1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game for X-windows |
3 | |
3 | * |
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4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | * Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (C) 1992 Frank Tore Johansen |
6 | |
7 | * |
7 | This program is free software; you can redistribute it and/or modify |
8 | * This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. |
11 | * (at your option) any later version. |
11 | |
12 | * |
12 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
16 | |
17 | * |
17 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | * along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | |
21 | * |
21 | The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | * The authors can be reached via e-mail at <crossfire@schmorp.de> |
22 | */ |
23 | */ |
23 | |
24 | |
24 | /* This file contains various functions that are not really unique for |
25 | /* This file contains various functions that are not really unique for |
25 | * crossfire, but rather provides what should be standard functions |
26 | * crossfire, but rather provides what should be standard functions |
26 | * for systems that do not have them. In this way, most of the |
27 | * for systems that do not have them. In this way, most of the |
27 | * nasty system dependent stuff is contained here, with the program |
28 | * nasty system dependent stuff is contained here, with the program |
28 | * calling these functions. |
29 | * calling these functions. |
29 | */ |
30 | */ |
30 | |
31 | |
31 | |
32 | |
32 | #ifdef WIN32 /* ---win32 exclude/include headers */ |
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33 | # include "process.h" |
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34 | # define pid_t int /* we include it non global, because there is a redefinition in python.h */ |
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35 | #else |
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36 | # include <ctype.h> |
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37 | # include <sys/stat.h> |
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38 | # include <sys/wait.h> |
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39 | |
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40 | # include <sys/param.h> |
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41 | # include <stdio.h> |
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42 | |
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43 | /* Need to pull in the HAVE_... values somehow */ |
33 | /* Need to pull in the HAVE_... values somehow */ |
44 | |
34 | |
45 | /* win32 reminder: always put this in a ifndef win32 block */ |
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46 | # include <autoconf.h> |
35 | #include <autoconf.h> |
47 | #endif |
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48 | |
36 | |
49 | |
37 | #include <cstdio> |
50 | #ifdef HAVE_STDLIB_H |
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51 | # include <stdlib.h> |
38 | #include <cstdlib> |
52 | #endif |
39 | #include <cstdarg> |
53 | |
40 | |
54 | #ifdef HAVE_UNISTD_H |
41 | #include <cctype> |
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42 | |
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43 | #include <sys/stat.h> |
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44 | #include <sys/wait.h> |
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45 | |
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46 | #include <sys/param.h> |
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47 | |
55 | # include <unistd.h> |
48 | #include <unistd.h> |
56 | #endif |
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57 | |
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58 | #include <stdarg.h> |
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59 | |
49 | |
60 | /* Has to be after above includes so we don't redefine some values */ |
50 | /* Has to be after above includes so we don't redefine some values */ |
61 | #include "global.h" |
51 | #include "global.h" |
62 | |
52 | |
63 | static unsigned int curtmp = 0; |
53 | static unsigned int curtmp = 0; |
64 | |
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65 | /***************************************************************************** |
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66 | * File related functions |
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67 | ****************************************************************************/ |
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68 | |
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69 | /* |
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70 | * A replacement for the tempnam() function since it's not defined |
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71 | * at some unix variants. |
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72 | */ |
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73 | |
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74 | char * |
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75 | tempnam_local (const char *dir, const char *pfx) |
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76 | { |
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77 | char *name; |
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78 | pid_t pid = getpid (); |
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79 | |
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80 | /* HURD does not have a hard limit, but we do */ |
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81 | #ifndef MAXPATHLEN |
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82 | # define MAXPATHLEN 4096 |
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83 | #endif |
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84 | |
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85 | if (!(name = (char *) malloc (MAXPATHLEN))) |
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86 | return (NULL); |
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87 | |
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88 | if (!pfx) |
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89 | pfx = "cftmp."; |
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90 | |
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91 | /* This is a pretty simple method - put the pid as a hex digit and |
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92 | * just keep incrementing the last digit. Check to see if the file |
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93 | * already exists - if so, we'll just keep looking - eventually we should |
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94 | * find one that is free. |
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95 | */ |
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96 | if (dir != NULL) |
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97 | { |
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98 | do |
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99 | { |
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100 | #ifdef HAVE_SNPRINTF |
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101 | (void) snprintf (name, MAXPATHLEN, "%s/%s%hx.%d", dir, pfx, pid, curtmp); |
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102 | #else |
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103 | (void) sprintf (name, "%s/%s%hx%d", dir, pfx, pid, curtmp); |
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104 | #endif |
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105 | curtmp++; |
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106 | } |
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107 | while (access (name, F_OK) != -1); |
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108 | return (name); |
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109 | } |
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110 | return (NULL); |
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111 | } |
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112 | |
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113 | |
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114 | |
54 | |
115 | /* This function removes everything in the directory. */ |
55 | /* This function removes everything in the directory. */ |
116 | void |
56 | void |
117 | remove_directory (const char *path) |
57 | remove_directory (const char *path) |
118 | { |
58 | { |
… | |
… | |
156 | { |
96 | { |
157 | LOG (llevError, "Unable to remove directory %s\n", path); |
97 | LOG (llevError, "Unable to remove directory %s\n", path); |
158 | } |
98 | } |
159 | } |
99 | } |
160 | |
100 | |
161 | #if defined(sgi) |
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162 | |
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163 | # include <stdio.h> |
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164 | # include <stdlib.h> |
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165 | # include <string.h> |
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166 | |
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167 | # define popen fixed_popen |
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168 | |
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169 | FILE * |
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170 | popen_local (const char *command, const char *type) |
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171 | { |
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172 | int fd[2]; |
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173 | int pd; |
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174 | FILE *ret; |
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175 | |
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176 | if (!strcmp (type, "r")) |
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177 | pd = STDOUT_FILENO; |
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178 | else if (!strcmp (type, "w")) |
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179 | pd = STDIN_FILENO; |
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180 | else |
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181 | return NULL; |
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182 | |
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183 | if (pipe (fd) != -1) |
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184 | { |
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185 | switch (fork ()) |
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186 | { |
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187 | case -1: |
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188 | close (fd[0]); |
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189 | close (fd[1]); |
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190 | break; |
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191 | case 0: |
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192 | close (fd[0]); |
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193 | if ((fd[1] == pd) || (dup2 (fd[1], pd) == pd)) |
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194 | { |
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195 | if (fd[1] != pd) |
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196 | { |
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197 | close (fd[1]); |
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198 | } |
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199 | execl ("/bin/sh", "sh", "-c", command, NULL); |
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200 | close (pd); |
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201 | } |
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202 | _exit (1); |
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203 | break; |
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204 | default: |
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205 | close (fd[1]); |
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206 | if (ret = fdopen (fd[0], type)) |
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207 | { |
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208 | return ret; |
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209 | } |
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210 | close (fd[0]); |
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211 | break; |
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212 | } |
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213 | } |
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214 | return NULL; |
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215 | } |
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216 | |
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217 | #endif /* defined(sgi) */ |
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218 | |
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219 | |
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220 | /***************************************************************************** |
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221 | * String related function |
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222 | ****************************************************************************/ |
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223 | |
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224 | /* |
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225 | * A replacement of strdup(), since it's not defined at some |
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226 | * unix variants. |
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227 | */ |
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228 | char * |
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229 | strdup_local (const char *str) |
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230 | { |
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231 | char *c = (char *) malloc (sizeof (char) * (strlen (str) + 1)); |
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232 | |
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233 | strcpy (c, str); |
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234 | return c; |
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235 | } |
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236 | |
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237 | |
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238 | #define DIGIT(x) (isdigit(x) ? (x) - '0' : \ |
101 | #define DIGIT(x) (isdigit(x) ? (x) - '0' : \ |
239 | islower (x) ? (x) + 10 - 'a' : (x) + 10 - 'A') |
102 | islower (x) ? (x) + 10 - 'a' : (x) + 10 - 'A') |
240 | #define MBASE ('z' - 'a' + 1 + 10) |
103 | #define MBASE ('z' - 'a' + 1 + 10) |
241 | |
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242 | /* This seems to be lacking on some system */ |
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243 | #if !defined(HAVE_STRNCASECMP) |
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244 | int |
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245 | strncasecmp (const char *s1, const char *s2, int n) |
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246 | { |
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247 | register int c1, c2; |
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248 | |
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249 | while (*s1 && *s2 && n) |
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250 | { |
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251 | c1 = tolower (*s1); |
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252 | c2 = tolower (*s2); |
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253 | if (c1 != c2) |
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254 | return (c1 - c2); |
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255 | s1++; |
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256 | s2++; |
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257 | n--; |
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258 | } |
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259 | if (!n) |
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260 | return (0); |
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261 | return (int) (*s1 - *s2); |
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262 | } |
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263 | #endif |
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264 | |
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265 | #if !defined(HAVE_STRCASECMP) |
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266 | int |
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267 | strcasecmp (const char *s1, const char *s2) |
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268 | { |
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269 | register int c1, c2; |
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270 | |
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271 | while (*s1 && *s2) |
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272 | { |
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273 | c1 = tolower (*s1); |
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274 | c2 = tolower (*s2); |
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275 | if (c1 != c2) |
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276 | return (c1 - c2); |
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277 | s1++; |
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278 | s2++; |
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279 | } |
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280 | if (*s1 == '\0' && *s2 == '\0') |
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281 | return 0; |
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282 | return (int) (*s1 - *s2); |
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283 | } |
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284 | #endif |
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285 | |
104 | |
286 | char * |
105 | char * |
287 | strcasestr_local (const char *s, const char *find) |
106 | strcasestr_local (const char *s, const char *find) |
288 | { |
107 | { |
289 | char c, sc; |
108 | char c, sc; |
… | |
… | |
306 | s--; |
125 | s--; |
307 | } |
126 | } |
308 | return (char *) s; |
127 | return (char *) s; |
309 | } |
128 | } |
310 | |
129 | |
311 | #if !defined(HAVE_SNPRINTF) |
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312 | |
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313 | int |
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314 | snprintf (char *dest, int max, const char *format, ...) |
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315 | { |
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316 | va_list var; |
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317 | int ret; |
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318 | |
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319 | va_start (var, format); |
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320 | ret = vsprintf (dest, format, var); |
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321 | va_end (var); |
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322 | if (ret > max) |
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323 | abort (); |
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324 | |
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325 | return ret; |
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326 | } |
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327 | #endif |
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328 | |
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329 | |
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330 | /* |
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331 | * Based on (n+1)^2 = n^2 + 2n + 1 |
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332 | * given that 1^2 = 1, then |
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333 | * 2^2 = 1 + (2 + 1) = 1 + 3 = 4 |
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334 | * 3^2 = 4 + (4 + 1) = 4 + 5 = 1 + 3 + 5 = 9 |
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335 | * 4^2 = 9 + (6 + 1) = 9 + 7 = 1 + 3 + 5 + 7 = 16 |
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336 | * ... |
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337 | * In other words, a square number can be express as the sum of the |
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338 | * series n^2 = 1 + 3 + ... + (2n-1) |
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339 | */ |
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340 | int |
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341 | isqrt (int n) |
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342 | { |
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343 | int result, sum, prev; |
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344 | |
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345 | result = 0; |
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346 | prev = sum = 1; |
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347 | while (sum <= n) |
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348 | { |
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349 | prev += 2; |
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350 | sum += prev; |
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351 | ++result; |
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352 | } |
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353 | return result; |
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354 | } |
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355 | |
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356 | |
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357 | /* |
130 | /* |
358 | * returns a char-pointer to a static array, in which a representation |
131 | * returns a char-pointer to a static array, in which a representation |
359 | * of the decimal number given will be stored. |
132 | * of the decimal number given will be stored. |
360 | */ |
133 | */ |
361 | |
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362 | char * |
134 | char * |
363 | ltostr10 (signed long n) |
135 | ltostr10 (signed long n) |
364 | { |
136 | { |
365 | static char buf[12]; /* maximum size is n=-2 billion, i.e. 11 characters+1 |
137 | static char buf[12]; /* maximum size is n=-2 billion, i.e. 11 characters+1 |
366 | character for the trailing nul character */ |
138 | character for the trailing nul character */ |
… | |
… | |
382 | * then it opens it and returns the file-pointer. |
154 | * then it opens it and returns the file-pointer. |
383 | */ |
155 | */ |
384 | FILE * |
156 | FILE * |
385 | open_and_uncompress (const char *name, int flag, int *compressed) |
157 | open_and_uncompress (const char *name, int flag, int *compressed) |
386 | { |
158 | { |
387 | size_t i; |
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388 | FILE *fp; |
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389 | |
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390 | *compressed = 0; |
159 | *compressed = 0; |
391 | return fopen (name, "r"); |
160 | return fopen (name, "r"); |
392 | } |
161 | } |
393 | |
162 | |
394 | /* |
163 | /* |
… | |
… | |
411 | char buf[MAX_BUF], *cp = buf; |
180 | char buf[MAX_BUF], *cp = buf; |
412 | struct stat statbuf; |
181 | struct stat statbuf; |
413 | |
182 | |
414 | if (!filename || !*filename) |
183 | if (!filename || !*filename) |
415 | return; |
184 | return; |
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185 | |
416 | strcpy (buf, filename); |
186 | assign (buf, filename); |
417 | |
187 | |
418 | while ((cp = strchr (cp + 1, (int) '/'))) |
188 | while ((cp = strchr (cp + 1, (int) '/'))) |
419 | { |
189 | { |
420 | *cp = '\0'; |
190 | *cp = '\0'; |
421 | if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) |
191 | if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) |