diff options
Diffstat (limited to 'src/charon/credentials/credential_manager.c')
| -rw-r--r-- | src/charon/credentials/credential_manager.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/charon/credentials/credential_manager.c b/src/charon/credentials/credential_manager.c index 875b62d80..1d20a1e1e 100644 --- a/src/charon/credentials/credential_manager.c +++ b/src/charon/credentials/credential_manager.c @@ -938,6 +938,60 @@ static cert_validation_t check_crl(private_credential_manager_t *this, } /** + * check a certificate for optional IP address block constraints + */ +static bool check_ip_addr_block_constraints(x509_t *subject, x509_t *issuer) +{ + bool subject_constraint = subject->get_flags(subject) & X509_IP_ADDR_BLOCKS; + bool issuer_constraint = issuer->get_flags(issuer) & X509_IP_ADDR_BLOCKS; + bool contained = TRUE; + + enumerator_t *subject_enumerator, *issuer_enumerator; + traffic_selector_t *subject_ts, *issuer_ts; + + if (!subject_constraint && !issuer_constraint) + { + return TRUE; + } + if (!subject_constraint) + { + DBG1(DBG_CFG, "subject certficate lacks ipAddrBlocks extension"); + return FALSE; + } + if (!issuer_constraint) + { + DBG1(DBG_CFG, "issuer certficate lacks ipAddrBlocks extension"); + return FALSE; + } + subject_enumerator = subject->create_ipAddrBlock_enumerator(subject); + while (subject_enumerator->enumerate(subject_enumerator, &subject_ts)) + { + contained = FALSE; + + issuer_enumerator = issuer->create_ipAddrBlock_enumerator(issuer); + while (issuer_enumerator->enumerate(issuer_enumerator, &issuer_ts)) + { + if (subject_ts->is_contained_in(subject_ts, issuer_ts)) + { + DBG2(DBG_CFG, " subject address block %R is contained in " + "issuer address block %R", subject_ts, issuer_ts); + contained = TRUE; + break; + } + } + issuer_enumerator->destroy(issuer_enumerator); + if (!contained) + { + DBG1(DBG_CFG, "subject address block %R is not contained in any " + "issuer address block", subject_ts); + break; + } + } + subject_enumerator->destroy(subject_enumerator); + return contained; +} + +/** * check a certificate for its lifetime */ static bool check_certificate(private_credential_manager_t *this, @@ -961,6 +1015,10 @@ static bool check_certificate(private_credential_manager_t *this, if (issuer->get_type(issuer) == CERT_X509 && subject->get_type(subject) == CERT_X509) { + if (!check_ip_addr_block_constraints((x509_t*)subject, (x509_t*)issuer)) + { + return FALSE; + } if (ocsp || crl) { DBG1(DBG_CFG, "checking certificate status of \"%Y\"", |