src/lib/cross_linux.cc

   1 /*
   2     Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   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.
  10
  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.
  15
  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/>.
  18
  19 */
  20
  21
  22 #include "compose.hpp"
  23 #include "config.h"
  24 #include "cross.h"
  25 #include "dcpomatic_log.h"
  26 #include "dcpomatic_log.h"
  27 #include "exceptions.h"
  28 #include "log.h"
  29 #include <dcp/raw_convert.h>
  30 #include <dcp/warnings.h>
  31 #include <glib.h>
  32 #include <boost/algorithm/string.hpp>
  33 #if BOOST_VERSION >= 106100
  34 #include <boost/dll/runtime_symbol_info.hpp>
  35 #endif
  36 #include <unistd.h>
  37 #include <mntent.h>
  38 #include <sys/types.h>
  39 #include <sys/mount.h>
  40 #include <ifaddrs.h>
  41 #include <netinet/in.h>
  42 #include <arpa/inet.h>
  43 #include <fstream>
  44
  45 #include "i18n.h"
  46
  47
  48 using std::cerr;
  49 using std::cout;
  50 using std::ifstream;
  51 using std::list;
  52 using std::make_pair;
  53 using std::pair;
  54 using std::string;
  55 using std::vector;
  56 using boost::optional;
  57
  58
  59 /** @return A string of CPU information (model name etc.) */
  60 string
  61 cpu_info ()
  62 {
  63         string info;
  64
  65         /* This use of ifstream is ok; the filename can never
  66            be non-Latin
  67         */
  68         ifstream f ("/proc/cpuinfo");
  69         while (f.good ()) {
  70                 string l;
  71                 getline (f, l);
  72                 if (boost::algorithm::starts_with (l, "model name")) {
  73                         string::size_type const c = l.find (':');
  74                         if (c != string::npos) {
  75                                 info = l.substr (c + 2);
  76                         }
  77                 }
  78         }
  79
  80         return info;
  81 }
  82
  83
  84 boost::filesystem::path
  85 resources_path ()
  86 {
  87         return directory_containing_executable().parent_path() / "share" / "dcpomatic2";
  88 }
  89
  90
  91 boost::filesystem::path
  92 libdcp_resources_path ()
  93 {
  94         if (auto appdir = getenv("APPDIR")) {
  95                 return boost::filesystem::path(appdir) / "usr" / "share" / "libdcp";
  96         }
  97         return boost::filesystem::canonical(LINUX_SHARE_PREFIX) / "libdcp";
  98 }
  99
 100
 101 void
 102 run_ffprobe (boost::filesystem::path content, boost::filesystem::path out)
 103 {
 104         string ffprobe = "ffprobe \"" + content.string() + "\" 2> \"" + out.string() + "\"";
 105         LOG_GENERAL (N_("Probing with %1"), ffprobe);
 106         int const r = system (ffprobe.c_str());
 107         if (r == -1 || (WIFEXITED(r) && WEXITSTATUS(r) != 0)) {
 108                 LOG_GENERAL (N_("Could not run ffprobe (system returned %1"), r);
 109         }
 110 }
 111
 112
 113 list<pair<string, string>>
 114 mount_info ()
 115 {
 116         list<pair<string, string>> m;
 117
 118         auto f = setmntent ("/etc/mtab", "r");
 119         if (!f) {
 120                 return m;
 121         }
 122
 123         while (true) {
 124                 struct mntent* mnt = getmntent (f);
 125                 if (!mnt) {
 126                         break;
 127                 }
 128
 129                 m.push_back (make_pair (mnt->mnt_dir, mnt->mnt_type));
 130         }
 131
 132         endmntent (f);
 133
 134         return m;
 135 }
 136
 137
 138 boost::filesystem::path
 139 directory_containing_executable ()
 140 {
 141 #if BOOST_VERSION >= 106100
 142         return boost::dll::program_location().parent_path();
 143 #else
 144         char buffer[PATH_MAX];
 145         ssize_t N = readlink ("/proc/self/exe", buffer, PATH_MAX);
 146         return boost::filesystem::path(string(buffer, N)).parent_path();
 147 #endif
 148 }
 149
 150
 151 boost::filesystem::path
 152 openssl_path ()
 153 {
 154         auto p = directory_containing_executable() / "dcpomatic2_openssl";
 155         if (boost::filesystem::is_regular_file(p)) {
 156                 return p;
 157         }
 158
 159         return "dcpomatic2_openssl";
 160 }
 161
 162
 163 #ifdef DCPOMATIC_DISK
 164 boost::filesystem::path
 165 disk_writer_path ()
 166 {
 167         return directory_containing_executable() / "dcpomatic2_disk_writer";
 168 }
 169 #endif
 170
 171
 172 void
 173 Waker::nudge ()
 174 {
 175
 176 }
 177
 178
 179 Waker::Waker ()
 180 {
 181
 182 }
 183
 184
 185 Waker::~Waker ()
 186 {
 187
 188 }
 189
 190
 191 void
 192 start_tool (string executable)
 193 {
 194         auto batch = directory_containing_executable() / executable;
 195
 196         pid_t pid = fork ();
 197         if (pid == 0) {
 198                 int const r = system (batch.string().c_str());
 199                 exit (WEXITSTATUS (r));
 200         }
 201 }
 202
 203
 204 void
