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heimdal/include/bits.c
Jeffrey Altman 4caaa7ca0b include: bits conditionalize behavior on HAVE_SNPRINTF 
ee2a92c547 ("bits: Fix warnings")
introduced unconditional use of snprintf().   Use of snprintf in
most of the tree is acceptable whenever roken is available because
roken provides snprintf() for platforms that do not provide it.
However, bits.c cannot use roken and therefore must not
unconditionally call snprintf().

This change restores the prior implementation of BITSIZE(TYPE)
when HAVE_SNPRINTF is undefined.

Change-Id: Ibbd2f003abe9f9fb612719266544cfd545809a18
2022-01-14 12:17:39 -05:00

330 lines
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/*
* Copyright (c) 1997-2002 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
RCSID("$Id$");
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#ifdef WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#ifdef HAVE_SNPRINTF
#define BITSIZE(TYPE) \
{ \
int b = 0; TYPE x = 1, zero = 0; const char *pre = "u"; \
char tmp[128]; \
while(x){ x <<= 1; b++; if(x < zero) pre=""; } \
if(b >= len){ \
size_t tabs; \
snprintf(tmp, sizeof(tmp), "typedef %s %sint%d_t;", #TYPE, \
pre, len); \
tabs = 5 - strlen(tmp) / 8; \
fprintf(f, "%s", tmp); \
while(tabs-- > 0) fprintf(f, "\t"); \
fprintf(f, "/* %2d bits */\n", b); \
return; \
} \
}
#else
#define BITSIZE(TYPE) \
{ \
int b = 0; TYPE x = 1, zero = 0; const char *pre = "u"; \
char tmp[128], tmp2[128]; \
while(x){ x <<= 1; b++; if(x < zero) pre=""; } \
if(b >= len){ \
size_t tabs; \
sprintf(tmp, "%sint%d_t" , pre, len); \
sprintf(tmp2, "typedef %s %s;", #TYPE, tmp); \
tabs = 5 - strlen(tmp2) / 8; \
fprintf(f, "%s", tmp2); \
while(tabs-- > 0) \
fprintf(f, "\t"); \
fprintf(f, "/* %2d bits */\n", b); \
return; \
} \
}
#endif
#ifndef HAVE___ATTRIBUTE__
#define __attribute__(x)
#endif
static void
try_signed(FILE *f, int len) __attribute__ ((__unused__));
static void
try_unsigned(FILE *f, int len) __attribute__ ((__unused__));
static int
print_bt(FILE *f, int flag) __attribute__ ((__unused__));
static void
try_signed(FILE *f, int len)
{
BITSIZE(signed char);
BITSIZE(short);
BITSIZE(int);
BITSIZE(long);
#ifdef HAVE_LONG_LONG
BITSIZE(long long);
#endif
fprintf(f, "/* There is no %d bit type */\n", len);
}
static void
try_unsigned(FILE *f, int len)
{
BITSIZE(unsigned char);
BITSIZE(unsigned short);
BITSIZE(unsigned int);
BITSIZE(unsigned long);
#ifdef HAVE_LONG_LONG
BITSIZE(unsigned long long);
#endif
fprintf(f, "/* There is no %d bit type */\n", len);
}
static int
print_bt(FILE *f, int flag)
{
if(flag == 0){
fprintf(f, "/* For compatibility with various type definitions */\n");
fprintf(f, "#ifndef __BIT_TYPES_DEFINED__\n");
fprintf(f, "#define __BIT_TYPES_DEFINED__\n");
fprintf(f, "\n");
}
return 1;
}
int main(int argc, char **argv)
{
FILE *f;
int flag;
char *p = NULL;
const char *hb;
if (argc > 1 && strcmp(argv[1], "--version") == 0) {
printf("some version");
return 0;
}
if(argc < 2){
hb = "__BITS_H__";
f = stdout;
} else {
p = malloc(strlen(argv[1]) + 5);
sprintf(p, "__%s__", argv[1]);
hb = p;
for(; *p; p++){
if(!isalnum((unsigned char)*p))
*p = '_';
}
f = fopen(argv[1], "w");
}
fprintf(f, "#ifndef %s\n", hb);
fprintf(f, "#define %s\n", hb);
fprintf(f, "\n");
#ifdef HAVE_INTTYPES_H
fprintf(f, "#include <inttypes.h>\n");
#endif
#ifdef HAVE_SYS_TYPES_H
fprintf(f, "#include <sys/types.h>\n");
#endif
#ifdef HAVE_SYS_BITYPES_H
fprintf(f, "#include <sys/bitypes.h>\n");
#endif
#ifdef HAVE_BIND_BITYPES_H
fprintf(f, "#include <bind/bitypes.h>\n");
#endif
#ifdef HAVE_NETINET_IN6_MACHTYPES_H
fprintf(f, "#include <netinet/in6_machtypes.h>\n");
#endif
#ifdef HAVE_SOCKLEN_T
#ifndef WIN32
fprintf(f, "#include <sys/socket.h>\n");
#else
fprintf(f, "#include <winsock2.h>\n");
fprintf(f, "#include <ws2tcpip.h>\n");
#endif
#endif
fprintf(f, "\n");
flag = 0;
#ifndef HAVE_INT8_T
flag = print_bt(f, flag);
try_signed (f, 8);
#endif /* HAVE_INT8_T */
#ifndef HAVE_INT16_T
flag = print_bt(f, flag);
try_signed (f, 16);
#endif /* HAVE_INT16_T */
#ifndef HAVE_INT32_T
