summaryrefslogtreecommitdiff
path: root/test/system/500-networking.bats
blob: 654bd5d8a80a8a35315b80d16cd3e49fd2e2ee57 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
#!/usr/bin/env bats   -*- bats -*-
#
# Test podman local networking
#

load helpers

@test "podman network - basic tests" {
    heading="*NETWORK*ID*NAME*VERSION*PLUGINS*"
    run_podman network ls
    if  [[ ${output} != ${heading} ]]; then
       die "network ls expected heading is not available"
    fi

    run_podman network ls --noheading
    if  [[ ${output} = ${heading} ]]; then
       die "network ls --noheading did not remove heading: $output"
    fi
}

# Copied from tsweeney's https://github.com/containers/podman/issues/4827
@test "podman networking: port on localhost" {
    skip_if_remote "FIXME: reevaluate this one after #7360 is fixed"
    random_1=$(random_string 30)
    random_2=$(random_string 30)

    HOST_PORT=8080
    SERVER=http://127.0.0.1:$HOST_PORT

    # Create a test file with random content
    INDEX1=$PODMAN_TMPDIR/hello.txt
    echo $random_1 > $INDEX1

    # Bind-mount this file with a different name to a container running httpd
    run_podman run -d --name myweb -p "$HOST_PORT:80" \
            --restart always \
            -v $INDEX1:/var/www/index.txt \
            -w /var/www \
            $IMAGE /bin/busybox-extras httpd -f -p 80
    cid=$output

    # In that container, create a second file, using exec and redirection
    run_podman exec -i myweb sh -c "cat > index2.txt" <<<"$random_2"
    # ...verify its contents as seen from container.
    run_podman exec -i myweb cat /var/www/index2.txt
    is "$output" "$random_2" "exec cat index2.txt"

    # Verify http contents: curl from localhost
    run curl -s $SERVER/index.txt
    is "$output" "$random_1" "curl 127.0.0.1:/index.txt"
    run curl -s $SERVER/index2.txt
    is "$output" "$random_2" "curl 127.0.0.1:/index2.txt"

    # Verify http contents: wget from a second container
    run_podman run --rm --net=host $IMAGE wget -qO - $SERVER/index.txt
    is "$output" "$random_1" "podman wget /index.txt"
    run_podman run --rm --net=host $IMAGE wget -qO - $SERVER/index2.txt
    is "$output" "$random_2" "podman wget /index2.txt"

    # Tests #4889 - two-argument form of "podman ports" was broken
    run_podman port myweb
    is "$output" "80/tcp -> 0.0.0.0:$HOST_PORT" "port <cid>"
    run_podman port myweb 80
    is "$output" "0.0.0.0:$HOST_PORT"  "port <cid> 80"
    run_podman port myweb 80/tcp
    is "$output" "0.0.0.0:$HOST_PORT"  "port <cid> 80/tcp"

    run_podman 125 port myweb 99/tcp
    is "$output" 'Error: failed to find published port "99/tcp"'

    # Tests #10310: podman will restart slirp4netns on container restart
    run_podman container inspect --format "{{.State.Pid}}" $cid
    pid=$output

    # Kill the process; podman restart policy will bring up a new container.
    # -9 is crucial: busybox httpd ignores all other signals.
    kill -9 $pid
    # Wait for process to exit
    retries=30
    while kill -0 $pid; do
        sleep 0.5
        retries=$((retries - 1))
        if [[ $retries -eq 0 ]]; then
            die "Process $pid (container $cid) refused to die"
        fi
    done

    # Wait for container to restart
    retries=20
    while :;do
        run_podman container inspect --format "{{.State.Pid}}" myweb
        # pid is 0 as long as the container is not running
        if [[ $output -ne 0 ]]; then
            if [[ $output == $pid ]]; then
                die "This should never happen! Restarted container has same PID ($output) as killed one!"
            fi
            break
        fi
        sleep 0.5
        retries=$((retries - 1))
        if [[ $retries -eq 0 ]]; then
            die "Timed out waiting for container to restart"
        fi
    done

    # Verify http contents again: curl from localhost
    # Use retry since it can take a moment until the new container is ready
    run curl --retry 2 -s $SERVER/index.txt
    is "$output" "$random_1" "curl 127.0.0.1:/index.txt after restart"

    # Clean up
    run_podman stop -t 1 myweb
    run_podman rm myweb
}

# Issue #5466 - port-forwarding doesn't work with this option and -d
@test "podman networking: port with --userns=keep-id" {
    # FIXME: randomize port, and create second random host port
    myport=54321

    for cidr in "" "$(random_rfc1918_subnet).0/24"; do
        myport=$(( myport + 1 ))
        if [[ -z $cidr ]]; then
            # regex to match that we are in 10.X subnet
            match="10\..*"
        else
            # Issue #9828 make sure a custom slir4netns cidr also works
            network_arg="--network slirp4netns:cidr=$cidr"
            # slirp4netns interface ip is always .100
            match="${cidr%.*}.100"
        fi

        # Container will exit as soon as 'nc' receives input
        # We use '-n -v' to give us log messages showing an incoming connection
        # and its IP address; the purpose of that is guaranteeing that the
        # remote IP is not 127.0.0.1 (podman PR #9052).
        # We could get more parseable output by using $NCAT_REMOTE_ADDR,
        # but busybox nc doesn't support that.
        run_podman run -d --userns=keep-id $network_arg -p 127.0.0.1:$myport:$myport \
                   $IMAGE nc -l -n -v -p $myport
        cid="$output"

