src/enums.h

   1 /*
   2  * Copyright (C) 1996-2014 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_ENUMS_H
  10 #define SQUID_ENUMS_H
  11
  12 enum fd_type {
  13     FD_NONE,
  14     FD_LOG,
  15     FD_FILE,
  16     FD_SOCKET,
  17     FD_PIPE,
  18     FD_MSGHDR,
  19     FD_UNKNOWN
  20 };
  21
  22 enum {
  23     FD_READ,
  24     FD_WRITE
  25 };
  26
  27 typedef enum {
  28     PEER_NONE,
  29     PEER_SIBLING,
  30     PEER_PARENT,
  31     PEER_MULTICAST
  32 } peer_t;
  33
  34 typedef enum {
  35     CC_BADHDR = -1,
  36     CC_PUBLIC = 0,
  37     CC_PRIVATE,
  38     CC_NO_CACHE,
  39     CC_NO_STORE,
  40     CC_NO_TRANSFORM,
  41     CC_MUST_REVALIDATE,
  42     CC_PROXY_REVALIDATE,
  43     CC_MAX_AGE,
  44     CC_S_MAXAGE,
  45     CC_MAX_STALE,
  46     CC_MIN_FRESH,
  47     CC_ONLY_IF_CACHED,
  48     CC_STALE_IF_ERROR,
  49     CC_OTHER,
  50     CC_ENUM_END
  51 } http_hdr_cc_type;
  52
  53 typedef enum {
  54     SC_NO_STORE,
  55     SC_NO_STORE_REMOTE,
  56     SC_MAX_AGE,
  57     SC_CONTENT,
  58     SC_OTHER,
  59     SC_ENUM_END
  60 } http_hdr_sc_type;
  61
  62 typedef enum _mem_status_t {
  63     NOT_IN_MEMORY,
  64     IN_MEMORY
  65 } mem_status_t;
  66
  67 typedef enum {
  68     PING_NONE,
  69     PING_WAITING,
  70     PING_DONE
  71 } ping_status_t;
  72
  73 typedef enum {
  74     STORE_OK,
  75     STORE_PENDING
  76 } store_status_t;
  77
  78 typedef enum {
  79     SWAPOUT_NONE,
  80     SWAPOUT_WRITING,
  81     SWAPOUT_DONE
  82 } swap_status_t;
  83
  84 typedef enum {
  85     STORE_NON_CLIENT,
  86     STORE_MEM_CLIENT,
  87     STORE_DISK_CLIENT
  88 } store_client_t;
  89
  90 /*
  91  * These are for StoreEntry->flag, which is defined as a SHORT
  92  *
  93  * NOTE: These flags are written to swap.state, so think very carefully
  94  * about deleting or re-assigning!
  95  */
  96 enum {
  97     ENTRY_SPECIAL,
  98     ENTRY_REVALIDATE,
  99     DELAY_SENDING,
 100     RELEASE_REQUEST,
 101     REFRESH_REQUEST,
 102     ENTRY_CACHABLE_RESERVED_FOR_FUTURE_USE,
 103     ENTRY_DISPATCHED,
 104     KEY_PRIVATE,
 105     ENTRY_FWD_HDR_WAIT,
 106     ENTRY_NEGCACHED,
 107     ENTRY_VALIDATED,
 108     ENTRY_BAD_LENGTH,
 109     ENTRY_ABORTED
 110 };
 111
 112 /*
 113  * These are for client Streams. Each node in the stream can be queried for
 114  * its status
 115  */
 116 typedef enum {
 117     STREAM_NONE,                /* No particular status */
 118     STREAM_COMPLETE,            /* All data has been flushed, no more reads allowed */
 119     /* an unpredicted end has occured, no more
 120      * reads occured, but no need to tell
 121      * downstream that an error occured
 122      */
 123     STREAM_UNPLANNED_COMPLETE,
