prepend(self->priv->failed,
> g_object_ref(task));
> - g_warning("File transfer task %p failed: %s", task, error-
> >message);
> + g_warning("File transfer task %p failed: %s", task,
> VV_MSG(error->message));
> }
>
> self->priv->file_transfers = g_slist_remove(self->priv-
> >file_transfers, task);
> diff --git a/src/virt-viewer-file.c b/src/virt-viewer-file.c
> index 9ff2a05..4a45af4 100644
> --- a/src/virt-viewer-file.c
> +++ b/src/virt-viewer-file.c
> @@ -217,7 +217,7 @@ virt_viewer_file_get_string(VirtViewerFile* self,
>
> result = g_key_file_get_string(self->priv->keyfile, group, key,
> &inner_error);
> if (inner_error && inner_error->domain != G_KEY_FILE_ERROR)
> - g_critical("%s", inner_error->message);
> + g_critical("%s", VV_MSG(inner_error->message));
> g_clear_error(&inner_error);
>
> return result;
> @@ -246,7 +246,7 @@ virt_viewer_file_get_string_list(VirtViewerFile*
> self, const char *group,
>
> result = g_key_file_get_string_list(self->priv->keyfile, group,
> key, length, &inner_error);
> if (inner_error && inner_error->domain != G_KEY_FILE_ERROR)
> - g_critical("%s", inner_error->message);
> + g_critical("%s", VV_MSG(inner_error->message));
> g_clear_error(&inner_error);
>
> return result;
> @@ -275,7 +275,7 @@ virt_viewer_file_get_int(VirtViewerFile* self,
>
> result = g_key_file_get_integer(self->priv->keyfile, group, key,
> &inner_error);
> if (inner_error && inner_error->domain != G_KEY_FILE_ERROR)
> - g_critical("%s", inner_error->message);
> + g_critical("%s", VV_MSG(inner_error->message));
> g_clear_error(&inner_error);
>
> return result;
> diff --git a/src/virt-viewer-session-spice.c b/src/virt-viewer-
> session-spice.c
> index c3fce48..e4d0e32 100644
> --- a/src/virt-viewer-session-spice.c
> +++ b/src/virt-viewer-session-spice.c
> @@ -297,7 +297,7 @@ usb_connect_failed(GObject *object G_GNUC_UNUSED,
> if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
> return;
>
> - g_signal_emit_by_name(self, "session-usb-failed", error-
> >message);
> + g_signal_emit_by_name(self, "session-usb-failed", VV_MSG(error-
> >message));
> }
>
> static void
> virt_viewer_session_spice_set_has_sw_reader(VirtViewerSessionSpice
> *session,
> @@ -702,7 +702,7 @@
> virt_viewer_session_spice_main_channel_event(SpiceChannel *channel,
>
> if (self->priv->pass_try > 0)
> g_signal_emit_by_name(session, "session-auth-refused",
> - error != NULL ? error->message :
> _("Invalid password"));
> + error != NULL ? VV_MSG(error-
> >message) : _("Invalid password"));
> self->priv->pass_try++;
>
> /* The username is firstly pre-filled with the username of
> the current
> @@ -742,7 +742,7 @@
> virt_viewer_session_spice_main_channel_event(SpiceChannel *channel,
> {
> const GError *error = spice_channel_get_error(channel);
>
> - g_debug("main channel: failed to connect %s", error ? error-
> >message : "");
> + g_debug("main channel: failed to connect %s", error ?
> VV_MSG(error->message) : "");
>
> if (g_error_matches(error, G_IO_ERROR,
> G_IO_ERROR_PROXY_NEED_AUTH) ||
> g_error_matches(error, G_IO_ERROR,
> G_IO_ERROR_PROXY_AUTH_FAILED)) {
> @@ -1128,7 +1128,7 @@
> virt_viewer_session_spice_channel_destroy(G_GNUC_UNUSED SpiceSession
> *s,
>
> self->priv->channel_count--;
> if (self->priv->channel_count == 0)
> - g_signal_emit_by_name(self, "session-disconnected", error ?
> error->message : NULL);
> + g_signal_emit_by_name(self, "session-disconnected", error ?
