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-rw-r--r--src/asn1/ber_dec.cpp190
1 files changed, 96 insertions, 94 deletions
diff --git a/src/asn1/ber_dec.cpp b/src/asn1/ber_dec.cpp
index c725a5af9..ce6046652 100644
--- a/src/asn1/ber_dec.cpp
+++ b/src/asn1/ber_dec.cpp
@@ -1,7 +1,9 @@
-/*************************************************
-* BER Decoder Source File *
-* (C) 1999-2008 Jack Lloyd *
-*************************************************/
+/*
+* BER Decoder
+* (C) 1999-2008 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
#include <botan/ber_dec.h>
#include <botan/bigint.h>
@@ -11,9 +13,9 @@ namespace Botan {
namespace {
-/*************************************************
-* BER decode an ASN.1 type tag *
-*************************************************/
+/*
+* BER decode an ASN.1 type tag
+*/
u32bit decode_tag(DataSource* ber, ASN1_Tag& type_tag, ASN1_Tag& class_tag)
{
byte b;
@@ -48,14 +50,14 @@ u32bit decode_tag(DataSource* ber, ASN1_Tag& type_tag, ASN1_Tag& class_tag)
return tag_bytes;
}
-/*************************************************
-* Find the EOC marker *
-*************************************************/
+/*
+* Find the EOC marker
+*/
u32bit find_eoc(DataSource*);
-/*************************************************
-* BER decode an ASN.1 length field *
-*************************************************/
+/*
+* BER decode an ASN.1 length field
+*/
u32bit decode_length(DataSource* ber, u32bit& field_size)
{
byte b;
@@ -83,18 +85,18 @@ u32bit decode_length(DataSource* ber, u32bit& field_size)
return length;
}
-/*************************************************
-* BER decode an ASN.1 length field *
-*************************************************/
+/*
+* BER decode an ASN.1 length field
+*/
u32bit decode_length(DataSource* ber)
{
u32bit dummy;
return decode_length(ber, dummy);
}
-/*************************************************
-* Find the EOC marker *
-*************************************************/
+/*
+* Find the EOC marker
+*/
u32bit find_eoc(DataSource* ber)
{
SecureVector<byte> buffer(DEFAULT_BUFFERSIZE), data;
@@ -132,18 +134,18 @@ u32bit find_eoc(DataSource* ber)
}
-/*************************************************
-* Check a type invariant on BER data *
-*************************************************/
+/*
+* Check a type invariant on BER data
+*/
void BER_Object::assert_is_a(ASN1_Tag type_tag, ASN1_Tag class_tag)
{
if(this->type_tag != type_tag || this->class_tag != class_tag)
throw BER_Decoding_Error("Tag mismatch when decoding");
}
-/*************************************************
-* Check if more objects are there *
-*************************************************/
+/*
+* Check if more objects are there
+*/
bool BER_Decoder::more_items() const
{
if(source->end_of_data() && (pushed.type_tag == NO_OBJECT))
@@ -151,9 +153,9 @@ bool BER_Decoder::more_items() const
return true;
}
-/*************************************************
-* Verify that no bytes remain in the source *
-*************************************************/
+/*
+* Verify that no bytes remain in the source
+*/
BER_Decoder& BER_Decoder::verify_end()
{
if(!source->end_of_data() || (pushed.type_tag != NO_OBJECT))
@@ -161,9 +163,9 @@ BER_Decoder& BER_Decoder::verify_end()
return (*this);
}
-/*************************************************
-* Save all the bytes remaining in the source *
-*************************************************/
+/*
+* Save all the bytes remaining in the source
+*/
BER_Decoder& BER_Decoder::raw_bytes(MemoryRegion<byte>& out)
{
out.destroy();
@@ -173,9 +175,9 @@ BER_Decoder& BER_Decoder::raw_bytes(MemoryRegion<byte>& out)
return (*this);
}
-/*************************************************
-* Discard all the bytes remaining in the source *
-*************************************************/
+/*
+* Discard all the bytes remaining in the source
+*/
BER_Decoder& BER_Decoder::discard_remaining()
{
byte buf;
@@ -184,9 +186,9 @@ BER_Decoder& BER_Decoder::discard_remaining()
return (*this);
}
-/*************************************************
-* Return the BER encoding of the next object *
-*************************************************/
+/*
+* Return the BER encoding of the next object
+*/
BER_Object BER_Decoder::get_next_object()
{
BER_Object next;
@@ -213,9 +215,9 @@ BER_Object BER_Decoder::get_next_object()
return next;
}
-/*************************************************
-* Push a object back into the stream *
-*************************************************/
+/*
+* Push a object back into the stream
+*/
void BER_Decoder::push_back(const BER_Object& obj)
{
if(pushed.type_tag != NO_OBJECT)
@@ -223,9 +225,9 @@ void BER_Decoder::push_back(const BER_Object& obj)
pushed = obj;
}
-/*************************************************
-* Begin decoding a CONSTRUCTED type *
-*************************************************/
+/*
+* Begin decoding a CONSTRUCTED type
+*/
BER_Decoder BER_Decoder::start_cons(ASN1_Tag type_tag,
ASN1_Tag class_tag)
{
@@ -237,9 +239,9 @@ BER_Decoder BER_Decoder::start_cons(ASN1_Tag type_tag,
return result;
}
-/*************************************************
-* Finish decoding a CONSTRUCTED type *
-*************************************************/
+/*
+* Finish decoding a CONSTRUCTED type
+*/
BER_Decoder& BER_Decoder::end_cons()
{
if(!parent)
