1595 lines
37 KiB
C
1595 lines
37 KiB
C
/* $OpenBSD: vfprintf.c,v 1.67 2014/12/21 00:23:30 daniel Exp $ */
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/*-
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* Copyright (c) 1999-2005, 2008, 2010-2015
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* Todd C. Miller <Todd.Miller@courtesan.com>
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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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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* From: @(#)vfprintf.c 8.1 (Berkeley) 6/4/93
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*/
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/*
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* v?snprintf/v?asprintf based on OpenBSD vfprintf.c.
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*/
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#include <config.h>
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#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_SNPRINTF) || \
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!defined(HAVE_VASPRINTF) || !defined(HAVE_ASPRINTF) || \
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defined(PREFER_PORTABLE_SNPRINTF)
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <errno.h>
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#ifdef HAVE_NL_LANGINFO
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# include <langinfo.h>
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#endif
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#include <limits.h>
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#include <stdarg.h>
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#ifdef STDC_HEADERS
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# include <stddef.h>
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# include <stdlib.h>
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#else
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# ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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# endif
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#endif /* STDC_HEADERS */
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#if defined(HAVE_STDINT_H)
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# include <stdint.h>
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#elif defined(HAVE_INTTYPES_H)
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# include <inttypes.h>
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#endif
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#include <stdio.h>
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#ifdef HAVE_STRING_H
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# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
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# include <memory.h>
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# endif
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# include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#if defined(HAVE_MALLOC_H) && !defined(STDC_HEADERS)
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# include <malloc.h>
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#endif /* HAVE_MALLOC_H && !STDC_HEADERS */
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#include <unistd.h>
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#ifdef PRINTF_WIDE_CHAR
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# include <wchar.h>
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#endif
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#include "sudo_compat.h"
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/* Avoid printf format attacks by ignoring the %n escape. */
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#define NO_PRINTF_PERCENT_N
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union arg {
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int intarg;
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unsigned int uintarg;
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long longarg;
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unsigned long ulongarg;
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long long longlongarg;
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unsigned long long ulonglongarg;
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ptrdiff_t ptrdiffarg;
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size_t sizearg;
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ssize_t ssizearg;
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intmax_t intmaxarg;
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uintmax_t uintmaxarg;
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void *pvoidarg;
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char *pchararg;
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signed char *pschararg;
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short *pshortarg;
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int *pintarg;
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long *plongarg;
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long long *plonglongarg;
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ptrdiff_t *pptrdiffarg;
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ssize_t *pssizearg;
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intmax_t *pintmaxarg;
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#ifdef FLOATING_POINT
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double doublearg;
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long double longdoublearg;
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#endif
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#ifdef PRINTF_WIDE_CHAR
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wint_t wintarg;
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wchar_t *pwchararg;
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#endif
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};
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static int __find_arguments(const char *fmt0, va_list ap, union arg **argtable,
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size_t *argtablesiz);
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static int __grow_type_table(unsigned char **typetable, int *tablesize);
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static int xxxprintf(char **, size_t, int, const char *, va_list);
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#if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
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# define MAP_ANON MAP_ANONYMOUS
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#endif
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/*
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* Allocate "size" bytes via mmap.
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*/
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static void *
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mmap_alloc(size_t size)
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{
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void *p;
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#ifndef MAP_ANON
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int fd;
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if ((fd = open("/dev/zero", O_RDWR)) == -1)
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return NULL;
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p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
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close(fd);
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#else
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p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
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#endif
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if (p == MAP_FAILED)
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return NULL;
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return p;
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}
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/*
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* Unmap "size" bytes of the ptr.
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*/
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static void
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mmap_free(void *ptr, size_t size)
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{
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if (ptr != NULL)
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munmap(ptr, size);
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}
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#ifdef PRINTF_WIDE_CHAR
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/*
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* Convert a wide character string argument for the %ls format to a multibyte
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* string representation. If not -1, prec specifies the maximum number of
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* bytes to output, and also means that we can't assume that the wide char
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* string is null-terminated.
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*/
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static char *
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__wcsconv(wchar_t *wcsarg, int prec)
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{
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mbstate_t mbs;
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char buf[MB_LEN_MAX];
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wchar_t *p;
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char *convbuf;
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size_t clen, nbytes;
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/* Allocate space for the maximum number of bytes we could output. */
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if (prec < 0) {
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memset(&mbs, 0, sizeof(mbs));
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p = wcsarg;
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nbytes = wcsrtombs(NULL, (const wchar_t **)&p, 0, &mbs);
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if (nbytes == (size_t)-1) {
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errno = EILSEQ;
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return NULL;
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}
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} else {
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/*
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* Optimisation: if the output precision is small enough,
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* just allocate enough memory for the maximum instead of
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* scanning the string.
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*/
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if (prec < 128)
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nbytes = prec;
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else {
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nbytes = 0;
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p = wcsarg;
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memset(&mbs, 0, sizeof(mbs));
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for (;;) {
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clen = wcrtomb(buf, *p++, &mbs);
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if (clen == 0 || clen == (size_t)-1 ||
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nbytes + clen > (size_t)prec)
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break;
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nbytes += clen;
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}
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if (clen == (size_t)-1) {
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errno = EILSEQ;
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return NULL;
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}
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}
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}
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if ((convbuf = malloc(nbytes + 1)) == NULL)
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return NULL;
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/* Fill the output buffer. */
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p = wcsarg;
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memset(&mbs, 0, sizeof(mbs));
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if ((nbytes = wcsrtombs(convbuf, (const wchar_t **)&p,
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nbytes, &mbs)) == (size_t)-1) {
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free(convbuf);
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errno = EILSEQ;
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return NULL;
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}
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convbuf[nbytes] = '\0';
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return convbuf;
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}
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#endif
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#ifdef FLOATING_POINT
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#include <float.h>
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#include <locale.h>
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#include <math.h>
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#include "floatio.h"
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#include "gdtoa.h"
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#define DEFPREC 6
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static int exponent(char *, int, int);
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#endif /* FLOATING_POINT */
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/*
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* The size of the buffer we use as scratch space for integer
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* conversions, among other things. Technically, we would need the
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* most space for base 10 conversions with thousands' grouping
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* characters between each pair of digits. 100 bytes is a
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* conservative overestimate even for a 128-bit uintmax_t.
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*/
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#define BUF 100
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#define STATIC_ARG_TBL_SIZE 8 /* Size of static argument table. */
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/*
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* Macros for converting digits to letters and vice versa
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*/
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#define to_digit(c) ((c) - '0')
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#define is_digit(c) ((unsigned int)to_digit(c) <= 9)
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#define to_char(n) ((n) + '0')
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/*
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* Flags used during conversion.
