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sh.c
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sh.c
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/*
* sh.c: Main shell routines
*/
/*-
* Copyright (c) 1980, 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#define EXTERN /* Intern */
#include "sh.h"
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1991 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#include "tc.h"
#include "ed.h"
#include "tw.h"
extern int MapsAreInited;
extern int NLSMapsAreInited;
/*
* C Shell
*
* Bill Joy, UC Berkeley, California, USA
* October 1978, May 1980
*
* Jim Kulp, IIASA, Laxenburg, Austria
* April 1980
*
* Filename recognition added:
* Ken Greer, Ind. Consultant, Palo Alto CA
* October 1983.
*
* Karl Kleinpaste, Computer Consoles, Inc.
* Added precmd, periodic/tperiod, prompt changes,
* directory stack hack, and login watch.
* Sometime March 1983 - Feb 1984.
*
* Added scheduled commands, including the "sched" command,
* plus the call to sched_run near the precmd et al
* routines.
* Upgraded scheduled events for running events while
* sitting idle at command input.
*
* Paul Placeway, Ohio State
* added stuff for running with twenex/inputl 9 Oct 1984.
*
* ported to Apple Unix (TM) (OREO) 26 -- 29 Jun 1987
*/
jmp_buf_t reslab IZERO_STRUCT;
struct wordent paraml IZERO_STRUCT;
static const char tcshstr[] = "tcsh";
struct sigaction parintr; /* Parents interrupt catch */
struct sigaction parterm; /* Parents terminate catch */
#ifdef TESLA
int do_logout = 0;
#endif /* TESLA */
int use_fork = 0; /* use fork() instead of vfork()? */
/*
* Magic pointer values. Used to specify other invalid conditions aside
* from null.
*/
static Char INVCHAR;
Char *INVPTR = &INVCHAR;
Char **INVPPTR = &INVPTR;
static int fast = 0;
static int mflag = 0;
static int prompt = 1;
int enterhist = 0;
int tellwhat = 0;
time_t t_period;
Char *ffile = NULL;
int dolzero = 0;
int insource = 0;
int exitset = 0;
static time_t chktim; /* Time mail last checked */
char *progname;
int tcsh;
/*
* This preserves the input state of the shell. It is used by
* st_save and st_restore to manupulate shell state.
*/
struct saved_state {
int insource;
int OLDSTD;
int SHIN;
int SHOUT;
int SHDIAG;
int intty;
struct whyle *whyles;
Char *gointr;
Char *arginp;
Char *evalp;
Char **evalvec;
Char *alvecp;
Char **alvec;
int onelflg;
int enterhist;
Char **argv;
Char **av;
Char HIST;
int cantell;
struct Bin B;
int justpr;
};
static int srccat (Char *, Char *);
#ifndef WINNT_NATIVE
static int srcfile (const char *, int, int, Char **);
#else
int srcfile (const char *, int, int, Char **);
#endif /*WINNT_NATIVE*/
static void srcunit (int, int, int, Char **);
static void mailchk (void);
#ifndef _PATH_DEFPATH
static Char **defaultpath (void);
#endif
static void record (void);
static void st_save (struct saved_state *, int, int,
Char **, Char **);
static void st_restore (void *);
int main (int, char **);
#ifndef LOCALEDIR
#define LOCALEDIR "/usr/share/locale"
#endif
#ifdef NLS_CATALOGS
static void
add_localedir_to_nlspath(const char *path)
{
static const char msgs_LOC[] = "/%L/LC_MESSAGES/%N.cat";
static const char msgs_lang[] = "/%l/LC_MESSAGES/%N.cat";
char *old;
char *new, *new_p;
size_t len;
int add_LOC = 1;
int add_lang = 1;
char trypath[MAXPATHLEN];
struct stat st;
if (path == NULL)
return;
(void) xsnprintf(trypath, sizeof(trypath), "%s/C/LC_MESSAGES/tcsh.cat",
path);
if (stat(trypath, &st) == -1)
return;
if ((old = getenv("NLSPATH")) != NULL)
len = strlen(old) + 1; /* don't forget the colon. */
else
len = 0;
len += 2 * strlen(path) +
sizeof(msgs_LOC) + sizeof(msgs_lang); /* includes the extra colon */
new = new_p = xcalloc(len, 1);
if (old != NULL) {
size_t pathlen = strlen(path);
char *old_p;
(void) xsnprintf(new_p, len, "%s", old);
new_p += strlen(new_p);
len -= new_p - new;
/* Check if the paths we try to add are already present in NLSPATH.
