Method sendBasicAuth

HttpClient.cpp:226–273

}

void HttpClient::sendBasicAuth(const char* aUser, const char* aPassword)
{
    // Send the initial part of this header line
    iClient->print("Authorization: Basic ");
    // Now Base64 encode "aUser:aPassword" and send that
    // This seems trickier than it should be but it's mostly to avoid either
    // (a) some arbitrarily sized buffer which hopes to be big enough, or
    // (b) allocating and freeing memory
    // ...so we'll loop through 3 bytes at a time, outputting the results as we
    // go.
    // In Base64, each 3 bytes of unencoded data become 4 bytes of encoded data
    unsigned char input[3];
    unsigned char output[5]; // Leave space for a '\0' terminator so we can easily print
    int userLen = strlen(aUser);
    int passwordLen = strlen(aPassword);
    int inputOffset = 0;
    for (int i = 0; i < (userLen+1+passwordLen); i++)
    {
        // Copy the relevant input byte into the input
        if (i < userLen)
        {
            input[inputOffset++] = aUser[i];
        }
        else if (i == userLen)
        {
            input[inputOffset++] = ':';
        }
        else
        {
            input[inputOffset++] = aPassword[i-(userLen+1)];
        }
        // See if we've got a chunk to encode
        if ( (inputOffset == 3) || (i == userLen+passwordLen) )
        {
            // We've either got to a 3-byte boundary, or we've reached then end
            b64_encode(input, inputOffset, output, 4);
            // NUL-terminate the output string
            output[4] = '\0';
            // And write it out
            iClient->print((char*)output);
// FIXME We might want to fill output with '=' characters if b64_encode doesn't
// FIXME do it for us when we're encoding the final chunk
            inputOffset = 0;
        }
    }
    // And end the header we've sent
    iClient->println();
}

void HttpClient::finishHeaders()
{