-/*
- Copyright (C) Andrew Tridgell 1998
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* the socket based protocol for setting up a connection wit rsyncd */
+/* -*- c-file-style: "linux"; -*-
+ *
+ * Copyright (C) 1998-2001 by Andrew Tridgell <tridge@samba.org>
+ * Copyright (C) 2001-2002 by Martin Pool <mbp@samba.org>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/**
+ * @file
+ *
+ * The socket based protocol for setting up a connection with
+ * rsyncd.
+ **/
#include "rsync.h"
-extern int module_id;
-extern int read_only;
extern int verbose;
+extern int list_only;
+extern int am_sender;
+extern int am_server;
+extern int am_daemon;
+extern int am_root;
extern int rsync_port;
-
+extern int kluge_around_eof;
+extern int daemon_over_rsh;
+extern int sanitize_paths;
+extern int filesfrom_fd;
+extern int remote_protocol;
+extern int protocol_version;
+extern int io_timeout;
+extern int orig_umask;
+extern int no_detach;
+extern int default_af_hint;
+extern char *bind_address;
+extern struct filter_list_struct server_filter_list;
+extern char *config_file;
+extern char *files_from;
+
+char *auth_user;
+int read_only = 0;
+int daemon_log_format_has_i = 0;
+int daemon_log_format_has_o_or_i = 0;
+int module_id = -1;
+
+/* Length of lp_path() string when in daemon mode & not chrooted, else 0. */
+unsigned int module_dirlen = 0;
+
+/**
+ * Run a client connected to an rsyncd. The alternative to this
+ * function for remote-shell connections is do_cmd().
+ *
+ * After negotiating which module to use and reading the server's
+ * motd, this hands over to client_run(). Telling the server the
+ * module will cause it to chroot/setuid/etc.
+ *
+ * Instead of doing a transfer, the client may at this stage instead
+ * get a listing of remote modules and exit.
+ *
+ * @return -1 for error in startup, or the result of client_run().
+ * Either way, it eventually gets passed to exit_cleanup().
+ **/
int start_socket_client(char *host, char *path, int argc, char *argv[])
{
- int fd, i;
+ int fd, ret;
+ char *p, *user = NULL;
+
+ /* This is redundant with code in start_inband_exchange(), but this
+ * short-circuits a problem in the client before we open a socket,
+ * and the extra check won't hurt. */
+ if (*path == '/') {
+ rprintf(FERROR,
+ "ERROR: The remote path must start with a module name not a /\n");
+ return -1;
+ }
+
+ if ((p = strrchr(host, '@')) != NULL) {
+ user = host;
+ host = p+1;
+ *p = '\0';
+ }
+
+ fd = open_socket_out_wrapped(host, rsync_port, bind_address,
+ default_af_hint);
+ if (fd == -1)
+ exit_cleanup(RERR_SOCKETIO);
+
+ ret = start_inband_exchange(user, path, fd, fd, argc);
+
+ return ret ? ret : client_run(fd, fd, -1, argc, argv);
+}
+
+int start_inband_exchange(char *user, char *path, int f_in, int f_out,
+ int argc)
+{
+ int i;
char *sargs[MAX_ARGS];
- int sargc=0;
- char line[1024];
+ int sargc = 0;
+ char line[BIGPATHBUFLEN];
char *p;
- int version;
