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Arquivotheca.SunOS-4.1.3/ucb/finger.c
seta75D 2e8a93c394 Init
2021-10-11 18:20:23 -03:00

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/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
#ifndef lint
static char sccsid[] = "@(#)finger.c 1.1 92/07/30 SMI"; /* from 5.8 3/13/86 */
#endif not lint
/*
* This is a finger program. It prints out useful information about users
* by digging it up from various system files.
*
* There are three output formats, all of which give login name, teletype
* line number, and login time. The short output format is reminiscent
* of finger on ITS, and gives one line of information per user containing
* in addition to the minimum basic requirements (MBR), the full name of
* the user, his idle time and location. The
* quick style output is UNIX who-like, giving only name, teletype and
* login time. Finally, the long style output give the same information
* as the short (in more legible format), the home directory and shell
* of the user, and, if it exits, a copy of the file .plan in the users
* home directory. Finger may be called with or without a list of people
* to finger -- if no list is given, all the people currently logged in
* are fingered.
*
* The program is validly called by one of the following:
*
* finger {short form list of users}
* finger -l {long form list of users}
* finger -b {briefer long form list of users}
* finger -q {quick list of users}
* finger -i {quick list of users with idle times}
* finger namelist {long format list of specified users}
* finger -s namelist {short format list of specified users}
* finger -w namelist {narrow short format list of specified users}
*
* where 'namelist' is a list of users login names.
* The other options can all be given after one '-', or each can have its
* own '-'. The -f option disables the printing of headers for short and
* quick outputs. The -b option briefens long format outputs. The -p
* option turns off plans for long format outputs.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <utmp.h>
#include <sys/signal.h>
#include <pwd.h>
#include <stdio.h>
#include <lastlog.h>
#include <ctype.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <ttyent.h>
#define ASTERISK '*' /* ignore this in real name */
#define COMMA ',' /* separator in pw_gecos field */
#define COMMAND '-' /* command line flag char */
#define SAMENAME '&' /* repeat login name in real name */
#define TALKABLE 0220 /* tty is writable if this mode */
struct utmp user;
#define NMAX sizeof(user.ut_name)
#define LMAX sizeof(user.ut_line)
#define HMAX sizeof(user.ut_host)
struct person { /* one for each person fingered */
char *name; /* name */
char tty[LMAX+1]; /* null terminated tty line */
char host[HMAX+1]; /* null terminated remote host name */
char *ttyloc; /* location of tty line, if any */
long loginat; /* time of (last) login */
long idletime; /* how long idle (if logged in) */
char *realname; /* pointer to full name */
struct passwd *pwd; /* structure of /etc/passwd stuff */
char loggedin; /* person is logged in */
char writable; /* tty is writable */
char original; /* this is not a duplicate entry */
struct person *link; /* link to next person */
};
char LASTLOG[] = "/usr/adm/lastlog"; /* last login info */
char USERLOG[] = "/etc/utmp"; /* who is logged in */
char PLAN[] = "/.plan"; /* what plan file is */
char PROJ[] = "/.project"; /* what project file */
