rcolebaugh / rpms / openssh

Forked from rpms/openssh 2 years ago
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9070b3
diff -up openssh/auth2-pubkey.c.refactor openssh/auth2-pubkey.c
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--- openssh/auth2-pubkey.c.refactor	2019-04-04 13:19:12.188821236 +0200
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+++ openssh/auth2-pubkey.c	2019-04-04 13:19:12.276822078 +0200
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@@ -72,6 +72,9 @@
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 /* import */
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 extern ServerOptions options;
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+extern int inetd_flag;
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+extern int rexeced_flag;
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+extern Authctxt *the_authctxt;
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 static char *
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 format_key(const struct sshkey *key)
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@@ -511,7 +514,8 @@ match_principals_command(struct ssh *ssh
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 	if ((pid = subprocess("AuthorizedPrincipalsCommand", command,
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 	    ac, av, &f,
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 	    SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
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-	    runas_pw, temporarily_use_uid, restore_uid)) == 0)
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+	    runas_pw, temporarily_use_uid, restore_uid,
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+	    (inetd_flag && !rexeced_flag), the_authctxt)) == 0)
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 		goto out;
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 	uid_swapped = 1;
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@@ -981,7 +985,8 @@ user_key_command_allowed2(struct ssh *ss
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 	if ((pid = subprocess("AuthorizedKeysCommand", command,
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 	    ac, av, &f,
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	    SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
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-	    runas_pw, temporarily_use_uid, restore_uid)) == 0)
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+	    runas_pw, temporarily_use_uid, restore_uid,
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+	    (inetd_flag && !rexeced_flag), the_authctxt)) == 0)
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 		goto out;
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 	uid_swapped = 1;
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diff -up openssh/misc.c.refactor openssh/misc.c
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--- openssh/misc.c.refactor	2019-04-04 13:19:12.235821686 +0200
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+++ openssh/misc.c	2019-04-04 13:19:12.276822078 +0200
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@@ -756,7 +756,8 @@ auth_get_canonical_hostname(struct ssh *
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 pid_t
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 subprocess(const char *tag, const char *command,
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     int ac, char **av, FILE **child, u_int flags,
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-    struct passwd *pw, privdrop_fn *drop_privs, privrestore_fn *restore_privs)
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+    struct passwd *pw, privdrop_fn *drop_privs,
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+    privrestore_fn *restore_privs, int inetd, void *the_authctxt)
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 {
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 	FILE *f = NULL;
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 	struct stat st;
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@@ -872,7 +873,7 @@ subprocess(const char *tag, struct passw
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 			_exit(1);
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 		}
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 #ifdef WITH_SELINUX
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-		if (sshd_selinux_setup_env_variables() < 0) {
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+		if (sshd_selinux_setup_env_variables(inetd, the_authctxt) < 0) {
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 			error ("failed to copy environment:  %s",
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 			    strerror(errno));
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 			_exit(127);
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diff -up openssh/misc.h.refactor openssh/misc.h
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--- openssh/misc.h.refactor	2019-04-04 13:19:12.251821839 +0200
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+++ openssh/misc.h	2019-04-04 13:19:12.276822078 +0200
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@@ -235,7 +235,7 @@ struct passwd *fakepw(void);
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 #define	SSH_SUBPROCESS_UNSAFE_PATH	(1<<3)	/* Don't check for safe cmd */
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 #define	SSH_SUBPROCESS_PRESERVE_ENV	(1<<4)	/* Keep parent environment */
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 pid_t subprocess(const char *, const char *, int, char **, FILE **, u_int,
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-    struct passwd *, privdrop_fn *, privrestore_fn *);
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+    struct passwd *, privdrop_fn *, privrestore_fn *, int, void *);
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 typedef struct arglist arglist;
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 struct arglist {
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diff -up openssh/openbsd-compat/port-linux.h.refactor openssh/openbsd-compat/port-linux.h
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--- openssh/openbsd-compat/port-linux.h.refactor	2019-04-04 13:19:12.256821887 +0200
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+++ openssh/openbsd-compat/port-linux.h	2019-04-04 13:19:12.276822078 +0200
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@@ -26,8 +26,8 @@ void ssh_selinux_setfscreatecon(const ch
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 int sshd_selinux_enabled(void);
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 void sshd_selinux_copy_context(void);
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-void sshd_selinux_setup_exec_context(char *);
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-int sshd_selinux_setup_env_variables(void);
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+void sshd_selinux_setup_exec_context(char *, int, int(char *, const char *), void *, int);
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+int sshd_selinux_setup_env_variables(int inetd, void *);
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 void sshd_selinux_change_privsep_preauth_context(void);
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 #endif
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diff -up openssh/openbsd-compat/port-linux-sshd.c.refactor openssh/openbsd-compat/port-linux-sshd.c
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--- openssh/openbsd-compat/port-linux-sshd.c.refactor	2019-04-04 13:19:12.256821887 +0200
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+++ openssh/openbsd-compat/port-linux-sshd.c	2019-04-04 13:19:12.276822078 +0200
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@@ -49,11 +49,6 @@
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 #include <unistd.h>
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 #endif
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-extern ServerOptions options;
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-extern Authctxt *the_authctxt;
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-extern int inetd_flag;
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-extern int rexeced_flag;
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-
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 /* Wrapper around is_selinux_enabled() to log its return value once only */
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 int
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 sshd_selinux_enabled(void)
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@@ -223,7 +218,8 @@ get_user_context(const char *sename, con
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 }
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 static void
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-ssh_selinux_get_role_level(char **role, const char **level)
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+ssh_selinux_get_role_level(char **role, const char **level,
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+    Authctxt *the_authctxt)
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 {
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 	*role = NULL;
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 	*level = NULL;
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@@ -241,8 +237,8 @@ ssh_selinux_get_role_level(char **role,
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 /* Return the default security context for the given username */
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 static int
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-sshd_selinux_getctxbyname(char *pwname,
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-	security_context_t *default_sc, security_context_t *user_sc)
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+sshd_selinux_getctxbyname(char *pwname, security_context_t *default_sc,
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+    security_context_t *user_sc, int inetd, Authctxt *the_authctxt)
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 {
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 	char *sename, *lvl;
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 	char *role;
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@@ -250,7 +246,7 @@ sshd_selinux_getctxbyname(char *pwname,
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 	int r = 0;
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 	context_t con = NULL;
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-	ssh_selinux_get_role_level(&role, &reqlvl);
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+	ssh_selinux_get_role_level(&role, &reqlvl, the_authctxt);
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 #ifdef HAVE_GETSEUSERBYNAME
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 	if ((r=getseuserbyname(pwname, &sename, &lvl)) != 0) {
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@@ -272,7 +268,7 @@ sshd_selinux_getctxbyname(char *pwname,
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 	if (r == 0) {
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 		/* If launched from xinetd, we must use current level */
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-		if (inetd_flag && !rexeced_flag) {
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+		if (inetd) {
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 			security_context_t sshdsc=NULL;
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 			if (getcon_raw(&sshdsc) < 0)
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@@ -333,7 +329,8 @@ sshd_selinux_getctxbyname(char *pwname,
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 /* Setup environment variables for pam_selinux */
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 static int
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-sshd_selinux_setup_variables(int(*set_it)(char *, const char *))
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+sshd_selinux_setup_variables(int(*set_it)(char *, const char *), int inetd,
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+    Authctxt *the_authctxt)
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 {
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 	const char *reqlvl;
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 	char *role;
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@@ -342,11 +339,11 @@ sshd_selinux_setup_variables(int(*set_it
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 	debug3_f("setting execution context");
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-	ssh_selinux_get_role_level(&role, &reqlvl);
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+	ssh_selinux_get_role_level(&role, &reqlvl, the_authctxt);
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 	rv = set_it("SELINUX_ROLE_REQUESTED", role ? role : "");
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-	if (inetd_flag && !rexeced_flag) {
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+	if (inetd) {
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 		use_current = "1";
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 	} else {
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 		use_current = "";
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@@ -362,9 +359,10 @@ sshd_selinux_setup_variables(int(*set_it
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 }
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 static int
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-sshd_selinux_setup_pam_variables(void)
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+sshd_selinux_setup_pam_variables(int inetd,
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+    int(pam_setenv)(char *, const char *), Authctxt *the_authctxt)
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 {
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-	return sshd_selinux_setup_variables(do_pam_putenv);
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+	return sshd_selinux_setup_variables(pam_setenv, inetd, the_authctxt);
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 }
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 static int
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@@ -374,25 +372,28 @@ do_setenv(char *name, const char *value)
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 }
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 int
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-sshd_selinux_setup_env_variables(void)
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+sshd_selinux_setup_env_variables(int inetd, void *the_authctxt)
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 {
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-	return sshd_selinux_setup_variables(do_setenv);
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+	Authctxt *authctxt = (Authctxt *) the_authctxt;
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+	return sshd_selinux_setup_variables(do_setenv, inetd, authctxt);
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 }
9070b3
 
