Module firstheader 

NSIS FirstHeader structure.

The FirstHeader is a 28-byte structure found in the PE overlay at a 512-byte aligned offset. It contains the NSIS signature, flags, and size information needed to locate and decompress the header block.

Source: fileform.h from the NSIS source code.

Structs

FirstHeader

View type for the NSIS FirstHeader (28 bytes).

Constants

FH_FLAGS_FORCE_CRC

Flag: force CRC even if /NCRC was passed.

FH_FLAGS_MASK

Mask for valid FirstHeader flags.

FH_FLAGS_NO_CRC

Flag: CRC checking is disabled.

FH_FLAGS_SILENT

Flag: silent mode.

FH_FLAGS_UNINSTALL

Flag: this is an uninstaller.

FH_INT1

"Null" as a little-endian u32.

FH_INT2

"soft" as a little-endian u32.

FH_INT3

"Inst" as a little-endian u32.

FH_INT1_LEGACY

"nsis" as a little-endian u32 (NSIS 1.x legacy).

FH_INT2_LEGACY

"inst" as a little-endian u32 (NSIS 1.x legacy).

FH_INT3_LEGACY

"all\0" as a little-endian u32 (NSIS 1.x legacy).

FH_SIG

NSIS standard signature: 0xDEADBEEF.

FH_SIG_ALT

Alternate signature found in some NSIS variants: 0xDEADBEED.