naughtyfilter.cpp

来自「一个UNIX/LINUX下的基于内容的过滤服务器源代码」· C++ 代码 · 共 603 行 · 第 1/2 页

                }
                if (!wasbefore) {
                    weight = (*o.lm.l[(*o.fg[filtergroup]).banned_phrase_list]).getWeightAt(found[i]);
                    weighting += weight;

                    if (o.show_weighted_found == 1) {
                        if (weightedphrase.length() > 0) {
                            weightedphrase += "+";
                        }
                        if (weight < 0) {
                            weightedphrase += "-";
                        }
                        weightedphrase += (*o.lm.l[(*o.fg[filtergroup]).banned_phrase_list]).getItemAtInt(found[i]);
                    }
                    #ifdef DGDEBUG
                        cout << "found weighted phrase:" << (*o.lm.l[(*o.fg[filtergroup]).banned_phrase_list]).getItemAtInt(found[i]) << std::endl;
                    #endif
                }
            }
        }
        else if (type == -1) {
            exceptionphrase = (*o.lm.l[(*o.fg[filtergroup]).banned_phrase_list]).getItemAtInt(found[i]);
            isException = true;
            break;  // no point in going further
        }
    }
    #ifdef DGDEBUG
        std::cout << "WEIGHTING: " << weighting << std::endl;
    #endif
    if (isException) {
        isItNaughty = false;
        whatIsNaughtyLog = o.language_list.getTranslation(604);
        // Exception phrase found:
        whatIsNaughtyLog += exceptionphrase;
        whatIsNaughty = "";
        return;
    }

    if (isItNaughty) {
        whatIsNaughtyLog = o.language_list.getTranslation(300);
        // Banned Phrase found:
        whatIsNaughtyLog += bannedphrase;
        whatIsNaughty = o.language_list.getTranslation(301);
        // Banned phrase found.
        return;
    }

    if (weighting > (*o.fg[filtergroup]).naughtyness_limit) {
        isItNaughty = true;
        whatIsNaughtyLog = o.language_list.getTranslation(402);
        // Weighted phrase limit of
        whatIsNaughtyLog += String((*o.fg[filtergroup]).naughtyness_limit).toCharArray();
        whatIsNaughtyLog += " : ";
        whatIsNaughtyLog += String(weighting).toCharArray();
        if (o.show_weighted_found == 1) {
            whatIsNaughtyLog += " (";
            whatIsNaughtyLog += weightedphrase;
            whatIsNaughtyLog += ")";
        }
        whatIsNaughty = o.language_list.getTranslation(403);
        // Weighted phrase limit exceeded.
        return;
    }
    if (bannedcombifound) {
        isItNaughty = true;
        whatIsNaughtyLog = o.language_list.getTranslation(400);
        // Banned combination phrase found:
        whatIsNaughtyLog += combifound;
        whatIsNaughty = o.language_list.getTranslation(401);
        // Banned combination phrase found.
        return;
    }

    // whatIsNaughty is what is displayed in the browser
    // whatIsNaughtyLog is what is logged in the log file if at all
}



// when checkPICS is called we assume checkphrase has made the document
// lower case.
void NaughtyFilter::checkPICS(char* file, int l) {
    file[l] = 0;  // to ensure end of c-string marker is there
    (*o.fg[filtergroup]).pics1.match(file);
    if (!(*o.fg[filtergroup]).pics1.matched()) {return;}  // exit if not found
    for (int i = 0; i < (*o.fg[filtergroup]).pics1.numberOfMatches(); i++) {
        checkPICSrating((*o.fg[filtergroup]).pics1.result(i));  // pass on result for further
                                              // tests
    }
}

void NaughtyFilter::checkPICSrating(std::string label) {
    (*o.fg[filtergroup]).pics2.match(label.c_str());
    if (!(*o.fg[filtergroup]).pics2.matched()) {return;}  // exit if not found
    String lab = label.c_str();  // convert to a String for easy manip
    String r;
    String service;
    for (int i = 0; i < (*o.fg[filtergroup]).pics2.numberOfMatches(); i++) {
        r = (*o.fg[filtergroup]).pics2.result(i).c_str();  // ditto
        r = r.after("(");
        r = r.before(")");  // remove the brackets

