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libs/libc/netdb: Implemented the netdb functions getnameinfo(), getservbyport(), and getservbyport_r().

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This commit is contained in:
Michael Jung
2019-06-30 15:12:34 -06:00
committed by Gregory Nutt
parent 53119cd476
commit b9d2e516ef
9 changed files with 475 additions and 44 deletions
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libs/libc/netdb/lib_gethostbyaddrr.c
+21 -10
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@@ -53,6 +53,18 @@
#ifdef CONFIG_NETDB_HOSTFILE
/****************************************************************************
* Private Type Definitions
****************************************************************************/
/* This is the layout of the caller provided memory area */
struct hostent_info_s
{
FAR char *hi_addrlist[CONFIG_NETDB_DNSCLIENT_MAXIP + 1];
char hi_data[1];
};
/****************************************************************************
* Private Functions
****************************************************************************/
@@ -113,7 +125,7 @@ static bool lib_lo_ipv6match(FAR const void *addr, socklen_t len, int type)
{
FAR struct in_addr6 *ipv6addr;
if (type == AF_INE6T && len >= sizeof(struct in_addr6))
if (type == AF_INET6 && len >= sizeof(struct in_addr6))
{
ipv6addr = (FAR struct in_addr6 *)addr;
return net_ipv6addr_cmp(ipv6addr->sin6_addr.s6_addr16, g_lo_ipv6addr);
@@ -159,6 +171,9 @@ static int lib_localhost(FAR const void *addr, socklen_t len, int type,
int herrnocode;
int namelen;
memset(host, 0, sizeof(struct hostent));
memset(buf, 0, buflen);
if (lib_lo_ipv4match(addr, len, type))
{
/* Setup to transfer the IPv4 address */
@@ -197,8 +212,6 @@ static int lib_localhost(FAR const void *addr, socklen_t len, int type,
dest = info->hi_data;
buflen -= (sizeof(struct hostent_info_s) - 1);
memset(host, 0, sizeof(struct hostent));
memset(info, 0, sizeof(struct hostent_info_s));
memcpy(dest, src, addrlen);
info->hi_addrlist[0] = dest;
@@ -218,6 +231,8 @@ static int lib_localhost(FAR const void *addr, socklen_t len, int type,
}
strncpy(dest, g_lo_hostname, buflen);
host->h_name = dest;
return 0;
errorout_with_herrnocode:
@@ -314,7 +329,7 @@ int lib_hostfile_lookup(FAR const void *addr, socklen_t len, int type,
ninfo("Comparing addresses...\n");
if (memcmp(addr, hostaddr, len) == 0)
{
/* We have a match */
/* We have a match */
fclose(stream);
return OK;
@@ -356,8 +371,8 @@ errorout_with_herrnocode:
* pointer to a struct of a type depending on the address type, for example
* a struct in_addr * for address type AF_INET.
*
* gethostbyaddr_r() is *not* POSIX but is similar to a Glibc extension and is
* used internally by NuttX to implement the POSIX gethostbyaddr().
* gethostbyaddr_r() is *not* POSIX but is similar to a Glibc extension and
* is used internally by NuttX to implement the POSIX gethostbyaddr().
*
* Input Parameters:
* addr - The address of the host to find.
@@ -379,10 +394,6 @@ int gethostbyaddr_r(FAR const void *addr, socklen_t len, int type,
FAR struct hostent *host, FAR char *buf,
size_t buflen, int *h_errnop)
{
FAR FILE *stream;
int herrnocode;
int nread;
DEBUGASSERT(addr != NULL && host != NULL && buf != NULL);
DEBUGASSERT(type == AF_INET || type == AF_INET6);