190792Sgshapiro/*
290792Sgshapiro * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
390792Sgshapiro *      All rights reserved.
490792Sgshapiro * Copyright (c) 1990, 1993
590792Sgshapiro *	The Regents of the University of California.  All rights reserved.
690792Sgshapiro *
790792Sgshapiro * This code is derived from software contributed to Berkeley by
890792Sgshapiro * Chris Torek.
990792Sgshapiro *
1090792Sgshapiro * By using this file, you agree to the terms and conditions set
1190792Sgshapiro * forth in the LICENSE file which can be found at the top level of
1290792Sgshapiro * the sendmail distribution.
1390792Sgshapiro */
1490792Sgshapiro
1590792Sgshapiro#include <sm/gen.h>
1698121SgshapiroSM_RCSID("@(#)$Id: sscanf.c,v 1.25 2002/02/01 02:28:00 ca Exp $")
1790792Sgshapiro#include <string.h>
1890792Sgshapiro#include <sm/varargs.h>
1990792Sgshapiro#include <sm/io.h>
2090792Sgshapiro#include "local.h"
2190792Sgshapiro
2290792Sgshapiro/*
2390792Sgshapiro**  SM_EOFREAD -- dummy read function for faked file below
2490792Sgshapiro**
2590792Sgshapiro**	Parameters:
2690792Sgshapiro**		fp -- file pointer
2790792Sgshapiro**		buf -- location to place read data
2890792Sgshapiro**		len -- number of bytes to read
2990792Sgshapiro**
3090792Sgshapiro**	Returns:
3190792Sgshapiro**		0 (zero) always
3290792Sgshapiro*/
3390792Sgshapiro
3490792Sgshapirostatic ssize_t
3590792Sgshapirosm_eofread __P((
3690792Sgshapiro	SM_FILE_T *fp,
3790792Sgshapiro	char *buf,
3890792Sgshapiro	size_t len));
3990792Sgshapiro
4090792Sgshapiro/* ARGSUSED0 */
4190792Sgshapirostatic ssize_t
4290792Sgshapirosm_eofread(fp, buf, len)
4390792Sgshapiro	SM_FILE_T *fp;
4490792Sgshapiro	char *buf;
4590792Sgshapiro	size_t len;
4690792Sgshapiro{
4790792Sgshapiro	return 0;
4890792Sgshapiro}
4990792Sgshapiro
5090792Sgshapiro/*
5190792Sgshapiro**  SM_IO_SSCANF -- scan a string to find data units
5290792Sgshapiro**
5390792Sgshapiro**	Parameters:
5490792Sgshapiro**		str -- strings containing data
5590792Sgshapiro**		fmt -- format directive for finding data units
5690792Sgshapiro**		... -- memory locations to place format found data units
5790792Sgshapiro**
5890792Sgshapiro**	Returns:
5990792Sgshapiro**		Failure: SM_IO_EOF
6090792Sgshapiro**		Success: number of data units found
6190792Sgshapiro**
6290792Sgshapiro**	Side Effects:
6390792Sgshapiro**		Attempts to strlen() 'str'; if not a '\0' terminated string
6490792Sgshapiro**			then the call may SEGV/fail.
6590792Sgshapiro**		Faking the string 'str' as a file.
6690792Sgshapiro*/
6790792Sgshapiro
6890792Sgshapiroint
6990792Sgshapiro#if SM_VA_STD
7090792Sgshapirosm_io_sscanf(const char *str, char const *fmt, ...)
7190792Sgshapiro#else /* SM_VA_STD */
7290792Sgshapirosm_io_sscanf(str, fmt, va_alist)
7390792Sgshapiro	const char *str;
7490792Sgshapiro	char *fmt;
7590792Sgshapiro	va_dcl
7690792Sgshapiro#endif /* SM_VA_STD */
7790792Sgshapiro{
7890792Sgshapiro	int ret;
7990792Sgshapiro	SM_FILE_T fake;
8090792Sgshapiro	SM_VA_LOCAL_DECL
8190792Sgshapiro
8290792Sgshapiro	fake.sm_magic = SmFileMagic;
8390792Sgshapiro	fake.f_flags = SMRD;
8490792Sgshapiro	fake.f_bf.smb_base = fake.f_p = (unsigned char *) str;
8590792Sgshapiro	fake.f_bf.smb_size = fake.f_r = strlen(str);
8690792Sgshapiro	fake.f_file = -1;
8790792Sgshapiro	fake.f_read = sm_eofread;
8890792Sgshapiro	fake.f_write = NULL;
8990792Sgshapiro	fake.f_close = NULL;
9090792Sgshapiro	fake.f_open = NULL;
9190792Sgshapiro	fake.f_seek = NULL;
9290792Sgshapiro	fake.f_setinfo = fake.f_getinfo = NULL;
9390792Sgshapiro	fake.f_type = "sm_io_sscanf:fake";
9490792Sgshapiro	fake.f_flushfp = NULL;
9590792Sgshapiro	fake.f_ub.smb_base = NULL;
9690792Sgshapiro	fake.f_timeout = SM_TIME_FOREVER;
9790792Sgshapiro	fake.f_timeoutstate = SM_TIME_BLOCK;
9890792Sgshapiro	SM_VA_START(ap, fmt);
9990792Sgshapiro	ret = sm_vfscanf(&fake, SM_TIME_FOREVER, fmt, ap);
10090792Sgshapiro	SM_VA_END(ap);
10190792Sgshapiro	return ret;
10290792Sgshapiro}
103