/* crypto/pem/pem_lib.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.]

  */

 #include <stdio.h>

 #include "cryptlib.h"

 #include <openssl/buffer.h>

 #include <openssl/objects.h>

 #include <openssl/evp.h>

 #include <openssl/rand.h>

 #include <openssl/x509.h>

 #include <openssl/pem.h>

 #include <openssl/pkcs12.h>

 #ifndef OPENSSL_NO_DES

 #include <openssl/des.h>

 #endif

 const char PEM_version[]="PEM" OPENSSL_VERSION_PTEXT;

 #define MIN_LENGTH	4

 static int load_iv(char **fromp,unsigned char *to, int num);

 static int check_pem(const char *nm, const char *name);

 EXPORT_C int PEM_def_callback(char *buf, int num, int w, void *key)

 	{

 #ifdef OPENSSL_NO_FP_API

 	/* We should not ever call the default callback routine from

 	 * windows. */

 	PEMerr(PEM_F_PEM_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);

 	return(-1);

 #else

 	int i,j;

 	const char *prompt;

 	if(key) {

 		i=strlen(key);

 		i=(i > num)?num:i;

 		memcpy(buf,key,i);

 		return(i);

 	}

 	prompt=EVP_get_pw_prompt();

 	if (prompt == NULL)

 		prompt="Enter PEM pass phrase:";

 	for (;;)

 		{

 		i=EVP_read_pw_string(buf,num,prompt,w);

 		if (i != 0)

 			{

 			PEMerr(PEM_F_PEM_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);

 			memset(buf,0,(unsigned int)num);

 			return(-1);

 			}

 		j=strlen(buf);

 		if (j < MIN_LENGTH)

 			{

 			fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH);

 			}

 		else

 			break;

 		}

 	return(j);

 #endif

 	}

 EXPORT_C void PEM_proc_type(char *buf, int type)

 	{

 	const char *str;

 	if (type == PEM_TYPE_ENCRYPTED)

 		str="ENCRYPTED";

 	else if (type == PEM_TYPE_MIC_CLEAR)

 		str="MIC-CLEAR";

 	else if (type == PEM_TYPE_MIC_ONLY)

 		str="MIC-ONLY";

 	else

 		str="BAD-TYPE";

 	BUF_strlcat(buf,"Proc-Type: 4,",PEM_BUFSIZE);

 	BUF_strlcat(buf,str,PEM_BUFSIZE);

 	BUF_strlcat(buf,"\n",PEM_BUFSIZE);

 	}

 EXPORT_C void PEM_dek_info(char *buf, const char *type, int len, char *str)

 	{

 	static const unsigned char map[17]="0123456789ABCDEF";

 	long i;

 	int j;

 	BUF_strlcat(buf,"DEK-Info: ",PEM_BUFSIZE);

 	BUF_strlcat(buf,type,PEM_BUFSIZE);

 	BUF_strlcat(buf,",",PEM_BUFSIZE);

 	j=strlen(buf);

 	if (j + (len * 2) + 1 > PEM_BUFSIZE)

         	return;

 	for (i=0; i<len; i++)

 		{

 		buf[j+i*2]  =map[(str[i]>>4)&0x0f];

 		buf[j+i*2+1]=map[(str[i]   )&0x0f];

 		}

 	buf[j+i*2]='\n';

 	buf[j+i*2+1]='\0';

 	}

 #ifndef OPENSSL_NO_FP_API

 EXPORT_C void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,

 		    pem_password_cb *cb, void *u)

 	{

         BIO *b;

         void *ret;

         if ((b=BIO_new(BIO_s_file())) == NULL)

 		{

 		PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB);

                 return(0);

 		}

         BIO_set_fp(b,fp,BIO_NOCLOSE);

         ret=PEM_ASN1_read_bio(d2i,name,b,x,cb,u);

         BIO_free(b);

         return(ret);

 	}

 #endif

 static int check_pem(const char *nm, const char *name)

 {

 	/* Normal matching nm and name */

 	if (!strcmp(nm,name)) return 1;

 	/* Make PEM_STRING_EVP_PKEY match any private key */

 	if(!strcmp(nm,PEM_STRING_PKCS8) &&

 		!strcmp(name,PEM_STRING_EVP_PKEY)) return 1;

 	if(!strcmp(nm,PEM_STRING_PKCS8INF) &&

 		 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;

 	if(!strcmp(nm,PEM_STRING_RSA) &&

 		!strcmp(name,PEM_STRING_EVP_PKEY)) return 1;

 	if(!strcmp(nm,PEM_STRING_DSA) &&

 		 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;

  	if(!strcmp(nm,PEM_STRING_ECPRIVATEKEY) &&

  		 !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;

