-/* dso_dlfcn.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).
+/*
+ * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (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
*/
-/* We need to do this early, because stdio.h includes the header files
- that handle _GNU_SOURCE and other similar macros. Defining it later
- is simply too late, because those headers are protected from re-
- inclusion. */
-#ifdef __linux
-# ifndef _GNU_SOURCE
-# define _GNU_SOURCE /* make sure dladdr is declared */
-# endif
+/*
+ * We need to do this early, because stdio.h includes the header files that
+ * handle _GNU_SOURCE and other similar macros. Defining it later is simply
+ * too late, because those headers are protected from re- inclusion.
+ */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE /* make sure dladdr is declared */
#endif
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/dso.h>
-
-#ifndef DSO_DLFCN
-DSO_METHOD *DSO_METHOD_dlfcn(void)
- {
- return NULL;
- }
-#else
-
-#ifdef HAVE_DLFCN_H
-
-#include <dlfcn.h>
-#endif
+#include "dso_locl.h"
+#include "e_os.h"
+
+#ifdef DSO_DLFCN
+
+# ifdef HAVE_DLFCN_H
+# ifdef __osf__
+# define __EXTENSIONS__
+# endif
+# include <dlfcn.h>
+# define HAVE_DLINFO 1
+# if defined(__SCO_VERSION__) || defined(_SCO_ELF) || \
+ (defined(__osf__) && !defined(RTLD_NEXT)) || \
+ (defined(__OpenBSD__) && !defined(RTLD_SELF)) || \
+ defined(__ANDROID__)
+# undef HAVE_DLINFO
+# endif
+# endif
/* Part of the hack in "dlfcn_load" ... */
-#define DSO_MAX_TRANSLATED_SIZE 256
+# define DSO_MAX_TRANSLATED_SIZE 256
static int dlfcn_load(DSO *dso);
static int dlfcn_unload(DSO *dso);
-static void *dlfcn_bind_var(DSO *dso, const char *symname);
static DSO_FUNC_TYPE dlfcn_bind_func(DSO *dso, const char *symname);
-#if 0
-static int dlfcn_unbind(DSO *dso, char *symname, void *symptr);
-static int dlfcn_init(DSO *dso);
-static int dlfcn_finish(DSO *dso);
-static long dlfcn_ctrl(DSO *dso, int cmd, long larg, void *parg);
-#endif
static char *dlfcn_name_converter(DSO *dso, const char *filename);
static char *dlfcn_merger(DSO *dso, const char *filespec1,
- const char *filespec2);
-static int dlfcn_pathbyaddr(void *addr,char *path,int sz);
+ const char *filespec2);
+static int dlfcn_pathbyaddr(void *addr, char *path, int sz);
+static void *dlfcn_globallookup(const char *name);
static DSO_METHOD dso_meth_dlfcn = {
- "OpenSSL 'dlfcn' shared library method",
- dlfcn_load,
- dlfcn_unload,
- dlfcn_bind_var,
- dlfcn_bind_func,
-/* For now, "unbind" doesn't exist */
-#if 0
- NULL, /* unbind_var */
- NULL, /* unbind_func */
-#endif
- NULL, /* ctrl */
- dlfcn_name_converter,
- dlfcn_merger,
- NULL, /* init */
- NULL, /* finish */
- dlfcn_pathbyaddr
- };
-
-DSO_METHOD *DSO_METHOD_dlfcn(void)
- {
- return(&dso_meth_dlfcn);
- }
-
-/* Prior to using the dlopen() function, we should decide on the flag
- * we send. There's a few different ways of doing this and it's a
- * messy venn-diagram to match up which platforms support what. So
- * as we don't have autoconf yet, I'm implementing a hack that could
- * be hacked further relatively easily to deal with cases as we find
- * them. Initially this is to cope with OpenBSD. */
-#if defined(__OpenBSD__) || defined(__NetBSD__)
-# ifdef DL_LAZY
-# define DLOPEN_FLAG DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define DLOPEN_FLAG RTLD_NOW
-# else
-# define DLOPEN_FLAG 0
-# endif
-# endif
-#else
-# ifdef OPENSSL_SYS_SUNOS
-# define DLOPEN_FLAG 1
-# else
-# define DLOPEN_FLAG RTLD_NOW /* Hope this works everywhere else */
-# endif
-#endif
+ "OpenSSL 'dlfcn' shared library method",
+ dlfcn_load,
+ dlfcn_unload,
+ dlfcn_bind_func,
+ NULL, /* ctrl */
+ dlfcn_name_converter,
+ dlfcn_merger,
+ NULL, /* init */
+ NULL, /* finish */
+ dlfcn_pathbyaddr,
+ dlfcn_globallookup
+};
+
+DSO_METHOD *DSO_METHOD_openssl(void)
+{
+ return &dso_meth_dlfcn;
+}
+
+/*
+ * Prior to using the dlopen() function, we should decide on the flag we
+ * send. There's a few different ways of doing this and it's a messy
+ * venn-diagram to match up which platforms support what. So as we don't have
+ * autoconf yet, I'm implementing a hack that could be hacked further
+ * relatively easily to deal with cases as we find them. Initially this is to
+ * cope with OpenBSD.
