src/structs.h

   1 /*
   2  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   3  * ----------------------------------------------------------
   4  *
   5  *  Squid is the result of efforts by numerous individuals from
   6  *  the Internet community; see the CONTRIBUTORS file for full
   7  *  details.   Many organizations have provided support for Squid's
   8  *  development; see the SPONSORS file for full details.  Squid is
   9  *  Copyrighted (C) 2001 by the Regents of the University of
  10  *  California; see the COPYRIGHT file for full details.  Squid
  11  *  incorporates software developed and/or copyrighted by other
  12  *  sources; see the CREDITS file for full details.
  13  *
  14  *  This program is free software; you can redistribute it and/or modify
  15  *  it under the terms of the GNU General Public License as published by
  16  *  the Free Software Foundation; either version 2 of the License, or
  17  *  (at your option) any later version.
  18  *
  19  *  This program is distributed in the hope that it will be useful,
  20  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *  GNU General Public License for more details.
  23  *
  24  *  You should have received a copy of the GNU General Public License
  25  *  along with this program; if not, write to the Free Software
  26  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  27  *
  28  */
  29 #ifndef SQUID_STRUCTS_H
  30 #define SQUID_STRUCTS_H
  31
  32 #include "RefCount.h"
  33 #include "cbdata.h"
  34 #include "dlink.h"
  35 #include "err_type.h"
  36
  37 /* needed for the global config */
  38 #include "HttpHeader.h"
  39
  40 /* for ICP_END */
  41 #include "icp_opcode.h"
  42
  43 #if USE_SSL
  44 #include <openssl/ssl.h>
  45 #endif
  46
  47 #define PEER_MULTICAST_SIBLINGS 1
  48
  49 struct acl_name_list {
  50     char name[ACL_NAME_SZ];
  51     acl_name_list *next;
  52 };
  53
  54 struct acl_deny_info_list {
  55     err_type err_page_id;
  56     char *err_page_name;
  57     acl_name_list *acl_list;
  58     acl_deny_info_list *next;
  59 };
  60
  61
  62 class acl_access;
  63
  64 struct _header_mangler {
  65     acl_access *access_list;
  66     char *replacement;
  67 };
  68
  69 class ACLChecklist;
  70
  71 #if SQUID_SNMP
  72
  73 struct _snmp_request_t {
  74     u_char *buf;
  75     u_char *outbuf;
  76     int len;
  77     int sock;
  78     long reqid;
  79     int outlen;
  80
  81     Ip::Address from;
  82
  83     struct snmp_pdu *PDU;
  84     ACLChecklist *acl_checklist;
  85     u_char *community;
  86
  87     struct snmp_session session;
  88 };
  89
  90 #endif
  91
  92 class ACLList;
  93
  94 struct acl_address {
  95     acl_address *next;
  96     ACLList *aclList;
  97
  98     Ip::Address addr;
  99 };
 100
 101 struct acl_tos {
 102     acl_tos *next;
 103     ACLList *aclList;
 104     tos_t tos;
 105 };
 106
 107 struct acl_nfmark {
 108     acl_nfmark *next;
 109     ACLList *aclList;
 110     nfmark_t nfmark;
 111 };
 112
 113 struct acl_size_t {
 114     acl_size_t *next;
 115     ACLList *aclList;
 116     int64_t size;
 117 };
 118
 119 struct ushortlist {
 120     unsigned short i;
 121     ushortlist *next;
 122 };
 123
 124 struct relist {
 125     int flags;
 126     char *pattern;
 127     regex_t regex;
 128     relist *next;
 129 };
 130
 131 #if USE_DELAY_POOLS
 132 #include "DelayConfig.h"
 133 #include "ClientDelayConfig.h"
 134 #endif
 135
 136 #if USE_ICMP
 137 #include "icmp/IcmpConfig.h"
 138 #endif
 139
 140 #include "HelperChildConfig.h"
 141
 142 /* forward decl for SquidConfig, see RemovalPolicy.h */
 143
 144 class CpuAffinityMap;
 145 class RemovalPolicySettings;
 146 class external_acl;
 147 class SwapDir;
 148
 149 /// Used for boolean enabled/disabled options with complex default logic.
 150 /// Allows Squid to compute the right default after configuration.
 151 /// Checks that not-yet-defined option values are not used.
