Differential D12354 Diff 33011 lib/libc/net/getaddrinfo.c

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lib/libc/net/getaddrinfo.c

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	*/			*/

	/*			/*
	* Issues to be discussed:			* Issues to be discussed:
	* - Return values. There are nonstandard return values defined and used			* - Return values. There are nonstandard return values defined and used
	* in the source code. This is because RFC2553 is silent about which error			* in the source code. This is because RFC2553 is silent about which error
	* code must be returned for which situation.			* code must be returned for which situation.
	* - freeaddrinfo(NULL). RFC2553 is silent about it. XNET 5.2 says it is			* - freeaddrinfo(NULL). RFC2553 is silent about it. XNET 5.2 says it is
	* invalid. current code - SEGV on freeaddrinfo(NULL)			* invalid. Current code accepts NULL to be compatible with other OSes.
	hselaskyUnsubmitted Not Done Inline Actions s/current/Current/ hselasky: s/current/Current/
	*			*
	* Note:			* Note:
	* - The code filters out AFs that are not supported by the kernel,			* - The code filters out AFs that are not supported by the kernel,
	* when globbing NULL hostname (to loopback, or wildcard). Is it the right			* when globbing NULL hostname (to loopback, or wildcard). Is it the right
	* thing to do? What is the relationship with post-RFC2553 AI_ADDRCONFIG			* thing to do? What is the relationship with post-RFC2553 AI_ADDRCONFIG
	* in ai_flags?			* in ai_flags?
	* - (post-2553) semantics of AI_ADDRCONFIG itself is too vague.			* - (post-2553) semantics of AI_ADDRCONFIG itself is too vague.
	* (1) what should we do against numeric hostname (2) what should we do			* (1) what should we do against numeric hostname (2) what should we do
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	#define MATCH(x, y, w) \			#define MATCH(x, y, w) \
	((x) == (y) \|\| (/CONSTCOND/(w) && ((x) == ANY \|\| (y) == ANY)))			((x) == (y) \|\| (/CONSTCOND/(w) && ((x) == ANY \|\| (y) == ANY)))

	void			void
	freeaddrinfo(struct addrinfo *ai)			freeaddrinfo(struct addrinfo *ai)
	{			{
	struct addrinfo *next;			struct addrinfo *next;

	do {			while (ai != NULL) {
	next = ai->ai_next;			next = ai->ai_next;
	if (ai->ai_canonname)
	free(ai->ai_canonname);			free(ai->ai_canonname);
	/* no need to free(ai->ai_addr) */			/* no need to free(ai->ai_addr) */
	free(ai);			free(ai);
	ai = next;			ai = next;
	} while (ai);			}
	}			}

	static int			static int
	str2number(const char p, int portp)			str2number(const char p, int portp)
	{			{
	char *ep;			char *ep;
	unsigned long v;			unsigned long v;

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