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1.1 root 1: /*
2: * Copyright (c) 1980 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: */
6:
7: #ifndef lint
8: static char sccsid[] = "@(#)ar.c 5.3 (Berkeley) 10/22/87";
9: #endif not lint
10:
11: #ifndef lint
12: char copyright[] =
13: "@(#) Copyright (c) 1980 Regents of the University of California.\n\
14: All rights reserved.\n";
15: #endif not lint
16:
17: /*
18: * ar - portable (ascii) format version
19: */
20: #include <sys/param.h>
21: #include <sys/stat.h>
22: #include <sys/time.h>
23:
24: #include <stdio.h>
25: #include <ar.h>
26:
27: struct stat stbuf;
28: struct ar_hdr arbuf;
29: struct lar_hdr {
30: char lar_name[16];
31: long lar_date;
32: u_short lar_uid;
33: u_short lar_gid;
34: u_short lar_mode;
35: long lar_size;
36: } larbuf;
37:
38: #define SKIP 1
39: #define IODD 2
40: #define OODD 4
41: #define HEAD 8
42:
43: char *man = { "mrxtdpq" };
44: char *opt = { "uvnbailo" };
45:
46: int signum[] = {SIGHUP, SIGINT, SIGQUIT, 0};
47: int sigdone();
48: long lseek();
49: int rcmd();
50: int dcmd();
51: int xcmd();
52: int tcmd();
53: int pcmd();
54: int mcmd();
55: int qcmd();
56: int (*comfun)();
57: char flg[26];
58: char **namv;
59: int namc;
60: char *arnam;
61: char *ponam;
62: char *tmpnam = { "/tmp/vXXXXX" };
63: char *tmp1nam = { "/tmp/v1XXXXX" };
64: char *tmp2nam = { "/tmp/v2XXXXX" };
65: char *tfnam;
66: char *tf1nam;
67: char *tf2nam;
68: char *file;
69: char name[16];
70: int af;
71: int tf;
72: int tf1;
73: int tf2;
74: int qf;
75: int bastate;
76: char buf[MAXBSIZE];
77: int truncate; /* ok to truncate argument filenames */
78:
79: char *trim();
80: char *mktemp();
81: char *ctime();
82:
83: main(argc, argv)
84: char *argv[];
85: {
86: register i;
87: register char *cp;
88:
89: for(i=0; signum[i]; i++)
90: if(signal(signum[i], SIG_IGN) != SIG_IGN)
91: signal(signum[i], sigdone);
92: if(argc < 3)
93: usage();
94: cp = argv[1];
95: for(cp = argv[1]; *cp; cp++)
96: switch(*cp) {
97: case 'o':
98: case 'l':
99: case 'v':
100: case 'u':
101: case 'n':
102: case 'a':
103: case 'b':
104: case 'c':
105: case 'i':
106: flg[*cp - 'a']++;
107: continue;
108:
109: case 'r':
110: setcom(rcmd);
111: continue;
112:
113: case 'd':
114: setcom(dcmd);
115: continue;
116:
117: case 'x':
118: setcom(xcmd);
119: continue;
120:
121: case 't':
122: setcom(tcmd);
123: continue;
124:
125: case 'p':
126: setcom(pcmd);
127: continue;
128:
129: case 'm':
130: setcom(mcmd);
131: continue;
132:
133: case 'q':
134: setcom(qcmd);
135: continue;
136:
137: default:
138: fprintf(stderr, "ar: bad option `%c'\n", *cp);
139: done(1);
140: }
141: if(flg['l'-'a']) {
142: tmpnam = "vXXXXX";
143: tmp1nam = "v1XXXXX";
144: tmp2nam = "v2XXXXX";
145: }
146: if(flg['i'-'a'])
147: flg['b'-'a']++;
148: if(flg['a'-'a'] || flg['b'-'a']) {
149: bastate = 1;
150: ponam = trim(argv[2]);
151: argv++;
152: argc--;
153: if(argc < 3)
154: usage();
155: }
156: arnam = argv[2];
157: namv = argv+3;
158: namc = argc-3;
159: if(comfun == 0) {
160: if(flg['u'-'a'] == 0) {