	// Only check the substring of lab that is between
	// the start of lab (or the end of the previous match)
	// and the start of this rating.
	// It is possible to have multiple ratings in one pics-label.
	// This is done on e.g. http://www.jesusfilm.org/
	if (i == 0) {
	    service = lab.subString(0, (*o.fg[filtergroup]).pics2.offset(i));
	} else {
	    service = lab.subString((*o.fg[filtergroup]).pics2.offset(i-1)+(*o.fg[filtergroup]).pics2.length(i-1), (*o.fg[filtergroup]).pics2.offset(i));
	}

        if (service.contains("safesurf")) {checkPICSratingSafeSurf(r);}
        if (isItNaughty) {return;}
        if (service.contains("evaluweb")) {checkPICSratingevaluWEB(r);}
        if (isItNaughty) {return;}
        if (service.contains("microsys")) {checkPICSratingCyberNOT(r);}
        if (isItNaughty) {return;}
        if (service.contains("icra")) {checkPICSratingICRA(r);}
        if (isItNaughty) {return;}
        if (service.contains("rsac")) {checkPICSratingRSAC(r);}
        if (isItNaughty) {return;}
        if (service.contains("weburbia")) {checkPICSratingWeburbia(r);}
        if (isItNaughty) {return;}
        if (service.contains("vancouver")) {checkPICSratingVancouver(r);}

          // check label for word denoting rating system then pass on to the
          // appropriate function the rating String.
    }
}

// The next few funtions are flipin obvious so no explanation...
void NaughtyFilter::checkPICSratingSafeSurf(String r) {
    checkPICSagainstoption(r, "000 ", (*o.fg[filtergroup]).pics_safesurf_agerange, "Safesurf age range");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "001 ", (*o.fg[filtergroup]).pics_safesurf_profanity, "Safesurf profanity");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "002 ", (*o.fg[filtergroup]).pics_safesurf_heterosexualthemes, "Safesurf heterosexualthemes");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "003 ", (*o.fg[filtergroup]).pics_safesurf_homosexualthemes, "Safesurf ");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "004 ", (*o.fg[filtergroup]).pics_safesurf_nudity, "Safesurf nudity");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "005 ", (*o.fg[filtergroup]).pics_safesurf_violence, "Safesurf violence");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "006 ", (*o.fg[filtergroup]).pics_safesurf_sexviolenceandprofanity, "Safesurf sexviolenceandprofanity");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "007 ", (*o.fg[filtergroup]).pics_safesurf_intolerance, "Safesurf intolerance");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "008 ", (*o.fg[filtergroup]).pics_safesurf_druguse, "Safesurf druguse");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "009 ", (*o.fg[filtergroup]).pics_safesurf_otheradultthemes, "Safesurf otheradultthemes");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "00A ", (*o.fg[filtergroup]).pics_safesurf_gambling, "Safesurf gambling");
    if (isItNaughty) {return;}
}

void NaughtyFilter::checkPICSratingevaluWEB(String r) {
    checkPICSagainstoption(r, "rating ", (*o.fg[filtergroup]).pics_evaluweb_rating, "evaluWEB age range");
}

void NaughtyFilter::checkPICSratingCyberNOT(String r) {
    checkPICSagainstoption(r, "sex ", (*o.fg[filtergroup]).pics_cybernot_sex, "CyberNOT sex rating");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "other ", (*o.fg[filtergroup]).pics_cybernot_sex, "CyberNOT other rating");
}

