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@@ -1,723 +0,0 @@
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-/*
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- * Copyright 1998-2023 The OpenSSL Project Authors. All Rights Reserved.
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- *
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- * Licensed under the Apache License 2.0 (the "License"). You may not use
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- * this file except in compliance with the License. You can obtain a copy
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- * in the file LICENSE in the source distribution or at
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- * https://www.openssl.org/source/license.html
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- */
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-
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-#include <stdio.h>
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-#include <stdlib.h>
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-#include <string.h>
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-#include <openssl/objects.h>
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-#include "internal/comp.h"
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-#include <openssl/err.h>
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-#include "crypto/cryptlib.h"
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-#include "internal/bio.h"
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-#include "internal/thread_once.h"
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-#include "comp_local.h"
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-
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-COMP_METHOD *COMP_zlib(void);
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-
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-#ifdef OPENSSL_NO_ZLIB
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-# undef ZLIB_SHARED
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-#else
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-
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-# include <zlib.h>
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-
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-static int zlib_stateful_init(COMP_CTX *ctx);
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-static void zlib_stateful_finish(COMP_CTX *ctx);
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-static ossl_ssize_t zlib_stateful_compress_block(COMP_CTX *ctx, unsigned char *out,
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- size_t olen, unsigned char *in,
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- size_t ilen);
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-static ossl_ssize_t zlib_stateful_expand_block(COMP_CTX *ctx, unsigned char *out,
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- size_t olen, unsigned char *in,
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- size_t ilen);
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-
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-/* memory allocations functions for zlib initialisation */
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-static void *zlib_zalloc(void *opaque, unsigned int no, unsigned int size)
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-{
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- void *p;
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-
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- p = OPENSSL_zalloc(no * size);
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- return p;
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-}
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-
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-static void zlib_zfree(void *opaque, void *address)
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-{
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- OPENSSL_free(address);
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-}
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-
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-
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-static COMP_METHOD zlib_stateful_method = {
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- NID_zlib_compression,
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- LN_zlib_compression,
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- zlib_stateful_init,
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- zlib_stateful_finish,
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- zlib_stateful_compress_block,
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- zlib_stateful_expand_block
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-};
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-
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-/*
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- * When OpenSSL is built on Windows, we do not want to require that
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- * the ZLIB.DLL be available in order for the OpenSSL DLLs to
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- * work. Therefore, all ZLIB routines are loaded at run time
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- * and we do not link to a .LIB file when ZLIB_SHARED is set.
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- */
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-# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
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-# include <windows.h>
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-# endif /* !(OPENSSL_SYS_WINDOWS ||
