ref: 4410517b44fd2610abe0dcd1349bb3e6b3c5ddb8
dir: /sys/src/ape/lib/openssl/crypto/dso/dso_win32.c/
/* dso_win32.c -*- mode:C; c-file-style: "eay" -*- */
/* Written by Geoff Thorpe ([email protected]) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* [email protected].
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
#include <stdio.h>
#include <string.h>
#include "cryptlib.h"
#include <openssl/dso.h>
#if !defined(DSO_WIN32)
DSO_METHOD *DSO_METHOD_win32(void)
{
return NULL;
}
#else
#ifdef _WIN32_WCE
# if _WIN32_WCE < 300
static FARPROC GetProcAddressA(HMODULE hModule,LPCSTR lpProcName)
{
WCHAR lpProcNameW[64];
int i;
for (i=0;lpProcName[i] && i<64;i++)
lpProcNameW[i] = (WCHAR)lpProcName[i];
if (i==64) return NULL;
lpProcNameW[i] = 0;
return GetProcAddressW(hModule,lpProcNameW);
}
# endif
# undef GetProcAddress
# define GetProcAddress GetProcAddressA
static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
{
WCHAR *fnamw;
size_t len_0=strlen(lpLibFileName)+1,i;
#ifdef _MSC_VER
fnamw = (WCHAR *)_alloca (len_0*sizeof(WCHAR));
#else
fnamw = (WCHAR *)alloca (len_0*sizeof(WCHAR));
#endif
if (fnamw == NULL) return NULL;
#if defined(_WIN32_WCE) && _WIN32_WCE>=101
if (!MultiByteToWideChar(CP_ACP,0,lpLibFileName,len_0,fnamw,len_0))
#endif
for (i=0;i<len_0;i++) fnamw[i]=(WCHAR)lpLibFileName[i];
return LoadLibraryW(fnamw);
}
#endif
/* Part of the hack in "win32_load" ... */
#define DSO_MAX_TRANSLATED_SIZE 256
static int win32_load(DSO *dso);
static int win32_unload(DSO *dso);
static void *win32_bind_var(DSO *dso, const char *symname);
static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
#if 0
static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
static int win32_init(DSO *dso);
static int win32_finish(DSO *dso);
static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
#endif
static char *win32_name_converter(DSO *dso, const char *filename);
static char *win32_merger(DSO *dso, const char *filespec1,
const char *filespec2);
static const char *openssl_strnchr(const char *string, int c, size_t len);
static DSO_METHOD dso_meth_win32 = {
"OpenSSL 'win32' shared library method",
win32_load,
win32_unload,
win32_bind_var,
win32_bind_func,
/* For now, "unbind" doesn't exist */
#if 0
NULL, /* unbind_var */
NULL, /* unbind_func */
#endif
NULL, /* ctrl */
win32_name_converter,
win32_merger,
NULL, /* init */
NULL /* finish */
};
DSO_METHOD *DSO_METHOD_win32(void)
{
return(&dso_meth_win32);
}
/* For this DSO_METHOD, our meth_data STACK will contain;
* (i) a pointer to the handle (HINSTANCE) returned from
* LoadLibrary(), and copied.
*/
static int win32_load(DSO *dso)
{
HINSTANCE h = NULL, *p = NULL;
/* See applicable comments from dso_dl.c */
char *filename = DSO_convert_filename(dso, NULL);
if(filename == NULL)
{
DSOerr(DSO_F_WIN32_LOAD,DSO_R_NO_FILENAME);
goto err;
}
h = LoadLibraryA(filename);
if(h == NULL)
{
DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED);
ERR_add_error_data(3, "filename(", filename, ")");
goto err;
}
p = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
if(p == NULL)
{
DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE);
goto err;
}
*p = h;
if(!sk_push(dso->meth_data, (char *)p))
{
DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR);
goto err;
}
/* Success */
dso->loaded_filename = filename;
return(1);
err:
/* Cleanup !*/
if(filename != NULL)
OPENSSL_free(filename);
if(p != NULL)
OPENSSL_free(p);
if(h != NULL)
FreeLibrary(h);
return(0);
}
static int win32_unload(DSO *dso)
{
HINSTANCE *p;
if(dso == NULL)
{
DSOerr(DSO_F_WIN32_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if(sk_num(dso->meth_data) < 1)
return(1);
p = (HINSTANCE *)sk_pop(dso->meth_data);
if(p == NULL)
{
DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_NULL_HANDLE);
return(0);
}
if(!FreeLibrary(*p))
{
DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_UNLOAD_FAILED);
/* We should push the value back onto the stack in
* case of a retry. */
sk_push(dso->meth_data, (char *)p);
return(0);
}
/* Cleanup */
OPENSSL_free(p);
return(1);
}
/* Using GetProcAddress for variables? TODO: Check this out in
* the Win32 API docs, there's probably a variant for variables. */
static void *win32_bind_var(DSO *dso, const char *symname)
{
HINSTANCE *ptr;
void *sym;
if((dso == NULL) || (symname == NULL))
{
DSOerr(DSO_F_WIN32_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if(sk_num(dso->meth_data) < 1)
{
DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_STACK_ERROR);
return(NULL);
}
ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
if(ptr == NULL)
{
DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_NULL_HANDLE);
return(NULL);
}
sym = GetProcAddress(*ptr, symname);
if(sym == NULL)
{
DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
ERR_add_error_data(3, "symname(", symname, ")");
return(NULL);
}
return(sym);
}
static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
{
HINSTANCE *ptr;
void *sym;
if((dso == NULL) || (symname == NULL))
{
DSOerr(DSO_F_WIN32_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if(sk_num(dso->meth_data) < 1)
{
DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_STACK_ERROR);
return(NULL);
}
ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
if(ptr == NULL)
{
DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_NULL_HANDLE);
return(NULL);
}
sym = GetProcAddress(*ptr, symname);
if(sym == NULL)
{
DSOerr(DSO_F_WIN32_BIND_FUNC,DSO_R_SYM_FAILURE);
ERR_add_error_data(3, "symname(", symname, ")");
return(NULL);
}
return((DSO_FUNC_TYPE)sym);
}
struct file_st
{
const char *node; int nodelen;
const char *device; int devicelen;
const char *predir; int predirlen;
const char *dir; int dirlen;
const char *file; int filelen;
};
static struct file_st *win32_splitter(DSO *dso, const char *filename,
int assume_last_is_dir)
{
struct file_st *result = NULL;
enum { IN_NODE, IN_DEVICE, IN_FILE } position;
const char *start = filename;
char last;
if (!filename)
{
DSOerr(DSO_F_WIN32_SPLITTER,DSO_R_NO_FILENAME);
/*goto err;*/
return(NULL);
}
result = OPENSSL_malloc(sizeof(struct file_st));
if(result == NULL)
{
DSOerr(DSO_F_WIN32_SPLITTER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
memset(result, 0, sizeof(struct file_st));
position = IN_DEVICE;
if(filename[0] == '\\' && filename[1] == '\\'
|| filename[0] == '/' && filename[1] == '/')
{
position = IN_NODE;
filename += 2;
start = filename;
result->node = start;
}
do
{
last = filename[0];
switch(last)
{
case ':':
if(position != IN_DEVICE)
{
DSOerr(DSO_F_WIN32_SPLITTER,
DSO_R_INCORRECT_FILE_SYNTAX);
/*goto err;*/
return(NULL);
}
result->device = start;
result->devicelen = filename - start;
position = IN_FILE;
start = ++filename;
result->dir = start;
break;
case '\\':
case '/':
if(position == IN_NODE)
{
result->nodelen = filename - start;
position = IN_FILE;
start = ++filename;
result->dir = start;
}
else if(position == IN_DEVICE)
{
position = IN_FILE;
filename++;
result->dir = start;
result->dirlen = filename - start;
start = filename;
}
else
{
filename++;
result->dirlen += filename - start;
start = filename;
}
break;
case '\0':
if(position == IN_NODE)
{
result->nodelen = filename - start;
}
else
{
if(filename - start > 0)
{
if (assume_last_is_dir)
{
if (position == IN_DEVICE)
{
result->dir = start;
result->dirlen = 0;
}
result->dirlen +=
filename - start;
}
else
{
result->file = start;
result->filelen =
filename - start;
}
}
}
break;
default:
filename++;
break;
}
}
while(last);
if(!result->nodelen) result->node = NULL;
if(!result->devicelen) result->device = NULL;
if(!result->dirlen) result->dir = NULL;
if(!result->filelen) result->file = NULL;
return(result);
}
static char *win32_joiner(DSO *dso, const struct file_st *file_split)
{
int len = 0, offset = 0;
char *result = NULL;
const char *start;
if(!file_split)
{
DSOerr(DSO_F_WIN32_JOINER,
ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if(file_split->node)
{
len += 2 + file_split->nodelen; /* 2 for starting \\ */
if(file_split->predir || file_split->dir || file_split->file)
len++; /* 1 for ending \ */
}
else if(file_split->device)
{
len += file_split->devicelen + 1; /* 1 for ending : */
}
len += file_split->predirlen;
if(file_split->predir && (file_split->dir || file_split->file))
{
len++; /* 1 for ending \ */
}
len += file_split->dirlen;
if(file_split->dir && file_split->file)
{
len++; /* 1 for ending \ */
}
len += file_split->filelen;
if(!len)
{
DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
return(NULL);
}
result = OPENSSL_malloc(len + 1);
if (!result)
{
DSOerr(DSO_F_WIN32_JOINER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
if(file_split->node)
{
strcpy(&result[offset], "\\\\"); offset += 2;
