PolicyKit: Branch 'master'

David Zeuthen david at kemper.freedesktop.org
Wed Dec 5 19:48:02 PST 2007


 src/kit/kit-string.c                             |    4 
 src/polkit-grant/polkit-authorization-db-write.c |  293 +++++++++++++++--------
 src/polkit-grant/polkit-explicit-grant-helper.c  |   35 +-
 src/polkit-grant/polkit-grant-helper.c           |   28 +-
 src/polkit/polkit-authorization-constraint.c     |  200 +++++----------
 src/polkit/polkit-authorization-constraint.h     |   26 --
 src/polkit/polkit-authorization-db.c             |   42 ++-
 src/polkit/polkit-authorization-db.h             |    4 
 src/polkit/polkit-authorization.c                |  137 ++++++----
 src/polkit/polkit-authorization.h                |   23 +
 src/polkit/polkit-private.h                      |    2 
 tools/polkit-auth.c                              |   66 ++---
 12 files changed, 493 insertions(+), 367 deletions(-)

New commits:
commit a386f3c61f84b726ca47808599c110c057eba04c
Author: David Zeuthen <davidz at redhat.com>
Date:   Wed Dec 5 22:44:50 2007 -0500

    refactor constraints API so there is one entry per constraint in the auth file
    
    This makes things a lot more future proof and, perhaps, also easier to
    understand.

diff --git a/src/kit/kit-string.c b/src/kit/kit-string.c
index a56d257..579e568 100644
--- a/src/kit/kit-string.c
+++ b/src/kit/kit-string.c
@@ -413,7 +413,7 @@ _to_hex (unsigned int nibble)
  * this limit then the return value is the number of characters (not
  * including the trailing zero) which would have been written to the
  * final string if enough space had been available. Thus, a return
- * value of size or more means that the output was truncated.
+ * value of @buf_size or more means that the output was truncated.
  */
 size_t
 kit_string_percent_encode (char *buf, size_t buf_size, const char *s)
@@ -625,7 +625,7 @@ out:
  * this limit then the return value is the number of characters (not
  * including the trailing zero) which would have been written to the
  * final string if enough space had been available. Thus, a return
- * value of size or more means that the output was truncated.
+ * value of @buf_size or more means that the output was truncated.
  *
  * If an uneven number of strings are given, this function will return
  * zero and errno will be set to EINVAL.
diff --git a/src/polkit-grant/polkit-authorization-db-write.c b/src/polkit-grant/polkit-authorization-db-write.c
index dd904a2..a6e8099 100644
--- a/src/polkit-grant/polkit-authorization-db-write.c
+++ b/src/polkit-grant/polkit-authorization-db-write.c
@@ -84,7 +84,7 @@ out:
 }
 
 polkit_bool_t 
-_polkit_authorization_db_auth_file_add (const char *root, polkit_bool_t transient, uid_t uid, char *str_to_add)
+_polkit_authorization_db_auth_file_add (polkit_bool_t transient, uid_t uid, char *str_to_add)
 {
         int fd;
         char *contents;
@@ -95,8 +95,14 @@ _polkit_authorization_db_auth_file_add (const char *root, polkit_bool_t transien
         polkit_bool_t ret;
         struct stat statbuf;
         struct passwd *pw;
+        const char *root;
         char *newline = "\n";
 
+        if (transient)
+                root = PACKAGE_LOCALSTATE_DIR "/run/PolicyKit";
+        else
+                root = PACKAGE_LOCALSTATE_DIR "/lib/PolicyKit";
+
         ret = FALSE;
         path = NULL;
         path_tmp = NULL;
@@ -213,6 +219,83 @@ out:
         return ret;
 }
 
+/* returns -1 on error */
+static int
+_write_constraints (char *buf, size_t buf_size, PolKitAuthorizationConstraint **constraints)
+{
+        unsigned int n;
+        unsigned int m;
+
+        kit_return_val_if_fail (constraints != NULL, 0);
+
+        for (n = 0, m = 0; constraints[n] != NULL; n++) {
+                PolKitAuthorizationConstraint *c;
+                const char *key;
+                char value[1024];
+
+                c = constraints[n];
+
+                key = "constraint";
+
+                if (polkit_authorization_constraint_to_string (c, value, sizeof (value)) >= sizeof (value)) {
+                        kit_warning ("Constraint %d is too large!", n);
+                        m = -1;
+                        goto out;
+                }
+
+                if (m < buf_size)
+                        buf[m] = ':';
+                m++;
+
+                m += kit_string_percent_encode (buf + m, buf_size - m > 0 ? buf_size - m : 0, key);
+
+                if (m < buf_size)
+                        buf[m] = '=';
+                m++;
+
+                m += kit_string_percent_encode (buf + m, buf_size - m > 0 ? buf_size - m : 0, value);
+        }
+
+        if (m < buf_size)
+                buf[m] = '\0';
+
+out:
+        return m;
+}
+
+static polkit_bool_t
+_add_caller_constraints (char *buf, size_t buf_size, PolKitCaller *caller)
+{
+        PolKitAuthorizationConstraint *constraints[64];
+        size_t num_constraints;
+        polkit_bool_t ret;
+        int num_written;
+        unsigned int n;
+
+        ret = FALSE;
+
+        num_constraints = polkit_authorization_constraint_get_from_caller (caller, constraints, 64);
+        if (num_constraints >= 64) {
+                goto out;
+        }
+
+        num_written = _write_constraints (buf, buf_size, constraints);
+        if (num_written == -1) {
+                goto out;
+        }
+        
+        if ((size_t) num_written >= buf_size) {
+                goto out;
+        }
+        
+        ret = TRUE;
+
+out:
+        for (n = 0; n < num_constraints && n < 64 && constraints[n] != NULL; n++) {
+                polkit_authorization_constraint_unref (constraints[n]);
+        }
+        return ret;
+}
 
 /**
  * polkit_authorization_db_add_entry_process_one_shot:
@@ -251,8 +334,6 @@ polkit_authorization_db_add_entry_process_one_shot (PolKitAuthorizationDB *authd
         polkit_bool_t ret;
         polkit_uint64_t pid_start_time;
         struct timeval now;
-        PolKitAuthorizationConstraint *constraint;
-        char cbuf[256];
 
         g_return_val_if_fail (authdb != NULL, FALSE);
         g_return_val_if_fail (action != NULL, FALSE);
@@ -276,12 +357,6 @@ polkit_authorization_db_add_entry_process_one_shot (PolKitAuthorizationDB *authd
                 return FALSE;
         }
 
-        constraint = polkit_authorization_constraint_get_from_caller (caller);
-        if (polkit_authorization_constraint_to_string (constraint, cbuf, sizeof (cbuf)) >= sizeof (cbuf)) {
-                g_warning ("buffer for auth constraint is too small");
-                return FALSE;
-        }
-
         char pid_buf[32];
         char pid_st_buf[32];
         char now_buf[32];
@@ -292,21 +367,25 @@ polkit_authorization_db_add_entry_process_one_shot (PolKitAuthorizationDB *authd
         snprintf (now_buf, sizeof (now_buf), "%Lu", (polkit_uint64_t) now.tv_sec);
         snprintf (uid_buf, sizeof (uid_buf), "%d", user_authenticated_as);
 
-        if (kit_string_entry_create (auth_buf, sizeof (auth_buf),
-                                     "scope",          "process-one-shot",
-                                     "pid",            pid_buf,
-                                     "pid-start-time", pid_st_buf,
-                                     "action-id",      action_id,
-                                     "when",           now_buf,
-                                     "auth-as",        uid_buf,
-                                     "constraint",     cbuf,
-                                     NULL) >= sizeof (auth_buf)) {
+        size_t len;
+        if ((len = kit_string_entry_create (auth_buf, sizeof (auth_buf),
+                                            "scope",          "process-one-shot",
+                                            "pid",            pid_buf,
+                                            "pid-start-time", pid_st_buf,
+                                            "action-id",      action_id,
+                                            "when",           now_buf,
+                                            "auth-as",        uid_buf,
+                                            NULL)) >= sizeof (auth_buf)) {
+                g_warning ("authbuf for is too small");
+                return FALSE;
+        }
+
+        if (!_add_caller_constraints (auth_buf + len, sizeof (auth_buf) - len, caller)) {
                 g_warning ("authbuf for is too small");
                 return FALSE;
         }
 
-        ret = _polkit_authorization_db_auth_file_add (PACKAGE_LOCALSTATE_DIR "/run/PolicyKit", 
-                                                      TRUE, 
+        ret = _polkit_authorization_db_auth_file_add (TRUE, 
                                                       caller_uid, 
                                                       auth_buf);
         return ret;
@@ -349,8 +428,6 @@ polkit_authorization_db_add_entry_process          (PolKitAuthorizationDB *authd
         polkit_bool_t ret;
         polkit_uint64_t pid_start_time;
         struct timeval now;
-        PolKitAuthorizationConstraint *constraint;
-        char cbuf[256];
 
         g_return_val_if_fail (authdb != NULL, FALSE);
         g_return_val_if_fail (action != NULL, FALSE);
@@ -374,12 +451,6 @@ polkit_authorization_db_add_entry_process          (PolKitAuthorizationDB *authd
                 return FALSE;
         }
 
