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Add a debug-statement from NetBSD, and then rework all debug-statements

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so the program compiles without errors or warnings when DEBUG is defined on
sparc64 with 64-bit time_t's.  Also have debug statements include the year
when printing records from a different year than 'now'.  Also print out a
special timestamp in debug statements when ut_time==0.

Reviewed by:	freebsd-sparc, bde
MFC after:	2 weeks
This commit is contained in:
Garance A Drosehn 2004-03-08 19:20:06 +00:00
parent c65eeb736e
commit b5a06c256e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=126750
1 changed files with 82 additions and 9 deletions
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91
usr.sbin/ac/ac.c
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@ -83,6 +83,9 @@ static int Debug = 0;
int main(int, char **);
int ac(FILE *);
struct tty_list *add_tty(char *);
#ifdef DEBUG
const char *debug_pfx(const struct utmp *, const struct utmp *);
#endif
int do_tty(char *);
FILE *file(const char *);
struct utmp_list *log_in(struct utmp_list *, struct utmp *);
@ -208,6 +211,72 @@ update_user(struct user_list *head, char *name, time_t secs)
return up;
}
#ifdef DEBUG
/*
* Create a string which is the standard prefix for a debug line. It
* includes a timestamp (perhaps with year), device-name, and user-name.
*/
const char *
debug_pfx(const struct utmp *event_up, const struct utmp *userinf_up)
{
static char str_result[40+UT_LINESIZE+UT_NAMESIZE];
static char thisyear[5];
size_t maxcopy;
time_t ut_timecopy;
if (thisyear[0] == '\0') {
/* Figure out what "this year" is. */
time(&ut_timecopy);
strlcpy(str_result, ctime(&ut_timecopy), sizeof(str_result));
strlcpy(thisyear, &str_result[20], sizeof(thisyear));
}
if (event_up->ut_time == 0)
strlcpy(str_result, "*ZeroTime* --:--:-- ", sizeof(str_result));
else {
/*
* The type of utmp.ut_time is not necessary type time_t, as
* it is explicitly defined as type int32_t. Copy the value
* for platforms where sizeof(time_t) != sizeof(int32_t).
*/
ut_timecopy = _time32_to_time(event_up->ut_time);
strlcpy(str_result, ctime(&ut_timecopy), sizeof(str_result));
/*
* Include the year, if it is not the same year as "now".
*/
if (strncmp(&str_result[20], thisyear, 4) == 0)
str_result[20] = '\0';
else {
str_result[24] = ' '; /* Replace a '\n' */
str_result[25] = '\0';
}
}
if (userinf_up->ut_line[0] == '\0')
strlcat(str_result, "NoDev", sizeof(str_result));
else {
/* ut_line is not necessarily null-terminated. */
maxcopy = strlen(str_result) + UT_LINESIZE + 1;
if (maxcopy > sizeof(str_result))
maxcopy = sizeof(str_result);
strlcat(str_result, userinf_up->ut_line, maxcopy);
}
strlcat(str_result, ": ", sizeof(str_result));
if (userinf_up->ut_name[0] == '\0')
strlcat(str_result, "LogOff", sizeof(str_result));
else {
/* ut_name is not necessarily null-terminated. */
maxcopy = strlen(str_result) + UT_NAMESIZE + 1;
if (maxcopy > sizeof(str_result))
maxcopy = sizeof(str_result);
strlcat(str_result, userinf_up->ut_name, maxcopy);
}
return (str_result);
}
#endif
int
main(int argc, char *argv[])
{
@ -346,11 +415,10 @@ log_out(struct utmp_list *head, struct utmp *up)
Users = update_user(Users, lp->usr.ut_name, secs);
#ifdef DEBUG
if (Debug)
printf("%-.*s %-.*s: %-.*s logged out (%2d:%02d:%02d)\n",
19, ctime(&up->ut_time),
sizeof (lp->usr.ut_line), lp->usr.ut_line,
sizeof (lp->usr.ut_name), lp->usr.ut_name,
secs / 3600, (secs % 3600) / 60, secs % 60);
printf("%s logged out (%2d:%02d:%02d)\n",
debug_pfx(up, &lp->usr), (int)(secs / 3600),
(int)((secs % 3600) / 60),
(int)(secs % 60));
#endif
/*
* now lose it
@ -426,11 +494,10 @@ log_in(struct utmp_list *head, struct utmp *up)
memmove((char *)&lp->usr, (char *)up, sizeof (struct utmp));
#ifdef DEBUG
if (Debug) {
printf("%-.*s %-.*s: %-.*s logged in", 19,
ctime(&lp->usr.ut_time), sizeof (up->ut_line),
up->ut_line, sizeof (up->ut_name), up->ut_name);
printf("%s logged in", debug_pfx(&lp->usr, up));
if (*up->ut_host)
printf(" (%-.*s)", sizeof (up->ut_host), up->ut_host);
printf(" (%-.*s)", (int)sizeof(up->ut_host),
up->ut_host);
putchar('\n');
}
#endif
@ -491,6 +558,12 @@ ac(FILE *fp)
strchr("pqrsPQRS", usr.ut_line[3]) != 0 ||
*usr.ut_host != '\0')
head = log_in(head, &usr);
#ifdef DEBUG
else if (Debug > 1)
/* Things such as 'screen' sessions. */
printf("%s - record ignored\n",
debug_pfx(&usr, &usr));
#endif
} else
head = log_out(head, &usr);
break;