[PATCH] Set proxy override with http_init()

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In transport.c, proxy setting (the one from the remote conf) was set through
curl_easy_setopt() call, while http.c already does the same with the
http.proxy setting. We now just use this infrastructure instead, and make
http_init() now take the proxy url as argument.

At the same time, we make get_http_walker() take a proxy argument too, and
pass it to http_init(), which makes remote defined proxy be used for more
than get_refs_via_curl().

Signed-off-by: Mike Hommey <mh@xxxxxxxxxxxx>
---
 > Note that remote.<name>.proxy config doesn't work as expected, you
 > should use http.proxy which just work (and the change in transport.c is
 > useless, then). I have, as part of by http-refactoring topic, a patch
 > for remote.<name>.proxy to work better, though it doesn't support
 > changing the proxy authentication method.
 
 And here is said patch.

 http-push.c   |    2 +-
 http-walker.c |    4 ++--
 http.c        |   10 +++++++++-
 http.h        |    2 +-
 transport.c   |    9 ++++-----
 walker.h      |    2 +-
 6 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/http-push.c b/http-push.c
index 0beb740..04e056d 100644
--- a/http-push.c
+++ b/http-push.c
@@ -2240,7 +2240,7 @@ int main(int argc, char **argv)
 
 	memset(remote_dir_exists, -1, 256);
 
-	http_init();
+	http_init(NULL);
 
 	no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
 
diff --git a/http-walker.c b/http-walker.c
index 2c37868..02be6c8 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -902,13 +902,13 @@ static void cleanup(struct walker *walker)
 	curl_slist_free_all(data->no_pragma_header);
 }
 
-struct walker *get_http_walker(const char *url)
+struct walker *get_http_walker(const char *url, const char *proxy)
 {
 	char *s;
 	struct walker_data *data = xmalloc(sizeof(struct walker_data));
 	struct walker *walker = xmalloc(sizeof(struct walker));
 
-	http_init();
+	http_init(proxy);
 
 	data->no_pragma_header = curl_slist_append(NULL, "Pragma:");
 
diff --git a/http.c b/http.c
index 519621a..89194d7 100644
--- a/http.c
+++ b/http.c
@@ -219,13 +219,16 @@ static CURL* get_curl_handle(void)
 	return result;
 }
 
-void http_init(void)
+void http_init(const char *proxy)
 {
 	char *low_speed_limit;
 	char *low_speed_time;
 
 	curl_global_init(CURL_GLOBAL_ALL);
 
+	if (proxy)
+		curl_http_proxy = xstrdup(proxy);
+
 	pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
 
 #ifdef USE_CURL_MULTI
@@ -315,6 +318,11 @@ void http_cleanup(void)
 
 	curl_slist_free_all(pragma_header);
 	pragma_header = NULL;
+
+	if (curl_http_proxy) {
+		free(curl_http_proxy);
+		curl_http_proxy = NULL;
+	}
 }
 
 struct active_request_slot *get_active_slot(void)
diff --git a/http.h b/http.h
index 9bab2c8..dcd5cea 100644
--- a/http.h
+++ b/http.h
@@ -83,7 +83,7 @@ extern void add_fill_function(void *data, int (*fill)(void *));
 extern void step_active_slots(void);
 #endif
 
-extern void http_init(void);
+extern void http_init(const char *proxy);
 extern void http_cleanup(void);
 
 extern int data_received;
diff --git a/transport.c b/transport.c
index 397983d..26f0f02 100644
--- a/transport.c
+++ b/transport.c
@@ -442,7 +442,8 @@ static struct ref *get_refs_via_curl(struct transport *transport)
 	struct ref *last_ref = NULL;
 
 	if (!transport->data)
-		transport->data = get_http_walker(transport->url);
+		transport->data = get_http_walker(transport->url,
+						transport->remote->http_proxy);
 
 	refs_url = xmalloc(strlen(transport->url) + 11);
 	sprintf(refs_url, "%s/info/refs", transport->url);
@@ -453,9 +454,6 @@ static struct ref *get_refs_via_curl(struct transport *transport)
 	curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
 	curl_easy_setopt(slot->curl, CURLOPT_URL, refs_url);
 	curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL);
-	if (transport->remote->http_proxy)
-		curl_easy_setopt(slot->curl, CURLOPT_PROXY,
-				 transport->remote->http_proxy);
 
 	if (start_active_slot(slot)) {
 		run_active_slot(slot);
@@ -509,7 +507,8 @@ static int fetch_objs_via_curl(struct transport *transport,
 				 int nr_objs, struct ref **to_fetch)
 {
 	if (!transport->data)
-		transport->data = get_http_walker(transport->url);
+		transport->data = get_http_walker(transport->url,
+						transport->remote->http_proxy);
 	return fetch_objs_via_walker(transport, nr_objs, to_fetch);
 }
 
diff --git a/walker.h b/walker.h
index ea2c363..2cc448a 100644
--- a/walker.h
+++ b/walker.h
@@ -32,6 +32,6 @@ int walker_fetch(struct walker *impl, int targets, char **target,
 
 void walker_free(struct walker *walker);
 
-struct walker *get_http_walker(const char *url);
+struct walker *get_http_walker(const char *url, const char *proxy);
 
 #endif /* WALKER_H */
-- 
1.5.4.1.48.g0d77

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