If so, note it by setting the appropriate flag to 0. */
for (old_p = old; old_p; old_p = strchr(old_p, ':'),
old_p = old_p ? old_p + 1 : NULL) {
if (strncmp(old_p, path, pathlen) != 0)
continue;
if (strncmp(old_p + pathlen, msgs_LOC, sizeof(msgs_LOC) - 1) == 0)
add_LOC = 0;
else if (strncmp(old_p + pathlen, msgs_lang,
sizeof(msgs_lang) - 1) == 0)
add_lang = 0;
}
}
/* Add the message catalog paths not already present to NLSPATH. */
if (add_LOC || add_lang)
(void) xsnprintf(new_p, len, "%s%s%s%s%s%s",
old ? ":" : "",
add_LOC ? path : "", add_LOC ? msgs_LOC : "",
add_LOC && add_lang ? ":" : "",
add_lang ? path : "", add_lang ? msgs_lang : "");
tsetenv(STRNLSPATH, str2short(new));
free(new);
}
#endif
int
main(int argc, char **argv)
{
int batch = 0;
volatile int nexececho = 0;
int nofile = 0;
volatile int nverbose = 0;
volatile int rdirs = 0;
volatile int exitcode = 0;
int quitit = 0;
Char *cp;
#ifdef AUTOLOGOUT
Char *cp2;
#endif
char *tcp, *ttyn;
int f, reenter;
char **tempv;
static const char *targinp = NULL;
int osetintr;
struct sigaction oparintr;
#ifdef WINNT_NATIVE
nt_init();
#endif /* WINNT_NATIVE */
(void)memset(&reslab, 0, sizeof(reslab));
#if defined(NLS_CATALOGS) && defined(LC_MESSAGES)
(void) setlocale(LC_MESSAGES, "");
#endif /* NLS_CATALOGS && LC_MESSAGES */
#ifdef NLS
# ifdef LC_CTYPE
(void) setlocale(LC_CTYPE, ""); /* for iscntrl */
# endif /* LC_CTYPE */
#endif /* NLS */
STR_environ = blk2short(environ);
environ = short2blk(STR_environ); /* So that we can free it */
#ifdef NLS_CATALOGS
add_localedir_to_nlspath(LOCALEDIR);
#endif
nlsinit();
initlex(¶ml);
#ifdef MALLOC_TRACE
mal_setstatsfile(fdopen(dmove(xopen("/tmp/tcsh.trace",
O_WRONLY|O_CREAT|O_LARGEFILE, 0666), 25), "w"));
mal_trace(1);
#endif /* MALLOC_TRACE */
#if !(defined(BSDTIMES) || defined(_SEQUENT_)) && defined(POSIX)
# ifdef _SC_CLK_TCK
clk_tck = (clock_t) sysconf(_SC_CLK_TCK);
# else /* ! _SC_CLK_TCK */
# ifdef CLK_TCK
clk_tck = CLK_TCK;
# else /* !CLK_TCK */
clk_tck = HZ;
# endif /* CLK_TCK */
# endif /* _SC_CLK_TCK */
#endif /* !BSDTIMES && POSIX */
settimes(); /* Immed. estab. timing base */
#ifdef TESLA
do_logout = 0;
#endif /* TESLA */
/*
* Make sure we have 0, 1, 2 open
* Otherwise `` jobs will not work... (From knaff@poly.polytechnique.fr)
*/
{
do
if ((f = xopen(_PATH_DEVNULL, O_RDONLY|O_LARGEFILE)) == -1 &&
(f = xopen("/", O_RDONLY|O_LARGEFILE)) == -1)
exit(1);
while (f < 3);
xclose(f);
}
osinit(); /* Os dependent initialization */
