diff options
Diffstat (limited to 'openssl/crypto/dso/dso_lib.c')
| -rw-r--r-- | openssl/crypto/dso/dso_lib.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/openssl/crypto/dso/dso_lib.c b/openssl/crypto/dso/dso_lib.c new file mode 100644 index 00000000..8a15b794 --- /dev/null +++ b/openssl/crypto/dso/dso_lib.c @@ -0,0 +1,483 @@ +/* dso_lib.c -*- mode:C; c-file-style: "eay" -*- */ +/* 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 *)OPENSSL_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_void_new_null(); + if(ret->meth_data == NULL) + { + /* sk_new doesn't generate any errors so we do */ + DSOerr(DSO_F_DSO_NEW_METHOD,ERR_R_MALLOC_FAILURE); + OPENSSL_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)) + { + OPENSSL_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_void_free(dso->meth_data); + if(dso->filename != NULL) + OPENSSL_free(dso->filename); + if(dso->loaded_filename != NULL) + OPENSSL_free(dso->loaded_filename); + + OPENSSL_free(dso); + return(1); + } + +int DSO_flags(DSO *dso) + { + return((dso == NULL) ? 0 : dso->flags); + } + + +int DSO_up_ref(DSO *dso) + { + if (dso == NULL) + { + DSOerr(DSO_F_DSO_UP_REF,ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + + CRYPTO_add(&dso->references,1,CRYPTO_LOCK_DSO); + return(1); + } + +DSO *DSO_load(DSO *dso, const char *filename, DSO_METHOD *meth, int flags) + { + DSO *ret; + int allocated = 0; + + if(dso == NULL) + { + ret = DSO_new_method(meth); + if(ret == NULL) + { + DSOerr(DSO_F_DSO_LOAD,ERR_R_MALLOC_FAILURE); + goto err; + } + allocated = 1; + /* Pass the provided flags to the new DSO object */ + if(DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_CTRL_FAILED); + goto err; + } + } + else + ret = dso; + /* Don't load if we're currently already loaded */ + if(ret->filename != NULL) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_DSO_ALREADY_LOADED); + goto err; + } + /* filename can only be NULL if we were passed a dso that already has + * one set. */ + if(filename != NULL) + if(!DSO_set_filename(ret, filename)) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_SET_FILENAME_FAILED); + goto err; + } + filename = ret->filename; + if(filename == NULL) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_NO_FILENAME); + goto err; + } + if(ret->meth->dso_load == NULL) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_UNSUPPORTED); + goto err; + } + if(!ret->meth->dso_load(ret)) + { + DSOerr(DSO_F_DSO_LOAD,DSO_R_LOAD_FAILED); + goto err; + } + /* Load succeeded */ + return(ret); +err: + if(allocated) + DSO_free(ret); + return(NULL); + } + +void *DSO_bind_var(DSO *dso, const char *symname) + { + void *ret = NULL; + + if((dso == NULL) || (symname == NULL)) + { + DSOerr(DSO_F_DSO_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(dso->meth->dso_bind_var == NULL) + { + DSOerr(DSO_F_DSO_BIND_VAR,DSO_R_UNSUPPORTED); + return(NULL); + } + if((ret = dso->meth->dso_bind_var(dso, symname)) == NULL) + { + DSOerr(DSO_F_DSO_BIND_VAR,DSO_R_SYM_FAILURE); + return(NULL); + } + /* Success */ + return(ret); + } + +DSO_FUNC_TYPE DSO_bind_func(DSO *dso, const char *symname) + { + DSO_FUNC_TYPE ret = NULL; + + if((dso == NULL) || (symname == NULL)) + { + DSOerr(DSO_F_DSO_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(dso->meth->dso_bind_func == NULL) + { + DSOerr(DSO_F_DSO_BIND_FUNC,DSO_R_UNSUPPORTED); + return(NULL); + } + if((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) + { + DSOerr(DSO_F_DSO_BIND_FUNC,DSO_R_SYM_FAILURE); + return(NULL); + } + /* Success */ + return(ret); + } + +/* I don't really like these *_ctrl functions very much to be perfectly + * honest. For one thing, I think I have to return a negative value for + * any error because possible DSO_ctrl() commands may return values + * such as "size"s that can legitimately be zero (making the standard + * "if(DSO_cmd(...))" form that works almost everywhere else fail at + * odd times. I'd prefer "output" values to be passed by reference and + * the return value as success/failure