Merge "Refactor asn1_decoder functions into a class."
This commit is contained in:
Tao Bao
Gerrit Code Review
commit
ea3d0b923d
4 changed files with 323 additions and 372 deletions
255
asn1_decoder.cpp
255
asn1_decoder.cpp
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@ -14,178 +14,145 @@
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* limitations under the License.
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*/
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#include <malloc.h>
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#include <stdint.h>
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#include <string.h>
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#include "asn1_decoder.h"
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#include <stdint.h>
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typedef struct asn1_context {
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size_t length;
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const uint8_t* p;
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int app_type;
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} asn1_context_t;
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static const int kMaskConstructed = 0xE0;
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static const int kMaskTag = 0x7F;
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static const int kMaskAppType = 0x1F;
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static const int kTagOctetString = 0x04;
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static const int kTagOid = 0x06;
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static const int kTagSequence = 0x30;
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static const int kTagSet = 0x31;
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static const int kTagConstructed = 0xA0;
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asn1_context_t* asn1_context_new(const uint8_t* buffer, size_t length) {
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asn1_context_t* ctx = (asn1_context_t*) calloc(1, sizeof(asn1_context_t));
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if (ctx == NULL) {
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return NULL;
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}
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ctx->p = buffer;
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ctx->length = length;
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return ctx;
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int asn1_context::peek_byte() const {
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if (length_ <= 0) {
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return -1;
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}
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return *p_;
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}
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void asn1_context_free(asn1_context_t* ctx) {
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free(ctx);
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int asn1_context::get_byte() {
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if (length_ <= 0) {
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return -1;
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}
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int byte = *p_;
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p_++;
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length_--;
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return byte;
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}
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static inline int peek_byte(asn1_context_t* ctx) {
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if (ctx->length <= 0) {
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return -1;
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}
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return *ctx->p;
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bool asn1_context::skip_bytes(size_t num_skip) {
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if (length_ < num_skip) {
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return false;
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}
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p_ += num_skip;
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length_ -= num_skip;
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return true;
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}
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static inline int get_byte(asn1_context_t* ctx) {
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if (ctx->length <= 0) {
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return -1;
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}
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int byte = *ctx->p;
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ctx->p++;
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ctx->length--;
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return byte;
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}
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static inline bool skip_bytes(asn1_context_t* ctx, size_t num_skip) {
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if (ctx->length < num_skip) {
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return false;
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}
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ctx->p += num_skip;
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ctx->length -= num_skip;
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bool asn1_context::decode_length(size_t* out_len) {
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int num_octets = get_byte();
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if (num_octets == -1) {
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return false;
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}
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if ((num_octets & 0x80) == 0x00) {
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*out_len = num_octets;
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return true;
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}
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static bool decode_length(asn1_context_t* ctx, size_t* out_len) {
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int num_octets = get_byte(ctx);
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if (num_octets == -1) {
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return false;
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}
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num_octets &= kMaskTag;
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if (static_cast<size_t>(num_octets) >= sizeof(size_t)) {
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return false;
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}
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size_t length = 0;
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for (int i = 0; i < num_octets; ++i) {
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int byte = get_byte();
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if (byte == -1) {
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return false;
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}
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if ((num_octets & 0x80) == 0x00) {
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*out_len = num_octets;
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return 1;
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}
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num_octets &= kMaskTag;
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if ((size_t)num_octets >= sizeof(size_t)) {
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return false;
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}
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size_t length = 0;
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for (int i = 0; i < num_octets; ++i) {
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int byte = get_byte(ctx);
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if (byte == -1) {
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return false;
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}
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length <<= 8;
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length += byte;
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}
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*out_len = length;
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return true;
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length <<= 8;
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length += byte;
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}
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*out_len = length;
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return true;
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}
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/**
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* Returns the constructed type and advances the pointer. E.g. A0 -> 0
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*/
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asn1_context_t* asn1_constructed_get(asn1_context_t* ctx) {
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int type = get_byte(ctx);
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if (type == -1 || (type & kMaskConstructed) != kTagConstructed) {
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return NULL;
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}
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asn1_context* asn1_context::asn1_constructed_get() {
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int type = get_byte();
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if (type == -1 || (type & kMaskConstructed) != kTagConstructed) {
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return nullptr;
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}
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size_t length;
