mirror of
git://git.code.sf.net/p/zsh/code
synced 2024-10-02 00:41:44 +02:00
Initial revision
This commit is contained in:
Tanaka Akira
parent
0ea326e2b4
commit
e2cc547411
40
Doc/Zsh/mod_zpty.yo
Normal file
40
Doc/Zsh/mod_zpty.yo
Normal file
@ -0,0 +1,40 @@
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COMMENT(!MOD!zsh/zpty
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A builtin for starting a command in a pseudo-terminal.
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!MOD!)
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The tt(zsh/zpty) module offers one builtin:
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startitem()
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findex(zpty)
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xitem(tt(zpty) [ tt(-e) ] [ tt(-b) ] var(name) var(command) [ var(args ...) ])
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xitem(tt(zpty) tt(-d) [ var(names) ... ])
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xitem(tt(zpty) tt(-w) [ tt(-n) ] var(name) var(strings ...))
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xitem(tt(zpty) tt(-r) var(name) [ var(param) [ var(pattern) ] ])
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item(tt(zpty) [ tt(-L) ])(
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In the first form, the var(command) is started with the var(args) as
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arguments. After this, the var(name) can be used in further calls to
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tt(zpty) to refer to this command. With the tt(-e) option given, the
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pseudo-terminal will be set up so that input characters are echoed and
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with the tt(-b) option given, input and output from and to the
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pseudo-terminal will be blocking.
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The second form with the tt(-d) option is used to delete commands
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started before by giving their var(names). If no var(names) are given,
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all commands are deleted. Deleting a command makes the HUP signal be
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sent to the process started for it.
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The tt(-w) option can be used to sent the command var(name) the given
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var(strings) as input (separated by spaces). If the tt(-n) option is
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not given, a newline will be sent after the last var(string).
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The tt(-r) option can be used to read the output of the command
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var(name). Without a var(param) argument, the string read will be
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printed to standard output. With a var(param) argument, the string
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read will be put in the parameter named var(param). If the
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var(pattern) is also given, output will be read until the whole string
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read matches the var(pattern).
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The last form without any arguments is used to list the commands
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currently defined. If the tt(-L) option is given, this is done in the
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form of calls to the tt(zpty) builtin.
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)
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enditem()
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564
Src/Modules/zpty.c
Normal file
564
Src/Modules/zpty.c
Normal file
@ -0,0 +1,564 @@
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/*
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* zpty.c - sub-processes with pseudo terminals
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*
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* This file is part of zsh, the Z shell.
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*
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* Copyright (c) 2000 Sven Wischnowsky
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and to distribute modified versions of this software for any
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* purpose, provided that the above copyright notice and the following
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* two paragraphs appear in all copies of this software.
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*
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* In no event shall Sven Wischnowsky or the Zsh Development Group be liable
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* to any party for direct, indirect, special, incidental, or consequential
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* damages arising out of the use of this software and its documentation,
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* even if Sven Wischnowsky and the Zsh Development Group have been advised of
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* the possibility of such damage.
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*
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* Sven Wischnowsky and the Zsh Development Group specifically disclaim any
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose. The software
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* provided hereunder is on an "as is" basis, and Sven Wischnowsky and the
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* Zsh Development Group have no obligation to provide maintenance,
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* support, updates, enhancements, or modifications.
