X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/aff51935734441207923b8e59fbc3644fc4e7d2c..6a2c4cd8b3908e0d7e28789e83b4dc2b69aaf6d4:/sshpty.c

diff --git a/sshpty.c b/sshpty.c
index 50b1f2ba..efd1dfef 100644
--- a/sshpty.c
+++ b/sshpty.c
@@ -12,7 +12,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshpty.c,v 1.10 2003/06/12 07:57:38 markus Exp $");
+RCSID("$OpenBSD: sshpty.c,v 1.12 2004/06/21 17:36:31 avsm Exp $");
 
 #ifdef HAVE_UTIL_H
 # include <util.h>
@@ -22,17 +22,9 @@ RCSID("$OpenBSD: sshpty.c,v 1.10 2003/06/12 07:57:38 markus Exp $");
 #include "log.h"
 #include "misc.h"
 
-/* Pty allocated with _getpty gets broken if we do I_PUSH:es to it. */
-#if defined(HAVE__GETPTY) || defined(HAVE_OPENPTY)
-#undef HAVE_DEV_PTMX
-#endif
-
 #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
@@ -48,7 +40,6 @@ RCSID("$OpenBSD: sshpty.c,v 1.10 2003/06/12 07:57:38 markus Exp $");
 int
 pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
 {
-#if defined(HAVE_OPENPTY) || defined(BSD4_4)
 	/* openpty(3) exists in OSF/1 and some other os'es */
 	char *name;
 	int i;
@@ -64,204 +55,23 @@ pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
 
