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348 lines
7.1 KiB
C
348 lines
7.1 KiB
C
/************************************************************************
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Copyright 1988, 1991 by Carnegie Mellon University
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted, provided
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that the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation, and that the name of Carnegie Mellon University not be used
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in advertising or publicity pertaining to distribution of the software
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without specific, written prior permission.
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CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
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IN NO EVENT SHALL CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
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DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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************************************************************************/
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#ifndef lint
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static char rcsid[] = "$Id: bootpef.c,v 1.2 1994/08/22 22:14:46 gwr Exp $";
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#endif
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/*
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* bootpef - BOOTP Extension File generator
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* Makes an "Extension File" for each host entry that
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* defines an and Extension File. (See RFC1497, tag 18.)
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*
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* HISTORY
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* See ./Changes
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*
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* BUGS
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* See ./ToDo
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*/
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#ifdef __STDC__
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <netinet/in.h>
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#include <arpa/inet.h> /* inet_ntoa */
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#ifndef NO_UNISTD
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#include <unistd.h>
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#endif
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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 <errno.h>
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#include <ctype.h>
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#include <syslog.h>
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#ifndef USE_BFUNCS
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#include <memory.h>
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/* Yes, memcpy is OK here (no overlapped copies). */
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#define bcopy(a,b,c) memcpy(b,a,c)
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#define bzero(p,l) memset(p,0,l)
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#define bcmp(a,b,c) memcmp(a,b,c)
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#endif
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#include "bootp.h"
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#include "hash.h"
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#include "hwaddr.h"
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#include "bootpd.h"
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#include "dovend.h"
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#include "readfile.h"
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#include "report.h"
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#include "tzone.h"
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#include "patchlevel.h"
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#define BUFFERSIZE 0x4000
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#ifndef CONFIG_FILE
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#define CONFIG_FILE "/etc/bootptab"
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#endif
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/*
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* Externals, forward declarations, and global variables
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*/
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#ifdef __STDC__
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#define P(args) args
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#else
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#define P(args) ()
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#endif
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static void dovend_rfc1048 P((struct bootp *, struct host *, int32));
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static void mktagfile P((struct host *));
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static void usage P((void));
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#undef P
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/*
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* General
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*/
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char *progname;
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char *chdir_path;
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int debug = 0; /* Debugging flag (level) */
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byte *buffer;
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/*
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* Globals below are associated with the bootp database file (bootptab).
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*/
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char *bootptab = CONFIG_FILE;
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/*
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* Print "usage" message and exit
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*/
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static void
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usage()
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{
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fprintf(stderr,
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"usage: $s [ -c chdir ] [-d level] [-f configfile] [host...]\n");
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fprintf(stderr, "\t -c n\tset current directory\n");
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fprintf(stderr, "\t -d n\tset debug level\n");
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fprintf(stderr, "\t -f n\tconfig file name\n");
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exit(1);
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}
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/*
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* Initialization such as command-line processing is done and then the
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* main server loop is started.
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*/
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void
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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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struct host *hp;
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char *stmp;
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int n;
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progname = strrchr(argv[0], '/');
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if (progname) progname++;
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else progname = argv[0];
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/* Get work space for making tag 18 files. */
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buffer = (byte *) malloc(BUFFERSIZE);
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if (!buffer) {
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report(LOG_ERR, "malloc failed");
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exit(1);
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}
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/*
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* Set defaults that might be changed by option switches.
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*/
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stmp = NULL;
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/*
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* Read switches.
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*/
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for (argc--, argv++; argc > 0; argc--, argv++) {
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if (argv[0][0] != '-')
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break;
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switch (argv[0][1]) {
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case 'c': /* chdir_path */
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if (argv[0][2]) {
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stmp = &(argv[0][2]);
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} else {
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argc--;
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argv++;
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stmp = argv[0];
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}
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if (!stmp || (stmp[0] != '/')) {
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fprintf(stderr,
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"bootpd: invalid chdir specification\n");
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break;
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}
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chdir_path = stmp;
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break;
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case 'd': /* debug */
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if (argv[0][2]) {
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stmp = &(argv[0][2]);
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} else if (argv[1] && argv[1][0] == '-') {
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/*
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* Backwards-compatible behavior:
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* no parameter, so just increment the debug flag.
