-/* -*- c-file-style: "linux" -*-
+/*
+ * Utility routines used in rsync.
*
- * Copyright (C) 1996-2000 by Andrew Tridgell
- * Copyright (C) Paul Mackerras 1996
- * Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
+ * Copyright (C) 1996-2000 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
+ * Copyright (C) 2003-2008 Wayne Davison
*
* 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
+ * 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,
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, visit the http://fsf.org website.
*/
-/**
- * @file
- *
- * Utilities used in rsync
- **/
-
#include "rsync.h"
+#include "ifuncs.h"
extern int verbose;
extern int dry_run;
extern int module_id;
extern int modify_window;
+extern int relative_paths;
+extern int human_readable;
+extern char *module_dir;
+extern unsigned int module_dirlen;
+extern mode_t orig_umask;
extern char *partial_dir;
-extern struct filter_list_struct server_filter_list;
+extern struct filter_list_struct daemon_filter_list;
int sanitize_paths = 0;
+char curr_dir[MAXPATHLEN];
+unsigned int curr_dir_len;
+int curr_dir_depth; /* This is only set for a sanitizing daemon. */
-
-/**
- * Set a fd into nonblocking mode
- **/
+/* Set a fd into nonblocking mode. */
void set_nonblocking(int fd)
{
int val;
- if ((val = fcntl(fd, F_GETFL, 0)) == -1)
+ if ((val = fcntl(fd, F_GETFL)) == -1)
return;
if (!(val & NONBLOCK_FLAG)) {
val |= NONBLOCK_FLAG;
}
}
-/**
- * Set a fd into blocking mode
- **/
+/* Set a fd into blocking mode. */
void set_blocking(int fd)
{
int val;
- if ((val = fcntl(fd, F_GETFL, 0)) == -1)
+ if ((val = fcntl(fd, F_GETFL)) == -1)
return;
if (val & NONBLOCK_FLAG) {
val &= ~NONBLOCK_FLAG;
}
}
-
/**
* Create a file descriptor pair - like pipe() but use socketpair if
* possible (because of blocking issues on pipes).
return ret;
}
-
-void print_child_argv(char **cmd)
+void print_child_argv(const char *prefix, char **cmd)
{
- rprintf(FINFO, "opening connection using ");
+ rprintf(FCLIENT, "%s ", prefix);
for (; *cmd; cmd++) {
/* Look for characters that ought to be quoted. This
* is not a great quoting algorithm, but it's
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"0123456789"
",.-_=+@/") != strlen(*cmd)) {
- rprintf(FINFO, "\"%s\" ", safe_fname(*cmd));
+ rprintf(FCLIENT, "\"%s\" ", *cmd);
} else {
- rprintf(FINFO, "%s ", safe_fname(*cmd));
+ rprintf(FCLIENT, "%s ", *cmd);
}
}
- rprintf(FINFO, "\n");
+ rprintf(FCLIENT, "\n");
}
-
-void out_of_memory(char *str)
+NORETURN void out_of_memory(const char *str)
{
- rprintf(FERROR, "ERROR: out of memory in %s\n", str);
+ rprintf(FERROR, "ERROR: out of memory in %s [%s]\n", str, who_am_i());
exit_cleanup(RERR_MALLOC);
}
-void overflow(char *str)
+NORETURN void overflow_exit(const char *str)
{
- rprintf(FERROR, "ERROR: buffer overflow in %s\n", str);
+ rprintf(FERROR, "ERROR: buffer overflow in %s [%s]\n", str, who_am_i());
exit_cleanup(RERR_MALLOC);
}
-
-
-int set_modtime(char *fname, time_t modtime)
+int set_modtime(const char *fname, time_t modtime, mode_t mode)
{
+#if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
+ if (S_ISLNK(mode))
+ return 1;
+#endif
+
if (verbose > 2) {
rprintf(FINFO, "set modtime of %s to (%ld) %s",
- safe_fname(fname), (long)modtime,
+ fname, (long)modtime,
asctime(localtime(&modtime)));
}
return 0;
{
-#ifdef HAVE_UTIMBUF
+#ifdef HAVE_UTIMES
+ struct timeval t[2];
+ t[0].tv_sec = time(NULL);
+ t[0].tv_usec = 0;
+ t[1].tv_sec = modtime;
+ t[1].tv_usec = 0;
+# ifdef HAVE_LUTIMES
+ if (S_ISLNK(mode)) {
+ if (lutimes(fname, t) < 0)
+ return errno == ENOSYS ? 1 : -1;
+ return 0;
+ }
+# endif
+ return utimes(fname, t);
+#elif defined HAVE_STRUCT_UTIMBUF
struct utimbuf tbuf;
tbuf.actime = time(NULL);
tbuf.modtime = modtime;
t[1] = modtime;
return utime(fname,t);
#else
- struct timeval t[2];
- t[0].tv_sec = time(NULL);
- t[0].tv_usec = 0;
- t[1].tv_sec = modtime;
- t[1].tv_usec = 0;
- return utimes(fname,t);
+#error No file-time-modification routine found!
