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-rw-r--r--src/lib-sasl/Makefile.am40
-rw-r--r--src/lib-sasl/Makefile.in870
-rw-r--r--src/lib-sasl/dsasl-client-private.h45
-rw-r--r--src/lib-sasl/dsasl-client.c152
-rw-r--r--src/lib-sasl/dsasl-client.h50
-rw-r--r--src/lib-sasl/mech-external.c59
-rw-r--r--src/lib-sasl/mech-login.c75
-rw-r--r--src/lib-sasl/mech-oauthbearer.c201
-rw-r--r--src/lib-sasl/mech-plain.c70
-rw-r--r--src/lib-sasl/test-sasl-client.c419
10 files changed, 1981 insertions, 0 deletions
diff --git a/src/lib-sasl/Makefile.am b/src/lib-sasl/Makefile.am
new file mode 100644
index 0000000..5017bb9
--- /dev/null
+++ b/src/lib-sasl/Makefile.am
@@ -0,0 +1,40 @@
+noinst_LTLIBRARIES = libsasl.la
+
+AM_CPPFLAGS = \
+ -I$(top_srcdir)/src/lib \
+ -I$(top_srcdir)/src/lib-test
+
+libsasl_la_SOURCES = \
+ mech-external.c \
+ mech-login.c \
+ mech-plain.c \
+ mech-oauthbearer.c \
+ dsasl-client.c
+
+headers = \
+ dsasl-client.h \
+ dsasl-client-private.h
+
+pkginc_libdir=$(pkgincludedir)
+pkginc_lib_HEADERS = $(headers)
+
+test_programs = \
+ test-sasl-client
+
+noinst_PROGRAMS = $(test_programs)
+
+test_libs = \
+ $(noinst_LTLIBRARIES) \
+ ../lib-test/libtest.la \
+ ../lib/liblib.la
+
+test_deps = $(test_libs)
+
+test_sasl_client_SOURCES = test-sasl-client.c
+test_sasl_client_LDADD = $(test_libs)
+test_sasl_client_DEPENDENCIES = $(test_deps)
+
+check-local:
+ for bin in $(test_programs); do \
+ if ! $(RUN_TEST) ./$$bin; then exit 1; fi; \
+ done
diff --git a/src/lib-sasl/Makefile.in b/src/lib-sasl/Makefile.in
new file mode 100644
index 0000000..8c3493a
--- /dev/null
+++ b/src/lib-sasl/Makefile.in
@@ -0,0 +1,870 @@
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+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
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+# 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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diff --git a/src/lib-sasl/dsasl-client-private.h b/src/lib-sasl/dsasl-client-private.h
new file mode 100644
index 0000000..65b86f7
--- /dev/null
+++ b/src/lib-sasl/dsasl-client-private.h
@@ -0,0 +1,45 @@
+#ifndef DSASL_CLIENT_PRIVATE_H
+#define DSASL_CLIENT_PRIVATE_H
+
+#include "dsasl-client.h"
+
+enum dsasl_mech_security_flags {
+ DSASL_MECH_SEC_ALLOW_NULS = 0x0001,
+};
+
+struct dsasl_client {
+ pool_t pool;
+ struct dsasl_client_settings set;
+ char *password;
+ const struct dsasl_client_mech *mech;
+};
+
+struct dsasl_client_mech {
+ const char *name;
+ size_t struct_size;
+ enum dsasl_mech_security_flags flags;
+
+ int (*input)(struct dsasl_client *client,
+ const unsigned char *input, size_t input_len,
+ const char **error_r);
+ int (*output)(struct dsasl_client *client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r);
+ int (*set_parameter)(struct dsasl_client *client,
+ const char *key, const char *value,
+ const char **error_r);
+ int (*get_result)(struct dsasl_client *client,
+ const char *key, const char **value_r,
+ const char **error_r);
+ void (*free)(struct dsasl_client *client);
+};
+
+extern const struct dsasl_client_mech dsasl_client_mech_external;
+extern const struct dsasl_client_mech dsasl_client_mech_login;
+extern const struct dsasl_client_mech dsasl_client_mech_oauthbearer;
+extern const struct dsasl_client_mech dsasl_client_mech_xoauth2;
+
+void dsasl_client_mech_register(const struct dsasl_client_mech *mech);
+void dsasl_client_mech_unregister(const struct dsasl_client_mech *mech);
+
+#endif
diff --git a/src/lib-sasl/dsasl-client.c b/src/lib-sasl/dsasl-client.c
