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/* libs/graphics/ports/SkFontHost_fontconfig_direct.cpp
**
** Copyright 2009, Google Inc.
**
** 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.
*/
// http://code.google.com/p/chromium/wiki/LinuxSandboxIPC
#include "SkFontHost_fontconfig_ipc.h"
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include "base/pickle.h"
#include "base/unix_domain_socket_posix.h"
FontConfigIPC::FontConfigIPC(int fd)
: fd_(fd) {
}
FontConfigIPC::~FontConfigIPC() {
close(fd_);
}
bool FontConfigIPC::Match(std::string* result_family,
unsigned* result_filefaceid,
bool filefaceid_valid, unsigned filefaceid,
const std::string& family,
const void* characters, size_t characters_bytes,
bool* is_bold, bool* is_italic) {
if (family.length() > kMaxFontFamilyLength)
return false;
Pickle request;
request.WriteInt(METHOD_MATCH);
request.WriteBool(filefaceid_valid);
if (filefaceid_valid)
request.WriteUInt32(filefaceid);
request.WriteBool(is_bold && *is_bold);
request.WriteBool(is_bold && *is_italic);
request.WriteUInt32(characters_bytes);
if (characters_bytes)
request.WriteBytes(characters, characters_bytes);
request.WriteString(family);
uint8_t reply_buf[512];
const ssize_t r = base::SendRecvMsg(fd_, reply_buf, sizeof(reply_buf), NULL,
request);
if (r == -1)
return false;
Pickle reply(reinterpret_cast<char*>(reply_buf), r);
void* iter = NULL;
bool result;
if (!reply.ReadBool(&iter, &result))
return false;
if (!result)
return false;
uint32_t reply_filefaceid;
std::string reply_family;
bool resulting_bold, resulting_italic;
if (!reply.ReadUInt32(&iter, &reply_filefaceid) ||
!reply.ReadString(&iter, &reply_family) ||
!reply.ReadBool(&iter, &resulting_bold) ||
!reply.ReadBool(&iter, &resulting_italic)) {
return false;
}
*result_filefaceid = reply_filefaceid;
if (result_family)
*result_family = reply_family;
if (is_bold)
*is_bold = resulting_bold;
if (is_italic)
*is_italic = resulting_italic;
return true;
}
int FontConfigIPC::Open(unsigned filefaceid) {
Pickle request;
request.WriteInt(METHOD_OPEN);
request.WriteUInt32(filefaceid);
int result_fd = -1;
uint8_t reply_buf[256];
const ssize_t r = base::SendRecvMsg(fd_, reply_buf, sizeof(reply_buf),
&result_fd, request);
if (r == -1)
return -1;
Pickle reply(reinterpret_cast<char*>(reply_buf), r);
bool result;
void* iter = NULL;
if (!reply.ReadBool(&iter, &result) ||
!result) {
if (result_fd)
close(result_fd);
return -1;
}
return result_fd;
}
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