summaryrefslogtreecommitdiffstats
path: root/source4/scripting/python/samba/misc.py
Commit message (Expand)AuthorAgeFilesLines
* More formatting fixes, pointed out by pylint.Jelmer Vernooij2010-03-011-6/+6
* s4-python: add some helper for converting ldb_flag to textMatthieu Patou2010-01-211-0/+33
* s4: update setntacl and getntacl to select the adaquate backend (fs/tdb) for ...Matthieu Patou2010-01-211-120/+0
* s4: regroup gpo modification in one function, set acl on files accordingly wi...Matthieu Patou2010-01-211-0/+120
id='n30' href='#n30'>30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
/*
    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 <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <string.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 "config.h"

#include <talloc.h>
#include <tevent.h>
#include <ldb.h>

#ifndef HAVE_ERRNO_T
#define HAVE_ERRNO_T
typedef int errno_t;
#endif

#define _(STRING) gettext (STRING)

extern const char *debug_prg_name;
extern int debug_level;
extern int debug_timestamps;
extern int debug_to_file;
extern const char *debug_log_file;
void debug_fn(const char *format, ...);
errno_t set_debug_file_from_fd(const int fd);

#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},

/** \def DEBUG(level, body)
    \brief macro to generate debug messages

    \param level the debug level, please respect the following guidelines:
      - 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 { \
    if (level <= debug_level) { \
        if (debug_timestamps) { \
            time_t rightnow = time(NULL); \
            char stamp[25]; \
            memcpy(stamp, ctime(&rightnow), 24); \
            stamp[24] = '\0'; \
            debug_fn("(%s) [%s] [%s] (%d): ", \
                     stamp, debug_prg_name, __FUNCTION__, level); \
        } else { \
            debug_fn("[%s] [%s] (%d): ", \
                     debug_prg_name, __FUNCTION__, level); \
        } \
        debug_fn body; \
    } \
} 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 EOK 0

#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_CTX *_tmp_ctx = ptr; \
        ptr = NULL; \
        talloc_free(_tmp_ctx); \
    } 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 EIO; \
    } \
} while (0)

#define OUT_OF_ID_RANGE(id, min, max) \
    (id == 0 || (min && (id < min)) || (max && (id > max)))

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_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_UINT32_CHECK(dest, src, len, pctr) do { \
    if ((*(pctr) + sizeof(uint32_t)) > (len)) 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)) return EINVAL; \
    safealign_memcpy(dest, src, sizeof(int32_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);
int open_debug_file(void);
int rotate_debug_files(void);

/* from server.c */
struct main_context {
    struct tevent_context *event_ctx;
    struct confdb_ctx *confdb_ctx;
};

int die_if_parent_died(void);
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);

struct sss_names_ctx {
    char *re_pattern;
    char *fq_fmt;

    pcre *re;
};

int sss_names_init(TALLOC_CTX *mem_ctx,
                   struct confdb_ctx *cdb,
                   struct sss_names_ctx **out);

int sss_parse_name(TALLOC_CTX *memctx,
                   struct sss_names_ctx *snctx,
                   const char *orig, char **domain, char **name);

/* 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);

/* 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, char ***_list, int *size);

char **parse_args(const char *str);
#endif /* __SSSD_UTIL_H__ */