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.
37 #include <stdlib.h> // atoi() atof() abs() system()
38 #include <signal.h> // signal()
40 #include <simgear/compiler.h>
48 #include <plib/netSocket.h>
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 std::deque<std::string> waitingTiles;
114 typedef std::map<std::string,time_t> CompletedTiles;
115 CompletedTiles completedTiles;
117 #ifdef HAVE_SVN_CLIENT_H
119 // Things we need for doing subversion checkout - often
120 apr_pool_t *mysvn_pool = NULL;
121 svn_client_ctx_t *mysvn_ctx = NULL;
122 svn_opt_revision_t *mysvn_rev = NULL;
123 svn_opt_revision_t *mysvn_rev_peg = NULL;
125 static const svn_version_checklist_t mysvn_checklist[] = {
126 { "svn_subr", svn_subr_version },
127 { "svn_client", svn_client_version },
128 { "svn_wc", svn_wc_version },
129 { "svn_ra", svn_ra_version },
130 { "svn_delta", svn_delta_version },
131 { "svn_diff", svn_diff_version },
135 // Configure our subversion session
136 int mysvn_setup(void) {
137 // Are we already prepared?
138 if (mysvn_pool) return EXIT_SUCCESS;
139 // No, so initialize svn internals generally
141 // there is a segfault when providing an error stream.
142 // Apparently, calling setvbuf with a nul buffer is
143 // not supported under msvc 7.1 ( code inside svn_cmdline_init )
144 if (svn_cmdline_init("terrasync", 0) != EXIT_SUCCESS)
147 if (svn_cmdline_init("terrasync", stderr) != EXIT_SUCCESS)
151 apr_pool_create(&pool, NULL);
152 svn_error_t *err = NULL;
153 SVN_VERSION_DEFINE(mysvn_version);
154 err = svn_ver_check_list(&mysvn_version, mysvn_checklist);
156 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
157 err = svn_ra_initialize(pool);
159 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
160 char *config_dir = NULL;
161 err = svn_config_ensure(config_dir, pool);
163 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
164 err = svn_client_create_context(&mysvn_ctx, pool);
166 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
167 err = svn_config_get_config(&(mysvn_ctx->config),
170 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
172 cfg = ( svn_config_t*) apr_hash_get(
174 SVN_CONFIG_CATEGORY_CONFIG,
175 APR_HASH_KEY_STRING);
177 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
178 svn_auth_baton_t *ab;
179 err = svn_cmdline_setup_auth_baton(&ab,
180 TRUE, NULL, NULL, config_dir, TRUE, cfg,
181 mysvn_ctx->cancel_func, mysvn_ctx->cancel_baton, pool);
183 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
184 mysvn_ctx->auth_baton = ab;
185 mysvn_ctx->conflict_func = NULL;
186 mysvn_ctx->conflict_baton = NULL;
187 // Now our magic revisions
188 mysvn_rev = (svn_opt_revision_t*) apr_palloc(pool,
189 sizeof(svn_opt_revision_t));
192 mysvn_rev_peg = (svn_opt_revision_t*) apr_palloc(pool,
193 sizeof(svn_opt_revision_t));
196 mysvn_rev->kind = svn_opt_revision_head;
197 mysvn_rev_peg->kind = svn_opt_revision_unspecified;
198 // Success if we got this far
205 // sync one directory tree
206 void sync_tree(const char* dir) {
209 SGPath path( dest_base );
212 rc = path.create_dir( 0755 );
214 cout << "Return code = " << rc << endl;
219 #ifdef HAVE_SVN_CLIENT_H
220 cout << dir << " ... ";
222 char dest_base_dir[512];
223 snprintf( command, 512,
