/*
* verify.h
*
* Copyright (c) 2020, NLnet Labs. All rights reserved.
*
* See LICENSE for the license.
*/
#ifndef VERIFY_H
#define VERIFY_H

#ifndef USE_MINI_EVENT
#  ifdef HAVE_EVENT_H
#    include <event.h>
#  else
#    include <event2/event.h>
#    include "event2/event_struct.h"
#    include "event2/event_compat.h"
#  endif
#else
#  include "mini_event.h"
#endif

/*
* Track position in zone to feed verifier more data as the input descriptor
* becomes available.
*/
struct verifier_zone_feed {
       FILE *fh;
       struct event event;
       zone_rr_iter_type rriter;
       struct state_pretty_rr *rrprinter;
       struct region *region;
       struct buffer *buffer;
};

/* 40 is (estimated) space already used on each logline.
* (time, pid, priority, etc)
*/
#define LOGLINELEN (MAXSYSLOGMSGLEN-40)

#define LOGBUFSIZE (LOGLINELEN * 2)

/*
* STDOUT and STDERR are logged per line. Lines that exceed LOGLINELEN, are
* split over multiple entries. Line breaks are indicated with "..." in the log
* before and after the break.
*/
struct verifier_stream {
       int fd;
       struct event event;
       int priority;
       int cut;
       char buf[LOGBUFSIZE+1];
       size_t cnt;
       size_t off;
};

struct verifier {
       struct nsd *nsd;
       struct zone *zone;
       pid_t pid;
       int was_ok;
       struct timeval timeout;
       struct event timeout_event;
       struct verifier_zone_feed zone_feed;
       struct verifier_stream output_stream;
       struct verifier_stream error_stream;
};

struct zone *verify_next_zone(struct nsd *nsd, struct zone *zone);

void verify_zone(struct nsd *nsd, struct zone *zone);

void verify_handle_signal(int sig, short event, void *arg);

void verify_handle_exit(int fd, short event, void *arg);

void verify_handle_command(int fd, short event, void *arg);

#endif /* VERIFY_H */