Add TLS::Session_Manager_Noop which just ignores all save requests.

Rename the sqlite module to sqlite3 as sometimes plain 'sqlite' is
used to refer to sqlite2.

Reduce the password check bits to 16 which is plenty.

3 files changed, 220 insertions, 0 deletions

diff --git a/src/utils/sqlite3/info.txt b/src/utils/sqlite3/info.txt
new file mode 100644
index 000000000..97d59d697
--- /dev/null
+++ b/src/utils/sqlite3/info.txt
@@ -0,0 +1,14 @@
+
+load_on request
+
+<libs>
+all -> sqlite3
+</libs>
+
+<header:internal>
+sqlite3.h
+</header:internal>
+
+<source>
+sqlite3.cpp
+</source>
diff --git a/src/utils/sqlite3/sqlite3.cpp b/src/utils/sqlite3/sqlite3.cpp
new file mode 100644
index 000000000..94b55a555
--- /dev/null
+++ b/src/utils/sqlite3/sqlite3.cpp
@@ -0,0 +1,138 @@
+/*
+* SQLite wrapper
+* (C) 2012 Jack Lloyd
+*
+* Released under the terms of the Botan license
+*/
+
+#include <botan/internal/sqlite3.h>
+#include <botan/internal/assert.h>
+#include <stdexcept>
+#include <sqlite3.h>
+
+namespace Botan {
+
+sqlite3_database::sqlite3_database(const std::string& db_filename)
+   {
+   int rc = ::sqlite3_open(db_filename.c_str(), &m_db);
+
+   if(rc)
+      {
+      const std::string err_msg = ::sqlite3_errmsg(m_db);
+      ::sqlite3_close(m_db);
+      m_db = nullptr;
+      throw std::runtime_error("sqlite3_open failed - " + err_msg);
+      }
+   }
+
+sqlite3_database::~sqlite3_database()
+   {
+   if(m_db)
+      ::sqlite3_close(m_db);
+   m_db = nullptr;
+   }
+
+size_t sqlite3_database::row_count(const std::string& table_name)
+   {
+   sqlite3_statement stmt(this, "select count(*) from " + table_name);
+
+   if(stmt.step())
+      return stmt.get_size_t(0);
+   else
+      throw std::runtime_error("Querying size of table " + table_name + " failed");
+   }
+
+void sqlite3_database::create_table(const std::string& table_schema)
+   {
+   char* errmsg = 0;
+   int rc = ::sqlite3_exec(m_db, table_schema.c_str(), 0, 0, &errmsg);
+
+   if(rc != SQLITE_OK)
+      {
+      const std::string err_msg = errmsg;
+      ::sqlite3_free(errmsg);
+      ::sqlite3_close(m_db);
+      m_db = nullptr;
+      throw std::runtime_error("sqlite3_exec for table failed - " + err_msg);
+      }
+   }
+
+
+sqlite3_statement::sqlite3_statement(sqlite3_database* db, const std::string& base_sql)
+   {
+   int rc = ::sqlite3_prepare_v2(db->m_db, base_sql.c_str(), -1, &m_stmt, 0);
+
+   if(rc != SQLITE_OK)
+      throw std::runtime_error("sqlite3_prepare failed " + base_sql +
+                               ", code " + std::to_string(rc));
+   }
+
+void sqlite3_statement::bind(int column, const std::string& val)
+   {
+   int rc = ::sqlite3_bind_text(m_stmt, column, val.c_str(), -1, SQLITE_TRANSIENT);
+   if(rc != SQLITE_OK)
+      throw std::runtime_error("sqlite3_bind_text failed, code " + std::to_string(rc));
+   }
+
+void sqlite3_statement::bind(int column, int val)
+   {
+   int rc = ::sqlite3_bind_int(m_stmt, column, val);
+   if(rc != SQLITE_OK)
+      throw std::runtime_error("sqlite3_bind_int failed, code " + std::to_string(rc));
+   }
+
+void sqlite3_statement::bind(int column, std::chrono::system_clock::time_point time)
