+#define LINESIZE 255
+/* Note trailing spaces for begin and end. */
+static const char beginstr[] = "-----BEGIN ";
+static const char endstr[] = "-----END ";
+static const char tailstr[] = "-----\n";
+#define BEGINLEN ((int)(sizeof(beginstr) - 1))
+#define ENDLEN ((int)(sizeof(endstr) - 1))
+#define TAILLEN ((int)(sizeof(tailstr) - 1))
+static int get_name(BIO *bp, char **name, unsigned int flags)
+{
+ char *linebuf;
+ int ret = 0;
+ int len;
+ int first_call = 1;
+
+ /*
+ * Need to hold trailing NUL (accounted for by BIO_gets() and the newline
+ * that will be added by sanitize_line() (the extra '1').
+ */
+ linebuf = pem_malloc(LINESIZE + 1, flags);
+ if (linebuf == NULL) {
+ PEMerr(PEM_F_GET_NAME, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ do {
+ len = BIO_gets(bp, linebuf, LINESIZE);
+
+ if (len <= 0) {
+ PEMerr(PEM_F_GET_NAME, PEM_R_NO_START_LINE);
+ goto err;
+ }
+
+ /* Strip trailing garbage and standardize ending. */
+ len = sanitize_line(linebuf, len, flags & ~PEM_FLAG_ONLY_B64, first_call);
+ first_call = 0;
+
+ /* Allow leading empty or non-matching lines. */
+ } while (strncmp(linebuf, beginstr, BEGINLEN) != 0
+ || len < TAILLEN
+ || strncmp(linebuf + len - TAILLEN, tailstr, TAILLEN) != 0);
+ linebuf[len - TAILLEN] = '\0';
+ len = len - BEGINLEN - TAILLEN + 1;
+ *name = pem_malloc(len, flags);
+ if (*name == NULL) {
+ PEMerr(PEM_F_GET_NAME, ERR_R_MALLOC_FAILURE);