*
* Copyright (C) 1998-2001 Andrew Tridgell <tridge@samba.org>
* Copyright (C) 2001-2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2002-2007 Wayne Davison
+ * Copyright (C) 2002-2008 Wayne Davison
*
* 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
#include "ifuncs.h"
extern int verbose;
+extern int dry_run;
extern int output_motd;
extern int list_only;
extern int am_sender;
extern int am_root;
extern int rsync_port;
extern int ignore_errors;
+extern int preserve_xattrs;
extern int kluge_around_eof;
extern int daemon_over_rsh;
extern int sanitize_paths;
+extern int numeric_ids;
extern int filesfrom_fd;
extern int remote_protocol;
extern int protocol_version;
extern int io_timeout;
extern int no_detach;
+extern int write_batch;
extern int default_af_hint;
extern int logfile_format_has_i;
extern int logfile_format_has_o_or_i;
extern struct chmod_mode_struct *chmod_modes;
extern struct filter_list_struct server_filter_list;
extern char curr_dir[];
+#ifdef ICONV_OPTION
+extern char *iconv_opt;
+extern iconv_t ic_send, ic_recv;
+#endif
char *auth_user;
int read_only = 0;
int module_id = -1;
+int munge_symlinks = 0;
struct chmod_mode_struct *daemon_chmod_modes;
/* module_dirlen is the length of the module_dir string when in daemon
- * mode, not chrooted, and the path is not "/"; otherwise 0. */
+ * mode and module_dir is not "/"; otherwise 0. (Note that a chroot-
+ * enabled module can have a non-"/" module_dir these days.) */
char *module_dir = NULL;
unsigned int module_dirlen = 0;
set_socket_options(fd, sockopts);
+#ifdef ICONV_CONST
+ setup_iconv();
+#endif
+
ret = start_inband_exchange(fd, fd, user, remote_argc, remote_argv);
return ret ? ret : client_run(fd, fd, -1, argc, argv);
int start_inband_exchange(int f_in, int f_out, const char *user, int argc, char *argv[])
{
- int i;
+ int i, modlen;
char line[BIGPATHBUFLEN];
char *sargs[MAX_ARGS];
int sargc = 0;
- char *p, *path = *argv;
+ char *p, *modname;
- if (argc == 0 && !am_sender)
- list_only |= 1;
+ assert(argc > 0);
- if (*path == '/') {
+ if (**argv == '/') {
rprintf(FERROR,
"ERROR: The remote path must start with a module name\n");
return -1;
}
+ if (!(p = strchr(*argv, '/')))
+ modlen = strlen(*argv);
+ else
+ modlen = p - *argv;
+
+ if (!(modname = new_array(char, modlen+1+1))) /* room for '/' & '\0' */
+ out_of_memory("start_inband_exchange");
+ strlcpy(modname, *argv, modlen + 1);
+ modname[modlen] = '/';
+ modname[modlen+1] = '\0';
+
if (!user)
user = getenv("USER");
if (!user)
if (exchange_protocols(f_in, f_out, line, sizeof line, 1) < 0)
return -1;
- 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 */
rprintf(FERROR, "internal: args[] overflowed in do_cmd()\n");
exit_cleanup(RERR_SYNTAX);
}
- sargs[sargc++] = *argv++;
+ if (strncmp(*argv, modname, modlen) == 0
+ && argv[0][modlen] == '\0')
+ sargs[sargc++] = modname; /* we send "modname/" */
+ else
+ sargs[sargc++] = *argv;
+ argv++;