void NaughtyFilter::checkPICSratingRSAC(String r) {
    checkPICSagainstoption(r, "v ", (*o.fg[filtergroup]).pics_rsac_violence, "RSAC violence");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "s ", (*o.fg[filtergroup]).pics_rsac_sex, "RSAC sex");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "n ", (*o.fg[filtergroup]).pics_rsac_nudity, "RSAC nudity");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "l ", (*o.fg[filtergroup]).pics_rsac_language, "RSAC language");
}

void NaughtyFilter::checkPICSratingICRA(String r) {
    checkPICSagainstoption(r, "la ", (*o.fg[filtergroup]).pics_icra_languagesexual, "ICRA languagesexual");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ca ", (*o.fg[filtergroup]).pics_icra_chat, "ICRA chat");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "cb ", (*o.fg[filtergroup]).pics_icra_moderatedchat, "ICRA moderatedchat");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "lb ", (*o.fg[filtergroup]).pics_icra_languageprofanity, "ICRA languageprofanity");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "lc ", (*o.fg[filtergroup]).pics_icra_languagemildexpletives, "ICRA languagemildexpletives");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "na ", (*o.fg[filtergroup]).pics_icra_nuditygraphic, "ICRA nuditygraphic");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nb ", (*o.fg[filtergroup]).pics_icra_nuditymalegraphic, "ICRA nuditymalegraphic");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nc ", (*o.fg[filtergroup]).pics_icra_nudityfemalegraphic, "ICRA nudityfemalegraphic");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nd ", (*o.fg[filtergroup]).pics_icra_nuditytopless, "ICRA nuditytopless");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ne ", (*o.fg[filtergroup]).pics_icra_nuditybottoms, "ICRA nuditybottoms");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nf ", (*o.fg[filtergroup]).pics_icra_nuditysexualacts, "ICRA nuditysexualacts");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ng ", (*o.fg[filtergroup]).pics_icra_nudityobscuredsexualacts, "ICRA nudityobscuredsexualacts");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nh ", (*o.fg[filtergroup]).pics_icra_nuditysexualtouching, "ICRA nuditysexualtouching");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ni ", (*o.fg[filtergroup]).pics_icra_nuditykissing, "ICRA nuditykissing");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nr ", (*o.fg[filtergroup]).pics_icra_nudityartistic, "ICRA nudityartistic");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ns ", (*o.fg[filtergroup]).pics_icra_nudityeducational, "ICRA nudityeducational");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "nt ", (*o.fg[filtergroup]).pics_icra_nuditymedical, "ICRA nuditymedical");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "oa ", (*o.fg[filtergroup]).pics_icra_drugstobacco, "ICRA drugstobacco");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ob ", (*o.fg[filtergroup]).pics_icra_drugsalcohol, "ICRA drugsalcohol");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "oc ", (*o.fg[filtergroup]).pics_icra_drugsuse, "ICRA drugsuse");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "od ", (*o.fg[filtergroup]).pics_icra_gambling, "ICRA gambling");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "oe ", (*o.fg[filtergroup]).pics_icra_weaponuse, "ICRA weaponuse");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "of ", (*o.fg[filtergroup]).pics_icra_intolerance, "ICRA intolerance");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "og ", (*o.fg[filtergroup]).pics_icra_badexample, "ICRA badexample");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "oh ", (*o.fg[filtergroup]).pics_icra_pgmaterial, "ICRA pgmaterial");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "va ", (*o.fg[filtergroup]).pics_icra_violencerape, "ICRA violencerape");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vb ", (*o.fg[filtergroup]).pics_icra_violencetohumans, "ICRA violencetohumans");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vc ", (*o.fg[filtergroup]).pics_icra_violencetoanimals, "ICRA violencetoanimals");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vd ", (*o.fg[filtergroup]).pics_icra_violencetofantasy, "ICRA violencetofantasy");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "ve ", (*o.fg[filtergroup]).pics_icra_violencekillinghumans, "ICRA violencekillinghumans");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vf ", (*o.fg[filtergroup]).pics_icra_violencekillinganimals, "ICRA violencekillinganimals");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vg ", (*o.fg[filtergroup]).pics_icra_violencekillingfantasy, "ICRA violencekillingfantasy");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vh ", (*o.fg[filtergroup]).pics_icra_violenceinjuryhumans, "ICRA violenceinjuryhumans");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vi ", (*o.fg[filtergroup]).pics_icra_violenceinjuryanimals, "ICRA violenceinjuryanimals");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vj ", (*o.fg[filtergroup]).pics_icra_violenceinjuryfantasy, "ICRA violenceinjuryfantasy");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vr ", (*o.fg[filtergroup]).pics_icra_violenceartisitic, "ICRA violenceartisitic");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vs ", (*o.fg[filtergroup]).pics_icra_violenceeducational, "ICRA violenceeducational");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vt ", (*o.fg[filtergroup]).pics_icra_violencemedical, "ICRA violencemedical");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vu ", (*o.fg[filtergroup]).pics_icra_violencesports, "ICRA violencesports");
    if (isItNaughty) {return;}
    checkPICSagainstoption(r, "vk ", (*o.fg[filtergroup]).pics_icra_violenceobjects, "ICRA violenceobjects");