like usual ... but we conform + * when we must... :-) */ +long DSO_ctrl(DSO *dso, int cmd, long larg, void *parg) + { + if(dso == NULL) + { + DSOerr(DSO_F_DSO_CTRL,ERR_R_PASSED_NULL_PARAMETER); + return(-1); + } + /* We should intercept certain generic commands and only pass control + * to the method-specific ctrl() function if it's something we don't + * handle. */ + switch(cmd) + { + case DSO_CTRL_GET_FLAGS: + return dso->flags; + case DSO_CTRL_SET_FLAGS: + dso->flags = (int)larg; + return(0); + case DSO_CTRL_OR_FLAGS: + dso->flags |= (int)larg; + return(0); + default: + break; + } + if((dso->meth == NULL) || (dso->meth->dso_ctrl == NULL)) + { + DSOerr(DSO_F_DSO_CTRL,DSO_R_UNSUPPORTED); + return(-1); + } + return(dso->meth->dso_ctrl(dso,cmd,larg,parg)); + } + +int DSO_set_name_converter(DSO *dso, DSO_NAME_CONVERTER_FUNC cb, + DSO_NAME_CONVERTER_FUNC *oldcb) + { + if(dso == NULL) + { + DSOerr(DSO_F_DSO_SET_NAME_CONVERTER, + ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + if(oldcb) + *oldcb = dso->name_converter; + dso->name_converter = cb; + return(1); + } + +const char *DSO_get_filename(DSO *dso) + { + if(dso == NULL) + { + DSOerr(DSO_F_DSO_GET_FILENAME,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + return(dso->filename); + } + +int DSO_set_filename(DSO *dso, const char *filename) + { + char *copied; + + if((dso == NULL) || (filename == NULL)) + { + DSOerr(DSO_F_DSO_SET_FILENAME,ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + if(dso->loaded_filename) + { + DSOerr(DSO_F_DSO_SET_FILENAME,DSO_R_DSO_ALREADY_LOADED); + return(0); + } + /* We'll duplicate filename */ + copied = OPENSSL_malloc(strlen(filename) + 1); + if(copied == NULL) + { + DSOerr(DSO_F_DSO_SET_FILENAME,ERR_R_MALLOC_FAILURE); + return(0); + } + BUF_strlcpy(copied, filename, strlen(filename) + 1); + if(dso->filename) + OPENSSL_free(dso->filename); + dso->filename = copied; + return(1); + } + +char *DSO_merge(DSO *dso, const char *filespec1, const char *filespec2) + { + char *result = NULL; + + if(dso == NULL || filespec1 == NULL) + { + DSOerr(DSO_F_DSO_MERGE,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) + { + if(dso->merger != NULL) + result = dso->merger(dso, filespec1, filespec2); + else if(dso->meth->dso_merger != NULL) + result = dso->meth->dso_merger(dso, + filespec1, filespec2); + } + return(result); + } + +char *DSO_convert_filename(DSO *dso, const char *filename) + { + char *result = NULL; + + if(dso == NULL) + { + DSOerr(DSO_F_DSO_CONVERT_FILENAME,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(filename == NULL) + filename = dso->filename; + if(filename == NULL) + { + DSOerr(DSO_F_DSO_CONVERT_FILENAME,DSO_R_NO_FILENAME); + return(NULL); + } + if((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) + { + if(dso->name_converter != NULL) + result = dso->name_converter(dso, filename); + else if(dso->meth->dso_name_converter != NULL) + result = dso->meth->dso_name_converter(dso, filename); + } + if(result == NULL) + { + result = OPENSSL_malloc(strlen(filename) + 1); + if(result == NULL) + { + DSOerr(DSO_F_DSO_CONVERT_FILENAME, + ERR_R_MALLOC_FAILURE); + return(NULL); + } + BUF_strlcpy(result, filename, strlen(filename) + 1); + } + return(result); + } + +const char *DSO_get_loaded_filename(DSO *dso) + { + if(dso == NULL) + { + DSOerr(DSO_F_DSO_GET_LOADED_FILENAME, + ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + return(dso->loaded_filename); + } + +int DSO_pathbyaddr(void *addr,char *path,int sz) + { + DSO_METHOD *meth = default_DSO_meth; + if (meth == NULL) meth = DSO_METHOD_openssl(); + if (meth->pathbyaddr == NULL) + { + DSOerr(DSO_F_DSO_PATHBYADDR,DSO_R_UNSUPPORTED); + return -1; + } + return (*meth->pathbyaddr)(addr,path,sz); + } + +void *DSO_global_lookup(const char *name) + { + DSO_METHOD *meth = default_DSO_meth; + if (meth == NULL) meth = DSO_METHOD_openssl(); + if (meth->globallookup == NULL) + { + DSOerr(DSO_F_DSO_GLOBAL_LOOKUP,DSO_R_UNSUPPORTED); + return NULL; + } + return (*meth->globallookup)(name); + } |