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eterm/src/command.c

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/*
* Copyright (C) 1997-2009, Michael Jennings
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of the Software, its documentation and marketing & publicity
* materials, and acknowledgment shall be given in the documentation, materials
* and software packages that this Software was used.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
static const char cvs_ident[] = "$Id$";
/* includes: */
#include "config.h"
#include "feature.h"
/* System Headers */
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <sys/types.h>
#include <limits.h>
/* X11 Headers */
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/Xos.h>
#include <X11/Xproto.h>
#include <X11/IntrinsicP.h>
#ifdef HAVE_XRES_EXT
# include <X11/extensions/XRes.h>
#endif
#ifdef PTY_GRP_NAME
# include <grp.h>
#endif
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#if defined (__svr4__)
# include <sys/resource.h> /* for struct rlimit */
# include <sys/stropts.h> /* for I_PUSH */
# ifdef HAVE_SYS_STRTIO_H
# include <sys/strtio.h>
# endif
# ifdef HAVE_BSDTTY_H
# include <bsdtty.h>
# endif
# define _NEW_TTY_CTRL /* to get proper defines in <termios.h> */
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#ifdef HAVE_TERMIOS_H
# include <termios.h>
#else
# include <sgtty.h>
#endif
#if defined(__sun) && defined(__SVR4)
# include <sys/strredir.h>
#endif
#include <sys/wait.h>
#include <sys/stat.h>
#if defined(linux)
# include <linux/tty.h> /* For N_TTY_BUF_SIZE. */
#endif
#ifdef MULTI_CHARSET
# include <locale.h>
# include <langinfo.h>
# include <iconv.h>
# include <wchar.h>
#endif
/* Eterm-specific Headers */
#include "command.h"
#include "startup.h"
#include "events.h"
#include "font.h"
#include "grkelot.h"
#include "options.h"
#include "pixmap.h"
#ifdef PROFILE
# include "profile.h"
#endif
#include "screen.h"
#include "scrollbar.h"
#include "string.h"
#include "term.h"
#ifdef UTMP_SUPPORT
# include "eterm_utmp.h"
#endif
#include "windows.h"
#include "buttons.h"
#include "menus.h"
#ifdef ESCREEN
# include "screamcfg.h"
# ifdef NS_HAVE_TWIN
# include <Tw/Tw.h>
TW_DECL_MAGIC(libscream_magic);
# endif
#endif
static RETSIGTYPE handle_child_signal(int);
static RETSIGTYPE handle_exit_signal(int);
static RETSIGTYPE handle_crash(int);
static RETSIGTYPE x_resource_dump(int);
/* local variables */
int my_ruid, my_euid, my_rgid, my_egid;
char initial_dir[PATH_MAX + 1];
static char *ptydev = NULL, *ttydev = NULL; /* pty/tty name */
int cmd_fd = -1; /* file descriptor connected to the command */
int pipe_fd = -1;
pid_t cmd_pid = -1; /* process id if child */
int Xfd = -1; /* file descriptor of X server connection */
unsigned int num_fds = 0; /* number of file descriptors being used */
struct stat ttyfd_stat; /* original status of the tty we will use */
int refresh_count = 0, refresh_limit = 1, refresh_type = FAST_REFRESH;
unsigned char cmdbuf_base[CMD_BUF_SIZE], *cmdbuf_ptr, *cmdbuf_endp;
/* Addresses pasting large amounts of data
* code pinched from xterm
*/
static char *v_buffer; /* pointer to physical buffer */
static char *v_bufstr = NULL; /* beginning of area to write */
static char *v_bufptr; /* end of area to write */
static char *v_bufend; /* end of physical buffer */
#ifdef USE_XIM
XIM xim_input_method = NULL;
XIC xim_input_context = NULL; /* input context */
static XIMStyle xim_input_style = 0;
# ifndef XSetIMValues
extern char *XSetIMValues(XIM im, ...);
# endif
#endif
/* Substitutes for missing system functions */
#if !defined(_POSIX_VERSION) && defined(__svr4__)
int
getdtablesize(void)
{
struct rlimit rlim;
getrlimit(RLIMIT_NOFILE, &rlim);
return rlim.rlim_cur;
}
# endif
/* Take care of suid/sgid super-user (root) privileges */
void
privileges(int mode)
{
#ifdef __CYGWIN32__
return;
#endif
switch (mode) {
case IGNORE:
/* Revoke suid/sgid privs and return to normal uid/gid -- mej */
D_UTMP(("[%ld]: Before privileges(REVERT): [ %ld, %ld ] [ %ld, %ld ]\n", getpid(), getuid(), getgid(), geteuid(),
getegid()));
#ifdef HAVE_SETRESGID
setresgid(my_rgid, my_rgid, my_egid);
#elif defined(HAVE_SAVED_UIDS)
setregid(my_rgid, my_rgid);
#else
setregid(my_egid, -1);
setregid(-1, my_rgid);
#endif
#ifdef HAVE_SETRESUID
setresuid(my_ruid, my_ruid, my_euid);
#elif defined(HAVE_SAVED_UIDS)
setreuid(my_ruid, my_ruid);
#else
setreuid(my_euid, -1);
setreuid(-1, my_ruid);
#endif
D_UTMP(("[%ld]: After privileges(REVERT): [ %ld, %ld ] [ %ld, %ld ]\n", getpid(), getuid(), getgid(), geteuid(),
getegid()));
break;
case SAVE:
break;
case RESTORE:
D_UTMP(("[%ld]: Before privileges(INVOKE): [ %ld, %ld ] [ %ld, %ld ]\n", getpid(), getuid(), getgid(), geteuid(),
getegid()));
#ifdef HAVE_SETRESUID
setresuid(my_ruid, my_euid, my_euid);
#elif defined(HAVE_SAVED_UIDS)
setreuid(my_ruid, my_euid);
#else
setreuid(-1, my_euid);
setreuid(my_ruid, -1);
#endif
#ifdef HAVE_SETRESGID
setresgid(my_rgid, my_egid, my_egid);
#elif defined(HAVE_SAVED_UIDS)
setregid(my_rgid, my_egid);
#else
setregid(-1, my_egid);
setregid(my_rgid, -1);
#endif
D_UTMP(("[%ld]: After privileges(INVOKE): [ %ld, %ld ] [ %ld, %ld ]\n", getpid(), getuid(), getgid(), geteuid(),
getegid()));
break;
}
}
char *
sig_to_str(int sig)
{
#ifdef SIGHUP
if (sig == SIGHUP) {
return ("SIGHUP");
}
#endif
#ifdef SIGINT
if (sig == SIGINT) {
return ("SIGINT");
}
#endif
#ifdef SIGQUIT
if (sig == SIGQUIT) {
return ("SIGQUIT");
}
#endif
#ifdef SIGILL
if (sig == SIGILL) {
return ("SIGILL");
}
#endif
#ifdef SIGTRAP
if (sig == SIGTRAP) {
return ("SIGTRAP");
}
#endif
#ifdef SIGABRT
if (sig == SIGABRT) {
return ("SIGABRT");
}
#endif
#ifdef SIGIOT
if (sig == SIGIOT) {
return ("SIGIOT");
}
#endif
#ifdef SIGEMT
if (sig == SIGEMT) {
return ("SIGEMT");
}
#endif
#ifdef SIGFPE
if (sig == SIGFPE) {
return ("SIGFPE");
}
#endif
#ifdef SIGKILL
if (sig == SIGKILL) {
return ("SIGKILL");
}
#endif
#ifdef SIGBUS
if (sig == SIGBUS) {
return ("SIGBUS");
}
#endif
#ifdef SIGSEGV
if (sig == SIGSEGV) {
return ("SIGSEGV");
}
#endif
#ifdef SIGSYS
if (sig == SIGSYS) {
return ("SIGSYS");
}
#endif
#ifdef SIGPIPE
if (sig == SIGPIPE) {
return ("SIGPIPE");
}
#endif
#ifdef SIGALRM
if (sig == SIGALRM) {
return ("SIGALRM");
}
#endif
#ifdef SIGTERM
if (sig == SIGTERM) {
return ("SIGTERM");
}
#endif
#ifdef SIGUSR1
if (sig == SIGUSR1) {
return ("SIGUSR1");
}
#endif
#ifdef SIGUSR2
if (sig == SIGUSR2) {
return ("SIGUSR2");
}
#endif
#ifdef SIGCHLD
if (sig == SIGCHLD) {
return ("SIGCHLD");
}
#endif
#ifdef SIGCLD
if (sig == SIGCLD) {
return ("SIGCLD");
}
#endif
#ifdef SIGPWR
if (sig == SIGPWR) {
return ("SIGPWR");
}
#endif
#ifdef SIGVTALRM
if (sig == SIGVTALRM) {
return ("SIGVTALRM");
}
#endif
#ifdef SIGPROF
if (sig == SIGPROF) {
return ("SIGPROF");
}
#endif
#ifdef SIGIO
if (sig == SIGIO) {
return ("SIGIO");
}
#endif
#ifdef SIGPOLL
if (sig == SIGPOLL) {
return ("SIGPOLL");
}
#endif
#ifdef SIGWINCH
if (sig == SIGWINCH) {
return ("SIGWINCH");
}
#endif
#ifdef SIGWINDOW
if (sig == SIGWINDOW) {
return ("SIGWINDOW");
}
#endif
#ifdef SIGSTOP
if (sig == SIGSTOP) {
