#!/usr/bin/env python

"""
$Id$

Copyright (c) 2006-2012 sqlmap developers (http://www.sqlmap.org/)
See the file 'doc/COPYING' for copying permission
"""

import codecs
import re
import os
import StringIO
import threading

from lib.core.common import Backend
from lib.core.common import dataToDumpFile
from lib.core.common import dataToStdout
from lib.core.common import getUnicode
from lib.core.common import normalizeUnicode
from lib.core.common import openFile
from lib.core.common import restoreDumpMarkedChars
from lib.core.common import safeCSValue
from lib.core.common import unsafeSQLIdentificatorNaming
from lib.core.data import conf
from lib.core.data import kb
from lib.core.data import logger
from lib.core.enums import DBMS
from lib.core.exception import sqlmapValueException
from lib.core.replication import Replication
from lib.core.settings import BUFFERED_LOG_SIZE
from lib.core.settings import NULL
from lib.core.settings import TRIM_STDOUT_DUMP_SIZE
from lib.core.settings import UNICODE_ENCODING

class Dump:
    """
    This class defines methods used to parse and output the results
    of SQL injection actions

    """

    def __init__(self):
        self._outputFile = None
        self._outputFP = None
        self._outputBP = None
        self._lock = threading.Lock()

    def _write(self, data, n=True, console=True):
        text = "%s%s" % (data, "\n" if n else " ")
        if console:
            dataToStdout(text)

        if kb.get("multiThreadMode"):
            self._lock.acquire()

        self._outputBP.write(text)

        if self._outputBP.tell() > BUFFERED_LOG_SIZE:
            self.flush()

        if kb.get("multiThreadMode"):
            self._lock.release()

        kb.dataOutputFlag = True

    def flush(self):
        if self._outputBP and self._outputFP and self._outputBP.tell() > 0:
            _ = self._outputBP.getvalue()
            self._outputBP.truncate(0)
            self._outputFP.write(_)

    def _formatString(self, inpStr):
        return restoreDumpMarkedChars(getUnicode(inpStr))

    def setOutputFile(self):
        self._outputFile = "%s%slog" % (conf.outputPath, os.sep)
        self._outputFP = codecs.open(self._outputFile, "ab", UNICODE_ENCODING)
        self._outputBP = StringIO.StringIO()

    def getOutputFile(self):
        self.flush()
        return self._outputFile

    def string(self, header, data, sort=True):
        if isinstance(data, (list, tuple, set)):
            self.lister(header, data, sort)

            return

        if data:
            data = self._formatString(getUnicode(data))

            if data[-1] == '\n':
                data = data[:-1]

            if "\n" in data:
                self._write("%s:\n---\n%s\n---\n" % (header, data))
            else:
                self._write("%s:    '%s'\n" % (header, data))
        else:
            self._write("%s:\tNone\n" % header)

    def lister(self, header, elements, sort=True):
        if elements:
            self._write("%s [%d]:" % (header, len(elements)))

        if sort:
            try:
                elements = set(elements)
                elements = list(elements)
                elements.sort(key=lambda x: x.lower() if isinstance(x, basestring) else x)
            except:
                pass

        for element in elements:
            if isinstance(element, basestring):
                self._write("[*] %s" % element)
            elif isinstance(element, (list, tuple, set)):
                self._write("[*] " + ", ".join(getUnicode(e) for e in element))

        if elements:
            self._write("")

    def technic(self, header, data):
        self.string(header, data)

    def banner(self,data):
        self.string("banner", data)

    def currentUser(self,data):
        self.string("current user", data)

    def currentDb(self,data):
        if Backend.isDbms(DBMS.MAXDB):
            self.string("current database (no practical usage on %s)" % Backend.getIdentifiedDbms(), data)
        elif Backend.isDbms(DBMS.ORACLE):
            self.string("current schema (equivalent to database on %s)" % Backend.getIdentifiedDbms(), data)
        else:
            self.string("current database", data)

