Examples with HttpClient org.opendatakit.httpclientandroidlib.client.HttpClient used on opensource projects

Example 6 with HttpClient

use of org.opendatakit.httpclientandroidlib.client.HttpClient in project collect by opendatakit.

the class DownloadFormListTask method doInBackground.

@Override
protected HashMap<String, FormDetails> doInBackground(Void... values) {
    SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(Collect.getInstance().getBaseContext());
    String downloadListUrl = settings.getString(PreferenceKeys.KEY_SERVER_URL, Collect.getInstance().getString(R.string.default_server_url));
    // NOTE: /formlist must not be translated! It is the well-known path on the server.
    String formListUrl = Collect.getInstance().getApplicationContext().getString(R.string.default_odk_formlist);
    String downloadPath = settings.getString(PreferenceKeys.KEY_FORMLIST_URL, formListUrl);
    downloadListUrl += downloadPath;
    Collect.getInstance().getActivityLogger().logAction(this, formListUrl, downloadListUrl);
    // We populate this with available forms from the specified server.
    // <formname, details>
    HashMap<String, FormDetails> formList = new HashMap<String, FormDetails>();
    // get shared HttpContext so that authentication and cookies are retained.
    HttpContext localContext = Collect.getInstance().getHttpContext();
    HttpClient httpclient = WebUtils.createHttpClient(WebUtils.CONNECTION_TIMEOUT);
    DocumentFetchResult result = WebUtils.getXmlDocument(downloadListUrl, localContext, httpclient);
    // If we can't get the document, return the error, cancel the task
    if (result.errorMessage != null) {
        if (result.responseCode == 401) {
            formList.put(DL_AUTH_REQUIRED, new FormDetails(result.errorMessage));
        } else {
            formList.put(DL_ERROR_MSG, new FormDetails(result.errorMessage));
        }
        return formList;
    }
    if (result.isOpenRosaResponse) {
        // Attempt OpenRosa 1.0 parsing
        Element xformsElement = result.doc.getRootElement();
        if (!xformsElement.getName().equals("xforms")) {
            String error = "root element is not <xforms> : " + xformsElement.getName();
            Timber.e("Parsing OpenRosa reply -- %s", error);
            formList.put(DL_ERROR_MSG, new FormDetails(Collect.getInstance().getString(R.string.parse_openrosa_formlist_failed, error)));
            return formList;
        }
        String namespace = xformsElement.getNamespace();
        if (!isXformsListNamespacedElement(xformsElement)) {
            String error = "root element namespace is incorrect:" + namespace;
            Timber.e("Parsing OpenRosa reply -- %s", error);
            formList.put(DL_ERROR_MSG, new FormDetails(Collect.getInstance().getString(R.string.parse_openrosa_formlist_failed, error)));
            return formList;
        }
        int elements = xformsElement.getChildCount();
        for (int i = 0; i < elements; ++i) {
            if (xformsElement.getType(i) != Element.ELEMENT) {
                // e.g., whitespace (text)
                continue;
            }
            Element xformElement = xformsElement.getElement(i);
            if (!isXformsListNamespacedElement(xformElement)) {
                // someone else's extension?
                continue;
            }
            String name = xformElement.getName();
            if (!name.equalsIgnoreCase("xform")) {
                // someone else's extension?
                continue;
            }
            // this is something we know how to interpret
            String formId = null;
            String formName = null;
            String version = null;
            String majorMinorVersion = null;
            String description = null;
            String downloadUrl = null;
            String manifestUrl = null;
            String hash = null;
            // don't process descriptionUrl
            int fieldCount = xformElement.getChildCount();
            for (int j = 0; j < fieldCount; ++j) {
                if (xformElement.getType(j) != Element.ELEMENT) {
                    // whitespace
                    continue;
                }
                Element child = xformElement.getElement(j);
                if (!isXformsListNamespacedElement(child)) {
                    // someone else's extension?
                    continue;
                }
                String tag = child.getName();
                switch(tag) {
                    case "formID":
                        formId = XFormParser.getXMLText(child, true);
                        if (formId != null && formId.length() == 0) {
                            formId = null;
                        }
                        break;
                    case "name":
                        formName = XFormParser.getXMLText(child, true);
                        if (formName != null && formName.length() == 0) {
                            formName = null;
                        }
                        break;
                    case "version":
                        version = XFormParser.getXMLText(child, true);
                        if (version != null && version.length() == 0) {
                            version = null;
                        }
                        break;
                    case "majorMinorVersion":
                        majorMinorVersion = XFormParser.getXMLText(child, true);
                        if (majorMinorVersion != null && majorMinorVersion.length() == 0) {
                            majorMinorVersion = null;
                        }
                        break;
                    case "descriptionText":
                        description = XFormParser.getXMLText(child, true);
                        if (description != null && description.length() == 0) {
                            description = null;
                        }
                        break;
                    case "downloadUrl":
                        downloadUrl = XFormParser.getXMLText(child, true);
                        if (downloadUrl != null && downloadUrl.length() == 0) {
                            downloadUrl = null;
                        }
                        break;
                    case "manifestUrl":
                        manifestUrl = XFormParser.getXMLText(child, true);
                        if (manifestUrl != null && manifestUrl.length() == 0) {
                            manifestUrl = null;
                        }
                        break;
                    case "hash":
                        hash = XFormParser.getXMLText(child, true);
                        if (hash != null && hash.length() == 0) {
                            hash = null;
                        }
                        break;
                }
            }
            if (formId == null || downloadUrl == null || formName == null) {
                String error = "Forms list entry " + Integer.toString(i) + " has missing or empty tags: formID, name, or downloadUrl";
                Timber.e("Parsing OpenRosa reply -- %s", error);
                formList.clear();
                formList.put(DL_ERROR_MSG, new FormDetails(Collect.getInstance().getString(R.string.parse_openrosa_formlist_failed, error)));
                return formList;
            }
            boolean isNewerFormVersionAvailable = false;
            boolean areNewerMediaFilesAvailable = false;
            if (isThisFormAlreadyDownloaded(formId)) {
                isNewerFormVersionAvailable = isNewerFormVersionAvailable(DownloadFormsTask.getMd5Hash(hash));
                if (!isNewerFormVersionAvailable && manifestUrl != null) {
                    List<MediaFile> newMediaFiles = downloadMediaFileList(manifestUrl);
                    if (newMediaFiles != null && newMediaFiles.size() > 0) {
                        areNewerMediaFilesAvailable = areNewerMediaFilesAvailable(formId, version, newMediaFiles);
                    }
                }
            }
            formList.put(formId, new FormDetails(formName, downloadUrl, manifestUrl, formId, (version != null) ? version : majorMinorVersion, isNewerFormVersionAvailable, areNewerMediaFilesAvailable));
        }
    } else {
        // Aggregate 0.9.x mode...
        // populate HashMap with form names and urls
        Element formsElement = result.doc.getRootElement();
        int formsCount = formsElement.getChildCount();
        String formId = null;
        for (int i = 0; i < formsCount; ++i) {
            if (formsElement.getType(i) != Element.ELEMENT) {
                // whitespace
                continue;
            }
            Element child = formsElement.getElement(i);
            String tag = child.getName();
            if (tag.equals("formID")) {
                formId = XFormParser.getXMLText(child, true);
                if (formId != null && formId.length() == 0) {
                    formId = null;
                }
            }
            if (tag.equalsIgnoreCase("form")) {
                String formName = XFormParser.getXMLText(child, true);
                if (formName != null && formName.length() == 0) {
                    formName = null;
                }
                String downloadUrl = child.getAttributeValue(null, "url");
                downloadUrl = downloadUrl.trim();
                if (downloadUrl != null && downloadUrl.length() == 0) {
                    downloadUrl = null;
                }
                if (downloadUrl == null || formName == null) {
                    String error = "Forms list entry " + Integer.toString(i) + " is missing form name or url attribute";
                    Timber.e("Parsing OpenRosa reply -- %s", error);
                    formList.clear();
                    formList.put(DL_ERROR_MSG, new FormDetails(Collect.getInstance().getString(R.string.parse_legacy_formlist_failed, error)));
                    return formList;
                }
                formList.put(formName, new FormDetails(formName, downloadUrl, null, formId, null, false, false));
                formId = null;
            }
        }
    }
    return formList;
}