1 // terrasync.cxx -- "JIT" scenery fetcher
3 // Written by Curtis Olson, started November 2002.
5 // Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
6 // Copyright (C) 2008 Alexander R. Perry <alex.perry@ieee.org>
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
35 #elif defined(_MSC_VER)
39 #include <stdlib.h> // atoi() atof() abs() system()
40 #include <signal.h> // signal()
42 #include <simgear/compiler.h>
50 #include <simgear/io/raw_socket.hxx>
51 #include <simgear/bucket/newbucket.hxx>
52 #include <simgear/misc/sg_path.hxx>
54 #ifdef HAVE_SVN_CLIENT_H
55 # ifdef HAVE_LIBSVN_CLIENT_1
56 # include <svn_auth.h>
57 # include <svn_client.h>
58 # include <svn_cmdline.h>
59 # include <svn_pools.h>
61 # undef HAVE_SVN_CLIENT_H
67 const char* source_base = NULL;
68 const char* svn_base =
69 "http://terrascenery.googlecode.com/svn/trunk/data/Scenery";
70 const char* rsync_base = "scenery.flightgear.org::Scenery";
71 const char* dest_base = "terrasyncdir";
72 const char* rsync_cmd =
73 "rsync --verbose --archive --delete --perms --owner --group";
75 #ifdef HAVE_SVN_CLIENT_H
79 const char* svn_cmd = "svn checkout";
83 static void usage( const string& prog ) {
85 "Usage: terrasync [options]\n"
87 " -d <dest> destination directory [required]\n"
88 " -R transport using pipe to rsync\n"
89 " -S transport using built-in svn\n"
90 " -p <port> listen on UDP port [default: 5501]\n"
91 " -s <source> source base [default: '']\n"
92 " -pid <pidfile> write PID to file\n"
93 " -v be more verbose\n"
96 #ifdef HAVE_SVN_CLIENT_H
97 cout << " (defaults to the built in subversion)" << endl;
99 cout << " (defaults to rsync, using external commands)" << endl;
102 cout << "\nExample:\n"
103 "pid=$(cat $pidfile 2>/dev/null)\n"
104 "if test -n \"$pid\" && kill -0 $pid ; then\n"
105 " echo \"terrasync already running: $pid\"\n"
107 " nice /games/sport/fgs/utils/TerraSync/terrasync \\\n"
108 " -v -pid $pidfile -S -p 5500 -d /games/orig/terrasync &\n"
113 deque<string> waitingTiles;
114 typedef map<string,time_t> CompletedTiles;
115 CompletedTiles completedTiles;
116 simgear::Socket theSocket;
118 #ifdef HAVE_SVN_CLIENT_H
120 // Things we need for doing subversion checkout - often
121 apr_pool_t *mysvn_pool = NULL;
122 svn_client_ctx_t *mysvn_ctx = NULL;
123 svn_opt_revision_t *mysvn_rev = NULL;
124 svn_opt_revision_t *mysvn_rev_peg = NULL;
126 static const svn_version_checklist_t mysvn_checklist[] = {
127 { "svn_subr", svn_subr_version },
128 { "svn_client", svn_client_version },
132 // Configure our subversion session
133 int mysvn_setup(void) {
134 // Are we already prepared?
135 if (mysvn_pool) return EXIT_SUCCESS;
136 // No, so initialize svn internals generally
138 // there is a segfault when providing an error stream.
139 // Apparently, calling setvbuf with a nul buffer is
140 // not supported under msvc 7.1 ( code inside svn_cmdline_init )
141 if (svn_cmdline_init("terrasync", 0) != EXIT_SUCCESS)
144 if (svn_cmdline_init("terrasync", stderr) != EXIT_SUCCESS)
148 apr_pool_create(&pool, NULL);
149 svn_error_t *err = NULL;
150 SVN_VERSION_DEFINE(mysvn_version);
151 err = svn_ver_check_list(&mysvn_version, mysvn_checklist);
153 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
154 err = svn_ra_initialize(pool);
156 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
157 char *config_dir = NULL;
158 err = svn_config_ensure(config_dir, pool);
160 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
161 err = svn_client_create_context(&mysvn_ctx, pool);
163 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
164 err = svn_config_get_config(&(mysvn_ctx->config),
167 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
169 cfg = ( svn_config_t*) apr_hash_get(
171 SVN_CONFIG_CATEGORY_CONFIG,
172 APR_HASH_KEY_STRING);
174 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
175 svn_auth_baton_t *ab;
176 err = svn_cmdline_setup_auth_baton(&ab,
177 TRUE, NULL, NULL, config_dir, TRUE, cfg,
178 mysvn_ctx->cancel_func, mysvn_ctx->cancel_baton, pool);
180 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
181 mysvn_ctx->auth_baton = ab;
182 mysvn_ctx->conflict_func = NULL;
