1 files changed, 99 insertions, 0 deletions
diff --git a/rilsrc/libsecril-shim/secril-shim.c b/rilsrc/libsecril-shim/secril-shim.c
new file mode 100644
index 0000000..50723e3
--- /dev/null
+++ b/rilsrc/libsecril-shim/secril-shim.c
@@ -0,0 +1,99 @@
+#include "secril-shim.h"
+
+/* A copy of the original RIL function table. */
+static const RIL_RadioFunctions *origRilFunctions;
+
+/* A copy of the ril environment passed to RIL_Init. */
+static const struct RIL_Env *rilEnv;
+
+static void onRequestShim(int request, void *data, size_t datalen, RIL_Token t)
+{
+	switch (request) {
+		/* Necessary; RILJ may fake this for us if we reply not supported, but we can just implement it. */
+		case RIL_REQUEST_GET_RADIO_CAPABILITY:
+			; /* lol C standard */
+			RIL_RadioCapability rc[1] =
+			{
+				{ /* rc[0] */
+					RIL_RADIO_CAPABILITY_VERSION, /* version */
+					0, /* session */
+					RC_PHASE_CONFIGURED, /* phase */
+					RAF_GSM | RAF_GPRS | RAF_EDGE | RAF_HSUPA | RAF_HSDPA | RAF_HSPA | RAF_HSPAP | RAF_UMTS, /* rat */
+					{ /* logicalModemUuid */
+						0,
+					},
+					RC_STATUS_SUCCESS /* status */
+				}
+			};
+			RLOGW("%s: got request %s: replied with our implementation!\n", __func__, requestToString(request));
+			rilEnv->OnRequestComplete(t, RIL_E_SUCCESS, rc, sizeof(rc));
+			return;
+
+		/* The following requests were introduced post-4.3. */
+		case RIL_REQUEST_SIM_TRANSMIT_APDU_BASIC:
+		case RIL_REQUEST_SIM_OPEN_CHANNEL: /* !!! */
+		case RIL_REQUEST_SIM_CLOSE_CHANNEL:
+		case RIL_REQUEST_SIM_TRANSMIT_APDU_CHANNEL:
+		case RIL_REQUEST_NV_READ_ITEM:
+		case RIL_REQUEST_NV_WRITE_ITEM:
+		case RIL_REQUEST_NV_WRITE_CDMA_PRL:
+		case RIL_REQUEST_NV_RESET_CONFIG:
+		case RIL_REQUEST_SET_UICC_SUBSCRIPTION:
+		case RIL_REQUEST_ALLOW_DATA:
+		case RIL_REQUEST_GET_HARDWARE_CONFIG:
+		case RIL_REQUEST_SIM_AUTHENTICATION:
+		case RIL_REQUEST_GET_DC_RT_INFO:
+		case RIL_REQUEST_SET_DC_RT_INFO_RATE:
+		case RIL_REQUEST_SET_DATA_PROFILE:
+		case RIL_REQUEST_SHUTDOWN: /* TODO: Is there something we can do for RIL_REQUEST_SHUTDOWN ? */
+		case RIL_REQUEST_SET_RADIO_CAPABILITY:
+		case RIL_REQUEST_START_LCE:
+		case RIL_REQUEST_STOP_LCE:
+		case RIL_REQUEST_PULL_LCEDATA:
+			RLOGW("%s: got request %s: replied with REQUEST_NOT_SUPPPORTED.\n", __func__, requestToString(request));
+			rilEnv->OnRequestComplete(t, RIL_E_REQUEST_NOT_SUPPORTED, NULL, 0);
+			return;
+	}
+
+	RLOGD("%s: got request %s: forwarded to RIL.\n", __func__, requestToString(request));
+	origRilFunctions->onRequest(request, data, datalen, t);
+}
+
+const RIL_RadioFunctions* RIL_Init(const struct RIL_Env *env, int argc, char **argv)
+{
+	RIL_RadioFunctions const* (*origRilInit)(const struct RIL_Env *env, int argc, char **argv);
+	static RIL_RadioFunctions shimmedFunctions;
+	void *origRil;
+
+	rilEnv = env;
+
+	/* Open and Init the original RIL. */
+
+	origRil = dlopen(RIL_LIB_PATH, RTLD_LOCAL);
+	if (CC_UNLIKELY(!origRil)) {
+		RLOGE("%s: failed to load '" RIL_LIB_PATH  "': %s\n", __func__, dlerror());
+		return NULL;
+	}
+
+	origRilInit = dlsym(origRil, "RIL_Init");
+	if (CC_UNLIKELY(!origRilInit)) {
+		RLOGE("%s: couldn't find original RIL_Init!\n", __func__);
+		goto fail_after_dlopen;
+	}
+
+	origRilFunctions = origRilInit(env, argc, argv);
+	if (CC_UNLIKELY(!origRilFunctions)) {
+		RLOGE("%s: the original RIL_Init derped.\n", __func__);
+		goto fail_after_dlopen;
+	}
+
+	/* Shim functions as needed. */
+	shimmedFunctions = *origRilFunctions;
+	shimmedFunctions.onRequest = onRequestShim;
+
+	return &shimmedFunctions;
+
+fail_after_dlopen:
+	dlclose(origRil);
+	return NULL;
+}