--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libcommon/pbdumpfunc.c	Fri Feb 12 00:28:06 2021 +0000
@@ -0,0 +1,57 @@
+/*
+ * This module implements the meaty function for pb-dump commands.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include "simresp.h"
+
+static
+check_blank_area(dp, endp)
+	u_char *dp, *endp;
+{
+	while (dp < endp)
+		if (*dp++ != 0xFF)
+			return(-1);
+	return(0);
+}
+
+void
+dump_phonebook_record(recno, outf)
+	unsigned recno;
+	FILE *outf;
+{
+	int rc;
+	unsigned textlen;
+	u_char *fixp;
+	char digits[21];
+
+	fprintf(outf, "#%u: ", recno);
+	if (sim_resp_data_len > 14) {
+		rc = validate_alpha_field(sim_resp_data,
+					  sim_resp_data_len - 14,
+					  &textlen);
+		if (rc < 0) {
+malformed:		fprintf(outf, "malformed record\n");
+			return;
+		}
+	} else
+		textlen = 0;
+	fixp = sim_resp_data + sim_resp_data_len - 14;
+	if (fixp[0] < 2 || fixp[0] > 11)
+		goto malformed;
+	rc = decode_phone_number(fixp + 2, fixp[0] - 1, digits);
+	if (rc < 0)
+		goto malformed;
+	rc = check_blank_area(fixp + 1 + fixp[0], fixp + 12);
+	if (rc < 0)
+		goto malformed;
+	/* all checks passed */
+	fprintf(outf, "%s,0x%02X ", digits, fixp[1]);
+	if (fixp[12] != 0xFF)
+		fprintf(outf, "CCP=%u ", fixp[12]);
+	if (fixp[13] != 0xFF)
+		fprintf(outf, "EXT=%u ", fixp[13]);
+	print_alpha_field(sim_resp_data, textlen, outf);
+	putc('\n', outf);
+}