+   {
+   const int timeval = std::chrono::duration_cast<std::chrono::seconds>(time.time_since_epoch()).count();
+   bind(column, timeval);
+   }
+
+void sqlite3_statement::bind(int column, const std::vector<byte>& val)
+   {
+   int rc = ::sqlite3_bind_blob(m_stmt, column, &val[0], val.size(), SQLITE_TRANSIENT);
+   if(rc != SQLITE_OK)
+      throw std::runtime_error("sqlite3_bind_text failed, code " + std::to_string(rc));
+   }
+
+std::pair<const byte*, size_t> sqlite3_statement::get_blob(int column)
+   {
+   BOTAN_ASSERT(::sqlite3_column_type(m_stmt, 0) == SQLITE_BLOB,
+                "Return value is a blob");
+
+   const void* session_blob = ::sqlite3_column_blob(m_stmt, column);
+   const int session_blob_size = ::sqlite3_column_bytes(m_stmt, column);
+
+   BOTAN_ASSERT(session_blob_size >= 0, "Blob size is non-negative");
+
+   return std::make_pair(static_cast<const byte*>(session_blob),
+                         static_cast<size_t>(session_blob_size));
+   }
+
+size_t sqlite3_statement::get_size_t(int column)
+   {
+   BOTAN_ASSERT(::sqlite3_column_type(m_stmt, column) == SQLITE_INTEGER,
+                "Return count is an integer");
+
+   const int sessions_int = ::sqlite3_column_int(m_stmt, column);
+
+   BOTAN_ASSERT(sessions_int >= 0, "Expected size_t is non-negative");
+
+   return static_cast<size_t>(sessions_int);
+   }
+
+void sqlite3_statement::spin()
+   {
+   while(step()) {}
+   }
+
+bool sqlite3_statement::step()
+   {
+   return (::sqlite3_step(m_stmt) == SQLITE_ROW);
+   }
+
+sqlite3_statement::~sqlite3_statement()
+   {
+   ::sqlite3_finalize(m_stmt);
+   }
+
+}
diff --git a/src/utils/sqlite3/sqlite3.h b/src/utils/sqlite3/sqlite3.h
new file mode 100644
index 000000000..aef04ab4d
--- /dev/null
+++ b/src/utils/sqlite3/sqlite3.h
@@ -0,0 +1,68 @@
+/*
+* SQLite wrapper
+* (C) 2012 Jack Lloyd
+*
+* Released under the terms of the Botan license
+*/
+
+#ifndef BOTAN_UTILS_SQLITE_WRAPPER_H__
+#define BOTAN_UTILS_SQLITE_WRAPPER_H__
+
+#include <botan/types.h>
+#include <string>
+#include <chrono>
+#include <vector>
+
+class sqlite3;
+class sqlite3_stmt;
+
+namespace Botan {
+
+class sqlite3_database
+   {
+   public:
+      sqlite3_database(const std::string& file);
+
+      ~sqlite3_database();
+
+      size_t row_count(const std::string& table_name);
+
+      void create_table(const std::string& table_schema);
+   private:
+      friend class sqlite3_statement;
+
+      sqlite3* m_db;
+   };
+
+class sqlite3_statement
+   {
+   public:
+      sqlite3_statement(sqlite3_database* db,
+                        const std::string& base_sql);
+
+      void bind(int column, const std::string& val);
+
+      void bind(int column, int val);
+
+      void bind(int column, std::chrono::system_clock::time_point time);
+
+      void bind(int column, const std::vector<byte>& val);
+
+      std::pair<const byte*, size_t> get_blob(int column);
+
+      size_t get_size_t(int column);
+
+      void spin();
+
+      bool step();
+
+      sqlite3_stmt* stmt() { return m_stmt; }
+
+      ~sqlite3_statement();
+   private:
+      sqlite3_stmt* m_stmt;
+   };
+
+}
+
+#endif