2002-02-17 21:56:45 +00:00
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/*
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* Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
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* All rights reserved.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*/
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#include <sm/gen.h>
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2002-06-11 21:12:04 +00:00
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SM_RCSID("@(#)$Id: sscanf.c,v 1.25 2002/02/01 02:28:00 ca Exp $")
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2002-02-17 21:56:45 +00:00
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#include <string.h>
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#include <sm/varargs.h>
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#include <sm/io.h>
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#include "local.h"
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/*
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** SM_EOFREAD -- dummy read function for faked file below
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**
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** Parameters:
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** fp -- file pointer
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** buf -- location to place read data
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** len -- number of bytes to read
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**
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** Returns:
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** 0 (zero) always
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*/
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static ssize_t
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sm_eofread __P((
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SM_FILE_T *fp,
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char *buf,
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size_t len));
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/* ARGSUSED0 */
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static ssize_t
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sm_eofread(fp, buf, len)
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SM_FILE_T *fp;
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char *buf;
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size_t len;
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{
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return 0;
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}
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/*
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** SM_IO_SSCANF -- scan a string to find data units
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**
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** Parameters:
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** str -- strings containing data
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** fmt -- format directive for finding data units
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** ... -- memory locations to place format found data units
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**
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** Returns:
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** Failure: SM_IO_EOF
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** Success: number of data units found
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**
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** Side Effects:
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** Attempts to strlen() 'str'; if not a '\0' terminated string
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** then the call may SEGV/fail.
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** Faking the string 'str' as a file.
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*/
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int
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#if SM_VA_STD
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sm_io_sscanf(const char *str, char const *fmt, ...)
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#else /* SM_VA_STD */
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sm_io_sscanf(str, fmt, va_alist)
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const char *str;
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char *fmt;
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va_dcl
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#endif /* SM_VA_STD */
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{
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int ret;
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SM_FILE_T fake;
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SM_VA_LOCAL_DECL
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fake.sm_magic = SmFileMagic;
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fake.f_flags = SMRD;
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fake.f_bf.smb_base = fake.f_p = (unsigned char *) str;
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fake.f_bf.smb_size = fake.f_r = strlen(str);
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fake.f_file = -1;
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fake.f_read = sm_eofread;
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fake.f_write = NULL;
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fake.f_close = NULL;
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fake.f_open = NULL;
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fake.f_seek = NULL;
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fake.f_setinfo = fake.f_getinfo = NULL;
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fake.f_type = "sm_io_sscanf:fake";
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fake.f_flushfp = NULL;
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fake.f_ub.smb_base = NULL;
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fake.f_timeout = SM_TIME_FOREVER;
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fake.f_timeoutstate = SM_TIME_BLOCK;
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SM_VA_START(ap, fmt);
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ret = sm_vfscanf(&fake, SM_TIME_FOREVER, fmt, ap);
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SM_VA_END(ap);
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return ret;
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}
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