Squashed 'third_party/seasocks/' content from commit 016dc60

Change-Id: I195fa5bfd0c0e3cc66fbbefcc7b5170bafcf7a36
git-subtree-dir: third_party/seasocks
git-subtree-split: 016dc60b247e0d1d563aea6d22a9075e6884ab9f
diff --git a/src/app/c/ph_test.cpp b/src/app/c/ph_test.cpp
new file mode 100644
index 0000000..4398e04
--- /dev/null
+++ b/src/app/c/ph_test.cpp
@@ -0,0 +1,68 @@
+// Copyright (c) 2013, Matt Godbolt
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without 
+// modification, are permitted provided that the following conditions are met:
+// 
+// Redistributions of source code must retain the above copyright notice, this 
+// list of conditions and the following disclaimer.
+// 
+// Redistributions in binary form must reproduce the above copyright notice, 
+// this list of conditions and the following disclaimer in the documentation 
+// and/or other materials provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+// POSSIBILITY OF SUCH DAMAGE.
+
+#include "seasocks/PageHandler.h"
+#include "seasocks/PrintfLogger.h"
+#include "seasocks/Server.h"
+#include "seasocks/StringUtil.h"
+
+#include <cstring>
+#include <iostream>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+
+using namespace seasocks;
+
+class MyPageHandler: public PageHandler {
+public:
+    virtual std::shared_ptr<Response> handle(const Request& request) {
+        if (request.verb() == Request::Post) {
+            std::string content(request.content(), request.content() + request.contentLength());
+            return Response::textResponse("Thanks for the post. You said: " + content);
+        }
+        if (request.verb() != Request::Get) return Response::unhandled();
+        std::ostringstream ostr;
+        ostr << "<html><head><title>seasocks example</title></head>"
+                "<body>Hello, " << request.credentials()->attributes["fullName"] << "! You asked for " << request.getRequestUri()
+                << " and your ip is " << request.getRemoteAddress().sin_addr.s_addr
+                << " and a random number is " << rand()
+                << "<form action=/post method=post><input type=text name=value1></input><br>"
+                << "<input type=submit value=Submit></input></form>"
+                << "</body></html>";
+        return Response::htmlResponse(ostr.str());
+    }
+};
+
+int main(int argc, const char* argv[]) {
+    std::shared_ptr<Logger> logger(new PrintfLogger(Logger::INFO));
+
+    Server server(logger);
+    server.addPageHandler(std::make_shared<MyPageHandler>());
+
+    server.serve("src/ws_test_web", 9090);
+    return 0;
+}
diff --git a/src/app/c/serve.cpp b/src/app/c/serve.cpp
new file mode 100644
index 0000000..a45501c
--- /dev/null
+++ b/src/app/c/serve.cpp
@@ -0,0 +1,70 @@
+// Copyright (c) 2013, Matt Godbolt
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without 
+// modification, are permitted provided that the following conditions are met:
+// 
+// Redistributions of source code must retain the above copyright notice, this 
+// list of conditions and the following disclaimer.
+// 
+// Redistributions in binary form must reproduce the above copyright notice, 
+// this list of conditions and the following disclaimer in the documentation 
+// and/or other materials provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+// POSSIBILITY OF SUCH DAMAGE.
+
+#include "internal/Version.h"
+
+#include "seasocks/PrintfLogger.h"
+#include "seasocks/Server.h"
+#include "seasocks/StringUtil.h"
+
+#include <cstdio>
+#include <cstdlib>
+#include <getopt.h>
+#include <memory>
+
+using namespace seasocks;
+
+namespace {
+
+const char usage[] = "Usage: %s [-p PORT] [-v] DIR\n"
+                      "   Serves files from DIR over HTTP on port PORT\n";
+
+}
+
+int main(int argc, char* const argv[]) {
+    int port = 80;
+    bool verbose = false;
+    int opt;
+    while ((opt = getopt(argc, argv, "vp:")) != -1) {
+        switch (opt) {
+        case 'v': verbose = true; break;
+        case 'p': port = atoi(optarg); break;
+        default:
+            fprintf(stderr, usage, argv[0]);
+            exit(1);
+        }
+    }
+    if (optind >= argc) {
+        fprintf(stderr, usage, argv[0]);
+        exit(1);
+    }
+
+    auto logger = std::make_shared<PrintfLogger>(
+            verbose ? Logger::DEBUG : Logger::ACCESS);
+    Server server(logger);
+    auto root = argv[optind];
+    server.serve(root, port);
+    return 0;
+}
diff --git a/src/app/c/ws_echo.cpp b/src/app/c/ws_echo.cpp
new file mode 100644
index 0000000..9464a63
--- /dev/null
+++ b/src/app/c/ws_echo.cpp
@@ -0,0 +1,67 @@
+// Copyright (c) 2013, Matt Godbolt
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without 
+// modification, are permitted provided that the following conditions are met:
+// 
+// Redistributions of source code must retain the above copyright notice, this 
+// list of conditions and the following disclaimer.
+// 
+// Redistributions in binary form must reproduce the above copyright notice, 
+// this list of conditions and the following disclaimer in the documentation 
+// and/or other materials provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+// POSSIBILITY OF SUCH DAMAGE.
+
+#include "seasocks/PrintfLogger.h"
+#include "seasocks/Server.h"
+#include "seasocks/StringUtil.h"
+#include "seasocks/WebSocket.h"
+
+#include <cstring>
+#include <iostream>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+
+/* Simple server that echo any text or binary WebSocket messages back. */
+
+using namespace seasocks;
+
+class EchoHandler: public WebSocket::Handler {
+public:
+    virtual void onConnect(WebSocket* connection) {
+    }
+
+    virtual void onData(WebSocket* connection, const uint8_t* data, size_t length) {
+    connection->send(data, length); // binary
+    }
+
+    virtual void onData(WebSocket* connection, const char* data) {
+    connection->send(data); // text
+    }
+
+    virtual void onDisconnect(WebSocket* connection) {
+    }
+};
+
+int main(int argc, const char* argv[]) {
+    std::shared_ptr<Logger> logger(new PrintfLogger(Logger::DEBUG));
+
+    Server server(logger);
+    std::shared_ptr<EchoHandler> handler(new EchoHandler());
+    server.addWebSocketHandler("/", handler);
+    server.serve("/dev/null", 8000);
+    return 0;
+}
diff --git a/src/app/c/ws_test.cpp b/src/app/c/ws_test.cpp
new file mode 100644
index 0000000..2a8823a
--- /dev/null
+++ b/src/app/c/ws_test.cpp
@@ -0,0 +1,112 @@
+// Copyright (c) 2013, Matt Godbolt
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without 
+// modification, are permitted provided that the following conditions are met:
+// 
+// Redistributions of source code must retain the above copyright notice, this 
+// list of conditions and the following disclaimer.
+// 
+// Redistributions in binary form must reproduce the above copyright notice, 
+// this list of conditions and the following disclaimer in the documentation 
+// and/or other materials provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+// POSSIBILITY OF SUCH DAMAGE.
+
+// An extraordinarily simple test which presents a web page with some buttons.
+// Clicking on the numbered button increments the number, which is visible to
+// other connected clients.  WebSockets are used to do this: by the rather
+// suspicious means of sending raw JavaScript commands to be executed on other
+// clients.
+
+#include "seasocks/PrintfLogger.h"
+#include "seasocks/Server.h"
+#include "seasocks/StringUtil.h"
+#include "seasocks/WebSocket.h"
+#include "seasocks/util/Json.h"
+
+#include <cstring>
+#include <iostream>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+
+using namespace seasocks;
+using namespace std;
+
+class MyHandler: public WebSocket::Handler {
+public:
+    MyHandler(Server* server) : _server(server), _currentValue(0) {
+        setValue(1);
+    }
+
+    virtual void onConnect(WebSocket* connection) {
+        _connections.insert(connection);
+        connection->send(_currentSetValue.c_str());
+        cout << "Connected: " << connection->getRequestUri()
+                << " : " << formatAddress(connection->getRemoteAddress())
+                << endl;
+        cout << "Credentials: " << *(connection->credentials()) << endl;
+    }
+
+    virtual void onData(WebSocket* connection, const char* data) {
+        if (0 == strcmp("die", data)) {
+            _server->terminate();
+            return;
+        }
+        if (0 == strcmp("close", data)) {
+            cout << "Closing.." << endl;
+            connection->close();
+            cout << "Closed." << endl;
+            return;
+        }
+
+        int value = atoi(data) + 1;
+        if (value > _currentValue) {
+            setValue(value);
+            for (auto connection : _connections) {
+                connection->send(_currentSetValue.c_str());
+            }
+        }
+    }
+
+    virtual void onDisconnect(WebSocket* connection) {
+        _connections.erase(connection);
+        cout << "Disconnected: " << connection->getRequestUri()
+                << " : " << formatAddress(connection->getRemoteAddress())
+                << endl;
+    }
+
+private:
+    set<WebSocket*> _connections;
+    Server* _server;
+    int _currentValue;
+    string _currentSetValue;
+
+    void setValue(int value) {
+        _currentValue = value;
+        _currentSetValue = makeExecString("set", _currentValue);
+    }
+};
+
+int main(int argc, const char* argv[]) {
+    shared_ptr<Logger> logger(new PrintfLogger(Logger::DEBUG));
+
+    Server server(logger);
+
+    shared_ptr<MyHandler> handler(new MyHandler(&server));
+    server.addWebSocketHandler("/ws", handler);
+    server.serve("src/ws_test_web", 9090);
+    return 0;
+}
diff --git a/src/app/c/ws_test_poll.cpp b/src/app/c/ws_test_poll.cpp
new file mode 100644
index 0000000..fd5805e
--- /dev/null
+++ b/src/app/c/ws_test_poll.cpp
@@ -0,0 +1,170 @@
+// Copyright (c) 2013, Matt Godbolt
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// Redistributions of source code must retain the above copyright notice, this
+// list of conditions and the following disclaimer.
+//
+// Redistributions in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+// An extraordinarily simple test which presents a web page with some buttons.
