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-rw-r--r--tsak/main.cpp65
1 files changed, 40 insertions, 25 deletions
diff --git a/tsak/main.cpp b/tsak/main.cpp
index 726f779fa..646a9d45d 100644
--- a/tsak/main.cpp
+++ b/tsak/main.cpp
@@ -1,6 +1,6 @@
/*
Copyright 2010 Adam Marchetti
-Copyright 2011-2012 Timothy Pearson <[email protected]>
+Copyright 2011-2013 Timothy Pearson <[email protected]>
This file is part of tsak, the TDE Secure Attention Key daemon
@@ -132,7 +132,7 @@ void tsak_friendly_termination() {
// Wait for process termination
sleep(1);
- fprintf(stderr, "tsak terminated by external request\n");
+ fprintf(stderr, "[tsak] tsak terminated by external request\n");
exit(17);
}
@@ -359,7 +359,7 @@ void broadcast_sak()
int i;
for (i=0;i<255;i++) {
if (write(mPipe_fd_out, "SAK\n\r", 6) < 0) {
- fprintf(stderr, "Unable to send SAK signal to clients\n");
+ fprintf(stderr, "[tsak] Unable to send SAK signal to clients\n");
}
}
}
@@ -368,7 +368,7 @@ void restart_tsak()
{
int i;
- fprintf(stderr, "Forcibly terminating...\n");
+ fprintf(stderr, "[tsak] Forcibly terminating...\n");
// Close down all child processes
for (i=0; i<MAX_KEYBOARDS; i++) {
@@ -386,7 +386,7 @@ void restart_tsak()
// Release all exclusive keyboard locks
for (int current_keyboard=0;current_keyboard<keyboard_fd_num;current_keyboard++) {
if(ioctl(keyboard_fds[current_keyboard], EVIOCGRAB, 0) < 0) {
- fprintf(stderr, "Failed to release exclusive input device lock");
+ fprintf(stderr, "[tsak] Failed to release exclusive input device lock");
}
close(keyboard_fds[current_keyboard]);
}
@@ -471,11 +471,11 @@ int main (int argc, char *argv[])
if (depcheck == false) {
// Check for existing file locks
if (!checkFileLock()) {
- fprintf(stderr, "Another instance of this program is already running [1]\n");
+ fprintf(stderr, "[tsak] Another instance of this program is already running [1]\n");
return 8;
}
if (!setupLockingPipe(true)) {
- fprintf(stderr, "Another instance of this program is already running [2]\n");
+ fprintf(stderr, "[tsak] Another instance of this program is already running [2]\n");
return 8;
}
}
@@ -484,7 +484,7 @@ int main (int argc, char *argv[])
PipeHandler controlpipe;
if (depcheck == false) {
if (!setupPipe()) {
- fprintf(stderr, "Another instance of this program is already running\n");
+ fprintf(stderr, "[tsak] Another instance of this program is already running\n");
return 8;
}
}
@@ -525,13 +525,13 @@ int main (int argc, char *argv[])
}
}
else {
- fprintf(stderr, "Found %d keyboard(s)\n", keyboard_fd_num);
+ fprintf(stderr, "[tsak] Found %d keyboard(s)\n", keyboard_fd_num);
can_proceed = true;
for (current_keyboard=0;current_keyboard<keyboard_fd_num;current_keyboard++) {
// Print Device Name
ioctl (keyboard_fds[current_keyboard], EVIOCGNAME (sizeof (name)), name);
- fprintf(stderr, "Reading from keyboard: (%s)\n", name);
+ fprintf(stderr, "[tsak] Reading from keyboard: (%s)\n", name);
// Create filtered virtual output device
devout[current_keyboard]=open("/dev/misc/uinput",O_RDWR|O_NONBLOCK);
@@ -543,7 +543,7 @@ int main (int argc, char *argv[])
}
if (devout[current_keyboard]<0) {
can_proceed = false;
- fprintf(stderr, "Unable to open /dev/uinput or /dev/misc/uinput (char device 10:223).\nPossible causes:\n 1) Device node does not exist\n 2) Kernel not compiled with evdev [INPUT_EVDEV] and uinput [INPUT_UINPUT] user level driver support\n 3) Permission denied.\n");
+ fprintf(stderr, "[tsak] Unable to open /dev/uinput or /dev/misc/uinput (char device 10:223).\nPossible causes:\n 1) Device node does not exist\n 2) Kernel not compiled with evdev [INPUT_EVDEV] and uinput [INPUT_UINPUT] user level driver support\n 3) Permission denied.\n");
perror("open(\"/dev/uinput\")");
if (established)
sleep(1);
@@ -560,7 +560,7 @@ int main (int argc, char *argv[])
for (current_keyboard=0;current_keyboard<keyboard_fd_num;current_keyboard++) {
if(ioctl(keyboard_fds[current_keyboard], EVIOCGRAB, 2) < 0) {
close(keyboard_fds[current_keyboard]);
