修改获取公网IP方法，优化配置打印
修改： Makefile 修改： README.md 修改： conf.c 修改： conf.h 修改： denyhosts.sh 修改： libiptc.c 修改： libiptc.h 修改： rhost.c 修改： rhost.conf 修改： rhost.h
This commit is contained in:
parent
a7ff1174c0
commit
9421d1f1eb
2
Makefile
2
Makefile
@ -1,6 +1,6 @@
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CROSS_COMPILE ?=
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CC := $(CROSS_COMPILE)gcc
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CFLAGS += -O2 -g -Wall
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CFLAGS += -Os -g -Wall
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LIB += -lcurl -lip4tc
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OBG = rhost
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12
README.md
12
README.md
@ -3,8 +3,16 @@ ssh防止暴力破解,适用Debian 8、9、11 Centos 7
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支持钉钉告警和邮件告警
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支持第三方QQ邮箱告警
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支持一次运行检测、后台运行检测
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```
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Debian系统请安装libcurl库和libiptc库
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Centos 7系统请安装libcurl库和iptables-devel库，yum install iptables-devel libcurl-devel
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apt install libip4tc-dev libcurl4-openssl-dev (或者libcurl4-gnutls-dev)
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```
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```
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Centos 7系统请安装libcurl库和iptables-devel库
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yum install iptables-devel libcurl-devel
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```
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```
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@ -45,8 +53,6 @@ global {
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DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a"; // 钉钉WEBHOOK
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IS_QQMAIL = 0; // 开启QQ邮箱告警（0关闭，1开启）
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SEND_QQ = "1605227279"; // 发送者QQ
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QQMAIL_KEY = "caczsjchvyibiabe"; // 发送者QQ密钥
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RECV_MAIL = "1605227279"; // 接收者QQ
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}
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```
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22
conf.c
22
conf.c
@ -145,6 +145,12 @@ static void parse_global_module(char *content, conf * conf)
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return;
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}
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if (strcasecmp(var, "PUBLIC_IP") == 0) {
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val_begin_len = val_end - val_begin;
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if (copy_new_mem(val_begin, val_begin_len, &conf->PUBLIC_IP) != 0)
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return;
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}
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content = strchr(lineEnd + 1, '\n');
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}
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}
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@ -206,27 +212,43 @@ void read_conf(char *filename, conf * configure)
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void free_conf(conf * conf)
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{
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if (conf->DAEMON)
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free(conf->DAEMON);
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if (conf->PHONE)
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free(conf->PHONE);
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if (conf->DING_WEBHOOK)
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free(conf->DING_WEBHOOK);
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if (conf->SEND_QQ)
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free(conf->SEND_QQ);
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if (conf->QQMAIL_KEY)
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free(conf->QQMAIL_KEY);
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if (conf->RECV_MAIL)
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free(conf->RECV_MAIL);
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if (conf->PUBLIC_IP)
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free(conf->PUBLIC_IP);
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return;
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}
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void ptintf_conf(conf * conf)
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{
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if (conf->DAEMON)
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printf("%s\n", conf->DAEMON);
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printf("%d\n", conf->TIME);
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printf("%d\n", conf->REFUSE_NUMBER);
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printf("%d\n", conf->IS_MAIL);
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printf("%d\n", conf->IS_DING_WEBHOOK);
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if (conf->PHONE)
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printf("%s\n", conf->PHONE);
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if (conf->DING_WEBHOOK)
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printf("%s\n", conf->DING_WEBHOOK);
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printf("%d\n", conf->IS_QQMAIL);
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if (conf->SEND_QQ)
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printf("%s\n", conf->SEND_QQ);
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if (conf->QQMAIL_KEY)
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printf("%s\n", conf->QQMAIL_KEY);
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if (conf->RECV_MAIL)
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printf("%s\n", conf->RECV_MAIL);
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if (conf->PUBLIC_IP)
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printf("%s\n", conf->PUBLIC_IP);
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}
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3
conf.h
3
conf.h
@ -13,6 +13,9 @@ typedef struct CONF {
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int REFUSE_NUMBER;
