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(Unicode C) Load .crl, Convert to XML, Get Revoked Serial Numbers and DatesLoad a binary .crl file (Certificate Revocation List), converts to XML, and then gets the revoked certificate serial numbers and revocation dates. Note: This example requires Chilkat v9.5.0.77 or greater.
#include <C_CkBinDataW.h> #include <C_CkAsnW.h> #include <C_CkXmlW.h> #include <C_CkDateTimeW.h> void ChilkatSample(void) { HCkBinDataW bdCrl; BOOL success; HCkAsnW asn; HCkXmlW xml; int i; int count_i; const wchar_t *tagPath; int j; int count_j; int k; int count_k; const wchar_t *revokedCertSerialHex; const wchar_t *dateRevoked; HCkDateTimeW dt; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // Load a binary .crl file. bdCrl = CkBinDataW_Create(); success = CkBinDataW_LoadFile(bdCrl,L"qa_data/crl/ca1.crl"); if (success != TRUE) { wprintf(L"Failed to load CRL file.\n"); CkBinDataW_Dispose(bdCrl); return; } asn = CkAsnW_Create(); success = CkAsnW_LoadBd(asn,bdCrl); if (success != TRUE) { wprintf(L"%s\n",CkAsnW_lastErrorText(asn)); CkBinDataW_Dispose(bdCrl); CkAsnW_Dispose(asn); return; } // Convert ASN.1 to XML and load into xml and re-emit for pretty printing.. xml = CkXmlW_Create(); CkXmlW_LoadXml(xml,CkAsnW_asnToXml(asn)); success = CkXmlW_SaveXml(xml,L"qa_output/crl.xml"); // Use this online tool to generate parsing code from CRL XML: // Generate Parsing Code from XML // Here's code to parse the XML. This code was generated by the above tool, // and then we modified it by removing unneeded code and changing some names dt = CkDateTimeW_Create(); i = 0; count_i = CkXmlW_NumChildrenHavingTag(xml,L"sequence"); while (i < count_i) { CkXmlW_putI(xml,i); j = 0; count_j = CkXmlW_NumChildrenHavingTag(xml,L"sequence[i]|sequence"); while (j < count_j) { CkXmlW_putJ(xml,j); k = 0; count_k = CkXmlW_NumChildrenHavingTag(xml,L"sequence[i]|sequence[j]|sequence"); while (k < count_k) { CkXmlW_putK(xml,k); // Get the revoked certificate's serial number in uppercase hex. revokedCertSerialHex = CkXmlW_getChildContent(xml,L"sequence[i]|sequence[j]|sequence[k]|int"); wprintf(L"serial number: %s\n",revokedCertSerialHex); // Get the date/time revoked. It will be a string formatted as "YYMMDDhhmmssZ", such as "181023093028Z" dateRevoked = CkXmlW_getChildContent(xml,L"sequence[i]|sequence[j]|sequence[k]|utctime"); // Starting in Chilkat v9.5.0.77, date/time strings formatted as YYMMDDhhmmssZ can be parsed as follows: CkDateTimeW_SetFromTimestamp(dt,dateRevoked); wprintf(L"date revoked: %s\n",CkDateTimeW_getAsRfc822(dt,FALSE)); k = k + 1; } j = j + 1; } i = i + 1; } CkBinDataW_Dispose(bdCrl); CkAsnW_Dispose(asn); CkXmlW_Dispose(xml); CkDateTimeW_Dispose(dt); } |
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