- fprintf(stderr, "Failed to grab exclusive input device lock");
+ fprintf(stderr, "[tsak] Failed to grab exclusive input device lock");
if (established) {
sleep(1);
}
@@ -571,22 +571,22 @@ int main (int argc, char *argv[])
else {
ioctl(keyboard_fds[current_keyboard], EVIOCGNAME(UINPUT_MAX_NAME_SIZE), devinfo.name);
strncat(devinfo.name, "+tsak", UINPUT_MAX_NAME_SIZE-1);
- fprintf(stderr, "%s\n", devinfo.name);
+ fprintf(stderr, "[tsak] %s\n", devinfo.name);
ioctl(keyboard_fds[current_keyboard], EVIOCGID, &devinfo.id);
copy_features(keyboard_fds[current_keyboard], devout[current_keyboard]);
if (write(devout[current_keyboard],&devinfo,sizeof(devinfo)) < 0) {
- fprintf(stderr, "Unable to write to output device\n");
+ fprintf(stderr, "[tsak] Unable to write to output device\n");
}
if (ioctl(devout[current_keyboard],UI_DEV_CREATE)<0) {
- fprintf(stderr, "Unable to create input device with UI_DEV_CREATE\n");
+ fprintf(stderr, "[tsak] Unable to create input device with UI_DEV_CREATE\n");
if (established)
sleep(1);
else
return 2;
}
else {
- fprintf(stderr, "Device created.\n");
+ fprintf(stderr, "[tsak] Device created.\n");
if (established == false) {
int i=fork();
@@ -614,7 +614,7 @@ int main (int argc, char *argv[])
if (rrd >= size) {
if (revev.type == EV_LED) {
if (write(keyboard_fds[current_keyboard], &revev, sizeof(revev)) < 0) {
- fprintf(stderr, "Unable to replicate LED event\n");
+ fprintf(stderr, "[tsak] Unable to replicate LED event\n");
}
}
}
@@ -624,7 +624,7 @@ int main (int argc, char *argv[])
while (1) {
if ((rd = read(keyboard_fds[current_keyboard], ev, size)) < size) {
- fprintf(stderr, "Read failed.\n");
+ fprintf(stderr, "[tsak] Read failed.\n");
break;
}
@@ -654,7 +654,7 @@ int main (int argc, char *argv[])
// Pass the event on...
event = ev[0];
if (write(devout[current_keyboard], &event, sizeof event) < 0) {
- fprintf(stderr, "Unable to replicate keyboard event!\n");
+ fprintf(stderr, "[tsak] Unable to replicate keyboard event!\n");
}
}
if (hide_event == true) {
@@ -683,7 +683,7 @@ int main (int argc, char *argv[])
// Wait a little bit so that udev hotplug can stabilize before we start monitoring
sleep(1);
- fprintf(stderr, "Hotplug monitoring process started\n");
+ fprintf(stderr, "[tsak] Hotplug monitoring process started\n");
// Monitor for hotplugged keyboards
int j;
@@ -696,7 +696,7 @@ int main (int argc, char *argv[])
// Create the udev object
udev = udev_new();
if (!udev) {
- fprintf(stderr, "Cannot connect to udev interface\n");
+ fprintf(stderr, "[tsak] Cannot connect to udev interface\n");
return 11;
}
@@ -707,6 +707,21 @@ int main (int argc, char *argv[])
while (1) {
// Watch for input from the monitoring process
+ fd_set readfds;
+ FD_ZERO(&readfds);
+ FD_SET(udev_monitor_get_fd(mon), &readfds);
+ int fdcount = select(udev_monitor_get_fd(mon)+1, &readfds, NULL, NULL, NULL);
+ if (fdcount < 0) {
+ if (errno == EINTR) {
+ fprintf(stderr, "[tsak] Signal caught in hotplug monitoring process; ignoring\n");
+ }
+ else {
+ fprintf(stderr, "[tsak] Select failed on udev file descriptor in hotplug monitoring process\n");
+ }
+ usleep(1000);
+ continue;
+ }
+
dev = udev_monitor_receive_device(mon);
if (dev) {
// If a keyboard was removed we need to restart...
@@ -741,20 +756,20 @@ int main (int argc, char *argv[])
// If a keyboard was added we need to restart...
if (is_new_keyboard == true) {
- fprintf(stderr, "Hotplugged new keyboard: (%s)\n", name);
+ fprintf(stderr, "[tsak] Hotplugged new keyboard: (%s)\n", name);
udev_unref(udev);
restart_tsak();
}
}
else {
- fprintf(stderr, "No Device from receive_device(). A udev error has occurred; terminating hotplug monitoring process.\n");
- return 11;
+ fprintf(stderr, "[tsak] No device from receive_device(). A udev error has occurred; terminating hotplug monitoring process.\n");
+ return 12;
}
}
udev_unref(udev);
- fprintf(stderr, "Hotplug monitoring process terminated\n");
+ fprintf(stderr, "[tsak] Hotplug monitoring process terminated\n");
}
}
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-22 20:04:33 +0000