epicyon/newsdaemon.py

__filename__ = "newsdaemon.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.2.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@libreserver.org"
__status__ = "Production"
__module_group__ = "Web Interface Columns"

# Example hashtag logic:
#
# if moderated and not #imcoxford then block
# if #pol and contains "westminster" then add #britpol
# if #unwantedtag then block

import os
import time
import datetime
import html
from shutil import rmtree
from subprocess import Popen
from collections import OrderedDict
from newswire import getDictFromNewswire
# from posts import sendSignedJson
from posts import createNewsPost
from posts import archivePostsForPerson
from content import validHashTag
from utils import get_base_content_from_post
from utils import remove_html
from utils import get_full_domain
from utils import load_json
from utils import save_json
from utils import get_status_number
from utils import clear_from_post_caches
from utils import dangerous_markup
from utils import local_actor_url
from inbox import storeHashTags
from session import createSession


def _updateFeedsOutboxIndex(base_dir: str, domain: str, post_id: str) -> None:
    """Updates the index used for imported RSS feeds
    """
    basePath = base_dir + '/accounts/news@' + domain
    indexFilename = basePath + '/outbox.index'

    if os.path.isfile(indexFilename):
        if post_id not in open(indexFilename).read():
            try:
                with open(indexFilename, 'r+') as feedsFile:
                    content = feedsFile.read()
                    if post_id + '\n' not in content:
                        feedsFile.seek(0, 0)
                        feedsFile.write(post_id + '\n' + content)
                        print('DEBUG: feeds post added to index')
            except Exception as ex:
                print('WARN: Failed to write entry to feeds posts index ' +
                      indexFilename + ' ' + str(ex))
    else:
        try:
            with open(indexFilename, 'w+') as feedsFile:
                feedsFile.write(post_id + '\n')
        except OSError:
            print('EX: unable to write ' + indexFilename)


def _saveArrivedTime(base_dir: str, post_filename: str, arrived: str) -> None:
    """Saves the time when an rss post arrived to a file
    """
    try:
        with open(post_filename + '.arrived', 'w+') as arrivedFile:
            arrivedFile.write(arrived)
    except OSError:
        print('EX: unable to write ' + post_filename + '.arrived')


def _removeControlCharacters(content: str) -> str:
    """Remove escaped html
    """
    if '&' in content:
        return html.unescape(content)
    return content


def _hashtagLogicalNot(tree: [], hashtags: [], moderated: bool,
                       content: str, url: str) -> bool:
    """ NOT
    """
    if len(tree) != 2:
        return False
    if isinstance(tree[1], str):
        return tree[1] not in hashtags
    elif isinstance(tree[1], list):
        return not hashtagRuleResolve(tree[1], hashtags,
                                      moderated, content, url)
    return False


def _hashtagLogicalContains(tree: [], hashtags: [], moderated: bool,
                            content: str, url: str) -> bool:
    """ Contains
    """
    if len(tree) != 2:
        return False
    matchStr = None
    if isinstance(tree[1], str):
        matchStr = tree[1]
    elif isinstance(tree[1], list):
        matchStr = tree[1][0]
    if matchStr:
        if matchStr.startswith('"') and matchStr.endswith('"'):
            matchStr = matchStr[1:]
            matchStr = matchStr[:len(matchStr) - 1]
        matchStrLower = matchStr.lower()
        contentWithoutTags = content.replace('#' + matchStrLower, '')
        return matchStrLower in contentWithoutTags
    return False


def _hashtagLogicalFrom(tree: [], hashtags: [], moderated: bool,
                        content: str, url: str) -> bool:
    """ FROM
    """
    if len(tree) != 2:
        return False
    matchStr = None
    if isinstance(tree[1], str):
        matchStr = tree[1]
    elif isinstance(tree[1], list):
        matchStr = tree[1][0]
    if matchStr:
        if matchStr.startswith('"') and matchStr.endswith('"'):
            matchStr = matchStr[1:]
            matchStr = matchStr[:len(matchStr) - 1]
        return matchStr.lower() in url
    return False