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*
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*/
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#include "zpty.mdh"
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#include "zpty.pro"
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typedef struct ptycmd *Ptycmd;
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struct ptycmd {
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Ptycmd next;
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char *name;
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char **args;
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int fd;
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int pid;
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int echo;
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int block;
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int fin;
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};
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static Ptycmd ptycmds;
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static int
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ptynonblock(int fd)
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{
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#ifdef O_NDELAY
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# ifdef O_NONBLOCK
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# define NONBLOCK (O_NDELAY|O_NONBLOCK)
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# else /* !O_NONBLOCK */
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# define NONBLOCK O_NDELAY
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# endif /* !O_NONBLOCK */
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#else /* !O_NDELAY */
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# ifdef O_NONBLOCK
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# define NONBLOCK O_NONBLOCK
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# else /* !O_NONBLOCK */
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# define NONBLOCK 0
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# endif /* !O_NONBLOCK */
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#endif /* !O_NDELAY */
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#if NONBLOCK
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long mode;
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mode = fcntl(fd, F_GETFL, 0);
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if (mode != -1 && !(mode & NONBLOCK) &&
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!fcntl(fd, F_SETFL, mode | NONBLOCK))
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return 1;
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#endif /* NONBLOCK */
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return 0;
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#undef NONBLOCK
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}
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/**/
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static int
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ptygettyinfo(int fd, struct ttyinfo *ti)
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{
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if (fd != -1) {
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#ifdef HAVE_TERMIOS_H
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# ifdef HAVE_TCGETATTR
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if (tcgetattr(fd, &ti->tio) == -1)
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# else
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if (ioctl(fd, TCGETS, &ti->tio) == -1)
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# endif
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return 1;
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#else
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# ifdef HAVE_TERMIO_H
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ioctl(fd, TCGETA, &ti->tio);
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# else
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ioctl(fd, TIOCGETP, &ti->sgttyb);
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ioctl(fd, TIOCLGET, &ti->lmodes);
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ioctl(fd, TIOCGETC, &ti->tchars);
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ioctl(fd, TIOCGLTC, &ti->ltchars);
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# endif
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#endif
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return 0;
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}
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return 1;
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}
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/**/
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static void
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ptysettyinfo(int fd, struct ttyinfo *ti)
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{
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if (fd != -1) {
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#ifdef HAVE_TERMIOS_H
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# ifdef HAVE_TCGETATTR
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# ifndef TCSADRAIN
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# define TCSADRAIN 1 /* XXX Princeton's include files are screwed up */
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# endif
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tcsetattr(fd, TCSADRAIN, &ti->tio);
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/* if (tcsetattr(SHTTY, TCSADRAIN, &ti->tio) == -1) */
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# else
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ioctl(fd, TCSETS, &ti->tio);
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/* if (ioctl(SHTTY, TCSETS, &ti->tio) == -1) */
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# endif
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/* zerr("settyinfo: %e",NULL,errno)*/ ;
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#else
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# ifdef HAVE_TERMIO_H
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ioctl(fd, TCSETA, &ti->tio);
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# else
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ioctl(fd, TIOCSETN, &ti->sgttyb);
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ioctl(fd, TIOCLSET, &ti->lmodes);
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ioctl(fd, TIOCSETC, &ti->tchars);
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ioctl(fd, TIOCSLTC, &ti->ltchars);
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# endif
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#endif
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}
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}
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static Ptycmd
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getptycmd(char *name)
