session.h

来自「这是我自己写的用于嵌入式设备的CGI程序」· C头文件 代码 · 共 85 行

#ifndef _SESSION_H
#define _SESSION_H 1

//#define SESS_DIRECTORY "/tmp/cgisess/"
#define SESS_DIRECTORY "/var/cgisess/"

#define SESS_FILENAME_PREFIX "sess_"
#define SESS_LIVE_TIME 2400         //秒

#define LANGUAGEFILE_EN                 "/web/html/language/en"
#define LANGUAGEFILE_GB                 "/web/html/language/gb"
#define LANGUAGEFILE_BIG5               "/web/html/language/big5"

#define EN      1
#define GB      2
#define BIG5    3
#define FR      4
#define DE      5
#define IT      6
#define ES      7
#define PT      8
#define RU      9
#define JP      10

typedef struct _SESSION_DATA
{
    char    session_filename[29];   //不包含完整路徑，文件名以sess_開頭，后接session_id字符串
    char    session_id[24];         //隨機生成
    char    auth_str[48];           //驗證字符串，隨機生成，並作爲cookie發送至客戶端；
    dword   client_ip;              //客戶端IP地址，本机字节序保存
    time_t  update_time;            //更新時間（最後活動時間）
    char    username[24];
    char    password[24];
    dword   user_id;
    dword   group_id;
    byte    authority;
    byte    language_selected;      //选择的语言
    byte    reserved[29];
}
SESSION_DATA;

typedef enum
{
	SessionCheckSuccess,
	SessionTimeOut,                 //超時
	SessionNotExist,                //不存在
	CookieNotConform,               //客戶端cookie不一緻
//	IpNotConform                    //客戶端IP地址不一緻
}
sessionCheckResult;

typedef enum
{
    LoginOK,
    LoginFailure
}
LoginCheckResult;

extern SESSION_DATA* current_session_data;
extern const char* sess_filename_prefix;

/*---------------------------------------------------------------------------*
 * 以下函数由使用者调用
 *---------------------------------------------------------------------------*/
extern int      sessionCheckOnHead      ( char * current_session_id );
extern sessionCheckResult sessionCheck  ( char *current_session_id, SESSION_DATA * current_session_data );
extern int      sessionInit             ( char *current_session_id, SESSION_DATA * current_session_data );
extern int      sessionUpdate           ( SESSION_DATA * current_session_data );
extern int      sessionDestroy          ( char *current_session_id);
extern int      oldSessionClean         ( void );
extern int      get_current_user        ( char * current_session_id, char * username );
extern int      get_user_authority      ( char * current_session_id, int * authority );
extern int      get_language_selected   ( char * current_session_id, int* language_selected );
extern void     read_prev_selectd       (int* language_selected);
extern char*    language_tag            (int language_selected, char* cgi_section, char* tag_name);

/*---------------------------------------------------------------------------*
 * 以下函数为内部使用
 *---------------------------------------------------------------------------*/
void rand_str(int n, char * str);
void init_sess_filename ( char * sess_filename, char * session_id );
int sess_load(const char* session_id, const char* datadir, SESSION_DATA * current_session_data);

#endif