Changed one strcpy() into a strlcpy().
[rsync/rsync.git] / flist.c
diff --git a/flist.c b/flist.c
index fcfde84..1f11193 100644 (file)
--- a/flist.c
+++ b/flist.c
@@ -480,19 +480,16 @@ void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
        }
 #endif
 
-       if (always_checksum) {
+       if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
                char *sum;
+               int slen = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
                if (S_ISREG(mode))
                        sum = file->u.sum;
-               else if (protocol_version < 28) {
+               else {
                        /* Prior to 28, we sent a useless set of nulls. */
                        sum = empty_sum;
-               } else
-                       sum = NULL;
-               if (sum) {
-                       write_buf(f, sum,
-                           protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
                }
+               write_buf(f, sum, slen);
        }
 
        strlcpy(lastname, fname, MAXPATHLEN);
@@ -546,7 +543,7 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
                rprintf(FERROR,
                        "overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
                        flags, l1, l2, safe_fname(lastname));
-               overflow("receive_file_entry");
+               overflow_exit("receive_file_entry");
        }
 
        strlcpy(thisname, lastname, l1 + 1);
@@ -611,7 +608,7 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
                if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
                        rprintf(FERROR, "overflow: linkname_len=%d\n",
                                linkname_len - 1);
-                       overflow("receive_file_entry");
+                       overflow_exit("receive_file_entry");
                }
        }
        else
@@ -655,6 +652,9 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
                if (flags & XMIT_TOP_DIR) {
                        in_del_hier = 1;
                        del_hier_name_len = file->dir.depth == 0 ? 0 : l1 + l2;
+                       if (relative_paths && del_hier_name_len > 2
+                           && basename_len == 1+1 && *basename == '.')
+                               del_hier_name_len -= 2;
                        file->flags |= FLAG_TOP_DIR | FLAG_DEL_HERE;
                } else if (in_del_hier) {
                        if (!relative_paths || !del_hier_name_len
@@ -705,20 +705,17 @@ static struct file_struct *receive_file_entry(struct file_list *flist,
        }
 #endif
 
-       if (always_checksum) {
+       if (always_checksum && (sum_len || protocol_version < 28)) {
                char *sum;
+               int slen = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
                if (sum_len) {
                        file->u.sum = sum = bp;
                        /*bp += sum_len;*/
-               } else if (protocol_version < 28) {
+               } else {
                        /* Prior to 28, we get a useless set of nulls. */
                        sum = empty_sum;
-               } else
-                       sum = NULL;
-               if (sum) {
-                       read_buf(f, sum,
-                           protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
                }
+               read_buf(f, sum, slen);
        }
 
        if (!preserve_perms) {
@@ -1117,11 +1114,21 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        if (l == 2 && fname[0] == '.') {
                                /* Turn "./" into just "." rather than "./." */
                                fname[1] = '\0';
-                       } else if (l < MAXPATHLEN) {
+                       } else {
+                               if (l + 1 >= MAXPATHLEN)
+                                       overflow_exit("send_file_list");
                                fname[l++] = '.';
                                fname[l] = '\0';
                        }
                        is_dot_dir = 1;
+               } else if (l > 1 && fname[l-1] == '.' && fname[l-2] == '.'
+                   && (l == 2 || fname[l-3] == '/')) {
+                       if (l + 2 >= MAXPATHLEN)
+                               overflow_exit("send_file_list");
+                       fname[l++] = '/';
+                       fname[l++] = '.';
+                       fname[l] = '\0';
+                       is_dot_dir = 1;
                } else {
                        is_dot_dir = fname[l-1] == '.'
                                   && (l == 1 || fname[l-2] == '/');
@@ -1146,42 +1153,20 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                if (!relative_paths) {
                        p = strrchr(fname, '/');
                        if (p) {
-                               *p = 0;
+                               *p = '\0';
                                if (p == fname)
                                        dir = "/";
                                else
                                        dir = fname;
                                fname = p + 1;
                        }
-               } else if (implied_dirs && (p=strrchr(fname,'/')) && p != fname) {
-                       /* this ensures we send the intermediate directories,
-                          thus getting their permissions right */
-                       char *lp = lastpath, *fn = fname, *slash = fname;
-                       *p = 0;
-                       /* Skip any initial directories in our path that we
-                        * have in common with lastpath. */
-                       while (*fn && *lp == *fn) {
-                               if (*fn == '/')
-                                       slash = fn;
-                               lp++, fn++;
-                       }
-                       *p = '/';
-                       if (fn != p || (*lp && *lp != '/')) {
-                               int save_copy_links = copy_links;
-                               int save_xfer_dirs = xfer_dirs;
-                               copy_links = copy_unsafe_links;
-                               xfer_dirs = 1;
-                               while ((slash = strchr(slash+1, '/')) != 0) {
-                                       *slash = 0;
-                                       send_file_name(f, flist, fname, 0);
-                                       *slash = '/';
-                               }
-                               copy_links = save_copy_links;
-                               xfer_dirs = save_xfer_dirs;
-                               *p = 0;
-                               strlcpy(lastpath, fname, sizeof lastpath);
-                               *p = '/';
-                       }
+               } else if ((p = strstr(fname, "/./")) != NULL) {
+                       *p = '\0';
+                       if (p == fname)
+                               dir = "/";
+                       else
+                               dir = fname;
+                       fname = p + 3;
                }
 
