diff options
Diffstat (limited to 'exynos4/ril/libsecril-client-sap/secril-client-sap.cpp')
| -rwxr-xr-x | exynos4/ril/libsecril-client-sap/secril-client-sap.cpp | 855 |
1 files changed, 855 insertions, 0 deletions
diff --git a/exynos4/ril/libsecril-client-sap/secril-client-sap.cpp b/exynos4/ril/libsecril-client-sap/secril-client-sap.cpp new file mode 100755 index 0000000..33f6851 --- /dev/null +++ b/exynos4/ril/libsecril-client-sap/secril-client-sap.cpp @@ -0,0 +1,855 @@ +/* + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#define LOG_TAG "SapClient" + +#include <binder/Parcel.h> +#include <telephony/ril.h> +#include <cutils/record_stream.h> + +#include <unistd.h> +#include <errno.h> +#include <cutils/sockets.h> +#include <netinet/in.h> +#include <sys/types.h> +#include <string.h> +#include <fcntl.h> +#include <utils/Log.h> +#include <pthread.h> +#include "secril-client-sap.h" +#include <hardware_legacy/power.h> // For wakelock + +#define RIL_CLIENT_WAKE_LOCK "client-sap-interface" + +namespace android { + +//--------------------------------------------------------------------------- +// Defines +//--------------------------------------------------------------------------- +#define DBG 0 + +#define MULTI_CLIENT_SOCKET_NAME "Multiclient" + +#define MAX_COMMAND_BYTES (8 * 1024) +#define REQ_POOL_SIZE 32 +#define TOKEN_POOL_SIZE 32 + +// Constants for response types +#define RESPONSE_SOLICITED 0 +#define RESPONSE_UNSOLICITED 1 + +#define max(a, b) ((a) > (b) ? (a) : (b)) + +#define REQ_OEM_HOOK_RAW RIL_REQUEST_OEM_HOOK_RAW + +//--------------------------------------------------------------------------- +// Type definitions +//--------------------------------------------------------------------------- +typedef struct _ReqHistory { + int token; // token used for request + uint32_t id; // request ID +} ReqHistory; + +typedef struct _ReqRespHandler { + uint32_t id; // request ID + RilOnComplete handler; // handler function +} ReqRespHandler; + +typedef struct _UnsolHandler { + uint32_t id; // unsolicited response ID + RilOnUnsolicited handler; // handler function +} UnsolHandler; + +typedef struct _RilClientPrv { + HRilClient parent; + uint8_t b_connect; // connected to server? + int sock; // socket + int pipefd[2]; + fd_set sock_rfds; // for read with select() + RecordStream *p_rs; + uint32_t token_pool; // each bit in token_pool used for token. + // so, pool size is 32. + pthread_t tid_reader; // socket reader thread id + ReqHistory history[TOKEN_POOL_SIZE]; // request history + ReqRespHandler req_handlers[REQ_POOL_SIZE]; // request response handler list + UnsolHandler unsol_handlers[REQ_POOL_SIZE]; // unsolicited response handler list + RilOnError err_cb; // error callback + void *err_cb_data; // error callback data + uint8_t b_del_handler; +} RilClientPrv; + + +//--------------------------------------------------------------------------- +// Local static function prototypes +//--------------------------------------------------------------------------- +static void * RxReaderFunc(void *param); +static int processRxBuffer(RilClientPrv *prv, void *buffer, size_t buflen); +static uint32_t AllocateToken(uint32_t *token_pool); +static void FreeToken(uint32_t *token_pool, uint32_t token); +static uint8_t IsValidToken(uint32_t *token_pool, uint32_t token); +static int blockingWrite(int fd, const void *buffer, size_t len); +static int RecordReqHistory(RilClientPrv *prv, int token, uint32_t id); +static void ClearReqHistory(RilClientPrv *prv, int token); +static RilOnComplete FindReqHandler(RilClientPrv *prv, int token, uint32_t *id); +static RilOnUnsolicited FindUnsolHandler(RilClientPrv *prv, uint32_t id); +static int SendOemRequestHookRaw(HRilClient client, int req_id, char *data, size_t len); + +/** + * @fn int RegisterUnsolicitedHandler(HRilClient client, uint32_t id, RilOnUnsolicited handler) + * + * @params client: Client handle. + * id: Unsolicited response ID to which handler is registered. + * handler: Unsolicited handler. NULL for deregistration. + * + * @return 0 on success or error code. + */ +extern "C" +int RegisterUnsolicitedHandler(HRilClient client, uint32_t id, RilOnUnsolicited handler) { + RilClientPrv *client_prv; + int match_slot = -1; + int first_empty_slot = -1; + int i; + + if (client == NULL || client->prv == NULL) + return RIL_CLIENT_ERR_INVAL; + + client_prv = (RilClientPrv *)(client->prv); + + for (i = 0; i < REQ_POOL_SIZE; i++) { + // Check if there is matched handler. + if (id == client_prv->unsol_handlers[i].id) { + match_slot = i; + } + // Find first empty handler slot. + if (first_empty_slot == -1 && client_prv->unsol_handlers[i].id == 0) { + first_empty_slot = i; + } + } + + if (handler == NULL) { // Unregister. + if (match_slot >= 0) { + memset(&(client_prv->unsol_handlers[match_slot]), 0, sizeof(UnsolHandler)); + return RIL_CLIENT_ERR_SUCCESS; + } + else { + return RIL_CLIENT_ERR_SUCCESS; + } + } + else {// Register. + if (match_slot >= 0) { + client_prv->unsol_handlers[match_slot].handler = handler; // Just update. + } + else if (first_empty_slot >= 0) { + client_prv->unsol_handlers[first_empty_slot].id = id; + client_prv->unsol_handlers[first_empty_slot].handler = handler; + } + else { + return RIL_CLIENT_ERR_RESOURCE; + } + } + + return RIL_CLIENT_ERR_SUCCESS; +} + + +/** + * @fn int RegisterRequestCompleteHandler(HRilClient client, uint32_t id, RilOnComplete handler) + * + * @params client: Client handle. + * id: Request ID to which handler is registered. + * handler: Request complete handler. NULL for deregistration. + * + * @return 0 on success or error code. + */ +extern "C" +int RegisterRequestCompleteHandler(HRilClient client, uint32_t id, RilOnComplete handler) { + RilClientPrv *client_prv; + int match_slot = -1; + int first_empty_slot = -1; + int i; + + if (client == NULL || client->prv == NULL) + return RIL_CLIENT_ERR_INVAL; + + client_prv = (RilClientPrv *)(client->prv); + + for (i = 0; i < REQ_POOL_SIZE; i++) { + // Check if there is matched handler. + if (id == client_prv->req_handlers[i].id) { + match_slot = i; + } + // Find first empty handler slot. + if (first_empty_slot == -1 && client_prv->req_handlers[i].id == 0) { + first_empty_slot = i; + } + } + + if (handler == NULL) { // Unregister. + if (match_slot >= 0) { + memset(&(client_prv->req_handlers[match_slot]), 0, sizeof(ReqRespHandler)); + return RIL_CLIENT_ERR_SUCCESS; + } + else { + return RIL_CLIENT_ERR_SUCCESS; + } + } + else { // Register. + if (match_slot >= 0) { + client_prv->req_handlers[match_slot].handler = handler; // Just update. + } + else if (first_empty_slot >= 0) { + client_prv->req_handlers[first_empty_slot].id = id; + client_prv->req_handlers[first_empty_slot].handler = handler; + } + else { + return RIL_CLIENT_ERR_RESOURCE; + } + } + + return RIL_CLIENT_ERR_SUCCESS; +} + + +/** + * @fn int RegisterErrorCallback(HRilClient client, RilOnError cb, void *data) + * + * @params client: Client handle. + * cb: Error callback. NULL for unregistration. + * data: Callback data. + * + * @return 0 for success or error code. + */ +extern "C" +int RegisterErrorCallback(HRilClient client, RilOnError cb, void *data) { + RilClientPrv *client_prv; + + if (client == NULL || client->prv == NULL) + return RIL_CLIENT_ERR_INVAL; + + client_prv = (RilClientPrv *)(client->prv); + + client_prv->err_cb = cb; + client_prv->err_cb_data = data; + + return RIL_CLIENT_ERR_SUCCESS; +} + + +/** + * @fn HRilClient OpenClient_RILD(void) + * + * @params None. + * + * @return Client handle, NULL on error. + */ +extern "C" +HRilClient OpenClient_RILD(void) { + HRilClient client = (HRilClient)malloc(sizeof(struct RilClient)); + if (client == NULL) + return NULL; + + client->prv = (RilClientPrv *)malloc(sizeof(RilClientPrv)); + if (client->prv == NULL) { + free(client); + return NULL; + } + + memset(client->prv, 0, sizeof(RilClientPrv)); + + ((RilClientPrv *)(client->prv))->parent = client; + ((RilClientPrv *)(client->prv))->sock = -1; + + return client; +} + + +/** + * @fn int Connect_RILD(void) + * + * @params client: Client handle. + * + * @return 0, or error code. + */ +extern "C" +int Connect_RILD(HRilClient client) { + RilClientPrv *client_prv; + + if (client == NULL || client->prv == NULL) { + ALOGE("%s: Invalid client %p", __FUNCTION__, client); + return RIL_CLIENT_ERR_INVAL; + } + + client_prv = (RilClientPrv *)(client->prv); + + // Open client socket and connect to server. + client_prv->sock = socket_local_client(MULTI_CLIENT_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM ); + + if (client_prv->sock < 0) { + ALOGE("%s: Connecting failed. %s(%d)", __FUNCTION__, strerror(errno), errno); + return RIL_CLIENT_ERR_CONNECT; + } + + client_prv->b_connect = 1; + + if (fcntl(client_prv->sock, F_SETFL, O_NONBLOCK) < 0) { + close(client_prv->sock); + return RIL_CLIENT_ERR_IO; + } + + client_prv->p_rs = record_stream_new(client_prv->sock, MAX_COMMAND_BYTES); + + if (pipe(client_prv->pipefd) < 0) { + close(client_prv->sock); + ALOGE("%s: Creating command pipe failed. %s(%d)", __FUNCTION__, strerror(errno), errno); + return RIL_CLIENT_ERR_IO; + } + + if (fcntl(client_prv->pipefd[0], F_SETFL, O_NONBLOCK) < 0) { + close(client_prv->sock); + close(client_prv->pipefd[0]); + close(client_prv->pipefd[1]); + return RIL_CLIENT_ERR_IO; + } + + // Start socket read thread. + if (pthread_create(&(client_prv->tid_reader), NULL, RxReaderFunc, (void *)client_prv) != 0) { + close(client_prv->sock); + close(client_prv->pipefd[0]); + close(client_prv->pipefd[1]); + + memset(client_prv, 0, sizeof(RilClientPrv)); + client_prv->sock = -1; + ALOGE("%s: Can't create Reader thread. %s(%d)", __FUNCTION__, strerror(errno), errno); + return RIL_CLIENT_ERR_CONNECT; + } + + return RIL_CLIENT_ERR_SUCCESS; +} + +/** + * @fn int Disconnect_RILD(HRilClient client) + * + * @params client: Client handle. + * + * @return 0 on success, or error code. + */ +extern "C" +int Disconnect_RILD(HRilClient client) { + RilClientPrv *client_prv; + int ret = 0; + + if (client == NULL || client->prv == NULL) { + ALOGE("%s: invalid client %p", __FUNCTION__, client); + return RIL_CLIENT_ERR_INVAL; + } + + client_prv = (RilClientPrv *)(client->prv); + + if (client_prv->sock == -1) + return RIL_CLIENT_ERR_SUCCESS; + + ALOGD("[*] %s(): sock=%d\n", __FUNCTION__, client_prv->sock); + + if (client_prv->sock > 0) { + do { + ret = write(client_prv->pipefd[1], "close", strlen("close")); + } while (ret < 0 && errno == EINTR); + } + + client_prv->b_connect = 0; + + pthread_join(client_prv->tid_reader, NULL); + + return RIL_CLIENT_ERR_SUCCESS; +} + + +/** + * @fn int CloseClient_RILD(HRilClient client) + * + * @params client: Client handle. + * + * @return 0 on success, or error code. + */ +extern "C" +int CloseClient_RILD(HRilClient client) { + if (client == NULL || client->prv == NULL) { + ALOGE("%s: invalid client %p", __FUNCTION__, client); + return RIL_CLIENT_ERR_INVAL; + } + + Disconnect_RILD(client); + + free(client->prv); + free(client); + + return