1 /* $NetBSD: log.c,v 1.11 2001/01/16 02:50:28 cgd Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ed James. 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 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1987 by Ed James, UC Berkeley. All rights reserved. 41 * 42 * Copy permission is hereby granted provided that this notice is 43 * retained on all partial or complete copies. 44 * 45 * For more info on this and all of my stuff, mail edjames@berkeley.edu. 46 */ 47 48 #include <sys/cdefs.h> 49 #ifndef lint 50 #if 0 51 static char sccsid[] = "@(#)log.c 8.1 (Berkeley) 5/31/93"; 52 #else 53 __RCSID("$NetBSD: log.c,v 1.11 2001/01/16 02:50:28 cgd Exp $"); 54 #endif 55 #endif /* not lint */ 56 57 #include "include.h" 58 #include "pathnames.h" 59 60 static FILE *score_fp; 61 62 int 63 compar(va, vb) 64 const void *va, *vb; 65 { 66 const SCORE *a, *b; 67 68 a = (const SCORE *)va; 69 b = (const SCORE *)vb; 70 if (b->planes == a->planes) 71 return (b->time - a->time); 72 else 73 return (b->planes - a->planes); 74 } 75 76 #define SECAMIN 60 77 #define MINAHOUR 60 78 #define HOURADAY 24 79 #define SECAHOUR (SECAMIN * MINAHOUR) 80 #define SECADAY (SECAHOUR * HOURADAY) 81 #define DAY(t) ((t) / SECADAY) 82 #define HOUR(t) (((t) % SECADAY) / SECAHOUR) 83 #define MIN(t) (((t) % SECAHOUR) / SECAMIN) 84 #define SEC(t) ((t) % SECAMIN) 85 86 const char * 87 timestr(t) 88 int t; 89 { 90 static char s[80]; 91 92 if (DAY(t) > 0) 93 (void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t)); 94 else if (HOUR(t) > 0) 95 (void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t)); 96 else if (MIN(t) > 0) 97 (void)sprintf(s, "%d:%02d", MIN(t), SEC(t)); 98 else if (SEC(t) > 0) 99 (void)sprintf(s, ":%02d", SEC(t)); 100 else 101 *s = '\0'; 102 103 return (s); 104 } 105 106 void 107 open_score_file() 108 { 109 mode_t old_mask; 110 int score_fd; 111 int flags; 112 113 old_mask = umask(0); 114 score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664); 115 umask(old_mask); 116 if (score_fd < 0) { 117 warn("open %s", _PATH_SCORE); 118 return; 119 } 120 if (score_fd < 3) 121 exit(1); 122 /* Set the close-on-exec flag. If this fails for any reason, quit 123 * rather than leave the score file open to tampering. */ 124 flags = fcntl(score_fd, F_GETFD); 125 if (flags < 0) 126 err(1, "fcntl F_GETFD"); 127 flags |= FD_CLOEXEC; 128 if (fcntl(score_fd, F_SETFD, flags) == -1) 129 err(1, "fcntl F_SETFD"); 130 /* 131 * This is done to take advantage of stdio, while still 132 * allowing a O_CREAT during the open(2) of the log file. 133 */ 134 score_fp = fdopen(score_fd, "r+"); 135 if (score_fp == NULL) { 136 warn("fdopen %s", _PATH_SCORE); 137 return; 138 } 139 } 140 141 int 142 log_score(list_em) 143 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 struct utsname name; 150 long offset; 151 152 if (score_fp == NULL) { 153 warnx("no score file available"); 154 return (-1); 155 } 156 157 #ifdef BSD 158 if (flock(fileno(score_fp), LOCK_EX) < 0) 159 #endif 160 #ifdef SYSV 161 while (lockf(fileno(score_fp), F_LOCK, 1) < 0) 162 #endif 163 { 164 warn("flock %s", _PATH_SCORE); 165 return (-1); 166 } 167 for (;;) { 168 good = fscanf(score_fp, SCORE_SCANF_FMT, 169 score[num_scores].name, 170 score[num_scores].host, 171 score[num_scores].game, 172 &score[num_scores].planes, 173 &score[num_scores].time, 174 &score[num_scores].real_time); 175 if (good != 6 || ++num_scores >= NUM_SCORES) 176 break; 177 } 178 if (!test_mode && !list_em) { 179 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) { 180 fprintf(stderr, 181 "getpwuid failed for uid %d. Who are you?\n", 182 (int)getuid()); 183 return (-1); 184 } 185 strcpy(thisscore.name, pw->pw_name); 186 uname(&name); 187 strncpy(thisscore.host, name.nodename, sizeof(thisscore.host)-1); 188 thisscore.host[sizeof(thisscore.host) - 1] = '\0'; 189 190 cp = strrchr(file, '/'); 191 if (cp == NULL) { 192 fprintf(stderr, "log: where's the '/' in %s?\n", file); 193 return (-1); 194 } 195 cp++; 196 strcpy(thisscore.game, cp); 197 198 thisscore.time = clck; 199 thisscore.planes = safe_planes; 200 thisscore.real_time = time(0) - start_time; 201 202 for (i = 0; i < num_scores; i++) { 203 if (strcmp(thisscore.name, score[i].name) == 0 && 204 strcmp(thisscore.host, score[i].host) == 0 && 205 strcmp(thisscore.game, score[i].game) == 0) { 206 if (thisscore.time > score[i].time) { 207 score[i].time = thisscore.time; 208 score[i].planes = thisscore.planes; 209 score[i].real_time = 210 thisscore.real_time; 211 changed++; 212 } 213 found++; 214 break; 215 } 216 } 217 if (!found) { 218 for (i = 0; i < num_scores; i++) { 219 if (thisscore.time > score[i].time) { 220 if (num_scores < NUM_SCORES) 221 num_scores++; 222 memcpy(&score[num_scores - 1], 223 &score[i], 224 sizeof (score[i])); 225 memcpy(&score[i], &thisscore, 226 sizeof (score[i])); 227 changed++; 228 break; 229 } 230 } 231 } 232 if (!found && !changed && num_scores < NUM_SCORES) { 233 memcpy(&score[num_scores], &thisscore, 234 sizeof (score[num_scores])); 235 num_scores++; 236 changed++; 237 } 238 239 if (changed) { 240 if (found) 241 puts("You beat your previous score!"); 242 else 243 puts("You made the top players list!"); 244 qsort(score, num_scores, sizeof (*score), compar); 245 rewind(score_fp); 246 for (i = 0; i < num_scores; i++) 247 fprintf(score_fp, "%s %s %s %d %d %d\n", 248 score[i].name, score[i].host, 249 score[i].game, score[i].planes, 250 score[i].time, score[i].real_time); 251 fflush(score_fp); 252 if (ferror(score_fp)) 253 warn("error writing %s", _PATH_SCORE); 254 /* It is just possible that updating an entry could 255 * have reduced the length of the file, so we 256 * truncate it. The seeks are required for stream/fd 257 * synchronisation by POSIX.1. */ 258 offset = ftell(score_fp); 259 lseek(fileno(score_fp), 0, SEEK_SET); 260 ftruncate(fileno(score_fp), offset); 261 rewind(score_fp); 262 } else { 263 if (found) 264 puts("You didn't beat your previous score."); 265 else 266 puts("You didn't make the top players list."); 267 } 268 putchar('\n'); 269 } 270 #ifdef BSD 271 flock(fileno(score_fp), LOCK_UN); 272 #endif 273 #ifdef SYSV 274 /* lock will evaporate upon close */ 275 #endif 276 fclose(score_fp); 277 printf("%2s: %-8s %-8s %-18s %4s %9s %4s\n", "#", "name", "host", 278 "game", "time", "real time", "planes safe"); 279 puts("-------------------------------------------------------------------------------"); 280 for (i = 0; i < num_scores; i++) { 281 cp = strchr(score[i].host, '.'); 282 if (cp != NULL) 283 *cp = '\0'; 284 printf("%2d: %-8s %-8s %-18s %4d %9s %4d\n", i + 1, 285 score[i].name, score[i].host, score[i].game, 286 score[i].time, timestr(score[i].real_time), 287 score[i].planes); 288 } 289 putchar('\n'); 290 return (0); 291 } 292 293 void 294 log_score_quit(dummy) 295 int dummy __attribute__((__unused__)); 296 { 297 (void)log_score(0); 298 exit(0); 299 } 300