support.cc File Reference

#include "squid.h"
#include "acl/FilledChecklist.h"
#include "anyp/Host.h"
#include "anyp/PortCfg.h"
#include "anyp/Uri.h"
#include "fatal.h"
#include "fd.h"
#include "fde.h"
#include "globals.h"
#include "ip/Address.h"
#include "ipc/MemMap.h"
#include "security/CertError.h"
#include "security/Certificate.h"
#include "security/ErrorDetail.h"
#include "security/Session.h"
#include "SquidConfig.h"
#include "ssl/bio.h"
#include "ssl/Config.h"
#include "ssl/ErrorDetail.h"
#include "ssl/gadgets.h"
#include "ssl/support.h"
#include <cerrno>

Include dependency graph for support.cc:

Go to the source code of this file.

Classes
class	Ssl::OneNameMatcher
	GeneralNameMatcher for matching a single AnyP::Host given at construction time. More...

Namespaces
	Ssl

Functions
static void	ssl_ask_password (SSL_CTX *context, const char *prompt)
static std::optional< AnyP::Host >	ParseSubjectAltName (const GENERAL_NAME &san)
static int	ssl_verify_cb (int ok, X509_STORE_CTX *ctx)
static int	VerifyCtxCertificates (X509_STORE_CTX *ctx, STACK_OF(X509) *extraCerts)
static int	ssl_dupAclChecklist (CRYPTO_EX_DATA *, CRYPTO_EX_DATA *, void *, int, long, void *)
static void	ssl_freeAclChecklist (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_ErrorDetail (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_SslErrors (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_int (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_CertChain (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_X509 (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_SBuf (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
static void	ssl_free_VerifyCallbackParameters (void *, void *ptr, CRYPTO_EX_DATA *, int, long, void *)
	"free" function for the ssl_ex_index_verify_callback_parameters entry More...
static const char *	ssl_get_attribute (X509_NAME *name, const char *attribute_name)
const char *	sslGetUserAttribute (SSL *ssl, const char *attribute_name)
const char *	sslGetCAAttribute (SSL *ssl, const char *attribute_name)
const char *	sslGetUserEmail (SSL *ssl)
SBuf	sslGetUserCertificatePEM (SSL *ssl)
SBuf	sslGetUserCertificateChainPEM (SSL *ssl)
static X509 *	findCertIssuerFast (Ssl::CertsIndexedList &list, X509 *cert)
static X509 *	sk_x509_findIssuer (const STACK_OF(X509) *sk, X509 *cert)
	slowly find the issuer certificate of a given cert using linear search More...
static X509 *	findIssuerInCaDb (X509 *cert, const Security::ContextPointer &connContext)
static void	completeIssuers (X509_STORE_CTX *ctx, STACK_OF(X509) &untrustedCerts)
	add missing issuer certificates to untrustedCerts More...
static int	untrustedToStoreCtx_cb (X509_STORE_CTX *ctx, void *)
static int	bio_sbuf_create (BIO *bio)
static int	bio_sbuf_destroy (BIO *bio)
static int	bio_sbuf_write (BIO *bio, const char *data, int len)
static int	bio_sbuf_puts (BIO *bio, const char *data)
static long	bio_sbuf_ctrl (BIO *bio, int cmd, long, void *)

Variables
static int	ssl_ex_index_verify_callback_parameters = -1
static Ssl::CertsIndexedList	SquidUntrustedCerts

Function Documentation

bio_sbuf_create()

static int bio_sbuf_create ( BIO *  bio )

static

Definition at line 1508 of file support.cc.

References BIO_set_data(), and BIO_set_init().

Referenced by Ssl::BIO_new_SBuf().

bio_sbuf_ctrl()

static long bio_sbuf_ctrl ( BIO *  bio, int  cmd, long  , void *    )

static

Definition at line 1543 of file support.cc.

References BIO_get_data(), and SBuf::clear().

Referenced by Ssl::BIO_new_SBuf().

bio_sbuf_destroy()

static int bio_sbuf_destroy ( BIO *  bio )

static

Definition at line 1516 of file support.cc.

Referenced by Ssl::BIO_new_SBuf().

bio_sbuf_puts()

static int bio_sbuf_puts ( BIO *  bio, const char *  data  )

static

Definition at line 1533 of file support.cc.

References SBuf::append(), BIO_get_data(), and SBuf::length().

Referenced by Ssl::BIO_new_SBuf().

bio_sbuf_write()

static int bio_sbuf_write ( BIO *  bio, const char *  data, int  len  )

static

Definition at line 1524 of file support.cc.

References SBuf::append(), and BIO_get_data().

Referenced by Ssl::BIO_new_SBuf().

completeIssuers()

static void completeIssuers ( X509_STORE_CTX *  ctx, STACK_OF(X509) &  untrustedCerts  )

static

Definition at line 1347 of file support.cc.

References debugs, Ssl::findIssuerCertificate(), Security::LockingPointer< T, UnLocker, Locker >::get(), Security::LockingPointer< T, UnLocker, Locker >::resetAndLock(), Security::SelfSigned(), SquidUntrustedCerts, X509_STORE_CTX_get0_cert(), and X509_VERIFY_PARAM_get_depth().

Referenced by VerifyCtxCertificates().

findCertIssuerFast()

static X509* findCertIssuerFast ( Ssl::CertsIndexedList &  list, X509 *  cert  )

static

quickly find the issuer certificate of a certificate cert in the Ssl::CertsIndexedList list

Definition at line 1230 of file support.cc.

References Security::IssuedBy(), and Security::IssuerName().

Referenced by Ssl::findIssuerCertificate().

findIssuerInCaDb()

static X509* findIssuerInCaDb ( X509 *  cert, const Security::ContextPointer &  connContext  )

static

finds issuer of a given certificate in CA store of the given connContext

Returns

the cert issuer (after increasing its reference count) or nil

Definition at line 1265 of file support.cc.

