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-rw-r--r--source3/libads/kerberos_keytab.c13
-rw-r--r--source3/libads/kerberos_verify.c126
2 files changed, 77 insertions, 62 deletions
diff --git a/source3/libads/kerberos_keytab.c b/source3/libads/kerberos_keytab.c
index 5ece6e6ab2..90f5a376d6 100644
--- a/source3/libads/kerberos_keytab.c
+++ b/source3/libads/kerberos_keytab.c
@@ -425,6 +425,7 @@ int ads_keytab_create_default(ADS_STRUCT *ads)
krb5_keytab_entry kt_entry;
krb5_kvno kvno;
fstring my_fqdn, my_Fqdn, my_name, my_NAME;
+ char *p_fqdn;
int i, found = 0;
char **oldEntries = NULL, *princ_s[18];;
@@ -441,14 +442,20 @@ int ads_keytab_create_default(ADS_STRUCT *ads)
fstrcpy(my_name, global_myname());
strlower_m(my_name);
+
fstrcpy(my_NAME, global_myname());
strupper_m(my_NAME);
- name_to_fqdn(my_Fqdn, global_myname());
- strlower_m(my_Fqdn);
- memcpy(my_Fqdn, my_NAME, strlen(my_NAME));
+
+ my_fqdn[0] = '\0';
name_to_fqdn(my_fqdn, global_myname());
strlower_m(my_fqdn);
+ p_fqdn = strchr_m(my_fqdn, '.');
+ fstrcpy(my_Fqdn, my_NAME);
+ if (p_fqdn) {
+ fstrcat(my_Fqdn, p_fqdn);
+ }
+
asprintf(&princ_s[0], "%s$@%s", my_name, lp_realm());
asprintf(&princ_s[1], "%s$@%s", my_NAME, lp_realm());
asprintf(&princ_s[2], "host/%s@%s", my_name, lp_realm());
diff --git a/source3/libads/kerberos_verify.c b/source3/libads/kerberos_verify.c
index 961b92ccc6..140d7550ad 100644
--- a/source3/libads/kerberos_verify.c
+++ b/source3/libads/kerberos_verify.c
@@ -41,14 +41,13 @@ static BOOL ads_keytab_verify_ticket(krb5_context context, krb5_auth_context aut
{
krb5_error_code ret = 0;
BOOL auth_ok = False;
-
krb5_keytab keytab = NULL;
- krb5_kt_cursor cursor;
- krb5_keytab_entry kt_entry;
- char *princ_name = NULL;
-
- ZERO_STRUCT(kt_entry);
- ZERO_STRUCT(cursor);
+ fstring my_fqdn, my_name;
+ fstring my_Fqdn, my_NAME;
+ char *p_fqdn;
+ char *host_princ_s[18];
+ krb5_principal host_princ;
+ int i;
ret = krb5_kt_default(context, &keytab);
if (ret) {
@@ -56,69 +55,78 @@ static BOOL ads_keytab_verify_ticket(krb5_context context, krb5_auth_context aut
goto out;
}
- ret = krb5_kt_start_seq_get(context, keytab, &cursor);
- if (ret) {
- DEBUG(1, ("ads_keytab_verify_ticket: krb5_kt_start_seq_get failed (%s)\n", error_message(ret)));
- goto out;
- }
-
- while (!krb5_kt_next_entry(context, keytab, &kt_entry, &cursor)) {
- ret = krb5_unparse_name(context, kt_entry.principal, &princ_name);
+ /* Generate the list of principal names which we expect clients might
+ * want to use for authenticating to the file service. */
+
+ fstrcpy(my_name, global_myname());
+ strlower_m(my_name);
+
+ fstrcpy(my_NAME, global_myname());
+ strupper_m(my_NAME);
+
+ my_fqdn[0] = '\0';
+ name_to_fqdn(my_fqdn, global_myname());
+ strlower_m(my_fqdn);
+
+ p_fqdn = strchr_m(my_fqdn, '.');
+ fstrcpy(my_Fqdn, my_NAME);
+ if (p_fqdn) {
+ fstrcat(my_Fqdn, p_fqdn);
+ }
+
+ asprintf(&host_princ_s[0], "%s$@%s", my_name, lp_realm());
+ asprintf(&host_princ_s[1], "%s$@%s", my_NAME, lp_realm());
+ asprintf(&host_princ_s[2], "host/%s@%s", my_name, lp_realm());
+ asprintf(&host_princ_s[3], "host/%s@%s", my_NAME, lp_realm());
+ asprintf(&host_princ_s[4], "host/%s@%s", my_fqdn, lp_realm());
+ asprintf(&host_princ_s[5], "host/%s@%s", my_Fqdn, lp_realm());
+ asprintf(&host_princ_s[6], "HOST/%s@%s", my_name, lp_realm());
+ asprintf(&host_princ_s[7], "HOST/%s@%s", my_NAME, lp_realm());
+ asprintf(&host_princ_s[8], "HOST/%s@%s", my_fqdn, lp_realm());
+ asprintf(&host_princ_s[9], "HOST/%s@%s", my_Fqdn, lp_realm());
+ asprintf(&host_princ_s[10], "cifs/%s@%s", my_name, lp_realm());
+ asprintf(&host_princ_s[11], "cifs/%s@%s", my_NAME, lp_realm());
+ asprintf(&host_princ_s[12], "cifs/%s@%s", my_fqdn, lp_realm());
+ asprintf(&host_princ_s[13], "cifs/%s@%s", my_Fqdn, lp_realm());
+ asprintf(&host_princ_s[14], "CIFS/%s@%s", my_name, lp_realm());
+ asprintf(&host_princ_s[15], "CIFS/%s@%s", my_NAME, lp_realm());
+ asprintf(&host_princ_s[16], "CIFS/%s@%s", my_fqdn, lp_realm());
+ asprintf(&host_princ_s[17], "CIFS/%s@%s", my_Fqdn, lp_realm());
+
+ /* Now try to verify the ticket using the key associated with each of
+ * the principals which we think clients will expect us to be
+ * participating as. */
+ for (i = 0; i < sizeof(host_princ_s) / sizeof(host_princ_s[0]); i++) {
+ host_princ = NULL;
+ ret = krb5_parse_name(context, host_princ_s[i], &host_princ);
if (ret) {
- DEBUG(1, ("ads_keytab_verify_ticket: krb5_unparse_name failed (%s)\n", error_message(ret)));
+ DEBUG(1, ("ads_keytab_verify_ticket: krb5_parse_name(%s) failed (%s)\n",
+ host_princ_s[i], error_message(ret)));
goto out;
}
- /* Look for a CIFS ticket */
- if (!StrnCaseCmp(princ_name, "cifs/", 5)) {
-#ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK
- krb5_auth_con_setuseruserkey(context, auth_context, &kt_entry.keyblock);
-#else
- krb5_auth_con_setuseruserkey(context, auth_context, &kt_entry.key);
-#endif
-
- p_packet->length = ticket->length;
- p_packet->data = (krb5_pointer)ticket->data;
-
- if (!(ret = krb5_rd_req(context, &auth_context, p_packet, NULL, NULL, NULL, pp_tkt))) {
- unsigned int keytype;
- krb5_free_unparsed_name(context, princ_name);
- princ_name = NULL;
-#ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK
- keytype = (unsigned int) kt_entry.keyblock.keytype;
-#else
- keytype = (unsigned int) kt_entry.key.enctype;
-#endif
- DEBUG(10,("ads_keytab_verify_ticket: enc type [%u] decrypted message !\n",
- keytype));
- auth_ok = True;
- break;
- }
- }
- krb5_free_unparsed_name(context, princ_name);
- princ_name = NULL;
+ p_packet->length = ticket->length;
+ p_packet->data = (krb5_pointer)ticket->data;
+ *pp_tkt = NULL;
+ ret = krb5_rd_req(context, &auth_context, p_packet, host_princ, keytab, NULL, pp_tkt);
+ krb5_free_principal(context, host_princ);
+ if (ret) {
+ DEBUG(0, ("krb5_rd_req(%s) failed: %s\n", host_princ_s[i], error_message(ret)));
+ } else {
+ DEBUG(10,("krb5_rd_req succeeded for principal %s\n", host_princ_s[i]));
+ auth_ok = True;
+ break;
+ }
}
- if (ret && ret != KRB5_KT_END) {
- /* This failed because something went wrong, not because the keytab file was empty. */
- DEBUG(1, ("ads_keytab_verify_ticket: krb5_kt_next_entry failed (%s)\n", error_message(ret)));
- goto out;
+
+ for (i = 0; i < sizeof(host_princ_s) / sizeof(host_princ_s[0]); i++) {
+ SAFE_FREE(host_princ_s[i]);
}
out:
- if (princ_name) {
- krb5_free_unparsed_name(context, princ_name);
- }
- {
- krb5_kt_cursor zero_csr;
- ZERO_STRUCT(zero_csr);
- if ((memcmp(&cursor, &zero_csr, sizeof(krb5_kt_cursor)) != 0) && keytab) {
- krb5_kt_end_seq_get(context, keytab, &cursor);
- }
- }
if (keytab) {
krb5_kt_close(context, keytab);
}
-
return auth_ok;
}
generated by cgit (git 2.34.1) at 2024-12-23 17:57:14 +0000