Android branch compiled against Gingerbread Patch
Keane, Ben STRX
ben.keane
Wed Apr 25 22:36:13 PDT 2012
Hi,
I recently grabbed the android-stable-2012-03 branch from http://hostap.epitest.fi/hostap.git
I had to modify the source code and Makefile slightly to get it to compile and work with my Gingerbread port (based on rowboat). I would assume that what I have done may not be completely correct, but I hope it is of some use to you.
The following is a list of issues (no particular order)
1. My Android uses libnl1.1, so I had to:
1.1 change the location of the headers
1.2 change the Android.mk to link against version 1.1 instead of 2, and
1.3 change the call to genl_ctrl_alloc_cache() as it had changed between the versions
2. hostapd would exit with chown: permission denied error. This patch changes the chown to use AID_WIFI for uid and gid (because under Android it isn't running as root).
3. If I use CONFIG_TLS=internal I had to add includes to libtommath
For other gingerbread uses this patch includes mods to android.config which are required to get it working on my system.
diff --git a/hostapd/Android.mk b/hostapd/Android.mk
index 8363bd7..989e1f9 100644
--- a/hostapd/Android.mk
+++ b/hostapd/Android.mk
@@ -38,8 +38,15 @@ INCLUDES += $(LOCAL_PATH)/src
INCLUDES += $(LOCAL_PATH)/src/utils
INCLUDES += external/openssl/include
INCLUDES += frameworks/base/cmds/keystore
+ifeq ($(CONFIG_TLS), internal)
+INCLUDES += external/dropbear/libtommath
+endif
ifdef CONFIG_DRIVER_NL80211
+ifdef CONFIG_LIBNL20
INCLUDES += external/libnl-headers
+else
+INCLUDES += external/libnl/include
+endif
endif
@@ -787,6 +794,10 @@ ifdef CONFIG_ANDROID_LOG
L_CFLAGS += -DCONFIG_ANDROID_LOG
endif
+#ifdef CONFIG_ANDROID
+#L_CFLAGS += -DANDROID
+#endif
+
OBJS_c = hostapd_cli.c src/common/wpa_ctrl.c src/utils/os_$(CONFIG_OS).c
OBJS_c += src/utils/eloop.c
ifdef CONFIG_WPA_TRACE
@@ -823,7 +834,14 @@ ifneq ($(BOARD_HOSTAPD_PRIVATE_LIB),)
endif
LOCAL_SHARED_LIBRARIES := libc libcutils libcrypto libssl
ifdef CONFIG_DRIVER_NL80211
+ifdef CONFIG_LIBNL20
LOCAL_STATIC_LIBRARIES += libnl_2
+else
+LOCAL_SHARED_LIBRARIES += libnl
+endif
+endif
+ifeq ($(CONFIG_TLS), internal)
+LOCAL_STATIC_LIBRARIES := libtommath
endif
LOCAL_CFLAGS := $(L_CFLAGS)
LOCAL_SRC_FILES := $(OBJS)
diff --git a/hostapd/android.config b/hostapd/android.config
index 8341d4b..4bbf416 100644
--- a/hostapd/android.config
+++ b/hostapd/android.config
@@ -27,7 +27,7 @@
#LIBNL=/usr/src/libnl
#CFLAGS += -I$(LIBNL)/include
#LIBS += -L$(LIBNL)/lib
-CONFIG_LIBNL20=y
+#CONFIG_LIBNL20=y
# Driver interface for FreeBSD net80211 layer (e.g., Atheros driver)
#CONFIG_DRIVER_BSD=y
@@ -55,25 +55,25 @@ CONFIG_LIBNL20=y
#CONFIG_IEEE80211W=y
# Integrated EAP server
-#CONFIG_EAP=y
+CONFIG_EAP=y
# EAP-MD5 for the integrated EAP server
-#CONFIG_EAP_MD5=y
+CONFIG_EAP_MD5=y
# EAP-TLS for the integrated EAP server
-#CONFIG_EAP_TLS=y
+CONFIG_EAP_TLS=y
# EAP-MSCHAPv2 for the integrated EAP server
-#CONFIG_EAP_MSCHAPV2=y
+CONFIG_EAP_MSCHAPV2=y
# EAP-PEAP for the integrated EAP server
-#CONFIG_EAP_PEAP=y
+CONFIG_EAP_PEAP=y
# EAP-GTC for the integrated EAP server
-#CONFIG_EAP_GTC=y
+CONFIG_EAP_GTC=y
# EAP-TTLS for the integrated EAP server
-#CONFIG_EAP_TTLS=y
+CONFIG_EAP_TTLS=y
# EAP-SIM for the integrated EAP server
#CONFIG_EAP_SIM=y
@@ -128,7 +128,7 @@ CONFIG_PKCS12=y
#CONFIG_RADIUS_SERVER=y
# Build IPv6 support for RADIUS operations
-CONFIG_IPV6=y
+#CONFIG_IPV6=y
# IEEE Std 802.11r-2008 (Fast BSS Transition)
#CONFIG_IEEE80211R=y
@@ -148,6 +148,9 @@ CONFIG_IPV6=y
# Add support for writing debug log to Android logcat instead of standard output
CONFIG_ANDROID_LOG=y
+# Add support for Android in general
+CONFIG_ANDROID=y
+
# Remove support for RADIUS accounting
#CONFIG_NO_ACCOUNTING=y
diff --git a/hostapd/ctrl_iface.c b/hostapd/ctrl_iface.c
index b1bafc1..7c9de18 100644
--- a/hostapd/ctrl_iface.c
+++ b/hostapd/ctrl_iface.c
@@ -34,6 +34,10 @@
#include "config_file.h"
#include "ctrl_iface.h"
+#ifdef ANDROID
+#include <private/android_filesystem_config.h>
+#endif /* ANDROID */
+
struct wpa_ctrl_dst {
struct wpa_ctrl_dst *next;
@@ -848,9 +852,16 @@ int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
}
}
+#ifdef ANDROID
+ if (hapd->conf->ctrl_interface_gid_set &&
+ chown(hapd->conf->ctrl_interface, AID_WIFI,
+ AID_WIFI) < 0) {
+
+#else
if (hapd->conf->ctrl_interface_gid_set &&
chown(hapd->conf->ctrl_interface, 0,
hapd->conf->ctrl_interface_gid) < 0) {
+#endif
perror("chown[ctrl_interface]");
return -1;
}
@@ -906,8 +917,14 @@ int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
}
}
+#ifdef ANDROID
+ if (hapd->conf->ctrl_interface_gid_set &&
+ chown(fname, AID_WIFI, AID_WIFI) < 0) {
+
+#else
if (hapd->conf->ctrl_interface_gid_set &&
chown(fname, 0, hapd->conf->ctrl_interface_gid) < 0) {
+#endif
perror("chown[ctrl_interface/ifname]");
goto fail;
}
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index 4282905..d8fe238 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -2674,7 +2674,16 @@ static int android_genl_ctrl_resolve(struct nl_handle *handle,
struct genl_family *nl80211 = NULL;
int id = -1;
+#ifdef CONFIG_LIBNL20
if (genl_ctrl_alloc_cache(handle, &cache) < 0) {
+#else
+ /*
+ * Android Rowboat (libnl-1.1) has a different genl_ctrl_alloc_cache function prototype
+ */
+ cache = genl_ctrl_alloc_cache(handle);
+ if (cache == NULL) {
+
+#endif
wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
"netlink cache");
goto fail;
I hope this helps the community.
Signed-hostap: Ben Keane <ben.keane at kaelus.com>
Kind Regards,
Ben Keane
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