dark_web_forums/Forums/Initialization/prepare_parser.py

__author__ = 'DarkWeb'

import codecs
import glob
import os
import shutil
from Forums.DB_Connection.db_connection import *
from Forums.BestCardingWorld.parser import *
from Forums.CryptBB.parser import *

from Forums.Classifier.classify_product import predict
#from DarkWebMining_Sample.Forums.Classifier.classify_product import predict_semi


# determines if forum is russian, not really used now but maybe later
def isRussianForum(forum):

    with open('russian_forums.txt') as f:
        forums = f.readlines()

    result = False
    for iforum in forums:

        iforum = iforum.replace('\n','')
        if iforum == forum:
           result = True
           break

    return result


#tries to match description pages to listing pages by using a key made for every description page and every link in  listing page
#once verified and matched, the info is merged into a 'rec', which is returned
#@param: detPage is a list of keys of valid pages, rec is the row of data of an instance
#return: rec, row of data, that may have additional data added on after matching description to listing page
def mergePages(rmm, rec):

    # key = u"Top:" + rec[1].upper().strip() + u" User:" + rec[5].upper().strip()
    # key = rec[16]

    print ("----------------- Matched: " + rec[1] + "--------------------")
    rec[8] = rmm[1]
    rec[9] = rmm[2]
    rec[10] = rmm[3]
    rec[11] = rmm[4]
    rec[12] = rmm[5]
    rec[13] = rmm[6]
    rec[14] = rmm[7]
    rec[15] = rmm[8]

    return rec


#gets a string of posts and joins them together into one string to be put in the database as one string of text
#@param: list of strings (the posts of a thread)
#return: string containing the concatenation of all the strings
def getPosts(posts):

    strPosts = ' '.join(posts)
    return strPosts.strip()


#uses db connection , another program, methods to persists values to the correct categories
#@param: row is the list of entries for this instance, cur is the db connection object
def persist_data(row, cur):

    user = create_user(cur, row[5])

    forum = create_forum(cur, row)

    board = create_board(cur, row, forum)

    topic = create_topic(cur, row, forum, board, user)

    create_posts(cur, row, forum, board, topic)


#main method for this program, what actually gets the parsed info from the parser, and persists them into the db
#calls the different parser methods here depending on the type of html page
def new_parse(forum, createLog):

    print("Parsing The " + forum + " Forum and conduct data classification to store the information in the database.")

    crawlerDate = date.today()

    ini = time.time()

    global site

    # Connecting to the database
    con = connectDataBase()
    cur = con.cursor()

    # Creating the tables (The database should be created manually)
    create_database(cur, con)

    nError = 0

    lines = [] #lines.clear()
    lns = []   #lns.clear()
    detPage = {}
    rw = []

    # Creating the log file for each Forum
    if createLog:
        if not os.path.exists("./" + forum + "/Logs/" + forum + "_" + str("%02d" %crawlerDate.month) + str("%02d" %crawlerDate.day) + str("%04d" %crawlerDate.year) + ".log"):
            logFile = open("./" + forum + "/Logs/" + forum + "_" + str("%02d" %crawlerDate.today().month) + str("%02d" %crawlerDate.day) + str("%04d" %crawlerDate.year) + ".log", "w")
        else:
            print("Files of the date " + str("%02d" %crawlerDate.today().month) + str("%02d" %crawlerDate.today().day) + str("%04d" %crawlerDate.today().year) +
                   " from the Forum " + forum + " were already read. Delete the referent information in the Data Base and also delete the log file "
                   "in the _Logs folder to read files from this Forum of this date again.")
            raise SystemExit

    # Reading the Listing Html Pages
    for fileListing in glob.glob(os.path.join (os.getcwd().replace("Initialization","") + forum + "\\HTML_Pages\\" + str("%02d" %crawlerDate.month) + str("%02d" %crawlerDate.day) + str("%04d" %crawlerDate.year) + "\\Listing" ,'*.html')):
        lines.append(fileListing)

    # Reading the Description Html Pages
    for fileDescription in glob.glob(os.path.join (os.getcwd().replace("Initialization","") + forum + "\\HTML_Pages\\" + str("%02d" %crawlerDate.month) + str("%02d" %crawlerDate.day) + str("%04d" %crawlerDate.year) + "\\Description" ,'*.html')):
        lns.append(fileDescription)

    # Parsing the Description Pages and put the tag's content into a dictionary (Hash table)
    for index, line2 in enumerate(lns):

        print("Reading description folder of '" + forum + "', file '" + os.path.basename(line2) + "', index= " + str(index + 1) + " ... " + str(len(lns)))

        try:
            html = codecs.open(line2.strip('\n'), encoding='utf8')
            soup = BeautifulSoup(html, "html.parser")
            html.close()
        except:

            try:
                html = open(line2.strip('\n'))
                soup = BeautifulSoup(html, "html.parser")
                html.close()
            except:

                nError += 1
                print("There was a problem to read the file " + line2 + " in the Description section!")
                if createLog:
                    logFile.write(str(nError) + ". There was a problem to read the file " + line2 + " in the Description section!\n")
                continue

        try:

            if forum == "BestCardingWorld":
                rmm = bestcardingworld_description_parser(soup)
            elif forum == "CryptBB":
                rmm = cryptBB_description_parser(soup)

