4.4BSD/usr/src/old/ar11/ar11.c
static char *sccsid = "@(#)ar11.c 4.6 (Berkeley) 5/11/89";
/* ar11 - archiver for PDP-11 formatted archives */
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/stat.h>
#include <stdio.h>
#include "pathnames.h"
#define ARMAG ((short)0177545)
struct ar_hdr {
char ar_name[14];
short ar_sdate[2];
char ar_uid;
char ar_gid;
short ar_mode;
short ar_ssize[2];
};
long ar_date;
long ar_size;
#ifdef vax
#define fixshort(s) (s)
#define mklong(sp) (((sp)[0] << 16) + (sp)[1])
#define unmklong(sp,l) { sp[0] = l >> 16; sp[1] = l & 0177777; }
#define fixhdr(hdr) (hdr)
#endif
#if defined(mc68000) || defined(tahoe)
#define fixshort(s) ((short)(((s>>8)&0377)+((s&0377)<<8)))
#define mklong(sp) (((sp)[0] << 16) + (sp)[1])
#define unmklong(sp,l) { sp[0] = l >> 16; sp[1] = l & 0177777; }
#define fixhdr(hdr) swaphdr(hdr)
struct ar_hdr swaphdr();
#endif
struct stat stbuf;
struct ar_hdr arbuf;
#define SKIP 1
#define IODD 2
#define OODD 4
#define HEAD 8
char *man = { "mrxtdp" };
char *opt = { "uvnbai" };
int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0};
int sigdone();
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;
char buf[512];
char *trim();
char *mktemp();
char *ctime();
main(argc, argv)
char *argv[];
{
register i;
register char *cp;
for(i=0; signum[i]; i++)
if(signal(signum[i], SIG_IGN) != SIG_IGN)
signal(signum[i], sigdone);
if(argc < 3)
usage();
cp = argv[1];
for(cp = argv[1]; *cp; cp++)
switch(*cp) {
case 'c':
case 'v':
case 'u':
case 'n':
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:
fprintf(stderr, "ar11: bad option `%c'\n", *cp);
done(1);
}
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) {
fprintf(stderr, "ar11: one of [%s] must be specified\n", man);
done(1);
}
setcom(rcmd);
}
(*comfun)();
done(notfound());
}
setcom(fun)
int (*fun)();
{
if(comfun != 0) {
fprintf(stderr, "ar11: only one of [%s] allowed\n", man);
done(1);
}
comfun = fun;
}
rcmd()
{
register f;
init();
if(getaf() && flg['c'-'a']==0) {
fprintf(stderr, "ar11: %s does not exist\n", arnam);
done(1);
}
while(!getdir()) {
bamatch();
if(namc == 0 || match()) {
f = stats();
if(f < 0) {
if(namc)
fprintf(stderr, "ar11: cannot open %s\n", file);
goto cp;
}
if(flg['u'-'a'])
if(stbuf.st_mtime <= ar_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.ar_mode & 0777);
if(f < 0) {
fprintf(stderr, "ar11: %s cannot create\n", 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("\n<%s>\n\n", file);
fflush(stdout);
}
copyfil(af, 1, IODD);
continue;
}
copyfil(af, -1, IODD+SKIP);
}
}
mcmd()
{
static char name2[] = _PATH_TMP2;
init();
if(getaf())
noar();
tf2nam = mktemp(name2);
close(creat(tf2nam, 0600));
tf2 = open(tf2nam, 2);
if(tf2 < 0) {
fprintf(stderr, "ar11: cannot create third temp\n");
done(1);
}
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()
{
static char name0[] = _PATH_TMP0;
static short mbuf = fixshort(ARMAG);
tfnam = mktemp(name0);
close(creat(tfnam, 0600));
tf = open(tfnam, 2);
if(tf < 0) {
fprintf(stderr, "ar11: cannot create temp file\n");
done(1);
}
if (write(tf, (char *)&mbuf, sizeof(short)) != sizeof(short))
wrerr();
}
getaf()
{
short mbuf;
af = open(arnam, 0);
if(af < 0)
return(1);
if (read(af, (char *)&mbuf, sizeof(short)) != sizeof(short) ||
mbuf != fixshort(ARMAG)) {
fprintf(stderr, "ar11: %s not in PDP-11 archive format\n", arnam);
done(1);
}
return(0);
}
usage()
{
printf("usage: ar11 [%s][%s] archive files ...\n", opt, man);
