int btTracker::_UpdatePeerList(char *buf, size_t bufsiz)
{
char tmphost[MAXHOSTNAMELEN + 1] = {'\0'};
char warnmsg[1024] = {'\0'};
char failreason[1024] = {'\0'};
const char *ps = NULL;
size_t i, pos, tmpport;
size_t cnt = 0;
struct sockaddr_in addr = {0, 0,
{0},
{0}};
memset((void *) &addr, 0, sizeof(addr));
if (decode_query(buf, bufsiz, "failure reason", &ps, &i, (int64_t *) 0, QUERY_STR)) {
if (i < 1024) {
memcpy(failreason, ps, i);
failreason[i] = '\0';
} else {
memcpy(failreason, ps, 1000);
failreason[1000] = '\0';
strcat(failreason, "...");
}
CONSOLE.Warning(1, "TRACKER FAILURE REASON: %s", failreason);
return -1;
}
if (decode_query
(buf, bufsiz, "warning message", &ps, &i, (int64_t *) 0,
QUERY_STR)) {
if (i < 1024) {
memcpy(warnmsg, ps, i);
warnmsg[i] = '\0';
} else {
memcpy(warnmsg, ps, 1000);
warnmsg[1000] = '\0';
strcat(warnmsg, "...");
}
CONSOLE.Warning(2, "TRACKER WARNING: %s", warnmsg);
}
m_peers_count = m_seeds_count = 0;
if (decode_query
(buf, bufsiz, "tracker id", &ps, &i, (int64_t *) 0, QUERY_STR)) {
if (i <= PEER_ID_LEN) {
memcpy(m_trackerid, ps, i);
m_trackerid[i] = '\0';
} else {
memcpy(m_trackerid, ps, PEER_ID_LEN);
m_trackerid[PEER_ID_LEN] = '\0';
}
}
if (!decode_query(buf, bufsiz, "interval", (const char **) 0, &i,
(int64_t *) 0, QUERY_INT))
return -1;
if (m_interval != (time_t) i)
m_interval = (time_t) i;
if (m_default_interval != (time_t) i)
m_default_interval = (time_t) i;
if (decode_query(buf, bufsiz, "complete", (const char **) 0, &i, (int64_t *) 0, QUERY_INT))
m_seeds_count = i;
if (decode_query(buf, bufsiz, "incomplete", (const char **) 0, &i, (int64_t *) 0, QUERY_INT))
m_peers_count = m_seeds_count + i;
else {
if (arg_verbose && 0 == m_seeds_count)
CONSOLE.Debug("Tracker did not supply peers count.");
m_peers_count = m_seeds_count;
}
pos = decode_query(buf, bufsiz, "peers", (const char **) 0, (size_t *) 0, (int64_t *) 0, QUERY_POS);
if (!pos) {
return -1;
}
if (4 > bufsiz - pos) {
return -1;
} // peers list ̫С
buf += (pos + 1);
bufsiz -= (pos + 1);
ps = buf - 1;
if (*ps != 'l') { // binary peers section if not 'l'
addr.sin_family = AF_INET;
i = 0;
while (*ps != ':')
i = i * 10 + (*ps++ -'0');
i /= 6;
ps++;
while (i-- > 0) {
memcpy(&addr.sin_addr, ps, sizeof(struct in_addr));
memcpy(&addr.sin_port, ps + sizeof(struct in_addr), sizeof(unsigned short));
if (!Self.IpEquiv(addr)) {
cnt++;
IPQUEUE.Add(&addr);
}
ps += 6;
}
} else
for (; bufsiz && *buf != 'e'; buf += pos, bufsiz -= pos) {
pos = decode_dict(buf, bufsiz, (char *) 0);
if (!pos)
break;
if (!decode_query
(buf, pos, "ip", &ps, &i, (int64_t *) 0, QUERY_STR)
|| MAXHOSTNAMELEN < i)
continue;
memcpy(tmphost, ps, i);
tmphost[i] = '\0';
if (!decode_query
(buf, pos, "port", (const char **) 0, &tmpport,
(int64_t *) 0, QUERY_INT))
continue;
if (!decode_query
(buf, pos, "peer id", &ps, &i, (int64_t *) 0,
QUERY_STR) && i != 20)
continue;
if (_IPsin(tmphost, tmpport, &addr) < 0) {
CONSOLE.Warning(3, "warn, detected invalid ip address %s.", tmphost);
continue;
}
if (!Self.IpEquiv(addr)) {
cnt++;
IPQUEUE.Add(&addr);
}
}
if (0 == m_peers_count) {
m_peers_count = cnt + 1; // include myself
m_f_boguspeercnt = 1;
