osaf/libs/core/common/Makefile.am | 1 +
osaf/libs/core/common/include/osaf_extended_name.h | 232 +++++++++++++++++++++
osaf/libs/core/common/osaf_extended_name.c | 184 ++++++++++++++++
osaf/libs/core/leap/sysf_def.c | 3 +
4 files changed, 420 insertions(+), 0 deletions(-)
These library functions are primarily intended to be used in agent libraries,
to handle the old SAF APIs that still are using the SaNameT type.
diff --git a/osaf/libs/core/common/Makefile.am
b/osaf/libs/core/common/Makefile.am
--- a/osaf/libs/core/common/Makefile.am
+++ b/osaf/libs/core/common/Makefile.am
@@ -34,6 +34,7 @@ libopensaf_common_la_SOURCES = \
osaf_utility.c \
osaf_poll.c \
osaf_time.c \
+ osaf_extended_name.c \
nid_start_util.c \
saf_edu.c \
daemon.c \
diff --git a/osaf/libs/core/common/include/osaf_extended_name.h
b/osaf/libs/core/common/include/osaf_extended_name.h
new file mode 100644
--- /dev/null
+++ b/osaf/libs/core/common/include/osaf_extended_name.h
@@ -0,0 +1,232 @@
+/* -*- OpenSAF -*-
+ *
+ * (C) Copyright 2014 The OpenSAF Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. This file and program are licensed
+ * under the GNU Lesser General Public License Version 2.1, February 1999.
+ * The complete license can be accessed from the following location:
+ * http://opensource.org/licenses/lgpl-license.php
+ * See the Copying file included with the OpenSAF distribution for full
+ * licensing terms.
+ *
+ * Author(s): Ericsson AB
+ *
+ */
+
+/** @file
+ *
+ * This file contains functions to support tunneling strings through the legacy
+ * SaNameT structure. The definitions in this file are for internal use within
+ * OpenSAF only, and are intended to be used by the agent libraries to support
+ * legacy SAF API functions that have SaNameT parameters.
+ */
+
+#ifndef OPENSAF_OSAF_LIBS_CORE_COMMON_INCLUDE_OSAF_EXTENDED_NAME_H_
+#define OPENSAF_OSAF_LIBS_CORE_COMMON_INCLUDE_OSAF_EXTENDED_NAME_H_
+
+#include <stddef.h>
+#include <stdbool.h>
+#include "saAis.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum {
+ /**
+ * Magic number stored in the .length field (the first 16-bit word) of the
+ * legacy SaNameT type, to indicate that it contains a string longer than or
+ * equal to SA_MAX_UNEXTENDED_NAME_LENGTH bytes. A pointer to the string is
+ * stored immediately after the first 16-bit word (typically in the first
+ * four or eight bytes of the .value field of the legacy SaNameT type.
+ */
+ kExtendedNameMagic = 0xcd2b,
+
+ /**
+ * Maximum length of a distinguished name, not counting the terminating NUL
+ * character.
+ */
+ kMaxDnLength = 2048
+};
+
+/**
+ * @brief Initialize the extended SaNameT functionality.
+ *
+ * This function reads the environment variable SA_ENABLE_EXTENDED_NAMES to
+ * determine whether extended SaNameT shall be enabled or not. It shall be
+ * called by all top-level saXxxInitialize() functions, so that it is
+ * guaranteed to have been called before any other SAF API function.
+ */
+void osaf_extended_name_init(void);
+
+/**
+ * @brief Check whether extended SaNameT is enabled.
+ *
+ * This function returns true if extended SaNameT is enabled, and false
+ * otherwise. The function osaf_extended_name_init() must have been called
+ * prior to calling this function.
+ */
+static inline bool osaf_is_extended_names_enabled(void);
+
+/**
+ * @brief Set the string pointer in the legacy SaNameT type.
+ *
+ * This function sets the legacy SaNameT @a name to the NUL-terminated string
+ * @a value. If length of the string @a value is strictly less than
+ * SA_MAX_UNEXTENDED_NAME_LENGTH bytes, the contents of the string is copied
+ * into the legacy SaNameT type and can be read in a backwards compatible way
+ * by legacy applications. If length of the string @a value is greater than or
+ * equal to SA_MAX_UNEXTENDED_NAME_LENGTH, no copying is performed. Instead, a
+ * reference to the original string @a value is stored in @a name. In this
+ * case, it is important that @a value is not modified or freed until @a name
+ * is either overwritten or freed.
