--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/simtool/plmnsel.c	Sat Feb 13 06:26:52 2021 +0000
@@ -0,0 +1,90 @@
+/*
+ * This module implements commands for working with EF_PLMNsel.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include "simresp.h"
+#include "curfile.h"
+#include "file_id.h"
+
+static
+select_ef_plmnsel()
+{
+	int rc;
+
+	rc = select_op(DF_GSM);
+	if (rc < 0)
+		return(rc);
+	rc = select_op(EF_PLMNsel);
+	if (rc < 0)
+		return(rc);
+	rc = parse_ef_select_response();
+	if (rc < 0)
+		return(rc);
+	if (curfile_structure != 0x00) {
+		fprintf(stderr, "error: EF_PLMNsel is not transparent\n");
+		return(-1);
+	}
+	if (curfile_total_size < 24) {
+		fprintf(stderr,
+		"error: EF_PLMNsel is shorter than spec minimum of 24 bytes\n");
+		return(-1);
+	}
+	if (curfile_total_size > 255) {
+		fprintf(stderr,
+		"error: EF_PLMNsel is longer than our 255 byte limit\n");
+		return(-1);
+	}
+	if (curfile_total_size % 3) {
+		fprintf(stderr,
+		"error: EF_PLMNsel length is not a multiple of 3 bytes\n");
+		return(-1);
+	}
+	return(0);
+}
+
+cmd_plmnsel_dump()
+{
+	int rc, gap_flag;
+	u_char *dp, *endp;
+	char ascbuf[8];
+	unsigned idx, linelen;
+
+	rc = select_ef_plmnsel();
+	if (rc < 0)
+		return(rc);
+	rc = readbin_op(0, curfile_total_size);
+	if (rc < 0)
+		return(rc);
+	dp = sim_resp_data;
+	endp = sim_resp_data + sim_resp_data_len;
+	gap_flag = 0;
+	linelen = 0;
+	for (idx = 0; dp < endp; idx++, dp += 3) {
+		if (dp[0] == 0xFF && dp[1] == 0xFF && dp[2] == 0xFF) {
+			gap_flag = 1;
+			continue;
+		}
+		if (gap_flag) {
+			if (linelen) {
+				putchar('\n');
+				linelen = 0;
+			}
+			printf("GAP, continuing at index %u:\n", idx);
+			gap_flag = 0;
+		}
+		if (linelen >= 10) {
+			putchar('\n');
+			linelen = 0;
+		}
+		decode_plmn_3bytes(dp, ascbuf, 1);
+		if (linelen)
+			putchar(' ');
+		fputs(ascbuf, stdout);
+		linelen++;
+	}
+	if (linelen)
+		putchar('\n');
+	return(0);
+}