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http_check

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yzc
2019-12-30 12:41:28 +08:00
commit 0f5c209486
6 changed files with 773 additions and 0 deletions
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1
conflist_business.inf Normal file
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./plug/business/http_check/http_check.inf

7
http_check/Makefile Normal file
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all:
gcc -fPIC -shared src/http_check.c -o http_check.so -levent -lcjson
debug:
gcc -g -fPIC -shared src/http_check.c -o http_check.so -levent -lcjson
clean:
rm *.so *.o -rf

3
http_check/http_check.conf Normal file
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[HTTP]
SERVER_IP=192.168.40.132
SERVER_PORT=10000

5
http_check/http_check.inf Normal file
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[PLUGINFO]
PLUGNAME=HTTP_CHECK
SO_PATH=./plug/business/http_check/http_check.so
INIT_FUNC=http_check_init
DESTROY_FUNC=http_check_destory

293
http_check/src/cJSON.h Normal file
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/*
Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef cJSON__h
#define cJSON__h
#ifdef __cplusplus
extern "C"
{
#endif
#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
#define __WINDOWS__
#endif
#ifdef __WINDOWS__
/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention. For windows you have 3 define options:
CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols
CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default)
CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
For *nix builds that support visibility attribute, you can define similar behavior by
setting default visibility to hidden by adding
-fvisibility=hidden (for gcc)
or
-xldscope=hidden (for sun cc)
to CFLAGS
then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does
*/
#define CJSON_CDECL __cdecl
#define CJSON_STDCALL __stdcall
/* export symbols by default, this is necessary for copy pasting the C and header file */
#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_EXPORT_SYMBOLS
#endif
#if defined(CJSON_HIDE_SYMBOLS)
#define CJSON_PUBLIC(type) type CJSON_STDCALL
#elif defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_PUBLIC(type) __declspec(dllexport) type CJSON_STDCALL
#elif defined(CJSON_IMPORT_SYMBOLS)
#define CJSON_PUBLIC(type) __declspec(dllimport) type CJSON_STDCALL
#endif
#else /* !__WINDOWS__ */
#define CJSON_CDECL
#define CJSON_STDCALL
#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY)
#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type
#else
#define CJSON_PUBLIC(type) type
#endif
#endif
/* project version */
#define CJSON_VERSION_MAJOR 1
#define CJSON_VERSION_MINOR 7
#define CJSON_VERSION_PATCH 12
#include <stddef.h>
/* cJSON Types: */
#define cJSON_Invalid (0)
#define cJSON_False (1 << 0)
#define cJSON_True (1 << 1)
#define cJSON_NULL (1 << 2)
#define cJSON_Number (1 << 3)
#define cJSON_String (1 << 4)
#define cJSON_Array (1 << 5)
#define cJSON_Object (1 << 6)
#define cJSON_Raw (1 << 7) /* raw json */
#define cJSON_IsReference 256
#define cJSON_StringIsConst 512
/* The cJSON structure: */
typedef struct cJSON
{
/* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */
struct cJSON *next;
struct cJSON *prev;
/* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */
struct cJSON *child;
/* The type of the item, as above. */
int type;
/* The item's string, if type==cJSON_String and type == cJSON_Raw */
char *valuestring;
/* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */
int valueint;
/* The item's number, if type==cJSON_Number */
double valuedouble;
/* The item's name string, if this item is the child of, or is in the list of subitems of an object. */
char *string;
} cJSON;
typedef struct cJSON_Hooks
{
/* malloc/free are CDECL on Windows regardless of the default calling convention of the compiler, so ensure the hooks allow passing those functions directly. */
void *(CJSON_CDECL *malloc_fn)(size_t sz);
void (CJSON_CDECL *free_fn)(void *ptr);
} cJSON_Hooks;
typedef int cJSON_bool;
/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them.
