NSAPI_PUBLIC char *util_hostname(void)
{
char str[MAXHOSTNAMELEN];
PRHostEnt *p;
PRHostEnt hent;
char buf[PR_AR_MAXHOSTENTBUF];
PRInt32 err;
gethostname(str, MAXHOSTNAMELEN);
#ifdef NS_OLDES3X
p = PR_AR_GetHostByName(
str,
&hent,
buf,
PR_AR_MAXHOSTENTBUF,
&err,
PR_AR_DEFAULT_TIMEOUT,
AF_INET);
if (p == NULL)
return NULL;
return net_find_fqdn(p);
#else
err = PR_AR_GetHostByName(str, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT, AF_INET);
if (err != PR_AR_OK)
return NULL;
return net_find_fqdn(&hent);
#endif /* NS_OLDES3X */
}
NSAPI_PUBLIC char *util_hostname(void)
{
char str[MAXHOSTNAMELEN];
PRHostEnt hent;
char buf[PR_NETDB_BUF_SIZE];
PRStatus err;
gethostname(str, MAXHOSTNAMELEN);
err = PR_GetHostByName(
str,
buf,
PR_NETDB_BUF_SIZE,
&hent);
if (err == PR_FAILURE)
return NULL;
return net_find_fqdn(&hent);
}
char *dns_ip2host(char *ip, int verify)
{
PRNetAddr iaddr;
PRHostEnt* hptr = NULL;
char* hn = NULL;
unsigned long laddr = 0;
char myhostname[256];
PRHostEnt hent;
char buf[PR_AR_MAXHOSTENTBUF];
PRInt32 err = 0;
if (PR_StringToNetAddr(ip, &iaddr) == PR_FAILURE)
goto bong;
/*
* See if it happens to be the localhost IP address, and try
* the local host name if so.
*/
if (laddr == 0)
{
laddr = inet_addr("127.0.0.1");
myhostname[0] = 0;
gethostname(myhostname, sizeof(myhostname));
}
/* Have to match the localhost IP address and have a hostname */
if (((unsigned long)iaddr.inet.ip == laddr) && (myhostname[0] != 0))
{
/*
* Now try for a fully-qualified domain name, starting with
* the local hostname.
*/
if (PR_AR_GetHostByName(myhostname, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT, AF_INET) == PR_AR_OK)
{
hptr = &hent;
}
else
{
hptr = 0;
}
/* Don't verify if we get a fully-qualified name this way */
verify = 0;
}
else {
if (PR_AR_GetHostByAddr(&iaddr, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT) == PR_AR_OK)
{
hptr = &hent;
}
else
{
hptr = 0;
}
}
if ((!hptr) || !(hn = net_find_fqdn(hptr)))
goto bong;
if(verify)
{
char **haddr = 0;
if (PR_AR_GetHostByName(hn, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT, AF_INET) == PR_AR_OK)
{
hptr = &hent;
}
else
{
hptr = 0;
}
if(hptr)
{
for(haddr = hptr->h_addr_list; *haddr; haddr++)
{
if(((struct in_addr *)(*haddr))->s_addr == (unsigned long)iaddr.inet.ip)
break;
}
}
if((!hptr) || (!(*haddr)))
goto bong;
}
return hn;
bong:
return NULL;
}
char *dns_ip2host(const char *ip, int verify)
{
PRNetAddr iaddr;
PRHostEnt *hptr;
char *hn;
#ifdef DNS_CACHE
dns_cache_entry_t *dns_entry;
#endif
unsigned long laddr = 0;
char myhostname[256];
PRHostEnt hent;
char buf[PR_AR_MAXHOSTENTBUF];
PRInt32 err;
if (PR_StringToNetAddr(ip, &iaddr) == PR_FAILURE)
goto bong;
#ifdef DNS_CACHE
if ( (dns_entry = dns_cache_lookup_ip((unsigned int)iaddr.inet.ip)) )
{
hn = NULL;
if ( dns_entry->host &&
/* Only use entry if the cache entry has been verified or if
* verify is off...
*/
(dns_entry->verified || !verify) ) {
hn = STRDUP( dns_entry->host );
(void)dns_cache_use_decrement(dns_entry);
return hn;
}
dns_cache_delete(dns_entry);
dns_entry = 0;
}
#endif
/*
* See if it happens to be the localhost IP address, and try
* the local host name if so.
