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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 2001-2019 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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|
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/*! \file hostmask.c |
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* \brief Code to efficiently find IP & hostmask based configs. |
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* \version $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "memory.h" |
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#include "ircd_defs.h" |
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#include "list.h" |
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#include "conf.h" |
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#include "hostmask.h" |
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#include "send.h" |
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#include "irc_string.h" |
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#include "ircd.h" |
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|
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|
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#define DigitParse(ch) do { \ |
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if (ch >= '0' && ch <= '9') \ |
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ch = ch - '0'; \ |
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else if (ch >= 'A' && ch <= 'F') \ |
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ch = ch - 'A' + 10; \ |
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else if (ch >= 'a' && ch <= 'f') \ |
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ch = ch - 'a' + 10; \ |
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} while (false); |
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|
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/* Hashtable stuff...now external as it's used in m_stats.c */ |
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dlink_list atable[ATABLE_SIZE]; |
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|
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/* The mask parser/type determination code... */ |
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|
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/* int try_parse_v6_netmask(const char *, struct irc_ssaddr *, int *); |
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* Input: A possible IPV6 address as a string. |
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* Output: An integer describing whether it is an IPV6 or hostmask, |
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* an address(if it is IPV6), a bitlength(if it is IPV6). |
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* Side effects: None |
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* Comments: Called from parse_netmask |
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*/ |
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static int |
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try_parse_v6_netmask(const char *text, struct irc_ssaddr *addr, int *b) |
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{ |
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char c; |
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int d[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; |
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int dp = 0; |
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int nyble = 4; |
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int finsert = -1; |
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int bits = 128; |
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int deficit = 0; |
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short dc[8]; |
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struct sockaddr_in6 *const v6 = (struct sockaddr_in6 *)addr; |
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|
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for (const char *p = text; (c = *p); ++p) |
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{ |
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if (IsXDigit(c)) |
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{ |
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if (nyble == 0) |
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return HM_HOST; |
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DigitParse(c); |
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d[dp] |= c << (4 * --nyble); |