    def dba(self,data):
        self.string("current user is DBA", data)

    def users(self,users):
        self.lister("database management system users", users)

    def userSettings(self, header, userSettings, subHeader):
        self._areAdmins = set()

        if userSettings:
            self._write("%s:" % header)

        if isinstance(userSettings, (tuple, list, set)):
            self._areAdmins = userSettings[1]
            userSettings = userSettings[0]

        users = userSettings.keys()
        users.sort(key=lambda x: x.lower() if isinstance(x, basestring) else x)

        for user in users:
            settings = userSettings[user]

            if settings is None:
                stringSettings = ""
            else:
                stringSettings = " [%d]:" % len(settings)

            if user in self._areAdmins:
                self._write("[*] %s (administrator)%s" % (user, stringSettings))
            else:
                self._write("[*] %s%s" % (user, stringSettings))

            if settings:
                settings.sort()

                for setting in settings:
                    self._write("    %s: %s" % (subHeader, setting))
        print

    def dbs(self,dbs):
        self.lister("available databases", dbs)

    def dbTables(self, dbTables):
        if isinstance(dbTables, dict) and len(dbTables) > 0:
            maxlength = 0

            for tables in dbTables.values():
                for table in tables:
                    if isinstance(table, (list, tuple, set)):
                        table = table[0]

                    maxlength = max(maxlength, len(normalizeUnicode(table) or str(table)))

            lines = "-" * (int(maxlength) + 2)

            for db, tables in dbTables.items():
                tables.sort()

                self._write("Database: %s" % db if db else "Current database")

                if len(tables) == 1:
                    self._write("[1 table]")
                else:
                    self._write("[%d tables]" % len(tables))

                self._write("+%s+" % lines)

                for table in tables:
                    if isinstance(table, (list, tuple, set)):
                        table = table[0]

                    blank = " " * (maxlength - len(normalizeUnicode(table) or str(table)))
                    self._write("| %s%s |" % (table, blank))

                self._write("+%s+\n" % lines)
        elif dbTables is None or len(dbTables) == 0:
            print "No tables found"
        else:
            self.string("tables", dbTables)

    def dbTableColumns(self, tableColumns):
        if isinstance(tableColumns, dict) and len(tableColumns) > 0:
            for db, tables in tableColumns.items():
                if not db:
                    db = "All"

                for table, columns in tables.items():
                    maxlength1 = 0
                    maxlength2 = 0

                    colType = None

                    colList = columns.keys()
                    colList.sort(key=lambda x: x.lower() if isinstance(x, basestring) else x)

                    for column in colList:
                        colType = columns[column]

                        maxlength1 = max(maxlength1, len(column or ""))
                        maxlength2 = max(maxlength2, len(colType or ""))

                    maxlength1 = max(maxlength1, len("COLUMN"))
                    lines1 = "-" * (maxlength1 + 2)

                    if colType is not None:
                        maxlength2 = max(maxlength2, len("TYPE"))
                        lines2 = "-" * (maxlength2 + 2)

                    self._write("Database: %s\nTable: %s" % (db if db else "Current database", table))

                    if len(columns) == 1:
                        self._write("[1 column]")
                    else:
                        self._write("[%d columns]" % len(columns))

                    if colType is not None:
                        self._write("+%s+%s+" % (lines1, lines2))
                    else:
                        self._write("+%s+" % lines1)

                    blank1 = " " * (maxlength1 - len("COLUMN"))

                    if colType is not None:
                        blank2 = " " * (maxlength2 - len("TYPE"))

                    if colType is not None:
                        self._write("| Column%s | Type%s |" % (blank1, blank2))
                        self._write("+%s+%s+" % (lines1, lines2))
                    else:
                        self._write("| Column%s |" % blank1)
                        self._write("+%s+" % lines1)

                    for column in colList:
                        colType = columns[column]
                        blank1 = " " * (maxlength1 - len(column))

