[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 4 | */
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| 5 | #include <fcntl.h>
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| 6 | #include <string.h>
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| 7 | #include <stdlib.h>
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| 8 | #include <stdio.h>
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| 9 | #include <sys/wait.h>
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| 10 | #include <arpa/inet.h>
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| 11 | #include <netdb.h>
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| 12 | #include <netinet/in.h>
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| 13 | #include <stdio.h>
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| 14 | #include <sys/socket.h>
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| 15 | #include <unistd.h>
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| 16 | #include <getopt.h>
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| 17 | #include <time.h>
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| 18 |
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| 19 | #include "dhcpd.h"
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| 20 | #include "leases.h"
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| 21 | #include "libbb_udhcp.h"
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| 22 |
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| 23 | #define REMAINING 0
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| 24 | #define ABSOLUTE 1
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| 25 |
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| 26 |
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| 27 | #ifndef IN_BUSYBOX
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| 28 | static void ATTRIBUTE_NORETURN show_usage(void)
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| 29 | {
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| 30 | printf(
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| 31 | "Usage: dumpleases -f <file> -[r|a]\n\n"
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| 32 | " -f, --file=FILENAME Leases file to load\n"
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| 33 | " -r, --remaining Interepret lease times as time remaining\n"
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| 34 | " -a, --absolute Interepret lease times as expire time\n");
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| 35 | exit(0);
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| 36 | }
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| 37 | #else
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| 38 | #define show_usage bb_show_usage
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| 39 | #endif
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| 40 |
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| 41 |
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| 42 | #ifdef IN_BUSYBOX
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| 43 | int dumpleases_main(int argc, char *argv[])
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| 44 | #else
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| 45 | int main(int argc, char *argv[])
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| 46 | #endif
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| 47 | {
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| 48 | FILE *fp;
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| 49 | int i, c, mode = REMAINING;
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| 50 | long expires;
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| 51 | const char *file = LEASES_FILE;
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| 52 | struct dhcpOfferedAddr lease;
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| 53 | struct in_addr addr;
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| 54 |
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| 55 | static const struct option options[] = {
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| 56 | {"absolute", 0, 0, 'a'},
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| 57 | {"remaining", 0, 0, 'r'},
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| 58 | {"file", 1, 0, 'f'},
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| 59 | {0, 0, 0, 0}
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| 60 | };
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| 61 |
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| 62 | while (1) {
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| 63 | int option_index = 0;
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| 64 | c = getopt_long(argc, argv, "arf:", options, &option_index);
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| 65 | if (c == -1) break;
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| 66 |
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| 67 | switch (c) {
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| 68 | case 'a': mode = ABSOLUTE; break;
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| 69 | case 'r': mode = REMAINING; break;
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| 70 | case 'f':
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| 71 | file = optarg;
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| 72 | break;
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| 73 | default:
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| 74 | show_usage();
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| 75 | }
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| 76 | }
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| 77 |
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| 78 | fp = xfopen(file, "r");
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| 79 |
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| 80 | printf("Mac Address IP-Address Expires %s\n", mode == REMAINING ? "in" : "at");
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| 81 | /* "00:00:00:00:00:00 255.255.255.255 Wed Jun 30 21:49:08 1993" */
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| 82 | while (fread(&lease, sizeof(lease), 1, fp)) {
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| 83 |
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| 84 | for (i = 0; i < 6; i++) {
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| 85 | printf("%02x", lease.chaddr[i]);
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| 86 | if (i != 5) printf(":");
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| 87 | }
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| 88 | addr.s_addr = lease.yiaddr;
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| 89 | printf(" %-15s", inet_ntoa(addr));
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| 90 | expires = ntohl(lease.expires);
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| 91 | printf(" ");
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| 92 | if (mode == REMAINING) {
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| 93 | if (!expires) printf("expired\n");
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| 94 | else {
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| 95 | if (expires > 60*60*24) {
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| 96 | printf("%ld days, ", expires / (60*60*24));
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| 97 | expires %= 60*60*24;
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| 98 | }
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| 99 | if (expires > 60*60) {
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| 100 | printf("%ld hours, ", expires / (60*60));
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| 101 | expires %= 60*60;
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| 102 | }
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| 103 | if (expires > 60) {
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| 104 | printf("%ld minutes, ", expires / 60);
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| 105 | expires %= 60;
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| 106 | }
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| 107 | printf("%ld seconds\n", expires);
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| 108 | }
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| 109 | } else printf("%s", ctime(&expires));
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| 110 | }
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| 111 | fclose(fp);
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| 112 |
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| 113 | return 0;
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| 114 | }
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