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doveadm-auth.c
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doveadm-auth.c
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/* Copyright (c) 2009-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "ioloop.h"
#include "array.h"
#include "askpass.h"
#include "base64.h"
#include "hex-binary.h"
#include "str.h"
#include "var-expand.h"
#include "wildcard-match.h"
#include "settings-parser.h"
#include "master-service.h"
#include "master-service-settings.h"
#include "auth-client.h"
#include "auth-master.h"
#include "auth-server-connection.h"
#include "master-auth.h"
#include "master-login-auth.h"
#include "mail-storage-service.h"
#include "mail-user.h"
#include "doveadm.h"
#include "doveadm-print.h"
#include <stdio.h>
#include <unistd.h>
static struct event_category event_category_auth = {
.name = "auth",
};
struct authtest_input {
pool_t pool;
const char *username;
const char *master_user;
const char *password;
struct auth_user_info info;
bool success;
struct auth_client_request *request;
struct master_auth_request master_auth_req;
unsigned int auth_id;
unsigned int auth_pid;
const char *auth_cookie;
};
static void auth_cmd_help(doveadm_command_t *cmd);
static struct auth_master_connection *
doveadm_get_auth_master_conn(const char *auth_socket_path)
{
enum auth_master_flags flags = 0;
if (doveadm_debug)
flags |= AUTH_MASTER_FLAG_DEBUG;
return auth_master_init(auth_socket_path, flags);
}
static int
cmd_user_input(struct auth_master_connection *conn,
const struct authtest_input *input,
const char *show_field, bool userdb)
{
const char *lookup_name = userdb ? "userdb lookup" : "passdb lookup";
pool_t pool;
const char *updated_username = NULL, *const *fields, *p;
int ret;
pool = pool_alloconly_create("auth master lookup", 1024);
if (userdb) {
ret = auth_master_user_lookup(conn, input->username, &input->info,
pool, &updated_username, &fields);
} else {
ret = auth_master_pass_lookup(conn, input->username, &input->info,
pool, &fields);
}
if (ret < 0) {
if (fields[0] == NULL)
i_error("%s failed for %s", lookup_name, input->username);
else {
i_error("%s failed for %s: %s", lookup_name,
input->username, fields[0]);
}
ret = -1;
} else if (ret == 0) {
fprintf(show_field == NULL ? stdout : stderr,
"%s: user %s doesn't exist\n", lookup_name,
input->username);
} else if (show_field != NULL) {
size_t show_field_len = strlen(show_field);
for (; *fields != NULL; fields++) {
if (strncmp(*fields, show_field, show_field_len) == 0 &&
(*fields)[show_field_len] == '=')
printf("%s\n", *fields + show_field_len + 1);
}
} else {
printf("%s: %s\n", userdb ? "userdb" : "passdb", input->username);
if (updated_username != NULL)
printf(" %-10s: %s\n", "user", updated_username);
for (; *fields != NULL; fields++) {
p = strchr(*fields, '=');
if (p == NULL)
printf(" %-10s\n", *fields);
else {
printf(" %-10s: %s\n",
t_strcut(*fields, '='), p + 1);
}
}
}
return ret;
}
static void
auth_callback(struct auth_client_request *request ATTR_UNUSED,
enum auth_request_status status,
const char *data_base64 ATTR_UNUSED,
const char *const *args, void *context)
{
struct authtest_input *input = context;
input->request = NULL;
input->auth_id = auth_client_request_get_id(request);
input->auth_pid = auth_client_request_get_server_pid(request);
input->auth_cookie = input->pool == NULL ? NULL :
p_strdup(input->pool, auth_client_request_get_cookie(request));
if (!io_loop_is_running(current_ioloop))
return;
if (status == 0)
i_fatal("passdb expects SASL continuation");
switch (status) {
case AUTH_REQUEST_STATUS_ABORT:
i_unreached();
case AUTH_REQUEST_STATUS_INTERNAL_FAIL:
case AUTH_REQUEST_STATUS_FAIL:
printf("passdb: %s auth failed\n", input->username);
break;
case AUTH_REQUEST_STATUS_CONTINUE:
printf("passdb: %s auth unexpectedly requested continuation\n",