flag = print_bt(f, flag);
try_signed (f, 32);
#endif /* HAVE_INT32_T */
#ifndef HAVE_INT64_T
flag = print_bt(f, flag);
try_signed (f, 64);
#endif /* HAVE_INT64_T */
#ifndef HAVE_UINT8_T
flag = print_bt(f, flag);
try_unsigned (f, 8);
#endif /* HAVE_UINT8_T */
#ifndef HAVE_UINT16_T
flag = print_bt(f, flag);
try_unsigned (f, 16);
#endif /* HAVE_UINT16_T */
#ifndef HAVE_UINT32_T
flag = print_bt(f, flag);
try_unsigned (f, 32);
#endif /* HAVE_UINT32_T */
#ifndef HAVE_UINT64_T
flag = print_bt(f, flag);
try_unsigned (f, 64);
#endif /* HAVE_UINT64_T */
#define X(S) fprintf(f, "typedef uint" #S "_t u_int" #S "_t;\n")
#ifndef HAVE_U_INT8_T
flag = print_bt(f, flag);
X(8);
#endif /* HAVE_U_INT8_T */
#ifndef HAVE_U_INT16_T
flag = print_bt(f, flag);
X(16);
#endif /* HAVE_U_INT16_T */
#ifndef HAVE_U_INT32_T
flag = print_bt(f, flag);
X(32);
#endif /* HAVE_U_INT32_T */
#ifndef HAVE_U_INT64_T
flag = print_bt(f, flag);
X(64);
#endif /* HAVE_U_INT64_T */
if(flag){
fprintf(f, "\n");
fprintf(f, "#endif /* __BIT_TYPES_DEFINED__ */\n\n");
}
#ifdef KRB5
fprintf(f, "\n");
#if defined(HAVE_SOCKLEN_T)
fprintf(f, "typedef socklen_t krb5_socklen_t;\n");
#else
fprintf(f, "typedef int krb5_socklen_t;\n");
#endif
#if defined(HAVE_SSIZE_T)
#ifdef HAVE_UNISTD_H
fprintf(f, "#include <unistd.h>\n");
#endif
fprintf(f, "typedef ssize_t krb5_ssize_t;\n");
#else
fprintf(f, "typedef int krb5_ssize_t;\n");
#endif
fprintf(f, "\n");
#if defined(_WIN32)
fprintf(f, "typedef SOCKET krb5_socket_t;\n");
#else
fprintf(f, "typedef int krb5_socket_t;\n");
#endif
fprintf(f, "\n");
#endif /* KRB5 */
fprintf(f, "#if !defined(__has_extension)\n");
fprintf(f, "#define __has_extension(x) 0\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#ifndef KRB5TYPES_REQUIRE_GNUC\n");
fprintf(f, "#define KRB5TYPES_REQUIRE_GNUC(m,n,p) \\\n");
fprintf(f, " (((__GNUC__ * 10000) + (__GNUC_MINOR__ * 100) + __GNUC_PATCHLEVEL__) >= \\\n");
fprintf(f, " (((m) * 10000) + ((n) * 100) + (p)))\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#ifndef HEIMDAL_DEPRECATED\n");
fprintf(f, "#if __has_extension(deprecated) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
fprintf(f, "#define HEIMDAL_DEPRECATED __attribute__ ((__deprecated__))\n");
fprintf(f, "#elif defined(_MSC_VER) && (_MSC_VER>1200)\n");
fprintf(f, "#define HEIMDAL_DEPRECATED __declspec(deprecated)\n");
fprintf(f, "#else\n");
fprintf(f, "#define HEIMDAL_DEPRECATED\n");
fprintf(f, "#endif\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#ifndef HEIMDAL_PRINTF_ATTRIBUTE\n");
fprintf(f, "#if __has_extension(format) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
fprintf(f, "#define HEIMDAL_PRINTF_ATTRIBUTE(x) __attribute__ ((__format__ x))\n");
fprintf(f, "#else\n");
fprintf(f, "#define HEIMDAL_PRINTF_ATTRIBUTE(x)\n");
fprintf(f, "#endif\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#ifndef HEIMDAL_NORETURN_ATTRIBUTE\n");
fprintf(f, "#if __has_extension(noreturn) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
fprintf(f, "#define HEIMDAL_NORETURN_ATTRIBUTE __attribute__ ((__noreturn__))\n");
fprintf(f, "#else\n");
fprintf(f, "#define HEIMDAL_NORETURN_ATTRIBUTE\n");
fprintf(f, "#endif\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#ifndef HEIMDAL_UNUSED_ATTRIBUTE\n");
fprintf(f, "#if __has_extension(unused) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
fprintf(f, "#define HEIMDAL_UNUSED_ATTRIBUTE __attribute__ ((__unused__))\n");
fprintf(f, "#else\n");
fprintf(f, "#define HEIMDAL_UNUSED_ATTRIBUTE\n");
fprintf(f, "#endif\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#ifndef HEIMDAL_WARN_UNUSED_RESULT_ATTRIBUTE\n");
fprintf(f, "#if __has_extension(warn_unused_result) || KRB5TYPES_REQUIRE_GNUC(3,3,0)\n");
fprintf(f, "#define HEIMDAL_WARN_UNUSED_RESULT_ATTRIBUTE __attribute__ ((__warn_unused_result__))\n");
fprintf(f, "#else\n");
fprintf(f, "#define HEIMDAL_WARN_UNUSED_RESULT_ATTRIBUTE\n");
fprintf(f, "#endif\n");
fprintf(f, "#endif\n\n");
fprintf(f, "#endif /* %s */\n", hb);
if (f != stdout)
fclose(f);
return 0;
}
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