diff options
| -rw-r--r-- | source4/librpc/ndr/ndr_compression.c | 140 |
1 files changed, 33 insertions, 107 deletions
diff --git a/source4/librpc/ndr/ndr_compression.c b/source4/librpc/ndr/ndr_compression.c index 7c2aca72e9..ad8dda1f6e 100644 --- a/source4/librpc/ndr/ndr_compression.c +++ b/source4/librpc/ndr/ndr_compression.c @@ -145,80 +145,6 @@ static enum ndr_err_code ndr_pull_compression_mszip_chunk(struct ndr_pull *ndrpu return NDR_ERR_SUCCESS; } -static enum ndr_err_code ndr_pull_compression_mszip(struct ndr_pull *subndr, - struct ndr_pull **_comndr, - ssize_t decompressed_len) -{ - struct ndr_push *ndrpush; - struct ndr_pull *comndr; - DATA_BLOB uncompressed; - uint32_t payload_header[4]; - uint32_t payload_size; - uint32_t payload_offset; - uint8_t *payload; - z_stream z; - bool last = false; - - ndrpush = ndr_push_init_ctx(subndr, subndr->iconv_convenience); - NDR_ERR_HAVE_NO_MEMORY(ndrpush); - - ZERO_STRUCT(z); - - while (!last) { - NDR_CHECK(ndr_pull_compression_mszip_chunk(subndr, ndrpush, &z, &last)); - } - - uncompressed = ndr_push_blob(ndrpush); - - if (uncompressed.length != decompressed_len) { - return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad MSZIP uncompressed_len [%u] != [%d] (PULL)", - (int)uncompressed.length, (int)decompressed_len); - } - - comndr = talloc_zero(subndr, struct ndr_pull); - NDR_ERR_HAVE_NO_MEMORY(comndr); - comndr->flags = subndr->flags; - comndr->current_mem_ctx = subndr->current_mem_ctx; - - comndr->data = uncompressed.data; - comndr->data_size = uncompressed.length; - comndr->offset = 0; - - comndr->iconv_convenience = talloc_reference(comndr, subndr->iconv_convenience); - - NDR_CHECK(ndr_pull_uint32(comndr, NDR_SCALARS, &payload_header[0])); - NDR_CHECK(ndr_pull_uint32(comndr, NDR_SCALARS, &payload_header[1])); - NDR_CHECK(ndr_pull_uint32(comndr, NDR_SCALARS, &payload_header[2])); - NDR_CHECK(ndr_pull_uint32(comndr, NDR_SCALARS, &payload_header[3])); - - if (payload_header[0] != 0x00081001) { - return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad MSZIP payload_header[0] [0x%08X] != [0x00081001] (PULL)", - payload_header[0]); - } - if (payload_header[1] != 0xCCCCCCCC) { - return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad MSZIP payload_header[1] [0x%08X] != [0xCCCCCCCC] (PULL)", - payload_header[1]); - } - - payload_size = payload_header[2]; - - if (payload_header[3] != 0x00000000) { - return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad MSZIP payload_header[3] [0x%08X] != [0x00000000] (PULL)", - payload_header[3]); - } - - payload_offset = comndr->offset; - NDR_CHECK(ndr_pull_advance(comndr, payload_size)); - payload = comndr->data + payload_offset; - - comndr->data = payload; - comndr->data_size = payload_size; - comndr->offset = 0; - - *_comndr = comndr; - return NDR_ERR_SUCCESS; -} - static enum ndr_err_code ndr_push_compression_mszip(struct ndr_push *subndr, struct ndr_push *comndr) { @@ -268,9 +194,20 @@ static enum ndr_err_code ndr_pull_compression_xpress_chunk(struct ndr_pull *ndrp return NDR_ERR_SUCCESS; } -static enum ndr_err_code ndr_pull_compression_xpress(struct ndr_pull *subndr, - struct ndr_pull **_comndr, - ssize_t decompressed_len) +static enum ndr_err_code ndr_push_compression_xpress(struct ndr_push *subndr, + struct ndr_push *comndr) +{ + return ndr_push_error(subndr, NDR_ERR_COMPRESSION, "XPRESS compression is not supported yet (PUSH)"); +} + +/* + handle compressed subcontext buffers, which in midl land are user-marshalled, but + we use magic in pidl to make them easier to cope with +*/ +enum ndr_err_code ndr_pull_compression_start(struct ndr_pull *subndr, + struct ndr_pull **_comndr, + enum ndr_compression_alg compression_alg, + ssize_t decompressed_len) { struct ndr_push *ndrpush; struct ndr_pull *comndr; @@ -280,18 +217,34 @@ static enum ndr_err_code ndr_pull_compression_xpress(struct ndr_pull *subndr, uint32_t payload_offset; uint8_t *payload; bool last = false; + z_stream z; ndrpush = ndr_push_init_ctx(subndr, subndr->iconv_convenience); NDR_ERR_HAVE_NO_MEMORY(ndrpush); - while (!last) { - NDR_CHECK(ndr_pull_compression_xpress_chunk(subndr, ndrpush, &last)); + switch (compression_alg) { + case NDR_COMPRESSION_MSZIP: + ZERO_STRUCT(z); + while (!last) { + NDR_CHECK(ndr_pull_compression_mszip_chunk(subndr, ndrpush, &z, &last)); + } + break; + + case NDR_COMPRESSION_XPRESS: + while (!last) { + NDR_CHECK(ndr_pull_compression_xpress_chunk(subndr, ndrpush, &last)); + } + break; + + default: + return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad compression algorithm %d (PULL)", + compression_alg); } uncompressed = ndr_push_blob(ndrpush); if (uncompressed.length != decompressed_len) { return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, - "Bad XPRESS uncompressed_len [%u] != [%u](0x%08X) (PULL)", + "Bad uncompressed_len [%u] != [%u](0x%08X) (PULL)", (int)uncompressed.length, (int)decompressed_len, (int)decompressed_len); @@ -344,33 +297,6 @@ static enum ndr_err_code ndr_pull_compression_xpress(struct ndr_pull *subndr, return NDR_ERR_SUCCESS; } -static enum ndr_err_code ndr_push_compression_xpress(struct ndr_push *subndr, - struct ndr_push *comndr) -{ - return ndr_push_error(subndr, NDR_ERR_COMPRESSION, "XPRESS compression is not supported yet (PUSH)"); -} - -/* - handle compressed subcontext buffers, which in midl land are user-marshalled, but - we use magic in pidl to make them easier to cope with -*/ -enum ndr_err_code ndr_pull_compression_start(struct ndr_pull *subndr, - struct ndr_pull **_comndr, - enum ndr_compression_alg compression_alg, - ssize_t decompressed_len) -{ - switch (compression_alg) { - case NDR_COMPRESSION_MSZIP: - return ndr_pull_compression_mszip(subndr, _comndr, decompressed_len); - case NDR_COMPRESSION_XPRESS: - return ndr_pull_compression_xpress(subndr, _comndr, decompressed_len); - default: - return ndr_pull_error(subndr, NDR_ERR_COMPRESSION, "Bad compression algorithm %d (PULL)", - compression_alg); - } - return NDR_ERR_SUCCESS; -} - enum ndr_err_code ndr_pull_compression_end(struct ndr_pull *subndr, struct ndr_pull *comndr, enum ndr_compression_alg compression_alg, |