int unbrief = 1; /* -b option default */
int header = 1; /* -f option default */
int hack = 1; /* -h option default */
int idle = 0; /* -i option default */
int large = 0; /* -l option default */
int match = 1; /* -m option default */
int plan = 1; /* -p option default */
int unquick = 1; /* -q option default */
int small = 0; /* -s option default */
int wide = 1; /* -w option default */
int unshort;
int lf; /* LASTLOG file descriptor */
struct person *person1; /* list of people */
long tloc; /* current time */
struct passwd *pwdcopy();
char *strcpy();
char *malloc();
char *ctime();
main(argc, argv)
int argc;
register char **argv;
{
FILE *fp;
register char *s;
/* parse command line for (optional) arguments */
while (*++argv && **argv == COMMAND)
for (s = *argv + 1; *s; s++)
switch (*s) {
case 'b':
unbrief = 0;
break;
case 'f':
header = 0;
break;
case 'h':
hack = 0;
break;
case 'i':
idle = 1;
unquick = 0;
break;
case 'l':
large = 1;
break;
case 'm':
match = 0;
break;
case 'p':
plan = 0;
break;
case 'q':
unquick = 0;
break;
case 's':
small = 1;
break;
case 'w':
wide = 0;
break;
default:
fprintf(stderr, "Usage: finger [-bfhilmpqsw] [login1 [login2 ...] ]\n");
exit(1);
}
if (unquick || idle)
time(&tloc);
/*
* *argv == 0 means no names given
*/
if (*argv == 0)
doall();
else
donames(argv);
if (person1)
print();
exit(0);
/* NOTREACHED */
}
doall()
{
register struct person *p;
register struct passwd *pw;
int uf;
char name[NMAX + 1];
unshort = large;
if ((uf = open(USERLOG, 0)) < 0) {
fprintf(stderr, "finger: error opening %s\n", USERLOG);
exit(2);
}
if (unquick) {
setpwent();
fwopen();
}
while (read(uf, (char *)&user, sizeof user) == sizeof user) {
if (user.ut_name[0] == 0 || nonuser(user))
continue;
if (person1 == 0)
p = person1 = (struct person *) malloc(sizeof *p);
else {
p->link = (struct person *) malloc(sizeof *p);
p = p->link;
}
bcopy(user.ut_name, name, NMAX);
name[NMAX] = 0;
bcopy(user.ut_line, p->tty, LMAX);
p->tty[LMAX] = 0;
bcopy(user.ut_host, p->host, HMAX);
p->host[HMAX] = 0;
p->loginat = user.ut_time;
p->pwd = 0;
p->loggedin = 1;
if (unquick && (pw = getpwnam(name))) {
p->pwd = pwdcopy(pw);
decode(p);
p->name = p->pwd->pw_name;
} else
p->name = strcpy(malloc(strlen(name) + 1), name);
p->ttyloc = NULL;
if (unquick) getloc(p);
}
if (unquick) {
fwclose();
endpwent();
}
close(uf);
if (person1 == 0) {
printf("No one logged on\n");
return;
}
p->link = 0;
}
getloc(p)
register struct person *p;
{
register int times;
register struct ttyent *ttyentp;
/*
* We assume here that 1) "gettynam" does not use
* an index and 2) the order of entries in the "utmp"
* file is the same as the order of entries in the
* "ttytab" file, so scanning through them in
* parallel is the most efficient way to work.
*/
for (times = 0; times < 2; times++) {
while ((ttyentp = getttyent()) != NULL) {
if (strcmp(p->tty, ttyentp->ty_name) == 0)
goto found;
}
setttyent();
}
return;
found:
if (ttyentp->ty_comment != NULL) {
p->ttyloc = malloc(strlen(ttyentp->ty_comment)+1);
if (p->ttyloc != NULL)
strcpy(p->ttyloc, ttyentp->ty_comment);
}
}
donames(argv)
char **argv;
{
register struct person *p;
register struct passwd *pw;
int uf, count;
/*
* get names from command line and check to see if they're
* logged in
*/
unshort = !small;
count = 0;
for (; *argv != 0; argv++) {
if (netfinger(*argv))
continue;
count++;
if (person1 == 0)
p = person1 = (struct person *) malloc(sizeof *p);
