Run util/openssl-format-source -v -c .
[openssl.git] / demos / engines / cluster_labs / hw_cluster_labs.c
index 036f48bafac46bca3898a5c9ccd90d88fa99d202..c58e548f16d9e623fca9e8ef819c8e8d44142744 100644 (file)
@@ -1,6 +1,7 @@
 /* crypto/engine/hw_cluster_labs.c */
-/* Written by Jan Tschirschwitz (jan.tschirschwitz@cluster-labs.com
- * for the OpenSSL project 2000.
+/*
+ * Written by Jan Tschirschwitz (jan.tschirschwitz@cluster-labs.com for the
+ * OpenSSL project 2000.
  */
 /* ====================================================================
  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
@@ -10,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -56,7 +57,7 @@
  *
  */
 
-#define MSC_VER   /* only used cryptic.h */
+#define MSC_VER                 /* only used cryptic.h */
 
 #include <stdio.h>
 #include <openssl/crypto.h>
 #include <openssl/engine.h>
 
 #ifndef NO_HW
-#ifndef NO_HW_CLUSTER_LABS
+# ifndef NO_HW_CLUSTER_LABS
 
-#ifdef FLAT_INC
-#include "cluster_labs.h"
-#else
-#include "vendor_defns/cluster_labs.h"
-#endif
-
-#define CL_LIB_NAME "cluster_labs engine"
-#include "hw_cluster_labs_err.c"
+#  ifdef FLAT_INC
+#   include "cluster_labs.h"
+#  else
+#   include "vendor_defns/cluster_labs.h"
+#  endif
 
+#  define CL_LIB_NAME "cluster_labs engine"
+#  include "hw_cluster_labs_err.c"
 
 static int cluster_labs_destroy(ENGINE *e);
 static int cluster_labs_init(ENGINE *e);
 static int cluster_labs_finish(ENGINE *e);
-static int cluster_labs_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
-
+static int cluster_labs_ctrl(ENGINE *e, int cmd, long i, void *p,
+                             void (*f) ());
 
 /* BIGNUM stuff */
 /* This function is aliased to mod_exp (with the mont stuff dropped). */
-static int cluster_labs_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
-               const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
-               
+static int cluster_labs_mod_exp_mont(BIGNUM *r, const BIGNUM *a,
+                                     const BIGNUM *p, const BIGNUM *m,
+                                     BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+
 /* RSA stuff */
-#ifndef OPENSSL_NO_RSA
+#  ifndef OPENSSL_NO_RSA
 static int cluster_labs_rsa_pub_enc(int flen, const unsigned char *from,
-            unsigned char *to, RSA *rsa, int padding);
+                                    unsigned char *to, RSA *rsa, int padding);
 static int cluster_labs_rsa_pub_dec(int flen, const unsigned char *from,
-            unsigned char *to, RSA *rsa, int padding);
-static int cluster_labs_rsa_priv_enc(int flen, const unsigned char *from, 
-               unsigned char *to, RSA *rsa, int padding);
-static int cluster_labs_rsa_priv_dec(int flen, const unsigned char *from, 
-               unsigned char *to, RSA *rsa, int padding);
+                                    unsigned char *to, RSA *rsa, int padding);
+static int cluster_labs_rsa_priv_enc(int flen, const unsigned char *from,
+                                     unsigned char *to, RSA *rsa,
+                                     int padding);
+static int cluster_labs_rsa_priv_dec(int flen, const unsigned char *from,
+                                     unsigned char *to, RSA *rsa,
+                                     int padding);
 static int cluster_labs_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa);
-#endif
+#  endif
 
 /* DSA stuff */
-#ifndef OPENSSL_NO_DSA
-static DSA_SIG *cluster_labs_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa);
+#  ifndef OPENSSL_NO_DSA
+static DSA_SIG *cluster_labs_dsa_sign(const unsigned char *dgst, int dlen,
+                                      DSA *dsa);
 static int cluster_labs_dsa_verify(const unsigned char *dgst, int dgst_len,
-                               DSA_SIG *sig, DSA *dsa);
+                                   DSA_SIG *sig, DSA *dsa);
 static int cluster_labs_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
-               BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
-               BN_CTX *ctx, BN_MONT_CTX *in_mont);
+                                    BIGNUM *p1, BIGNUM *a2, BIGNUM *p2,
+                                    BIGNUM *m, BN_CTX *ctx,
+                                    BN_MONT_CTX *in_mont);
 static int cluster_labs_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
-               const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
-               BN_MONT_CTX *m_ctx);
-#endif
-                                                               
+                                    const BIGNUM *p, const BIGNUM *m,
+                                    BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+#  endif
+
 /* DH stuff */
-#ifndef OPENSSL_NO_DH
+#  ifndef OPENSSL_NO_DH
 /* This function is alised to mod_exp (with the DH and mont dropped). */
-static int cluster_labs_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a, const BIGNUM *p, 
-               const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
-#endif
-               
-/* RANDOM stuff */                                             
+static int cluster_labs_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
+                                   const BIGNUM *p, const BIGNUM *m,
+                                   BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+#  endif
+
+/* RANDOM stuff */
 static int cluster_labs_rand_bytes(unsigned char *buf, int num);
 
