diff options
Diffstat (limited to 'PICA_netconf.c')
| -rw-r--r-- | PICA_netconf.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/PICA_netconf.c b/PICA_netconf.c new file mode 100644 index 0000000..9657e39 --- /dev/null +++ b/PICA_netconf.c @@ -0,0 +1,28 @@ +#include "PICA_netconf.h" + +#define PREFIX4 htonl(0xf0000000U) +#define PREFIX8 htonl(0xff000000U) +#define PREFIX12 htonl(0xfff00000U) +#define PREFIX16 htonl(0xffff0000U) +#define PREFIX24 htonl(0xffffff00U) + +#define MAKEIP(a, b, c, d) (htonl( (a&0xFF) << 24 | (b&0xFF) << 16 | (c&0xFF) << 8 | (d&0xFF) )) + + +int PICA_is_reserved_addr_ipv4(in_addr_t addr) +{ + if ((addr & PREFIX8) == 0 //0.0.0.0/8 + || (addr & PREFIX8) == MAKEIP(10, 0, 0, 0) //10.0.0.0/8 + || (addr & PREFIX8) == MAKEIP(127, 0, 0, 0)//127.0.0.0/8 + || (addr & PREFIX16) == MAKEIP(169, 254, 0, 0) //169.254.0.0/16 + || (addr & PREFIX12) == MAKEIP(172, 16, 0, 0) //172.16.0.0/12 + || (addr & PREFIX16) == MAKEIP(192, 168, 0, 0) //192.168.0.0/16 + || (addr & PREFIX4) == MAKEIP(224, 0, 0, 0) //224.0.0.0/4 + || (addr & PREFIX4) == MAKEIP(240, 0, 0, 0) //240.0.0.0/4 + || addr == INADDR_BROADCAST + ) + return 1; + + return 0; +} + |