return ("SIGSTOP");
}
#endif
#ifdef SIGTSTP
if (sig == SIGTSTP) {
return ("SIGTSTP");
}
#endif
#ifdef SIGCONT
if (sig == SIGCONT) {
return ("SIGCONT");
}
#endif
#ifdef SIGTTIN
if (sig == SIGTTIN) {
return ("SIGTTIN");
}
#endif
#ifdef SIGTTOU
if (sig == SIGTTOU) {
return ("SIGTTOU");
}
#endif
#ifdef SIGURG
if (sig == SIGURG) {
return ("SIGURG");
}
#endif
#ifdef SIGLOST
if (sig == SIGLOST) {
return ("SIGLOST");
}
#endif
#ifdef SIGRESERVE
if (sig == SIGRESERVE) {
return ("SIGRESERVE");
}
#endif
#ifdef SIGDIL
if (sig == SIGDIL) {
return ("SIGDIL");
}
#endif
#ifdef SIGXCPU
if (sig == SIGXCPU) {
return ("SIGXCPU");
}
#endif
#ifdef SIGXFSZ
if (sig == SIGXFSZ) {
return ("SIGXFSZ");
}
#endif
return ("Unknown signal");
}
const char *
event_type_to_name(int type)
{
if (type == KeyPress) {
return "KeyPress";
}
if (type == KeyRelease) {
return "KeyRelease";
}
if (type == ButtonPress) {
return "ButtonPress";
}
if (type == ButtonRelease) {
return "ButtonRelease";
}
if (type == MotionNotify) {
return "MotionNotify";
}
if (type == EnterNotify) {
return "EnterNotify";
}
if (type == LeaveNotify) {
return "LeaveNotify";
}
if (type == FocusIn) {
return "FocusIn";
}
if (type == FocusOut) {
return "FocusOut";
}
if (type == KeymapNotify) {
return "KeymapNotify";
}
if (type == Expose) {
return "Expose";
}
if (type == GraphicsExpose) {
return "GraphicsExpose";
}
if (type == NoExpose) {
return "NoExpose";
}
if (type == VisibilityNotify) {
return "VisibilityNotify";
}
if (type == CreateNotify) {
return "CreateNotify";
}
if (type == DestroyNotify) {
return "DestroyNotify";
}
if (type == UnmapNotify) {
return "UnmapNotify";
}
if (type == MapNotify) {
return "MapNotify";
}
if (type == MapRequest) {
return "MapRequest";
}
if (type == ReparentNotify) {
return "ReparentNotify";
}
if (type == ConfigureNotify) {
return "ConfigureNotify";
}
if (type == ConfigureRequest) {
return "ConfigureRequest";
}
if (type == GravityNotify) {
return "GravityNotify";
}
if (type == ResizeRequest) {
return "ResizeRequest";
}
if (type == CirculateNotify) {
return "CirculateNotify";
}
if (type == CirculateRequest) {
return "CirculateRequest";
}
if (type == PropertyNotify) {
return "PropertyNotify";
}
if (type == SelectionClear) {
return "SelectionClear";
}
if (type == SelectionRequest) {
return "SelectionRequest";
}
if (type == SelectionNotify) {
return "SelectionNotify";
}
if (type == ColormapNotify) {
return "ColormapNotify";
}
if (type == ClientMessage) {
return "ClientMessage";
}
if (type == MappingNotify) {
return "MappingNotify";
}
return "Bad Event!";
}
const char *
request_code_to_name(int code)
{
if (code == X_CreateWindow) {
return "XCreateWindow";
}
if (code == X_ChangeWindowAttributes) {
return "XChangeWindowAttributes";
}
if (code == X_GetWindowAttributes) {
return "XGetWindowAttributes";
}
if (code == X_DestroyWindow) {
return "XDestroyWindow";
}
if (code == X_DestroySubwindows) {
return "XDestroySubwindows";
}
if (code == X_ChangeSaveSet) {
return "XChangeSaveSet";
}
if (code == X_ReparentWindow) {
return "XReparentWindow";
}
if (code == X_MapWindow) {
return "XMapWindow";
}
if (code == X_MapSubwindows) {
return "XMapSubwindows";
}
if (code == X_UnmapWindow) {
return "XUnmapWindow";
}
if (code == X_UnmapSubwindows) {
return "XUnmapSubwindows";
}
if (code == X_ConfigureWindow) {
return "XConfigureWindow";
}
if (code == X_CirculateWindow) {
return "XCirculateWindow";
}
if (code == X_GetGeometry) {
return "XGetGeometry";
}
if (code == X_QueryTree) {
return "XQueryTree";
}
if (code == X_InternAtom) {
return "XInternAtom";
}
if (code == X_GetAtomName) {
return "XGetAtomName";
}
if (code == X_ChangeProperty) {
return "XChangeProperty";
}
if (code == X_DeleteProperty) {
return "XDeleteProperty";
}
if (code == X_GetProperty) {
return "XGetProperty";
}
if (code == X_ListProperties) {
return "XListProperties";
}
if (code == X_SetSelectionOwner) {
return "XSetSelectionOwner";
}
if (code == X_GetSelectionOwner) {
return "XGetSelectionOwner";
}
if (code == X_ConvertSelection) {
return "XConvertSelection";
}
if (code == X_SendEvent) {
return "XSendEvent";
}
if (code == X_GrabPointer) {
return "XGrabPointer";
}
if (code == X_UngrabPointer) {
return "XUngrabPointer";
}
if (code == X_GrabButton) {
return "XGrabButton";
}
if (code == X_UngrabButton) {
return "XUngrabButton";
}
if (code == X_ChangeActivePointerGrab) {
return "XChangeActivePointerGrab";
}
if (code == X_GrabKeyboard) {
return "XGrabKeyboard";
}
if (code == X_UngrabKeyboard) {
return "XUngrabKeyboard";
}
if (code == X_GrabKey) {
return "XGrabKey";
}
if (code == X_UngrabKey) {
return "XUngrabKey";
}
if (code == X_AllowEvents) {
return "XAllowEvents";
}
if (code == X_GrabServer) {
return "XGrabServer";
}
if (code == X_UngrabServer) {
return "XUngrabServer";
}
if (code == X_QueryPointer) {
return "XQueryPointer";
}
if (code == X_GetMotionEvents) {
return "XGetMotionEvents";
}
if (code == X_TranslateCoords) {
return "XTranslateCoords";
}
if (code == X_WarpPointer) {
return "XWarpPointer";
}
if (code == X_SetInputFocus) {
return "XSetInputFocus";
}
if (code == X_GetInputFocus) {
return "XGetInputFocus";
}
if (code == X_QueryKeymap) {
return "XQueryKeymap";
}
if (code == X_OpenFont) {
return "XOpenFont";
}
if (code == X_CloseFont) {
return "XCloseFont";
}
if (code == X_QueryFont) {
return "XQueryFont";
}
if (code == X_QueryTextExtents) {
return "XQueryTextExtents";
}
if (code == X_ListFonts) {
return "XListFonts";
}
if (code == X_ListFontsWithInfo) {
return "XListFontsWithInfo";
}
if (code == X_SetFontPath) {
return "XSetFontPath";
}
if (code == X_GetFontPath) {
return "XGetFontPath";
}
if (code == X_CreatePixmap) {
return "XCreatePixmap";
}
if (code == X_FreePixmap) {
return "XFreePixmap";
}
if (code == X_CreateGC) {
return "XCreateGC";
}
if (code == X_ChangeGC) {
return "XChangeGC";
}
if (code == X_CopyGC) {
return "XCopyGC";
}
if (code == X_SetDashes) {
return "XSetDashes";
}
if (code == X_SetClipRectangles) {
return "XSetClipRectangles";
}
if (code == X_FreeGC) {
return "XFreeGC";
}
if (code == X_ClearArea) {
return "XClearArea";
}
if (code == X_CopyArea) {
return "XCopyArea";
}
if (code == X_CopyPlane) {
return "XCopyPlane";
}
if (code == X_PolyPoint) {
return "XPolyPoint";
}
if (code == X_PolyLine) {
return "XPolyLine";
}
if (code == X_PolySegment) {
return "XPolySegment";
}
if (code == X_PolyRectangle) {
return "XPolyRectangle";
}
if (code == X_PolyArc) {
return "XPolyArc";
}
if (code == X_FillPoly) {
return "XFillPoly";
}
if (code == X_PolyFillRectangle) {
return "XPolyFillRectangle";
}
if (code == X_PolyFillArc) {
return "XPolyFillArc";
}
if (code == X_PutImage) {
return "XPutImage";
}
if (code == X_GetImage) {
return "XGetImage";
}
if (code == X_PolyText8) {
return "XPolyText8";
}
if (code == X_PolyText16) {
return "XPolyText16";
}
if (code == X_ImageText8) {
return "XImageText8";
}
if (code == X_ImageText16) {
return "XImageText16";
}
if (code == X_CreateColormap) {
return "XCreateColormap";
}
if (code == X_FreeColormap) {
return "XFreeColormap";
}
if (code == X_CopyColormapAndFree) {
