FM / sockets

/usr/lib64/python2.7/Demo/sockets

Name	Size	Mode	Actions
broadcast.py	283	0644	edit dl rm
broadcast.pyc	547	0644	edit dl rm
broadcast.pyo	547	0644	edit dl rm
echosvr.py	738	0755	edit dl rm
echosvr.pyc	827	0644	edit dl rm
echosvr.pyo	827	0644	edit dl rm
finger.py	1259	0755	edit dl rm
finger.pyc	1162	0644	edit dl rm
finger.pyo	1162	0644	edit dl rm
ftp.py	3928	0644	edit dl rm
ftp.pyc	2954	0644	edit dl rm
ftp.pyo	2954	0644	edit dl rm
gopher.py	9783	0755	edit dl rm
gopher.pyc	10323	0644	edit dl rm
gopher.pyo	10323	0644	edit dl rm
mcast.py	2214	0755	edit dl rm
mcast.pyc	2169	0644	edit dl rm
mcast.pyo	2169	0644	edit dl rm
radio.py	287	0644	edit dl rm
radio.pyc	471	0644	edit dl rm
radio.pyo	471	0644	edit dl rm
README	628	0644	edit dl rm
rpython.py	713	0755	edit dl rm
rpython.pyc	982	0644	edit dl rm
rpython.pyo	982	0644	edit dl rm
rpythond.py	1213	0755	edit dl rm
rpythond.pyc	1335	0644	edit dl rm
rpythond.pyo	1335	0644	edit dl rm
telnet.py	3009	0755	edit dl rm
telnet.pyc	2149	0644	edit dl rm
telnet.pyo	2149	0644	edit dl rm
throughput.py	2084	0755	edit dl rm
throughput.pyc	2473	0644	edit dl rm
throughput.pyo	2473	0644	edit dl rm
udpecho.py	1467	0755	edit dl rm
udpecho.pyc	2027	0644	edit dl rm
udpecho.pyo	2027	0644	edit dl rm
unicast.py	230	0644	edit dl rm
unicast.pyc	456	0644	edit dl rm
unicast.pyo	456	0644	edit dl rm
unixclient.py	232	0644	edit dl rm
unixclient.pyc	424	0644	edit dl rm
unixclient.pyo	424	0644	edit dl rm
unixserver.py	414	0644	edit dl rm
unixserver.pyc	593	0644	edit dl rm
unixserver.pyo	593	0644	edit dl rm

Edit: /usr/lib64/python2.7/Demo/sockets/gopher.py (9783B)

#! /usr/bin/python2.7

# A simple gopher client.
#
# Usage: gopher [ [selector] host [port] ]

import string
import sys
import os
import socket

# Default selector, host and port
DEF_SELECTOR = ''
DEF_HOST     = 'gopher.micro.umn.edu'
DEF_PORT     = 70

# Recognized file types
T_TEXTFILE  = '0'
T_MENU      = '1'
T_CSO       = '2'
T_ERROR     = '3'
T_BINHEX    = '4'
T_DOS       = '5'
T_UUENCODE  = '6'
T_SEARCH    = '7'
T_TELNET    = '8'
T_BINARY    = '9'
T_REDUNDANT = '+'
T_SOUND     = 's'

# Dictionary mapping types to strings
typename = {'0': '<TEXT>', '1': '<DIR>', '2': '<CSO>', '3': '<ERROR>', \
        '4': '<BINHEX>', '5': '<DOS>', '6': '<UUENCODE>', '7': '<SEARCH>', \
        '8': '<TELNET>', '9': '<BINARY>', '+': '<REDUNDANT>', 's': '<SOUND>'}

# Oft-used characters and strings
CRLF = '\r\n'
TAB = '\t'

# Open a TCP connection to a given host and port
def open_socket(host, port):
    if not port:
        port = DEF_PORT
    elif type(port) == type(''):
        port = string.atoi(port)
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((host, port))
    return s

