diff options
Diffstat (limited to 'src/algo_base/scan_name.cpp')
| -rw-r--r-- | src/algo_base/scan_name.cpp | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/src/algo_base/scan_name.cpp b/src/algo_base/scan_name.cpp deleted file mode 100644 index 84a5e24b4..000000000 --- a/src/algo_base/scan_name.cpp +++ /dev/null @@ -1,222 +0,0 @@ -/* -* SCAN Name Abstraction -* (C) 2008-2009 Jack Lloyd -* -* Distributed under the terms of the Botan license -*/ - -#include <botan/scan_name.h> -#include <botan/parsing.h> -#include <botan/exceptn.h> -#include <stdexcept> - -namespace Botan { - -namespace { - -std::string make_arg( - const std::vector<std::pair<size_t, std::string> >& name, size_t start) - { - std::string output = name[start].second; - size_t level = name[start].first; - - size_t paren_depth = 0; - - for(size_t i = start + 1; i != name.size(); ++i) - { - if(name[i].first <= name[start].first) - break; - - if(name[i].first > level) - { - output += '(' + name[i].second; - ++paren_depth; - } - else if(name[i].first < level) - { - output += ")," + name[i].second; - --paren_depth; - } - else - { - if(output[output.size() - 1] != '(') - output += ","; - output += name[i].second; - } - - level = name[i].first; - } - - for(size_t i = 0; i != paren_depth; ++i) - output += ')'; - - return output; - } - -std::pair<size_t, std::string> -deref_aliases(const std::pair<size_t, std::string>& in) - { - return std::make_pair(in.first, - SCAN_Name::deref_alias(in.second)); - } - -} - -std::mutex SCAN_Name::s_alias_map_mutex; -std::map<std::string, std::string> SCAN_Name::s_alias_map; - -SCAN_Name::SCAN_Name(std::string algo_spec) - { - orig_algo_spec = algo_spec; - - std::vector<std::pair<size_t, std::string> > name; - size_t level = 0; - std::pair<size_t, std::string> accum = std::make_pair(level, ""); - - std::string decoding_error = "Bad SCAN name '" + algo_spec + "': "; - - algo_spec = SCAN_Name::deref_alias(algo_spec); - - for(size_t i = 0; i != algo_spec.size(); ++i) - { - char c = algo_spec[i]; - - if(c == '/' || c == ',' || c == '(' || c == ')') - { - if(c == '(') - ++level; - else if(c == ')') - { - if(level == 0) - throw Decoding_Error(decoding_error + "Mismatched parens"); - --level; - } - - if(c == '/' && level > 0) - accum.second.push_back(c); - else - { - if(accum.second != "") - name.push_back(deref_aliases(accum)); - accum = std::make_pair(level, ""); - } - } - else - accum.second.push_back(c); - } - - if(accum.second != "") - name.push_back(deref_aliases(accum)); - - if(level != 0) - throw Decoding_Error(decoding_error + "Missing close paren"); - - if(name.size() == 0) - throw Decoding_Error(decoding_error + "Empty name"); - - alg_name = name[0].second; - - bool in_modes = false; - - for(size_t i = 1; i != name.size(); ++i) - { - if(name[i].first == 0) - { - mode_info.push_back(make_arg(name, i)); - in_modes = true; - } - else if(name[i].first == 1 && !in_modes) - args.push_back(make_arg(name, i)); - } - } - -std::string SCAN_Name::algo_name_and_args() const - { - std::string out; - - out = algo_name(); - - if(arg_count()) - { - out += '('; - for(size_t i = 0; i != arg_count(); ++i) - { - out += arg(i); - if(i != arg_count() - 1) - out += ','; - } - out += ')'; - - } - - return out; - } - -std::string SCAN_Name::arg(size_t i) const - { - if(i >= arg_count()) - throw std::range_error("SCAN_Name::argument - i out of range"); - return args[i]; - } - -std::string SCAN_Name::arg(size_t i, const std::string& def_value) const - { - if(i >= arg_count()) - return def_value; - return args[i]; - } - -size_t SCAN_Name::arg_as_integer(size_t i, size_t def_value) const - { - if(i >= arg_count()) - return def_value; - return to_u32bit(args[i]); - } - -void SCAN_Name::add_alias(const std::string& alias, const std::string& basename) - { - std::lock_guard<std::mutex> lock(s_alias_map_mutex); - - if(s_alias_map.find(alias) == s_alias_map.end()) - s_alias_map[alias] = basename; - } - -std::string SCAN_Name::deref_alias(const std::string& alias) - { - std::lock_guard<std::mutex> lock(s_alias_map_mutex); - - std::string name = alias; - - for(auto i = s_alias_map.find(name); i != s_alias_map.end(); i = s_alias_map.find(name)) - name = i->second; - - return name; - } - -void SCAN_Name::set_default_aliases() - { - // common variations worth supporting - SCAN_Name::add_alias("EME-PKCS1-v1_5", "PKCS1v15"); - SCAN_Name::add_alias("3DES", "TripleDES"); - SCAN_Name::add_alias("DES-EDE", "TripleDES"); - SCAN_Name::add_alias("CAST5", "CAST-128"); - SCAN_Name::add_alias("SHA1", "SHA-160"); - SCAN_Name::add_alias("SHA-1", "SHA-160"); - SCAN_Name::add_alias("MARK-4", "RC4(256)"); - SCAN_Name::add_alias("ARC4", "RC4"); - SCAN_Name::add_alias("OMAC", "CMAC"); - - // should be renamed in sources - SCAN_Name::add_alias("OAEP-MGF1", "EME1"); - SCAN_Name::add_alias("EME-OAEP", "EME1"); - SCAN_Name::add_alias("X9.31", "EMSA2"); - SCAN_Name::add_alias("EMSA-PKCS1-v1_5", "EMSA3"); - SCAN_Name::add_alias("PSS-MGF1", "EMSA4"); - SCAN_Name::add_alias("EMSA-PSS", "EMSA4"); - - // probably can be removed - SCAN_Name::add_alias("GOST", "GOST-28147-89"); - SCAN_Name::add_alias("GOST-34.11", "GOST-R-34.11-94"); - } - -} |