-        constraint = polkit_authorization_constraint_get_from_caller (caller);
-        if (polkit_authorization_constraint_to_string (constraint, cbuf, sizeof (cbuf)) >= sizeof (cbuf)) {
-                g_warning ("buffer for auth constraint is too small");
-                return FALSE;
-        }
-
         char pid_buf[32];
         char pid_st_buf[32];
         char now_buf[32];
@@ -390,21 +461,25 @@ polkit_authorization_db_add_entry_process          (PolKitAuthorizationDB *authd
         snprintf (now_buf, sizeof (now_buf), "%Lu", (polkit_uint64_t) now.tv_sec);
         snprintf (uid_buf, sizeof (uid_buf), "%d", user_authenticated_as);
 
-        if (kit_string_entry_create (auth_buf, sizeof (auth_buf),
-                                     "scope",          "process",
-                                     "pid",            pid_buf,
-                                     "pid-start-time", pid_st_buf,
-                                     "action-id",      action_id,
-                                     "when",           now_buf,
-                                     "auth-as",        uid_buf,
-                                     "constraint",     cbuf,
-                                     NULL) >= sizeof (auth_buf)) {
+        size_t len;
+        if ((len = kit_string_entry_create (auth_buf, sizeof (auth_buf),
+                                            "scope",          "process",
+                                            "pid",            pid_buf,
+                                            "pid-start-time", pid_st_buf,
+                                            "action-id",      action_id,
+                                            "when",           now_buf,
+                                            "auth-as",        uid_buf,
+                                            NULL)) >= sizeof (auth_buf)) {
+                g_warning ("authbuf for is too small");
+                return FALSE;
+        }
+
+        if (!_add_caller_constraints (auth_buf + len, sizeof (auth_buf) - len, caller)) {
                 g_warning ("authbuf for is too small");
                 return FALSE;
         }
 
-        ret = _polkit_authorization_db_auth_file_add (PACKAGE_LOCALSTATE_DIR "/run/PolicyKit", 
-                                                      TRUE, 
+        ret = _polkit_authorization_db_auth_file_add (TRUE, 
                                                       caller_uid, 
                                                       auth_buf);
         return ret;
@@ -448,8 +523,6 @@ polkit_authorization_db_add_entry_session          (PolKitAuthorizationDB *authd
         char *session_objpath;
         polkit_bool_t ret;
         struct timeval now;
-        PolKitAuthorizationConstraint *constraint;
-        char cbuf[256];
 
         g_return_val_if_fail (authdb != NULL, FALSE);
         g_return_val_if_fail (action != NULL, FALSE);
@@ -467,12 +540,6 @@ polkit_authorization_db_add_entry_session          (PolKitAuthorizationDB *authd
         if (!polkit_session_get_uid (session, &session_uid))
                 return FALSE;
 
-        constraint = polkit_authorization_constraint_get_from_caller (caller);
-        if (polkit_authorization_constraint_to_string (constraint, cbuf, sizeof (cbuf)) >= sizeof (cbuf)) {
-                g_warning ("buffer for auth constraint is too small");
-                return FALSE;
-        }
-
         if (gettimeofday (&now, NULL) != 0) {
                 g_warning ("Error calling gettimeofday: %m");
                 return FALSE;
@@ -484,20 +551,24 @@ polkit_authorization_db_add_entry_session          (PolKitAuthorizationDB *authd
         snprintf (now_buf, sizeof (now_buf), "%Lu", (polkit_uint64_t) now.tv_sec);
         snprintf (uid_buf, sizeof (uid_buf), "%d", user_authenticated_as);
 
-        if (kit_string_entry_create (auth_buf, sizeof (auth_buf),
-                                     "scope",          "session",
-                                     "session-id",     session_objpath,
-                                     "action-id",      action_id,
-                                     "when",           now_buf,
-                                     "auth-as",        uid_buf,
-                                     "constraint",     cbuf,
-                                     NULL) >= sizeof (auth_buf)) {
+        size_t len;
+        if ((len = kit_string_entry_create (auth_buf, sizeof (auth_buf),
+                                            "scope",          "session",
+                                            "session-id",     session_objpath,
+                                            "action-id",      action_id,
+                                            "when",           now_buf,
+                                            "auth-as",        uid_buf,
+                                            NULL)) >= sizeof (auth_buf)) {
                 g_warning ("authbuf for is too small");
                 return FALSE;
         }
 
-        ret = _polkit_authorization_db_auth_file_add (PACKAGE_LOCALSTATE_DIR "/run/PolicyKit", 
-                                                      TRUE, 
+        if (!_add_caller_constraints (auth_buf + len, sizeof (auth_buf) - len, caller)) {
+                g_warning ("authbuf for is too small");
+                return FALSE;
+        }
+
+        ret = _polkit_authorization_db_auth_file_add (TRUE, 
                                                       session_uid, 
                                                       auth_buf);
         return ret;
@@ -538,8 +609,6 @@ polkit_authorization_db_add_entry_always           (PolKitAuthorizationDB *authd
         char *action_id;
         polkit_bool_t ret;
         struct timeval now;
-        PolKitAuthorizationConstraint *constraint;
-        char cbuf[256];
 
         g_return_val_if_fail (authdb != NULL, FALSE);
         g_return_val_if_fail (action != NULL, FALSE);
@@ -556,31 +625,28 @@ polkit_authorization_db_add_entry_always           (PolKitAuthorizationDB *authd
                 return FALSE;
         }
 
-        constraint = polkit_authorization_constraint_get_from_caller (caller);
-        if (polkit_authorization_constraint_to_string (constraint, cbuf, sizeof (cbuf)) >= sizeof (cbuf)) {
-                g_warning ("buffer for auth constraint is too small");
-                return FALSE;
-        }
-
         char now_buf[32];
         char uid_buf[32];
         char auth_buf[1024];
         snprintf (now_buf, sizeof (now_buf), "%Lu", (polkit_uint64_t) now.tv_sec);
         snprintf (uid_buf, sizeof (uid_buf), "%d", user_authenticated_as);
 
-        if (kit_string_entry_create (auth_buf, sizeof (auth_buf),
-                                     "scope",          "always",
-                                     "action-id",      action_id,
-                                     "when",           now_buf,
-                                     "auth-as",        uid_buf,
-                                     "constraint",     cbuf,
-                                     NULL) >= sizeof (auth_buf)) {
+        size_t len;
+        if ((len = kit_string_entry_create (auth_buf, sizeof (auth_buf),
+                                            "scope",          "always",
+                                            "action-id",      action_id,
+                                            "when",           now_buf,
+                                            "auth-as",        uid_buf,
+                                            NULL)) >= sizeof (auth_buf)) {
+                g_warning ("authbuf for is too small");
+                return FALSE;
+        }
+        if (!_add_caller_constraints (auth_buf + len, sizeof (auth_buf) - len, caller)) {
                 g_warning ("authbuf for is too small");
                 return FALSE;
         }
 
-        ret = _polkit_authorization_db_auth_file_add (PACKAGE_LOCALSTATE_DIR "/lib/PolicyKit", 
-                                                      FALSE, 
+        ret = _polkit_authorization_db_auth_file_add (FALSE, 
                                                       uid, 
                                                       auth_buf);
         return ret;
@@ -589,12 +655,34 @@ polkit_authorization_db_add_entry_always           (PolKitAuthorizationDB *authd
 
 typedef struct {
         char *action_id;
-        PolKitAuthorizationConstraint  *constraint;
+        unsigned int _check_constraint_num;
+        PolKitAuthorizationConstraint  **constraints;
 
         polkit_bool_t is_authorized;
         polkit_bool_t is_negative_authorized;
 } CheckDataGrant;
 
+static polkit_bool_t
+_check_constraints_for_grant (PolKitAuthorization *auth, PolKitAuthorizationConstraint *authc, void *user_data)
+{
+        CheckDataGrant *cd = (CheckDataGrant *) user_data;
+        polkit_bool_t ret;
+
+        ret = FALSE;
+
+        if (cd->constraints [cd->_check_constraint_num] == NULL)
+                goto no_match;
+
+        if (!polkit_authorization_constraint_equal (authc, cd->constraints[cd->_check_constraint_num]))
+                goto no_match;
+
+        cd->_check_constraint_num += 1;
+        return FALSE;
+
+no_match:
+        return TRUE;
+}
+
 static polkit_bool_t 
 _check_auth_for_grant (PolKitAuthorizationDB *authdb, PolKitAuthorization *auth, void *user_data)
 {
@@ -611,7 +699,16 @@ _check_auth_for_grant (PolKitAuthorizationDB *authdb, PolKitAuthorization *auth,
         if (!polkit_authorization_was_granted_explicitly (auth, &pimp, &is_negative))
                 goto no_match;
 
-        if (!polkit_authorization_constraint_equal (polkit_authorization_get_constraint (auth), cd->constraint))
+        /* This checks that the number of authorizations are the
+         * same.. as well as that the authorizations are similar one
+         * by one..
+         *
+         * TODO: FIXME: this relies on the ordering, e.g. we don't
+         * catch local+active if there is an active+local one already.
+         */
+        cd->_check_constraint_num = 0;
+        if (polkit_authorization_constraints_foreach (auth, _check_constraints_for_grant, cd) ||
+            cd->constraints [cd->_check_constraint_num] != NULL)
                 goto no_match;
 
         if (is_negative) {
@@ -633,7 +730,7 @@ static polkit_bool_t
 _grant_internal (PolKitAuthorizationDB          *authdb,
                  PolKitAction                   *action,
                  uid_t                           uid,
-                 PolKitAuthorizationConstraint  *constraint,
+                 PolKitAuthorizationConstraint **constraints,
                  PolKitError                   **error,
                  polkit_bool_t                   is_negative)
 {
@@ -641,7 +738,7 @@ _grant_internal (PolKitAuthorizationDB          *authdb,
         char *helper_argv[6] = {PACKAGE_LIBEXEC_DIR "/polkit-explicit-grant-helper", NULL, NULL, NULL, NULL, NULL};
         gboolean ret;
         gint exit_status;
-        char cbuf[256];
+        char cbuf[1024];
         CheckDataGrant cd;
         polkit_bool_t did_exist;
 
