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-rw-r--r--src/lib-ldap/Makefile.am42
-rw-r--r--src/lib-ldap/Makefile.in890
-rw-r--r--src/lib-ldap/ldap-client.c74
-rw-r--r--src/lib-ldap/ldap-client.h102
-rw-r--r--src/lib-ldap/ldap-compare.c121
-rw-r--r--src/lib-ldap/ldap-connection-pool.c113
-rw-r--r--src/lib-ldap/ldap-connection-pool.h27
-rw-r--r--src/lib-ldap/ldap-connection.c714
-rw-r--r--src/lib-ldap/ldap-entry.c72
-rw-r--r--src/lib-ldap/ldap-iterator.c29
-rw-r--r--src/lib-ldap/ldap-private.h129
-rw-r--r--src/lib-ldap/ldap-search.c169
12 files changed, 2482 insertions, 0 deletions
diff --git a/src/lib-ldap/Makefile.am b/src/lib-ldap/Makefile.am
new file mode 100644
index 0000000..14f53a6
--- /dev/null
+++ b/src/lib-ldap/Makefile.am
@@ -0,0 +1,42 @@
+pkglib_LTLIBRARIES = libdovecot-ldap.la
+
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/lib \
+ -I$(top_srcdir)/src/lib-test \
+ -I$(top_srcdir)/src/lib-settings \
+ -I$(top_srcdir)/src/lib-master \
+ -I$(top_srcdir)/src/lib-ssl-iostream \
+ $(LDAP_CFLAGS)
+
+libdovecot_ldap_la_SOURCES = \
+ ldap-client.c \
+ ldap-connection.c \
+ ldap-connection-pool.c \
+ ldap-iterator.c \
+ ldap-search.c \
+ ldap-compare.c \
+ ldap-entry.c
+
+libdovecot_ldap_la_DEPENDENCIES = ../lib-dovecot/libdovecot.la
+libdovecot_ldap_la_LDFLAGS = -export-dynamic
+libdovecot_ldap_la_LIBADD = ../lib-dovecot/libdovecot.la $(LDAP_LIBS)
+
+headers = \
+ ldap-client.h
+
+noinst_HEADERS = \
+ ldap-connection-pool.h \
+ ldap-private.h
+
+pkginc_libdir=$(pkgincludedir)
+pkginc_lib_HEADERS = $(headers)
+
+test_libs = \
+ ../lib-test/libtest.la \
+ ../lib-ssl-iostream/libssl_iostream.la \
+ ../lib/liblib.la
+
+check-local:
+ for bin in $(test_programs); do \
+ if ! $(RUN_TEST) ./$$bin; then exit 1; fi; \
+ done
diff --git a/src/lib-ldap/Makefile.in b/src/lib-ldap/Makefile.in
new file mode 100644
index 0000000..f161de9
--- /dev/null
+++ b/src/lib-ldap/Makefile.in
@@ -0,0 +1,890 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+
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+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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diff --git a/src/lib-ldap/ldap-client.c b/src/lib-ldap/ldap-client.c
new file mode 100644
index 0000000..bbae910
--- /dev/null
+++ b/src/lib-ldap/ldap-client.c
@@ -0,0 +1,74 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "ldap-connection-pool.h"
+#include "ldap-private.h"
+
+/* Max number of ldap-connections that can be created. For now this is
+ unlimited since we're assuming our callers aren't calling us with many
+ different settings. */
+#define LDAP_CONN_POOL_MAX_CONNECTIONS UINT_MAX
+
+struct ldap_client {
+ struct ldap_connection_list *list;
+};
+
+static struct ldap_connection_pool *ldap_conn_pool = NULL;
+
+int ldap_client_init(const struct ldap_client_settings *set,
+ struct ldap_client **client_r, const char **error_r)
+{
+ struct ldap_client *client;
+
+ if (ldap_conn_pool == NULL)
+ ldap_conn_pool = ldap_connection_pool_init(LDAP_CONN_POOL_MAX_CONNECTIONS);
+
+ client = i_new(struct ldap_client, 1);
+ if (ldap_connection_pool_get(ldap_conn_pool, client, set,
+ &client->list, error_r) < 0) {
+ i_free(client);
+ return -1;
+ }
+ *client_r = client;
+ return 0;
+}
+
+void ldap_client_deinit(struct ldap_client **_client)
+{
+ struct ldap_client *client = *_client;
+
+ *_client = NULL;
+
+ ldap_connection_pool_unref(ldap_conn_pool, &client->list);
+ i_free(client);
+}
+
+void ldap_client_switch_ioloop(struct ldap_client *client)
+{
+ ldap_connection_switch_ioloop(client->list->conn);
+}
+
+#undef ldap_search_start
+void ldap_search_start(struct ldap_client *client,
+ const struct ldap_search_input *input,
+ ldap_result_callback_t *callback, void *context)
+{
+ /* FIXME: we could support multiple concurrent LDAP connections to
+ the same host. */
+ ldap_connection_search_start(client->list->conn, input, callback, context);
+}
+
+#undef ldap_compare_start
+void ldap_compare_start(struct ldap_client *client,
+ const struct ldap_compare_input *input,
+ ldap_result_callback_t *callback, void *context)
+{
+ ldap_connection_compare_start(client->list->conn, input, callback, context);
+}
+
+void ldap_clients_cleanup(void)
+{
+ if (ldap_conn_pool != NULL &&
+ !ldap_connection_pool_have_references(ldap_conn_pool))
+ ldap_connection_pool_deinit(&ldap_conn_pool);
+}
diff --git a/src/lib-ldap/ldap-client.h b/src/lib-ldap/ldap-client.h
new file mode 100644
index 0000000..1a231dd
--- /dev/null
+++ b/src/lib-ldap/ldap-client.h
@@ -0,0 +1,102 @@
+#ifndef LDAP_CLIENT_H
+#define LDAP_CLIENT_H
+
+enum ldap_scope {
+ LDAP_SEARCH_SCOPE_BASE = 0x0000,
+ LDAP_SEARCH_SCOPE_ONE = 0x0001,
+ LDAP_SEARCH_SCOPE_SUBTREE = 0x0002
+};
+
+struct ldap_client;
+struct ldap_result;
+struct ldap_search_iterator;
+struct ldap_entry;
+
+/* Called when the LDAP result has finished. The callback must verify first
+ if the result is valid or not by calling ldap_result_has_failed() or
+ ldap_result_get_error(). The result is freed automatically after this
+ callback finishes. */
+typedef void ldap_result_callback_t(struct ldap_result *result, void *context);
+
+struct ldap_client_settings {
+ /* NOTE: when adding here, remember to update
+ ldap_connection_have_settings() and ldap_connection_init() */
+ const char *uri;
+ const char *bind_dn;
+ const char *password;
+
+ const struct ssl_iostream_settings *ssl_set;
+
+ unsigned int timeout_secs;
+ unsigned int max_idle_time_secs;
+ unsigned int debug;
+ bool require_ssl;
+ bool start_tls;
+};
+
+struct ldap_search_input {
+ const char *base_dn;
+ const char *filter;
+ const char *const *attributes;
+ enum ldap_scope scope;
+
+ unsigned int size_limit;
+
+ unsigned int timeout_secs;
+};
+
+struct ldap_compare_input {
+ const char *dn;
+ const char *attr;
+ const char *value;
+
+ unsigned int timeout_secs;
+};
+
+/* Initialize LDAP. Returns 0 on success, or -1 and error_r if initialization
+ failed with the given settings. */
+int ldap_client_init(const struct ldap_client_settings *set,
+ struct ldap_client **client_r, const char **error_r);
+void ldap_client_deinit(struct ldap_client **client);
+void ldap_client_switch_ioloop(struct ldap_client *client);
+
+/* Deinitialize all pooled LDAP connections if there are no references left.
