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pysvr.pyo 0000644 00000007456 15204241217 0006472 0 ustar 00 � A fc @ s� d Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d Z d � Z d d � Z d � Z d � Z d � Z d � Z d d l m Z e � d S( sI A multi-threaded telnet-like server that gives a Python prompt. This is really a prototype for the same thing in C. Usage: pysvr.py [port] For security reasons, it only accepts requests from the current host. This can still be insecure, but restricts violations from people who can log in on your machine. Use with caution! i����Ni� c C s� yD t j t j d d � \ } } t | � d k rC t j d � n Wn t j k rf } t | � n Xx | D] \ } } qn W| r� y t j | d � } Wq� t k r� } t | � q� Xn t } t | � d S( Ni t s Too many arguments.i ( t getoptt syst argvt lent errort usaget stringt atoit ValueErrort PORTt main_thread( t optst argst msgt ot at port( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyt main s c C s3 t j t _ | r | GHn d Gt Gt j d � d S( Ns i ( R t stderrt stdoutt __doc__t exit( R ( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR % s c C s� t j t j t j � } | j d | f � | j d � d G| Gd GHxm | j � \ } } | d | j � d k r� | j � d G| d Gd GHqH n t j t | | f � ~ ~ qH Wd S( NR i s Listening on ports ...i s' Refusing connection from non-local hostt .( t sockett AF_INETt SOCK_STREAMt bindt listent acceptt getsocknamet closet threadt start_new_threadt service_thread( R t sockt connt addr( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR , s c C sl | \ } } d t t j � � | f G| j d � } | j d d � } t | | � d t t j � � Gd S( Ns" Thread %s has connection from %s. t rt wi s Thread %s is done. ( t strR t get_identt makefilet run_interpreter( R$ R% t caddrt cportt stdinR ( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR" : s c C s| i } y t t j � Wn d t _ n Xd } x8| j t j � | j � } | d d k rh d } n | rz | rz Pn | d d k r� | d d } n | | } y t | � } Wn5 t k r� } d } t j t | d d | �q3 n X| s� q3 n d } y t | | | | � Wq3 t k rf} | rby t | � } Wn d } n X| j d | � n Pq3 Xq3 W| j d � d S( Ns >>> R i s ��i����s s t files Exit %s s Goodbye. ( R( R t ps1t writet readlinet compile_commandt SyntaxErrort tracebackt print_exceptiont Nonet run_commandt SystemExit( R. R t globalst sourcet linet codet errt how( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR+ C sH c B s� e j e j e j f } z� | e _ e _ | e _ y | | UWnl e k rk } e | e j � d � nD e j � \ } } } | r� | j } n e j | | | � ~ n XWd | \ e _ e _ e _ Xd S( Ni ( R R. R R R9 t exc_infot tb_nextR5 R6 ( R= R. R R: t saveR? t typet valuet tb( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR8 i s ( R3 ( R R t osR R R R R5 R R R7 R R R" R+ R8 R= R3 ( ( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyt <module> s T & pysvr.py 0000755 00000006545 15204241217 0006314 0 ustar 00 #! /usr/bin/python2.7 """A multi-threaded telnet-like server that gives a Python prompt. This is really a prototype for the same thing in C. Usage: pysvr.py [port] For security reasons, it only accepts requests from the current host. This can still be insecure, but restricts violations from people who can log in on your machine. Use with caution! """ import sys, os, string, getopt, thread, socket, traceback PORT = 4000 # Default port def main(): try: opts, args = getopt.getopt(sys.argv[1:], "") if len(args) > 1: raise getopt.error, "Too many arguments." except getopt.error, msg: usage(msg) for o, a in opts: pass if args: try: port = string.atoi(args[0]) except ValueError, msg: usage(msg) else: port = PORT main_thread(port) def usage(msg=None): sys.stdout = sys.stderr if msg: print msg print "\n", __doc__, sys.exit(2) def main_thread(port): sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.bind(("", port)) sock.listen(5) print "Listening on port", port, "..." while 1: (conn, addr) = sock.accept() if addr[0] != conn.getsockname()[0]: conn.close() print "Refusing connection from non-local host", addr[0], "." continue thread.start_new_thread(service_thread, (conn, addr)) del conn, addr def service_thread(conn, addr): (caddr, cport) = addr print "Thread %s has connection from %s.\n" % (str(thread.get_ident()), caddr), stdin = conn.makefile("r") stdout = conn.makefile("w", 0) run_interpreter(stdin, stdout) print "Thread %s is done.\n" % str(thread.get_ident()), def run_interpreter(stdin, stdout): globals = {} try: str(sys.ps1) except: sys.ps1 = ">>> " source = "" while 1: stdout.write(sys.ps1) line = stdin.readline() if line[:2] == '\377\354': line = "" if not line and not source: break if line[-2:] == '\r\n': line = line[:-2] + '\n' source = source + line try: code = compile_command(source) except SyntaxError, err: source = "" traceback.print_exception(SyntaxError, err, None, file=stdout) continue if not code: continue source = "" try: run_command(code, stdin, stdout, globals) except SystemExit, how: if how: try: how = str(how) except: how = "" stdout.write("Exit %s\n" % how) break stdout.write("\nGoodbye.\n") def run_command(code, stdin, stdout, globals): save = sys.stdin, sys.stdout, sys.stderr try: sys.stdout = sys.stderr = stdout sys.stdin = stdin try: exec code in globals except SystemExit, how: raise SystemExit, how, sys.exc_info()[2] except: type, value, tb = sys.exc_info() if tb: tb = tb.tb_next traceback.print_exception(type, value, tb) del tb finally: sys.stdin, sys.stdout, sys.stderr = save from code import compile_command main() README 0000644 00000000505 15204241217 0005422 0 ustar 00 This is an example of a multi-threaded C application embedding a Python interpreter. The particular application is a multi-threaded telnet-like server that provides you with a Python prompt (instead of a shell prompt). The file pysvr.py is a prototype in Python. THIS APPLICATION IS NOT SECURE -- ONLY USE IT FOR TESTING! pysvr.pyc 0000644 00000007456 15204241217 0006456 0 ustar 00 � A fc @ s� d Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d Z d � Z d d � Z d � Z d � Z d � Z d � Z d d l m Z e � d S( sI A multi-threaded telnet-like server that gives a Python prompt. This is really a prototype for the same thing in C. Usage: pysvr.py [port] For security reasons, it only accepts requests from the current host. This can still be insecure, but restricts violations from people who can log in on your machine. Use with caution! i����Ni� c C s� yD t j t j d d � \ } } t | � d k rC t j d � n Wn t j k rf } t | � n Xx | D] \ } } qn W| r� y t j | d � } Wq� t k r� } t | � q� Xn t } t | � d S( Ni t s Too many arguments.i ( t getoptt syst argvt lent errort usaget stringt atoit ValueErrort PORTt main_thread( t optst argst msgt ot at port( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyt main s c C s3 t j t _ | r | GHn d Gt Gt j d � d S( Ns i ( R t stderrt stdoutt __doc__t exit( R ( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR % s c C s� t j t j t j � } | j d | f � | j d � d G| Gd GHxm | j � \ } } | d | j � d k r� | j � d G| d Gd GHqH n t j t | | f � ~ ~ qH Wd S( NR i s Listening on ports ...i s' Refusing connection from non-local hostt .( t sockett AF_INETt SOCK_STREAMt bindt listent acceptt getsocknamet closet threadt start_new_threadt service_thread( R t sockt connt addr( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR , s c C sl | \ } } d t t j � � | f G| j d � } | j d d � } t | | � d t t j � � Gd S( Ns" Thread %s has connection from %s. t rt wi s Thread %s is done. ( t strR t get_identt makefilet run_interpreter( R$ R% t caddrt cportt stdinR ( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR" : s c C s| i } y t t j � Wn d t _ n Xd } x8| j t j � | j � } | d d k rh d } n | rz | rz Pn | d d k r� | d d } n | | } y t | � } Wn5 t k r� } d } t j t | d d | �q3 n X| s� q3 n d } y t | | | | � Wq3 t k rf} | rby t | � } Wn d } n X| j d | � n Pq3 Xq3 W| j d � d S( Ns >>> R i s ��i����s s t files Exit %s s Goodbye. ( R( R t ps1t writet readlinet compile_commandt SyntaxErrort tracebackt print_exceptiont Nonet run_commandt SystemExit( R. R t globalst sourcet linet codet errt how( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR+ C sH c B s� e j e j e j f } z� | e _ e _ | e _ y | | UWnl e k rk } e | e j � d � nD e j � \ } } } | r� | j } n e j | | | � ~ n XWd | \ e _ e _ e _ Xd S( Ni ( R R. R R R9 t exc_infot tb_nextR5 R6 ( R= R. R R: t saveR? t typet valuet tb( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyR8 i s ( R3 ( R R t osR R R R R5 R R R7 R R R" R+ R8 R= R3 ( ( ( s( /usr/lib64/python2.7/Demo/pysvr/pysvr.pyt <module> s T & pysvr.c 0000644 00000020353 15204241217 0006074 0 ustar 00 /* A multi-threaded telnet-like server that gives a Python prompt. Usage: pysvr [port] For security reasons, it only accepts requests from the current host. This can still be insecure, but restricts violations from people who can log in on your machine. Use with caution! */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> #include <errno.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <pthread.h> #include <getopt.h> /* XXX Umpfh. Python.h defines a typedef destructor, which conflicts with pthread.h. So Python.h must be included after pthread.h. */ #include "Python.h" extern int Py_VerboseFlag; #ifndef PORT #define PORT 4000 #endif struct workorder { int conn; struct sockaddr_in addr; }; /* Forward */ static void init_python(void); static void usage(void); static void oprogname(void); static void main_thread(int); static void create_thread(int, struct sockaddr_in *); static void *service_thread(struct workorder *); static void run_interpreter(FILE *, FILE *); static int run_command(char *, PyObject *); static void ps(void); static char *progname = "pysvr"; static PyThreadState *gtstate; main(int argc, char **argv) { int port = PORT; int c; if (argc > 0 && argv[0] != NULL && argv[0][0] != '\0') progname = argv[0]; while ((c = getopt(argc, argv, "v")) != EOF) { switch (c) { case 'v': Py_VerboseFlag++; break; default: usage(); } } if (optind < argc) { if (optind+1 < argc) { oprogname(); fprintf(stderr, "too many arguments\n"); usage(); } port = atoi(argv[optind]); if (port <= 0) { fprintf(stderr, "bad port (%s)\n", argv[optind]); usage(); } } main_thread(port); fprintf(stderr, "Bye.\n"); exit(0); } static char usage_line[] = "usage: %s [port]\n"; static void usage(void) { fprintf(stderr, usage_line, progname); exit(2); } static void main_thread(int port) { int sock, conn, size, i; struct sockaddr_in addr, clientaddr; sock = socket(PF_INET, SOCK_STREAM, 0); if (sock < 0) { oprogname(); perror("can't create socket"); exit(1); } #ifdef SO_REUSEADDR i = 1; setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &i, sizeof i); #endif memset((char *)&addr, '\0', sizeof addr); addr.sin_family = AF_INET; addr.sin_port = htons(port); addr.sin_addr.s_addr = 0L; if (bind(sock, (struct sockaddr *)&addr, sizeof addr) < 0) { oprogname(); perror("can't bind socket to address"); exit(1); } if (listen(sock, 5) < 0) { oprogname(); perror("can't listen on socket"); exit(1); } fprintf(stderr, "Listening on port %d...\n", port); for (i = 0; ; i++) { size = sizeof clientaddr; memset((char *) &clientaddr, '\0', size); conn = accept(sock, (struct sockaddr *) &clientaddr, &size); if (conn < 0) { oprogname(); perror("can't accept connection from socket"); exit(1); } size = sizeof addr; memset((char *) &addr, '\0', size); if (getsockname(conn, (struct sockaddr *)&addr, &size) < 0) { oprogname(); perror("can't get socket name of connection"); exit(1); } if (clientaddr.sin_addr.s_addr != addr.sin_addr.s_addr) { oprogname(); perror("connection from non-local host refused"); fprintf(stderr, "(addr=%lx, clientaddr=%lx)\n", ntohl(addr.sin_addr.s_addr), ntohl(clientaddr.sin_addr.s_addr)); close(conn); continue; } if (i == 4) { close(conn); break; } create_thread(conn, &clientaddr); } close(sock); if (gtstate) { PyEval_AcquireThread(gtstate); gtstate = NULL; Py_Finalize(); /* And a second time, just because we can. */ Py_Finalize(); /* This should be harmless. */ } exit(0); } static void create_thread(int conn, struct sockaddr_in *addr) { struct workorder *work; pthread_t tdata; work = malloc(sizeof(struct workorder)); if (work == NULL) { oprogname(); fprintf(stderr, "out of memory for thread.\n"); close(conn); return; } work->conn = conn; work->addr = *addr; init_python(); if (pthread_create(&tdata, NULL, (void *)service_thread, work) < 0) { oprogname(); perror("can't create new thread"); close(conn); return; } if (pthread_detach(tdata) < 0) { oprogname(); perror("can't detach from thread"); } } static PyThreadState *the_tstate; static PyInterpreterState *the_interp; static PyObject *the_builtins; static void init_python(void) { if (gtstate) return; Py_Initialize(); /* Initialize the interpreter */ PyEval_InitThreads(); /* Create (and acquire) the interpreter lock */ gtstate = PyEval_SaveThread(); /* Release the thread state */ } static void * service_thread(struct workorder *work) { FILE *input, *output; fprintf(stderr, "Start thread for connection %d.\n", work->conn); ps(); input = fdopen(work->conn, "r"); if (input == NULL) { oprogname(); perror("can't create input stream"); goto done; } output = fdopen(work->conn, "w"); if (output == NULL) { oprogname(); perror("can't create output stream"); fclose(input); goto done; } setvbuf(input, NULL, _IONBF, 0); setvbuf(output, NULL, _IONBF, 0); run_interpreter(input, output); fclose(input); fclose(output); done: fprintf(stderr, "End thread for connection %d.\n", work->conn); close(work->conn); free(work); } static void oprogname(void) { int save = errno; fprintf(stderr, "%s: ", progname); errno = save; } static void run_interpreter(FILE *input, FILE *output) { PyThreadState *tstate; PyObject *new_stdin, *new_stdout; PyObject *mainmod, *globals; char buffer[1000]; char *p, *q; int n, end; PyEval_AcquireLock(); tstate = Py_NewInterpreter(); if (tstate == NULL) { fprintf(output, "Sorry -- can't create an interpreter\n"); return; } mainmod = PyImport_AddModule("__main__"); globals = PyModule_GetDict(mainmod); Py_INCREF(globals); new_stdin = PyFile_FromFile(input, "<socket-in>", "r", NULL); new_stdout = PyFile_FromFile(output, "<socket-out>", "w", NULL); PySys_SetObject("stdin", new_stdin); PySys_SetObject("stdout", new_stdout); PySys_SetObject("stderr", new_stdout); for (n = 1; !PyErr_Occurred(); n++) { Py_BEGIN_ALLOW_THREADS fprintf(output, "%d> ", n); p = fgets(buffer, sizeof buffer, input); Py_END_ALLOW_THREADS if (p == NULL) break; if (p[0] == '\377' && p[1] == '\354') break; q = strrchr(p, '\r'); if (q && q[1] == '\n' && q[2] == '\0') { *q++ = '\n'; *q++ = '\0'; } while (*p && isspace(*p)) p++; if (p[0] == '#' || p[0] == '\0') continue; end = run_command(buffer, globals); if (end < 0) PyErr_Print(); if (end) break; } Py_XDECREF(globals); Py_XDECREF(new_stdin); Py_XDECREF(new_stdout); Py_EndInterpreter(tstate); PyEval_ReleaseLock(); fprintf(output, "Goodbye!\n"); } static int run_command(char *buffer, PyObject *globals) { PyObject *m, *d, *v; fprintf(stderr, "run_command: %s", buffer); if (strchr(buffer, '\n') == NULL) fprintf(stderr, "\n"); v = PyRun_String(buffer, Py_single_input, globals, globals); if (v == NULL) { if (PyErr_Occurred() == PyExc_SystemExit) { PyErr_Clear(); return 1; } PyErr_Print(); return 0; } Py_DECREF(v); return 0; } static void ps(void) { char buffer[100]; PyOS_snprintf(buffer, sizeof(buffer), "ps -l -p %d </dev/null | sed 1d\n", getpid()); system(buffer); } Makefile 0000644 00000002475 15204241217 0006212 0 ustar 00 # Makefile for 'pysvr' application embedding Python. # Tailored for Python 1.5a3 or later. # Some details are specific for Solaris or CNRI. # Also see ## comments for tailoring. # Which C compiler CC=gcc ##PURIFY=/usr/local/pure/purify LINKCC=$(PURIFY) $(CC) # Optimization preferences OPT=-g # Which Python version we're using VER=2.2 # Expressions using the above definitions PYVER=python$(VER) # Use these defs when compiling against installed Python ##INST=/usr/local ##PYC=$(INST)/lib/$(PYVER)/config ##PYINCL=-I$(INST)/include/$(PYVER) -I$(PYC) ##PYLIBS=$(PYC)/lib$(PYVER).a # Use these defs when compiling against built Python PLAT=linux PYINCL=-I../../Include -I../../$(PLAT) PYLIBS=../../$(PLAT)/lib$(PYVER).a # Libraries to link with -- very installation dependent # (See LIBS= in Modules/Makefile in build tree) RLLIBS=-lreadline -ltermcap OTHERLIBS=-lnsl -lpthread -ldl -lm -ldb -lutil # Compilation and link flags -- no need to change normally CFLAGS=$(OPT) CPPFLAGS=$(PYINCL) LIBS=$(PYLIBS) $(RLLIBS) $(OTHERLIBS) # Default port for the pysvr application PORT=4000 # Default target all: pysvr # Target to build pysvr pysvr: pysvr.o $(PYOBJS) $(PYLIBS) $(LINKCC) pysvr.o $(LIBS) -o pysvr # Target to build and run pysvr run: pysvr pysvr $(PORT) # Target to clean up the directory clean: -rm -f pysvr *.o *~ core
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