argc--;
}
if (verbose > 1)
print_child_argv("sending daemon args:", sargs);
- p = strchr(path, '/');
- if (p) *p = '\0';
- io_printf(f_out, "%s\n", path);
- if (p) *p = '/';
+ io_printf(f_out, "%.*s\n", modlen, modname);
/* Old servers may just drop the connection here,
rather than sending a proper EXIT command. Yuck. */
io_start_multiplex_in();
}
+ free(modname);
+
return 0;
}
char *bp = buf, *eob = buf + limit - 1;
while (1) {
- if (read(fd, bp, 1) != 1)
+ int got = read(fd, bp, 1);
+ if (got != 1) {
+ if (got < 0 && errno == EINTR)
+ continue;
return -1;
+ }
if (*bp == '\0')
break;
if (bp < eob)
static int rsync_module(int f_in, int f_out, int i, char *addr, char *host)
{
int argc, opt_cnt;
- char **argv;
+ char **argv, *chroot_path = NULL;
char line[BIGPATHBUFLEN];
uid_t uid = (uid_t)-2; /* canonically "nobody" */
gid_t gid = (gid_t)-2;
pid_t pre_exec_pid = 0;
char *request = NULL;
+#ifdef ICONV_OPTION
+ iconv_opt = lp_charset(i);
+ if (*iconv_opt)
+ setup_iconv();
+ iconv_opt = NULL;
+#endif
+
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);
/* TODO: Perhaps take a list of gids, and make them into the
* supplementary groups. */
- /* We do a push_dir() without actually calling chdir() in order
- * to make sure that the module's path is absolute. After this
- * check, module_dir will be set to an absolute path. */
module_dir = lp_path(i);
+ if (use_chroot) {
+ if ((p = strstr(module_dir, "/./")) != NULL) {
+ *p = '\0';
+ p += 2;
+ } else if ((p = strdup("/")) == NULL)
+ out_of_memory("rsync_module");
+ }
+
+ /* We do a push_dir() that doesn't actually call chdir()
+ * just to make a relative path absolute. */
strlcpy(line, curr_dir, sizeof line);
if (!push_dir(module_dir, 1))
goto chdir_failed;
- if (strcmp(curr_dir, module_dir) != 0)
- module_dir = strdup(curr_dir);
+ if (strcmp(curr_dir, module_dir) != 0
+ && (module_dir = strdup(curr_dir)) == NULL)
+ out_of_memory("rsync_module");
push_dir(line, 1); /* Restore curr_dir. */
- if (use_chroot || (module_dirlen = strlen(module_dir)) == 1) {
+ if (use_chroot) {
+ chroot_path = module_dir;
+ module_dir = p; /* p is "/" or our inside-chroot path */
+ }
+ module_dirlen = clean_fname(module_dir, CFN_COLLAPSE_DOT_DOT_DIRS | CFN_DROP_TRAILING_DOT_DIR);
+
+ if (module_dirlen == 1) {
module_dirlen = 0;
set_filter_dir("/", 1);
} else
if (*lp_prexfer_exec(i) || *lp_postxfer_exec(i)) {
char *modname, *modpath, *hostaddr, *hostname, *username;
int status;
+
+ if (!use_chroot)
+ p = module_dir;
+ else if (module_dirlen) {
+ pathjoin(line, sizeof line, chroot_path, module_dir+1);
+ p = line;
+ } else
+ p = chroot_path;
+
if (asprintf(&modname, "RSYNC_MODULE_NAME=%s", name) < 0
- || asprintf(&modpath, "RSYNC_MODULE_PATH=%s", module_dir) < 0
+ || asprintf(&modpath, "RSYNC_MODULE_PATH=%s", p) < 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)
* a warning, unless a "require chroot" flag is set,
* in which case we fail.