 	strlcpy(namebuf, name, namebuflen);	/* possible truncation */
 	return 1;
-#else /* HAVE_OPENPTY */
-#ifdef HAVE__GETPTY
-	/*
-	 * _getpty(3) exists in SGI Irix 4.x, 5.x & 6.x -- it generates more
-	 * pty's automagically when needed
-	 */
-	char *slave;
-
-	slave = _getpty(ptyfd, O_RDWR, 0622, 0);
-	if (slave == NULL) {
-		error("_getpty: %.100s", strerror(errno));
-		return 0;
-	}
-	strlcpy(namebuf, slave, namebuflen);
-	/* Open the slave side. */
-	*ttyfd = open(namebuf, O_RDWR | O_NOCTTY);
-	if (*ttyfd < 0) {
-		error("%.200s: %.100s", namebuf, strerror(errno));
-		close(*ptyfd);
-		return 0;
-	}
-	return 1;
-#else /* HAVE__GETPTY */
-#if 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;
-
-	ptm = open("/dev/ptmx", O_RDWR | O_NOCTTY);
-	if (ptm < 0) {
-		error("/dev/ptmx: %.100s", strerror(errno));
-		return 0;
-	}
-	old_signal = signal(SIGCHLD, SIG_DFL);
-	if (grantpt(ptm) < 0) {
-		error("grantpt: %.100s", strerror(errno));
-		return 0;
-	}
-	signal(SIGCHLD, old_signal);
-	if (unlockpt(ptm) < 0) {
-		error("unlockpt: %.100s", strerror(errno));
-		return 0;
-	}
-	pts = ptsname(ptm);
-	if (pts == NULL)
-		error("Slave pty side name could not be obtained.");
-	strlcpy(namebuf, pts, namebuflen);
-	*ptyfd = ptm;
-
-	/* Open the slave side. */
-	*ttyfd = open(namebuf, O_RDWR | O_NOCTTY);
-	if (*ttyfd < 0) {
-		error("%.100s: %.100s", namebuf, strerror(errno));
-		close(*ptyfd);
-		return 0;
-	}
-#ifndef HAVE_CYGWIN
-	/*
-	 * Push the appropriate streams modules, as described in Solaris pts(7).
-	 * HP-UX pts(7) doesn't have ttcompat module.
-	 */
-	if (ioctl(*ttyfd, I_PUSH, "ptem") < 0)
-		error("ioctl I_PUSH ptem: %.100s", strerror(errno));
-	if (ioctl(*ttyfd, I_PUSH, "ldterm") < 0)
-		error("ioctl I_PUSH ldterm: %.100s", strerror(errno));
-#ifndef __hpux
-	if (ioctl(*ttyfd, I_PUSH, "ttcompat") < 0)
-		error("ioctl I_PUSH ttcompat: %.100s", strerror(errno));
-#endif
-#endif
-	return 1;
-#else /* HAVE_DEV_PTMX */
-#ifdef HAVE_DEV_PTS_AND_PTC
-	/* AIX-style pty code. */
-	const char *name;
-
-	*ptyfd = open("/dev/ptc", O_RDWR | O_NOCTTY);
-	if (*ptyfd < 0) {
-		error("Could not open /dev/ptc: %.100s", strerror(errno));
-		return 0;
-	}
-	name = ttyname(*ptyfd);
-	if (!name)
-		fatal("Open of /dev/ptc returns device for which ttyname fails.");
-	strlcpy(namebuf, name, namebuflen);
-	*ttyfd = open(name, O_RDWR | O_NOCTTY);
-	if (*ttyfd < 0) {
-		error("Could not open pty slave side %.100s: %.100s",
-		    name, strerror(errno));
-		close(*ptyfd);
-		return 0;
-	}
-	return 1;
-#else /* HAVE_DEV_PTS_AND_PTC */
-#ifdef _UNICOS
-	char buf[64];
-	int i;
-	int highpty;
-
-#ifdef _SC_CRAY_NPTY
-	highpty = sysconf(_SC_CRAY_NPTY);
-	if (highpty == -1)
-		highpty = 128;
-#else
-	highpty = 128;
-#endif
-
-	for (i = 0; i < highpty; i++) {
-		snprintf(buf, sizeof(buf), "/dev/pty/%03d", i);
-		*ptyfd = open(buf, O_RDWR|O_NOCTTY);
-		if (*ptyfd < 0)
-			continue;
-		snprintf(namebuf, namebuflen, "/dev/ttyp%03d", i);
-		/* Open the slave side. */
-		*ttyfd = open(namebuf, O_RDWR|O_NOCTTY);
-		if (*ttyfd < 0) {
-			error("%.100s: %.100s", namebuf, strerror(errno));
-			close(*ptyfd);
-			return 0;
-		}
-		return 1;
-	}
-	return 0;
-#else
-	/* BSD-style pty code. */
-	char buf[64];
-	int i;
-	const char *ptymajors = "pqrstuvwxyzabcdefghijklmnoABCDEFGHIJKLMNOPQRSTUVWXYZ";
-	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(buf, sizeof buf, "/dev/pty%c%c", ptymajors[i / num_minors],
-			 ptyminors[i % num_minors]);
-		snprintf(namebuf, namebuflen, "/dev/tty%c%c",
-		    ptymajors[i / num_minors], ptyminors[i % num_minors]);
-
-		*ptyfd = open(buf, O_RDWR | O_NOCTTY);
-		if (*ptyfd < 0) {
-			/* Try SCO style naming */
-			snprintf(buf, sizeof buf, "/dev/ptyp%d", i);
-			snprintf(namebuf, namebuflen, "/dev/ttyp%d", i);
-			*ptyfd = open(buf, O_RDWR | O_NOCTTY);
-			if (*ptyfd < 0)
-				continue;
-		}
-
-		/* Open the slave side. */
-		*ttyfd = open(namebuf, O_RDWR | O_NOCTTY);
-		if (*ttyfd < 0) {
-			error("%.100s: %.100s", namebuf, strerror(errno));
-			close(*ptyfd);
-			return 0;
-		}
-		/* set tty modes to a sane state for broken clients */
-		if (tcgetattr(*ptyfd, &tio) < 0)
-			logit("Getting tty modes for pty failed: %.100s", strerror(errno));
-		else {
-			tio.c_lflag |= (ECHO | ISIG | ICANON);
-			tio.c_oflag |= (OPOST | ONLCR);
-			tio.c_iflag |= ICRNL;
-
-			/* Set the new modes for the terminal. */
-			if (tcsetattr(*ptyfd, TCSANOW, &tio) < 0)
-				logit("Setting tty modes for pty failed: %.100s", strerror(errno));
-		}
-
-		return 1;
-	}
-	return 0;
-#endif /* CRAY */
-#endif /* HAVE_DEV_PTS_AND_PTC */
-#endif /* HAVE_DEV_PTMX */
-#endif /* HAVE__GETPTY */
-#endif /* HAVE_OPENPTY */
 }
 
 /* Releases the tty.  Its ownership is returned to root, and permissions to 0666. */
 
 void
-pty_release(const char *ttyname)
+pty_release(const char *tty)
 {
-	if (chown(ttyname, (uid_t) 0, (gid_t) 0) < 0)
-		error("chown %.100s 0 0 failed: %.100s", ttyname, strerror(errno));
-	if (chmod(ttyname, (mode_t) 0666) < 0)
-		error("chmod %.100s 0666 failed: %.100s", ttyname, strerror(errno));
+	if (chown(tty, (uid_t) 0, (gid_t) 0) < 0)
+		error("chown %.100s 0 0 failed: %.100s", tty, strerror(errno));
+	if (chmod(tty, (mode_t) 0666) < 0)
+		error("chmod %.100s 0666 failed: %.100s", tty, strerror(errno));
 }
 
