+}
+
+/* reverse a push_dir call */
+int pop_dir(char *dir)
+{
+ int ret;
+
+ ret = chdir(dir);
+ if (ret) {
+ free(dir);
+ return ret;
+ }
+
+ strlcpy(curr_dir, dir, sizeof(curr_dir));
+
+ free(dir);
+
+ return 0;
+}
+
+/* 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;
+}
+
+static OFF_T last_ofs;
+static struct timeval print_time;
+static struct timeval start_time;
+static OFF_T start_ofs;
+
+static unsigned long msdiff(struct timeval *t1, struct timeval *t2)
+{
+ return (t2->tv_sec - t1->tv_sec) * 1000
+ + (t2->tv_usec - t1->tv_usec) / 1000;
+}
+
+
+/**
+ * @param ofs Current position in file
+ * @param size Total size of file
+ * @param is_last True if this is the last time progress will be
+ * printed for this file, so we should output a newline. (Not
+ * necessarily the same as all bytes being received.)
+ **/
+static void rprint_progress(OFF_T ofs, OFF_T size, struct timeval *now,
+ int is_last)
+{
+ int pct = (ofs == size) ? 100 : (int)((100.0*ofs)/size);
+ unsigned long diff = msdiff(&start_time, now);
+ double rate = diff ? (double) (ofs-start_ofs) * 1000.0 / diff / 1024.0 : 0;
+ const char *units;
+ /* If we've finished transferring this file, show the time taken;
+ * otherwise show expected time to complete. That's kind of
+ * inconsistent, but people can probably cope. Hopefully we'll
+ * get more consistent and complete progress reporting soon. --
+ * mbp */
+ double remain = is_last
+ ? (double) diff / 1000.0
+ : rate ? (double) (size-ofs) / rate / 1000.0 : 0.0;
+ int remain_h, remain_m, remain_s;
+
+ if (rate > 1024*1024) {
+ rate /= 1024.0 * 1024.0;
+ units = "GB/s";
+ } else if (rate > 1024) {
+ rate /= 1024.0;
+ units = "MB/s";
+ } else {
+ units = "kB/s";
+ }
+
+ remain_s = (int) remain % 60;
+ remain_m = (int) (remain / 60.0) % 60;
+ remain_h = (int) (remain / 3600.0);
+
+ rprintf(FINFO, "%12.0f %3d%% %7.2f%s %4d:%02d:%02d%s",
+ (double) ofs, pct, rate, units,
+ remain_h, remain_m, remain_s,
+ is_last ? "\n" : "\r");
+}
+
+void end_progress(OFF_T size)
+{
+ extern int do_progress, am_server;
+
+ if (do_progress && !am_server) {
+ struct timeval now;
+ gettimeofday(&now, NULL);
+ rprint_progress(size, size, &now, True);
+ }
+ last_ofs = 0;
+ start_ofs = 0;
+ print_time.tv_sec = print_time.tv_usec = 0;
+ start_time.tv_sec = start_time.tv_usec = 0;
+}
+
+void show_progress(OFF_T ofs, OFF_T size)
+{
+ extern int do_progress, am_server;
+ struct timeval now;
+
+ gettimeofday(&now, NULL);
+
+ if (!start_time.tv_sec && !start_time.tv_usec) {
+ start_time.tv_sec = now.tv_sec;
+ start_time.tv_usec = now.tv_usec;
+ start_ofs = ofs;
+ }
+
+ if (do_progress
+ && !am_server
+ && ofs > last_ofs + 1000
+ && msdiff(&print_time, &now) > 250) {
+ rprint_progress(ofs, size, &now, False);
+ last_ofs = ofs;
+ print_time.tv_sec = now.tv_sec;
+ print_time.tv_usec = now.tv_usec;
+ }
+}
+
+/* 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);
+}
+
+
+/****************************************************************************
+ return the date and time as a string
+****************************************************************************/
+char *timestring(time_t t)
+{
+ static char TimeBuf[200];
+ struct tm *tm = localtime(&t);
+
+#ifdef HAVE_STRFTIME
+ strftime(TimeBuf,sizeof(TimeBuf)-1,"%Y/%m/%d %T",tm);
+#else
+ strlcpy(TimeBuf, asctime(tm), sizeof(TimeBuf));