// /bin/dev/_eval.c
// Part of the TMI distribution mudlib and now part of Dead Souls's
// allows wizards to execute LPC code without writing new objects.
// Created by Douglas Reay (Pallando @ TMI-2, Dead Souls, etc) 92-12-07
#include <privs.h>
#include <lib.h>
inherit LIB_DAEMON;
#define SYNTAX "Syntax: \"eval <lpc commands>\".\n"
int cmd( string a )
{
string file, filename;
mixed err, ret;
string x,y;
if(!member_group(previous_object(), PRIV_SECURE)) {
log_file("adm/eval", query_privs(previous_object())
+" ("+ctime(time())+"): eval "+a+"\n");
}
if( !a ) { notify_fail( SYNTAX ); return 0; }
// The includes in the file arn't necessary (and can be removed if the
// include files on your mud are called something different). They
// just to make things like "eval return children( USER )" possible.
file =
""+
"#include <lib.h>\n"+
"#include <privs.h>\n"+
"#include <cfg.h>\n"+
"#include <save.h>\n"+
"#include <rooms.h>\n"+
"#include <config.h>\n"+
"#include <daemons.h>\n"+
"#include <objects.h>\n"+
"#include <commands.h>\n"+
"#include <armor_types.h>\n"+
"#include <damage_types.h>\n"+
"#include <position.h>\n"+
"inherit LIB_ITEM;\n"+
"mixed eval() { " + a + "; }\n"+
"";
filename = user_path((string)previous_object()->GetKeyName());
if( file_size( filename ) != -2 ) {
notify_fail( "You must have a valid home directory!\n" );
return 0;
}
filename += "CMD_EVAL_TMP_FILE.c";
if(securep(previous_object())) filename = "/secure/tmp/"+previous_object()->GetKeyName()+"_CMD_EVAL_TMP_FILE.c";
rm( filename );
if( ret = find_object( filename ) ) destruct( ret );
write_file( filename, file,1 );
ret = (mixed)call_other(filename, "eval");
write( wrap( "Result = " + identify( ret ) ) );
if( ret = find_object( filename ) ) destruct( ret );
return 1;
}
int help()
{
write( SYNTAX + @EndText
Effect: calls a function containing <lpc commands>
Example: If you type:
eval return 1 + cos( 0.0 )
the command creates a temporary file in your home dir containing the line:
eval() { return 1 + cos( 0.0 ); }
then does call_other on the files's eval() function, giving:
Result = 2.000000
EndText
);
return 1;
}
