Operating system name and version: SUSE11.1 / Ubuntu 10.1 / any
Version of smsd: 3.1.11
Smsd installed from: smstools3.kekekasvi.com site
Name and model of a modem / phone: Multitech MultiModem Wireless EDGE via Ethernet Interface
Interface: LAN


Hello

I would like to send Alert SMSs from eg. a Nagios via my LAN Modem, but even just trying with the sendsms command it only results in this error message in the log file: "put_command expected (OK)|(ERROR), timeout occurred".

My SMSD.CONF

GNU nano 2.0.7 File: /etc/smsd.conf Modified

devices = GSM1

outgoing = /var/spool/sms/outgoing
checked = /var/spool/sms/checked
failed = /var/spool/sms/outgoing
sent = /var/spool/sms/sent
incoming = /var/spool/sms/incoming
logfile = /var/log/smsd.log
loglevel = 7
blocktime = 10

infofile = /var/run/sms/smsd.working
pidfile = /var/run/sms/smsd.pid

[GSM1]
# this is a socket!
device = moved to private block

Hidden private text.

pin = xxxx
cs_convert = yes
keep_open = yes
incoming = yes
baudrate = 2400
send_delay = 20
rtscts = no
init1 = AT+CGDCONT=?,+CGDCONT?,+CREG?,+CSQ,+COPS?

report = yes
init2 = AT+CSQ

(you can try it remotely, the IP from the modem is public)...

this is, what I get in the logs:

2010-07-16 15:18:48,7, GSM1: Command is sent, waiting for the answer
2010-07-16 15:18:53,7, GSM1: put_command expected (OK)|(ERROR), timeout occurred. 2.
2010-07-16 15:18:53,7, GSM1: <-
2010-07-16 15:18:54,3, GSM1: Modem is not ready to answer commands (Timeouts: 0)
2010-07-16 15:18:54,6, GSM1: I have to send 1 short message for /var/spool/sms/checked/send_dm5640
2010-07-16 15:18:54,6, GSM1: Sending SMS from to 41796429445
2010-07-16 15:18:54,6, GSM1: Checking if modem is ready
2010-07-16 15:18:54,7, GSM1: -> AT
2010-07-16 15:18:54,7, GSM1: Command is sent, waiting for the answer
2010-07-16 15:18:59,7, GSM1: put_command expected (OK)|(ERROR), timeout occurred. 1.
2010-07-16 15:18:59,7, GSM1: <- <FF><FD>^X<FF><FD> <FF><FD>#<FF><FD>'
2010-07-16 15:18:59,7, GSM1: -> ^Z


What can I provide you additionally?

could anybody assist me?

thx and best regards

Bruno

The box is running telnet which wants to negotiate some things, but the smsd is not a telnet client. A socket should just be useable without any Telnet stuff.

Some modems, like Multitech Multimodem MTCBA-G-EN, work without this telnet stuff. Probably there is some setting available which may disable this?

I think that I can implement very simple telnet feature to the next version. It will not be a "real" telnet client, it just responds to every DO message with a WONT, and to every WILL message with a DONT, thus turning off all the special stuff.

I have tested this implementation with your device, and it seems to work. However, there is another strange thing which comes from your modem: some answers contain zero byte before the end of answer:

2010-07-18 18:58:10,7, GSM1: <- OK
2010-07-18 18:58:10,7, GSM1: -> AT+CIMI
2010-07-18 18:58:11,7, GSM1: Command is sent, waiting for the answer
2010-07-18 18:58:11,2, GSM1: read_from_modem: count=0, got=10: 0D[.] 0A[.] 45[E] 52[R] 52[R] 4F[O] 52[R] 0D[.] 00[.] 0A[.]

This is from the network analyzer:

00000047  41     A
00000048  54     T
00000049  2b     +
0000004A  43     C
0000004B  49     I
0000004C  4d     M
0000004D  49     I
0000004E  0d     .
                                           0000004D  0d 0a 45 52 52 4f 52 0d  00       ..ERROR. .
                                           00000056  0a                                .

With telnet (from inetutils) I also got similar data:

                                           0000004E  0d 00 0d 0a 45 52 52 4f  52       ....ERRO R
                                           00000057  0d 0a                             ..

Probably I can make a workaround for this, but have to test it more later.

When I switch Telnet off from the GPRS modem, I do not get this weird error message, but no SMS will be forwarded. Is there anybody who works with such a Ethernet "MultiTech Multimodem Wireless EDGE, GRPS, CDMA" with whom I could compare my configuration?

rgds

Bruno

Can you move your modem back to the state which was used yesterday? I could check how the patch for Telnet works, and if it works as expected, I could publish the patch here.

thank U, now the modem is back to yesterdays state.

best rgds

Bruno

It's asking for Login: but the patch does not support any authentication. Yesterday it did not require login.

It shouldn't ask for a login, but I rebootet the modem again, can you please try again?

thx

It first dropped the connection couple of times, then it sent some garbage which caused troubles with a terminal window, and now it does not answer...

It's a lunch time, I'm back in one hour or something...

