/*
- Copyright (C) 2019-2020 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2019-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
*/
-#include "lib/version.h"
-#include "lib/disk_writer_messages.h"
+
#include "lib/compose.hpp"
-#include "lib/exceptions.h"
#include "lib/cross.h"
+#include "lib/dcpomatic_log.h"
#include "lib/digester.h"
+#include "lib/disk_writer_messages.h"
+#include "lib/exceptions.h"
+#include "lib/ext.h"
#include "lib/file_log.h"
-#include "lib/dcpomatic_log.h"
#include "lib/nanomsg.h"
+#include "lib/version.h"
#include "lib/warnings.h"
-extern "C" {
-#include <lwext4/ext4_mbr.h>
-#include <lwext4/ext4_fs.h>
-#include <lwext4/ext4_mkfs.h>
-#include <lwext4/ext4_errno.h>
-#include <lwext4/ext4_debug.h>
-#include <lwext4/ext4.h>
-}
#ifdef DCPOMATIC_POSIX
#include <sys/ioctl.h>
#endif
#ifdef DCPOMATIC_LINUX
-#include <linux/fs.h>
#include <polkit/polkit.h>
-extern "C" {
-#include <lwext4/file_dev.h>
-}
#include <poll.h>
#endif
#include <sys/types.h>
#include <boost/filesystem.hpp>
#include <boost/algorithm/string.hpp>
-#include <boost/foreach.hpp>
#include <iostream>
+
using std::cin;
using std::min;
using std::string;
using std::vector;
using boost::optional;
-#ifdef DCPOMATIC_LINUX
-static PolkitAuthority* polkit_authority = 0;
-#endif
-static uint64_t const block_size = 4096;
-static Nanomsg* nanomsg = 0;
#define SHORT_TIMEOUT 100
#define LONG_TIMEOUT 2000
-static
-void
-count (boost::filesystem::path dir, uint64_t& total_bytes)
-{
- using namespace boost::filesystem;
- for (directory_iterator i = directory_iterator(dir); i != directory_iterator(); ++i) {
- if (is_directory(*i)) {
- count (*i, total_bytes);
- } else {
- total_bytes += file_size (*i);
- }
- }
-}
-
-static
-string
-write (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
-{
- ext4_file out;
- int r = ext4_fopen(&out, to.generic_string().c_str(), "wb");
- if (r != EOK) {
- throw CopyError (String::compose("Failed to open file %1", to.generic_string()), r);
- }
-
- FILE* in = fopen_boost (from, "rb");
- if (!in) {
- ext4_fclose (&out);
- throw CopyError (String::compose("Failed to open file %1", from.string()), 0);
- }
-
- uint8_t* buffer = new uint8_t[block_size];
- Digester digester;
-
- int progress_frequency = 5000;
- int progress_count = 0;
- uint64_t remaining = file_size (from);
- while (remaining > 0) {
- uint64_t const this_time = min(remaining, block_size);
- size_t read = fread (buffer, 1, this_time, in);
- if (read != this_time) {
- fclose (in);
- ext4_fclose (&out);
- delete[] buffer;
- throw CopyError (String::compose("Short read; expected %1 but read %2", this_time, read), 0);
- }
-
- digester.add (buffer, this_time);
-
- size_t written;
- r = ext4_fwrite (&out, buffer, this_time, &written);
- if (r != EOK) {
- fclose (in);
- ext4_fclose (&out);
- delete[] buffer;
- throw CopyError ("Write failed", r);
- }
- if (written != this_time) {
- fclose (in);
- ext4_fclose (&out);
- delete[] buffer;
- throw CopyError (String::compose("Short write; expected %1 but wrote %2", this_time, written), 0);
- }
- remaining -= this_time;
- total_remaining -= this_time;
-
- ++progress_count;
- if ((progress_count % progress_frequency) == 0) {
- nanomsg->send(String::compose(DISK_WRITER_COPY_PROGRESS "\n%1\n", (1 - float(total_remaining) / total)), SHORT_TIMEOUT);
- }
- }
- fclose (in);
- ext4_fclose (&out);
- delete[] buffer;
-
- return digester.get ();
-}
-
-static
-string
-read (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total)
-{
- ext4_file in;
- LOG_DISK("Opening %1 for read", to.generic_string());
- int r = ext4_fopen(&in, to.generic_string().c_str(), "rb");
- if (r != EOK) {
- throw VerifyError (String::compose("Failed to open file %1", to.generic_string()), r);
- }
- LOG_DISK("Opened %1 for read", to.generic_string());
-
- uint8_t* buffer = new uint8_t[block_size];
- Digester digester;
-
- uint64_t remaining = file_size (from);
- while (remaining > 0) {
- uint64_t const this_time = min(remaining, block_size);
- size_t read;
- r = ext4_fread (&in, buffer, this_time, &read);
- if (read != this_time) {
- ext4_fclose (&in);
- delete[] buffer;
- throw VerifyError (String::compose("Short read; expected %1 but read %2", this_time, read), 0);
- }
-
- digester.add (buffer, this_time);
- remaining -= this_time;
- total_remaining -= this_time;
- nanomsg->send(String::compose(DISK_WRITER_VERIFY_PROGRESS "\n%1\n", (1 - float(total_remaining) / total)), SHORT_TIMEOUT);
- }
-
- ext4_fclose (&in);
- delete[] buffer;
-
- return digester.get ();
-}
+#ifdef DCPOMATIC_LINUX
+static PolkitAuthority* polkit_authority = nullptr;
+#endif
+static Nanomsg* nanomsg = nullptr;
-class CopiedFile
-{
-public:
- CopiedFile (boost::filesystem::path from_, boost::filesystem::path to_, string write_digest_)
- : from (from_)
- , to (to_)
- , write_digest (write_digest_)
- {}
-
- boost::filesystem::path from;
- boost::filesystem::path to;
- /** digest calculated from data as it was read from the source during write */
- string write_digest;
-};
-
-
-/** @param from File to copy from.
