Add ldap_sasl_minssf option

https://fedorahosted.org/sssd/ticket/1075

8 files changed, 24 insertions, 1 deletions

diff --git a/src/config/SSSDConfig.py b/src/config/SSSDConfig.py
index d39949f94..84c9bdc52 100644
--- a/src/config/SSSDConfig.py
+++ b/src/config/SSSDConfig.py
@@ -146,6 +146,7 @@ option_strings = {
     'ldap_sasl_mech' : _('Specify the sasl mechanism to use'),
     'ldap_sasl_authid' : _('Specify the sasl authorization id to use'),
     'ldap_sasl_realm' : _('Specify the sasl authorization realm to use'),
+    'ldap_sasl_minssf' : _('Specify the minimal SSF for LDAP sasl authorization'),
     'ldap_krb5_keytab' : _('Kerberos service keytab'),
     'ldap_krb5_init_creds' : _('Use Kerberos auth for LDAP connection'),
     'ldap_referrals' : _('Follow LDAP referrals'),
diff --git a/src/config/etc/sssd.api.d/sssd-ipa.conf b/src/config/etc/sssd.api.d/sssd-ipa.conf
index bfa364eb4..bd10d7944 100644
--- a/src/config/etc/sssd.api.d/sssd-ipa.conf
+++ b/src/config/etc/sssd.api.d/sssd-ipa.conf
@@ -23,6 +23,7 @@ ldap_tls_cipher_suite = str, None, false
 ldap_tls_reqcert = str, None, false
 ldap_sasl_mech = str, None, false
 ldap_sasl_authid = str, None, false
+ldap_sasl_minssf = int, None, false
 krb5_kdcip = str, None, false
 krb5_server = str, None, false
 krb5_realm = str, None, false
diff --git a/src/config/etc/sssd.api.d/sssd-ldap.conf b/src/config/etc/sssd.api.d/sssd-ldap.conf
index f76ce19a1..dcd1586c1 100644
--- a/src/config/etc/sssd.api.d/sssd-ldap.conf
+++ b/src/config/etc/sssd.api.d/sssd-ldap.conf
@@ -31,6 +31,7 @@ ldap_deref = str, None, false
 ldap_page_size = int, None, false
 ldap_deref_threshold = int, None, false
 ldap_sasl_canonicalize = bool, None, false
+ldap_sasl_minssf = int, None, false
 
 [provider/ldap/id]
 ldap_search_timeout = int, None, false
diff --git a/src/providers/ipa/ipa_common.c b/src/providers/ipa/ipa_common.c
index 05299931c..de7c20d11 100644
--- a/src/providers/ipa/ipa_common.c
+++ b/src/providers/ipa/ipa_common.c
@@ -75,6 +75,7 @@ struct dp_option ipa_def_ldap_opts[] = {
     { "ldap_sasl_mech", DP_OPT_STRING, { "GSSAPI" } , NULL_STRING },
     { "ldap_sasl_authid", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "ldap_sasl_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+    { "ldap_sasl_minssf", DP_OPT_NUMBER, { .number = 56 }, NULL_NUMBER },
     { "ldap_krb5_keytab", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "ldap_krb5_init_creds", DP_OPT_BOOL, BOOL_TRUE, BOOL_TRUE },
     /* use the same parm name as the krb5 module so we set it only once */
diff --git a/src/providers/ipa/ipa_common.h b/src/providers/ipa/ipa_common.h
index d415d4d01..1ab1983f3 100644
--- a/src/providers/ipa/ipa_common.h
+++ b/src/providers/ipa/ipa_common.h
@@ -35,7 +35,7 @@ struct ipa_service {
 /* the following defines are used to keep track of the options in the ldap
  * module, so that if they change and ipa is not updated correspondingly
  * this will trigger a runtime abort error */
-#define IPA_OPTS_BASIC_TEST 53
+#define IPA_OPTS_BASIC_TEST 54
 
 /* the following define is used to keep track of the options in the krb5
  * module, so that if they change and ipa is not updated correspondingly
diff --git a/src/providers/ldap/ldap_common.c b/src/providers/ldap/ldap_common.c
index 6b4e1b95f..170720c3f 100644
--- a/src/providers/ldap/ldap_common.c
+++ b/src/providers/ldap/ldap_common.c
@@ -64,6 +64,7 @@ struct dp_option default_basic_opts[] = {
     { "ldap_sasl_mech", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "ldap_sasl_authid", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "ldap_sasl_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+    { "ldap_sasl_minssf", DP_OPT_NUMBER, { .number = -1 }, NULL_NUMBER },
     { "ldap_krb5_keytab", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "ldap_krb5_init_creds", DP_OPT_BOOL, BOOL_TRUE, BOOL_TRUE },
     /* use the same parm name as the krb5 module so we set it only once */
diff --git a/src/providers/ldap/sdap.h b/src/providers/ldap/sdap.h
index d25e87bdf..3ab726aad 100644
--- a/src/providers/ldap/sdap.h
+++ b/src/providers/ldap/sdap.h
@@ -179,6 +179,7 @@ enum sdap_basic_opt {
     SDAP_SASL_MECH,
     SDAP_SASL_AUTHID,
     SDAP_SASL_REALM,
+    SDAP_SASL_MINSSF,
     SDAP_KRB5_KEYTAB,
     SDAP_KRB5_KINIT,
     SDAP_KRB5_KDC,
diff --git a/src/providers/ldap/sdap_async_connection.c b/src/providers/ldap/sdap_async_connection.c
index 1f829f176..38f493036 100644
--- a/src/providers/ldap/sdap_async_connection.c
+++ b/src/providers/ldap/sdap_async_connection.c
@@ -150,6 +150,8 @@ static void sdap_sys_connect_done(struct tevent_req *subreq)
     struct sdap_rebind_proc_params *rebind_proc_params;
     int sd;
     bool sasl_nocanon;
+    const char *sasl_mech;
+    int sasl_minssf;
 
     ret = sss_ldap_init_recv(subreq, &state->sh->ldap, &sd);
     talloc_zfree(subreq);
@@ -269,6 +271,21 @@ static void sdap_sys_connect_done(struct tevent_req *subreq)
         goto fail;
     }
 
+    sasl_mech = dp_opt_get_string(state->opts->basic, SDAP_SASL_MECH);
+    if (sasl_mech != NULL) {
+        sasl_minssf = dp_opt_get_int(state->opts->basic, SDAP_SASL_MINSSF);
+        if (sasl_minssf >= 0) {
+            lret = ldap_set_option(state->sh->ldap, LDAP_OPT_X_SASL_SSF_MIN,
+                                   &sasl_minssf);
+            if (lret != LDAP_OPT_SUCCESS) {
+                DEBUG(SSSDBG_CRIT_FAILURE,
+                      ("Failed to set LDAP MIN SSF option to %d\n",
+                       sasl_minssf));
+                goto fail;
+            }
+        }
+    }
+
     /* if we do not use start_tls the connection is not really connected yet
      * just fake an async procedure and leave connection to the bind call */
     if (!state->use_start_tls) {