| 1 |
/* ============================================================================ |
| 2 |
* Douglas Thrift's Search Engine License |
| 3 |
* |
| 4 |
* Copyright (C) 2002, Douglas Thrift. All Rights Reserved. |
| 5 |
* Redistribution and use in source and binary forms, with or without |
| 6 |
* modification, are permitted provided that the following conditions are met: |
| 7 |
* |
| 8 |
* 1. Redistributions of source code must retain the above copyright notice, |
| 9 |
* this list of conditions and the following disclaimer. |
| 10 |
* |
| 11 |
* 2. Redistributions in binary form must reproduce the above copyright notice, |
| 12 |
* this list of conditions and the following disclaimer in the documentation |
| 13 |
* and/or other materials provided with the distribution. |
| 14 |
* |
| 15 |
* 3. The end-user documentation included with the redistribution, if any, must |
| 16 |
* include the following acknowledgment: |
| 17 |
* |
| 18 |
* "This product includes software developed by Douglas Thrift |
| 19 |
* (http://computers.douglasthrift.net/searchengine/)." |
| 20 |
* |
| 21 |
* Alternately, this acknowledgment may appear in the software itself, if |
| 22 |
* and wherever such third-party acknowledgments normally appear. |
| 23 |
* |
| 24 |
* 4. The names "Douglas Thrift" and "Douglas Thrift's Search Engine" must not |
| 25 |
* be used to endorse or promote products derived from this software without |
| 26 |
* specific prior written permission. For written permission, please visit |
| 27 |
* http://www.douglasthrift.net/contact.cgi for contact information. |
| 28 |
* |
| 29 |
* 5. Products derived from this software may not be called "Douglas Thrift's |
| 30 |
* Search Engine", nor may "Douglas Thrift's Search Engine" appear in their |
| 31 |
* name, without prior written permission. |
| 32 |
* |
| 33 |
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 34 |
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 35 |
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 36 |
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 37 |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 38 |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
| 39 |
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 40 |
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 41 |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| 42 |
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 43 |
* ============================================================================ |
| 44 |
*/ |
| 45 |
// Douglas Thrift's Search Engine HTTP Handler |
| 46 |
// |
| 47 |
// Douglas Thrift |
| 48 |
// |
| 49 |
// HttpHandler.cpp |
| 50 |
|
| 51 |
#include "HttpHandler.h" |
| 52 |
|
| 53 |
HttpHandler::HttpHandler() |
| 54 |
{ |
| 55 |
#ifdef _WIN32 |
| 56 |
WSADATA data; |
| 57 |
if (WSAStartup(MAKEWORD(2, 0) != 0, &data)) |
| 58 |
{ |
| 59 |
error(program + ": WSAStartup()"); |
| 60 |
exit(1); |
| 61 |
} |
| 62 |
#endif // _WIN32 |
| 63 |
|
| 64 |
begin = 0; |
| 65 |
} |
| 66 |
|
| 67 |
HttpHandler::~HttpHandler() |
| 68 |
{ |
| 69 |
#ifdef _WIN32 |
| 70 |
WSACleanup(); |
| 71 |
#endif // _WIN32 |
| 72 |
} |
| 73 |
|
| 74 |
bool HttpHandler::connect(URL &url, bool head) |
| 75 |
{ |
| 76 |
bool answer = false; |
| 77 |
|
| 78 |
// if (status != JNI_ERR) |
| 79 |
// { |
| 80 |
// if (cls != 0) |
| 81 |
// { |
| 82 |
// if (mid != 0) |
| 83 |
// { |
| 84 |
// jstring addressJ = env->NewStringUTF(url.getAddress().c_str()); |
| 85 |
// jint portJ = url.getPort(); |
| 86 |
// jstring pathJ = env->NewStringUTF(url.getPath().c_str()); |
| 87 |
// jstring programNameJ = env->NewStringUTF(programName.c_str()); |
| 88 |
// jstring programVersionJ = |
