/*
* main.c -- handles:
* core event handling
* signal handling
* command line arguments
* context and assert debugging
*
* $Id: main.c,v 1.118 2006-03-28 02:35:50 wcc Exp $
*/
/*
* Copyright (C) 1997 Robey Pointer
* Copyright (C) 1999 - 2006 Eggheads Development Team
*
* 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.
*/
/*
* The author (Robey Pointer) can be reached at: robey@netcom.com
* NOTE: Robey is no long working on this code, there is a discussion
* list available at eggheads@eggheads.org.
*/
#include "main.h"
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <netdb.h>
#include <setjmp.h>
#ifdef TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif
#ifdef STOP_UAC /* osf/1 complains a lot */
# include <sys/sysinfo.h>
# define UAC_NOPRINT 0x00000001 /* Don't report unaligned fixups */
#endif
#include "chan.h"
#include "modules.h"
#include "tandem.h"
#include "bg.h"
#ifndef ENABLE_STRIP
# include <sys/resource.h>
#endif
#ifdef CYGWIN_HACKS
# include <windows.h>
#endif
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE 1 /* Solaris needs this */
#endif
extern char origbotname[], userfile[], botnetnick[], tempdir[];
extern int dcc_total, conmask, cache_hit, cache_miss, max_logs, quick_logs;
extern struct dcc_t *dcc;
extern struct userrec *userlist;
extern struct chanset_t *chanset;
extern log_t *logs;
extern Tcl_Interp *interp;
extern tcl_timer_t *timer, *utimer;
extern sigjmp_buf alarmret;
time_t now;
/*
* Please use the PATCH macro instead of directly altering the version
* string from now on (it makes it much easier to maintain patches).
* Also please read the README file regarding your rights to distribute
* modified versions of this bot.
*/
char egg_version[1024] = "1.6.18";
int egg_numver = 1061800;
char notify_new[121] = ""; /* Person to send a note to for new users */
int default_flags = 0; /* Default user flags */
int default_uflags = 0; /* Default user-definied flags */
int backgrd = 1; /* Run in the background? */
int con_chan = 0; /* Foreground: constantly display channel stats? */
int term_z = 0; /* Foreground: use the terminal as a partyline? */
int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
char configfile[121] = __PREFIX__ "/etc/eggdrop.conf"; /* Default config file name */
char pid_file[120]; /* Name of the pid file */
char helpdir[121] = "help/"; /* Directory of help files */
char textdir[121] = "text/"; /* Directory for text files */
int keep_all_logs = 0; /* Never erase logfiles? */
char logfile_suffix[21] = ".%d%b%Y"; /* Format of logfile suffix */
int switch_logfiles_at = 300; /* When to switch logfiles */
time_t online_since; /* time that the bot was started */
int make_userfile = 0; /* Using bot in userfile-creation mode? */
char owner[121] = ""; /* Permanent owner(s) of the bot */
int save_users_at = 0; /* Minutes past the hour to save the userfile? */
int notify_users_at = 0; /* Minutes past the hour to notify users of notes? */
char version[81]; /* Version info (long form) */
char ver[41]; /* Version info (short form) */
char egg_xtra[2048]; /* Patch info */
int do_restart = 0; /* .restart has been called, restart ASAP */
int die_on_sighup = 0; /* Die if bot receives SIGHUP */
int die_on_sigterm = 1; /* Die if bot receives SIGTERM */
int resolve_timeout = 15; /* Hostname/address lookup timeout */
char quit_msg[1024]; /* Quit message */
/* Traffic stats */
unsigned long otraffic_irc = 0;
unsigned long otraffic_irc_today = 0;
