Copyright (C) Remus Koos 2001
Copyright (C) Luke Howard 2003
Copyright (C) Jim McDonough (jmcd@us.ibm.com) 2003
- Copyright (C) Guenther Deschner 2003
+ Copyright (C) Guenther Deschner 2003,2007
Copyright (C) Rakesh Patel 2004
Copyright (C) Dan Perry 2004
Copyright (C) Jeremy Allison 2004
#define MAX_KEYTAB_NAME_LEN 1100
#endif
+/**********************************************************************
+ * Open a krb5 keytab with flags, handles readonly or readwrite access and
+ * allows to process non-default keytab names.
+ * @param context krb5_context
+ * @param keytab_name_req string
+ * @param write_access BOOL if writable keytab is required
+ * @param krb5_keytab pointer to krb5_keytab (close with krb5_kt_close())
+ * @return krb5_error_code
+**********************************************************************/
+
+ krb5_error_code smb_krb5_open_keytab(krb5_context context,
+ const char *keytab_name_req,
+ BOOL write_access,
+ krb5_keytab *keytab)
+{
+ krb5_error_code ret = 0;
+ TALLOC_CTX *mem_ctx;
+ char keytab_string[MAX_KEYTAB_NAME_LEN];
+ BOOL found_valid_name = False;
+ const char *pragma = "FILE";
+ const char *tmp = NULL;
+
+ if (!write_access && !keytab_name_req) {
+ /* caller just wants to read the default keytab readonly, so be it */
+ return krb5_kt_default(context, keytab);
+ }
+
+ mem_ctx = talloc_init("smb_krb5_open_keytab");
+ if (!mem_ctx) {
+ return ENOMEM;
+ }
+
+#ifdef HAVE_WRFILE_KEYTAB
+ if (write_access) {
+ pragma = "WRFILE";
+ }
+#endif
+
+ if (keytab_name_req) {
+
+ if (strlen(keytab_name_req) > MAX_KEYTAB_NAME_LEN) {
+ ret = KRB5_CONFIG_NOTENUFSPACE;
+ goto out;
+ }
+
+ if ((strncmp(keytab_name_req, "WRFILE:/", 8) == 0) ||
+ (strncmp(keytab_name_req, "FILE:/", 6) == 0)) {
+ tmp = keytab_name_req;
+ goto resolve;
+ }
+
+ if (keytab_name_req[0] != '/') {
+ ret = KRB5_KT_BADNAME;
+ goto out;
+ }
+
+ tmp = talloc_asprintf(mem_ctx, "%s:%s", pragma, keytab_name_req);
+ if (!tmp) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ goto resolve;
+ }
+
+ /* we need to handle more complex keytab_strings, like:
+ * "ANY:FILE:/etc/krb5.keytab,krb4:/etc/srvtab" */
+
+ ret = krb5_kt_default_name(context, &keytab_string[0], MAX_KEYTAB_NAME_LEN - 2);
+ if (ret) {
+ goto out;
+ }
+
+ DEBUG(10,("smb_krb5_open_keytab: krb5_kt_default_name returned %s\n", keytab_string));
+
+ tmp = talloc_strdup(mem_ctx, keytab_string);
+ if (!tmp) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ if (strncmp(tmp, "ANY:", 4) == 0) {
+ tmp += 4;
+ }
+
+ memset(&keytab_string, '\0', sizeof(keytab_string));
+
+ while (next_token(&tmp, keytab_string, ",", sizeof(keytab_string))) {
+
+ if (strncmp(keytab_string, "WRFILE:", 7) == 0) {
+ found_valid_name = True;
+ tmp = keytab_string;
+ tmp += 7;
+ }
+
+ if (strncmp(keytab_string, "FILE:", 5) == 0) {
+ found_valid_name = True;
+ tmp = keytab_string;
+ tmp += 5;
+ }
+
+ if (found_valid_name) {
+
+ if (tmp[0] != '/') {
+ ret = KRB5_KT_BADNAME;
+ goto out;
+ }
+
+ tmp = talloc_asprintf(mem_ctx, "%s:%s", pragma, tmp);
+ if (!tmp) {
+ ret = ENOMEM;
+ goto out;
+ }
+ break;
+ }
+ }
+
+ if (!found_valid_name) {
+ ret = KRB5_KT_UNKNOWN_TYPE;
+ goto out;
+ }
+
+ resolve:
+ DEBUG(10,("smb_krb5_open_keytab: resolving: %s\n", tmp));
+ ret = krb5_kt_resolve(context, tmp, keytab);
+
+ out:
+ TALLOC_FREE(mem_ctx);
+ return ret;
+}
