/* crypto/x509/by_dir.c */

 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

  * All rights reserved.

  *

  * This package is an SSL implementation written

  * by Eric Young (eay@cryptsoft.com).

  * The implementation was written so as to conform with Netscapes SSL.

  * 

  * This library is free for commercial and non-commercial use as long as

  * the following conditions are aheared to.  The following conditions

  * apply to all code found in this distribution, be it the RC4, RSA,

  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

  * included with this distribution is covered by the same copyright terms

  * except that the holder is Tim Hudson (tjh@cryptsoft.com).

  * 

  * Copyright remains Eric Young's, and as such any Copyright notices in

  * the code are not to be removed.

  * If this package is used in a product, Eric Young should be given attribution

  * as the author of the parts of the library used.

  * This can be in the form of a textual message at program startup or

  * in documentation (online or textual) provided with the package.

  * 

  * 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 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 acknowledgement:

  *    "This product includes cryptographic software written by

  *     Eric Young (eay@cryptsoft.com)"

  *    The word 'cryptographic' can be left out if the rouines from the library

  *    being used are not cryptographic related :-).

  * 4. If you include any Windows specific code (or a derivative thereof) from 

  *    the apps directory (application code) you must include an acknowledgement:

  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

  * 

  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

  * ANY EXPRESS 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 AUTHOR OR 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.

  * 

  * The licence and distribution terms for any publically available version or

  * derivative of this code cannot be changed.  i.e. this code cannot simply be

  * copied and put under another distribution licence

  * [including the GNU Public Licence.]

  */

  /*

  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

  */

 #include <stdio.h>

 #include <time.h>

 #include <errno.h>

 #include "cryptlib.h"

 #ifndef NO_SYS_TYPES_H

 # include <sys/types.h>

 #endif

 #ifdef MAC_OS_pre_X

 # include <stat.h>

 #else

 # include <sys/stat.h>

 #endif

 #include <openssl/lhash.h>

 #include <openssl/x509.h>

 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 typedef struct lookup_dir_st

 	{

 	BUF_MEM *buffer;

 	int num_dirs;

 	char **dirs;

 	int *dirs_type;

 	int num_dirs_alloced;

 	} BY_DIR;

 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,

 	char **ret);

 static int new_dir(X509_LOOKUP *lu);

 static void free_dir(X509_LOOKUP *lu);

 static int add_cert_dir(BY_DIR *ctx,const char *dir,int type);

 static int get_cert_by_subject(X509_LOOKUP *xl,int type,X509_NAME *name,

 	X509_OBJECT *ret);

 #ifndef EMULATOR	

 X509_LOOKUP_METHOD x509_dir_lookup=

 	{

 	"Load certs from files in a directory",

 	new_dir,		/* new */

 	free_dir,		/* free */

 	NULL, 			/* init */

 	NULL,			/* shutdown */

 	dir_ctrl,		/* ctrl */

 	get_cert_by_subject,	/* get_by_subject */

 	NULL,			/* get_by_issuer_serial */

 	NULL,			/* get_by_fingerprint */

 	NULL,			/* get_by_alias */

 	};

 #else

 GET_GLOBAL_VAR_FROM_TLS(x509_dir_lookup,by_dir,X509_LOOKUP_METHOD)

 #define x509_dir_lookup (*GET_WSD_VAR_NAME(x509_dir_lookup,by_dir, g)())

 const X509_LOOKUP_METHOD temp_g_x509_dir_lookup=

 	{

 	"Load certs from files in a directory",

 	new_dir,		/* new */

 	free_dir,		/* free */

 	NULL, 			/* init */

 	NULL,			/* shutdown */

 	dir_ctrl,		/* ctrl */

 	get_cert_by_subject,	/* get_by_subject */

 	NULL,			/* get_by_issuer_serial */

 	NULL,			/* get_by_fingerprint */

 	NULL,			/* get_by_alias */

 	};

 #endif	

 EXPORT_C X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)

 	{

 	return(&x509_dir_lookup);

 	}

 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,

 	     char **retp)

 	{

 	int ret=0;

 	BY_DIR *ld;

 	char *dir = NULL;

 	ld=(BY_DIR *)ctx->method_data;

 	switch (cmd)

 		{

 	case X509_L_ADD_DIR:

 		if (argl == X509_FILETYPE_DEFAULT)