#endif
}
}
+/* This creates a new directory with default permissions. Since there
+ * might be some directory-default permissions affecting this, we can't
+ * force the permissions directly using the original umask and mkdir(). */
+int mkdir_defmode(char *fname)
+{
+ int ret;
-/**
- Create any necessary directories in fname. Unfortunately we don't know
- what perms to give the directory when this is called so we need to rely
- on the umask
-**/
-int create_directory_path(char *fname, int base_umask)
+ umask(orig_umask);
+ ret = do_mkdir(fname, ACCESSPERMS);
+ umask(0);
+
+ return ret;
+}
+
+/* Create any necessary directories in fname. Any missing directories are
+ * created with default permissions. */
+int create_directory_path(char *fname)
{
char *p;
+ int ret = 0;
while (*fname == '/')
fname++;
while (strncmp(fname, "./", 2) == 0)
fname += 2;
+ umask(orig_umask);
p = fname;
while ((p = strchr(p,'/')) != NULL) {
- *p = 0;
- do_mkdir(fname, 0777 & ~base_umask);
- *p = '/';
- p++;
+ *p = '\0';
+ if (do_mkdir(fname, ACCESSPERMS) < 0 && errno != EEXIST)
+ ret = -1;
+ *p++ = '/';
}
- return 0;
-}
+ umask(0);
+ return ret;
+}
/**
* Write @p len bytes at @p ptr to descriptor @p desc, retrying if
*
* Derived from GNU C's cccp.c.
*/
-int full_write(int desc, char *ptr, size_t len)
+int full_write(int desc, const char *ptr, size_t len)
{
int total_written;
return total_written;
}
-
/**
* Read @p len bytes at @p ptr from descriptor @p desc, retrying if
* interrupted.
return n_chars;
}
-
-/** Copy a file.
+/* Copy a file. If ofd < 0, copy_file unlinks and opens the "dest" file.
+ * Otherwise, it just writes to and closes the provided file descriptor.
*
* This is used in conjunction with the --temp-dir, --backup, and
* --copy-dest options. */
-int copy_file(char *source, char *dest, mode_t mode)
+int copy_file(const char *source, const char *dest, int ofd,
+ mode_t mode, int create_bak_dir)
{
int ifd;
- int ofd;
char buf[1024 * 8];
int len; /* Number of bytes read into `buf'. */
- ifd = do_open(source, O_RDONLY, 0);
- if (ifd == -1) {
- rsyserr(FERROR, errno, "open %s", full_fname(source));
+ if ((ifd = do_open(source, O_RDONLY, 0)) < 0) {
+ int save_errno = errno;
+ rsyserr(FERROR_XFER, errno, "open %s", full_fname(source));
+ errno = save_errno;
return -1;
}
- if (robust_unlink(dest) && errno != ENOENT) {
- rsyserr(FERROR, errno, "unlink %s", full_fname(dest));
- return -1;
- }
+ if (ofd < 0) {
+ if (robust_unlink(dest) && errno != ENOENT) {
+ int save_errno = errno;
+ rsyserr(FERROR_XFER, errno, "unlink %s", full_fname(dest));
+ errno = save_errno;
+ return -1;
+ }
- ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode);
- if (ofd == -1) {
- rsyserr(FERROR, errno, "open %s", full_fname(dest));
- close(ifd);
- return -1;
+ if ((ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode)) < 0) {
+ int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
+ if (create_bak_dir && errno == ENOENT && make_bak_dir(dest) == 0) {
+ if ((ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode)) < 0)
+ save_errno = errno ? errno : save_errno;
+ else
+ save_errno = 0;
+ }
+ if (save_errno) {
+ rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(dest));
+ close(ifd);
+ errno = save_errno;
+ return -1;
+ }
+ }
}
while ((len = safe_read(ifd, buf, sizeof buf)) > 0) {
if (full_write(ofd, buf, len) < 0) {
- rsyserr(FERROR, errno, "write %s", full_fname(dest));
+ int save_errno = errno;
+ rsyserr(FERROR_XFER, errno, "write %s", full_fname(dest));
close(ifd);
close(ofd);
+ errno = save_errno;
return -1;
}
}
if (len < 0) {
- rsyserr(FERROR, errno, "read %s", full_fname(source));
+ int save_errno = errno;
+ rsyserr(FERROR_XFER, errno, "read %s", full_fname(source));
close(ifd);
close(ofd);
+ errno = save_errno;
return -1;
}
if (close(ifd) < 0) {
- rsyserr(FINFO, errno, "close failed on %s",
+ rsyserr(FWARNING, errno, "close failed on %s",
full_fname(source));
}
if (close(ofd) < 0) {
- rsyserr(FERROR, errno, "close failed on %s",
+ int save_errno = errno;
+ rsyserr(FERROR_XFER, errno, "close failed on %s",
full_fname(dest));
+ errno = save_errno;
return -1;
}
* --delete trying to remove old .rsyncNNN files, hence it renames it
* each time.
**/
-int robust_unlink(char *fname)
+int robust_unlink(const char *fname)
{
#ifndef ETXTBSY
return do_unlink(fname);
/* start where the last one left off to reduce chance of clashes */
start = counter;
do {
- sprintf(&path[pos], "%03d", counter);
+ snprintf(&path[pos], MAX_RENAMES_DIGITS+1, "%03d", counter);
if (++counter >= MAX_RENAMES)
counter = 1;
} while ((rc = access(path, 0)) == 0 && counter != start);
if (verbose > 0) {
- rprintf(FINFO,"renaming %s to %s because of text busy\n",
- safe_fname(fname), safe_fname(path));
+ rprintf(FWARNING, "renaming %s to %s because of text busy\n",
+ fname, path);
}
/* maybe we should return rename()'s exit status? Nah. */
}
/* Returns 0 on successful rename, 1 if we successfully copied the file
- * across filesystems, -2 if copy_file() failed, and -1 on other errors. */
-int robust_rename(char *from, char *to, int mode)
+ * across filesystems, -2 if copy_file() failed, and -1 on other errors.
