int OGRGPSBabelDataSource::Open( const char * pszDatasourceName, const char* pszGPSBabelDriverNameIn, char** papszOpenOptionsIn ) { if (!STARTS_WITH_CI(pszDatasourceName, "GPSBABEL:")) { CPLAssert(pszGPSBabelDriverNameIn); pszGPSBabelDriverName = CPLStrdup(pszGPSBabelDriverNameIn); pszFilename = CPLStrdup(pszDatasourceName); } else { if( CSLFetchNameValue(papszOpenOptionsIn, "FILENAME") ) pszFilename = CPLStrdup(CSLFetchNameValue(papszOpenOptionsIn, "FILENAME")); if( CSLFetchNameValue(papszOpenOptionsIn, "GPSBABEL_DRIVER") ) { if( pszFilename == NULL ) { CPLError(CE_Failure, CPLE_AppDefined, "Missing FILENAME"); return FALSE; } pszGPSBabelDriverName = CPLStrdup(CSLFetchNameValue(papszOpenOptionsIn, "DRIVER")); /* A bit of validation to avoid command line injection */ if (!IsValidDriverName(pszGPSBabelDriverName)) return FALSE; } } pszName = CPLStrdup( pszDatasourceName ); bool bExplicitFeatures = false; bool bWaypoints = true; bool bTracks = true; bool bRoutes = true; if (pszGPSBabelDriverName == NULL) { const char* pszSep = strchr(pszDatasourceName + 9, ':'); if (pszSep == NULL) { CPLError( CE_Failure, CPLE_AppDefined, "Wrong syntax. Expected GPSBabel:driver_name:file_name"); return FALSE; } pszGPSBabelDriverName = CPLStrdup(pszDatasourceName + 9); *(strchr(pszGPSBabelDriverName, ':')) = '\0'; /* A bit of validation to avoid command line injection */ if (!IsValidDriverName(pszGPSBabelDriverName)) return FALSE; /* Parse optional features= option */ if (STARTS_WITH_CI(pszSep+1, "features=")) { const char* pszNextSep = strchr(pszSep+1, ':'); if (pszNextSep == NULL) { CPLError(CE_Failure, CPLE_AppDefined, "Wrong syntax. Expected " "GPSBabel:driver_name[,options]*:[" "features=waypoints,tracks,routes:]file_name"); return FALSE; } char* pszFeatures = CPLStrdup(pszSep+1+9); *strchr(pszFeatures, ':') = 0; char** papszTokens = CSLTokenizeString(pszFeatures); char** papszIter = papszTokens; bool bErr = false; bExplicitFeatures = true; bWaypoints = false; bTracks = false; bRoutes = false; while(papszIter && *papszIter) { if (EQUAL(*papszIter, "waypoints")) bWaypoints = true; else if (EQUAL(*papszIter, "tracks")) bTracks = true; else if (EQUAL(*papszIter, "routes")) bRoutes = true; else { CPLError( CE_Failure, CPLE_AppDefined, "Wrong value for 'features' options"); bErr = true; } papszIter++; } CSLDestroy(papszTokens); CPLFree(pszFeatures); if (bErr) return FALSE; pszSep = pszNextSep; } if( pszFilename == NULL ) pszFilename = CPLStrdup(pszSep+1); } const char* pszOptionUseTempFile = CPLGetConfigOption("USE_TEMPFILE", NULL); if (pszOptionUseTempFile && CPLTestBool(pszOptionUseTempFile)) osTmpFileName = CPLGenerateTempFilename(NULL); else osTmpFileName.Printf("/vsimem/ogrgpsbabeldatasource_%p", this); bool bRet = false; if (IsSpecialFile(pszFilename)) { /* Special file : don't try to open it */ char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes, bTracks, pszGPSBabelDriverName, pszFilename); VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb"); bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0); VSIFCloseL(tmpfp); tmpfp = NULL; CSLDestroy(argv); argv = NULL; } else { VSILFILE* fp = VSIFOpenL(pszFilename, "rb"); if (fp == NULL) { CPLError(CE_Failure, CPLE_AppDefined, "Cannot open file %s", pszFilename); return FALSE; } char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes, bTracks, pszGPSBabelDriverName, "-"); VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb"); CPLPushErrorHandler(CPLQuietErrorHandler); bRet = (CPLSpawn(argv, fp, tmpfp, TRUE) == 0); CPLPopErrorHandler(); CSLDestroy(argv); argv = NULL; CPLErr nLastErrorType = CPLGetLastErrorType(); CPLErrorNum nLastErrorNo = CPLGetLastErrorNo(); CPLString osLastErrorMsg = CPLGetLastErrorMsg(); VSIFCloseL(tmpfp); tmpfp = NULL; VSIFCloseL(fp); fp = NULL; if (!bRet) { if ( strstr(osLastErrorMsg.c_str(), "This format cannot be used in piped commands") == NULL) { CPLError( nLastErrorType, nLastErrorNo, "%s", osLastErrorMsg.c_str()); } else { VSIStatBuf sStatBuf; if (VSIStat(pszFilename, &sStatBuf) != 0) { CPLError( CE_Failure, CPLE_NotSupported, "Driver %s only supports real (non virtual) " "files", pszGPSBabelDriverName ); return FALSE; } /* Try without piping in */ argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes, bTracks, pszGPSBabelDriverName, pszFilename); tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb"); bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0); VSIFCloseL(tmpfp); tmpfp = NULL; CSLDestroy(argv); argv = NULL; } } } if (bRet) { poGPXDS = static_cast<GDALDataset *>( GDALOpenEx( osTmpFileName.c_str(), GDAL_OF_VECTOR, NULL, NULL, NULL ) ); if (poGPXDS) { if (bWaypoints) { OGRLayer* poLayer = poGPXDS->GetLayerByName("waypoints"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; } if (bRoutes) { OGRLayer* poLayer = poGPXDS->GetLayerByName("routes"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; poLayer = poGPXDS->GetLayerByName("route_points"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; } if (bTracks) { OGRLayer* poLayer = poGPXDS->GetLayerByName("tracks"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; poLayer = poGPXDS->GetLayerByName("track_points"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; } } } return nLayers > 0; }
int OGRGPSBabelDataSource::Open( const char * pszDatasourceName, int bUpdateIn) { int bExplicitFeatures = FALSE; int bWaypoints = TRUE, bTracks = TRUE, bRoutes = TRUE; if (bUpdateIn) { CPLError(CE_Failure, CPLE_NotSupported, "OGR/GPSBabel driver does not support opening a file in update mode"); return FALSE; } if (!EQUALN(pszDatasourceName, "GPSBABEL:", 9)) { VSILFILE* fp = VSIFOpenL(pszDatasourceName, "rb"); if (fp == NULL) return FALSE; char szHeader[1024 + 1]; memset(szHeader, 0, 1024+1); VSIFReadL(szHeader, 1, 1024, fp); if (memcmp(szHeader, "MsRcd", 5) == 0) pszGPSBabelDriverName = CPLStrdup("mapsource"); else if (memcmp(szHeader, "MsRcf", 5) == 0) pszGPSBabelDriverName = CPLStrdup("gdb"); else if (strstr(szHeader, "<osm") != NULL) pszGPSBabelDriverName = CPLStrdup("osm"); else if (strstr(szHeader, "$GPGSA") != NULL || strstr(szHeader, "$GPGGA") != NULL) pszGPSBabelDriverName = CPLStrdup("nmea"); else if (EQUALN(szHeader, "OziExplorer",11)) pszGPSBabelDriverName = CPLStrdup("ozi"); else if (strstr(szHeader, "Grid") && strstr(szHeader, "Datum") && strstr(szHeader, "Header")) pszGPSBabelDriverName = CPLStrdup("garmin_txt"); else if (szHeader[0] == 13 && szHeader[10] == 'M' && szHeader[11] == 'S' && (szHeader[12] >= '0' && szHeader[12] <= '9') && (szHeader[13] >= '0' && szHeader[13] <= '9') && szHeader[12] * 10 + szHeader[13] >= 30 && (szHeader[14] == 1 || szHeader[14] == 2) && szHeader[15] == 0 && szHeader[16] == 0 && szHeader[17] == 0) pszGPSBabelDriverName = CPLStrdup("mapsend"); else if (strstr(szHeader, "$PMGNWPL") != NULL || strstr(szHeader, "$PMGNRTE") != NULL) pszGPSBabelDriverName = CPLStrdup("magellan"); VSIFCloseL(fp); if (pszGPSBabelDriverName == NULL) { return FALSE; } pszFilename = CPLStrdup(pszDatasourceName); } pszName = CPLStrdup( pszDatasourceName ); if (pszGPSBabelDriverName == NULL) { const char* pszSep = strchr(pszDatasourceName + 9, ':'); if (pszSep == NULL) { CPLError(CE_Failure, CPLE_AppDefined, "Wrong syntax. Expected GPSBabel:driver_name:file_name"); return FALSE; } pszGPSBabelDriverName = CPLStrdup(pszDatasourceName + 9); *(strchr(pszGPSBabelDriverName, ':')) = '\0'; /* A bit of validation to avoid command line injection */ if (!IsValidDriverName(pszGPSBabelDriverName)) return