+ This allows freeing the memory at deinit, but still allows multiple
+ independent code parts to use lib-ldap and call this function. */
+void ldap_clients_cleanup(void);
+
+void ldap_search_start(struct ldap_client *client,
+ const struct ldap_search_input *input,
+ ldap_result_callback_t *callback,
+ void *context);
+#define ldap_search_start(client, input, callback, context) \
+ ldap_search_start(client, input - \
+ CALLBACK_TYPECHECK(callback, void (*)( \
+ struct ldap_result *, typeof(context))), \
+ (ldap_result_callback_t *)callback, context)
+
+/* Returns TRUE if the LDAP query failed and result must not be used further. */
+bool ldap_result_has_failed(struct ldap_result *result);
+/* Returns the error string if the query had failed, or NULL if it hasn't. */
+const char *ldap_result_get_error(struct ldap_result *result);
+
+struct ldap_search_iterator* ldap_search_iterator_init(struct ldap_result *result);
+const struct ldap_entry *ldap_search_iterator_next(struct ldap_search_iterator *iter);
+void ldap_search_iterator_deinit(struct ldap_search_iterator **iter);
+
+void ldap_compare_start(struct ldap_client *client,
+ const struct ldap_compare_input *input,
+ ldap_result_callback_t *callback, void *context);
+#define ldap_compare_start(client, input, callback, context) \
+ ldap_compare_start(client, input - \
+ CALLBACK_TYPECHECK(callback, void (*)( \
+ struct ldap_result *, typeof(context))), \
+ (ldap_result_callback_t *)callback, context)
+/* Returns TRUE if the comparison matched, FALSE if not. */
+bool ldap_compare_result(struct ldap_result *result);
+
+const char *ldap_entry_dn(const struct ldap_entry *entry);
+const char *const *ldap_entry_get_attributes(const struct ldap_entry *entry);
+const char *const *ldap_entry_get_attribute(const struct ldap_entry *entry, const char *attribute);
+
+#endif
diff --git a/src/lib-ldap/ldap-compare.c b/src/lib-ldap/ldap-compare.c
new file mode 100644
index 0000000..9b17373
--- /dev/null
+++ b/src/lib-ldap/ldap-compare.c
@@ -0,0 +1,121 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "ldap-private.h"
+
+static int
+ldap_compare_callback(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *req,
+ LDAPMessage *message, bool *finished_r)
+{
+ int msgtype = ldap_msgtype(message);
+ struct ldap_result res;
+ char *result_errmsg;
+ int ret, result_err;
+
+ if (msgtype != LDAP_RES_COMPARE) {
+ *finished_r = FALSE;
+ return 0;
+ }
+ *finished_r = TRUE;
+
+ ret = ldap_parse_result(conn->conn, message,
+ &result_err, NULL,
+ &result_errmsg, NULL, NULL, 0);
+ i_zero(&res);
+ res.openldap_ret = ret;
+ if (ret != LDAP_SUCCESS) {
+ res.error_string = t_strdup_printf(
+ "ldap_parse_result() failed to parse compare: %s",
+ ldap_err2string(ret));
+ } else if (result_err == LDAP_COMPARE_TRUE) {
+ res.compare_true = TRUE;
+ } else if (result_err == LDAP_COMPARE_FALSE) {
+ res.compare_true = FALSE;
+ } else {
+ const struct ldap_compare_input *input = &req->input.compare;
+ const char *error = result_errmsg != NULL ?
+ result_errmsg : ldap_err2string(result_err);
+ res.openldap_ret = result_err;
+ res.error_string = t_strdup_printf(
+ "ldap_compare_ext(dn=%s, attr=%s) failed: %s",
+ input->dn, input->attr, error);
+ }
+
+ req->result_callback(&res, req->result_callback_ctx);
+
+ if (result_errmsg != NULL)
+ ldap_memfree(result_errmsg);
+ return res.openldap_ret;
+}
+
+static int
+ldap_compare_send(struct ldap_connection *conn, struct ldap_op_queue_entry *req,
+ const char **error_r)
+{
+ const struct ldap_compare_input *input = &req->input.compare;
+ struct berval bv = {
+ .bv_len = strlen(input->value),
+ .bv_val = (void*)input->value
+ };
+
+ LDAPControl manageDSAIT = {
+ LDAP_CONTROL_MANAGEDSAIT, {0, 0}, 0
+ };
+
+ /* try to use ManageDSAIT if available */
+ LDAPControl *sctrls[] = {
+ &manageDSAIT,
+ NULL
+ };
+
+ int ret = ldap_compare_ext(conn->conn,
+ input->dn,
+ input->attr,
+ &bv,
+ sctrls,
+ NULL,
+ &(req->msgid));
+
+ if (ret != LDAP_SUCCESS) {
+ *error_r = t_strdup_printf(
+ "ldap_compare_ext(dn=%s, attr=%s) failed: %s",
+ input->dn, input->attr, ldap_err2string(ret));
+ }
+ return ret;
+}
+
+void ldap_connection_compare_start(struct ldap_connection *conn,
+ const struct ldap_compare_input *input,
+ ldap_result_callback_t *callback,
+ void *context)
+{
+ struct ldap_op_queue_entry *req;
+ pool_t pool = pool_alloconly_create(MEMPOOL_GROWING "ldap compare", 128);
+ req = p_new(pool, struct ldap_op_queue_entry, 1);
+ req->pool = pool;
+
+ req->internal_response_cb = ldap_compare_callback;
+
+ req->input.compare = *input;
+ req->result_callback = callback;
+ req->result_callback_ctx = context;
+
+ /* copy strings */
+ req->input.compare.dn = p_strdup(req->pool, input->dn);
+ req->input.compare.attr = p_strdup(req->pool, input->attr);
+ req->input.compare.value = p_strdup(req->pool, input->value);
+
+ req->send_request_cb = ldap_compare_send;
+ req->timeout_secs = input->timeout_secs;
+
+ ldap_connection_queue_request(conn, req);
+}
+
+bool ldap_compare_result(struct ldap_result *result)
+{
+ i_assert(result->openldap_ret == LDAP_SUCCESS);
+ i_assert(result->error_string == NULL);
+
+ return result->compare_true;
+}
diff --git a/src/lib-ldap/ldap-connection-pool.c b/src/lib-ldap/ldap-connection-pool.c
new file mode 100644
index 0000000..7635ce0
--- /dev/null
+++ b/src/lib-ldap/ldap-connection-pool.c
@@ -0,0 +1,113 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "llist.h"
+#include "ldap-private.h"
+#include "ldap-connection-pool.h"
+
+struct ldap_connection_pool {
+ struct ldap_connection_list *conn_list;
+ unsigned int conn_count;
+
+ unsigned int max_connections;
+};
+
+static void ldap_connection_list_remove(struct ldap_connection_pool *pool,
+ struct ldap_connection_list *list)
+{
+ DLLIST_REMOVE(&pool->conn_list, list);
+ pool->conn_count--;
+
+ ldap_connection_deinit(&list->conn);
+ i_free(list);
+}
+
+static void
