The
openpam_subst()
function expands a string, substituting PAM item
values for all occurrences of specific substitution codes.
The
template
argument points to the initial string.
The result is stored in the buffer pointed to by the
buf
argument; the
bufsize
argument specifies the size of that buffer.
The actual size of the resulting string, including the terminating NUL
character, is stored in the location pointed to by the
bufsize
argument.
If
buf
is NULL, or if the buffer is too small to hold the expanded
string,
bufsize
is updated to reflect the amount of space required to
hold the entire string, and
openpam_subst()
returns
PAM_TRY_AGAIN.
If
openpam_subst()
fails for any other reason, the
bufsize
argument is
untouched, but part of the buffer may still have been overwritten.
Substitution codes are introduced by a percent character and correspond
to PAM items:
amp;%H
|
Replaced by the current value of the
PAM_RHOST
item.
|
amp;%h
|
Replaced by the current value of the
PAM_HOST
item.
|
amp;%s
|
Replaced by the current value of the
PAM_SERVICE
item.
|
amp;%t
|
Replaced by the current value of the
PAM_TTY
item.
|
amp;%U
|
Replaced by the current value of the
PAM_RUSER
item.
|
amp;%u
|
Replaced by the current value of the
PAM_USER
item.
|