/*
* Handle the multitudinous $ expansion forms.
* Ugh.
*/
static void
Dgetdol(void)
{
Char *np;
struct varent *vp = NULL;
Char name[4 * MAXVARLEN + 1];
int c, sc;
int subscr = 0, lwb = 1, upb = 0;
bool dimen = 0, bitset = 0;
char tnp;
Char wbuf[BUFSIZ];
static Char *dolbang = NULL;
dolnmod = dolmcnt = dolwcnt = 0;
c = sc = DgetC(0);
if (c == '{')
c = DgetC(0); /* sc is { to take } later */
if ((c & TRIM) == '#')
dimen++, c = DgetC(0); /* $# takes dimension */
else if (c == '?')
bitset++, c = DgetC(0); /* $? tests existence */
switch (c) {
case '!':
if (dimen || bitset)
stderror(ERR_SYNTAX);
if (backpid != 0) {
if (dolbang)
xfree(dolbang);
setDolp(dolbang = putn(backpid));
}
goto eatbrac;
case '$':
if (dimen || bitset)
stderror(ERR_SYNTAX);
setDolp(doldol);
goto eatbrac;
case '<' | QUOTE:
if (bitset)
stderror(ERR_NOTALLOWED, "$?<");
if (dimen)
stderror(ERR_NOTALLOWED, "$?#");
for (np = wbuf; read(OLDSTD, &tnp, 1) == 1; np++) {
*np = (unsigned char) tnp;
if (np >= &wbuf[BUFSIZ - 1])
stderror(ERR_LTOOLONG);
if (tnp == '\n')
break;
}
*np = 0;
/*
* KLUDGE: dolmod is set here because it will cause setDolp to call
* domod and thus to copy wbuf. Otherwise setDolp would use it
* directly. If we saved it ourselves, no one would know when to free
* it. The actual function of the 'q' causes filename expansion not to
* be done on the interpolated value.
*/
dolmod[dolnmod++] = 'q';
dolmcnt = 10000;
setDolp(wbuf);
goto eatbrac;
case DEOF:
case '\n':
stderror(ERR_SYNTAX);
/* NOTREACHED */
break;
case '*':
(void) Strlcpy(name, STRargv, sizeof name/sizeof(Char));
vp = adrof(STRargv);
subscr = -1; /* Prevent eating [...] */
break;
default:
np = name;
if (Isdigit(c)) {
if (dimen)
stderror(ERR_NOTALLOWED, "$#<num>");
subscr = 0;
do {
subscr = subscr * 10 + c - '0';
c = DgetC(0);
} while (Isdigit(c));
unDredc(c);
if (subscr < 0)
stderror(ERR_RANGE);
if (subscr == 0) {
if (bitset) {
dolp = ffile ? STR1 : STR0;
goto eatbrac;
}
if (ffile == 0)
stderror(ERR_DOLZERO);
fixDolMod();
setDolp(ffile);
goto eatbrac;
}
if (bitset)
stderror(ERR_DOLQUEST);
vp = adrof(STRargv);
if (vp == 0) {
vp = &nulargv;
goto eatmod;
}
break;
}
if (!alnum(c))
stderror(ERR_VARALNUM);
for (;;) {
*np++ = c;
c = DgetC(0);
if (!alnum(c))
break;
if (np >= &name[MAXVARLEN])
stderror(ERR_VARTOOLONG);
}
*np++ = 0;
unDredc(c);
vp = adrof(name);
}
if (bitset) {
dolp = (vp || getenv(short2str(name))) ? STR1 : STR0;
goto eatbrac;
}
if (vp == 0) {
np = str2short(getenv(short2str(name)));
if (np) {
fixDolMod();
setDolp(np);
goto eatbrac;
}
udvar(name);
/* NOTREACHED */
}
c = DgetC(0);
upb = blklen(vp->vec);
if (dimen == 0 && subscr == 0 && c == '[') {
np = name;
for (;;) {
c = DgetC(DODOL); /* Allow $ expand within [ ] */
if (c == ']')
break;
if (c == '\n' || c == DEOF)
stderror(ERR_INCBR);
if (np >= &name[sizeof(name) / sizeof(Char) - 2])
stderror(ERR_VARTOOLONG);
*np++ = c;
}
*np = 0, np = name;
if (dolp || dolcnt) /* $ exp must end before ] */
stderror(ERR_EXPORD);
if (!*np)
stderror(ERR_SYNTAX);
if (Isdigit(*np)) {
int i;
for (i = 0; Isdigit(*np); i = i * 10 + *np++ - '0')
continue;
if ((i < 0 || i > upb) && !any("-*", *np)) {
dolerror(vp->v_name);
return;
}
lwb = i;
if (!*np)
upb = lwb, np = STRstar;
}
if (*np == '*')
np++;
else if (*np != '-')
stderror(ERR_MISSING, '-');
else {
int i = upb;
np++;
if (Isdigit(*np)) {
i = 0;
while (Isdigit(*np))
i = i * 10 + *np++ - '0';
if (i < 0 || i > upb) {
dolerror(vp->v_name);
return;
}
}
if (i < lwb)
upb = lwb - 1;
else
upb = i;
}
if (lwb == 0) {
if (upb != 0) {
dolerror(vp->v_name);
return;
}
upb = -1;
}
if (*np)
stderror(ERR_SYNTAX);
}
else {
if (subscr > 0) {
if (subscr > upb)
lwb = 1, upb = 0;
else
lwb = upb = subscr;
}
unDredc(c);
}
if (dimen) {
Char *cp = putn(upb - lwb + 1);
addla(cp);
xfree(cp);
}
else {
eatmod:
fixDolMod();
dolnxt = &vp->vec[lwb - 1];
dolcnt = upb - lwb + 1;
}
eatbrac:
if (sc == '{') {
c = Dredc();
if (c != '}')
stderror(ERR_MISSING, '}');
}
}
/*
* dcanon - canonicalize the pathname, removing excess ./ and ../ etc.
* we are of course assuming that the file system is standardly
* constructed (always have ..'s, directories have links)
*/
Char *
dcanon(Char *cp, Char *p)
{
Char *sp;
Char *p1, *p2; /* general purpose */
bool slash;
Char link[PATH_MAX];
char tlink[PATH_MAX];
int cc;
Char *newcp;
/*
* christos: if the path given does not start with a slash prepend cwd. If
* cwd does not start with a path or the result would be too long abort().