+ * If partialptr is not NULL and we need to do a copy, copy the file into
+ * the active partial-dir instead of over the destination file. */
+int robust_rename(const char *from, const char *to, const char *partialptr,
+ int mode)
{
int tries = 4;
switch (errno) {
#ifdef ETXTBSY
case ETXTBSY:
- if (robust_unlink(to) != 0)
+ if (robust_unlink(to) != 0) {
+ errno = ETXTBSY;
return -1;
+ }
+ errno = ETXTBSY;
break;
#endif
case EXDEV:
- if (copy_file(from, to, mode) != 0)
+ if (partialptr) {
+ if (!handle_partial_dir(partialptr,PDIR_CREATE))
+ return -1;
+ to = partialptr;
+ }
+ if (copy_file(from, to, -1, mode, 0) != 0)
return -2;
do_unlink(from);
return 1;
return -1;
}
-
static pid_t all_pids[10];
static int num_pids;
}
}
-
/** Turn a user name into a uid */
-int name_to_uid(char *name, uid_t *uid)
+int name_to_uid(const char *name, uid_t *uid_p)
{
struct passwd *pass;
if (!name || !*name)
return 0;
- pass = getpwnam(name);
- if (pass) {
- *uid = pass->pw_uid;
- return 1;
- }
- return 0;
+ if (!(pass = getpwnam(name)))
+ return 0;
+ *uid_p = pass->pw_uid;
+ return 1;
}
/** Turn a group name into a gid */
-int name_to_gid(char *name, gid_t *gid)
+int name_to_gid(const char *name, gid_t *gid_p)
{
struct group *grp;
if (!name || !*name)
return 0;
- grp = getgrnam(name);
- if (grp) {
- *gid = grp->gr_gid;
- return 1;
- }
- return 0;
+ if (!(grp = getgrnam(name)))
+ return 0;
+ *gid_p = grp->gr_gid;
+ return 1;
}
-
/** Lock a byte range in a open file */
int lock_range(int fd, int offset, int len)
{
return fcntl(fd,F_SETLK,&lock) == 0;
}
-static int filter_server_path(char *arg)
-{
- char *s;
+#define ENSURE_MEMSPACE(buf, type, sz, req) \
+ if ((req) > sz && !(buf = realloc_array(buf, type, sz = MAX(sz * 2, req)))) \
+ out_of_memory("glob_expand")
- if (server_filter_list.head) {
- for (s = arg; (s = strchr(s, '/')) != NULL; ) {
- *s = '\0';
- if (check_filter(&server_filter_list, arg, 1) < 0) {
- /* We must leave arg truncated! */
- return 1;
- }
- *s++ = '/';
+static inline void call_glob_match(const char *name, int len, int from_glob,
+ char *arg, int abpos, int fbpos);
+
+static struct glob_data {
+ char *arg_buf, *filt_buf, **argv;
+ int absize, fbsize, maxargs, argc;
+} glob;
+
+static void glob_match(char *arg, int abpos, int fbpos)
+{
+ int len;
+ char *slash;
+
+ while (*arg == '.' && arg[1] == '/') {
+ if (fbpos < 0) {
+ ENSURE_MEMSPACE(glob.filt_buf, char, glob.fbsize, glob.absize);
+ memcpy(glob.filt_buf, glob.arg_buf, abpos + 1);
+ fbpos = abpos;
}
+ ENSURE_MEMSPACE(glob.arg_buf, char, glob.absize, abpos + 3);
+ glob.arg_buf[abpos++] = *arg++;
+ glob.arg_buf[abpos++] = *arg++;
+ glob.arg_buf[abpos] = '\0';
}
- return 0;
+ if ((slash = strchr(arg, '/')) != NULL) {
+ *slash = '\0';
+ len = slash - arg;
+ } else
+ len = strlen(arg);
+ if (strpbrk(arg, "*?[")) {
+ struct dirent *di;
+ DIR *d;
+
+ if (!(d = opendir(abpos ? glob.arg_buf : ".")))