} else
m_f_boguspeercnt = 0;
if (arg_verbose)
CONSOLE.Debug("new peers=%d; next check in %d sec",
(int) cnt, (int) m_interval);
return 0;
}
dt_result_t btTracker::ParseResponse(const char *buf, size_t bufsiz)
{
char tmphost[MAXHOSTNAMELEN];
const char *ps;
size_t i, pos, tmpport;
int64_t bint;
dt_count_t cnt = 0;
struct sockaddr_in addr;
if( decode_query(buf, bufsiz, "failure reason", &ps, &i, (int64_t *)0,
DT_QUERY_STR) ){
char failreason[1024];
if( i < 1024 ){
memcpy(failreason, ps, i);
failreason[i] = '\0';
}else{
memcpy(failreason, ps, 1000);
failreason[1000] = '\0';
strcat(failreason, "...");
}
CONSOLE.Warning(1, "TRACKER FAILURE from %s: %s", m_spec->url, failreason);
return DT_FAILURE;
}
if( decode_query(buf, bufsiz, "warning message", &ps, &i, (int64_t *)0,
DT_QUERY_STR) ){
char warnmsg[1024];
if( i < 1024 ){
memcpy(warnmsg, ps, i);
warnmsg[i] = '\0';
}else{
memcpy(warnmsg, ps, 1000);
warnmsg[1000] = '\0';
strcat(warnmsg, "...");
}
CONSOLE.Warning(2, "TRACKER WARNING from %s: %s", m_spec->url, warnmsg);
}
m_peers_count = m_seeds_count = 0;
if( decode_query(buf, bufsiz, "tracker id", &ps, &i, (int64_t *)0,
DT_QUERY_STR) ){
if( i <= PEER_ID_LEN ){
memcpy(m_trackerid, ps, i);
m_trackerid[i] = '\0';
}else{
memcpy(m_trackerid, ps, PEER_ID_LEN);
m_trackerid[PEER_ID_LEN] = '\0';
}
}
if( decode_query(buf, bufsiz, "interval", (const char **)0, NULL, &bint,
DT_QUERY_INT) ){
m_interval = m_default_interval = (time_t)bint;
}else{
CONSOLE.Debug("Tracker at %s did not specify interval.", m_spec->url);
m_interval = m_default_interval;
}
if( decode_query(buf, bufsiz, "complete", (const char **)0, NULL, &bint,
DT_QUERY_INT) ){
m_seeds_count = bint;
}
if( decode_query(buf, bufsiz, "incomplete", (const char **)0, NULL, &bint,
DT_QUERY_INT) ){
m_peers_count = m_seeds_count + bint;
}else{
if( *cfg_verbose && 0==m_seeds_count )
CONSOLE.Debug("Tracker at %s did not supply peers count.", m_spec->url);
m_peers_count = m_seeds_count;
}
pos = decode_query(buf, bufsiz, "peers", (const char **)0, (size_t *)0,
(int64_t *)0, DT_QUERY_POS);
if( !pos ){
CONSOLE.Debug("Tracker at %s did not supply peers.", m_spec->url);
return DT_FAILURE;
}
if( 4 > bufsiz - pos ){
CONSOLE.Debug("Tracker at %s supplied an invalid peers list.", m_spec->url);
return DT_FAILURE;
}
buf += (pos + 1);
bufsiz -= (pos + 1);
ps = buf-1;
if( *ps != 'l' ){ // binary peers section if not 'l'
addr.sin_family = AF_INET;
i = 0;
while( *ps != ':' ) i = i * 10 + (*ps++ - '0');
i /= 6;
ps++;
while( i-- > 0 ){
memcpy(&addr.sin_addr, ps, sizeof(struct in_addr));
memcpy(&addr.sin_port, ps+sizeof(struct in_addr), sizeof(unsigned short));
if( !Self.IpEquiv(addr) ){
cnt++;
IPQUEUE.Add(&addr);
}
ps += 6;
}
}else for( ; bufsiz && *buf != 'e'; buf += pos, bufsiz -= pos ){
pos = decode_dict(buf, bufsiz, (char *)0);
if( !pos ) break;
if( !decode_query(buf, pos, "ip", &ps, &i, (int64_t *)0, DT_QUERY_STR) ||
MAXHOSTNAMELEN < i ){
continue;
}
memcpy(tmphost, ps, i);
tmphost[i] = '\0';
if( !decode_query(buf, pos, "port", (const char **)0, NULL, &bint,
DT_QUERY_INT) ){
continue;
}
tmpport = bint;
if( !decode_query(buf, pos, "peer id", &ps, &i, (int64_t *)0,
