--- /dev/null
+// terrasync.cxx -- "JIT" scenery fetcher
+//
+// Written by Curtis Olson, started November 2002.
+//
+// Copyright (C) 2002 Curtis L. Olson - http://www.flightgear.org/~curt
+// Copyright (C) 2008 Alexander R. Perry <alex.perry@ieee.org>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+//
+// $Id$
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef HAVE_WINDOWS_H
+#include <windows.h>
+#endif
+
+#ifdef __MINGW32__
+#include <time.h>
+#include <unistd.h>
+#elif defined(_MSC_VER)
+# include <io.h>
+# ifndef HAVE_SVN_CLIENT_H
+# include <time.h>
+# include <process.h>
+# endif
+#endif
+
+#include <stdlib.h> // atoi() atof() abs() system()
+#include <signal.h> // signal()
+
+#include <simgear/compiler.h>
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <deque>
+#include <map>
+
+#include <simgear/io/raw_socket.hxx>
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/misc/sg_path.hxx>
+
+#ifdef HAVE_SVN_CLIENT_H
+# ifdef HAVE_LIBSVN_CLIENT_1
+# include <svn_auth.h>
+# include <svn_client.h>
+# include <svn_cmdline.h>
+# include <svn_pools.h>
+# else
+# undef HAVE_SVN_CLIENT_H
+# endif
+#endif
+
+using namespace std;
+
+const char* source_base = NULL;
+const char* svn_base =
+ "http://terrascenery.googlecode.com/svn/trunk/data/Scenery";
+const char* rsync_base = "scenery.flightgear.org::Scenery";
+const char* dest_base = "terrasyncdir";
+const char* rsync_cmd =
+ "rsync --verbose --archive --delete --perms --owner --group";
+
+#ifdef HAVE_SVN_CLIENT_H
+bool use_svn = true;
+#else
+bool use_svn = false;
+const char* svn_cmd = "svn checkout";
+#endif
+
+// display usage
+static void usage( const string& prog ) {
+ cout <<
+"Usage: terrasync [options]\n"
+"Options: \n"
+" -d <dest> destination directory [required]\n"
+" -R transport using pipe to rsync\n"
+" -S transport using built-in svn\n"
+" -p <port> listen on UDP port [default: 5501]\n"
+" -s <source> source base [default: '']\n"
+" -pid <pidfile> write PID to file\n"
+" -v be more verbose\n"
+;
+
+#ifdef HAVE_SVN_CLIENT_H
+ cout << " (defaults to the built in subversion)" << endl;
+#else
+ cout << " (defaults to rsync, using external commands)" << endl;
+#endif
+
+ cout << "\nExample:\n"
+"pid=$(cat $pidfile 2>/dev/null)\n"
+"if test -n \"$pid\" && kill -0 $pid ; then\n"
+" echo \"terrasync already running: $pid\"\n"
+"else\n"
+" nice /games/sport/fgs/utils/TerraSync/terrasync \\\n"
+" -v -pid $pidfile -S -p 5500 -d /games/orig/terrasync &\n"
+"fi" << endl;
+
+}
+
+deque<string> waitingTiles;
+typedef map<string,time_t> CompletedTiles;
+CompletedTiles completedTiles;
+simgear::Socket theSocket;
+
+#ifdef HAVE_SVN_CLIENT_H
+
+// Things we need for doing subversion checkout - often
+apr_pool_t *mysvn_pool = NULL;
+svn_client_ctx_t *mysvn_ctx = NULL;
+svn_opt_revision_t *mysvn_rev = NULL;
+svn_opt_revision_t *mysvn_rev_peg = NULL;
+
+static const svn_version_checklist_t mysvn_checklist[] = {
+ { "svn_subr", svn_subr_version },
+ { "svn_client", svn_client_version },
+ { NULL, NULL }
+};
+
+// Configure our subversion session
+int mysvn_setup(void) {
+ // Are we already prepared?
+ if (mysvn_pool) return EXIT_SUCCESS;
+ // No, so initialize svn internals generally
+#ifdef _MSC_VER
+ // there is a segfault when providing an error stream.
