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-rw-r--r--sshpty.c192
1 files changed, 1 insertions, 191 deletions
diff --git a/sshpty.c b/sshpty.c
index 50b1f2ba3..0fe3891b6 100644
--- a/sshpty.c
+++ b/sshpty.c
@@ -12,7 +12,7 @@
12 */ 12 */
13 13
14#include "includes.h" 14#include "includes.h"
15RCSID("$OpenBSD: sshpty.c,v 1.10 2003/06/12 07:57:38 markus Exp $"); 15RCSID("$OpenBSD: sshpty.c,v 1.11 2004/01/11 21:55:06 deraadt Exp $");
16 16
17#ifdef HAVE_UTIL_H 17#ifdef HAVE_UTIL_H
18# include <util.h> 18# include <util.h>
@@ -22,17 +22,9 @@ RCSID("$OpenBSD: sshpty.c,v 1.10 2003/06/12 07:57:38 markus Exp $");
22#include "log.h" 22#include "log.h"
23#include "misc.h" 23#include "misc.h"
24 24
25/* Pty allocated with _getpty gets broken if we do I_PUSH:es to it. */
26#if defined(HAVE__GETPTY) || defined(HAVE_OPENPTY)
27#undef HAVE_DEV_PTMX
28#endif
29
30#ifdef HAVE_PTY_H 25#ifdef HAVE_PTY_H
31# include <pty.h> 26# include <pty.h>
32#endif 27#endif
33#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
34# include <sys/stropts.h>
35#endif
36 28
37#ifndef O_NOCTTY 29#ifndef O_NOCTTY
38#define O_NOCTTY 0 30#define O_NOCTTY 0
@@ -48,7 +40,6 @@ RCSID("$OpenBSD: sshpty.c,v 1.10 2003/06/12 07:57:38 markus Exp $");
48int 40int
49pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen) 41pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
50{ 42{
51#if defined(HAVE_OPENPTY) || defined(BSD4_4)
52 /* openpty(3) exists in OSF/1 and some other os'es */ 43 /* openpty(3) exists in OSF/1 and some other os'es */
53 char *name; 44 char *name;
54 int i; 45 int i;
@@ -64,187 +55,6 @@ pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
64 55
65 strlcpy(namebuf, name, namebuflen); /* possible truncation */ 56 strlcpy(namebuf, name, namebuflen); /* possible truncation */
66 return 1; 57 return 1;
67#else /* HAVE_OPENPTY */
68#ifdef HAVE__GETPTY
69 /*
70 * _getpty(3) exists in SGI Irix 4.x, 5.x & 6.x -- it generates more
71 * pty's automagically when needed
72 */
73 char *slave;
74
75 slave = _getpty(ptyfd, O_RDWR, 0622, 0);
76 if (slave == NULL) {
77 error("_getpty: %.100s", strerror(errno));
78 return 0;
79 }
80 strlcpy(namebuf, slave, namebuflen);
81 /* Open the slave side. */
82 *ttyfd = open(namebuf, O_RDWR | O_NOCTTY);
83 if (*ttyfd < 0) {
84 error("%.200s: %.100s", namebuf, strerror(errno));
85 close(*ptyfd);
86 return 0;
87 }
88 return 1;
89#else /* HAVE__GETPTY */
90#if defined(HAVE_DEV_PTMX)
91 /*
92 * This code is used e.g. on Solaris 2.x. (Note that Solaris 2.3
93 * also has bsd-style ptys, but they simply do not work.)
94 */
95 int ptm;
96 char *pts;
97 mysig_t old_signal;
98
99 ptm = open("/dev/ptmx", O_RDWR | O_NOCTTY);
100 if (ptm < 0) {
101 error("/dev/ptmx: %.100s", strerror(errno));
102 return 0;
103 }
104 old_signal = signal(SIGCHLD, SIG_DFL);
105 if (grantpt(ptm) < 0) {
106 error("grantpt: %.100s", strerror(errno));
107 return 0;
108 }
109 signal(SIGCHLD, old_signal);
110 if (unlockpt(ptm) < 0) {
111 error("unlockpt: %.100s", strerror(errno));
112 return 0;
113 }
114 pts = ptsname(ptm);
115 if (pts == NULL)
116 error("Slave pty side name could not be obtained.");
117 strlcpy(namebuf, pts, namebuflen);
118 *ptyfd = ptm;
119
120 /* Open the slave side. */
121 *ttyfd = open(namebuf, O_RDWR | O_NOCTTY);
122 if (*ttyfd < 0) {
123 error("%.100s: %.100s", namebuf, strerror(errno));
124 close(*ptyfd);
125 return 0;
126 }
127#ifndef HAVE_CYGWIN
128 /*
129 * Push the appropriate streams modules, as described in Solaris pts(7).
130 * HP-UX pts(7) doesn't have ttcompat module.
