diff options
Diffstat (limited to 'doc/doc-docbook/spec.xfpt')
| -rw-r--r-- | doc/doc-docbook/spec.xfpt | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index 5c42afc93..437b13df0 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -22998,6 +22998,11 @@ If &%file%& or &%directory%& is set for a delivery from a redirection, it is used to determine the file or directory name for the delivery. Normally, the contents of &$address_file$& are used in some way in the string expansion. .endlist +If the &%create_file%& option is set to a path which +matches (see the option definition below for details) +a file or directory name +for the delivery, that name becomes de-tainted. + .cindex "tainted data" "in filenames" .cindex appendfile "tainted data" Tainted data may not be used for a file or directory name. @@ -23145,14 +23150,34 @@ directories defined by the &%directory%& option. In the case of maildir delivery, it applies to the top level directory, not the maildir directories beneath. +.new The option must be set to one of the words &"anywhere"&, &"inhome"&, or -&"belowhome"&. In the second and third cases, a home directory must have been -set for the transport. This option is not useful when an explicit filename is +&"belowhome"&, or to an absolute path. +.wen + +In the second and third cases, a home directory must have been +set for the transport, and the file or directory being created must +reside within it. +The "belowhome" checking additionally checks for attempts to use "../" +to evade the testing. +This option is not useful when an explicit filename is given for normal mailbox deliveries. It is intended for the case when filenames are generated from users' &_.forward_& files. These are usually handled by an &(appendfile)& transport called &%address_file%&. See also &%file_must_exist%&. +.new +In the fourth case, +the value given for this option must be an absolute path for an +existing directory. +The value is used for checking instead of a home directory; +checking is done in "belowhome" mode. + +.cindex "tainted data" "de-tainting" +If "belowhome" checking is used, the file or directory path +becomes de-tainted. +.wen + .option directory appendfile string&!! unset This option is mutually exclusive with the &%file%& option, but one of &%file%& @@ -23165,6 +23190,11 @@ appended to a single mailbox file. A number of different formats are provided (see &%maildir_format%& and &%mailstore_format%&), and see section &<<SECTopdir>>& for further details of this form of delivery. +.new +The result of expansion must not be tainted, unless the &%create_file%& option +specifies a path. +.wen + .option directory_file appendfile string&!! "see below" .cindex "base62" @@ -23197,6 +23227,11 @@ specifies a single file, to which the message is appended. One or more of &%use_fcntl_lock%&, &%use_flock_lock%&, or &%use_lockfile%& must be set with &%file%&. +.new +The result of expansion must not be tainted, unless the &%create_file%& option +specifies a path. +.wen + .cindex "NFS" "lock file" .cindex "locking files" .cindex "lock files" |