#include <bio.h>
Public Member Functions | |
| ServerBio (const int anFd) | |
| virtual void | stateChanged (const SSL *ssl, int where, int ret) |
| The ServerBio version of the Ssl::Bio::stateChanged method. More... | |
| virtual int | write (const char *buf, int size, BIO *table) |
| virtual int | read (char *buf, int size, BIO *table) |
| virtual void | flush (BIO *table) |
| void | setClientFeatures (Security::TlsDetails::Pointer const &details, SBuf const &hello) |
| Sets the random number to use in client SSL HELLO message. More... | |
| bool | resumingSession () |
| bool | encryptedCertificates () const |
| bool | holdWrite () const |
| The write hold state. More... | |
| void | holdWrite (bool h) |
| Enables or disables the write hold state. More... | |
| bool | holdRead () const |
| The read hold state. More... | |
| void | holdRead (bool h) |
| Enables or disables the read hold state. More... | |
| void | recordInput (bool r) |
| Enables or disables the input data recording, for internal analysis. More... | |
| bool | canSplice () |
| Whether we can splice or not the SSL stream. More... | |
| bool | canBump () |
| Whether we can bump or not the SSL stream. More... | |
| void | mode (Ssl::BumpMode m) |
| The bumping mode. More... | |
| bool | gotHello () const |
| bool | gotHelloFailed () const |
| Return true if the Server Hello parsing failed. More... | |
| const Security::CertList & | serverCertificatesIfAny () |
| const Security::TlsDetails::Pointer & | receivedHelloDetails () const |
Static Public Member Functions | |
| static BIO * | Create (const int fd, Security::Io::Type type) |
| static void | Link (SSL *ssl, BIO *bio) |
| Tells ssl connection to use BIO and monitor state via stateChanged() More... | |
Protected Attributes | |
| const int | fd_ |
| the SSL socket we are reading and writing More... | |
| SBuf | rbuf |
| Used to buffer input data. More... | |
Private Member Functions | |
| int | readAndGive (char *buf, const int size, BIO *table) |
| Read and give everything to OpenSSL. More... | |
| int | readAndParse (char *buf, const int size, BIO *table) |
| int | readAndBuffer (BIO *table) |
| int | giveBuffered (char *buf, const int size) |
Private Attributes | |
| Security::TlsDetails::Pointer | clientTlsDetails |
| SSL client features extracted from ClientHello message or SSL object. More... | |
| SBuf | clientSentHello |
| TLS client hello message, used to adapt our tls Hello message to the server. More... | |
| SBuf | helloMsg |
| Used to buffer output data. More... | |
| mb_size_t | helloMsgSize |
| bool | helloBuild |
| True if the client hello message sent to the server. More... | |
| bool | allowSplice |
| True if the SSL stream can be spliced. More... | |
| bool | allowBump |
| True if the SSL stream can be bumped. More... | |
| bool | holdWrite_ |
| The write hold state of the bio. More... | |
| bool | holdRead_ |
| The read hold state of the bio. More... | |
| bool | record_ |
| If true the input data recorded to rbuf for internal use. More... | |
| bool | parsedHandshake |
| whether we are done parsing TLS Hello More... | |
| bool | parseError |
| error while parsing server hello message More... | |
| Ssl::BumpMode | bumpMode_ |
| size_t | rbufConsumePos |
| The size of data stored in rbuf which passed to the openSSL. More... | |
| Security::HandshakeParser | parser_ |
| The TLS/SSL messages parser. More... | |
Detailed Description
BIO node to handle socket IO for squid server side If bumping is enabled, analyses the SSL hello message sent by squid OpenSSL subsystem (step3 bumping step) against bumping mode:
- Peek mode: Send client hello message instead of the openSSL generated hello message and normally denies bumping and allow only splice or terminate the SSL connection
- Stare mode: Sends the openSSL generated hello message and normally denies splicing and allow bump or terminate the SSL connection If SQUID_USE_OPENSSL_HELLO_OVERWRITE_HACK is enabled also checks if the openSSL library features are compatible with the features reported in web client SSL hello message and if it is, overwrites the openSSL SSL object members to replace hello message with web client hello message. This is may allow bumping in peek mode and splicing in stare mode after the server hello message received.
Constructor & Destructor Documentation
◆ ServerBio()
Member Function Documentation
◆ canBump()
|
inline |
Definition at line 163 of file bio.h.
References allowBump.
Referenced by Ssl::PeekingPeerConnector::checkForPeekAndSplice().
◆ canSplice()
|
inline |
Definition at line 161 of file bio.h.
References allowSplice.
Referenced by Ssl::PeekingPeerConnector::checkForPeekAndSplice().
◆ Create()
|
staticinherited |
Creates a low-level BIO table, creates a high-level Ssl::Bio object for a given socket, and then links the two together via BIO_C_SET_FD.
Definition at line 62 of file bio.cc.
References NULL, squid_bio_create(), squid_bio_ctrl(), squid_bio_destroy(), squid_bio_puts(), squid_bio_read(), squid_bio_write(), SquidMethods, and type.
Referenced by CreateSession().
◆ encryptedCertificates()
| bool Ssl::ServerBio::encryptedCertificates | ( | ) | const |
whether the server encrypts its certificate (e.g., TLS v1.3)
- Return values
-
false the server uses plain certs or its intent is unknown
Definition at line 559 of file bio.cc.