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*/
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#define ALT 0x0001 /* alternate form */
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#define LADJUST 0x0004 /* left adjustment */
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#define LONGDBL 0x0008 /* long double */
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#define LONGINT 0x0010 /* long integer */
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#define LLONGINT 0x0020 /* long long integer */
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#define SHORTINT 0x0040 /* short integer */
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#define ZEROPAD 0x0080 /* zero (as opposed to blank) pad */
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#define FPT 0x0100 /* Floating point number */
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#define PTRINT 0x0200 /* (unsigned) ptrdiff_t */
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#define SIZEINT 0x0400 /* (signed) size_t */
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#define CHARINT 0x0800 /* 8 bit integer */
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#undef MAXINT /* Also defined by HP-UX param.h... */
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#define MAXINT 0x1000 /* largest integer size (intmax_t) */
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/*
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* Actual printf innards.
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*/
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static int
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xxxprintf(char **strp, size_t strsize, int alloc, const char *fmt0, va_list ap)
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{
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char *fmt; /* format string */
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int ch; /* character from fmt */
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int n, n2; /* handy integers (short term usage) */
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char *cp; /* handy char pointer (short term usage) */
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int flags; /* flags as above */
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int ret; /* return value accumulator */
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int width; /* width from format (%8d), or 0 */
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int prec; /* precision from format; <0 for N/A */
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char sign; /* sign prefix (' ', '+', '-', or \0) */
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#ifdef FLOATING_POINT
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/*
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* We can decompose the printed representation of floating
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* point numbers into several parts, some of which may be empty:
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*
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* [+|-| ] [0x|0X] MMM . NNN [e|E|p|P] [+|-] ZZ
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* A B ---C--- D E F
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*
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* A: 'sign' holds this value if present; '\0' otherwise
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* B: ox[1] holds the 'x' or 'X'; '\0' if not hexadecimal
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* C: cp points to the string MMMNNN. Leading and trailing
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* zeros are not in the string and must be added.
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* D: expchar holds this character; '\0' if no exponent, e.g. %f
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* F: at least two digits for decimal, at least one digit for hex
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*/
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#ifdef HAVE_NL_LANGINFO
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const char *decimal_point = NULL;
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#else
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const char *decimal_point = ".";
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#endif
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int signflag; /* true if float is negative */
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union { /* floating point arguments %[aAeEfFgG] */
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double dbl;
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long double ldbl;
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} fparg;
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int expt; /* integer value of exponent */
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char expchar; /* exponent character: [eEpP\0] */
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char *dtoaend; /* pointer to end of converted digits */
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int expsize; /* character count for expstr */
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int lead; /* sig figs before decimal or group sep */
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int ndig; /* actual number of digits returned by dtoa */
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char expstr[MAXEXPDIG+2]; /* buffer for exponent string: e+ZZZ */
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char *dtoaresult = NULL;
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#endif
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uintmax_t _umax; /* integer arguments %[diouxX] */
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enum { OCT, DEC, HEX } base; /* base for %[diouxX] conversion */
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int dprec; /* a copy of prec if %[diouxX], 0 otherwise */
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int realsz; /* field size expanded by dprec */
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int size; /* size of converted field or string */
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const char *xdigs = ""; /* digits for %[xX] conversion */
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#define NIOV 8
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char buf[BUF]; /* buffer with space for digits of uintmax_t */
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char ox[2]; /* space for 0x; ox[1] is either x, X, or \0 */
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char *str; /* pointer to string to fill */
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char *estr; /* pointer to last char in str */
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union arg *argtable; /* args, built due to positional arg */
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union arg statargtable[STATIC_ARG_TBL_SIZE];
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size_t argtablesiz;
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int nextarg; /* 1-based argument index */
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va_list orgap; /* original argument pointer */
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#ifdef PRINTF_WIDE_CHAR
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char *convbuf; /* buffer for wide to multi-byte conversion */
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#endif
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/*
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* Choose PADSIZE to trade efficiency vs. size. If larger printf
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* fields occur frequently, increase PADSIZE and make the initialisers
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* below longer.
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*/
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#define PADSIZE 16 /* pad chunk size */
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static char blanks[PADSIZE] =
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{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
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static char zeroes[PADSIZE] =
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{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
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static const char xdigs_lower[16] = "0123456789abcdef";
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static const char xdigs_upper[16] = "0123456789ABCDEF";
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/* Print chars to "str", (allocate as needed if alloc is set). */
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#define PRINT(ptr, len) do { \
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const char *p = ptr; \
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const char *endp = ptr + len; \
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while (p < endp && (str < estr || alloc)) { \
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if (alloc && str >= estr) { \
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char *t; \
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strsize = (strsize << 1) + 1; \
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if (!(t = realloc(*strp, strsize))) { \
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free(str); \
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*strp = NULL; \
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ret = -1; \
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goto done; \
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} \
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str = t + (str - *strp); \
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estr = t + strsize - 1; \
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*strp = t; \
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} \
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*str++ = *p++; \
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} \
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} while (0)
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/* BEWARE, PAD uses `n' and PRINTANDPAD uses `n2'. */
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#define PAD(plen, pstr) do { \
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if ((n = (plen)) > 0) { \
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while (n > PADSIZE) { \
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PRINT(pstr, PADSIZE); \
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n -= PADSIZE; \
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} \
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PRINT(pstr, n); \
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} \
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} while (0)
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#define PRINTANDPAD(p, ep, len, with) do { \
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n2 = (ep) - (p); \
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if (n2 > (len)) \
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n2 = (len); \
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if (n2 > 0) \
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PRINT((p), n2); \
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PAD((len) - (n2 > 0 ? n2 : 0), (with)); \
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} while(0)
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|
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/*
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* To extend shorts properly, we need both signed and unsigned
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* argument extraction methods.