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} |
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else if (c == ':') |
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{ |
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if (p > text && *(p - 1) == ':') |
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{ |
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if (finsert >= 0) |
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return HM_HOST; |
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finsert = dp; |
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} |
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else |
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{ |
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/* |
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* If there were less than 4 hex digits, e.g. :ABC: shift right |
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* so we don't interpret it as ABC0 -A1kmm |
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*/ |
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d[dp] = d[dp] >> 4 * nyble; |
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nyble = 4; |
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|
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if (++dp >= 8) |
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return HM_HOST; |
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} |
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} |
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else if (c == '*') |
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{ |
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/* * must be last, and * is ambiguous if there is a ::... -A1kmm */ |
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if (finsert >= 0 || *(p + 1) || dp == 0 || *(p - 1) != ':') |
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return HM_HOST; |
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bits = dp * 16; |
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} |
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else if (c == '/') |
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{ |
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char *after; |
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|
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d[dp] = d[dp] >> 4 * nyble; |
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++dp; |
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bits = strtoul(p + 1, &after, 10); |
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|
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if (bits < 0 || *after) |
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return HM_HOST; |
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if (bits > dp * 4 && !(finsert >= 0 && bits <= 128)) |
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return HM_HOST; |
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break; |
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} |
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else |
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return HM_HOST; |
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} |
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|
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d[dp] = d[dp] >> 4 * nyble; |
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|
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if (c == 0) |
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++dp; |
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if (finsert < 0 && bits == 0) |
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bits = dp * 16; |
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|
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/* How many words are missing? -A1kmm */ |
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deficit = bits / 16 + ((bits % 16) ? 1 : 0) - dp; |
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|
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/* Now fill in the gaps(from ::) in the copied table... -A1kmm */ |
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for (dp = 0, nyble = 0; dp < 8; ++dp) |
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{ |
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if (nyble == finsert && deficit) |
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{ |
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dc[dp] = 0; |
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deficit--; |