+ return;
+ while ((di = readdir(d)) != NULL) {
+ char *dname = d_name(di);
+ if (dname[0] == '.' && (dname[1] == '\0'
+ || (dname[1] == '.' && dname[2] == '\0')))
+ continue;
+ if (!wildmatch(arg, dname))
+ continue;
+ call_glob_match(dname, strlen(dname), 1,
+ slash ? arg + len + 1 : NULL,
+ abpos, fbpos);
+ }
+ closedir(d);
+ } else {
+ call_glob_match(arg, len, 0,
+ slash ? arg + len + 1 : NULL,
+ abpos, fbpos);
+ }
+ if (slash)
+ *slash = '/';
}
-static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
- int *maxargs_ptr)
+static inline void call_glob_match(const char *name, int len, int from_glob,
+ char *arg, int abpos, int fbpos)
{
- char **argv = *argv_ptr;
- int argc = *argc_ptr;
- int maxargs = *maxargs_ptr;
-#if !defined HAVE_GLOB || !defined HAVE_GLOB_H
- if (argc == maxargs) {
- maxargs += MAX_ARGS;
- if (!(argv = realloc_array(argv, char *, maxargs)))
- out_of_memory("glob_expand_one");
- *argv_ptr = argv;
- *maxargs_ptr = maxargs;
+ char *use_buf;
+
+ ENSURE_MEMSPACE(glob.arg_buf, char, glob.absize, abpos + len + 2);
+ memcpy(glob.arg_buf + abpos, name, len);
+ abpos += len;
+ glob.arg_buf[abpos] = '\0';
+
+ if (fbpos >= 0) {
+ ENSURE_MEMSPACE(glob.filt_buf, char, glob.fbsize, fbpos + len + 2);
+ memcpy(glob.filt_buf + fbpos, name, len);
+ fbpos += len;
+ glob.filt_buf[fbpos] = '\0';
+ use_buf = glob.filt_buf;
+ } else
+ use_buf = glob.arg_buf;
+
+ if (from_glob || (arg && len)) {
+ STRUCT_STAT st;
+ int is_dir;
+
+ if (do_stat(glob.arg_buf, &st) != 0)
+ return;
+ is_dir = S_ISDIR(st.st_mode) != 0;
+ if (arg && !is_dir)
+ return;
+
+ if (daemon_filter_list.head
+ && check_filter(&daemon_filter_list, FLOG, use_buf, is_dir) < 0)
+ return;
}
- if (!*s)
- s = ".";
- s = argv[argc++] = strdup(s);
- filter_server_path(s);
-#else
- glob_t globbuf;
- int i;
- if (maxargs <= argc)
- return;
- if (!*s)
- s = ".";
+ if (arg) {
+ glob.arg_buf[abpos++] = '/';
+ glob.arg_buf[abpos] = '\0';
+ if (fbpos >= 0) {
+ glob.filt_buf[fbpos++] = '/';
+ glob.filt_buf[fbpos] = '\0';
+ }
+ glob_match(arg, abpos, fbpos);
+ } else {
+ ENSURE_MEMSPACE(glob.argv, char *, glob.maxargs, glob.argc + 1);
+ if (!(glob.argv[glob.argc++] = strdup(glob.arg_buf)))
+ out_of_memory("glob_match");
+ }
+}
- if (sanitize_paths)
- s = sanitize_path(NULL, s, "", 0);
- else
- s = strdup(s);
-
- memset(&globbuf, 0, sizeof globbuf);
- if (!filter_server_path(s))
- glob(s, 0, NULL, &globbuf);
- if (MAX((int)globbuf.gl_pathc, 1) > maxargs - argc) {
- maxargs += globbuf.gl_pathc + MAX_ARGS;
- if (!(argv = realloc_array(argv, char *, maxargs)))
- out_of_memory("glob_expand_one");
- *argv_ptr = argv;
- *maxargs_ptr = maxargs;
+/* This routine performs wild-card expansion of the pathname in "arg". Any
+ * daemon-excluded files/dirs will not be matched by the wildcards. Returns 0
+ * if a wild-card string is the only returned item (due to matching nothing). */
+int glob_expand(const char *arg, char ***argv_p, int *argc_p, int *maxargs_p)
+{
+ int ret, save_argc;
+ char *s;
+
+ if (!arg) {
+ if (glob.filt_buf)
+ free(glob.filt_buf);
+ free(glob.arg_buf);
+ memset(&glob, 0, sizeof glob);
+ return -1;
}
- if (globbuf.gl_pathc == 0)
- argv[argc++] = s;
+
+ if (sanitize_paths)
+ s = sanitize_path(NULL, arg, "", 0, SP_KEEP_DOT_DIRS);
else {
- int j = globbuf.gl_pathc;
+ s = strdup(arg);
+ if (!s)
+ out_of_memory("glob_expand");
+ clean_fname(s, CFN_KEEP_DOT_DIRS
+ | CFN_KEEP_TRAILING_SLASH
+ | CFN_COLLAPSE_DOT_DOT_DIRS);
+ }
+
+ ENSURE_MEMSPACE(glob.arg_buf, char, glob.absize, MAXPATHLEN);
+ *glob.arg_buf = '\0';
+
+ glob.argc = save_argc = *argc_p;
+ glob.argv = *argv_p;
+ glob.maxargs = *maxargs_p;
+
+ ENSURE_MEMSPACE(glob.argv, char *, glob.maxargs, 100);
+
+ glob_match(s, 0, -1);
+
+ /* The arg didn't match anything, so add the failed arg to the list. */
+ if (glob.argc == save_argc) {
+ ENSURE_MEMSPACE(glob.argv, char *, glob.maxargs, glob.argc + 1);
+ glob.argv[glob.argc++] = s;
+ ret = 0;
+ } else {
free(s);
- for (i = 0; i < j; i++) {
- if (!(argv[argc++] = strdup(globbuf.gl_pathv[i])))
- out_of_memory("glob_expand_one");
- }
+ ret = 1;
}
- globfree(&globbuf);
-#endif
- *argc_ptr = argc;
+
+ *maxargs_p = glob.maxargs;
+ *argv_p = glob.argv;
+ *argc_p = glob.argc;
+
+ return ret;
}
/* This routine is only used in daemon mode. */
-void glob_expand(char *base1, char ***argv_ptr, int *argc_ptr, int *maxargs_ptr)
+void glob_expand_module(char *base1, char *arg, char ***argv_p, int *argc_p, int *maxargs_p)
{
- char *s = (*argv_ptr)[*argc_ptr];
- char *p, *q;
+ char *p, *s;
char *base = base1;
int base_len = strlen(base);
- if (!s || !*s)
+ if (!arg || !*arg)
return;
- if (strncmp(s, base, base_len) == 0)
- s += base_len;