- fd = open_socket_out(host, rsync_port);
- if (fd == -1) {
- exit_cleanup(1);
+ if (argc == 0 && !am_sender)
+ list_only |= 1;
+
+ if (*path == '/') {
+ rprintf(FERROR,
+ "ERROR: The remote path must start with a module name\n");
+ return -1;
}
-
- server_options(sargs,&sargc);
+
+ if (!user)
+ user = getenv("USER");
+ if (!user)
+ user = getenv("LOGNAME");
+
+ io_printf(f_out, "@RSYNCD: %d\n", protocol_version);
+
+ if (!read_line(f_in, line, sizeof line - 1)) {
+ rprintf(FERROR, "rsync: did not see server greeting\n");
+ return -1;
+ }
+
+ if (sscanf(line,"@RSYNCD: %d", &remote_protocol) != 1) {
+ /* note that read_line strips of \n or \r */
+ rprintf(FERROR, "rsync: server sent \"%s\" rather than greeting\n",
+ line);
+ return -1;
+ }
+ if (protocol_version > remote_protocol)
+ protocol_version = remote_protocol;
+
+ if (list_only && protocol_version >= 29)
+ list_only |= 2;
+
+ /* set daemon_over_rsh to false since we need to build the
+ * true set of args passed through the rsh/ssh connection;
+ * this is a no-op for direct-socket-connection mode */
+ daemon_over_rsh = 0;
+ server_options(sargs, &sargc);
sargs[sargc++] = ".";
- if (path && *path)
+ if (path && *path)
sargs[sargc++] = path;
sargs[sargc] = NULL;
+ if (verbose > 1)
+ print_child_argv(sargs);
+
p = strchr(path,'/');
if (p) *p = 0;
- io_printf(fd,"%s\n",path);
+ io_printf(f_out, "%s\n", path);
if (p) *p = '/';
- if (!read_line(fd, line, sizeof(line)-1)) {
- return -1;
- }
-
- if (sscanf(line,"@RSYNCD: %d", &version) != 1) {
- return -1;
- }
+ /* Old servers may just drop the connection here,
+ rather than sending a proper EXIT command. Yuck. */
+ kluge_around_eof = list_only && protocol_version < 25 ? 1 : 0;
while (1) {
- if (!read_line(fd, line, sizeof(line)-1)) {
+ if (!read_line(f_in, line, sizeof line - 1)) {
+ rprintf(FERROR, "rsync: didn't get server startup line\n");
return -1;
}
- if (strcmp(line,"@RSYNCD: OK") == 0) break;
- rprintf(FINFO,"%s\n", line);
- }
- for (i=0;i<sargc;i++) {
- io_printf(fd,"%s\n", sargs[i]);
- }
- io_printf(fd,"\n");
+ if (strncmp(line,"@RSYNCD: AUTHREQD ",18) == 0) {
+ auth_client(f_out, user, line+18);
+ continue;
+ }
-#if 0
- while (1) {
- if (!read_line(fd, line, sizeof(line)-1)) {
+ if (strcmp(line,"@RSYNCD: OK") == 0)
+ break;
+
+ if (strcmp(line,"@RSYNCD: EXIT") == 0) {
+ /* This is sent by recent versions of the
+ * server to terminate the listing of modules.
+ * We don't want to go on and transfer
+ * anything; just exit. */
+ exit(0);
+ }
+
+ if (strncmp(line, "@ERROR", 6) == 0) {
+ rprintf(FERROR, "%s\n", line);
+ /* This is always fatal; the server will now
+ * close the socket. */
return -1;
}
- rprintf(FINFO,"%s\n", line);
+
+ rprintf(FINFO, "%s\n", line);
}
-#endif
+ kluge_around_eof = 0;
+
+ for (i = 0; i < sargc; i++) {
+ io_printf(f_out, "%s\n", sargs[i]);
+ }
+ io_printf(f_out, "\n");
- return client_run(fd, fd, -1, argc, argv);
+ if (protocol_version < 23) {