*/
if (*cp != '/') {
Char tmpdir[PATH_MAX];
p1 = value(STRcwd);
if (p1 == NULL || *p1 != '/')
abort();
if (Strlen(p1) + Strlen(cp) + 1 >= PATH_MAX)
abort();
(void) Strlcpy(tmpdir, p1, sizeof tmpdir/sizeof(Char));
(void) Strlcat(tmpdir, STRslash, sizeof tmpdir/sizeof(Char));
(void) Strlcat(tmpdir, cp, sizeof tmpdir/sizeof(Char));
free(cp);
cp = p = Strsave(tmpdir);
}
while (*p) { /* for each component */
sp = p; /* save slash address */
while (*++p == '/') /* flush extra slashes */
continue;
if (p != ++sp)
for (p1 = sp, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
p = sp; /* save start of component */
slash = 0;
while (*p) /* find next slash or end of path */
if (*++p == '/') {
slash = 1;
*p = 0;
break;
}
if (*sp == '\0') /* if component is null */
if (--sp == cp) /* if path is one char (i.e. /) */
break;
else
*sp = '\0';
else if (sp[0] == '.' && sp[1] == 0) {
if (slash) {
for (p1 = sp, p2 = p + 1; (*p1++ = *p2++) != '\0';)
continue;
p = --sp;
}
else if (--sp != cp)
*sp = '\0';
}
else if (sp[0] == '.' && sp[1] == '.' && sp[2] == 0) {
/*
* We have something like "yyy/xxx/..", where "yyy" can be null or
* a path starting at /, and "xxx" is a single component. Before
* compressing "xxx/..", we want to expand "yyy/xxx", if it is a
* symbolic link.
*/
*--sp = 0; /* form the pathname for readlink */
if (sp != cp && !adrof(STRignore_symlinks) &&
(cc = readlink(short2str(cp), tlink,
sizeof tlink-1)) >= 0) {
tlink[cc] = '\0';
(void) Strlcpy(link, str2short(tlink), sizeof link/sizeof(Char));
if (slash)
*p = '/';
/*
* Point p to the '/' in "/..", and restore the '/'.
*/
*(p = sp) = '/';
/*
* find length of p
*/
for (p1 = p; *p1++;)
continue;
if (*link != '/') {
/*
* Relative path, expand it between the "yyy/" and the
* "/..". First, back sp up to the character past "yyy/".
*/
while (*--sp != '/')
continue;
sp++;
*sp = 0;
/*
* New length is "yyy/" + link + "/.." and rest
*/
p1 = newcp = xreallocarray(NULL,
(sp - cp) + cc + (p1 - p), sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = cp; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = link; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at expanded "/xxx".
*/
p = sp - cp - 1 + newcp;
}
else {
/*
* New length is link + "/.." and rest
*/
p1 = newcp = xreallocarray(NULL, cc + (p1 - p),
sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = link; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at beginning
*/
p = newcp;
}
free(cp);
cp = newcp;
continue; /* canonicalize the link */
}
*sp = '/';
if (sp != cp)
while (*--sp != '/')
continue;
if (slash) {
for (p1 = sp + 1, p2 = p + 1; (*p1++ = *p2++) != '\0';)
continue;
p = sp;
}
else if (cp == sp)
*++sp = '\0';
else
*sp = '\0';
}
else { /* normal dir name (not . or .. or nothing) */
if (sp != cp && adrof(STRchase_symlinks) &&
!adrof(STRignore_symlinks) &&
(cc = readlink(short2str(cp), tlink,
sizeof tlink-1)) >= 0) {
tlink[cc] = '\0';
(void) Strlcpy(link, str2short(tlink), sizeof link/sizeof(Char));
/*
* restore the '/'.
*/
if (slash)
*p = '/';
/*
* point sp to p (rather than backing up).
*/
sp = p;
/*
* find length of p
*/
for (p1 = p; *p1++;)
continue;
if (*link != '/') {
/*
* Relative path, expand it between the "yyy/" and the
* remainder. First, back sp up to the character past
* "yyy/".
*/
while (*--sp != '/')
continue;
sp++;
*sp = 0;
/*
* New length is "yyy/" + link + "/.." and rest
*/
p1 = newcp = xreallocarray(NULL,
(sp - cp) + cc + (p1 - p), sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = cp; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = link; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at expanded "/xxx".
*/
p = sp - cp - 1 + newcp;
}
else {
/*
* New length is link + the rest
*/
p1 = newcp = xreallocarray(NULL, cc + (p1 - p), sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = link; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at beginning
*/
p = newcp;
}
free(cp);
cp = newcp;
continue; /* canonicalize the link */
}
if (slash)
*p = '/';
}
}
/*
* fix home...
*/
p1 = value(STRhome);
cc = Strlen(p1);
/*
* See if we're not in a subdir of STRhome
*/
if (p1 && *p1 == '/' &&
(Strncmp(p1, cp, cc) != 0 || (cp[cc] != '/' && cp[cc] != '\0'))) {
static ino_t home_ino = -1;
static dev_t home_dev = -1;
static Char *home_ptr = NULL;
struct stat statbuf;
/*
* Get dev and ino of STRhome
*/
if (home_ptr != p1 &&
stat(short2str(p1), &statbuf) != -1) {
home_dev = statbuf.st_dev;
home_ino = statbuf.st_ino;
home_ptr = p1;
}
/*
* Start comparing dev & ino backwards
*/
Strlcpy(link, cp, sizeof link/sizeof(Char));
p2 = link;
for (sp = NULL; *p2 && stat(short2str(p2), &statbuf) != -1;) {
if (statbuf.st_dev == home_dev &&
statbuf.st_ino == home_ino) {
sp = (Char *) - 1;
break;
}
if ((sp = Strrchr(p2, '/')) != NULL)
*sp = '\0';
}
/*
* See if we found it
*/
if (*p2 && sp == (Char *) -1) {
/*
* Use STRhome to make '~' work
*/
newcp = Strspl(p1, cp + Strlen(p2));
free(cp);
cp = newcp;
}
}
return cp;
}
/*
* Handle the multitudinous $ expansion forms.
* Ugh.
*/
static void
Dgetdol(void)
{
Char *np;
struct varent *vp = NULL;
struct Strbuf *name = Strbuf_alloc();
eChar c, sc;
int subscr = 0, lwb = 1, upb = 0;
int dimen = 0, bitset = 0, length = 0;
static Char *dolbang = NULL;
cleanup_push(name, Strbuf_free);
dolmod.len = dolmcnt = dol_flag_a = 0;
c = sc = DgetC(0);
if (c == DEOF) {
stderror(ERR_SYNTAX);
return;
}
if (c == '{')
c = DgetC(0); /* sc is { to take } later */
if ((c & TRIM) == '#')
dimen++, c = DgetC(0); /* $# takes dimension */
else if (c == '?')
bitset++, c = DgetC(0); /* $? tests existence */
else if (c == '%')
length++, c = DgetC(0); /* $% returns length in chars */
switch (c) {
case '!':
if (dimen || bitset || length)
stderror(ERR_SYNTAX);
if (backpid != 0) {
xfree(dolbang);
setDolp(dolbang = putn((tcsh_number_t)backpid));
}
cleanup_until(name);
goto eatbrac;
case '$':
if (dimen || bitset || length)
stderror(ERR_SYNTAX);
setDolp(doldol);
cleanup_until(name);
goto eatbrac;
case '<'|QUOTE: {
static struct Strbuf wbuf; /* = Strbuf_INIT; */
if (bitset)
stderror(ERR_NOTALLOWED, "$?<");
if (dimen)
stderror(ERR_NOTALLOWED, "$#<");
if (length)
stderror(ERR_NOTALLOWED, "$%<");
wbuf.len = 0;
{
char cbuf[MB_LEN_MAX];
size_t cbp = 0;
int old_pintr_disabled;
for (;;) {
int len;
ssize_t res;
Char wc;
pintr_push_enable(&old_pintr_disabled);
res = force_read(OLDSTD, cbuf + cbp, 1);
cleanup_until(&old_pintr_disabled);
if (res != 1)
break;
cbp++;
len = normal_mbtowc(&wc, cbuf, cbp);
if (len == -1) {
reset_mbtowc();
if (cbp < MB_LEN_MAX)
continue; /* Maybe a partial character */
wc = (unsigned char)*cbuf | INVALID_BYTE;
}
if (len <= 0)
len = 1;
if (cbp != (size_t)len)
memmove(cbuf, cbuf + len, cbp - len);
cbp -= len;
if (wc == '\n')
break;
Strbuf_append1(&wbuf, wc);
}
while (cbp != 0) {
int len;
Char wc;
len = normal_mbtowc(&wc, cbuf, cbp);
if (len == -1) {
reset_mbtowc();
wc = (unsigned char)*cbuf | INVALID_BYTE;
}
if (len <= 0)
len = 1;
if (cbp != (size_t)len)
memmove(cbuf, cbuf + len, cbp - len);
cbp -= len;
if (wc == '\n')
break;
Strbuf_append1(&wbuf, wc);
}
Strbuf_terminate(&wbuf);
}
fixDolMod();
setDolp(wbuf.s); /* Kept allocated until next $< expansion */
cleanup_until(name);
goto eatbrac;
}
case '*':
Strbuf_append(name, STRargv);
Strbuf_terminate(name);
vp = adrof(STRargv);
subscr = -1; /* Prevent eating [...] */
break;
case DEOF:
case '\n':
np = dimen ? STRargv : (bitset ? STRstatus : NULL);
if (np) {
bitset = 0;
Strbuf_append(name, np);
Strbuf_terminate(name);
vp = adrof(np);
subscr = -1; /* Prevent eating [...] */
unDredc(c);
break;
}
else
stderror(ERR_SYNTAX);
/*NOTREACHED*/
default:
if (Isdigit(c)) {
if (dimen)
stderror(ERR_NOTALLOWED, "$#<num>");
subscr = 0;
do {
subscr = subscr * 10 + c - '0';
c = DgetC(0);
} while (c != DEOF && Isdigit(c));
unDredc(c);
if (subscr < 0)
stderror(ERR_RANGE);
if (subscr == 0) {
if (bitset) {
dolp = dolzero ? STR1 : STR0;
cleanup_until(name);
goto eatbrac;
}
if (ffile == 0)
stderror(ERR_DOLZERO);
if (length) {
length = Strlen(ffile);
addla(putn((tcsh_number_t)length));
}
else {
fixDolMod();
setDolp(ffile);
}
cleanup_until(name);
goto eatbrac;
}
#if 0
if (bitset)
stderror(ERR_NOTALLOWED, "$?<num>");
if (length)
stderror(ERR_NOTALLOWED, "$%<num>");
#endif
vp = adrof(STRargv);
if (vp == 0) {
vp = &nulargv;
cleanup_until(name);
goto eatmod;
}
break;
}
if (c == DEOF || !alnum(c)) {
np = dimen ? STRargv : (bitset ? STRstatus : NULL);
if (np) {
bitset = 0;
Strbuf_append(name, np);
Strbuf_terminate(name);
vp = adrof(np);
subscr = -1; /* Prevent eating [...] */
unDredc(c);
break;
}
else
stderror(ERR_VARALNUM);
}
for (;;) {
Strbuf_append1(name, (Char) c);
c = DgetC(0);
if (c == DEOF || !alnum(c))
break;
}
Strbuf_terminate(name);
unDredc(c);
vp = adrof(name->s);
}
if (bitset) {
dolp = (vp || getenv(short2str(name->s))) ? STR1 : STR0;
cleanup_until(name);
goto eatbrac;
}
if (vp == NULL || vp->vec == NULL) {
np = str2short(getenv(short2str(name->s)));
if (np) {
static Char *env_val; /* = NULL; */
cleanup_until(name);
fixDolMod();
if (length) {
addla(putn((tcsh_number_t)Strlen(np)));
} else {
xfree(env_val);
env_val = Strsave(np);
setDolp(env_val);
}
goto eatbrac;
}
udvar(name->s);
/* NOTREACHED */
}
cleanup_until(name);
c = DgetC(0);
upb = blklen(vp->vec);
if (dimen == 0 && subscr == 0 && c == '[') {
name = Strbuf_alloc();
cleanup_push(name, Strbuf_free);
np = name->s;
for (;;) {
c = DgetC(DODOL); /* Allow $ expand within [ ] */
if (c == ']')
break;
if (c == '\n' || c == DEOF)
stderror(ERR_INCBR);
Strbuf_append1(name, (Char) c);
}
Strbuf_terminate(name);
np = name->s;
if (dolp || dolcnt) /* $ exp must end before ] */
stderror(ERR_EXPORD);
if (!*np)
stderror(ERR_SYNTAX);
if (Isdigit(*np)) {
int i;
for (i = 0; Isdigit(*np); i = i * 10 + *np++ - '0')
continue;
if (i < 0 || (i > upb && !any("-*", *np))) {
cleanup_until(name);
dolerror(vp->v_name);
return;
}
lwb = i;
if (!*np)
upb = lwb, np = STRstar;
}
if (*np == '*')
np++;
else if (*np != '-')
stderror(ERR_MISSING, '-');
else {
int i = upb;
np++;
if (Isdigit(*np)) {
i = 0;
while (Isdigit(*np))
i = i * 10 + *np++ - '0';
if (i < 0 || i > upb) {
cleanup_until(name);
dolerror(vp->v_name);
return;
}
}
if (i < lwb)
upb = lwb - 1;
else
upb = i;
}
if (lwb == 0) {
if (upb != 0) {
cleanup_until(name);
dolerror(vp->v_name);
return;
}
upb = -1;
}
if (*np)
stderror(ERR_SYNTAX);
cleanup_until(name);
}
else {
if (subscr > 0) {
if (subscr > upb)
lwb = 1, upb = 0;
else
lwb = upb = subscr;
}
unDredc(c);
}
if (dimen) {
/* this is a kludge. It prevents Dgetdol() from */
/* pushing erroneous ${#<error> values into the labuf. */
if (sc == '{') {
c = Dredc();
if (c != '}')
stderror(ERR_MISSING, '}');
unDredc(c);
}
addla(putn((tcsh_number_t)(upb - lwb + 1)));
}
else if (length) {
int i;
for (i = lwb - 1, length = 0; i < upb; i++)
length += Strlen(vp->vec[i]);
#ifdef notdef
/* We don't want that, since we can always compute it by adding $#xxx */
length += i - 1; /* Add the number of spaces in */
#endif
addla(putn((tcsh_number_t)length));
}
else {
eatmod:
fixDolMod();
dolnxt = &vp->vec[lwb - 1];
dolcnt = upb - lwb + 1;
}
eatbrac:
if (sc == '{') {
c = Dredc();
if (c != '}')
stderror(ERR_MISSING, '}');
}
}
int
main(int argc, char *argv[])
{
struct sigaction oact;
Char *cp;
char *tcp, **tempv;
const char *ecp;
sigset_t nsigset;
int f;
cshin = stdin;
cshout = stdout;
csherr = stderr;
setprogname(argv[0]);
settimes(); /* Immed. estab. timing base */
/*
* Initialize non constant strings
*/
#ifdef _PATH_BSHELL
STR_BSHELL = SAVE(_PATH_BSHELL);
#endif
#ifdef _PATH_CSHELL
STR_SHELLPATH = SAVE(_PATH_CSHELL);
#endif
STR_environ = blk2short(environ);
environ = short2blk(STR_environ); /* So that we can free it */
STR_WORD_CHARS = SAVE(WORD_CHARS);
HIST = '!';
HISTSUB = '^';
word_chars = STR_WORD_CHARS;
tempv = argv;
if (eq(str2short(tempv[0]), 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> and we had
* no arguments 2. or we were invoked only with the -l flag
*/
loginsh = (**tempv == '-' && argc == 1) ||
(argc == 2 && tempv[1][0] == '-' && tempv[1][1] == 'l' &&
tempv[1][2] == '\0');
if (loginsh && **tempv != '-') {
/*
* Mangle the argv space
*/
tempv[1][0] = '\0';
tempv[1][1] = '\0';
tempv[1] = NULL;
for (tcp = *tempv; *tcp++;)
continue;
for (tcp--; tcp >= *tempv; tcp--)
tcp[1] = tcp[0];
*++tcp = '-';
argc--;
}
if (loginsh)
(void)time(&chktim);
AsciiOnly = 1;
#ifdef NLS
(void)setlocale(LC_ALL, "");
{
int k;
for (k = 0200; k <= 0377 && !Isprint(k); k++)
continue;
AsciiOnly = k > 0377;
}
#else
AsciiOnly = getenv("LANG") == NULL && getenv("LC_CTYPE") == NULL;
#endif /* NLS */
/*
* 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();
/*
* XXX: This is to keep programs that use stdio happy.
* what we really want is freunopen() ....
* Closing cshin cshout and csherr (which are really stdin stdout
* and stderr at this point and then reopening them in the same order
* gives us again stdin == cshin stdout == cshout and stderr == csherr.
* If that was not the case builtins like printf that use stdio
* would break. But in any case we could fix that with memcpy and
* a bit of pointer manipulation...
* Fortunately this is not needed under the current implementation
* of stdio.
*/
(void)fclose(cshin);
(void)fclose(cshout);
(void)fclose(csherr);
if (!(cshin = funopen((void *) &SHIN, readf, writef, seekf, closef)))
exit(1);
if (!(cshout = funopen((void *) &SHOUT, readf, writef, seekf, closef)))
exit(1);
if (!(csherr = funopen((void *) &SHERR, readf, writef, seekf, closef)))
exit(1);
(void)setvbuf(cshin, NULL, _IOLBF, 0);
(void)setvbuf(cshout, NULL, _IOLBF, 0);
(void)setvbuf(csherr, NULL, _IOLBF, 0);
/*
* Initialize the shell variables. ARGV and PROMPT are initialized later.
* STATUS is also munged in several places. CHILD is munged when
* forking/waiting
*/
set(STRstatus, Strsave(STR0));
if ((ecp = getenv("HOME")) != NULL)
cp = quote(SAVE(ecp));
else
cp = NULL;
if (cp == NULL)
fast = 1; /* No home -> can't read scripts */
else
set(STRhome, cp);
dinit(cp); /* dinit thinks that HOME == cwd in a login
* shell */
/*
* Grab other useful things from the environment. Should we grab
* everything??
*/
if ((ecp = getenv("LOGNAME")) != NULL ||
(ecp = getenv("USER")) != NULL)
set(STRuser, quote(SAVE(ecp)));
if ((ecp = getenv("TERM")) != NULL)
set(STRterm, quote(SAVE(ecp)));
/*
* Re-initialize path if set in environment
*/
if ((ecp = getenv("PATH")) == NULL) {
#ifdef _PATH_DEFPATH
importpath(str2short(_PATH_DEFPATH));
#else
setq(STRpath, defaultpath(), &shvhed);
#endif
} else {
importpath(str2short(ecp));
}
set(STRshell, Strsave(STR_SHELLPATH));
doldol = putn((int) getpid()); /* For $$ */
shtemp = Strspl(STRtmpsh, doldol); /* For << */
/*
* 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.
*/
/* parents interruptibility */
(void)sigaction(SIGINT, NULL, &oact);
parintr = oact.sa_handler;
(void)sigaction(SIGTERM, NULL, &oact);
parterm = oact.sa_handler;
/* catch these all, login shell or not */
(void)signal(SIGHUP, phup); /* exit processing on HUP */
(void)signal(SIGXCPU, phup); /* ...and on XCPU */
(void)signal(SIGXFSZ, phup); /* ...and on XFSZ */
/*
* 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++;
arginp = SAVE(tempv[0]);
prompt = 0;
nofile = 1;
break;
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;
case 'v': /* -v Echo hist expanded input */
nverbose = 1; /* ... later */
break;
case 'x': /* -x Echo just before execution */
nexececho = 1; /* ... later */
break;
case 'V': /* -V Echo hist expanded input */
setNS(STRverbose); /* NOW! */
break;
case 'X': /* -X Echo just before execution */
setNS(STRecho); /* NOW! */
break;
} while (*tcp);
tempv++, argc--;
}
if (quitit) /* With all due haste, for debugging */
(void)signal(SIGQUIT, SIG_DFL);
/*
* Unless prevented by -, -c, -i, -s, or -t, if there are remaining
* arguments the first of them is the name of a shell file from which to
* read commands.