                if (!*fname)
@@ -1191,7 +1176,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        static char *lastdir;
                        static int lastdir_len;
 
-                       strcpy(olddir, curr_dir); /* can't overflow */
+                       strlcpy(olddir, curr_dir, sizeof olddir);
 
                        if (!push_dir(dir)) {
                                io_error |= IOERR_GENERAL;
@@ -1209,6 +1194,37 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        }
                }
 
+               if (implied_dirs && (p=strrchr(fname,'/')) && p != fname) {
+                       /* Send the implied directories at the start of the
+                        * source spec, so we get their permissions right. */
+                       char *lp = lastpath, *fn = fname, *slash = fname;
+                       *p = '\0';
+                       /* Skip any initial directories in our path that we
+                        * have in common with lastpath. */
+                       while (*fn && *lp == *fn) {
+                               if (*fn == '/')
+                                       slash = fn;
+                               lp++, fn++;
+                       }
+                       *p = '/';
+                       if (fn != p || (*lp && *lp != '/')) {
+                               int save_copy_links = copy_links;
+                               int save_xfer_dirs = xfer_dirs;
+                               copy_links = copy_unsafe_links;
+                               xfer_dirs = 1;
+                               while ((slash = strchr(slash+1, '/')) != 0) {
+                                       *slash = '\0';
+                                       send_file_name(f, flist, fname, 0);
+                                       *slash = '/';
+                               }
+                               copy_links = save_copy_links;
+                               xfer_dirs = save_xfer_dirs;
+                               *p = '\0';
+                               strlcpy(lastpath, fname, sizeof lastpath);
+                               *p = '/';
+                       }
+               }
+
                if (one_file_system)
                        filesystem_dev = st.st_dev;
 
@@ -1222,7 +1238,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        flist_dir_len = 0;
                        if (!pop_dir(olddir)) {
                                rsyserr(FERROR, errno, "pop_dir %s failed",
-                                       full_fname(dir));
+                                       full_fname(olddir));
                                exit_cleanup(RERR_FILESELECT);
                        }
                }
@@ -1458,8 +1474,12 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 {
        int i, prev_i = 0;
 
-       if (!flist || flist->count == 0)
+       if (!flist)
+               return;
+       if (flist->count == 0) {
+               flist->high = -1;
                return;
+       }
 
        sorting_flist = flist;
        qsort(flist->files, flist->count,
@@ -1511,8 +1531,8 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
                        }
                        /* Make sure that if we unduplicate '.', that we don't
                         * lose track of a user-specified top directory. */
-                       if (flist->files[drop]->flags & FLAG_TOP_DIR)
-                               flist->files[keep]->flags |= FLAG_TOP_DIR;
+                       flist->files[keep]->flags |= flist->files[drop]->flags
+                                                  & (FLAG_TOP_DIR|FLAG_DEL_HERE);
 
                        clear_file(drop, flist);
 
@@ -1667,8 +1687,13 @@ int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
                                break;
                        case s_SLASH:
                                type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
-                               state1 = s_BASE;
                                c1 = (uchar*)f1->basename;
+                               if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
+                                       type1 = t_ITEM;
+                                       state1 = s_TRAILING;
+                                       c1 = (uchar*)"";
+                               } else
+                                       state1 = s_BASE;
                                break;
                        case s_BASE:
                                state1 = s_TRAILING;
@@ -1692,8 +1717,13 @@ int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
                                break;
                        case s_SLASH:
                                type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
-                               state2 = s_BASE;
                                c2 = (uchar*)f2->basename;
+                               if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
+                                       type2 = t_ITEM;
+                                       state2 = s_TRAILING;
+                                       c2 = (uchar*)"";
+                               } else
+                                       state2 = s_BASE;
                                break;
                        case s_BASE:
                                state2 = s_TRAILING;