From 858e43dea92474f0e48975b0cae9d9d84809f4b3 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <marco@localhost.localdomain>
Date: Fri, 29 Jun 2007 11:15:36 +0000
Subject: Add the native factory by bertf

---
diff --git a/.gitignore b/.gitignore
index 22b0384..6217e61 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@ Makefile.in
 *.deps
 *.libs
 *.la
+*.o
 *.lo
 *.loT
 .*.sw?
diff --git a/bin/.gitignore b/bin/.gitignore
new file mode 100644
index 0000000..10c2d34
--- /dev/null
+++ b/bin/.gitignore
@@ -0,0 +1 @@
+sugar-native-factory
diff --git a/bin/Makefile.am b/bin/Makefile.am
index ffbc7bb..ecc0e0d 100644
--- a/bin/Makefile.am
+++ b/bin/Makefile.am
@@ -1,6 +1,12 @@
 sugardir = $(pkgdatadir)/bin
 sugar_SCRIPTS = sugar-activity-factory
 
+bin_PROGRAMS = sugar-native-factory
+
+sugar_native_factory_SOURCE = sugar-native-factory.c
+sugar_native_factory_CFLAGS = $(NATIVE_FACTORY_CFLAGS)
+sugar_native_factory_LDADD = $(NATIVE_FACTORY_LIBS)
+
 bin_SCRIPTS = 			\
 	sugar			\
 	sugar-activity		\
diff --git a/bin/sugar-native-factory.c b/bin/sugar-native-factory.c
new file mode 100644
index 0000000..a04cd94
--- /dev/null
+++ b/bin/sugar-native-factory.c
@@ -0,0 +1,307 @@
+/*
+Copyright (c) 2007 Bert Freudenberg
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <dbus/dbus.h>
+
+char* prog;
+
+/* command and arguments for activity instance*/
+static char* inst_argv[100];
+static int   inst_argc = 0;
+
+/* instance process ids */
+static pid_t pidv[100];
+static int   pidc = 0;
+
+/* instance process id that exited before it was added */
+static pid_t exited = 0;
+
+
+
+/* add and remove instances, quit when last instance exits*/
+
+static void
+quit()
+{
+  fprintf(stderr, "%s: quitting\n", prog);
+  exit(0);
+}
+
+
+static void
+add_pid(pid_t pid)
+{
+  if (pid == exited)
+    {
+      fprintf(stderr, "%s: ign instance pid %i\n", prog, pid);
+      exited = 0;
+      if (pidc == 0)
+	quit();
+      return;
+    }
+  pidv[pidc++] = pid;
+  fprintf(stderr, "%s: add instance pid %i\n", prog, pid);
+}
+
+
+static void
+remove_pid(pid_t pid)
+{
+  int i;
+  for (i=0; i<pidc; i++) 
+    if (pidv[i]=pid)
+      break;
+  if (i==pidc)
+    {
+      exited = pid;
+      return;
+    }
+  pidc--;
+  for ( ; i<pidc; i++)
+    pidv[i] = pidv[i+1];
+
+  fprintf(stderr, "%s: del instance pid %i\n", prog, pid);
+
+  if (pidc == 0)
+    quit();
+}
+
+
+static void
+sigchld_handler(int signum)
+{
+  int pid;
+  int status;
+  while (1)
+    {
+      pid = waitpid(WAIT_ANY, &status, WNOHANG);
+      if (pid <= 0)
+	break;
+      remove_pid(pid);
+    }
+}
+
+
+
+/* fork and exit a new activity instance */
+
+static void
+create_instance(int argc)
+{
+  pid_t pid = fork();
+ 
+  if (pid<0)
+    {
+      perror("fork failed");
+      exit(1);
+    }
+
+  inst_argv[argc] = NULL;
+  if (pid == 0)
+    {
+      execvp(inst_argv[0], inst_argv);
+      perror(inst_argv[0]);
+      exit(1);
+    }
+
+  add_pid(pid);
+}
+
+
+
+/* handle dbus create() call */
+
+static DBusHandlerResult
+handle_create(DBusConnection *connection, DBusMessage* message)
+{
+  DBusMessage *reply;
+  DBusMessageIter iter_arss, iter_rss, iter_ss;
+  char *key, *value;
+  char *activity_id = 0;
+  int   argc = inst_argc;
+
+  dbus_message_iter_init(message, &iter_arss);
+  if (strcmp("a{ss}", dbus_message_iter_get_signature(&iter_arss)))
+    {
+      reply = dbus_message_new_error(message, 
+				     DBUS_ERROR_INVALID_ARGS, 
+				     "signature a{ss} expected");
+      dbus_connection_send(connection, reply, NULL);
+      dbus_message_unref(reply);
+      return DBUS_HANDLER_RESULT_HANDLED;
+    }
+
+  dbus_message_iter_recurse(&iter_arss, &iter_rss);
+
+  do
+    {
+      dbus_message_iter_recurse(&iter_rss, &iter_ss);
+      dbus_message_iter_get_basic(&iter_ss, &key);
+      dbus_message_iter_next(&iter_ss);
+      dbus_message_iter_get_basic(&iter_ss, &value); 