+ if (strncmp(arg, base, base_len) == 0)
+ arg += base_len;
- if (!(s = strdup(s)))
- out_of_memory("glob_expand");
+ if (!(arg = strdup(arg)))
+ out_of_memory("glob_expand_module");
if (asprintf(&base," %s/", base1) <= 0)
- out_of_memory("glob_expand");
+ out_of_memory("glob_expand_module");
base_len++;
- for (q = s; *q; q = p + base_len) {
- if ((p = strstr(q, base)) != NULL)
+ for (s = arg; *s; s = p + base_len) {
+ if ((p = strstr(s, base)) != NULL)
*p = '\0'; /* split it at this point */
- glob_expand_one(q, argv_ptr, argc_ptr, maxargs_ptr);
+ glob_expand(s, argv_p, argc_p, maxargs_p);
if (!p)
break;
}
- free(s);
+ free(arg);
free(base);
}
void strlower(char *s)
{
while (*s) {
- if (isupper(*(unsigned char *)s))
- *s = tolower(*(unsigned char *)s);
+ if (isUpper(s))
+ *s = toLower(s);
s++;
}
}
int cnt = 0, new_component = 1;
while (*p) {
if (*p++ == '/')
- new_component = 1;
+ new_component = (*p != '.' || (p[1] != '/' && p[1] != '\0'));
else if (new_component) {
new_component = 0;
cnt++;
return cnt;
}
-/* Turns multiple adjacent slashes into a single slash, gets rid of "./"
- * elements (but not a trailing dot dir), removes a trailing slash, and
- * optionally collapses ".." elements (except for those at the start of the
- * string). If the resulting name would be empty, change it into a ".". */
-unsigned int clean_fname(char *name, BOOL collapse_dot_dot)
+/* Turns multiple adjacent slashes into a single slash, drops all leading or
+ * interior "." elements unless CFN_KEEP_DOT_DIRS is flagged. Will also drop
+ * a trailing '.' after a '/' if CFN_DROP_TRAILING_DOT_DIR is flagged, removes
+ * a trailing slash (perhaps after removing the aforementioned dot) unless
+ * CFN_KEEP_TRAILING_SLASH is flagged, and will also collapse ".." elements
+ * (except at the start) if CFN_COLLAPSE_DOT_DOT_DIRS is flagged. If the
+ * resulting name would be empty, returns ".". */
+unsigned int clean_fname(char *name, int flags)
{
char *limit = name - 1, *t = name, *f = name;
int anchored;
if ((anchored = *f == '/') != 0)
*t++ = *f++;
+ else if (flags & CFN_KEEP_DOT_DIRS && *f == '.' && f[1] == '/') {
+ *t++ = *f++;
+ *t++ = *f++;
+ }
while (*f) {
/* discard extra slashes */
if (*f == '/') {
continue;
}
if (*f == '.') {
- /* discard "." dirs (but NOT a trailing '.'!) */
- if (f[1] == '/') {
+ /* discard interior "." dirs */
+ if (f[1] == '/' && !(flags & CFN_KEEP_DOT_DIRS)) {
f += 2;
continue;
}
+ if (f[1] == '\0' && flags & CFN_DROP_TRAILING_DOT_DIR)
+ break;
/* collapse ".." dirs */
- if (collapse_dot_dot
- && f[1] == '.' && (f[2] == '/' || !f[2])) {
+ if (flags & CFN_COLLAPSE_DOT_DOT_DIRS
+ && f[1] == '.' && (f[2] == '/' || !f[2])) {
char *s = t - 1;
if (s == name && anchored) {
f += 2;
while (*f && (*t++ = *f++) != '/') {}
}
- if (t > name+anchored && t[-1] == '/')
+ if (t > name+anchored && t[-1] == '/' && !(flags & CFN_KEEP_TRAILING_SLASH))
t--;
if (t == name)
*t++ = '.';
* rootdir will be ignored to avoid expansion of the string.
*
* The rootdir string contains a value to use in place of a leading slash.
- * Specify NULL to get the default of lp_path(module_id).
+ * Specify NULL to get the default of "module_dir".
*
- * If depth is >= 0, it is a count of how many '..'s to allow at the start
- * of the path. Use -1 to allow unlimited depth.
+ * The depth var is a count of how many '..'s to allow at the start of the
+ * path.
*
* We also clean the path in a manner similar to clean_fname() but with a
- * few differences:
+ * few differences:
*
* Turns multiple adjacent slashes into a single slash, gets rid of "." dir
* elements (INCLUDING a trailing dot dir), PRESERVES a trailing slash, and
* ALWAYS collapses ".." elements (except for those at the start of the
* string up to "depth" deep). If the resulting name would be empty,
* change it into a ".". */
-char *sanitize_path(char *dest, const char *p, const char *rootdir, int depth)
+char *sanitize_path(char *dest, const char *p, const char *rootdir, int depth,
+ int flags)
{
char *start, *sanp;
- int rlen = 0;
+ int rlen = 0, drop_dot_dirs = !relative_paths || !(flags & SP_KEEP_DOT_DIRS);
if (dest != p) {
int plen = strlen(p);
if (*p == '/') {
if (!rootdir)
- rootdir = lp_path(module_id);
+ rootdir = module_dir;
rlen = strlen(rootdir);
depth = 0;
p++;
}
}
+ if (drop_dot_dirs) {
+ while (*p == '.' && p[1] == '/')
+ p += 2;
+ }
+
start = sanp = dest + rlen;
- while (*p != '\0') {
+ /* This loop iterates once per filename component in p, pointing at
+ * the start of the name (past any prior slash) for each iteration. */
+ while (*p) {
/* discard leading or extra slashes */
if (*p == '/') {
p++;
continue;
}
- /* this loop iterates once per filename component in p.