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*/
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#define SARG() \
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((intmax_t)(flags&MAXINT ? GETARG(intmax_t) : \
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flags&LLONGINT ? GETARG(long long) : \
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flags&LONGINT ? GETARG(long) : \
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flags&PTRINT ? GETARG(ptrdiff_t) : \
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flags&SIZEINT ? GETARG(ssize_t) : \
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flags&SHORTINT ? (short)GETARG(int) : \
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flags&CHARINT ? (signed char)GETARG(int) : \
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GETARG(int)))
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#define UARG() \
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((uintmax_t)(flags&MAXINT ? GETARG(uintmax_t) : \
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flags&LLONGINT ? GETARG(unsigned long long) : \
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flags&LONGINT ? GETARG(unsigned long) : \
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flags&PTRINT ? (uintptr_t)GETARG(ptrdiff_t) : /* XXX */ \
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flags&SIZEINT ? GETARG(size_t) : \
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flags&SHORTINT ? (unsigned short)GETARG(int) : \
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flags&CHARINT ? (unsigned char)GETARG(int) : \
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GETARG(unsigned int)))
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|
|
|
/*
|
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* Append a digit to a value and check for overflow.
|
|
*/
|
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#define APPEND_DIGIT(val, dig) do { \
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if ((val) > INT_MAX / 10) \
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goto overflow; \
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(val) *= 10; \
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if ((val) > INT_MAX - to_digit((dig))) \
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goto overflow; \
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(val) += to_digit((dig)); \
|
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} while (0)
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|
|
|
/*
|
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* Get * arguments, including the form *nn$. Preserve the nextarg
|
|
* that the argument can be gotten once the type is determined.
|
|
*/
|
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#define GETASTER(val) \
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n2 = 0; \
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cp = fmt; \
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while (is_digit(*cp)) { \
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APPEND_DIGIT(n2, *cp); \
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cp++; \
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} \
|
|
if (*cp == '$') { \
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int hold = nextarg; \
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if (argtable == NULL) { \
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argtable = statargtable; \
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__find_arguments(fmt0, orgap, &argtable, &argtablesiz); \
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} \
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nextarg = n2; \
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val = GETARG(int); \
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nextarg = hold; \
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fmt = ++cp; \
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} else { \
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val = GETARG(int); \
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}
|
|
|
|
/*
|
|
* Get the argument indexed by nextarg. If the argument table is
|
|
* built, use it to get the argument. If its not, get the next
|
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* argument (and arguments must be gotten sequentially).
|
|
*/
|
|
#define GETARG(type) \
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|
((argtable != NULL) ? *((type*)(&argtable[nextarg++])) : \
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(nextarg++, va_arg(ap, type)))
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|
|
|
fmt = (char *)fmt0;
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argtable = NULL;
|
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nextarg = 1;
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va_copy(orgap, ap);
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ret = 0;
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|
#ifdef PRINTF_WIDE_CHAR
|
|
convbuf = NULL;
|
|
#endif
|
|
|
|
if (alloc) {
|
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strsize = 128;
|
|
*strp = str = malloc(strsize);
|
|
if (str == NULL) {
|
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ret = -1;
|
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goto done;
|
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}
|
|
estr = str + 127;
|
|
} else {
|
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str = *strp;
|
|
if (strsize)
|
|
estr = str + strsize - 1;
|
|
else
|
|
estr = NULL;
|
|
}
|
|
|
|
/*
|
|
* Scan the format for conversions (`%' character).
|
|
*/
|
|
for (;;) {
|
|
for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
|
|
/* void */;
|
|
if ((n = fmt - cp) != 0) {
|
|
if (n > INT_MAX - ret)
|
|
goto overflow;
|
|
PRINT(cp, n);
|
|
ret += n;
|
|
}
|
|
if (ch == '\0')
|
|
goto done;
|
|
fmt++; /* skip over '%' */
|
|
|
|
flags = 0;
|
|
dprec = 0;
|
|
width = 0;
|
|
prec = -1;
|
|
sign = '\0';
|
|
ox[1] = '\0';
|
|
|
|
rflag: ch = *fmt++;
|
|
reswitch: switch (ch) {
|
|
case ' ':
|
|
/*
|
|
* ``If the space and + flags both appear, the space
|
|
* flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
if (!sign)
|
|
sign = ' ';
|
|
goto rflag;
|
|
case '#':
|
|
flags |= ALT;
|
|
goto rflag;
|
|
case '\'':
|
|
/* grouping not implemented */
|
|
goto rflag;
|
|
case '*':
|
|
/*
|
|
* ``A negative field width argument is taken as a
|
|
* - flag followed by a positive field width.''
|
|
* -- ANSI X3J11
|
|
* They don't exclude field widths read from args.
|
|
*/
|
|
GETASTER(width);
|
|
if (width >= 0)
|
|
goto rflag;
|
|
if (width == INT_MIN)
|
|
goto overflow;
|
|
width = -width;
|
|
/* FALLTHROUGH */
|
|
case '-':
|
|
flags |= LADJUST;
|
|
goto rflag;
|
|
case '+':
|
|
sign = '+';
|
|
goto rflag;
|
|
case '.':
|
|
if ((ch = *fmt++) == '*') {
|
|
GETASTER(n);
|
|
prec = n < 0 ? -1 : n;
|
|
goto rflag;
|
|
}
|
|
n = 0;
|
|
while (is_digit(ch)) {
|
|
APPEND_DIGIT(n, ch);
|
|
ch = *fmt++;
|
|
}
|
|
if (ch == '$') {
|
|
nextarg = n;
|
|
if (argtable == NULL) {
|
|
argtable = statargtable;
|
|
__find_arguments(fmt0, orgap,
|
|
&argtable, &argtablesiz);
|
|
}
|
|
goto rflag;
|
|
}
|
|
prec = n;
|
|
goto reswitch;
|
|
case '0':
|
|
/*
|
|
* ``Note that 0 is taken as a flag, not as the
|
|
* beginning of a field width.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
flags |= ZEROPAD;
|
|
goto rflag;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
n = 0;
|
|
do {
|
|
APPEND_DIGIT(n, ch);
|
|
ch = *fmt++;
|
|
} while (is_digit(ch));
|
|
if (ch == '$') {
|
|
nextarg = n;
|
|
if (argtable == NULL) {
|
|
argtable = statargtable;
|
|
__find_arguments(fmt0, orgap,
|
|
&argtable, &argtablesiz);
|
|
}
|
|
goto rflag;
|
|
}
|
|
width = n;
|
|
goto reswitch;
|
|
#ifdef FLOATING_POINT
|
|
case 'L':
|
|
flags |= LONGDBL;
|
|
goto rflag;
|
|
#endif
|
|
case 'h':
|
|
if (*fmt == 'h') {
|
|
fmt++;
|
|
flags |= CHARINT;
|
|
} else {
|
|
flags |= SHORTINT;
|
|
}
|
|
goto rflag;
|
|
case 'j':
|
|
flags |= MAXINT;
|
|
goto rflag;
|
|
case 'l':
|
|
if (*fmt == 'l') {
|
|
fmt++;
|
|
flags |= LLONGINT;
|
|
} else {
|
|
flags |= LONGINT;
|
|
}
|
|
goto rflag;
|
|
case 'q':
|
|
flags |= LLONGINT;
|
|
goto rflag;
|
|
case 't':
|
|
flags |= PTRINT;
|
|
goto rflag;
|
|
case 'z':
|
|
flags |= SIZEINT;
|
|
goto rflag;
|
|
case 'c':
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
if (flags & LONGINT) {
|
|
mbstate_t mbs;
|
|
size_t mbseqlen;
|
|
|
|
memset(&mbs, 0, sizeof(mbs));
|
|
mbseqlen = wcrtomb(buf,
|
|
(wchar_t)GETARG(wint_t), &mbs);
|
|
if (mbseqlen == (size_t)-1) {
|
|
errno = EILSEQ;
|
|
goto done;
|
|
}
|
|
cp = buf;
|
|
size = (int)mbseqlen;
|
|
} else {
|
|
#endif
|
|
*(cp = buf) = GETARG(int);
|
|
size = 1;
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
}
|
|
#endif
|
|
sign = '\0';
|
|
break;
|
|
case 'D':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'd':
|
|
case 'i':
|
|
_umax = SARG();
|
|
if ((intmax_t)_umax < 0) {
|
|
_umax = -_umax;
|
|
sign = '-';
|
|
}
|
|
base = DEC;
|
|
goto number;
|
|
#ifdef FLOATING_POINT
|
|
case 'a':
|
|
case 'A':
|
|
if (ch == 'a') {
|
|
ox[1] = 'x';
|
|
xdigs = xdigs_lower;
|
|
expchar = 'p';
|
|
} else {
|
|
ox[1] = 'X';
|
|
xdigs = xdigs_upper;
|
|
expchar = 'P';
|
|
}
|
|
if (prec >= 0)
|
|
prec++;
|
|
if (dtoaresult)
|
|
__freedtoa(dtoaresult);
|
|
if (flags & LONGDBL) {
|
|
fparg.ldbl = GETARG(long double);
|
|
dtoaresult = cp =
|
|
__hldtoa(fparg.ldbl, xdigs, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
if (dtoaresult == NULL) {
|
|
errno = ENOMEM;
|
|
goto done;
|
|
}
|
|
} else {
|
|
fparg.dbl = GETARG(double);
|
|
dtoaresult = cp =
|
|
__hdtoa(fparg.dbl, xdigs, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
if (dtoaresult == NULL) {
|
|
errno = ENOMEM;
|
|
goto done;
|
|
}
|
|
}
|
|
if (prec < 0)
|
|
prec = dtoaend - cp;
|
|
if (expt == INT_MAX)
|
|
ox[1] = '\0';
|
|
goto fp_common;
|
|
case 'e':
|
|
case 'E':
|
|
expchar = ch;
|
|
if (prec < 0) /* account for digit before decpt */
|
|
prec = DEFPREC + 1;
|
|
else
|
|
prec++;
|
|
goto fp_begin;
|
|
case 'f':
|
|
case 'F':
|
|
expchar = '\0';
|
|
goto fp_begin;
|
|
case 'g':
|
|
case 'G':
|
|
expchar = ch - ('g' - 'e');
|
|
if (prec == 0)
|
|
prec = 1;
|
|
fp_begin:
|
|
if (prec < 0)
|
|
prec = DEFPREC;
|
|
if (dtoaresult)
|
|
__freedtoa(dtoaresult);
|
|
if (flags & LONGDBL) {
|
|
fparg.ldbl = GETARG(long double);
|
|
dtoaresult = cp =
|
|
__ldtoa(&fparg.ldbl, expchar ? 2 : 3, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
if (dtoaresult == NULL) {
|
|
errno = ENOMEM;
|
|
goto done;
|
|
}
|
|
} else {
|
|
fparg.dbl = GETARG(double);
|
|
dtoaresult = cp =
|
|
__dtoa(fparg.dbl, expchar ? 2 : 3, prec,
|
|
&expt, &signflag, &dtoaend);
|
|
if (dtoaresult == NULL) {
|
|
errno = ENOMEM;
|
|
goto done;
|
|
}
|
|
if (expt == 9999)
|
|
expt = INT_MAX;
|
|
}
|
|
fp_common:
|
|
if (signflag)
|
|
sign = '-';
|
|
if (expt == INT_MAX) { /* inf or nan */
|
|
if (*cp == 'N')
|
|
cp = (ch >= 'a') ? "nan" : "NAN";
|
|
else
|
|
cp = (ch >= 'a') ? "inf" : "INF";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
flags |= FPT;
|
|
ndig = dtoaend - cp;
|
|
if (ch == 'g' || ch == 'G') {
|
|
if (expt > -4 && expt <= prec) {
|
|
/* Make %[gG] smell like %[fF] */
|
|
expchar = '\0';
|
|
if (flags & ALT)
|
|
prec -= expt;
|
|
else
|
|
prec = ndig - expt;
|
|
if (prec < 0)
|
|
prec = 0;
|
|
} else {
|
|
/*
|
|
* Make %[gG] smell like %[eE], but
|
|
* trim trailing zeroes if no # flag.
|
|
*/
|
|
if (!(flags & ALT))
|
|
prec = ndig;
|
|
}
|
|
}
|
|
if (expchar) {
|
|
expsize = exponent(expstr, expt - 1, expchar);
|
|
size = expsize + prec;
|
|
if (prec > 1 || flags & ALT)
|
|
++size;
|
|
} else {
|
|
/* space for digits before decimal point */
|
|
if (expt > 0)
|
|
size = expt;
|
|
else /* "0" */
|
|
size = 1;
|
|
/* space for decimal pt and following digits */
|
|
if (prec || flags & ALT)
|
|
size += prec + 1;
|
|
lead = expt;
|
|
}
|
|
break;
|
|
#endif /* FLOATING_POINT */
|
|
#ifndef NO_PRINTF_PERCENT_N
|
|
case 'n':
|
|
if (flags & LLONGINT)
|
|
*GETARG(long long *) = ret;
|
|
else if (flags & LONGINT)
|
|
*GETARG(long *) = ret;
|
|
else if (flags & SHORTINT)
|
|
*GETARG(short *) = ret;
|
|
else if (flags & CHARINT)
|
|
*GETARG(signed char *) = ret;
|
|
else if (flags & PTRINT)
|
|
*GETARG(ptrdiff_t *) = ret;
|
|
else if (flags & SIZEINT)
|
|
*GETARG(ssize_t *) = ret;
|
|
else if (flags & MAXINT)
|
|
*GETARG(intmax_t *) = ret;
|
|
else
|
|
*GETARG(int *) = ret;
|
|
continue; /* no output */
|
|
#endif /* NO_PRINTF_PERCENT_N */
|
|
case 'O':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'o':
|
|
_umax = UARG();
|
|
base = OCT;
|
|
goto nosign;
|
|
case 'p':
|
|
/*
|
|
* ``The argument shall be a pointer to void. The
|
|
* value of the pointer is converted to a sequence
|
|
* of printable characters, in an implementation-
|
|
* defined manner.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
/* NOSTRICT */
|
|
_umax = (u_long)GETARG(void *);
|
|
base = HEX;
|
|
xdigs = xdigs_lower;
|
|
ox[1] = 'x';
|
|
goto nosign;
|
|
case 's':
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
if (flags & LONGINT) {
|
|
wchar_t *wcp;
|
|
|
|
if (convbuf != NULL) {
|
|
free(convbuf);
|
|
convbuf = NULL;
|
|
}
|
|
if ((wcp = GETARG(wchar_t *)) == NULL) {
|
|
cp = "(null)";
|
|
} else {
|
|
convbuf = __wcsconv(wcp, prec);
|
|
if (convbuf == NULL)
|
|
goto done;
|
|
cp = convbuf;
|
|
}
|
|
} else
|
|
#endif /* PRINTF_WIDE_CHAR */
|
|
if ((cp = GETARG(char *)) == NULL)
|
|
cp = "(null)";
|
|
if (prec >= 0) {
|
|
/*
|
|
* can't use strlen; can only look for the
|
|
* NUL in the first `prec' characters, and
|
|
* strlen() will go further.
|
|
*/
|
|
char *p = memchr(cp, 0, prec);
|
|
|
|
size = p ? (p - cp) : prec;
|
|
} else {
|
|
size_t len;
|
|
|
|
if ((len = strlen(cp)) > INT_MAX)
|
|
goto overflow;
|
|
size = (int)len;
|
|
}
|
|
sign = '\0';
|
|
break;
|
|
case 'U':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'u':
|
|
_umax = UARG();
|
|
base = DEC;
|
|
goto nosign;
|
|
case 'X':
|
|
xdigs = xdigs_upper;
|
|
goto hex;
|
|
case 'x':
|
|
xdigs = xdigs_lower;
|
|
hex: _umax = UARG();
|
|
base = HEX;
|
|
/* leading 0x/X only if non-zero */
|
|
if (flags & ALT && _umax != 0)
|
|
ox[1] = ch;
|
|
|
|
/* unsigned conversions */
|
|
nosign: sign = '\0';
|
|
/*
|
|
* ``... diouXx conversions ... if a precision is
|
|
* specified, the 0 flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
number: if ((dprec = prec) >= 0)
|
|
flags &= ~ZEROPAD;
|
|
|
|
/*
|
|
* ``The result of converting a zero value with an
|
|
* explicit precision of zero is no characters.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
cp = buf + BUF;
|
|
if (_umax != 0 || prec != 0) {
|
|
/*
|
|
* Unsigned mod is hard, and unsigned mod
|
|
* by a constant is easier than that by
|
|
* a variable; hence this switch.
|
|
*/
|
|
switch (base) {
|
|
case OCT:
|
|
do {
|
|
*--cp = to_char(_umax & 7);
|
|
_umax >>= 3;
|
|
} while (_umax);
|
|
/* handle octal leading 0 */
|
|
if (flags & ALT && *cp != '0')
|
|
*--cp = '0';
|
|
break;
|
|
|
|
case DEC:
|
|
/* many numbers are 1 digit */
|
|
while (_umax >= 10) {
|
|
*--cp = to_char(_umax % 10);
|
|
_umax /= 10;
|
|
}
|
|
*--cp = to_char(_umax);
|
|
break;
|
|
|
|
case HEX:
|
|
do {
|
|
*--cp = xdigs[_umax & 15];
|
|
_umax >>= 4;
|
|
} while (_umax);
|
|
break;
|
|
|
|
default:
|
|
cp = "bug in vfprintf: bad base";
|
|
size = strlen(cp);
|
|
goto skipsize;
|
|
}
|
|
}
|
|
size = buf + BUF - cp;
|
|
if (size > BUF) /* should never happen */
|
|
abort();
|
|
skipsize:
|
|
break;
|
|
default: /* "%?" prints ?, unless ? is NUL */
|
|
if (ch == '\0')
|
|
goto done;
|
|
/* pretend it was %c with argument ch */
|
|
cp = buf;
|
|
*cp = ch;
|
|
size = 1;
|
|
sign = '\0';
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* All reasonable formats wind up here. At this point, `cp'
|
|
* points to a string which (if not flags&LADJUST) should be
|
|
* padded out to `width' places. If flags&ZEROPAD, it should
|
|
* first be prefixed by any sign or other prefix; otherwise,
|
|
* it should be blank padded before the prefix is emitted.
|
|
* After any left-hand padding and prefixing, emit zeroes
|
|
* required by a decimal %[diouxX] precision, then print the
|
|
* string proper, then emit zeroes required by any leftover
|
|
* floating precision; finally, if LADJUST, pad with blanks.
|
|
*
|
|
* Compute actual size, so we know how much to pad.
|
|
* size excludes decimal prec; realsz includes it.
|
|
*/
|
|
realsz = dprec > size ? dprec : size;
|
|
if (sign)
|
|
realsz++;
|
|
if (ox[1])
|
|
realsz+= 2;
|
|
|
|
/* right-adjusting blank padding */
|
|
if ((flags & (LADJUST|ZEROPAD)) == 0)
|
|
PAD(width - realsz, blanks);
|
|
|
|
/* prefix */
|
|
if (sign)
|
|
PRINT(&sign, 1);
|
|
if (ox[1]) { /* ox[1] is either x, X, or \0 */
|
|
ox[0] = '0';
|
|
PRINT(ox, 2);
|
|
}
|
|
|
|
/* right-adjusting zero padding */
|
|
if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
|
|
PAD(width - realsz, zeroes);
|
|
|
|
/* leading zeroes from decimal precision */
|
|
PAD(dprec - size, zeroes);
|
|
|
|
/* the string or number proper */
|
|
#ifdef FLOATING_POINT
|
|
if ((flags & FPT) == 0) {
|
|
PRINT(cp, size);
|
|
} else { /* glue together f_p fragments */
|
|
#ifdef HAVE_NL_LANGINFO
|
|
if (decimal_point == NULL)
|
|
decimal_point = nl_langinfo(RADIXCHAR);
|
|
#endif
|
|
if (!expchar) { /* %[fF] or sufficiently short %[gG] */
|
|
if (expt <= 0) {
|
|
PRINT(zeroes, 1);
|
|
if (prec || flags & ALT)
|
|
PRINT(decimal_point, 1);
|
|
PAD(-expt, zeroes);
|
|
/* already handled initial 0's */
|
|
prec += expt;
|
|
} else {
|
|
PRINTANDPAD(cp, dtoaend, lead, zeroes);
|
|
cp += lead;
|
|
if (prec || flags & ALT)
|
|
PRINT(decimal_point, 1);
|
|
}
|
|
PRINTANDPAD(cp, dtoaend, prec, zeroes);
|
|
} else { /* %[eE] or sufficiently long %[gG] */
|
|
if (prec > 1 || flags & ALT) {
|
|
buf[0] = *cp++;
|
|
buf[1] = *decimal_point;
|
|
PRINT(buf, 2);
|
|
PRINT(cp, ndig-1);
|
|
PAD(prec - ndig, zeroes);
|
|
} else { /* XeYYY */
|
|
PRINT(cp, 1);
|
|
}
|
|
PRINT(expstr, expsize);
|
|
}
|
|
}
|
|
#else
|
|
PRINT(cp, size);
|
|
#endif
|
|
/* left-adjusting padding (always blank) */
|
|
if (flags & LADJUST)
|
|
PAD(width - realsz, blanks);
|
|
|
|
/* finally, adjust ret */
|
|
if (width < realsz)
|
|
width = realsz;
|
|
if (width > INT_MAX - ret)
|
|
goto overflow;
|
|
ret += width;
|
|
}
|
|
done:
|
|
va_end(orgap);
|
|
if (strsize)
|
|
*str = '\0';
|
|
goto finish;
|
|
|
|
overflow:
|
|
errno = ENOMEM;
|
|
ret = -1;
|
|
|
|
finish:
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
if (convbuf)
|
|
free(convbuf);
|
|
#endif
|
|
#ifdef FLOATING_POINT
|
|
if (dtoaresult)
|
|
__freedtoa(dtoaresult);
|
|
#endif
|
|
if (argtable != NULL && argtable != statargtable) {
|
|
mmap_free(argtable, argtablesiz);
|
|
argtable = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Type ids for argument type table.
