-/* dso_dl.c -*- mode:C; c-file-style: "eay" -*- */
-/* Written by Richard Levitte (richard@levitte.org) 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).
+/*
+ * 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 <stdio.h>
-#include "cryptlib.h"
-#include <openssl/dso.h>
+#include "dso_locl.h"
-#ifndef DSO_DL
-DSO_METHOD *DSO_METHOD_dl(void)
- {
- return NULL;
- }
-#else
+#ifdef DSO_DL
-#include <dl.h>
/* Part of the hack in "dl_load" ... */
-#define DSO_MAX_TRANSLATED_SIZE 256
+# define DSO_MAX_TRANSLATED_SIZE 256
static int dl_load(DSO *dso);
static int dl_unload(DSO *dso);
-static void *dl_bind_var(DSO *dso, const char *symname);
static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname);
-#if 0
-static int dl_unbind_var(DSO *dso, char *symname, void *symptr);
-static int dl_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
-static int dl_init(DSO *dso);
-static int dl_finish(DSO *dso);
-static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg);
-#endif
static char *dl_name_converter(DSO *dso, const char *filename);
-static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2);
+static char *dl_merger(DSO *dso, const char *filespec1,
+ const char *filespec2);
+static int dl_pathbyaddr(void *addr, char *path, int sz);
+static void *dl_globallookup(const char *name);
static DSO_METHOD dso_meth_dl = {
- "OpenSSL 'dl' shared library method",
- dl_load,
- dl_unload,
- dl_bind_var,
- dl_bind_func,
-/* For now, "unbind" doesn't exist */
-#if 0
- NULL, /* unbind_var */
- NULL, /* unbind_func */
-#endif
- NULL, /* ctrl */
- dl_name_converter,
- dl_merger,
- NULL, /* init */
- NULL /* finish */
- };
+ "OpenSSL 'dl' shared library method",
+ dl_load,
+ dl_unload,
+ dl_bind_func,
+ NULL, /* ctrl */
+ dl_name_converter,
+ dl_merger,
+ NULL, /* init */
+ NULL, /* finish */
+ dl_pathbyaddr,
+ dl_globallookup
+};
-DSO_METHOD *DSO_METHOD_dl(void)
- {
- return(&dso_meth_dl);
- }
+DSO_METHOD *DSO_METHOD_openssl(void)
+{
+ return &dso_meth_dl;
+}
-/* For this DSO_METHOD, our meth_data STACK will contain;
- * (i) the handle (shl_t) returned from shl_load().
- * NB: I checked on HPUX11 and shl_t is itself a pointer
- * type so the cast is safe.
+/*
+ * For this DSO_METHOD, our meth_data STACK will contain; (i) the handle
+ * (shl_t) returned from shl_load(). NB: I checked on HPUX11 and shl_t is
+ * itself a pointer type so the cast is safe.
*/
static int dl_load(DSO *dso)
- {
- shl_t ptr = NULL;
- /* We don't do any fancy retries or anything, just take the method's
- * (or DSO's if it has the callback set) best translation of the
- * platform-independant filename and try once with that. */
- char *filename= DSO_convert_filename(dso, NULL);
+{
+ shl_t ptr = NULL;
+ /*
+ * We don't do any fancy retries or anything, just take the method's (or
+ * DSO's if it has the callback set) best translation of the
+ * platform-independent filename and try once with that.