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{
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Ptycmd p;
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for (p = ptycmds; p; p = p->next)
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if (!strcmp(p->name, name))
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return p;
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return NULL;
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}
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/**** maybe we should use configure here */
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/**** and we certainly need more/better #if tests */
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#ifdef __osf__
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static int
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get_pty(int *master, int *slave)
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{
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return openpty(master, slave, NULL, NULL, NULL);
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}
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#else /* ! __osf__ */
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#if __SVR4
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#include <sys/stropts.h>
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static int
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get_pty(int *master, int *slave)
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{
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int mfd, sfd;
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char *name;
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if ((mfd = open("/dev/ptmx", O_RDWR)) < 0)
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return 1;
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if (!(name = ptsname(mfd)) || grantpt(mfd) || unlockpt(mfd)) {
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close(mfd);
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return 1;
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}
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if ((sfd = open(name, O_RDWR)) < 0) {
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close(mfd);
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return 1;
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}
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if (ioctl(sfd, I_PUSH, "ptem") ||
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ioctl(sfd, I_PUSH, "ldterm") ||
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ioctl(sfd, I_PUSH, "ttcompat")) {
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close(mfd);
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close(sfd);
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return 1;
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}
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*master = mfd;
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*slave = sfd;
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return 0;
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}
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#else /* ! __SVR4 */
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static int
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get_pty(int *master, int *slave)
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{
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#ifdef __linux
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static char char1[] = "abcdefghijklmnopqrstuvwxyz";
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static char char2[] = "0123456789abcdef";
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#else /* ! __linux */
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static char char1[] = "pq";
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static char char2[] = "0123456789abcdef";
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#endif /* __linux */
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char name[11], *p1, *p2;
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int mfd, sfd;
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strcpy(name, "/dev/ptyxx");
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for (p1 = char1; *p1; p1++) {
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name[8] = *p1;
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for (p2 = char2; *p2; p2++) {
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name[9] = *p2;
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if ((mfd = open(name, O_RDWR)) >= 0) {
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name[5] = 't';
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if ((sfd = open(name, O_RDWR)) >= 0) {
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*master = mfd;
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*slave = sfd;
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return 0;
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}
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name[5] = 'p';
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close(mfd);
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}
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}
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}
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return 1;
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}
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#endif /* __SVR4 */
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#endif /* __osf__ */
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static int
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newptycmd(char *nam, char *pname, char **args, int echo, int block)
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{
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Ptycmd p;
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int master, slave, pid;
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char *cmd;
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if (!(cmd = findcmd(*args, 1))) {
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zerrnam(nam, "unknown command: %s", *args, 0);
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return 1;
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}
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if (get_pty(&master, &slave)) {
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zerrnam(nam, "can't open pseudo terminal", NULL, 0);
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return 1;
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}
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if ((pid = fork()) == -1) {
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close(master);
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close(slave);
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zerrnam(nam, "couldn't create pty command: %s", pname, 0);
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return 1;
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} else if (!pid) {
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if (!echo) {
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struct ttyinfo info;
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|
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if (!ptygettyinfo(slave, &info)) {
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#ifdef HAVE_TERMIOS_H
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info.tio.c_lflag &= ~ECHO;
|
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#else
|
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#ifdef HAVE_TERMIO_H
|
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info.tio.c_lflag &= ~ECHO;
|
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#else
|
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info.tio.lmodes &= ~ECHO; /**** dunno if this is right */
|
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#endif
|
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#endif
|
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ptysettyinfo(slave, &info);
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}
|
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}
|
||||
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#ifdef TIOCGWINSZ
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if (interact) {
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struct ttyinfo info;
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if (ioctl(slave, TIOCGWINSZ, (char *) &info.winsize) == 0) {
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info.winsize.ws_row = lines;
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info.winsize.ws_col = columns;
|
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ioctl(slave, TIOCSWINSZ, (char *) &info.winsize);
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}
|
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}
|
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#endif /* TIOCGWINSZ */
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||||
signal_default(SIGTERM);
|
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signal_default(SIGINT);
|
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signal_default(SIGQUIT);
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close(0);
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close(1);
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close(2);
|
||||
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dup2(slave, 0);
|
||||
dup2(slave, 1);
|
||||
dup2(slave, 2);
|
||||
|
||||
close(slave);
|
||||
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||||
execve(cmd, args, environ);
|
||||
exit(0);
|
||||
}
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master = movefd(master);
|
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close(slave);
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|
||||
p = (Ptycmd) zalloc(sizeof(*p));
|
||||
|
||||
p->name = ztrdup(pname);
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||||
PERMALLOC {
|
||||
p->args = arrdup(args);
|
||||
} LASTALLOC;
|
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p->fd = master;
|
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p->pid = pid;
|
||||
p->echo = echo;
|
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p->block = block;
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p->fin = 0;
|
||||
|
||||
p->next = ptycmds;
|
||||
ptycmds = p;
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|
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if (!block)
|
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ptynonblock(master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
deleteptycmd(Ptycmd cmd)
|
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{
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Ptycmd p, q;
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|
||||
for (q = NULL, p = ptycmds; p != cmd; q = p, p = p->next);
|
||||
|
||||
if (p != cmd)
|
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return;
|
||||
|
||||
if (q)
|
||||
q->next = p->next;
|
||||
else
|
||||
ptycmds = p->next;
|
||||
|
||||
zsfree(p->name);
|
||||
freearray(p->args);
|
||||
|
||||
kill(p->pid, SIGHUP);
|
||||
|
||||
zclose(cmd->fd);
|
||||
|
||||
zfree(p, sizeof(*p));
|
||||
}
|
||||
|
||||
static void
|
||||
deleteallptycmds(void)
|
||||
{
|
||||
Ptycmd p, n;
|
||||
|
||||
for (p = ptycmds; p; p = n) {
|
||||
n = p->next;
|
||||
deleteptycmd(p);
|
||||
}
|
||||
}
|
||||
|
||||
/**** a better process handling would be nice */
|
||||
|
||||
static void
|
||||
checkptycmd(Ptycmd cmd)
|
||||
{
|
||||
if (kill(cmd->pid, 0) < 0) {
|
||||
cmd->fin = 1;
|
||||
zclose(cmd->fd);
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
ptyread(char *nam, Ptycmd cmd, char **args)
|
||||
{
|
||||
int blen = 256, used = 0, ret;
|
||||
char *buf = (char *) zhalloc(blen + 1);
|
||||
Patprog prog = NULL;
|
||||
|
||||
if (*args && args[1]) {
|
||||
char *p;
|
||||
|
||||
if (args[2]) {
|
||||
zerrnam(nam, "too many arguments", NULL, 0);
|
||||
return 1;
|
||||
}
|
||||
p = dupstring(args[1]);
|
||||
tokenize(p);
|
||||
remnulargs(p);
|
||||
if (!(prog = patcompile(p, PAT_STATIC, NULL))) {
|
||||
zerrnam(nam, "bad pattern: %s", args[1], 0);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
do {
|
||||
while ((ret = read(cmd->fd, buf + used, 1)) == 1) {
|
||||
if (++used == blen) {
|
||||
buf = hrealloc(buf, blen, blen << 1);
|
||||
blen <<= 1;
|
||||
}
|
||||
}
|
||||
buf[used] = '\0';
|
||||
} while (prog && !pattry(prog, buf));
|
||||
|
||||
if (*args)
|
||||
setsparam(*args, ztrdup(buf));
|
||||
else
|
||||
printf("%s", buf);
|
||||
|
||||
return !used;
|
||||
}
|
||||
|
||||
static int
|
||||
ptywrite(Ptycmd cmd, char **args, int nonl)
|
||||
{
|
||||
if (*args) {
|
||||
char sp = ' ';
|
||||
|
||||
while (*args) {
|
||||
write(cmd->fd, *args, strlen(*args));
|
||||
|
||||
if (*++args)
|
||||
write(cmd->fd, &sp, 1);
|
||||
}
|
||||
if (!nonl) {
|
||||
sp = '\n';
|
||||
write(cmd->fd, &sp, 1);
|
||||
}
|
||||
} else {
|
||||
int n;
|
||||
char buf[BUFSIZ];
|
||||
|
||||
while ((n = read(0, buf, BUFSIZ)) > 0)
|
||||
write(cmd->fd, buf, n);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**/
|
||||
static int
|
||||
bin_zpty(char *nam, char **args, char *ops, int func)
|
||||
{
|
||||
if ((ops['r'] && ops['w']) ||
|
||||
((ops['r'] || ops['w']) && (ops['d'] || ops['e'] ||
|
||||
ops['b'] || ops['L'])) ||
|
||||
(ops['n'] && (ops['b'] || ops['e'] || ops['r'] ||
|
||||
ops['d'] || ops['L'])) ||
|
||||
(ops['d'] && (ops['b'] || ops['e'] || ops['L'])) ||
|
||||
(ops['L'] && (ops['b'] || ops['e']))) {
|
||||
zerrnam(nam, "illegal option combination", NULL, 0);
|
||||
return 1;
|
||||
}
|
||||
if (ops['r'] || ops['w']) {
|
||||
Ptycmd p;
|
||||
|
||||
if (!*args) {
|
||||
zerrnam(nam, "missing pty command name", NULL, 0);
|
||||
return 1;
|
||||
} else if (!(p = getptycmd(*args))) {
|
||||
zerrnam(nam, "no such pty command: %s", *args, 0);
|
||||
return 1;
|
||||
}
|
||||
checkptycmd(p);
|
||||
if (p->fin)
|
||||
return 1;
|
||||
return (ops['r'] ?