|
|
*/
|
|
#define T_UNUSED 0
|
|
#define T_SHORT 1
|
|
#define T_U_SHORT 2
|
|
#define TP_SHORT 3
|
|
#define T_INT 4
|
|
#define T_U_INT 5
|
|
#define TP_INT 6
|
|
#define T_LONG 7
|
|
#define T_U_LONG 8
|
|
#define TP_LONG 9
|
|
#define T_LLONG 10
|
|
#define T_U_LLONG 11
|
|
#define TP_LLONG 12
|
|
#define T_DOUBLE 13
|
|
#define T_LONG_DOUBLE 14
|
|
#define TP_CHAR 15
|
|
#define TP_VOID 16
|
|
#define T_PTRINT 17
|
|
#define TP_PTRINT 18
|
|
#define T_SIZEINT 19
|
|
#define T_SSIZEINT 20
|
|
#define TP_SSIZEINT 21
|
|
#define T_MAXINT 22
|
|
#define T_MAXUINT 23
|
|
#define TP_MAXINT 24
|
|
#define T_CHAR 25
|
|
#define T_U_CHAR 26
|
|
#define T_WINT 27
|
|
#define TP_WCHAR 28
|
|
|
|
/*
|
|
* Find all arguments when a positional parameter is encountered. Returns a
|
|
* table, indexed by argument number, of pointers to each arguments. The
|
|
* initial argument table should be an array of STATIC_ARG_TBL_SIZE entries.
|
|
* It will be replaced with a mmap-ed one if it overflows (malloc cannot be
|
|
* used since we are attempting to make snprintf thread safe, and alloca is
|
|
* problematic since we have nested functions..)
|
|
*/
|
|
static int
|
|
__find_arguments(const char *fmt0, va_list ap, union arg **argtable,
|
|
size_t *argtablesiz)
|
|
{
|
|
char *fmt; /* format string */
|
|
int ch; /* character from fmt */
|
|
int n, n2; /* handy integer (short term usage) */
|
|
char *cp; /* handy char pointer (short term usage) */
|
|
int flags; /* flags as above */
|
|
unsigned char *typetable; /* table of types */
|
|
unsigned char stattypetable[STATIC_ARG_TBL_SIZE];
|
|
int tablesize; /* current size of type table */
|
|
int tablemax; /* largest used index in table */
|
|
int nextarg; /* 1-based argument index */
|
|
int ret = 0; /* return value */
|
|
|
|
/*
|
|
* Add an argument type to the table, expanding if necessary.
|
|
*/
|
|
#define ADDTYPE(type) \
|
|
((nextarg >= tablesize) ? \
|
|
__grow_type_table(&typetable, &tablesize) : 0, \
|
|
(nextarg > tablemax) ? tablemax = nextarg : 0, \
|
|
typetable[nextarg++] = type)
|
|
|
|
#define ADDSARG() \
|
|
((flags&MAXINT) ? ADDTYPE(T_MAXINT) : \
|
|
((flags&PTRINT) ? ADDTYPE(T_PTRINT) : \
|
|
((flags&SIZEINT) ? ADDTYPE(T_SSIZEINT) : \
|
|
((flags&LLONGINT) ? ADDTYPE(T_LLONG) : \
|
|
((flags&LONGINT) ? ADDTYPE(T_LONG) : \
|
|
((flags&SHORTINT) ? ADDTYPE(T_SHORT) : \
|
|
((flags&CHARINT) ? ADDTYPE(T_CHAR) : ADDTYPE(T_INT))))))))
|
|
|
|
#define ADDUARG() \
|
|
((flags&MAXINT) ? ADDTYPE(T_MAXUINT) : \
|
|
((flags&PTRINT) ? ADDTYPE(T_PTRINT) : \
|
|
((flags&SIZEINT) ? ADDTYPE(T_SIZEINT) : \
|
|
((flags&LLONGINT) ? ADDTYPE(T_U_LLONG) : \
|
|
((flags&LONGINT) ? ADDTYPE(T_U_LONG) : \
|
|
((flags&SHORTINT) ? ADDTYPE(T_U_SHORT) : \
|
|
((flags&CHARINT) ? ADDTYPE(T_U_CHAR) : ADDTYPE(T_U_INT))))))))
|
|
|
|
/*
|
|
* Add * arguments to the type array.
|
|
*/
|
|
#define ADDASTER() \
|
|
n2 = 0; \
|
|
cp = fmt; \
|
|
while (is_digit(*cp)) { \
|
|
APPEND_DIGIT(n2, *cp); \
|
|
cp++; \
|
|
} \
|
|
if (*cp == '$') { \
|
|
int hold = nextarg; \
|
|
nextarg = n2; \
|
|
ADDTYPE(T_INT); \
|
|
nextarg = hold; \
|
|
fmt = ++cp; \
|
|
} else { \
|
|
ADDTYPE(T_INT); \
|
|
}
|
|
fmt = (char *)fmt0;
|
|
typetable = stattypetable;
|
|
tablesize = STATIC_ARG_TBL_SIZE;
|
|
tablemax = 0;
|
|
nextarg = 1;
|
|
memset(typetable, T_UNUSED, STATIC_ARG_TBL_SIZE);
|
|
|
|
/*
|
|
* Scan the format for conversions (`%' character).
