source: MondoRescue/branches/stable/mindi-busybox/networking/ipcalc.c @ 1770

Last change on this file since 1770 was 1770, checked in by Bruno Cornec, 12 years ago
  • Better output for mindi-busybox revision
  • Remove dummy file created on NFS - report from Arnaud Tiger <arnaud.tiger_at_hp.com>
  • strace useful for debug
  • fix new versions for pb (2.0.0 for mindi and 1.7.2 for mindi-busybox)
  • fix build process for mindi-busybox + options used in that version (dd for label-partitions-as-necessary)
  • fix typo in label-partitions-as-necessary which doesn't seem to work
  • Update to busybox 1.7.2
  • perl is now required at restore time to support uuid swap partitions (and will be used for many other thigs

in the future for sure)

  • next mindi version will be 2.0.0 due to all the changes made in it (udev may break working distros)
  • small optimization in mindi on keyboard handling (one single find instead of multiple)
  • better interaction for USB device when launching mindi manually
  • attempt to automatically guess block disk size for ramdisk
  • fix typos in bkphw
  • Fix the remaining problem with UUID support for swap partitions
  • Updates mondoarchive man page for USB support
  • Adds preliminary Hardware support to mindi (Proliant SSSTK)
  • Tries to add udev support also for rhel4
  • Fix UUID support which was still broken.
  • Be conservative in test for the start-nfs script
  • Update config file for mindi-busybox for 1.7.2 migration
  • Try to run around a busybox bug (1.2.2 pb on inexistant links)
  • Add build content for mindi-busybox in pb
  • Remove distributions content for mindi-busybox
  • Fix a warning on inexistant raidtab
  • Solve problem on tmpfs in restore init (Problem of inexistant symlink and busybox)
  • Create MONDO_CACHE and use it everywhere + creation at start
  • Really never try to eject a USB device
  • Fix a issue with &> usage (replaced with 1> and 2>)
  • Adds magic file to depllist in order to have file working + ldd which helps for debugging issues
  • tty modes correct to avoid sh error messages
  • Use ext3 normally and not ext2 instead
  • USB device should be corrected after reading (take 1st part)
  • Adds a mount_USB_here function derived from mount_CDROM_here
  • usb detection place before /dev detection in device name at restore time
  • Fix when restoring from USB: media is asked in interactive mode
  • Adds USB support for mondorestore
  • mount_cdrom => mount_media
  • elilo.efi is now searched throughout /boot/efi and not in a fixed place as there is no standard
  • untar-and-softlink => untar (+ interface change)
  • suppress useless softlinks creation/removal in boot process
  • avoids udevd messages on groups
  • Increase # of disks to 99 as in mindi at restore time (should be a conf file parameter)
  • skip existing big file creation
  • seems to work correctly for USB mindi boot
  • Adds group and tty link to udev conf
  • Always load usb-torage (even 2.6) to initiate USB bus discovery
  • Better printing of messages
  • Attempt to fix a bug in supporting OpenSusE 10.3 kernel for initramfs (mindi may now use multiple regex for kernel initrd detection)
  • Links were not correctly done as non relative for modules in mindi
  • exclusion of modules denied now works
  • Also create modules in their ordinary place, so that classical modprobe works + copy modules.dep
  • Fix bugs for DENY_MODS handling
  • Add device /dev/console for udev
  • ide-generic should now really be excluded
  • Fix a bug in major number for tty
  • If udev then adds modprobe/insmod to rootfs
  • tty0 is also cretaed with udev
  • ide-generic put rather in DENY_MODS
  • udevd remove from deplist s handled in mindi directly
  • better default for mindi when using --usb
  • Handles dynamically linked busybox (in case we want to use it soon ;-)
  • Adds fixed devices to create for udev
  • ide-generic should not be part of the initrd when using libata v2
  • support a dynamically linked udev (case on Ubuntu 7.10 and Mandriva 2008.0 so should be quite generic) This will give incitation to move to dyn. linked binaries in the initrd which will help for other tasks (ia6 4)
  • Improvement in udev support (do not use cl options not available in busybox)
  • Udev in mindi
    • auto creation of the right links at boot time with udev-links.conf(from Mandriva 2008.0)
    • rework startup of udev as current makes kernel crash (from Mandriva 2008.0)
    • add support for 64 bits udev
  • Try to render MyInsmod? silent at boot time
  • Adds udev support (mandatory for newest distributions to avoid remapping of devices in a different way as on the original system)
  • We also need vaft format support for USB boot
  • Adds libusual support (Ubuntu 7.10 needs it for USB)
  • Improve Ubuntu/Debian? keyboard detection and support
  • pbinit adapted to new pb (0.8.10). Filtering of docs done in it
  • Suppress some mondo warnings and errors on USB again
  • Tries to fix lack of files in deb mindi package
  • Verify should now work for USB devices
  • More log/mesages improvement for USB support
  • - Supress g_erase_tmpdir_and_scratchdir
  • Improve some log messages for USB support
  • Try to improve install in mindi to avoid issues with isolinux.cfg not installed vene if in the pkg :-(
  • Improve mindi-busybox build
  • In conformity with pb 0.8.9
  • Add support for Ubuntu 7.10 in build process
  • Add USB Key button to Menu UI (CD streamer removed)
  • Attempt to fix error messages on tmp/scratch files at the end by removing those dir at the latest possible.
  • Fix a bug linked to the size of the -E param which could be used (Arnaud Tiger/René? Ribaud).
  • Integrate ~/.pbrc content into mondorescue.pb (required project-builder >= 0.8.7)
  • Put mondorescue in conformity with new pb filtering rules
  • Add USB support at restore time (no test done yet). New start-usb script PB varibale added where useful
  • Unmounting USB device before removal of temporary scratchdir
  • Stil refining USB copy back to mondo (one command was not executed)
  • No need to have the image subdor in the csratchdir when USB.
  • umount the USB partition before attempting to use it
  • Remove useless copy from mindi to mondo at end of USB handling

