size_t btFiles::FillMetaInfo(FILE* fp)
{
BTFILE *p;
if( m_directory ){
// multi files
if( bencode_str("files", fp) != 1 ) return 0;
if( bencode_begin_list(fp) != 1) return 0;
for( p = m_btfhead; p; p = p->bf_next){
if( bencode_begin_dict(fp) != 1) return 0;
if( bencode_str("length", fp) != 1 ) return 0;
if( bencode_int(p->bf_length, fp) != 1) return 0;
if( bencode_str("path", fp) != 1) return 0;
if( bencode_path2list(p->bf_filename, fp) != 1 ) return 0;
if( bencode_end_dict_list(fp) != 1) return 0;
}
if(bencode_end_dict_list(fp) != 1 ) return 0;
if(bencode_str("name", fp) != 1) return 0;
return bencode_str(m_directory, fp);
}else{
if( bencode_str("length", fp) != 1 ) return 0;
if( bencode_int(m_btfhead->bf_length, fp) != 1) return 0;
if( bencode_str("name", fp) != 1 ) return 0;
return bencode_str(m_btfhead->bf_filename, fp);
}
return 1;
}
int btContent::CreateMetainfoFile(const char *mifn)
{
FILE *fp;
fp = fopen(mifn, "r");
if( fp ){
fprintf(stderr,"error, file %s already exist.\n",mifn);
return -1;
}else if( ENOENT != errno ){
fprintf(stderr,"error, couldn't create %s.\n",mifn);
return -1;
}
fp = fopen(mifn, "w");
if( !fp ){
fprintf(stderr,"error, open %s failed. %s\n",mifn, strerror(errno));
return -1;
}
if( bencode_begin_dict(fp) != 1 ) goto err;
// announce
if( bencode_str("announce", fp) != 1 ) goto err;
if( bencode_str(m_announce, fp) !=1 ) goto err;
// create date
if( bencode_str("creation date", fp) != 1) goto err;
if( bencode_int(m_create_date, fp) != 1 ) goto err;
// info dict
if( bencode_str("info", fp) != 1) goto err;
if( bencode_begin_dict(fp) != 1 ) goto err;
if( m_btfiles.FillMetaInfo(fp) != 1 ) goto err;
// piece length
if( bencode_str("piece length", fp) != 1 ) goto err;
if( bencode_int(m_piece_length, fp) != 1 ) goto err;
// hash table;
if( bencode_str("pieces", fp) != 1) goto err;
if( bencode_buf((const char*) m_hash_table, m_hashtable_length, fp) != 1 ) goto err;
if( bencode_end_dict_list(fp) != 1 ) goto err; // end info
if( bencode_end_dict_list(fp) != 1 ) goto err; // end torrent
fclose(fp);
return 0;
err:
if( fp ) fclose(fp);
return -1;
}
size_t bencode_path2list(const char *pathname, FILE *fp)
{
const char *pn;
const char *p = pathname;
if( bencode_begin_list(fp) != 1 ) return 0;
//acw
char *pBuf = new char[strlen(pathname) * 6 + 1];
if(!(CSC(pBuf, (char*)pathname, strlen(pathname) * 6 + 1, strlen(pathname), '\0'))) p = pBuf;
for(; *p;){
pn = strchr(p, PATH_SP);
if( pn ){
//acw
// if( bencode_buf(p, pn - p, fp) != 1) return 0;
if( bencode_buf(p, pn - p, fp) != 1) {delete []pBuf; return 0;}
p = pn + 1;
}else{
//acw
// if( bencode_str(p, fp) != 1) return 0;
if( bencode_str(p, fp) != 1) {delete []pBuf; return 0;}
break;
}
}
//acw
delete []pBuf;
return bencode_end_dict_list(fp);
}
size_t bencode_path2list(const char *pathname, FILE *fp)
{
const char *pn;
const char *p = pathname;
if( bencode_begin_list(fp) != 1 ) return 0;
for(; *p;){
pn = strchr(p, PATH_SP);
if( pn ){
if( bencode_buf(p, pn - p, fp) != 1) return 0;
p = pn + 1;
}else{
if( bencode_str(p, fp) != 1) return 0;
break;
}
}
return bencode_end_dict_list(fp);
}