+static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf)
+ {
+ CONF *cnf = NULL;
+ int len;
+ long errline;
+ unsigned char *p;
+ ASN1_TYPE *atyp = NULL;
+
+ if (genconf)
+ {
+ cnf = NCONF_new(NULL);
+ if (!NCONF_load(cnf, genconf, &errline))
+ goto conferr;
+ if (!genstr)
+ genstr = NCONF_get_string(cnf, "default", "asn1");
+ if (!genstr)
+ {
+ BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf);
+ goto err;
+ }
+ }
+
+ atyp = ASN1_generate_nconf(genstr, cnf);
+ NCONF_free(cnf);
+ cnf = NULL;
+
+ if (!atyp)
+ return -1;
+
+ len = i2d_ASN1_TYPE(atyp, NULL);
+
+ if (len <= 0)
+ goto err;
+
+ if (!BUF_MEM_grow(buf,len))
+ goto err;
+
+ p=(unsigned char *)buf->data;
+
+ i2d_ASN1_TYPE(atyp, &p);
+
+ ASN1_TYPE_free(atyp);
+ return len;
+
+ conferr:
+
+ if (errline > 0)
+ BIO_printf(bio, "Error on line %ld of config file '%s'\n",
+ errline, genconf);
+ else
+ BIO_printf(bio, "Error loading config file '%s'\n", genconf);
+
+ err:
+ NCONF_free(cnf);
+ ASN1_TYPE_free(atyp);
+
+ return -1;
+
+ }