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/*
* Copyright (C) 2014-2023 Firejail Authors
*
* This file is part of firejail project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "fnettrace.h"
typedef struct event_t {
struct event_t *next;
char *record;
} Event;
static Event *event = NULL;
static Event *last_event = NULL;
int ev_cnt = 0;
void ev_clear(void) {
ev_cnt = 0;
Event *ev = event;
while (ev) {
Event *next = ev->next;
free(ev->record);
free(ev);
ev = next;
}
event = NULL;
}
void ev_add(char *record) {
assert(record);
// braking recursivity
if (*record == '\0')
return;
char *ptr = strchr(record, '\n');
if (ptr)
*ptr = '\0';
// filter out duplicates
if (event && strcmp(event->record, record) == 0)
return;
Event *ev = malloc(sizeof(Event));
if (!ev)
errExit("malloc");
memset(ev, 0, sizeof(Event));
ev->record = strdup(record);
if (!ev->record)
errExit("strdup");
if (event == NULL) {
event = ev;
last_event = ev;
}
else {
last_event->next = ev;
last_event = ev;
}
ev_cnt++;
// recursivity
if (ptr)
ev_add(++ptr);
}
void ev_print(FILE *fp) {
assert(fp);
Event *ev = event;
while (ev) {
fprintf(fp, " ");
if (strstr(ev->record, "NXDOMAIN")) {
if (fp == stdout)
ansi_red(ev->record);
else
fprintf(fp, "%s", ev->record);
}
else if (strstr(ev->record, "SSH connection")) {
if (fp == stdout)
ansi_red(ev->record);
else
fprintf(fp, "%s", ev->record);
}
else
fprintf(fp, "%s", ev->record);
fprintf(fp, "\n");
ev = ev->next;
}
}
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