/* Set address from a name */
PJ_DEF(pj_status_t) pj_sockaddr_set_str_addr(int af,
pj_sockaddr *addr,
const pj_str_t *str_addr)
{
pj_status_t status;
if (af == PJ_AF_INET) {
return pj_sockaddr_in_set_str_addr(&addr->ipv4, str_addr);
}
PJ_ASSERT_RETURN(af==PJ_AF_INET6, PJ_EAFNOTSUP);
/* IPv6 specific */
addr->ipv6.sin6_family = PJ_AF_INET6;
PJ_SOCKADDR_RESET_LEN(addr);
if (str_addr && str_addr->slen) {
status = pj_inet_pton(PJ_AF_INET6, str_addr, &addr->ipv6.sin6_addr);
if (status != PJ_SUCCESS) {
pj_addrinfo ai;
unsigned count = 1;
status = pj_getaddrinfo(PJ_AF_INET6, str_addr, &count, &ai);
if (status==PJ_SUCCESS) {
pj_memcpy(&addr->ipv6.sin6_addr, &ai.ai_addr.ipv6.sin6_addr,
sizeof(pj_sockaddr_in6));
}
}
} else {
status = PJ_SUCCESS;
}
return status;
}
/*
* Internal:
* determine if an address is a valid IP address, and if it is,
* return the IP version (4 or 6).
*/
static int get_ip_addr_ver(const pj_str_t *host)
{
pj_in_addr dummy;
pj_in6_addr dummy6;
/* First check if this is an IPv4 address */
if (pj_inet_pton(pj_AF_INET(), host, &dummy) == PJ_SUCCESS)
return 4;
/* Then check if this is an IPv6 address */
if (pj_inet_pton(pj_AF_INET6(), host, &dummy6) == PJ_SUCCESS)
return 6;
/* Not an IP address */
return 0;
}
/* Start socket. */
PJ_DEF(pj_status_t) pj_stun_sock_start( pj_stun_sock *stun_sock,
const pj_str_t *domain,
pj_uint16_t default_port,
pj_dns_resolver *resolver)
{
pj_status_t status;
PJ_ASSERT_RETURN(stun_sock && domain && default_port, PJ_EINVAL);
/* Check whether the domain contains IP address */
stun_sock->srv_addr.addr.sa_family = (pj_uint16_t)stun_sock->af;
status = pj_inet_pton(stun_sock->af, domain,
pj_sockaddr_get_addr(&stun_sock->srv_addr));
if (status != PJ_SUCCESS) {
stun_sock->srv_addr.addr.sa_family = (pj_uint16_t)0;
}
/* If resolver is set, try to resolve with DNS SRV first. It
* will fallback to DNS A/AAAA when no SRV record is found.
*/
if (status != PJ_SUCCESS && resolver) {
const pj_str_t res_name = pj_str("_stun._udp.");
unsigned opt;
pj_assert(stun_sock->q == NULL);
opt = PJ_DNS_SRV_FALLBACK_A;
if (stun_sock->af == pj_AF_INET6()) {
opt |= (PJ_DNS_SRV_RESOLVE_AAAA | PJ_DNS_SRV_FALLBACK_AAAA);
}
status = pj_dns_srv_resolve(domain, &res_name, default_port,
stun_sock->pool, resolver, opt,
stun_sock, &dns_srv_resolver_cb,
&stun_sock->q);
/* Processing will resume when the DNS SRV callback is called */
return status;
} else {
if (status != PJ_SUCCESS) {
pj_addrinfo ai;
unsigned cnt = 1;
status = pj_getaddrinfo(stun_sock->af, domain, &cnt, &ai);
if (status != PJ_SUCCESS)
return status;
pj_sockaddr_cp(&stun_sock->srv_addr, &ai.ai_addr);
}
pj_sockaddr_set_port(&stun_sock->srv_addr, (pj_uint16_t)default_port);
/* Start sending Binding request */
return get_mapped_addr(stun_sock);
}
}
/* Resolve IPv4/IPv6 address */
PJ_DEF(pj_status_t) pj_getaddrinfo(int af, const pj_str_t *nodename,
unsigned *count, pj_addrinfo ai[])
{
#if defined(PJ_SOCK_HAS_GETADDRINFO) && PJ_SOCK_HAS_GETADDRINFO!=0
char nodecopy[PJ_MAX_HOSTNAME];
struct addrinfo hint, *res, *orig_res;
unsigned i;
int rc;
PJ_ASSERT_RETURN(nodename && count && *count && ai, PJ_EINVAL);
PJ_ASSERT_RETURN(nodename->ptr && nodename->slen, PJ_EINVAL);
PJ_ASSERT_RETURN(af==PJ_AF_INET || af==PJ_AF_INET6 ||
af==PJ_AF_UNSPEC, PJ_EINVAL);
/* Check if nodename is IP address */
pj_bzero(&ai[0], sizeof(ai[0]));
if (af == PJ_AF_UNSPEC) {
if (pj_inet_pton(PJ_AF_INET, nodename,
&ai[0].ai_addr.ipv4.sin_addr) == PJ_SUCCESS)
{
af = PJ_AF_INET;
}
else if (pj_inet_pton(PJ_AF_INET6, nodename,
&ai[0].ai_addr.ipv6.sin6_addr) == PJ_SUCCESS)
{
af = PJ_AF_INET6;
}
if (af != PJ_AF_UNSPEC) {
pj_str_t tmp;
tmp.ptr = ai[0].ai_canonname;
pj_strncpy_with_null(&tmp, nodename, PJ_MAX_HOSTNAME);
ai[0].ai_addr.addr.sa_family = (pj_uint16_t)af;
*count = 1;
return PJ_SUCCESS;
}
}
/* Copy node name to null terminated string. */
if (nodename->slen >= PJ_MAX_HOSTNAME)
return PJ_ENAMETOOLONG;
pj_memcpy(nodecopy, nodename->ptr, nodename->slen);
nodecopy[nodename->slen] = '\0';
/* Call getaddrinfo() */
pj_bzero(&hint, sizeof(hint));
hint.ai_family = af;
rc = getaddrinfo(nodecopy, NULL, &hint, &res);
if (rc != 0)
return PJ_ERESOLVE;
orig_res = res;
/* Enumerate each item in the result */
for (i=0; i<*count && res; res=res->ai_next) {
/* Ignore unwanted address families */
if (af!=PJ_AF_UNSPEC && res->ai_family != af)
continue;
/* Store canonical name (possibly truncating the name) */
if (res->ai_canonname) {
pj_ansi_strncpy(ai[i].ai_canonname, res->ai_canonname,
sizeof(ai[i].ai_canonname));
ai[i].ai_canonname[sizeof(ai[i].ai_canonname)-1] = '\0';
} else {
pj_ansi_strcpy(ai[i].ai_canonname, nodecopy);
}
/* Store address */
PJ_ASSERT_ON_FAIL(res->ai_addrlen <= sizeof(pj_sockaddr), continue);
pj_memcpy(&ai[i].ai_addr, res->ai_addr, res->ai_addrlen);
PJ_SOCKADDR_RESET_LEN(&ai[i].ai_addr);
/* Next slot */
++i;
}
*count = i;
freeaddrinfo(orig_res);
/* Done */
return PJ_SUCCESS;
#else /* PJ_SOCK_HAS_GETADDRINFO */
