[CERTUTIL] Add -asn verb

base/applications/cmdutils/certutil/certutil.cpp

@@ -0,0 +1,107 @@
+/*
+ * PROJECT:     ReactOS certutil
+ * LICENSE:     MIT (https://spdx.org/licenses/MIT)
+ * PURPOSE:     CertUtil commandline handling
+ * COPYRIGHT:   Copyright 2020 Mark Jansen (mark.jansen@reactos.org)
+ *
+ * Note: Only -hashfile and -asn are implemented for now, the rest is not present!
+ */
+
+#include "precomp.h"
+#include <wincrypt.h>
+#include <stdlib.h>
+
+typedef struct
+{
+    LPCWSTR Name;
+    BOOL (*pfn)(LPCWSTR Filename);
+} Verb;
+
+
+Verb verbs[] = {
+    { L"hashfile", hash_file },
+    { L"asn", asn_dump },
+};
+
+static void print_usage()
+{
+    ConPuts(StdOut, L"Verbs:\n");
+    ConPuts(StdOut, L"  -hashfile           -- Display cryptographic hash over a file\n");
+    ConPuts(StdOut, L"  -asn                -- Display ASN.1 encoding of a file\n");
+    ConPuts(StdOut, L"\n");
+    ConPuts(StdOut, L"CertUtil -?           -- Display a list of all verbs\n");
+    ConPuts(StdOut, L"CertUtil -hashfile -? -- Display help text for the 'hashfile' verb\n");
+}
+
+
+Verb* MatchVerb(LPCWSTR arg)
+{
+    if (arg[0] != '-' && arg[0] != '/')
+        return NULL;
+
+    for (size_t n = 0; n < RTL_NUMBER_OF(verbs); ++n)
+    {
+        if (!_wcsicmp(verbs[n].Name, arg + 1))
+        {
+            return verbs + n;
+        }
+    }
+
+    return NULL;
+}
+
+int wmain(int argc, WCHAR *argv[])
+{
+    int n;
+
+    /* Initialize the Console Standard Streams */
+    ConInitStdStreams();
+
+    if (argc == 1) /* i.e. no commandline arguments given */
+    {
+        print_usage();
+        return EXIT_SUCCESS;
+    }
+
+    for (n = 1; n < argc; ++n)
+    {
+        if (!_wcsicmp(argv[n], L"-?"))
+        {
+            print_usage();
+            return EXIT_SUCCESS;
+        }
+
+        Verb* verb = MatchVerb(argv[n]);
+
+        if (verb)
+        {
+            if (argc != 3)
+            {
+                ConPrintf(StdOut, L"CertUtil: -%s expected 1 argument, got %d\n", verb->Name, argc - 2);
+                return EXIT_FAILURE;
+            }
+
+            if (!_wcsicmp(argv[n+1], L"-?"))
+            {
+                print_usage();
+                return EXIT_SUCCESS;
+            }
+
+            if (!verb->pfn(argv[n+1]))
+            {
+                /* The verb prints the failure */
+                return EXIT_FAILURE;
+            }
+
+            ConPrintf(StdOut, L"CertUtil: -%s command completed successfully\n", verb->Name);
+            return EXIT_SUCCESS;
+        }
+        else
+        {
+            ConPrintf(StdOut, L"CertUtil: Unknown verb: %s\n", argv[n]);
+            return EXIT_FAILURE;
+        }
+    }
+
+    return EXIT_SUCCESS;
+}