DAC.rar_visual c_工程控制

#include "DAC_Global.h" char currentuser[20]; subject *hsubject; subject *currentsubject; object *hobject; right *hright; authorize *hauthorize; void Dac() { hsubject=(subject *)malloc(sizeof(subject)); hsubject->groupid=1; hsubject->next=NULL; strcpy_s(hsubject->password,20,"admin"); strcpy_s(hsubject->username,20,"admin"); hobject=(object *)malloc(sizeof(object)); hright=(right *)malloc(sizeof(right)); hauthorize=(authorize *)malloc(sizeof(authorize)); hobject->next=NULL; hright->next=NULL; hauthorize->next=NULL; Menu(); } UCHAR Login(char *user,char *password) { subject *p=hsubject; while(p!=NULL) { if(!strcmp(user,p->username)&&!strcmp(password,p->password)) { strcpy_s(currentuser,20,p->username); currentsubject=p; printf("%s has login successful\n",currentuser); return SUCCESS; } else p=p->next; } printf("username or password error\n"); return USER_PASS_ERROR; } UCHAR AddSub(char *user,char *pass) { subject *p=hsubject; if(strcmp("admin",currentuser)!=0) { printf("add subject failed,please check your right!\n"); return RIGHT_ERROR; } while(p->next!=NULL) { if(strcmp(user,p->username)==0) { printf("already have a %s\n",user); return SUBJECT_RENAME; } else p=p->next; } if(strcmp(user,p->username)==0) { printf("already have a %s\n",user); return SUBJECT_RENAME; } p->next=(subject *)malloc(sizeof(subject)); p->next->groupid=0; p->next->next=NULL; strcpy_s(p->next->username,20,user); strcpy_s(p->next->password,20,pass); return SUCCESS; } UCHAR DelSub(char *user) { subject *current=hsubject,*p=hsubject; if(strcmp("admin",currentuser)!=0) { printf("delete subject failed,please check your right!\n"); return RIGHT_ERROR; } while(current!=NULL&&strcmp(current->username,user)) { p=current; current=current->next; } if(!current) { printf("can't find the subject\n"); return NO_SUBJECT ; } else { p->next=current->next; free(current); } return SUCCESS; } UCHAR Logout() { currentsubject=NULL; strcpy_s(currentuser,20," "); return SUCCESS; } UCHAR CreatObj(char *objname) { object *objp=hobject; right *rightp=hright; int i; UCHAR r=1; while(objp->next!=NULL) { if(!strcmp(objp->objname,objname)) { printf("客体重名！\n"); return OBJECT_RENAME; } else objp=objp->next; } objp->next=(object *)malloc(sizeof(object)); objp->next->next=NULL; strcpy_s(objp->next->objname,20,objname); strcpy_s(objp->next->owner,20,currentuser); while(rightp->next!=NULL) { rightp=rightp->next; } for(i=0;i<5;i++) { rightp->next=(right *)malloc(sizeof(right)); strcpy_s(rightp->next->username,20,currentuser); strcpy_s(rightp->next->objname,20,objname); rightp->next->cangive=1; rightp->next->next=NULL; strcpy_s(rightp->next->whogive,20,currentuser); rightp->next->rights=r; r*=2; rightp=rightp->next; } return SUCCESS; } UCHAR TestRight(char *objname,UCHAR rights) { right *rightp=hright; while(rightp!=NULL) { if(!strcmp(rightp->objname,objname)&&!strcmp(rightp->username,currentuser)) { if(((rightp->rights)&rights)!=0) break; else rightp=rightp->next; } else rightp=rightp->next; } if(rightp==NULL) return NO_RIGHTS; else return HAVE_RIGHTS; } UCHAR GiveRights(char *objectname,char *authorizedsub,UCHAR rights,int cangive) { right *rightp=hright; authorize *authorizep=hauthorize; subject *subjectp=hsubject; while(rightp) { if(!strcmp(rightp->username,currentuser)&&!strcmp(rightp->objname,objectname)&&rightp->rights==rights&&rightp->cangive==1) break; else rightp=rightp->next; } if(rightp==NULL) return NO_RIGHTS; else rightp=hright; while(subjectp) { if(!strcmp(subjectp->username,authorizedsub)) break; else subjectp=subjectp->next; } if(subjectp==NULL) return NO_SUBJECT; else { while(rightp->next!