References Security::Tls1p3orLater().
Referenced by Ssl::PeekingPeerConnector::noteNegotiationError().
◆ flush()
|
virtual |
The ServerBio version of the Ssl::Bio::flush method. Flushes any buffered data
Reimplemented from Ssl::Bio.
Definition at line 544 of file bio.cc.
References Ssl::Bio::write().
◆ giveBuffered()
◆ gotHello()
|
inline |
- Return values
-
true if the Server hello message received
Definition at line 169 of file bio.h.
References parsedHandshake, and parseError.
Referenced by Security::PeerConnector::noteWantRead().
◆ gotHelloFailed()
|
inline |
Definition at line 172 of file bio.h.
References parsedHandshake, and parseError.
Referenced by Security::PeerConnector::noteWantRead().
◆ holdRead() [1/2]
|
inline |
Definition at line 155 of file bio.h.
References holdRead_.
Referenced by Security::PeerConnector::certDownloadingDone(), and Security::PeerConnector::noteWantRead().
◆ holdRead() [2/2]
|
inline |
◆ holdWrite() [1/2]
|
inline |
Definition at line 151 of file bio.h.
References holdWrite_.
Referenced by Ssl::PeekingPeerConnector::checkForPeekAndSpliceMatched(), Ssl::PeekingPeerConnector::noteNegotiationError(), and Ssl::PeekingPeerConnector::noteWantWrite().
◆ holdWrite() [2/2]
|
inline |
Definition at line 153 of file bio.h.
References holdWrite_.
◆ Link()
|
staticinherited |
◆ mode()
|
inline |
Definition at line 165 of file bio.h.
References bumpMode_.
Referenced by Ssl::PeekingPeerConnector::initialize().
◆ read()
◆ readAndBuffer()
|
private |
Reads more data into the read buffer. Returns either the number of bytes read or, on errors (including "try again" errors), a negative number.
Definition at line 334 of file bio.cc.
References Ssl::Bio::read().
◆ readAndGive()
Definition at line 282 of file bio.cc.
References buf, Ssl::Bio::read(), and size.
◆ readAndParse()
◆ receivedHelloDetails()
|
inline |
- Returns
- the TLS Details advertised by TLS server.
Definition at line 178 of file bio.h.
References Security::HandshakeParser::details, and parser_.
Referenced by Security::PeerConnector::recordNegotiationDetails().
◆ recordInput()
|
inline |
Definition at line 159 of file bio.h.
References record_.
Referenced by Ssl::PeekingPeerConnector::checkForPeekAndSpliceMatched(), and Ssl::PeekingPeerConnector::initialize().
◆ resumingSession()
| bool Ssl::ServerBio::resumingSession | ( | ) |
Definition at line 553 of file bio.cc.
Referenced by Ssl::PeekingPeerConnector::noteNegotiationError().
◆ serverCertificatesIfAny()
|
inline |
- Returns
- the server certificates list if received and parsed correctly
Definition at line 175 of file bio.h.
References parser_, and Security::HandshakeParser::serverCertificates.
Referenced by Security::PeerConnector::certDownloadingDone(), and Security::PeerConnector::checkForMissingCertificates().
◆ setClientFeatures()
| void Ssl::ServerBio::setClientFeatures | ( | Security::TlsDetails::Pointer const & | details, |
| SBuf const & | hello | ||
| ) |
Definition at line 265 of file bio.cc.
Referenced by Ssl::PeekingPeerConnector::initialize().
◆ stateChanged()
Reimplemented from Ssl::Bio.
Definition at line 259 of file bio.cc.
References Ssl::Bio::stateChanged().
◆ write()
The ServerBio version of the Ssl::Bio::write method If a clientRandom number is set then rewrites the raw hello message "client random" field with the provided random number. It may buffer the output packets.
Reimplemented from Ssl::Bio.
Definition at line 468 of file bio.cc.
References adjustSSL(), assert, buf, Ssl::bumpPeek, Ssl::bumpStare, debugs, fd_table, Must, size, and Ssl::Bio::write().
Member Data Documentation
◆ allowBump
|
private |
◆ allowSplice
|
private |
Definition at line 193 of file bio.h.
Referenced by canSplice().
◆ bumpMode_
|
private |
◆ clientSentHello
◆ clientTlsDetails
|
private |
◆ fd_
|
protectedinherited |
Definition at line 63 of file bio.h.
Referenced by Ssl::Bio::Bio().
◆ helloBuild
◆ helloMsg
◆ helloMsgSize
◆ holdRead_
|
private |
Definition at line 196 of file bio.h.
Referenced by holdRead().
◆ holdWrite_
|
private |
Definition at line 195 of file bio.h.
Referenced by holdWrite().
◆ parsedHandshake
|
private |
Definition at line 198 of file bio.h.
Referenced by gotHello(), and gotHelloFailed().
◆ parseError
|
private |
Definition at line 199 of file bio.h.
Referenced by gotHello(), and gotHelloFailed().
◆ parser_
|
private |
Definition at line 204 of file bio.h.
Referenced by receivedHelloDetails(), and serverCertificatesIfAny().
◆ rbuf
|
protectedinherited |
Definition at line 64 of file bio.h.
Referenced by Ssl::ClientBio::setReadBufData().
◆ rbufConsumePos
◆ record_
|
private |
Definition at line 197 of file bio.h.
Referenced by recordInput().
The documentation for this class was generated from the following files: