-/* dso_lib.c */
-/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
- * project 2000.
+/*
+ * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
#include <stdio.h>
#include <openssl/crypto.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/dso.h>
static DSO_METHOD *default_DSO_meth = NULL;
DSO *DSO_new(void)
- {
- return(DSO_new_method(NULL));
- }
+{
+ return (DSO_new_method(NULL));
+}
void DSO_set_default_method(DSO_METHOD *meth)
- {
- default_DSO_meth = meth;
- }
+{
+ default_DSO_meth = meth;
+}
DSO_METHOD *DSO_get_default_method(void)
- {
- return(default_DSO_meth);
- }
+{
+ return (default_DSO_meth);
+}
DSO_METHOD *DSO_get_method(DSO *dso)
- {
- return(dso->meth);
- }
+{
+ 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_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 = sk_new_null()) == 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);
- }
+{
+ 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 = OPENSSL_zalloc(sizeof(*ret));
+ if (ret == NULL) {
+ DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ 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)) {
+ sk_void_free(ret->meth_data);
+ 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);
+{
+ int i;
+
+ if (dso == NULL)
+ return (1);
+
+ i = CRYPTO_add(&dso->references, -1, CRYPTO_LOCK_DSO);
#ifdef REF_PRINT
- REF_PRINT("DSO",dso);
+ REF_PRINT("DSO", dso);
#endif
- if(i > 0) return(1);
+ if (i > 0)
+ return (1);
#ifdef REF_CHECK
- if(i < 0)
- {
- fprintf(stderr,"DSO_free, bad reference count\n");
- abort();
- }
+ 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);
-
- OPENSSL_free(dso);
- return(1);
- }
+ if ((dso->meth->dso_unload != NULL) && !dso->meth->dso_unload(dso)) {
+ DSOerr(DSO_F_DSO_FREE, DSO_R_UNLOAD_FAILED);
+ return (0);
+ }
-int DSO_flags(DSO *dso)
- {
- return((dso == NULL) ? 0 : dso->flags);
- }
+ 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);
+ OPENSSL_free(dso->filename);
+ OPENSSL_free(dso->loaded_filename);
+ OPENSSL_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);
- }
+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);
- }
+ 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(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;
- /* Bleurgh ... have to check for negative return values for
- * errors. <grimace> */
- if(DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0)
- {
- DSOerr(DSO_F_DSO_LOAD,DSO_R_CTRL_FAILED);
- if(allocated)
- DSO_free(ret);
- return(NULL);
- }
- 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);
- }
+{
+ 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);
- }
+{
+ 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... :-) */
+{
+ 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);
- }
- 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));
- }
+{
+ 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);
+ }
+ OPENSSL_strlcpy(copied, filename, strlen(filename) + 1);
+ 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);
+ }
+ OPENSSL_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);
+}
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