{
char *t;
t = strrchr(argv[0], '/');
#ifdef WINNT_NATIVE
{
char *s = strrchr(argv[0], '\\');
if (s)
t = s;
}
#endif /* WINNT_NATIVE */
t = t ? t + 1 : argv[0];
if (*t == '-') t++;
progname = strsave((t && *t) ? t : tcshstr); /* never want a null */
tcsh = strncmp(progname, tcshstr, sizeof(tcshstr) - 1) == 0;
}
/*
* Initialize non constant strings
*/
#ifdef _PATH_BSHELL
STR_BSHELL = SAVE(_PATH_BSHELL);
#endif
#ifdef _PATH_TCSHELL
STR_SHELLPATH = SAVE(_PATH_TCSHELL);
#else
# ifdef _PATH_CSHELL
STR_SHELLPATH = SAVE(_PATH_CSHELL);
# endif
#endif
STR_WORD_CHARS = SAVE(WORD_CHARS);
STR_WORD_CHARS_VI = SAVE(WORD_CHARS_VI);
HIST = '!';
HISTSUB = '^';
PRCH = tcsh ? '>' : '%'; /* to replace %# in $prompt for normal users */
PRCHROOT = '#'; /* likewise for root */
word_chars = STR_WORD_CHARS;
bslash_quote = 0; /* PWP: do tcsh-style backslash quoting? */
anyerror = 1; /* for compatibility */
setcopy(STRanyerror, STRNULL, VAR_READWRITE);
/* Default history size to 100 */
setcopy(STRhistory, str2short("100"), VAR_READWRITE);
sethistory(100);
tempv = argv;
ffile = SAVE(tempv[0]);
dolzero = 0;
if (eq(ffile, STRaout)) /* A.out's are quittable */
quitit = 1;
uid = getuid();
gid = getgid();
euid = geteuid();
egid = getegid();
/*
* We are a login shell if: 1. we were invoked as -<something> with
* optional arguments 2. or we were invoked only with the -l flag
*/
loginsh = (**tempv == '-') || (argc == 2 &&
tempv[1][0] == '-' && tempv[1][1] == 'l' &&
tempv[1][2] == '\0');
#ifdef _VMS_POSIX
/* No better way to find if we are a login shell */
if (!loginsh) {
loginsh = (argc == 1 && getppid() == 1);
**tempv = '-'; /* Avoid giving VMS an acidic stomach */
}
#endif /* _VMS_POSIX */
if (loginsh && **tempv != '-') {
char *argv0;
/*
* Mangle the argv space
*/
tempv[1][0] = '\0';
tempv[1][1] = '\0';
tempv[1] = NULL;
argv0 = strspl("-", *tempv);
*tempv = argv0;
argc--;
}
if (loginsh) {
(void) time(&chktim);
setNS(STRloginsh);
}
NoNLSRebind = getenv("NOREBIND") != NULL;
#ifdef NLS
# ifdef SETLOCALEBUG
dont_free = 1;
# endif /* SETLOCALEBUG */
(void) setlocale(LC_ALL, "");
# ifdef LC_COLLATE
(void) setlocale(LC_COLLATE, "");
# endif
# ifdef SETLOCALEBUG
dont_free = 0;
# endif /* SETLOCALEBUG */
# ifdef STRCOLLBUG
fix_strcoll_bug();
# endif /* STRCOLLBUG */
/*
* On solaris ISO8859-1 contains no printable characters in the upper half
* so we need to test only for MB_CUR_MAX == 1, otherwise for multi-byte
* locales we are always AsciiOnly == 0.
