#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include "objects.h"
-#include "comp.h"
+#include <openssl/objects.h>
+#include <openssl/comp.h>
+#include <openssl/err.h>
COMP_METHOD *COMP_zlib(void );
-#ifndef ZLIB
-
-static COMP_METHOD zlib_method={
+static COMP_METHOD zlib_method_nozlib={
NID_undef,
- "(null)",
+ "(undef)",
+ NULL,
NULL,
NULL,
NULL,
NULL,
};
+#ifndef ZLIB
+#undef ZLIB_SHARED
#else
#include <zlib.h>
+static int zlib_stateful_init(COMP_CTX *ctx);
+static void zlib_stateful_finish(COMP_CTX *ctx);
+static int zlib_stateful_compress_block(COMP_CTX *ctx, unsigned char *out,
+ unsigned int olen, unsigned char *in, unsigned int ilen);
+static int zlib_stateful_expand_block(COMP_CTX *ctx, unsigned char *out,
+ unsigned int olen, unsigned char *in, unsigned int ilen);
+
+#if 0
static int zlib_compress_block(COMP_CTX *ctx, unsigned char *out,
unsigned int olen, unsigned char *in, unsigned int ilen);
static int zlib_expand_block(COMP_CTX *ctx, unsigned char *out,
static int zz_uncompress(Bytef *dest, uLongf *destLen, const Bytef *source,
uLong sourceLen);
-static COMP_METHOD zlib_method={
+static COMP_METHOD zlib_stateless_method={
NID_zlib_compression,
LN_zlib_compression,
NULL,
zlib_compress_block,
zlib_expand_block,
NULL,
+ NULL,
+ };
+#endif
+
+static COMP_METHOD zlib_stateful_method={
+ NID_zlib_compression,
+ LN_zlib_compression,
+ zlib_stateful_init,
+ zlib_stateful_finish,
+ zlib_stateful_compress_block,
+ zlib_stateful_expand_block,
+ NULL,
+ NULL,
};
-static int zlib_compress_block(ctx,out,olen,in,ilen)
-COMP_CTX *ctx;
-unsigned char *out;
-unsigned int olen;
-unsigned char *in;
-unsigned int ilen;
+/*
+ * When OpenSSL is built on Windows, we do not want to require that
+ * the ZLIB.DLL be available in order for the OpenSSL DLLs to
+ * work. Therefore, all ZLIB routines are loaded at run time
+ * and we do not link to a .LIB file when ZLIB_SHARED is set.
+ */
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
+# include <windows.h>
+#endif /* !(OPENSSL_SYS_WINDOWS || OPENSSL_SYS_WIN32) */
+
+#ifdef ZLIB_SHARED
+#include <openssl/dso.h>
+
+/* Function pointers */
+typedef int (*compress_ft)(Bytef *dest,uLongf *destLen,
+ const Bytef *source, uLong sourceLen);
+typedef int (*inflateEnd_ft)(z_streamp strm);
+typedef int (*inflate_ft)(z_streamp strm, int flush);
+typedef int (*inflateInit__ft)(z_streamp strm,
+ const char * version, int stream_size);
+typedef int (*deflateEnd_ft)(z_streamp strm);
+typedef int (*deflate_ft)(z_streamp strm, int flush);
+typedef int (*deflateInit__ft)(z_streamp strm, int level,
+ const char * version, int stream_size);
+static compress_ft p_compress=NULL;
+static inflateEnd_ft p_inflateEnd=NULL;
+static inflate_ft p_inflate=NULL;
+static inflateInit__ft p_inflateInit_=NULL;
+static deflateEnd_ft p_deflateEnd=NULL;
+static deflate_ft p_deflate=NULL;
+static deflateInit__ft p_deflateInit_=NULL;
+
+static int zlib_loaded = 0; /* only attempt to init func pts once */
+static DSO *zlib_dso = NULL;
+
+#define compress p_compress
+#define inflateEnd p_inflateEnd
+#define inflate p_inflate
+#define inflateInit_ p_inflateInit_
