crypto/openssh-4/sftp-glob.c

   1 /*
   2  * Copyright (c) 2001-2004 Damien Miller <djm@openbsd.org>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "includes.h"
  18 RCSID("$OpenBSD: sftp-glob.c,v 1.15 2004/02/17 07:17:29 djm Exp $");
  19
  20 #include "buffer.h"
  21 #include "bufaux.h"
  22 #include "xmalloc.h"
  23 #include "log.h"
  24
  25 #include "sftp.h"
  26 #include "sftp-common.h"
  27 #include "sftp-client.h"
  28
  29 int remote_glob(struct sftp_conn *, const char *, int,
  30     int (*)(const char *, int), glob_t *);
  31
  32 struct SFTP_OPENDIR {
  33         SFTP_DIRENT **dir;
  34         int offset;
  35 };
  36
  37 static struct {
  38         struct sftp_conn *conn;
  39 } cur;
  40
  41 static void *
  42 fudge_opendir(const char *path)
  43 {
  44         struct SFTP_OPENDIR *r;
  45
  46         r = xmalloc(sizeof(*r));
  47
  48         if (do_readdir(cur.conn, (char *)path, &r->dir)) {
  49                 xfree(r);
  50                 return(NULL);
  51         }
  52
  53         r->offset = 0;
  54
  55         return((void *)r);
  56 }
  57
  58 static struct dirent *
  59 fudge_readdir(struct SFTP_OPENDIR *od)
  60 {
  61         /* Solaris needs sizeof(dirent) + path length (see below) */
  62         static char buf[sizeof(struct dirent) + MAXPATHLEN];
  63         struct dirent *ret = (struct dirent *)buf;
  64 #ifdef __GNU_LIBRARY__
  65         static int inum = 1;
  66 #endif /* __GNU_LIBRARY__ */
  67
  68         if (od->dir[od->offset] == NULL)
  69                 return(NULL);
  70
  71         memset(buf, 0, sizeof(buf));
  72
  73         /*
  74          * Solaris defines dirent->d_name as a one byte array and expects
  75          * you to hack around it.
  76          */
  77 #ifdef BROKEN_ONE_BYTE_DIRENT_D_NAME
  78         strlcpy(ret->d_name, od->dir[od->offset++]->filename, MAXPATHLEN);
  79 #else
  80         strlcpy(ret->d_name, od->dir[od->offset++]->filename,
  81             sizeof(ret->d_name));
  82 #endif
  83 #ifdef __GNU_LIBRARY__
  84         /*
  85          * Idiot glibc uses extensions to struct dirent for readdir with
  86          * ALTDIRFUNCs. Not that this is documented anywhere but the
  87          * source... Fake an inode number to appease it.
  88          */
  89         ret->d_ino = inum++;
  90         if (!inum)
  91                 inum = 1;
  92 #endif /* __GNU_LIBRARY__ */
  93
  94         return(ret);
  95 }
  96
  97 static void
  98 fudge_closedir(struct SFTP_OPENDIR *od)
  99 {
 100         free_sftp_dirents(od->dir);
 101         xfree(od);
 102 }
 103
 104 static int
 105 fudge_lstat(const char *path, struct stat *st)
 106 {
 107         Attrib *a;
 108
 109         if (!(a = do_lstat(cur.conn, (char *)path, 0)))
 110                 return(-1);
 111
 112         attrib_to_stat(a, st);
 113
 114         return(0);
 115 }
 116
 117 static int
 118 fudge_stat(const char *path, struct stat *st)
 119 {
 120         Attrib *a;
 121
 122         if (!(a = do_stat(cur.conn, (char *)path, 0)))
 123                 return(-1);
 124
 125         attrib_to_stat(a, st);
 126
 127         return(0);
 128 }
 129
 130 int
 131 remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
 132     int (*errfunc)(const char *, int), glob_t *pglob)
 133 {
 134         pglob->gl_opendir = fudge_opendir;
 135         pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
 136         pglob->gl_closedir = (void (*)(void *))fudge_closedir;
 137         pglob->gl_lstat = fudge_lstat;
 138         pglob->gl_stat = fudge_stat;
 139
 140         memset(&cur, 0, sizeof(cur));
 141         cur.conn = conn;
 142
 143         return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
 144 }