1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ed James. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)log.c 8.1 (Berkeley) 5/31/93 37 * $FreeBSD: src/games/atc/log.c,v 1.7 1999/11/30 03:48:20 billf Exp $ 38 * $DragonFly: src/games/atc/log.c,v 1.3 2006/08/08 15:03:02 pavalos Exp $ 39 */ 40 41 /* 42 * Copyright (c) 1987 by Ed James, UC Berkeley. All rights reserved. 43 * 44 * Copy permission is hereby granted provided that this notice is 45 * retained on all partial or complete copies. 46 * 47 * For more info on this and all of my stuff, mail edjames@berkeley.edu. 48 */ 49 50 #include <sys/stat.h> 51 #include <err.h> 52 53 #include "include.h" 54 #include "pathnames.h" 55 56 #ifdef SYSV 57 #include <sys/utsname.h> 58 #endif 59 60 static FILE *score_fp; 61 62 static int compar(const void *, const void *); 63 static const char *timestr(int); 64 65 66 static int 67 compar(const void *va, const void *vb) 68 { 69 const SCORE *a, *b; 70 71 a = (const SCORE *)va; 72 b = (const SCORE *)vb; 73 74 if (b->planes == a->planes) 75 return (b->time - a->time); 76 else 77 return (b->planes - a->planes); 78 } 79 80 #define SECAMIN 60 81 #define MINAHOUR 60 82 #define HOURADAY 24 83 #define SECAHOUR (SECAMIN * MINAHOUR) 84 #define SECADAY (SECAHOUR * HOURADAY) 85 #define DAY(t) ((t) / SECADAY) 86 #define HOUR(t) (((t) % SECADAY) / SECAHOUR) 87 #define MIN(t) (((t) % SECAHOUR) / SECAMIN) 88 #define SEC(t) ((t) % SECAMIN) 89 90 static const char * 91 timestr(int t) 92 { 93 static char s[80]; 94 95 if (DAY(t) > 0) 96 (void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t)); 97 else if (HOUR(t) > 0) 98 (void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t)); 99 else if (MIN(t) > 0) 100 (void)sprintf(s, "%d:%02d", MIN(t), SEC(t)); 101 else if (SEC(t) > 0) 102 (void)sprintf(s, ":%02d", SEC(t)); 103 else 104 *s = '\0'; 105 106 return (s); 107 } 108 109 void 110 open_score_file(void) 111 { 112 mode_t old_mask; 113 int score_fd; 114 int flags; 115 116 old_mask = umask(0); 117 score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664); 118 umask(old_mask); 119 if (score_fd < 0) { 120 warn("open %s", _PATH_SCORE); 121 return; 122 } 123 /* Set the close-on-exec flag. If this fails for any reason, quit 124 * rather than leave the score file open to tampering. */ 125 flags = fcntl(score_fd, F_GETFD); 126 if (flags < 0) 127 err(1, "fcntl F_GETFD"); 128 flags |= FD_CLOEXEC; 129 if (fcntl(score_fd, F_SETFD, flags) == -1) 130 err(1, "fcntl F_SETFD"); 131 /* 132 * This is done to take advantage of stdio, while still 133 * allowing a O_CREAT during the open(2) of the log file. 134 */ 135 score_fp = fdopen(score_fd, "r+"); 136 if (score_fp == NULL) { 137 warn("fdopen %s", _PATH_SCORE); 138 return; 139 } 140 } 141 142 int 143 log_score(int list_em) 144 { 145 int i, num_scores = 0, good, changed = 0, found = 0; 146 struct passwd *pw; 147 char *cp; 148 SCORE score[100], thisscore; 149 #ifdef SYSV 150 struct utsname name; 151 #endif 152 153 if (score_fp == NULL) { 154 warnx("no score file available"); 155 return (-1); 156 } 157 158 #ifdef BSD 159 if (flock(fileno(score_fp), LOCK_EX) < 0) 160 #endif 161 #ifdef SYSV 162 while (lockf(fileno(score_fp), F_LOCK, 1) < 0) 163 #endif 164 { 165 warn("flock %s", _PATH_SCORE); 166 return (-1); 167 } 168 for (;;) { 169 good = fscanf(score_fp, SCORE_SCANF_FMT, 170 score[num_scores].name, 171 score[num_scores].host, 172 score[num_scores].game, 173 &score[num_scores].planes, 174 &score[num_scores].time, 175 &score[num_scores].real_time); 176 if (good != 6 || ++num_scores >= NUM_SCORES) 177 break; 178 } 179 if (!test_mode && !list_em) { 180 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) { 181 fprintf(stderr, 182 "getpwuid failed for uid %d. Who are you?