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Petr Šabata |
81d24c |
diff -up openssh-7.2p2/sftp-server.8.sftp-force-mode openssh-7.2p2/sftp-server.8
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Petr Šabata |
81d24c |
--- openssh-7.2p2/sftp-server.8.sftp-force-mode 2016-03-09 19:04:48.000000000 +0100
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Petr Šabata |
81d24c |
+++ openssh-7.2p2/sftp-server.8 2016-06-23 16:18:20.463854117 +0200
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Petr Šabata |
81d24c |
@@ -38,6 +38,7 @@
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Petr Šabata |
81d24c |
.Op Fl P Ar denied_requests
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Petr Šabata |
81d24c |
.Op Fl p Ar allowed_requests
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Petr Šabata |
81d24c |
.Op Fl u Ar umask
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Petr Šabata |
81d24c |
+.Op Fl m Ar force_file_perms
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Petr Šabata |
81d24c |
.Ek
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Petr Šabata |
81d24c |
.Nm
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Petr Šabata |
81d24c |
.Fl Q Ar protocol_feature
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Petr Šabata |
81d24c |
@@ -138,6 +139,12 @@ Sets an explicit
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Petr Šabata |
81d24c |
.Xr umask 2
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Petr Šabata |
81d24c |
to be applied to newly-created files and directories, instead of the
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Petr Šabata |
81d24c |
user's default mask.
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Petr Šabata |
81d24c |
+.It Fl m Ar force_file_perms
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Petr Šabata |
81d24c |
+Sets explicit file permissions to be applied to newly-created files instead
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Petr Šabata |
81d24c |
+of the default or client requested mode. Numeric values include:
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Petr Šabata |
81d24c |
+777, 755, 750, 666, 644, 640, etc. Using both -m and -u switches makes the
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Petr Šabata |
81d24c |
+umask (-u) effective only for newly created directories and explicit mode (-m)
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Petr Šabata |
81d24c |
+for newly created files.
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Petr Šabata |
81d24c |
.El
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Petr Šabata |
81d24c |
.Pp
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Petr Šabata |
81d24c |
On some systems,
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Petr Šabata |
81d24c |
diff -up openssh-7.2p2/sftp-server.c.sftp-force-mode openssh-7.2p2/sftp-server.c
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Petr Šabata |
81d24c |
--- openssh-7.2p2/sftp-server.c.sftp-force-mode 2016-06-23 16:18:20.446854128 +0200
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Petr Šabata |
81d24c |
+++ openssh-7.2p2/sftp-server.c 2016-06-23 16:20:37.950766082 +0200
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Petr Šabata |
81d24c |
@@ -69,6 +69,10 @@ struct sshbuf *oqueue;
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Petr Šabata |
81d24c |
/* Version of client */
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Petr Šabata |
81d24c |
static u_int version;
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Petr Šabata |
81d24c |
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Petr Šabata |
81d24c |
+/* Force file permissions */
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Petr Šabata |
81d24c |
+int permforce = 0;
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Petr Šabata |
81d24c |
+long permforcemode;
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Petr Šabata |
81d24c |
+
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Petr Šabata |
81d24c |
/* SSH2_FXP_INIT received */
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Petr Šabata |
81d24c |
static int init_done;
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Petr Šabata |
81d24c |
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Petr Šabata |
81d24c |
@@ -683,6 +687,7 @@ process_open(u_int32_t id)
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Petr Šabata |
81d24c |
Attrib a;
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Petr Šabata |
81d24c |
char *name;
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Petr Šabata |
81d24c |
int r, handle, fd, flags, mode, status = SSH2_FX_FAILURE;
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Petr Šabata |
81d24c |
+ mode_t old_umask = 0;
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Petr Šabata |
81d24c |
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Petr Šabata |
81d24c |
if ((r = sshbuf_get_cstring(iqueue, &name, NULL)) != 0 ||
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Petr Šabata |
81d24c |
(r = sshbuf_get_u32(iqueue, &pflags)) != 0 || /* portable flags */
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Petr Šabata |
81d24c |
@@ -692,6 +697,10 @@ process_open(u_int32_t id)
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Petr Šabata |
81d24c |
debug3("request %u: open flags %d", id, pflags);
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Petr Šabata |
81d24c |
flags = flags_from_portable(pflags);
