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init.c
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init.c
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/* Chatnet K9 Channel Services
**
** Based on ircdservices ver. by Andy Church
** Chatnet modifications (c) 2001-2002
**
** E-mail: routing@lists.chatnet.org
** Authors:
**
** Vampire (vampire@alias.chatnet.org)
** Thread (thread@alias.chatnet.org)
** MRX (tom@rooted.net)
** sloth (sloth@nopninjas.com)
**
** *** DO NOT DISTRIBUTE ***
**/
#include "services.h"
#include "encrypt.h"
/*************************************************************************/
/* Send a NICK command for the given pseudo-client. If `user' is NULL,
* send NICK commands for all the pseudo-clients. */
#ifdef IRC_UNREAL
# define EXTRA_MODES (UMODE_S | UMODE_q | UMODE_d)
#else
# define EXTRA_MODES 0
#endif
#define NICK(nick,name,modes) \
send_nick((nick), ServiceUser, ServiceHost, ServerName, (name), (modes) | EXTRA_MODES);
void introduce_user(const char *user)
{
/* Watch out for infinite loops... */
#define LTSIZE 20
static int lasttimes[LTSIZE];
if (lasttimes[0] >= time(NULL)-3)
fatal("introduce_user() loop detected");
memmove(lasttimes, lasttimes+1, sizeof(lasttimes)-sizeof(int));
lasttimes[LTSIZE-1] = time(NULL);
#undef LTSIZE
if (!user || stricmp(user, s_NickServ) == 0)
NICK(s_NickServ, desc_NickServ, UMODE_o);
if (!user || stricmp(user, s_ChanServ) == 0) {
new_user(s_ChanServ);
NICK(s_ChanServ, desc_ChanServ, UMODE_o);
}
}
#undef NICK
/*************************************************************************/
/* Set GID if necessary. Return 0 if successful (or if RUNGROUP not
* defined), else print an error message to logfile and return -1.
*/
static int set_group(void)
{
#if defined(RUNGROUP) && defined(HAVE_SETGRENT)
struct group *gr;
setgrent();
while ((gr = getgrent()) != NULL) {
if (strcmp(gr->gr_name, RUNGROUP) == 0)
break;
}
endgrent();
if (gr) {
setgid(gr->gr_gid);
return 0;
} else {
log("Unknown group `%s'\n", RUNGROUP);
return -1;
}
#else
return 0;
#endif
}
/*************************************************************************/
/* Parse command-line options. Return 0 if all went well, -1 for an error
* with an option, or 1 for -help.
*/
static int parse_options(int ac, char **av)
{
int i, n;
char *s, *t;
debug = 0;
for (i = 1; i < ac; i++) {
s = av[i];
if (*s == '-') {
s++;
if (strcmp(s, "remote") == 0) {
if (++i >= ac) {
fprintf(stderr, "-remote requires hostname[:port]\n");
return -1;
}
s = av[i];
t = strchr(s, ':');
if (t) {
*t++ = 0;
if (atoi(t) > 0)
RemotePort = atoi(t);
else {
fprintf(stderr, "-remote: port number must be a positive integer. Using default.");
return -1;
}
t[-1] = ':';
}
RemoteServer = s;
} else if (strcmp(s, "local") == 0) {
if (++i >= ac) {
fprintf(stderr, "-local requires hostname or [hostname]:[port]\n");
return -1;
}
s = av[i];
t = strchr(s, ':');
if (t) {
*t = 0;
n = atoi(t+1);
if (n >= 0)
LocalPort = n;
else
fprintf(stderr, "-local: port number must be a positive integer or 0. Using default.\n");
*t = ':';
}
LocalHost = s;
} else if (strcmp(s, "name") == 0) {
if (++i >= ac) {
fprintf(stderr, "-name requires a parameter\n");
return -1;
}
ServerName = av[i];
} else if (strcmp(s, "desc") == 0) {
if (++i >= ac) {
fprintf(stderr, "-desc requires a parameter\n");
return -1;
}
ServerDesc = av[i];
} else if (strcmp(s, "numeric") == 0) {
#ifdef IRC_UNREAL
if (++i >= ac) {
fprintf(stderr, "-numeric requires a parameter\n");
return -1;
}
n = atoi(av[i]);
if (n < 0 || n > 254)
fprintf(stderr, "-numeric parameter must be between 0 and 254 inclusive. Using default.\n");
else
ServerNumeric = n;
#else
fprintf(stderr, "-numeric available only with Unreal IRC daemon\n");
return -1;
#endif
} else if (strcmp(s, "user") == 0) {
if (++i >= ac) {
fprintf(stderr, "-user requires a parameter\n");
return -1;
}
ServiceUser = av[i];
} else if (strcmp(s, "host") == 0) {
if (++i >= ac) {
fprintf(stderr, "-host requires a parameter\n");
return -1;
}
ServiceHost = av[i];
} else if (strcmp(s, "dir") == 0) {
if (++i >= ac) {
fprintf(stderr, "-dir requires a parameter\n");
return -1;
}
services_dir = av[i];
} else if (strcmp(s, "log") == 0) {
if (++i >= ac) {
fprintf(stderr, "-log requires a parameter\n");
return -1;
}
log_filename = av[i];
} else if (strcmp(s, "update") == 0) {
if (++i >= ac) {
fprintf(stderr, "-update requires a parameter\n");
return -1;
}
s = av[i];
if (atoi(s) <= 0) {
fprintf(stderr, "-update: number of seconds must be positive");
return -1;
} else
UpdateTimeout = atol(s);
} else if (strcmp(s, "expire") == 0) {
if (++i >= ac) {
fprintf(stderr, "-expire requires a parameter\n");
return -1;
}
s = av[i];
if (atoi(s) <= 0) {
fprintf(stderr, "-expire: number of seconds must be positive");
return -1;
} else
ExpireTimeout = atol(s);
} else if (strcmp(s, "debug") == 0) {
debug++;
} else if (strcmp(s, "readonly") == 0) {
readonly = 1;
skeleton = 0;
} else if (strcmp(s, "skeleton") == 0) {