+ */
+# if defined(__OpenBSD__) || defined(__NetBSD__)
+# ifdef DL_LAZY
+# define DLOPEN_FLAG DL_LAZY
+# else
+# ifdef RTLD_NOW
+# define DLOPEN_FLAG RTLD_NOW
+# else
+# define DLOPEN_FLAG 0
+# endif
+# endif
+# else
+# define DLOPEN_FLAG RTLD_NOW /* Hope this works everywhere else */
+# endif
-/* For this DSO_METHOD, our meth_data STACK will contain;
- * (i) the handle (void*) returned from dlopen().
+/*
+ * For this DSO_METHOD, our meth_data STACK will contain; (i) the handle
+ * (void*) returned from dlopen().
*/
static int dlfcn_load(DSO *dso)
- {
- void *ptr = NULL;
- /* See applicable comments in dso_dl.c */
- char *filename = DSO_convert_filename(dso, NULL);
- int flags = DLOPEN_FLAG;
-
- if(filename == NULL)
- {
- DSOerr(DSO_F_DLFCN_LOAD,DSO_R_NO_FILENAME);
- goto err;
- }
-
-#ifdef RTLD_GLOBAL
- if (dso->flags & DSO_FLAG_GLOBAL_SYMBOLS)
- flags |= RTLD_GLOBAL;
-#endif
- ptr = dlopen(filename, flags);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DLFCN_LOAD,DSO_R_LOAD_FAILED);
- ERR_add_error_data(4, "filename(", filename, "): ", dlerror());
- goto err;
- }
- if(!sk_push(dso->meth_data, (char *)ptr))
- {
- DSOerr(DSO_F_DLFCN_LOAD,DSO_R_STACK_ERROR);
- goto err;
- }
- /* Success */
- dso->loaded_filename = filename;
- return(1);
-err:
- /* Cleanup! */
- if(filename != NULL)
- OPENSSL_free(filename);
- if(ptr != NULL)
- dlclose(ptr);
- return(0);
+{
+ void *ptr = NULL;
+ /* See applicable comments in dso_dl.c */
+ char *filename = DSO_convert_filename(dso, NULL);
+ int flags = DLOPEN_FLAG;
+ int saveerrno = get_last_sys_error();
+
+ if (filename == NULL) {
+ DSOerr(DSO_F_DLFCN_LOAD, DSO_R_NO_FILENAME);
+ goto err;
+ }
+# ifdef RTLD_GLOBAL
+ if (dso->flags & DSO_FLAG_GLOBAL_SYMBOLS)
+ flags |= RTLD_GLOBAL;
+# endif
+# ifdef _AIX
+ if (filename[strlen(filename) - 1] == ')')
+ flags |= RTLD_MEMBER;
+# endif
+ ptr = dlopen(filename, flags);
+ if (ptr == NULL) {
+ DSOerr(DSO_F_DLFCN_LOAD, DSO_R_LOAD_FAILED);
+ ERR_add_error_data(4, "filename(", filename, "): ", dlerror());
+ goto err;
+ }
+ /*
+ * Some dlopen() implementations (e.g. solaris) do no preserve errno, even
+ * on a successful call.
+ */
+ set_sys_error(saveerrno);
+ if (!sk_void_push(dso->meth_data, (char *)ptr)) {
+ DSOerr(DSO_F_DLFCN_LOAD, DSO_R_STACK_ERROR);
+ goto err;
+ }
+ /* Success */
+ dso->loaded_filename = filename;
+ return 1;
+ err:
+ /* Cleanup! */
+ OPENSSL_free(filename);
+ if (ptr != NULL)
+ dlclose(ptr);
+ return 0;
}
static int dlfcn_unload(DSO *dso)
- {
- void *ptr;
- if(dso == NULL)
- {
- DSOerr(DSO_F_DLFCN_UNLOAD,ERR_R_PASSED_NULL_PARAMETER);
- return(0);
- }
- if(sk_num(dso->meth_data) < 1)
- return(1);
- ptr = (void *)sk_pop(dso->meth_data);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DLFCN_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);
- }
- /* For now I'm not aware of any errors associated with dlclose() */
- dlclose(ptr);
- return(1);
- }
-
-static void *dlfcn_bind_var(DSO *dso, const char *symname)
- {
- void *ptr, *sym;
-
- if((dso == NULL) || (symname == NULL))
- {
- DSOerr(DSO_F_DLFCN_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- if(sk_num(dso->meth_data) < 1)
- {
- DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_STACK_ERROR);
- return(NULL);
- }
- ptr = (void *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_NULL_HANDLE);
- return(NULL);
- }
- sym = dlsym(ptr, symname);
- if(sym == NULL)
- {
- DSOerr(DSO_F_DLFCN_BIND_VAR,DSO_R_SYM_FAILURE);
- ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
- return(NULL);
- }
- return(sym);
- }
+{
+ void *ptr;
+ if (dso == NULL) {
+ DSOerr(DSO_F_DLFCN_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+ if (sk_void_num(dso->meth_data) < 1)
+ return 1;
+ ptr = sk_void_pop(dso->meth_data);
+ if (ptr == NULL) {
+ DSOerr(DSO_F_DLFCN_UNLOAD, DSO_R_NULL_HANDLE);
+ /*
+ * Should push the value back onto the stack in case of a retry.
+ */
+ sk_void_push(dso->meth_data, ptr);
+ return 0;
+ }
+ /* For now I'm not aware of any errors associated with dlclose() */
+ dlclose(ptr);
+ return 1;
+}
static DSO_FUNC_TYPE dlfcn_bind_func(DSO *dso, const char *symname)
- {
- void *ptr;
- DSO_FUNC_TYPE sym, *tsym = &sym;
-
- if((dso == NULL) || (symname == NULL))
- {
- DSOerr(DSO_F_DLFCN_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- if(sk_num(dso->meth_data) < 1)
- {
- DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_STACK_ERROR);
- return(NULL);
- }
- ptr = (void *)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1);
- if(ptr == NULL)
- {
- DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_NULL_HANDLE);
- return(NULL);
- }
- *(void **)(tsym) = dlsym(ptr, symname);
- if(sym == NULL)
- {
- DSOerr(DSO_F_DLFCN_BIND_FUNC,DSO_R_SYM_FAILURE);
- ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
- return(NULL);
- }
- return(sym);
- }
+{
+ void *ptr;
+ union {
+ DSO_FUNC_TYPE sym;
+ void *dlret;
+ } u;
+
+ if ((dso == NULL) || (symname == NULL)) {
+ DSOerr(DSO_F_DLFCN_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
+ return NULL;
+ }
+ if (sk_void_num(dso->meth_data) < 1) {
+ DSOerr(DSO_F_DLFCN_BIND_FUNC, DSO_R_STACK_ERROR);
+ return NULL;
+ }
+ ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
+ if (ptr == NULL) {
+ DSOerr(DSO_F_DLFCN_BIND_FUNC, DSO_R_NULL_HANDLE);
+ return NULL;
+ }
+ u.dlret = dlsym(ptr, symname);
+ if (u.dlret == NULL) {
+ DSOerr(DSO_F_DLFCN_BIND_FUNC, DSO_R_SYM_FAILURE);
+ ERR_add_error_data(4, "symname(", symname, "): ", dlerror());
+ return NULL;
+ }
+ return u.sym;
+}
static char *dlfcn_merger(DSO *dso, const char *filespec1,
- const char *filespec2)
- {
- char *merged;
-
- if(!filespec1 && !filespec2)
- {
- DSOerr(DSO_F_DLFCN_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_DLFCN_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_DLFCN_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;
-
- 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_DLFCN_MERGER,
- ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- strcpy(merged, filespec2);
- merged[spec2len] = '/';
