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egfx: client: add missing NULL checks

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This commit is contained in:
Kobi Mizrachi 2020-03-01 13:43:09 +02:00 committed by akallabeth
parent 5690780bdd
commit 929457db4c
1 changed files with 8 additions and 3 deletions
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11
channels/rdpgfx/client/rdpgfx_main.c
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@ -112,7 +112,12 @@ static UINT rdpgfx_send_caps_advertise_pdu(RdpgfxClientContext* context,
RDPGFX_CHANNEL_CALLBACK* callback;
wStream* s;
gfx = (RDPGFX_PLUGIN*)context->handle;
if (!gfx || !gfx->listener_callback)
return ERROR_BAD_ARGUMENTS;
callback = gfx->listener_callback->channel_callback;
header.flags = 0;
header.cmdId = RDPGFX_CMDID_CAPSADVERTISE;
header.pduLength = RDPGFX_HEADER_SIZE + 2;
@ -374,7 +379,7 @@ static UINT rdpgfx_send_frame_acknowledge_pdu(RdpgfxClientContext* context,
gfx = (RDPGFX_PLUGIN*)context->handle;
if (!gfx)
if (!gfx || !gfx->listener_callback)
return ERROR_BAD_CONFIGURATION;
callback = gfx->listener_callback->channel_callback;
@ -429,7 +434,7 @@ static UINT rdpgfx_send_qoe_frame_acknowledge_pdu(RdpgfxClientContext* context,
gfx = (RDPGFX_PLUGIN*)context->handle;
if (!gfx)
if (!gfx || !gfx->listener_callback)
return ERROR_BAD_CONFIGURATION;
callback = gfx->listener_callback->channel_callback;
@ -482,7 +487,7 @@ static UINT rdpgfx_send_cache_import_offer_pdu(RdpgfxClientContext* context,
gfx = (RDPGFX_PLUGIN*)context->handle;
if (!gfx)
if (!gfx || !gfx->listener_callback)
return ERROR_BAD_CONFIGURATION;
callback = gfx->listener_callback->channel_callback;