2 Copyright (C) 2019-2020 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "lib/dist_writer_messages.h"
22 #include "lib/compose.hpp"
23 #include "lib/exceptions.h"
24 #include "lib/cross.h"
25 #include "lib/digester.h"
26 #include "lib/file_log.h"
27 #include "lib/dcpomatic_log.h"
28 #include "lib/nanomsg.h"
30 #include <lwext4/ext4_mbr.h>
31 #include <lwext4/ext4_fs.h>
32 #include <lwext4/ext4_mkfs.h>
33 #include <lwext4/ext4_errno.h>
34 #include <lwext4/ext4_debug.h>
35 #include <lwext4/ext4.h>
38 #ifdef DCPOMATIC_POSIX
39 #include <sys/ioctl.h>
40 #include <sys/types.h>
48 #ifdef DCPOMATIC_LINUX
50 #include <polkit/polkit.h>
52 #include <lwext4/file_dev.h>
57 #ifdef DCPOMATIC_WINDOWS
59 #include <lwext4/file_windows.h>
65 #include <sys/types.h>
66 #include <boost/filesystem.hpp>
72 using std::runtime_error;
73 using boost::optional;
75 #ifdef DCPOMATIC_LINUX
76 static PolkitAuthority* polkit_authority = 0;
78 static boost::filesystem::path dcp_path;
79 static std::string device;
80 static uint64_t const block_size = 4096;
81 static Nanomsg* nanomsg = 0;
85 count (boost::filesystem::path dir, uint64_t& total_bytes)
87 using namespace boost::filesystem;
88 for (directory_iterator i = directory_iterator(dir); i != directory_iterator(); ++i) {
89 if (is_directory(*i)) {
90 count (*i, total_bytes);
92 total_bytes += file_size (*i);
99 write (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
102 int r = ext4_fopen(&out, to.string().c_str(), "wb");
104 throw CopyError (String::compose("Failed to open file %1", to.string()), r);
107 FILE* in = fopen_boost (from, "rb");
110 throw CopyError (String::compose("Failed to open file %1", from.string()), 0);
113 uint8_t* buffer = new uint8_t[block_size];
116 uint64_t remaining = file_size (from);
117 while (remaining > 0) {
118 uint64_t const this_time = min(remaining, block_size);
119 size_t read = fread (buffer, 1, this_time, in);
120 if (read != this_time) {
124 throw CopyError (String::compose("Short read; expected %1 but read %2", this_time, read), 0);
127 digester.add (buffer, this_time);
130 r = ext4_fwrite (&out, buffer, this_time, &written);
135 throw CopyError ("Write failed", r);
137 if (written != this_time) {
141 throw CopyError (String::compose("Short write; expected %1 but wrote %2", this_time, written), 0);
143 remaining -= this_time;
144 total_remaining -= this_time;
145 nanomsg->send(String::compose(DIST_WRITER_PROGRESS "\n%1\n", (1 - float(total_remaining) / total)));
152 return digester.get ();
157 read (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
160 int r = ext4_fopen(&in, to.string().c_str(), "rb");
162 throw VerifyError (String::compose("Failed to open file %1", to.string()), r);
165 uint8_t* buffer = new uint8_t[block_size];
168 uint64_t remaining = file_size (from);
169 while (remaining > 0) {
170 uint64_t const this_time = min(remaining, block_size);
172 r = ext4_fread (&in, buffer, this_time, &read);
173 if (read != this_time) {
176 throw VerifyError (String::compose("Short read; expected %1 but read %2", this_time, read), 0);
179 digester.add (buffer, this_time);
180 remaining -= this_time;
181 total_remaining -= this_time;
182 nanomsg->send(String::compose(DIST_WRITER_PROGRESS "\n%1\n", (1 - float(total_remaining) / total)));
188 return digester.get ();
192 /** @param from File to copy from.
193 * @param to Directory to copy to.
