1 files changed, 144 insertions, 0 deletions
diff --git a/comm/third_party/botan/src/lib/utils/filesystem.cpp b/comm/third_party/botan/src/lib/utils/filesystem.cpp
new file mode 100644
index 0000000000..3072a304f2
--- /dev/null
+++ b/comm/third_party/botan/src/lib/utils/filesystem.cpp
@@ -0,0 +1,144 @@
+/*
+* (C) 2015,2017,2019 Jack Lloyd
+* (C) 2015 Simon Warta (Kullo GmbH)
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/exceptn.h>
+#include <botan/internal/filesystem.h>
+#include <algorithm>
+#include <deque>
+#include <memory>
+
+#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
+  #include <sys/types.h>
+  #include <sys/stat.h>
+  #include <dirent.h>
+  #include <functional>
+#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
+  #define NOMINMAX 1
+  #define _WINSOCKAPI_ // stop windows.h including winsock.h
+  #include <windows.h>
+#endif
+
+namespace Botan {
+
+namespace {
+
+#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
+
+std::vector<std::string> impl_readdir(const std::string& dir_path)
+   {
+   std::vector<std::string> out;
+   std::deque<std::string> dir_list;
+   dir_list.push_back(dir_path);
+
+   while(!dir_list.empty())
+      {
+      const std::string cur_path = dir_list[0];
+      dir_list.pop_front();
+
+      std::unique_ptr<DIR, std::function<int (DIR*)>> dir(::opendir(cur_path.c_str()), ::closedir);
+
+      if(dir)
+         {
+         while(struct dirent* dirent = ::readdir(dir.get()))
+            {
+            const std::string filename = dirent->d_name;
+            if(filename == "." || filename == "..")
+               continue;
+            const std::string full_path = cur_path + "/" + filename;
+
+            struct stat stat_buf;
+
+            if(::stat(full_path.c_str(), &stat_buf) == -1)
+               continue;
+
+            if(S_ISDIR(stat_buf.st_mode))
+               dir_list.push_back(full_path);
+            else if(S_ISREG(stat_buf.st_mode))
+               out.push_back(full_path);
+            }
+         }
+      }
+
+   return out;
+   }
+
+#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
+
+std::vector<std::string> impl_win32(const std::string& dir_path)
+   {
+   std::vector<std::string> out;
+   std::deque<std::string> dir_list;
+   dir_list.push_back(dir_path);
+
+   while(!dir_list.empty())
+      {
+      const std::string cur_path = dir_list[0];
+      dir_list.pop_front();
+
+      WIN32_FIND_DATAA find_data;
+      HANDLE dir = ::FindFirstFileA((cur_path + "/*").c_str(), &find_data);
+
+      if(dir != INVALID_HANDLE_VALUE)
+         {
+         do
+            {
+            const std::string filename = find_data.cFileName;
+            if(filename == "." || filename == "..")
+               continue;
+            const std::string full_path = cur_path + "/" + filename;
+
+            if(find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+               {
+               dir_list.push_back(full_path);
+               }
+            else
+               {
+               out.push_back(full_path);
+               }
+            }
+         while(::FindNextFileA(dir, &find_data));
+         }
+
+      ::FindClose(dir);
+      }
+
+   return out;
+}
+#endif
+
+}
+
+bool has_filesystem_impl()
+   {
+#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
+   return true;
+#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
+   return true;
+#else
+   return false;
+#endif
+   }
+
+std::vector<std::string> get_files_recursive(const std::string& dir)
+   {
+   std::vector<std::string> files;
+
+#if defined(BOTAN_TARGET_OS_HAS_POSIX1)
+   files = impl_readdir(dir);
+#elif defined(BOTAN_TARGET_OS_HAS_WIN32)
+   files = impl_win32(dir);
+#else
+   BOTAN_UNUSED(dir);
+   throw No_Filesystem_Access();
+#endif
+
+   std::sort(files.begin(), files.end());
+
+   return files;
+   }
+
+}