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} |
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else |
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dc[dp] = d[nyble++]; |
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} |
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|
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/* Set unused bits to 0... -A1kmm */ |
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if (bits < 128 && (bits % 16 != 0)) |
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dc[bits / 16] &= ~((1 << (15 - bits % 16)) - 1); |
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for (dp = bits / 16 + (bits % 16 ? 1 : 0); dp < 8; ++dp) |
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dc[dp] = 0; |
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|
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/* And assign... -A1kmm */ |
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if (addr) |
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{ |
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v6->sin6_family = AF_INET6; |
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|
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for (dp = 0; dp < 8; ++dp) |
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/* The cast is a kludge to make netbsd work. */ |
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((unsigned short *)&v6->sin6_addr)[dp] = htons(dc[dp]); |
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} |
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|
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if (b) |
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*b = bits; |
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return HM_IPV6; |
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} |
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|
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/* int try_parse_v4_netmask(const char *, struct irc_ssaddr *, int *); |
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* Input: A possible IPV4 address as a string. |
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* Output: An integer describing whether it is an IPV4 or hostmask, |
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* an address(if it is IPV4), a bitlength(if it is IPV4). |
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* Side effects: None |
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* Comments: Called from parse_netmask |
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*/ |
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static int |
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try_parse_v4_netmask(const char *text, struct irc_ssaddr *addr, int *b) |
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{ |
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const char *digits[4]; |
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unsigned char addb[4]; |
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int n = 0, bits = 0; |
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char c; |
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struct sockaddr_in *const v4 = (struct sockaddr_in *)addr; |
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|
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digits[n++] = text; |
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|
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for (const char *p = text; (c = *p); ++p) |
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{ |
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if (c >= '0' && c <= '9') /* empty */ |
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; |
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else if (c == '.') |
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{ |
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if (n >= 4) |
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return HM_HOST; |
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|
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digits[n++] = p + 1; |
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} |
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else if (c == '*') |
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{ |
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if (*(p + 1) || n == 1 || *(p - 1) != '.') |
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return HM_HOST; |
203 |
|
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bits = (n - 1) * 8; |