> VV_MSG(error->message) : NULL);
> }
>
> VirtViewerSession *
> diff --git a/src/virt-viewer-util.c b/src/virt-viewer-util.c
> index 0491f73..e49b25f 100644
> --- a/src/virt-viewer-util.c
> +++ b/src/virt-viewer-util.c
> @@ -41,6 +41,8 @@
>
> #include "virt-viewer-util.h"
>
> +const char *virt_viewer_default_error = "Unknown virt-viewer error";
> // Localized during init
> +
> GQuark
> virt_viewer_error_quark(void)
> {
> @@ -265,6 +267,8 @@ static BOOL is_handle_valid(HANDLE h)
>
> void virt_viewer_util_init(const char *appname)
> {
> + virt_viewer_default_error = _(virt_viewer_default_error);
> +
> #ifdef G_OS_WIN32
> /*
> * This named mutex will be kept around by Windows until the
> diff --git a/src/virt-viewer-util.h b/src/virt-viewer-util.h
> index 5515f66..6abfd1c 100644
> --- a/src/virt-viewer-util.h
> +++ b/src/virt-viewer-util.h
> @@ -36,6 +36,9 @@ enum {
> #define VIRT_VIEWER_ERROR virt_viewer_error_quark ()
> #define VIRT_VIEWER_RESOURCE_PREFIX "/org/virt-manager/virt-viewer"
>
> +extern const char *virt_viewer_default_error;
> +#define VV_MSG(msg) ((msg) ? (msg) : virt_viewer_default_error)
> +
> GQuark virt_viewer_error_quark(void);
>
> void virt_viewer_util_init(const char *appname);
> diff --git a/src/virt-viewer.c b/src/virt-viewer.c
> index 1121146..320f803 100644
> --- a/src/virt-viewer.c
> +++ b/src/virt-viewer.c
> @@ -630,7 +630,7 @@ virt_viewer_open_connection(VirtViewerApp *self
> G_GNUC_UNUSED, int *fd)
>
> err = virGetLastError();
> if (err && err->code != VIR_ERR_NO_SUPPORT) {
> - g_debug("Error %s", err->message ? err->message :
> "Unknown");
> + g_debug("Error %s", VV_MSG(err->message) ? err->message :
> "Unknown");
> return TRUE;
> }
> #endif
> @@ -642,7 +642,7 @@ virt_viewer_open_connection(VirtViewerApp *self
> G_GNUC_UNUSED, int *fd)
> if (virDomainOpenGraphics(priv->dom, 0, pair[0],
> VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH) <
> 0) {
> err = virGetLastError();
> - g_debug("Error %s", err && err->message ? err->message :
> "Unknown");
> + g_debug("Error %s", err && VV_MSG(err->message) ? err-
> >message : "Unknown");
> close(pair[0]);
> close(pair[1]);
> return TRUE;
> @@ -680,7 +680,7 @@ virt_viewer_domain_event(virConnectPtr conn
> G_GNUC_UNUSED,
> case VIR_DOMAIN_EVENT_STARTED:
> virt_viewer_update_display(self, dom, &error);
> if (error) {
> - virt_viewer_app_simple_message_dialog(app, error-
> >message);
> + virt_viewer_app_simple_message_dialog(app, VV_MSG(error-
> >message));
> g_clear_error(&error);
> }
>
> @@ -688,7 +688,7 @@ virt_viewer_domain_event(virConnectPtr conn
> G_GNUC_UNUSED,
> if (error) {
> /* we may want to consolidate error reporting in
> app_activate() instead */
> - g_warning("%s", error->message);
> + g_warning("%s", VV_MSG(error->message));
> g_clear_error(&error);
> }
> break;
> @@ -778,7 +778,7 @@ choose_vm(GtkWindow *main_window,
> virErrorPtr err = virGetLastError();
> g_set_error_literal(error,
> VIRT_VIEWER_ERROR,
> VIRT_VIEWER_ERROR_FAILED,
> - err && err->message ? err->message :
> "unknown libvirt error");
> + err && err->message ? err->message :
> _("Unknown libvirt error"));
> } else if (virDomainGetState(dom, &i, NULL, 0) < 0 || i !=
> VIR_DOMAIN_RUNNING) {
> g_set_error(error,
> VIRT_VIEWER_ERROR, VIRT_VIEWER_ERROR_FAILED,
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