 	/* Permit older strings */

 	if(!strcmp(nm,PEM_STRING_X509_OLD) &&

 		!strcmp(name,PEM_STRING_X509)) return 1;

 	if(!strcmp(nm,PEM_STRING_X509_REQ_OLD) &&

 		!strcmp(name,PEM_STRING_X509_REQ)) return 1;

 	/* Allow normal certs to be read as trusted certs */

 	if(!strcmp(nm,PEM_STRING_X509) &&

 		!strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;

 	if(!strcmp(nm,PEM_STRING_X509_OLD) &&

 		!strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;

 	/* Some CAs use PKCS#7 with CERTIFICATE headers */

 	if(!strcmp(nm, PEM_STRING_X509) &&

 		!strcmp(name, PEM_STRING_PKCS7)) return 1;

 	return 0;

 }

 EXPORT_C int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp,

 	     pem_password_cb *cb, void *u)

 	{

 	EVP_CIPHER_INFO cipher;

 	char *nm=NULL,*header=NULL;

 	unsigned char *data=NULL;

 	long len;

 	int ret = 0;

 	for (;;)

 		{

 		if (!PEM_read_bio(bp,&nm,&header,&data,&len)) {

 			if(ERR_GET_REASON(ERR_peek_error()) ==

 				PEM_R_NO_START_LINE)

 				ERR_add_error_data(2, "Expecting: ", name);

 			return 0;

 		}

 		if(check_pem(nm, name)) break;

 		OPENSSL_free(nm);

 		OPENSSL_free(header);

 		OPENSSL_free(data);

 		}

 	if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err;

 	if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err;

 	*pdata = data;

 	*plen = len;

 	if (pnm)

 		*pnm = nm;

 	ret = 1;

 err:

 	if (!ret || !pnm) OPENSSL_free(nm);

 	OPENSSL_free(header);

 	if (!ret) OPENSSL_free(data);

 	return ret;

 	}

 #ifndef OPENSSL_NO_FP_API

 EXPORT_C int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,

 		   char *x, const EVP_CIPHER *enc, unsigned char *kstr,

 		   int klen, pem_password_cb *callback, void *u)

         {

         BIO *b;

         int ret;

         if ((b=BIO_new(BIO_s_file())) == NULL)

 		{

 		PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB);

                 return(0);

 		}

         BIO_set_fp(b,fp,BIO_NOCLOSE);

         ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback,u);

         BIO_free(b);

         return(ret);

         }

 #endif

 EXPORT_C int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,

 		       char *x, const EVP_CIPHER *enc, unsigned char *kstr,

 		       int klen, pem_password_cb *callback, void *u)

 	{

 	EVP_CIPHER_CTX ctx;

 	int dsize=0,i,j,ret=0;

 	unsigned char *p,*data=NULL;

 	const char *objstr=NULL;

 	char buf[PEM_BUFSIZE];

 	unsigned char key[EVP_MAX_KEY_LENGTH];

 	unsigned char iv[EVP_MAX_IV_LENGTH];

 	if (enc != NULL)

 		{

 		objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));

 		if (objstr == NULL)

 			{

 			PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);

 			goto err;

 			}

 		}

 	if ((dsize=i2d(x,NULL)) < 0)

 		{

 		PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_ASN1_LIB);

 		dsize=0;

 		goto err;

 		}

 	/* dzise + 8 bytes are needed */

 	/* actually it needs the cipher block size extra... */

 	data=(unsigned char *)OPENSSL_malloc((unsigned int)dsize+20);

 	if (data == NULL)

 		{

 		PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);

 		goto err;

 		}

 	p=data;

 	i=i2d(x,&p);

 	if (enc != NULL)

 		{

 		if (kstr == NULL)

 			{

 			if (callback == NULL)

 				klen=PEM_def_callback(buf,PEM_BUFSIZE,1,u);

 			else

 				klen=(*callback)(buf,PEM_BUFSIZE,1,u);

 			if (klen <= 0)

 				{

 				PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY);

 				goto err;

 				}

 #ifdef CHARSET_EBCDIC

 			/* Convert the pass phrase from EBCDIC */

 			ebcdic2ascii(buf, buf, klen);

 #endif

 			kstr=(unsigned char *)buf;

