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00014 #ifdef ENABLE_NETWORK
00015
00016 #include "../../stdafx.h"
00017 #include "../../debug.h"
00018 #include "../../rev.h"
00019 #include "../network_func.h"
00020
00021 #include "tcp_http.h"
00022
00024 static SmallVector<NetworkHTTPSocketHandler *, 1> _http_connections;
00025
00035 NetworkHTTPSocketHandler::NetworkHTTPSocketHandler(SOCKET s,
00036 HTTPCallback *callback, const char *host, const char *url,
00037 const char *data, int depth) :
00038 NetworkSocketHandler(),
00039 recv_pos(0),
00040 recv_length(0),
00041 callback(callback),
00042 data(data),
00043 redirect_depth(depth),
00044 sock(s)
00045 {
00046 size_t bufferSize = strlen(url) + strlen(host) + strlen(_openttd_revision) + (data == NULL ? 0 : strlen(data)) + 128;
00047 char *buffer = AllocaM(char, bufferSize);
00048
00049 DEBUG(net, 7, "[tcp/http] requesting %s%s", host, url);
00050 if (data != NULL) {
00051 seprintf(buffer, buffer + bufferSize - 1, "POST %s HTTP/1.0\r\nHost: %s\r\nUser-Agent: OpenTTD/%s\r\nContent-Type: text/plain\r\nContent-Length: %d\r\n\r\n%s\r\n", url, host, _openttd_revision, (int)strlen(data), data);
00052 } else {
00053 seprintf(buffer, buffer + bufferSize - 1, "GET %s HTTP/1.0\r\nHost: %s\r\nUser-Agent: OpenTTD/%s\r\n\r\n", url, host, _openttd_revision);
00054 }
00055
00056 ssize_t size = strlen(buffer);
00057 ssize_t res = send(this->sock, (const char*)buffer, size, 0);
00058 if (res != size) {
00059
00060
00061 this->callback->OnFailure();
00062 delete this;
00063 return;
00064 }
00065
00066 *_http_connections.Append() = this;
00067 }
00068
00070 NetworkHTTPSocketHandler::~NetworkHTTPSocketHandler()
00071 {
00072 this->CloseConnection();
00073
00074 if (this->sock != INVALID_SOCKET) closesocket(this->sock);
00075 this->sock = INVALID_SOCKET;
00076 free((void*)this->data);
00077 }
00078
00079 NetworkRecvStatus NetworkHTTPSocketHandler::CloseConnection(bool error)
00080 {
00081 NetworkSocketHandler::CloseConnection(error);
00082 return NETWORK_RECV_STATUS_OKAY;
00083 }
00084
00089 #define return_error(msg) { DEBUG(net, 0, msg); return -1; }
00090
00091 static const char * const NEWLINE = "\r\n";
00092 static const char * const END_OF_HEADER = "\r\n\r\n";
00093 static const char * const HTTP_1_0 = "HTTP/1.0 ";
00094 static const char * const HTTP_1_1 = "HTTP/1.1 ";
00095 static const char * const CONTENT_LENGTH = "Content-Length: ";
00096 static const char * const LOCATION = "Location: ";
00097
00108 int NetworkHTTPSocketHandler::HandleHeader()
00109 {
00110 assert(strlen(HTTP_1_0) == strlen(HTTP_1_1));
00111 assert(strstr(this->recv_buffer, END_OF_HEADER) != NULL);
00112
00113
00114 if (strncmp(this->recv_buffer, HTTP_1_0, strlen(HTTP_1_0)) != 0 &&
00115 strncmp(this->recv_buffer, HTTP_1_1, strlen(HTTP_1_1)) != 0) {
00116 return_error("[tcp/http] received invalid HTTP reply");
00117 }
00118
00119 char *status = this->recv_buffer + strlen(HTTP_1_0);
00120 if (strncmp(status, "200", 3) == 0) {
00121
00122
00123
00124 char *length = strcasestr(this->recv_buffer, CONTENT_LENGTH);
00125 if (length == NULL) return_error("[tcp/http] missing 'content-length' header");
00126
00127
00128 length += strlen(CONTENT_LENGTH);
00129
00130
00131
00132 char *end_of_line = strstr(length, NEWLINE);
00133
00134
00135 *end_of_line = '\0';
00136 int len = atoi(length);
00137
00138 *end_of_line = '\r';
00139
00140
00141
00142
00143 if (len == 0) return_error("[tcp/http] refusing to download 0 bytes");
00144
00145 DEBUG(net, 7, "[tcp/http] downloading %i bytes", len);
00146 return len;
00147 }
00148
00149 if (strncmp(status, "301", 3) != 0 &&
00150 strncmp(status, "302", 3) != 0 &&
00151 strncmp(status, "303", 3) != 0 &&
00152 strncmp(status, "307", 3) != 0) {
00153
00154
00155
00156
00157 *strstr(status, NEWLINE) = '\0';
00158 DEBUG(net, 0, "[tcp/http] unhandled status reply %s", status);
00159 return -1;
00160 }
00161
00162 if (this->redirect_depth == 5) return_error("[tcp/http] too many redirects, looping redirects?");
00163
00164
00165 char *uri = strcasestr(this->recv_buffer, LOCATION);
00166 if (uri == NULL) return_error("[tcp/http] missing 'location' header for redirect");