* This is to prevent stack overflows. */
#ifndef CJSON_NESTING_LIMIT
#define CJSON_NESTING_LIMIT 1000
#endif
/* Precision of double variables comparison */
#ifndef CJSON_DOUBLE_PRECISION
#define CJSON_DOUBLE_PRECISION .0000000000000001
#endif
/* returns the version of cJSON as a string */
CJSON_PUBLIC(const char*) cJSON_Version(void);
/* Supply malloc, realloc and free functions to cJSON */
CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks);
/* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */
/* Supply a block of JSON, and this returns a cJSON object you can interrogate. */
CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value);
/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */
CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated);
/* Render a cJSON entity to text for transfer/storage. */
CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item);
/* Render a cJSON entity to text for transfer/storage without any formatting. */
CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item);
/* Render a cJSON entity to text using a buffered strategy. prebuffer is a guess at the final size. guessing well reduces reallocation. fmt=0 gives unformatted, =1 gives formatted */
CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt);
/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns 1 on success and 0 on failure. */
/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format);
/* Delete a cJSON entity and all subentities. */
CJSON_PUBLIC(void) cJSON_Delete(cJSON *item);
/* Returns the number of items in an array (or object). */
CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
/* Retrieve item number "index" from array "array". Returns NULL if unsuccessful. */
CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index);
/* Get item "string" from object. Case insensitive. */
CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string);
CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string);
CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string);
/* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
/* Check if the item is a string and return its valuestring */
CJSON_PUBLIC(char *) cJSON_GetStringValue(const cJSON * const item);
/* These functions check the type of an item */
CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item);
/* These calls create a cJSON item of the appropriate type. */
CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean);
CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num);
CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string);
/* raw json */
CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw);
CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);
/* Create a string where valuestring references a string so
* it will not be freed by cJSON_Delete */
CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string);
/* Create an object/array that only references it's elements so
* they will not be freed by cJSON_Delete */
CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON *child);
CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON *child);
/* These utilities create an Array of count items.
* The parameter count cannot be greater than the number of elements in the number array, otherwise array access will be out of bounds.*/
CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char *const *strings, int count);
/* Append item to the specified array/object. */
CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item);
CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
/* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object.
* WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before
* writing to `item->string` */
CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item);
/* Append reference to item to the specified array/object. Use this when you want to add an existing cJSON to a new cJSON, but don't want to corrupt your existing cJSON. */
CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);
/* Remove/Detach items from Arrays/Objects. */
CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which);
CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string);
CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string);
CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string);
/* Update array items. */
CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */
CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement);
CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem);
CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem);
/* Duplicate a cJSON item */
CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse);
/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will
* need to be released. With recurse!=0, it will duplicate any children connected to the item.
* The item->next and ->prev pointers are always zero on return from Duplicate. */
/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal.
* case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */
CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive);
/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from strings.
* The input pointer json cannot point to a read-only address area, such as a string constant,
* but should point to a readable and writable adress area. */
CJSON_PUBLIC(void) cJSON_Minify(char *json);
/* Helper functions for creating and adding items to an object at the same time.