else {
p->link = (struct person *) malloc(sizeof *p);
p = p->link;
}
p->name = *argv;
p->loggedin = 0;
p->original = 1;
p->pwd = 0;
}
if (person1 == 0)
return;
p->link = 0;
/*
* if we are doing it, read /etc/passwd for the useful info
*/
if (unquick) {
setpwent();
if (!match) {
for (p = person1; p != 0; p = p->link)
if (pw = getpwnam(p->name))
p->pwd = pwdcopy(pw);
} else while ((pw = getpwent()) != 0 && count) {
for (p = person1; p != 0; p = p->link) {
if (!p->original)
continue;
if (strcmp(p->name, pw->pw_name) != 0 &&
!matchcmp(pw->pw_gecos, pw->pw_name, p->name))
continue;
if (p->pwd == 0) {
p->pwd = pwdcopy(pw);
if (strcmp(p->name, pw->pw_name) == 0)
count--;
}
else {
struct person *new;
/*
* handle multiple login names, insert
* new "duplicate" entry behind
*/
new = (struct person *)
malloc(sizeof *new);
new->pwd = pwdcopy(pw);
new->name = p->name;
new->original = 1;
new->loggedin = 0;
new->link = p->link;
p->original = 0;
p->link = new;
p = new;
}
}
}
endpwent();
}
/* Now get login information */
if ((uf = open(USERLOG, 0)) < 0) {
fprintf(stderr, "finger: error opening %s\n", USERLOG);
exit(2);
}
while (read(uf, (char *)&user, sizeof user) == sizeof user) {
if (*user.ut_name == 0)
continue;
for (p = person1; p != 0; p = p->link) {
p->ttyloc = NULL;
if (p->loggedin == 2)
continue;
if (strncmp(p->pwd ? p->pwd->pw_name : p->name,
user.ut_name, NMAX) != 0)
continue;
if (p->loggedin == 0) {
bcopy(user.ut_line, p->tty, LMAX);
p->tty[LMAX] = 0;
bcopy(user.ut_host, p->host, HMAX);
p->host[HMAX] = 0;
getloc(p);
p->loginat = user.ut_time;
p->loggedin = 1;
} else { /* p->loggedin == 1 */
struct person *new;
new = (struct person *) malloc(sizeof *new);
new->name = p->name;
bcopy(user.ut_line, new->tty, LMAX);
new->tty[LMAX] = 0;
bcopy(user.ut_host, new->host, HMAX);
new->host[HMAX] = 0;
new->loginat = user.ut_time;
new->pwd = p->pwd;
new->loggedin = 1;
new->original = 0;
new->ttyloc = NULL;
new->link = p->link;
p->loggedin = 2;
p->link = new;
p = new;
}
}
}
close(uf);
if (unquick) {
fwopen();
for (p = person1; p != 0; p = p->link)
decode(p);
fwclose();
}
}
print()
{
register FILE *fp;
register struct person *p;
register char *s;
register c;
/*
* print out what we got
*/
if (header) {
if (unquick) {
if (!unshort)
if (wide)
printf("Login Name TTY Idle When Where\n");
else
printf("Login TTY Idle When Where\n");
} else {
printf("Login TTY When");
if (idle)
printf(" Idle");
putchar('\n');
}
}
for (p = person1; p != 0; p = p->link) {
if (!unquick) {
quickprint(p);
continue;
}
if (!unshort) {
shortprint(p);
continue;
}
personprint(p);
if (p->pwd != 0 && !AlreadyPrinted(p->pwd->pw_uid)) {
AnyMail(p->pwd->pw_name);
if (hack) {
s = malloc(strlen(p->pwd->pw_dir) +
sizeof PROJ);
strcpy(s, p->pwd->pw_dir);
strcat(s, PROJ);
if ((fp = fopen(s, "r")) != 0) {
printf("Project: ");
while ((c = getc(fp)) != EOF) {
if (c == '\n')
break;
if (isprint(c) || isspace(c))
putchar(c);
else
putchar(c ^ 100);
}
fclose(fp);
putchar('\n');
}
free(s);
}
if (plan) {
s = malloc(strlen(p->pwd->pw_dir) +
sizeof PLAN);
strcpy(s, p->pwd->pw_dir);
strcat(s, PLAN);
if ((fp = fopen(s, "r")) == 0)
printf("No Plan.\n");
else {
printf("Plan:\n");
while ((c = getc(fp)) != EOF)
if (isprint(c) || isspace(c))
putchar(c);
else
putchar(c ^ 100);
fclose(fp);
}
free(s);
}
}
if (p->link != 0)
putchar('\n');
}
}
/*
* Duplicate a pwd entry.
* Note: Only the useful things (what the program currently uses) are copied.