new file mode 100644
index 0000000..bf11d5c
--- /dev/null
+++ b/src/lib-sasl/dsasl-client.c
@@ -0,0 +1,152 @@
+/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+#include "safe-memset.h"
+#include "dsasl-client-private.h"
+
+static int init_refcount = 0;
+static ARRAY(const struct dsasl_client_mech *) dsasl_mechanisms = ARRAY_INIT;
+
+static const struct dsasl_client_mech *
+dsasl_client_mech_find_idx(const char *name, unsigned int *idx_r)
+{
+ const struct dsasl_client_mech *const *mechp;
+
+ array_foreach(&dsasl_mechanisms, mechp) {
+ if (strcasecmp((*mechp)->name, name) == 0) {
+ *idx_r = array_foreach_idx(&dsasl_mechanisms, mechp);
+ return *mechp;
+ }
+ }
+ return NULL;
+}
+
+const struct dsasl_client_mech *dsasl_client_mech_find(const char *name)
+{
+ unsigned int idx;
+
+ return dsasl_client_mech_find_idx(name, &idx);
+}
+
+const char *dsasl_client_mech_get_name(const struct dsasl_client_mech *mech)
+{
+ return mech->name;
+}
+
+void dsasl_client_mech_register(const struct dsasl_client_mech *mech)
+{
+ unsigned int idx;
+
+ if (dsasl_client_mech_find_idx(mech->name, &idx) != NULL) {
+ /* allow plugins to override the default mechanisms */
+ array_delete(&dsasl_mechanisms, idx, 1);
+ }
+ array_push_back(&dsasl_mechanisms, &mech);
+}
+
+void dsasl_client_mech_unregister(const struct dsasl_client_mech *mech)
+{
+ unsigned int idx;
+
+ if (dsasl_client_mech_find_idx(mech->name, &idx) == NULL)
+ i_panic("SASL mechanism not registered: %s", mech->name);
+ array_delete(&dsasl_mechanisms, idx, 1);
+}
+
+struct dsasl_client *dsasl_client_new(const struct dsasl_client_mech *mech,
+ const struct dsasl_client_settings *set)
+{
+ struct dsasl_client *client;
+ pool_t pool = pool_alloconly_create("sasl client", 512);
+
+ client = p_malloc(pool, mech->struct_size);
+ client->pool = pool;
+ client->mech = mech;
+ client->set.authid = p_strdup(pool, set->authid);
+ client->set.authzid = p_strdup(pool, set->authzid);
+ client->password = p_strdup(pool, set->password);
+ client->set.password = client->password;
+ return client;
+}
+
+void dsasl_client_free(struct dsasl_client **_client)
+{
+ struct dsasl_client *client = *_client;
+
+ if (client == NULL)
+ return;
+ *_client = NULL;
+
+ if (client->mech->free != NULL)
+ client->mech->free(client);
+ if (client->password != NULL)
+ safe_memset(client->password, 0, strlen(client->password));
+ pool_unref(&client->pool);
+}
+
+int dsasl_client_input(struct dsasl_client *client,
+ const unsigned char *input, size_t input_len,
+ const char **error_r)
+{
+ if ((client->mech->flags & DSASL_MECH_SEC_ALLOW_NULS) == 0 &&
+ memchr(input, '\0', input_len) != NULL) {
+ *error_r = "Unexpected NUL in input data";
+ return -1;
+ }
+ return client->mech->input(client, input, input_len, error_r);
+}
+
+int dsasl_client_output(struct dsasl_client *client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r)
+{
+ return client->mech->output(client, output_r, output_len_r, error_r);
+}
+
+int dsasl_client_set_parameter(struct dsasl_client *client,
+ const char *param, const char *value,
+ const char **error_r)
+{
+ if (client->mech->set_parameter != NULL) {
+ int ret = client->mech->set_parameter(client, param,
+ value, error_r);
+ i_assert(ret >= 0 || *error_r != NULL);
+ return ret;
+ } else
+ return 0;
+}
+
+int dsasl_client_get_result(struct dsasl_client *client,
+ const char *key, const char **value_r,
+ const char **error_r)
+{
+ if (client->mech->get_result != NULL) {
+ int ret =
+ client->mech->get_result(client, key, value_r, error_r);
+ i_assert(ret <= 0 || *value_r != NULL);
+ i_assert(ret >= 0 || *error_r != NULL);
+ return ret;
+ } else
+ return 0;
+}
+
+void dsasl_clients_init(void)
+{
+ if (init_refcount++ > 0)
+ return;
+
+ i_array_init(&dsasl_mechanisms, 8);
+ dsasl_client_mech_register(&dsasl_client_mech_external);
+ dsasl_client_mech_register(&dsasl_client_mech_plain);
+ dsasl_client_mech_register(&dsasl_client_mech_login);
+ dsasl_client_mech_register(&dsasl_client_mech_oauthbearer);
+ dsasl_client_mech_register(&dsasl_client_mech_xoauth2);
+}
+
+void dsasl_clients_deinit(void)
+{
+ if (--init_refcount > 0)
+ return;
+ array_free(&dsasl_mechanisms);
+}
diff --git a/src/lib-sasl/dsasl-client.h b/src/lib-sasl/dsasl-client.h
new file mode 100644
index 0000000..999008d
--- /dev/null
+++ b/src/lib-sasl/dsasl-client.h
@@ -0,0 +1,50 @@
+#ifndef DSASL_CLIENT_H
+#define DSASL_CLIENT_H
+
+struct dsasl_client_settings {
+ /* authentication ID - must be set with most mechanisms */
+ const char *authid;
+ /* authorization ID (who to log in as, if authentication ID is a
+ master user) */
+ const char *authzid;
+ /* password - must be set with most mechanisms */
+ const char *password;
+};
+
+/* PLAIN mechanism always exists and can be accessed directly via this. */
+extern const struct dsasl_client_mech dsasl_client_mech_plain;
+
+const struct dsasl_client_mech *dsasl_client_mech_find(const char *name);
+const char *dsasl_client_mech_get_name(const struct dsasl_client_mech *mech);
+
+struct dsasl_client *dsasl_client_new(const struct dsasl_client_mech *mech,
+ const struct dsasl_client_settings *set);
+void dsasl_client_free(struct dsasl_client **client);
+
+/* Call for server input. */
+int dsasl_client_input(struct dsasl_client *client,
+ const unsigned char *input, size_t input_len,
+ const char **error_r);
+/* Call for getting server output. Also used to get the initial SASL response
+ if supported by the protocol. */
+int dsasl_client_output(struct dsasl_client *client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r);
+
+/* Call for setting extra parameters for authentication, these are mechanism
+ dependent. -1 = error, 0 = not found, 1 = ok
+ value can be NULL. */
+int dsasl_client_set_parameter(struct dsasl_client *client,
+ const char *param, const char *value,
+ const char **error_r) ATTR_NULL(3);
+
+/* Call for getting extra result information.
+ -1 = error, 0 = not found, 1 = ok */
+int dsasl_client_get_result(struct dsasl_client *client,
+ const char *key, const char **value_r,
+ const char **error_r);
+
+void dsasl_clients_init(void);
+void dsasl_clients_deinit(void);
+
+#endif
diff --git a/src/lib-sasl/mech-external.c b/src/lib-sasl/mech-external.c
new file mode 100644
index 0000000..7df94b4
--- /dev/null
+++ b/src/lib-sasl/mech-external.c
@@ -0,0 +1,59 @@
+/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "dsasl-client-private.h"
+
+struct external_dsasl_client {
+ struct dsasl_client client;
+ bool output_sent;
+};
+
+static int
+mech_external_input(struct dsasl_client *_client,
+ const unsigned char *input ATTR_UNUSED, size_t input_len,
+ const char **error_r)
+{
+ struct external_dsasl_client *client =
+ (struct external_dsasl_client *)_client;
+
+ if (!client->output_sent) {
+ if (input_len > 0) {
+ *error_r = "Server sent non-empty initial response";
+ return -1;
+ }
+ } else {
+ *error_r = "Server didn't finish authentication";
+ return -1;
+ }
+ return 0;
+}
+
+static int
+mech_external_output(struct dsasl_client *_client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r ATTR_UNUSED)