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if (!decode_length(&length) || length > length_) {
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return nullptr;
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}
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asn1_context* app_ctx = new asn1_context(p_, length);
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app_ctx->app_type_ = type & kMaskAppType;
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return app_ctx;
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}
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bool asn1_context::asn1_constructed_skip_all() {
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int byte = peek_byte();
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while (byte != -1 && (byte & kMaskConstructed) == kTagConstructed) {
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skip_bytes(1);
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size_t length;
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if (!decode_length(ctx, &length) || length > ctx->length) {
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return NULL;
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if (!decode_length(&length) || !skip_bytes(length)) {
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return false;
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}
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asn1_context_t* app_ctx = asn1_context_new(ctx->p, length);
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app_ctx->app_type = type & kMaskAppType;
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return app_ctx;
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byte = peek_byte();
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}
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return byte != -1;
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}
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bool asn1_constructed_skip_all(asn1_context_t* ctx) {
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int byte = peek_byte(ctx);
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while (byte != -1 && (byte & kMaskConstructed) == kTagConstructed) {
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skip_bytes(ctx, 1);
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size_t length;
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if (!decode_length(ctx, &length) || !skip_bytes(ctx, length)) {
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return false;
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}
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byte = peek_byte(ctx);
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}
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return byte != -1;
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int asn1_context::asn1_constructed_type() const {
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return app_type_;
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}
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int asn1_constructed_type(asn1_context_t* ctx) {
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return ctx->app_type;
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asn1_context* asn1_context::asn1_sequence_get() {
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if ((get_byte() & kMaskTag) != kTagSequence) {
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return nullptr;
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}
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size_t length;
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if (!decode_length(&length) || length > length_) {
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return nullptr;
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}
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return new asn1_context(p_, length);
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}
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asn1_context_t* asn1_sequence_get(asn1_context_t* ctx) {
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if ((get_byte(ctx) & kMaskTag) != kTagSequence) {
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return NULL;
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}
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size_t length;
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if (!decode_length(ctx, &length) || length > ctx->length) {
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return NULL;
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}
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return asn1_context_new(ctx->p, length);
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asn1_context* asn1_context::asn1_set_get() {
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if ((get_byte() & kMaskTag) != kTagSet) {
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return nullptr;
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}
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size_t length;
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if (!decode_length(&length) || length > length_) {
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return nullptr;
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}
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return new asn1_context(p_, length);
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}
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asn1_context_t* asn1_set_get(asn1_context_t* ctx) {
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if ((get_byte(ctx) & kMaskTag) != kTagSet) {
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return NULL;
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}
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size_t length;
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if (!decode_length(ctx, &length) || length > ctx->length) {
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return NULL;
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}
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return asn1_context_new(ctx->p, length);
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bool asn1_context::asn1_sequence_next() {
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size_t length;
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if (get_byte() == -1 || !decode_length(&length) || !skip_bytes(length)) {
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return false;
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}
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return true;
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}
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bool asn1_sequence_next(asn1_context_t* ctx) {
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size_t length;
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if (get_byte(ctx) == -1 || !decode_length(ctx, &length) || !skip_bytes(ctx, length)) {
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return false;
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}
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return true;
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bool asn1_context::asn1_oid_get(const uint8_t** oid, size_t* length) {
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if (get_byte() != kTagOid) {
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return false;
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}
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if (!decode_length(length) || *length == 0 || *length > length_) {
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return false;
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}
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*oid = p_;
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return true;
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}
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bool asn1_oid_get(asn1_context_t* ctx, const uint8_t** oid, size_t* length) {
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if (get_byte(ctx) != kTagOid) {
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return false;
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}
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if (!decode_length(ctx, length) || *length == 0 || *length > ctx->length) {
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return false;
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}
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*oid = ctx->p;
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return true;
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}
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bool asn1_octet_string_get(asn1_context_t* ctx, const uint8_t** octet_string, size_t* length) {
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if (get_byte(ctx) != kTagOctetString) {
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return false;
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}
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if (!decode_length(ctx, length) || *length == 0 || *length > ctx->length) {
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return false;
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}
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*octet_string = ctx->p;
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return true;
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bool asn1_context::asn1_octet_string_get(const uint8_t** octet_string, size_t* length) {
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if (get_byte() != kTagOctetString) {
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return false;
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}
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if (!decode_length(length) || *length == 0 || *length > length_) {
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return false;
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}
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*octet_string = p_;
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return true;
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}
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@ -14,23 +14,42 @@
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* limitations under the License.
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*/
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#ifndef ASN1_DECODER_H_
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#define ASN1_DECODER_H_
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#include <stdint.h>
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typedef struct asn1_context asn1_context_t;
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class asn1_context {
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public:
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asn1_context(const uint8_t* buffer, size_t length) : p_(buffer), length_(length), app_type_(0) {}
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int asn1_constructed_type() const;
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asn1_context* asn1_constructed_get();
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bool asn1_constructed_skip_all();
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asn1_context* asn1_sequence_get();
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asn1_context* asn1_set_get();
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bool asn1_sequence_next();
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bool asn1_oid_get(const uint8_t** oid, size_t* length);
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bool asn1_octet_string_get(const uint8_t** octet_string, size_t* length);
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asn1_context_t* asn1_context_new(const uint8_t* buffer, size_t length);
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void asn1_context_free(asn1_context_t* ctx);
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asn1_context_t* asn1_constructed_get(asn1_context_t* ctx);
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bool asn1_constructed_skip_all(asn1_context_t* ctx);
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int asn1_constructed_type(asn1_context_t* ctx);
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asn1_context_t* asn1_sequence_get(asn1_context_t* ctx);
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asn1_context_t* asn1_set_get(asn1_context_t* ctx);
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bool asn1_sequence_next(asn1_context_t* seq);
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bool asn1_oid_get(asn1_context_t* ctx, const uint8_t** oid, size_t* length);
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bool asn1_octet_string_get(asn1_context_t* ctx, const uint8_t** octet_string, size_t* length);
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private:
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static constexpr int kMaskConstructed = 0xE0;
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static constexpr int kMaskTag = 0x7F;
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static constexpr int kMaskAppType = 0x1F;
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static constexpr int kTagOctetString = 0x04;
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static constexpr int kTagOid = 0x06;
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static constexpr int kTagSequence = 0x30;
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static constexpr int kTagSet = 0x31;
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static constexpr int kTagConstructed = 0xA0;
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int peek_byte() const;
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int get_byte();
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bool skip_bytes(size_t num_skip);
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bool decode_length(size_t* out_len);
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const uint8_t* p_;
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size_t length_;
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int app_type_;
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};
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#endif /* ASN1_DECODER_H_ */
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@ -14,225 +14,188 @@
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* limitations under the License.
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*/
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#define LOG_TAG "asn1_decoder_test"
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#include <cutils/log.h>
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#include <gtest/gtest.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <memory>
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#include <gtest/gtest.h>
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#include "asn1_decoder.h"
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namespace android {
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TEST(Asn1DecoderTest, Empty_Failure) {
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uint8_t empty[] = {};