+ldap_connection_pool_shrink_to(struct ldap_connection_pool *pool,
+ unsigned int max_count)
+{
+ struct ldap_connection_list *list, *next;
+
+ list = pool->conn_list;
+ for (; list != NULL && pool->conn_count > max_count; list = next) {
+ next = list->next;
+ if (list->refcount == 0)
+ ldap_connection_list_remove(pool, list);
+ }
+}
+
+struct ldap_connection_pool *
+ldap_connection_pool_init(unsigned int max_connections)
+{
+ struct ldap_connection_pool *pool;
+
+ pool = i_new(struct ldap_connection_pool, 1);
+ pool->max_connections = max_connections;
+ return pool;
+}
+
+void ldap_connection_pool_deinit(struct ldap_connection_pool **_pool)
+{
+ struct ldap_connection_pool *pool = *_pool;
+
+ *_pool = NULL;
+
+ ldap_connection_pool_shrink_to(pool, 0);
+ i_assert(pool->conn_list == NULL);
+ i_free(pool);
+}
+
+int ldap_connection_pool_get(struct ldap_connection_pool *pool,
+ struct ldap_client *client,
+ const struct ldap_client_settings *set,
+ struct ldap_connection_list **list_r,
+ const char **error_r)
+{
+ struct ldap_connection_list *list;
+ struct ldap_connection *conn;
+
+ for (list = pool->conn_list; list != NULL; list = list->next) {
+ if (ldap_connection_have_settings(list->conn, set)) {
+ list->refcount++;
+ *list_r = list;
+ return 0;
+ }
+ }
+ if (ldap_connection_init(client, set, &conn, error_r) < 0)
+ return -1;
+
+ list = i_new(struct ldap_connection_list, 1);
+ list->conn = conn;
+ list->refcount++;
+
+ DLLIST_PREPEND(&pool->conn_list, list);
+ pool->conn_count++;
+
+ ldap_connection_pool_shrink_to(pool, pool->max_connections);
+ *list_r = list;
+ return 0;
+}
+
+void ldap_connection_pool_unref(struct ldap_connection_pool *pool,
+ struct ldap_connection_list **_list)
+{
+ struct ldap_connection_list *list = *_list;
+
+ *_list = NULL;
+
+ i_assert(list->refcount > 0);
+
+ if (--list->refcount == 0)
+ ldap_connection_pool_shrink_to(pool, pool->max_connections);
+}
+
+bool ldap_connection_pool_have_references(struct ldap_connection_pool *pool)
+{
+ struct ldap_connection_list *list;
+
+ for (list = pool->conn_list; list != NULL; list = list->next) {
+ if (list->refcount > 0)
+ return TRUE;
+ }
+ return FALSE;
+}
diff --git a/src/lib-ldap/ldap-connection-pool.h b/src/lib-ldap/ldap-connection-pool.h
new file mode 100644
index 0000000..00cf165
--- /dev/null
+++ b/src/lib-ldap/ldap-connection-pool.h
@@ -0,0 +1,27 @@
+#ifndef LDAP_CONNECTION_POOL_H
+#define LDAP_CONNECTION_POOL_H
+
+struct ldap_client;
+struct ldap_client_settings;
+
+struct ldap_connection_list {
+ struct ldap_connection_list *prev, *next;
+ struct ldap_connection *conn;
+ int refcount;
+};
+
+struct ldap_connection_pool *
+ldap_connection_pool_init(unsigned int max_connections);
+void ldap_connection_pool_deinit(struct ldap_connection_pool **_pool);
+/* Returns TRUE if there are connections with refcount>0 */
+bool ldap_connection_pool_have_references(struct ldap_connection_pool *pool);
+
+int ldap_connection_pool_get(struct ldap_connection_pool *pool,
+ struct ldap_client *client,
+ const struct ldap_client_settings *set,
+ struct ldap_connection_list **list_r,
+ const char **error_r);
+void ldap_connection_pool_unref(struct ldap_connection_pool *pool,
+ struct ldap_connection_list **list);
+
+#endif
diff --git a/src/lib-ldap/ldap-connection.c b/src/lib-ldap/ldap-connection.c
new file mode 100644
index 0000000..95a91ea
--- /dev/null
+++ b/src/lib-ldap/ldap-connection.c
@@ -0,0 +1,714 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "aqueue.h"
+#include "ioloop.h"
+#include "ldap-private.h"
+
+static
+void ldap_connection_read_more(struct ldap_connection *conn);
+static
+int ldap_connect_next_message(struct ldap_connection *conn, struct ldap_op_queue_entry *req, bool *finished_r);
+static
+void ldap_connection_abort_request(struct ldap_op_queue_entry *req);
+static
+void ldap_connection_request_destroy(struct ldap_op_queue_entry **req);
+static
+int ldap_connection_connect(struct ldap_connection *conn);
+static
+void ldap_connection_send_next(struct ldap_connection *conn);
+
+void ldap_connection_deinit(struct ldap_connection **_conn)
+{
+ struct ldap_connection *conn = *_conn;
+
+ *_conn = NULL;
+
+ ldap_connection_kill(conn);
+
+ unsigned int n = aqueue_count(conn->request_queue);
+ for (unsigned int i = 0; i < n; i++) {
+ struct ldap_op_queue_entry *req =
+ array_idx_elem(&conn->request_array,
+ aqueue_idx(conn->request_queue, i));
+ timeout_remove(&req->to_abort);
+ }
+ pool_unref(&conn->pool);
+}
+
+static
+int ldap_connection_setup(struct ldap_connection *conn, const char **error_r)
+{
+ int ret, opt;
+
+ ret = ldap_initialize(&conn->conn, conn->set.uri);
+ if (ret != LDAP_SUCCESS) {
+ *error_r = t_strdup_printf("ldap_initialize(uri=%s) failed: %s",
+ conn->set.uri, ldap_err2string(ret));
+ return -1;
+ }
+
+ if (conn->ssl_set.verify_remote_cert) {
+ opt = LDAP_OPT_X_TLS_HARD;
+ } else {
+ opt = LDAP_OPT_X_TLS_ALLOW;
+ }
+
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS, &opt);
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_REQUIRE_CERT, &opt);
+#ifdef LDAP_OPT_X_TLS_PROTOCOL_MIN
+ /* refuse to connect to SSLv2 as it's completely insecure */
+ opt = LDAP_OPT_X_TLS_PROTOCOL_SSL3;
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_PROTOCOL_MIN, &opt);
+#endif
+ opt = conn->set.timeout_secs;
+ /* default timeout */
+ ldap_set_option(conn->conn, LDAP_OPT_TIMEOUT, &opt);
+ ldap_set_option(conn->conn, LDAP_OPT_NETWORK_TIMEOUT, &opt);
+ /* timelimit */
+ ldap_set_option(conn->conn, LDAP_OPT_TIMELIMIT, &opt);
+
+ if (conn->ssl_set.ca_file != NULL)
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_CACERTFILE, conn->ssl_set.ca_file);
+ if (conn->ssl_set.ca_dir != NULL)
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_CACERTDIR, conn->ssl_set.ca_dir);
+
+ if (conn->ssl_set.cert.cert != NULL)
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_CERTFILE, conn->ssl_set.cert.cert);