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// 获取公网IP Url地址
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char *PUBLIC_IP;
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int IS_MAIL;
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int IS_DING_WEBHOOK;
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@ -9,7 +9,7 @@
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source /etc/profile
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function init() {
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SEND_MAIL=0
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SEND_MAIL=1
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PWD_PATH="/root";
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TIME=`date +"%Y%m%d%H%M"`;
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LOG_FILE="${PWD_PATH}/${TIME}.log";
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@ -28,7 +28,7 @@ function run()
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free -hl &>> ${LOG_FILE}
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echo "System process:" &>> ${LOG_FILE}
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ps -auxwwjf &>> ${LOG_FILE}
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ps -auxwwf &>> ${LOG_FILE}
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echo "Network Connections" &>> ${LOG_FILE}
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netstat -tnulp &>> ${LOG_FILE}
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19
libiptc.c
19
libiptc.c
@ -10,13 +10,12 @@ int x_get_rule(const char *chain, struct xtc_handle *handle, char *ipv4)
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const char *t = iptc_get_target(entry, handle);
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entry_match = (struct ipt_entry_match *)entry->elems;
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//printf("u.user.name: %s\n", entry_match->u.user.name);
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char addr[33];
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memset(addr, 0, 33);
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inet_ntop(AF_INET, &(entry->ip.dst), addr, sizeof(addr));
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char addr[64];
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memset(addr, 0, 64);
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inet_ntop(AF_INET, &(entry->ip.src), addr, sizeof(addr));
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//printf("%s\n", addr);
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//printf("%s\n", t);
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if (0 == strcmp(ipv4, addr) && 0 == strcmp(t, "DROP") && 0 == strcmp(entry_match->u.user.name, "tcp"))
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{
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if (0 == strcmp(ipv4, addr) && 0 == strcmp(t, "DROP") && 0 == strcmp(entry_match->u.user.name, "tcp")) {
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r = 0;
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break;
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}
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@ -35,8 +34,7 @@ int show_all_rule(char *ipv4)
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handle = iptc_init("filter");
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for (chain = iptc_first_chain(handle); chain; chain = iptc_next_chain(handle))
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{
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for (chain = iptc_first_chain(handle); chain; chain = iptc_next_chain(handle)) {
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if (chain != NULL && handle != NULL) {
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iptc_get_policy(chain, &counter, handle);
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}
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@ -70,6 +68,7 @@ static void parse_ports(const char *portstring, u_int16_t * ports)
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ports[0] = buffer[0] ? parse_port(buffer) : 0;
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ports[1] = cp[0] ? parse_port(cp) : 0xFFFF;
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}
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free(buffer);
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}
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@ -99,8 +98,7 @@ struct ipt_entry_match *get_match(const char *sports, const char *dports, unsign
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return match;
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}
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int iptc_add_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, unsigned int src,
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unsigned int dest, const char *srcports, const char *destports, const char *target, const char *dnat_to, const int append)
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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)
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{
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struct xtc_handle *handle;
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struct ipt_entry *chain_entry;
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@ -137,7 +135,7 @@ int iptc_add_rule(const char *table, const char *chain, int protocol, const char
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size = IPT_ALIGN(sizeof(struct ipt_entry_target)) + IPT_ALIGN(sizeof(int));
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entry_target = (struct ipt_entry_target *)calloc(1, size);
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entry_target->u.user.target_size = size;
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strncpy(entry_target->u.user.name, target, IPT_FUNCTION_MAXNAMELEN);
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strncpy(entry_target->u.user.name, target, XT_EXTENSION_MAXNAMELEN);
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}
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if (entry_match) {
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match_size = entry_match->u.match_size;
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@ -200,7 +198,6 @@ int iptc_add_rule(const char *table, const char *chain, int protocol, const char
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return 1;
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}
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if (entry_match)
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free(entry_match);
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free(entry_target);
