diff options
Diffstat (limited to 'openssl/trunk/crypto/comp/c_zlib.c')
| -rw-r--r-- | openssl/trunk/crypto/comp/c_zlib.c | 387 |
1 files changed, 0 insertions, 387 deletions
diff --git a/openssl/trunk/crypto/comp/c_zlib.c b/openssl/trunk/crypto/comp/c_zlib.c deleted file mode 100644 index 941b807e..00000000 --- a/openssl/trunk/crypto/comp/c_zlib.c +++ /dev/null @@ -1,387 +0,0 @@ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <openssl/objects.h> -#include <openssl/comp.h> -#include <openssl/err.h> - -COMP_METHOD *COMP_zlib(void ); - -static COMP_METHOD zlib_method_nozlib={ - NID_undef, - "(undef)", - NULL, - 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, - unsigned int olen, unsigned char *in, unsigned int ilen); - -static int zz_uncompress(Bytef *dest, uLongf *destLen, const Bytef *source, - uLong sourceLen); - -static COMP_METHOD zlib_stateless_method={ - NID_zlib_compression, - LN_zlib_compression, - NULL, - 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, - }; - -/* - * 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; - int clear=1; - - if (ilen > 128) - { - out[0]=1; - l=olen-1; - i=compress(&(out[1]),&l,in,(unsigned long)ilen); - if (i != Z_OK) - return(-1); - if (ilen > l) - { - clear=0; - l++; - } - } - if (clear) - { - out[0]=0; - memcpy(&(out[1]),in,ilen); - l=ilen+1; - } -#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(COMP_CTX *ctx, unsigned char *out, - unsigned int olen, unsigned char *in, unsigned int ilen) - { - unsigned long l; - int i; - - if (in[0]) - { - l=olen; - i=zz_uncompress(out,&l,&(in[1]),(unsigned long)ilen-1); - if (i != Z_OK) - return(-1); - } - else - { - memcpy(out,&(in[1]),ilen-1); - l=ilen-1; - } -#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 (Bytef *dest, uLongf *destLen, const Bytef *source, - uLong sourceLen) -{ - z_stream stream; - int err; - - stream.next_in = (Bytef*)source; - stream.avail_in = (uInt)sourceLen; - /* Check for source > 64K on 16-bit machine: */ - if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; - - stream.next_out = dest; - stream.avail_out = (uInt)*destLen; - if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; - - stream.zalloc = (alloc_func)0; - stream.zfree = (free_func)0; - - err = inflateInit_(&stream, - ZLIB_VERSION, sizeof(z_stream)); - if (err != Z_OK) return err; - - err = inflate(&stream, Z_FINISH); - if (err != Z_STREAM_END) { - inflateEnd(&stream); - return err; - } - *destLen = stream.total_out; - - err = inflateEnd(&stream); - return err; -} -#endif - -#endif - -COMP_METHOD *COMP_zlib(void) - { - 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); - } - |