Your IP : 216.73.216.224
/*
* main.c -- handles:
* core event handling
* signal handling
* command line arguments
* context and assert debugging
*/
/*
* Copyright (C) 1997 Robey Pointer
* Copyright (C) 1999 - 2019 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.
*/
/* We need config.h for CYGWIN_HACKS, but windows.h must be included before
* eggdrop headers, because the malloc/free/Context macros break the inclusion.
* The SSL undefs are a workaround for bug #2182 in openssl with msys/mingw.
*/
#include <config.h>
#ifdef CYGWIN_HACKS
# include <windows.h>
# undef X509_NAME
# undef X509_EXTENSIONS
# undef X509_CERT_PAIR
# undef PKCS7_ISSUER_AND_SERIAL
# undef PKCS7_SIGNER_INFO
# undef OCSP_REQUEST
# undef OCSP_RESPONSE
#endif
#include "main.h"
#include <errno.h>
#include <fcntl.h>
#include <resolv.h>
#include <setjmp.h>
#include <signal.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 "version.h"
#include "chan.h"
#include "modules.h"
#include "tandem.h"
#include "bg.h"
#ifdef DEBUG /* For debug compile */
# include <sys/resource.h> /* setrlimit() */
#endif
#ifdef HAVE_GETRANDOM
# include <sys/random.h>
#endif
#ifndef _POSIX_SOURCE
# define _POSIX_SOURCE 1 /* Solaris needs this */
#endif
extern char origbotname[], botnetnick[];
extern char userfile[121]; /* 121 = sizeof userfile from users.c */
extern int dcc_total, conmask, cache_hit, cache_miss, max_logs, quick_logs,
quiet_save;
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;
static int argc;
static char **argv;
/*
* 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];
int egg_numver = EGG_NUMVER;
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 = -1; /* Foreground: use the terminal as a partyline? */
int use_stderr = 1; /* Send stuff to stderr instead of logfiles? */
char configfile[121] = "eggdrop.conf"; /* Default config file name */
char pid_file[121]; /* 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? */
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? */
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) */
volatile sig_atomic_t do_restart = 0; /* .restart has been called, restart ASAP */
int resolve_timeout = RES_TIMEOUT; /* 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 TLS
int ssl_cleanup();
#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 TLS
ssl_cleanup();
#endif
unlink(pid_file);
if (recoverable != 1) {
bg_send_quit(BG_ABORT);
exit(!recoverable);
}
}
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();
int expmem_dns();
#ifdef TLS
int expmem_tls();
#endif
/* 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() + expmem_dns();
#ifdef TLS
tot += expmem_tls();
#endif
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;
}
}
#ifndef DEBUG_CONTEXT
#define write_debug() do {} while (0)
#else
static int nested_debug = 0;
static 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: don't try and display context-notes in here, it's
* _not_ safe <cybah>
*/
x = creat("DEBUG.DEBUG", 0644);
if (x >= 0) {
setsock(x, SOCK_NONSOCK);
strlcpy(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");
#ifdef EGG_PATCH
dprintf(-x, "Patch level: %s\n", EGG_PATCH);
#else
dprintf(-x, "Patch level: %s\n", "stable");
#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,\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 {
strlcpy(s, ctime(&now), sizeof s);
dprintf(-x, "Debug (%s) written %s\n", ver, s);
#ifdef EGG_PATCH
dprintf(-x, "Patch level: %s\n", EGG_PATCH);
#else
dprintf(-x, "Patch level: %s\n", "stable");
#endif
#ifdef STATIC
dprintf(-x, "STATICALLY LINKED\n");
#endif
/* info library */
dprintf(-x, "Tcl library: %s\n",
((interp) && (Tcl_Eval(interp, "info library") == TCL_OK)) ?
tcl_resultstring() : "*unknown*");
/* info tclversion/patchlevel */
dprintf(-x, "Tcl version: %s (header version %s)\n",
((interp) && (Tcl_Eval(interp, "info patchlevel") == TCL_OK)) ?
tcl_resultstring() : (Tcl_Eval(interp, "info tclversion") == TCL_OK) ?
tcl_resultstring() : "*unknown*", TCL_PATCH_LEVEL);
if (tcl_threaded())
dprintf(-x, "Tcl is threaded\n");
#ifdef IPV6
dprintf(-x, "Compiled with IPv6 support\n");
#else
dprintf(-x, "Compiled without IPv6 support\n");
#endif
#ifdef TLS
dprintf(-x, "Compiled with TLS support\n");
#else
dprintf(-x, "Compiled without TLS support\n");
#endif
if (!strcmp(EGG_AC_ARGS, "")) {
dprintf(-x, "Configure flags: none\n");
} else {
dprintf(-x, "Configure flags: %s\n", EGG_AC_ARGS);
}
#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)
{
write_debug();
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)
{
write_debug();
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)
{
write_debug();
fatal("FLOATING POINT ERROR -- CRASHING!", 0);
}
static void got_term(int z)
{
/* Now we die by default on sigterm, but scripts have the chance to
* catch the event themselves and cancel shutdown by returning 1
*/
if (check_tcl_signal("sigterm"))
return;
kill_bot("ACK, I've been terminated!", "TERMINATE SIGNAL -- SIGNING OFF");
}
static void got_quit(int z)
{
if (check_tcl_signal("sigquit"))
return;
putlog(LOG_MISC, "*", "Received QUIT signal: restarting...");
do_restart = -1;
return;
}
static void got_hup(int z)
{
write_userfile(-1);
if (check_tcl_signal("sighup"))
return;
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_signal("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
/* Called from the Context macro.
*/
void eggContext(const char *file, int line, const char *module)
{
char x[31], *p;
p = strrchr(file, '/');
if (!module) {
strlcpy(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)
strlcpy(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;
strlcpy(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)
{
write_debug();
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 show_ver() {
char x[512], *z = x;
strlcpy(x, egg_version, sizeof x);
newsplit(&z);
newsplit(&z);
printf("%s\n", version);
if (z[0]) {
printf(" (patches: %s)\n", z);
}
if (!strcmp(EGG_AC_ARGS, "")) {
printf("Configure flags: none\n");
} else {
printf("Configure flags: %s\n", EGG_AC_ARGS);
}
printf("Compiled with: ");
#ifdef IPV6
printf("IPv6, ");
#endif
#ifdef TLS
printf("TLS, ");
#endif
printf("handlen=%d\n", HANDLEN);
bg_send_quit(BG_ABORT);
}
/* Hard coded text because config file isn't loaded yet,
meaning other languages can't be loaded yet.
English (or an error) is the only possible option.
*/
static void show_help() {
printf("\n%s\n\n", version);
printf("Usage: %s [options] [config-file]\n\n"
"Options:\n"
"-n Don't background; send all log entries to console.\n"
"-nc Don't background; display channel stats every 10 seconds.\n"
"-nt Don't background; use terminal to simulate DCC chat.\n"
"-m Create userfile.\n"
"-h Show this help and exit.\n"
"-v Show version info and exit.\n\n", argv[0]);
bg_send_quit(BG_ABORT);
}
static void do_arg()
{
int option = 0;
unsigned char cliflags = 0;
#define CLI_V 1 << 0
#define CLI_M 1 << 1
#define CLI_T 1 << 2
#define CLI_C 1 << 3
#define CLI_N 1 << 4
#define CLI_H 1 << 5
#define CLI_BAD_FLAG 1 << 6
while ((option = getopt(argc, argv, "hnctmv")) != -1) {
switch (option) {
case 'n':
cliflags |= CLI_N;
backgrd = 0;
break;
case 'c':
cliflags |= CLI_C;
con_chan = 1;
term_z = -1;
break;
case 't':
cliflags |= CLI_T;
con_chan = 0;
term_z = 0;
break;
case 'm':
cliflags |= CLI_M;
make_userfile = 1;
break;
case 'v':
cliflags |= CLI_V;
break;
case 'h':
cliflags |= CLI_H;
break;
default:
cliflags |= CLI_BAD_FLAG;
break;
}
}
if (cliflags & CLI_H) {
show_help();
exit(0);
} else if (cliflags & CLI_BAD_FLAG) {
show_help();
exit(1);
} else if (cliflags & CLI_V) {
show_ver();
exit(0);
} else if (!(cliflags & CLI_N) && ((cliflags & CLI_C) || (cliflags & CLI_T))) {
printf("\n%s\n", version);
printf("ERROR: The -n flag is required when using the -c or -t flags. Exiting...\n\n");
exit(1);
} else if (argc > (optind + 1)) {
printf("\n");
printf("WARNING: More than one config file value detected\n");
printf(" Using %s as config file\n", argv[optind]);
}
if (argc > optind) {
strlcpy(configfile, argv[optind], sizeof configfile);
}
}
void backup_userfile(void)
{
char s[sizeof userfile + 4];
if (quiet_save < 2)
putlog(LOG_MISC, "*", USERF_BACKUP);
egg_snprintf(s, sizeof s, "%s~bak", userfile);
copyfile(userfile, s);
}
/* Timer info */
static time_t lastmin;
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 = 10; /* Don't wait the first 10 seconds to display */
int miltime;
time_t nowmins;
int i;
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);
}
}
nowmins = time(NULL) / 60;
if (nowmins > lastmin) {
memcpy(&nowtm, localtime(&now), sizeof(struct tm));
i = 0;
/* Once a minute */
++lastmin;
call_hook(HOOK_MINUTELY);
check_expired_ignores();
autolink_cycle(NULL); /* Attempt autolinks */
/* In case for some reason more than 1 min has passed: */
while (nowmins != lastmin) {
/* Timer drift, dammit */
debug2("timer: drift (lastmin=%d, nowmins=%d)", lastmin, nowmins);
i++;
++lastmin;
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;
strlcpy(s, ctime(&now), sizeof s);
if (quiet_save < 3)
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) {
if (quiet_save < 3)
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_and_cron(&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_threaddata(int);
int init_mem();
int init_userent();
int init_misc();
int init_bots();
int init_modules();
int init_tcl(int, char **);
int init_language(int);
#ifdef TLS
int ssl_init();
#endif
static void garbage_collect(void)
{
static uint8_t run_cnt = 0;
if (run_cnt == 3)
garbage_collect_tclhash();
else
run_cnt++;
}
int mainloop(int toplevel)
{
static int socket_cleanup = 0;
int xx, i, eggbusy = 1, tclbusy = 0;
char buf[520];
/* Lets move some of this here, reducing the number of actual
* calls to periodic_timers
*/
now = time(NULL);
/* If we want to restart, we have to unwind to the toplevel.
* Tcl will Panic if we kill the interp with Tcl_Eval in progress.
* This is done by returning -1 in tickle_WaitForEvent.
*/
if (do_restart && do_restart != -2 && !toplevel)
return -1;
/* Once a second */
if (now != then) {
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 (!strcmp(dcc[idx].type->name, "FORK_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 */
eggbusy = 0;
} else if (xx == -5) {
eggbusy = 0;
tclbusy = 1;
}
if (do_restart) {
if (do_restart == -2)
rehash();
else if (!toplevel)
return -1; /* Unwind to toplevel before restarting */
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) {
strlcpy(name, p->name, sizeof 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();
#ifdef TLS
ssl_cleanup();
ssl_init();
#endif
restart_chons();
call_hook(HOOK_LOADED);
}
eggbusy = 1;
do_restart = 0;
}
if (!eggbusy) {
/* Process all pending tcl events */
# ifdef REPLACE_NOTIFIER
if (Tcl_ServiceAll())
tclbusy = 1;
# else
while (Tcl_DoOneEvent(TCL_DONT_WAIT | TCL_ALL_EVENTS))
tclbusy = 1;
# endif /* REPLACE_NOTIFIER */
}
return (eggbusy || tclbusy);
}
static void init_random(void) {
unsigned int seed;
#ifdef HAVE_GETRANDOM
if (getrandom(&seed, sizeof(seed), 0) != sizeof(seed)) {
if (errno != ENOSYS) {
fatal("ERROR: getrandom()\n", 0);
} else {
/* getrandom() is available in header but syscall is not!
* This can happen with glibc>=2.25 and linux<3.17
*/
#endif
struct timeval tp;
gettimeofday(&tp, NULL);
seed = (tp.tv_sec * tp.tv_usec) ^ getpid();
#ifdef HAVE_GETRANDOM
}
}
#endif
srandom(seed);
}
int main(int arg_c, char **arg_v)
{
int i, xx;
char s[25];
FILE *f;
struct sigaction sv;
struct chanset_t *chan;
#ifdef DEBUG
struct rlimit cdlim;
#endif
#ifdef STOP_UAC
int nvpair[2];
#endif
/* Make sure it can write core, if you make debug. Else it's pretty
* useless (dw)
*
* Only allow unlimited size core files when compiled with DEBUG defined.
* This is not a good idea for normal builds -- in these cases, use the
* default system resource limits instead.
*/
#ifdef DEBUG
cdlim.rlim_cur = RLIM_INFINITY;
cdlim.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &cdlim);
#endif
#ifdef DEBUG_CONTEXT
/* Initialise context list */
for (i = 0; i < 16; i++)
Context;
#endif
argc = arg_c;
argv = arg_v;
/* Version info! */
#ifdef EGG_PATCH
egg_snprintf(egg_version, sizeof egg_version, "%s+%s %u", EGG_STRINGVER, EGG_PATCH, egg_numver);
egg_snprintf(ver, sizeof ver, "eggdrop v%s+%s", EGG_STRINGVER, EGG_PATCH);
egg_snprintf(version, sizeof version,
"Eggdrop v%s+%s (C) 1997 Robey Pointer (C) 2010-2018 Eggheads",
EGG_STRINGVER, EGG_PATCH);
#else
egg_snprintf(egg_version, sizeof egg_version, "%s %u", EGG_STRINGVER, egg_numver);
egg_snprintf(ver, sizeof ver, "eggdrop v%s", EGG_STRINGVER);
egg_snprintf(version, sizeof version,
"Eggdrop v%s (C) 1997 Robey Pointer (C) 2010-2019 Eggheads",
EGG_STRINGVER);
#endif
/* For OSF/1 */
#ifdef STOP_UAC
/* Don't print "unaligned access fixup" warning to the user */
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;
lastmin = now / 60;
init_random();
init_mem();
if (argc > 1)
do_arg();
init_language(1);
printf("\n%s\n", version);
#ifndef CYGWIN_HACKS
/* Don't allow eggdrop to run as root
* This check isn't useful under cygwin and has been
* reported to cause trouble in some situations.
*/
if (((int) getuid() == 0) || ((int) geteuid() == 0))
fatal("ERROR: Eggdrop will not run as root!", 0);
#endif
#ifndef REPLACE_NOTIFIER
init_threaddata(1);
#endif
init_userent();
init_misc();
init_bots();
init_modules();
if (backgrd)
bg_prepare_split();
init_tcl(argc, argv);
init_language(0);
#ifdef STATIC
link_statics();
#endif
strlcpy(s, ctime(&now), sizeof s);
memmove(&s[11], &s[20], strlen(&s[20])+1);
putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
chanprog();
if (!encrypt_pass) {
printf("%s", 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));
#ifdef TLS
ssl_init();
#endif
cache_miss = 0;
cache_hit = 0;
if (!pid_file[0])
egg_snprintf(pid_file, sizeof pid_file, "pid.%s", botnetnick);
/* Check for pre-existing eggdrop! */
f = fopen(pid_file, "r");
if (f != NULL) {
if (fgets(s, 10, f) != NULL) {
xx = atoi(s);
i = kill(xx, SIGCHLD); /* Meaningless kill to determine if pid
* is used */
if (i == 0 || errno != ESRCH) {
printf(EGG_RUNNING1, botnetnick);
printf(EGG_RUNNING2, pid_file);
bg_send_quit(BG_ABORT);
exit(1);
}
} else {
printf("Error checking for existing Eggdrop process.\n");
}
fclose(f);
}
/* Move into background? */
if (backgrd) {
bg_do_split();
} else { /* !backgrd */
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);
}
}
use_stderr = 0; /* Stop writing to stderr now */
if (backgrd) {
/* Ok, try to disassociate from controlling terminal (finger cross) */
#ifdef HAVE_SETPGID
setpgid(0, 0);
#endif
/* Tcl wants the stdin, stdout and stderr file handles kept open. */
if (freopen("/dev/null", "r", stdin) == NULL) {
putlog(LOG_MISC, "*", "Error renaming stdin file handle: %s", strerror(errno));
}
if (freopen("/dev/null", "w", stdout) == NULL) {
putlog(LOG_MISC, "*", "Error renaming stdout file handle: %s", strerror(errno));
}
if (freopen("/dev/null", "w", stderr) == NULL) {
putlog(LOG_MISC, "*", "Error renaming stderr file handle: %s", strerror(errno));
}
#ifdef CYGWIN_HACKS
FreeConsole();
#endif
}
/* Terminal emulating dcc chat */
if (!backgrd && term_z >= 0) {
/* reuse term_z as glob var to pass it's index in the dcc table around */
term_z = new_dcc(&DCC_CHAT, sizeof(struct chat_info));
/* new_dcc returns -1 on error */
if (term_z < 0)
fatal("ERROR: Failed to initialize foreground chat.", 0);
getvhost(&dcc[term_z].sockname, AF_INET);
dcc[term_z].sock = STDOUT;
dcc[term_z].timeval = now;
dcc[term_z].u.chat->con_flags = conmask | EGG_BG_CONMASK;
dcc[term_z].u.chat->strip_flags = STRIP_ALL;
dcc[term_z].status = STAT_ECHO;
strcpy(dcc[term_z].nick, EGG_BG_HANDLE);
strcpy(dcc[term_z].host, "llama@console");
add_hq_user();
setsock(STDOUT, 0); /* Entry in net table */
dprintf(term_z, "\n### ENTERING DCC CHAT SIMULATION ###\n");
dprintf(term_z, "You can use the .su command to log into your Eggdrop account.\n\n");
dcc_chatter(term_z);
}
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) {
mainloop(1);
}
}