/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once

#include <security/pam_modules.h>

#include "sd-bus.h"

void pam_log_setup(void);

int pam_syslog_errno(pam_handle_t *handle, int level, int error, const char *format, ...) _printf_(4,5);

int pam_syslog_pam_error(pam_handle_t *handle, int level, int error, const char *format, ...) _printf_(4,5);

/* Call pam_vsyslog if debug is enabled */
#define pam_debug_syslog(handle, debug, fmt, ...) ({                    \
                        if (debug)                                      \
                                pam_syslog(handle, LOG_DEBUG, fmt, ## __VA_ARGS__); \
                })

static inline int pam_log_oom(pam_handle_t *handle) {
        /* This is like log_oom(), but uses PAM logging */
        return pam_syslog_errno(handle, LOG_ERR, ENOMEM, "Out of memory.");
}

static inline int pam_bus_log_create_error(pam_handle_t *handle, int r) {
        /* This is like bus_log_create_error(), but uses PAM logging */
        return pam_syslog_errno(handle, LOG_ERR, r, "Failed to create bus message: %m");
}

static inline int pam_bus_log_parse_error(pam_handle_t *handle, int r) {
        /* This is like bus_log_parse_error(), but uses PAM logging */
        return pam_syslog_errno(handle, LOG_ERR, r, "Failed to parse bus message: %m");
}

typedef struct PamBusData PamBusData;
void pam_bus_data_disconnectp(PamBusData **d);

/* Use a different module name per different PAM module. They are all loaded in the same namespace, and this
 * helps avoid a clash in the internal data structures of sd-bus. It will be used as key for cache items. */
int pam_acquire_bus_connection(pam_handle_t *handle, const char *module_name, bool debug, sd_bus **ret_bus, PamBusData **ret_bus_data);
int pam_release_bus_connection(pam_handle_t *handle, const char *module_name);
int pam_get_bus_data(pam_handle_t *handle, const char *module_name, PamBusData **ret);

void pam_cleanup_free(pam_handle_t *handle, void *data, int error_status);

int pam_get_item_many_internal(pam_handle_t *handle, ...);

#define pam_get_item_many(handle, ...) pam_get_item_many_internal(handle, __VA_ARGS__, -1)

int pam_prompt_graceful(pam_handle_t *handle, int style, char **ret_response, const char *fmt, ...) _printf_(4,5);