apps/srp.c

/* apps/srp.c */
/* Written by Peter Sylvester (peter.sylvester@edelweb.fr)  
 * for the EdelKey project and contributed to the OpenSSL project 2004.
 */
/* ====================================================================
 * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    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
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
#include <openssl/opensslconf.h>

#ifndef OPENSSL_NO_SRP
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/conf.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/txt_db.h>
#include <openssl/buffer.h>
#include <openssl/srp.h>

#include "apps.h"

#undef PROG
#define PROG srp_main

#define BASE_SECTION	"srp"
#define CONFIG_FILE "openssl.cnf"

#define ENV_RANDFILE		"RANDFILE"

#define ENV_DATABASE		"srpvfile"
#define ENV_DEFAULT_SRP		"default_srp"

static char *srp_usage[]={
"usage: srp [args] [user] \n",
"\n",
" -verbose        Talk alot while doing things\n",
" -config file    A config file\n",
" -name arg       The particular srp definition to use\n",
" -srpvfile arg   The srp verifier file name\n",
" -add            add an user and srp verifier\n",
" -modify         modify the srp verifier of an existing user\n",
" -delete         delete user from verifier file\n",
" -list           list user\n",
" -gn arg         g and N values to be used for new verifier\n",
" -userinfo arg   additional info to be set for user\n",
" -passin arg     input file pass phrase source\n",
" -passout arg    output file pass phrase source\n",
#ifndef OPENSSL_NO_ENGINE
" -engine e         - use engine e, possibly a hardware device.\n",
#endif
NULL
};

#ifdef EFENCE
extern int EF_PROTECT_FREE;
extern int EF_PROTECT_BELOW;
extern int EF_ALIGNMENT;
#endif

static CONF *conf=NULL;
static char *section=NULL;

#define VERBOSE if (verbose) 
#define VVERBOSE if (verbose>1) 


int MAIN(int, char **);

static int get_index(CA_DB *db, char* id, char type)
	{
	char ** pp;
	int i;
	if (id == NULL) return -1;
	if (type == DB_SRP_INDEX) 
	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
		{
		pp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, i);
		if (pp[DB_srptype][0] == DB_SRP_INDEX  && !strcmp(id, pp[DB_srpid])) 
			return i;
		}
	else for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
		{
		pp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, i);

		if (pp[DB_srptype][0] != DB_SRP_INDEX && !strcmp(id,pp[DB_srpid])) 
			return i;
		}

	return -1 ; 
	}

static void print_entry(CA_DB *db, BIO *bio, int indx, int verbose, char *s)
	{
	if (indx >= 0 && verbose)
		{
		int j;
		char **pp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, indx);
		BIO_printf(bio, "%s \"%s\"\n", s, pp[DB_srpid]);
		for (j = 0; j < DB_NUMBER; j++)
			{
			BIO_printf(bio_err,"  %d = \"%s\"\n", j, pp[j]);
			}
		}
	}

static void print_index(CA_DB *db, BIO *bio, int indexindex, int verbose)
	{
	print_entry(db, bio, indexindex, verbose, "g N entry") ;
	}

static void print_user(CA_DB *db, BIO *bio, int userindex, int verbose)
	{
	if (verbose > 0)
		{
		char **pp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, userindex);

		if (pp[DB_srptype][0] != 'I')
			{
			print_entry(db, bio, userindex, verbose, "User entry");
			print_entry(db, bio, get_index(db, pp[DB_srpgN], 'I'), verbose, "g N entry");
			}

		}
	}

static int update_index(CA_DB *db, BIO *bio, char **row)
	{
	char ** irow;
	int i;

	if ((irow=(char **)OPENSSL_malloc(sizeof(char *)*(DB_NUMBER+1))) == NULL)
		{
		BIO_printf(bio_err,"Memory allocation failure\n");
		return 0;
		}

	for (i=0; i<DB_NUMBER; i++)
		{
		irow[i]=row[i];
		row[i]=NULL;
		}
	irow[DB_NUMBER]=NULL;

	if (!TXT_DB_insert(db->db,irow))
		{
		BIO_printf(bio,"failed to update srpvfile\n");
		BIO_printf(bio,"TXT_DB error number %ld\n",db->db->error);
		OPENSSL_free(irow);
		return 0;
		}
	return 1;
	}

static void lookup_fail(const char *name, char *tag)
	{
	BIO_printf(bio_err,"variable lookup failed for %s::%s\n",name,tag);
	}