RIL_CLIENT_ERR_SUCCESS; +} + +/** + * @fn int InvokeOemRequestHookRaw(HRilClient client, char *data, size_t len) + * + * @params client: Client handle. + * data: Request data. + * len: Request data length. + * + * @return 0 for success or error code. On receiving RIL_CLIENT_ERR_AGAIN, + * caller should retry. + */ +extern "C" +int InvokeOemRequestHookRaw(HRilClient client, char *data, size_t len) { + RilClientPrv *client_prv; + + if (client == NULL || client->prv == NULL) { + ALOGE("%s: Invalid client %p", __FUNCTION__, client); + return RIL_CLIENT_ERR_INVAL; + } + + client_prv = (RilClientPrv *)(client->prv); + + if (client_prv->sock < 0 ) { + ALOGE("%s: Not connected.", __FUNCTION__); + return RIL_CLIENT_ERR_CONNECT; + } + + return SendOemRequestHookRaw(client, REQ_OEM_HOOK_RAW, data, len); +} + + +static int SendOemRequestHookRaw(HRilClient client, int req_id, char *data, size_t len) { + int token = 0; + int ret = 0; + uint32_t header = 0; + android::Parcel p; + RilClientPrv *client_prv; + int maxfd = -1; + + client_prv = (RilClientPrv *)(client->prv); + + // Allocate a token. + token = AllocateToken(&(client_prv->token_pool)); + if (token == 0) { + ALOGE("%s: No token.", __FUNCTION__); + return RIL_CLIENT_ERR_AGAIN; + } + + // Record token for the request sent. + if (RecordReqHistory(client_prv, token, req_id) != RIL_CLIENT_ERR_SUCCESS) { + goto error; + } + + // Make OEM request data. + p.writeInt32(RIL_REQUEST_OEM_HOOK_RAW); + p.writeInt32(token); + p.writeInt32(len); + p.write((void *)data, len); + + // DO TX: header(size). + header = htonl(p.dataSize()); + + if (DBG) ALOGD("%s(): token = %d\n", __FUNCTION__, token); + + ret = blockingWrite(client_prv->sock, (void *)&header, sizeof(header)); + if (ret < 0) { + ALOGE("%s: send request header failed. (%d)", __FUNCTION__, ret); + goto error; + } + + // Do TX: response data. + ret = blockingWrite(client_prv->sock, p.data(), p.dataSize()); + if (ret < 0) { + ALOGE("%s: send request data failed. (%d)", __FUNCTION__, ret); + goto error; + } + + return RIL_CLIENT_ERR_SUCCESS; + +error: + FreeToken(&(client_prv->token_pool), token); + ClearReqHistory(client_prv, token); + + return RIL_CLIENT_ERR_UNKNOWN; +} + +static void * RxReaderFunc(void *param) { + RilClientPrv *client_prv = (RilClientPrv *)param; + int maxfd = 0; + int token = 0; + void *p_record = NULL; + size_t recordlen = 0; + int ret = 0; + int n; + + if (client_prv == NULL) + return NULL; + + maxfd = max(client_prv->sock, client_prv->pipefd[0]) + 1; + + ALOGD("[*] %s() b_connect=%d, maxfd=%d\n", __FUNCTION__, client_prv->b_connect, maxfd); + while (client_prv->b_connect) { + FD_ZERO(&(client_prv->sock_rfds)); + + FD_SET(client_prv->sock, &(client_prv->sock_rfds)); + FD_SET(client_prv->pipefd[0], &(client_prv->sock_rfds)); + + if (DBG) ALOGD("[*] %s() b_connect=%d\n", __FUNCTION__, client_prv->b_connect); + if (select(maxfd, &(client_prv->sock_rfds), NULL, NULL, NULL) > 0) { + if (FD_ISSET(client_prv->sock, &(client_prv->sock_rfds))) { + // Read incoming data + for (;;) { + // loop until EAGAIN/EINTR, end of stream, or other error + ret = record_stream_get_next(client_prv->p_rs, &p_record, &recordlen); + if (ret == 0 && p_record == NULL) { // end-of-stream + break; + } + else if (ret < 0) { + break; + } + else if (ret == 0) { // && p_record != NULL + n = processRxBuffer(client_prv, p_record, recordlen); + if (n != RIL_CLIENT_ERR_SUCCESS) { + ALOGE("%s: processRXBuffer returns %d", __FUNCTION__, n); + } + } + else { + ALOGD("[*] %s()\n", __FUNCTION__); + } + } + + if (ret == 0 || !