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NeoStats-opsb/opsb.c
fishwaldo b669fe6604 Initial revision
2002-08-31 09:28:34 +00:00

989 lines
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/* NetStats - IRC Statistical Services Copyright (c) 1999 Adam Rutter,
** Justin Hammond http://codeworks.kamserve.com
*
** Based from GeoStats 1.1.0 by Johnathan George net@lite.net
*
** NetStats CVS Identification
** $Id: opsb.c,v 1.1 2002/08/31 09:28:35 fishwaldo Exp $
*/
#include <stdio.h>
#include <fnmatch.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include "dl.h"
#include "stats.h"
#include "opsb.h"
const char opsbversion_date[] = __DATE__;
const char opsbversion_time[] = __TIME__;
void reportdns(char *data, adns_answer *a);
void dnsblscan(char *data, adns_answer *a);
static int ScanNick(char **av, int ac);
int startscan(scaninfo *scandata);
int do_set(User *u, char **av, int ac);
void savecache();
void loadcache();
void unconf();
extern const char *opsb_help[];
extern const char *opsb_help_oper[];
extern const char *opsb_help_lookup[];
extern const char *opsb_help_info[];
extern const char *opsb_help_check[];
extern const char *opsb_help_status[];
extern const char *opsb_help_set[];
extern const char *opsb_help_exclude[];
Module_Info my_info[] = { {
"OPSB",
"A Open Proxy Scanning Bot",
"1.0Beta1"
} };
int new_m_version(char *origin, char **av, int ac) {
snumeric_cmd(351,origin, "Module OPSB Loaded, Version: %s %s %s",my_info[0].module_version,opsbversion_date,opsbversion_time);
return 0;
}
Functions my_fn_list[] = {
{ MSG_VERSION, new_m_version, 1 },
#ifdef HAVE_TOKEN_SUP
{ TOK_VERSION, new_m_version, 1 },
#endif
{ NULL, NULL, 0 }
};
int findscan(const void *key1, const void *key2) {
const scaninfo *chan1 = key1;
return (strcasecmp(chan1->who, key2));
}
int __Bot_Message(char *origin, char **argv, int argc)
{
User *u, *u2;
lnode_t *lnode;
scaninfo *scandata;
exemptinfo *exempts;
int lookuptype, i;
u = finduser(origin);
if (!u) {
log("Unable to find user %s (opsb)", origin);
return -1;
}
if (!strcasecmp(argv[1], "help")) {
if (argc == 2) {
privmsg_list(u->nick, s_opsb, opsb_help);
if (UserLevel(u) >= 50)
privmsg_list(u->nick, s_opsb, opsb_help_oper);
} else if (!strcasecmp(argv[2], "lookup")) {
privmsg_list(u->nick, s_opsb, opsb_help_lookup);
} else if (!strcasecmp(argv[2], "info")) {
privmsg_list(u->nick, s_opsb, opsb_help_info);
} else if ((!strcasecmp(argv[2], "check") && UserLevel(u) >= 50)) {
privmsg_list(u->nick, s_opsb, opsb_help_check);
} else if ((!strcasecmp(argv[2], "status") && UserLevel(u) >= 50)) {
privmsg_list(u->nick, s_opsb, opsb_help_status);
} else if ((!strcasecmp(argv[2], "set") && UserLevel(u) >= 100)) {
privmsg_list(u->nick, s_opsb, opsb_help_set);
} else if ((!strcasecmp(argv[2], "exclude") && UserLevel(u) > 100)) {
privmsg_list(u->nick, s_opsb, opsb_help_exclude);
} else {
prefmsg(u->nick, s_opsb, "Invalid Syntax. /msg %s help for more info", s_opsb);
}
return 1;
} else if (!strcasecmp(argv[1], "info")) {
privmsg_list(u->nick, s_opsb, opsb_help_info);
return 1;
} else if (!strcasecmp(argv[1], "status")) {
if (UserLevel(u) < 50) {
prefmsg(u->nick, s_opsb, "Access Denied");
chanalert(s_opsb, "%s tried to view status, but is not a operator", u->nick);
return 1;
}
send_status(u);
return 1;
} else if (!strcasecmp(argv[1], "lookup")) {
if (argc < 3) {
prefmsg(u->nick, s_opsb, "Invalid Syntax. /msg %s help lookup for more help", s_opsb);
