log.c revision 1.21
1 /* $NetBSD: log.c,v 1.21 2009/08/12 04:48:03 dholland 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1987 by Ed James, UC Berkeley. All rights reserved. 37 * 38 * Copy permission is hereby granted provided that this notice is 39 * retained on all partial or complete copies. 40 * 41 * For more info on this and all of my stuff, mail edjames (at) berkeley.edu. 42 */ 43 44 #include <sys/cdefs.h> 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)log.c 8.1 (Berkeley) 5/31/93"; 48 #else 49 __RCSID("$NetBSD: log.c,v 1.21 2009/08/12 04:48:03 dholland Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 #include "include.h" 54 #include "pathnames.h" 55 56 static FILE *score_fp; 57 58 static int 59 compar(const void *va, const void *vb) 60 { 61 const SCORE *a, *b; 62 63 a = (const SCORE *)va; 64 b = (const SCORE *)vb; 65 if (b->planes == a->planes) 66 return (b->time - a->time); 67 else 68 return (b->planes - a->planes); 69 } 70 71 #define SECAMIN 60 72 #define MINAHOUR 60 73 #define HOURADAY 24 74 #define SECAHOUR (SECAMIN * MINAHOUR) 75 #define SECADAY (SECAHOUR * HOURADAY) 76 #define DAY(t) ((t) / SECADAY) 77 #define HOUR(t) (((t) % SECADAY) / SECAHOUR) 78 #define MIN(t) (((t) % SECAHOUR) / SECAMIN) 79 #define SEC(t) ((t) % SECAMIN) 80 81 static const char * 82 timestr(int t) 83 { 84 static char s[80]; 85 86 if (DAY(t) > 0) 87 (void)snprintf(s, sizeof(s), "%dd+%02dhrs", DAY(t), HOUR(t)); 88 else if (HOUR(t) > 0) 89 (void)snprintf(s, sizeof(s), "%d:%02d:%02d", HOUR(t), MIN(t), 90 SEC(t)); 91 else if (MIN(t) > 0) 92 (void)snprintf(s, sizeof(s), "%d:%02d", MIN(t), SEC(t)); 93 else if (SEC(t) > 0) 94 (void)snprintf(s, sizeof(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 #if defined(O_NOFOLLOW) 110 score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR|O_NOFOLLOW, 0664); 111 #else 112 score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664); 113 #endif 114 (void)umask(old_mask); 115 if (score_fd < 0) { 116 warn("open %s", _PATH_SCORE); 117 return; 118 } 119 if (score_fd < 3) 120 exit(1); 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 lname; 148 long offset; 149 150 if (score_fp == NULL) { 151 warnx("no score file available"); 152 return (-1); 153 } 154 155 #ifdef BSD 156 if (flock(fileno(score_fp), LOCK_EX) < 0) 157 #endif 158 #ifdef SYSV 159 if (lockf(fileno(score_fp), F_LOCK, 1) < 0) 160 #endif 161 { 162 warn("flock %s", _PATH_SCORE); 163 return (-1); 164 } 165 for (;;) { 166 good = fscanf(score_fp, SCORE_SCANF_FMT, 167 score[num_scores].name, 168 score[num_scores].host, 169 score[num_scores].game, 170 &score[num_scores].planes, 171 &score[num_scores].time, 172 &score[num_scores].real_time); 173 if (good != 6 || ++num_scores >= NUM_SCORES) 174 break; 175 } 176 if (!test_mode && !list_em) { 177 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) { 178 (void)fprintf(stderr, 179 "getpwuid failed for uid %d. Who are you?\n", 180 (int)getuid()); 181 return (-1); 182 } 183 (void)strlcpy(thisscore.name, pw->pw_name, SCORE_NAME_LEN); 184 (void)uname(&lname); 185 (void)strlcpy(thisscore.host, lname.nodename, 186 sizeof(thisscore.host)); 187 188 cp = strrchr(filename, '/'); 189 if (cp == NULL) { 190 (void)fprintf(stderr, "log: where's the '/' in %s?