sftp-glob.c

   1 /* $OpenBSD: sftp-glob.c,v 1.19 2006/03/25 13:17:02 djm 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 "buffer.h"
  28 #include "bufaux.h"
  29 #include "xmalloc.h"
  30 #include "log.h"
  31
  32 #include "sftp.h"
  33 #include "sftp-common.h"
  34 #include "sftp-client.h"
  35
  36 int remote_glob(struct sftp_conn *, const char *, int,
  37     int (*)(const char *, int), glob_t *);
  38
  39 struct SFTP_OPENDIR {
  40         SFTP_DIRENT **dir;
  41         int offset;
  42 };
  43
  44 static struct {
  45         struct sftp_conn *conn;
  46 } cur;
  47
  48 static void *
  49 fudge_opendir(const char *path)
  50 {
  51         struct SFTP_OPENDIR *r;
  52
  53         r = xmalloc(sizeof(*r));
  54
  55         if (do_readdir(cur.conn, (char *)path, &r->dir)) {
  56                 xfree(r);
  57                 return(NULL);
  58         }
  59
  60         r->offset = 0;
  61
  62         return((void *)r);
  63 }
  64
  65 static struct dirent *
  66 fudge_readdir(struct SFTP_OPENDIR *od)
  67 {
  68         /* Solaris needs sizeof(dirent) + path length (see below) */
  69         static char buf[sizeof(struct dirent) + MAXPATHLEN];
  70         struct dirent *ret = (struct dirent *)buf;
  71 #ifdef __GNU_LIBRARY__
  72         static int inum = 1;
  73 #endif /* __GNU_LIBRARY__ */
  74
  75         if (od->dir[od->offset] == NULL)
  76                 return(NULL);
  77
  78         memset(buf, 0, sizeof(buf));
  79
  80         /*
  81          * Solaris defines dirent->d_name as a one byte array and expects
  82          * you to hack around it.
  83          */
  84 #ifdef BROKEN_ONE_BYTE_DIRENT_D_NAME
  85         strlcpy(ret->d_name, od->dir[od->offset++]->filename, MAXPATHLEN);
  86 #else
  87         strlcpy(ret->d_name, od->dir[od->offset++]->filename,
  88             sizeof(ret->d_name));
  89 #endif
  90 #ifdef __GNU_LIBRARY__
  91         /*
  92          * Idiot glibc uses extensions to struct dirent for readdir with
  93          * ALTDIRFUNCs. Not that this is documented anywhere but the
  94          * source... Fake an inode number to appease it.
  95          */
  96         ret->d_ino = inum++;
  97         if (!inum)
  98                 inum = 1;
  99 #endif /* __GNU_LIBRARY__ */
 100
 101         return(ret);
 102 }
 103
 104 static void
 105 fudge_closedir(struct SFTP_OPENDIR *od)
 106 {
 107         free_sftp_dirents(od->dir);
 108         xfree(od);
 109 }
 110
 111 static int
 112 fudge_lstat(const char *path, struct stat *st)
 113 {
 114         Attrib *a;
 115
 116         if (!(a = do_lstat(cur.conn, (char *)path, 0)))
 117                 return(-1);
 118
 119         attrib_to_stat(a, st);
 120
 121         return(0);
 122 }
 123
 124 static int
 125 fudge_stat(const char *path, struct stat *st)
 126 {
 127         Attrib *a;
 128
 129         if (!(a = do_stat(cur.conn, (char *)path, 0)))
 130                 return(-1);
 131
 132         attrib_to_stat(a, st);
 133
 134         return(0);
 135 }
 136
 137 int
 138 remote_glob(struct sftp_conn *conn, const char *pattern, int flags,
 139     int (*errfunc)(const char *, int), glob_t *pglob)
 140 {
 141         pglob->gl_opendir = fudge_opendir;
 142         pglob->gl_readdir = (struct dirent *(*)(void *))fudge_readdir;
 143         pglob->gl_closedir = (void (*)(void *))fudge_closedir;
 144         pglob->gl_lstat = fudge_lstat;
 145         pglob->gl_stat = fudge_stat;
 146
 147         memset(&cur, 0, sizeof(cur));
 148         cur.conn = conn;
 149
 150         return(glob(pattern, flags | GLOB_ALTDIRFUNC, errfunc, pglob));
 151 }