LIST 84

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

FILE *fp;
int ni[1000], m[15000], p[300][10], d_mode;
char n[300][60], tail[3];

static void access_flag_printf(int para);
static void byte_code_printf(long address);
static void display_information(int mode, int id);

int main(int argc,char **argv){
        int d, i, j, k, ct;
        unsigned int p0, p00, p1, p2, p3;
        int pp=0, count=0, p4, p5, sb;
        unsigned char ss, st[20], d0, d1, d2, d3;
        st[16]=0; tail[0]=59; tail[1]=0;
        d_mode=1;

        if( argc != 2 ){ printf("... target file name missing (;_;) ...\n\n"); exit(1); }
        else if( (fp=fopen( argv[1], "rb" ))==NULL ){ printf("... target file [ %s ] is not found (;_;) ...\n\n", argv[1]); exit(1); }
        if(d_mode==0) printf("Target Java File Name = %s\n", argv[1]);
        else if(d_mode==1) printf("/* Source Java File Name = %s */\n\nmain(){\n\tinit()%s\n\twhile(1){\n\t\trun()%s\n\t}\n}", argv[1], tail, tail);
        while( (d = fgetc(fp)) >= 0 ){
		m[count++] = d & 0xff; 
        }
        fclose(fp);
        if(d_mode==0) printf("\nTotal File Length = %d bytes.", count);
        p0 = m[pp+3]+256*m[pp+2];
        p00 = m[pp+1]+256*m[pp];
        if(d_mode==0) printf("\n\n\t%06X  Magic Code [CAFEBABE] = %04X%04X",pp,p00,p0); pp += 4;
        if(( p00 != 0xcafe )||( p0 != 0xbabe )){
		if(d_mode==0) printf("\n\n... target file is not Java (;_;) ...\n\n"); exit(1);
        }
        else if(d_mode==0) printf("  ---  OK (^_^)");
        if(d_mode==0) printf("\n\n\t%06X  Version : major version %d , minor version %d", pp, m[pp+3]+256*m[pp+2], m[pp+1]+256*m[pp] ); pp += 4;
        p1 = m[pp+1]+256*m[pp]; if(d_mode==0) printf("\n\n\t%06X  Constant Pool : total number = %d\n", pp, p1 ); pp += 2;
/***** Ãæά *****/
        p1 = m[pp+1]+256*m[pp]; pp += 2; if(d_mode==0) printf("\n\n\t%06X  Methods Count = %d", pp-2, p1 );
        for(i=0;i<p1;i++){
                if(d_mode==0) printf("\n\n\t\t%06X   method[%d] : ", pp, i);
                p2 = m[pp+1]+256*m[pp]; pp += 2; access_flag_printf( p2 );
                p2 = m[pp+1]+256*m[pp]; pp += 2;
	if((d_mode==1)&&( n[p2][0]=='<' )){
		printf("\n\n/*");
	}
	if(d_mode==1) printf("\n\n%s(){", n[p2] );
	else if(d_mode==0) printf(" , Name = %s", n[p2] );
	if((d_mode==1)&&( strcmp( n[p2], "init" ) != 0 )&&( strcmp( n[p2], "run" ) != 0 )&&( n[p2][0]!='<' )){
		printf("\n/*");
	}
	sb = p2;
                p2 = m[pp+1]+256*m[pp]; pp += 2; if(d_mode==0) printf(" , Signature = %s", n[p2] );
                p2 = m[pp+1]+256*m[pp]; pp += 2; if(d_mode==0) printf(" , Attribute = %d", p2 );
                if( p2 != 0 ){
                        if(d_mode==0) printf("\n");
                        for(j=0;j<p2;j++){
                                p3 = m[pp+1]+256*m[pp]; pp += 2;
                                if(d_mode==0) printf("\n\t\t\ttype = %s , ", n[p3] );
                                p4 = m[pp+3]+256*(m[pp+2]+256*(m[pp+1]+256*m[pp])); pp += 4;
                                if(d_mode==0) printf("length = %d", p4);
                                p5 = pp; pp += p4;
                                if( strcmp( n[p3], "Code" ) == 0 ) byte_code_printf( p5 );
                                else if( strcmp( n[p3], "Exceptions" ) == 0 ) byte_code_printf( p5 );
                        }
                }
	if((d_mode==1)&&( strcmp( n[sb], "init" ) != 0 )&&( strcmp( n[sb], "run" ) != 0 )&&( n[sb][0]!='<' )){
		printf("\n*/");
	}
	if(d_mode==1) printf("\n}");
	if((d_mode==1)&&( n[sb][0]=='<' )){
		printf("\n\n*/");
	}
        }
        p1 = m[pp+1]+256*m[pp]; pp += 2; if(d_mode==0) printf("\n\n\t%06X  Attributes Count = %d", pp-2, p1 );
        if( p1 != 0 ){
                for(i=0;i<p1;i++){
                        p2 = m[pp+1]+256*m[pp]; pp += 2;
                        if(d_mode==0) printf("\n\n\t\t%06X  attribute[%d] : type = %s , ", pp-2, i, n[p2] );
                        p4 = m[pp+3]+256*(m[pp+2]+256*(m[pp+1]+256*m[pp])); pp += 4;
                        p5 = pp;
                        if(d_mode==0) printf("length = %d\n", p4);
                        for(k=0;k<p4;k++){
                                if((k%25)==0) if(d_mode==0) printf("\n\t\t\t\t");
                                if(d_mode==0) printf("%02X ", m[pp++] );
                        }
                        if( ( p4 == 2 ) && ( strcmp( n[p2], "SourceFile" ) == 0 ) ){
                                p3 = m[p5+1]+256*m[p5];
                                if(d_mode==0) printf("\n\n\t\t\tSource File Name = %s", n[p3] );
                        }
                }
        }
        if(d_mode==0) printf("\n\n..... (^_^) Java analyze completely finished. (^_^)\n\n");		return;
}

/***** ¸åά *****/

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