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authorlloyd <lloyd@randombit.net>2014-01-10 03:41:59 +0000
committerlloyd <lloyd@randombit.net>2014-01-10 03:41:59 +0000
commit6894dca64c04936d07048c0e8cbf7e25858548c3 (patch)
tree5d572bfde9fe667dab14e3f04b5285a85d8acd95 /src/lib/asn1/asn1_str.cpp
parent9efa3be92442afb3d0b69890a36c7f122df18eda (diff)
Move lib into src
Diffstat (limited to 'src/lib/asn1/asn1_str.cpp')
-rw-r--r--src/lib/asn1/asn1_str.cpp148
1 files changed, 148 insertions, 0 deletions
diff --git a/src/lib/asn1/asn1_str.cpp b/src/lib/asn1/asn1_str.cpp
new file mode 100644
index 000000000..44db189f9
--- /dev/null
+++ b/src/lib/asn1/asn1_str.cpp
@@ -0,0 +1,148 @@
+/*
+* Simple ASN.1 String Types
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/asn1_str.h>
+#include <botan/der_enc.h>
+#include <botan/ber_dec.h>
+#include <botan/charset.h>
+#include <botan/parsing.h>
+
+namespace Botan {
+
+namespace {
+
+/*
+* Choose an encoding for the string
+*/
+ASN1_Tag choose_encoding(const std::string& str,
+ const std::string& type)
+ {
+ static const byte IS_PRINTABLE[256] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00,
+ 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 };
+
+ for(size_t i = 0; i != str.size(); ++i)
+ {
+ if(!IS_PRINTABLE[static_cast<byte>(str[i])])
+ {
+ if(type == "utf8") return UTF8_STRING;
+ if(type == "latin1") return T61_STRING;
+ throw Invalid_Argument("choose_encoding: Bad string type " + type);
+ }
+ }
+ return PRINTABLE_STRING;
+ }
+
+}
+
+/*
+* Create an ASN1_String
+*/
+ASN1_String::ASN1_String(const std::string& str, ASN1_Tag t) : tag(t)
+ {
+ iso_8859_str = Charset::transcode(str, LOCAL_CHARSET, LATIN1_CHARSET);
+
+ if(tag == DIRECTORY_STRING)
+ tag = choose_encoding(iso_8859_str, "latin1");
+
+ if(tag != NUMERIC_STRING &&
+ tag != PRINTABLE_STRING &&
+ tag != VISIBLE_STRING &&
+ tag != T61_STRING &&
+ tag != IA5_STRING &&
+ tag != UTF8_STRING &&
+ tag != BMP_STRING)
+ throw Invalid_Argument("ASN1_String: Unknown string type " +
+ std::to_string(tag));
+ }
+
+/*
+* Create an ASN1_String
+*/
+ASN1_String::ASN1_String(const std::string& str)
+ {
+ iso_8859_str = Charset::transcode(str, LOCAL_CHARSET, LATIN1_CHARSET);
+ tag = choose_encoding(iso_8859_str, "latin1");
+ }
+
+/*
+* Return this string in ISO 8859-1 encoding
+*/
+std::string ASN1_String::iso_8859() const
+ {
+ return iso_8859_str;
+ }
+
+/*
+* Return this string in local encoding
+*/
+std::string ASN1_String::value() const
+ {
+ return Charset::transcode(iso_8859_str, LATIN1_CHARSET, LOCAL_CHARSET);
+ }
+
+/*
+* Return the type of this string object
+*/
+ASN1_Tag ASN1_String::tagging() const
+ {
+ return tag;
+ }
+
+/*
+* DER encode an ASN1_String
+*/
+void ASN1_String::encode_into(DER_Encoder& encoder) const
+ {
+ std::string value = iso_8859();
+ if(tagging() == UTF8_STRING)
+ value = Charset::transcode(value, LATIN1_CHARSET, UTF8_CHARSET);
+ encoder.add_object(tagging(), UNIVERSAL, value);
+ }
+
+/*
+* Decode a BER encoded ASN1_String
+*/
+void ASN1_String::decode_from(BER_Decoder& source)
+ {
+ BER_Object obj = source.get_next_object();
+
+ Character_Set charset_is;
+
+ if(obj.type_tag == BMP_STRING)
+ charset_is = UCS2_CHARSET;
+ else if(obj.type_tag == UTF8_STRING)
+ charset_is = UTF8_CHARSET;
+ else
+ charset_is = LATIN1_CHARSET;
+
+ *this = ASN1_String(
+ Charset::transcode(ASN1::to_string(obj), charset_is, LOCAL_CHARSET),
+ obj.type_tag);
+ }
+
+}