PJ_ASSERT_RETURN(count && *count, PJ_EINVAL);
/* Check if nodename is IP address */
pj_bzero(&ai[0], sizeof(ai[0]));
if (af == PJ_AF_UNSPEC) {
if (pj_inet_pton(PJ_AF_INET, nodename,
&ai[0].ai_addr.ipv4.sin_addr) == PJ_SUCCESS)
{
af = PJ_AF_INET;
}
else if (pj_inet_pton(PJ_AF_INET6, nodename,
&ai[0].ai_addr.ipv6.sin6_addr) == PJ_SUCCESS)
{
af = PJ_AF_INET6;
}
if (af != PJ_AF_UNSPEC) {
pj_str_t tmp;
tmp.ptr = ai[0].ai_canonname;
pj_strncpy_with_null(&tmp, nodename, PJ_MAX_HOSTNAME);
ai[0].ai_addr.addr.sa_family = (pj_uint16_t)af;
*count = 1;
return PJ_SUCCESS;
}
}
if (af == PJ_AF_INET || af == PJ_AF_UNSPEC) {
pj_hostent he;
unsigned i, max_count;
pj_status_t status;
/* VC6 complains that "he" is uninitialized */
#ifdef _MSC_VER
pj_bzero(&he, sizeof(he));
#endif
status = pj_gethostbyname(nodename, &he);
if (status != PJ_SUCCESS)
return status;
max_count = *count;
*count = 0;
pj_bzero(ai, max_count * sizeof(pj_addrinfo));
for (i=0; he.h_addr_list[i] && *count<max_count; ++i) {
pj_ansi_strncpy(ai[*count].ai_canonname, he.h_name,
sizeof(ai[*count].ai_canonname));
ai[*count].ai_canonname[sizeof(ai[*count].ai_canonname)-1] = '\0';
ai[*count].ai_addr.ipv4.sin_family = PJ_AF_INET;
pj_memcpy(&ai[*count].ai_addr.ipv4.sin_addr,
he.h_addr_list[i], he.h_length);
PJ_SOCKADDR_RESET_LEN(&ai[*count].ai_addr);
(*count)++;
}
return PJ_SUCCESS;
} else {
/* IPv6 is not supported */
*count = 0;
return PJ_EIPV6NOTSUP;
}
#endif /* PJ_SOCK_HAS_GETADDRINFO */
}
/*
* This is the main function for performing server resolution.
*/
PJ_DEF(void) pjsip_resolve( pjsip_resolver_t *resolver,
pj_pool_t *pool,
const pjsip_host_info *target,
void *token,
pjsip_resolver_callback *cb)
{
pjsip_server_addresses svr_addr;
pj_status_t status = PJ_SUCCESS;
int ip_addr_ver;
struct query *query;
pjsip_transport_type_e type = target->type;
/* Is it IP address or hostname? And if it's an IP, which version? */
ip_addr_ver = get_ip_addr_ver(&target->addr.host);
/* Set the transport type if not explicitly specified.
* RFC 3263 section 4.1 specify rules to set up this.
*/
if (type == PJSIP_TRANSPORT_UNSPECIFIED) {
if (ip_addr_ver || (target->addr.port != 0)) {
#if PJ_HAS_TCP
if (target->flag & PJSIP_TRANSPORT_SECURE)
{
type = PJSIP_TRANSPORT_TLS;
} else if (target->flag & PJSIP_TRANSPORT_RELIABLE)
{
type = PJSIP_TRANSPORT_TCP;
} else
#endif
{
type = PJSIP_TRANSPORT_UDP;
}
} else {
/* No type or explicit port is specified, and the address is
* not IP address.
* In this case, full NAPTR resolution must be performed.
* But we don't support it (yet).
*/
#if PJ_HAS_TCP
if (target->flag & PJSIP_TRANSPORT_SECURE)
{
type = PJSIP_TRANSPORT_TLS;
} else if (target->flag & PJSIP_TRANSPORT_RELIABLE)
{
type = PJSIP_TRANSPORT_TCP;
} else
#endif
{
type = PJSIP_TRANSPORT_UDP;
}
}
/* Add IPv6 flag for IPv6 address */
if (ip_addr_ver == 6)
type = (pjsip_transport_type_e)((int)type + PJSIP_TRANSPORT_IPV6);
}
/* If target is an IP address, or if resolver is not configured,
* we can just finish the resolution now using pj_gethostbyname()
*/
if (ip_addr_ver || resolver->res == NULL) {
char addr_str[PJ_INET6_ADDRSTRLEN+10];
pj_uint16_t srv_port;
if (ip_addr_ver != 0) {
/* Target is an IP address, no need to resolve */
if (ip_addr_ver == 4) {
pj_sockaddr_init(pj_AF_INET(), &svr_addr.entry[0].addr,
NULL, 0);
pj_inet_aton(&target->addr.host,
&svr_addr.entry[0].addr.ipv4.sin_addr);
} else {
pj_sockaddr_init(pj_AF_INET6(), &svr_addr.entry[0].addr,
NULL, 0);
pj_inet_pton(pj_AF_INET6(), &target->addr.host,
&svr_addr.entry[0].addr.ipv6.sin6_addr);
}
} else {
pj_addrinfo ai;
unsigned count;
int af;
PJ_LOG(5,(THIS_FILE,
"DNS resolver not available, target '%.*s:%d' type=%s "
"will be resolved with getaddrinfo()",
target->addr.host.slen,
target->addr.host.ptr,
target->addr.port,
pjsip_transport_get_type_name(target->type)));
if (type & PJSIP_TRANSPORT_IPV6) {
af = pj_AF_INET6();
} else {
af = pj_AF_INET();
}
/* Resolve */
count = 1;
status = pj_getaddrinfo(af, &target->addr.host, &count, &ai);
if (status != PJ_SUCCESS)
goto on_error;
svr_addr.entry[0].addr.addr.sa_family = (pj_uint16_t)af;
pj_memcpy(&svr_addr.entry[0].addr, &ai.ai_addr,
sizeof(pj_sockaddr));
}
/* Set the port number */
if (target->addr.port == 0) {
srv_port = (pj_uint16_t)
pjsip_transport_get_default_port_for_type(type);
} else {
srv_port = (pj_uint16_t)target->addr.port;
}
pj_sockaddr_set_port(&svr_addr.entry[0].addr, srv_port);
/* Call the callback. */
PJ_LOG(5,(THIS_FILE,
"Target '%.*s:%d' type=%s resolved to "
"'%s' type=%s (%s)",
(int)target->addr.host.slen,
target->addr.host.ptr,
target->addr.port,
pjsip_transport_get_type_name(target->type),
pj_sockaddr_print(&svr_addr.entry[0].addr, addr_str,
sizeof(addr_str), 3),
pjsip_transport_get_type_name(type),
pjsip_transport_get_type_desc(type)));
svr_addr.count = 1;
svr_addr.entry[0].priority = 0;
svr_addr.entry[0].weight = 0;
svr_addr.entry[0].type = type;
svr_addr.entry[0].addr_len = pj_sockaddr_get_len(&svr_addr.entry[0].addr);
(*cb)(status, token, &svr_addr);
/* Done. */
return;
}
/* Target is not an IP address so we need to resolve it. */
#if PJSIP_HAS_RESOLVER
/* Build the query state */
query = PJ_POOL_ZALLOC_T(pool, struct query);
query->objname = THIS_FILE;
query->token = token;
query->cb = cb;
query->req.target = *target;
pj_strdup(pool, &query->req.target.addr.host, &target->addr.host);
/* If port is not specified, start with SRV resolution
* (should be with NAPTR, but we'll do that later)
*/
PJ_TODO(SUPPORT_DNS_NAPTR);
/* Build dummy NAPTR entry */
query->naptr_cnt = 1;
pj_bzero(&query->naptr[0], sizeof(query->naptr[0]));
query->naptr[0].order = 0;
query->naptr[0].pref = 0;
query->naptr[0].type = type;
pj_strdup(pool, &query->naptr[0].name, &target->addr.host);
/* Start DNS SRV or A resolution, depending on whether port is specified */
if (target->addr.port == 0) {
query->query_type = PJ_DNS_TYPE_SRV;
query->req.def_port = 5060;
if (type == PJSIP_TRANSPORT_TLS) {
query->naptr[0].res_type = pj_str("_sips._tcp.");
query->req.def_port = 5061;
} else if (type == PJSIP_TRANSPORT_TCP)
query->naptr[0].res_type = pj_str("_sip._tcp.");
else if (type == PJSIP_TRANSPORT_UDP)
query->naptr[0].res_type = pj_str("_sip._udp.");
else {
pj_assert(!"Unknown transport type");
query->naptr[0].res_type = pj_str("_sip._udp.");
}
} else {
/* Otherwise if port is specified, start with A (or AAAA) host
* resolution
*/
query->query_type = PJ_DNS_TYPE_A;
query->naptr[0].res_type.slen = 0;
query->req.def_port = target->addr.port;
}
/* Start the asynchronous query */
PJ_LOG(5, (query->objname,
"Starting async DNS %s query: target=%.*s%.*s, transport=%s, "
"port=%d",
pj_dns_get_type_name(query->query_type),
(int)query->naptr[0].res_type.slen,
query->naptr[0].res_type.ptr,
(int)query->naptr[0].name.slen, query->naptr[0].name.ptr,
pjsip_transport_get_type_name(target->type),
target->addr.port));
if (query->query_type == PJ_DNS_TYPE_SRV) {
unsigned option = PJ_TRUE;
if (type & PJSIP_TRANSPORT_IPV6) {
option |= PJ_DNS_SRV_FALLBACK_GETADDRINFO_IPV6;
} else {
option |= PJ_DNS_SRV_FALLBACK_GETADDRINFO_IPV4;
}
status = pj_dns_srv_resolve(&query->naptr[0].name,
&query->naptr[0].res_type,
query->req.def_port, pool, resolver->res,
option, query, &srv_resolver_cb, NULL);
} else if (query->query_type == PJ_DNS_TYPE_A) {
status = pj_dns_resolver_start_query(resolver->res,
&query->naptr[0].name,
PJ_DNS_TYPE_A, 0,
&dns_a_callback,
query, &query->object);
} else {
pj_assert(!"Unexpected");
status = PJ_EBUG;
}
if (status != PJ_SUCCESS)
goto on_error;
return;
#else /* PJSIP_HAS_RESOLVER */
PJ_UNUSED_ARG(pool);
PJ_UNUSED_ARG(query);
PJ_UNUSED_ARG(srv_name);
#endif /* PJSIP_HAS_RESOLVER */
on_error:
if (status != PJ_SUCCESS) {
char errmsg[PJ_ERR_MSG_SIZE];
PJ_LOG(4,(THIS_FILE, "Failed to resolve '%.*s'. Err=%d (%s)",
(int)target->addr.host.slen,
target->addr.host.ptr,
status,
pj_strerror(status,errmsg,sizeof(errmsg)).ptr));
(*cb)(status, token, NULL);
return;
}
}
static int format_test(void)
{
pj_str_t s = pj_str(ADDRESS);
unsigned char *p;
pj_in_addr addr;
char zero[64];
pj_sockaddr_in addr2;
const pj_str_t *hostname;
const unsigned char A[] = {127, 0, 0, 1};
PJ_LOG(3,("test", "...format_test()"));
/* pj_inet_aton() */
if (pj_inet_aton(&s, &addr) != 1)
return -10;
/* Check the result. */
p = (unsigned char*)&addr;
if (p[0]!=A[0] || p[1]!=A[1] || p[2]!=A[2] || p[3]!=A[3]) {
PJ_LOG(3,("test", " error: mismatched address. p0=%d, p1=%d, "
"p2=%d, p3=%d", p[0] & 0xFF, p[1] & 0xFF,
p[2] & 0xFF, p[3] & 0xFF));
return -15;
}
/* pj_inet_ntoa() */
p = (unsigned char*) pj_inet_ntoa(addr);
if (!p)
return -20;
if (pj_strcmp2(&s, (char*)p) != 0)
return -22;
#if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0
/* pj_inet_pton() */
/* pj_inet_ntop() */
{
const pj_str_t s_ipv4 = pj_str("127.0.0.1");
const pj_str_t s_ipv6 = pj_str("fe80::2ff:83ff:fe7c:8b42");
char buf_ipv4[PJ_INET_ADDRSTRLEN];
char buf_ipv6[PJ_INET6_ADDRSTRLEN];
pj_in_addr ipv4;
pj_in6_addr ipv6;
if (pj_inet_pton(pj_AF_INET(), &s_ipv4, &ipv4) != PJ_SUCCESS)
return -24;
p = (unsigned char*)&ipv4;
if (p[0]!=A[0] || p[1]!=A[1] || p[2]!=A[2] || p[3]!=A[3]) {
return -25;
}
if (pj_inet_pton(pj_AF_INET6(), &s_ipv6, &ipv6) != PJ_SUCCESS)
return -26;
p = (unsigned char*)&ipv6;
if (p[0] != 0xfe || p[1] != 0x80 || p[2] != 0 || p[3] != 0 ||
p[4] != 0 || p[5] != 0 || p[6] != 0 || p[7] != 0 ||
p[8] != 0x02 || p[9] != 0xff || p[10] != 0x83 || p[11] != 0xff ||
p[12]!=0xfe || p[13]!=0x7c || p[14] != 0x8b || p[15]!=0x42)
{
return -27;
}
if (pj_inet_ntop(pj_AF_INET(), &ipv4, buf_ipv4, sizeof(buf_ipv4)) != PJ_SUCCESS)
return -28;
if (pj_stricmp2(&s_ipv4, buf_ipv4) != 0)
return -29;
if (pj_inet_ntop(pj_AF_INET6(), &ipv6, buf_ipv6, sizeof(buf_ipv6)) != PJ_SUCCESS)
return -30;
if (pj_stricmp2(&s_ipv6, buf_ipv6) != 0)
return -31;
}
#endif /* PJ_HAS_IPV6 */
/* Test that pj_sockaddr_in_init() initialize the whole structure,
* including sin_zero.