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- * OPENSSL_SYS_WIN32) */
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-
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-# ifdef ZLIB_SHARED
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-# include "internal/dso.h"
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-
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-/* Function pointers */
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-typedef int (*compress_ft) (Bytef *dest, uLongf *destLen,
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- const Bytef *source, uLong sourceLen);
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-typedef int (*uncompress_ft) (Bytef *dest, uLongf *destLen,
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- const Bytef *source, uLong sourceLen);
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-typedef int (*inflateEnd_ft) (z_streamp strm);
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-typedef int (*inflate_ft) (z_streamp strm, int flush);
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-typedef int (*inflateInit__ft) (z_streamp strm,
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- const char *version, int stream_size);
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-typedef int (*deflateEnd_ft) (z_streamp strm);
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-typedef int (*deflate_ft) (z_streamp strm, int flush);
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-typedef int (*deflateInit__ft) (z_streamp strm, int level,
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- const char *version, int stream_size);
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-typedef const char *(*zError__ft) (int err);
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-static compress_ft p_compress = NULL;
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-static uncompress_ft p_uncompress = NULL;
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-static inflateEnd_ft p_inflateEnd = NULL;
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-static inflate_ft p_inflate = NULL;
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-static inflateInit__ft p_inflateInit_ = NULL;
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-static deflateEnd_ft p_deflateEnd = NULL;
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-static deflate_ft p_deflate = NULL;
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-static deflateInit__ft p_deflateInit_ = NULL;
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-static zError__ft p_zError = NULL;
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-
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-static DSO *zlib_dso = NULL;
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-
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-# define compress p_compress
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-# define uncompress p_uncompress
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-# define inflateEnd p_inflateEnd
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-# define inflate p_inflate
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-# define inflateInit_ p_inflateInit_
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-# define deflateEnd p_deflateEnd
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-# define deflate p_deflate
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-# define deflateInit_ p_deflateInit_
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-# define zError p_zError
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-# endif /* ZLIB_SHARED */
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-
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-struct zlib_state {
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- z_stream istream;
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- z_stream ostream;
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-};
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-
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-static int zlib_stateful_init(COMP_CTX *ctx)
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-{
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- int err;
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- struct zlib_state *state = OPENSSL_zalloc(sizeof(*state));
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-
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- if (state == NULL)
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- goto err;
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-
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- state->istream.zalloc = zlib_zalloc;
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- state->istream.zfree = zlib_zfree;
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- state->istream.opaque = Z_NULL;
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- state->istream.next_in = Z_NULL;
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- state->istream.next_out = Z_NULL;
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- err = inflateInit_(&state->istream, ZLIB_VERSION, sizeof(z_stream));
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- if (err != Z_OK)
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- goto err;
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-
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- state->ostream.zalloc = zlib_zalloc;
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- state->ostream.zfree = zlib_zfree;
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- state->ostream.opaque = Z_NULL;
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- state->ostream.next_in = Z_NULL;
