--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libcommon/dumpdirfunc.c	Sun Mar 14 06:55:38 2021 +0000
@@ -0,0 +1,107 @@
+/*
+ * This module implements the common function for dumping EF_DIR.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include "simresp.h"
+
+static void
+dump_aid(tlv, outf)
+	u_char *tlv;
+	FILE *outf;
+{
+	unsigned reclen, n;
+
+	reclen = tlv[1];
+	fputs(" AID:", outf);
+	for (n = 0; n < reclen; n++)
+		fprintf(outf, " %02X", tlv[n+2]);
+	putc('\n', outf);
+}
+
+static void
+dump_label(tlv, outf)
+	u_char *tlv;
+	FILE *outf;
+{
+	int rc;
+	unsigned textlen;
+
+	fputs(" Label: ", outf);
+	rc = validate_alpha_field(tlv + 2, tlv[1], &textlen);
+	if (rc < 0) {
+		fputs("malformed\n", outf);
+		return;
+	}
+	print_alpha_field(tlv + 2, textlen, outf);
+	putc('\n', outf);
+}
+
+static void
+dump_unknown_tlv(tlv, outf)
+	u_char *tlv;
+	FILE *outf;
+{
+	unsigned reclen, n;
+
+	reclen = tlv[1] + 2;
+	fputs(" TLV:", outf);
+	for (n = 0; n < reclen; n++)
+		fprintf(outf, " %02X", tlv[n]);
+	putc('\n', outf);
+}
+
+void
+dump_efdir_record(outf)
+	FILE *outf;
+{
+	unsigned totlen, reclen;
+	u_char *dp, *endp;
+
+	if (sim_resp_data[0] != 0x61) {
+		fprintf(outf, " bad: first byte != 0x61\n");
+		return;
+	}
+	totlen = sim_resp_data[1];
+	if (totlen < 3 || totlen > 0x7F) {
+		fprintf(outf, " bad: global length byte 0x%02X is invalid\n",
+			totlen);
+		return;
+	}
+	if (totlen + 2 > sim_resp_data_len) {
+		fprintf(outf,
+			" bad: TLV global length exceeds EF record length\n");
+		return;
+	}
+	dp = sim_resp_data + 2;
+	endp = sim_resp_data + 2 + totlen;
+	while (dp < endp) {
+		if (endp - dp < 2) {
+trunc_error:		fprintf(outf, " bad: truncated TLV record\n");
+			return;
+		}
+		if ((dp[0] & 0x1F) == 0x1F) {
+			fprintf(outf, " bad: extended tag not supported\n");
+			return;
+		}
+		if (dp[1] & 0x80) {
+			fprintf(outf, " bad: extended length not supported\n");
+			return;
+		}
+		reclen = dp[1] + 2;
+		if (endp - dp < reclen)
+			goto trunc_error;
+		switch (dp[0]) {
+		case 0x4F:
+			dump_aid(dp, outf);
+			break;
+		case 0x50:
+			dump_label(dp, outf);
+			break;
+		default:
+			dump_unknown_tlv(dp, outf);
+		}
+		dp += reclen;
+	}
+}