iTunesLibPerIDfix.c

/* 

Opposite of the easy way: 
http://aladino.dmi.unict.it/?a=unlocker


iTunes Unlocker - Copyright (C) 2009 Costantino Pistagna - valvoline@gmail.com 

This program is free software: you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation, either version 3 of the License, or 
(at your option) any later version. 

This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details. 

You should have received a copy of the GNU General Public License 
along with this program. If not, see <http://www.gnu.org/licenses/>. 

This program comes with ABSOLUTELY NO WARRANTY; This is free software, 
and you are welcome to redistribute it under certain conditions. 

-- 
happy 'tuning! 
valv0 
*/ 


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

int main(int argc, char **argv) { 
FILE *fp; 
int i; 
char buffer[1024]; 
char *buf; 
char *ptr; 
char *ptr2; 
char ID[128]; 
long pos; 


if((argc == 3 && strcmp(argv[1], "g") != 0) || (argc == 4 && strcmp(argv[1], "s") != 0) || argc < 3) {
printf("\niTunes Library Unlocker v0.1 - (c) 2009 valv0 - valvoline@gmail.com\n-------------------------------------------------------------------\nusage:\n\tto obtain your current iTunes ID, type:\n\tunlockiTunes g <iTunes Music Library.xml>\n\n\tto unlock your iTunes library with a provided ID, type:\n\tunlockiTunes s ID <iTunes Music Library.xml> <iTunes Library>\n\n"); 
exit(1); 
} 
if(argc == 3) { 
if ( (fp=fopen(argv[2], "r+")) == NULL ) { 
printf("something goes wrong with your XML Library file!...aborting!\n\n"); 
exit(1); 
} 
printf("searching your personal magic key..."); 
while(!feof(fp)) { 
pos=ftell(fp); 
fgets(buffer, 1024, fp); 
if( (ptr=strstr(buffer, "<key>Library Persistent ID</key><string>")) != NULL) { 
bzero(ID, 128); 
memcpy(ID, ptr+40, 16); 
printf("OK!\n\nyour ID is: %s\n\ncopy it in a secure place!\n", ID); 
break; 
} 

} 
fclose(fp); 
} 
if(argc == 5) { 
if ( (fp=fopen(argv[3], "r+")) == NULL ) { 
printf("something goes wrong with your XML Library file!...aborting!\n\n"); 
exit(1); 
} 
fseek(fp, 0, SEEK_END); 
pos = ftell(fp); 
fseek(fp, 0, SEEK_SET);	
buf = calloc(1, sizeof(char)*pos); 
fread(buf, sizeof(unsigned char), pos, fp); 
fclose(fp); 
ptr = strstr(buf, "<key>Library Persistent ID</key><string>"); 
if(ptr == NULL) { 
printf("something goes wrong with substituting...aborting!\n"); 
exit(1); 
} 
strncpy(ptr+40, argv[2], 16); 
if ( (fp=fopen(argv[3], "w")) == NULL ) { 
printf("something goes wrong with your XML Library file!...aborting!\n\n"); 
exit(1); 
} 
fwrite(buf, sizeof(unsigned char), pos, fp); 
fclose(fp); 
free(buf); 
if ( (fp=fopen(argv[4], "r+")) == NULL ) { 
printf("something goes wrong with your Library file!...aborting!\n\n"); 
exit(1); 
} 
fseek(fp, 0, SEEK_END); 
pos = ftell(fp); 
fseek(fp, 0, SEEK_SET); 
buf = calloc(1, sizeof(char)*pos); 
fread(buf, sizeof(unsigned char), pos, fp); 
fclose(fp); 
ptr2 = calloc(1, 2*sizeof(char)); 
for(i=0;i<8;i++) { 
bzero(ptr2, 2); 
strncpy(ptr2, argv[2]+(i*2), 2); 
buf[52+i] = strtoul(ptr2, NULL, 16); 
} 
if ( (fp=fopen(argv[4], "w")) == NULL ) { 
printf("something goes wrong with your Library file!...aborting!\n\n"); 
exit(1); 
} 
fwrite(buf, sizeof(unsigned char), pos, fp); 
fclose(fp); 
free(buf); 
printf("your iTunes was unlocked! Enjoy!\n"); 
} 
return 0; 
}