pty testing application
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23079 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
271
lib/roken/rkpty.c
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271
lib/roken/rkpty.c
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/*
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* Copyright (c) 2008 Kungliga Tekniska H<>gskolan
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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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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <util.h>
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#include "roken.h"
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#include <getarg.h>
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struct command {
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enum { CMD_EXPECT = 0, CMD_SEND } type;
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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 int 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
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open_pty(void)
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{
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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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/* 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 *
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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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return estrdup(buf + len);
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}
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static void
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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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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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(*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
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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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/*
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*
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*/
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static int
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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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len = 0;
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while((sret = read(master, &in, sizeof(in))) > 0) {
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if (verbose)
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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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if (sret <= 0)
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errx(1, "end command while waiting for %s", c->str);
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break;
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case CMD_SEND: {
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size_t i = 0;
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if (verbose)
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printf("[output]");
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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': ctrl = '\n'; break;
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case 'r': ctrl = '\r'; break;
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case 't': ctrl = '\t'; break;
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default:
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errx(1, "unknown control char %c", c->str[i]);
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}
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if (net_write(master, &ctrl, 1) != 1)
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errx(1, "command refused input");
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} else {
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if (net_write(master, &c->str[i], 1) != 1)
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errx(1, "command refused input");
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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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if (verbose)
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printf("%c", in);
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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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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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static struct getargs args[] = {
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{ "verbose", 'v', arg_flag, &verbose, "verbose debugging" }
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};
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static void
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usage(int ret)
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{
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arg_printusage (args, sizeof(args)/sizeof(*args), NULL, "infile command..");
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exit (ret);
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}
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int
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main(int argc, char **argv)
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{
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int optidx = 0;
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pid_t pid;
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setprogname(argv[0]);
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if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
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usage(1);
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argv += optidx;
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argc -= optidx;
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if (argc < 2)
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errx(1, "to few arguments");
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parse_configuration(argv[0]);
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argv += 1;
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argc -= 1;
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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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closefrom(STDERR_FILENO + 1);
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execvp(argv[0], argv); /* add NULL to end of array ? */
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err(1, "Failed to exec: %s", argv[0]);
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default:
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close(slave);
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return eval_parent(pid);
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}
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}
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