 /* The definitions for control commands specific to this engine */
-#define CLUSTER_LABS_CMD_SO_PATH               ENGINE_CMD_BASE
-static const ENGINE_CMD_DEFN cluster_labs_cmd_defns[] =
-       {
-       { CLUSTER_LABS_CMD_SO_PATH,
-         "SO_PATH",
-         "Specifies the path to the 'cluster labs' shared library",
-         ENGINE_CMD_FLAG_STRING
-       },
-       {0, NULL, NULL, 0}
-       };
+#  define CLUSTER_LABS_CMD_SO_PATH                ENGINE_CMD_BASE
+static const ENGINE_CMD_DEFN cluster_labs_cmd_defns[] = {
+    {CLUSTER_LABS_CMD_SO_PATH,
+     "SO_PATH",
+     "Specifies the path to the 'cluster labs' shared library",
+     ENGINE_CMD_FLAG_STRING},
+    {0, NULL, NULL, 0}
+};
 
 /* Our internal RSA_METHOD that we provide pointers to */
-#ifndef OPENSSL_NO_RSA
-static RSA_METHOD cluster_labs_rsa =
-       {
-       "Cluster Labs RSA method",
-       cluster_labs_rsa_pub_enc,       /* rsa_pub_enc */
-       cluster_labs_rsa_pub_dec,       /* rsa_pub_dec */
-       cluster_labs_rsa_priv_enc,      /* rsa_priv_enc */
-       cluster_labs_rsa_priv_dec,      /* rsa_priv_dec */
-       cluster_labs_rsa_mod_exp,       /* rsa_mod_exp */
-       cluster_labs_mod_exp_mont,      /* bn_mod_exp */
-       NULL,                           /* init */
-       NULL,                           /* finish */
-       0,                              /* flags */
-       NULL,                           /* apps_data */
-       NULL,                           /* rsa_sign */
-       NULL                            /* rsa_verify */
-       };
-#endif
+#  ifndef OPENSSL_NO_RSA
+static RSA_METHOD cluster_labs_rsa = {
+    "Cluster Labs RSA method",
+    cluster_labs_rsa_pub_enc,   /* rsa_pub_enc */
+    cluster_labs_rsa_pub_dec,   /* rsa_pub_dec */
+    cluster_labs_rsa_priv_enc,  /* rsa_priv_enc */
+    cluster_labs_rsa_priv_dec,  /* rsa_priv_dec */
+    cluster_labs_rsa_mod_exp,   /* rsa_mod_exp */
+    cluster_labs_mod_exp_mont,  /* bn_mod_exp */
+    NULL,                       /* init */
+    NULL,                       /* finish */
+    0,                          /* flags */
+    NULL,                       /* apps_data */
+    NULL,                       /* rsa_sign */
+    NULL                        /* rsa_verify */
+};
+#  endif
 
 /* Our internal DSA_METHOD that we provide pointers to */
-#ifndef OPENSSL_NO_DSA
-static DSA_METHOD cluster_labs_dsa =
-       {
-       "Cluster Labs DSA method",
-       cluster_labs_dsa_sign,          /* dsa_do_sign */
-       NULL,                           /* dsa_sign_setup */
-       cluster_labs_dsa_verify,        /* dsa_do_verify */
-       cluster_labs_dsa_mod_exp,       /* dsa_mod_exp */
-       cluster_labs_mod_exp_dsa,       /* bn_mod_exp */
-       NULL,                           /* init */
-       NULL,                           /* finish */
-       0,                              /* flags */
-       NULL                            /* app_data */
-       };
-#endif 
+#  ifndef OPENSSL_NO_DSA
+static DSA_METHOD cluster_labs_dsa = {
+    "Cluster Labs DSA method",
+    cluster_labs_dsa_sign,      /* dsa_do_sign */
+    NULL,                       /* dsa_sign_setup */
+    cluster_labs_dsa_verify,    /* dsa_do_verify */
+    cluster_labs_dsa_mod_exp,   /* dsa_mod_exp */
+    cluster_labs_mod_exp_dsa,   /* bn_mod_exp */
+    NULL,                       /* init */
+    NULL,                       /* finish */
+    0,                          /* flags */
+    NULL                        /* app_data */
+};
+#  endif
 
 /* Our internal DH_METHOD that we provide pointers to */
-#ifndef OPENSSL_NO_DH
-static DH_METHOD cluster_labs_dh =
-       {
-       "Cluster Labs DH method",
-       NULL,                           /* generate key */
-       NULL,                           /* compute key */
-       cluster_labs_mod_exp_dh,        /* bn_mod_exp */
-       NULL,                           /* init */
-       NULL,                           /* finish */
-       0,                              /* flags */
-       NULL                            /* app_data */
-       };
-#endif 
-       
-static RAND_METHOD cluster_labs_rand =
-       {
-       /* "Cluster Labs RAND method", */
-       NULL,                           /* seed */
-       cluster_labs_rand_bytes,        /* bytes */
-       NULL,                           /* cleanup */
-       NULL,                           /* add */
-       cluster_labs_rand_bytes,        /* pseudorand */
-       NULL,                           /* status */
-       };      
+#  ifndef OPENSSL_NO_DH
+static DH_METHOD cluster_labs_dh = {
+    "Cluster Labs DH method",
+    NULL,                       /* generate key */
+    NULL,                       /* compute key */
+    cluster_labs_mod_exp_dh,    /* bn_mod_exp */
+    NULL,                       /* init */
+    NULL,                       /* finish */
+    0,                          /* flags */
+    NULL                        /* app_data */
+};
+#  endif
+
+static RAND_METHOD cluster_labs_rand = {
+    /* "Cluster Labs RAND method", */
+    NULL,                       /* seed */
+    cluster_labs_rand_bytes,    /* bytes */
+    NULL,                       /* cleanup */
+    NULL,                       /* add */
+    cluster_labs_rand_bytes,    /* pseudorand */
+    NULL,                       /* status */
+};
 
 static const char *engine_cluster_labs_id = "cluster_labs";
-static const char *engine_cluster_labs_name = "Cluster Labs hardware engine support";
+static const char *engine_cluster_labs_name =
+    "Cluster Labs hardware engine support";
 