return 0;
}
scandata = malloc(sizeof(scaninfo));
scandata->dnsstate = REPORT_DNS;
strncpy(scandata->who, u->nick, MAXNICK);
strncpy(scandata->lookup, argv[2], MAXHOST);
/* if the lists are full, don't add it, and alert the user */
if (list_isfull(opsbl)) {
if (list_isfull(opsbq)) {
prefmsg(u->nick, s_opsb, "Too Busy. Try again Later");
free(scandata);
return 0;
}
prefmsg(u->nick, s_opsb, "OPSB list is full, queuing your request");
lnode = lnode_create(scandata);
list_append(opsbq, lnode);
}
if (inet_aton(scandata->lookup, NULL) > 0) {
lookuptype = adns_r_ptr;
} else {
if (argc == 4) {
if (!strcasecmp(argv[3], "txt"))
lookuptype = adns_r_txt;
else if (!strcasecmp(argv[3], "rp"))
lookuptype = adns_r_rp;
else if (!strcasecmp(argv[3], "ns"))
lookuptype = adns_r_ns;
else if (!strcasecmp(argv[3], "soa"))
lookuptype = adns_r_soa;
else
lookuptype = adns_r_a;
} else {
lookuptype = adns_r_a;
}
}
if (dns_lookup(scandata->lookup, lookuptype, reportdns, scandata->who) != 1) {
prefmsg(u->nick, s_opsb, "DnsLookup Failed.");
free(scandata);
return 0;
}
lnode = lnode_create(scandata);
list_append(opsbl, lnode);
} else if (!strcasecmp(argv[1], "check")) {
if (UserLevel(u) < 50) {
prefmsg(u->nick, s_opsb, "Access Denied");
chanalert(s_opsb, "%s tried to use check, but does not have access", u->nick);
return 0;
}
if (argc < 3) {
prefmsg(u->nick, s_opsb, "Invalid Syntax. /msg %s help check for more info", s_opsb);
return 0;
}
if ((list_find(opsbl, argv[2], findscan)) || (list_find(opsbq, argv[2], findscan))) {
prefmsg(u->nick, s_opsb, "Already Scanning (or in queue) %s. Not Scanning again", argv[2]);
return 0;
}
scandata = malloc(sizeof(scaninfo));
scandata->u = u;
if ((u2 = finduser(argv[2])) != NULL) {
/* don't scan users from my server */
if (!strcasecmp(u2->server->name, me.name)) {
prefmsg(u->nick, s_opsb, "Error, Can not scan NeoStats Bots");
return -1;
}
strncpy(scandata->who, u2->nick, MAXHOST);
strncpy(scandata->lookup, u2->hostname, MAXHOST);
strncpy(scandata->server, u2->server->name, MAXHOST);
scandata->ipaddr.s_addr = u2->ipaddr.s_addr;
if (scandata->ipaddr.s_addr > 0) {
scandata->dnsstate = DO_OPM_LOOKUP;
} else {
if (inet_aton(u2->hostname, &scandata->ipaddr) > 0)
scandata->dnsstate = DO_OPM_LOOKUP;
else {
scandata->dnsstate = GET_NICK_IP;
scandata->ipaddr.s_addr = 0;
}
}
} else {
strncpy(scandata->who, argv[2], MAXHOST);
strncpy(scandata->lookup, argv[2], MAXHOST);
bzero(scandata->server, MAXHOST);
if (inet_aton(argv[2], &scandata->ipaddr) > 0) {
scandata->dnsstate = DO_OPM_LOOKUP;
} else {
scandata->dnsstate = GET_NICK_IP;
scandata->ipaddr.s_addr = 0;
}
}
prefmsg(u->nick, s_opsb, "Checking %s for open Proxies", argv[2]);
if (!startscan(scandata))
prefmsg(u->nick, s_opsb, "Check Failed");
return 1;
} else if (!strcasecmp(argv[1], "EXCLUDE")) {
if (argc < 3) {
prefmsg(u->nick, s_opsb, "Syntax Error. /msg %s help exclude", s_opsb);
return 0;
}
if (!strcasecmp(argv[2], "LIST")) {
lnode = list_first(exempt);
i = 1;
prefmsg(u->nick, s_opsb, "Exception List:");
while (lnode) {
exempts = lnode_get(lnode);
prefmsg(u->nick, s_opsb, "%d) %s %s", i, exempts->host, (exempts->server ? "(Server)" : "(Client)"));
++i;
lnode = list_next(exempt, lnode);
}
prefmsg(u->nick, s_opsb, "End of List.");
chanalert(s_opsb, "%s requested Exception List", u->nick);
} else if (!strcasecmp(argv[2], "ADD")) {
if (argc < 5) {
prefmsg(u->nick, s_opsb, "Syntax Error. /msg %s help exclude", s_opsb);