return "XCopyColormapAndFree";
}
if (code == X_InstallColormap) {
return "XInstallColormap";
}
if (code == X_UninstallColormap) {
return "XUninstallColormap";
}
if (code == X_ListInstalledColormaps) {
return "XListInstalledColormaps";
}
if (code == X_AllocColor) {
return "XAllocColor";
}
if (code == X_AllocNamedColor) {
return "XAllocNamedColor";
}
if (code == X_AllocColorCells) {
return "XAllocColorCells";
}
if (code == X_AllocColorPlanes) {
return "XAllocColorPlanes";
}
if (code == X_FreeColors) {
return "XFreeColors";
}
if (code == X_StoreColors) {
return "XStoreColors";
}
if (code == X_StoreNamedColor) {
return "XStoreNamedColor";
}
if (code == X_QueryColors) {
return "XQueryColors";
}
if (code == X_LookupColor) {
return "XLookupColor";
}
if (code == X_CreateCursor) {
return "XCreateCursor";
}
if (code == X_CreateGlyphCursor) {
return "XCreateGlyphCursor";
}
if (code == X_FreeCursor) {
return "XFreeCursor";
}
if (code == X_RecolorCursor) {
return "XRecolorCursor";
}
if (code == X_QueryBestSize) {
return "XQueryBestSize";
}
if (code == X_QueryExtension) {
return "XQueryExtension";
}
if (code == X_ListExtensions) {
return "XListExtensions";
}
if (code == X_ChangeKeyboardMapping) {
return "XChangeKeyboardMapping";
}
if (code == X_GetKeyboardMapping) {
return "XGetKeyboardMapping";
}
if (code == X_ChangeKeyboardControl) {
return "XChangeKeyboardControl";
}
if (code == X_GetKeyboardControl) {
return "XGetKeyboardControl";
}
if (code == X_Bell) {
return "XBell";
}
if (code == X_ChangePointerControl) {
return "XChangePointerControl";
}
if (code == X_GetPointerControl) {
return "XGetPointerControl";
}
if (code == X_SetScreenSaver) {
return "XSetScreenSaver";
}
if (code == X_GetScreenSaver) {
return "XGetScreenSaver";
}
if (code == X_ChangeHosts) {
return "XChangeHosts";
}
if (code == X_ListHosts) {
return "XListHosts";
}
if (code == X_SetAccessControl) {
return "XSetAccessControl";
}
if (code == X_SetCloseDownMode) {
return "XSetCloseDownMode";
}
if (code == X_KillClient) {
return "XKillClient";
}
if (code == X_RotateProperties) {
return "XRotateProperties";
}
if (code == X_ForceScreenSaver) {
return "XForceScreenSaver";
}
if (code == X_SetPointerMapping) {
return "XSetPointerMapping";
}
if (code == X_GetPointerMapping) {
return "XGetPointerMapping";
}
if (code == X_SetModifierMapping) {
return "XSetModifierMapping";
}
if (code == X_GetModifierMapping) {
return "XGetModifierMapping";
}
if (code == X_NoOperation) {
return "XNoOperation";
}
return "Unknown";
}
const char *
get_ctrl_char_name(char c)
{
const char *lookup[] = {
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", /* 0-7 */
"BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI", /* 8-15 */
"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", /* 16-23 */
"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US" /* 24-31 */
};
return ((c < ' ') ? (lookup[(int) c]) : (""));
}
static void
hard_exit(void)
{
#ifdef HAVE__EXIT
_exit(-1);
#elif defined(SIGKILL)
kill(cmd_pid, SIGKILL);
abort();
#else
kill(cmd_pid, 9);
abort();
#endif
}
/* Try to get a stack trace when we croak */
void
dump_stack_trace(void)
{
char cmd[256];
#ifdef GDB
struct stat st;
#endif
#ifdef NO_STACK_TRACE
return;
#endif
libast_print_error("Attempting to dump a stack trace....\n");
signal(SIGTSTP, exit); /* Don't block on tty output, just die */
#ifdef HAVE_U_STACK_TRACE
U_STACK_TRACE();
return;
#elif defined(GDB)
if (((stat(GDB_CMD_FILE, &st)) != 0) || (!S_ISREG(st.st_mode))) {
return;
}
snprintf(cmd, sizeof(cmd), GDB " -x " GDB_CMD_FILE " " APL_NAME " %d", getpid());
#elif defined(PSTACK)
snprintf(cmd, sizeof(cmd), PSTACK " %d", getpid());
#elif defined(DBX)
# ifdef _AIX
snprintf(cmd, sizeof(cmd), "/bin/echo 'where\ndetach' | " DBX " -a %d", getpid());
# elif defined(__sgi)
snprintf(cmd, sizeof(cmd), "/bin/echo 'where\ndetach' | " DBX " -p %d", getpid());
# else
snprintf(cmd, sizeof(cmd), "/bin/echo 'where\ndetach' | " DBX " %s %d", orig_argv0, getpid());
# endif
#else
libast_print_error("Your system does not support any of the methods Eterm uses. Exiting.\n");
return;
#endif
signal(SIGALRM, (eterm_sighandler_t) hard_exit);
alarm(3);
system(cmd);
}
/* signal handling, exit handler */
/*
* Catch a SIGCHLD signal and exit if the direct child has died
*/
static RETSIGTYPE
handle_child_signal(int sig)
{
int pid, save_errno = errno;
D_CMD(("Received signal %s (%d)\n", sig_to_str(sig), sig));
do {
errno = 0;
} while ((-1 == (pid = waitpid(-1, NULL, WNOHANG))) && (errno == EINTR));
D_CMD(("pid == %d, cmd_pid == %d\n", pid, cmd_pid));
/* If the child that exited is the command we spawned, or if the
child exited before fork() returned in the parent, it must be
our immediate child that exited. We exit gracefully. */
if ((cmd_pid != -1)
&& ((pid == cmd_pid)
|| ((pid == -1) && (errno == ECHILD))
|| ((pid == 0) && ((kill(cmd_pid, 0)) < 0)))) {
cmd_pid = -1;
if (BITFIELD_IS_SET(eterm_options, ETERM_OPTIONS_PAUSE)) {
paused = 1;
return;
}
exit(EXIT_SUCCESS);
}
errno = save_errno;
D_CMD(("handle_child_signal: installing signal handler\n"));
signal(SIGCHLD, handle_child_signal);
SIG_RETURN(0);
}
/* Handles signals usually sent by a user, like HUP, TERM, INT. */
static RETSIGTYPE
handle_exit_signal(int sig)
{
libast_print_error("Received terminal signal %s (%d)\n", sig_to_str(sig), sig);
signal(sig, SIG_DFL);
#ifdef UTMP_SUPPORT
privileges(INVOKE);
remove_utmp_entry();
privileges(REVERT);
#endif
D_CMD(("exit(%s)\n", sig_to_str(sig)));
exit(sig);
SIG_RETURN(0);
}
/* Handles abnormal termination signals -- mej */
static RETSIGTYPE
handle_crash(int sig)
{
libast_print_error("Received terminal signal %s (%d)\n", sig_to_str(sig), sig);
signal(sig, SIG_DFL); /* Let the OS handle recursive seg faults */
/* Lock down security so we don't write any core files as root. */
privileges(REVERT);
umask(077);
/* Make an attempt to dump a stack trace */
dump_stack_trace();
/* Exit */
exit(sig);
SIG_RETURN(0);
}
#ifdef HAVE_XRES_EXT
static RETSIGTYPE
x_resource_dump(int sig)
{
int event_base, error_base, count, i;
unsigned long bytes;
XResClient *clients = NULL;
XResType *types = NULL;
Atom pixmap_atom, gc_atom, font_atom;
pid_t my_pid;
char *title, *ptitle;
USE_VAR(sig);
my_pid = getpid();
/* Create type atoms for future use. */
pixmap_atom = XInternAtom(Xdisplay, "PIXMAP", False);
gc_atom = XInternAtom(Xdisplay, "GC", False);
font_atom = XInternAtom(Xdisplay, "FONT", False);
/* Look at what *we* think our consumption is. */
#if DEBUG >= DEBUG_MEM
if (DEBUG_LEVEL >= DEBUG_MEM) {
PIXMAP_DUMP();
GC_DUMP();
}
#endif
/* Make sure we have the extension loaded. */
if (!XResQueryExtension(Xdisplay, &event_base, &error_base)) {
fprintf(stderr, "XResource extension not available on current display.\n");
return;
}
D_X11(("Got XResource extension values: %d (0x%08x) / %d (0x%08x)\n",
event_base, event_base, error_base, error_base));
/* Get a list of X clients and find our window ID in the list. */
if (!XResQueryClients(Xdisplay, &count, &clients)) {
if (clients) {
XFree(clients);
}
D_X11((" -> Unable to query clients.\n"));