\n", 191 filename); 192 return (-1); 193 } 194 cp++; 195 (void)strlcpy(thisscore.game, cp, SCORE_GAME_LEN); 196 197 thisscore.time = clck; 198 thisscore.planes = safe_planes; 199 thisscore.real_time = time(0) - start_time; 200 201 for (i = 0; i < num_scores; i++) { 202 if (strcmp(thisscore.name, score[i].name) == 0 && 203 strcmp(thisscore.host, score[i].host) == 0 && 204 strcmp(thisscore.game, score[i].game) == 0) { 205 if (thisscore.time > score[i].time) { 206 score[i].time = thisscore.time; 207 score[i].planes = thisscore.planes; 208 score[i].real_time = 209 thisscore.real_time; 210 changed++; 211 } 212 found++; 213 break; 214 } 215 } 216 if (!found) { 217 for (i = 0; i < num_scores; i++) { 218 if (thisscore.time > score[i].time) { 219 if (num_scores < NUM_SCORES) 220 num_scores++; 221 (void)memcpy(&score[num_scores - 1], 222 &score[i], sizeof (score[i])); 223 (void)memcpy(&score[i], &thisscore, 224 sizeof (score[i])); 225 changed++; 226 break; 227 } 228 } 229 } 230 if (!found && !changed && num_scores < NUM_SCORES) { 231 (void)memcpy(&score[num_scores], &thisscore, 232 sizeof (score[num_scores])); 233 num_scores++; 234 changed++; 235 } 236 237 if (changed) { 238 if (found) 239 (void)puts("You beat your previous score!"); 240 else 241 (void)puts("You made the top players list!"); 242 qsort(score, (size_t)num_scores, sizeof (*score), 243 compar); 244 rewind(score_fp); 245 for (i = 0; i < num_scores; i++) 246 (void)fprintf(score_fp, "%s %s %s %d %d %d\n", 247 score[i].name, score[i].host, 248 score[i].game, score[i].planes, 249 score[i].time, score[i].real_time); 250 (void)fflush(score_fp); 251 if (ferror(score_fp)) 252 warn("error writing %s", _PATH_SCORE); 253 /* It is just possible that updating an entry could 254 * have reduced the length of the file, so we 255 * truncate it. The seeks are required for stream/fd 256 * synchronisation by POSIX.1. */ 257 offset = ftell(score_fp); 258 (void)lseek(fileno(score_fp), (off_t)0, SEEK_SET); 259 (void)ftruncate(fileno(score_fp), (off_t)offset); 260 rewind(score_fp); 261 } else { 262 if (found) 263 (void)puts( 264 "You didn't beat your previous score."); 265 else 266 (void)puts( 267 "You didn't make the top players list."); 268 } 269 (void)putchar('\n'); 270 } 271 #ifdef BSD 272 (void)flock(fileno(score_fp), LOCK_UN); 273 #endif 274 #ifdef SYSV 275 /* lock will evaporate upon close */ 276 #endif 277 (void)fclose(score_fp); 278 (void)printf("%2s: %-8s %-8s %-18s %4s %9s %4s\n", "#", "name", 279 "host", "game", "time", "real time", "planes safe"); 280 (void)printf("-------------------------------------------------------"); 281 (void)printf("-------------------------\n"); 282 for (i = 0; i < num_scores; i++) { 283 cp = strchr(score[i].host, '.'); 284 if (cp != NULL) 285 *cp = '\0'; 286 (void)printf("%2d: %-8s %-8s %-18s %4d %9s %4d\n", i + 1, 287 score[i].name, score[i].host, score[i].game, 288 score[i].time, timestr(score[i].real_time), 289 score[i].planes); 290 } 291 (void)putchar('\n'); 292 return (0); 293 } 294 295 /* ARGSUSED */ 296 void 297 log_score_quit(int dummy __unused) 298 { 299 (void)log_score(0); 300 exit(0); 301 } 302
Indexes created Thu Sep 25 06:09:39 GMT 2025