unsigned long otraffic_bn = 0;
unsigned long otraffic_bn_today = 0;
unsigned long otraffic_dcc = 0;
unsigned long otraffic_dcc_today = 0;
unsigned long otraffic_filesys = 0;
unsigned long otraffic_filesys_today = 0;
unsigned long otraffic_trans = 0;
unsigned long otraffic_trans_today = 0;
unsigned long otraffic_unknown = 0;
unsigned long otraffic_unknown_today = 0;
unsigned long itraffic_irc = 0;
unsigned long itraffic_irc_today = 0;
unsigned long itraffic_bn = 0;
unsigned long itraffic_bn_today = 0;
unsigned long itraffic_dcc = 0;
unsigned long itraffic_dcc_today = 0;
unsigned long itraffic_trans = 0;
unsigned long itraffic_trans_today = 0;
unsigned long itraffic_unknown = 0;
unsigned long itraffic_unknown_today = 0;
#ifdef DEBUG_CONTEXT
/* Context storage for fatal crashes */
char cx_file[16][30];
char cx_note[16][256];
int cx_line[16];
int cx_ptr = 0;
#endif
#ifdef EGG_SSL_EXT
int clean_net();
#endif
void fatal(const char *s, int recoverable)
{
int i;
putlog(LOG_MISC, "*", "* %s", s);
flushlogs();
for (i = 0; i < dcc_total; i++)
if (dcc[i].sock >= 0)
killsock(dcc[i].sock);
#ifdef EGG_SSL_EXT
clean_net();
#endif
unlink(pid_file);
if (!recoverable) {
bg_send_quit(BG_ABORT);
exit(1);
}
}
int expmem_chanprog();
int expmem_users();
int expmem_misc();
int expmem_dccutil();
int expmem_botnet();
int expmem_tcl();
int expmem_tclhash();
int expmem_net();
int expmem_modules(int);
int expmem_language();
int expmem_tcldcc();
int expmem_tclmisc();
/* For mem.c : calculate memory we SHOULD be using
*/
int expected_memory(void)
{
int tot;
tot = expmem_chanprog() + expmem_users() + expmem_misc() + expmem_dccutil() +
expmem_botnet() + expmem_tcl() + expmem_tclhash() + expmem_net() +
expmem_modules(0) + expmem_language() + expmem_tcldcc() +
expmem_tclmisc();
return tot;
}
static void check_expired_dcc()
{
int i;
for (i = 0; i < dcc_total; i++)
if (dcc[i].type && dcc[i].type->timeout_val &&
((now - dcc[i].timeval) > *(dcc[i].type->timeout_val))) {
if (dcc[i].type->timeout)
dcc[i].type->timeout(i);
else if (dcc[i].type->eof)
dcc[i].type->eof(i);
else
continue;
/* Only timeout 1 socket per cycle, too risky for more */
return;
}
}
#ifdef DEBUG_CONTEXT
static int nested_debug = 0;
void write_debug()
{
int x;
char s[25];
int y;
if (nested_debug) {
/* Yoicks, if we have this there's serious trouble!
* All of these are pretty reliable, so we'll try these.
*
* NOTE: dont try and display context-notes in here, it's
* _not_ safe <cybah>
*/
x = creat("DEBUG.DEBUG", 0644);
setsock(x, SOCK_NONSOCK);
if (x >= 0) {
strncpyz(s, ctime(&now), sizeof s);
dprintf(-x, "Debug (%s) written %s\n", ver, s);
dprintf(-x, "Please report problem to bugs@eggheads.org\n");
dprintf(-x, "after a visit to http://www.eggheads.org/bugzilla/\n");
dprintf(-x, "Full Patch List: %s\n", egg_xtra);
dprintf(-x, "Context: ");
cx_ptr = cx_ptr & 15;
for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
dprintf(-x, "%s/%d,\n ", cx_file[y], cx_line[y]);
dprintf(-x, "%s/%d\n\n", cx_file[y], cx_line[y]);
killsock(x);
close(x);
}
bg_send_quit(BG_ABORT);
exit(1); /* Dont even try & tell people about, that may
* have caused the fault last time. */
} else
nested_debug = 1;
putlog(LOG_MISC, "*", "* Last context: %s/%d [%s]", cx_file[cx_ptr],
cx_line[cx_ptr], cx_note[cx_ptr][0] ? cx_note[cx_ptr] : "");
putlog(LOG_MISC, "*", "* Please REPORT this BUG!");
putlog(LOG_MISC, "*", "* Check doc/BUG-REPORT on how to do so.");
x = creat("DEBUG", 0644);
