display_extension_block is supposed to return the current offset,
not the number of bytes remaining. The number of bytes remaining
can be less than the current offset and cause an infinite loop.
In the case of an error, set lastheader and return the current
offset in order to break out of the main processing loop.
Fix#18711.
display_extension_block is supposed to return the current offset,
not the number of bytes remaining, which can be less than the current
offset and cause an infinite loop. In the case of errors, set
lastheader and return the current offset to break out of loops.
This avoids having general-purpose decoding happening in
non-DLL-exported functions defined in a dissector for #18478,
and removes unused functions and avoids duplicate decoding.
This also removes unnecessary early exit conditions for #18145.
Unit test cases for varint decoding are added to verify this.
ftype-double.c:89:1: warning: no previous prototype for function 'val_unary_minus'
ftype-double.c:96:1: warning: no previous prototype for function 'val_add'
ftype-double.c:103:1: warning: no previous prototype for function 'val_subtract'
ftype-double.c:110:1: warning: no previous prototype for function 'val_multiply'
ftype-double.c:117:1: warning: no previous prototype for function 'val_divide'
ftype-integer.c:670:1: warning: no previous prototype for function 'uint_bitwise_and'
ftype-integer.c:677:1: warning: no previous prototype for function 'uint_is_zero'
ftype-integer.c:683:1: warning: no previous prototype for function 'uint_is_negative'
ftype-integer.c:689:1: warning: no previous prototype for function 'uint_unary_minus'
ftype-integer.c:704:1: warning: no previous prototype for function 'uint64_bitwise_and'
ftype-integer.c:711:1: warning: no previous prototype for function 'uint64_is_zero'
ftype-integer.c:717:1: warning: no previous prototype for function 'uint64_is_negative'
ftype-integer.c:723:1: warning: no previous prototype for function 'uint64_unary_minus'
ftype-integer.c:738:1: warning: no previous prototype for function 'sint_bitwise_and'
ftype-integer.c:745:1: warning: no previous prototype for function 'sint_is_zero'
ftype-integer.c:751:1: warning: no previous prototype for function 'sint_is_negative'
ftype-integer.c:757:1: warning: no previous prototype for function 'sint_unary_minus
ftype-integer.c:764:1: warning: no previous prototype for function 'sint64_bitwise_and'
ftype-integer.c:771:1: warning: no previous prototype for function 'sint64_is_zero'
ftype-integer.c:777:1: warning: no previous prototype for function 'sint64_is_negative'
ftype-integer.c:783:1: warning: no previous prototype for function 'sint64_unary_minus'
packet-bpv6.c:2182:1: warning: no previous prototype for function 'proto_register_bpv6'
packet-bpv6.c:2766:1: warning: no previous prototype for function 'proto_reg_handoff_bpv6'
packet-bpv7.c:1978:6: warning: no previous prototype for function 'proto_register_bpv7'
packet-bpv7.c:2037:6: warning: no previous prototype for function 'proto_reg_handoff_bpv7'
packet-realtek.c:349:1: warning: no previous prototype for function 'proto_register_realtek'
packet-realtek.c:436:1: warning: no previous prototype for function 'proto_reg_handoff_realtek'
packet-tcpcl.c:2147:1: warning: no previous prototype for function 'proto_register_tcpclv3'
packet-tcpcl.c:2211:1: warning: no previous prototype for function 'proto_reg_handoff_tcpclv3'
John Thacker