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Comparing deliantra/server/common/porting.C (file contents):
Revision 1.3 by root, Wed Aug 30 16:30:37 2006 UTC vs.
Revision 1.10 by root, Thu Dec 14 22:45:40 2006 UTC

1/*
2 * static char *rcsid_porting_c =
3 * "$Id: porting.C,v 1.3 2006/08/30 16:30:37 root Exp $";
4 */
5
6/* 1/*
7 CrossFire, A Multiplayer game for X-windows 2 CrossFire, A Multiplayer game for X-windows
8 3
9 Copyright (C) 2002 Mark Wedel & Crossfire Development Team 4 Copyright (C) 2002 Mark Wedel & Crossfire Development Team
10 Copyright (C) 1992 Frank Tore Johansen 5 Copyright (C) 1992 Frank Tore Johansen
… …
21 16
22 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software 18 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 20
26 The authors can be reached via e-mail at crossfire-devel@real-time.com 21 The authors can be reached via e-mail at <crossfire@schmorp.de>
27*/ 22*/
28 23
29/* This file contains various functions that are not really unique for 24/* This file contains various functions that are not really unique for
30 * crossfire, but rather provides what should be standard functions 25 * crossfire, but rather provides what should be standard functions
31 * for systems that do not have them. In this way, most of the 26 * for systems that do not have them. In this way, most of the
32 * nasty system dependent stuff is contained here, with the program 27 * nasty system dependent stuff is contained here, with the program
33 * calling these functions. 28 * calling these functions.
34 */ 29 */
35 30
36 31
37#ifdef WIN32 /* ---win32 exclude/include headers */ 32/* Need to pull in the HAVE_... values somehow */
38#include "process.h" 33
39#define pid_t int /* we include it non global, because there is a redefinition in python.h */ 34#include <autoconf.h>
40#else 35
36#include <cstdio>
37#include <cstdlib>
38#include <cstdarg>
39
41#include <ctype.h> 40#include <cctype>
41
42#include <sys/stat.h> 42#include <sys/stat.h>
43#include <sys/wait.h> 43#include <sys/wait.h>
44 44
45#include <sys/param.h> 45#include <sys/param.h>
46#include <stdio.h>
47 46
48/* Need to pull in the HAVE_... values somehow */
49/* win32 reminder: always put this in a ifndef win32 block */
50#include <autoconf.h>
51#endif
52
53
54#ifdef HAVE_STDLIB_H
55#include <stdlib.h>
56#endif
57
58#ifdef HAVE_UNISTD_H
59#include <unistd.h> 47#include <unistd.h>
60#endif
61 48
62#include <stdarg.h>
63/* Has to be after above includes so we don't redefine some values */ 49/* Has to be after above includes so we don't redefine some values */
64#include "global.h" 50#include "global.h"
65 51
66static unsigned int curtmp = 0; 52static unsigned int curtmp = 0;
67 53
68/*****************************************************************************
69 * File related functions
70 ****************************************************************************/
71
72/*
73 * A replacement for the tempnam() function since it's not defined
74 * at some unix variants.
75 */
76
77char *tempnam_local(const char *dir, const char *pfx)
78{
79 char *name;
80 pid_t pid=getpid();
81
82/* HURD does not have a hard limit, but we do */
83#ifndef MAXPATHLEN
84#define MAXPATHLEN 4096
85#endif
86
87 if (!(name = (char *) malloc(MAXPATHLEN)))
88 return(NULL);
89
90 if (!pfx)
91 pfx = "cftmp.";
92
93 /* This is a pretty simple method - put the pid as a hex digit and
94 * just keep incrementing the last digit. Check to see if the file
95 * already exists - if so, we'll just keep looking - eventually we should
96 * find one that is free.