*/
struct passwd *
pwdcopy(pfrom)
register struct passwd *pfrom;
{
register struct passwd *pto;
pto = (struct passwd *) malloc(sizeof *pto);
#define savestr(s) strcpy(malloc(strlen(s) + 1), s)
pto->pw_name = savestr(pfrom->pw_name);
pto->pw_uid = pfrom->pw_uid;
pto->pw_gecos = savestr(pfrom->pw_gecos);
pto->pw_dir = savestr(pfrom->pw_dir);
pto->pw_shell = savestr(pfrom->pw_shell);
#undef savestr
return pto;
}
/*
* print out information on quick format giving just name, tty, login time
* and idle time if idle is set.
*/
quickprint(pers)
register struct person *pers;
{
printf("%-*.*s ", NMAX, NMAX, pers->name);
if (pers->loggedin) {
if (idle) {
findidle(pers);
printf("%c%-*s %-16.16s", pers->writable ? ' ' : '*',
LMAX, pers->tty, ctime(&pers->loginat));
ltimeprint(" ", &pers->idletime, "");
} else
printf(" %-*s %-16.16s", LMAX,
pers->tty, ctime(&pers->loginat));
putchar('\n');
} else
printf(" Not Logged In\n");
}
/*
* print out information in short format, giving login name, full name,
* tty, idle time, login time, and host.
*/
shortprint(pers)
register struct person *pers;
{
char *p;
char dialup;
if (pers->pwd == 0) {
printf("%-15s ???\n", pers->name);
return;
}
printf("%-*s", NMAX, pers->pwd->pw_name);
dialup = 0;
if (wide) {
if (pers->realname)
printf(" %-20.20s", pers->realname);
else
printf(" ??? ");
}
putchar(' ');
if (pers->loggedin && !pers->writable)
putchar('*');
else
putchar(' ');
if (*pers->tty) {
if (pers->tty[0] == 't' && pers->tty[1] == 't' &&
pers->tty[2] == 'y') {
if (pers->tty[3] == 'd' && pers->loggedin)
dialup = 1;
printf("%-2.2s ", pers->tty + 3);
} else
printf("%-2.2s ", pers->tty);
} else
printf(" ");
p = ctime(&pers->loginat);
if (pers->loggedin) {
stimeprint(&pers->idletime);
printf(" %3.3s %-5.5s ", p, p + 11);
} else if (pers->loginat == 0)
printf(" < . . . . >");
else if (tloc - pers->loginat >= 180 * 24 * 60 * 60)
printf(" <%-6.6s, %-4.4s>", p + 4, p + 20);
else
printf(" <%-12.12s>", p + 4);
if (*pers->host)
printf(" %-20.20s", pers->host);
else {
if (pers->ttyloc != NULL)
printf(" %-20.20s", pers->ttyloc);
}
putchar('\n');
}
/*
* print out a person in long format giving all possible information.
* directory and shell are inhibited if unbrief is clear.
*/
personprint(pers)
register struct person *pers;
{
if (pers->pwd == 0) {
printf("Login name: %-10s\t\t\tIn real life: ???\n",
pers->name);
return;
}
printf("Login name: %-10s", pers->pwd->pw_name);
if (pers->loggedin && !pers->writable)
printf(" (messages off) ");
else
printf(" ");
if (pers->realname)
printf("In real life: %s", pers->realname);
if (unbrief) {
printf("\nDirectory: %-25s", pers->pwd->pw_dir);
if (*pers->pwd->pw_shell)
printf("\tShell: %-s", pers->pwd->pw_shell);
}
if (pers->loggedin) {
register char *ep = ctime(&pers->loginat);
if (*pers->host) {
printf("\nOn since %15.15s on %s from %s",
&ep[4], pers->tty, pers->host);
ltimeprint("\n", &pers->idletime, " Idle Time");
} else {
printf("\nOn since %15.15s on %-*s",
&ep[4], LMAX, pers->tty);
if (pers->ttyloc != NULL)
printf(" at %s", pers->ttyloc);
ltimeprint("\t", &pers->idletime, " Idle Time");
}
} else if (pers->loginat == 0)
printf("\nNever logged in.");
else if (tloc - pers->loginat > 180 * 24 * 60 * 60) {