 /* Makes the tty the process's controlling tty and sets it to sane modes. */
 
 void
-pty_make_controlling_tty(int *ttyfd, const char *ttyname)
+pty_make_controlling_tty(int *ttyfd, const char *tty)
 {
 	int fd;
 #ifdef USE_VHANGUP
@@ -272,7 +82,7 @@ pty_make_controlling_tty(int *ttyfd, const char *ttyname)
 	if (setsid() < 0)
 		error("setsid: %.100s", strerror(errno));
 
-	fd = open(ttyname, O_RDWR|O_NOCTTY);
+	fd = open(tty, O_RDWR|O_NOCTTY);
 	if (fd != -1) {
 		signal(SIGHUP, SIG_IGN);
 		ioctl(fd, TCVHUP, (char *)NULL);
@@ -287,7 +97,7 @@ pty_make_controlling_tty(int *ttyfd, const char *ttyname)
 	ioctl(*ttyfd, TCSETCTTY, NULL);
 	fd = open("/dev/tty", O_RDWR);
 	if (fd < 0)
-		error("%.100s: %.100s", ttyname, strerror(errno));
+		error("%.100s: %.100s", tty, strerror(errno));
 	close(*ttyfd);
 	*ttyfd = fd;
 #else /* _UNICOS */
@@ -327,9 +137,9 @@ pty_make_controlling_tty(int *ttyfd, const char *ttyname)
 	vhangup();
 	signal(SIGHUP, old);
 #endif /* USE_VHANGUP */
-	fd = open(ttyname, O_RDWR);
+	fd = open(tty, O_RDWR);
 	if (fd < 0) {
-		error("%.100s: %.100s", ttyname, strerror(errno));
+		error("%.100s: %.100s", tty, strerror(errno));
 	} else {
 #ifdef USE_VHANGUP
 		close(*ttyfd);
@@ -364,7 +174,7 @@ pty_change_window_size(int ptyfd, int row, int col,
 }
 
 void
-pty_setowner(struct passwd *pw, const char *ttyname)
+pty_setowner(struct passwd *pw, const char *tty)
 {
 	struct group *grp;
 	gid_t gid;
@@ -386,33 +196,33 @@ pty_setowner(struct passwd *pw, const char *ttyname)
 	 * Warn but continue if filesystem is read-only and the uids match/
 	 * tty is owned by root.
 	 */
-	if (stat(ttyname, &st))
-		fatal("stat(%.100s) failed: %.100s", ttyname,
+	if (stat(tty, &st))
+		fatal("stat(%.100s) failed: %.100s", tty,
 		    strerror(errno));
 
 	if (st.st_uid != pw->pw_uid || st.st_gid != gid) {
-		if (chown(ttyname, pw->pw_uid, gid) < 0) {
+		if (chown(tty, pw->pw_uid, gid) < 0) {
 			if (errno == EROFS &&
 			    (st.st_uid == pw->pw_uid || st.st_uid == 0))
 				debug("chown(%.100s, %u, %u) failed: %.100s",
-				    ttyname, (u_int)pw->pw_uid, (u_int)gid,
+				    tty, (u_int)pw->pw_uid, (u_int)gid,
 				    strerror(errno));
 			else
 				fatal("chown(%.100s, %u, %u) failed: %.100s",
-				    ttyname, (u_int)pw->pw_uid, (u_int)gid,
+				    tty, (u_int)pw->pw_uid, (u_int)gid,
 				    strerror(errno));
 		}
 	}
 
 	if ((st.st_mode & (S_IRWXU|S_IRWXG|S_IRWXO)) != mode) {
-		if (chmod(ttyname, mode) < 0) {
+		if (chmod(tty, mode) < 0) {
 			if (errno == EROFS &&
 			    (st.st_mode & (S_IRGRP | S_IROTH)) == 0)
 				debug("chmod(%.100s, 0%o) failed: %.100s",
-				    ttyname, (u_int)mode, strerror(errno));
+				    tty, (u_int)mode, strerror(errno));
 			else
 				fatal("chmod(%.100s, 0%o) failed: %.100s",
-				    ttyname, (u_int)mode, strerror(errno));
+				    tty, (u_int)mode, strerror(errno));
 		}
 	}
 }