Initial import

1 files changed, 445 insertions, 0 deletions

diff --git a/openssl/crypto/evp/encode.c b/openssl/crypto/evp/encode.c
new file mode 100644
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--- /dev/null
+++ b/openssl/crypto/evp/encode.c
@@ -0,0 +1,445 @@
+/* crypto/evp/encode.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/evp.h>
+
+#ifndef CHARSET_EBCDIC
+#define conv_bin2ascii(a)	(data_bin2ascii[(a)&0x3f])
+#define conv_ascii2bin(a)	(data_ascii2bin[(a)&0x7f])
+#else
+/* We assume that PEM encoded files are EBCDIC files
+ * (i.e., printable text files). Convert them here while decoding.
+ * When encoding, output is EBCDIC (text) format again.
+ * (No need for conversion in the conv_bin2ascii macro, as the
+ * underlying textstring data_bin2ascii[] is already EBCDIC)
+ */
+#define conv_bin2ascii(a)	(data_bin2ascii[(a)&0x3f])
+#define conv_ascii2bin(a)	(data_ascii2bin[os_toascii[a]&0x7f])
+#endif
+
+/* 64 char lines
+ * pad input with 0
+ * left over chars are set to =
+ * 1 byte  => xx==
+ * 2 bytes => xxx=
+ * 3 bytes => xxxx
+ */
+#define BIN_PER_LINE    (64/4*3)
+#define CHUNKS_PER_LINE (64/4)
+#define CHAR_PER_LINE   (64+1)
+
+static const unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\
+abcdefghijklmnopqrstuvwxyz0123456789+/";
+
+/* 0xF0 is a EOLN
+ * 0xF1 is ignore but next needs to be 0xF0 (for \r\n processing).
+ * 0xF2 is EOF
+ * 0xE0 is ignore at start of line.
+ * 0xFF is error
+ */
+
+#define B64_EOLN		0xF0
+#define B64_CR			0xF1
+#define B64_EOF			0xF2
+#define B64_WS			0xE0
+#define B64_ERROR       	0xFF
+#define B64_NOT_BASE64(a)	(((a)|0x13) == 0xF3)
+
+static const unsigned char data_ascii2bin[128]={
+	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+	0xFF,0xE0,0xF0,0xFF,0xFF,0xF1,0xFF,0xFF,
+	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+	0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+	0xE0,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
+	0xFF,0xFF,0xFF,0x3E,0xFF,0xF2,0xFF,0x3F,
+	0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,
+	0x3C,0x3D,0xFF,0xFF,0xFF,0x00,0xFF,0xFF,
+	0xFF,0x00,0x01,0x02,0x03,0x04,0x05,0x06,
+	0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,
+	0x0F,0x10,0x11,0x12,0x13,0x14,0x15,0x16,
+	0x17,0x18,0x19,0xFF,0xFF,0xFF,0xFF,0xFF,
+	0xFF,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,
+	0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,
+	0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,0x30,
+	0x31,0x32,0x33,0xFF,0xFF,0xFF,0xFF,0xFF,
+	};
+
+void EVP_EncodeInit(EVP_ENCODE_CTX *ctx)
+	{
+	ctx->length=48;
+	ctx->num=0;
+	ctx->line_num=0;
+	}
+
+void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
+	     const unsigned char *in, int inl)
+	{
+	int i,j;
+	unsigned int total=0;
+
+	*outl=0;
+	if (inl == 0) return;
+	OPENSSL_assert(ctx->length <= (int)sizeof(ctx->enc_data));
+	if ((ctx->num+inl) < ctx->length)
+		{
+		memcpy(&(ctx->enc_data[ctx->num]),in,inl);
+		ctx->num+=inl;
+		return;
+		}
+	if (ctx->num != 0)
+		{
+		i=ctx->length-ctx->num;