static char *srp_verify_user(const char *user, const char *srp_verifier,
			     char *srp_usersalt, const char *g, const char *N,
			     const char *passin, BIO *bio, int verbose)
	{
	char password[1024];
	PW_CB_DATA cb_tmp;
	char *verifier = NULL;
	char *gNid = NULL;

	cb_tmp.prompt_info = user;
	cb_tmp.password = passin;

 	if (password_callback(password, 1024, 0, &cb_tmp) >0)
		{
		VERBOSE BIO_printf(bio,"Validating\n   user=\"%s\"\n srp_verifier=\"%s\"\n srp_usersalt=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",user,srp_verifier,srp_usersalt, g, N);
		BIO_printf(bio, "Pass %s\n", password);

		if (!(gNid=SRP_create_verifier(user, password, &srp_usersalt, &verifier, N, g)))
			{
			BIO_printf(bio, "Internal error validating SRP verifier\n");
			}
		else
			{
			if (strcmp(verifier, srp_verifier))
				gNid = NULL;
			OPENSSL_free(verifier);
			}
		}
	return gNid;
	}

static char *srp_create_user(char *user, char **srp_verifier,
			     char **srp_usersalt, char *g, char *N,
			     char *passout, BIO *bio, int verbose)
	{
 	char password[1024];
        PW_CB_DATA cb_tmp;
	char *gNid = NULL;
	char *salt = NULL;
        cb_tmp.prompt_info = user;
        cb_tmp.password = passout;

	if (password_callback(password,1024,1,&cb_tmp) >0)
		{
		VERBOSE BIO_printf(bio,"Creating\n user=\"%s\"\n g=\"%s\"\n N=\"%s\"\n",user,g,N);
		if (!(gNid =SRP_create_verifier(user, password, &salt, srp_verifier, N, g)))
			{
			BIO_printf(bio,"Internal error creating SRP verifier\n");
			}
		else 
			*srp_usersalt = salt;
		VVERBOSE BIO_printf(bio,"gNid=%s salt =\"%s\"\n verifier =\"%s\"\n", gNid,salt, *srp_verifier);

		}
	return gNid;
	}

int MAIN(int argc, char **argv)
	{
	int add_user = 0;
	int list_user= 0;
	int delete_user= 0;
	int modify_user= 0;
	char * user = NULL;

	char *passargin = NULL, *passargout = NULL;
	char *passin = NULL, *passout = NULL;
        char * gN = NULL;
	int gNindex = -1;
	char ** gNrow = NULL;
	int maxgN = -1;

	char * userinfo = NULL;

	int badops=0;
	int ret=1;
	int errors=0;
	int verbose=0;
	int doupdatedb=0;
	char *configfile=NULL;
	char *dbfile=NULL;
	CA_DB *db=NULL;
	char **pp ;
	int i;
	long errorline = -1;
	char *randfile=NULL;
#ifndef OPENSSL_NO_ENGINE
	char *engine = NULL;
#endif
	char *tofree=NULL;
	DB_ATTR db_attr;

#ifdef EFENCE
EF_PROTECT_FREE=1;
EF_PROTECT_BELOW=1;
EF_ALIGNMENT=0;
#endif

	apps_startup();

	conf = NULL;
	section = NULL;

	if (bio_err == NULL)
		if ((bio_err=BIO_new(BIO_s_file())) != NULL)
			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);

	argc--;
	argv++;
	while (argc >= 1 && badops == 0)
		{
		if	(strcmp(*argv,"-verbose") == 0)
			verbose++;
		else if	(strcmp(*argv,"-config") == 0)
			{
			if (--argc < 1) goto bad;
			configfile= *(++argv);
			}
		else if (strcmp(*argv,"-name") == 0)
			{
			if (--argc < 1) goto bad;
			section= *(++argv);
			}
		else if	(strcmp(*argv,"-srpvfile") == 0)
			{
			if (--argc < 1) goto bad;
			dbfile= *(++argv);
			}
		else if (strcmp(*argv,"-add") == 0)
			add_user=1;
		else if (strcmp(*argv,"-delete") == 0)
			delete_user=1;
		else if (strcmp(*argv,"-modify") == 0)
			modify_user=1;
		else if (strcmp(*argv,"-list") == 0)
			list_user=1;
		else if (strcmp(*argv,"-gn") == 0)
			{
			if (--argc < 1) goto bad;
			gN= *(++argv);
			}
		else if (strcmp(*argv,"-userinfo") == 0)
			{
			if (--argc < 1) goto bad;
			userinfo= *(++argv);
			}
		else if (strcmp(*argv,"-passin") == 0)
			{
			if (--argc < 1) goto bad;
			passargin= *(++argv);
			}
		else if (strcmp(*argv,"-passout") == 0)
			{
			if (--argc < 1) goto bad;
			passargout= *(++argv);
			}
#ifndef OPENSSL_NO_ENGINE
		else if (strcmp(*argv,"-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine= *(++argv);
			}
#endif