*/
if (MB_CUR_MAX == 1) {
int k;
for (k = 0200; k <= 0377 && !isprint(CTL_ESC(k)); k++)
continue;
AsciiOnly = k > 0377;
} else
AsciiOnly = 0;
#else
AsciiOnly = getenv("LANG") == NULL && getenv("LC_CTYPE") == NULL;
#endif /* NLS */
if (MapsAreInited && !NLSMapsAreInited)
ed_InitNLSMaps();
ResetArrowKeys();
/*
* Initialize for periodic command intervals. Also, initialize the dummy
* tty list for login-watch.
*/
(void) time(&t_period);
#ifndef HAVENOUTMP
initwatch();
#endif /* !HAVENOUTMP */
#if defined(alliant)
/*
* From: Jim Pace <jdp@research.att.com>
* tcsh does not work properly on the alliants through an rlogin session.
* The shell generally hangs. Also, reference to the controlling terminal
* does not work ( ie: echo foo > /dev/tty ).
*
* A security feature was added to rlogind affecting FX/80's Concentrix
* from revision 5.5.xx upwards (through 5.7 where this fix was implemented)
* This security change also affects the FX/2800 series.
* The security change to rlogind requires the process group of an rlogin
* session become disassociated with the tty in rlogind.
*
* The changes needed are:
* 1. set the process group
* 2. reenable the control terminal
*/
if (loginsh && isatty(SHIN)) {
ttyn = ttyname(SHIN);
xclose(SHIN);
SHIN = xopen(ttyn, O_RDWR|O_LARGEFILE);
shpgrp = getpid();
(void) ioctl (SHIN, TIOCSPGRP, (ioctl_t) &shpgrp);
(void) setpgid(0, shpgrp);
}
#endif /* alliant */
/*
* Move the descriptors to safe places. The variable didfds is 0 while we
* have only FSH* to work with. When didfds is true, we have 0,1,2 and
* prefer to use these.
*/
initdesc();
cdtohome = 1;
setv(STRcdtohome, SAVE(""), VAR_READWRITE);
/*
* Get and set the tty now
*/
if ((ttyn = ttyname(SHIN)) != NULL) {
/*
* Could use rindex to get rid of other possible path components, but
* hpux preserves the subdirectory /pty/ when storing the tty name in
* utmp, so we keep it too.
*/
if (strncmp(ttyn, "/dev/", 5) == 0)
setv(STRtty, cp = SAVE(ttyn + 5), VAR_READWRITE);
else
setv(STRtty, cp = SAVE(ttyn), VAR_READWRITE);
}
else
setv(STRtty, cp = SAVE(""), VAR_READWRITE);
/*
* Initialize the shell variables. ARGV and PROMPT are initialized later.
* STATUS is also munged in several places. CHILD is munged when
* forking/waiting
*/
/*
* 7-10-87 Paul Placeway autologout should be set ONLY on login shells and
* on shells running as root. Out of these, autologout should NOT be set
* for any psudo-terminals (this catches most window systems) and not for
* any terminal running X windows.
*
* At Ohio State, we have had problems with a user having his X session
* drop out from under him (on a Sun) because the shell in his master
* xterm timed out and exited.
*
* Really, this should be done with a program external to the shell, that
* watches for no activity (and NO running programs, such as dump) on a
* terminal for a long peroid of time, and then SIGHUPS the shell on that
* terminal.
*
* bugfix by Rich Salz <rsalz@PINEAPPLE.BBN.COM>: For root rsh things
* allways first check to see if loginsh or really root, then do things
* with ttyname()
*
* Also by Jean-Francois Lamy <lamy%ai.toronto.edu@RELAY.CS.NET>: check the
* value of cp before using it! ("root can rsh too")
*
* PWP: keep the nested ifs; the order of the tests matters and a good
* (smart) C compiler might re-arange things wrong.
*/
#ifdef AUTOLOGOUT
# ifdef convex
if (uid == 0)
/* root always has a 15 minute autologout */
setcopy(STRautologout, STRrootdefautologout, VAR_READWRITE);
else
if (loginsh)
/* users get autologout set to 0 */
setcopy(STRautologout, STR0, VAR_READWRITE);
# else /* convex */
if (loginsh || (uid == 0)) {
if (*cp) {
/* only for login shells or root and we must have a tty */
if (((cp2 = Strrchr(cp, (Char) '/')) != NULL) &&
(Strncmp(cp, STRptssl, 3) != 0)) {
cp2 = cp2 + 1;
}
else
cp2 = cp;
if (!(((Strncmp(cp2, STRtty, 3) == 0) && Isalpha(cp2[3])) ||
Strstr(cp, STRptssl) != NULL)) {
if (getenv("DISPLAY") == NULL) {
/* NOT on X window shells */
setcopy(STRautologout, STRdefautologout, VAR_READWRITE);
}
}
}
}
# endif /* convex */
#endif /* AUTOLOGOUT */
sigset_interrupting(SIGALRM, queue_alrmcatch);
setstatus(0);
/*
* get and set machine specific environment variables
*/
getmachine();
/*
* Publish the selected echo style
*/
#if ECHO_STYLE != BSD_ECHO
if (tcsh) {
# if ECHO_STYLE == NONE_ECHO
setcopy(STRecho_style, STRnone, VAR_READWRITE);
# endif /* ECHO_STYLE == NONE_ECHO */
# if ECHO_STYLE == SYSV_ECHO
setcopy(STRecho_style, STRsysv, VAR_READWRITE);
# endif /* ECHO_STYLE == SYSV_ECHO */
# if ECHO_STYLE == BOTH_ECHO
setcopy(STRecho_style, STRboth, VAR_READWRITE);
# endif /* ECHO_STYLE == BOTH_ECHO */
} else
#endif /* ECHO_STYLE != BSD_ECHO */
setcopy(STRecho_style, STRbsd, VAR_READWRITE);
/*
* increment the shell level.
*/
shlvl(1);
#ifdef __ANDROID__
/* On Android, $HOME either isn't set or set to /data, a R/O location.
Check for the environment variable EXTERNAL_STORAGE, which contains
the mount point of the external storage (SD card, mostly). If
EXTERNAL_STORAGE isn't set fall back to "/sdcard". Eventually
override $HOME so the environment is on the same page. */
if (((tcp = getenv("HOME")) != NULL && strcmp (tcp, "/data") != 0)
|| (tcp = getenv("EXTERNAL_STORAGE")) != NULL) {
cp = quote(SAVE(tcp));
} else
cp = quote(SAVE("/sdcard"));
tsetenv(STRKHOME, cp);
#else
if ((tcp = getenv("HOME")) != NULL)
cp = quote(SAVE(tcp));
else
cp = NULL;
#endif
if (cp == NULL)
fast = 1; /* No home -> can't read scripts */
else
setv(STRhome, cp, VAR_READWRITE);
dinit(cp); /* dinit thinks that HOME == cwd in a login
* shell */
/*
* Grab other useful things from the environment. Should we grab
* everything??
*/
{
char *cln, *cus, *cgr;
struct passwd *pw;
struct group *gr;
#ifdef apollo
int oid = getoid();
setv(STRoid, Itoa(oid, 0, 0), VAR_READWRITE);
#endif /* apollo */
setv(STReuid, Itoa(euid, 0, 0), VAR_READWRITE);
if ((pw = xgetpwuid(euid)) == NULL)
setcopy(STReuser, STRunknown, VAR_READWRITE);
else
setcopy(STReuser, str2short(pw->pw_name), VAR_READWRITE);
setv(STRuid, Itoa(uid, 0, 0), VAR_READWRITE);
setv(STRgid, Itoa(gid, 0, 0), VAR_READWRITE);
cln = getenv("LOGNAME");
cus = getenv("USER");
if (cus != NULL)
setv(STRuser, quote(SAVE(cus)), VAR_READWRITE);
else if (cln != NULL)
setv(STRuser, quote(SAVE(cln)), VAR_READWRITE);
else if ((pw = xgetpwuid(uid)) == NULL)
setcopy(STRuser, STRunknown, VAR_READWRITE);
else
setcopy(STRuser, str2short(pw->pw_name), VAR_READWRITE);
if (cln == NULL)
tsetenv(STRLOGNAME, varval(STRuser));
if (cus == NULL)
tsetenv(STRKUSER, varval(STRuser));
cgr = getenv("GROUP");
if (cgr != NULL)
setv(STRgroup, quote(SAVE(cgr)), VAR_READWRITE);
else if ((gr = xgetgrgid(gid)) == NULL)
setcopy(STRgroup, STRunknown, VAR_READWRITE);
else
setcopy(STRgroup, str2short(gr->gr_name), VAR_READWRITE);
if (cgr == NULL)
tsetenv(STRKGROUP, varval(STRgroup));
}
/*
* HOST may be wrong, since rexd transports the entire environment on sun
* 3.x Just set it again
*/
{
char cbuff[MAXHOSTNAMELEN];
if (gethostname(cbuff, sizeof(cbuff)) >= 0) {
cbuff[sizeof(cbuff) - 1] = '\0'; /* just in case */
tsetenv(STRHOST, str2short(cbuff));
}
else
tsetenv(STRHOST, STRunknown);
}
#ifdef REMOTEHOST
/*
* Try to determine the remote host we were logged in from.
*/
remotehost();
#endif /* REMOTEHOST */
#ifdef apollo
if ((tcp = getenv("SYSTYPE")) == NULL)
tcp = "bsd4.3";
tsetenv(STRSYSTYPE, quote(str2short(tcp)));
#endif /* apollo */
/*
* set editing on by default, unless running under Emacs as an inferior
* shell.
* We try to do this intelligently. If $TERM is available, then it
* should determine if we should edit or not. $TERM is preserved
* across rlogin sessions, so we will not get confused if we rlogin
* under an emacs shell. Another advantage is that if we run an
* xterm under an emacs shell, then the $TERM will be set to
* xterm, so we are going to want to edit. Unfortunately emacs
* does not restore all the tty modes, so xterm is not very well
* set up. But this is not the shell's fault.
* Also don't edit if $TERM == wm, for when we're running under an ATK app.
* Finally, emacs compiled under terminfo, sets the terminal to dumb,
* so disable editing for that too.
*
* Unfortunately, in some cases the initial $TERM setting is "unknown",
* "dumb", or "network" which is then changed in the user's startup files.
* We fix this by setting noediting here if $TERM is unknown/dumb and
* if noediting is set, we switch on editing if $TERM is changed.
*/
if ((tcp = getenv("TERM")) != NULL) {
setv(STRterm, quote(SAVE(tcp)), VAR_READWRITE);
noediting = strcmp(tcp, "unknown") == 0 || strcmp(tcp, "dumb") == 0 ||
strcmp(tcp, "network") == 0;
editing = strcmp(tcp, "emacs") != 0 && strcmp(tcp, "wm") != 0 &&
!noediting;
}
else {
noediting = 0;
editing = ((tcp = getenv("EMACS")) == NULL || strcmp(tcp, "t") != 0);
}
/*
* The 'edit' variable is either set or unset. It doesn't
* need a value. Making it 'emacs' might be confusing.
*/
if (editing)
setNS(STRedit);
/*
* still more mutability: make the complete routine automatically add the
* suffix of file names...
