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Reject network messages too small for the packet size field
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4825267537
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a9af8713bc
@ -246,9 +246,10 @@ void CNSocket::step() {
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if (readSize <= 0) {
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// we aren't reading a packet yet, try to start looking for one
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int recved = recv(sock, (buffer_t*)readBuffer, sizeof(int32_t), 0);
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if (recved == 0) {
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// the socket was closed normally
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if (recved >= 0 && recved < sizeof(int32_t)) {
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// too little data for readSize or the socket was closed normally (when 0 bytes were read)
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kill();
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return;
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} else if (!SOCKETERROR(recved)) {
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// we got our packet size!!!!
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readSize = *((int32_t*)readBuffer);
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@ -269,11 +270,12 @@ void CNSocket::step() {
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}
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if (readSize > 0 && readBufferIndex < readSize) {
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// read until the end of the packet! (or at least try too)
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// read until the end of the packet (or at least try to)
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int recved = recv(sock, (buffer_t*)(readBuffer + readBufferIndex), readSize - readBufferIndex, 0);
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if (recved == 0) {
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// the socket was closed normally
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kill();
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return;
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} else if (!SOCKETERROR(recved))
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readBufferIndex += recved;
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else if (OF_ERRNO != OF_EWOULD) {
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