/*-
* Copyright (c) 2000-2005 MAEKAWA Masahide <maekawa@cvsync.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pthread.h>
#include <string.h>
#include <unistd.h>
#include "compat_stdbool.h"
#include "compat_stdint.h"
#include "compat_stdio.h"
#include "compat_stdlib.h"
#include "compat_inttypes.h"
#include "compat_limits.h"
#include "collection.h"
#include "cvsync.h"
#include "cvsync_attr.h"
#include "hash.h"
#include "logmsg.h"
#include "mux.h"
#include "network.h"
#include "pid.h"
#include "version.h"
#include "receiver.h"
#include "dircmp.h"
#include "filecmp.h"
#include "defs.h"
#ifndef CVSYNCD_DEFAULT_HALTFILE
#define CVSYNCD_DEFAULT_HALTFILE "/var/run/cvsyncd.HALT"
#endif /* CVSYNCD_DEFAULT_HALTFILE */
#ifndef CVSYNCD_DEFAULT_PIDFILE
#define CVSYNCD_DEFAULT_PIDFILE "/var/run/cvsyncd.pid"
#endif /* CVSYNCD_DEFAULT_PIDFILE */
void *server(void *);
void usage(void);
void version(void);
static pthread_attr_t attr;
static char cvsync_confname[PATH_MAX + CVSYNC_NAME_MAX + 1];
static char cvsync_logname[PATH_MAX + CVSYNC_NAME_MAX + 1];
int
main(int argc, char *argv[])
{
const char *base_cname = NULL, *base_pname = NULL, *base_lname = NULL;
const char *workdir = NULL, *uid = NULL, *gid = NULL;
struct config *cf;
struct server_args *sa;
struct stat st;
char tmpname[PATH_MAX + CVSYNC_NAME_MAX + 1];
time_t init_tic = time(NULL);
int *socks, sock, level = CVSYNC_COMPRESS_LEVEL_UNSPEC, flags, ch, wn;
int status = EXIT_SUCCESS;
bool log_flag = false, background = true;
while ((ch = getopt(argc, argv, "Vc:fg:hl:p:qu:vw:z:")) != -1) {
switch (ch) {
case 'V':
version();
/* NOTREACHED */
case 'c':
if (base_cname != NULL) {
usage();
/* NOTREACHED */
}
base_cname = optarg;
break;
case 'f':
if (!background) {
usage();
/* NOTREACHED */
}
background = false;
break;
case 'g':
if (gid != NULL) {
usage();
/* NOTREACHED */
}
gid = optarg;
break;
case 'h':
usage();
/* NOTREACHED */
case 'l':
if (base_lname != NULL) {
usage();
/* NOTREACHED */
}
base_lname = optarg;
break;
case 'p':
if (base_pname != NULL) {
usage();
/* NOTREACHED */
}
base_pname = optarg;
break;
case 'q':
if (log_flag) {
usage();
/* NOTREACHED */
}
logmsg_quiet = true;
log_flag = true;
break;
case 'u':
if (uid != NULL) {
usage();
/* NOTREACHED */
}
uid = optarg;
break;
case 'v':
if (log_flag) {
usage();
/* NOTREACHED */
}
logmsg_detail = true;
log_flag = true;
break;
case 'w':
if (workdir != NULL) {
usage();
/* NOTREACHED */
}
workdir = optarg;
break;
case 'z':
if (level != CVSYNC_COMPRESS_LEVEL_UNSPEC) {
usage();
/* NOTREACHED */
}
if ((strlen(optarg) != 1) || !isdigit((int)*optarg)) {
usage();
/* NOTREACHED */
}
level = *optarg - '0';
break;
default:
usage();
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (argc != 0) {
usage();
/* NOTREACHED */
}
if (base_cname == NULL) {
wn = snprintf(tmpname, sizeof(tmpname), "%s",
CVSYNCD_DEFAULT_CONFIG);
} else {
if ((base_cname[0] == '/') || (workdir == NULL)) {
wn = snprintf(tmpname, sizeof(tmpname), "%s",
base_cname);
} else {
wn = snprintf(tmpname, sizeof(tmpname), "%s/%s",
workdir, base_cname);
}
}
if ((wn <= 0) || ((size_t)wn >= sizeof(tmpname))) {
logmsg_err("-c <file>: %s", strerror(EINVAL));
exit(EXIT_FAILURE);
}
if (realpath(tmpname, cvsync_confname) == NULL) {
logmsg_err("%s: %s", tmpname, strerror(errno));
exit(EXIT_FAILURE);
}
if ((cf = config_load(cvsync_confname)) == NULL)
exit(EXIT_FAILURE);
if (strlen(cf->cf_halt_name) == 0) {
if (workdir == NULL) {
wn = snprintf(cf->cf_halt_name,
sizeof(cf->cf_halt_name), "%s",
