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authorHowaner <franzi.moos@googlemail.com>2014-05-07 12:54:58 +0200
committerHowaner <franzi.moos@googlemail.com>2014-05-07 12:54:58 +0200
commitf5fe3682201e2f1356e3a5c408eb8296b542e072 (patch)
tree208ec7a760b9e909fbb43e1a12ee43d866cb9df7 /src/PolarSSL++/BlockingSslClientSocket.cpp
parentRemove old import (diff)
parentFixed wires powering wires diagonally below them (diff)
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Diffstat (limited to 'src/PolarSSL++/BlockingSslClientSocket.cpp')
-rw-r--r--src/PolarSSL++/BlockingSslClientSocket.cpp195
1 files changed, 195 insertions, 0 deletions
diff --git a/src/PolarSSL++/BlockingSslClientSocket.cpp b/src/PolarSSL++/BlockingSslClientSocket.cpp
new file mode 100644
index 000000000..699bc57ee
--- /dev/null
+++ b/src/PolarSSL++/BlockingSslClientSocket.cpp
@@ -0,0 +1,195 @@
+
+// BlockingSslClientSocket.cpp
+
+// Implements the cBlockingSslClientSocket class representing a blocking TCP socket with client SSL encryption over it
+
+#include "Globals.h"
+#include "BlockingSslClientSocket.h"
+
+
+
+
+
+cBlockingSslClientSocket::cBlockingSslClientSocket(void) :
+ m_Ssl(*this),
+ m_IsConnected(false)
+{
+ // Nothing needed yet
+}
+
+
+
+
+
+bool cBlockingSslClientSocket::Connect(const AString & a_ServerName, UInt16 a_Port)
+{
+ // If already connected, report an error:
+ if (m_IsConnected)
+ {
+ // TODO: Handle this better - if connected to the same server and port, and the socket is alive, return success
+ m_LastErrorText = "Already connected";
+ return false;
+ }
+
+ // Connect the underlying socket:
+ m_Socket.CreateSocket(cSocket::IPv4);
+ if (!m_Socket.ConnectIPv4(a_ServerName.c_str(), a_Port))
+ {
+ Printf(m_LastErrorText, "Socket connect failed: %s", m_Socket.GetLastErrorString().c_str());
+ return false;
+ }
+
+ // Initialize the SSL:
+ int ret = m_Ssl.Initialize(true);
+ if (ret != 0)
+ {
+ Printf(m_LastErrorText, "SSL initialization failed: -0x%x", -ret);
+ return false;
+ }
+
+ // If we have been assigned a trusted CA root cert store, push it into the SSL context:
+ if (m_CACerts.get() != NULL)
+ {
+ m_Ssl.SetCACerts(m_CACerts, m_ExpectedPeerName);
+ }
+
+ ret = m_Ssl.Handshake();
+ if (ret != 0)
+ {
+ Printf(m_LastErrorText, "SSL handshake failed: -0x%x", -ret);
+ return false;
+ }
+
+ m_IsConnected = true;
+ return true;
+}
+
+
+
+
+
+
+bool cBlockingSslClientSocket::SetTrustedRootCertsFromString(const AString & a_CACerts, const AString & a_ExpectedPeerName)
+{
+ // Warn if used multiple times, but don't signal an error:
+ if (m_CACerts.get() != NULL)
+ {
+ LOGWARNING(
+ "SSL: Trying to set multiple trusted CA root cert stores, only the last one will be used. Name: %s",
+ a_ExpectedPeerName.c_str()
+ );
+ }
+
+ // Parse the cert:
+ m_CACerts.reset(new cX509Cert);
+ int ret = m_CACerts->Parse(a_CACerts.data(), a_CACerts.size());
+ if (ret < 0)
+ {
+ Printf(m_LastErrorText, "CA cert parsing failed: -0x%x", -ret);
+ return false;
+ }
+ m_ExpectedPeerName = a_ExpectedPeerName;
+
+ return true;
+}
+
+
+
+
+
+bool cBlockingSslClientSocket::Send(const void * a_Data, size_t a_NumBytes)
+{
+ ASSERT(m_IsConnected);
+
+ // Keep sending the data until all of it is sent:
+ const char * Data = (const char *)a_Data;
+ size_t NumBytes = a_NumBytes;
+ for (;;)
+ {
+ int res = m_Ssl.WritePlain(a_Data, a_NumBytes);
+ if (res < 0)
+ {
+ ASSERT(res != POLARSSL_ERR_NET_WANT_READ); // This should never happen with callback-based SSL
+ ASSERT(res != POLARSSL_ERR_NET_WANT_WRITE); // This should never happen with callback-based SSL
+ Printf(m_LastErrorText, "Data cannot be written to SSL context: -0x%x", -res);
+ return false;
+ }
+ else
+ {
+ Data += res;
+ NumBytes -= res;
+ if (NumBytes == 0)
+ {
+ return true;
+ }
+ }
+ }
+}
+
+
+
+
+
+
+int cBlockingSslClientSocket::Receive(void * a_Data, size_t a_MaxBytes)
+{
+ ASSERT(m_IsConnected);
+
+ int res = m_Ssl.ReadPlain(a_Data, a_MaxBytes);
+ if (res < 0)
+ {
+ Printf(m_LastErrorText, "Data cannot be read form SSL context: -0x%x", -res);
+ }
+ return res;
+}
+
+
+
+
+
+void cBlockingSslClientSocket::Disconnect(void)
+{
+ // Ignore if not connected
+ if (!m_IsConnected)
+ {
+ return;
+ }
+
+ m_Ssl.NotifyClose();
+ m_Socket.CloseSocket();
+ m_IsConnected = false;
+}
+
+
+
+
+
+int cBlockingSslClientSocket::ReceiveEncrypted(unsigned char * a_Buffer, size_t a_NumBytes)
+{
+ int res = m_Socket.Receive((char *)a_Buffer, a_NumBytes, 0);
+ if (res < 0)
+ {
+ // PolarSSL's net routines distinguish between connection reset and general failure, we don't need to
+ return POLARSSL_ERR_NET_RECV_FAILED;
+ }
+ return res;
+}
+
+
+
+
+
+int cBlockingSslClientSocket::SendEncrypted(const unsigned char * a_Buffer, size_t a_NumBytes)
+{
+ int res = m_Socket.Send((const char *)a_Buffer, a_NumBytes);
+ if (res < 0)
+ {
+ // PolarSSL's net routines distinguish between connection reset and general failure, we don't need to
+ return POLARSSL_ERR_NET_SEND_FAILED;
+ }
+ return res;
+}
+
+
+
+