+ // Apparently, calling setvbuf with a nul buffer is
+ // not supported under msvc 7.1 ( code inside svn_cmdline_init )
+ if (svn_cmdline_init("terrasync", 0) != EXIT_SUCCESS)
+ return EXIT_FAILURE;
+#else
+ if (svn_cmdline_init("terrasync", stderr) != EXIT_SUCCESS)
+ return EXIT_FAILURE;
+#endif
+ apr_pool_t *pool;
+ apr_pool_create(&pool, NULL);
+ svn_error_t *err = NULL;
+ SVN_VERSION_DEFINE(mysvn_version);
+ err = svn_ver_check_list(&mysvn_version, mysvn_checklist);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ err = svn_ra_initialize(pool);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ char *config_dir = NULL;
+ err = svn_config_ensure(config_dir, pool);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ err = svn_client_create_context(&mysvn_ctx, pool);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ err = svn_config_get_config(&(mysvn_ctx->config),
+ config_dir, pool);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ svn_config_t *cfg;
+ cfg = ( svn_config_t*) apr_hash_get(
+ mysvn_ctx->config,
+ SVN_CONFIG_CATEGORY_CONFIG,
+ APR_HASH_KEY_STRING);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ svn_auth_baton_t *ab;
+ err = svn_cmdline_setup_auth_baton(&ab,
+ TRUE, NULL, NULL, config_dir, TRUE, cfg,
+ mysvn_ctx->cancel_func, mysvn_ctx->cancel_baton, pool);
+ if (err)
+ return svn_cmdline_handle_exit_error(err, pool, "terrasync: ");
+ mysvn_ctx->auth_baton = ab;
+#if (SVN_VER_MINOR >= 5)
+ mysvn_ctx->conflict_func = NULL;
+ mysvn_ctx->conflict_baton = NULL;
+#endif
+ // Now our magic revisions
+ mysvn_rev = (svn_opt_revision_t*) apr_palloc(pool,
+ sizeof(svn_opt_revision_t));
+ if (!mysvn_rev)
+ return EXIT_FAILURE;
+ mysvn_rev_peg = (svn_opt_revision_t*) apr_palloc(pool,
+ sizeof(svn_opt_revision_t));
+ if (!mysvn_rev_peg)
+ return EXIT_FAILURE;
+ mysvn_rev->kind = svn_opt_revision_head;
+ mysvn_rev_peg->kind = svn_opt_revision_unspecified;
+ // Success if we got this far
+ mysvn_pool = pool;
+ return EXIT_SUCCESS;
+}
+
+#endif
+
+// sync one directory tree
+void sync_tree(const char* dir) {
+ int rc;
+ char command[512];
+ SGPath path( dest_base );
+
+ path.append( dir );
+ rc = path.create_dir( 0755 );
+ if (rc) {
+ cout << "Return code = " << rc << endl;
+ exit(1);
+ }
+
+ if (use_svn) {
+#ifdef HAVE_SVN_CLIENT_H
+ cout << dir << " ... ";
+ cout.flush();
+ char dest_base_dir[512];
+ snprintf( command, 512,
+ "%s/%s", source_base, dir);
+ snprintf( dest_base_dir, 512,
+ "%s/%s", dest_base, dir);
+ svn_error_t *err = NULL;
+ if (mysvn_setup() != EXIT_SUCCESS)
+ exit(1);
+ apr_pool_t *subpool = svn_pool_create(mysvn_pool);
+
+#if (SVN_VER_MINOR >= 5)
+ err = svn_client_checkout3(NULL,
+ command,
+ dest_base_dir,
+ mysvn_rev_peg,
+ mysvn_rev,
+ svn_depth_infinity,
+ 0, // ignore-externals = false
+ 0, // allow unver obstructions = false
+ mysvn_ctx,
+ subpool);
+#else
+ // version 1.4 API
+ err = svn_client_checkout2(NULL,
+ command,
+ dest_base_dir,
+ mysvn_rev_peg,
+ mysvn_rev,
+ 1, // recurse=true - same as svn_depth_infinity for checkout3 above
