1 files changed, 89 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/cli/asn1.cpp b/comm/third_party/botan/src/cli/asn1.cpp
new file mode 100644
index 0000000000..32cec2c253
--- /dev/null
+++ b/comm/third_party/botan/src/cli/asn1.cpp
@@ -0,0 +1,89 @@
+/*
+* (C) 2014,2015 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include "cli.h"
+
+#if defined(BOTAN_HAS_ASN1)
+
+#include <botan/asn1_print.h>
+#include <botan/data_src.h>
+
+#if defined(BOTAN_HAS_PEM_CODEC)
+  #include <botan/pem.h>
+#endif
+
+namespace Botan_CLI {
+
+class ASN1_Printer final : public Command
+   {
+   public:
+      ASN1_Printer() : Command("asn1print --skip-context-specific --print-limit=4096 --bin-limit=2048 --max-depth=64 --pem file") {}
+
+      std::string group() const override
+         {
+         return "codec";
+         }
+
+      std::string description() const override
+         {
+         return "Decode and print file with ASN.1 Basic Encoding Rules (BER)";
+         }
+
+      bool first_n(const std::vector<uint8_t>& data, size_t n, uint8_t b)
+         {
+         if(data.size() < n)
+            return false;
+
+         for(size_t i = 0; i != n; ++i)
+            if(data[i] != b)
+               return false;
+
+         return true;
+         }
+
+      void go() override
+         {
+         const std::string input = get_arg("file");
+         const size_t print_limit = get_arg_sz("print-limit");
+         const size_t bin_limit = get_arg_sz("bin-limit");
+         const bool print_context_specific = flag_set("skip-context-specific") == false;
+         const size_t max_depth = get_arg_sz("max-depth");
+
+         const size_t value_column = 60;
+         const size_t initial_level = 0;
+
+         std::vector<uint8_t> file_contents = slurp_file(input);
+         std::vector<uint8_t> data;
+
+         if(flag_set("pem") ||
+            (input.size() > 4 && input.substr(input.size() - 4) == ".pem") ||
+            (file_contents.size() > 20 && first_n(file_contents, 5, '-')))
+            {
+#if defined(BOTAN_HAS_PEM_CODEC)
+            std::string pem_label;
+            Botan::DataSource_Memory src(file_contents);
+            data = unlock(Botan::PEM_Code::decode(src, pem_label));
+#else
+            throw CLI_Error_Unsupported("PEM decoding not available in this build");
+#endif
+            }
+         else
+            {
+            data.swap(file_contents);
+            }
+
+         Botan::ASN1_Pretty_Printer printer(print_limit, bin_limit, print_context_specific,
+                                            initial_level, value_column, max_depth);
+
+         printer.print_to_stream(output(), data.data(), data.size());
+         }
+   };
+
+BOTAN_REGISTER_COMMAND("asn1print", ASN1_Printer);
+
+}
+
+#endif // BOTAN_HAS_ASN1 && BOTAN_HAS_PEM_CODEC