diff options
Diffstat (limited to 'openssl/crypto/comp/c_zlib.c')
| -rw-r--r-- | openssl/crypto/comp/c_zlib.c | 799 |
1 files changed, 0 insertions, 799 deletions
diff --git a/openssl/crypto/comp/c_zlib.c b/openssl/crypto/comp/c_zlib.c deleted file mode 100644 index 8adf35f3..00000000 --- a/openssl/crypto/comp/c_zlib.c +++ /dev/null @@ -1,799 +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); - - -/* memory allocations functions for zlib intialization */ -static void* zlib_zalloc(void* opaque, unsigned int no, unsigned int size) -{ - void *p; - - p=OPENSSL_malloc(no*size); - if (p) - memset(p, 0, no*size); - return p; -} - - -static void zlib_zfree(void* opaque, void* address) -{ - OPENSSL_free(address); -} - -#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); -typedef const char * (*zError__ft)(int err); -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 zError__ft p_zError=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_ -#define zError p_zError -#endif /* ZLIB_SHARED */ - -struct zlib_state - { - z_stream istream; - z_stream ostream; - }; - -static int zlib_stateful_ex_idx = -1; - -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 = zlib_zalloc; - state->istream.zfree = zlib_zfree; - 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 = zlib_zalloc; - state->ostream.zfree = zlib_zfree; - 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); - 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) - { - struct zlib_state *state = - (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data, - zlib_stateful_ex_idx); - inflateEnd(&state->istream); - deflateEnd(&state->ostream); - OPENSSL_free(state); - 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_"); - p_zError - = (zError__ft) DSO_bind_func(zlib_dso, - "zError"); - - if (p_compress && p_inflateEnd && p_inflate - && p_inflateInit_ && p_deflateEnd - && p_deflate && p_deflateInit_ && p_zError) - zlib_loaded++; - } - } - -#endif -#ifdef ZLIB_SHARED - if (zlib_loaded) -#endif -#if defined(ZLIB) || defined(ZLIB_SHARED) - { - /* init zlib_stateful_ex_idx here so that in a multi-process - * application it's enough to intialize openssl before forking - * (idx will be inherited in all the children) */ - 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,NULL); - CRYPTO_w_unlock(CRYPTO_LOCK_COMP); - if (zlib_stateful_ex_idx == -1) - goto err; - } - - meth = &zlib_stateful_method; - } -err: -#endif - - return(meth); - } - -void COMP_zlib_cleanup(void) - { -#ifdef ZLIB_SHARED - if (zlib_dso) - DSO_free(zlib_dso); -#endif - } - -#ifdef ZLIB - -/* Zlib based compression/decompression filter BIO */ - -typedef struct - { - unsigned char *ibuf; /* Input buffer */ - int ibufsize; /* Buffer size */ - z_stream zin; /* Input decompress context */ - unsigned char *obuf; /* Output buffer */ - int obufsize; /* Output buffer size */ - unsigned char *optr; /* Position in output buffer */ - int ocount; /* Amount of data in output buffer */ - int odone; /* deflate EOF */ - int comp_level; /* Compression level to use */ - z_stream zout; /* Output compression context */ - } BIO_ZLIB_CTX; - -#define ZLIB_DEFAULT_BUFSIZE 1024 - -static int bio_zlib_new(BIO *bi); -static int bio_zlib_free(BIO *bi); -static int bio_zlib_read(BIO *b, char *out, int outl); -static int bio_zlib_write(BIO *b, const char *in, int inl); -static long bio_zlib_ctrl(BIO *b, int cmd, long num, void *ptr); -static long bio_zlib_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp); - -static BIO_METHOD bio_meth_zlib = - { - BIO_TYPE_COMP, - "zlib", - bio_zlib_write, - bio_zlib_read, - NULL, - NULL, - bio_zlib_ctrl, - bio_zlib_new, - bio_zlib_free, - bio_zlib_callback_ctrl - }; - -BIO_METHOD *BIO_f_zlib(void) - { - return &bio_meth_zlib; - } - - -static int bio_zlib_new(BIO *bi) - { - BIO_ZLIB_CTX *ctx; -#ifdef ZLIB_SHARED - (void)COMP_zlib(); - if (!zlib_loaded) - { - COMPerr(COMP_F_BIO_ZLIB_NEW, COMP_R_ZLIB_NOT_SUPPORTED); - return 0; - } -#endif - ctx = OPENSSL_malloc(sizeof(BIO_ZLIB_CTX)); - if(!ctx) - { - COMPerr(COMP_F_BIO_ZLIB_NEW, ERR_R_MALLOC_FAILURE); - return 0; - } - ctx->ibuf = NULL; - ctx->obuf = NULL; - ctx->ibufsize = ZLIB_DEFAULT_BUFSIZE; - ctx->obufsize = ZLIB_DEFAULT_BUFSIZE; - ctx->zin.zalloc = Z_NULL; - ctx->zin.zfree = Z_NULL; - ctx->zin.next_in = NULL; - ctx->zin.avail_in = 0; - ctx->zin.next_out = NULL; - ctx->zin.avail_out = 0; - ctx->zout.zalloc = Z_NULL; - ctx->zout.zfree = Z_NULL; - ctx->zout.next_in = NULL; - ctx->zout.avail_in = 0; - ctx->zout.next_out = NULL; - ctx->zout.avail_out = 0; - ctx->odone = 0; - ctx->comp_level = Z_DEFAULT_COMPRESSION; - bi->init = 1; - bi->ptr = (char *)ctx; - bi->flags = 0; - return 1; - } - -static int bio_zlib_free(BIO *bi) - { - BIO_ZLIB_CTX *ctx; - if(!bi) return 0; - ctx = (BIO_ZLIB_CTX *)bi->ptr; - 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); - bi->ptr = NULL; - bi->init = 0; - bi->flags = 0; - return 1; - } - -static int bio_zlib_read(BIO *b, char *out, int outl) - { - BIO_ZLIB_CTX *ctx; - int ret; - z_stream *zin; - if(!out || !outl) return 0; - ctx = (BIO_ZLIB_CTX *)b->ptr; - zin = &ctx->zin; - BIO_clear_retry_flags(b); - if(!ctx->ibuf) - { - ctx->ibuf = OPENSSL_malloc(ctx->ibufsize); - if(!ctx->ibuf) - { - COMPerr(COMP_F_BIO_ZLIB_READ, ERR_R_MALLOC_FAILURE); - return 0; - } - inflateInit(zin); - 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)) - { - COMPerr(COMP_F_BIO_ZLIB_READ, - COMP_R_ZLIB_INFLATE_ERROR); - ERR_add_error_data(2, "zlib error:", - 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(b->next_bio, 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; - if(!in || !inl) return 0; - ctx = (BIO_ZLIB_CTX *)b->ptr; - 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) - { - COMPerr(COMP_F_BIO_ZLIB_WRITE, ERR_R_MALLOC_FAILURE); - return 0; - } - ctx->optr = ctx->obuf; - ctx->ocount = 0; - deflateInit(zout, ctx->comp_level); - 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(b->next_bio, 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) - { - COMPerr(COMP_F_BIO_ZLIB_WRITE, - COMP_R_ZLIB_DEFLATE_ERROR); - ERR_add_error_data(2, "zlib error:", 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; - ctx = (BIO_ZLIB_CTX *)b->ptr; - /* 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(b->next_bio, 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) - { - COMPerr(COMP_F_BIO_ZLIB_FLUSH, - COMP_R_ZLIB_DEFLATE_ERROR); - ERR_add_error_data(2, "zlib error:", 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; - if(!b->next_bio) return 0; - ctx = (BIO_ZLIB_CTX *)b->ptr; - 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(b->next_bio); - 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) - { - if (ctx->ibuf) - { - OPENSSL_free(ctx->ibuf); - ctx->ibuf = NULL; - } - ctx->ibufsize = ibs; - } - - if (obs != -1) - { - if (ctx->obuf) - { - 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(b->next_bio, cmd, num, ptr); - BIO_copy_next_retry(b); - break; - - default: - ret = BIO_ctrl(b->next_bio, cmd, num, ptr); - break; - - } - - return ret; - } - - -static long bio_zlib_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp) - { - if(!b->next_bio) - return 0; - return - BIO_callback_ctrl(b->next_bio, cmd, fp); - } - -#endif |