*/
setNS(STRaddsuffix);
/*
* Compatibility with tcsh >= 6.12 by default
*/
setNS(STRcsubstnonl);
/*
* Random default kill ring size
*/
setcopy(STRkillring, str2short("30"), VAR_READWRITE);
/*
* Re-initialize path if set in environment
*/
if ((tcp = getenv("PATH")) == NULL)
#ifdef _PATH_DEFPATH
importpath(str2short(_PATH_DEFPATH));
#else /* !_PATH_DEFPATH */
setq(STRpath, defaultpath(), &shvhed, VAR_READWRITE);
#endif /* _PATH_DEFPATH */
else
/* Importpath() allocates memory for the path, and the
* returned pointer from SAVE() was discarded, so
* this was a memory leak.. (sg)
*
* importpath(SAVE(tcp));
*/
importpath(str2short(tcp));
{
/* If the SHELL environment variable ends with "tcsh", set
* STRshell to the same path. This is to facilitate using
* the executable in environments where the compiled-in
* default isn't appropriate (sg).
*/
size_t sh_len = 0;
if ((tcp = getenv("SHELL")) != NULL) {
sh_len = strlen(tcp);
if ((sh_len >= 5 && strcmp(tcp + (sh_len - 5), "/tcsh") == 0) ||
(!tcsh && sh_len >= 4 && strcmp(tcp + (sh_len - 4), "/csh") == 0))
setv(STRshell, quote(SAVE(tcp)), VAR_READWRITE);
else
sh_len = 0;
}
if (sh_len == 0)
setcopy(STRshell, STR_SHELLPATH, VAR_READWRITE);
}
#ifdef _OSD_POSIX /* BS2000 needs this variable set to "SHELL" */
if ((tcp = getenv("PROGRAM_ENVIRONMENT")) == NULL)
tcp = "SHELL";
tsetenv(STRPROGRAM_ENVIRONMENT, quote(str2short(tcp)));
#endif /* _OSD_POSIX */
#ifdef COLOR_LS_F
if ((tcp = getenv("CLICOLOR_FORCE")) != NULL)
parseCLICOLOR_FORCE(TRUE, str2short(tcp));
if ((tcp = getenv("LSCOLORS")) != NULL)
parseLSCOLORS(str2short(tcp), FALSE);
if ((tcp = getenv("LS_COLORS")) != NULL)
parseLS_COLORS(str2short(tcp), FALSE);
#endif /* COLOR_LS_F */
mainpid = getpid();
doldol = putn((tcsh_number_t)mainpid); /* For $$ */
#ifdef WINNT_NATIVE
{
char *tmp;
Char *tmp2;
if ((tmp = getenv("TMP")) != NULL) {
tmp = xasprintf("%s/%s", tmp, "sh");
tmp2 = SAVE(tmp);
xfree(tmp);
}
else {
tmp2 = SAVE("");
}
shtemp = Strspl(tmp2, doldol); /* For << */
xfree(tmp2);
}
#else /* !WINNT_NATIVE */
#ifdef HAVE_MKSTEMP
{
const char *tmpdir = getenv ("TMPDIR");
if (!tmpdir)
tmpdir = "/tmp";
shtemp = Strspl(SAVE(tmpdir), SAVE("/sh" TMP_TEMPLATE)); /* For << */
}
#else /* !HAVE_MKSTEMP */
shtemp = Strspl(STRtmpsh, doldol); /* For << */
#endif /* HAVE_MKSTEMP */
#endif /* WINNT_NATIVE */
/*
* Record the interrupt states from the parent process. If the parent is
* non-interruptible our hand must be forced or we (and our children) won't
* be either. Our children inherit termination from our parent. We catch it
* only if we are the login shell.