*/
pj_sockaddr_in_init(&addr2, 0, 1000);
pj_bzero(zero, sizeof(zero));
if (pj_memcmp(addr2.sin_zero, zero, sizeof(addr2.sin_zero)) != 0)
return -35;
/* pj_gethostname() */
hostname = pj_gethostname();
if (!hostname || !hostname->ptr || !hostname->slen)
return -40;
PJ_LOG(3,("test", "....hostname is %.*s",
(int)hostname->slen, hostname->ptr));
/* pj_gethostaddr() */
/* Various constants */
#if !defined(PJ_SYMBIAN) || PJ_SYMBIAN==0
if (PJ_AF_INET==0xFFFF) return -5500;
if (PJ_AF_INET6==0xFFFF) return -5501;
/* 0xFFFF could be a valid SOL_SOCKET (e.g: on some Win or Mac) */
//if (PJ_SOL_SOCKET==0xFFFF) return -5503;
if (PJ_SOL_IP==0xFFFF) return -5502;
if (PJ_SOL_TCP==0xFFFF) return -5510;
if (PJ_SOL_UDP==0xFFFF) return -5520;
if (PJ_SOL_IPV6==0xFFFF) return -5530;
if (PJ_SO_TYPE==0xFFFF) return -5540;
if (PJ_SO_RCVBUF==0xFFFF) return -5550;
if (PJ_SO_SNDBUF==0xFFFF) return -5560;
if (PJ_TCP_NODELAY==0xFFFF) return -5570;
if (PJ_SO_REUSEADDR==0xFFFF) return -5580;
if (PJ_MSG_OOB==0xFFFF) return -5590;
if (PJ_MSG_PEEK==0xFFFF) return -5600;
#endif
return 0;
}
/* Get IP interface for sending to the specified destination */
PJ_DEF(pj_status_t) pj_getipinterface(int af,
const pj_str_t *dst,
pj_sockaddr *itf_addr,
pj_bool_t allow_resolve,
pj_sockaddr *p_dst_addr)
{
pj_sockaddr dst_addr;
pj_sock_t fd;
int len;
pj_uint8_t zero[64];
pj_status_t status;
pj_sockaddr_init(af, &dst_addr, NULL, 53);
status = pj_inet_pton(af, dst, pj_sockaddr_get_addr(&dst_addr));
if (status != PJ_SUCCESS) {
/* "dst" is not an IP address. */
if (allow_resolve) {
status = pj_sockaddr_init(af, &dst_addr, dst, 53);
} else {
pj_str_t cp;
if (af == PJ_AF_INET) {
cp = pj_str("1.1.1.1");
} else {
cp = pj_str("1::1");
}
status = pj_sockaddr_init(af, &dst_addr, &cp, 53);
}
if (status != PJ_SUCCESS)
return status;
}
/* Create UDP socket and connect() to the destination IP */
status = pj_sock_socket(af, pj_SOCK_DGRAM(), 0, &fd);
if (status != PJ_SUCCESS) {
return status;
}
status = pj_sock_connect(fd, &dst_addr, pj_sockaddr_get_len(&dst_addr));
if (status != PJ_SUCCESS) {
pj_sock_close(fd);
return status;
}
len = sizeof(*itf_addr);
status = pj_sock_getsockname(fd, itf_addr, &len);
if (status != PJ_SUCCESS) {
pj_sock_close(fd);
return status;
}
pj_sock_close(fd);
/* Check that the address returned is not zero */
pj_bzero(zero, sizeof(zero));
if (pj_memcmp(pj_sockaddr_get_addr(itf_addr), zero,
pj_sockaddr_get_addr_len(itf_addr))==0)
{
return PJ_ENOTFOUND;
}
if (p_dst_addr)
*p_dst_addr = dst_addr;
return PJ_SUCCESS;
}
/* Resolve IPv4/IPv6 address */
PJ_DEF(pj_status_t) pj_getaddrinfo(int af, const pj_str_t *nodename,
unsigned *count, pj_addrinfo ai[])
{
#if defined(PJ_SOCK_HAS_GETADDRINFO) && PJ_SOCK_HAS_GETADDRINFO!=0
char nodecopy[PJ_MAX_HOSTNAME];
pj_bool_t has_addr = PJ_FALSE;
unsigned i;
#if defined(PJ_GETADDRINFO_USE_CFHOST) && PJ_GETADDRINFO_USE_CFHOST!=0
CFStringRef hostname;
CFHostRef hostRef;
pj_status_t status = PJ_SUCCESS;
#else
int rc;
struct addrinfo hint, *res, *orig_res;
#endif
PJ_ASSERT_RETURN(nodename && count && *count && ai, PJ_EINVAL);
PJ_ASSERT_RETURN(nodename->ptr && nodename->slen, PJ_EINVAL);
PJ_ASSERT_RETURN(af==PJ_AF_INET || af==PJ_AF_INET6 ||
af==PJ_AF_UNSPEC, PJ_EINVAL);
/* Check if nodename is IP address */
pj_bzero(&ai[0], sizeof(ai[0]));
if ((af==PJ_AF_INET || af==PJ_AF_UNSPEC) &&
pj_inet_pton(PJ_AF_INET, nodename,
&ai[0].ai_addr.ipv4.sin_addr) == PJ_SUCCESS)
{
af = PJ_AF_INET;
has_addr = PJ_TRUE;
} else if ((af==PJ_AF_INET6 || af==PJ_AF_UNSPEC) &&
pj_inet_pton(PJ_AF_INET6, nodename,
&ai[0].ai_addr.ipv6.sin6_addr) == PJ_SUCCESS)
{
af = PJ_AF_INET6;
has_addr = PJ_TRUE;
}
if (has_addr) {
pj_str_t tmp;
tmp.ptr = ai[0].ai_canonname;
pj_strncpy_with_null(&tmp, nodename, PJ_MAX_HOSTNAME);
ai[0].ai_addr.addr.sa_family = (pj_uint16_t)af;
*count = 1;
return PJ_SUCCESS;
}
/* Copy node name to null terminated string. */
if (nodename->slen >= PJ_MAX_HOSTNAME)