def _hashtagLogicalAnd(tree: [], hashtags: [], moderated: bool,
                       content: str, url: str) -> bool:
    """ AND
    """
    if len(tree) < 3:
        return False
    for argIndex in range(1, len(tree)):
        argValue = False
        if isinstance(tree[argIndex], str):
            argValue = (tree[argIndex] in hashtags)
        elif isinstance(tree[argIndex], list):
            argValue = hashtagRuleResolve(tree[argIndex],
                                          hashtags, moderated,
                                          content, url)
        if not argValue:
            return False
    return True


def _hashtagLogicalOr(tree: [], hashtags: [], moderated: bool,
                      content: str, url: str) -> bool:
    """ OR
    """
    if len(tree) < 3:
        return False
    for argIndex in range(1, len(tree)):
        argValue = False
        if isinstance(tree[argIndex], str):
            argValue = (tree[argIndex] in hashtags)
        elif isinstance(tree[argIndex], list):
            argValue = hashtagRuleResolve(tree[argIndex],
                                          hashtags, moderated,
                                          content, url)
        if argValue:
            return True
    return False


def _hashtagLogicalXor(tree: [], hashtags: [], moderated: bool,
                       content: str, url: str) -> bool:
    """ XOR
    """
    if len(tree) < 3:
        return False
    trueCtr = 0
    for argIndex in range(1, len(tree)):
        argValue = False
        if isinstance(tree[argIndex], str):
            argValue = (tree[argIndex] in hashtags)
        elif isinstance(tree[argIndex], list):
            argValue = hashtagRuleResolve(tree[argIndex],
                                          hashtags, moderated,
                                          content, url)
        if argValue:
            trueCtr += 1
    if trueCtr == 1:
        return True
    return False


def hashtagRuleResolve(tree: [], hashtags: [], moderated: bool,
                       content: str, url: str) -> bool:
    """Returns whether the tree for a hashtag rule evaluates to true or false
    """
    if not tree:
        return False

    if tree[0] == 'not':
        return _hashtagLogicalNot(tree, hashtags, moderated, content, url)
    elif tree[0] == 'contains':
        return _hashtagLogicalContains(tree, hashtags, moderated, content, url)
    elif tree[0] == 'from':
        return _hashtagLogicalFrom(tree, hashtags, moderated, content, url)
    elif tree[0] == 'and':
        return _hashtagLogicalAnd(tree, hashtags, moderated, content, url)
    elif tree[0] == 'or':
        return _hashtagLogicalOr(tree, hashtags, moderated, content, url)
    elif tree[0] == 'xor':
        return _hashtagLogicalXor(tree, hashtags, moderated, content, url)
    elif tree[0].startswith('#') and len(tree) == 1:
        return tree[0] in hashtags
    elif tree[0].startswith('moderated'):
        return moderated
    elif tree[0].startswith('"') and tree[0].endswith('"'):
        return True

    return False


def hashtagRuleTree(operators: [],
                    conditionsStr: str,
                    tagsInConditions: [],
                    moderated: bool) -> []:
    """Walks the tree
    """
    if not operators and conditionsStr:
        conditionsStr = conditionsStr.strip()
        isStr = conditionsStr.startswith('"') and conditionsStr.endswith('"')
        if conditionsStr.startswith('#') or isStr or \
           conditionsStr in operators or \
           conditionsStr == 'moderated' or \
           conditionsStr == 'contains':
            if conditionsStr.startswith('#'):
                if conditionsStr not in tagsInConditions:
                    if ' ' not in conditionsStr or \
                       conditionsStr.startswith('"'):
                        tagsInConditions.append(conditionsStr)
            return [conditionsStr.strip()]
        else:
            return None
    if not operators or not conditionsStr:
        return None
    tree = None
    conditionsStr = conditionsStr.strip()
    isStr = conditionsStr.startswith('"') and conditionsStr.endswith('"')
    if conditionsStr.startswith('#') or isStr or \
       conditionsStr in operators or \
       conditionsStr == 'moderated' or \
       conditionsStr == 'contains':
        if conditionsStr.startswith('#'):
            if conditionsStr not in tagsInConditions:
                if ' ' not in conditionsStr or \
                   conditionsStr.startswith('"'):
                    tagsInConditions.append(conditionsStr)
        tree = [conditionsStr.strip()]
    ctr = 0
    while ctr < len(operators):
        op = operators[ctr]
        opMatch = ' ' + op + ' '
        if opMatch not in conditionsStr and \
           not conditionsStr.startswith(op + ' '):
            ctr += 1
            continue
        else:
            tree = [op]
            if opMatch in conditionsStr:
                sections = conditionsStr.split(opMatch)
            else:
                sections = conditionsStr.split(op + ' ', 1)
            for subConditionStr in sections:
                result = hashtagRuleTree(operators[ctr + 1:],
                                         subConditionStr,
                                         tagsInConditions, moderated)
                if result:
                    tree.append(result)
            break
    return tree


