www.pudn.com > FMS.rar > FMS.cpp
// FMS.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "io.h"
#include "conio.h"
#include "stdio.h"
#include "stdlib.h"
#include "malloc.h"
#include "string.h"
#include "ctype.h"
#define M 20/*一个用户可保存M个文件*/
#define N 30/*用户数*/
#define L 5/*用户只能一次打开L个文件*/
typedef struct MFD/*主文件目录*/
{
char username[100];
char password[100];
FILE fp;/*文件指针*/
}MFD;
typedef struct UFD/*用户文件目录*/
{
char filename[256];
char protect;/*保护码*/
int lenght;/*文件长度*/
}UFD;
typedef struct OFD/*打开文件目录*/
{
char filename[256];
char opencode;/*打开保护码*/
int fp;/*读写指针*/
}OFD;
typedef struct COMM/*命令串*/
{
char string[256];/*命令*/
struct COMM *next;/*后继指针*/
}COMM;
MFD mainfd[N];/*主文件目录数组*/
UFD userfd[M];/*用户文件目录数组*/
OFD openfd[L];/*打开文件目录数组*/
COMM *command;/*命令传指针*/
char username[10];
int usernum=0,savenum=0,opennum=0;
int workfile=0;
void init();
void init_ufd(char *username);/*初始化用户文件目录*/
void mesg(char *str);
char *getpass();/*设置口令*/
char *getuser();/*设置用户名*/
COMM *readcommand();/*读命令串*/
void login();/*用户登录*/
void logout();/*用户注销*/
void setpass();/*修改口令*/
void create();
void mydelete();/*删除*/
void myread();/*读*/
void myopen();/*打开*/
void myclose();/*关闭*/
void mywrite();/*写*/
void help();/*帮助*/
void dir();/*列文件目录*/
void mycopy();/*复制*/
void myrename();/*文件改名*/
int main(int argc, char* argv[])
{
init();
for(;;)
{
readcommand();
if(strcmp(command->string,"create")==0)
create();
else if(strcmp(command->string,"delete")==0)
mydelete();
else if(strcmp(command->string,"open")==0)
myopen();
else if(strcmp(command->string,"close")==0)
myclose();
else if(strcmp(command->string,"read")==0)
myread();
else if(strcmp(command->string,"write")==0)
mywrite();
else if(strcmp(command->string,"copy")==0)
mycopy();
else if(strcmp(command->string,"rename")==0)
myrename();
else if(strcmp(command->string,"login")==0)
login();
else if(strcmp(command->string,"setpass")==0)
setpass();
else if(strcmp(command->string,"logout")==0)
logout();
else if(strcmp(command->string,"help")==0)
help();
else if(strcmp(command->string,"dir")==0)
dir();
else if(strcmp(command->string,"exit")==0)
break;
else
mesg("Bad command");
}
return 0;
}
void init()
{
FILE *fp;
char tempname[20],tempass[20];
int i=0;
usernum=0;
savenum=0;
opennum=0;
strcpy(username,"");
/*用户使用时，建立一个mainfile.txt文件，包括每个用户的用户名和口令*/
/*然后才能运行此程序*/
if((fp=fopen("mainfile.txt","r"))!=NULL)
{
while(!feof(fp))
{
strcpy(tempname,"");
fgets(tempname,20,fp);
if(strcmp(tempname,"")!=0)
{
fgets(tempass,20,fp);
tempname[strlen(tempname)-1]='\0';
tempass[strlen(tempass)-1]='\0';
strcpy(mainfd[usernum].username,tempname);
strcpy(mainfd[usernum].password,tempass);
usernum++;
}
}
fclose(fp);
}
}
void init_ufd(char *username)/*初始化用户文件目录*/
{
FILE *fp;
char tempfile[100],tempprot;
int templength;
savenum=0;
opennum=0;
workfile=-1;
if((fp=fopen(username,"w+"))!=NULL)
{
while(!feof(fp))
{
strcpy(tempfile,"");
fgets(tempfile,50,fp);
if(strcmp(tempfile,"")!=0)
{
fscanf(fp,"%c",&tempprot);
fscanf(fp,"%d",&templength);
tempfile[strlen(tempfile)-1]='\0';
strcpy(userfd[savenum].filename,tempfile);
userfd[savenum].protect=tempprot;
userfd[savenum].lenght=templength;
savenum++;
fgets(tempfile,50,fp);
}
}
}
fclose(fp);
}
void mesg(char *str)
{
printf("\n %s\n",str);
}
char *getpass()/*设置密码*/
{
char password[20];
char temp;
int i=0;
password[0]='\0';
for(;i<10;)
{
while(!kbhit());
temp=getch();
if(isalnum(temp)||temp=='_'||temp==13)
{
password[i]=temp;
if(password[i]==13)
{
password[i]='\0';
break;
}
putchar('*');
i++;
password[i]='\0';
}
}
return (password);
}
char *getuser()/*设置用户名*/
{
char username[20];
char temp;
int i=0;
username[0]='\0';
for(i=0;i<10;)
{
while(!kbhit());
temp=getch();
if(isalnum(temp)||temp=='_'||temp==13)
{
username[i]=temp;
if(username[i]==13)
{
username[i]='\0';
break;
}
putchar(temp);
i++;
username[i]='\0';
}
}
return (username);
}
COMM *readcommand()/*读命令串*/
{
char temp[256];
char line[256];
int i=0,end=0;
COMM *newp,*p;
command=NULL;
strcpy(line,"");
while(strcmp(line,"")==0)
{
printf("\nc:\\>");
gets(line);
}
for(i=0;i0)
{
temp[end]='\0';
newp=(COMM*)malloc(sizeof(COMM));
strcpy(newp->string,temp);
newp->next =NULL;
if(command==NULL)
command=newp;
else
{
p=command;
while(p->next !=NULL)
p=p->next;
p->next=newp;
}
}
}
p=command;
return command;
}
void login()/*用户登录*/
{
FILE *fp;
int i=0;
char password[20],confirm[20],tempname[20];
COMM *p=command;
while(p!=NULL)
{
printf("%s\n",p->string);
p=p->next;
}
if(command->next==NULL)
{
printf("\n User Name:");
strcpy(tempname,getuser());
}
else if(command->next->next!=NULL)
{
mesg("Too many parameters");
return;
}
else
strcpy(tempname,command->next->string);
// printf("%s%d\n",tempname,usernum);
for(i=0;i=usernum)
{
printf("\n new user account,enter your password twice!");
printf("\n Password:");
strcpy(password,getpass());
printf("\n confirm Password:");
strcpy(confirm,getpass());
if(strcmp(password,confirm)==0)
{
if(usernum>=N)
mesg("Create new account false! number of user account limited.\n login false!");
else
{
strcpy(mainfd[usernum].username,tempname);//把新用户和口令填如mainfd中
strcpy(mainfd[usernum].password,password);
usernum++;
strcpy(username,tempname);
mesg("Create a new user! \n login suc!cess");
init_ufd(username);
fp=fopen("mainfile.txt","w+");//将新用户添加到mainfile.txt文件中
for(int i=0;inext!=NULL)
mesg("Too many parameters!");
else if(strcmp(username,"")==0)
mesg("No user login!");
else
{
strcpy(username,"");
opennum=0;
savenum=0;
workfile=-1;
mesg("User login!");
}
}
void setpass()/*修改口令*/
{
int i=0;
FILE *fp;
char oldpass[20],newpass[20],confirm[20];
if(strcmp(username,"")==0)
mesg("No user login!");
else
{
printf("\n Old password:");
strcpy(oldpass,getpass());
for(int i=0;inext==NULL)
mesg("Too few parametets!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
else
{
for(i=0;inext->string);
if(strcmp(userfd[i].filename,command->next->string)==0)
break;
}
if(i=M)
mesg("Error! connot create file! number of files limited!");
else
{
strcpy(userfd[savenum].filename,command->next->string);
userfd[i].protect='r';
userfd[i].lenght=rand();
savenum++;
mesg("Create file success!");
fp=fopen(username,"w+");
for(i=0;inext==NULL)
mesg("Too few parametets!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
else
{
for(i=0;inext->string);
if(strcmp(userfd[i].filename,command->next->string)==0)
break;
}
if(i>=savenum)
mesg("Error! the file not existed!");
else
{
tempsave=i;
for(i=0;inext->string,openfd[i].filename)==0)
break;
}
if(i>=opennum)
mesg("File not open");
////////////////////////////////////////////
else
{
if(tempsave==savenum-1)
savenum--;
else
{
for(;tempsavenext==NULL)
mesg("Too few parametets!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
else
{
strcpy(tempfile,command->next->string);
for(i=0;i=savenum)
