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  1.   ae235bd2bbff9747309382167117d4240f16f1ba
  2.   gio
  3.   tests
  4.   httpd.c
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#include <gio/gio.h>
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#include <string.h>
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static int port = 8080;
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static char *root = NULL;
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static GOptionEntry cmd_entries[] = {
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  {"port", 'p', 0, G_OPTION_ARG_INT, &port,
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   "Local port to bind to", NULL},
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  {NULL}
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};
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static void
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send_error (GOutputStream *out,
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	    int error_code,
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	    const char *reason)
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{
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  char *res;
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  res = g_strdup_printf ("HTTP/1.0 %d %s\r\n\r\n"
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			 "<html><head><title>%d %s</title></head>"
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			 "<body>%s</body></html>",
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			 error_code, reason,
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			 error_code, reason,
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			 reason);
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  g_output_stream_write_all (out, res, strlen (res), NULL, NULL, NULL);
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  g_free (res);
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}
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static gboolean
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handler (GThreadedSocketService *service,
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	 GSocketConnection      *connection,
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	 GSocketListener        *listener,
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	 gpointer                user_data)
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{
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  GOutputStream *out;
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  GInputStream *in;
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  GFileInputStream *file_in;
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  GDataInputStream *data;
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  char *line, *escaped, *tmp, *query, *unescaped, *path, *version;
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  GFile *f;
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  GError *error;
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  GFileInfo *info;
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  GString *s;
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  in = g_io_stream_get_input_stream (G_IO_STREAM (connection));
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  out = g_io_stream_get_output_stream (G_IO_STREAM (connection));
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  data = g_data_input_stream_new (in);
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  /* Be tolerant of input */
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  g_data_input_stream_set_newline_type (data, G_DATA_STREAM_NEWLINE_TYPE_ANY);
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  line = g_data_input_stream_read_line (data, NULL, NULL, NULL);
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  if (line == NULL)
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    {
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      send_error (out, 400, "Invalid request");
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      goto out;
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    }
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  if (!g_str_has_prefix (line, "GET "))
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    {
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      send_error (out, 501, "Only GET implemented");
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      goto out;
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    }
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  escaped = line + 4; /* Skip "GET " */
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  version = NULL;
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  tmp = strchr (escaped, ' ');
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  if (tmp == NULL)
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    {
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      send_error (out, 400, "Bad Request");
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      goto out;
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    }
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  *tmp = 0;
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  version = tmp + 1;
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  if (!g_str_has_prefix (version, "HTTP/1."))
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    {
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      send_error(out, 505, "HTTP Version Not Supported");
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      goto out;
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    }
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  query = strchr (escaped, '?');
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  if (query != NULL)
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    *query++ = 0;
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  unescaped = g_uri_unescape_string (escaped, NULL);
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  path = g_build_filename (root, unescaped, NULL);
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  g_free (unescaped);
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  f = g_file_new_for_path (path);
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  g_free (path);
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  error = NULL;
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  file_in = g_file_read (f, NULL, &error);
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  if (file_in == NULL)
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    {
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      send_error (out, 404, error->message);
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      g_error_free (error);
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      goto out;
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    }
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  s = g_string_new ("HTTP/1.0 200 OK\r\n");
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  info = g_file_input_stream_query_info (file_in,
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					 G_FILE_ATTRIBUTE_STANDARD_SIZE ","
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					 G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
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					 NULL, NULL);
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  if (info)
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    {
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      const char *content_type;
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      char *mime_type;
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      if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_SIZE))
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	g_string_append_printf (s, "Content-Length: %"G_GINT64_FORMAT"\r\n",
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				g_file_info_get_size (info));
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      content_type = g_file_info_get_content_type (info);
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      if (content_type)
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	{
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	  mime_type = g_content_type_get_mime_type (content_type);
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	  if (mime_type)
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	    {
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	      g_string_append_printf (s, "Content-Type: %s\r\n",
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				      mime_type);
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	      g_free (mime_type);
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	    }
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	}
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    }
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  g_string_append (s, "\r\n");
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  if (g_output_stream_write_all (out,
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				 s->str, s->len,
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				 NULL, NULL, NULL))
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    {
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      g_output_stream_splice (out,
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			      G_INPUT_STREAM (file_in),
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			      0, NULL, NULL);
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    }
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  g_string_free (s, TRUE);
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  g_input_stream_close (G_INPUT_STREAM (file_in), NULL, NULL);
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  g_object_unref (file_in);
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 out:
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  g_object_unref (data);
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  return TRUE;
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}
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int
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main (int argc, char *argv[])
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{
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  GSocketService *service;
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  GOptionContext *context;
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  GError *error = NULL;
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  context = g_option_context_new ("<http root dir> - Simple HTTP server");
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  g_option_context_add_main_entries (context, cmd_entries, NULL);
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  if (!g_option_context_parse (context, &argc, &argv, &error))
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    {
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      g_printerr ("%s: %s\n", argv[0], error->message);
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      return 1;
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    }
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  if (argc != 2)
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    {
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      g_printerr ("Root directory not specified\n");
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      return 1;
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    }
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  root = g_strdup (argv[1]);
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  service = g_threaded_socket_service_new (10);
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  if (!g_socket_listener_add_inet_port (G_SOCKET_LISTENER (service),
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					port,
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					NULL,
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					&error))
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    {
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      g_printerr ("%s: %s\n", argv[0], error->message);
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      return 1;
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    }
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  g_print ("Http server listening on port %d\n", port);
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  g_signal_connect (service, "run", G_CALLBACK (handler), NULL);
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  g_main_loop_run (g_main_loop_new (NULL, FALSE));
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  g_assert_not_reached ();
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}

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