Finish updating for the latest alias code.

Submitted by:	Charles Mott <cmott@srv.net>
This commit is contained in:
Brian Somers 1997-05-23 05:34:15 +00:00
parent c9bf343a4f
commit f82fd8286c
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=26034
4 changed files with 432 additions and 0 deletions

211
usr.sbin/ppp/alias_cmd.c Normal file
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#include <limits.h>
#include <netdb.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "command.h"
#include "vars.h"
#include "alias.h"
static int
StrToAddr (char *, struct in_addr* addr);
static int
StrToPort (char *, u_short *port, char *proto);
static int
StrToAddrAndPort (char *, struct in_addr *addr, u_short *port, char *proto);
int
AliasRedirectPort (struct cmdtab *list,
int argc,
char **argv,
void *param)
{
if (argc == 3)
{
char proto_constant;
char *proto;
u_short local_port;
u_short alias_port;
int error;
struct in_addr local_addr;
struct in_addr null_addr;
struct alias_link *link;
proto = argv[0];
if (strcmp(proto, "tcp") == 0)
{
proto_constant = IPPROTO_TCP;
}
else if (strcmp(proto, "udp") == 0)
{
proto_constant = IPPROTO_UDP;
}
else
{
printf("port redirect: protocol must be tcp or udp\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
error = StrToAddrAndPort(argv[1], &local_addr, &local_port, proto);
if (error)
{
printf("port redirect: error reading local addr:port\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
error = StrToPort(argv[2], &alias_port, proto);
if (error)
{
printf("port redirect: error reading alias port\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
null_addr.s_addr = 0;
link = PacketAliasRedirectPort(local_addr, local_port,
null_addr, 0,
null_addr, alias_port,
proto_constant);
if (link == NULL)
printf("port redirect: error returned by packed aliasing engine"
"(code=%d)\n", error);
return 1;
}
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
int
AliasRedirectAddr(struct cmdtab *list,
int argc,
char **argv,
void *param)
{
if (argc == 2)
{
int error;
struct in_addr local_addr;
struct in_addr alias_addr;
struct alias_link *link;
error = StrToAddr(argv[0], &local_addr);
if (error)
{
printf("address redirect: invalid local address\n");
return 1;
}
error = StrToAddr(argv[1], &alias_addr);
if (error)
{
printf("address redirect: invalid alias address\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
link = PacketAliasRedirectAddr(local_addr, alias_addr);
if (link == NULL)
{
printf("address redirect: packet aliasing engine error\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
}
return 1;
}
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
static int
StrToAddr (char* str,
struct in_addr* addr)
{
struct hostent* hp;
if (inet_aton (str, addr))
return 0;
hp = gethostbyname (str);
if (!hp)
{
fprintf (stderr, "Unknown host %s.\n", str);
return -1;
}
*addr = *((struct in_addr *) hp->h_addr);
return 0;
}
static int
StrToPort (char *str,
u_short *port,
char *proto)
{
int iport;
struct servent* sp;
char* end;
iport = strtol (str, &end, 10);
if (end != str)
{
*port = htons(iport);
return 0;
}
sp = getservbyname (str, proto);
if (!sp)
{
fprintf (stderr, "Unknown port or service %s/%s.\n",
str, proto);
return -1;
}
*port = sp->s_port;
return 0;
}
int
StrToAddrAndPort (char* str,
struct in_addr* addr,
u_short *port,
char *proto)
{
char *ptr;
ptr = strchr (str, ':');
if (!ptr)
{
fprintf (stderr, "%s is missing port number.\n", str);
return -1;
}
*ptr = '\0';
++ptr;
if (StrToAddr (str, addr) != 0)
return -1;
return StrToPort (ptr, port, proto);
}

5
usr.sbin/ppp/alias_cmd.h Normal file
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extern int
AliasRedirectPort (struct cmdtab *, int, char **, void *);
extern int
AliasRedirectAddr (struct cmdtab *, int, char **, void *);

