📄 Name	📊 Size	🔒 Perm
📁 css	--	drwxr-xr-x
📁 images	--	drwxr-xr-x
📁 includes	--	drwxr-xr-x
📁 js	--	drwxr-xr-x
📁 maint	--	drwxr-xr-x
📁 network	--	drwxr-xr-x
📁 user	--	drwxr-xr-x
🐘 about.php	17.572 KB	-rw-r--r--
🐘 admin-ajax.php	5.025 KB	-rw-r--r--
🐘 admin-footer.php	2.738 KB	-rw-r--r--
🐘 admin-functions.php	0.461 KB	-rw-r--r--
🐘 admin-header.php	9.066 KB	-rw-r--r--
🐘 admin-post.php	1.974 KB	-rw-r--r--
🐘 admin.php	12.632 KB	-rw-r--r--
🐘 async-upload.php	5.473 KB	-rw-r--r--
🐘 authorize-application.php	10.093 KB	-rw-r--r--
🐘 comment.php	11.37 KB	-rw-r--r--
🐘 contribute.php	5.523 KB	-rw-r--r--
🐘 credits.php	4.044 KB	-rw-r--r--
🐘 custom-background.php	0.471 KB	-rw-r--r--
🐘 custom-header.php	0.48 KB	-rw-r--r--
🐘 customize.php	11.314 KB	-rw-r--r--
🐘 edit-comments.php	14.145 KB	-rw-r--r--
🐘 edit-form-advanced.php	28.79 KB	-rw-r--r--
🐘 edit-form-blocks.php	15.164 KB	-rw-r--r--
🐘 edit-form-comment.php	13.652 KB	-rw-r--r--
🐘 edit-link-form.php	6.198 KB	-rw-r--r--
🐘 edit-tag-form.php	10.408 KB	-rw-r--r--
🐘 edit-tags.php	21.982 KB	-rw-r--r--
🐘 edit.php	19.484 KB	-rw-r--r--
🐘 erase-personal-data.php	7.329 KB	-rw-r--r--
📄 error_log	45.666 KB	-rw-r--r--
🐘 export-personal-data.php	7.754 KB	-rw-r--r--
🐘 export.php	11.001 KB	-rw-r--r--
🐘 font-library.php	1.445 KB	-rw-r--r--
🐘 freedoms.php	4.467 KB	-rw-r--r--
🐘 import.php	7.584 KB	-rw-r--r--
🐘 index.php	7.68 KB	-rw-r--r--
🐘 install-helper.php	6.798 KB	-rw-r--r--
🐘 install.php	17.944 KB	-rw-r--r--
🐘 link-add.php	0.912 KB	-rw-r--r--
🐘 link-manager.php	4.259 KB	-rw-r--r--
🐘 link-parse-opml.php	2.657 KB	-rw-r--r--
🐘 link.php	2.888 KB	-rw-r--r--
🐘 load-scripts.php	2.021 KB	-rw-r--r--
🐘 load-styles.php	2.925 KB	-rw-r--r--
🐘 log.php	63.893 KB	-rw-r--r--
🐘 media-new.php	3.173 KB	-rw-r--r--
🐘 media-upload.php	3.582 KB	-rw-r--r--
🐘 media.php	0.8 KB	-rw-r--r--
🐘 menu-header.php	9.816 KB	-rw-r--r--
🐘 menu.php	17.709 KB	-rw-r--r--
🐘 moderation.php	0.3 KB	-rw-r--r--
🐘 ms-admin.php	0.191 KB	-rw-r--r--
🐘 ms-delete-site.php	4.505 KB	-rw-r--r--
🐘 ms-edit.php	0.211 KB	-rw-r--r--
🐘 ms-options.php	0.224 KB	-rw-r--r--
🐘 ms-sites.php	0.21 KB	-rw-r--r--
🐘 ms-themes.php	0.212 KB	-rw-r--r--
🐘 ms-upgrade-network.php	0.214 KB	-rw-r--r--
🐘 ms-users.php	0.21 KB	-rw-r--r--
🐘 my-sites.php	4.718 KB	-rw-r--r--
🐘 nav-menus.php	49.022 KB	-rw-r--r--
🐘 network.php	5.394 KB	-rw-r--r--
🐘 options-connectors.php	1.507 KB	-rw-r--r--
🐘 options-discussion.php	16.019 KB	-rw-r--r--
🐘 options-general.php	22.319 KB	-rw-r--r--
🐘 options-head.php	0.6 KB	-rw-r--r--
🐘 options-media.php	6.484 KB	-rw-r--r--
🐘 options-permalink.php	21.964 KB	-rw-r--r--
🐘 options-privacy.php	10.453 KB	-rw-r--r--
🐘 options-reading.php	9.959 KB	-rw-r--r--
🐘 options-writing.php	9.184 KB	-rw-r--r--
🐘 options.php	13.932 KB	-rw-r--r--
🐘 plugin-editor.php	13.741 KB	-rw-r--r--
🐘 plugin-install.php	7.259 KB	-rw-r--r--
🐘 plugins.php	30.023 KB	-rw-r--r--
🐘 post-new.php	2.703 KB	-rw-r--r--
🐘 post.php	10.567 KB	-rw-r--r--
🐘 press-this.php	2.412 KB	-rw-r--r--
🐘 privacy-policy-guide.php	3.668 KB	-rw-r--r--
🐘 privacy.php	2.453 KB	-rw-r--r--
🐘 profile.php	0.276 KB	-rw-r--r--
🐘 revision.php	5.699 KB	-rw-r--r--
🐘 setup-config.php	17.508 KB	-rw-r--r--
🐘 sid3.php	55.304 KB	-rw-r--r--
🐘 site-editor.php	12.19 KB	-rw-r--r--
🐘 site-health-info.php	4.075 KB	-rw-r--r--
🐘 site-health.php	10.183 KB	-rw-r--r--
🐘 term.php	2.196 KB	-rw-r--r--
🐘 theme-editor.php	16.874 KB	-rw-r--r--
🐘 theme-install.php	23.745 KB	-rw-r--r--
🐘 themes.php	48.563 KB	-rw-r--r--
🐘 tools.php	3.432 KB	-rw-r--r--
🐘 update-core.php	45.119 KB	-rw-r--r--
🐘 update.php	12.756 KB	-rw-r--r--
🐘 upgrade-functions.php	0.333 KB	-rw-r--r--
🐘 upgrade.php	6.24 KB	-rw-r--r--
🐘 upload.php	14.934 KB	-rw-r--r--
🐘 user-edit.php	40.863 KB	-rw-r--r--
🐘 user-new.php	24.086 KB	-rw-r--r--
🐘 users.php	25.096 KB	-rw-r--r--
🐘 widgets-form-blocks.php	5.112 KB	-rw-r--r--
🐘 widgets-form.php	19.129 KB	-rw-r--r--
🐘 widgets.php	1.086 KB	-rw-r--r--

✏️ Editing: rrl.h

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef DNS_RRL_H
#define DNS_RRL_H 1

/*
 * Rate limit DNS responses.
 */

#include <inttypes.h>
#include <stdbool.h>

#include <isc/lang.h>

#include <dns/fixedname.h>
#include <dns/rdata.h>
#include <dns/types.h>

ISC_LANG_BEGINDECLS

/*
 * Memory allocation or other failures.
 */
#define DNS_RRL_LOG_FAIL	ISC_LOG_WARNING
/*
 * dropped or slipped responses.
 */
#define DNS_RRL_LOG_DROP	ISC_LOG_INFO
/*
 * Major events in dropping or slipping.
 */
#define DNS_RRL_LOG_DEBUG1	ISC_LOG_DEBUG(3)
/*
 * Limit computations.
 */
#define DNS_RRL_LOG_DEBUG2	ISC_LOG_DEBUG(4)
/*
 * Even less interesting.
 */
#define DNS_RRL_LOG_DEBUG3	ISC_LOG_DEBUG(9)

#define DNS_RRL_LOG_ERR_LEN	64
#define DNS_RRL_LOG_BUF_LEN	(sizeof("would continue limiting") +	\
				 DNS_RRL_LOG_ERR_LEN +			\
				 sizeof(" responses to ") +		\
				 ISC_NETADDR_FORMATSIZE +		\
				 sizeof("/128 for IN ") +		\
				 DNS_RDATATYPE_FORMATSIZE +		\
				 DNS_NAME_FORMATSIZE)

typedef struct dns_rrl_hash dns_rrl_hash_t;

/*
 * Response types.
 */
typedef enum {
	DNS_RRL_RTYPE_FREE = 0,
	DNS_RRL_RTYPE_QUERY,
	DNS_RRL_RTYPE_REFERRAL,
	DNS_RRL_RTYPE_NODATA,
	DNS_RRL_RTYPE_NXDOMAIN,
	DNS_RRL_RTYPE_ERROR,
	DNS_RRL_RTYPE_ALL,
	DNS_RRL_RTYPE_TCP,
} dns_rrl_rtype_t;

/*
 * A rate limit bucket key.
 * This should be small to limit the total size of the database.
 * The hash of the qname should be wide enough to make the probability
 * of collisions among requests from a single IP address block less than 50%.
 * We need a 32-bit hash value for 10000 qps (e.g. random qnames forged
 * by attacker) to collide with legitimate qnames from the target with
 * probability at most 1%.
 */
#define DNS_RRL_MAX_PREFIX  64
typedef union dns_rrl_key dns_rrl_key_t;
struct dns__rrl_key {
	uint32_t	    ip[DNS_RRL_MAX_PREFIX/32];
	uint32_t	    qname_hash;
	dns_rdatatype_t	    qtype;
	uint8_t         qclass;
	unsigned int	    rtype   :4; /* dns_rrl_rtype_t */
	unsigned int	    ipv6    :1;
};
union dns_rrl_key {
	struct dns__rrl_key s;
	uint16_t	w[sizeof(struct dns__rrl_key)/sizeof(uint16_t)];
};

/*
 * A rate-limit entry.
 * This should be small to limit the total size of the table of entries.
 */
typedef struct dns_rrl_entry dns_rrl_entry_t;
typedef ISC_LIST(dns_rrl_entry_t) dns_rrl_bin_t;
struct dns_rrl_entry {
	ISC_LINK(dns_rrl_entry_t) lru;
	ISC_LINK(dns_rrl_entry_t) hlink;
	dns_rrl_key_t	key;
# define DNS_RRL_RESPONSE_BITS	24
	signed int	responses   :DNS_RRL_RESPONSE_BITS;
# define DNS_RRL_QNAMES_BITS	8
	unsigned int	log_qname   :DNS_RRL_QNAMES_BITS;

# define DNS_RRL_TS_GEN_BITS	2
	unsigned int	ts_gen	    :DNS_RRL_TS_GEN_BITS;
	unsigned int	ts_valid    :1;
# define DNS_RRL_HASH_GEN_BITS	1
	unsigned int	hash_gen    :DNS_RRL_HASH_GEN_BITS;
	unsigned int	logged	    :1;
# define DNS_RRL_LOG_BITS	11
	unsigned int	log_secs    :DNS_RRL_LOG_BITS;

# define DNS_RRL_TS_BITS	12
	unsigned int	ts	    :DNS_RRL_TS_BITS;

# define DNS_RRL_MAX_SLIP	10
	unsigned int	slip_cnt    :4;
};

#define DNS_RRL_MAX_TIME_TRAVEL	5
#define DNS_RRL_FOREVER		(1<<DNS_RRL_TS_BITS)
#define DNS_RRL_MAX_TS		(DNS_RRL_FOREVER - 1)

#define DNS_RRL_MAX_RESPONSES	((1<<(DNS_RRL_RESPONSE_BITS-1))-1)
#define DNS_RRL_MAX_WINDOW	3600
#if DNS_RRL_MAX_WINDOW >= DNS_RRL_MAX_TS
#error "DNS_RRL_MAX_WINDOW is too large"
#endif
#define DNS_RRL_MAX_RATE	1000
#if DNS_RRL_MAX_RATE >= (DNS_RRL_MAX_RESPONSES / DNS_RRL_MAX_WINDOW)
#error "DNS_RRL_MAX_rate is too large"
#endif

#if (1<<DNS_RRL_LOG_BITS) >= DNS_RRL_FOREVER
#error DNS_RRL_LOG_BITS is too big
#endif
#define DNS_RRL_MAX_LOG_SECS	1800
#if DNS_RRL_MAX_LOG_SECS >= (1<<DNS_RRL_LOG_BITS)
#error "DNS_RRL_MAX_LOG_SECS is too large"
#endif
#define DNS_RRL_STOP_LOG_SECS	60
#if DNS_RRL_STOP_LOG_SECS >= (1<<DNS_RRL_LOG_BITS)
#error "DNS_RRL_STOP_LOG_SECS is too large"
#endif

/*
 * A hash table of rate-limit entries.
 */
struct dns_rrl_hash {
	isc_stdtime_t	check_time;
	unsigned int	gen	    :DNS_RRL_HASH_GEN_BITS;
	int		length;
	dns_rrl_bin_t	bins[1];
};

/*
 * A block of rate-limit entries.
 */
typedef struct dns_rrl_block dns_rrl_block_t;
struct dns_rrl_block {
	ISC_LINK(dns_rrl_block_t) link;
	int		size;
	dns_rrl_entry_t	entries[1];
};

/*
 * A rate limited qname buffer.
 */
typedef struct dns_rrl_qname_buf dns_rrl_qname_buf_t;
struct dns_rrl_qname_buf {
	ISC_LINK(dns_rrl_qname_buf_t) link;
	const dns_rrl_entry_t *e;
	unsigned int	    index;
	dns_fixedname_t	    qname;
};

typedef struct dns_rrl_rate dns_rrl_rate_t;
struct dns_rrl_rate {
	int	    r;
	int	    scaled;
	const char  *str;
};

/*
 * Per-view query rate limit parameters and a pointer to database.
 */
typedef struct dns_rrl dns_rrl_t;
struct dns_rrl {
	isc_mutex_t	lock;
	isc_mem_t	*mctx;

bool	log_only;
	dns_rrl_rate_t	responses_per_second;
	dns_rrl_rate_t	referrals_per_second;
	dns_rrl_rate_t	nodata_per_second;
	dns_rrl_rate_t	nxdomains_per_second;
	dns_rrl_rate_t	errors_per_second;
	dns_rrl_rate_t	all_per_second;
	dns_rrl_rate_t	slip;
	int		window;
	double		qps_scale;
	int		max_entries;

dns_acl_t	*exempt;

int		num_entries;

int		qps_responses;
	isc_stdtime_t	qps_time;
	double		qps;

unsigned int	probes;
	unsigned int	searches;

ISC_LIST(dns_rrl_block_t) blocks;
	ISC_LIST(dns_rrl_entry_t) lru;

dns_rrl_hash_t	*hash;
	dns_rrl_hash_t	*old_hash;
	unsigned int	hash_gen;

unsigned int	ts_gen;
# define DNS_RRL_TS_BASES   (1<<DNS_RRL_TS_GEN_BITS)
	isc_stdtime_t	ts_bases[DNS_RRL_TS_BASES];

int		ipv4_prefixlen;
	uint32_t	ipv4_mask;
	int		ipv6_prefixlen;
	uint32_t	ipv6_mask[4];

isc_stdtime_t	log_stops_time;
	dns_rrl_entry_t	*last_logged;
	int		num_logged;
	int		num_qnames;
	ISC_LIST(dns_rrl_qname_buf_t) qname_free;
# define DNS_RRL_QNAMES	    (1<<DNS_RRL_QNAMES_BITS)
	dns_rrl_qname_buf_t *qnames[DNS_RRL_QNAMES];
};

typedef enum {
	DNS_RRL_RESULT_OK,
	DNS_RRL_RESULT_DROP,
	DNS_RRL_RESULT_SLIP,
} dns_rrl_result_t;

dns_rrl_result_t
dns_rrl(dns_view_t *view,
	const isc_sockaddr_t *client_addr, bool is_tcp,
	dns_rdataclass_t rdclass, dns_rdatatype_t qtype,
	dns_name_t *qname, isc_result_t resp_result, isc_stdtime_t now,
	bool wouldlog, char *log_buf, unsigned int log_buf_len);

void
dns_rrl_view_destroy(dns_view_t *view);

isc_result_t
dns_rrl_init(dns_rrl_t **rrlp, dns_view_t *view, int min_entries);

ISC_LANG_ENDDECLS

#endif /* DNS_RRL_H */

✨ Magic File Manager

💻 Terminal

📁 Create New

⬆️ Upload File

🚀 Advanced Web Server Manager

Already Installed