From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 00:33:56 +0200 Subject: initial/final commit --- openssl-1.1.0h/crypto/dso/dso_lib.c | 349 ++++++++++++++++++++++++++++++++++++ 1 file changed, 349 insertions(+) create mode 100644 openssl-1.1.0h/crypto/dso/dso_lib.c (limited to 'openssl-1.1.0h/crypto/dso/dso_lib.c') diff --git a/openssl-1.1.0h/crypto/dso/dso_lib.c b/openssl-1.1.0h/crypto/dso/dso_lib.c new file mode 100644 index 0000000..f58237d --- /dev/null +++ b/openssl-1.1.0h/crypto/dso/dso_lib.c @@ -0,0 +1,349 @@ +/* + * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include "dso_locl.h" + +static DSO_METHOD *default_DSO_meth = NULL; + +static 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 = 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); + } + ret->meth = default_DSO_meth; + ret->references = 1; + ret->lock = CRYPTO_THREAD_lock_new(); + if (ret->lock == NULL) { + DSOerr(DSO_F_DSO_NEW_METHOD, ERR_R_MALLOC_FAILURE); + sk_void_free(ret->meth_data); + OPENSSL_free(ret); + return NULL; + } + + if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { + DSO_free(ret); + ret = NULL; + } + + return ret; +} + +DSO *DSO_new(void) +{ + return DSO_new_method(NULL); +} + +int DSO_free(DSO *dso) +{ + int i; + + if (dso == NULL) + return (1); + + if (CRYPTO_atomic_add(&dso->references, -1, &i, dso->lock) <= 0) + return 0; + + REF_PRINT_COUNT("DSO", dso); + if (i > 0) + return 1; + REF_ASSERT_ISNT(i < 0); + + if ((dso->flags & DSO_FLAG_NO_UNLOAD_ON_FREE) == 0) { + 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); + OPENSSL_free(dso->filename); + OPENSSL_free(dso->loaded_filename); + CRYPTO_THREAD_lock_free(dso->lock); + OPENSSL_free(dso); + return 1; +} + +int DSO_flags(DSO *dso) +{ + return ((dso == NULL) ? 0 : dso->flags); +} + +int DSO_up_ref(DSO *dso) +{ + int i; + + if (dso == NULL) { + DSOerr(DSO_F_DSO_UP_REF, ERR_R_PASSED_NULL_PARAMETER); + return 0; + } + + if (CRYPTO_atomic_add(&dso->references, 1, &i, dso->lock) <= 0) + return 0; + + REF_PRINT_COUNT("DSO", r); + REF_ASSERT_ISNT(i < 2); + return ((i > 1) ? 1 : 0); +} + +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); +} + +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)); +} + +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_strdup(filename); + if (copied == NULL) { + DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_MALLOC_FAILURE); + return (0); + } + 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_strdup(filename); + if (result == NULL) { + DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_MALLOC_FAILURE); + return (NULL); + } + } + return (result); +} + +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); +} + +DSO *DSO_dsobyaddr(void *addr, int flags) +{ + DSO *ret = NULL; + char *filename = NULL; + int len = DSO_pathbyaddr(addr, NULL, 0); + + if (len < 0) + return NULL; + + filename = OPENSSL_malloc(len); + if (filename != NULL + && DSO_pathbyaddr(addr, filename, len) == len) + ret = DSO_load(NULL, filename, NULL, flags); + + OPENSSL_free(filename); + return ret; +} + +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); +} -- cgit v1.2.3