		else if (**argv == '-')
			{
bad:
			BIO_printf(bio_err,"unknown option %s\n",*argv);
			badops=1;
			break;
			}
		else 
			break;
	
		argc--;
		argv++;
		}

	if (dbfile && configfile)
		{
		BIO_printf(bio_err,"-dbfile and -configfile cannot be specified together.\n");
		badops = 1;
		}
	if (add_user+delete_user+modify_user+list_user != 1)
		{
		BIO_printf(bio_err,"Exactly one of the options -add, -delete, -modify -list must be specified.\n");
		badops = 1;
		}
	if (delete_user+modify_user+delete_user== 1 && argc <= 0)
		{
		BIO_printf(bio_err,"Need at least one user for options -add, -delete, -modify. \n");
		badops = 1;
		}
	if ((passin || passout) && argc != 1 )
		{
		BIO_printf(bio_err,"-passin, -passout arguments only valid with one user.\n");
		badops = 1;
		}

	if (badops)
		{
		for (pp=srp_usage; (*pp != NULL); pp++)
			BIO_printf(bio_err,"%s",*pp);

		BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
		BIO_printf(bio_err,"                 load the file (or the files in the directory) into\n");
		BIO_printf(bio_err,"                 the random number generator\n");
		goto err;
		}

	ERR_load_crypto_strings();

#ifndef OPENSSL_NO_ENGINE
	setup_engine(bio_err, engine, 0);
#endif

	if(!app_passwd(bio_err, passargin, passargout, &passin, &passout))
		{
		BIO_printf(bio_err, "Error getting passwords\n");
		goto err;
		}

        if (!dbfile)
		{


	/*****************************************************************/
		tofree=NULL;
		if (configfile == NULL) configfile = getenv("OPENSSL_CONF");
		if (configfile == NULL) configfile = getenv("SSLEAY_CONF");
		if (configfile == NULL)
			{
			const char *s=X509_get_default_cert_area();
			size_t len;

#ifdef OPENSSL_SYS_VMS
			len = strlen(s)+sizeof(CONFIG_FILE);
			tofree=OPENSSL_malloc(len);
			strcpy(tofree,s);
#else
			len = strlen(s)+sizeof(CONFIG_FILE)+1;
			tofree=OPENSSL_malloc(len);
			BUF_strlcpy(tofree,s,len);
			BUF_strlcat(tofree,"/",len);
#endif
			BUF_strlcat(tofree,CONFIG_FILE,len);
			configfile=tofree;
			}

		VERBOSE BIO_printf(bio_err,"Using configuration from %s\n",configfile);
		conf = NCONF_new(NULL);
		if (NCONF_load(conf,configfile,&errorline) <= 0)
			{
			if (errorline <= 0)
				BIO_printf(bio_err,"error loading the config file '%s'\n",
					configfile);
			else
				BIO_printf(bio_err,"error on line %ld of config file '%s'\n"
					,errorline,configfile);
			goto err;
			}
		if(tofree)
			{
			OPENSSL_free(tofree);
			tofree = NULL;
			}

		if (!load_config(bio_err, conf))
			goto err;

	/* Lets get the config section we are using */
		if (section == NULL)
			{
			VERBOSE BIO_printf(bio_err,"trying to read " ENV_DEFAULT_SRP " in \" BASE_SECTION \"\n");

			section=NCONF_get_string(conf,BASE_SECTION,ENV_DEFAULT_SRP);
			if (section == NULL)
				{
				lookup_fail(BASE_SECTION,ENV_DEFAULT_SRP);
				goto err;
				}
			}
         
		if (randfile == NULL && conf)
	        	randfile = NCONF_get_string(conf, BASE_SECTION, "RANDFILE");

