Mercurial > vim
annotate src/pty.c @ 2760:7fb8cdb9cb25 v7.3.156
updated for version 7.3.156
Problem: Tty names possibly left unterminated.
Solution: Use vim_strncpy() instead of strncpy().
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Mon, 11 Apr 2011 14:24:37 +0200 |
| parents | 073ff46fe397 |
| children | 107b03fdf1ad |
| rev | line source |
|---|---|
| 7 | 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 | |
| 1030 | 48 #ifdef HAVE_SYS_IOCTL_H |
| 7 | 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 | |
| 1030 | 66 #ifdef HAVE_UNISTD_H |
| 7 | 67 # include <unistd.h> |
| 68 #endif | |
| 69 | |
| 70 #if HAVE_TERMIO_H | |
| 71 # include <termio.h> | |
| 72 #else | |
| 1030 | 73 # ifdef HAVE_TERMIOS_H |
| 7 | 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 | |
| 123 static 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 | |
| 134 initmaster(f) | |
|
2154
7c8c7c95a865
First step in the Vim 7.3 branch. Changed version numbers.
Bram Moolenaar <bram@zimbu.org>
parents:
1703
diff
changeset
|
135 int f UNUSED; |
| 7 | 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 | |
| 156 SetupSlavePTY(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 | |
| 180 OpenPTY(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 | |
| 198 OpenPTY(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 | |
| 2760 | 212 vim_strncpy((char_u *)PtyName, (char_u *)m, sizeof(PtyName) - 1); |
| 213 vim_strncpy((char_u *)TtyName, (char_u *)s, sizeof(TtyName) - 1); | |
| 7 | 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 | |
| 223 OpenPTY(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 | |
| 249 OpenPTY(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 | |
| 1703 | 271 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) && !defined(MACOS_X) |
| 7 | 272 |
| 1703 | 273 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! |
| 274 * Same for Mac OS X Leopard. */ | |
| 7 | 275 #define PTY_DONE |
| 276 int | |
| 277 OpenPTY(ttyn) | |
| 278 char **ttyn; | |
| 279 { | |
| 280 int f; | |
|
2397
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
281 char *m; |
|
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
282 char *(ptsname __ARGS((int))); |
|
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
283 int unlockpt __ARGS((int)); |
|
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
284 int grantpt __ARGS((int)); |
| 7 | 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); | |
| 2760 | 304 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1); |
| 7 | 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 | |
| 315 int aixhack = -1; | |
| 316 #endif | |
| 317 | |
| 318 int | |
| 319 OpenPTY(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; | |
| 2760 | 329 vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1); |
| 1076 | 330 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
| 7 | 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 | |
| 353 static char PtyProto[] = "/dev/ptym/ptyXY"; | |
| 354 static char TtyProto[] = "/dev/pty/ttyXY"; | |
| 355 # else | |
| 356 # ifdef __BEOS__ | |
| 357 static char PtyProto[] = "/dev/pt/XY"; | |
| 358 static char TtyProto[] = "/dev/tt/XY"; | |
| 359 # else | |
| 360 static char PtyProto[] = "/dev/ptyXY"; | |
| 361 static char TtyProto[] = "/dev/ttyXY"; | |
| 362 # endif | |
| 363 # endif | |
| 364 | |
| 365 int | |
| 366 OpenPTY(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 | |
| 1076 | 394 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
| 7 | 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 |