SOURCES: openssh-chroot.patch (NEW) - chroot patch in old form is ...
blues
blues at pld-linux.org
Mon May 5 16:41:55 CEST 2008
Author: blues Date: Mon May 5 14:41:55 2008 GMT
Module: SOURCES Tag: HEAD
---- Log message:
- chroot patch in old form is back. Mainline functionality is weak and not
flexible.
---- Files affected:
SOURCES:
openssh-chroot.patch (1.8 -> 1.9) (NEW)
---- Diffs:
================================================================
Index: SOURCES/openssh-chroot.patch
diff -u /dev/null SOURCES/openssh-chroot.patch:1.9
--- /dev/null Mon May 5 16:41:55 2008
+++ SOURCES/openssh-chroot.patch Mon May 5 16:41:50 2008
@@ -0,0 +1,157 @@
+--- openssh-4.4p1/servconf.c.orig 2006-08-18 16:23:15.000000000 +0200
++++ openssh-4.4p1/servconf.c 2006-10-05 10:11:17.065971000 +0200
+@@ -56,7 +56,9 @@
+
+ /* Portable-specific options */
+ options->use_pam = -1;
+-
++
++ options->use_chroot = -1;
++
+ /* Standard Options */
+ options->num_ports = 0;
+ options->ports_from_cmdline = 0;
+@@ -131,6 +133,9 @@
+ if (options->use_pam == -1)
+ options->use_pam = 0;
+
++ if (options->use_chroot == -1)
++ options->use_chroot = 0;
++
+ /* Standard Options */
+ if (options->protocol == SSH_PROTO_UNKNOWN)
+ options->protocol = SSH_PROTO_1|SSH_PROTO_2;
+@@ -270,6 +275,7 @@
+ sBadOption, /* == unknown option */
+ /* Portable-specific options */
+ sUsePAM,
++ sUseChroot,
+ /* Standard Options */
+ sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
+ sPermitRootLogin, sLogFacility, sLogLevel,
+@@ -312,6 +318,11 @@
+ #else
+ { "usepam", sUnsupported, SSHCFG_GLOBAL },
+ #endif
++#ifdef CHROOT
++ { "usechroot", sUseChroot, SSHCFG_GLOBAL },
++#else
++ { "usechroot", sUnsupported, SSHCFG_GLOBAL },
++#endif /* CHROOT */
+ { "pamauthenticationviakbdint", sDeprecated, SSHCFG_GLOBAL },
+ /* Standard Options */
+ { "port", sPort, SSHCFG_GLOBAL },
+@@ -662,6 +673,10 @@
+ intptr = &options->use_pam;
+ goto parse_flag;
+
++ case sUseChroot:
++ intptr = &options->use_chroot;
++ goto parse_flag;
++
+ /* Standard Options */
+ case sBadOption:
+ return -1;
+--- openssh-3.7.1p2/servconf.h 2003-09-02 14:58:22.000000000 +0200
++++ openssh-3.7.1p2.pius/servconf.h 2003-10-07 20:49:08.000000000 +0200
+@@ -109,6 +109,7 @@
+ int max_startups_rate;
+ int max_startups;
+ char *banner; /* SSH-2 banner message */
++ int use_chroot; /* Enable chrooted enviroment support */
+ int use_dns;
+ int client_alive_interval; /*
+ * poke the client this often to
+--- ./session.c.org 2008-05-05 16:22:11.935003283 +0200
++++ ./session.c 2008-05-05 16:32:50.025507650 +0200
+@@ -1345,6 +1345,10 @@ void
+ do_setusercontext(struct passwd *pw)
+ {
+ char *chroot_path, *tmp;
++#ifdef CHROOT
++ char *user_dir;
++ char *new_root;
++#endif /* CHROOT */
+
+ #ifdef WITH_SELINUX
+ /* Cache selinux status for later use */
+@@ -1425,8 +1429,28 @@ do_setusercontext(struct passwd *pw)
+ safely_chroot(chroot_path, pw->pw_uid);
+ free(tmp);
+ free(chroot_path);
++#ifdef CHROOT
++ } else if (options.use_chroot) {
++ user_dir = xstrdup(pw->pw_dir);
++ new_root = user_dir + 1;
++
++ while((new_root = strchr(new_root, '.')) != NULL) {
++ new_root--;
++ if(strncmp(new_root, "/./", 3) == 0) {
++ *new_root = '\0';
++ new_root += 2;
++
++ if(chroot(user_dir) != 0)
++ fatal("Couldn't chroot to user directory %s", user_dir);
++ pw->pw_dir = new_root;
++ break;
++ }
++ new_root += 2;
++ }
++#endif /* CHROOT */
+ }
+
++
+ #ifdef HAVE_LOGIN_CAP
+ if (setusercontext(lc, pw, pw->pw_uid, LOGIN_SETUSER) < 0) {
+ perror("unable to set user context (setuser)");
+--- openssh-3.7.1p2/sshd_config 2003-09-02 14:51:18.000000000 +0200
++++ openssh-3.7.1p2.pius/sshd_config 2003-10-07 20:49:08.000000000 +0200
+@@ -71,6 +71,10 @@
+ # bypass the setting of 'PasswordAuthentication'
+ #UsePAM yes
+
++# Set this to 'yes' to enable support for chrooted user environment.
++# You must create such environment before you can use this feature.
++#UseChroot yes
++
+ #AllowTcpForwarding yes
+ #GatewayPorts no
+ #X11Forwarding no
+--- openssh-4.4p1/sshd_config.0.orig 2006-09-26 13:03:48.000000000 +0200
++++ openssh-4.4p1/sshd_config.0 2006-10-05 10:11:41.615971000 +0200
+@@ -451,6 +451,16 @@
+ To disable TCP keepalive messages, the value should be set to
+ ``no''.
+
++ UseChroot
++ Specifies whether to use chroot-jail environment with ssh/sftp,
++ i.e. restrict users to a particular area in the filesystem. This
++ is done by setting user home directory to, for example,
++ /path/to/chroot/./home/username. sshd looks for a '.' in the
++ users home directory, then calls chroot(2) to whatever directory
++ was before the . and continues with the normal ssh functionality.
++ For this to work properly you have to create special chroot-jail
++ environment in a /path/to/chroot directory.
++
+ UseDNS Specifies whether sshd(8) should look up the remote host name and
+ check that the resolved host name for the remote IP address maps
+ back to the very same IP address. The default is ``yes''.
+--- openssh-3.8p1/sshd_config.5.orig 2004-02-18 04:31:24.000000000 +0100
++++ openssh-3.8p1/sshd_config.5 2004-02-25 21:17:23.000000000 +0100
+@@ -552,6 +552,16 @@
+ The possible values are: DAEMON, USER, AUTH, LOCAL0, LOCAL1, LOCAL2,
+ LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7.
+ The default is AUTH.
++.It Cm UseChroot
++Specifies whether to use chroot-jail environment with ssh/sftp, i.e. restrict
++users to a particular area in the filesystem. This is done by setting user
++home directory to, for example, /path/to/chroot/./home/username.
++.Nm sshd
++looks for a '.' in the users home directory, then calls
++.Xr chroot 2
++to whatever directory was before the . and continues with the normal ssh
++functionality. For this to work properly you have to create special chroot-jail
++environment in a /path/to/chroot directory.
+ .It Cm TCPKeepAlive
+ Specifies whether the system should send TCP keepalive messages to the
+ other side.
================================================================
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