AUSAM/source/S/ar.c
#
/*
* ar -- file archiver and library maintainer
*/
#define AUSAM /* mainly changes for 16-bit uids */
#define NARMAG 0177545
struct
{
char name[14];
long date;
#ifndef AUSAM
char uid;
char gid;
#else AUSAM
int uid;
#endif
int mode;
long size;
} arbuf;
struct
{
char minor;
char major;
int inumber;
int flags;
#ifndef AUSAM
char nlinks;
char usrid;
char grpid;
#else AUSAM
int usrid;
char nlinks;
#endif
char siz0;
int siz1;
int addr[8];
long adate;
long mdate;
} stbuf;
#define SKIP 1
#define IODD 2
#define OODD 4
#define HEAD 8
char *man
{
"mrxtdp"
};
char *opt
{
"uvbai"
};
long itol();
int done();
int rcmd();
int dcmd();
int xcmd();
int tcmd();
int pcmd();
int mcmd();
int (*comfun)();
char flg[26];
char **namv;
int namc;
char *arnam;
char *ponam;
char *tfnam;
char *tf1nam;
char *tf2nam;
char *file;
char name[16];
int af;
int tf;
int tf1;
int tf2;
int bastate;
int buf[256];
main(argc, argv)
char *argv[];
{
register i;
register char *cp;
for(i=1; i<4; i++)
if((signal(i, 1) & 1) == 0)
signal(i, done);
if(argc < 3)
usage();
cp = argv[1];
for(cp = argv[1]; *cp; cp++)
switch(*cp)
{
case 'v':
case 'u':
case 'a':
case 'b':
case 'i':
flg[*cp - 'a']++;
continue;
case 'r':
setcom(rcmd);
continue;
case 'd':
setcom(dcmd);
continue;
case 'x':
setcom(xcmd);
continue;
case 't':
setcom(tcmd);
continue;
case 'p':
setcom(pcmd);
continue;
case 'm':
setcom(mcmd);
continue;
default:
printf("bad option `%c'\n", *cp);
done();
}
if(flg['i'-'a'])
flg['b'-'a']++;
if(flg['a'-'a'] || flg['b'-'a'])
{
bastate = 1;
ponam = trim(argv[2]);
argv++;
argc--;
if(argc < 3)
usage();
}
arnam = argv[2];
namv = argv+3;
namc = argc-3;
if(comfun == 0)
{
if(flg['u'-'a'] == 0)
{
printf("one of [%s] must be specified\n", man);
done();
}
setcom(rcmd);
}
(*comfun)();
notfound();
done();
}
setcom(fun)
int (*fun)();
{
if(comfun != 0)
{
printf("only one of [%s] allowed\n", man);
done();
}
comfun = fun;
}
rcmd()
{
register f;
init();
if(getaf())
{
printf("creating %s\n", arnam);
cleanup();
return;
}
while(!getdir())
{
bamatch();
if(namc == 0 || match())
{
f = stats();
if(f < 0)
{
if(namc)
printf("cannot open %s\n", file);
goto cp;
}
if(flg['u'-'a'])
if(stbuf.mdate <= arbuf.date)
{
close(f);
goto cp;
}
mesg('r');
copyfil(af, -1, IODD+SKIP);
movefil(f);
continue;
}
cp:
mesg('c');
copyfil(af, tf, IODD+OODD+HEAD);
}
cleanup();
}
dcmd()
{
init();
if(getaf())
noar();
while(!getdir())
{
if(match())
{
mesg('d');
copyfil(af, -1, IODD+SKIP);
continue;
}
mesg('c');
copyfil(af, tf, IODD+OODD+HEAD);
}
install();
}
xcmd()
{
register f;
if(getaf())
noar();
while(!getdir())
{
if(namc == 0 || match())
{
f = creat(file, arbuf.mode & 0777);
if(f < 0)
