remote-curl: ensure that URLs have a trailing slash

Previously, we blindly assumed that URLs passed to the remote-curl
helper did not end with a trailing slash.

Use the convenience function end_url_with_slash() from http.[ch] to
ensure that URLs have a trailing slash on invocation of the remote-curl
helper, and use the URL as one with a trailing slash throughout.

It is possible for users to pass a URL with a trailing slash to
remote-curl, by, say, setting it in remote.<name>.url in their git
config. The resulting requests have an empty path component (//) and may
break implementations of the http git protocol.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/remote-curl.c b/remote-curl.c
index a904164e425097380781c1ecd9bb13f4feec0de6..1fe59d6db0e85ab938959f08d3bca4a83f748ab5 100644 (file)
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -9,7 +9,7 @@
 #include "sideband.h"
 
 static struct remote *remote;
-static const char *url;
+static const char *url; /* always ends with a trailing slash */
 static struct walker *walker;
 
 struct options {
@@ -108,7 +108,7 @@ static struct discovery* discover_refs(const char *service)
                return last;
        free_discovery(last);
 
-       strbuf_addf(&buffer, "%s/info/refs", url);
+       strbuf_addf(&buffer, "%sinfo/refs", url);
        if (!prefixcmp(url, "http://") || !prefixcmp(url, "https://")) {
                is_http = 1;
                if (!strchr(url, '?'))
@@ -128,7 +128,7 @@ static struct discovery* discover_refs(const char *service)
                strbuf_reset(&buffer);
 
                proto_git_candidate = 0;
-               strbuf_addf(&buffer, "%s/info/refs", url);
+               strbuf_addf(&buffer, "%sinfo/refs", url);
                refs_url = strbuf_detach(&buffer, NULL);
 
                http_ret = http_get_strbuf(refs_url, &buffer, HTTP_NO_CACHE);
@@ -518,7 +518,7 @@ static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
        rpc->out = client.out;
        strbuf_init(&rpc->result, 0);
 
-       strbuf_addf(&buf, "%s/%s", url, svc);
+       strbuf_addf(&buf, "%s%s", url, svc);
        rpc->service_url = strbuf_detach(&buf, NULL);
 
        strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
@@ -805,11 +805,13 @@ int main(int argc, const char **argv)
        remote = remote_get(argv[1]);
 
        if (argc > 2) {
-               url = argv[2];
+               end_url_with_slash(&buf, argv[2]);
        } else {
-               url = remote->url[0];
+               end_url_with_slash(&buf, remote->url[0]);
        }
 
+       url = strbuf_detach(&buf, NULL);
+
        do {
                if (strbuf_getline(&buf, stdin, '\n') == EOF)
                        break;

diff --git a/t/t5541-http-push.sh b/t/t5541-http-push.sh
index 7873d9429ab86292c03f7704b5b0d919e1a7f029..f0c50d3d774dcbd2449988c65e0813cf25366b89 100755 (executable)
--- a/t/t5541-http-push.sh
+++ b/t/t5541-http-push.sh
@@ -38,7 +38,7 @@ cat >exp <<EOF
 GET  /smart/test_repo.git/info/refs?service=git-upload-pack HTTP/1.1 200
 POST /smart/test_repo.git/git-upload-pack HTTP/1.1 200
 EOF
-test_expect_failure 'no empty path components' '
+test_expect_success 'no empty path components' '
        # In the URL, add a trailing slash, and see if git appends yet another
        # slash.
        cd "$ROOT_PATH" &&