From a40cde2d049a89e77f7e756d1d7e9594cd70e1d1 Mon Sep 17 00:00:00 2001
From: Peter Marschall <peter@adpm.de>
Date: Sun, 5 Jan 2020 10:54:47 +0100
Subject: [PATCH] util: refactor listing card drivers

Make util_list_card_drivers() a function in util.c to allow
consistent listing of available card drivers from tools.
---
 src/tools/util.c | 20 ++++++++++++++++++++
 src/tools/util.h |  1 +
 2 files changed, 21 insertions(+)

diff --git a/src/tools/util.c b/src/tools/util.c
index 5faab385..ade86fb1 100644
--- a/src/tools/util.c
+++ b/src/tools/util.c
@@ -305,6 +305,26 @@ util_print_usage_and_die(const char *app_name, const struct option options[],
 	exit(2);
 }
 
+int util_list_card_drivers(const sc_context_t *ctx)
+{
+	int i;
+
+	if (ctx == NULL) {
+		fprintf(stderr, "Unable to get card drivers!\n");
+		return 1;
+	}
+	if (ctx->card_drivers[0] == NULL) {
+		fprintf(stderr, "No card drivers installed!\n");
+		return 1;
+	}
+	printf("Available card drivers:\n");
+	for (i = 0; ctx->card_drivers[i] != NULL; i++) {
+		printf("  %-16s %s\n", ctx->card_drivers[i]->short_name,
+		      ctx->card_drivers[i]->name);
+	}
+	return 0;
+}
+
 const char * util_acl_to_str(const sc_acl_entry_t *e)
 {
 	static char line[80], buf[20];
diff --git a/src/tools/util.h b/src/tools/util.h
index 21c8293e..929928d8 100644
--- a/src/tools/util.h
+++ b/src/tools/util.h
@@ -41,6 +41,7 @@ void util_hex_dump(FILE *f, const u8 *in, int len, const char *sep);
 void util_hex_dump_asc(FILE *f, const u8 *in, size_t count, int addr);
 NORETURN void util_print_usage_and_die(const char *app_name, const struct option options[],
 	const char *option_help[], const char *args);
+int util_list_card_drivers(const sc_context_t *ctx);
 const char * util_acl_to_str(const struct sc_acl_entry *e);
 void util_warn(const char *fmt, ...);
 void util_error(const char *fmt, ...);