classic_greeting_forwarder.cc File Reference

#include "classic_greeting_forwarder.h"
#include <cctype>
#include <memory>
#include <optional>
#include <random>
#include <sstream>
#include <system_error>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#include "await_client_or_server.h"
#include "classic_auth.h"
#include "classic_auth_caching_sha2.h"
#include "classic_auth_cleartext.h"
#include "classic_auth_forwarder.h"
#include "classic_auth_native.h"
#include "classic_auth_sha256_password.h"
#include "classic_change_user_forwarder.h"
#include "classic_connect.h"
#include "classic_connection_base.h"
#include "classic_frame.h"
#include "classic_lazy_connect.h"
#include "classic_query_sender.h"
#include "harness_assert.h"
#include "hexify.h"
#include "mysql/harness/logging/logger.h"
#include "mysql/harness/logging/logging.h"
#include "mysql/harness/net_ts/socket.h"
#include "mysql/harness/stdx/expected.h"
#include "mysql/harness/tls_error.h"
#include "mysqld_error.h"
#include "mysqlrouter/classic_protocol_constants.h"
#include "mysqlrouter/classic_protocol_message.h"
#include "mysqlrouter/connection_base.h"
#include "openssl_msg.h"
#include "openssl_version.h"
#include "processor.h"
#include "router_require.h"
#include "tls_content_type.h"
#include "tracer.h"

Classes
class	SendProcessor< toServer >

Functions
static std::vector< std::pair< std::string, std::string > >	client_ssl_connection_attributes (const SSL *ssl)
	router specific connection attributes. More...
template<class T >
std::vector< T >	vector_splice (std::vector< T > v, const std::vector< T > &other)
	splice two vectors together. More...
static std::optional< std::string >	scramble_them_all (std::string_view auth_method, std::string_view nonce, std::string_view pwd)
static void	ssl_msg_cb (int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
static void	adjust_supported_capabilities (SslMode source_ssl_mode, SslMode dest_ssl_mode, classic_protocol::capabilities::value_type &caps)
static stdx::expected< size_t, std::error_code >	send_ssl_connection_error_msg (MysqlRoutingClassicConnectionBase::ClientSideConnection &conn, std::string_view msg)
static auto	strip_trailing_null (std::string_view s)
	remove trailing \0 in a string_view. More...
static bool	server_ssl_mode_is_satisfied (SslMode server_ssl_mode, classic_protocol::capabilities::value_type server_capabilities)
static stdx::expected< size_t, std::error_code >	classic_proto_append_attribute (std::string &attrs_buf, const std::string &key, const std::string &value)
static stdx::expected< void, std::error_code >	classic_proto_verify_connection_attributes (const std::string &attrs)
	verify connection attributes are sane. More...
static stdx::expected< std::string, std::error_code >	classic_proto_decode_and_add_connection_attributes (std::string attrs, const std::vector< std::pair< std::string, std::string > > &extra_attributes)
	merge connection attributes. More...
static stdx::expected< TlsClientContext *, std::error_code >	get_dest_ssl_ctx (MySQLRoutingContext &ctx, const std::optional< mysql_harness::Destination > &opt_dest)
static TlsErrc	forward_tls (Channel &src_channel, Channel &dst_channel)

Function Documentation

adjust_supported_capabilities()

static void adjust_supported_capabilities ( SslMode  source_ssl_mode, SslMode  dest_ssl_mode, classic_protocol::capabilities::value_type &  caps  )

static

classic_proto_append_attribute()

static stdx::expected< size_t, std::error_code > classic_proto_append_attribute ( std::string &  attrs_buf, const std::string &  key, const std::string &  value  )

static

classic_proto_decode_and_add_connection_attributes()

static stdx::expected< std::string, std::error_code > classic_proto_decode_and_add_connection_attributes ( std::string  attrs, const std::vector< std::pair< std::string, std::string > > &  extra_attributes  )

static

merge connection attributes.

• verifies the connection attributes
• appends new attributes.
• sets attributes back to the client-greeting-msg

Returns

bytes appended on success, std::error_code on error.

classic_proto_verify_connection_attributes()

static stdx::expected< void, std::error_code > classic_proto_verify_connection_attributes ( const std::string &  attrs )

static

verify connection attributes are sane.

connection attributes are a key-value-key-value-...

• decodes as var-string
• each key must have a value

client_ssl_connection_attributes()

static std::vector< std::pair< std::string, std::string > > client_ssl_connection_attributes ( const SSL *  ssl )

static

router specific connection attributes.

Parameters

[in]

ssl

pointer to a SSL struct of the client connection. May be nullptr.

forward_tls()

static TlsErrc forward_tls ( Channel &  src_channel, Channel &  dst_channel  )

static

get_dest_ssl_ctx()

static stdx::expected< TlsClientContext *, std::error_code > get_dest_ssl_ctx ( MySQLRoutingContext &  ctx, const std::optional< mysql_harness::Destination > &  opt_dest  )

static

scramble_them_all()

static std::optional< std::string > scramble_them_all ( std::string_view  auth_method, std::string_view  nonce, std::string_view  pwd  )

static

send_ssl_connection_error_msg()

static stdx::expected< size_t, std::error_code > send_ssl_connection_error_msg ( MysqlRoutingClassicConnectionBase::ClientSideConnection &  conn, std::string_view  msg  )

static

server_ssl_mode_is_satisfied()

static bool server_ssl_mode_is_satisfied ( SslMode  server_ssl_mode, classic_protocol::capabilities::value_type  server_capabilities  )

static

ssl_msg_cb()

static void ssl_msg_cb ( int  write_p, int  version, int  content_type, const void *  buf, size_t  len, SSL *  ssl, void *  arg  )

static

strip_trailing_null()

static auto strip_trailing_null ( std::string_view  s )

static

remove trailing \0 in a string_view.

returns the original string-view, if there is no trailing NUL-char.

vector_splice()

template<class T >

std::vector< T > vector_splice	(	std::vector< T >	v,
		const std::vector< T > &	other
	)

splice two vectors together.

appends all elements of other to the vector v.