return 0;
}
if (list_isfull(exempt)) {
prefmsg(u->nick, s_opsb, "Error, Exception list is full", s_opsb);
return 0;
}
if (!index(argv[3], '.')) {
prefmsg(u->nick, s_opsb, "Host field does not contain a vaild host");
return 0;
}
exempts = malloc(sizeof(exemptinfo));
snprintf(exempts->host, MAXHOST, "%s", argv[3]);
if (atoi(argv[4]) > 0)
exempts->server = 1;
else
exempts->server = 0;
lnode = lnode_create(exempts);
list_append(exempt, lnode);
prefmsg(u->nick, s_opsb, "Added %s (%s) exception to list", exempts->host, (exempts->server ? "(Server)" : "(Client)"));
chanalert(s_opsb, "%s added %s (%s) exception to list", u->nick, exempts->host, (exempts->server ? "(Server)" : "(Client)"));
} else if (!strcasecmp(argv[2], "DEL")) {
if (argc < 3) {
prefmsg(u->nick, s_opsb, "Syntax Error. /msg %s help exclude", s_opsb);
return 0;
}
if (atoi(argv[3]) != 0) {
lnode = list_first(exempt);
i = 1;
while (lnode) {
if (i == atoi(argv[3])) {
/* delete the entry */
exempts = lnode_get(lnode);
list_delete(exempt, lnode);
prefmsg(u->nick, s_opsb, "Deleted %s %s out of exception list", exempts->host, (exempts->server ? "(Server)" : "(Client)"));
chanalert(s_opsb, "%s deleted %s %s out of exception list", u->nick, exempts->host, (exempts->server ? "(Server)" : "(Client)"));
free(exempts);
return 1;
}
++i;
lnode = list_next(exempt, lnode);
}
/* if we get here, then we can't find the entry */
prefmsg(u->nick, s_opsb, "Error, Can't find entry %d. /msg %s exclude list", atoi(argv[3]), s_opsb);
return 0;
} else {
prefmsg(u->nick, s_opsb, "Error, Out of Range");
return 0;
}
} else {
prefmsg(u->nick, s_opsb, "Syntax Error. /msg %s help exclude", s_opsb);
return 0;
}
} else if (!strcasecmp(argv[1], "SET")) {
if (argc < 3) {
prefmsg(u->nick, s_opsb, "Syntax Error. /msg %s help set", s_opsb);
return 0;
}
do_set(u, argv, argc);
if (opsb.confed == 1)
savecache();
} else {
prefmsg(u->nick, s_opsb, "Syntax Error. /msg %s help", s_opsb);
}
return 1;
}
int do_set(User *u, char **av, int ac) {
char *buf;
if (UserLevel(u) < 100) {
prefmsg(u->nick, s_opsb, "Access Denied");
chanalert(s_opsb, "%s tried to set, but doesn't have access");
return 0;
}
if (!strcasecmp(av[2], "TARGETIP")) {
if (!inet_addr(av[3])) {
prefmsg(u->nick, s_opsb, "Invalid IP address (Can not be hostname) in TARGETIP");
return 0;
}
snprintf(opsb.targethost, MAXHOST, "%s", av[3]);
prefmsg(u->nick, s_opsb, "Target IP set to %s", av[3]);
chanalert(s_opsb, "%s changed the target ip to %s", u->nick, av[3]);
opsb.confed = 1;
return 1;
} else if (!strcasecmp(av[2], "TARGETPORT")) {
if (!atoi(av[3])) {
prefmsg(u->nick, s_opsb, "Invalid Port (Must be numeric) in TARGETPORT");
return 0;
}
opsb.targetport = atoi(av[3]);
prefmsg(u->nick, s_opsb, "Target PORT set to %d", opsb.targetport);
chanalert(s_opsb, "%s changed the target port to %d", u->nick, opsb.targetport);
opsb.confed = 1;
return 1;
} else if (!strcasecmp(av[2], "OPMDOMAIN")) {
if (!index(av[3], '.')) {
prefmsg(u->nick, s_opsb, "Invalid Domain name in OPMDOMAIN");
return 0;
}
snprintf(opsb.opmdomain, MAXHOST, "%s", av[3]);
prefmsg(u->nick, s_opsb, "OPM Domain changed to %s", opsb.opmdomain);
chanalert(s_opsb, "%s changed the opm domain to %s", u->nick, opsb.opmdomain);
opsb.confed = 1;
return 1;
} else if (!strcasecmp(av[2], "MAXBYTES")) {
if (!atoi(av[3])) {
prefmsg(u->nick, s_opsb, "Invalid setting (Must be numeric)");
return 0;
}
opsb.maxbytes = atoi(av[3]);