input->username);
break;
case AUTH_REQUEST_STATUS_OK:
input->success = TRUE;
printf("passdb: %s auth succeeded\n", input->username);
break;
}
if (args != NULL && *args != NULL) {
printf("extra fields:\n");
for (; *args != NULL; args++)
printf(" %s\n", *args);
}
io_loop_stop(current_ioloop);
}
static void auth_connected(struct auth_client *client,
bool connected, void *context)
{
struct event *event_auth;
struct authtest_input *input = context;
struct auth_request_info info;
string_t *init_resp, *base64_resp;
if (!connected)
i_fatal("Couldn't connect to auth socket");
event_auth = event_create(NULL);
event_add_category(event_auth, &event_category_auth);
init_resp = t_str_new(128);
str_append(init_resp, input->username);
str_append_c(init_resp, '\0');
if (input->master_user != NULL)
str_append(init_resp, input->master_user);
else
str_append(init_resp, input->username);
str_append_c(init_resp, '\0');
str_append(init_resp, input->password);
base64_resp = t_str_new(128);
base64_encode(str_data(init_resp), str_len(init_resp), base64_resp);
i_zero(&info);
info.mech = "PLAIN";
info.service = input->info.service;
info.local_ip = input->info.local_ip;
info.local_port = input->info.local_port;
info.remote_ip = input->info.remote_ip;
info.remote_port = input->info.remote_port;
info.initial_resp_base64 = str_c(base64_resp);
if (doveadm_settings->auth_debug ||
event_want_debug_log(event_auth))
info.flags |= AUTH_REQUEST_FLAG_DEBUG;
input->request = auth_client_request_new(client, &info,
auth_callback, input);
event_unref(&event_auth);
}
static void
cmd_auth_input(const char *auth_socket_path, struct authtest_input *input)
{
struct auth_client *client;
if (auth_socket_path == NULL) {
auth_socket_path = t_strconcat(doveadm_settings->base_dir,
"/auth-client", NULL);
}
client = auth_client_init(auth_socket_path, getpid(), FALSE);
auth_client_set_connect_notify(client, auth_connected, input);
if (!auth_client_is_disconnected(client))
io_loop_run(current_ioloop);
auth_client_set_connect_notify(client, NULL, NULL);
auth_client_deinit(&client);
}
static void auth_user_info_parse(struct auth_user_info *info, const char *arg)
{
if (str_begins(arg, "service="))
info->service = arg + 8;
else if (str_begins(arg, "lip=")) {
if (net_addr2ip(arg + 4, &info->local_ip) < 0)
i_fatal("lip: Invalid ip");
} else if (str_begins(arg, "rip=")) {
if (net_addr2ip(arg + 4, &info->remote_ip) < 0)
i_fatal("rip: Invalid ip");
} else if (str_begins(arg, "lport=")) {
if (net_str2port(arg + 6, &info->local_port) < 0)
i_fatal("lport: Invalid port number");
} else if (str_begins(arg, "rport=")) {
if (net_str2port(arg + 6, &info->remote_port) < 0)
i_fatal("rport: Invalid port number");
} else {
i_fatal("Unknown -x argument: %s", arg);
}
}
static void
cmd_user_list(struct auth_master_connection *conn,
const struct authtest_input *input,
char *const *users)
{
struct auth_master_user_list_ctx *ctx;
const char *username, *user_mask = "*";
unsigned int i;
if (users[0] != NULL && users[1] == NULL)
user_mask = users[0];
ctx = auth_master_user_list_init(conn, user_mask, &input->info);
while ((username = auth_master_user_list_next(ctx)) != NULL) {
for (i = 0; users[i] != NULL; i++) {
if (wildcard_match_icase(username, users[i]))
break;
}
if (users[i] != NULL)
printf("%s\n", username);
}
if (auth_master_user_list_deinit(&ctx) < 0)
i_fatal("user listing failed");
}
static void cmd_auth_cache_flush(int argc, char *argv[])
{
const char *master_socket_path = NULL;
struct auth_master_connection *conn;
unsigned int count;
int c;
while ((c = getopt(argc, argv, "a:")) > 0) {
switch (c) {
case 'a':
master_socket_path = optarg;
break;
default:
auth_cmd_help(cmd_auth_cache_flush);
}
}
argv += optind;
if (master_socket_path == NULL) {
master_socket_path = t_strconcat(doveadm_settings->base_dir,
