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openssh/openssh-7.6p1-cleanup-selinux.patch
Jakub Jelen def1debf2e openssh-8.0p1-1 + 0.10.3-7 
Resolves rhbz#1701072
2019-04-29 14:12:13 +02:00

272 lines
9.1 KiB
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diff -up openssh/auth2-pubkey.c.refactor openssh/auth2-pubkey.c
--- openssh/auth2-pubkey.c.refactor 2019-04-04 13:19:12.188821236 +0200
+++ openssh/auth2-pubkey.c 2019-04-04 13:19:12.276822078 +0200
@@ -72,6 +72,9 @@
extern ServerOptions options;
extern u_char *session_id2;
extern u_int session_id2_len;
+extern int inetd_flag;
+extern int rexeced_flag;
+extern Authctxt *the_authctxt;
static char *
format_key(const struct sshkey *key)
@@ -511,7 +514,8 @@ match_principals_command(struct ssh *ssh
if ((pid = subprocess("AuthorizedPrincipalsCommand", runas_pw, command,
ac, av, &f,
- SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD)) == 0)
+ SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
+ (inetd_flag && !rexeced_flag), the_authctxt)) == 0)
goto out;
uid_swapped = 1;
@@ -981,7 +985,8 @@ user_key_command_allowed2(struct ssh *ss
if ((pid = subprocess("AuthorizedKeysCommand", runas_pw, command,
ac, av, &f,
- SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD)) == 0)
+ SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
+ (inetd_flag && !rexeced_flag), the_authctxt)) == 0)
goto out;
uid_swapped = 1;
diff -up openssh/auth.c.refactor openssh/auth.c
--- openssh/auth.c.refactor 2019-04-04 13:19:12.235821686 +0200
+++ openssh/auth.c 2019-04-04 13:19:12.276822078 +0200
@@ -756,7 +756,8 @@ auth_get_canonical_hostname(struct ssh *
*/
pid_t
subprocess(const char *tag, struct passwd *pw, const char *command,
- int ac, char **av, FILE **child, u_int flags)
+ int ac, char **av, FILE **child, u_int flags, int inetd,
+ void *the_authctxt)
{
FILE *f = NULL;
struct stat st;
@@ -872,7 +873,7 @@ subprocess(const char *tag, struct passw
}
#ifdef WITH_SELINUX
- if (sshd_selinux_setup_env_variables() < 0) {
+ if (sshd_selinux_setup_env_variables(inetd, the_authctxt) < 0) {
error ("failed to copy environment: %s",
strerror(errno));
_exit(127);
diff -up openssh/auth.h.refactor openssh/auth.h
--- openssh/auth.h.refactor 2019-04-04 13:19:12.251821839 +0200
+++ openssh/auth.h 2019-04-04 13:19:12.276822078 +0200
@@ -235,7 +235,7 @@ struct passwd *fakepw(void);
#define SSH_SUBPROCESS_STDOUT_CAPTURE (1<<1) /* Redirect stdout */
#define SSH_SUBPROCESS_STDERR_DISCARD (1<<2) /* Discard stderr */
pid_t subprocess(const char *, struct passwd *,
- const char *, int, char **, FILE **, u_int flags);
+ const char *, int, char **, FILE **, u_int flags, int, void *);
int sys_auth_passwd(struct ssh *, const char *);
diff -up openssh/openbsd-compat/port-linux.h.refactor openssh/openbsd-compat/port-linux.h
--- openssh/openbsd-compat/port-linux.h.refactor 2019-04-04 13:19:12.256821887 +0200
+++ openssh/openbsd-compat/port-linux.h 2019-04-04 13:19:12.276822078 +0200
@@ -26,8 +26,8 @@ void ssh_selinux_setfscreatecon(const ch
int sshd_selinux_enabled(void);
void sshd_selinux_copy_context(void);
-void sshd_selinux_setup_exec_context(char *);
-int sshd_selinux_setup_env_variables(void);
+void sshd_selinux_setup_exec_context(char *, int, int(char *, const char *), void *, int);
+int sshd_selinux_setup_env_variables(int inetd, void *);
void sshd_selinux_change_privsep_preauth_context(void);
#endif
diff -up openssh/openbsd-compat/port-linux-sshd.c.refactor openssh/openbsd-compat/port-linux-sshd.c
--- openssh/openbsd-compat/port-linux-sshd.c.refactor 2019-04-04 13:19:12.256821887 +0200
+++ openssh/openbsd-compat/port-linux-sshd.c 2019-04-04 13:19:12.276822078 +0200
@@ -49,11 +49,6 @@
#include <unistd.h>
#endif
-extern ServerOptions options;
-extern Authctxt *the_authctxt;
-extern int inetd_flag;
-extern int rexeced_flag;
-
/* Wrapper around is_selinux_enabled() to log its return value once only */
int
sshd_selinux_enabled(void)
@@ -223,7 +218,8 @@ get_user_context(const char *sename, con
}
static void
-ssh_selinux_get_role_level(char **role, const char **level)
+ssh_selinux_get_role_level(char **role, const char **level,
+ Authctxt *the_authctxt)
{
*role = NULL;
*level = NULL;
@@ -241,8 +237,8 @@ ssh_selinux_get_role_level(char **role,
/* Return the default security context for the given username */
static int
-sshd_selinux_getctxbyname(char *pwname,
- security_context_t *default_sc, security_context_t *user_sc)
+sshd_selinux_getctxbyname(char *pwname, security_context_t *default_sc,
+ security_context_t *user_sc, int inetd, Authctxt *the_authctxt)
{
char *sename, *lvl;
char *role;
@@ -250,7 +246,7 @@ sshd_selinux_getctxbyname(char *pwname,
