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/* $OpenBSD: output.c,v 1.19 2020/12/09 11:29:04 claudio Exp $ */
/*
* Copyright (c) 2019 Theo de Raadt <deraadt@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/stat.h>
#include <err.h>
#include <fcntl.h>
#include <unistd.h>
#include <netdb.h>
#include <signal.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include <time.h>
#include "extern.h"
char *outputdir;
int outformats;
static char output_tmpname[PATH_MAX];
static char output_name[PATH_MAX];
static const struct outputs {
int format;
char *name;
int (*fn)(FILE *, struct vrp_tree *, struct stats *);
} outputs[] = {
{ FORMAT_OPENBGPD, "openbgpd", output_bgpd },
{ FORMAT_BIRD, "bird1v4", output_bird1v4 },
{ FORMAT_BIRD, "bird1v6", output_bird1v6 },
{ FORMAT_BIRD, "bird", output_bird2 },
{ FORMAT_CSV, "csv", output_csv },
{ FORMAT_JSON, "json", output_json },
{ 0, NULL }
};
static FILE *output_createtmp(char *);
static void output_cleantmp(void);
static int output_finish(FILE *);
static void sig_handler(int);
static void set_signal_handler(void);
int
outputfiles(struct vrp_tree *v, struct stats *st)
{
int i, rc = 0;
atexit(output_cleantmp);
set_signal_handler();
for (i = 0; outputs[i].name; i++) {
FILE *fout;
if (!(outformats & outputs[i].format))
continue;
fout = output_createtmp(outputs[i].name);
if (fout == NULL) {
warn("cannot create %s", outputs[i].name);
rc = 1;
continue;
}
if ((*outputs[i].fn)(fout, v, st) != 0) {
warn("output for %s format failed", outputs[i].name);
fclose(fout);
output_cleantmp();
rc = 1;
continue;
}
if (output_finish(fout) != 0) {
warn("finish for %s format failed", outputs[i].name);
output_cleantmp();
rc = 1;
continue;
}
}
return rc;
}
static FILE *
output_createtmp(char *name)
{
FILE *f;
int fd, r;
r = snprintf(output_name, sizeof output_name,
"%s/%s", outputdir, name);
if (r < 0 || r > (int)sizeof(output_name))
err(1, "path too long");
r = snprintf(output_tmpname, sizeof output_tmpname,
"%s.XXXXXXXXXXX", output_name);
if (r < 0 || r > (int)sizeof(output_tmpname))
err(1, "path too long");
fd = mkostemp(output_tmpname, O_CLOEXEC);
if (fd == -1)
err(1, "mkostemp: %s", output_tmpname);
(void) fchmod(fd, 0644);
f = fdopen(fd, "w");
if (f == NULL)
err(1, "fdopen");
return f;
}
static int
output_finish(FILE *out)
{
if (fclose(out) != 0)
return -1;
if (rename(output_tmpname, output_name) == -1)
return -1;
output_tmpname[0] = '\0';
return 0;
}
static void
output_cleantmp(void)
{
if (*output_tmpname)
unlink(output_tmpname);
output_tmpname[0] = '\0';
}
/*
* Signal handler that clears the temporary files.
*/
static void
sig_handler(int sig)
{
output_cleantmp();
_exit(2);
}
/*
* Set signal handler on panic signals.
*/
static void
set_signal_handler(void)
{
struct sigaction sa;
int i, signals[] = {SIGTERM, SIGHUP, SIGINT, SIGUSR1, SIGUSR2,
SIGPIPE, SIGXCPU, SIGXFSZ, 0};
memset(&sa, 0, sizeof(sa));
sigfillset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sa.sa_handler = sig_handler;
for (i = 0; signals[i] != 0; i++) {
if (sigaction(signals[i], &sa, NULL) == -1) {
warn("sigaction(%s)", strsignal(signals[i]));
continue;
}
}
}
int
outputheader(FILE *out, struct stats *st)
{
char hn[NI_MAXHOST], tbuf[80];
struct tm *tp;
time_t t;
time(&t);
setenv("TZ", "UTC", 1);
tp = localtime(&t);
strftime(tbuf, sizeof tbuf, "%a %b %e %H:%M:%S %Z %Y", tp);
gethostname(hn, sizeof hn);
if (fprintf(out,
"# Generated on host %s at %s\n"
"# Processing time %lld seconds (%lld seconds user, %lld seconds system)\n"
"# Route Origin Authorizations: %zu (%zu failed parse, %zu invalid)\n"
"# Certificates: %zu (%zu failed parse, %zu invalid)\n"
"# Trust Anchor Locators: %zu (%s)\n"
"# Manifests: %zu (%zu failed parse, %zu stale)\n"
"# Certificate revocation lists: %zu\n"
"# Ghostbuster records: %zu\n"
"# Repositories: %zu\n"
"# VRP Entries: %zu (%zu unique)\n",
hn, tbuf, (long long)st->elapsed_time.tv_sec,
(long long)st->user_time.tv_sec, (long long)st->system_time.tv_sec,
st->roas, st->roas_fail, st->roas_invalid,
st->certs, st->certs_fail, st->certs_invalid,
st->tals, st->talnames,
st->mfts, st->mfts_fail, st->mfts_stale,
st->crls,
st->gbrs,
st->repos,
st->vrps, st->uniqs) < 0)
return -1;
return 0;
}
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