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- state->ostream.next_out = Z_NULL;
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- err = deflateInit_(&state->ostream, Z_DEFAULT_COMPRESSION,
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- ZLIB_VERSION, sizeof(z_stream));
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- if (err != Z_OK)
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- goto err;
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-
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- ctx->data = state;
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- return 1;
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- err:
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- OPENSSL_free(state);
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- return 0;
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-}
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-
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-static void zlib_stateful_finish(COMP_CTX *ctx)
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-{
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- struct zlib_state *state = ctx->data;
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- inflateEnd(&state->istream);
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- deflateEnd(&state->ostream);
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- OPENSSL_free(state);
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-}
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-
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-static ossl_ssize_t zlib_stateful_compress_block(COMP_CTX *ctx, unsigned char *out,
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- size_t olen, unsigned char *in,
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- size_t ilen)
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-{
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- int err = Z_OK;
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- struct zlib_state *state = ctx->data;
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-
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- if (state == NULL)
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- return -1;
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-
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- state->ostream.next_in = in;
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- state->ostream.avail_in = ilen;
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- state->ostream.next_out = out;
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- state->ostream.avail_out = olen;
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- if (ilen > 0)
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- err = deflate(&state->ostream, Z_SYNC_FLUSH);
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- if (err != Z_OK)
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- return -1;
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- if (state->ostream.avail_out > olen)
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- return -1;
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- return (ossl_ssize_t)(olen - state->ostream.avail_out);
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-}
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-
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-static ossl_ssize_t zlib_stateful_expand_block(COMP_CTX *ctx, unsigned char *out,
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- size_t olen, unsigned char *in,
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- size_t ilen)
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-{
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- int err = Z_OK;
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- struct zlib_state *state = ctx->data;
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-
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- if (state == NULL)
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- return 0;
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-
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- state->istream.next_in = in;
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- state->istream.avail_in = ilen;
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- state->istream.next_out = out;
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- state->istream.avail_out = olen;
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- if (ilen > 0)
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- err = inflate(&state->istream, Z_SYNC_FLUSH);
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- if (err != Z_OK)
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- return -1;
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- if (state->istream.avail_out > olen)
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- return -1;
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- return (ossl_ssize_t)(olen - state->istream.avail_out);
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-}
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-
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-/* ONESHOT COMPRESSION/DECOMPRESSION */
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-
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-static int zlib_oneshot_init(COMP_CTX *ctx)
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-{
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- return 1;
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-}
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-
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-static void zlib_oneshot_finish(COMP_CTX *ctx)
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-{
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-}
