diff options
author | Ralf S. Engelschall <rse@openssl.org> | 1998-12-21 10:52:47 +0000 |
---|---|---|
committer | Ralf S. Engelschall <rse@openssl.org> | 1998-12-21 10:52:47 +0000 |
commit | d02b48c63a58ea4367a0e905979f140b7d090f86 (patch) | |
tree | 504f62ed3d84799f785b9cd9fab255a21b0e1b0e /crypto/evp |
Import of old SSLeay release: SSLeay 0.8.1b
Diffstat (limited to 'crypto/evp')
50 files changed, 7703 insertions, 0 deletions
diff --git a/crypto/evp/Makefile.ssl b/crypto/evp/Makefile.ssl new file mode 100644 index 0000000000..20338119ef --- /dev/null +++ b/crypto/evp/Makefile.ssl @@ -0,0 +1,105 @@ +# +# SSLeay/crypto/evp/Makefile +# + +DIR= evp +TOP= ../.. +CC= cc +INCLUDES= -I.. -I../../include +CFLAG=-g +INSTALLTOP=/usr/local/ssl +MAKE= make -f Makefile.ssl +MAKEDEPEND= makedepend -f Makefile.ssl +MAKEFILE= Makefile.ssl +AR= ar r + +CFLAGS= $(INCLUDES) $(CFLAG) + +ERR=evp +ERRC=evp_err +GENERAL=Makefile +TEST= +APPS= + +LIB=$(TOP)/libcrypto.a +LIBSRC= encode.c digest.c evp_enc.c evp_key.c \ + e_ecb_d.c e_cbc_d.c e_cfb_d.c e_ofb_d.c \ + e_ecb_i.c e_cbc_i.c e_cfb_i.c e_ofb_i.c \ + e_ecb_3d.c e_cbc_3d.c e_rc4.c names.c \ + e_cfb_3d.c e_ofb_3d.c e_xcbc_d.c \ + e_ecb_r2.c e_cbc_r2.c e_cfb_r2.c e_ofb_r2.c \ + e_ecb_bf.c e_cbc_bf.c e_cfb_bf.c e_ofb_bf.c \ + m_null.c m_md2.c m_md5.c m_sha.c m_sha1.c m_dss.c m_dss1.c m_mdc2.c \ + p_open.c p_seal.c p_sign.c p_verify.c p_lib.c \ + bio_md.c bio_b64.c bio_enc.c $(ERRC).c e_null.c \ + c_all.c + +LIBOBJ= encode.o digest.o evp_enc.o evp_key.o \ + e_ecb_d.o e_cbc_d.o e_cfb_d.o e_ofb_d.o \ + e_ecb_i.o e_cbc_i.o e_cfb_i.o e_ofb_i.o \ + e_ecb_3d.o e_cbc_3d.o e_rc4.o names.o \ + e_cfb_3d.o e_ofb_3d.o e_xcbc_d.o \ + e_ecb_r2.o e_cbc_r2.o e_cfb_r2.o e_ofb_r2.o \ + e_ecb_bf.o e_cbc_bf.o e_cfb_bf.o e_ofb_bf.o \ + m_null.o m_md2.o m_md5.o m_sha.o m_sha1.o m_dss.o m_dss1.o m_mdc2.o \ + p_open.o p_seal.o p_sign.o p_verify.o p_lib.o \ + bio_md.o bio_b64.o bio_enc.o $(ERRC).o e_null.o \ + c_all.o + +SRC= $(LIBSRC) + +EXHEADER= evp.h +HEADER= $(EXHEADER) + +ALL= $(GENERAL) $(SRC) $(HEADER) + +top: + (cd ../..; $(MAKE) DIRS=crypto SDIRS=$(DIR) sub_all) + +all: lib + +lib: $(LIBOBJ) + $(AR) $(LIB) $(LIBOBJ) + sh $(TOP)/util/ranlib.sh $(LIB) + @touch lib + +files: + perl $(TOP)/util/files.pl Makefile.ssl >> $(TOP)/MINFO + +links: + /bin/rm -f Makefile + $(TOP)/util/point.sh Makefile.ssl Makefile ; + $(TOP)/util/mklink.sh ../../include $(EXHEADER) + $(TOP)/util/mklink.sh ../../test $(TEST) + $(TOP)/util/mklink.sh ../../apps $(APPS) + +install: + @for i in $(EXHEADER) ; \ + do \ + (cp $$i $(INSTALLTOP)/include/$$i; \ + chmod 644 $(INSTALLTOP)/include/$$i ); \ + done; + +tags: + ctags $(SRC) + +tests: + +lint: + lint -DLINT $(INCLUDES) $(SRC)>fluff + +depend: + $(MAKEDEPEND) $(INCLUDES) $(LIBSRC) + +dclean: + perl -pe 'if (/^# DO NOT DELETE THIS LINE/) {print; exit(0);}' $(MAKEFILE) >Makefile.new + mv -f Makefile.new $(MAKEFILE) + +clean: + /bin/rm -f *.o *.obj lib tags core .pure .nfs* *.old *.bak fluff + +errors: + perl $(TOP)/util/err-ins.pl $(ERR).err $(ERR).h + perl ../err/err_genc.pl $(ERR).h $(ERRC).c + +# DO NOT DELETE THIS LINE -- make depend depends on it. diff --git a/crypto/evp/bio_b64.c b/crypto/evp/bio_b64.c new file mode 100644 index 0000000000..e362dc3bfe --- /dev/null +++ b/crypto/evp/bio_b64.c @@ -0,0 +1,452 @@ +/* crypto/evp/bio_b64.c */ +/* Copyright (C) 1995-1997 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 <errno.h> +#include "cryptlib.h" +#include "buffer.h" +#include "evp.h" + +#ifndef NOPROTO +static int b64_write(BIO *h,char *buf,int num); +static int b64_read(BIO *h,char *buf,int size); +/*static int b64_puts(BIO *h,char *str); */ +/*static int b64_gets(BIO *h,char *str,int size); */ +static long b64_ctrl(BIO *h,int cmd,long arg1,char *arg2); +static int b64_new(BIO *h); +static int b64_free(BIO *data); +#else +static int b64_write(); +static int b64_read(); +/*static int b64_puts(); */ +/*static int b64_gets(); */ +static long b64_ctrl(); +static int b64_new(); +static int b64_free(); +#endif + +#define B64_BLOCK_SIZE 1024 +#define B64_NONE 0 +#define B64_ENCODE 1 +#define B64_DECODE 2 + +typedef struct b64_struct + { + /*BIO *bio; moved to the BIO structure */ + int buf_len; + int buf_off; + int tmp_len; /* used to find the start when decoding */ + int tmp_nl; /* If true, scan until '\n' */ + int encode; + int start; /* have we started decoding yet? */ + int cont; /* <= 0 when finished */ + EVP_ENCODE_CTX base64; + char buf[EVP_ENCODE_LENGTH(B64_BLOCK_SIZE)+10]; + char tmp[B64_BLOCK_SIZE]; + } BIO_B64_CTX; + +static BIO_METHOD methods_b64= + { + BIO_TYPE_BASE64,"base64 encoding", + b64_write, + b64_read, + NULL, /* b64_puts, */ + NULL, /* b64_gets, */ + b64_ctrl, + b64_new, + b64_free, + }; + +BIO_METHOD *BIO_f_base64() + { + return(&methods_b64); + } + +static int b64_new(bi) +BIO *bi; + { + BIO_B64_CTX *ctx; + + ctx=(BIO_B64_CTX *)Malloc(sizeof(BIO_B64_CTX)); + if (ctx == NULL) return(0); + + ctx->buf_len=0; + ctx->tmp_len=0; + ctx->tmp_nl=0; + ctx->buf_off=0; + ctx->cont=1; + ctx->start=1; + ctx->encode=0; + + bi->init=1; + bi->ptr=(char *)ctx; + bi->flags=0; + return(1); + } + +static int b64_free(a) +BIO *a; + { + if (a == NULL) return(0); + Free(a->ptr); + a->ptr=NULL; + a->init=0; + a->flags=0; + return(1); + } + +static int b64_read(b,out,outl) +BIO *b; +char *out; +int outl; + { + int ret=0,i,ii,j,k,x,n,num; + BIO_B64_CTX *ctx; + unsigned char *p,*q; + + if (out == NULL) return(0); + ctx=(BIO_B64_CTX *)b->ptr; + + if ((ctx == NULL) || (b->next_bio == NULL)) return(0); + + if (ctx->encode != B64_DECODE) + { + ctx->encode=B64_DECODE; + ctx->buf_len=0; + ctx->buf_off=0; + EVP_DecodeInit(&(ctx->base64)); + } + + /* First check if there are bytes decoded/encoded */ + if (ctx->buf_len > 0) + { + i=ctx->buf_len-ctx->buf_off; + if (i > outl) i=outl; + memcpy(out,&(ctx->buf[ctx->buf_off]),i); + ret=i; + out+=i; + outl-=i; + ctx->buf_off+=i; + if (ctx->buf_len == ctx->buf_off) + { + ctx->buf_len=0; + ctx->buf_off=0; + } + } + + /* At this point, we have room of outl bytes and an empty + * buffer, so we should read in some more. */ + + while (outl > 0) + { + if (ctx->cont <= 0) break; + + i=BIO_read(b->next_bio,&(ctx->tmp[ctx->tmp_len]), + B64_BLOCK_SIZE-ctx->tmp_len); + + if (i <= 0) + { + /* Should be continue next time we are called? */ + if (!BIO_should_retry(b->next_bio)) + ctx->cont=i; + break; + } + i+=ctx->tmp_len; + + /* We need to scan, a line at a time until we + * have a valid line if we are starting. */ + if (ctx->start) + { + q=p=(unsigned char *)ctx->tmp; + for (j=0; j<i; j++) + { + if (*(q++) != '\n') continue; + + /* due to a previous very long line, + * we need