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From cc3ef52884a48863a81acbfc741735fe09cd85f7 Mon Sep 17 00:00:00 2001
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From: Sumit Bose <sbose@redhat.com>
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Date: Thu, 13 Jun 2019 18:27:49 +0200
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Subject: [PATCH 4/4] adenroll: use only enctypes permitted by Kerberos config
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Realted to https://gitlab.freedesktop.org/realmd/adcli/issues/3
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---
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doc/adcli.xml | 10 ++++++++++
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library/adenroll.c | 22 +++++++++++++++++++---
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2 files changed, 29 insertions(+), 3 deletions(-)
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diff --git a/doc/adcli.xml b/doc/adcli.xml
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index 9605b4a..094f577 100644
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--- a/doc/adcli.xml
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+++ b/doc/adcli.xml
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@@ -342,6 +342,11 @@ Password for Administrator:
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</varlistentry>
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</variablelist>
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+ <para>If supported on the AD side the
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+ <option>msDS-supportedEncryptionTypes</option> attribute will be set as
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+ well. Either the current value or the default list of AD's supported
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+ encryption types filtered by the permitted encryption types of the
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+ client's Kerberos configuration are written.</para>
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</refsect1>
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<refsect1 id='updating'>
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@@ -475,6 +480,11 @@ $ adcli update --login-ccache=/tmp/krbcc_123
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</varlistentry>
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</variablelist>
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+ <para>If supported on the AD side the
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+ <option>msDS-supportedEncryptionTypes</option> attribute will be set as
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+ well. Either the current value or the default list of AD's supported
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+ encryption types filtered by the permitted encryption types of the
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+ client's Kerberos configuration are written.</para>
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</refsect1>
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<refsect1 id='testjoin'>
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diff --git a/library/adenroll.c b/library/adenroll.c
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index 95c07cd..53cd812 100644
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--- a/library/adenroll.c
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+++ b/library/adenroll.c
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@@ -639,6 +639,7 @@ calculate_enctypes (adcli_enroll *enroll, char **enctype)
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{
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char *value = NULL;
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krb5_enctype *read_enctypes;
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+ krb5_enctype *new_enctypes;
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char *new_value = NULL;
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int is_2008_or_later;
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LDAP *ldap;
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@@ -685,7 +686,14 @@ calculate_enctypes (adcli_enroll *enroll, char **enctype)
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value = _adcli_krb5_format_enctypes (v51_earlier_enctypes);
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}
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- new_value = _adcli_krb5_format_enctypes (adcli_enroll_get_keytab_enctypes (enroll));
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+ new_enctypes = adcli_enroll_get_permitted_keytab_enctypes (enroll);
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+ if (new_enctypes == NULL) {
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+ _adcli_warn ("No permitted encryption type found.");
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+ return ADCLI_ERR_UNEXPECTED;
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+ }
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+
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+ new_value = _adcli_krb5_format_enctypes (new_enctypes);
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+ krb5_free_enctypes (adcli_conn_get_krb5_context (enroll->conn), new_enctypes);
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if (new_value == NULL) {
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free (value);
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_adcli_warn ("The encryption types desired are not available in active directory");
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@@ -1758,7 +1766,11 @@ add_principal_to_keytab (adcli_enroll *enroll,
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enroll->keytab_name);
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}
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- enctypes = adcli_enroll_get_keytab_enctypes (enroll);
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+ enctypes = adcli_enroll_get_permitted_keytab_enctypes (enroll);
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+ if (enctypes == NULL) {
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+ _adcli_warn ("No permitted encryption type found.");
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+ return ADCLI_ERR_UNEXPECTED;
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+ }
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if (flags & ADCLI_ENROLL_PASSWORD_VALID) {
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code = _adcli_krb5_keytab_copy_entries (k5, enroll->keytab, principal,
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@@ -1774,7 +1786,10 @@ add_principal_to_keytab (adcli_enroll *enroll,
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*/
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salts = build_principal_salts (enroll, k5, principal);
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- return_unexpected_if_fail (salts != NULL);
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+ if (salts == NULL) {
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+ krb5_free_enctypes (k5, enctypes);
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+ return ADCLI_ERR_UNEXPECTED;
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+ }
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if (*which_salt < 0) {
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code = _adcli_krb5_keytab_discover_salt (k5, principal, enroll->kvno, &password,
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@@ -1794,6 +1809,7 @@ add_principal_to_keytab (adcli_enroll *enroll,
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free_principal_salts (k5, salts);
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}
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+ krb5_free_enctypes (k5, enctypes);
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if (code != 0) {
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_adcli_err ("Couldn't add keytab entries: %s: %s",
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--
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2.21.0
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