- * both p (and sanp if the original had a slash) should
- * always be left pointing after a slash
- */
- if (*p == '.' && (p[1] == '/' || p[1] == '\0')) {
- /* skip "." component */
- p++;
- continue;
+ if (drop_dot_dirs) {
+ if (*p == '.' && (p[1] == '/' || p[1] == '\0')) {
+ /* skip "." component */
+ p++;
+ continue;
+ }
}
if (*p == '.' && p[1] == '.' && (p[2] == '/' || p[2] == '\0')) {
/* ".." component followed by slash or end */
if (sanp != start) {
/* back up sanp one level */
--sanp; /* now pointing at slash */
- while (sanp > start && sanp[-1] != '/') {
- /* skip back up to slash */
+ while (sanp > start && sanp[-1] != '/')
sanp--;
- }
}
continue;
}
return dest;
}
-char curr_dir[MAXPATHLEN];
-unsigned int curr_dir_len;
-
-/**
- * Like chdir(), but it keeps track of the current directory (in the
+/* Like chdir(), but it keeps track of the current directory (in the
* global "curr_dir"), and ensures that the path size doesn't overflow.
- * Also cleans the path using the clean_fname() function.
- **/
-int push_dir(char *dir)
+ * Also cleans the path using the clean_fname() function. */
+int change_dir(const char *dir, int set_path_only)
{
static int initialised;
unsigned int len;
if (len == 1 && *dir == '.')
return 1;
- if ((*dir == '/' ? len : curr_dir_len + 1 + len) >= sizeof curr_dir)
- return 0;
-
- if (chdir(dir))
- return 0;
-
if (*dir == '/') {
+ if (len >= sizeof curr_dir) {
+ errno = ENAMETOOLONG;
+ return 0;
+ }
+ if (!set_path_only && chdir(dir))
+ return 0;
memcpy(curr_dir, dir, len + 1);
- curr_dir_len = len;
} else {
- curr_dir[curr_dir_len++] = '/';
- memcpy(curr_dir + curr_dir_len, dir, len + 1);
- curr_dir_len += len;
- }
-
- curr_dir_len = clean_fname(curr_dir, 1);
+ if (curr_dir_len + 1 + len >= sizeof curr_dir) {
+ errno = ENAMETOOLONG;
+ return 0;
+ }
+ curr_dir[curr_dir_len] = '/';
+ memcpy(curr_dir + curr_dir_len + 1, dir, len + 1);
- return 1;
-}
+ if (!set_path_only && chdir(curr_dir)) {
+ curr_dir[curr_dir_len] = '\0';
+ return 0;
+ }
+ }
-/**
- * Reverse a push_dir() call. You must pass in an absolute path
- * that was copied from a prior value of "curr_dir".
- **/
-int pop_dir(char *dir)
-{
- if (chdir(dir))
- return 0;
+ curr_dir_len = clean_fname(curr_dir, CFN_COLLAPSE_DOT_DOT_DIRS);
+ if (sanitize_paths) {
+ if (module_dirlen > curr_dir_len)
+ module_dirlen = curr_dir_len;
+ curr_dir_depth = count_dir_elements(curr_dir + module_dirlen);
+ }
- curr_dir_len = strlcpy(curr_dir, dir, sizeof curr_dir);
- if (curr_dir_len >= sizeof curr_dir)
- curr_dir_len = sizeof curr_dir - 1;
+ if (verbose >= 5 && !set_path_only)
+ rprintf(FINFO, "[%s] change_dir(%s)\n", who_am_i(), curr_dir);
return 1;
}
-/* Return the filename, turning any non-printable characters into escaped
- * characters (e.g. \n -> \012, \ -> \\). This ensures that outputting it
- * cannot generate an empty line nor corrupt the screen. This function can
- * return only MAX_SAFE_NAMES values at a time! The returned value can be
- * longer than MAXPATHLEN (because we may be trying to output an error about
- * a too-long filename)! */
-char *safe_fname(const char *fname)
-{
-#define MAX_SAFE_NAMES 4
- static char fbuf[MAX_SAFE_NAMES][MAXPATHLEN*2];
- static int ndx = 0;
- int limit = sizeof fbuf / MAX_SAFE_NAMES - 1;
- char *t;
-
- ndx = (ndx + 1) % MAX_SAFE_NAMES;
- for (t = fbuf[ndx]; *fname && limit; fname++) {
- if (*fname == '\\') {
- if ((limit -= 2) < 0)
- break;
- *t++ = '\\';
- *t++ = '\\';
- } else if (!isprint(*(uchar*)fname)) {
- if ((limit -= 4) < 0)
- break;
- sprintf(t, "\\%03o", *(uchar*)fname);
- t += 4;
- } else {
- limit--;
- *t++ = *fname;
- }
- }
- *t = '\0';
-
- return fbuf[ndx];
-}
-
/**
* Return a quoted string with the full pathname of the indicated filename.