- * @param to Directory to copy to.
- */
-static
+#ifdef DCPOMATIC_LINUX
void
-copy (boost::filesystem::path from, boost::filesystem::path to, uint64_t& total_remaining, uint64_t total, vector<CopiedFile>& copied_files)
+polkit_callback (GObject *, GAsyncResult* res, gpointer data)
{
- LOG_DISK ("Copy %1 -> %2", from.string(), to.generic_string());
-
- using namespace boost::filesystem;
-
- path const cr = to / from.filename();
-
- if (is_directory(from)) {
- int r = ext4_dir_mk (cr.generic_string().c_str());
- if (r != EOK) {
- throw CopyError (String::compose("Failed to create directory %1", cr.generic_string()), r);
- }
-
- for (directory_iterator i = directory_iterator(from); i != directory_iterator(); ++i) {
- copy (i->path(), cr, total_remaining, total, copied_files);
- }
+ auto parameters = reinterpret_cast<std::pair<std::function<void ()>, std::function<void ()>>*> (data);
+ GError* error = nullptr;
+ auto result = polkit_authority_check_authorization_finish (polkit_authority, res, &error);
+ bool failed = false;
+
+ if (error) {
+ LOG_DISK("polkit authority check failed (check_authorization_finish failed with %1)", error->message);
+ failed = true;
} else {
- string const write_digest = write (from, cr, total_remaining, total);
- LOG_DISK ("Wrote %1 %2 with %3", from.string(), cr.generic_string(), write_digest);
- copied_files.push_back (CopiedFile(from, cr, write_digest));
- }
-}
-
-
-static
-void
-verify (vector<CopiedFile> const& copied_files, uint64_t total)
-{
- uint64_t total_remaining = total;
- BOOST_FOREACH (CopiedFile const& i, copied_files) {
- string const read_digest = read (i.from, i.to, total_remaining, total);
- LOG_DISK ("Read %1 %2 was %3 on write, now %4", i.from.string(), i.to.generic_string(), i.write_digest, read_digest);
- if (read_digest != i.write_digest) {
- throw VerifyError ("Hash of written data is incorrect", 0);
+ if (polkit_authorization_result_get_is_authorized(result)) {
+ parameters->first();
+ } else {
+ failed = true;
+ if (polkit_authorization_result_get_is_challenge(result)) {
+ LOG_DISK_NC("polkit authority check failed (challenge)");
+ } else {
+ LOG_DISK_NC("polkit authority check failed (not authorized)");
+ }
}
}
-}
-
-static
-void
-write (boost::filesystem::path dcp_path, string device)
-try
-{
- ext4_dmask_set (DEBUG_ALL);
-
- /* We rely on static initialization for these */
- static struct ext4_fs fs;
- static struct ext4_mkfs_info info;
- info.block_size = 4096;
- info.inode_size = 128;
- info.journal = false;
-
-#ifdef WIN32
- file_windows_name_set(device.c_str());
- struct ext4_blockdev* bd = file_windows_dev_get();
-#else
- file_dev_name_set (device.c_str());
- struct ext4_blockdev* bd = file_dev_get ();
-#endif
-
- if (!bd) {
- throw CopyError ("Failed to open drive", 0);
+ if (failed) {
+ parameters->second();
}
- LOG_DISK_NC ("Opened drive");
- struct ext4_mbr_parts parts;
- parts.division[0] = 100;
- parts.division[1] = 0;
- parts.division[2] = 0;
- parts.division[3] = 0;
-
-#ifdef DCPOMATIC_LINUX
- PrivilegeEscalator e;
-#endif
-
- /* XXX: not sure if disk_id matters */
- int r = ext4_mbr_write (bd, &parts, 0);
- if (r) {
- throw CopyError ("Failed to write MBR", r);
- }
- LOG_DISK_NC ("Wrote MBR");
+ delete parameters;
- struct ext4_mbr_bdevs bdevs;
- r = ext4_mbr_scan (bd, &bdevs);
- if (r != EOK) {
- throw CopyError ("Failed to read MBR", r);
