1 /* vi:set ts=8 sts=4 sw=4 noet: 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 * This specific version is distibuted under the Vim license (attribution by 19 * Juergen Weigert), the GPL applies to the original version, see the 20 * copyright notice below. 21 */ 22 23 /* Copyright (c) 1993 24 * Juergen Weigert ([email protected]) 25 * Michael Schroeder ([email protected]) 26 * Copyright (c) 1987 Oliver Laumann 27 * 28 * This program is free software; you can redistribute it and/or modify 29 * it under the terms of the GNU General Public License as published by 30 * the Free Software Foundation; either version 2, or (at your option) 31 * any later version. 32 * 33 * This program is distributed in the hope that it will be useful, 34 * but WITHOUT ANY WARRANTY; without even the implied warranty of 35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 36 * GNU General Public License for more details. 37 * 38 * You should have received a copy of the GNU General Public License 39 * along with this program (see the file COPYING); if not, write to the 40 * Free Software Foundation, Inc., 41 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 42 */ 43 44 #include "vim.h" 45 46 #if defined(FEAT_GUI) || defined(FEAT_JOB_CHANNEL) 47 48 #include <signal.h> 49 50 #ifdef __CYGWIN32__ 51 # include <sys/termios.h> 52 #endif 53 54 #ifdef HAVE_SYS_IOCTL_H 55 # include <sys/ioctl.h> 56 #endif 57 58 #if HAVE_STROPTS_H 59 #include <sys/types.h> 60 #ifdef sinix 61 #define buf_T __system_buf_t__ 62 #endif 63 #include <stropts.h> 64 #ifdef sinix 65 #undef buf_T 66 #endif 67 # ifdef SUN_SYSTEM 68 # include <sys/conf.h> 69 # endif 70 #endif 71 72 #ifdef HAVE_UNISTD_H 73 # include <unistd.h> 74 #endif 75 76 #if HAVE_TERMIO_H 77 # include <termio.h> 78 #else 79 # ifdef HAVE_TERMIOS_H 80 # include <termios.h> 81 # endif 82 #endif 83 84 #if HAVE_SYS_STREAM_H 85 # include <sys/stream.h> 86 #endif 87 88 #if HAVE_SYS_PTEM_H 89 # include <sys/ptem.h> 90 #endif 91 92 #if !defined(SUN_SYSTEM) && !defined(VMS) 93 # include <sys/ioctl.h> 94 #endif 95 96 #if defined(SUN_SYSTEM) && defined(LOCKPTY) && !defined(TIOCEXCL) 97 # include <sys/ttold.h> 98 #endif 99 100 #ifdef ISC 101 # include <sys/tty.h> 102 # include <sys/sioctl.h> 103 # include <sys/pty.h> 104 #endif 105 106 #ifdef sgi 107 # include <sys/sysmacros.h> 108 #endif 109 110 #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux) 111 # define hpux 112 #endif 113 114 /* 115 * if no PTYRANGE[01] is in the config file, we pick a default 116 */ 117 #ifndef PTYRANGE0 118 # define PTYRANGE0 "qprs" 119 #endif 120 #ifndef PTYRANGE1 121 # define PTYRANGE1 "0123456789abcdef" 122 #endif 123 124 /* SVR4 pseudo ttys don't seem to work with SCO-5 */ 125 #ifdef M_UNIX 126 # undef HAVE_SVR4_PTYS 127 #endif 128 129 static void initmaster(int); 130 131 /* 132 * Open all ptys with O_NOCTTY, just to be on the safe side. 133 */ 134 #ifndef O_NOCTTY 135 # define O_NOCTTY 0 136 #endif 137 138 static void 139 initmaster(int f UNUSED) 140 { 141 #ifndef VMS 142 # ifdef POSIX 143 tcflush(f, TCIOFLUSH); 144 # else 145 # ifdef TIOCFLUSH 146 (void)ioctl(f, TIOCFLUSH, (char *) 0); 147 # endif 148 # endif 149 # ifdef LOCKPTY 150 (void)ioctl(f, TIOCEXCL, (char *) 0); 151 # endif 152 #endif 153 } 154 155 /* 156 * This causes a hang on some systems, but is required for a properly working 157 * pty on others. Needs to be tuned... 158 */ 159 int 160 SetupSlavePTY(int fd) 161 { 162 if (fd < 0) 163 return 0; 164 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX) 165 # if defined(HAVE_SYS_PTEM_H) || defined(hpux) 166 if (ioctl(fd, I_PUSH, "ptem") != 0) 167 return -1; 168 # endif 169 if (ioctl(fd, I_PUSH, "ldterm") != 0) 170 return -1; 171 # ifdef SUN_SYSTEM 172 if (ioctl(fd, I_PUSH, "ttcompat") != 0) 173 return -1; 174 # endif 175 #endif 176 return 0; 177 } 178 179 180 #if defined(OSX) && !defined(PTY_DONE) 181 #define PTY_DONE 182 int 183 OpenPTY(char **ttyn) 184 { 185 int f; 186 static char TtyName[32]; 187 188 if ((f = open_controlling_pty(TtyName)) < 0) 189 return -1; 190 initmaster(f); 191 *ttyn = TtyName; 192 return f; 193 } 194 #endif 195 196 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \ 197 && !defined(PTY_DONE) 198 #define PTY_DONE 199 int 200 OpenPTY(char **ttyn) 201 { 202 char *m, *s; 203 int f; 204 /* used for opening a new pty-pair: */ 205 static char PtyName[32]; 206 static char TtyName[32]; 207 208 if ((f = getpseudotty(&s, &m)) < 0) 209 return -1; 210 #ifdef _SEQUENT_ 211 fvhangup(s); 212 #endif 213 vim_strncpy((char_u *)PtyName, (char_u *)m, sizeof(PtyName) - 1); 214 vim_strncpy((char_u *)TtyName, (char_u *)s, sizeof(TtyName) - 1); 215 initmaster(f); 216 *ttyn = TtyName; 217 return f; 218 } 219 #endif 220 221 #if defined(__sgi) && !defined(PTY_DONE) 222 #define PTY_DONE 223 int 224 OpenPTY(char **ttyn) 225 { 226 int f; 227 char *name; 228 RETSIGTYPE (*sigcld) 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 249 OpenPTY(char **ttyn) 250 { 251 int f; 252 stat_T buf; 253 /* used for opening a new pty-pair: */ 254 static char TtyName[32]; 255 256 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0) 257 return -1; 258 if (mch_fstat(f, &buf) < 0) 259 { 260 close(f); 261 return -1; 262 } 263 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev)); 264 initmaster(f); 265 *ttyn = TtyName; 266 return f; 267 } 268 #endif 269 270 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) \ 271 && !(defined(MACOS_X) && !defined(MAC_OS_X_VERSION_10_6)) 272 273 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! 274 * Same for Mac OS X Leopard (10.5). */ 275 #define PTY_DONE 276 int 277 OpenPTY(char **ttyn) 278 { 279 int f; 280 char *m; 281 char *(ptsname(int)); 282 int unlockpt(int); 283 int grantpt(int); 284 RETSIGTYPE (*sigcld) SIGPROTOARG; 285 /* used for opening a new pty-pair: */ 286 static char TtyName[32]; 287 288 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) 289 return -1; 290 291 /* 292 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and 293 * exec()s pt_chmod 294 */ 295 sigcld = signal(SIGCHLD, SIG_DFL); 296 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) 297 { 298 signal(SIGCHLD, sigcld); 299 close(f); 300 return -1; 301 } 302 signal(SIGCHLD, sigcld); 303 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1); 304 initmaster(f); 305 *ttyn = TtyName; 306 return f; 307 } 308 #endif 309 310 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) 311 #define PTY_DONE 312 313 #ifdef _IBMR2 314 int aixhack = -1; 315 #endif 316 317 int 318 OpenPTY(char **ttyn) 319 { 320 int f; 321 /* used for opening a new pty-pair: */ 322 static char TtyName[32]; 323 324 /* a dumb looking loop replaced by mycrofts code: */ 325 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0) 326 return -1; 327 vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1); 328 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) 329 { 330 close(f); 331 return -1; 332 } 333 initmaster(f); 334 # ifdef _IBMR2 335 if (aixhack >= 0) 336 close(aixhack); 337 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0) 338 { 339 close(f); 340 return -1; 341 } 342 # endif 343 *ttyn = TtyName; 344 return f; 345 } 346 #endif 347 348 #ifndef PTY_DONE 349 350 # ifdef hpux 351 static char PtyProto[] = "/dev/ptym/ptyXY"; 352 static char TtyProto[] = "/dev/pty/ttyXY"; 353 # else 354 # ifdef __BEOS__ 355 static char PtyProto[] = "/dev/pt/XY"; 356 static char TtyProto[] = "/dev/tt/XY"; 357 # else 358 static char PtyProto[] = "/dev/ptyXY"; 359 static char TtyProto[] = "/dev/ttyXY"; 360 # endif 361 # endif 362 363 int 364 OpenPTY(char **ttyn) 365 { 366 char *p, *q, *l, *d; 367 int f; 368 /* used for opening a new pty-pair: */ 369 static char PtyName[32]; 370 static char TtyName[32]; 371 372 strcpy(PtyName, PtyProto); 373 strcpy(TtyName, TtyProto); 374 for (p = PtyName; *p != 'X'; p++) 375 ; 376 for (q = TtyName; *q != 'X'; q++) 377 ; 378 for (l = PTYRANGE0; (*p = *l) != '\0'; l++) 379 { 380 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++) 381 { 382 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) 383 continue; 384 q[0] = *l; 385 q[1] = *d; 386 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) 387 { 388 close(f); 389 continue; 390 } 391 #if defined(SUN_SYSTEM) && defined(TIOCGPGRP) && !defined(SUNOS3) 392 /* Hack to ensure that the slave side of the pty is 393 * unused. May not work in anything other than SunOS4.1 394 */ 395 { 396 int pgrp; 397 398 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */ 399 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO) 400 { 401 close(f); 402 continue; 403 } 404 } 405 #endif 406 initmaster(f); 407 *ttyn = TtyName; 408 return f; 409 } 410 } 411 return -1; 412 } 413 #endif 414 415 #endif /* FEAT_GUI || FEAT_TERMINAL */ 416