si_item_t *
si_addrinfo_v4_mapped(si_mod_t *si, int32_t flags, int32_t sock, int32_t proto, uint16_t port, struct in_addr *addr, uint16_t iface, const char *cname)
{
socket_data_t sockdata;
struct sockaddr_in6 *sa;
int32_t len;
uint32_t unused;
unused = 0;
len = sizeof(struct sockaddr_in6);
memset(&sockdata, 0, sizeof(socket_data_t));
sa = (struct sockaddr_in6 *)&sockdata;
#ifndef ANDROID
sa->sin6_len = len;
#endif
sa->sin6_family = AF_INET6;
sa->sin6_port = htons(port);
memset(&(sa->sin6_addr.__u6_addr.__u6_addr8[10]), 0xff, 2);
memcpy(&(sa->sin6_addr.__u6_addr.__u6_addr8[12]), addr, sizeof(struct in_addr));
/* sin6_scope_id is in host byte order */
sa->sin6_scope_id = iface;
return (si_item_t *)LI_ils_create("L444444444Ss", (unsigned long)si, CATEGORY_ADDRINFO, 1, unused, unused, flags, AF_INET6, sock, proto, len, sockdata, cname);
}
si_item_t *
si_addrinfo_v6(si_mod_t *si, int32_t flags, int32_t sock, int32_t proto, uint16_t port, struct in6_addr *addr, uint16_t iface, const char *cname)
{
socket_data_t sockdata;
struct sockaddr_in6 *sa;
int32_t len;
uint32_t unused;
unused = 0;
len = sizeof(struct sockaddr_in6);
memset(&sockdata, 0, sizeof(socket_data_t));
sa = (struct sockaddr_in6 *)&sockdata;
#ifndef ANDROID
sa->sin6_len = len;
#endif
sa->sin6_family = AF_INET6;
sa->sin6_port = htons(port);
memcpy(&sa->sin6_addr, addr, sizeof(sa->sin6_addr));
/* sin6_scope_id is in host byte order */
sa->sin6_scope_id = iface;
if (IN6_IS_ADDR_LINKLOCAL(&sa->sin6_addr))
{
/* check for embedded scopeid */
uint16_t esid = ntohs(sa->sin6_addr.__u6_addr.__u6_addr16[1]);
if (esid != 0)
{
sa->sin6_addr.__u6_addr.__u6_addr16[1] = 0;
if (iface == 0) sa->sin6_scope_id = esid;
}
}
return (si_item_t *)LI_ils_create("L444444444Ss", (unsigned long)si, CATEGORY_ADDRINFO, 1, unused, unused, flags, AF_INET6, sock, proto, len, sockdata, cname);
}
static si_item_t *
make_hostent6(si_mod_t *si, const char *name, struct in6_addr addr)
{
char *addrs[2];
char *aliases[1];
uint32_t unused;
if (name == NULL) return NULL;
unused = 0;
addrs[0] = (char *)&(addr.__u6_addr.__u6_addr32[0]);
addrs[1] = NULL;
aliases[0] = NULL;
return (si_item_t *)LI_ils_create("L4444s*44c", (unsigned long)si, CATEGORY_HOST_IPV6, 1, unused, unused, name, aliases, AF_INET6, IPV6_ADDR_LEN, addrs);
}
static si_item_t *
make_hostent(si_mod_t *si, const char *name, struct in_addr addr)
{
char *addrs[2];
char *aliases[1];
uint64_t unused;
if (name == NULL) return NULL;
unused = 0;
addrs[0] = (char *)&(addr.s_addr);
addrs[1] = NULL;
aliases[0] = NULL;
return (si_item_t *)LI_ils_create("L4488s*44a", (unsigned long)si, CATEGORY_HOST_IPV4, 1, unused, unused, name, aliases, AF_INET, IPV4_ADDR_LEN, addrs);
}
si_item_t *
si_addrinfo_v4(si_mod_t *si, int32_t flags, int32_t sock, int32_t proto, uint16_t port, struct in_addr *addr, uint16_t iface, const char *cname)
{
socket_data_t sockdata;
struct sockaddr_in *sa;
int32_t len, v32;
uint32_t unused;
unused = 0;
len = sizeof(struct sockaddr_in);
memset(&sockdata, 0, sizeof(socket_data_t));
sa = (struct sockaddr_in *)&sockdata;
sa->sin_len = len;
sa->sin_family = AF_INET;
sa->sin_port = htons(port);
memcpy(&sa->sin_addr, addr, sizeof(sa->sin_addr));
/* Kludge: Jam the interface number into sin_zero (4 bytes). */
v32 = iface;
memmove(sa->sin_zero, &v32, sizeof(uint32_t));
return (si_item_t *)LI_ils_create("L444444444Ss", (unsigned long)si, CATEGORY_ADDRINFO, 1, unused, unused, flags, AF_INET, sock, proto, len, sockdata, cname);
}
/*
* 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;
}
si_item_t *
si_ipnode_byname(si_mod_t *si, const char *name, int family, int flags, const char *interface, uint32_t *err)
{
int i, status, want;
uint32_t if4, if6;
struct in_addr addr4;
struct in6_addr addr6;
si_item_t *item4, *item6;
build_hostent_t *out;
struct hostent *h;
uint32_t unused;
memset(&addr4, 0, sizeof(struct in_addr));
memset(&addr6, 0, sizeof(struct in6_addr));
if (err != NULL) *err = 0;
if (family == AF_INET)
{
status = inet_aton(name, &addr4);
if (status == 1)
{
/* create a host entry */
item4 = make_hostent(si, name, addr4);
if (item4 == NULL)
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
return item4;
}
}
else if (family == AF_INET6)
{
status = inet_pton(family, name, &addr6);
if (status == 1)
{
/* create a host entry */
item6 = make_hostent6(si, name, addr6);
if (item6 == NULL)
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
return item6;
}
status = inet_aton(name, &addr4);
if (status == 1)
{
if (!(flags & (AI_V4MAPPED | AI_V4MAPPED_CFG)))
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_HOST_NOT_FOUND;
return NULL;
}
addr6.__u6_addr.__u6_addr32[0] = 0x00000000;
addr6.__u6_addr.__u6_addr32[1] = 0x00000000;
addr6.__u6_addr.__u6_addr32[2] = htonl(0x0000ffff);
memmove(&(addr6.__u6_addr.__u6_addr32[3]), &(addr4.s_addr), IPV4_ADDR_LEN);
/* create a host entry */
item6 = make_hostent6(si, name, addr6);
if (item6 == NULL)
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
return item6;
}
}
else
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
/*
* IF AI_ADDRCONFIG is set, we need to know what interface flavors we really have.
*/
if4 = 0;
if6 = 0;
if (flags & AI_ADDRCONFIG)
{
if (si_inet_config(&if4, &if6) < 0)
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
/* Bail out if there are no interfaces */
if ((if4 == 0) && (if6 == 0))
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
}
/*
* Figure out what we want.
* If user asked for AF_INET, we only want V4 addresses.
*/
want = WANT_A4_ONLY;
if (family == AF_INET)
{
if ((flags & AI_ADDRCONFIG) && (if4 == 0))
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
}
else if (family == AF_INET6)
{
/* family == AF_INET6 */
want = WANT_A6_ONLY;
if (flags & (AI_V4MAPPED | AI_V4MAPPED_CFG))
{
if (flags & AI_ALL)
{
want = WANT_A6_PLUS_MAPPED_A4;
}
else
{
want = WANT_A6_OR_MAPPED_A4_IF_NO_A6;
}
}
else
{
if ((flags & AI_ADDRCONFIG) && (if6 == 0))
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
}
}
else
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
item6 = NULL;
item4 = NULL;
/* fetch IPv6 data if required */
if ((want == WANT_A6_ONLY) || (want == WANT_A6_OR_MAPPED_A4_IF_NO_A6) || (want == WANT_A6_PLUS_MAPPED_A4))
{
item6 = si_host_byname(si, name, AF_INET6, interface, (uint32_t *)err);
}
/* fetch IPv4 data if required */
if ((want == WANT_A4_ONLY) || (want == WANT_A6_PLUS_MAPPED_A4) || ((want == WANT_A6_OR_MAPPED_A4_IF_NO_A6) && (item6 == NULL)))
{
item4 = si_host_byname(si, name, AF_INET, interface, (uint32_t *)err);
}
if (want == WANT_A4_ONLY)
{
si_item_release(item6);
if ((item4 == NULL) && (err != NULL)) *err = SI_STATUS_H_ERRNO_HOST_NOT_FOUND;
return item4;
}
if (want == WANT_A6_ONLY)
{
si_item_release(item4);
if ((item6 == NULL) && (err != NULL)) *err = SI_STATUS_H_ERRNO_HOST_NOT_FOUND;
return item6;
}
if ((item6 == NULL) && (item4 == NULL))
{
if (err != NULL) *err = SI_STATUS_H_ERRNO_HOST_NOT_FOUND;
return NULL;
}
/* output item will have IPv6 + mapped IPv4 addresses */
out = (build_hostent_t *)calloc(1, sizeof(build_hostent_t));
if (out == NULL)
{
si_item_release(item4);
si_item_release(item6);
if (err != NULL) *err = SI_STATUS_H_ERRNO_NO_RECOVERY;
return NULL;
}
if (item4 != NULL)
{
h = (struct hostent *)((uintptr_t)item4 + sizeof(si_item_t));
out->host.h_name = lower_case(h->h_name);
if (h->h_aliases != NULL)
{
for (i = 0; h->h_aliases[i] != NULL; i++) merge_alias(h->h_aliases[i], out);
}
for (i = 0; h->h_addr_list[i] != 0; i++)
{
addr6.__u6_addr.__u6_addr32[0] = 0x00000000;
addr6.__u6_addr.__u6_addr32[1] = 0x00000000;
addr6.__u6_addr.__u6_addr32[2] = htonl(0x0000ffff);
memmove(&(addr6.__u6_addr.__u6_addr32[3]), h->h_addr_list[i], IPV4_ADDR_LEN);
append_addr((const char *)&addr6, IPV6_ADDR_LEN, out);
}
}
if (item6 != NULL)
{
h = (struct hostent *)((uintptr_t)item6 + sizeof(si_item_t));
if (out->host.h_name == NULL) out->host.h_name = lower_case(h->h_name);
if (h->h_aliases != NULL)
{
for (i = 0; h->h_aliases[i] != NULL; i++) merge_alias(h->h_aliases[i], out);
}
for (i = 0; h->h_addr_list[i] != 0; i++) append_addr(h->h_addr_list[i], IPV6_ADDR_LEN, out);
}
si_item_release(item4);
si_item_release(item6);
unused = 0;
item6 = (si_item_t *)LI_ils_create("L4444s*44c", (unsigned long)si, CATEGORY_HOST_IPV6, 1, unused, unused, out->host.h_name, out->host.h_aliases, AF_INET6, IPV6_ADDR_LEN, out->host.h_addr_list);
free_build_hostent(out);
return item6;
}