161: fprintf(stderr, "ar: one of [%s] must be specified\n", man);
162: done(1);
163: }
164: setcom(rcmd);
165: }
166: (*comfun)();
167: done(notfound());
168: }
169:
170: setcom(fun)
171: int (*fun)();
172: {
173:
174: if(comfun != 0) {
175: fprintf(stderr, "ar: only one of [%s] allowed\n", man);
176: done(1);
177: }
178: comfun = fun;
179: }
180:
181: rcmd()
182: {
183: register f;
184:
185: init();
186: getaf();
187: while(!getdir()) {
188: bamatch();
189: if(namc == 0 || match()) {
190: f = stats();
191: if(f < 0) {
192: if(namc)
193: fprintf(stderr, "ar: cannot open %s\n", file);
194: goto cp;
195: }
196: if(flg['u'-'a'])
197: if(stbuf.st_mtime <= larbuf.lar_date) {
198: close(f);
199: goto cp;
200: }
201: mesg('r');
202: copyfil(af, -1, IODD+SKIP);
203: movefil(f);
204: continue;
205: }
206: cp:
207: mesg('c');
208: copyfil(af, tf, IODD+OODD+HEAD);
209: }
210: cleanup();
211: }
212:
213: dcmd()
214: {
215:
216: init();
217: if(getaf())
218: noar();
219: while(!getdir()) {
220: if(match()) {
221: mesg('d');
222: copyfil(af, -1, IODD+SKIP);
223: continue;
224: }
225: mesg('c');
226: copyfil(af, tf, IODD+OODD+HEAD);
227: }
228: install();
229: }
230:
231: xcmd()
232: {
233: register f;
234: struct timeval tv[2];
235:
236: if(getaf())
237: noar();
238: while(!getdir()) {
239: if(namc == 0 || match()) {
240: f = creat(file, larbuf.lar_mode & 0777);
241: if(f < 0) {
242: fprintf(stderr, "ar: %s cannot create\n", file);
243: goto sk;
244: }
245: mesg('x');
246: copyfil(af, f, IODD);
247: close(f);
248: if (flg['o'-'a']) {
249: tv[0].tv_sec = tv[1].tv_sec = larbuf.lar_date;
250: tv[0].tv_usec = tv[1].tv_usec = 0;
251: utimes(file, tv);
252: }
253: continue;
254: }
255: sk:
256: mesg('c');
257: copyfil(af, -1, IODD+SKIP);
258: if (namc > 0 && !morefil())
259: done(0);
260: }
261: }
262:
263: pcmd()
264: {
265:
266: if(getaf())
267: noar();
268: while(!getdir()) {
269: if(namc == 0 || match()) {
270: if(flg['v'-'a']) {
271: printf("\n<%s>\n\n", file);
272: fflush(stdout);
273: }
274: copyfil(af, 1, IODD);
275: continue;
276: }
277: copyfil(af, -1, IODD+SKIP);
278: }
279: }
280:
281: mcmd()
282: {
283:
284: init();
285: if(getaf())
286: noar();
287: tf2nam = mktemp(tmp2nam);
288: close(creat(tf2nam, 0600));
289: tf2 = open(tf2nam, 2);
290: if(tf2 < 0) {
291: fprintf(stderr, "ar: cannot create third temp\n");
292: done(1);
293: }
294: while(!getdir()) {
295: bamatch();
296: if(match()) {
297: mesg('m');
298: copyfil(af, tf2, IODD+OODD+HEAD);
299: continue;
300: }
301: mesg('c');
302: copyfil(af, tf, IODD+OODD+HEAD);
303: }
304: install();
305: }
306:
307: tcmd()
308: {
309:
310: if(getaf())
311: noar();
312: while(!getdir()) {
313: if(namc == 0 || match()) {
314: if(flg['v'-'a'])
315: longt();
316: printf("%s\n", trim(file));
317: }
318: copyfil(af, -1, IODD+SKIP);
319: }
320: }
321:
322: qcmd()
323: {
324: register i, f;
325:
326: if (flg['a'-'a'] || flg['b'-'a']) {
327: fprintf(stderr, "ar: abi not allowed with q\n");
328: done(1);
329: }
330: truncate++;
331: getqf();
332: for(i=0; signum[i]; i++)