 			}

 		RAND_add(data,i,0);/* put in the RSA key. */

 		OPENSSL_assert(enc->iv_len <= (int)sizeof(iv));

 		if (RAND_pseudo_bytes(iv,enc->iv_len) < 0) /* Generate a salt */

 			goto err;

 		/* The 'iv' is used as the iv and as a salt.  It is

 		 * NOT taken from the BytesToKey function */

 		EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL);

 		if (kstr == (unsigned char *)buf) OPENSSL_cleanse(buf,PEM_BUFSIZE);

 		OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf);

 		buf[0]='\0';

 		PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);

 		PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv);

 		/* k=strlen(buf); */

 		EVP_CIPHER_CTX_init(&ctx);

 		EVP_EncryptInit_ex(&ctx,enc,NULL,key,iv);

 		EVP_EncryptUpdate(&ctx,data,&j,data,i);

 		EVP_EncryptFinal_ex(&ctx,&(data[j]),&i);

 		EVP_CIPHER_CTX_cleanup(&ctx);

 		i+=j;

 		ret=1;

 		}

 	else

 		{

 		ret=1;

 		buf[0]='\0';

 		}

 	i=PEM_write_bio(bp,name,buf,data,i);

 	if (i <= 0) ret=0;

 err:

 	OPENSSL_cleanse(key,sizeof(key));

 	OPENSSL_cleanse(iv,sizeof(iv));

 	OPENSSL_cleanse((char *)&ctx,sizeof(ctx));

 	OPENSSL_cleanse(buf,PEM_BUFSIZE);

 	if (data != NULL)

 		{

 		OPENSSL_cleanse(data,(unsigned int)dsize);

 		OPENSSL_free(data);

 		}

 	return(ret);

 	}

 EXPORT_C int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,

 	     pem_password_cb *callback,void *u)

 	{

 	int i,j,o,klen;

 	long len;

 	EVP_CIPHER_CTX ctx;

 	unsigned char key[EVP_MAX_KEY_LENGTH];

 	char buf[PEM_BUFSIZE];

 	len= *plen;

 	if (cipher->cipher == NULL) return(1);

 	if (callback == NULL)

 		klen=PEM_def_callback(buf,PEM_BUFSIZE,0,u);

 	else

 		klen=callback(buf,PEM_BUFSIZE,0,u);

 	if (klen <= 0)

 		{

 		PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ);

 		return(0);

 		}

 #ifdef CHARSET_EBCDIC

 	/* Convert the pass phrase from EBCDIC */

 	ebcdic2ascii(buf, buf, klen);

 #endif

 	EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]),

 		(unsigned char *)buf,klen,1,key,NULL);

 	j=(int)len;

 	EVP_CIPHER_CTX_init(&ctx);

 	EVP_DecryptInit_ex(&ctx,cipher->cipher,NULL, key,&(cipher->iv[0]));

 	EVP_DecryptUpdate(&ctx,data,&i,data,j);

 	o=EVP_DecryptFinal_ex(&ctx,&(data[i]),&j);

 	EVP_CIPHER_CTX_cleanup(&ctx);

 	OPENSSL_cleanse((char *)buf,sizeof(buf));

 	OPENSSL_cleanse((char *)key,sizeof(key));

 	j+=i;

 	if (!o)

 		{

 		PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT);

 		return(0);

 		}

 	*plen=j;

 	return(1);

 	}

 EXPORT_C int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)

 	{

 	int o;

 	const EVP_CIPHER *enc=NULL;

 	char *p,c;

 	char **header_pp = &header;

 	cipher->cipher=NULL;

 	if ((header == NULL) || (*header == '\0') || (*header == '\n'))

 		return(1);

 	if (strncmp(header,"Proc-Type: ",11) != 0)

 		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); }

 	header+=11;

 	if (*header != '4') return(0); header++;

 	if (*header != ',') return(0); header++;

 	if (strncmp(header,"ENCRYPTED",9) != 0)

 		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); }

 	for (; (*header != '\n') && (*header != '\0'); header++)

 		;

 	if (*header == '\0')

 		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); }

 	header++;

 	if (strncmp(header,"DEK-Info: ",10) != 0)

 		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); }

 	header+=10;

 	p=header;

 	for (;;)

 		{

 		c= *header;

 #ifndef CHARSET_EBCDIC

 		if (!(	((c >= 'A') && (c <= 'Z')) || (c == '-') ||

 			((c >= '0') && (c <= '9'))))

 			break;

 #else

 		if (!(	isupper(c) || (c == '-') ||

 			isdigit(c)))

 			break;

 #endif

 		header++;

 		}

 	*header='\0';

 	o=OBJ_sn2nid(p);

 	cipher->cipher=enc=EVP_get_cipherbyname(p);

 	*header=c;

 	header++;

 	if (enc == NULL)

 		{

 		PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION);

 		return(0);

 		}

 	if (!load_iv(header_pp,&(cipher->iv[0]),enc->iv_len))

 		return(0);

 	return(1);

 	}

 static int load_iv(char **fromp, unsigned char *to, int num)

 	{

 	int v,i;

 	char *from;

 	from= *fromp;

 	for (i=0; i<num; i++) to[i]=0;

 	num*=2;

 	for (i=0; i<num; i++)

 		{

 		if ((*from >= '0') && (*from <= '9'))

 			v= *from-'0';

 		else if ((*from >= 'A') && (*from <= 'F'))

 			v= *from-'A'+10;

 		else if ((*from >= 'a') && (*from <= 'f'))

 			v= *from-'a'+10;

 		else

 			{

 			PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS);

 			return(0);

 			}

 		from++;

 		to[i/2]|=v<<(long)((!(i&1))*4);

 		}

 	*fromp=from;

 	return(1);

 	}

 #ifndef OPENSSL_NO_FP_API

 EXPORT_C int PEM_write(FILE *fp, char *name, char *header, unsigned char *data,

 	     long len)

         {

         BIO *b;

         int ret;

         if ((b=BIO_new(BIO_s_file())) == NULL)

 		{

 		PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB);

                 return(0);

 		}

         BIO_set_fp(b,fp,BIO_NOCLOSE);

         ret=PEM_write_bio(b, name, header, data,len);

         BIO_free(b);

         return(ret);

         }

 #endif

 EXPORT_C int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,

 	     long len)

 	{

 	int nlen,n,i,j,outl;

 	unsigned char *buf = NULL;

 	EVP_ENCODE_CTX ctx;

 	int reason=ERR_R_BUF_LIB;

 	EVP_EncodeInit(&ctx);

 	nlen=strlen(name);

 	if (	(BIO_write(bp,"-----BEGIN ",11) != 11) ||

 		(BIO_write(bp,name,nlen) != nlen) ||

 		(BIO_write(bp,"-----\n",6) != 6))

 		goto err;

 	i=strlen(header);

 	if (i > 0)

 		{

 		if (	(BIO_write(bp,header,i) != i) ||

 			(BIO_write(bp,"\n",1) != 1))

 			goto err;

 		}

 	buf = OPENSSL_malloc(PEM_BUFSIZE*8);

 	if (buf == NULL)

 		{

 		reason=ERR_R_MALLOC_FAILURE;

 		goto err;

 		}

 	i=j=0;

 	while (len > 0)

 		{

 		n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len);

 		EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n);

 		if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl))

 			goto err;

 		i+=outl;

 		len-=n;

 		j+=n;

 		}

 	EVP_EncodeFinal(&ctx,buf,&outl);

 	if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;

 	OPENSSL_cleanse(buf, PEM_BUFSIZE*8);

 	OPENSSL_free(buf);

 	buf = NULL;

 	if (	(BIO_write(bp,"-----END ",9) != 9) ||

 		(BIO_write(bp,name,nlen) != nlen) ||

 		(BIO_write(bp,"-----\n",6) != 6))

 		goto err;

 	return(i+outl);

 err:

 	if (buf) {

 		OPENSSL_cleanse(buf, PEM_BUFSIZE*8);

 		OPENSSL_free(buf);

 	}

 	PEMerr(PEM_F_PEM_WRITE_BIO,reason);

 	return(0);

 	}

 #ifndef OPENSSL_NO_FP_API

 EXPORT_C int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,

 	     long *len)

         {

         BIO *b;

         int ret;

         if ((b=BIO_new(BIO_s_file())) == NULL)

 		{

 		PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB);

                 return(0);

 		}

         BIO_set_fp(b,fp,BIO_NOCLOSE);

         ret=PEM_read_bio(b, name, header, data,len);

         BIO_free(b);

         return(ret);

         }

 #endif

 EXPORT_C int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,

 	     long *len)

 	{

 	EVP_ENCODE_CTX ctx;

 	int end=0,i,k,bl=0,hl=0,nohead=0;

 	char buf[256];

