hostapd: support optional argument for the -v switch of hostapd and wpa_supplicant to query build features, e.g. hostapd -veap to test whether 802.11i support is compiled in

SVN-Revision: 29507

package/hostapd/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=hostapd
 PKG_VERSION:=20111103
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_REV:=6caaae1e48da247b21b54ea6001646597e35d9b1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2

package/hostapd/patches/900-indicate-features.patch

@@ -0,0 +1,82 @@
+--- a/hostapd/main.c
++++ b/hostapd/main.c
+@@ -19,6 +19,7 @@
+ 
+ #include "utils/common.h"
+ #include "utils/eloop.h"
++#include "utils/build_features.h"
+ #include "crypto/random.h"
+ #include "crypto/tls.h"
+ #include "common/version.h"
+@@ -574,7 +575,7 @@ int main(int argc, char *argv[])
+ 
+ 	wpa_supplicant_event = hostapd_wpa_event;
+ 	for (;;) {
+-		c = getopt(argc, argv, "Bde:f:hKP:tv");
++		c = getopt(argc, argv, "Bde:f:hKP:tv::");
+ 		if (c < 0)
+ 			break;
+ 		switch (c) {
+@@ -606,6 +607,8 @@ int main(int argc, char *argv[])
+ 			wpa_debug_timestamp++;
+ 			break;
+ 		case 'v':
++			if (optarg)
++				exit(!has_feature(optarg));
+ 			show_version();
+ 			exit(1);
+ 			break;
+--- a/wpa_supplicant/main.c
++++ b/wpa_supplicant/main.c
+@@ -18,6 +18,7 @@
+ #endif /* __linux__ */
+ 
+ #include "common.h"
++#include "build_features.h"
+ #include "wpa_supplicant_i.h"
+ #include "driver_i.h"
+ 
+@@ -146,7 +147,7 @@ int main(int argc, char *argv[])
+ 	wpa_supplicant_fd_workaround();
+ 
+ 	for (;;) {
+-		c = getopt(argc, argv, "b:Bc:C:D:de:f:g:hH:i:KLNo:O:p:P:qstuvW");
++		c = getopt(argc, argv, "b:Bc:C:D:de:f:g:hH:i:KLNo:O:p:P:qstuv::W");
+ 		if (c < 0)
+ 			break;
+ 		switch (c) {
+@@ -233,8 +234,12 @@ int main(int argc, char *argv[])
+ 			break;
+ #endif /* CONFIG_DBUS */
+ 		case 'v':
+-			printf("%s\n", wpa_supplicant_version);
+-			exitcode = 0;
++			if (optarg) {
++				exitcode = !has_feature(optarg);
++			} else {
++				printf("%s\n", wpa_supplicant_version);
++				exitcode = 0;
++			}
+ 			goto out;
+ 		case 'W':
+ 			params.wait_for_monitor++;
+--- /dev/null
++++ b/src/utils/build_features.h
+@@ -0,0 +1,17 @@
++#ifndef BUILD_FEATURES_H
++#define BUILD_FEATURES_H
++
++static inline int has_feature(const char *feat)
++{
++#ifdef IEEE8021X_EAPOL
++	if (!strcmp(feat, "eap"))
++		return 1;
++#endif
++#ifdef IEEE80211N
++	if (!strcmp(feat, "11n"))
++		return 1;
++#endif
++	return 0;
++}
++
++#endif /* BUILD_FEATURES_H */