[Pkg-kannel-devel] Bug#893594: kannel: Failure to open GSM modems by SMSC

[Lasantha Kalubowila]

Package: kannel
Version: 1.4.4-4
Severity: important

Dear Maintainer,

Upon installing and configuring, Kannel fails to deliver SMS messages over
SMSC's using GSM modems.

The bearerbox.log indicates difficulties of routing the messages.

However, digging smsc.log reveals SMSC is unable to open the modem (ERRNO=13).
This is due to user "kannel" not having enough privileges to open the modem by default.

Adding the user "kannel" to group "dialout" resolves this issue.

I humbly suggest that the installer will have to handle this, which shall
resolve the issue.

-- System Information:
Debian Release: 9.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages kannel depends on:
ii  adduser             3.115
ii  libc6               2.24-11+deb9u3
ii  libct4              0.91-6.1+b4
ii  libhiredis0.13      0.13.3-2
ii  libmariadbclient18  10.1.26-0+deb9u1
ii  libpam0g            1.1.8-3.6
ii  libpcre3            2:8.39-3
ii  libpq5              9.6.7-0+deb9u1
ii  libsqlite0          2.8.17-14
ii  libsqlite3-0        3.16.2-5+deb9u1
ii  libssl1.0.2         1.0.2l-2+deb9u2
ii  libxml2             2.9.4+dfsg1-2.2+deb9u2
ii  psmisc              22.21-2.1+b2
ii  zlib1g              1:1.2.8.dfsg-5

kannel recommends no packages.

kannel suggests no packages.

-- Configuration Files:
/etc/default/kannel changed:
START_SMSBOX=1

/etc/kannel/kannel.conf changed:
group = core
admin-port = 13000
smsbox-port = 13001
admin-password = bar
admin-deny-ip = "*.*.*.*"
admin-allow-ip = "127.0.0.1"
log-file = "/var/log/kannel/bearerbox.log"
box-deny-ip = "*.*.*.*"
box-allow-ip = "127.0.0.1"
access-log = "/var/log/kannel/access.log"
store-location = "/var/log/kannel/kannel.store"
group = smsbox-route
smsbox-id = "VH-00_smsB-00"
smsc-id = "Wavecom-Q2303-00"
group = smsc
smsc = at
smsc-id = "Wavecom-Q2303-00"
modemtype = wavecom_a2303_00
device = /dev/ttyUSB0
sms-center = +9477000003
my-number = +94767676000
connect-allow-ip = "127.0.0.1;192.168.77.3;192.168.77.200"
sim-buffering = true
keepalive = 5
log-file = "/var/log/kannel/smsc.log"
log-level = 5
group = modems
id = wavecom_a2303_00
name = "Wavecom Q2303"
detect-string = "wavecom"
init-string = "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
message-storage = "SM"
need-sleep = true
speed = 115200
group = smsbox
smsbox-id = "VH-00_smsB-00"
bearerbox-host = 127.0.0.1
bearerbox-port = 13001
sendsms-port = 13013
global-sender = +94767676000
sendsms-chars = "0123456789 +-"
log-file = "/var/log/kannel/smsbox.log"
log-level = 1
access-log = "/var/log/kannel/access.log"
group = sendsms-user
username = tester
password = foobar
user-deny-ip = "*.*.*.*"
user-allow-ip = "127.0.0.1"
group = sendsms-user
username = nsim_user
password = IwM510FaQ653
user-deny-ip = "*.*.*.*"
user-allow-ip = "127.0.0.1;192.168.77.252;192.168.77.254"
max-messages = 4
concatenation = true
group = sms-service
keyword = SMSG-Status
allowed-prefix = "+94778811999"
text = "FLI-s004-SMSG: [%t] SMSG is running (%i)."
group = sms-service
keyword = default
text = "FLI-s004-SMSG: No service specified"
max-messages = 0


-- no debconf information

-- Log segments of bearerbox.log
2018-03-20 09:18:14 [5796] [7] DEBUG: sms_router: handling message (0x55732206f9c0 vs 0x55732206f9c0)
2018-03-20 09:18:14 [5796] [7] DEBUG: Routing failed, re-queued.

-- Log segments of smsc.log
2018-03-20 09:18:04 [5796] [6] INFO: AT2[Wavecom-Q2303-00]: opening device
2018-03-20 09:18:04 [5796] [6] ERROR: AT2[Wavecom-Q2303-00]: open failed! ERRNO=13
2018-03-20 09:18:04 [5796] [6] ERROR: System error 13: Permission denied