"/auth-master", NULL);
}
conn = doveadm_get_auth_master_conn(master_socket_path);
if (auth_master_cache_flush(conn, (void *)argv, &count) < 0) {
i_error("Cache flush failed");
doveadm_exit_code = EX_TEMPFAIL;
} else {
printf("%u cache entries flushed\n", count);
}
auth_master_deinit(&conn);
}
static void authtest_input_init(struct authtest_input *input)
{
i_zero(input);
input->info.service = "doveadm";
input->info.debug = doveadm_settings->auth_debug;
}
static void cmd_auth_test(int argc, char *argv[])
{
const char *auth_socket_path = NULL;
struct authtest_input input;
int c;
authtest_input_init(&input);
while ((c = getopt(argc, argv, "a:M:x:")) > 0) {
switch (c) {
case 'a':
auth_socket_path = optarg;
break;
case 'M':
input.master_user = optarg;
break;
case 'x':
auth_user_info_parse(&input.info, optarg);
break;
default:
auth_cmd_help(cmd_auth_test);
}
}
if (optind == argc)
auth_cmd_help(cmd_auth_test);
input.username = argv[optind++];
input.password = argv[optind] != NULL ? argv[optind++] :
t_askpass("Password: ");
if (argv[optind] != NULL)
i_fatal("Unexpected parameter: %s", argv[optind]);
cmd_auth_input(auth_socket_path, &input);
if (!input.success)
doveadm_exit_code = EX_NOPERM;
}
static void
master_auth_callback(const char *const *auth_args,
const char *errormsg, void *context)
{
struct authtest_input *input = context;
unsigned int i;
io_loop_stop(current_ioloop);
if (errormsg != NULL) {
i_error("userdb lookup failed: %s", errormsg);
return;
}
printf("userdb extra fields:\n");
for (i = 0; auth_args[i] != NULL; i++)
printf(" %s\n", auth_args[i]);
input->success = TRUE;
}
static void
cmd_auth_master_input(const char *auth_master_socket_path,
struct authtest_input *input)
{
struct master_login_auth *master_auth;
struct master_auth_request master_auth_req;
buffer_t buf;
i_zero(&master_auth_req);
master_auth_req.tag = 1;
master_auth_req.auth_pid = input->auth_pid;
master_auth_req.auth_id = input->auth_id;
master_auth_req.client_pid = getpid();
master_auth_req.local_ip = input->info.local_ip;
master_auth_req.remote_ip = input->info.remote_ip;
buffer_create_from_data(&buf, master_auth_req.cookie,
sizeof(master_auth_req.cookie));
if (strlen(input->auth_cookie) == MASTER_AUTH_COOKIE_SIZE*2)
(void)hex_to_binary(input->auth_cookie, &buf);
input->success = FALSE;
master_auth = master_login_auth_init(auth_master_socket_path, FALSE);
io_loop_set_running(current_ioloop);
master_login_auth_request(master_auth, &master_auth_req,
master_auth_callback, input);
if (io_loop_is_running(current_ioloop))
io_loop_run(current_ioloop);
master_login_auth_deinit(&master_auth);
}
static void cmd_auth_login(int argc, char *argv[])
{
const char *auth_login_socket_path, *auth_master_socket_path;
struct auth_client *auth_client;
struct authtest_input input;
int c;
authtest_input_init(&input);
auth_login_socket_path = t_strconcat(doveadm_settings->base_dir,
"/auth-login", NULL);
auth_master_socket_path = t_strconcat(doveadm_settings->base_dir,
"/auth-master", NULL);
while ((c = getopt(argc, argv, "a:m:M:x:")) > 0) {
switch (c) {
case 'a':
auth_login_socket_path = optarg;
break;
case 'm':
auth_master_socket_path = optarg;
break;
case 'M':
input.master_user = optarg;
break;
case 'x':
auth_user_info_parse(&input.info, optarg);
break;
default:
auth_cmd_help(cmd_auth_login);
}
}
if (optind == argc)
auth_cmd_help(cmd_auth_login);
input.pool = pool_alloconly_create("auth login", 256);
input.username = argv[optind++];
input.password = argv[optind] != NULL ? argv[optind++] :
t_askpass("Password: ");
if (argv[optind] != NULL)
i_fatal("Unexpected parameter: %s", argv[optind]);
/* authenticate */
auth_client = auth_client_init(auth_login_socket_path, getpid(), FALSE);
auth_client_set_connect_notify(auth_client, auth_connected, &input);
