core: Move triggers into separate binary: ostree-run-triggers

I'm trying to keep ostree as being closer to just being the versioning
filesystem, so let's split out the triggers into a different binary
(although still namespaced ostree-).

src/triggers/ostree-run-triggers.c

@@ -0,0 +1,221 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2011,2012 Colin Walters <walters@verbum.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters@verbum.org>
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+#include <string.h>
+
+static gboolean quiet;
+
+static GOptionEntry options[] = {
+  { "quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet, "Don't display informational messages", NULL },
+  { NULL }
+};
+
+static gboolean
+run_trigger (const char     *path,
+             GError        **error)
+{
+  gboolean ret = FALSE;
+  char *basename = NULL;
+  GPtrArray *args = NULL;
+  int estatus;
+
+  basename = g_path_get_basename (path);
+
+  args = g_ptr_array_new ();
+  
+  g_ptr_array_add (args, (char*)path);
+  g_ptr_array_add (args, NULL);
+      
+  g_print ("Running trigger: %s\n", path);
+  if (!g_spawn_sync (NULL,
+                     (char**)args->pdata,
+                     NULL,
+                     0,
+                     NULL, NULL, NULL, NULL,
+                     &estatus,
+                     error))
+    {
+      g_prefix_error (error, "Failed to run trigger %s: ", basename);
+      goto out;
+    }
+
+  ret = TRUE;
+ out:
+  g_free (basename);
+  if (args)
+    g_ptr_array_free (args, TRUE);
+  return ret;
+}
+
+static gboolean
+check_trigger (GFile          *trigger,
+               GError        **error)
+{
+  gboolean ret = FALSE;
+  GInputStream *instream = NULL;
+  GDataInputStream *datain = NULL;
+  GError *temp_error = NULL;
+  char *line;
+  gsize len;
+  char *ifexecutable_path = NULL;
+  char *trigger_path = NULL;
+  gboolean matched = TRUE;
+
+  trigger_path = g_file_get_path (trigger);
+
+  instream = (GInputStream*)g_file_read (trigger, NULL, error);
+  if (!instream)
+    goto out;
+  datain = g_data_input_stream_new (instream);
+
+  while ((line = g_data_input_stream_read_line (datain, &len, NULL, &temp_error)) != NULL)
+    {
+      if (g_str_has_prefix (line, "# IfExecutable: "))
+        {
+          char *executable = g_strdup (line + strlen ("# IfExecutable: "));
+          g_strchomp (executable);
+          g_free (ifexecutable_path);
+          ifexecutable_path = g_find_program_in_path (executable);
+          g_free (executable);
+          if (!ifexecutable_path)
+            {
+              matched = FALSE;
+              break;
+            }
+          break;
+        }
+      g_free (line);
+    }
+  if (line == NULL && temp_error != NULL)
+    {
+      g_propagate_error (error, temp_error);
+      goto out;
+    }
+  if (matched)
+    {
+      if (!run_trigger (trigger_path, error))
+        goto out;
+    }
+  
+  ret = TRUE;
+ out:
+  g_free (trigger_path);
+  g_free (ifexecutable_path);
+  g_clear_object (&instream);
+  g_clear_object (&datain);
+  return ret;
+}
+
+
+gboolean
+run_triggers (GError        **error)
+{
+  gboolean ret = FALSE;
+  GError *temp_error = NULL;
+  char *triggerdir_path = NULL;
+  GFile *triggerdir = NULL;
+  GFileInfo *file_info = NULL;
+  GFileEnumerator *enumerator = NULL;
+
+  triggerdir_path = g_build_filename (LIBEXECDIR, "ostree", "triggers.d", NULL);
+  triggerdir = g_file_new_for_path (triggerdir_path);
+
+  enumerator = g_file_enumerate_children (triggerdir, "standard::name,standard::type", 
+                                          G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
+                                          NULL, 
+                                          error);
+  if (!enumerator)
+    goto out;
+
+  while ((file_info = g_file_enumerator_next_file (enumerator, NULL, &temp_error)) != NULL)
+    {
+      const char *name;
+      guint32 type;
+      char *child_path = NULL;
+      GFile *child = NULL;
+      gboolean success;
+
+      name = g_file_info_get_attribute_byte_string (file_info, "standard::name"); 
+      type = g_file_info_get_attribute_uint32 (file_info, "standard::type");
+      
+      if (type == G_FILE_TYPE_REGULAR && g_str_has_suffix (name, ".trigger"))
+        {
+          child_path = g_build_filename (triggerdir_path, name, NULL);
+          child = g_file_new_for_path (child_path);
+
+          success = check_trigger (child, error);
+        }
+      else
+        success = TRUE;
+
+      g_object_unref (file_info);
+      g_free (child_path);
+      g_clear_object (&child);
+      if (!success)
+        goto out;
+    }
+  if (file_info == NULL && temp_error != NULL)
+    {
+      g_propagate_error (error, temp_error);
+      goto out;
+    }
+
+  ret = TRUE;
+ out:
+  g_free (triggerdir_path);
+  g_clear_object (&triggerdir);
+  g_clear_object (&enumerator);
+  return ret;
+}
+
+int
+main (int    argc,
+      char **argv)
+{
+  GOptionContext *context;
+  GError *real_error = NULL;
+  GError **error = &real_error;
+  gboolean ret = FALSE;
+
+  g_type_init ();
+
+  context = g_option_context_new ("- Regenerate caches in operating system tree");
+  g_option_context_add_main_entries (context, options, NULL);
+
+  if (!g_option_context_parse (context, &argc, &argv, error))
+    goto out;
+
+  if (!run_triggers (error))
+    goto out;
+
+  ret = TRUE;
+ out:
+  if (real_error)
+    g_printerr ("%s\n", real_error->message);
+  g_clear_error (&real_error);
+  if (!ret)
+    return 1;
+  return 0;
+}

