trap_unaligned(void)
{
unsigned int buf[2];
buf[0] = SSIN_UACPROC;
buf[1] = UAC_SIGBUS | UAC_NOPRINT;
setsysinfo(SSI_NVPAIRS, buf, 1, 0, 0, 0);
}
void
os_init(const char *argv[], const char *envp[])
{
int buf[2] = { SSIN_UACPROC, UAC_SIGBUS | UAC_NOPRINT };
int error;
os_vm_page_size = OS_VM_DEFAULT_PAGESIZE;
if (setsysinfo(SSI_NVPAIRS, buf, 1, NULL, NULL) == -1)
perror("setsysinfo");
}
/*
* Place platform-specific startup hacks here. This is the right
* place to put code that must be executed early in launch of either a
* postmaster, a standalone backend, or a standalone bootstrap run.
* Note that this code will NOT be executed when a backend or
* sub-bootstrap run is forked by the server.
*
* XXX The need for code here is proof that the platform in question
* is too brain-dead to provide a standard C execution environment
* without help. Avoid adding more here, if you can.
*/
static void
startup_hacks(const char *progname)
{
#if defined(__alpha) /* no __alpha__ ? */
#ifdef NOFIXADE
int buffer[] = {SSIN_UACPROC, UAC_SIGBUS | UAC_NOPRINT};
#endif
#endif /* __alpha */
/*
* On some platforms, unaligned memory accesses result in a kernel trap;
* the default kernel behavior is to emulate the memory access, but this
* results in a significant performance penalty. We ought to fix PG not to
* make such unaligned memory accesses, so this code disables the kernel
* emulation: unaligned accesses will result in SIGBUS instead.
*/
#ifdef NOFIXADE
#if defined(ultrix4)
syscall(SYS_sysmips, MIPS_FIXADE, 0, NULL, NULL, NULL);
#endif
#if defined(__alpha) /* no __alpha__ ? */
if (setsysinfo(SSI_NVPAIRS, buffer, 1, (caddr_t) NULL,
(unsigned long) NULL) < 0)
write_stderr("%s: setsysinfo failed: %s\n",
progname, strerror(errno));
#endif
#endif /* NOFIXADE */
#ifdef WIN32
{
WSADATA wsaData;
int err;
/* Make output streams unbuffered by default */
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
/* Prepare Winsock */
err = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (err != 0)
{
write_stderr("%s: WSAStartup failed: %d\n",
progname, err);
exit(1);
}
/* In case of general protection fault, don't show GUI popup box */
SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX);
}
#endif /* WIN32 */
}
static void setupForSpecificOS(void)
{
#if !defined(ALINT) && defined(ALTI_CFG_OS_TRU64)
acp_sint32_t sBuf[2];
sBuf[0] = SSIN_UACPROC;
sBuf[1] = UAC_SIGBUS | UAC_NOPRINT;
(void)setsysinfo(SSI_NVPAIRS, sBuf, 1, 0, 0);
#endif
}
int abort_on_misalignment(char *ebuf)
{
#ifdef __osf__
static int buf[2] = { SSIN_UACPROC, UAC_SIGBUS };
if(setsysinfo(SSI_NVPAIRS, (caddr_t) buf, 1, 0, 0) < 0) {
sprintf(ebuf, "setsysinfo: errno %d", errno);
return (-1);
}
#endif
return (0);
}
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
/* Include patch.h header for patch("...") */
#include "patch.h"
argc = arg_c;
argv = arg_v;
/* 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) 2010 Eggheads",
egg_version);
/* Now add on the patchlevel (for Tcl) */
sprintf(&egg_version[strlen(egg_version)], " %u", egg_numver);
strcat(egg_version, egg_xtra);
/* 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;
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);
#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
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));
#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) {
fgets(s, 10, f);
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);
}
}
/* 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. */
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));
getvhost(&dcc[n].sockname, AF_INET);
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) {
mainloop(1);
}
}
int main(int argc, char **argv)
{
int xx, i;
#ifdef STOP_UAC
int nvpair[2];
#endif
char buf[520], s[25];
FILE *f;
#ifndef ENABLE_STRIP
struct rlimit cdlim;
#endif
/* Don't allow Eggdrop to run as root. */
if (((int) getuid() == 0) || ((int) geteuid() == 0))
fatal("ERROR: Eggdrop will not run as root!", 0);
#ifndef ENABLE_STRIP
cdlim.rlim_cur = RLIM_INFINITY;
cdlim.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &cdlim);
#endif
#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) 2005 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
nvpair[0] = SSIN_UACPROC;
nvpair[1] = UAC_NOPRINT;
setsysinfo(SSI_NVPAIRS, (char *) nvpair, 1, NULL, 0);
#endif
/* Set up error / signal traps. */
setup_signal_traps();
/* Initialize a few variables before main loop. */
cache_miss = 0;
cache_hit = 0;
chanset = NULL;
now = time(NULL);
egg_memcpy(&nowtm, localtime(&now), sizeof(struct tm));
lastmin = nowtm.tm_min;
/* Initialize random number generator. */
srandom((unsigned int) (now % (getpid() + getppid())));
init_mem();
init_language(1);
/* Process command line arguments. */
process_args(argc, argv);
printf("\n%s\n", version);
init_dcc_max();
init_userent();
logfile_init(0);
init_bots();
init_net();
init_modules();
if (backgrd)
bg_prepare_split();
init_tcl(argc, argv);
init_language(0);
help_init();
traffic_init();
logfile_init(1);
#ifdef STATIC
link_statics();
#endif
strncpyz(s, ctime(&now), sizeof s);
strcpy(&s[11], &s[20]);
putlog(LOG_ALL, "*", "--- Loading %s (%s)", ver, s);
/* Read configuration data. */
readconfig();
/* Check for encryption module. */
if (!encrypt_pass) {
printf(MOD_NOCRYPT);
bg_send_quit(BG_ABORT);
exit(1);
}
putlog(LOG_MISC, "*", "=== %s: %d channels, %d users.", botnetnick,
count_channels(), count_users(userlist));
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) {
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 {
#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("Cannot not write to '%s' (PID file).\n", pid_file);
fclose(fp);
unlink(pid_file);
}
else
fclose(fp);
}
else
printf("Cannot not write to '%s' (PID file).\n", 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");
/* Create hooks. */
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) backupuserfile);
add_hook(HOOK_DAILY, (Function) event_logfile);
add_hook(HOOK_DAILY, (Function) traffic_reset);
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
now = time(NULL);
random();
/* Every 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)
continue;
if (dcc[idx].type && dcc[idx].type->activity) {
traffic_update_in(dcc[idx].type, (strlen(buf) + 1)); /* Traffic stats. */
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 */
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)
continue;
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 {
int f = 1;
module_entry *p;
Function startfunc;
char name[256];
check_tcl_event("prerestart");
/* Unload as many modules as possible */
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);
}
/* Flush log files to disk. */
flushlogs();
/* Clean up Tcl stuff. */
kill_tcl();
/* Initialize stuff again. */
init_tcl(argc, argv);
init_language(0);
help_init();
traffic_init();
logfile_init(1);
/* 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;
}
}
}
