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|
/*
Authors:
Simo Sorce <ssorce@redhat.com>
Copyright (C) 2009 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
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. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SSSD_UTIL_H__
#define __SSSD_UTIL_H__
#include "config.h"
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <errno.h>
#include <libintl.h>
#include <limits.h>
#include <locale.h>
#include <time.h>
#include <pcre.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <talloc.h>
#include <tevent.h>
#include <ldb.h>
#include <dhash.h>
#include "util/atomic_io.h"
#include "util/util_errors.h"
#define _(STRING) gettext (STRING)
#define ENUM_INDICATOR "*"
#define CLEAR_MC_FLAG "clear_mc_flag"
extern const char *debug_prg_name;
extern int debug_level;
extern int debug_timestamps;
extern int debug_microseconds;
extern int debug_to_file;
extern const char *debug_log_file;
void debug_fn(const char *format, ...);
int debug_get_level(int old_level);
int debug_convert_old_level(int old_level);
errno_t set_debug_file_from_fd(const int fd);
#define SSSDBG_FATAL_FAILURE 0x0010 /* level 0 */
#define SSSDBG_CRIT_FAILURE 0x0020 /* level 1 */
#define SSSDBG_OP_FAILURE 0x0040 /* level 2 */
#define SSSDBG_MINOR_FAILURE 0x0080 /* level 3 */
#define SSSDBG_CONF_SETTINGS 0x0100 /* level 4 */
#define SSSDBG_FUNC_DATA 0x0200 /* level 5 */
#define SSSDBG_TRACE_FUNC 0x0400 /* level 6 */
#define SSSDBG_TRACE_LIBS 0x1000 /* level 7 */
#define SSSDBG_TRACE_INTERNAL 0x2000 /* level 8 */
#define SSSDBG_TRACE_ALL 0x4000 /* level 9 */
#define SSSDBG_IMPORTANT_INFO SSSDBG_OP_FAILURE
#define SSSDBG_INVALID -1
#define SSSDBG_UNRESOLVED 0
#define SSSDBG_MASK_ALL 0xFFF0 /* enable all debug levels */
#define SSSDBG_DEFAULT SSSDBG_FATAL_FAILURE
#define SSSDBG_TIMESTAMP_UNRESOLVED -1
#define SSSDBG_TIMESTAMP_DEFAULT 1
#define SSSDBG_MICROSECONDS_UNRESOLVED -1
#define SSSDBG_MICROSECONDS_DEFAULT 0
#define SSSD_DEBUG_OPTS \
{"debug-level", 'd', POPT_ARG_INT, &debug_level, 0, \
_("Debug level"), NULL}, \
{"debug-to-files", 'f', POPT_ARG_NONE, &debug_to_file, 0, \
_("Send the debug output to files instead of stderr"), NULL }, \
{"debug-timestamps", 0, POPT_ARG_INT, &debug_timestamps, 0, \
_("Add debug timestamps"), NULL}, \
{"debug-microseconds", 0, POPT_ARG_INT, &debug_microseconds, 0, \
_("Show timestamps with microseconds"), NULL},
/** \def DEBUG(level, body)
\brief macro to generate debug messages
\param level the debug level, please use one of the SSSDBG_* macros
Old format:
- 1 is for critical errors users may find it difficult to understand but
are still quite clear
- 2-4 is for stuff developers are interested in in general, but
shouldn't fill the screen with useless low level verbose stuff
- 5-6 is for errors you may want to track, but only if you explicitly
looking for additional clues
- 7-10 is for informational stuff
\param body the debug message you want to send, should end with \n
*/
#define DEBUG(level, body) do { \
int __debug_macro_newlevel = debug_get_level(level); \
if (DEBUG_IS_SET(__debug_macro_newlevel)) { \
if (debug_timestamps) { \
struct timeval __debug_macro_tv; \
struct tm *__debug_macro_tm; \
char __debug_macro_datetime[20]; \
int __debug_macro_year; \
gettimeofday(&__debug_macro_tv, NULL); \
__debug_macro_tm = localtime(&__debug_macro_tv.tv_sec); \
__debug_macro_year = __debug_macro_tm->tm_year + 1900; \
/* get date time without year */ \
