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authorColin Watson <cjwatson@debian.org>2007-06-12 16:16:35 +0000
committerColin Watson <cjwatson@debian.org>2007-06-12 16:16:35 +0000
commitb7e40fa9da0b5491534a429dadb321eab5a77558 (patch)
treebed1da11e9f829925797aa093e379fc0b5868ecd /canohost.c
parent4f84beedf1005e44ff33c854abd6b711ffc0adb7 (diff)
parent086ea76990b1e6287c24b6db74adffd4605eb3b0 (diff)
* New upstream release (closes: #395507, #397961, #420035). Important
changes not previously backported to 4.3p2: - 4.4/4.4p1 (http://www.openssh.org/txt/release-4.4): + On portable OpenSSH, fix a GSSAPI authentication abort that could be used to determine the validity of usernames on some platforms. + Implemented conditional configuration in sshd_config(5) using the "Match" directive. This allows some configuration options to be selectively overridden if specific criteria (based on user, group, hostname and/or address) are met. So far a useful subset of post-authentication options are supported and more are expected to be added in future releases. + Add support for Diffie-Hellman group exchange key agreement with a final hash of SHA256. + Added a "ForceCommand" directive to sshd_config(5). Similar to the command="..." option accepted in ~/.ssh/authorized_keys, this forces the execution of the specified command regardless of what the user requested. This is very useful in conjunction with the new "Match" option. + Add a "PermitOpen" directive to sshd_config(5). This mirrors the permitopen="..." authorized_keys option, allowing fine-grained control over the port-forwardings that a user is allowed to establish. + Add optional logging of transactions to sftp-server(8). + ssh(1) will now record port numbers for hosts stored in ~/.ssh/known_hosts when a non-standard port has been requested (closes: #50612). + Add an "ExitOnForwardFailure" option to cause ssh(1) to exit (with a non-zero exit code) when requested port forwardings could not be established. + Extend sshd_config(5) "SubSystem" declarations to allow the specification of command-line arguments. + Replacement of all integer overflow susceptible invocations of malloc(3) and realloc(3) with overflow-checking equivalents. + Many manpage fixes and improvements. + Add optional support for OpenSSL hardware accelerators (engines), enabled using the --with-ssl-engine configure option. + Tokens in configuration files may be double-quoted in order to contain spaces (closes: #319639). + Move a debug() call out of a SIGCHLD handler, fixing a hang when the session exits very quickly (closes: #307890). + Fix some incorrect buffer allocation calculations (closes: #410599). + ssh-add doesn't ask for a passphrase if key file permissions are too liberal (closes: #103677). + Likewise, ssh doesn't ask either (closes: #99675). - 4.6/4.6p1 (http://www.openssh.org/txt/release-4.6): + sshd now allows the enabling and disabling of authentication methods on a per user, group, host and network basis via the Match directive in sshd_config. + Fixed an inconsistent check for a terminal when displaying scp progress meter (closes: #257524). + Fix "hang on exit" when background processes are running at the time of exit on a ttyful/login session (closes: #88337). * Update to current GSSAPI patch from http://www.sxw.org.uk/computing/patches/openssh-4.6p1-gsskex-20070312.patch; install ChangeLog.gssapi.
Diffstat (limited to 'canohost.c')
-rw-r--r--canohost.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/canohost.c b/canohost.c
index 6ca60e6b4..2345cc35c 100644
--- a/canohost.c
+++ b/canohost.c
@@ -1,3 +1,4 @@
1/* $OpenBSD: canohost.c,v 1.61 2006/08/03 03:34:41 deraadt Exp $ */
1/* 2/*
2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -12,10 +13,23 @@
12 */ 13 */
13 14
14#include "includes.h" 15#include "includes.h"
15RCSID("$OpenBSD: canohost.c,v 1.48 2005/12/28 22:46:06 stevesk Exp $");
16 16
17#include "packet.h" 17#include <sys/types.h>
18#include <sys/socket.h>
19
20#include <netinet/in.h>
21#include <arpa/inet.h>
22
23#include <ctype.h>
24#include <errno.h>
25#include <netdb.h>
26#include <stdio.h>
27#include <stdlib.h>
28#include <string.h>
29#include <stdarg.h>
30
18#include "xmalloc.h" 31#include "xmalloc.h"
32#include "packet.h"
19#include "log.h" 33#include "log.h"
20#include "canohost.h" 34#include "canohost.h"
21 35
@@ -43,6 +57,9 @@ get_remote_hostname(int sock, int use_dns)
43 cleanup_exit(255); 57 cleanup_exit(255);
44 } 58 }
45 59
60 if (from.ss_family == AF_INET)
61 check_ip_options(sock, ntop);
62
46 ipv64_normalise_mapped(&from, &fromlen); 63 ipv64_normalise_mapped(&from, &fromlen);
47 64
48 if (from.ss_family == AF_INET6) 65 if (from.ss_family == AF_INET6)
@@ -52,9 +69,6 @@ get_remote_hostname(int sock, int use_dns)
52 NULL, 0, NI_NUMERICHOST) != 0) 69 NULL, 0, NI_NUMERICHOST) != 0)
53 fatal("get_remote_hostname: getnameinfo NI_NUMERICHOST failed"); 70 fatal("get_remote_hostname: getnameinfo NI_NUMERICHOST failed");
54 71
55 if (from.ss_family == AF_INET)
56 check_ip_options(sock, ntop);
57
58 if (!use_dns) 72 if (!use_dns)
59 return xstrdup(ntop); 73 return xstrdup(ntop);
60 74
@@ -87,7 +101,7 @@ get_remote_hostname(int sock, int use_dns)
87 */ 101 */
88 for (i = 0; name[i]; i++) 102 for (i = 0; name[i]; i++)
89 if (isupper(name[i])) 103 if (isupper(name[i]))
90 name[i] = tolower(name[i]); 104 name[i] = (char)tolower(name[i]);
91 /* 105 /*
92 * Map it back to an IP address and check that the given 106 * Map it back to an IP address and check that the given
93 * address actually is an address of this host. This is 107 * address actually is an address of this host. This is
@@ -102,7 +116,7 @@ get_remote_hostname(int sock, int use_dns)
102 hints.ai_socktype = SOCK_STREAM; 116 hints.ai_socktype = SOCK_STREAM;
103 if (getaddrinfo(name, NULL, &hints, &aitop) != 0) { 117 if (getaddrinfo(name, NULL, &hints, &aitop) != 0) {
104 logit("reverse mapping checking getaddrinfo for %.700s " 118 logit("reverse mapping checking getaddrinfo for %.700s "
105 "failed - POSSIBLE BREAK-IN ATTEMPT!", name); 119 "[%s] failed - POSSIBLE BREAK-IN ATTEMPT!", name, ntop);
106 return xstrdup(ntop); 120 return xstrdup(ntop);
107 } 121 }
108 /* Look for the address from the list of addresses. */ 122 /* Look for the address from the list of addresses. */