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#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h> /* For gethostbyname(). */
extern int h_errno;
#include <netinet/in.h>
#include <Y2/Y.h>
#include <Y2/Ylib.h>
#include "../include/string.h"
#ifndef DEF_CON_ARG
# define DEF_CON_ARG "127.0.0.1:9433"
#endif
/*
* Print help.
*/
void PrintUsage()
{
printf("\
Usage: yhost [-] <address> [options]\n\
\n\
Specifying a `-' argument means to remove the <address>.\n\
\n\
<address> is the numeric IP or named address of the host you\n\
want to allow/disallow access to the YIFF server.\n\
This command must be runned on the same physical computer as\n\
the YIFF server is running on.\n\
\n\
[options] can be any of the following:\n\
\n\
--recorder <address:port> Specify which YIFF server to connect to.\n\
\n"
);
return;
}
int main(int argc, char *argv[])
{
int i, status;
char *con_arg = NULL;
int op = 1;
YConnection *con = NULL;
YIPUnion ip;
struct hostent *he;
struct sockaddr_in haddr;
if(argc < 2)
{
PrintUsage();
return(1);
}
/* Parse arguments. */
for(i = 1; i < argc; i++)
{
if(argv[i] == NULL)
continue;
/* Help. */
if(strcasepfx(argv[i], "--h") ||
strcasepfx(argv[i], "-h") ||
!strcmp(argv[i], "?")
)
{
PrintUsage();
return(0);
}
/* Add or remove? */
if(i == 1)
{
if(!strcmp(argv[i], "-"))
{
op = 0; /* We know it's remove, continue. */
continue;
}
else if(!strcmp(argv[i], "+"))
{
op = 1; /* We know it's add, continue. */
continue;
}
else
{
op = 1;
}
}
/* Address. */
if((i == 1) ||
(i == 2)
)
{
/* Parse address. */
he = gethostbyname(argv[i]);
if(he == NULL)
{
switch(h_errno)
{
case NO_ADDRESS:
fprintf(stderr,
"%s: No associated IP address.\n",
argv[i]
);
break;
case NO_RECOVERY:
fprintf(stderr,
"%s: Unrecoverable error.\n",
argv[i]
);
break;
case TRY_AGAIN:
fprintf(stderr,
"%s: Name server unavailable.\n",
argv[i]
);
break;
default:
fprintf(stderr,
"%s: Unknown host.\n",
argv[i]
);
break;
}
free(con_arg);
con_arg = NULL;
return(1);
}
haddr.sin_addr = *((struct in_addr *)he->h_addr);
ip.whole = (u_int32_t)haddr.sin_addr.s_addr;
continue;
}
/* Connect address. */
if(strcasepfx(argv[i], "--rec") ||
strcasepfx(argv[i], "-rec")
)
{
i++;
if(i < argc)
{
free(con_arg);
con_arg = StringCopyAlloc(argv[i]);
}
else
{
fprintf(stderr,
"%s: Requires argument.\n",
argv[i - 1]
);
}
}
}
/*
* Connect to YIFF server.
*/
con = YOpenConnection(
NULL, /* No start argument. */
con_arg
);
if(con == NULL)
{
printf("%s: Cannot connect to YIFF server.\n",
(con_arg == NULL) ? DEF_CON_ARG : con_arg
);
free(con_arg);
con_arg = NULL;
return(-1);
}
/*
* Add or remove host.
*/
if(op)
status = YAddHost(con, &ip);
else
status = YRemoveHost(con, &ip);
if(status)
printf("Cannot %s %i.%i.%i.%i.\n",
(op == 0) ? "remove" : "add",
ip.charaddr[0],
ip.charaddr[1],
ip.charaddr[2],
ip.charaddr[3]
);
else
printf("%s %i.%i.%i.%i %s host access list.\n",
((op == 0) ? "Removing" : "Adding"),
ip.charaddr[0],
ip.charaddr[1],
ip.charaddr[2],
ip.charaddr[3],
((op == 0) ? "from" : "to")
);
/*
* Disconnect from YIFF server
*/
YCloseConnection(con, False);
con = NULL;
free(con_arg);
con_arg = NULL;
return(0);
}
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