+ if (result) {
+ g_object_unref (result);
}
-
-#ifdef DCPOMATIC_WINDOWS
- file_windows_partition_set (bdevs.partitions[0].part_offset, bdevs.partitions[0].part_size);
+}
#endif
- LOG_DISK ("Writing to partition at %1 size %2; bd part size is %3", bdevs.partitions[0].part_offset, bdevs.partitions[0].part_size, bd->part_size);
#ifdef DCPOMATIC_LINUX
- /* Re-read the partition table */
- int fd = open(device.c_str(), O_RDONLY);
- ioctl(fd, BLKRRPART, NULL);
- close(fd);
+void request_privileges (string action, std::function<void ()> granted, std::function<void ()> denied)
+#else
+void request_privileges (string, std::function<void ()> granted, std::function<void ()>)
#endif
-
+{
#ifdef DCPOMATIC_LINUX
- string partition = device;
- /* XXX: don't know if this logic is sensible */
- if (partition.size() > 0 && isdigit(partition[partition.length() - 1])) {
- partition += "p1";
- } else {
- partition += "1";
- }
- file_dev_name_set (partition.c_str());
- bd = file_dev_get ();
-#endif
+ polkit_authority = polkit_authority_get_sync (0, 0);
+ auto subject = polkit_unix_process_new_for_owner (getppid(), 0, -1);
-#ifdef DCPOMATIC_OSX
- string partition = device + "s1";
- file_dev_name_set (partition.c_str());
- bd = file_dev_get ();
+ auto parameters = new std::pair<std::function<void ()>, std::function<void ()>>(granted, denied);
+ polkit_authority_check_authorization (
+ polkit_authority, subject, action.c_str(), 0, POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION, 0, polkit_callback, parameters
+ );
+#else
+ granted ();
#endif
-
- if (!bd) {
- throw CopyError ("Failed to open partition", 0);
- }
- LOG_DISK_NC ("Opened partition");
-
- nanomsg->send(DISK_WRITER_FORMATTING "\n", SHORT_TIMEOUT);
-
- r = ext4_mkfs(&fs, bd, &info, F_SET_EXT2);
- if (r != EOK) {
- throw CopyError ("Failed to make filesystem", r);
- }
- LOG_DISK_NC ("Made filesystem");
-
- r = ext4_device_register(bd, "ext4_fs");
- if (r != EOK) {
- throw CopyError ("Failed to register device", r);
- }
- LOG_DISK_NC ("Registered device");
-
- r = ext4_mount("ext4_fs", "/mp/", false);
- if (r != EOK) {
- throw CopyError ("Failed to mount device", r);
- }
- LOG_DISK_NC ("Mounted device");
-
- uint64_t total_bytes = 0;
- count (dcp_path, total_bytes);
-
- uint64_t total_remaining = total_bytes;
- vector<CopiedFile> copied_files;
- copy (dcp_path, "/mp", total_remaining, total_bytes, copied_files);
-
- /* Unmount and re-mount to make sure the write has finished */
- r = ext4_umount("/mp/");
- if (r != EOK) {
- throw CopyError ("Failed to unmount device", r);
- }
- r = ext4_mount("ext4_fs", "/mp/", false);
- if (r != EOK) {
- throw CopyError ("Failed to mount device", r);
- }
- LOG_DISK_NC ("Re-mounted device");
-
- verify (copied_files, total_bytes);
-
- r = ext4_umount("/mp/");
- if (r != EOK) {
- throw CopyError ("Failed to unmount device", r);
- }
-
- ext4_device_unregister("ext4_fs");
- if (!nanomsg->send(DISK_WRITER_OK "\n", LONG_TIMEOUT)) {
- throw CommunicationFailedError ();
- }
-
- disk_write_finished ();
-} catch (CopyError& e) {
- LOG_DISK("CopyError (from write): %1 %2", e.message(), e.number().get_value_or(0));
- nanomsg->send(String::compose(DISK_WRITER_ERROR "\n%1\n%2\n", e.message(), e.number().get_value_or(0)), LONG_TIMEOUT);
-} catch (VerifyError& e) {
- LOG_DISK("VerifyError (from write): %1 %2", e.message(), e.number());