+{
+ struct external_dsasl_client *client =
+ (struct external_dsasl_client *)_client;
+ const char *username;
+
+ if (_client->set.authzid != NULL)
+ username = _client->set.authzid;
+ else if (_client->set.authid != NULL)
+ username = _client->set.authid;
+ else
+ username = "";
+
+ *output_r = (const void *)username;
+ *output_len_r = strlen(username);
+ client->output_sent = TRUE;
+ return 0;
+}
+
+const struct dsasl_client_mech dsasl_client_mech_external = {
+ .name = "EXTERNAL",
+ .struct_size = sizeof(struct external_dsasl_client),
+
+ .input = mech_external_input,
+ .output = mech_external_output
+};
diff --git a/src/lib-sasl/mech-login.c b/src/lib-sasl/mech-login.c
new file mode 100644
index 0000000..83714f1
--- /dev/null
+++ b/src/lib-sasl/mech-login.c
@@ -0,0 +1,75 @@
+/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "str.h"
+#include "dsasl-client-private.h"
+
+enum login_state {
+ STATE_INIT = 0,
+ STATE_USER,
+ STATE_PASS
+};
+
+struct login_dsasl_client {
+ struct dsasl_client client;
+ enum login_state state;
+};
+
+static int
+mech_login_input(struct dsasl_client *_client,
+ const unsigned char *input ATTR_UNUSED,
+ size_t input_len ATTR_UNUSED,
+ const char **error_r)
+{
+ struct login_dsasl_client *client =
+ (struct login_dsasl_client *)_client;
+
+ if (client->state == STATE_PASS) {
+ *error_r = "Server didn't finish authentication";
+ return -1;
+ }
+ client->state++;
+ return 0;
+}
+
+static int
+mech_login_output(struct dsasl_client *_client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r)
+{
+ struct login_dsasl_client *client =
+ (struct login_dsasl_client *)_client;
+
+ if (_client->set.authid == NULL) {
+ *error_r = "authid not set";
+ return -1;
+ }
+ if (_client->password == NULL) {
+ *error_r = "password not set";
+ return -1;
+ }
+
+ switch (client->state) {
+ case STATE_INIT:
+ *output_r = uchar_empty_ptr;
+ *output_len_r = 0;
+ return 0;
+ case STATE_USER:
+ *output_r = (const unsigned char *)_client->set.authid;
+ *output_len_r = strlen(_client->set.authid);
+ return 0;
+ case STATE_PASS:
+ *output_r = (const unsigned char *)_client->set.password;
+ *output_len_r = strlen(_client->set.password);
+ return 0;
+ }
+ i_unreached();
+}
+
+const struct dsasl_client_mech dsasl_client_mech_login = {
+ .name = "LOGIN",
+ .struct_size = sizeof(struct login_dsasl_client),
+
+ .input = mech_login_input,
+ .output = mech_login_output
+};
diff --git a/src/lib-sasl/mech-oauthbearer.c b/src/lib-sasl/mech-oauthbearer.c
new file mode 100644
index 0000000..62ec6bc
--- /dev/null
+++ b/src/lib-sasl/mech-oauthbearer.c
@@ -0,0 +1,201 @@
+/* Copyright (c) 2017-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "str.h"
+#include "net.h"
+#include "json-parser.h"
+#include "istream.h"
+#include "dsasl-client-private.h"
+
+struct oauthbearer_dsasl_client {
+ struct dsasl_client client;
+ const char *host;
+ const char *status;
+ in_port_t port;
+ bool output_sent;
+};
+
+static int
+mech_oauthbearer_input(struct dsasl_client *_client,
+ const unsigned char *input, size_t input_len,
+ const char **error_r)
+{
+ struct oauthbearer_dsasl_client *client =
+ (struct oauthbearer_dsasl_client *)_client;
+
+ if (!client->output_sent) {
+ if (input_len > 0) {
+ *error_r = "Server sent non-empty initial response";
+ return -1;
+ }
+ } else {
+ client->status = "";
+ /* if response is empty, authentication has *SUCCEEDED* */
+ if (input_len == 0)
+ return 0;
+
+ /* authentication has failed, try parse status.