+
+      inst_argv[argc++] = key;
+      inst_argv[argc++] = value;
+
+      if (!strcmp("activity_id", key))
+	activity_id = value;
+
+    } while(dbus_message_iter_next(&iter_rss));
+
+  if (!activity_id)
+    {
+      reply = dbus_message_new_error(message, 
+				     DBUS_ERROR_INVALID_ARGS, 
+				     "'activity_id' expected");
+      dbus_connection_send(connection, reply, NULL);
+      dbus_message_unref(reply);
+      return DBUS_HANDLER_RESULT_HANDLED;
+    }
+
+  create_instance(argc);
+
+  reply = dbus_message_new_method_return(message);
+  dbus_connection_send(connection, reply, NULL);
+  dbus_message_unref(reply);
+
+  return DBUS_HANDLER_RESULT_HANDLED;
+}
+
+
+
+/* activity factory dbus service */
+
+static void
+factory_unregistered_func(DBusConnection  *connection,
+			  void            *user_data)
+{
+}
+
+
+static DBusHandlerResult
+factory_message_func(DBusConnection  *connection,
+		     DBusMessage     *message,
+		     void            *user_data)
+{
+  if (dbus_message_is_method_call(message,
+				  "org.laptop.ActivityFactory",
+				  "create"))
+    return handle_create(connection, message);
+  else
+    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+
+static DBusObjectPathVTable
+factory_vtable = {
+  factory_unregistered_func,
+  factory_message_func,
+  NULL,
+};
+
+
+
+/* register service and run main loop */
+
+static char*
+dots_to_slashes(char* dotted)
+{
+    char* slashed = (char*) malloc(strlen(dotted)+2);
+    char* p = slashed;
+    *p++ = '/';
+    strcpy(p, dotted);
+    while (*++p) if (*p == '.') *p = '/';
+    return slashed;
+}
+
+
+int main(int argc, char **argv)
+{
+  DBusConnection *connection;
+  DBusError error;
+  int result;
+  int i;
+  char* service;
+ 
+  if (argc < 3) 
+    {
+      printf("Usage: %s org.laptop.MyActivity cmd args\n", argv[0]);
+      printf("\twhere cmd will be invoked as\n");
+      printf("\tcmd args                           \\\n");
+      printf("\t   bundle_id org.laptop.MyActivity \\\n");
+      printf("\t   activity_id 123ABC...           \\\n");
+      printf("\t   object_id 456DEF...             \\\n");
+      printf("\t   pservice_id 789ACE..            \\\n");
+      printf("\t   uri file:///path/to/file\n");
+      printf("\tas given in the org.laptop.ActivityFactory.create() call\n");
+      exit(1);
+    }
+  prog = argv[0];
+  service = argv[1];
+
+  for (i = 2; i<argc; i++)
+    inst_argv[inst_argc++] = argv[i];
+  inst_argv[inst_argc++] = "bundle_id";
+  inst_argv[inst_argc++] = service;
+  
+  signal(SIGCHLD, sigchld_handler);
+
+  dbus_error_init(&error);
+
+  connection = dbus_bus_get(DBUS_BUS_SESSION, &error);
+  if (dbus_error_is_set(&error))
+    {
+      fprintf(stderr, "%s: could not get bus connection: %s\n", prog, error.message);
+      exit(1);
+    }
+
+  result = dbus_bus_request_name(connection, 
+				 service, 
+				 DBUS_NAME_FLAG_DO_NOT_QUEUE, 
+				 &error);
+  if (dbus_error_is_set(&error))
+    {
+      fprintf(stderr, "%s: could not aquire name %s: %s\n", prog, service, error.message);
+      exit(1);
+    }
+  if (result != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER)
+    {
+      fprintf(stderr, "%: could not become primary owner of %s\n", prog, service);
+      exit(1);
+   }
+  
+  dbus_connection_register_object_path(connection, 
+				       dots_to_slashes(service), 
+				       &factory_vtable, 
+				       NULL);
+
+  while (dbus_connection_read_write_dispatch(connection, -1))
+     ;
+}
diff --git a/configure.ac b/configure.ac
index 4e10aff..77f78f0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,6 +19,8 @@ AC_PATH_PROG(PYGTK_CODEGEN, pygtk-codegen-2.0, no)
 
 PKG_CHECK_MODULES(SHELL, pygtk-2.0 gtk+-2.0)
 
+PKG_CHECK_MODULES(NATIVE_FACTORY, dbus-1)
+
 PKG_CHECK_MODULES(LIB, gtk+-2.0)
 PKG_CHECK_MODULES(LIB_BINDINGS, pygtk-2.0)
 
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