httpd,telnetd: make default port configurable

BusyBox on Termux can't use ports less than 1024 it's patched to change default port for httpd to 8080 and telnetd to 8023.

https://github.com/termux/termux-packages/blob/master/packages/busybox/0011-networking-telnetd-default-port.patch
https://github.com/termux/termux-packages/blob/master/packages/busybox/0010-networking-httpd-default-port.patch

To avoid such patches we can make port configurable.

function                                             old     new   delta
packed_usage                                       33920   33914      -6

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

3 files changed, 21 insertions, 4 deletions

diff --git a/include/usage.src.h b/include/usage.src.h
index 1ac252d1b..5d2038834 100644
--- a/include/usage.src.h
+++ b/include/usage.src.h
@@ -31,6 +31,9 @@
 # define ADJTIME_PATH "/etc/adjtime"
 #endif
 
+#define STR1(s) #s
+#define STR(s)  STR1(s)
+
 INSERT
 
 #define busybox_notes_usage \
diff --git a/networking/httpd.c b/networking/httpd.c
index 56ab85b82..9972a5378 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -102,6 +102,11 @@
 //config:	help
 //config:	HTTP server.
 //config:
+//config:config FEATURE_HTTPD_PORT_DEFAULT
+//config:	int "Default port"
+//config:	default 80
+//config:	range 1 65535
+//config:
 //config:config FEATURE_HTTPD_RANGES
 //config:	bool "Support 'Ranges:' header"
 //config:	default y
@@ -270,7 +275,7 @@
 //usage:     "\n	-i		Inetd mode"
 //usage:     "\n	-f		Don't daemonize"
 //usage:     "\n	-v[v]		Verbose"
-//usage:     "\n	-p [IP:]PORT	Bind to IP:PORT (default *:80)"
+//usage:     "\n	-p [IP:]PORT	Bind to IP:PORT (default *:"STR(CONFIG_FEATURE_HTTPD_PORT_DEFAULT)")"
 //usage:	IF_FEATURE_HTTPD_SETUID(
 //usage:     "\n	-u USER[:GRP]	Set uid/gid after binding to port")
 //usage:	IF_FEATURE_HTTPD_BASIC_AUTH(
@@ -316,6 +321,9 @@
 
 #define HEADER_READ_TIMEOUT 60
 
+#define STR1(s) #s
+#define STR(s) STR1(s)
+
 static const char DEFAULT_PATH_HTTPD_CONF[] ALIGN1 = "/etc";
 static const char HTTPD_CONF[] ALIGN1 = "httpd.conf";
 static const char HTTP_200[] ALIGN1 = "HTTP/1.1 200 OK\r\n";
@@ -542,7 +550,7 @@ enum {
 	SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
 	IF_FEATURE_HTTPD_BASIC_AUTH(g_realm = "Web Server Authentication";) \
 	IF_FEATURE_HTTPD_RANGES(range_start = -1;) \
-	bind_addr_or_port = "80"; \
+	bind_addr_or_port = STR(CONFIG_FEATURE_HTTPD_PORT_DEFAULT); \
 	index_page = index_html; \
 	file_size = -1; \
 } while (0)
diff --git a/networking/telnetd.c b/networking/telnetd.c
index de4d733f9..581da1924 100644
--- a/networking/telnetd.c
+++ b/networking/telnetd.c
@@ -68,6 +68,12 @@
 //config:	help
 //config:	Selecting this will make telnetd able to run standalone.
 //config:
+//config:config FEATURE_TELNETD_PORT_DEFAULT
+//config:	int "Default port"
+//config:	default 23
+//config:	range 1 65535
+//config:	depends on FEATURE_TELNETD_STANDALONE
+//config:
 //config:config FEATURE_TELNETD_INETD_WAIT
 //config:	bool "Support -w SEC option (inetd wait mode)"
 //config:	default y
@@ -103,7 +109,7 @@
 //usage:     "\n	-K		Close connection as soon as login exits"
 //usage:     "\n			(normally wait until all programs close slave pty)"
 //usage:	IF_FEATURE_TELNETD_STANDALONE(
-//usage:     "\n	-p PORT		Port to listen on"
+//usage:     "\n	-p PORT		Port to listen on. Default "STR(CONFIG_FEATURE_TELNETD_PORT_DEFAULT)
 //usage:     "\n	-b ADDR[:PORT]	Address to bind to"
 //usage:     "\n	-F		Run in foreground"
 //usage:     "\n	-i		Inetd mode"
@@ -708,7 +714,7 @@ int telnetd_main(int argc UNUSED_PARAM, char **argv)
 	} else {
 		master_fd = 0;
 		if (!(opt & OPT_WAIT)) {
-			unsigned portnbr = 23;
+			unsigned portnbr = CONFIG_FEATURE_TELNETD_PORT_DEFAULT;
 			if (opt & OPT_PORT)
 				portnbr = xatou16(opt_portnbr);
 			master_fd = create_and_bind_stream_or_die(opt_bindaddr, portnbr);