*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
+//config:config CHAT
+//config: bool "chat (6.6 kb)"
+//config: default y
+//config: help
+//config: Simple chat utility.
+//config:
+//config:config FEATURE_CHAT_NOFAIL
+//config: bool "Enable NOFAIL expect strings"
+//config: depends on CHAT
+//config: default y
+//config: help
+//config: When enabled expect strings which are started with a dash trigger
+//config: no-fail mode. That is when expectation is not met within timeout
+//config: the script is not terminated but sends next SEND string and waits
+//config: for next EXPECT string. This allows to compose far more flexible
+//config: scripts.
+//config:
+//config:config FEATURE_CHAT_TTY_HIFI
+//config: bool "Force STDIN to be a TTY"
+//config: depends on CHAT
+//config: default n
+//config: help
+//config: Original chat always treats STDIN as a TTY device and sets for it
+//config: so-called raw mode. This option turns on such behaviour.
+//config:
+//config:config FEATURE_CHAT_IMPLICIT_CR
+//config: bool "Enable implicit Carriage Return"
+//config: depends on CHAT
+//config: default y
+//config: help
+//config: When enabled make chat to terminate all SEND strings with a "\r"
+//config: unless "\c" is met anywhere in the string.
+//config:
+//config:config FEATURE_CHAT_SWALLOW_OPTS
+//config: bool "Swallow options"
+//config: depends on CHAT
+//config: default y
+//config: help
+//config: Busybox chat require no options. To make it not fail when used
+//config: in place of original chat (which has a bunch of options) turn
+//config: this on.
+//config:
+//config:config FEATURE_CHAT_SEND_ESCAPES
+//config: bool "Support weird SEND escapes"
+//config: depends on CHAT
+//config: default y
+//config: help
+//config: Original chat uses some escape sequences in SEND arguments which
+//config: are not sent to device but rather performs special actions.
+//config: E.g. "\K" means to send a break sequence to device.
+//config: "\d" delays execution for a second, "\p" -- for a 1/100 of second.
+//config: Before turning this option on think twice: do you really need them?
+//config:
+//config:config FEATURE_CHAT_VAR_ABORT_LEN
+//config: bool "Support variable-length ABORT conditions"
+//config: depends on CHAT
+//config: default y
+//config: help
+//config: Original chat uses fixed 50-bytes length ABORT conditions. Say N here.
+//config:
+//config:config FEATURE_CHAT_CLR_ABORT
+//config: bool "Support revoking of ABORT conditions"
+//config: depends on CHAT
+//config: default y
+//config: help
+//config: Support CLR_ABORT directive.
+
+//applet:IF_CHAT(APPLET(chat, BB_DIR_USR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_CHAT) += chat.o
+
+//usage:#define chat_trivial_usage
+//usage: "EXPECT [SEND [EXPECT [SEND...]]]"
+//usage:#define chat_full_usage "\n\n"
+//usage: "Useful for interacting with a modem connected to stdin/stdout.\n"
+//usage: "A script consists of \"expect-send\" argument pairs.\n"
+//usage: "Example:\n"
+//usage: "chat '' ATZ OK ATD123456 CONNECT '' ogin: pppuser word: ppppass '~'"
+
#include "libbb.h"
+#include "common_bufsiz.h"
// default timeout: 45 sec
-#define DEFAULT_CHAT_TIMEOUT 45*1000
+#define DEFAULT_CHAT_TIMEOUT 45*1000
// max length of "abort string",
// i.e. device reply which causes termination
#define MAX_ABORT_LEN 50
, signal_handler);
#if ENABLE_FEATURE_CHAT_TTY_HIFI
+//TODO: use set_termios_to_raw()
tcgetattr(STDIN_FILENO, &tio);
tio0 = tio;
cfmakeraw(&tio);
, *argv
);
if (key >= 0) {
+ bool onoff;
// cache directive value
char *arg = *++argv;
+
+ if (!arg) {
+#if ENABLE_FEATURE_CHAT_TTY_HIFI
+ tcsetattr(STDIN_FILENO, TCSAFLUSH, &tio0);
+#endif
+ bb_show_usage();
+ }
// OFF -> 0, anything else -> 1
- bool onoff = (0 != strcmp("OFF", arg));
+ onoff = (0 != strcmp("OFF", arg));
// process directive
if (DIR_HANGUP == key) {
// turn SIGHUP on/off
llist_add_to_end(&aborts, arg);
#if ENABLE_FEATURE_CHAT_CLR_ABORT
} else if (DIR_CLR_ABORT == key) {
+ llist_t *l;
// remove the string from abort conditions
// N.B. gotta refresh maximum length too...
-#if ENABLE_FEATURE_CHAT_VAR_ABORT_LEN
+# if ENABLE_FEATURE_CHAT_VAR_ABORT_LEN
max_abort_len = 0;
-#endif
- for (llist_t *l = aborts; l; l = l->link) {
-#if ENABLE_FEATURE_CHAT_VAR_ABORT_LEN
+# endif
+ for (l = aborts; l; l = l->link) {
+# if ENABLE_FEATURE_CHAT_VAR_ABORT_LEN
size_t len = strlen(l->data);
-#endif
- if (!strcmp(arg, l->data)) {
+# endif
+ if (strcmp(arg, l->data) == 0) {
llist_unlink(&aborts, l);
continue;
}
-#if ENABLE_FEATURE_CHAT_VAR_ABORT_LEN
+# if ENABLE_FEATURE_CHAT_VAR_ABORT_LEN
if (len > max_abort_len)
max_abort_len = len;
-#endif
+# endif
}
#endif
} else if (DIR_TIMEOUT == key) {
&& poll(&pfd, 1, timeout) > 0
&& (pfd.revents & POLLIN)
) {
-#define buf bb_common_bufsiz1
llist_t *l;
ssize_t delta;
+#define buf bb_common_bufsiz1
+ setup_common_bufsiz();
// read next char from device
if (safe_read(STDIN_FILENO, buf+buf_len, 1) > 0) {
full_write(record_fd, buf+buf_len, 1);
}
// dump device input if ECHO ON
- if (echo > 0) {
+ if (echo) {
// if (buf[buf_len] < ' ') {
// full_write(STDERR_FILENO, "^", 1);
// buf[buf_len] += '@';
projects / oweals / busybox.git / blobdiff