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NeoStats/exclude.c

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/* NeoStats - IRC Statistical Services
** Copyright (c) 1999-2004 Adam Rutter, Justin Hammond, Mark Hetherington
** http://www.neostats.net/
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
** USA
**
** NeoStats CVS Identification
** $Id$
*/
/* @file global exclusion handling functions
*/
#include <stdio.h>
#include "stats.h"
#include "exclude.h"
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#include "conf.h"
#include "log.h"
#include "ircstring.h"
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list_t *exclude_list;
typedef struct excludes {
enum type {
NS_EXCLUDE_HOST = 0x1,
NS_EXCLUDE_SERVER = 0x2,
NS_EXCLUDE_CHAN = 0x4,
} type;
char pattern[MAXHOST]; /* becuase hostname is the biggest this can get */
char addedby[MAXNICK];
time_t addedon;
} excludes;
/* @brief initilize the exlusion list
*
* @returns int specifing success/failure
*/
int init_exclude_list() {
char **row;
int i;
excludes *e;
char *tmp;
lnode_t *en;
exclude_list = list_create(-1);
if (GetTableData("Exclusions", &row) > 0) {
for (i = 0; row[i] != NULL; i++) {
e = malloc(sizeof(excludes));
bzero(e, sizeof(excludes));
if (GetData((void *)&tmp, CFGSTR, "Exclusions", row[i], "Pattern") > 0) {
strlcpy(e->pattern, tmp, MAXHOST);
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free (tmp);
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} else {
nlog(LOG_WARNING, LOG_CORE, "Exclusions: Can't add entry %s, Pattern invalid", row[i]);
continue;
}
if (GetData((void *)&tmp, CFGSTR, "Exclusions", row[i], "AddedBy") > 0) {
strlcpy(e->addedby, tmp, MAXNICK);
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free (tmp);
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}
e->addedon = atoi(row[i]);
GetData((void *)&e->type, CFGINT, "Exclusions", row[i], "Type");
nlog(LOG_DEBUG2, LOG_CORE, "Added Exclusion %s (%d) by %s on %d", e->pattern, e->type, e->addedby, (int)e->addedon);
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en = lnode_create(e);
list_append(exclude_list, en);
}
}
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free(row);
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return NS_SUCCESS;
}
/* @brief add a entry to the exlusion list
*
* @param u the user that sent the request
* @param type the type of exclusion being added. Chan, Host or Server
* @param pattern the actual pattern to use
* @returns nothing
*/
void ns_do_exclude_add(User *u, char *type, char *pattern) {
lnode_t *en;
excludes *e;
char tmp[BUFSIZE];
/* we dont do any checking to see if a similar entry already exists... oh well, thats upto the user */
e = malloc(sizeof(excludes));
strlcpy(e->addedby, u->nick, MAXNICK);
e->addedon = me.now;
if (!ircstrcasecmp("HOST", type)) {
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if (!index(pattern, '.')) {
prefmsg(u->nick, s_Services, "Error, Pattern must contain at least one \2.\2");
free(e);
return;
}
e->type = NS_EXCLUDE_HOST;
strlcpy(e->pattern, collapse(pattern), MAXHOST);
} else if (!ircstrcasecmp("CHAN", type)) {
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if (pattern[0] != '#') {
prefmsg(u->nick, s_Services, "Error, Pattern must begin with a \2#\2");
free(e);
return;
}
e->type = NS_EXCLUDE_CHAN;
strlcpy(e->pattern, collapse(pattern), MAXHOST);
} else if (!ircstrcasecmp("SERVER", type)) {
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if (!index(pattern, '.')) {
prefmsg(u->nick, s_Services, "Error, Pattern must contain at least one \2.\2");
free(e);
return;
}
e->type = NS_EXCLUDE_SERVER;
strlcpy(e->pattern, collapse(pattern), MAXHOST);
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} else {
prefmsg(u->nick, s_Services, "Error, Unknown type %s", type);
free(e);
return;
}
/* if we get here, then e is valid */
en = lnode_create(e);
list_append(exclude_list, en);
prefmsg(u->nick, s_Services, "Successfully added %s (%s) to Exclusion List", e->pattern, type);
chanalert(u->nick, s_Services, "%s added %s (%s) to the Exclusion List", u->nick, e->pattern, type);
/* now save the exclusion list */
ircsnprintf(tmp, BUFSIZE, "%d", (int)e->addedon);
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SetData((void *)e->type, CFGINT, "Exclusions", tmp, "Type");
SetData((void *)e->addedby, CFGSTR, "Exclusions", tmp, "AddedBy");
SetData((void *)e->pattern, CFGSTR, "Exclusions", tmp, "Pattern");
}
/* @brief del a entry from the exlusion list
*
* @param u the user that sent the request
* @param postition the position in the list that we are excluding