def _hashtagAdd(base_dir: str, http_prefix: str, domain_full: str,
                post_json_object: {},
                actionStr: str, hashtags: [], system_language: str,
                translate: {}) -> None:
    """Adds a hashtag via a hashtag rule
    """
    addHashtag = actionStr.split('add ', 1)[1].strip()
    if not addHashtag.startswith('#'):
        return

    if addHashtag not in hashtags:
        hashtags.append(addHashtag)
    htId = addHashtag.replace('#', '')
    if not validHashTag(htId):
        return

    hashtagUrl = http_prefix + "://" + domain_full + "/tags/" + htId
    newTag = {
        'href': hashtagUrl,
        'name': addHashtag,
        'type': 'Hashtag'
    }
    # does the tag already exist?
    addTagObject = None
    for t in post_json_object['object']['tag']:
        if t.get('type') and t.get('name'):
            if t['type'] == 'Hashtag' and \
               t['name'] == addHashtag:
                addTagObject = t
                break
    # append the tag if it wasn't found
    if not addTagObject:
        post_json_object['object']['tag'].append(newTag)
    # add corresponding html to the post content
    hashtagHtml = \
        " <a href=\"" + hashtagUrl + "\" class=\"addedHashtag\" " + \
        "rel=\"tag\">#<span>" + htId + "</span></a>"
    content = get_base_content_from_post(post_json_object, system_language)
    if hashtagHtml in content:
        return

    if content.endswith('</p>'):
        content = \
            content[:len(content) - len('</p>')] + \
            hashtagHtml + '</p>'
    else:
        content += hashtagHtml
    post_json_object['object']['content'] = content
    domain = domain_full
    if ':' in domain:
        domain = domain.split(':')[0]
    storeHashTags(base_dir, 'news', domain,
                  http_prefix, domain_full,
                  post_json_object, translate)


def _hashtagRemove(http_prefix: str, domain_full: str, post_json_object: {},
                   actionStr: str, hashtags: [], system_language: str) -> None:
    """Removes a hashtag via a hashtag rule
    """
    rmHashtag = actionStr.split('remove ', 1)[1].strip()
    if not rmHashtag.startswith('#'):
        return

    if rmHashtag in hashtags:
        hashtags.remove(rmHashtag)
    htId = rmHashtag.replace('#', '')
    hashtagUrl = http_prefix + "://" + domain_full + "/tags/" + htId
    # remove tag html from the post content
    hashtagHtml = \
        "<a href=\"" + hashtagUrl + "\" class=\"addedHashtag\" " + \
        "rel=\"tag\">#<span>" + htId + "</span></a>"
    content = get_base_content_from_post(post_json_object, system_language)
    if hashtagHtml in content:
        content = content.replace(hashtagHtml, '').replace('  ', ' ')
        post_json_object['object']['content'] = content
        post_json_object['object']['contentMap'][system_language] = content
    rmTagObject = None
    for t in post_json_object['object']['tag']:
        if t.get('type') and t.get('name'):
            if t['type'] == 'Hashtag' and \
               t['name'] == rmHashtag:
                rmTagObject = t
                break
    if rmTagObject:
        post_json_object['object']['tag'].remove(rmTagObject)


def _newswireHashtagProcessing(session, base_dir: str, post_json_object: {},
                               hashtags: [], http_prefix: str,
                               domain: str, port: int,
                               person_cache: {},
                               cached_webfingers: {},
                               federation_list: [],
                               send_threads: [], postLog: [],
                               moderated: bool, url: str,
                               system_language: str,
                               translate: {}) -> bool:
    """Applies hashtag rules to a news post.
    Returns true if the post should be saved to the news timeline
    of this instance
    """
    rulesFilename = base_dir + '/accounts/hashtagrules.txt'
    if not os.path.isfile(rulesFilename):
        return True
    rules = []
    with open(rulesFilename, 'r') as f:
        rules = f.readlines()

    domain_full = get_full_domain(domain, port)

