lib/url: Include port in pb_url_to_string()

And include a pxe-parser test which uses a port in the path prefix to
exercise this. This could cause PXE discovery failures if parameters
such as pathprefix included a port in the URL.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
(cherry picked from commit 28d0d70)

lib/url/url.c

@@ -234,10 +234,17 @@ bool is_url(const char *str)
 char *pb_url_to_string(struct pb_url *url)
 {
 	const struct pb_scheme_info *scheme = pb_url_scheme_info(url->scheme);
+	char *str, *port;
 	assert(scheme);
 
-	return talloc_asprintf(url, "%s://%s%s", scheme->str,
-			scheme->has_host ? url->host : "", url->path);
+	port = url->port ? talloc_asprintf(url, ":%s", url->port) : NULL;
+
+	str = talloc_asprintf(url, "%s://%s%s%s", scheme->str,
+			scheme->has_host ? url->host : "",
+			port ?: "", url->path);
+
+	talloc_free(port);
+	return str;
 }
 
 static void pb_url_update_full(struct pb_url *url)

test/parser/Makefile.am

@@ -65,6 +65,7 @@ parser_TESTS = \
 	test/parser/test-pxe-non-url-pathprefix-with-conf \
 	test/parser/test-pxe-pathprefix-discover \
 	test/parser/test-pxe-pathprefix-discover-mac \
+	test/parser/test-pxe-pathprefix-port \
 	test/parser/test-pxe-path-resolve-relative \
 	test/parser/test-pxe-path-resolve-absolute \
 	test/parser/test-pxe-discover-bootfile-root \

test/parser/test-pxe-pathprefix-port.c

@@ -0,0 +1,40 @@
+
+#include "parser-test.h"
+
+#if 0 /* PARSER_EMBEDDED_CONFIG */
+default linux
+
+label linux
+kernel ./kernel
+append command line
+initrd /initrd
+#endif
+
+void run_test(struct parser_test *test)
+{
+	struct discover_boot_option *opt;
+	struct discover_context *ctx;
+
+	test_read_conf_embedded_url(test,
+			"http://host:8080/path/to/pxelinux.cfg/default");
+
+	test_set_event_source(test);
+	test_set_event_param(test->ctx->event, "ip", "192.168.0.1");
+	test_set_event_param(test->ctx->event, "pxepathprefix",
+			"http://host:8080/path/to/");
+
+	test_run_parser(test, "pxe");
+
+	ctx = test->ctx;
+
+	check_boot_option_count(ctx, 1);
+	opt = get_boot_option(ctx, 0);
+
+	check_name(opt, "linux");
+	check_args(opt, "command line");
+
+	check_resolved_url_resource(opt->boot_image,
+			"http://host:8080/path/to/./kernel");
+	check_resolved_url_resource(opt->initrd,
+			"http://host:8080/path/to/initrd");
+}