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ossl_cmp_try_certreq

API Overview​

OSSL_CMP_try_certreq is an API in openssl. This rule belongs to the return value check type. This rule is generated using AURC.

Rule Description​

tip

OSSL_CMP_try_certreq() returns 1 if the requested certificate is available via L<OSSL_CMP_CTX_get0_newCert(3)> or on successfully aborting a pending certificate request, 0 on error, and -1 in case a 'waiting' status has been received and checkAfter value is available. In the latter case L<OSSL_CMP_CTX_get0_newCert(3)> yields NULL and the output parameter I<checkAfter> has been used to assign the received value unless I<checkAfter> is NULL.

info
  • Tags: return value check
  • Parameter Index: N/A
  • CWE Type: CWE-253

Rule Code​

import cpp

class OpenSSLFunctionCall extends FunctionCall {
  OpenSSLFunctionCall() {
    this.getTarget().hasName("OSSL_CMP_try_certreq")
  }
}

from OpenSSLFunctionCall call, UnaryOperation uop
where
  uop.getOperator() = "!" and
  uop.getOperand() = call.getAnAccess()
select uop, "This negation checks the return value of OSSL_CMP_try_certreq."