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