--- /dev/null
+/*
+ * 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 "config.h"
+
+#ifndef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_PTY_H
+#include <pty.h>
+#endif
+#ifdef HAVE_UTIL_H
+#include <util.h>
+#endif
+#ifdef HAVE_LIBUTIL_H
+#include <libutil.h>
+#endif
+
+#ifdef STREAMSPTY
+#include <stropts.h>
+#endif /* STREAMPTY */
+
+#include <popt.h>
+#include <errno.h>
+#include <err.h>
+
+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 *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);
+ program_args = poptGetArgs(pc);
+ 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);
+ }
+}
git.samba.org / amitay / samba.git / commitdiff