 /* engine implementation */
-/*-----------------------*/
+/* ---------------------*/
 static int bind_helper(ENGINE *e)
-       {
-       
-       if(!ENGINE_set_id(e, engine_cluster_labs_id) ||
-                       !ENGINE_set_name(e, engine_cluster_labs_name) ||
-#ifndef OPENSSL_NO_RSA
-                       !ENGINE_set_RSA(e, &cluster_labs_rsa) ||
-#endif
-#ifndef OPENSSL_NO_DSA
-                       !ENGINE_set_DSA(e, &cluster_labs_dsa) ||
-#endif
-#ifndef OPENSSL_NO_DH
-                       !ENGINE_set_DH(e, &cluster_labs_dh) ||
-#endif
-                       !ENGINE_set_RAND(e, &cluster_labs_rand) ||
-                       !ENGINE_set_destroy_function(e, cluster_labs_destroy) ||
-                       !ENGINE_set_init_function(e, cluster_labs_init) ||
-                       !ENGINE_set_finish_function(e, cluster_labs_finish) ||
-                       !ENGINE_set_ctrl_function(e, cluster_labs_ctrl) ||
-                       !ENGINE_set_cmd_defns(e, cluster_labs_cmd_defns))
-               return 0;
-       /* Ensure the error handling is set up */
-       ERR_load_CL_strings();
-       return 1;
-       }
-       
-#ifndef ENGINE_DYNAMIC_SUPPORT
+{
+
+    if (!ENGINE_set_id(e, engine_cluster_labs_id) ||
+        !ENGINE_set_name(e, engine_cluster_labs_name) ||
+#  ifndef OPENSSL_NO_RSA
+        !ENGINE_set_RSA(e, &cluster_labs_rsa) ||
+#  endif
+#  ifndef OPENSSL_NO_DSA
+        !ENGINE_set_DSA(e, &cluster_labs_dsa) ||
+#  endif
+#  ifndef OPENSSL_NO_DH
+        !ENGINE_set_DH(e, &cluster_labs_dh) ||
+#  endif
+        !ENGINE_set_RAND(e, &cluster_labs_rand) ||
+        !ENGINE_set_destroy_function(e, cluster_labs_destroy) ||
+        !ENGINE_set_init_function(e, cluster_labs_init) ||
+        !ENGINE_set_finish_function(e, cluster_labs_finish) ||
+        !ENGINE_set_ctrl_function(e, cluster_labs_ctrl) ||
+        !ENGINE_set_cmd_defns(e, cluster_labs_cmd_defns))
+        return 0;
+    /* Ensure the error handling is set up */
+    ERR_load_CL_strings();
+    return 1;
+}
+
+#  ifndef ENGINE_DYNAMIC_SUPPORT
 static ENGINE *engine_cluster_labs(void)
-       {
-       ENGINE *ret = ENGINE_new();
-
-       if(!ret)
-               return NULL;
-       if(!bind_helper(ret))
-               {
-               ENGINE_free(ret);
-               return NULL;
-               }
-       return ret;
-       }
-
-#ifdef ENGINE_DYNAMIC_SUPPORT
+{
+    ENGINE *ret = ENGINE_new();
+
+    if (!ret)
+        return NULL;
+    if (!bind_helper(ret)) {
+        ENGINE_free(ret);
+        return NULL;
+    }
+    return ret;
+}
+
+#   ifdef ENGINE_DYNAMIC_SUPPORT
 static
-#endif
+#   endif
 void ENGINE_load_cluster_labs(void)
-       {
+{
 
-       ENGINE *cluster_labs = engine_cluster_labs();
-       
-       if(!cluster_labs) return;
-       ENGINE_add(cluster_labs);
-       ENGINE_free(cluster_labs);
-       ERR_clear_error();
-       }
-#endif /* !ENGINE_DYNAMIC_SUPPORT */
+    ENGINE *cluster_labs = engine_cluster_labs();
 
-static int cluster_labs_destroy(ENGINE *e)
-       {
-       
-       ERR_unload_CL_strings();
-       return 1;
-       }
+    if (!cluster_labs)
+        return;
+    ENGINE_add(cluster_labs);
+    ENGINE_free(cluster_labs);
+    ERR_clear_error();
+}
+#  endif                        /* !ENGINE_DYNAMIC_SUPPORT */
 
