herrie/src/vfs_regular.c

   1 /*
   2  * Copyright (c) 2006-2011 Ed Schouten <ed@80386.nl>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26 /**
  27  * @file vfs_regular.c
  28  * @brief Regular on-disk file and directory access.
  29  */
  30
  31 #include "stdinc.h"
  32
  33 #include "config.h"
  34 #include "vfs.h"
  35 #include "vfs_modules.h"
  36
  37 int
  38 vfs_file_match(struct vfsent *ve, int isdir)
  39 {
  40         return (isdir);
  41 }
  42
  43 FILE *
  44 vfs_file_open(struct vfsent *ve)
  45 {
  46         return fopen(ve->filename, "rb");
  47 }
  48
  49 int
  50 vfs_dir_match(struct vfsent *ve, int isdir)
  51 {
  52 #ifdef S_ISLNK
  53         struct stat fs;
  54 #endif /* S_ISLNK */
  55
  56         if (!isdir)
  57                 return (-1);
  58
  59 #ifdef S_ISLNK
  60         /* Disallow recursing on symlinked directories */
  61         if (lstat(ve->filename, &fs) != 0)
  62                 return (-1);
  63         if (S_ISLNK(fs.st_mode))
  64                 ve->recurse = 0;
  65 #endif /* S_ISLNK */
  66
  67         return (0);
  68 }
  69
  70 int
  71 vfs_dir_populate(struct vfsent *ve)
  72 {
  73         GDir *dir;
  74         const char *sfn;
  75         struct vfsref *nvr, *svr;
  76         int hide_dotfiles;
  77
  78         hide_dotfiles = config_getopt_bool("vfs.dir.hide_dotfiles");
  79
  80         if ((dir = g_dir_open(ve->filename, 0, NULL)) == NULL)
  81                 return (-1);
  82
  83         while ((sfn = g_dir_read_name(dir)) != NULL) {
  84                 /* Hide dotted files */
  85                 if (hide_dotfiles && sfn[0] == '.')
  86                         continue;
  87
  88                 if ((nvr = vfs_lookup(sfn, NULL, ve->filename, 1)) == NULL)
  89                         continue;
  90
  91                 /*
  92                  * Add the items to the tailq in a sorted manner.
  93                  */
  94                 VFS_LIST_FOREACH(&ve->population, svr) {
  95                         /* Store the file if the sorting priority is lower */
  96                         if (nvr->ent->vmod->sortorder < svr->ent->vmod->sortorder ||
  97                             /* Or if they are the same and the filename is lower */
  98                             (nvr->ent->vmod->sortorder == svr->ent->vmod->sortorder &&
  99                             strcasecmp(vfs_name(nvr), vfs_name(svr)) < 0)) {
 100                                 vfs_list_insert_before(&ve->population, nvr, svr);
 101                                 break;
 102                         }
 103                 }
 104
 105                 if (svr == NULL)
 106                         vfs_list_insert_tail(&ve->population, nvr);
 107         }
 108
 109         g_dir_close(dir);
 110
 111         return (0);
 112 }