summaryrefslogtreecommitdiff
path: root/source4/lib/util/util.c
diff options
context:
space:
mode:
Diffstat (limited to 'source4/lib/util/util.c')
-rw-r--r--source4/lib/util/util.c608
1 files changed, 0 insertions, 608 deletions
diff --git a/source4/lib/util/util.c b/source4/lib/util/util.c
deleted file mode 100644
index 5fc785d642..0000000000
--- a/source4/lib/util/util.c
+++ /dev/null
@@ -1,608 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- Samba utility functions
- Copyright (C) Andrew Tridgell 1992-1998
- Copyright (C) Jeremy Allison 2001-2002
- Copyright (C) Simo Sorce 2001
- Copyright (C) Jim McDonough (jmcd@us.ibm.com) 2003.
- Copyright (C) James J Myers 2003
-
- 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/>.
-*/
-
-#include "includes.h"
-#include "system/network.h"
-#include "system/filesys.h"
-#include "system/locale.h"
-
-/**
- * @file
- * @brief Misc utility functions
- */
-
-/**
- Find a suitable temporary directory. The result should be copied immediately
- as it may be overwritten by a subsequent call.
-**/
-_PUBLIC_ const char *tmpdir(void)
-{
- char *p;
- if ((p = getenv("TMPDIR")))
- return p;
- return "/tmp";
-}
-
-
-/**
- Check if a file exists - call vfs_file_exist for samba files.
-**/
-_PUBLIC_ bool file_exist(const char *fname)
-{
- struct stat st;
-
- if (stat(fname, &st) != 0) {
- return false;
- }
-
- return ((S_ISREG(st.st_mode)) || (S_ISFIFO(st.st_mode)));
-}
-
-/**
- Check a files mod time.
-**/
-
-_PUBLIC_ time_t file_modtime(const char *fname)
-{
- struct stat st;
-
- if (stat(fname,&st) != 0)
- return(0);
-
- return(st.st_mtime);
-}
-
-/**
- Check if a directory exists.
-**/
-
-_PUBLIC_ bool directory_exist(const char *dname)
-{
- struct stat st;
- bool ret;
-
- if (stat(dname,&st) != 0) {
- return false;
- }
-
- ret = S_ISDIR(st.st_mode);
- if(!ret)
- errno = ENOTDIR;
- return ret;
-}
-
-/**
- * Try to create the specified directory if it didn't exist.
- *
- * @retval true if the directory already existed and has the right permissions
- * or was successfully created.
- */
-_PUBLIC_ bool directory_create_or_exist(const char *dname, uid_t uid,
- mode_t dir_perms)
-{
- mode_t old_umask;
- struct stat st;
-
- old_umask = umask(0);
- if (lstat(dname, &st) == -1) {
- if (errno == ENOENT) {
- /* Create directory */
- if (mkdir(dname, dir_perms) == -1) {
- DEBUG(0, ("error creating directory "
- "%s: %s\n", dname,
- strerror(errno)));
- umask(old_umask);
- return false;
- }
- } else {
- DEBUG(0, ("lstat failed on directory %s: %s\n",
- dname, strerror(errno)));
- umask(old_umask);
- return false;
- }
- } else {
- /* Check ownership and permission on existing directory */
- if (!S_ISDIR(st.st_mode)) {
- DEBUG(0, ("directory %s isn't a directory\n",
- dname));
- umask(old_umask);
- return false;
- }
- if ((st.st_uid != uid) ||
- ((st.st_mode & 0777) != dir_perms)) {
- DEBUG(0, ("invalid permissions on directory "
- "%s\n", dname));
- umask(old_umask);
- return false;
- }
- }
- return true;
-}
-
-
-/**
- Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
- else
- if SYSV use O_NDELAY
- if BSD use FNDELAY
-**/
-
-_PUBLIC_ int set_blocking(int fd, bool set)
-{
- int val;
-#ifdef O_NONBLOCK
-#define FLAG_TO_SET O_NONBLOCK
-#else
-#ifdef SYSV
-#define FLAG_TO_SET O_NDELAY
-#else /* BSD */
-#define FLAG_TO_SET FNDELAY
-#endif
-#endif
-
- if((val = fcntl(fd, F_GETFL, 0)) == -1)
- return -1;
- if(set) /* Turn blocking on - ie. clear nonblock flag */
- val &= ~FLAG_TO_SET;
- else
- val |= FLAG_TO_SET;
- return fcntl( fd, F_SETFL, val);
-#undef FLAG_TO_SET
-}
-
-
-/**
- Sleep for a specified number of milliseconds.