DT_QUERY_STR) && i != 20 ){
continue;
}
if( _IPsin(tmphost, tmpport, &addr) < 0 ){
CONSOLE.Warning(3, "warn, detected invalid ip address %s.", tmphost);
continue;
}
if( !Self.IpEquiv(addr) ){
cnt++;
IPQUEUE.Add(&addr);
}
}
if( 0==m_peers_count ){
m_peers_count = cnt + 1; // include myself
m_f_boguspeercnt = 1;
}else m_f_boguspeercnt = 0;
if(*cfg_verbose) CONSOLE.Debug("new peers=%d; next check in %d sec [%s]",
(int)cnt, (int)m_interval, m_spec->url);
return DT_SUCCESS;
}
int btFiles::BuildFromMI(const char *metabuf, const size_t metabuf_len, const char *saveas)
{
char path[MAXPATHLEN];
const char *s, *p;
size_t r,q,n;
int64_t t;
int f_warned = 0;
if( !decode_query(metabuf, metabuf_len, "info|name", &s, &q, (int64_t*)0,
QUERY_STR) || MAXPATHLEN <= q )
return -1;
memcpy(path, s, q);
path[q] = '\0';
r = decode_query(metabuf, metabuf_len, "info|files", (const char**)0, &q,
(int64_t*)0, QUERY_POS);
if( r ){
BTFILE *pbf_last = (BTFILE*) 0;
BTFILE *pbf = (BTFILE*) 0;
size_t dl;
if( decode_query(metabuf,metabuf_len,"info|length",
(const char**) 0,(size_t*) 0,(int64_t*) 0,QUERY_LONG) )
return -1;
if( saveas ){
m_directory = new char[strlen(saveas) + 1];
#ifndef WINDOWS
if(!m_directory) return -1;
#endif
strcpy(m_directory,saveas);
}else{
int f_conv;
char *tmpfn = new char[strlen(path)*2+5];
#ifndef WINDOWS
if( !tmpfn ) return -1;
#endif
if( f_conv = ConvertFilename(tmpfn, path, strlen(path)*2+5) ){
if( arg_flg_convert_filenames ){
m_directory = new char[strlen(tmpfn) + 1];
#ifndef WINDOWS
if( !m_directory ){
delete []tmpfn;
return -1;
}
#endif
strcpy(m_directory,tmpfn);
}else{
CONSOLE.Warning(3,
"Dir name contains non-printable characters; use -T to convert.");
f_warned = 1;
}
}
delete []tmpfn;
if( !f_conv || !arg_flg_convert_filenames ){
m_directory = new char[strlen(path) + 1];
#ifndef WINDOWS
if( !m_directory ) return -1;
#endif
strcpy(m_directory,path);
}
}
/* now r saved the pos of files list. q saved list length */
p = metabuf + r + 1;
q--;
for(; q && 'e' != *p; p += dl, q -= dl){
if(!(dl = decode_dict(p, q, (const char*) 0)) ) return -1;
if( !decode_query(p, dl, "length", (const char**) 0,
(size_t*) 0,&t,QUERY_LONG) ) return -1;
pbf = _new_bfnode();
#ifndef WINDOWS
if( !pbf ) return -1;
#endif
pbf->bf_length = t;
m_total_files_length += t;
r = decode_query(p, dl, "path", (const char **)0, &n, (int64_t*)0,
QUERY_POS);
if( !r ) return -1;
if(!decode_list2path(p + r, n, path)) return -1;
int f_conv;
char *tmpfn = new char[strlen(path)*2+5];
#ifndef WINDOWS
if( !tmpfn ) return -1;
#endif
if( f_conv = ConvertFilename(tmpfn, path, strlen(path)*2+5) ){
if( arg_flg_convert_filenames ){
pbf->bf_filename = new char[strlen(tmpfn) + 1];
#ifndef WINDOWS
if( !pbf->bf_filename ){
delete []tmpfn;
return -1;
}
#endif
strcpy(pbf->bf_filename, tmpfn);
}else if(!f_warned){
CONSOLE.Warning(3,
"Filename contains non-printable characters; use -T to convert.");
f_warned = 1;
}
}
delete []tmpfn;
if( !f_conv || !arg_flg_convert_filenames ){
pbf->bf_filename = new char[strlen(path) + 1];
#ifndef WINDOWS
if( !pbf->bf_filename ) return -1;
#endif
strcpy(pbf->bf_filename, path);
}
if(pbf_last) pbf_last->bf_next = pbf; else m_btfhead = pbf;
