-/* -*- c-file-style: "linux" -*-
-
- rsync -- fast file replication program
-
- Copyright (C) 1992-2001 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 socket.c
- *
+/*
* Socket functions used in rsync.
*
- * This file is now converted to use the new-style getaddrinfo()
+ * Copyright (C) 1992-2001 Andrew Tridgell <tridge@samba.org>
+ * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
+ * Copyright (C) 2003, 2004, 2005, 2006 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
+ * 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.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/* This file is now converted to use the new-style getaddrinfo()
* interface, which supports IPv6 but is also supported on recent
* IPv4-only machines. On systems that don't have that interface, we
- * emulate it using the KAME implementation.
- **/
+ * emulate it using the KAME implementation. */
#include "rsync.h"
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
extern char *bind_address;
extern int default_af_hint;
+#ifdef HAVE_SIGACTION
+static struct sigaction sigact;
+#endif
+
/**
* Establish a proxy connection on an open socket to a web proxy by
* using the CONNECT method. If proxy_user and proxy_pass are not NULL,
proxy_user, ":", proxy_pass, NULL);
len = strlen(buffer);
- if ((len*8 + 5) / 6 >= (int)sizeof authbuf) {
+ if ((len*8 + 5) / 6 >= (int)sizeof authbuf - 3) {
rprintf(FERROR,
"authentication information is too long\n");
return -1;
}
- base64_encode(buffer, len, authbuf);
+ base64_encode(buffer, len, authbuf, 1);
authhdr = "\r\nProxy-Authorization: Basic ";
} else {
*authbuf = '\0';
int af_hint)
{
int one = 1;
- int s, *socks, maxs, i;
+ int s, *socks, maxs, i, ecnt;
struct addrinfo hints, *all_ai, *resp;
- char portbuf[10];
+ char portbuf[10], **errmsgs;
int error;
memset(&hints, 0, sizeof hints);
/* Count max number of sockets we might open. */
for (maxs = 0, resp = all_ai; resp; resp = resp->ai_next, maxs++) {}
- if (!(socks = new_array(int, maxs + 1)))
+ socks = new_array(int, maxs + 1);
+ errmsgs = new_array(char *, maxs);
+ if (!socks || !errmsgs)
out_of_memory("open_socket_in");
/* We may not be able to create the socket, if for example the
* machine knows about IPv6 in the C library, but not in the
* kernel. */
- for (resp = all_ai, i = 0; resp; resp = resp->ai_next) {
+ for (resp = all_ai, i = ecnt = 0; resp; resp = resp->ai_next) {
s = socket(resp->ai_family, resp->ai_socktype,
resp->ai_protocol);
if (s == -1) {
+ int r = asprintf(&errmsgs[ecnt++],
+ "socket(%d,%d,%d) failed: %s\n",
+ (int)resp->ai_family, (int)resp->ai_socktype,
+ (int)resp->ai_protocol, strerror(errno));
+ if (r < 0)
+ out_of_memory("open_socket_in");
/* See if there's another address that will work... */
continue;
}
/* Now we've got a socket - we need to bind it. */
if (bind(s, resp->ai_addr, resp->ai_addrlen) < 0) {
/* Nope, try another */
+ int r = asprintf(&errmsgs[ecnt++],
+ "bind() failed: %s (address-family %d)\n",
+ strerror(errno), (int)resp->ai_family);
+ if (r < 0)
+ out_of_memory("open_socket_in");
close(s);
continue;
}
if (all_ai)
freeaddrinfo(all_ai);
+ /* Only output the socket()/bind() messages if we were totally
+ * unsuccessful, or if the daemon is being run with -vv. */
+ for (s = 0; s < ecnt; s++) {
+ if (!i || verbose > 1)
+ rwrite(FLOG, errmsgs[s], strlen(errmsgs[s]));
+ free(errmsgs[s]);
+ }
+ free(errmsgs);
+
if (!i) {
rprintf(FERROR,
"unable to bind any inbound sockets on port %d\n",
#ifdef WNOHANG
while (waitpid(-1, NULL, WNOHANG) > 0) {}
#endif
+#ifndef HAVE_SIGACTION
signal(SIGCHLD, sigchld_handler);
+#endif
}
fd_set deffds;
int *sp, maxfd, i;
+#ifdef HAVE_SIGACTION
+ sigact.sa_flags = SA_NOCLDSTOP;
+#endif
+
/* open an incoming socket */
sp = open_socket_in(SOCK_STREAM, port, bind_address, default_af_hint);
if (sp == NULL)
if (fd < 0)
continue;
- signal(SIGCHLD, sigchld_handler);
+ SIGACTION(SIGCHLD, sigchld_handler);
if ((pid = fork()) == 0) {
int ret;