*/
if (nofile == 0 && argc > 0) {
nofile = open(tempv[0], O_RDONLY);
if (nofile < 0) {
child = 1; /* So this doesn't return */
stderror(ERR_SYSTEM, tempv[0], strerror(errno));
}
ffile = SAVE(tempv[0]);
/*
* Replace FSHIN. Handle /dev/std{in,out,err} specially
* since once they are closed we cannot open them again.
* In that case we use our own saved descriptors
*/
if ((SHIN = dmove(nofile, FSHIN)) < 0)
switch(nofile) {
case 0:
SHIN = FSHIN;
break;
case 1:
SHIN = FSHOUT;
break;
case 2:
SHIN = FSHERR;
break;
default:
stderror(ERR_SYSTEM, tempv[0], strerror(errno));
/* NOTREACHED */
}
(void)ioctl(SHIN, FIOCLEX, NULL);
prompt = 0;
/* argc not used any more */ tempv++;
}
intty = isatty(SHIN);
intty |= intact;
if (intty || (intact && isatty(SHOUT))) {
if (!batch && (uid != euid || gid != egid)) {
errno = EACCES;
child = 1; /* So this doesn't return */
stderror(ERR_SYSTEM, "csh", strerror(errno));
}
}
/*
* Decide whether we should play with signals or not. If we are explicitly
* told (via -i, or -) or we are a login shell (arg0 starts with -) or the
* input and output are both the ttys("csh", or "csh</dev/ttyx>/dev/ttyx")
* Note that in only the login shell is it likely that parent may have set
* signals to be ignored
*/
if (loginsh || intact || (intty && isatty(SHOUT)))
setintr = 1;
settell();
/*
* Save the remaining arguments in argv.
*/
setq(STRargv, blk2short(tempv), &shvhed);
/*
* Set up the prompt.
*/
if (prompt) {
set(STRprompt, Strsave(uid == 0 ? STRsymhash : STRsymcent));
/* that's a meta-questionmark */
set(STRprompt2, Strsave(STRmquestion));
}
/*
* If we are an interactive shell, then start fiddling with the signals;
* this is a tricky game.
*/
shpgrp = getpgrp();
opgrp = tpgrp = -1;
if (setintr) {
**argv = '-';
if (!quitit) /* Wary! */
(void)signal(SIGQUIT, SIG_IGN);
(void)signal(SIGINT, pintr);
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, NULL);
(void)signal(SIGTERM, SIG_IGN);
if (quitit == 0 && arginp == 0) {
(void)signal(SIGTSTP, SIG_IGN);
(void)signal(SIGTTIN, SIG_IGN);
(void)signal(SIGTTOU, SIG_IGN);
/*
* Wait till in foreground, in case someone stupidly runs csh &
* dont want to try to grab away the tty.
*/
if (isatty(FSHERR))
f = FSHERR;
else if (isatty(FSHOUT))
f = FSHOUT;
else if (isatty(OLDSTD))
f = OLDSTD;
else
f = -1;
retry:
if ((tpgrp = tcgetpgrp(f)) != -1) {
if (tpgrp != shpgrp) {
sig_t old = signal(SIGTTIN, SIG_DFL);
(void)kill(0, SIGTTIN);
(void)signal(SIGTTIN, old);
goto retry;
}
opgrp = shpgrp;
shpgrp = getpid();
tpgrp = shpgrp;
/*
* Setpgid will fail if we are a session leader and
* mypid == mypgrp (POSIX 4.3.3)
*/
if (opgrp != shpgrp)
if (setpgid(0, shpgrp) == -1)
goto notty;
/*
* We do that after we set our process group, to make sure
* that the process group belongs to a process in the same
* session as the tty (our process and our group) (POSIX 7.2.4)
*/
if (tcsetpgrp(f, shpgrp) == -1)
goto notty;
(void)ioctl(dcopy(f, FSHTTY), FIOCLEX, NULL);
}
if (tpgrp == -1) {
notty:
(void)fprintf(csherr, "Warning: no access to tty (%s).\n",
strerror(errno));
(void)fprintf(csherr, "Thus no job control in this shell.\n");
}
}
}
if ((setintr == 0) && (parintr == SIG_DFL))
setintr = 1;
(void)signal(SIGCHLD, pchild); /* while signals not ready */
/*
* Set an exit here in case of an interrupt or error reading the shell
* start-up scripts.
*/
reenter = setexit(); /* PWP */
haderr = 0; /* In case second time through */
if (!fast && reenter == 0) {
/* Will have value(STRhome) here because set fast if don't */
{
sig_t oparintr;
sigset_t osigset;
int osetintr;
oparintr = parintr;
osetintr = setintr;
sigemptyset(&nsigset);
(void)sigaddset(&nsigset, SIGINT);
(void)sigprocmask(SIG_BLOCK, &nsigset, &osigset);
setintr = 0;
parintr = SIG_IGN; /* Disable onintr */
#ifdef _PATH_DOTCSHRC
(void)srcfile(_PATH_DOTCSHRC, 0, 0);
#endif
if (!fast && !arginp && !onelflg)
dohash(NULL, NULL);
#ifdef _PATH_DOTLOGIN
if (loginsh)
(void)srcfile(_PATH_DOTLOGIN, 0, 0);
#endif
(void)sigprocmask(SIG_SETMASK, &osigset, NULL);
setintr = osetintr;
parintr = oparintr;
}
(void)srccat(value(STRhome), STRsldotcshrc);
if (!fast && !arginp && !onelflg && !havhash)
dohash(NULL, NULL);
/*
* Source history before .login so that it is available in .login
*/
if ((cp = value(STRhistfile)) != STRNULL)
loadhist[2] = cp;
dosource(loadhist, NULL);
if (loginsh)
(void)srccat(value(STRhome), STRsldotlogin);
}
/*
* Now are ready for the -v and -x flags
*/
if (nverbose)
setNS(STRverbose);
if (nexececho)
setNS(STRecho);
/*
* All the rest of the world is inside this call. The argument to process
* indicates whether it should catch "error unwinds". Thus if we are a
* interactive shell our call here will never return by being blown past on
* an error.
*/
process(setintr);
/*
* Mop-up.
*/
if (intty) {
if (loginsh) {
(void)fprintf(cshout, "logout\n");
(void)close(SHIN);
child = 1;
goodbye();
}
else {
(void)fprintf(cshout, "exit\n");
}
}
rechist();
exitstat();
/* NOTREACHED */
}
/*
* dcanon - canonicalize the pathname, removing excess ./ and ../ etc.
* we are of course assuming that the file system is standardly
* constructed (always have ..'s, directories have links)
*/
Char *
dcanon(Char *cp, Char *p)
{
Char *sp;
Char *p1, *p2; /* general purpose */
int slash;
#ifdef HAVE_SLASHSLASH
int slashslash;
#endif /* HAVE_SLASHSLASH */
size_t clen;
#ifdef S_IFLNK /* if we have symlinks */
Char *mlink, *newcp;
char *tlink;
size_t cc;
#endif /* S_IFLNK */
clen = Strlen(cp);
/*
* christos: if the path given does not start with a slash prepend cwd. If
* cwd does not start with a slash or the result would be too long try to
* correct it.
