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pjs/extensions/xmlterm/linetest/ptytest.c

370 строки
8.8 KiB
C
Исходник Ответственный История

/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "MPL"); you may not use this file
* except in compliance with the MPL. You may obtain a copy of
* the MPL at http://www.mozilla.org/MPL/
*
* Software distributed under the MPL is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the MPL for the specific language governing
* rights and limitations under the MPL.
*
* The Original Code is lineterm.
*
* The Initial Developer of the Original Code is Ramalingam Saravanan.
* Portions created by Ramalingam Saravanan <svn@xmlterm.org> are
* Copyright (C) 1999 Ramalingam Saravanan. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License (the "GPL"), in which case
* the provisions of the GPL are applicable instead of
* those above. If you wish to allow use of your version of this
* file only under the terms of the GPL and not to allow
* others to use your version of this file under the MPL, indicate
* your decision by deleting the provisions above and replace them
* with the notice and other provisions required by the GPL.
* If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
/* ptytest.c: Test driver for ptystream.c
* CPP options:
* LINUX: for Linux2.0/glibc
* SOLARIS: for Solaris2.6
*/
#include <stdio.h>
#include <termios.h>
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#ifdef SOLARIS
#include <stropts.h>
#include <poll.h>
#endif
#if defined(LINUX) || defined(BSDFAMILY)
#include <sys/ioctl.h>
#include <sys/poll.h>
#endif
#include "ptystream.h"
static struct termios tios; /* TERMIOS structure */
void pipeTest(int argc, char *argv[]);
void ptyTest(int argc, char *argv[]);
int echofd = -1;
int main(int argc, char *argv[]) {
if (argc < 4) {
fprintf(stderr, "Usage: %s pty|pipe <echo-tty-name>|'' <shell-path> ...\n",
argv[0]);
exit(-1);
}
/* Get terminal attributes */
if (tcgetattr(0, &tios) == -1) {
fprintf(stderr, "Failed to get TTY attributes\n");
exit(-1);
}
/* Disable signals, canonical mode processing, and echo */
tios.c_lflag &= ~(ISIG | ICANON | ECHO );
/* set MIN=1 and TIME=0 */
tios.c_cc[VMIN] = 1;
tios.c_cc[VTIME] = 0;
/* Set terminal attributes */
if (tcsetattr(0, TCSAFLUSH, &tios) == -1) {
fprintf(stderr, "Failed to set TTY attributes\n");
exit(-1);
}
if (strlen(argv[2]) > 0) {
/* Open TTY for echoing */
if ( (echofd = open(argv[2], O_WRONLY)) == -1)
perror("ptytest");
fprintf(stderr, "Echoing %s output to %s\n", argv[1], argv[2]);
write( echofd, "Echoing PTYTEST output ...\n", 27);
}
fprintf(stderr, "Type Control-] to terminate input\n");
if (strcmp(argv[1],"pipe") == 0) {
pipeTest(argc-3, argv+3);
} else {
ptyTest(argc-3, argv+3);
}
if (echofd >= 0) close(echofd);
exit(0);
}
/* sends raw terminal input/output to a shell through a pseudo-TTY */
void ptyTest(int argc, char *argv[])
{
struct pollfd pollFD[2];
nfds_t nfds = 2;
struct ptys ptyStruc;
unsigned char ch;
int ptyFD, pollCode;
ssize_t n_read, n_written;
char temstr[3] = "^@";
/* Create a PTY */
if (pty_create(&ptyStruc,argv,24,80,0,0,
-1,0,0,0,1) == -1) {
fprintf(stderr, "PTY creation failed\n");
exit(-1);
}
ptyFD = ptyStruc.ptyFD;
/* fprintf(stderr, "Polling for input on fd=0 (%s) and fd=%d\n",
ttyname(0), ptyFD ); */
/* Set up polling to read from parent STDIN and child STDOUT */
pollFD[0].fd = 0;
pollFD[0].events = POLLIN;
pollFD[1].fd = ptyFD;
pollFD[1].events = POLLIN;
while ( (pollCode=poll(pollFD,nfds,-1)) >= 0) {
if (pollCode == 0) continue;
pollCode = 0;
if (pollFD[0].revents != 0) {
/* Read character from parent STDIN and write to child STDIN */
ch = getchar();
/* Exit poll loop if a Control-] character is read */
if (ch == 0x1D) {
fprintf(stderr, "EXIT ptytest\n");
break;
}
if (write(ptyFD, &ch, 1) != 1) {
fprintf(stderr, "Error in writing to child STDIN\n");
exit(-1);
}
}
