initial commit0.4.0

4 files changed, 232 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a8e9da0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*~
+*.o
+udev-block-notify
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..f207c3f
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,14 @@
+# udev-block-notify - Notify about udev block events
+
+CC	:= gcc
+CFLAGS	+= $(shell pkg-config --cflags --libs libudev) \
+	   $(shell pkg-config --cflags --libs blkid) \
+	   $(shell pkg-config --cflags --libs libnotify)
+VERSION	= $(shell git describe --tags --long)
+
+all: udev-block-notify.c
+	$(CC) $(CFLAGS) -o udev-block-notify udev-block-notify.c \
+		-DVERSION="\"$(VERSION)\""
+
+clean:
+	/bin/rm -f *.o *~ udev-block-notify
diff --git a/udev-block-notify.c b/udev-block-notify.c
new file mode 100644
index 0000000..5e0d6c3
--- /dev/null
+++ b/udev-block-notify.c
@@ -0,0 +1,207 @@
+/*
+ * (C) 2011-2012 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>
+#include <blkid.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	"%s\n%s: <i>%s</i>"
+
+int main (int argc, char ** argv) {
+	blkid_cache cache = NULL;
+	blkid_dev blkdev = NULL;
+	blkid_tag_iterate iter = NULL;
+	char action;
+	char *device = NULL, *icon = NULL, *notifystr = NULL, *read = NULL;
+	const char *type, *value, *devname;
+	fd_set readfds;
+	GError *error = NULL;
+	int fdcount, 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(size_t));
+	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);
+
+                fdcount = 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 = (char *) malloc(strlen(TEXT_ADD) + strlen(device));
+						sprintf(notifystr, TEXT_ADD, device, major, minor);
+						icon = ICON_ADD;
+						break;
+					case 'r':
+						// r: remove
+						notifystr = (char *) malloc(strlen(TEXT_REMOVE) + strlen(device));
+						sprintf(notifystr, TEXT_REMOVE, device, major, minor);
+						icon = ICON_REMOVE;
+						break;
+					case 'm':
+						// m: move
+						notifystr = (char *) malloc(strlen(TEXT_MOVE) + strlen(device));
+						sprintf(notifystr, TEXT_MOVE, device, major, minor);
+						icon = ICON_MOVE;
+						break;
+					case 'c':
+						// c: change
+						notifystr = (char *) malloc(strlen(TEXT_CHANGE) + strlen(device));
+						sprintf(notifystr, TEXT_CHANGE, device, major, minor);
+						icon = ICON_CHANGE;
+						break;
+					default:
+						// we should never get here I think...
+						notifystr = (char *) malloc(strlen(TEXT_DEFAULT) + strlen(device));
+						sprintf(notifystr, TEXT_CHANGE, device, major, minor);
+						icon = ICON_DEFAULT;
+				}
+
+				if (blkid_get_cache(&cache, read) != 0)
+					fprintf(stderr, "%s: Could not get blkid cache.\n", argv[0]);
+
+				if (blkid_probe_all_new(cache) != 0)
+					fprintf(stderr, "%s: Could not probe new devices.\n", argv[0]);
+
+				if (action != 'r') {
+					blkdev = blkid_get_dev(cache, udev_device_get_devnode(dev), BLKID_DEV_NORMAL);
+			
+					if (blkdev) {
+						iter = blkid_tag_iterate_begin(blkdev);
+				
+						while (blkid_tag_next(iter, &type, &value) == 0) {
+							notifystr = (char *) realloc(notifystr, strlen(TEXT_TAG) + strlen(notifystr) + strlen(type) + strlen(value));
+							sprintf(notifystr, TEXT_TAG, notifystr, type, value);
+						}
+	
+						blkid_tag_iterate_end(iter);
+						blkid_put_cache(cache);
+					} else
+						fprintf(stderr, "%s: Could not get blkid device.\n", argv[0]);
+				}
+
+#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;
+}
diff --git a/udev-block-notify.desktop b/udev-block-notify.desktop
new file mode 100644
index 0000000..58521bd
--- /dev/null
+++ b/udev-block-notify.desktop
@@ -0,0 +1,8 @@
+[Desktop Entry]
+Name=Udev Block Notify
+Icon=media-removable
+Exec=/usr/bin/udev-block-notify
+Terminal=false
+Type=Application
+StartupNotify=false
+Categories=Utility