sftp-glob.c

   1 /* $OpenBSD: sftp-glob.c,v 1.20 2006/07/10 16:01:57 stevesk Exp $ */
   2 /*
   3  * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include "includes.h"
  19
  20 #include <sys/types.h>
  21 #ifdef HAVE_SYS_STAT_H
  22 # include <sys/stat.h>
  23 #endif
  24
  25 #include <dirent.h>
  26
  27 #include "xmalloc.h"
  28
  29 #include "sftp.h"
  30 #include "sftp-common.h"
  31 #include "sftp-client.h"
  32
  33 int remote_glob(struct sftp_conn *, const char *, int,
  34     int (*)(const char *, int), glob_t *);
  35
  36 struct SFTP_OPENDIR {
  37         SFTP_DIRENT **dir;
  38         int offset;
  39 };
  40
  41 static struct {
  42         struct sftp_conn *conn;
  43 } cur;
  44
  45 static void *
  46 fudge_opendir(const char *path)
  47 {
  48         struct SFTP_OPENDIR *r;
  49
  50         r = xmalloc(sizeof(*r));
  51
  52         if (do_readdir(cur.conn, (char *)path, &r->dir)) {
  53                 xfree(r);
  54                 return(NULL);
  55         }
  56
  57         r->offset = 0;
  58
  59         return((void *)r);
  60 }
  61
  62 static struct dirent *
  63 fudge_readdir(struct SFTP_OPENDIR *od)
  64 {
  65         /* Solaris needs sizeof(dirent) + path length (see below) */
  66         static char buf[sizeof(struct dirent) + MAXPATHLEN];
  67         struct dirent *ret = (struct dirent *)buf;
  68 #ifdef __GNU_LIBRARY__
  69         static int inum = 1;
  70 #endif /* __GNU_LIBRARY__ */
  71
  72         if (od->dir[od->offset] == NULL)
  73                 return(NULL);
  74
  75         memset(buf, 0, sizeof(buf));
  76
  77         /*
  78          * Solaris defines dirent->d_name as a one byte array and expects
  79          * you to hack around it.
  80          */
  81 #ifdef BROKEN_ONE_BYTE_DIRENT_D_NAME
  82         strlcpy(ret->d_name, od->dir[od->offset++]->filename, MAXPATHLEN);
  83 #else
  84         strlcpy(ret->d_name, od->dir[od->offset++]->filename,
  85             sizeof(ret->d_name));
  86 #endif
  87 #ifdef __GNU_LIBRARY__
  88         /*
  89          * Idiot glibc uses extensions to struct dirent for readdir with
  90          * ALTDIRFUNCs. Not that this is documented anywhere but the
  91          * source... Fake an inode number to appease it.
  92          */
  93         ret->d_ino = inum++;
  94         if (!inum)
  95                 inum = 1;
  96 #endif /* __GNU_LIBRARY__ */
  97
  98         return(ret);
  99 }
 100
 101 static void
 102 fudge_closedir(struct SFTP_OPENDIR *od)
 103 {
 104         free_sftp_dirents(od->dir);
 105         xfree(od);
 106 }
 107
 108 static int
 109 fudge_lstat(const char *path, struct stat *st)
 110 {
 111         Attrib *a;
 112
 113         if (!(a = do_lstat(cur.conn, (char *)path, 0)))
 114                 return(-1);
 115
 116         attrib_to_stat(a, st);
 117
 118         return(0);
 119 }
 120
 121 static int
 122 fudge_stat(const char *path, struct stat *st)
 123 {
 124         Attrib *a;
 125
 126         if (!(a = do_stat(cur.conn, (char *)path, 0)))
 127                 return(-1);
 128
 129         attrib_to_stat(a, st);
 130
 131         return(0);
 132 }
 133
 134 int
 135 remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
 136     int (*errfunc)(const char *, int), glob_t *pglob)
 137 {
 138         pglob->gl_opendir = fudge_opendir;
 139         pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
 140         pglob->gl_closedir = (void (*)(void *))fudge_closedir;
 141         pglob->gl_lstat = fudge_lstat;
 142         pglob->gl_stat = fudge_stat;
 143
 144         memset(&cur, 0, sizeof(cur));
 145         cur.conn = conn;
 146
 147         return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
 148 }