to keep on scanning for a '\n' + * before we even start looking for + * base64 encoded stuff. */ + if (ctx->tmp_nl) + { + p=q; + ctx->tmp_nl=0; + continue; + } + + k=EVP_DecodeUpdate(&(ctx->base64), + (unsigned char *)ctx->buf, + &num,p,q-p); + if ((k <= 0) && (num == 0) && (ctx->start)) + EVP_DecodeInit(&ctx->base64); + else + { + if (p != (unsigned char *) + &(ctx->tmp[0])) + { + i-=(p- (unsigned char *) + &(ctx->tmp[0])); + for (x=0; x < i; x++) + ctx->tmp[x]=p[x]; + EVP_DecodeInit(&ctx->base64); + } + ctx->start=0; + break; + } + p=q; + } + + /* we fell off the end without starting */ + if (j == i) + { + /* Is this is one long chunk?, if so, keep on + * reading until a new line. */ + if (p == (unsigned char *)&(ctx->tmp[0])) + { + ctx->tmp_nl=1; + ctx->tmp_len=0; + } + else if (p != q) /* finished on a '\n' */ + { + n=q-p; + for (ii=0; ii<n; ii++) + ctx->tmp[ii]=p[ii]; + ctx->tmp_len=n; + } + /* else finished on a '\n' */ + continue; + } + else + ctx->tmp_len=0; + } + i=EVP_DecodeUpdate(&(ctx->base64), + (unsigned char *)ctx->buf,&ctx->buf_len, + (unsigned char *)ctx->tmp,i); + ctx->cont=i; + ctx->buf_off=0; + if (i < 0) + { + ctx->buf_len=0; + break; + } + + if (ctx->buf_len <= outl) + i=ctx->buf_len; + else + i=outl; + + memcpy(out,ctx->buf,i); + ret+=i; + ctx->buf_off=i; + if (ctx->buf_off == ctx->buf_len) + { + ctx->buf_len=0; + ctx->buf_off=0; + } + outl-=i; + out+=i; + } + BIO_clear_retry_flags(b); + BIO_copy_next_retry(b); + return((ret == 0)?ctx->cont:ret); + } + +static int b64_write(b,in,inl) +BIO *b; +char *in; +int inl; + { + int ret=inl,n,i; + BIO_B64_CTX *ctx; + + ctx=(BIO_B64_CTX *)b->ptr; + BIO_clear_retry_flags(b); + + if (ctx->encode != B64_ENCODE) + { + ctx->encode=B64_ENCODE; + ctx->buf_len=0; + ctx->buf_off=0; + EVP_EncodeInit(&(ctx->base64)); + } + + n=ctx->buf_len-ctx->buf_off; + while (n > 0) + { + i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n); + if (i <= 0) + { + BIO_copy_next_retry(b); + return(i); + } + ctx->buf_off+=i; + n-=i; + } + /* at this point all pending data has been written */ + + if ((in == NULL) || (inl <= 0)) return(0); + + ctx->buf_off=0; + while (inl > 0) + { + n=(inl > B64_BLOCK_SIZE)?B64_BLOCK_SIZE:inl; + EVP_EncodeUpdate(&(ctx->base64), + (unsigned char *)ctx->buf,&ctx->buf_len, + (unsigned char *)in,n); + inl-=n; + in+=n; + + ctx->buf_off=0; + n=ctx->buf_len; + while (n > 0) + { + i=BIO_write(b->next_bio,&(ctx->buf[ctx->buf_off]),n); + if (i <= 0) + { + BIO_copy_next_retry(b); + return((ret == 0)?i:ret); + } + n-=i; + ctx->buf_off+=i; + } + ctx->buf_len=0; + ctx->buf_off=0; + } + return(ret); + } + +static long b64_ctrl(b,cmd,num,ptr) +BIO *b; +int cmd; +long num; +char *ptr; + { + BIO_B64_CTX *ctx; + long ret=1; + int i; + + ctx=(BIO_B64_CTX *)b->ptr; + + switch (cmd) + { + case BIO_CTRL_RESET: + ctx->cont=1; + ctx->start=1; + ctx->encode=B64_NONE; + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + case BIO_CTRL_EOF: /* More to read */ + if (ctx->cont <= 0) + ret=1; + else + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + case BIO_CTRL_WPENDING: /* More to write in buffer */ + ret=ctx->buf_len-ctx->buf_off; + if ((ret == 0) && (ctx->base64.num != 0)) + ret=1; + else if (ret <= 0) + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + case BIO_CTRL_PENDING: /* More to read in buffer */ + ret=ctx->buf_len-ctx->buf_off; + if (ret <= 0) + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + case BIO_CTRL_FLUSH: + /* do a final write */ +again: + while (ctx->buf_len != ctx->buf_off) + { + i=b64_write(b,NULL,0); + if (i < 0) + { + ret=i; + break; + } + } + if (ctx->base64.num != 0) + { + ctx->buf_off=0; + EVP_EncodeFinal(&(ctx->base64), + (unsigned char *)ctx->buf, + &(ctx->buf_len)); + /* push out the bytes */ + goto again; + } + /* Finally flush the underlying BIO */ + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + + case BIO_C_DO_STATE_MACHINE: + BIO_clear_retry_flags(b); + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + BIO_copy_next_retry(b); + break; + + case BIO_CTRL_DUP: + break; + case BIO_CTRL_INFO: + case BIO_CTRL_GET: + case BIO_CTRL_SET: + default: + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + } + return(ret); + } + diff --git a/crypto/evp/bio_enc.c b/crypto/evp/bio_enc.c new file mode 100644 index 0000000000..6020736fd0 --- /dev/null +++ b/crypto/evp/bio_enc.c @@ -0,0 +1,402 @@ +/* crypto/evp/bio_enc.c */ +/* Copyright (C) 1995-1997 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 <errno.h> +#include "cryptlib.h" +#include "buffer.h" +#include "evp.h" + +#ifndef NOPROTO +static int enc_write(BIO *h,char *buf,int num); +static int enc_read(BIO *h,char *buf,int size); +/*static int enc_puts(BIO *h,char *str); */ +/*static int enc_gets(BIO *h,char *str,int size); */ +static long enc_ctrl(BIO *h,int cmd,long arg1,char *arg2); +static int enc_new(BIO *h); +static int enc_free(BIO *data); +#else +static int enc_write(); +static int enc_read(); +/*static int enc_puts(); */ +/*static int enc_gets(); */ +static long enc_ctrl(); +static int enc_new(); +static int enc_free(); +#endif + +#define ENC_BLOCK_SIZE (1024*4) + +typedef struct enc_struct + { + int buf_len; + int buf_off; + int cont; /* <= 0 when finished */ + int finished; + int ok; /* bad decrypt */ + EVP_CIPHER_CTX cipher; + char buf[ENC_BLOCK_SIZE+10]; + } BIO_ENC_CTX; + +static BIO_METHOD methods_enc= + { + BIO_TYPE_CIPHER,"cipher", + enc_write, + enc_read, + NULL, /* enc_puts, */ + NULL, /* enc_gets, */ + enc_ctrl, + enc_new, + enc_free, + }; + +BIO_METHOD *BIO_f_cipher() + { + return(&methods_enc); + } + +static int enc_new(bi) +BIO *bi; + { + BIO_ENC_CTX *ctx; + + ctx=(BIO_ENC_CTX *)Malloc(sizeof(BIO_ENC_CTX)); + if (ctx == NULL) return(0); + + ctx->buf_len=0; + ctx->buf_off=0; + ctx->cont=1; + ctx->finished=0; + ctx->ok=1; + + bi->init=0; + bi->ptr=(char *)ctx; + bi->flags=0; + return(1); + } + +static int enc_free(a) +BIO *a; + { + BIO_ENC_CTX *b; + + if (a == NULL) return(0); + b=(BIO_ENC_CTX *)a->ptr; + EVP_CIPHER_CTX_cleanup(&(b->cipher)); + memset(a->ptr,0,sizeof(BIO_ENC_CTX)); + Free(a->ptr); + a->ptr=NULL; + a->init=0; + a->flags=0; + return(1); + } + +static int enc_read(b,out,outl) +BIO *b; +char *out; +int outl; + { + int ret=0,i; + BIO_ENC_CTX *ctx; + + if (out == NULL) return(0); + ctx=(BIO_ENC_CTX *)b->ptr; + + if ((ctx == NULL) || (b->next_bio == NULL)) return(0); + + /* First check if there are bytes decoded/encoded */ + if (ctx->buf_len > 0) + { + i=ctx->buf_len-ctx->buf_off; + if (i > outl) i=outl; + memcpy(out,&(ctx->buf[ctx->buf_off]),i); + ret=i; + out+=i; + outl-=i; + ctx->buf_off+=i; + if (ctx->buf_len == ctx->buf_off) + { + ctx->buf_len=0; < |