8ad1778b50
R=bmeurer@chromium.org Review URL: https://codereview.chromium.org/1289553002 Cr-Commit-Position: refs/heads/master@{#30126}
792 lines
26 KiB
C++
792 lines
26 KiB
C++
// Copyright 2009 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include "src/d8.h"
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#if !V8_OS_NACL
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#include <sys/select.h>
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#endif
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namespace v8 {
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// If the buffer ends in the middle of a UTF-8 sequence then we return
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// the length of the string up to but not including the incomplete UTF-8
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// sequence. If the buffer ends with a valid UTF-8 sequence then we
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// return the whole buffer.
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static int LengthWithoutIncompleteUtf8(char* buffer, int len) {
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int answer = len;
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// 1-byte encoding.
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static const int kUtf8SingleByteMask = 0x80;
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static const int kUtf8SingleByteValue = 0x00;
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// 2-byte encoding.
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static const int kUtf8TwoByteMask = 0xe0;
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static const int kUtf8TwoByteValue = 0xc0;
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// 3-byte encoding.
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static const int kUtf8ThreeByteMask = 0xf0;
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static const int kUtf8ThreeByteValue = 0xe0;
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// 4-byte encoding.
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static const int kUtf8FourByteMask = 0xf8;
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static const int kUtf8FourByteValue = 0xf0;
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// Subsequent bytes of a multi-byte encoding.
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static const int kMultiByteMask = 0xc0;
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static const int kMultiByteValue = 0x80;
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int multi_byte_bytes_seen = 0;
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while (answer > 0) {
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int c = buffer[answer - 1];
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// Ends in valid single-byte sequence?
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if ((c & kUtf8SingleByteMask) == kUtf8SingleByteValue) return answer;
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// Ends in one or more subsequent bytes of a multi-byte value?
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if ((c & kMultiByteMask) == kMultiByteValue) {
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multi_byte_bytes_seen++;
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answer--;
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} else {
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if ((c & kUtf8TwoByteMask) == kUtf8TwoByteValue) {
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if (multi_byte_bytes_seen >= 1) {
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return answer + 2;
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}
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return answer - 1;
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} else if ((c & kUtf8ThreeByteMask) == kUtf8ThreeByteValue) {
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if (multi_byte_bytes_seen >= 2) {
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return answer + 3;
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}
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return answer - 1;
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} else if ((c & kUtf8FourByteMask) == kUtf8FourByteValue) {
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if (multi_byte_bytes_seen >= 3) {
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return answer + 4;
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}
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return answer - 1;
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} else {
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return answer; // Malformed UTF-8.
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}
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}
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}
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return 0;
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}
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// Suspends the thread until there is data available from the child process.
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// Returns false on timeout, true on data ready.
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static bool WaitOnFD(int fd,
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int read_timeout,
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int total_timeout,
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const struct timeval& start_time) {
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fd_set readfds, writefds, exceptfds;
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struct timeval timeout;
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int gone = 0;
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if (total_timeout != -1) {
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struct timeval time_now;
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gettimeofday(&time_now, NULL);
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time_t seconds = time_now.tv_sec - start_time.tv_sec;
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gone = static_cast<int>(seconds * 1000 +
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(time_now.tv_usec - start_time.tv_usec) / 1000);
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if (gone >= total_timeout) return false;
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}
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FD_ZERO(&readfds);
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FD_ZERO(&writefds);
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FD_ZERO(&exceptfds);
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FD_SET(fd, &readfds);
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FD_SET(fd, &exceptfds);
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if (read_timeout == -1 ||
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(total_timeout != -1 && total_timeout - gone < read_timeout)) {
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read_timeout = total_timeout - gone;
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}
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timeout.tv_usec = (read_timeout % 1000) * 1000;
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timeout.tv_sec = read_timeout / 1000;
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#if V8_OS_NACL
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// PNaCL has no support for select.
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int number_of_fds_ready = -1;
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#else
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int number_of_fds_ready = select(fd + 1,
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&readfds,
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&writefds,
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&exceptfds,
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read_timeout != -1 ? &timeout : NULL);
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#endif
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return number_of_fds_ready == 1;
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}
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// Checks whether we ran out of time on the timeout. Returns true if we ran out
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// of time, false if we still have time.
