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-rw-r--r--src/asn1/asn1_str.cpp161
1 files changed, 161 insertions, 0 deletions
diff --git a/src/asn1/asn1_str.cpp b/src/asn1/asn1_str.cpp
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index 000000000..52dcdc55e
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+++ b/src/asn1/asn1_str.cpp
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+/*************************************************
+* Simple ASN.1 String Types Source File *
+* (C) 1999-2007 Jack Lloyd *
+*************************************************/
+
+#include <botan/asn1_obj.h>
+#include <botan/der_enc.h>
+#include <botan/ber_dec.h>
+#include <botan/charset.h>
+#include <botan/parsing.h>
+#include <botan/libstate.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(u32bit j = 0; j != str.size(); ++j)
+ {
+ if(!IS_PRINTABLE[static_cast<byte>(str[j])])
+ {
+ if(type == "utf8") return UTF8_STRING;
+ if(type == "latin1") return T61_STRING;
+ throw Invalid_Argument("Bad setting for x509/ca/str_type: " + type);
+ }
+ }
+ return PRINTABLE_STRING;
+ }
+
+}
+
+/*************************************************
+* Check if type is a known ASN.1 string type *
+*************************************************/
+bool is_string_type(ASN1_Tag tag)
+ {
+ if(tag == NUMERIC_STRING || tag == PRINTABLE_STRING ||
+ tag == VISIBLE_STRING || tag == T61_STRING || tag == IA5_STRING ||
+ tag == UTF8_STRING || tag == BMP_STRING)
+ return true;
+ return false;
+ }
+
+/*************************************************
+* 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,
+ global_state().option("x509/ca/str_type"));
+
+ 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 " +
+ 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,
+ global_state().option("x509/ca/str_type"));
+ }
+
+/*************************************************
+* 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);
+ }
+
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 13:24:55 +0000