#!/bin/sh
set -e

TESTDIR="$(readlink -f "$(dirname "$0")")"
. "$TESTDIR/framework"
setupenvironment
configarchitecture "amd64"
setupaptarchive

# this used to crash, but it should treat it as an invalid member header
touch ' '
ar -q test.deb ' '
testsuccessequal "E: Invalid archive member header" ${APTTESTHELPERSBINDIR}/testdeb test.deb


rm test.deb
touch 'x'
ar -q test.deb 'x'
testsuccessequal "E: This is not a valid DEB archive, missing 'debian-binary' member" ${APTTESTHELPERSBINDIR}/testdeb test.deb


# <name><size> [ other fields] - name is not nul terminated here, it ends in .
msgmsg "Unterminated ar member name"
printf '!<arch>\0120123456789ABCDE.A123456789A.01234.01234.0123456.012345678.0.' > test.deb
testsuccessequal "E: Invalid archive member header" ${APTTESTHELPERSBINDIR}/testdeb test.deb


# unused source code for generating $tar below
maketar() {
	cat > maketar.c << EOF
	#include <stdio.h>
	#include <string.h>
	struct tar {
	   char Name[100];
	   char Mode[8];
	   char UserID[8];
	   char GroupID[8];
	   char Size[12];
	   char MTime[12];
	   char Checksum[8];
	   char LinkFlag;
	   char LinkName[100];
	   char MagicNumber[8];
	   char UserName[32];
	   char GroupName[32];
	   char Major[8];
	   char Minor[8];
	};

	int main(void)
	{
		union {
			struct tar t;
			char buf[512];
		} t;
		for (int i = 0; i < sizeof(t.buf); i++)
			t.buf[i] = '7';
		memcpy(t.t.Name, "unterminatedName", 16);
		memcpy(t.t.UserName, "userName", 8);
		memcpy(t.t.GroupName, "thisIsAGroupNamethisIsAGroupName", 32);
		t.t.LinkFlag = 'X'; // I AM BROKEN
		memcpy(t.t.Size, "000000000000", sizeof(t.t.Size));
		memset(t.t.Checksum,' ',sizeof(t.t.Checksum));

		unsigned long sum = 0;
		for (int i = 0; i < sizeof(t.buf); i++)
			sum += t.buf[i];

		int written = sprintf(t.t.Checksum, "%lo", sum);
		for (int i = written; i < sizeof(t.t.Checksum); i++)
			t.t.Checksum[i] = ' ';
		fwrite(t.buf, sizeof(t.buf), 1, stdout);
	}
EOF

	gcc maketar.c -o maketar -Wall
	./maketar
}


#
tar="unterminatedName77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777700000000000077777777777773544   X777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777userName777777777777777777777777thisIsAGroupNamethisIsAGroupName777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
printf '%s' "$tar" | gzip > control.tar.gz
cp control.tar.gz data.tar.gz
touch debian-binary
rm test.deb
ar -q test.deb debian-binary control.tar.gz data.tar.gz
testsuccessequal "W: Unknown TAR header type 88" ${APTTESTHELPERSBINDIR}/testdeb test.deb