CVSYNCD_DEFAULT_HALTFILE);
} else {
wn = snprintf(cf->cf_halt_name,
sizeof(cf->cf_halt_name),
"%s/cvsyncd.HALT", workdir);
}
if ((wn <= 0) || ((size_t)wn >= sizeof(cf->cf_halt_name))) {
logmsg_err("%s/cvsyncd.HALT: %s", workdir,
strerror(EINVAL));
exit(EXIT_FAILURE);
}
}
if (strlen(cf->cf_pid_name) == 0) {
if (base_pname == NULL) {
wn = snprintf(cf->cf_pid_name, sizeof(cf->cf_pid_name),
"%s", CVSYNCD_DEFAULT_PIDFILE);
} else {
if ((base_pname[0] == '/') || (workdir == NULL)) {
wn = snprintf(cf->cf_pid_name,
sizeof(cf->cf_pid_name), "%s",
base_pname);
} else {
wn = snprintf(cf->cf_pid_name,
sizeof(cf->cf_pid_name), "%s/%s",
workdir, base_pname);
}
}
if ((wn <= 0) || ((size_t)wn >= sizeof(cf->cf_pid_name))) {
logmsg_err("-p <file>: %s", strerror(EINVAL));
exit(EXIT_FAILURE);
}
}
if (!background) {
if (!logmsg_open(NULL, false))
exit(EXIT_FAILURE);
if (!privilege_drop(uid, gid)) {
logmsg_close();
exit(EXIT_FAILURE);
}
if (pid_create(cf->cf_pid_name) == NULL) {
logmsg_close();
exit(EXIT_FAILURE);
}
} else {
if (base_lname == NULL) {
if (!logmsg_open(NULL, true))
exit(EXIT_FAILURE);
} else {
if ((base_lname[0] == '/') || (workdir == NULL)) {
wn = snprintf(tmpname, sizeof(tmpname), "%s",
base_lname);
} else {
wn = snprintf(tmpname, sizeof(tmpname),
"%s/%s", workdir, base_lname);
}
if ((wn <= 0) || ((size_t)wn >= sizeof(tmpname))) {
logmsg_err("-l <file>: %s", strerror(EINVAL));
exit(EXIT_FAILURE);
}
wn = snprintf(cvsync_logname, sizeof(cvsync_logname),
"%s", tmpname);
if ((wn <= 0) ||
((size_t)wn >= sizeof(cvsync_logname))) {
logmsg_err("-l <file>: %s", strerror(EINVAL));
exit(EXIT_FAILURE);
}
if (!logmsg_open(cvsync_logname, false))
exit(EXIT_FAILURE);
}
if (!daemonize(cf->cf_pid_name, uid, gid)) {
logmsg_close();
exit(EXIT_FAILURE);
}
}
logmsg("Starting cvsync server");
if (level == CVSYNC_COMPRESS_LEVEL_UNSPEC)
cf->cf_compress_level = CVSYNC_COMPRESS_LEVEL_SPEED;
else
cf->cf_compress_level = level;
if (cf->cf_compress_level == CVSYNC_COMPRESS_LEVEL_NO)
cf->cf_compress = CVSYNC_COMPRESS_NO;
else
cf->cf_compress = CVSYNC_COMPRESS_ZLIB;
if (!cvsync_init()) {
pid_remove();
config_destroy(cf);
logmsg_close();
exit(EXIT_FAILURE);
}
if (pthread_attr_init(&attr) != 0) {
pid_remove();
config_destroy(cf);
logmsg_close();
exit(EXIT_FAILURE);
}
if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE) != 0) {
pthread_attr_destroy(&attr);
pid_remove();
config_destroy(cf);
logmsg_close();
exit(EXIT_FAILURE);
}
if (!access_init(cf->cf_maxclients)) {
pthread_attr_destroy(&attr);
pid_remove();
config_destroy(cf);
logmsg_close();
exit(EXIT_FAILURE);
}
socks = sock_listen((strlen(cf->cf_addr) == 0 ? NULL : cf->cf_addr),
cf->cf_serv);
if (socks == NULL) {
pthread_attr_destroy(&attr);
access_destroy();
pid_remove();
config_destroy(cf);
logmsg_close();
exit(EXIT_FAILURE);
}
if (!sock_init(socks)) {
pthread_attr_destroy(&attr);
access_destroy();
pid_remove();
config_destroy(cf);
sock_listen_stop(socks);
logmsg_close();
exit(EXIT_FAILURE);
}
for (;;) {
if (cvsync_isinterrupted())
break;
if ((stat(cf->cf_halt_name, &st) == 0) &&
(init_tic < st.st_mtime)) {
break;
}
if (!sock_select())
continue;
if (cf == NULL)
break;
if (config_ischanged(cf)) {
struct config *new_cf;
if ((new_cf = config_load(cvsync_confname)) != NULL) {
config_revoke(cf);
cf = new_cf;
logmsg_verbose("configuration: reloaded");
} else {
logmsg_err("configuration: failed to reload");
}
}
if ((sock = sock_accept()) == -1)
continue;
if ((flags = fcntl(sock, F_GETFL)) < 0) {
sock_close(sock);