+ if (conn->ssl_set.cert.key != NULL)
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_KEYFILE, conn->ssl_set.cert.key);
+
+ opt = conn->set.debug;
+ ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &opt);
+
+ opt = LDAP_VERSION3;
+ ldap_set_option(conn->conn, LDAP_OPT_PROTOCOL_VERSION, &opt);
+
+ ldap_set_option(conn->conn, LDAP_OPT_REFERRALS, 0);
+
+#ifdef LDAP_OPT_X_TLS_NEWCTX
+ opt = 0;
+ ldap_set_option(conn->conn, LDAP_OPT_X_TLS_NEWCTX, &opt);
+#endif
+
+ return 0;
+}
+
+bool ldap_connection_have_settings(struct ldap_connection *conn,
+ const struct ldap_client_settings *set)
+{
+ const struct ldap_client_settings *conn_set = &conn->set;
+
+ if (strcmp(conn_set->uri, set->uri) != 0)
+ return FALSE;
+ if (null_strcmp(conn_set->bind_dn, set->bind_dn) != 0)
+ return FALSE;
+ if (null_strcmp(conn_set->password, set->password) != 0)
+ return FALSE;
+ if (conn_set->timeout_secs != set->timeout_secs ||
+ conn_set->max_idle_time_secs != set->max_idle_time_secs ||
+ conn_set->debug != set->debug ||
+ conn_set->require_ssl != set->require_ssl ||
+ conn_set->start_tls != set->start_tls)
+ return FALSE;
+
+ if (set->ssl_set == NULL || !set->start_tls)
+ return TRUE;
+
+ /* check SSL settings */
+ if (null_strcmp(conn->ssl_set.min_protocol, set->ssl_set->min_protocol) != 0)
+ return FALSE;
+ if (null_strcmp(conn->ssl_set.cipher_list, set->ssl_set->cipher_list) != 0)
+ return FALSE;
+ if (null_strcmp(conn->ssl_set.ca_file, set->ssl_set->ca_file) != 0)
+ return FALSE;
+ if (null_strcmp(conn->ssl_set.cert.cert, set->ssl_set->cert.cert) != 0)
+ return FALSE;
+ if (null_strcmp(conn->ssl_set.cert.key, set->ssl_set->cert.key) != 0)
+ return FALSE;
+ return TRUE;
+}
+
+int ldap_connection_init(struct ldap_client *client,
+ const struct ldap_client_settings *set,
+ struct ldap_connection **conn_r, const char **error_r)
+{
+ i_assert(set->uri != NULL);
+
+ if (set->require_ssl &&
+ !set->start_tls &&
+ strncmp("ldaps://",set->uri,8) != 0) {
+ *error_r = t_strdup_printf("ldap_connection_init(uri=%s) failed: %s", set->uri,
+ "uri does not start with ldaps and ssl required without start TLS");
+ return -1;
+ }
+
+ pool_t pool = pool_alloconly_create("ldap connection", 1024);
+ struct ldap_connection *conn = p_new(pool, struct ldap_connection, 1);
+ conn->pool = pool;
+
+ conn->client = client;
+ conn->set = *set;
+ /* deep copy relevant strings */
+ conn->set.uri = p_strdup(pool, set->uri);
+ conn->set.bind_dn = p_strdup(pool, set->bind_dn);
+ if (set->password != NULL) {
+ conn->set.password = p_strdup(pool, set->password);
+ ber_str2bv(conn->set.password, strlen(conn->set.password), 0, &conn->cred);
+ }
+ /* cannot use these */
+ conn->ssl_set.ca = NULL;
+ conn->ssl_set.cert.key_password = NULL;
+ conn->ssl_set.cert_username_field = NULL;
+ conn->ssl_set.crypto_device = NULL;
+
+ if (set->ssl_set != NULL) {
+ /* keep in sync with ldap_connection_have_settings() */
+ conn->set.ssl_set = &conn->ssl_set;
+ conn->ssl_set.min_protocol = p_strdup(pool, set->ssl_set->min_protocol);
+ conn->ssl_set.cipher_list = p_strdup(pool, set->ssl_set->cipher_list);
+ conn->ssl_set.ca_file = p_strdup(pool, set->ssl_set->ca_file);
+ conn->ssl_set.cert.cert = p_strdup(pool, set->ssl_set->cert.cert);
+ conn->ssl_set.cert.key = p_strdup(pool, set->ssl_set->cert.key);
+ }
+ i_assert(ldap_connection_have_settings(conn, set));
+
+ if (ldap_connection_setup(conn, error_r) < 0) {
+ ldap_connection_deinit(&conn);
+ return -1;
+ }
+
+ p_array_init(&conn->request_array, conn->pool, 10);
+ conn->request_queue = aqueue_init(&conn->request_array.arr);
+
+ *conn_r = conn;
+ return 0;
+}
+
+void ldap_connection_switch_ioloop(struct ldap_connection *conn)
+{
+ if (conn->io != NULL)
+ conn->io = io_loop_move_io(&conn->io);
+ if (conn->to_disconnect != NULL)
+ conn->to_disconnect = io_loop_move_timeout(&conn->to_disconnect);
+ if (conn->to_reconnect != NULL)
+ conn->to_reconnect = io_loop_move_timeout(&conn->to_reconnect);
+ unsigned int n = aqueue_count(conn->request_queue);
+
+ for (unsigned int i = 0; i < n; i++) {
+ struct ldap_op_queue_entry *req =
+ array_idx_elem(&conn->request_array,
+ aqueue_idx(conn->request_queue, i));
+ if (req->to_abort != NULL)
+ req->to_abort = io_loop_move_timeout(&req->to_abort);
+ }
+}
+
+static void
+ldap_connection_result_failure(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *req,
+ int ret, const char *error)
+{
+ struct ldap_result res;
+ i_zero(&res);
+ res.conn = conn;
+ res.openldap_ret = ret;
+ res.error_string = error;
+ if (req->result_callback != NULL)
+ req->result_callback(&res, req->result_callback_ctx);
+ else
+ i_error("%s", error);
+ ldap_connection_kill(conn);
+}
+
+static
+void ldap_connection_result_success(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *req)
+{
+ struct ldap_result res;
+ i_zero(&res);
+ res.conn = conn;
+ res.openldap_ret = LDAP_SUCCESS;
+ if (req->result_callback != NULL)
+ req->result_callback(&res, req->result_callback_ctx);
+}
+
+static struct ldap_op_queue_entry *
+ldap_connection_next_unsent_request(struct ldap_connection *conn,
+ unsigned int *index_r)
+{
+ struct ldap_op_queue_entry *last_req = NULL;
+ *index_r = 0;
+
+ for (unsigned int i = 0; i < aqueue_count(conn->request_queue); i++) {
+ struct ldap_op_queue_entry *req =
+ array_idx_elem(&conn->request_array,
+ aqueue_idx(conn->request_queue, i));
+ if (req->msgid > -1)
+ break;
+ *index_r = i;
+ last_req = req;
+ }
+ return last_req;
+}
+
+static
+void ldap_connection_send_next(struct ldap_connection *conn)
+{
+ unsigned int index;
+ struct ldap_op_queue_entry *req;
+
+ timeout_remove(&conn->to_reconnect);
+
+ if (conn->state == LDAP_STATE_DISCONNECT) {
+ if (ldap_connection_connect(conn) == -1)
+ conn->to_reconnect = timeout_add(1000, ldap_connection_send_next, conn);
+ return;
+ }
+
+ if (conn->state != LDAP_STATE_CONNECT) {
+ return;