-**/
-
-_PUBLIC_ void msleep(unsigned int t)
-{
- struct timeval tval;
-
- tval.tv_sec = t/1000;
- tval.tv_usec = 1000*(t%1000);
- /* this should be the real select - do NOT replace
- with sys_select() */
- select(0,NULL,NULL,NULL,&tval);
-}
-
-/**
- Get my own name, return in malloc'ed storage.
-**/
-
-_PUBLIC_ char *get_myname(void)
-{
- char *hostname;
- char *p;
-
- hostname = (char *)malloc(MAXHOSTNAMELEN+1);
- *hostname = 0;
-
- /* get my host name */
- if (gethostname(hostname, MAXHOSTNAMELEN+1) == -1) {
- DEBUG(0,("gethostname failed\n"));
- return NULL;
- }
-
- /* Ensure null termination. */
- hostname[MAXHOSTNAMELEN] = '\0';
-
- /* split off any parts after an initial . */
- p = strchr(hostname, '.');
-
- if (p != NULL)
- *p = 0;
-
- return hostname;
-}
-
-/**
- Return true if a string could be a pure IP address.
-**/
-
-_PUBLIC_ bool is_ipaddress(const char *str)
-{
- bool pure_address = true;
- int i;
-
- if (str == NULL) return false;
-
- for (i=0; pure_address && str[i]; i++)
- if (!(isdigit((int)str[i]) || str[i] == '.'))
- pure_address = false;
-
- /* Check that a pure number is not misinterpreted as an IP */
- pure_address = pure_address && (strchr(str, '.') != NULL);
-
- return pure_address;
-}
-
-/**
- Interpret an internet address or name into an IP address in 4 byte form.
-**/
-_PUBLIC_ uint32_t interpret_addr(const char *str)
-{
- struct hostent *hp;
- uint32_t res;
-
- if (str == NULL || *str == 0 ||
- strcmp(str,"0.0.0.0") == 0) {
- return 0;
- }
- if (strcmp(str,"255.255.255.255") == 0) {
- return 0xFFFFFFFF;
- }
- /* recognise 'localhost' as a special name. This fixes problems with
- some hosts that don't have localhost in /etc/hosts */
- if (strcasecmp(str,"localhost") == 0) {
- str = "127.0.0.1";
- }
-
- /* if it's in the form of an IP address then get the lib to interpret it */
- if (is_ipaddress(str)) {
- res = inet_addr(str);
- } else {
- /* otherwise assume it's a network name of some sort and use
- sys_gethostbyname */
- if ((hp = sys_gethostbyname(str)) == 0) {
- DEBUG(3,("sys_gethostbyname: Unknown host. %s\n",str));
- return 0;
- }
-
- if(hp->h_addr == NULL) {
- DEBUG(3,("sys_gethostbyname: host address is invalid for host %s\n",str));
- return 0;
- }
- memcpy((char *)&res,(char *)hp->h_addr, 4);
- }
-
- if (res == (uint32_t)-1)
- return(0);
-
- return(res);
-}
-
-/**
- A convenient addition to interpret_addr().
-**/
-_PUBLIC_ struct in_addr interpret_addr2(const char *str)
-{
- struct in_addr ret;
- uint32_t a = interpret_addr(str);
- ret.s_addr = a;
- return ret;
-}
-
-/**
- Check if an IP is the 0.0.0.0.
-**/
-
-_PUBLIC_ bool is_zero_ip(struct in_addr ip)
-{
- return ip.s_addr == 0;
-}
-
-/**
- Are two IPs on the same subnet?
-**/
-
-_PUBLIC_ bool same_net(struct in_addr ip1, struct in_addr ip2, struct in_addr mask)
-{
- uint32_t net1,net2,nmask;
-
- nmask = ntohl(mask.s_addr);
- net1 = ntohl(ip1.s_addr);
- net2 = ntohl(ip2.s_addr);
-
- return((net1 & nmask) == (net2 & nmask));
-}
-
-
-/**
- Check if a process exists. Does this work on all unixes?
-**/
-
-_PUBLIC_ bool process_exists(pid_t pid)
-{
- /* Doing kill with a non-positive pid causes messages to be
- * sent to places we don't want. */
- SMB_ASSERT(pid > 0);
- return(kill(pid,0) == 0 || errno != ESRCH);
-}
-
-/**
- Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
- is dealt with in posix.c
-**/
-
-_PUBLIC_ bool fcntl_lock(int fd, int op, off_t offset, off_t count, int type)
-{
- struct flock lock;
- int ret;
-
- DEBUG(8,("fcntl_lock %d %d %.0f %.0f %d\n",fd,op,(double)offset,(double)count,type));
-
- lock.l_type = type;
- lock.l_whence = SEEK_SET;
- lock.l_start = offset;
- lock.l_len = count;
- lock.l_pid = 0;
-
- ret = fcntl(fd,op,&lock);
-
- if (ret == -1 && errno != 0)
- DEBUG(3,("fcntl_lock: fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
-
- /* a lock query */
- if (op == F_GETLK) {
- if ((ret != -1) &&
- (lock.l_type != F_UNLCK) &&
- (lock.l_pid != 0) &&
- (lock.l_pid != getpid())) {
- DEBUG(3,("fcntl_lock: fd %d is locked by pid %d\n",fd,(int)lock.l_pid));
- return true;
- }
-
- /* it must be not locked or locked by me */
- return false;
- }
-
- /* a lock set or unset */
- if (ret == -1) {
- DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
- (double)offset,(double)count,op,type,strerror(errno)));
- return false;
- }
-
- /* everything went OK */
- DEBUG(8,("fcntl_lock: Lock call successful\n"));
-
- return true;
-}
-
-
-static void print_asc(int level, const uint8_t *buf,int len)
-{
- int i;
- for (i=0;i<len;i++)
- DEBUGADD(level,("%c", isprint(buf[i])?buf[i]:'.'));
-}
-
-/**
- * Write dump of binary data to the log file.
- *
- * The data is only written if the log level is at least level.
- */
-static void _dump_data(int level, const uint8_t *buf, int len,
- bool omit_zero_bytes)
-{
- int i=0;
- const uint8_t empty[16];
- bool skipped = false;
-
- if (len<=0) return;
-
- if (!DEBUGLVL(level)) return;
-
- memset(&empty, '\0', 16);
-
- for (i=0;i<len;) {
-
- if (i%16 == 0) {
- if ((omit_zero_bytes == true) &&
- (i > 0) &&
- (len > i+16) &&
- (memcmp(&buf[i], &empty, 16) == 0))
- {
- i +=16;
- continue;
- }
-
- if (i<len) {
- DEBUGADD(level,("[%04X] ",i));
- }
- }
-
- DEBUGADD(level,("%02X ",(int)buf[i]));
- i++;
- if (i%8 == 0) DEBUGADD(level,(" "));
- if (i%16 == 0) {
-
- print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
- print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
-
- if ((omit_zero_bytes == true) &&
- (len > i+16) &&
- (memcmp(&buf[i], &empty, 16) == 0)) {
- if (!skipped) {
- DEBUGADD(level,("skipping zero buffer bytes\n"));
- skipped = true;
- }
- }
- }
- }
-
- if (i%16) {
- int n;
- n = 16 - (i%16);
- DEBUGADD(level,(" "));
- if (n>8) DEBUGADD(level,(" "));
- while (n--) DEBUGADD(level,(" "));
- n = MIN(8,i%16);
- print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
- n = (i%16) - n;
- if (n>0) print_asc(level,&buf[i-n],n);
- DEBUGADD(level,("\n"));
- }
-
-}
-
-/**
- * Write dump of binary data to the log file.
- *
- * The data is only written if the log level is at least level.
- */
-_PUBLIC_ void dump_data(int level, const uint8_t *buf, int len)
-{
- _dump_data(level, buf, len, false);
-}
-
-/**
- * Write dump of binary data to the log file.
- *
- * The data is only written if the log level is at least level.
- * 16 zero bytes in a row are ommited
- */
-_PUBLIC_ void dump_data_skip_zeros(int level, const uint8_t *buf, int len)
-{
- _dump_data(level, buf, len, true);
-}
-
-
-/**
- malloc that aborts with smb_panic on fail or zero size.
-**/
-
-_PUBLIC_ void *smb_xmalloc(size_t size)
-{
- void *p;
- if (size == 0)
- smb_panic("smb_xmalloc: called with zero size.\n");
- if ((p = malloc(size)) == NULL)
- smb_panic("smb_xmalloc: malloc fail.\n");
- return p;
-}
-
-/**
- Memdup with smb_panic on fail.
-**/
-
-_PUBLIC_ void *smb_xmemdup(const void *p, size_t size)
-{
- void *p2;
- p2 = smb_xmalloc(size);
- memcpy(p2, p, size);
- return p2;
-}
-
-/**
- strdup that aborts on malloc fail.
-**/
-
-_PUBLIC_ char *smb_xstrdup(const char *s)
-{
- char *s1 = strdup(s);
- if (!s1)
- smb_panic("smb_xstrdup: malloc fail\n");
- return s1;
-}
-
-
-/**
- Like strdup but for memory.
-**/
-
-_PUBLIC_ void *memdup(const void *p, size_t size)
-{
- void *p2;
- if (size == 0)
- return NULL;
- p2 = malloc(size);
- if (!p2)
- return NULL;
- memcpy(p2, p, size);
- return p2;
-}
-
-/**
- * Write a password to the log file.
- *
- * @note Only actually does something if DEBUG_PASSWORD was defined during
- * compile-time.
- */
-_PUBLIC_ void dump_data_pw(const char *msg, const uint8_t * data, size_t len)
-{
-#ifdef DEBUG_PASSWORD
- DEBUG(11, ("%s", msg));
- if (data != NULL && len > 0)
- {
- dump_data(11, data, len);
- }
-#endif
-}
-
-
-/**
- * see if a range of memory is all zero. A NULL pointer is considered
- * to be all zero
- */
-_PUBLIC_ bool all_zero(const uint8_t *ptr, size_t size)
-{
- int i;
- if (!ptr) return true;
- for (i=0;i<size;i++) {
- if (ptr[i]) return false;
- }
- return true;
-}
-
-/**
- realloc an array, checking for integer overflow in the array size
-*/
-_PUBLIC_ void *realloc_array(void *ptr, size_t el_size, unsigned count)
-{
-#define MAX_MALLOC_SIZE 0x7fffffff
- if (count == 0 ||
- count >= MAX_MALLOC_SIZE/el_size) {
- return NULL;
- }
- if (!ptr) {
- return malloc(el_size * count);
- }
- return realloc(ptr, el_size * count);
-}
-
-/****************************************************************************
- Type-safe malloc.
-****************************************************************************/
-
-void *malloc_array(size_t el_size, unsigned int count)
-{
- return realloc_array(NULL, el_size, count);
-}
-
-_PUBLIC_ void *talloc_check_name_abort(const void *ptr, const char *name)
-{
- void *result;
-
- result = talloc_check_name(ptr, name);
- if (result != NULL)
- return result;
-
- DEBUG(0, ("Talloc type mismatch, expected %s, got %s\n",
- name, talloc_get_name(ptr)));
- smb_panic("talloc type mismatch");
- /* Keep the compiler happy */
- return NULL;
-}
-
generated by cgit (git 2.34.1) at 2024-06-12 16:10:43 +0000