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static bool TimeIsOut(const struct timeval& start_time, const int& total_time) {
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if (total_time == -1) return false;
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struct timeval time_now;
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gettimeofday(&time_now, NULL);
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// Careful about overflow.
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int seconds = static_cast<int>(time_now.tv_sec - start_time.tv_sec);
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if (seconds > 100) {
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if (seconds * 1000 > total_time) return true;
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return false;
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}
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int useconds = static_cast<int>(time_now.tv_usec - start_time.tv_usec);
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if (seconds * 1000000 + useconds > total_time * 1000) {
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return true;
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}
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return false;
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}
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// A utility class that does a non-hanging waitpid on the child process if we
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// bail out of the System() function early. If you don't ever do a waitpid on
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// a subprocess then it turns into one of those annoying 'zombie processes'.
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class ZombieProtector {
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public:
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explicit ZombieProtector(int pid): pid_(pid) { }
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~ZombieProtector() { if (pid_ != 0) waitpid(pid_, NULL, 0); }
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void ChildIsDeadNow() { pid_ = 0; }
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private:
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int pid_;
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};
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// A utility class that closes a file descriptor when it goes out of scope.
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class OpenFDCloser {
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public:
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explicit OpenFDCloser(int fd): fd_(fd) { }
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~OpenFDCloser() { close(fd_); }
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private:
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int fd_;
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};
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// A utility class that takes the array of command arguments and puts then in an
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// array of new[]ed UTF-8 C strings. Deallocates them again when it goes out of
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// scope.
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class ExecArgs {
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public:
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ExecArgs() {
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exec_args_[0] = NULL;
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}
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bool Init(Isolate* isolate, Local<Value> arg0, Local<Array> command_args) {
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String::Utf8Value prog(arg0);
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if (*prog == NULL) {
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const char* message =
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"os.system(): String conversion of program name failed";
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isolate->ThrowException(
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String::NewFromUtf8(isolate, message, NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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int len = prog.length() + 3;
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char* c_arg = new char[len];
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snprintf(c_arg, len, "%s", *prog);
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exec_args_[0] = c_arg;
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int i = 1;
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for (unsigned j = 0; j < command_args->Length(); i++, j++) {
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Local<Value> arg(
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command_args->Get(isolate->GetCurrentContext(),
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Integer::New(isolate, j)).ToLocalChecked());
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String::Utf8Value utf8_arg(arg);
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if (*utf8_arg == NULL) {
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exec_args_[i] = NULL; // Consistent state for destructor.
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const char* message =
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"os.system(): String conversion of argument failed.";
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isolate->ThrowException(
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String::NewFromUtf8(isolate, message, NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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int len = utf8_arg.length() + 1;
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char* c_arg = new char[len];
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snprintf(c_arg, len, "%s", *utf8_arg);
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exec_args_[i] = c_arg;
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}
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exec_args_[i] = NULL;
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return true;
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}
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~ExecArgs() {
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for (unsigned i = 0; i < kMaxArgs; i++) {
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if (exec_args_[i] == NULL) {
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return;
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}
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delete [] exec_args_[i];
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exec_args_[i] = 0;
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}
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}
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static const unsigned kMaxArgs = 1000;
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char* const* arg_array() const { return exec_args_; }
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const char* arg0() const { return exec_args_[0]; }
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private:
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char* exec_args_[kMaxArgs + 1];
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};
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// Gets the optional timeouts from the arguments to the system() call.
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static bool GetTimeouts(const v8::FunctionCallbackInfo<v8::Value>& args,
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int* read_timeout,
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int* total_timeout) {
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if (args.Length() > 3) {
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if (args[3]->IsNumber()) {
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*total_timeout = args[3]
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->Int32Value(args.GetIsolate()->GetCurrentContext())
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.FromJust();
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} else {
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args.GetIsolate()->ThrowException(
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String::NewFromUtf8(args.GetIsolate(),
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"system: Argument 4 must be a number",
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NewStringType::kNormal).ToLocalChecked());
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return false;
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}
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}
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if (args.Length() > 2) {
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if (args[2]->IsNumber()) {
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*read_timeout = args[2]
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->Int32Value(args.GetIsolate()->GetCurrentContext())
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.FromJust();
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} else {
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args.GetIsolate()->ThrowException(
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String::NewFromUtf8(args.GetIsolate(),
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"system: Argument 3 must be a number",
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NewStringType::kNormal).ToLocalChecked());
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return false;
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}
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}
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return true;
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}
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static const int kReadFD = 0;
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static const int kWriteFD = 1;
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// This is run in the child process after fork() but before exec(). It normally
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// ends with the child process being replaced with the desired child program.