strncpy(&result[offset], file_split->node,
file_split->nodelen); offset += file_split->nodelen;
if(file_split->predir || file_split->dir || file_split->file)
{
result[offset] = '\\'; offset++;
}
}
else if(file_split->device)
{
strncpy(&result[offset], file_split->device,
file_split->devicelen); offset += file_split->devicelen;
result[offset] = ':'; offset++;
}
start = file_split->predir;
while(file_split->predirlen > (start - file_split->predir))
{
const char *end = openssl_strnchr(start, '/',
file_split->predirlen - (start - file_split->predir));
if(!end)
end = start
+ file_split->predirlen
- (start - file_split->predir);
strncpy(&result[offset], start,
end - start); offset += end - start;
result[offset] = '\\'; offset++;
start = end + 1;
}
#if 0 /* Not needed, since the directory converter above already appeneded
a backslash */
if(file_split->predir && (file_split->dir || file_split->file))
{
result[offset] = '\\'; offset++;
}
#endif
start = file_split->dir;
while(file_split->dirlen > (start - file_split->dir))
{
const char *end = openssl_strnchr(start, '/',
file_split->dirlen - (start - file_split->dir));
if(!end)
end = start
+ file_split->dirlen
- (start - file_split->dir);
strncpy(&result[offset], start,
end - start); offset += end - start;
result[offset] = '\\'; offset++;
start = end + 1;
}
#if 0 /* Not needed, since the directory converter above already appeneded
a backslash */
if(file_split->dir && file_split->file)
{
result[offset] = '\\'; offset++;
}
#endif
strncpy(&result[offset], file_split->file,
file_split->filelen); offset += file_split->filelen;
result[offset] = '\0';
return(result);
}
static char *win32_merger(DSO *dso, const char *filespec1, const char *filespec2)
{
char *merged = NULL;
struct file_st *filespec1_split = NULL;
struct file_st *filespec2_split = NULL;
if(!filespec1 && !filespec2)
{
DSOerr(DSO_F_WIN32_MERGER,
ERR_R_PASSED_NULL_PARAMETER);
return(NULL);
}
if (!filespec2)
{
merged = OPENSSL_malloc(strlen(filespec1) + 1);
if(!merged)
{
DSOerr(DSO_F_WIN32_MERGER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
strcpy(merged, filespec1);
}
else if (!filespec1)
{
merged = OPENSSL_malloc(strlen(filespec2) + 1);
if(!merged)
{
DSOerr(DSO_F_WIN32_MERGER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
strcpy(merged, filespec2);
}
else
{
filespec1_split = win32_splitter(dso, filespec1, 0);
if (!filespec1_split)
{
DSOerr(DSO_F_WIN32_MERGER,
ERR_R_MALLOC_FAILURE);
return(NULL);
}
filespec2_split = win32_splitter(dso, filespec2, 1);
if (!filespec2_split)
{
DSOerr(DSO_F_WIN32_MERGER,
ERR_R_MALLOC_FAILURE);
OPENSSL_free(filespec1_split);
return(NULL);
}
/* Fill in into filespec1_split */
if (!filespec1_split->node && !filespec1_split->device)
{
filespec1_split->node = filespec2_split->node;
filespec1_split->nodelen = filespec2_split->nodelen;
filespec1_split->device = filespec2_split->device;
filespec1_split->devicelen = filespec2_split->devicelen;
}
if (!filespec1_split->dir)
{
filespec1_split->dir = filespec2_split->dir;
filespec1_split->dirlen = filespec2_split->dirlen;
}
else if (filespec1_split->dir[0] != '\\'
&& filespec1_split->dir[0] != '/')
{
filespec1_split->predir = filespec2_split->dir;
filespec1_split->predirlen = filespec2_split->dirlen;
}
if (!filespec1_split->file)
{
filespec1_split->file = filespec2_split->file;
filespec1_split->filelen = filespec2_split->filelen;
}
merged = win32_joiner(dso, filespec1_split);
}
return(merged);
}
static char *win32_name_converter(DSO *dso, const char *filename)
{
char *translated;
int len, transform;
len = strlen(filename);
transform = ((strstr(filename, "/") == NULL) &&
(strstr(filename, "\\") == NULL) &&
(strstr(filename, ":") == NULL));
if(transform)
/* We will convert this to "%s.dll" */
translated = OPENSSL_malloc(len + 5);
else
/* We will simply duplicate filename */
translated = OPENSSL_malloc(len + 1);
if(translated == NULL)
{
DSOerr(DSO_F_WIN32_NAME_CONVERTER,
DSO_R_NAME_TRANSLATION_FAILED);
return(NULL);
}
if(transform)
sprintf(translated, "%s.dll", filename);
else
sprintf(translated, "%s", filename);
return(translated);
}
static const char *openssl_strnchr(const char *string, int c, size_t len)
{
size_t i;
const char *p;
for (i = 0, p = string; i < len && *p; i++, p++)
{
if (*p == c)
return p;
}
return NULL;
}
#endif /* OPENSSL_SYS_WIN32 */