login_assist.c

多用户银行系统

#include <sys/ipc.h>
#include <sys/mman.h>
#include <sys/sem.h>
#include <unistd.h>
#include <sys/types.h>
#include <signal.h>
#include <stdio.h>
#include <stddef.h>

#include "../include/stddef.h"
#include "../include/structs.h"
#include "../include/tools.h"

SHM *shm;

//void init_semaphore_struct(struct sembuf *sem,int semnum,
//int semop,int semflg)
//{
	/* ........ */
//	sem->sem_num=semnum;
//	sem->sem_op=semop;
//	sem->sem_flg=semflg;
//}

/*
int getInput(USER *user){
	char *s;	
	char c;
	char *p;
	int i = 0;

	p = user->name;
	while(1){
  		system("clear");
		printf("Name :");
		while(1){
			if( ((c = getchar()) != '\n') && ((p - user->name) < MAX_SIZE) ){
				*p ++ = c;
				continue;
			}
			break;
		}
		*p = '\0';
		s = getpass("Password:");
		p = user->pwd;
		while(1){
			if( i < strlen(s) && ((p - user->pwd) < MAX_SIZE)){
				*(p + i) = *(s + i); 
				i ++;
				continue;
			}
			break;
		}
		*(p + i + 1) = '\0';
		break;
	}
	printf("getinput() is over ... \n");		
	return OK;
};
*/
int getInput(USER *user){
	system("clear");
	printf("Name : ");
	scanf("%s" , user->name);
	printf("Passwd : ");
	scanf("%s" , user->pwd);		
	getchar();
	return OK;
};
int readFile(char *guibuf){
	FILE *fp;
	char c;
	int i = 0;

	//fp = fopen(GUIFILE , "r");	
	fp = fopen("/home/lastbank/file/guifile" , "r");
	if(!fp){

		
		printf("file error!\n");
		return EFILE;	
	}
	while((c = fgetc(fp)) != EOF){
		*(guibuf + i) = c;		
		i ++;
	}
	*(guibuf + i + 1) = '\0';
	printf("after readFile...\n");
	fclose(fp);
	return OK;
};

int showGUI(char *guibuf){
	printf("%s\n" , guibuf);	
	return OK;
};
/*
void * getSHM(){
	void *p;
	void *tmp;
	key_t key;
	int shmid;
		
	key = KEY;
	shmid = shmget(key , 0 , 0);
	p = shmat(shmid , NULL , 0);
	tmp = p;

	while(1){
		if(p - tmp >= SHM_SIZE)return NULL;	
		if(*((int *)p) == 0){
			*((int *)p) = 1;
			p += sizeof(int);
			return (void *)p;	
		}if(*((int*)p) == 1){
			p += sizeof(int);
			p += sizeof(SHM);	
			continue;
		}
	}
	
};

int freeSHM(void *p){
	*( (int *)(p - sizeof(int)) ) = 0;
	return 1;
};
*/

int getChoice(char *oper){
	char *s = oper;
	char c;

	printf("please intput your choice : ");
	while(1){
		c = getchar();
		if( c != '\n' && ((s - oper) < OPER_SIZE)){
			*s ++ = c;	
			continue;
		}else{
			if(c  == '\n'){
				break;		
			}
			else {
				continue;
			}
		}
	}	
	*s = '\0';
	return OK;
};

int getInfo(char *oper){
	if(strcmp(oper , "changpwd") == 0){
		//_changepwd();
	}if(strcmp(oper , "save") == 0){
		//_save();	
	}if(strcmp(oper , "transfer") == 0){
		//!trans();	
	}if(strcmp(oper , "draw") == 0){
		//_draw();	
	}
	return OK;	
};
/*
int execute_(char *oper){
	extern SHM *shm;
	char *s;
	s = (char *)malloc(sizeof(char) * 11);
	char c;
	int i = 0;

	if(strcmp(oper , "save") == 0){
		strcpy(shm->mark , "save");
		printf("input your name :");
		while(1){
			c = getchar();
			if( c != '\n' && i < 10){
				*s ++ = c;
				continue;		
			}else{
				if(c == '\n')break;
				else continue;	
			}		
		}
		*s = '\0';
		//scanf("%s" , s);
		strcpy(shm->chara , s);
		printf("input your password :");	
	//	scanf("%s" , s);
		i = 0;
		while(1){
			c = getchar();
			if( c != '\n' && i < 10){
				*s ++ = c;
				continue;
			}else{
				if(c == '\n')break;
				else continue;
			}
		}
		*s = '\0';
		strcpy(shm->charb , s);
		
		printf("shm->spid : %d\n" , shm->spid);
		//kill(28543 , SIGRQST);
		kill(shm->spid , SIGRQST);
		//sigqueue(shm->spid , SIGRQST , sv.sival_int);
		
		printf("have send signal to server ...\n");
	}	
};
*/
int getStr(char *str , int max){
	char *s;
	char c;
	int i = 0;

	s = str;	
	while(1){
		c = getchar();
		if(c != '\n' && i < max - 1){
			*s ++ = c;
			continue;	
		}else{
			if(c == '\n')break;
			else continue;	
		}	
		*s = '\0';
	}
	return OK;
};
int execute(int index , char *oper){
	
	union sigval mysigval;

	if(strcmp(oper , "quit") == 0 || strcmp(oper , "exit") == 0){
		freeSHM(index);
		exit(0);	
		system("logout");
	}
	getInfo(oper);// get user's input

	mysigval.sival_int = index;

	if(sigqueue((shm->swap_arr)[0].swap.spid,SIGRQST,mysigval)==-1)
		printf("send error\n");

	return OK;	
};
int identify(USER *user){
        USER usr;
        FILE *fp;
        if( (fp = fopen("/home/lastbank/pwdfile", "r")) == NULL){
                printf("pwdfile open error....\n");
                exit(0);
        }
        while(! fread(&usr, sizeof(USER), 1, fp)){
		if(strcmp(usr.name , user->name) == 0){
			if(strcmp(usr.pwd , user->pwd) == 0)
				return OK;
			else{
				return EPWD;	
			}	
		}
	}
	return ENAME;
};