Move socket implementation into module http_util

This removes the requirement of linking socket libraries for
applications that do not use http_util

1 files changed, 0 insertions, 267 deletions

diff --git a/src/lib/utils/os_utils.cpp b/src/lib/utils/os_utils.cpp
index d516e7600..d56c54232 100644
--- a/src/lib/utils/os_utils.cpp
+++ b/src/lib/utils/os_utils.cpp
@@ -12,16 +12,6 @@
 #include <botan/mem_ops.h>
 #include <chrono>
 
-#if defined(BOTAN_HAS_BOOST_ASIO)
-  /*
-  * We don't need serial port support anyway, and asking for it
-  * causes macro conflicts with Darwin's termios.h when this
-  * file is included in the amalgamation. GH #350
-  */
-  #define BOOST_ASIO_DISABLE_SERIAL_PORT
-  #include <boost/asio.hpp>
-#endif
-
 #if defined(BOTAN_TARGET_OS_HAS_EXPLICIT_BZERO)
   #include <string.h>
 #endif
@@ -34,267 +24,10 @@
   #include <setjmp.h>
   #include <unistd.h>
   #include <errno.h>
-
-#if !defined(BOTAN_HAS_BOOST_ASIO)
-  #include <sys/socket.h>
-  #include <netinet/in.h>
-  #include <netdb.h>
-#endif
-
-#elif defined(BOTAN_TARGET_OS_TYPE_IS_WINDOWS)
-  #define NOMINMAX 1
-#if !defined(BOTAN_HAS_BOOST_ASIO)
-  #include <winsock2.h>
-  #include <ws2tcpip.h>
-#endif
-  #include <windows.h>
 #endif
 