prefmsg(u->nick, s_opsb, "Max Bytes set to %d", opsb.maxbytes);
chanalert(s_opsb, "%s changed the Max Bytes setting to %d", u->nick, opsb.maxbytes);
opsb.confed = 1;
return 1;
} else if (!strcasecmp(av[2], "TIMEOUT")) {
if (!atoi(av[3]) || (atoi(av[3]) > 120)) {
prefmsg(u->nick, s_opsb, "Setting must be numeric, and below 120");
return 0;
}
opsb.timeout = atoi(av[3]);
prefmsg(u->nick, s_opsb, "Timeout set to %d", opsb.timeout);
chanalert(s_opsb, "%s changed the timeout to %d", u->nick, opsb.timeout);
opsb.confed = 1;
return 1;
} else if (!strcasecmp(av[2], "OPENSTRING")) {
buf = joinbuf(av, ac, 3);
snprintf(opsb.lookforstring, 512, "%s", buf);
free(buf);
prefmsg(u->nick, s_opsb, "OPENSTRING changed to %s", opsb.lookforstring);
chanalert(s_opsb, "%s changed OPENSTRING to %s", u->nick, opsb.lookforstring);
opsb.confed = 1;
return 0;
} else if (!strcasecmp(av[2], "SPLITTIME")) {
if (!atoi(av[3])) {
prefmsg(u->nick, s_opsb, "Error, Setting must be numeric");
return 0;
}
opsb.timedif = atoi(av[3]);
prefmsg(u->nick, s_opsb, "SPLITTIME changed to %d", opsb.timedif);
chanalert(s_opsb, "%s changed the split time to %d", u->nick, opsb.timedif);
opsb.confed = 1;
return 0;
} else if (!strcasecmp(av[2], "SCANMSG")) {
buf = joinbuf(av, ac, 3);
snprintf(opsb.scanmsg, 512, "%s", buf);
free(buf);
prefmsg(u->nick, s_opsb, "ScanMessage changed to %s", opsb.scanmsg);
chanalert(s_opsb, "%s changed the scan message to %s", u->nick, opsb.scanmsg);
opsb.confed = 1;
return 0;
} else if (!strcasecmp(av[2], "BANTIME")) {
if (!atoi(av[3])) {
prefmsg(u->nick, s_opsb, "Error, Bantime must be numeric (in Seconds)");
return 0;
}
opsb.bantime = atoi(av[3]);
prefmsg(u->nick, s_opsb, "Ban time changed to %d", opsb.bantime);
chanalert(s_opsb, "%s changed ban time to %d", u->nick, opsb.bantime);
opsb.confed = 1;
return 0;
} else if (!strcasecmp(av[2], "CACHETIME")) {
if (!atoi(av[3])) {
prefmsg(u->nick, s_opsb, "Error, CacheTime must be numeric (in Seconds)");
return 0;
}
opsb.cachetime = atoi(av[3]);
prefmsg(u->nick, s_opsb, "CacheTime set to %d", opsb.cachetime);
chanalert(s_opsb, "%s changed cachetime to %d", u->nick, opsb.cachetime);
opsb.confed = 1;
return 0;
} else {
prefmsg(u->nick, s_opsb, "TargetIP: %s", opsb.targethost);
prefmsg(u->nick, s_opsb, "TargetPort: %d", opsb.targetport);
prefmsg(u->nick, s_opsb, "OPM Domain: %s", opsb.opmdomain);
prefmsg(u->nick, s_opsb, "Max Bytes: %d", opsb.maxbytes);
prefmsg(u->nick, s_opsb, "TimeOut: %d", opsb.timeout);
prefmsg(u->nick, s_opsb, "Target String: %s", opsb.lookforstring);
prefmsg(u->nick, s_opsb, "Split Time: %d", opsb.timedif);
prefmsg(u->nick, s_opsb, "ScanMessage: %s", opsb.scanmsg);
prefmsg(u->nick, s_opsb, "Ban Time: %d", opsb.bantime);
prefmsg(u->nick, s_opsb, "Configured: %s", (opsb.confed ? "Yes" : "No"));
return 0;
}
}
int Online(char **av, int ac) {
struct sockaddr_in sa;
socklen_t ulen = sizeof(struct sockaddr_in);
if (init_bot(s_opsb,"opsb",me.name,"Proxy Scanning Bot", "+xd", my_info[0].module_name) == -1 ) {
/* Nick was in use!!!! */
s_opsb = strcat(s_opsb, "_");
init_bot(s_opsb,"opsb",me.name,"Proxy Scanning Bot", "+xd", my_info[0].module_name);
}
loadcache();
if (opsb.confed == 0) add_mod_timer("unconf", "Un_configured_warn", "opsb", 60);
unconf();
if (opsb.confed == 0) {
getpeername(servsock, (struct sockaddr *)&sa, (socklen_t*)&ulen);
snprintf(opsb.targethost, MAXHOST, "%s", inet_ntoa(sa.sin_addr));
}
add_mod_timer("cleanlist", "CleanProxyList", "opsb", 1);
add_mod_timer("savecache", "SaveProxyCache", "opsb", 600);
chanalert(s_opsb, "Open Proxy Scanning bot has started (Concurrent Scans: %d Sockets %d)", opsb.socks, opsb.socks *7);
return 1;
};
void unconf() {
if (opsb.confed == 1) return;
chanalert(s_opsb, "Warning, OPSB is configured with default Settings. Please Update this ASAP");
globops(s_opsb, "Warning, OPSB is configred with default Settings, Please Update this ASAP");
}
void checkqueue() {
lnode_t *scannode;
scaninfo *scandata;
/* exit, if the list is full */
if (list_isfull(opsbl) || list_isempty(opsbq))
return;
scannode = list_first(opsbq);
scandata = lnode_get(scannode);
list_delete(opsbq, scannode);
lnode_destroy(scannode);
startscan(scandata);
}
void addtocache(unsigned long ipaddr) {
lnode_t *cachenode;
C_entry *ce;
/* pop off the oldest entry */
if (list_isfull(cache)) {
#ifdef DEBUG
log("OPSB: Deleting Tail of Cache: %d", list_count(cache));
#endif
cachenode = list_del_last(cache);
ce = lnode_get(cachenode);
lnode_destroy(cachenode);
free(ce);
}
cachenode = list_first(cache);
while (cachenode) {
ce = lnode_get(cachenode);
if (ce->ip == ipaddr) {
#ifdef DEBUG
log("OPSB: Not adding %ld to cache as it already exists", ipaddr);
#endif
// return;
}
cachenode = list_next(cache, cachenode);
}
ce = malloc(sizeof(C_entry));
ce->ip = ipaddr;
ce->when = time(NULL);
cachenode = lnode_create(ce);
list_prepend(cache, cachenode);
}
int checkcache(scaninfo *scandata) {
lnode_t *node, *node2;
C_entry *ce;
exemptinfo *exempts;
node = list_first(exempt);
while (node) {
exempts = lnode_get(node);
if ((exempts->server == 1) && (scandata->server)) {
/* match a server */
if (fnmatch(exempts->host, scandata->server, 0) == 0) {
#ifdef DEBUG
log("OPSB: User %s exempt. Matched server entry %s in Exemptions", scandata->who, exempts->host);
#endif
if (scandata->u) prefmsg(scandata->u->nick, s_opsb,"%s Matches a Server Exception %s", scandata->who, exempts->host);
return 1;
}
} else {
if (fnmatch(exempts->host, scandata->lookup, 0) == 0) {
#ifdef DEBUG
log("OPSB: User %s exempt. Matched host entry %s in exemptions", scandata->who, exempts->host);
#endif
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "%s Matches a Host Exception %s", scandata->who, exempts->host);
return 2;
}
}
node = list_next(exempt, node);
}
node = list_first(cache);
while (node) {
ce = lnode_get(node);
/* delete any old cache entries */
if ((time(NULL) - ce->when) > opsb.cachetime) {
#ifdef DEBUG
log("OPSB: Deleting old cache entry %ld", ce->ip);
#endif
node2 = list_next(cache, node);
list_delete(cache, node);
lnode_destroy(node);
free(ce);
node = node2;
break;
}
if (ce->ip == scandata->ipaddr.s_addr) {
#ifdef DEBUG
log("OPSB: user %s is already in Cache", scandata->who);
#endif
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "User %s is already in Cache", scandata->who);
return 3;
}
node = list_next(cache, node);
}
return 0;
}
void savecache() {
lnode_t *node;
unsigned long *ip;
exemptinfo *exempts;
FILE *fp = fopen("data/opsb.db", "w");
if (!fp) {
log("OPSB: warning, Can not open cache file for writting");
chanalert(s_opsb, "Warning, Can not open cache file for writting");
return;
}
fprintf(fp, "%s\n", opsb.opmdomain);
fprintf(fp, "%s\n", opsb.targethost);
fprintf(fp, "%s\n", opsb.lookforstring);
fprintf(fp, "%d\n", opsb.targetport);
fprintf(fp, "%d\n", opsb.maxbytes);
fprintf(fp, "%d\n", opsb.timeout);