+ }
+
+ if (conn->pending > 10) return; /* try again later */
+
+ req = ldap_connection_next_unsent_request(conn, &index);
+ /* nothing to actually send */
+ if (req == NULL) return;
+
+ i_assert(req->msgid == -1);
+
+ const char *error;
+ int ret;
+ if ((ret = req->send_request_cb(conn, req, &error)) != LDAP_SUCCESS) {
+ /* did not succeed */
+ struct ldap_result res;
+
+ i_zero(&res);
+ res.openldap_ret = ret;
+ res.error_string = error;
+ if (req->result_callback != NULL)
+ req->result_callback(&res, req->result_callback_ctx);
+
+ ldap_connection_request_destroy(&req);
+ aqueue_delete(conn->request_queue, index);
+ } else conn->pending++;
+}
+
+static
+void ldap_connection_request_destroy(struct ldap_op_queue_entry **_req)
+{
+ struct ldap_op_queue_entry *req = *_req;
+
+ *_req = NULL;
+
+ timeout_remove(&req->to_abort);
+ pool_unref(&req->pool);
+}
+
+void ldap_connection_queue_request(struct ldap_connection *conn, struct ldap_op_queue_entry *req)
+{
+ req->msgid = -1;
+ req->conn = conn;
+ aqueue_append(conn->request_queue, &req);
+ if (req->timeout_secs > 0)
+ req->to_abort = timeout_add(req->timeout_secs * 1000, ldap_connection_abort_request, req);
+
+ ldap_connection_send_next(conn);
+}
+
+static int
+ldap_connection_connect_parse(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *req,
+ LDAPMessage *message, bool *finished_r)
+{
+ int ret, result_err;
+ char *retoid, *result_errmsg;
+ int msgtype = ldap_msgtype(message);
+
+ *finished_r = TRUE;
+ ret = ldap_parse_result(conn->conn, message, &result_err, NULL,
+ &result_errmsg, NULL, NULL, 0);
+
+ switch(conn->state) {
+ case LDAP_STATE_TLS:
+ if (msgtype != LDAP_RES_EXTENDED) {
+ *finished_r = FALSE;
+ return LDAP_SUCCESS;
+ }
+ if (ret != 0) {
+ ldap_connection_result_failure(conn, req, ret, t_strdup_printf(
+ "ldap_start_tls(uri=%s) failed: %s",
+ conn->set.uri, ldap_err2string(ret)));
+ return ret;
+ } else if (result_err != 0) {
+ if (conn->set.require_ssl) {
+ ldap_connection_result_failure(conn, req, result_err, t_strdup_printf(
+ "ldap_start_tls(uri=%s) failed: %s",
+ conn->set.uri, result_errmsg));
+ ldap_memfree(result_errmsg);
+ return LDAP_INVALID_CREDENTIALS; /* make sure it disconnects */
+ }
+ } else {
+ ret = ldap_parse_extended_result(conn->conn, message, &retoid, NULL, 0);
+ /* retoid can be NULL even if ret == 0 */
+ if (ret == 0) {
+ ret = ldap_install_tls(conn->conn);
+ if (ret != 0) {
+ // if this fails we have to abort
+ ldap_connection_result_failure(conn, req, ret, t_strdup_printf(
+ "ldap_start_tls(uri=%s) failed: %s",
+ conn->set.uri, ldap_err2string(ret)));
+ return LDAP_INVALID_CREDENTIALS;
+ }
+ }
+ if (ret != LDAP_SUCCESS) {
+ if (conn->set.require_ssl) {
+ ldap_connection_result_failure(conn, req, ret, t_strdup_printf(
+ "ldap_start_tls(uri=%s) failed: %s",
+ conn->set.uri, ldap_err2string(ret)));
+ return LDAP_UNAVAILABLE;
+ }
+ } else {
+ if (conn->set.debug > 0)
+ i_debug("Using TLS connection to remote LDAP server");
+ }
+ ldap_memfree(retoid);
+ }
+ conn->state = LDAP_STATE_AUTH;
+ return ldap_connect_next_message(conn, req, finished_r);
+ case LDAP_STATE_AUTH:
+ if (ret != LDAP_SUCCESS) {
+ ldap_connection_result_failure(conn, req, ret, t_strdup_printf(
+ "ldap_parse_result() failed for connect: %s",
+ ldap_err2string(ret)));
+ return ret;
+ }
+ if (result_err != LDAP_SUCCESS) {
+ const char *error = result_errmsg != NULL ?
+ result_errmsg : ldap_err2string(result_err);
+ ldap_connection_result_failure(conn, req, result_err, t_strdup_printf(
+ "Connect failed: %s", error));
+ ldap_memfree(result_errmsg);
+ return result_err;
+ }
+ if (msgtype != LDAP_RES_BIND) return 0;
+ ret = ldap_parse_sasl_bind_result(conn->conn, message, &conn->scred, 0);
+ if (ret != LDAP_SUCCESS) {
+ const char *error = t_strdup_printf(
+ "Cannot bind with server: %s", ldap_err2string(ret));
+ ldap_connection_result_failure(conn, req, ret, error);
+ return 1;
+ }
+ conn->state = LDAP_STATE_CONNECT;
+ return ldap_connect_next_message(conn, req, finished_r);
+ default:
+ i_unreached();
+ }
+ i_unreached();
+}
+
+static
+void ldap_connection_abort_request(struct ldap_op_queue_entry *req)
+{
+ struct ldap_result res;
+
+ /* too bad */
+ timeout_remove(&req->to_abort);
+ if (req->msgid > -1)
+ ldap_abandon_ext(req->conn->conn, req->msgid, NULL, NULL);
+
+ i_zero(&res);
+ res.openldap_ret = LDAP_TIMEOUT;
+ res.error_string = "Aborting LDAP request after timeout";
+ if (req->result_callback != NULL)
+ req->result_callback(&res, req->result_callback_ctx);
+
+ unsigned int n = aqueue_count(req->conn->request_queue);
+ for (unsigned int i = 0; i < n; i++) {
+ struct ldap_op_queue_entry *arr_req =
+ array_idx_elem(&req->conn->request_array,
+ aqueue_idx(req->conn->request_queue, i));
+ if (req == arr_req) {
+ aqueue_delete(req->conn->request_queue, i);
+ ldap_connection_request_destroy(&req);
+ return;
+ }
+ }
+ i_unreached();
+}
+
+static
+void ldap_connection_abort_all_requests(struct ldap_connection *conn)
+{
+ struct ldap_result res;
+ i_zero(&res);
+ res.openldap_ret = LDAP_TIMEOUT;
+ res.error_string = "Aborting LDAP requests due to failure";
+
+ unsigned int n = aqueue_count(conn->request_queue);
+ for (unsigned int i = 0; i < n; i++) {
+ struct ldap_op_queue_entry **reqp =
+ array_idx_modifiable(&conn->request_array,
+ aqueue_idx(conn->request_queue, i));
+ timeout_remove(&(*reqp)->to_abort);
+ if ((*reqp)->result_callback != NULL)
+ (*reqp)->result_callback(&res, (*reqp)->result_callback_ctx);
+ ldap_connection_request_destroy(reqp);
+ }
+ aqueue_clear(conn->request_queue);
+}
+
+static int
+ldap_connect_next_message(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *req, bool *finished_r)
+{
+ int ret;
+
+ *finished_r = TRUE;
+
+ switch(conn->state) {
+ case LDAP_STATE_DISCONNECT:
+ /* if we should not disable SSL, and the URI is not ldaps:// */
+ if (!conn->set.start_tls || strstr(conn->set.uri, "ldaps://") == NULL) {