+static int cluster_labs_destroy(ENGINE *e)
+{
 
+    ERR_unload_CL_strings();
+    return 1;
+}
 
-/* This is a process-global DSO handle used for loading and unloading
- * the Cluster Labs library. NB: This is only set (or unset) during an
- * init() or finish() call (reference counts permitting) and they're
- * operating with global locks, so this should be thread-safe
- * implicitly. */
+/*
+ * This is a process-global DSO handle used for loading and unloading the
+ * Cluster Labs library. NB: This is only set (or unset) during an init() or
+ * finish() call (reference counts permitting) and they're operating with
+ * global locks, so this should be thread-safe implicitly.
+ */
 static DSO *cluster_labs_dso = NULL;
 
-/* These are the function pointers that are (un)set when the library has
- * successfully (un)loaded. */
-static cl_engine_init          *p_cl_engine_init                = NULL;
-static cl_mod_exp              *p_cl_mod_exp                    = NULL;
-static cl_mod_exp_crt          *p_cl_mod_exp_crt                = NULL;
-static cl_rsa_mod_exp          *p_cl_rsa_mod_exp                = NULL;
-static cl_rsa_priv_enc         *p_cl_rsa_priv_enc               = NULL;
-static cl_rsa_priv_dec         *p_cl_rsa_priv_dec               = NULL;
-static cl_rsa_pub_enc          *p_cl_rsa_pub_enc                = NULL;
-static cl_rsa_pub_dec          *p_cl_rsa_pub_dec                = NULL;
-static cl_rand_bytes           *p_cl_rand_bytes                 = NULL;
-static cl_dsa_sign             *p_cl_dsa_sign                   = NULL;
-static cl_dsa_verify           *p_cl_dsa_verify                 = NULL;
-
+/*
+ * These are the function pointers that are (un)set when the library has
+ * successfully (un)loaded.
+ */
+static cl_engine_init *p_cl_engine_init = NULL;
+static cl_mod_exp *p_cl_mod_exp = NULL;
+static cl_mod_exp_crt *p_cl_mod_exp_crt = NULL;
+static cl_rsa_mod_exp *p_cl_rsa_mod_exp = NULL;
+static cl_rsa_priv_enc *p_cl_rsa_priv_enc = NULL;
+static cl_rsa_priv_dec *p_cl_rsa_priv_dec = NULL;
+static cl_rsa_pub_enc *p_cl_rsa_pub_enc = NULL;
+static cl_rsa_pub_dec *p_cl_rsa_pub_dec = NULL;
+static cl_rand_bytes *p_cl_rand_bytes = NULL;
+static cl_dsa_sign *p_cl_dsa_sign = NULL;
+static cl_dsa_verify *p_cl_dsa_verify = NULL;
 
