Update some demos

demos/skf/Makefile

@@ -0,0 +1,11 @@
+all:
+	#gcc skf.c libskf.so -o skf
+	gcc skf.c -DUSE_GMAPI -lcrypto -o skf-gmapi
+
+test:
+	#./skf
+	./skf-gmapi
+
+clean:
+	rm -fr skf
+	rm -fr skf-gmapi

demos/skf/skf.c

@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <libgen.h>
+/*
+ * When USE_GMAPI, the code need to load vendor's SKF dynamic library through
+ * the GmSSL SKF framework, and the error string can be printed through the ERR
+ * module.
+ */
+#ifdef USE_GMAPI
+# include <openssl/err.h>
+# include <openssl/gmskf.h>
+# include <openssl/is_gmssl.h>
+#else
+/*
+ * Else the code can be directly linked with vendor's static or dynamic SKF
+ * library, and the code also need the vendor's SKF header files.
+ */
+# include "skf.h"
+#endif
+
+int main(int argc, char **argv)
+{
+	int ret = -1;
+	char *prog = basename(argv[0]);
+	ULONG rv;
+	LPSTR nameList = NULL;
+	ULONG ulSize;
+	DEVHANDLE hDev;
+	DEVINFO devInfo;
+
+#ifdef USE_GMAPI
+	if (argc != 2) {
+		printf("usage: %s <libskf.so>\n", prog);
+		return -1;
+	}
+
+	if ((rv = SKF_LoadLibrary((LPSTR)argv[1], NULL)) != SAR_OK) {
+		ERR_print_errors_fp(stderr);
+		return -1;
+	}
+#endif
+
+	if ((rv = SKF_EnumDev(TRUE, NULL, &ulSize)) != SAR_OK) {
+		fprintf(stderr, "%s: SKF_EnumDev() return %u\n", prog, rv);
+		goto end;
+	}
+
+	if (!(nameList = malloc(ulSize))) {
+		goto end;
+	}
+
+	if ((rv = SKF_EnumDev(TRUE, nameList, &ulSize)) != SAR_OK) {
+		fprintf(stderr, "%s: SKF_EnumDev() return %u\n", prog, rv);
+		goto end;
+	}
+
+	if ((rv = SKF_ConnectDev(nameList, &hDev)) != SAR_OK) {
+		fprintf(stderr, "%s: SKF_EnumDev() return %u\n", prog, rv);
+		goto end;
+	}
+
+	if ((rv = SKF_GetDevInfo(hDev, &devInfo)) != SAR_OK) {
+		fprintf(stderr, "%s: SKF_EnumDev() return %u\n", prog, rv);
+		goto end;
+	}
+
+#ifdef USE_GMAPI
+	if ((rv = SKF_PrintDevInfo(&devInfo)) != SAR_OK) {
+		ERR_print_errors_fp(stderr);
+		goto end;
+	}
+#endif
+
+	if ((rv = SKF_DisConnectDev(hDev)) != SAR_OK) {
+		fprintf(stderr, "%s: SKF_EnumDev() return %u\n", prog, rv);
+		goto end;
+	}
+
+	ret = 0;
+
+end:
+#ifdef USE_GMAPI
+	SKF_UnloadLibrary();
+#endif
+	free(nameList);
+	return ret;
+}