check return value of alloc functions, from Charles Longeau

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@21745 ec53bebd-3082-4978-b11e-865c3cabbd6b

kadmin/get.c

@@ -87,6 +87,8 @@ static int
 add_column(struct get_entry_data *data, struct field_name *ff, const char *header)
 {
     struct field_info *f = malloc(sizeof(*f));
+    if (f == NULL)
+	return ENOMEM;
     f->ff = ff;
     if(header)
 	f->header = strdup(header);

kadmin/random_password.c

@@ -123,7 +123,11 @@ generate_password(char **pw, int num_classes, ...)
     unsigned char rbuf[8]; /* random buffer */
     int rleft = 0;
 
+    *pw = NULL;
+
     classes = malloc(num_classes * sizeof(*classes));
+    if(classes == NULL)
+	return;
     va_start(ap, num_classes);
     len = 0;
     for(i = 0; i < num_classes; i++){

kadmin/util.c

@@ -648,6 +648,10 @@ parse_des_key (const char *key_string, krb5_key_data *key_data,
 	key_data[i].key_data_type[0]     = ETYPE_DES_CBC_CRC;
 	key_data[i].key_data_length[0]   = 8;
 	key_data[i].key_data_contents[0] = malloc(8);
+	if (key_data[i].key_data_contents[0] == NULL) {
+	    *error = "malloc";
+	    return ENOMEM;
+	}
 	memcpy (key_data[i].key_data_contents[0], bits, 8);
 	/* salt */
 	key_data[i].key_data_type[1]     = KRB5_PW_SALT;