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// It only returns if an error occurred.
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static void ExecSubprocess(int* exec_error_fds,
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int* stdout_fds,
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const ExecArgs& exec_args) {
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close(exec_error_fds[kReadFD]); // Don't need this in the child.
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close(stdout_fds[kReadFD]); // Don't need this in the child.
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close(1); // Close stdout.
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dup2(stdout_fds[kWriteFD], 1); // Dup pipe fd to stdout.
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close(stdout_fds[kWriteFD]); // Don't need the original fd now.
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fcntl(exec_error_fds[kWriteFD], F_SETFD, FD_CLOEXEC);
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execvp(exec_args.arg0(), exec_args.arg_array());
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// Only get here if the exec failed. Write errno to the parent to tell
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// them it went wrong. If it went well the pipe is closed.
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int err = errno;
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ssize_t bytes_written;
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do {
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bytes_written = write(exec_error_fds[kWriteFD], &err, sizeof(err));
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} while (bytes_written == -1 && errno == EINTR);
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// Return (and exit child process).
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}
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// Runs in the parent process. Checks that the child was able to exec (closing
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// the file desriptor), or reports an error if it failed.
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static bool ChildLaunchedOK(Isolate* isolate, int* exec_error_fds) {
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ssize_t bytes_read;
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int err;
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do {
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bytes_read = read(exec_error_fds[kReadFD], &err, sizeof(err));
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} while (bytes_read == -1 && errno == EINTR);
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if (bytes_read != 0) {
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isolate->ThrowException(
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String::NewFromUtf8(isolate, strerror(err), NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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return true;
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}
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// Accumulates the output from the child in a string handle. Returns true if it
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// succeeded or false if an exception was thrown.
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static Local<Value> GetStdout(Isolate* isolate, int child_fd,
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const struct timeval& start_time,
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int read_timeout, int total_timeout) {
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Local<String> accumulator = String::Empty(isolate);
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int fullness = 0;
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static const int kStdoutReadBufferSize = 4096;
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char buffer[kStdoutReadBufferSize];
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if (fcntl(child_fd, F_SETFL, O_NONBLOCK) != 0) {
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return isolate->ThrowException(
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String::NewFromUtf8(isolate, strerror(errno), NewStringType::kNormal)
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.ToLocalChecked());
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}
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int bytes_read;
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do {
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bytes_read = static_cast<int>(
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read(child_fd, buffer + fullness, kStdoutReadBufferSize - fullness));
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if (bytes_read == -1) {
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if (errno == EAGAIN) {
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if (!WaitOnFD(child_fd,
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read_timeout,
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total_timeout,
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start_time) ||
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(TimeIsOut(start_time, total_timeout))) {
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return isolate->ThrowException(
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String::NewFromUtf8(isolate, "Timed out waiting for output",
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NewStringType::kNormal).ToLocalChecked());
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}
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continue;
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} else if (errno == EINTR) {
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continue;
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} else {
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break;
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}
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}
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if (bytes_read + fullness > 0) {
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int length = bytes_read == 0 ?
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bytes_read + fullness :
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LengthWithoutIncompleteUtf8(buffer, bytes_read + fullness);
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Local<String> addition =
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String::NewFromUtf8(isolate, buffer, NewStringType::kNormal, length)
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.ToLocalChecked();
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accumulator = String::Concat(accumulator, addition);
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fullness = bytes_read + fullness - length;
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memcpy(buffer, buffer + length, fullness);
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}
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} while (bytes_read != 0);
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return accumulator;
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}
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// Modern Linux has the waitid call, which is like waitpid, but more useful
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// if you want a timeout. If we don't have waitid we can't limit the time
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// waiting for the process to exit without losing the information about
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// whether it exited normally. In the common case this doesn't matter because
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// we don't get here before the child has closed stdout and most programs don't
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// do that before they exit.
