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Add finger demo to redbean and fix regression

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This change fixes a regression in unix.connect() caused by the recent
addition of UNIX domain sockets. The BSD finger command has been added
to third_party for fun and profit. A new demo has been added to redbean
showing how a protocol as simple as finger can be implemented.
This commit is contained in:
Justine Tunney 2022-06-23 03:39:44 -07:00
parent 2415afab0e
commit 17cbe73411
34 changed files with 2454 additions and 29 deletions
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121
third_party/finger/finger.h vendored Normal file
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// clang-format off
/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Tony Nardo of the Johns Hopkins University/Applied Physics Lab.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)finger.h 5.5 (Berkeley) 6/1/90
* $Id: finger.h,v 1.7 1999/09/14 10:51:11 dholland Exp $
*/
#include "third_party/musl/passwd.h"
#include "libc/runtime/utmp.h"
#include "libc/calls/weirdtypes.h"
/*
* All unique persons are linked in a list headed by "head" and linkd
* by the "next" field, as well as kept in a hash table.
*/
typedef struct person {
struct person *next; /* link to next person */
struct person *hlink; /* link to next person in hash bucket */
uid_t uid; /* user id */
char *dir; /* user's home directory */
char *homephone; /* pointer to home phone no. */
char *name; /* login name */
char *office; /* pointer to office name */
char *officephone; /* pointer to office phone no. */
char *realname; /* pointer to full name */
char *shell; /* user's shell */
time_t mailread; /* last time mail was read */
time_t mailrecv; /* last time mail was read */
struct where *whead, *wtail; /* list of where he is or has been */
} PERSON;
enum status { LASTLOG, LOGGEDIN };
typedef struct where {
struct where *next; /* next place he is or has been */
enum status info; /* type/status of request */
short writable; /* tty is writable */
time_t loginat; /* time of (last) login */
time_t idletime; /* how long idle (if logged in) */
char tty[UT_LINESIZE+1]; /* null terminated tty line */
char host[UT_HOSTSIZE+1]; /* null terminated remote host name */
} WHERE;
extern PERSON *phead, *ptail; /* the linked list of all people */
extern int entries; /* number of people */
#define TBUFLEN 1024
extern char tbuf[TBUFLEN]; /* temp buffer for anybody */
extern time_t now;
extern int lflag, pplan;
struct utmp;
PERSON *enter_person(struct passwd *);
PERSON *find_person(const char *name);
PERSON *palloc(void);
WHERE *walloc(PERSON *);
void lflag_print(void);
void sflag_print(void);
void enter_where(struct utmp *ut, PERSON *pn);
void enter_lastlog(PERSON *pn);
int match(struct passwd *pw, const char *user);
void netfinger(const char *name);
const char *prphone(const char *num);
#ifndef DAYSPERNYEAR
#define DAYSPERNYEAR 365
#endif
#ifndef SECSPERDAY
#define SECSPERDAY (60 * 60 * 24)
#endif
/* turn on crnl translation on output */
void set_crmode(void);
/* Display, masking control characters and possibly doing crnl translation */
void xputc(int ch);
void xputs(const char *buf);
int xprintf(const char *fmt, ...);
/* Send to stderr, possibly doing crnl translation */
int eprintf(const char *fmt, ...);
/* terminal inquiries */
int is8bit(void);
int getscreenwidth(void);