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      1 /*
      2  * verify.h
      3  *
      4  * Copyright (c) 2020, NLnet Labs. All rights reserved.
      5  *
      6  * See LICENSE for the license.
      7  */
      8 #ifndef VERIFY_H
      9 #define VERIFY_H
     10 
     11 #ifndef USE_MINI_EVENT
     12 #  ifdef HAVE_EVENT_H
     13 #    include <event.h>
     14 #  else
     15 #    include <event2/event.h>
     16 #    include "event2/event_struct.h"
     17 #    include "event2/event_compat.h"
     18 #  endif
     19 #else
     20 #  include "mini_event.h"
     21 #endif
     22 
     23 /*
     24  * Track position in zone to feed verifier more data as the input descriptor
     25  * becomes available.
     26  */
     27 struct verifier_zone_feed {
     28 	FILE *fh;
     29 	struct event event;
     30 	zone_rr_iter_type rriter;
     31 	struct state_pretty_rr *rrprinter;
     32 	struct region *region;
     33 	struct buffer *buffer;
     34 };
     35 
     36 /* 40 is (estimated) space already used on each logline.
     37  * (time, pid, priority, etc)
     38  */
     39 #define LOGLINELEN (MAXSYSLOGMSGLEN-40)
     40 
     41 #define LOGBUFSIZE (LOGLINELEN * 2)
     42 
     43 /*
     44  * STDOUT and STDERR are logged per line. Lines that exceed LOGLINELEN, are
     45  * split over multiple entries. Line breaks are indicated with "..." in the log
     46  * before and after the break.
     47  */
     48 struct verifier_stream {
     49 	int fd;
     50 	struct event event;
     51 	int priority;
     52 	int cut;
     53 	char buf[LOGBUFSIZE+1];
     54 	size_t cnt;
     55 	size_t off;
     56 };
     57 
     58 struct verifier {
     59 	struct nsd *nsd;
     60 	struct zone *zone;
     61 	pid_t pid;
     62 	int was_ok;
     63 	struct timeval timeout;
     64 	struct event timeout_event;
     65 	struct verifier_zone_feed zone_feed;
     66 	struct verifier_stream output_stream;
     67 	struct verifier_stream error_stream;
     68 };
     69 
     70 struct zone *verify_next_zone(struct nsd *nsd, struct zone *zone);
     71 
     72 void verify_zone(struct nsd *nsd, struct zone *zone);
     73 
     74 void verify_handle_signal(int sig, short event, void *arg);
     75 
     76 void verify_handle_exit(int fd, short event, void *arg);
     77 
     78 void verify_handle_command(int fd, short event, void *arg);
     79 
     80 #endif /* VERIFY_H */
     81