790 lines
15 KiB
C
790 lines
15 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* ar - archiver Author: Michiel Huisjes */
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/* Made into arch/aal by Ceriel Jacobs
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*/
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static char RcsId[] = "$Id$";
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/*
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* Usage: [arch|aal] [qdprtx][vlcu] archive [file] ...
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* v: verbose
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* x: extract
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* q: append
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* r: replace (append when not in archive)
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* d: delete
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* t: print contents of archive
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* p: print named files
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* l: temporaries in current directory instead of /tmp
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* c: don't give "create" message
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* u: replace only if dated later than member in archive
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#ifdef DISTRIBUTION
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* D: make distribution: use distr_time, uid=2, gid=2, mode=0644
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#endif
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <arch.h>
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#include <ranlib.h>
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#include <unistd.h>
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#ifdef AAL
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#include <out.h>
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#define MAGIC_NUMBER AALMAG
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long offset;
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struct ranlib *tab;
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unsigned int tnum = 0;
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char *tstrtab;
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unsigned int tssiz = 0;
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unsigned int tabsz, strtabsz;
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#else
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#define MAGIC_NUMBER ARMAG
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#endif
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#define odd(nr) (nr & 01)
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#define even(nr) (odd(nr) ? nr + 1 : nr)
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typedef char BOOL;
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#define FALSE 0
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#define TRUE 1
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#define READ 0
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#define APPEND 2
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#define CREATE 1
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#define MEMBER struct ar_hdr
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#define NIL_PTR ((char *) 0)
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#define NIL_MEM ((MEMBER *) 0)
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#define NIL_LONG ((long *) 0)
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#define IO_SIZE (10 * 1024)
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#define equal(str1, str2) (!strncmp((str1), (str2), 14))
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#ifndef S_ISDIR
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#define S_ISDIR(m) (m & S_IFDIR) /* is a directory */
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#endif
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/* Use Posix names if old-fashioned names are not defined. */
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#ifndef S_IREAD
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#define S_IREAD S_IRUSR
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#endif
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#ifndef S_IWRITE
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#define S_IWRITE S_IWUSR
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#endif
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#ifndef S_IEXEC
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#define S_IEXEC S_IXUSR
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#endif
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BOOL verbose;
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BOOL app_fl;
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BOOL ex_fl;
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BOOL show_fl;
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BOOL pr_fl;
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BOOL u_fl;
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BOOL rep_fl;
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BOOL del_fl;
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BOOL nocr_fl;
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BOOL local_fl;
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#ifdef DISTRIBUTION
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BOOL distr_fl;
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long distr_time;
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#endif
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int ar_fd;
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char io_buffer[IO_SIZE];
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char *progname;
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char temp_buf[32];
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char *temp_arch = &temp_buf[0];
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extern char *mktemp();
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extern char *ctime();
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void do_object();
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void write_symdef();
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void add();
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usage()
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{
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error(TRUE, "usage: %s [qdprtxl][vlc] archive [file] ...\n",
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progname
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);
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}
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/*VARARGS2*/
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error(quit, str1, str2, str3, str4)
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BOOL quit;
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char *str1, *str2, *str3, *str4;
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{
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char errbuf[256];
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sprint(errbuf, str1, str2, str3, str4);
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write(2, errbuf, strlen(errbuf));
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if (quit) {
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unlink(temp_arch);
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_exit(1);
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}
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}
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char *basename(path)
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char *path;
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{
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register char *ptr = path;
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register char *last = NIL_PTR;
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while (*ptr != '\0') {
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if (*ptr == '/')
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last = ptr;
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ptr++;
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}
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if (last == NIL_PTR)
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return path;
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if (*(last + 1) == '\0') {
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*last = '\0';
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return basename(path);
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}
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return last + 1;
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}
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extern unsigned int rd_unsigned2();
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open_archive(name, mode)
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register char *name;
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register int mode;
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{
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unsigned short magic = 0;
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int fd;
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if (mode == CREATE) {
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if ((fd = creat(name, 0666)) < 0)