*/
- if (chroot(module_dir)) {
- rsyserr(FLOG, errno, "chroot %s failed", module_dir);
+ if (chroot(chroot_path)) {
+ rsyserr(FLOG, errno, "chroot %s failed", chroot_path);
io_printf(f_out, "@ERROR: chroot failed\n");
return -1;
}
- if (!push_dir("/", 0))
+ if (!push_dir(module_dir, 0))
goto chdir_failed;
+ if (module_dirlen)
+ sanitize_paths = 1;
} else {
if (!push_dir(module_dir, 0)) {
chdir_failed:
sanitize_paths = 1;
}
+ if ((munge_symlinks = lp_munge_symlinks(i)) < 0)
+ munge_symlinks = !use_chroot || module_dirlen;
+ if (munge_symlinks) {
+ STRUCT_STAT st;
+ if (stat(SYMLINK_PREFIX, &st) == 0 && S_ISDIR(st.st_mode)) {
+ rprintf(FLOG, "Symlink munging is unsupported when a %s directory exists.\n",
+ SYMLINK_PREFIX);
+ io_printf(f_out, "@ERROR: daemon security issue -- contact admin\n", name);
+ exit_cleanup(RERR_UNSUPPORTED);
+ }
+ }
+
if (am_root) {
/* XXXX: You could argue that if the daemon is started
* by a non-root user and they explicitly specify a
am_server = 1; /* Don't let someone try to be tricky. */
if (lp_ignore_errors(module_id))
ignore_errors = 1;
+ if (write_batch < 0)
+ dry_run = 1;
- if (lp_fake_super(i))
+ if (lp_fake_super(i)) {
+ if (preserve_xattrs > 1)
+ preserve_xattrs = 1;
am_root = -1;
- else if (am_root < 0) /* Treat --fake-super from client as --super. */
+ } else if (am_root < 0) /* Treat --fake-super from client as --super. */
am_root = 2;
if (filesfrom_fd == 0)
exit_cleanup(RERR_UNSUPPORTED);
}
+#ifdef ICONV_OPTION
+ if (!iconv_opt) {
+ if (ic_send != (iconv_t)-1) {
+ iconv_close(ic_send);
+ ic_send = (iconv_t)-1;
+ }
+ if (ic_recv != (iconv_t)-1) {
+ iconv_close(ic_recv);
+ ic_recv = (iconv_t)-1;
+ }
+ }
+#endif
+
+ if (!numeric_ids
+ && (use_chroot ? lp_numeric_ids(i) != False : lp_numeric_ids(i) == True))
+ numeric_ids = -1; /* Set --numeric-ids w/o breaking protocol. */
+
if (lp_timeout(i) && lp_timeout(i) > io_timeout)
set_io_timeout(lp_timeout(i));
io_printf(fd,"@RSYNCD: EXIT\n");
}
+static int load_config(int globals_only)
+{
+ if (!config_file) {
+ if (am_server && am_root <= 0)
+ config_file = RSYNCD_USERCONF;
+ else
+ config_file = RSYNCD_SYSCONF;
+ }
+ return lp_load(config_file, globals_only);
+}
+
/* 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 */
* might cause log-file output to occur. This ensures that the
* "log file" param gets honored for the 2 non-forked use-cases
* (when rsync is run by init and run by a remote shell). */
- if (!lp_load(config_file, 0))
+ if (!load_config(0))
exit_cleanup(RERR_SYNTAX);
addr = client_addr(f_in);
return rsync_module(f_in, f_out, i, addr, host);
}
-static void create_pid_file(pid_t pid)
+static void create_pid_file(void)
{
char *pid_file = lp_pid_file();
char pidbuf[16];
+ pid_t pid = getpid();
int fd;
if (!pid_file || !*pid_file)
return;
cleanup_set_pid(pid);
- if ((fd = do_open(pid_file, O_WRONLY|O_CREAT|O_TRUNC, 0666 & ~orig_umask)) == -1) {
+ if ((fd = do_open(pid_file, O_WRONLY|O_CREAT|O_EXCL, 0666 & ~orig_umask)) == -1) {
cleanup_set_pid(0);
+ fprintf(stderr, "failed to create pid file %s: %s\n", pid_file, strerror(errno));
rsyserr(FLOG, errno, "failed to create pid file %s", pid_file);
exit_cleanup(RERR_FILEIO);
}
pid_t pid = fork();
if (pid) {
- create_pid_file(pid);
+ if (pid < 0) {
+ fprintf(stderr, "failed to fork: %s\n", strerror(errno));
+ exit_cleanup(RERR_FILEIO);
+ }
_exit(0);
}
+ create_pid_file();
+
/* detach from the terminal */
#ifdef HAVE_SETSID
setsid();
return start_daemon(STDIN_FILENO, STDIN_FILENO);
}
- if (!lp_load(config_file, 1)) {
+ if (!load_config(1)) {
fprintf(stderr, "Failed to parse config file: %s\n", config_file);
exit_cleanup(RERR_SYNTAX);
}
if (no_detach)
- create_pid_file(getpid());
+ create_pid_file();
else
become_daemon();
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff