--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/simtool/chv.c	Tue Jan 26 00:51:59 2021 +0000
@@ -0,0 +1,199 @@
+/*
+ * This module implements the standard set of CHV commands
+ * for GSM 11.11 SIMs.
+ */
+
+#include <sys/types.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pcsclite.h>
+#include <winscard.h>
+#include "globals.h"
+
+static
+encode_pin_entry(arg, dest)
+	char *arg;
+	u_char *dest;
+{
+	unsigned n;
+
+	n = 0;
+	while (*arg) {
+		if (!isdigit(*arg)) {
+			fprintf(stderr,
+			"error: PIN argument contains a non-digit character\n");
+			return(-1);
+		}
+		if (n >= 8) {
+			fprintf(stderr, "error: PIN argument is too long\n");
+			return(-1);
+		}
+		*dest++ = *arg++;
+		n++;
+	}
+	for (; n < 8; n++)
+		*dest++ = 0xFF;
+	return(0);
+}
+
+cmd_verify_chv(argc, argv)
+	char **argv;
+{
+	u_char cmd[13];
+	int rc;
+
+	/* VERIFY CHV command APDU */
+	cmd[0] = 0xA0;
+	cmd[1] = 0x20;
+	cmd[2] = 0x00;
+	switch (argv[0][10]) {
+	case '1':
+		cmd[3] = 0x01;
+		break;
+	case '2':
+		cmd[3] = 0x02;
+		break;
+	default:
+		fprintf(stderr, "BUG in verify-chvN command\n");
+		return(-1);
+	}
+	cmd[4] = 8;
+	rc = encode_pin_entry(argv[1], cmd + 5);
+	if (rc < 0)
+		return(rc);
+	rc = apdu_exchange(cmd, 13);
+	if (rc < 0)
+		return(rc);
+	if (sim_resp_sw != 0x9000) {
+		fprintf(stderr, "bad SW response: %04X\n", sim_resp_sw);
+		return(-1);
+	}
+	return(0);
+}
+
+cmd_change_chv(argc, argv)
+	char **argv;
+{
+	u_char cmd[21];
+	int rc;
+
+	/* CHANGE CHV command APDU */
+	cmd[0] = 0xA0;
+	cmd[1] = 0x24;
+	cmd[2] = 0x00;
+	switch (argv[0][10]) {
+	case '1':
+		cmd[3] = 0x01;
+		break;
+	case '2':
+		cmd[3] = 0x02;
+		break;
+	default:
+		fprintf(stderr, "BUG in change-chvN command\n");
+		return(-1);
+	}
+	cmd[4] = 16;
+	rc = encode_pin_entry(argv[1], cmd + 5);
+	if (rc < 0)
+		return(rc);
+	rc = encode_pin_entry(argv[2], cmd + 13);
+	if (rc < 0)
+		return(rc);
+	rc = apdu_exchange(cmd, 21);
+	if (rc < 0)
+		return(rc);
+	if (sim_resp_sw != 0x9000) {
+		fprintf(stderr, "bad SW response: %04X\n", sim_resp_sw);
+		return(-1);
+	}
+	return(0);
+}
+
+cmd_disable_chv(argc, argv)
+	char **argv;
+{
+	u_char cmd[13];
+	int rc;
+
+	/* DISABLE CHV command APDU */
+	cmd[0] = 0xA0;
+	cmd[1] = 0x26;
+	cmd[2] = 0x00;
+	cmd[3] = 0x01;
+	cmd[4] = 8;
+	rc = encode_pin_entry(argv[1], cmd + 5);
+	if (rc < 0)
+		return(rc);
+	rc = apdu_exchange(cmd, 13);
+	if (rc < 0)
+		return(rc);
+	if (sim_resp_sw != 0x9000) {
+		fprintf(stderr, "bad SW response: %04X\n", sim_resp_sw);
+		return(-1);
+	}
+	return(0);
+}
+
+cmd_enable_chv(argc, argv)
+	char **argv;
+{
+	u_char cmd[13];
+	int rc;
+
+	/* ENABLE CHV command APDU */
+	cmd[0] = 0xA0;
+	cmd[1] = 0x28;
+	cmd[2] = 0x00;
+	cmd[3] = 0x01;
+	cmd[4] = 8;
+	rc = encode_pin_entry(argv[1], cmd + 5);
+	if (rc < 0)
+		return(rc);
+	rc = apdu_exchange(cmd, 13);
+	if (rc < 0)
+		return(rc);
+	if (sim_resp_sw != 0x9000) {
+		fprintf(stderr, "bad SW response: %04X\n", sim_resp_sw);
+		return(-1);
+	}
+	return(0);
+}
+
+cmd_unblock_chv(argc, argv)
+	char **argv;
+{
+	u_char cmd[21];
+	int rc;
+
+	/* UNBLOCK CHV command APDU */
+	cmd[0] = 0xA0;
+	cmd[1] = 0x2C;
+	cmd[2] = 0x00;
+	switch (argv[0][11]) {
+	case '1':
+		cmd[3] = 0x00;
+		break;
+	case '2':
+		cmd[3] = 0x02;
+		break;
+	default:
+		fprintf(stderr, "BUG in unblock-chvN command\n");
+		return(-1);
+	}
+	cmd[4] = 16;
+	rc = encode_pin_entry(argv[1], cmd + 5);
+	if (rc < 0)
+		return(rc);
+	rc = encode_pin_entry(argv[2], cmd + 13);
+	if (rc < 0)
+		return(rc);
+	rc = apdu_exchange(cmd, 21);
+	if (rc < 0)
+		return(rc);
+	if (sim_resp_sw != 0x9000) {
+		fprintf(stderr, "bad SW response: %04X\n", sim_resp_sw);
+		return(-1);
+	}
+	return(0);
+}