=NULL) { if(rightp->cangive==cangive&&!strcmp(rightp->objname,objectname)&&!strcmp(rightp->username, authorizedsub)&&rightp->rights==rights&&!strcmp(rightp->whogive,currentuser)) return REAUTHORIZE; else rightp=rightp->next; } rightp->next=(right *)malloc(sizeof(right)); rightp->next->cangive=cangive; rightp->next->next=NULL; strcpy_s(rightp->next->objname,20,objectname); strcpy_s(rightp->next->username,20,authorizedsub); rightp->next->rights=rights; strcpy_s(rightp->next->whogive,20,currentuser); while(authorizep->next!=NULL) { authorizep=authorizep->next; } authorizep->next=(authorize *)malloc(sizeof(authorize)); authorizep=authorizep->next; strcpy_s(authorizep->authorizer,20,currentuser); strcpy_s(authorizep->authorizedsub,20,authorizedsub); authorizep->next=NULL; strcpy_s(authorizep->objectname,20,objectname); authorizep->rights=rights; authorizep->cangive=cangive; return SUCCESS; } } UCHAR RevokeRights(char *authorizer,char *authorizedsub,char *objname,UCHAR rights) { _deleteFromright(authorizer,authorizedsub,objname,rights); _deleteFromauthorize(authorizer,authorizedsub,objname,rights); if(_continue(authorizedsub,objname,rights)) _passRevoke(authorizer,authorizedsub,objname,rights); else return SUCCESS; } UCHAR _deleteFromright(char *authorizer,char *authorizedsub,char *objname,UCHAR rights) { right *pright=hright,*cpright=hright; while(pright!=NULL) { if(!strcmp(pright->whogive,authorizer)&&!strcmp(pright->username,authorizedsub)&&!strcmp(pright-> objname,objname)&&pright->rights==rights) { break; } cpright=pright; pright=pright->next; } if(!pright) return NO_RIGHTS; else { cpright->next=pright->next; free(pright); } return SUCCESS; } UCHAR _deleteFromauthorize(char *authorizer,char *authorizedsub,char *objname,UCHAR rights) { authorize *pauthorize=hauthorize,*cauthorzie=hauthorize; while(pauthorize!=NULL) { if(!strcmp(pauthorize->objectname,objname)&&!strcmp(pauthorize->authorizedsub,authorizedsub)&& pauthorize->rights==rights&&!strcmp(pauthorize->authorizer,authorizer)) break; cauthorzie=pauthorize; pauthorize=pauthorize->next; } if(pauthorize==NULL) return NO_RIGHTS; else { cauthorzie->next=pauthorize->next; free(pauthorize); return SUCCESS; } } BOOL _continue(char *authorizedsub,char *objname,UCHAR rights) { authorize *pauthorize=hauthorize->next; while(pauthorize!=NULL) { if(!strcmp(pauthorize->authorizedsub,authorizedsub)&&!strcmp(pauthorize->objectname,objname)&& pauthorize->rights==rights&&pauthorize->cangive==1) break; else pauthorize=pauthorize->next; } if(pauthorize==NULL) return TRUE; else return FALSE; } UCHAR _passRevoke(char *authorizer,char *authorizedsub,char *objname,UCHAR rights) { authorize *pauthorize=hauthorize->next; char temp[20]; while(pauthorize!=NULL) { if(!strcmp(pauthorize->authorizer,authorizedsub)&&pauthorize->rights==rights&&!strcmp(pauthorize-> objectname,objname)) { strcpy_s(temp,20,pauthorize->authorizedsub); pauthorize=pauthorize->next; RevokeRights(authorizedsub,temp,objname,rights); } else pauthorize=pauthorize->next; } return SUCCESS; } UCHAR SaveData() { FILE *savesubject,*saveobject,*saveright,*saveauthorize; subject *psubject=hsubject->next; object *pobject=hobject->next; right *pright=hright->next; authorize *pauthorize=hauthorize->next; _mkdir("\\database"); _chdir("\\database"); if((savesubject=fopen("subject.mdb","w"))==NULL) return SAVE_ERROR; if((saveobject=fopen("object.mdb","w"))==NULL) return SAVE_ERROR; if((saveright=fopen("right.mdb","w"))==NULL) return SAVE_ERROR; if((saveauthorize=fopen("authorize.mdb",