diff options
Diffstat (limited to 'src/mm-fcc-unlock-dispatcher.c')
| -rw-r--r-- | src/mm-fcc-unlock-dispatcher.c | 319 |
1 files changed, 0 insertions, 319 deletions
diff --git a/src/mm-fcc-unlock-dispatcher.c b/src/mm-fcc-unlock-dispatcher.c deleted file mode 100644 index a033d998..00000000 --- a/src/mm-fcc-unlock-dispatcher.c +++ /dev/null @@ -1,319 +0,0 @@ -/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details: - * - * Copyright (C) 2021 Aleksander Morgado <aleksander@aleksander.es> - */ - -#include <config.h> -#include <sys/stat.h> - -#include <ModemManager.h> -#include "mm-errors-types.h" -#include "mm-utils.h" -#include "mm-log-object.h" -#include "mm-fcc-unlock-dispatcher.h" - -#if !defined FCCUNLOCKDIRPACKAGE -# error FCCUNLOCKDIRPACKAGE must be defined at build time -#endif - -#if !defined FCCUNLOCKDIRUSER -# error FCCUNLOCKDIRUSER must be defined at build time -#endif - -/* Maximum time a FCC unlock command is allowed to run before - * us killing it */ -#define MAX_FCC_UNLOCK_EXEC_TIME_SECS 5 - -struct _MMFccUnlockDispatcher { - GObject parent; - GSubprocessLauncher *launcher; -}; - -struct _MMFccUnlockDispatcherClass { - GObjectClass parent; -}; - -static void log_object_iface_init (MMLogObjectInterface *iface); - -G_DEFINE_TYPE_EXTENDED (MMFccUnlockDispatcher, mm_fcc_unlock_dispatcher, G_TYPE_OBJECT, 0, - G_IMPLEMENT_INTERFACE (MM_TYPE_LOG_OBJECT, log_object_iface_init)) - -/*****************************************************************************/ - -static gchar * -log_object_build_id (MMLogObject *_self) -{ - return g_strdup ("fcc-unlock-dispatcher"); -} - -/*****************************************************************************/ - -typedef struct { - gchar *filename; - GSubprocess *subprocess; - guint timeout_id; -} RunContext; - -static void -run_context_free (RunContext *ctx) -{ - g_assert (!ctx->timeout_id); - g_clear_object (&ctx->subprocess); - g_free (ctx->filename); - g_slice_free (RunContext, ctx); -} - -gboolean -mm_fcc_unlock_dispatcher_run_finish (MMFccUnlockDispatcher *self, - GAsyncResult *res, - GError **error) -{ - return g_task_propagate_boolean (G_TASK (res), error); -} - -static gboolean -subprocess_wait_timed_out (GTask *task) -{ - MMFccUnlockDispatcher *self; - RunContext *ctx; - - self = g_task_get_source_object (task); - ctx = g_task_get_task_data (task); - - mm_obj_warn (self, "forcing exit on %s FCC unlock operation", ctx->filename); - g_subprocess_force_exit (ctx->subprocess); - - ctx->timeout_id = 0; - return G_SOURCE_REMOVE; -} - -static void -subprocess_wait_ready (GSubprocess *subprocess, - GAsyncResult *res, - GTask *task) -{ - GError *error = NULL; - RunContext *ctx; - - /* cleanup timeout before any return */ - ctx = g_task_get_task_data (task); - if (ctx->timeout_id) { - g_source_remove (ctx->timeout_id); - ctx->timeout_id = 0; - } - - if (!g_subprocess_wait_finish (subprocess, res, &error)) { - g_prefix_error (&error, "FCC unlock operation wait failed: "); - g_task_return_error (task, error); - } else if (!g_subprocess_get_successful (subprocess)) { - if (g_subprocess_get_if_signaled (subprocess)) - g_task_return_new_error (task, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, - "FCC unlock operation aborted with signal %d", - g_subprocess_get_term_sig (subprocess)); - else if (g_subprocess_get_if_exited (subprocess)) - g_task_return_new_error (task, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, - "FCC unlock operation finished with status %d", - g_subprocess_get_exit_status (subprocess)); - else - g_task_return_new_error (task, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, - "FCC unlock operation failed"); - } else - g_task_return_boolean (task, TRUE); - g_object_unref (task); -} - -static gboolean -validate_file (const gchar *path, - GError **error) -{ - g_autoptr(GFile) file = NULL; - g_autoptr(GFileInfo) file_info = NULL; - guint32 file_mode; - guint32 file_uid; - - file = g_file_new_for_path (path); - file_info = g_file_query_info (file, - (G_FILE_ATTRIBUTE_STANDARD_SIZE "," - G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET "," - G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK "," - G_FILE_ATTRIBUTE_UNIX_MODE "," - G_FILE_ATTRIBUTE_UNIX_UID), - G_FILE_QUERY_INFO_NONE, - NULL, - error); - if (!file_info) - return FALSE; - - if (g_file_info_get_is_symlink (file_info)) { - const gchar *link_target; - - link_target = g_file_info_get_symlink_target (file_info); - if (g_strcmp0 (link_target, "/dev/null") == 0) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "Link '%s' to /dev/null is not executable", path); - return FALSE; - } - } - - if (g_file_info_get_size (file_info) == 0) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "File '%s' is empty", path); - return FALSE; - } - - file_uid = g_file_info_get_attribute_uint32 (file_info, G_FILE_ATTRIBUTE_UNIX_UID); - if (file_uid != 0) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "File '%s' not owned by root", path); - return FALSE; - } - - file_mode = g_file_info_get_attribute_uint32 (file_info, G_FILE_ATTRIBUTE_UNIX_MODE); - if (!S_ISREG (file_mode)) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "File '%s' is not regular", path); - return FALSE; - } - if (file_mode & (S_IWGRP | S_IWOTH)) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "File '%s' is writable by group or other", path); - return FALSE; - } - if (file_mode & S_ISUID) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "File '%s' is set-UID", path); - return FALSE; - } - if (!(file_mode & S_IXUSR)) { - g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_ABORTED, - "File '%s' is not executable by the owner", path); - return FALSE; - } - - return TRUE; -} - -void -mm_fcc_unlock_dispatcher_run (MMFccUnlockDispatcher *self, - guint vid, - guint pid, - const gchar *modem_dbus_path, - const GStrv modem_ports, - GCancellable *cancellable, - GAsyncReadyCallback callback, - gpointer user_data) -{ - GTask *task; - RunContext *ctx; - guint i; - const gchar *enabled_dirs[] = { - FCCUNLOCKDIRUSER, /* sysconfdir */ - FCCUNLOCKDIRPACKAGE, /* libdir */ - }; - - task = g_task_new (self, cancellable, callback, user_data); - ctx = g_slice_new0 (RunContext); - g_task_set_task_data (task, ctx, (GDestroyNotify) run_context_free); - - ctx->filename = g_strdup_printf ("%04x:%04x", vid, pid); - - for (i = 0; i < G_N_ELEMENTS (enabled_dirs); i++) { - GPtrArray *aux; - g_auto(GStrv) argv = NULL; - g_autofree gchar *path = NULL; - g_autoptr(GError) error = NULL; - guint j; - - path = g_build_path (G_DIR_SEPARATOR_S, enabled_dirs[i], ctx->filename, NULL); - - /* Validation checks to see if we should run it or not */ - if (!validate_file (path, &error)) { - mm_obj_dbg (self, "Cannot run FCC unlock operation from %s: %s", - path, error->message); - continue; - } - - /* build argv */ - aux = g_ptr_array_new (); - g_ptr_array_add (aux, g_steal_pointer (&path)); - g_ptr_array_add (aux, g_strdup (modem_dbus_path)); - for (j = 0; modem_ports && modem_ports[j]; j++) - g_ptr_array_add (aux, g_strdup (modem_ports[j])); - g_ptr_array_add (aux, NULL); - argv = (GStrv) g_ptr_array_free (aux, FALSE); - - /* create and launch subprocess */ - ctx->subprocess = g_subprocess_launcher_spawnv (self->launcher, - (const gchar * const *)argv, - &error); - if (!ctx->subprocess) { - g_prefix_error (&error, "FCC unlock operation launch from %s failed: ", path); - g_task_return_error (task, error); - g_object_unref (task); - return; - } - - /* setup timeout */ - ctx->timeout_id = g_timeout_add_seconds (MAX_FCC_UNLOCK_EXEC_TIME_SECS, - (GSourceFunc)subprocess_wait_timed_out, - task); - - /* wait for subprocess exit */ - g_subprocess_wait_async (ctx->subprocess, - cancellable, - (GAsyncReadyCallback)subprocess_wait_ready, - task); - return; - } - - g_task_return_new_error (task, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, - "FCC unlock operation launch aborted: no valid program found"); - g_object_unref (task); -} - -/*****************************************************************************/ - -static void -mm_fcc_unlock_dispatcher_init (MMFccUnlockDispatcher *self) -{ - self->launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_SILENCE); - - /* inherit parent's environment */ - g_subprocess_launcher_set_environ (self->launcher, NULL); -} - -static void -dispose (GObject *object) -{ - MMFccUnlockDispatcher *self = MM_FCC_UNLOCK_DISPATCHER (object); - - g_clear_object (&self->launcher); - - G_OBJECT_CLASS (mm_fcc_unlock_dispatcher_parent_class)->dispose (object); -} - -static void -log_object_iface_init (MMLogObjectInterface *iface) -{ - iface->build_id = log_object_build_id; -} - -static void -mm_fcc_unlock_dispatcher_class_init (MMFccUnlockDispatcherClass *class) -{ - GObjectClass *object_class = G_OBJECT_CLASS (class); - - object_class->dispose = dispose; -} - -MM_DEFINE_SINGLETON_GETTER (MMFccUnlockDispatcher, mm_fcc_unlock_dispatcher_get, MM_TYPE_FCC_UNLOCK_DISPATCHER) |