diff options
Diffstat (limited to 'src/3rd_party/dbus-1.7.8/dbus/dbus-sysdeps.c')
| -rw-r--r-- | src/3rd_party/dbus-1.7.8/dbus/dbus-sysdeps.c | 776 |
1 files changed, 0 insertions, 776 deletions
diff --git a/src/3rd_party/dbus-1.7.8/dbus/dbus-sysdeps.c b/src/3rd_party/dbus-1.7.8/dbus/dbus-sysdeps.c deleted file mode 100644 index de3a18cb97..0000000000 --- a/src/3rd_party/dbus-1.7.8/dbus/dbus-sysdeps.c +++ /dev/null @@ -1,776 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ -/* dbus-sysdeps.c Wrappers around system/libc features shared between UNIX and Windows (internal to D-Bus implementation) - * - * Copyright (C) 2002, 2003, 2006 Red Hat, Inc. - * Copyright (C) 2003 CodeFactory AB - * - * Licensed under the Academic Free License version 2.1 - * - * 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 2 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, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#include <config.h> -#include "dbus-internals.h" -#include "dbus-sysdeps.h" -#include "dbus-threads.h" -#include "dbus-protocol.h" -#include "dbus-string.h" -#include "dbus-list.h" -#include "dbus-misc.h" - -/* NOTE: If you include any unix/windows-specific headers here, you are probably doing something - * wrong and should be putting some code in dbus-sysdeps-unix.c or dbus-sysdeps-win.c. - * - * These are the standard ANSI C headers... - */ -#if HAVE_LOCALE_H -#include <locale.h> -#endif -#include <stdlib.h> -#include <string.h> -#include <stdio.h> - -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif - -#ifdef DBUS_WIN - #include <stdlib.h> -#elif (defined __APPLE__) -# include <crt_externs.h> -# define environ (*_NSGetEnviron()) -#else -extern char **environ; -#endif - -/** - * @defgroup DBusSysdeps Internal system-dependent API - * @ingroup DBusInternals - * @brief Internal system-dependent API available on UNIX and Windows - * - * The system-dependent API has a dual purpose. First, it encapsulates - * all usage of operating system APIs for ease of auditing and to - * avoid cluttering the rest of the code with bizarre OS quirks and - * headers. Second, it abstracts different operating system APIs for - * portability. - * - * @{ - */ - -/** - * Aborts the program with SIGABRT (dumping core). - */ -void -_dbus_abort (void) -{ - const char *s; - - _dbus_print_backtrace (); - - s = _dbus_getenv ("DBUS_BLOCK_ON_ABORT"); - if (s && *s) - { - /* don't use _dbus_warn here since it can _dbus_abort() */ - fprintf (stderr, " Process %lu sleeping for gdb attach\n", _dbus_pid_for_log ()); - _dbus_sleep_milliseconds (1000 * 180); - } - - abort (); - _dbus_exit (1); /* in case someone manages to ignore SIGABRT ? */ -} - -/** - * @ingroup DBusMisc - * - * Wrapper for setenv(). If the value is #NULL, unsets - * the environment variable. - * - * There is an unfixable memleak in that it is unsafe to - * free memory malloced for use with setenv. This is because - * we can not rely on internal implementation details of - * the underlying libc library. - * - * This function is not thread-safe, because altering the environment - * in Unix is not thread-safe in general. - * - * @param varname name of environment variable - * @param value value of environment variable, or #NULL to unset - * @returns #TRUE on success, #FALSE if not enough memory. - */ -dbus_bool_t -dbus_setenv (const char *varname, - const char *value) -{ - _dbus_assert (varname != NULL); - - if (value == NULL) - { -#ifdef HAVE_UNSETENV - unsetenv (varname); - return TRUE; -#else - char *putenv_value; - size_t len; - - len = strlen (varname); - - /* Use system malloc to avoid memleaks that dbus_malloc - * will get upset about. - */ - - putenv_value = malloc (len + 2); - if (putenv_value == NULL) - return FALSE; - - strcpy (putenv_value, varname); -#if defined(DBUS_WIN) - strcat (putenv_value, "="); -#endif - - return (putenv (putenv_value) == 0); -#endif - } - else - { -#ifdef HAVE_SETENV - return (setenv (varname, value, TRUE) == 0); -#else - char *putenv_value; - size_t len; - size_t varname_len; - size_t value_len; - - varname_len = strlen (varname); - value_len = strlen (value); - - len = varname_len + value_len + 1 /* '=' */ ; - - /* Use system malloc to avoid memleaks that dbus_malloc - * will get upset about. - */ - - putenv_value = malloc (len + 1); - if (putenv_value == NULL) - return FALSE; - - strcpy (putenv_value, varname); - strcpy (putenv_value + varname_len, "="); - strcpy (putenv_value + varname_len + 1, value); - - return (putenv (putenv_value) == 0); -#endif - } -} - -/** - * Wrapper for getenv(). - * - * @param varname name of environment variable - * @returns value of environment variable or #NULL if unset - */ -const char* -_dbus_getenv (const char *varname) -{ - /* Don't respect any environment variables if the current process is - * setuid. This is the equivalent of glibc's __secure_getenv(). - */ - if (_dbus_check_setuid ()) - return NULL; - return getenv (varname); -} - -/** - * Wrapper for clearenv(). - * - * @returns #TRUE on success. - */ -dbus_bool_t -_dbus_clearenv (void) -{ - dbus_bool_t rc = TRUE; - -#ifdef HAVE_CLEARENV - if (clearenv () != 0) - rc = FALSE; -#else - - if (environ != NULL) - environ[0] = NULL; -#endif - - return rc; -} - -/** - * Split paths into a list of char strings - * - * @param dirs string with pathes - * @param suffix string concated to each path in dirs - * @param dir_list contains a list of splitted pathes - * return #TRUE is pathes could be splittes,#FALSE in oom case - */ -dbus_bool_t -_dbus_split_paths_and_append (DBusString *dirs, - const char *suffix, - DBusList **dir_list) -{ - int start; - int i; - int len; - char *cpath; - DBusString file_suffix; - - start = 0; - i = 0; - - _dbus_string_init_const (&file_suffix, suffix); - - len = _dbus_string_get_length (dirs); - - while (_dbus_string_find (dirs, start, _DBUS_PATH_SEPARATOR, &i)) - { - DBusString path; - - if (!_dbus_string_init (&path)) - goto oom; - - if (!_dbus_string_copy_len (dirs, - start, - i - start, - &path, - 0)) - { - _dbus_string_free (&path); - goto oom; - } - - _dbus_string_chop_white (&path); - - /* check for an empty path */ - if (_dbus_string_get_length (&path) == 0) - goto next; - - if (!_dbus_concat_dir_and_file (&path, - &file_suffix)) - { - _dbus_string_free (&path); - goto oom; - } - - if (!_dbus_string_copy_data(&path, &cpath)) - { - _dbus_string_free (&path); - goto oom; - } - - if (!_dbus_list_append (dir_list, cpath)) - { - _dbus_string_free (&path); - dbus_free (cpath); - goto oom; - } - - next: - _dbus_string_free (&path); - start = i + 1; - } - - if (start != len) - { - DBusString path; - - if (!_dbus_string_init (&path)) - goto oom; - - if (!_dbus_string_copy_len (dirs, - start, - len - start, - &path, - 0)) - { - _dbus_string_free (&path); - goto oom; - } - - if (!_dbus_concat_dir_and_file (&path, - &file_suffix)) - { - _dbus_string_free (&path); - goto oom; - } - - if (!_dbus_string_copy_data(&path, &cpath)) - { - _dbus_string_free (&path); - goto oom; - } - - if (!_dbus_list_append (dir_list, cpath)) - { - _dbus_string_free (&path); - dbus_free (cpath); - goto oom; - } - - _dbus_string_free (&path); - } - - return TRUE; - - oom: - _dbus_list_foreach (dir_list, (DBusForeachFunction)dbus_free, NULL); - _dbus_list_clear (dir_list); - return FALSE; -} - -/** @} */ - -/** - * @addtogroup DBusString - * - * @{ - */ -/** - * Appends an integer to a DBusString. - * - * @param str the string - * @param value the integer value - * @returns #FALSE if not enough memory or other failure. - */ -dbus_bool_t -_dbus_string_append_int (DBusString *str, - long value) -{ - /* this calculation is from comp.lang.c faq */ -#define MAX_LONG_LEN ((sizeof (long) * 8 + 2) / 3 + 1) /* +1 for '-' */ - int orig_len; - int i; - char *buf; - - orig_len = _dbus_string_get_length (str); - - if (!