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// Copyright (C) 2006-2007 David Sugar, Tycho Softworks.
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
#include "server.h"
#include <signal.h>
NAMESPACE_SIPWITCH
using namespace UCOMMON_NAMESPACE;
#if defined(HAVE_SETRLIMIT) && defined(DEBUG)
#include <sys/time.h>
#include <sys/resource.h>
static void corefiles(void)
{
struct rlimit core;
assert(getrlimit(RLIMIT_CORE, &core) == 0);
#ifdef MAX_CORE_SOFT
core.rlim_cur = MAX_CORE_SOFT;
#else
core.rlim_cur = RLIM_INFINITY;
#endif
#ifdef MAX_CORE_HARD
core.rlim_max = MAX_CORE_HARD;
#else
core.rlim_max = RLIM_INFINITY;
#endif
assert(setrlimit(RLIMIT_CORE, &core) == 0);
}
#else
static void corefiles(void)
{
}
#endif
#ifdef USES_SIGNALS
static class __LOCAL SignalThread : public JoinableThread
{
private:
bool shutdown;
bool started;
public:
sigset_t sigs;
SignalThread();
~SignalThread();
void run(void);
} sigthread;
SignalThread::SignalThread() :
JoinableThread()
{
shutdown = started = false;
}
SignalThread::~SignalThread()
{
if(started) {
shutdown = true;
#ifdef __FreeBSD__
raise(SIGINT);
#else
pthread_kill(tid, SIGALRM);
#endif
join();
}
}
void SignalThread::run(void)
{
const char *uid = getenv("USER");
int signo;
unsigned period = 900;
started = true;
process::errlog(DEBUG1, "starting signals");
for(;;) {
alarm(period);
#ifdef HAVE_SIGWAIT2
sigwait(&sigs, &signo);
#else
signo = sigwait(&sigs);
#endif
alarm(0);
if(shutdown)
join();
process::errlog(DEBUG1, "received signal %d", signo);
switch(signo) {
case SIGALRM:
process::errlog(INFO, "system housekeeping");
registry::cleanup(period);
break;
case SIGINT:
case SIGTERM:
process::control(uid, "down");
break;
case SIGUSR1:
process::control(uid, "snapshot");
break;
case SIGHUP:
process::control(uid, "reload");
break;
}
}
}
#endif
#ifdef USES_COMMANDS
static void paddress(struct sockaddr_internet *a1, struct sockaddr_internet *a2)
{
assert(a1 != NULL);
char sep = '\n';
char buf[64];
unsigned len;
unsigned p1 = 0, p2 = 0;
if(!a1)
return;
Socket::getaddress((struct sockaddr *)a1, buf, sizeof(buf));
len = strlen(buf);
switch(a1->sa_family) {
case AF_INET:
p1 = (unsigned)ntohs(a1->ipv4.sin_port);
break;
#ifdef AF_INET6
case AF_INET6:
p1 = (unsigned)ntohs(a1->ipv6.sin6_port);
break;
#endif
}
if(a2) {
switch(a2->sa_family) {
case AF_INET:
p2 = (unsigned)ntohs(a2->ipv4.sin_port);
break;
#ifdef AF_INET6
case AF_INET6:
p2 = (unsigned)ntohs(a2->ipv6.sin6_port);
break;
#endif
}
}
if(a2 && p2)
sep = ',';
if(p1)
printf("%s:%u%c", buf, p1, sep);
else
printf("none%c", sep);
if(!a2 || !p2)
return;
Socket::getaddress((struct sockaddr *)a2, buf, sizeof(buf));
printf("%s:%u\n", buf, p2);
}
static void regdump(void)
{
mapped_view<MappedRegistry> reg("sipwitch.regmap");
unsigned count = reg.getCount();
unsigned found = 0, index = 0;
volatile const MappedRegistry *member;
MappedRegistry buffer;
time_t now;
char ext[8], exp[8], use[8];
const char *type;
if(!count) {
fprintf(stderr, "*** sipw: cannot access mapped registry\n");
exit(-1);
}
time(&now);
while(index < count) {
member = reg(index++);
do {
memcpy(&buffer, (const void *)member, sizeof(buffer));
} while(memcmp(&buffer, (const void *)member, sizeof(buffer)));
if(buffer.type == MappedRegistry::EXPIRED)
continue;
else if(buffer.type == MappedRegistry::TEMPORARY && !buffer.inuse)
continue;
if(!found++)
printf("%7s %-30s type %-30s use expires address\n", "ext", "user", "profile");
ext[0] = 0;
if(buffer.ext)