int r = 0;
context_t con = NULL;
- ssh_selinux_get_role_level(&role, &reqlvl);
+ ssh_selinux_get_role_level(&role, &reqlvl, the_authctxt);
#ifdef HAVE_GETSEUSERBYNAME
if ((r=getseuserbyname(pwname, &sename, &lvl)) != 0) {
@@ -272,7 +268,7 @@ sshd_selinux_getctxbyname(char *pwname,
if (r == 0) {
/* If launched from xinetd, we must use current level */
- if (inetd_flag && !rexeced_flag) {
+ if (inetd) {
security_context_t sshdsc=NULL;
if (getcon_raw(&sshdsc) < 0)
@@ -333,7 +329,8 @@ sshd_selinux_getctxbyname(char *pwname,
/* Setup environment variables for pam_selinux */
static int
-sshd_selinux_setup_variables(int(*set_it)(char *, const char *))
+sshd_selinux_setup_variables(int(*set_it)(char *, const char *), int inetd,
+ Authctxt *the_authctxt)
{
const char *reqlvl;
char *role;
@@ -342,11 +339,11 @@ sshd_selinux_setup_variables(int(*set_it
debug3("%s: setting execution context", __func__);
- ssh_selinux_get_role_level(&role, &reqlvl);
+ ssh_selinux_get_role_level(&role, &reqlvl, the_authctxt);
rv = set_it("SELINUX_ROLE_REQUESTED", role ? role : "");
- if (inetd_flag && !rexeced_flag) {
+ if (inetd) {
use_current = "1";
} else {
use_current = "";
@@ -362,9 +359,10 @@ sshd_selinux_setup_variables(int(*set_it
}
static int
-sshd_selinux_setup_pam_variables(void)
+sshd_selinux_setup_pam_variables(int inetd,
+ int(pam_setenv)(char *, const char *), Authctxt *the_authctxt)
{
- return sshd_selinux_setup_variables(do_pam_putenv);
+ return sshd_selinux_setup_variables(pam_setenv, inetd, the_authctxt);
}
static int
@@ -374,25 +372,28 @@ do_setenv(char *name, const char *value)
}
int
-sshd_selinux_setup_env_variables(void)
+sshd_selinux_setup_env_variables(int inetd, void *the_authctxt)
{
- return sshd_selinux_setup_variables(do_setenv);
+ Authctxt *authctxt = (Authctxt *) the_authctxt;
+ return sshd_selinux_setup_variables(do_setenv, inetd, authctxt);
}
/* Set the execution context to the default for the specified user */
void
-sshd_selinux_setup_exec_context(char *pwname)
+sshd_selinux_setup_exec_context(char *pwname, int inetd,
+ int(pam_setenv)(char *, const char *), void *the_authctxt, int use_pam)
{
security_context_t user_ctx = NULL;
int r = 0;
security_context_t default_ctx = NULL;
+ Authctxt *authctxt = (Authctxt *) the_authctxt;
if (!sshd_selinux_enabled())
return;
- if (options.use_pam) {
+ if (use_pam) {
/* do not compute context, just setup environment for pam_selinux */
- if (sshd_selinux_setup_pam_variables()) {
+ if (sshd_selinux_setup_pam_variables(inetd, pam_setenv, authctxt)) {
switch (security_getenforce()) {
case -1:
fatal("%s: security_getenforce() failed", __func__);
@@ -410,7 +411,7 @@ sshd_selinux_setup_exec_context(char *pw
debug3("%s: setting execution context", __func__);
- r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx);
+ r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx, inetd, authctxt);
if (r >= 0) {
r = setexeccon(user_ctx);
if (r < 0) {
diff -up openssh/platform.c.refactor openssh/platform.c
--- openssh/platform.c.refactor 2019-04-04 13:19:12.204821389 +0200
+++ openssh/platform.c 2019-04-04 13:19:12.277822088 +0200
@@ -32,6 +32,9 @@
extern int use_privsep;
extern ServerOptions options;
+extern int inetd_flag;
+extern int rexeced_flag;
+extern Authctxt *the_authctxt;
void
platform_pre_listen(void)
@@ -183,7 +186,9 @@ platform_setusercontext_post_groups(stru
}
#endif /* HAVE_SETPCRED */
#ifdef WITH_SELINUX
- sshd_selinux_setup_exec_context(pw->pw_name);
+ sshd_selinux_setup_exec_context(pw->pw_name,
+ (inetd_flag && !rexeced_flag), do_pam_putenv, the_authctxt,
+ options.use_pam);
#endif
}
diff -up openssh/sshd.c.refactor openssh/sshd.c
--- openssh/sshd.c.refactor 2019-04-04 13:19:12.275822068 +0200
+++ openssh/sshd.c 2019-04-04 13:19:51.270195262 +0200
@@ -158,7 +158,7 @@ int debug_flag = 0;
static int test_flag = 0;
/* Flag indicating that the daemon is being started from inetd. */
-static int inetd_flag = 0;
+int inetd_flag = 0;
/* Flag indicating that sshd should not detach and become a daemon. */
static int no_daemon_flag = 0;
@@ -171,7 +171,7 @@ static char **saved_argv;
static int saved_argc;
/* re-exec */
-static int rexeced_flag = 0;
+int rexeced_flag = 0;
static int rexec_flag = 1;
static int rexec_argc = 0;
static char **rexec_argv;
@@ -2192,7 +2192,9 @@ main(int ac, char **av)
}
#endif
#ifdef WITH_SELINUX
- sshd_selinux_setup_exec_context(authctxt->pw->pw_name);
+ sshd_selinux_setup_exec_context(authctxt->pw->pw_name,
+ (inetd_flag && !rexeced_flag), do_pam_putenv, the_authctxt,
+ options.use_pam);
#endif
#ifdef USE_PAM
if (options.use_pam) {
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