diff options
Diffstat (limited to 'comm/third_party/botan/src/cli/hash.cpp')
-rw-r--r-- | comm/third_party/botan/src/cli/hash.cpp | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/cli/hash.cpp b/comm/third_party/botan/src/cli/hash.cpp new file mode 100644 index 0000000000..8e59b2ab56 --- /dev/null +++ b/comm/third_party/botan/src/cli/hash.cpp @@ -0,0 +1,78 @@ +/* +* (C) 2009,2010,2014,2015,2019 Jack Lloyd +* +* Botan is released under the Simplified BSD License (see license.txt) +*/ + +#include "cli.h" + +#if defined(BOTAN_HAS_HASH) + #include <botan/hash.h> +#endif + +namespace Botan_CLI { + +#if defined(BOTAN_HAS_HASH) + +class Hash final : public Command + { + public: + Hash() : Command("hash --algo=SHA-256 --buf-size=4096 --no-fsname --format=hex *files") {} + + std::string group() const override + { + return "hash"; + } + + std::string description() const override + { + return "Compute the message digest of given file(s)"; + } + + void go() override + { + const std::string hash_algo = get_arg("algo"); + const std::string format = get_arg("format"); + const size_t buf_size = get_arg_sz("buf-size"); + const bool no_fsname = flag_set("no-fsname"); + + std::unique_ptr<Botan::HashFunction> hash_fn(Botan::HashFunction::create(hash_algo)); + + if(!hash_fn) + { + throw CLI_Error_Unsupported("hashing", hash_algo); + } + + std::vector<std::string> files = get_arg_list("files"); + if(files.empty()) + { + files.push_back("-"); + } // read stdin if no arguments on command line + + for(const std::string& fsname : files) + { + try + { + auto update_hash = [&](const uint8_t b[], size_t l) { hash_fn->update(b, l); }; + read_file(fsname, update_hash, buf_size); + + const std::string digest = format_blob(format, hash_fn->final()); + + if(no_fsname) + output() << digest << "\n"; + else + output() << digest << " " << fsname << "\n"; + } + catch(CLI_IO_Error& e) + { + error_output() << e.what() << "\n"; + } + } + } + }; + +BOTAN_REGISTER_COMMAND("hash", Hash); + +#endif + +} |