@@ -649,7 +746,6 @@ _grant_internal (PolKitAuthorizationDB          *authdb,
 
         g_return_val_if_fail (authdb != NULL, FALSE);
         g_return_val_if_fail (action != NULL, FALSE);
-        g_return_val_if_fail (constraint != NULL, FALSE);
 
         if (!polkit_action_get_action_id (action, &(cd.action_id))) {
                 polkit_error_set_error (error, 
@@ -658,16 +754,29 @@ _grant_internal (PolKitAuthorizationDB          *authdb,
                 goto out;
         }
 
-        if (polkit_authorization_constraint_to_string (constraint, cbuf, sizeof (cbuf)) >= sizeof (cbuf)) {
-                g_warning ("buffer for auth constraint is too small");
-                polkit_error_set_error (error, 
-                                        POLKIT_ERROR_GENERAL_ERROR, 
-                                        "buffer for auth constraint is too small");
-                goto out;
+        if (constraints == NULL) {
+                cbuf[0] = '\0';
+        } else {
+                int num_written;
+                num_written = _write_constraints (cbuf, sizeof (cbuf), constraints);
+                if (num_written == -1) {
+                        polkit_error_set_error (error, 
+                                                POLKIT_ERROR_GENERAL_ERROR, 
+                                                "one of the given constraints did not fit");
+                        goto out;
+                }
+
+                if ((size_t) num_written >= sizeof (cbuf)) {
+                        g_warning ("buffer for auth constraint is too small");
+                        polkit_error_set_error (error, 
+                                                POLKIT_ERROR_GENERAL_ERROR, 
+                                                "buffer for auth constraint is too small");
+                        goto out;
+                }
         }
 
         /* check if we have the auth already */
-        cd.constraint = constraint;
+        cd.constraints = constraints;
         cd.is_authorized = FALSE;
         cd.is_negative_authorized = FALSE;
         polkit_authorization_db_foreach_for_uid (authdb,
@@ -753,7 +862,7 @@ out:
  * @authdb: authorization database
  * @action: action
  * @uid: uid to grant to
- * @constraint: what constraint to put on the authorization
+ * @constraints: Either %NULL or a %NULL terminated list of constraint to put on the authorization
  * @error: return location for error
  *
  * Grants an authorization to a user for a specific action. This
@@ -770,10 +879,10 @@ polkit_bool_t
 polkit_authorization_db_grant_to_uid (PolKitAuthorizationDB          *authdb,
                                       PolKitAction                   *action,
                                       uid_t                           uid,
-                                      PolKitAuthorizationConstraint  *constraint,
+                                      PolKitAuthorizationConstraint **constraints,
                                       PolKitError                   **error)
 {
-        return _grant_internal (authdb, action, uid, constraint, error, FALSE);
+        return _grant_internal (authdb, action, uid, constraints, error, FALSE);
 }
 
 /**
@@ -781,7 +890,7 @@ polkit_authorization_db_grant_to_uid (PolKitAuthorizationDB          *authdb,
  * @authdb: authorization database
  * @action: action
  * @uid: uid to grant to
- * @constraint: what constraint to put on the authorization
+ * @constraints: Either %NULL or a %NULL terminated list of constraint to put on the authorization
  * @error: return location for error
  *
  * Grants a negative authorization to a user for a specific action. If
@@ -803,8 +912,8 @@ polkit_bool_t
 polkit_authorization_db_grant_negative_to_uid           (PolKitAuthorizationDB          *authdb,
                                                          PolKitAction                   *action,
                                                          uid_t                           uid,
-                                                         PolKitAuthorizationConstraint  *constraint,
+                                                         PolKitAuthorizationConstraint **constraints,
                                                          PolKitError                   **error)
 {
-        return _grant_internal (authdb, action, uid, constraint, error, TRUE);
+        return _grant_internal (authdb, action, uid, constraints, error, TRUE);
 }
diff --git a/src/polkit-grant/polkit-explicit-grant-helper.c b/src/polkit-grant/polkit-explicit-grant-helper.c
index 0e9d8ae..75b8d2e 100644
--- a/src/polkit-grant/polkit-explicit-grant-helper.c
+++ b/src/polkit-grant/polkit-explicit-grant-helper.c
@@ -115,16 +115,11 @@ main (int argc, char *argv[])
         }
 
         char *authc_str;
-        PolKitAuthorizationConstraint *authc;
+        size_t authc_str_len;
 
-        /* second is the auth constraint */
+        /* second is the textual form of the auth constraint */
         authc_str = argv[2];
-        authc = polkit_authorization_constraint_from_string (authc_str);
-        if (authc == NULL) {
-                syslog (LOG_NOTICE, "auth constraint is malformed [uid=%d]", getuid ());
-                fprintf (stderr, "polkit-explicit-grant-helper: auth constraint is malformed. This incident has been logged.\n");
-                goto out;
-        }
+        authc_str_len = strlen (authc_str);
 
 #define TARGET_UID 0
         int target;
@@ -190,19 +185,25 @@ main (int argc, char *argv[])
         snprintf (now_buf, sizeof (now_buf), "%Lu", (polkit_uint64_t) now.tv_sec);
         snprintf (uid_buf, sizeof (uid_buf), "%d", invoking_uid);
 
-        if (kit_string_entry_create (auth_buf, sizeof (auth_buf),
-                                     "scope",          is_negative ? "grant-negative" : "grant",
-                                     "action-id",      action_id,
-                                     "when",           now_buf,
-                                     "granted-by",     uid_buf,
-                                     "constraint",     authc_str,
-                                     NULL) >= sizeof (auth_buf)) {
+        size_t len;
+        if ((len = kit_string_entry_create (auth_buf, sizeof (auth_buf),
+                                            "scope",          is_negative ? "grant-negative" : "grant",
+                                            "action-id",      action_id,
+                                            "when",           now_buf,
+                                            "granted-by",     uid_buf,
+                                            NULL)) >= sizeof (auth_buf)) {
                 kit_warning ("polkit-explicit-grant-helper: authbuf is too small");
                 goto out;
         }
+        if (authc_str_len > 0) {
+                if (sizeof (auth_buf) - len < authc_str_len + 1) {
+                        kit_warning ("polkit-explicit-grant-helper: authbuf is too small");
+                        goto out;
+                }
+                strncpy (auth_buf + len, authc_str, authc_str_len + 1);
+        }
 
-        if (_polkit_authorization_db_auth_file_add (PACKAGE_LOCALSTATE_DIR "/lib/PolicyKit", 
-                                                    FALSE, 
+        if (_polkit_authorization_db_auth_file_add (FALSE, 
                                                     target_uid, 
                                                     auth_buf)) {
                 ret = 0;
diff --git a/src/polkit-grant/polkit-grant-helper.c b/src/polkit-grant/polkit-grant-helper.c
index c2f74ad..a3edefc 100644
--- a/src/polkit-grant/polkit-grant-helper.c
+++ b/src/polkit-grant/polkit-grant-helper.c
@@ -640,19 +640,20 @@ main (int argc, char *argv[])
                 fprintf (stderr, "polkit-grant-helper: no uid for caller\n");
                 goto out;
         }
-        if (!polkit_caller_get_ck_session (caller, &session)) {
-                fprintf (stderr, "polkit-grant-helper: caller is not in a session\n");
-                goto out;
-        }
-        if (!polkit_session_get_ck_objref (session, &session_objpath)) {
-                fprintf (stderr, "polkit-grant-helper: caller is not in a session\n");
-                goto out;
+
+        /* This user does not have to be in a session.. for example, one might 
+         * use <allow_any>auth_admin</allow_any>...
+         */
+        session = NULL;
+        session_objpath = NULL;
+        if (polkit_caller_get_ck_session (caller, &session) && session != NULL) {
+                if (!polkit_session_get_ck_objref (session, &session_objpath)) {
+                        session = NULL;
+                        session_objpath = NULL;
+                }
         }
 
-        /* Use libpolkit to
-         *
-         * - figure out if the caller can really auth to do the action
-         * - learn what ConsoleKit session the caller belongs to
+        /* Use libpolkit to figure out if the caller can really auth to do the action
          */
         if (!verify_with_polkit (context, caller, action, &result, &admin_users))
                 goto out;
@@ -838,6 +839,11 @@ main (int argc, char *argv[])
 
         case POLKIT_RESULT_ONLY_VIA_ADMIN_AUTH_KEEP_SESSION:
         case POLKIT_RESULT_ONLY_VIA_SELF_AUTH_KEEP_SESSION:
+                if (session == NULL || session_objpath == NULL) {
+                        fprintf (stderr, "polkit-grant-helper: cannot grant to session when not in a session\n");
+                        ret = 2;
+                        goto out;
+                }
                 dbres = polkit_authorization_db_add_entry_session (polkit_context_get_authorization_db (context), 
                                                                    action, 
                                                                    caller,
diff --git a/src/polkit/polkit-authorization-constraint.c b/src/polkit/polkit-authorization-constraint.c
index bbc4fe7..f864d72 100644
--- a/src/polkit/polkit-authorization-constraint.c
+++ b/src/polkit/polkit-authorization-constraint.c
@@ -71,20 +71,14 @@
 struct _PolKitAuthorizationConstraint
 {
         int refcount;
-        PolKitAuthorizationConstraintFlags flags;
+        PolKitAuthorizationConstraintType type;
 };
 