	
		VERBOSE BIO_printf(bio_err,"trying to read " ENV_DATABASE " in section \"%s\"\n",section);

		if ((dbfile=NCONF_get_string(conf,section,ENV_DATABASE)) == NULL)
			{
			lookup_fail(section,ENV_DATABASE);
			goto err;
			}

        	}
	if (randfile == NULL)
		ERR_clear_error();
       	else 
		app_RAND_load_file(randfile, bio_err, 0);

	VERBOSE BIO_printf(bio_err,"Trying to read SRP verifier file \"%s\"\n",dbfile);

	db = load_index(dbfile, &db_attr);
	if (db == NULL) goto err;

	/* Lets check some fields */
	for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
		{
		pp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, i);
	
		if (pp[DB_srptype][0] == DB_SRP_INDEX)
			{
			maxgN = i;
			if (gNindex < 0 && gN != NULL && !strcmp(gN, pp[DB_srpid]))
				gNindex = i;

			print_index(db, bio_err, i, verbose > 1);
			}
		}
	
	VERBOSE BIO_printf(bio_err, "Database initialised\n");

	if (gNindex >= 0)
		{
		gNrow = (char **)sk_OPENSSL_PSTRING_value(db->db->data, gNindex);
		print_entry(db, bio_err, gNindex, verbose > 1, "Default g and N") ;
		}
	else if (maxgN > 0 && !SRP_get_default_gN(gN))
		{
		BIO_printf(bio_err, "No g and N value for index \"%s\"\n", gN);
		goto err;
		}
	else
		{
		VERBOSE BIO_printf(bio_err, "Database has no g N information.\n");
		gNrow = NULL;
		}
	

	VVERBOSE BIO_printf(bio_err,"Starting user processing\n");

	if (argc > 0)
		user = *(argv++) ;

	while (list_user || user)
		{
		int userindex = -1;
		if (user) 
			VVERBOSE BIO_printf(bio_err, "Processing user \"%s\"\n", user);
		if ((userindex = get_index(db, user, 'U')) >= 0)
			{
			print_user(db, bio_err, userindex, (verbose > 0) || list_user);
			}
		
		if (list_user)
			{
			if (user == NULL)
				{
				BIO_printf(bio_err,"List all users\n");

				for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
					{
					print_user(db,bio_err, i, 1);
					}
				list_user = 0;
				}
			else if (userindex < 0)
				{
				BIO_printf(bio_err, "user \"%s\" does not exist, ignored. t\n",
					   user);
				errors++;
				}
			}
		else if (add_user)
			{
			if (userindex >= 0)
				{
				/* reactivation of a new user */
				char **row = (char **)sk_OPENSSL_PSTRING_value(db->db->data, userindex);
				BIO_printf(bio_err, "user \"%s\" reactivated.\n", user);
				row[DB_srptype][0] = 'V';

				doupdatedb = 1;
				}
			else
				{
				char *row[DB_NUMBER] ; char *gNid;
				row[DB_srpverifier] = NULL;
				row[DB_srpsalt] = NULL;
				row[DB_srpinfo] = NULL;
				if (!(gNid = srp_create_user(user,&(row[DB_srpverifier]), &(row[DB_srpsalt]),gNrow?gNrow[DB_srpsalt]:gN,gNrow?gNrow[DB_srpverifier]:NULL, passout, bio_err,verbose)))
					{
						BIO_printf(bio_err, "Cannot create srp verifier for user \"%s\", operation abandoned .\n", user);
						errors++;
						goto err;
					}
				row[DB_srpid] = BUF_strdup(user);
				row[DB_srptype] = BUF_strdup("v");
				row[DB_srpgN] = BUF_strdup(gNid);

				if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype] || !row[DB_srpverifier] || !row[DB_srpsalt] ||
					(userinfo && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))) || 
					!update_index(db, bio_err, row))
					{
					if (row[DB_srpid]) OPENSSL_free(row[DB_srpid]);
					if (row[DB_srpgN]) OPENSSL_free(row[DB_srpgN]);
					if (row[DB_srpinfo]) OPENSSL_free(row[DB_srpinfo]);
					if (row[DB_srptype]) OPENSSL_free(row[DB_srptype]);
					if (row[DB_srpverifier]) OPENSSL_free(row[DB_srpverifier]);
					if (row[DB_srpsalt]) OPENSSL_free(row[DB_srpsalt]);
					goto err;
					}
				doupdatedb = 1;
				}
			}
		else if (modify_user)
			{
			if (userindex < 0)
				{
				BIO_printf(bio_err,"user \"%s\" does not exist, operation ignored.\n",user);
				errors++;
				}
			else
				{