*/
if (!ABSOLUTEP(cp)) {
Char *tmpdir;
size_t len;
p1 = varval(STRcwd);
if (p1 == STRNULL || !ABSOLUTEP(p1)) {
Char *new_cwd = agetcwd();
if (new_cwd == NULL) {
xprintf("%s: %s\n", progname, strerror(errno));
setcopy(STRcwd, str2short("/"), VAR_READWRITE|VAR_NOGLOB);
}
else
setv(STRcwd, new_cwd, VAR_READWRITE|VAR_NOGLOB);
p1 = varval(STRcwd);
}
len = Strlen(p1);
tmpdir = xmalloc((len + clen + 2) * sizeof (*tmpdir));
(void) Strcpy(tmpdir, p1);
(void) Strcat(tmpdir, STRslash);
(void) Strcat(tmpdir, cp);
xfree(cp);
cp = p = tmpdir;
}
#ifdef HAVE_SLASHSLASH
slashslash = (cp[0] == '/' && cp[1] == '/');
#endif /* HAVE_SLASHSLASH */
while (*p) { /* for each component */
sp = p; /* save slash address */
while (*++p == '/') /* flush extra slashes */
continue;
if (p != ++sp)
for (p1 = sp, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
p = sp; /* save start of component */
slash = 0;
if (*p)
while (*++p) /* find next slash or end of path */
if (*p == '/') {
slash = 1;
*p = 0;
break;
}
#ifdef HAVE_SLASHSLASH
if (&cp[1] == sp && sp[0] == '.' && sp[1] == '.' && sp[2] == '\0')
slashslash = 1;
#endif /* HAVE_SLASHSLASH */
if (*sp == '\0') { /* if component is null */
if (--sp == cp) /* if path is one char (i.e. /) */
break;
else
*sp = '\0';
}
else if (sp[0] == '.' && sp[1] == 0) {
if (slash) {
for (p1 = sp, p2 = p + 1; (*p1++ = *p2++) != '\0';)
continue;
p = --sp;
}
else if (--sp != cp)
*sp = '\0';
else
sp[1] = '\0';
}
else if (sp[0] == '.' && sp[1] == '.' && sp[2] == 0) {
/*
* We have something like "yyy/xxx/..", where "yyy" can be null or
* a path starting at /, and "xxx" is a single component. Before
* compressing "xxx/..", we want to expand "yyy/xxx", if it is a
* symbolic link.
*/
*--sp = 0; /* form the pathname for readlink */
#ifdef S_IFLNK /* if we have symlinks */
if (sp != cp && /* symlinks != SYM_IGNORE && */
(tlink = areadlink(short2str(cp))) != NULL) {
mlink = str2short(tlink);
xfree(tlink);
if (slash)
*p = '/';
/*
* Point p to the '/' in "/..", and restore the '/'.
*/
*(p = sp) = '/';
if (*mlink != '/') {
/*
* Relative path, expand it between the "yyy/" and the
* "/..". First, back sp up to the character past "yyy/".
*/
while (*--sp != '/')
continue;
sp++;
*sp = 0;
/*
* New length is "yyy/" + mlink + "/.." and rest
*/
p1 = newcp = xmalloc(((sp - cp) + Strlen(mlink) +
Strlen(p) + 1) * sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = cp; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = mlink; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at expanded "/xxx".
*/
p = sp - cp - 1 + newcp;
}
else {
newcp = Strspl(mlink, p);
/*
* Restart canonicalization at beginning
*/
p = newcp;
}
xfree(cp);
cp = newcp;
#ifdef HAVE_SLASHSLASH
slashslash = (cp[0] == '/' && cp[1] == '/');
#endif /* HAVE_SLASHSLASH */
continue; /* canonicalize the link */
}
#endif /* S_IFLNK */
*sp = '/';
if (sp != cp)
while (*--sp != '/')
continue;
if (slash) {
for (p1 = sp + 1, p2 = p + 1; (*p1++ = *p2++) != '\0';)
continue;
p = sp;
}
else if (cp == sp)
*++sp = '\0';
else
*sp = '\0';
}
else { /* normal dir name (not . or .. or nothing) */
#ifdef S_IFLNK /* if we have symlinks */
if (sp != cp && symlinks == SYM_CHASE &&
(tlink = areadlink(short2str(cp))) != NULL) {
mlink = str2short(tlink);
xfree(tlink);
/*
* restore the '/'.
*/
if (slash)
*p = '/';
/*
* point sp to p (rather than backing up).
*/
sp = p;
if (*mlink != '/') {
/*
* Relative path, expand it between the "yyy/" and the
* remainder. First, back sp up to the character past
* "yyy/".
*/
while (*--sp != '/')
continue;
sp++;
*sp = 0;
/*
* New length is "yyy/" + mlink + "/.." and rest
*/
p1 = newcp = xmalloc(((sp - cp) + Strlen(mlink) +
Strlen(p) + 1) * sizeof(Char));
/*
* Copy new path into newcp
*/
for (p2 = cp; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = mlink; (*p1++ = *p2++) != '\0';)
continue;
for (p1--, p2 = p; (*p1++ = *p2++) != '\0';)
continue;
/*
* Restart canonicalization at expanded "/xxx".
*/
p = sp - cp - 1 + newcp;
}
else {
newcp = Strspl(mlink, p);
/*
* Restart canonicalization at beginning
*/
p = newcp;
}
xfree(cp);
cp = newcp;
#ifdef HAVE_SLASHSLASH
slashslash = (cp[0] == '/' && cp[1] == '/');
#endif /* HAVE_SLASHSLASH */
continue; /* canonicalize the mlink */
}
#endif /* S_IFLNK */
if (slash)
*p = '/';
}
}
/*
* fix home...
