/*
* charybdis: An advanced ircd.
* snomask.c: Management for user server-notice masks.
*
* Copyright (c) 2006 William Pitcock <nenolod@nenolod.net>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "stdinc.h"
#include "client.h"
#include "snomask.h"
/* *INDENT-OFF* */
int snomask_modes[256] = {
/* 0x00 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x0F */
/* 0x10 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x1F */
/* 0x20 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x2F */
/* 0x30 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x3F */
0, /* @ */
0, /* A */
0, /* B */
SNO_CCONNEXT, /* C */
0, /* D */
0, /* E */
0, /* F */
0, /* G */
0, /* H */
0, /* I */
0, /* J */
0, /* K */
0, /* L */
0, /* M */
0, /* N */
0, /* O */
0, /* P */
0, /* Q */
0, /* R */
0, /* S */
0, /* T */
0, /* U */
0, /* V */
0, /* W */
0, /* X */
0, /* Y */
SNO_OPERSPY, /* Z */
/* 0x5B */ 0, 0, 0, 0, 0, 0, /* 0x60 */
0, /* a */
SNO_BOTS, /* b */
SNO_CCONN, /* c */
SNO_DEBUG, /* d */
0, /* e */
SNO_FULL, /* f */
0, /* g */
0, /* h */
0, /* i */
0, /* j */
SNO_SKILL, /* k */
0, /* l */
0, /* m */
SNO_NCHANGE, /* n */
0, /* o */
0, /* p */
0, /* q */
SNO_REJ, /* r */
SNO_GENERAL, /* s */
0, /* t */
SNO_UNAUTH, /* u */
0, /* v */
0, /* w */
SNO_EXTERNAL, /* x */
SNO_SPY, /* y */
0, /* z */
/* 0x7B */ 0, 0, 0, 0, 0, /* 0x7F */
/* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
/* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9F */
/* 0xA0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xAF */
/* 0xB0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xBF */
/* 0xC0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xCF */
/* 0xD0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xDF */
/* 0xE0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xEF */
/* 0xF0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 0xFF */
};
/* *INDENT-ON* */
static char snobuf[BUFSIZE];
/*
* construct_snobuf
*
* inputs - client to generate snomask string for
* outputs - snomask string of client
* side effects - NONE
*/
char *
construct_snobuf(unsigned int val)
{
int i;
char *ptr = snobuf;
*ptr = '\0';
*ptr++ = '+';
for (i = 0; i < 128; i++)
if (snomask_modes[i] && (val & snomask_modes[i]))
*ptr++ = (char) i;
*ptr++ = '\0';
return snobuf;
}
/*
* parse_snobuf_to_mask
*
* inputs - value to alter bitmask for, snomask itself
* outputs - replacement bitmask to set
* side effects - NONE
*/
unsigned int
parse_snobuf_to_mask(unsigned int val, const char *sno)
{
const char *p;
int what = SNO_ADD;
if (sno == NULL)
return val;
for (p = sno; *p != '\0'; p++)
{
switch(*p)
{
case '+':
what = SNO_ADD;
break;
case '-':
what = SNO_DEL;
break;
default:
if (what == SNO_ADD)
val |= snomask_modes[(unsigned char) *p];
else if (what == SNO_DEL)
val &= ~snomask_modes[(unsigned char) *p];
break;
}
}
return val;
}
/*
* find_snomask_slot
*
* inputs - NONE
* outputs - an available umode bitmask or
* 0 if no umodes are available
* side effects - NONE
*/
unsigned int
find_snomask_slot(void)
{
unsigned int all_umodes = 0, my_umode = 0, i;
for (i = 0; i < 128; i++)
all_umodes |= snomask_modes[i];
for (my_umode = 1; my_umode && (all_umodes & my_umode);
my_umode <<= 1);
return my_umode;
}