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 <plib/netSocket.h>
53 #include <simgear/bucket/newbucket.hxx>
54 #include <simgear/misc/sg_path.hxx>
56 #ifdef HAVE_SVN_CLIENT_H
57 # ifdef HAVE_LIBSVN_CLIENT_1
58 # include <svn_auth.h>
59 # include <svn_client.h>
60 # include <svn_cmdline.h>
61 # include <svn_pools.h>
63 # undef HAVE_SVN_CLIENT_H
69 const char* source_base = NULL;
70 const char* svn_base =
71 "http://terrascenery.googlecode.com/svn/trunk/data/Scenery";
72 const char* rsync_base = "scenery.flightgear.org::Scenery";
73 const char* dest_base = "terrasyncdir";
74 const char* rsync_cmd =
75 "rsync --verbose --archive --delete --perms --owner --group";
77 #ifdef HAVE_SVN_CLIENT_H
81 const char* svn_cmd = "svn checkout";
85 static void usage( const string& prog ) {
87 "Usage: terrasync [options]\n"
89 " -d <dest> destination directory [required]\n"
90 " -R transport using pipe to rsync\n"
91 " -S transport using built-in svn\n"
92 " -p <port> listen on UDP port [default: 5501]\n"
93 " -s <source> source base [default: '']\n"
94 " -pid <pidfile> write PID to file\n"
95 " -v be more verbose\n"
98 #ifdef HAVE_SVN_CLIENT_H
99 cout << " (defaults to the built in subversion)" << endl;
101 cout << " (defaults to rsync, using external commands)" << endl;
104 cout << "\nExample:\n"
105 "pid=$(cat $pidfile 2>/dev/null)\n"
106 "if test -n \"$pid\" && kill -0 $pid ; then\n"
107 " echo \"terrasync already running: $pid\"\n"
109 " nice /games/sport/fgs/utils/TerraSync/terrasync \\\n"
110 " -v -pid $pidfile -S -p 5500 -d /games/orig/terrasync &\n"
115 deque<string> waitingTiles;
116 typedef map<string,time_t> CompletedTiles;
117 CompletedTiles completedTiles;
120 #ifdef HAVE_SVN_CLIENT_H
122 // Things we need for doing subversion checkout - often
123 apr_pool_t *mysvn_pool = NULL;
124 svn_client_ctx_t *mysvn_ctx = NULL;
125 svn_opt_revision_t *mysvn_rev = NULL;
126 svn_opt_revision_t *mysvn_rev_peg = NULL;
128 static const svn_version_checklist_t mysvn_checklist[] = {
129 { "svn_subr", svn_subr_version },
130 { "svn_client", svn_client_version },
131 { "svn_wc", svn_wc_version },
132 { "svn_ra", svn_ra_version },
133 { "svn_delta", svn_delta_version },
134 { "svn_diff", svn_diff_version },
138 // Configure our subversion session
139 int mysvn_setup(void) {
140 // Are we already prepared?
141 if (mysvn_pool) return EXIT_SUCCESS;
142 // No, so initialize svn internals generally
144 // there is a segfault when providing an error stream.
145 // Apparently, calling setvbuf with a nul buffer is
146 // not supported under msvc 7.1 ( code inside svn_cmdline_init )
147 if (svn_cmdline_init("terrasync", 0) != EXIT_SUCCESS)
150 if (svn_cmdline_init("terrasync", stderr) != EXIT_SUCCESS)
154 apr_pool_create(&pool, NULL);
155 svn_error_t *err = NULL;
156 SVN_VERSION_DEFINE(mysvn_version);
157 err = svn_ver_check_list(&mysvn_version, mysvn_checklist);
159 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
160 err = svn_ra_initialize(pool);
162 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
163 char *config_dir = NULL;
164 err = svn_config_ensure(config_dir, pool);
166 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
167 err = svn_client_create_context(&mysvn_ctx, pool);
169 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
170 err = svn_config_get_config(&(mysvn_ctx->config),
173 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
175 cfg = ( svn_config_t*) apr_hash_get(
177 SVN_CONFIG_CATEGORY_CONFIG,
178 APR_HASH_KEY_STRING);
180 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
181 svn_auth_baton_t *ab;
182 err = svn_cmdline_setup_auth_baton(&ab,
183 TRUE, NULL, NULL, config_dir, TRUE, cfg,
184 mysvn_ctx->cancel_func, mysvn_ctx->cancel_baton, pool);
186 return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
187 mysvn_ctx->auth_baton = ab;
188 mysvn_ctx->conflict_func = NULL;
189 mysvn_ctx->conflict_baton = NULL;
190 // Now our magic revisions
