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Added TCPTest. Fixed some TCP bugs, most of them related to options.

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This commit is contained in:
Matias Fontanini
2011-09-21 08:46:08 -03:00
parent fc454121b3
commit 7a9fc0f84d
3 changed files with 414 additions and 34 deletions
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121
include/tcp.h
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@@ -66,10 +66,23 @@ namespace Tins {
*/
enum Options {
EOL = 0,
NOP = 1,
MSS = 2,
TSOPT = 8
EOL = 0,
NOP = 1,
MSS = 2,
WSCALE = 3,
SACK_OK = 4,
SACK = 5,
TSOPT = 8,
ALTCHK = 14
};
/**
* \brief Alternate checksum enum.
*/
enum AltChecksums {
CHK_TCP,
CHK_8FLETCHER,
CHK_16FLETCHER
};
/**
@@ -82,8 +95,8 @@ namespace Tins {
* \param olength The option's data length.
* \param odata The option's data(if any).
*/
TCPOption(uint8_t okind = 0, uint8_t olength = 0, uint8_t *odata = 0) :
kind(okind), length(olength), data(odata) { }
TCPOption(uint8_t opt = 0, uint8_t olength = 0, uint8_t *ovalue = 0) :
option(opt), length(olength), value(ovalue) { }
/**
* \brief Writes the option into a buffer.
@@ -92,8 +105,8 @@ namespace Tins {
*/
uint8_t *write(uint8_t *buffer);
uint8_t kind, length;
uint8_t *data;
uint8_t option, length;
uint8_t *value;
};
/**
@@ -275,19 +288,87 @@ namespace Tins {
void payload(uint8_t *new_payload, uint32_t new_payload_size);
/**
* \brief Set the maximum segment size.
* \brief Add a maximum segment size option.
*
* \param value The new maximum segment size.
*/
void set_mss(uint16_t value);
void add_mss_option(uint16_t value);
/**
* \brief Set the timestamp.
* \brief Searchs for a maximum segment size option.
* \param value A pointer in which the option's value will be stored.
* \return True if the option was found, false otherwise.
*/
bool search_mss_option(uint16_t *value);
/**
* \brief Add a window scale option.
*
* \param value The new window scale.
*/
void add_winscale_option(uint8_t value);
/**
* \brief Searchs for a window scale option.
* \param value A pointer in which the option's value will be stored.
* \return True if the option was found, false otherwise.
*/
bool search_winscale_option(uint8_t *value);
/**
* \brief Add a sack permitted option.
*/
void add_sack_permitted_option();
/**
* \brief Searchs for a sack permitted option.
* \return True if the option was found, false otherwise.
*/
bool search_sack_permitted_option();
/**
* \brief Add a sack option.
*
* \param value The new window scale.
*/
void add_sack_option(const std::list<uint32_t> &edges);
/**
* \brief Searchs for a sack option.
* \param value A pointer in which the option's value will be stored.
* \return True if the option was found, false otherwise.
*/
bool search_sack_option(std::list<uint32_t> *edges);
/**
* \brief Add a timestamp option.
*
* \param value The current value of the timestamp clock.
* \param reply The echo reply field.
*/
void set_timestamp(uint32_t value, uint32_t reply);
void add_timestamp_option(uint32_t value, uint32_t reply);
/**
* \brief Searchs for a timestamp option.
* \param value A pointer in which the option's value will be stored.
* \param reply A pointer in which the option's reply value will be stored.
* \return True if the option was found, false otherwise.
*/
bool search_timestamp_option(uint32_t *value, uint32_t *reply);
/**
* \brief Add a alternate checksum option.
*
* \param value The new alternate checksum scale.
*/
void add_altchecksum_option(AltChecksums value);
/**
* \brief Searchs for a alternate checksum option.
* \param value A pointer in which the option's value will be stored.
* \return True if the option was found, false otherwise.
*/
bool search_altchecksum_option(uint8_t *value);
/**
* \brief Set a TCP flag value.
@@ -323,6 +404,13 @@ namespace Tins {
*/
PDUType pdu_type() const { return PDU::TCP; }
/**
* \brief Searchs for an option that matchs the given flag.
* \param opt_flag The flag to be searched.
* \return A pointer to the option, or 0 if it was not found.
*/
const TCPOption *search_option(Options opt) const;
/**
* \brief Clones this PDU.
*
@@ -369,6 +457,15 @@ namespace Tins {
void copy_fields(const TCP *other);
template<class T> bool generic_search(Options opt, T *value) {
const TCPOption *option = search_option(opt);
if(option && option->length == sizeof(T)) {
*value = *(T*)option->value;
return true;
}
return false;
}
void cleanup();
/** \brief Serialices this TCP PDU.
* \param buffer The buffer in which the PDU will be serialized.