				char **row = (char **)sk_OPENSSL_PSTRING_value(db->db->data, userindex);
				char type = row[DB_srptype][0];
				if (type == 'v')
					{
					BIO_printf(bio_err,"user \"%s\" already updated, operation ignored.\n",user);
					errors++;
					}
				else
					{
					char *gNid;

					if (row[DB_srptype][0] == 'V')
						{
						int user_gN;
						char **irow = NULL;
						VERBOSE BIO_printf(bio_err,"Verifying password for user \"%s\"\n",user);
						if ( (user_gN = get_index(db, row[DB_srpgN], DB_SRP_INDEX)) >= 0)
							irow = (char **)sk_OPENSSL_PSTRING_value(db->db->data, userindex);

 						if (!srp_verify_user(user, row[DB_srpverifier], row[DB_srpsalt], irow ? irow[DB_srpsalt] : row[DB_srpgN], irow ? irow[DB_srpverifier] : NULL, passin, bio_err, verbose))
							{
							BIO_printf(bio_err, "Invalid password for user \"%s\", operation abandoned.\n", user);
							errors++;
							goto err;
							}
						} 
					VERBOSE BIO_printf(bio_err,"Password for user \"%s\" ok.\n",user);

					if (!(gNid=srp_create_user(user,&(row[DB_srpverifier]), &(row[DB_srpsalt]),gNrow?gNrow[DB_srpsalt]:NULL, gNrow?gNrow[DB_srpverifier]:NULL, passout, bio_err,verbose)))
						{
							BIO_printf(bio_err, "Cannot create srp verifier for user \"%s\", operation abandoned.\n", user);
							errors++;
							goto err;
						}

					row[DB_srptype][0] = 'v';
					row[DB_srpgN] = BUF_strdup(gNid);
 
					if (!row[DB_srpid] || !row[DB_srpgN] || !row[DB_srptype] || !row[DB_srpverifier] || !row[DB_srpsalt] ||
						(userinfo && (!(row[DB_srpinfo] = BUF_strdup(userinfo)))))  
						goto err;

					doupdatedb = 1;
					}
				}
			}
		else if (delete_user)
			{
			if (userindex < 0)
				{
				BIO_printf(bio_err, "user \"%s\" does not exist, operation ignored. t\n", user);
				errors++;
				}
			else
				{
				char **xpp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, userindex);
				BIO_printf(bio_err, "user \"%s\" revoked. t\n", user);

				xpp[DB_srptype][0] = 'R';
				
				doupdatedb = 1;
				}
			}
		if (--argc > 0)
			user = *(argv++) ;
		else
			{
			user = NULL;
			list_user = 0;
			}
		}

	VERBOSE BIO_printf(bio_err,"User procession done.\n");


	if (doupdatedb)
		{
		/* Lets check some fields */
		for (i = 0; i < sk_OPENSSL_PSTRING_num(db->db->data); i++)
			{
			pp = (char **)sk_OPENSSL_PSTRING_value(db->db->data, i);
	
			if (pp[DB_srptype][0] == 'v')
				{
				pp[DB_srptype][0] = 'V';
				print_user(db, bio_err, i, verbose);
				}
			}

		VERBOSE BIO_printf(bio_err, "Trying to update srpvfile.\n");
		if (!save_index(dbfile, "new", db)) goto err;
				
		VERBOSE BIO_printf(bio_err, "Temporary srpvfile created.\n");
		if (!rotate_index(dbfile, "new", "old")) goto err;

		VERBOSE BIO_printf(bio_err, "srpvfile updated.\n");
		}

	ret = (errors != 0);
err:
	if (errors != 0)
	VERBOSE BIO_printf(bio_err,"User errors %d.\n",errors);

	VERBOSE BIO_printf(bio_err,"SRP terminating with code %d.\n",ret);
	if(tofree)
		OPENSSL_free(tofree);
	if (ret) ERR_print_errors(bio_err);
	if (randfile) app_RAND_write_file(randfile, bio_err);
	if (conf) NCONF_free(conf);
	if (db) free_index(db);

	OBJ_cleanup();
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}



#endif