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Commit a5d107f3 authored by Richard M. Stallman's avatar Richard M. Stallman
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Whitespace changes.

parent 22b94eeb
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Showing with 122 additions and 125 deletions
lib-src/update-game-score.c
View file @ a5d107f3
......@@ -69,22 +69,20 @@ extern int optind, opterr;
#endif
int
usage(err)
usage (err)
int err;
{
fprintf(stdout, "Usage: update-game-score [-m MAX ] [ -r ] game/scorefile SCORE DATA\n");
fprintf(stdout, " update-game-score -h\n");
fprintf(stdout, " -h\t\tDisplay this help.\n");
fprintf(stdout, " -m MAX\t\tLimit the maximum number of scores to MAX.\n");
fprintf(stdout, " -r\t\tSort the scores in increasing order.\n");
fprintf(stdout, " -d DIR\t\tStore scores in DIR (only if not setuid).\n");
exit(err);
fprintf (stdout, "Usage: update-game-score [-m MAX ] [ -r ] game/scorefile SCORE DATA\n");
fprintf (stdout, " update-game-score -h\n");
fprintf (stdout, " -h\t\tDisplay this help.\n");
fprintf (stdout, " -m MAX\t\tLimit the maximum number of scores to MAX.\n");
fprintf (stdout, " -r\t\tSort the scores in increasing order.\n");
fprintf (stdout, " -d DIR\t\tStore scores in DIR (only if not setuid).\n");
exit (err);
}
int
lock_file P_((const char *filename, void **state));
int
unlock_file P_((const char *filename, void *state));
int lock_file P_ ((const char *filename, void **state));
int unlock_file P_ ((const char *filename, void *state));
struct score_entry
{
......@@ -93,77 +91,75 @@ struct score_entry
char *data;
};
int
read_scores P_((const char *filename, struct score_entry **scores,
int *count));
int
push_score P_((struct score_entry **scores, int *count,
int newscore, char *username, char *newdata));
void
sort_scores P_((struct score_entry *scores, int count, int reverse));
int
write_scores P_((const char *filename, const struct score_entry *scores,
int count));
int read_scores P_ ((const char *filename, struct score_entry **scores,
int *count));
int push_score P_ ((struct score_entry **scores, int *count,
int newscore, char *username, char *newdata));
void sort_scores P_ ((struct score_entry *scores, int count, int reverse));
int write_scores P_ ((const char *filename, const struct score_entry *scores,
int count));
void lose P_((const char *msg)) NO_RETURN;
void lose P_ ((const char *msg)) NO_RETURN;
void lose(msg)
void
lose (msg)
const char *msg;
{
fprintf(stderr, "%s\n", msg);
exit(1);
fprintf (stderr, "%s\n", msg);
exit (1);
}
void lose_syserr P_((const char *msg)) NO_RETURN;
void lose_syserr P_ ((const char *msg)) NO_RETURN;
void lose_syserr(msg)
void
lose_syserr (msg)
const char *msg;
{
fprintf(stderr, "%s: %s\n", msg, strerror(errno));
exit(1);
fprintf (stderr, "%s: %s\n", msg, strerror (errno));
exit (1);
}
char *
get_user_id P_ ((void))
{
char *name;
struct passwd *buf = getpwuid(getuid());
struct passwd *buf = getpwuid (getuid ());
if (!buf)
{
int count = 1;
int uid = (int) getuid();
int uid = (int) getuid ();
int tuid = uid;
while (tuid /= 10)
count++;
name = malloc(count+1);
name = malloc (count+1);
if (!name)
return NULL;
sprintf(name, "%d", uid);
sprintf (name, "%d", uid);
return name;
}
return buf->pw_name;
}
char *
get_prefix(running_suid, user_prefix)