+ ret = ldap_start_tls(conn->conn, NULL, NULL, &req->msgid);
+ if (ret != LDAP_SUCCESS) {
+ ldap_connection_result_failure(conn, req, ret, t_strdup_printf(
+ "ldap_start_tls(uri=%s) failed: %s",
+ conn->set.uri, ldap_err2string(ret)));
+ return ret;
+ }
+ conn->state = LDAP_STATE_TLS;
+ break;
+ }
+ conn->state = LDAP_STATE_AUTH;
+ /* fall through */
+ case LDAP_STATE_AUTH:
+ ret = ldap_sasl_bind(conn->conn,
+ conn->set.bind_dn,
+ LDAP_SASL_SIMPLE,
+ &conn->cred,
+ NULL,
+ NULL,
+ &req->msgid);
+ if (ret != LDAP_SUCCESS) {
+ ldap_connection_result_failure(conn, req, ret, t_strdup_printf(
+ "ldap_sasl_bind(uri=%s, dn=%s) failed: %s",
+ conn->set.uri, conn->set.bind_dn, ldap_err2string(ret)));
+ return ret;
+ }
+ break;
+ case LDAP_STATE_CONNECT:
+ ldap_connection_result_success(conn, req);
+ return LDAP_SUCCESS; /* we are done here */
+ default:
+ i_unreached();
+ };
+
+ req->conn = conn;
+ *finished_r = FALSE;
+ return LDAP_SUCCESS;
+}
+
+static
+int ldap_connection_connect(struct ldap_connection *conn)
+{
+ const char *error;
+ int fd;
+ Sockbuf *sb;
+ bool finished;
+
+ if (conn->conn == NULL) {
+ /* try to reconnect after disconnection */
+ if (ldap_connection_setup(conn, &error) < 0)
+ i_error("%s", error);
+ }
+
+ pool_t pool = pool_alloconly_create(MEMPOOL_GROWING "ldap bind", 128);
+ struct ldap_op_queue_entry *req = p_new(pool, struct ldap_op_queue_entry, 1);
+ req->pool = pool;
+
+ req->internal_response_cb = ldap_connection_connect_parse;
+ req->timeout_secs = conn->set.timeout_secs;
+
+ if (ldap_connect_next_message(conn, req, &finished) != LDAP_SUCCESS ||
+ conn->conn == NULL) {
+ pool_unref(&pool);
+ return -1;
+ }
+ conn->pending++;
+ aqueue_append(conn->request_queue, &req);
+ /* start timeout */
+ if (req->timeout_secs > 0)
+ req->to_abort = timeout_add(req->timeout_secs * 1000, ldap_connection_abort_request, req);
+
+ ldap_get_option(conn->conn, LDAP_OPT_SOCKBUF, &sb);
+ ber_sockbuf_ctrl(sb, LBER_SB_OPT_GET_FD, &fd);
+ conn->io = io_add(fd, IO_READ, ldap_connection_read_more, conn);
+ if (conn->set.max_idle_time_secs > 0)
+ conn->to_disconnect = timeout_add(conn->set.max_idle_time_secs * 1000, ldap_connection_kill, conn);
+ return 0;
+}
+
+void ldap_connection_kill(struct ldap_connection *conn)
+{
+ io_remove_closed(&conn->io);
+ timeout_remove(&conn->to_disconnect);
+ timeout_remove(&conn->to_reconnect);
+ if (conn->request_queue != NULL) {
+ unsigned int n = aqueue_count(conn->request_queue);
+
+ for (unsigned int i = 0; i < n; i++) {
+ struct ldap_op_queue_entry *req =
+ array_idx_elem(&conn->request_array,
+ aqueue_idx(conn->request_queue, i));
+ if (req->msgid > -1)
+ ldap_abandon_ext(conn->conn, req->msgid, NULL, NULL);
+ req->msgid = -1;
+ }
+ }
+ if (conn->conn != NULL) {
+ ldap_unbind_ext(conn->conn, NULL, NULL);
+ ldap_memfree(conn->scred);
+ }
+ conn->conn = NULL;
+ conn->state = LDAP_STATE_DISCONNECT;
+}
+
+int ldap_connection_check(struct ldap_connection *conn)
+{
+ /* it's not connected */
+ if (conn->state == LDAP_STATE_DISCONNECT) return -1;
+ return 0;
+}
+
+static struct ldap_op_queue_entry *
+ldap_connection_find_req_by_msgid(struct ldap_connection *conn, int msgid,
+ unsigned int *idx_r)
+{
+ unsigned int i, n = aqueue_count(conn->request_queue);
+ for (i = 0; i < n; i++) {
+ struct ldap_op_queue_entry *req =
+ array_idx_elem(&conn->request_array,
+ aqueue_idx(conn->request_queue, i));
+ if (req->msgid == msgid) {
+ *idx_r = i;
+ return req;
+ }
+ }
+ return NULL;
+}
+
+static int
+ldap_connection_handle_message(struct ldap_connection *conn,
+ LDAPMessage *message)
+{
+ struct ldap_op_queue_entry *req;
+ unsigned int i = 0;
+ bool finished = FALSE;
+ int err = LDAP_SUCCESS;
+
+ /* we need to look at who it was for */
+ req = ldap_connection_find_req_by_msgid(conn, ldap_msgid(message), &i);
+ if (req != NULL)
+ err = req->internal_response_cb(conn, req, message, &finished);
+ ldap_msgfree(message);
+
+ switch(err) {
+ case LDAP_SUCCESS:
+ break;
+ case LDAP_SERVER_DOWN:
+#ifdef LDAP_CONNECT_ERROR
+ case LDAP_CONNECT_ERROR:
+#endif
+ case LDAP_UNAVAILABLE:
+ case LDAP_OPERATIONS_ERROR:
+ case LDAP_BUSY:
+ /* requeue */
+ ldap_connection_kill(conn);
+ ldap_connection_send_next(conn);
+ finished = FALSE;
+ break;
+ case LDAP_INVALID_CREDENTIALS: {
+ /* fail everything */
+ ldap_connection_kill(conn);
+ ldap_connection_abort_all_requests(conn);
+ return 0;
+ }
+ case LDAP_SIZELIMIT_EXCEEDED:
+ case LDAP_TIMELIMIT_EXCEEDED:
+ case LDAP_NO_SUCH_ATTRIBUTE:
+ case LDAP_UNDEFINED_TYPE:
+ case LDAP_INAPPROPRIATE_MATCHING:
+ case LDAP_CONSTRAINT_VIOLATION:
+ case LDAP_TYPE_OR_VALUE_EXISTS:
+ case LDAP_INVALID_SYNTAX:
+ case LDAP_NO_SUCH_OBJECT:
+ case LDAP_ALIAS_PROBLEM:
+ case LDAP_INVALID_DN_SYNTAX:
+ case LDAP_IS_LEAF:
+ case LDAP_ALIAS_DEREF_PROBLEM:
+ case LDAP_FILTER_ERROR:
+ case LDAP_LOCAL_ERROR:
+ finished = TRUE;
+ break;
+ default:
+ /* ignore */
+ break;
+ }
+
+ if (finished) {
+ i_assert(req != NULL);
+ ldap_connection_request_destroy(&req);
+ conn->pending--;
+ aqueue_delete(conn->request_queue, i);
+ return 1;
+ }
+ return 0;
+}
+
+static
+void ldap_connection_read_more(struct ldap_connection *conn)
+{
+ struct timeval tv = {
+ .tv_sec = 0,
+ .tv_usec = 0
+ };
+
+ LDAPMessage *message;
+ int ret;
+
+ /* try get a message */
+ ret = ldap_result(conn->conn, LDAP_RES_ANY, 0, &tv, &message);
+ if (ret > 0)
+ ret = ldap_connection_handle_message(conn, message);
+
+ if (ret == -1) {
+ if (ldap_get_option(conn->conn, LDAP_OPT_RESULT_CODE, &ret) != LDAP_SUCCESS)
+ i_unreached();
+ if (ret != LDAP_SERVER_DOWN)
+ i_error("ldap_result() failed: %s", ldap_err2string(ret));
+ else
+ i_error("Connection lost to LDAP server, reconnecting");
+ /* kill me */
+ ldap_connection_kill(conn);
+ } else if (ret != 0) {
+ ldap_connection_send_next(conn);
+ }
+ /* reset timeout */
+ if (conn->to_disconnect != NULL)
