1 /* $NetBSD: bits.c,v 1.4 2023/06/19 21:41:41 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997-2002 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Portions Copyright (c) 2010 Apple Inc. All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 *
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * 3. Neither the name of the Institute nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38 #ifdef HAVE_CONFIG_H
39 #include <config.h>
40 __RCSID("$NetBSD: bits.c,v 1.4 2023/06/19 21:41:41 christos Exp $");
41 #endif
42 #include <stdio.h>
43 #include <string.h>
44 #include <stdlib.h>
45 #include <ctype.h>
46 #ifdef WIN32
47 #include <winsock2.h>
48 #include <ws2tcpip.h>
49 #endif
50
51 #define BITSIZE(TYPE) \
52 { \
53 int b = 0; TYPE x = 1, zero = 0; const char *pre = "u"; \
54 char tmp[128], tmp2[192]; \
55 while(x){ x <<= 1; b++; if(x < zero) pre=""; } \
56 if(b >= len){ \
57 size_t tabs; \
58 sprintf(tmp, "%sint%d_t" , pre, len); \
59 sprintf(tmp2, "typedef %s %s;", #TYPE, tmp); \
60 tabs = 5 - strlen(tmp2) / 8; \
61 fprintf(f, "%s", tmp2); \
62 while(tabs-- > 0) fprintf(f, "\t"); \
63 fprintf(f, "/* %2d bits */\n", b); \
64 return; \
65 } \
66 }
67
68 #ifndef HAVE___ATTRIBUTE__
69 #define __attribute__(x)
70 #endif
71
72 static void
73 try_signed(FILE *f, int len) __attribute__ ((__unused__));
74
75 static void
76 try_unsigned(FILE *f, int len) __attribute__ ((__unused__));
77
78 static int
79 print_bt(FILE *f, int flag) __attribute__ ((__unused__));
80
81 static void
try_signed(FILE * f,int len)82 try_signed(FILE *f, int len)
83 {
84 BITSIZE(signed char);
85 BITSIZE(short);
86 BITSIZE(int);
87 BITSIZE(long);
88 #ifdef HAVE_LONG_LONG
89 BITSIZE(long long);
90 #endif
91 fprintf(f, "/* There is no %d bit type */\n", len);
92 }
93
94 static void
try_unsigned(FILE * f,int len)95 try_unsigned(FILE *f, int len)
96 {
97 BITSIZE(unsigned char);
98 BITSIZE(unsigned short);
99 BITSIZE(unsigned int);
100 BITSIZE(unsigned long);
101 #ifdef HAVE_LONG_LONG
102 BITSIZE(unsigned long long);
103 #endif
104 fprintf(f, "/* There is no %d bit type */\n", len);
105 }
106
107 static int
print_bt(FILE * f,int flag)108 print_bt(FILE *f, int flag)
109 {
110 if(flag == 0){
111 fprintf(f, "/* For compatibility with various type definitions */\n");
112 fprintf(f, "#ifndef __BIT_TYPES_DEFINED__\n");
113 fprintf(f, "#define __BIT_TYPES_DEFINED__\n");
114 fprintf(f, "\n");
115 }
116 return 1;
117 }
118
main(int argc,char ** argv)119 int main(int argc, char **argv)
120 {
121 FILE *f;
122 int flag;
123 char *p = NULL;
124 const char *hb;
125
126 if (argc > 1 && strcmp(argv[1], "--version") == 0) {
127 printf("some version");
128 return 0;
129 }
130
131 if(argc < 2){
132 hb = "__BITS_H__";
133 f = stdout;
134 } else {
135 p = malloc(strlen(argv[1]) + 5);
136 sprintf(p, "__%s__", argv[1]);