131 */
132 if (ioctl(*ttyfd, I_PUSH, "ptem") < 0)
133 error("ioctl I_PUSH ptem: %.100s", strerror(errno));
134 if (ioctl(*ttyfd, I_PUSH, "ldterm") < 0)
135 error("ioctl I_PUSH ldterm: %.100s", strerror(errno));
136#ifndef __hpux
137 if (ioctl(*ttyfd, I_PUSH, "ttcompat") < 0)
138 error("ioctl I_PUSH ttcompat: %.100s", strerror(errno));
139#endif
140#endif
141 return 1;
142#else /* HAVE_DEV_PTMX */
143#ifdef HAVE_DEV_PTS_AND_PTC
144 /* AIX-style pty code. */
145 const char *name;
146
147 *ptyfd = open("/dev/ptc", O_RDWR | O_NOCTTY);
148 if (*ptyfd < 0) {
149 error("Could not open /dev/ptc: %.100s", strerror(errno));
150 return 0;
151 }
152 name = ttyname(*ptyfd);
153 if (!name)
154 fatal("Open of /dev/ptc returns device for which ttyname fails.");
155 strlcpy(namebuf, name, namebuflen);
156 *ttyfd = open(name, O_RDWR | O_NOCTTY);
157 if (*ttyfd < 0) {
158 error("Could not open pty slave side %.100s: %.100s",
159 name, strerror(errno));
160 close(*ptyfd);
161 return 0;
162 }
163 return 1;
164#else /* HAVE_DEV_PTS_AND_PTC */
165#ifdef _UNICOS
166 char buf[64];
167 int i;
168 int highpty;
169
170#ifdef _SC_CRAY_NPTY
171 highpty = sysconf(_SC_CRAY_NPTY);
172 if (highpty == -1)
173 highpty = 128;
174#else
175 highpty = 128;
176#endif
177
178 for (i = 0; i < highpty; i++) {
179 snprintf(buf, sizeof(buf), "/dev/pty/%03d", i);
180 *ptyfd = open(buf, O_RDWR|O_NOCTTY);
181 if (*ptyfd < 0)
182 continue;
183 snprintf(namebuf, namebuflen, "/dev/ttyp%03d", i);
184 /* Open the slave side. */
185 *ttyfd = open(namebuf, O_RDWR|O_NOCTTY);
186 if (*ttyfd < 0) {
187 error("%.100s: %.100s", namebuf, strerror(errno));
188 close(*ptyfd);
189 return 0;
190 }
191 return 1;
192 }
193 return 0;
194#else
195 /* BSD-style pty code. */
196 char buf[64];
197 int i;
198 const char *ptymajors = "pqrstuvwxyzabcdefghijklmnoABCDEFGHIJKLMNOPQRSTUVWXYZ";
199 const char *ptyminors = "0123456789abcdef";
200 int num_minors = strlen(ptyminors);
201 int num_ptys = strlen(ptymajors) * num_minors;
202 struct termios tio;
203
204 for (i = 0; i < num_ptys; i++) {
205 snprintf(buf, sizeof buf, "/dev/pty%c%c", ptymajors[i / num_minors],
206 ptyminors[i % num_minors]);
207 snprintf(namebuf, namebuflen, "/dev/tty%c%c",
208 ptymajors[i / num_minors], ptyminors[i % num_minors]);
209
210 *ptyfd = open(buf, O_RDWR | O_NOCTTY);
211 if (*ptyfd < 0) {
212 /* Try SCO style naming */
213 snprintf(buf, sizeof buf, "/dev/ptyp%d", i);
214 snprintf(namebuf, namebuflen, "/dev/ttyp%d", i);
215 *ptyfd = open(buf, O_RDWR | O_NOCTTY);
216 if (*ptyfd < 0)
217 continue;
218 }
219
220 /* Open the slave side. */
221 *ttyfd = open(namebuf, O_RDWR | O_NOCTTY);
222 if (*ttyfd < 0) {
223 error("%.100s: %.100s", namebuf, strerror(errno));
224 close(*ptyfd);
225 return 0;
226 }
227 /* set tty modes to a sane state for broken clients */
228 if (tcgetattr(*ptyfd, &tio) < 0)
229 logit("Getting tty modes for pty failed: %.100s", strerror(errno));
230 else {
231 tio.c_lflag |= (ECHO | ISIG | ICANON);
232 tio.c_oflag |= (OPOST | ONLCR);
233 tio.c_iflag |= ICRNL;
234
235 /* Set the new modes for the terminal. */
236 if (tcsetattr(*ptyfd, TCSANOW, &tio) < 0)
237 logit("Setting tty modes for pty failed: %.100s", strerror(errno));
238 }
239
240 return 1;
241 }
242 return 0;
243#endif /* CRAY */
244#endif /* HAVE_DEV_PTS_AND_PTC */
245#endif /* HAVE_DEV_PTMX */
246#endif /* HAVE__GETPTY */
247#endif /* HAVE_OPENPTY */
248} 58}
249 59
250/* Releases the tty. Its ownership is returned to root, and permissions to 0666. */ 60/* Releases the tty. Its ownership is returned to root, and permissions to 0666. */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 03:39:18 +0000