(risky merge, we are raising the limits of 2 diverging branches. The status of stable is not completely sure as such. Will need lots of tests, but it's not yet done :-()
(merge -r1692:1769 $SVN_M/branches/2.2.5)

File size: 4.4 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Mini ipcalc implementation for busybox
4 *
5 * By Jordan Crouse <jordan@cosmicpenguin.net>
6 *    Stephan Linz  <linz@li-pro.net>
7 *
8 * This is a complete reimplementation of the ipcalc program
9 * from Red Hat.  I didn't look at their source code, but there
10 * is no denying that this is a loving reimplementation
11 *
12 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
13 */
14
15#include <getopt.h>
16#include <sys/socket.h>
17#include <arpa/inet.h>
18
19#include "libbb.h"
20
21#define CLASS_A_NETMASK ntohl(0xFF000000)
22#define CLASS_B_NETMASK ntohl(0xFFFF0000)
23#define CLASS_C_NETMASK ntohl(0xFFFFFF00)
24
25static unsigned long get_netmask(unsigned long ipaddr)
26{
27    ipaddr = htonl(ipaddr);
28
29    if ((ipaddr & 0xC0000000) == 0xC0000000)
30        return CLASS_C_NETMASK;
31    else if ((ipaddr & 0x80000000) == 0x80000000)
32        return CLASS_B_NETMASK;
33    else if ((ipaddr & 0x80000000) == 0)
34        return CLASS_A_NETMASK;
35    else
36        return 0;
37}
38
39#if ENABLE_FEATURE_IPCALC_FANCY
40static int get_prefix(unsigned long netmask)
41{
42    unsigned long msk = 0x80000000;
43    int ret = 0;
44
45    netmask = htonl(netmask);
46    while (msk) {
47        if (netmask & msk)
48            ret++;
49        msk >>= 1;
50    }
51    return ret;
52}
53#else
54int get_prefix(unsigned long netmask);
55#endif
56
57
58#define NETMASK   0x01
59#define BROADCAST 0x02
60#define NETWORK   0x04
61#define NETPREFIX 0x08
62#define HOSTNAME  0x10
63#define SILENT    0x20
64
65#if ENABLE_FEATURE_IPCALC_LONG_OPTIONS
66    static const char ipcalc_longopts[] ALIGN1 =
67        "netmask\0"   No_argument "m"
68        "broadcast\0" No_argument "b"
69        "network\0"   No_argument "n"
70# if ENABLE_FEATURE_IPCALC_FANCY
71        "prefix\0"    No_argument "p"
72        "hostname\0"  No_argument "h"
73        "silent\0"    No_argument "s"
74# endif
75        ;
76#endif
77
78int ipcalc_main(int argc, char **argv);
79int ipcalc_main(int argc, char **argv)
80{
81    unsigned opt;
82    int have_netmask = 0;
83    in_addr_t netmask, broadcast, network, ipaddr;
84    struct in_addr a;
85    char *ipstr;
86
87#if ENABLE_FEATURE_IPCALC_LONG_OPTIONS
88    applet_long_options = ipcalc_longopts;
89#endif
90    opt = getopt32(argv, "mbn" USE_FEATURE_IPCALC_FANCY("phs"));
91    argc -= optind;
92    argv += optind;
93    if (opt & (BROADCAST | NETWORK | NETPREFIX)) {
94        if (argc > 2 || argc <= 0)
95            bb_show_usage();
96    } else {
97        if (argc != 1)
98            bb_show_usage();
99    }
100    if (opt & SILENT)
101        logmode = LOGMODE_NONE; /* Suppress error_msg() output */
102
103    ipstr = argv[0];
104    if (ENABLE_FEATURE_IPCALC_FANCY) {
105        unsigned long netprefix = 0;