if (!auth_client_is_disconnected(auth_client))
io_loop_run(current_ioloop);
auth_client_set_connect_notify(auth_client, NULL, NULL);
/* finish login with userdb lookup */
if (input.success)
cmd_auth_master_input(auth_master_socket_path, &input);
if (!input.success)
doveadm_exit_code = EX_NOPERM;
auth_client_deinit(&auth_client);
pool_unref(&input.pool);
}
static void cmd_auth_lookup(int argc, char *argv[])
{
const char *auth_socket_path = doveadm_settings->auth_socket_path;
struct auth_master_connection *conn;
struct authtest_input input;
const char *show_field = NULL;
bool first = TRUE;
int c, ret;
authtest_input_init(&input);
while ((c = getopt(argc, argv, "a:f:x:")) > 0) {
switch (c) {
case 'a':
auth_socket_path = optarg;
break;
case 'f':
show_field = optarg;
break;
case 'x':
auth_user_info_parse(&input.info, optarg);
break;
default:
auth_cmd_help(cmd_auth_lookup);
}
}
if (optind == argc)
auth_cmd_help(cmd_auth_lookup);
conn = doveadm_get_auth_master_conn(auth_socket_path);
while ((input.username = argv[optind++]) != NULL) {
if (first)
first = FALSE;
else
putchar('\n');
ret = cmd_user_input(conn, &input, show_field, FALSE);
switch (ret) {
case -1:
doveadm_exit_code = EX_TEMPFAIL;
break;
case 0:
doveadm_exit_code = EX_NOUSER;
break;
}
}
auth_master_deinit(&conn);
}
static void cmd_user_mail_input_field(const char *key, const char *value,
const char *show_field)
{
if (show_field == NULL) {
doveadm_print(key);
doveadm_print(value);
} else if (strcmp(show_field, key) == 0) {
printf("%s\n", value);
}
}
static void
cmd_user_mail_print_fields(const struct authtest_input *input,
struct mail_user *user,
const char *const *userdb_fields,
const char *show_field)
{
const struct mail_storage_settings *mail_set;
const char *key, *value;
unsigned int i;
if (strcmp(input->username, user->username) != 0)
cmd_user_mail_input_field("user", user->username, show_field);
cmd_user_mail_input_field("uid", user->set->mail_uid, show_field);
cmd_user_mail_input_field("gid", user->set->mail_gid, show_field);
cmd_user_mail_input_field("home", user->set->mail_home, show_field);
mail_set = mail_user_set_get_storage_set(user);
cmd_user_mail_input_field("mail", mail_set->mail_location, show_field);
if (userdb_fields != NULL) {
for (i = 0; userdb_fields[i] != NULL; i++) {
value = strchr(userdb_fields[i], '=');
if (value != NULL)
key = t_strdup_until(userdb_fields[i], value++);
else {
key = userdb_fields[i];
value = "";
}
if (strcmp(key, "uid") != 0 &&
strcmp(key, "gid") != 0 &&
strcmp(key, "home") != 0 &&
strcmp(key, "mail") != 0)
cmd_user_mail_input_field(key, value, show_field);
}
}
}
static int
cmd_user_mail_input(struct mail_storage_service_ctx *storage_service,
const struct authtest_input *input,
const char *show_field, const char *expand_field)
{
struct mail_storage_service_input service_input;
struct mail_storage_service_user *service_user;
struct mail_user *user;
const char *error, *const *userdb_fields;
pool_t pool;
int ret;
i_zero(&service_input);
service_input.module = "mail";
service_input.service = input->info.service;
service_input.username = input->username;
service_input.local_ip = input->info.local_ip;
service_input.local_port = input->info.local_port;
service_input.remote_ip = input->info.remote_ip;
service_input.remote_port = input->info.remote_port;
service_input.debug = input->info.debug;
pool = pool_alloconly_create("userdb fields", 1024);
mail_storage_service_save_userdb_fields(storage_service, pool,
&userdb_fields);
if ((ret = mail_storage_service_lookup_next(storage_service, &service_input,
&service_user, &user,
&error)) <= 0) {
pool_unref(&pool);
if (ret < 0)
return -1;
fprintf(show_field == NULL && expand_field == NULL ? stdout : stderr,
"\nuserdb lookup: user %s doesn't exist\n",
input->username);
return 0;
}
if (expand_field == NULL)