_dbus_string_lengthen (str, MAX_LONG_LEN)) - return FALSE; - - buf = _dbus_string_get_data_len (str, orig_len, MAX_LONG_LEN); - - snprintf (buf, MAX_LONG_LEN, "%ld", value); - - i = 0; - while (*buf) - { - ++buf; - ++i; - } - - _dbus_string_shorten (str, MAX_LONG_LEN - i); - - return TRUE; -} - -/** - * Appends an unsigned integer to a DBusString. - * - * @param str the string - * @param value the integer value - * @returns #FALSE if not enough memory or other failure. - */ -dbus_bool_t -_dbus_string_append_uint (DBusString *str, - unsigned long value) -{ - /* this is wrong, but definitely on the high side. */ -#define MAX_ULONG_LEN (MAX_LONG_LEN * 2) - int orig_len; - int i; - char *buf; - - orig_len = _dbus_string_get_length (str); - - if (!_dbus_string_lengthen (str, MAX_ULONG_LEN)) - return FALSE; - - buf = _dbus_string_get_data_len (str, orig_len, MAX_ULONG_LEN); - - snprintf (buf, MAX_ULONG_LEN, "%lu", value); - - i = 0; - while (*buf) - { - ++buf; - ++i; - } - - _dbus_string_shorten (str, MAX_ULONG_LEN - i); - - return TRUE; -} - -/** - * Parses an integer contained in a DBusString. Either return parameter - * may be #NULL if you aren't interested in it. The integer is parsed - * and stored in value_return. Return parameters are not initialized - * if the function returns #FALSE. - * - * @param str the string - * @param start the byte index of the start of the integer - * @param value_return return location of the integer value or #NULL - * @param end_return return location of the end of the integer, or #NULL - * @returns #TRUE on success - */ -dbus_bool_t -_dbus_string_parse_int (const DBusString *str, - int start, - long *value_return, - int *end_return) -{ - long v; - const char *p; - char *end; - - p = _dbus_string_get_const_data_len (str, start, - _dbus_string_get_length (str) - start); - - end = NULL; - _dbus_set_errno_to_zero (); - v = strtol (p, &end, 0); - if (end == NULL || end == p || errno != 0) - return FALSE; - - if (value_return) - *value_return = v; - if (end_return) - *end_return = start + (end - p); - - return TRUE; -} - -/** - * Parses an unsigned integer contained in a DBusString. Either return - * parameter may be #NULL if you aren't interested in it. The integer - * is parsed and stored in value_return. Return parameters are not - * initialized if the function returns #FALSE. - * - * @param str the string - * @param start the byte index of the start of the integer - * @param value_return return location of the integer value or #NULL - * @param end_return return location of the end of the integer, or #NULL - * @returns #TRUE on success - */ -dbus_bool_t -_dbus_string_parse_uint (const DBusString *str, - int start, - unsigned long *value_return, - int *end_return) -{ - unsigned long v; - const char *p; - char *end; - - p = _dbus_string_get_const_data_len (str, start, - _dbus_string_get_length (str) - start); - - end = NULL; - _dbus_set_errno_to_zero (); - v = strtoul (p, &end, 0); - if (end == NULL || end == p || errno != 0) - return FALSE; - - if (value_return) - *value_return = v; - if (end_return) - *end_return = start + (end - p); - - return TRUE; -} - -/** @} */ /* DBusString group */ - -/** - * @addtogroup DBusInternalsUtils - * @{ - */ - -void -_dbus_generate_pseudorandom_bytes_buffer (char *buffer, - int n_bytes) -{ - long tv_usec; - int i; - - /* fall back to pseudorandom */ - _dbus_verbose ("Falling back to pseudorandom for %d bytes\n", - n_bytes); - - _dbus_get_real_time (NULL, &tv_usec); - srand (tv_usec); - - i = 0; - while (i < n_bytes) - { - double r; - unsigned int b; - - r = rand (); - b = (r / (double) RAND_MAX) * 255.0; - - buffer[i] = b; - - ++i; - } -} - -/** - * Fills n_bytes of the given buffer with random bytes. - * - * @param buffer an allocated buffer - * @param n_bytes the number of bytes in buffer to write to - */ -void -_dbus_generate_random_bytes_buffer (char *buffer, - int n_bytes) -{ - DBusString str; - - if (!_dbus_string_init (&str)) - { - _dbus_generate_pseudorandom_bytes_buffer (buffer, n_bytes); - return; - } - - if (!