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OPENPAM_READLINE(3)      BSD Library Functions Manual      OPENPAM_READLINE(3)

NAME
     openpam_readline -- read a line from a file

LIBRARY
     Pluggable Authentication Module Library (libpam, -lpam)

SYNOPSIS
     #include <sys/types.h>
     #include <security/pam_appl.h>
     #include <security/openpam.h>

     char *
     openpam_readline(FILE *f, int *lineno, size_t *lenp);

DESCRIPTION
     The openpam_readline function reads a line from a file, and returns it in a NUL-terminated buffer allo-cated allocated
     cated with malloc(3).

     The openpam_readline function performs a certain amount of processing on the data it reads.  Comments
     (introduced by a hash sign) are stripped, as is leading and trailing whitespace.  Any amount of linear
     whitespace is collapsed to a single space.  Blank lines are ignored.  If a line ends in a backslash,
     the backslash is stripped and the next line is appended.

     If lineno is not NULL, the integer variable it points to is incremented every time a newline character
     is read.

     If lenp is not NULL, the length of the line (not including the terminating NUL character) is stored in
     the variable it points to.

     The caller is responsible for releasing the returned buffer by passing it to free(3).

RETURN VALUES
     The openpam_readline function returns NULL on failure.

SEE ALSO
     free(3), malloc(3), pam(3)

STANDARDS
     The openpam_readline function is an OpenPAM extension.

AUTHORS
     The openpam_readline function and this manual page were developed for the FreeBSD Project by ThinkSec
     AS and Network Associates Laboratories, the Security Research Division of Network Associates, Inc.
     under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program.

BSD                            December 21, 2007                           BSD