protected static void parseRuleFlag()

in java/org/apache/catalina/valves/rewrite/RewriteValve.java [738:845]
106 lines of code
58 McCabe index (conditional complexity)

    protected static void parseRuleFlag(String line, RewriteRule rule, String flag) {
        if (flag.equals("B")) {
            rule.setEscapeBackReferences(true);
        } else if (flag.equals("chain") || flag.equals("C")) {
            rule.setChain(true);
        } else if (flag.startsWith("cookie=") || flag.startsWith("CO=")) {
            rule.setCookie(true);
            if (flag.startsWith("cookie")) {
                flag = flag.substring("cookie=".length());
            } else if (flag.startsWith("CO=")) {
                flag = flag.substring("CO=".length());
            }
            StringTokenizer tokenizer = new StringTokenizer(flag, ":");
            if (tokenizer.countTokens() < 2) {
                throw new IllegalArgumentException(sm.getString("rewriteValve.invalidFlags", line, flag));
            }
            rule.setCookieName(tokenizer.nextToken());
            rule.setCookieValue(tokenizer.nextToken());
            if (tokenizer.hasMoreTokens()) {
                rule.setCookieDomain(tokenizer.nextToken());
            }
            if (tokenizer.hasMoreTokens()) {
                try {
                    rule.setCookieLifetime(Integer.parseInt(tokenizer.nextToken()));
                } catch (NumberFormatException e) {
                    throw new IllegalArgumentException(sm.getString("rewriteValve.invalidFlags", line, flag), e);
                }
            }
            if (tokenizer.hasMoreTokens()) {
                rule.setCookiePath(tokenizer.nextToken());
            }
            if (tokenizer.hasMoreTokens()) {
                rule.setCookieSecure(Boolean.parseBoolean(tokenizer.nextToken()));
            }
            if (tokenizer.hasMoreTokens()) {
                rule.setCookieHttpOnly(Boolean.parseBoolean(tokenizer.nextToken()));
            }
        } else if (flag.startsWith("env=") || flag.startsWith("E=")) {
            rule.setEnv(true);
            if (flag.startsWith("env=")) {
                flag = flag.substring("env=".length());
            } else if (flag.startsWith("E=")) {
                flag = flag.substring("E=".length());
            }
            int pos = flag.indexOf(':');
            if (pos == -1 || (pos + 1) == flag.length()) {
                throw new IllegalArgumentException(sm.getString("rewriteValve.invalidFlags", line, flag));
            }
            rule.addEnvName(flag.substring(0, pos));
            rule.addEnvValue(flag.substring(pos + 1));
        } else if (flag.startsWith("forbidden") || flag.startsWith("F")) {
            rule.setForbidden(true);
        } else if (flag.startsWith("gone") || flag.startsWith("G")) {
            rule.setGone(true);
        } else if (flag.startsWith("host") || flag.startsWith("H")) {
            rule.setHost(true);
        } else if (flag.startsWith("last") || flag.startsWith("L")) {
            rule.setLast(true);
        } else if (flag.startsWith("nocase") || flag.startsWith("NC")) {
            rule.setNocase(true);
        } else if (flag.startsWith("noescape") || flag.startsWith("NE")) {
            rule.setNoescape(true);
        } else if (flag.startsWith("next") || flag.startsWith("N")) {
            rule.setNext(true);
            // Note: Proxy is not supported as Tomcat does not have proxy
            // capabilities
        } else if (flag.startsWith("qsappend") || flag.startsWith("QSA")) {
            rule.setQsappend(true);
        } else if (flag.startsWith("qsdiscard") || flag.startsWith("QSD")) {
            rule.setQsdiscard(true);
        } else if (flag.startsWith("redirect") || flag.startsWith("R")) {
            rule.setRedirect(true);
            int redirectCode = HttpServletResponse.SC_FOUND;
            if (flag.startsWith("redirect=") || flag.startsWith("R=")) {
                if (flag.startsWith("redirect=")) {
                    flag = flag.substring("redirect=".length());
                } else if (flag.startsWith("R=")) {
                    flag = flag.substring("R=".length());
                }
                redirectCode = switch (flag) {
                    case "temp" -> HttpServletResponse.SC_FOUND;
                    case "permanent" -> HttpServletResponse.SC_MOVED_PERMANENTLY;
                    case "seeother" -> HttpServletResponse.SC_SEE_OTHER;
                    default -> Integer.parseInt(flag);
                };
            }
            rule.setRedirectCode(redirectCode);
        } else if (flag.startsWith("skip") || flag.startsWith("S")) {
            if (flag.startsWith("skip=")) {
                flag = flag.substring("skip=".length());
            } else if (flag.startsWith("S=")) {
                flag = flag.substring("S=".length());
            }
            rule.setSkip(Integer.parseInt(flag));
        } else if (flag.startsWith("type") || flag.startsWith("T")) {
            if (flag.startsWith("type=")) {
                flag = flag.substring("type=".length());
            } else if (flag.startsWith("T=")) {
                flag = flag.substring("T=".length());
            }
            rule.setType(true);
            rule.setTypeValue(flag);
        } else if (flag.startsWith("valveSkip") || flag.startsWith("VS")) {
            rule.setValveSkip(true);
        } else {
            throw new IllegalArgumentException(sm.getString("rewriteValve.invalidFlags", line, flag));
        }
    }