2af1a612e9
Various bits of the code didn't check if response was valid
or not during error conditions, and when an error occurs
sometimes it'll be NULL (since not all errors are translated
errors from the modem, some are serial or general ones). We
have to make sure we don't try to use response->str when
response doesn't exist.
Found in the generic CDMA code likely as a result of
d5d9eec2b5 but was a bug long
before that commit happened anyway.
247 lines
8.6 KiB
C
247 lines
8.6 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details:
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*
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* Copyright (C) 2008 - 2009 Novell, Inc.
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* Copyright (C) 2009 - 2010 Red Hat, Inc.
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*/
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#include <string.h>
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#include <gmodule.h>
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#include "mm-plugin-x22x.h"
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#include "mm-modem-x22x-gsm.h"
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#include "mm-generic-gsm.h"
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#include "mm-modem-helpers.h"
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G_DEFINE_TYPE (MMPluginX22x, mm_plugin_x22x, MM_TYPE_PLUGIN_BASE)
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int mm_plugin_major_version = MM_PLUGIN_MAJOR_VERSION;
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int mm_plugin_minor_version = MM_PLUGIN_MINOR_VERSION;
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G_MODULE_EXPORT MMPlugin *
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mm_plugin_create (void)
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{
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return MM_PLUGIN (g_object_new (MM_TYPE_PLUGIN_X22X,
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MM_PLUGIN_BASE_NAME, "X22X",
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NULL));
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}
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/*****************************************************************************/
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static guint32
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get_level_for_capabilities (guint32 capabilities)
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{
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/* These modems have the same vendor ID as a few of the other
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* Alcatel/TCT/T&A modems, and the longcheer plugin will try to claim them
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* too. So we provide a higher support level here to make sure this
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* plugin tries to grab it's supported devices first.
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*/
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if (capabilities & MM_PLUGIN_BASE_PORT_CAP_GSM)
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return 20;
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if (capabilities & MM_PLUGIN_BASE_PORT_CAP_QCDM)
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return 20;
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return 0;
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}
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static void
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probe_result (MMPluginBase *base,
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MMPluginBaseSupportsTask *task,
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guint32 capabilities,
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gpointer user_data)
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{
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mm_plugin_base_supports_task_complete (task, get_level_for_capabilities (capabilities));
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}
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static gboolean
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custom_init_response_cb (MMPluginBaseSupportsTask *task,
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GString *response,
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GError *error,
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guint32 tries,
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gboolean *out_stop,
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guint32 *out_level,
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gpointer user_data)
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{
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const char *p;
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if (error)
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return tries <= 4 ? TRUE : FALSE;
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/* Note the lack of a ':' on the GMR; the X200 doesn't send one */
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g_assert (response);
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p = mm_strip_tag (response->str, "AT+GMR");
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if (*p != 'L') {
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/* X200 modems have a GMR firmware revision that starts with 'L', and
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* as far as I can tell X060s devices have a revision starting with 'C'.
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* So use that to determine if the device is an X200, which this plugin
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* does supports.
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*/
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*out_level = 0;
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*out_stop = TRUE;
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return FALSE;
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}
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/* Continue with generic probing */
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return FALSE;
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}
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static MMPluginSupportsResult
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supports_port (MMPluginBase *base,
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MMModem *existing,
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MMPluginBaseSupportsTask *task)
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{
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GUdevDevice *port;
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guint16 vendor = 0, product = 0;
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const char *subsys, *name;
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/* Can't do anything with non-serial ports */
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port = mm_plugin_base_supports_task_get_port (task);
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if (strcmp (g_udev_device_get_subsystem (port), "tty"))
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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subsys = g_udev_device_get_subsystem (port);
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name = g_udev_device_get_name (port);
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if (!mm_plugin_base_get_device_ids (base, subsys, name, &vendor, &product))
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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/* Only TCT/T&A for now */
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if (vendor != 0x1bbb)
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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/* If the port wasn't tagged, we don't support it */
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if (!g_udev_device_get_property_as_boolean (port, "ID_MM_X22X_TAGGED"))
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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/* Check if a previous probing was already launched in this port */
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if (mm_plugin_base_supports_task_propagate_cached (task)) {
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guint32 level;
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/* A previous probing was already done, use its results */
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level = get_level_for_capabilities (mm_plugin_base_supports_task_get_probed_capabilities (task));
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if (level) {
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mm_plugin_base_supports_task_complete (task, level);
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return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;
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}
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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}
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/* TCT/Alcatel in their infinite wisdom assigned the same USB VID/PID to
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* the x060s (Longcheer firmware) and the x200 (X22X, this plugin) and thus
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* we can't tell them apart via udev rules. Worse, they both report the
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* same +GMM and +GMI, so we're left with just +GMR which is a sketchy way
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* to tell modems apart. We can't really use X22X-specific commands
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* like AT+SSND because we're not sure if they work when the SIM PIN has not
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* been entered yet; many modems have a limited command parser before the
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* SIM is unlocked.
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*/
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if (vendor == 0x1bbb && product == 0x0000) {
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mm_plugin_base_supports_task_add_custom_init_command (task,
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"AT+GMR",
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3,
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custom_init_response_cb,
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NULL);
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}
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/* Otherwise kick off a probe */
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if (mm_plugin_base_probe_port (base, task, 100000, NULL))
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return MM_PLUGIN_SUPPORTS_PORT_IN_PROGRESS;
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return MM_PLUGIN_SUPPORTS_PORT_UNSUPPORTED;
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}
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static MMModem *
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grab_port (MMPluginBase *base,
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MMModem *existing,
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MMPluginBaseSupportsTask *task,
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GError **error)
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{
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GUdevDevice *port = NULL;
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MMModem *modem = NULL;
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const char *name, *subsys, *sysfs_path;
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guint32 caps;
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MMPortType ptype = MM_PORT_TYPE_UNKNOWN;
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guint16 vendor = 0, product = 0;
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port = mm_plugin_base_supports_task_get_port (task);
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g_assert (port);
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/* Look for port type hints; just probing can't distinguish which port should
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* be the data/primary port on these devices. We have to tag them based on
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* what the Windows .INF files say the port layout should be.
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*/
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if (g_udev_device_get_property_as_boolean (port, "ID_MM_X22X_PORT_TYPE_MODEM"))
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ptype = MM_PORT_TYPE_PRIMARY;
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else if (g_udev_device_get_property_as_boolean (port, "ID_MM_X22X_PORT_TYPE_AUX"))
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ptype = MM_PORT_TYPE_SECONDARY;
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/* If the device was tagged by the udev rules, then ignore any other ports
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* to guard against race conditions if a device just happens to show up
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* with more than two AT-capable ports.
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*/
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if ( (ptype == MM_PORT_TYPE_UNKNOWN)
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&& g_udev_device_get_property_as_boolean (port, "ID_MM_X22X_TAGGED"))
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ptype = MM_PORT_TYPE_IGNORED;
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subsys = g_udev_device_get_subsystem (port);
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name = g_udev_device_get_name (port);
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if (!mm_plugin_base_get_device_ids (base, subsys, name, &vendor, &product)) {
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g_set_error (error, 0, 0, "Could not get modem product ID.");
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return NULL;
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}
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caps = mm_plugin_base_supports_task_get_probed_capabilities (task);
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sysfs_path = mm_plugin_base_supports_task_get_physdev_path (task);
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if (!existing) {
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if (caps & MM_PLUGIN_BASE_PORT_CAP_GSM) {
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modem = mm_modem_x22x_gsm_new (sysfs_path,
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mm_plugin_base_supports_task_get_driver (task),
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mm_plugin_get_name (MM_PLUGIN (base)),
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vendor,
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product);
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}
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if (modem) {
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if (!mm_modem_grab_port (modem, subsys, name, ptype, NULL, error)) {
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g_object_unref (modem);
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return NULL;
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}
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}
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} else if (get_level_for_capabilities (caps)) {
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if (caps & MM_PLUGIN_BASE_PORT_CAP_QCDM)
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ptype = MM_PORT_TYPE_QCDM;
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modem = existing;
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if (!mm_modem_grab_port (modem, subsys, name, ptype, NULL, error))
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return NULL;
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}
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return modem;
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}
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/*****************************************************************************/
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static void
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mm_plugin_x22x_init (MMPluginX22x *self)
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{
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g_signal_connect (self, "probe-result", G_CALLBACK (probe_result), NULL);
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}
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static void
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mm_plugin_x22x_class_init (MMPluginX22xClass *klass)
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{
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MMPluginBaseClass *pb_class = MM_PLUGIN_BASE_CLASS (klass);
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pb_class->supports_port = supports_port;
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pb_class->grab_port = grab_port;
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}
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