setsock(x, SOCK_NONSOCK);
if (x < 0) {
putlog(LOG_MISC, "*", "* Failed to write DEBUG");
} else {
strncpyz(s, ctime(&now), sizeof s);
dprintf(-x, "Debug (%s) written %s\n", ver, s);
dprintf(-x, "Full Patch List: %s\n", egg_xtra);
#ifdef STATIC
dprintf(-x, "STATICALLY LINKED\n");
#endif
/* info library */
dprintf(-x, "Tcl library: %s\n",
((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
interp->result : "*unknown*");
/* info tclversion/patchlevel */
dprintf(-x, "Tcl version: %s (header version %s)\n",
((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
interp->result : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
interp->result : "*unknown*", TCL_PATCH_LEVEL ? TCL_PATCH_LEVEL :
"*unknown*");
#ifdef HAVE_TCL_THREADS
dprintf(-x, "Tcl is threaded\n");
#endif
#ifdef CCFLAGS
dprintf(-x, "Compile flags: %s\n", CCFLAGS);
#endif
#ifdef LDFLAGS
dprintf(-x, "Link flags: %s\n", LDFLAGS);
#endif
#ifdef STRIPFLAGS
dprintf(-x, "Strip flags: %s\n", STRIPFLAGS);
#endif
dprintf(-x, "Context: ");
cx_ptr = cx_ptr & 15;
for (y = ((cx_ptr + 1) & 15); y != cx_ptr; y = ((y + 1) & 15))
dprintf(-x, "%s/%d, [%s]\n ", cx_file[y], cx_line[y],
(cx_note[y][0]) ? cx_note[y] : "");
dprintf(-x, "%s/%d [%s]\n\n", cx_file[cx_ptr], cx_line[cx_ptr],
(cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
tell_dcc(-x);
dprintf(-x, "\n");
debug_mem_to_dcc(-x);
killsock(x);
close(x);
putlog(LOG_MISC, "*", "* Wrote DEBUG");
}
}
#endif /* DEBUG_CONTEXT */
static void got_bus(int z)
{
#ifdef DEBUG_CONTEXT
write_debug();
#endif
fatal("BUS ERROR -- CRASHING!", 1);
#ifdef SA_RESETHAND
kill(getpid(), SIGBUS);
#else
bg_send_quit(BG_ABORT);
exit(1);
#endif
}
static void got_segv(int z)
{
#ifdef DEBUG_CONTEXT
write_debug();
#endif
fatal("SEGMENT VIOLATION -- CRASHING!", 1);
#ifdef SA_RESETHAND
kill(getpid(), SIGSEGV);
#else
bg_send_quit(BG_ABORT);
exit(1);
#endif
}
static void got_fpe(int z)
{
#ifdef DEBUG_CONTEXT
write_debug();
#endif
fatal("FLOATING POINT ERROR -- CRASHING!", 0);
}
static void got_term(int z)
{
write_userfile(-1);
check_tcl_event("sigterm");
if (die_on_sigterm) {
botnet_send_chat(-1, botnetnick, "ACK, I've been terminated!");
fatal("TERMINATE SIGNAL -- SIGNING OFF", 0);
} else
putlog(LOG_MISC, "*", "RECEIVED TERMINATE SIGNAL (IGNORING)");
}
static void got_quit(int z)
{
check_tcl_event("sigquit");
putlog(LOG_MISC, "*", "RECEIVED QUIT SIGNAL (IGNORING)");
return;
}
static void got_hup(int z)
{
write_userfile(-1);
check_tcl_event("sighup");
if (die_on_sighup) {
fatal("HANGUP SIGNAL -- SIGNING OFF", 0);
} else
putlog(LOG_MISC, "*", "Received HUP signal: rehashing...");
do_restart = -2;
return;
}
/* A call to resolver (gethostbyname, etc) timed out
*/
static void got_alarm(int z)
{
siglongjmp(alarmret, 1);
/* -Never reached- */
}
/* Got ILL signal -- log context and continue
*/
static void got_ill(int z)
{
check_tcl_event("sigill");
#ifdef DEBUG_CONTEXT
putlog(LOG_MISC, "*", "* Context: %s/%d [%s]", cx_file[cx_ptr],
cx_line[cx_ptr], (cx_note[cx_ptr][0]) ? cx_note[cx_ptr] : "");
#endif
}
#ifdef DEBUG_CONTEXT
/* Context */
void eggContext(const char *file, int line, const char *module)
{
char x[31], *p;
p = strrchr(file, '/');
if (!module) {
strncpyz(x, p ? p + 1 : file, sizeof x);
} else
egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
cx_ptr = ((cx_ptr + 1) & 15);
strcpy(cx_file[cx_ptr], x);
cx_line[cx_ptr] = line;
cx_note[cx_ptr][0] = 0;
}
/* Called from the ContextNote macro.
*/
void eggContextNote(const char *file, int line, const char *module,
const char *note)
{
char x[31], *p;
p = strrchr(file, '/');
if (!module)
strncpyz(x, p ? p + 1 : file, sizeof x);
else
egg_snprintf(x, 31, "%s:%s", module, p ? p + 1 : file);
cx_ptr = ((cx_ptr + 1) & 15);
strcpy(cx_file[cx_ptr], x);
cx_line[cx_ptr] = line;
strncpyz(cx_note[cx_ptr], note, sizeof cx_note[cx_ptr]);
}
#endif /* DEBUG_CONTEXT */
#ifdef DEBUG_ASSERT
/* Called from the Assert macro.
*/
void eggAssert(const char *file, int line, const char *module)
{
#ifdef DEBUG_CONTEXT
write_debug();
#endif
if (!module)
putlog(LOG_MISC, "*", "* In file %s, line %u", file, line);
else
putlog(LOG_MISC, "*", "* In file %s:%s, line %u", module, file, line);
fatal("ASSERT FAILED -- CRASHING!", 1);
}
#endif
static void do_arg(char *s)
{
char x[512], *z = x;
int i;
if (s[0] == '-')
for (i = 1; i < strlen(s); i++) {
switch (s[i]) {
case 'n':
backgrd = 0;
break;
case 'c':
con_chan = 1;
term_z = 0;
break;
case 't':
con_chan = 0;
term_z = 1;
break;
case 'm':
make_userfile = 1;
break;
case 'v':
strncpyz(x, egg_version, sizeof x);
newsplit(&z);
newsplit(&z);
printf("%s\n", version);
if (z[0])
printf(" (patches: %s)\n", z);
bg_send_quit(BG_ABORT);
exit(0);
break; /* this should never be reached */
case 'h':
printf("\n%s\n\n", version);
printf(EGG_USAGE);
printf("\n");
bg_send_quit(BG_ABORT);
exit(0);
break; /* this should never be reached */
}
} else
strncpyz(configfile, s, sizeof configfile);
}
void backup_userfile(void)
{
char s[125];
putlog(LOG_MISC, "*", USERF_BACKUP);
egg_snprintf(s, sizeof s, "%s~bak", userfile);
copyfile(userfile, s);
}
/* Timer info */
static int lastmin = 99;
static time_t then;
static struct tm nowtm;
/* Called once a second.
*
* Note: Try to not put any Context lines in here (guppy 21Mar2000).