    # get the full text content of the post
    content = ''
    if post_json_object['object'].get('content'):
        content += get_base_content_from_post(post_json_object,
                                              system_language)
    if post_json_object['object'].get('summary'):
        content += ' ' + post_json_object['object']['summary']
    content = content.lower()

    # actionOccurred = False
    operators = ('not', 'and', 'or', 'xor', 'from', 'contains')
    for ruleStr in rules:
        if not ruleStr:
            continue
        if not ruleStr.startswith('if '):
            continue
        if ' then ' not in ruleStr:
            continue
        conditionsStr = ruleStr.split('if ', 1)[1]
        conditionsStr = conditionsStr.split(' then ')[0]
        tagsInConditions = []
        tree = hashtagRuleTree(operators, conditionsStr,
                               tagsInConditions, moderated)
        if not hashtagRuleResolve(tree, hashtags, moderated, content, url):
            continue
        # the condition matches, so do something
        actionStr = ruleStr.split(' then ')[1].strip()

        if actionStr.startswith('add '):
            # add a hashtag
            _hashtagAdd(base_dir, http_prefix, domain_full,
                        post_json_object, actionStr, hashtags, system_language,
                        translate)
        elif actionStr.startswith('remove '):
            # remove a hashtag
            _hashtagRemove(http_prefix, domain_full, post_json_object,
                           actionStr, hashtags, system_language)
        elif actionStr.startswith('block') or actionStr.startswith('drop'):
            # Block this item
            return False
    return True


def _createNewsMirror(base_dir: str, domain: str,
                      post_idNumber: str, url: str,
                      max_mirrored_articles: int) -> bool:
    """Creates a local mirror of a news article
    """
    if '|' in url or '>' in url:
        return True

    mirrorDir = base_dir + '/accounts/newsmirror'
    if not os.path.isdir(mirrorDir):
        os.mkdir(mirrorDir)

    # count the directories
    noOfDirs = 0
    for subdir, dirs, files in os.walk(mirrorDir):
        noOfDirs = len(dirs)

    mirrorIndexFilename = base_dir + '/accounts/newsmirror.txt'

    if max_mirrored_articles > 0 and noOfDirs > max_mirrored_articles:
        if not os.path.isfile(mirrorIndexFilename):
            # no index for mirrors found
            return True
        removals = []
        with open(mirrorIndexFilename, 'r') as indexFile:
            # remove the oldest directories
            ctr = 0
            while noOfDirs > max_mirrored_articles:
                ctr += 1
                if ctr > 5000:
                    # escape valve
                    break

                post_id = indexFile.readline()
                if not post_id:
                    continue
                post_id = post_id.strip()
                mirrorArticleDir = mirrorDir + '/' + post_id
                if os.path.isdir(mirrorArticleDir):
                    rmtree(mirrorArticleDir, ignore_errors=False, onerror=None)
                    removals.append(post_id)
                    noOfDirs -= 1

        # remove the corresponding index entries
        if removals:
            indexContent = ''
            with open(mirrorIndexFilename, 'r') as indexFile:
                indexContent = indexFile.read()
                for removePostId in removals:
                    indexContent = \
                        indexContent.replace(removePostId + '\n', '')
            try:
                with open(mirrorIndexFilename, 'w+') as indexFile:
                    indexFile.write(indexContent)
            except OSError:
                print('EX: unable to write ' + mirrorIndexFilename)

    mirrorArticleDir = mirrorDir + '/' + post_idNumber
    if os.path.isdir(mirrorArticleDir):
        # already mirrored
        return True

    # for onion instances mirror via tor
    prefixStr = ''
    if domain.endswith('.onion'):
        prefixStr = '/usr/bin/torsocks '

