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net/ipv4: address prefix and print support

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Martin Stein 2016-08-25 15:47:44 +02:00 committed by Christian Helmuth
parent 0f8a39e5ac
commit ee9c4679df
1 changed files with 79 additions and 0 deletions
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79
repos/os/include/net/ipv4.h
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@ -17,6 +17,7 @@
/* Genode */ /* Genode */
#include <base/exception.h> #include <base/exception.h>
#include <util/string.h> #include <util/string.h>
#include <util/token.h>
#include <util/endian.h> #include <util/endian.h>
#include <net/netaddress.h> #include <net/netaddress.h>
@ -26,6 +27,8 @@ namespace Net
enum { IPV4_ADDR_LEN = 4 }; enum { IPV4_ADDR_LEN = 4 };
typedef Network_address<IPV4_ADDR_LEN, '.', false> Ipv4_address; typedef Network_address<IPV4_ADDR_LEN, '.', false> Ipv4_address;
class Ipv4_address_prefix;
class Ipv4_packet; class Ipv4_packet;
} }
@ -194,4 +197,80 @@ class Net::Ipv4_packet
} __attribute__((packed)); } __attribute__((packed));
struct Net::Ipv4_address_prefix
{
Ipv4_address address;
Genode::uint8_t prefix = 0;
};
namespace Genode {
inline size_t ascii_to(char const *s, Net::Ipv4_address &result);
inline size_t ascii_to(char const *s, Net::Ipv4_address_prefix &result);
}
Genode::size_t Genode::ascii_to(char const *s, Net::Ipv4_address &result)
{
using namespace Net;
struct Scanner_policy_number
{
static bool identifier_char(char c, unsigned i ) {
return Genode::is_digit(c) && c !='.'; }
};
typedef ::Genode::Token<Scanner_policy_number> Token;
Ipv4_address ip_addr;
Token t(s);
char tmpstr[4];
int cnt = 0;
unsigned char ipb[4] = {0};
size_t size = 0;
while(t) {
if (t.type() == Token::WHITESPACE || t[0] == '.') {
t = t.next();
size++;
continue;
}
t.string(tmpstr, sizeof(tmpstr));
unsigned long tmpc = 0;
size += Genode::ascii_to(tmpstr, tmpc);
ipb[cnt] = tmpc & 0xFF;
t = t.next();
if (cnt == 4)
break;
cnt++;
}
if (cnt == 4) {
result.addr[0] = ipb[0];
result.addr[1] = ipb[1];
result.addr[2] = ipb[2];
result.addr[3] = ipb[3];
return size;
}
return 0;
}
Genode::size_t Genode::ascii_to(char const *s, Net::Ipv4_address_prefix &result)
{
size_t size = ascii_to(s, result.address);
if (!size || s[size] != '/') { return 0; }
char const * prefix = &s[size + 1];
size_t const prefix_size = ascii_to_unsigned(prefix, result.prefix, 10);
if (!prefix_size) { return 0; }
size += prefix_size + 1;
return size;
}
#endif /* _IPV4_H_ */ #endif /* _IPV4_H_ */