Fixed error reporting in case of PEM encoding error when decoding certificates.

diff --git a/tools/files.c b/tools/files.c
index 07af6c4..21c8166 100644 (file)
--- a/tools/files.c
+++ b/tools/files.c
@@ -172,6 +172,7 @@ decode_pem(const void *src, size_t len, size_t *num)
        bvector bv = VEC_INIT;
        int inobj;
 
+       *num = 0;
        br_pem_decoder_init(&pc);
        buf = src;
        inobj = 0;
@@ -267,6 +268,9 @@ read_certificates(const char *fname, size_t *num)
 
        pos = decode_pem(buf, len, &num_pos);
        xfree(buf);
+       if (pos == NULL) {
+               return NULL;
+       }
        for (u = 0; u < num_pos; u ++) {
                if (eqstr(pos[u].name, "CERTIFICATE")
                        || eqstr(pos[u].name, "X509 CERTIFICATE"))