97 */
98 if (dir!=NULL) {
99 do {
100#ifdef HAVE_SNPRINTF
101 (void)snprintf(name, MAXPATHLEN, "%s/%s%hx.%d", dir, pfx, pid, curtmp);
102#else
103 (void)sprintf(name,"%s/%s%hx%d", dir, pfx, pid, curtmp);
104#endif
105 curtmp++;
106 } while (access(name, F_OK)!=-1);
107 return(name);
108 }
109 return(NULL);
110}
111
112
113
114/* This function removes everything in the directory. */ 54/* This function removes everything in the directory. */
55void
115void remove_directory(const char *path) 56remove_directory (const char *path)
116{ 57{
117 DIR *dirp; 58 DIR *dirp;
118 char buf[MAX_BUF]; 59 char buf[MAX_BUF];
119 struct stat statbuf; 60 struct stat statbuf;
120 int status; 61 int status;
121 62
122 if ((dirp=opendir(path))!=NULL) { 63 if ((dirp = opendir (path)) != NULL)
64 {
123 struct dirent *de; 65 struct dirent *de;
124 66
125 for (de=readdir(dirp); de; de = readdir(dirp)) { 67 for (de = readdir (dirp); de; de = readdir (dirp))
68 {
126 /* Don't remove '.' or '..' In theory we should do a better 69 /* Don't remove '.' or '..' In theory we should do a better
127 * check for .., but the directories we are removing are fairly 70 * check for .., but the directories we are removing are fairly
128 * limited and should not have dot files in them. 71 * limited and should not have dot files in them.
129 */ 72 */
130 if (de->d_name[0] == '.') continue; 73 if (de->d_name[0] == '.')
74 continue;
131 75
132 /* Linux actually has a type field in the dirent structure, 76 /* Linux actually has a type field in the dirent structure,
133 * but that is not portable - stat should be portable 77 * but that is not portable - stat should be portable
134 */ 78 */
135 status=stat(de->d_name, &statbuf); 79 status = stat (de->d_name, &statbuf);
136 if ((status!=-1) && (S_ISDIR(statbuf.st_mode))) { 80 if ((status != -1) && (S_ISDIR (statbuf.st_mode)))
81 {
137 sprintf(buf,"%s/%s", path, de->d_name); 82 sprintf (buf, "%s/%s", path, de->d_name);
138 remove_directory(buf); 83 remove_directory (buf);
139 continue; 84 continue;
140 } 85 }
141 sprintf(buf,"%s/%s", path, de->d_name); 86 sprintf (buf, "%s/%s", path, de->d_name);
142 if (unlink(buf)) { 87 if (unlink (buf))
88 {
143 LOG(llevError,"Unable to remove directory %s\n", path); 89 LOG (llevError, "Unable to remove directory %s\n", path);
144 } 90 }
145 } 91 }
146 closedir(dirp); 92 closedir (dirp);
147 } 93 }
148 if (rmdir(path)) { 94 if (rmdir (path))
95 {
149 LOG(llevError,"Unable to remove directory %s\n", path); 96 LOG (llevError, "Unable to remove directory %s\n", path);
150 } 97 }
151} 98}
152
153#if defined(sgi)
154
155#include <stdio.h>
156#include <stdlib.h>
157#include <string.h>
158
159#define popen fixed_popen
160
161FILE *popen_local(const char *command, const char *type)
162{
163 int fd[2];
164 int pd;
165 FILE *ret;
166 if (!strcmp(type,"r"))
167 {
168 pd=STDOUT_FILENO;
169 }
170 else if (!strcmp(type,"w"))
171 {
172 pd=STDIN_FILENO;
173 }
174 else
175 {
176 return NULL;
177 }
178 if (pipe(fd)!=-1)
179 {
180 switch (fork())
181 {
182 case -1:
183 close(fd[0]);
184 close(fd[1]);
185 break;
186 case 0:
187 close(fd[0]);
188 if ((fd[1]==pd)||(dup2(fd[1],pd)==pd))
189 {
190 if (fd[1]!=pd)
191 {
192 close(fd[1]);
193 }
194 execl("/bin/sh","sh","-c",command,NULL);
195 close(pd);
196 }
197 exit(1);
198 break;
199 default:
200 close(fd[1]);
201 if (ret=fdopen(fd[0],type))
202 {
203 return ret;
204 }
205 close(fd[0]);
206 break;
207 }
208 }
209 return NULL;
210}
211
212#endif /* defined(sgi) */
213
214
215/*****************************************************************************
216 * String related function
217 ****************************************************************************/
218
219
220
221/*
222 * A replacement of strdup(), since it's not defined at some
223 * unix variants.
