#include <tls_extensions.h>

Inheritance diagram for Botan::TLS::Server_Name_Indicator:

Public Member Functions
bool	empty () const override

std::string	host_name () const

std::vector< uint8_t >	serialize (Connection_Side whoami) const override

	Server_Name_Indicator (const std::string &host_name)

	Server_Name_Indicator (TLS_Data_Reader &reader, uint16_t extension_size)

Handshake_Extension_Type	type () const override

Static Public Member Functions
static Handshake_Extension_Type	static_type ()

Detailed Description

Server Name Indicator extension (RFC 3546)

Definition at line 81 of file tls_extensions.h.

Constructor & Destructor Documentation

Botan::TLS::Server_Name_Indicator::Server_Name_Indicator ( const std::string & host_name )

inlineexplicit

Definition at line 89 of file tls_extensions.h.

89 :

90 m_sni_host_name(host_name) {}

Botan::TLS::Server_Name_Indicator::host_name

std::string host_name() const

Definition: tls_extensions.h:95

Botan::TLS::Server_Name_Indicator::Server_Name_Indicator	(	TLS_Data_Reader &	reader,
		uint16_t	extension_size
	)

Definition at line 164 of file tls_extensions.cpp.

References Botan::TLS::TLS_Data_Reader::discard_next(), Botan::TLS::TLS_Data_Reader::get_byte(), Botan::TLS::TLS_Data_Reader::get_string(), and Botan::TLS::TLS_Data_Reader::get_uint16_t().

    {
    /*
    * This is used by the server to confirm that it knew the name
    */
    if(extension_size == 0)
       return;
 
    uint16_t name_bytes = reader.get_uint16_t();
 
    if(name_bytes + 2 != extension_size)
       throw Decoding_Error("Bad encoding of SNI extension");
 
    while(name_bytes)
       {
       uint8_t name_type = reader.get_byte();
       name_bytes--;
 
       if(name_type == 0) // DNS
          {
          m_sni_host_name = reader.get_string(2, 1, 65535);
          name_bytes -= static_cast<uint16_t>(2 + m_sni_host_name.size());
          }
       else // some other unknown name type
          {
          reader.discard_next(name_bytes);
          name_bytes = 0;
          }
       }
    }

Member Function Documentation

bool Botan::TLS::Server_Name_Indicator::empty ( ) const

inlineoverridevirtual

Returns: if we should encode this extension or not

Implements Botan::TLS::Extension.

Definition at line 99 of file tls_extensions.h.

99 { return m_sni_host_name.empty(); }

std::string Botan::TLS::Server_Name_Indicator::host_name ( ) const

inline

Definition at line 95 of file tls_extensions.h.

95 { return m_sni_host_name; }

std::vector< uint8_t > Botan::TLS::Server_Name_Indicator::serialize ( Connection_Side whoami ) const

overridevirtual

Returns: serialized binary for the extension

Implements Botan::TLS::Extension.

Definition at line 196 of file tls_extensions.cpp.

References Botan::cast_char_ptr_to_uint8(), and Botan::get_byte().

    {
    std::vector<uint8_t> buf;
 
    size_t name_len = m_sni_host_name.size();
 
    buf.push_back(get_byte(0, static_cast<uint16_t>(name_len+3)));
    buf.push_back(get_byte(1, static_cast<uint16_t>(name_len+3)));
    buf.push_back(0); // DNS
 
    buf.push_back(get_byte(0, static_cast<uint16_t>(name_len)));
    buf.push_back(get_byte(1, static_cast<uint16_t>(name_len)));
 
    buf += std::make_pair(
       cast_char_ptr_to_uint8(m_sni_host_name.data()),
       m_sni_host_name.size());
 
    return buf;
    }