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*/
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debug++;
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break;
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} else {
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argc--;
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argv++;
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stmp = argv[0];
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}
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if (!stmp || (sscanf(stmp, "%d", &n) != 1) || (n < 0)) {
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fprintf(stderr,
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"bootpd: invalid debug level\n");
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break;
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}
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debug = n;
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break;
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case 'f': /* config file */
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if (argv[0][2]) {
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stmp = &(argv[0][2]);
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} else {
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argc--;
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argv++;
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stmp = argv[0];
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}
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bootptab = stmp;
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break;
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default:
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fprintf(stderr, "bootpd: unknown switch: -%c\n",
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argv[0][1]);
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usage();
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break;
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}
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}
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/* Get the timezone. */
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tzone_init();
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/* Allocate hash tables. */
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rdtab_init();
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/*
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* Read the bootptab file.
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*/
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readtab(1); /* force read */
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/* Set the cwd (i.e. to /tftpboot) */
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if (chdir_path) {
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if (chdir(chdir_path) < 0)
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report(LOG_ERR, "%s: chdir failed", chdir_path);
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}
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/* If there are host names on the command line, do only those. */
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if (argc > 0) {
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unsigned int tlen, hashcode;
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while (argc) {
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tlen = strlen(argv[0]);
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hashcode = hash_HashFunction((u_char *)argv[0], tlen);
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hp = (struct host *) hash_Lookup(nmhashtable,
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hashcode,
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nmcmp, argv[0]);
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if (!hp) {
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printf("%s: no matching entry\n", argv[0]);
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exit(1);
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}
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if (!hp->flags.exten_file) {
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printf("%s: no extension file\n", argv[0]);
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exit(1);
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}
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mktagfile(hp);
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argv++;
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argc--;
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}
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exit(0);
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}
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/* No host names specified. Do them all. */
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hp = (struct host *) hash_FirstEntry(nmhashtable);
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while (hp != NULL) {
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mktagfile(hp);
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hp = (struct host *) hash_NextEntry(nmhashtable);
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}
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}
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/*
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* Make a "TAG 18" file for this host.
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* (Insert the RFC1497 options.)
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*/
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static void
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mktagfile(hp)
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struct host *hp;
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{
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FILE *fp;
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int bytesleft, len;
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byte *vp;
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char *tmpstr;
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if (!hp->flags.exten_file)
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return;
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vp = buffer;
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bytesleft = BUFFERSIZE;
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bcopy(vm_rfc1048, vp, 4); /* Copy in the magic cookie */
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vp += 4;
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bytesleft -= 4;
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/*
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* The "extension file" options are appended by the following
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* function (which is shared with bootpd.c).
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*/
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len = dovend_rfc1497(hp, vp, bytesleft);
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vp += len;
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bytesleft -= len;
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if (bytesleft < 1) {
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report(LOG_ERR, "%s: too much option data",
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hp->exten_file->string);
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return;
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}
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*vp++ = TAG_END;
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bytesleft--;
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/* Write the buffer to the extension file. */
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printf("Updating \"%s\"\n", hp->exten_file->string);
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if ((fp = fopen(hp->exten_file->string, "w")) == NULL) {
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report(LOG_ERR, "error opening \"%s\": %s",
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hp->exten_file->string, get_errmsg());
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return;
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}
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len = vp - buffer;
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if (len != fwrite(buffer, 1, len, fp)) {
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report(LOG_ERR, "write failed on \"%s\" : %s",
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hp->exten_file->string, get_errmsg());
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}
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fclose(fp);
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} /* dovend_rfc1048 */
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/*
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* Local Variables:
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* tab-width: 4
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* c-indent-level: 4
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* c-argdecl-indent: 4
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* c-continued-statement-offset: 4
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* c-continued-brace-offset: -4
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* c-label-offset: -4
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* c-brace-offset: 0
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* End:
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*/
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