(errno == EAGAIN || errno == EINTR)) { + // fatal error or end-of-stream + if (client_prv->sock > 0) { + close(client_prv->sock); + client_prv->sock = -1; + client_prv->b_connect = 0; + } + + if (client_prv->p_rs) + record_stream_free(client_prv->p_rs); + + // EOS + if (client_prv->err_cb) { + client_prv->err_cb(client_prv->err_cb_data, RIL_CLIENT_ERR_CONNECT); + return NULL; + } + + break; + } + } + if (FD_ISSET(client_prv->pipefd[0], &(client_prv->sock_rfds))) { + char end_cmd[10]; + + if (DBG) ALOGD("%s(): close\n", __FUNCTION__); + + if (read(client_prv->pipefd[0], end_cmd, sizeof(end_cmd)) > 0) { + close(client_prv->sock); + close(client_prv->pipefd[0]); + close(client_prv->pipefd[1]); + + client_prv->sock = -1; + client_prv->b_connect = 0; + } + } + } + } + + return NULL; +} + + +static int processUnsolicited(RilClientPrv *prv, Parcel &p) { + int32_t resp_id, len; + status_t status; + const void *data = NULL; + RilOnUnsolicited unsol_func = NULL; + + status = p.readInt32(&resp_id); + if (status != NO_ERROR) { + ALOGE("%s: read resp_id failed.", __FUNCTION__); + return RIL_CLIENT_ERR_IO; + } + + status = p.readInt32(&len); + if (status != NO_ERROR) { + //LOGE("%s: read length failed. assume zero length.", __FUNCTION__); + len = 0; + } + + ALOGD("%s(): resp_id (%d), len(%d)\n", __FUNCTION__, resp_id, len); + + if (len) + data = p.readInplace(len); + + // Find unsolicited response handler. + unsol_func = FindUnsolHandler(prv, (uint32_t)resp_id); + if (unsol_func) { + unsol_func(prv->parent, data, len); + } + + return RIL_CLIENT_ERR_SUCCESS; +} + + +static int processSolicited(RilClientPrv *prv, Parcel &p) { + int32_t token, err, len; + status_t status; + const void *data = NULL; + RilOnComplete req_func = NULL; + int ret = RIL_CLIENT_ERR_SUCCESS; + uint32_t req_id = 0; + + if (DBG) ALOGD("%s()", __FUNCTION__); + + status = p.readInt32(&token); + if (status != NO_ERROR) { + ALOGE("%s: Read token fail. Status %d\n", __FUNCTION__, status); + return RIL_CLIENT_ERR_IO; + } + + if (IsValidToken(&(prv->token_pool), token) == 0) { + ALOGE("%s: Invalid Token", __FUNCTION__); + return RIL_CLIENT_ERR_INVAL; // Invalid token. + } + + status = p.readInt32(&err); + if (status != NO_ERROR) { + ALOGE("%s: Read err fail. Status %d\n", __FUNCTION__, status); + ret = RIL_CLIENT_ERR_IO; + goto error; + } + + // Don't go further for error response. + if (err != RIL_CLIENT_ERR_SUCCESS) { + ALOGE("%s: Error %d\n", __FUNCTION__, err); + if (prv->err_cb) + prv->err_cb(prv->err_cb_data, err); + ret = RIL_CLIENT_ERR_SUCCESS; + goto error; + } + + status = p.readInt32(&len); + if (status != NO_ERROR) { + /* no length field */ + len = 0; + } + + if (len) + data = p.readInplace(len); + + // Find request handler for the token. + // First, FindReqHandler() searches request history with the token + // and finds out a request ID. Then, it search request handler table + // with the request ID. + req_func = FindReqHandler(prv, token, &req_id); + if (req_func) + { + if (DBG) ALOGD("[*] Call handler"); + req_func(prv->parent, data, len); + + if(prv->b_del_handler) { + prv->b_del_handler = 0; + RegisterRequestCompleteHandler(prv->parent, req_id, NULL); + } + } else { + if (DBG) ALOGD("%s: No handler for token %d\n", __FUNCTION__, token); + } + +error: + FreeToken(&(prv->token_pool), token); + ClearReqHistory(prv, token); + return ret; +} + + +static int processRxBuffer(RilClientPrv *prv, void *buffer, size_t buflen) { + Parcel p; + int32_t response_type; + status_t status; + int ret = RIL_CLIENT_ERR_SUCCESS; + + acquire_wake_lock(PARTIAL_WAKE_LOCK, RIL_CLIENT_WAKE_LOCK); + + p.setData((uint8_t *)buffer, buflen); + + status = p.readInt32(&response_type); + if (DBG) ALOGD("%s: status %d response_type %d", __FUNCTION__, status, response_type); + + if (status != NO_ERROR) { + ret = RIL_CLIENT_ERR_IO; + goto EXIT; + } + + // FOr unsolicited response. + if (response_type == RESPONSE_UNSOLICITED) { + ret = processUnsolicited(prv, p); + } + // For solicited response. + else if (response_type == RESPONSE_SOLICITED) { + ret = processSolicited(prv, p); + if (ret != RIL_CLIENT_ERR_SUCCESS && prv->err_cb) { + prv->err_cb(prv->err_cb_data, ret); + } + } + else { + ret = RIL_CLIENT_ERR_INVAL; + } + +EXIT: + release_wake_lock(RIL_CLIENT_WAKE_LOCK); + return ret; +} + + +static uint32_t AllocateToken(uint32_t *token_pool) { + int i; + + // Token pool is full. + if (*token_pool == 0xFFFFFFFF) + return 0; + + for (i = 0; i < 32; i++) { + uint32_t new_token = 0x00000001 << i; + + if ((*token_pool & new_token) == 0) { + *token_pool |= new_token; + return new_token; + } + } + + return 0; +} + + +static void FreeToken(uint32_t *token_pool, uint32_t token) { + *token_pool &= ~token; +} + + +static uint8_t IsValidToken(uint32_t *token_pool, uint32_t token) { + if (token == 0) + return 0; + + if ((*token_pool & token) == token) + return 1; + else + return 0; +} + + +static int RecordReqHistory(RilClientPrv *prv, int token, uint32_t id) { + int i = 0; + + if (DBG) ALOGD("[*] %s(): token(%d), ID(%d)\n", __FUNCTION__, token, id); + for (i = 0; i < TOKEN_POOL_SIZE; i++) { + if (prv->history[i].token == 0) { + prv->history[i].token = token; + prv->history[i].id = id; + + if (DBG) ALOGD("[*] %s(): token(%d), ID(%d)\n", __FUNCTION__, token, id); + + return RIL_CLIENT_ERR_SUCCESS; + } + } + + ALOGE("%s: No free record for token %d", __FUNCTION__, token); + + return RIL_CLIENT_ERR_RESOURCE; +} + +static void ClearReqHistory(RilClientPrv *prv, int token) { + int i = 0; + + if (DBG) ALOGD("[*] %s(): token(%d)\n", __FUNCTION__, token); + for (i = 0; i < TOKEN_POOL_SIZE; i++) { + if (prv->history[i].token == token) { + memset(&(prv->history[i]), 0, sizeof(ReqHistory)); + break; + } + } +} + + +static RilOnUnsolicited FindUnsolHandler(RilClientPrv *prv, uint32_t id) { + int i; + + // Search unsolicited handler table. + for (i = 0; i < REQ_POOL_SIZE; i++) { + if (prv->unsol_handlers[i].id == id) + return prv->unsol_handlers[i].handler; + } + + return (RilOnUnsolicited)NULL; +} + + +static RilOnComplete FindReqHandler(RilClientPrv *prv, int token, uint32_t *id) { + int i = 0; + int j = 0; + + if (DBG) ALOGD("[*] %s(): token(%d)\n", __FUNCTION__, token); + + // Search request history. + for (i = 0; i < TOKEN_POOL_SIZE; i++) { + ALOGD("[*] %s(): history_token(%d)\n", __FUNCTION__, prv->history[i].token); + if (prv->history[i].token == token) { + // Search request handler with request ID found. + for (j = 0; j < REQ_POOL_SIZE; j++) { + ALOGD("[*] %s(): token(%d), req_id(%d), history_id(%d)\n", __FUNCTION__, token, prv->history[i].id, prv->history[i].id); + if (prv->req_handlers[j].id == prv->history[i].id) { + *id = prv->req_handlers[j].id; + return prv->req_handlers[j].handler; + } + } + } + } + + return NULL; +} + + +static int blockingWrite(int fd, const void *buffer, size_t len) { + size_t writeOffset = 0; + const uint8_t *toWrite; + ssize_t written = 0; + + if (buffer == NULL) + return -1; + + toWrite = (const uint8_t *)buffer; + + while (writeOffset < len) { + do + { + written = write(fd, toWrite + writeOffset, len - writeOffset); + } while (written < 0 && errno == EINTR); + + if (written >= 0) { + writeOffset += written; + } + else { + ALOGE ("RIL Response: unexpected error on write errno:%d", errno); + close(fd); + return -1; + } + } + + return 0; +} + +} // namespace android + +// end of file + |