SYNTAX
#include "ip.h"
unsigned int ip4_fmt(char *s,char ip[4]);
unsigned int ip4_scan(const char *s,char ip[4]);
unsigned int ip_scan(char *s,char ip[4]);
unsigned int ip4_scanbracket(char *s,char ip[4]);
unsigned int ip_scanbracket(char *ip_str,char *s);
unsigned int ip4_cidr(char *s,char ip[4],unsigned long *plen);
unsigned int ip4_bytestring(stralloc *ip4string,char ip[4],int plen);
DESCRIPTION
ip4_fmt reads the char[4] IPv4 address and returns a dotted-decimal
IPv4 address string 1.2.3.4.
ip4_scan reads an IPv4 address string 1.2.3.4 and converts it to the
char[4] IPv4 address.
ip_scan calls ip4_san in compatibility mode with the first argument als
input and the second as output. Upon detecting an IPvr6 address it call
ip6_scan and otherwise ip4_scan.
ip4_scanbracket reads an IPv4 address string enclosed in brackets
[1.2.3.4] removes the brackets and calls ip4_scan on the result.
ip_scanbracket reads an IP address string enclosed in brackets
[1.2.3.4] or [fe80::1], removes the brackets and calls ip4_scan or
ip6_scan upon detecting an IPv6 address on the result.
ip4_cidr reads the CIDR IPv4 address string 1.2.3.4/15 determines the
prefix as integer plen and calls ip4_scan. If no prefix is identified,
it returns 32.
ip4_bytestring reads the IPv4 address given as char[4] while returning
the 'bytestring' representation 1001001.... up to the given prefix
length plen.
RETURN CODES
The ip(4)* programs return the number of bytes processed.
ip4_bytestring returns negative numbers on failure.
SEE ALSO
ip6(3), socket_if(3)
qlibs:(ipv4)
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