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This commit is contained in:
Vincent Batts 2025-02-08 09:49:00 -05:00
parent 9f1aba8dd8
commit d77bfd2366
6 changed files with 423 additions and 8 deletions
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12
account.cc Normal file
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#include <iostream>
#include <cmath>
#include <cstdlib>
using namespace std;
#include "account.h"
int main(int argc, char* argv[]) {
Account account(0.0);
return EXIT_SUCCESS;
}

37
account.h Normal file
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/*
* =====================================================================================
* Class: Account
* Description:
* =====================================================================================
*/
class Account
{
public:
/* ==================== LIFECYCLE ======================================= */
//Account (); /* constructor */
//Account ( const Account &other ); /* copy constructor */
Account ( double initial_balance ) : balance(initial_balance) {
}
~Account () { /* destructor */
}
/* ==================== ACCESSORS ======================================= */
/* ==================== MUTATORS ======================================= */
/* ==================== OPERATORS ======================================= */
Account& operator = ( const Account &other ); /* assignment operator */
protected:
/* ==================== DATA MEMBERS ======================================= */
private:
/* ==================== DATA MEMBERS ======================================= */
double balance;
}; /* ----- end of class Account ----- */

252
audisp-example.c Normal file
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/* audisp-example.c --
* Copyright 2012 Red Hat Inc.
* All Rights Reserved.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors:
* Steve Grubb <sgrubb@redhat.com>
*
* This is a sample program to demonstrate several concepts of how to
* write an audispd plugin using libauparse. It can be tested by using a
* file of raw audit records. You can generate the test file like:
*
* ausearch --start today --raw > test.log.
*
* Then you can test this app by: cat test.log | ./audisp-example
*
* It will print things to stdout. In a real program, you wouldn't
* do anything with stdout since that is likely to be pointing to /dev/null.
*
* Excluding some init/destroy items you might need to add to main, the
* event_handler function is the main place that you would modify to do
* things specific to your plugin.
*
* Also, note that for a "real" plugin, you may have to add an internal queue
* to your application. If plugins do any kind of networking or in depth
* processing of incoming events, auditd's internal queue can overflow because
* the socket connecting to the plugin's stdin get backed up. When audit has
* nowhere to put events, the kernel's audit backlog can get filled up.
* If that happens, the backlog_wait_time is consulted by the kernel which
* may have the effect of slowing down the whole system. A good design would be
* to have 2 threads, one watching for inbound events and one doing the
* processing of the events with a configurable queue in between.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <signal.h>
#include <sys/select.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <libaudit.h>
#include <auparse.h>
/* Global Data */
static volatile int stop = 0;
static volatile int hup = 0;
static auparse_state_t *au = NULL;
/* Local declarations */
static void handle_event(auparse_state_t *au,
auparse_cb_event_t cb_event_type, void *user_data);
/*
* SIGTERM handler
*/
static void term_handler(int sig)
{
stop = 1;
}
/*
* SIGHUP handler: re-read config
*/
static void hup_handler(int sig)
{
hup = 1;
}
static void reload_config(void)
{
hup = 0;
/*
* Add your code here that re-reads the config file and changes
* how your plugin works.
*/
}
int main(int argc, char *argv[])
{
char tmp[MAX_AUDIT_MESSAGE_LENGTH];
struct sigaction sa;
/* Register sighandlers */
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
/* Set handler for the ones we care about */
sa.sa_handler = term_handler;
sigaction(SIGTERM, &sa, NULL);
sa.sa_handler = hup_handler;
sigaction(SIGHUP, &sa, NULL);
/* Set STDIN non-blocking */
fcntl(0, F_SETFL, O_NONBLOCK);
/* Initialize the auparse library */
au = auparse_init(AUSOURCE_FEED, 0);
if (au == NULL) {
printf("audisp-example is exiting due to auparse init errors");
return -1;
}
auparse_set_eoe_timeout(2);
auparse_add_callback(au, handle_event, NULL, NULL);
do {
fd_set read_mask;
int retval;
int read_size = 1; /* Set to 1 so it's not EOF */
/* Load configuration */
if (hup) {
reload_config();
}
do {
FD_ZERO(&read_mask);
FD_SET(0, &read_mask);
if (auparse_feed_has_data(au)) {
struct timeval tv;
tv.tv_sec = 1;
tv.tv_usec = 0;
retval= select(1, &read_mask, NULL, NULL, &tv);
} else
retval= select(1, &read_mask, NULL, NULL, NULL);
/* If we timed out & have events, shake them loose */
if (retval == 0 && auparse_feed_has_data(au))
auparse_feed_age_events(au);
} while (retval == -1 && errno == EINTR && !hup && !stop);
/* Now the event loop */
if (!stop && !hup && retval > 0) {
while ((read_size = read(0, tmp,
MAX_AUDIT_MESSAGE_LENGTH)) > 0) {
auparse_feed(au, tmp, read_size);
}
}
if (read_size == 0) /* EOF */
break;
} while (stop == 0);
/* Flush any accumulated events from queue */
auparse_flush_feed(au);
auparse_destroy(au);
if (stop)
printf("audisp-example is exiting on stop request\n");
else
printf("audisp-example is exiting on stdin EOF\n");
return 0;
}
/* This function shows how to dump a whole event by iterating over records */
static void dump_whole_event(auparse_state_t *au)
{
auparse_first_record(au);
do {
printf("%s\n", auparse_get_record_text(au));
} while (auparse_next_record(au) > 0);
printf("\n");
}
/* This function shows how to dump a whole record's text */
static void dump_whole_record(auparse_state_t *au)
{
printf("%s: %s\n", audit_msg_type_to_name(auparse_get_type(au)),
auparse_get_record_text(au));
printf("\n");
}
/* This function shows how to iterate through the fields of a record
* and print its name and raw value and interpreted value. */
static void dump_fields_of_record(auparse_state_t *au)
{
printf("record type %d(%s) has %d fields\n", auparse_get_type(au),
audit_msg_type_to_name(auparse_get_type(au)),
auparse_get_num_fields(au));
printf("line=%d file=%s\n", auparse_get_line_number(au),
auparse_get_filename(au) ? auparse_get_filename(au) : "stdin");
const au_event_t *e = auparse_get_timestamp(au);
if (e == NULL) {
printf("Error getting timestamp - aborting\n");
return;
}
/* Note that e->sec can be treated as time_t data if you want
* something a little more readable */
printf("event time: %u.%u:%lu, host=%s\n", (unsigned)e->sec,
e->milli, e->serial, e->host ? e->host : "?");
auparse_first_field(au);
do {
printf("field: %s=%s (%s)\n",
auparse_get_field_name(au),
auparse_get_field_str(au),
auparse_interpret_field(au));
} while (auparse_next_field(au) > 0);
printf("\n");
}
/* This function receives a single complete event at a time from the auparse
* library. This is where the main analysis code would be added. */
static void handle_event(auparse_state_t *au,
auparse_cb_event_t cb_event_type, void *user_data)
{
int type, num=0;
if (cb_event_type != AUPARSE_CB_EVENT_READY)
return;
/* Loop through the records in the event looking for one to process.
We use physical record number because we may search around and
move the cursor accidentally skipping a record. */
while (auparse_goto_record_num(au, num) > 0) {
type = auparse_get_type(au);
/* Now we can branch based on what record type we find.
This is just a few suggestions, but it could be anything. */
switch (type) {
case AUDIT_AVC:
dump_fields_of_record(au);
break;
case AUDIT_SYSCALL:
dump_whole_record(au);
break;
case AUDIT_USER_LOGIN:
break;
case AUDIT_ANOM_ABEND:
break;
case AUDIT_MAC_STATUS:
dump_whole_event(au);
break;
default:
break;
}
num++;
}
}

