diff options
Diffstat (limited to 'source4/librpc/ndr/ndr_basic.c')
| -rw-r--r-- | source4/librpc/ndr/ndr_basic.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/source4/librpc/ndr/ndr_basic.c b/source4/librpc/ndr/ndr_basic.c index 7f36f7e4ba..d015cc5e48 100644 --- a/source4/librpc/ndr/ndr_basic.c +++ b/source4/librpc/ndr/ndr_basic.c @@ -28,6 +28,31 @@ #define NDR_SSVAL(ndr, ofs, v) do { if (NDR_BE(ndr)) { RSSVAL(ndr->data,ofs,v); } else SSVAL(ndr->data,ofs,v); } while (0) #define NDR_SIVAL(ndr, ofs, v) do { if (NDR_BE(ndr)) { RSIVAL(ndr->data,ofs,v); } else SIVAL(ndr->data,ofs,v); } while (0) + +/* + check for data leaks from the server by looking for non-zero pad bytes + these could also indicate that real structure elements have been + mistaken for padding in the IDL +*/ +void ndr_check_padding(struct ndr_pull *ndr, size_t n) +{ + size_t ofs2 = (ndr->offset + (n-1)) & ~(n-1); + int i; + for (i=ndr->offset;i<ofs2;i++) { + if (ndr->data[i] != 0) { + break; + } + } + if (i<ofs2) { + DEBUG(0,("WARNING: Non-zero padding to %d: ", n)); + for (i=ndr->offset;i<ofs2;i++) { + DEBUG(0,("%02x ", ndr->data[i])); + } + DEBUG(0,("\n")); + } + +} + /* parse a uint8 */ |