Non-standard functions

Functions
char *	lwip_strnstr (const char *buffer, const char *token, size_t n)
char *	lwip_strnistr (const char *buffer, const char *token, size_t n)
int	lwip_stricmp (const char *str1, const char *str2)
int	lwip_strnicmp (const char *str1, const char *str2, size_t len)
void	lwip_itoa (char *result, size_t bufsize, int number)
int	lwip_memcmp_consttime (const void *s1, const void *s2, size_t len)

Detailed Description

lwIP provides default implementations for non-standard functions. These can be mapped to OS functions to reduce code footprint if desired. All defines related to this section must not be placed in lwipopts.h, but in arch/cc.h! These options cannot be #defined in lwipopts.h since they are not options of lwIP itself, but options of the lwIP port to your system.

Function Documentation

lwip_itoa()

void lwip_itoa	(	char *	result,
		size_t	bufsize,
		int	number )

lwIP default implementation for itoa() non-standard function. This can be #defined to itoa() or snprintf(result, bufsize, "%d", number) depending on your platform port.

Definition at line 222 of file def.c.

lwip_memcmp_consttime()

int lwip_memcmp_consttime	(	const void *	s1,
		const void *	s2,
		size_t	len )

The goal of this function is to compare memory with constant runtime in order to prevent timing attacks to various parts in the stack. To do that, in contrast to memcmp(), it only returns: 0: equal != 0: not equal

Definition at line 274 of file def.c.

lwip_stricmp()

int lwip_stricmp	(	const char *	str1,
		const char *	str2 )

lwIP default implementation for stricmp() non-standard function. This can be #defined to stricmp() depending on your platform port.

Definition at line 151 of file def.c.

lwip_strnicmp()

int lwip_strnicmp	(	const char *	str1,
		const char *	str2,
		size_t	len )

lwIP default implementation for strnicmp() non-standard function. This can be #defined to strnicmp() depending on your platform port.

Definition at line 186 of file def.c.

lwip_strnistr()

char * lwip_strnistr	(	const char *	buffer,
		const char *	token,
		size_t	n )

lwIP default implementation for strnistr() non-standard function. This can be #defined to strnistr() depending on your platform port.

Definition at line 128 of file def.c.

lwip_strnstr()

char * lwip_strnstr	(	const char *	buffer,
		const char *	token,
		size_t	n )

lwIP default implementation for strnstr() non-standard function. This can be #defined to strnstr() depending on your platform port.

Definition at line 105 of file def.c.