References assert, DBG_IMPORTANT, debugs, and Security::ErrorString().

Referenced by Ssl::findIssuerCertificate().

ParseSubjectAltName()

static std::optional<AnyP::Host> ParseSubjectAltName ( const GENERAL_NAME &  san )

static

Definition at line 258 of file support.cc.

References Ssl::AsnToSBuf(), Assure, debugs, AnyP::Host::ParseIp(), and AnyP::Host::ParseWildDomainName().

Referenced by Ssl::HasMatchingSubjectName().

sk_x509_findIssuer()

static X509* sk_x509_findIssuer ( const STACK_OF(X509) *  sk, X509 *  cert  )

static

Definition at line 1248 of file support.cc.

References Security::IssuedBy().

Referenced by Ssl::findIssuerCertificate().

ssl_dupAclChecklist()

static int ssl_dupAclChecklist ( CRYPTO_EX_DATA *  , CRYPTO_EX_DATA *  , void *  , int  , long  , void *    )

static

Definition at line 660 of file support.cc.

References assert.

Referenced by Ssl::Initialize().

ssl_free_ErrorDetail()

static void ssl_free_ErrorDetail ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 680 of file support.cc.

Referenced by Ssl::Initialize().

ssl_free_int()

static void ssl_free_int ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 697 of file support.cc.

Referenced by Ssl::Initialize().

ssl_free_SBuf()

static void ssl_free_SBuf ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 726 of file support.cc.

Referenced by Ssl::Initialize().

ssl_free_SslErrors()

static void ssl_free_SslErrors ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 688 of file support.cc.

Referenced by Ssl::Initialize().

ssl_free_VerifyCallbackParameters()

static void ssl_free_VerifyCallbackParameters ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 735 of file support.cc.

Referenced by Ssl::Initialize().

ssl_free_X509()

static void ssl_free_X509 ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 717 of file support.cc.

Referenced by Ssl::Initialize().

ssl_freeAclChecklist()

static void ssl_freeAclChecklist ( void *  , void *  ptr, CRYPTO_EX_DATA *  , int  , long  , void *    )

static

Definition at line 672 of file support.cc.

Referenced by Ssl::Initialize().

ssl_verify_cb()

static int ssl_verify_cb ( int  ok, X509_STORE_CTX *  ctx  )

static

adjusts OpenSSL validation results for each verified certificate in ctx OpenSSL "verify_callback function" (OpenSSL_vcb_disambiguation)

Definition at line 341 of file support.cc.

References Acl::Answer::allowed(), DBG_IMPORTANT, debugs, ACLChecklist::fastCheck(), Filled(), Ssl::VerifyCallbackParameters::Find(), Security::LockingPointer< T, UnLocker, Locker >::get(), Ssl::GetErrorDescr(), Ssl::HasSubjectName(), Ssl::ParseAsSimpleDomainNameOrIp(), CbDataList< C >::push_back_unique(), Security::LockingPointer< T, UnLocker, Locker >::reset(), Security::LockingPointer< T, UnLocker, Locker >::resetAndLock(), server, ACLFilledChecklist::serverCert, SQUID_CERT_VALIDATION_ITERATION_MAX, SQUID_X509_V_ERR_CERT_CHANGE, SQUID_X509_V_ERR_DOMAIN_MISMATCH, SQUID_X509_V_ERR_INFINITE_VALIDATION, ssl_ctx_ex_index_dont_verify_domain, ssl_ex_index_cert_error_check, ssl_ex_index_server, ssl_ex_index_ssl_cert_chain, ssl_ex_index_ssl_error_detail, ssl_ex_index_ssl_errors, ssl_ex_index_ssl_peeked_cert, ssl_ex_index_ssl_validation_counter, ACLFilledChecklist::sslErrors, STACK_OF(), Ssl::TheConfig, and X509_STORE_CTX_get0_cert().

Referenced by Ssl::ConfigurePeerVerification().

untrustedToStoreCtx_cb()

static int untrustedToStoreCtx_cb ( X509_STORE_CTX *  ctx, void *    )

static

Validates certificates while consulting sslproxy_foreign_intermediate_certs but without using any dynamically downloaded intermediate certificates. OpenSSL "verification callback function" (OpenSSL_vcb_disambiguation)

Definition at line 1429 of file support.cc.

References debugs, and VerifyCtxCertificates().

Referenced by Ssl::useSquidUntrusted().

VerifyCtxCertificates()

static int VerifyCtxCertificates ( X509_STORE_CTX *  ctx, STACK_OF(X509) *  extraCerts  )

static

Validates certificates while consulting sslproxy_foreign_intermediate_certs and, optionally, the given extra certificates.

Returns

whatever OpenSSL X509_verify_cert() returns

Definition at line 1381 of file support.cc.

References completeIssuers(), SquidUntrustedCerts, STACK_OF(), and X509_STORE_CTX_set0_untrusted.

Referenced by untrustedToStoreCtx_cb(), and Ssl::VerifyConnCertificates().

Variable Documentation

SquidUntrustedCerts

Ssl::CertsIndexedList SquidUntrustedCerts

static

Definition at line 44 of file support.cc.

Referenced by completeIssuers(), Ssl::findIssuerCertificate(), Ssl::loadSquidUntrusted(), Ssl::unloadSquidUntrusted(), and VerifyCtxCertificates().

ssl_ex_index_verify_callback_parameters

int ssl_ex_index_verify_callback_parameters = -1

static

Definition at line 42 of file support.cc.

Referenced by Ssl::VerifyCallbackParameters::Find(), Ssl::Initialize(), and Ssl::VerifyCallbackParameters::New().