return;
}
D_X11((" -> Got %d clients.\n", count));
if (count == 0) {
D_X11((" -> Nothing to do!\n"));
return;
}
for (i = 0; i < count; i++) {
Window win;
win = clients[i].resource_base & (~clients[i].resource_mask);
D_X11(("Checking client: base %d, mask %d, window 0x%08x\n", clients[i].resource_base,
clients[i].resource_mask, win));
if ((TermWin.parent & (~clients[i].resource_mask)) == win) {
break;
}
}
if (i == count) {
D_X11((" -> No client found with window 0x%08x (0x%08x\n", TermWin.parent,
(TermWin.parent & (~clients[i].resource_mask))));
return;
}
/* Request resource info for our client ID. */
if (!XResQueryClientResources(Xdisplay, clients[i].resource_base, &count, &types)
|| !XResQueryClientPixmapBytes(Xdisplay, clients[i].resource_base, &bytes)) {
if (types) {
XFree(types);
}
D_X11((" -> Unable to query resources.\n"));
return;
}
D_X11((" -> Got %d types.\n", count));
/* Get and sanitize window title for easier identification. */
XFetchName(Xdisplay, TermWin.parent, &title);
if (title) {
for (ptitle = title; *ptitle; ptitle++) {
if (!isprint(*ptitle)) {
*ptitle = ' ';
}
}
}
for (i = 0; i < count; i++) {
if (types[i].resource_type == pixmap_atom) {
fprintf(stderr, "Process %lu, window 0x%08x (%s): %d pixmaps (%lu bytes).\n", (unsigned long) my_pid,
(unsigned int) TermWin.parent, NONULL(title), types[i].count, bytes);
} else if (types[i].resource_type == gc_atom) {
fprintf(stderr, "Process %lu, window 0x%08x (%s): %d GC's (%d bytes).\n", (unsigned long) my_pid,
(unsigned int) TermWin.parent, NONULL(title), types[i].count,
types[i].count * (sizeof(XGCValues) + sizeof(GC)));
} else if (types[i].resource_type == font_atom) {
fprintf(stderr, "Process %lu, window 0x%08x (%s): %d fonts (%d bytes).\n", (unsigned long) my_pid,
(unsigned int) TermWin.parent, NONULL(title), types[i].count,
types[i].count * (sizeof(XFontStruct) + sizeof(Font)));
}
}
XFree(clients);
XFree(types);
if (title) {
XFree(title);
}
}
#endif
void
install_handlers(void)
{
/* Ignore SIGHUP */
/* signal(SIGHUP, handle_exit_signal); */
signal(SIGHUP, SIG_IGN);
#ifndef __svr4__
signal(SIGINT, handle_exit_signal);
#endif
signal(SIGTERM, handle_exit_signal);
signal(SIGCHLD, handle_child_signal);
signal(SIGQUIT, handle_crash);
signal(SIGSEGV, handle_crash);
signal(SIGBUS, handle_crash);
signal(SIGABRT, handle_crash);
signal(SIGFPE, handle_crash);
signal(SIGILL, handle_crash);
signal(SIGSYS, handle_crash);
signal(SIGPIPE, SIG_IGN);
#ifdef HAVE_XRES_EXT
signal(SIGUSR1, x_resource_dump);
#else
signal(SIGUSR1, SIG_IGN);
#endif
}
/* Exit gracefully, clearing the utmp entry and restoring tty attributes */
void
clean_exit(void)
{
#if DEBUG >= DEBUG_MEM
if (DEBUG_LEVEL >= DEBUG_MEM) {
unsigned short i;
/* Deallocate all our crap to help find memory leaks */
selection_clear();
scr_release();
bbar_free(buttonbar);
menulist_clear(menu_list);
font_cache_clear();
eterm_font_list_clear();
# ifdef PIXMAP_SUPPORT
FOREACH_IMAGE(free_eterm_image(&(images[idx])););
# endif
for (i = 0; i < NRS_COLORS; i++) {
if (rs_color[i]) {
FREE(rs_color[i]);
}
}
spifconf_free_subsystem();
# ifdef USE_XIM
if (xim_input_context) {
XUnsetICFocus(xim_input_context);
XDestroyIC(xim_input_context);
}
if (xim_input_method) {
XCloseIM(xim_input_method);
}
# endif
XCloseDisplay(Xdisplay);
}
#endif
privileges(INVOKE);
#ifndef __CYGWIN32__
if (ttydev) {
D_CMD(("Restoring \"%s\" to mode %03o, uid %d, gid %d\n", ttydev, ttyfd_stat.st_mode, ttyfd_stat.st_uid,
ttyfd_stat.st_gid));
if (chmod(ttydev, ttyfd_stat.st_mode) != 0) {
D_UTMP(("chmod(\"%s\", %03o) failed: %s\n", ttydev, ttyfd_stat.st_mode, strerror(errno)));
}
if (chown(ttydev, ttyfd_stat.st_uid, ttyfd_stat.st_gid) != 0) {
D_UTMP(("chown(\"%s\", %d, %d) failed: %s\n", ttydev, ttyfd_stat.st_uid, ttyfd_stat.st_gid, strerror(errno)));
}
}
#endif /* __CYGWIN32__ */
#ifdef UTMP_SUPPORT
remove_utmp_entry();
#endif
privileges(REVERT);
#if DEBUG >= DEBUG_MEM
if (DEBUG_LEVEL >= DEBUG_MEM) {
MALLOC_DUMP();
PIXMAP_DUMP();
GC_DUMP();
}
#endif
PABLO_STOP_TRACING();
DPRINTF1(("Cleanup done. I am outta here!\n"));
}
/* Acquire a pseudo-teletype from the system. */
/*
* On failure, returns -1.
* On success, returns the file descriptor.
*
* If successful, ttydev and ptydev point to the names of the
* master and slave parts
*/
#ifdef __sgi
inline int sgi_get_pty(void);
inline int
sgi_get_pty(void)
{
int fd = -1;
privileges(INVOKE);
ptydev = ttydev = _getpty(&fd, O_RDWR | O_NDELAY, 0620, 0);
privileges(REVERT);
return (ptydev == NULL ? -1 : fd);
}
#endif
#ifdef HAVE_DEV_PTC
inline int aix_get_pty(void);
inline int
aix_get_pty(void)
{
int fd = -1;
if ((fd = open("/dev/ptc", O_RDWR)) < 0)
return (-1);
else
ptydev = ttydev = ttyname(fd);
return (fd);
}
#endif
#ifdef HAVE_SCO_PTYS
inline int sco_get_pty(void);
inline int
sco_get_pty(void)
{
static char pty_name[] = "/dev/ptyp??\0\0\0";
static char tty_name[] = "/dev/ttyp??\0\0\0";
int idx;
int fd = -1;
ptydev = pty_name;
ttydev = tty_name;
for (idx = 0; idx < 256; idx++) {
sprintf(ptydev, "/dev/ptyp%d", idx);
sprintf(ttydev, "/dev/ttyp%d", idx);
if (access(ttydev, F_OK) < 0) {
idx = 256;
break;
}
if ((fd = open(ptydev, O_RDWR)) >= 0) {
if (access(ttydev, R_OK | W_OK) == 0)
return (fd);
close(fd);
}
}
return (-1);
}
#endif
#ifdef HAVE_DEV_PTMX
inline int svr_get_pty(void);
inline int
svr_get_pty(void)
{
int fd = -1;
/* open the STREAMS, clone device /dev/ptmx (master pty) */
if ((fd = open("/dev/ptmx", O_RDWR)) < 0) {
return (-1);
} else {
if (grantpt(fd) != 0) {
libast_print_error("grantpt(%d) failed: %s\n", fd, strerror(errno));
return (-1);
} else if (unlockpt(fd) != 0) {
libast_print_error("unlockpt(%d) failed: %s\n", fd, strerror(errno));
return (-1);
} else {
ptydev = ttydev = ptsname(fd);
if (ttydev == NULL) {
libast_print_error("ptsname(%d) failed: %s\n", fd, strerror(errno));
return (-1);
}
}
}
return (fd);
}
#endif
#define PTYCHAR1 "pqrstuvwxyz"
#define PTYCHAR2 "0123456789abcdefghijklmnopqrstuvwxyz"
inline int gen_get_pty(void);
inline int
gen_get_pty(void)
{
static char pty_name[] = "/dev/pty??";
static char tty_name[] = "/dev/tty??";
int len = sizeof(tty_name);
char *c1, *c2;
int fd = -1;
ptydev = pty_name;
ttydev = tty_name;
for (c1 = PTYCHAR1; *c1; c1++) {
ptydev[len - 3] = ttydev[len - 3] = *c1;
for (c2 = PTYCHAR2; *c2; c2++) {
ptydev[len - 2] = ttydev[len - 2] = *c2;
if ((fd = open(ptydev, O_RDWR)) >= 0) {
if (access(ttydev, R_OK | W_OK) == 0)
return (fd);
close(fd);
}
}
}
return (-1);
}
int
get_pty(void)
{
int fd = -1;
#if defined(__sgi)
fd = sgi_get_pty();
#elif defined(HAVE_DEV_PTC)
fd = aix_get_pty();
#elif defined(HAVE_DEV_PTMX)
fd = svr_get_pty();
#elif defined(HAVE_SCO_PTYS)
fd = sco_get_pty();
#endif
/* Fall back on this method */
if (fd == -1) {
fd = gen_get_pty();
}
if (fd != -1) {
fcntl(fd, F_SETFL, O_NDELAY);
return (fd);
} else {
libast_print_error("Can't open pseudo-tty -- %s\n", strerror(errno));
return (-1);
}
}
/* establish a controlling teletype for new session */
/*
* On some systems this can be done with ioctl() but on others we
* need to re-open the slave tty.
*/
int
get_tty(void)
{
int fd;
pid_t pid;
/*
* setsid() [or setpgrp] must be before open of the terminal,
* otherwise there is no controlling terminal (Solaris 2.4, HP-UX 9)
*/
#ifndef ultrix
# ifdef NO_SETSID
pid = setpgrp(0, 0);
# else
pid = setsid();
# endif
if (pid < 0) {
D_TTYMODE(("%s: setsid() failed: %s, PID == %d\n", rs_name, strerror(errno), pid));
}
#endif /* ultrix */
privileges(INVOKE);
if (ttydev == NULL) {
libast_print_error("Slave tty device name is NULL. Failed to open slave pty.\n");
exit(EXIT_FAILURE);
} else if ((fd = open(ttydev, O_RDWR)) < 0) {
libast_print_error("Can't open slave tty %s -- %s\n", ttydev, strerror(errno));
exit(EXIT_FAILURE);
} else {
D_TTY(("Opened slave tty %s\n", ttydev));
privileges(REVERT);
}
#if defined (__svr4__)
/*
* Push STREAMS modules:
* ptem: pseudo-terminal hardware emulation module.
* ldterm: standard terminal line discipline.
* ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
*/
ioctl(fd, I_PUSH, "ptem");
ioctl(fd, I_PUSH, "ldterm");
ioctl(fd, I_PUSH, "ttcompat");
#else /* __svr4__ */
{
unsigned int mode = 0620;
gid_t gid = my_rgid;
# ifdef PTY_GRP_NAME
{
struct group *gr = getgrnam(PTY_GRP_NAME);
if (gr) {
gid = gr->gr_gid;
mode = 0620;
}
}
# endif
privileges(INVOKE);
# ifndef __CYGWIN32__
fchown(fd, my_ruid, gid); /* fail silently */
fchmod(fd, mode);
# endif
privileges(REVERT);
}
#endif /* __svr4__ */
/*
* Close all file descriptors. If only stdin/out/err are closed,
* child processes remain alive upon deletion of the window.
*/
{
unsigned short i;
unsigned long max_fds;
/* get number of available file descriptors */
#ifdef _POSIX_VERSION
max_fds = sysconf(_SC_OPEN_MAX);
#else
max_fds = getdtablesize();
#endif
D_TTY(("Closing file descriptors 0-%d.\n", max_fds));
for (i = 0; i < max_fds; i++) {
if (i != fd)
close(i);
}
D_TTY(("...closed.\n"));
}
/* Reopen stdin, stdout and stderr over the tty file descriptor */
dup(fd); /* 0: stdin */
dup(fd); /* 1: stdout */
dup(fd); /* 2: stderr */
if (fd > 2)
close(fd);
privileges(INVOKE);
#ifdef ultrix
if ((fd = open("/dev/tty", O_RDONLY)) >= 0) {
ioctl(fd, TIOCNOTTY, 0);
close(fd);
} else {
# ifdef NO_SETSID
pid = setpgrp(0, 0);
# else
pid = setsid();
# endif
if (pid < 0) {
D_TTYMODE(("%s: setsid() failed: %s, PID == %d\n", rs_name, strerror(errno), pid));
}
}
/* no error, we could run with no tty to begin with */
#else /* ultrix */
# ifdef TIOCSCTTY
ioctl(0, TIOCSCTTY, 0);
# endif
/* set process group */
# if defined (_POSIX_VERSION) || defined (__svr4__)
tcsetpgrp(0, pid);
# elif defined (TIOCSPGRP)
ioctl(0, TIOCSPGRP, &pid);
# endif
/* svr4 problems: reports no tty, no job control */
/* # if !defined (__svr4__) && defined (TIOCSPGRP) */
close(open(ttydev, O_RDWR, 0));
/* # endif */
#endif /* ultrix */
privileges(REVERT);
D_TTY(("Returning fd == %d\n", fd));
return (fd);
}
/* debug_ttymode() */
#if DEBUG >= DEBUG_TTYMODE && defined(HAVE_TERMIOS_H)
/* cpp token stringize doesn't work on all machines <sigh> */
# define SHOW_TTY_FLAG(flag,name) do { \
if ((ttymode->c_iflag) & (flag)) { \
fprintf(stderr, "+%s ", name); \
} else { \
fprintf(stderr, "-%s ", name); \
} \
} while (0)
# define SHOW_CONT_CHAR(entry, name) fprintf(stderr, "%s=%#3o ", name, ttymode->c_cc[entry])
static void
debug_ttymode(ttymode_t *ttymode)
{
/* c_iflag bits */
fprintf(stderr, "Input flags: ");
SHOW_TTY_FLAG(IGNBRK, "IGNBRK");
SHOW_TTY_FLAG(BRKINT, "BRKINT");
SHOW_TTY_FLAG(IGNPAR, "IGNPAR");
SHOW_TTY_FLAG(PARMRK, "PARMRK");
SHOW_TTY_FLAG(INPCK, "INPCK");
SHOW_TTY_FLAG(ISTRIP, "ISTRIP");
SHOW_TTY_FLAG(INLCR, "INLCR");
SHOW_TTY_FLAG(IGNCR, "IGNCR");
SHOW_TTY_FLAG(ICRNL, "ICRNL");
SHOW_TTY_FLAG(IXON, "IXON");
SHOW_TTY_FLAG(IXOFF, "IXOFF");
# ifdef IUCLC
SHOW_TTY_FLAG(IUCLC, "IUCLC");
# endif
# ifdef IXANY
SHOW_TTY_FLAG(IXANY, "IXANY");
# endif
# ifdef IMAXBEL
SHOW_TTY_FLAG(IMAXBEL, "IMAXBEL");
# endif
fprintf(stderr, "\n");
fprintf(stderr, "Control character mappings: ");
SHOW_CONT_CHAR(VINTR, "VINTR");
SHOW_CONT_CHAR(VQUIT, "VQUIT");
SHOW_CONT_CHAR(VERASE, "VERASE");
SHOW_CONT_CHAR(VKILL, "VKILL");
SHOW_CONT_CHAR(VEOF, "VEOF");
SHOW_CONT_CHAR(VEOL, "VEOL");
# ifdef VEOL2
SHOW_CONT_CHAR(VEOL2, "VEOL2");
# endif
# ifdef VSWTC
SHOW_CONT_CHAR(VSWTC, "VSWTC");
# endif
# ifdef VSWTCH
SHOW_CONT_CHAR(VSWTCH, "VSWTCH");
# endif
SHOW_CONT_CHAR(VSTART, "VSTART");
SHOW_CONT_CHAR(VSTOP, "VSTOP");
SHOW_CONT_CHAR(VSUSP, "VSUSP");
# ifdef VDSUSP
SHOW_CONT_CHAR(VDSUSP, "VDSUSP");
# endif
# ifdef VREPRINT
SHOW_CONT_CHAR(VREPRINT, "VREPRINT");
# endif
# ifdef VDISCRD
SHOW_CONT_CHAR(VDISCRD, "VDISCRD");
# endif
# ifdef VWERSE
SHOW_CONT_CHAR(VWERSE, "VWERSE");
# endif
# ifdef VLNEXT
SHOW_CONT_CHAR(VLNEXT, "VLNEXT");
# endif
fprintf(stderr, "\n\n");
}
# undef SHOW_TTY_FLAG
# undef SHOW_CONT_CHAR
#endif /* DEBUG_TTYMODE */
/* get_ttymode() */
static void
get_ttymode(ttymode_t *tio)
{
#ifdef HAVE_TERMIOS_H
/*
* standard System V termios interface
*/
if (GET_TERMIOS(0, tio) < 0) {
/* return error - use system defaults */
tio->c_cc[VINTR] = CINTR;
tio->c_cc[VQUIT] = CQUIT;
tio->c_cc[VERASE] = CERASE;
tio->c_cc[VKILL] = CKILL;
tio->c_cc[VSTART] = CSTART;
tio->c_cc[VSTOP] = CSTOP;
tio->c_cc[VSUSP] = CSUSP;
# ifdef VDSUSP
tio->c_cc[VDSUSP] = CDSUSP;
# endif
# ifdef VREPRINT
tio->c_cc[VREPRINT] = CRPRNT;
# endif
# ifdef VDISCRD
tio->c_cc[VDISCRD] = CFLUSH;
# endif
# ifdef VWERSE
tio->c_cc[VWERSE] = CWERASE;
# endif
# ifdef VLNEXT
tio->c_cc[VLNEXT] = CLNEXT;
# endif
# ifdef VSTATUS
tio->c_cc[VSTATUS] = CSTATUS;
# endif
}
tio->c_cc[VEOF] = CEOF;
tio->c_cc[VEOL] = VDISABLE;
# ifdef VEOL2
tio->c_cc[VEOL2] = VDISABLE;
# endif
# ifdef VSWTC
tio->c_cc[VSWTC] = VDISABLE;
# endif
# ifdef VSWTCH
tio->c_cc[VSWTCH] = VDISABLE;
# endif
# if VMIN != VEOF
tio->c_cc[VMIN] = 1;
# endif
# if VTIME != VEOL
tio->c_cc[VTIME] = 0;
# endif
/* input modes */
tio->c_iflag = (BRKINT | IGNPAR | ICRNL | IXON
# ifdef IMAXBEL
| IMAXBEL
# endif
);
/* output modes */
tio->c_oflag = (OPOST | ONLCR);
/* control modes */
tio->c_cflag = (CS8 | CREAD);
/* line discipline modes */
tio->c_lflag = (ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK
# if defined (ECHOCTL) && defined (ECHOKE)
| ECHOCTL | ECHOKE
# endif
);
#if defined(FORCE_BACKSPACE) && 0
PrivMode(1, PrivMode_BackSpace);
tio->c_cc[VERASE] = '\b'; /* force ^H for stty setting... */
