Merge branch 'll/curl-accept-language'

Earlier, HTTP transport clients learned to tell the server side
what locale they are in by sending Accept-Language HTTP header, but
this was done only for some requests but not others.

* ll/curl-accept-language:
  remote-curl: send Accept-Language header to server

http.c

@@ -1775,7 +1775,7 @@ static void write_accept_language(struct strbuf *buf)
  *   LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
  *   LANGUAGE= LANG=C -> ""
  */
-static const char *get_accept_language(void)
+const char *http_get_accept_language_header(void)
 {
 	if (!cached_accept_language) {
 		struct strbuf buf = STRBUF_INIT;
@@ -1829,7 +1829,7 @@ static int http_request(const char *url,
 					 fwrite_buffer);
 	}
 
-	accept_language = get_accept_language();
+	accept_language = http_get_accept_language_header();
 
 	if (accept_language)
 		headers = curl_slist_append(headers, accept_language);

http.h

@@ -178,6 +178,9 @@ int http_fetch_ref(const char *base, struct ref *ref);
 int http_get_info_packs(const char *base_url,
 			struct packed_git **packs_head);
 
+/* Helper for getting Accept-Language header */
+const char *http_get_accept_language_header(void);
+
 struct http_pack_request {
 	char *url;
 

remote-curl.c

@@ -580,6 +580,7 @@ struct rpc_state {
 	char *service_url;
 	char *hdr_content_type;
 	char *hdr_accept;
+	char *hdr_accept_language;
 	char *protocol_header;
 	char *buf;
 	size_t alloc;
@@ -607,6 +608,8 @@ struct rpc_state {
 	unsigned flush_read_but_not_sent : 1;
 };
 
+#define RPC_STATE_INIT { 0 }
+
 /*
  * Appends the result of reading from rpc->out to the string represented by
  * rpc->buf and rpc->len if there is enough space. Returns 1 if there was
@@ -932,6 +935,10 @@ static int post_rpc(struct rpc_state *rpc, int stateless_connect, int flush_rece
 	headers = curl_slist_append(headers, needs_100_continue ?
 		"Expect: 100-continue" : "Expect:");
 
+	/* Add Accept-Language header */
+	if (rpc->hdr_accept_language)
+		headers = curl_slist_append(headers, rpc->hdr_accept_language);
+
 	/* Add the extra Git-Protocol header */
 	if (rpc->protocol_header)
 		headers = curl_slist_append(headers, rpc->protocol_header);
@@ -1080,6 +1087,8 @@ static int rpc_service(struct rpc_state *rpc, struct discovery *heads,
 	strbuf_addf(&buf, "%s%s", url.buf, svc);
 	rpc->service_url = strbuf_detach(&buf, NULL);
 
+	rpc->hdr_accept_language = xstrdup_or_null(http_get_accept_language_header());
+
 	strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
 	rpc->hdr_content_type = strbuf_detach(&buf, NULL);
 
@@ -1118,6 +1127,7 @@ static int rpc_service(struct rpc_state *rpc, struct discovery *heads,
 	free(rpc->service_url);
 	free(rpc->hdr_content_type);
 	free(rpc->hdr_accept);
+	free(rpc->hdr_accept_language);
 	free(rpc->protocol_header);
 	free(rpc->buf);
 	strbuf_release(&buf);
@@ -1153,7 +1163,7 @@ static int fetch_dumb(int nr_heads, struct ref **to_fetch)
 static int fetch_git(struct discovery *heads,
 	int nr_heads, struct ref **to_fetch)
 {
-	struct rpc_state rpc;
+	struct rpc_state rpc = RPC_STATE_INIT;
 	struct strbuf preamble = STRBUF_INIT;
 	int i, err;
 	struct strvec args = STRVEC_INIT;
@@ -1299,7 +1309,7 @@ static int push_dav(int nr_spec, const char **specs)
 
 static int push_git(struct discovery *heads, int nr_spec, const char **specs)
 {
-	struct rpc_state rpc;
+	struct rpc_state rpc = RPC_STATE_INIT;
 	int i, err;
 	struct strvec args;
 	struct string_list_item *cas_option;
@@ -1398,8 +1408,9 @@ free_specs:
 static int stateless_connect(const char *service_name)
 {
 	struct discovery *discover;
-	struct rpc_state rpc;
+	struct rpc_state rpc = RPC_STATE_INIT;
 	struct strbuf buf = STRBUF_INIT;
+	const char *accept_language;
 