/**********************************************************************
**********************************************************************/
char *princ_s = NULL, *short_princ_s = NULL;
char *password_s = NULL;
char *my_fqdn;
- char keytab_name[MAX_KEYTAB_NAME_LEN];
TALLOC_CTX *ctx = NULL;
char *machine_name;
DEBUG(1,("ads_keytab_add_entry: could not krb5_init_context: %s\n",error_message(ret)));
return -1;
}
-
-#ifdef HAVE_WRFILE_KEYTAB /* MIT */
- keytab_name[0] = 'W';
- keytab_name[1] = 'R';
- ret = krb5_kt_default_name(context, (char *) &keytab_name[2], MAX_KEYTAB_NAME_LEN - 4);
-#else /* Heimdal */
- ret = krb5_kt_default_name(context, (char *) &keytab_name[0], MAX_KEYTAB_NAME_LEN - 2);
-#endif
- if (ret) {
- DEBUG(1,("ads_keytab_add_entry: krb5_kt_default_name failed (%s)\n", error_message(ret)));
- goto out;
- }
- DEBUG(2,("ads_keytab_add_entry: Using default system keytab: %s\n", (char *) &keytab_name));
- ret = krb5_kt_resolve(context, (char *) &keytab_name, &keytab);
+
+ ret = smb_krb5_open_keytab(context, NULL, True, &keytab);
if (ret) {
- DEBUG(1,("ads_keytab_add_entry: krb5_kt_resolve failed (%s)\n", error_message(ret)));
+ DEBUG(1,("ads_keytab_add_entry: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
goto out;
}
krb5_kt_cursor cursor;
krb5_keytab_entry kt_entry;
krb5_kvno kvno;
- char keytab_name[MAX_KEYTAB_NAME_LEN];
ZERO_STRUCT(kt_entry);
ZERO_STRUCT(cursor);
DEBUG(1,("ads_keytab_flush: could not krb5_init_context: %s\n",error_message(ret)));
return ret;
}
-#ifdef HAVE_WRFILE_KEYTAB
- keytab_name[0] = 'W';
- keytab_name[1] = 'R';
- ret = krb5_kt_default_name(context, (char *) &keytab_name[2], MAX_KEYTAB_NAME_LEN - 4);
-#else
- ret = krb5_kt_default_name(context, (char *) &keytab_name[0], MAX_KEYTAB_NAME_LEN - 2);
-#endif
- if (ret) {
- DEBUG(1,("ads_keytab_flush: krb5_kt_default failed (%s)\n", error_message(ret)));
- goto out;
- }
- DEBUG(3,("ads_keytab_flush: Using default keytab: %s\n", (char *) &keytab_name));
- ret = krb5_kt_resolve(context, (char *) &keytab_name, &keytab);
+
+ ret = smb_krb5_open_keytab(context, NULL, True, &keytab);
if (ret) {
- DEBUG(1,("ads_keytab_flush: krb5_kt_resolve failed (%s)\n", error_message(ret)));
+ DEBUG(1,("ads_keytab_flush: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
goto out;
}
krb5_keytab keytab = NULL;
krb5_kt_cursor cursor;
krb5_keytab_entry kt_entry;
- char keytab_name[MAX_KEYTAB_NAME_LEN];
ZERO_STRUCT(kt_entry);
ZERO_STRUCT(cursor);
DEBUG(1,("ads_keytab_list: could not krb5_init_context: %s\n",error_message(ret)));
return ret;
}
-#if 0 /* HAVE_WRFILE_KEYTAB */
- keytab_name[0] = 'W';
- keytab_name[1] = 'R';
- ret = krb5_kt_default_name(context, (char *) &keytab_name[2], MAX_KEYTAB_NAME_LEN - 4);
-#else
- ret = krb5_kt_default_name(context, (char *) &keytab_name[0], MAX_KEYTAB_NAME_LEN - 2);
-#endif
- if (ret) {
- DEBUG(1,("ads_keytab_list: krb5_kt_default failed (%s)\n", error_message(ret)));
- goto out;
- }
- DEBUG(3,("ads_keytab_list: Using default keytab: %s\n", (char *) &keytab_name));
- ret = krb5_kt_resolve(context, (char *) &keytab_name, &keytab);
+
+ ret = smb_krb5_open_keytab(context, NULL, False, &keytab);
if (ret) {
- DEBUG(1,("ads_keytab_list: krb5_kt_resolve failed (%s)\n", error_message(ret)));
+ DEBUG(1,("ads_keytab_list: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
goto out;
}
git.samba.org / ira / wip.git / blobdiff