+ 0, // ignore externals = false
+ mysvn_ctx,
+ subpool);
+#endif
+
+ if (err) {
+ // Report errors from the checkout attempt
+ cout << "failed: " << endl
+ << err->message << endl;
+ svn_error_clear(err);
+ return;
+ } else {
+ cout << "done" << endl;
+ }
+ svn_pool_destroy(subpool);
+ return;
+#else
+
+ snprintf( command, 512,
+ "%s %s/%s %s/%s", svn_cmd,
+ source_base, dir,
+ dest_base, dir );
+#endif
+ } else {
+ snprintf( command, 512,
+ "%s %s/%s/ %s/%s/", rsync_cmd,
+ source_base, dir,
+ dest_base, dir );
+ }
+ cout << command << endl;
+ rc = system( command );
+ if (rc) {
+ cout << "Return code = " << rc << endl;
+ if (rc == 5120) exit(1);
+ }
+}
+
+#if defined(_MSC_VER) || defined(__MINGW32__)
+typedef void (__cdecl * sighandler_t)(int);
+#elif defined( __APPLE__ ) || defined (__FreeBSD__)
+typedef sig_t sighandler_t;
+#endif
+
+bool terminating = false;
+sighandler_t prior_signal_handlers[32];
+int termination_triggering_signals[] = {
+#if defined(_MSC_VER) || defined(__MINGW32__)
+ SIGINT, SIGILL, SIGFPE, SIGSEGV, SIGTERM, SIGBREAK, SIGABRT,
+#else
+ SIGHUP, SIGINT, SIGQUIT, SIGKILL, SIGTERM,
+#endif
+ 0}; // zero terminated
+
+void terminate_request_handler(int param) {
+ char msg[] = "\nReceived signal XX, intend to exit soon.\n"
+ "repeat the signal to force immediate termination.\n";
+ msg[17] = '0' + param / 10;
+ msg[18] = '0' + param % 10;
+ write(1, msg, sizeof(msg) - 1);
+ terminating = true;
+ signal(param, prior_signal_handlers[param]);
+ theSocket.close();
+}
+
+
+const int nowhere = -9999;
+
+
+// parse message
+static void parse_message( const string &msg, int *lat, int *lon ) {
+ double dlat, dlon;
+ string text = msg;
+
+ // find GGA string and advance to start of lat
+ string::size_type pos = text.find( "$GPGGA" );
+ if ( pos == string::npos )
+ {
+ *lat = nowhere;
+ *lon = nowhere;
+ return;
+ }
+ string tmp = text.substr( pos + 7 );
+ pos = tmp.find( "," );
+ tmp = tmp.substr( pos + 1 );
+ // cout << "-> " << tmp << endl;
+
+ // find lat then advance to start of hemisphere
+ pos = tmp.find( "," );
+ string lats = tmp.substr( 0, pos );
+ dlat = atof( lats.c_str() ) / 100.0;
+ tmp = tmp.substr( pos + 1 );
+
+ // find N/S hemisphere and advance to start of lon
+ if ( tmp.substr( 0, 1 ) == "S" ) {
+ dlat = -dlat;
+ }
+ pos = tmp.find( "," );
+ tmp = tmp.substr( pos + 1 );
+
+ // find lon
+ pos = tmp.find( "," );
+ string lons = tmp.substr( 0, pos );
+ dlon = atof( lons.c_str() ) / 100.0;
+ tmp = tmp.substr( pos + 1 );
+
+ // find E/W hemisphere and advance to start of lon
+ if ( tmp.substr( 0, 1 ) == "W" ) {
+ dlon = -dlon;
+ }
+
+ if ( dlat < 0 ) {
+ *lat = (int)dlat - 1;
+ } else {
+ *lat = (int)dlat;
+ }
+
+ if ( dlon < 0 ) {
+ *lon = (int)dlon - 1;
+ } else {
+ *lon = (int)dlon;
+ }
+
+ if ((dlon == 0) && (dlat == 0)) {
+ *lon = nowhere;
+ *lat = nowhere;
+ }
+}
+
+
+// sync area
+static void sync_area( int lat, int lon ) {
+ if ( lat < -90 || lat > 90 || lon < -180 || lon > 180 )
+ return;
+ char NS, EW;
+ int baselat, baselon;
+
+ if ( lat < 0 ) {
+ int base = (int)(lat / 10);