*/
sigaction(SIGINT, NULL, &parintr);
sigaction(SIGTERM, NULL, &parterm);
#ifdef TCF
/* Enable process migration on ourselves and our progeny */
(void) signal(SIGMIGRATE, SIG_DFL);
#endif /* TCF */
/*
* dspkanji/dspmbyte autosetting
*/
/* PATCH IDEA FROM Issei.Suzuki VERY THANKS */
#if defined(DSPMBYTE)
#if defined(NLS) && defined(LC_CTYPE)
if (((tcp = setlocale(LC_CTYPE, NULL)) != NULL || (tcp = getenv("LANG")) != NULL) && !adrof(CHECK_MBYTEVAR))
#else
if ((tcp = getenv("LANG")) != NULL && !adrof(CHECK_MBYTEVAR))
#endif
{
autoset_dspmbyte(str2short(tcp));
}
#if defined(WINNT_NATIVE)
else if (!adrof(CHECK_MBYTEVAR))
nt_autoset_dspmbyte();
#endif /* WINNT_NATIVE */
#endif
#if defined(AUTOSET_KANJI)
# if defined(NLS) && defined(LC_CTYPE)
if (setlocale(LC_CTYPE, NULL) != NULL || getenv("LANG") != NULL)
# else
if (getenv("LANG") != NULL)
# endif
autoset_kanji();
#endif /* AUTOSET_KANJI */
fix_version(); /* publish the shell version */
if (argc > 1 && strcmp(argv[1], "--version") == 0) {
xprintf("%" TCSH_S "\n", varval(STRversion));
xexit(0);
}
if (argc > 1 && strcmp(argv[1], "--help") == 0) {
xprintf("%" TCSH_S "\n\n", varval(STRversion));
xprintf("%s", CGETS(11, 8, HELP_STRING));
xexit(0);
}
/*
* Process the arguments.
*
* Note that processing of -v/-x is actually delayed till after script
* processing.
*
* We set the first character of our name to be '-' if we are a shell
* running interruptible commands. Many programs which examine ps'es
* use this to filter such shells out.
*/
argc--, tempv++;
while (argc > 0 && (tcp = tempv[0])[0] == '-' &&
*++tcp != '\0' && !batch) {
do
switch (*tcp++) {
case 0: /* - Interruptible, no prompt */
prompt = 0;
setintr = 1;
nofile = 1;
break;
case 'b': /* -b Next arg is input file */
batch = 1;
break;
case 'c': /* -c Command input from arg */
if (argc == 1)
xexit(0);
argc--, tempv++;
#ifdef M_XENIX
/* Xenix Vi bug:
it relies on a 7 bit environment (/bin/sh), so it
pass ascii arguments with the 8th bit set */
if (!strcmp(argv[0], "sh"))
{
char *p;
for (p = tempv[0]; *p; ++p)
*p &= ASCII;
}
#endif
targinp = tempv[0];
prompt = 0;
nofile = 1;
break;
case 'd': /* -d Load directory stack from file */
rdirs = 1;
break;
#ifdef apollo
case 'D': /* -D Define environment variable */
{
Char *dp;
cp = str2short(tcp);
if (dp = Strchr(cp, '=')) {
*dp++ = '\0';
tsetenv(cp, dp);
}
else
tsetenv(cp, STRNULL);
}
*tcp = '\0'; /* done with this argument */
break;
#endif /* apollo */
case 'e': /* -e Exit on any error */
exiterr = 1;
break;
case 'f': /* -f Fast start */
fast = 1;
break;
case 'i': /* -i Interactive, even if !intty */
intact = 1;
nofile = 1;
break;
case 'm': /* -m read .cshrc (from su) */
mflag = 1;
break;
case 'n': /* -n Don't execute */
noexec = 1;
break;
case 'q': /* -q (Undoc'd) ... die on quit */
quitit = 1;
break;
case 's': /* -s Read from std input */
nofile = 1;
break;
case 't': /* -t Read one line from input */
onelflg = 2;
prompt = 0;
nofile = 1;
break;