From 51b674be05aebdb3bd34460eece9f9770b734403 Mon Sep 17 00:00:00 2001
From: Caio Schnepper <caioschnepper@gmail.com>
Date: Mon, 21 Dec 2015 14:49:22 -0200
Subject: [PATCH] galaxys2-common: Use ril-wrapper to stop libsec-ril from
 crashing

Based off dmitry-ril for the Nexus S

Change-Id: I867118237062997c0459e0fb5749b128849f903c
---
 common.mk                 |  5 ++-
 ril-wrapper/Android.mk    |  9 ++++
 ril-wrapper/ril-wrapper.c | 86 +++++++++++++++++++++++++++++++++++++++
 rootdir/init.smdk4210.rc  |  2 +-
 4 files changed, 99 insertions(+), 3 deletions(-)
 create mode 100644 ril-wrapper/Android.mk
 create mode 100644 ril-wrapper/ril-wrapper.c

diff --git a/common.mk b/common.mk
index a4df37d..3ed779c 100644
--- a/common.mk
+++ b/common.mk
@@ -59,9 +59,10 @@ PRODUCT_PACKAGES := \
     com.android.future.usb.accessory \
     SamsungServiceMode
 
-# Samsung symbols
+# Legacy RIL
 PRODUCT_PACKAGES += \
-    libsamsung_symbols
+    libsamsung_symbols \
+    ril-wrapper
 
 # Audio Packages
 PRODUCT_PACKAGES += \
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..8371870
--- /dev/null
+++ b/ril-wrapper/ril-wrapper.c
@@ -0,0 +1,86 @@
+#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;
+
+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;
+
+	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/rootdir/init.smdk4210.rc b/rootdir/init.smdk4210.rc
index 7a22741..b399584 100644
--- a/rootdir/init.smdk4210.rc
+++ b/rootdir/init.smdk4210.rc
@@ -2,7 +2,7 @@ import init.smdk4210.usb.rc
 import init.gps.rc
 
 on init
-    export LD_SHIM_LIBS /system/lib/libril.so|libsamsung_symbols.so
+    export LD_SHIM_LIBS /system/lib/libsec-ril.so|libsamsung_symbols.so
 
     mkdir /efs 0771 radio system
     mkdir /preload 0771 system system