Commit 1a899839 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

udeflate: Verify zlib FCHECK

parent cb2f614c

include/lib/udeflate.h

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#define UDEFLATE_ERR_BLOCK (-4)

#define UDEFLATE_ERR_CHECKSUM (-5)

#define UDEFLATE_ERR_OUTPUT_LENGTH (-6)

#define UDEFLATE_ERR_FCHECK (-7)



int8_t udeflate(unsigned char *input_buf, uint16_t input_len,

		unsigned char *output_buf, uint16_t output_len);

src/lib/udeflate.cc

+4 −0
Original line number Diff line number Diff line
@@ -422,6 +422,10 @@ int8_t udeflate_zlib(unsigned char *input_buf, uint16_t input_len, 
		return UDEFLATE_ERR_FDICT;

	}



	if ((((uint16_t)input_buf[0] << 8) | input_buf[1]) % 31) {

		return UDEFLATE_ERR_FCHECK;

	}



	uint8_t ret =

	    udeflate(input_buf + 2, input_len - 2, output_buf, output_len);