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/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */
#include "auth-common.h"
#include "str.h"
#include "auth-worker-server.h"
#include "userdb.h"
#include "userdb-blocking.h"
struct blocking_userdb_iterate_context {
struct userdb_iterate_context ctx;
struct auth_worker_connection *conn;
bool next;
bool destroyed;
};
static bool user_callback(struct auth_worker_connection *conn ATTR_UNUSED,
const char *reply, void *context)
{
struct auth_request *request = context;
enum userdb_result result;
const char *username, *args;
if (str_begins(reply, "FAIL\t")) {
result = USERDB_RESULT_INTERNAL_FAILURE;
args = reply + 5;
} else if (str_begins(reply, "NOTFOUND\t")) {
result = USERDB_RESULT_USER_UNKNOWN;
args = reply + 9;
} else if (str_begins(reply, "OK\t")) {
result = USERDB_RESULT_OK;
username = reply + 3;
args = strchr(username, '\t');
if (args == NULL)
args = "";
else
username = t_strdup_until(username, args++);
if (username[0] != '\0' &&
strcmp(request->fields.user, username) != 0) {
auth_request_set_username_forced(request, username);
request->user_changed_by_lookup = TRUE;
}
} else {
result = USERDB_RESULT_INTERNAL_FAILURE;
e_error(authdb_event(request),
"BUG: auth-worker sent invalid user reply");
args = "";
}
if (*args != '\0') {
auth_fields_import(request->fields.userdb_reply, args, 0);
if (auth_fields_exists(request->fields.userdb_reply, "tempfail"))
request->userdb_lookup_tempfailed = TRUE;
}
auth_request_userdb_callback(result, request);
auth_request_unref(&request);
return TRUE;
}
void userdb_blocking_lookup(struct auth_request *request)
{
string_t *str;
str = t_str_new(128);
str_printfa(str, "USER\t%u\t", request->userdb->userdb->id);
auth_request_export(request, str);
auth_request_ref(request);
auth_worker_call(request->pool, request->fields.user,
str_c(str), user_callback, request);
}
static bool iter_callback(struct auth_worker_connection *conn,
const char *reply, void *context)
{
struct blocking_userdb_iterate_context *ctx = context;
ctx->conn = conn;
if (str_begins(reply, "*\t")) {
if (ctx->destroyed)
return TRUE;
ctx->next = FALSE;
ctx->ctx.callback(reply + 2, ctx->ctx.context);
return ctx->next || ctx->destroyed;
}
if (strcmp(reply, "OK") != 0)
ctx->ctx.failed = TRUE;
if (!ctx->destroyed)
ctx->ctx.callback(NULL, ctx->ctx.context);
auth_request_unref(&ctx->ctx.auth_request);
return TRUE;
}
struct userdb_iterate_context *
userdb_blocking_iter_init(struct auth_request *request,
userdb_iter_callback_t *callback, void *context)
{
struct blocking_userdb_iterate_context *ctx;
string_t *str;
str = t_str_new(128);
str_printfa(str, "LIST\t%u\t", request->userdb->userdb->id);
auth_request_export(request, str);
ctx = p_new(request->pool, struct blocking_userdb_iterate_context, 1);
ctx->ctx.auth_request = request;
ctx->ctx.callback = callback;
ctx->ctx.context = context;
auth_request_ref(request);
auth_worker_call(request->pool, "*",
str_c(str), iter_callback, ctx);
return &ctx->ctx;
}
void userdb_blocking_iter_next(struct userdb_iterate_context *_ctx)
{
struct blocking_userdb_iterate_context *ctx =
(struct blocking_userdb_iterate_context *)_ctx;
i_assert(ctx->conn != NULL);
ctx->next = TRUE;
auth_worker_server_resume_input(ctx->conn);
}
int userdb_blocking_iter_deinit(struct userdb_iterate_context **_ctx)
{
struct blocking_userdb_iterate_context *ctx =
(struct blocking_userdb_iterate_context *)*_ctx;
int ret = ctx->ctx.failed ? -1 : 0;
*_ctx = NULL;
/* iter_callback() may still be called */
ctx->destroyed = TRUE;
if (ctx->conn != NULL)
auth_worker_server_resume_input(ctx->conn);
return ret;
}
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