memcpy(__debug_macro_datetime, ctime(&__debug_macro_tv.tv_sec), 19); \
__debug_macro_datetime[19] = '\0'; \
if (debug_microseconds) { \
debug_fn("(%s:%.6d %d) [%s] [%s] (%#.4x): ", \
__debug_macro_datetime, __debug_macro_tv.tv_usec, \
__debug_macro_year, debug_prg_name, \
__FUNCTION__, __debug_macro_newlevel); \
} else { \
debug_fn("(%s %d) [%s] [%s] (%#.4x): ", \
__debug_macro_datetime, __debug_macro_year, \
debug_prg_name, __FUNCTION__, __debug_macro_newlevel); \
} \
} else { \
debug_fn("[%s] [%s] (%#.4x): ", \
debug_prg_name, __FUNCTION__, __debug_macro_newlevel); \
} \
debug_fn body; \
} \
} while(0)
/** \def DEBUG_MSG(level, function, message)
\brief macro to generate debug messages with message from variable
\param level the debug level, please use one of the SSSDBG_* macros
\param function name of the function where DEBUG_MSG is called
\param message message to be send (should not end with \n)
*/
#define DEBUG_MSG(level, function, message) do { \
int __debug_macro_newlevel = debug_get_level(level); \
if (DEBUG_IS_SET(__debug_macro_newlevel)) { \
if (debug_timestamps) { \
struct timeval __debug_macro_tv; \
struct tm *__debug_macro_tm; \
char __debug_macro_datetime[20]; \
int __debug_macro_year; \
gettimeofday(&__debug_macro_tv, NULL); \
__debug_macro_tm = localtime(&__debug_macro_tv.tv_sec); \
__debug_macro_year = __debug_macro_tm->tm_year + 1900; \
/* get date time without year */ \
memcpy(__debug_macro_datetime, ctime(&__debug_macro_tv.tv_sec), 19); \
__debug_macro_datetime[19] = '\0'; \
if (debug_microseconds) { \
debug_fn("(%s:%.6d %d) [%s] [%s] (%#.4x): %s\n", \
__debug_macro_datetime, __debug_macro_tv.tv_usec, \
__debug_macro_year, debug_prg_name, \
function, __debug_macro_newlevel, message); \
} else { \
debug_fn("(%s %d) [%s] [%s] (%#.4x): %s\n", \
__debug_macro_datetime, __debug_macro_year, \
debug_prg_name, function, __debug_macro_newlevel, \
message); \
} \
} else { \
debug_fn("[%s] [%s] (%#.4x): %s\n", \
debug_prg_name, function, __debug_macro_newlevel, message); \
} \
} \
} while(0)
/** \def DEBUG_IS_SET(level)
\brief checks whether level (must be in new format) is set in debug_level
\param level the debug level, please use one of the SSSDBG*_ macros
*/
#define DEBUG_IS_SET(level) (debug_level & (level) || \
(debug_level == SSSDBG_UNRESOLVED && \
(level & (SSSDBG_FATAL_FAILURE | \
SSSDBG_CRIT_FAILURE))))
#define DEBUG_INIT(dbg_lvl) do { \
if (dbg_lvl != SSSDBG_INVALID) { \
debug_level = debug_convert_old_level(dbg_lvl); \
} else { \
debug_level = SSSDBG_UNRESOLVED; \
} \
\
talloc_set_log_fn(talloc_log_fn); \
} while (0)
#define PRINT(fmt, ...) fprintf(stdout, gettext(fmt), ##__VA_ARGS__)
#define ERROR(fmt, ...) fprintf(stderr, gettext(fmt), ##__VA_ARGS__)
#ifndef discard_const
#define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
#endif
#ifndef NULL
#define NULL 0
#endif
#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
#define SSSD_MAIN_OPTS SSSD_DEBUG_OPTS
#define FLAGS_NONE 0x0000
#define FLAGS_DAEMON 0x0001
#define FLAGS_INTERACTIVE 0x0002
#define FLAGS_PID_FILE 0x0004
#ifndef talloc_zfree
#define talloc_zfree(ptr) do { talloc_free(discard_const(ptr)); ptr = NULL; } while(0)
#endif
#ifndef discard_const_p
#if defined(__intptr_t_defined) || defined(HAVE_INTPTR_T)
# define discard_const_p(type, ptr) ((type *)((intptr_t)(ptr)))
#else
# define discard_const_p(type, ptr) ((type *)(ptr))
#endif