return PJ_ENAMETOOLONG;
pj_memcpy(nodecopy, nodename->ptr, nodename->slen);
nodecopy[nodename->slen] = '\0';
#if defined(PJ_GETADDRINFO_USE_CFHOST) && PJ_GETADDRINFO_USE_CFHOST!=0
hostname = CFStringCreateWithCStringNoCopy(kCFAllocatorDefault, nodecopy,
kCFStringEncodingASCII,
kCFAllocatorNull);
hostRef = CFHostCreateWithName(kCFAllocatorDefault, hostname);
if (CFHostStartInfoResolution(hostRef, kCFHostAddresses, nil)) {
CFArrayRef addrRef = CFHostGetAddressing(hostRef, nil);
i = 0;
if (addrRef != nil) {
CFIndex idx, naddr;
naddr = CFArrayGetCount(addrRef);
for (idx = 0; idx < naddr && i < *count; idx++) {
struct sockaddr *addr;
addr = (struct sockaddr *)
CFDataGetBytePtr(CFArrayGetValueAtIndex(addrRef, idx));
/* This should not happen. */
pj_assert(addr);
/* Ignore unwanted address families */
if (af!=PJ_AF_UNSPEC && addr->sa_family != af)
continue;
/* Store canonical name */
pj_ansi_strcpy(ai[i].ai_canonname, nodecopy);
/* Store address */
PJ_ASSERT_ON_FAIL(sizeof(*addr) <= sizeof(pj_sockaddr),
continue);
pj_memcpy(&ai[i].ai_addr, addr, sizeof(*addr));
PJ_SOCKADDR_RESET_LEN(&ai[i].ai_addr);
i++;
}
}
*count = i;
} else {
/*
* pjsip_udp_transport_attach()
*
* Attach UDP socket and start transport.
*/
static pj_status_t transport_attach( pjsip_endpoint *endpt,
pjsip_transport_type_e type,
pj_sock_t sock,
const pjsip_host_port *a_name,
unsigned async_cnt,
pjsip_transport **p_transport)
{
pj_pool_t *pool;
struct udp_transport *tp;
const char *format, *ipv6_quoteb = "", *ipv6_quotee = "";
unsigned i;
pj_status_t status;
PJ_ASSERT_RETURN(endpt && sock!=PJ_INVALID_SOCKET && a_name && async_cnt>0,
PJ_EINVAL);
/* Object name. */
if (type & PJSIP_TRANSPORT_IPV6) {
pj_in6_addr dummy6;
format = "udpv6%p";
/* We don't need to add quote if the transport type is IPv6, but
* actually translated to IPv4.
*/
if (pj_inet_pton(pj_AF_INET6(), &a_name->host, &dummy6)==PJ_SUCCESS) {
ipv6_quoteb = "[";
ipv6_quotee = "]";
}
} else {
format = "udp%p";
}
/* Create pool. */
pool = pjsip_endpt_create_pool(endpt, format, PJSIP_POOL_LEN_TRANSPORT,
PJSIP_POOL_INC_TRANSPORT);
if (!pool)
return PJ_ENOMEM;
/* Create the UDP transport object. */
tp = PJ_POOL_ZALLOC_T(pool, struct udp_transport);
/* Save pool. */
tp->base.pool = pool;
pj_memcpy(tp->base.obj_name, pool->obj_name, PJ_MAX_OBJ_NAME);
/* Init reference counter. */
status = pj_atomic_create(pool, 0, &tp->base.ref_cnt);
if (status != PJ_SUCCESS)
goto on_error;
/* Init lock. */
status = pj_lock_create_recursive_mutex(pool, pool->obj_name,
&tp->base.lock);
if (status != PJ_SUCCESS)
goto on_error;
/* Set type. */
tp->base.key.type = type;
/* Remote address is left zero (except the family) */
tp->base.key.rem_addr.addr.sa_family = (pj_uint16_t)
((type & PJSIP_TRANSPORT_IPV6) ? pj_AF_INET6() : pj_AF_INET());
/* Type name. */
tp->base.type_name = "UDP";
/* Transport flag */
tp->base.flag = pjsip_transport_get_flag_from_type(type);
/* Length of addressess. */
tp->base.addr_len = sizeof(tp->base.local_addr);
/* Init local address. */
status = pj_sock_getsockname(sock, &tp->base.local_addr,
&tp->base.addr_len);
if (status != PJ_SUCCESS)
goto on_error;
/* Init remote name. */
if (type == PJSIP_TRANSPORT_UDP)
tp->base.remote_name.host = pj_str("0.0.0.0");
else
tp->base.remote_name.host = pj_str("::0");
tp->base.remote_name.port = 0;
/* Init direction */
tp->base.dir = PJSIP_TP_DIR_NONE;
/* Set endpoint. */
tp->base.endpt = endpt;
/* Transport manager and timer will be initialized by tpmgr */
/* Attach socket and assign name. */
udp_set_socket(tp, sock, a_name);
/* Register to ioqueue */
status = register_to_ioqueue(tp);
if (status != PJ_SUCCESS)
goto on_error;
/* Set functions. */
tp->base.send_msg = &udp_send_msg;
tp->base.do_shutdown = &udp_shutdown;
tp->base.destroy = &udp_destroy;
/* This is a permanent transport, so we initialize the ref count
* to one so that transport manager don't destroy this transport
* when there's no user!
*/
pj_atomic_inc(tp->base.ref_cnt);
/* Register to transport manager. */
tp->base.tpmgr = pjsip_endpt_get_tpmgr(endpt);
status = pjsip_transport_register( tp->base.tpmgr, (pjsip_transport*)tp);
if (status != PJ_SUCCESS)
goto on_error;
/* Create rdata and put it in the array. */
tp->rdata_cnt = 0;
tp->rdata = (pjsip_rx_data**)
pj_pool_calloc(tp->base.pool, async_cnt,
sizeof(pjsip_rx_data*));
for (i=0; i<async_cnt; ++i) {
pj_pool_t *rdata_pool = pjsip_endpt_create_pool(endpt, "rtd%p",
PJSIP_POOL_RDATA_LEN,
PJSIP_POOL_RDATA_INC);
if (!rdata_pool) {
pj_atomic_set(tp->base.ref_cnt, 0);
pjsip_transport_destroy(&tp->base);
return PJ_ENOMEM;
}
init_rdata(tp, i, rdata_pool, NULL);
tp->rdata_cnt++;
}
/* Start reading the ioqueue. */
status = start_async_read(tp);
if (status != PJ_SUCCESS) {
pjsip_transport_destroy(&tp->base);
return status;
}
/* Done. */
if (p_transport)
*p_transport = &tp->base;
PJ_LOG(4,(tp->base.obj_name,
"SIP %s started, published address is %s%.*s%s:%d",
pjsip_transport_get_type_desc((pjsip_transport_type_e)tp->base.key.type),
ipv6_quoteb,
(int)tp->base.local_name.host.slen,
tp->base.local_name.host.ptr,
ipv6_quotee,
tp->base.local_name.port));
return PJ_SUCCESS;
on_error:
udp_destroy((pjsip_transport*)tp);
return status;
}
/*
* This is the main function for performing server resolution.
*/
PJ_DEF(void) pjsip_resolve( pjsip_resolver_t *resolver,
pj_pool_t *pool,
const pjsip_host_info *target,
void *token,
pjsip_resolver_callback *cb)
{
pjsip_server_addresses svr_addr;
pj_status_t status = PJ_SUCCESS;
int ip_addr_ver;
struct query *query;
pjsip_transport_type_e type = target->type;
int af = pj_AF_UNSPEC();
/* If an external implementation has been provided use it instead */
if (resolver->ext_res) {
(*resolver->ext_res->resolve)(resolver, pool, target, token, cb);
return;
}
/* Is it IP address or hostname? And if it's an IP, which version? */
ip_addr_ver = get_ip_addr_ver(&target->addr.host);
/* Initialize address family type. Unfortunately, target type doesn't
* really tell the address family type, except when IPv6 flag is
* explicitly set.
*/
#if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6==1
if ((ip_addr_ver == 6) || (type & PJSIP_TRANSPORT_IPV6))
af = pj_AF_INET6();
else if (ip_addr_ver == 4)
af = pj_AF_INET();
#else
/* IPv6 is disabled, will resolving IPv6 address be useful? */
af = pj_AF_INET();
#endif
/* Set the transport type if not explicitly specified.
* RFC 3263 section 4.1 specify rules to set up this.
*/
if (type == PJSIP_TRANSPORT_UNSPECIFIED) {
if (ip_addr_ver || (target->addr.port != 0)) {
#if PJ_HAS_TCP
if (target->flag & PJSIP_TRANSPORT_SECURE)
{
type = PJSIP_TRANSPORT_TLS;
} else if (target->flag & PJSIP_TRANSPORT_RELIABLE)
{
type = PJSIP_TRANSPORT_TCP;
} else
#endif
{
type = PJSIP_TRANSPORT_UDP;
}
} else {
/* No type or explicit port is specified, and the address is
* not IP address.
* In this case, full NAPTR resolution must be performed.
* But we don't support it (yet).
*/
#if PJ_HAS_TCP
if (target->flag & PJSIP_TRANSPORT_SECURE)
{
type = PJSIP_TRANSPORT_TLS;
} else if (target->flag & PJSIP_TRANSPORT_RELIABLE)
{
type = PJSIP_TRANSPORT_TCP;
} else
#endif
{
type = PJSIP_TRANSPORT_UDP;
}
}
}
/* If target is an IP address, or if resolver is not configured,
* we can just finish the resolution now using pj_gethostbyname()
*/
if (ip_addr_ver || resolver->res == NULL) {
char addr_str[PJ_INET6_ADDRSTRLEN+10];
pj_uint16_t srv_port;
if (ip_addr_ver != 0) {
/* Target is an IP address, no need to resolve */
if (ip_addr_ver == 4) {
pj_sockaddr_init(pj_AF_INET(), &svr_addr.entry[0].addr,
NULL, 0);
pj_inet_pton(pj_AF_INET(), &target->addr.host,
&svr_addr.entry[0].addr.ipv4.sin_addr);
} else {
pj_sockaddr_init(pj_AF_INET6(), &svr_addr.entry[0].addr,
NULL, 0);
pj_inet_pton(pj_AF_INET6(), &target->addr.host,
&svr_addr.entry[0].addr.ipv6.sin6_addr);
}
} else {
pj_addrinfo ai;
unsigned count;
PJ_LOG(5,(THIS_FILE,
"DNS resolver not available, target '%.*s:%d' type=%s "
"will be resolved with getaddrinfo()",
target->addr.host.slen,
target->addr.host.ptr,
target->addr.port,
pjsip_transport_get_type_name(target->type)));
/* Resolve */
count = 1;
status = pj_getaddrinfo(af, &target->addr.host, &count, &ai);
if (status != PJ_SUCCESS) {
/* "Normalize" error to PJ_ERESOLVE. This is a special error
* because it will be translated to SIP status 502 by
* sip_transaction.c
*/
status = PJ_ERESOLVE;
goto on_error;
}
pj_sockaddr_cp(&svr_addr.entry[0].addr, &ai.ai_addr);
if (af == pj_AF_UNSPEC())
af = ai.ai_addr.addr.sa_family;
}
/* After address resolution, update IPv6 bitflag in transport type. */
if (af == pj_AF_INET6())
type |= PJSIP_TRANSPORT_IPV6;
/* Set the port number */
if (target->addr.port == 0) {
srv_port = (pj_uint16_t)
pjsip_transport_get_default_port_for_type(type);
} else {