    # download the files
    commandStr = \
        prefixStr + '/usr/bin/wget -mkEpnp -e robots=off ' + url + \
        ' -P ' + mirrorArticleDir
    p = Popen(commandStr, shell=True)
    os.waitpid(p.pid, 0)

    if not os.path.isdir(mirrorArticleDir):
        print('WARN: failed to mirror ' + url)
        return True

    # append the post Id number to the index file
    if os.path.isfile(mirrorIndexFilename):
        try:
            with open(mirrorIndexFilename, 'a+') as indexFile:
                indexFile.write(post_idNumber + '\n')
        except OSError:
            print('EX: unable to append ' + mirrorIndexFilename)
    else:
        try:
            with open(mirrorIndexFilename, 'w+') as indexFile:
                indexFile.write(post_idNumber + '\n')
        except OSError:
            print('EX: unable to write ' + mirrorIndexFilename)

    return True


def _convertRSStoActivityPub(base_dir: str, http_prefix: str,
                             domain: str, port: int,
                             newswire: {},
                             translate: {},
                             recent_posts_cache: {}, max_recent_posts: int,
                             session, cached_webfingers: {},
                             person_cache: {},
                             federation_list: [],
                             send_threads: [], postLog: [],
                             max_mirrored_articles: int,
                             allow_local_network_access: bool,
                             system_language: str,
                             low_bandwidth: bool,
                             content_license_url: str) -> None:
    """Converts rss items in a newswire into posts
    """
    if not newswire:
        print('No newswire to convert')
        return

    basePath = base_dir + '/accounts/news@' + domain + '/outbox'
    if not os.path.isdir(basePath):
        os.mkdir(basePath)

    # oldest items first
    newswireReverse = OrderedDict(sorted(newswire.items(), reverse=False))

    for dateStr, item in newswireReverse.items():
        originalDateStr = dateStr
        # convert the date to the format used by ActivityPub
        if '+00:00' in dateStr:
            dateStr = dateStr.replace(' ', 'T')
            dateStr = dateStr.replace('+00:00', 'Z')
        else:
            try:
                dateStrWithOffset = \
                    datetime.datetime.strptime(dateStr, "%Y-%m-%d %H:%M:%S%z")
            except BaseException:
                print('EX: Newswire strptime failed ' + str(dateStr))
                continue
            try:
                dateStr = dateStrWithOffset.strftime("%Y-%m-%dT%H:%M:%SZ")
            except BaseException:
                print('EX: Newswire dateStrWithOffset failed ' +
                      str(dateStrWithOffset))
                continue

        statusNumber, published = get_status_number(dateStr)
        newPostId = \
            local_actor_url(http_prefix, 'news', domain) + \
            '/statuses/' + statusNumber

        # file where the post is stored
        filename = basePath + '/' + newPostId.replace('/', '#') + '.json'
        if os.path.isfile(filename):
            # don't create the post if it already exists
            # set the url
            # newswire[originalDateStr][1] = \
            #     '/users/news/statuses/' + statusNumber
            # set the filename
            newswire[originalDateStr][3] = filename
            continue

        rssTitle = _removeControlCharacters(item[0])
        url = item[1]
        if dangerous_markup(url, allow_local_network_access) or \
           dangerous_markup(rssTitle, allow_local_network_access):
            continue
        rssDescription = ''

        # get the rss description if it exists
        rssDescription = '<p>' + remove_html(item[4]) + '<p>'

        mirrored = item[7]
        postUrl = url
        if mirrored and '://' in url:
            postUrl = '/newsmirror/' + statusNumber + '/' + \
                url.split('://')[1]
            if postUrl.endswith('/'):
                postUrl += 'index.html'
            else:
                postUrl += '/index.html'