+ we are only interested in extracting status if possible
+ so we don't really need to much error handling. */
+ struct istream *is = i_stream_create_from_data(input, input_len);
+ const char *status = NULL, *value;
+ const char *error = NULL;
+ enum json_type jtype;
+ bool found_status = FALSE;
+ struct json_parser *parser = json_parser_init(is);
+ while (json_parse_next(parser, &jtype, &value)>0) {
+ if (found_status && status == NULL) {
+ if (jtype == JSON_TYPE_STRING ||
+ jtype == JSON_TYPE_NUMBER)
+ status = t_strdup(value);
+ break;
+ } else if (jtype == JSON_TYPE_OBJECT_KEY &&
+ strcmp(value, "status") == 0) {
+ found_status = TRUE;
+ } else json_parse_skip_next(parser);
+ }
+
+ /* deinitialize json parser */
+ int ret = json_parser_deinit(&parser, &error);
+ i_stream_unref(&is);
+
+ if (status != NULL)
+ client->status = p_strdup(_client->pool, status);
+ else {
+ ret = -1;
+ if (error == NULL)
+ error = "Status value missing";
+ }
+ if (ret < 0)
+ *error_r = t_strdup_printf("Error parsing JSON reply: %s",
+ error);
+ else
+ *error_r = t_strdup_printf("Failed to authenticate: %s",
+ client->status);
+ return -1;
+ }
+ return 0;
+}
+
+static int
+mech_oauthbearer_output(struct dsasl_client *_client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r)
+{
+ struct oauthbearer_dsasl_client *client =
+ (struct oauthbearer_dsasl_client *)_client;
+ string_t *str;
+
+ if (_client->set.authid == NULL) {
+ *error_r = "authid not set";
+ return -1;
+ }
+ if (_client->password == NULL) {
+ *error_r = "password not set";
+ return -1;
+ }
+
+ str = str_new(_client->pool, 64);
+
+ str_printfa(str, "n,a=%s,\x01", _client->set.authid);
+ if (client->host != NULL && *client->host != '\0')
+ str_printfa(str, "host=%s\x01", client->host);
+ if (client->port > 0)
+ str_printfa(str, "port=%u\x01", client->port);
+ str_printfa(str, "auth=Bearer %s\x01", _client->password);
+ str_append_c(str, '\x01');
+
+ *output_r = str_data(str);
+ *output_len_r = str_len(str);
+ client->output_sent = TRUE;
+ return 0;
+}
+
+static int
+mech_xoauth2_output(struct dsasl_client *_client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r)
+{
+ struct oauthbearer_dsasl_client *client =
+ (struct oauthbearer_dsasl_client *)_client;
+ string_t *str;
+
+ if (_client->set.authid == NULL) {
+ *error_r = "authid not set";
+ return -1;
+ }
+ if (_client->password == NULL) {
+ *error_r = "password not set";
+ return -1;
+ }
+
+ str = str_new(_client->pool, 64);
+
+ str_printfa(str, "user=%s\x01", _client->set.authid);
+ str_printfa(str, "auth=Bearer %s\x01", _client->password);
+ str_append_c(str, '\x01');
+
+ *output_r = str_data(str);
+ *output_len_r = str_len(str);
+ client->output_sent = TRUE;
+ return 0;
+}
+
+static int
+mech_oauthbearer_set_parameter(struct dsasl_client *_client, const char *key,
+ const char *value, const char **error_r)
+{
+ struct oauthbearer_dsasl_client *client =
+ (struct oauthbearer_dsasl_client *)_client;
+ if (strcmp(key, "host") == 0) {
+ if (value != NULL)
+ client->host = p_strdup(_client->pool, value);
+ else
+ client->host = NULL;
+ return 1;
+ } else if (strcmp(key, "port") == 0) {
+ if (value == NULL) {
+ client->port = 0;
+ } else if (net_str2port(value, &client->port) < 0) {
+ *error_r = "Invalid port value";
+ return -1;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+static int
+mech_oauthbearer_get_result(struct dsasl_client *_client, const char *key,
+ const char **value_r, const char **error_r ATTR_UNUSED)
+{
+ struct oauthbearer_dsasl_client *client =
+ (struct oauthbearer_dsasl_client *)_client;
+ if (strcmp(key, "status") == 0) {
+ /* this is set to value after login attempt */
+ i_assert(client->status != NULL);
+ *value_r = client->status;
+ return 1;
+ }
+ return 0;
+}
+
+const struct dsasl_client_mech dsasl_client_mech_oauthbearer = {
+ .name = "OAUTHBEARER",
+ .struct_size = sizeof(struct oauthbearer_dsasl_client),
+
+ .input = mech_oauthbearer_input,
+ .output = mech_oauthbearer_output,
+ .set_parameter = mech_oauthbearer_set_parameter,
+ .get_result = mech_oauthbearer_get_result,
+};
+
+const struct dsasl_client_mech dsasl_client_mech_xoauth2 = {
+ .name = "XOAUTH2",
+ .struct_size = sizeof(struct oauthbearer_dsasl_client),
+
+ .input = mech_oauthbearer_input,
+ .output = mech_xoauth2_output,
+ .set_parameter = mech_oauthbearer_set_parameter,
+ .get_result = mech_oauthbearer_get_result,
+};
diff --git a/src/lib-sasl/mech-plain.c b/src/lib-sasl/mech-plain.c
new file mode 100644
index 0000000..432fa1f
--- /dev/null
+++ b/src/lib-sasl/mech-plain.c