-static PolKitAuthorizationConstraint _null_constraint = {-1, 0};
-
 static PolKitAuthorizationConstraint _local_constraint = {-1, 
-                                                          POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL};
+                                                          POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL};
 
 static PolKitAuthorizationConstraint _active_constraint = {-1, 
-                                                          POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE};
-
-static PolKitAuthorizationConstraint _local_active_constraint = {-1, 
-                                                                 POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL |
-                                                                 POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE};
+                                                          POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE};
 
 PolKitAuthorizationConstraint *
 _polkit_authorization_constraint_new (const char *entry_in_auth_file)
@@ -153,7 +147,7 @@ void
 polkit_authorization_constraint_debug (PolKitAuthorizationConstraint *authc)
 {
         kit_return_if_fail (authc != NULL);
-        _pk_debug ("PolKitAuthorizationConstraint: refcount=%d", authc->refcount);
+        _pk_debug ("PolKitAuthorizationConstraint: refcount=%d type=%d", authc->refcount, authc->type);
 }
 
 /**
@@ -180,7 +174,7 @@ polkit_authorization_constraint_validate (PolKitAuthorizationConstraint *authc)
  * @session: the session
  *
  * Determine if the given session satisfies the conditions imposed by
- * the given constraint
+ * the given constraint.
  *
  * Returns: #TRUE if, and only if, the given session satisfies the
  * conditions imposed by the given constraint.
@@ -203,12 +197,12 @@ polkit_authorization_constraint_check_session (PolKitAuthorizationConstraint *au
         polkit_session_get_ck_is_local (session, &is_local);
         polkit_session_get_ck_is_active (session, &is_active);
 
-        if (authc->flags & POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL)  {
+        if (authc->type == POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL)  {
                 if (!is_local)
                         goto out;
         }
 
-        if (authc->flags & POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE)  {
+        if (authc->type == POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE)  {
                 if (!is_active)
                         goto out;
         }
@@ -247,7 +241,8 @@ polkit_authorization_constraint_check_caller (PolKitAuthorizationConstraint *aut
         if (polkit_caller_get_ck_session (caller, &session) && session != NULL) {
                 ret = polkit_authorization_constraint_check_session (authc, session);
         } else {
-                if (authc->flags == 0) {
+                if (authc->type != POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL &&
+                    authc->type != POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE) {
                         ret = TRUE;
                 }
         }
@@ -256,44 +251,22 @@ polkit_authorization_constraint_check_caller (PolKitAuthorizationConstraint *aut
 }
 
 /**
- * polkit_authorization_constraint_get_flags:
+ * polkit_authorization_constraint_type:
  * @authc: the object
  *
  * Describe the constraint; this is only useful when inspecting an
  * authorization to present information to the user (e.g. as
  * polkit-auth(1) does).
  *
- * Note that the flags returned may not fully describe the constraint
- * and shouldn't be used to perform checking against #PolKitCaller or
- * #PolKitSession objects. Use the
- * polkit_authorization_constraint_check_caller() and
- * polkit_authorization_constraint_check_session() methods for that
- * instead.
- *
- * Returns: flags from #PolKitAuthorizationConstraintFlags
+ * Returns: type from #PolKitAuthorizationConstraintFlags
  *
  * Since: 0.7
  */
-PolKitAuthorizationConstraintFlags
-polkit_authorization_constraint_get_flags (PolKitAuthorizationConstraint *authc)
+PolKitAuthorizationConstraintType
+polkit_authorization_constraint_type (PolKitAuthorizationConstraint *authc)
 {
         kit_return_val_if_fail (authc != NULL, FALSE);
-        return authc->flags;
-}
-
-/**
- * polkit_authorization_constraint_get_null:
- *
- * Get a #PolKitAuthorizationConstraint object that represents no constraints.
- *
- * Returns: the constraint; the caller shall not unref this object
- *
- * Since: 0.7
- */
-PolKitAuthorizationConstraint *
-polkit_authorization_constraint_get_null (void)
-{
-        return &_null_constraint;
+        return authc->type;
 }
 
 /**
@@ -329,23 +302,6 @@ polkit_authorization_constraint_get_require_active (void)
 }
 
 /**
- * polkit_authorization_constraint_get_require_local_active:
- *
- * Get a #PolKitAuthorizationConstraint object that represents the
- * constraint that the session or caller must be local and in an
- * active session.
- *
- * Returns: the constraint; the caller shall not unref this object
- *
- * Since: 0.7
- */
-PolKitAuthorizationConstraint *
-polkit_authorization_constraint_get_require_local_active (void)
-{
-        return &_local_active_constraint;
-}
-
-/**
  * polkit_authorization_constraint_to_string:
  * @authc: the object
  * @out_buf: buffer to store the string representation in
@@ -367,19 +323,15 @@ polkit_authorization_constraint_to_string (PolKitAuthorizationConstraint *authc,
 {
         kit_return_val_if_fail (authc != NULL, buf_size);
 
-        switch (authc->flags) {
+        switch (authc->type) {
         default:
-        case 0:
                 return snprintf (out_buf, buf_size, "none");
 
-        case POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL:
+        case POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL:
                 return snprintf (out_buf, buf_size, "local");
 
-        case POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE:
+        case POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE:
                 return snprintf (out_buf, buf_size, "active");
-
-        case POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL|POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE:
-                return snprintf (out_buf, buf_size, "local+active");
         }
 }
 
@@ -401,18 +353,12 @@ polkit_authorization_constraint_from_string (const char *str)
 
         ret = NULL;
 
-        if (strcmp (str, "none") == 0) {
-                ret = polkit_authorization_constraint_get_null ();
-                goto out;
-        } else if (strcmp (str, "local") == 0) {
+        if (strcmp (str, "local") == 0) {
                 ret = polkit_authorization_constraint_get_require_local ();
                 goto out;
         } else if (strcmp (str, "active") == 0) {
                 ret = polkit_authorization_constraint_get_require_active ();
                 goto out;
-        } else if (strcmp (str, "local+active") == 0) {
-                ret = polkit_authorization_constraint_get_require_local_active ();
-                goto out;
         }
 
 out:
@@ -422,54 +368,69 @@ out:
 /**
  * polkit_authorization_constraint_get_from_caller:
  * @caller: caller
+ * @out_array: return location for constraints
+ * @array_size: size of the passed array
  *
- * Given a caller, return the most restrictive constraint
- * possible. For example, if the caller is local and active, a
- * constraint requiring this will be returned. 
+ * Given a caller, return the set of most restrictive constraints
+ * possible. For example, if the caller is local and active, a set
+ * constraints requiring this will be returned.
  *
  * This function is typically used when the caller obtains an
- * authorization through authentication; the goal is to put a
+ * authorization through authentication; the goal is to put
  * constraints on the authorization such that it's only valid when the
  * caller is in the context as where she obtained it.
  *
- * Returns: a #PolKitConstraint object; this function will never return #NULL.
+ * The caller must unref all the created objects using
+ * polkit_authorization_constraint_unref().
+ *
+ * Returns: This function do not create more than @array_size constraints
+ * (including the trailing %NULL). If the output was truncated due to
+ * this limit then the return value is the number of objects (not
+ * including the trailing %NULL) which would have been written to the
+ * final array if enough space had been available. Thus, a return
+ * value of @array_size or more means that the output was truncated. 
  */
-PolKitAuthorizationConstraint *
-polkit_authorization_constraint_get_from_caller (PolKitCaller *caller)
+size_t 
+polkit_authorization_constraint_get_from_caller (PolKitCaller *caller, 
+                                                 PolKitAuthorizationConstraint **out_array, 
+                                                 size_t array_size)
 {
+        unsigned int ret;
         polkit_bool_t is_local;
         polkit_bool_t is_active;
         PolKitSession *session;
-        PolKitAuthorizationConstraint *ret;
 
-        /* caller is not in a session so use the null constraint */
+        kit_return_val_if_fail (caller != NULL, 0);
+        kit_return_val_if_fail (out_array != NULL, 0);
+
+        ret = 0;
+
         if (!polkit_caller_get_ck_session (caller, &session) || session == NULL) {
-                ret = polkit_authorization_constraint_get_null ();
                 goto out;
         }
-
+        
         polkit_session_get_ck_is_local (session, &is_local);
         polkit_session_get_ck_is_active (session, &is_active);
 
         if (is_local) {
-                if (is_active) {
-                        ret = polkit_authorization_constraint_get_require_local_active ();
-                } else {
-                        ret = polkit_authorization_constraint_get_require_local ();
-                }
-        } else {
-                if (is_active) {
-                        ret = polkit_authorization_constraint_get_require_active ();
-                } else {
-                        ret = polkit_authorization_constraint_get_null ();
-                }
+                if (ret < array_size)
+                        out_array[ret] = polkit_authorization_constraint_get_require_local ();
+                ret++;
+        } 
+
+        if (is_active) {
+                if (ret < array_size)
+                        out_array[ret] = polkit_authorization_constraint_get_require_active ();
+                ret++;
         }
 
 out:
+        if (ret < array_size)
+                out_array[ret] = NULL;
+
         return ret;
 }
 