 	/*
 	 * Run the info/refs request and see if the server supports protocol
@@ -1418,6 +1429,9 @@ static int stateless_connect(const char *service_name)
 		printf("\n");
 		fflush(stdout);
 	}
+	accept_language = http_get_accept_language_header();
+	if (accept_language)
+		rpc.hdr_accept_language = xstrfmt("%s", accept_language);
 
 	rpc.service_name = service_name;
 	rpc.service_url = xstrfmt("%s%s", url.buf, rpc.service_name);
@@ -1467,6 +1481,7 @@ static int stateless_connect(const char *service_name)
 	free(rpc.service_url);
 	free(rpc.hdr_content_type);
 	free(rpc.hdr_accept);
+	free(rpc.hdr_accept_language);
 	free(rpc.protocol_header);
 	free(rpc.buf);
 	strbuf_release(&buf);

t/t5541-http-push-smart.sh

@@ -80,6 +80,25 @@ test_expect_success 'push to remote repository (standard)' '
 	 test $HEAD = $(git rev-parse --verify HEAD))
 '
 
+test_expect_success 'push to remote repository (standard) with sending Accept-Language' '
+	cat >exp <<-\EOF &&
+	=> Send header: Accept-Language: ko-KR, *;q=0.9
+	=> Send header: Accept-Language: ko-KR, *;q=0.9
+	EOF
+
+	cd "$ROOT_PATH"/test_repo_clone &&
+	: >path_lang &&
+	git add path_lang &&
+	test_tick &&
+	git commit -m path_lang &&
+	HEAD=$(git rev-parse --verify HEAD) &&
+	GIT_TRACE_CURL=true LANGUAGE="ko_KR.UTF-8" git push -v -v 2>err &&
+	! grep "Expect: 100-continue" err &&
+
+	grep "=> Send header: Accept-Language:" err >err.language &&
+	test_cmp exp err.language
+'
+
 test_expect_success 'push already up-to-date' '
 	git push
 '

t/t5550-http-fetch-dumb.sh

@@ -369,7 +369,7 @@ ja;q=0.95, zh;q=0.94, sv;q=0.93, pt;q=0.92, nb;q=0.91, *;q=0.90" \
 		ko_KR.EUC-KR:en_US.UTF-8:fr_CA:de.UTF-8@euro:sr@latin:ja:zh:sv:pt:nb
 '
 
-test_expect_success 'git client does not send an empty Accept-Language' '
+test_expect_success 'git client send an empty Accept-Language' '
 	GIT_TRACE_CURL=true LANGUAGE= git ls-remote "$HTTPD_URL/dumb/repo.git" 2>stderr &&
 	! grep "^=> Send header: Accept-Language:" stderr
 '

t/t5551-http-fetch-smart.sh

@@ -31,6 +31,7 @@ test_expect_success 'clone http repository' '
 	> GET /smart/repo.git/info/refs?service=git-upload-pack HTTP/1.1
 	> Accept: */*
 	> Accept-Encoding: ENCODINGS
+	> Accept-Language: ko-KR, *;q=0.9
 	> Pragma: no-cache
 	< HTTP/1.1 200 OK
 	< Pragma: no-cache
@@ -40,13 +41,15 @@ test_expect_success 'clone http repository' '
 	> Accept-Encoding: ENCODINGS
 	> Content-Type: application/x-git-upload-pack-request
 	> Accept: application/x-git-upload-pack-result
+	> Accept-Language: ko-KR, *;q=0.9
 	> Content-Length: xxx
 	< HTTP/1.1 200 OK
 	< Pragma: no-cache
 	< Cache-Control: no-cache, max-age=0, must-revalidate
 	< Content-Type: application/x-git-upload-pack-result
 	EOF
-	GIT_TRACE_CURL=true GIT_TEST_PROTOCOL_VERSION=0 \
+
+	GIT_TRACE_CURL=true GIT_TEST_PROTOCOL_VERSION=0 LANGUAGE="ko_KR.UTF-8" \
 		git clone --quiet $HTTPD_URL/smart/repo.git clone 2>err &&
 	test_cmp file clone/file &&
 	tr '\''\015'\'' Q <err |
@@ -94,7 +97,10 @@ test_expect_success 'clone http repository' '
 		test_cmp exp actual.smudged &&
 
 		grep "Accept-Encoding:.*gzip" actual >actual.gzip &&
-		test_line_count = 2 actual.gzip
+		test_line_count = 2 actual.gzip &&
+
+		grep "Accept-Language: ko-KR, *" actual >actual.language &&
+		test_line_count = 2 actual.language
 	fi
 '