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(Unicode C) Examine SSL/TLS Server CertificateSee more Socket/SSL/TLS ExamplesDemonstrates how an application can examine and check a server's SSL/TLS certificate.
#include <C_CkSocketW.h> #include <C_CkCertW.h> void ChilkatSample(void) { HCkSocketW socket; BOOL useTls; int maxWaitMs; BOOL success; HCkCertW cert; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. socket = CkSocketW_Create(); // Connect to a server. useTls = TRUE; maxWaitMs = 2000; success = CkSocketW_Connect(socket,L"www.intel.com",443,useTls,maxWaitMs); if (success == FALSE) { wprintf(L"%s\n",CkSocketW_lastErrorText(socket)); CkSocketW_Dispose(socket); return; } // If we get here, the TLS connection ws made.. // In any SSL/TLS handshake, the server sends its certificate in a TLS handshake message. // Chilkat will keep it cached within the object that made the connection. // Get the server's cert and examine a few things. cert = CkSocketW_GetSslServerCert(socket); if (CkSocketW_getLastMethodSuccess(socket) == FALSE) { // This is unexpected.. wprintf(L"%s\n",CkSocketW_lastErrorText(socket)); CkSocketW_Dispose(socket); return; } wprintf(L"Distinguished Name: %s\n",CkCertW_subjectDN(cert)); wprintf(L"Common Name: %s\n",CkCertW_subjectCN(cert)); wprintf(L"Issuer Distinguished Name: %s\n",CkCertW_issuerDN(cert)); wprintf(L"Issuer Common Name: %s\n",CkCertW_issuerCN(cert)); wprintf(L"Expired: %d\n",CkCertW_getExpired(cert)); wprintf(L"Revoked: %d\n",CkCertW_getRevoked(cert)); wprintf(L"Signature Verified: %d\n",CkCertW_getSignatureVerified(cert)); wprintf(L"Trusted Root: %d\n",CkCertW_getTrustedRoot(cert)); // Sample output: // Distinguished Name: C=US, ST=California, O=Intel Corporation, CN=*.intel.com // Common Name: *.intel.com // Issuer Distinguished Name: C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Organization Validation Secure Server CA // Issuer Common Name: Sectigo RSA Organization Validation Secure Server CA // Expired: False // Revoked: False // Signature Verified: True // Trusted Root: True CkCertW_Dispose(cert); CkSocketW_Dispose(socket); } |
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