+ */
+ char *filename = DSO_convert_filename(dso, NULL);
- if(filename == NULL)
- {
- DSOerr(DSO_F_DL_LOAD,DSO_R_NO_FILENAME);
- goto err;
- }
- ptr = shl_load(filename, BIND_IMMEDIATE|DYNAMIC_PATH, NULL);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED);
- ERR_add_error_data(4, "filename(", filename, "): ",
- strerror(errno));
- goto err;
- }
- if(!sk_push(dso->meth_data, (char *)ptr))
- {
- DSOerr(DSO_F_DL_LOAD,DSO_R_STACK_ERROR);
- goto err;
- }
- /* Success, stick the converted filename we've loaded under into the DSO
- * (it also serves as the indicator that we are currently loaded). */
- dso->loaded_filename = filename;
- return(1);
-err:
- /* Cleanup! */
- if(filename != NULL)
- OPENSSL_free(filename);
- if(ptr != NULL)
- shl_unload(ptr);
- return(0);
- }
+ if (filename == NULL) {
+ DSOerr(DSO_F_DL_LOAD, DSO_R_NO_FILENAME);
+ goto err;
+ }
+ ptr = shl_load(filename, BIND_IMMEDIATE |
+ (dso->flags & DSO_FLAG_NO_NAME_TRANSLATION ? 0 :
+ DYNAMIC_PATH), 0L);
+ if (ptr == NULL) {
+ char errbuf[160];
+ DSOerr(DSO_F_DL_LOAD, DSO_R_LOAD_FAILED);
+ if (openssl_strerror_r(errno, errbuf, sizeof(errbuf)))
+ ERR_add_error_data(4, "filename(", filename, "): ", errbuf);
+ goto err;
+ }
+ if (!sk_push(dso->meth_data, (char *)ptr)) {
+ DSOerr(DSO_F_DL_LOAD, DSO_R_STACK_ERROR);
+ goto err;
+ }
+ /*
+ * Success, stick the converted filename we've loaded under into the DSO
+ * (it also serves as the indicator that we are currently loaded).
+ */
+ dso->loaded_filename = filename;
+ return (1);
+ err:
+ /* Cleanup! */
+ OPENSSL_free(filename);
+ if (ptr != NULL)
+ shl_unload(ptr);
+ return (0);
+}
static int dl_unload(DSO *dso)
- {
- shl_t ptr;
- if(dso == NULL)
- {
- DSOerr(DSO_F_DL_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
- return(0);
- }
- if(sk_num(dso->meth_data) < 1)
- return(1);
- /* Is this statement legal? */
- ptr = (shl_t)sk_pop(dso->meth_data);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DL_UNLOAD,DSO_R_NULL_HANDLE);
- /* Should push the value back onto the stack in
- * case of a retry. */
- sk_push(dso->meth_data, (char *)ptr);
- return(0);
- }
- shl_unload(ptr);
- return(1);
- }
-
-static void *dl_bind_var(DSO *dso, const char *symname)
- {
- shl_t ptr;
- void *sym;
-
- if((dso == NULL) || (symname == NULL))
- {
- DSOerr(DSO_F_DL_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- if(sk_num(dso->meth_data) < 1)
- {
- DSOerr(DSO_F_DL_BIND_VAR,DSO_R_STACK_ERROR);
- return(NULL);
- }
- ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DL_BIND_VAR,DSO_R_NULL_HANDLE);
- return(NULL);
- }
- if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
- {
- DSOerr(DSO_F_DL_BIND_VAR,DSO_R_SYM_FAILURE);
- ERR_add_error_data(4, "symname(", symname, "): ",
- strerror(errno));
- return(NULL);
- }
- return(sym);
- }
+{
+ shl_t ptr;
+ if (dso == NULL) {
+ DSOerr(DSO_F_DL_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
+ return (0);
+ }
+ if (sk_num(dso->meth_data) < 1)
+ return (1);
+ /* Is this statement legal? */
+ ptr = (shl_t) sk_pop(dso->meth_data);
+ if (ptr == NULL) {
+ DSOerr(DSO_F_DL_UNLOAD, DSO_R_NULL_HANDLE);
+ /*
+ * Should push the value back onto the stack in case of a retry.