 int cluster_labs_init(ENGINE *e)
-       {
-
-       cl_engine_init                  *p1;
-       cl_mod_exp                      *p2;
-       cl_mod_exp_crt                  *p3;
-       cl_rsa_mod_exp                  *p4;
-       cl_rsa_priv_enc                 *p5;
-       cl_rsa_priv_dec                 *p6;    
-       cl_rsa_pub_enc                  *p7;
-       cl_rsa_pub_dec                  *p8;
-       cl_rand_bytes                   *p20;
-       cl_dsa_sign                     *p30;   
-       cl_dsa_verify                   *p31;           
-       
-       /* engine already loaded */
-       if(cluster_labs_dso != NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_INIT,CL_R_ALREADY_LOADED);
-               goto err;
-               }
-       /* try to load engine    */     
-       cluster_labs_dso = DSO_load(NULL, CLUSTER_LABS_LIB_NAME, NULL,0);
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_INIT,CL_R_DSO_FAILURE);
-               goto err;
-               }
-       /* bind functions */
-       if(     !(p1 = (cl_engine_init *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F1)) ||
-               !(p2 = (cl_mod_exp *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F2)) ||                  
-               !(p3 = (cl_mod_exp_crt *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F3)) ||                          
-               !(p4 = (cl_rsa_mod_exp *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F4)) ||                          
-               !(p5 = (cl_rsa_priv_enc *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F5)) ||
-               !(p6 = (cl_rsa_priv_dec *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F6)) ||
-               !(p7 = (cl_rsa_pub_enc *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F7)) ||
-               !(p8 = (cl_rsa_pub_dec *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F8)) ||
-               !(p20= (cl_rand_bytes *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F20)) ||
-               !(p30= (cl_dsa_sign *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F30)) ||
-               !(p31= (cl_dsa_verify *)DSO_bind_func(
-                               cluster_labs_dso, CLUSTER_LABS_F31)))
-               {
-               CLerr(CL_F_CLUSTER_LABS_INIT,CL_R_DSO_FAILURE);
-               goto err;
-               }
-               
-       /* copy function pointers */
-       p_cl_engine_init                = p1;
-       p_cl_mod_exp                    = p2;
-       p_cl_mod_exp_crt                = p3;   
-       p_cl_rsa_mod_exp                = p4;
-       p_cl_rsa_priv_enc               = p5;
-       p_cl_rsa_priv_dec               = p6;
-       p_cl_rsa_pub_enc                = p7;
-       p_cl_rsa_pub_dec                = p8;
-       p_cl_rand_bytes                 = p20;  
-       p_cl_dsa_sign                   = p30;
-       p_cl_dsa_verify                 = p31;  
-       
-       
-       
-       /* cluster labs engine init */
-       if(p_cl_engine_init()== 0){
-               CLerr(CL_F_CLUSTER_LABS_INIT,CL_R_INIT_FAILED);         
-               goto err;
-       }
-
-       return(1);
-
-err:   
-       /* reset all pointers */
-       if(cluster_labs_dso)
-               DSO_free(cluster_labs_dso);
-
-       cluster_labs_dso                = NULL;
-       p_cl_engine_init                = NULL; 
-       p_cl_mod_exp                    = NULL;
-       p_cl_mod_exp_crt                = NULL;
-       p_cl_rsa_mod_exp                = NULL;
-       p_cl_rsa_priv_enc               = NULL;
-       p_cl_rsa_priv_dec               = NULL; 
-       p_cl_rsa_pub_enc                = NULL;
-       p_cl_rsa_pub_dec                = NULL; 
-       p_cl_rand_bytes                 = NULL; 
-       p_cl_dsa_sign                   = NULL;
-       p_cl_dsa_verify                 = NULL; 
-       
-       return(0);
-       }
-       
+{
+
+    cl_engine_init *p1;
+    cl_mod_exp *p2;
+    cl_mod_exp_crt *p3;
+    cl_rsa_mod_exp *p4;
+    cl_rsa_priv_enc *p5;
+    cl_rsa_priv_dec *p6;
+    cl_rsa_pub_enc *p7;
+    cl_rsa_pub_dec *p8;
+    cl_rand_bytes *p20;
+    cl_dsa_sign *p30;
+    cl_dsa_verify *p31;
+
+    /* engine already loaded */
+    if (cluster_labs_dso != NULL) {
+        CLerr(CL_F_CLUSTER_LABS_INIT, CL_R_ALREADY_LOADED);
+        goto err;
+    }
+    /* try to load engine    */
+    cluster_labs_dso = DSO_load(NULL, CLUSTER_LABS_LIB_NAME, NULL, 0);
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_INIT, CL_R_DSO_FAILURE);
+        goto err;
+    }
+    /* bind functions */
+    if (!
+        (p1 =
+         (cl_engine_init *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F1))
+|| !(p2 = (cl_mod_exp *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F2))
+|| !(p3 = (cl_mod_exp_crt *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F3))
+|| !(p4 = (cl_rsa_mod_exp *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F4))
+|| !(p5 =
+     (cl_rsa_priv_enc *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F5))
+|| !(p6 =
+     (cl_rsa_priv_dec *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F6))
+|| !(p7 = (cl_rsa_pub_enc *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F7))
+|| !(p8 = (cl_rsa_pub_dec *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F8))
+|| !(p20 =
+     (cl_rand_bytes *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F20))
+|| !(p30 = (cl_dsa_sign *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F30))
+|| !(p31 =
+     (cl_dsa_verify *) DSO_bind_func(cluster_labs_dso, CLUSTER_LABS_F31))) {
+        CLerr(CL_F_CLUSTER_LABS_INIT, CL_R_DSO_FAILURE);
+        goto err;
+    }
+
+    /* copy function pointers */
+    p_cl_engine_init = p1;
+    p_cl_mod_exp = p2;
+    p_cl_mod_exp_crt = p3;
+    p_cl_rsa_mod_exp = p4;
+    p_cl_rsa_priv_enc = p5;
+    p_cl_rsa_priv_dec = p6;
+    p_cl_rsa_pub_enc = p7;
+    p_cl_rsa_pub_dec = p8;
+    p_cl_rand_bytes = p20;
+    p_cl_dsa_sign = p30;
+    p_cl_dsa_verify = p31;
+
+    /* cluster labs engine init */
+    if (p_cl_engine_init() == 0) {
+        CLerr(CL_F_CLUSTER_LABS_INIT, CL_R_INIT_FAILED);
+        goto err;
+    }
+
+    return (1);
+
+ err:
+    /* reset all pointers */
+    if (cluster_labs_dso)
+        DSO_free(cluster_labs_dso);
+
+    cluster_labs_dso = NULL;
+    p_cl_engine_init = NULL;
+    p_cl_mod_exp = NULL;
+    p_cl_mod_exp_crt = NULL;
+    p_cl_rsa_mod_exp = NULL;
+    p_cl_rsa_priv_enc = NULL;
+    p_cl_rsa_priv_dec = NULL;
+    p_cl_rsa_pub_enc = NULL;
+    p_cl_rsa_pub_dec = NULL;
+    p_cl_rand_bytes = NULL;
+    p_cl_dsa_sign = NULL;
+    p_cl_dsa_verify = NULL;
+
+    return (0);
+}
 