-
 /**
  * polkit_authorization_constraint_equal:
  * @a: first constraint
@@ -487,7 +448,8 @@ polkit_authorization_constraint_equal (PolKitAuthorizationConstraint *a, PolKitA
         kit_return_val_if_fail (a != NULL, FALSE);
         kit_return_val_if_fail (b != NULL, FALSE);
 
-        return a->flags == b->flags;
+        /* When we add more types this needs expansion */
+        return a->type == b->type;
 }
 
 #ifdef POLKIT_BUILD_TESTS
@@ -506,11 +468,8 @@ _tst1 (PolKitSession *s, PolKitAuthorizationConstraint *ac, polkit_bool_t *out_r
         *out_result = polkit_authorization_constraint_check_session (ac, s);
 
         if ((c = polkit_caller_new ()) != NULL) {
-                if (ac->flags == 0)  {
-                        kit_assert (polkit_authorization_constraint_check_caller (ac, c) == TRUE);
-                } else {
-                        kit_assert (polkit_authorization_constraint_check_caller (ac, c) == FALSE);
-                }
+                /* we know that the ac's passed always will be REQUIRE_ACTIVE or REQUIRE_LOCAL */
+                kit_assert (polkit_authorization_constraint_check_caller (ac, c) == FALSE);
 
                 kit_assert (polkit_caller_set_ck_session (c, s));
                 kit_assert (*out_result == polkit_authorization_constraint_check_caller (ac, c));
@@ -539,6 +498,7 @@ _tst2 (PolKitAuthorizationConstraint *ac)
         }
 }
 
+#if 0
 static polkit_bool_t
 _tst3 (PolKitSession *s, PolKitAuthorizationConstraint *compare_to, polkit_bool_t *ret)
 {
@@ -572,18 +532,18 @@ _tst3 (PolKitSession *s, PolKitAuthorizationConstraint *compare_to, polkit_bool_
 out:
         return is_oom;
 }
+#endif
 
 static polkit_bool_t
 _run_test (void)
 {
         PolKitAuthorizationConstraint *ac;
-        PolKitAuthorizationConstraintFlags flags;
+        PolKitAuthorizationConstraintType type;
         PolKitSession *s_active;
         PolKitSession *s_inactive;
         PolKitSession *s_active_remote;
         PolKitSession *s_inactive_remote;
         polkit_bool_t ret;
-        int n;
 
         if ((s_active = polkit_session_new ()) != NULL) {
                 if (!polkit_session_set_ck_objref (s_active, "/session1")) {
@@ -627,22 +587,10 @@ _run_test (void)
                 }
         }
 
-        /* null constraint */
-        kit_assert ((ac = polkit_authorization_constraint_get_null ()) != NULL);
-        polkit_authorization_constraint_ref (ac);
-        polkit_authorization_constraint_unref (ac);
-        flags = polkit_authorization_constraint_get_flags (ac);
-        kit_assert (flags == 0);
-        kit_assert (_tst1 (s_active, ac, &ret) || ret == TRUE);
-        kit_assert (_tst1 (s_inactive, ac, &ret) || ret == TRUE);
-        kit_assert (_tst1 (s_active_remote, ac, &ret) || ret == TRUE);
-        kit_assert (_tst1 (s_inactive_remote, ac, &ret) || ret == TRUE);
-        _tst2 (ac);
-
         /* local constraint */
         kit_assert ((ac = polkit_authorization_constraint_get_require_local ()) != NULL);
-        flags = polkit_authorization_constraint_get_flags (ac);
-        kit_assert (flags == POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL);
+        type = polkit_authorization_constraint_type (ac);
+        kit_assert (type == POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL);
         kit_assert (_tst1 (s_active, ac, &ret) || ret == TRUE);
         kit_assert (_tst1 (s_inactive, ac, &ret) || ret == TRUE);
         kit_assert (_tst1 (s_active_remote, ac, &ret) || ret == FALSE);
@@ -651,25 +599,16 @@ _run_test (void)
 
         /* active constraint */
         kit_assert ((ac = polkit_authorization_constraint_get_require_active ()) != NULL);
-        flags = polkit_authorization_constraint_get_flags (ac);
-        kit_assert (flags == POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE);
+        type = polkit_authorization_constraint_type (ac);
+        kit_assert (type == POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE);
         kit_assert (_tst1 (s_active, ac, &ret) || ret == TRUE);
         kit_assert (_tst1 (s_inactive, ac, &ret) || ret == FALSE);
         kit_assert (_tst1 (s_active_remote, ac, &ret) || ret == TRUE);
         kit_assert (_tst1 (s_inactive_remote, ac, &ret) || ret == FALSE);
         _tst2 (ac);
 
-        /* local+active constraint */
-        kit_assert ((ac = polkit_authorization_constraint_get_require_local_active ()) != NULL);
-        flags = polkit_authorization_constraint_get_flags (ac);
-        kit_assert (flags == (POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL|
-                            POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE));
-        kit_assert (_tst1 (s_active, ac, &ret) || ret == TRUE);
-        kit_assert (_tst1 (s_inactive, ac, &ret) || ret == FALSE);
-        kit_assert (_tst1 (s_active_remote, ac, &ret) || ret == FALSE);
-        kit_assert (_tst1 (s_inactive_remote, ac, &ret) || ret == FALSE);
-        _tst2 (ac);
 
+#if 0
         for (n = 0; n < 4; n++) {
                 PolKitSession *s;
                 polkit_bool_t expected[4];
@@ -710,8 +649,9 @@ _run_test (void)
                 kit_assert (_tst3 (s, polkit_authorization_constraint_get_require_active (), &ret) || ret == expected[2]);
                 kit_assert (_tst3 (s, polkit_authorization_constraint_get_null (), &ret) || ret == expected[3]);
         }
+#endif
 
-        if ((ac = _polkit_authorization_constraint_new ("local+active")) != NULL) {
+        if ((ac = _polkit_authorization_constraint_new ("local")) != NULL) {
                 polkit_authorization_constraint_validate (ac);
                 polkit_authorization_constraint_debug (ac);
                 polkit_authorization_constraint_ref (ac);
diff --git a/src/polkit/polkit-authorization-constraint.h b/src/polkit/polkit-authorization-constraint.h
index 84144a4..9c0dd80 100644
--- a/src/polkit/polkit-authorization-constraint.h
+++ b/src/polkit/polkit-authorization-constraint.h
@@ -44,38 +44,32 @@
 POLKIT_BEGIN_DECLS
 
 /**
- * PolKitAuthorizationConstraintFlags:
- * @POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL: the session or
+ * PolKitAuthorizationConstraintType:
+ * @POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL: the session or
  * caller must be local
- * @POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE: the session or
+ * @POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE: the session or
  * caller must be in an active session
- * @POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL_ACTIVE: short
- * hand for the flags POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL
- * and POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE.
  *
- * This enumeration describes different conditions, not mutually
- * exclusive, to help describe an authorization constraint.
+ * This enumeration describes the type of the authorization
+ * constraint.
  */
 typedef enum {
-        POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL         = 1 << 0,
-        POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE        = 1 << 1,
-        POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL_ACTIVE  = (1 << 0) | (1 << 1)
-} PolKitAuthorizationConstraintFlags;
+        POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL,
+        POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE
+} PolKitAuthorizationConstraintType;
 
 struct _PolKitAuthorizationConstraint;
 typedef struct _PolKitAuthorizationConstraint PolKitAuthorizationConstraint;
 
-PolKitAuthorizationConstraint *polkit_authorization_constraint_get_null (void);
 PolKitAuthorizationConstraint *polkit_authorization_constraint_get_require_local (void);
 PolKitAuthorizationConstraint *polkit_authorization_constraint_get_require_active (void);
-PolKitAuthorizationConstraint *polkit_authorization_constraint_get_require_local_active (void);
 
 PolKitAuthorizationConstraint *polkit_authorization_constraint_ref      (PolKitAuthorizationConstraint *authc);
 void                           polkit_authorization_constraint_unref    (PolKitAuthorizationConstraint *authc);
 void                           polkit_authorization_constraint_debug    (PolKitAuthorizationConstraint *authc);
 polkit_bool_t                  polkit_authorization_constraint_validate (PolKitAuthorizationConstraint *authc);
 
-PolKitAuthorizationConstraintFlags polkit_authorization_constraint_get_flags (PolKitAuthorizationConstraint *authc);
+PolKitAuthorizationConstraintType polkit_authorization_constraint_type (PolKitAuthorizationConstraint *authc);
 
 polkit_bool_t polkit_authorization_constraint_check_session (PolKitAuthorizationConstraint *authc,
                                                              PolKitSession                 *session);
@@ -86,7 +80,7 @@ polkit_bool_t polkit_authorization_constraint_check_caller (PolKitAuthorizationC
 size_t                         polkit_authorization_constraint_to_string (PolKitAuthorizationConstraint *authc, char *out_buf, size_t buf_size);
 PolKitAuthorizationConstraint *polkit_authorization_constraint_from_string (const char *str);
 