| 89 |
// env->NewStringUTF(programVersion.c_str()); |
| 90 |
|
| 91 |
// jstring pageJ = (jstring)env->CallStaticObjectMethod(cls, mid, |
| 92 |
// addressJ, portJ, pathJ, programNameJ, programVersionJ); |
| 93 |
|
| 94 |
// const char* pageC = env->GetStringUTFChars(pageJ, 0); |
| 95 |
// page = pageC; |
| 96 |
// env->ReleaseStringUTFChars(pageJ, pageC); |
| 97 |
|
| 98 |
// if (page != "unknown host\n" && page != "io exception\n" && |
| 99 |
// page != "bad headers\n") answer = true; |
| 100 |
// } |
| 101 |
// } |
| 102 |
// } |
| 103 |
|
| 104 |
return answer; |
| 105 |
} |
| 106 |
|
| 107 |
HttpHandler& HttpHandler::getline(string& line, char endline) |
| 108 |
{ |
| 109 |
int end = page.find(endline, begin); |
| 110 |
int newline = page.find('\n', begin); |
| 111 |
|
| 112 |
if (newline < end || end == string::npos) |
| 113 |
{ |
| 114 |
end = newline; |
| 115 |
} |
| 116 |
|
| 117 |
line = page.substr(begin, end - begin); |
| 118 |
|
| 119 |
if (end == string::npos) |
| 120 |
{ |
| 121 |
begin = end; |
| 122 |
} |
| 123 |
else |
| 124 |
{ |
| 125 |
begin = end + 1; |
| 126 |
} |
| 127 |
|
| 128 |
return *this; |
| 129 |
} |
| 130 |
|
| 131 |
bool HttpHandler::good() |
| 132 |
{ |
| 133 |
bool answer = true; |
| 134 |
|
| 135 |
if (begin >= page.length()) |
| 136 |
{ |
| 137 |
answer = false; |
| 138 |
} |
| 139 |
else if (begin == string::npos) |
| 140 |
{ |
| 141 |
answer = false; |
| 142 |
} |
| 143 |
|
| 144 |
return answer; |
| 145 |
} |
| 146 |
|
| 147 |
void HttpHandler::clear() |
| 148 |
{ |
| 149 |
begin = 0; |
| 150 |
page = ""; |
| 151 |
} |
| 152 |
|
| 153 |
void HttpHandler::error(const string prefix, bool host) |
| 154 |
{ |
| 155 |
#ifdef _WIN32 |
| 156 |
string error; |
| 157 |
|
| 158 |
switch (WSAGetLastError()) |
| 159 |
{ |
| 160 |
case WSAEACCES: |
| 161 |
error = "Permission denied."; |
| 162 |
break; |
| 163 |
case WSAEADDRINUSE: |
| 164 |
error = "Address already in use."; |
| 165 |
break; |
| 166 |
case WSAEADDRNOTAVAIL: |
| 167 |
error = "Cannot assign requested address."; |
| 168 |
break; |
| 169 |
case WSAEAFNOSUPPORT: |
| 170 |
error = "Address family not supported by protocol family."; |
| 171 |
break; |
| 172 |
case WSAEALREADY: |
| 173 |
error = "Operation already in progress."; |
| 174 |
break; |
| 175 |
case WSAECONNABORTED: |
| 176 |
error = "Software caused connection abort."; |
| 177 |
break; |
| 178 |
case WSAECONNREFUSED: |
| 179 |
error = "Connection refused."; |
| 180 |
break; |
| 181 |
case WSAECONNRESET: |
| 182 |
error = "Connection reset by peer."; |
| 183 |
break; |
| 184 |
case WSAEDESTADDRREQ: |
| 185 |
error = "Destination address required."; |
| 186 |
break; |
| 187 |
case WSAEFAULT: |
| 188 |
error = "Bad address."; |
| 189 |
break; |
| 190 |
case WSAEHOSTDOWN: |
| 191 |
error = "Host is down."; |
| 192 |
break; |
| 193 |
case WSAEHOSTUNREACH: |
| 194 |
error = "No route to host."; |
| 195 |
break; |
| 196 |
case WSAEINPROGRESS: |
| 197 |
error = "Operation now in progress."; |
| 198 |
break; |
| 199 |
case WSAEINTR: |
| 200 |
error = "Interrupted function call."; |
| 201 |
break; |
| 202 |
case WSAEINVAL: |
| 203 |
error = "Invalid argument."; |
| 204 |
break; |
| 205 |
case WSAEISCONN: |
| 206 |
error = "Socket is already connected."; |
| 207 |
break; |
| 208 |
case WSAEMFILE: |
| 209 |
error = "Too many open files."; |
| 210 |
break; |
| 211 |
case WSAEMSGSIZE: |
| 212 |
error = "Message too long."; |
| 213 |
break; |
| 214 |
case WSAENETDOWN: |
| 215 |
error = "Network is down."; |
| 216 |
break; |
| 217 |
case WSAENETRESET: |
| 218 |
error = "Network dropped connection on reset."; |
| 219 |
break; |
| 220 |
case WSAENETUNREACH: |
| 221 |
error = "Network is unreachable."; |
