ipv4: IPv4 Address Handling

Data Structures
struct	ipv4addr
Typedefs
typedef uint16	ipv4port
Functions
int	ipv4_parse (const char *s, ipv4addr *addr, const char **end) __attribute__((__deprecated__))
const char *	ipv4_scan (const char *s, ipv4addr *addr)
const char *	ipv4_format (const ipv4addr *addr)
unsigned	fmt_ipv4addr (char *buffer, const ipv4addr *addr)
Variables
const ipv4addr	IPV4ADDR_ANY
const ipv4addr	IPV4ADDR_BROADCAST
const ipv4addr	IPV4ADDR_LOOPBACK

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Typedef Documentation

typedef uint16 ipv4port

IPv4 port number.

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Function Documentation

unsigned fmt_ipv4addr	(	char *	buffer,
		const ipv4addr *	addr
	)

Produce a formatted string from an IPv4 address.

The given buffer must be at least 15 bytes long, or 16 bytes if it needs to contain the standard trailing NUL byte.

Returns:

The number of bytes written to the buffer.

Note:

This routine is thread and recursion safe.

const char* ipv4_format

(

const ipv4addr *

addr

)

Produce a formatted C string from an IPv4 address.

Note:

The return value is statically allocated. Multiple calls to this function will return pointers to the same string.

int ipv4_parse	(	const char *	start,
		ipv4addr *	addr,
		const char **	end
	)

Parse an IPv4 address.

Deprecated:

This function is a wrapper for ipv4_scan.

Returns:

Non-zero (true) if parsing succeeded, and sets *end to the first character past the end of the address.

const char* ipv4_scan	(	const char *	start,
		ipv4addr *	addr
	)

Scan a C string for an IPv4 address.

Returns:

NULL if parsing failed, otherwise a pointer to the first character after the end of the address.

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Variable Documentation

const ipv4addr IPV4ADDR_ANY

IPv4 "any" address constant.

const ipv4addr IPV4ADDR_BROADCAST

IPv4 broadcast address constant.

const ipv4addr IPV4ADDR_LOOPBACK

IPv4 loopback address constant.

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