fprintf(fp, "%d\n", opsb.timedif);
fprintf(fp, "%s\n", opsb.scanmsg);
fprintf(fp, "%d\n", opsb.bantime);
fprintf(fp, "%d\n", opsb.confed);
fprintf(fp, "%d\n", opsb.cachetime);
/* exempts next */
node = list_first(exempt);
while (node) {
exempts = lnode_get(node);
fprintf(fp, "%s %d\n", exempts->host, exempts->server);
node = list_next(exempt, node);
}
fprintf(fp, "#CACHE\n");
node = list_first(cache);
while (node) {
ip = lnode_get(node);
if (*ip < 1) break;
fprintf(fp, "%ld\n", *ip);
node = list_next(cache, node);
}
fclose(fp);
}
void loadcache() {
lnode_t *node;
unsigned long ip;
exemptinfo *exempts = NULL;
char buf[512];
int gotcache = 0;
FILE *fp = fopen("data/opsb.db", "r");
char *tmp;
if (!fp) {
log("OPSB: Warning, Can not open Cache file for Reading");
chanalert(s_opsb, "Warning, Can not open Cache file for Reading");
return;
}
fgets(buf, 512, fp);
snprintf(opsb.opmdomain, MAXHOST, "%s", strtok(buf, "\n"));
fgets(buf, 512, fp);
snprintf(opsb.targethost, MAXHOST, "%s", strtok(buf, "\n"));
fgets(buf, 512, fp);
snprintf(opsb.lookforstring, 512, "%s", strtok(buf, "\n"));
fgets(buf, 512, fp);
opsb.targetport = atoi(buf);
fgets(buf, 512, fp);
opsb.maxbytes = atoi(buf);
fgets(buf, 512, fp);
opsb.timeout = atoi(buf);
fgets(buf, 512, fp);
opsb.timedif = atoi(buf);
fgets(buf, 512, fp);
snprintf(opsb.scanmsg, 512, "%s", strtok(buf, "\n"));
fgets(buf, 512, fp);
opsb.bantime = atoi(buf);
fgets(buf, 512, fp);
opsb.confed = atoi(buf);
fgets(buf, 512, fp);
opsb.cachetime = atoi(buf);
while (fgets(buf, 512, fp)) {
if (!strcasecmp("#CACHE\n", buf)) {
gotcache = 1;
}
if (gotcache == 0) {
if (list_isfull(exempt))
break;
exempts = malloc(sizeof(exemptinfo));
snprintf(exempts->host, MAXHOST, "%s", strtok(buf, " "));
exempts->server = atoi(strtok(NULL, " "));
node = lnode_create(exempts);
list_prepend(exempt, node);
} else {
if (list_isfull(cache))
break;
tmp = strtok(buf, "\n");
ip = strtol(tmp, (char **)NULL, 10);
if (ip > 0) addtocache(ip);
}
}
fclose(fp);
}
EventFnList my_event_list[] = {
{ "ONLINE", Online},
{ "SIGNON", ScanNick},
{ NULL, NULL}
};
Module_Info *__module_get_info() {
return my_info;
};
Functions *__module_get_functions() {
return my_fn_list;
};
EventFnList *__module_get_events() {
return my_event_list;
};
/* this function kicks of a scan of a user that just signed on the network */
static int ScanNick(char **av, int ac) {
User *u;
scaninfo *scandata;
lnode_t *scannode;
u = finduser(av[0]);
if (!u) {
log("OPSB: Ehhh, Can't find user %s", av[0]);
return -1;
}
/* don't scan users from my own server */
if (!strcasecmp(u->server->name, me.name)) {
return -1;
}
if (time(NULL) - u->TS > opsb.timedif) {
#ifdef DEBUG
log("Netsplit Nick %s, Not Scanning", av[0]);
#endif
return -1;
}
scannode = list_find(opsbl, av[0], findscan);
if (!scannode) scannode = list_find(opsbq, av[0], findscan);
if (scannode) {
log("ScanNick(): Not scanning %s as we are already scanning them", av[0]);
return -1;
}
prefmsg(u->nick, s_opsb, "%s", opsb.scanmsg);
scandata = malloc(sizeof(scaninfo));
scandata->u = NULL;
strncpy(scandata->who, u->nick, MAXHOST);
strncpy(scandata->lookup, u->hostname, MAXHOST);
strncpy(scandata->server, u->server->name, MAXHOST);
scandata->ipaddr.s_addr = u->ipaddr.s_addr;
if (scandata->ipaddr.s_addr > 0) {
scandata->dnsstate = DO_OPM_LOOKUP;
} else {
if (inet_aton(u->hostname, &scandata->ipaddr) > 0)
scandata->dnsstate = DO_OPM_LOOKUP;
else {