mesg("File not existed!");
else
{
tempsave=i;
for(i=0;i=opennum)
mesg("File not opened");
else
{
if(userfd[tempsave].lenght<1000)
printf("\n The file size is %d KB",userfd[tempsave].lenght);
else if(userfd[tempsave].lenght==1000)
printf("\n The file size is 1000 KB");
else
printf("\n The file size is %d,%d KB",userfd[tempsave].lenght/1000,userfd[tempsave].lenght%1000);
mesg("File read");
}
}
}
}
void myopen()/*打开*/
{
int i=0;
int type=0;
char tempcode;
char tempfile[100];
if(strcmp(username,"")==0)
mesg("No user login!");
else if(command->next==NULL)
mesg("Too few parameters!");
else
{
strcpy(tempfile,"");
tempcode='r';
if(strcmp(command->next->string,"/r")==0)
{
tempcode='r';
type=1;
}
else if(strcmp(command->next->string,"/w")==0)
{
tempcode='w';
type=1;
}
else if(strcmp(command->next->string,"/d")==0)
{
tempcode='d';
type=1;
}
else if(command->next->string[0]=='/')
mesg("Error! /r/w/d request!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
else
strcpy(tempfile,command->next->string);
/////////////////////////////////////////////////////
//////////////////////////////////////////////////////
if(type==1)
{
if(command->next->next!=NULL)
{
if(command->next->next->next!=NULL)
mesg("Too many parameters!");
else
strcpy(tempfile,command->next->next->string);
}
else
mesg("Too few parameters!");
}
if(strcmp(tempfile,""))
{
for(i=0;i=savenum)
mesg("File not existed!");
else
{
for(i=0;i=L)
{
mesg("Error! connot open file! number of opened files limited!");
}
else
{
strcpy(openfd[opennum].filename,tempfile);
openfd[opennum].opencode=tempcode;
workfile=opennum;
opennum++;
mesg("File open sucess!");
}
}
}
}
}
void myclose()/*关闭*/
{
int i=0;
int tempsave=0;
char tempfile[100];
if(strcmp(username,"")==0)
mesg("No user lgoin!");
else if(command->next==NULL)
mesg("Too few parametets!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
else
{
strcpy(tempfile,command->next->string);
for(i=0;i=savenum)
mesg("File not existed!");
else
{
for(i=0;i=opennum)
mesg("File not opened");
else
{
if(i==opennum-1)
opennum--;
else
{
for(;inext==NULL)
mesg("Too few parametets!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
else
{
strcpy(tempfile,command->next->string);
for(i=0;i=savenum)
mesg("File not existed!");
else
{
tempsave=i;
for(i=0;i=opennum)
mesg("File not opened");
else
{
mesg("File write");
int tt=rand();
if(userfd[tempsave].lenght<=1000)
printf("\n The file size from %d KB to %d KB",userfd[tempsave].lenght,userfd[tempsave].lenght+tt);
/* else if(userfd[tempsave].lenght=1000)
printf("\n The file size from 1000 KB");*/
else
printf("\n The file size form %d,%d KB to %d,%d KB",userfd[tempsave].lenght/1000,userfd[tempsave].lenght%1000,userfd[tempsave].lenght+tt/1000,userfd[tempsave].lenght+tt%1000);
userfd[tempsave].lenght=userfd[tempsave].lenght+tt;
}
}
}
}
void help()/*帮助*/
{
static char *cmd[]={"login","setpass","logout","create",
"open","read","write","delete","dir",
"help","exit","copy","rename"};
static char *cmdhlp[]={"aommand format: login []",
"command format:setpass",
"command format:logout",
"command format:create ",
"command format:open [/r/w/d] ",
"command format:read ",
"command format:write ",
"command format:delete ",
"command format:dir [/u/o/f]",
"command format:help []",
"command format:exit",
"command format:copy ",
"command format:rename "};
