chat: new applet by dronnikov AT gmail.com. With all options on:

function                                             old     new   delta
chat_main                                              -    1230   +1230
unescape                                               -     135    +135
packed_usage                                       23802   23922    +120
signal_handler                                       123     131      +8
input_backward                                       123     128      +5
applet_names                                        1775    1780      +5
applet_main                                         1076    1080      +4
applet_nameofs                                       538     540      +2
exitcode                                               -       1      +1
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 6/0 up/down: 1510/0)           Total: 1510 bytes

diff --git a/include/applets.h b/include/applets.h
index 90b6e70..1c654cd 100644 (file)
--- a/include/applets.h
+++ b/include/applets.h
@@ -93,6 +93,7 @@ USE_BZIP2(APPLET(bzip2, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_CAL(APPLET(cal, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_CAT(APPLET_NOFORK(cat, cat, _BB_DIR_BIN, _BB_SUID_NEVER, cat))
 USE_CATV(APPLET(catv, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_CHAT(APPLET(chat, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_CHATTR(APPLET(chattr, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_CHCON(APPLET(chcon, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_CHGRP(APPLET_NOEXEC(chgrp, chgrp, _BB_DIR_BIN, _BB_SUID_NEVER, chgrp))

diff --git a/include/usage.h b/include/usage.h
index d187882..0422c7f 100644 (file)
--- a/include/usage.h
+++ b/include/usage.h
@@ -204,6 +204,15 @@ USE_FEATURE_BRCTL_FANCY("\n" \
        "       -e      End each line with $\n" \
        "       -t      Show tabs as ^I\n" \
        "       -v      Don't use ^x or M-x escapes"
+
+#define chat_trivial_usage \
+       "EXPECT [SEND [EXPECT [SEND...]]]"
+#define chat_full_usage \
+       "Useful for interacting with a modem connected to stdin/stdout.\n" \
+       "A script consists of one or more \"expect-send\" pairs of strings,\n" \
+       "each pair is a pair of arguments. Example:\n" \
+       "chat '' ATZ OK ATD123456 CONNECT '' ogin: pppuser word: ppppass '~'" \
+
 #define chattr_trivial_usage \
        "[-R] [-+=AacDdijsStTu] [-v version] files..."
 #define chattr_full_usage \

diff --git a/miscutils/Config.in b/miscutils/Config.in
index d64d053..9df1b0e 100644 (file)
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -19,6 +19,66 @@ config BBCONFIG
          The bbconfig applet will print the config file with which
          busybox was built.
 
+config CHAT
+       bool "chat"
+       default n
+       help
+         Simple chat utility.
+
+config FEATURE_CHAT_NOFAIL
+       bool "Enable NOFAIL expect strings"
+       default y
+       help
+         When enabled expect strings which are started with a dash trigger
+         no-fail mode. That is when expectation is not met within timeout
+         the script is not terminated but sends next SEND string and waits
+         for next EXPECT string. This allows to compose far more flexible
+         scripts.
+
+config FEATURE_CHAT_TTY_HIFI
+       bool "Force STDIN to be a TTY"
+       default n
+       help
+         Original chat always treats STDIN as a TTY device and sets for it
+         so-called raw mode. This option turns on such behaviour.
+
+config FEATURE_CHAT_IMPLICIT_CR
+       bool "Enable implicit Carriage Return"
+       default y
+       help
+         When enabled make chat to terminate all SEND strings with a "\r"
+         unless "\c" is met anywhere in the string.
+
+config FEATURE_CHAT_SWALLOW_OPTS
+       bool "Swallow options"
+       default n
+       help
+         Busybox chat require no options. To make it not fail when used
+         in place of original chat (which has a bunch of options) turn
+         this on.
+
+config FEATURE_CHAT_SEND_ESCAPES
+       bool "Support weird SEND escapes"
+       default n
+       help
+         Original chat uses some escape sequences in SEND arguments which
+         are not sent to device but rather performs special actions.
+         E.g. "\K" means to send a break sequence to device.
+         "\d" delays execution for a second, "\p" -- for a 1/100 of second.
+         Before turning this option on think twice: do you really need them?
+
+config FEATURE_CHAT_VAR_ABORT_LEN
+       bool "Support variable-length ABORT conditions"
+       default n
+       help
+         Original chat uses fixed 50-bytes length ABORT conditions. Say N here.
+
+config FEATURE_CHAT_CLR_ABORT
+       bool "Support revoking of ABORT conditions"
+       default n
+       help
+         Support CLR_ABORT directive.
+
 config CHRT
        bool "chrt"
        default n

diff --git a/miscutils/Kbuild b/miscutils/Kbuild
index a9dc833..51187c5 100644 (file)
--- a/miscutils/Kbuild
+++ b/miscutils/Kbuild
@@ -7,6 +7,7 @@
 lib-y:=
 lib-$(CONFIG_ADJTIMEX)    += adjtimex.o
 lib-$(CONFIG_BBCONFIG)    += bbconfig.o
+lib-$(CONFIG_CHAT)        += chat.o
 lib-$(CONFIG_CHRT)        += chrt.o
 lib-$(CONFIG_CROND)       += crond.o
 lib-$(CONFIG_CRONTAB)     += crontab.o