+ if (protocol_version == 22 || !am_sender)
+ io_start_multiplex_in();
+ }
+
+ return 0;
}
-static int rsync_module(int fd, int i)
+static int rsync_module(int f_in, int f_out, int i)
{
- int argc=0;
- char *argv[MAX_ARGS];
- char **argp;
- char line[1024];
+ int argc = 0;
+ int maxargs;
+ char **argv;
+ char line[BIGPATHBUFLEN];
+ uid_t uid = (uid_t)-2; /* canonically "nobody" */
+ gid_t gid = (gid_t)-2;
+ char *p;
+#ifdef HAVE_PUTENV
+ char *s;
+#endif
+ char *addr = client_addr(f_in);
+ char *host = client_name(f_in);
+ char *name = lp_name(i);
+ int use_chroot = lp_use_chroot(i);
+ int start_glob = 0;
+ int ret;
+ char *request = NULL;
+
+ if (!allow_access(addr, host, lp_hosts_allow(i), lp_hosts_deny(i))) {
+ rprintf(FLOG, "rsync denied on module %s from %s (%s)\n",
+ name, host, addr);
+ if (!lp_list(i))
+ io_printf(f_out, "@ERROR: Unknown module '%s'\n", name);
+ else {
+ io_printf(f_out,
+ "@ERROR: access denied to %s from %s (%s)\n",
+ name, host, addr);
+ }
+ return -1;
+ }
- module_id = i;
+ if (am_daemon && am_server) {
+ rprintf(FLOG, "rsync allowed access on module %s from %s (%s)\n",
+ name, host, addr);
+ }
- if (lp_read_only(i))
- read_only = 1;
+ if (!claim_connection(lp_lock_file(i), lp_max_connections(i))) {
+ if (errno) {
+ rsyserr(FLOG, errno, "failed to open lock file %s",
+ safe_fname(lp_lock_file(i)));
+ io_printf(f_out, "@ERROR: failed to open lock file\n");
+ } else {
+ rprintf(FLOG, "max connections (%d) reached\n",
+ lp_max_connections(i));
+ io_printf(f_out, "@ERROR: max connections (%d) reached -- try again later\n",
+ lp_max_connections(i));
+ }
+ return -1;
+ }
- rprintf(FERROR,"rsyncd starting\n");
+ auth_user = auth_server(f_in, f_out, i, host, addr, "@RSYNCD: AUTHREQD ");
- if (chroot(lp_path(i))) {
- io_printf(fd,"@ERROR: chroot failed\n");
+ if (!auth_user) {
+ io_printf(f_out, "@ERROR: auth failed on module %s\n", name);
return -1;
}
- if (chdir("/")) {
- io_printf(fd,"@ERROR: chdir failed\n");
- return -1;
+ module_id = i;
+
+ if (lp_read_only(i))
+ read_only = 1;
+
+ if (lp_transfer_logging(i)) {
+ if (log_format_has(lp_log_format(i), 'i'))
+ daemon_log_format_has_i = 1;
+ if (daemon_log_format_has_i
+ || log_format_has(lp_log_format(i), 'o'))
+ daemon_log_format_has_o_or_i = 1;
}
- if (setgid(lp_gid(i))) {
- io_printf(fd,"@ERROR: setgid failed\n");
- return -1;
+ am_root = (MY_UID() == 0);
+
+ if (am_root) {
+ p = lp_uid(i);
+ if (!name_to_uid(p, &uid)) {
+ if (!isdigit(*(unsigned char *)p)) {
+ rprintf(FLOG, "Invalid uid %s\n", p);
+ io_printf(f_out, "@ERROR: invalid uid %s\n", p);
+ return -1;
+ }
+ uid = atoi(p);
+ }
+
+ p = lp_gid(i);
+ if (!name_to_gid(p, &gid)) {
+ if (!isdigit(*(unsigned char *)p)) {
+ rprintf(FLOG, "Invalid gid %s\n", p);
+ io_printf(f_out, "@ERROR: invalid gid %s\n", p);
+ return -1;
+ }
+ gid = atoi(p);
+ }
}
- if (setuid(lp_uid(i))) {
- io_printf(fd,"@ERROR: setuid failed\n");
- return -1;
