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Fixed #4412: memory corruption in audin channel.

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This commit is contained in:
Armin Novak 2018-02-09 14:04:10 +01:00
parent c53d72211a
commit 0c49152a3d
2 changed files with 24 additions and 30 deletions
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39
channels/audin/client/audin_main.c
View File

@ -71,7 +71,7 @@ struct _AUDIN_CHANNEL_CALLBACK
* Open PDU and Format Change PDU
*/
audinFormat* formats;
int formats_count;
UINT32 formats_count;
};
typedef struct _AUDIN_PLUGIN AUDIN_PLUGIN;
@ -101,10 +101,11 @@ static BOOL audin_process_addin_args(AUDIN_PLUGIN* audin, ADDIN_ARGV* args);
static UINT audin_write_and_free_stream(AUDIN_CHANNEL_CALLBACK* callback, wStream* s)
{
UINT error = ERROR_INTERNAL_ERROR;
const size_t length = Stream_GetPosition(s);
const BYTE* data = Stream_Buffer(s);
if (callback && callback->channel && callback->channel->Write)
error = callback->channel->Write(callback->channel, (UINT32) Stream_GetPosition(s),
Stream_Buffer(s), NULL);
error = callback->channel->Write(callback->channel, length, data, NULL);
Stream_Free(s, TRUE);
return error;
@ -116,7 +117,6 @@ static UINT audin_write_and_free_stream(AUDIN_CHANNEL_CALLBACK* callback, wStrea
*/
static UINT audin_process_version(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* callback, wStream* s)
{
UINT error;
wStream* out;
UINT32 Version;
Stream_Read_UINT32(s, Version);
@ -131,10 +131,7 @@ static UINT audin_process_version(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* c
Stream_Write_UINT8(out, MSG_SNDIN_VERSION);
Stream_Write_UINT32(out, Version);
error = callback->channel->Write(callback->channel, (UINT32) Stream_GetPosition(out),
Stream_Buffer(out), NULL);
Stream_Free(out, TRUE);
return error;
return audin_write_and_free_stream(callback, out);
}
/**
@ -165,7 +162,7 @@ static UINT audin_process_formats(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* c
wStream* out;
UINT32 NumFormats;
audinFormat format;
UINT32 cbSizeFormatsPacket;
size_t cbSizeFormatsPacket;
if (Stream_GetRemainingLength(s) < 8)
return ERROR_NO_DATA;
@ -257,11 +254,12 @@ static UINT audin_process_formats(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLBACK* c
goto out;
}
cbSizeFormatsPacket = (UINT32) Stream_GetPosition(out);
cbSizeFormatsPacket = Stream_GetPosition(out);
Stream_SetPosition(out, 0);
Stream_Write_UINT8(out, MSG_SNDIN_FORMATS); /* Header (1 byte) */
Stream_Write_UINT32(out, callback->formats_count); /* NumFormats (4 bytes) */
Stream_Write_UINT32(out, cbSizeFormatsPacket); /* cbSizeFormatsPacket (4 bytes) */
Stream_SetPosition(out, cbSizeFormatsPacket);
error = audin_write_and_free_stream(callback, out);
out:
@ -442,7 +440,7 @@ static UINT audin_process_format_change(AUDIN_PLUGIN* audin, AUDIN_CHANNEL_CALLB
Stream_Read_UINT32(s, NewFormat);
DEBUG_DVC("NewFormat=%"PRIu32"", NewFormat);
if (NewFormat >= (UINT32) callback->formats_count)
if (NewFormat >= callback->formats_count)
{
WLog_Print(audin->log, WLOG_ERROR, "invalid format index %"PRIu32" (total %d)",
NewFormat, callback->formats_count);
@ -703,17 +701,12 @@ static UINT audin_register_device_plugin(IWTSPlugin* pPlugin, IAudinDevice* devi
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT audin_load_device_plugin(IWTSPlugin* pPlugin, const char* name, ADDIN_ARGV* args)
static UINT audin_load_device_plugin(AUDIN_PLUGIN* audin, char* name, ADDIN_ARGV* args)
{
PFREERDP_AUDIN_DEVICE_ENTRY entry;
FREERDP_AUDIN_DEVICE_ENTRY_POINTS entryPoints;
AUDIN_PLUGIN* audin = (AUDIN_PLUGIN*)pPlugin;
UINT error;
if (!audin_process_addin_args(audin, args))
return CHANNEL_RC_INITIALIZATION_ERROR;
entry = (PFREERDP_AUDIN_DEVICE_ENTRY) freerdp_load_channel_addin_entry("audin", (LPSTR) name, NULL,
entry = (PFREERDP_AUDIN_DEVICE_ENTRY) freerdp_load_channel_addin_entry("audin", name, NULL,
0);
if (entry == NULL)
@ -724,10 +717,10 @@ static UINT audin_load_device_plugin(IWTSPlugin* pPlugin, const char* name, ADDI
return ERROR_INVALID_FUNCTION;
}
entryPoints.plugin = pPlugin;
entryPoints.plugin = (IWTSPlugin*) audin;
entryPoints.pRegisterAudinDevice = audin_register_device_plugin;
entryPoints.args = args;
entryPoints.rdpcontext = ((AUDIN_PLUGIN*)pPlugin)->rdpcontext;
entryPoints.rdpcontext = audin->rdpcontext;
if ((error = entry(&entryPoints)))
{
@ -744,7 +737,7 @@ static UINT audin_load_device_plugin(IWTSPlugin* pPlugin, const char* name, ADDI
*
* @return 0 on success, otherwise a Win32 error code
*/
static UINT audin_set_subsystem(AUDIN_PLUGIN* audin, char* subsystem)
static UINT audin_set_subsystem(AUDIN_PLUGIN* audin, const char* subsystem)
{
free(audin->subsystem);
audin->subsystem = _strdup(subsystem);
@ -943,7 +936,7 @@ UINT DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints)
if (audin->subsystem)
{
if ((error = audin_load_device_plugin((IWTSPlugin*) audin, audin->subsystem, args)))
if ((error = audin_load_device_plugin(audin, audin->subsystem, args)))
{
WLog_Print(audin->log, WLOG_ERROR, "audin_load_device_plugin %s failed with error %"PRIu32"!",
audin->subsystem, error);
@ -964,7 +957,7 @@ UINT DVCPluginEntry(IDRDYNVC_ENTRY_POINTS* pEntryPoints)
WLog_Print(audin->log, WLOG_ERROR, "audin_set_device_name for %s failed with error %"PRIu32"!",
entry->subsystem, error);
}
else if ((error = audin_load_device_plugin((IWTSPlugin*) audin, audin->subsystem, args)))
else if ((error = audin_load_device_plugin(audin, audin->subsystem, args)))
{
WLog_Print(audin->log, WLOG_ERROR, "audin_load_device_plugin %s failed with error %"PRIu32"!",
entry->subsystem, error);

7
channels/audin/client/pulse/audin_pulse.c
View File

@ -400,14 +400,15 @@ static UINT audin_pulse_close(IAudinDevice* device)
{
AudinPulseDevice* pulse = (AudinPulseDevice*) device;
if (!pulse->context || !pulse->stream)
return ERROR_INVALID_PARAMETER;
if (pulse->stream)
{
pa_threaded_mainloop_lock(pulse->mainloop);
pa_stream_disconnect(pulse->stream);
pa_stream_unref(pulse->stream);
pulse->stream = NULL;
pa_threaded_mainloop_unlock(pulse->mainloop);
}
pulse->receive = NULL;
pulse->user_data = NULL;