- nanomsg->send(String::compose(DISK_WRITER_ERROR "\n%1\n%2\n", e.message(), e.number()), LONG_TIMEOUT);
-} catch (exception& e) {
- LOG_DISK("Exception (from write): %1", e.what());
- nanomsg->send(String::compose(DISK_WRITER_ERROR "\n%1\n0\n", e.what()), LONG_TIMEOUT);
}
-struct Parameters
-{
- boost::filesystem::path dcp_path;
- std::string device;
-};
-
-#ifdef DCPOMATIC_LINUX
-static
-void
-polkit_callback (GObject *, GAsyncResult* res, gpointer data)
-{
- Parameters* parameters = reinterpret_cast<Parameters*> (data);
- PolkitAuthorizationResult* result = polkit_authority_check_authorization_finish (polkit_authority, res, 0);
- if (result && polkit_authorization_result_get_is_authorized(result)) {
- write (parameters->dcp_path, parameters->device);
- }
- delete parameters;
- if (result) {
- g_object_unref (result);
- }
-}
-#endif
-
bool
idle ()
{
using namespace boost::algorithm;
- optional<string> s = nanomsg->receive (0);
+ auto s = nanomsg->receive (0);
if (!s) {
return true;
}
} else if (*s == DISK_WRITER_PING) {
nanomsg->send(DISK_WRITER_PONG "\n", LONG_TIMEOUT);
} else if (*s == DISK_WRITER_UNMOUNT) {
- /* XXX: should do Linux polkit stuff here */
- optional<string> xml_head = nanomsg->receive (LONG_TIMEOUT);
- optional<string> xml_body = nanomsg->receive (LONG_TIMEOUT);
+ auto xml_head = nanomsg->receive (LONG_TIMEOUT);
+ auto xml_body = nanomsg->receive (LONG_TIMEOUT);
if (!xml_head || !xml_body) {
LOG_DISK_NC("Failed to receive unmount request");
throw CommunicationFailedError ();
}
- bool const success = Drive(*xml_head + *xml_body).unmount();
- if (!nanomsg->send (success ? (DISK_WRITER_OK "\n") : (DISK_WRITER_ERROR "\n"), LONG_TIMEOUT)) {
- LOG_DISK_NC("CommunicationFailedError in unmount_finished");
- throw CommunicationFailedError ();
- }
+ auto xml = *xml_head + *xml_body;
+ request_privileges (
+ "com.dcpomatic.write-drive",
+ [xml]() {
+ bool const success = Drive(xml).unmount();
+ if (!nanomsg->send(success ? (DISK_WRITER_OK "\n") : (DISK_WRITER_ERROR "\n"), LONG_TIMEOUT)) {
+ LOG_DISK_NC("CommunicationFailedError in unmount_finished");
+ throw CommunicationFailedError ();
+ }
+ },
+ []() {
+ if (!nanomsg->send(DISK_WRITER_ERROR "\n", LONG_TIMEOUT)) {
+ LOG_DISK_NC("CommunicationFailedError in unmount_finished");
+ throw CommunicationFailedError ();
+ }
+ });
} else if (*s == DISK_WRITER_WRITE) {
- optional<string> dcp_path = nanomsg->receive (LONG_TIMEOUT);
- optional<string> device = nanomsg->receive (LONG_TIMEOUT);
- if (!dcp_path || !device) {
+ auto dcp_path_opt = nanomsg->receive (LONG_TIMEOUT);
+ auto device_opt = nanomsg->receive (LONG_TIMEOUT);
+ if (!dcp_path_opt || !device_opt) {
LOG_DISK_NC("Failed to receive write request");
throw CommunicationFailedError();
}
+ auto dcp_path = *dcp_path_opt;
+ auto device = *device_opt;
+
/* Do some basic sanity checks; this is a bit belt-and-braces but it can't hurt... */
#ifdef DCPOMATIC_OSX
- if (!starts_with(*device, "/dev/disk")) {
- LOG_DISK ("Will not write to %1", *device);
+ if (!starts_with(device, "/dev/disk")) {
+ LOG_DISK ("Will not write to %1", device);
nanomsg->send(DISK_WRITER_ERROR "\nRefusing to write to this drive\n1\n", LONG_TIMEOUT);
return true;
}
#endif
#ifdef DCPOMATIC_LINUX
- if (!starts_with(*device, "/dev/sd") && !starts_with(*device, "/dev/hd")) {
- LOG_DISK ("Will not write to %1", *device);
+ if (!starts_with(device, "/dev/sd") && !starts_with(device, "/dev/hd")) {
