diff options
author | Geoff Thorpe <geoff@openssl.org> | 2000-04-04 21:57:11 +0000 |
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committer | Geoff Thorpe <geoff@openssl.org> | 2000-04-04 21:57:11 +0000 |
commit | 8f4fac7f965b4604bc71be4bd486a8641c0504ab (patch) | |
tree | 9994f9cd3c12be7a390c1c7b11aad884e93cc8e0 /crypto/dso/dso_win32.c | |
parent | 02859fb74ac980303994dd46c28e0cd2211aba12 (diff) |
This is a set of startup code for the DSO support, it's not yet linked into
the build process (an upcoming commit no doubt), and is very much *new*
code - what that means is that it compiles ok - usually. It certainly
doesn't mean it runs well or even properly yet. Please don't muck round
with this unless you're looking to help out and hunt bugs. :-)
Currently this code doesn't have any support for controlling the "load"
behaviour (eg. paths, filename translations, etc). That'll be handled
using DSO_ctrl() and various flags, once we work out a sensible set of
flags.
Diffstat (limited to 'crypto/dso/dso_win32.c')
-rw-r--r-- | crypto/dso/dso_win32.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/crypto/dso/dso_win32.c b/crypto/dso/dso_win32.c new file mode 100644 index 0000000000..f04cb58a52 --- /dev/null +++ b/crypto/dso/dso_win32.c @@ -0,0 +1,193 @@ +/* dso_win32.c */ +/* Written by Geoff Thorpe (geoff@geoffthorpe.net) 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 + * licensing@OpenSSL.org. + * + * 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 + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/dso.h> + +#ifndef WIN32 +DSO_METHOD *DSO_METHOD_win32(void) + { + return NULL; + } +#else + +static int win32_load(DSO *dso, char *filename); +static int win32_unload(DSO *dso); +static int win32_bind(DSO *dso, char *symname, void **symptr); +#if 0 +static int win32_unbind(DSO *dso, char *symname, void *symptr); +static int win32_init(DSO *dso); +static int win32_finish(DSO *dso); +#endif + +static DSO_METHOD dso_meth_win32 = { + "OpenSSL 'win32' shared library method", + win32_load, + win32_unload, + win32_bind, +/* For now, "unbind" doesn't exist */ +#if 0 + NULL, /* unbind */ +#endif + 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, char *filename) + { + HINSTANCE h, *p; + + h = LoadLibrary(filename); + if(h == NULL) + { + DSOerr(DSO_F_WIN32_LOAD,DSO_R_LOAD_FAILED); + return(0); + } + p = (HINSTANCE *)Malloc(sizeof(HINSTANCE)); + if(p == NULL) + { + DSOerr(DSO_F_WIN32_LOAD,ERR_R_MALLOC_FAILURE); + FreeLibrary(h); + return(0); + } + *p = h; + if(!sk_push(dso->meth_data, (char *)p)) + { + DSOerr(DSO_F_WIN32_LOAD,DSO_R_STACK_ERROR); + FreeLibrary(h); + Free(p); + return(0); + } + return(1); + } + +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) + { + DSOerr(DSO_F_WIN32_UNLOAD,DSO_R_STACK_ERROR); + return(0); + } + 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 */ + Free(p); + return(1); + } + +static int win32_bind(DSO *dso, char *symname, void **symptr) + { + HINSTANCE *ptr; + void *sym; + + if((dso == NULL) || (symptr == NULL) || (symname == NULL)) + { + DSOerr(DSO_F_WIN32_BIND,ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + if(sk_num(dso->meth_data) < 1) + { + DSOerr(DSO_F_WIN32_BIND,DSO_R_STACK_ERROR); + return(0); + } + ptr = (HINSTANCE *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1); + if(ptr == NULL) + { + DSOerr(DSO_F_WIN32_BIND,DSO_R_NULL_HANDLE); + return(0); + } + sym = GetProcAddress(*ptr, symname); + if(sym == NULL) + { + DSOerr(DSO_F_WIN32_BIND,DSO_R_SYM_FAILURE); + return(0); + } + *symptr = sym; + return(1); + } + +#endif /* WIN32 */ |