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[libbacnet]: bacapp_data_len() + bacnet_tag_number_and_value_decode() (#453)

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* Bugfix: bacapp_data_len() + bacnet_tag_number_and_value_decode()

* Fix bacnet_tag_number_and_value_decode function.
Add read buffer safe functions for opening, closing, context specific tags.
Fix bacapp_data_len function changes as indicated by unit testing.

* refactor bacapp_data_len
---------
Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
This commit is contained in:
anthony-crystalpeak
2023-07-31 14:50:14 -07:00
committed by GitHub
parent 28de333b6e
commit acb3b0f57d
4 changed files with 134 additions and 48 deletions
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src/bacnet/bacdcode.h
+7
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@@ -61,6 +61,13 @@ extern "C" {
bool context_specific,
uint32_t len_value_type);
BACNET_STACK_EXPORT
bool bacnet_is_opening_tag(uint8_t *apdu, uint32_t apdu_size);
BACNET_STACK_EXPORT
bool bacnet_is_closing_tag(uint8_t *apdu, uint32_t apdu_size);
BACNET_STACK_EXPORT
bool bacnet_is_context_specific(uint8_t *apdu, uint32_t apdu_size);
/* from clause 20.2.1.3.2 Constructed Data */
/* returns the number of apdu bytes consumed */
BACNET_STACK_EXPORT