+ */
+ sk_push(dso->meth_data, (char *)ptr);
+ return (0);
+ }
+ shl_unload(ptr);
+ return (1);
+}
static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname)
- {
- shl_t ptr;
- void *sym;
+{
+ shl_t ptr;
+ void *sym;
- if((dso == NULL) || (symname == NULL))
- {
- DSOerr(DSO_F_DL_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- if(sk_num(dso->meth_data) < 1)
- {
- DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_STACK_ERROR);
- return(NULL);
- }
- ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_NULL_HANDLE);
- return(NULL);
- }
- if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0)
- {
- DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_SYM_FAILURE);
- ERR_add_error_data(4, "symname(", symname, "): ",
- strerror(errno));
- return(NULL);
- }
- return((DSO_FUNC_TYPE)sym);
- }
+ if ((dso == NULL) || (symname == NULL)) {
+ DSOerr(DSO_F_DL_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ if (sk_num(dso->meth_data) < 1) {
+ DSOerr(DSO_F_DL_BIND_FUNC, DSO_R_STACK_ERROR);
+ return (NULL);
+ }
+ ptr = (shl_t) sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
+ if (ptr == NULL) {
+ DSOerr(DSO_F_DL_BIND_FUNC, DSO_R_NULL_HANDLE);
+ return (NULL);
+ }
+ if (shl_findsym(&ptr, symname, TYPE_UNDEFINED, &sym) < 0) {
+ char errbuf[160];
+ DSOerr(DSO_F_DL_BIND_FUNC, DSO_R_SYM_FAILURE);
+ if (openssl_strerror_r(errno, errbuf, sizeof(errbuf)))
+ ERR_add_error_data(4, "symname(", symname, "): ", errbuf);
+ return (NULL);
+ }
+ return ((DSO_FUNC_TYPE)sym);
+}
static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2)
- {
- char *merged;
+{
+ char *merged;
- if(!filespec1 && !filespec2)
- {
- DSOerr(DSO_F_DL_MERGER,
- ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- /* If the first file specification is a rooted path, it rules.
- same goes if the second file specification is missing. */
- if (!filespec2 || filespec1[0] == '/')
- {
- merged = OPENSSL_malloc(strlen(filespec1) + 1);
- if(!merged)
- {
- DSOerr(DSO_F_DL_MERGER,
- ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- strcpy(merged, filespec1);
- }
- /* If the first file specification is missing, the second one rules. */
- else if (!filespec1)
- {
- merged = OPENSSL_malloc(strlen(filespec2) + 1);
- if(!merged)
- {
- DSOerr(DSO_F_DL_MERGER,
- ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- strcpy(merged, filespec2);
- }
- else
- /* This part isn't as trivial as it looks. It assumes that
- the second file specification really is a directory, and
- makes no checks whatsoever. Therefore, the result becomes
- the concatenation of filespec2 followed by a slash followed
- by filespec1. */
- {
- int spec2len, len;
+ if (!filespec1 && !filespec2) {
+ DSOerr(DSO_F_DL_MERGER, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ /*
+ * If the first file specification is a rooted path, it rules. same goes
+ * if the second file specification is missing.
+ */
+ if (!filespec2 || filespec1[0] == '/') {
+ merged = OPENSSL_strdup(filespec1);
+ if (merged == NULL) {
+ DSOerr(DSO_F_DL_MERGER, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ }
+ /*
+ * If the first file specification is missing, the second one rules.
+ */
+ else if (!filespec1) {
+ merged = OPENSSL_strdup(filespec2);
+ if (merged == NULL) {
+ DSOerr(DSO_F_DL_MERGER, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ } else
+ /*
+ * This part isn't as trivial as it looks. It assumes that the
+ * second file specification really is a directory, and makes no
+ * checks whatsoever. Therefore, the result becomes the
+ * concatenation of filespec2 followed by a slash followed by
+ * filespec1.