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Petr Šabata |
81d24c |
mode = (a.flags & SSH2_FILEXFER_ATTR_PERMISSIONS) ? a.perm : 0666;
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Petr Šabata |
81d24c |
+ if (permforce == 1) { /* Force perm if -m is set */
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Petr Šabata |
81d24c |
+ mode = permforcemode;
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Petr Šabata |
81d24c |
+ old_umask = umask(0); /* so umask does not interfere */
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Petr Šabata |
81d24c |
+ }
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Petr Šabata |
81d24c |
logit("open \"%s\" flags %s mode 0%o",
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Petr Šabata |
81d24c |
name, string_from_portable(pflags), mode);
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Petr Šabata |
81d24c |
if (readonly &&
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Petr Šabata |
81d24c |
@@ -713,6 +722,8 @@ process_open(u_int32_t id)
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Petr Šabata |
81d24c |
}
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Petr Šabata |
81d24c |
}
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Petr Šabata |
81d24c |
}
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Petr Šabata |
81d24c |
+ if (permforce == 1)
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Petr Šabata |
81d24c |
+ (void) umask(old_umask); /* restore umask to something sane */
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Petr Šabata |
81d24c |
if (status != SSH2_FX_OK)
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Petr Šabata |
81d24c |
send_status(id, status);
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Petr Šabata |
81d24c |
free(name);
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Petr Šabata |
81d24c |
@@ -1494,7 +1505,7 @@ sftp_server_usage(void)
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Petr Šabata |
81d24c |
fprintf(stderr,
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Petr Šabata |
81d24c |
"usage: %s [-ehR] [-d start_directory] [-f log_facility] "
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Petr Šabata |
81d24c |
"[-l log_level]\n\t[-P denied_requests] "
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Petr Šabata |
81d24c |
- "[-p allowed_requests] [-u umask]\n"
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Petr Šabata |
81d24c |
+ "[-p allowed_requests] [-u umask] [-m force_file_perms]\n"
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Petr Šabata |
81d24c |
" %s -Q protocol_feature\n",
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Petr Šabata |
81d24c |
__progname, __progname);
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Petr Šabata |
81d24c |
exit(1);
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Petr Šabata |
81d24c |
@@ -1520,7 +1531,7 @@ sftp_server_main(int argc, char **argv,
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Petr Šabata |
81d24c |
pw = pwcopy(user_pw);
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Petr Šabata |
81d24c |
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Petr Šabata |
81d24c |
while (!skipargs && (ch = getopt(argc, argv,
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Petr Šabata |
81d24c |
- "d:f:l:P:p:Q:u:cehR")) != -1) {
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Petr Šabata |
81d24c |
+ "d:f:l:P:p:Q:u:m:cehR")) != -1) {
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Petr Šabata |
81d24c |
switch (ch) {
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Petr Šabata |
81d24c |
case 'Q':
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Petr Šabata |
81d24c |
if (strcasecmp(optarg, "requests") != 0) {
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Petr Šabata |
81d24c |
@@ -1580,6 +1591,15 @@ sftp_server_main(int argc, char **argv,
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Petr Šabata |
81d24c |
fatal("Invalid umask \"%s\"", optarg);
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Petr Šabata |
81d24c |
(void)umask((mode_t)mask);
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Petr Šabata |
81d24c |
break;
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Petr Šabata |
81d24c |
+ case 'm':
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Petr Šabata |
81d24c |
+ /* Force permissions on file received via sftp */
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Petr Šabata |
81d24c |
+ permforce = 1;
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Petr Šabata |
81d24c |
+ permforcemode = strtol(optarg, &cp, 8);
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Petr Šabata |
81d24c |
+ if (permforcemode < 0 || permforcemode > 0777 ||
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Petr Šabata |
81d24c |
+ *cp != '\0' || (permforcemode == 0 &&
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Petr Šabata |
81d24c |
+ errno != 0))
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Petr Šabata |
81d24c |
+ fatal("Invalid file mode \"%s\"", optarg);
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Petr Šabata |
81d24c |
+ break;
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Petr Šabata |
81d24c |
case 'h':
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Petr Šabata |
81d24c |
default:
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Petr Šabata |
81d24c |
sftp_server_usage();
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