src/error/forward.h

   1 /*
   2  * Copyright (C) 1996-2023 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_SRC_ERROR_FORWARD_H
  10 #define SQUID_SRC_ERROR_FORWARD_H
  11
  12 #include "base/forward.h"
  13
  14 typedef enum {
  15     ERR_NONE,
  16
  17     /* Access Permission Errors.  Prefix new with ERR_ACCESS_ */
  18     ERR_ACCESS_DENIED,
  19     ERR_CACHE_ACCESS_DENIED,
  20     ERR_CACHE_MGR_ACCESS_DENIED,
  21     ERR_FORWARDING_DENIED,
  22     ERR_NO_RELAY,
  23     ERR_CANNOT_FORWARD,
  24
  25     /* TCP Errors. */
  26     ERR_READ_TIMEOUT,
  27     ERR_LIFETIME_EXP,
  28     ERR_READ_ERROR,
  29     ERR_WRITE_ERROR,
  30     ERR_CONNECT_FAIL,
  31     ERR_SECURE_CONNECT_FAIL,
  32     ERR_SOCKET_FAILURE,
  33
  34     /* DNS Errors */
  35     ERR_DNS_FAIL,
  36     ERR_URN_RESOLVE,
  37
  38     /* HTTP Errors */
  39     ERR_ONLY_IF_CACHED_MISS,    /* failure to satisfy only-if-cached request */
  40     ERR_TOO_BIG,
  41     ERR_INVALID_RESP,
  42     ERR_UNSUP_HTTPVERSION,     /* HTTP version is not supported */
  43     ERR_INVALID_REQ,
  44     ERR_UNSUP_REQ,
  45     ERR_INVALID_URL,
  46     ERR_ZERO_SIZE_OBJECT,
  47     ERR_PRECONDITION_FAILED,
  48     ERR_CONFLICT_HOST,
  49
  50     /* FTP Errors */
  51     ERR_FTP_DISABLED,
  52     ERR_FTP_UNAVAILABLE,
  53     ERR_FTP_FAILURE,
  54     ERR_FTP_PUT_ERROR,
  55     ERR_FTP_NOT_FOUND,
  56     ERR_FTP_FORBIDDEN,
  57     ERR_FTP_PUT_CREATED,        /* !error,a note that the file was created */
  58     ERR_FTP_PUT_MODIFIED,       /* modified, !created */
  59
  60     /* ESI Errors */
  61     ERR_ESI,                    /* Failure to perform ESI processing */
  62
  63     /* ICAP Errors */
  64     ERR_ICAP_FAILURE,
  65
  66     /* Squid problem */
  67     ERR_GATEWAY_FAILURE,
  68
  69     /* Special Cases */
  70     ERR_DIR_LISTING,            /* Display of remote directory (FTP) */
  71     ERR_SQUID_SIGNATURE,        /* not really an error */
  72     ERR_SHUTTING_DOWN,
  73     ERR_PROTOCOL_UNKNOWN,
  74
  75     // NOTE: error types defined below TCP_RESET are optional and do not generate
  76     //       a log warning if the files are missing
  77     TCP_RESET,                  // Send TCP RST packet instead of error page
  78
  79     ERR_CLIENT_GONE, // No client to send the error page to
  80     ERR_SECURE_ACCEPT_FAIL, // Rejects the SSL connection instead of error page
  81     ERR_REQUEST_START_TIMEOUT, // Aborts the connection instead of error page
  82     ERR_REQUEST_PARSE_TIMEOUT, // Aborts the connection instead of error page
  83     ERR_RELAY_REMOTE, // Sends server reply instead of error page
  84
  85     /* Cache Manager GUI can install a manager index/home page */
  86     MGR_INDEX,
  87
  88     ERR_MAX
  89 } err_type;
  90
  91 class Error;
  92 class ErrorDetail;
  93 class ErrorState;
  94
  95 typedef RefCount<ErrorDetail> ErrorDetailPointer;
  96
  97 #endif /* SQUID_SRC_ERROR_FORWARD_H */
  98