@@ -0,0 +1,70 @@
+/* Copyright (c) 2013-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "str.h"
+#include "dsasl-client-private.h"
+
+struct plain_dsasl_client {
+ struct dsasl_client client;
+ bool output_sent;
+};
+
+static int
+mech_plain_input(struct dsasl_client *_client,
+ const unsigned char *input ATTR_UNUSED, size_t input_len,
+ const char **error_r)
+{
+ struct plain_dsasl_client *client =
+ (struct plain_dsasl_client *)_client;
+
+ if (!client->output_sent) {
+ if (input_len > 0) {
+ *error_r = "Server sent non-empty initial response";
+ return -1;
+ }
+ } else {
+ *error_r = "Server didn't finish authentication";
+ return -1;
+ }
+ return 0;
+}
+
+static int
+mech_plain_output(struct dsasl_client *_client,
+ const unsigned char **output_r, size_t *output_len_r,
+ const char **error_r)
+{
+ struct plain_dsasl_client *client =
+ (struct plain_dsasl_client *)_client;
+ string_t *str;
+
+ if (_client->set.authid == NULL) {
+ *error_r = "authid not set";
+ return -1;
+ }
+ if (_client->password == NULL) {
+ *error_r = "password not set";
+ return -1;
+ }
+
+ str = str_new(_client->pool, 64);
+ if (_client->set.authzid != NULL)
+ str_append(str, _client->set.authzid);
+ str_append_c(str, '\0');
+ str_append(str, _client->set.authid);
+ str_append_c(str, '\0');
+ str_append(str, _client->password);
+
+ *output_r = str_data(str);
+ *output_len_r = str_len(str);
+ client->output_sent = TRUE;
+ return 0;
+}
+
+const struct dsasl_client_mech dsasl_client_mech_plain = {
+ .name = "PLAIN",
+ .struct_size = sizeof(struct plain_dsasl_client),
+
+ .input = mech_plain_input,
+ .output = mech_plain_output
+};
diff --git a/src/lib-sasl/test-sasl-client.c b/src/lib-sasl/test-sasl-client.c
new file mode 100644
index 0000000..05b65f2
--- /dev/null
+++ b/src/lib-sasl/test-sasl-client.c
@@ -0,0 +1,419 @@
+#include "lib.h"
+#include "str.h"
+#include "strfuncs.h"
+#include "test-common.h"
+#include "dsasl-client.h"
+
+static const struct dsasl_client_settings sasl_empty_set = {
+ .authid = NULL,
+};
+
+static const struct dsasl_client_settings sasl_no_password_set = {
+ .authid = "testuser",
+};
+
+static const struct dsasl_client_settings sasl_set = {
+ .authid = "testuser",
+ .password = "testpassword"
+};
+
+static const struct dsasl_client_settings sasl_master_set = {
+ .authzid = "testuser",
+ .authid = "masteruser",
+ .password = "masterpassword"
+};
+
+static void test_sasl_client_login(void)
+{
+ const char *error;
+ test_begin("sasl client LOGIN");
+ const struct dsasl_client_mech *mech = dsasl_client_mech_find("login");
+ i_assert(mech != NULL);
+ struct dsasl_client *client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ string_t *input = t_str_new(64);
+ string_t *output_s = t_str_new(64);
+ const unsigned char *output;
+ size_t olen;
+
+ /* parameters shouldn't work (test here for completeness) */
+ test_assert(dsasl_client_set_parameter(client, "parameter", "value", &error) == 0);
+
+ /* Any input is valid */
+ str_append(input, "Username:");
+ test_assert(dsasl_client_input(client, input->data, input->used, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ /* see what we got */
+ str_append_data(output_s, output, olen);
+ test_assert_strcmp(str_c(output_s), "testuser");
+
+ str_truncate(input, 0);
+ str_truncate(output_s, 0);
+
+ str_append(input, "Password:");
+ test_assert(dsasl_client_input(client, input->data, input->used, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ str_append_data(output_s, output, olen);
+ test_assert_strcmp(str_c(output_s), "testpassword");
+
+ /* there should be no results to collect, we can reuse error here */
+ test_assert(dsasl_client_get_result(client, "parameter", &error, &error) == 0);
+
+ dsasl_client_free(&client);
+ test_assert(client == NULL);
+
+ /* server sends input after password */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == -1);
+ test_assert_strcmp(error, "Server didn't finish authentication");
+
+ dsasl_client_free(&client);
+
+ /* missing username & password */
+ client = dsasl_client_new(mech, &sasl_empty_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "authid not set");
+ dsasl_client_free(&client);
+
+ /* missing password */
+ client = dsasl_client_new(mech, &sasl_no_password_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "password not set");
+ dsasl_client_free(&client);
+
+ /* unexpected NUL byte in input */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ str_truncate(input, 0);
+ str_append_data(input, "unexpected\0", 11);
+ test_assert(dsasl_client_input(client, input->data, input->used, &error) == -1);