137 hb = p;
138 for(; *p; p++){
139 if(!isalnum((unsigned char)*p))
140 *p = '_';
141 }
142 f = fopen(argv[1], "w");
143 }
144 fprintf(f, "#ifndef %s\n", hb);
145 fprintf(f, "#define %s\n", hb);
146 fprintf(f, "\n");
147 #ifdef HAVE_INTTYPES_H
148 fprintf(f, "#include <inttypes.h>\n");
149 #endif
150 #ifdef HAVE_SYS_TYPES_H
151 fprintf(f, "#include <sys/types.h>\n");
152 #endif
153 #ifdef HAVE_SYS_BITYPES_H
154 fprintf(f, "#include <sys/bitypes.h>\n");
155 #endif
156 #ifdef HAVE_BIND_BITYPES_H
157 fprintf(f, "#include <bind/bitypes.h>\n");
158 #endif
159 #ifdef HAVE_NETINET_IN6_MACHTYPES_H
160 fprintf(f, "#include <netinet/in6_machtypes.h>\n");
161 #endif
162 #ifdef HAVE_SOCKLEN_T
163 #ifndef WIN32
164 fprintf(f, "#include <sys/socket.h>\n");
165 #else
166 fprintf(f, "#include <winsock2.h>\n");
167 fprintf(f, "#include <ws2tcpip.h>\n");
168 #endif
169 #endif
170 fprintf(f, "\n");
171
172 flag = 0;
173 #ifndef HAVE_INT8_T
174 flag = print_bt(f, flag);
175 try_signed (f, 8);
176 #endif /* HAVE_INT8_T */
177 #ifndef HAVE_INT16_T
178 flag = print_bt(f, flag);
179 try_signed (f, 16);
180 #endif /* HAVE_INT16_T */
181 #ifndef HAVE_INT32_T
182 flag = print_bt(f, flag);
183 try_signed (f, 32);
184 #endif /* HAVE_INT32_T */
185 #ifndef HAVE_INT64_T
186 flag = print_bt(f, flag);
187 try_signed (f, 64);
188 #endif /* HAVE_INT64_T */
189
190 #ifndef HAVE_UINT8_T
191 flag = print_bt(f, flag);
192 try_unsigned (f, 8);
193 #endif /* HAVE_UINT8_T */
194 #ifndef HAVE_UINT16_T
195 flag = print_bt(f, flag);
196 try_unsigned (f, 16);
197 #endif /* HAVE_UINT16_T */
198 #ifndef HAVE_UINT32_T
199 flag = print_bt(f, flag);
200 try_unsigned (f, 32);
201 #endif /* HAVE_UINT32_T */
202 #ifndef HAVE_UINT64_T
203 flag = print_bt(f, flag);
204 try_unsigned (f, 64);
205 #endif /* HAVE_UINT64_T */
206
207 #define X(S) fprintf(f, "typedef uint" #S "_t u_int" #S "_t;\n")
208 #ifndef HAVE_U_INT8_T
209 flag = print_bt(f, flag);
210 X(8);
211 #endif /* HAVE_U_INT8_T */
212 #ifndef HAVE_U_INT16_T
213 flag = print_bt(f, flag);
214 X(16);
215 #endif /* HAVE_U_INT16_T */
216 #ifndef HAVE_U_INT32_T
217 flag = print_bt(f, flag);
218 X(32);
219 #endif /* HAVE_U_INT32_T */
220 #ifndef HAVE_U_INT64_T
221 flag = print_bt(f, flag);
222 X(64);
223 #endif /* HAVE_U_INT64_T */
224
225 if(flag){
226 fprintf(f, "\n");
227 fprintf(f, "#endif /* __BIT_TYPES_DEFINED__ */\n\n");
228 }
229 #ifdef KRB5
230 fprintf(f, "\n");
231 #if defined(HAVE_SOCKLEN_T)
232 fprintf(f, "typedef socklen_t krb5_socklen_t;\n");
233 #else
234 fprintf(f, "typedef int krb5_socklen_t;\n");
235 #endif
236 #if defined(HAVE_SSIZE_T)
237 #ifdef HAVE_UNISTD_H
238 fprintf(f, "#include <unistd.h>\n");
239 #endif
240 fprintf(f, "typedef ssize_t krb5_ssize_t;\n");
241 #else
242 fprintf(f, "typedef int krb5_ssize_t;\n");
243 #endif