get_prefix (running_suid, user_prefix)
int running_suid;
char *user_prefix;
{
if (!running_suid && user_prefix == NULL)
lose("Not using a shared game directory, and no prefix given.");
lose ("Not using a shared game directory, and no prefix given.");
if (running_suid)
{
#ifdef HAVE_SHARED_GAME_DIR
return HAVE_SHARED_GAME_DIR;
#else
lose("This program was compiled without HAVE_SHARED_GAME_DIR,\n and should not be suid.");
lose ("This program was compiled without HAVE_SHARED_GAME_DIR,\n and should not be suid.");
#endif
}
return user_prefix;
}
int
main(argc, argv)
main (argc, argv)
int argc;
char **argv;
{
......@@ -175,13 +171,13 @@ main(argc, argv)
int newscore, scorecount, reverse = 0, max = MAX_SCORES;
char *newdata;
srand(time(0));
srand (time (0));
while ((c = getopt(argc, argv, "hrm:d:")) != -1)
while ((c = getopt (argc, argv, "hrm:d:")) != -1)
switch (c)
{
case 'h':
usage(0);
usage (0);
break;
case 'd':
user_prefix = optarg;
......@@ -190,48 +186,48 @@ main(argc, argv)
reverse = 1;
break;
case 'm':
max = atoi(optarg);
max = atoi (optarg);
if (max > MAX_SCORES)
max = MAX_SCORES;
break;
default:
usage(1);
usage (1);
}
if (optind+3 != argc)
usage(1);
usage (1);
running_suid = (getuid() != geteuid());
running_suid = (getuid () != geteuid ());
prefix = get_prefix(running_suid, user_prefix);
prefix = get_prefix (running_suid, user_prefix);
scorefile = malloc(strlen(prefix) + strlen(argv[optind]) + 2);
scorefile = malloc (strlen (prefix) + strlen (argv[optind]) + 2);
if (!scorefile)
lose_syserr("Couldn't allocate score file");
lose_syserr ("Couldn't allocate score file");
strcpy(scorefile, prefix);
strcat(scorefile, "/");
strcat(scorefile, argv[optind]);
newscore = atoi(argv[optind+1]);
strcpy (scorefile, prefix);
strcat (scorefile, "/");
strcat (scorefile, argv[optind]);
newscore = atoi (argv[optind+1]);
newdata = argv[optind+2];
if (strlen(newdata) > MAX_DATA_LEN)
if (strlen (newdata) > MAX_DATA_LEN)
newdata[MAX_DATA_LEN] = '\0';
if ((user_id = get_user_id()) == NULL)
lose_syserr("Couldn't determine user id");
if ((user_id = get_user_id ()) == NULL)
lose_syserr ("Couldn't determine user id");
if (stat(scorefile, &buf) < 0)
lose_syserr("Failed to access scores file");
if (stat (scorefile, &buf) < 0)
lose_syserr ("Failed to access scores file");
if (lock_file(scorefile, &lockstate) < 0)
lose_syserr("Failed to lock scores file");
if (lock_file (scorefile, &lockstate) < 0)
lose_syserr ("Failed to lock scores file");
if (read_scores(scorefile, &scores, &scorecount) < 0)
if (read_scores (scorefile, &scores, &scorecount) < 0)
{
unlock_file(scorefile, lockstate);
lose_syserr("Failed to read scores file");
unlock_file (scorefile, lockstate);
lose_syserr ("Failed to read scores file");
}
push_score(&scores, &scorecount, newscore, user_id, newdata);
push_score (&scores, &scorecount, newscore, user_id, newdata);
/* Limit the number of scores. If we're using reverse sorting, then
we should increment the beginning of the array, to skip over the
*smallest* scores. Otherwise, we just decrement the number of
......@@ -240,58 +236,58 @@ main(argc, argv)
scorecount -= (scorecount - MAX_SCORES);
if (reverse)
scores += (scorecount - MAX_SCORES);
sort_scores(scores, scorecount, reverse);
if (write_scores(scorefile, scores, scorecount) < 0)
sort_scores (scores, scorecount, reverse);
if (write_scores (scorefile, scores, scorecount) < 0)
{
unlock_file(scorefile, lockstate);
lose_syserr("Failed to write scores file");
unlock_file (scorefile, lockstate);
lose_syserr ("Failed to write scores file");
}
unlock_file(scorefile, lockstate);
exit(0);
unlock_file (scorefile, lockstate);
exit (0);
}
int
read_score(f, score)
read_score (f, score)
FILE *f;
struct score_entry *score;
{
int c;
if (feof(f))
if (feof (f))
return 1;
while ((c = getc(f)) != EOF
&& isdigit(c))
while ((c = getc (f)) != EOF
&& isdigit (c))
{
score->score *= 10;
score->score += (c-48);
}
while ((c = getc(f)) != EOF
&& isspace(c))
while ((c = getc (f)) != EOF
&& isspace (c))
;
if (c == EOF)
return -1;
ungetc(c, f);
ungetc (c, f);
#ifdef HAVE_GETDELIM
{
size_t count = 0;
if (getdelim(&score->username, &count, ' ', f) < 1
if (getdelim (&score->username, &count, ' ', f) < 1
|| score->username == NULL)
return -1;
/* Trim the space */
score->username[strlen(score->username)-1] = '\0';
score->username[strlen (score->username)-1] = '\0';
}
#else
{
int unameread = 0;
int unamelen = 30;
char *username = malloc(unamelen);
char *username = malloc (unamelen);
if (!username)
return -1;
while ((c = getc(f)) != EOF
&& !isspace(c))
while ((c = getc (f)) != EOF
&& !isspace (c))
{
if (unameread >= unamelen-1)
if (!(username = realloc(username, unamelen *= 2)))
if (!(username = realloc (username, unamelen *= 2)))
return -1;
username[unameread] = c;
unameread++;
......@@ -307,23 +303,23 @@ read_score(f, score)
errno = 0;
{
size_t len;
if (getline(&score->data, &len, f) < 0)
if (getline (&score->data, &len, f) < 0)
return -1;
score->data[strlen(score->data)-1] = '\0';
score->data[strlen (score->data)-1] = '\0';
}
#else
{
int cur = 0;
int len = 16;
char *buf = malloc(len);
char *buf = malloc (len);
if (!buf)
return -1;
while ((c = getc(f)) != EOF
while ((c = getc (f)) != EOF
&& c != '\n')
{
if (cur >= len-1)
{
if (!(buf = realloc(buf, len *= 2)))
if (!(buf = realloc (buf, len *= 2)))
return -1;
}
buf[cur] = c;
......@@ -337,22 +333,22 @@ read_score(f, score)
}
int
read_scores(filename, scores, count)
read_scores (filename, scores, count)
const char *filename;
struct score_entry **scores;
int *count;
{
int readval, scorecount, cursize;
struct score_entry *ret;
FILE *f = fopen(filename, "r");
FILE *f = fopen (filename, "r");
if (!f)
return -1;
scorecount = 0;
cursize = 16;
ret = malloc(sizeof(struct score_entry) * cursize);
ret = malloc (sizeof (struct score_entry) * cursize);
if (!ret)
return -1;
while ((readval = read_score(f, &ret[scorecount])) == 0)
while ((readval = read_score (f, &ret[scorecount])) == 0)
{
/* We encoutered an error */
if (readval < 0)
......@@ -360,7 +356,7 @@ read_scores(filename, scores, count)
scorecount++;
if (scorecount >= cursize)
{
ret = realloc(ret, cursize *= 2);
ret = realloc (ret, cursize *= 2);
if (!ret)
return -1;
}
......@@ -371,7 +367,7 @@ read_scores(filename, scores, count)
}
int
score_compare(a, b)
score_compare (a, b)
const void *a;
const void *b;
{
......@@ -381,7 +377,7 @@ score_compare(a, b)
}
int
score_compare_reverse(a, b)
score_compare_reverse (a, b)
const void *a;
const void *b;
{
......@@ -391,14 +387,15 @@ score_compare_reverse(a, b)
}
int
push_score(scores, count, newscore, username, newdata)
push_score (scores, count, newscore, username, newdata)
struct score_entry **scores;
int *count; int newscore;
char *username;
char *newdata;
{
struct score_entry *newscores = realloc(*scores,
sizeof(struct score_entry) * ((*count) + 1));
struct score_entry *newscores
= realloc (*scores,
sizeof (struct score_entry) * ((*count) + 1));
if (!newscores)
return -1;
newscores[*count].score = newscore;
......@@ -410,49 +407,49 @@ push_score(scores, count, newscore, username, newdata)
}
void
sort_scores(scores, count, reverse)
sort_scores (scores, count, reverse)
struct score_entry *scores;
int count;
int reverse;
{
qsort(scores, count, sizeof(struct score_entry),
qsort (scores, count, sizeof (struct score_entry),
reverse ? score_compare_reverse : score_compare);
}
int
write_scores(filename, scores, count)
write_scores (filename, scores, count)
const char *filename;
const struct score_entry * scores;
int count;
{
FILE *f;
int i;
char *tempfile = malloc(strlen(filename) + strlen(".tempXXXXXX") + 1);
char *tempfile = malloc (strlen (filename) + strlen (".tempXXXXXX") + 1);
if (!tempfile)
return -1;
strcpy(tempfile, filename);
strcat(tempfile, ".tempXXXXXX");
strcpy (tempfile, filename);
strcat (tempfile, ".tempXXXXXX");
#ifdef HAVE_MKSTEMP
if (mkstemp(tempfile) < 0
if (mkstemp (tempfile) < 0
#else
if (mktemp(tempfile) != tempfile
if (mktemp (tempfile) != tempfile
#endif
|| !(f = fopen(tempfile, "w")))
|| !(f = fopen (tempfile, "w")))
return -1;
for (i = 0; i < count; i++)
if (fprintf(f, "%ld %s %s\n", scores[i].score, scores[i].username,
if (fprintf (f, "%ld %s %s\n", scores[i].score, scores[i].username,
scores[i].data) < 0)
return -1;
fclose(f);
if (rename(tempfile, filename) < 0)
fclose (f);
if (rename (tempfile, filename) < 0)
return -1;
if (chmod(filename, 0644) < 0)
if (chmod (filename, 0644) < 0)
return -1;
return 0;
}
int
lock_file(filename, state)
lock_file (filename, state)
const char *filename;
void **state;
{
......@@ -460,19 +457,19 @@ lock_file(filename, state)
struct stat buf;
int attempts = 0;
char *lockext = ".lockfile";
char *lockpath = malloc(strlen(filename) + strlen(lockext) + 60);
char *lockpath = malloc (strlen (filename) + strlen (lockext) + 60);
if (!lockpath)
return -1;
strcpy(lockpath, filename);
strcat(lockpath, lockext);
strcpy (lockpath, filename);
strcat (lockpath, lockext);
*state = lockpath;
trylock:
attempts++;
/* If the lock is over an hour old, delete it. */
if (stat(lockpath, &buf) == 0
&& (difftime(buf.st_ctime, time(NULL) > 60*60)))
unlink(lockpath);
if ((fd = open(lockpath, O_CREAT | O_EXCL, 0600)) < 0)
if (stat (lockpath, &buf) == 0
&& (difftime (buf.st_ctime, time (NULL) > 60*60)))
unlink (lockpath);
if ((fd = open (lockpath, O_CREAT | O_EXCL, 0600)) < 0)
{
if (errno == EEXIST)
{
......@@ -480,28 +477,28 @@ lock_file(filename, state)
lose some scores. */
if (attempts > MAX_ATTEMPTS)
{
unlink(lockpath);
unlink (lockpath);
attempts = 0;
}
sleep((rand() % 2)+1);
sleep ((rand () % 2)+1);
goto trylock;
}
else
return -1;
}
close(fd);
close (fd);
return 0;
}
int
unlock_file(filename, state)
unlock_file (filename, state)
const char *filename;
void *state;
{
char *lockpath = (char *) state;
int ret = unlink(lockpath);
int ret = unlink (lockpath);
int saved_errno = errno;
free(lockpath);
free (lockpath);
errno = saved_errno;
return ret;
}
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