+		memcpy(&(ctx->enc_data[ctx->num]),in,i);
+		in+=i;
+		inl-=i;
+		j=EVP_EncodeBlock(out,ctx->enc_data,ctx->length);
+		ctx->num=0;
+		out+=j;
+		*(out++)='\n';
+		*out='\0';
+		total=j+1;
+		}
+	while (inl >= ctx->length)
+		{
+		j=EVP_EncodeBlock(out,in,ctx->length);
+		in+=ctx->length;
+		inl-=ctx->length;
+		out+=j;
+		*(out++)='\n';
+		*out='\0';
+		total+=j+1;
+		}
+	if (inl != 0)
+		memcpy(&(ctx->enc_data[0]),in,inl);
+	ctx->num=inl;
+	*outl=total;
+	}
+
+void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
+	{
+	unsigned int ret=0;
+
+	if (ctx->num != 0)
+		{
+		ret=EVP_EncodeBlock(out,ctx->enc_data,ctx->num);
+		out[ret++]='\n';
+		out[ret]='\0';
+		ctx->num=0;
+		}
+	*outl=ret;
+	}
+
+int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen)
+	{
+	int i,ret=0;
+	unsigned long l;
+
+	for (i=dlen; i > 0; i-=3)
+		{
+		if (i >= 3)
+			{
+			l=	(((unsigned long)f[0])<<16L)|
+				(((unsigned long)f[1])<< 8L)|f[2];
+			*(t++)=conv_bin2ascii(l>>18L);
+			*(t++)=conv_bin2ascii(l>>12L);
+			*(t++)=conv_bin2ascii(l>> 6L);
+			*(t++)=conv_bin2ascii(l     );
+			}
+		else
+			{
+			l=((unsigned long)f[0])<<16L;
+			if (i == 2) l|=((unsigned long)f[1]<<8L);
+
+			*(t++)=conv_bin2ascii(l>>18L);
+			*(t++)=conv_bin2ascii(l>>12L);
+			*(t++)=(i == 1)?'=':conv_bin2ascii(l>> 6L);
+			*(t++)='=';
+			}
+		ret+=4;
+		f+=3;
+		}
+
+	*t='\0';
+	return(ret);
+	}
+
+void EVP_DecodeInit(EVP_ENCODE_CTX *ctx)
+	{
+	ctx->length=30;
+	ctx->num=0;
+	ctx->line_num=0;
+	ctx->expect_nl=0;
+	}
+
+/* -1 for error
+ *  0 for last line
+ *  1 for full line
+ */
+int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
+	     const unsigned char *in, int inl)
+	{
+	int seof= -1,eof=0,rv= -1,ret=0,i,v,tmp,n,ln,exp_nl;
+	unsigned char *d;
+
+	n=ctx->num;
+	d=ctx->enc_data;
+	ln=ctx->line_num;
+	exp_nl=ctx->expect_nl;
+
+	/* last line of input. */
+	if ((inl == 0) || ((n == 0) && (conv_ascii2bin(in[0]) == B64_EOF)))
+		{ rv=0; goto end; }
+		
+	/* We parse the input data */
+	for (i=0; i<inl; i++)
+		{
+		/* If the current line is > 80 characters, scream alot */
+		if (ln >= 80) { rv= -1; goto end; }
+
+		/* Get char and put it into the buffer */
+		tmp= *(in++);
+		v=conv_ascii2bin(tmp);
+		/* only save the good data :-) */
+		if (!B64_NOT_BASE64(v))
+			{
+			OPENSSL_assert(n < (int)sizeof(ctx->enc_data));
+			d[n++]=tmp;
+			ln++;
+			}
+		else if (v == B64_ERROR)
+			{
+			rv= -1;
+			goto end;
+			}
+
+		/* have we seen a '=' which is 'definitly' the last
+		 * input line.  seof will point to the character that
+		 * holds it. and eof will hold how many characters to
+		 * chop off. */
+		if (tmp == '=')
+			{
+			if (seof == -1) seof=n;
+			eof++;
+			}
+
+		if (v == B64_CR)
+			{
+			ln = 0;
+			if (exp_nl)
+				continue;
+			}
+
+		/* eoln */
+		if (v == B64_EOLN)
+			{
+			ln=0;
+			if (exp_nl)
+				{
+				exp_nl=0;
+				continue;
+				}
+			}
+		exp_nl=0;
+
+		/* If we are at the end of input and it looks like a
+		 * line, process it. */
+		if (((i+1) == inl) && (((n&3) == 0) || eof))
+			{
+			v=B64_EOF;