if (pollFD[1].revents != 0) {
/* Read character from child STDOUT and write to parent STDOUT */
if ( (n_read=read(ptyFD, &ch, 1)) < 0) {
fprintf(stderr, "Error in reading from child STDOUT\n");
if (echofd >= 0) close(echofd);
exit(-1);
}
if (n_read == 0) { /* End of file */
if (echofd >= 0) close(echofd);
exit(0);
}
if (echofd >= 0) {
/* Echo output to another TTY */
if (ch == 0x7F) {
write(echofd, "\\DEL", 4);
} else if (ch == 0x1B) {
write(echofd, "\\ESC", 4);
} else if (ch < 0x20) {
temstr[1]= ch+'@';
write(echofd, temstr, 2);
} else {
write(echofd, &ch, 1);
}
}
if (write(1, &ch, 1) != 1) {
fprintf(stderr, "Error in writing to parent STDOUT\n");
exit(-1);
}
/*
if (ioctl(1, I_FLUSH, FLUSHRW) == -1) {
fprintf(stderr, "Error return from ioctl\n");
exit(-1);
}
*/
}
}
if (pollCode != 0) {
fprintf(stderr, "Error return from poll\n");
exit(-1);
}
/* Close PTY */
pty_close(&ptyStruc);
}
/* sends raw terminal input/output to a shell through a pipe */
void pipeTest(int argc, char *argv[])
{
struct pollfd pollFD[2];
nfds_t nfds = 2;
pid_t child_pid = -1; /* child process id */
unsigned char ch;
int pipeFD[2], pipeIN, pipeOUT, procIN, procOUT;
int pollCode;
ssize_t n_read, n_written;
char temstr[3] = "^@";
/* Create process input pipe (assumed unidirectional) */
if (pipe(pipeFD) == -1) {
fprintf(stderr, "Input pipe creation failed\n");
exit(-1);
}
#ifdef DEBUG
fprintf(stderr,"Created input pipe: %d %d\n", pipeFD[0], pipeFD[1]);
#endif
procIN = pipeFD[0];
pipeIN = pipeFD[1];
/* Create process output pipe (assumed unidirectional) */
if (pipe(pipeFD) == -1) {
fprintf(stderr, "Output pipe creation failed\n");
exit(-1);
}
#ifdef DEBUG
fprintf(stderr,"Created output pipe: %d %d\n", pipeFD[0], pipeFD[1]);
#endif
pipeOUT = pipeFD[0];
procOUT = pipeFD[1];
/* Fork a child process */
child_pid = fork();
if (child_pid < 0) {
fprintf(stderr, "Fork failed\n");
exit(-1);
}
#ifdef DEBUG
fprintf(stderr, "Fork child process %d\n", child_pid);
#endif
if (child_pid == 0) {
/* Child process */
if (dup2(procIN, 0) == -1) {
fprintf(stderr, "Dup2 failed for stdin of child\n");
exit(-1);
}
if (dup2(procOUT, 1) == -1) {
fprintf(stderr, "Dup2 failed for stdout of child\n");
exit(-1);
}
execvp(argv[0], argv);
fprintf(stderr, "Exec failed for command %s\n", argv[0]);
exit(-1);
}
/* Set up polling to read from parent STDIN and child STDOUT */
pollFD[0].fd = 0;
pollFD[0].events = POLLIN;
pollFD[1].fd = pipeOUT;
pollFD[1].events = POLLIN;
while ( (pollCode=poll(pollFD,nfds,-1)) >= 0) {
if (pollFD[0].revents != 0) {
/* Read character from parent STDIN and write to child STDIN */
ch = getchar();
/* Exit poll loop if a Control-] is read */
if (ch == 0x1D) break;
if (write(pipeIN, &ch, 1) != 1) {
fprintf(stderr, "Error in writing to child STDIN\n");
exit(-1);
}
}
if (pollFD[1].revents != 0) {
/* Read character from child STDOUT and write to parent STDOUT */
if ( (n_read=read(pipeOUT, &ch, 1)) < 0) {
fprintf(stderr, "Error in reading from child STDOUT\n");
if (echofd >= 0) close(echofd);
exit(-1);
}
if (n_read == 0) { /* End of file */
if (echofd >= 0) close(echofd);
exit(0);
}
if (echofd >= 0) {
/* Echo output to another TTY */
if (ch == 0x7F) {
write(echofd, "\\DEL", 4);
} else if (ch == 0x1B) {
write(echofd, "\\ESC", 4);
} else if (ch < 0x20) {
temstr[1]= ch+'@';
write(echofd, temstr, 2);
} else {
write(echofd, &ch, 1);
}
}
if (write(1, &ch, 1) != 1) {
fprintf(stderr, "Error in writing to parent STDOUT\n");
exit(-1);
}
/*
if (ioctl(1, I_FLUSH, FLUSHRW) == -1) {
fprintf(stderr, "Error return from ioctl\n");
exit(-1);
}
*/
}
}
if (kill(child_pid, SIGKILL) == -1) {
fprintf(stderr, "Error return from kill\n");
exit(-1);
}
if (pollCode != 0) {
fprintf(stderr, "Error return from poll\n");
exit(-1);
}
/* Close pipes (assumed unidirectional) */
close(pipeIN);
close(pipeOUT);
close(procIN);
close(procOUT);
}
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