 152 class YesNoNone
 153 {
 154 // TODO: generalize to non-boolean option types
 155 public:
 156     YesNoNone(): option(0) {}
 157
 158     /// returns true iff enabled; asserts if the option has not been configured
 159     operator void *() const; // TODO: use a fancy/safer version of the operator
 160
 161     /// enables or disables the option;
 162     void configure(bool beSet);
 163
 164     /// whether the option was enabled or disabled, by user or Squid
 165     bool configured() const { return option != 0; }
 166
 167 private:
 168     enum { optUnspecified = -1, optDisabled = 0, optEnabled = 1 };
 169     int option; ///< configured value or zero
 170 };
 171
 172 struct SquidConfig {
 173
 174     struct {
 175         /* These should be for the Store::Root instance.
 176         * this needs pluggable parsing to be done smoothly.
 177         */
 178         int highWaterMark;
 179         int lowWaterMark;
 180     } Swap;
 181
 182     YesNoNone memShared; ///< whether the memory cache is shared among workers
 183     size_t memMaxSize;
 184
 185     struct {
 186         int64_t min;
 187         int pct;
 188         int64_t max;
 189     } quickAbort;
 190     int64_t readAheadGap;
 191     RemovalPolicySettings *replPolicy;
 192     RemovalPolicySettings *memPolicy;
 193 #if USE_HTTP_VIOLATIONS
 194     time_t negativeTtl;
 195 #endif
 196     time_t maxStale;
 197     time_t negativeDnsTtl;
 198     time_t positiveDnsTtl;
 199     time_t shutdownLifetime;
 200     time_t backgroundPingRate;
 201
 202     struct {
 203         time_t read;
 204         time_t write;
 205         time_t lifetime;
 206         time_t connect;
 207         time_t forward;
 208         time_t peer_connect;
 209         time_t request;
 210         time_t clientIdlePconn;
 211         time_t serverIdlePconn;
 212         time_t siteSelect;
 213         time_t deadPeer;
 214         int icp_query;          /* msec */
 215         int icp_query_max;      /* msec */
 216         int icp_query_min;      /* msec */
 217         int mcast_icp_query;    /* msec */
 218
 219 #if !USE_DNSSERVERS
 220
 221         time_msec_t idns_retransmit;
 222         time_msec_t idns_query;
 223 #endif
 224
 225     } Timeout;
 226     size_t maxRequestHeaderSize;
 227     int64_t maxRequestBodySize;
 228     int64_t maxChunkedRequestBodySize;
 229     size_t maxRequestBufferSize;
 230     size_t maxReplyHeaderSize;
 231     acl_size_t *ReplyBodySize;
 232
 233     struct {
 234         unsigned short icp;
 235 #if USE_HTCP
 236
 237         unsigned short htcp;
 238 #endif
 239 #if SQUID_SNMP
 240
 241         unsigned short snmp;
 242 #endif
 243     } Port;
 244
 245     struct {
 246         http_port_list *http;
 247 #if USE_SSL
 248
 249         https_port_list *https;
 250 #endif
 251
 252     } Sockaddr;
 253 #if SQUID_SNMP
 254
 255     struct {
 256         char *configFile;
 257         char *agentInfo;
 258     } Snmp;
 259 #endif
 260 #if USE_WCCP
 261
 262     struct {
 263         Ip::Address router;
 264         Ip::Address address;
 265         int version;
 266     } Wccp;
 267 #endif
 268 #if USE_WCCPv2
 269
 270     struct {
 271         Ip::Address_list *router;
 272         Ip::Address address;
 273         int forwarding_method;
 274         int return_method;
 275         int assignment_method;
 276         int weight;
 277         int rebuildwait;
 278         void *info;
 279     } Wccp2;
 280 #endif
 281
 282 #if USE_ICMP
 283     IcmpConfig pinger;
 284 #endif
 285
 286     char *as_whois_server;
 287
 288     struct {
 289         char *store;
 290         char *swap;
 291         customlog *accesslogs;
 292 #if ICAP_CLIENT
 293         customlog *icaplogs;
 294 #endif
 295         int rotateNumber;
 296     } Log;
 297     char *adminEmail;
 298     char *EmailFrom;
 299     char *EmailProgram;
 300     char *effectiveUser;
 301     char *visible_appname_string;
 302     char *effectiveGroup;
 303
 304     struct {
 305 #if USE_DNSSERVERS
 306         char *dnsserver;