                        if colType is not None:
                            blank2 = " " * (maxlength2 - len(colType))
                            self._write("| %s%s | %s%s |" % (column, blank1, colType, blank2))
                        else:
                            self._write("| %s%s |" % (column, blank1))

                    if colType is not None:
                        self._write("+%s+%s+\n" % (lines1, lines2))
                    else:
                        self._write("+%s+\n" % lines1)

    def dbTablesCount(self, dbTables):
        if isinstance(dbTables, dict) and len(dbTables) > 0:
            maxlength1 = len("Table")
            maxlength2 = len("Entries")

            for ctables in dbTables.values():
                for tables in ctables.values():
                    for table in tables:
                        maxlength1 = max(maxlength1, len(normalizeUnicode(table) or str(table)))

            for db, counts in dbTables.items():
                self._write("Database: %s" % db if db else "Current database")

                lines1 = "-" * (maxlength1 + 2)
                blank1 = " " * (maxlength1 - len("Table"))
                lines2 = "-" * (maxlength2 + 2)
                blank2 = " " * (maxlength2 - len("Entries"))

                self._write("+%s+%s+" % (lines1, lines2))
                self._write("| Table%s | Entries%s |" % (blank1, blank2))
                self._write("+%s+%s+" % (lines1, lines2))

                sortedCounts = counts.keys()
                sortedCounts.sort(reverse=True)

                for count in sortedCounts:
                    tables = counts[count]

                    if count is None:
                        count = "Unknown"

                    tables.sort(key=lambda x: x.lower() if isinstance(x, basestring) else x)

                    for table in tables:
                        blank1 = " " * (maxlength1 - len(normalizeUnicode(table) or str(table)))
                        blank2 = " " * (maxlength2 - len(str(count)))
                        self._write("| %s%s | %d%s |" % (table, blank1, count, blank2))

                self._write("+%s+%s+\n" % (lines1, lines2))
        else:
            logger.error("unable to retrieve the number of entries for any table")

    def dbTableValues(self, tableValues):
        replication = None
        rtable = None

        if tableValues is None:
            return

        db = tableValues["__infos__"]["db"]
        if not db:
            db = "All"
        table = tableValues["__infos__"]["table"]

        if conf.replicate:
            replication = Replication("%s%s%s.sqlite3" % (conf.dumpPath, os.sep, unsafeSQLIdentificatorNaming(db)))
        else:
            dumpDbPath = "%s%s%s" % (conf.dumpPath, os.sep, unsafeSQLIdentificatorNaming(db))

            if not os.path.isdir(dumpDbPath):
                os.makedirs(dumpDbPath, 0755)

            dumpFileName = "%s%s%s.csv" % (dumpDbPath, os.sep, unsafeSQLIdentificatorNaming(table))
            dumpFP = openFile(dumpFileName, "wb")

        count = int(tableValues["__infos__"]["count"])
        separator = str()
        field = 1
        fields = len(tableValues) - 1

        columns = tableValues.keys()
        columns.sort(key=lambda x: x.lower() if isinstance(x, basestring) else x)

        for column in columns:
            if column != "__infos__":
                info = tableValues[column]
                lines = "-" * (int(info["length"]) + 2)
                separator += "+%s" % lines

        separator += "+"
        self._write("Database: %s\nTable: %s" % (db if db else "Current database", table))

        if conf.replicate:
            cols = []

            for column in columns:
                if column != "__infos__":
                    colType = Replication.INTEGER

                    for value in tableValues[column]['values']:
                        try:
                            if not value or re.search("^[\ *]*$", value): #NULL
                                continue

                            int(value)
                        except ValueError:
                            colType = None
                            break

                    if colType is None:
                        colType = Replication.REAL

                        for value in tableValues[column]['values']:
                            try:
                                if not value or re.search("^[\ *]*$", value): #NULL
                                    continue

