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/*
* Unofficial release 1.3.0
* B I N G
*
*/
/* $Id: bing_misc.c,v 1.5 1999/10/16 07:07:58 fgouget Exp $ */
#include <stdio.h>
#include <string.h>
/* types.h provides u_short on HPUX10 and Solaris */
#include <sys/types.h>
#ifdef WIN32
#include <winsock.h>
#else
#include <netdb.h>
#endif
#include "bing_defs.h"
#include "bing_misc.h"
#ifndef INADDR_NONE
/* This does not seem to be defined on Solaris */
#define INADDR_NONE (u_long)0xffffffff
#endif
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK (u_long)0x7F000001
#endif
#ifdef FAKE_NET
/* (!!) for testing (without a connection) */
typedef struct {
char* name;
char* addr;
} pseudo_hosts;
#define NB_PSEUDO_HOSTS 13
static pseudo_hosts hosts[NB_PSEUDO_HOSTS]={
{"alcatraz","208.199.87.55"},
{"alcatraz.metaintegration.net","208.199.87.55"},
{"host1_1","192.168.1.1"},
{"host1_2","192.168.1.2"},
{"host1_3","192.168.1.3"},
{"host1_4","192.168.1.4"},
{"host1_5","192.168.1.5"},
{"host2_1","192.168.2.1"},
{"host2_2","192.168.2.2"},
{"host2_3","192.168.2.3"},
{"host2_4","192.168.2.4"},
{"host2_5","192.168.2.5"},
{"alcatraz","127.0.0.1"}
};
struct hostent* __gethostbyname(char* hostname)
{
static struct hostent he;
static struct in_addr addr;
static struct in_addr* he_addr[2];
int i;
for (i=0;i<NB_PSEUDO_HOSTS;i++) {
if (strcmp(hosts[i].name,hostname)==0) {
he.h_name=hosts[i].name;
he.h_aliases=NULL;
he.h_addrtype=AF_INET;
he.h_length=1;
addr.S_un.S_addr=inet_addr(hosts[i].addr);
he_addr[0]=&addr;
he_addr[1]=NULL;
he.h_addr_list=(char**)&he_addr;
return &he;
}
}
return NULL;
}
struct hostent* __gethostbyaddr(char* host_addr,int size,int domain)
{
static struct hostent he;
static struct in_addr addr;
static struct in_addr* he_addr[2];
char* ip_str;
int i;
if (domain!=AF_INET)
return NULL;
ip_str=inet_ntoa(*(struct in_addr*)host_addr);
for (i=0;i<NB_PSEUDO_HOSTS;i++) {
if (strcmp(hosts[i].addr,ip_str)==0) {
he.h_name=hosts[i].name;
he.h_aliases=NULL;
he.h_addrtype=AF_INET;
he.h_length=1;
addr.S_un.S_addr=inet_addr(hosts[i].addr);
he_addr[0]=&addr;
he_addr[1]=NULL;
he.h_addr_list=(char**)&he_addr;
return &he;
}
}
return NULL;
}
#define gethostbyname(name) __gethostbyname(name)
#define gethostbyaddr(addr,size,domain) __gethostbyaddr(addr,size,domain)
#endif /* FAKE_NET */
int addrcmp(struct sockaddr* addr1, struct sockaddr* addr2)
{
if (addr1->sa_family!=addr2->sa_family)
return addr1->sa_family-addr2->sa_family;
switch (addr1->sa_family) {
case AF_INET:
return memcmp(&(SOCKADDR_IN(addr1)->sin_addr),
&(SOCKADDR_IN(addr2)->sin_addr),
sizeof(struct in_addr)
);
break;
default:
return memcmp(addr1,addr2,sizeof(struct sockaddr));
}
}
int addrcmp2(struct sockaddr* addr1, unsigned short family, char* addr2)
{
if (addr1->sa_family!=family)
return addr1->sa_family-family;
switch (addr1->sa_family) {
case AF_INET:
return memcmp(&(SOCKADDR_IN(addr1)->sin_addr),
addr2,
sizeof(struct in_addr)
);
break;
default:
return memcmp(addr1,addr2,sizeof(struct sockaddr));
}
}
void addrset(struct sockaddr* sa,struct in_addr ia,unsigned short ip)
{
struct sockaddr_in* sai=(struct sockaddr_in*)sa;
sai->sin_family=PF_INET;
sai->sin_port=ip;
sai->sin_addr=ia;
}
struct hostent* getlocalhost(int domain)
{
struct in_addr addr;
if (domain!=AF_INET)
return NULL;
/* (!!) this seems to be specific to linux, on other platforms it would be addr.S_un.S_addr */
addr.s_addr=INADDR_LOOPBACK;
return gethostbyaddr((char*)&addr,sizeof(addr),AF_INET);
}
int host_name2addr(char* host_string, struct sockaddr* host_addr)
{
unsigned long int addr;
addr=inet_addr(host_string);
if (addr==INADDR_NONE) {
struct hostent *he;
he=gethostbyname(host_string);
if (he==NULL) {
return -1;
} else if (he->h_addrtype!=AF_INET) {
return -1;
} else {
host_addr->sa_family=AF_INET;
/* the port *must* be initialized, even in icmp mode ! */
SOCKADDR_IN(host_addr)->sin_port=0;
memcpy(&SOCKADDR_IN(host_addr)->sin_addr, he->h_addr, sizeof(SOCKADDR_IN(host_addr)->sin_addr));
}
} else {
host_addr->sa_family=AF_INET;
/* the port *must* be initialized, even in icmp mode ! */
SOCKADDR_IN(host_addr)->sin_port=0;
memcpy(&SOCKADDR_IN(host_addr)->sin_addr,&addr,sizeof(SOCKADDR_IN(host_addr)->sin_addr));
}
return 0;
}
char* host_addr2name(struct sockaddr* host_addr, int resolve)
{
static char host_string[15+1+1+64+1+1];
char* ip_str;
switch (host_addr->sa_family) {
case AF_INET:
ip_str=inet_ntoa(SOCKADDR_IN(host_addr)->sin_addr);
if (!resolve) {
strncpy(host_string,ip_str,sizeof(host_string));
} else {
struct hostent *he;
/* (!!) check out how gethostbyaddr works to find a more generic way of doing this */
he=gethostbyaddr((const char*)&(SOCKADDR_IN(host_addr)->sin_addr),4,AF_INET);
if (he!=NULL)
snprintf(snfargs(host_string,sizeof(host_string),"%s/%s"),
he->h_name,ip_str);
else
snprintf(snfargs(host_string,sizeof(host_string),"<unknown>/%s"),
ip_str);
}
host_string[sizeof(host_string)-1]='\0';
return host_string;
default:
return "<unknown address type>";
}
}
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