 namespace Botan {
 
-namespace {
-
-#if defined(BOTAN_HAS_BOOST_ASIO)
-
-class Asio_Socket final : public OS::Socket
-   {
-   public:
-      Asio_Socket(const std::string& hostname, const std::string& service) :
-         m_tcp(m_io)
-         {
-         boost::asio::ip::tcp::resolver resolver(m_io);
-         boost::asio::ip::tcp::resolver::query query(hostname, service);
-         boost::asio::connect(m_tcp, resolver.resolve(query));
-         }
-
-      void write(const uint8_t buf[], size_t len) override
-         {
-         boost::asio::write(m_tcp, boost::asio::buffer(buf, len));
-         }
-
-      size_t read(uint8_t buf[], size_t len) override
-         {
-         boost::system::error_code error;
-         size_t got = m_tcp.read_some(boost::asio::buffer(buf, len), error);
-
-         if(error)
-            {
-            if(error == boost::asio::error::eof)
-               return 0;
-            throw boost::system::system_error(error); // Some other error.
-            }
-
-         return got;
-         }
-
-   private:
-      boost::asio::io_service m_io;
-      boost::asio::ip::tcp::socket m_tcp;
-   };
-
-#elif defined(BOTAN_TARGET_OS_TYPE_IS_WINDOWS)
-
-class Winsock_Socket final : public OS::Socket
-   {
-   public:
-      Winsock_Socket(const std::string& hostname, const std::string& service)
-         {
-         WSAData wsa_data;
-         WORD wsa_version = MAKEWORD(2, 2);
-
-         if (::WSAStartup(wsa_version, &wsa_data) != 0)
-            {
-            throw Exception("WSAStartup() failed: " + std::to_string(WSAGetLastError()));
-            }
-
-         if (LOBYTE(wsa_data.wVersion) != 2 || HIBYTE(wsa_data.wVersion) != 2)
-            {
-            ::WSACleanup();
-            throw Exception("Could not find a usable version of Winsock.dll");
-            }
-
-         addrinfo hints;
-         ::memset(&hints, 0, sizeof(addrinfo));
-         hints.ai_family = AF_UNSPEC;
-         hints.ai_socktype = SOCK_STREAM;
-         addrinfo* res;
-
-         if(::getaddrinfo(hostname.c_str(), service.c_str(), &hints, &res) != 0)
-            {
-            throw Exception("Name resolution failed for " + hostname);
-            }
-
-         for(addrinfo* rp = res; (m_socket == INVALID_SOCKET) && (rp != nullptr); rp = rp->ai_next)
-            {
-            m_socket = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
-
-            // unsupported socket type?
-            if(m_socket == INVALID_SOCKET)
-               continue;
-
-            if(::connect(m_socket, rp->ai_addr, rp->ai_addrlen) != 0)
-               {
-               ::closesocket(m_socket);
-               m_socket = INVALID_SOCKET;
-               continue;
-               }
-            }
-
-         ::freeaddrinfo(res);
-
-         if(m_socket == INVALID_SOCKET)
-            {
-            throw Exception("Connecting to " + hostname +
-                            " for service " + service + " failed");
-            }
-         }
-
-      ~Winsock_Socket()
-         {
-         ::closesocket(m_socket);
-         m_socket = INVALID_SOCKET;
-         ::WSACleanup();
-         }
-
-      void write(const uint8_t buf[], size_t len) override
-         {
-         size_t sent_so_far = 0;
-         while(sent_so_far != len)
-            {
-            const size_t left = len - sent_so_far;
-            int sent = ::send(m_socket,
-                              cast_uint8_ptr_to_char(buf + sent_so_far),
-                              static_cast<int>(left),
-                              0);
-
-            if(sent == SOCKET_ERROR)
-               throw Exception("Socket write failed with error " +
-                               std::to_string(::WSAGetLastError()));
-            else
-               sent_so_far += static_cast<size_t>(sent);
-            }
-         }
-
-      size_t read(uint8_t buf[], size_t len) override
-         {
-         int got = ::recv(m_socket,
-                          cast_uint8_ptr_to_char(buf),
-                          static_cast<int>(len), 0);
-
-         if(got == SOCKET_ERROR)
-            throw Exception("Socket read failed with error " +
-                            std::to_string(::WSAGetLastError()));
-         return static_cast<size_t>(got);
-         }
-
-   private:
-      SOCKET m_socket = INVALID_SOCKET;
-   };
-
-#elif defined(BOTAN_TARGET_OS_TYPE_IS_UNIX)
-class BSD_Socket final : public OS::Socket
-   {
-   public:
-      BSD_Socket(const std::string& hostname, const std::string& service)
-         {
-         addrinfo hints;
-         ::memset(&hints, 0, sizeof(addrinfo));
-         hints.ai_family = AF_UNSPEC;
-         hints.ai_socktype = SOCK_STREAM;
-         addrinfo* res;
-
-         if(::getaddrinfo(hostname.c_str(), service.c_str(), &hints, &res) != 0)
-            {
-            throw Exception("Name resolution failed for " + hostname);
-            }
-
-         m_fd = -1;
-
-         for(addrinfo* rp = res; (m_fd < 0) && (rp != nullptr); rp = rp->ai_next)
-            {
-            m_fd = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
-
-            if(m_fd < 0)
-               {
-               // unsupported socket type?
-               continue;
-               }
-
-            if(::connect(m_fd, rp->ai_addr, rp->ai_addrlen) != 0)
-               {
-               ::close(m_fd);
-               m_fd = -1;
-               continue;
-               }
-            }
-
-         ::freeaddrinfo(res);
-
-         if(m_fd < 0)
-            {
-            throw Exception("Connecting to " + hostname +
-                            " for service " + service + " failed");
-            }
-         }
-
-      ~BSD_Socket()
-         {
-         ::close(m_fd);
-         m_fd = -1;
-         }
-
-      void write(const uint8_t buf[], size_t len) override
-         {
-         size_t sent_so_far = 0;
-         while(sent_so_far != len)
-            {
-            const size_t left = len - sent_so_far;
-            ssize_t sent = ::write(m_fd, &buf[sent_so_far], left);
-            if(sent < 0)
-               throw Exception("Socket write failed with error '" +
-                               std::string(::strerror(errno)) + "'");
-            else
-               sent_so_far += static_cast<size_t>(sent);
-            }
-         }
-
-      size_t read(uint8_t buf[], size_t len) override
-         {
-         ssize_t got = ::read(m_fd, buf, len);
-
-         if(got < 0)
-            throw Exception("Socket read failed with error '" +
-                            std::string(::strerror(errno)) + "'");
-         return static_cast<size_t>(got);
-         }
-
-   private:
-      int m_fd;
-   };
-
-#endif
-
-}
-
-std::unique_ptr<OS::Socket>
-OS::open_socket(const std::string& hostname,
-                const std::string& service)
-   {
-#if defined(BOTAN_HAS_BOOST_ASIO)
-   return std::unique_ptr<OS::Socket>(new Asio_Socket(hostname, service));
-
-#elif defined(BOTAN_TARGET_OS_TYPE_IS_WINDOWS)
-   return std::unique_ptr<OS::Socket>(new Winsock_Socket(hostname, service));
-
-#elif defined(BOTAN_TARGET_OS_TYPE_IS_UNIX)
-   return std::unique_ptr<OS::Socket>(new BSD_Socket(hostname, service));
-
-#else
-   // No sockets for you
-   return std::unique_ptr<Socket>();
-#endif
-   }
-
 // Not defined in OS namespace for historical reasons
 void secure_scrub_memory(void* ptr, size_t n)
    {