+
+/*
+ * getpathname()
+ * Reads a pathname from stdin, handling NUL- or newline-termination.
+ * Return:
+ * NULL at end of file, otherwise the NUL-terminated buffer.
+ */
+
+static char *
+getpathname(char *buf, int buflen)
+{
+ char *bp, *ep;
+ int ch, term;
+
+ if (zeroflag) {
+ /*
+ * Read a NUL-terminated pathname, being especially
+ * paranoid about proper termination and pathname length.
+ */
+ for (bp = buf, ep = buf + buflen; bp < ep; bp++) {
+ if ((ch = getchar()) == EOF) {
+ if (bp != buf)
+ paxwarn(1, "Ignoring unterminated "
+ "pathname at EOF");
+ return(NULL);
+ }
+ if ((*bp = ch) == '\0')
+ return(buf);
+ }
+ /* Too long - skip this path */
+ *--bp = '\0';
+ term = '\0';
+ } else {
+ if (fgets(buf, buflen, stdin) == NULL)
+ return(NULL);
+ if ((bp = strchr(buf, '\n')) != NULL || feof(stdin)) {
+ if (bp != NULL)
+ *bp = '\0';
+ return(buf);
+ }
+ /* Too long - skip this path */
+ term = '\n';
+ }
+ while ((ch = getchar()) != term && ch != EOF)
+ ;
+ paxwarn(1, "Ignoring too-long pathname: %s", buf);
+ return(NULL);
+}