+#define deflateEnd p_deflateEnd
+#define deflate p_deflate
+#define deflateInit_ p_deflateInit_
+#endif /* ZLIB_SHARED */
+
+struct zlib_state
+ {
+ z_stream istream;
+ z_stream ostream;
+ };
+
+static int zlib_stateful_ex_idx = -1;
+
+static void zlib_stateful_free_ex_data(void *obj, void *item,
+ CRYPTO_EX_DATA *ad, int ind,long argl, void *argp)
+ {
+ struct zlib_state *state = (struct zlib_state *)item;
+ inflateEnd(&state->istream);
+ deflateEnd(&state->ostream);
+ OPENSSL_free(state);
+ }
+
+static int zlib_stateful_init(COMP_CTX *ctx)
+ {
+ int err;
+ struct zlib_state *state =
+ (struct zlib_state *)OPENSSL_malloc(sizeof(struct zlib_state));
+
+ if (state == NULL)
+ goto err;
+
+ state->istream.zalloc = Z_NULL;
+ state->istream.zfree = Z_NULL;
+ state->istream.opaque = Z_NULL;
+ state->istream.next_in = Z_NULL;
+ state->istream.next_out = Z_NULL;
+ state->istream.avail_in = 0;
+ state->istream.avail_out = 0;
+ err = inflateInit_(&state->istream,
+ ZLIB_VERSION, sizeof(z_stream));
+ if (err != Z_OK)
+ goto err;
+
+ state->ostream.zalloc = Z_NULL;
+ state->ostream.zfree = Z_NULL;
+ state->ostream.opaque = Z_NULL;
+ state->ostream.next_in = Z_NULL;
+ state->ostream.next_out = Z_NULL;
+ state->ostream.avail_in = 0;
+ state->ostream.avail_out = 0;
+ err = deflateInit_(&state->ostream,Z_DEFAULT_COMPRESSION,
+ ZLIB_VERSION, sizeof(z_stream));
+ if (err != Z_OK)
+ goto err;
+
+ CRYPTO_new_ex_data(CRYPTO_EX_INDEX_COMP,ctx,&ctx->ex_data);
+ if (zlib_stateful_ex_idx == -1)
+ {
+ CRYPTO_w_lock(CRYPTO_LOCK_COMP);
+ if (zlib_stateful_ex_idx == -1)
+ zlib_stateful_ex_idx =
+ CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_COMP,
+ 0,NULL,NULL,NULL,zlib_stateful_free_ex_data);
+ CRYPTO_w_unlock(CRYPTO_LOCK_COMP);
+ if (zlib_stateful_ex_idx == -1)
+ goto err;
+ }
+ CRYPTO_set_ex_data(&ctx->ex_data,zlib_stateful_ex_idx,state);
+ return 1;
+ err:
+ if (state) OPENSSL_free(state);
+ return 0;
+ }
+
+static void zlib_stateful_finish(COMP_CTX *ctx)
+ {
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_COMP,ctx,&ctx->ex_data);
+ }
+
+static int zlib_stateful_compress_block(COMP_CTX *ctx, unsigned char *out,
+ unsigned int olen, unsigned char *in, unsigned int ilen)
+ {
+ int err = Z_OK;
+ struct zlib_state *state =
+ (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data,
+ zlib_stateful_ex_idx);
+
+ if (state == NULL)
+ return -1;
+
+ state->ostream.next_in = in;
+ state->ostream.avail_in = ilen;
+ state->ostream.next_out = out;
+ state->ostream.avail_out = olen;
+ if (ilen > 0)
+ err = deflate(&state->ostream, Z_SYNC_FLUSH);
+ if (err != Z_OK)
+ return -1;
+#ifdef DEBUG_ZLIB
+ fprintf(stderr,"compress(%4d)->%4d %s\n",
+ ilen,olen - state->ostream.avail_out,
+ (ilen != olen - state->ostream.avail_out)?"zlib":"clear");
+#endif
+ return olen - state->ostream.avail_out;
+ }
+
+static int zlib_stateful_expand_block(COMP_CTX *ctx, unsigned char *out,
+ unsigned int olen, unsigned char *in, unsigned int ilen)
+ {
+ int err = Z_OK;
+
+ struct zlib_state *state =
+ (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data,
+ zlib_stateful_ex_idx);
+
+ if (state == NULL)
+ return 0;
