Subject: [PATCH v2 4/4] archive: allow archive over HTTP(S) with proto v2

From: Josh Steadmon <[email-masked]>
Date: Wed, 26 Sep 2018 18:24:55 -0700

Signed-off-by: Josh Steadmon <[email-masked]>
---
 builtin/archive.c  | 12 +++++++++++-
 http-backend.c     | 13 ++++++++++++-
 transport-helper.c |  7 ++++---
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/builtin/archive.c b/builtin/archive.c
index f91d222677..78a259518d 100644
--- a/builtin/archive.c
+++ b/builtin/archive.c
@@ -87,7 +87,17 @@ static int run_remote_archiver(int argc, const char **argv,
 		status = packet_reader_read(&reader);
 		if (status == PACKET_READ_NORMAL && reader.pktlen > 0)
 			die(_("git archive: expected a flush"));
-	}
+	} else if (version == protocol_v2 &&
+		   (starts_with(transport->url, "http://") ||
+		    starts_with(transport->url, "https://")))
+		/*
+		 * Commands over HTTP require two requests, so there's an
+		 * additional server response to parse. We do only basic sanity
+		 * checking here that the versions presented match across
+		 * requests.
+		 */
+		if (version != discover_version(&reader))
+			die(_("git archive: received different protocol versions in subsequent requests"));
 
 	/* Now, start reading from fd[0] and spit it out to stdout */
 	rv = recv_sideband("archive", fd[0], 1);
diff --git a/http-backend.c b/http-backend.c
index 9e894f197f..8e262d50e0 100644
--- a/http-backend.c
+++ b/http-backend.c
@@ -32,6 +32,7 @@ struct rpc_service {
 static struct rpc_service rpc_service[] = {
 	{ "upload-pack", "uploadpack", 1, 1 },
 	{ "receive-pack", "receivepack", 0, -1 },
+	{ "upload-archive", "uploadarchive", 1, 1 },
 };
 
 static struct string_list *get_parameters(void)
@@ -637,6 +638,15 @@ static void service_rpc(struct strbuf *hdr, char *service_name)
 	struct rpc_service *svc = select_service(hdr, service_name);
 	struct strbuf buf = STRBUF_INIT;
 
+	if (!strcmp(service_name, "git-upload-archive")) {
+		/*
+		 * git-upload-archive doesn't need --stateless-rpc, because it
+		 * always handles only a single request.
+		 */
+		argv[1] = ".";
+		argv[2] = NULL;
+	}
+
 	strbuf_reset(&buf);
 	strbuf_addf(&buf, "application/x-git-%s-request", svc->name);
 	check_content_type(hdr, buf.buf);
@@ -713,7 +723,8 @@ static struct service_cmd {
 	{"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file},
 
 	{"POST", "/git-upload-pack$", service_rpc},
-	{"POST", "/git-receive-pack$", service_rpc}
+	{"POST", "/git-receive-pack$", service_rpc},
+	{"POST", "/git-upload-archive$", service_rpc},
 };
 
 static int bad_request(struct strbuf *hdr, const struct service_cmd *c)
diff --git a/transport-helper.c b/transport-helper.c
index 143ca008c8..c41c3dfcff 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -604,8 +604,9 @@ static int process_connect_service(struct transport *transport,
 		strbuf_addf(&cmdbuf, "connect %s\n", name);
 		ret = run_connect(transport, &cmdbuf);
 	} else if (data->stateless_connect &&
-		   (get_protocol_version_config() == protocol_v2) &&
-		   !strcmp("git-upload-pack", name)) {
+		   get_protocol_version_config() == protocol_v2 &&
+		   (!strcmp("git-upload-pack", name) ||
+		    !strcmp("git-upload-archive", name))) {
 		strbuf_addf(&cmdbuf, "stateless-connect %s\n", name);
 		ret = run_connect(transport, &cmdbuf);
 		if (ret)
@@ -639,7 +640,7 @@ static int connect_helper(struct transport *transport, const char *name,
 
 	/* Get_helper so connect is inited. */
 	get_helper(transport);
-	if (!data->connect)
+	if (!data->connect && !data->stateless_connect)
 		die(_("operation not supported by protocol"));
 
 	if (!process_connect_service(transport, name, exec))
-- 
2.19.0.605.g01d371f741-goog