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https://github.com/git/git.git
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b485373052
We use the daemon_avoid_alias function to make sure that the pathname the user gives us is sane. However, after applying that check, we might then interpolate the path using a string given by the server admin, but which may contain more untrusted data from the client. We should be sure to sanitize this data, as well. We cannot use daemon_avoid_alias here, as it is more strict than we need in requiring a leading '/'. At the same time, we can be much more strict here. We are interpreting a hostname, which should not contain slashes or excessive runs of dots, as those things are not allowed in DNS names. Note that in addition to cleansing the hostname field, we must check the "canonical hostname" (%CH) as well as the port (%P), which we take as a raw string. For the canonical hostname, this comes from an actual DNS lookup on the accessed IP, which makes it a much less likely vector for problems. But it does not hurt to sanitize it in the same way. Unfortunately we cannot test this case easily, as it would involve a custom hostname lookup. We do not need to check %IP, as it comes straight from inet_ntop, so must have a sane form. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
172 lines
4.9 KiB
Bash
Executable file
172 lines
4.9 KiB
Bash
Executable file
#!/bin/sh
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test_description='test fetching over git protocol'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/lib-git-daemon.sh
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start_git_daemon
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test_expect_success 'setup repository' '
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git config push.default matching &&
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echo content >file &&
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git add file &&
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git commit -m one
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'
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test_expect_success 'create git-accessible bare repository' '
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mkdir "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git" &&
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(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git" &&
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git --bare init &&
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: >git-daemon-export-ok
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) &&
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git remote add public "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git" &&
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git push public master:master
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'
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test_expect_success 'clone git repository' '
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git clone "$GIT_DAEMON_URL/repo.git" clone &&
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test_cmp file clone/file
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'
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test_expect_success 'fetch changes via git protocol' '
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echo content >>file &&
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git commit -a -m two &&
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git push public &&
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(cd clone && git pull) &&
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test_cmp file clone/file
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'
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test_expect_success 'remote detects correct HEAD' '
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git push public master:other &&
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(cd clone &&
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git remote set-head -d origin &&
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git remote set-head -a origin &&
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git symbolic-ref refs/remotes/origin/HEAD > output &&
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echo refs/remotes/origin/master > expect &&
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test_cmp expect output
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)
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'
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test_expect_success 'prepare pack objects' '
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cp -R "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo.git "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git &&
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(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git &&
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git --bare repack -a -d
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)
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'
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test_expect_success 'fetch notices corrupt pack' '
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cp -R "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad1.git &&
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(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad1.git &&
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p=`ls objects/pack/pack-*.pack` &&
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chmod u+w $p &&
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printf %0256d 0 | dd of=$p bs=256 count=1 seek=1 conv=notrunc
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) &&
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mkdir repo_bad1.git &&
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(cd repo_bad1.git &&
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git --bare init &&
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test_must_fail git --bare fetch "$GIT_DAEMON_URL/repo_bad1.git" &&
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test 0 = `ls objects/pack/pack-*.pack | wc -l`
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)
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'
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test_expect_success 'fetch notices corrupt idx' '
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cp -R "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_pack.git "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad2.git &&
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(cd "$GIT_DAEMON_DOCUMENT_ROOT_PATH"/repo_bad2.git &&
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p=`ls objects/pack/pack-*.idx` &&
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chmod u+w $p &&
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printf %0256d 0 | dd of=$p bs=256 count=1 seek=1 conv=notrunc
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) &&
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mkdir repo_bad2.git &&
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(cd repo_bad2.git &&
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git --bare init &&
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test_must_fail git --bare fetch "$GIT_DAEMON_URL/repo_bad2.git" &&
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test 0 = `ls objects/pack | wc -l`
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)
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'
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test_remote_error()
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{
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do_export=YesPlease
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while test $# -gt 0
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do
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case $1 in
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-x)
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shift
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chmod -x "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git"
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;;
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-n)
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shift
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do_export=
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;;
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*)
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break
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esac
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done
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msg=$1
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shift
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cmd=$1
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shift
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repo=$1
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shift || error "invalid number of arguments"
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if test -x "$GIT_DAEMON_DOCUMENT_ROOT_PATH/$repo"
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then
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if test -n "$do_export"
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then
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: >"$GIT_DAEMON_DOCUMENT_ROOT_PATH/$repo/git-daemon-export-ok"
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else
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rm -f "$GIT_DAEMON_DOCUMENT_ROOT_PATH/$repo/git-daemon-export-ok"
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fi
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fi
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test_must_fail git "$cmd" "$GIT_DAEMON_URL/$repo" "$@" 2>output &&
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test_i18ngrep "fatal: remote error: $msg: /$repo" output &&
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ret=$?
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chmod +x "$GIT_DAEMON_DOCUMENT_ROOT_PATH/repo.git"
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(exit $ret)
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}
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msg="access denied or repository not exported"
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test_expect_success 'clone non-existent' "test_remote_error '$msg' clone nowhere.git "
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test_expect_success 'push disabled' "test_remote_error '$msg' push repo.git master"
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test_expect_success 'read access denied' "test_remote_error -x '$msg' fetch repo.git "
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test_expect_success 'not exported' "test_remote_error -n '$msg' fetch repo.git "
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stop_git_daemon
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start_git_daemon --informative-errors
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test_expect_success 'clone non-existent' "test_remote_error 'no such repository' clone nowhere.git "
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test_expect_success 'push disabled' "test_remote_error 'service not enabled' push repo.git master"
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test_expect_success 'read access denied' "test_remote_error -x 'no such repository' fetch repo.git "
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test_expect_success 'not exported' "test_remote_error -n 'repository not exported' fetch repo.git "
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stop_git_daemon
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start_git_daemon --interpolated-path="$GIT_DAEMON_DOCUMENT_ROOT_PATH/%H%D"
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test_expect_success 'access repo via interpolated hostname' '
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repo="$GIT_DAEMON_DOCUMENT_ROOT_PATH/localhost/interp.git" &&
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git init --bare "$repo" &&
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git push "$repo" HEAD &&
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>"$repo"/git-daemon-export-ok &&
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rm -rf tmp.git &&
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GIT_OVERRIDE_VIRTUAL_HOST=localhost \
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git clone --bare "$GIT_DAEMON_URL/interp.git" tmp.git &&
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rm -rf tmp.git &&
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GIT_OVERRIDE_VIRTUAL_HOST=LOCALHOST \
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git clone --bare "$GIT_DAEMON_URL/interp.git" tmp.git
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'
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test_expect_success 'hostname cannot break out of directory' '
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rm -rf tmp.git &&
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repo="$GIT_DAEMON_DOCUMENT_ROOT_PATH/../escape.git" &&
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git init --bare "$repo" &&
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git push "$repo" HEAD &&
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>"$repo"/git-daemon-export-ok &&
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test_must_fail \
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env GIT_OVERRIDE_VIRTUAL_HOST=.. \
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git clone --bare "$GIT_DAEMON_URL/escape.git" tmp.git
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'
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stop_git_daemon
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test_done
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