snprintf(ext, sizeof(ext), "%7d", buffer.ext);
exp[0] = '-';
exp[1] = 0;
snprintf(use, sizeof(use), "%u", buffer.inuse);
if(buffer.expires && buffer.type != MappedRegistry::TEMPORARY)
snprintf(exp, sizeof(exp), "%ld", buffer.expires - now);
switch(buffer.type) {
case MappedRegistry::REJECT:
type = "rej";
break;
case MappedRegistry::REFER:
type = "ref";
break;
case MappedRegistry::GATEWAY:
type = "gw";
break;
case MappedRegistry::SERVICE:
type = "peer";
break;
case MappedRegistry::TEMPORARY:
type = "temp";
break;
default:
type = "user";
};
printf("%7s %-30s %-4s %-30s %4s %7s ", ext, buffer.userid, type, buffer.profile.id, use, exp);
paddress(&buffer.contact, NULL);
fflush(stdout);
}
printf("found %d entries active of %d\n", found, count);
exit(0);
}
static void command(const char *uid, const char *cmd, unsigned timeout)
{
assert(uid == NULL || *uid != 0);
assert(cmd != NULL && *cmd != 0);
assert(timeout > 0);
#ifdef USES_SIGNALS
sigset_t sigs;
int signo;
sigemptyset(&sigs);
sigaddset(&sigs, SIGUSR1);
sigaddset(&sigs, SIGUSR2);
sigaddset(&sigs, SIGALRM);
pthread_sigmask(SIG_BLOCK, &sigs, NULL);
config::utils(uid);
if(!process::control(uid, "%d %s", getpid(), cmd)) {
fprintf(stderr, "*** sipw: %s; server not responding\n", cmd);
exit(2);
}
alarm(timeout);
#ifdef HAVE_SIGWAIT2
sigwait(&sigs, &signo);
#else
signo = sigwait(&sigs);
#endif
if(signo == SIGUSR1)
exit(0);
if(signo == SIGALRM) {
fprintf(stderr, "*** sipw: %s; server timed out\n", cmd);
exit(1);
}
fprintf(stderr, "*** sipw: %s; request failed\n", cmd);
#endif
exit(3);
}
#endif
static bool activate(int argc, char **args)
{
assert(args != NULL);
registry::mapped *reg;
bool rtn = true;
Socket::address *addr;
if(argc < 2 || argc > 3)
return false;
if(argc == 3)
addr = stack::getAddress(args[2]);
else
addr = config::getContact(args[1]);
if(!addr)
return false;
if(NULL == (reg = registry::create(args[1]))) {
delete addr;
return false;
}
if(!reg->setTargets(addr))
rtn = false;
registry::release(reg);
delete addr;
return rtn;
}
static mempager mempool(PAGING_SIZE);
unsigned allocate(void)
{
return mempool.getPages();
}
caddr_t allocate(size_t size, LinkedObject **list, volatile unsigned *count)
{
assert(size > 0);
caddr_t mp;
if(list && *list) {
mp = (caddr_t)*list;
*list = (*list)->getNext();
}
else {
if(count)
++(*count);
mp = (caddr_t)mempool.alloc(size);
}
memset(mp, 0, size);
return mp;
}
extern "C" int main(int argc, char **argv)
{
static char *user = NULL;
static char *cfgfile = NULL;
static bool daemon = false;
static bool warned = false;
static unsigned verbose = 0;
static unsigned priority = 0;
static unsigned concurrency = 0;
static int exit_code = 0;
char *cp, *tokens;
char *args[65];
corefiles();
// for deaemon env usually loaded from /etc/defaults or /etc/sysconfig
cp = getenv("CONCURRENCY");
if(cp)
concurrency = atoi(cp);
cp = getenv("PRIORITY");
if(cp)
priority = atoi(cp);
cp = getenv("VERBOSE");
if(cp) {
warned = true;
verbose = atoi(cp);
}
cp = getenv("CFGFILE");
if(cp)
cfgfile = strdup(cp);
#ifndef _MSWINDOWS_
if(!getuid())
daemon = true;
#endif
while(NULL != *(++argv)) {
if(!strncmp(*argv, "--", 2))
++*argv;
if(!strcmp(*argv, "-f") || !stricmp(*argv, "-foreground")) {
daemon = false;
continue;
}
if(!strcmp(*argv, "-d") || !stricmp(*argv, "-background")) {
daemon = true;
continue;
}
if(!strcmp(*argv, "-p")) {
priority = 1;
continue;
}
if(!strnicmp(*argv, "-priority=", 10)) {
priority = atoi(*argv + 10);
continue;
}
