diff options
author | lloyd <lloyd@randombit.net> | 2014-01-10 03:41:59 +0000 |
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committer | lloyd <lloyd@randombit.net> | 2014-01-10 03:41:59 +0000 |
commit | 6894dca64c04936d07048c0e8cbf7e25858548c3 (patch) | |
tree | 5d572bfde9fe667dab14e3f04b5285a85d8acd95 /src/lib/asn1/asn1_str.cpp | |
parent | 9efa3be92442afb3d0b69890a36c7f122df18eda (diff) |
Move lib into src
Diffstat (limited to 'src/lib/asn1/asn1_str.cpp')
-rw-r--r-- | src/lib/asn1/asn1_str.cpp | 148 |
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); + } + +} |