| 222 |
break; |
| 223 |
case WSAENOBUFS: |
| 224 |
error = "No buffer space available."; |
| 225 |
break; |
| 226 |
case WSAENOPROTOOPT: |
| 227 |
error = "Bad protocol option."; |
| 228 |
break; |
| 229 |
case WSAENOTCONN: |
| 230 |
error = "Socket is not connected."; |
| 231 |
break; |
| 232 |
case WSAENOTSOCK: |
| 233 |
error = "Socket operation on non-socket."; |
| 234 |
break; |
| 235 |
case WSAEOPNOTSUPP: |
| 236 |
error = "Operation not supported."; |
| 237 |
break; |
| 238 |
case WSAEPFNOSUPPORT: |
| 239 |
error = "Protocol family not supported."; |
| 240 |
break; |
| 241 |
case WSAEPROCLIM: |
| 242 |
error = "Too many processes."; |
| 243 |
break; |
| 244 |
case WSAEPROTONOSUPPORT: |
| 245 |
error = "Protocol not supported."; |
| 246 |
break; |
| 247 |
case WSAEPROTOTYPE: |
| 248 |
error = "Protocol wrong type for socket."; |
| 249 |
break; |
| 250 |
case WSAESHUTDOWN: |
| 251 |
error = "Cannot send after socket shutdown."; |
| 252 |
break; |
| 253 |
case WSAESOCKTNOSUPPORT: |
| 254 |
error = "Socket type not supported."; |
| 255 |
break; |
| 256 |
case WSAETIMEDOUT: |
| 257 |
error = "Connection timed out."; |
| 258 |
break; |
| 259 |
case WSATYPE_NOT_FOUND: |
| 260 |
error = "Class type not found."; |
| 261 |
break; |
| 262 |
case WSAEWOULDBLOCK: |
| 263 |
error = "Resource temporarily unavailable."; |
| 264 |
break; |
| 265 |
case WSAHOST_NOT_FOUND: |
| 266 |
error = "Host not found."; |
| 267 |
break; |
| 268 |
case WSA_INVALID_HANDLE: |
| 269 |
error = "Specified event object handle is invalid."; |
| 270 |
break; |
| 271 |
case WSA_INVALID_PARAMETER: |
| 272 |
error = "One or more parameters are invalid."; |
| 273 |
break; |
| 274 |
// case WSAINVALIDPROCTABLE: |
| 275 |
// error = "Invalid procedure table from service provider."; |
| 276 |
// break; |
| 277 |
// case WSAINVALIDPROVIDER: |
| 278 |
// error = "Invalid service provider version number."; |
| 279 |
// break; |
| 280 |
case WSA_IO_INCOMPLETE: |
| 281 |
error = "Overlapped I/O event object not in signaled state."; |
| 282 |
break; |
| 283 |
case WSA_IO_PENDING: |
| 284 |
error = "Overlapped operations will complete later."; |
| 285 |
break; |
| 286 |
case WSA_NOT_ENOUGH_MEMORY: |
| 287 |
error = "Insufficient memory available."; |
| 288 |
break; |
| 289 |
case WSANOTINITIALISED: |
| 290 |
error = "Successful WSAStartup not yet performed."; |
| 291 |
break; |
| 292 |
case WSANO_DATA: |
| 293 |
error = "Valid name, no data record of requested type."; |
| 294 |
break; |
| 295 |
case WSANO_RECOVERY: |
| 296 |
error = "This is a non-recoverable error."; |
| 297 |
break; |
| 298 |
// case WSAPROVIDERFAILEDINIT: |
| 299 |
// error = "Unable to initialize a service provider."; |
| 300 |
// break; |
| 301 |
case WSASYSCALLFAILURE: |
| 302 |
error = "System call failure."; |
| 303 |
break; |
| 304 |
case WSASYSNOTREADY: |
| 305 |
error = "Network subsystem is unavailable."; |
| 306 |
break; |
| 307 |
case WSATRY_AGAIN: |
| 308 |
error = "Non-authoritative host not found."; |
| 309 |
break; |
| 310 |
case WSAVERNOTSUPPORTED: |
| 311 |
error = "WINSOCK.DLL version out of range."; |
| 312 |
break; |
| 313 |
case WSAEDISCON: |
| 314 |
error = "Graceful shutdown in progress."; |
| 315 |
break; |
| 316 |
case WSA_OPERATION_ABORTED: |
| 317 |
error = "Overlapped operation aborted."; |
| 318 |
break; |
| 319 |
default: |
| 320 |
error = "Unknown error."; |
| 321 |
break; |
| 322 |
} |
| 323 |
|
| 324 |
cerr << prefix << ": " << error << "\n"; |
| 325 |
#else |
| 326 |
if (host) |
| 327 |
{ |
| 328 |
herror(prefix.c_str()); |
| 329 |
} |
| 330 |
else |
| 331 |
{ |
| 332 |
perror(prefix.c_str()); |
| 333 |
} |
| 334 |
#endif // _WIN32 |
| 335 |
} |