readonly = 0;
skeleton = 1;
} else if (strcmp(s, "nofork") == 0) {
nofork = 1;
} else if (strcmp(s, "forceload") == 0) {
forceload = 1;
} else if (strcmp(s, "noexpire") == 0) {
noexpire = 1;
} else if (strcmp(s, "noakill") == 0) {
noakill = 1;
} else if (strcmp(s, "h") == 0 || strcmp(s, "help") == 0
|| strcmp(s, "-help") == 0) {
fputs(
"The following options are recognized:"
" -remote server[:port] Connect to the specified server"
" -local host[:port] Connect from the specified address (e.g."
" for multihomed servers)"
" -name servername Our server name (e.g. services.some.net)"
" -desc string Description of us (e.g. SomeNet Services)\n"
#ifdef IRC_UNREAL
" -numeric numeric Services server numeric (1-254 or 0 for none)\n"
#endif
" -user username Username for Services' nicks (e.g. services)"
" -host hostname Hostname for Services' nicks (e.g. some.net)"
" -dir directory Directory containing Services' data files"
" (e.g. /usr/local/lib/services)"
" -log filename Services log filename (e.g. services.log)"
" -update secs How often to update databases (in seconds)"
" -expire secs How often to check for nick/channel"
" expiration (in seconds)"
" -debug Enable debugging mode--more info sent to log"
" (give option more times for more info)"
" -readonly Enable read-only mode--no changes to"
" databases allowed, .db files and log"
" not written"
" -skeleton Enable skeleton mode--like read-only mode,"
" but only OperServ is available"
" -nofork Do not fork after startup; log messages will"
" be written to terminal (as well as to"
" the log file if not in read-only mode)"
" -forceload Try to load as much of the databases as"
" possible, even if errors are encountered"
" -noexpire Prevents all expirations (nicknames, channels,"
" akills, session limit exceptions, etc.)"
" -noakill Disables autokill checking"
, stdout);
exit(0);
} else {
fprintf(stderr, "Unknown option -%s. Use \"-help\" for help.\n", s);
return -1;
}
} else {
fprintf(stderr, "Non-option arguments not allowed\n");
return -1;
}
}
return 0;
}
/*************************************************************************/
/* Remove our PID file. Done at exit. */
static void remove_pidfile(void)
{
remove(PIDFilename);
}
/*************************************************************************/
/* Create our PID file and write the PID to it. */
static void write_pidfile(void)
{
FILE *pidfile;
pidfile = fopen(PIDFilename, "w");
if (pidfile) {
fprintf(pidfile, "%d\n", (int)getpid());
fclose(pidfile);
atexit(remove_pidfile);
} else {
log_perror("Warning: cannot write to PID file %s", PIDFilename);
}
}
/*************************************************************************/
/* Overall initialization routine. Returns 0 on success, -1 on failure. */
int init(int ac, char **av)
{
/* temporary
ChannelInfo *ci;
NickInfo *ni;
*/
int i;
int openlog_failed = 0, openlog_errno = 0;
int started_from_term = isatty(0) && isatty(1) && isatty(2);
/* Initialize pseudo-random number generator. */
srand(time(NULL) ^ getppid() ^ getpid()<<16);
/* Set file creation mask and group ID. */
#if defined(DEFUMASK) && HAVE_UMASK
umask(DEFUMASK);
#endif
if (set_group() < 0)
return -1;
/* Parse command-line options; exit if an error occurs. */
if (parse_options(ac, av) < 0)
return -1;
/* Chdir to Services data directory. */
if (chdir(services_dir) < 0) {
fprintf(stderr, "chdir(%s): %s\n", services_dir, strerror(errno));
return -1;
}
/* Open logfile, and complain if we didn't. */
if (open_log() < 0) {
openlog_errno = errno;
if (started_from_term) {
fprintf(stderr, "Warning: unable to open log file %s: %s\n",
log_filename, strerror(errno));
} else {
openlog_failed = 1;
}
}
/* Read configuration file; exit if there are problems. */
if (!read_config())
return -1;
/* Re-parse command-line options (to override configuration file). */
parse_options(ac, av);
/* Detach ourselves if requested. */
if (!nofork) {
if ((i = fork()) < 0) {
perror("fork()");
return -1;
} else if (i != 0) {
exit(0);
}
if (started_from_term) {
close(0);
close(1);
close(2);
}
if (setpgid(0, 0) < 0) {
perror("setpgid()");
return -1;
}
}
#ifdef MEMCHECKS
/* Account for runtime memory. Do this after forking to avoid a bogus
* "XXX bytes leaked on exit" message when the parent exits. */
init_memory();
#endif
/* Write our PID to the PID file. */
write_pidfile();
/* Announce ourselves to the logfile. */
if (debug || readonly || skeleton || noexpire) {
log("Services %s (compiled for %s) starting up (options:%s%s%s%s)",
version_number, version_protocol,
debug ? " debug" : "",
readonly ? " readonly" : "",
skeleton ? " skeleton" : "",
noexpire ? " noexpire" : "");
} else {
log("Services %s (compiled for %s) starting up",
version_number, version_protocol);
}
start_time = time(NULL);
/* If in read-only mode, close the logfile again. */
if (readonly)
close_log();
/* Set signal handlers. Catch certain signals to let us do things or
* panic as necessary, and ignore all others.
