Add support to request canonicalization on krb AS requests

https://fedorahosted.org/sssd/ticket/957

3 files changed, 25 insertions, 1 deletions

diff --git a/src/providers/krb5/krb5_child.c b/src/providers/krb5/krb5_child.c
index ec2251e43..fe8721094 100644
--- a/src/providers/krb5/krb5_child.c
+++ b/src/providers/krb5/krb5_child.c
@@ -586,6 +586,18 @@ done:
 
 }
 
+static void krb5_set_canonicalize(krb5_get_init_creds_opt *opts)
+{
+    int canonicalize = 0;
+    char *tmp_str;
+
+    tmp_str = getenv(SSSD_KRB5_CANONICALIZE);
+    if (tmp_str != NULL && strcasecmp(tmp_str, "true") == 0) {
+        canonicalize = 1;
+    }
+    sss_krb5_get_init_creds_opt_set_canonicalize(opts, canonicalize);
+}
+
 static krb5_error_code get_and_save_tgt_with_keytab(krb5_context ctx,
                                                     krb5_principal princ,
                                                     krb5_keytab keytab,
@@ -601,6 +613,7 @@ static krb5_error_code get_and_save_tgt_with_keytab(krb5_context ctx,
     krb5_get_init_creds_opt_set_address_list(&options, NULL);
     krb5_get_init_creds_opt_set_forwardable(&options, 0);
     krb5_get_init_creds_opt_set_proxiable(&options, 0);
+    krb5_set_canonicalize(&options);
 
     kerr = krb5_get_init_creds_keytab(ctx, &creds, princ, keytab, 0, NULL,
                                       &options);
@@ -1444,6 +1457,8 @@ static int krb5_child_setup(struct krb5_req *kr, uint32_t offline)
     }
 
     if (!offline) {
+        krb5_set_canonicalize(kr->options);
+
         use_fast_str = getenv(SSSD_KRB5_USE_FAST);
         if (use_fast_str == NULL || strcasecmp(use_fast_str, "never") == 0) {
             DEBUG(9, ("Not using FAST.\n"));
diff --git a/src/providers/krb5/krb5_common.c b/src/providers/krb5/krb5_common.c
index 4e792861b..4675e0a1f 100644
--- a/src/providers/krb5/krb5_common.c
+++ b/src/providers/krb5/krb5_common.c
@@ -45,7 +45,8 @@ struct dp_option default_krb5_opts[] = {
     { "krb5_lifetime", DP_OPT_STRING, NULL_STRING, NULL_STRING },
     { "krb5_renew_interval", DP_OPT_NUMBER, NULL_NUMBER, NULL_NUMBER },
     { "krb5_use_fast", DP_OPT_STRING, NULL_STRING, NULL_STRING },
-    { "krb5_fast_principal", DP_OPT_STRING, NULL_STRING, NULL_STRING }
+    { "krb5_fast_principal", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+    { "krb5_canonicalize", DP_OPT_BOOL, BOOL_FALSE, BOOL_FALSE }
 };
 
 errno_t check_and_export_lifetime(struct dp_option *opts, const int opt_id,
@@ -169,6 +170,12 @@ errno_t check_and_export_options(struct dp_option *opts,
         }
     }
 
+    if (dp_opt_get_bool(opts, KRB5_CANONICALIZE)) {
+        setenv(SSSD_KRB5_CANONICALIZE, "true", 1);
+    } else {
+        setenv(SSSD_KRB5_CANONICALIZE, "false", 1);
+    }
+
     dummy = dp_opt_get_cstring(opts, KRB5_KDC);
     if (dummy == NULL) {
         DEBUG(1, ("No KDC explicitly configured, using defaults.\n"));
diff --git a/src/providers/krb5/krb5_common.h b/src/providers/krb5/krb5_common.h
index 670fd1a51..950505f12 100644
--- a/src/providers/krb5/krb5_common.h
+++ b/src/providers/krb5/krb5_common.h
@@ -39,6 +39,7 @@
 #define SSSD_KRB5_LIFETIME "SSSD_KRB5_LIFETIME"
 #define SSSD_KRB5_USE_FAST "SSSD_KRB5_USE_FAST"
 #define SSSD_KRB5_FAST_PRINCIPAL "SSSD_KRB5_FAST_PRINCIPAL"
+#define SSSD_KRB5_CANONICALIZE "SSSD_KRB5_CANONICALIZE"
 
 #define KDCINFO_TMPL PUBCONF_PATH"/kdcinfo.%s"
 #define KPASSWDINFO_TMPL PUBCONF_PATH"/kpasswdinfo.%s"
@@ -61,6 +62,7 @@ enum krb5_opts {
     KRB5_RENEW_INTERVAL,
     KRB5_USE_FAST,
     KRB5_FAST_PRINCIPAL,
+    KRB5_CANONICALIZE,
 
     KRB5_OPTS
 };