224 */
225char *strdup_local(const char *str) {
226 char *c=(char *)malloc(sizeof(char)*(strlen(str)+1));
227 strcpy(c,str);
228 return c;
229}
230
231 99
232#define DIGIT(x) (isdigit(x) ? (x) - '0' : \ 100#define DIGIT(x) (isdigit(x) ? (x) - '0' : \
233islower (x) ? (x) + 10 - 'a' : (x) + 10 - 'A') 101islower (x) ? (x) + 10 - 'a' : (x) + 10 - 'A')
234#define MBASE ('z' - 'a' + 1 + 10) 102#define MBASE ('z' - 'a' + 1 + 10)
235 103
236/* This seems to be lacking on some system */ 104char *
237#if !defined(HAVE_STRNCASECMP)
238int strncasecmp(const char *s1, const char *s2, int n)
239{
240 register int c1, c2;
241
242 while (*s1 && *s2 && n) {
243 c1 = tolower(*s1);
244 c2 = tolower(*s2);
245 if (c1 != c2)
246 return (c1 - c2);
247 s1++;
248 s2++;
249 n--;
250 }
251 if (!n)
252 return(0);
253 return (int) (*s1 - *s2);
254}
255#endif
256
257#if !defined(HAVE_STRCASECMP)
258int strcasecmp(const char *s1, const char*s2)
259{
260 register int c1, c2;
261
262 while (*s1 && *s2) {
263 c1 = tolower(*s1);
264 c2 = tolower(*s2);
265 if (c1 != c2)
266 return (c1 - c2);
267 s1++;
268 s2++;
269 }
270 if (*s1=='\0' && *s2=='\0')
271 return 0;
272 return (int) (*s1 - *s2);
273}
274#endif
275
276char *strcasestr_local(const char *s, const char *find) 105strcasestr_local (const char *s, const char *find)
277{ 106{
278 char c, sc; 107 char c, sc;
279 size_t len; 108 size_t len;
280 109
281 if ((c = *find++) != 0) { 110 if ((c = *find++) != 0)
111 {
282 c = tolower(c); 112 c = tolower (c);
283 len = strlen(find); 113 len = strlen (find);
114 do
284 do { 115 {
116 do
285 do { 117 {
286 if ((sc = *s++) == 0) 118 if ((sc = *s++) == 0)
287 return NULL; 119 return NULL;
120 }
288 } while (tolower(sc) != c); 121 while (tolower (sc) != c);
122 }
289 } while (strncasecmp(s, find, len) != 0); 123 while (strncasecmp (s, find, len) != 0);
290 s--; 124 s--;
291 } 125 }
292 return (char *)s; 126 return (char *) s;
293} 127}
294
295#if !defined(HAVE_SNPRINTF)
296
297int snprintf(char *dest, int max, const char *format, ...)
298{
299 va_list var;
300 int ret;
301
302 va_start(var, format);
303 ret = vsprintf(dest, format, var);
304 va_end(var);
305 if (ret > max) abort();
306
307 return ret;
308}
309#endif
310
311 128
312/* 129/*
313 * Based on (n+1)^2 = n^2 + 2n + 1 130 * Based on (n+1)^2 = n^2 + 2n + 1
314 * given that 1^2 = 1, then 131 * given that 1^2 = 1, then
315 * 2^2 = 1 + (2 + 1) = 1 + 3 = 4 132 * 2^2 = 1 + (2 + 1) = 1 + 3 = 4
… …
318 * ... 135 * ...
319 * In other words, a square number can be express as the sum of the 136 * In other words, a square number can be express as the sum of the
320 * series n^2 = 1 + 3 + ... + (2n-1) 137 * series n^2 = 1 + 3 + ... + (2n-1)
321 */ 138 */
322int 139int
323isqrt(int n) 140isqrt (int n)
324{ 141{
325 int result, sum, prev; 142 int result, sum, prev;
143
326 result = 0; 144 result = 0;
327 prev = sum = 1; 145 prev = sum = 1;
328 while (sum <= n) { 146 while (sum <= n)
147 {
329 prev += 2; 148 prev += 2;
330 sum += prev; 149 sum += prev;
331 ++result; 150 ++result;
332 } 151 }
333 return result; 152 return result;
334} 153}
335
336 154
337/* 155/*
338 * returns a char-pointer to a static array, in which a representation 156 * returns a char-pointer to a static array, in which a representation
339 * of the decimal number given will be stored. 157 * of the decimal number given will be stored.
340 */ 158 */
341 159char *
342char *ltostr10(signed long n) { 160ltostr10 (signed long n)
161{
343 static char buf[12]; /* maximum size is n=-2 billion, i.e. 11 characters+1 162 static char buf[12]; /* maximum size is n=-2 billion, i.e. 11 characters+1
344 character for the trailing nul character */ 163 character for the trailing nul character */
345 snprintf(buf, sizeof(buf), "%ld", n); 164 snprintf (buf, sizeof (buf), "%ld", n);
346 return buf; 165 return buf;
347} 166}
167
168char *
348char *doubletostr10(double v){ 169doubletostr10 (double v)
170{
349 static char tbuf[200]; 171 static char tbuf[200];
172
350 sprintf(tbuf,"%f",v); 173 sprintf (tbuf, "%f", v);
351 return tbuf; 174 return tbuf;
352}
353
354/**
355 * Open and possibly uncompress a file.
356 *
357 * @param ext the extension if the file is compressed.
358 *
359 * @param uncompressor the command to uncompress the file if the file is
360 * compressed.
361 *
362 * @param name the base file name without compression extension
363 *
364 * @param flag only used for compressed files: if set, uncompress and open the
365 * file; if unset, uncompress the file via pipe
366 *
367 * @param *compressed set to zero if the file was uncompressed
368 */
369static FILE *open_and_uncompress_file(const char *ext, const char *uncompressor, const char *name, int flag, int *compressed) {
370 struct stat st;
371 char buf[MAX_BUF];
372 char buf2[MAX_BUF];
373 int ret;
374
375 if (ext == NULL) {
376 ext = "";
377 }
378
379 if (strlen(name)+strlen(ext) >= sizeof(buf)) {
380 errno = ENAMETOOLONG; /* File name too long */
381 return NULL;
382 }
383 sprintf(buf, "%s%s", name, ext);
384
385 if (stat(buf, &st) != 0) {
386 return NULL;
387 }
388
389 if (!S_ISREG(st.st_mode)) {
390 errno = EISDIR; /* Not a regular file */
391 return NULL;
392 }
393
394 if (uncompressor == NULL) {
395 /* open without uncompression */
396
397 return fopen(buf, "r");
398 }
399
400 /* The file name buf (and its substring name) is passed as an argument to a
401 * shell command, therefore check for characters that could confuse the
402 * shell.