FALSE; /* Parse optionnal features= option */ if (EQUALN(pszSep+1, "features=", 9)) { const char* pszNextSep = strchr(pszSep+1, ':'); if (pszNextSep == NULL) { CPLError(CE_Failure, CPLE_AppDefined, "Wrong syntax. Expected GPSBabel:driver_name[,options]*:[features=waypoints,tracks,routes:]file_name"); return FALSE; } char* pszFeatures = CPLStrdup(pszSep+1+9); *strchr(pszFeatures, ':') = 0; char** papszTokens = CSLTokenizeString(pszFeatures); char** papszIter = papszTokens; int bErr = FALSE; bExplicitFeatures = TRUE; bWaypoints = bTracks = bRoutes = FALSE; while(papszIter && *papszIter) { if (EQUAL(*papszIter, "waypoints")) bWaypoints = TRUE; else if (EQUAL(*papszIter, "tracks")) bTracks = TRUE; else if (EQUAL(*papszIter, "routes")) bRoutes = TRUE; else { CPLError(CE_Failure, CPLE_AppDefined, "Wrong value for 'features' options"); bErr = TRUE; } papszIter ++; } CSLDestroy(papszTokens); CPLFree(pszFeatures); if (bErr) return FALSE; pszSep = pszNextSep; } pszFilename = CPLStrdup(pszSep+1); } const char* pszOptionUseTempFile = CPLGetConfigOption("USE_TEMPFILE", NULL); if (pszOptionUseTempFile && CSLTestBoolean(pszOptionUseTempFile)) osTmpFileName = CPLGenerateTempFilename(NULL); else osTmpFileName.Printf("/vsimem/ogrgpsbabeldatasource_%p", this); int bRet = FALSE; if (IsSpecialFile(pszFilename)) { /* Special file : don't try to open it */ char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes, bTracks, pszGPSBabelDriverName, pszFilename); VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb"); bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0); VSIFCloseL(tmpfp); tmpfp = NULL; CSLDestroy(argv); argv = NULL; } else { VSILFILE* fp = VSIFOpenL(pszFilename, "rb"); if (fp == NULL) { CPLError(CE_Failure, CPLE_AppDefined, "Cannot open file %s", pszFilename); return FALSE; } char** argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes, bTracks, pszGPSBabelDriverName, "-"); VSILFILE* tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb"); CPLPushErrorHandler(CPLQuietErrorHandler); bRet = (CPLSpawn(argv, fp, tmpfp, TRUE) == 0); CPLPopErrorHandler(); CSLDestroy(argv); argv = NULL; CPLErr nLastErrorType = CPLGetLastErrorType(); int nLastErrorNo = CPLGetLastErrorNo(); CPLString osLastErrorMsg = CPLGetLastErrorMsg(); VSIFCloseL(tmpfp); tmpfp = NULL; VSIFCloseL(fp); fp = NULL; if (!bRet) { if (strstr(osLastErrorMsg.c_str(), "This format cannot be used in piped commands") == NULL) { CPLError(nLastErrorType, nLastErrorNo, "%s", osLastErrorMsg.c_str()); } else { VSIStatBuf sStatBuf; if (VSIStat(pszFilename, &sStatBuf) != 0) { CPLError(CE_Failure, CPLE_NotSupported, "Driver %s only supports real (non virtual) files", pszGPSBabelDriverName); return FALSE; } /* Try without piping in */ argv = GetArgv(bExplicitFeatures, bWaypoints, bRoutes, bTracks, pszGPSBabelDriverName, pszFilename); tmpfp = VSIFOpenL(osTmpFileName.c_str(), "wb"); bRet = (CPLSpawn(argv, NULL, tmpfp, TRUE) == 0); VSIFCloseL(tmpfp); tmpfp = NULL; CSLDestroy(argv); argv = NULL; } } } if (bRet) { poGPXDS = OGRSFDriverRegistrar::Open(osTmpFileName.c_str()); if (poGPXDS) { OGRLayer* poLayer; if (bWaypoints) { poLayer = poGPXDS->GetLayerByName("waypoints"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; } if (bRoutes) { poLayer = poGPXDS->GetLayerByName("routes"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; poLayer = poGPXDS->GetLayerByName("route_points"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; } if (bTracks) { poLayer = poGPXDS->GetLayerByName("tracks"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; poLayer = poGPXDS->GetLayerByName("track_points"); if (poLayer != NULL && poLayer->GetFeatureCount() != 0) apoLayers[nLayers++] = poLayer; } } } return nLayers > 0; }