git/t/t9850-shell.sh
Patrick Steinhardt c75841687b shell: fix leaking strings
There are two memory leaks in "shell.c". The first one in `run_shell()`
is trivial and fixed without further explanation. The second one in
`cmd_main()` happens because we overwrite the `prog` variable, which
contains an allocated string. In fact though, the memory pointed to by
that variable is still in use because we use `split_cmdline()`, which
may create pointers into the middle of that string. But as we do not
have a direct pointer to the head of the allocated string anymore, we
get a complaint by the leak checker.

Address this by not overwriting the `prog` pointer.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-09-30 11:23:03 -07:00

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#!/bin/sh
test_description='git shell tests'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'shell allows upload-pack' '
printf 0000 >input &&
git upload-pack . <input >expect &&
git shell -c "git-upload-pack $SQ.$SQ" <input >actual &&
test_cmp expect actual
'
test_expect_success 'shell forbids other commands' '
test_must_fail git shell -c "git config foo.bar baz"
'
test_expect_success 'shell forbids interactive use by default' '
test_must_fail git shell
'
test_expect_success 'shell allows interactive command' '
mkdir git-shell-commands &&
write_script git-shell-commands/ping <<-\EOF &&
echo pong
EOF
echo pong >expect &&
echo ping | git shell >actual &&
test_cmp expect actual
'
test_expect_success 'shell complains of overlong commands' '
perl -e "print \"a\" x 2**12 for (0..2**19)" |
test_must_fail git shell 2>err &&
grep "too long" err
'
test_done