{
perror( file );
goto sk;
}
mesg('x');
copyfil(af, f, IODD);
close(f);
continue;
}
sk:
mesg('c');
copyfil(af, -1, IODD+SKIP);
}
}
pcmd()
{
if(getaf())
noar();
while(!getdir())
{
if(namc == 0 || match())
{
if(flg['v'-'a'])
printf("<%s>\n", file);
copyfil(af, 1, IODD);
continue;
}
copyfil(af, -1, IODD+SKIP);
}
}
mcmd()
{
init();
if(getaf())
noar();
tf2nam = mktemp("/tmp/v2XXXXX");
close(creat(tf2nam, 0600));
tf2 = open(tf2nam, 2);
if(tf2 < 0)
{
perror( tf2nam );
done();
}
while(!getdir())
{
bamatch();
if(match())
{
mesg('m');
copyfil(af, tf2, IODD+OODD+HEAD);
continue;
}
mesg('c');
copyfil(af, tf, IODD+OODD+HEAD);
}
install();
}
tcmd()
{
if(getaf())
noar();
while(!getdir())
{
if(namc == 0 || match())
{
if(flg['v'-'a'])
longt();
printf("%s\n", trim(file));
}
copyfil(af, -1, IODD+SKIP);
}
}
init()
{
tfnam = mktemp("/tmp/vXXXXX");
close(creat(tfnam, 0600));
tf = open(tfnam, 2);
if(tf < 0)
{
perror( tfnam );
done();
}
buf[0] = NARMAG;
write(tf, buf, 2);
}
getaf()
{
af = open(arnam, 0);
if(af < 0)
return(1);
buf[0] = 0;
read(af, buf, 2);
if(buf[0] != NARMAG)
{
printf("%s not in archive format\n", arnam);
done();
}
return(0);
}
usage()
{
printf("usage: ar [%s][%s] archive files ...\n", opt, man);
done();
}
noar()
{
printf("%s does not exist\n", arnam);
done();
}
done()
{
if(tfnam)
unlink(tfnam);
if(tf1nam)
unlink(tf1nam);
if(tf2nam)
unlink(tf2nam);
exit( 0 );
}
notfound()
{
register i;
for(i=0; i<namc; i++)
if(namv[i])
printf("%s not found\n", namv[i]);
}
cleanup()
{
register i, f;
for(i=0; i<namc; i++)
{
file = namv[i];
if(file == 0)
continue;
namv[i] = 0;
mesg('a');
f = stats();
if(f < 0)
{
printf("%s cannot open\n", file);
continue;
}
movefil(f);
}
install();
}
install()
{
register i;
for(i=1; i<4; i++)
signal(i, 1);
close(af);
af = creat(arnam, 0600);
if(af < 0)
{
perror( arnam );
done();
}
seek(tf, 0, 0);
while((i = read(tf, buf, 512)) > 0)
write(af, buf, i);
if(tf2nam)
{
seek(tf2, 0, 0);
while((i = read(tf2, buf, 512)) > 0)
write(af, buf, i);
}
if(tf1nam)
{
seek(tf1, 0, 0);
while((i = read(tf1, buf, 512)) > 0)
write(af, buf, i);
}
}
/*
* insert the file 'file'
* into the temporary file
*/
movefil(f)
{
register char *cp;
register i;
cp = trim(file);
for(i=0; i<14; i++)
if(arbuf.name[i] = *cp)
cp++;
arbuf.size = itol(stbuf.siz0&0377, stbuf.siz1);
arbuf.date = stbuf.mdate;
arbuf.uid = stbuf.usrid;
#ifndef AUSAM
arbuf.gid = stbuf.grpid;
#endif
arbuf.mode = stbuf.flags;
copyfil(f, tf, OODD+HEAD);
close(f);
}
stats()
{
register f;
f = open(file, 0);
if(f < 0)
return(f);
#ifndef AUSAM
if(fstat(f, &stbuf) < 0)
{
#else AUSAM
if ( newfstat( f, &stbuf ) < 0 )
{
#endif AUSAM
close(f);
return(-1);
}
return(f);
