X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/aa9b77a56c302461e373cf447672aa93adff3130..4b957c22381cf1848ff6a5e59249bb71ba79e9fa:/util.c

diff --git a/util.c b/util.c
index b80d5161..bfa35f18 100644
--- a/util.c
+++ b/util.c
@@ -24,15 +24,33 @@
   */
 #include "rsync.h"
 
-int num_waiting(int fd)
+/****************************************************************************
+Set a fd into nonblocking mode. Uses POSIX O_NONBLOCK if available,
+else
+if SYSV use O_NDELAY
+if BSD use FNDELAY
+****************************************************************************/
+int set_nonblocking(int fd)
 {
-  int len=0;
-  ioctl(fd,FIONREAD,&len);
-  return(len);
+	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;
+	val |= FLAG_TO_SET;
+	return fcntl( fd, F_SETFL, val);
+#undef FLAG_TO_SET
 }
 
 
-
 /* this is taken from CVS */
 int piped_child(char **command,int *f_in,int *f_out)
 {
@@ -206,7 +224,7 @@ int create_directory_path(char *fname)
 
    derived from GNU C's cccp.c.
 */
-int full_write(int desc, char *ptr, int len)
+static int full_write(int desc, char *ptr, int len)
 {
 	int total_written;
 	
@@ -667,3 +685,75 @@ int u_strcmp(const char *cs1, const char *cs2)
 	
 	return (int)*s1 - (int)*s2;
 }
+
+static OFF_T last_ofs;
+
+void end_progress(void)
+{
+	extern int do_progress, am_server;
+
+	if (do_progress && !am_server) {
+		rprintf(FINFO,"\n");
+	}
+	last_ofs = 0;
+}
+
+void show_progress(OFF_T ofs, OFF_T size)
+{
+	extern int do_progress, am_server;
+
+	if (do_progress && !am_server) {
+		if (ofs > last_ofs + 1000) {
+			int pct = (int)((100.0*ofs)/size);
+			rprintf(FINFO,"%.0f (%d%%)\r", (double)ofs, pct);
+			last_ofs = ofs;
+		}
+	}
+}
+
+/* determine if a symlink points outside the current directory tree */
+int unsafe_symlink(char *dest, char *src)
+{
+	char *tok;
+	int depth = 0;
+
+	/* all absolute and null symlinks are unsafe */
+	if (!dest || !(*dest) || (*dest == '/')) return 1;
+
+	src = strdup(src);
+	if (!src) out_of_memory("unsafe_symlink");
+
+	/* find out what our safety margin is */
+	for (tok=strtok(src,"/"); tok; tok=strtok(NULL,"/")) {
+		if (strcmp(tok,"..") == 0) {
+			depth=0;
+		} else if (strcmp(tok,".") == 0) {
+			/* nothing */
+		} else {
+			depth++;
+		}
+	}
+	free(src);
+
+	/* drop by one to account for the filename portion */
+	depth--;
+
+	dest = strdup(dest);
+	if (!dest) out_of_memory("unsafe_symlink");
+
+	for (tok=strtok(dest,"/"); tok; tok=strtok(NULL,"/")) {
+		if (strcmp(tok,"..") == 0) {
+			depth--;
+		} else if (strcmp(tok,".") == 0) {
+			/* nothing */
+		} else {
+			depth++;
+		}
+		/* if at any point we go outside the current directory then
+		   stop - it is unsafe */
+		if (depth < 0) break;
+	}
+
+	free(dest);
+	return (depth < 0);
+}