+ test_assert_strcmp(error, "Unexpected NUL in input data");
+ dsasl_client_free(&client);
+
+ test_end();
+}
+
+static void test_sasl_client_plain(void)
+{
+ const char *error;
+ test_begin("sasl client PLAIN");
+ const struct dsasl_client_mech *mech = dsasl_client_mech_find("plain");
+ i_assert(mech != NULL);
+ struct dsasl_client *client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ const unsigned char *output;
+ size_t olen;
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ const unsigned char expected[] = "\0testuser\0testpassword";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected) - 1);
+ test_assert(memcmp(output, expected, I_MIN(sizeof(expected) - 1, olen)) == 0);
+
+ dsasl_client_free(&client);
+ test_assert(client == NULL);
+
+ client = dsasl_client_new(mech, &sasl_master_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ const unsigned char expected_master[] =
+ "testuser\0masteruser\0masterpassword";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected_master) - 1);
+ test_assert(memcmp(output, expected_master,
+ I_MIN(sizeof(expected_master) - 1, olen)) == 0);
+
+ dsasl_client_free(&client);
+
+ /* unexpected initial response */
+ const unsigned char input[] = "ir";
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+ test_assert(dsasl_client_input(client, input, sizeof(input)-1, &error) == -1);
+ test_assert_strcmp(error, "Server sent non-empty initial response");
+
+ dsasl_client_free(&client);
+
+ /* server sends input after response */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == -1);
+ test_assert_strcmp(error, "Server didn't finish authentication");
+
+ dsasl_client_free(&client);
+
+ /* missing username & password */
+ client = dsasl_client_new(mech, &sasl_empty_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "authid not set");
+ dsasl_client_free(&client);
+
+ /* missing password */
+ client = dsasl_client_new(mech, &sasl_no_password_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "password not set");
+ dsasl_client_free(&client);
+
+ /* unexpected NUL byte in input */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ const unsigned char input2[] = "unexpected\0";
+ test_assert(dsasl_client_input(client, input2, sizeof(input2), &error) == -1);
+ test_assert_strcmp(error, "Unexpected NUL in input data");
+ dsasl_client_free(&client);
+
+ test_end();
+}
+
+static void test_sasl_client_external(void)
+{
+ const char *error;
+ test_begin("sasl client EXTERNAL");
+ const struct dsasl_client_mech *mech = dsasl_client_mech_find("external");
+ i_assert(mech != NULL);
+ struct dsasl_client *client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ const unsigned char *output;
+ size_t olen;
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ const unsigned char expected[] = "testuser";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected) - 1);
+ test_assert(memcmp(output, expected, I_MIN(sizeof(expected) - 1, olen)) == 0);
+
+ dsasl_client_free(&client);
+ test_assert(client == NULL);
+
+ client = dsasl_client_new(mech, &sasl_master_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ const unsigned char expected_master[] = "testuser";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected_master) - 1);
+ test_assert(memcmp(output, expected_master,
+ I_MIN(sizeof(expected_master) - 1, olen)) == 0);
+
+ dsasl_client_free(&client);
+
+ /* unexpected NUL byte in input */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ const unsigned char input2[] = "unexpected\0";
+ test_assert(dsasl_client_input(client, input2, sizeof(input2), &error) == -1);
+ test_assert_strcmp(error, "Unexpected NUL in input data");
+ dsasl_client_free(&client);
+
+ test_end();
+}
+
+static void test_sasl_client_oauthbearer(void)
+{
+ const char *error;
+ const char *value;
+ test_begin("sasl client OAUTHBEARER");
+ const struct dsasl_client_mech *mech = dsasl_client_mech_find("oauthbearer");
+ i_assert(mech != NULL);
+ struct dsasl_client *client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ string_t *input = t_str_new(64);
+ const unsigned char *output;
+ size_t olen;
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+
+ const unsigned char expected[] = "n,a=testuser,\1"
+ "auth=Bearer testpassword\1\1";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected) - 1);
+ test_assert(memcmp(output, expected, I_MIN(sizeof(expected) - 1, olen)) == 0);
+ test_assert(dsasl_client_get_result(client, "status", &value, &error) == 1);
+ test_assert_strcmp(value, "");
+
+ dsasl_client_free(&client);