* They return the added item or NULL on failure. */
CJSON_PUBLIC(cJSON*) cJSON_AddNullToObject(cJSON * const object, const char * const name);
CJSON_PUBLIC(cJSON*) cJSON_AddTrueToObject(cJSON * const object, const char * const name);
CJSON_PUBLIC(cJSON*) cJSON_AddFalseToObject(cJSON * const object, const char * const name);
CJSON_PUBLIC(cJSON*) cJSON_AddBoolToObject(cJSON * const object, const char * const name, const cJSON_bool boolean);
CJSON_PUBLIC(cJSON*) cJSON_AddNumberToObject(cJSON * const object, const char * const name, const double number);
CJSON_PUBLIC(cJSON*) cJSON_AddStringToObject(cJSON * const object, const char * const name, const char * const string);
CJSON_PUBLIC(cJSON*) cJSON_AddRawToObject(cJSON * const object, const char * const name, const char * const raw);
CJSON_PUBLIC(cJSON*) cJSON_AddObjectToObject(cJSON * const object, const char * const name);
CJSON_PUBLIC(cJSON*) cJSON_AddArrayToObject(cJSON * const object, const char * const name);
/* When assigning an integer value, it needs to be propagated to valuedouble too. */
#define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number))
/* helper for the cJSON_SetNumberValue macro */
CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number);
#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number))
/* Macro for iterating over an array or object */
#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next)
/* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */
CJSON_PUBLIC(void *) cJSON_malloc(size_t size);
CJSON_PUBLIC(void) cJSON_free(void *object);
#ifdef __cplusplus
}
#endif
#endif

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#include <stdio.h>
#include <stdlib.h>
#include <evhttp.h>
#include <event.h>
#include <string.h>
#include <time.h>
#include <sys/sysinfo.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <linux/rtnetlink.h>
#include <net/if.h>
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#include <assert.h>
#include <printf.h>
#include <signal.h>
#include <dirent.h>
#include <sys/types.h>
//#include "cJSON/cJSON.h"
#include "cJSON.h"
#include "MESA/MESA_prof_load.h"
#include "MESA/stream.h"
#include "MESA/MESA_prof_load.h"
#include "MESA/MESA_handle_logger.h"
#include "MESA/MESA_htable.h"
#include "MESA/MESA_list.h"
#define BUFSIZE 8192
#define MAX_LOG_PATH_LEN 256
#define CPU_START_POS 14 /* stat文件的有效起始行数 */
int g_http_port;
char g_http_address[MAX_LOG_PATH_LEN]="";
//const char *http_check_conf_file = "./conf/http_check/http_check.conf";
const char *http_check_conf_file = "/home/mesasoft/sapp/plug/business/http_check/http_check.conf";
struct route_info
{
u_int dstAddr;
u_int srcAddr;
u_int gateWay;
char ifName[IF_NAMESIZE];
};
//************************************cpu占用********************
// CPU占用率计算：
// 1、读取/proc/pid/stat文件，其中记录了从开机到现在，本进程所占用的CPU时间（单位jiffies）
// 2、然后再读取/proc/stat文件，其中记录了从开机到现在，系统所占用的CPU时间（单位jiffies）
// 3、取两个时间点，这两个时间点的进程耗时差，除以系统耗时差，得到的就是该进程的CPU占用率
//在字符串中寻找第N次空格出现的地方
char *get_items_by_pos(char *buff, unsigned int numb)
{
char *crpos;
int i, ttlen, count;
crpos = buff;
ttlen = strlen(buff);
count = 0;
for (i = 0; i < ttlen; i++)
{
if (' ' == *crpos)
{ /* 以空格为标记符进行识别 */
count++;
if (count == (numb - 1))
{ /* 全部个数都找完了 */
crpos++;
break;
}
}
crpos++;
}
return crpos;
}
//获取当前进程的CPU时间
long get_pro_cpu_time(unsigned int pid)
{
FILE *fd;
char *vpos, buff[1024];
long utime, stime, cutime, cstime;
sprintf(buff, "/proc/%d/stat", pid);
fd = fopen(buff, "r");
assert(fd != NULL);
assert(fgets(buff, sizeof(buff), fd) != NULL);
vpos = get_items_by_pos(buff, CPU_START_POS);
sscanf(vpos, "%ld %ld %ld %ld", &utime, &stime, &cutime, &cstime);