            # key = u"Top:" + rmm[0].upper().strip() + u" User:" + rmm[2][0].upper().strip()
            key = u"Url:" + os.path.basename(line2).replace(".html", "")

            # save file address with description record in memory
            detPage[key] = {'rmm': rmm, 'filename': os.path.basename(line2)}

        except:

            nError += 1
            print("There was a problem to parse the file " + line2 + " in the Description section!")
            if createLog:
                logFile.write(str(nError) + ". There was a problem to parse the file " + line2 + " in the Description section.\n")

    # Parsing the Listing Pages and put the tag's content into a list
    for index, line1 in enumerate(lines):

        print("Reading listing folder of '" + forum + "', file '" + os.path.basename(line1) + "', index= " + str(index + 1) + " ... " + str(len(lines)))

        readError = False
        try:
            html = codecs.open(line1.strip('\n'), encoding='utf8')
            soup = BeautifulSoup(html, "html.parser")
            html.close()
        except:

            try:
                html = open(line1.strip('\n'))
                soup = BeautifulSoup(html, "html.parser")
                html.close()
            except:

                nError += 1
                print("There was a problem to read the file " + line1 + " in the Listing section!")
                if createLog:
                    logFile.write(str(nError) + ". There was a problem to read the file " + line1 + " in the Listing section.\n")
                readError = True

        if not readError:

            parseError = False
            try:

                if forum == "BestCardingWorld":
                    rw = bestcardingworld_listing_parser(soup)
                elif forum == "CryptBB":
                    rw = cryptBB_listing_parser(soup)

            except:

                nError += 1
                print("There was a problem to read the file " + line1 + " in the listing section!")
                traceback.print_exc()
                if createLog:
                    logFile.write(
                        str(nError) + ". There was a problem to read the file " + line1 + " in the Listing section.\n")
                parseError = True

            if not parseError:

                persistError = False
                moveError = False
                num_in_db = 0
                num_persisted_moved = 0

                for rec in rw:

                    rec = rec.split(',')

                    # key = u"Top:" + rec[1].upper().strip() + u" User:" + rec[5].upper().strip()
                    # key = rec[16]
                    url = ''.join(e for e in rec[16] if e.isalnum())
                    key = u"Url:" + url

                    if key in detPage:

                        # Combining the information from Listing and Description Pages
                        rmm = detPage[key]['rmm']
                        rec = mergePages(rmm, rec)

                        # Append to the list the classification of the topic
                        # if isRussianForum(forum):
                        #    rec.append(str(predict(rec[1], getPosts(rec[8]), language='sup_russian')))
                        # else:
                        #    rec.append(str(predict(rec[1], getPosts(rec[8]), language='sup_english')))
                        rec.append(str(predict(rec[1], getPosts(rec[8]), language='sup_english')))

                        # Persisting the information in the database
                        try:
                            persist_data(tuple(rec), cur)
                            con.commit()
                        except:

                            trace = traceback.format_exc()

                            if trace.find("already exists") == -1:
                                nError += 1
                                print("There was a problem to persist the file " + detPage[key]['filename'] + " in the database!")
                                if createLog:
                                    logFile.write(
                                        str(nError) + ". There was a problem to persist the file " + detPage[key]['filename'] + " in the database.\n")
                                persistError = True

                            con.rollback()

                        if not persistError:

                            # move description files of completed folder
                            source = line2.replace(os.path.basename(line2), "") + detPage[key]['filename']
                            destination = line2.replace(os.path.basename(line2), "") + r'Read/'

                            try:
                                shutil.move(source, destination)
                                num_persisted_moved += 1
                            except:

                                print("There was a problem to move the file " + detPage[key]['filename'] + " in the Description section!")
                                nError += 1
                                if createLog:
                                    logFile.write(
                                        str(nError) + ". There was a problem to move the file " + detPage[key]['filename'] + " in the Description section!.\n")
                                moveError = True

                    # if the associated description page is not read or not parsed
                    else:
                        # query database
                        # if the post already exists:
                        #     num_in_db += 1
                        pass

                # if number of topics on listing page is equal to
                # the number of merged, persisted, and moved topics plus
                # the number of topics already in the database
                if not persistError and not moveError and len(rw) == (num_persisted_moved + num_in_db):

                    # move listing file to completed folder
                    source = line1
                    destination = line1.replace(os.path.basename(line1), "") + r'Read/'

                    try:
                        shutil.move(source, destination)
                    except:

                        nError += 1
                        print("There was a problem to move the file " + line1 + " in the Listing section!")
                        if createLog:
                            logFile.write(str(nError) + ". There was a problem to move the file " + line1 + " in the Listing section!.\n")

    if createLog:
        logFile.close()

    #end = time.time()

    #finalTime = float(end-ini)

    #print (forum + " Parsing Perfomed Succesfully in %.2f" %finalTime + "!")

    input("Parsing the " + forum + " forum and data classification done successfully. Press ENTER to continue\n")