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Merge branch 'jk/daemon-fixes' into maint

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Assorted fixes to "git daemon".

* jk/daemon-fixes:
  daemon: fix length computation in newline stripping
  t/lib-git-daemon: add network-protocol helpers
  daemon: handle NULs in extended attribute string
  daemon: fix off-by-one in logging extended attributes
  t/lib-git-daemon: record daemon log
  t5570: use ls-remote instead of clone for interp tests
This commit is contained in:
Junio C Hamano 2018-03-22 14:24:10 -07:00
commit f936c9b393
4 changed files with 107 additions and 20 deletions
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15
daemon.c
View File

@ -597,6 +597,7 @@ static char *parse_host_arg(struct hostinfo *hi, char *extra_args, int buflen)
if (strncasecmp("host=", extra_args, 5) == 0) {
val = extra_args + 5;
vallen = strlen(val) + 1;
loginfo("Extended attribute \"host\": %s", val);
if (*val) {
/* Split <host>:<port> at colon. */
char *host;
@ -647,9 +648,11 @@ static void parse_extra_args(struct hostinfo *hi, struct argv_array *env,
}
}
if (git_protocol.len > 0)
if (git_protocol.len > 0) {
loginfo("Extended attribute \"protocol\": %s", git_protocol.buf);
argv_array_pushf(env, GIT_PROTOCOL_ENVIRONMENT "=%s",
git_protocol.buf);
}
strbuf_release(&git_protocol);
}
@ -757,14 +760,8 @@ static int execute(void)
alarm(0);
len = strlen(line);
if (pktlen != len)
loginfo("Extended attributes (%d bytes) exist <%.*s>",
(int) pktlen - len,
(int) pktlen - len, line + len + 1);
if (len && line[len-1] == '\n') {
line[--len] = 0;
pktlen--;
}
if (len && line[len-1] == '\n')
line[len-1] = 0;
/* parse additional args hidden behind a NUL byte */
if (len != pktlen)

41
t/lib-git-daemon.sh
View File

@ -32,7 +32,8 @@ LIB_GIT_DAEMON_PORT=${LIB_GIT_DAEMON_PORT-${this_test#t}}
GIT_DAEMON_PID=
GIT_DAEMON_DOCUMENT_ROOT_PATH="$PWD"/repo
GIT_DAEMON_URL=git://127.0.0.1:$LIB_GIT_DAEMON_PORT
GIT_DAEMON_HOST_PORT=127.0.0.1:$LIB_GIT_DAEMON_PORT
GIT_DAEMON_URL=git://$GIT_DAEMON_HOST_PORT
start_git_daemon() {
if test -n "$GIT_DAEMON_PID"
@ -53,11 +54,19 @@ start_git_daemon() {
"$@" "$GIT_DAEMON_DOCUMENT_ROOT_PATH" \
>&3 2>git_daemon_output &
GIT_DAEMON_PID=$!
>daemon.log
{
read line <&7
echo >&4 "$line"
cat <&7 >&4 &
} 7<git_daemon_output &&
read -r line <&7
printf "%s\n" "$line"
printf >&4 "%s\n" "$line"
(
while read -r line <&7
do
printf "%s\n" "$line"
printf >&4 "%s\n" "$line"
done
) &
} 7<git_daemon_output >>"$TRASH_DIRECTORY/daemon.log" &&
# Check expected output
if test x"$(expr "$line" : "\[[0-9]*\] \(.*\)")" != x"Ready to rumble"
@ -90,3 +99,25 @@ stop_git_daemon() {
GIT_DAEMON_PID=
rm -f git_daemon_output
}
# A stripped-down version of a netcat client, that connects to a "host:port"
# given in $1, sends its stdin followed by EOF, then dumps the response (until
# EOF) to stdout.
fake_nc() {
if ! test_declared_prereq FAKENC
then
echo >&4 "fake_nc: need to declare FAKENC prerequisite"
return 127
fi
perl -Mstrict -MIO::Socket::INET -e '
my $s = IO::Socket::INET->new(shift)
or die "unable to open socket: $!";
print $s <STDIN>;
$s->shutdown(1);
print <$s>;
' "$@"
}
test_lazy_prereq FAKENC '
perl -MIO::Socket::INET -e "exit 0"
'

