From a6dde2b6078ba30ff37aa9d2a5aabf7b3def89f6 Mon Sep 17 00:00:00 2001
From: Simon Shields <keepcalm444@gmail.com>
Date: Tue, 24 May 2016 23:09:42 +0200
Subject: n5100 : fake GET_RADIO_CAPABILITY response

Change-Id: I7ae2a38bf144cd68322d9b7aa6fc7fb41fefb7ae
---
 n5100.mk                  |  4 +-
 ril-wrapper/Android.mk    |  9 +++++
 ril-wrapper/ril-wrapper.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++
 system.prop               |  5 +--
 4 files changed, 112 insertions(+), 5 deletions(-)
 create mode 100644 ril-wrapper/Android.mk
 create mode 100644 ril-wrapper/ril-wrapper.c

diff --git a/n5100.mk b/n5100.mk
index 3921258..6ce2b82 100755
--- a/n5100.mk
+++ b/n5100.mk
@@ -24,8 +24,8 @@ PRODUCT_COPY_FILES += \
 
 # Packages
 PRODUCT_PACKAGES += \
-    libsecril-client-sap \
-    libsamsung_symbols
+    libsamsung_symbols \
+    ril-wrapper
 
 # RIL
 PRODUCT_PROPERTY_OVERRIDES += \
diff --git a/ril-wrapper/Android.mk b/ril-wrapper/Android.mk
new file mode 100644
index 0000000..698e1d3
--- /dev/null
+++ b/ril-wrapper/Android.mk
@@ -0,0 +1,9 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= ril-wrapper.c
+LOCAL_SHARED_LIBRARIES := liblog libbinder
+LOCAL_MODULE:= ril-wrapper
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/ril-wrapper/ril-wrapper.c b/ril-wrapper/ril-wrapper.c
new file mode 100644
index 0000000..886cb34
--- /dev/null
+++ b/ril-wrapper/ril-wrapper.c
@@ -0,0 +1,99 @@
+#define LOG_TAG "RilWrapper"
+#define RIL_SHLIB
+#include <telephony/ril_cdma_sms.h>
+#include <sys/system_properties.h>
+#include <telephony/librilutils.h>
+#include <cutils/sockets.h>
+#include <telephony/ril.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <utils/Log.h>
+#include <sys/stat.h>
+#include <pthread.h>
+#include <termios.h>
+#include <alloca.h>
+#include <assert.h>
+#include <getopt.h>
+#include <string.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+
+#define REAL_RIL_NAME				"/system/lib/libsec-ril.so"
+
+
+static RIL_RadioFunctions const *mRealRadioFuncs;
+static const struct RIL_Env *mEnv;
+
+static void rilOnRequest(int request, void *data, size_t datalen, RIL_Token t)
+{
+    switch (request) {
+        case RIL_REQUEST_GET_RADIO_CAPABILITY:
+            RLOGW("Returning NOT_SUPPORTED on GET_RADIO_CAPABILITY");
+            mEnv->OnRequestComplete(t, RIL_E_REQUEST_NOT_SUPPORTED, NULL, 0);
+            break;
+        default:
+            mRealRadioFuncs->onRequest(request, data, datalen, t);
+    }
+}
+
+const RIL_RadioFunctions* RIL_Init(const struct RIL_Env *env, int argc, char **argv)
+{
+	RIL_RadioFunctions const* (*fRealRilInit)(const struct RIL_Env *env, int argc, char **argv);
+	static RIL_RadioFunctions rilInfo;
+	void *realRilLibHandle;
+	int i;
+
+
+	//save the env;
+	mEnv = env;
+
+	//get the real RIL
+	realRilLibHandle = dlopen(REAL_RIL_NAME, RTLD_LOCAL);
+	if (!realRilLibHandle) {
+		RLOGE("Failed to load the real RIL '" REAL_RIL_NAME  "': %s\n", dlerror());
+		return NULL;
+	}
+
+	//remove "-c" command line as Samsung's RIL does not understand it - it just barfs instead
+	for (i = 0; i < argc; i++) {
+		if (!strcmp(argv[i], "-c") && i != argc -1) {	//found it
+			memcpy(argv + i, argv + i + 2, sizeof(char*[argc - i - 2]));
+			argc -= 2;
+		}
+	}
+
+	//load the real RIL
+	fRealRilInit = dlsym(realRilLibHandle, "RIL_Init");
+	if (!fRealRilInit) {
+		RLOGE("Failed to find the real RIL's entry point\n");
+		goto out_fail;
+	}
+
+	RLOGD("Calling the real RIL's entry point with %u args\n", argc);
+	for (i = 0; i < argc; i++)
+		RLOGD("  argv[%2d] = '%s'\n", i, argv[i]);
+
+	//try to init the real ril
+	mRealRadioFuncs = fRealRilInit(env, argc, argv);
+	if (!mRealRadioFuncs) {
+		RLOGE("The real RIL's entry point failed\n");
+		goto out_fail;
+	}
+
+	//copy the real RIL's info struct, then replace the onRequest pointer with our own
+	rilInfo = *mRealRadioFuncs;
+	rilInfo.onRequest = rilOnRequest;
+
+	RLOGD("Wrapped RIL version is '%s'\n", mRealRadioFuncs->getVersion());
+
+	//we're all good - return to caller
+	return &rilInfo;
+
+out_fail:
+	dlclose(realRilLibHandle);
+	return NULL;
+}
diff --git a/system.prop b/system.prop
index 6b73a5f..67bcb37 100755
--- a/system.prop
+++ b/system.prop
@@ -2,10 +2,9 @@
 # system.prop for smdk4x12
 #
 dalvik.vm.dexopt-data-only=1
-rild.libpath=/system/lib/libsec-ril.so
+rild.libpath=/system/lib/ril-wrapper.so
 rild.libargs=-d /dev/ttyS0
 ro.sf.hwrotation=270
 ro.sf.lcd_density=213
 ro.lcd_min_brightness=20
-ro.hdcp2.rx=tz
-persist.radio.apm_sim_not_pwdn=1
+ro.hdcp2.rx=tz
\ No newline at end of file
-- 
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