* @returns nothing
*/
void ns_do_exclude_del(User *u, char *position) {
lnode_t *en;
excludes *e;
int i, pos;
char tmp[BUFSIZE];
pos = atoi(position);
if (pos < 1) {
prefmsg(u->nick, s_Services, "Error, Position %d is out of range", pos);
return;
}
en = list_first(exclude_list);
i = 1;
while (en != NULL) {
if (i == pos) {
e = lnode_get(en);
ircsnprintf(tmp, BUFSIZE, "%d", (int)e->addedon);
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DelRow("Exclusions", tmp);
prefmsg(u->nick, s_Services, "Deleted %s out of Exclusion List", e->pattern);
free(e);
list_delete(exclude_list, en);
lnode_destroy(en);
return;
}
en = list_next(exclude_list, en);
i++;
}
/* if we get here, means that we never got a match */
prefmsg(u->nick, s_Services, "Entry %d was not found in the exclusion list", pos);
}
/* @brief list the entries from the exlusion list
*
* @param u the user that sent the request
* @param from the "user" that this message should come from, so we can call from modules
* @returns nothing
*/
void ns_do_exclude_list(User *u, char *from) {
lnode_t *en;
excludes *e;
int i = 0;
char tmp[BUFSIZE];
prefmsg(u->nick, from, "Global Exclusion List:");
en = list_first(exclude_list);
i = 1;
while (en != NULL) {
e = lnode_get(en);
switch (e->type) {
case NS_EXCLUDE_HOST:
ircsnprintf(tmp, BUFSIZE, "Host");
break;
case NS_EXCLUDE_CHAN:
ircsnprintf(tmp, BUFSIZE, "Chan");
break;
case NS_EXCLUDE_SERVER:
ircsnprintf(tmp, BUFSIZE, "Server");
break;
default:
ircsnprintf(tmp, BUFSIZE, "Unknown");
break;
}
prefmsg(u->nick, from, "%d) %s (%s) Added by %s on %s", i, e->pattern, tmp, e->addedby, sftime(e->addedon));
i++;
en = list_next(exclude_list, en);
}
prefmsg(u->nick, from, "End of Global Exclude List.");
}
/* @brief check if a user is matched against a exclusion
*
* Modifies the flags field of the User struct to indicate if the user is matched
* against a exclusion. This function is called when the user signs on
*
* @param u the user to check
* @returns nothing
*/
void ns_do_exclude_user(User *u) {
lnode_t *en;
excludes *e;
/* first thing we check is the server flag. if the server
* is excluded, then the user is excluded as well
*/
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if (u->server->flags & NS_FLAGS_EXCLUDED) {
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u->flags |= NS_FLAGS_EXCLUDED;
return;
}
en = list_first(exclude_list);
while (en != NULL) {
e = lnode_get(en);
if (e->type == NS_EXCLUDE_HOST) {
if (match(e->pattern, u->hostname)) {
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u->flags |= NS_FLAGS_EXCLUDED;
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return;
}
}
en = list_next(exclude_list, en);
}
/* if we are here, there is no match */
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u->flags &= ~NS_FLAGS_EXCLUDED;
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}
/* @brief check if a server is matched against a exclusion
*
* Modifies the flags field of the server struct to indicate if the server is matched
* against a exclusion. This function is called when the server connects
*
* @param s the Server to check
* @returns nothing
*/
void ns_do_exclude_server(Server *s) {
lnode_t *en;
excludes *e;
en = list_first(exclude_list);
while (en != NULL) {
e = lnode_get(en);
if (e->type == NS_EXCLUDE_SERVER) {
if (match(e->pattern, s->name)) {
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s->flags |= NS_FLAGS_EXCLUDED;
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return;
}
}
en = list_next(exclude_list, en);
}
/* if we are here, there is no match */
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s->flags &= ~NS_FLAGS_EXCLUDED;
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}
/* @brief check if a channel is matched against a exclusion
*
* Modifies the flags field of the channel struct to indicate if the channel is matched
* against a exclusion. This function is called when the channel is created
*
* @param c the channel to check
* @returns nothing
*/
void ns_do_exclude_chan(Chans *c) {
lnode_t *en;
excludes *e;
en = list_first(exclude_list);
while (en != NULL) {
e = lnode_get(en);
if (e->type == NS_EXCLUDE_CHAN) {
if (match(e->pattern, c->name)) {
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c->flags |= NS_FLAGS_EXCLUDED;
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return;
}
}
en = list_next(exclude_list, en);
}
/* if we are here, there is no match */
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c->flags &= ~NS_FLAGS_EXCLUDED;
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}
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