# Send a selector to a given host and port, return a file with the reply
def send_request(selector, host, port):
    s = open_socket(host, port)
    s.send(selector + CRLF)
    s.shutdown(1)
    return s.makefile('r')

# Get a menu in the form of a list of entries
def get_menu(selector, host, port):
    f = send_request(selector, host, port)
    list = []
    while 1:
        line = f.readline()
        if not line:
            print '(Unexpected EOF from server)'
            break
        if line[-2:] == CRLF:
            line = line[:-2]
        elif line[-1:] in CRLF:
            line = line[:-1]
        if line == '.':
            break
        if not line:
            print '(Empty line from server)'
            continue
        typechar = line[0]
        parts = string.splitfields(line[1:], TAB)
        if len(parts) < 4:
            print '(Bad line from server: %r)' % (line,)
            continue
        if len(parts) > 4:
            print '(Extra info from server: %r)' % (parts[4:],)
        parts.insert(0, typechar)
        list.append(parts)
    f.close()
    return list

# Get a text file as a list of lines, with trailing CRLF stripped
def get_textfile(selector, host, port):
    list = []
    get_alt_textfile(selector, host, port, list.append)
    return list

# Get a text file and pass each line to a function, with trailing CRLF stripped
def get_alt_textfile(selector, host, port, func):
    f = send_request(selector, host, port)
    while 1:
        line = f.readline()
        if not line:
            print '(Unexpected EOF from server)'
            break
        if line[-2:] == CRLF:
            line = line[:-2]
        elif line[-1:] in CRLF:
            line = line[:-1]
        if line == '.':
            break
        if line[:2] == '..':
            line = line[1:]
        func(line)
    f.close()

# Get a binary file as one solid data block
def get_binary(selector, host, port):
    f = send_request(selector, host, port)
    data = f.read()
    f.close()
    return data

# Get a binary file and pass each block to a function
def get_alt_binary(selector, host, port, func, blocksize):
    f = send_request(selector, host, port)
    while 1:
        data = f.read(blocksize)
        if not data:
            break
        func(data)

# A *very* simple interactive browser

# Browser main command, has default arguments
def browser(*args):
    selector = DEF_SELECTOR
    host = DEF_HOST
    port = DEF_PORT
    n = len(args)
    if n > 0 and args[0]:
        selector = args[0]
    if n > 1 and args[1]:
        host = args[1]
    if n > 2 and args[2]:
        port = args[2]
    if n > 3:
        raise RuntimeError, 'too many args'
    try:
        browse_menu(selector, host, port)
    except socket.error, msg:
        print 'Socket error:', msg
        sys.exit(1)
    except KeyboardInterrupt:
        print '\n[Goodbye]'

# Browse a menu
def browse_menu(selector, host, port):
    list = get_menu(selector, host, port)
    while 1:
        print '----- MENU -----'
        print 'Selector:', repr(selector)
        print 'Host:', host, ' Port:', port
        print
        for i in range(len(list)):
            item = list[i]
            typechar, description = item[0], item[1]
            print string.rjust(repr(i+1), 3) + ':', description,
            if typename.has_key(typechar):
                print typename[typechar]
            else:
                print '<TYPE=' + repr(typechar) + '>'
        print
        while 1:
            try:
                str = raw_input('Choice [CR == up a level]: ')
            except EOFError:
                print
                return
            if not str:
                return
            try:
                choice = string.atoi(str)
            except string.atoi_error:
                print 'Choice must be a number; try again:'
                continue
            if not 0 < choice <= len(list):
                print 'Choice out of range; try again:'
                continue
            break
        item = list[choice-1]
        typechar = item[0]
        [i_selector, i_host, i_port] = item[2:5]
        if typebrowser.has_key(typechar):
            browserfunc = typebrowser[typechar]
            try:
                browserfunc(i_selector, i_host, i_port)
            except (IOError, socket.error):
                print '***', sys.exc_type, ':', sys.exc_value
        else:
            print 'Unsupported object type'

# Browse a text file
def browse_textfile(selector, host, port):
    x = None
    try:
        p = os.popen('${PAGER-more}', 'w')
        x = SaveLines(p)
        get_alt_textfile(selector, host, port, x.writeln)
    except IOError, msg:
        print 'IOError:', msg
    if x:
        x.close()
    f = open_savefile()
    if not f:
        return
    x = SaveLines(f)
    try:
        get_alt_textfile(selector, host, port, x.writeln)
        print 'Done.'
    except IOError, msg:
        print 'IOError:', msg
    x.close()

# Browse a search index
def browse_search(selector, host, port):
    while 1:
        print '----- SEARCH -----'
        print 'Selector:', repr(selector)
        print 'Host:', host, ' Port:', port
        print
        try:
            query = raw_input('Query [CR == up a level]: ')
        except EOFError:
            print
            break
        query = string.strip(query)
        if not query:
            break
        if '\t' in query:
            print 'Sorry, queries cannot contain tabs'
            continue
        browse_menu(selector + TAB + query, host, port)

# "Browse" telnet-based information, i.e. open a telnet session
def browse_telnet(selector, host, port):
    if selector:
        print 'Log in as', repr(selector)
    if type(port) <> type(''):
        port = repr(port)
    sts = os.system('set -x; exec telnet ' + host + ' ' + port)
    if sts:
        print 'Exit status:', sts

# "Browse" a binary file, i.e. save it to a file
def browse_binary(selector, host, port):
    f = open_savefile()
    if not f:
        return
    x = SaveWithProgress(f)
    get_alt_binary(selector, host, port, x.write, 8*1024)
    x.close()

# "Browse" a sound file, i.e. play it or save it
def browse_sound(selector, host, port):
    browse_binary(selector, host, port)

# Dictionary mapping types to browser functions
typebrowser = {'0': browse_textfile, '1': browse_menu, \
        '4': browse_binary, '5': browse_binary, '6': browse_textfile, \
        '7': browse_search, \
        '8': browse_telnet, '9': browse_binary, 's': browse_sound}

# Class used to save lines, appending a newline to each line
class SaveLines:
    def __init__(self, f):
        self.f = f
    def writeln(self, line):
        self.f.write(line + '\n')
    def close(self):
        sts = self.f.close()
        if sts:
            print 'Exit status:', sts

# Class used to save data while showing progress
class SaveWithProgress:
    def __init__(self, f):
        self.f = f
    def write(self, data):
        sys.stdout.write('#')
        sys.stdout.flush()
        self.f.write(data)
    def close(self):
        print
        sts = self.f.close()
        if sts:
            print 'Exit status:', sts

# Ask for and open a save file, or return None if not to save
def open_savefile():
    try:
        savefile = raw_input( \
    'Save as file [CR == don\'t save; |pipeline or ~user/... OK]: ')
    except EOFError:
        print
        return None
    savefile = string.strip(savefile)
    if not savefile:
        return None
    if savefile[0] == '|':
        cmd = string.strip(savefile[1:])
        try:
            p = os.popen(cmd, 'w')
        except IOError, msg:
            print repr(cmd), ':', msg
            return None
        print 'Piping through', repr(cmd), '...'
        return p
    if savefile[0] == '~':
        savefile = os.path.expanduser(savefile)
    try:
        f = open(savefile, 'w')
    except IOError, msg:
        print repr(savefile), ':', msg
        return None
    print 'Saving to', repr(savefile), '...'
    return f

# Test program
def test():
    if sys.argv[4:]:
        print 'usage: gopher [ [selector] host [port] ]'
        sys.exit(2)
    elif sys.argv[3:]:
        browser(sys.argv[1], sys.argv[2], sys.argv[3])
    elif sys.argv[2:]:
        try:
            port = string.atoi(sys.argv[2])
            selector = ''
            host = sys.argv[1]
        except string.atoi_error:
            selector = sys.argv[1]
            host = sys.argv[2]
            port = ''
        browser(selector, host, port)
    elif sys.argv[1:]:
        browser('', sys.argv[1])
    else:
        browser()

# Call the test program as a main program
test()

cmd: