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authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-08-13 05:37:52 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-08-13 05:37:52 +0000
commit0a64817fb80016030c03518fb9459f63c11605ea (patch)
tree3ea2e607f9ea08c56830ef7b803cd259e3d67c7f /ext/pty
parent210367ec889f5910e270d6ea2c7ddb8a8d939e61 (diff)
remove marshal/gtk/kconv
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/pty')
-rw-r--r--ext/pty/MANIFEST11
-rw-r--r--ext/pty/README93
-rw-r--r--ext/pty/README.expect22
-rw-r--r--ext/pty/README.expect.jp21
-rw-r--r--ext/pty/README.jp89
-rw-r--r--ext/pty/expect_sample.rb56
-rw-r--r--ext/pty/extconf.rb10
-rw-r--r--ext/pty/lib/expect.rb36
-rw-r--r--ext/pty/pty.c497
-rw-r--r--ext/pty/script.rb38
-rw-r--r--ext/pty/shl.rb96
11 files changed, 969 insertions, 0 deletions
diff --git a/ext/pty/MANIFEST b/ext/pty/MANIFEST
new file mode 100644
index 0000000..5e5af7d
--- /dev/null
+++ b/ext/pty/MANIFEST
@@ -0,0 +1,11 @@
+MANIFEST
+README
+README.expect
+README.expect.jp
+README.jp
+expect_sample.rb
+extconf.rb
+lib/expect.rb
+pty.c
+script.rb
+shl.rb
diff --git a/ext/pty/README b/ext/pty/README
new file mode 100644
index 0000000..a09469d
--- /dev/null
+++ b/ext/pty/README
@@ -0,0 +1,93 @@
+pty extension version 0.3 by A.ito
+
+1. Introduction
+
+This extension module adds ruby a functionality to execute an
+arbitrary command through pseudo tty (pty).
+
+2. Install
+
+Follow the instruction below.
+
+(1) Execute
+
+ ruby extconf.rb
+
+ then Makefile is generated.
+
+(3) Do make; make install.
+
+3. What you can do
+
+This extension module defines a module named PTY, which contains
+following module fungtions:
+
+ getpty(command)
+ spawn(command)
+
+ This function reserves a pty, executes command over the pty
+ and returns an array. The return value is an array with three
+ elements. The first element in the array is for reading and the
+ second for writing. The third element is the process ID of the
+ child process. If this function is called with an iterator block,
+ the array is passed to the block as block parameters, and the
+ function itself returns nil.
+
+ While the process spawned by this function is active, SIGCHLD
+ is captured to handle the change of the child process. When the
+ child process is suspended or finished, an exception is raised.
+ As all SIGCHLD signal is captured and processed by PTY module,
+ you can't use other function or method which spawns subprosesses
+ (including signal() and IO.popen()) while the PTY subprocesses
+ are active. Otherwise, unexpected exception will occur. To avoid
+ this problem, see protect_signal() below.
+
+ If this function is called with an iterator block, SIGCHLD signal
+ is captured only within the block. Therefore, it is risky to use
+ File objects for PTY subprocess outside the iterator block.
+
+
+ protect_signal
+
+ This function takes an iterator block. Within the iterator block,
+ no exception is raised even if any subprocess is terminated.
+ This function is used to enable functions like system() or IO.popen()
+ while PTY subprocess is active. For example,
+
+ PTY.spawn("command_foo") do |r,w|
+ ...
+ ...
+ PTY.protect_signal do
+ system "some other commands"
+ end
+ ...
+ end
+
+ disables to send exception when "some other commands" is
+ terminated.
+
+ reset_signal
+
+ Disables to handle SIGCHLD while PTY subprocess is active.
+
+
+4. License
+
+(C) Copyright 1998 by Akinori Ito.
+
+This software may be redistributed freely for this purpose, in full
+or in part, provided that this entire copyright notice is included
+on any copies of this software and applications and derivations thereof.
+
+This software is provided on an "as is" basis, without warranty of any
+kind, either expressed or implied, as to any matter including, but not
+limited to warranty of fitness of purpose, or merchantability, or
+results obtained from use of this software.
+
+5. Bug report
+
+Please feel free to send E-mail to
+
+ aito@ei5sun.yz.yamagata-u.ac.jp
+
+for any bug report, opinion, contribution, etc.
diff --git a/ext/pty/README.expect b/ext/pty/README.expect
new file mode 100644
index 0000000..fddbb6f
--- /dev/null
+++ b/ext/pty/README.expect
@@ -0,0 +1,22 @@
+ README for expect
+ by A. Ito, 28 October, 1998
+
+ Expect library adds IO class a method called expect(), which
+does similar act to tcl's expect extension.
+
+The usage of the method is:
+
+ IO#expect(pattern,timeout=9999999)
+
+where `pattern' is an instance of String or Regexp and `timeout'
+is Fixnum, which can be omitted.
+ When the method is called without block, it waits until the
+input which matches the pattern is obtained from the IO or the time
+specified as the timeout passes. When the pattern is obtained from the
+IO, the method returns an array. The first element of the array is the
+entire string obtained from the IO until the pattern matches. The
+following elements indicates the specific pattern which matched to the
+anchor in the regular expression. If the method ends because of
+timeout, it returns nil.
+ When the method is called with block, the array is passed as
+the block parameter.
diff --git a/ext/pty/README.expect.jp b/ext/pty/README.expect.jp
new file mode 100644
index 0000000..db84695
--- /dev/null
+++ b/ext/pty/README.expect.jp
@@ -0,0 +1,21 @@
+ README for expect
+ by A. Ito, 28 October, 1998
+
+ Expectライブラリは,tcl の expect パッケージと似たような機能を
+IOクラスに追加します.
+
+ 追加されるメソッドの使い方は次の通りです.
+
+ IO#expect(pattern,timeout=9999999)
+
+pattern は String か Regexp のインスタンス,timeout は Fixnum
+のインスタンスです.timeout は省略できます.
+ このメソッドがブロックなしで呼ばれた場合,まずレシーバである
+IOオブジェクトから pattern にマッチするパターンが読みこまれる
+まで待ちます.パターンが得られたら,そのパターンに関する配列を
+返します.配列の最初の要素は,pattern にマッチするまでに読みこ
+まれた内容の文字列です.2番目以降の要素は,pattern の正規表現
+の中にアンカーがあった場合に,そのアンカーにマッチする部分です.
+もしタイムアウトが起きた場合は,このメソッドはnilを返します.
+ このメソッドがブロック付きで呼ばれた場合には,マッチした要素の
+配列がブロック引数として渡され,ブロックが評価されます.
diff --git a/ext/pty/README.jp b/ext/pty/README.jp
new file mode 100644
index 0000000..5ae4fb0
--- /dev/null
+++ b/ext/pty/README.jp
@@ -0,0 +1,89 @@
+pty 拡張モジュール version 0.3 by A.ito
+
+1. はじめに
+
+この拡張モジュールは,仮想tty (pty) を通して適当なコマンドを
+実行する機能を ruby に提供します.
+
+2. インストール
+
+次のようにしてインストールしてください.
+
+(1) ruby extconf.rb
+
+ を実行すると Makefile が生成されます.
+
+(2) make; make install を実行してください.
+
+3. 何ができるか
+
+この拡張モジュールは,PTY というモジュールを定義します.その中
+には,次のようなモジュール関数が含まれています.
+
+ getpty(command)
+ spawn(command)
+
+ この関数は,仮想ttyを確保し,指定されたコマンドをその仮想tty
+ の向こうで実行し,配列を返します.戻り値は3つの要素からなる
+ 配列です.最初の要素は仮想ttyから読み出すためのIOオブジェクト,
+ 2番目は書きこむためのIOオブジェクト,3番目は子プロセスのプロ
+ セスIDです.この関数がイテレータとして呼ばれた場合,これらの
+ 要素はブロックパラメータとして渡され,関数自体はnilを返します.
+
+ この関数によって作られたサブプロセスが動いている間,子プロセス
+ の状態を監視するために SIGCHLD シグナルを捕捉します.子プロセス
+ が終了したり停止した場合には,例外が発生します.この間,すべての
+ SIGCHLD が PTY モジュールのシグナルハンドラに捕捉されるので,
+ サブプロセスを生成する他の関数(system() とか IO.popen()など)を
+ 使うと,予期しない例外が発生することがあります.これを防ぐため
+ には,下記のprotect_signal()を参照してください.
+
+ この関数がブロックパラメータ付きで呼ばれた場合には,そのブロック
+ の中でのみ SIGCHLD が捕捉されます.したがって,ブロックパラメータ
+ として渡されたIOオブジェクトを,ブロックの外に持ち出して使うの
+ は勧められません.
+
+
+ protect_signal
+
+ この関数はイテレータです.ここで指定されたブロックの中では,
+ 子プロセスが終了しても例外を発生しません.この関数を使うことで,
+ PTYの子プロセスが動いている間でも,system()や IO.popen()などの
+ 関数を安全に使うことができます.例えば,
+
+ PTY.spawn("command_foo") do |r,w|
+ ...
+ ...
+ PTY.protect_signal do
+ system "some other commands"
+ end
+ ...
+ end
+
+ このような記述により,"some other commands" が終了したときに
+ 例外が発生するのを防げます.
+
+ reset_signal
+
+ PTY の子プロセスが動いていても,そのプロセスの終了時に例外が発生
+ しないようにします.
+
+4. 利用について
+
+伊藤彰則が著作権を保有します.
+
+ソースプログラムまたはドキュメントに元の著作権表示が改変されずに
+表示されている場合に限り,誰でも,このソフトウェアを無償かつ著作
+権者に無断で利用・配布・改変できます.利用目的は限定されていませ
+ん.
+
+このプログラムの利用・配布その他このプログラムに関係する行為によ
+って生じたいかなる損害に対しても,作者は一切責任を負いません.
+
+5. バグ報告等
+
+バグレポートは歓迎します.
+
+ aito@ei5sun.yz.yamagata-u.ac.jp
+
+まで電子メールでバグレポートをお送りください.
diff --git a/ext/pty/expect_sample.rb b/ext/pty/expect_sample.rb
new file mode 100644
index 0000000..1311476
--- /dev/null
+++ b/ext/pty/expect_sample.rb
@@ -0,0 +1,56 @@
+#
+# sample program of expect.rb
+#
+# by A. Ito
+#
+# This program reports the latest version of ruby interpreter
+# by connecting to ftp server at netlab.co.jp.
+#
+require 'pty'
+require 'expect'
+
+fnames = []
+PTY.spawn("ftp ftp.netlab.co.jp") do
+ |r_f,w_f,pid|
+ w_f.sync = true
+
+ $expect_verbose = true
+
+ r_f.expect(/^Name.*: /) do
+ w_f.print "ftp\n"
+ end
+
+ if !ENV['USER'].nil?
+ username = ENV['USER']
+ elsif !ENV['LOGNAME'].nil?
+ username = ENV['LOGNAME']
+ else
+ username = 'guest'
+ end
+
+ r_f.expect('word:') do
+ w_f.print username+"@\n"
+ end
+ r_f.expect("ftp> ") do
+ w_f.print "cd pub/lang/ruby\n"
+ end
+ r_f.expect("ftp> ") do
+ w_f.print "dir\n"
+ end
+
+ r_f.expect("ftp> ") do |output|
+ for x in output[0].split("\n")
+ if x =~ /(ruby.*\.tar\.gz)/ then
+ fnames.push $1
+ end
+ end
+ end
+ begin
+ w_f.print "quit\n"
+ rescue
+ end
+end
+
+print "The latest ruby interpreter is "
+print fnames.sort.pop
+print "\n"
diff --git a/ext/pty/extconf.rb b/ext/pty/extconf.rb
new file mode 100644
index 0000000..63383f7
--- /dev/null
+++ b/ext/pty/extconf.rb
@@ -0,0 +1,10 @@
+require 'mkmf'
+
+have_header("sys/stropts.h")
+have_func("setresuid")
+$CFLAGS << "-DHAVE_DEV_PTMX" if /cygwin/ === PLATFORM
+if have_func("openpty") or
+ have_func("_getpty") or
+ have_func("ioctl")
+ create_makefile('pty')
+end
diff --git a/ext/pty/lib/expect.rb b/ext/pty/lib/expect.rb
new file mode 100644
index 0000000..54c69ed
--- /dev/null
+++ b/ext/pty/lib/expect.rb
@@ -0,0 +1,36 @@
+$expect_verbose = false
+
+class IO
+ def expect(pat,timeout=9999999)
+ buf = ''
+ case pat
+ when String
+ e_pat = Regexp.new(Regexp.quote(pat))
+ when Regexp
+ e_pat = pat
+ end
+ while true
+ if IO.select([self],nil,nil,timeout).nil? then
+ result = nil
+ break
+ end
+ c = getc.chr
+ buf << c
+ if $expect_verbose
+ STDOUT.print c
+ STDOUT.flush
+ end
+ if buf =~ e_pat then
+ result = [buf,$1,$2,$3,$4,$5,$6,$7,$8,$9]
+ break
+ end
+ end
+ if iterator? then
+ yield result
+ else
+ return result
+ end
+ nil
+ end
+end
+
diff --git a/ext/pty/pty.c b/ext/pty/pty.c
new file mode 100644
index 0000000..98be904
--- /dev/null
+++ b/ext/pty/pty.c
@@ -0,0 +1,497 @@
+#include "config.h"
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <pwd.h>
+#if !defined(HAVE_OPENPTY) && !defined(HAVE__GETPTY)
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#else
+#define WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
+#endif
+#include <ctype.h>
+
+#include <ruby.h>
+#include <rubyio.h>
+
+#include <signal.h>
+#ifdef HAVE_SYS_STROPTS_H
+#include <sys/stropts.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#define DEVICELEN 16
+
+#if !defined(HAVE_OPENPTY)
+#ifdef __hpux
+char *MasterDevice = "/dev/ptym/pty%s",
+ *SlaveDevice = "/dev/pty/tty%s",
+ *deviceNo[] = {
+ "p0","p1","p2","p3","p4","p5","p6","p7",
+ "p8","p9","pa","pb","pc","pd","pe","pf",
+ "q0","q1","q2","q3","q4","q5","q6","q7",
+ "q8","q9","qa","qb","qc","qd","qe","qf",
+ "r0","r1","r2","r3","r4","r5","r6","r7",
+ "r8","r9","ra","rb","rc","rd","re","rf",
+ "s0","s1","s2","s3","s4","s5","s6","s7",
+ "s8","s9","sa","sb","sc","sd","se","sf",
+ "t0","t1","t2","t3","t4","t5","t6","t7",
+ "t8","t9","ta","tb","tc","td","te","tf",
+ "u0","u1","u2","u3","u4","u5","u6","u7",
+ "u8","u9","ua","ub","uc","ud","ue","uf",
+ "v0","v1","v2","v3","v4","v5","v6","v7",
+ "v8","v9","va","vb","vc","vd","ve","vf",
+ "w0","w1","w2","w3","w4","w5","w6","w7",
+ "w8","w9","wa","wb","wc","wd","we","wf",
+ 0,
+ };
+#else /* NOT HPUX */
+#ifdef _IBMESA /* AIX/ESA */
+char *MasterDevice = "/dev/ptyp%s",
+ *SlaveDevice = "/dev/ttyp%s",
+ *deviceNo[] = {
+"00","01","02","03","04","05","06","07","08","09","0a","0b","0c","0d","0e","0f",
+"10","11","12","13","14","15","16","17","18","19","1a","1b","1c","1d","1e","1f",
+"20","21","22","23","24","25","26","27","28","29","2a","2b","2c","2d","2e","2f",
+"30","31","32","33","34","35","36","37","38","39","3a","3b","3c","3d","3e","3f",
+"40","41","42","43","44","45","46","47","48","49","4a","4b","4c","4d","4e","4f",
+"50","51","52","53","54","55","56","57","58","59","5a","5b","5c","5d","5e","5f",
+"60","61","62","63","64","65","66","67","68","69","6a","6b","6c","6d","6e","6f",
+"70","71","72","73","74","75","76","77","78","79","7a","7b","7c","7d","7e","7f",
+"80","81","82","83","84","85","86","87","88","89","8a","8b","8c","8d","8e","8f",
+"90","91","92","93","94","95","96","97","98","99","9a","9b","9c","9d","9e","9f",
+"a0","a1","a2","a3","a4","a5","a6","a7","a8","a9","aa","ab","ac","ad","ae","af",
+"b0","b1","b2","b3","b4","b5","b6","b7","b8","b9","ba","bb","bc","bd","be","bf",
+"c0","c1","c2","c3","c4","c5","c6","c7","c8","c9","ca","cb","cc","cd","ce","cf",
+"d0","d1","d2","d3","d4","d5","d6","d7","d8","d9","da","db","dc","dd","de","df",
+"e0","e1","e2","e3","e4","e5","e6","e7","e8","e9","ea","eb","ec","ed","ee","ef",
+"f0","f1","f2","f3","f4","f5","f6","f7","f8","f9","fa","fb","fc","fd","fe","ff",
+ };
+#else
+char *MasterDevice = "/dev/pty%s",
+ *SlaveDevice = "/dev/tty%s",
+ *deviceNo[] = {
+ "p0","p1","p2","p3","p4","p5","p6","p7",
+ "p8","p9","pa","pb","pc","pd","pe","pf",
+ "q0","q1","q2","q3","q4","q5","q6","q7",
+ "q8","q9","qa","qb","qc","qd","qe","qf",
+ "r0","r1","r2","r3","r4","r5","r6","r7",
+ "r8","r9","ra","rb","rc","rd","re","rf",
+ 0,
+ };
+#endif /* _IBMESA */
+#endif /* HPUX */
+#endif /* !defined(HAVE_OPENPTY) */
+
+char SlaveName[DEVICELEN];
+
+extern int errno;
+
+#define MAX_PTY 16
+static int n_pty,last_pty;
+static int chld_pid[MAX_PTY];
+
+#ifndef HAVE_SETEUID
+# ifdef HAVE_SETREUID
+# define seteuid(e) setreuid(-1, (e))
+# else /* NOT HAVE_SETREUID */
+# ifdef HAVE_SETRESUID
+# define seteuid(e) setresuid(-1, (e), -1)
+# else /* NOT HAVE_SETRESUID */
+ /* I can't set euid. (;_;) */
+# endif /* HAVE_SETRESUID */
+# endif /* HAVE_SETREUID */
+#endif /* NO_SETEUID */
+
+struct pty_info {
+ int fd;
+ pid_t child_pid;
+};
+
+static void
+set_signal_action(action)
+ RETSIGTYPE (*action)();
+{
+#ifdef __hpux
+ struct sigvec sv;
+ /*
+ * signal SIGCHLD should be delivered on stop of the child
+ */
+ sv.sv_handler = action;
+ sv.sv_mask = sigmask(SIGCHLD);
+ sv.sv_flags = SV_BSDSIG;
+ sigvector(SIGCHLD, &sv, (struct sigvec *) 0);
+#else /* not HPUX */
+#if defined(SA_NOCLDSTOP)
+ struct sigaction sa;
+ /*
+ * signal SIGCHLD should be delivered on stop of the child
+ * (for SVR4)
+ */
+ sa.sa_handler = action;
+ sigemptyset(&sa.sa_mask);
+ sigaddset(&sa.sa_mask, SIGCHLD);
+ sa.sa_flags = 0; /* SA_NOCLDSTOP flag is removed */
+ sigaction(SIGCHLD, &sa, (struct sigaction *) 0);
+#else
+ signal(SIGCHLD,action);
+#endif
+#endif /* not HPUX */
+
+}
+
+static void
+reset_signal_action()
+{
+ set_signal_action(SIG_DFL);
+}
+
+static RETSIGTYPE
+chld_changed()
+{
+ int cpid;
+ int i,n = -1;
+ int statusp;
+
+ for (;;) {
+#ifdef HAVE_WAITPID
+ cpid = waitpid(-1, &statusp, WUNTRACED|WNOHANG);
+#else
+ cpid = wait3(&statusp, WUNTRACED|WNOHANG, 0);
+#endif
+ if (cpid == 0 || cpid == -1)
+ return;
+ for (i = 0; i < last_pty; i++) {
+ if (chld_pid[i] == cpid) {
+ n = i;
+ goto catched;
+ }
+ }
+ rb_raise(rb_eRuntimeError, "fork: %d", cpid);
+ }
+ catched:
+
+#ifdef IF_STOPPED
+ if (IF_STOPPED(statusp)) { /* suspend */
+ rb_raise(rb_eRuntimeError, "Stopped: %d",cpid);
+ }
+#else
+#ifdef WIFSTOPPED
+ if (WIFSTOPPED(statusp)) { /* suspend */
+ rb_raise(rb_eRuntimeError, "Stopped: %d",cpid);
+ }
+#else
+---->> Either IF_STOPPED or WIFSTOPPED is needed <<----
+#endif /* WIFSTOPPED */
+#endif /* IF_STOPPED */
+ if (n >= 0) {
+ chld_pid[n] = 0;
+ n_pty--;
+ if (n_pty == 0)
+ reset_signal_action();
+ }
+ rb_raise(rb_eRuntimeError, "Child_changed: %d",cpid);
+}
+
+static void getDevice _((int*, int*));
+
+static void
+establishShell(shellname, info)
+ char *shellname;
+ struct pty_info *info;
+{
+ static int i,j,master,slave,currentPid;
+ char *p,*getenv();
+ struct passwd *pwent;
+ RETSIGTYPE chld_changed();
+
+ if (shellname[0] == '\0') {
+ if ((p = getenv("SHELL")) != NULL) {
+ shellname = p;
+ }
+ else {
+ pwent = getpwuid(getuid());
+ if (pwent && pwent->pw_shell)
+ shellname = pwent->pw_shell;
+ else
+ shellname = "/bin/sh";
+ }
+ }
+ getDevice(&master,&slave);
+
+ currentPid = getpid();
+ set_signal_action(chld_changed);
+ if((i = vfork()) < 0) {
+ rb_sys_fail("fork failed");
+ }
+
+ if(i == 0) { /* child */
+ int argc;
+ char *argv[1024];
+ currentPid = getpid();
+
+ /*
+ * Set free from process group and controlling terminal
+ */
+#ifdef HAVE_SETSID
+ (void) setsid();
+#else /* HAS_SETSID */
+# ifdef HAVE_SETPGRP
+# ifdef SETGRP_VOID
+ if (setpgrp() == -1)
+ perror("setpgrp()");
+# else /* SETGRP_VOID */
+ if (setpgrp(0, currentPid) == -1)
+ rb_sys_fail("setpgrp()");
+ if ((i = open("/dev/tty", O_RDONLY)) < 0)
+ rb_sys_fail("/dev/tty");
+ else {
+ if (ioctl(i, TIOCNOTTY, (char *)0))
+ perror("ioctl(TIOCNOTTY)");
+ close(i);
+ }
+# endif /* SETGRP_VOID */
+# endif /* HAVE_SETPGRP */
+#endif /* HAS_SETSID */
+
+ /*
+ * obtain new controlling terminal
+ */
+#if defined(TIOCSCTTY)
+ close(master);
+ (void) ioctl(slave, TIOCSCTTY, (char *)0);
+ /* errors ignored for sun */
+#else
+ close(slave);
+ slave = open(SlaveName, O_RDWR);
+ if (slave < 0) {
+ perror("open: pty slave");
+ _exit(1);
+ }
+ close(master);
+#endif
+ dup2(slave,0);
+ dup2(slave,1);
+ dup2(slave,2);
+ close(slave);
+
+ seteuid(getuid());
+
+ argc = 0;
+ for (i = 0; shellname[i];) {
+ while (isspace(shellname[i])) i++;
+ for (j = i; shellname[j] && !isspace(shellname[j]); j++);
+ argv[argc] = (char*)xmalloc(j-i+1);
+ strncpy(argv[argc],&shellname[i],j-i);
+ argv[argc][j-i] = 0;
+ i = j;
+ argc++;
+ }
+ argv[argc] = NULL;
+ execvp(argv[0],argv);
+ sleep(1);
+ _exit(1);
+ }
+
+ close(slave);
+
+ if (n_pty == last_pty) {
+ chld_pid[n_pty] = i;
+ n_pty++;
+ last_pty++;
+ }
+ else {
+ for (j = 0; j < last_pty; j++) {
+ if (chld_pid[j] == 0) {
+ chld_pid[j] = i;
+ n_pty++;
+ }
+ }
+ }
+ info->child_pid = i;
+ info->fd = master;
+}
+
+#ifdef HAVE_OPENPTY
+/*
+ * Use openpty(3) of 4.3BSD Reno and later,
+ * or the same interface function.
+ */
+static void
+getDevice(master,slave)
+ int *master,*slave;
+{
+ if (openpty(master, slave, SlaveName,
+ (struct termios *)0, (struct winsize *)0) == -1) {
+ rb_raise(rb_eRuntimeError, "openpty() failed");
+ }
+}
+#else /* HAVE_OPENPTY */
+#ifdef HAVE__GETPTY
+static void
+getDevice(master,slave)
+ int *master,*slave;
+{
+ char *name;
+
+ if (!(name = _getpty(master, O_RDWR, 0622, 0))) {
+ rb_raise(rb_eRuntimeError, "_getpty() failed");
+ }
+
+ *slave = open(name, O_RDWR);
+ strcpy(SlaveName, name);
+}
+#else /* HAVE__GETPTY */
+static void
+getDevice(master,slave)
+ int *master,*slave;
+{
+ char **p;
+ int i,j;
+ char MasterName[DEVICELEN];
+
+#ifdef HAVE_DEV_PTMX
+ char *pn;
+ void (*s)();
+
+ extern char *ptsname(int);
+ extern int unlockpt(int);
+ extern int grantpt(int);
+
+ if((i = open("/dev/ptmx", O_RDWR, 0)) != -1) {
+ s = signal(SIGCHLD, SIG_DFL);
+ if(grantpt(i) != -1) {
+ signal(SIGCHLD, s);
+ if(unlockpt(i) != -1) {
+ if((pn = ptsname(i)) != NULL) {
+ if((j = open(pn, O_RDWR, 0)) != -1) {
+#if defined I_PUSH
+ if(ioctl(j, I_PUSH, "ptem") != -1) {
+ if(ioctl(j, I_PUSH, "ldterm") != -1) {
+#endif
+ *master = i;
+ *slave = j;
+ strcpy(SlaveName, pn);
+ return;
+#if defined I_PUSH
+ }
+ }
+#endif
+ }
+ }
+ }
+ }
+ close(i);
+ }
+ rb_raise(rb_eRuntimeError, "Cannot get Master/Slave device");
+#else
+ for (p = deviceNo; *p != NULL; p++) {
+ sprintf(MasterName ,MasterDevice,*p);
+ if ((i = open(MasterName,O_RDWR,0)) >= 0) {
+ *master = i;
+ sprintf(SlaveName ,SlaveDevice,*p);
+ if ((j = open(SlaveName,O_RDWR,0)) >= 0) {
+ *slave = j;
+ chown(SlaveName, getuid(), getgid());
+ chmod(SlaveName, 0622);
+ return;
+ }
+ close(i);
+ }
+ }
+ rb_raise(rb_eRuntimeError, "Cannot get %s\n", SlaveDevice);
+#endif
+}
+#endif /* HAVE__GETPTY */
+#endif /* HAVE_OPENPTY */
+
+static void
+freeDevice()
+{
+ chmod(SlaveName, 0666);
+ chown(SlaveName, 0, 0);
+}
+
+/* ruby function: getpty */
+static VALUE
+pty_getpty(self, shell)
+ VALUE self, shell;
+{
+ VALUE res;
+ struct pty_info info;
+ OpenFile *wfptr,*rfptr;
+ NEWOBJ(rport, struct RFile);
+ NEWOBJ(wport, struct RFile);
+
+ if (n_pty == MAX_PTY+1) {
+ rb_raise(rb_eRuntimeError, "Too many ptys are open");
+ }
+
+ OBJSETUP(rport, rb_cFile, T_FILE);
+ MakeOpenFile(rport, rfptr);
+
+ OBJSETUP(wport, rb_cFile, T_FILE);
+ MakeOpenFile(wport, wfptr);
+
+ establishShell(RSTRING(shell)->ptr,&info);
+
+ rfptr->mode = rb_io_mode_flags("r");
+ rfptr->f = fdopen(info.fd, "r");
+ rfptr->path = strdup(RSTRING(shell)->ptr);
+
+ wfptr->mode = rb_io_mode_flags("w");
+ wfptr->f = fdopen(dup(info.fd), "w");
+ wfptr->path = strdup(RSTRING(shell)->ptr);
+
+ res = rb_ary_new2(2);
+ rb_ary_store(res,0,(VALUE)rport);
+ rb_ary_store(res,1,(VALUE)wport);
+ rb_ary_store(res,2,INT2FIX(info.child_pid));
+
+ if (rb_iterator_p()) {
+ rb_yield((VALUE)res);
+ reset_signal_action();