224 "%s/%s", source_base, dir);
225 snprintf( dest_base_dir, 512,
226 "%s/%s", dest_base, dir);
227 svn_error_t *err = NULL;
228 if (mysvn_setup() != EXIT_SUCCESS)
230 apr_pool_t *subpool = svn_pool_create(mysvn_pool);
231 err = svn_client_checkout3(NULL,
242 // Report errors from the checkout attempt
243 cout << "failed: " << endl
244 << err->message << endl;
245 svn_error_clear(err);
248 cout << "done" << endl;
250 svn_pool_destroy(subpool);
254 snprintf( command, 512,
255 "%s %s/%s %s/%s", svn_cmd,
260 snprintf( command, 512,
261 "%s %s/%s/ %s/%s/", rsync_cmd,
265 cout << command << endl;
266 rc = system( command );
268 cout << "Return code = " << rc << endl;
269 if (rc == 5120) exit(1);
274 typedef void (__cdecl * sighandler_t)(int);
277 bool terminating = false;
278 sighandler_t prior_signal_handlers[32];
279 int termination_triggering_signals[] =
281 {SIGHUP, SIGINT, SIGQUIT, SIGKILL, 0}; // zero terminated
283 {SIGINT, SIGILL, SIGFPE, SIGSEGV, SIGTERM, SIGBREAK, SIGABRT, 0}; // zero terminated
286 void terminate_request_handler(int param) {
287 cout << "\nReceived signal " << param << ", "
288 << "intend to terminate soon, "
289 << "repeat to force an immediate effect.\n";
291 signal(param, prior_signal_handlers[param]);
295 const int nowhere = -9999;
299 static void parse_message( const string &msg, int *lat, int *lon ) {
303 // find GGA string and advance to start of lat
304 string::size_type pos = text.find( "$GPGGA" );
305 if ( pos == string::npos )
311 string tmp = text.substr( pos + 7 );
312 pos = tmp.find( "," );
313 tmp = tmp.substr( pos + 1 );
314 // cout << "-> " << tmp << endl;
316 // find lat then advance to start of hemisphere
317 pos = tmp.find( "," );
318 string lats = tmp.substr( 0, pos );
319 dlat = atof( lats.c_str() ) / 100.0;
320 tmp = tmp.substr( pos + 1 );
322 // find N/S hemisphere and advance to start of lon
323 if ( tmp.substr( 0, 1 ) == "S" ) {
326 pos = tmp.find( "," );
327 tmp = tmp.substr( pos + 1 );
330 pos = tmp.find( "," );
331 string lons = tmp.substr( 0, pos );
332 dlon = atof( lons.c_str() ) / 100.0;
333 tmp = tmp.substr( pos + 1 );
335 // find E/W hemisphere and advance to start of lon
336 if ( tmp.substr( 0, 1 ) == "W" ) {
341 *lat = (int)dlat - 1;
347 *lon = (int)dlon - 1;
352 if ((dlon == 0) && (dlat == 0)) {
360 static void sync_area( int lat, int lon ) {
361 if ( lat < -90 || lat > 90 || lon < -180 || lon > 180 )
364 int baselat, baselon;
367 int base = (int)(lat / 10);
368 if ( lat == base * 10 ) {
371 baselat = (base - 1) * 10;
375 baselat = (int)(lat / 10) * 10;
379 int base = (int)(lon / 10);
380 if ( lon == base * 10 ) {
383 baselon = (base - 1) * 10;
387 baselon = (int)(lon / 10) * 10;
391 const char* terrainobjects[3] = { "Terrain", "Objects", 0 };
393 for (const char** tree = &terrainobjects[0]; *tree; tree++) {
395 snprintf( dir, 512, "%s/%c%03d%c%02d/%c%03d%c%02d",
397 EW, abs(baselon), NS, abs(baselat),
398 EW, abs(lon), NS, abs(lat) );
399 waitingTiles.push_back( dir );
405 static void sync_areas( int lat, int lon, int lat_dir, int lon_dir ) {
406 // do current 1x1 degree area first
407 sync_area( lat, lon );
409 if ( lat_dir == 0 && lon_dir == 0 ) {
410 // now do surrounding 8 1x1 degree areas.
