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/*
* (C) 2011-2013 by Christian Hesse <mail@eworm.de>
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <libnotify/notify.h>
#include <libudev.h>
#define PROGNAME "udev-block-notify"
#define NOTIFICATION_TIMEOUT 10000
#ifndef DEBUG
#define DEBUG 0
#endif
#define ICON_ADD "media-removable"
#define ICON_REMOVE "media-removable"
#define ICON_MOVE "media-removable"
#define ICON_CHANGE "media-removable"
#define ICON_DEFAULT "media-removable"
#define TEXT_TOPIC "Udev Block Notification"
#define TEXT_ADD "Device <b>%s</b> (%i:%i) <b>appeared</b>."
#define TEXT_REMOVE "Device <b>%s</b> (%i:%i) <b>disappeared</b>."
#define TEXT_MOVE "Device <b>%s</b> (%i:%i) was <b>renamed</b>."
#define TEXT_CHANGE "Device <b>%s</b> (%i:%i) media <b>changed</b>."
#define TEXT_DEFAULT "Anything happend to <b>%s</b> (%i:%i)... Don't know."
#define TEXT_TAG "\n%s: <i>%s</i>"
int main (int argc, char ** argv) {
char action;
char *device = NULL, *icon = NULL, *notifystr = NULL;
const char *value = NULL;
fd_set readfds;
GError *error = NULL;
int devnum, errcount = 0;
NotifyNotification *notification;
NotifyNotification ***notificationref;
struct udev_device *dev = NULL;
struct udev_monitor *mon = NULL;
struct udev *udev = NULL;
short int *maxminor;
unsigned short int i, major, minor;
printf("%s: %s v%s (compiled: " __DATE__ ", " __TIME__ ")\n", argv[0], PROGNAME, VERSION);
if(!notify_init("Udev-Block-Notification")) {
fprintf(stderr, "%s: Can't create notify.\n", argv[0]);
exit(EXIT_FAILURE);
}
udev = udev_new();
if(!udev) {
fprintf(stderr, "%s: Can't create udev.\n", argv[0]);
exit(EXIT_FAILURE);
}
mon = udev_monitor_new_from_netlink(udev, "udev");
udev_monitor_filter_add_match_subsystem_devtype(mon, "block", NULL);
udev_monitor_enable_receiving(mon);
notificationref = malloc(256 * sizeof(NotifyNotification));
for(i = 0; i < 256; i++)
notificationref[i] = NULL;
maxminor = malloc(256 * sizeof(short int));
for(i = 0; i < 256; i++)
maxminor[i] = -1;
while (1) {
FD_ZERO(&readfds);
if (mon != NULL)
FD_SET(udev_monitor_get_fd(mon), &readfds);
select(udev_monitor_get_fd(mon) + 1, &readfds, NULL, NULL, NULL);
if ((mon != NULL) && FD_ISSET(udev_monitor_get_fd(mon), &readfds)) {
dev = udev_monitor_receive_device(mon);
if(dev) {
device = (char *) udev_device_get_sysname(dev);
devnum = udev_device_get_devnum(dev);
major = devnum / 256;
minor = devnum - (major * 256);
action = udev_device_get_action(dev)[0];
switch(action) {
case 'a':
// a: add
notifystr = malloc(strlen(TEXT_ADD) + strlen(device) + 5);
sprintf(notifystr, TEXT_ADD, device, major, minor);
icon = ICON_ADD;
break;
case 'r':
// r: remove
notifystr = malloc(strlen(TEXT_REMOVE) + strlen(device) + 5);
sprintf(notifystr, TEXT_REMOVE, device, major, minor);
icon = ICON_REMOVE;
break;
case 'm':
// m: move
notifystr = malloc(strlen(TEXT_MOVE) + strlen(device) + 5);
sprintf(notifystr, TEXT_MOVE, device, major, minor);
icon = ICON_MOVE;
break;
case 'c':
// c: change
notifystr = malloc(strlen(TEXT_CHANGE) + strlen(device) + 5);
sprintf(notifystr, TEXT_CHANGE, device, major, minor);
icon = ICON_CHANGE;
break;
default:
// we should never get here I think...
notifystr = malloc(strlen(TEXT_DEFAULT) + strlen(device) + 5);
sprintf(notifystr, TEXT_CHANGE, device, major, minor);
icon = ICON_DEFAULT;
}
if (action != 'r') {
if ((value = udev_device_get_property_value(dev, "ID_FS_LABEL")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 5 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "Label", value);
}
if ((value = udev_device_get_property_value(dev, "ID_FS_TYPE")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 4 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "Type", value);
}
if ((value = udev_device_get_property_value(dev, "ID_FS_USAGE")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 5 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "Usage", value);
}
if ((value = udev_device_get_property_value(dev, "ID_FS_UUID")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 4 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "UUID", value);
}
if ((value = udev_device_get_property_value(dev, "ID_PART_TABLE_TYPE")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 14 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "Partition Type", value);
}
if ((value = udev_device_get_property_value(dev, "ID_PART_TABLE_NAME")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 14 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "Partition Name", value);
}
if ((value = udev_device_get_property_value(dev, "ID_PART_ENTRY_TYPE")) != NULL) {
notifystr = realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + 14 + strlen(value));
sprintf(notifystr + strlen(notifystr), TEXT_TAG, "Partition UUID", value);
}
}
#if DEBUG
printf("%s: %s\n", argv[0], notifystr);
#endif
if (maxminor[major] < minor) {
notificationref[major] = realloc(notificationref[major], (minor + 1) * sizeof(size_t));
while(maxminor[major] < minor)
notificationref[major][++maxminor[major]] = NULL;
}
if (notificationref[major][minor] == NULL) {
notification = notify_notification_new(TEXT_TOPIC, notifystr, icon);
notificationref[major][minor] = notification;
} else {
notification = notificationref[major][minor];
notify_notification_update(notification, TEXT_TOPIC, notifystr, icon);
}
notify_notification_set_timeout(notification, NOTIFICATION_TIMEOUT);
notify_notification_set_category(notification, PROGNAME);
notify_notification_set_urgency (notification, NOTIFY_URGENCY_NORMAL);
while(!notify_notification_show(notification, &error)) {
if (errcount > 1) {
fprintf(stderr, "%s: Looks like we can not reconnect to notification daemon... Exiting.\n", argv[0]);
exit(EXIT_FAILURE);
} else {
g_printerr("%s: Error \"%s\" while trying to show notification. Trying to reconnect.\n", argv[0], error->message);
errcount++;
g_error_free(error);
error = NULL;
notify_uninit();
usleep(500 * 1000);
if(!notify_init("Udev-Block-Notification")) {
fprintf(stderr, "%s: Can't create notify.\n", argv[0]);
exit(EXIT_FAILURE);
}
}
}
errcount = 0;
free(notifystr);
udev_device_unref(dev);
}
// This is not really needed... But we want to make shure not to eat 100% CPU if anything breaks. ;)
usleep(50 * 1000);
}
}
udev_unref(udev);
return EXIT_SUCCESS;
}
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