dovecot-1.2: auth: Added support for EXTERNAL SASL mechanism.

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-1.2/rev/e3fe9b4a6a2d
changeset: 9079:e3fe9b4a6a2d
user:      Timo Sirainen <tss at iki.fi>
date:      Mon May 25 20:35:00 2009 -0400
description:
auth: Added support for EXTERNAL SASL mechanism.

diffstat:

2 files changed, 53 insertions(+)
src/auth/Makefile.am     |    1 
src/auth/mech-external.c |   52 ++++++++++++++++++++++++++++++++++++++++++++++

diffs (67 lines):

diff -r 76d455a7f4da -r e3fe9b4a6a2d src/auth/Makefile.am
--- a/src/auth/Makefile.am	Mon May 25 20:33:42 2009 -0400
+++ b/src/auth/Makefile.am	Mon May 25 20:35:00 2009 -0400
@@ -69,6 +69,7 @@ dovecot_auth_SOURCES = \
 	mech-login.c \
 	mech-cram-md5.c \
 	mech-digest-md5.c \
+	mech-external.c \
 	mech-gssapi.c \
 	mech-ntlm.c \
 	mech-otp.c \
diff -r 76d455a7f4da -r e3fe9b4a6a2d src/auth/mech-external.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/auth/mech-external.c	Mon May 25 20:35:00 2009 -0400
@@ -0,0 +1,52 @@
+/* Copyright (c) 2009 Dovecot authors, see the included COPYING file */
+
+#include "common.h"
+#include "mech.h"
+#include "passdb.h"
+#include "plain-common.h"
+
+static void
+mech_external_auth_continue(struct auth_request *request,
+			    const unsigned char *data, size_t data_size)
+{
+	const char *authzid, *error;
+
+	authzid = t_strndup(data, data_size);
+	if (request->user == NULL) {
+		auth_request_log_info(request, "external",
+				      "username not known");
+		auth_request_fail(request);
+        } else if (*authzid != '\0' &&
+		   !auth_request_set_login_username(request, authzid, &error)) {
+		/* invalid login username */
+		auth_request_log_info(request, "plain",
+				      "login user: %s", error);
+		auth_request_fail(request);
+	} else {
+                auth_request_verify_plain(request, "",
+                                          plain_verify_callback);
+	}
+}
+
+static struct auth_request *mech_external_auth_new(void)
+{
+        struct auth_request *request;
+	pool_t pool;
+
+	pool = pool_alloconly_create("external_auth_request", 2048);
+	request = p_new(pool, struct auth_request, 1);
+	request->pool = pool;
+	return request;
+}
+
+const struct mech_module mech_external = {
+	"EXTERNAL",
+
+	MEMBER(flags) 0,
+	MEMBER(passdb_need) MECH_PASSDB_NEED_VERIFY_PLAIN,
+
+	mech_external_auth_new,
+	mech_generic_auth_initial,
+	mech_external_auth_continue,
+	mech_generic_auth_free
+};