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break; |
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} |
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else if (c == '/') |
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{ |
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char *after; |
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bits = strtoul(p + 1, &after, 10); |
211 |
|
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if (bits < 0 || *after) |
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return HM_HOST; |
214 |
if (bits > n * 8) |
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return HM_HOST; |
216 |
|
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break; |
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} |
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else |
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return HM_HOST; |
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} |
222 |
|
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if (n < 4 && bits == 0) |
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bits = n * 8; |
225 |
if (bits) |
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while (n < 4) |
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digits[n++] = "0"; |
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|
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for (n = 0; n < 4; ++n) |
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addb[n] = strtoul(digits[n], NULL, 10); |
231 |
|
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if (bits == 0) |
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bits = 32; |
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|
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/* Set unused bits to 0... -A1kmm */ |
236 |
if (bits < 32 && bits % 8) |
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addb[bits / 8] &= ~((1 << (8 - bits % 8)) - 1); |
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for (n = bits / 8 + (bits % 8 ? 1 : 0); n < 4; ++n) |
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addb[n] = 0; |
240 |
if (addr) |
241 |
{ |
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v4->sin_family = AF_INET; |
243 |
v4->sin_addr.s_addr = |
244 |
htonl(addb[0] << 24 | addb[1] << 16 | addb[2] << 8 | addb[3]); |
245 |
} |
246 |
|
247 |
if (b) |
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*b = bits; |
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return HM_IPV4; |
250 |
} |
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|
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/* int parse_netmask(const char *, struct irc_ssaddr *, int *); |
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* Input: A hostmask, or an IPV4/6 address. |
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* Output: An integer describing whether it is an IPV4, IPV6 address or a |
255 |
* hostmask, an address(if it is an IP mask), |
256 |
* a bitlength(if it is IP mask). |
257 |
* Side effects: None |
258 |
*/ |
259 |
int |
260 |
parse_netmask(const char *text, struct irc_ssaddr *addr, int *b) |
261 |
{ |
262 |
if (addr) |
263 |
memset(addr, 0, sizeof(*addr)); |
264 |
|
265 |
if (strchr(text, '.')) |
266 |
return try_parse_v4_netmask(text, addr, b); |
267 |
if (strchr(text, ':')) |
268 |
return try_parse_v6_netmask(text, addr, b); |
269 |
|
270 |
return HM_HOST; |
271 |
} |
272 |
|
273 |
/* The address matching stuff... */ |
274 |
/* int match_ipv6(struct irc_ssaddr *, struct irc_ssaddr *, int) |
275 |
* Input: An IP address, an IP mask, the number of bits in the mask. |
276 |
* Output: if match, -1 else 0 |
277 |
* Side effects: None |
278 |
*/ |
279 |
bool |
280 |
match_ipv6(const struct irc_ssaddr *addr, const struct irc_ssaddr *mask, int bits) |
281 |
{ |
282 |
int i, m, n = bits / 8; |
283 |
const struct sockaddr_in6 *const v6 = (const struct sockaddr_in6 *)addr; |
284 |
const struct sockaddr_in6 *const v6mask = (const struct sockaddr_in6 *)mask; |
285 |
|
286 |
for (i = 0; i < n; ++i) |
287 |
if (v6->sin6_addr.s6_addr[i] != v6mask->sin6_addr.s6_addr[i]) |
288 |
return false; |
289 |
|
290 |
if ((m = bits % 8) == 0) |
291 |
return true; |
292 |
if ((v6->sin6_addr.s6_addr[n] & ~((1 << (8 - m)) - 1)) == |
293 |
v6mask->sin6_addr.s6_addr[n]) |
294 |
return true; |
295 |
return false; |
296 |
} |
297 |
|
298 |
/* int match_ipv4(struct irc_ssaddr *, struct irc_ssaddr *, int) |
299 |
* Input: An IP address, an IP mask, the number of bits in the mask. |
300 |
* Output: if match, -1 else 0 |
301 |
* Side Effects: None |
302 |
*/ |
303 |
bool |
304 |
match_ipv4(const struct irc_ssaddr *addr, const struct irc_ssaddr *mask, int bits) |
305 |
{ |
306 |
const struct sockaddr_in *const v4 = (const struct sockaddr_in *)addr; |
307 |
const struct sockaddr_in *const v4mask = (const struct sockaddr_in *)mask; |
308 |
|
309 |
if ((ntohl(v4->sin_addr.s_addr) & ~((1 << (32 - bits)) - 1)) == |
310 |
ntohl(v4mask->sin_addr.s_addr)) |
311 |
return true; |
312 |
return false; |
313 |
} |
314 |
|
315 |
/* unsigned long hash_ipv4(struct irc_ssaddr*) |
316 |
* Input: An IP address. |
317 |
* Output: A hash value of the IP address. |
318 |
* Side effects: None |
319 |
*/ |
320 |
static uint32_t |
321 |
hash_ipv4(const struct irc_ssaddr *addr, int bits) |
322 |
{ |
323 |
if (bits) |
324 |
{ |
325 |
const struct sockaddr_in *const v4 = (const struct sockaddr_in *)addr; |
326 |
uint32_t av = ntohl(v4->sin_addr.s_addr) & ~((1 << (32 - bits)) - 1); |
327 |
|
328 |
return (av ^ (av >> 12) ^ (av >> 24)) & (ATABLE_SIZE - 1); |
329 |
} |
330 |
|
331 |
return 0; |
332 |
} |
333 |
|
334 |
/* unsigned long hash_ipv6(struct irc_ssaddr*) |
335 |
* Input: An IP address. |
336 |
* Output: A hash value of the IP address. |
337 |
* Side effects: None |
338 |
*/ |
339 |
static uint32_t |
340 |
hash_ipv6(const struct irc_ssaddr *addr, int bits) |
341 |
{ |
342 |
uint32_t v = 0, n; |
343 |
const struct sockaddr_in6 *const v6 = (const struct sockaddr_in6 *)addr; |
344 |
|
345 |
for (n = 0; n < 16; ++n) |
346 |
{ |
347 |
if (bits >= 8) |
348 |
{ |
349 |
v ^= v6->sin6_addr.s6_addr[n]; |
350 |
bits -= 8; |
351 |
} |
352 |
else if (bits) |
353 |
{ |
354 |
v ^= v6->sin6_addr.s6_addr[n] & ~((1 << (8 - bits)) - 1); |
355 |
return v & (ATABLE_SIZE - 1); |
356 |
} |
357 |
else |
358 |
return v & (ATABLE_SIZE - 1); |
359 |
} |
360 |
|
361 |
return v & (ATABLE_SIZE - 1); |
362 |
} |
363 |
|
364 |
/* int hash_text(const char *start) |
365 |
* Input: The start of the text to hash. |
366 |
* Output: The hash of the string between 1 and (TH_MAX-1) |
367 |
* Side-effects: None. |
368 |
*/ |
369 |
static uint32_t |
370 |
hash_text(const char *start) |
371 |
{ |
372 |
uint32_t h = 0; |
373 |
|
374 |
for (const char *p = start; *p; ++p) |
375 |
h = (h << 4) - (h + ToLower(*p)); |
376 |
|
377 |
return h & (ATABLE_SIZE - 1); |
378 |
} |
379 |
|
380 |
/* unsigned long get_hash_mask(const char *) |
381 |
* Input: The text to hash. |
382 |
* Output: The hash of the string right of the first '.' past the last |
383 |
* wildcard in the string. |
384 |
* Side-effects: None. |
385 |
*/ |
386 |
static uint32_t |
387 |
get_mask_hash(const char *text) |
388 |
{ |
389 |
const char *hp = "", *p; |
390 |
|
391 |
for (p = text + strlen(text) - 1; p >= text; --p) |
392 |
if (IsMWildChar(*p)) |
393 |
return hash_text(hp); |
394 |
else if (*p == '.') |
395 |
hp = p + 1; |
396 |
return hash_text(text); |
397 |
} |
398 |
|
399 |
/* struct MaskItem *find_conf_by_address(const char *, struct irc_ssaddr *, |
400 |
* int type, int fam, const char *username) |
401 |
* Input: The hostname, the address, the type of mask to find, the address |
402 |
* family, the username. |
403 |
* Output: The matching value with the highest precedence. |
404 |
* Side-effects: None |
405 |
* Note: Setting bit 0 of the type means that the username is ignored. |
406 |
* Warning: IsNeedPassword for everything that is not an auth{} entry |
407 |
* should always be true (i.e. conf->flags & CONF_FLAGS_NEED_PASSWORD == 0) |
408 |
*/ |
409 |
struct MaskItem * |
410 |
find_conf_by_address(const char *name, const struct irc_ssaddr *addr, unsigned int type, |
411 |
const char *username, const char *password, int do_match) |
412 |
{ |
413 |
unsigned int hprecv = 0; |
414 |
dlink_node *node; |
415 |
struct MaskItem *hprec = NULL; |
416 |
struct AddressRec *arec = NULL; |
417 |
int (*cmpfunc)(const char *, const char *) = do_match ? match : irccmp; |
418 |
|
419 |
if (addr) |
420 |
{ |
421 |
/* Check for IPV6 matches... */ |
422 |
if (addr->ss.ss_family == AF_INET6) |
423 |
{ |
424 |
for (int b = 128; b >= 0; b -= 16) |
425 |
{ |
426 |
DLINK_FOREACH(node, atable[hash_ipv6(addr, b)].head) |
427 |
{ |
428 |
arec = node->data; |
429 |
|
430 |
if ((arec->type == type) && |
431 |
arec->precedence > hprecv && |
432 |
arec->masktype == HM_IPV6 && |
433 |
match_ipv6(addr, &arec->Mask.ipa.addr, |
434 |
arec->Mask.ipa.bits) && |
435 |
(!username || !cmpfunc(arec->username, username)) && |
436 |
(IsNeedPassword(arec->conf) || arec->conf->passwd == NULL || |
437 |
match_conf_password(password, arec->conf))) |
438 |
{ |
439 |