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asn1_context ctx(empty, sizeof(empty));
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class Asn1DecoderTest : public testing::Test {
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};
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ASSERT_EQ(nullptr, ctx.asn1_constructed_get());
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ASSERT_FALSE(ctx.asn1_constructed_skip_all());
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ASSERT_EQ(0, ctx.asn1_constructed_type());
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ASSERT_EQ(nullptr, ctx.asn1_sequence_get());
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ASSERT_EQ(nullptr, ctx.asn1_set_get());
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ASSERT_FALSE(ctx.asn1_sequence_next());
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TEST_F(Asn1DecoderTest, Empty_Failure) {
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uint8_t empty[] = { };
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asn1_context_t* ctx = asn1_context_new(empty, sizeof(empty));
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EXPECT_EQ(NULL, asn1_constructed_get(ctx));
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EXPECT_FALSE(asn1_constructed_skip_all(ctx));
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EXPECT_EQ(0, asn1_constructed_type(ctx));
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EXPECT_EQ(NULL, asn1_sequence_get(ctx));
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EXPECT_EQ(NULL, asn1_set_get(ctx));
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EXPECT_FALSE(asn1_sequence_next(ctx));
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const uint8_t* junk;
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size_t length;
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EXPECT_FALSE(asn1_oid_get(ctx, &junk, &length));
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EXPECT_FALSE(asn1_octet_string_get(ctx, &junk, &length));
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asn1_context_free(ctx);
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const uint8_t* junk;
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size_t length;
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ASSERT_FALSE(ctx.asn1_oid_get(&junk, &length));
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ASSERT_FALSE(ctx.asn1_octet_string_get(&junk, &length));
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}
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TEST_F(Asn1DecoderTest, ConstructedGet_TruncatedLength_Failure) {
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uint8_t truncated[] = { 0xA0, 0x82, };
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asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
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EXPECT_EQ(NULL, asn1_constructed_get(ctx));
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asn1_context_free(ctx);
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TEST(Asn1DecoderTest, ConstructedGet_TruncatedLength_Failure) {
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uint8_t truncated[] = { 0xA0, 0x82 };
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asn1_context ctx(truncated, sizeof(truncated));
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ASSERT_EQ(nullptr, ctx.asn1_constructed_get());
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}
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TEST_F(Asn1DecoderTest, ConstructedGet_LengthTooBig_Failure) {
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uint8_t truncated[] = { 0xA0, 0x8a, 0xA5, 0x5A, 0xA5, 0x5A,
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0xA5, 0x5A, 0xA5, 0x5A, 0xA5, 0x5A, };
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asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
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EXPECT_EQ(NULL, asn1_constructed_get(ctx));
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asn1_context_free(ctx);
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TEST(Asn1DecoderTest, ConstructedGet_LengthTooBig_Failure) {
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uint8_t truncated[] = { 0xA0, 0x8a, 0xA5, 0x5A, 0xA5, 0x5A, 0xA5, 0x5A, 0xA5, 0x5A, 0xA5, 0x5A };
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asn1_context ctx(truncated, sizeof(truncated));
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ASSERT_EQ(nullptr, ctx.asn1_constructed_get());
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}
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TEST_F(Asn1DecoderTest, ConstructedGet_TooSmallForChild_Failure) {
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uint8_t data[] = { 0xA5, 0x02, 0x06, 0x01, 0x01, };
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asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
