stroke: add exportconn{cert,chain} commands in addition to exportx509

The new commands either export a single end entity certificate or the
full trust chain for a specific connection name.

src/stroke/stroke.c

@@ -321,6 +321,8 @@ static int purge(stroke_keyword_t kw)
 
 static int export_flags[] = {
 	EXPORT_X509,
+	EXPORT_CONN_CERT,
+	EXPORT_CONN_CHAIN,
 };
 
 static int export(stroke_keyword_t kw, char *selector)
@@ -449,6 +451,8 @@ static void exit_usage(char *error)
 	printf("    stroke purgeike\n");
 	printf("  Export credentials to the console:\n");
 	printf("    stroke exportx509 DN\n");
+	printf("    stroke exportconncert connname\n");
+	printf("    stroke exportconnchain connname\n");
 	printf("  Show current memory usage:\n");
 	printf("    stroke memusage\n");
 	printf("  Show leases of a pool:\n");
@@ -587,9 +591,11 @@ int main(int argc, char *argv[])
 			res = purge(token->kw);
 			break;
 		case STROKE_EXPORT_X509:
+		case STROKE_EXPORT_CONN_CERT:
+		case STROKE_EXPORT_CONN_CHAIN:
 			if (argc != 3)
 			{
-				exit_usage("\"exportx509\" needs a distinguished name");
+				exit_usage("\"export\" needs a name");
 			}
 			res = export(token->kw, argv[2]);
 			break;

src/stroke/stroke_keywords.h

@@ -55,6 +55,8 @@ typedef enum {
 	STROKE_PURGE_CERTS,
 	STROKE_PURGE_IKE,
 	STROKE_EXPORT_X509,
+	STROKE_EXPORT_CONN_CERT,
+	STROKE_EXPORT_CONN_CHAIN,
 	STROKE_LEASES,
 	STROKE_MEMUSAGE,
 	STROKE_USER_CREDS,

src/stroke/stroke_keywords.txt

@@ -62,6 +62,8 @@ purgecrls,       STROKE_PURGE_CRLS
 purgecerts,      STROKE_PURGE_CERTS
 purgeike,        STROKE_PURGE_IKE
 exportx509,      STROKE_EXPORT_X509
+exportconncert,  STROKE_EXPORT_CONN_CERT
+exportconnchain, STROKE_EXPORT_CONN_CHAIN
 leases,          STROKE_LEASES
 memusage,        STROKE_MEMUSAGE
 user-creds,      STROKE_USER_CREDS

src/stroke/stroke_msg.h

@@ -123,6 +123,10 @@ typedef enum export_flag_t export_flag_t;
 enum export_flag_t {
 	/** export an X509 certificate */
 	EXPORT_X509 =		0x0001,
+	/** export an X509 end entity certificate for a connection */
+	EXPORT_CONN_CERT =	0x0002,
+	/** export the complete trust chain of a connection */
+	EXPORT_CONN_CHAIN =	0x0004,
 };
 
 /**