remove left over principal selection

https://fedorahosted.org/sssd/ticket/1303

Domain start up was taking too long when there are many principals
in a kerberos keytab. We were looking up in the keytab two times.

The first time we try to select a proper principal and remember it.
The second call happens almost right after the first one and
it is just a check if the principal exists in the keytab, without
any output information other than success/failure. It is
probably a left over from https://fedorahosted.org/sssd/ticket/781.

This patch removes the second call.

3 files changed, 0 insertions, 127 deletions

diff --git a/src/providers/ldap/sdap_child_helpers.c b/src/providers/ldap/sdap_child_helpers.c
index eeb5e5f03..7a59a42ea 100644
--- a/src/providers/ldap/sdap_child_helpers.c
+++ b/src/providers/ldap/sdap_child_helpers.c
@@ -453,7 +453,6 @@ static errno_t set_tgt_child_timeout(struct tevent_req *req,
 int setup_child(struct sdap_id_ctx *ctx)
 {
     int ret;
-    const char *mech;
     unsigned v;
     FILE *debug_filep;
     const char *realm;
@@ -463,26 +462,6 @@ int setup_child(struct sdap_id_ctx *ctx)
         realm = dp_opt_get_string(ctx->opts->basic, SDAP_KRB5_REALM);
     }
 
-    mech = dp_opt_get_string(ctx->opts->basic,
-                             SDAP_SASL_MECH);
-    if (!mech) {
-        return EOK;
-    }
-
-    if (mech && (strcasecmp(mech, "GSSAPI") == 0)) {
-        ret = sss_krb5_verify_keytab(dp_opt_get_string(ctx->opts->basic,
-                                                       SDAP_SASL_AUTHID),
-                                     realm,
-                                     dp_opt_get_string(ctx->opts->basic,
-                                                       SDAP_KRB5_KEYTAB));
-
-        if (ret != EOK) {
-            DEBUG(0, ("Could not verify keytab\n"));
-            return ret;
-        }
-
-    }
-
     if (debug_to_file != 0 && ldap_child_debug_fd == -1) {
         ret = open_debug_file_ex("ldap_child", &debug_filep);
         if (ret != EOK) {
diff --git a/src/util/sss_krb5.c b/src/util/sss_krb5.c
index 24229f8b3..cce8d9021 100644
--- a/src/util/sss_krb5.c
+++ b/src/util/sss_krb5.c
@@ -200,108 +200,6 @@ done:
     return ret;
 }
 
-
-int sss_krb5_verify_keytab(const char *principal,
-                           const char *realm_str,
-                           const char *keytab_name)
-{
-    krb5_context context = NULL;
-    krb5_keytab keytab = NULL;
-    krb5_error_code krberr;
-    int ret;
-    char *full_princ = NULL;
-    char *realm_name = NULL;
-    char *default_realm = NULL;
-    TALLOC_CTX *tmp_ctx;
-
-    tmp_ctx = talloc_new(NULL);
-    if (!tmp_ctx) {
-        return ENOMEM;
-    }
-
-    krberr = krb5_init_context(&context);
-    if (krberr) {
-        DEBUG(2, ("Failed to init kerberos context\n"));
-        ret = EFAULT;
-        goto done;
-    }
-
-    if (keytab_name) {
-        krberr = krb5_kt_resolve(context, keytab_name, &keytab);
-    } else {
-        krberr = krb5_kt_default(context, &keytab);
-    }
-
-    if (krberr) {
-        DEBUG(SSSDBG_FATAL_FAILURE,
-              ("Failed to read keytab file: %s\n",
-                KEYTAB_CLEAN_NAME,
-                sss_krb5_get_error_message(context, krberr)));
-        ret = EFAULT;
-        goto done;
-    }
-
-    if (!realm_str) {
-        krberr = krb5_get_default_realm(context, &default_realm);
-        if (krberr) {
-            DEBUG(2, ("Failed to get default realm name: %s\n",
-                      sss_krb5_get_error_message(context, krberr)));
-            ret = EFAULT;
-            goto done;
-        }
-
-        realm_name = talloc_strdup(tmp_ctx, default_realm);
-        krb5_free_default_realm(context, default_realm);
-        if (!realm_name) {
-            ret = ENOMEM;
-            goto done;
-        }
-    } else {
-        realm_name = talloc_strdup(tmp_ctx, realm_str);
-        if (!realm_name) {
-            ret = ENOMEM;
-            goto done;
-        }
-    }
-
-    if (principal) {
-        if (!strchr(principal, '@')) {
-            full_princ = talloc_asprintf(tmp_ctx, "%s@%s",
-                                         principal, realm_name);
-        } else {
-            full_princ = talloc_strdup(tmp_ctx, principal);
-        }
-    } else {
-        char hostname[512];
-
-        ret = gethostname(hostname, 511);
-        if (ret == -1) {
-            ret = errno;
-            goto done;
-        }
-        hostname[511] = '\0';
-
-        ret = select_principal_from_keytab(tmp_ctx, hostname, realm_name,
-                                           keytab_name, &full_princ, NULL, NULL);
-        if (ret) goto done;
-    }
-    if (!full_princ) {
-        ret = ENOMEM;
-        goto done;
-    }
-    DEBUG(4, ("Principal name is: [%s]\n", full_princ));
-
-    ret = sss_krb5_verify_keytab_ex(full_princ, keytab_name, context, keytab);
-    if (ret) goto done;
-
-    ret = EOK;
-done:
-    if (keytab) krb5_kt_close(context, keytab);
-    if (context) krb5_free_context(context);
-    talloc_free(tmp_ctx);
-    return ret;
-}
-
 int sss_krb5_verify_keytab_ex(const char *principal, const char *keytab_name,
                               krb5_context context, krb5_keytab keytab)
 {
diff --git a/src/util/sss_krb5.h b/src/util/sss_krb5.h
index 22d2c96eb..15dd1e6a6 100644
--- a/src/util/sss_krb5.h
+++ b/src/util/sss_krb5.h
@@ -71,10 +71,6 @@ krb5_error_code check_for_valid_tgt(krb5_context context,
                                     krb5_ccache ccache, const char *realm,
                                     const char *client_princ_str, bool *result);
 
-int sss_krb5_verify_keytab(const char *principal,
-                           const char *realm_str,
-                           const char *keytab_name);
-
 int sss_krb5_verify_keytab_ex(const char *principal, const char *keytab_name,
                               krb5_context context, krb5_keytab keytab);