cmd_user_mail_print_fields(input, user, userdb_fields, show_field);
else {
string_t *str = t_str_new(128);
if (var_expand_with_funcs(str, expand_field,
mail_user_var_expand_table(user),
mail_user_var_expand_func_table, user,
&error) <= 0) {
i_error("Failed to expand %s: %s", expand_field, error);
} else {
printf("%s\n", str_c(str));
}
}
mail_user_unref(&user);
mail_storage_service_user_unref(&service_user);
pool_unref(&pool);
return 1;
}
static void cmd_user(int argc, char *argv[])
{
const char *auth_socket_path = doveadm_settings->auth_socket_path;
struct auth_master_connection *conn;
struct authtest_input input;
const char *show_field = NULL, *expand_field = NULL;
struct mail_storage_service_ctx *storage_service = NULL;
unsigned int i;
bool have_wildcards, userdb_only = FALSE, first = TRUE;
int c, ret;
authtest_input_init(&input);
while ((c = getopt(argc, argv, "a:e:f:ux:")) > 0) {
switch (c) {
case 'a':
auth_socket_path = optarg;
break;
case 'e':
expand_field = optarg;
break;
case 'f':
show_field = optarg;
break;
case 'u':
userdb_only = TRUE;
break;
case 'x':
auth_user_info_parse(&input.info, optarg);
break;
default:
auth_cmd_help(cmd_user);
}
}
if (expand_field != NULL && userdb_only) {
i_error("-e can't be used with -u");
doveadm_exit_code = EX_USAGE;
return;
}
if (expand_field != NULL && show_field != NULL) {
i_error("-e can't be used with -f");
doveadm_exit_code = EX_USAGE;
return;
}
if (optind == argc)
auth_cmd_help(cmd_user);
conn = doveadm_get_auth_master_conn(auth_socket_path);
have_wildcards = FALSE;
for (i = optind; argv[i] != NULL; i++) {
if (strchr(argv[i], '*') != NULL ||
strchr(argv[i], '?') != NULL) {
have_wildcards = TRUE;
break;
}
}
if (have_wildcards) {
cmd_user_list(conn, &input, argv + optind);
auth_master_deinit(&conn);
return;
}
if (!userdb_only) {
storage_service = mail_storage_service_init(master_service, NULL,
MAIL_STORAGE_SERVICE_FLAG_USERDB_LOOKUP |
MAIL_STORAGE_SERVICE_FLAG_NO_CHDIR |
MAIL_STORAGE_SERVICE_FLAG_NO_LOG_INIT |
MAIL_STORAGE_SERVICE_FLAG_NO_PLUGINS |
MAIL_STORAGE_SERVICE_FLAG_NO_NAMESPACES |
MAIL_STORAGE_SERVICE_FLAG_NO_RESTRICT_ACCESS);
mail_storage_service_set_auth_conn(storage_service, conn);
conn = NULL;
if (show_field == NULL && expand_field == NULL) {
doveadm_print_init(DOVEADM_PRINT_TYPE_TAB);
doveadm_print_header_simple("field");
doveadm_print_header_simple("value");
}
}
while ((input.username = argv[optind++]) != NULL) {
if (first)
first = FALSE;
else
putchar('\n');
ret = !userdb_only ?
cmd_user_mail_input(storage_service, &input, show_field, expand_field) :
cmd_user_input(conn, &input, show_field, TRUE);
switch (ret) {
case -1:
doveadm_exit_code = EX_TEMPFAIL;
break;
case 0:
doveadm_exit_code = EX_NOUSER;
break;
}
}
if (storage_service != NULL)
mail_storage_service_deinit(&storage_service);
if (conn != NULL)
auth_master_deinit(&conn);
}
struct doveadm_cmd doveadm_cmd_auth[] = {
{ cmd_auth_test, "auth test",
"[-a <auth socket path>] [-x <auth info>] [-M <master user>] <user> [<password>]" },
{ cmd_auth_login, "auth login",
"[-a <auth-login socket path>] [-m <auth-master socket path>] [-x <auth info>] [-M <master user>] <user> [<password>]" },
{ cmd_auth_lookup, "auth lookup",
"[-a <userdb socket path>] [-x <auth info>] [-f field] <user> [...]" },
{ cmd_auth_cache_flush, "auth cache flush",
"[-a <master socket path>] [<user> [...]]" },
{ cmd_user, "user",
"[-a <userdb socket path>] [-x <auth info>] [-f field] [-e <value>] [-u] <user mask> [...]" }
};
static void auth_cmd_help(doveadm_command_t *cmd)
{
unsigned int i;
for (i = 0; i < N_ELEMENTS(doveadm_cmd_auth); i++) {
if (doveadm_cmd_auth[i].cmd == cmd)
help(&doveadm_cmd_auth[i]);
}
i_unreached();
}
void doveadm_register_auth_commands(void)
{
unsigned int i;
for (i = 0; i < N_ELEMENTS(doveadm_cmd_auth); i++)
doveadm_register_cmd(&doveadm_cmd_auth[i]);
}