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main.c
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@ -5,21 +5,32 @@
enum
DNA_PROTEINS
{
DNA_PROTIEN_A = 0x01,
DNA_PROTIEN_T = 0x02,
DNA_PROTIEN_G = 0x04,
DNA_PROTIEN_C = 0x08,
DNA_PROTIEN_A = 1,
DNA_PROTIEN_T = 2,
DNA_PROTIEN_G = 4,
DNA_PROTIEN_C = 8,
};
void
loop()
{
for (int i = 0 ; i < 8; i++) {
printf("i: %d\n", i);
}
}
int
main()
{
signed char c;
short int i;
loop();
}
void
nope()
{
signed char c; // 1 byte (8 bits)
printf("sizeof(c) %d\n", sizeof(c));
printf("sizeof(i) %d\n", sizeof(i));
printf("c: %b || %d\n", c, c);
printf("A: %b\n", DNA_PROTIEN_A);
@ -29,6 +40,23 @@ main()
c |= DNA_PROTIEN_A;
printf("c: %b || %d\n", c, c);
c |= DNA_PROTIEN_T;
printf("c: %b || %d\n", c, c);
c |= DNA_PROTIEN_G;
printf("c: %b || %d\n", c, c);
c |= DNA_PROTIEN_C;
printf("c: %b || %d\n", c, c);
c |= 16 ; // upper 4 bits
printf("c: %b || %d\n", c, c);
c |= 32; // upper 4 bits
printf("c: %b || %d\n", c, c);
c |= 64; // upper 4 bits
printf("c: %b || %d\n", c, c);
c |= 128; // too far
printf("c: %b || %d\n", c, c);
c |= 256; // too far
printf("c: %b || %d\n", c, c);
c |= 512; // too far
printf("c: %b || %d\n", c, c);
}

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read++.cc Normal file
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#include <iostream>
#include <vector>
#include <unordered_set>
using namespace std;
vector<string> collect_lines(istream& is)
{
unordered_set<string> s;
for (string line; getline(is, line); )
s.insert(line);
return vector<string>(s.begin(), s.end());
}
int main() {
auto lines = collect_lines(cin);
for (const string& line : lines)
cout << line << endl;
try {
}
return 0;
}

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read.c Normal file
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#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
int
main(void)
{
FILE * fp;
char * line = NULL;
size_t len = 0;
ssize_t read;
size_t num_lines;
size_t max_len;
fp = fopen("./genome_VINCENT_BATTS_v5_Full_20240403215609.txt", "r");
if (fp == NULL) {
exit(EXIT_FAILURE);
}
while ((read = getline(&line, &len, fp)) != -1) {
printf("Read line length: %zu:\n", read);
if (read > 0) {
if (line[0] == '#') {
printf("skipping a comment line ...\n");
continue;
}
if (read > max_len) {
max_len = read;
}
num_lines++;
}
//printf("%s", line);
}
printf("num_lines: %zu\n", num_lines);
printf("max_len: %zu\n", max_len);
char **arr[num_lines];
num_lines = 0;
while ((read = getline(&line, &len, fp)) != -1) {
printf("Read line length: %zu:\n", read);
if (read > 0) {
if (line[0] == '#') {
continue;
}
arr[num_lines] = &line;
num_lines++;
}
}
int num;
printf("enter a number: ");
scanf("%d", &num);
fclose(fp);
if (line) {
free(line);
}
exit(EXIT_SUCCESS);
}