 			{

 			dir=(char *)Getenv(X509_get_default_cert_dir_env());

 			if (dir)

 				ret=add_cert_dir(ld,dir,X509_FILETYPE_PEM);

 			else

 				ret=add_cert_dir(ld,X509_get_default_cert_dir(),

 					X509_FILETYPE_PEM);

 			if (!ret)

 				{

 				X509err(X509_F_DIR_CTRL,X509_R_LOADING_CERT_DIR);

 				}

 			}

 		else

 			ret=add_cert_dir(ld,argp,(int)argl);

 		break;

 		}

 	return(ret);

 	}

 static int new_dir(X509_LOOKUP *lu)

 	{

 	BY_DIR *a;

 	if ((a=(BY_DIR *)OPENSSL_malloc(sizeof(BY_DIR))) == NULL)

 		return(0);

 	if ((a->buffer=BUF_MEM_new()) == NULL)

 		{

 		OPENSSL_free(a);

 		return(0);

 		}

 	a->num_dirs=0;

 	a->dirs=NULL;

 	a->dirs_type=NULL;

 	a->num_dirs_alloced=0;

 	lu->method_data=(char *)a;

 	return(1);

 	}

 static void free_dir(X509_LOOKUP *lu)

 	{

 	BY_DIR *a;

 	int i;

 	a=(BY_DIR *)lu->method_data;

 	for (i=0; i<a->num_dirs; i++)

 		if (a->dirs[i] != NULL) OPENSSL_free(a->dirs[i]);

 	if (a->dirs != NULL) OPENSSL_free(a->dirs);

 	if (a->dirs_type != NULL) OPENSSL_free(a->dirs_type);

 	if (a->buffer != NULL) BUF_MEM_free(a->buffer);

 	OPENSSL_free(a);

 	}

 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)

 	{

 	int j,len;

 	int *ip;

 	const char *s,*ss,*p;

 	char **pp;

 	if (dir == NULL || !*dir)

 	    {

 	    X509err(X509_F_ADD_CERT_DIR,X509_R_INVALID_DIRECTORY);

 	    return 0;

 	    }

 	s=dir;

 	p=s;

 	for (;;p++)

 		{

 		if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0'))

 			{

 			ss=s;

 			s=p+1;

 			len=(int)(p-ss);

 			if (len == 0) continue;

 			for (j=0; j<ctx->num_dirs; j++)

 				if (strlen(ctx->dirs[j]) == (size_t)len &&

 				    strncmp(ctx->dirs[j],ss,(unsigned int)len) == 0)

 					break;

 			if (j<ctx->num_dirs)

 					continue;

 			if (ctx->num_dirs_alloced < (ctx->num_dirs+1))

 				{

 				ctx->num_dirs_alloced+=10;

 				pp=(char **)OPENSSL_malloc(ctx->num_dirs_alloced*

 					sizeof(char *));

 				ip=(int *)OPENSSL_malloc(ctx->num_dirs_alloced*

 					sizeof(int));

 				if ((pp == NULL) || (ip == NULL))

 					{

 					X509err(X509_F_ADD_CERT_DIR,ERR_R_MALLOC_FAILURE);

 					return(0);

 					}

 				memcpy(pp,ctx->dirs,(ctx->num_dirs_alloced-10)*

 					sizeof(char *));

 				memcpy(ip,ctx->dirs_type,(ctx->num_dirs_alloced-10)*

 					sizeof(int));

 				if (ctx->dirs != NULL)

 					OPENSSL_free(ctx->dirs);

 				if (ctx->dirs_type != NULL)

 					OPENSSL_free(ctx->dirs_type);

 				ctx->dirs=pp;

 				ctx->dirs_type=ip;

 				}

 			ctx->dirs_type[ctx->num_dirs]=type;

 			ctx->dirs[ctx->num_dirs]=(char *)OPENSSL_malloc((unsigned int)len+1);

 			if (ctx->dirs[ctx->num_dirs] == NULL) return(0);

 			strncpy(ctx->dirs[ctx->num_dirs],ss,(unsigned int)len);

 			ctx->dirs[ctx->num_dirs][len]='\0';

 			ctx->num_dirs++;

 			}

 		if (*p == '\0') break;

 		}

 	return(1);

 	}

 static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,

 	     X509_OBJECT *ret)

 	{

 	BY_DIR *ctx;

 	union	{

 		struct	{

 			X509 st_x509;