211
usr.sbin/ppp/nat_cmd.c Normal file
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#include <limits.h>
#include <netdb.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "command.h"
#include "vars.h"
#include "alias.h"
static int
StrToAddr (char *, struct in_addr* addr);
static int
StrToPort (char *, u_short *port, char *proto);
static int
StrToAddrAndPort (char *, struct in_addr *addr, u_short *port, char *proto);
int
AliasRedirectPort (struct cmdtab *list,
int argc,
char **argv,
void *param)
{
if (argc == 3)
{
char proto_constant;
char *proto;
u_short local_port;
u_short alias_port;
int error;
struct in_addr local_addr;
struct in_addr null_addr;
struct alias_link *link;
proto = argv[0];
if (strcmp(proto, "tcp") == 0)
{
proto_constant = IPPROTO_TCP;
}
else if (strcmp(proto, "udp") == 0)
{
proto_constant = IPPROTO_UDP;
}
else
{
printf("port redirect: protocol must be tcp or udp\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
error = StrToAddrAndPort(argv[1], &local_addr, &local_port, proto);
if (error)
{
printf("port redirect: error reading local addr:port\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
error = StrToPort(argv[2], &alias_port, proto);
if (error)
{
printf("port redirect: error reading alias port\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
null_addr.s_addr = 0;
link = PacketAliasRedirectPort(local_addr, local_port,
null_addr, 0,
null_addr, alias_port,
proto_constant);
if (link == NULL)
printf("port redirect: error returned by packed aliasing engine"
"(code=%d)\n", error);
return 1;
}
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
int
AliasRedirectAddr(struct cmdtab *list,
int argc,
char **argv,
void *param)
{
if (argc == 2)
{
int error;
struct in_addr local_addr;
struct in_addr alias_addr;
struct alias_link *link;
error = StrToAddr(argv[0], &local_addr);
if (error)
{
printf("address redirect: invalid local address\n");
return 1;
}
error = StrToAddr(argv[1], &alias_addr);
if (error)
{
printf("address redirect: invalid alias address\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
link = PacketAliasRedirectAddr(local_addr, alias_addr);
if (link == NULL)
{
printf("address redirect: packet aliasing engine error\n");
printf("Usage: alias %s %s\n", list->name, list->syntax);
}
return 1;
}
printf("Usage: alias %s %s\n", list->name, list->syntax);
return 1;
}
static int
StrToAddr (char* str,
struct in_addr* addr)
{
struct hostent* hp;
if (inet_aton (str, addr))
return 0;
hp = gethostbyname (str);
if (!hp)
{
fprintf (stderr, "Unknown host %s.\n", str);
return -1;
}
*addr = *((struct in_addr *) hp->h_addr);
return 0;
}
static int
StrToPort (char *str,
u_short *port,
char *proto)
{
int iport;
struct servent* sp;
char* end;
iport = strtol (str, &end, 10);
if (end != str)
{
*port = htons(iport);
return 0;
}
sp = getservbyname (str, proto);
if (!sp)
{
fprintf (stderr, "Unknown port or service %s/%s.\n",
str, proto);
return -1;
}
*port = sp->s_port;
return 0;
}
int
StrToAddrAndPort (char* str,
struct in_addr* addr,
u_short *port,
char *proto)
{
char *ptr;
ptr = strchr (str, ':');
if (!ptr)
{
fprintf (stderr, "%s is missing port number.\n", str);
return -1;
}
*ptr = '\0';
++ptr;
if (StrToAddr (str, addr) != 0)
return -1;
return StrToPort (ptr, port, proto);
}

5
usr.sbin/ppp/nat_cmd.h Normal file
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extern int
AliasRedirectPort (struct cmdtab *, int, char **, void *);
extern int
AliasRedirectAddr (struct cmdtab *, int, char **, void *);