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netsock2: ast_addressfamily_to_sockaddrsize and ast_sockaddr_from_sockaddr.

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ast_addressfamily_to_sockaddrize will determine the size that's
required, and ast_sockaddr_from_sockaddr then wraps this new function
and ast_sockaddr_copy_sockaddr to copy arbitrary sockaddr's (without
knowing the address family) into the ast_sockaddr structure.

Change-Id: Iee604e96e9096c79b477d6e5ff310cf0b06dae86
Signed-off-by: Jaco Kroon <jaco@uls.co.za>
This commit is contained in:
Jaco Kroon
2019-12-03 20:27:38 +02:00
parent 34746220a0
commit 3bc8b36537
1 changed files with 42 additions and 0 deletions
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42
include/asterisk/netsock2.h
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@@ -31,6 +31,8 @@ extern "C" {
#include <netinet/in.h>
#include "asterisk/logger.h"
/*
* String buffer size that can accommodate a fully stringified representation of a
* supported IP address & port:
@@ -781,6 +783,46 @@ int _ast_sockaddr_to_sin(const struct ast_sockaddr *addr,
void _ast_sockaddr_from_sin(struct ast_sockaddr *addr, const struct sockaddr_in *sin,
const char *file, int line, const char *func);
/*!
* \since 13.31.0, 16.8.0, 17.2.0
*
* \brief Takes an AF_XXX value as input and returns the size of the underlying
* sockaddr structure if known, or zero if not.
*
* \param family The AF_XXX value to determine the size of
* \return Size of the applicable struct sockaddr.
*/
#define ast_addressfamily_to_sockaddrsize(family) _ast_addressfamily_to_sockaddrsize(addr, __FILE__, __LINE__, __PRETTY_FUNCTION__)
static inline int _ast_addressfamily_to_sockaddrsize(int af, const char *file, int line, const char *func)
{
switch (af) {
case AF_INET:
return sizeof(struct sockaddr_in);
case AF_INET6:
return sizeof(struct sockaddr_in6);
default:
ast_log(__LOG_WARNING, file, line, func, "Unknown address family %d encountered.\n", af);
return 0;
}
}
/*!
* \since 13.31.0, 16.8.0, 17.2.0
*
* \brief Converts a struct sockaddr to a struct ast_sockaddr.
*
* Note that there is an underlying assumption that sockaddr data is valid, more specifically,
* if sa_family is set to AF_INET that it's actually a sockaddr_in, and in the case of AF_INET6
* a valid sockaddr_in6 structure.
*
* You can check for failure with ast_sockaddr_isnull.
*
* \param[out] addr The address of the ast_sockaddr to store into
* \param sockaddr The sockaddr structure (sockaddr_in or sockaddr_in6) to convert
* \return Nothing
*/
#define ast_sockaddr_from_sockaddr(addr,sockaddr) ast_sockaddr_copy_sockaddr(addr, sockaddr, ast_addressfamily_to_sockaddrsize(((const struct sockaddr*)(sockaddr))->sa_family))
/*@}*/
#if defined(__cplusplus) || defined(c_plusplus)