* Copyright (C) 1996-2000 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2003, 2004, 2005, 2006 Wayne Davison
+ * 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,
* 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.
+ * with this program; if not, visit the http://fsf.org website.
*/
#include "rsync.h"
+#include "ifuncs.h"
extern int verbose;
extern int dry_run;
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;
return ret;
}
-void print_child_argv(char **cmd)
+void print_child_argv(const char *prefix, char **cmd)
{
- rprintf(FCLIENT, "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
rprintf(FCLIENT, "\n");
}
-NORETURN void out_of_memory(char *str)
+NORETURN void out_of_memory(const char *str)
{
rprintf(FERROR, "ERROR: out of memory in %s [%s]\n", str, who_am_i());
exit_cleanup(RERR_MALLOC);
}
-NORETURN void overflow_exit(char *str)
+NORETURN void overflow_exit(const char *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, mode_t mode)
+int set_modtime(const char *fname, time_t modtime, mode_t mode)
{
#if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
if (S_ISLNK(mode))
t[1].tv_sec = modtime;
t[1].tv_usec = 0;
# ifdef HAVE_LUTIMES
- if (S_ISLNK(mode))
- return lutimes(fname, t);
+ if (S_ISLNK(mode)) {
+ if (lutimes(fname, t) < 0)
+ return errno == ENOSYS ? 1 : -1;
+ return 0;
+ }
# endif
return utimes(fname, t);
-#elif defined HAVE_UTIMBUF
+#elif defined HAVE_STRUCT_UTIMBUF
struct utimbuf tbuf;
tbuf.actime = time(NULL);
tbuf.modtime = modtime;
*
* 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 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(const char *source, const 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) {
+ rsyserr(FERROR_XFER, errno, "open %s", full_fname(source));
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) {
+ rsyserr(FERROR_XFER, errno, "unlink %s", full_fname(dest));
+ 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
+ && (!create_bak_dir || errno != ENOENT || make_bak_dir(dest) < 0
+ || (ofd = do_open(dest, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, mode)) < 0)) {
+ rsyserr(FERROR_XFER, errno, "open %s", full_fname(dest));
+ close(ifd);
+ 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));
+ rsyserr(FERROR_XFER, errno, "write %s", full_fname(dest));
close(ifd);
close(ofd);
return -1;
}
if (len < 0) {
- rsyserr(FERROR, errno, "read %s", full_fname(source));
+ rsyserr(FERROR_XFER, errno, "read %s", full_fname(source));
close(ifd);
close(ofd);
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",
+ rsyserr(FERROR_XFER, errno, "close failed on %s",
full_fname(dest));
return -1;
}
} while ((rc = access(path, 0)) == 0 && counter != start);
if (verbose > 0) {
- rprintf(FINFO,"renaming %s to %s because of text busy\n",
+ rprintf(FWARNING, "renaming %s to %s because of text busy\n",
fname, path);
}
* 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(char *from, char *to, char *partialptr,
+int robust_rename(const char *from, const char *to, const char *partialptr,
int mode)
{
int tries = 4;
return -1;
to = partialptr;
}
- if (copy_file(from, to, mode) != 0)
+ if (copy_file(from, to, -1, mode, 0) != 0)
return -2;
do_unlink(from);
return 1;
}
/** 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 */
return fcntl(fd,F_SETLK,&lock) == 0;
}
-static int filter_server_path(char *arg)
+static int filter_daemon_path(char *arg)
{
- char *s;
-
- if (server_filter_list.head) {
+ if (daemon_filter_list.head) {
+ char *s;
for (s = arg; (s = strchr(s, '/')) != NULL; ) {
*s = '\0';
- if (check_filter(&server_filter_list, arg, 1) < 0) {
+ if (check_filter(&daemon_filter_list, arg, 1) < 0) {
/* We must leave arg truncated! */
return 1;
}
return 0;
}
-static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
- int *maxargs_ptr)
+void glob_expand(char *s, char ***argv_ptr, int *argc_ptr, int *maxargs_ptr)
{
char **argv = *argv_ptr;
int argc = *argc_ptr;
int maxargs = *maxargs_ptr;
+ int count, have_glob_results;
+
#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");
+ out_of_memory("glob_expand");
*argv_ptr = argv;
*maxargs_ptr = maxargs;
}
if (!*s)
s = ".";
s = argv[argc++] = strdup(s);
- filter_server_path(s);
+ filter_daemon_path(s);
#else
glob_t globbuf;
s = ".";
if (sanitize_paths)
- s = sanitize_path(NULL, s, "", 0, NULL);
- else
+ s = sanitize_path(NULL, s, "", 0, SP_KEEP_DOT_DIRS);
+ else {
s = strdup(s);
+ if (!s)
+ out_of_memory("glob_expand");
+ clean_fname(s, CFN_KEEP_DOT_DIRS
+ | CFN_KEEP_TRAILING_SLASH
+ | CFN_COLLAPSE_DOT_DOT_DIRS);
+ }
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;
+ glob(s, 0, NULL, &globbuf);
+ /* Note: we check the first match against the filter list,