+ /* TODO: If we're not root, but the configuration requests
+ * that we change to some uid other than the current one, then
+ * log a warning. */
+
+ /* TODO: Perhaps take a list of gids, and make them into the
+ * supplementary groups. */
+
+ if (use_chroot || (module_dirlen = strlen(lp_path(i))) == 1) {
+ module_dirlen = 0;
+ set_filter_dir("/", 1);
+ } else
+ set_filter_dir(lp_path(i), module_dirlen);
+
+ p = lp_filter(i);
+ parse_rule(&server_filter_list, p, MATCHFLG_WORD_SPLIT,
+ XFLG_ANCHORED2ABS);
+
+ p = lp_include_from(i);
+ parse_filter_file(&server_filter_list, p, MATCHFLG_INCLUDE,
+ XFLG_ANCHORED2ABS | XFLG_OLD_PREFIXES | XFLG_FATAL_ERRORS);
+
+ p = lp_include(i);
+ parse_rule(&server_filter_list, p,
+ MATCHFLG_INCLUDE | MATCHFLG_WORD_SPLIT,
+ XFLG_ANCHORED2ABS | XFLG_OLD_PREFIXES);
+
+ p = lp_exclude_from(i);
+ parse_filter_file(&server_filter_list, p, 0,
+ XFLG_ANCHORED2ABS | XFLG_OLD_PREFIXES | XFLG_FATAL_ERRORS);
+
+ p = lp_exclude(i);
+ parse_rule(&server_filter_list, p, MATCHFLG_WORD_SPLIT,
+ XFLG_ANCHORED2ABS | XFLG_OLD_PREFIXES);
+
+ log_init();
+
+#ifdef HAVE_PUTENV
+ s = lp_prexfer_exec(i);
+ p = lp_postxfer_exec(i);
+ if ((s && *s) || (p && *p)) {
+ char *modname, *modpath, *hostaddr, *hostname, *username;
+ int status;
+ if (asprintf(&modname, "RSYNC_MODULE_NAME=%s", name) < 0
+ || asprintf(&modpath, "RSYNC_MODULE_PATH=%s", lp_path(i)) < 0
+ || asprintf(&hostaddr, "RSYNC_HOST_ADDR=%s", addr) < 0
+ || asprintf(&hostname, "RSYNC_HOST_NAME=%s", host) < 0
+ || asprintf(&username, "RSYNC_USER_NAME=%s", auth_user) < 0)
+ out_of_memory("rsync_module");
+ putenv(modname);
+ putenv(modpath);
+ putenv(hostaddr);
+ putenv(hostname);
+ putenv(username);
+ umask(orig_umask);
+ if (s && *s) {
+ status = system(s);
+ if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
+ rprintf(FLOG, "prexfer-exec failed\n");
+ io_printf(f_out, "@ERROR: prexfer-exec failed\n");
+ return -1;
+ }
+ }
+ if (p && *p) {
+ pid_t pid = fork();
+ if (pid < 0) {
+ rsyserr(FLOG, errno, "fork failed");
+ io_printf(f_out, "@ERROR: fork failed\n");
+ return -1;
+ }
+ if (pid) {
+ char *ret1, *ret2;
+ waitpid(pid, &status, 0);
+ if (asprintf(&ret1, "RSYNC_RAW_STATUS=%d", status) > 0)
+ putenv(ret1);
+ if (WIFEXITED(status))
+ status = WEXITSTATUS(status);
+ else
+ status = -1;
+ if (asprintf(&ret2, "RSYNC_EXIT_STATUS=%d", status) > 0)
+ putenv(ret2);
+ system(p);
+ _exit(status);
+ }
+ }
+ umask(0);
}
+#endif
- io_printf(fd,"@RSYNCD: OK\n");
+ if (use_chroot) {
+ /*
+ * XXX: The 'use chroot' flag is a fairly reliable
+ * source of confusion, because it fails under two
+ * important circumstances: running as non-root,
+ * running on Win32 (or possibly others). On the
+ * other hand, if you are running as root, then it
+ * might be better to always use chroot.
+ *
+ * So, perhaps if we can't chroot we should just issue
+ * a warning, unless a "require chroot" flag is set,
+ * in which case we fail.