+ LOG_DISK ("Will not write to %1", device);
nanomsg->send(DISK_WRITER_ERROR "\nRefusing to write to this drive\n1\n", LONG_TIMEOUT);
return true;
}
#endif
#ifdef DCPOMATIC_WINDOWS
- if (!starts_with(*device, "\\\\.\\PHYSICALDRIVE")) {
- LOG_DISK ("Will not write to %1", *device);
+ if (!starts_with(device, "\\\\.\\PHYSICALDRIVE")) {
+ LOG_DISK ("Will not write to %1", device);
nanomsg->send(DISK_WRITER_ERROR "\nRefusing to write to this drive\n1\n", LONG_TIMEOUT);
return true;
}
bool on_drive_list = false;
bool mounted = false;
for (auto const& i: Drive::get()) {
- if (i.device() == *device) {
+ if (i.device() == device) {
on_drive_list = true;
mounted = i.mounted();
}
}
if (!on_drive_list) {
- LOG_DISK ("Will not write to %1 as it's not recognised as a drive", *device);
+ LOG_DISK ("Will not write to %1 as it's not recognised as a drive", device);
nanomsg->send(DISK_WRITER_ERROR "\nRefusing to write to this drive\n1\n", LONG_TIMEOUT);
return true;
}
if (mounted) {
- LOG_DISK ("Will not write to %1 as it's mounted", *device);
+ LOG_DISK ("Will not write to %1 as it's mounted", device);
nanomsg->send(DISK_WRITER_ERROR "\nRefusing to write to this drive\n1\n", LONG_TIMEOUT);
return true;
}
- LOG_DISK ("Here we go writing %1 to %2", *dcp_path, *device);
-
-#ifdef DCPOMATIC_LINUX
- polkit_authority = polkit_authority_get_sync (0, 0);
- PolkitSubject* subject = polkit_unix_process_new_for_owner (getppid(), 0, -1);
- Parameters* parameters = new Parameters;
- parameters->dcp_path = *dcp_path;
- parameters->device = *device;
- polkit_authority_check_authorization (
- polkit_authority, subject, "com.dcpomatic.write-drive", 0, POLKIT_CHECK_AUTHORIZATION_FLAGS_ALLOW_USER_INTERACTION, 0, polkit_callback, parameters
- );
-#else
- write (*dcp_path, *device);
+ LOG_DISK ("Here we go writing %1 to %2", dcp_path, device);
+
+ request_privileges (
+ "com.dcpomatic.write-drive",
+ [dcp_path, device]() {
+#if defined(DCPOMATIC_LINUX)
+ auto posix_partition = device;
+ /* XXX: don't know if this logic is sensible */
+ if (posix_partition.size() > 0 && isdigit(posix_partition[posix_partition.length() - 1])) {
+ posix_partition += "p1";
+ } else {
+ posix_partition += "1";
+ }
+ dcpomatic::write (dcp_path, device, posix_partition, nanomsg);
+#elif defined(DCPOMATIC_OSX)
+ auto fast_device = boost::algorithm::replace_first_copy (device, "/dev/disk", "/dev/rdisk");
+ dcpomatic::write (dcp_path, fast_device, fast_device + "s1", nanomsg);
+#elif defined(DCPOMATIC_WINDOWS)
+ dcpomatic::write (dcp_path, device, "", nanomsg);
#endif
+ },
+ []() {
+ if (nanomsg) {
+ nanomsg->send(DISK_WRITER_ERROR "\nCould not obtain authorization to write to the drive\n", LONG_TIMEOUT);
+ }
+ });
}
return true;
#endif
#ifdef DCPOMATIC_OSX
- /* I *think* this confumes the notifyd event that we used to start the process, so we only
+ /* I *think* this consumes the notifyd event that we used to start the process, so we only
* get started once per notification.
*/
xpc_set_event_stream_handler("com.apple.notifyd.matching", DISPATCH_TARGET_QUEUE_DEFAULT, ^(xpc_object_t) {});
exit (EXIT_FAILURE);
}
- Glib::RefPtr<Glib::MainLoop> ml = Glib::MainLoop::create ();
+ LOG_DISK_NC("Entering main loop");
+ auto ml = Glib::MainLoop::create ();
Glib::signal_timeout().connect(sigc::ptr_fun(&idle), 500);
ml->run ();
}
projects / dcpomatic.git / blobdiff