+ * just in case the user specified a wildcard in the path. */
+ if ((count = globbuf.gl_pathc) > 0) {
+ if (filter_daemon_path(globbuf.gl_pathv[0])) {
+ int slashes = 0;
+ char *cp;
+ /* Truncate original arg at glob's truncation point. */
+ for (cp = globbuf.gl_pathv[0]; *cp; cp++) {
+ if (*cp == '/')
+ slashes++;
+ }
+ for (cp = s; *cp; cp++) {
+ if (*cp == '/') {
+ if (slashes-- <= 0) {
+ *cp = '\0';
+ break;
+ }
+ }
+ }
+ have_glob_results = 0;
+ count = 1;
+ } else
+ have_glob_results = 1;
+ } else {
+ /* This truncates "s" at a filtered element, if present. */
+ filter_daemon_path(s);
+ have_glob_results = 0;
+ count = 1;
+ }
+ if (count + argc > maxargs) {
+ maxargs += count + MAX_ARGS;
if (!(argv = realloc_array(argv, char *, maxargs)))
- out_of_memory("glob_expand_one");
+ out_of_memory("glob_expand");
*argv_ptr = argv;
*maxargs_ptr = maxargs;
}
- if (globbuf.gl_pathc == 0)
- argv[argc++] = s;
- else {
+ if (have_glob_results) {
int i;
free(s);
- for (i = 0; i < (int)globbuf.gl_pathc; i++) {
+ for (i = 0; i < count; i++) {
if (!(argv[argc++] = strdup(globbuf.gl_pathv[i])))
- out_of_memory("glob_expand_one");
+ out_of_memory("glob_expand");
}
- }
+ } else
+ argv[argc++] = s;
globfree(&globbuf);
#endif
*argc_ptr = argc;
}
/* 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_ptr, int *argc_ptr, int *maxargs_ptr)
{
- 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_ptr, argc_ptr, maxargs_ptr);
if (!p)
break;
}
- free(s);
+ free(arg);
free(base);
}
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".
*
* The depth var is a count of how many '..'s to allow at the start of the
- * path. If symlink is set, combine its value with the "p" value to get
- * the target path, and **return NULL if any '..'s try to escape**.
+ * path.
*
* We also clean the path in a manner similar to clean_fname() but with a
* few differences:
* 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,
- const char *symlink)
+ int flags)
{
- char *start, *sanp, *save_dest = dest;
- int rlen = 0, leave_one_dotdir = relative_paths;
-
- if (symlink && *symlink == '/') {
- p = symlink;
- symlink = "";
- }
+ char *start, *sanp;
+ 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 (1) {
- if (*p == '\0') {
- if (!symlink || !*symlink)
- break;
- while (sanp != start && sanp[-1] != '/') {
- /* strip last element */
- sanp--;
- }
- /* Append a relative symlink */
- p = symlink;
- symlink = "";
- }
+ /* 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')) {
- if (leave_one_dotdir && p[1])
- leave_one_dotdir = 0;
- else {
+ 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 (depth <= 0 || sanp != start) {
- if (symlink && sanp == start) {
- if (!save_dest)
- free(dest);
- return NULL;
- }
p += 2;
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;
}
/* 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, int set_path_only)
+int push_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)
+ if ((*dir == '/' ? len : curr_dir_len + 1 + len) >= sizeof curr_dir) {
+ errno = ENAMETOOLONG;
return 0;
+ }
if (!set_path_only && chdir(dir))
return 0;
curr_dir_len += len;
}
- curr_dir_len = clean_fname(curr_dir, 1);
+ 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);
}
+ if (verbose >= 5 && !set_path_only)
+ rprintf(FINFO, "[%s] push_dir(%s)\n", who_am_i(), curr_dir);
+
return 1;
}
* 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)
+int pop_dir(const char *dir)
{
if (chdir(dir))
return 0;
if (sanitize_paths)
curr_dir_depth = count_dir_elements(curr_dir + module_dirlen);
+ if (verbose >= 5)
+ rprintf(FINFO, "[%s] pop_dir(%s)\n", who_am_i(), curr_dir);
+
return 1;
}
fn = fname;
if ((int)pathjoin(t, sz, partial_dir, fn) >= sz)
return NULL;
- if (server_filter_list.head) {
+ if (daemon_filter_list.head) {
t = strrchr(partial_fname, '/');
*t = '\0';
- if (check_filter(&server_filter_list, partial_fname, 1) < 0)
+ if (check_filter(&daemon_filter_list, partial_fname, 1) < 0)
return NULL;
*t = '/';
- if (check_filter(&server_filter_list, partial_fname, 0) < 0)
+ if (check_filter(&daemon_filter_list, partial_fname, 0) < 0)
return NULL;
}
if (!num)
*--s = '0';
while (num) {
- *--s = (num % 10) + '0';
+ *--s = (char)(num % 10) + '0';
num /= 10;
}
return s;
return buf;
}
-/**
- * Return the date and time as a string
- **/
+/* Return the date and time as a string. Some callers tweak returned buf. */
char *timestring(time_t t)
{
static char TimeBuf[200];
#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)
{
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);
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;
+ new_ptr = realloc_array(lp->items, char, new_size * item_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