- strcpy(&merged[spec2len + 1], filespec1);
- }
- return(merged);
- }
+ const char *filespec2)
+{
+ char *merged;
+
+ if (!filespec1 && !filespec2) {
+ DSOerr(DSO_F_DLFCN_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 != NULL && filespec1[0] == '/')) {
+ merged = OPENSSL_strdup(filespec1);
+ if (merged == NULL) {
+ DSOerr(DSO_F_DLFCN_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_DLFCN_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 = strlen(filespec2);
+ len = spec2len + strlen(filespec1);
+
+ if (spec2len && filespec2[spec2len - 1] == '/') {
+ spec2len--;
+ len--;
+ }
+ merged = OPENSSL_malloc(len + 2);
+ if (merged == NULL) {
+ DSOerr(DSO_F_DLFCN_MERGER, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ strcpy(merged, filespec2);
+ merged[spec2len] = '/';
+ strcpy(&merged[spec2len + 1], filespec1);
+ }
+ return merged;
+}
static char *dlfcn_name_converter(DSO *dso, const char *filename)
- {
- char *translated;
- int len, rsize, transform;
-
- len = strlen(filename);
- rsize = len + 1;
- transform = (strstr(filename, "/") == NULL);
- if(transform)
- {
- /* We will convert this to "%s.so" or "lib%s.so" */
- rsize += 3; /* The length of ".so" */
- 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_DLFCN_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.so", filename);
- else
- sprintf(translated, "%s.so", filename);
- }
- else
- sprintf(translated, "%s", filename);
- return(translated);
- }
-
-#ifdef __sgi
-#if 0
+{
+ char *translated;
+ int len, rsize, transform;
+
+ len = strlen(filename);
+ rsize = len + 1;
+ transform = (strstr(filename, "/") == NULL);
+ if (transform) {
+ /* We will convert this to "%s.so" or "lib%s.so" etc */
+ rsize += strlen(DSO_EXTENSION); /* The length of ".so" */
+ 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_DLFCN_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" DSO_EXTENSION, filename);
+ else
+ sprintf(translated, "%s" DSO_EXTENSION, filename);
+ } else
+ sprintf(translated, "%s", filename);
+ return translated;
+}
+
+# ifdef __sgi
+/*-
This is a quote from IRIX manual for dladdr(3c):
<dlfcn.h> does not contain a prototype for dladdr or definition of
part of the IRIX compatibility guarantee; however, there is no future
intention to change this interface, so on a practical level, the code
below is safe to use on IRIX.
-#endif
-#include <rld_interface.h>
-#ifndef _RLD_INTERFACE_DLFCN_H_DLADDR
-#define _RLD_INTERFACE_DLFCN_H_DLADDR
+*/
+# include <rld_interface.h>
+# ifndef _RLD_INTERFACE_DLFCN_H_DLADDR
+# define _RLD_INTERFACE_DLFCN_H_DLADDR
typedef struct Dl_info {
- const char * dli_fname;
- void * dli_fbase;
- const char * dli_sname;
- void * dli_saddr;
- int dli_version;
- int dli_reserved1;
- long dli_reserved[4];
+ const char *dli_fname;
+ void *dli_fbase;
+ const char *dli_sname;
+ void *dli_saddr;
+ int dli_version;
+ int dli_reserved1;
+ long dli_reserved[4];
} Dl_info;
-#else
+# else
typedef struct Dl_info Dl_info;
-#endif
-#define _RLD_DLADDR 14
+# endif
+# define _RLD_DLADDR 14
static int dladdr(void *address, Dl_info *dl)
{
- void *v;
- v = _rld_new_interface(_RLD_DLADDR,address,dl);
- return (int)v;
+ void *v;
+ v = _rld_new_interface(_RLD_DLADDR, address, dl);
+ return (int)v;
+}
+# endif /* __sgi */
+
+# ifdef _AIX
+/*-
+ * See IBM's AIX Version 7.2, Technical Reference:
+ * Base Operating System and Extensions, Volume 1 and 2
+ * https://www.ibm.com/support/knowledgecenter/ssw_aix_72/com.ibm.aix.base/technicalreferences.htm
+ */
+# include <sys/ldr.h>
+# include <errno.h>
+/* ~ 64 * (sizeof(struct ld_info) + _XOPEN_PATH_MAX + _XOPEN_NAME_MAX) */
+# define DLFCN_LDINFO_SIZE 86976
+typedef struct Dl_info {
+ const char *dli_fname;
+} Dl_info;
+/*
+ * This dladdr()-implementation will also find the ptrgl (Pointer Glue) virtual
+ * address of a function, which is just located in the DATA segment instead of
+ * the TEXT segment.
