74c332f184
This will fix the endian issue for heterogeneous architectures in keystore marshalling interface.
103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/*
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**
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** Copyright 2009, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#ifndef __NETKEYSTORE_H__
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#define __NETKEYSTORE_H__
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#include <stdio.h>
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#include <arpa/inet.h>
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#include <cutils/sockets.h>
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#include <cutils/log.h>
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#include "common.h"
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static inline int readx(int s, void *_buf, int count)
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{
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char *buf = _buf;
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int n = 0, r;
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if (count < 0) return -1;
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while (n < count) {
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r = read(s, buf + n, count - n);
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if (r < 0) {
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if (errno == EINTR) continue;
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LOGE("read error: %s\n", strerror(errno));
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return -1;
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}
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if (r == 0) {
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LOGE("eof\n");
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return -1; /* EOF */
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}
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n += r;
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}
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return 0;
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}
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static inline int writex(int s, const void *_buf, int count)
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{
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const char *buf = _buf;
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int n = 0, r;
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if (count < 0) return -1;
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while (n < count) {
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r = write(s, buf + n, count - n);
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if (r < 0) {
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if (errno == EINTR) continue;
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LOGE("write error: %s\n", strerror(errno));
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return -1;
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}
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n += r;
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}
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return 0;
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}
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static inline int read_marshal(int s, LPC_MARSHAL *cmd)
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{
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if (readx(s, cmd, 2 * sizeof(uint32_t))) {
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LOGE("failed to read header\n");
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return -1;
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}
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cmd->len = ntohl(cmd->len);
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cmd->opcode = ntohl(cmd->opcode);
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if (cmd->len > BUFFER_MAX) {
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LOGE("invalid size %d\n", cmd->len);
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return -1;
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}
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if (readx(s, cmd->data, cmd->len)) {
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LOGE("failed to read data\n");
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return -1;
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}
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cmd->data[cmd->len] = 0;
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return 0;
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}
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static inline int write_marshal(int s, LPC_MARSHAL *cmd)
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{
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int len = cmd->len;
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cmd->len = htonl(cmd->len);
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cmd->opcode = htonl(cmd->opcode);
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if (writex(s, cmd, 2 * sizeof(uint32_t))) {
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LOGE("failed to write marshal header\n");
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return -1;
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}
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if (writex(s, cmd->data, len)) {
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LOGE("failed to write marshal data\n");
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return -1;
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}
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return 0;
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}
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#endif
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