src/main.c

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/*
* /giis/main.c The main procedure call.
*
* Copyright (C) 2005. G.Lakshmipathi.<lakshmipathi_g@rediffmail.com>
*
*/

#include "giis.h"

/*
* main() Responds to user inputs and calls appropriate procedure.
*/
 
int main(int argc,char *argv[])
{
int i=0,ans=-1,fp,line=1;
char a,x;
char sumkey[]="Enter Any key to Continue :-)";

do{
        if(argc>2){
        printf("giis : invalid option \n");
        printf("Type 'giis -h' for help \n");
        return 1;
        }
        
                /* process command line */

        if(argc==2){
        if(strcmp(argv[1],"-m")==0)     /* menu */
        ans=444;
        if(strcmp(argv[1],"-i")==0)     /* install */
        ans=0;
        if(strcmp(argv[1],"-u")==0)     /* update */
        ans=1;
        if(strcmp(argv[1],"-g")==0)     /* recover */   
        ans=2;
        if(strcmp(argv[1],"-d")==0)     /* System info. */      
        ans=3;
        if(strcmp(argv[1],"-f")==0)     /* giis info. */        
        ans=4;
        if(strcmp(argv[1],"-U")==0)     /* uninstall */ 
        ans=5;
        if(strcmp(argv[1],"-a")==0)     /* author */    
        ans=6;
        if(strcmp(argv[1],"-t")==0)     /* quotes */    
        ans=7;
        if(strcmp(argv[1],"-q")==0)     /* quits */     
        ans=8;
        
        if(strcmp(argv[1],"-h")==0){    /* help */
        printf("\nUsage: giis [OPTION]\n");
        printf("\nPossible options available with giis :");
        printf("\n  -a\t\t Info. about the author.");
        printf("\n  -d\t\t Displays your file system informations.");
        printf("\n  -f\t\t Displays giis system files.");
        printf("\n  -g\t\t Recovers the Given or all deleted files.");
        printf("\n  -h\t\t Prints this menu.");
        printf("\n  -i\t\t Will perform installation of giis.");
        printf("\n  -m\t\t Menu based user interaction.");
        printf("\n  -q\t\t Exit giis");
        printf("\n  -t\t\t Some quotes and thoughts.");
        printf("\n  -u\t\t Updates giis to reflect current status.");
        printf("\n  -U\t\t Uninstalls giis.\n"); 
        printf("\nReport bugs to <lakshmipathi.g@gmail.com>\n");
        return 1;
        }
        if((ans!=444) &&  (ans<0 || ans>8)){
                printf("giis : invalid option \n");
                printf("Type 'giis -h' for help.\n");
                return 1;
                }

        
        }
        if(argc==1)                                     /* default is menu.*/
        ans=444;

        if(ans==444){
        system("clear");
        printf("\n\t\t ===================================================");
        printf("\n\t\t  gET iT i sAY. giis - Ext3/Ext2 File Undelete Tool ");
        printf("\n\t\t ===================================================\n");
        printf("\n\tPress 0 : Install \n\tPress 1 : Update Now\n\tPress 2 : File Recovery");
        printf("\n\tPress 3 : Your File System Details");
        printf("\n\tPress 4 : giis File Details \n\tPress 5 : Uninstall");
        printf("\n\tPress 6 : About giis ");
        printf("\n\tPress 7 : Quotes \n\tPress 8 : Exit");
        printf("\n\n\t\tEnter Your choice : ");
        scanf("%d",&ans);
        } 
        
        if(ans==4){
                fp=open(INSTALL_DIR1,0);
                if(errno==ENOENT){
                printf("\n\t\tgiis Not installed...\n");
                printf("\t\t\t...So install giis and then try this..\n\n ");
                close(fp);
                return 1;
                }
                close(fp);
                
                i=read_dir_info_file();
                CHECK
                printf("\n File Info File");
                i=read_file_info_file();
                CHECK

                return 1;
                }


        if(ans==8){
                printf("\n\t Quiting giis....");
                printf("\n\n\t Bye...Bye...!!!\n\n");
                return 1;
                }
                
        if(ans==5){
                i=remove_giis();
                CHECK
                return 1;
                }
                
        if(ans==6){
        
                system("clear");
                fp=open("/giis/hai",0);
                CHECK
                i=read(fp,&a,1);
                CHECK
                while(i>0){
                write(1,&a,1);
                i=read(fp,&a,1);
                }
                close(fp);
                return 1;
                }
        if(ans==7){
        
                system("clear");
                fp=open("/giis/quotes",0);
                CHECK
                i=read(fp,&a,1);
                CHECK
                        while(i>0){
                        if(a=='\n')
                        line++;
                        write(1,&a,1);
                        i=read(fp,&a,1);
                        if((line%24)==0){
                        line++;
                        write(1,sumkey,strlen(sumkey));
                        read(0,&x,1);
                        }
                        }
                close(fp);
                return 1;
                }

                        
                

}while(!(ans>=0 && ans<=8));

        /* Check for installation */
        if(ans==0){
        install=1;       
        fp=open(INSTALL_DIR1,0);
        if(fp!=-1){
                printf("\n\t\tgiis already installed in your system...\n");
                printf("\t\tTry giis -U or manually delete /giis to install freshly...\n ");
                close(fp);
                return 2;
                }
        }
        
        if(ans==1 || ans==2 || ans==3){
        fp=open(INSTALL_DIR1,0);
        if(errno==ENOENT){
                printf("\n\t\tgiis Not installed...\n");
                printf("\t\t\t...So install giis and then try this ;)\n ");
                close(fp);
                return 1;
        }
        close(fp);
        }
        
        printf("\nSearching for file system....");
        if(init()==-1){
                printf("\n\nFile System not is Initialized....Aborting....\n");
                exit(1);        
        }
                
if(ans==0)
{
        install=1;update_file=0;/* Used to call update_dir_info_file() */
        update_dir=0;
        fs.inode_number=ROOT_INODE; /* Get Root inode offset to fs.root_inode_offset.First.*/
        i=find_inode_offset();
        CHECK
        
        i=read_inode();
        CHECK

        i=set_content_offset();
        CHECK
        if(dir){        /* If inode is a directory then Show its content  */
                i=read_dir();
                CHECK
                i=show_dir();     
                CHECK
                }
}

                        /* Display File System Details */
        
        if(ans==3){
                fs.inode_number=ROOT_INODE; /* Get Root inode offset */
                i=find_inode_offset();
                CHECK
                i=fs_display();
                CHECK
                return 1;
        }


if(ans==0 || ans==1){
if(ans==1){
install=0;
update_file=1;update_dir=1;
}

i=search4dir();             /* searches for directory in DIR_INFO_FILE */       
CHECK
        if(ans==0){
        get_sample_data();
        printf("\n\n\t\tgiis - Installtion completed...");
        }
}

        
if(ans==2){

        
        printf("\n\nHow do you want to recover files?");
        printf("\n\t Press 0 : Get All User files ");
        printf("\n\t Press 1 : Get Specific User files");
        printf("\n\t Press 2 : force giis - giis dump");
        printf("\n\t Press 3 : Get By File Format\n");
        printf("\n\t\tEnter Your Choice : ");
        scanf("%d",&ans);
                        
                if(ans>=0 && ans <=3)
                use_uid=ans;
                else{
                printf("\n\n\t\tPlease Enter correct Choice");
                return 1;
                }
                                
                install=0;
                get_it();                       /* Search for deleted file */
        }               
return 1;
}

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