        # add the off-site link to the description
        rssDescription += \
            '<br><a href="' + postUrl + '">' + \
            translate['Read more...'] + '</a>'

        followersOnly = False
        # NOTE: the id when the post is created will not be
        # consistent (it's based on the current time, not the
        # published time), so we change that later
        saveToFile = False
        attachImageFilename = None
        mediaType = None
        imageDescription = None
        city = 'London, England'
        conversationId = None
        blog = createNewsPost(base_dir,
                              domain, port, http_prefix,
                              rssDescription,
                              followersOnly, saveToFile,
                              attachImageFilename, mediaType,
                              imageDescription, city,
                              rssTitle, system_language,
                              conversationId, low_bandwidth,
                              content_license_url)
        if not blog:
            continue

        if mirrored:
            if not _createNewsMirror(base_dir, domain, statusNumber,
                                     url, max_mirrored_articles):
                continue

        idStr = \
            local_actor_url(http_prefix, 'news', domain) + \
            '/statuses/' + statusNumber + '/replies'
        blog['news'] = True

        # note the time of arrival
        curr_time = datetime.datetime.utcnow()
        blog['object']['arrived'] = curr_time.strftime("%Y-%m-%dT%H:%M:%SZ")

        # change the id, based upon the published time
        blog['object']['replies']['id'] = idStr
        blog['object']['replies']['first']['partOf'] = idStr

        blog['id'] = newPostId + '/activity'
        blog['object']['id'] = newPostId
        blog['object']['atomUri'] = newPostId
        blog['object']['url'] = \
            http_prefix + '://' + domain + '/@news/' + statusNumber
        blog['object']['published'] = dateStr

        blog['object']['content'] = rssDescription
        blog['object']['contentMap'][system_language] = rssDescription

        domain_full = get_full_domain(domain, port)

        hashtags = item[6]

        post_id = newPostId.replace('/', '#')

        moderated = item[5]

        savePost = _newswireHashtagProcessing(session, base_dir,
                                              blog, hashtags,
                                              http_prefix, domain, port,
                                              person_cache, cached_webfingers,
                                              federation_list,
                                              send_threads, postLog,
                                              moderated, url, system_language,
                                              translate)

        # save the post and update the index
        if savePost:
            # ensure that all hashtags are stored in the json
            # and appended to the content
            blog['object']['tag'] = []
            for tagName in hashtags:
                htId = tagName.replace('#', '')
                hashtagUrl = \
                    http_prefix + "://" + domain_full + "/tags/" + htId
                newTag = {
                    'href': hashtagUrl,
                    'name': tagName,
                    'type': 'Hashtag'
                }
                blog['object']['tag'].append(newTag)
                hashtagHtml = \
                    " <a href=\"" + hashtagUrl + \
                    "\" class=\"addedHashtag\" " + \
                    "rel=\"tag\">#<span>" + \
                    htId + "</span></a>"
                content = get_base_content_from_post(blog, system_language)
                if hashtagHtml not in content:
                    if content.endswith('</p>'):
                        content = \
                            content[:len(content) - len('</p>')] + \
                            hashtagHtml + '</p>'
                    else:
                        content += hashtagHtml
                    blog['object']['content'] = content
                    blog['object']['contentMap'][system_language] = content

            # update the newswire tags if new ones have been found by
            # _newswireHashtagProcessing
            for tag in hashtags:
                if tag not in newswire[originalDateStr][6]:
                    newswire[originalDateStr][6].append(tag)

            storeHashTags(base_dir, 'news', domain,
                          http_prefix, domain_full,
                          blog, translate)

            clear_from_post_caches(base_dir, recent_posts_cache, post_id)
            if save_json(blog, filename):
                _updateFeedsOutboxIndex(base_dir, domain, post_id + '.json')

                # Save a file containing the time when the post arrived
                # this can then later be used to construct the news timeline
                # excluding items during the voting period
                if moderated:
                    _saveArrivedTime(base_dir, filename,
                                     blog['object']['arrived'])
                else:
                    if os.path.isfile(filename + '.arrived'):
                        try:
                            os.remove(filename + '.arrived')
                        except OSError:
                            print('EX: _convertRSStoActivityPub ' +
                                  'unable to delete ' + filename + '.arrived')

                # setting the url here links to the activitypub object
                # stored locally
                # newswire[originalDateStr][1] = \
                #     '/users/news/statuses/' + statusNumber