 	BUF_MEM *nameB;

 	BUF_MEM *headerB;

 	BUF_MEM *dataB,*tmpB;

 	nameB=BUF_MEM_new();

 	headerB=BUF_MEM_new();

 	dataB=BUF_MEM_new();

 	if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL))

 		{

 		BUF_MEM_free(nameB);

 		BUF_MEM_free(headerB);

 		BUF_MEM_free(dataB);

 		PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);

 		return(0);

 		}

 	buf[254]='\0';

 	for (;;)

 		{

 		i=BIO_gets(bp,buf,254);

 		if (i <= 0)

 			{

 			PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE);

 			goto err;

 			}

 		while ((i >= 0) && (buf[i] <= ' ')) i--;

 		buf[++i]='\n'; buf[++i]='\0';

 		if (strncmp(buf,"-----BEGIN ",11) == 0)

 			{

 			i=strlen(&(buf[11]));

 			if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0)

 				continue;

 			if (!BUF_MEM_grow(nameB,i+9))

 				{

 				PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);

 				goto err;

 				}

 			memcpy(nameB->data,&(buf[11]),i-6);

 			nameB->data[i-6]='\0';

 			break;

 			}

 		}

 	hl=0;

 	if (!BUF_MEM_grow(headerB,256))

 		{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }

 	headerB->data[0]='\0';

 	for (;;)

 		{

 		i=BIO_gets(bp,buf,254);

 		if (i <= 0) break;

 		while ((i >= 0) && (buf[i] <= ' ')) i--;

 		buf[++i]='\n'; buf[++i]='\0';

 		if (buf[0] == '\n') break;

 		if (!BUF_MEM_grow(headerB,hl+i+9))

 			{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }

 		if (strncmp(buf,"-----END ",9) == 0)

 			{

 			nohead=1;

 			break;

 			}

 		memcpy(&(headerB->data[hl]),buf,i);

 		headerB->data[hl+i]='\0';

 		hl+=i;

 		}

 	bl=0;

 	if (!BUF_MEM_grow(dataB,1024))

 		{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }

 	dataB->data[0]='\0';

 	if (!nohead)

 		{

 		for (;;)

 			{

 			i=BIO_gets(bp,buf,254);

 			if (i <= 0) break;

 			while ((i >= 0) && (buf[i] <= ' ')) i--;

 			buf[++i]='\n'; buf[++i]='\0';

 			if (i != 65) end=1;

 			if (strncmp(buf,"-----END ",9) == 0)

 				break;

 			if (i > 65) break;

 			if (!BUF_MEM_grow_clean(dataB,i+bl+9))

 				{

 				PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);

 				goto err;

 				}

 			memcpy(&(dataB->data[bl]),buf,i);

 			dataB->data[bl+i]='\0';

 			bl+=i;

 			if (end)

 				{

 				buf[0]='\0';

 				i=BIO_gets(bp,buf,254);

 				if (i <= 0) break;

 				while ((i >= 0) && (buf[i] <= ' ')) i--;

 				buf[++i]='\n'; buf[++i]='\0';

 				break;

 				}

 			}

 		}

 	else

 		{

 		tmpB=headerB;

 		headerB=dataB;

 		dataB=tmpB;

 		bl=hl;

 		}

 	i=strlen(nameB->data);

 	if (	(strncmp(buf,"-----END ",9) != 0) ||

 		(strncmp(nameB->data,&(buf[9]),i) != 0) ||

 		(strncmp(&(buf[9+i]),"-----\n",6) != 0))

 		{

 		PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE);

 		goto err;

 		}

 	EVP_DecodeInit(&ctx);

 	i=EVP_DecodeUpdate(&ctx,

 		(unsigned char *)dataB->data,&bl,

 		(unsigned char *)dataB->data,bl);

 	if (i < 0)

 		{

 		PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);

 		goto err;

 		}

 	i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k);

 	if (i < 0)

 		{

 		PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);

 		goto err;

 		}

 	bl+=k;

 	if (bl == 0) goto err;

 	*name=nameB->data;

 	*header=headerB->data;

 	*data=(unsigned char *)dataB->data;

 	*len=bl;

 	OPENSSL_free(nameB);

 	OPENSSL_free(headerB);

 	OPENSSL_free(dataB);

 	return(1);

 err:

 	BUF_MEM_free(nameB);

 	BUF_MEM_free(headerB);

 	BUF_MEM_free(dataB);

 	return(0);

 	}