libbb: new option FEATURE_ETC_SERVICES: if off, /etc/services reads often avoided
In practice, "wget http://host.com/" always uses port 80.
People explicitly set non-standard ports via options or parameters
("telnet 1.2.3.4 567" or "telnet 1.2.3.4 ftp") instead of modifying
/etc/services.
function old new delta
telnet_main 1466 1464 -2
rdate_main 215 198 -17
fakeidentd_main 269 252 -17
parse_url 459 392 -67
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(add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-103) Total: -103 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/libbb/Config.src b/libbb/Config.src
index fdf8bbb..16e1648 100644
--- a/libbb/Config.src
+++ b/libbb/Config.src
@@ -76,6 +76,18 @@
a rarely used feature which allows you to use names
instead of IP/mask pairs in route command.
+config FEATURE_ETC_SERVICES
+ bool "Consult /etc/services even for well-known ports"
+ default n
+ help
+ Look up e.g. "telnet" and "http" in /etc/services file
+ instead of assuming ports 23 and 80.
+ This is almost never necessary (everybody uses standard ports),
+ and it makes sense to avoid reading this file.
+ If you disable this option, in the cases where port is explicitly
+ specified as a service name (e.g. "telnet HOST PORTNAME"),
+ it will still be looked up in /etc/services.
+
config FEATURE_EDITING
bool "Command line editing"
default y