src/triggers/triggers.d/desktop-database.trigger

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Post-installation hook for desktop files.  -*- mode: sh -*-
+#
+# Written by Matthias Clasen <mclasen@redhat.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: update-desktop-database
+# REMatch: /share/applications/.*/.*\.desktop
+
+exec update-desktop-database -q ./usr/share/applications

src/triggers/triggers.d/gdk-pixbuf.trigger

@@ -0,0 +1,26 @@
+#!/bin/sh
+# Post-installation hook for gdk-pixbuf.  -*- mode: sh -*-
+# Corresponds to gdk-pixbuf/gdk-pixbuf/Makefile.am:install-data-hook
+#
+# Written by Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: gdk-pixbuf-query-loaders
+# RequiresChroot: true
+# LiteralMatch: /gdk-pixbuf-2.0/2.10.0/loaders/
+
+exec gdk-pixbuf-query-loaders --update-cache

src/triggers/triggers.d/glib.trigger

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Post-installation hook for glib/gschema.  -*- mode: sh -*-
+#
+# Written by Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: glib-compile-schemas
+# LiteralMatch: /share/glib-2.0/schemas/
+
+exec glib-compile-schemas ./usr/share/glib-2.0/schemas

src/triggers/triggers.d/gtk+.trigger

@@ -0,0 +1,31 @@
+#!/bin/sh
+# Post-installation hook for gtk icon cache.  -*- mode: sh -*-
+#
+# Written by Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: gtk-update-icon-cache
+# LiteralMatch: /share/icons/
+
+for dir in ./usr/share/icons/*; do
+  if test -f $dir/index.theme; then
+    if ! gtk-update-icon-cache --quiet $dir; then
+	echo "Failed to run gtk-update-icon-cache for $dir"
+	exit 1
+    fi
+  fi
+done

src/triggers/triggers.d/immodules.trigger

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Post-installation hook for GTK+ input method modules.  -*- mode: sh -*-
+#
+# Written by Matthias Clasen <mclasen@redhat.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: gtk-query-immodules-3.0
+# REMatch: /lib.*/gtk-3\.0/3\.0\.0/immodules/.*\.so
+
+gtk-query-immodules-3.0 --update-cache

src/triggers/triggers.d/ldconfig.trigger

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Post-installation hook for shared libraries.  -*- mode: sh -*-
+#
+# Written by Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: ldconfig
+# REMatch: /lib.*/\.so.*
+
+ldconfig -r .

src/triggers/triggers.d/mime-database.trigger

@@ -0,0 +1,24 @@
+#!/bin/sh
+# Post-installation hook for shared-mime-info.  -*- mode: sh -*-
+#
+# Written by Matthias Clasen <mclasen@redhat.com>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: update-mime-database
+# REMatch: /mime/packages/.*\.xml
+
+exec update-mime-database ./usr/share/mime

src/triggers/triggers.d/pango.trigger

@@ -0,0 +1,26 @@
+#!/bin/sh
+# Post-installation hook for pango.  -*- mode: sh -*-
+# Corresponds to gdk-pixbuf/gdk-pixbuf/Makefile.am:install-data-hook
+#
+# Written by Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+# IfExecutable: pango-querymodules
+# REMatch: /lib.*/pango/.*/modules/.*\.so
+
+DEST=/etc/pango/pango.modules
+pango-querymodules > ${DEST}.tmp && mv ${DEST}.tmp ${DEST}