\n", 183 (int)getuid()); 184 return (-1); 185 } 186 strcpy(thisscore.name, pw->pw_name); 187 #ifdef BSD 188 if (gethostname(thisscore.host, sizeof (thisscore.host)) < 0) { 189 perror("gethostname"); 190 return (-1); 191 } 192 #endif 193 #ifdef SYSV 194 uname(&name); 195 strcpy(thisscore.host, name.nodename); 196 #endif 197 198 cp = rindex(filename, '/'); 199 if (cp == NULL) { 200 fprintf(stderr, "log: where's the '/' in %s?\n", filename); 201 return (-1); 202 } 203 cp++; 204 strcpy(thisscore.game, cp); 205 206 thisscore.time = clck; 207 thisscore.planes = safe_planes; 208 thisscore.real_time = time(0) - start_time; 209 210 for (i = 0; i < num_scores; i++) { 211 if (strcmp(thisscore.name, score[i].name) == 0 && 212 strcmp(thisscore.host, score[i].host) == 0 && 213 strcmp(thisscore.game, score[i].game) == 0) { 214 if (thisscore.time > score[i].time) { 215 score[i].time = thisscore.time; 216 score[i].planes = thisscore.planes; 217 score[i].real_time = 218 thisscore.real_time; 219 changed++; 220 } 221 found++; 222 break; 223 } 224 } 225 if (!found) { 226 for (i = 0; i < num_scores; i++) { 227 if (thisscore.time > score[i].time) { 228 if (num_scores < NUM_SCORES) 229 num_scores++; 230 bcopy(&score[i], 231 &score[num_scores - 1], 232 sizeof (score[i])); 233 bcopy(&thisscore, &score[i], 234 sizeof (score[i])); 235 changed++; 236 break; 237 } 238 } 239 } 240 if (!found && !changed && num_scores < NUM_SCORES) { 241 bcopy(&thisscore, &score[num_scores], 242 sizeof (score[num_scores])); 243 num_scores++; 244 changed++; 245 } 246 247 if (changed) { 248 if (found) 249 puts("You beat your previous score!"); 250 else 251 puts("You made the top players list!"); 252 qsort(score, num_scores, sizeof (*score), compar); 253 rewind(score_fp); 254 for (i = 0; i < num_scores; i++) 255 fprintf(score_fp, "%s %s %s %d %d %d\n", 256 score[i].name, score[i].host, 257 score[i].game, score[i].planes, 258 score[i].time, score[i].real_time); 259 fflush(score_fp); 260 if (ferror(score_fp)) 261 warn("error writing %s", _PATH_SCORE); 262 /* It is just possible that updating an entry could 263 * have reduced the length of the file, so we 264 * truncate it. The lseek is required for stream/fd 265 * synchronisation by POSIX.1. */ 266 lseek(fileno(score_fp), 0, SEEK_END); 267 ftruncate(fileno(score_fp), ftell(score_fp)); 268 } else { 269 if (found) 270 puts("You didn't beat your previous score."); 271 else 272 puts("You didn't make the top players list."); 273 } 274 putchar('\n'); 275 } 276 #ifdef BSD 277 flock(fileno(score_fp), LOCK_UN); 278 #endif 279 #ifdef SYSV 280 /* lock will evaporate upon close */ 281 #endif 282 fclose(score_fp); 283 printf("%2s: %-8s %-8s %-18s %4s %9s %4s\n", "#", "name", "host", 284 "game", "time", "real time", "planes safe"); 285 puts("-------------------------------------------------------------------------------"); 286 for (i = 0; i < num_scores; i++) { 287 cp = index(score[i].host, '.'); 288 if (cp != NULL) 289 *cp = '\0'; 290 printf("%2d: %-8s %-8s %-18s %4d %9s %4d\n", i + 1, 291 score[i].name, score[i].host, score[i].game, 292 score[i].time, timestr(score[i].real_time), 293 score[i].planes); 294 } 295 putchar('\n'); 296 return (0); 297 } 298