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#include <dnswire/reader.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include "print_dnstap.c"
int main(int argc, const char* argv[])
{
if (argc < 2) {
fprintf(stderr, "usage: reader <file>\n");
return 1;
}
/*
* First we open the given file and read all of the content.
*/
FILE* fp = fopen(argv[1], "r");
if (!fp) {
fprintf(stderr, "Unable to open %s: %s\n", argv[1], strerror(errno));
return 1;
}
/*
* We now initialize the reader and check that it can allocate the
* buffers it needs.
*/
struct dnswire_reader reader;
int done = 0;
if (dnswire_reader_init(&reader) != dnswire_ok) {
fprintf(stderr, "Unable to initialize dnswire reader\n");
return 1;
}
/*
* We now loop until we have a DNSTAP message, the stream was stopped
* or we got an error.
*/
while (!done) {
switch (dnswire_reader_fread(&reader, fp)) {
case dnswire_have_dnstap:
print_dnstap(dnswire_reader_dnstap(reader));
break;
case dnswire_again:
case dnswire_need_more:
break;
case dnswire_endofdata:
done = 1;
break;
default:
fprintf(stderr, "dnswire_reader_fread() error\n");
done = 1;
}
}
dnswire_reader_destroy(reader);
fclose(fp);
return 0;
}
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