static void parse_reply(struct torrent *tp, struct tr_response *res, const char *content, size_t size) { const char *buf; size_t len; const char *peers; const char *v6key[] = {"peers6", "peers_ipv6"}; if (benc_validate(content, size) != 0) goto bad_data; if ((buf = benc_dget_any(content, "failure reason")) != NULL) { if (!benc_isstr(buf)) goto bad_data; res->type = TR_RES_FAIL; res->mi_failure = buf; return; } buf = benc_dget_any(content, "interval"); if (buf != NULL && benc_isint(buf)) res->interval = benc_int(buf, NULL); if ((peers = benc_dget_any(content, "peers")) == NULL) goto after_peers; if (benc_islst(peers)) { for (peers = benc_first(peers); peers != NULL && net_npeers < net_max_peers; peers = benc_next(peers)) maybe_connect_to(tp, peers); } else if (benc_isstr(peers)) { if (net_ipv4) { peers = benc_dget_mem(content, "peers", &len); for (size_t i = 0; i < len && net_npeers < net_max_peers; i += 6) peer_create_out_compact(tp->net, AF_INET, peers + i); } } else goto bad_data; after_peers: if (!net_ipv6) goto after_peers6; for (int k = 0; k < 2; k++) { peers = benc_dget_any(content, v6key[k]); if (peers != NULL && benc_isstr(peers)) { peers = benc_dget_mem(content, v6key[k], &len); for (size_t i = 0; i < len && net_npeers < net_max_peers; i += 18) peer_create_out_compact(tp->net, AF_INET6, peers + i); } } after_peers6: res->type = TR_RES_OK; return; bad_data: res->type = TR_RES_BAD; }
int mi_test(const char *p, size_t size) { const char *info; const char *alst; const char *pieces; const char *files; const char *fdct; const char *name; size_t slen, npieces; off_t length = 0, piece_length; if (benc_validate(p, size) != 0 || !benc_isdct(p)) return 0; if ((alst = benc_dget_any(p, "announce-list")) != NULL) { if (!benc_islst(alst)) return 0; if (!mi_test_announce_list(alst)) return 0; } else if (benc_dget_mem(p, "announce", NULL) == NULL) return 0; if ((info = benc_dget_dct(p, "info")) == NULL) return 0; if ((name = benc_dget_mem(info, "name", &slen)) != NULL) if (!mi_test_path(name, slen)) return 0; if ((piece_length = benc_dget_int(info, "piece length")) <= 0) return 0; if ((pieces = benc_dget_mem(info, "pieces", &slen)) == NULL || slen % 20 != 0) return 0; npieces = slen / 20; if ((length = benc_dget_int(info, "length")) != 0) { if (length < 0 || benc_dget_any(info, "files") != NULL) return 0; } else { if ((files = benc_dget_lst(info, "files")) == NULL) return 0; if (!mi_test_files(files)) return 0; fdct = benc_first(files); while (fdct != NULL) { length += benc_dget_int(fdct, "length"); fdct = benc_next(fdct); } } if (length < (npieces - 1) * piece_length || length > npieces * piece_length) return 0; return 1; }
static int cmd_tget(struct cli *cli, int argc, const char *args) { if (argc != 1 || !benc_isdct(args)) return IPC_COMMERR; size_t nkeys; const char *keys, *p; enum ipc_tval *opts; struct iobuf iob; if ((keys = benc_dget_lst(args, "keys")) == NULL) return IPC_COMMERR; nkeys = benc_nelems(keys); opts = btpd_calloc(nkeys, sizeof(*opts)); p = benc_first(keys); for (int i = 0; i < nkeys; i++) opts[i] = benc_int(p, &p); iob = iobuf_init(1 << 15); iobuf_swrite(&iob, "d4:codei0e6:resultl"); p = benc_dget_any(args, "from"); if (benc_isint(p)) { enum ipc_twc from = benc_int(p, NULL); struct htbl_iter it; struct tlib *tl; for (tl = tlib_iter_first(&it); tl != NULL; tl = tlib_iter_next(&it)) { if (!torrent_haunting(tl) && ( from == IPC_TWC_ALL || (!torrent_active(tl) && from == IPC_TWC_INACTIVE) || (torrent_active(tl) && from == IPC_TWC_ACTIVE))) { iobuf_swrite(&iob, "l"); for (int k = 0; k < nkeys; k++) write_ans(&iob, tl, opts[k]); iobuf_swrite(&iob, "e"); } } } else if (benc_islst(p)) { for (p = benc_first(p); p != NULL; p = benc_next(p)) { struct tlib *tl = NULL; if (benc_isint(p)) tl = tlib_by_num(benc_int(p, NULL)); else if (benc_isstr(p) && benc_strlen(p) == 20) tl = tlib_by_hash(benc_mem(p, NULL, NULL)); else { iobuf_free(&iob); free(opts); return IPC_COMMERR; } if (tl != NULL && !torrent_haunting(tl)) { iobuf_swrite(&iob, "l"); for (int i = 0; i < nkeys; i++) write_ans(&iob, tl, opts[i]); iobuf_swrite(&iob, "e"); } else iobuf_print(&iob, "i%de", IPC_ENOTENT); } } iobuf_swrite(&iob, "ee"); free(opts); return write_buffer(cli, &iob); }