 124     /* An error has occured in this node or an above one,
 125      * and the node is not generating an error body / it's
 126      * midstream
 127      */
 128     STREAM_FAILED
 129 } clientStream_status_t;
 130
 131 /* stateful helper callback response codes */
 132 typedef enum {
 133     S_HELPER_UNKNOWN,
 134     S_HELPER_RESERVE,
 135     S_HELPER_RELEASE
 136 } stateful_helper_callback_t;
 137
 138 #if SQUID_SNMP
 139 enum {
 140     SNMP_C_VIEW,
 141     SNMP_C_USER,
 142     SNMP_C_COMMUNITY
 143 };
 144 #endif /* SQUID_SNMP */
 145
 146 enum {
 147     STORE_LOG_CREATE,
 148     STORE_LOG_SWAPIN,
 149     STORE_LOG_SWAPOUT,
 150     STORE_LOG_RELEASE,
 151     STORE_LOG_SWAPOUTFAIL
 152 };
 153
 154 /* parse state of HttpReply or HttpRequest */
 155 typedef enum {
 156     psReadyToParseStartLine = 0,
 157     psReadyToParseHeaders,
 158     psParsed,
 159     psError
 160 } HttpMsgParseState;
 161
 162 enum {
 163     PCTILE_HTTP,
 164     PCTILE_ICP_QUERY,
 165     PCTILE_DNS,
 166     PCTILE_HIT,
 167     PCTILE_MISS,
 168     PCTILE_NM,
 169     PCTILE_NH,
 170     PCTILE_ICP_REPLY
 171 };
 172
 173 enum {
 174     SENT,
 175     RECV
 176 };
 177
 178 /*
 179  * These are field indicators for raw cache-cache netdb transfers
 180  */
 181 enum {
 182     NETDB_EX_NONE,
 183     NETDB_EX_NETWORK,
 184     NETDB_EX_RTT,
 185     NETDB_EX_HOPS
 186 };
 187
 188 /*
 189  * Return codes from checkVary(request)
 190  */
 191 enum {
 192     VARY_NONE,
 193     VARY_MATCH,
 194     VARY_OTHER,
 195     VARY_CANCEL
 196 };
 197
 198 /*
 199  * Store digest state enum
 200  */
 201 typedef enum {
 202     DIGEST_READ_NONE,
 203     DIGEST_READ_REPLY,
 204     DIGEST_READ_HEADERS,
 205     DIGEST_READ_CBLOCK,
 206     DIGEST_READ_MASK,
 207     DIGEST_READ_DONE
 208 } digest_read_state_t;
 209
 210 /* Distinguish between Request and Reply (for header mangling) */
 211 enum {
 212     ROR_REQUEST,
 213     ROR_REPLY
 214 };
 215
 216 /* CygWin & Windows NT Port */
 217 #if _SQUID_WINDOWS_
 218 /*
 219  * Supported Windows OS types codes
 220  */
 221 enum {
 222     _WIN_OS_UNKNOWN,
 223     _WIN_OS_WIN32S,
 224     _WIN_OS_WIN95,
 225     _WIN_OS_WIN98,
 226     _WIN_OS_WINME,
 227     _WIN_OS_WINNT,
 228     _WIN_OS_WIN2K,
 229     _WIN_OS_WINXP,
 230     _WIN_OS_WINNET,
 231     _WIN_OS_WINLON,
 232     _WIN_OS_WIN7
 233 };
 234 #endif /* _SQUID_WINDOWS_ */
 235
 236 enum {
 237     DISABLE_PMTU_OFF,
 238     DISABLE_PMTU_ALWAYS,
 239     DISABLE_PMTU_TRANSPARENT
 240 };
 241
 242 #if USE_HTCP
 243 /*
 244  * TODO: This should be in htcp.h
 245  */
 246 typedef enum {
 247     HTCP_CLR_PURGE,
 248     HTCP_CLR_INVALIDATION
 249 } htcp_clr_reason;
 250 #endif /* USE_HTCP */
 251
 252 #endif /* SQUID_ENUMS_H */