mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
867f0a80a8
texpect is the only remaining user of ccan code. Copy in the two routines Signed-off-by: Volker Lendecke <vl@samba.org> Reviewed-by: Michael Adam <obnox@samba.org>
466 lines
9.3 KiB
C
466 lines
9.3 KiB
C
/*
|
|
* Copyright (c) 2008 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* All rights reserved.
|
|
*
|
|
* 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
|
|
*/
|
|
|
|
#include "replace.h"
|
|
#include "system/filesys.h"
|
|
#include "system/wait.h"
|
|
|
|
#ifdef HAVE_PTY_H
|
|
#include <pty.h>
|
|
#endif
|
|
#ifdef HAVE_UTIL_H
|
|
#include <util.h>
|
|
#endif
|
|
#ifdef HAVE_BSD_LIBUTIL_H
|
|
#include <bsd/libutil.h>
|
|
#elif defined HAVE_LIBUTIL_H
|
|
#include <libutil.h>
|
|
#endif
|
|
|
|
#ifdef STREAMSPTY
|
|
#include <stropts.h>
|
|
#endif /* STREAMPTY */
|
|
|
|
#include <popt.h>
|
|
|
|
#ifdef HAVE_ERR_H
|
|
#include <err.h>
|
|
#else
|
|
const char progname[] = "unknown program";
|
|
|
|
static void err(int eval, const char *fmt, ...)
|
|
{
|
|
int err_errno = errno;
|
|
va_list ap;
|
|
|
|
fprintf(stderr, "%s: ", progname);
|
|
va_start(ap, fmt);
|
|
vfprintf(stderr, fmt, ap);
|
|
va_end(ap);
|
|
fprintf(stderr, ": %s\n", strerror(err_errno));
|
|
exit(eval);
|
|
}
|
|
|
|
static void errx(int eval, const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
fprintf(stderr, "%s: ", progname);
|
|
va_start(ap, fmt);
|
|
vfprintf(stderr, fmt, ap);
|
|
va_end(ap);
|
|
fprintf(stderr, "\n");
|
|
exit(eval);
|
|
}
|
|
|
|
#endif
|
|
|
|
struct command {
|
|
enum { CMD_EXPECT = 0, CMD_SEND, CMD_PASSWORD } type;
|
|
unsigned int lineno;
|
|
char *str;
|
|
struct command *next;
|
|
};
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
static struct command *commands, **next = &commands;
|
|
|
|
static sig_atomic_t alarmset = 0;
|
|
|
|
static int opt_timeout = 10;
|
|
static int opt_verbose;
|
|
|
|
static int master;
|
|
static int slave;
|
|
static char line[256] = { 0 };
|
|
|
|
static void caught_signal(int signo)
|
|
{
|
|
alarmset = signo;
|
|
}
|
|
|
|
|
|
static void open_pty(void)
|
|
{
|
|
#ifdef _AIX
|
|
printf("implement open_pty\n");
|
|
exit(77);
|
|
#endif
|
|
#if defined(HAVE_OPENPTY) || defined(__linux) || defined(__osf__) /* XXX */
|
|
if(openpty(&master, &slave, line, 0, 0) == 0)
|
|
return;
|
|
#endif /* HAVE_OPENPTY .... */
|
|
#ifdef STREAMSPTY
|
|
{
|
|
char *clone[] = {
|
|
"/dev/ptc",
|
|
"/dev/ptmx",
|
|
"/dev/ptm",
|
|
"/dev/ptym/clone",
|
|
NULL
|
|
};
|
|
char **q;
|
|
|
|
for(q = clone; *q; q++){
|
|
master = open(*q, O_RDWR);
|
|
if(master >= 0){
|
|
#ifdef HAVE_GRANTPT
|
|
grantpt(master);
|
|
#endif
|
|
#ifdef HAVE_UNLOCKPT
|
|
unlockpt(master);
|
|
#endif
|
|
strlcpy(line, ptsname(master), sizeof(line));
|
|
slave = open(line, O_RDWR);
|
|
if (slave < 0)
|
|
errx(1, "failed to open slave when using %s", *q);
|
|
ioctl(slave, I_PUSH, "ptem");
|
|
ioctl(slave, I_PUSH, "ldterm");
|
|
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
#endif /* STREAMSPTY */
|
|
|
|
/* more cases, like open /dev/ptmx, etc */
|
|
|
|
exit(77);
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
static char *iscmd(const char *buf, const char *s)
|
|
{
|
|
size_t len = strlen(s);
|
|
|
|
if (strncmp(buf, s, len) != 0) {
|
|
return NULL;
|
|
}
|
|
|
|
return strdup(buf + len);
|
|
}
|
|
|
|
/*******************************************************************
|
|
A write wrapper that will deal with EINTR.
