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e6ccf245 | 1 | /* |
e6ccf245 | 2 | * |
3 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
4 | * ---------------------------------------------------------- | |
5 | * | |
6 | * Squid is the result of efforts by numerous individuals from | |
7 | * the Internet community; see the CONTRIBUTORS file for full | |
8 | * details. Many organizations have provided support for Squid's | |
9 | * development; see the SPONSORS file for full details. Squid is | |
10 | * Copyrighted (C) 2001 by the Regents of the University of | |
11 | * California; see the COPYRIGHT file for full details. Squid | |
12 | * incorporates software developed and/or copyrighted by other | |
13 | * sources; see the CREDITS file for full details. | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
26ac0430 | 19 | * |
e6ccf245 | 20 | * This program is distributed in the hope that it will be useful, |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
26ac0430 | 24 | * |
e6ccf245 | 25 | * You should have received a copy of the GNU General Public License |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
28 | * | |
29 | */ | |
30 | ||
31 | #ifndef SQUID_ICP_H | |
32 | #define SQUID_ICP_H | |
33 | ||
63be0a78 | 34 | /** |
35 | \defgroup ServerProtocolICPAPI ICP | |
36 | \ingroup ServerProtocol | |
37 | */ | |
38 | ||
e0d28505 | 39 | #include "comm/forward.h" |
582c2af2 | 40 | #include "icp_opcode.h" |
e0d28505 | 41 | #include "ip/Address.h" |
02c8dde5 | 42 | #include "LogTags.h" |
602d9612 | 43 | #include "StoreClient.h" |
e6ccf245 | 44 | |
582c2af2 FC |
45 | class HttpRequest; |
46 | ||
077fe581 | 47 | /** |
63be0a78 | 48 | \ingroup ServerProtocolICPAPI |
49 | * | |
077fe581 | 50 | * This struct is the wire-level header. |
51 | * DO NOT add more move fields on pain of breakage. | |
e6ccf245 | 52 | * DO NOT add virtual methods. |
53 | */ | |
26ac0430 | 54 | struct _icp_common_t { |
63be0a78 | 55 | /** opcode */ |
56 | unsigned char opcode; | |
57 | /** version number */ | |
58 | unsigned char version; | |
59 | /** total length (bytes) */ | |
60 | unsigned short length; | |
61 | /** req number (req'd for UDP) */ | |
09aabd84 FC |
62 | uint32_t reqnum; |
63 | uint32_t flags; | |
64 | uint32_t pad; | |
63be0a78 | 65 | /** sender host id */ |
09aabd84 | 66 | uint32_t shostid; |
63be0a78 | 67 | |
68 | /// \todo I don't believe this header is included in non-c++ code anywhere | |
d85b8894 | 69 | /// the struct should become a public POD class and kill these ifdef. |
e6ccf245 | 70 | #ifdef __cplusplus |
62e76326 | 71 | |
72 | _icp_common_t(); | |
73 | _icp_common_t(char *buf, unsigned int len); | |
74 | ||
b7ac5457 | 75 | void handleReply(char *buf, Ip::Address &from); |
e6ccf245 | 76 | static _icp_common_t *createMessage(icp_opcode opcode, int flags, const char *url, int reqnum, int pad); |
77 | icp_opcode getOpCode() const; | |
78 | #endif | |
79 | }; | |
09bbee4c FC |
80 | typedef struct _icp_common_t icp_common_t; |
81 | ||
e6ccf245 | 82 | #ifdef __cplusplus |
83 | ||
63be0a78 | 84 | /// \ingroup ServerProtocolICPAPI |
62e76326 | 85 | inline icp_opcode & operator++ (icp_opcode & aCode) |
86 | { | |
1f1ae50a | 87 | int tmp = (int) aCode; |
88 | aCode = (icp_opcode) (++tmp); | |
e6ccf245 | 89 | return aCode; |
90 | } | |
91 | ||
63be0a78 | 92 | /** |
93 | \ingroup ServerProtocolICPAPI | |
94 | \todo mempool this | |
95 | */ | |
62e76326 | 96 | class ICPState |
