initial/final commitHEADmaster

1 files changed, 504 insertions, 0 deletions

diff --git a/vmime-master/src/vmime/net/pop3/POP3Response.cpp b/vmime-master/src/vmime/net/pop3/POP3Response.cpp
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+++ b/vmime-master/src/vmime/net/pop3/POP3Response.cpp
@@ -0,0 +1,504 @@
+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 3 of
+// the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#include "vmime/config.hpp"
+
+
+#if VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_MESSAGING_PROTO_POP3
+
+
+#include "vmime/net/pop3/POP3Response.hpp"
+#include "vmime/net/pop3/POP3Connection.hpp"
+
+#include "vmime/platform.hpp"
+
+#include "vmime/utility/stringUtils.hpp"
+#include "vmime/utility/filteredStream.hpp"
+#include "vmime/utility/stringUtils.hpp"
+#include "vmime/utility/inputStreamSocketAdapter.hpp"
+
+#include "vmime/net/socket.hpp"
+#include "vmime/net/timeoutHandler.hpp"
+
+
+namespace vmime {
+namespace net {
+namespace pop3 {
+
+
+POP3Response::POP3Response(
+	const shared_ptr <socket>& sok,
+	const shared_ptr <timeoutHandler>& toh,
+	const shared_ptr <tracer>& tracer
+)
+	: m_socket(sok),
+	  m_timeoutHandler(toh),
+	  m_tracer(tracer) {
+
+}
+
+
+// static
+shared_ptr <POP3Response> POP3Response::readResponse(
+	const shared_ptr <POP3Connection>& conn
+) {
+
+	shared_ptr <POP3Response> resp = shared_ptr <POP3Response>(
+		new POP3Response(conn->getSocket(), conn->getTimeoutHandler(), conn->getTracer())
+	);
+
+	string buffer;
+	resp->readResponseImpl(buffer, /* multiLine */ false);
+
+	resp->m_firstLine = buffer;
+	resp->m_code = getResponseCode(buffer);
+	stripResponseCode(buffer, resp->m_text);
+
+	if (resp->m_tracer) {
+		resp->m_tracer->traceReceive(buffer);
+	}
+
+	return resp;
+}
+
+
+// static
+shared_ptr <POP3Response> POP3Response::readMultilineResponse(
+	const shared_ptr <POP3Connection>& conn
+) {
+
+	shared_ptr <POP3Response> resp = shared_ptr <POP3Response>(
+		new POP3Response(conn->getSocket(), conn->getTimeoutHandler(), conn->getTracer())
+	);
+
+	string buffer;
+	resp->readResponseImpl(buffer, /* multiLine */ true);
+
+	string firstLine, nextLines;
+	stripFirstLine(buffer, nextLines, &firstLine);
+
+	resp->m_firstLine = firstLine;
+	resp->m_code = getResponseCode(firstLine);
+	stripResponseCode(firstLine, resp->m_text);
+
+	std::istringstream iss(nextLines);
+	string line;
+
+	if (resp->m_tracer) {
+		resp->m_tracer->traceReceive(firstLine);
+	}
+
+	while (std::getline(iss, line, '\n')) {
+
+		line = utility::stringUtils::trim(line);
+		resp->m_lines.push_back(line);
+
+		if (resp->m_tracer) {
+			resp->m_tracer->traceReceive(line);
+		}
+	}
+
+	if (resp->m_tracer) {
+		resp->m_tracer->traceReceive(".");
+	}
+
+	return resp;
+}
+
+
+// static
+shared_ptr <POP3Response> POP3Response::readLargeResponse(
+	const shared_ptr <POP3Connection>& conn,
+	utility::outputStream& os,
+	utility::progressListener* progress,
+	const size_t predictedSize
+) {
+
+	shared_ptr <POP3Response> resp = shared_ptr <POP3Response>(
+		new POP3Response(conn->getSocket(), conn->getTimeoutHandler(), conn->getTracer())
+	);
+
+	string firstLine;
+	const size_t length = resp->readResponseImpl(firstLine, os, progress, predictedSize);
+
+	resp->m_firstLine = firstLine;
+	resp->m_code = getResponseCode(firstLine);
+	stripResponseCode(firstLine, resp->m_text);
+
+	if (resp->m_tracer) {
+		resp->m_tracer->traceReceive(firstLine);
+		resp->m_tracer->traceReceiveBytes(length - firstLine.length());