*/
static void core_secondly()
{
static int cnt = 0;
int miltime;
do_check_timers(&utimer); /* Secondly timers */
cnt++;
if (cnt >= 10) { /* Every 10 seconds */
cnt = 0;
check_expired_dcc();
if (con_chan && !backgrd) {
dprintf(DP_STDOUT, "\033[2J\033[1;1H");
tell_verbose_status(DP_STDOUT);
do_module_report(DP_STDOUT, 0, "server");
do_module_report(DP_STDOUT, 0, "channels");
tell_mem_status_dcc(DP_STDOUT);
}
}
egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
if (nowtm.tm_min != lastmin) {
int i = 0;
/* Once a minute */
lastmin = (lastmin + 1) % 60;
call_hook(HOOK_MINUTELY);
check_expired_ignores();
autolink_cycle(NULL); /* Attempt autolinks */
/* In case for some reason more than 1 min has passed: */
while (nowtm.tm_min != lastmin) {
/* Timer drift, dammit */
debug2("timer: drift (lastmin=%d, now=%d)", lastmin, nowtm.tm_min);
i++;
lastmin = (lastmin + 1) % 60;
call_hook(HOOK_MINUTELY);
}
if (i > 1)
putlog(LOG_MISC, "*", "(!) timer drift -- spun %d minutes", i);
miltime = (nowtm.tm_hour * 100) + (nowtm.tm_min);
if (((int) (nowtm.tm_min / 5) * 5) == (nowtm.tm_min)) { /* 5 min */
call_hook(HOOK_5MINUTELY);
check_botnet_pings();
if (!quick_logs) {
flushlogs();
check_logsize();
}
if (!miltime) { /* At midnight */
char s[25];
int j;
strncpyz(s, ctime(&now), sizeof s);
putlog(LOG_ALL, "*", "--- %.11s%s", s, s + 20);
call_hook(HOOK_BACKUP);
for (j = 0; j < max_logs; j++) {
if (logs[j].filename != NULL && logs[j].f != NULL) {
fclose(logs[j].f);
logs[j].f = NULL;
}
}
}
}
if (nowtm.tm_min == notify_users_at)
call_hook(HOOK_HOURLY);
/* These no longer need checking since they are all check vs minutely
* settings and we only get this far on the minute.
*/
if (miltime == switch_logfiles_at) {
call_hook(HOOK_DAILY);
if (!keep_all_logs) {
putlog(LOG_MISC, "*", MISC_LOGSWITCH);
for (i = 0; i < max_logs; i++)
if (logs[i].filename) {
char s[1024];
if (logs[i].f) {
fclose(logs[i].f);
logs[i].f = NULL;
}
egg_snprintf(s, sizeof s, "%s.yesterday", logs[i].filename);
unlink(s);
movefile(logs[i].filename, s);
}
}
}
}
}
static void core_minutely()
{
check_tcl_time(&nowtm);
do_check_timers(&timer);
if (quick_logs != 0) {
flushlogs();
check_logsize();
}
}
static void core_hourly()
{
write_userfile(-1);
}
static void event_rehash()
{
check_tcl_event("rehash");
}
static void event_prerehash()
{
check_tcl_event("prerehash");
}
static void event_save()
{
check_tcl_event("save");
}
static void event_logfile()
{
check_tcl_event("logfile");
}
static void event_resettraffic()
{
otraffic_irc += otraffic_irc_today;
itraffic_irc += itraffic_irc_today;
otraffic_bn += otraffic_bn_today;
itraffic_bn += itraffic_bn_today;
otraffic_dcc += otraffic_dcc_today;
itraffic_dcc += itraffic_dcc_today;
otraffic_unknown += otraffic_unknown_today;
itraffic_unknown += itraffic_unknown_today;
otraffic_trans += otraffic_trans_today;
itraffic_trans += itraffic_trans_today;
otraffic_irc_today = otraffic_bn_today = 0;
otraffic_dcc_today = otraffic_unknown_today = 0;
itraffic_irc_today = itraffic_bn_today = 0;
itraffic_dcc_today = itraffic_unknown_today = 0;
itraffic_trans_today = otraffic_trans_today = 0;
}
static void event_loaded()
{
check_tcl_event("loaded");
}
void kill_tcl();
extern module_entry *module_list;
void restart_chons();
#ifdef STATIC
void check_static(char *, char *(*)());
#include "mod/static.h"
#endif
int init_mem();
int init_dcc_max();
int init_userent();
int init_misc();
int init_bots();
int init_net();
int init_modules();
int init_tcl(int, char **);
int init_language(int);
void patch(const char *str)
{
char *p = strchr(egg_version, '+');
if (!p)
p = &egg_version[strlen(egg_version)];
sprintf(p, "+%s", str);
egg_numver++;
sprintf(&egg_xtra[strlen(egg_xtra)], " %s", str);
}
static inline void garbage_collect(void)
{
static u_8bit_t run_cnt = 0;
if (run_cnt == 3)
garbage_collect_tclhash();
else
run_cnt++;
}
int main(int argc, char **argv)
{
int xx, i;
char buf[520], s[25];
FILE *f;
struct sigaction sv;
struct chanset_t *chan;
#ifndef ENABLE_STRIP
/* Make sure it can write core, if you make debug. Else it's pretty
* useless (dw)
*/
{
struct rlimit cdlim;
cdlim.rlim_cur = RLIM_INFINITY;
cdlim.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &cdlim);
}
#endif
chdir(__PREFIX__ "/share/eggdrop");
/* Initialise context list */
for (i = 0; i < 16; i++)
Context;
#include "patch.h"
/* Version info! */
egg_snprintf(ver, sizeof ver, "eggdrop v%s", egg_version);
egg_snprintf(version, sizeof version,
"Eggdrop v%s (C) 1997 Robey Pointer (C) 2006 Eggheads",
egg_version);
/* Now add on the patchlevel (for Tcl) */
sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
strcat(egg_version, egg_xtra);
#ifdef STOP_UAC
{
int nvpair[2];
nvpair[0] = SSIN_UACPROC;
nvpair[1] = UAC_NOPRINT;
setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
}
#endif
/* Set up error traps: */
sv.sa_handler = got_bus;
sigemptyset(&sv.sa_mask);
#ifdef SA_RESETHAND
sv.sa_flags = SA_RESETHAND;
#else
sv.sa_flags = 0;
#endif
sigaction(SIGBUS, &sv, NULL);
sv.sa_handler = got_segv;
sigaction(SIGSEGV, &sv, NULL);
#ifdef SA_RESETHAND
sv.sa_flags = 0;
#endif
sv.sa_handler = got_fpe;
sigaction(SIGFPE, &sv, NULL);
sv.sa_handler = got_term;
sigaction(SIGTERM, &sv, NULL);
sv.sa_handler = got_hup;
sigaction(SIGHUP, &sv, NULL);
sv.sa_handler = got_quit;
sigaction(SIGQUIT, &sv, NULL);
sv.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &sv, NULL);
sv.sa_handler = got_ill;
sigaction(SIGILL, &sv, NULL);
sv.sa_handler = got_alarm;
sigaction(SIGALRM, &sv, NULL);
/* Initialize variables and stuff */
now = time(NULL);
chanset = NULL;
egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
lastmin = nowtm.tm_min;
srandom((unsigned int) (now % (getpid() + getppid())));
init_mem();
init_language(1);
if (argc > 1)
for (i = 1; i < argc; i++)
do_arg(argv[i]);
printf("\n%s\n", version);
/* Don't allow eggdrop to run as root */
if (((int) getuid() == 0) || ((int) geteuid() == 0))
fatal("ERROR: Eggdrop will not run as root!", 0);
init_dcc_max();
init_userent();
init_misc();
init_bots();
init_net();
init_modules();
if (backgrd)
bg_prepare_split();
init_tcl(argc, argv);
init_language(0);
#ifdef STATIC
link_statics();
#endif
strncpyz(s, ctime(&now), sizeof s);
strcpy(&s[11], &s[20]);
putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
chanprog();
if (!encrypt_pass) {
printf(MOD_NOCRYPT);
bg_send_quit(BG_ABORT);
exit(1);
}
i = 0;
for (chan = chanset; chan; chan = chan->next)
i++;
putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.",
botnetnick, i, count_users(userlist));
cache_miss = 0;
cache_hit = 0;
if (!pid_file[0])
egg_snprintf(pid_file, sizeof pid_file, "%.100s/pid.%.32s", tempdir, botnetnick);
/* Check for pre-existing eggdrop! */
f = fopen(pid_file, "r");
if (f != NULL) {
fgets(s, 10, f);
xx = atoi(s);
kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
* is used */
if (errno != ESRCH) {
printf(EGG_RUNNING1, botnetnick);
printf(EGG_RUNNING2, pid_file);
bg_send_quit(BG_ABORT);
exit(1);
}
}
/* Move into background? */
if (backgrd) {
#ifndef CYGWIN_HACKS
bg_do_split();
} else { /* !backgrd */
#endif
xx = getpid();
if (xx != 0) {
FILE *fp;
/* Write pid to file */
unlink(pid_file);
fp = fopen(pid_file, "w");
if (fp != NULL) {
fprintf(fp, "%u\n", xx);
if (fflush(fp)) {
/* Let the bot live since this doesn't appear to be a botchk */
printf(EGG_NOWRITE, pid_file);
fclose(fp);
unlink(pid_file);
} else
fclose(fp);
} else
printf(EGG_NOWRITE, pid_file);
#ifdef CYGWIN_HACKS
printf("Launched into the background (pid: %d)\n\n", xx);
#endif
}
}
use_stderr = 0; /* Stop writing to stderr now */
if (backgrd) {
/* Ok, try to disassociate from controlling terminal (finger cross) */
#if defined(HAVE_SETPGID) && !defined(CYGWIN_HACKS)
setpgid(0, 0);
#endif
/* Tcl wants the stdin, stdout and stderr file handles kept open. */
freopen("/dev/null", "r", stdin);
freopen("/dev/null", "w", stdout);
freopen("/dev/null", "w", stderr);
#ifdef CYGWIN_HACKS
FreeConsole();
#endif
}
/* Terminal emulating dcc chat */
if (!backgrd && term_z) {
int n = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
dcc[n].addr = iptolong(getmyip());
dcc[n].sock = STDOUT;
dcc[n].timeval = now;
dcc[n].u.chat->con_flags = conmask;
dcc[n].u.chat->strip_flags = STRIP_ALL;
dcc[n].status = STAT_ECHO;
strcpy(dcc[n].nick, "HQ");
strcpy(dcc[n].host, "llama@console");
/* HACK: Workaround not to pass literal "HQ" as a non-const arg */
dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
/* Make sure there's an innocuous HQ user if needed */
if (!dcc[n].user) {
userlist = adduser(userlist, dcc[n].nick, "none", "-", USER_PARTY);
dcc[n].user = get_user_by_handle(userlist, dcc[n].nick);
}
setsock(STDOUT, 0); /* Entry in net table */
dprintf(n, "\n### ENTERING DCC CHAT SIMULATION ###\n\n");
dcc_chatter(n);
}
then = now;
online_since = now;
autolink_cycle(NULL); /* Hurry and connect to tandem bots */
add_help_reference("cmds1.help");
add_help_reference("cmds2.help");
add_help_reference("core.help");
add_hook(HOOK_SECONDLY, (Function) core_secondly);
add_hook(HOOK_MINUTELY, (Function) core_minutely);
add_hook(HOOK_HOURLY, (Function) core_hourly);
add_hook(HOOK_REHASH, (Function) event_rehash);
add_hook(HOOK_PRE_REHASH, (Function) event_prerehash);
add_hook(HOOK_USERFILE, (Function) event_save);
add_hook(HOOK_BACKUP, (Function) backup_userfile);
add_hook(HOOK_DAILY, (Function) event_logfile);
add_hook(HOOK_DAILY, (Function) event_resettraffic);
add_hook(HOOK_LOADED, (Function) event_loaded);
call_hook(HOOK_LOADED);
debug0("main: entering loop");
while (1) {
int socket_cleanup = 0;
#ifdef USE_TCL_EVENTS
/* Process a single tcl event */
Tcl_DoOneEvent(TCL_ALL_EVENTS | TCL_DONT_WAIT);
#endif /* USE_TCL_EVENTS */
/* Lets move some of this here, reducing the numer of actual
* calls to periodic_timers
*/
now = time(NULL);
random(); /* Woop, lets really jumble things */
if (now != then) { /* Once a second */
call_hook(HOOK_SECONDLY);
then = now;
}
/* Only do this every so often. */
if (!socket_cleanup) {
socket_cleanup = 5;
/* Remove dead dcc entries. */
dcc_remove_lost();
/* Check for server or dcc activity. */
dequeue_sockets();
} else
socket_cleanup--;
/* Free unused structures. */
garbage_collect();
xx = sockgets(buf, &i);
if (xx >= 0) { /* Non-error */
int idx;
for (idx = 0; idx < dcc_total; idx++)
if (dcc[idx].sock == xx) {
if (dcc[idx].type && dcc[idx].type->activity) {
/* Traffic stats */
if (dcc[idx].type->name) {
if (!strncmp(dcc[idx].type->name, "BOT", 3))
itraffic_bn_today += strlen(buf) + 1;
else if (!strcmp(dcc[idx].type->name, "SERVER"))
itraffic_irc_today += strlen(buf) + 1;
else if (!strncmp(dcc[idx].type->name, "CHAT", 4))
itraffic_dcc_today += strlen(buf) + 1;
else if (!strncmp(dcc[idx].type->name, "FILES", 5))
itraffic_dcc_today += strlen(buf) + 1;
else if (!strcmp(dcc[idx].type->name, "SEND"))
itraffic_trans_today += strlen(buf) + 1;
else if (!strncmp(dcc[idx].type->name, "GET", 3))
itraffic_trans_today += strlen(buf) + 1;
else
itraffic_unknown_today += strlen(buf) + 1;
}
dcc[idx].type->activity(idx, buf, i);
} else
putlog(LOG_MISC, "*",
"!!! untrapped dcc activity: type %s, sock %d",
dcc[idx].type->name, dcc[idx].sock);
break;
}
} else if (xx == -1) { /* EOF from someone */
int idx;
if (i == STDOUT && !backgrd)
fatal("END OF FILE ON TERMINAL", 0);
for (idx = 0; idx < dcc_total; idx++)
if (dcc[idx].sock == i) {
if (dcc[idx].type && dcc[idx].type->eof)
dcc[idx].type->eof(idx);
else {
putlog(LOG_MISC, "*",
"*** ATTENTION: DEAD SOCKET (%d) OF TYPE %s UNTRAPPED",
i, dcc[idx].type ? dcc[idx].type->name : "*UNKNOWN*");
killsock(i);
lostdcc(idx);
}
idx = dcc_total + 1;
}
if (idx == dcc_total) {
putlog(LOG_MISC, "*",
"(@) EOF socket %d, not a dcc socket, not anything.", i);
close(i);
killsock(i);
}
} else if (xx == -2 && errno != EINTR) { /* select() error */
putlog(LOG_MISC, "*", "* Socket error #%d; recovering.", errno);
for (i = 0; i < dcc_total; i++) {
if ((fcntl(dcc[i].sock, F_GETFD, 0) == -1) && (errno == EBADF)) {
putlog(LOG_MISC, "*",
"DCC socket %d (type %d, name '%s') expired -- pfft",
dcc[i].sock, dcc[i].type, dcc[i].nick);
killsock(dcc[i].sock);
lostdcc(i);
i--;
}
}
} else if (xx == -3) {
call_hook(HOOK_IDLE);
socket_cleanup = 0; /* If we've been idle, cleanup & flush */
}
if (do_restart) {
if (do_restart == -2)
rehash();
else {
/* Unload as many modules as possible */
int f = 1;
module_entry *p;
Function startfunc;
char name[256];
/* oops, I guess we should call this event before tcl is restarted */
check_tcl_event("prerestart");
while (f) {
f = 0;
for (p = module_list; p != NULL; p = p->next) {
dependancy *d = dependancy_list;
int ok = 1;
while (ok && d) {
if (d->needed == p)
ok = 0;
d = d->next;
}
if (ok) {
strcpy(name, p->name);
if (module_unload(name, botnetnick) == NULL) {
f = 1;
break;
}
}
}
}
/* Make sure we don't have any modules left hanging around other than
* "eggdrop" and the two that are supposed to be.
*/
for (f = 0, p = module_list; p; p = p->next) {
if (strcmp(p->name, "eggdrop") && strcmp(p->name, "encryption") &&
strcmp(p->name, "uptime")) {
f++;
}
}
if (f != 0) {
putlog(LOG_MISC, "*", MOD_STAGNANT);
}
flushlogs();
kill_tcl();
init_tcl(argc, argv);
init_language(0);
/* this resets our modules which we didn't unload (encryption and uptime) */
for (p = module_list; p; p = p->next) {
if (p->funcs) {
startfunc = p->funcs[MODCALL_START];
startfunc(NULL);
}
}
rehash();
restart_chons();
call_hook(HOOK_LOADED);
}
do_restart = 0;
}
}
}
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