/*************************************************************************
* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
* by Michael Pounov <misho@openbsd-bg.org>
*
* $Author: misho $
* $Id: aitcli.c,v 1.2.2.2 2010/06/04 12:46:27 misho Exp $
*
*************************************************************************/
#include "global.h"
#pragma GCC visibility push(hidden)
/*
commands_t cli_stdCmds[] = {
{ "test", cli_Cmd_Unsupported, "Test - Don`t use default command structure!", "test <cr>", cli_Comp_Filename },
{ "-------", NULL, "---------------------", NULL, NULL },
{ "help", cli_Cmd_Help, "Help screen", "help [command] <cr>", NULL },
{ "exit", cli_Cmd_Exit, "Exit from console", "exit <cr>", NULL },
{ NULL, NULL, NULL, NULL }
};
*/
// ------------------------------------------------
int cli_Errno;
char cli_Error[STRSIZ];
#pragma GCC visibility pop
// cli_GetErrno() Get error code of last operation
inline int
cli_GetErrno()
{
return cli_Errno;
}
// io_GetError() Get error text of last operation
inline const char *
cli_GetError()
{
return cli_Error;
}
// cli_SetErr() Set error to variables for internal use!!!
inline void
cli_SetErr(int eno, char *estr, ...)
{
va_list lst;
cli_Errno = eno;
memset(cli_Error, 0, STRSIZ);
va_start(lst, estr);
vsnprintf(cli_Error, STRSIZ, estr, lst);
va_end(lst);
}
// ------------------------------------------------------------
static inline void
clrscrEOL(linebuffer_t * __restrict buf)
{
register int i;
if (buf) {
write(buf->line_out, K_CR, 1);
for (i = 0; i < buf->line_len; i++)
write(buf->line_out, K_SPACE, 1);
}
}
static inline void
printfEOL(linebuffer_t * __restrict buf, int len, int prompt)
{
if (buf) {
write(buf->line_out, K_CR, 1);
if (prompt && buf->line_prompt)
write(buf->line_out, buf->line_prompt, buf->line_bol);
write(buf->line_out, buf->line_buf, len == -1 ? buf->line_eol - buf->line_bol: len);
}
}
static inline void
printfCR(linebuffer_t * __restrict buf, int prompt)
{
if (buf) {
write(buf->line_out, K_CR, 1);
if (prompt)
if (prompt && buf->line_prompt)
write(buf->line_out, buf->line_prompt, buf->line_bol);
}
}
static inline void
printfCLI(linebuffer_t * __restrict buf, const unsigned char *text, int textlen, int prompt)
{
if (buf && text && textlen) {
if (prompt && buf->line_prompt)
write(buf->line_out, buf->line_prompt, buf->line_bol);
write(buf->line_out, text, textlen);
}
}
// ------------------------------------------------------------
/*
* cliNetInit() Initialize Readline if CLI bind to socket
* @csProg = program name
* @pty = Master pty
* @term = stdin termios
* return: none
*/
/*
void cliNetInit(const char *csProg, int pty, struct termios *term)
{
struct termios t;
int on = 1;
memset(&t, 0, sizeof t);
if (term)
t = *term;
else {
t.c_lflag = TTYDEF_LFLAG;
t.c_iflag = TTYDEF_IFLAG;
t.c_oflag = TTYDEF_OFLAG;
t.c_cflag = TTYDEF_CFLAG;
cfsetspeed(&t, B9600);
}
t.c_lflag &= ~(ICANON | ISIG | IEXTEN | ECHO | ECHOCTL | ECHOE | ECHOK | ECHOKE | ECHONL | ECHOPRT);
// t.c_iflag &= ~(ICRNL | BRKINT | INPCK | ISTRIP | IXON);
t.c_iflag &= ~ICRNL;
t.c_iflag |= IGNBRK;
t.c_cc[VMIN] = 1;
t.c_cc[VTIME] = 0;
tcsetattr(pty, TCSANOW, &t);
ioctl(pty, TIOCPKT, &on);
rl_readline_name = csProg;
rl_variable_bind("editing-mode", "emacs");
rl_instream = fdopen(pty, "r");
rl_outstream = NULL;
}
*/
/*
* cliNetExec() Execute net CLI main loop
* @cmdList = Commands list
* @csPrompt = Prompt text
* @sock = client socket
* @term = stdin termios
* @win = window size of tty
* return: -1 error, 0 = exit w/^+D, 1 done.