+		resp->m_tracer->traceReceive(".");
+	}
+
+	return resp;
+}
+
+
+bool POP3Response::isSuccess() const {
+
+	return m_code == CODE_OK;
+}
+
+
+const string POP3Response::getFirstLine() const {
+
+	return m_firstLine;
+}
+
+
+POP3Response::ResponseCode POP3Response::getCode() const {
+
+	return m_code;
+}
+
+
+const string POP3Response::getText() const {
+
+	return m_text;
+}
+
+
+const string POP3Response::getLineAt(const size_t pos) const {
+
+	return m_lines[pos];
+}
+
+
+size_t POP3Response::getLineCount() const {
+
+	return m_lines.size();
+}
+
+
+void POP3Response::readResponseImpl(string& buffer, const bool multiLine) {
+
+	bool foundTerminator = false;
+
+	if (m_timeoutHandler) {
+		m_timeoutHandler->resetTimeOut();
+	}
+
+	buffer.clear();
+
+	char last1 = '\0', last2 = '\0';
+
+	for ( ; !foundTerminator ; ) {
+
+		// Check whether the time-out delay is elapsed
+		if (m_timeoutHandler && m_timeoutHandler->isTimeOut()) {
+
+			if (!m_timeoutHandler->handleTimeOut()) {
+				throw exceptions::operation_timed_out();
+			}
+
+			m_timeoutHandler->resetTimeOut();
+		}
+
+		// Receive data from the socket
+		string receiveBuffer;
+		m_socket->receive(receiveBuffer);
+
+		if (receiveBuffer.empty()) {  // buffer is empty
+
+			if (m_socket->getStatus() & socket::STATUS_WANT_WRITE) {
+				m_socket->waitForWrite();
+			} else {
+				m_socket->waitForRead();
+			}
+
+			continue;
+		}
+
+		// We have received data: reset the time-out counter
+		if (m_timeoutHandler) {
+			m_timeoutHandler->resetTimeOut();
+		}
+
+		// Check for transparent characters: '\n..' becomes '\n.'
+		const char first = receiveBuffer[0];
+
+		if (first == '.' && last2 == '\n' && last1 == '.') {
+
+			receiveBuffer.erase(receiveBuffer.begin());
+
+		} else if (receiveBuffer.length() >= 2 && first == '.' &&
+		           receiveBuffer[1] == '.' && last1 == '\n') {
+
+			receiveBuffer.erase(receiveBuffer.begin());
+		}
+
+		for (size_t trans ;
+		     string::npos != (trans = receiveBuffer.find("\n..")) ; ) {
+
+			receiveBuffer.replace(trans, 3, "\n.");
+		}
+
+		last1 = receiveBuffer[receiveBuffer.length() - 1];
+		last2 = static_cast <char>((receiveBuffer.length() >= 2) ? receiveBuffer[receiveBuffer.length() - 2] : 0);
+
+		// Append the data to the response buffer
+		buffer += receiveBuffer;
+
+		// Check for terminator string (and strip it if present)
+		foundTerminator = checkTerminator(buffer, multiLine);
+
+		// If there is an error (-ERR) when executing a command that
+		// requires a multi-line response, the error response will
+		// include only one line, so we stop waiting for a multi-line
+		// terminator and check for a "normal" one.
+		if (multiLine &&
+		    !foundTerminator &&
+		    buffer.length() >= 4 && buffer[0] == '-') {
+
+			foundTerminator = checkTerminator(buffer, false);
+		}
+	}
+}
+
+
+size_t POP3Response::readResponseImpl(
+	string& firstLine,
+	utility::outputStream& os,
+	utility::progressListener* progress,
+	const size_t predictedSize
+) {
+
+	size_t current = 0, total = predictedSize;
+
+	string temp;
+	bool codeDone = false;
+
+	if (progress) {
+		progress->start(total);
+	}
+
+	if (m_timeoutHandler) {
+		m_timeoutHandler->resetTimeOut();
+	}
+
+	utility::inputStreamSocketAdapter sis(*m_socket);
+	utility::stopSequenceFilteredInputStream <5> sfis1(sis, "\r\n.\r\n");
+	utility::stopSequenceFilteredInputStream <3> sfis2(sfis1, "\n.\n");
+	utility::dotFilteredInputStream dfis(sfis2);   // "\n.." --> "\n."
+
+	utility::inputStream& is = dfis;
+
+	while (!is.eof()) {
+
+		// Check whether the time-out delay is elapsed
+		if (m_timeoutHandler && m_timeoutHandler->isTimeOut()) {
+
+			if (!m_timeoutHandler->handleTimeOut()) {
+				throw exceptions::operation_timed_out();
+			}
+		}
+
+		// Receive data from the socket
+		byte_t buffer[65536];
+		const size_t read = is.read(buffer, sizeof(buffer));
+
+		if (read == 0) {  // buffer is empty
+
+			if (m_socket->getStatus() & socket::STATUS_WANT_WRITE) {
+				m_socket->waitForWrite();
+			} else if (m_socket->getStatus() & socket::STATUS_WANT_READ) {
+				m_socket->waitForRead();
+			} else {
+				// Input stream needs more bytes to continue, but there
+				// is enough data into socket buffer. Do not waitForRead(),
+				// just retry read()ing on the stream.
+			}
+
+			continue;
+		}
+
+		// We have received data: reset the time-out counter
+		if (m_timeoutHandler) {
+			m_timeoutHandler->resetTimeOut();
+		}
+
+		// Notify progress
+		current += read;
+
+		if (progress) {
+			total = std::max(total, current);
+			progress->progress(current, total);
+		}
+
+		// If we don't have extracted the response code yet
+		if (!codeDone) {
+
+			vmime::utility::stringUtils::appendBytesToString(temp, buffer, read);
+
+			string responseData;
+
+			if (stripFirstLine(temp, responseData, &firstLine) == true) {
+
+				if (getResponseCode(firstLine) != CODE_OK) {
+					throw exceptions::command_error("?", firstLine);
+				}
+
+				codeDone = true;
+
+				os.write(responseData.data(), responseData.length());
+				temp.clear();
+
+				continue;
+			}
+
+		} else {
+
+			// Inject the data into the output stream
+			os.write(buffer, read);
+		}
+	}
+
+	if (progress) {
+		progress->stop(total);
+	}
+
+	return current;
+}
+
+
+// static
+bool POP3Response::stripFirstLine(
+	const string& buffer,
+	string& result,
+	string* firstLine
+) {
+
+	const size_t end = buffer.find('\n');
+
+	if (end != string::npos) {
+
+		if (firstLine) {
+			*firstLine = utility::stringUtils::trim(buffer.substr(0, end));
+		}
+
+		result = buffer.substr(end + 1);
+
+		return true;
+
+	} else {
+
+		if (firstLine) {
+			*firstLine = utility::stringUtils::trim(buffer);
+		}
+
+		result = "";
+
+		return false;
+	}
+}
+
+
+// static
+POP3Response::ResponseCode POP3Response::getResponseCode(const string& buffer) {
+
+	if (buffer.length() >= 2) {
+
+		// +[space]
+		if (buffer[0] == '+' &&
+		    (buffer[1] == ' ' || buffer[1] == '\t')) {
+
+			return CODE_READY;
+		}
+
+		// +OK
+		if (buffer.length() >= 3) {
+
+			if (buffer[0] == '+' &&
+			    (buffer[1] == 'O' || buffer[1] == 'o') &&
+			    (buffer[2] == 'K' || buffer[1] == 'k')) {
+
+				return CODE_OK;
+			}
+		}
+	}
+
+	// -ERR or whatever
+	return CODE_ERR;
+}
+
+
+// static
+void POP3Response::stripResponseCode(const string& buffer, string& result) {
+
+	const size_t pos = buffer.find_first_of(" \t");
+
+	if (pos != string::npos) {
+		result = buffer.substr(pos + 1);
+	} else {
+		result = buffer;
+	}
+}
+
+
+// static
+bool POP3Response::checkTerminator(string& buffer, const bool multiLine) {
+
+	// Multi-line response
+	if (multiLine) {
+
+		static const string term1("\r\n.\r\n");
+		static const string term2("\n.\n");
+
+		return checkOneTerminator(buffer, term1) ||
+		       checkOneTerminator(buffer, term2);
+
+	// Normal response
+	} else {
+
+		static const string term1("\r\n");
+		static const string term2("\n");
+
+		return checkOneTerminator(buffer, term1) ||
+		       checkOneTerminator(buffer, term2);
+	}
+
+	return false;
+}
+
+
+// static
+bool POP3Response::checkOneTerminator(string& buffer, const string& term) {
+
+	if (buffer.length() >= term.length() &&
+		std::equal(buffer.end() - term.length(), buffer.end(), term.begin())) {
+
+		buffer.erase(buffer.end() - term.length(), buffer.end());
+		return true;
+	}
+
+	return false;
+}
+
+
+} // pop3
+} // net
+} // vmime
+
+
+#endif // VMIME_HAVE_MESSAGING_FEATURES && VMIME_HAVE_MESSAGING_PROTO_POP3