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272 lines
9.1 KiB
272 lines
9.1 KiB
2 years ago
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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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extern ServerOptions options;
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extern u_char *session_id2;
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extern u_int session_id2_len;
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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", runas_pw, command,
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ac, av, &f,
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- SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD)) == 0)
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+ SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
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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", runas_pw, command,
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ac, av, &f,
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- SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD)) == 0)
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+ SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
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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/auth.c.refactor openssh/auth.c
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--- openssh/auth.c.refactor 2019-04-04 13:19:12.235821686 +0200
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+++ openssh/auth.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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*/
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pid_t
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subprocess(const char *tag, struct passwd *pw, const char *command,
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- int ac, char **av, FILE **child, u_int flags)
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+ int ac, char **av, FILE **child, u_int flags, int inetd,
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+ 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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}
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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/auth.h.refactor openssh/auth.h
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--- openssh/auth.h.refactor 2019-04-04 13:19:12.251821839 +0200
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+++ openssh/auth.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_STDOUT_CAPTURE (1<<1) /* Redirect stdout */
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#define SSH_SUBPROCESS_STDERR_DISCARD (1<<2) /* Discard stderr */
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pid_t subprocess(const char *, struct passwd *,
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- const char *, int, char **, FILE **, u_int flags);
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+ const char *, int, char **, FILE **, u_int flags, int, void *);
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int sys_auth_passwd(struct ssh *, const char *);
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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("%s: setting execution context", __func__);
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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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}
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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("%s: security_getenforce() failed", __func__);
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@@ -410,7 +411,7 @@ sshd_selinux_setup_exec_context(char *pw
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debug3("%s: setting execution context", __func__);
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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;
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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;
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/* 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) {
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