191 mysvn_rev = (svn_opt_revision_t*) apr_palloc(pool,
192 sizeof(svn_opt_revision_t));
195 mysvn_rev_peg = (svn_opt_revision_t*) apr_palloc(pool,
196 sizeof(svn_opt_revision_t));
199 mysvn_rev->kind = svn_opt_revision_head;
200 mysvn_rev_peg->kind = svn_opt_revision_unspecified;
201 // Success if we got this far
208 // sync one directory tree
209 void sync_tree(const char* dir) {
212 SGPath path( dest_base );
215 rc = path.create_dir( 0755 );
217 cout << "Return code = " << rc << endl;
222 #ifdef HAVE_SVN_CLIENT_H
223 cout << dir << " ... ";
225 char dest_base_dir[512];
226 snprintf( command, 512,
227 "%s/%s", source_base, dir);
228 snprintf( dest_base_dir, 512,
229 "%s/%s", dest_base, dir);
230 svn_error_t *err = NULL;
231 if (mysvn_setup() != EXIT_SUCCESS)
233 apr_pool_t *subpool = svn_pool_create(mysvn_pool);
234 err = svn_client_checkout3(NULL,
245 // Report errors from the checkout attempt
246 cout << "failed: " << endl
247 << err->message << endl;
248 svn_error_clear(err);
251 cout << "done" << endl;
253 svn_pool_destroy(subpool);
257 snprintf( command, 512,
258 "%s %s/%s %s/%s", svn_cmd,
263 snprintf( command, 512,
264 "%s %s/%s/ %s/%s/", rsync_cmd,
268 cout << command << endl;
269 rc = system( command );
271 cout << "Return code = " << rc << endl;
272 if (rc == 5120) exit(1);
277 typedef void (__cdecl * sighandler_t)(int);
278 #elif defined( __APPLE__ )
279 typedef sig_t sighandler_t;
282 bool terminating = false;
283 sighandler_t prior_signal_handlers[32];
284 int termination_triggering_signals[] = {
286 SIGHUP, SIGINT, SIGQUIT, SIGKILL,
288 SIGINT, SIGILL, SIGFPE, SIGSEGV, SIGTERM, SIGBREAK, SIGABRT,
290 0}; // zero terminated
292 void terminate_request_handler(int param) {
293 char msg[] = "\nReceived signal XX, intend to exit soon.\n"
294 "repeat the signal to force immediate termination.\n";
295 msg[17] = '0' + param / 10;
296 msg[18] = '0' + param % 10;
297 write(1, msg, sizeof(msg) - 1);
299 signal(param, prior_signal_handlers[param]);
304 const int nowhere = -9999;
308 static void parse_message( const string &msg, int *lat, int *lon ) {
312 // find GGA string and advance to start of lat
313 string::size_type pos = text.find( "$GPGGA" );
314 if ( pos == string::npos )
320 string tmp = text.substr( pos + 7 );
321 pos = tmp.find( "," );
322 tmp = tmp.substr( pos + 1 );
323 // cout << "-> " << tmp << endl;
325 // find lat then advance to start of hemisphere
326 pos = tmp.find( "," );
327 string lats = tmp.substr( 0, pos );
328 dlat = atof( lats.c_str() ) / 100.0;
329 tmp = tmp.substr( pos + 1 );
331 // find N/S hemisphere and advance to start of lon
332 if ( tmp.substr( 0, 1 ) == "S" ) {
335 pos = tmp.find( "," );
336 tmp = tmp.substr( pos + 1 );
339 pos = tmp.find( "," );
340 string lons = tmp.substr( 0, pos );
341 dlon = atof( lons.c_str() ) / 100.0;
342 tmp = tmp.substr( pos + 1 );
344 // find E/W hemisphere and advance to start of lon
345 if ( tmp.substr( 0, 1 ) == "W" ) {
350 *lat = (int)dlat - 1;
356 *lon = (int)dlon - 1;
361 if ((dlon == 0) && (dlat == 0)) {
369 static void sync_area( int lat, int lon ) {
370 if ( lat < -90 || lat > 90 || lon < -180 || lon > 180 )
373 int baselat, baselon;
376 int base = (int)(lat / 10);
377 if ( lat == base * 10 ) {
380 baselat = (base - 1) * 10;
384 baselat = (int)(lat / 10) * 10;
388 int base = (int)(lon / 10);
389 if ( lon == base * 10 ) {
392 baselon = (base - 1) * 10;
396 baselon = (int)(lon / 10) * 10;
400 const char* terrainobjects[3] = { "Terrain", "Objects", 0 };
402 for (const char** tree = &terrainobjects[0]; *tree; tree++) {
404 snprintf( dir, 512, "%s/%c%03d%c%02d/%c%03d%c%02d",
406 EW, abs(baselon), NS, abs(baselat),
407 EW, abs(lon), NS, abs(lat) );
408 waitingTiles.push_back( dir );
414 static void sync_areas( int lat, int lon, int lat_dir, int lon_dir ) {
415 // do current 1x1 degree area first
416 sync_area( lat, lon );
418 if ( lat_dir == 0 && lon_dir == 0 ) {
419 // now do surrounding 8 1x1 degree areas.
