X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/ba2133d6add082b059728074febdac6c520a4351..e516b69ef67822cbbde7252cdddb1217b4aa5567:/util.c

diff --git a/util.c b/util.c
index 64a5b385..75b6e3fc 100644
--- a/util.c
+++ b/util.c
@@ -7,8 +7,9 @@
  * Copyright (C) 2003-2007 Wayne Davison
  *
  * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * 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
@@ -16,11 +17,11 @@
  * 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;
@@ -28,6 +29,7 @@ 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;
@@ -89,9 +91,9 @@ int fd_pair(int fd[2])
 	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
@@ -150,7 +152,7 @@ int set_modtime(const char *fname, time_t modtime, mode_t mode)
 		}
 # endif
 		return utimes(fname, t);
-#elif defined HAVE_UTIMBUF
+#elif defined HAVE_STRUCT_UTIMBUF
 		struct utimbuf tbuf;
 		tbuf.actime = time(NULL);
 		tbuf.modtime = modtime;
@@ -259,33 +261,36 @@ static int safe_read(int desc, char *ptr, size_t len)
 	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) {
+	if ((ifd = do_open(source, O_RDONLY, 0)) < 0) {
 		rsyserr(FERROR, 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, 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, errno, "open %s", full_fname(dest));
+			close(ifd);
+			return -1;
+		}
 	}
 
 	while ((len = safe_read(ifd, buf, sizeof buf)) > 0) {
@@ -405,7 +410,7 @@ int robust_rename(const char *from, const char *to, const char *partialptr,
 					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;
@@ -518,8 +523,7 @@ static int filter_server_path(char *arg)
 	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;
@@ -528,7 +532,7 @@ static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
 	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;
 	}
@@ -548,6 +552,8 @@ static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
 		s = sanitize_path(NULL, s, "", 0, NULL);
 	else
 		s = strdup(s);
+	if (!s)
+		out_of_memory("glob_expand");
 
 	memset(&globbuf, 0, sizeof globbuf);
 	if (!filter_server_path(s))
@@ -555,7 +561,7 @@ static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
 	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");
+			out_of_memory("glob_expand");
 		*argv_ptr = argv;
 		*maxargs_ptr = maxargs;
 	}
@@ -566,7 +572,7 @@ static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
 		free(s);
 		for (i = 0; i < (int)globbuf.gl_pathc; i++) {
 			if (!(argv[argc++] = strdup(globbuf.gl_pathv[i])))
-				out_of_memory("glob_expand_one");
+				out_of_memory("glob_expand");
 		}
 	}
 	globfree(&globbuf);
@@ -575,35 +581,34 @@ static void glob_expand_one(char *s, char ***argv_ptr, int *argc_ptr,
 }
 
 /* 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);
 }
 
@@ -685,11 +690,14 @@ int count_dir_elements(const char *p)
 	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 interior "."
+ * elements, drops an intial "./" unless CFN_KEEP_LEADING_DOT_DIR is flagged,
+ * will even 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, will even collapse ".."
+ * elements (except at the start of the string) if CFN_COLLAPSE_DOT_DOT_DIRS
+ * is flagged.  If the resulting name would be empty, we return ".". */
+unsigned int clean_fname(char *name, int flags)
 {
 	char *limit = name - 1, *t = name, *f = name;
 	int anchored;
@@ -699,6 +707,10 @@ unsigned int clean_fname(char *name, BOOL collapse_dot_dot)
 
 	if ((anchored = *f == '/') != 0)
 		*t++ = *f++;
+	else if (flags & CFN_KEEP_LEADING_DOT_DIR && *f == '.' && f[1] == '/') {
+		*t++ = *f++;
+		*t++ = *f++;
+	}
 	while (*f) {
 		/* discard extra slashes */
 		if (*f == '/') {
@@ -706,14 +718,16 @@ unsigned int clean_fname(char *name, BOOL collapse_dot_dot)
 			continue;
 		}
 		if (*f == '.') {
-			/* discard "." dirs (but NOT a trailing '.'!) */
+			/* discard interior "." dirs */
 			if (f[1] == '/') {
 				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;
@@ -731,7 +745,7 @@ unsigned int clean_fname(char *name, BOOL collapse_dot_dot)
 		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++ = '.';
@@ -749,7 +763,7 @@ unsigned int clean_fname(char *name, BOOL collapse_dot_dot)
  * 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
@@ -778,7 +792,7 @@ char *sanitize_path(char *dest, const char *p, const char *rootdir, int depth,
 		int plen = strlen(p);
 		if (*p == '/') {
 			if (!rootdir)
-				rootdir = lp_path(module_id);
+				rootdir = module_dir;
 			rlen = strlen(rootdir);
 			depth = 0;
 			p++;
@@ -883,8 +897,10 @@ int push_dir(const char *dir, int set_path_only)
 	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;
@@ -898,7 +914,7 @@ int push_dir(const char *dir, int set_path_only)
 		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;
@@ -1252,11 +1268,11 @@ int _Insure_trap_error(int a1, int a2, int a3, int a4, int a5, int a6)
 
 #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)
@@ -1466,3 +1482,31 @@ int bitbag_next_bit(struct bitbag *bb, int after)
 
 	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);
+}