diff options
Diffstat (limited to 'openssl/crypto/bio/bf_buff.c')
-rw-r--r-- | openssl/crypto/bio/bf_buff.c | 511 |
1 files changed, 0 insertions, 511 deletions
diff --git a/openssl/crypto/bio/bf_buff.c b/openssl/crypto/bio/bf_buff.c deleted file mode 100644 index c1fd75aa..00000000 --- a/openssl/crypto/bio/bf_buff.c +++ /dev/null @@ -1,511 +0,0 @@ -/* 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> - -static int buffer_write(BIO *h, const char *buf,int num); -static int buffer_read(BIO *h, char *buf, int size); -static int buffer_puts(BIO *h, const char *str); -static int buffer_gets(BIO *h, char *str, int size); -static long buffer_ctrl(BIO *h, int cmd, long arg1, void *arg2); -static int buffer_new(BIO *h); -static int buffer_free(BIO *data); -static long buffer_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp); -#define DEFAULT_BUFFER_SIZE 4096 - -static BIO_METHOD methods_buffer= - { - BIO_TYPE_BUFFER, - "buffer", - buffer_write, - buffer_read, - buffer_puts, - buffer_gets, - buffer_ctrl, - buffer_new, - buffer_free, - buffer_callback_ctrl, - }; - -BIO_METHOD *BIO_f_buffer(void) - { - return(&methods_buffer); - } - -static int buffer_new(BIO *bi) - { - BIO_F_BUFFER_CTX *ctx; - - ctx=(BIO_F_BUFFER_CTX *)OPENSSL_malloc(sizeof(BIO_F_BUFFER_CTX)); - if (ctx == NULL) return(0); - ctx->ibuf=(char *)OPENSSL_malloc(DEFAULT_BUFFER_SIZE); - if (ctx->ibuf == NULL) { OPENSSL_free(ctx); return(0); } - ctx->obuf=(char *)OPENSSL_malloc(DEFAULT_BUFFER_SIZE); - if (ctx->obuf == NULL) { OPENSSL_free(ctx->ibuf); OPENSSL_free(ctx); return(0); } - ctx->ibuf_size=DEFAULT_BUFFER_SIZE; - ctx->obuf_size=DEFAULT_BUFFER_SIZE; - ctx->ibuf_len=0; - ctx->ibuf_off=0; - ctx->obuf_len=0; - ctx->obuf_off=0; - - bi->init=1; - bi->ptr=(char *)ctx; - bi->flags=0; - return(1); - } - -static int buffer_free(BIO *a) - { - BIO_F_BUFFER_CTX *b; - - if (a == NULL) return(0); - b=(BIO_F_BUFFER_CTX *)a->ptr; - if (b->ibuf != NULL) OPENSSL_free(b->ibuf); - 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 buffer_read(BIO *b, char *out, int outl) - { - int i,num=0; - BIO_F_BUFFER_CTX *ctx; - - if (out == NULL) return(0); - ctx=(BIO_F_BUFFER_CTX *)b->ptr; - - if ((ctx == NULL) || (b->next_bio == NULL)) return(0); - num=0; - BIO_clear_retry_flags(b); - -start: - i=ctx->ibuf_len; - /* If there is stuff left over, grab it */ - if (i != 0) - { - if (i > outl) i=outl; - memcpy(out,&(ctx->ibuf[ctx->ibuf_off]),i); - ctx->ibuf_off+=i; - ctx->ibuf_len-=i; - num+=i; - if (outl == i) return(num); - outl-=i; - out+=i; - } - - /* We may have done a partial read. try to do more. - * We have nothing in the buffer. - * If we get an error and have read some data, just return it - * and let them retry to get the error again. - * copy direct to parent address space */ - if (outl > ctx->ibuf_size) - { - for (;;) - { - i=BIO_read(b->next_bio,out,outl); - if (i <= 0) - { - BIO_copy_next_retry(b); - if (i < 0) return((num > 0)?num:i); - if (i == 0) return(num); - } - num+=i; - if (outl == i) return(num); - out+=i; - outl-=i; - } - } - /* else */ - - /* we are going to be doing some buffering */ - i=BIO_read(b->next_bio,ctx->ibuf,ctx->ibuf_size); - if (i <= 0) - { - BIO_copy_next_retry(b); - if (i < 0) return((num > 0)?num:i); - if (i == 0) return(num); - } - ctx->ibuf_off=0; - ctx->ibuf_len=i; - - /* Lets re-read using ourselves :-) */ - goto start; - } - -static int buffer_write(BIO *b, const char *in, int inl) - { - int i,num=0; - BIO_F_BUFFER_CTX *ctx; - - if ((in == NULL) || (inl <= 0)) return(0); - ctx=(BIO_F_BUFFER_CTX *)b->ptr; - if ((ctx == NULL) || (b->next_bio == NULL)) return(0); - - BIO_clear_retry_flags(b); -start: - i=ctx->obuf_size-(ctx->obuf_len+ctx->obuf_off); - /* add to buffer and return */ - if (i >= inl) - { - memcpy(&(ctx->obuf[ctx->obuf_len]),in,inl); - ctx->obuf_len+=inl; - return(num+inl); - } - /* else */ - /* stuff already in buffer, so add to it first, then flush */ - if (ctx->obuf_len != 0) - { - if (i > 0) /* lets fill it up if we can */ - { - memcpy(&(ctx->obuf[ctx->obuf_len]),in,i); - in+=i; - inl-=i; - num+=i; - ctx->obuf_len+=i; - } - /* we now have a full buffer needing flushing */ - for (;;) - { - i=BIO_write(b->next_bio,&(ctx->obuf[ctx->obuf_off]), - ctx->obuf_len); - if (i <= 0) - { - BIO_copy_next_retry(b); - - if (i < 0) return((num > 0)?num:i); - if (i == 0) return(num); - } - ctx->obuf_off+=i; - ctx->obuf_len-=i; - if (ctx->obuf_len == 0) break; - } - } - /* we only get here if the buffer has been flushed and we - * still have stuff to write */ - ctx->obuf_off=0; - - /* we now have inl bytes to write */ - while (inl >= ctx->obuf_size) - { - i=BIO_write(b->next_bio,in,inl); - if (i <= 0) - { - BIO_copy_next_retry(b); - if (i < 0) return((num > 0)?num:i); - if (i == 0) return(num); - } - num+=i; - in+=i; - inl-=i; - if (inl == 0) return(num); - } - - /* copy the rest into the buffer since we have only a small - * amount left */ - goto start; - } - -static long buffer_ctrl(BIO *b, int cmd, long num, void *ptr) - { - BIO *dbio; - BIO_F_BUFFER_CTX *ctx; - long ret=1; - char *p1,*p2; - int r,i,*ip; - int ibs,obs; - - ctx=(BIO_F_BUFFER_CTX *)b->ptr; - - switch (cmd) - { - case BIO_CTRL_RESET: - ctx->ibuf_off=0; - ctx->ibuf_len=0; - ctx->obuf_off=0; - 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_C_GET_BUFF_NUM_LINES: - ret=0; - p1=ctx->ibuf; - for (i=ctx->ibuf_off; i<ctx->ibuf_len; i++) - { - if (p1[i] == '\n') ret++; - } - 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_CTRL_PENDING: - ret=(long)ctx->ibuf_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_READ_DATA: - if (num > ctx->ibuf_size) - { - p1=OPENSSL_malloc((int)num); - if (p1 == NULL) goto malloc_error; - if (ctx->ibuf != NULL) OPENSSL_free(ctx->ibuf); - ctx->ibuf=p1; - } - ctx->ibuf_off=0; - ctx->ibuf_len=(int)num; - memcpy(ctx->ibuf,ptr,(int)num); - ret=1; - break; - case BIO_C_SET_BUFF_SIZE: - if (ptr != NULL) - { - ip=(int *)ptr; - if (*ip == 0) - { - ibs=(int)num; - obs=ctx->obuf_size; - } - else /* if (*ip == 1) */ - { - ibs=ctx->ibuf_size; - obs=(int)num; - } - } - else - { - ibs=(int)num; - obs=(int)num; - } - p1=ctx->ibuf; - p2=ctx->obuf; - if ((ibs > DEFAULT_BUFFER_SIZE) && (ibs != ctx->ibuf_size)) - { - p1=(char *)OPENSSL_malloc((int)num); - if (p1 == NULL) goto malloc_error; - } - if ((obs > DEFAULT_BUFFER_SIZE) && (obs != ctx->obuf_size)) - { - p2=(char *)OPENSSL_malloc((int)num); - if (p2 == NULL) - { - if (p1 != ctx->ibuf) OPENSSL_free(p1); - goto malloc_error; - } - } - if (ctx->ibuf != p1) - { - OPENSSL_free(ctx->ibuf); - ctx->ibuf=p1; - ctx->ibuf_off=0; - ctx->ibuf_len=0; - ctx->ibuf_size=ibs; - } - if (ctx->obuf != p2) - { - OPENSSL_free(ctx->obuf); - ctx->obuf=p2; - ctx->obuf_off=0; - ctx->obuf_len=0; - 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 > ctx->obuf_off) - { - r=BIO_write(b->next_bio, - &(ctx->obuf[ctx->obuf_off]), - ctx->obuf_len-ctx->obuf_off); -#if 0 -fprintf(stderr,"FLUSH [%3d] %3d -> %3d\n",ctx->obuf_off,ctx->obuf_len-ctx->obuf_off,r); -#endif - BIO_copy_next_retry(b); - if (r <= 0) return((long)r); - ctx->obuf_off+=r; - } - else - { - ctx->obuf_len=0; - ctx->obuf_off=0; - ret=1; - break; - } - } - ret=BIO_ctrl(b->next_bio,cmd,num,ptr); - break; - case BIO_CTRL_DUP: - dbio=(BIO *)ptr; - if ( !BIO_set_read_buffer_size(dbio,ctx->ibuf_size) || - !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_BUFFER_CTRL,ERR_R_MALLOC_FAILURE); - return(0); - } - -static long buffer_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 buffer_gets(BIO *b, char *buf, int size) - { - BIO_F_BUFFER_CTX *ctx; - int num=0,i,flag; - char *p; - - ctx=(BIO_F_BUFFER_CTX *)b->ptr; - size--; /* reserve space for a '\0' */ - BIO_clear_retry_flags(b); - - for (;;) - { - if (ctx->ibuf_len > 0) - { - p= &(ctx->ibuf[ctx->ibuf_off]); - flag=0; - for (i=0; (i<ctx->ibuf_len) && (i<size); i++) - { - *(buf++)=p[i]; - if (p[i] == '\n') - { - flag=1; - i++; - break; - } - } - num+=i; - size-=i; - ctx->ibuf_len-=i; - ctx->ibuf_off+=i; - if (flag || size == 0) - { - *buf='\0'; - return(num); - } - } - else /* read another chunk */ - { - i=BIO_read(b->next_bio,ctx->ibuf,ctx->ibuf_size); - if (i <= 0) - { - BIO_copy_next_retry(b); - *buf='\0'; - if (i < 0) return((num > 0)?num:i); - if (i == 0) return(num); - } - ctx->ibuf_len=i; - ctx->ibuf_off=0; - } - } - } - -static int buffer_puts(BIO *b, const char *str) - { - return(buffer_write(b,str,strlen(str))); - } - |