1 files changed, 0 insertions, 154 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/entropy/proc_walk/proc_walk.cpp b/src/libs/3rdparty/botan/src/lib/entropy/proc_walk/proc_walk.cpp
deleted file mode 100644
index d780cbf739..0000000000
--- a/src/libs/3rdparty/botan/src/lib/entropy/proc_walk/proc_walk.cpp
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
-* Entropy source based on reading files in /proc on the assumption
-* that a remote attacker will have difficulty guessing some of them.
-*
-* (C) 1999-2008,2012 Jack Lloyd
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/internal/proc_walk.h>
-#include <deque>
-
-#ifndef _POSIX_C_SOURCE
-  #define _POSIX_C_SOURCE 199309
-#endif
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <fcntl.h>
-
-namespace Botan {
-
-namespace {
-
-class Directory_Walker final : public File_Descriptor_Source
-   {
-   public:
-      explicit Directory_Walker(const std::string& root) :
-         m_cur_dir(std::make_pair<DIR*, std::string>(nullptr, ""))
-         {
-         if(DIR* root_dir = ::opendir(root.c_str()))
-            m_cur_dir = std::make_pair(root_dir, root);
-         }
-
-      ~Directory_Walker()
-         {
-         if(m_cur_dir.first)
-            ::closedir(m_cur_dir.first);
-         }
-
-      int next_fd() override;
-   private:
-      std::pair<struct dirent*, std::string> get_next_dirent();
-
-      std::pair<DIR*, std::string> m_cur_dir;
-      std::deque<std::string> m_dirlist;
-   };
-
-std::pair<struct dirent*, std::string> Directory_Walker::get_next_dirent()
-   {
-   while(m_cur_dir.first)
-      {
-      if(struct dirent* dir = ::readdir(m_cur_dir.first))
-         return std::make_pair(dir, m_cur_dir.second);
-
-      ::closedir(m_cur_dir.first);
-      m_cur_dir = std::make_pair<DIR*, std::string>(nullptr, "");
-
-      while(!m_dirlist.empty() && !m_cur_dir.first)
-         {
-         const std::string next_dir_name = m_dirlist[0];
-         m_dirlist.pop_front();
-
-         if(DIR* next_dir = ::opendir(next_dir_name.c_str()))
-            m_cur_dir = std::make_pair(next_dir, next_dir_name);
-         }
-      }
-
-   return std::make_pair<struct dirent*, std::string>(nullptr, ""); // nothing left
-   }
-
-int Directory_Walker::next_fd()
-   {
-   while(true)
-      {
-      std::pair<struct dirent*, std::string> entry = get_next_dirent();
-
-      if(!entry.first)
-         break; // no more dirs
-
-      const std::string filename = entry.first->d_name;
-
-      if(filename == "." || filename == "..")
-         continue;
-
-      const std::string full_path = entry.second + "/" + filename;
-
-      struct stat stat_buf;
-      if(::lstat(full_path.c_str(), &stat_buf) == -1)
-         continue;
-
-      if(S_ISDIR(stat_buf.st_mode))
-         {
-         m_dirlist.push_back(full_path);
-         }
-      else if(S_ISREG(stat_buf.st_mode) && (stat_buf.st_mode & S_IROTH))
-         {
-         int fd = ::open(full_path.c_str(), O_RDONLY | O_NOCTTY);
-
-         if(fd >= 0)
-            return fd;
-         }
-      }
-
-   return -1;
-   }
-
-}
-
-size_t ProcWalking_EntropySource::poll(RandomNumberGenerator& rng)
-   {
-   const size_t MAX_FILES_READ_PER_POLL = 2048;
-
-   lock_guard_type<mutex_type> lock(m_mutex);
-
-   if(!m_dir)
-      m_dir.reset(new Directory_Walker(m_path));
-
-   m_buf.resize(4096);
-
-   size_t bits = 0;
-
-   for(size_t i = 0; i != MAX_FILES_READ_PER_POLL; ++i)
-      {
-      int fd = m_dir->next_fd();
-
-      // If we've exhaused this walk of the directory, halt the poll
-      if(fd == -1)
-         {
-         m_dir.reset();
-         break;
-         }
-
-      ssize_t got = ::read(fd, m_buf.data(), m_buf.size());
-      ::close(fd);
-
-      if(got > 0)
-         {
-         rng.add_entropy(m_buf.data(), static_cast<size_t>(got));
-
-         // Conservative estimate of 4 bits per file
-         bits += 4;
-         }
-
-      if(bits > 128)
-         break;
-      }
-
-   return bits;
-   }
-
-}