Fix segfault with empty fields as last in the config.

Reviewed-by: Tim Hudson <tjh@openssl.org>

diff --git a/crypto/asn1/asn1_gen.c b/crypto/asn1/asn1_gen.c
index 132a9ef468f69bbd473e31f71aa69901303863f2..aaec009f2266b6718e791eb40033485758255b7c 100644 (file)
--- a/crypto/asn1/asn1_gen.c
+++ b/crypto/asn1/asn1_gen.c
@@ -279,6 +279,9 @@ static int asn1_cb(const char *elem, int len, void *bitstr)
 
     int tmp_tag, tmp_class;
 
+    if (elem == NULL)
+        return 0;
+
     for (i = 0, p = elem; i < len; p++, i++) {
         /* Look for the ':' in name value pairs */
         if (*p == ':') {

diff --git a/crypto/engine/eng_fat.c b/crypto/engine/eng_fat.c
index bcb4c446b2a91f50402344e9049e694d28e5e42e..4279dd94b135b73f340abd5fce1ee1ece9b990f6 100644 (file)
--- a/crypto/engine/eng_fat.c
+++ b/crypto/engine/eng_fat.c
@@ -103,6 +103,8 @@ int ENGINE_set_default(ENGINE *e, unsigned int flags)
 static int int_def_cb(const char *alg, int len, void *arg)
 {
     unsigned int *pflags = arg;
+    if (alg == NULL)
+        return 0;
     if (!strncmp(alg, "ALL", len))
         *pflags |= ENGINE_METHOD_ALL;
     else if (!strncmp(alg, "RSA", len))

diff --git a/ssl/ssl_conf.c b/ssl/ssl_conf.c
index 0ee6e46423fc1633e74864f9729f883ac8970c5e..d950242f0ba7049055806a21af40a8d25ad191cd 100644 (file)
--- a/ssl/ssl_conf.c
+++ b/ssl/ssl_conf.c
@@ -167,6 +167,8 @@ static int ssl_set_option_list(const char *elem, int len, void *usr)
      * len == -1 indicates not being called in list context, just for single
      * command line switches, so don't allow +, -.
      */
+    if (elem == NULL)
+        return 0;
     if (len != -1) {
         if (*elem == '+') {
             elem++;

diff --git a/ssl/t1_lib.c b/ssl/t1_lib.c
index 90ef867931487c56e98f3b0d250e97b0c6e11f00..2c3a1ec4bc1f8ef9e98b6c3704c173dc811737a8 100644 (file)
--- a/ssl/t1_lib.c
+++ b/ssl/t1_lib.c
@@ -651,6 +651,8 @@ static int nid_cb(const char *elem, int len, void *arg)
     size_t i;
     int nid;
     char etmp[20];
+    if (elem == NULL)
+        return 0;
     if (narg->nidcnt == MAX_CURVELIST)
         return 0;
     if (len > (int)(sizeof(etmp) - 1))
@@ -3948,6 +3950,8 @@ static int sig_cb(const char *elem, int len, void *arg)
     size_t i;
     char etmp[20], *p;
     int sig_alg, hash_alg;
+    if (elem == NULL)
+        return 0;
     if (sarg->sigalgcnt == MAX_SIGALGLEN)
         return 0;
     if (len > (int)(sizeof(etmp) - 1))