+ */
+ if (chroot(lp_path(i))) {
+ rsyserr(FLOG, errno, "chroot %s failed",
+ safe_fname(lp_path(i)));
+ io_printf(f_out, "@ERROR: chroot failed\n");
+ return -1;
+ }
- argv[argc++] = "rsyncd";
+ if (!push_dir("/")) {
+ rsyserr(FLOG, errno, "chdir %s failed\n",
+ safe_fname(lp_path(i)));
+ io_printf(f_out, "@ERROR: chdir failed\n");
+ return -1;
+ }
- while (1) {
- if (!read_line(fd, line, sizeof(line)-1)) {
+ } else {
+ if (!push_dir(lp_path(i))) {
+ rsyserr(FLOG, errno, "chdir %s failed\n",
+ safe_fname(lp_path(i)));
+ io_printf(f_out, "@ERROR: chdir failed\n");
return -1;
}
+ sanitize_paths = 1;
+ }
+
+ if (am_root) {
+ /* XXXX: You could argue that if the daemon is started
+ * by a non-root user and they explicitly specify a
+ * gid, then we should try to change to that gid --
+ * this could be possible if it's already in their
+ * supplementary groups. */
- if (!*line) break;
+ /* TODO: Perhaps we need to document that if rsyncd is
+ * started by somebody other than root it will inherit
+ * all their supplementary groups. */
- argv[argc] = strdup(line);
- if (!argv[argc]) {
+ if (setgid(gid)) {
+ rsyserr(FLOG, errno, "setgid %d failed", (int)gid);
+ io_printf(f_out, "@ERROR: setgid failed\n");
+ return -1;
+ }
+#ifdef HAVE_SETGROUPS
+ /* Get rid of any supplementary groups this process
+ * might have inheristed. */
+ if (setgroups(1, &gid)) {
+ rsyserr(FLOG, errno, "setgroups failed");
+ io_printf(f_out, "@ERROR: setgroups failed\n");
return -1;
}
+#endif
- argc++;
- if (argc == MAX_ARGS) {
+ if (setuid(uid)) {
+ rsyserr(FLOG, errno, "setuid %d failed", (int)uid);
+ io_printf(f_out, "@ERROR: setuid failed\n");
return -1;
}
+
+ am_root = (MY_UID() == 0);
}
- parse_arguments(argc, argv);
+ io_printf(f_out, "@RSYNCD: OK\n");
+
+ maxargs = MAX_ARGS;
+ if (!(argv = new_array(char *, maxargs)))
+ out_of_memory("rsync_module");
+ argv[argc++] = "rsyncd";
+ while (1) {
+ if (!read_line(f_in, line, sizeof line - 1))
+ return -1;
+
+ if (!*line)
+ break;
+
+ p = line;
+
+ if (argc == maxargs) {
+ maxargs += MAX_ARGS;
+ if (!(argv = realloc_array(argv, char *, maxargs)))
+ out_of_memory("rsync_module");
+ }
+ if (!(argv[argc] = strdup(p)))
+ out_of_memory("rsync_module");
+
+ switch (start_glob) {
+ case 0:
+ argc++;
+ if (strcmp(line, ".") == 0)
+ start_glob = 1;
+ break;
+ case 1:
+ request = strdup(p);
+ start_glob = 2;
+ /* FALL THROUGH */
+ default:
+ glob_expand(name, &argv, &argc, &maxargs);
+ break;
+ }
+ }
+
+ verbose = 0; /* future verbosity is controlled by client options */
+ ret = parse_arguments(&argc, (const char ***) &argv, 0);
+
+ if (filesfrom_fd == 0)
+ filesfrom_fd = f_in;
+
+ if (request) {
+ if (*auth_user) {
+ rprintf(FLOG, "rsync %s %s from %s@%s (%s)\n",
+ am_sender ? "on" : "to",
+ request, auth_user, host, addr);
+ } else {
+ rprintf(FLOG, "rsync %s %s from %s (%s)\n",
+ am_sender ? "on" : "to",
+ request, host, addr);
+ }
+ free(request);
+ }
+
+#ifndef DEBUG
/* don't allow the logs to be flooded too fast */
- if (verbose > 1) verbose = 1;
+ if (verbose > lp_max_verbosity(i))
+ verbose = lp_max_verbosity(i);
+#endif
- argc -= optind;
- argp = argv + optind;
- optind = 0;
+ if (protocol_version < 23
+ && (protocol_version == 22 || am_sender))
+ io_start_multiplex_out();
+ else if (!ret) {
+ /* We have to get I/O multiplexing started so that we can
+ * get the error back to the client. This means getting
+ * the protocol setup finished first in later versions. */
+ setup_protocol(f_out, f_in);
+ if (!am_sender) {
+ /* Since we failed in our option parsing, we may not
+ * have finished parsing that the client sent us a
+ * --files-from option, so look for it manually.