* The string " (in MODNAME)" may also be appended. The returned pointer
if (result)
free(result);
- fn = safe_fname(fn);
if (*fn == '/')
p1 = p2 = "";
else {
- p1 = curr_dir;
+ p1 = curr_dir + module_dirlen;
for (p2 = p1; *p2 == '/'; p2++) {}
if (*p2)
p2 = "/";
m1 = " (in ";
m2 = lp_name(module_id);
m3 = ")";
- if (p1 == curr_dir) {
- if (!lp_use_chroot(module_id)) {
- char *p = lp_path(module_id);
- if (*p != '/' || p[1])
- p1 += strlen(p);
- }
- }
} else
m1 = m2 = m3 = "";
- asprintf(&result, "\"%s%s%s\"%s%s%s", p1, p2, fn, m1, m2, m3);
+ if (asprintf(&result, "\"%s%s%s\"%s%s%s", p1, p2, fn, m1, m2, m3) <= 0)
+ out_of_memory("full_fname");
return result;
}
fn = fname;
if ((int)pathjoin(t, sz, partial_dir, fn) >= sz)
return NULL;
- if (server_filter_list.head) {
- static int len;
- if (!len)
- len = strlen(partial_dir);
- t[len] = '\0';
- if (check_filter(&server_filter_list, partial_fname, 1) < 0)
+ if (daemon_filter_list.head) {
+ t = strrchr(partial_fname, '/');
+ *t = '\0';
+ if (check_filter(&daemon_filter_list, FLOG, partial_fname, 1) < 0)
return NULL;
- t[len] = '/';
- if (check_filter(&server_filter_list, partial_fname, 0) < 0)
+ *t = '/';
+ if (check_filter(&daemon_filter_list, FLOG, partial_fname, 0) < 0)
return NULL;
}
return 1;
}
-/** We need to supply our own strcmp function for file list comparisons
- to ensure that signed/unsigned usage is consistent between machines. */
-int u_strcmp(const char *cs1, const char *cs2)
-{
- const uchar *s1 = (const uchar *)cs1;
- const uchar *s2 = (const uchar *)cs2;
-
- while (*s1 && *s2 && (*s1 == *s2)) {
- s1++; s2++;
- }
-
- return (int)*s1 - (int)*s2;
-}
-
-
-
/**
* Determine if a symlink points outside the current directory tree.
* This is considered "unsafe" because e.g. when mirroring somebody
return (depth < 0);
}
+/* Return the int64 number as a string. If the --human-readable option was
+ * specified, we may output the number in K, M, or G units. We can return
+ * up to 4 buffers at a time. */
+char *human_num(int64 num)
+{
+ static char bufs[4][128]; /* more than enough room */
+ static unsigned int n;
+ char *s;
-/**
- * Return the date and time as a string
- **/
+ n = (n + 1) % (sizeof bufs / sizeof bufs[0]);
+
+ if (human_readable) {
+ char units = '\0';
+ int mult = human_readable == 1 ? 1000 : 1024;
+ double dnum = 0;
+ if (num > mult*mult*mult) {
+ dnum = (double)num / (mult*mult*mult);
+ units = 'G';
+ } else if (num > mult*mult) {
+ dnum = (double)num / (mult*mult);
+ units = 'M';
+ } else if (num > mult) {
+ dnum = (double)num / mult;
+ units = 'K';
+ }
+ if (units) {
+ snprintf(bufs[n], sizeof bufs[0], "%.2f%c", dnum, units);
+ return bufs[n];
+ }
+ }
+
+ s = bufs[n] + sizeof bufs[0] - 1;
+ *s = '\0';
+
+ if (!num)
+ *--s = '0';
+ while (num) {
+ *--s = (char)(num % 10) + '0';
+ num /= 10;
+ }
+ return s;
+}
+
+/* Return the double number as a string. If the --human-readable option was
+ * specified, we may output the number in K, M, or G units. We use a buffer
+ * from human_num() to return our result. */
+char *human_dnum(double dnum, int decimal_digits)
+{
+ char *buf = human_num(dnum);
+ int len = strlen(buf);
+ if (isDigit(buf + len - 1)) {
+ /* There's extra room in buf prior to the start of the num. */
+ buf -= decimal_digits + 1;
+ snprintf(buf, len + decimal_digits + 2, "%.*f", decimal_digits, dnum);
+ }
+ return buf;
+}
+
+/* Return the date and time as a string. Some callers tweak returned buf. */
char *timestring(time_t t)
{
static char TimeBuf[200];
struct tm *tm = localtime(&t);
+ char *p;
#ifdef HAVE_STRFTIME
strftime(TimeBuf, sizeof TimeBuf - 1, "%Y/%m/%d %H:%M:%S", tm);
strlcpy(TimeBuf, asctime(tm), sizeof TimeBuf);
#endif
- if (TimeBuf[strlen(TimeBuf)-1] == '\n') {
- TimeBuf[strlen(TimeBuf)-1] = 0;
- }
+ if ((p = strchr(TimeBuf, '\n')) != NULL)
+ *p = '\0';
- return(TimeBuf);
+ return TimeBuf;
}
-
/**
* Sleep for a specified number of milliseconds.
*
return True;
}
-
-/**
- * Determine if two file modification times are equivalent (either
- * exact or in the modification timestamp window established by
- * --modify-window).
+/* Determine if two time_t values are equivalent (either exact, or in
+ * the modification timestamp window established by --modify-window).