                # set the filename
                newswire[originalDateStr][3] = filename


def _mergeWithPreviousNewswire(oldNewswire: {}, newNewswire: {}) -> None:
    """Preserve any votes or generated activitypub post filename
    as rss feeds are updated
    """
    if not oldNewswire:
        return

    for published, fields in oldNewswire.items():
        if not newNewswire.get(published):
            continue
        for i in range(1, 5):
            newNewswire[published][i] = fields[i]


def runNewswireDaemon(base_dir: str, httpd,
                      http_prefix: str, domain: str, port: int,
                      translate: {}) -> None:
    """Periodically updates RSS feeds
    """
    newswireStateFilename = base_dir + '/accounts/.newswirestate.json'
    refreshFilename = base_dir + '/accounts/.refresh_newswire'

    # initial sleep to allow the system to start up
    time.sleep(50)
    while True:
        # has the session been created yet?
        if not httpd.session:
            print('Newswire daemon waiting for session')
            httpd.session = createSession(httpd.proxy_type)
            if not httpd.session:
                print('Newswire daemon has no session')
                time.sleep(60)
                continue
            else:
                print('Newswire daemon session established')

        # try to update the feeds
        print('Updating newswire feeds')
        newNewswire = \
            getDictFromNewswire(httpd.session, base_dir, domain,
                                httpd.max_newswire_postsPerSource,
                                httpd.max_newswire_feed_size_kb,
                                httpd.maxTags,
                                httpd.max_feed_item_size_kb,
                                httpd.max_newswire_posts,
                                httpd.maxCategoriesFeedItemSizeKb,
                                httpd.system_language,
                                httpd.debug)

        if not httpd.newswire:
            print('Newswire feeds not updated')
            if os.path.isfile(newswireStateFilename):
                print('Loading newswire from file')
                httpd.newswire = load_json(newswireStateFilename)

        print('Merging with previous newswire')
        _mergeWithPreviousNewswire(httpd.newswire, newNewswire)

        httpd.newswire = newNewswire
        if newNewswire:
            save_json(httpd.newswire, newswireStateFilename)
            print('Newswire updated')
        else:
            print('No new newswire')

        print('Converting newswire to activitypub format')
        _convertRSStoActivityPub(base_dir,
                                 http_prefix, domain, port,
                                 newNewswire, translate,
                                 httpd.recent_posts_cache,
                                 httpd.max_recent_posts,
                                 httpd.session,
                                 httpd.cached_webfingers,
                                 httpd.person_cache,
                                 httpd.federation_list,
                                 httpd.send_threads,
                                 httpd.postLog,
                                 httpd.max_mirrored_articles,
                                 httpd.allow_local_network_access,
                                 httpd.system_language,
                                 httpd.low_bandwidth,
                                 httpd.content_license_url)
        print('Newswire feed converted to ActivityPub')

        if httpd.max_news_posts > 0:
            archive_dir = base_dir + '/archive'
            archiveSubdir = \
                archive_dir + '/accounts/news@' + domain + '/outbox'
            print('Archiving news posts')
            archivePostsForPerson(http_prefix, 'news',
                                  domain, base_dir, 'outbox',
                                  archiveSubdir,
                                  httpd.recent_posts_cache,
                                  httpd.max_news_posts)

        # wait a while before the next feeds update
        for tick in range(120):
            time.sleep(10)
            # if a new blog post has been created then stop
            # waiting and recalculate the newswire
            if os.path.isfile(refreshFilename):
                try:
                    os.remove(refreshFilename)
                except OSError:
                    print('EX: runNewswireDaemon unable to delete ' +
                          str(refreshFilename))
                break


def runNewswireWatchdog(project_version: str, httpd) -> None:
    """This tries to keep the newswire update thread running even if it dies
    """
    print('Starting newswire watchdog')
    newswireOriginal = \
        httpd.thrPostSchedule.clone(runNewswireDaemon)
    httpd.thrNewswireDaemon.start()
    while True:
        time.sleep(50)
        if httpd.thrNewswireDaemon.is_alive():
            continue
        httpd.thrNewswireDaemon.kill()
        httpd.thrNewswireDaemon = \
            newswireOriginal.clone(runNewswireDaemon)
        httpd.thrNewswireDaemon.start()
        print('Restarting newswire daemon...')