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