 static int cluster_labs_finish(ENGINE *e)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_FINISH,CL_R_NOT_LOADED);
-               return 0;
-               }
-       if(!DSO_free(cluster_labs_dso))
-               {
-               CLerr(CL_F_CLUSTER_LABS_FINISH,CL_R_DSO_FAILURE);
-               return 0;
-               }
-               
-       cluster_labs_dso                = NULL;
-       p_cl_engine_init                = NULL;         
-       p_cl_mod_exp                    = NULL;
-       p_cl_rsa_mod_exp                = NULL; 
-       p_cl_mod_exp_crt                = NULL; 
-       p_cl_rsa_priv_enc               = NULL; 
-       p_cl_rsa_priv_dec               = NULL; 
-       p_cl_rsa_pub_enc                = NULL;
-       p_cl_rsa_pub_dec                = NULL; 
-       p_cl_rand_bytes                 = NULL;         
-       p_cl_dsa_sign                   = NULL;
-       p_cl_dsa_verify                 = NULL; 
-       
-       return(1);      
-       
-       }
-       
-static int cluster_labs_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)())
-       {
-       int initialised = ((cluster_labs_dso == NULL) ? 0 : 1);
-
-       switch(cmd)
-               {
-       case CLUSTER_LABS_CMD_SO_PATH:
-               if(p == NULL)
-                       {
-                       CLerr(CL_F_CLUSTER_LABS_CTRL,ERR_R_PASSED_NULL_PARAMETER);
-                       return 0;
-                       }
-               if(initialised)
-                       {
-                       CLerr(CL_F_CLUSTER_LABS_CTRL,CL_R_ALREADY_LOADED);
-                       return 0;
-                       }
-               CLUSTER_LABS_LIB_NAME = (const char *)p;
-               return 1;
-       default:
-               break;
-               }
-       CLerr(CL_F_CLUSTER_LABS_CTRL,CL_R_COMMAND_NOT_IMPLEMENTED);
-       return 0;
-       }
-       
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_FINISH, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (!DSO_free(cluster_labs_dso)) {
+        CLerr(CL_F_CLUSTER_LABS_FINISH, CL_R_DSO_FAILURE);
+        return 0;
+    }
+
+    cluster_labs_dso = NULL;
+    p_cl_engine_init = NULL;
+    p_cl_mod_exp = NULL;
+    p_cl_rsa_mod_exp = NULL;
+    p_cl_mod_exp_crt = NULL;
+    p_cl_rsa_priv_enc = NULL;
+    p_cl_rsa_priv_dec = NULL;
+    p_cl_rsa_pub_enc = NULL;
+    p_cl_rsa_pub_dec = NULL;
+    p_cl_rand_bytes = NULL;
+    p_cl_dsa_sign = NULL;
+    p_cl_dsa_verify = NULL;
+
+    return (1);
+
+}
+
+static int cluster_labs_ctrl(ENGINE *e, int cmd, long i, void *p,
+                             void (*f) ())
+{
+    int initialised = ((cluster_labs_dso == NULL) ? 0 : 1);
+
+    switch (cmd) {
+    case CLUSTER_LABS_CMD_SO_PATH:
+        if (p == NULL) {
+            CLerr(CL_F_CLUSTER_LABS_CTRL, ERR_R_PASSED_NULL_PARAMETER);
+            return 0;
+        }
+        if (initialised) {
+            CLerr(CL_F_CLUSTER_LABS_CTRL, CL_R_ALREADY_LOADED);
+            return 0;
+        }
+        CLUSTER_LABS_LIB_NAME = (const char *)p;
+        return 1;
+    default:
+        break;
+    }
+    CLerr(CL_F_CLUSTER_LABS_CTRL, CL_R_COMMAND_NOT_IMPLEMENTED);
+    return 0;
+}
 
 static int cluster_labs_mod_exp(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
-               const BIGNUM *m, BN_CTX *ctx)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_MOD_EXP,CL_R_NOT_LOADED);
-               return 0;
-               }       
-       if(p_cl_mod_exp == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_MOD_EXP,CL_R_FUNCTION_NOT_BINDED);
-               return 0;
-               }
-
-       return  p_cl_mod_exp(r, a, p, m, ctx);
-
-       }
-       
+                                const BIGNUM *m, BN_CTX *ctx)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_MOD_EXP, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_mod_exp == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_MOD_EXP, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_mod_exp(r, a, p, m, ctx);
+
+}
+
 static int cluster_labs_mod_exp_crt(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
-               const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
-               const BIGNUM *iqmp, BN_CTX *ctx)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_MOD_EXP_CRT,CL_R_NOT_LOADED);           
-               return 0;
-               }
-       if(p_cl_mod_exp_crt == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_MOD_EXP_CRT,CL_R_FUNCTION_NOT_BINDED);          
-               return 0;
-               }
-       
-       return  p_cl_mod_exp_crt(r, a, p, q,dmp1, dmq1, iqmp, ctx);
-       
-       }
-       
+                                    const BIGNUM *q, const BIGNUM *dmp1,
+                                    const BIGNUM *dmq1, const BIGNUM *iqmp,
+                                    BN_CTX *ctx)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_MOD_EXP_CRT, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_mod_exp_crt == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_MOD_EXP_CRT, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_mod_exp_crt(r, a, p, q, dmp1, dmq1, iqmp, ctx);
+
+}
+
 static int cluster_labs_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_MOD_EXP,CL_R_NOT_LOADED);           
-               return 0;
-               }
-       if(p_cl_rsa_mod_exp == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_MOD_EXP,CL_R_FUNCTION_NOT_BINDED);                          
-               return 0;
-               }
-
-       return p_cl_rsa_mod_exp(r0, I, rsa);
-
-       }
-       
-static DSA_SIG *cluster_labs_dsa_sign(const unsigned char *dgst, int dlen, DSA *dsa)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_DSA_SIGN,CL_R_NOT_LOADED);              
-               return 0;
-               }
-       if(p_cl_dsa_sign == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_DSA_SIGN,CL_R_FUNCTION_NOT_BINDED);                             
-               return 0;
-               }
-
-       return p_cl_dsa_sign(dgst, dlen, dsa);
-       
-       }
-       
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_MOD_EXP, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_rsa_mod_exp == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_MOD_EXP, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_rsa_mod_exp(r0, I, rsa);
+
+}
+
+static DSA_SIG *cluster_labs_dsa_sign(const unsigned char *dgst, int dlen,
+                                      DSA *dsa)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_DSA_SIGN, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_dsa_sign == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_DSA_SIGN, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_dsa_sign(dgst, dlen, dsa);
+
+}
+
 static int cluster_labs_dsa_verify(const unsigned char *dgst, int dgst_len,
-                               DSA_SIG *sig, DSA *dsa)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_DSA_VERIFY,CL_R_NOT_LOADED);            
-               return 0;
-               }
-       
-       if(p_cl_dsa_verify == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_DSA_VERIFY,CL_R_FUNCTION_NOT_BINDED);                           
-               return 0;
-               }
-
-       return p_cl_dsa_verify(dgst, dgst_len, sig, dsa);
-       
-       }                       
+                                   DSA_SIG *sig, DSA *dsa)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_DSA_VERIFY, CL_R_NOT_LOADED);
+        return 0;
+    }
+
+    if (p_cl_dsa_verify == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_DSA_VERIFY, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_dsa_verify(dgst, dgst_len, sig, dsa);
+
+}
 