scandata->dnsstate = GET_NICK_IP;
scandata->ipaddr.s_addr = 0;
}
}
if (!startscan(scandata))
chanalert(s_opsb, "Warning Can't scan %s", u->nick);
return 1;
}
/* this function is the entry point for all scans. Any scan you want to kick off is started with this function. */
/* this includes moving scans from the queue to the active list */
int startscan(scaninfo *scandata) {
lnode_t *scannode;
unsigned char a, b, c, d;
char *buf;
int buflen;
int i;
i = checkcache(scandata);
if ((i > 0) && (!scandata->u)) {
free(scandata);
return 1;
}
switch(scandata->dnsstate) {
case GET_NICK_IP:
if (list_isfull(opsbl)) {
if (list_isfull(opsbq)) {
chanalert(s_opsb, "Warning, Both Current and queue lists are full. Not Adding additional scans");
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "To Busy. Try again later");
free(scandata);
return 0;
}
scannode = lnode_create(scandata);
list_append(opsbq, scannode);
#ifdef DEBUG
log("DNS: Added %s to dns queue", scandata->who);
#endif
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "Your Request has been added to the Queue");
return 1;
}
if (dns_lookup(scandata->lookup, adns_r_a, dnsblscan, scandata->who) != 1) {
log("DNS: startscan() GET_NICK_IP dns_lookup() failed");
free(scandata);
checkqueue();
return 0;
}
scannode = lnode_create(scandata);
list_append(opsbl, scannode);
#ifdef DEBUG
log("DNS: Added getnickip to DNS active list");
#endif
return 1;
break;
case DO_OPM_LOOKUP:
if (list_isfull(opsbl)) {
if(list_isfull(opsbq)) {
chanalert(s_opsb, "Warning, Both Current and Queue lists are full, Not adding Scan");
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "Too Busy. Try again Later");
free(scandata);
return 0;
}
scannode = lnode_create(scandata);
list_append(opsbq, scannode);
#ifdef DEBUG
log("DNS: Added OPM lookup to queue", scandata->who);
#endif
return 1;
}
d = (unsigned char) (scandata->ipaddr.s_addr >> 24) & 0xFF;
c = (unsigned char) (scandata->ipaddr.s_addr >> 16) & 0xFF;
b = (unsigned char) (scandata->ipaddr.s_addr >> 8) & 0xFF;
a = (unsigned char) scandata->ipaddr.s_addr & 0xFF;
/* Enough for a reversed IP and the zone. */
buflen = 18 + strlen(opsb.opmdomain);
buf = malloc(buflen * sizeof(*buf));
snprintf(buf, buflen, "%d.%d.%d.%d.%s", d, c, b, a, opsb.opmdomain);
if (dns_lookup(buf, adns_r_a, dnsblscan, scandata->who) != 1) {
log("DNS: startscan() DO_OPM_LOOKUP dns_lookup() failed");
free(scandata);
checkqueue();
return 0;
}
scannode = lnode_create(scandata);
list_append(opsbl, scannode);
#ifdef DEBUG
log("DNS: Added OPM %s lookup to DNS active list", buf);
#endif
free(buf);
start_proxy_scan(scannode);
++opsb.scanned;
return 1;
break;
default:
log("Warning, Unknown Status in startscan()");
free(scandata);
return -1;
}
}
/* this function is called when either checking the opm list, or when we are trying to resolve the hostname */
void dnsblscan(char *data, adns_answer *a) {
lnode_t *scannode;
scaninfo *scandata;
char *show;
int len, ri;
scannode = list_find(opsbl, data, findscan);
if (!scannode) {
log("dnsblscan(): Ehhh, Something is wrong here");
return;
}
scandata = lnode_get(scannode);
if (a) {
switch(scandata->dnsstate) {
case GET_NICK_IP:
if (a->nrrs < 1) {
chanalert(s_opsb, "No Record for %s. Aborting Scan", scandata->lookup);
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "No A record for %s. Aborting Scan", scandata->lookup);
list_delete(opsbl, scannode);
lnode_destroy(scannode);
free(scandata);