//printf("get_data2:%ld %ld %ld %ld\n", utime, stime, cutime, cstime);
fclose(fd);
return (utime + stime + cutime + cstime);
//return (utime + stime);
}
//获取整个系统的CPU时间
long get_sys_cpu_time(void)
{
FILE *fd;
char name[32], buff[1024];
long user, nice, syst, idle;
fd = fopen("/proc/stat", "r");
assert(fd != NULL);
assert(fgets(buff, sizeof(buff), fd) != NULL);
sscanf(buff, "%s %ld %ld %ld %ld", name, &user, &nice, &syst, &idle);
//printf("get_data1:%s %ld %ld %ld %ld\n", name, user, nice, syst, idle);
fclose(fd);
return (user + nice + syst + idle);
//return (user + syst);
}
//获取进程的CPU使用率
float get_cpu_stat(unsigned int pid)
{
float ratio;
long s_cur_pro_cpu, s_pre_pro_cpu; /* 指定程序的本轮/前轮CPU时间 */
long s_cur_sys_cpu, s_pre_sys_cpu; /* 整个系统的本轮/前轮CPU时间 */
s_pre_pro_cpu = get_pro_cpu_time(pid);
s_pre_sys_cpu = get_sys_cpu_time();
sleep(1);
s_cur_pro_cpu = get_pro_cpu_time(pid);
s_cur_sys_cpu = get_sys_cpu_time();
if ((s_cur_pro_cpu == s_pre_pro_cpu) || (s_cur_sys_cpu == s_pre_sys_cpu) || (s_cur_pro_cpu == 0) || (s_cur_sys_cpu == 0)) {
ratio = 0;
} else {
ratio = (100.0 * (s_cur_pro_cpu - s_pre_pro_cpu)) / (s_cur_sys_cpu - s_pre_sys_cpu);
}
return ratio;
}
//获取默认网关地址
int readNlSock(int sockFd, char *bufPtr, int seqNum, int pId)
{
struct nlmsghdr *nlHdr;
int readLen = 0, msgLen = 0;
do{
//收到内核的应答
if((readLen = recv(sockFd, bufPtr, BUFSIZE - msgLen, 0)) < 0)
{
perror("SOCK READ: ");
return -1;
}
nlHdr = (struct nlmsghdr *)bufPtr;
//检查header是否有效
if((NLMSG_OK(nlHdr, readLen) == 0) || (nlHdr->nlmsg_type == NLMSG_ERROR))
{
perror("Error in recieved packet");
return -1;
}
if(nlHdr->nlmsg_type == NLMSG_DONE)
{
break;
}
else
{
bufPtr += readLen;
msgLen += readLen;
}
if((nlHdr->nlmsg_flags & NLM_F_MULTI) == 0)
{
break;
}
} while((nlHdr->nlmsg_seq != seqNum) || (nlHdr->nlmsg_pid != pId));
return msgLen;
}
//分析返回的路由信息
void parseRoutes(struct nlmsghdr *nlHdr, struct route_info *rtInfo,char *gateway)
{
struct rtmsg *rtMsg;
struct rtattr *rtAttr;
int rtLen;
char *tempBuf = NULL;
struct in_addr dst;
struct in_addr gate;
tempBuf = (char *)malloc(100);
rtMsg = (struct rtmsg *)NLMSG_DATA(nlHdr);
// If the route is not for AF_INET or does not belong to main routing table
//then return.
if((rtMsg->rtm_family != AF_INET) || (rtMsg->rtm_table != RT_TABLE_MAIN))
return;
rtAttr = (struct rtattr *)RTM_RTA(rtMsg);
rtLen = RTM_PAYLOAD(nlHdr);
for(;RTA_OK(rtAttr,rtLen);rtAttr = RTA_NEXT(rtAttr,rtLen))
{
switch(rtAttr->rta_type)
{
case RTA_OIF:
if_indextoname(*(int *)RTA_DATA(rtAttr), rtInfo->ifName);
break;
case RTA_GATEWAY:
rtInfo->gateWay = *(u_int *)RTA_DATA(rtAttr);
break;
case RTA_PREFSRC:
rtInfo->srcAddr = *(u_int *)RTA_DATA(rtAttr);
break;
case RTA_DST:
rtInfo->dstAddr = *(u_int *)RTA_DATA(rtAttr);
break;
}
}
dst.s_addr = rtInfo->dstAddr;
if (strstr((char *)inet_ntoa(dst), "0.0.0.0"))
{
//printf("oif:%s",rtInfo->ifName);
gate.s_addr = rtInfo->gateWay;
sprintf(gateway, (char *)inet_ntoa(gate));
//printf("%s\n",gateway);
gate.s_addr = rtInfo->srcAddr;
//printf("src:%s\n",(char *)inet_ntoa(gate));
gate.s_addr = rtInfo->dstAddr;
//printf("dst:%s\n",(char *)inet_ntoa(gate));
}
free(tempBuf);
return;
}
int get_gateway(char *gateway)
{
struct nlmsghdr *nlMsg;
//struct rtmsg *rtMsg;
struct route_info *rtInfo;
char msgBuf[BUFSIZE];
int sock, len, msgSeq = 0;
if((sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE)) < 0)
{
perror("Socket Creation: ");
return -1;
}
memset(msgBuf, 0, BUFSIZE);
nlMsg = (struct nlmsghdr *)msgBuf;
//rtMsg = (struct rtmsg *)NLMSG_DATA(nlMsg);
nlMsg->nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg)); // Length of message.