333: signal(signum[i], SIG_IGN);
334: lseek(qf, 0l, 2);
335: for(i=0; i<namc; i++) {
336: file = namv[i];
337: if(file == 0)
338: continue;
339: namv[i] = 0;
340: mesg('q');
341: f = stats();
342: if(f < 0) {
343: fprintf(stderr, "ar: %s cannot open\n", file);
344: continue;
345: }
346: tf = qf;
347: movefil(f);
348: qf = tf;
349: }
350: }
351:
352: init()
353: {
354:
355: tfnam = mktemp(tmpnam);
356: close(creat(tfnam, 0600));
357: tf = open(tfnam, 2);
358: if(tf < 0) {
359: fprintf(stderr, "ar: cannot create temp file\n");
360: done(1);
361: }
362: if (write(tf, ARMAG, SARMAG) != SARMAG)
363: wrerr();
364: }
365:
366: getaf()
367: {
368: char mbuf[SARMAG];
369:
370: af = open(arnam, 0);
371: if(af < 0)
372: return(1);
373: if (read(af, mbuf, SARMAG) != SARMAG || strncmp(mbuf, ARMAG, SARMAG)) {
374: fprintf(stderr, "ar: %s not in archive format\n", arnam);
375: done(1);
376: }
377: return(0);
378: }
379:
380: getqf()
381: {
382: char mbuf[SARMAG];
383:
384: if ((qf = open(arnam, 2)) < 0) {
385: if(!flg['c'-'a'])
386: fprintf(stderr, "ar: creating %s\n", arnam);
387: if ((qf = creat(arnam, 0666)) < 0) {
388: fprintf(stderr, "ar: cannot create %s\n", arnam);
389: done(1);
390: }
391: if (write(qf, ARMAG, SARMAG) != SARMAG)
392: wrerr();
393: } else if (read(qf, mbuf, SARMAG) != SARMAG
394: || strncmp(mbuf, ARMAG, SARMAG)) {
395: fprintf(stderr, "ar: %s not in archive format\n", arnam);
396: done(1);
397: }
398: }
399:
400: usage()
401: {
402: printf("usage: ar [%s][%s] archive files ...\n", man, opt);
403: done(1);
404: }
405:
406: noar()
407: {
408:
409: fprintf(stderr, "ar: %s does not exist\n", arnam);
410: done(1);
411: }
412:
413: sigdone()
414: {
415: done(100);
416: }
417:
418: done(c)
419: {
420:
421: if(tfnam)
422: unlink(tfnam);
423: if(tf1nam)
424: unlink(tf1nam);
425: if(tf2nam)
426: unlink(tf2nam);
427: exit(c);
428: }
429:
430: notfound()
431: {
432: register i, n;
433:
434: n = 0;
435: for(i=0; i<namc; i++)
436: if(namv[i]) {
437: fprintf(stderr, "ar: %s not found\n", namv[i]);
438: n++;
439: }
440: return(n);
441: }
442:
443: morefil()
444: {
445: register i, n;
446:
447: n = 0;
448: for(i=0; i<namc; i++)
449: if(namv[i])
450: n++;
451: return(n);
452: }
453:
454: cleanup()
455: {
456: register i, f;
457:
458: truncate++;
459: for(i=0; i<namc; i++) {
460: file = namv[i];
461: if(file == 0)
462: continue;
463: namv[i] = 0;
464: mesg('a');
465: f = stats();
466: if(f < 0) {
467: fprintf(stderr, "ar: %s cannot open\n", file);
468: continue;
469: }
470: movefil(f);
471: }
472: install();
473: }
474:
475: install()
476: {
477: register i;
478:
479: for(i=0; signum[i]; i++)
480: signal(signum[i], SIG_IGN);
481: if(af < 0)
482: if(!flg['c'-'a'])
483: fprintf(stderr, "ar: creating %s\n", arnam);
484: close(af);
485: af = creat(arnam, 0666);
486: if(af < 0) {
487: fprintf(stderr, "ar: cannot create %s\n", arnam);
488: done(1);
489: }
490: if(tfnam) {
491: lseek(tf, 0l, 0);
492: while((i = read(tf, buf, MAXBSIZE)) > 0)
493: if (write(af, buf, i) != i)
494: wrerr();
495: }
496: if(tf2nam) {