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//
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// We're disabling usage of waitid in Mac OS X because it doens't work for us:
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// a parent process hangs on waiting while a child process is already a zombie.
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// See http://code.google.com/p/v8/issues/detail?id=401.
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#if defined(WNOWAIT) && !defined(ANDROID) && !defined(__APPLE__) \
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&& !defined(__NetBSD__)
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#if !defined(__FreeBSD__)
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#define HAS_WAITID 1
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#endif
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#endif
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// Get exit status of child.
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static bool WaitForChild(Isolate* isolate,
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int pid,
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ZombieProtector& child_waiter, // NOLINT
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const struct timeval& start_time,
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int read_timeout,
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int total_timeout) {
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#ifdef HAS_WAITID
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siginfo_t child_info;
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child_info.si_pid = 0;
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int useconds = 1;
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// Wait for child to exit.
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while (child_info.si_pid == 0) {
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waitid(P_PID, pid, &child_info, WEXITED | WNOHANG | WNOWAIT);
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usleep(useconds);
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if (useconds < 1000000) useconds <<= 1;
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if ((read_timeout != -1 && useconds / 1000 > read_timeout) ||
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(TimeIsOut(start_time, total_timeout))) {
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isolate->ThrowException(
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String::NewFromUtf8(isolate,
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"Timed out waiting for process to terminate",
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NewStringType::kNormal).ToLocalChecked());
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kill(pid, SIGINT);
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return false;
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}
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}
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if (child_info.si_code == CLD_KILLED) {
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char message[999];
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snprintf(message,
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sizeof(message),
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"Child killed by signal %d",
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child_info.si_status);
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isolate->ThrowException(
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String::NewFromUtf8(isolate, message, NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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if (child_info.si_code == CLD_EXITED && child_info.si_status != 0) {
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char message[999];
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snprintf(message,
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sizeof(message),
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"Child exited with status %d",
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child_info.si_status);
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isolate->ThrowException(
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String::NewFromUtf8(isolate, message, NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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#else // No waitid call.
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int child_status;
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waitpid(pid, &child_status, 0); // We hang here if the child doesn't exit.
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child_waiter.ChildIsDeadNow();
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if (WIFSIGNALED(child_status)) {
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char message[999];
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snprintf(message,
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sizeof(message),
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"Child killed by signal %d",
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WTERMSIG(child_status));
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isolate->ThrowException(
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String::NewFromUtf8(isolate, message, NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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if (WEXITSTATUS(child_status) != 0) {
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char message[999];
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int exit_status = WEXITSTATUS(child_status);
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snprintf(message,
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sizeof(message),
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"Child exited with status %d",
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exit_status);
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isolate->ThrowException(
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String::NewFromUtf8(isolate, message, NewStringType::kNormal)
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.ToLocalChecked());
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return false;
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}
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#endif // No waitid call.
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return true;
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}
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// Implementation of the system() function (see d8.h for details).
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void Shell::System(const v8::FunctionCallbackInfo<v8::Value>& args) {
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HandleScope scope(args.GetIsolate());
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int read_timeout = -1;
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int total_timeout = -1;
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if (!GetTimeouts(args, &read_timeout, &total_timeout)) return;
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Local<Array> command_args;
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if (args.Length() > 1) {
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if (!args[1]->IsArray()) {
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args.GetIsolate()->ThrowException(
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String::NewFromUtf8(args.GetIsolate(),
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"system: Argument 2 must be an array",
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NewStringType::kNormal).ToLocalChecked());
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return;
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}
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command_args = Local<Array>::Cast(args[1]);
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} else {
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command_args = Array::New(args.GetIsolate(), 0);
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}
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if (command_args->Length() > ExecArgs::kMaxArgs) {
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args.GetIsolate()->ThrowException(
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String::NewFromUtf8(args.GetIsolate(), "Too many arguments to system()",
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NewStringType::kNormal).ToLocalChecked());
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return;
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}
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if (args.Length() < 1) {
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), "Too few arguments to system()",
|
|
NewStringType::kNormal).ToLocalChecked());
|
|
return;
|
|
}
|
|
|
|
struct timeval start_time;
|
|
gettimeofday(&start_time, NULL);
|
|
|
|
ExecArgs exec_args;
|
|
if (!exec_args.Init(args.GetIsolate(), args[0], command_args)) {
|
|
return;
|
|
}
|
|
int exec_error_fds[2];
|
|
int stdout_fds[2];
|
|
|
|
if (pipe(exec_error_fds) != 0) {
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), "pipe syscall failed.",
|
|
NewStringType::kNormal).ToLocalChecked());
|
|
return;
|
|
}
|
|
if (pipe(stdout_fds) != 0) {
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), "pipe syscall failed.",
|
|
NewStringType::kNormal).ToLocalChecked());
|
|
return;
|
|
}
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) { // Child process.
|
|
ExecSubprocess(exec_error_fds, stdout_fds, exec_args);
|
|
exit(1);
|
|
}
|
|
|
|
// Parent process. Ensure that we clean up if we exit this function early.
|
|
ZombieProtector child_waiter(pid);
|
|
close(exec_error_fds[kWriteFD]);
|
|
close(stdout_fds[kWriteFD]);
|
|
OpenFDCloser error_read_closer(exec_error_fds[kReadFD]);
|
|
OpenFDCloser stdout_read_closer(stdout_fds[kReadFD]);
|
|
|
|
if (!ChildLaunchedOK(args.GetIsolate(), exec_error_fds)) return;
|
|
|
|
Local<Value> accumulator = GetStdout(args.GetIsolate(), stdout_fds[kReadFD],
|
|
start_time, read_timeout, total_timeout);
|
|
if (accumulator->IsUndefined()) {
|
|
kill(pid, SIGINT); // On timeout, kill the subprocess.
|
|
args.GetReturnValue().Set(accumulator);
|
|
return;
|
|
}
|
|
|
|
if (!WaitForChild(args.GetIsolate(),
|
|
pid,
|
|
child_waiter,
|
|
start_time,
|
|
read_timeout,
|
|
total_timeout)) {
|
|
return;
|
|
}
|
|
|
|
args.GetReturnValue().Set(accumulator);
|
|
}
|
|
|
|
|
|
void Shell::ChangeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args) {
|
|
if (args.Length() != 1) {
|
|
const char* message = "chdir() takes one argument";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
String::Utf8Value directory(args[0]);
|
|
if (*directory == NULL) {
|
|
const char* message = "os.chdir(): String conversion of argument failed.";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
if (chdir(*directory) != 0) {
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), strerror(errno),
|
|
NewStringType::kNormal).ToLocalChecked());
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
void Shell::SetUMask(const v8::FunctionCallbackInfo<v8::Value>& args) {
|
|
if (args.Length() != 1) {
|
|
const char* message = "umask() takes one argument";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
if (args[0]->IsNumber()) {
|
|
#if V8_OS_NACL
|
|
// PNaCL has no support for umask.
|
|
int previous = 0;
|
|
#else
|
|
int previous = umask(
|
|
args[0]->Int32Value(args.GetIsolate()->GetCurrentContext()).FromJust());
|
|
#endif
|
|
args.GetReturnValue().Set(previous);
|
|
return;
|
|
} else {
|
|
const char* message = "umask() argument must be numeric";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
static bool CheckItsADirectory(Isolate* isolate, char* directory) {
|
|
struct stat stat_buf;
|
|
int stat_result = stat(directory, &stat_buf);
|
|
if (stat_result != 0) {
|
|
isolate->ThrowException(
|
|
String::NewFromUtf8(isolate, strerror(errno), NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return false;
|
|
}
|
|
if ((stat_buf.st_mode & S_IFDIR) != 0) return true;
|
|
isolate->ThrowException(
|
|
String::NewFromUtf8(isolate, strerror(EEXIST), NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return false;
|
|
}
|
|
|
|
|
|
// Returns true for success. Creates intermediate directories as needed. No
|
|
// error if the directory exists already.
|
|
static bool mkdirp(Isolate* isolate, char* directory, mode_t mask) {
|
|
int result = mkdir(directory, mask);
|
|
if (result == 0) return true;
|
|
if (errno == EEXIST) {
|
|
return CheckItsADirectory(isolate, directory);
|
|
} else if (errno == ENOENT) { // Intermediate path element is missing.
