--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ssl/libcrypto/src/crypto/evp/encode.c Fri Jun 04 16:20:51 2010 +0100
@@ -0,0 +1,481 @@
+/* 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.]
+ */
+ /*
+ © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
+ */
+
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/evp.h>
+#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
+#include "libcrypto_wsd_macros.h"
+#include "libcrypto_wsd.h"
+#endif
+
+#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)
+
+#ifndef EMULATOR
+static unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\
+abcdefghijklmnopqrstuvwxyz0123456789+/";
+#else
+static const unsigned char data_bin2ascii[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZ\
+abcdefghijklmnopqrstuvwxyz0123456789+/";
+#endif
+
+/* 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)
+
+#ifndef EMULATOR
+static 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,
+ };
+
+#else
+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,
+ };
+#endif
+
+EXPORT_C void EVP_EncodeInit(EVP_ENCODE_CTX *ctx)
+ {
+ ctx->length=48;
+ ctx->num=0;
+ ctx->line_num=0;
+ }
+
+EXPORT_C 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;
+ }
+
+EXPORT_C 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;
+ }
+
+EXPORT_C 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);
+ }
+
+EXPORT_C 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
+ */
+EXPORT_C 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,tmp2,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;
+ tmp2=v;
+ 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);
+ }
+
+EXPORT_C 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);
+ }
+
+EXPORT_C 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
+EXPORT_C 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