#endif
/* TODO: remove later
* These functions are available in the latest tevent and are the ones that
* should be used as tevent_req is rightfully opaque there */
#ifndef tevent_req_data
#define tevent_req_data(req, type) ((type *)req->private_state)
#define tevent_req_set_callback(req, func, data) \
do { req->async.fn = func; req->async.private_data = data; } while(0)
#define tevent_req_callback_data(req, type) ((type *)req->async.private_data)
#define tevent_req_notify_callback(req) \
do { \
if (req->async.fn != NULL) { \
req->async.fn(req); \
} \
} while(0)
/* noop */
#define tevent_loop_allow_nesting(x)
#endif
#define TEVENT_REQ_RETURN_ON_ERROR(req) do { \
enum tevent_req_state TRROEstate; \
uint64_t TRROEerr; \
\
if (tevent_req_is_error(req, &TRROEstate, &TRROEerr)) { \
if (TRROEstate == TEVENT_REQ_USER_ERROR) { \
return TRROEerr; \
} \
return ERR_INTERNAL; \
} \
} while (0)
#define OUT_OF_ID_RANGE(id, min, max) \
(id == 0 || (min && (id < min)) || (max && (id > max)))
#define SIZE_T_MAX ((size_t) -1)
#define SIZE_T_OVERFLOW(current, add) \
(((size_t)(add)) > (SIZE_T_MAX - ((size_t)(current))))
static inline void
safealign_memcpy(void *dest, const void *src, size_t n, size_t *counter)
{
memcpy(dest, src, n);
if (counter) {
*counter += n;
}
}
#define SAFEALIGN_SET_VALUE(dest, value, type, pctr) do { \
type CV_MACRO_val = (type)(value); \
safealign_memcpy(dest, &CV_MACRO_val, sizeof(type), pctr); \
} while(0)
#define SAFEALIGN_COPY_INT64(dest, src, pctr) \
safealign_memcpy(dest, src, sizeof(int64_t), pctr)
#define SAFEALIGN_SET_INT64(dest, value, pctr) \
SAFEALIGN_SET_VALUE(dest, value, int64_t, pctr)
#define SAFEALIGN_COPY_UINT32(dest, src, pctr) \
safealign_memcpy(dest, src, sizeof(uint32_t), pctr)
#define SAFEALIGN_SET_UINT32(dest, value, pctr) \
SAFEALIGN_SET_VALUE(dest, value, uint32_t, pctr)
#define SAFEALIGN_COPY_INT32(dest, src, pctr) \
safealign_memcpy(dest, src, sizeof(int32_t), pctr)
#define SAFEALIGN_SET_INT32(dest, value, pctr) \
SAFEALIGN_SET_VALUE(dest, value, int32_t, pctr)
#define SAFEALIGN_COPY_UINT16(dest, src, pctr) \
safealign_memcpy(dest, src, sizeof(uint16_t), pctr)
#define SAFEALIGN_SET_UINT16(dest, value, pctr) \
SAFEALIGN_SET_VALUE(dest, value, uint16_t, pctr)
#define SAFEALIGN_COPY_UINT32_CHECK(dest, src, len, pctr) do { \
if ((*(pctr) + sizeof(uint32_t)) > (len) || \
SIZE_T_OVERFLOW(*(pctr), sizeof(uint32_t))) return EINVAL; \
safealign_memcpy(dest, src, sizeof(uint32_t), pctr); \
} while(0)
#define SAFEALIGN_COPY_INT32_CHECK(dest, src, len, pctr) do { \
if ((*(pctr) + sizeof(int32_t)) > (len) || \
SIZE_T_OVERFLOW(*(pctr), sizeof(int32_t))) return EINVAL; \
safealign_memcpy(dest, src, sizeof(int32_t), pctr); \
} while(0)
#define SAFEALIGN_COPY_UINT16_CHECK(dest, src, len, pctr) do { \
if ((*(pctr) + sizeof(uint16_t)) > (len) || \
SIZE_T_OVERFLOW(*(pctr), sizeof(uint16_t))) return EINVAL; \
safealign_memcpy(dest, src, sizeof(uint16_t), pctr); \
} while(0)
#include "util/dlinklist.h"
/* From debug.c */
void ldb_debug_messages(void *context, enum ldb_debug_level level,
const char *fmt, va_list ap);
int open_debug_file_ex(const char *filename, FILE **filep, bool want_cloexec);
int open_debug_file(void);
int rotate_debug_files(void);
void talloc_log_fn(const char *msg);
/* From sss_log.c */
#define SSS_LOG_EMERG 0 /* system is unusable */
#define SSS_LOG_ALERT 1 /* action must be taken immediately */