SET_TERMIOS(0, tio); /* ...and make it stick -- casey */
#elif defined(FORCE_DELETE) && 0
PrivMode(0, PrivMode_BackSpace);
tio->c_cc[VERASE] = 0x7f; /* force ^? for stty setting... */
SET_TERMIOS(0, tio); /* ...and make it stick -- casey */
#else
PrivMode((tio->c_cc[VERASE] == '\b'), PrivMode_BackSpace);
#endif
#else /* HAVE_TERMIOS_H */
/*
* sgtty interface
*/
/* get parameters -- gtty */
if (ioctl(0, TIOCGETP, &(tio->sg)) < 0) {
tio->sg.sg_erase = CERASE; /* ^H */
tio->sg.sg_kill = CKILL; /* ^U */
}
tio->sg.sg_flags = (CRMOD | ECHO | EVENP | ODDP);
/* get special characters */
if (ioctl(0, TIOCGETC, &(tio->tc)) < 0) {
tio->tc.t_intrc = CINTR; /* ^C */
tio->tc.t_quitc = CQUIT; /* ^\ */
tio->tc.t_startc = CSTART; /* ^Q */
tio->tc.t_stopc = CSTOP; /* ^S */
tio->tc.t_eofc = CEOF; /* ^D */
tio->tc.t_brkc = -1;
}
/* get local special chars */
if (ioctl(0, TIOCGLTC, &(tio->lc)) < 0) {
tio->lc.t_suspc = CSUSP; /* ^Z */
tio->lc.t_dsuspc = CDSUSP; /* ^Y */
tio->lc.t_rprntc = CRPRNT; /* ^R */
tio->lc.t_flushc = CFLUSH; /* ^O */
tio->lc.t_werasc = CWERASE; /* ^W */
tio->lc.t_lnextc = CLNEXT; /* ^V */
}
/* get line discipline */
ioctl(0, TIOCGETD, &(tio->line));
# ifdef NTTYDISC
tio->line = NTTYDISC;
# endif /* NTTYDISC */
tio->local = (LCRTBS | LCRTERA | LCTLECH | LPASS8 | LCRTKIL);
# ifdef FORCE_BACKSPACE
PrivMode(1, PrivMode_BackSpace);
tio->sg.sg_erase = '\b';
SET_TTYMODE(0, tio);
# elif defined (FORCE_DELETE)
PrivMode(0, PrivMode_BackSpace);
tio->sg.sg_erase = 0x7f;
SET_TTYMODE(0, tio);
# else
PrivMode((tio->sg.sg_erase == '\b'), PrivMode_BackSpace);
# endif
#endif /* HAVE_TERMIOS_H */
}
/* Xlocale */
XFontSet
create_fontset(const char *font1, const char *font2)
{
XFontSet fontset = 0;
char *fontname, **ml, *ds;
int mc;
/*const char fs_base[] = ",-misc-fixed-*-r-*-*-*-120-*-*-*-*-*-*,*";*/
ASSERT_RVAL(font1 != NULL, (XFontSet) 0);
if (font2) {
fontname = MALLOC(strlen(font1) + strlen(font2) /*+ sizeof(fs_base)*/ + 2);
if (fontname) {
strcpy(fontname, font1);
strcat(fontname, ",");
strcat(fontname, font2);
/*strcat(fontname, fs_base);*/
}
} else {
fontname = MALLOC(strlen(font1) /*+ sizeof(fs_base)*/ + 1);
if (fontname) {
strcpy(fontname, font1);
/*strcat(fontname, fs_base);*/
}
}
if (fontname) {
setlocale(LC_ALL, "");
fontset = XCreateFontSet(Xdisplay, fontname, &ml, &mc, NULL);
D_FONT(("Created fontset from %s, %d missing charsets (\"%s\").\n", fontname, mc,
((mc > 0) ? (ml[0]) : ("N/A"))));
FREE(fontname);
if (mc) {
XFreeStringList(ml);
/*fontset = 0;*/
}
}
return fontset;
}
#if defined(USE_XIM) || defined(MULTI_CHARSET)
#ifdef USE_XIM
static int xim_real_init(void);
# ifdef USE_X11R6_XIM
static void xim_destroy_cb(XIM xim, XPointer client_data, XPointer call_data);
static void xim_instantiate_cb(Display * display, XPointer client_data, XPointer call_data);
# endif
#endif
void
init_locale(void)
{
char *locale = NULL;
locale = setlocale(LC_ALL, "");
XSetLocaleModifiers("");
TermWin.fontset = (XFontSet) 0;
if ((locale == NULL) || (!XSupportsLocale())) {
libast_print_warning("Locale not supported; defaulting to portable \"C\" locale.\n");
locale = setlocale(LC_ALL, "C");
XSetLocaleModifiers("");
REQUIRE(locale);
REQUIRE(XSupportsLocale());
} else {
#ifdef USE_XIM
#ifdef MULTI_CHARSET
TermWin.fontset = create_fontset(etfonts[def_font_idx], etmfonts[def_font_idx]);
#else
TermWin.fontset = create_fontset(etfonts[def_font_idx], "-misc-fixed-medium-r-semicondensed--13-*-75-*-c-*-iso10646-1");
#endif
if ((TermWin.fontset == (XFontSet) 0) || (xim_real_init() != -1)) {
return;
}
# ifdef USE_X11R6_XIM
XRegisterIMInstantiateCallback(Xdisplay, NULL, NULL, NULL, xim_instantiate_cb, NULL);
# endif
#endif
}
}
#endif /* USE_XIM || MULTI_CHARSET */
#ifdef USE_XIM
static void
xim_set_size(XRectangle * size)
{
size->x = TermWin.internalBorder;
size->y = TermWin.internalBorder + bbar_calc_docked_height(BBAR_DOCKED_TOP);
size->width = Width2Pixel(TERM_WINDOW_GET_COLS());
size->height = Height2Pixel(TERM_WINDOW_GET_ROWS());
}
static void
xim_set_color(unsigned long *fg, unsigned long *bg)
{
*fg = PixColors[fgColor];
*bg = PixColors[bgColor];
}
static void
xim_send_spot(void)
{
XPoint spot;
static XPoint oldSpot = { -1, -1 };
XVaNestedList preedit_attr;
if (xim_input_context == NULL) {
return;
}
if (xim_input_style & XIMPreeditPosition) {
xim_get_position(&spot);
if (spot.x != oldSpot.x || spot.y != oldSpot.y) {
oldSpot.x = spot.x;
oldSpot.y = spot.y;
preedit_attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
XSetICValues(xim_input_context, XNPreeditAttributes, preedit_attr, NULL);
XFree(preedit_attr);
}
}
}
static void
xim_get_area(XRectangle * preedit_rect, XRectangle * status_rect, XRectangle * needed_rect)
{
preedit_rect->x = needed_rect->width + (scrollbar_is_visible()
&& !(BITFIELD_IS_SET(eterm_options, ETERM_OPTIONS_SCROLLBAR_RIGHT))
? (scrollbar_trough_width()) : (0));
preedit_rect->y = Height2Pixel(TERM_WINDOW_GET_ROWS() - 1);
preedit_rect->width =
Width2Pixel(TERM_WINDOW_GET_COLS() + 1) - needed_rect->width +
(!(BITFIELD_IS_SET(eterm_options, ETERM_OPTIONS_SCROLLBAR_RIGHT)) ? (scrollbar_trough_width()) : 0);
preedit_rect->height = Height2Pixel(1);
status_rect->x = (scrollbar_is_visible()
&& !(BITFIELD_IS_SET(eterm_options, ETERM_OPTIONS_SCROLLBAR_RIGHT))) ? (scrollbar_trough_width()) : 0;
status_rect->y = Height2Pixel(TERM_WINDOW_GET_ROWS() - 1);
status_rect->width = needed_rect->width ? needed_rect->width : Width2Pixel(TERM_WINDOW_GET_COLS() + 1);
status_rect->height = Height2Pixel(1);
}
#ifdef USE_X11R6_XIM
static void
xim_destroy_cb(XIM xim, XPointer client_data, XPointer call_data)
{
xim_input_context = NULL;
xim_input_method = NULL;
XRegisterIMInstantiateCallback(Xdisplay, NULL, NULL, NULL, xim_instantiate_cb, NULL);
xim = NULL;
client_data = call_data = (XPointer) 0;
}
static void
xim_instantiate_cb(Display * display, XPointer client_data, XPointer call_data)
{
xim_real_init();
if (xim_input_context) {
XUnregisterIMInstantiateCallback(Xdisplay, NULL, NULL, NULL, xim_instantiate_cb, NULL);
}
display = NULL;
client_data = call_data = (XPointer) 0;
}
#endif
static int
xim_real_init(void)
{
char *p, *s, buf[64], tmp[1024];
char *end, *next_s;
XIMStyles *xim_styles = NULL;
int found;
XPoint spot;