nlMsg->nlmsg_type = RTM_GETROUTE; // Get the routes from kernel routing table .
nlMsg->nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST; // The message is a request for dump.
nlMsg->nlmsg_seq = msgSeq++; // Sequence of the message packet.
nlMsg->nlmsg_pid = getpid(); // PID of process sending the request.
if(send(sock, nlMsg, nlMsg->nlmsg_len, 0) < 0)
{
printf("Write To Socket Failed…\n");
return -1;
}
if((len = readNlSock(sock, msgBuf, msgSeq, getpid())) < 0)
{
printf("Read From Socket Failed…\n");
return -1;
}
rtInfo = (struct route_info *)malloc(sizeof(struct route_info));
for(;NLMSG_OK(nlMsg,len);nlMsg = NLMSG_NEXT(nlMsg,len))
{
memset(rtInfo, 0, sizeof(struct route_info));
parseRoutes(nlMsg, rtInfo,gateway);
}
free(rtInfo);
close(sock);
return 0;
}
//status回响应
void http_handler_status_msg(struct evhttp_request *req,void *arg)
{
struct sysinfo info;
time_t cur_time = 0;
time_t boot_time = 0;
struct tm *ptm = NULL;
unsigned int run_days,run_hour,run_minute,run_second;
pid_t process_id;
//启动时间,启动时长
if (sysinfo(&info))
{
fprintf(stderr, "Failed to get sysinfo, errno:%u, reason:%s\n",
errno, strerror(errno));
return ;
}
time(&cur_time);
if (cur_time > info.uptime)
{
boot_time = cur_time - info.uptime;
}
else
{
boot_time = info.uptime - cur_time;
}
ptm = localtime(&boot_time);
/*printf("System boot time:%d-%-d-%d %d:%d:%d\n", ptm->tm_year + 1900,
ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec);*/
run_days=info.uptime / 86400;
run_hour=(info.uptime % 86400)/3600;
run_minute=(info.uptime % 3600)/60;
run_second=info.uptime % 60;
//printf("system running time:%dday %dhour %dminute %dsecond\n",run_days,run_hour,run_minute,run_second);
//进程号
process_id = getpid();
//printf("process id:%d\n", process_id);
//默认网关地址
char buff[256];
get_gateway(buff);
//printf("gateway:%s\n",buff);
//内存(虚存，实存)
unsigned int n_rss, n_resident, n_share, n_text, n_lib, n_data, n_dt;
char buf[256];
char buf1[256];
char buf2[256];
char buf3[256];
FILE *f = fopen("/proc/self/statm","r");
if(f)
{
fscanf(f,"%u%u%u%u%u%u%u",&n_rss,&n_resident,&n_share,&n_text,&n_lib,&n_data,&n_dt);
fclose(f);
}
else
{
printf("open /proc/self/statm failed!");
return;
}
n_rss = n_rss * 4;
n_resident = n_resident *4;
sprintf(buf, "VmSize=%ukB, VmRss=%ukB", n_rss, n_resident);
//printf("memory info:%s\n",buf);
//cpu
float cpu_rate;
unsigned int cpu_num;
cpu_rate = get_cpu_stat(process_id);
cpu_num = get_nprocs();//获取可用cpu数
//printf("cpu usage = %f\n", cpu_rate*cpu_num);
struct evbuffer *retbuff = NULL;
retbuff = evbuffer_new();
if(retbuff == NULL)
{
printf("====line:%d,%s\n",__LINE__,"retbuff is null.");
return;
}
sprintf(buf1, "%d-%-d-%d %d:%d:%d", ptm->tm_year + 1900,ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec);
sprintf(buf2, "%ddays %dhours %dminutes %dseconds", run_days,run_hour,run_minute,run_second);