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@ -18,7 +18,6 @@
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/* Dest port. */
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#define NFC_IP_DST_PT 0x0400
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#ifndef IPT_MIN_ALIGN
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#define IPT_MIN_ALIGN (__alignof__(struct ipt_entry))
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#endif
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@ -30,9 +29,7 @@
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#define IPTC_TARGET_SIZE XT_ALIGN(sizeof(struct ipt_entry_target))
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#define IPTC_FULL_SIZE IPTC_ENTRY_SIZE + IPTC_MATCH_SIZE + IPTC_TARGET_SIZE
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int show_all_rule(char *ipv4);
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int iptc_add_rule(const char *table, const char *chain, int protocol, const char *iniface, const char *outiface, unsigned int src,
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unsigned int dest, const char *srcports, const char *destports, const char *target, const char *dnat_to, const int append);
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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);
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#endif
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234
rhost.c
234
rhost.c
@ -1,11 +1,76 @@
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#include "conf.h"
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#include "rhost.h"
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#include "libiptc.h"
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// 存储公网IP
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char public_ip[BUFFER];
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char *public_ip;
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struct MemoryStruct {
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char *memory;
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size_t size;
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};
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static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
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{
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size_t realsize = size * nmemb;
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struct MemoryStruct *mem = (struct MemoryStruct *)userp;
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// 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
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char *ptr = realloc(mem->memory, mem->size + realsize + 1);
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if (ptr == NULL) {
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/* 内存不足！ */
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printf("not enough memory (realloc returned NULL)\n");
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return 0;
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}
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mem->memory = ptr;
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memcpy(&(mem->memory[mem->size]), contents, realsize);
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mem->size += realsize;
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mem->memory[mem->size] = 0;
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return realsize;
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}
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// 获取公网IP
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static char *GET_PUBLIC_IP(char *URL)
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{
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CURL *curl_handle;
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CURLcode res;
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struct MemoryStruct chunk;
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chunk.memory = malloc(1); /* 将根据上述再分配的需要增长 */
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chunk.size = 0; /* 此时没有数据 */
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curl_global_init(CURL_GLOBAL_ALL);
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/* 初始化curl会话 */
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curl_handle = curl_easy_init();
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/* 指定要获取的URL */
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curl_easy_setopt(curl_handle, CURLOPT_URL, URL);
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/* 将所有数据发送到此函数 */
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//对于同一次阻塞的curl_easy_perform而言，在写完获取的数据之前，会多次调用 WriteMemoryCallback
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curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
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/* 将“chunk”结构传递给回调函数 */
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curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
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curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
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//对于同一次阻塞的curl_easy_perform而言，在写完获取的数据之前，会多次调用 WriteMemoryCallback
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res = curl_easy_perform(curl_handle);
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if (res != CURLE_OK) {
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fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
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} else {
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//printf("%lu bytes retrieved\n", (unsigned long)chunk.size);
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//printf("%s", chunk.memory);
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;
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}
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curl_easy_cleanup(curl_handle);
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curl_global_cleanup();
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return chunk.memory;
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}
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// 检测系统
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int check_system()
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@ -19,70 +84,18 @@ int check_system()
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return UNKNOWN_SYSTEM;
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}
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// 获取公网IP
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char *get_public_ip(char *ip)
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{
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FILE *fp;
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char buff[BUFFER];
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memset(buff, 0, BUFFER);
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if (NULL == (fp = popen("curl members.3322.org/dyndns/getip --silent", "r"))) {
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perror("popen curl");
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}
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while (fgets(buff, BUFFER, fp) != NULL) {
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buff[strlen(buff) - 1] = '\0';
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}
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if (NULL != fp)
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pclose(fp);
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return strcpy(ip, buff);
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}
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// 替换字符串
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int strReplaceAll(char *str, char *sub, char *replace)
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{
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if (NULL == str || NULL == sub || NULL == replace) {
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printf("strReplaceAll\n");
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return 1;
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}
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char *p = NULL;
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char *t = NULL;
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char *q = NULL;
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char *dst = NULL;
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char *src = NULL;
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int str_len = strlen(str);
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int sub_len = strlen(sub);
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int replace_len = strlen(replace);
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p = str;
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while ('\0' != *p) {
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t = str + str_len;
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q = strstr(str, sub);
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if (NULL == q) // 没有子串了直接返回
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break;
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src = q + sub_len; // 源头, 原有sub后的一个字符
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dst = q + replace_len; // 目的，放完replace后的一个字符
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memcpy(dst, src, t - src); // 原有字符串后移，放出空间
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memcpy(q, replace, replace_len); // 将replace字符拷贝进来
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str_len = str_len + replace_len - sub_len;
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p = q + replace_len; // p 下一轮replace后的一个字符
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}
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str[str_len] = '\0'; // 通过'\0'表示结尾
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return 0;
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}
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// 钉钉告警
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int dingding_warning(char *illegal_ip, char *public_ip, conf * conf)
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{
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FILE *fp;
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char temp[64];
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char jsonObj[BUFFER];
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memset(jsonObj, 0, BUFFER);
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memset(temp, 0, 64);
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strcpy(temp, public_ip);
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temp[strlen(public_ip) - 1] = '\0';
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if ((fp = fopen("libcurl_ding.log", "wt+")) == NULL) {
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return 1;
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}
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@ -96,21 +109,19 @@ int dingding_warning(char *illegal_ip, char *public_ip, conf *conf)
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return 1;
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}
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char jsonObj[BUFFER] = "{ \
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#define JSIN "{ \
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\"msgtype\": \"text\", \
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\"text\": { \
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\"content\": \"Alert @PHONE 主机PUBLIC 非法主机IP被封禁！ Warning!\" \
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\"content\": \"Alert @%s 服务器地址:%s，封禁非法入侵主机:%s\" \
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}, \
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\"at\": { \
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\"atMobiles\": [\"PHONE\"], \
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\"atMobiles\": [\"%s\"], \
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\"isAtAll\": false \
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} \
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}";
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}"
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strReplaceAll(jsonObj, "IP", illegal_ip);
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strReplaceAll(jsonObj, "PHONE", conf->PHONE);
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strReplaceAll(jsonObj, "PUBLIC", public_ip);
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//printf("%s\n", jsonObj);
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sprintf(jsonObj, JSIN, conf->PHONE, temp, illegal_ip, conf->PHONE);
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printf("%s\n", jsonObj);
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struct curl_slist *headers = NULL;
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headers = curl_slist_append(headers, "Accept: application/json");
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@ -136,17 +147,20 @@ int dingding_warning(char *illegal_ip, char *public_ip, conf *conf)
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}
