secgateway/Product/user/user_auth/user_hashtable.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include "hlist.h"
#include "user_hashtable.h"
#include "user_auth.h"
extern USER_AUTH_LIST g_user_auth_ret_table[] ;
/*链表全局变量 */
struct hlist_head *hash;
USER_INFO *pNode ;
/*计算hash值 */
struct hlist_head * call_hash(struct hlist_head *hash, uint32_t ip)
{
unsigned int val = ip % 100;
printf("val =%d\n", val);
return &hash[val];
}
/*初始化函数 */
int Init_hash()
{
int i = 0;
/*创建hash头 */
hash = (struct hlist_head*)malloc(sizeof(*hash)*100);
if(NULL == hash)
{
printf("alloc error\n");
return -1;
}
/*初始化hash表头 */
for(i = 0; i < 100; i++)
INIT_HLIST_HEAD(&hash[i]);
/*hsah桶普通节点分配内存 */
pNode = (struct user_info *)malloc(sizeof(struct user_info));
if (NULL == pNode)
{
printf("alloc error\n");
return -1;
}
/*初始化hash桶的普通结点 */
memset(pNode,0,sizeof(struct user_info));
INIT_HLIST_NODE(&pNode->hnode);
}
/*查找用户信息*/
USER_INFO * ufind_user(uint32_t user_ip)
{
struct hlist_node *p = NULL, *n = NULL ;
/* 这个实际上就是一个for循环从头到尾遍历链表。
* posstruct hlist_node类型的一个指针
* nstruct hlist_node类型的一个指针
* headstruct hlist_head类型的一个指针hlist链表的头结点
*/
hlist_for_each_safe(p,n,call_hash(hash,user_ip))
{
/* p表示struct hlist_node类型的一个地址。
* struct user_info
* hnodetype结构体中的hlist_node成员变量的名称
* p所指地址的这个结构体的首地址
*/
pNode = hlist_entry(p, struct user_info ,hnode);
if(pNode != NULL)
printf("[%ld %s %d %d %ld %ld %d]\n",pNode->auth_user.user_ip, pNode->auth_user.user_name, pNode->auth_user.user_id,
pNode->auth_user.group_id, pNode->auth_user.message_num,pNode->auth_user.byte_num, pNode->auth_user.online_time);
return pNode;
}
}
/*增加用户信息*/
int uadd_user(uint32_t user_ip, char *name, int user_id, int group_id, uint64_t message_num, uint64_t byte_num, time_t online_time)
{
struct hlist_node *pos = NULL, *n = NULL ;
pNode = NULL;
struct hlist_head* pVal = call_hash(hash, user_ip);
printf("pVal = %p, pVal->first = %p\n", pVal, pVal->first);
//hlist_for_each_safe(p,n,call_hash(hash, user_ip)) /*查找ip是否存在hash表中 */
for (pos = pVal->first; pos && ({ n = pos->next; 1; }); pos = n)
{
pNode = hlist_entry(pos, struct user_info ,hnode);
if(pNode != NULL)
printf("IP ALEADY EXISTED\n");
}
if (pNode == NULL)
{
pNode = (struct user_info *)malloc(sizeof(struct user_info));
if (NULL == pNode)
{
return -1;
}
memset(pNode,0,sizeof(struct user_info));
INIT_HLIST_NODE(&pNode->hnode);
pNode->auth_user.user_ip = user_ip;
hlist_add_head(&pNode->hnode, call_hash(hash, user_ip));
}
memcpy(pNode->auth_user.user_name, name, sizeof(char) * 32);
pNode->auth_user.user_id = user_id;
pNode->auth_user.group_id = group_id;
pNode->auth_user.message_num = message_num;
pNode->auth_user.byte_num = byte_num;
pNode->auth_user.online_time = online_time;
}
/*删除用户信息 */
void udelete_user(int user_ip)
{
struct hlist_node *p = NULL, *n = NULL ;
int i = 0;
unsigned short check_id;
hlist_for_each_safe(p,n,call_hash(hash,user_ip))
{
pNode = hlist_entry(p, struct user_info ,hnode);
/*查找用户ID确认ID是否存在 */
check_id = g_user_auth_ret_table[pNode->auth_user.user_id].group_id;
if(check_id != NULL)
{
hlist_del(&pNode->hnode);
}
#if 0
if(pNode != NULL)
{
hlist_del(&pNode->hnode);
}
#endif
free(pNode);
}
}
/*删除所有的hash节点 */
void udelete_all()
{
struct hlist_node *p = NULL, *n = NULL ;
int i = 0;
for(i = 0; i < 100; i++)
{
hlist_for_each_safe(p,n,&hash[i])
{
pNode = hlist_entry(p, struct user_info ,hnode);
hlist_del(&pNode->hnode);
free(pNode);
}
}
}
/*打印所有信息信息 */
void uprintf_users()
{
struct hlist_node *p = NULL, *n = NULL ;
int i = 0;
for(i = 0; i < 100; i++)
{
hlist_for_each_safe(p,n,&hash[i])
{
char str[32];
pNode = hlist_entry(p, struct user_info ,hnode);
if(pNode != NULL)
inet_ntop(AF_INET, (void *)&(pNode->auth_user.user_ip), str, 32);
printf("[%s %s %d %d %ld %ld %d]\n", str, pNode->auth_user.user_name, pNode->auth_user.user_id,
pNode->auth_user.group_id, pNode->auth_user.message_num,pNode->auth_user.byte_num, pNode->auth_user.online_time);
}
}
}