sprintf(buf3, "%f", cpu_rate*cpu_num);
cJSON * root = cJSON_CreateObject();
//根节点下添加
cJSON_AddItemToObject(root, "boot time", cJSON_CreateString(buf1));
cJSON_AddItemToObject(root, "running time", cJSON_CreateString(buf2));
cJSON_AddItemToObject(root, "process id", cJSON_CreateNumber(process_id));
cJSON_AddItemToObject(root, "server ip", cJSON_CreateString(g_http_address));
cJSON_AddItemToObject(root, "default gateway", cJSON_CreateString(buff));
cJSON_AddItemToObject(root, "memory info", cJSON_CreateString(buf));
cJSON_AddItemToObject(root, "cpu usage", cJSON_CreateString(buf3));
printf("cjson_status_print:%s\n", cJSON_Print(root));
//evbuffer_add_printf(retbuff,"System boot time: %d-%-d-%d %d:%d:%d\r\nsystem running time:%dday %dhour %dminute %dsecond\r\nprocess id:%d\r\ngateway:%s\r\nmemory info:%s\r\ncpu% = %f\r\n",
// ptm->tm_year + 1900,ptm->tm_mon + 1, ptm->tm_mday, ptm->tm_hour, ptm->tm_min, ptm->tm_sec, run_days,run_hour,run_minute,run_second,process_id,buff,buf,cpu_rate*cpu_num);
evbuffer_add_printf(retbuff,cJSON_Print(root));
evhttp_send_reply(req,HTTP_OK,"OK",retbuff);
evbuffer_free(retbuff);
if(root)
{
cJSON_Delete(root);
}
return;
}
//keepalive回响应
void http_handler_keepalive_msg(struct evhttp_request *req,void *arg)
{
struct tm *local;
time_t tt;
tt=time(NULL);
local=localtime(&tt);
struct evbuffer *retbuff = NULL;
retbuff = evbuffer_new();
if(retbuff == NULL)
{
printf("====line:%d,%s\n",__LINE__,"retbuff is null.");
return;
}
cJSON * root = cJSON_CreateObject();
cJSON_AddItemToObject(root, "current time", cJSON_CreateString(asctime(local)));
printf("cjson_keepalive_print:%s\n", cJSON_Print(root));
evbuffer_add_printf(retbuff,cJSON_Print(root));
evhttp_send_reply(req,HTTP_OK,"OK",retbuff);
evbuffer_free(retbuff);
if(root)
{
cJSON_Delete(root);
}
return;
}
//int main()
int http_check_init()
{
struct evhttp *http_server = NULL;
//short http_port = 10000;
//char *http_addr = "0.0.0.0";
MESA_load_profile_int_def(http_check_conf_file, "HTTP", "SERVER_PORT", &g_http_port, 0);
MESA_load_profile_string_def(http_check_conf_file, "HTTP", "SERVER_IP", g_http_address, MAX_LOG_PATH_LEN, NULL);
printf("*v1*******read_ip:%s,read_port:%d\n",g_http_address, g_http_port);
//初始化
event_init();
//启动http服务端
http_server = evhttp_start(g_http_address,g_http_port);
if(http_server == NULL)
{
printf("====line:%d,%s\n",__LINE__,"http server start failed.");
return -1;
}
//设置请求超时时间(s)
evhttp_set_timeout(http_server,100);
//设置事件处理函数，evhttp_set_cb针对每一个事件(请求)注册一个处理函数，
//区别于evhttp_set_gencb函数，是对所有请求设置一个统一的处理函数
evhttp_set_cb(http_server,"/status",http_handler_status_msg,NULL);//为特定的URI指定callback
evhttp_set_cb(http_server,"/keepalive",http_handler_keepalive_msg,NULL);
//循环监听
event_dispatch();
evhttp_free(http_server);
return 0;
}
void http_check_destory()
{
return;
}