-PolKitAuthorizationConstraint *polkit_authorization_constraint_get_from_caller (PolKitCaller *caller);
+size_t polkit_authorization_constraint_get_from_caller (PolKitCaller *caller, PolKitAuthorizationConstraint **out_array, size_t array_size);
 
 polkit_bool_t                  polkit_authorization_constraint_equal (PolKitAuthorizationConstraint *a,
                                                                       PolKitAuthorizationConstraint *b);
diff --git a/src/polkit/polkit-authorization-db.c b/src/polkit/polkit-authorization-db.c
index 8bc0636..259e841 100644
--- a/src/polkit/polkit-authorization-db.c
+++ b/src/polkit/polkit-authorization-db.c
@@ -627,21 +627,32 @@ typedef struct {
 } CheckDataSession;
 
 static polkit_bool_t 
+_check_constraint_session (PolKitAuthorization *auth, PolKitAuthorizationConstraint *authc, void *user_data)
+{
+        PolKitSession *session = (PolKitSession *) user_data;
+
+        if (!polkit_authorization_constraint_check_session (authc, session))
+                goto no_match;
+
+        return FALSE;
+no_match:
+        return TRUE;
+}
+
+static polkit_bool_t 
 _check_auth_for_session (PolKitAuthorizationDB *authdb, PolKitAuthorization *auth, void *user_data)
 {
         polkit_bool_t ret;
         uid_t pimp_uid;
         polkit_bool_t is_negative;
         CheckDataSession *cd = (CheckDataSession *) user_data;
-        PolKitAuthorizationConstraint *constraint;
 
         ret = FALSE;
 
         if (strcmp (polkit_authorization_get_action_id (auth), cd->action_id) != 0)
                 goto no_match;
 
-        constraint = polkit_authorization_get_constraint (auth);
-        if (!polkit_authorization_constraint_check_session (constraint, cd->session))
+        if (polkit_authorization_constraints_foreach (auth, _check_constraint_session, cd->session))
                 goto no_match;
 
         switch (polkit_authorization_get_scope (auth))
@@ -772,6 +783,19 @@ typedef struct {
 } CheckData;
 
 static polkit_bool_t 
+_check_constraint_caller (PolKitAuthorization *auth, PolKitAuthorizationConstraint *authc, void *user_data)
+{
+        PolKitCaller *caller = (PolKitCaller *) user_data;
+
+        if (!polkit_authorization_constraint_check_caller (authc, caller))
+                goto no_match;
+
+        return FALSE;
+no_match:
+        return TRUE;
+}
+
+static polkit_bool_t 
 _check_auth_for_caller (PolKitAuthorizationDB *authdb, PolKitAuthorization *auth, void *user_data)
 {
         polkit_bool_t ret;
@@ -780,15 +804,13 @@ _check_auth_for_caller (PolKitAuthorizationDB *authdb, PolKitAuthorization *auth
         pid_t caller_pid;
         polkit_uint64_t caller_pid_start_time;
         CheckData *cd = (CheckData *) user_data;
-        PolKitAuthorizationConstraint *constraint;
 
         ret = FALSE;
 
         if (strcmp (polkit_authorization_get_action_id (auth), cd->action_id) != 0)
                 goto no_match;
 
-        constraint = polkit_authorization_get_constraint (auth);
-        if (!polkit_authorization_constraint_check_caller (constraint, cd->caller))
+        if (polkit_authorization_constraints_foreach (auth, _check_constraint_caller, cd->caller))
                 goto no_match;
 
         switch (polkit_authorization_get_scope (auth))
@@ -1143,7 +1165,7 @@ _run_test (void)
         const char test_pu1_run[] =
                 "";
         const char test_pu1_lib[] =
-                "scope=grant:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0:constraint=none\n";
+                "scope=grant:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0\n";
         const char test_pu2_run[] =
                 "";
         const char test_pu2_lib[] =
@@ -1170,9 +1192,9 @@ _run_test (void)
                 goto out;
         
         if (snprintf (test_pu3_run, sizeof (test_pu3_run), 
-                      "scope=process:pid=%d:pid-start-time=%lld:action-id=org.example.per-process:when=1196307507:auth-as=500:constraint=none\n"
-                      "scope=process-one-shot:pid=%d:pid-start-time=%lld:action-id=org.example.per-process-one-shot:when=1196307507:auth-as=500:constraint=none\n"
-                      "scope=session:session-id=%%2FSession1:action-id=org.example.per-session:when=1196307507:auth-as=500:constraint=none\n",
+                      "scope=process:pid=%d:pid-start-time=%lld:action-id=org.example.per-process:when=1196307507:auth-as=500\n"
+                      "scope=process-one-shot:pid=%d:pid-start-time=%lld:action-id=org.example.per-process-one-shot:when=1196307507:auth-as=500\n"
+                      "scope=session:session-id=%%2FSession1:action-id=org.example.per-session:when=1196307507:auth-as=500\n",
                       getpid (), start_time,
                       getpid (), start_time) >= (int) sizeof (test_pu3_run))
                 goto fail;
diff --git a/src/polkit/polkit-authorization-db.h b/src/polkit/polkit-authorization-db.h
index 68e0374..c206a32 100644
--- a/src/polkit/polkit-authorization-db.h
+++ b/src/polkit/polkit-authorization-db.h
@@ -149,13 +149,13 @@ polkit_bool_t polkit_authorization_db_add_entry_always           (PolKitAuthoriz
 polkit_bool_t polkit_authorization_db_grant_to_uid           (PolKitAuthorizationDB          *authdb,
                                                               PolKitAction                   *action,
                                                               uid_t                           uid,
-                                                              PolKitAuthorizationConstraint  *constraint,
+                                                              PolKitAuthorizationConstraint **constraints,
                                                               PolKitError                   **error);
 
 polkit_bool_t polkit_authorization_db_grant_negative_to_uid           (PolKitAuthorizationDB          *authdb,
                                                                        PolKitAction                   *action,
                                                                        uid_t                           uid,
-                                                                       PolKitAuthorizationConstraint  *constraint,
+                                                                       PolKitAuthorizationConstraint **constraints,
                                                                        PolKitError                   **error);
 
 polkit_bool_t polkit_authorization_db_revoke_entry (PolKitAuthorizationDB *authdb,
diff --git a/src/polkit/polkit-authorization.c b/src/polkit/polkit-authorization.c
index 3ab8b5f..25ef297 100644
--- a/src/polkit/polkit-authorization.c
+++ b/src/polkit/polkit-authorization.c
@@ -74,7 +74,7 @@ struct _PolKitAuthorization
         char *entry_in_auth_file;
 
         PolKitAuthorizationScope scope;
-        PolKitAuthorizationConstraint *constraint;
+        KitList *constraints;
 
         char *action_id;
         uid_t uid;
@@ -101,7 +101,7 @@ _polkit_authorization_get_authfile_entry (PolKitAuthorization *auth)
 
 
 /**
- * polkit_authorization_get_type:
+ * polkit_authorization_type:
  * @auth: the authorization object
  *
  * Determine the type of authorization.
@@ -111,7 +111,7 @@ _polkit_authorization_get_authfile_entry (PolKitAuthorization *auth)
  * Since: 0.7
  */
 PolKitAuthorizationType 
-polkit_authorization_get_type (PolKitAuthorization *auth)
+polkit_authorization_type (PolKitAuthorization *auth)
 {
         return POLKIT_AUTHORIZATION_TYPE_UID;
 }
@@ -127,13 +127,13 @@ typedef struct {
 } EntryParserData;
 
 enum {
-        ATTR_PID = 1<<0,
+        ATTR_PID            = 1<<0,
         ATTR_PID_START_TIME = 1<<1,
-        ATTR_SESSION_ID = 1<<2,
-        ATTR_ACTION_ID = 1<<3,
-        ATTR_WHEN = 1<<4,
-        ATTR_AUTH_AS = 1<<5,
-        ATTR_GRANTED_BY = 1<<6,
+        ATTR_SESSION_ID     = 1<<2,
+        ATTR_ACTION_ID      = 1<<3,
+        ATTR_WHEN           = 1<<4,
+        ATTR_AUTH_AS        = 1<<5,
+        ATTR_GRANTED_BY     = 1<<6,
 };
 
 static kit_bool_t
@@ -249,9 +249,17 @@ _parse_entry (const char *key, const char *value, void *user_data)
                         goto error;
 
         } else if (strcmp (key, "constraint") == 0) {
-                auth->constraint = polkit_authorization_constraint_from_string (value);
-                if (auth->constraint == NULL)
+                PolKitAuthorizationConstraint *c;
+                KitList *l;
+
+                c = polkit_authorization_constraint_from_string (value);
+                if (c == NULL)
+                        goto error;
+
+                l = kit_list_append (auth->constraints, c);
+                if (l == NULL)
                         goto error;
+                auth->constraints = l;
         }
 
         ret = TRUE;
@@ -337,6 +345,8 @@ polkit_authorization_ref (PolKitAuthorization *auth)
 void
 polkit_authorization_unref (PolKitAuthorization *auth)
 {
+        KitList *l;
+
         kit_return_if_fail (auth != NULL);
         auth->refcount--;
         if (auth->refcount > 0) 
@@ -345,8 +355,14 @@ polkit_authorization_unref (PolKitAuthorization *auth)
         kit_free (auth->entry_in_auth_file);
         kit_free (auth->action_id);
         kit_free (auth->session_id);
-        if (auth->constraint != NULL)
-                polkit_authorization_constraint_unref (auth->constraint);
+
+        for (l = auth->constraints; l != NULL; l = l->next) {
+                PolKitAuthorizationConstraint *c = (PolKitAuthorizationConstraint *) l->data;
+                polkit_authorization_constraint_unref (c);
+        }
+        if (auth->constraints != NULL)
+                kit_list_free (auth->constraints);
+
         kit_free (auth);
 }
 
