si_item_t *
si_item_call(struct si_mod_s *si, int call, const char *str1, const char *str2, const char *str3, uint32_t num1, uint32_t num2, uint32_t *err)
{
if (si == NULL) return NULL;
switch (call)
{
case SI_CALL_USER_BYNAME: return si_user_byname(si, str1);
case SI_CALL_USER_BYUID: return si_user_byuid(si, (uid_t)num1);
case SI_CALL_GROUP_BYNAME: return si_group_byname(si, str1);
case SI_CALL_GROUP_BYGID: return si_group_bygid(si, (gid_t)num1);
case SI_CALL_GROUPLIST: return si_grouplist(si, str1, (int) num1);
case SI_CALL_ALIAS_BYNAME: return si_alias_byname(si, str1);
case SI_CALL_HOST_BYNAME: return si_host_byname(si, str1, num1, str3, err);
case SI_CALL_HOST_BYADDR: return si_host_byaddr(si, (void *)str1, num1, str3, err);
case SI_CALL_NETWORK_BYNAME: return si_network_byname(si, str1);
case SI_CALL_NETWORK_BYADDR: return si_network_byaddr(si, num1);
case SI_CALL_SERVICE_BYNAME: return si_service_byname(si, str1, str2);
case SI_CALL_SERVICE_BYPORT: return si_service_byport(si, num1, str2);
case SI_CALL_PROTOCOL_BYNAME: return si_protocol_byname(si, str1);
case SI_CALL_PROTOCOL_BYNUMBER: return si_protocol_bynumber(si, num1);
case SI_CALL_RPC_BYNAME: return si_network_byname(si, str1);
case SI_CALL_RPC_BYNUMBER: return si_rpc_bynumber(si, num1);
case SI_CALL_FS_BYSPEC: return si_fs_byspec(si, str1);
case SI_CALL_FS_BYFILE: return si_fs_byfile(si, str1);
case SI_CALL_NAMEINFO: return si_nameinfo(si, (const struct sockaddr *)str1, num1, str3, err);
case SI_CALL_IPNODE_BYNAME: return si_ipnode_byname(si, (const char *)str1, num1, num2, str3, err);
case SI_CALL_MAC_BYNAME: return si_mac_byname(si, (const char *)str1);
case SI_CALL_MAC_BYMAC: return si_mac_bymac(si, (const char *)str1);
/* Support for DNS async calls */
case SI_CALL_DNS_QUERY:
case SI_CALL_DNS_SEARCH:
{
if (si->vtable->sim_item_call == NULL) return NULL;
return si->vtable->sim_item_call(si, call, str1, str2, str3, num1, num2, err);
}
default: return NULL;
}
return NULL;
}
/*
* getnameinfo
*
* We handle some "trival" cases locally. If the caller passes
* NI_NUMERICHOST (only), then this call turns into a getservbyport
* to get the service name + inet_pton() to create a host string.
* If the caller passes NI_NUMERICSERV (only), then we zero out the port
* number, complete the getnameinfo, and use printf() to create a service
* string. If the caller specifies both NI_NUMERICHOST and NI_NUMERICSERV,
* we inet_ntop() and printf() and return the results.
*/
si_item_t *
si_nameinfo(si_mod_t *si, const struct sockaddr *sa, int flags, const char *interface, uint32_t *err)
{
si_item_t *out = NULL;
const struct sockaddr *lookup_sa;
struct sockaddr_in s4;
struct in_addr a4;
struct in6_addr a6;
const uint32_t unused = 0;
void *addr = NULL;
char *host = NULL;
char *serv = NULL;
uint32_t ifnum = 0;
uint16_t port = 0;
int do_host_lookup = ((flags & NI_NUMERICHOST) == 0);
int do_serv_lookup = ((flags & NI_NUMERICSERV) == 0);
/* check input */
if ((si == NULL) || (sa == NULL))
{
if (err != NULL) *err = SI_STATUS_EAI_FAIL;
return NULL;
}
if (err != NULL) *err = SI_STATUS_NO_ERROR;
lookup_sa = sa;
if (sa->sa_family == AF_INET)
{
struct sockaddr_in *s4 = (struct sockaddr_in *)sa;