+ timeout_reset(conn->to_disconnect);
+}
+
+bool ldap_result_has_failed(struct ldap_result *result)
+{
+ i_assert((result->openldap_ret == LDAP_SUCCESS) == (result->error_string == NULL));
+ return result->openldap_ret != LDAP_SUCCESS;
+}
+
+const char *ldap_result_get_error(struct ldap_result *result)
+{
+ i_assert((result->openldap_ret == LDAP_SUCCESS) == (result->error_string == NULL));
+ return result->error_string;
+}
diff --git a/src/lib-ldap/ldap-entry.c b/src/lib-ldap/ldap-entry.c
new file mode 100644
index 0000000..639b931
--- /dev/null
+++ b/src/lib-ldap/ldap-entry.c
@@ -0,0 +1,72 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "ldap-private.h"
+
+int ldap_entry_init(struct ldap_entry *obj, struct ldap_result *result,
+ LDAPMessage *message)
+{
+ ARRAY_TYPE(const_string) attr_names;
+ struct berval **values;
+ int count;
+ BerElement *bptr;
+ char *tmp;
+ tmp = ldap_get_dn(result->conn->conn, message);
+ obj->dn = p_strdup(result->pool, tmp);
+ obj->result = result;
+ ldap_memfree(tmp);
+
+ tmp = ldap_first_attribute(result->conn->conn, message, &bptr);
+
+ p_array_init(&attr_names, result->pool, 8);
+ p_array_init(&obj->attributes, result->pool, 8);
+
+ while(tmp != NULL) {
+ struct ldap_attribute *attr = p_new(result->pool, struct ldap_attribute, 1);
+ attr->name = p_strdup(result->pool, tmp);
+ array_push_back(&attr_names, &attr->name);
+ values = ldap_get_values_len(result->conn->conn, message, tmp);
+ if (values != NULL) {
+ count = ldap_count_values_len(values);
+ p_array_init(&attr->values, result->pool, count);
+ for(int i = 0; i < count; i++) {
+ const char *ptr = p_strndup(result->pool, values[i]->bv_val, values[i]->bv_len);
+ array_push_back(&attr->values, &ptr);
+ }
+ ldap_value_free_len(values);
+ }
+ array_append_zero(&attr->values);
+ ldap_memfree(tmp);
+ array_push_back(&obj->attributes, attr);
+ tmp = ldap_next_attribute(result->conn->conn, message, bptr);
+ }
+
+ ber_free(bptr, 0);
+
+ array_append_zero(&attr_names);
+ obj->attr_names = array_front(&attr_names);
+
+ return 0;
+}
+
+const char *ldap_entry_dn(const struct ldap_entry *entry)
+{
+ return entry->dn;
+}
+
+const char *const *ldap_entry_get_attributes(const struct ldap_entry *entry)
+{
+ return entry->attr_names;
+}
+
+const char *const *ldap_entry_get_attribute(const struct ldap_entry *entry, const char *attribute)
+{
+ const struct ldap_attribute *attr;
+ array_foreach(&entry->attributes, attr) {
+ if (strcasecmp(attr->name, attribute) == 0) {
+ return array_front(&attr->values);
+ }
+ }
+ return NULL;
+}
diff --git a/src/lib-ldap/ldap-iterator.c b/src/lib-ldap/ldap-iterator.c
new file mode 100644
index 0000000..d825f6c
--- /dev/null
+++ b/src/lib-ldap/ldap-iterator.c
@@ -0,0 +1,29 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "ldap-private.h"
+
+struct ldap_search_iterator* ldap_search_iterator_init(struct ldap_result *result)
+{
+ struct ldap_search_iterator *iter;
+
+ i_assert(result->openldap_ret == LDAP_SUCCESS);
+ i_assert(result->error_string == NULL);
+
+ iter = p_new(result->pool, struct ldap_search_iterator, 1);
+ iter->result = result;
+ return iter;
+}
+
+const struct ldap_entry *ldap_search_iterator_next(struct ldap_search_iterator *iter)
+{
+ if (iter->idx >= array_count(&iter->result->entries))
+ return NULL;
+ return array_idx(&iter->result->entries, iter->idx++);
+}
+
+void ldap_search_iterator_deinit(struct ldap_search_iterator **iter)
+{
+ *iter = NULL;
+}
diff --git a/src/lib-ldap/ldap-private.h b/src/lib-ldap/ldap-private.h
new file mode 100644
index 0000000..fa724f4
--- /dev/null
+++ b/src/lib-ldap/ldap-private.h
@@ -0,0 +1,129 @@
+#ifndef LDAP_PRIVATE_H
+#define LDAP_PRIVATE_H
+
+#include "iostream-ssl.h"
+#include "ldap-client.h"
+
+#include <ldap.h>
+
+#define DOVE_LDAP_CONTINUE 0
+#define DOVE_LDAP_COMPLETE 1
+#define DOVE_LDAP_REQUEUE 2
+
+struct ldap_connection;
+struct ldap_result;
+
+struct ldap_op_queue_entry;
+/* Handle an LDAP response. Returns 0 on success, otherwise the OpenLDAP error
+ number. */
+typedef int ldap_response_callback_t(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *entry,
+ LDAPMessage *msg, bool *finished_r);
+/* Send the request. Returns 0 on success, otherwise the OpenLDAP error number
+ and sets error_r string. */
+typedef int ldap_send_request_t(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *entry,
+ const char **error_r);
+
+struct ldap_op_queue_entry {
+ pool_t pool;
+ struct ldap_connection *conn;
+ ldap_response_callback_t *internal_response_cb;
+ void *ctx;
+
+ int msgid;
+
+ unsigned int timeout_secs;
+ struct timeout *to_abort;
+
+ ldap_send_request_t *send_request_cb;
+
+ ldap_result_callback_t *result_callback;
+ void *result_callback_ctx;
+
+ struct {
+ struct ldap_search_input search;
+ struct ldap_compare_input compare;
+ } input;
+};
+
+struct ldap_connection {
+ pool_t pool;
+ struct ldap_client *client;
+
+ LDAP *conn;
+ enum {
+ LDAP_STATE_DISCONNECT,
+ LDAP_STATE_TLS,
+ LDAP_STATE_AUTH,
+ LDAP_STATE_CONNECT
+ } state;
+
+ BerValue cred; /* needed for SASL */
+ BerVarray scred;
+
+ struct ldap_client_settings set;
+ struct ssl_iostream_settings ssl_set;
+
+ struct aqueue *request_queue;
+ ARRAY(struct ldap_op_queue_entry *) request_array;
+
+ unsigned int sent;
+ unsigned int pending;
+
+ struct io *io;
+ struct timeout *to_disconnect;
+ struct timeout *to_reconnect;
+};
+
+struct ldap_attribute {
+ const char *name;
+ ARRAY_TYPE(const_string) values;
+};
+
+struct ldap_entry {
+ struct ldap_result *result;
+ char *dn;
+ ARRAY(struct ldap_attribute) attributes;
+ const char *const *attr_names;
+};
+
+struct ldap_result {
+ pool_t pool;
+ struct ldap_connection *conn;
+
+ ARRAY(struct ldap_entry) entries;
+ int openldap_ret;
+ bool compare_true;
+ const char *error_string;
+};
+
+struct ldap_search_iterator {
+ unsigned int idx;
+ struct ldap_result *result;
+};
+