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asn1_context_t* ptr = asn1_constructed_get(ctx);
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ASSERT_NE((asn1_context_t*)NULL, ptr);
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EXPECT_EQ(5, asn1_constructed_type(ptr));
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const uint8_t* oid;
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size_t length;
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EXPECT_FALSE(asn1_oid_get(ptr, &oid, &length));
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asn1_context_free(ptr);
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asn1_context_free(ctx);
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TEST(Asn1DecoderTest, ConstructedGet_TooSmallForChild_Failure) {
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uint8_t data[] = { 0xA5, 0x02, 0x06, 0x01, 0x01 };
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asn1_context ctx(data, sizeof(data));
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std::unique_ptr<asn1_context> ptr(ctx.asn1_constructed_get());
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ASSERT_NE(nullptr, ptr);
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ASSERT_EQ(5, ptr->asn1_constructed_type());
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const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ptr->asn1_oid_get(&oid, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, ConstructedGet_Success) {
|
||||
uint8_t data[] = { 0xA5, 0x03, 0x06, 0x01, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
asn1_context_t* ptr = asn1_constructed_get(ctx);
|
||||
ASSERT_NE((asn1_context_t*)NULL, ptr);
|
||||
EXPECT_EQ(5, asn1_constructed_type(ptr));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(asn1_oid_get(ptr, &oid, &length));
|
||||
EXPECT_EQ(1U, length);
|
||||
EXPECT_EQ(0x01U, *oid);
|
||||
asn1_context_free(ptr);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, ConstructedGet_Success) {
|
||||
uint8_t data[] = { 0xA5, 0x03, 0x06, 0x01, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
std::unique_ptr<asn1_context> ptr(ctx.asn1_constructed_get());
|
||||
ASSERT_NE(nullptr, ptr);
|
||||
ASSERT_EQ(5, ptr->asn1_constructed_type());
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(ptr->asn1_oid_get(&oid, &length));
|
||||
ASSERT_EQ(1U, length);
|
||||
ASSERT_EQ(0x01U, *oid);
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, ConstructedSkipAll_TruncatedLength_Failure) {
|
||||
uint8_t truncated[] = { 0xA2, 0x82, };
|
||||
asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
|
||||
EXPECT_FALSE(asn1_constructed_skip_all(ctx));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, ConstructedSkipAll_TruncatedLength_Failure) {
|
||||
uint8_t truncated[] = { 0xA2, 0x82 };
|
||||
asn1_context ctx(truncated, sizeof(truncated));
|
||||
ASSERT_FALSE(ctx.asn1_constructed_skip_all());
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, ConstructedSkipAll_Success) {
|
||||
uint8_t data[] = { 0xA0, 0x03, 0x02, 0x01, 0x01,
|
||||
0xA1, 0x03, 0x02, 0x01, 0x01,
|
||||
0x06, 0x01, 0xA5, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
ASSERT_TRUE(asn1_constructed_skip_all(ctx));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(asn1_oid_get(ctx, &oid, &length));
|
||||
EXPECT_EQ(1U, length);
|
||||
EXPECT_EQ(0xA5U, *oid);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, ConstructedSkipAll_Success) {
|
||||
uint8_t data[] = { 0xA0, 0x03, 0x02, 0x01, 0x01, 0xA1, 0x03, 0x02, 0x01, 0x01, 0x06, 0x01, 0xA5 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
ASSERT_TRUE(ctx.asn1_constructed_skip_all());
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(ctx.asn1_oid_get(&oid, &length));
|
||||
ASSERT_EQ(1U, length);
|
||||
ASSERT_EQ(0xA5U, *oid);
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, SequenceGet_TruncatedLength_Failure) {
|
||||
uint8_t truncated[] = { 0x30, 0x82, };
|
||||
asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
|
||||
EXPECT_EQ(NULL, asn1_sequence_get(ctx));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, SequenceGet_TruncatedLength_Failure) {
|
||||
uint8_t truncated[] = { 0x30, 0x82 };
|
||||
asn1_context ctx(truncated, sizeof(truncated));
|
||||
ASSERT_EQ(nullptr, ctx.asn1_sequence_get());
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, SequenceGet_TooSmallForChild_Failure) {
|
||||
uint8_t data[] = { 0x30, 0x02, 0x06, 0x01, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
asn1_context_t* ptr = asn1_sequence_get(ctx);
|
||||
ASSERT_NE((asn1_context_t*)NULL, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
EXPECT_FALSE(asn1_oid_get(ptr, &oid, &length));
|
||||
asn1_context_free(ptr);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, SequenceGet_TooSmallForChild_Failure) {
|
||||
uint8_t data[] = { 0x30, 0x02, 0x06, 0x01, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