pbf_last = pbf;
}
}else{
if( !decode_query(metabuf,metabuf_len,"info|length",
(const char**) 0,(size_t*) 0,&t,QUERY_LONG) )
return -1;
m_btfhead = _new_bfnode();
#ifndef WINDOWS
if( !m_btfhead) return -1;
#endif
m_btfhead->bf_length = m_total_files_length = t;
if( saveas ){
m_btfhead->bf_filename = new char[strlen(saveas) + 1];
#ifndef WINDOWS
if(!m_btfhead->bf_filename ) return -1;
#endif
strcpy(m_btfhead->bf_filename, saveas);
}else if( arg_flg_convert_filenames ){
char *tmpfn = new char[strlen(path)*2+5];
#ifndef WINDOWS
if( !tmpfn ) return -1;
#endif
ConvertFilename(tmpfn, path, strlen(path)*2+5);
m_btfhead->bf_filename = new char[strlen(tmpfn) + 1];
#ifndef WINDOWS
if( !m_btfhead->bf_filename ){
delete []tmpfn;
return -1;
}
#endif
strcpy(m_btfhead->bf_filename, tmpfn);
delete []tmpfn;
}else{
m_btfhead->bf_filename = new char[strlen(path) + 1];
#ifndef WINDOWS
if(!m_btfhead->bf_filename ) return -1;
#endif
strcpy(m_btfhead->bf_filename, path);
}
}
return 0;
}
int btFiles::BuildFromMI(const char *metabuf, const size_t metabuf_len, const char *saveas)
{
char path[MAXPATHLEN];
const char *s, *p;
size_t r,q,n;
if( !decode_query(metabuf, metabuf_len, "info|name",&s,&q,QUERY_STR) ||
MAXPATHLEN <= q) return -1;
memcpy(path, s, q);
path[q] = '\0';
r = decode_query(metabuf,metabuf_len,"info|files",(const char**) 0, &q,QUERY_POS);
if( r ){
BTFILE *pbf_last = (BTFILE*) 0;
BTFILE *pbf = (BTFILE*) 0;
size_t dl;
if( decode_query(metabuf,metabuf_len,"info|length",
(const char**) 0,(size_t*) 0,QUERY_INT) )
return -1;
if( saveas ){
m_directory = new char[strlen(saveas) + 1];
#ifndef WINDOWS
if(!m_directory) return -1;
#endif
strcpy(m_directory,saveas);
}else{
m_directory = new char[strlen(path) + 1];
#ifndef WINDOWS
if( !m_directory) return -1;
#endif
strcpy(m_directory,path);
}
/* now r saved the pos of files list. q saved list length */
p = metabuf + r + 1;
q--;
for(; q && 'e' != *p; p += dl, q -= dl){
if(!(dl = decode_dict(p, q, (const char*) 0)) ) return -1;
if( !decode_query(p, dl, "length", (const char**) 0,
&r,QUERY_INT) ) return -1;
pbf = _new_bfnode();
#ifndef WINDOWS
if( !pbf ) return -1;
#endif
pbf->bf_length = r;
m_total_files_length += r;
r = decode_query(p, dl, "path", (const char **) 0, &n,QUERY_POS);
if( !r ) return -1;
if(!decode_list2path(p + r, n, path)) return -1;
pbf->bf_filename = new char[strlen(path) + 1];
#ifndef WINDOWS
if( !pbf->bf_filename ) return -1;
#endif
strcpy(pbf->bf_filename, path);
if(pbf_last) pbf_last->bf_next = pbf; else m_btfhead = pbf;
pbf_last = pbf;
}
}else{
if( !decode_query(metabuf,metabuf_len,"info|length",
(const char**) 0,(size_t*) &q,QUERY_INT) )
return -1;
m_btfhead = _new_bfnode();
#ifndef WINDOWS
if( !m_btfhead) return -1;
#endif
m_btfhead->bf_length = m_total_files_length = q;
if( saveas ){
m_btfhead->bf_filename = new char[strlen(saveas) + 1];
#ifndef WINDOWS
if(!m_btfhead->bf_filename ) return -1;
#endif
strcpy(m_btfhead->bf_filename, saveas);
}else{
m_btfhead->bf_filename = new char[strlen(path) + 1];
#ifndef WINDOWS
if(!m_btfhead->bf_filename ) return -1;
#endif
strcpy(m_btfhead->bf_filename, path);
}
}
return 0;
}