@@ -249,9 +251,9 @@ BER_Decoder& BER_Decoder::end_cons()
return (*parent);
}
-/*************************************************
-* BER_Decoder Constructor *
-*************************************************/
+/*
+* BER_Decoder Constructor
+*/
BER_Decoder::BER_Decoder(DataSource& src)
{
source = &src;
@@ -260,9 +262,9 @@ BER_Decoder::BER_Decoder(DataSource& src)
parent = 0;
}
-/*************************************************
-* BER_Decoder Constructor *
- *************************************************/
+/*
+* BER_Decoder Constructor
+ */
BER_Decoder::BER_Decoder(const byte data[], u32bit length)
{
source = new DataSource_Memory(data, length);
@@ -271,9 +273,9 @@ BER_Decoder::BER_Decoder(const byte data[], u32bit length)
parent = 0;
}
-/*************************************************
-* BER_Decoder Constructor *
-*************************************************/
+/*
+* BER_Decoder Constructor
+*/
BER_Decoder::BER_Decoder(const MemoryRegion<byte>& data)
{
source = new DataSource_Memory(data);
@@ -282,9 +284,9 @@ BER_Decoder::BER_Decoder(const MemoryRegion<byte>& data)
parent = 0;
}
-/*************************************************
-* BER_Decoder Copy Constructor *
-*************************************************/
+/*
+* BER_Decoder Copy Constructor
+*/
BER_Decoder::BER_Decoder(const BER_Decoder& other)
{
source = other.source;
@@ -298,9 +300,9 @@ BER_Decoder::BER_Decoder(const BER_Decoder& other)
parent = other.parent;
}
-/*************************************************
-* BER_Decoder Destructor *
-*************************************************/
+/*
+* BER_Decoder Destructor
+*/
BER_Decoder::~BER_Decoder()
{
if(owns)
@@ -308,18 +310,18 @@ BER_Decoder::~BER_Decoder()
source = 0;
}
-/*************************************************
-* Request for an object to decode itself *
-*************************************************/
+/*
+* Request for an object to decode itself
+*/
BER_Decoder& BER_Decoder::decode(ASN1_Object& obj)
{
obj.decode_from(*this);
return (*this);
}
-/*************************************************
-* Decode a BER encoded NULL *
-*************************************************/
+/*
+* Decode a BER encoded NULL
+*/
BER_Decoder& BER_Decoder::decode_null()
{
BER_Object obj = get_next_object();
@@ -329,33 +331,33 @@ BER_Decoder& BER_Decoder::decode_null()
return (*this);
}
-/*************************************************
-* Decode a BER encoded BOOLEAN *
-*************************************************/
+/*
+* Decode a BER encoded BOOLEAN
+*/
BER_Decoder& BER_Decoder::decode(bool& out)
{
return decode(out, BOOLEAN, UNIVERSAL);
}
-/*************************************************
-* Decode a small BER encoded INTEGER *
-*************************************************/
+/*
+* Decode a small BER encoded INTEGER
+*/
BER_Decoder& BER_Decoder::decode(u32bit& out)
{
return decode(out, INTEGER, UNIVERSAL);
}
-/*************************************************
-* Decode a BER encoded INTEGER *
-*************************************************/
+/*
+* Decode a BER encoded INTEGER
+*/
BER_Decoder& BER_Decoder::decode(BigInt& out)
{
return decode(out, INTEGER, UNIVERSAL);
}
-/*************************************************
-* Decode a BER encoded BOOLEAN *
-*************************************************/
+/*
+* Decode a BER encoded BOOLEAN
+*/
BER_Decoder& BER_Decoder::decode(bool& out,
ASN1_Tag type_tag, ASN1_Tag class_tag)
{
@@ -369,9 +371,9 @@ BER_Decoder& BER_Decoder::decode(bool& out,
return (*this);
}
-/*************************************************
-* Decode a small BER encoded INTEGER *
-*************************************************/
+/*
+* Decode a small BER encoded INTEGER
+*/
BER_Decoder& BER_Decoder::decode(u32bit& out,
ASN1_Tag type_tag, ASN1_Tag class_tag)
{
@@ -381,9 +383,9 @@ BER_Decoder& BER_Decoder::decode(u32bit& out,
return (*this);
}
-/*************************************************
-* Decode a BER encoded INTEGER *
-*************************************************/
+/*
+* Decode a BER encoded INTEGER
+*/
BER_Decoder& BER_Decoder::decode(BigInt& out,
ASN1_Tag type_tag, ASN1_Tag class_tag)
{
@@ -414,17 +416,17 @@ BER_Decoder& BER_Decoder::decode(BigInt& out,
return (*this);
}
-/*************************************************
-* BER decode a BIT STRING or OCTET STRING *
-*************************************************/
+/*
+* BER decode a BIT STRING or OCTET STRING
+*/
BER_Decoder& BER_Decoder::decode(MemoryRegion<byte>& out, ASN1_Tag real_type)
{
return decode(out, real_type, real_type, UNIVERSAL);
}
-/*************************************************
-* BER decode a BIT STRING or OCTET STRING *
-*************************************************/
+/*
+* BER decode a BIT STRING or OCTET STRING
+*/
BER_Decoder& BER_Decoder::decode(MemoryRegion<byte>& buffer,
ASN1_Tag real_type,
ASN1_Tag type_tag, ASN1_Tag class_tag)
@@ -446,9 +448,9 @@ BER_Decoder& BER_Decoder::decode(MemoryRegion<byte>& buffer,
return (*this);
}
-/*************************************************
-* Decode an OPTIONAL string type *
-*************************************************/
+/*
+* Decode an OPTIONAL string type
+*/
BER_Decoder& BER_Decoder::decode_optional_string(MemoryRegion<byte>& out,
ASN1_Tag real_type,
u16bit type_no)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 11:31:19 +0000