+ */
+void osaf_extended_name_lend(SaConstStringT value, SaNameT* name);
+
+/**
+ * @brief Get a pointer to the string in the legacy SaNameT type.
+ *
+ * This function returns a pointer to the string value in the legacy SaNameT
@a
+ * name. If the .length field of the legacy SaNameT structure is not equal to
+ * the magic number @a kExtendedNameMagic, the returned pointer points to a
+ * copy of the string stored inside @a name. Otherwise, the returned pointer
+ * points to memory outside @a name.
+ *
+ * NOTE: This function is intended to be used in agent libraries to read
+ * SaNameT structures that may have been set by legacy application
+ * code. Therefore, the returned string pointer is not guaranteed to be NUL
+ * terminated. To get NUL-terminated string, you can do the following: use
+ * osaf_extended_name_length() to calculate the length of the string, call
+ * malloc() to allocate a memory area that is one byte larger than the string
+ * length, then use memcpy() to copy the string to the allocated memory, and
+ * finally add a NUL character at the end of the copied string.
+ */
+SaConstStringT osaf_extended_name_borrow(const SaNameT* name);
+
+/**
+ * @brief Check if an SaNameT is in using the extended (long) format.
+ *
+ * This function returns true if the SaNameT @a name is using the new extended
+ * (long) format where the SaNameT structure contains a pointer to the string,
+ * and false if @a name is using the legacy format where a copy of the string
+ * is stored inside the SaNameT structure.
+ */
+bool osaf_is_an_extended_name(const SaNameT* name);
+
+/**
+ * @brief Check if an SaNameT passes some sanity checks.
+ *
+ * This function returns true if the SaNameT @a name passes some sanity
checks,
+ * e.g. that the length field is either equal to the magic number @a
+ * kExtendedNameMagic, or strictly less than SA_MAX_UNEXTENDED_NAME_LENGTH. It
+ * returns false if @a name failed some of the sanity checks. It may of course
+ * also crash the process if @a name is severly corrupted, e.g. if the pointer
+ * stored inside @a name points to inaccessible memory.
+ *
+ * NOTE: This function is intended to be used in agent libraries to read
+ * SaNameT structures that may have been set by legacy application
+ * code. Therefore, it does not require the string to be NUL terminated if it
+ * is stored in the legacy (short) format.
+ */
+bool osaf_is_extended_name_valid(const SaNameT* name);
+
+/**
+ * @brief Check if an SaNameT contains the empty string.
+ *
+ * This function works also with legacy SaNameT structures containing a string
+ * that is not NUL-terminated, and strings where there is a mismatch between
+ * the string length as indicated by the .length field an any NUL character
+ * contained in the string. It is equivalent to checking if the result of
+ * osaf_extended_name_length() is equal to zero, but may execute faster.
+ */
+bool osaf_is_extended_name_empty(const SaNameT* name);
+
+/**
+ * @brief Calculate the length of an SaNameT.
+ *
+ * This function returns the length of the SaNameT @a name. It may abort the
+ * process if @a name is not valid, but the sanity checks in this function are
+ * guaranteed to be no stricter than the checks in the
+ * osaf_is_extended_name_valid() function.
+ *
+ * This function works also with legacy SaNameT structures containing a string
+ * that is not NUL-terminated, and strings where there is a mismatch between
+ * the string length as indicated by the .length field an any NUL character
+ * contained in the string (in which case the shortest of the two string
+ * lengths is returned).
+ */
+size_t osaf_extended_name_length(const SaNameT* name);
+
+/**
+ * @brief Set an SaNameT to the empty string.
+ *
+ * This function sets @a name to the empty string, i.e. a string of length
+ * zero.
+ */
+void osaf_extended_name_clear(SaNameT* name);
+
+/**
+ * @brief Move a dynamically allocated string into an SaNameT structure.
+ *
+ * This function sets the SaNameT structure @a name to point to the
dynamically
+ * allocated string @a value. The string @a value must have been dynamically
+ * allocated using malloc(), calloc(), strdup() or a similar function. When
+ * this function returns, the original string pointer @a value is no longer
+ * valid and must not be used. When the SaNameT structure @a name is no longer
+ * needed, the dynamically allocated memory must be freed by a call to
+ * osaf_extended_name_free().
+ *
+ * This function works also in the case when @a value is a NULL pointer, in
+ * which case it simply calls osaf_extended_name_clear().
+ */
+void osaf_extended_name_steal(SaStringT value, SaNameT* name);
+
+/**
+ * @brief Make a copy of a string and store it in an SaNameT structure.
