コード例 #1
0
ファイル: wmsdriver.cpp プロジェクト: imincik/pkg-gdal
GDALDataset *GDALWMSDataset::Open(GDALOpenInfo *poOpenInfo)
{
    CPLXMLNode *config = NULL;
    CPLErr ret = CE_None;

    const char* pszFilename = poOpenInfo->pszFilename;
    const char* pabyHeader = (const char *) poOpenInfo->pabyHeader;

    if (poOpenInfo->nHeaderBytes == 0 &&
        EQUALN(pszFilename, "<GDAL_WMS>", 10))
    {
        config = CPLParseXMLString(pszFilename);
    }
    else if (poOpenInfo->nHeaderBytes >= 10 &&
             EQUALN(pabyHeader, "<GDAL_WMS>", 10))
    {
        config = CPLParseXMLFile(pszFilename);
    }
    else if (poOpenInfo->nHeaderBytes == 0 &&
             (EQUALN(pszFilename, "WMS:http", 8) ||
              EQUALN(pszFilename, "http", 4)) &&
             strstr(pszFilename, "/MapServer?f=json") != NULL)
    {
        if (EQUALN(pszFilename, "WMS:http", 8))
            pszFilename += 4;
        CPLString osURL(pszFilename);
        if (strstr(pszFilename, "&pretty=true") == NULL)
            osURL += "&pretty=true";
        CPLHTTPResult *psResult = CPLHTTPFetch(osURL.c_str(), NULL);
        if (psResult == NULL)
            return NULL;
        if (psResult->pabyData == NULL)
        {
            CPLHTTPDestroyResult(psResult);
            return NULL;
        }
        config = GDALWMSDatasetGetConfigFromArcGISJSON(osURL,
                                                       (const char*)psResult->pabyData);
        CPLHTTPDestroyResult(psResult);
    }

    else if (poOpenInfo->nHeaderBytes == 0 &&
             (EQUALN(pszFilename, "WMS:", 4) ||
              CPLString(pszFilename).ifind("SERVICE=WMS") != std::string::npos))
    {
        CPLString osLayers = CPLURLGetValue(pszFilename, "LAYERS");
        CPLString osRequest = CPLURLGetValue(pszFilename, "REQUEST");
        if (osLayers.size() != 0)
            config = GDALWMSDatasetGetConfigFromURL(poOpenInfo);
        else if (EQUAL(osRequest, "GetTileService"))
            return GDALWMSMetaDataset::DownloadGetTileService(poOpenInfo);
        else
            return GDALWMSMetaDataset::DownloadGetCapabilities(poOpenInfo);
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             (strstr(pabyHeader, "<WMT_MS_Capabilities") != NULL ||
              strstr(pabyHeader, "<WMS_Capabilities") != NULL ||
              strstr(pabyHeader, "<!DOCTYPE WMT_MS_Capabilities") != NULL))
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        GDALDataset* poRet = GDALWMSMetaDataset::AnalyzeGetCapabilities(psXML);
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<WMS_Tile_Service") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        GDALDataset* poRet = GDALWMSMetaDataset::AnalyzeGetTileService(psXML);
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<TileMap version=\"1.0.0\"") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        config = GDALWMSDatasetGetConfigFromTileMap(psXML);
        CPLDestroyXMLNode( psXML );
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<Services") != NULL &&
             strstr(pabyHeader, "<TileMapService version=\"1.0") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        CPLXMLNode* psRoot = CPLGetXMLNode( psXML, "=Services" );
        GDALDataset* poRet = NULL;
        if (psRoot)
        {
            CPLXMLNode* psTileMapService = CPLGetXMLNode(psRoot, "TileMapService");
            if (psTileMapService)
            {
                const char* pszHref = CPLGetXMLValue(psTileMapService, "href", NULL);
                if (pszHref)
                {
                    poRet = (GDALDataset*) GDALOpen(pszHref, GA_ReadOnly);
                }
            }
        }
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<TileMapService version=\"1.0.0\"") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        GDALDataset* poRet = GDALWMSMetaDataset::AnalyzeTileMapService(psXML);
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else
        return NULL;
    if (config == NULL) return NULL;

/* -------------------------------------------------------------------- */
/*      Confirm the requested access is supported.                      */
/* -------------------------------------------------------------------- */
    if( poOpenInfo->eAccess == GA_Update )
    {
        CPLDestroyXMLNode(config);
        CPLError( CE_Failure, CPLE_NotSupported, 
                  "The WMS driver does not support update access to existing"
                  " datasets.\n" );
        return NULL;
    }

    GDALWMSDataset *ds = new GDALWMSDataset();
    ret = ds->Initialize(config);
    if (ret != CE_None) {
        delete ds;
        ds = NULL;
    }
    CPLDestroyXMLNode(config);

/* -------------------------------------------------------------------- */
/*      Initialize any PAM information.                                 */
/* -------------------------------------------------------------------- */
    if (ds != NULL)
    {
        ds->SetMetadataItem( "INTERLEAVE", "PIXEL", "IMAGE_STRUCTURE" );
        ds->SetDescription( poOpenInfo->pszFilename );
        ds->TryLoadXML();
    }

    return ds;
}
コード例 #2
0
ファイル: wmsdriver.cpp プロジェクト: garnertb/gdal
GDALDataset *GDALWMSDataset::Open(GDALOpenInfo *poOpenInfo)
{
    CPLXMLNode *config = NULL;
    CPLErr ret = CE_None;

    const char* pszFilename = poOpenInfo->pszFilename;
    const char* pabyHeader = (const char *) poOpenInfo->pabyHeader;

    if (poOpenInfo->nHeaderBytes == 0 &&
        EQUALN(pszFilename, "<GDAL_WMS>", 10))
    {
        config = CPLParseXMLString(pszFilename);
    }
    else if (poOpenInfo->nHeaderBytes >= 10 &&
             EQUALN(pabyHeader, "<GDAL_WMS>", 10))
    {
        config = CPLParseXMLFile(pszFilename);
    }
    else if (poOpenInfo->nHeaderBytes == 0 &&
             (EQUALN(pszFilename, "WMS:http", 8) ||
              EQUALN(pszFilename, "http", 4)) &&
             strstr(pszFilename, "/MapServer?f=json") != NULL)
    {
        if (EQUALN(pszFilename, "WMS:http", 8))
            pszFilename += 4;
        CPLString osURL(pszFilename);
        if (strstr(pszFilename, "&pretty=true") == NULL)
            osURL += "&pretty=true";
        CPLHTTPResult *psResult = CPLHTTPFetch(osURL.c_str(), NULL);
        if (psResult == NULL)
            return NULL;
        if (psResult->pabyData == NULL)
        {
            CPLHTTPDestroyResult(psResult);
            return NULL;
        }
        config = GDALWMSDatasetGetConfigFromArcGISJSON(osURL,
                                                       (const char*)psResult->pabyData);
        CPLHTTPDestroyResult(psResult);
    }