+ return Qnil;
+ }
+ else {
+ return (VALUE)res;
+ }
+}
+
+/* ruby function: protect_signal */
+static VALUE
+pty_protect(self)
+ VALUE self;
+{
+ reset_signal_action();
+ rb_yield(Qnil);
+ set_signal_action(chld_changed);
+ return self;
+}
+
+static VALUE
+pty_reset_signal(self)
+ VALUE self;
+{
+ reset_signal_action();
+ return self;
+}
+
+static VALUE cPTY;
+
+void
+Init_pty()
+{
+ cPTY = rb_define_module("PTY");
+ rb_define_module_function(cPTY,"getpty",pty_getpty,1);
+ rb_define_module_function(cPTY,"spawn",pty_getpty,1);
+ rb_define_module_function(cPTY,"protect_signal",pty_protect,0);
+ rb_define_module_function(cPTY,"reset_signal",pty_reset_signal,0);
+}
diff --git a/ext/pty/script.rb b/ext/pty/script.rb
new file mode 100644
index 0000000..6aaafec
--- /dev/null
+++ b/ext/pty/script.rb
@@ -0,0 +1,38 @@
+require 'pty'
+
+if ARGV.size == 0 then
+ ofile = "typescript"
+else
+ ofile = ARGV[0]
+end
+
+logfile = File.open(ofile,"a")
+
+system "stty -echo raw lnext ^_"
+
+PTY.spawn("/bin/csh") do
+ |r_pty,w_pty,pid|
+
+ Thread.new do
+ while true
+ w_pty.print STDIN.getc.chr
+ w_pty.flush
+ end
+ end
+
+ begin
+ while true
+ c = r_pty.getc
+ next if c.nil?
+ print c.chr
+ STDOUT.flush
+ logfile.print c.chr
+ end
+ rescue
+ # print $@,':',$!,"\n"
+ logfile.close
+ end
+end
+
+system "stty echo -raw lnext ^v"
+
diff --git a/ext/pty/shl.rb b/ext/pty/shl.rb
new file mode 100644
index 0000000..0c04a27
--- /dev/null
+++ b/ext/pty/shl.rb
@@ -0,0 +1,96 @@
+#
+# old-fashioned 'shl' like program
+# by A. Ito
+#
+# commands:
+# c creates new shell
+# C-z suspends shell
+# p lists all shell
+# 0,1,... choose shell
+# q quit
+
+require 'pty'
+
+$shells = []
+$n_shells = 0
+
+$r_pty = nil
+$w_pty = nil
+
+def writer
+ PTY.protect_signal do
+ system "stty -echo raw"
+ end
+ begin
+ while true
+ c = STDIN.getc
+ if c == 26 then # C-z
+ $reader.raise(nil)
+ return 'Suspend'
+ end
+ $w_pty.print c.chr
+ $w_pty.flush
+ end
+ rescue
+ $reader.raise(nil)
+ return 'Exit'
+ ensure
+ PTY.protect_signal do
+ system "stty echo -raw"
+ end
+ end
+end
+
+$reader = Thread.new {
+ while true
+ begin
+ next if $r_pty.nil?
+ c = $r_pty.getc
+ if c.nil? then
+ Thread.stop
+ end
+ print c.chr
+ STDOUT.flush
+ rescue
+ Thread.stop
+ end
+ end
+}
+
+# $reader.raise(nil)
+
+
+while true
+ print ">> "
+ STDOUT.flush
+ case gets
+ when /^c/i
+ $shells[$n_shells] = PTY.spawn("/bin/csh")
+ $r_pty,$w_pty = $shells[$n_shells]
+ $n_shells += 1
+ $reader.run
+ if writer == 'Exit'
+ $n_shells -= 1
+ $shells[$n_shells] = nil
+ end
+ when /^p/i
+ for i in 0..$n_shells
+ unless $shells[i].nil?
+ print i,"\n"
+ end
+ end
+ when /^([0-9]+)/
+ n = $1.to_i
+ if $shells[n].nil?
+ print "\##{i} doesn't exist\n"
+ else
+ $r_pty,$w_pty = $shells[n]
+ $reader.run
+ if writer == 'Exit' then
+ $shells[n] = nil
+ end
+ end
+ when /^q/i
+ exit
+ end
+end