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f8215ed343
Obviously it works fine, but we don't do it anywhere else. Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
#include "includes.h"
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#include "librpc/gen_ndr/ndr_claims.h"
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#include "librpc/ndr/ndr_claims.h"
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#include "librpc/ndr/ndr_compression.h"
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#include "lib/compression/lzxpress_huffman.h"
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enum ndr_compression_alg ndr_claims_compression_alg(enum CLAIMS_COMPRESSION_FORMAT wire_alg)
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{
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switch (wire_alg) {
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case CLAIMS_COMPRESSION_FORMAT_NONE:
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return NDR_COMPRESSION_NONE;
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case CLAIMS_COMPRESSION_FORMAT_LZNT1:
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return NDR_COMPRESSION_INVALID;
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case CLAIMS_COMPRESSION_FORMAT_XPRESS:
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return NDR_COMPRESSION_INVALID;
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case CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF:
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return NDR_COMPRESSION_XPRESS_HUFF_RAW;
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}
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return NDR_COMPRESSION_INVALID;
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}
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enum CLAIMS_COMPRESSION_FORMAT ndr_claims_actual_wire_compression_alg(enum CLAIMS_COMPRESSION_FORMAT specified_compression,
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size_t uncompressed_claims_size) {
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if (uncompressed_claims_size < CLAIM_UPPER_COMPRESSION_THRESHOLD) {
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return CLAIMS_COMPRESSION_FORMAT_NONE;
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}
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return specified_compression;
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}
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size_t ndr_claims_compressed_size(struct CLAIMS_SET_NDR *claims_set,
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enum CLAIMS_COMPRESSION_FORMAT wire_alg,
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int flags)
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{
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TALLOC_CTX *frame = NULL;
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DATA_BLOB tmp_blob;
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uint8_t * tmp_compressed;
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ssize_t compressed_size;
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enum ndr_err_code ndr_err;
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enum CLAIMS_COMPRESSION_FORMAT actual_wire_alg;
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if (claims_set == NULL) {
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return 0;
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}
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frame = talloc_stackframe();
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ndr_err = ndr_push_struct_blob(&tmp_blob,
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frame,
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claims_set,
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(ndr_push_flags_fn_t)ndr_push_CLAIMS_SET_NDR);
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if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
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DBG_ERR("Failed to push claims while determining compressed size\n");
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TALLOC_FREE(frame);
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return 0;
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}
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actual_wire_alg = ndr_claims_actual_wire_compression_alg(wire_alg,
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tmp_blob.length);
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switch (actual_wire_alg) {
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case CLAIMS_COMPRESSION_FORMAT_NONE:
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TALLOC_FREE(frame);
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return tmp_blob.length;
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case CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF:
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compressed_size = lzxpress_huffman_compress_talloc(frame,
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tmp_blob.data,
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tmp_blob.length,
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&tmp_compressed);
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TALLOC_FREE(frame);
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if (compressed_size < 0) {
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DBG_ERR("Failed to compress claims (for determining compressed size)\n");
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return 0;
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}
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return compressed_size;
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default:
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TALLOC_FREE(frame);
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DBG_ERR("Invalid chosen compression algorithm while determining compressed claim size\n");
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return 0;
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}
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}
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