 			X509_CINF st_x509_cinf;

 			} x509;

 		struct	{

 			X509_CRL st_crl;

 			X509_CRL_INFO st_crl_info;

 			} crl;

 		} data;

 	int ok=0;

 	int i,j,k;

 	unsigned long h;

 	BUF_MEM *b=NULL;

 	struct stat st;

 	X509_OBJECT stmp,*tmp;

 	const char *postfix="";

 	if (name == NULL) return(0);

 	stmp.type=type;

 	if (type == X509_LU_X509)

 		{

 		data.x509.st_x509.cert_info= &data.x509.st_x509_cinf;

 		data.x509.st_x509_cinf.subject=name;

 		stmp.data.x509= &data.x509.st_x509;

 		postfix="";

 		}

 	else if (type == X509_LU_CRL)

 		{

 		data.crl.st_crl.crl= &data.crl.st_crl_info;

 		data.crl.st_crl_info.issuer=name;

 		stmp.data.crl= &data.crl.st_crl;

 		postfix="r";

 		}

 	else

 		{

 		X509err(X509_F_GET_CERT_BY_SUBJECT,X509_R_WRONG_LOOKUP_TYPE);

 		goto finish;

 		}

 	if ((b=BUF_MEM_new()) == NULL)

 		{

 		X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_BUF_LIB);

 		goto finish;

 		}

 	ctx=(BY_DIR *)xl->method_data;

 	h=X509_NAME_hash(name);

 	for (i=0; i<ctx->num_dirs; i++)

 		{

 		j=strlen(ctx->dirs[i])+1+8+6+1+1;

 		if (!BUF_MEM_grow(b,j))

 			{

 			X509err(X509_F_GET_CERT_BY_SUBJECT,ERR_R_MALLOC_FAILURE);

 			goto finish;

 			}

 		k=0;

 		for (;;)

 			{

 			char c = '/';

 #ifdef OPENSSL_SYS_VMS

 			c = ctx->dirs[i][strlen(ctx->dirs[i])-1];

 			if (c != ':' && c != '>' && c != ']')

 				{

 				/* If no separator is present, we assume the

 				   directory specifier is a logical name, and

 				   add a colon.  We really should use better

 				   VMS routines for merging things like this,

 				   but this will do for now...

 				   -- Richard Levitte */

 				c = ':';

 				}

 			else

 				{

 				c = '\0';

 				}

 #endif

 			if (c == '\0')

 				{

 				/* This is special.  When c == '\0', no

 				   directory separator should be added. */

 				BIO_snprintf(b->data,b->max,

 					"%s%08lx.%s%d",ctx->dirs[i],h,

 					postfix,k);

 				}

 			else

 				{

 				BIO_snprintf(b->data,b->max,

 					"%s%c%08lx.%s%d",ctx->dirs[i],c,h,

 					postfix,k);

 				}

 			k++;

 			if (stat(b->data,&st) < 0)

 				break;

 			/* found one. */

 			if (type == X509_LU_X509)

 				{

 				if ((X509_load_cert_file(xl,b->data,

 					ctx->dirs_type[i])) == 0)

 					break;

 				}

 			else if (type == X509_LU_CRL)

 				{

 				if ((X509_load_crl_file(xl,b->data,

 					ctx->dirs_type[i])) == 0)

 					break;

 				}

 			/* else case will caught higher up */

 			}

 		/* we have added it to the cache so now pull

 		 * it out again */

 		CRYPTO_r_lock(CRYPTO_LOCK_X509_STORE);

 		j = sk_X509_OBJECT_find(xl->store_ctx->objs,&stmp);

 		if(j != -1) tmp=sk_X509_OBJECT_value(xl->store_ctx->objs,j);

 		else tmp = NULL;

 		CRYPTO_r_unlock(CRYPTO_LOCK_X509_STORE);

 		if (tmp != NULL)

 			{

 			ok=1;

 			ret->type=tmp->type;

 			memcpy(&ret->data,&tmp->data,sizeof(ret->data));

 			/* If we were going to up the reference count,

 			 * we would need to do it on a perl 'type'

 			 * basis */

 	/*		CRYPTO_add(&tmp->data.x509->references,1,

 				CRYPTO_LOCK_X509);*/

 			goto finish;

 			}

 		}

 finish:

 	if (b != NULL) BUF_MEM_free(b);

 	return(ok);

 	}