diff options
Diffstat (limited to 'ril/libsecril-shim/secril-shim.c')
| -rw-r--r-- | ril/libsecril-shim/secril-shim.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/ril/libsecril-shim/secril-shim.c b/ril/libsecril-shim/secril-shim.c deleted file mode 100644 index b725d66..0000000 --- a/ril/libsecril-shim/secril-shim.c +++ /dev/null @@ -1,175 +0,0 @@ -#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; - -/* The tuna variant we're running on. */ -static int tunaVariant = VARIANT_INIT; - - -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 */ - int raf = RAF_UNKNOWN; - if (tunaVariant == VARIANT_MAGURO) { - raf = RAF_GSM | RAF_GPRS | RAF_EDGE | RAF_HSUPA | RAF_HSDPA | RAF_HSPA | RAF_HSPAP | RAF_UMTS; - } else if (tunaVariant == VARIANT_TORO || tunaVariant == VARIANT_TOROPLUS) { - raf = RAF_LTE | RAF_IS95A | RAF_IS95B | RAF_1xRTT | RAF_EVDO_0 | RAF_EVDO_A | RAF_EVDO_B | RAF_EHRPD; - } - if (CC_LIKELY(raf != RAF_UNKNOWN)) { - RIL_RadioCapability rc[1] = - { - { /* rc[0] */ - RIL_RADIO_CAPABILITY_VERSION, /* version */ - 0, /* session */ - RC_PHASE_CONFIGURED, /* phase */ - raf, /* 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; - } - /* else fallthrough to RIL_E_REQUEST_NOT_SUPPORTED */ - - /* 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); -} - -static void patchMem(void *libHandle, bool beforeRilInit) -{ - /* hSecOem is a nice symbol to use, it's in all 3 RILs and gives us easy - * access to the memory region we're generally most interested in. */ - uint8_t *hSecOem; - - hSecOem = dlsym(libHandle, "hSecOem"); - if (CC_UNLIKELY(!hSecOem)) { - RLOGE("%s: hSecOem could not be found!\n", __func__); - return; - } - - RLOGD("%s: hSecOem found at %p!\n", __func__, hSecOem); - - switch (tunaVariant) { - case VARIANT_MAGURO: - if (!beforeRilInit) { - /* 'ril features' is (only) used to enable/disable an extension - * to LAST_CALL_FAIL_CAUSE. Android had just been happily - * ignoring the extra data being sent, until it did introduce a - * vendor extension for LAST_CALL_FAIL_CAUSE in Android 6.0; - * of course it doesn't like this RIL's extra data now (crashes), - * so we need to disable it. rilFeatures is initialized in - * RIL_Init, so defer it until afterwards. */ - uint8_t *rilFeatures = hSecOem + 0x1918; - - RLOGD("%s: rilFeatures is currently %" PRIu8 "\n", __func__, *rilFeatures); - if (CC_LIKELY(*rilFeatures == 1)) { - *rilFeatures = 0; - RLOGI("%s: rilFeatures was changed to %" PRIu8 "\n", __func__, *rilFeatures); - } else { - RLOGD("%s: rilFeatures was not 1; leaving alone\n", __func__); - } - } - break; - case VARIANT_TORO: - break; - case VARIANT_TOROPLUS: - break; - } -} - -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; - char propBuf[PROPERTY_VALUE_MAX]; - - if (CC_LIKELY(tunaVariant == VARIANT_INIT)) { - property_get("ro.product.device", propBuf, "unknown"); - if (!strcmp(propBuf, "maguro")) { - tunaVariant = VARIANT_MAGURO; - } else if (!strcmp(propBuf, "toro")) { - tunaVariant = VARIANT_TORO; - } else if (!strcmp(propBuf, "toroplus")) { - tunaVariant = VARIANT_TOROPLUS; - } else { - tunaVariant = VARIANT_UNKNOWN; - } - RLOGD("%s: got tuna variant: %i", __func__, tunaVariant); - } - - 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; - } - - /* Fix RIL issues by patching memory: pre-init pass. */ - patchMem(origRil, true); - - origRilFunctions = origRilInit(env, argc, argv); - if (CC_UNLIKELY(!origRilFunctions)) { - RLOGE("%s: the original RIL_Init derped.\n", __func__); - goto fail_after_dlopen; - } - - /* Fix RIL issues by patching memory: post-init pass. */ - patchMem(origRil, false); - - /* Shim functions as needed. */ - shimmedFunctions = *origRilFunctions; - shimmedFunctions.onRequest = onRequestShim; - - return &shimmedFunctions; - -fail_after_dlopen: - dlclose(origRil); - return NULL; -} |