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 #include <sys/utsname.h> 57 58 static FILE *score_fp; 59 60 static int compar(const void *, const void *); 61 static const char *timestr(int); 62 63 64 static int 65 compar(const void *va, const void *vb) 66 { 67 const SCORE *a, *b; 68 69 a = (const SCORE *)va; 70 b = (const SCORE *)vb; 71 72 if (b->planes == a->planes) 73 return (b->time - a->time); 74 else 75 return (b->planes - a->planes); 76 } 77 78 #define SECAMIN 60 79 #define MINAHOUR 60 80 #define HOURADAY 24 81 #define SECAHOUR (SECAMIN * MINAHOUR) 82 #define SECADAY (SECAHOUR * HOURADAY) 83 #define DAY(t) ((t) / SECADAY) 84 #define HOUR(t) (((t) % SECADAY) / SECAHOUR) 85 #define MIN(t) (((t) % SECAHOUR) / SECAMIN) 86 #define SEC(t) ((t) % SECAMIN) 87 88 static const char * 89 timestr(int t) 90 { 91 static char s[80]; 92 93 if (DAY(t) > 0) 94 (void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t)); 95 else if (HOUR(t) > 0) 96 (void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t)); 97 else if (MIN(t) > 0) 98 (void)sprintf(s, "%d:%02d", MIN(t), SEC(t)); 99 else if (SEC(t) > 0) 100 (void)sprintf(s, ":%02d", SEC(t)); 101 else 102 *s = '\0'; 103 104 return (s); 105 } 106 107 void 108 open_score_file(void) 109 { 110 mode_t old_mask; 111 int score_fd; 112 int flags; 113 114 old_mask = umask(0); 115 score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664); 116 umask(old_mask); 117 if (score_fd < 0) { 118 warn("open %s", _PATH_SCORE); 119 return; 120 } 121 /* Set the close-on-exec flag. If this fails for any reason, quit 122 * rather than leave the score file open to tampering. */ 123 flags = fcntl(score_fd, F_GETFD); 124 if (flags < 0) 125 err(1, "fcntl F_GETFD"); 126 flags |= FD_CLOEXEC; 127 if (fcntl(score_fd, F_SETFD, flags) == -1) 128 err(1, "fcntl F_SETFD"); 129 /* 130 * This is done to take advantage of stdio, while still 131 * allowing a O_CREAT during the open(2) of the log file. 132 */ 133 score_fp = fdopen(score_fd, "r+"); 134 if (score_fp == NULL) { 135 warn("fdopen %s", _PATH_SCORE); 136 return; 137 } 138 } 139 140 int 141 log_score(int list_em) 142 { 143 int i, num_scores = 0, good, changed = 0, found = 0; 144 struct passwd *pw; 145 char *cp; 146 SCORE score[100], thisscore; 147 struct utsname xname; 148 149 if (score_fp == NULL) { 150 warnx("no score file available"); 151 return (-1); 152 } 153 154 if (flock(fileno(score_fp), LOCK_EX) < 0) 155 { 156 warn("flock %s", _PATH_SCORE); 157 return (-1); 158 } 159 for (;;) { 160 good = fscanf(score_fp, SCORE_SCANF_FMT, 161 score[num_scores].name, 162 score[num_scores].host, 163 score[num_scores].game, 164 &score[num_scores].planes, 165 &score[num_scores].time, 166 &score[num_scores].real_time); 167 if (good != 6 || ++num_scores >= NUM_SCORES) 168 break; 169 } 170 if (!test_mode && !list_em) { 171 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) { 172 fprintf(stderr, 173 "getpwuid failed for uid %d. Who are you?\n", 174 (int)getuid()); 175 return (-1); 176 } 177 strcpy(thisscore.name, pw->pw_name); 178 179 uname(&xname); 180 strcpy(thisscore.host, xname.nodename); 181 182 cp = rindex(filename, '/'); 183 if (cp == NULL) { 184 fprintf(stderr, "log: where's the '/' in %s?\n", filename); 185 return (-1); 186 } 187 cp++; 188 strcpy(thisscore.game, cp); 189 190 thisscore.time = clck; 191 thisscore.planes = safe_planes; 192 thisscore.real_time = time(0) - start_time; 193 194 for (i = 0; i < num_scores; i++) { 195 if (strcmp(thisscore.name, score[i].name) == 0 && 196 strcmp(thisscore.host, score[i].host) == 0 && 197 strcmp(thisscore.game, score[i].game) == 0) { 198 if (thisscore.time > score[i].time) { 199 score[i].time = thisscore.time; 200 score[i].planes = thisscore.planes; 201 score[i].real_time = 202 thisscore.real_time; 203 changed++; 204 } 205 found++; 206 break; 207 } 208 } 209 if (!found) { 210 for (i = 0; i < num_scores; i++) { 211 if (thisscore.time > score[i].time) { 212 if (num_scores < NUM_SCORES) 213 num_scores++; 214 bcopy(&score[i], 215 &score[num_scores - 1], 216 sizeof (score[i])); 217 bcopy(&thisscore, &score[i], 218 sizeof (score[i])); 219 changed++; 220 break; 221 } 222 } 223 } 224 if (!found && !changed && num_scores < NUM_SCORES) { 225 bcopy(&thisscore, &score[num_scores], 226 sizeof (score[num_scores])); 227 num_scores++; 228 changed++; 229 } 230 231 if (changed) { 232 if (found) 233 puts("You beat your previous score!"); 234 else 235 puts("You made the top players list!"); 236 qsort(score, num_scores, sizeof (*score), compar); 237 rewind(score_fp); 238 for (i = 0; i < num_scores; i++) 239 fprintf(score_fp, "%s %s %s %d %d %d\n", 240 score[i].name, score[i].host, 241 score[i].game, score[i].planes, 242 score[i].time, score[i].real_time); 243 fflush(score_fp); 244 if (ferror(score_fp)) 245 warn("error writing %s", _PATH_SCORE); 246 /* It is just possible that updating an entry could 247 * have reduced the length of the file, so we 248 * truncate it. The lseek is required for stream/fd 249 * synchronisation by POSIX.1. */ 250 lseek(fileno(score_fp), 0, SEEK_END); 251 ftruncate(fileno(score_fp), ftell(score_fp)); 252 } else { 253 if (found) 254 puts("You didn't beat your previous score."); 255 else 256 puts("You didn't make the top players list."); 257 } 258 putchar('\n'); 259 } 260 flock(fileno(score_fp), LOCK_UN); 261 fclose(score_fp); 262 printf("%2s: %-8s %-8s %-18s %4s %9s %4s\n", "#", "name", "host", 263 "game", "time", "real time", "planes safe"); 264 puts("-------------------------------------------------------------------------------"); 265 for (i = 0; i < num_scores; i++) { 266 cp = index(score[i].host, '.'); 267 if (cp != NULL) 268 *cp = '\0'; 269 printf("%2d: %-8s %-8s %-18s %4d %9s %4d\n", i + 1, 270 score[i].name, score[i].host, score[i].game, 271 score[i].time, timestr(score[i].real_time), 272 score[i].planes); 273 } 274 putchar('\n'); 275 return (0); 276 } 277