@@ -414,7 +430,8 @@ polkit_authorization_get_action_id (PolKitAuthorization *auth)
  * Get the scope of the authorization; e.g. whether it's confined to a
  * single process, a single session or can be retained
  * indefinitely. Also keep in mind that an authorization is subject to
- * constraints, see polkit_authorization_get_constraint() for details.
+ * constraints, see polkit_authorization_constraints_foreach() for
+ * details.
  *
  * Returns: the scope
  *
@@ -590,20 +607,35 @@ polkit_authorization_was_granted_explicitly (PolKitAuthorization *auth,
 }
 
 /**
- * polkit_authorization_get_constraint:
+ * polkit_authorization_constraints_foreach:
  * @auth: the object
+ * @cb: callback function
+ * @user_data: user data
  *
- * Get the constraint associated with an authorization.
+ * Iterate over all constraints associated with an authorization.
  *
- * Returns: The constraint. Caller shall not unref this object.
+ * Returns: %TRUE if the caller short-circuited the iteration.
  *
  * Since: 0.7
  */ 
-PolKitAuthorizationConstraint *
-polkit_authorization_get_constraint (PolKitAuthorization *auth)
+polkit_bool_t
+polkit_authorization_constraints_foreach (PolKitAuthorization *auth, 
+                                          PolKitAuthorizationConstraintsForeachFunc cb, 
+                                          void *user_data)
 {
-        kit_return_val_if_fail (auth != NULL, FALSE);
-        return auth->constraint;
+        KitList *i;
+
+        kit_return_val_if_fail (auth != NULL, TRUE);
+        kit_return_val_if_fail (cb != NULL, TRUE);
+
+        for (i = auth->constraints; i != NULL; i = i->next) {
+                PolKitAuthorizationConstraint *c = i->data;
+
+                if (cb (auth, c, user_data))
+                        return TRUE;
+        }
+
+        return FALSE;
 }
 
 #ifdef POLKIT_BUILD_TESTS
@@ -648,23 +680,23 @@ _run_test (void)
                 "scope=process:granted-by=1:granted-by=2",
 
                 /* malformed components */
-                "scope=process:pid=14485xyz:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local%2Bactive",
-                "scope=process:pid=14485:pid-start-time=26817340xyz:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local%2Bactive",
-                "scope=process:pid=14485:pid-start-time=26817340:0xyaction-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local%2Bactive",
-                "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763xyz:auth-as=500:constraint=local%2Bactive",
-                "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:500xyz:constraint=local%2Bactive",
+                "scope=process:pid=14485xyz:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local",
+                "scope=process:pid=14485:pid-start-time=26817340xyz:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local",
+                "scope=process:pid=14485:pid-start-time=26817340:0xyaction-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local",
+                "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763xyz:auth-as=500:constraint=local",
+                "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:500xyz:constraint=local",
                 "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=MALFORMED_CONSTRAINT",
 
                 /* TODO: validate ConsoleKit paths
-                   "scope=session:xyz/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779:auth-as=500:constraint=local%2Bactive",*/
-                "scope=session:/org/freedesktop/ConsoleKit/Session1:0xyaction-id=org.gnome.policykit.examples.punch:1194631779:auth-as=500:constraint=local%2Bactive",
-                "scope=session:/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779xyz:auth-as=500:constraint=local%2Bactive",
-                "scope=session:/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779:500xyz:constraint=local%2Bactive",
+                   "scope=session:xyz/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779:auth-as=500:constraint=local",*/
+                "scope=session:/org/freedesktop/ConsoleKit/Session1:0xyaction-id=org.gnome.policykit.examples.punch:1194631779:auth-as=500:constraint=local",
+                "scope=session:/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779xyz:auth-as=500:constraint=local",
+                "scope=session:/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779:500xyz:constraint=local",
                 "scope=session:/org/freedesktop/ConsoleKit/Session1:action-id=org.gnome.policykit.examples.punch:1194631779:auth-as=500:constraint=MALFORMED",
 
-                "scope=always:action-id=0xyorg.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=500:constraint=local%2Bactive",
-                "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=xyz1193598494:auth-as=500:constraint=local%2Bactive",
-                "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=xyz500:constraint=local%2Bactive",
+                "scope=always:action-id=0xyorg.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=500:constraint=local",
+                "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=xyz1193598494:auth-as=500:constraint=local",
+                "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=xyz500:constraint=local",
                 "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=500:constraint=MALFORMED",
 
                 "scope=grant:action-id=0xyorg.freedesktop.policykit.read:when=1194634242:granted-by=0:constraint=none",
@@ -672,86 +704,86 @@ _run_test (void)
                 "scope=grant:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=xyz0:constraint=none",
                 "scope=grant:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0:constraint=MALFORMED",
 
-                "random-future-key=some-value:scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as500:constraint=local%2Bactive",
+                "random-future-key=some-value:scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as500:constraint=local",
 
         };
         size_t num_invalid_auths = sizeof (invalid_auths) / sizeof (const char *);
         TestAuth valid_auths[] = {
                 {
-                        "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=500:constraint=local%2Bactive",
+                        "scope=always:action-id=org.gnome.clockapplet.mechanism.settimezone:when=1193598494:auth-as=500",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_ALWAYS,
                         "org.gnome.clockapplet.mechanism.settimezone",
                         1193598494,
                         0, 0, NULL,
-                        polkit_authorization_constraint_get_require_local_active (),
+                        NULL,
                         FALSE, 500
                 },
 
                 {
-                        "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500:constraint=local%2Bactive",
+                        "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.frobnicate:when=1194631763:auth-as=500",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_PROCESS,
                         "org.gnome.policykit.examples.frobnicate",
                         1194631763,
                         14485, 26817340, NULL,
-                        polkit_authorization_constraint_get_require_local_active (),
+                        NULL,
                         FALSE, 500
                 },
 
                 {
-                        "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.tweak:when=1194631774:auth-as=0:constraint=local%2Bactive",
+                        "scope=process:pid=14485:pid-start-time=26817340:action-id=org.gnome.policykit.examples.tweak:when=1194631774:auth-as=0",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_PROCESS,
                         "org.gnome.policykit.examples.tweak",
                         1194631774,
                         14485, 26817340, NULL,
-                        polkit_authorization_constraint_get_require_local_active (),
+                        NULL,
                         FALSE, 0
                 },
 
                 {
-                        "scope=session:session-id=%2Forg%2Ffreedesktop%2FConsoleKit%2FSession1:action-id=org.gnome.policykit.examples.punch:when=1194631779:auth-as=500:constraint=local%2Bactive",
+                        "scope=session:session-id=%2Forg%2Ffreedesktop%2FConsoleKit%2FSession1:action-id=org.gnome.policykit.examples.punch:when=1194631779:auth-as=500",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_SESSION,
                         "org.gnome.policykit.examples.punch",
                         1194631779,
                         0, 0, "/org/freedesktop/ConsoleKit/Session1",
-                        polkit_authorization_constraint_get_require_local_active (),
+                        NULL,
                         FALSE, 500
                 },
 
                 {
-                        "scope=process-one-shot:pid=27860:pid-start-time=26974819:action-id=org.gnome.policykit.examples.jump:when=1194633344:auth-as=500:constraint=local%2Bactive",
+                        "scope=process-one-shot:pid=27860:pid-start-time=26974819:action-id=org.gnome.policykit.examples.jump:when=1194633344:auth-as=500",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_PROCESS_ONE_SHOT,
                         "org.gnome.policykit.examples.jump",
                         1194633344,
                         27860, 26974819, NULL,
-                        polkit_authorization_constraint_get_require_local_active (),
+                        NULL,
                         FALSE, 500
                 },
 
                 {
-                        "scope=grant:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0:constraint=none",
+                        "scope=grant:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_ALWAYS,
                         "org.freedesktop.policykit.read",
                         1194634242,
                         0, 0, NULL,
-                        polkit_authorization_constraint_get_null (),
+                        NULL,
                         TRUE, 0
                 },
 
                 /* this test ensures we can add new key/value pairs in the future */
                 {
-                        "scope=grant:FUTURE-KEY=FUTURE-VALUE:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0:constraint=none",
+                        "scope=grant:FUTURE-KEY=FUTURE-VALUE:action-id=org.freedesktop.policykit.read:when=1194634242:granted-by=0",
                         POLKIT_AUTHORIZATION_TYPE_UID,
                         POLKIT_AUTHORIZATION_SCOPE_ALWAYS,
                         "org.freedesktop.policykit.read",
                         1194634242,
                         0, 0, NULL,
-                        polkit_authorization_constraint_get_null (),
+                        NULL,
                         TRUE, 0
                 },
 
@@ -761,7 +793,7 @@ _run_test (void)
         pid_t pid;
         polkit_uint64_t pid_start_time;
         const char *s;
-        PolKitAuthorizationConstraint *ac;
+        //PolKitAuthorizationConstraint *ac;
         uid_t uid;
         polkit_bool_t is_neg;
 
@@ -774,7 +806,7 @@ _run_test (void)
                         polkit_authorization_debug (a);
                         polkit_authorization_validate (a);
 
-                        kit_assert (t->type == polkit_authorization_get_type (a));
+                        kit_assert (t->type == polkit_authorization_type (a));
                         kit_assert (t->scope == polkit_authorization_get_scope (a));
                         kit_assert (t->time_of_grant == polkit_authorization_get_time_of_grant (a));
                         kit_assert (500 == polkit_authorization_get_uid (a));
@@ -799,8 +831,9 @@ _run_test (void)
 
                         kit_assert (t->time_of_grant == polkit_authorization_get_time_of_grant (a));
 
