1/* vi:set ts=8 sts=4 sw=4: 2 * 3 * VIM - Vi IMproved by Bram Moolenaar 4 * 5 * Do ":help uganda" in Vim to read copying and usage conditions. 6 * Do ":help credits" in Vim to see a list of people who contributed. 7 * See README.txt for an overview of the Vim source code. 8 */ 9/* 10 * The stuff in this file mostly comes from the "screen" program. 11 * Included with permission from Juergen Weigert. 12 * Copied from "pty.c". "putenv.c" was used for putenv() in misc2.c. 13 * 14 * It has been modified to work better with Vim. 15 * The parts that are not used in Vim have been deleted. 16 * See the "screen" sources for the complete stuff. 17 */ 18 19/* Copyright (c) 1993 20 * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de) 21 * Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de) 22 * Copyright (c) 1987 Oliver Laumann 23 * 24 * This program is free software; you can redistribute it and/or modify 25 * it under the terms of the GNU General Public License as published by 26 * the Free Software Foundation; either version 2, or (at your option) 27 * any later version. 28 * 29 * This program is distributed in the hope that it will be useful, 30 * but WITHOUT ANY WARRANTY; without even the implied warranty of 31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 32 * GNU General Public License for more details. 33 * 34 * You should have received a copy of the GNU General Public License 35 * along with this program (see the file COPYING); if not, write to the 36 * Free Software Foundation, Inc., 37 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 38 */ 39 40#include "vim.h" 41 42#include <signal.h> 43 44#ifdef __CYGWIN32__ 45# include <sys/termios.h> 46#endif 47 48#ifdef HAVE_SYS_IOCTL_H 49# include <sys/ioctl.h> 50#endif 51 52#if HAVE_STROPTS_H 53#include <sys/types.h> 54#ifdef sinix 55#define buf_T __system_buf_t__ 56#endif 57#include <stropts.h> 58#ifdef sinix 59#undef buf_T 60#endif 61# ifdef sun 62# include <sys/conf.h> 63# endif 64#endif 65 66#ifdef HAVE_UNISTD_H 67# include <unistd.h> 68#endif 69 70#if HAVE_TERMIO_H 71# include <termio.h> 72#else 73# ifdef HAVE_TERMIOS_H 74# include <termios.h> 75# endif 76#endif 77 78#if HAVE_SYS_STREAM_H 79# include <sys/stream.h> 80#endif 81 82#if HAVE_SYS_PTEM_H 83# include <sys/ptem.h> 84#endif 85 86#if !defined(sun) && !defined(VMS) && !defined(MACOS) 87# include <sys/ioctl.h> 88#endif 89 90#if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL) 91# include <sys/ttold.h> 92#endif 93 94#ifdef ISC 95# include <sys/tty.h> 96# include <sys/sioctl.h> 97# include <sys/pty.h> 98#endif 99 100#ifdef sgi 101# include <sys/sysmacros.h> 102#endif 103 104#if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux) 105# define hpux 106#endif 107 108/* 109 * if no PTYRANGE[01] is in the config file, we pick a default 110 */ 111#ifndef PTYRANGE0 112# define PTYRANGE0 "qprs" 113#endif 114#ifndef PTYRANGE1 115# define PTYRANGE1 "0123456789abcdef" 116#endif 117 118/* SVR4 pseudo ttys don't seem to work with SCO-5 */ 119#ifdef M_UNIX 120# undef HAVE_SVR4_PTYS 121#endif 122 123static void initmaster __ARGS((int)); 124 125/* 126 * Open all ptys with O_NOCTTY, just to be on the safe side 127 * (RISCos mips breaks otherwise) 128 */ 129#ifndef O_NOCTTY 130# define O_NOCTTY 0 131#endif 132 133 static void 134initmaster(f) 135 int f UNUSED; 136{ 137#ifndef VMS 138# ifdef POSIX 139 tcflush(f, TCIOFLUSH); 140# else 141# ifdef TIOCFLUSH 142 (void)ioctl(f, TIOCFLUSH, (char *) 0); 143# endif 144# endif 145# ifdef LOCKPTY 146 (void)ioctl(f, TIOCEXCL, (char *) 0); 147# endif 148#endif 149} 150 151/* 152 * This causes a hang on some systems, but is required for a properly working 153 * pty on others. Needs to be tuned... 154 */ 155 int 156SetupSlavePTY(fd) 157 int fd; 158{ 159 if (fd < 0) 160 return 0; 161#if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX) 162# if defined(HAVE_SYS_PTEM_H) || defined(hpux) 163 if (ioctl(fd, I_PUSH, "ptem") != 0) 164 return -1; 165# endif 166 if (ioctl(fd, I_PUSH, "ldterm") != 0) 167 return -1; 168# ifdef sun 169 if (ioctl(fd, I_PUSH, "ttcompat") != 0) 170 return -1; 171# endif 172#endif 173 return 0; 174} 175 176 177#if defined(OSX) && !defined(PTY_DONE) 178#define PTY_DONE 179 int 180OpenPTY(ttyn) 181 char **ttyn; 182{ 183 int f; 184 static char TtyName[32]; 185 186 if ((f = open_controlling_pty(TtyName)) < 0) 187 return -1; 188 initmaster(f); 189 *ttyn = TtyName; 190 return f; 191} 192#endif 193 194#if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \ 195 && !defined(PTY_DONE) 196#define PTY_DONE 197 int 198OpenPTY(ttyn) 199 char **ttyn; 200{ 201 char *m, *s; 202 int f; 203 /* used for opening a new pty-pair: */ 204 static char PtyName[32]; 205 static char TtyName[32]; 206 207 if ((f = getpseudotty(&s, &m)) < 