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r11618: added a generic '32 bit length prefix' full packet helper to the packet code

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(This used to be commit b4dbe55105)
This commit is contained in:
Andrew Tridgell 2005-11-10 00:25:57 +00:00 committed by Gerald (Jerry) Carter
parent a684ff80b0
commit a9d0bf8045
2 changed files with 21 additions and 4 deletions
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21
source4/lib/stream/packet.c
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@ -388,16 +388,31 @@ NTSTATUS packet_send(struct packet_context *pc, DATA_BLOB blob)
/* /*
a full request checker for NBT formatted packets (first 3 bytes are length) a full request checker for NBT formatted packets (first 3 bytes are length)
*/ */
NTSTATUS packet_full_request_nbt(void *private, DATA_BLOB blob, size_t *packet_size) NTSTATUS packet_full_request_nbt(void *private, DATA_BLOB blob, size_t *size)
{ {
if (blob.length < 4) { if (blob.length < 4) {
return STATUS_MORE_ENTRIES; return STATUS_MORE_ENTRIES;
} }
*packet_size = 4 + smb_len(blob.data); *size = 4 + smb_len(blob.data);
if (*packet_size > blob.length) { if (*size > blob.length) {
return STATUS_MORE_ENTRIES; return STATUS_MORE_ENTRIES;
} }
return NT_STATUS_OK; return NT_STATUS_OK;
} }
/*
work out if a packet is complete for protocols that use a 32 bit network byte
order length
*/
NTSTATUS packet_full_request_u32(void *private, DATA_BLOB blob, size_t *size)
{
if (blob.length < 4) {
return STATUS_MORE_ENTRIES;
}
*size = 4 + RIVAL(blob.data, 0);
if (*size > blob.length) {
return STATUS_MORE_ENTRIES;
}
return NT_STATUS_OK;
}

4
source4/lib/stream/packet.h
View File

@ -46,5 +46,7 @@ void packet_queue_run(struct packet_context *pc);
/* /*
pre-canned handlers pre-canned handlers
*/ */
NTSTATUS packet_full_request_nbt(void *private, DATA_BLOB blob, size_t *packet_size); NTSTATUS packet_full_request_nbt(void *private, DATA_BLOB blob, size_t *size);
NTSTATUS packet_full_request_u32(void *private, DATA_BLOB blob, size_t *size);