-                        kit_assert ((ac = polkit_authorization_get_constraint (a)) != NULL &&
-                                  polkit_authorization_constraint_equal (ac, t->constraint));
+                        //TODO:
+                        //kit_assert ((ac = polkit_authorization_get_constraint (a)) != NULL &&
+                        //          polkit_authorization_constraint_equal (ac, t->constraint));
 
                         if (t->explicit) {
                                 kit_assert (!polkit_authorization_was_granted_via_defaults (a, &uid));
diff --git a/src/polkit/polkit-authorization.h b/src/polkit/polkit-authorization.h
index efe7965..5428a04 100644
--- a/src/polkit/polkit-authorization.h
+++ b/src/polkit/polkit-authorization.h
@@ -89,7 +89,7 @@ typedef enum {
         POLKIT_AUTHORIZATION_TYPE_UID,
 } PolKitAuthorizationType;
 
-PolKitAuthorizationType polkit_authorization_get_type (PolKitAuthorization *auth);
+PolKitAuthorizationType polkit_authorization_type (PolKitAuthorization *auth);
 
 const char *polkit_authorization_get_action_id (PolKitAuthorization *auth);
 
@@ -97,8 +97,6 @@ uid_t polkit_authorization_get_uid (PolKitAuthorization *auth);
 
 time_t polkit_authorization_get_time_of_grant            (PolKitAuthorization *auth);
 
-PolKitAuthorizationConstraint *polkit_authorization_get_constraint (PolKitAuthorization *auth);
-
 PolKitAuthorizationScope polkit_authorization_get_scope (PolKitAuthorization *auth);
 
 
@@ -116,6 +114,25 @@ polkit_bool_t polkit_authorization_was_granted_explicitly  (PolKitAuthorization
                                                             uid_t *out_by_whom,
                                                             polkit_bool_t *out_is_negative);
 
+/**
+ * PolKitAuthorizationConstraintsForeachFunc:
+ * @auth: authorization
+ * @authc: authorization constraint
+ * @user_data: user data 
+ *
+ * Callback function for polkit_authorization_constraints_foreach().
+ *
+ * Returns: Pass #TRUE to short-circuit, e.g. stop the iteration
+ */
+typedef polkit_bool_t (*PolKitAuthorizationConstraintsForeachFunc) (PolKitAuthorization *auth,
+                                                                    PolKitAuthorizationConstraint *authc,
+                                                                    void *user_data);
+
+polkit_bool_t
+polkit_authorization_constraints_foreach (PolKitAuthorization *auth, 
+                                          PolKitAuthorizationConstraintsForeachFunc cb, 
+                                          void *user_data);
+
 POLKIT_END_DECLS
 
 #endif /* POLKIT_AUTHORIZATION_H */
diff --git a/src/polkit/polkit-private.h b/src/polkit/polkit-private.h
index 25f74cd..dd8f741 100644
--- a/src/polkit/polkit-private.h
+++ b/src/polkit/polkit-private.h
@@ -57,7 +57,7 @@ const char *_polkit_authorization_get_authfile_entry (PolKitAuthorization *auth)
 
 PolKitAuthorizationConstraint *_polkit_authorization_constraint_new (const char *entry_in_auth_file);
 
-polkit_bool_t _polkit_authorization_db_auth_file_add (const char *root, polkit_bool_t transient, uid_t uid, char *str_to_add);
+polkit_bool_t _polkit_authorization_db_auth_file_add (polkit_bool_t transient, uid_t uid, char *str_to_add);
 
 PolKitAuthorizationDB *_polkit_authorization_db_new            (void);
 void                   _polkit_authorization_db_invalidate_cache (PolKitAuthorizationDB *authdb);
diff --git a/tools/polkit-auth.c b/tools/polkit-auth.c
index 8e6a22c..2bf5248 100644
--- a/tools/polkit-auth.c
+++ b/tools/polkit-auth.c
@@ -63,7 +63,6 @@ static char *opt_revoke_action_id;
 static char *opt_user;
 static char *opt_grant_action_id;
 static char *opt_block_action_id;
-static char *opt_constraint;
 
 typedef struct {
         gboolean obtained_privilege;
@@ -388,6 +387,19 @@ get_name_from_uid (uid_t uid)
         return name;
 }
 
+static polkit_bool_t 
+_print_constraint (PolKitAuthorization *auth, PolKitAuthorizationConstraint *authc, void *user_data)
+{
+        switch (polkit_authorization_constraint_type (authc)) {
+        case POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_LOCAL:
+                printf ("  Constraint:  Session must be on a local console\n");
+                break;
+        case POLKIT_AUTHORIZATION_CONSTRAINT_TYPE_REQUIRE_ACTIVE:
+                printf ("  Constraint:  Session must be active\n");
+                break;
+        }
+        return FALSE;
+}
 
 static polkit_bool_t
 auth_iterator_cb (PolKitAuthorizationDB *authdb,
@@ -431,8 +443,6 @@ auth_iterator_cb (PolKitAuthorizationDB *authdb,
                 polkit_bool_t is_negative;
                 pid_t pid;
                 polkit_uint64_t pid_start_time;
-                const char *cstr;
-                PolKitAuthorizationConstraint *constraint;
                 PolKitAction *pk_action;
                 PolKitResult pk_result;
                 char exe[PATH_MAX];
@@ -483,20 +493,7 @@ auth_iterator_cb (PolKitAuthorizationDB *authdb,
                 }
                 printf ("  Obtained:    %s\n", time_string);
 
-                constraint = polkit_authorization_get_constraint (auth);
-                cstr = "None";
-                switch (polkit_authorization_constraint_get_flags (constraint)) {
-                case POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL:
-                        cstr = "Session must be on a local console";
-                        break;
-                case POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_ACTIVE:
-                        cstr = "Session must be active";
-                        break;
-                case POLKIT_AUTHORIZATION_CONSTRAINT_REQUIRE_LOCAL_ACTIVE:
-                        cstr = "Session must be active and on a local console";
-                        break;
-                }
-                printf ("  Constraints: %s\n", cstr);
+                polkit_authorization_constraints_foreach (auth, _print_constraint, NULL);
 
                 if (is_negative) {
                         printf ("  Negative:    Yes\n");
@@ -650,6 +647,8 @@ ensure_dbus_and_ck (void)
         return FALSE;
 }
 
+#define MAX_CONSTRAINTS 64
+
 int
 main (int argc, char *argv[])
 {
@@ -660,6 +659,8 @@ main (int argc, char *argv[])
         uid_t uid;
         pid_t pid;
         char *s;
+        PolKitAuthorizationConstraint *constraints[MAX_CONSTRAINTS];
+        unsigned int num_constraints = 0;
 
         ret = 1;
 
@@ -712,7 +713,6 @@ main (int argc, char *argv[])
         opt_obtain_action_id = NULL;
         opt_grant_action_id = NULL;
         opt_block_action_id = NULL;
-        opt_constraint = NULL;
         opt_revoke_action_id = NULL;
         opt_show_obtainable = FALSE;
         opt_user = NULL;
@@ -756,7 +756,20 @@ main (int argc, char *argv[])
 			} else if (strcmp (opt, "block") == 0) {
 				opt_block_action_id = strdup (optarg);
 			} else if (strcmp (opt, "constraint") == 0) {
-				opt_constraint = strdup (optarg);
+                                PolKitAuthorizationConstraint *c;
+
+                                c = polkit_authorization_constraint_from_string (optarg);
+                                if (c == NULL) {
+                                        fprintf (stderr, "polkit-auth: constraint '%s' not recognized\n", optarg);
+                                        goto out;
+                                }
+
+                                if (num_constraints >= MAX_CONSTRAINTS - 1) {
+                                        fprintf (stderr, "polkit-auth: Too many constraints specified\n");
+                                        goto out;
+                                }
+                                constraints[num_constraints++] = c;
+
 			} else if (strcmp (opt, "revoke") == 0) {
 				opt_revoke_action_id = strdup (optarg);
 			} else if (strcmp (opt, "show-obtainable") == 0) {
@@ -824,7 +837,6 @@ main (int argc, char *argv[])
                    opt_block_action_id != NULL) {
                 PolKitAction *pk_action;
                 PolKitError *pk_error;
-                PolKitAuthorizationConstraint *constraint;
                 polkit_bool_t res;
 
                 if (opt_user == NULL && uid == 0) {
@@ -838,28 +850,20 @@ main (int argc, char *argv[])
                 else
                         polkit_action_set_action_id (pk_action, opt_grant_action_id);
 
-                if (opt_constraint != NULL) {
-                        constraint = polkit_authorization_constraint_from_string (opt_constraint);
-                        if (constraint == NULL) {
-                                fprintf (stderr, "polkit-auth: constraint '%s' not recognized\n", opt_constraint);
-                                goto out;
-                        }
-                } else {
-                        constraint = polkit_authorization_constraint_get_null ();
-                }
+                constraints[num_constraints] = NULL;
 
                 pk_error = NULL;
                 if (opt_block_action_id != NULL) {
                         res = polkit_authorization_db_grant_negative_to_uid (pk_authdb,
                                                                              pk_action,
                                                                              uid,
-                                                                             constraint,
+                                                                             constraints,
                                                                              &pk_error);
                 } else {
                         res = polkit_authorization_db_grant_to_uid (pk_authdb,
                                                                     pk_action,
                                                                     uid,
-                                                                    constraint,
+                                                                    constraints,
                                                                     &pk_error);
                 }
 


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