0) 208 return -1; 209#ifdef _SEQUENT_ 210 fvhangup(s); 211#endif 212 strncpy(PtyName, m, sizeof(PtyName)); 213 strncpy(TtyName, s, sizeof(TtyName)); 214 initmaster(f); 215 *ttyn = TtyName; 216 return f; 217} 218#endif 219 220#if defined(__sgi) && !defined(PTY_DONE) 221#define PTY_DONE 222 int 223OpenPTY(ttyn) 224 char **ttyn; 225{ 226 int f; 227 char *name; 228 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG); 229 230 /* 231 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and 232 * exec() /usr/adm/mkpts 233 */ 234 sigcld = signal(SIGCHLD, SIG_DFL); 235 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0); 236 signal(SIGCHLD, sigcld); 237 238 if (name == 0) 239 return -1; 240 initmaster(f); 241 *ttyn = name; 242 return f; 243} 244#endif 245 246#if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) 247#define PTY_DONE 248 int 249OpenPTY(ttyn) 250 char **ttyn; 251{ 252 int f; 253 struct stat buf; 254 /* used for opening a new pty-pair: */ 255 static char TtyName[32]; 256 257 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0) 258 return -1; 259 if (mch_fstat(f, &buf) < 0) 260 { 261 close(f); 262 return -1; 263 } 264 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev)); 265 initmaster(f); 266 *ttyn = TtyName; 267 return f; 268} 269#endif 270 271#if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) && !defined(MACOS_X) 272 273/* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! 274 * Same for Mac OS X Leopard. */ 275#define PTY_DONE 276 int 277OpenPTY(ttyn) 278 char **ttyn; 279{ 280 int f; 281 char *m; 282 char *(ptsname __ARGS((int))); 283 int unlockpt __ARGS((int)); 284 int grantpt __ARGS((int)); 285 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG); 286 /* used for opening a new pty-pair: */ 287 static char TtyName[32]; 288 289 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) 290 return -1; 291 292 /* 293 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and 294 * exec()s pt_chmod 295 */ 296 sigcld = signal(SIGCHLD, SIG_DFL); 297 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) 298 { 299 signal(SIGCHLD, sigcld); 300 close(f); 301 return -1; 302 } 303 signal(SIGCHLD, sigcld); 304 strncpy(TtyName, m, sizeof(TtyName)); 305 initmaster(f); 306 *ttyn = TtyName; 307 return f; 308} 309#endif 310 311#if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) 312#define PTY_DONE 313 314#ifdef _IBMR2 315int aixhack = -1; 316#endif 317 318 int 319OpenPTY(ttyn) 320 char **ttyn; 321{ 322 int f; 323 /* used for opening a new pty-pair: */ 324 static char TtyName[32]; 325 326 /* a dumb looking loop replaced by mycrofts code: */ 327 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0) 328 return -1; 329 strncpy(TtyName, ttyname(f), sizeof(TtyName)); 330 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) 331 { 332 close(f); 333 return -1; 334 } 335 initmaster(f); 336# ifdef _IBMR2 337 if (aixhack >= 0) 338 close(aixhack); 339 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0) 340 { 341 close(f); 342 return -1; 343 } 344# endif 345 *ttyn = TtyName; 346 return f; 347} 348#endif 349 350#ifndef PTY_DONE 351 352# ifdef hpux 353static char PtyProto[] = "/dev/ptym/ptyXY"; 354static char TtyProto[] = "/dev/pty/ttyXY"; 355# else 356# ifdef __BEOS__ 357static char PtyProto[] = "/dev/pt/XY"; 358static char TtyProto[] = "/dev/tt/XY"; 359# else 360static char PtyProto[] = "/dev/ptyXY"; 361static char TtyProto[] = "/dev/ttyXY"; 362# endif 363# endif 364 365 int 366OpenPTY(ttyn) 367 char **ttyn; 368{ 369 char *p, *q, *l, *d; 370 int f; 371 /* used for opening a new pty-pair: */ 372 static char PtyName[32]; 373 static char TtyName[32]; 374 375 strcpy(PtyName, PtyProto); 376 strcpy(TtyName, TtyProto); 377 for (p = PtyName; *p != 'X'; p++) 378 ; 379 for (q = TtyName; *q != 'X'; q++) 380 ; 381 for (l = PTYRANGE0; (*p = *l) != '\0'; l++) 382 { 383 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++) 384 { 385#if !defined(MACOS) || defined(USE_CARBONIZED) 386 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) 387#else 388 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1) 389#endif 390 continue; 391 q[0] = *l; 392 q[1] = *d; 393#ifndef MACOS 394 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) 395 { 396 close(f); 397 continue; 398 } 399#endif 400#if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3) 401 /* Hack to ensure that the slave side of the pty is 402 * unused. May not work in anything other than SunOS4.1 403 */ 404 { 405 int pgrp; 406 407 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */ 408 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO) 409 { 410 close(f); 411 continue; 412 } 413 } 414#endif 415 initmaster(f); 416 *ttyn = TtyName; 417 return f; 418 } 419 } 420 return -1; 421} 422#endif 423