PAM_VPROMPT(3) BSD Library Functions Manual PAM_VPROMPT(3)
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 con-
versation 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 argu-
ment.
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.
BSD
December 21, 2007 BSD
