From caa4e428604780bb098060f7286c69d30c8b4007 Mon Sep 17 00:00:00 2001 From: Jelmer Vernooij Date: Sat, 11 Oct 2008 21:05:38 +0200 Subject: Move lib/util from source4 to top-level libutil. Conflicts: source4/Makefile --- source4/lib/util/util.c | 608 ------------------------------------------------ 1 file changed, 608 deletions(-) delete mode 100644 source4/lib/util/util.c (limited to 'source4/lib/util/util.c') 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 . -*/ - -#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 0) && - (len > i+16) && - (memcmp(&buf[i], &empty, 16) == 0)) - { - i +=16; - continue; - } - - if (i 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= 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; -} - -- cgit