 static int cluster_labs_dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1,
-               BIGNUM *p1, BIGNUM *a2, BIGNUM *p2, BIGNUM *m,
-               BN_CTX *ctx, BN_MONT_CTX *in_mont)
-       {
-       BIGNUM t;
-       int status = 0;
-               
-       BN_init(&t);
-       /* let rr = a1 ^ p1 mod m */
-       if (!cluster_labs_mod_exp(rr,a1,p1,m,ctx)) goto end;
-       /* let t = a2 ^ p2 mod m */
-       if (!cluster_labs_mod_exp(&t,a2,p2,m,ctx)) goto end;
-       /* let rr = rr * t mod m */
-       if (!BN_mod_mul(rr,rr,&t,m,ctx)) goto end;
-       status = 1;
-end:
-       BN_free(&t);
-       
-       return(1);
-
-       }
+                                    BIGNUM *p1, BIGNUM *a2, BIGNUM *p2,
+                                    BIGNUM *m, BN_CTX *ctx,
+                                    BN_MONT_CTX *in_mont)
+{
+    BIGNUM t;
+    int status = 0;
+
+    BN_init(&t);
+    /* let rr = a1 ^ p1 mod m */
+    if (!cluster_labs_mod_exp(rr, a1, p1, m, ctx))
+        goto end;
+    /* let t = a2 ^ p2 mod m */
+    if (!cluster_labs_mod_exp(&t, a2, p2, m, ctx))
+        goto end;
+    /* let rr = rr * t mod m */
+    if (!BN_mod_mul(rr, rr, &t, m, ctx))
+        goto end;
+    status = 1;
+ end:
+    BN_free(&t);
+
+    return (1);
+
+}
 
 static int cluster_labs_mod_exp_dsa(DSA *dsa, BIGNUM *r, BIGNUM *a,
-               const BIGNUM *p, const BIGNUM *m, BN_CTX *ctx,
-               BN_MONT_CTX *m_ctx)
-       {
-       return  cluster_labs_mod_exp(r, a, p, m, ctx);
-       }
-       
+                                    const BIGNUM *p, const BIGNUM *m,
+                                    BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+{
+    return cluster_labs_mod_exp(r, a, p, m, ctx);
+}
+
 /* This function is aliased to mod_exp (with the mont stuff dropped). */
-static int cluster_labs_mod_exp_mont(BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
-               const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
-       {
-       return  cluster_labs_mod_exp(r, a, p, m, ctx);
-       }
-       
+static int cluster_labs_mod_exp_mont(BIGNUM *r, const BIGNUM *a,
+                                     const BIGNUM *p, const BIGNUM *m,
+                                     BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+{
+    return cluster_labs_mod_exp(r, a, p, m, ctx);
+}
 
 /* This function is aliased to mod_exp (with the dh and mont dropped). */
-static int cluster_labs_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
-               const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
-       {
-       return  cluster_labs_mod_exp(r, a, p, m, ctx);
-       }
-
+static int cluster_labs_mod_exp_dh(const DH *dh, BIGNUM *r, const BIGNUM *a,
+                                   const BIGNUM *p, const BIGNUM *m,
+                                   BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+{
+    return cluster_labs_mod_exp(r, a, p, m, ctx);
+}
 