00167
00168 uri += strlen(LOCATION);
00169
00170
00171
00172 char *end_of_line = strstr(uri, NEWLINE);
00173 *end_of_line = '\0';
00174
00175 DEBUG(net, 6, "[tcp/http] redirecting to %s", uri);
00176
00177 int ret = NetworkHTTPSocketHandler::Connect(uri, this->callback, this->data, this->redirect_depth + 1);
00178 if (ret != 0) return ret;
00179
00180
00181 this->data = NULL;
00182
00183
00184 *end_of_line = '\r';
00185 return 0;
00186 }
00187
00195 int NetworkHTTPSocketHandler::Connect(char *uri, HTTPCallback *callback, const char *data, int depth)
00196 {
00197 char *hname = strstr(uri, "://");
00198 if (hname == NULL) return_error("[tcp/http] invalid location");
00199
00200 hname += 3;
00201
00202 char *url = strchr(hname, '/');
00203 if (url == NULL) return_error("[tcp/http] invalid location");
00204
00205 *url = '\0';
00206
00207
00208 const char *company = NULL;
00209 const char *port = NULL;
00210 ParseConnectionString(&company, &port, hname);
00211 if (company != NULL) return_error("[tcp/http] invalid hostname");
00212
00213 NetworkAddress address(hname, port == NULL ? 80 : atoi(port));
00214
00215
00216 *url = '/';
00217 new NetworkHTTPContentConnecter(address, callback, url, data, depth);
00218 return 0;
00219 }
00220
00221 #undef return_error
00222
00230 int NetworkHTTPSocketHandler::Receive()
00231 {
00232 for (;;) {
00233 ssize_t res = recv(this->sock, (char *)this->recv_buffer + this->recv_pos, lengthof(this->recv_buffer) - this->recv_pos, 0);
00234 if (res == -1) {
00235 int err = GET_LAST_ERROR();
00236 if (err != EWOULDBLOCK) {
00237
00238 if (err != 104) DEBUG(net, 0, "recv failed with error %d", err);
00239 return -1;
00240 }
00241
00242 return 1;
00243 }
00244
00245
00246 if (res == 0) {
00247 if (this->recv_length != 0) return -1;
00248
00249 this->callback->OnReceiveData(NULL, 0);
00250 return 0;
00251 }
00252
00253
00254 if (this->recv_length == 0) {
00255 int read = this->recv_pos + res;
00256 int end = min(read, lengthof(this->recv_buffer) - 1);
00257
00258
00259 char prev = this->recv_buffer[end];
00260 this->recv_buffer[end] = '\0';
00261 char *end_of_header = strstr(this->recv_buffer, END_OF_HEADER);
00262 this->recv_buffer[end] = prev;
00263
00264 if (end_of_header == NULL) {
00265 if (read == lengthof(this->recv_buffer)) {
00266 DEBUG(net, 0, "[tcp/http] header too big");
00267 return -1;
00268 }
00269 this->recv_pos = read;
00270 } else {
00271 int ret = this->HandleHeader();
00272 if (ret <= 0) return ret;
00273
00274 this->recv_length = ret;
00275
00276 end_of_header += strlen(END_OF_HEADER);
00277 int len = min(read - (end_of_header - this->recv_buffer), res);
00278 if (len != 0) {
00279 this->callback->OnReceiveData(end_of_header, len);
00280 this->recv_length -= len;
00281 }
00282
00283 this->recv_pos = 0;
00284 }
00285 } else {
00286 res = min(this->recv_length, res);
00287
00288 this->callback->OnReceiveData(this->recv_buffer, res);
00289 this->recv_length -= res;
00290 }
00291 }
00292 }
00293
00297 void NetworkHTTPSocketHandler::HTTPReceive()
00298 {
00299
00300 if (_http_connections.Length() == 0) return;
00301
00302 fd_set read_fd;
00303 struct timeval tv;
00304
00305 FD_ZERO(&read_fd);
00306 for (NetworkHTTPSocketHandler **iter = _http_connections.Begin(); iter < _http_connections.End(); iter++) {
00307 FD_SET((*iter)->sock, &read_fd);
00308 }
00309
00310 tv.tv_sec = tv.tv_usec = 0;
00311 #if !defined(__MORPHOS__) && !defined(__AMIGA__)
00312 int n = select(FD_SETSIZE, &read_fd, NULL, NULL, &tv);
00313 #else
00314 int n = WaitSelect(FD_SETSIZE, &read_fd, NULL, NULL, &tv, NULL);
00315 #endif
00316 if (n == -1) return;
00317
00318 for (NetworkHTTPSocketHandler **iter = _http_connections.Begin(); iter < _http_connections.End(); ) {
00319 NetworkHTTPSocketHandler *cur = *iter;
00320
00321 if (FD_ISSET(cur->sock, &read_fd)) {
00322 int ret = cur->Receive();
00323
00324 if (ret < 0) cur->callback->OnFailure();
00325 if (ret <= 0) {
00326
00327 cur->CloseConnection();
00328 _http_connections.Erase(iter);
00329 delete cur;
00330 continue;
00331 }
00332 }
00333 iter++;
00334 }
00335 }
00336
00337 #endif