srv_port = (pj_uint16_t)target->addr.port;
}
pj_sockaddr_set_port(&svr_addr.entry[0].addr, srv_port);
/* Call the callback. */
PJ_LOG(5,(THIS_FILE,
"Target '%.*s:%d' type=%s resolved to "
"'%s' type=%s (%s)",
(int)target->addr.host.slen,
target->addr.host.ptr,
target->addr.port,
pjsip_transport_get_type_name(target->type),
pj_sockaddr_print(&svr_addr.entry[0].addr, addr_str,
sizeof(addr_str), 3),
pjsip_transport_get_type_name(type),
pjsip_transport_get_type_desc(type)));
svr_addr.count = 1;
svr_addr.entry[0].priority = 0;
svr_addr.entry[0].weight = 0;
svr_addr.entry[0].type = type;
svr_addr.entry[0].addr_len =
pj_sockaddr_get_len(&svr_addr.entry[0].addr);
(*cb)(status, token, &svr_addr);
/* Done. */
return;
}
/* Target is not an IP address so we need to resolve it. */
#if PJSIP_HAS_RESOLVER
/* Build the query state */
query = PJ_POOL_ZALLOC_T(pool, struct query);
query->objname = THIS_FILE;
query->token = token;
query->cb = cb;
query->req.target = *target;
pj_strdup(pool, &query->req.target.addr.host, &target->addr.host);
/* If port is not specified, start with SRV resolution
* (should be with NAPTR, but we'll do that later)
*/
PJ_TODO(SUPPORT_DNS_NAPTR);
/* Build dummy NAPTR entry */
query->naptr_cnt = 1;
pj_bzero(&query->naptr[0], sizeof(query->naptr[0]));
query->naptr[0].order = 0;
query->naptr[0].pref = 0;
query->naptr[0].type = type;
pj_strdup(pool, &query->naptr[0].name, &target->addr.host);
/* Start DNS SRV or A resolution, depending on whether port is specified */
if (target->addr.port == 0) {
query->query_type = PJ_DNS_TYPE_SRV;
query->req.def_port = 5060;
if (type == PJSIP_TRANSPORT_TLS || type == PJSIP_TRANSPORT_TLS6) {
query->naptr[0].res_type = pj_str("_sips._tcp.");
query->req.def_port = 5061;
} else if (type == PJSIP_TRANSPORT_TCP || type == PJSIP_TRANSPORT_TCP6)
query->naptr[0].res_type = pj_str("_sip._tcp.");
else if (type == PJSIP_TRANSPORT_UDP || type == PJSIP_TRANSPORT_UDP6)
query->naptr[0].res_type = pj_str("_sip._udp.");
else {
pj_assert(!"Unknown transport type");
query->naptr[0].res_type = pj_str("_sip._udp.");
}
} else {
/* Otherwise if port is specified, start with A (or AAAA) host
* resolution
*/
query->query_type = PJ_DNS_TYPE_A;
query->naptr[0].res_type.slen = 0;
query->req.def_port = target->addr.port;
}
/* Start the asynchronous query */
PJ_LOG(5, (query->objname,
"Starting async DNS %s query: target=%.*s%.*s, transport=%s, "
"port=%d",
pj_dns_get_type_name(query->query_type),
(int)query->naptr[0].res_type.slen,
query->naptr[0].res_type.ptr,
(int)query->naptr[0].name.slen, query->naptr[0].name.ptr,
pjsip_transport_get_type_name(target->type),
target->addr.port));
if (query->query_type == PJ_DNS_TYPE_SRV) {
int opt = 0;
if (af == pj_AF_UNSPEC())
opt = PJ_DNS_SRV_FALLBACK_A | PJ_DNS_SRV_FALLBACK_AAAA |
PJ_DNS_SRV_RESOLVE_AAAA;
else if (af == pj_AF_INET6())
opt = PJ_DNS_SRV_FALLBACK_AAAA | PJ_DNS_SRV_RESOLVE_AAAA_ONLY;
else /* af == pj_AF_INET() */
opt = PJ_DNS_SRV_FALLBACK_A;
status = pj_dns_srv_resolve(&query->naptr[0].name,
&query->naptr[0].res_type,
query->req.def_port, pool, resolver->res,
opt, query, &srv_resolver_cb, NULL);
} else if (query->query_type == PJ_DNS_TYPE_A) {
/* Resolve DNS A record if address family is not fixed to IPv6 */
if (af != pj_AF_INET6()) {
/* If there will be DNS AAAA query too, let's setup a dummy one
* here, otherwise app callback may be called immediately (before
* DNS AAAA query is sent) when DNS A record is available in the
* cache.
*/
if (af == pj_AF_UNSPEC())
query->object6 = (pj_dns_async_query*)0x1;
status = pj_dns_resolver_start_query(resolver->res,
&query->naptr[0].name,
PJ_DNS_TYPE_A, 0,
&dns_a_callback,
query, &query->object);
}
/* Resolve DNS AAAA record if address family is not fixed to IPv4 */
if (af != pj_AF_INET() && status == PJ_SUCCESS) {
status = pj_dns_resolver_start_query(resolver->res,
&query->naptr[0].name,
PJ_DNS_TYPE_AAAA, 0,
&dns_aaaa_callback,
query, &query->object6);
}
} else {
pj_assert(!"Unexpected");
status = PJ_EBUG;
}
if (status != PJ_SUCCESS)
goto on_error;
return;
#else /* PJSIP_HAS_RESOLVER */
PJ_UNUSED_ARG(pool);
PJ_UNUSED_ARG(query);
PJ_UNUSED_ARG(srv_name);
#endif /* PJSIP_HAS_RESOLVER */
on_error:
if (status != PJ_SUCCESS) {
char errmsg[PJ_ERR_MSG_SIZE];
PJ_LOG(4,(THIS_FILE, "Failed to resolve '%.*s'. Err=%d (%s)",
(int)target->addr.host.slen,
target->addr.host.ptr,
status,
pj_strerror(status,errmsg,sizeof(errmsg)).ptr));
(*cb)(status, token, NULL);
return;
}
}
static int format_test(void)
{
pj_str_t s = pj_str(ADDRESS);
unsigned char *p;
pj_in_addr addr;
char zero[64];
pj_sockaddr_in addr2;
const pj_str_t *hostname;
const unsigned char A[] = {127, 0, 0, 1};
PJ_LOG(3,("test", "...format_test()"));
/* pj_inet_aton() */
if (pj_inet_aton(&s, &addr) != 1)
return -10;
/* Check the result. */
p = (unsigned char*)&addr;