+ * Without this, the socket would be in the wrong
+ * state for the upcoming error message. */
+ if (!files_from) {
+ int i;
+ for (i = 0; i < argc; i++) {
+ if (strncmp(argv[i], "--files-from", 12) == 0) {
+ files_from = "";
+ break;
+ }
+ }
+ }
+ if (files_from)
+ write_byte(f_out, 0);
+ }
+ io_start_multiplex_out();
+ }
+
+ if (!ret) {
+ option_error();
+ msleep(400);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
- start_server(fd, fd, argc, argp);
+ if (lp_timeout(i) && lp_timeout(i) > io_timeout)
+ set_io_timeout(lp_timeout(i));
+
+ start_server(f_in, f_out, argc, argv);
return 0;
}
+/* send a list of available modules to the client. Don't list those
+ with "list = False". */
static void send_listing(int fd)
{
int n = lp_numservices();
int i;
-
- for (i=0;i<n;i++)
+
+ for (i = 0; i < n; i++) {
if (lp_list(i))
- io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i));
+ io_printf(fd, "%-15s\t%s\n", lp_name(i), lp_comment(i));
+ }
+
+ if (protocol_version >= 25)
+ io_printf(fd,"@RSYNCD: EXIT\n");
}
-/* this is called when a socket connection is established to a client
+/* this is called when a connection is established to a client
and we want to start talking. The setup of the system is done from
here */
-static int start_daemon(int fd)
+int start_daemon(int f_in, int f_out)
{
char line[1024];
char *motd;
+ int i;
- set_socket_options(fd,"SO_KEEPALIVE");
+ io_set_sock_fds(f_in, f_out);
+
+ if (!lp_load(config_file, 0))
+ exit_cleanup(RERR_SYNTAX);
+
+ log_init();
+
+ if (!am_server) {
+ set_socket_options(f_in, "SO_KEEPALIVE");
+ set_socket_options(f_in, lp_socket_options());
+ set_nonblocking(f_in);
+ }
- io_printf(fd,"@RSYNCD: %d\n", PROTOCOL_VERSION);
+ io_printf(f_out, "@RSYNCD: %d\n", protocol_version);
motd = lp_motd_file();
- if (*motd) {
+ if (motd && *motd) {
FILE *f = fopen(motd,"r");
while (f && !feof(f)) {
- int len = fread(line, 1, sizeof(line)-1, f);
+ int len = fread(line, 1, sizeof line - 1, f);
if (len > 0) {
line[len] = 0;
- io_printf(fd,"%s", line);
+ io_printf(f_out, "%s", line);
}
}
- if (f) fclose(f);
- io_printf(fd,"\n");
+ if (f)
+ fclose(f);
+ io_printf(f_out, "\n");
}
- /* read a single line indicating the resource that is wanted */
- while (1) {
- int i;
+ if (!read_line(f_in, line, sizeof line - 1))
+ return -1;
- line[0] = 0;
- if (!read_line(fd, line, sizeof(line)-1)) {
- return -1;
- }
+ if (sscanf(line,"@RSYNCD: %d", &remote_protocol) != 1) {
+ io_printf(f_out, "@ERROR: protocol startup error\n");
+ return -1;
+ }
+ if (protocol_version > remote_protocol)
+ protocol_version = remote_protocol;
- if (!*line || strcmp(line,"#list")==0) {