+int ldap_connection_init(struct ldap_client *client,
+ const struct ldap_client_settings *set,
+ struct ldap_connection **conn_r, const char **error_r);
+void ldap_connection_deinit(struct ldap_connection **_conn);
+void ldap_connection_switch_ioloop(struct ldap_connection *conn);
+bool ldap_connection_have_settings(struct ldap_connection *conn,
+ const struct ldap_client_settings *set);
+
+void ldap_connection_search_start(struct ldap_connection *conn,
+ const struct ldap_search_input *input,
+ ldap_result_callback_t *callback,
+ void *context);
+void ldap_connection_compare_start(struct ldap_connection *conn,
+ const struct ldap_compare_input *input,
+ ldap_result_callback_t *callback,
+ void *context);
+
+void ldap_connection_kill(struct ldap_connection *conn);
+int ldap_connection_check(struct ldap_connection *conn);
+void ldap_connection_queue_request(struct ldap_connection *conn, struct ldap_op_queue_entry *req);
+
+int ldap_entry_init(struct ldap_entry *obj, struct ldap_result *result, LDAPMessage *message);
+
+#endif
diff --git a/src/lib-ldap/ldap-search.c b/src/lib-ldap/ldap-search.c
new file mode 100644
index 0000000..694fd6d
--- /dev/null
+++ b/src/lib-ldap/ldap-search.c
@@ -0,0 +1,169 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "ldap-private.h"
+
+#include <stdio.h>
+#include <sys/time.h>
+
+struct ldap_search_ctx {
+ const struct ldap_search_input *input;
+ struct ldap_result res;
+};
+
+static void
+ldap_search_result_failure(struct ldap_op_queue_entry *req,
+ int ret, const char *error)
+{
+ struct ldap_search_ctx *sctx = req->ctx;
+ sctx->res.openldap_ret = ret;
+ sctx->res.error_string = error;
+ req->result_callback(&sctx->res, req->result_callback_ctx);
+}
+
+static void ldap_search_result_success(struct ldap_op_queue_entry *req)
+{
+ struct ldap_search_ctx *sctx = req->ctx;
+ sctx->res.openldap_ret = LDAP_SUCCESS;
+ req->result_callback(&sctx->res, req->result_callback_ctx);
+}
+
+static int
+ldap_search_callback(struct ldap_connection *conn,
+ struct ldap_op_queue_entry *req,
+ LDAPMessage *message, bool *finished_r)
+{
+ struct ldap_search_ctx *sctx = req->ctx;
+ int msgtype = ldap_msgtype(message);
+ char *result_errmsg = NULL;
+ int ret, result_err;
+
+ if (msgtype != LDAP_RES_SEARCH_ENTRY &&
+ msgtype != LDAP_RES_SEARCH_RESULT) {
+ *finished_r = FALSE;
+ return LDAP_SUCCESS;
+ }
+ *finished_r = TRUE;
+
+ ret = ldap_parse_result(conn->conn, message, &result_err, NULL,
+ &result_errmsg, NULL, NULL, 0);
+ if (ret == LDAP_NO_RESULTS_RETURNED) {
+ /*ret = LDAP_SUCCESS;*/
+ } else if (ret != LDAP_SUCCESS) {
+ ldap_search_result_failure(req, ret, t_strdup_printf(
+ "ldap_parse_result() failed for search: %s", ldap_err2string(ret)));
+ return ret;
+ } else if (result_err != LDAP_SUCCESS) {
+ const struct ldap_search_input *input = &req->input.search;
+ const char *error = result_errmsg != NULL ?
+ result_errmsg : ldap_err2string(result_err);
+ ldap_search_result_failure(req, result_err, t_strdup_printf(
+ "ldap_search_ext(base=%s, scope=%d, filter=%s) failed: %s",
+ input->base_dn, input->scope, input->filter, error));
+ ldap_memfree(result_errmsg);
+ return result_err;
+ }
+
+ LDAPMessage *res = ldap_first_entry(conn->conn, message);
+
+ while(res != NULL) {
+ struct ldap_entry *obj = p_new(req->pool, struct ldap_entry, 1);
+ ldap_entry_init(obj, &sctx->res, message);
+ array_push_back(&sctx->res.entries, obj);
+ res = ldap_next_entry(conn->conn, res);
+ }
+
+ if (msgtype == LDAP_RES_SEARCH_RESULT) {
+ ldap_search_result_success(req);
+ return LDAP_SUCCESS;
+ }
+
+ *finished_r = FALSE;
+ return LDAP_SUCCESS;
+}
+
+static int
+ldap_search_send(struct ldap_connection *conn, struct ldap_op_queue_entry *req,
+ const char **error_r)
+{
+ const struct ldap_search_input *input = &req->input.search;
+ LDAPControl manageDSAIT = {
+ LDAP_CONTROL_MANAGEDSAIT, {0, 0}, 0
+ };
+ /* try to use ManageDSAIT if available */
+ LDAPControl *sctrls[] = {
+ &manageDSAIT,
+ NULL
+ };
+
+ struct timeval tv = {
+ .tv_sec = req->timeout_secs,
+ .tv_usec = 0
+ };
+
+ int ret = ldap_search_ext(conn->conn,
+ input->base_dn,
+ input->scope,
+ input->filter,
+ (char**)input->attributes,
+ 0,
+ sctrls,
+ NULL,
+ &tv,
+ input->size_limit,
+ &req->msgid);
+
+ if (ret != LDAP_SUCCESS) {
+ *error_r = t_strdup_printf(
+ "ldap_search_ext(base=%s, scope=%d, filter=%s) failed: %s",
+ input->base_dn, input->scope, input->filter,
+ ldap_err2string(ret));
+ }
+ return ret;
+}
+
+void ldap_connection_search_start(struct ldap_connection *conn,
+ const struct ldap_search_input *input,
+ ldap_result_callback_t *callback,
+ void *context)
+{
+ struct ldap_op_queue_entry *req;
+ pool_t pool = pool_alloconly_create(MEMPOOL_GROWING "ldap search", 128);
+ req = p_new(pool, struct ldap_op_queue_entry, 1);
+ req->pool = pool;
+
+ struct ldap_search_ctx *sctx = p_new(pool, struct ldap_search_ctx, 1);
+ sctx->res.conn = conn;
+ sctx->res.pool = pool;
+
+ p_array_init(&sctx->res.entries, req->pool, 8);
+
+ req->internal_response_cb = ldap_search_callback;
+
+ req->result_callback = callback;
+ req->result_callback_ctx = context;
+ req->input.search = *input;
+
+ /* copy strings */
+ req->input.search.base_dn = p_strdup(req->pool, input->base_dn);
+ req->input.search.filter = p_strdup(req->pool, input->filter);
+
+ if (input->attributes != NULL) {
+ ARRAY_TYPE(const_string) arr;
+ p_array_init(&arr, req->pool, 8);
+ for (const char *const *ptr = input->attributes; *ptr != NULL; ptr++) {
+ const char *tmp = p_strdup(req->pool, *ptr);
+ array_push_back(&arr, &tmp);
+ }
+ array_append_zero(&arr);
+ req->input.search.attributes = array_front_modifiable(&arr);
+ }
+
+ req->send_request_cb = ldap_search_send;
+ sctx->input = &req->input.search;
+ req->ctx = sctx;
+ req->timeout_secs = input->timeout_secs;
+
+ ldap_connection_queue_request(conn, req);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 19:11:47 +0000