Currently, SetSurface is called regardless of return value from
offscreen_cache_get. It may happen that bitmap is not found in a
cache from some reason, which may lead to segfaults. Let's check
the returned value before use.
https://github.com/FreeRDP/FreeRDP/issues/4117
- fixed invalid, missing or additional arguments
- removed all type casts from arguments
- added missing (void*) typecasts for %p arguments
- use inttypes defines where appropriate
This patch contains:
* checks for malloc return value + treat callers;
* modified malloc() + ZeroMemory() to calloc();
* misc fixes of micro errors seen during the code audit:
** some invalid checks in gcc.c, also there were some possible
integer overflow. This is interesting because at the end the data are parsed
and freed directly, so it's a vulnerability in some kind of dead code (at least
useless);
** fixed usage of GetComputerNameExA with just one call, when 2 were used
in misc places. According to MSDN GetComputerNameA() is supposed to return
an error when called with NULL;
** there were a bug in the command line parsing of shadow;
** in freerdp_dynamic_channel_collection_add() the size of array was multiplied
by 4 instead of 2 on resize
* top level GDI functions return 0 on error and != 0 otherwise but the
low level functions (16bpp.c, 8bpp.c 32bpp.c) which are called did it
exactly the other way around. Those were adapted.
* change gdi_InvalidateRegion to BOOL and check calls where appropriate
* integrate comments from pull request
Extend rdp_pointer with function SetPosition. Can then be used by
clients support setting pointer by server which might be used in
shadowing scenarios.
* update_process_glyph_fragments() ignored the text background rectangle
* moved the OpRight value fix-up to update_process_glyph_fragments() since
it is required for all glyph primary drawing orders