+ if ( lat == base * 10 ) {
+ baselat = base * 10;
+ } else {
+ baselat = (base - 1) * 10;
+ }
+ NS = 's';
+ } else {
+ baselat = (int)(lat / 10) * 10;
+ NS = 'n';
+ }
+ if ( lon < 0 ) {
+ int base = (int)(lon / 10);
+ if ( lon == base * 10 ) {
+ baselon = base * 10;
+ } else {
+ baselon = (base - 1) * 10;
+ }
+ EW = 'w';
+ } else {
+ baselon = (int)(lon / 10) * 10;
+ EW = 'e';
+ }
+
+ const char* terrainobjects[3] = { "Terrain", "Objects", 0 };
+
+ for (const char** tree = &terrainobjects[0]; *tree; tree++) {
+ char dir[512];
+ snprintf( dir, 512, "%s/%c%03d%c%02d/%c%03d%c%02d",
+ *tree,
+ EW, abs(baselon), NS, abs(baselat),
+ EW, abs(lon), NS, abs(lat) );
+ waitingTiles.push_back( dir );
+ }
+}
+
+
+// sync areas
+static void sync_areas( int lat, int lon, int lat_dir, int lon_dir ) {
+ // do current 1x1 degree area first
+ sync_area( lat, lon );
+
+ if ( lat_dir == 0 && lon_dir == 0 ) {
+ // now do surrounding 8 1x1 degree areas.
+ for ( int i = lat - 1; i <= lat + 1; ++i ) {
+ for ( int j = lon - 1; j <= lon + 1; ++j ) {
+ if ( i != lat || j != lon ) {
+ sync_area( i, j );
+ }
+ }
+ }
+ } else {
+ if ( lat_dir != 0 ) {
+ sync_area( lat + lat_dir, lon );
+ sync_area( lat + lat_dir, lon - 1 );
+ sync_area( lat + lat_dir, lon + 1 );
+ }
+ if ( lon_dir != 0 ) {
+ sync_area( lat, lon + lon_dir );
+ sync_area( lat - 1, lon + lon_dir );
+ sync_area( lat + 1, lon + lon_dir );
+ }
+ }
+}
+
+void getWaitingTile() {
+ while ( !waitingTiles.empty() ) {
+ CompletedTiles::iterator ii =
+ completedTiles.find( waitingTiles.front() );
+ time_t now = time(0);
+ if ( ii == completedTiles.end() || ii->second + 600 < now ) {
+ sync_tree(waitingTiles.front().c_str());
+ completedTiles[ waitingTiles.front() ] = now;
+ waitingTiles.pop_front();
+ break;
+ }
+ waitingTiles.pop_front();
+ }
+}
+
+int main( int argc, char **argv ) {
+ int port = 5501;
+ char host[256] = "localhost";
+ bool testing = false;
+ bool do_checkout(true);
+ int verbose(0);
+ const char* pidfn = "";
+
+ // parse arguments
+ int i = 1;
+ while ( i < argc ) {
+ if ( (string)argv[i] == "-p" ) {
+ ++i;
+ port = atoi( argv[i] );
+ } else if ( string(argv[i]).find("-pid") == 0 ) {
+ ++i;
+ pidfn = argv[i];
+ cout << "pidfn: " << pidfn << endl;
+ } else if ( (string)argv[i] == "-s" ) {
+ ++i;
+ source_base = argv[i];
+ } else if ( (string)argv[i] == "-d" ) {
+ ++i;
+ dest_base = argv[i];
+ } else if ( (string)argv[i] == "-R" ) {
+ use_svn = false;
+ } else if ( (string)argv[i] == "-S" ) {
+ use_svn = true;
+ } else if ( (string)argv[i] == "-v" ) {
+ verbose++;
+ } else if ( (string)argv[i] == "-T" ) {
+ testing = true;
+ } else if ( (string)argv[i] == "-h" ) {
+ usage( argv[0] );
+ exit(0);
+ } else {
+ cerr << "Unrecognized verbiage '" << argv[i] << "'" << endl;
+ usage( argv[0] );
+ exit(-1);
+ }
+ ++i;
+ }
+
+ if (*pidfn) {
+ ofstream pidstream;
+ pidstream.open(pidfn);
+ if (!pidstream.good()) {
+ cerr << "Cannot open pid file '" << pidfn << "': ";
+ perror(0);
+ exit(2);
+ }
+ pidstream << getpid() << endl;
+ pidstream.close();
+ }
+
+ // Use the appropriate default for the "-s" flag
+ if (source_base == NULL) {
+ if (use_svn)
+ source_base = svn_base;
+ else
+ source_base = rsync_base;
+ }
+
+ // Must call this before any other net stuff
+ simgear::Socket::initSockets();
+
+ if ( ! theSocket.open( false ) ) { // open a UDP socket
+ printf("error opening socket\n");
+ return -1;
+ }
+
+ if ( theSocket.bind( host, port ) == -1 ) {
+ printf("error binding to port %d\n", port);
+ return -1;
+ }
+
+ char msg[256];
+ int maxlen = 256;
+ int len;
+ int lat, lon;
+ int last_lat = nowhere;
+ int last_lon = nowhere;
+ bool recv_msg = false;
+
+ char synced_other;
+ if (do_checkout) {
+ for ( synced_other = 'K'; synced_other <= 'Z'; synced_other++ ) {
+ char dir[512];
+ snprintf( dir, 512, "Airports/%c", synced_other );
+ waitingTiles.push_back( dir );
+ }
+ for ( synced_other = 'A'; synced_other <= 'J'; synced_other++ ) {
+ char dir[512];
+ snprintf( dir, 512, "Airports/%c", synced_other );
+ waitingTiles.push_back( dir );
+ }
+ if ( use_svn ) {
+ waitingTiles.push_back( "Models" );
+ }
+ }
+
+
+ for (int* sigp=termination_triggering_signals; *sigp; sigp++) {
+ prior_signal_handlers[*sigp] =
+ signal(*sigp, *terminate_request_handler);
+ if (verbose) cout << "Intercepted signal " << *sigp << endl;
+ }
+
+ while ( !terminating ) {
+ // main loop
+ recv_msg = false;
+ if ( testing ) {
+ // No FGFS communications
+ lat = 37;
+ lon = -123;
+ recv_msg = (lat != last_lat) || (lon != last_lon);
+ } else {
+ if (verbose && waitingTiles.empty()) {
+ cout << "Idle; waiting for FlightGear position\n";
+ }
+ theSocket.setBlocking(waitingTiles.empty());
+ len = theSocket.recv(msg, maxlen, 0);
+ if (len >= 0) {
+ msg[len] = '\0';
+ recv_msg = true;
+ if (verbose) cout << "recv length: " << len << endl;
+ parse_message( msg, &lat, &lon );
+ }
+ }
+
+ if ( recv_msg ) {
+ // Ignore messages where the location does not change
+ if ( lat != last_lat || lon != last_lon ) {
+ cout << "pos in msg = " << lat << "," << lon << endl;
+ deque<string> oldRequests;
+ oldRequests.swap( waitingTiles );
+ int lat_dir, lon_dir, dist;
+ if ( last_lat == nowhere || last_lon == nowhere ) {
+ lat_dir = lon_dir = 0;
+ } else {
+ dist = lat - last_lat;
+ if ( dist != 0 ) {
+ lat_dir = dist / abs(dist);
+ } else {
+ lat_dir = 0;
+ }
+ dist = lon - last_lon;
+ if ( dist != 0 ) {
+ lon_dir = dist / abs(dist);
+ } else {
+ lon_dir = 0;
+ }
+ }
+ cout << "lat = " << lat << " lon = " << lon << endl;
+ cout << "lat_dir = " << lat_dir << " "
+ << "lon_dir = " << lon_dir << endl;
+ sync_areas( lat, lon, lat_dir, lon_dir );
+ while ( !oldRequests.empty() ) {
+ waitingTiles.push_back( oldRequests.front() );
+ oldRequests.pop_front();
+ }
+ last_lat = lat;
+ last_lon = lon;
+ }
+ }
+
+ // No messages inbound, so process some pending work
+ else if ( !waitingTiles.empty() ) {
+ getWaitingTile();
+ }
+
+ else if ( testing ) {
+ terminating = true;
+ } else
+
+ #ifdef _WIN32
+ Sleep(1000);
+#else
+ sleep(1);
+#endif
+ } // while !terminating
+
+ return 0;
+}
projects / simgear.git / commitdiff