_dbus_generate_random_bytes (&str, n_bytes)) - { - _dbus_string_free (&str); - _dbus_generate_pseudorandom_bytes_buffer (buffer, n_bytes); - return; - } - - _dbus_string_copy_to_buffer (&str, buffer, n_bytes); - - _dbus_string_free (&str); -} - -/** - * Generates the given number of random bytes, where the bytes are - * chosen from the alphanumeric ASCII subset. - * - * @param str the string - * @param n_bytes the number of random ASCII bytes to append to string - * @returns #TRUE on success, #FALSE if no memory or other failure - */ -dbus_bool_t -_dbus_generate_random_ascii (DBusString *str, - int n_bytes) -{ - static const char letters[] = - "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz"; - int i; - int len; - - if (!_dbus_generate_random_bytes (str, n_bytes)) - return FALSE; - - len = _dbus_string_get_length (str); - i = len - n_bytes; - while (i < len) - { - _dbus_string_set_byte (str, i, - letters[_dbus_string_get_byte (str, i) % - (sizeof (letters) - 1)]); - - ++i; - } - - _dbus_assert (_dbus_string_validate_ascii (str, len - n_bytes, - n_bytes)); - - return TRUE; -} - -/** - * Converts a UNIX errno, or Windows errno or WinSock error value into - * a #DBusError name. - * - * @todo should cover more errnos, specifically those - * from open(). - * - * @param error_number the errno. - * @returns an error name - */ -const char* -_dbus_error_from_errno (int error_number) -{ - switch (error_number) - { - case 0: - return DBUS_ERROR_FAILED; - -#ifdef EPROTONOSUPPORT - case EPROTONOSUPPORT: - return DBUS_ERROR_NOT_SUPPORTED; -#elif defined(WSAEPROTONOSUPPORT) - case WSAEPROTONOSUPPORT: - return DBUS_ERROR_NOT_SUPPORTED; -#endif -#ifdef EAFNOSUPPORT - case EAFNOSUPPORT: - return DBUS_ERROR_NOT_SUPPORTED; -#elif defined(WSAEAFNOSUPPORT) - case WSAEAFNOSUPPORT: - return DBUS_ERROR_NOT_SUPPORTED; -#endif -#ifdef ENFILE - case ENFILE: - return DBUS_ERROR_LIMITS_EXCEEDED; /* kernel out of memory */ -#endif -#ifdef EMFILE - case EMFILE: - return DBUS_ERROR_LIMITS_EXCEEDED; -#endif -#ifdef EACCES - case EACCES: - return DBUS_ERROR_ACCESS_DENIED; -#endif -#ifdef EPERM - case EPERM: - return DBUS_ERROR_ACCESS_DENIED; -#endif -#ifdef ENOBUFS - case ENOBUFS: - return DBUS_ERROR_NO_MEMORY; -#endif -#ifdef ENOMEM - case ENOMEM: - return DBUS_ERROR_NO_MEMORY; -#endif -#ifdef ECONNREFUSED - case ECONNREFUSED: - return DBUS_ERROR_NO_SERVER; -#elif defined(WSAECONNREFUSED) - case WSAECONNREFUSED: - return DBUS_ERROR_NO_SERVER; -#endif -#ifdef ETIMEDOUT - case ETIMEDOUT: - return DBUS_ERROR_TIMEOUT; -#elif defined(WSAETIMEDOUT) - case WSAETIMEDOUT: - return DBUS_ERROR_TIMEOUT; -#endif -#ifdef ENETUNREACH - case ENETUNREACH: - return DBUS_ERROR_NO_NETWORK; -#elif defined(WSAENETUNREACH) - case WSAENETUNREACH: - return DBUS_ERROR_NO_NETWORK; -#endif -#ifdef EADDRINUSE - case EADDRINUSE: - return DBUS_ERROR_ADDRESS_IN_USE; -#elif defined(WSAEADDRINUSE) - case WSAEADDRINUSE: - return DBUS_ERROR_ADDRESS_IN_USE; -#endif -#ifdef EEXIST - case EEXIST: - return DBUS_ERROR_FILE_EXISTS; -#endif -#ifdef ENOENT - case ENOENT: - return DBUS_ERROR_FILE_NOT_FOUND; -#endif - } - - return DBUS_ERROR_FAILED; -} - -/** - * Converts the current system errno value into a #DBusError name. - * - * @returns an error name - */ -const char* -_dbus_error_from_system_errno (void) -{ - return _dbus_error_from_errno (errno); -} - -/** - * Assign 0 to the global errno variable - */ -void -_dbus_set_errno_to_zero (void) -{ -#ifdef DBUS_WINCE - SetLastError (0); -#else - errno = 0; -#endif -} - -/** - * See if errno is set - * @returns #TRUE if errno is not 0 - */ -dbus_bool_t -_dbus_get_is_errno_nonzero (void) -{ - return errno != 0; -} - -/** - * See if errno is ENOMEM - * @returns #TRUE if errno == ENOMEM - */ -dbus_bool_t -_dbus_get_is_errno_enomem (void) -{ - return errno == ENOMEM; -} - -/** - * See if errno is EINTR - * @returns #TRUE if errno == EINTR - */ -dbus_bool_t -_dbus_get_is_errno_eintr (void) -{ - return errno == EINTR; -} - -/** - * See if errno is EPIPE - * @returns #TRUE if errno == EPIPE - */ -dbus_bool_t -_dbus_get_is_errno_epipe (void) -{ - return errno == EPIPE; -} - -/** - * Get error message from errno - * @returns _dbus_strerror(errno) - */ -const char* -_dbus_strerror_from_errno (void) -{ - return _dbus_strerror (errno); -} - -/** @} end of sysdeps */ - -/* tests in dbus-sysdeps-util.c */ |