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-
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-static ossl_ssize_t zlib_oneshot_compress_block(COMP_CTX *ctx, unsigned char *out,
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- size_t olen, unsigned char *in,
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- size_t ilen)
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-{
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- uLongf out_size;
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-
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- if (ilen == 0)
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- return 0;
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-
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- /* zlib's uLongf defined as unsigned long FAR */
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- if (olen > ULONG_MAX)
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- return -1;
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- out_size = (uLongf)olen;
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-
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- if (compress(out, &out_size, in, ilen) != Z_OK)
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- return -1;
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-
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- if (out_size > OSSL_SSIZE_MAX)
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- return -1;
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- return (ossl_ssize_t)out_size;
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-}
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-
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-static ossl_ssize_t zlib_oneshot_expand_block(COMP_CTX *ctx, unsigned char *out,
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- size_t olen, unsigned char *in,
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- size_t ilen)
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-{
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- uLongf out_size;
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-
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- if (ilen == 0)
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- return 0;
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-
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- /* zlib's uLongf defined as unsigned long FAR */
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- if (olen > ULONG_MAX)
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- return -1;
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- out_size = (uLongf)olen;
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-
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- if (uncompress(out, &out_size, in, ilen) != Z_OK)
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- return -1;
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-
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- if (out_size > OSSL_SSIZE_MAX)
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- return -1;
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- return (ossl_ssize_t)out_size;
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-}
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-
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-static COMP_METHOD zlib_oneshot_method = {
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- NID_zlib_compression,
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- LN_zlib_compression,
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- zlib_oneshot_init,
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- zlib_oneshot_finish,
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- zlib_oneshot_compress_block,
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- zlib_oneshot_expand_block
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-};
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-
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-static CRYPTO_ONCE zlib_once = CRYPTO_ONCE_STATIC_INIT;
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-DEFINE_RUN_ONCE_STATIC(ossl_comp_zlib_init)
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-{
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-# ifdef ZLIB_SHARED
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- /* LIBZ may be externally defined, and we should respect that value */
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-# ifndef LIBZ
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-# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
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-# define LIBZ "ZLIB1"
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-# elif defined(OPENSSL_SYS_VMS)
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-# define LIBZ "LIBZ"
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-# else
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-# define LIBZ "z"
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-# endif
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-# endif
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-
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- zlib_dso = DSO_load(NULL, LIBZ, NULL, 0);
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- if (zlib_dso != NULL) {
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- p_compress = (compress_ft) DSO_bind_func(zlib_dso, "compress");
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- p_uncompress = (compress_ft) DSO_bind_func(zlib_dso, "uncompress");
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- p_inflateEnd = (inflateEnd_ft) DSO_bind_func(zlib_dso, "inflateEnd");
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- p_inflate = (inflate_ft) DSO_bind_func(zlib_dso, "inflate");
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- p_inflateInit_ = (inflateInit__ft) DSO_bind_func(zlib_dso, "inflateInit_");
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- p_deflateEnd = (deflateEnd_ft) DSO_bind_func(zlib_dso, "deflateEnd");
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- p_deflate = (deflate_ft) DSO_bind_func(zlib_dso, "deflate");
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- p_deflateInit_ = (deflateInit__ft) DSO_bind_func(zlib_dso, "deflateInit_");
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- p_zError = (zError__ft) DSO_bind_func(zlib_dso, "zError");
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-
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- if (p_compress == NULL || p_uncompress == NULL || p_inflateEnd == NULL
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- || p_inflate == NULL || p_inflateInit_ == NULL
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- || p_deflateEnd == NULL || p_deflate == NULL
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- || p_deflateInit_ == NULL || p_zError == NULL) {
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- ossl_comp_zlib_cleanup();
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- return 0;
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- }
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- }
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-# endif
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- return 1;
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-}
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-#endif
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-
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-COMP_METHOD *COMP_zlib(void)
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-{
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- COMP_METHOD *meth = NULL;
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-
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-#ifndef OPENSSL_NO_ZLIB
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- if (RUN_ONCE(&zlib_once, ossl_comp_zlib_init))
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- meth = &zlib_stateful_method;
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-#endif
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-
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- return meth;
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-}
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-
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-COMP_METHOD *COMP_zlib_oneshot(void)
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-{
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- COMP_METHOD *meth = NULL;
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-
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-#ifndef OPENSSL_NO_ZLIB
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- if (RUN_ONCE(&zlib_once, ossl_comp_zlib_init))
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- meth = &zlib_oneshot_method;
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-#endif
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-
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- return meth;
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-}
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-
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-/* Also called from OPENSSL_cleanup() */
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-void ossl_comp_zlib_cleanup(void)
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-{
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-#ifdef ZLIB_SHARED
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- DSO_free(zlib_dso);
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- zlib_dso = NULL;
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-#endif
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-}
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-
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-#ifndef OPENSSL_NO_ZLIB
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-
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-/* Zlib based compression/decompression filter BIO */
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-
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-typedef struct {
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- unsigned char *ibuf; /* Input buffer */
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- int ibufsize; /* Buffer size */
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- z_stream zin; /* Input decompress context */
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- unsigned char *obuf; /* Output buffer */
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- int obufsize; /* Output buffer size */
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- unsigned char *optr; /* Position in output buffer */
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- int ocount; /* Amount of data in output buffer */
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- int odone; /* deflate EOF */
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- int comp_level; /* Compression level to use */
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- z_stream zout; /* Output compression context */
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-} BIO_ZLIB_CTX;
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-
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-# define ZLIB_DEFAULT_BUFSIZE 1024
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-
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-static int bio_zlib_new(BIO *bi);
