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/*
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* Copyright (c) 2003-2007 Andrea Luzzardi <scox@sig11.org>
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*
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* This file is part of the pam_usb project. pam_usb is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* pam_usb is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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* Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#ifndef __GNU__
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#include <sys/mount.h>
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#endif
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#include "mem.h"
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#include "conf.h"
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#include "log.h"
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#include "hal.h"
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#include "volume.h"
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static int pusb_volume_mount(t_pusb_options *opts, char *udi,
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DBusConnection *dbus)
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{
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char command[1024];
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char tempname[32];
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const char *devname;
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snprintf(tempname, sizeof(tempname), "pam_usb%d", getpid());
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if (!(devname = pusb_hal_get_string_property(dbus, udi, "DeviceFile")))
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{
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log_error("Unable to retrieve device filename\n");
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return (0);
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}
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log_debug("Attempting to mount device %s with label %s\n",
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devname, tempname);
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snprintf(command, sizeof(command), "pmount -A -s %s %s",
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devname, tempname);
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log_debug("Executing \"%s\"\n", command);
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if (system(command) != 0)
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{
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log_error("Mount failed\n");
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return (0);
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}
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log_debug("Mount succeeded.\n");
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return (1);
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}
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static char *pusb_volume_mount_path(t_pusb_options *opts, char *udi, DBusConnection* dbus)
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{
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dbus_bool_t is_mounted;
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if (!pusb_hal_get_bool_property(dbus, udi, "DeviceIsMounted", &is_mounted))
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{
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return (NULL);
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}
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if (is_mounted != TRUE)
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{
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log_debug("Device %s is not mounted\n", udi);
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return (NULL);
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}
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int n_mount;
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char **mount_pathes = pusb_hal_get_string_array_property(dbus, udi, "DeviceMountPaths", &n_mount);
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if (!mount_pathes)
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{
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log_debug("Failed to retrieve device %s mount path\n", udi);
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return (NULL);
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}
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if (n_mount > 1)
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{
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log_debug("Device %s is mounted more than once\n", udi);
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}
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char *mount_path = xstrdup(mount_pathes[0]);
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pusb_hal_free_string_array(mount_pathes, n_mount);
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log_debug("Device %s is mounted on %s\n", udi, mount_path);
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return (mount_path);
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}
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static char *pusb_volume_probe(t_pusb_options *opts,
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DBusConnection *dbus)
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{
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int maxtries = 0;
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int i;
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if (!*(opts->device.volume_uuid))
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{
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log_debug("No UUID configured for device\n");
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return (NULL);
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}
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log_debug("Searching for volume with uuid %s\n", opts->device.volume_uuid);
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maxtries = ((opts->probe_timeout * 1000000) / 250000);
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for (i = 0; i < maxtries; ++i)
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{
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char *udi = NULL;
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if (i == 1)
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log_info("Probing volume (this could take a while)...\n");
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udi = pusb_hal_find_item(dbus,
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"IdUuid", opts->device.volume_uuid,
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NULL);
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if (!udi)
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{
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usleep(250000);
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continue;
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}
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return (udi);
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}
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return (NULL);
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}
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char *pusb_volume_get(t_pusb_options *opts, DBusConnection *dbus)
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{
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char *volume_udi;
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char *mount_point;
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if (!(volume_udi = pusb_volume_probe(opts, dbus)))
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return (NULL);
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log_debug("Found volume %s\n", opts->device.volume_uuid);
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mount_point = pusb_volume_mount_path(opts, volume_udi, dbus);
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if (mount_point)
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{
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log_debug("Volume is already mounted.\n");
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return (mount_point);
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}
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if (!pusb_volume_mount(opts, volume_udi, dbus))
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{
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xfree(volume_udi);
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return (NULL);
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}
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mount_point = pusb_volume_mount_path(opts, volume_udi, dbus);
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if (!mount_point)
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{
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log_error("Unable to retrieve %s mount point\n", volume_udi);
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pusb_volume_destroy(mount_point);
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return (NULL);
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}
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return (mount_point);
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}
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void pusb_volume_destroy(char *mntpoint)
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{
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if (mntpoint && strstr(mntpoint, "pam_usb"))
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{
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char command[1024];
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log_debug("Attempting to umount %s\n",
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mntpoint);
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snprintf(command, sizeof(command), "pumount %s", mntpoint);
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log_debug("Executing \"%s\"\n", command);
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if (!system(command))
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log_debug("Umount succeeded.\n");
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else
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log_error("Unable to umount %s\n", mntpoint);
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}
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xfree(mntpoint);
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}
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