|
|
*/
|
|
for (;;) {
|
|
for (cp = fmt; (ch = *fmt) != '\0' && ch != '%'; fmt++)
|
|
/* void */;
|
|
fmt++; /* skip over '%' */
|
|
|
|
flags = 0;
|
|
|
|
rflag: ch = *fmt++;
|
|
reswitch: switch (ch) {
|
|
case ' ':
|
|
case '#':
|
|
case '\'':
|
|
goto rflag;
|
|
case '*':
|
|
ADDASTER();
|
|
goto rflag;
|
|
case '-':
|
|
case '+':
|
|
goto rflag;
|
|
case '.':
|
|
if ((ch = *fmt++) == '*') {
|
|
ADDASTER();
|
|
goto rflag;
|
|
}
|
|
while (is_digit(ch)) {
|
|
ch = *fmt++;
|
|
}
|
|
goto reswitch;
|
|
case '0':
|
|
goto rflag;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
n = 0;
|
|
do {
|
|
APPEND_DIGIT(n ,ch);
|
|
ch = *fmt++;
|
|
} while (is_digit(ch));
|
|
if (ch == '$') {
|
|
nextarg = n;
|
|
goto rflag;
|
|
}
|
|
goto reswitch;
|
|
#ifdef FLOATING_POINT
|
|
case 'L':
|
|
flags |= LONGDBL;
|
|
goto rflag;
|
|
#endif
|
|
case 'h':
|
|
if (*fmt == 'h') {
|
|
fmt++;
|
|
flags |= CHARINT;
|
|
} else {
|
|
flags |= SHORTINT;
|
|
}
|
|
goto rflag;
|
|
case 'j':
|
|
flags |= MAXINT;
|
|
goto rflag;
|
|
case 'l':
|
|
if (*fmt == 'l') {
|
|
fmt++;
|
|
flags |= LLONGINT;
|
|
} else {
|
|
flags |= LONGINT;
|
|
}
|
|
goto rflag;
|
|
case 'q':
|
|
flags |= LLONGINT;
|
|
goto rflag;
|
|
case 't':
|
|
flags |= PTRINT;
|
|
goto rflag;
|
|
case 'z':
|
|
flags |= SIZEINT;
|
|
goto rflag;
|
|
case 'c':
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
if (flags & LONGINT)
|
|
ADDTYPE(T_WINT);
|
|
else
|
|
#endif
|
|
ADDTYPE(T_INT);
|
|
break;
|
|
case 'D':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'd':
|
|
case 'i':
|
|
ADDSARG();
|
|
break;
|
|
#ifdef FLOATING_POINT
|
|
case 'a':
|
|
case 'A':
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'F':
|
|
case 'g':
|
|
case 'G':
|
|
if (flags & LONGDBL)
|
|
ADDTYPE(T_LONG_DOUBLE);
|
|
else
|
|
ADDTYPE(T_DOUBLE);
|
|
break;
|
|
#endif /* FLOATING_POINT */
|
|
#ifndef NO_PRINTF_PERCENT_N
|
|
case 'n':
|
|
if (flags & LLONGINT)
|
|
ADDTYPE(TP_LLONG);
|
|
else if (flags & LONGINT)
|
|
ADDTYPE(TP_LONG);
|
|
else if (flags & SHORTINT)
|
|
ADDTYPE(TP_SHORT);
|
|
else if (flags & PTRINT)
|
|
ADDTYPE(TP_PTRINT);
|
|
else if (flags & SIZEINT)
|
|
ADDTYPE(TP_SSIZEINT);
|
|
else if (flags & MAXINT)
|
|
ADDTYPE(TP_MAXINT);
|
|
else
|
|
ADDTYPE(TP_INT);
|
|
continue; /* no output */
|
|
#endif /* NO_PRINTF_PERCENT_N */
|
|
case 'O':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'o':
|
|
ADDUARG();
|
|
break;
|
|
case 'p':
|
|
ADDTYPE(TP_VOID);
|
|
break;
|
|
case 's':
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
if (flags & LONGINT)
|
|
ADDTYPE(TP_WCHAR);
|
|
else
|
|
#endif
|
|
ADDTYPE(TP_CHAR);
|
|
break;
|
|
case 'U':
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'u':
|
|
case 'X':
|
|
case 'x':
|
|
ADDUARG();
|
|
break;
|
|
default: /* "%?" prints ?, unless ? is NUL */
|
|
if (ch == '\0')
|
|
goto done;
|
|
break;
|
|
}
|
|
}
|
|
done:
|
|
/*
|
|
* Build the argument table.
|
|
*/
|
|
if (tablemax >= STATIC_ARG_TBL_SIZE) {
|
|
*argtablesiz = sizeof(union arg) * (tablemax + 1);
|
|
*argtable = mmap_alloc(*argtablesiz);
|
|
if (*argtable == NULL)
|
|
return -1;
|
|
}
|
|
|
|
for (n = 1; n <= tablemax; n++) {
|
|
switch (typetable[n]) {
|
|
case T_UNUSED:
|
|
case T_CHAR:
|
|
case T_U_CHAR:
|
|
case T_SHORT:
|
|
case T_U_SHORT:
|
|
case T_INT:
|
|
(*argtable)[n].intarg = va_arg(ap, int);
|
|
break;
|
|
case TP_SHORT:
|
|
(*argtable)[n].pshortarg = va_arg(ap, short *);
|
|
break;
|
|
case T_U_INT:
|
|
(*argtable)[n].uintarg = va_arg(ap, unsigned int);
|
|
break;
|
|
case TP_INT:
|
|
(*argtable)[n].pintarg = va_arg(ap, int *);
|
|
break;
|
|
case T_LONG:
|
|
(*argtable)[n].longarg = va_arg(ap, long);
|
|
break;
|
|
case T_U_LONG:
|
|
(*argtable)[n].ulongarg = va_arg(ap, unsigned long);
|
|
break;
|
|
case TP_LONG:
|
|
(*argtable)[n].plongarg = va_arg(ap, long *);
|
|
break;
|
|
case T_LLONG:
|
|
(*argtable)[n].longlongarg = va_arg(ap, long long);
|
|
break;
|
|
case T_U_LLONG:
|
|
(*argtable)[n].ulonglongarg = va_arg(ap, unsigned long long);
|
|
break;
|
|
case TP_LLONG:
|
|
(*argtable)[n].plonglongarg = va_arg(ap, long long *);
|
|
break;
|
|
#ifdef FLOATING_POINT
|
|
case T_DOUBLE:
|
|
(*argtable)[n].doublearg = va_arg(ap, double);
|
|
break;
|
|
case T_LONG_DOUBLE:
|
|
(*argtable)[n].longdoublearg = va_arg(ap, long double);
|
|
break;
|
|
#endif
|
|
case TP_CHAR:
|
|
(*argtable)[n].pchararg = va_arg(ap, char *);
