+++ /dev/null
-#include <asn_application.h>
-#include <asn_internal.h>
-#include <per_decoder.h>
-
-/*
- * Decode a "Production of a complete encoding", X.691#10.1.
- * The complete encoding contains at least one byte, and is an integral
- * multiple of 8 bytes.
- */
-asn_dec_rval_t
-uper_decode_complete(const asn_codec_ctx_t *opt_codec_ctx,
- const asn_TYPE_descriptor_t *td, void **sptr,
- const void *buffer, size_t size) {
- asn_dec_rval_t rval;
-
- rval = uper_decode(opt_codec_ctx, td, sptr, buffer, size, 0, 0);
- if(rval.consumed) {
- /*
- * We've always given 8-aligned data,
- * so convert bits to integral bytes.
- */
- rval.consumed += 7;
- rval.consumed >>= 3;
- } else if(rval.code == RC_OK) {
- if(size) {
- if(((const uint8_t *)buffer)[0] == 0) {
- rval.consumed = 1; /* 1 byte */
- } else {
- ASN_DEBUG("Expecting single zeroed byte");
- rval.code = RC_FAIL;
- }
- } else {
- /* Must contain at least 8 bits. */
- rval.code = RC_WMORE;
- }
- }
-
- return rval;
-}
-
-asn_dec_rval_t
-uper_decode(const asn_codec_ctx_t *opt_codec_ctx,
- const asn_TYPE_descriptor_t *td, void **sptr, const void *buffer,
- size_t size, int skip_bits, int unused_bits) {
- asn_codec_ctx_t s_codec_ctx;
- asn_dec_rval_t rval;
- asn_per_data_t pd;
-
- if(skip_bits < 0 || skip_bits > 7
- || unused_bits < 0 || unused_bits > 7
- || (unused_bits > 0 && !size))
- ASN__DECODE_FAILED;
-
- /*
- * Stack checker requires that the codec context
- * must be allocated on the stack.
- */
- if(opt_codec_ctx) {
- if(opt_codec_ctx->max_stack_size) {
- s_codec_ctx = *opt_codec_ctx;
- opt_codec_ctx = &s_codec_ctx;
- }
- } else {
- /* If context is not given, be security-conscious anyway */
- memset(&s_codec_ctx, 0, sizeof(s_codec_ctx));
- s_codec_ctx.max_stack_size = ASN__DEFAULT_STACK_MAX;
- opt_codec_ctx = &s_codec_ctx;
- }
-
- /* Fill in the position indicator */
- memset(&pd, 0, sizeof(pd));
- pd.buffer = (const uint8_t *)buffer;
- pd.nboff = skip_bits;
- pd.nbits = 8 * size - unused_bits; /* 8 is CHAR_BIT from <limits.h> */
- if(pd.nboff > pd.nbits)
- ASN__DECODE_FAILED;
-
- /*
- * Invoke type-specific decoder.
- */
- if(!td->op->uper_decoder)
- ASN__DECODE_FAILED; /* PER is not compiled in */
- rval = td->op->uper_decoder(opt_codec_ctx, td, 0, sptr, &pd);
- if(rval.code == RC_OK) {
- /* Return the number of consumed bits */
- rval.consumed = ((pd.buffer - (const uint8_t *)buffer) << 3)
- + pd.nboff - skip_bits;
- ASN_DEBUG("PER decoding consumed %ld, counted %ld",
- (long)rval.consumed, (long)pd.moved);
- assert(rval.consumed == pd.moved);
- } else {
- /* PER codec is not a restartable */
- rval.consumed = 0;
- }
- return rval;
-}
-
-asn_dec_rval_t
-aper_decode_complete(const asn_codec_ctx_t *opt_codec_ctx,
- const asn_TYPE_descriptor_t *td, void **sptr,
- const void *buffer, size_t size) {
- asn_dec_rval_t rval;
-
- rval = aper_decode(opt_codec_ctx, td, sptr, buffer, size, 0, 0);
- if(rval.consumed) {
- /*
- * We've always given 8-aligned data,
- * so convert bits to integral bytes.
- */
- rval.consumed += 7;
- rval.consumed >>= 3;
- } else if(rval.code == RC_OK) {
- if(size) {
- if(((const uint8_t *)buffer)[0] == 0) {
- rval.consumed = 1; /* 1 byte */
- } else {
- ASN_DEBUG("Expecting single zeroed byte");
- rval.code = RC_FAIL;
- }
- } else {
- /* Must contain at least 8 bits. */
- rval.code = RC_WMORE;
- }
- }
-
- return rval;
-}
-
-asn_dec_rval_t
-aper_decode(const asn_codec_ctx_t *opt_codec_ctx,
- const asn_TYPE_descriptor_t *td, void **sptr, const void *buffer,
- size_t size, int skip_bits, int unused_bits) {
- asn_codec_ctx_t s_codec_ctx;
- asn_dec_rval_t rval;
- asn_per_data_t pd;
-
- if(skip_bits < 0 || skip_bits > 7
- || unused_bits < 0 || unused_bits > 7
- || (unused_bits > 0 && !size))
- ASN__DECODE_FAILED;
-
- /*
- * Stack checker requires that the codec context
- * must be allocated on the stack.
- */
- if(opt_codec_ctx) {
- if(opt_codec_ctx->max_stack_size) {
- s_codec_ctx = *opt_codec_ctx;
- opt_codec_ctx = &s_codec_ctx;
- }
- } else {
- /* If context is not given, be security-conscious anyway */
- memset(&s_codec_ctx, 0, sizeof(s_codec_ctx));
- s_codec_ctx.max_stack_size = ASN__DEFAULT_STACK_MAX;
- opt_codec_ctx = &s_codec_ctx;
- }
-
- /* Fill in the position indicator */
- memset(&pd, 0, sizeof(pd));
- pd.buffer = (const uint8_t *)buffer;
- pd.nboff = skip_bits;
- pd.nbits = 8 * size - unused_bits; /* 8 is CHAR_BIT from <limits.h> */
- if(pd.nboff > pd.nbits)
- ASN__DECODE_FAILED;
-
- /*
- * Invoke type-specific decoder.
- */
- if(!td->op->aper_decoder)
- ASN__DECODE_FAILED; /* PER is not compiled in */
- rval = td->op->aper_decoder(opt_codec_ctx, td, 0, sptr, &pd);
- if(rval.code == RC_OK) {
- /* Return the number of consumed bits */
- rval.consumed = ((pd.buffer - (const uint8_t *)buffer) << 3)
- + pd.nboff - skip_bits;
- ASN_DEBUG("PER decoding consumed %zu, counted %zu",
- rval.consumed, pd.moved);
- assert(rval.consumed == pd.moved);
- } else {
- /* PER codec is not a restartable */
- rval.consumed = 0;
- }
- return rval;
-}
-
Code Review / sim / e2-interface.git / blobdiff