 205 start_batch_converter ()
 206 {
 207         start_tool ("dcpomatic2_batch");
 208 }
 209
 210
 211 void
 212 start_player ()
 213 {
 214         start_tool ("dcpomatic2_player");
 215 }
 216
 217
 218 static
 219 vector<pair<string, string>>
 220 get_mounts (string prefix)
 221 {
 222         vector<pair<string, string>> mounts;
 223
 224         std::ifstream f("/proc/mounts");
 225         string line;
 226         while (f.good()) {
 227                 getline(f, line);
 228                 vector<string> bits;
 229                 boost::algorithm::split (bits, line, boost::is_any_of(" "));
 230                 if (bits.size() > 1 && boost::algorithm::starts_with(bits[0], prefix)) {
 231                         boost::algorithm::replace_all (bits[1], "\\040", " ");
 232                         mounts.push_back(make_pair(bits[0], bits[1]));
 233                         LOG_DISK("Found mounted device %1 from prefix %2", bits[0], prefix);
 234                 }
 235         }
 236
 237         return mounts;
 238 }
 239
 240
 241 vector<Drive>
 242 Drive::get ()
 243 {
 244         vector<Drive> drives;
 245
 246         using namespace boost::filesystem;
 247         auto mounted_devices = get_mounts("/dev/");
 248
 249         for (auto i: directory_iterator("/sys/block")) {
 250                 string const name = i.path().filename().string();
 251                 path device_type_file("/sys/block/" + name + "/device/type");
 252                 optional<string> device_type;
 253                 if (exists(device_type_file)) {
 254                         device_type = dcp::file_to_string (device_type_file);
 255                         boost::trim(*device_type);
 256                 }
 257                 /* Device type 5 is "SCSI_TYPE_ROM" in blkdev.h; seems usually to be a CD/DVD drive */
 258                 if (!boost::algorithm::starts_with(name, "loop") && (!device_type || *device_type != "5")) {
 259                         uint64_t const size = dcp::raw_convert<uint64_t>(dcp::file_to_string(i / "size")) * 512;
 260                         if (size == 0) {
 261                                 continue;
 262                         }
 263                         optional<string> vendor;
 264                         try {
 265                                 vendor = dcp::file_to_string("/sys/block/" + name + "/device/vendor");
 266                                 boost::trim(*vendor);
 267                         } catch (...) {}
 268                         optional<string> model;
 269                         try {
 270                                 model = dcp::file_to_string("/sys/block/" + name + "/device/model");
 271                                 boost::trim(*model);
 272                         } catch (...) {}
 273                         vector<boost::filesystem::path> mount_points;
 274                         for (auto const& j: mounted_devices) {
 275                                 if (boost::algorithm::starts_with(j.first, "/dev/" + name)) {
 276                                         mount_points.push_back (j.second);
 277                                 }
 278                         }
 279                         drives.push_back(Drive("/dev/" + name, mount_points, size, vendor, model));
 280                         LOG_DISK_NC(drives.back().log_summary());
 281                 }
 282         }
 283
 284         return drives;
 285 }
 286
 287
 288 bool
 289 Drive::unmount ()
 290 {
 291         for (auto i: _mount_points) {
 292                 int const r = umount(i.string().c_str());
 293                 LOG_DISK("Tried to unmount %1 and got %2 and %3", i.string(), r, errno);
 294                 if (r == -1) {
 295                         return false;
 296                 }
 297         }
 298         return true;
 299 }
 300
 301
 302 boost::filesystem::path
 303 config_path (optional<string> version)
 304 {
 305         boost::filesystem::path p;
 306         p /= g_get_user_config_dir ();
 307         p /= "dcpomatic2";
 308         if (version) {
 309                 p /= *version;
 310         }
 311         return p;
 312 }
 313
 314
 315 void
 316 disk_write_finished ()
 317 {
 318
 319 }
 320
 321 bool
 322 show_in_file_manager (boost::filesystem::path dir, boost::filesystem::path)
 323 {
 324         int r = system ("which nautilus");
 325         if (WEXITSTATUS(r) == 0) {
 326                 r = system (String::compose("nautilus \"%1\"", dir.string()).c_str());
 327                 return static_cast<bool>(WEXITSTATUS(r));
 328         } else {
 329                 int r = system ("which konqueror");
 330                 if (WEXITSTATUS(r) == 0) {
 331                         r = system (String::compose("konqueror \"%1\"", dir.string()).c_str());
 332                         return static_cast<bool>(WEXITSTATUS(r));
 333                 }
 334         }
 335
 336         return true;
 337 }
 338