I will check the connection and the modem once again, meanwhilely

From both networks I get the following, repeatedly:

# telnet <IP> <port>
Trying <IP>...
Connected to <IP>.
Escape character is '^]'.
Connection closed by foreign host.

It is still the same modem, but what have you done?

It works now, but there is no telnet stuff anymore. I also tried with plink (from putty), because it starts the session with telnet negotiation. However, your modem does not answer to telnet commands and with ordinary AT commands it works properly.

So, I cannot "test" the telnet -patch . But your device should be useable now without any patches required.

If there was no setting for disabling the telnet stuff, it may be possible that after rebooting the device, it again require those negotiations...

In that kind of case the patch may still be needed, and therefore I include it in here:

--- 3.1.11/modeminit.c 2010-06-21 13:13:44.000000000 +0300 +++ 3.1.12/modeminit.c 2010-07-19 15:43:19.000000000 +0300 @@ -445,6 +445,85 @@ return 1; } +void negotiate_with_telnet(char *answer, int *len) +{ +#define IAC '\xFF' /* Interpret as command: */ +#define DONT '\xFE' /* You are not to use option */ +#define DO '\xFD' /* Please, you use option */ +#define WONT '\xFC' /* I won't use option */ +#define WILL '\xFB' /* I will use option */ +#define SB '\xFA' /* Interpret as subnegotiation */ +#define SE '\xF0' /* End sub negotiation */ + + char *title = "Telnet"; + int idx; + int i; + int count; + char response[128]; + char command; + int got_option; + char option; + + idx = 0; + while (idx < *len) + { + if (answer[idx] == IAC && idx +1 < *len) + { + *response = 0; + count = 3; + command = answer[idx +1]; + got_option = idx +2 < *len; + option = (got_option)? answer[idx +2] : 0; + + if (command == DO && got_option) + { + snprintf(response, sizeof(response), "%c%c%c", IAC, WONT, option); + writelogfile(LOG_DEBUG, 0, "%s: Got DO for %i (0x%02X), answering WONT.", title, (int)option, option); + } + else if (command == WILL && got_option) + { + snprintf(response, sizeof(response), "%c%c%c", IAC, DONT, option); + writelogfile(LOG_DEBUG, 0, "%s: Got WILL for %i (0x%02X), answering DONT.", title, (int)option, option); + } + else if (command == WONT && got_option) + { + writelogfile(LOG_DEBUG, 0, "%s: Got WONT for %i (0x%02X), ignoring.", title, (int)option, option); + } + else if (command == SB && got_option) + { + writelogfile(LOG_DEBUG, 0, "%s: Got SB for %i (0x%02X), ignoring.", title, (int)option, option); + count = 4; + } + else if (command == SE) + { + writelogfile(LOG_DEBUG, 0, "%s: Got SE, ignoring.", title); + count = 2; + } + + if (*response) + if ((size_t)write(modem_handle, response, strlen(response)) != strlen(response)) + writelogfile(LOG_ERR, 1, "%s: Failed to send response.", title); + + for (i = idx; i +count < *len; i++) + answer[i] = answer[i +count]; + + *len -= count; + } + else + idx++; + } + + answer[*len] = 0; + +#undef IAC +#undef DONT +#undef DO +#undef WONT +#undef WILL +#undef SB +#undef SE +} + // Read max characters from modem. The function returns when it received at // least 1 character and then the modem is quiet for timeout*0.1s. // The answer might contain already a string. In this case, the answer @@ -508,9 +587,41 @@ // append a string termination character answer[count+got]=0; success=1; + + // 3.1.12: With Multitech network modem (telnet) there can be 0x00 inside the string: + if (strlen(answer) < (size_t)count + got) + { + int i, j, len; + + len = count + got; + j = 0; + for (i = 0; i < count + got; i++) + { + if (answer[i] == '\0') + { + len--; + continue; + } + + if (i > j) + answer[j] = answer[i]; + j++; + } + + answer[len] = 0; + } + } } while (timeoutcounter < timeout); + + // 3.1.12: + if (success && DEVICE_IS_SOCKET) + { + count += got; + negotiate_with_telnet(answer, &count); + } + return success; } @@ -1762,6 +1873,32 @@ { if ((n = read(modem_handle, tmp, sizeof(tmp) -1)) > 0) { + // 3.1.12: + if (log_read_from_modem) + { + char temp[SIZE_LOG_LINE]; + int i; + char *answer = tmp; + + snprintf(temp, sizeof(temp), "read_from_modem: got=%i:", n); + for (i = 0; i < n; i++) + { + if (strlen(temp) >= sizeof(temp) - 6) + { + strcpy(temp, "ERROR: too much data"); + break; + } + + sprintf(strchr(temp, 0), " %02X[%c]", (unsigned char) answer[i], ((unsigned char) answer[i] >= ' ') ? answer[i] : '.'); + } + + writelogfile(LOG_CRIT, 0, temp); + } + + // 3.1.12: + if (DEVICE_IS_SOCKET) + negotiate_with_telnet(tmp, &n); + write(STDOUT_FILENO, tmp, n); idle = 0; }

If you need this patch, save it as /tmp/patch and cd smstools3/src and run patch < /tmp/patch.

I will add it and try it out tomorrow morning, thank you a lot so far

cheers

Bruno