197 copy (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
199 LOG_DIST ("Copy %1 -> %2", from.string(), to.string());
201 using namespace boost::filesystem;
203 path const cr = to / from.filename();
205 if (is_directory(from)) {
206 int r = ext4_dir_mk (cr.string().c_str());
208 throw CopyError (String::compose("Failed to create directory %1", cr.string()), r);
211 for (directory_iterator i = directory_iterator(from); i != directory_iterator(); ++i) {
212 copy (i->path(), cr, total_remaining, total);
215 string const write_digest = write (from, cr, total_remaining, total);
216 LOG_DIST ("Wrote %1 %2 with %3", from.string(), cr.string(), write_digest);
217 string const read_digest = read (from, cr, total_remaining, total);
218 LOG_DIST ("Read %1 %2 with %3", from.string(), cr.string(), write_digest);
219 if (write_digest != read_digest) {
220 throw VerifyError ("Hash of written data is incorrect", 0);
230 // ext4_dmask_set (DEBUG_ALL);
232 nanomsg->send("U\n");
234 /* We rely on static initialization for these */
235 static struct ext4_fs fs;
236 static struct ext4_mkfs_info info;
237 info.block_size = 1024;
238 info.inode_size = 128;
239 info.journal = false;
242 file_windows_name_set(device.c_str());
243 struct ext4_blockdev* bd = file_windows_dev_get();
245 file_dev_name_set (device.c_str());
246 struct ext4_blockdev* bd = file_dev_get ();
250 throw CopyError ("Failed to open drive", 0);
252 LOG_DIST_NC ("Opened drive");
254 struct ext4_mbr_parts parts;
255 parts.division[0] = 100;
256 parts.division[1] = 0;
257 parts.division[2] = 0;
258 parts.division[3] = 0;
260 #ifdef DCPOMATIC_LINUX
261 PrivilegeEscalator e;
264 /* XXX: not sure if disk_id matters */
265 int r = ext4_mbr_write (bd, &parts, 0);
268 throw CopyError ("Failed to write MBR", r);
270 LOG_DIST_NC ("Wrote MBR");
272 #ifdef DCPOMATIC_WINDOWS
273 struct ext4_mbr_bdevs bdevs;
274 r = ext4_mbr_scan (bd, &bdevs);
276 throw CopyError ("Failed to read MBR", r);
279 file_windows_partition_set (bdevs.partitions[0].part_offset, bdevs.partitions[0].part_size);
282 #ifdef DCPOMATIC_LINUX
283 /* Re-read the partition table */
284 int fd = open(device.c_str(), O_RDONLY);
285 ioctl(fd, BLKRRPART, NULL);
289 #ifdef DCPOMATIC_POSIX
290 string partition = device;
291 /* XXX: don't know if this logic is sensible */
292 if (partition.size() > 0 && isdigit(partition[partition.length() - 1])) {
297 file_dev_name_set (partition.c_str());
298 bd = file_dev_get ();
302 throw CopyError ("Failed to open partition", 0);
304 LOG_DIST_NC ("Opened partition");
306 r = ext4_mkfs(&fs, bd, &info, F_SET_EXT4);
308 throw CopyError ("Failed to make filesystem", r);
310 LOG_DIST_NC ("Made filesystem");
312 r = ext4_device_register(bd, "ext4_fs");
314 throw CopyError ("Failed to register device", r);
316 LOG_DIST_NC ("Registered device");
318 r = ext4_mount("ext4_fs", "/mp/", false);
320 throw CopyError ("Failed to mount device", r);
322 LOG_DIST_NC ("Mounted device");
324 uint64_t total_bytes = 0;
325 count (dcp_path, total_bytes);
327 /* XXX: this is a hack. We are going to "treat" every byte twice; write it, and then verify it. Double the
328 * bytes totals so that progress works itself out (assuming write is the same speed as read).
331 copy (dcp_path, "/mp", total_bytes, total_bytes);
333 r = ext4_umount("/mp/");
335 throw CopyError ("Failed to unmount device", r);
338 nanomsg->send(DIST_WRITER_OK "\n");
339 } catch (CopyError& e) {
340 nanomsg->send(String::compose(DIST_WRITER_ERROR "\n%1\n%2\n", e.message(), e.number()));
341 } catch (VerifyError& e) {
342 nanomsg->send(String::compose(DIST_WRITER_ERROR "\n%1\n%2\n", e.message(), e.number()));
345 #ifdef DCPOMATIC_LINUX
348 polkit_callback (GObject *, GAsyncResult* res, gpointer)
350 PolkitAuthorizationResult* result = polkit_authority_check_authorization_finish (polkit_authority, res, 0);
351 if (result && polkit_authorization_result_get_is_authorized(result)) {
355 g_object_unref (result);
363 optional<string> s = nanomsg->nonblocking_get ();
369 device = "/dev/" + nanomsg->blocking_get ();
371 LOG_DIST ("Here we go writing %1 to %2", dcp_path, device);
373 #ifdef DCPOMATIC_LINUX
374 polkit_authority = polkit_authority_get_sync (0, 0);
375 PolkitSubject* subject = polkit_unix_process_new (getppid());
376 polkit_authority_check_authorization (
377 polkit_authority, subject, "com.dcpomatic.write-drive", 0, POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION, 0, polkit_callback, 0
388 /* XXX: this is a hack, but I expect we'll need logs and I'm not sure if there's
389 * a better place to put them.
391 dcpomatic_log.reset(new FileLog(config_path() / "dist_writer.log"));
392 dcpomatic_log->set_types (dcpomatic_log->types() | LogEntry::TYPE_DIST);
393 LOG_DIST_NC("dcpomatic_dist_writer started");
396 nanomsg = new Nanomsg (false);
397 } catch (runtime_error& e) {
398 LOG_DIST_NC("Could not set up nanomsg socket");
402 Glib::RefPtr<Glib::MainLoop> ml = Glib::MainLoop::create ();
403 Glib::signal_timeout().connect(sigc::ptr_fun(&idle), 500);