+ */
+static int dladdr(void *ptr, Dl_info *dl)
+{
+ uintptr_t addr = (uintptr_t)ptr;
+ unsigned int found = 0;
+ struct ld_info *ldinfos, *next_ldi, *this_ldi;
+
+ if ((ldinfos = OPENSSL_malloc(DLFCN_LDINFO_SIZE)) == NULL) {
+ errno = ENOMEM;
+ dl->dli_fname = NULL;
+ return 0;
+ }
+
+ if ((loadquery(L_GETINFO, (void *)ldinfos, DLFCN_LDINFO_SIZE)) < 0) {
+ /*-
+ * Error handling is done through errno and dlerror() reading errno:
+ * ENOMEM (ldinfos buffer is too small),
+ * EINVAL (invalid flags),
+ * EFAULT (invalid ldinfos ptr)
+ */
+ OPENSSL_free((void *)ldinfos);
+ dl->dli_fname = NULL;
+ return 0;
+ }
+ next_ldi = ldinfos;
+
+ do {
+ this_ldi = next_ldi;
+ if (((addr >= (uintptr_t)this_ldi->ldinfo_textorg)
+ && (addr < ((uintptr_t)this_ldi->ldinfo_textorg +
+ this_ldi->ldinfo_textsize)))
+ || ((addr >= (uintptr_t)this_ldi->ldinfo_dataorg)
+ && (addr < ((uintptr_t)this_ldi->ldinfo_dataorg +
+ this_ldi->ldinfo_datasize)))) {
+ char *buffer, *member;
+ size_t buffer_sz, member_len;
+
+ buffer_sz = strlen(this_ldi->ldinfo_filename) + 1;
+ member = this_ldi->ldinfo_filename + buffer_sz;
+ if ((member_len = strlen(member)) > 0)
+ buffer_sz += 1 + member_len + 1;
+ found = 1;
+ if ((buffer = OPENSSL_malloc(buffer_sz)) != NULL) {
+ OPENSSL_strlcpy(buffer, this_ldi->ldinfo_filename, buffer_sz);
+ if (member_len > 0) {
+ /*
+ * Need to respect a possible member name and not just
+ * returning the path name in this case. See docs:
+ * sys/ldr.h, loadquery() and dlopen()/RTLD_MEMBER.
+ */
+ OPENSSL_strlcat(buffer, "(", buffer_sz);
+ OPENSSL_strlcat(buffer, member, buffer_sz);
+ OPENSSL_strlcat(buffer, ")", buffer_sz);
+ }
+ dl->dli_fname = buffer;
+ } else {
+ errno = ENOMEM;
+ }
+ } else {
+ next_ldi = (struct ld_info *)((uintptr_t)this_ldi +
+ this_ldi->ldinfo_next);
+ }
+ } while (this_ldi->ldinfo_next && !found);
+ OPENSSL_free((void *)ldinfos);
+ return (found && dl->dli_fname != NULL);
+}
+# endif /* _AIX */
+
+static int dlfcn_pathbyaddr(void *addr, char *path, int sz)
+{
+# ifdef HAVE_DLINFO
+ Dl_info dli;
+ int len;
+
+ if (addr == NULL) {
+ union {
+ int (*f) (void *, char *, int);
+ void *p;
+ } t = {
+ dlfcn_pathbyaddr
+ };
+ addr = t.p;
+ }
+
+ if (dladdr(addr, &dli)) {
+ len = (int)strlen(dli.dli_fname);
+ if (sz <= 0) {
+# ifdef _AIX
+ OPENSSL_free((void *)dli.dli_fname);
+# endif
+ return len + 1;
+ }
+ if (len >= sz)
+ len = sz - 1;
+ memcpy(path, dli.dli_fname, len);
+ path[len++] = 0;
+# ifdef _AIX
+ OPENSSL_free((void *)dli.dli_fname);
+# endif
+ return len;
+ }
+
+ ERR_add_error_data(2, "dlfcn_pathbyaddr(): ", dlerror());
+# endif
+ return -1;
}
-#endif
-static int dlfcn_pathbyaddr(void *addr,char *path,int sz)
- {
- Dl_info dli;
- int len;
-
- if (addr == NULL) addr = dlfcn_pathbyaddr;
-
- if (dladdr(addr,&dli))
- {
- len = (int)strlen(dli.dli_fname);
- if (sz <= 0) return len+1;
- if (len >= sz) len=sz-1;
- memcpy(path,dli.dli_fname,len);
- path[len++]=0;
- return len;
- }
-
- ERR_add_error_data(4, "dlfcn_pathbyaddr(): ", dlerror());
- return -1;
- }
-#endif /* DSO_DLFCN */
+static void *dlfcn_globallookup(const char *name)
+{
+ void *ret = NULL, *handle = dlopen(NULL, RTLD_LAZY);
+
+ if (handle) {
+ ret = dlsym(handle, name);
+ dlclose(handle);
+ }
+
+ return ret;
+}
+#endif /* DSO_DLFCN */
projects / openssl.git / blobdiff