411 for ( int i = lat - 1; i <= lat + 1; ++i ) {
412 for ( int j = lon - 1; j <= lon + 1; ++j ) {
413 if ( i != lat || j != lon ) {
419 if ( lat_dir != 0 ) {
420 sync_area( lat + lat_dir, lon );
421 sync_area( lat + lat_dir, lon - 1 );
422 sync_area( lat + lat_dir, lon + 1 );
424 if ( lon_dir != 0 ) {
425 sync_area( lat, lon + lon_dir );
426 sync_area( lat - 1, lon + lon_dir );
427 sync_area( lat + 1, lon + lon_dir );
432 void getWaitingTile() {
433 while ( !waitingTiles.empty() ) {
434 CompletedTiles::iterator ii =
435 completedTiles.find( waitingTiles.front() );
436 time_t now = time(0);
437 if ( ii == completedTiles.end() || ii->second + 600 < now ) {
438 sync_tree(waitingTiles.front().c_str());
439 completedTiles[ waitingTiles.front() ] = now;
440 waitingTiles.pop_front();
443 waitingTiles.pop_front();
447 int main( int argc, char **argv ) {
449 char host[256] = "localhost";
450 bool testing = false;
451 bool do_checkout(true);
453 const char* pidfn = "";
458 if ( (string)argv[i] == "-p" ) {
460 port = atoi( argv[i] );
461 } else if ( string(argv[i]).find("-pid") == 0 ) {
464 cout << "pidfn: " << pidfn << endl;
465 } else if ( (string)argv[i] == "-s" ) {
467 source_base = argv[i];
468 } else if ( (string)argv[i] == "-d" ) {
471 } else if ( (string)argv[i] == "-R" ) {
473 } else if ( (string)argv[i] == "-S" ) {
475 } else if ( (string)argv[i] == "-v" ) {
477 } else if ( (string)argv[i] == "-T" ) {
479 } else if ( (string)argv[i] == "-h" ) {
483 cerr << "Unrecognized verbiage '" << argv[i] << "'" << endl;
492 pidstream.open(pidfn);
493 if (!pidstream.good()) {
494 cerr << "Cannot open pid file '" << pidfn << "': ";
498 pidstream << getpid() << endl;
502 // Use the appropriate default for the "-s" flag
503 if (source_base == NULL) {
505 source_base = svn_base;
507 source_base = rsync_base;
510 // Must call this before any other net stuff
511 netInit( &argc,argv );
514 if ( ! s.open( false ) ) { // open a UDP socket
515 printf("error opening socket\n");
519 if ( s.bind( host, port ) == -1 ) {
520 printf("error binding to port %d\n", port);
528 int last_lat = nowhere;
529 int last_lon = nowhere;
530 bool recv_msg = false;
534 for ( synced_other = 'K'; synced_other <= 'Z'; synced_other++ ) {
536 snprintf( dir, 512, "Airports/%c", synced_other );
537 waitingTiles.push_back( dir );
539 for ( synced_other = 'A'; synced_other <= 'J'; synced_other++ ) {
541 snprintf( dir, 512, "Airports/%c", synced_other );
542 waitingTiles.push_back( dir );
545 waitingTiles.push_back( "Models" );
550 for (int* sigp=termination_triggering_signals; *sigp; sigp++) {
551 prior_signal_handlers[*sigp] =
552 signal(*sigp, *terminate_request_handler);
553 if (verbose) cout << "Intercepted signal " << *sigp << endl;
556 while ( !terminating ) {
560 // No FGFS communications
563 recv_msg = (lat != last_lat) || (lon != last_lon);
565 if (verbose && waitingTiles.empty()) {
566 cout << "Idle; waiting for FlightGear position\n";
568 s.setBlocking(waitingTiles.empty());
569 len = s.recv(msg, maxlen, 0);
573 if (verbose) cout << "recv length: " << len << endl;
574 parse_message( msg, &lat, &lon );
579 // Ignore messages where the location does not change
580 if ( lat != last_lat || lon != last_lon ) {
581 cout << "pos in msg = " << lat << "," << lon << endl;
582 std::deque<std::string> oldRequests;
583 oldRequests.swap( waitingTiles );
584 int lat_dir, lon_dir, dist;
585 if ( last_lat == nowhere || last_lon == nowhere ) {
586 lat_dir = lon_dir = 0;
588 dist = lat - last_lat;
590 lat_dir = dist / abs(dist);
594 dist = lon - last_lon;
596 lon_dir = dist / abs(dist);
601 cout << "lat = " << lat << " lon = " << lon << endl;
602 cout << "lat_dir = " << lat_dir << " "
603 << "lon_dir = " << lon_dir << endl;
604 sync_areas( lat, lon, lat_dir, lon_dir );
605 while ( !oldRequests.empty() ) {
606 waitingTiles.push_back( oldRequests.front() );
607 oldRequests.pop_front();
614 // No messages inbound, so process some pending work
615 else if ( !waitingTiles.empty() ) {
619 else if ( testing ) {
624 } // while !terminating