*/
if (laddr == 0) {
laddr = inet_addr("127.0.0.1");
myhostname[0] = 0;
gethostname(myhostname, sizeof(myhostname));
}
/* Have to match the localhost IP address and have a hostname */
if (((unsigned long)iaddr.inet.ip == laddr) && (myhostname[0] != 0))
{
/*
* Now try for a fully-qualified domain name, starting with
* the local hostname.
*/
if (PR_AR_GetHostByName(myhostname, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT, AF_INET) == PR_AR_OK) {
hptr = &hent;
}
else {
hptr = 0;
}
/* Don't verify if we get a fully-qualified name this way */
verify = 0;
}
else {
if (PR_AR_GetHostByAddr(&iaddr, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT) == PR_AR_OK) {
hptr = &hent;
}
else {
hptr = 0;
}
}
if ((!hptr) || !(hn = net_find_fqdn(hptr))) goto bong;
if(verify) {
char **haddr = 0;
if (PR_AR_GetHostByName(hn, buf, PR_AR_MAXHOSTENTBUF,
&hent, PR_AR_DEFAULT_TIMEOUT, AF_INET) == PR_AR_OK) {
hptr = &hent;
}
else {
hptr = 0;
}
if(hptr) {
for(haddr = hptr->h_addr_list; *haddr; haddr++) {
if(((struct in_addr *)(*haddr))->s_addr == (unsigned long)iaddr.inet.ip)
break;
}
}
if((!hptr) || (!(*haddr)))
goto bong;
}
#ifdef DNS_CACHE
if ( (dns_entry = dns_cache_insert(hn, (unsigned int)iaddr.inet.ip, verify)) )
{
(void) dns_cache_use_decrement(dns_entry);
}
#endif /* DNS_CACHE */
return hn;
bong:
#ifdef DNS_CACHE
/* Insert the lookup failure */
if ( (dns_entry = dns_cache_insert(NULL, (unsigned int)iaddr.inet.ip, verify)) )
{
(void) dns_cache_use_decrement(dns_entry);
}
#endif /* DNS_CACHE */
return NULL;
}
char *dns_ip2host(char *ip, int verify)
{
/* struct in_addr iaddr; */
PRNetAddr iaddr;
char *hn;
static unsigned long laddr = 0;
static char myhostname[256];
PRHostEnt hent;
char buf[PR_NETDB_BUF_SIZE];
PRStatus err;
err = PR_InitializeNetAddr(PR_IpAddrNull, 0, &iaddr);
/* richm: ipv6 cleanup - use inet_aton or other more appropriate function
instead of inet_addr */
if((iaddr.inet.ip = inet_addr(ip)) == (in_addr_t)-1)
goto bong;
/*
* See if it happens to be the localhost IP address, and try
* the local host name if so.
*/
if (laddr == 0) {
laddr = inet_addr("127.0.0.1");
myhostname[0] = 0;
PR_GetSystemInfo(PR_SI_HOSTNAME, myhostname, sizeof(myhostname));
}
/* Have to match the localhost IP address and have a hostname */
if ((iaddr.inet.ip == laddr) && (myhostname[0] != 0)) {
/*
* Now try for a fully-qualified domain name, starting with
* the local hostname.
*/
err = PR_GetHostByName(myhostname,
buf,
PR_NETDB_BUF_SIZE,
&hent);
/* Don't verify if we get a fully-qualified name this way */
verify = 0;
}
else {
err = PR_GetHostByAddr(&iaddr,
buf,
PR_NETDB_BUF_SIZE,
&hent);
}
if ((err == PR_FAILURE) || !(hn = net_find_fqdn(&hent))) goto bong;
if(verify) {
char **haddr = 0;
err = PR_GetHostByName(hn,
buf,
PR_NETDB_BUF_SIZE,
&hent);
if(err == PR_SUCCESS) {
for(haddr = hent.h_addr_list; *haddr; haddr++) {
if(((struct in_addr *)(*haddr))->s_addr == iaddr.inet.ip)
break;
}
}
if((err == PR_FAILURE) || (!(*haddr)))
goto bong;
}
return hn;
bong:
return NULL;
}