106        char *prefixstr;
107
108        prefixstr = ipstr;
109
110        while (*prefixstr) {
111            if (*prefixstr == '/') {
112                *prefixstr = (char)0;
113                prefixstr++;
114                if (*prefixstr) {
115                    unsigned msk;
116                    netprefix = xatoul_range(prefixstr, 0, 32);
117                    netmask = 0;
118                    msk = 0x80000000;
119                    while (netprefix > 0) {
120                        netmask |= msk;
121                        msk >>= 1;
122                        netprefix--;
123                    }
124                    netmask = htonl(netmask);
125                    /* Even if it was 0, we will signify that we have a netmask. This allows */
126                    /* for specification of default routes, etc which have a 0 netmask/prefix */
127                    have_netmask = 1;
128                }
129                break;
130            }
131            prefixstr++;
132        }
133    }
134    ipaddr = inet_aton(ipstr, &a);
135
136    if (ipaddr == 0) {
137        bb_error_msg_and_die("bad IP address: %s", argv[0]);
138    }
139    ipaddr = a.s_addr;
140
141    if (argc == 2) {
142        if (ENABLE_FEATURE_IPCALC_FANCY && have_netmask) {
143            bb_error_msg_and_die("use prefix or netmask, not both");
144        }
145
146        netmask = inet_aton(argv[1], &a);
147        if (netmask == 0) {
148            bb_error_msg_and_die("bad netmask: %s", argv[1]);
149        }
150        netmask = a.s_addr;
151    } else {
152
153        /* JHC - If the netmask wasn't provided then calculate it */
154        if (!ENABLE_FEATURE_IPCALC_FANCY || !have_netmask)
155            netmask = get_netmask(ipaddr);
156    }
157
158    if (opt & NETMASK) {
159        printf("NETMASK=%s\n", inet_ntoa((*(struct in_addr *) &netmask)));
160    }
161
162    if (opt & BROADCAST) {
163        broadcast = (ipaddr & netmask) | ~netmask;
164        printf("BROADCAST=%s\n", inet_ntoa((*(struct in_addr *) &broadcast)));
165    }
166
167    if (opt & NETWORK) {
168        network = ipaddr & netmask;
169        printf("NETWORK=%s\n", inet_ntoa((*(struct in_addr *) &network)));
170    }
171
172    if (ENABLE_FEATURE_IPCALC_FANCY) {
173        if (opt & NETPREFIX) {
174            printf("PREFIX=%i\n", get_prefix(netmask));
175        }
176
177        if (opt & HOSTNAME) {
178            struct hostent *hostinfo;
179            int x;
180
181            hostinfo = gethostbyaddr((char *) &ipaddr, sizeof(ipaddr), AF_INET);
182            if (!hostinfo) {
183                bb_herror_msg_and_die("cannot find hostname for %s", argv[0]);
184            }
185            for (x = 0; hostinfo->h_name[x]; x++) {
186                hostinfo->h_name[x] = tolower(hostinfo->h_name[x]);
187            }
188
189            printf("HOSTNAME=%s\n", hostinfo->h_name);
190        }
191    }
192
193    return EXIT_SUCCESS;
194}
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