#define SSS_LOG_CRIT 2 /* critical conditions */
#define SSS_LOG_ERR 3 /* error conditions */
#define SSS_LOG_WARNING 4 /* warning conditions */
#define SSS_LOG_NOTICE 5 /* normal but significant condition */
#define SSS_LOG_INFO 6 /* informational */
#define SSS_LOG_DEBUG 7 /* debug-level messages */
void sss_log(int priority, const char *format, ...);
/* from server.c */
struct main_context {
struct tevent_context *event_ctx;
struct confdb_ctx *confdb_ctx;
pid_t parent_pid;
};
int die_if_parent_died(void);
int pidfile(const char *path, const char *name);
int server_setup(const char *name, int flags,
const char *conf_entry,
struct main_context **main_ctx);
void server_loop(struct main_context *main_ctx);
void sig_term(int sig);
/* from signal.c */
#include <signal.h>
void BlockSignals(bool block, int signum);
void (*CatchSignal(int signum,void (*handler)(int )))(int);
void CatchChild(void);
void CatchChildLeaveStatus(void);
/* from memory.c */
typedef int (void_destructor_fn_t)(void *);
struct mem_holder {
void *mem;
void_destructor_fn_t *fn;
};
void *sss_mem_attach(TALLOC_CTX *mem_ctx,
void *ptr,
void_destructor_fn_t *fn);
int password_destructor(void *memctx);
/* from usertools.c */
char *get_username_from_uid(TALLOC_CTX *mem_ctx, uid_t uid);
char *get_uppercase_realm(TALLOC_CTX *memctx, const char *name);
struct sss_names_ctx {
char *re_pattern;
char *fq_fmt;
pcre *re;
};
int sss_names_init(TALLOC_CTX *mem_ctx,
struct confdb_ctx *cdb,
const char *domain,
struct sss_names_ctx **out);
int sss_parse_name(TALLOC_CTX *memctx,
struct sss_names_ctx *snctx,
const char *orig, char **domain, char **name);
char *
sss_get_cased_name(TALLOC_CTX *mem_ctx, const char *orig_name,
bool case_sensitive);
errno_t
sss_get_cased_name_list(TALLOC_CTX *mem_ctx, const char * const *orig,
bool case_sensitive, const char ***_cased);
/* from backup-file.c */
int backup_file(const char *src, int dbglvl);
/* from check_and_open.c */
enum check_file_type {
CHECK_DONT_CHECK_FILE_TYPE = -1,
CHECK_REG,
CHECK_DIR,
CHECK_CHR,
CHECK_BLK,
CHECK_FIFO,
CHECK_LNK,
CHECK_SOCK
};
/* check_file()
* Verify that a file has certain permissions and/or is of a certain
* file type. This function can be used to determine if a file is a
* symlink.
* Warning: use of this function implies a potential race condition
* Opening a file before or after checking it does NOT guarantee that
* it is still the same file. Additional checks should be performed
* on the caller_stat_buf to ensure that it has the same device and
* inode to minimize impact. Permission changes may have occurred,
* however.
*/
errno_t check_file(const char *filename, const int uid, const int gid,
const int mode, enum check_file_type type,
struct stat *caller_stat_buf, bool follow_symlink);
/* check_fd()
* Verify that an open file descriptor has certain permissions and/or
* is of a certain file type. This function CANNOT detect symlinks,
* as the file is already open and symlinks have been traversed. This
* is the safer way to perform file checks and should be preferred
* over check_file for nearly all situations.
*/
errno_t check_fd(int fd, const int uid, const int gid,
const int mode, enum check_file_type type,
struct stat *caller_stat_buf);
/* check_and_open_readonly()
* Utility function to open a file and verify that it has certain
* permissions and is of a certain file type. This function wraps
* check_fd(), and is considered race-condition safe.
*/
errno_t check_and_open_readonly(const char *filename, int *fd, const uid_t uid,
const gid_t gid, const mode_t mode,
enum check_file_type type);
/* from util.c */
int split_on_separator(TALLOC_CTX *mem_ctx, const char *str,
const char sep, bool trim, bool skip_empty,
char ***_list, int *size);
char **parse_args(const char *str);
errno_t sss_hash_create(TALLOC_CTX *mem_ctx,
unsigned long count,
hash_table_t **tbl);
errno_t sss_hash_create_ex(TALLOC_CTX *mem_ctx,
unsigned long count,
hash_table_t **tbl,
unsigned int directory_bits,
unsigned int segment_bits,
unsigned long min_load_factor,
unsigned long max_load_factor,
hash_delete_callback *delete_callback,
void *delete_private_data);
/* Copy a NULL-terminated string list
* Returns NULL on out of memory error or invalid input
*/
char **dup_string_list(TALLOC_CTX *memctx, const char **str_list);
/* Take two string lists (terminated on a NULL char*)
* and return up to three arrays of strings based on
* shared ownership.
*
* Pass NULL to any return type you don't care about
*/
errno_t diff_string_lists(TALLOC_CTX *memctx,
char **string1,
char **string2,
char ***string1_only,
char ***string2_only,
char ***both_strings);
/* Sanitize an input string (e.g. a username) for use in
* an LDAP/LDB filter
* Returns a newly-constructed string attached to mem_ctx
* It will fail only on an out of memory condition, where it
* will return ENOMEM.
*/
errno_t sss_filter_sanitize(TALLOC_CTX *mem_ctx,
const char *input,
char **sanitized);
char *
sss_escape_ip_address(TALLOC_CTX *mem_ctx, int family, const char *addr);
/* This function only removes first and last
* character if the first character was '['.
*
* NOTE: This means, that ipv6addr must NOT be followed
* by port number.
*/
errno_t
remove_ipv6_brackets(char *ipv6addr);
errno_t add_string_to_list(TALLOC_CTX *mem_ctx, const char *string,
char ***list_p);
bool string_in_list(const char *string, char **list, bool case_sensitive);
/**
* @brief Safely zero a segment of memory,
* prevents the compiler from optimizing out
*
* @param data The address of buffer to wipe
* @param s Size of the buffer
*/
void safezero(void *data, size_t size);
/* from sss_tc_utf8.c */
char *
sss_tc_utf8_str_tolower(TALLOC_CTX *mem_ctx, const char *s);
uint8_t *
sss_tc_utf8_tolower(TALLOC_CTX *mem_ctx, const uint8_t *s, size_t len, size_t *_nlen);
bool sss_string_equal(bool cs, const char *s1, const char *s2);
/* len includes terminating '\0' */
struct sized_string {
const char *str;
size_t len;
};
void to_sized_string(struct sized_string *out, const char *in);
/* form domain_info.c */
struct sss_domain_info *get_next_domain(struct sss_domain_info *domain,
bool descend);
struct sss_domain_info *find_subdomain_by_name(struct sss_domain_info *domain,
const char *name,
bool match_any);
struct sss_domain_info *new_subdomain(TALLOC_CTX *mem_ctx,
struct sss_domain_info *parent,
const char *name,
const char *realm,
const char *flat_name,
const char *id);
errno_t sssd_domain_init(TALLOC_CTX *mem_ctx,
struct confdb_ctx *cdb,
const char *domain_name,
const char *db_path,
struct sss_domain_info **_domain);
#define IS_SUBDOMAIN(dom) ((dom)->parent != NULL)
/* from util_lock.c */
errno_t sss_br_lock_file(int fd, size_t start, size_t len,
int num_tries, useconds_t wait);
/* from io.c */
int sss_open_cloexec(const char *pathname, int flags, int *ret);
int sss_openat_cloexec(int dir_fd, const char *pathname, int flags, int *ret);
/* Endianness-compatibility for systems running older versions of glibc */
#ifndef le32toh
#include <byteswap.h>
/* Copied from endian.h on glibc 2.15 */
#ifdef __USE_BSD
/* Conversion interfaces. */
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define le32toh(x) (x)
# define htole32(x) (x)
# else
# define le32toh(x) __bswap_32 (x)
# define htole32(x) __bswap_32 (x)
# endif
#endif /* __USE_BSD */
#endif /* le32toh */
#ifdef HAVE_PAC_RESPONDER
#define BUILD_WITH_PAC_RESPONDER true
#else
#define BUILD_WITH_PAC_RESPONDER false
#endif
#endif /* __SSSD_UTIL_H__ */
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