}
/*
* copy next file
* size given in arbuf
*/
copyfil(fi, fo, flag)
{
register i, o;
int pe;
if(flag & HEAD)
write(fo, &arbuf, sizeof arbuf);
pe = 0;
while(arbuf.size > 0)
{
i = o = 512;
if(arbuf.size < i)
{
i = o = arbuf.size;
if(i&1)
{
if(flag & IODD)
i++;
if(flag & OODD)
o++;
}
}
if(read(fi, buf, i) != i)
pe++;
if((flag & SKIP) == 0)
write(fo, buf, o);
arbuf.size =- 512;
}
if(pe)
phserr();
}
getdir()
{
register i;
i = read(af, &arbuf, sizeof arbuf);
if(i != sizeof arbuf)
{
if(tf1nam)
{
i = tf;
tf = tf1;
tf1 = i;
}
return(1);
}
for(i=0; i<14; i++)
name[i] = arbuf.name[i];
file = name;
return(0);
}
match()
{
register i;
for(i=0; i<namc; i++)
{
if(namv[i] == 0)
continue;
if(equal(trim(namv[i]), file))
{
file = namv[i];
namv[i] = 0;
return(1);
}
}
return(0);
}
bamatch()
{
register f;
switch(bastate)
{
case 1:
if(!equal(file, ponam))
return;
bastate = 2;
if(flg['a'-'a'])
return;
case 2:
bastate = 0;
tf1nam = mktemp("/tmp/v1XXXXX");
close(creat(tf1nam, 0600));
f = open(tf1nam, 2);
if(f < 0)
{
perror( tf1nam );
return;
}
tf1 = tf;
tf = f;
}
}
equal(s1, s2)
char *s1, *s2;
{
register char *p1, *p2;
p1 = s1;
p2 = s2;
while(*p1++ == *p2)
if(*p2++ == 0)
return(1);
return(0);
}
phserr()
{
printf("phase error on %s\n", file);
}
mesg(c)
{
if(flg['v'-'a'])
if(c != 'c' || flg['v'-'a'] > 1)
printf("%c - %s\n", c, file);
}
trim(s)
char *s;
{
register char *p1, *p2;
for(p1 = s; *p1; p1++)
;
while(p1 > s)
{
if(*--p1 != '/')
break;
*p1 = 0;
}
p2 = s;
for(p1 = s; *p1; p1++)
if(*p1 == '/')
p2 = p1+1;
return(p2);
}
#define IFMT 060000
#define ISARG 01000
#define LARGE 010000
#define SUID 04000
#define SGID 02000
#define ROWN 0400
#define WOWN 0200
#define XOWN 0100
#define RGRP 040
#define WGRP 020
#define XGRP 010
#define ROTH 04
#define WOTH 02
#define XOTH 01
#define STXT 01000
longt()
{
register char *cp;
register t;
pmode();
#ifndef AUSAM
printf("%3d/%1d", arbuf.uid&0377, arbuf.gid&0377);
#else AUSAM
printf( "%5l", arbuf.uid );
#endif AUSAM
printf("%6s", locv(arbuf.size));
cp = ctime(arbuf.date);
printf(" %-12.12s %-4.4s ", cp+4, cp+20);
}
int m1[]
{
1, ROWN, 'r', '-' };
int m2[]
{
1, WOWN, 'w', '-' };
int m3[]
{
2, SUID, 's', XOWN, 'x', '-' };
int m4[]
{
1, RGRP, 'r', '-' };
int m5[]
{
1, WGRP, 'w', '-' };
int m6[]
{
2, SGID, 's', XGRP, 'x', '-' };
int m7[]
{
1, ROTH, 'r', '-' };
int m8[]
{
1, WOTH, 'w', '-' };
int m9[]
{
2, STXT, 't', XOTH, 'x', '-' };
int *m[]
{
m1, m2, m3, m4, m5, m6, m7, m8, m9};
pmode()
{
register int **mp;
for (mp = &m[0]; mp < &m[9];)
select(*mp++);
}
select(pairp)
int *pairp;
{
register int n, *ap;
ap = pairp;
n = *ap++;
while (--n>=0 && (arbuf.mode&*ap++)==0)
ap++;
putchar(*ap);
}