*/
int
cliNetExec(commands_t *cmdList, const char *csPrompt, int sock, struct termios *term, struct winsize *win)
{
int pty, ret = 0, r, s, alen, attrlen, flg;
fd_set fds;
struct timeval tv = { DEFAULT_SOCK_TIMEOUT, 0 };
u_char buf[BUFSIZ];
struct telnetAttrs *a, Attr[10];
switch (forkpty(&pty, NULL, term, win)) {
case -1:
LOGERR;
return -1;
case 0:
close(sock);
ret = cliExec(cmdList, csPrompt) < 0 ? 1 : 0;
/* spawn Shell mode */
/*
execl("/bin/tcsh", "tcsh", NULL);
*/
_exit(ret);
default:
/* spawn Shell mode */
telnet_SetCmd(Attr + 0, DO, TELOPT_TTYPE);
telnet_SetCmd(Attr + 1, WILL, TELOPT_ECHO);
telnet_Set_SubOpt(Attr + 2, TELOPT_LFLOW, LFLOW_OFF, NULL, 0);
telnet_Set_SubOpt(Attr + 3, TELOPT_LFLOW, LFLOW_RESTART_XON, NULL, 0);
telnet_SetCmd(Attr + 4, DO, TELOPT_LINEMODE);
if ((ret = telnetSend(sock, Attr, 5, NULL, 0, 0)) == -1) {
cli_Errno = telnet_GetErrno();
strlcpy(cli_Error, telnet_GetError(), STRSIZ);
return -1;
} else
flg = 0;
while (42) {
FD_ZERO(&fds);
FD_SET(sock, &fds);
FD_SET(pty, &fds);
if ((ret = select(FD_SETSIZE, &fds, NULL, NULL, &tv)) < 1) {
if (!ret)
cli_SetErr(ETIMEDOUT, "Client session timeout ...");
break;
}
r = FD_ISSET(sock, &fds) ? sock : pty;
s = FD_ISSET(sock, &fds) ? pty : sock;
if ((ret = telnetRecv(r, &a, &alen, buf, BUFSIZ)) < 0) {
if (a)
free(a);
if (-2 == ret)
continue;
// EOF
if (-3 == ret)
shutdown(r, SHUT_RD);
else {
cli_Errno = telnet_GetErrno();
strlcpy(cli_Error, telnet_GetError(), STRSIZ);
}
break;
}
attrlen = 0;
if (1 == flg && alen) {
telnet_SetCmd(&Attr[attrlen++], DONT, TELOPT_SGA);
telnet_SetCmd(&Attr[attrlen++], DO, TELOPT_ECHO);
}
if (2 == flg && alen) {
telnet_SetCmd(&Attr[attrlen++], WILL, TELOPT_ECHO);
telnet_Set_SubOpt(&Attr[attrlen++], TELOPT_LFLOW,
LFLOW_OFF, NULL, 0);
telnet_Set_SubOpt(&Attr[attrlen++], TELOPT_LFLOW,
LFLOW_RESTART_XON, NULL, 0);
telnet_SetCmd(&Attr[attrlen++], DONT, TELOPT_LINEMODE);
}
if (a)
free(a);
if ((ret = telnetSend(s, Attr, pty == s ? 0 : attrlen, buf, ret, 0)) == -1) {
cli_Errno = telnet_GetErrno();
strlcpy(cli_Error, telnet_GetError(), STRSIZ);
break;
} else
flg++;
}
close(pty);
}
return ret;
}
/*
* cliExec() Execute CLI main loop
* @cmdList = Commands list
* @csPrompt = Prompt text
* return: -1 error, 0 = exit w/^+D, 1 done.
*/
/*
int cliExec(cliCommands_t *cmdList, const char *csPrompt)
{
char *line, *s, *t, **app, *items[MAX_PROMPT_ITEMS];
int ret = 0;
register int i;
cliCommands_t *cmd = NULL;
FILE *out;
inline int inline_help()
{
cli_Cmd_Help(cmdList ? cmdList : cli_stdCmds, -1, out, NULL);
rl_on_new_line();
return 0;
}
char **cli_stdCompletion(const char *text, int start, int end)
{
register int i;
char **matches = NULL;
char *cmdCompGet(const char *text, int state)
{
int len = strlen(text);
for (i = state; cmdList[i].cmd_name; i++) {
if (strncmp(cmdList[i].cmd_name, "---", 3) &&
!strncmp(cmdList[i].cmd_name, text, len))
return strdup(cmdList[i].cmd_name);
}
return NULL;
}
if (!start)
matches = rl_completion_matches(text, cmdCompGet);
else
for (i = 0; cmdList[i].cmd_name; i++) {
if (!cmdList[i].cmd_comp)
continue;
if (!strncmp(rl_line_buffer, cmdList[i].cmd_name, strlen(cmdList[i].cmd_name)))
matches = rl_completion_matches(text, cmdList[i].cmd_comp);
}
return matches;
}
char *cli_stdCompEntry(const char *ignore, int invoking_key)
{
return NULL;
}
*/
/* --- main body of CLI --- */
/*
out = rl_outstream;
if (!out)
out = stdout;
rl_bind_key('?', inline_help);
if (!rl_attempted_completion_function)
cliComp(cli_stdCompletion, cli_stdCompEntry);
do {
line = readline(csPrompt);
if (!line) { // ^+d
cli_Printf(out, "\n");
break;
}
// clear whitespaces
for (s = line; isspace(*s); s++);
if (*s) {
for (t = s + strlen(s) - 1; t > s && isspace(*t); t--);
*++t = 0;
}
if (*s) {
add_history(s);
memset(items, 0, sizeof(char*) * MAX_PROMPT_ITEMS);
for (app = items; app < items + MAX_PROMPT_ITEMS - 1 && (*app = strsep(&s, " \t"));
*app ? app++ : app);
// exec_cmd ...
for (cmd = NULL, i = 0; cmdList[i].cmd_name; i++)
if (*items[0] && !strncmp(cmdList[i].cmd_name, items[0], strlen(items[0]))) {
cmd = &cmdList[i];
break;
}
if (!cmd) {
cli_Printf(out, "Command '%s' not found!\n", items[0]);
ret = -1;
} else
ret = cmd->cmd_func(cmdList, i, out, items);
}
free(line);
} while (ret < 1);
return ret;
}
*/
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