|
|
char* last_slash = strrchr(directory, '/');
|
|
if (last_slash == NULL) {
|
|
isolate->ThrowException(
|
|
String::NewFromUtf8(isolate, strerror(errno), NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return false;
|
|
}
|
|
*last_slash = 0;
|
|
if (!mkdirp(isolate, directory, mask)) return false;
|
|
*last_slash = '/';
|
|
result = mkdir(directory, mask);
|
|
if (result == 0) return true;
|
|
if (errno == EEXIST) {
|
|
return CheckItsADirectory(isolate, directory);
|
|
}
|
|
isolate->ThrowException(
|
|
String::NewFromUtf8(isolate, strerror(errno), NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return false;
|
|
} else {
|
|
isolate->ThrowException(
|
|
String::NewFromUtf8(isolate, strerror(errno), NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
void Shell::MakeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args) {
|
|
mode_t mask = 0777;
|
|
if (args.Length() == 2) {
|
|
if (args[1]->IsNumber()) {
|
|
mask = args[1]
|
|
->Int32Value(args.GetIsolate()->GetCurrentContext())
|
|
.FromJust();
|
|
} else {
|
|
const char* message = "mkdirp() second argument must be numeric";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message,
|
|
NewStringType::kNormal).ToLocalChecked());
|
|
return;
|
|
}
|
|
} else if (args.Length() != 1) {
|
|
const char* message = "mkdirp() takes one or two arguments";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
String::Utf8Value directory(args[0]);
|
|
if (*directory == NULL) {
|
|
const char* message = "os.mkdirp(): String conversion of argument failed.";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
mkdirp(args.GetIsolate(), *directory, mask);
|
|
}
|
|
|
|
|
|
void Shell::RemoveDirectory(const v8::FunctionCallbackInfo<v8::Value>& args) {
|
|
if (args.Length() != 1) {
|
|
const char* message = "rmdir() takes one or two arguments";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
String::Utf8Value directory(args[0]);
|
|
if (*directory == NULL) {
|
|
const char* message = "os.rmdir(): String conversion of argument failed.";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
rmdir(*directory);
|
|
}
|
|
|
|
|
|
void Shell::SetEnvironment(const v8::FunctionCallbackInfo<v8::Value>& args) {
|
|
if (args.Length() != 2) {
|
|
const char* message = "setenv() takes two arguments";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
String::Utf8Value var(args[0]);
|
|
String::Utf8Value value(args[1]);
|
|
if (*var == NULL) {
|
|
const char* message =
|
|
"os.setenv(): String conversion of variable name failed.";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
if (*value == NULL) {
|
|
const char* message =
|
|
"os.setenv(): String conversion of variable contents failed.";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
setenv(*var, *value, 1);
|
|
}
|
|
|
|
|
|
void Shell::UnsetEnvironment(const v8::FunctionCallbackInfo<v8::Value>& args) {
|
|
if (args.Length() != 1) {
|
|
const char* message = "unsetenv() takes one argument";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
String::Utf8Value var(args[0]);
|
|
if (*var == NULL) {
|
|
const char* message =
|
|
"os.setenv(): String conversion of variable name failed.";
|
|
args.GetIsolate()->ThrowException(
|
|
String::NewFromUtf8(args.GetIsolate(), message, NewStringType::kNormal)
|
|
.ToLocalChecked());
|
|
return;
|
|
}
|
|
unsetenv(*var);
|
|
}
|
|
|
|
|
|
void Shell::AddOSMethods(Isolate* isolate, Local<ObjectTemplate> os_templ) {
|
|
os_templ->Set(String::NewFromUtf8(isolate, "system", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, System));
|
|
os_templ->Set(String::NewFromUtf8(isolate, "chdir", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, ChangeDirectory));
|
|
os_templ->Set(String::NewFromUtf8(isolate, "setenv", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, SetEnvironment));
|
|
os_templ->Set(String::NewFromUtf8(isolate, "unsetenv", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, UnsetEnvironment));
|
|
os_templ->Set(String::NewFromUtf8(isolate, "umask", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, SetUMask));
|
|
os_templ->Set(String::NewFromUtf8(isolate, "mkdirp", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, MakeDirectory));
|
|
os_templ->Set(String::NewFromUtf8(isolate, "rmdir", NewStringType::kNormal)
|
|
.ToLocalChecked(),
|
|
FunctionTemplate::New(isolate, RemoveDirectory));
|
|
}
|
|
|
|
} // namespace v8
|