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freebsd-ports/shells/v7sh/files/patch-name.c
Pav Lucistnik 6b787b91fc Add v7sh, the original Steve R. Bourne shell from the 7th edition Unix including 
System III, 4.3BSD-Reno, Ultrix 3.1 and `home made'' fixes and enhancements

PR:		ports/68127
Submitted by:	Cyrille Lefevre <cyrille.lefevre@laposte.net>
2004-06-22 08:24:19 +00:00

397 lines
7.5 KiB
C
Raw Blame History

diff -u -x CVS -x work -x core -x *.core -x #* -x *~ -x *.orig -x *.rej -I $Id.*$ -I $.+BSD.*$ name.c.orig name.c
--- name.c.orig Fri Jun 4 02:51:02 2004
+++ name.c Sat Jun 19 18:42:23 2004
@@ -9,33 +9,36 @@
#include "defs.h"
-PROC BOOL chkid();
+LOCAL BOOL chkid(CSTRING);
+LOCAL VOID namwalk(NAMPTR);
+LOCAL STRING staknam(NAMPTR);
+LOCAL VOID countnam(NAMPTR);
+LOCAL VOID pushnam(NAMPTR);
+
+NAMNOD ps2nod = { NIL, NIL, ps2name, NIL,NIL,0},
+ fngnod = { NIL, NIL, fngname, NIL,NIL,0},
+ pathnod = { NIL, NIL, pathname, NIL,NIL,0},
+ ifsnod = { NIL, NIL, ifsname, NIL,NIL,0},
+ ps1nod = { &pathnod, &ps2nod, ps1name, NIL,NIL,0},
+ homenod = { &fngnod, &ifsnod, homename, NIL,NIL,0},
+ mailnod = { &homenod, &ps1nod, mailname, NIL,NIL,0};
-
-NAMNOD ps2nod = { NIL, NIL, ps2name},
- fngnod = { NIL, NIL, fngname},
- pathnod = { NIL, NIL, pathname},
- ifsnod = { NIL, NIL, ifsname},
- ps1nod = { &pathnod, &ps2nod, ps1name},
- homenod = { &fngnod, &ifsnod, homename},
- mailnod = { &homenod, &ps1nod, mailname};
-
-NAMPTR namep = &mailnod;
+LOCAL NAMPTR namep = &mailnod;
/* ======== variable and string handling ======== */
-syslook(w,syswds)
+INT syslook(w,syswds)
STRING w;
SYSTAB syswds;
{
- REG CHAR first;
- REG STRING s;
+ REG INT first;
+ REG CSTRING s;
REG SYSPTR syscan;
syscan=syswds; first = *w;
- WHILE s=syscan->sysnam
+ WHILE (s=syscan->sysnam)!=NIL /* GCC */
DO IF first == *s
ANDF eq(w,s)
THEN return(syscan->sysval);
@@ -45,7 +48,7 @@
return(0);
}
-setlist(arg,xp)
+VOID setlist(arg,xp)
REG ARGPTR arg;
INT xp;
{
@@ -60,52 +63,107 @@
OD
}
+#if defined(SYSIII)
+INT setname(argi, xp)
+#else /* V7 */
VOID setname(argi, xp)
+#endif
STRING argi;
INT xp;
{
+#if defined(SYSIII)
+ INT rsflag=1; /* local restricted flag */
+#endif
REG STRING argscan=argi;
REG NAMPTR n;
- IF letter(*argscan)
- THEN WHILE alphanum(*argscan) DO argscan++ OD
+ IF letter((INT) *argscan)
+ THEN WHILE alphanum((INT) *argscan) DO argscan++ OD
IF *argscan=='='
+ /* make name a cohesive string */
THEN *argscan = 0;
+#if defined(SYSIII)
+ /* restricted stuff excluded from research */
+ IF eq(argi, "SHELL") ANDF !(flags&rshflg)