+ *
+ * This function sets @a name to point to a newly allocated copy of the string
+ * @a value. When the SaNameT structure @a name is no longer needed, the
+ * dynamically allocated memory must be freed by a call to
+ * osaf_extended_name_free().
+ *
+ * When the length of the string is strictly less than
+ * SA_MAX_UNEXTENDED_NAME_LENGTH, the SaNameT structure can be used in a
+ * backwards compatible way by legacy applications that do not understand the
+ * new extended SaNameT format.
+ *
+ * This function works also in the case when @a value is a NULL pointer, in
+ * which case it simply calls osaf_extended_name_clear().
+ */
+void osaf_extended_name_alloc(SaConstStringT value, SaNameT* name);
+
+/**
+ * @brief Free dynamically allocated memory pointed to by an SaNameT.
+ *
+ * This function checks if the SaNameT @a name contains a pointer (i.e. is
+ * using the new extended format), and if so, it will call free() to release
+ * the dynamically allocated memory referenced by this SaNameT. When this
+ * function returns, @a name is no longer valid and must not be used (until it
+ * is re-initialized).
+ *
+ * When the length of the string is strictly less than
+ * SA_MAX_UNEXTENDED_NAME_LENGTH, the SaNameT structure can be used in a
+ * backwards compatible way by legacy applications that do not understand the
+ * new extended SaNameT format.
+ *
+ * This function works also in the case when @a name is a NULL pointer, in
+ * which case it does nothing.
+ */
+void osaf_extended_name_free(SaNameT* name);
+
+static inline bool osaf_is_extended_names_enabled(void) {
+ extern bool osaf_extended_names_enabled;
+ return osaf_extended_names_enabled;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* OPENSAF_OSAF_LIBS_CORE_COMMON_INCLUDE_OSAF_EXTENDED_NAME_H_ */
diff --git a/osaf/libs/core/common/osaf_extended_name.c
b/osaf/libs/core/common/osaf_extended_name.c
new file mode 100644
--- /dev/null
+++ b/osaf/libs/core/common/osaf_extended_name.c
@@ -0,0 +1,184 @@
+/* -*- OpenSAF -*-
+ *
+ * (C) Copyright 2014 The OpenSAF Foundation
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. This file and program are licensed
+ * under the GNU Lesser General Public License Version 2.1, February 1999.
+ * The complete license can be accessed from the following location:
+ * http://opensource.org/licenses/lgpl-license.php
+ * See the Copying file included with the OpenSAF distribution for full
+ * licensing terms.
+ *
+ * Author(s): Ericsson AB
+ *
+ */
+
+#ifndef SA_EXTENDED_NAME_SOURCE
+#define SA_EXTENDED_NAME_SOURCE
+#endif
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <string.h>
+#include "osaf_extended_name.h"
+#include "ncsgl_defs.h"
+
+static inline SaConstStringT get_ptr(const SaNameT* name);
+static inline void set_ptr(SaConstStringT value, SaNameT* name);
+
+bool osaf_extended_names_enabled = false;
+static bool extended_names_initialized = false;
+
+static inline SaConstStringT get_ptr(const SaNameT* name)
+{
+ union {
+ SaConstStringT pointer;
+ SaUint8T bytes[sizeof(SaConstStringT)];
+ } tmp;
+ memcpy(tmp.bytes, name->_opaque + 1, sizeof(SaConstStringT));
+ return tmp.pointer;
+}
+
+static inline void set_ptr(SaConstStringT value, SaNameT* name)
+{
+ union {
+ SaConstStringT pointer;
+ SaUint8T bytes[sizeof(SaConstStringT)];
+ } tmp;
+ tmp.pointer = value;
+ name->_opaque[0] = kExtendedNameMagic;
+ memcpy(name->_opaque + 1, tmp.bytes, sizeof(SaConstStringT));
+}
+
+void osaf_extended_name_init(void)
+{
+ if (!extended_names_initialized) {
+ char* enable = getenv("SA_ENABLE_EXTENDED_NAMES");
