summaryrefslogtreecommitdiffstats
path: root/src/rgw/rgw_torrent.cc
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/rgw/rgw_torrent.cc261
1 files changed, 261 insertions, 0 deletions
diff --git a/src/rgw/rgw_torrent.cc b/src/rgw/rgw_torrent.cc
new file mode 100644
index 000000000..e1a1417a5
--- /dev/null
+++ b/src/rgw/rgw_torrent.cc
@@ -0,0 +1,261 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab ft=cpp
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include <sstream>
+
+#include "rgw_torrent.h"
+#include "rgw_sal.h"
+#include "rgw_sal_rados.h"
+#include "include/str_list.h"
+#include "include/rados/librados.hpp"
+
+#include "services/svc_sys_obj.h"
+
+#define dout_subsys ceph_subsys_rgw
+
+using namespace std;
+using namespace librados;
+using namespace boost;
+using ceph::crypto::SHA1;
+
+seed::seed()
+{
+ seed::info.piece_length = 0;
+ seed::info.len = 0;
+ sha_len = 0;
+ is_torrent = false;
+}
+
+seed::~seed()
+{
+ seed::info.sha1_bl.clear();
+ bl.clear();
+ s = NULL;
+ driver = NULL;
+}
+
+void seed::init(req_state *_req, rgw::sal::Driver* _driver)
+{
+ s = _req;
+ driver = _driver;
+}
+
+int seed::get_torrent_file(rgw::sal::Object* object,
+ uint64_t &total_len,
+ ceph::bufferlist &bl_data,
+ rgw_obj &obj)
+{
+ /* add other field if config is set */
+ dencode.bencode_dict(bl);
+ set_announce();
+ if (!comment.empty())
+ {
+ dencode.bencode(COMMENT, comment, bl);
+ }
+ if (!create_by.empty())
+ {
+ dencode.bencode(CREATED_BY, create_by, bl);
+ }
+ if (!encoding.empty())
+ {
+ dencode.bencode(ENCODING, encoding, bl);
+ }
+
+ string oid, key;
+ get_obj_bucket_and_oid_loc(obj, oid, key);
+ ldpp_dout(s, 20) << "NOTICE: head obj oid= " << oid << dendl;
+
+ const set<string> obj_key{RGW_OBJ_TORRENT};
+ map<string, bufferlist> m;
+ const int r = object->omap_get_vals_by_keys(s, oid, obj_key, &m);
+ if (r < 0) {
+ ldpp_dout(s, 0) << "ERROR: omap_get_vals_by_keys failed: " << r << dendl;
+ return r;
+ }
+ if (m.size() != 1) {
+ ldpp_dout(s, 0) << "ERROR: omap key " RGW_OBJ_TORRENT " not found" << dendl;
+ return -EINVAL;
+ }
+ bl.append(std::move(m.begin()->second));
+ dencode.bencode_end(bl);
+
+ bl_data = bl;
+ total_len = bl.length();
+ return 0;
+}
+
+bool seed::get_flag()
+{
+ return is_torrent;
+}
+
+void seed::update(bufferlist &bl)
+{
+ if (!is_torrent)
+ {
+ return;
+ }
+ info.len += bl.length();
+ sha1(&h, bl, bl.length());
+}
+
+int seed::complete(optional_yield y)
+{
+ uint64_t remain = info.len%info.piece_length;
+ uint8_t remain_len = ((remain > 0)? 1 : 0);
+ sha_len = (info.len/info.piece_length + remain_len)*CEPH_CRYPTO_SHA1_DIGESTSIZE;
+
+ int ret = 0;
+ /* produce torrent data */
+ do_encode();
+
+ /* save torrent data into OMAP */
+ ret = save_torrent_file(y);
+ if (0 != ret)
+ {
+ ldpp_dout(s, 0) << "ERROR: failed to save_torrent_file() ret= "<< ret << dendl;
+ return ret;
+ }
+
+ return 0;
+}
+
+off_t seed::get_data_len()
+{
+ return info.len;
+}
+
+void seed::set_create_date(ceph::real_time& value)
+{
+ utime_t date = ceph::real_clock::to_timespec(value);
+ create_date = date.sec();
+}
+
+void seed::set_info_pieces(char *buff)
+{
+ info.sha1_bl.append(buff, CEPH_CRYPTO_SHA1_DIGESTSIZE);
+}
+
+void seed::set_info_name(const string& value)
+{
+ info.name = value;
+}
+
+void seed::sha1(SHA1 *h, bufferlist &bl, off_t bl_len)
+{
+ off_t num = bl_len/info.piece_length;
+ off_t remain = 0;
+ remain = bl_len%info.piece_length;
+
+ char *pstr = bl.c_str();
+ char sha[25];
+
+ /* get sha1 */
+ for (off_t i = 0; i < num; i++)
+ {
+ // FIPS zeroization audit 20191116: this memset is not intended to
+ // wipe out a secret after use.