hprecv = arec->precedence; |
440 |
hprec = arec->conf; |
441 |
} |
442 |
} |
443 |
} |
444 |
} |
445 |
else if (addr->ss.ss_family == AF_INET) |
446 |
{ |
447 |
for (int b = 32; b >= 0; b -= 8) |
448 |
{ |
449 |
DLINK_FOREACH(node, atable[hash_ipv4(addr, b)].head) |
450 |
{ |
451 |
arec = node->data; |
452 |
|
453 |
if ((arec->type == type) && |
454 |
arec->precedence > hprecv && |
455 |
arec->masktype == HM_IPV4 && |
456 |
match_ipv4(addr, &arec->Mask.ipa.addr, |
457 |
arec->Mask.ipa.bits) && |
458 |
(!username || !cmpfunc(arec->username, username)) && |
459 |
(IsNeedPassword(arec->conf) || arec->conf->passwd == NULL || |
460 |
match_conf_password(password, arec->conf))) |
461 |
{ |
462 |
hprecv = arec->precedence; |
463 |
hprec = arec->conf; |
464 |
} |
465 |
} |
466 |
} |
467 |
} |
468 |
} |
469 |
|
470 |
if (name) |
471 |
{ |
472 |
const char *p = name; |
473 |
|
474 |
while (true) |
475 |
{ |
476 |
DLINK_FOREACH(node, atable[hash_text(p)].head) |
477 |
{ |
478 |
arec = node->data; |
479 |
if ((arec->type == type) && |
480 |
arec->precedence > hprecv && |
481 |
(arec->masktype == HM_HOST) && |
482 |
!cmpfunc(arec->Mask.hostname, name) && |
483 |
(!username || !cmpfunc(arec->username, username)) && |
484 |
(IsNeedPassword(arec->conf) || arec->conf->passwd == NULL || |
485 |
match_conf_password(password, arec->conf))) |
486 |
{ |
487 |
hprecv = arec->precedence; |
488 |
hprec = arec->conf; |
489 |
} |
490 |
} |
491 |
|
492 |
if ((p = strchr(p, '.')) == NULL) |
493 |
break; |
494 |
++p; |
495 |
} |
496 |
|
497 |
DLINK_FOREACH(node, atable[0].head) |
498 |
{ |
499 |
arec = node->data; |
500 |
|
501 |
if (arec->type == type && |
502 |
arec->precedence > hprecv && |
503 |
arec->masktype == HM_HOST && |
504 |
!cmpfunc(arec->Mask.hostname, name) && |
505 |
(!username || !cmpfunc(arec->username, username)) && |
506 |
(IsNeedPassword(arec->conf) || arec->conf->passwd == NULL || |
507 |
match_conf_password(password, arec->conf))) |
508 |
{ |
509 |
hprecv = arec->precedence; |
510 |
hprec = arec->conf; |
511 |
} |
512 |
} |
513 |
} |
514 |
|
515 |
return hprec; |
516 |
} |
517 |
|
518 |
/* struct MaskItem* find_address_conf(const char*, const char*, |
519 |
* struct irc_ssaddr*, int, char *); |
520 |
* Input: The hostname, username, address, address family. |
521 |
* Output: The applicable MaskItem. |
522 |
* Side-effects: None |
523 |
*/ |
524 |
struct MaskItem * |
525 |
find_address_conf(const char *host, const char *user, const struct irc_ssaddr *addr, const char *password) |
526 |
{ |
527 |
struct MaskItem *authcnf = NULL, *killcnf = NULL; |
528 |
|
529 |
/* Find the best auth{} block... If none, return NULL -A1kmm */ |
530 |
if ((authcnf = find_conf_by_address(host, addr, CONF_CLIENT, user, password, 1)) == NULL) |
531 |
return NULL; |
532 |
|
533 |
/* If they are exempt from K-lines, return the best auth{} block. -A1kmm */ |
534 |
if (IsConfExemptKline(authcnf)) |
535 |
return authcnf; |
536 |
|
537 |
/* Find the best K-line... -A1kmm */ |
538 |
killcnf = find_conf_by_address(host, addr, CONF_KLINE, user, NULL, 1); |
539 |
|
540 |
/* |
541 |
* If they are K-lined, return the K-line. Otherwise, return the |
542 |
* auth {} block. -A1kmm |
543 |
*/ |
544 |
if (killcnf) |
545 |
return killcnf; |
546 |
|
547 |
return authcnf; |
548 |
} |
549 |
|
550 |
/* struct MaskItem* find_dline_conf(struct irc_ssaddr*, int) |
551 |
* |
552 |
* Input: An address, an address family. |
553 |
* Output: The best matching D-line or exempt line. |
554 |
* Side effects: None. |
555 |
*/ |
556 |
struct MaskItem * |
557 |
find_dline_conf(const struct irc_ssaddr *addr) |
558 |
{ |
559 |
struct MaskItem *eline; |
560 |
|
561 |
eline = find_conf_by_address(NULL, addr, CONF_EXEMPT, NULL, NULL, 1); |
562 |
if (eline) |
563 |
return eline; |
564 |
|
565 |
return find_conf_by_address(NULL, addr, CONF_DLINE, NULL, NULL, 1); |
566 |
} |
567 |
|
568 |
/* void add_conf_by_address(int, struct MaskItem *aconf) |
569 |
* Input: |
570 |
* Output: None |
571 |
* Side-effects: Adds this entry to the hash table. |
572 |
*/ |
573 |
struct AddressRec * |
574 |
add_conf_by_address(const unsigned int type, struct MaskItem *conf) |
575 |
{ |
576 |
const char *const hostname = conf->host; |
577 |
const char *const username = conf->user; |
578 |
static unsigned int prec_value = UINT_MAX; |
579 |
int bits = 0; |
580 |
|
581 |
assert(type && !EmptyString(hostname)); |
582 |
|
583 |
struct AddressRec *arec = xcalloc(sizeof(*arec)); |
584 |
arec->masktype = parse_netmask(hostname, &arec->Mask.ipa.addr, &bits); |
585 |
arec->Mask.ipa.bits = bits; |
586 |