+			/* In case things were given us in really small
+			   records (so two '=' were given in separate
+			   updates), eof may contain the incorrect number
+			   of ending bytes to skip, so let's redo the count */
+			eof = 0;
+			if (d[n-1] == '=') eof++;
+			if (d[n-2] == '=') eof++;
+			/* There will never be more than two '=' */
+			}
+
+		if ((v == B64_EOF && (n&3) == 0) || (n >= 64))
+			{
+			/* This is needed to work correctly on 64 byte input
+			 * lines.  We process the line and then need to
+			 * accept the '\n' */
+			if ((v != B64_EOF) && (n >= 64)) exp_nl=1;
+			if (n > 0)
+				{
+				v=EVP_DecodeBlock(out,d,n);
+				n=0;
+				if (v < 0) { rv=0; goto end; }
+				ret+=(v-eof);
+				}
+			else
+				{
+				eof=1;
+				v=0;
+				}
+
+			/* This is the case where we have had a short
+			 * but valid input line */
+			if ((v < ctx->length) && eof)
+				{
+				rv=0;
+				goto end;
+				}
+			else
+				ctx->length=v;
+
+			if (seof >= 0) { rv=0; goto end; }
+			out+=v;
+			}
+		}
+	rv=1;
+end:
+	*outl=ret;
+	ctx->num=n;
+	ctx->line_num=ln;
+	ctx->expect_nl=exp_nl;
+	return(rv);
+	}
+
+int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n)
+	{
+	int i,ret=0,a,b,c,d;
+	unsigned long l;
+
+	/* trim white space from the start of the line. */
+	while ((conv_ascii2bin(*f) == B64_WS) && (n > 0))
+		{
+		f++;
+		n--;
+		}
+
+	/* strip off stuff at the end of the line
+	 * ascii2bin values B64_WS, B64_EOLN, B64_EOLN and B64_EOF */
+	while ((n > 3) && (B64_NOT_BASE64(conv_ascii2bin(f[n-1]))))
+		n--;
+
+	if (n%4 != 0) return(-1);
+
+	for (i=0; i<n; i+=4)
+		{
+		a=conv_ascii2bin(*(f++));
+		b=conv_ascii2bin(*(f++));
+		c=conv_ascii2bin(*(f++));
+		d=conv_ascii2bin(*(f++));
+		if (	(a & 0x80) || (b & 0x80) ||
+			(c & 0x80) || (d & 0x80))
+			return(-1);
+		l=(	(((unsigned long)a)<<18L)|
+			(((unsigned long)b)<<12L)|
+			(((unsigned long)c)<< 6L)|
+			(((unsigned long)d)     ));
+		*(t++)=(unsigned char)(l>>16L)&0xff;
+		*(t++)=(unsigned char)(l>> 8L)&0xff;
+		*(t++)=(unsigned char)(l     )&0xff;
+		ret+=3;
+		}
+	return(ret);
+	}
+
+int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
+	{
+	int i;
+
+	*outl=0;
+	if (ctx->num != 0)
+		{
+		i=EVP_DecodeBlock(out,ctx->enc_data,ctx->num);
+		if (i < 0) return(-1);
+		ctx->num=0;
+		*outl=i;
+		return(1);
+		}
+	else
+		return(1);
+	}
+
+#ifdef undef
+int EVP_DecodeValid(unsigned char *buf, int len)
+	{
+	int i,num=0,bad=0;
+
+	if (len == 0) return(-1);
+	while (conv_ascii2bin(*buf) == B64_WS)
+		{
+		buf++;
+		len--;
+		if (len == 0) return(-1);
+		}
+
+	for (i=len; i >= 4; i-=4)
+		{
+		if (	(conv_ascii2bin(buf[0]) >= 0x40) ||
+			(conv_ascii2bin(buf[1]) >= 0x40) ||
+			(conv_ascii2bin(buf[2]) >= 0x40) ||
+			(conv_ascii2bin(buf[3]) >= 0x40))
+			return(-1);
+		buf+=4;
+		num+=1+(buf[2] != '=')+(buf[3] != '=');
+		}
+	if ((i == 1) && (conv_ascii2bin(buf[0]) == B64_EOLN))
+		return(num);
+	if ((i == 2) && (conv_ascii2bin(buf[0]) == B64_EOLN) &&
+		(conv_ascii2bin(buf[0]) == B64_EOLN))
+		return(num);
+	return(1);
+	}
+#endif