|
|
break;
|
|
case TP_VOID:
|
|
(*argtable)[n].pvoidarg = va_arg(ap, void *);
|
|
break;
|
|
case T_PTRINT:
|
|
(*argtable)[n].ptrdiffarg = va_arg(ap, ptrdiff_t);
|
|
break;
|
|
case TP_PTRINT:
|
|
(*argtable)[n].pptrdiffarg = va_arg(ap, ptrdiff_t *);
|
|
break;
|
|
case T_SIZEINT:
|
|
(*argtable)[n].sizearg = va_arg(ap, size_t);
|
|
break;
|
|
case T_SSIZEINT:
|
|
(*argtable)[n].ssizearg = va_arg(ap, ssize_t);
|
|
break;
|
|
case TP_SSIZEINT:
|
|
(*argtable)[n].pssizearg = va_arg(ap, ssize_t *);
|
|
break;
|
|
case T_MAXINT:
|
|
(*argtable)[n].intmaxarg = va_arg(ap, intmax_t);
|
|
break;
|
|
case T_MAXUINT:
|
|
(*argtable)[n].uintmaxarg = va_arg(ap, uintmax_t);
|
|
break;
|
|
case TP_MAXINT:
|
|
(*argtable)[n].pintmaxarg = va_arg(ap, intmax_t *);
|
|
break;
|
|
#ifdef PRINTF_WIDE_CHAR
|
|
case T_WINT:
|
|
(*argtable)[n].wintarg = va_arg(ap, wint_t);
|
|
break;
|
|
case TP_WCHAR:
|
|
(*argtable)[n].pwchararg = va_arg(ap, wchar_t *);
|
|
break;
|
|
#endif
|
|
}
|
|
}
|
|
goto finish;
|
|
|
|
overflow:
|
|
errno = ENOMEM;
|
|
ret = -1;
|
|
|
|
finish:
|
|
if (typetable != NULL && typetable != stattypetable) {
|
|
mmap_free(typetable, *argtablesiz);
|
|
typetable = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Increase the size of the type table.
|
|
*/
|
|
static int
|
|
__grow_type_table(unsigned char **typetable, int *tablesize)
|
|
{
|
|
unsigned char *oldtable = *typetable;
|
|
int newsize = *tablesize * 2;
|
|
|
|
if (newsize < sysconf(_SC_PAGESIZE))
|
|
newsize = sysconf(_SC_PAGESIZE);
|
|
|
|
if (*tablesize == STATIC_ARG_TBL_SIZE) {
|
|
*typetable = mmap_alloc(newsize);
|
|
if (*typetable == NULL)
|
|
return -1;
|
|
memcpy(*typetable, oldtable, *tablesize);
|
|
} else {
|
|
unsigned char *new = mmap_alloc(newsize);
|
|
if (new == NULL)
|
|
return -1;
|
|
memmove(new, *typetable, *tablesize);
|
|
mmap_free(*typetable, *tablesize);
|
|
*typetable = new;
|
|
}
|
|
memset(*typetable + *tablesize, T_UNUSED, (newsize - *tablesize));
|
|
|
|
*tablesize = newsize;
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef FLOATING_POINT
|
|
static int
|
|
exponent(char *p0, int exp, int fmtch)
|
|
{
|
|
char *p, *t;
|
|
char expbuf[MAXEXPDIG];
|
|
|
|
p = p0;
|
|
*p++ = fmtch;
|
|
if (exp < 0) {
|
|
exp = -exp;
|
|
*p++ = '-';
|
|
} else
|
|
*p++ = '+';
|
|
t = expbuf + MAXEXPDIG;
|
|
if (exp > 9) {
|
|
do {
|
|
*--t = to_char(exp % 10);
|
|
} while ((exp /= 10) > 9);
|
|
*--t = to_char(exp);
|
|
for (; t < expbuf + MAXEXPDIG; *p++ = *t++)
|
|
/* nothing */;
|
|
} else {
|
|
/*
|
|
* Exponents for decimal floating point conversions
|
|
* (%[eEgG]) must be at least two characters long,
|
|
* whereas exponents for hexadecimal conversions can
|
|
* be only one character long.
|
|
*/
|
|
if (fmtch == 'e' || fmtch == 'E')
|
|
*p++ = '0';
|
|
*p++ = to_char(exp);
|
|
}
|
|
return p - p0;
|
|
}
|
|
#endif /* FLOATING_POINT */
|
|
|
|
#if !defined(HAVE_VSNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
|
|
int
|
|
sudo_vsnprintf(char *str, size_t n, const char *fmt, va_list ap)
|
|
{
|
|
|
|
return xxxprintf(&str, n, 0, fmt, ap);
|
|
}
|
|
#endif /* !HAVE_VSNPRINTF || PREFER_PORTABLE_SNPRINTF */
|
|
|
|
#if !defined(HAVE_SNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
|
|
int
|
|
sudo_snprintf(char *str, size_t n, char const *fmt, ...)
|
|
{
|
|
int ret;
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
ret = xxxprintf(&str, n, 0, fmt, ap);
|
|
va_end(ap);
|
|
return ret;
|
|
}
|
|
#endif /* !HAVE_SNPRINTF || PREFER_PORTABLE_SNPRINTF */
|
|
|
|
#if !defined(HAVE_VASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
|
|
int
|
|
sudo_vasprintf(char **str, const char *fmt, va_list ap)
|
|
{
|
|
int ret;
|
|
|
|
ret = xxxprintf(str, 0, 1, fmt, ap);
|
|
if (ret == -1)
|
|
*str = NULL;
|
|
return ret;
|
|
}
|
|
#endif /* !HAVE_VASPRINTF || PREFER_PORTABLE_SNPRINTF */
|
|
|
|
#if !defined(HAVE_ASPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
|
|
int
|
|
sudo_asprintf(char **str, char const *fmt, ...)
|
|
{
|
|
int ret;
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
ret = xxxprintf(str, 0, 1, fmt, ap);
|
|
va_end(ap);
|
|
if (ret == -1)
|
|
*str = NULL;
|
|
return ret;
|
|
}
|
|
#endif /* !HAVE_ASPRINTF || PREFER_PORTABLE_SNPRINTF */
|
|
|
|
#endif /* !HAVE_VSNPRINTF || !HAVE_SNPRINTF || !HAVE_VASPRINTF || !HAVE_ASPRINTF || PREFER_PORTABLE_SNPRINTF */
|