checkqueue();
break;
}
adns_rr_info(a->type, 0, 0, &len, 0, 0);
ri = adns_rr_info(a->type, 0, 0, 0, a->rrs.bytes, &show);
if (!ri) {
#ifdef DEBUG
log("DNS: Got IP for %s -> %s", scandata->who, show);
#endif
if (a->nrrs > 1) {
chanalert(s_opsb, "Warning, More than one IP address for %s. Using %s only", scandata->lookup, show);
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "Warning, More than one IP address for %s. Using %s only", scandata->lookup, show);
}
if (inet_aton(show, &scandata->ipaddr) > 0) {
scandata->dnsstate = DO_OPM_LOOKUP;
list_delete(opsbl, scannode);
lnode_destroy(scannode);
startscan(scandata);
break;
} else {
log("DNS: dnsblscan() GETNICKIP failed-> %s", show);
checkqueue();
}
}
log("DNS: dnsblscan GETNICKIP rr_info failed");
list_delete(opsbl, scannode);
lnode_destroy(scannode);
free(scandata);
checkqueue();
break;
case DO_OPM_LOOKUP:
if (a->nrrs > 0) {
/* TODO: print out what type of open proxy it is based on IP address returned */
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "%s apears in DNS blacklist", scandata->lookup);
scandata->dnsstate = OPMLIST;
do_ban(scandata);
checkqueue();
} else
if (scandata->u) prefmsg(scandata->u->nick, s_opsb, "%s does not appear in DNS black list", scandata->lookup);
break;
default:
log("Warning, Unknown Status in dnsblscan()");
return;
}
return;
}
}
/* this function is to send the results to the user after a lookup command */
void reportdns(char *data, adns_answer *a) {
lnode_t *dnslookup;
scaninfo *dnsinfo;
char *show;
int i, len, ri;
dnslookup = list_find(opsbl, data, findscan);
if (!dnslookup) {
log("reportdns(): Ehhh, something wrong here");
return;
}
dnsinfo = lnode_get(dnslookup);
if (a) {
adns_rr_info(a->type, 0, 0, &len, 0, 0);
for(i = 0; i < a->nrrs; i++) {
ri = adns_rr_info(a->type, 0, 0, 0, a->rrs.bytes +i*len, &show);
if (!ri) {
prefmsg(data, s_opsb, "%s resolves to %s", dnsinfo->lookup, show);
} else {
prefmsg(data, s_opsb, "DNS error %s", adns_strerror(ri));
}
free(show);
}
if (a->nrrs < 1) {
prefmsg(data, s_opsb, "%s Does not resolve", dnsinfo->lookup);
}
} else {
prefmsg(data, s_opsb, "A unknown error occured");
}
list_delete(opsbl, dnslookup);
lnode_destroy(dnslookup);
free(dnsinfo);
checkqueue();
}
void _init() {
s_opsb = "opsb";
globops(me.name, "OPSB Module Loaded");
/* we have to be carefull here. Currently, we have 7 sockets that get opened per connection. Soooo.
* we check that MAX_SCANS is not greater than the maxsockets available / 7
* this way, we *shouldn't* get problems with running out of sockets
*/
if (MAX_SCANS > me.maxsocks / 7) {
opsbl = list_create(me.maxsocks /7);
opsb.socks = me.maxsocks /7;
} else {
opsbl = list_create(MAX_SCANS);
opsb.socks = MAX_SCANS;
}
/* queue can be anything we want */
opsbq = list_create(MAX_QUEUE);
/* scan cache is MAX_QUEUE size (why not?) */
cache = list_create(2);
exempt = list_create(MAX_EXEMPTS);
sprintf(opsb.opmdomain, "%s", "opm.blitzed.org");
sprintf(opsb.targethost, "%s", me.uplink);
opsb.targetport = me.port;
opsb.maxbytes = 500;
opsb.timeout = 30;
opsb.timedif = 30;
opsb.open = 0;
opsb.scanned = 0;
opsb.confed = 0;
opsb.cachetime = 3600;
opsb.bantime = 86400;
snprintf(opsb.lookforstring, 512, "*** Looking up your hostname...");
snprintf(opsb.scanmsg, 512, "Your Host is being Scanned for Open Proxies");
}
void _fini() {
globops(me.name, "OPSB Module Unloaded");
};
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