register char *ep = ctime(&pers->loginat);
printf("\nLast login %10.10s, %4.4s on %s",
ep, ep+20, pers->tty);
if (*pers->host)
printf(" from %s", pers->host);
} else {
register char *ep = ctime(&pers->loginat);
printf("\nLast login %16.16s on %s", ep, pers->tty);
if (*pers->host)
printf(" from %s", pers->host);
}
putchar('\n');
}
/*
* decode the information in the gecos field of /etc/passwd
*/
decode(pers)
register struct person *pers;
{
char buffer[256];
register char *bp, *gp, *lp;
int alldigits;
int hasspace;
int len;
pers->realname = 0;
if (pers->pwd == 0)
return;
gp = pers->pwd->pw_gecos;
bp = buffer;
if (*gp == ASTERISK)
gp++;
while (*gp && *gp != COMMA) /* name */
if (*gp == SAMENAME) {
lp = pers->pwd->pw_name;
if (islower(*lp))
*bp++ = toupper(*lp++);
while (*bp++ = *lp++)
;
bp--;
gp++;
} else
*bp++ = *gp++;
*bp++ = 0;
if ((len = bp - buffer) > 1)
pers->realname = strcpy(malloc(len), buffer);
if (pers->loggedin)
findidle(pers);
else
findwhen(pers);
}
/*
* find the last log in of a user by checking the LASTLOG file.
* the entry is indexed by the uid, so this can only be done if
* the uid is known (which it isn't in quick mode)
*/
fwopen()
{
if ((lf = open(LASTLOG, 0)) < 0)
fprintf(stderr, "finger: %s open error\n", LASTLOG);
}
findwhen(pers)
register struct person *pers;
{
struct lastlog ll;
int i;
if (lf >= 0) {
lseek(lf, (long)pers->pwd->pw_uid * sizeof ll, 0);
if ((i = read(lf, (char *)&ll, sizeof ll)) == sizeof ll) {
bcopy(ll.ll_line, pers->tty, LMAX);
pers->tty[LMAX] = 0;
bcopy(ll.ll_host, pers->host, HMAX);
pers->host[HMAX] = 0;
pers->loginat = ll.ll_time;
} else {
if (i != 0)
fprintf(stderr, "finger: %s read error\n",
LASTLOG);
pers->tty[0] = 0;
pers->host[0] = 0;
pers->loginat = 0L;
}
} else {
pers->tty[0] = 0;
pers->host[0] = 0;
pers->loginat = 0L;
}
}
fwclose()
{
if (lf >= 0)
close(lf);
}
/*
* find the idle time of a user by doing a stat on /dev/tty??,
* where tty?? has been gotten from USERLOG, supposedly.
*/
findidle(pers)
register struct person *pers;
{
struct stat ttystatus;
#ifdef sun
struct stat inputdevstatus;
#endif
static char buffer[20] = "/dev/";
long t;
long lastinputtime;
#define TTYLEN 5
strcpy(buffer + TTYLEN, pers->tty);
buffer[TTYLEN+LMAX] = 0;
if (stat(buffer, &ttystatus) < 0) {
fprintf(stderr, "finger: Can't stat %s\n", buffer);
exit(4);
}
lastinputtime = ttystatus.st_atime;
#ifdef sun
if (strcmp(pers->tty, "console") == 0) {
/*
* On the console, the user may be running a window system; if
* so, their activity will show up in the last-access times of
* "/dev/kbd" and "/dev/mouse", so take the minimum of the idle
* times on those two devices and "/dev/console" and treat that
* as the idle time.
*/
if (stat("/dev/kbd", &inputdevstatus) == 0) {
if (lastinputtime < inputdevstatus.st_atime)
lastinputtime = inputdevstatus.st_atime;
}
if (stat("/dev/mouse", &inputdevstatus) == 0) {
if (lastinputtime < inputdevstatus.st_atime)
lastinputtime = inputdevstatus.st_atime;
}
}
#endif
time(&t);
if (t < lastinputtime)
pers->idletime = 0L;
else
pers->idletime = t - lastinputtime;
pers->writable = (ttystatus.st_mode & TALKABLE) == TALKABLE;
}
/*
* print idle time in short format; this program always prints 4 characters;
* if the idle time is zero, it prints 4 blanks.