+ test_assert(client == NULL);
+
+ /* with host & port set */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_set_parameter(client, "host", "example.com", &error) == 1);
+ test_assert(dsasl_client_set_parameter(client, "port", "imap", &error) == -1);
+ test_assert_strcmp(error, "Invalid port value");
+ test_assert(dsasl_client_set_parameter(client, "port", "143", &error) == 1);
+ test_assert(dsasl_client_set_parameter(client, "unknown", "value", &error) == 0);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+
+ const unsigned char expected_h_p[] = "n,a=testuser,\1"
+ "host=example.com\1"
+ "port=143\1"
+ "auth=Bearer testpassword\1\1";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected_h_p) - 1);
+ test_assert(memcmp(output, expected_h_p,
+ I_MIN(sizeof(expected_h_p) - 1, olen)) == 0);
+
+ dsasl_client_free(&client);
+ test_assert(client == NULL);
+
+ client = dsasl_client_new(mech, &sasl_set);
+ /* test error response */
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ str_append(input, "{\"status\":\"401\",\"schemes\":\"bearer\",\"scope\":\"mail\"}");
+ test_assert(dsasl_client_input(client, input->data, input->used, &error) == -1);
+ test_assert_strcmp(error, "Failed to authenticate: 401");
+ test_assert(dsasl_client_get_result(client, "status", &value, &error) == 1);
+ test_assert_strcmp(value, "401");
+
+ dsasl_client_free(&client);
+
+ /* missing username & password */
+ client = dsasl_client_new(mech, &sasl_empty_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "authid not set");
+ dsasl_client_free(&client);
+
+ /* missing password */
+ client = dsasl_client_new(mech, &sasl_no_password_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "password not set");
+ dsasl_client_free(&client);
+
+ /* unexpected NUL byte in input */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ const unsigned char input2[] = "unexpected\0";
+ test_assert(dsasl_client_input(client, input2, sizeof(input2), &error) == -1);
+ test_assert_strcmp(error, "Unexpected NUL in input data");
+ dsasl_client_free(&client);
+
+ test_end();
+}
+
+static void test_sasl_client_xoauth2(void)
+{
+ const char *error;
+ test_begin("sasl client XOAUTH2");
+ const struct dsasl_client_mech *mech = dsasl_client_mech_find("xoauth2");
+ i_assert(mech != NULL);
+ struct dsasl_client *client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ string_t *input = t_str_new(64);
+ const unsigned char *output;
+ size_t olen;
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+
+ const unsigned char expected[] = "user=testuser\1auth=Bearer testpassword\1\1";
+ /* there is no NUL byte at the end */
+ test_assert(olen == sizeof(expected) - 1);
+ test_assert(memcmp(output, expected, I_MIN(sizeof(expected) - 1, olen)) == 0);
+
+ dsasl_client_free(&client);
+ test_assert(client == NULL);
+
+ client = dsasl_client_new(mech, &sasl_set);
+ /* test error response */
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == 0);
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ str_append(input, "{\"status\":\"401\",\"schemes\":\"bearer\",\"scope\":\"mail\"}");
+ test_assert(dsasl_client_input(client, input->data, input->used, &error) == -1);
+ test_assert_strcmp(error, "Failed to authenticate: 401");
+
+ dsasl_client_free(&client);
+
+ /* missing username & password */
+ client = dsasl_client_new(mech, &sasl_empty_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "authid not set");
+ dsasl_client_free(&client);
+
+ /* missing password */
+ client = dsasl_client_new(mech, &sasl_no_password_set);
+ i_assert(client != NULL);
+
+ test_assert(dsasl_client_input(client, uchar_empty_ptr, 0, &error) == 0);
+ test_assert(dsasl_client_output(client, &output, &olen, &error) == -1);
+ test_assert_strcmp(error, "password not set");
+ dsasl_client_free(&client);
+
+ /* unexpected NUL byte in input */
+ client = dsasl_client_new(mech, &sasl_set);
+ i_assert(client != NULL);
+
+ const unsigned char input2[] = "unexpected\0";
+ test_assert(dsasl_client_input(client, input2, sizeof(input2), &error) == -1);
+ test_assert_strcmp(error, "Unexpected NUL in input data");
+ dsasl_client_free(&client);
+
+ test_end();
+}
+
+int main(void)
+{
+ static void (*const test_functions[])(void) = {
+ test_sasl_client_login,
+ test_sasl_client_plain,
+ test_sasl_client_external,
+ test_sasl_client_oauthbearer,
+ test_sasl_client_xoauth2,
+ NULL
+ };
+ dsasl_clients_init();
+ int ret = test_run(test_functions);
+ dsasl_clients_deinit();
+ return ret;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 05:12:12 +0000