 static int cluster_labs_rsa_pub_enc(int flen, const unsigned char *from,
-            unsigned char *to, RSA *rsa, int padding)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PUB_ENC,CL_R_NOT_LOADED);           
-               return 0;
-               }
-       if(p_cl_rsa_priv_enc == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PUB_ENC,CL_R_FUNCTION_NOT_BINDED);                          
-               return 0;
-               }
-               
-       return  p_cl_rsa_pub_enc(flen, from, to, rsa, padding);
-       
-       }  
-            
+                                    unsigned char *to, RSA *rsa, int padding)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PUB_ENC, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_rsa_priv_enc == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PUB_ENC, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_rsa_pub_enc(flen, from, to, rsa, padding);
+
+}
+
 static int cluster_labs_rsa_pub_dec(int flen, const unsigned char *from,
-            unsigned char *to, RSA *rsa, int padding)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PUB_DEC,CL_R_NOT_LOADED);           
-               return 0;
-               }
-       if(p_cl_rsa_priv_enc == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PUB_DEC,CL_R_FUNCTION_NOT_BINDED);                          
-               return 0;
-               }
-               
-       return  p_cl_rsa_pub_dec(flen, from, to, rsa, padding);
-       
-       }  
-
-
-static int cluster_labs_rsa_priv_enc(int flen, const unsigned char *from, 
-               unsigned char *to, RSA *rsa, int padding)
-       {
-
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_ENC,CL_R_NOT_LOADED);          
-               return 0;
-               }
-
-       if(p_cl_rsa_priv_enc == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_ENC,CL_R_FUNCTION_NOT_BINDED);                         
-               return 0;
-               }
-               
-       return  p_cl_rsa_priv_enc(flen, from, to, rsa, padding);
-       
-       }  
-
-static int cluster_labs_rsa_priv_dec(int flen, const unsigned char *from, 
-               unsigned char *to, RSA *rsa, int padding)
-       {
-       
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_DEC,CL_R_NOT_LOADED);          
-               return 0;
-               }
-       if(p_cl_rsa_priv_dec == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_DEC,CL_R_FUNCTION_NOT_BINDED);                         
-               return 0;
-               }
-
-       return  p_cl_rsa_priv_dec(flen, from, to, rsa, padding);
-               
-       }  
+                                    unsigned char *to, RSA *rsa, int padding)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PUB_DEC, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_rsa_priv_enc == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PUB_DEC, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_rsa_pub_dec(flen, from, to, rsa, padding);
+
+}
+
+static int cluster_labs_rsa_priv_enc(int flen, const unsigned char *from,
+                                     unsigned char *to, RSA *rsa, int padding)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_ENC, CL_R_NOT_LOADED);
+        return 0;
+    }
+
+    if (p_cl_rsa_priv_enc == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_ENC, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_rsa_priv_enc(flen, from, to, rsa, padding);
+
+}
+
+static int cluster_labs_rsa_priv_dec(int flen, const unsigned char *from,
+                                     unsigned char *to, RSA *rsa, int padding)
+{
+
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_DEC, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_rsa_priv_dec == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RSA_PRIV_DEC, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
+
+    return p_cl_rsa_priv_dec(flen, from, to, rsa, padding);
+
+}
 
 /************************************************************************************
 * Symmetric algorithms
@@ -677,45 +649,44 @@ static int cluster_labs_rsa_priv_dec(int flen, const unsigned char *from,
 * Random generator
 ************************************************************************************/
 
-static int cluster_labs_rand_bytes(unsigned char *buf, int num){
+static int cluster_labs_rand_bytes(unsigned char *buf, int num)
+{
 
-       if(cluster_labs_dso == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RAND_BYTES,CL_R_NOT_LOADED);            
-               return 0;
-               }
-       if(p_cl_mod_exp_crt == NULL)
-               {
-               CLerr(CL_F_CLUSTER_LABS_RAND_BYTES,CL_R_FUNCTION_NOT_BINDED);                           
-               return 0;
-               }
+    if (cluster_labs_dso == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RAND_BYTES, CL_R_NOT_LOADED);
+        return 0;
+    }
+    if (p_cl_mod_exp_crt == NULL) {
+        CLerr(CL_F_CLUSTER_LABS_RAND_BYTES, CL_R_FUNCTION_NOT_BINDED);
+        return 0;
+    }
 
-       return  p_cl_rand_bytes(buf, num);
+    return p_cl_rand_bytes(buf, num);
 
 }
 
-
-/* This stuff is needed if this ENGINE is being compiled into a self-contained
- * shared-library. */
-#ifdef ENGINE_DYNAMIC_SUPPORT
+/*
+ * This stuff is needed if this ENGINE is being compiled into a
+ * self-contained shared-library.
+ */
+#  ifdef ENGINE_DYNAMIC_SUPPORT
 static int bind_fn(ENGINE *e, const char *id)
-       {
-       fprintf(stderr, "bind_fn CLUSTER_LABS\n");
-       if(id && (strcmp(id, engine_cluster_labs_id) != 0)) {
-               fprintf(stderr, "bind_fn return(0) first\n");
-               return 0;
-               }
-       if(!bind_helper(e)) {
-               fprintf(stderr, "bind_fn return(1) first\n");
-               return 0;
-               }
-       fprintf(stderr, "bind_fn return(1)\n");         
-       return 1;
-       }
-IMPLEMENT_DYNAMIC_CHECK_FN()
-IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
-#endif /* ENGINE_DYNAMIC_SUPPORT */
-                                               
-#endif /* !NO_HW_CLUSTER_LABS */
-#endif /* !NO_HW */
+{
+    fprintf(stderr, "bind_fn CLUSTER_LABS\n");
+    if (id && (strcmp(id, engine_cluster_labs_id) != 0)) {
+        fprintf(stderr, "bind_fn return(0) first\n");
+        return 0;
+    }
+    if (!bind_helper(e)) {
+        fprintf(stderr, "bind_fn return(1) first\n");
+        return 0;
+    }
+    fprintf(stderr, "bind_fn return(1)\n");
+    return 1;
+}
 
+IMPLEMENT_DYNAMIC_CHECK_FN()
+    IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
+#  endif                        /* ENGINE_DYNAMIC_SUPPORT */
+# endif                         /* !NO_HW_CLUSTER_LABS */
+#endif                          /* !NO_HW */