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 /* Set the execution context to the default for the specified user */
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 void
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-sshd_selinux_setup_exec_context(char *pwname)
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+sshd_selinux_setup_exec_context(char *pwname, int inetd,
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+    int(pam_setenv)(char *, const char *), void *the_authctxt, int use_pam)
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 {
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 	security_context_t user_ctx = NULL;
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 	int r = 0;
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 	security_context_t default_ctx = NULL;
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+	Authctxt *authctxt = (Authctxt *) the_authctxt;
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 	if (!sshd_selinux_enabled())
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 		return;
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-	if (options.use_pam) {
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+	if (use_pam) {
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 		/* do not compute context, just setup environment for pam_selinux */
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-		if (sshd_selinux_setup_pam_variables()) {
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+		if (sshd_selinux_setup_pam_variables(inetd, pam_setenv, authctxt)) {
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 			switch (security_getenforce()) {
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 			case -1:
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 				fatal_f("security_getenforce() failed");
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@@ -410,7 +411,7 @@ sshd_selinux_setup_exec_context(char *pw
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 	debug3_f("setting execution context");
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-	r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx);
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+	r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx, inetd, authctxt);
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 	if (r >= 0) {
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 		r = setexeccon(user_ctx);
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 		if (r < 0) {
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diff -up openssh/platform.c.refactor openssh/platform.c
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--- openssh/platform.c.refactor	2019-04-04 13:19:12.204821389 +0200
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+++ openssh/platform.c	2019-04-04 13:19:12.277822088 +0200
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@@ -32,6 +32,9 @@
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 extern int use_privsep;
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 extern ServerOptions options;
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+extern int inetd_flag;
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+extern int rexeced_flag;
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+extern Authctxt *the_authctxt;
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 void
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 platform_pre_listen(void)
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@@ -183,7 +186,9 @@ platform_setusercontext_post_groups(stru
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 	}
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 #endif /* HAVE_SETPCRED */
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 #ifdef WITH_SELINUX
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-	sshd_selinux_setup_exec_context(pw->pw_name);
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+	sshd_selinux_setup_exec_context(pw->pw_name,
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+	    (inetd_flag && !rexeced_flag), do_pam_putenv, the_authctxt,
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+	    options.use_pam);
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 #endif
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 }
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diff -up openssh/sshd.c.refactor openssh/sshd.c
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--- openssh/sshd.c.refactor	2019-04-04 13:19:12.275822068 +0200
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+++ openssh/sshd.c	2019-04-04 13:19:51.270195262 +0200
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@@ -158,7 +158,7 @@ int debug_flag = 0;
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 static int test_flag = 0;
9070b3
 