done(1);
}
noar()
{
fprintf(stderr, "ar11: %s does not exist\n", arnam);
done(1);
}
sigdone()
{
done(100);
}
done(c)
{
if(tfnam)
unlink(tfnam);
if(tf1nam)
unlink(tf1nam);
if(tf2nam)
unlink(tf2nam);
exit(c);
}
notfound()
{
register i, n;
n = 0;
for(i=0; i<namc; i++)
if(namv[i]) {
fprintf(stderr, "ar11: %s not found\n", namv[i]);
n++;
}
return(n);
}
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) {
fprintf(stderr, "ar11: %s cannot open\n", file);
continue;
}
movefil(f);
}
install();
}
install()
{
register i;
for(i=0; signum[i]; i++)
signal(signum[i], (int (*)())1);
close(af);
af = creat(arnam, 0666);
if(af < 0) {
fprintf(stderr, "ar11: cannot create %s\n", arnam);
done(1);
}
lseek(tf, 0l, 0);
while((i = read(tf, buf, 512)) > 0)
if (write(af, buf, i) != i)
wrerr();
if(tf2nam) {
lseek(tf2, 0l, 0);
while((i = read(tf2, buf, 512)) > 0)
if (write(af, buf, i) != i)
wrerr();
}
if(tf1nam) {
lseek(tf1, 0l, 0);
while((i = read(tf1, buf, 512)) > 0)
if (write(af, buf, i) != i)
wrerr();
}
}
/*
* 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.ar_name[i] = *cp)
cp++;
ar_size = stbuf.st_size;
ar_date = stbuf.st_mtime;
unmklong(arbuf.ar_ssize, ar_size);
unmklong(arbuf.ar_sdate, ar_date);
arbuf.ar_uid = stbuf.st_uid;
arbuf.ar_gid = stbuf.st_gid;
arbuf.ar_mode = stbuf.st_mode;
copyfil(f, tf, OODD+HEAD);
close(f);
}
stats()
{
register f;
f = open(file, 0);
if(f < 0)
return(f);
if(fstat(f, &stbuf) < 0) {
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) {
struct ar_hdr tmpbuf;
tmpbuf = fixhdr(arbuf);
if (write(fo, (char *)&tmpbuf, sizeof arbuf) != sizeof arbuf)
wrerr();
}
pe = 0;
while(ar_size > 0) {
i = o = 512;
if(ar_size < i) {
i = o = ar_size;
if(i&1) {
if(flag & IODD)
i++;
if(flag & OODD)
o++;
}
}
if(read(fi, buf, i) != i)
pe++;
if((flag & SKIP) == 0)
if (write(fo, buf, o) != o)
wrerr();
ar_size -= 512;
}
if(pe)
phserr();
}
getdir()
{
register i;
i = read(af, (char *)&arbuf, sizeof arbuf);
if(i != sizeof arbuf) {
if(tf1nam) {
i = tf;
tf = tf1;
tf1 = i;
}
return(1);
}
arbuf = fixhdr(arbuf);
for(i=0; i<14; i++)
name[i] = arbuf.ar_name[i];
file = name;
ar_date = mklong(arbuf.ar_sdate);
ar_size = mklong(arbuf.ar_ssize);
return(0);
}
match()
{
register i;
for(i=0; i<namc; i++) {
if(namv[i] == 0)
continue;
if(strcmp(trim(namv[i]), file) == 0) {
file = namv[i];
namv[i] = 0;
return(1);
}
}
return(0);
}
bamatch()
{
static char name1[] = _PATH_TMP1;
register f;
switch(bastate) {
case 1:
if(strcmp(file, ponam) != 0)
return;
bastate = 2;
if(flg['a'-'a'])
return;
case 2:
bastate = 0;
tf1nam = mktemp(name1);
close(creat(tf1nam, 0600));
f = open(tf1nam, 2);
if(f < 0) {
fprintf(stderr, "ar11: cannot create second temp\n");
return;
}
tf1 = tf;
tf = f;
}
}
phserr()
{
fprintf(stderr, "ar11: 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);
}
char *
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;
pmode();
printf("%3d/%1d", arbuf.ar_uid, arbuf.ar_gid);
printf("%7D", ar_size);
cp = ctime(&ar_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.ar_mode&*ap++)==0)
ap++;
putchar(*ap);
}
wrerr()
{
perror("ar write error");
done(1);
}
#if defined(mc68000) || defined(tahoe)
struct ar_hdr
swaphdr(hdr)
struct ar_hdr hdr;
{
hdr.ar_sdate[0] = fixshort(hdr.ar_sdate[0]);
hdr.ar_sdate[1] = fixshort(hdr.ar_sdate[1]);
hdr.ar_ssize[0] = fixshort(hdr.ar_ssize[0]);
hdr.ar_ssize[1] = fixshort(hdr.ar_ssize[1]);
hdr.ar_mode = fixshort(hdr.ar_mode);
return (hdr);
}
#endif