|
|
********************************************************************/
|
|
|
|
static ssize_t sys_write(int fd, const void *buf, size_t count)
|
|
{
|
|
ssize_t ret;
|
|
|
|
do {
|
|
ret = write(fd, buf, count);
|
|
#if defined(EWOULDBLOCK)
|
|
} while (ret == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK));
|
|
#else
|
|
} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
static void parse_configuration(const char *fn)
|
|
{
|
|
struct command *c;
|
|
char s[1024];
|
|
char *str;
|
|
unsigned int lineno = 0;
|
|
FILE *cmd;
|
|
|
|
cmd = fopen(fn, "r");
|
|
if (cmd == NULL)
|
|
err(1, "open: %s", fn);
|
|
|
|
while (fgets(s, sizeof(s), cmd) != NULL) {
|
|
|
|
s[strcspn(s, "#\n")] = '\0';
|
|
lineno++;
|
|
|
|
c = calloc(1, sizeof(*c));
|
|
if (c == NULL)
|
|
errx(1, "malloc");
|
|
|
|
c->lineno = lineno;
|
|
(*next) = c;
|
|
next = &(c->next);
|
|
|
|
if ((str = iscmd(s, "expect ")) != NULL) {
|
|
c->type = CMD_EXPECT;
|
|
c->str = str;
|
|
} else if ((str = iscmd(s, "send ")) != NULL) {
|
|
c->type = CMD_SEND;
|
|
c->str = str;
|
|
} else if ((str = iscmd(s, "password ")) != NULL) {
|
|
c->type = CMD_PASSWORD;
|
|
c->str = str;
|
|
} else
|
|
errx(1, "Invalid command on line %d: %s", lineno, s);
|
|
}
|
|
|
|
fclose(cmd);
|
|
}
|
|
|
|
/* A wrapper to close als file descriptors above the given fd */
|
|
static int sys_closefrom(int fd)
|
|
{
|
|
int num = getdtablesize();
|
|
|
|
if (num < 0) {
|
|
num = 1024;
|
|
}
|
|
|
|
for (; fd <= num; fd++) {
|
|
close(fd);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
static int eval_parent(pid_t pid)
|
|
{
|
|
struct command *c;
|
|
char in;
|
|
size_t len = 0;
|
|
ssize_t sret;
|
|
|
|
for (c = commands; c != NULL; c = c->next) {
|
|
switch(c->type) {
|
|
case CMD_EXPECT:
|
|
if (opt_verbose) {
|
|
printf("[expecting %s]\n", c->str);
|
|
}
|
|
len = 0;
|
|
alarm(opt_timeout);
|
|
while((sret = read(master, &in, sizeof(in))) > 0) {
|
|
alarm(opt_timeout);
|
|
printf("%c", in);
|
|
if (c->str[len] != in) {
|
|
len = 0;
|
|
continue;
|
|
}
|
|
len++;
|
|
if (c->str[len] == '\0') {
|
|
break;
|
|
}
|
|
}
|
|
alarm(0);
|
|
if (alarmset == SIGALRM) {
|
|
errx(1, "timeout waiting for %s (line %u)",
|
|
c->str, c->lineno);
|
|
} else if (alarmset) {
|
|
errx(1, "got a signal %d waiting for %s (line %u)",
|
|
(int)alarmset, c->str, c->lineno);
|
|
}
|
|
|
|
if (sret <= 0) {
|
|
errx(1, "end command while waiting for %s (line %u)",
|
|
c->str, c->lineno);
|
|
}
|
|
break;
|
|
case CMD_SEND:
|
|
case CMD_PASSWORD: {
|
|
size_t i = 0;
|
|
const char *msg = (c->type == CMD_PASSWORD) ? "****" : c->str;
|
|
|
|
if (opt_verbose) {
|
|
printf("[send %s]\n", msg);
|
|
}
|
|
|
|
len = strlen(c->str);
|
|
|
|
while (i < len) {
|
|
if (c->str[i] == '\\' && i < len - 1) {
|
|
char ctrl;
|
|
i++;
|
|
switch(c->str[i]) {
|
|
case 'n':
|
|
ctrl = '\n';
|
|
break;
|
|
case 'r':
|
|
ctrl = '\r';
|
|
break;
|
|
case 't':
|
|
ctrl = '\t';
|
|
break;
|
|
default:
|
|
errx(1,
|
|
"unknown control char %c (line %u)",
|
|
c->str[i],
|
|
c->lineno);
|
|
}
|
|
if (sys_write(master, &ctrl, 1) != 1) {
|
|
errx(1, "command refused input (line %u)", c->lineno);
|
|
}
|
|
} else {
|
|
if (sys_write(master, &c->str[i], 1) != 1) {
|
|
errx(1, "command refused input (line %u)", c->lineno);
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
while(read(master, &in, sizeof(in)) > 0) {
|
|
printf("%c", in);
|
|
}
|
|
|
|
if (opt_verbose) {
|
|
printf("[end of program]\n");
|
|
}
|
|
|
|
/*
|
|
* Fetch status from child
|
|
*/
|
|
{
|
|
int ret, status;
|
|
|
|
ret = waitpid(pid, &status, 0);
|
|
if (ret == -1) {
|
|
err(1, "waitpid");
|
|
}
|
|
|
|
if (WIFEXITED(status) && WEXITSTATUS(status)) {
|
|
return WEXITSTATUS(status);
|
|
} else if (WIFSIGNALED(status)) {
|
|
printf("killed by signal: %d\n", WTERMSIG(status));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
struct poptOption long_options[] = {
|
|
POPT_AUTOHELP
|
|
{"timeout", 't', POPT_ARG_INT, &opt_timeout, 't'},
|
|
{"verbose", 'v', POPT_ARG_NONE, &opt_verbose, 'v'},
|
|
POPT_TABLEEND
|
|
};
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
int optidx = 0;
|
|
pid_t pid;
|
|
poptContext pc;
|
|
const char *instruction_file;
|
|
const char **args;
|
|
const char *program;
|
|
char * const *program_args;
|
|
|
|
pc = poptGetContext("texpect",
|
|
argc,
|
|
argv,
|
|
long_options,
|
|
POPT_CONTEXT_POSIXMEHARDER);
|
|
|
|
if (argc == 1) {
|
|
poptPrintHelp(pc, stderr, 0);
|
|
return 1;
|
|
}
|
|
|
|
while ((optidx = poptGetNextOpt(pc)) != -1) {
|
|
;;
|
|
}
|
|
|
|
instruction_file = poptGetArg(pc);
|
|
args = poptGetArgs(pc);
|
|
program_args = (char * const *)discard_const_p(char *, args);
|
|
program = program_args[0];
|
|
|
|
if (opt_verbose) {
|
|
int i;
|
|
|
|
printf("Using instruction_file: %s\n", instruction_file);
|
|
printf("Executing '%s' ", program);
|
|
for (i = 0; program_args && program_args[i] != NULL; i++) {
|
|
printf("'%s' ", program_args[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
parse_configuration(instruction_file);
|
|
|
|
open_pty();
|
|
|
|
pid = fork();
|
|
switch (pid) {
|
|
case -1:
|
|
err(1, "Failed to fork");
|
|
case 0:
|
|
|
|
if(setsid()<0)
|
|
err(1, "setsid");
|
|
|
|
dup2(slave, STDIN_FILENO);
|
|
dup2(slave, STDOUT_FILENO);
|
|
dup2(slave, STDERR_FILENO);
|
|
|
|
sys_closefrom(STDERR_FILENO + 1);
|
|
|
|
/* texpect <expect_instructions> <progname> [<args>] */
|
|
execvp(program, program_args);
|
|
err(1, "Failed to exec: %s", program);
|
|
default:
|
|
close(slave);
|
|
{
|
|
struct sigaction sa;
|
|
|
|
sa.sa_handler = caught_signal;
|
|
sa.sa_flags = 0;
|
|
sigemptyset (&sa.sa_mask);
|
|
|
|
sigaction(SIGALRM, &sa, NULL);
|
|
}
|
|
|
|
return eval_parent(pid);
|
|
}
|
|
}
|