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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /comm/third_party/botan/src/lib/asn1/asn1_obj.cpp | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'comm/third_party/botan/src/lib/asn1/asn1_obj.cpp')
-rw-r--r-- | comm/third_party/botan/src/lib/asn1/asn1_obj.cpp | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/asn1/asn1_obj.cpp b/comm/third_party/botan/src/lib/asn1/asn1_obj.cpp new file mode 100644 index 0000000000..8243552648 --- /dev/null +++ b/comm/third_party/botan/src/lib/asn1/asn1_obj.cpp @@ -0,0 +1,238 @@ +/* +* ASN.1 Internals +* (C) 1999-2007,2018 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include <botan/asn1_obj.h> +#include <botan/der_enc.h> +#include <botan/data_src.h> +#include <botan/internal/stl_util.h> +#include <sstream> + +namespace Botan { + +std::vector<uint8_t> ASN1_Object::BER_encode() const + { + std::vector<uint8_t> output; + DER_Encoder der(output); + this->encode_into(der); + return output; + } + +/* +* Check a type invariant on BER data +*/ +void BER_Object::assert_is_a(ASN1_Tag type_tag_, ASN1_Tag class_tag_, + const std::string& descr) const + { + if(this->is_a(type_tag_, class_tag_) == false) + { + std::stringstream msg; + + msg << "Tag mismatch when decoding " << descr << " got "; + + if(class_tag == NO_OBJECT && type_tag == NO_OBJECT) + { + msg << "EOF"; + } + else + { + if(class_tag == UNIVERSAL || class_tag == CONSTRUCTED) + { + msg << asn1_tag_to_string(type_tag); + } + else + { + msg << std::to_string(type_tag); + } + + msg << "/" << asn1_class_to_string(class_tag); + } + + msg << " expected "; + + if(class_tag_ == UNIVERSAL || class_tag_ == CONSTRUCTED) + { + msg << asn1_tag_to_string(type_tag_); + } + else + { + msg << std::to_string(type_tag_); + } + + msg << "/" << asn1_class_to_string(class_tag_); + + throw BER_Decoding_Error(msg.str()); + } + } + +bool BER_Object::is_a(ASN1_Tag type_tag_, ASN1_Tag class_tag_) const + { + return (type_tag == type_tag_ && class_tag == class_tag_); + } + +bool BER_Object::is_a(int type_tag_, ASN1_Tag class_tag_) const + { + return is_a(ASN1_Tag(type_tag_), class_tag_); + } + +void BER_Object::set_tagging(ASN1_Tag t, ASN1_Tag c) + { + type_tag = t; + class_tag = c; + } + +std::string asn1_class_to_string(ASN1_Tag type) + { + switch(type) + { + case UNIVERSAL: + return "UNIVERSAL"; + case CONSTRUCTED: + return "CONSTRUCTED"; + case CONTEXT_SPECIFIC: + return "CONTEXT_SPECIFIC"; + case APPLICATION: + return "APPLICATION"; + case CONSTRUCTED | CONTEXT_SPECIFIC: + return "PRIVATE"; + case Botan::NO_OBJECT: + return "NO_OBJECT"; + default: + return "CLASS(" + std::to_string(static_cast<size_t>(type)) + ")"; + } + } + +std::string asn1_tag_to_string(ASN1_Tag type) + { + switch(type) + { + case Botan::SEQUENCE: + return "SEQUENCE"; + + case Botan::SET: + return "SET"; + + case Botan::PRINTABLE_STRING: + return "PRINTABLE STRING"; + + case Botan::NUMERIC_STRING: + return "NUMERIC STRING"; + + case Botan::IA5_STRING: + return "IA5 STRING"; + + case Botan::T61_STRING: + return "T61 STRING"; + + case Botan::UTF8_STRING: + return "UTF8 STRING"; + + case Botan::VISIBLE_STRING: + return "VISIBLE STRING"; + + case Botan::BMP_STRING: + return "BMP STRING"; + + case Botan::UNIVERSAL_STRING: + return "UNIVERSAL STRING"; + + case Botan::UTC_TIME: + return "UTC TIME"; + + case Botan::GENERALIZED_TIME: + return "GENERALIZED TIME"; + + case Botan::OCTET_STRING: + return "OCTET STRING"; + + case Botan::BIT_STRING: + return "BIT STRING"; + + case Botan::ENUMERATED: + return "ENUMERATED"; + + case Botan::INTEGER: + return "INTEGER"; + + case Botan::NULL_TAG: + return "NULL"; + + case Botan::OBJECT_ID: + return "OBJECT"; + + case Botan::BOOLEAN: + return "BOOLEAN"; + + case Botan::NO_OBJECT: + return "NO_OBJECT"; + + default: + return "TAG(" + std::to_string(static_cast<size_t>(type)) + ")"; + } + } + +/* +* BER Decoding Exceptions +*/ +BER_Decoding_Error::BER_Decoding_Error(const std::string& str) : + Decoding_Error("BER: " + str) {} + +BER_Bad_Tag::BER_Bad_Tag(const std::string& str, ASN1_Tag tag) : + BER_Decoding_Error(str + ": " + std::to_string(tag)) {} + +BER_Bad_Tag::BER_Bad_Tag(const std::string& str, + ASN1_Tag tag1, ASN1_Tag tag2) : + BER_Decoding_Error(str + ": " + std::to_string(tag1) + "/" + std::to_string(tag2)) {} + +namespace ASN1 { + +/* +* Put some arbitrary bytes into a SEQUENCE +*/ +std::vector<uint8_t> put_in_sequence(const std::vector<uint8_t>& contents) + { + return ASN1::put_in_sequence(contents.data(), contents.size()); + } + +std::vector<uint8_t> put_in_sequence(const uint8_t bits[], size_t len) + { + std::vector<uint8_t> output; + DER_Encoder(output) + .start_cons(SEQUENCE) + .raw_bytes(bits, len) + .end_cons(); + return output; + } + +/* +* Convert a BER object into a string object +*/ +std::string to_string(const BER_Object& obj) + { + return std::string(cast_uint8_ptr_to_char(obj.bits()), + obj.length()); + } + +/* +* Do heuristic tests for BER data +*/ +bool maybe_BER(DataSource& source) + { + uint8_t first_u8; + if(!source.peek_byte(first_u8)) + { + BOTAN_ASSERT_EQUAL(source.read_byte(first_u8), 0, "Expected EOF"); + throw Stream_IO_Error("ASN1::maybe_BER: Source was empty"); + } + + if(first_u8 == (SEQUENCE | CONSTRUCTED)) + return true; + return false; + } + +} + +} |