http_init: accept separate URL parameter

The http_init function takes a "struct remote". Part of its
initialization procedure is to look at the remote's url and
grab some auth-related parameters. However, using the url
included in the remote is:

  - wrong; the remote-curl helper may have a separate,
    unrelated URL (e.g., from remote.*.pushurl). Looking at
    the remote's configured url is incorrect.

  - incomplete; http-fetch doesn't have a remote, so passes
    NULL. So http_init never gets to see the URL we are
    actually going to use.

  - cumbersome; http-push has a similar problem to
    http-fetch, but actually builds a fake remote just to
    pass in the URL.

Instead, let's just add a separate URL parameter to
http_init, and all three callsites can pass in the
appropriate information.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

http-fetch.c

@@ -63,7 +63,7 @@ int main(int argc, const char **argv)
 
 	git_config(git_default_config, NULL);
 
-	http_init(NULL);
+	http_init(NULL, url);
 	walker = get_http_walker(url);
 	walker->get_tree = get_tree;
 	walker->get_history = get_history;

http-push.c

@@ -1747,7 +1747,6 @@ int main(int argc, char **argv)
 	int i;
 	int new_refs;
 	struct ref *ref, *local_refs;
-	struct remote *remote;
 
 	git_extract_argv0_path(argv[0]);
 
@@ -1821,14 +1820,7 @@ int main(int argc, char **argv)
 
 	memset(remote_dir_exists, -1, 256);
 
-	/*
-	 * Create a minimum remote by hand to give to http_init(),
-	 * primarily to allow it to look at the URL.
-	 */
-	remote = xcalloc(sizeof(*remote), 1);
-	ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
-	remote->url[remote->url_nr++] = repo->url;
-	http_init(remote);
+	http_init(NULL, repo->url);
 
 #ifdef USE_CURL_MULTI
 	is_running_queue = 0;

http.c

@@ -369,7 +369,7 @@ static void set_from_env(const char **var, const char *envname)
 		*var = val;
 }
 
-void http_init(struct remote *remote)
+void http_init(struct remote *remote, const char *url)
 {
 	char *low_speed_limit;
 	char *low_speed_time;
@@ -433,11 +433,11 @@ void http_init(struct remote *remote)
 	if (getenv("GIT_CURL_FTP_NO_EPSV"))
 		curl_ftp_no_epsv = 1;
 
-	if (remote && remote->url && remote->url[0]) {
-		http_auth_init(remote->url[0]);
+	if (url) {
+		http_auth_init(url);
 		if (!ssl_cert_password_required &&
 		    getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
-		    !prefixcmp(remote->url[0], "https://"))
+		    !prefixcmp(url, "https://"))
 			ssl_cert_password_required = 1;
 	}
 

http.h

@@ -86,7 +86,7 @@ extern void add_fill_function(void *data, int (*fill)(void *));
 extern void step_active_slots(void);
 #endif
 
-extern void http_init(struct remote *remote);
+extern void http_init(struct remote *remote, const char *url);
 extern void http_cleanup(void);
 
 extern int data_received;

remote-curl.c

@@ -850,7 +850,7 @@ int main(int argc, const char **argv)
 
 	url = strbuf_detach(&buf, NULL);
 
-	http_init(remote);
+	http_init(remote, url);
 
 	do {
 		if (strbuf_getline(&buf, stdin, '\n') == EOF)