+ */
+ {
+ int spec2len, len;
- spec2len = (filespec2 ? strlen(filespec2) : 0);
- len = spec2len + (filespec1 ? strlen(filespec1) : 0);
+ spec2len = (filespec2 ? strlen(filespec2) : 0);
+ len = spec2len + (filespec1 ? strlen(filespec1) : 0);
- if(filespec2 && filespec2[spec2len - 1] == '/')
- {
- spec2len--;
- len--;
- }
- merged = OPENSSL_malloc(len + 2);
- if(!merged)
- {
- DSOerr(DSO_F_DL_MERGER,
- ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- strcpy(merged, filespec2);
- merged[spec2len] = '/';
- strcpy(&merged[spec2len + 1], filespec1);
- }
- return(merged);
- }
+ if (spec2len && filespec2[spec2len - 1] == '/') {
+ spec2len--;
+ len--;
+ }
+ merged = OPENSSL_malloc(len + 2);
+ if (merged == NULL) {
+ DSOerr(DSO_F_DL_MERGER, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ strcpy(merged, filespec2);
+ merged[spec2len] = '/';
+ strcpy(&merged[spec2len + 1], filespec1);
+ }
+ return (merged);
+}
-/* This function is identical to the one in dso_dlfcn.c, but as it is highly
- * unlikely that both the "dl" *and* "dlfcn" variants are being compiled at the
- * same time, there's no great duplicating the code. Figuring out an elegant
- * way to share one copy of the code would be more difficult and would not
- * leave the implementations independant. */
-#if defined(__hpux)
-static const char extension[] = ".sl";
-#else
-static const char extension[] = ".so";
-#endif
+/*
+ * This function is identical to the one in dso_dlfcn.c, but as it is highly
+ * unlikely that both the "dl" *and* "dlfcn" variants are being compiled at
+ * the same time, there's no great duplicating the code. Figuring out an
+ * elegant way to share one copy of the code would be more difficult and
+ * would not leave the implementations independent.
+ */
static char *dl_name_converter(DSO *dso, const char *filename)
- {
- char *translated;
- int len, rsize, transform;
+{
+ char *translated;
+ int len, rsize, transform;
+
+ len = strlen(filename);
+ rsize = len + 1;
+ transform = (strstr(filename, "/") == NULL);
+ {
+ /* We will convert this to "%s.s?" or "lib%s.s?" */
+ rsize += strlen(DSO_EXTENSION); /* The length of ".s?" */
+ if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
+ rsize += 3; /* The length of "lib" */
+ }
+ translated = OPENSSL_malloc(rsize);
+ if (translated == NULL) {
+ DSOerr(DSO_F_DL_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
+ return (NULL);
+ }
+ if (transform) {
+ if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
+ sprintf(translated, "lib%s%s", filename, DSO_EXTENSION);
+ else
+ sprintf(translated, "%s%s", filename, DSO_EXTENSION);
+ } else
+ sprintf(translated, "%s", filename);
+ return (translated);
+}
+
+static int dl_pathbyaddr(void *addr, char *path, int sz)
+{
+ struct shl_descriptor inf;
+ int i, len;
+
+ if (addr == NULL) {
+ union {
+ int (*f) (void *, char *, int);
+ void *p;
+ } t = {
+ dl_pathbyaddr
+ };
+ addr = t.p;
+ }
+
+ for (i = -1; shl_get_r(i, &inf) == 0; i++) {
+ if (((size_t)addr >= inf.tstart && (size_t)addr < inf.tend) ||
+ ((size_t)addr >= inf.dstart && (size_t)addr < inf.dend)) {
+ len = (int)strlen(inf.filename);
+ if (sz <= 0)
+ return len + 1;
+ if (len >= sz)
+ len = sz - 1;
+ memcpy(path, inf.filename, len);
+ path[len++] = 0;
+ return len;
+ }
+ }
+
+ return -1;
+}
- len = strlen(filename);
- rsize = len + 1;
- transform = (strstr(filename, "/") == NULL);
- {
- /* We will convert this to "%s.s?" or "lib%s.s?" */
- rsize += strlen(extension);/* The length of ".s?" */
- if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
- rsize += 3; /* The length of "lib" */
- }
- translated = OPENSSL_malloc(rsize);
- if(translated == NULL)
- {
- DSOerr(DSO_F_DL_NAME_CONVERTER,
- DSO_R_NAME_TRANSLATION_FAILED);
- return(NULL);
- }
- if(transform)
- {
- if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0)
- sprintf(translated, "lib%s%s", filename, extension);
- else
- sprintf(translated, "%s%s", filename, extension);
- }
- else
- sprintf(translated, "%s", filename);
- return(translated);
- }
+static void *dl_globallookup(const char *name)
+{
+ void *ret;
+ shl_t h = NULL;
-#endif /* DSO_DL */
+ return shl_findsym(&h, name, TYPE_UNDEFINED, &ret) ? NULL : ret;
+}
+#endif /* DSO_DL */
projects / openssl.git / blobdiff