+
+ state->istream.next_in = in;
+ state->istream.avail_in = ilen;
+ state->istream.next_out = out;
+ state->istream.avail_out = olen;
+ if (ilen > 0)
+ err = inflate(&state->istream, Z_SYNC_FLUSH);
+ if (err != Z_OK)
+ return -1;
+#ifdef DEBUG_ZLIB
+ fprintf(stderr,"expand(%4d)->%4d %s\n",
+ ilen,olen - state->istream.avail_out,
+ (ilen != olen - state->istream.avail_out)?"zlib":"clear");
+#endif
+ return olen - state->istream.avail_out;
+ }
+
+#if 0
+static int zlib_compress_block(COMP_CTX *ctx, unsigned char *out,
+ unsigned int olen, unsigned char *in, unsigned int ilen)
{
unsigned long l;
int i;
memcpy(&(out[1]),in,ilen);
l=ilen+1;
}
-fprintf(stderr,"compress(%4d)->%4d %s\n",ilen,(int)l,(clear)?"clear":"zlib");
+#ifdef DEBUG_ZLIB
+ fprintf(stderr,"compress(%4d)->%4d %s\n",
+ ilen,(int)l,(clear)?"clear":"zlib");
+#endif
return((int)l);
}
-static int zlib_expand_block(ctx,out,olen,in,ilen)
-COMP_CTX *ctx;
-unsigned char *out;
-unsigned int olen;
-unsigned char *in;
-unsigned int ilen;
+static int zlib_expand_block(COMP_CTX *ctx, unsigned char *out,
+ unsigned int olen, unsigned char *in, unsigned int ilen)
{
unsigned long l;
int i;
memcpy(out,&(in[1]),ilen-1);
l=ilen-1;
}
- fprintf(stderr,"expand (%4d)->%4d %s\n",ilen,(int)l,in[0]?"zlib":"clear");
+#ifdef DEBUG_ZLIB
+ fprintf(stderr,"expand (%4d)->%4d %s\n",
+ ilen,(int)l,in[0]?"zlib":"clear");
+#endif
return((int)l);
}
-static int zz_uncompress (dest, destLen, source, sourceLen)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
+static int zz_uncompress (Bytef *dest, uLongf *destLen, const Bytef *source,
+ uLong sourceLen)
{
z_stream stream;
int err;
stream.zalloc = (alloc_func)0;
stream.zfree = (free_func)0;
- err = inflateInit(&stream);
+ err = inflateInit_(&stream,
+ ZLIB_VERSION, sizeof(z_stream));
if (err != Z_OK) return err;
err = inflate(&stream, Z_FINISH);
err = inflateEnd(&stream);
return err;
}
+#endif
#endif
-COMP_METHOD *COMP_zlib()
+COMP_METHOD *COMP_zlib(void)
{
- return(&zlib_method);
+ COMP_METHOD *meth = &zlib_method_nozlib;
+
+#ifdef ZLIB_SHARED
+ if (!zlib_loaded)
+ {
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
+ zlib_dso = DSO_load(NULL, "ZLIB1", NULL, 0);
+#else
+ zlib_dso = DSO_load(NULL, "z", NULL, 0);
+#endif
+ if (zlib_dso != NULL)
+ {
+ p_compress
+ = (compress_ft) DSO_bind_func(zlib_dso,
+ "compress");
+ p_inflateEnd
+ = (inflateEnd_ft) DSO_bind_func(zlib_dso,
+ "inflateEnd");
+ p_inflate
+ = (inflate_ft) DSO_bind_func(zlib_dso,
+ "inflate");
+ p_inflateInit_
+ = (inflateInit__ft) DSO_bind_func(zlib_dso,
+ "inflateInit_");
+ p_deflateEnd
+ = (deflateEnd_ft) DSO_bind_func(zlib_dso,
+ "deflateEnd");
+ p_deflate
+ = (deflate_ft) DSO_bind_func(zlib_dso,
+ "deflate");
+ p_deflateInit_
+ = (deflateInit__ft) DSO_bind_func(zlib_dso,
+ "deflateInit_");
+
+ if (p_compress && p_inflateEnd && p_inflate
+ && p_inflateInit_ && p_deflateEnd
+ && p_deflate && p_deflateInit_)
+ zlib_loaded++;
+ }
+ }
+
+#endif
+#ifdef ZLIB_SHARED
+ if (zlib_loaded)
+#endif
+#if defined(ZLIB) || defined(ZLIB_SHARED)
+ meth = &zlib_stateful_method;
+#endif
+
+ return(meth);
}
projects / openssl.git / blobdiff