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-rw-r--r--src/recoverable-problem.c167
1 files changed, 167 insertions, 0 deletions
diff --git a/src/recoverable-problem.c b/src/recoverable-problem.c
new file mode 100644
index 0000000..7aff163
--- /dev/null
+++ b/src/recoverable-problem.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ * Ted Gould <ted.gould@canonical.com>
+ */
+
+#include "recoverable-problem.h"
+#include <glib/gstdio.h>
+#include <string.h>
+#include <errno.h>
+
+/* Helpers to ensure we write nicely */
+static void
+write_string (int fd,
+ const gchar *string)
+{
+ int res;
+ do
+ res = write (fd, string, strlen (string));
+ while (G_UNLIKELY (res == -1 && errno == EINTR));
+}
+
+/* Make NULLs fast and fun! */
+static void
+write_null (int fd)
+{
+ int res;
+ do
+ res = write (fd, "", 1);
+ while (G_UNLIKELY (res == -1 && errno == EINTR));
+}
+
+/* Child watcher */
+static gboolean
+apport_child_watch (GPid pid G_GNUC_UNUSED, gint status G_GNUC_UNUSED, gpointer user_data)
+{
+ g_main_loop_quit((GMainLoop *)user_data);
+ return FALSE;
+}
+
+static gboolean
+apport_child_timeout (gpointer user_data)
+{
+ g_warning("Recoverable Error Reporter Timeout");
+ g_main_loop_quit((GMainLoop *)user_data);
+ return FALSE;
+}
+
+/* Code to report an error */
+void
+report_recoverable_problem (const gchar * signature, GPid report_pid, gboolean wait, gchar * additional_properties[])
+{
+ GSpawnFlags flags;
+ gboolean first;
+ GError * error = NULL;
+ gint error_stdin = 0;
+ GPid pid = 0;
+ gchar * pid_str = NULL;
+ gchar ** argv = NULL;
+ gchar * argv_nopid[2] = {
+ "/usr/share/apport/recoverable_problem",
+ NULL
+ };
+ gchar * argv_pid[4] = {
+ "/usr/share/apport/recoverable_problem",
+ "-p",
+ NULL, /* put pid_str when allocated here */
+ NULL
+ };
+
+
+ argv = (gchar **)argv_nopid;
+
+ if (report_pid != 0) {
+ pid_str = g_strdup_printf("%d", report_pid);
+ argv_pid[2] = pid_str;
+ argv = (gchar**)argv_pid;
+ }
+
+ flags = G_SPAWN_STDOUT_TO_DEV_NULL | G_SPAWN_STDERR_TO_DEV_NULL;
+ if (wait) {
+ flags |= G_SPAWN_DO_NOT_REAP_CHILD;
+ }
+
+ g_spawn_async_with_pipes(NULL, /* cwd */
+ argv,
+ NULL, /* envp */
+ flags,
+ NULL, NULL, /* child setup func */
+ &pid,
+ &error_stdin,
+ NULL, /* stdout */
+ NULL, /* stderr */
+ &error);
+
+ if (error != NULL) {
+ g_warning("Unable to report a recoverable error: %s", error->message);
+ g_error_free(error);
+ }
+
+ first = TRUE;
+
+ if (error_stdin != 0 && signature != NULL) {
+ write_string(error_stdin, "DuplicateSignature");
+ write_null(error_stdin);
+ write_string(error_stdin, signature);
+
+ first = FALSE;
+ }
+
+ if (error_stdin != 0 && additional_properties != NULL) {
+ gint i;
+ for (i = 0; additional_properties[i] != NULL; i++) {
+ if (!first) {
+ write_null(error_stdin);
+ } else {
+ first = FALSE;
+ }
+
+ write_string(error_stdin, additional_properties[i]);
+ }
+ }
+
+ if (error_stdin != 0) {
+ close(error_stdin);
+ }
+
+ if (wait && pid != 0) {
+ GSource * child_source, * timeout_source;
+ GMainContext * context = g_main_context_new();
+ GMainLoop * loop = g_main_loop_new(context, FALSE);
+
+ child_source = g_child_watch_source_new(pid);
+ g_source_attach(child_source, context);
+ g_source_set_callback(child_source, (GSourceFunc)apport_child_watch, loop, NULL);
+
+ timeout_source = g_timeout_source_new_seconds(5);
+ g_source_attach(timeout_source, context);
+ g_source_set_callback(timeout_source, apport_child_timeout, loop, NULL);
+
+ g_main_loop_run(loop);
+
+ g_source_destroy(timeout_source);
+ g_source_destroy(child_source);
+ g_main_loop_unref(loop);
+ g_main_context_unref(context);
+
+ g_spawn_close_pid(pid);
+ }
+
+ g_free(pid_str);
+
+ return;
+}