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// 邮件告警
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int mail_warning(char *illegal_ip, char *public_ip)
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int mail_warning(char *illegal_ip, char *public_ip, conf * conf)
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{
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FILE *fp = NULL;
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char buff[BUFFER];
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char text[BUFFER] = "echo \"主机:HOST, 禁止IP访问!\" |";
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char text[BUFFER];
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char temp[64];
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memset(buff, 0, BUFFER);
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strReplaceAll(text, "IP", illegal_ip);
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strReplaceAll(text, "HOST", public_ip);
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memset(text, 0, BUFFER);
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memset(temp, 0, 64);
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strcat(text, " mail -s \"System ban IP\" 1605227279@qq.com");
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strcpy(temp, public_ip);
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temp[strlen(public_ip) - 1] = '\0';
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sprintf(text, "echo \"主机:%s, 禁止%s访问\" | mail -s \"System ban IP\" %s", temp, illegal_ip, conf->RECV_MAIL);
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if (NULL == (fp = popen(text, "r"))) {
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||||
perror("popen text");
|
||||
@ -165,20 +179,21 @@ int mail_warning(char *illegal_ip, char *public_ip)
|
||||
// 第三方邮箱告警
|
||||
int QQ_mail_warning(char *illegal_ip, char *public_ip, conf * conf)
|
||||
{
|
||||
|
||||
char string[BUFFER + (sizeof(QQMAIL))];
|
||||
char text[BUFFER] = "主机:HOST, 禁止IP访问";
|
||||
|
||||
strReplaceAll(text, "IP", illegal_ip);
|
||||
strReplaceAll(text, "HOST", public_ip);
|
||||
char text[BUFFER];
|
||||
char temp[32];
|
||||
|
||||
memset(string, 0, BUFFER + (sizeof(QQMAIL)));
|
||||
memset(text, 0, BUFFER);
|
||||
memset(temp, 0, 32);
|
||||
|
||||
sprintf(string, QQMAIL, conf->SEND_QQ, conf->QQMAIL_KEY, conf->RECV_MAIL, text);
|
||||
strcpy(temp, public_ip);
|
||||
temp[strlen(public_ip) - 1] = '\0';
|
||||
|
||||
system(string);
|
||||
sprintf(text, "主机:%s, 禁止%s访问", temp, illegal_ip);
|
||||
sprintf(string, QQMAIL, conf->RECV_MAIL, text);
|
||||
|
||||
return 0;
|
||||
return system(string);
|
||||
}
|
||||
|
||||
// 封禁非法IP
|
||||
@ -250,7 +265,6 @@ int rule(conf *conf)
|
||||
strcat(command, "\"");
|
||||
strcat(command, awk);
|
||||
|
||||
|
||||
if ((fp = popen(command, "r")) == NULL) // 执行命令
|
||||
{
|
||||
perror("popen command");
|
||||
@ -275,7 +289,7 @@ int rule(conf *conf)
|
||||
|
||||
if (conf->IS_MAIL == 1) // 邮件告警
|
||||
{
|
||||
mail_warning(buffer, public_ip);
|
||||
mail_warning(buffer, public_ip, conf);
|
||||
sleep(3);
|
||||
}
|
||||
|
||||
@ -294,9 +308,9 @@ int rule(conf *conf)
|
||||
*/
|
||||
|
||||
// libiptc 库插入规则 iptables -t filter -A INPUT -p tcp -s xxxx -j DROP
|
||||
unsigned int destIp;
|
||||
inet_pton(AF_INET, buffer, &destIp);
|
||||
iptc_add_rule("filter", "INPUT", IPPROTO_TCP, NULL, NULL, 0, destIp, NULL, NULL, "DROP", NULL, 1);
|
||||
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);
|
||||
|
||||
}
|
||||
|
||||
@ -321,24 +335,45 @@ static void sig_child(int signo)
|
||||
return;
|
||||
}
|
||||
|
||||
static int get_executable_path(char *processdir, char *processname, int len)
|
||||
{
|
||||
char *filename;
|
||||
if (readlink("/proc/self/exe", processdir, len) <= 0)
|
||||
return -1;
|
||||
filename = strrchr(processdir, '/');
|
||||
if (filename == NULL)
|
||||
return -1;
|
||||
++filename;
|
||||
strcpy(processname, filename);
|
||||
*filename = '\0';
|
||||
return (int)(filename - processdir);
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[], char **env)
|
||||
{
|
||||
char path[BUFFER] = { 0 };
|
||||
char executable_filename[BUFFER] = { 0 };
|
||||
(void)get_executable_path(path, executable_filename, sizeof(path));
|
||||
|
||||
strcat(executable_filename, ".conf");
|
||||
strcat(path, executable_filename);
|
||||
|
||||
|
||||
conf *conf = (struct CONF *)malloc(sizeof(struct CONF));
|
||||
read_conf("rhost.conf", conf);
|
||||
read_conf(path, conf);
|
||||
//ptintf_conf(conf);
|
||||
|
||||
memset(public_ip, 0, BUFFER);
|
||||
get_public_ip(public_ip);
|
||||
// 新版本获取公网IP
|
||||
public_ip = GET_PUBLIC_IP(conf->PUBLIC_IP);
|
||||
//printf("%s", public_ip);
|
||||
|
||||
signal(SIGCHLD, sig_child); // 创建捕捉子进程退出信号
|
||||
|
||||
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
|
||||
{
|
||||
@ -351,16 +386,13 @@ goto_daemon:
|
||||
|
||||
sleep(conf->TIME);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
} else {
|
||||
rule(conf);
|
||||
}
|
||||
|
||||
|
||||
free_conf(conf);
|
||||
free(conf);
|
||||
free(public_ip);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -2,7 +2,9 @@ global {
|
||||
DAEMON = "off"; // on开启后台运行，off不开启
|
||||
TIME = "60"; // 睡眠时间
|
||||
|
||||
REFUSE_NUMBER = 5; // 拒绝攻击次数
|
||||
PUBLIC_IP = "http://inet-ip.info"; // 获取公网IP
|
||||
|
||||
REFUSE_NUMBER = 3; // 拒绝攻击次数
|
||||
|
||||
IS_MAIL = 0; // 开启邮件告警
|
||||
|
||||
@ -11,7 +13,5 @@ global {
|
||||
DING_WEBHOOK = "https://oapi.dingtalk.com/robot/send?access_token=7f069c672cb878987aa6772cca336740eece4ce36bde12b51b45e9f440e0565a"; // 钉钉WEBHOOK
|
||||
|
||||
IS_QQMAIL = 0; // 开启QQ邮箱告警
|
||||
SEND_QQ = "1605227279"; // 发送者QQ
|
||||
QQMAIL_KEY = "caczsjchvyibiabe"; // 发送者QQ密钥
|
||||
RECV_MAIL = "1605227279"; // 接收者QQ
|
||||
RECV_MAIL = "1605227279@qq.com"; // 接收者QQ
|
||||
}
|
||||
|
||||
5
rhost.h
5
rhost.h
@ -13,7 +13,6 @@
|
||||
#include <sys/types.h>
|
||||
#include <arpa/inet.h>
|
||||
|
||||
|
||||
#define CENTOS_SYSTEM 1
|
||||
#define DEBISN_SYSTEM 2
|
||||
#define UNKNOWN_SYSTEM 3
|
||||
@ -31,12 +30,10 @@
|
||||
#define IPTABLES "`which iptables` -t filter -I INPUT -s %s -j DROP"
|
||||
#define IPTABLES_CHECK "`which iptables` -t filter -C INPUT -s %s -j DROP 2> /dev/null"
|
||||
|
||||
#define QQMAIL "qqMail -l smtp.qq.com -p 25 -f %s -e %s -q NIUYULING -r %s@QQ.COM -n NIUYULING -s \"System ban IP\" -t \"%s\""
|
||||
|
||||
#define QQMAIL "email -r %s -s \"System ban IP\" -t \"%s\""
|
||||
|
||||
extern void read_conf(char *filename, conf * configure);
|
||||
extern void free_conf(conf * conf);
|
||||
extern void ptintf_conf(conf * conf);
|
||||
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user