static char *detail[]={"explain:user login in the file system.",
"explain:modify the user password.",
"explain:user logout the file system.",
"explain:creat a new file.",
"explain:/r -- read only [deflaut]\n\t /w -- list opened files \n\t /d --read,modify and delete.",
"explain:read the file.",
"explain:modify the file.",
"explain:delete the file.",
"explain:/u -- list the user account\n\t /0 -- list opened files\n\t /f --list user file[deflaut].",
"explain: -- list the command detail format and explain.\n\t [deflaut] list the command.",
"explain:exit from the file sysytem.",
"explain:copy from one file to another file.",
"explain:modify the file name."};
int helpnum=13;
int i=0;
if(command->next==NULL)
{
mesg(cmdhlp[9]);
mesg(detail[9]);
mesg("step 1: login");
printf("\t if user then login,if user not exist then create new user");
mesg("step 2: open the file for read(/r),write(/w)or delete(/d)");
printf("\t you can open one or more files.one command can open one file");
mesg("step 3: read,write or delete some one file");
printf("\t you can operate one of the opened files.one command can open one file");
mesg("step 4: close the open file");
printf("\t you can close one of the oepned files.one command can open one file");
mesg("step 5: user loout.close all the user opened files");
printf("\n command list:");
for(i=0;inext->next!=NULL)
mesg("Too many parameters!");
else
{
for(i=0;inext->string,cmd[i])==0)
break;
}
if(i>=helpnum)
mesg("the command not existed!");
else
{
mesg(cmdhlp[i]);
mesg(detail[i]);
}
}
}
void dir()/*列目录文件*/
{
int i=0;
int type=0;
char tempcode;
if(strcmp(username,"")==0)
mesg("No user login!");
else
{
if(command->next==NULL)
{
tempcode='f';
}
else
{
if(strcmp(command->next->string,"/u")==0)
{
tempcode='u';
}
else if(strcmp(command->next->string,"/o")==0)
{
tempcode='o';
}
else if(strcmp(command->next->string,"/f")==0)
{
tempcode='f';
}
else if(command->next->string[0]=='/')
mesg("Error! /u/o/f request!");
else if(command->next->next!=NULL)
mesg("Too many parameters!");
}
if('u'==tempcode)
{
printf("list the user account\n");
printf("usename\n");
for(i=0;inext==NULL)
mesg("Too few parametets!");
else if(command->next->next==NULL)
mesg("Too few parametets!");
else if(command->next->next->next!=NULL)
mesg("Too many parameters!");
else
{
strcpy(sourfile,command->next->string);
strcpy(destfile,command->next->next->string);
for(i=0;i=savenum)
printf("\n the source file not eixsted!");
else
{
for(i=0;i=opennum)
printf("\n the source file not opened!");
else
{
for(j=0;j=M)
mesg("copy false! file total limited.");
else
{
strcpy(userfd[savenum].filename,destfile);
userfd[savenum].lenght=userfd[temp].lenght;
userfd[savenum].protect=userfd[temp].protect;
savenum++;
fp=fopen(username,"w+");
for(i=0;inext==NULL)
mesg("Too few parametets!");
else if(command->next->next==NULL)
mesg("Too few parametets!");
else if(command->next->next->next!=NULL)
mesg("Too many parameters!");
else
{
strcpy(oldfile,command->next->string);
strcpy(newfile,command->next->next->string);
for(i=0;i=savenum)
printf("\n the source file not eixsted!");
else if(temp!=i&&i=opennum)
printf("\n the source file not opened!");
else if(strcmp(oldfile,newfile)==0)
{
printf("Rename false! oldfile and newfile can not be the same.");
}
else
{
strcpy(openfd[i].filename,newfile);
strcpy(userfd[temp].filename,newfile);
mesg("Rename file success!\n");
}
}
}
}