244 fprintf(f, "\n");
245
246 #if defined(_WIN32)
247 fprintf(f, "typedef SOCKET krb5_socket_t;\n");
248 #else
249 fprintf(f, "typedef int krb5_socket_t;\n");
250 #endif
251 fprintf(f, "\n");
252
253 #endif /* KRB5 */
254
255 fprintf(f, "#if !defined(__has_extension)\n");
256 fprintf(f, "#define __has_extension(x) 0\n");
257 fprintf(f, "#endif\n\n");
258
259 fprintf(f, "#ifndef KRB5TYPES_REQUIRE_GNUC\n");
260 fprintf(f, "#define KRB5TYPES_REQUIRE_GNUC(m,n,p) \\\n");
261 fprintf(f, " (((__GNUC__ * 10000) + (__GNUC_MINOR__ * 100) + __GNUC_PATCHLEVEL__) >= \\\n");
262 fprintf(f, " (((m) * 10000) + ((n) * 100) + (p)))\n");
263 fprintf(f, "#endif\n\n");
264
265 fprintf(f, "#ifndef HEIMDAL_DEPRECATED\n");
266 fprintf(f, "#if __has_extension(deprecated) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
267 fprintf(f, "#define HEIMDAL_DEPRECATED __attribute__ ((__deprecated__))\n");
268 fprintf(f, "#elif defined(_MSC_VER) && (_MSC_VER>1200)\n");
269 fprintf(f, "#define HEIMDAL_DEPRECATED __declspec(deprecated)\n");
270 fprintf(f, "#else\n");
271 fprintf(f, "#define HEIMDAL_DEPRECATED\n");
272 fprintf(f, "#endif\n");
273 fprintf(f, "#endif\n\n");
274
275 fprintf(f, "#ifndef HEIMDAL_PRINTF_ATTRIBUTE\n");
276 fprintf(f, "#if __has_extension(format) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
277 fprintf(f, "#define HEIMDAL_PRINTF_ATTRIBUTE(x) __attribute__ ((__format__ x))\n");
278 fprintf(f, "#else\n");
279 fprintf(f, "#define HEIMDAL_PRINTF_ATTRIBUTE(x)\n");
280 fprintf(f, "#endif\n");
281 fprintf(f, "#endif\n\n");
282
283 fprintf(f, "#ifndef HEIMDAL_NORETURN_ATTRIBUTE\n");
284 fprintf(f, "#if __has_extension(noreturn) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
285 fprintf(f, "#define HEIMDAL_NORETURN_ATTRIBUTE __attribute__ ((__noreturn__))\n");
286 fprintf(f, "#else\n");
287 fprintf(f, "#define HEIMDAL_NORETURN_ATTRIBUTE\n");
288 fprintf(f, "#endif\n");
289 fprintf(f, "#endif\n\n");
290
291 fprintf(f, "#ifndef HEIMDAL_UNUSED_ATTRIBUTE\n");
292 fprintf(f, "#if __has_extension(unused) || KRB5TYPES_REQUIRE_GNUC(3,1,0)\n");
293 fprintf(f, "#define HEIMDAL_UNUSED_ATTRIBUTE __attribute__ ((__unused__))\n");
294 fprintf(f, "#else\n");
295 fprintf(f, "#define HEIMDAL_UNUSED_ATTRIBUTE\n");
296 fprintf(f, "#endif\n");
297 fprintf(f, "#endif\n\n");
298
299 fprintf(f, "#ifndef HEIMDAL_WARN_UNUSED_RESULT_ATTRIBUTE\n");
300 fprintf(f, "#if __has_extension(warn_unused_result) || KRB5TYPES_REQUIRE_GNUC(3,3,0)\n");
301 fprintf(f, "#define HEIMDAL_WARN_UNUSED_RESULT_ATTRIBUTE __attribute__ ((__warn_unused_result__))\n");
302 fprintf(f, "#else\n");
303 fprintf(f, "#define HEIMDAL_WARN_UNUSED_RESULT_ATTRIBUTE\n");
304 fprintf(f, "#endif\n");
305 fprintf(f, "#endif\n\n");
306
307 fprintf(f, "#endif /* %s */\n", hb);
308
309 if (f != stdout)
310 fclose(f);
311 return 0;
312 }
313