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https://github.com/samba-team/samba.git
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lib/texpect: add texpect binary based on heimdals rkpty.
Guenther Pair-Programmed-With: Andreas Schneider <asn@samba.org> Signed-off-by: Guenther Deschner <gd@samba.org> Reviewed-by: Andrew Bartlet <abartlet@samba.org>
This commit is contained in:
Günther Deschner
Andreas Schneider
parent
9e42b01865
commit
3ba74c83dc
441
lib/texpect/texpect.c
Normal file
441
lib/texpect/texpect.c
Normal file
@ -0,0 +1,441 @@
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/*
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* Copyright (c) 2008 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "config.h"
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#ifndef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_PTY_H
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#include <pty.h>
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#endif
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#ifdef HAVE_UTIL_H
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#include <util.h>
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#endif
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#ifdef HAVE_LIBUTIL_H
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#include <libutil.h>
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#endif
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#ifdef STREAMSPTY
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#include <stropts.h>
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#endif /* STREAMPTY */
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#include <popt.h>
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#include <errno.h>
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#include <err.h>
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struct command {
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enum { CMD_EXPECT = 0, CMD_SEND, CMD_PASSWORD } type;
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unsigned int lineno;
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char *str;
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struct command *next;
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};
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/*
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*
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*/
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static struct command *commands, **next = &commands;
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static sig_atomic_t alarmset = 0;
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static int opt_timeout = 10;
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static int opt_verbose;
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static int master;
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static int slave;
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static char line[256] = { 0 };
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static void caught_signal(int signo)
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{
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alarmset = signo;
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}
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static void open_pty(void)
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{
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#ifdef _AIX
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printf("implement open_pty\n");
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exit(77);
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#endif
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#if defined(HAVE_OPENPTY) || defined(__linux) || defined(__osf__) /* XXX */
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if(openpty(&master, &slave, line, 0, 0) == 0)
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return;
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#endif /* HAVE_OPENPTY .... */
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#ifdef STREAMSPTY
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{
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char *clone[] = {
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"/dev/ptc",
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"/dev/ptmx",
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"/dev/ptm",
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"/dev/ptym/clone",
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NULL
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};
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char **q;
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for(q = clone; *q; q++){
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master = open(*q, O_RDWR);
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if(master >= 0){
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#ifdef HAVE_GRANTPT
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grantpt(master);
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#endif
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#ifdef HAVE_UNLOCKPT
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unlockpt(master);
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#endif
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strlcpy(line, ptsname(master), sizeof(line));
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slave = open(line, O_RDWR);
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if (slave < 0)
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errx(1, "failed to open slave when using %s", *q);
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ioctl(slave, I_PUSH, "ptem");
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ioctl(slave, I_PUSH, "ldterm");
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return;
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}
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}
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}
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#endif /* STREAMSPTY */
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/* more cases, like open /dev/ptmx, etc */
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exit(77);
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}
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/*
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*
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*/
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static char *iscmd(const char *buf, const char *s)
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{
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size_t len = strlen(s);
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if (strncmp(buf, s, len) != 0) {
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return NULL;
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}
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return strdup(buf + len);
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}
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/*******************************************************************
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A write wrapper that will deal with EINTR.
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********************************************************************/
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static ssize_t sys_write(int fd, const void *buf, size_t count)
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{
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ssize_t ret;
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do {
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ret = write(fd, buf, count);
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#if defined(EWOULDBLOCK)
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} while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
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#else
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} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
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#endif
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return ret;
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}
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static void parse_configuration(const char *fn)
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{
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struct command *c;
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char s[1024];
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char *str;
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unsigned int lineno = 0;
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FILE *cmd;
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cmd = fopen(fn, "r");
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if (cmd == NULL)
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err(1, "open: %s", fn);
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while (fgets(s, sizeof(s), cmd) != NULL) {
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s[strcspn(s, "#\n")] = '\0';
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lineno++;
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c = calloc(1, sizeof(*c));
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if (c == NULL)
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errx(1, "malloc");
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c->lineno = lineno;
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(*next) = c;
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next = &(c->next);
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if ((str = iscmd(s, "expect ")) != NULL) {
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c->type = CMD_EXPECT;
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c->str = str;
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} else if ((str = iscmd(s, "send ")) != NULL) {
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c->type = CMD_SEND;
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c->str = str;
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} else if ((str = iscmd(s, "password ")) != NULL) {
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c->type = CMD_PASSWORD;
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c->str = str;
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} else
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errx(1, "Invalid command on line %d: %s", lineno, s);
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}
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fclose(cmd);
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}
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/* A wrapper to close als file descriptors above the given fd */
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static int sys_closefrom(int fd)
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{
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int num = getdtablesize();
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if (num < 0) {
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num = 1024;
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}
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for (; fd <= num; fd++) {
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close(fd);
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}
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return 0;
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}
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/*
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*
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*/
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static int eval_parent(pid_t pid)
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{
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struct command *c;
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char in;
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size_t len = 0;
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ssize_t sret;
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for (c = commands; c != NULL; c = c->next) {
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switch(c->type) {
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case CMD_EXPECT:
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if (opt_verbose) {
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printf("[expecting %s]\n", c->str);
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}
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len = 0;
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alarm(opt_timeout);
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while((sret = read(master, &in, sizeof(in))) > 0) {
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alarm(opt_timeout);
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printf("%c", in);
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if (c->str[len] != in) {
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len = 0;
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continue;
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}
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len++;
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if (c->str[len] == '\0') {
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break;
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}
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}
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alarm(0);
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if (alarmset == SIGALRM) {
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errx(1, "timeout waiting for %s (line %u)",
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c->str, c->lineno);
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} else if (alarmset) {
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errx(1, "got a signal %d waiting for %s (line %u)",
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(int)alarmset, c->str, c->lineno);
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}
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if (sret <= 0) {
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errx(1, "end command while waiting for %s (line %u)",
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c->str, c->lineno);
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}
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break;
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case CMD_SEND:
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case CMD_PASSWORD: {
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size_t i = 0;
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const char *msg = (c->type == CMD_PASSWORD) ? "****" : c->str;
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if (opt_verbose) {
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printf("[send %s]\n", msg);
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}
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len = strlen(c->str);
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while (i < len) {
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if (c->str[i] == '\\' && i < len - 1) {
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char ctrl;
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i++;
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switch(c->str[i]) {
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case 'n':
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ctrl = '\n';
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break;
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case 'r':
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ctrl = '\r';
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break;
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case 't':
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ctrl = '\t';
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break;
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default:
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errx(1,
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"unknown control char %c (line %u)",
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c->str[i],
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c->lineno);
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}
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if (sys_write(master, &ctrl, 1) != 1) {
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errx(1, "command refused input (line %u)", c->lineno);
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}
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} else {
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if (sys_write(master, &c->str[i], 1) != 1) {
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errx(1, "command refused input (line %u)", c->lineno);
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}
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}
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i++;
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}
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break;
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}
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default:
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abort();
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}
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}
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while(read(master, &in, sizeof(in)) > 0) {
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printf("%c", in);
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}
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if (opt_verbose) {
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printf("[end of program]\n");
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}
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/*
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* Fetch status from child
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*/
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{
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int ret, status;
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ret = waitpid(pid, &status, 0);
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if (ret == -1) {
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err(1, "waitpid");
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}
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if (WIFEXITED(status) && WEXITSTATUS(status)) {
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return WEXITSTATUS(status);
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} else if (WIFSIGNALED(status)) {
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printf("killed by signal: %d\n", WTERMSIG(status));
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return 1;
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}
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}
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return 0;
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}
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/*
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*
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*/
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struct poptOption long_options[] = {
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POPT_AUTOHELP
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{"timeout", 't', POPT_ARG_INT, &opt_timeout, 't'},
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{"verbose", 'v', POPT_ARG_NONE, &opt_verbose, 'v'},
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POPT_TABLEEND
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};
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int main(int argc, const char **argv)
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{
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int optidx = 0;
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pid_t pid;
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poptContext pc;
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const char *instruction_file;
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const char *program;
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char* const *program_args;
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pc = poptGetContext("texpect",
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argc,
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argv,
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long_options,
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POPT_CONTEXT_POSIXMEHARDER);
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if (argc == 1) {
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poptPrintHelp(pc, stderr, 0);
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return 1;
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}
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while ((optidx = poptGetNextOpt(pc)) != -1) {
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;;
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}
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instruction_file = poptGetArg(pc);
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program_args = poptGetArgs(pc);
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program = program_args[0];
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if (opt_verbose) {
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int i;
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printf("Using instruction_file: %s\n", instruction_file);
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printf("Executing '%s' ", program);
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for (i = 0; program_args && program_args[i] != NULL; i++) {
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printf("'%s' ", program_args[i]);
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}
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printf("\n");
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}
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parse_configuration(instruction_file);
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open_pty();
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pid = fork();
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switch (pid) {
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case -1:
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err(1, "Failed to fork");
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case 0:
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if(setsid()<0)
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err(1, "setsid");
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dup2(slave, STDIN_FILENO);
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dup2(slave, STDOUT_FILENO);
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dup2(slave, STDERR_FILENO);
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sys_closefrom(STDERR_FILENO + 1);
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/* texpect <expect_instructions> <progname> [<args>] */
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execvp(program, program_args);
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err(1, "Failed to exec: %s", program);
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default:
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close(slave);
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{
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struct sigaction sa;
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sa.sa_handler = caught_signal;
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sa.sa_flags = 0;
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sigemptyset (&sa.sa_mask);
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sigaction(SIGALRM, &sa, NULL);
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}
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return eval_parent(pid);
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}
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}
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9
lib/texpect/wscript
Normal file
9
lib/texpect/wscript
Normal file
@ -0,0 +1,9 @@
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#!/usr/bin/env python
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def configure(conf):
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conf.CHECK_FUNCS_IN('openpty', 'util', checklibc=True, headers='pty.h util.h libutil.h')
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def build(bld):
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bld.SAMBA_BINARY('texpect',
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'texpect.c',
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deps='popt util')
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1
wscript
1
wscript
@ -165,6 +165,7 @@ def configure(conf):
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conf.RECURSE('pidl')
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conf.RECURSE('selftest')
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conf.RECURSE('source3')
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conf.RECURSE('lib/texpect')
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conf.SAMBA_CHECK_UNDEFINED_SYMBOL_FLAGS()
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@ -38,6 +38,7 @@ bld.RECURSE('lib/replace')
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bld.RECURSE('lib/socket')
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bld.RECURSE('lib/talloc')
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bld.RECURSE('lib/tevent')
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bld.RECURSE('lib/texpect')
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bld.RECURSE('lib/addns')
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bld.RECURSE('lib/ccan')
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bld.RECURSE('lib/tdb_compat')
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