97 | { | |
98 | ||
99 | public: | |
63be0a78 | 100 | ICPState(icp_common_t &aHeader, HttpRequest *aRequest); |
101 | virtual ~ICPState(); | |
e6ccf245 | 102 | icp_common_t header; |
190154cf | 103 | HttpRequest *request; |
e6ccf245 | 104 | int fd; |
62e76326 | 105 | |
b7ac5457 | 106 | Ip::Address from; |
e6ccf245 | 107 | char *url; |
108 | }; | |
109 | ||
110 | #endif | |
111 | ||
63be0a78 | 112 | /// \ingroup ServerProtocolICPAPI |
26ac0430 | 113 | struct icpUdpData { |
65d448bc AJ |
114 | |
115 | /// IP address for the remote end. Because we reply to packets from unknown non-peers. | |
b7ac5457 | 116 | Ip::Address address; |
65d448bc | 117 | |
d4cb310b | 118 | void *msg; |
119 | size_t len; | |
120 | icpUdpData *next; | |
121 | #ifndef LESS_TIMING | |
62e76326 | 122 | |
d4cb310b | 123 | struct timeval start; |
124 | #endif | |
62e76326 | 125 | |
02c8dde5 | 126 | LogTags logcode; |
62e76326 | 127 | |
d4cb310b | 128 | struct timeval queue_time; |
129 | }; | |
130 | ||
e0d28505 AJ |
131 | extern Comm::ConnectionPointer icpIncomingConn; |
132 | extern Comm::ConnectionPointer icpOutgoingConn; | |
133 | extern Ip::Address theIcpPublicHostID; | |
134 | ||
63be0a78 | 135 | /// \ingroup ServerProtocolICPAPI |
8a648e8d | 136 | HttpRequest* icpGetRequest(char *url, int reqnum, int fd, Ip::Address &from); |
62e76326 | 137 | |
63be0a78 | 138 | /// \ingroup ServerProtocolICPAPI |
8a648e8d | 139 | bool icpAccessAllowed(Ip::Address &from, HttpRequest * icp_request); |
62e76326 | 140 | |
63be0a78 | 141 | /// \ingroup ServerProtocolICPAPI |
8a648e8d | 142 | void icpCreateAndSend(icp_opcode, int flags, char const *url, int reqnum, int pad, int fd, const Ip::Address &from); |
63be0a78 | 143 | |
144 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 145 | icp_opcode icpGetCommonOpcode(); |
e6ccf245 | 146 | |
63be0a78 | 147 | /// \ingroup ServerProtocolICPAPI |
02c8dde5 | 148 | int icpUdpSend(int, const Ip::Address &, icp_common_t *, LogTags, int); |
63be0a78 | 149 | |
150 | /// \ingroup ServerProtocolICPAPI | |
02c8dde5 | 151 | LogTags icpLogFromICPCode(icp_opcode opcode); |
62e76326 | 152 | |
63be0a78 | 153 | /// \ingroup ServerProtocolICPAPI |
b7ac5457 | 154 | void icpDenyAccess(Ip::Address &from, char *url, int reqnum, int fd); |
63be0a78 | 155 | |
156 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 157 | PF icpHandleUdp; |
63be0a78 | 158 | |
159 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 160 | PF icpUdpSendQueue; |
62e76326 | 161 | |
63be0a78 | 162 | /// \ingroup ServerProtocolICPAPI |
8a648e8d | 163 | void icpHandleIcpV3(int, Ip::Address &, char *, int); |
63be0a78 | 164 | |
165 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 166 | int icpCheckUdpHit(StoreEntry *, HttpRequest * request); |
63be0a78 | 167 | |
168 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 169 | void icpOpenPorts(void); |
63be0a78 | 170 | |
171 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 172 | void icpConnectionShutdown(void); |
63be0a78 | 173 | |
174 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 175 | void icpClosePorts(void); |
63be0a78 | 176 | |
177 | /// \ingroup ServerProtocolICPAPI | |
8a648e8d | 178 | int icpSetCacheKey(const cache_key * key); |
e6ccf245 | 179 | |
63be0a78 | 180 | /// \ingroup ServerProtocolICPAPI |
8a648e8d | 181 | const cache_key *icpGetCacheKey(const char *url, int reqnum); |
e6ccf245 | 182 | |
e6ccf245 | 183 | #endif /* SQUID_ICP_H */ |