*/
stimeprint(dt)
long *dt;
{
register struct tm *delta;
delta = gmtime(dt);
if (delta->tm_yday == 0)
if (delta->tm_hour == 0)
if (delta->tm_min == 0)
printf(" ");
else
printf(" %2d", delta->tm_min);
else
if (delta->tm_hour >= 10)
printf("%3d:", delta->tm_hour);
else
printf("%1d:%02d",
delta->tm_hour, delta->tm_min);
else
printf("%3dd", delta->tm_yday);
}
/*
* print idle time in long format with care being taken not to pluralize
* 1 minutes or 1 hours or 1 days.
* print "prefix" first.
*/
ltimeprint(before, dt, after)
long *dt;
char *before, *after;
{
register struct tm *delta;
delta = gmtime(dt);
if (delta->tm_yday == 0 && delta->tm_hour == 0 && delta->tm_min == 0 &&
delta->tm_sec <= 10)
return (0);
printf("%s", before);
if (delta->tm_yday >= 10)
printf("%d days", delta->tm_yday);
else if (delta->tm_yday > 0)
printf("%d day%s %d hour%s",
delta->tm_yday, delta->tm_yday == 1 ? "" : "s",
delta->tm_hour, delta->tm_hour == 1 ? "" : "s");
else
if (delta->tm_hour >= 10)
printf("%d hours", delta->tm_hour);
else if (delta->tm_hour > 0)
printf("%d hour%s %d minute%s",
delta->tm_hour, delta->tm_hour == 1 ? "" : "s",
delta->tm_min, delta->tm_min == 1 ? "" : "s");
else
if (delta->tm_min >= 10)
printf("%2d minutes", delta->tm_min);
else if (delta->tm_min == 0)
printf("%2d seconds", delta->tm_sec);
else
printf("%d minute%s %d second%s",
delta->tm_min,
delta->tm_min == 1 ? "" : "s",
delta->tm_sec,
delta->tm_sec == 1 ? "" : "s");
printf("%s", after);
}
matchcmp(gname, login, given)
register char *gname;
char *login;
char *given;
{
char buffer[100];
register char *bp, *lp;
register c;
if (*gname == ASTERISK)
gname++;
lp = 0;
bp = buffer;
for (;;)
switch (c = *gname++) {
case SAMENAME:
for (lp = login; bp < buffer + sizeof buffer
&& (*bp++ = *lp++);)
;
bp--;
break;
case ' ':
case COMMA:
case '\0':
*bp = 0;
if (namecmp(buffer, given))
return (1);
if (c == COMMA || c == 0)
return (0);
bp = buffer;
break;
default:
if (bp < buffer + sizeof buffer)
*bp++ = c;
}
/*NOTREACHED*/
}
namecmp(name1, name2)
register char *name1, *name2;
{
register c1, c2;
for (;;) {
c1 = *name1++;
if (islower(c1))
c1 = toupper(c1);
c2 = *name2++;
if (islower(c2))
c2 = toupper(c2);
if (c1 != c2)
break;
if (c1 == 0)
return (1);
}
if (!c1) {
for (name2--; isdigit(*name2); name2++)
;
if (*name2 == 0)
return (1);
} else if (!c2) {
for (name1--; isdigit(*name1); name1++)
;
if (*name2 == 0)
return (1);
}
return (0);
}
netfinger(name)
char *name;
{
char *host;
char fname[100];
struct hostent *hp;
struct servent *sp;
struct sockaddr_in sin;
int s;
char *rindex();
register FILE *f;
register int c;
register int lastc;
if (name == NULL)
return (0);
host = rindex(name, '@');
if (host == NULL)
return (0);
*host++ = 0;
hp = gethostbyname(host);
if (hp == NULL) {
static struct hostent def;
static struct in_addr defaddr;
static char *alist[1];
static char namebuf[128];
int inet_addr();
defaddr.s_addr = inet_addr(host);
if (defaddr.s_addr == -1) {
printf("unknown host: %s\n", host);
return (1);
}
strcpy(namebuf, host);
def.h_name = namebuf;
# ifdef h_addr
def.h_addr_list = alist;
# endif h_addr
def.h_addr = (char *)&defaddr;