- send_listing(fd);
- return -1;
- }
+ line[0] = 0;
+ if (!read_line(f_in, line, sizeof line - 1))
+ return -1;
- if (*line == '#') {
- /* it's some sort of command that I don't understand */
- io_printf(fd,"ERROR: Unknown command '%s'\n", line);
- return -1;
- }
+ if (!*line || strcmp(line, "#list") == 0) {
+ send_listing(f_out);
+ return -1;
+ }
- i = lp_number(line);
- if (i == -1) {
- io_printf(fd,"ERROR: Unknown module '%s'\n", line);
- return -1;
- }
+ if (*line == '#') {
+ /* it's some sort of command that I don't understand */
+ io_printf(f_out, "@ERROR: Unknown command '%s'\n", line);
+ return -1;
+ }
- return rsync_module(fd, i);
+ if ((i = lp_number(line)) < 0) {
+ char *addr = client_addr(f_in);
+ char *host = client_name(f_in);
+ rprintf(FLOG, "unknown module '%s' tried from %s (%s)\n",
+ line, host, addr);
+ io_printf(f_out, "@ERROR: Unknown module '%s'\n", line);
+ return -1;
}
- return 0;
+ return rsync_module(f_in, f_out, i);
}
int daemon_main(void)
{
- if (!lp_load(RSYNCD_CONF)) {
- exit_cleanup(1);
- }
+ char *pid_file;
if (is_a_socket(STDIN_FILENO)) {
- /* we are running via inetd */
- return start_daemon(STDIN_FILENO);
+ int i;
+
+ /* we are running via inetd - close off stdout and
+ * stderr so that library functions (and getopt) don't
+ * try to use them. Redirect them to /dev/null */
+ for (i = 1; i < 3; i++) {
+ close(i);
+ open("/dev/null", O_RDWR);
+ }
+
+ return start_daemon(STDIN_FILENO, STDIN_FILENO);
}
- become_daemon();
+ if (!no_detach)
+ become_daemon();
+
+ if (!lp_load(config_file, 1))
+ exit_cleanup(RERR_SYNTAX);
+
+ if (rsync_port == 0 && (rsync_port = lp_rsync_port()) == 0)
+ rsync_port = RSYNC_PORT;
+ if (bind_address == NULL && *lp_bind_address())
+ bind_address = lp_bind_address();
+
+ log_init();
+
+ rprintf(FLOG, "rsyncd version %s starting, listening on port %d\n",
+ RSYNC_VERSION, rsync_port);
+ /* TODO: If listening on a particular address, then show that
+ * address too. In fact, why not just do inet_ntop on the
+ * local address??? */
+
+ if (((pid_file = lp_pid_file()) != NULL) && (*pid_file != '\0')) {
+ char pidbuf[16];
+ int fd;
+ pid_t pid = getpid();
+ cleanup_set_pid(pid);
+ if ((fd = do_open(lp_pid_file(), O_WRONLY|O_CREAT|O_TRUNC,
+ 0666 & ~orig_umask)) == -1) {
+ cleanup_set_pid(0);
+ rsyserr(FLOG, errno, "failed to create pid file %s",
+ safe_fname(pid_file));
+ exit_cleanup(RERR_FILEIO);
+ }
+ snprintf(pidbuf, sizeof pidbuf, "%ld\n", (long)pid);
+ write(fd, pidbuf, strlen(pidbuf));
+ close(fd);
+ }
- return start_accept_loop(rsync_port, start_daemon);
+ start_accept_loop(rsync_port, start_daemon);
+ return -1;
}
-