|
||||
ptyread(nam, p, args + 1) :
|
||||
ptywrite(p, args + 1, ops['n']));
|
||||
} else if (ops['d']) {
|
||||
Ptycmd p;
|
||||
int ret = 0;
|
||||
|
||||
if (*args) {
|
||||
while (*args)
|
||||
if ((p = getptycmd(*args++)))
|
||||
deleteptycmd(p);
|
||||
else {
|
||||
zwarnnam(nam, "no such pty command: %s", args[-1], 0);
|
||||
ret = 1;
|
||||
}
|
||||
} else
|
||||
deleteallptycmds();
|
||||
|
||||
return ret;
|
||||
} else if (*args) {
|
||||
if (!args[1]) {
|
||||
zerrnam(nam, "missing command", NULL, 0);
|
||||
return 1;
|
||||
}
|
||||
if (getptycmd(*args)) {
|
||||
zerrnam(nam, "pty command name already used: %s", *args, 0);
|
||||
return 1;
|
||||
}
|
||||
return newptycmd(nam, *args, args + 1, ops['e'], ops['b']);
|
||||
} else {
|
||||
Ptycmd p;
|
||||
char **a;
|
||||
|
||||
for (p = ptycmds; p; p = p->next) {
|
||||
checkptycmd(p);
|
||||
if (ops['L'])
|
||||
printf("%s %s%s%s ", nam, (p->echo ? "-e " : ""),
|
||||
(p->block ? "-b " : ""), p->name);
|
||||
else if (p->fin)
|
||||
printf("(finished) %s: ", p->name);
|
||||
else
|
||||
printf("(%d) %s: ", p->pid, p->name);
|
||||
for (a = p->args; *a; ) {
|
||||
quotedzputs(*a++, stdout);
|
||||
if (*a)
|
||||
putchar(' ');
|
||||
}
|
||||
putchar('\n');
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static int
|
||||
ptyhook(Hookdef d, void *dummy)
|
||||
{
|
||||
deleteallptycmds();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct builtin bintab[] = {
|
||||
BUILTIN("zpty", 0, bin_zpty, 0, -1, 0, "ebdrwLn", NULL),
|
||||
};
|
||||
|
||||
/**/
|
||||
int
|
||||
setup_(Module m)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**/
|
||||
int
|
||||
boot_(Module m)
|
||||
{
|
||||
ptycmds = NULL;
|
||||
|
||||
addhookfunc("exit", ptyhook);
|
||||
return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
|
||||
}
|
||||
|
||||
/**/
|
||||
int
|
||||
cleanup_(Module m)
|
||||
{
|
||||
deletehookfunc("exit", ptyhook);
|
||||
deleteallptycmds();
|
||||
deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**/
|
||||
int
|
||||
finish_(Module m)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
5
Src/Modules/zpty.mdd
Normal file
5
Src/Modules/zpty.mdd
Normal file
@ -0,0 +1,5 @@
|
||||
name=zsh/zpty
|
||||
|
||||
autobins="zpty"
|
||||
|
||||
objects="zpty.o"
|
||||
Loading…
Reference in New Issue
Block a user