def.h_length = sizeof (struct in_addr);
def.h_addrtype = AF_INET;
def.h_aliases = 0;
hp = &def;
}
printf("[%s] ", hp->h_name);
sin.sin_family = hp->h_addrtype;
bcopy(hp->h_addr, (char *)&sin.sin_addr, hp->h_length);
sin.sin_port = htons(IPPORT_FINGER);
s = socket(hp->h_addrtype, SOCK_STREAM, 0);
if (s < 0) {
fflush(stdout);
perror("socket");
return (1);
}
if (connect(s, (char *)&sin, sizeof (sin)) < 0) {
fflush(stdout);
perror("connect");
close(s);
return (1);
}
printf("\n");
if (large) write(s, "/W ", 3);
write(s, name, strlen(name));
write(s, "\r\n", 2);
f = fdopen(s, "r");
while ((c = getc(f)) != EOF) {
switch(c) {
case 0210:
case 0211:
case 0212:
case 0214:
c -= 0200;
break;
case 0215:
c = '\n';
break;
}
lastc = c;
if (isprint(c) || isspace(c))
putchar(c);
else
putchar(c ^ 100);
}
if (lastc != '\n')
putchar('\n');
(void)fclose(f);
return (1);
}
/*
* AnyMail - takes a username (string pointer thereto), and
* prints on standard output whether there is any unread mail,
* and if so, how old it is. (JCM@Shasta 15 March 80)
*/
#define preamble "/usr/spool/mail/" /* mailboxes are there */
AnyMail(name)
char *name;
{
struct stat buf; /* space for file status buffer */
char *mbxdir = preamble; /* string with path preamble */
char *mbxpath; /* space for entire pathname */
char *ctime(); /* convert longword time to ascii */
char *timestr;
mbxpath = malloc(strlen(name) + strlen(preamble) + 1);
strcpy(mbxpath, mbxdir); /* copy preamble into path name */
strcat(mbxpath, name); /* concatenate user name to path */
if (stat(mbxpath, &buf) == -1 || buf.st_size == 0) {
/* Mailbox is empty or nonexistent */
printf("No unread mail\n");
} else {
if (buf.st_mtime < buf.st_atime) {
/*
* No new mail since the last time the user read it.
*/
printf("Mail last read ");
printf(ctime(&buf.st_atime));
} else if (buf.st_mtime > buf.st_atime) {
/* New mail has definitely arrived since the last time
* mail was read. mtime is the time the most recent
* message arrived; atime is either the time the oldest
* unread message arrived, or the last time the mail
* was read.
*/
printf("New mail received ");
timestr = ctime(&buf.st_mtime); /* time last modified */
timestr[24] = '\0'; /* suppress newline (ugh) */
printf(timestr);
printf(";\n unread since ");
printf(ctime(&buf.st_atime)); /* time last accessed */
} else {
/* There is something in the mailbox, but we can't really
* be sure whether it is mail held there by the user
* or a (single) new message that was placed in a newly
* recreated mailbox, so we punt and call it "unread mail."
*/
printf("Unread mail since ");
printf(ctime(&buf.st_mtime));
}
}
free(mbxpath);
}
/*
* return true iff we've already printed project/plan for this uid;
* if not, enter this uid into table (so this function has a side-effect.)
*/
#define PPMAX 200 /* assume no more than 200 logged-in users */
int PlanPrinted[PPMAX+1];
int PPIndex = 0; /* index of next unused table entry */
AlreadyPrinted(uid)
int uid;
{
int i = 0;
while (i++ < PPIndex) {
if (PlanPrinted[i] == uid)
return(1);
}
if (i < PPMAX) {
PlanPrinted[i] = uid;
PPIndex++;
}
return(0);
}
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