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-static int bio_zlib_free(BIO *bi);
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-static int bio_zlib_read(BIO *b, char *out, int outl);
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-static int bio_zlib_write(BIO *b, const char *in, int inl);
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-static long bio_zlib_ctrl(BIO *b, int cmd, long num, void *ptr);
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-static long bio_zlib_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp);
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-
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-static const BIO_METHOD bio_meth_zlib = {
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- BIO_TYPE_COMP,
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- "zlib",
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- bwrite_conv,
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- bio_zlib_write,
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- bread_conv,
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- bio_zlib_read,
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- NULL, /* bio_zlib_puts, */
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- NULL, /* bio_zlib_gets, */
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- bio_zlib_ctrl,
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- bio_zlib_new,
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- bio_zlib_free,
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- bio_zlib_callback_ctrl
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-};
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-#endif
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-
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-const BIO_METHOD *BIO_f_zlib(void)
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-{
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-#ifndef OPENSSL_NO_ZLIB
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- if (RUN_ONCE(&zlib_once, ossl_comp_zlib_init))
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- return &bio_meth_zlib;
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-#endif
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- return NULL;
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-}
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-
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-#ifndef OPENSSL_NO_ZLIB
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-static int bio_zlib_new(BIO *bi)
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-{
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|
|
- BIO_ZLIB_CTX *ctx;
|
|
|
-
|
|
|
-# ifdef ZLIB_SHARED
|
|
|
- if (!RUN_ONCE(&zlib_once, ossl_comp_zlib_init)) {
|
|
|
- ERR_raise(ERR_LIB_COMP, COMP_R_ZLIB_NOT_SUPPORTED);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-# endif
|
|
|
- ctx = OPENSSL_zalloc(sizeof(*ctx));
|
|
|
- if (ctx == NULL)
|
|
|
- return 0;
|
|
|
- ctx->ibufsize = ZLIB_DEFAULT_BUFSIZE;
|
|
|
- ctx->obufsize = ZLIB_DEFAULT_BUFSIZE;
|
|
|
- ctx->zin.zalloc = Z_NULL;
|
|
|
- ctx->zin.zfree = Z_NULL;
|
|
|
- ctx->zout.zalloc = Z_NULL;
|
|
|
- ctx->zout.zfree = Z_NULL;
|
|
|
- ctx->comp_level = Z_DEFAULT_COMPRESSION;
|
|
|
- BIO_set_init(bi, 1);
|
|
|
- BIO_set_data(bi, ctx);
|
|
|
-
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-static int bio_zlib_free(BIO *bi)
|
|
|
-{
|
|
|
- BIO_ZLIB_CTX *ctx;
|
|
|
-
|
|
|
- if (!bi)
|
|
|
- return 0;
|
|
|
- ctx = BIO_get_data(bi);
|
|
|
- if (ctx->ibuf) {
|
|
|
- /* Destroy decompress context */
|
|
|
- inflateEnd(&ctx->zin);
|
|
|
- OPENSSL_free(ctx->ibuf);
|
|
|
- }
|
|
|
- if (ctx->obuf) {
|
|
|
- /* Destroy compress context */
|
|
|
- deflateEnd(&ctx->zout);
|
|
|
- OPENSSL_free(ctx->obuf);
|
|
|
- }
|
|
|
- OPENSSL_free(ctx);
|
|
|
- BIO_set_data(bi, NULL);
|
|
|
- BIO_set_init(bi, 0);
|
|
|
-
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-static int bio_zlib_read(BIO *b, char *out, int outl)
|
|
|
-{
|
|
|
- BIO_ZLIB_CTX *ctx;
|
|
|
- int ret;
|
|
|
- z_stream *zin;
|
|
|
- BIO *next = BIO_next(b);
|
|
|
-
|
|
|
- if (!out || !outl)
|
|
|
- return 0;
|
|
|
- ctx = BIO_get_data(b);
|
|
|
- zin = &ctx->zin;
|
|
|
- BIO_clear_retry_flags(b);
|
|
|
- if (!ctx->ibuf) {
|
|
|
- ctx->ibuf = OPENSSL_malloc(ctx->ibufsize);
|
|
|
- if (ctx->ibuf == NULL)
|
|
|
- return 0;
|
|
|
- if ((ret = inflateInit(zin)) != Z_OK) {
|
|
|
- ERR_raise_data(ERR_LIB_COMP, COMP_R_ZLIB_INFLATE_ERROR,
|
|
|
- "zlib error: %s", zError(ret));
|
|
|
- return 0;
|
|
|
- }
|
|
|
- zin->next_in = ctx->ibuf;
|
|
|
- zin->avail_in = 0;
|
|
|
- }
|
|
|
-
|
|
|
- /* Copy output data directly to supplied buffer */
|
|
|
- zin->next_out = (unsigned char *)out;
|
|
|
- zin->avail_out = (unsigned int)outl;
|
|
|
- for (;;) {
|
|
|
- /* Decompress while data available */
|
|
|
- while (zin->avail_in) {
|
|
|
- ret = inflate(zin, 0);
|
|
|
- if ((ret != Z_OK) && (ret != Z_STREAM_END)) {
|
|
|
- ERR_raise_data(ERR_LIB_COMP, COMP_R_ZLIB_INFLATE_ERROR,
|
|
|
- "zlib error: %s", zError(ret));
|
|
|
- return 0;
|
|
|
- }
|
|
|
- /* If EOF or we've read everything then return */
|
|
|
- if ((ret == Z_STREAM_END) || !zin->avail_out)
|
|
|
- return outl - zin->avail_out;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * No data in input buffer try to read some in, if an error then
|
|
|
- * return the total data read.
|
|
|
- */
|
|
|
- ret = BIO_read(next, ctx->ibuf, ctx->ibufsize);
|
|
|
- if (ret <= 0) {
|
|
|
- /* Total data read */
|
|
|
- int tot = outl - zin->avail_out;
|
|
|
- BIO_copy_next_retry(b);
|
|
|
- if (ret < 0)
|
|
|
- return (tot > 0) ? tot : ret;
|
|
|
- return tot;
|
|
|
- }
|
|
|
- zin->avail_in = ret;
|
|
|
- zin->next_in = ctx->ibuf;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int bio_zlib_write(BIO *b, const char *in, int inl)
|
|
|
-{
|
|
|
- BIO_ZLIB_CTX *ctx;
|
|
|
- int ret;
|
|
|
- z_stream *zout;
|
|
|
- BIO *next = BIO_next(b);
|
|
|
-
|
|
|
- if (!in || !inl)
|
|
|
- return 0;
|
|
|
- ctx = BIO_get_data(b);
|
|
|
- if (ctx->odone)
|
|
|
- return 0;
|
|
|
- zout = &ctx->zout;
|
|
|
- BIO_clear_retry_flags(b);
|
|
|
- if (!ctx->obuf) {
|
|
|
- ctx->obuf = OPENSSL_malloc(ctx->obufsize);
|
|
|
- /* Need error here */
|
|
|
- if (ctx->obuf == NULL)
|
|
|
- return 0;
|
|
|
- ctx->optr = ctx->obuf;
|
|
|
- ctx->ocount = 0;
|
|
|
- if ((ret = deflateInit(zout, ctx->comp_level)) != Z_OK) {
|
|
|
- ERR_raise_data(ERR_LIB_COMP, COMP_R_ZLIB_DEFLATE_ERROR,
|
|
|
- "zlib error: %s", zError(ret));
|
|
|
- return 0;
|
|
|
- }
|
|
|
- zout->next_out = ctx->obuf;
|
|
|
- zout->avail_out = ctx->obufsize;
|
|
|
- }
|
|
|
- /* Obtain input data directly from supplied buffer */
|
|
|
- zout->next_in = (void *)in;
|
|
|
- zout->avail_in = inl;
|
|
|
- for (;;) {
|
|
|
- /* If data in output buffer write it first */
|
|
|
- while (ctx->ocount) {
|
|
|
- ret = BIO_write(next, ctx->optr, ctx->ocount);
|
|
|
- if (ret <= 0) {
|
|
|
- /* Total data written */
|
|
|
- int tot = inl - zout->avail_in;
|
|
|
- BIO_copy_next_retry(b);
|
|
|
- if (ret < 0)
|
|
|
- return (tot > 0) ? tot : ret;
|
|
|
- return tot;
|
|
|
- }
|
|
|
- ctx->optr += ret;
|
|
|
- ctx->ocount -= ret;
|
|
|
- }
|
|
|
-
|
|
|
- /* Have we consumed all supplied data? */
|
|
|
- if (!zout->avail_in)
|
|
|
- return inl;
|
|
|
-
|
|
|
- /* Compress some more */
|
|
|
-
|
|
|
- /* Reset buffer */
|
|
|
- ctx->optr = ctx->obuf;
|
|
|
- zout->next_out = ctx->obuf;
|
|
|
- zout->avail_out = ctx->obufsize;
|
|
|
- /* Compress some more */
|
|
|
- ret = deflate(zout, 0);
|
|
|
- if (ret != Z_OK) {
|
|
|
- ERR_raise_data(ERR_LIB_COMP, COMP_R_ZLIB_DEFLATE_ERROR,
|
|
|
- "zlib error: %s", zError(ret));
|
|
|
- return 0;
|
|
|
- }
|
|
|
- ctx->ocount = ctx->obufsize - zout->avail_out;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int bio_zlib_flush(BIO *b)
|
|
|
-{
|
|
|
- BIO_ZLIB_CTX *ctx;
|
|
|
- int ret;
|
|
|
- z_stream *zout;
|
|
|
- BIO *next = BIO_next(b);
|
|
|
-
|
|
|
- ctx = BIO_get_data(b);
|
|
|
- /* If no data written or already flush show success */
|
|
|
- if (!ctx->obuf || (ctx->odone && !ctx->ocount))
|
|
|
- return 1;
|
|
|
- zout = &ctx->zout;
|
|
|
- BIO_clear_retry_flags(b);
|
|
|
- /* No more input data */
|
|
|
- zout->next_in = NULL;
|
|
|
- zout->avail_in = 0;
|
|
|
- for (;;) {
|
|
|
- /* If data in output buffer write it first */
|
|
|
- while (ctx->ocount) {
|
|
|
- ret = BIO_write(next, ctx->optr, ctx->ocount);
|
|
|
- if (ret <= 0) {
|
|
|
- BIO_copy_next_retry(b);
|
|
|
- return ret;
|
|
|
- }
|
|
|
- ctx->optr += ret;
|
|
|
- ctx->ocount -= ret;
|
|
|
- }
|
|
|
- if (ctx->odone)
|
|
|
- return 1;
|
|
|
-
|
|
|
- /* Compress some more */
|
|
|
-
|
|
|
- /* Reset buffer */
|
|
|
- ctx->optr = ctx->obuf;
|
|
|
- zout->next_out = ctx->obuf;
|
|
|
- zout->avail_out = ctx->obufsize;
|
|
|
- /* Compress some more */
|
|
|
- ret = deflate(zout, Z_FINISH);
|
|
|
- if (ret == Z_STREAM_END)
|
|
|
- ctx->odone = 1;
|
|
|
- else if (ret != Z_OK) {
|
|
|
- ERR_raise_data(ERR_LIB_COMP, COMP_R_ZLIB_DEFLATE_ERROR,
|
|
|
- "zlib error: %s", zError(ret));
|
|
|
- return 0;
|
|
|
- }
|
|
|
- ctx->ocount = ctx->obufsize - zout->avail_out;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static long bio_zlib_ctrl(BIO *b, int cmd, long num, void *ptr)
|
|
|
-{
|
|
|
- BIO_ZLIB_CTX *ctx;
|
|
|
- int ret, *ip;
|
|
|
- int ibs, obs;
|
|
|
- BIO *next = BIO_next(b);
|
|
|
-
|
|
|
- if (next == NULL)
|
|
|
- return 0;
|
|
|
- ctx = BIO_get_data(b);
|
|
|
- switch (cmd) {
|
|
|
-
|
|
|
- case BIO_CTRL_RESET:
|
|
|
- ctx->ocount = 0;
|
|
|
- ctx->odone = 0;
|
|
|
- ret = 1;
|
|
|
- break;
|
|
|
-
|
|
|
- case BIO_CTRL_FLUSH:
|
|
|
- ret = bio_zlib_flush(b);
|
|
|
- if (ret > 0) {
|
|
|
- ret = BIO_flush(next);
|
|
|
- BIO_copy_next_retry(b);
|
|
|
- }
|
|
|
- break;
|
|
|
-
|
|
|
- case BIO_C_SET_BUFF_SIZE:
|
|
|
- ibs = -1;
|
|
|
- obs = -1;
|
|
|
- if (ptr != NULL) {
|
|
|
- ip = ptr;
|
|
|
- if (*ip == 0)
|
|
|
- ibs = (int)num;
|
|
|
- else
|
|
|
- obs = (int)num;
|
|
|
- } else {
|
|
|
- ibs = (int)num;
|
|
|
- obs = ibs;
|
|
|
- }
|
|
|
-
|
|
|
- if (ibs != -1) {
|
|
|
- OPENSSL_free(ctx->ibuf);
|
|
|
- ctx->ibuf = NULL;
|
|
|
- ctx->ibufsize = ibs;
|
|
|
- }
|
|
|
-
|
|
|
- if (obs != -1) {
|
|
|
- OPENSSL_free(ctx->obuf);
|
|
|
- ctx->obuf = NULL;
|
|
|
- ctx->obufsize = obs;
|
|
|
- }
|
|
|
- ret = 1;
|
|
|
- break;
|
|
|
-
|
|
|
- case BIO_C_DO_STATE_MACHINE:
|
|
|
- BIO_clear_retry_flags(b);
|
|
|
- ret = BIO_ctrl(next, cmd, num, ptr);
|
|
|
- BIO_copy_next_retry(b);
|
|
|
- break;
|
|
|
-
|
|
|
- case BIO_CTRL_WPENDING:
|
|
|
- if (ctx->obuf == NULL)
|
|
|
- return 0;
|
|
|
-
|
|
|
- if (ctx->odone) {
|
|
|
- ret = ctx->ocount;
|
|
|
- } else {
|
|
|
- ret = ctx->ocount;
|
|
|
- if (ret == 0)
|
|
|
- /* Unknown amount pending but we are not finished */
|
|
|
- ret = 1;
|
|
|
- }
|
|
|
- if (ret == 0)
|
|
|
- ret = BIO_ctrl(next, cmd, num, ptr);
|
|
|
- break;
|
|
|
-
|
|
|
- case BIO_CTRL_PENDING:
|
|
|
- ret = ctx->zin.avail_in;
|
|
|
- if (ret == 0)
|
|
|
- ret = BIO_ctrl(next, cmd, num, ptr);
|
|
|
- break;
|
|
|
-
|
|
|
- default:
|
|
|
- ret = BIO_ctrl(next, cmd, num, ptr);
|
|
|
- break;
|
|
|
-
|
|
|
- }
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-static long bio_zlib_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
|
|
|
-{
|
|
|
- BIO *next = BIO_next(b);
|
|
|
-
|
|
|
- if (next == NULL)
|
|
|
- return 0;
|
|
|
- return BIO_callback_ctrl(next, cmd, fp);
|
|
|
-}
|
|
|
-
|
|
|
-#endif
|
Martin Prikryl