*/
#ifdef S_IFLNK
p1 = varval(STRhome);
cc = Strlen(p1);
/*
* See if we're not in a subdir of STRhome
*/
if (p1 && *p1 == '/' && (Strncmp(p1, cp, cc) != 0 ||
(cp[cc] != '/' && cp[cc] != '\0'))) {
static ino_t home_ino = (ino_t) -1;
static dev_t home_dev = (dev_t) -1;
static Char *home_ptr = NULL;
struct stat statbuf;
int found;
Char *copy;
/*
* Get dev and ino of STRhome
*/
if (home_ptr != p1 &&
stat(short2str(p1), &statbuf) != -1) {
home_dev = statbuf.st_dev;
home_ino = statbuf.st_ino;
home_ptr = p1;
}
/*
* Start comparing dev & ino backwards
*/
p2 = copy = Strsave(cp);
found = 0;
while (*p2 && stat(short2str(p2), &statbuf) != -1) {
if (DEV_DEV_COMPARE(statbuf.st_dev, home_dev) &&
statbuf.st_ino == home_ino) {
found = 1;
break;
}
if ((sp = Strrchr(p2, '/')) != NULL)
*sp = '\0';
}
/*
* See if we found it
*/
if (*p2 && found) {
/*
* Use STRhome to make '~' work
*/
newcp = Strspl(p1, cp + Strlen(p2));
xfree(cp);
cp = newcp;
}
xfree(copy);
}
#endif /* S_IFLNK */
#ifdef HAVE_SLASHSLASH
if (slashslash) {
if (cp[1] != '/') {
p = xmalloc((Strlen(cp) + 2) * sizeof(Char));
*p = '/';
(void) Strcpy(&p[1], cp);
xfree(cp);
cp = p;
}
}
if (cp[1] == '/' && cp[2] == '/') {
for (p1 = &cp[1], p2 = &cp[2]; (*p1++ = *p2++) != '\0';)
continue;
}
#endif /* HAVE_SLASHSLASH */
return cp;
}
/*ARGSUSED*/
void
dosched(Char **v, struct command *c)
{
struct sched_event *tp, **pp;
time_t cur_time;
int count, hours, minutes, dif_hour, dif_min;
Char *cp;
int relative; /* time specified as +hh:mm */
struct tm *ltp;
USE(c);
/* This is a major kludge because of a gcc linker */
/* Problem. It may or may not be needed for you */
#if defined(_MINIX) && !defined(_MINIX_VMD)
char kludge[10];
extern char *sprintf();
sprintf(kludge, CGETS(24, 1, "kludge"));
#endif /* _MINIX && !_MINIX_VMD */
v++;
cp = *v++;
if (cp == NULL) {
const Char *fmt;
if ((fmt = varval(STRsched)) == STRNULL)
fmt = str2short("%h\t%T\t%R\n");
/* print list of scheduled events */
for (count = 1, tp = sched_ptr; tp; count++, tp = tp->t_next) {
Char *buf, *str;
buf = blkexpand(tp->t_lex);
cleanup_push(buf, xfree);
str = tprintf(FMT_SCHED, fmt, short2str(buf), tp->t_when, &count);
cleanup_until(buf);
cleanup_push(str, xfree);
for (cp = str; *cp;)
xputwchar(*cp++);
cleanup_until(str);
}
return;
}
if (*cp == '-') {
/* remove item from list */
if (!sched_ptr)
stderror(ERR_NOSCHED);
if (*v)
stderror(ERR_SCHEDUSAGE);
count = atoi(short2str(++cp));
if (count <= 0)
stderror(ERR_SCHEDUSAGE);
pp = &sched_ptr;
tp = sched_ptr;
while (--count) {
if (tp->t_next == 0)
break;
else {
pp = &tp->t_next;
tp = tp->t_next;
}
}
if (count)
stderror(ERR_SCHEDEV);
*pp = tp->t_next;
blkfree(tp->t_lex);
xfree(tp);
return;
}
/* else, add an item to the list */
if (!*v)
stderror(ERR_SCHEDCOM);
relative = 0;
if (!Isdigit(*cp)) { /* not abs. time */
if (*cp != '+')
stderror(ERR_SCHEDUSAGE);
cp++, relative++;
}
minutes = 0;
hours = atoi(short2str(cp));
while (*cp && *cp != ':' && *cp != 'a' && *cp != 'p')
cp++;
if (*cp && *cp == ':')
minutes = atoi(short2str(++cp));
if ((hours < 0) || (minutes < 0) ||
(hours > 23) || (minutes > 59))
stderror(ERR_SCHEDTIME);
while (*cp && *cp != 'p' && *cp != 'a')
cp++;
if (*cp && relative)
stderror(ERR_SCHEDREL);
if (*cp == 'p')
hours += 12;
(void) time(&cur_time);
ltp = localtime(&cur_time);
if (relative) {
dif_hour = hours;
dif_min = minutes;
}
else {
if ((dif_hour = hours - ltp->tm_hour) < 0)
dif_hour += 24;
if ((dif_min = minutes - ltp->tm_min) < 0) {
dif_min += 60;
if ((--dif_hour) < 0)
dif_hour = 23;
}
}
tp = xcalloc(1, sizeof *tp);
#ifdef _SX
tp->t_when = cur_time - ltp->tm_sec + dif_hour * 3600 + dif_min * 60;
#else /* _SX */
tp->t_when = cur_time - ltp->tm_sec + dif_hour * 3600L + dif_min * 60L;
#endif /* _SX */
/* use of tm_sec: get to beginning of minute. */
for (pp = &sched_ptr; *pp != NULL && tp->t_when >= (*pp)->t_when;
pp = &(*pp)->t_next)
;
tp->t_next = *pp;
*pp = tp;
tp->t_lex = saveblk(v);
}
/*ARGSUSED*/
void
dosetpath(Char **arglist, struct command *c)
{
extern char *getenv();
Char **pathvars, **cmdargs;
char **spaths, **cpaths, **cmds;
char *tcp;
unsigned int npaths, ncmds;
int i, sysflag;
pintr_disabled++;
cleanup_push(&pintr_disabled, disabled_cleanup);
/*
* setpath(3) uses stdio and we want 0, 1, 2 to work...