+ memset(sha, 0x00, sizeof(sha));
+ h->Update((unsigned char *)pstr, info.piece_length);
+ h->Final((unsigned char *)sha);
+ set_info_pieces(sha);
+ pstr += info.piece_length;
+ }
+
+ /* process remain */
+ if (0 != remain)
+ {
+ // FIPS zeroization audit 20191116: this memset is not intended to
+ // wipe out a secret after use.
+ memset(sha, 0x00, sizeof(sha));
+ h->Update((unsigned char *)pstr, remain);
+ h->Final((unsigned char *)sha);
+ set_info_pieces(sha);
+ }
+ ::ceph::crypto::zeroize_for_security(sha, sizeof(sha));
+}
+
+int seed::get_params()
+{
+ is_torrent = true;
+ info.piece_length = g_conf()->rgw_torrent_sha_unit;
+ create_by = g_conf()->rgw_torrent_createby;
+ encoding = g_conf()->rgw_torrent_encoding;
+ origin = g_conf()->rgw_torrent_origin;
+ comment = g_conf()->rgw_torrent_comment;
+ announce = g_conf()->rgw_torrent_tracker;
+
+ /* tracker and tracker list is empty, set announce to origin */
+ if (announce.empty() && !origin.empty())
+ {
+ announce = origin;
+ }
+
+ return 0;
+}
+
+void seed::set_announce()
+{
+ list<string> announce_list; // used to get announce list from conf
+ get_str_list(announce, ",", announce_list);
+
+ if (announce_list.empty())
+ {
+ ldpp_dout(s, 5) << "NOTICE: announce_list is empty " << dendl;
+ return;
+ }
+
+ list<string>::iterator iter = announce_list.begin();
+ dencode.bencode_key(ANNOUNCE, bl);
+ dencode.bencode_key((*iter), bl);
+
+ dencode.bencode_key(ANNOUNCE_LIST, bl);
+ dencode.bencode_list(bl);
+ for (; iter != announce_list.end(); ++iter)
+ {
+ dencode.bencode_list(bl);
+ dencode.bencode_key((*iter), bl);
+ dencode.bencode_end(bl);
+ }
+ dencode.bencode_end(bl);
+}
+
+void seed::do_encode()
+{
+ /*Only encode create_date and sha1 info*/
+ /*Other field will be added if confi is set when run get torrent*/
+ dencode.bencode(CREATION_DATE, create_date, bl);
+
+ dencode.bencode_key(INFO_PIECES, bl);
+ dencode.bencode_dict(bl);
+ dencode.bencode(LENGTH, info.len, bl);
+ dencode.bencode(NAME, info.name, bl);
+ dencode.bencode(PIECE_LENGTH, info.piece_length, bl);
+
+ char info_sha[100] = { 0 };
+ sprintf(info_sha, "%" PRIu64, sha_len);
+ string sha_len_str = info_sha;
+ dencode.bencode_key(PIECES, bl);
+ bl.append(sha_len_str.c_str(), sha_len_str.length());
+ bl.append(':');
+ bl.append(info.sha1_bl.c_str(), sha_len);
+ dencode.bencode_end(bl);
+}
+
+int seed::save_torrent_file(optional_yield y)
+{
+ int op_ret = 0;
+ string key = RGW_OBJ_TORRENT;
+
+ op_ret = s->object->omap_set_val_by_key(s, key, bl, false, y);
+ if (op_ret < 0)
+ {
+ ldpp_dout(s, 0) << "ERROR: failed to omap_set() op_ret = " << op_ret << dendl;
+ return op_ret;
+ }
+
+ return op_ret;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 01:35:10 +0000