Add -q (quiet) option to dnssec-signzone and dnssec-verify tool

With the move of the normal output to stdout, we need a way how to silence the
extra output, so the signed file name can be captured in a simple way.  This
commit adds `-q` command line option that will silence all the normal output
that get's printed from both tools.

bin/dnssec/dnssec-keygen.c

@@ -218,7 +218,6 @@ main(int argc, char **argv) {
 	bool	unsetrev = false, unsetinact = false;
 	bool	unsetdel = false;
 	bool	genonly = false;
-	bool	quiet = false;
 	bool	show_progress = false;
 	unsigned char	c;
 	isc_stdtime_t	syncadd = 0, syncdel = 0;

bin/dnssec/dnssec-signzone.c

@@ -2645,12 +2645,14 @@ loadexplicitkeys(char *keyfiles[], int n, bool setksk) {
 
 static void
 report(const char *format, ...) {
-	FILE *out = output_stdout ? stderr : stdout;
-	va_list args;
-	va_start(args, format);
-	vfprintf(out, format, args);
-	va_end(args);
-	putc('\n', out);
+	if (!quiet) {
+		FILE *out = output_stdout ? stderr : stdout;
+		va_list args;
+		va_start(args, format);
+		vfprintf(out, format, args);
+		va_end(args);
+		putc('\n', out);
+	}
 }
 
 static void
@@ -3086,6 +3088,7 @@ usage(void) {
 	fprintf(stderr, "\t-j jitter:\n");
 	fprintf(stderr, "\t\trandomize signature end time up to jitter seconds\n");
 	fprintf(stderr, "\t-v debuglevel (0)\n");
+	fprintf(stderr, "\t-q quiet\n");
 	fprintf(stderr, "\t-V:\tprint version information\n");
 	fprintf(stderr, "\t-o origin:\n");
 	fprintf(stderr, "\t\tzone origin (name of zonefile)\n");
@@ -3479,6 +3482,10 @@ main(int argc, char *argv[]) {
 				fatal("verbose level must be numeric");
 			break;
 
+		case 'q':
+			quiet = true;
+			break;
+
 		case 'X':
 			dnskey_endstr = isc_commandline_argument;
 			break;

bin/dnssec/dnssec-verify.c

@@ -80,11 +80,13 @@ static bool keyset_kskonly = false;
 
 static void
 report(const char *format, ...) {
-	va_list args;
-	va_start(args, format);
-	vfprintf(stdout, format, args);
-	va_end(args);
-	putc('\n', stdout);
+	if (!quiet) {
+		va_list args;
+		va_start(args, format);
+		vfprintf(stdout, format, args);
+		va_end(args);
+		putc('\n', stdout);
+	}
 }
 
 /*%
@@ -149,6 +151,7 @@ usage(void) {
 
 	fprintf(stderr, "Options: (default value in parenthesis) \n");
 	fprintf(stderr, "\t-v debuglevel (0)\n");
+	fprintf(stderr, "\t-q quiet\n");
 	fprintf(stderr, "\t-V:\tprint version information\n");
 	fprintf(stderr, "\t-o origin:\n");
 	fprintf(stderr, "\t\tzone origin (name of zonefile)\n");
@@ -246,6 +249,10 @@ main(int argc, char *argv[]) {
 				fatal("verbose level must be numeric");
 			break;
 
+		case 'q':
+			quiet = true;
+			break;
+
 		case 'x':
 			keyset_kskonly = true;
 			break;

bin/dnssec/dnssectool.c

@@ -57,7 +57,8 @@
 
 #include "dnssectool.h"
 
-int verbose;
+int verbose = 0;
+bool quiet = false;
 uint8_t dtype[8];
 
 static fatalcallback_t *fatalcallback = NULL;

bin/dnssec/dnssectool.h

@@ -25,8 +25,9 @@
 #define PATH_MAX 1024   /* WIN32, and others don't define this. */
 #endif
 
-/*! verbosity: set by -v option in each program, defined in dnssectool.c */
+/*! verbosity: set by -v and -q option in each program, defined in dnssectool.c */
 extern int verbose;
+extern bool quiet;
 
 /*! program name, statically initialized in each program */
 extern const char *program;