    else if (poOpenInfo->nHeaderBytes == 0 &&
             (EQUALN(pszFilename, "WMS:", 4) ||
              CPLString(pszFilename).ifind("SERVICE=WMS") != std::string::npos))
    {
        CPLString osLayers = CPLURLGetValue(pszFilename, "LAYERS");
        CPLString osRequest = CPLURLGetValue(pszFilename, "REQUEST");
        if (osLayers.size() != 0)
            config = GDALWMSDatasetGetConfigFromURL(poOpenInfo);
        else if (EQUAL(osRequest, "GetTileService"))
            return GDALWMSMetaDataset::DownloadGetTileService(poOpenInfo);
        else
            return GDALWMSMetaDataset::DownloadGetCapabilities(poOpenInfo);
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             (strstr(pabyHeader, "<WMT_MS_Capabilities") != NULL ||
              strstr(pabyHeader, "<WMS_Capabilities") != NULL ||
              strstr(pabyHeader, "<!DOCTYPE WMT_MS_Capabilities") != NULL))
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        GDALDataset* poRet = GDALWMSMetaDataset::AnalyzeGetCapabilities(psXML);
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<WMS_Tile_Service") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        GDALDataset* poRet = GDALWMSMetaDataset::AnalyzeGetTileService(psXML);
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<TileMap version=\"1.0.0\"") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        config = GDALWMSDatasetGetConfigFromTileMap(psXML);
        CPLDestroyXMLNode( psXML );
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<Services") != NULL &&
             strstr(pabyHeader, "<TileMapService version=\"1.0") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        CPLXMLNode* psRoot = CPLGetXMLNode( psXML, "=Services" );
        GDALDataset* poRet = NULL;
        if (psRoot)
        {
            CPLXMLNode* psTileMapService = CPLGetXMLNode(psRoot, "TileMapService");
            if (psTileMapService)
            {
                const char* pszHref = CPLGetXMLValue(psTileMapService, "href", NULL);
                if (pszHref)
                {
                    poRet = (GDALDataset*) GDALOpen(pszHref, GA_ReadOnly);
                }
            }
        }
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes != 0 &&
             strstr(pabyHeader, "<TileMapService version=\"1.0.0\"") != NULL)
    {
        CPLXMLNode* psXML = CPLParseXMLFile(pszFilename);
        if (psXML == NULL)
            return NULL;
        GDALDataset* poRet = GDALWMSMetaDataset::AnalyzeTileMapService(psXML);
        CPLDestroyXMLNode( psXML );
        return poRet;
    }
    else if (poOpenInfo->nHeaderBytes == 0 &&
              EQUALN(pszFilename, "AGS:", 4))
    {
		return NULL;
    }
    else if (poOpenInfo->nHeaderBytes == 0 &&
              EQUALN(pszFilename, "IIP:", 4))
    {
        CPLString osURL(pszFilename + 4);
        osURL += "&obj=Basic-Info";
        CPLHTTPResult *psResult = CPLHTTPFetch(osURL.c_str(), NULL);
        if (psResult == NULL)
            return NULL;
        if (psResult->pabyData == NULL)
        {
            CPLHTTPDestroyResult(psResult);
            return NULL;
        }
        int nXSize, nYSize;
        const char* pszMaxSize = strstr((const char*)psResult->pabyData, "Max-size:");
        const char* pszResolutionNumber = strstr((const char*)psResult->pabyData, "Resolution-number:");
        if( pszMaxSize &&
            sscanf(pszMaxSize + strlen("Max-size:"), "%d %d", &nXSize, &nYSize) == 2 &&
            pszResolutionNumber )
        {
            int nResolutions = atoi(pszResolutionNumber + strlen("Resolution-number:"));
            char* pszEscapedURL = CPLEscapeString(pszFilename + 4, -1, CPLES_XML);
            CPLString osXML = CPLSPrintf(
            "<GDAL_WMS>"
            "    <Service name=\"IIP\">"
            "        <ServerUrl>%s</ServerUrl>"
            "    </Service>"
            "    <DataWindow>"
            "        <SizeX>%d</SizeX>"
            "        <SizeY>%d</SizeY>"
            "        <TileLevel>%d</TileLevel>"
            "    </DataWindow>"
            "    <BlockSizeX>256</BlockSizeX>"
            "    <BlockSizeY>256</BlockSizeY>"
            "    <BandsCount>3</BandsCount>"
            "    <Cache />"
            "</GDAL_WMS>",
                pszEscapedURL,
                nXSize, nYSize, nResolutions - 1);
            config = CPLParseXMLString(osXML);
            CPLFree(pszEscapedURL);
        }
        CPLHTTPDestroyResult(psResult);
    }
    else
        return NULL;
    if (config == NULL) return NULL;

/* -------------------------------------------------------------------- */
/*      Confirm the requested access is supported.                      */
/* -------------------------------------------------------------------- */
    if( poOpenInfo->eAccess == GA_Update )
    {
        CPLDestroyXMLNode(config);
        CPLError( CE_Failure, CPLE_NotSupported, 
                  "The WMS poDriver does not support update access to existing"
                  " datasets.\n" );
        return NULL;
    }

    GDALWMSDataset *ds = new GDALWMSDataset();
    ret = ds->Initialize(config);
    if (ret != CE_None) {
        delete ds;
        ds = NULL;
    }
    CPLDestroyXMLNode(config);

/* -------------------------------------------------------------------- */
/*      Initialize any PAM information.                                 */
/* -------------------------------------------------------------------- */
    if (ds != NULL)
    {
        ds->SetMetadataItem( "INTERLEAVE", "PIXEL", "IMAGE_STRUCTURE" );
        ds->SetDescription( poOpenInfo->pszFilename );
        ds->TryLoadXML();
    }

    return ds;
}