*
* @retval 0 if the times should be treated as the same
*
*
* @retval -1 if the 2nd is later
**/
-int cmp_modtime(time_t file1, time_t file2)
+int cmp_time(time_t file1, time_t file2)
{
if (file2 > file1) {
if (file2 - file1 <= modify_window)
}
#endif
-
#define MALLOC_MAX 0x40000000
-void *_new_array(unsigned int size, unsigned long num)
+void *_new_array(unsigned long num, unsigned int size, int use_calloc)
{
if (num >= MALLOC_MAX/size)
return NULL;
- return malloc(size * num);
+ return use_calloc ? calloc(num, size) : malloc(num * size);
}
-void *_realloc_array(void *ptr, unsigned int size, unsigned long num)
+void *_realloc_array(void *ptr, unsigned int size, size_t num)
{
if (num >= MALLOC_MAX/size)
return NULL;
- /* No realloc should need this, but just in case... */
if (!ptr)
return malloc(size * num);
return realloc(ptr, size * num);
if (strcmp(s+1, "orig") == 0)
continue;
} else if (s_len > 2 && had_tilde
- && s[1] == '~' && isdigit(*(uchar*)(s+2)))
+ && s[1] == '~' && isDigit(s + 2))
continue;
*len_ptr = s_len;
suf = s;
break;
/* Determine if the suffix is all digits. */
for (s++, s_len--; s_len > 0; s++, s_len--) {
- if (!isdigit(*(uchar*)s))
+ if (!isDigit(s))
return suf;
}
/* An all-digit suffix may not be that signficant. */
return a[len2-1];
}
+
+#define BB_SLOT_SIZE (16*1024) /* Desired size in bytes */
+#define BB_PER_SLOT_BITS (BB_SLOT_SIZE * 8) /* Number of bits per slot */
+#define BB_PER_SLOT_INTS (BB_SLOT_SIZE / 4) /* Number of int32s per slot */
+
+struct bitbag {
+ uint32 **bits;
+ int slot_cnt;
+};
+
+struct bitbag *bitbag_create(int max_ndx)
+{
+ struct bitbag *bb = new(struct bitbag);
+ bb->slot_cnt = (max_ndx + BB_PER_SLOT_BITS - 1) / BB_PER_SLOT_BITS;
+
+ if (!(bb->bits = (uint32**)calloc(bb->slot_cnt, sizeof (uint32*))))
+ out_of_memory("bitbag_create");
+
+ return bb;
+}
+
+void bitbag_set_bit(struct bitbag *bb, int ndx)
+{
+ int slot = ndx / BB_PER_SLOT_BITS;
+ ndx %= BB_PER_SLOT_BITS;
+
+ if (!bb->bits[slot]) {
+ if (!(bb->bits[slot] = (uint32*)calloc(BB_PER_SLOT_INTS, 4)))
+ out_of_memory("bitbag_set_bit");
+ }
+
+ bb->bits[slot][ndx/32] |= 1u << (ndx % 32);
+}
+
+#if 0 /* not needed yet */
+void bitbag_clear_bit(struct bitbag *bb, int ndx)
+{
+ int slot = ndx / BB_PER_SLOT_BITS;
+ ndx %= BB_PER_SLOT_BITS;
+
+ if (!bb->bits[slot])
+ return;
+
+ bb->bits[slot][ndx/32] &= ~(1u << (ndx % 32));
+}
+
+int bitbag_check_bit(struct bitbag *bb, int ndx)
+{
+ int slot = ndx / BB_PER_SLOT_BITS;
+ ndx %= BB_PER_SLOT_BITS;
+
+ if (!bb->bits[slot])
+ return 0;
+
+ return bb->bits[slot][ndx/32] & (1u << (ndx % 32)) ? 1 : 0;
+}
+#endif
+
+/* Call this with -1 to start checking from 0. Returns -1 at the end. */
+int bitbag_next_bit(struct bitbag *bb, int after)
+{
+ uint32 bits, mask;
+ int i, ndx = after + 1;
+ int slot = ndx / BB_PER_SLOT_BITS;
+ ndx %= BB_PER_SLOT_BITS;
+
+ mask = (1u << (ndx % 32)) - 1;
+ for (i = ndx / 32; slot < bb->slot_cnt; slot++, i = mask = 0) {
+ if (!bb->bits[slot])
+ continue;
+ for ( ; i < BB_PER_SLOT_INTS; i++, mask = 0) {
+ if (!(bits = bb->bits[slot][i] & ~mask))
+ continue;
+ /* The xor magic figures out the lowest enabled bit in
+ * bits, and the switch quickly computes log2(bit). */
+ switch (bits ^ (bits & (bits-1))) {
+#define LOG2(n) case 1u << n: return slot*BB_PER_SLOT_BITS + i*32 + n
+ LOG2(0); LOG2(1); LOG2(2); LOG2(3);
+ LOG2(4); LOG2(5); LOG2(6); LOG2(7);
+ LOG2(8); LOG2(9); LOG2(10); LOG2(11);
+ LOG2(12); LOG2(13); LOG2(14); LOG2(15);
+ LOG2(16); LOG2(17); LOG2(18); LOG2(19);
+ LOG2(20); LOG2(21); LOG2(22); LOG2(23);
+ LOG2(24); LOG2(25); LOG2(26); LOG2(27);
+ LOG2(28); LOG2(29); LOG2(30); LOG2(31);
+ }
+ return -1; /* impossible... */
+ }
+ }
+
+ return -1;
+}
+
+void *expand_item_list(item_list *lp, size_t item_size,
+ const char *desc, int incr)
+{
+ /* First time through, 0 <= 0, so list is expanded. */
+ if (lp->malloced <= lp->count) {
+ void *new_ptr;
+ size_t new_size = lp->malloced;
+ if (incr < 0)
+ new_size += -incr; /* increase slowly */
+ else if (new_size < (size_t)incr)
+ new_size += incr;
+ else
+ new_size *= 2;
+ if (new_size < lp->malloced)
+ overflow_exit("expand_item_list");
+ /* Using _realloc_array() lets us pass the size, not a type. */
+ new_ptr = _realloc_array(lp->items, item_size, new_size);
+ if (verbose >= 4) {
+ rprintf(FINFO, "[%s] expand %s to %.0f bytes, did%s move\n",
+ who_am_i(), desc, (double)new_size * item_size,
+ new_ptr == lp->items ? " not" : "");
+ }
+ if (!new_ptr)
+ out_of_memory("expand_item_list");
+
+ lp->items = new_ptr;
+ lp->malloced = new_size;
+ }
+ return (char*)lp->items + (lp->count++ * item_size);
+}
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff