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/*
* Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
* All rights reserved.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the sendmail distribution.
*/
#include <sm/gen.h>
SM_RCSID("@(#)$Sendmail: sscanf.c,v 1.24 2001/09/11 04:04:49 gshapiro Exp $")
#include <string.h>
#include <sm/varargs.h>
#include <sm/io.h>
#include "local.h"
/*
** SM_EOFREAD -- dummy read function for faked file below
**
** Parameters:
** fp -- file pointer
** buf -- location to place read data
** len -- number of bytes to read
**
** Returns:
** 0 (zero) always
*/
static ssize_t
sm_eofread __P((
SM_FILE_T *fp,
char *buf,
size_t len));
/* ARGSUSED0 */
static ssize_t
sm_eofread(fp, buf, len)
SM_FILE_T *fp;
char *buf;
size_t len;
{
return 0;
}
/*
** SM_IO_SSCANF -- scan a string to find data units
**
** Parameters:
** str -- strings containing data
** fmt -- format directive for finding data units
** ... -- memory locations to place format found data units
**
** Returns:
** Failure: SM_IO_EOF
** Success: number of data units found
**
** Side Effects:
** Attempts to strlen() 'str'; if not a '\0' terminated string
** then the call may SEGV/fail.
** Faking the string 'str' as a file.
*/
int
#if SM_VA_STD
sm_io_sscanf(const char *str, char const *fmt, ...)
#else /* SM_VA_STD */
sm_io_sscanf(str, fmt, va_alist)
const char *str;
char *fmt;
va_dcl
#endif /* SM_VA_STD */
{
int ret;
SM_FILE_T fake;
SM_VA_LOCAL_DECL
fake.sm_magic = SmFileMagic;
fake.f_flags = SMRD;
fake.f_bf.smb_base = fake.f_p = (unsigned char *) str;
fake.f_bf.smb_size = fake.f_r = strlen(str);
fake.f_file = -1;
fake.f_read = sm_eofread;
fake.f_write = NULL;
fake.f_close = NULL;
fake.f_open = NULL;
fake.f_seek = NULL;
fake.f_setinfo = fake.f_getinfo = NULL;
fake.f_type = "sm_io_sscanf:fake";
fake.f_flushfp = NULL;
fake.f_ub.smb_base = NULL;
fake.f_lb.smb_base = NULL;
fake.f_timeout = SM_TIME_FOREVER;
fake.f_timeoutstate = SM_TIME_BLOCK;
SM_VA_START(ap, fmt);
ret = sm_vfscanf(&fake, SM_TIME_FOREVER, fmt, ap);
SM_VA_END(ap);
return ret;
}
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