*/
#ifdef NSIG
for (i = 1; i <= NSIG; i++) {
#else
for (i = 1; i <= 32; i++) {
#endif
if (i != SIGPROF)
signal(i, SIG_IGN);
}
signal(SIGINT, weirdsig_handler);
signal(SIGTERM, weirdsig_handler);
signal(SIGQUIT, weirdsig_handler);
#ifndef DUMPCORE
signal(SIGSEGV, weirdsig_handler);
#endif
signal(SIGBUS, weirdsig_handler);
signal(SIGQUIT, weirdsig_handler);
signal(SIGHUP, weirdsig_handler);
signal(SIGILL, weirdsig_handler);
signal(SIGTRAP, weirdsig_handler);
signal(SIGFPE, weirdsig_handler);
#ifdef SIGIOT
signal(SIGIOT, weirdsig_handler);
#endif
/* This is our "out-of-memory" panic switch */
signal(SIGUSR1, weirdsig_handler);
/* Initialize multi-language support */
lang_init();
if (debug)
log("debug: Loaded languages");
/* Initialiize subservices */
ns_init();
cs_init();
#ifdef USE_MYSQL
if(!db_connect(1))
fatal("could not connect to mysql database");
#endif
/* Load up databases */
if (!skeleton) {
db_load_ns();
//load_ns_dbase();
if (debug)
log("debug: Loaded %s database (1/7)", s_NickServ);
db_load_cs();
//load_cs_dbase();
if (debug)
log("debug: Loaded %s database (2/7)", s_ChanServ);
/* start: temporary code */
/*
for (ni = firstnick(); ni; ni = nextnick()) {
genpass(ni->pass);
email_pass(ni->email ? ni->email : "invalid", ni->pass, ni->nick);
log("debug: genpass for [%s]", ni->nick);
#ifdef USE_ENCRYPTION
encrypt_in_place(ni->pass, PASSMAX - 1);
#endif
db_nick_set(ni, "pass", ni->pass);
}
for(ci = cs_firstchan(); ci; ci = cs_nextchan()) {
genpass(ci->founderpass);
email_pass(ci->email ? ci->email : "invalid", ci->founderpass, ci->name);
log("debug: genpass for [%s]", ci->name);
#ifdef USE_ENCRYPTION
encrypt_in_place(ci->founderpass, PASSMAX - 1);
#endif
db_chan_set(ci, "founderpass", ci->founderpass);
}
exit(0);
*/
/*
for (ni = firstnick(); ni; ni = nextnick()) {
if(db_add_nick(ni) == -1)
log("dberror: while adding nicks. continuing");
}
for(ci = cs_firstchan(); ci; ci = cs_nextchan()) {
if(db_add_channel(ci) == -1)
log("dberror: while adding channels. continuing");
}
exit(1);
*/
/* end: temporary code */
}
log("Databases loaded");
/* Connect to the remote server */
servsock = conn(RemoteServer, RemotePort, LocalHost, LocalPort);
if (servsock < 0)
fatal_perror("Can't connect to server");
send_server();
sgets2(inbuf, sizeof(inbuf), servsock);
if (strnicmp(inbuf, "ERROR", 5) == 0) {
/* Close server socket first to stop wallops, since the other
* server doesn't want to listen to us anyway */
disconn(servsock);
servsock = -1;
fatal("Remote server returned: %s", inbuf);
}
/* Announce a logfile error if there was one */
if (openlog_failed) {
wallops(NULL, "Warning: couldn't open logfile: %s",
strerror(openlog_errno));
}
/* Bring in our pseudo-clients */
introduce_user(NULL);
/* Success! */
return 0;
}
/*************************************************************************/