37
t/t5570-git-daemon.sh
View File

@ -167,23 +167,48 @@ test_expect_success 'access repo via interpolated hostname' '
git init --bare "$repo" &&
git push "$repo" HEAD &&
>"$repo"/git-daemon-export-ok &&
rm -rf tmp.git &&
GIT_OVERRIDE_VIRTUAL_HOST=localhost \
git clone --bare "$GIT_DAEMON_URL/interp.git" tmp.git &&
rm -rf tmp.git &&
git ls-remote "$GIT_DAEMON_URL/interp.git" &&
GIT_OVERRIDE_VIRTUAL_HOST=LOCALHOST \
git clone --bare "$GIT_DAEMON_URL/interp.git" tmp.git
git ls-remote "$GIT_DAEMON_URL/interp.git"
'
test_expect_success 'hostname cannot break out of directory' '
rm -rf tmp.git &&
repo="$GIT_DAEMON_DOCUMENT_ROOT_PATH/../escape.git" &&
git init --bare "$repo" &&
git push "$repo" HEAD &&
>"$repo"/git-daemon-export-ok &&
test_must_fail \
env GIT_OVERRIDE_VIRTUAL_HOST=.. \
git clone --bare "$GIT_DAEMON_URL/escape.git" tmp.git
git ls-remote "$GIT_DAEMON_URL/escape.git"
'
test_expect_success 'daemon log records all attributes' '
cat >expect <<-\EOF &&
Extended attribute "host": localhost
Extended attribute "protocol": version=1
EOF
>daemon.log &&
GIT_OVERRIDE_VIRTUAL_HOST=localhost \
git -c protocol.version=1 \
ls-remote "$GIT_DAEMON_URL/interp.git" &&
grep -i extended.attribute daemon.log | cut -d" " -f2- >actual &&
test_cmp expect actual
'
test_expect_success FAKENC 'hostname interpolation works after LF-stripping' '
{
printf "git-upload-pack /interp.git\n\0host=localhost" | packetize
printf "0000"
} >input &&
fake_nc "$GIT_DAEMON_HOST_PORT" <input >output &&
depacketize <output >output.raw &&
# just pick out the value of master, which avoids any protocol
# particulars
perl -lne "print \$1 if m{^(\\S+) refs/heads/master}" <output.raw >actual &&
git -C "$repo" rev-parse master >expect &&
test_cmp expect actual
'
stop_git_daemon

34
t/test-lib-functions.sh
View File

@ -1020,3 +1020,37 @@ nongit () {
"$@"
)
}
# convert stdin to pktline representation; note that empty input becomes an
# empty packet, not a flush packet (for that you can just print 0000 yourself).
packetize() {
cat >packetize.tmp &&
len=$(wc -c <packetize.tmp) &&
printf '%04x%s' "$(($len + 4))" &&
cat packetize.tmp &&
rm -f packetize.tmp
}
# Parse the input as a series of pktlines, writing the result to stdout.
# Sideband markers are removed automatically, and the output is routed to
# stderr if appropriate.
#
# NUL bytes are converted to "\\0" for ease of parsing with text tools.
depacketize () {
perl -e '
while (read(STDIN, $len, 4) == 4) {
if ($len eq "0000") {
print "FLUSH\n";
} else {
read(STDIN, $buf, hex($len) - 4);
$buf =~ s/\0/\\0/g;
if ($buf =~ s/^[\x2\x3]//) {
print STDERR $buf;
} else {
$buf =~ s/^\x1//;
print $buf;
}
}
}
'
}