std::unique_ptr<asn1_context> ptr(ctx.asn1_sequence_get());
|
||||
ASSERT_NE(nullptr, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ptr->asn1_oid_get(&oid, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, SequenceGet_Success) {
|
||||
uint8_t data[] = { 0x30, 0x03, 0x06, 0x01, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
asn1_context_t* ptr = asn1_sequence_get(ctx);
|
||||
ASSERT_NE((asn1_context_t*)NULL, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(asn1_oid_get(ptr, &oid, &length));
|
||||
EXPECT_EQ(1U, length);
|
||||
EXPECT_EQ(0x01U, *oid);
|
||||
asn1_context_free(ptr);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, SequenceGet_Success) {
|
||||
uint8_t data[] = { 0x30, 0x03, 0x06, 0x01, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
std::unique_ptr<asn1_context> ptr(ctx.asn1_sequence_get());
|
||||
ASSERT_NE(nullptr, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(ptr->asn1_oid_get(&oid, &length));
|
||||
ASSERT_EQ(1U, length);
|
||||
ASSERT_EQ(0x01U, *oid);
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, SetGet_TruncatedLength_Failure) {
|
||||
uint8_t truncated[] = { 0x31, 0x82, };
|
||||
asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
|
||||
EXPECT_EQ(NULL, asn1_set_get(ctx));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, SetGet_TruncatedLength_Failure) {
|
||||
uint8_t truncated[] = { 0x31, 0x82 };
|
||||
asn1_context ctx(truncated, sizeof(truncated));
|
||||
ASSERT_EQ(nullptr, ctx.asn1_set_get());
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, SetGet_TooSmallForChild_Failure) {
|
||||
uint8_t data[] = { 0x31, 0x02, 0x06, 0x01, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
asn1_context_t* ptr = asn1_set_get(ctx);
|
||||
ASSERT_NE((asn1_context_t*)NULL, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
EXPECT_FALSE(asn1_oid_get(ptr, &oid, &length));
|
||||
asn1_context_free(ptr);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, SetGet_TooSmallForChild_Failure) {
|
||||
uint8_t data[] = { 0x31, 0x02, 0x06, 0x01, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
std::unique_ptr<asn1_context> ptr(ctx.asn1_set_get());
|
||||
ASSERT_NE(nullptr, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ptr->asn1_oid_get(&oid, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, SetGet_Success) {
|
||||
uint8_t data[] = { 0x31, 0x03, 0x06, 0x01, 0xBA, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
asn1_context_t* ptr = asn1_set_get(ctx);
|
||||
ASSERT_NE((asn1_context_t*)NULL, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(asn1_oid_get(ptr, &oid, &length));
|
||||
EXPECT_EQ(1U, length);
|
||||
EXPECT_EQ(0xBAU, *oid);
|
||||
asn1_context_free(ptr);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, SetGet_Success) {
|
||||
uint8_t data[] = { 0x31, 0x03, 0x06, 0x01, 0xBA };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
std::unique_ptr<asn1_context> ptr(ctx.asn1_set_get());
|
||||
ASSERT_NE(nullptr, ptr);
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(ptr->asn1_oid_get(&oid, &length));
|
||||
ASSERT_EQ(1U, length);
|
||||
ASSERT_EQ(0xBAU, *oid);
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, OidGet_LengthZero_Failure) {
|
||||
uint8_t data[] = { 0x06, 0x00, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
EXPECT_FALSE(asn1_oid_get(ctx, &oid, &length));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, OidGet_LengthZero_Failure) {
|
||||
uint8_t data[] = { 0x06, 0x00, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ctx.asn1_oid_get(&oid, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, OidGet_TooSmall_Failure) {
|
||||
uint8_t data[] = { 0x06, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
EXPECT_FALSE(asn1_oid_get(ctx, &oid, &length));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, OidGet_TooSmall_Failure) {
|
||||
uint8_t data[] = { 0x06, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ctx.asn1_oid_get(&oid, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, OidGet_Success) {
|
||||
uint8_t data[] = { 0x06, 0x01, 0x99, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(asn1_oid_get(ctx, &oid, &length));
|
||||
EXPECT_EQ(1U, length);
|
||||
EXPECT_EQ(0x99U, *oid);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, OidGet_Success) {
|
||||
uint8_t data[] = { 0x06, 0x01, 0x99 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
const uint8_t* oid;
|
||||
size_t length;
|
||||
ASSERT_TRUE(ctx.asn1_oid_get(&oid, &length));
|
||||
ASSERT_EQ(1U, length);
|
||||
ASSERT_EQ(0x99U, *oid);
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, OctetStringGet_LengthZero_Failure) {
|
||||
uint8_t data[] = { 0x04, 0x00, 0x55, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
const uint8_t* string;
|
||||
size_t length;
|
||||
ASSERT_FALSE(asn1_octet_string_get(ctx, &string, &length));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, OctetStringGet_LengthZero_Failure) {
|
||||