183 mysvn_ctx->conflict_baton = NULL;
184 // Now our magic revisions
185 mysvn_rev = (svn_opt_revision_t*) apr_palloc(pool,
186 sizeof(svn_opt_revision_t));
189 mysvn_rev_peg = (svn_opt_revision_t*) apr_palloc(pool,
190 sizeof(svn_opt_revision_t));
193 mysvn_rev->kind = svn_opt_revision_head;
194 mysvn_rev_peg->kind = svn_opt_revision_unspecified;
195 // Success if we got this far
202 // sync one directory tree
203 void sync_tree(const char* dir) {
206 SGPath path( dest_base );
209 rc = path.create_dir( 0755 );
211 cout << "Return code = " << rc << endl;
216 #ifdef HAVE_SVN_CLIENT_H
217 cout << dir << " ... ";
219 char dest_base_dir[512];
220 snprintf( command, 512,
221 "%s/%s", source_base, dir);
222 snprintf( dest_base_dir, 512,
223 "%s/%s", dest_base, dir);
224 svn_error_t *err = NULL;
225 if (mysvn_setup() != EXIT_SUCCESS)
227 apr_pool_t *subpool = svn_pool_create(mysvn_pool);
228 err = svn_client_checkout3(NULL,
239 // Report errors from the checkout attempt
240 cout << "failed: " << endl
241 << err->message << endl;
242 svn_error_clear(err);
245 cout << "done" << endl;
247 svn_pool_destroy(subpool);
251 snprintf( command, 512,
252 "%s %s/%s %s/%s", svn_cmd,
257 snprintf( command, 512,
258 "%s %s/%s/ %s/%s/", rsync_cmd,
262 cout << command << endl;
263 rc = system( command );
265 cout << "Return code = " << rc << endl;
266 if (rc == 5120) exit(1);
270 #if defined(_MSC_VER) || defined(__MINGW32__)
271 typedef void (__cdecl * sighandler_t)(int);
272 #elif defined( __APPLE__ )
273 typedef sig_t sighandler_t;
276 bool terminating = false;
277 sighandler_t prior_signal_handlers[32];
278 int termination_triggering_signals[] = {
279 #if defined(_MSC_VER) || defined(__MINGW32__)
280 SIGINT, SIGILL, SIGFPE, SIGSEGV, SIGTERM, SIGBREAK, SIGABRT,
282 SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGTERM,
284 0}; // zero terminated
286 void terminate_request_handler(int param) {
287 char msg[] = "\nReceived signal XX, intend to exit soon.\n"
288 "repeat the signal to force immediate termination.\n";
289 msg[17] = '0' + param / 10;
290 msg[18] = '0' + param % 10;
291 write(1, msg, sizeof(msg) - 1);
293 signal(param, prior_signal_handlers[param]);
298 const int nowhere = -9999;
302 static void parse_message( const string &msg, int *lat, int *lon ) {
306 // find GGA string and advance to start of lat
307 string::size_type pos = text.find( "$GPGGA" );
308 if ( pos == string::npos )
314 string tmp = text.substr( pos + 7 );
315 pos = tmp.find( "," );
316 tmp = tmp.substr( pos + 1 );
317 // cout << "-> " << tmp << endl;
319 // find lat then advance to start of hemisphere
320 pos = tmp.find( "," );
321 string lats = tmp.substr( 0, pos );
322 dlat = atof( lats.c_str() ) / 100.0;
323 tmp = tmp.substr( pos + 1 );
325 // find N/S hemisphere and advance to start of lon
326 if ( tmp.substr( 0, 1 ) == "S" ) {
329 pos = tmp.find( "," );
330 tmp = tmp.substr( pos + 1 );
333 pos = tmp.find( "," );
334 string lons = tmp.substr( 0, pos );
335 dlon = atof( lons.c_str() ) / 100.0;
336 tmp = tmp.substr( pos + 1 );
338 // find E/W hemisphere and advance to start of lon
339 if ( tmp.substr( 0, 1 ) == "W" ) {
344 *lat = (int)dlat - 1;
350 *lon = (int)dlon - 1;
355 if ((dlon == 0) && (dlat == 0)) {
363 static void sync_area( int lat, int lon ) {
364 if ( lat < -90 || lat > 90 || lon < -180 || lon > 180 )
367 int baselat, baselon;
370 int base = (int)(lat / 10);
371 if ( lat == base * 10 ) {
374 baselat = (base - 1) * 10;
378 baselat = (int)(lat / 10) * 10;
382 int base = (int)(lon / 10);
383 if ( lon == base * 10 ) {
386 baselon = (base - 1) * 10;
390 baselon = (int)(lon / 10) * 10;
394 const char* terrainobjects[3] = { "Terrain", "Objects", 0 };
396 for (const char** tree = &terrainobjects[0]; *tree; tree++) {
398 snprintf( dir, 512, "%s/%c%03d%c%02d/%c%03d%c%02d",
400 EW, abs(baselon), NS, abs(baselat),
401 EW, abs(lon), NS, abs(lat) );
402 waitingTiles.push_back( dir );
408 static void sync_areas( int lat, int lon, int lat_dir, int lon_dir ) {
409 // do current 1x1 degree area first
410 sync_area( lat, lon );
412 if ( lat_dir == 0 && lon_dir == 0 ) {
413 // now do surrounding 8 1x1 degree areas.
