http-backend: allow empty CONTENT_LENGTH
According to RFC3875, empty environment variable is equivalent to unset,
and for CONTENT_LENGTH it should mean zero body to read.
However, unset CONTENT_LENGTH is also used for chunked encoding to indicate
reading until EOF. At least, the test "large fetch-pack requests can be split
across POSTs" from t5551 starts faliing, if unset or empty CONTENT_LENGTH is
treated as zero length body. So keep the existing behavior as much as possible.
Add a test for the case.
Reported-By: Jelmer Vernooij <jelmer@jelmer.uk>
Signed-off-by: Max Kirillov <max@max630.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/http-backend.c b/http-backend.c
index e88d29f..a1230d7 100644
--- a/http-backend.c
+++ b/http-backend.c
@@ -353,7 +353,7 @@
ssize_t val = -1;
const char *str = getenv("CONTENT_LENGTH");
- if (str && !git_parse_ssize_t(str, &val))
+ if (str && *str && !git_parse_ssize_t(str, &val))
die("failed to parse CONTENT_LENGTH: %s", str);
return val;
}
diff --git a/t/t5562-http-backend-content-length.sh b/t/t5562-http-backend-content-length.sh
index 43570ce..f94d01f 100755
--- a/t/t5562-http-backend-content-length.sh
+++ b/t/t5562-http-backend-content-length.sh
@@ -153,4 +153,15 @@
grep "fatal:.*CONTENT_LENGTH" err
'
+test_expect_success 'empty CONTENT_LENGTH' '
+ env \
+ QUERY_STRING=/repo.git/HEAD \
+ PATH_TRANSLATED="$PWD"/.git/HEAD \
+ GIT_HTTP_EXPORT_ALL=TRUE \
+ REQUEST_METHOD=GET \
+ CONTENT_LENGTH="" \
+ git http-backend <empty_body >act.out 2>act.err &&
+ verify_http_result "200 OK"
+'
+
test_done
