Add samba4kpasswd and rkpty binaries

smaba4kpasswd will be used to test the kpasswdd componet of the KDC
(which is up until now untested), and rkpty is an expect-like wrapper
we can use to blackbox that utility.

Andrew Bartlett

1 files changed, 336 insertions, 0 deletions

diff --git a/source4/heimdal/lib/roken/rkpty.c b/source4/heimdal/lib/roken/rkpty.c
new file mode 100644
index 0000000000..e29b2c5aca
--- /dev/null
+++ b/source4/heimdal/lib/roken/rkpty.c
@@ -0,0 +1,336 @@
+/*
+ * 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 <unistd.h>
+#ifdef HAVE_PTY_H
+#include <pty.h>
+#endif
+#ifdef HAVE_UTIL_H
+#include <util.h>
+#endif
+
+#include "roken.h"
+#include <getarg.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 timeout = 10;
+static int verbose;
+static int help_flag;
+static int version_flag;
+
+static int master;
+static int slave;
+static char line[256] = { 0 };
+
+static void
+caught_signal(int signo)
+{
+    alarmset = signo;
+}
+
+
+static void
+open_pty(void)
+{
+#if defined(HAVE_OPENPTY) || defined(__linux) || defined(__osf__) /* XXX */
+    if(openpty(&master, &slave, line, 0, 0) == 0)
+	return;
+#endif /* HAVE_OPENPTY .... */
+    /* 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 estrdup(buf + len);
+}
+
+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);
+}
+
+
+/*
+ *
+ */
+
+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 (verbose)
+		printf("[expecting %s]", c->str);
+	    len = 0;
+	    alarm(timeout);
+	    while((sret = read(master, &in, sizeof(in))) > 0) {
+		alarm(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)", 
+		     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 (verbose)
+		printf("[send %s]", 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 (net_write(master, &ctrl, 1) != 1)
+			errx(1, "command refused input (line %u)", c->lineno);
+		} else {
+		    if (net_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 (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;
+}
+
+/*
+ *
+ */
+
+static struct getargs args[] = {
+    { "timeout", 	't', arg_integer, &timeout, "timout", "seconds" },
+    { "verbose", 	'v', arg_counter, &verbose, "verbose debugging" },
+    { "version",	0, arg_flag,	&version_flag, "print version" },
+    { "help",		0, arg_flag,	&help_flag, NULL }
+};
+
+static void
+usage(int ret)
+{
+    arg_printusage (args, sizeof(args)/sizeof(*args), NULL, "infile command..");
+    exit (ret);
+}
+
+int
+main(int argc, char **argv)
+{
+    int optidx = 0;
+    pid_t pid;
+
+    setprogname(argv[0]);
+
+    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
+	usage(1);
+
+    if (help_flag)
+	usage (0);
+
+    if (version_flag) {
+	fprintf (stderr, "%s from %s-%s\n", getprogname(), PACKAGE, VERSION);
+	return 0;
+    }
+
+    argv += optidx;
+    argc -= optidx;
+
+    if (argc < 2)
+	usage(1);
+
+    parse_configuration(argv[0]);
+
+    argv += 1;
+    argc -= 1;
+
+    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);
+	closefrom(STDERR_FILENO + 1);
+
+	execvp(argv[0], argv); /* add NULL to end of array ? */
+	err(1, "Failed to exec: %s", argv[0]);
+    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);
+    }
+}