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Fixed handling multi byte key sequences in cKbdRemote

This commit is contained in:
Klaus Schmidinger 2006-01-01 14:28:47 +01:00
parent 06b2245bcd
commit 26cb900ddf
4 changed files with 73 additions and 36 deletions
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4
CONTRIBUTORS
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@ -1582,3 +1582,7 @@ Bob Withers <bwit@pobox.com>
Javier Fernández-Sanguino Peña <jfs@computer.org>
for reporting a security hole in the way the SVDRP command GRAB writes the
image file
Jürgen Schneider <ivory7@gmx.de>
for a patch that was used as a base to fix handling multi byte key sequences
in cKbdRemote

2
HISTORY
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@ -4053,3 +4053,5 @@ Video Disk Recorder Revision History
(suggested by Andreas Brugger).
- The DVB devices now retune (and, if applicable, resend the DiSEqC data) if
the lock is lost (based on a patch from Reinhard Nissl).
- Fixed handling multi byte key sequences in cKbdRemote (based on a patch from
Jürgen Schneider).

99
remote.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: remote.c 1.45 2005/09/03 12:29:48 kls Exp $
* $Id: remote.c 1.46 2006/01/01 14:21:07 kls Exp $
*/
#include "remote.h"
@ -262,43 +262,72 @@ int cKbdRemote::MapCodeToFunc(uint64 Code)
return (Code <= 0xFF) ? Code : kfNone;
}
void cKbdRemote::Action(void)
int cKbdRemote::ReadKey(void)
{
cPoller Poller(STDIN_FILENO);
if (Poller.Poll(50)) {
uchar ch = 0;
int r = safe_read(STDIN_FILENO, &ch, 1);
if (r == 1)
return ch;
if (r < 0)
LOG_ERROR_STR("cKbdRemote");
}
return -1;
}
uint64 cKbdRemote::ReadKeySequence(void)
{
uint64 k = 0;
int key1;
if ((key1 = ReadKey()) >= 0) {
k = key1;
if (key1 == 0x1B) {
// Start of escape sequence
if ((key1 = ReadKey()) >= 0) {
k <<= 8;
k |= key1 & 0xFF;
switch (key1) {
case 0x4F: // 3-byte sequence
if ((key1 = ReadKey()) >= 0) {
k <<= 8;
k |= key1 & 0xFF;
}
break;
case 0x5B: // 3- or more-byte sequence
if ((key1 = ReadKey()) >= 0) {
k <<= 8;
k |= key1 & 0xFF;
switch (key1) {
case 0x31 ... 0x3F: // more-byte sequence
while (key1 != 0x7E) {
k <<= 8;
k |= key1 & 0xFF;
if ((key1 = ReadKey()) < 0)
break; // Sequence ends here
}
break;
}
}
break;
}
}
}
}
return k;
}
void cKbdRemote::Action(void)
{
while (Running()) {
if (Poller.Poll(100)) {
uint64 Command = 0;
uint i = 0;
while (Running() && i < sizeof(Command)) {
uchar ch;
int r = read(STDIN_FILENO, &ch, 1);
if (r == 1) {
Command <<= 8;
Command |= ch;
i++;
}
else if (r == 0) {
// don't know why, but sometimes special keys that start with
// 0x1B ('ESC') cause a short gap between the 0x1B and the rest
// of their codes, so we'll need to wait some 100ms to see if
// there is more coming up - or whether this really is the 'ESC'
// key (if somebody knows how to clean this up, please let me know):
if (Command == 0x1B && Poller.Poll(100))
continue;
if (Command) {
if (rawMode || !Put(Command)) {
int func = MapCodeToFunc(Command);
if (func)
Put(KBDKEY(func));
}
}
break;
}
else {
LOG_ERROR;
break;
}
}
uint64 Command = ReadKeySequence();
if (Command) {
if (rawMode || !Put(Command)) {
int func = MapCodeToFunc(Command);
if (func)
Put(KBDKEY(func));
}
}
}
}

4
remote.h
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: remote.h 1.31 2005/09/03 12:28:42 kls Exp $
* $Id: remote.h 1.32 2006/01/01 14:00:50 kls Exp $
*/
#ifndef __REMOTE_H
@ -89,6 +89,8 @@ private:
static bool rawMode;
struct termios savedTm;
virtual void Action(void);
int ReadKey(void);
uint64 ReadKeySequence(void);
int MapCodeToFunc(uint64 Code);
public:
cKbdRemote(void);