dark_web_forums/Forums/OnniForums/parser.py

__author__ = 'DarkWeb'

# Here, we are importing the auxiliary functions to clean or convert data
from typing import List
from Forums.Utilities.utilities import *
from datetime import date
from datetime import timedelta
import re
import string

# Here, we are importing BeautifulSoup to search through the HTML tree
from bs4 import BeautifulSoup

# This is the method to parse the Description Pages (one page to each topic in the Listing Pages)

def onniForums_description_parser(soup: BeautifulSoup):
    
    topicName: str = "-1"    # 0 *topic name
    users       : List[str] = []  # 1 *all users of each post
    statuses    : List[str] = []  # 2 all user's authority in each post such as (adm, member, dangerous)
    reputations : List[int] = []  # 3 all user's karma in each post (usually found as a number)
    interests   : List[str] = []  # 4 all user's interest in each post
    signs       : List[str] = []  # 5 all user's signature in each post (usually a standard message after the content of the post)
    posts       : List[int] = []  # 6 all messages of each post
    feedbacks   : List[str] = []  # 7 all feedbacks of each vendor (this was found in just one Forum and with a number format)
    addDates    : List[str] = []  # 8 all dates of each post
    
    # Getting the topicName
    topicName = soup.find("table", {"class": "tborder tfixed clear"}) \
                    .find("td", {"class": "thead"}) \
                    .find_all("div")[-1].text
    
    topics_array = soup.find_all("div", {"class": "post"})
    
    
    for topic in topics_array:
        # Extracting and cleaning author information
        author_information: BeautifulSoup = topic.find("div", {"class": "author_information"})
        
        username: str = author_information.find("span", {"class": "largetext"}).text 
        users.append(username)
        
        user_status: str = author_information.find("span", {"class": "smalltext"}).text
        
        
        # Banned users often have weird text issues in HTML
        # So we detect banned users and give them a unique string
        if user_status.find("Banned") > 0: user_status_cleaned = "Banned"

        elif user_status.find("Unregistered") > 0: user_status_cleaned = "Unregistered"
        
        else: user_status_cleaned = user_status[1:len(user_status)-2]  # Remove excessive spaces in string
        
        # Add cleaned data into array
        statuses.append(user_status_cleaned)
        
        if user_status_cleaned in ['Unregistered', 'Banned']: reputations.append(-1)
        else:
            author_statistics: BeautifulSoup = topic.find("div", {"class": "author_statistics"})
            
            reputation: str = author_statistics.find_all("div", {"class": "float_right"})[-1].text
            reputations.append(int(reputation))
        
        # Append a "-1" to `interests` and `signs` array since they don't exist on this forum
        interests.append("-1")
        signs.append("-1")
        
        post_content: str = topic.find("div", {"class": "post_body scaleimages"}).text
        # Clean post content of excessive spaces and characters
        post_content_cleaned = post_content.replace("[You must reply to view this hidden content]", "")
        post_content_cleaned = post_content_cleaned[1:len(post_content_cleaned)-1]
        posts.append(post_content_cleaned)
        
        # Append a "-1" to `feedbacks` array since they don't exists on this forum
        feedbacks.append("-1")
        
        
        date_posted: str = topic.find("span", {"class": "post_date"}).text
        date_posted_cleaned = date_posted.split(",")[0]
        addDates.append(date_posted_cleaned)
        
    
    # TESTING PURPOSES - DO NOT REMOVE
    
    # Populate the final variable (this should be a list with all fields scraped)

    row = (topicName, posts, users, addDates, feedbacks, statuses, reputations, signs, interests)

    # Sending the results

    return row
    


def onniForums_listing_parser(soup: BeautifulSoup):
    
    boardName = "-1"       # board name (the previous level of the topic in the Forum categorization tree.
                       # For instance: Security/Malware/Tools to hack Facebook. The board here should be Malware)

    nm = 0             # this variable should receive the number of topics
    topic   : List[str] = []         # all topics
    user    : List[str] = []          # all users of each topic
    post    : List[int] = []         # number of posts of each topic
    view    : List[int] = []          # number of views of each topic
    addDate : List[str] = []       # when the topic was created (difficult to find)
    href    : List[str] = []          # this variable should receive all cleaned urls (we will use this to do the merge between
                       # Listing and Description pages)

    # Finding the board (should be just one)
    board_metadata: BeautifulSoup = soup.find("table",{"class" : "tborder clear"})
    
    boardName = board_metadata.find_all("div")[1].text
    
    thread_arrays = board_metadata.find_all("tr", {"class":"inline_row"}) # gets the information of posts
    
    nm = len(thread_arrays)
    
    for thread in thread_arrays: #getting the information from the posts and sorting them into the arrays defined above
        
        try: 
            post_subject = thread.find("span",{"class": "subject_new"}).text #getting the topic
            
        except AttributeError:
            post_subject = thread.find("span",{"class": "subject_old"}).text
            
        topic.append(post_subject)
        
        
        reply_count = thread.find_all("td", {"align": "center"})[2].text
        post.append(reply_count)
        
        views = thread.find_all("td", {"align": "center"})[3].text
        view.append(views)
        
        dates_added: str = thread.find("span",{"class" : "thread_start_datetime smalltext"}).text
        dates_added_cleaned = dates_added.split(',')[0]
        addDate.append(dates_added_cleaned)
        
        author = thread.find("span",{"class" : "author smalltext"}).text
        user.append(author)
        
        reply_anchor = thread.find_all("td", {"align": "center"})[2].find('a')
        thread_link = reply_anchor.get('href')
        href.append(thread_link)
        
    return organizeTopics(
        forum="OnniForums",
        nm=nm,
        board=boardName,
        author=user,
        topic=topic,
        views=view,
        posts=post,
        href=href,
        addDate=addDate
    ) 
        
    
        
        
    

# This is the method to parse the Listing Pages (one page with many posts)

def onniForums_links_parser(soup: BeautifulSoup):
    
    href = []
    listing = soup.find_all('tr', {'class': 'inline_row'})
    
    for thread in listing:
        try:
            link = thread.find('span', {"class": "subject_old"}).find('a').get('href')
        except:
            link = thread.find('span', {"class": "subject_new"}).find('a').get('href')

        href.append(link)
    
    return href