if (p[0]!=A[0] || p[1]!=A[1] || p[2]!=A[2] || p[3]!=A[3]) {
PJ_LOG(3,("test", " error: mismatched address. p0=%d, p1=%d, "
"p2=%d, p3=%d", p[0] & 0xFF, p[1] & 0xFF,
p[2] & 0xFF, p[3] & 0xFF));
return -15;
}
/* pj_inet_ntoa() */
p = (unsigned char*) pj_inet_ntoa(addr);
if (!p)
return -20;
if (pj_strcmp2(&s, (char*)p) != 0)
return -22;
#if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0
/* pj_inet_pton() */
/* pj_inet_ntop() */
{
const pj_str_t s_ipv4 = pj_str("127.0.0.1");
const pj_str_t s_ipv6 = pj_str("fe80::2ff:83ff:fe7c:8b42");
char buf_ipv4[PJ_INET_ADDRSTRLEN];
char buf_ipv6[PJ_INET6_ADDRSTRLEN];
pj_in_addr ipv4;
pj_in6_addr ipv6;
if (pj_inet_pton(pj_AF_INET(), &s_ipv4, &ipv4) != PJ_SUCCESS)
return -24;
p = (unsigned char*)&ipv4;
if (p[0]!=A[0] || p[1]!=A[1] || p[2]!=A[2] || p[3]!=A[3]) {
return -25;
}
if (pj_inet_pton(pj_AF_INET6(), &s_ipv6, &ipv6) != PJ_SUCCESS)
return -26;
p = (unsigned char*)&ipv6;
if (p[0] != 0xfe || p[1] != 0x80 || p[2] != 0 || p[3] != 0 ||
p[4] != 0 || p[5] != 0 || p[6] != 0 || p[7] != 0 ||
p[8] != 0x02 || p[9] != 0xff || p[10] != 0x83 || p[11] != 0xff ||
p[12]!=0xfe || p[13]!=0x7c || p[14] != 0x8b || p[15]!=0x42)
{
return -27;
}
if (pj_inet_ntop(pj_AF_INET(), &ipv4, buf_ipv4, sizeof(buf_ipv4)) != PJ_SUCCESS)
return -28;
if (pj_stricmp2(&s_ipv4, buf_ipv4) != 0)
return -29;
if (pj_inet_ntop(pj_AF_INET6(), &ipv6, buf_ipv6, sizeof(buf_ipv6)) != PJ_SUCCESS)
return -30;
if (pj_stricmp2(&s_ipv6, buf_ipv6) != 0)
return -31;
}
#endif /* PJ_HAS_IPV6 */
/* Test that pj_sockaddr_in_init() initialize the whole structure,
* including sin_zero.
*/
pj_sockaddr_in_init(&addr2, 0, 1000);
pj_bzero(zero, sizeof(zero));
if (pj_memcmp(addr2.sin_zero, zero, sizeof(addr2.sin_zero)) != 0)
return -35;
/* pj_gethostname() */
hostname = pj_gethostname();
if (!hostname || !hostname->ptr || !hostname->slen)
return -40;
PJ_LOG(3,("test", "....hostname is %.*s",
(int)hostname->slen, hostname->ptr));
/* pj_gethostaddr() */
return 0;
}
/**
* Set the server or domain name of the server.
*/
PJ_DEF(pj_status_t) pj_tcp_session_set_server( pj_tcp_session *sess,
const pj_str_t *domain,
int default_port,
pj_dns_resolver *resolver)
{
pj_sockaddr tmp_addr;
pj_bool_t is_ip_addr;
pj_status_t status;
PJ_ASSERT_RETURN(sess && domain, PJ_EINVAL);
PJ_ASSERT_RETURN(sess->state == PJ_TCP_STATE_NULL, PJ_EINVALIDOP);
pj_lock_acquire(sess->lock);
/* See if "domain" contains just IP address */
tmp_addr.addr.sa_family = sess->af;
status = pj_inet_pton(sess->af, domain,
pj_sockaddr_get_addr(&tmp_addr));
is_ip_addr = (status == PJ_SUCCESS);
if (!is_ip_addr && resolver) {
/* Resolve with DNS SRV resolution, and fallback to DNS A resolution
* if default_port is specified.
*/
unsigned opt = 0;
pj_str_t res_name;
res_name = pj_str("_tcps._tcp.");
/* Fallback to DNS A only if default port is specified */
if (default_port>0 && default_port<65536) {
opt = PJ_DNS_SRV_FALLBACK_A;
sess->default_port = (pj_uint16_t)default_port;
}
PJ_LOG(5,(sess->obj_name, "Resolving %.*s%.*s with DNS SRV",
(int)res_name.slen, res_name.ptr,
(int)domain->slen, domain->ptr));
pj_tcp_session_set_state(sess, PJ_TCP_STATE_RESOLVING);
/* User may have destroyed us in the callback */
if (sess->state != PJ_TCP_STATE_RESOLVING) {
status = PJ_ECANCELLED;
goto on_return;
}
status = pj_dns_srv_resolve(domain, &res_name, default_port,
sess->pool, resolver, opt, sess,
&dns_srv_resolver_cb, &sess->dns_async);
if (status != PJ_SUCCESS) {
pj_tcp_session_set_state(sess, PJ_TCP_STATE_NULL);
goto on_return;
}
} else {
/* Resolver is not specified, resolve with standard gethostbyname().
* The default_port MUST be specified in this case.
*/
pj_addrinfo *ai;
unsigned i, cnt;
/* Default port must be specified */
PJ_ASSERT_RETURN(default_port>0 && default_port<65536, PJ_EINVAL);
sess->default_port = (pj_uint16_t)default_port;
cnt = PJ_TCP_MAX_DNS_SRV_CNT;
ai = (pj_addrinfo*)
pj_pool_calloc(sess->pool, cnt, sizeof(pj_addrinfo));
PJ_LOG(5,(sess->obj_name, "Resolving %.*s with DNS A",
(int)domain->slen, domain->ptr));
pj_tcp_session_set_state(sess, PJ_TCP_STATE_RESOLVING);
/* User may have destroyed us in the callback */
if (sess->state != PJ_TCP_STATE_RESOLVING) {
status = PJ_ECANCELLED;
goto on_return;
}
status = pj_getaddrinfo(sess->af, domain, &cnt, ai);
if (status != PJ_SUCCESS)
goto on_return;
sess->srv_addr_cnt = (pj_uint16_t)cnt;
sess->srv_addr_list = (pj_sockaddr*)
pj_pool_calloc(sess->pool, cnt,
sizeof(pj_sockaddr));
for (i=0; i<cnt; ++i) {
pj_sockaddr *addr = &sess->srv_addr_list[i];
pj_memcpy(addr, &ai[i].ai_addr, sizeof(pj_sockaddr));
addr->addr.sa_family = sess->af;
addr->ipv4.sin_port = pj_htons(sess->default_port);
}
sess->srv_addr = &sess->srv_addr_list[0];
pj_tcp_session_set_state(sess, PJ_TCP_STATE_RESOLVED);
}
on_return:
pj_lock_release(sess->lock);
return status;
}