+// Clicking on the numbered button increments the number, which is visible to
+// other connected clients.  WebSockets are used to do this: by the rather
+// suspicious means of sending raw JavaScript commands to be executed on other
+// clients.
+
+// Same as ws_test, but uses the poll() method and a separate epoll set to
+// demonstrate how Seasocks can be used with another polling system.
+
+#include "seasocks/PrintfLogger.h"
+#include "seasocks/Server.h"
+#include "seasocks/StringUtil.h"
+#include "seasocks/WebSocket.h"
+#include "seasocks/util/Json.h"
+
+#include <cstring>
+#include <iostream>
+#include <memory>
+#include <set>
+#include <sstream>
+#include <string>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/epoll.h>
+
+using namespace seasocks;
+using namespace std;
+
+class MyHandler: public WebSocket::Handler {
+public:
+    MyHandler(Server* server) : _server(server), _currentValue(0) {
+        setValue(1);
+    }
+
+    virtual void onConnect(WebSocket* connection) {
+        _connections.insert(connection);
+        connection->send(_currentSetValue.c_str());
+        cout << "Connected: " << connection->getRequestUri()
+                << " : " << formatAddress(connection->getRemoteAddress())
+                << endl;
+        cout << "Credentials: " << *(connection->credentials()) << endl;
+    }
+
+    virtual void onData(WebSocket* connection, const char* data) {
+        if (0 == strcmp("die", data)) {
+            _server->terminate();
+            return;
+        }
+        if (0 == strcmp("close", data)) {
+            cout << "Closing.." << endl;
+            connection->close();
+            cout << "Closed." << endl;
+            return;
+        }
+
+        int value = atoi(data) + 1;
+        if (value > _currentValue) {
+            setValue(value);
+            for (auto connection : _connections) {
+                connection->send(_currentSetValue.c_str());
+            }
+        }
+    }
+
+    virtual void onDisconnect(WebSocket* connection) {
+        _connections.erase(connection);
+        cout << "Disconnected: " << connection->getRequestUri()
+                << " : " << formatAddress(connection->getRemoteAddress())
+                << endl;
+    }
+
+private:
+    set<WebSocket*> _connections;
+    Server* _server;
+    int _currentValue;
+    string _currentSetValue;
+
+    void setValue(int value) {
+        _currentValue = value;
+        _currentSetValue = makeExecString("set", _currentValue);
+    }
+};
+
+int main(int argc, const char* argv[]) {
+    shared_ptr<Logger> logger(new PrintfLogger(Logger::DEBUG));
+
+    Server server(logger);
+
+    shared_ptr<MyHandler> handler(new MyHandler(&server));
+    server.addWebSocketHandler("/ws", handler);
+    server.setStaticPath("src/ws_test_web");
+    if (!server.startListening(9090)) {
+        cerr << "couldn't start listening" << endl;
+        return 1;
+    }
+    int myEpoll = epoll_create(10);
+    epoll_event wakeSeasocks = { EPOLLIN|EPOLLOUT|EPOLLERR, { &server } };
+    epoll_ctl(myEpoll, EPOLL_CTL_ADD, server.fd(), &wakeSeasocks);
+
+    // Also poll stdin
+    epoll_event wakeStdin = { EPOLLIN, { nullptr } };
+    epoll_ctl(myEpoll, EPOLL_CTL_ADD, STDIN_FILENO, &wakeStdin);
+    auto prevFlags = fcntl(STDIN_FILENO, F_GETFL, 0);
+    fcntl(STDIN_FILENO, F_SETFL, prevFlags | O_NONBLOCK);
+
+    cout << "Will echo anything typed in stdin: " << flush;
+    while (true) {
+        constexpr auto maxEvents = 2;
+        epoll_event events[maxEvents];
+        auto res = epoll_wait(myEpoll, events, maxEvents, -1);
+        if (res < 0) {
+            cerr << "epoll returned an error" << endl;
+            return 1;
+        }
+        for (auto i = 0; i < res; ++i) {
+            if (events[i].data.ptr == &server) {
+                auto seasocksResult = server.poll(0);
+                if (seasocksResult == Server::PollResult::Terminated) return 0;
+                if (seasocksResult == Server::PollResult::Error) return 1;
+            } else if (events[i].data.ptr == nullptr) {
+                // Echo stdin to stdout to show we can read from that too.
+                for (;;) {
+                    char buf[1024];
+                    auto numRead = ::read(STDIN_FILENO, buf, sizeof(buf));
+                    if (numRead < 0) {
+                        if (errno != EWOULDBLOCK && errno != EAGAIN) {
+                            cerr << "Error reading stdin" << endl;
+                            return 1;
+                        }
+                        break;
+                    } else if (numRead > 0) {
+                        auto written = write(STDOUT_FILENO, buf, numRead);
+                        if (written != numRead) {
+                            cerr << "Truncated write" << endl;
+                        }
+                    } else if (numRead == 0) {
+                        cerr << "EOF on stdin" << endl;
+                        return 0;
+                    }
+                }
+            }
+        }
+    }
+    return 0;
+}