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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/crypto/dso/dso_lib.c
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Diffstat (limited to 'openssl/crypto/dso/dso_lib.c')
-rw-r--r--openssl/crypto/dso/dso_lib.c466
1 files changed, 466 insertions, 0 deletions
diff --git a/openssl/crypto/dso/dso_lib.c b/openssl/crypto/dso/dso_lib.c
new file mode 100644
index 000000000..49bdd7130
--- /dev/null
+++ b/openssl/crypto/dso/dso_lib.c
@@ -0,0 +1,466 @@
+/* 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_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_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(filespec1 == NULL)
+ filespec1 = dso->filename;
+ if(filespec1 == NULL)
+ {
+ DSOerr(DSO_F_DSO_MERGE,DSO_R_NO_FILE_SPECIFICATION);
+ 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);
+ }