NAME
pam_vprompt —
call the conversation
function
LIBRARY
Pluggable Authentication Module Library (libpam, -lpam)
SYNOPSIS
#include
<sys/types.h>
#include
<security/pam_appl.h>
int
pam_vprompt(const
pam_handle_t *pamh, int
style, char **resp,
const char *fmt,
va_list ap);
DESCRIPTION
The pam_vprompt function constructs a
string from the fmt and ap
arguments using vsnprintf(3), and passes it to the given PAM context's
conversation function.
The style argument specifies the type of interaction requested, and must be one of the following:
PAM_PROMPT_ECHO_OFF- Display the message and obtain the user's response without displaying it.
PAM_PROMPT_ECHO_ON- Display the message and obtain the user's response.
PAM_ERROR_MSG- Display the message as an error message, and do not wait for a response.
PAM_TEXT_INFO- Display the message as an informational message, and do not wait for a response.
A pointer to the response, or NULL if the
conversation function did not return one, is stored in the location pointed
to by the resp argument.
The message and response should not exceed
PAM_MAX_MSG_SIZE or
PAM_MAX_RESP_SIZE, respectively. If they do, they
may be truncated.
RETURN VALUES
The pam_vprompt function returns one of
the following values:
- [
PAM_BUF_ERR] - Memory buffer error.
- [
PAM_CONV_ERR] - Conversation failure.
- [
PAM_SYSTEM_ERR] - System error.
SEE ALSO
pam(3), pam_error(3), pam_info(3), pam_prompt(3), pam_strerror(3), pam_verror(3), pam_vinfo(3), vsnprintf(3)
STANDARDS
The pam_vprompt function is an OpenPAM
extension.
AUTHORS
The pam_vprompt 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.