commit b2555168ecf6e88ad9aeb0ad4f7b7a714901d575
author KaoruToda <kunnpuu@gmail.com> Fri Oct 20 22:58:46 2017 -0400
committer Rich Salz <rsalz@openssl.org> Fri Oct 20 22:58:46 2017 -0400
tree b6fd7dd897650fd824bcbfaaac76825e867a9cc6
parent 9b02dc97e4963969da69675a871dbe80e6d31cda

Various clean-ups

Add a check for NULL return in t1_lib.c.
    Since return type of ssl_cert_lookup_by_idx is pointer and unify coding
    style, I changed from zero to NULL in ssl_cert.c.

Remove unnecessary space for ++.

Fix incorrect condition
    Expression is always false because 'else if' condition matches previous
    condition.  SInce the next line of 'else if' condition has substituted
    TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2, the 'else if'
    condition should compare with NID_X9_62_characteristic_two_field.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4562)

ssl/ssl_cert.c

diff --git a/ssl/ssl_cert.c b/ssl/ssl_cert.c
index 3de3c2c..43b084d 100644
--- a/ssl/ssl_cert.c
+++ b/ssl/ssl_cert.c
@@ -1002,6 +1002,6 @@
 const SSL_CERT_LOOKUP *ssl_cert_lookup_by_idx(size_t idx)
 {
     if (idx >= OSSL_NELEM(ssl_cert_info))
-        return 0;
+        return NULL;
     return &ssl_cert_info[idx];
 }

ssl/t1_lib.c

diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index bb097ed..28b25e1 100644
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -445,7 +445,7 @@
 
         if (field_type == NID_X9_62_prime_field)
             comp_id = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime;
-        else if (field_type == NID_X9_62_prime_field)
+        else if (field_type == NID_X9_62_characteristic_two_field)
             comp_id = TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2;
         else
             return 0;
@@ -1403,7 +1403,7 @@
      * in disabled_mask.
      */
     sigalgslen = tls12_get_psigalgs(s, 1, &sigalgs);
-    for (i = 0; i < sigalgslen; i ++, sigalgs++) {
+    for (i = 0; i < sigalgslen; i++, sigalgs++) {
         const SIGALG_LOOKUP *lu = tls1_lookup_sigalg(*sigalgs);
         const SSL_CERT_LOOKUP *clu;
 
@@ -1411,6 +1411,8 @@
             continue;
 
         clu = ssl_cert_lookup_by_idx(lu->sig_idx);
+	if (clu == NULL)
+		continue;
 
         /* If algorithm is disabled see if we can enable it */
         if ((clu->amask & disabled_mask) != 0