+ if (enable != NULL && enable[0] == '1' && enable[1] == '\0') {
+ osaf_extended_names_enabled = true;
+ } else {
+ osaf_extended_names_enabled = false;
+ }
+ extended_names_initialized = true;
+ }
+}
+
+void osaf_extended_name_lend(SaConstStringT value, SaNameT* name)
+{
+ size_t length = strlen(value);
+ if (length < SA_MAX_UNEXTENDED_NAME_LENGTH) {
+ name->_opaque[0] = length;
+ memcpy(name->_opaque + 1, value, length + 1);
+ } else {
+ set_ptr(value, name);
+ }
+}
+
+SaConstStringT osaf_extended_name_borrow(const SaNameT* name)
+{
+ size_t length = name->_opaque[0];
+ SaConstStringT value;
+ if (length != kExtendedNameMagic) {
+ value = (SaConstStringT) (name->_opaque + 1);
+ } else {
+ value = get_ptr(name);
+ }
+ return value;
+}
+
+bool osaf_is_an_extended_name(const SaNameT* name)
+{
+ return name->_opaque[0] == kExtendedNameMagic;
+}
+
+bool osaf_is_extended_name_valid(const SaNameT* name)
+{
+ size_t length = name->_opaque[0];
+ bool is_valid;
+ if (length != kExtendedNameMagic) {
+ is_valid = length < SA_MAX_UNEXTENDED_NAME_LENGTH;
+ } else {
+ is_valid = osaf_extended_names_enabled &&
+ strnlen(get_ptr(name), SA_MAX_UNEXTENDED_NAME_LENGTH) >=
+ SA_MAX_UNEXTENDED_NAME_LENGTH;
+ }
+ return is_valid;
+}
+
+bool osaf_is_extended_name_empty(const SaNameT* name)
+{
+ size_t length = name->_opaque[0];
+ bool is_empty;
+ if (length != kExtendedNameMagic) {
+ is_empty = length == 0;
+ } else {
+ is_empty = *get_ptr(name) == '\0';
+ }
+ return is_empty;
+}
+
+size_t osaf_extended_name_length(const SaNameT* name)
+{
+ size_t length = name->_opaque[0];
+ if (length != kExtendedNameMagic) {
+ osafassert(length < SA_MAX_UNEXTENDED_NAME_LENGTH);
+ length = strnlen((const char*) (name->_opaque + 1), length);
+ } else {
+ length = strlen(get_ptr(name));
+ osafassert(osaf_extended_names_enabled &&
+ length >= SA_MAX_UNEXTENDED_NAME_LENGTH);
+ }
+ return length;
+}
+
+void osaf_extended_name_clear(SaNameT* name)
+{
+ name->_opaque[0] = 0;
+ memset(name->_opaque + 1, 0, sizeof(SaConstStringT));
+}
+
+void osaf_extended_name_steal(SaStringT value, SaNameT* name)
+{
+ if (value != NULL) {
+ size_t length = strlen(value);
+ if (length < SA_MAX_UNEXTENDED_NAME_LENGTH) {
+ name->_opaque[0] = length;
+ memcpy(name->_opaque + 1, value, length + 1);
+ free(value);
+ } else {
+ set_ptr(value, name);
+ }
+ } else {
+ osaf_extended_name_clear(name);
+ }
+}
+
+void osaf_extended_name_alloc(SaConstStringT value, SaNameT* name)
+{
+ if (value != NULL) {
+ size_t length = strlen(value);
+ void* pointer;
+ if (length < SA_MAX_UNEXTENDED_NAME_LENGTH) {
+ name->_opaque[0] = length;
+ pointer = name->_opaque + 1;
+ } else {
+ pointer = malloc(length + 1);
+ set_ptr(pointer, name);
+ }
+ memcpy(pointer, value, length + 1);
+ } else {
+ osaf_extended_name_clear(name);
+ }
+}
+
+void osaf_extended_name_free(SaNameT* name)
+{
+ if (name != NULL) {
+ if (name->_opaque[0] == kExtendedNameMagic) {
+ free((SaStringT*) get_ptr(name));
+ }
+ name->_opaque[0] = 0xffff;
+ memset(name->_opaque + 1, 0, sizeof(SaConstStringT));
+ }
+}
diff --git a/osaf/libs/core/leap/sysf_def.c b/osaf/libs/core/leap/sysf_def.c
--- a/osaf/libs/core/leap/sysf_def.c
+++ b/osaf/libs/core/leap/sysf_def.c
@@ -46,6 +46,7 @@
#include "ncssysfpool.h"
#include "sysf_exc_scr.h"
#include "usrbuf.h"
+#include "osaf_extended_name.h"
/**
* File descriptor pointing to /proc/sysrq-trigger. If a process wants to be
@@ -88,6 +89,8 @@ uint32_t leap_env_init(void)
TRACE("INITIALIZING LEAP ENVIRONMENT");
+ osaf_extended_name_init();
+
ncs_os_atomic_init();
#if (NCSL_ENV_INIT_TMR == 1)
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