memcpy(&a4, &s4->sin_addr, sizeof(a4));
port = s4->sin_port;
addr = &a4;
}
else if (sa->sa_family == AF_INET6)
{
struct sockaddr_in6 *s6 = (struct sockaddr_in6 *)sa;
memcpy(&a6, &s6->sin6_addr, sizeof(a6));
port = s6->sin6_port;
/* Look for scope id in IPv6 Link Local, Multicast Node Local, and Multicast Link Local */
if (IN6_IS_ADDR_LINKLOCAL(&s6->sin6_addr) || IN6_IS_ADDR_MC_NODELOCAL(&s6->sin6_addr) || IN6_IS_ADDR_MC_LINKLOCAL(&s6->sin6_addr))
{
ifnum = ntohs(a6.__u6_addr.__u6_addr16[1]);
if (ifnum == 0)
{
ifnum = s6->sin6_scope_id;
a6.__u6_addr.__u6_addr16[1] = htons(ifnum);
}
if ((ifnum != s6->sin6_scope_id) && (s6->sin6_scope_id != 0))
{
if (err != NULL) *err = SI_STATUS_EAI_FAIL;
return NULL;
}
}
/* v4 mapped and compat addresses are converted to plain v4 */
if (IN6_IS_ADDR_V4MAPPED(&s6->sin6_addr) || IN6_IS_ADDR_V4COMPAT(&s6->sin6_addr))
{
memcpy(&a4, &s6->sin6_addr.s6_addr[12], sizeof(a4));
addr = &a4;
memset(&s4, 0, sizeof(s4));
s4.sin_len = sizeof(s4);
s4.sin_family = AF_INET;
s4.sin_port = port;
memcpy(&s4.sin_addr, &a4, sizeof(s4.sin_addr));
lookup_sa = (const struct sockaddr *)&s4;
}
else
{
addr = &a6;
}
}
else
{
if (err != NULL) *err = SI_STATUS_EAI_FAMILY;
return NULL;
}
if (do_host_lookup == 1)
{
si_item_t *item = si_host_byaddr(si, addr, lookup_sa->sa_family, interface, NULL);
if (item != NULL)
{
struct hostent *h;
h = (struct hostent *)((uintptr_t)item + sizeof(si_item_t));
host = strdup(h->h_name);
si_item_release(item);
if (host == NULL)
{
if (err != NULL) *err = SI_STATUS_EAI_MEMORY;
return NULL;
}
}
}
if ((do_serv_lookup == 1) && (port != 0))
{
si_item_t *item = si_service_byport(si, port, NULL);
if (item != NULL)
{
struct servent *s;
s = (struct servent *)((uintptr_t)item + sizeof(si_item_t));
serv = strdup(s->s_name);
si_item_release(item);
if (serv == NULL)
{
free(host);
if (err != NULL) *err = SI_STATUS_EAI_MEMORY;
return NULL;
}
}
}
/*
* Return numeric host name for NI_NUMERICHOST or if lookup failed, but not
* if NI_NAMEREQD is specified (so that we later fail with EAI_NONAME).
*/
if ((host == NULL) && ((flags & NI_NAMEREQD) == 0))
{
char tmp[INET6_ADDRSTRLEN + 1 + IF_NAMESIZE + 1];
tmp[0] = '\0';
if (sa->sa_family == AF_INET)
{
char buf[INET_ADDRSTRLEN];
if (inet_ntop(AF_INET, &a4, buf, sizeof(buf)) != 0)
{
host = strdup(buf);
}
}
else if (sa->sa_family == AF_INET6)
{
char buf[INET6_ADDRSTRLEN];
/* zero the embedded scope ID */
if (ifnum != 0)
{
a6.__u6_addr.__u6_addr16[1] = 0;
}
if (inet_ntop(AF_INET6, &a6, buf, sizeof(buf)) != 0)
{
if (ifnum != 0)
{
char ifname[IF_NAMESIZE];
if (if_indextoname(ifnum, ifname) != NULL)
{
asprintf(&host, "%s%%%s", buf, ifname);
}
else
{
/* ENXIO */
if (err != NULL) *err = SI_STATUS_EAI_FAIL;
return NULL;
}
}
else
{
host = strdup(buf);
}
}
}
}
/* Return numeric service name for NI_NUMERICSERV or if lookup failed. */
if (serv == NULL)
{
asprintf(&serv, "%hu", ntohs(port));
}
if ((host == NULL) || (serv == NULL))
{
if (err != NULL)
{
if ((flags & NI_NAMEREQD) != 0)
{
*err = SI_STATUS_EAI_NONAME;
}
else
{
*err = SI_STATUS_EAI_MEMORY;
}
}
}
else
{
out = (si_item_t *)LI_ils_create("L4444ss", (unsigned long)si, CATEGORY_NAMEINFO, 1, unused, unused, host, serv);
}
free(host);
free(serv);
return out;
}