403 */
404 if (strpbrk(buf, "'\\\r\n") != NULL) {
405 errno = ENOENT; /* Pretend the file does not exist */
406 return NULL;
407 }
408
409 if (!flag) {
410 /* uncompress via pipe */
411
412 if (strlen(uncompressor)+4+strlen(buf)+1 >= sizeof(buf2)) {
413 errno = ENAMETOOLONG; /* File name too long */
414 return NULL;
415 }
416 sprintf(buf2, "%s < '%s'", uncompressor, buf);
417
418 return popen(buf2, "r");
419 }
420
421 /* remove compression from file, then open file */
422
423 if (stat(name, &st) == 0 && !S_ISREG(st.st_mode)) {
424 errno = EISDIR;
425 return NULL;
426 }
427
428 if (strlen(uncompressor)+4+strlen(buf)+5+strlen(name)+1 >= sizeof(buf2)) {
429 errno = ENAMETOOLONG; /* File name too long */
430 return NULL;
431 }
432 sprintf(buf2, "%s < '%s' > '%s'", uncompressor, buf, name);
433
434 ret = system(buf2);
435 if (!WIFEXITED(ret) || WEXITSTATUS(ret) != 0) {
436 LOG(llevError, "system(%s) returned %d\n", buf2, ret);
437 errno = ENOENT;
438 return NULL;
439 }
440
441 unlink(buf); /* Delete the original */
442 *compressed = 0; /* Change to "uncompressed file" */
443 chmod(name, st.st_mode); /* Copy access mode from compressed file */
444
445 return fopen(name, "r");
446} 175}
447 176
448/** 177/**
449 * open_and_uncompress() first searches for the original filename. If it exist, 178 * open_and_uncompress() first searches for the original filename. If it exist,
450 * then it opens it and returns the file-pointer. 179 * then it opens it and returns the file-pointer.
451 * 180 */
452 * If not, it does two things depending on the flag. If the flag is set, it 181FILE *
453 * tries to create the original file by appending a compression suffix to name
454 * and uncompressing it. If the flag is not set, it creates a pipe that is used
455 * for reading the file (NOTE - you can not use fseek on pipes).
456 *
457 * The compressed pointer is set to nonzero if the file is compressed (and
458 * thus, fp is actually a pipe.) It returns 0 if it is a normal file.
459 */
460FILE *open_and_uncompress(const char *name, int flag, int *compressed) { 182open_and_uncompress (const char *name, int flag, int *compressed)
461 size_t i; 183{
462 FILE *fp; 184 *compressed = 0;
185 return fopen (name, "r");
186}
463 187
464 fp = open_and_uncompress_file(0,0, name, flag, compressed); 188/*
465 if (fp != NULL) { 189 * See open_and_uncompress().
190 */
191
192void
193close_and_delete (FILE * fp, int compressed)
194{
195 fclose (fp);
196}
197
198/*
199 * If any directories in the given path doesn't exist, they are created.
200 */
201
202void
203make_path_to_file (char *filename)
204{
205 char buf[MAX_BUF], *cp = buf;
206 struct stat statbuf;
207
208 if (!filename || !*filename)
209 return;
210 strcpy (buf, filename);
211
212 while ((cp = strchr (cp + 1, (int) '/')))
213 {
214 *cp = '\0';
215 if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode))
216 {
217 if (mkdir (buf, SAVE_DIR_MODE))
218 {
219 LOG (llevError, "Cannot mkdir %s: %s\n", buf, strerror (errno));
466 return fp; 220 return;
221 }
467 } 222 }
468
469 errno = ENOENT;
470 return NULL;
471}
472
473/*
474 * See open_and_uncompress().
475 */
476
477void close_and_delete(FILE *fp, int compressed) {
478 if (compressed)
479 pclose(fp);
480 else
481 fclose(fp);
482}
483
484/*
485 * If any directories in the given path doesn't exist, they are created.
486 */
487
488void make_path_to_file (char *filename)
489{
490 char buf[MAX_BUF], *cp = buf;
491 struct stat statbuf;
492
493 if (!filename || !*filename)
494 return;
495 strcpy (buf, filename);
496
497 while ((cp = strchr (cp + 1, (int) '/'))) {
498 *cp = '\0';
499 if (stat(buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) {
500 if (mkdir (buf, SAVE_DIR_MODE)) {
501 LOG(llevError, "Cannot mkdir %s: %s\n", buf, strerror(errno));
502 return;
503 }
504 }
505 *cp = '/'; 223 *cp = '/';
506 } 224 }
507} 225}
508

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