diff options
author | Richard Levitte <levitte@openssl.org> | 2000-09-20 13:55:50 +0000 |
---|---|---|
committer | Richard Levitte <levitte@openssl.org> | 2000-09-20 13:55:50 +0000 |
commit | 645749ef98612340b11c4bf2ba856e1fa469912b (patch) | |
tree | 3a93d71b7f63b5b01f085c38211ce82af0778125 /crypto | |
parent | 9a0c0d3f7441515452caff3380b235bb15d33a5e (diff) |
On VMS, stdout may very well lead to a file that is written to in a
record-oriented fashion. That means that every write() will write a
separate record, which will be read separately by the programs trying
to read from it. This can be very confusing.
The solution is to put a BIO filter in the way that will buffer text
until a linefeed is reached, and then write everything a line at a
time, so every record written will be an actual line, not chunks of
lines and not (usually doesn't happen, but I've seen it once) several
lines in one record. Voila, BIO_f_linebuffer() is born.
Since we're so close to release time, I'm making this VMS-only for
now, just to make sure no code is needlessly broken by this. After
the release, this BIO method will be enabled on all other platforms as
well.
Diffstat (limited to 'crypto')
-rw-r--r-- | crypto/bio/Makefile.ssl | 2 | ||||
-rw-r--r-- | crypto/bio/bf_lbuf.c | 397 | ||||
-rw-r--r-- | crypto/bio/bio.h | 5 | ||||
-rw-r--r-- | crypto/bio/bio_err.c | 1 | ||||
-rw-r--r-- | crypto/crypto-lib.com | 3 |
5 files changed, 407 insertions, 1 deletions
diff --git a/crypto/bio/Makefile.ssl b/crypto/bio/Makefile.ssl index 17d2314398..af5998b102 100644 --- a/crypto/bio/Makefile.ssl +++ b/crypto/bio/Makefile.ssl @@ -27,11 +27,13 @@ LIBSRC= bio_lib.c bio_cb.c bio_err.c \ bss_file.c bss_sock.c bss_conn.c \ bf_null.c bf_buff.c b_print.c b_dump.c \ b_sock.c bss_acpt.c bf_nbio.c bss_log.c bss_bio.c +# bf_lbuf.c LIBOBJ= bio_lib.o bio_cb.o bio_err.o \ bss_mem.o bss_null.o bss_fd.o \ bss_file.o bss_sock.o bss_conn.o \ bf_null.o bf_buff.o b_print.o b_dump.o \ b_sock.o bss_acpt.o bf_nbio.o bss_log.o bss_bio.o +# bf_lbuf.o SRC= $(LIBSRC) diff --git a/crypto/bio/bf_lbuf.c b/crypto/bio/bf_lbuf.c new file mode 100644 index 0000000000..7bcf8ed941 --- /dev/null +++ b/crypto/bio/bf_lbuf.c @@ -0,0 +1,397 @@ +/* crypto/bio/bf_buff.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 <errno.h> +#include "cryptlib.h" +#include <openssl/bio.h> +#include <openssl/evp.h> + +static int linebuffer_write(BIO *h, const char *buf,int num); +static int linebuffer_read(BIO *h, char *buf, int size); +static int linebuffer_puts(BIO *h, const char *str); +static int linebuffer_gets(BIO *h, char *str, int size); +static long linebuffer_ctrl(BIO *h, int cmd, long arg1, void *arg2); +static int linebuffer_new(BIO *h); +static int linebuffer_free(BIO *data); +static long linebuffer_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp); + +/* A 10k maximum should be enough for most purposes */ +#define DEFAULT_LINEBUFFER_SIZE 1024*10 + +/* #define DEBUG */ + +static BIO_METHOD methods_linebuffer= + { + BIO_TYPE_LINEBUFFER, + "linebuffer", + linebuffer_write, + linebuffer_read, + linebuffer_puts, + linebuffer_gets, + linebuffer_ctrl, + linebuffer_new, + linebuffer_free, + linebuffer_callback_ctrl, + }; + +BIO_METHOD *BIO_f_linebuffer(void) + { + return(&methods_linebuffer); + } + +typedef struct bio_linebuffer_ctx_struct + { + char *obuf; /* the output char array */ + int obuf_size; /* how big is the output buffer */ + int obuf_len; /* how many bytes are in it */ + } BIO_LINEBUFFER_CTX; + +static int linebuffer_new(BIO *bi) + { + BIO_LINEBUFFER_CTX *ctx; + + ctx=(BIO_LINEBUFFER_CTX *)OPENSSL_malloc(sizeof(BIO_LINEBUFFER_CTX)); + if (ctx == NULL) return(0); + ctx->obuf=(char *)OPENSSL_malloc(DEFAULT_LINEBUFFER_SIZE); + if (ctx->obuf == NULL) { OPENSSL_free(ctx); return(0); } + ctx->obuf_size=DEFAULT_LINEBUFFER_SIZE; + ctx->obuf_len=0; + + bi->init=1; + bi->ptr=(char *)ctx; + bi->flags=0; + return(1); + } + +static int linebuffer_free(BIO *a) + { + BIO_LINEBUFFER_CTX *b; + + if (a == NULL) return(0); + b=(BIO_LINEBUFFER_CTX *)a->ptr; + if (b->obuf != NULL) OPENSSL_free(b->obuf); + OPENSSL_free(a->ptr); + a->ptr=NULL; + a->init=0; + a->flags=0; + return(1); + } + +static int linebuffer_read(BIO *b, char *out, int outl) + { + int ret=0; + + if (out == NULL) return(0); + if (b->next_bio == NULL) return(0); + ret=BIO_read(b->next_bio,out,outl); + BIO_clear_retry_flags(b); + BIO_copy_next_retry(b); + return(ret); + } + +static int linebuffer_write(BIO *b, const char *in, int inl) + { + int i,num=0,foundnl; + BIO_LINEBUFFER_CTX *ctx; + + if ((in == NULL) || (inl <= 0)) return(0); + ctx=(BIO_LINEBUFFER_CTX *)b->ptr; + if ((ctx == NULL) || (b->next_bio == NULL)) return(0); + + BIO_clear_retry_flags(b); + + do + { + const char *p; + + for(p = in; p < in + inl && *p != '\n'; p++) + ; + if (*p == '\n') + { + p++; + foundnl = 1; + } + else + foundnl = 0; + + /* If a NL was found and we already have text in the save + buffer, concatenate them and write */ + while ((foundnl || p - in > ctx->obuf_size - ctx->obuf_len) + && ctx->obuf_len > 0) + { + int orig_olen = ctx->obuf_len; + + i = ctx->obuf_size - ctx->obuf_len; + if (p - in > 0) + { + if (i >= p - in) + { + memcpy(&(ctx->obuf[ctx->obuf_len]), + in,p - in); + ctx->obuf_len += p - in; + inl -= p - in; + num += p - in; + in = p; + } + else + { + memcpy(&(ctx->obuf[ctx->obuf_len]), + in,i); + ctx->obuf_len += i; + inl -= i; + in += i; + num += i; + } + } + +#ifdef DEBUG +BIO_write(b->next_bio, "<*<", 3); +#endif + i=BIO_write(b->next_bio, + ctx->obuf, ctx->obuf_len); + if (i <= 0) + { + ctx->obuf_len = orig_olen; + BIO_copy_next_retry(b); + +#ifdef DEBUG +BIO_write(b->next_bio, ">*>", 3); +#endif + if (i < 0) return((num > 0)?num:i); + if (i == 0) return(num); + } +#ifdef DEBUG +BIO_write(b->next_bio, ">*>", 3); +#endif + if (i < ctx->obuf_len) + memmove(ctx->obuf, ctx->obuf + i, + ctx->obuf_len - i); + ctx->obuf_len-=i; + } + + /* Now that the save buffer is emptied, let's write the input + buffer if a NL was found and there is anything to write. */ + if ((foundnl || p - in > ctx->obuf_size) && p - in > 0) + { +#ifdef DEBUG +BIO_write(b->next_bio, "<*<", 3); +#endif + i=BIO_write(b->next_bio,in,p - in); + if (i <= 0) + { + BIO_copy_next_retry(b); +#ifdef DEBUG +BIO_write(b->next_bio, ">*>", 3); +#endif + if (i < 0) return((num > 0)?num:i); + if (i == 0) return(num); + } +#ifdef DEBUG +BIO_write(b->next_bio, ">*>", 3); +#endif + num+=i; + in+=i; + inl-=i; + } + } + while(foundnl && inl > 0); + /* We've written as much as we can. The rest of the input buffer, if + any, is text that doesn't and with a NL and therefore needs to be + saved for the next trip. */ + if (inl > 0) + { + memcpy(&(ctx->obuf[ctx->obuf_len]), in, inl); + ctx->obuf_len += inl; + num += inl; + } + return num; + } + +static long linebuffer_ctrl(BIO *b, int cmd, long num, void *ptr) + { + BIO *dbio; + BIO_LINEBUFFER_CTX *ctx; + long ret=1; + char *p; + int r; + int obs; + + ctx=(BIO_LINEBUFFER_CTX *)b->ptr; + + switch (cmd) + { + case BIO_CTRL_RESET: + ctx->obuf_len=0; + if (b->next_bio == NULL) return(0); + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + case BIO_CTRL_INFO: + ret=(long)ctx->obuf_len; + break; + case BIO_CTRL_WPENDING: + ret=(long)ctx->obuf_len; + if (ret == 0) + { + if (b->next_bio == NULL) return(0); + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + } + break; + case BIO_C_SET_BUFF_SIZE: + obs=(int)num; + p=ctx->obuf; + if ((obs > DEFAULT_LINEBUFFER_SIZE) && (obs != ctx->obuf_size)) + { + p=(char *)OPENSSL_malloc((int)num); + if (p == NULL) + goto malloc_error; + } + if (ctx->obuf != p) + { + if (ctx->obuf_len > obs) + { + ctx->obuf_len = obs; + } + memcpy(p, ctx->obuf, ctx->obuf_len); + OPENSSL_free(ctx->obuf); + ctx->obuf=p; + ctx->obuf_size=obs; + } + break; + case BIO_C_DO_STATE_MACHINE: + if (b->next_bio == NULL) return(0); + BIO_clear_retry_flags(b); + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + BIO_copy_next_retry(b); + break; + + case BIO_CTRL_FLUSH: + if (b->next_bio == NULL) return(0); + if (ctx->obuf_len <= 0) + { + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + } + + for (;;) + { + BIO_clear_retry_flags(b); + if (ctx->obuf_len > 0) + { + r=BIO_write(b->next_bio, + ctx->obuf, ctx->obuf_len); +#if 0 +fprintf(stderr,"FLUSH %3d -> %3d\n",ctx->obuf_len,r); +#endif + BIO_copy_next_retry(b); + if (r <= 0) return((long)r); + if (r < ctx->obuf_len) + memmove(ctx->obuf, ctx->obuf + r, + ctx->obuf_len - r); + ctx->obuf_len-=r; + } + else + { + ctx->obuf_len=0; + ret=1; + break; + } + } + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + case BIO_CTRL_DUP: + dbio=(BIO *)ptr; + if ( !BIO_set_write_buffer_size(dbio,ctx->obuf_size)) + ret=0; + break; + default: + if (b->next_bio == NULL) return(0); + ret=BIO_ctrl(b->next_bio,cmd,num,ptr); + break; + } + return(ret); +malloc_error: + BIOerr(BIO_F_LINEBUFFER_CTRL,ERR_R_MALLOC_FAILURE); + return(0); + } + +static long linebuffer_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) + { + long ret=1; + + if (b->next_bio == NULL) return(0); + switch (cmd) + { + default: + ret=BIO_callback_ctrl(b->next_bio,cmd,fp); + break; + } + return(ret); + } + +static int linebuffer_gets(BIO *b, char *buf, int size) + { + if (b->next_bio == NULL) return(0); + return(BIO_gets(b->next_bio,buf,size)); + } + +static int linebuffer_puts(BIO *b, const char *str) + { + return(linebuffer_write(b,str,strlen(str))); + } + diff --git a/crypto/bio/bio.h b/crypto/bio/bio.h index b7ab206777..97003b503c 100644 --- a/crypto/bio/bio.h +++ b/crypto/bio/bio.h @@ -91,6 +91,7 @@ extern "C" { #define BIO_TYPE_NULL_FILTER (17|0x0200) #define BIO_TYPE_BER (18|0x0200) /* BER -> bin filter */ #define BIO_TYPE_BIO (19|0x0400) /* (half a) BIO pair */ +#define BIO_TYPE_LINEBUFFER (20|0x0200) /* filter */ #define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */ #define BIO_TYPE_FILTER 0x0200 @@ -554,6 +555,9 @@ BIO_METHOD *BIO_s_bio(void); BIO_METHOD *BIO_s_null(void); BIO_METHOD *BIO_f_null(void); BIO_METHOD *BIO_f_buffer(void); +#ifdef VMS +BIO_METHOD *BIO_f_linebuffer(void); +#endif BIO_METHOD *BIO_f_nbio_test(void); /* BIO_METHOD *BIO_f_ber(void); */ @@ -640,6 +644,7 @@ int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args); #define BIO_F_CONN_CTRL 127 #define BIO_F_CONN_STATE 115 #define BIO_F_FILE_CTRL 116 +#define BIO_F_LINEBUFFER_CTRL 129 #define BIO_F_MEM_READ 128 #define BIO_F_MEM_WRITE 117 #define BIO_F_SSL_NEW 118 diff --git a/crypto/bio/bio_err.c b/crypto/bio/bio_err.c index fb99195471..bb815fb1e6 100644 --- a/crypto/bio/bio_err.c +++ b/crypto/bio/bio_err.c @@ -91,6 +91,7 @@ static ERR_STRING_DATA BIO_str_functs[]= {ERR_PACK(0,BIO_F_CONN_CTRL,0), "CONN_CTRL"}, {ERR_PACK(0,BIO_F_CONN_STATE,0), "CONN_STATE"}, {ERR_PACK(0,BIO_F_FILE_CTRL,0), "FILE_CTRL"}, +{ERR_PACK(0,BIO_F_LINEBUFFER_CTRL,0), "LINEBUFFER_CTRL"}, {ERR_PACK(0,BIO_F_MEM_READ,0), "MEM_READ"}, {ERR_PACK(0,BIO_F_MEM_WRITE,0), "MEM_WRITE"}, {ERR_PACK(0,BIO_F_SSL_NEW,0), "SSL_new"}, diff --git a/crypto/crypto-lib.com b/crypto/crypto-lib.com index 73337b3d9a..edffeffde1 100644 --- a/crypto/crypto-lib.com +++ b/crypto/crypto-lib.com @@ -211,7 +211,8 @@ $ LIB_BIO = "bio_lib,bio_cb,bio_err,"+ - "bss_mem,bss_null,bss_fd,"+ - "bss_file,bss_sock,bss_conn,"+ - "bf_null,bf_buff,b_print,b_dump,"+ - - "b_sock,bss_acpt,bf_nbio,bss_rtcp,bss_bio,bss_log" + "b_sock,bss_acpt,bf_nbio,bss_rtcp,bss_bio,bss_log,"+ - + "bf_lbuf" $ LIB_STACK = "stack" $ LIB_LHASH = "lhash,lh_stats" $ LIB_RAND = "md_rand,randfile,rand_lib,rand_err,rand_egd,rand_win" |