Datasheet

API in C using winsock

stReadSentence = readSentence(fdSock);

DEBUG ? printSentence (&stReadSentence) : 0;

if (stReadSentence.iReturnValue != DONE)

{

printf("error.\n");

exit(0);

}

// extract md5 string from the challenge sentence

szMD5Challenge = strtok(stReadSentence.szSentence[1], "=");

szMD5Challenge = strtok(NULL, "=");

DEBUG ? printf("MD5 of challenge = %s\n", szMD5Challenge) : 0;

// convert szMD5Challenge to binary

szMD5ChallengeBinary = md5ToBinary(szMD5Challenge);

// get md5 of the password + challenge concatenation

md5_init(&state);

md5_append(&state, cNull, 1);

md5_append(&state, (const md5_byte_t *)password, strlen(password));

md5_append(&state, (const md5_byte_t *)szMD5ChallengeBinary, 16);

md5_finish(&state, digest);

// convert this digest to a string representation of the hex values

// digest is the binary format of what we want to send

// szMD5PasswordToSend is the "string" hex format

szMD5PasswordToSend = md5DigestToHexString(digest);

DEBUG ? printf("szPasswordToSend = %s\n", szMD5PasswordToSend) : 0;

// put together the login sentence

initializeSentence(&stWriteSentence);

addWordToSentence(&stWriteSentence, "/login");

addWordToSentence(&stWriteSentence, "=name=");

addPartWordToSentence(&stWriteSentence, username);

addWordToSentence(&stWriteSentence, "=response=00");

addPartWordToSentence(&stWriteSentence, szMD5PasswordToSend);

DEBUG ? printSentence(&stWriteSentence) : 0;

writeSentence(fdSock, &stWriteSentence);

stReadSentence = readSentence(fdSock);