arec->username = username; |
587 |
arec->conf = conf; |
588 |
arec->precedence = prec_value--; |
589 |
arec->type = type; |
590 |
|
591 |
switch (arec->masktype) |
592 |
{ |
593 |
case HM_IPV4: |
594 |
/* We have to do this, since we do not re-hash for every bit -A1kmm. */ |
595 |
bits -= bits % 8; |
596 |
dlinkAdd(arec, &arec->node, &atable[hash_ipv4(&arec->Mask.ipa.addr, bits)]); |
597 |
break; |
598 |
case HM_IPV6: |
599 |
/* We have to do this, since we do not re-hash for every bit -A1kmm. */ |
600 |
bits -= bits % 16; |
601 |
dlinkAdd(arec, &arec->node, &atable[hash_ipv6(&arec->Mask.ipa.addr, bits)]); |
602 |
break; |
603 |
default: /* HM_HOST */ |
604 |
arec->Mask.hostname = hostname; |
605 |
dlinkAdd(arec, &arec->node, &atable[get_mask_hash(hostname)]); |
606 |
break; |
607 |
} |
608 |
|
609 |
return arec; |
610 |
} |
611 |
|
612 |
/* void delete_one_address(const char*, struct MaskItem*) |
613 |
* Input: An address string, the associated MaskItem. |
614 |
* Output: None |
615 |
* Side effects: Deletes an address record. Frees the MaskItem if there |
616 |
* is nothing referencing it, sets it as illegal otherwise. |
617 |
*/ |
618 |
void |
619 |
delete_one_address_conf(const char *address, struct MaskItem *conf) |
620 |
{ |
621 |
int bits = 0; |
622 |
uint32_t hv = 0; |
623 |
dlink_node *node; |
624 |
struct irc_ssaddr addr; |
625 |
|
626 |
switch (parse_netmask(address, &addr, &bits)) |
627 |
{ |
628 |
case HM_IPV4: |
629 |
/* We have to do this, since we do not re-hash for every bit -A1kmm. */ |
630 |
bits -= bits % 8; |
631 |
hv = hash_ipv4(&addr, bits); |
632 |
break; |
633 |
case HM_IPV6: |
634 |
/* We have to do this, since we do not re-hash for every bit -A1kmm. */ |
635 |
bits -= bits % 16; |
636 |
hv = hash_ipv6(&addr, bits); |
637 |
break; |
638 |
default: /* HM_HOST */ |
639 |
hv = get_mask_hash(address); |
640 |
break; |
641 |
} |
642 |
|
643 |
DLINK_FOREACH(node, atable[hv].head) |
644 |
{ |
645 |
struct AddressRec *arec = node->data; |
646 |
|
647 |
if (arec->conf == conf) |
648 |
{ |
649 |
dlinkDelete(&arec->node, &atable[hv]); |
650 |
|
651 |
if (conf->ref_count == 0) |
652 |
conf_free(conf); |
653 |
|
654 |
xfree(arec); |
655 |
return; |
656 |
} |
657 |
} |
658 |
} |
659 |
|
660 |
/* void clear_out_address_conf(void) |
661 |
* Input: None |
662 |
* Output: None |
663 |
* Side effects: Clears out all address records in the hash table, |
664 |
* frees them, and frees the MaskItems if nothing references |
665 |
* them, otherwise sets them as illegal. |
666 |
*/ |
667 |
void |
668 |
clear_out_address_conf(void) |
669 |
{ |
670 |
dlink_node *node, *node_next; |
671 |
|
672 |
for (unsigned int i = 0; i < ATABLE_SIZE; ++i) |
673 |
{ |
674 |
DLINK_FOREACH_SAFE(node, node_next, atable[i].head) |
675 |
{ |
676 |
struct AddressRec *arec = node->data; |
677 |
|
678 |
/* |
679 |
* Destroy the ircd.conf items and keep those that are in the databases |
680 |
*/ |
681 |
if (IsConfDatabase(arec->conf)) |
682 |
continue; |
683 |
|
684 |
dlinkDelete(&arec->node, &atable[i]); |
685 |
arec->conf->active = false; |
686 |
|
687 |
if (arec->conf->ref_count == 0) |
688 |
conf_free(arec->conf); |
689 |
xfree(arec); |
690 |
} |
691 |
} |
692 |
} |
693 |
|
694 |
static void |
695 |
hostmask_send_expiration(const struct AddressRec *const arec) |
696 |
{ |
697 |
char ban_type = '?'; |
698 |
|
699 |
if (ConfigGeneral.tkline_expire_notices == 0) |
700 |
return; |
701 |
|
702 |
switch (arec->type) |
703 |
{ |
704 |
case CONF_KLINE: |
705 |
ban_type = 'K'; |
706 |
break; |
707 |
case CONF_DLINE: |
708 |
ban_type = 'D'; |
709 |
break; |
710 |
default: break; |
711 |
} |
712 |
|
713 |
sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE, |
714 |
"Temporary %c-line for [%s@%s] expired", ban_type, |
715 |
(arec->conf->user) ? arec->conf->user : "*", |
716 |
(arec->conf->host) ? arec->conf->host : "*"); |
717 |
} |
718 |
|
719 |
void |
720 |
hostmask_expire_temporary(void) |
721 |
{ |
722 |
dlink_node *node, *node_next; |
723 |
|
724 |
for (unsigned int i = 0; i < ATABLE_SIZE; ++i) |
725 |
{ |
726 |
DLINK_FOREACH_SAFE(node, node_next, atable[i].head) |
727 |
{ |
728 |
struct AddressRec *arec = node->data; |
729 |
|
730 |
if (arec->conf->until == 0 || arec->conf->until > CurrentTime) |
731 |
continue; |
732 |
|
733 |
switch (arec->type) |
734 |
{ |
735 |
case CONF_KLINE: |
736 |
case CONF_DLINE: |
737 |
hostmask_send_expiration(arec); |
738 |
|
739 |
dlinkDelete(&arec->node, &atable[i]); |
740 |
conf_free(arec->conf); |
741 |
xfree(arec); |
742 |
break; |
743 |
default: break; |
744 |
} |
745 |
} |
746 |
} |
747 |
} |