*/
if (!didfds) {
(void) dcopy(SHIN, 0);
(void) dcopy(SHOUT, 1);
(void) dcopy(SHDIAG, 2);
didfds = 1;
}
for (i = 1; arglist[i] && (arglist[i][0] != '-'); i++);
npaths = i - 1;
cmdargs = &arglist[i];
for (; arglist[i]; i++);
ncmds = i - npaths - 1;
if (npaths) {
sysflag = 0;
pathvars = &arglist[1];
}
else {
sysflag = 1;
npaths = (sizeof syspaths / sizeof *syspaths) - 1;
pathvars = syspaths;
}
/* note that npaths != 0 */
spaths = xmalloc(npaths * sizeof *spaths);
setzero(spaths, npaths * sizeof *spaths);
cpaths = xmalloc((npaths + 1) * sizeof *cpaths);
setzero(cpaths, (npaths + 1) * sizeof *cpaths);
cmds = xmalloc((ncmds + 1) * sizeof *cmds);
setzero(cmds, (ncmds + 1) * sizeof *cmds);
for (i = 0; i < npaths; i++) {
char *val = getenv(short2str(pathvars[i]));
if (val == NULL)
val = "";
spaths[i] = xmalloc((Strlen(pathvars[i]) + strlen(val) + 2) *
sizeof **spaths);
(void) strcpy(spaths[i], short2str(pathvars[i]));
(void) strcat(spaths[i], "=");
(void) strcat(spaths[i], val);
cpaths[i] = spaths[i];
}
for (i = 0; i < ncmds; i++) {
Char *val = globone(cmdargs[i], G_ERROR);/*FIXRESET*/
if (val == NULL)
goto abortpath;
cmds[i] = strsave(short2str(val));
}
if (setpath(cpaths, cmds, LOCALSYSPATH, sysflag, 1) < 0) {
abortpath:
if (spaths) {
for (i = 0; i < npaths; i++)
xfree(spaths[i]);
xfree(spaths);
}
xfree(cpaths);
if (cmds) {
for (i = 0; i < ncmds; i++)
xfree(cmds[i]);
xfree(cmds);
}
cleanup_until(&pintr_disabled);
donefds();
return;
}
for (i = 0; i < npaths; i++) {
Char *val, *name;
name = str2short(cpaths[i]);
for (val = str2short(cpaths[i]); val && *val && *val != '='; val++);
if (val && *val == '=') {
*val++ = '\0';
tsetenv(name, val);/*FIXRESET*/
if (Strcmp(name, STRKPATH) == 0) {
importpath(val);/*FIXRESET*/
if (havhash)
dohash(NULL, NULL);/*FIXRESET*/
}
*--val = '=';
}
}
cleanup_until(&pintr_disabled);
donefds();
}
static int
tellmewhat(struct wordent *lexp, Char *str, int len)
{
int i;
struct biltins *bptr;
struct wordent *sp = lexp->next;
bool aliased = 0, found;
Char *s0, *s1, *s2, *cmd;
Char qc;
if (adrof1(sp->word, &aliases)) {
alias(lexp);
sp = lexp->next;
aliased = 1;
}
s0 = sp->word; /* to get the memory freeing right... */
/* handle quoted alias hack */
if ((*(sp->word) & (QUOTE | TRIM)) == QUOTE)
(sp->word)++;
/* do quoting, if it hasn't been done */
s1 = s2 = sp->word;
while (*s2)
switch (*s2) {
case '\'':
case '"':
qc = *s2++;
while (*s2 && *s2 != qc)
*s1++ = *s2++ | QUOTE;
if (*s2)
s2++;
break;
case '\\':
if (*++s2)
*s1++ = *s2++ | QUOTE;
break;
default:
*s1++ = *s2++;
}
*s1 = '\0';
for (bptr = bfunc; bptr < &bfunc[nbfunc]; bptr++) {
if (eq(sp->word, str2short(bptr->bname))) {
if (str == NULL) {
if (aliased)
prlex(cshout, lexp);
(void) fprintf(cshout, "%s: shell built-in command.\n",
vis_str(sp->word));
}
else
(void) Strlcpy(str, sp->word, len/sizeof(Char));
sp->word = s0; /* we save and then restore this */
return 1;
}
}
sp->word = cmd = globone(sp->word, G_IGNORE);
if ((i = iscommand(sp->word)) != 0) {
Char **pv;
struct varent *v;
bool slash = any(short2str(sp->word), '/');
v = adrof(STRpath);
if (v == 0 || v->vec[0] == 0 || slash)
pv = justabs;
else
pv = v->vec;
while (--i)
pv++;
if (pv[0][0] == 0 || eq(pv[0], STRdot)) {
if (!slash) {
sp->word = Strspl(STRdotsl, sp->word);
prlex(cshout, lexp);
xfree(sp->word);
}
else
prlex(cshout, lexp);
}
else {
s1 = Strspl(*pv, STRslash);
sp->word = Strspl(s1, sp->word);
xfree(s1);
if (str == NULL)
prlex(cshout, lexp);
else
(void) Strlcpy(str, sp->word, len/sizeof(Char));
xfree(sp->word);
}
found = 1;
}
else {
if (str == NULL) {
if (aliased)
prlex(cshout, lexp);
(void) fprintf(csherr,
"%s: Command not found.\n", vis_str(sp->word));
}
else
(void) Strlcpy(str, sp->word, len/sizeof(Char));
found = 0;
}
sp->word = s0; /* we save and then restore this */
xfree(cmd);
return found;
}
void getmachine (void) {
char temp[256];
char *vendor, *ostype;
OSVERSIONINFO osver;
SYSTEM_INFO sysinfo;
memset(&osver,0,sizeof(osver));
memset(&sysinfo,0,sizeof(sysinfo));
vendor = "Microsoft";
tsetenv(STRVENDOR,str2short(vendor));
osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&osver)) {
MessageBox(NULL,"GetVersionEx failed in getmachine",
"tcsh",MB_ICONHAND);
ExitProcess(0xFF);
}
GetSystemInfo(&sysinfo);
if(osver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
char *ostr;
switch(osver.dwMajorVersion)
{
case 5:
switch (osver.dwMinorVersion)
{
case 0:
ostype = "Windows2000";
ostr = "Windows 2000";
break;
case 1:
ostype = "WindowsXP";
ostr = "Windows XP";
break;
case 2:
ostype = "WindowsServer2003";
ostr = "Windows Server 2003";
break;
default:
ostype = "Windows-Post-2000";
ostr = "Windows Post Windows-2000";
}
break;
default:
ostype = "WindowsNT";
ostr = "Windows NT";
}
wsprintf(temp,"%s %d.%d Build %d (%s)",
ostr,
osver.dwMajorVersion,osver.dwMinorVersion,
osver.dwBuildNumber,
osver.szCSDVersion[0]?osver.szCSDVersion:"");
tsetenv(STRHOSTTYPE,str2short(temp));
}
else if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
ostype = "Windows9x";
wsprintf(temp,"Win9x %d.%d:%d",osver.dwMajorVersion,osver.dwMinorVersion,
LOWORD(osver.dwBuildNumber));
tsetenv(STRHOSTTYPE,str2short(temp));
}
else {
MessageBox(NULL,"Unknown platform","tcsh",MB_ICONHAND);
}
tsetenv(STROSTYPE,str2short(ostype));
switch (sysinfo.wProcessorArchitecture) {
case PROCESSOR_ARCHITECTURE_INTEL:
if ( ( sysinfo.wProcessorLevel < 3) ||
( sysinfo.wProcessorLevel > 9) )
sysinfo.wProcessorLevel = 3;
wsprintf(temp,"i%d86",sysinfo.wProcessorLevel);
break;
case PROCESSOR_ARCHITECTURE_ALPHA:
wsprintf(temp,"Alpha");
break;
case PROCESSOR_ARCHITECTURE_MIPS:
wsprintf(temp,"Mips");
break;
case PROCESSOR_ARCHITECTURE_PPC:
wsprintf(temp,"PPC");
break;
default:
wsprintf(temp,"Unknown");
break;
}
tsetenv(STRMACHTYPE,str2short(temp));
}
