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/*++
/* NAME
/* mail_command_write 3
/* SUMMARY
/* single-command client
/* SYNOPSIS
/* #include <mail_proto.h>
/*
/* int mail_command_write(class, name, format, ...)
/* const char *class;
/* const char *name;
/* const char *format;
/* DESCRIPTION
/* This module implements a client interface for single-command
/* clients: a client that sends a single command and expects
/* a single completion status code.
/*
/* Arguments:
/* .IP class
/* Service type: MAIL_CLASS_PUBLIC or MAIL_CLASS_PRIVATE
/* .IP name
/* Service name (master.cf).
/* .IP format
/* Format string understood by mail_print(3).
/* DIAGNOSTICS
/* The result is -1 if the request could not be sent, otherwise
/* the result is the status reported by the server.
/* Warnings: problems connecting to the requested service.
/* Fatal: out of memory.
/* SEE ALSO
/* mail_command_read(3), server interface
/* mail_proto(5h), client-server protocol
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <stdlib.h> /* 44BSD stdarg.h uses abort() */
#include <stdarg.h>
/* Utility library. */
#include <vstream.h>
/* Global library. */
#include "mail_proto.h"
/* mail_command_write - single-command transaction with completion status */
int mail_command_write(const char *class, const char *name,
const char *fmt,...)
{
va_list ap;
VSTREAM *stream;
int status;
/*
* Talk a little protocol with the specified service.
*/
if ((stream = mail_connect(class, name, BLOCKING)) == 0)
return (-1);
va_start(ap, fmt);
status = mail_vprint(stream, fmt, ap);
va_end(ap);
if (status != 0
|| mail_print(stream, "%s", MAIL_EOF) != 0
|| vstream_fflush(stream) != 0
|| mail_scan(stream, "%d", &status) != 1)
status = -1;
(void) vstream_fclose(stream);
return (status);
}
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