diff options
author | Ondrej Zajicek <santiago@crfreenet.org> | 2014-10-24 11:11:43 +0200 |
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committer | Ondrej Zajicek <santiago@crfreenet.org> | 2014-10-24 11:11:43 +0200 |
commit | 88a183c6c9a2b86b52f67e87bbc8b7edd32670c6 (patch) | |
tree | b1348b71e69f9ed0d919a4792549026c9e31b092 /lib/ipv4.c | |
parent | f8fefde318c6248ad94e7b6d60155deed9ab8eed (diff) |
Integrated IP functions.
Diffstat (limited to 'lib/ipv4.c')
-rw-r--r-- | lib/ipv4.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/lib/ipv4.c b/lib/ipv4.c deleted file mode 100644 index 751351ca..00000000 --- a/lib/ipv4.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * BIRD Library -- IPv4 Address Manipulation Functions - * - * (c) 1998 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <stdlib.h> - -#include "nest/bird.h" -#include "lib/ip.h" -#include "lib/string.h" - -int -ipv4_classify(u32 a) -{ - u32 b = a >> 24U; - - if (b && b <= 0xdf) - { - if (b == 0x7f) - return IADDR_HOST | SCOPE_HOST; - else if (b == 0x0a || - (a & 0xffff0000) == 0xc0a80000 || - (a & 0xfff00000) == 0xac100000) - return IADDR_HOST | SCOPE_SITE; - else - return IADDR_HOST | SCOPE_UNIVERSE; - } - if (b >= 0xe0 && b <= 0xef) - return IADDR_MULTICAST | SCOPE_UNIVERSE; - if (a == 0xffffffff) - return IADDR_BROADCAST | SCOPE_LINK; - return IADDR_INVALID; -} - -char * -ip_ntop(ip_addr a, char *b) -{ - u32 x = _I(a); - - return b + bsprintf(b, "%d.%d.%d.%d", - ((x >> 24) & 0xff), - ((x >> 16) & 0xff), - ((x >> 8) & 0xff), - (x & 0xff)); -} - -char * -ip_ntox(ip_addr a, char *b) -{ - return b + bsprintf(b, "%08x", _I(a)); -} - -u32 -ipv4_class_mask(u32 a) -{ - u32 m; - - if (a < 0x80000000) - m = 0xff000000; - else if (a < 0xc0000000) - m = 0xffff0000; - else - m = 0xffffff00; - while (a & ~m) - m |= m >> 1; - return m; -} - -int -ip_pton(char *a, ip_addr *o) -{ - int i; - unsigned long int l; - u32 ia = 0; - - i=4; - while (i--) - { - char *d, *c = strchr(a, '.'); - if (!c != !i) - return 0; - l = strtoul(a, &d, 10); - if (d != c && *d || l > 255) - return 0; - ia = (ia << 8) | l; - if (c) - c++; - a = c; - } - *o = ipa_from_u32(ia); - return 1; -} - -byte * -ipv4_skip_header(byte *pkt, int *len) -{ - int l = *len; - int q; - - if (l < 20 || (*pkt & 0xf0) != 0x40) - return NULL; - q = (*pkt & 0x0f) * 4; - if (q > l) - return NULL; - *len -= q; - return pkt + q; -} |