--- /dev/null
+/*
+ * Please note: this implementation of openpty() is far from complete.
+ * it is just enough for portable OpenSSH's needs.
+ */
+
+/*
+ * Copyright (c) 2004 Damien Miller <djm@mindrot.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Author: Tatu Ylonen <ylo@cs.hut.fi>
+ * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
+ * All rights reserved
+ * Allocating a pseudo-terminal, and making it the controlling tty.
+ *
+ * As far as I am concerned, the code I have written for this software
+ * can be used freely for any purpose. Any derived versions of this
+ * software must be clearly marked as such, and if the derived work is
+ * incompatible with the protocol description in the RFC file, it must be
+ * called by a name other than "ssh" or "Secure Shell".
+ */
+
+#include "includes.h"
+#if !defined(HAVE_OPENPTY)
+
+#ifdef HAVE_UTIL_H
+# include <util.h>
+#endif /* HAVE_UTIL_H */
+
+#ifdef HAVE_PTY_H
+# include <pty.h>
+#endif
+#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
+# include <sys/stropts.h>
+#endif
+
+#ifndef O_NOCTTY
+#define O_NOCTTY 0
+#endif
+
+int
+openpty(int *amaster, int *aslave, char *name, struct termios *termp,
+ struct winsize *winp)
+{
+#if defined(HAVE__GETPTY)
+ /*
+ * _getpty(3) exists in SGI Irix 4.x, 5.x & 6.x -- it generates more
+ * pty's automagically when needed
+ */
+ char *slave;
+
+ if ((slave = _getpty(amaster, O_RDWR, 0622, 0)) == NULL)
+ return (-1);
+
+ /* Open the slave side. */
+ if ((*aslave = open(slave, O_RDWR | O_NOCTTY)) == -1) {
+ close(*amaster);
+ return (-1);
+ }
+ return (0);
+
+#elif defined(HAVE_DEV_PTMX)
+ /*
+ * This code is used e.g. on Solaris 2.x. (Note that Solaris 2.3
+ * also has bsd-style ptys, but they simply do not work.)
+ */
+ int ptm;
+ char *pts;
+ mysig_t old_signal;
+
+ if ((ptm = open("/dev/ptmx", O_RDWR | O_NOCTTY)) == -1)
+ return (-1);
+
+ /* XXX: need to close ptm on error? */
+ old_signal = signal(SIGCHLD, SIG_DFL);
+ if (grantpt(ptm) < 0)
+ return (-1);
+ signal(SIGCHLD, old_signal);
+
+ if (unlockpt(ptm) < 0)
+ return (-1);
+
+ if ((pts = ptsname(ptm)) == NULL)
+ return (-1);
+ *amaster = ptm;
+
+ /* Open the slave side. */
+ if ((*aslave = open(pts, O_RDWR | O_NOCTTY)) == -1) {
+ close(*amaster);
+ return (-1);
+ }
+
+#ifndef HAVE_CYGWIN
+ /*
+ * Try to push the appropriate streams modules, as described
+ * in Solaris pts(7).
+ */
+ ioctl(*aslave, I_PUSH, "ptem");
+ ioctl(*aslave, I_PUSH, "ldterm");
+# ifndef __hpux
+ ioctl(*aslave, I_PUSH, "ttcompat");
+# endif /* __hpux */
+#endif /* HAVE_CYGWIN */
+
+ return (0);
+
+#elif defined(HAVE_DEV_PTS_AND_PTC)
+ /* AIX-style pty code. */
+ const char *ttname;
+
+ if ((*amaster = open("/dev/ptc", O_RDWR | O_NOCTTY)) == -1)
+ return (-1);
+ if ((ttname = ttyname(*amaster)) == NULL)
+ return (-1);
+ if ((*aslave = open(ttname, O_RDWR | O_NOCTTY)) == -1) {
+ close(*amaster);
+ return (-1);
+ }
+ return (0);
+
+#elif defined(_UNICOS)
+ char ptbuf[64], ttbuf[64];
+ int i;
+ int highpty;
+
+ highpty = 128;
+#ifdef _SC_CRAY_NPTY
+ if ((highpty = sysconf(_SC_CRAY_NPTY)) == -1)
+ highpty = 128;
+#endif /* _SC_CRAY_NPTY */
+
+ for (i = 0; i < highpty; i++) {
+ snprintf(ptbuf, sizeof(ptbuf), "/dev/pty/%03d", i);
+ snprintf(ttbuf, sizeof(ttbuf), "/dev/ttyp%03d", i);
+ if ((*amaster = open(ptbuf, O_RDWR|O_NOCTTY)) == -1)
+ continue;
+ /* Open the slave side. */
+ if ((*aslave = open(ttbuf, O_RDWR|O_NOCTTY)) == -1) {
+ close(*amaster);
+ return (-1);
+ }
+ return (0);
+ }
+ return (-1);
+
+#else
+ /* BSD-style pty code. */
+ char ptbuf[64], ttbuf[64];
+ int i;
+ const char *ptymajors = "pqrstuvwxyzabcdefghijklmno"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+ const char *ptyminors = "0123456789abcdef";
+ int num_minors = strlen(ptyminors);
+ int num_ptys = strlen(ptymajors) * num_minors;
+ struct termios tio;
+
+ for (i = 0; i < num_ptys; i++) {
+ snprintf(ptbuf, sizeof(ptbuf), "/dev/pty%c%c",
+ ptymajors[i / num_minors], ptyminors[i % num_minors]);
+ snprintf(ttbuf, sizeof(ttbuf), "/dev/tty%c%c",
+ ptymajors[i / num_minors], ptyminors[i % num_minors]);
+
+ if ((*amaster = open(ptbuf, O_RDWR | O_NOCTTY)) == -1) {
+ /* Try SCO style naming */
+ snprintf(ptbuf, sizeof(ptbuf), "/dev/ptyp%d", i);
+ snprintf(ttbuf, sizeof(ttbuf), "/dev/ttyp%d", i);
+ if ((*amaster = open(ptbuf, O_RDWR | O_NOCTTY)) == -1)
+ continue;
+ }
+
+ /* Open the slave side. */
+ if ((*aslave = open(ttbuf, O_RDWR | O_NOCTTY)) == -1) {
+ close(*amaster);
+ return (-1);
+ }
+ /* set tty modes to a sane state for broken clients */
+ if (tcgetattr(*amaster, &tio) != -1) {
+ tio.c_lflag |= (ECHO | ISIG | ICANON);
+ tio.c_oflag |= (OPOST | ONLCR);
+ tio.c_iflag |= ICRNL;
+ tcsetattr(*amaster, TCSANOW, &tio);
+ }
+
+ return (0);
+ }
+ return (-1);
+#endif
+}
+
+#endif /* !defined(HAVE_OPENPTY) */
+
andersk / gssapi-openssh.git / blobdiff