                                float(value)
                            except ValueError:
                                colType = None
                                break

                    cols.append((column, colType if colType else Replication.TEXT))

            rtable = replication.createTable(table, cols)

        if count == 1:
            self._write("[1 entry]")
        else:
            self._write("[%d entries]" % count)

        self._write(separator)

        for column in columns:
            if column != "__infos__":
                info = tableValues[column]
                maxlength = int(info["length"])
                blank = " " * (maxlength - len(column))

                self._write("| %s%s" % (column, blank), n=False)

                if not conf.replicate:
                    if field == fields:
                        dataToDumpFile(dumpFP, "%s" % safeCSValue(column))
                    else:
                        dataToDumpFile(dumpFP, "%s%s" % (safeCSValue(column), conf.csvDel))

                field += 1

        self._write("|\n%s" % separator)

        if not conf.replicate:
            dataToDumpFile(dumpFP, "\n")

        if conf.replicate:
            rtable.beginTransaction()

        if count > TRIM_STDOUT_DUMP_SIZE:
            warnMsg = "console output will be trimmed to "
            warnMsg += "last %d rows due to " % TRIM_STDOUT_DUMP_SIZE
            warnMsg += "large table size"
            logger.warning(warnMsg)

        for i in xrange(count):
            console = (i >= count - TRIM_STDOUT_DUMP_SIZE)
            field = 1
            values = []

            for column in columns:
                if column != "__infos__":
                    info = tableValues[column]

                    if len(info["values"]) <= i:
                        continue

                    if info["values"][i] is None:
                        value = u''
                    else:
                        value = getUnicode(info["values"][i])

                        if re.search("^[\ *]*$", value):
                            value = NULL

                    values.append(value)
                    maxlength = int(info["length"])
                    blank = " " * (maxlength - len(value))
                    self._write("| %s%s" % (value, blank), n=False, console=console)

                    if not conf.replicate:
                        if field == fields:
                            dataToDumpFile(dumpFP, "%s" % safeCSValue(value))
                        else:
                            dataToDumpFile(dumpFP, "%s%s" % (safeCSValue(value), conf.csvDel))

                    field += 1

            if conf.replicate:
                try:
                    rtable.insert(values)
                except sqlmapValueException:
                    pass

            self._write("|", console=console)

            if not conf.replicate:
                dataToDumpFile(dumpFP, "\n")

        self._write("%s\n" % separator)

        if conf.replicate:
            rtable.endTransaction()
            logger.info("Table '%s.%s' dumped to sqlite3 file '%s'" % (db, table, replication.dbpath))

        else:
            dataToDumpFile(dumpFP, "\n")
            dumpFP.close()
            logger.info("Table '%s.%s' dumped to CSV file '%s'" % (db, table, dumpFileName))

    def dbColumns(self, dbColumnsDict, colConsider, dbs):
        for column in dbColumnsDict.keys():
            if colConsider == "1":
                colConsiderStr = "s like '" + column + "' were"
            else:
                colConsiderStr = " '%s' was" % column

            msg = "Column%s found in the " % colConsiderStr
            msg += "following databases:"
            self._write(msg)

            _ = {}

            for db, tblData in dbs.items():
                for tbl, colData in tblData.items():
                    for col, dataType in colData.items():
                        if column.lower() in col.lower():
                            if db in _:
                                if tbl in _[db]:
                                    _[db][tbl][col] = dataType
                                else:
                                    _[db][tbl] = { col: dataType }
                            else:
                                _[db] = {}
                                _[db][tbl] = { col: dataType }

                            continue

            self.dbTableColumns(_)

    def query(self, query, queryRes):
        self.string(query, queryRes)

    def rFile(self,filePath,fileData):
        self.string("%s file saved to" % filePath,fileData,sort=False)

    def registerValue(self,registerData):
        self.string("Registry key value data", registerData,sort=False)

# object to manage how to print the retrieved queries output to
# standard output and sessions file
dumper = Dump()