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Omit msgr_tls_record_hdr_t for non-tls data

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This commit is contained in:
Vitaliy Filippov
2026-04-17 21:22:47 +03:00
parent 5d65d87dfb
commit a6b29a01a2
2 changed files with 33 additions and 83 deletions
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src/client/msgr_receive.cpp
+33 -63
View File
@@ -106,41 +106,37 @@ public:
from = cl->read_op_pos;
}
void buffer_encrypted()
bool buffer_encrypted()
{
while (done < bufsize)
if (cl->ssl_read_record_size < sizeof(msgr_tls_record_hdr_t))
{
if (cl->ssl_read_record_size < sizeof(msgr_tls_record_hdr_t))
{
size_t n = bufsize-done;
if (n > sizeof(msgr_tls_record_hdr_t)-cl->ssl_read_record_size)
n = sizeof(msgr_tls_record_hdr_t)-cl->ssl_read_record_size;
memcpy(((uint8_t*)&cl->ssl_read_record) + cl->ssl_read_record_size, curbuf+done, n);
done += n;
cl->ssl_read_record_size += n;
if (done >= bufsize)
return;
}
if (cl->ssl_read_record.encrypted)
{
size_t n = cl->ssl_read_record.size;
if (n > bufsize-done)
n = bufsize-done;
// Buffer all encrypted data
// FIXME Limit the amount of buffered data
int r = BIO_write(cl->write_to_ssl, curbuf+done, n);
assert(r == n);
done += n;
cl->ssl_read_record.size -= n;
if (!cl->ssl_read_record.size)
cl->ssl_read_record_size = 0;
}
else
{
// Unencrypted data
break;
}
size_t n = bufsize-done;
if (n > sizeof(msgr_tls_record_hdr_t)-cl->ssl_read_record_size)
n = sizeof(msgr_tls_record_hdr_t)-cl->ssl_read_record_size;
memcpy(((uint8_t*)&cl->ssl_read_record) + cl->ssl_read_record_size, curbuf+done, n);
done += n;
cl->ssl_read_record_size += n;
if (done >= bufsize)
return true;
}
if (cl->ssl_read_record.encrypted != 1)
{
fprintf(stderr, "Client %ju got record with unknown type %u\n", cl->ssl_read_record.encrypted);
cl->io_error = true;
return false;
}
size_t n = cl->ssl_read_record.size;
if (n > bufsize-done)
n = bufsize-done;
// Buffer all encrypted data
// FIXME Limit the amount of buffered data
int r = BIO_write(cl->write_to_ssl, curbuf+done, n);
assert(r == n);
done += n;
cl->ssl_read_record.size -= n;
if (!cl->ssl_read_record.size)
cl->ssl_read_record_size = 0;
return true;
}
bool read(uint8_t *dst, size_t dst_len, int flags) override
@@ -154,21 +150,12 @@ public:
size_t n = dst_len-from;
if (!(flags & RDR_TLS) || !cl->ssl_cli)
{
if (cl->ssl_cli && (cl->ssl_read_record_size < sizeof(msgr_tls_record_hdr_t) ||
cl->ssl_read_record.size < n || cl->ssl_read_record.encrypted))
{
fprintf(stderr, "Client %ju non-TLS data is too short, disconnecting\n", cl->client_id);
cl->io_error = true;
return false;
}
if (n > bufsize-done)
n = bufsize-done;
if (flags & RDR_XTS)
{
size_t prev = done;
msgr->op_decrypted_copy_buf(cl, curbuf, bufsize, dst, dst_len, from, done);
n = 0;
cl->ssl_read_record.size -= (done-prev);
}
else
{
@@ -181,16 +168,14 @@ public:
if (dst != NULL)
memcpy(dst+from, curbuf+done, n);
done += n;
cl->ssl_read_record.size -= n;
}
if (!cl->ssl_read_record.size)
cl->ssl_read_record_size = 0;
}
else
{
// Here, dst == NULL is not allowed
assert(dst != NULL);
buffer_encrypted();
if (!buffer_encrypted())
return false;
if (!cl->ssl_handshake_done)
{
if (!msgr->ssl_do_handshake(cl))
@@ -317,25 +302,10 @@ public:
cl->read_op_pos = cl->read_op_inline_decrypt_in + OSD_PACKET_SIZE + cl->read_op->reply.rw.bitmap_len;
from = cl->read_op_inline_decrypt_in;
}
if (cl->ssl_cli)
{
if (cl->ssl_read_record_size < sizeof(msgr_tls_record_hdr_t))
{
return false;
}
if (cl->ssl_read_record.size < dst_len-from || cl->ssl_read_record.encrypted)
{
fprintf(stderr, "Client %ju non-TLS data is too short, disconnecting\n", cl->client_id);
cl->io_error = true;
return false;
}
cl->ssl_read_record.size -= (dst_len-from);
if (!cl->ssl_read_record.size)
cl->ssl_read_record_size = 0;
}
cl->recv_list.push_back((iovec){ dst+from, dst_len-from });
size_t n = dst_len-from;
cl->recv_list.push_back((iovec){ dst+from, n });
cl->recv_flags.push_back(flags);
cl->read_op_pos += dst_len-from;
cl->read_op_pos += n;
from = 0;
return true;
}