Martin Natano
dc49af3c59
For now there are two methods: - `NETWORK:IsUrlAllowed()`: Check whether access to a certain URL is allowed. - `NETWORK:HttpRequest()`: Perform an HTTP request. By default access to the network is disabled for all target hosts. It can be enabled by setting `HttpEnable=1` in the preferences. Individual hosts have to be added to `HttpAllowHosts` as a comma separated list to allow access. See included docs for more details on usage.
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* IXWebSocketHttpHeaders.h
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* Author: Benjamin Sergeant
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* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
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*/
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#include "IXWebSocketHttpHeaders.h"
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#include "IXSocket.h"
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#include <algorithm>
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#include <locale>
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namespace ix
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{
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std::pair<bool, WebSocketHttpHeaders> parseHttpHeaders(
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std::unique_ptr<Socket>& socket, const CancellationRequest& isCancellationRequested)
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{
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WebSocketHttpHeaders headers;
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char line[1024];
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int i;
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while (true)
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{
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int colon = 0;
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for (i = 0; i < 2 || (i < 1023 && line[i - 2] != '\r' && line[i - 1] != '\n'); ++i)
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{
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if (!socket->readByte(line + i, isCancellationRequested))
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{
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return std::make_pair(false, headers);
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}
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if (line[i] == ':' && colon == 0)
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{
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colon = i;
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}
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}
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if (line[0] == '\r' && line[1] == '\n')
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{
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break;
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}
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// line is a single header entry. split by ':', and add it to our
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// header map. ignore lines with no colon.
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if (colon > 0)
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{
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line[i] = '\0';
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std::string lineStr(line);
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// colon is ':', usually colon+1 is ' ', and colon+2 is the start of the value.
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// some webservers do not put a space after the colon character, so
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// the start of the value might be farther than colon+2.
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// The spec says that space after the : should be discarded.
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// i is end of string (\0), i-colon is length of string minus key;
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// subtract 1 for '\0', 1 for '\n', 1 for '\r',
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// 1 for the ' ' after the ':', and total is -4
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// since we use an std::string later on and don't account for '\0',
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// plus the optional first space, total is -2
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int start = colon + 1;
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while (lineStr[start] == ' ')
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{
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start++;
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}
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std::string name(lineStr.substr(0, colon));
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std::string value(lineStr.substr(start, lineStr.size() - start - 2));
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headers[name] = value;
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}
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}
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return std::make_pair(true, headers);
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}
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} // namespace ix
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