420 for ( int i = lat - 1; i <= lat + 1; ++i ) {
421 for ( int j = lon - 1; j <= lon + 1; ++j ) {
422 if ( i != lat || j != lon ) {
428 if ( lat_dir != 0 ) {
429 sync_area( lat + lat_dir, lon );
430 sync_area( lat + lat_dir, lon - 1 );
431 sync_area( lat + lat_dir, lon + 1 );
433 if ( lon_dir != 0 ) {
434 sync_area( lat, lon + lon_dir );
435 sync_area( lat - 1, lon + lon_dir );
436 sync_area( lat + 1, lon + lon_dir );
441 void getWaitingTile() {
442 while ( !waitingTiles.empty() ) {
443 CompletedTiles::iterator ii =
444 completedTiles.find( waitingTiles.front() );
445 time_t now = time(0);
446 if ( ii == completedTiles.end() || ii->second + 600 < now ) {
447 sync_tree(waitingTiles.front().c_str());
448 completedTiles[ waitingTiles.front() ] = now;
449 waitingTiles.pop_front();
452 waitingTiles.pop_front();
456 int main( int argc, char **argv ) {
458 char host[256] = "localhost";
459 bool testing = false;
460 bool do_checkout(true);
462 const char* pidfn = "";
467 if ( (string)argv[i] == "-p" ) {
469 port = atoi( argv[i] );
470 } else if ( string(argv[i]).find("-pid") == 0 ) {
473 cout << "pidfn: " << pidfn << endl;
474 } else if ( (string)argv[i] == "-s" ) {
476 source_base = argv[i];
477 } else if ( (string)argv[i] == "-d" ) {
480 } else if ( (string)argv[i] == "-R" ) {
482 } else if ( (string)argv[i] == "-S" ) {
484 } else if ( (string)argv[i] == "-v" ) {
486 } else if ( (string)argv[i] == "-T" ) {
488 } else if ( (string)argv[i] == "-h" ) {
492 cerr << "Unrecognized verbiage '" << argv[i] << "'" << endl;
501 pidstream.open(pidfn);
502 if (!pidstream.good()) {
503 cerr << "Cannot open pid file '" << pidfn << "': ";
507 pidstream << getpid() << endl;
511 // Use the appropriate default for the "-s" flag
512 if (source_base == NULL) {
514 source_base = svn_base;
516 source_base = rsync_base;
519 // Must call this before any other net stuff
520 netInit( &argc,argv );
522 if ( ! theSocket.open( false ) ) { // open a UDP socket
523 printf("error opening socket\n");
527 if ( theSocket.bind( host, port ) == -1 ) {
528 printf("error binding to port %d\n", port);
536 int last_lat = nowhere;
537 int last_lon = nowhere;
538 bool recv_msg = false;
542 for ( synced_other = 'K'; synced_other <= 'Z'; synced_other++ ) {
544 snprintf( dir, 512, "Airports/%c", synced_other );
545 waitingTiles.push_back( dir );
547 for ( synced_other = 'A'; synced_other <= 'J'; synced_other++ ) {
549 snprintf( dir, 512, "Airports/%c", synced_other );
550 waitingTiles.push_back( dir );
553 waitingTiles.push_back( "Models" );
558 for (int* sigp=termination_triggering_signals; *sigp; sigp++) {
559 prior_signal_handlers[*sigp] =
560 signal(*sigp, *terminate_request_handler);
561 if (verbose) cout << "Intercepted signal " << *sigp << endl;
564 while ( !terminating ) {
568 // No FGFS communications
571 recv_msg = (lat != last_lat) || (lon != last_lon);
573 if (verbose && waitingTiles.empty()) {
574 cout << "Idle; waiting for FlightGear position\n";
576 theSocket.setBlocking(waitingTiles.empty());
577 len = theSocket.recv(msg, maxlen, 0);
581 if (verbose) cout << "recv length: " << len << endl;
582 parse_message( msg, &lat, &lon );
587 // Ignore messages where the location does not change
588 if ( lat != last_lat || lon != last_lon ) {
589 cout << "pos in msg = " << lat << "," << lon << endl;
590 deque<string> oldRequests;
591 oldRequests.swap( waitingTiles );
592 int lat_dir, lon_dir, dist;
593 if ( last_lat == nowhere || last_lon == nowhere ) {
594 lat_dir = lon_dir = 0;
596 dist = lat - last_lat;
598 lat_dir = dist / abs(dist);
602 dist = lon - last_lon;
604 lon_dir = dist / abs(dist);
609 cout << "lat = " << lat << " lon = " << lon << endl;
610 cout << "lat_dir = " << lat_dir << " "
611 << "lon_dir = " << lon_dir << endl;
612 sync_areas( lat, lon, lat_dir, lon_dir );
613 while ( !oldRequests.empty() ) {
614 waitingTiles.push_back( oldRequests.front() );
615 oldRequests.pop_front();
622 // No messages inbound, so process some pending work
623 else if ( !waitingTiles.empty() ) {
627 else if ( testing ) {
632 } // while !terminating