Copyright, help text, whitespace cleanups

This commit is contained in:
Denis Vlasenko 2007-04-01 09:39:03 +00:00
parent 2856dab477
commit ba2fb719b9
4 changed files with 71 additions and 41 deletions

View File

@ -976,7 +976,7 @@ static void colon(char * buf)
}
#if ENABLE_FEATURE_VI_SETOPTS
argp = args;
while (*argp) {
while (*argp) {
if (strncasecmp(argp, "no", 2) == 0)
i = 2; // ":set noautoindent"
setops(argp, "autoindent ", i, "ai", VI_AUTOINDENT);

View File

@ -3326,9 +3326,27 @@ USE_FEATURE_RUN_PARTS_FANCY("\n -l Prints names of all matching files even when
"1\n"
#define tcpsvd_trivial_usage \
"TODO"
"[-hpEvv] [-c n] [-C n:msg] [-b n] [-u user] [-l name] ip port prog..."
/* with not-implemented options: */
/* "[-hpEvv] [-c n] [-C n:msg] [-b n] [-u user] [-l name] [-i dir|-x cdb] [ -t sec] ip port prog..." */
#define tcpsvd_full_usage \
"TODO"
"tcpsvd creates TCP/IP socket, binds it to host:port\n" \
"and listens on in for incoming connections. For each connection\n" \
"it runs prog" \
"\n" \
"\nip IP to listen on. '0' = 'all'" \
"\nport Port to listen on" \
"\nprog [arg] Program to run for each connection" \
"\n-l name Local hostname (else looks up local hostname in DNS)" \
"\n-u user[:group] Change to user/group after bind" \
"\n-c n Handle up to n connections simultaneously" \
"\n-C n[:msg] Allow only up to n connections from the same IP" \
"\n New connections from this IP address are closed" \
"\n immediately. 'msg' is written to the peer before close" \
"\n-h Look up peer's hostname in DNS" \
"\n-b n Allow a backlog of approximately n TCP SYNs" \
"\n-E Do not set up TCP-related environment variables" \
"\n-v Verbose"
#define tftp_trivial_usage \
"[OPTION]... HOST [PORT]"

View File

@ -1,15 +1,20 @@
/*
# /usr/bin/tcpsvd -v 0 1234 true
tcpsvd: info: pid 24916 from 127.0.0.1
tcpsvd: info: start 24916 localhost:127.0.0.1 ::127.0.0.1:47905
tcpsvd: info: pid 24918 from 127.0.0.1
tcpsvd: info: start 24918 localhost:127.0.0.1 ::127.0.0.1:47906
# ./busybox tcpsvd -v 0 1234 true
tcpsvd: info: pid 24924 from 127.0.0.1
tcpsvd: info: start 24924 localhost:1234:127.0.0.1:1234 ::127.0.0.1:47908
tcpsvd: info: pid 24926 from 127.0.0.1
tcpsvd: info: start 24926 localhost:1234:127.0.0.1:1234 ::127.0.0.1:47909
*/
/* Based on ipsvd utilities written by Gerrit Pape <pape@smarden.org>
* which are released into public domain by the author.
* Homepage: http://smarden.sunsite.dk/ipsvd/
*
* Copyright (C) 2007 by Denis Vlasenko.
*
* Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
/* Based on ipsvd ipsvd-0.12.1. This tcpsvd accepts all options
* which are supported by one from ipsvd-0.12.1, but not all are
* functional. See help text at the end of this file for details.
*
* Code inside "#ifdef SSLSVD" is for sslsvd and is currently unused.
* Code inside #if 0" is parts of original tcpsvd which are not implemented
* for busyboxed version.
*/
#include "busybox.h"
#include "ipsvd_perhost.h"
@ -297,15 +302,15 @@ int tcpsvd_main(int argc, char **argv)
if (!max_per_host)
remote_ip = xmalloc_sockaddr2dotted_noport(&sock_adr.sa, sizeof(sock_adr));
/* else it is already done */
remote_port = get_nport(&sock_adr.sa);
remote_port = ntohs(remote_port);
if (verbose) {
pid = getpid();
printf("%s: info: pid %d from %s\n", applet_name, pid, remote_ip);
}
if (need_addresses && (option_mask32 & OPT_h)) {
remote_hostname = xmalloc_sockaddr2host(&sock_adr.sa, sizeof(sock_adr));
if (!remote_hostname) {
@ -313,7 +318,7 @@ int tcpsvd_main(int argc, char **argv)
remote_hostname = (char*)"";
}
}
sockadr_size = sizeof(sock_adr);
/* Errors ignored (I'm not paranoid enough to imagine kernel
* which doesn't know local ip) */
@ -329,7 +334,7 @@ int tcpsvd_main(int argc, char **argv)
bb_error_msg_and_die("cannot look up local hostname for %s", local_ip);
}
}
if (!(option_mask32 & OPT_E)) {
/* setup ucspi env */
xsetenv("PROTO", "TCP");
@ -346,7 +351,7 @@ int tcpsvd_main(int argc, char **argv)
if (cur_per_host > 0)
xsetenv("TCPCONCURRENCY", utoa(cur_per_host));
}
#if 0
if (instructs) {
ac = ipsvd_check(iscdb, &inst, &match, (char*)instructs,
@ -356,11 +361,11 @@ int tcpsvd_main(int argc, char **argv)
} else
ac = IPSVD_DEFAULT;
#endif
if (max_per_host && verbose)
printf("%s: info: concurrency %u %s %u/%u\n",
applet_name, pid, remote_ip, cur_per_host, max_per_host);
if (verbose) {
printf("%s: info: start %u %s:%s :%s:%s:%u\n",
applet_name, pid,
@ -445,6 +450,8 @@ host
host either is a hostname, or a dotted-decimal IP address,
or 0. If host is 0, tcpsvd accepts connections to any local
IP address.
* busybox accepts IPv6 addresses and host:port pairs too
In this case second parameter is ignored
port
tcpsvd accepts connections to host:port. port may be a name
from /etc/services or a number.
@ -453,14 +460,16 @@ prog
tcpsvd normally runs prog, with file descriptor 0 reading from
the network, and file descriptor 1 writing to the network.
By default it also sets up TCP-related environment variables,
see tcp-environ(5)
see tcp-environ(5)
-i dir
read instructions for handling new connections from the instructions
directory dir. See ipsvd-instruct(5) for details.
directory dir. See ipsvd-instruct(5) for details.
* ignored by busyboxed version
-x cdb
read instructions for handling new connections from the constant database
cdb. The constant database normally is created from an instructions
directory by running ipsvd-cdb(8).
directory by running ipsvd-cdb(8).
* ignored by busyboxed version
-t sec
timeout. This option only takes effect if the -i option is given.
While checking the instructions directory, check the time of last access
@ -468,47 +477,50 @@ prog
and remove the file if it wasn't accessed within the last sec seconds;
tcpsvd does not discard or remove a file if the user's write permission
is not set, for those files the timeout is disabled. Default is 0,
which means that the timeout is disabled.
which means that the timeout is disabled.
* ignored by busyboxed version
-l name
local hostname. Do not look up the local hostname in DNS, but use name
as hostname. This option must be set if tcpsvd listens on port 53
to avoid loops.
to avoid loops.
-u user[:group]
drop permissions. Switch user ID to user's UID, and group ID to user's
primary GID after creating and binding to the socket. If user is followed
by a colon and a group name, the group ID is switched to the GID of group
instead. All supplementary groups are removed.
instead. All supplementary groups are removed.
-c n
concurrency. Handle up to n connections simultaneously. Default is 30.
If there are n connections active, tcpsvd defers acceptance of a new
connection until an active connection is closed.
connection until an active connection is closed.
-C n[:msg]
per host concurrency. Allow only up to n connections from the same IP
address simultaneously. If there are n active connections from one IP
address simultaneously. If there are n active connections from one IP
address, new incoming connections from this IP address are closed
immediately. If n is followed by :msg, the message msg is written
immediately. If n is followed by :msg, the message msg is written
to the client if possible, before closing the connection. By default
msg is empty. See ipsvd-instruct(5) for supported escape sequences in msg.
For each accepted connection, the current per host concurrency is
available through the environment variable TCPCONCURRENCY. n and msg
can be overwritten by ipsvd(7) instructions, see ipsvd-instruct(5).
By default tcpsvd doesn't keep track of connections.
By default tcpsvd doesn't keep track of connections.
-h
Look up the client's hostname in DNS.
Look up the client's hostname in DNS.
-p
paranoid. After looking up the client's hostname in DNS, look up the IP
addresses in DNS for that hostname, and forget about the hostname
if none of the addresses match the client's IP address. You should
set this option if you use hostname based instructions. The -p option
implies the -h option.
implies the -h option.
* ignored by busyboxed version
-b n
backlog. Allow a backlog of approximately n TCP SYNs. On some systems n
is silently limited. Default is 20.
is silently limited. Default is 20.
-E
no special environment. Do not set up TCP-related environment variables.
no special environment. Do not set up TCP-related environment variables.
-v
verbose. Print verbose messsages to standard output.
verbose. Print verbose messsages to standard output.
-vv
more verbose. Print more verbose messages to standard output.
more verbose. Print more verbose messages to standard output.
* no difference between -v and -vv in busyboxed version
*/

View File

@ -23,14 +23,14 @@ int dumpleases_main(int argc, char *argv[])
OPT_r = 0x2, // -r
OPT_f = 0x4, // -f
};
#if ENABLE_GETOPT_LONG
#if ENABLE_GETOPT_LONG
static const struct option options[] = {
{ "absolute", no_argument, 0, 'a' },
{ "remaining", no_argument, 0, 'r' },
{ "file", required_argument, 0, 'f' },
{ NULL, 0, 0, 0 }
};
applet_long_options = options;
#endif
opt_complementary = "=0:?:a--r:r--a";