if(!stricmp(*argv, "-concurrency")) {
cp = *(++argv);
if(!cp) {
fprintf(stderr, "*** sipw: concurrency option missing\n");
exit(-1);
}
concurrency = atoi(cp);
continue;
}
if(!strnicmp(*argv, "-concurrency=", 13)) {
concurrency = atoi(*argv + 13);
continue;
}
if(!stricmp(*argv, "-c") || !stricmp(*argv, "-config")) {
cfgfile = *(++argv);
if(!cfgfile) {
fprintf(stderr, "*** sipw: cfgfile option missing\n");
exit(-1);
}
continue;
}
if(!strnicmp(*argv, "-config=", 8)) {
cfgfile = *argv + 8;
continue;
}
if(!stricmp(*argv, "-version")) {
printf("SIP Witch " VERSION "\n"
"Copyright (C) 2007 David Sugar, Tycho Softworks\n"
"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n"
"This is free software: you are free to change and redistribute it.\n"
"There is NO WARRANTY, to the extent permitted by law.\n");
exit(0);
}
if(!strcmp(*argv, "-u") || !stricmp(*argv, "-user")) {
user = *(++argv);
if(!user) {
fprintf(stderr, "*** sipw: user option missing\n");
exit(-1);
}
continue;
}
if(!strnicmp(*argv, "-user=", 6)) {
user = *argv + 6;
continue;
}
if(!stricmp(*argv, "-help") || !stricmp(*argv, "-?")) {
#ifdef USES_COMMANDS
printf("Usage: sipw [options] [command...]\n"
#else
printf("Usage: sipw [options\n"
#endif
"Options:\n"
" --help Display this information\n"
" -foreground Run server in foreground\n"
" -background Run server as daemon\n"
" -config=<cfgfile> Use cfgfile in place of default one\n"
" -user=<userid> Change to effective user from root\n"
" -concurrency=<level> Increase thread concurrency\n"
" -priority=<level> Increase process priority\n"
" -v[vv], -x<n> Select verbosity or debug level\n"
#ifdef USES_COMMANDS
"Commands:\n"
" stop Stop running server\n"
" reload Reload config file\n"
" restart Restart server\n"
" check Test for thread deadlocks\n"
" snapshot Create snapshot file\n"
" dump Dump in-memory config tables\n"
" digest <user> <pass> Compute digest based on server realm\n"
" registry List registrations from shared memory\n"
" activate <user> Activate static user registration\n"
" release <user> Release registered user\n"
#endif
);
exit(0);
}
if(!strnicmp(*argv, "-x", 2)) {
if(*argv + 2)
cp = *argv + 2;
else
cp = *(++argv);
if(!cp) {
fprintf(stderr, "*** sipw: debug level missing\n");
exit(-1);
}
verbose = atoi(cp) + INFO;
continue;
}
cp = *argv;
while(**argv == '-' && *(++cp)) {
switch(*cp) {
case 'v':
warned = true;
if(!verbose)
verbose = INFO;
else
++verbose;
break;
case 'f':
daemon = false;
break;
case 'd':
daemon = true;
break;
case 'p':
priority = 1;
break;
default:
fprintf(stderr, "*** sipw: -%c: unknown option\n", *cp);
exit(-1);
}
}
if(!*cp)
continue;
#ifdef USES_COMMANDS
process::util();
if(!stricmp(*argv, "stop") || !stricmp(*argv, "reload") || !stricmp(*argv, "abort") || !stricmp(*argv, "restart")) {
config::utils(user);
if(!process::control(user, *argv)) {
fprintf(stderr, "*** sipw: %s; server not responding\n", *argv);
exit(2);
}
exit(0);
}
if(!stricmp(*argv, "check")) {
config::utils(user);
if(!process::control(user, *argv)) {
fprintf(stderr, "*** sipw: %s; server cannot be checked\n", *argv);
exit(2);
}
exit(0);
}
if(!stricmp(*argv, "digest")) {
const char *userid = *(++argv);
const char *secret = *(++argv);
string_t digest;
if(!userid || !secret) {
fprintf(stderr, "*** sipw: use digest userid secret\n");
exit(-1);
}
config::utils(user);
printf("<!-- provision template example for realm %s -->\n", registry::getRealm());
printf("<provision>\n");
printf(" <user><id>%s</id>\n", userid);