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 /* Flag indicating that the daemon is being started from inetd. */
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-static int inetd_flag = 0;
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+int inetd_flag = 0;
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 /* Flag indicating that sshd should not detach and become a daemon. */
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 static int no_daemon_flag = 0;
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@@ -171,7 +171,7 @@ static char **saved_argv;
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 static int saved_argc;
9070b3
 
9070b3
 /* re-exec */
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-static int rexeced_flag = 0;
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+int rexeced_flag = 0;
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 static int rexec_flag = 1;
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 static int rexec_argc = 0;
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 static char **rexec_argv;
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@@ -2192,7 +2192,9 @@ main(int ac, char **av)
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 	}
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 #endif
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 #ifdef WITH_SELINUX
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-	sshd_selinux_setup_exec_context(authctxt->pw->pw_name);
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+	sshd_selinux_setup_exec_context(authctxt->pw->pw_name,
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+	    (inetd_flag && !rexeced_flag), do_pam_putenv, the_authctxt,
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+	    options.use_pam);
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 #endif
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 #ifdef USE_PAM
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 	if (options.use_pam) {
9070b3
diff -up openssh/sshconnect.c.refactor openssh/sshconnect.c
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--- openssh/sshconnect.c.refactor	2021-02-24 00:12:03.065325046 +0100
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+++ openssh/sshconnect.c	2021-02-24 00:12:12.126449544 +0100
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@@ -892,7 +892,7 @@ load_hostkeys_command(struct hostkeys *h
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 	if ((pid = subprocess(tag, command, ac, av, &f,
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 	    SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_UNSAFE_PATH|
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-	    SSH_SUBPROCESS_PRESERVE_ENV, NULL, NULL, NULL)) == 0)
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+	    SSH_SUBPROCESS_PRESERVE_ENV, NULL, NULL, NULL, 0, NULL)) == 0)
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 		goto out;
9070b3
 
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 	load_hostkeys_file(hostkeys, hostfile_hostname, tag, f, 1);