+ THEN argscan++;
+ IF any('r', simple(argscan))
+ THEN rsflag=0; /* restricted shell */
+ FI
+ argscan--;
+ FI
+ IF eq(argi,pathname) ANDF (flags&rshflg) /* cannot set PATH */
+ THEN failed(argi,restricted);
+ /*NOTREACHED*/
+ ELIF eq(argi, "SHELL") ANDF (flags&rshflg)
+ THEN failed(argi, restricted);
+ /*NOTREACHED*/
+ ELSE
+#endif
n=lookup(argi);
*argscan++ = '=';
attrib(n, xp);
IF xp&N_ENVNAM
+#if defined(RENO)
+ THEN
+ /*
+ * Importing IFS can be very dangerous
+ */
+ IF !bcmp(argi, "IFS=", sizeof("IFS=") - 1)
+ THEN
+ UID uid;
+ IF (uid = getuid())!=geteuid() ORF !uid
+ THEN
+#if defined(SYSIII)
+ return(0);
+#else /* V7 */
+ return;
+#endif
+ FI
+ FI
+ n->namenv = n->namval = argscan;
+#else /* V7 */
THEN n->namenv = n->namval = argscan;
+#endif
ELSE assign(n, argscan);
FI
+#if defined(SYSIII)
+ return(rsflag);
+ FI
+#else /* V7 */
return;
+#endif
FI
FI
failed(argi,notid);
+ /*NOTREACHED*/
+#if defined(SYSIII)
+ return(0);
+#endif
}
-replace(a, v)
+VOID replace(a, v)
REG STRING *a;
- STRING v;
+ CSTRING v;
{
- free(*a); *a=make(v);
+ free((BLKPTR) *a); *a=make(v);
}
-dfault(n,v)
+VOID dfault(n,v)
NAMPTR n;
- STRING v;
+ CSTRING v;
{
IF n->namval==0
THEN assign(n,v)
FI
}
-assign(n,v)
+VOID assign(n,v)
NAMPTR n;
- STRING v;
+ CSTRING v;
{
IF n->namflg&N_RDONLY
THEN failed(n->namid,wtfailed);
+ /*NOTREACHED*/
ELSE replace(&n->namval,v);
FI
}
@@ -114,18 +172,24 @@
STRING *names;
{
FILEBLK fb;
- REG FILE f = &fb;
- REG CHAR c;
+ REG FILEPTR f = &fb;
+ REG INT c;
REG INT rc=0;
NAMPTR n=lookup(*names++); /* done now to avoid storage mess */
- STKPTR rel=relstak();
+ STKPTR rel=(STKPTR) relstak();
push(f); initf(dup(0));
- IF lseek(0,0L,1)==-1
+ IF lseek(0,(OFFSET) 0,SEEK_CUR)==-1
THEN f->fsiz=1;
FI
+#if defined(SYSIII)
+ /* strip leading IFS characters */
+ WHILE (any((c=nextc(0)), ifsnod.namval)) ANDF !(eolchar(c)) DONE
+ LOOP
+#else /* V7 */
LOOP c=nextc(0);
+#endif
IF (*names ANDF any(c, ifsnod.namval)) ORF eolchar(c)
THEN zerostak();
assign(n,absstak(rel)); setstak(rel);
@@ -135,8 +199,16 @@
FI
IF eolchar(c)
THEN break;
+#if defined(SYSIII)
+ ELSE /* strip imbedded IFS characters */
+ WHILE (any((c=nextc(0)), ifsnod.namval)) ANDF
+ !(eolchar(c)) DONE
+#endif
FI
ELSE pushstak(c);
+#if defined(SYSIII)
+ c=nextc(0);
+#endif
FI
POOL
WHILE n
@@ -145,12 +217,12 @@
OD
IF eof THEN rc=1 FI
- lseek(0, (long)(f->fnxt-f->fend), 1);
+ lseek(0, (OFFSET) (f->fnxt-f->fend), SEEK_CUR);
pop();
return(rc);
}
-assnum(p, i)
+VOID assnum(p, i)
STRING *p;
INT i;
{
@@ -158,27 +230,28 @@
}
STRING make(v)
- STRING v;
+ CSTRING v;
{
REG STRING p;
IF v
- THEN movstr(v,p=alloc(length(v)));
+ THEN movstr(v,p=(STRING) alloc((POS) length(v)));
return(p);
ELSE return(0);
FI
}
-NAMPTR lookup(nam)
- REG STRING nam;
+NAMPTR lookup(nam)
+ REG CSTRING nam;
{
REG NAMPTR nscan=namep;
- REG NAMPTR *prev;
+ REG NAMPTR *prev=NIL; /* GCC */
INT LR;
IF !chkid(nam)
THEN failed(nam,notid);
+ /*NOTREACHED*/
FI
WHILE nscan
DO IF (LR=cf(nam,nscan->namid))==0
@@ -191,7 +264,7 @@
OD
/* add name node */
- nscan=alloc(sizeof *nscan);
+ nscan=(NAMPTR) alloc(sizeof *nscan);
nscan->namlft=nscan->namrgt=NIL;
nscan->namid=make(nam);
nscan->namval=0; nscan->namflg=N_DEFAULT; nscan->namenv=0;
@@ -199,14 +272,14 @@
}
LOCAL BOOL chkid(nam)
- STRING nam;
+ CSTRING nam;
{
- REG CHAR * cp=nam;
+ REG CSTRING cp=nam;
- IF !letter(*cp)
+ IF !letter((INT) *cp)
THEN return(FALSE);
ELSE WHILE *++cp
- DO IF !alphanum(*cp)
+ DO IF !alphanum((INT) *cp)
THEN return(FALSE);
FI
OD
@@ -214,9 +287,10 @@
return(TRUE);
}
-LOCAL VOID (*namfn)();
-namscan(fn)
- VOID (*fn)();
+LOCAL VOID (*namfn)(NAMPTR);
+
+VOID namscan(fn)
+ VOID (*fn)(NAMPTR);
{
namfn=fn;
namwalk(namep);
@@ -238,7 +312,7 @@
REG STRING s;
sigchk();
- IF s=n->namval
+ IF (s=n->namval)!=NIL /* GCC */
THEN prs(n->namid);
prc('='); prs(s);
newline();
@@ -253,16 +327,16 @@
p=movstr(n->namid,staktop);
p=movstr("=",p);
p=movstr(n->namval,p);
- return(getstak(p+1-ADR(stakbot)));
+ return(getstak((POS) (p+1-ADR(stakbot))));
}
VOID exname(n)
REG NAMPTR n;
{
IF n->namflg&N_EXPORT
- THEN free(n->namenv);
+ THEN free((BLKPTR) n->namenv);
n->namenv = make(n->namval);
- ELSE free(n->namval);
+ ELSE free((BLKPTR) n->namval);
n->namval = make(n->namenv);
FI
}
@@ -281,6 +355,16 @@
FI
}
+#if defined(SYSIII)
+INT getenv()
+{
+ INT rsflag=1; /* local restricted flag */
+ REG STRING *e=environ;
+
+ WHILE *e DO rsflag=setname(*e++, N_ENVNAM) & rsflag OD
+ return(rsflag);
+}
+#else /* V7 */
VOID getenv()
{
REG STRING *e=environ;
@@ -288,18 +372,20 @@
WHILE *e
DO setname(*e++, N_ENVNAM) OD
}
+#endif
-LOCAL INT namec;
+LOCAL POS namec;
-VOID countnam(n)
+LOCAL VOID countnam(n)
NAMPTR n;
{
+ n=n; /* GCC */
namec++;
}
LOCAL STRING *argnam;
-VOID pushnam(n)
+LOCAL VOID pushnam(n)
NAMPTR n;
{
IF n->namval
@@ -313,7 +399,7 @@
namec=0;
namscan(countnam);
- argnam = er = getstak(namec*BYTESPERWORD+BYTESPERWORD);
+ argnam = er = (STRING *) getstak(namec*BYTESPERWORD+BYTESPERWORD);
namscan(pushnam);
*argnam++ = 0;
return(er);
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