digest = (string_t)userid + ":" + (string_t)getenv("REALM") + ":" + (string_t)secret;
if(!stricmp(getenv("DIGEST"), "sha1"))
digest::sha1(digest);
else if(!stricmp(getenv("DIGEST"), "rmd160"))
digest::rmd160(digest);
else
digest::md5(digest);
if(digest[0])
printf(" <digest>%s</digest>\n", *digest);
printf(" </user>\n");
printf("</provision>\n");
exit(0);
}
if(!stricmp(*argv, "registry"))
regdump();
if(!stricmp(*argv, "activate")) {
if(!argv[1]) {
fprintf(stderr, "*** sipw: activate: userid [address] missing\n");
exit(-1);
}
if(argv[2] && argv[3]) {
fprintf(stderr, "*** sipw: activate: only one address\n");
exit(-1);
}
command(user, *argv, 30);
}
if(!stricmp(*argv, "release")) {
if(!argv[1]) {
fprintf(stderr, "*** sipw: release: userid missing\n");
exit(-1);
}
if(argv[2]) {
fprintf(stderr, "*** sipw: release: only one userid\n");
exit(-1);
}
command(user, *argv, 30);
}
if(!stricmp(*argv, "dump") || !stricmp(*argv, "snapshot"))
command(user, *argv, 30);
#endif
fprintf(stderr, "*** sipw: %s: unknown option\n", *argv);
exit(-1);
}
#ifdef USES_SIGNALS
sigemptyset(&sigthread.sigs);
sigaddset(&sigthread.sigs, SIGALRM);
sigaddset(&sigthread.sigs, SIGHUP);
sigaddset(&sigthread.sigs, SIGINT);
sigaddset(&sigthread.sigs, SIGTERM);
sigaddset(&sigthread.sigs, SIGUSR1);
pthread_sigmask(SIG_BLOCK, &sigthread.sigs, NULL);
#endif
#ifndef _MSWINDOWS_
signal(SIGPIPE, SIG_IGN);
#endif
if(!warned && !verbose)
verbose = 2;
process::setVerbose((errlevel_t)(verbose));
#ifdef _MSWINDOWS_
if(!user)
user = "telephony";
#else
if(!user && getuid() == 0)
user = "telephony";
#endif
if(daemon)
process::background(user, cfgfile, priority);
else
process::foreground(user, cfgfile, priority);
config::reload(user);
config::startup();
#ifdef USES_SIGNALS
sigthread.background();
#endif
if(concurrency)
Thread::concurrency(concurrency);
while(NULL != (cp = process::receive())) {
if(!stricmp(cp, "reload")) {
config::reload(user);
continue;
}
if(!stricmp(cp, "check")) {
if(!config::check())
process::reply("check failed");
continue;
}
if(!stricmp(cp, "stop") || !stricmp(cp, "down") || !strcmp(cp, "exit"))
break;
if(!stricmp(cp, "restart")) {
exit_code = SIGABRT;
break;
}
if(!stricmp(cp, "snapshot")) {
service::snapshot(user);
continue;
}
if(!stricmp(cp, "dump")) {
service::dumpfile(user);
continue;
}
if(!stricmp(cp, "abort")) {
abort();
continue;
}
argc = 0;
tokens = NULL;
while(argc < 64 && NULL != (cp = const_cast<char *>(string::token(cp, &tokens, " \t")))) {
args[argc++] = cp;
}
args[argc] = NULL;
if(argc < 1)
continue;
if(!stricmp(args[0], "verbose")) {
if(argc > 2) {
invalid:
process::reply("invalid argument");
continue;
}
process::setVerbose(errlevel_t(atoi(args[1])));
continue;
}
#ifdef SCHED_RR
Thread::policy(SCHED_RR);
#endif
if(!stricmp(args[0], "concurrency")) {
if(argc != 2)
goto invalid;
Thread::concurrency(atoi(args[1]));
continue;
}
if(!stricmp(args[0], "subscribe")) {
if(argc < 2 || argc > 3)
goto invalid;
service::subscribe(args[1], args[2]);
continue;
}
if(!stricmp(args[0], "unsubscribe")) {
if(argc != 2)
goto invalid;
service::unsubscribe(args[1]);
continue;
}
if(!stricmp(args[0], "activate")) {
if(!activate(argc, args))
process::reply("cannot activate");
continue;
}
if(!stricmp(args[0], "release")) {
if(argc != 2)
goto invalid;
if(!registry::remove(args[1]))
process::reply("cannot release");
continue;
}
process::reply("unknown command");
}
service::shutdown();
exit(exit_code);
}
END_NAMESPACE