414 for ( int i = lat - 1; i <= lat + 1; ++i ) {
415 for ( int j = lon - 1; j <= lon + 1; ++j ) {
416 if ( i != lat || j != lon ) {
422 if ( lat_dir != 0 ) {
423 sync_area( lat + lat_dir, lon );
424 sync_area( lat + lat_dir, lon - 1 );
425 sync_area( lat + lat_dir, lon + 1 );
427 if ( lon_dir != 0 ) {
428 sync_area( lat, lon + lon_dir );
429 sync_area( lat - 1, lon + lon_dir );
430 sync_area( lat + 1, lon + lon_dir );
435 void getWaitingTile() {
436 while ( !waitingTiles.empty() ) {
437 CompletedTiles::iterator ii =
438 completedTiles.find( waitingTiles.front() );
439 time_t now = time(0);
440 if ( ii == completedTiles.end() || ii->second + 600 < now ) {
441 sync_tree(waitingTiles.front().c_str());
442 completedTiles[ waitingTiles.front() ] = now;
443 waitingTiles.pop_front();
446 waitingTiles.pop_front();
450 int main( int argc, char **argv ) {
452 char host[256] = "localhost";
453 bool testing = false;
454 bool do_checkout(true);
456 const char* pidfn = "";
461 if ( (string)argv[i] == "-p" ) {
463 port = atoi( argv[i] );
464 } else if ( string(argv[i]).find("-pid") == 0 ) {
467 cout << "pidfn: " << pidfn << endl;
468 } else if ( (string)argv[i] == "-s" ) {
470 source_base = argv[i];
471 } else if ( (string)argv[i] == "-d" ) {
474 } else if ( (string)argv[i] == "-R" ) {
476 } else if ( (string)argv[i] == "-S" ) {
478 } else if ( (string)argv[i] == "-v" ) {
480 } else if ( (string)argv[i] == "-T" ) {
482 } else if ( (string)argv[i] == "-h" ) {
486 cerr << "Unrecognized verbiage '" << argv[i] << "'" << endl;
495 pidstream.open(pidfn);
496 if (!pidstream.good()) {
497 cerr << "Cannot open pid file '" << pidfn << "': ";
501 pidstream << getpid() << endl;
505 // Use the appropriate default for the "-s" flag
506 if (source_base == NULL) {
508 source_base = svn_base;
510 source_base = rsync_base;
513 // Must call this before any other net stuff
514 simgear::Socket::initSockets();
516 if ( ! theSocket.open( false ) ) { // open a UDP socket
517 printf("error opening socket\n");
521 if ( theSocket.bind( host, port ) == -1 ) {
522 printf("error binding to port %d\n", port);
530 int last_lat = nowhere;
531 int last_lon = nowhere;
532 bool recv_msg = false;
536 for ( synced_other = 'K'; synced_other <= 'Z'; synced_other++ ) {
538 snprintf( dir, 512, "Airports/%c", synced_other );
539 waitingTiles.push_back( dir );
541 for ( synced_other = 'A'; synced_other <= 'J'; synced_other++ ) {
543 snprintf( dir, 512, "Airports/%c", synced_other );
544 waitingTiles.push_back( dir );
547 waitingTiles.push_back( "Models" );
552 for (int* sigp=termination_triggering_signals; *sigp; sigp++) {
553 prior_signal_handlers[*sigp] =
554 signal(*sigp, *terminate_request_handler);
555 if (verbose) cout << "Intercepted signal " << *sigp << endl;
558 while ( !terminating ) {
562 // No FGFS communications
565 recv_msg = (lat != last_lat) || (lon != last_lon);
567 if (verbose && waitingTiles.empty()) {
568 cout << "Idle; waiting for FlightGear position\n";
570 theSocket.setBlocking(waitingTiles.empty());
571 len = theSocket.recv(msg, maxlen, 0);
575 if (verbose) cout << "recv length: " << len << endl;
576 parse_message( msg, &lat, &lon );
581 // Ignore messages where the location does not change
582 if ( lat != last_lat || lon != last_lon ) {
583 cout << "pos in msg = " << lat << "," << lon << endl;
584 deque<string> oldRequests;
585 oldRequests.swap( waitingTiles );
586 int lat_dir, lon_dir, dist;
587 if ( last_lat == nowhere || last_lon == nowhere ) {
588 lat_dir = lon_dir = 0;
590 dist = lat - last_lat;
592 lat_dir = dist / abs(dist);
596 dist = lon - last_lon;
598 lon_dir = dist / abs(dist);
603 cout << "lat = " << lat << " lon = " << lon << endl;
604 cout << "lat_dir = " << lat_dir << " "
605 << "lon_dir = " << lon_dir << endl;
606 sync_areas( lat, lon, lat_dir, lon_dir );
607 while ( !oldRequests.empty() ) {
608 waitingTiles.push_back( oldRequests.front() );
609 oldRequests.pop_front();
616 // No messages inbound, so process some pending work
617 else if ( !waitingTiles.empty() ) {
621 else if ( testing ) {
630 } // while !terminating