 307 #endif
 308
 309         wordlist *redirect;
 310 #if USE_UNLINKD
 311
 312         char *unlinkd;
 313 #endif
 314
 315         char *diskd;
 316 #if USE_SSL
 317
 318         char *ssl_password;
 319 #endif
 320
 321     } Program;
 322 #if USE_DNSSERVERS
 323
 324     HelperChildConfig dnsChildren;
 325 #endif
 326
 327     HelperChildConfig redirectChildren;
 328     time_t authenticateGCInterval;
 329     time_t authenticateTTL;
 330     time_t authenticateIpTTL;
 331
 332     struct {
 333         char *surrogate_id;
 334     } Accel;
 335     char *appendDomain;
 336     size_t appendDomainLen;
 337     char *pidFilename;
 338     char *netdbFilename;
 339     char *mimeTablePathname;
 340     char *etcHostsPath;
 341     char *visibleHostname;
 342     char *uniqueHostname;
 343     wordlist *hostnameAliases;
 344     char *errHtmlText;
 345
 346     struct {
 347         char *host;
 348         char *file;
 349         time_t period;
 350         unsigned short port;
 351     } Announce;
 352
 353     struct {
 354
 355         Ip::Address udp_incoming;
 356         Ip::Address udp_outgoing;
 357 #if SQUID_SNMP
 358         Ip::Address snmp_incoming;
 359         Ip::Address snmp_outgoing;
 360 #endif
 361         /* FIXME INET6 : this should really be a CIDR value */
 362         Ip::Address client_netmask;
 363     } Addrs;
 364     size_t tcpRcvBufsz;
 365     size_t udpMaxHitObjsz;
 366     wordlist *hierarchy_stoplist;
 367     wordlist *mcast_group_list;
 368     wordlist *dns_nameservers;
 369     peer *peers;
 370     int npeers;
 371
 372     struct {
 373         int size;
 374         int low;
 375         int high;
 376     } ipcache;
 377
 378     struct {
 379         int size;
 380     } fqdncache;
 381     int minDirectHops;
 382     int minDirectRtt;
 383     cachemgr_passwd *passwd_list;
 384
 385     struct {
 386         int objectsPerBucket;
 387         int64_t avgObjectSize;
 388         int64_t maxObjectSize;
 389         int64_t minObjectSize;
 390         size_t maxInMemObjSize;
 391     } Store;
 392
 393     struct {
 394         int high;
 395         int low;
 396         time_t period;
 397     } Netdb;
 398
 399     struct {
 400         int log_udp;
 401         int res_defnames;
 402         int anonymizer;
 403         int client_db;
 404         int query_icmp;
 405         int icp_hit_stale;
 406         int buffered_logs;
 407         int common_log;
 408         int log_mime_hdrs;
 409         int log_fqdn;
 410         int announce;
 411         int mem_pools;
 412         int test_reachability;
 413         int half_closed_clients;
 414         int refresh_all_ims;
 415 #if USE_HTTP_VIOLATIONS
 416
 417         int reload_into_ims;
 418 #endif
 419
 420         int offline;
 421         int redir_rewrites_host;
 422         int prefer_direct;
 423         int nonhierarchical_direct;
 424         int strip_query_terms;
 425         int redirector_bypass;
 426         int ignore_unknown_nameservers;
 427         int client_pconns;
 428         int server_pconns;
 429         int error_pconns;
 430 #if USE_CACHE_DIGESTS
 431
 432         int digest_generation;
 433 #endif
 434
 435         int ie_refresh;
 436         int vary_ignore_expire;
 437         int pipeline_prefetch;
 438         int surrogate_is_remote;
 439         int request_entities;
 440         int detect_broken_server_pconns;
 441         int balance_on_multiple_ip;
 442         int relaxed_header_parser;
 443         int check_hostnames;
 444         int allow_underscore;
 445         int via;
 446         int emailErrData;
 447         int httpd_suppress_version_string;
 448         int global_internal_static;
 449         int dns_require_A;
 450
 451 #if FOLLOW_X_FORWARDED_FOR
 452         int acl_uses_indirect_client;
 453         int delay_pool_uses_indirect_client;
 454         int log_uses_indirect_client;
 455 #if LINUX_NETFILTER
 456         int tproxy_uses_indirect_client;
 457 #endif
 458 #endif /* FOLLOW_X_FORWARDED_FOR */
 459
 460         int WIN32_IpAddrChangeMonitor;
 461         int memory_cache_first;
 462         int memory_cache_disk;
 463         int hostStrictVerify;
 464         int client_dst_passthru;
 465     } onoff;
 466
 467     int forward_max_tries;
 468     int connect_retries;
 469
 470     class ACL *aclList;
 471
 472     struct {
 473         acl_access *http;
 474         acl_access *adapted_http;
 475         acl_access *icp;
 476         acl_access *miss;
 477         acl_access *NeverDirect;
 478         acl_access *AlwaysDirect;
 479         acl_access *ASlists;
 480         acl_access *noCache;
 481         acl_access *log;
 482 #if SQUID_SNMP
 483
 484         acl_access *snmp;
 485 #endif
 486 #if USE_HTTP_VIOLATIONS
 487         acl_access *brokenPosts;
 488 #endif
 489         acl_access *redirector;
 490         acl_access *reply;
 491         acl_address *outgoing_address;
 492 #if USE_HTCP
 493
 494         acl_access *htcp;
 495         acl_access *htcp_clr;
 496 #endif
 497
 498 #if USE_SSL
 499         acl_access *ssl_bump;
 500 #endif
 501 #if FOLLOW_X_FORWARDED_FOR
 502         acl_access *followXFF;
 503 #endif /* FOLLOW_X_FORWARDED_FOR */
 504
 505 #if ICAP_CLIENT
 506         acl_access* icap;
 507 #endif
 508     } accessList;
 509     acl_deny_info_list *denyInfoList;
 510
 511     struct {
 512         size_t list_width;
 513         int list_wrap;
 514         char *anon_user;
 515         int passive;
 516         int epsv_all;
 517         int epsv;
 518         int eprt;
 519         int sanitycheck;
 520         int telnet;
 521     } Ftp;
 522     refresh_t *Refresh;
 523
 524     struct _cacheSwap {
 525         RefCount<SwapDir> *swapDirs;
 526         int n_allocated;
 527         int n_configured;
 528         /// number of disk processes required to support all cache_dirs
 529         int n_strands;
 530     } cacheSwap;
 531     /*
 532      * I'm sick of having to keep doing this ..
 533      */
 534 #define INDEXSD(i)   (Config.cacheSwap.swapDirs[(i)].getRaw())
 535
 536     struct {
 537         char *directory;
 538         int use_short_names;
 539     } icons;
 540     char *errorDirectory;
 541 #if USE_ERR_LOCALES
 542     char *errorDefaultLanguage;
 543     int errorLogMissingLanguages;
 544 #endif
 545     char *errorStylesheet;
 546
 547     struct {
 548         int onerror;
 549     } retry;
 550
 551     struct {
 552         int64_t limit;
 553     } MemPools;
 554 #if USE_DELAY_POOLS
 555
 556     DelayConfig Delay;
 557     ClientDelayConfig ClientDelay;
 558 #endif
 559
 560     struct {
 561         int icp_average;
 562         int dns_average;
 563         int http_average;
 564         int icp_min_poll;
 565         int dns_min_poll;
 566         int http_min_poll;
 567     } comm_incoming;
 568     int max_open_disk_fds;
 569     int uri_whitespace;
 570     acl_size_t *rangeOffsetLimit;
 571 #if MULTICAST_MISS_STREAM
 572
 573     struct {
 574
 575         Ip::Address addr;
 576         int ttl;
 577         unsigned short port;
 578         char *encode_key;
 579     } mcast_miss;
 580 #endif
 581
 582     /* one access list per header type we know of */
 583     header_mangler request_header_access[HDR_ENUM_END];
 584     /* one access list per header type we know of */
 585     header_mangler reply_header_access[HDR_ENUM_END];
 586     char *coredump_dir;
 587     char *chroot_dir;
 588 #if USE_CACHE_DIGESTS
 589
 590     struct {
 591         int bits_per_entry;
 592         time_t rebuild_period;
 593         time_t rewrite_period;
 594         size_t swapout_chunk_size;
 595         int rebuild_chunk_percentage;
 596     } digest;
 597 #endif
 598 #if USE_SSL
 599
 600     struct {
 601         int unclean_shutdown;
 602         char *ssl_engine;
 603     } SSL;
 604 #endif
 605
 606     wordlist *ext_methods;
 607
 608     struct {
 609         int high_rptm;
 610         int high_pf;
 611         size_t high_memory;
 612     } warnings;
 613     char *store_dir_select_algorithm;
 614     int sleep_after_fork;       /* microseconds */
 615     time_t minimum_expiry_time; /* seconds */
 616     external_acl *externalAclHelperList;
 617
 618 #if USE_SSL
 619
 620     struct {
 621         char *cert;
 622         char *key;
 623         int version;
 624         char *options;
 625         char *cipher;
 626         char *cafile;
 627         char *capath;
 628         char *crlfile;
 629         char *flags;
 630         acl_access *cert_error;
 631         SSL_CTX *sslContext;
 632     } ssl_client;
 633 #endif
 634
 635     char *accept_filter;
 636     int umask;
 637     int max_filedescriptors;
 638     int workers;
 639     CpuAffinityMap *cpuAffinityMap;
 640
 641 #if USE_LOADABLE_MODULES
 642     wordlist *loadable_module_names;
 643 #endif
 644
 645     int client_ip_max_connections;
 646
 647     struct {
 648         int v4_first;       ///< Place IPv4 first in the order of DNS results.
 649         ssize_t packet_max; ///< maximum size EDNS advertised for DNS replies.
 650     } dns;
 651 };
 652
 653 SQUIDCEXTERN SquidConfig Config;
 654
 655 struct SquidConfig2 {
 656     struct {
 657         int enable_purge;
 658         int mangle_request_headers;
 659     } onoff;
 660     uid_t effectiveUserID;
 661     gid_t effectiveGroupID;
 662 };
 663
 664 SQUIDCEXTERN SquidConfig2 Config2;
 665
 666 struct _close_handler {
 667     PF *handler;
 668     void *data;
 669     close_handler *next;
 670 };
 671
 672 struct _dread_ctrl {
 673     int fd;
 674     off_t offset;
 675     int req_len;
 676     char *buf;
 677     int end_of_file;
 678     DRCB *handler;
 679     void *client_data;
 680 };
 681
 682 struct _dwrite_q {
 683     off_t file_offset;
 684     char *buf;
 685     size_t len;
 686     size_t buf_offset;
 687     dwrite_q *next;
 688     FREE *free_func;
 689 };
 690
 691 struct _fde_disk {
 692     DWCB *wrt_handle;
 693     void *wrt_handle_data;
 694     dwrite_q *write_q;
 695     dwrite_q *write_q_tail;
 696     off_t offset;
 697 };
 698
 699
 700 /* per field statistics */
 701
 702 class HttpHeaderFieldStat
 703 {
 704
 705 public:
 706     HttpHeaderFieldStat() : aliveCount(0), seenCount(0), parsCount(0), errCount(0), repCount(0) {}
 707
 708     int aliveCount;             /* created but not destroyed (count) */
 709     int seenCount;              /* #fields we've seen */
 710     int parsCount;              /* #parsing attempts */
 711     int errCount;               /* #pasring errors */
 712     int repCount;               /* #repetitons */
 713 };
 714
 715 /* compiled version of HttpHeaderFieldAttrs plus stats */
 716 #include "SquidString.h"
 717
 718 class HttpHeaderFieldInfo
 719 {
 720
 721 public:
 722     HttpHeaderFieldInfo() : id (HDR_ACCEPT), type (ftInvalid) {}
 723
 724     http_hdr_type id;
 725     String name;
 726     field_type type;
 727     HttpHeaderFieldStat stat;
 728 };
 729
 730 struct _http_state_flags {
 731     unsigned int proxying:1;
 732     unsigned int keepalive:1;
 733     unsigned int only_if_cached:1;
 734     unsigned int handling1xx:1; ///< we are ignoring or forwarding 1xx response
 735     unsigned int headers_parsed:1;
 736     unsigned int front_end_https:2;
 737     unsigned int originpeer:1;
 738     unsigned int keepalive_broken:1;
 739     unsigned int abuse_detected:1;
 740     unsigned int request_sent:1;
 741     unsigned int do_next_read:1;
 742     unsigned int consume_body_data:1;
 743     unsigned int chunked:1; ///< reading a chunked response; TODO: rename
 744     unsigned int chunked_request:1; ///< writing a chunked request
 745     unsigned int sentLastChunk:1; ///< do not try to write last-chunk again
 746 };
 747
 748 struct _domain_ping {
 749     char *domain;
 750     int do_ping;                /* boolean */
 751     domain_ping *next;
 752 };
 753
 754 struct _domain_type {
 755     char *domain;
 756     peer_t type;
 757     domain_type *next;
 758 };
 759
 760 class PeerDigest;
 761
 762 struct peer {
 763     u_int index;
 764     char *name;
 765     char *host;
 766     peer_t type;
 767
 768     Ip::Address in_addr;
 769
 770     struct {
 771         int pings_sent;
 772         int pings_acked;
 773         int fetches;
 774         int rtt;
 775         int ignored_replies;
 776         int n_keepalives_sent;
 777         int n_keepalives_recv;
 778         time_t probe_start;
 779         time_t last_query;
 780         time_t last_reply;
 781         time_t last_connect_failure;
 782         time_t last_connect_probe;
 783         int logged_state;       /* so we can print dead/revived msgs */
 784         int conn_open;          /* current opened connections */
 785     } stats;
 786
 787     struct {
 788         int version;
 789         int counts[ICP_END+1];
 790         unsigned short port;
 791     } icp;
 792
 793 #if USE_HTCP
 794     struct {
 795         double version;
 796         int counts[2];
 797         unsigned short port;
 798     } htcp;
 799 #endif
 800
 801     unsigned short http_port;
 802     domain_ping *peer_domain;
 803     domain_type *typelist;
 804     acl_access *access;
 805
 806     struct {
 807         unsigned int proxy_only:1;
 808         unsigned int no_query:1;
 809         unsigned int background_ping:1;
 810         unsigned int no_digest:1;
 811         unsigned int default_parent:1;
 812         unsigned int roundrobin:1;
 813         unsigned int weighted_roundrobin:1;
 814         unsigned int mcast_responder:1;
 815         unsigned int closest_only:1;
 816 #if USE_HTCP
 817         unsigned int htcp:1;
 818         unsigned int htcp_oldsquid:1;
 819         unsigned int htcp_no_clr:1;
 820         unsigned int htcp_no_purge_clr:1;
 821         unsigned int htcp_only_clr:1;
 822         unsigned int htcp_forward_clr:1;
 823 #endif
 824         unsigned int no_netdb_exchange:1;
 825 #if USE_DELAY_POOLS
 826         unsigned int no_delay:1;
 827 #endif
 828         unsigned int allow_miss:1;
 829         unsigned int carp:1;
 830         struct {
 831             unsigned int set:1; //If false, whole url is to be used. Overrides others
 832             unsigned int scheme:1;
 833             unsigned int host:1;
 834             unsigned int port:1;
 835             unsigned int path:1;
 836             unsigned int params:1;
 837         } carp_key;
 838 #if USE_AUTH
 839         unsigned int userhash:1;
 840 #endif
 841         unsigned int sourcehash:1;
 842         unsigned int originserver:1;
 843         unsigned int no_tproxy:1;
 844 #if PEER_MULTICAST_SIBLINGS
 845         unsigned int mcast_siblings:1;
 846 #endif
 847     } options;
 848
 849     int weight;
 850     int basetime;
 851
 852     struct {
 853         double avg_n_members;
 854         int n_times_counted;
 855         int n_replies_expected;
 856         int ttl;
 857         int id;
 858
 859         struct {
 860             unsigned int count_event_pending:1;
 861             unsigned int counting:1;
 862         } flags;
 863     } mcast;
 864 #if USE_CACHE_DIGESTS
 865
 866     PeerDigest *digest;
 867     char *digest_url;
 868 #endif
 869
 870     int tcp_up;                 /* 0 if a connect() fails */
 871
 872     Ip::Address addresses[10];
 873     int n_addresses;
 874     int rr_count;
 875     peer *next;
 876     int testing_now;
 877
 878     struct {
 879         unsigned int hash;
 880         double load_multiplier;
 881         double load_factor;     /* normalized weight value */
 882     } carp;
 883 #if USE_AUTH
 884     struct {
 885         unsigned int hash;
 886         double load_multiplier;
 887         double load_factor;     /* normalized weight value */
 888     } userhash;
 889 #endif
 890     struct {
 891         unsigned int hash;
 892         double load_multiplier;
 893         double load_factor;     /* normalized weight value */
 894     } sourcehash;
 895
 896     char *login;                /* Proxy authorization */
 897     time_t connect_timeout;
 898     int connect_fail_limit;
 899     int max_conn;
 900     char *domain;               /* Forced domain */
 901 #if USE_SSL
 902
 903     int use_ssl;
 904     char *sslcert;
 905     char *sslkey;
 906     int sslversion;
 907     char *ssloptions;
 908     char *sslcipher;
 909     char *sslcafile;
 910     char *sslcapath;
 911     char *sslcrlfile;
 912     char *sslflags;
 913     char *ssldomain;
 914     SSL_CTX *sslContext;
 915     SSL_SESSION *sslSession;
 916 #endif
 917
 918     int front_end_https;
 919     int connection_auth;
 920 };
 921
 922 struct _net_db_name {
 923     hash_link hash;             /* must be first */
 924     net_db_name *next;
 925     netdbEntry *net_db_entry;
 926 };
 927
 928 struct _net_db_peer {
 929     const char *peername;
 930     double hops;
 931     double rtt;
 932     time_t expires;
 933 };
 934
 935 struct _netdbEntry {
 936     hash_link hash;             /* must be first */
 937     char network[MAX_IPSTRLEN];
 938     int pings_sent;
 939     int pings_recv;
 940     double hops;
 941     double rtt;
 942     time_t next_ping_time;
 943     time_t last_use_time;
 944     int link_count;
 945     net_db_name *hosts;
 946     net_db_peer *peers;
 947     int n_peers_alloc;
 948     int n_peers;
 949 };
 950
 951 struct _iostats {
 952
 953     enum { histSize = 16 };
 954
 955     struct {
 956         int reads;
 957         int reads_deferred;
 958         int read_hist[histSize];
 959         int writes;
 960         int write_hist[histSize];
 961     }
 962
 963     Http, Ftp, Gopher;
 964 };
 965
 966
 967 struct request_flags {
 968     request_flags(): range(0),nocache(0),ims(0),auth(0),cachable(0),hierarchical(0),loopdetect(0),proxy_keepalive(0),proxying(0),refresh(0),redirected(0),need_validation(0),fail_on_validation_err(0),stale_if_hit(0),accelerated(0),ignore_cc(0),intercepted(0),spoof_client_ip(0),internal(0),internalclient(0),must_keepalive(0),chunked_reply(0),stream_error(0),sslBumped(0),destinationIPLookedUp_(0) {
 969 #if USE_HTTP_VIOLATIONS
 970         nocache_hack = 0;
 971 #endif
 972 #if FOLLOW_X_FORWARDED_FOR
 973         done_follow_x_forwarded_for = 0;
 974 #endif /* FOLLOW_X_FORWARDED_FOR */
 975     }
 976
 977     unsigned int range:1;
 978     unsigned int nocache:1;
 979     unsigned int ims:1;
 980     unsigned int auth:1;
 981     unsigned int cachable:1;
 982     unsigned int hierarchical:1;
 983     unsigned int loopdetect:1;
 984     unsigned int proxy_keepalive:1;
 985 unsigned int proxying:
 986     1;  /* this should be killed, also in httpstateflags */
 987     unsigned int refresh:1;
 988     unsigned int redirected:1;
 989     unsigned int need_validation:1;
 990     unsigned int fail_on_validation_err:1; ///< whether we should fail if validation fails
 991     unsigned int stale_if_hit:1; ///< reply is stale if it is a hit
 992 #if USE_HTTP_VIOLATIONS
 993     unsigned int nocache_hack:1;        /* for changing/ignoring no-cache requests */
 994 #endif
 995     unsigned int accelerated:1;
 996     unsigned int ignore_cc:1;
 997     unsigned int intercepted:1;  /**< transparently intercepted request */
 998     unsigned int spoof_client_ip:1;  /**< spoof client ip if possible */
 999     unsigned int internal:1;
1000     unsigned int internalclient:1;
1001     unsigned int must_keepalive:1;
1002     unsigned int connection_auth:1; /** Request wants connection oriented auth */
1003     unsigned int connection_auth_disabled:1; /** Connection oriented auth can not be supported */
1004     unsigned int connection_proxy_auth:1; /** Request wants connection oriented auth */
1005     unsigned int pinned:1;      /* Request sent on a pinned connection */
1006     unsigned int auth_sent:1;   /* Authentication forwarded */
1007     unsigned int no_direct:1;   /* Deny direct forwarding unless overriden by always_direct. Used in accelerator mode */
1008     unsigned int chunked_reply:1; /**< Reply with chunked transfer encoding */
1009     unsigned int stream_error:1; /**< Whether stream error has occured */
1010     unsigned int sslBumped:1; /**< ssl-bumped request*/
1011
1012     // When adding new flags, please update cloneAdaptationImmune() as needed.
1013
1014     bool resetTCP() const;
1015     void setResetTCP();
1016     void clearResetTCP();
1017     void destinationIPLookupCompleted();
1018     bool destinationIPLookedUp() const;
1019
1020     // returns a partial copy of the flags that includes only those flags
1021     // that are safe for a related (e.g., ICAP-adapted) request to inherit
1022     request_flags cloneAdaptationImmune() const;
1023
1024 #if FOLLOW_X_FORWARDED_FOR
1025     unsigned int done_follow_x_forwarded_for;
1026 #endif /* FOLLOW_X_FORWARDED_FOR */
1027 private:
1028
1029     unsigned int reset_tcp:1;
1030     unsigned int destinationIPLookedUp_:1;
1031 };
1032
1033 struct _link_list {
1034     void *ptr;
1035
1036     struct _link_list *next;
1037 };
1038
1039 struct _cachemgr_passwd {
1040     char *passwd;
1041     wordlist *actions;
1042     cachemgr_passwd *next;
1043 };
1044
1045 struct _refresh_t {
1046     const char *pattern;
1047     regex_t compiled_pattern;
1048     time_t min;
1049     double pct;
1050     time_t max;
1051     refresh_t *next;
1052
1053     struct {
1054         unsigned int icase:1;
1055         unsigned int refresh_ims:1;
1056         unsigned int store_stale:1;
1057 #if USE_HTTP_VIOLATIONS
1058         unsigned int override_expire:1;
1059         unsigned int override_lastmod:1;
1060         unsigned int reload_into_ims:1;
1061         unsigned int ignore_reload:1;
1062         unsigned int ignore_no_cache:1;
1063         unsigned int ignore_no_store:1;
1064         unsigned int ignore_must_revalidate:1;
1065         unsigned int ignore_private:1;
1066         unsigned int ignore_auth:1;
1067 #endif
1068     } flags;
1069     int max_stale;
1070 };
1071
1072
1073 struct _CacheDigest {
1074     /* public, read-only */
1075     char *mask;                 /* bit mask */
1076     int mask_size;              /* mask size in bytes */
1077     int capacity;               /* expected maximum for .count, not a hard limit */
1078     int bits_per_entry;         /* number of bits allocated for each entry from capacity */
1079     int count;                  /* number of digested entries */
1080     int del_count;              /* number of deletions performed so far */
1081 };
1082
1083
1084 struct _store_rebuild_data {
1085     int objcount;               /* # objects successfully reloaded */
1086     int expcount;               /* # objects expired */
1087     int scancount;              /* # entries scanned or read from state file */
1088     int clashcount;             /* # swapfile clashes avoided */
1089     int dupcount;               /* # duplicates purged */
1090     int cancelcount;            /* # SWAP_LOG_DEL objects purged */
1091     int invalid;                /* # bad lines */
1092     int badflags;               /* # bad e->flags */
1093     int bad_log_op;
1094     int zero_object_sz;
1095 };
1096
1097 class Logfile;
1098
1099 #include "format/Format.h"
1100 #include "log/Formats.h"
1101 struct _customlog {
1102     char *filename;
1103     ACLList *aclList;
1104     Format::Format *logFormat;
1105     Logfile *logfile;
1106     customlog *next;
1107     Log::Format::log_type type;
1108 };
1109
1110 #endif /* SQUID_STRUCTS_H */