/** @file\r
X.509 Certificate Handler Wrapper Implementation over OpenSSL.\r
\r
-Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
return Status;\r
}\r
\r
+/**\r
+ Retrieve the common name (CN) string from one X.509 certificate.\r
+\r
+ @param[in] Cert Pointer to the DER-encoded X509 certificate.\r
+ @param[in] CertSize Size of the X509 certificate in bytes.\r
+ @param[out] CommonName Buffer to contain the retrieved certificate common\r
+ name string (UTF8). At most CommonNameSize bytes will be\r
+ written and the string will be null terminated. May be\r
+ NULL in order to determine the size buffer needed.\r
+ @param[in,out] CommonNameSize The size in bytes of the CommonName buffer on input,\r
+ and the size of buffer returned CommonName on output.\r
+ If CommonName is NULL then the amount of space needed\r
+ in buffer (including the final null) is returned.\r
+\r
+ @retval RETURN_SUCCESS The certificate CommonName retrieved successfully.\r
+ @retval RETURN_INVALID_PARAMETER If Cert is NULL.\r
+ If CommonNameSize is NULL.\r
+ If CommonName is not NULL and *CommonNameSize is 0.\r
+ If Certificate is invalid.\r
+ @retval RETURN_NOT_FOUND If no CommonName entry exists.\r
+ @retval RETURN_BUFFER_TOO_SMALL If the CommonName is NULL. The required buffer size\r
+ (including the final null) is returned in the\r
+ CommonNameSize parameter.\r
+ @retval RETURN_UNSUPPORTED The operation is not supported.\r
+\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+X509GetCommonName (\r
+ IN CONST UINT8 *Cert,\r
+ IN UINTN CertSize,\r
+ OUT CHAR8 *CommonName, OPTIONAL\r
+ IN OUT UINTN *CommonNameSize\r
+ )\r
+{\r
+ RETURN_STATUS ReturnStatus;\r
+ BOOLEAN Status;\r
+ X509 *X509Cert;\r
+ X509_NAME *X509Name;\r
+ INT32 Index;\r
+ INTN Length;\r
+ X509_NAME_ENTRY *Entry;\r
+ ASN1_STRING *EntryData;\r
+ UINT8 *UTF8Name;\r
+\r
+ ReturnStatus = RETURN_INVALID_PARAMETER;\r
+ UTF8Name = NULL;\r
+\r
+ //\r
+ // Check input parameters.\r
+ //\r
+ if ((Cert == NULL) || (CertSize > INT_MAX) || (CommonNameSize == NULL)) {\r
+ return ReturnStatus;\r
+ }\r
+ if ((CommonName != NULL) && (*CommonNameSize == 0)) {\r
+ return ReturnStatus;\r
+ }\r
+\r
+ X509Cert = NULL;\r
+ //\r
+ // Read DER-encoded X509 Certificate and Construct X509 object.\r
+ //\r
+ Status = X509ConstructCertificate (Cert, CertSize, (UINT8 **) &X509Cert);\r
+ if ((X509Cert == NULL) || (!Status)) {\r
+ //\r
+ // Invalid X.509 Certificate\r
+ //\r
+ goto _Exit;\r
+ }\r
+\r
+ Status = FALSE;\r
+\r
+ //\r
+ // Retrieve subject name from certificate object.\r
+ //\r
+ X509Name = X509_get_subject_name (X509Cert);\r
+ if (X509Name == NULL) {\r
+ //\r
+ // Fail to retrieve subject name content\r
+ //\r
+ goto _Exit;\r
+ }\r
+\r
+ //\r
+ // Retrieve the CommonName information from X.509 Subject\r
+ //\r
+ Index = X509_NAME_get_index_by_NID (X509Name, NID_commonName, -1);\r
+ if (Index < 0) {\r
+ //\r
+ // No CommonName entry exists in X509_NAME object\r
+ //\r
+ *CommonNameSize = 0;\r
+ ReturnStatus = RETURN_NOT_FOUND;\r
+ goto _Exit;\r
+ }\r
+\r
+ Entry = X509_NAME_get_entry (X509Name, Index);\r
+ if (Entry == NULL) {\r
+ //\r
+ // Fail to retrieve name entry data\r
+ //\r
+ *CommonNameSize = 0;\r
+ ReturnStatus = RETURN_NOT_FOUND;\r
+ goto _Exit;\r
+ }\r
+\r
+ EntryData = X509_NAME_ENTRY_get_data (Entry);\r
+\r
+ Length = ASN1_STRING_to_UTF8 (&UTF8Name, EntryData);\r
+ if (Length < 0) {\r
+ //\r
+ // Fail to convert the commonName string\r
+ //\r
+ *CommonNameSize = 0;\r
+ ReturnStatus = RETURN_INVALID_PARAMETER;\r
+ goto _Exit;\r
+ }\r
+\r
+ if (CommonName == NULL) {\r
+ *CommonNameSize = Length + 1;\r
+ ReturnStatus = RETURN_BUFFER_TOO_SMALL;\r
+ } else {\r
+ *CommonNameSize = MIN ((UINTN)Length, *CommonNameSize - 1) + 1;\r
+ CopyMem (CommonName, UTF8Name, *CommonNameSize - 1);\r
+ CommonName[*CommonNameSize - 1] = '\0';\r
+ ReturnStatus = RETURN_SUCCESS;\r
+ }\r
+\r
+_Exit:\r
+ //\r
+ // Release Resources.\r
+ //\r
+ if (X509Cert != NULL) {\r
+ X509_free (X509Cert);\r
+ }\r
+ if (UTF8Name != NULL) {\r
+ OPENSSL_free (UTF8Name);\r
+ }\r
+\r
+ return ReturnStatus;\r
+}\r
+\r
/**\r
Retrieve the RSA Public Key from one DER-encoded X509 certificate.\r
\r
)\r
{\r
CONST UINT8 *Temp;\r
- INTN Asn1Tag;\r
- INTN ObjClass;\r
+ UINT32 Asn1Tag;\r
+ UINT32 ObjClass;\r
UINTN Length;\r
\r
//\r
// So we can just ASN1-parse the x.509 DER-encoded data. If we strip\r
// the first SEQUENCE, the second SEQUENCE is the TBSCertificate.\r
//\r
- Temp = Cert;\r
+ Temp = Cert;\r
+ Length = 0;\r
ASN1_get_object (&Temp, (long *)&Length, (int *)&Asn1Tag, (int *)&ObjClass, (long)CertSize);\r
\r
if (Asn1Tag != V_ASN1_SEQUENCE) {\r
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