static int send_one_packet(const char *packet_body, mbedtls_ssl_context *ssl) {
int ret, len;
unsigned char buf[10000];
plog("sending packet: '%s'", packet_body);
len = strlen(packet_body);
do {
ret = mbedtls_ssl_write(ssl, (unsigned char *)packet_body, len);
} while (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE);
if (ret < 0) {
plog("ERROR: mbedtls_ssl_write returned %d", ret);
return ret;
}
len = ret;
plog("%d bytes written: '%s'", len, packet_body);
if (strncmp("noreply", packet_body, 7) == 0) {
/* Outgoing packet begins with "noreply", so don't attempt to read a
* response from the server. Just return successfully. */
return 0;
}
plog("Read from server...");
len = sizeof(buf) - 1;
memset(buf, 0, sizeof(buf));
do {
ret = mbedtls_ssl_read(ssl, buf, len);
} while (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE);
if (ret <= 0) {
switch (ret) {
case MBEDTLS_ERR_SSL_TIMEOUT:
plog("ERROR: timeout");
return ret;
case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
plog("ERROR: connection was closed gracefully");
return ret;
default:
plog("ERROR: mbedtls_ssl_read returned -0x%x", -ret);
return ret;
}
}
len = ret;
plog("%d bytes read: '%s'", len, buf);
if (is_reverse(packet_body, (char *)buf)) {
return 0; /* Success */
}
return -1;
}
void judge ( char x, char y, bool &palindrome, bool &mirrored) { //1:palindrome 2:mirrored 3:neither
palindrome = ( x == y );
mirrored = is_reverse ( x, y );
}