}

void NaughtyFilter::checkPICSratingWeburbia(String r) {
    checkPICSagainstoption(r, "s ", (*o.fg[filtergroup]).pics_weburbia_rating, "Weburbia rating");
}

void NaughtyFilter::checkPICSratingVancouver(String r) {
    checkPICSagainstoption(r, "MC ", (*o.fg[filtergroup]).pics_vancouver_multiculturalism, "Vancouvermulticulturalism");
    checkPICSagainstoption(r, "Edu ", (*o.fg[filtergroup]).pics_vancouver_educationalcontent, "Vancouvereducationalcontent");
    checkPICSagainstoption(r, "Env ", (*o.fg[filtergroup]).pics_vancouver_environmentalawareness, "Vancouverenvironmentalawareness");
    checkPICSagainstoption(r, "Tol ", (*o.fg[filtergroup]).pics_vancouver_tolerance, "Vancouvertolerance");
    checkPICSagainstoption(r, "V ", (*o.fg[filtergroup]).pics_vancouver_violence, "Vancouverviolence");
    checkPICSagainstoption(r, "S ", (*o.fg[filtergroup]).pics_vancouver_sex, "Vancouversex");
    checkPICSagainstoption(r, "P ", (*o.fg[filtergroup]).pics_vancouver_profanity, "Vancouverprofanity");
    checkPICSagainstoption(r, "SF ", (*o.fg[filtergroup]).pics_vancouver_safety, "Vancouversafety");
    checkPICSagainstoption(r, "Can ", (*o.fg[filtergroup]).pics_vancouver_canadiancontent, "Vancouvercanadiancontent");
    checkPICSagainstoption(r, "Com ", (*o.fg[filtergroup]).pics_vancouver_commercialcontent, "Vancouvercommercialcontent");
    checkPICSagainstoption(r, "Gam ", (*o.fg[filtergroup]).pics_vancouver_gambling, "Vancouvergambling");
}

void NaughtyFilter::checkPICSagainstoption(String s, char* l, int opt, std::string m) {
    if (s.indexOf(l) != -1) {  // if the rating contains the label then:
        int i = 0;
        s = s.after(l);  // get the rating label value
        if (s.indexOf(" ") != -1) {s = s.before(" ");} //remove anything after it
        if (s.length() > 0) {  // sanity checking
            i = s.toInteger();  // convert the value in a String to an integer
            if (opt < i) {  // check its value against the option in config file
                isItNaughty = true;  // must be over limit
                whatIsNaughty = m + " ";
                whatIsNaughty += o.language_list.getTranslation(1000);
                // PICS labeling level exceeded on the above site.

                whatIsNaughtyLog = whatIsNaughty;
            }
        }
    }
}