uint8_t data[] = { 0x04, 0x00, 0x55 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
const uint8_t* string;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ctx.asn1_octet_string_get(&string, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, OctetStringGet_TooSmall_Failure) {
|
||||
uint8_t data[] = { 0x04, 0x01, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
const uint8_t* string;
|
||||
size_t length;
|
||||
ASSERT_FALSE(asn1_octet_string_get(ctx, &string, &length));
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, OctetStringGet_TooSmall_Failure) {
|
||||
uint8_t data[] = { 0x04, 0x01 };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
const uint8_t* string;
|
||||
size_t length;
|
||||
ASSERT_FALSE(ctx.asn1_octet_string_get(&string, &length));
|
||||
}
|
||||
|
||||
TEST_F(Asn1DecoderTest, OctetStringGet_Success) {
|
||||
uint8_t data[] = { 0x04, 0x01, 0xAA, };
|
||||
asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
|
||||
const uint8_t* string;
|
||||
size_t length;
|
||||
ASSERT_TRUE(asn1_octet_string_get(ctx, &string, &length));
|
||||
EXPECT_EQ(1U, length);
|
||||
EXPECT_EQ(0xAAU, *string);
|
||||
asn1_context_free(ctx);
|
||||
TEST(Asn1DecoderTest, OctetStringGet_Success) {
|
||||
uint8_t data[] = { 0x04, 0x01, 0xAA };
|
||||
asn1_context ctx(data, sizeof(data));
|
||||
const uint8_t* string;
|
||||
size_t length;
|
||||
ASSERT_TRUE(ctx.asn1_octet_string_get(&string, &length));
|
||||
ASSERT_EQ(1U, length);
|
||||
ASSERT_EQ(0xAAU, *string);
|
||||
}
|
||||
|
||||
} // namespace android
|
||||
|
|
|
|||
76
verifier.cpp
76
verifier.cpp
|
|
@ -66,48 +66,50 @@ static bool read_pkcs7(const uint8_t* pkcs7_der, size_t pkcs7_der_len,
|
|||
CHECK(sig_der != nullptr);
|
||||
sig_der->clear();
|
||||
|
||||
asn1_context_t* ctx = asn1_context_new(pkcs7_der, pkcs7_der_len);
|
||||
if (ctx == NULL) {
|
||||
asn1_context ctx(pkcs7_der, pkcs7_der_len);
|
||||
|
||||
std::unique_ptr<asn1_context> pkcs7_seq(ctx.asn1_sequence_get());
|
||||
if (pkcs7_seq == nullptr || !pkcs7_seq->asn1_sequence_next()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
asn1_context_t* pkcs7_seq = asn1_sequence_get(ctx);
|
||||
if (pkcs7_seq != NULL && asn1_sequence_next(pkcs7_seq)) {
|
||||
asn1_context_t *signed_data_app = asn1_constructed_get(pkcs7_seq);
|
||||
if (signed_data_app != NULL) {
|
||||
asn1_context_t* signed_data_seq = asn1_sequence_get(signed_data_app);
|
||||
if (signed_data_seq != NULL
|
||||
&& asn1_sequence_next(signed_data_seq)
|
||||
&& asn1_sequence_next(signed_data_seq)
|
||||
&& asn1_sequence_next(signed_data_seq)
|
||||
&& asn1_constructed_skip_all(signed_data_seq)) {
|
||||
asn1_context_t *sig_set = asn1_set_get(signed_data_seq);
|
||||
if (sig_set != NULL) {
|
||||
asn1_context_t* sig_seq = asn1_sequence_get(sig_set);
|
||||
if (sig_seq != NULL
|
||||
&& asn1_sequence_next(sig_seq)
|
||||
&& asn1_sequence_next(sig_seq)
|
||||
&& asn1_sequence_next(sig_seq)
|
||||
&& asn1_sequence_next(sig_seq)) {
|
||||
const uint8_t* sig_der_ptr;
|
||||
size_t sig_der_length;
|
||||
if (asn1_octet_string_get(sig_seq, &sig_der_ptr, &sig_der_length)) {
|
||||
sig_der->resize(sig_der_length);
|
||||
std::copy(sig_der_ptr, sig_der_ptr + sig_der_length, sig_der->begin());
|
||||
}
|
||||
asn1_context_free(sig_seq);
|
||||
}
|
||||
asn1_context_free(sig_set);
|
||||
}
|
||||
asn1_context_free(signed_data_seq);
|
||||
}
|
||||
asn1_context_free(signed_data_app);
|
||||
}
|
||||
asn1_context_free(pkcs7_seq);
|
||||
std::unique_ptr<asn1_context> signed_data_app(pkcs7_seq->asn1_constructed_get());
|
||||
if (signed_data_app == nullptr) {
|
||||
return false;
|
||||
}
|
||||
asn1_context_free(ctx);
|
||||
|
||||
return !sig_der->empty();
|
||||
std::unique_ptr<asn1_context> signed_data_seq(signed_data_app->asn1_sequence_get());
|
||||
if (signed_data_seq == nullptr ||
|
||||
!signed_data_seq->asn1_sequence_next() ||
|
||||
!signed_data_seq->asn1_sequence_next() ||
|
||||
!signed_data_seq->asn1_sequence_next() ||
|
||||
!signed_data_seq->asn1_constructed_skip_all()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
std::unique_ptr<asn1_context> sig_set(signed_data_seq->asn1_set_get());
|
||||
if (sig_set == nullptr) {
|
||||
return false;
|
||||
}
|
||||
|
||||
std::unique_ptr<asn1_context> sig_seq(sig_set->asn1_sequence_get());
|
||||
if (sig_seq == nullptr ||
|
||||
!sig_seq->asn1_sequence_next() ||
|
||||
!sig_seq->asn1_sequence_next() ||
|
||||
!sig_seq->asn1_sequence_next() ||
|
||||
!sig_seq->asn1_sequence_next()) {
|
||||
return false;
|
||||
}
|
||||
|
||||
const uint8_t* sig_der_ptr;
|
||||
size_t sig_der_length;
|
||||
if (!sig_seq->asn1_octet_string_get(&sig_der_ptr, &sig_der_length)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
sig_der->resize(sig_der_length);
|
||||
std::copy(sig_der_ptr, sig_der_ptr + sig_der_length, sig_der->begin());
|
||||
return true;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Reference in a new issue