XRectangle rect, status_rect, needed_rect;
unsigned long fg, bg;
XVaNestedList preedit_attr = NULL;
XVaNestedList status_attr = NULL;
REQUIRE_RVAL(xim_input_context == NULL, -1);
xim_input_style = 0;
if (rs_input_method && *rs_input_method) {
strncpy(tmp, rs_input_method, sizeof(tmp) - 1);
for (s = tmp; *s; s = next_s + 1) {
for (; *s && isspace(*s); s++);
if (!*s) {
break;
}
for (end = s; (*end && (*end != ',')); end++);
for (next_s = end--; ((end >= s) && isspace(*end)); end--);
*(end + 1) = '\0';
if (*s) {
snprintf(buf, sizeof(buf), "@im=%s", s);
if (((p = XSetLocaleModifiers(buf)) != NULL) && (*p)
&& ((xim_input_method = XOpenIM(Xdisplay, NULL, NULL, NULL)) != NULL)) {
break;
}
}
if (!*next_s) {
break;
}
}
}
/* try with XMODIFIERS env. var. */
if (xim_input_method == NULL && getenv("XMODIFIERS") && (p = XSetLocaleModifiers("")) != NULL && *p) {
xim_input_method = XOpenIM(Xdisplay, NULL, NULL, NULL);
}
/* try with no modifiers base */
if (xim_input_method == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL && *p) {
xim_input_method = XOpenIM(Xdisplay, NULL, NULL, NULL);
}
if (xim_input_method == NULL) {
xim_input_method = XOpenIM(Xdisplay, NULL, NULL, NULL);
}
if (xim_input_method == NULL) {
return -1;
}
#ifdef USE_X11R6_XIM
{
XIMCallback destroy_cb;
destroy_cb.callback = xim_destroy_cb;
destroy_cb.client_data = NULL;
if (XSetIMValues(xim_input_method, XNDestroyCallback, &destroy_cb, NULL)) {
libast_print_error("Could not set destroy callback to IM\n");
}
}
#endif
if ((XGetIMValues(xim_input_method, XNQueryInputStyle, &xim_styles, NULL)) || (!xim_styles)) {
libast_print_error("input method doesn't support any style\n");
XCloseIM(xim_input_method);
return -1;
}
strncpy(tmp, (rs_preedit_type ? rs_preedit_type : "OverTheSpot,OffTheSpot,Root"), sizeof(tmp) - 1);
for (found = 0, s = tmp; *s && !found; s = next_s + 1) {
unsigned short i;
for (; *s && isspace(*s); s++);
if (!*s) {
break;
}
for (end = s; (*end && (*end != ',')); end++);
for (next_s = end--; ((end >= s) && isspace(*end)); end--);
*(end + 1) = '\0';
if (!strcmp(s, "OverTheSpot")) {
xim_input_style = (XIMPreeditPosition | XIMStatusNothing);
} else if (!strcmp(s, "OffTheSpot")) {
xim_input_style = (XIMPreeditArea | XIMStatusArea);
} else if (!strcmp(s, "Root")) {
xim_input_style = (XIMPreeditNothing | XIMStatusNothing);
}
for (i = 0; i < xim_styles->count_styles; i++) {
if (xim_input_style == xim_styles->supported_styles[i]) {
found = 1;
break;
}
}
}
XFree(xim_styles);
if (found == 0) {
libast_print_error("input method doesn't support my preedit type\n");
XCloseIM(xim_input_method);
return -1;
}
if ((xim_input_style != (XIMPreeditNothing | XIMStatusNothing))
&& (xim_input_style != (XIMPreeditArea | XIMStatusArea))
&& (xim_input_style != (XIMPreeditPosition | XIMStatusNothing))) {
libast_print_error("This program does not support the preedit type\n");
XCloseIM(xim_input_method);
return -1;
}
if (xim_input_style & XIMPreeditPosition) {
xim_set_size(&rect);
xim_get_position(&spot);
xim_set_color(&fg, &bg);
preedit_attr =
XVaCreateNestedList(0, XNArea, &rect, XNSpotLocation, &spot, XNForeground, fg, XNBackground, bg, XNFontSet,
TermWin.fontset, NULL);
} else if (xim_input_style & XIMPreeditArea) {
xim_set_color(&fg, &bg);
/* The necessary width of preedit area is unknown until create input context. */
needed_rect.width = 0;
xim_get_area(&rect, &status_rect, &needed_rect);
preedit_attr = XVaCreateNestedList(0, XNArea, &rect, XNForeground, fg, XNBackground, bg, XNFontSet, TermWin.fontset, NULL);
status_attr =
XVaCreateNestedList(0, XNArea, &status_rect, XNForeground, fg, XNBackground, bg, XNFontSet, TermWin.fontset, NULL);
}
xim_input_context =
XCreateIC(xim_input_method, XNInputStyle, xim_input_style, XNClientWindow, TermWin.parent, XNFocusWindow, TermWin.parent,
preedit_attr ? XNPreeditAttributes : NULL, preedit_attr, status_attr ? XNStatusAttributes : NULL, status_attr,
NULL);
if (preedit_attr) {
XFree(preedit_attr);
}
if (status_attr) {
XFree(status_attr);
}
if (xim_input_context == NULL) {
libast_print_error("Failed to create input context\n");
XCloseIM(xim_input_method);
return -1;
}
if (xim_input_style & XIMPreeditArea)
xim_set_status_position();
return 0;
}
void
xim_set_status_position(void)
{
XRectangle preedit_rect, status_rect, *needed_rect, rect;
XVaNestedList preedit_attr, status_attr;
XPoint spot;
REQUIRE(xim_input_context != NULL);
if (xim_input_style & XIMPreeditPosition) {
xim_set_size(&rect);
xim_get_position(&spot);
preedit_attr = XVaCreateNestedList(0, XNArea, &rect, XNSpotLocation, &spot, NULL);
XSetICValues(xim_input_context, XNPreeditAttributes, preedit_attr, NULL);
XFree(preedit_attr);
} else if (xim_input_style & XIMPreeditArea) {
/* Getting the necessary width of preedit area */
status_attr = XVaCreateNestedList(0, XNAreaNeeded, &needed_rect, NULL);
XGetICValues(xim_input_context, XNStatusAttributes, status_attr, NULL);
XFree(status_attr);
xim_get_area(&preedit_rect, &status_rect, needed_rect);
preedit_attr = XVaCreateNestedList(0, XNArea, &preedit_rect, NULL);
status_attr = XVaCreateNestedList(0, XNArea, &status_rect, NULL);
XSetICValues(xim_input_context, XNPreeditAttributes, preedit_attr, XNStatusAttributes, status_attr, NULL);
XFree(preedit_attr);
XFree(status_attr);
}
}
void
xim_set_fontset(void)
{
XVaNestedList preedit_attr = NULL;
XVaNestedList status_attr = NULL;
REQUIRE(xim_input_context != NULL);
if (xim_input_style & XIMStatusArea) {
status_attr = XVaCreateNestedList(0, XNFontSet, TermWin.fontset, NULL);
}
if (xim_input_style & (XIMPreeditArea | XIMPreeditPosition)) {
preedit_attr = XVaCreateNestedList(0, XNFontSet, TermWin.fontset, NULL);
}
if (status_attr && preedit_attr) {
XSetICValues(xim_input_context, XNPreeditAttributes, preedit_attr, XNStatusAttributes, status_attr, NULL);
} else if (preedit_attr) {
XSetICValues(xim_input_context, XNPreeditAttributes, preedit_attr, NULL);
} else if (status_attr) {
XSetICValues(xim_input_context, XNStatusAttributes, status_attr, NULL);
}
if (preedit_attr) {
XFree(preedit_attr);
}
if (status_attr) {
XFree(status_attr);
}
}
#endif /* USE_XIM */
/* run_command() */
/*
* Run the command in a subprocess and return a file descriptor for the
* master end of the pseudo-teletype pair with the command talking to
* the slave.
*/
int
run_command(char **argv)
{
ttymode_t tio;
int ptyfd;
/* Save and then give up any super-user privileges */
privileges(IGNORE);
ptyfd = get_pty();
if (ptyfd < 0)
return (-1);
AT_LEAST(num_fds, ((unsigned int) (ptyfd + 1)));
/* store original tty status for restoration clean_exit() -- rgg 04/12/95 */
lstat(ttydev, &ttyfd_stat);
D_CMD(("Original settings of %s are mode %o, uid %d, gid %d\n", ttydev, ttyfd_stat.st_mode, ttyfd_stat.st_uid,
ttyfd_stat.st_gid));
/* install exit handler for cleanup */
#ifdef HAVE_ATEXIT
atexit(clean_exit);
#else
# if defined (__sun__)
on_exit(clean_exit, NULL); /* non-ANSI exit handler */
# else
libast_print_error("no atexit(), UTMP entries can't be cleaned\n");
# endif
#endif
/*
* get tty settings before fork()
* and make a reasonable guess at the value for BackSpace
*/
get_ttymode(&tio);
/* add Backspace value */
SavedModes |= (PrivateModes & PrivMode_BackSpace);
/* add value for scrollbar */
if (scrollbar_is_visible()) {
PrivateModes |= PrivMode_scrollbar;
SavedModes |= PrivMode_scrollbar;
}
tt_winsize(ptyfd);
#if DEBUG >= DEBUG_TTYMODE && defined(HAVE_TERMIOS_H)
if (DEBUG_LEVEL >= DEBUG_TTYMODE) {
debug_ttymode(&tio);
}
#endif
D_CMD(("Forking\n"));
cmd_pid = fork();
D_CMD(("After fork(), cmd_pid == %d\n", cmd_pid));
if (cmd_pid < 0) {
libast_print_error("fork(): %s\n", strerror(errno));
return (-1);
}
if (cmd_pid == 0) {
/* Child process. Reset the signal handlers right away. */
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
signal(SIGCHLD, SIG_DFL);
signal(SIGSEGV, SIG_DFL);
signal(SIGBUS, SIG_DFL);
signal(SIGABRT, SIG_DFL);
signal(SIGFPE, SIG_DFL);
signal(SIGILL, SIG_DFL);
signal(SIGSYS, SIG_DFL);
signal(SIGALRM, SIG_DFL);
#ifdef SIGTSTP
signal(SIGTSTP, SIG_IGN);
signal(SIGTTIN, SIG_IGN);
signal(SIGTTOU, SIG_IGN);
#endif
#ifdef HAVE_UNSETENV
unsetenv("LINES");
unsetenv("COLUMNS");
unsetenv("TERMCAP");
#endif
DEBUG_LEVEL = 0;
get_tty();
SET_TTYMODE(0, &tio);
#if 0
if (TermWin.screen_mode != NS_MODE_NONE) {
tt_winsize(0);
}
#endif
/* become virtual console, fail silently */
if (BITFIELD_IS_SET(vt_options, VT_OPTIONS_CONSOLE)) {
int fd = 1;
privileges(INVOKE);
#ifdef SRIOCSREDIR
fd = open(CONSOLE, O_WRONLY);
if (fd < 0 || ioctl(fd, SRIOCSREDIR, 0) < 0) {
if (fd >= 0)
close(fd);
}
#elif defined(TIOCCONS)
ioctl(0, TIOCCONS, &fd);
#endif /* SRIOCSREDIR */
privileges(REVERT);
}
/* Permanently revoke all privileges for the child process.
Root shells for everyone are tres uncool.... ;^) -- mej */
#ifdef _HPUX_SOURCE
setresuid(my_ruid, my_ruid, my_euid);
setresgid(my_rgid, my_rgid, my_egid);
#else
/* No special treatment is needed for systems with saved uids/gids,
because the exec*() calls reset the saved uid/gid to the
effective uid/gid -- mej */
# ifndef __CYGWIN32__
setregid(my_rgid, my_rgid);
setreuid(my_ruid, my_ruid);
# endif /* __CYGWIN32__ */
#endif /* _HPUX_SOURCE */
D_UTMP(("Child process reset\n"));
my_euid = my_ruid;
my_egid = my_rgid;
#ifdef HAVE_USLEEP
usleep(10); /* Attempt to force a context switch so that the parent runs before us. */
#else
sleep(1); /* ugliness */
#endif
D_CMD(("[%d] About to spawn shell\n", getpid()));
if (chdir(initial_dir)) {
libast_print_warning("Unable to chdir to \"%s\" -- %s\n", initial_dir, strerror(errno));
}
if (argv != NULL) {
#if DEBUG >= DEBUG_CMD
if (DEBUG_LEVEL >= DEBUG_CMD) {
int i;
for (i = 0; argv[i]; i++) {
DPRINTF(("argv[%d] = \"%s\"\n", i, argv[i]));
}
}
#endif
D_CMD(("[%d] execvp(\"%s\", %8p) is next. I'm outta here!\n", getpid(), NONULL(argv[0]), argv));
execvp(argv[0], argv);
libast_print_error("execvp() failed, cannot execute \"%s\": %s\n", argv[0], strerror(errno));
} else {
const char *argv0, *shell;
if ((shell = getenv("SHELL")) == NULL || *shell == '\0')
shell = "/bin/sh";
argv0 = my_basename(shell);
if (BITFIELD_IS_SET(eterm_options, ETERM_OPTIONS_LOGIN_SHELL)) {
char *p = MALLOC(strlen(argv0) + 2);
p[0] = '-';
strcpy(&p[1], argv0);
argv0 = p;
}
execlp(shell, argv0, NULL);
libast_print_error("execlp() failed, cannot execute \"%s\": %s\n", shell, strerror(errno));
}
sleep(3); /* Sleep to make sure fork() returns in the parent, and so user can read error message */
exit(EXIT_FAILURE);
}
#ifdef UTMP_SUPPORT
privileges(RESTORE);
if (BITFIELD_IS_SET(eterm_options, ETERM_OPTIONS_WRITE_UTMP)) {
add_utmp_entry(ttydev, display_name, ptyfd);
}
privileges(IGNORE);
#endif
D_CMD(("Returning ptyfd == %d\n", ptyfd));
return (ptyfd);
}
#ifdef ESCREEN
/***************************************************************************/
/* Escreen: callbacks */
/***********************/
static int
set_scroll_x(void *xd, int x)
{
USE_VAR(xd);
D_ESCREEN(("%d\n", x));
return NS_FAIL;
}
static int
set_scroll_y(void *xd, int y)
{
USE_VAR(xd);