continue;
}
if (fcntl(sock, F_SETFL, flags & ~O_NONBLOCK) == -1) {
sock_close(sock);
continue;
}
if ((sa = access_authorize(sock, cf)) == NULL) {
sock_close(sock);
continue;
}
if (pthread_create(&sa->sa_thread, NULL, server, sa) != 0) {
access_done(sa);
continue;
}
}
sock_destroy();
sock_listen_stop(socks);
if (!pid_remove())
status = EXIT_FAILURE;
access_destroy();
config_destroy(cf);
logmsg("Stop cvsync server");
logmsg_close();
if (pthread_attr_destroy(&attr) != 0)
exit(EXIT_FAILURE);
exit(status);
/* NOTREACHED */
}
void *
server(void *arg)
{
struct server_args *sa = arg;
struct dircmp_args *dca;
struct filecmp_args *fca;
struct collection *cls;
struct mux *mx;
uint32_t proto;
void *status;
int sock = sa->sa_socket, hash;
if (pthread_detach(pthread_self()) != 0) {
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if (!protocol_exchange(sock, sa->sa_status, sa->sa_error, &proto)) {
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if (sa->sa_status == ACL_DENY) {
access_done(sa);
return (CVSYNC_THREAD_SUCCESS);
}
if ((hash = hash_exchange(sock, sa->sa_config)) == HASH_UNSPEC) {
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if ((cls = collectionlist_exchange(sock, sa->sa_config)) == NULL) {
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if ((mx = channel_establish(sock, sa->sa_config, proto)) == NULL) {
collection_destroy_all(cls);
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if ((dca = dircmp_init(mx, sa->sa_hostinfo, cls, proto)) == NULL) {
mux_destroy(mx);
collection_destroy_all(cls);
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if ((fca = filecmp_init(mx, sa->sa_config->cf_collections, cls,
sa->sa_hostinfo, proto, hash)) == NULL) {
dircmp_destroy(dca);
mux_destroy(mx);
collection_destroy_all(cls);
access_done(sa);
return (CVSYNC_THREAD_FAILURE);
}
if (pthread_create(&mx->mx_receiver, &attr, receiver, mx) != 0)
mux_abort(mx);
if (pthread_create(&dca->dca_thread, &attr, dircmp, dca) != 0)
mux_abort(mx);
if (pthread_create(&fca->fca_thread, &attr, filecmp, fca) != 0)
mux_abort(mx);
if (pthread_join(fca->fca_thread, &fca->fca_status) != 0)
mux_abort(mx);
if (pthread_join(dca->dca_thread, &dca->dca_status) != 0)
mux_abort(mx);
if (pthread_join(mx->mx_receiver, &status) != 0)
mux_abort(mx);
if ((dca->dca_status == CVSYNC_THREAD_FAILURE) ||
(fca->fca_status == CVSYNC_THREAD_FAILURE) ||
(status == CVSYNC_THREAD_FAILURE)) {
logmsg_verbose("%s Failed", sa->sa_hostinfo);
} else {
logmsg_verbose("%s Finished successfully", sa->sa_hostinfo);
}
filecmp_destroy(fca);
dircmp_destroy(dca);
collection_destroy_all(cls);
logmsg("%s in=%" PRIu64 ", out=%" PRIu64 ", time=%ds", sa->sa_hostinfo,
mx->mx_xfer_in, mx->mx_xfer_out, time(NULL) - sa->sa_tick);
mux_destroy(mx);
access_done(sa);
return (CVSYNC_THREAD_SUCCESS);
}
void
usage(void)
{
logmsg_err("Usage: cvsyncd [-Vfhqv] [-c <file>] [-g <group>] "
"[-l <file>] [-p <file>] [-u <user>] [-w <directory>] "
"[-z <level>]");
logmsg_err("\tThe version: %u.%u.%u", CVSYNC_MAJOR, CVSYNC_MINOR,
CVSYNC_PATCHLEVEL);
logmsg_err("\tThe protocol version: %u.%u", CVSYNC_PROTO_MAJOR,
CVSYNC_PROTO_MINOR);
logmsg_err("\tThe default configuration file: %s",
CVSYNCD_DEFAULT_CONFIG);
logmsg_err("\tURL: %s", CVSYNC_URL);
exit(EXIT_FAILURE);
}
void
version(void)
{
logmsg_err("cvsyncd version %u.%u.%u (protocol %u.%u)",
CVSYNC_MAJOR, CVSYNC_MINOR, CVSYNC_PATCHLEVEL,
CVSYNC_PROTO_MAJOR, CVSYNC_PROTO_MINOR);
exit(EXIT_FAILURE);
}
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