diff options
Diffstat (limited to 'crypto/dso/dso_lib.c')
-rw-r--r-- | crypto/dso/dso_lib.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/crypto/dso/dso_lib.c b/crypto/dso/dso_lib.c new file mode 100644 index 0000000000..acaac27847 --- /dev/null +++ b/crypto/dso/dso_lib.c @@ -0,0 +1,251 @@ +/* dso_lib.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 <openssl/crypto.h> +#include "cryptlib.h" +#include <openssl/dso.h> + +static DSO_METHOD *default_DSO_meth = NULL; + +DSO *DSO_new(void) + { + return(DSO_new_method(NULL)); + } + +void DSO_set_default_method(DSO_METHOD *meth) + { + default_DSO_meth = meth; + } + +DSO_METHOD *DSO_get_default_method(void) + { + return(default_DSO_meth); + } + +DSO_METHOD *DSO_get_method(DSO *dso) + { + return(dso->meth); + } + +DSO_METHOD *DSO_set_method(DSO *dso, DSO_METHOD *meth) + { + DSO_METHOD *mtmp; + mtmp = dso->meth; + dso->meth = meth; + return(mtmp); + } + +DSO *DSO_new_method(DSO_METHOD *meth) + { + DSO *ret; + + if(default_DSO_meth == NULL) + /* We default to DSO_METH_openssl() which in turn defaults + * to stealing the "best available" method. Will fallback + * to DSO_METH_null() in the worst case. */ + default_DSO_meth = DSO_METHOD_openssl(); + ret = (DSO *)Malloc(sizeof(DSO)); + if(ret == NULL) + { + DSOerr(DSO_F_DSO_NEW_METHOD,ERR_R_MALLOC_FAILURE); + return(NULL); + } + memset(ret, 0, sizeof(DSO)); + ret->meth_data = sk_new(NULL); + if((ret->meth_data = sk_new(NULL)) == NULL) + { + /* sk_new doesn't generate any errors so we do */ + DSOerr(DSO_F_DSO_NEW_METHOD,ERR_R_MALLOC_FAILURE); + Free(ret); + return(NULL); + } + if(meth == NULL) + ret->meth = default_DSO_meth; + else + ret->meth = meth; + ret->references = 1; + if((ret->meth->init != NULL) && !ret->meth->init(ret)) + { + Free(ret); + ret=NULL; + } + return(ret); + } + +int DSO_free(DSO *dso) + { + int i; + + if(dso == NULL) + { + DSOerr(DSO_F_DSO_FREE,ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + + i=CRYPTO_add(&dso->references,-1,CRYPTO_LOCK_DSO); +#ifdef REF_PRINT + REF_PRINT("DSO",dso); +#endif + if(i > 0) return(1); +#ifdef REF_CHECK + if(i < 0) + { + fprintf(stderr,"DSO_free, bad reference count\n"); + abort(); + } +#endif + + if((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) + { + DSOerr(DSO_F_DSO_FREE,DSO_R_UNLOAD_FAILED); + return(0); + } + + if((dso->meth->finish != NULL) && !dso->meth->finish(dso)) + { + DSOerr(DSO_F_DSO_FREE,DSO_R_FINISH_FAILED); + return(0); + } + + sk_free(dso->meth_data); + + Free(dso); + return(1); + } + +int DSO_flags(DSO *dso) + { + return((dso == NULL) ? 0 : dso->flags); + } + + +int DSO_up(DSO *dso) + { + if (dso == NULL) + { + DSOerr(DSO_F_DSO_UP,ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + + CRYPTO_add(&dso->references,1,CRYPTO_LOCK_DSO); + return(1); + } + +DSO *DSO_load(DSO *dso, char *filename, DSO_METHOD *meth) + { + DSO *ret; + int allocated = 0; + + if(filename == NULL) + { + DSOerr(DSO_F_DSO_LOAD,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(dso == NULL) + { + ret = DSO_new_method(meth); + if(ret == NULL) + { + DSOerr(DSO_F_DSO_LOAD,ERR_R_MALLOC_FAILURE); + return(NULL); + } + allocated = 1; + } + else + ret = dso; + if(ret->meth->dso_load == NULL) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_UNSUPPORTED); + if(allocated) + DSO_free(ret); + return(NULL); + } + if(!ret->meth->dso_load(ret, filename)) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_LOAD_FAILED); + if(allocated) + DSO_free(ret); + return(NULL); + } + /* Load succeeded */ + return(ret); + } + +void *DSO_bind(DSO *dso, char *symname) + { + void *ret = NULL; + + if((dso == NULL) || (symname == NULL)) + { + DSOerr(DSO_F_DSO_BIND,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(dso->meth->dso_bind == NULL) + { + DSOerr(DSO_F_DSO_BIND,DSO_R_UNSUPPORTED); + return(NULL); + } + if(!dso->meth->dso_bind(dso, symname, &ret)) + { + DSOerr(DSO_F_DSO_BIND,DSO_R_SYM_FAILURE); + return(NULL); + } + /* Success */ + return(ret); + } |