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error(TRUE, "cannot creat %s\n", name);
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magic = MAGIC_NUMBER;
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wr_int2(fd, magic);
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return fd;
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}
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if ((fd = open(name, mode)) < 0) {
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if (mode == APPEND) {
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close(open_archive(name, CREATE));
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if (!nocr_fl) error(FALSE, "%s: creating %s\n", progname, name);
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return open_archive(name, APPEND);
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}
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error(TRUE, "cannot open %s\n", name);
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}
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lseek(fd, 0L, 0);
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magic = rd_unsigned2(fd);
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if (magic != AALMAG && magic != ARMAG)
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error(TRUE, "%s is not in ar format\n", name);
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return fd;
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}
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void
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catch()
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{
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unlink(temp_arch);
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_exit (2);
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}
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main(argc, argv)
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int argc;
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char *argv[];
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{
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register char *ptr;
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int needs_arg = 0;
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progname = argv[0];
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if (argc < 3)
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usage();
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for (ptr = argv[1]; *ptr; ptr++) {
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switch (*ptr) {
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case 't' :
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show_fl = TRUE;
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break;
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case 'v' :
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verbose = TRUE;
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break;
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case 'x' :
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ex_fl = TRUE;
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break;
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case 'q' :
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needs_arg = 1;
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app_fl = TRUE;
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break;
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case 'c' :
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nocr_fl = TRUE;
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break;
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case 'u':
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u_fl = TRUE;
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break;
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case 'p' :
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needs_arg = 1;
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pr_fl = TRUE;
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break;
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case 'd' :
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needs_arg = 1;
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del_fl = TRUE;
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break;
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case 'r' :
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needs_arg = 1;
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rep_fl = TRUE;
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break;
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case 'l' :
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local_fl = TRUE;
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break;
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#ifdef DISTRIBUTION
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case 'D' :
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distr_fl = TRUE;
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break;
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#endif
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default :
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usage();
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}
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}
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if (needs_arg && argc <= 3)
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usage();
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#ifdef DISTRIBUTION
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if (distr_fl) {
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static struct stat statbuf;
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stat(progname, &statbuf);
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distr_time = statbuf.st_mtime;
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}
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#endif
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if (local_fl) strcpy(temp_arch, "ar.XXXXXX");
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else strcpy(temp_arch, "/tmp/ar.XXXXXX");
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if (app_fl + ex_fl + del_fl + rep_fl + show_fl + pr_fl != 1)
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usage();
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if (u_fl && ! rep_fl)
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usage();
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if (rep_fl || del_fl
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#ifdef AAL
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|| app_fl
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#endif
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) {
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mktemp(temp_arch);
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}
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#ifdef AAL
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tab = (struct ranlib *) malloc(512 * sizeof(struct ranlib));
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tstrtab = malloc(4096);
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if (!tab || !tstrtab) error(TRUE,"Out of core\n");
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tabsz = 512;
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strtabsz = 4096;
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#endif
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signal(SIGINT, catch);
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get(argc, argv);
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return 0;
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}
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MEMBER *
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get_member()
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{
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static MEMBER member;
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again:
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if (rd_arhdr(ar_fd, &member) == 0)
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return NIL_MEM;
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if (member.ar_size < 0) {
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error(TRUE, "archive has member with negative size\n");
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}
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if (equal(SYMDEF, member.ar_name)) {
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lseek(ar_fd, member.ar_size, 1);
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goto again;
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}
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return &member;
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}
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char *get_mode();
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get(argc, argv)
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int argc;
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register char *argv[];
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{
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register MEMBER *member;
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int i = 0;
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int temp_fd, read_chars;
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ar_fd = open_archive(argv[2], (show_fl || pr_fl || ex_fl) ? READ : APPEND);
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if (rep_fl || del_fl
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#ifdef AAL
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|| app_fl
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#endif
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)
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temp_fd = open_archive(temp_arch, CREATE);
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while ((member = get_member()) != NIL_MEM) {
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if (argc > 3) {
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for (i = 3; i < argc; i++) {
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if (equal(basename(argv[i]), member->ar_name))
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break;
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}
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if (i == argc || app_fl) {
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if (rep_fl || del_fl
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#ifdef AAL
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|| app_fl
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#endif
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) {
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#ifdef AAL
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if (i != argc) {
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print("%s: already in archive\n", argv[i]);
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argv[i] = "";
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}
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#endif
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wr_arhdr(temp_fd, member);
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copy_member(member, ar_fd, temp_fd, 0);
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}
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else {
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#ifndef AAL
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if (app_fl && i != argc) {
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print("%s: already in archive\n", argv[i]);
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argv[i] = "";
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}
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#endif
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lseek(ar_fd, even(member->ar_size),1);
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}
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continue;
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}
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}
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if (ex_fl || pr_fl)
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extract(member);
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else {
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if (rep_fl)
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add(argv[i], temp_fd, "r - %s\n");
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else if (show_fl) {
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char buf[sizeof(member->ar_name) + 2];
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register char *p = buf, *q = member->ar_name;
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while (q <= &member->ar_name[sizeof(member->ar_name)-1] && *q) {
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*p++ = *q++;
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}
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*p++ = '\n';
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*p = '\0';
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if (verbose) {
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char *mode = get_mode(member->ar_mode);
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char *date = ctime(&(member->ar_date));
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*(date + 16) = '\0';
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*(date + 24) = '\0';
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print("%s%3u/%u%7ld %s %s %s",
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mode,
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(unsigned) (member->ar_uid & 0377),
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(unsigned) (member->ar_gid & 0377),
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member->ar_size,
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date+4,
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date+20,
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buf);
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}
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else print(buf);
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}
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else if (del_fl)
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show("d - %s\n", member->ar_name);
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lseek(ar_fd, even(member->ar_size), 1);
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}
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argv[i] = "";
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}
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if (argc > 3) {
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for (i = 3; i < argc; i++)
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if (argv[i][0] != '\0') {
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#ifndef AAL
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if (app_fl)
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add(argv[i], ar_fd, "a - %s\n");
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else
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#endif
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if (rep_fl
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#ifdef AAL
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|| app_fl
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#endif
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)
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add(argv[i], temp_fd, "a - %s\n");
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else {
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print("%s: not found\n", argv[i]);
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}
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}
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}
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if (rep_fl || del_fl
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#ifdef AAL
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|| app_fl
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#endif
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) {
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signal(SIGINT, SIG_IGN);
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close(ar_fd);
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close(temp_fd);
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ar_fd = open_archive(argv[2], CREATE);
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temp_fd = open_archive(temp_arch, APPEND);
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#ifdef AAL
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write_symdef();
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#endif
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while ((read_chars = read(temp_fd, io_buffer, IO_SIZE)) > 0)
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mwrite(ar_fd, io_buffer, read_chars);
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close(temp_fd);
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unlink(temp_arch);
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}
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close(ar_fd);
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}
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void
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add(name, fd, mess)
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char *name;
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int fd;
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char *mess;
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{
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static MEMBER member;
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register int read_chars;
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struct stat status;
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int src_fd;
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if (stat(name, &status) < 0) {
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error(FALSE, "cannot find %s\n", name);
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return;
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}
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else if (S_ISDIR(status.st_mode)) {
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error(FALSE, "%s is a directory (ignored)\n", name);
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return;
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}
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else if (u_fl && status.st_mtime <= member.ar_date) {
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wr_arhdr(fd, member);
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copy_member(member, ar_fd, fd, 0);
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return;
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}
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else if ((src_fd = open(name, 0)) < 0) {
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error(FALSE, "cannot open %s\n", name);
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return;
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}
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strncpy (member.ar_name, basename (name), sizeof(member.ar_name));
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member.ar_uid = status.st_uid;
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member.ar_gid = status.st_gid;
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member.ar_mode = status.st_mode;
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member.ar_date = status.st_mtime;
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member.ar_size = status.st_size;
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#ifdef DISTRIBUTION
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if (distr_fl) {
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member.ar_uid = 2;
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member.ar_gid = 2;
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member.ar_mode = 0644;
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member.ar_date = distr_time;
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}
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#endif
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wr_arhdr(fd, &member);
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#ifdef AAL
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do_object(src_fd, member.ar_size);
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lseek(src_fd, 0L, 0);
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offset += AR_TOTAL + even(member.ar_size);
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#endif
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while (status.st_size > 0) {
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int x = IO_SIZE;
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read_chars = x;
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if (status.st_size < x) {
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x = status.st_size;
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read_chars = x;
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status.st_size = 0;
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x = even(x);
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}
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else status.st_size -= x;
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if (read(src_fd, io_buffer, read_chars) != read_chars) {
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error(FALSE,"%s seems to shrink\n", name);
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break;
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}
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mwrite(fd, io_buffer, x);
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}
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if (verbose)
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show(mess, member.ar_name);
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close(src_fd);
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}
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extract(member)
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register MEMBER *member;
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{
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int fd = 1;
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char buf[sizeof(member->ar_name) + 1];
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strncpy(buf, member->ar_name, sizeof(member->ar_name));
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buf[sizeof(member->ar_name)] = 0;
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if (pr_fl == FALSE && (fd = creat(buf, 0666)) < 0) {
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error(FALSE, "cannot create %s\n", buf);
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fd = -1;
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}
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if (verbose) {
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if (pr_fl == FALSE) show("x - %s\n", buf);
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else show("\n<%s>\n\n", buf);
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}
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copy_member(member, ar_fd, fd, 1);
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if (fd >= 0 && fd != 1)
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close(fd);
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if (pr_fl == FALSE) chmod(buf, member->ar_mode);
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}
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copy_member(member, from, to, extracting)
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register MEMBER *member;
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int from, to;
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{
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register int rest;
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long mem_size = member->ar_size;
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BOOL is_odd = odd(mem_size) ? TRUE : FALSE;
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#ifdef AAL
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if (! extracting) {
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long pos = lseek(from, 0L, 1);
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do_object(from, mem_size);
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offset += AR_TOTAL + even(mem_size);
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lseek(from, pos, 0);
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}
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#endif
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do {
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rest = mem_size > (long) IO_SIZE ? IO_SIZE : (int) mem_size;
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if (read(from, io_buffer, rest) != rest) {
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char buf[sizeof(member->ar_name) + 1];
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strncpy(buf, member->ar_name, sizeof(member->ar_name));
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buf[sizeof(member->ar_name)] = 0;
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error(TRUE, "read error on %s\n", buf);
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}
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if (to >= 0) mwrite(to, io_buffer, rest);
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mem_size -= (long) rest;
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} while (mem_size > 0L);
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if (is_odd) {
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lseek(from, 1L, 1);
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if (to >= 0 && ! extracting)
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lseek(to, 1L, 1);
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}
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}
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char *
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get_mode(mode)
|
|
register int mode;
|
|
{
|
|
static char mode_buf[11];
|
|
register int tmp = mode;
|
|
int i;
|
|
|
|
mode_buf[9] = ' ';
|
|
for (i = 0; i < 3; i++) {
|
|
mode_buf[i * 3] = (tmp & S_IREAD) ? 'r' : '-';
|
|
mode_buf[i * 3 + 1] = (tmp & S_IWRITE) ? 'w' : '-';
|
|
mode_buf[i * 3 + 2] = (tmp & S_IEXEC) ? 'x' : '-';
|
|
tmp <<= 3;
|
|
}
|
|
if (mode & S_ISUID)
|
|
mode_buf[2] = 's';
|
|
if (mode & S_ISGID)
|
|
mode_buf[5] = 's';
|
|
return mode_buf;
|
|
}
|
|
|
|
wr_fatal()
|
|
{
|
|
error(TRUE, "write error\n");
|
|
}
|
|
|
|
rd_fatal()
|
|
{
|
|
error(TRUE, "read error\n");
|
|
}
|
|
|
|
mwrite(fd, address, bytes)
|
|
int fd;
|
|
register char *address;
|
|
register int bytes;
|
|
{
|
|
if (write(fd, address, bytes) != bytes)
|
|
error(TRUE, "write error\n");
|
|
}
|
|
|
|
show(s, name)
|
|
char *s, *name;
|
|
{
|
|
MEMBER x;
|
|
char buf[sizeof(x.ar_name)+1];
|
|
register char *p = buf, *q = name;
|
|
|
|
while (q <= &name[sizeof(x.ar_name)-1] && *q) *p++ = *q++;
|
|
*p++ = '\0';
|
|
print(s, buf);
|
|
}
|
|
|
|
#ifdef AAL
|
|
/*
|
|
* Write out the ranlib table: first 4 bytes telling how many ranlib structs
|
|
* there are, followed by the ranlib structs,
|
|
* then 4 bytes giving the size of the string table, followed by the string
|
|
* table itself.
|
|
*/
|
|
void
|
|
write_symdef()
|
|
{
|
|
register struct ranlib *ran;
|
|
register int i;
|
|
register long delta;
|
|
MEMBER arbuf;
|
|
|
|
if (! tnum) return;
|
|
if (odd(tssiz))
|
|
tstrtab[tssiz++] = '\0';
|
|
for (i = 0; i < sizeof(arbuf.ar_name); i++)
|
|
arbuf.ar_name[i] = '\0';
|
|
strcpy(arbuf.ar_name, SYMDEF);
|
|
arbuf.ar_size = 4 + 2 * 4 * (long)tnum + 4 + (long)tssiz;
|
|
time(&arbuf.ar_date);
|
|
arbuf.ar_uid = getuid();
|
|
arbuf.ar_gid = getgid();
|
|
arbuf.ar_mode = 0444;
|
|
#ifdef DISTRIBUTION
|
|
if (distr_fl) {
|
|
arbuf.ar_uid = 2;
|
|
arbuf.ar_gid = 2;
|
|
arbuf.ar_date = distr_time;
|
|
}
|
|
#endif
|
|
wr_arhdr(ar_fd,&arbuf);
|
|
wr_long(ar_fd, (long) tnum);
|
|
/*
|
|
* Account for the space occupied by the magic number
|
|
* and the ranlib table.
|
|
*/
|
|
delta = 2 + AR_TOTAL + arbuf.ar_size;
|
|
for (ran = tab; ran < &tab[tnum]; ran++) {
|
|
ran->ran_pos += delta;
|
|
}
|
|
|
|
wr_ranlib(ar_fd, tab, (long) tnum);
|
|
wr_long(ar_fd, (long) tssiz);
|
|
wr_bytes(ar_fd, tstrtab, (long) tssiz);
|
|
}
|
|
|
|
/*
|
|
* Return whether the bytes in `buf' form a good object header.
|
|
* The header is put in `headp'.
|
|
*/
|
|
int
|
|
is_outhead(headp)
|
|
register struct outhead *headp;
|
|
{
|
|
|
|
return !BADMAGIC(*headp) && headp->oh_nname != 0;
|
|
}
|
|
|
|
void
|
|
do_object(f, size)
|
|
long size;
|
|
{
|
|
struct outhead headbuf;
|
|
|
|
if (size < SZ_HEAD) {
|
|
/* It can't be an object file. */
|
|
return;
|
|
}
|
|
/*
|
|
* Read a header to see if it is an object file.
|
|
*/
|
|
if (! rd_fdopen(f)) {
|
|
rd_fatal();
|
|
}
|
|
rd_ohead(&headbuf);
|
|
if (!is_outhead(&headbuf)) {
|
|
return;
|
|
}
|
|
do_names(&headbuf);
|
|
}
|
|
|
|
/*
|
|
* First skip the names and read in the string table, then seek back to the
|
|
* name table and read and write the names one by one. Update the ranlib table
|
|
* accordingly.
|
|
*/
|
|
do_names(headp)
|
|
struct outhead *headp;
|
|
{
|
|
register char *strings;
|
|
register int nnames = headp->oh_nname;
|
|
#define NNAMES 100
|
|
struct outname namebuf[NNAMES];
|
|
long xxx = OFF_CHAR(*headp);
|
|
|
|
if ( headp->oh_nchar != (unsigned int)headp->oh_nchar ||
|
|
(strings = malloc((unsigned int)headp->oh_nchar)) == (char *)0
|
|
) {
|
|
error(TRUE, "string table too big\n");
|
|
}
|
|
rd_string(strings, headp->oh_nchar);
|
|
while (nnames) {
|
|
int i = nnames >= NNAMES ? NNAMES : nnames;
|
|
register struct outname *p = namebuf;
|
|
|
|
nnames -= i;
|
|
rd_name(namebuf, i);
|
|
while (i--) {
|
|
long off = p->on_foff - xxx;
|
|
if (p->on_foff == (long)0) {
|
|
p++;
|
|
continue; /* An unrecognizable name. */
|
|
}
|
|
p->on_mptr = strings + off;
|
|
/*
|
|
* Only enter names that are exported and are really
|
|
* defined. Also enter common names. Note, that
|
|
* this might cause problems when the name is really
|
|
* defined in a later file, with a value != 0.
|
|
* However, this problem also exists on the Unix
|
|
* ranlib archives.
|
|
*/
|
|
if ( (p->on_type & S_EXT) &&
|
|
(p->on_type & S_TYP) != S_UND
|
|
)
|
|
enter_name(p);
|
|
p++;
|
|
}
|
|
}
|
|
free(strings);
|
|
}
|
|
|
|
enter_name(namep)
|
|
struct outname *namep;
|
|
{
|
|
register char *cp;
|
|
|
|
if (tnum >= tabsz) {
|
|
tab = (struct ranlib *)
|
|
realloc((char *) tab, (tabsz += 512) * sizeof(struct ranlib));
|
|
if (! tab) error(TRUE, "Out of core\n");
|
|
}
|
|
tab[tnum].ran_off = tssiz;
|
|
tab[tnum].ran_pos = offset;
|
|
|
|
for (cp = namep->on_mptr;; cp++) {
|
|
if (tssiz >= strtabsz) {
|
|
tstrtab = realloc(tstrtab, (strtabsz += 4096));
|
|
if (! tstrtab) error(TRUE, "string table overflow\n");
|
|
}
|
|
tstrtab[tssiz++] = *cp;
|
|
if (!*cp) break;
|
|
}
|
|
tnum++;
|
|
}
|
|
#endif /* AAL */
|