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/*
* Copyright (c) 1999-2003 Smithsonian Astrophysical Observatory
*/
/*
*
* remote.c -- xpa access control list management
*
*/
#include <xpap.h>
/*
*----------------------------------------------------------------------------
*
*
* Private Routines
*
*
*----------------------------------------------------------------------------
*/
/*
*----------------------------------------------------------------------------
*
*
* Semi-Public Routines (used by command.c)
*
*
*----------------------------------------------------------------------------
*/
/*
*----------------------------------------------------------------------------
*
* Routine: XPAReceiveRemote
*
* Purpose: establish remote connection with specified acls
*
* Returns: xpa callback error codes
*
*----------------------------------------------------------------------------
*/
#ifdef ANSI_FUNC
int
XPAReceiveRemote (void *client_data, void *call_data, char *paramlist,
char *buf, size_t len)
#else
int XPAReceiveRemote(client_data, call_data, paramlist, buf, len)
void *client_data;
void *call_data;
char *paramlist;
char *buf;
size_t len;
#endif
{
XPA xpa = (XPA)call_data;
XPA cxpa;
char *mode=NULL;
char host[SZ_LINE];
char acl[SZ_LINE];
char which[SZ_LINE];
char tbuf[SZ_LINE];
int lp=0;
/* make sure we are using inet sockets */
if( XPAMtype() != XPA_INET ){
snprintf(tbuf, SZ_LINE, "remote requires that XPA_METHOD be 'inet'\n");
XPAError(xpa, tbuf);
return(-1);
}
/* see if we are connecting to a particular host */
if( paramlist && *paramlist ){
cxpa = xpa;
/* arg1: host */
if( !word(paramlist, host, &lp) ){
goto error;
}
/* arg2: acl (optional) or -proxy */
if( !word(paramlist, acl, &lp) ){
strcpy(acl, "+");
}
/* arg3: -proxy to set up proxy processing
or acl (if other word was -proxy) */
else{
if( !strcmp(acl, "-proxy") ){
mode="proxy=true";
if( !word(paramlist, acl, &lp) ){
strcpy(acl, "+");
}
}
else if( word(paramlist, which, &lp) ){
if( !strcmp(which, "-proxy") ){
mode="proxy=true";
}
else{
goto error;
}
}
}
/* make the call */
if( XPARemote(cxpa, host, acl, mode) >= 0 ){
return(0);
}
else{
snprintf(tbuf, SZ_LINE, "remote xpans %s failed to process %s\n",
host, xpa->name);
XPAError(xpa, tbuf);
return(-1);
}
}
else{
goto error;
}
error:
XPAError(xpa, "syntax error: -remote hostname:port [acl] [-proxy]\n");
return(-1);
}
/*
*----------------------------------------------------------------------------
*
* Routine: XPASendRemote
*
* Purpose: return the list of remotes for this access point
*
* Returns: 0 for success, -1 for failure
*
*----------------------------------------------------------------------------
*/
#ifdef ANSI_FUNC
int
XPASendRemote (void *client_data, void *call_data, char *paramlist,
char **buf, size_t *len)
#else
int XPASendRemote(client_data, call_data, paramlist, buf, len)
void *client_data;
void *call_data;
char *paramlist;
char **buf;
size_t *len;
#endif
{
XPA xpa = (XPA)call_data;
NS ns;
int got = 0;
char tbuf[SZ_LINE];
/* list out the remotes */
for(ns=xpa->nshead; ns!=NULL; ns=ns->next){
/* skip default ns */
if( ns->host == NULL ) continue;
snprintf(tbuf, SZ_LINE, "%s %x:%d\n", ns->host, ns->ip, ns->port);
send(xpa_datafd(xpa), tbuf, strlen(tbuf), 0);
got++;
}
if( got == 0 ){
send(xpa_datafd(xpa), "\n", 1, 0);
}
return(0);
}
/*
*----------------------------------------------------------------------------
*
* Routine: XPARemote
*
* Purpose: register the specified XPA (or all XPAs) with the named remote
* name server using the specified acl
*
* Returns: none
*
*----------------------------------------------------------------------------
*/
#ifdef ANSI_FUNC
int
XPARemote (XPA xpa, char *host, char *acl, char *mode)
#else
int XPARemote(xpa, host, acl, mode)
XPA xpa;
char *host;
char *acl;
char *mode;
#endif
{
int got=0;
char remote[SZ_LINE];
char mach[SZ_LINE];
char lbuf[SZ_LINE];
char *ind;
XPA cur;
/* might have to add the "port" to the host to get remote */
strncpy(remote, host, SZ_LINE-1);
remote[SZ_LINE-1] = '\0';
if( (ind=strchr(remote, ':')) == NULL ){
strcat(remote, ":$port");
}
/* if no acl is specified, make it '+' */
if( (acl == NULL) || (*acl == '\0') ){
acl = "+";
}
/* get machine name by removing port suffix */
strcpy(mach, remote);
if( (ind=strchr(mach, ':')) != NULL ){
*ind = '\0';
}
else{
return(-1);
}
/* either process the specified xpa, or do all of them */
if( xpa ){
cur = xpa;
/* acl="-" => delete, else add */
if( strcmp(acl, "-") ){
got=XPANSAdd(cur, remote, mode);
}
else{
got=XPANSDel(cur, remote, mode);
}
switch(got){
/* error condition */
case -1:
return(-1);
/* OK */
case 0:
snprintf(lbuf, SZ_LINE, "%s:%s %s %s",
cur->xclass, cur->name, mach, acl);
XPAAclEdit(lbuf);
break;
/* entry already exists (OK) */
case 1:
break;
}
}
else{
for(cur=XPAListHead(); cur!=NULL; cur=cur->next){
/* acl="-" => delete, else add */
if( strcmp(acl, "-") ){
got=XPANSAdd(cur, remote, mode);
}
else{
got=XPANSDel(cur, remote, mode);
}
switch(got){
/* error condition */
case -1:
return(-1);
/* OK */
case 0:
snprintf(lbuf, SZ_LINE, "%s:%s %s %s",
cur->xclass, cur->name, mach, acl);
XPAAclEdit(lbuf);
break;
/* entry already exists (OK) */
case 1:
break;
}
}
}
/* return OK */
return(0);
}
/*
*----------------------------------------------------------------------------
*
*
* Public Routines
*
*
*----------------------------------------------------------------------------
*/
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