497: lseek(tf2, 0l, 0);
498: while((i = read(tf2, buf, MAXBSIZE)) > 0)
499: if (write(af, buf, i) != i)
500: wrerr();
501: }
502: if(tf1nam) {
503: lseek(tf1, 0l, 0);
504: while((i = read(tf1, buf, MAXBSIZE)) > 0)
505: if (write(af, buf, i) != i)
506: wrerr();
507: }
508: }
509:
510: /*
511: * insert the file 'file'
512: * into the temporary file
513: */
514: movefil(f)
515: {
516: char buf[sizeof(arbuf)+1];
517:
518: (void)sprintf(buf, "%-16s%-12ld%-6u%-6u%-8o%-10ld%-2s",
519: trim(file),
520: stbuf.st_mtime,
521: (u_short)stbuf.st_uid,
522: (u_short)stbuf.st_gid,
523: stbuf.st_mode,
524: stbuf.st_size,
525: ARFMAG);
526: strncpy((char *)&arbuf, buf, sizeof(arbuf));
527: larbuf.lar_size = stbuf.st_size;
528: copyfil(f, tf, OODD+HEAD);
529: close(f);
530: }
531:
532: stats()
533: {
534: register f;
535:
536: f = open(file, 0);
537: if(f < 0)
538: return(f);
539: if(fstat(f, &stbuf) < 0) {
540: close(f);
541: return(-1);
542: }
543: return(f);
544: }
545:
546: /*
547: * copy next file
548: * size given in arbuf
549: */
550: copyfil(fi, fo, flag)
551: {
552: register i, o;
553: int pe;
554:
555: if(flag & HEAD) {
556: for (i=sizeof(arbuf.ar_name)-1; i>=0; i--) {
557: if (arbuf.ar_name[i]==' ')
558: continue;
559: else if (arbuf.ar_name[i]=='\0')
560: arbuf.ar_name[i] = ' ';
561: else
562: break;
563: }
564: if (write(fo, (char *)&arbuf, sizeof arbuf) != sizeof arbuf)
565: wrerr();
566: }
567: pe = 0;
568: while(larbuf.lar_size > 0) {
569: i = o = MAXBSIZE;
570: if(larbuf.lar_size < i) {
571: i = o = larbuf.lar_size;
572: if(i&1) {
573: buf[i] = '\n';
574: if(flag & IODD)
575: i++;
576: if(flag & OODD)
577: o++;
578: }
579: }
580: if(read(fi, buf, i) != i)
581: pe++;
582: if((flag & SKIP) == 0)
583: if (write(fo, buf, o) != o)
584: wrerr();
585: larbuf.lar_size -= MAXBSIZE;
586: }
587: if(pe)
588: phserr();
589: }
590:
591: getdir()
592: {
593: register char *cp;
594: register i;
595:
596: i = read(af, (char *)&arbuf, sizeof arbuf);
597: if(i != sizeof arbuf) {
598: if(tf1nam) {
599: i = tf;
600: tf = tf1;
601: tf1 = i;
602: }
603: return(1);
604: }
605: if (strncmp(arbuf.ar_fmag, ARFMAG, sizeof(arbuf.ar_fmag))) {
606: fprintf(stderr, "ar: malformed archive (at %ld)\n", lseek(af, 0L, 1));
607: done(1);
608: }
609: cp = arbuf.ar_name + sizeof(arbuf.ar_name);
610: while (*--cp==' ')
611: ;
612: *++cp = '\0';
613: strncpy(name, arbuf.ar_name, sizeof(arbuf.ar_name));
614: file = name;
615: strncpy(larbuf.lar_name, name, sizeof(larbuf.lar_name));
616: sscanf(arbuf.ar_date, "%ld", &larbuf.lar_date);
617: sscanf(arbuf.ar_uid, "%hd", &larbuf.lar_uid);
618: sscanf(arbuf.ar_gid, "%hd", &larbuf.lar_gid);
619: sscanf(arbuf.ar_mode, "%ho", &larbuf.lar_mode);
620: sscanf(arbuf.ar_size, "%ld", &larbuf.lar_size);
621: return(0);
622: }
623:
624: match()
625: {
626: register i;
627:
628: for(i=0; i<namc; i++) {
629: if(namv[i] == 0)
630: continue;
631: if(strcmp(trim(namv[i]), file) == 0) {
632: file = namv[i];
633: namv[i] = 0;
634: return(1);
635: }
636: }
637: return(0);
638: }
639:
640: bamatch()
641: {
642: register f;
643:
644: switch(bastate) {
645:
646: case 1:
647: if(strcmp(file, ponam) != 0)
648: return;
649: bastate = 2;
650: if(flg['a'-'a'])
651: return;
652:
653: case 2:
654: bastate = 0;
655: tf1nam = mktemp(tmp1nam);
656: close(creat(tf1nam, 0600));
657: f = open(tf1nam, 2);
658: if(f < 0) {
659: fprintf(stderr, "ar: cannot create second temp\n");
660: return;
661: }
662: tf1 = tf;
663: tf = f;
664: }
665: }
666:
667: phserr()
668: {
669:
670: fprintf(stderr, "ar: phase error on %s\n", file);
671: }
672:
673: mesg(c)
674: {
675:
676: if(flg['v'-'a'])
677: if(c != 'c' || flg['v'-'a'] > 1)
678: printf("%c - %s\n", c, file);
679: }
680:
681: char *
682: trim(s)
683: char *s;
684: {
685: register char *p1, *p2;
686:
687: /* Strip trailing slashes */
688: for(p1 = s; *p1; p1++)
689: ;
690: while(p1 > s) {
691: if(*--p1 != '/')
692: break;
693: *p1 = 0;
694: }
695:
696: /* Find last component of path; do not zap the path */
697: p2 = s;
698: for(p1 = s; *p1; p1++)
699: if(*p1 == '/')
700: p2 = p1+1;
701:
702: /*
703: * Truncate name if too long, only if we are doing an 'add'
704: * type operation. We only allow 15 cause rest of ar
705: * isn't smart enough to deal with non-null terminated
706: * names. Need an exit status convention...
707: * Need yet another new archive format...
708: */
709: if (truncate && strlen(p2) > sizeof(arbuf.ar_name) - 1) {
710: fprintf(stderr, "ar: filename %s truncated to ", p2);
711: *(p2 + sizeof(arbuf.ar_name) - 1) = '\0';
712: fprintf(stderr, "%s\n", p2);
713: }
714: return(p2);
715: }
716:
717: #define IFMT 060000
718: #define ISARG 01000
719: #define LARGE 010000
720: #define SUID 04000
721: #define SGID 02000
722: #define ROWN 0400
723: #define WOWN 0200
724: #define XOWN 0100
725: #define RGRP 040
726: #define WGRP 020
727: #define XGRP 010
728: #define ROTH 04
729: #define WOTH 02
730: #define XOTH 01
731: #define STXT 01000
732:
733: longt()
734: {
735: register char *cp;
736:
737: pmode();
738: printf("%3d/%1d", larbuf.lar_uid, larbuf.lar_gid);
739: printf("%7ld", larbuf.lar_size);
740: cp = ctime(&larbuf.lar_date);
741: printf(" %-12.12s %-4.4s ", cp+4, cp+20);
742: }
743:
744: int m1[] = { 1, ROWN, 'r', '-' };
745: int m2[] = { 1, WOWN, 'w', '-' };
746: int m3[] = { 2, SUID, 's', XOWN, 'x', '-' };
747: int m4[] = { 1, RGRP, 'r', '-' };
748: int m5[] = { 1, WGRP, 'w', '-' };
749: int m6[] = { 2, SGID, 's', XGRP, 'x', '-' };
750: int m7[] = { 1, ROTH, 'r', '-' };
751: int m8[] = { 1, WOTH, 'w', '-' };
752: int m9[] = { 2, STXT, 't', XOTH, 'x', '-' };
753:
754: int *m[] = { m1, m2, m3, m4, m5, m6, m7, m8, m9};
755:
756: pmode()
757: {
758: register int **mp;
759:
760: for (mp = &m[0]; mp < &m[9];)
761: select(*mp++);
762: }
763:
764: select(pairp)
765: int *pairp;
766: {
767: register int n, *ap;
768:
769: ap = pairp;
770: n = *ap++;
771: while (--n>=0 && (larbuf.lar_mode&*ap++)==0)
772: ap++;
773: putchar(*ap);
774: }
775:
776: wrerr()
777: {
778: perror("ar write error");
779: done(1);
780: }
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