        # emit random string, and check it
        teststring=$(random_string 30)
        echo "$teststring" | nc 127.0.0.1 $myport

        run_podman logs $cid
        # Sigh. We can't check line-by-line, because 'nc' output order is
        # unreliable. We usually get the 'connect to' line before the random
        # string, but sometimes we get it after. So, just do substring checks.
        is "$output" ".*listening on \[::\]:$myport .*" "nc -v shows right port"

        # This is the truly important check: make sure the remote IP is not 127.X.
        is "$output" \
           ".*connect to \[::ffff:$match*\]:$myport from \[::ffff:$match\]:.*" \
           "nc -v shows remote IP address is not 127.0.0.1"
        is "$output" ".*${teststring}.*" "test string received on container"

        # Clean up
        run_podman wait $cid
        run_podman rm $cid
    done
}

@test "podman run with slirp4ns assigns correct gateway address to host.containers.internal" {
    CIDR="$(random_rfc1918_subnet)"
    run_podman run --network slirp4netns:cidr="${CIDR}.0/24" \
                $IMAGE grep 'host.containers.internal' /etc/hosts
    is "$output"   "${CIDR}.2 host.containers.internal"   "host.containers.internal should be the cidr+2 address"
}

@test "podman run with slirp4ns adds correct dns address to resolv.conf" {
    CIDR="$(random_rfc1918_subnet)"
    run_podman run --network slirp4netns:cidr="${CIDR}.0/24" \
                $IMAGE grep "${CIDR}" /etc/resolv.conf
    is "$output"   "nameserver ${CIDR}.3"   "resolv.conf should have slirp4netns cidr+3 as a nameserver"
}

@test "podman run with slirp4ns assigns correct ip address container" {
    CIDR="$(random_rfc1918_subnet)"
    run_podman run --network slirp4netns:cidr="${CIDR}.0/24" \
                $IMAGE sh -c "ip address | grep ${CIDR}"
    is "$output"   ".*inet ${CIDR}.100/24 \+"   "container should have slirp4netns cidr+100 assigned to interface"
}

# "network create" now works rootless, with the help of a special container
@test "podman network create" {
    myport=54322

    local mynetname=testnet-$(random_string 10)
    local mysubnet=$(random_rfc1918_subnet)

    run_podman network create --subnet "${mysubnet}.0/24" $mynetname
    is "$output" ".*/cni/net.d/$mynetname.conflist" "output of 'network create'"

    # (Assert that output is formatted, not a one-line blob: #8011)
    run_podman network inspect $mynetname
    if [[ "${#lines[*]}" -lt 5 ]]; then
	die "Output from 'pod inspect' is only ${#lines[*]} lines; see #8011"
    fi

    run_podman run --rm --network $mynetname $IMAGE ip a
    is "$output" ".* inet ${mysubnet}\.2/24 brd ${mysubnet}\.255 " \
       "sdfsdf"

    run_podman run -d --network $mynetname -p 127.0.0.1:$myport:$myport \
	       $IMAGE nc -l -n -v -p $myport
    cid="$output"

    # emit random string, and check it
    teststring=$(random_string 30)
    echo "$teststring" | nc 127.0.0.1 $myport

    run_podman logs $cid
    # Sigh. We can't check line-by-line, because 'nc' output order is
    # unreliable. We usually get the 'connect to' line before the random
    # string, but sometimes we get it after. So, just do substring checks.
    is "$output" ".*listening on \[::\]:$myport .*" "nc -v shows right port"

    # This is the truly important check: make sure the remote IP is
    # in the 172.X range, not 127.X.
    is "$output" \
       ".*connect to \[::ffff:172\..*\]:$myport from \[::ffff:172\..*\]:.*" \
       "nc -v shows remote IP address in 172.X space (not 127.0.0.1)"
    is "$output" ".*${teststring}.*" "test string received on container"

    # Cannot create network with the same name
    run_podman 125 network create $mynetname
    is "$output" "Error: the network name $mynetname is already used" \
       "Trying to create an already-existing network"

    run_podman rm $cid
    run_podman network rm $mynetname
    run_podman 1 network rm $mynetname
}

@test "podman network reload" {
    skip_if_remote "podman network reload does not have remote support"
    skip_if_rootless "podman network reload does not work rootless"

    random_1=$(random_string 30)
    HOST_PORT=12345
    SERVER=http://127.0.0.1:$HOST_PORT

    # Create a test file with random content
    INDEX1=$PODMAN_TMPDIR/hello.txt
    echo $random_1 > $INDEX1

    # Bind-mount this file with a different name to a container running httpd
    run_podman run -d --name myweb -p "$HOST_PORT:80" \
	       -v $INDEX1:/var/www/index.txt \
	       -w /var/www \
	       $IMAGE /bin/busybox-extras httpd -f -p 80
    cid=$output

    run_podman inspect $cid --format "{{.NetworkSettings.IPAddress}}"
    ip="$output"
    run_podman inspect $cid --format "{{.NetworkSettings.MacAddress}}"
    mac="$output"

    # Verify http contents: curl from localhost
    run curl -s $SERVER/index.txt
    is "$output" "$random_1" "curl 127.0.0.1:/index.txt"

    # flush the CNI iptables here
    run iptables -t nat -F CNI-HOSTPORT-DNAT

    # check that we cannot curl (timeout after 5 sec)
    run timeout 5 curl -s $SERVER/index.txt
    if [ "$status" -ne 124 ]; then
	die "curl did not timeout, status code: $status"
    fi

    # reload the network to recreate the iptables rules
    run_podman network reload $cid
    is "$output" "$cid" "Output does not match container ID"

    # check that we still have the same mac and ip
    run_podman inspect $cid --format "{{.NetworkSettings.IPAddress}}"
    is "$output" "$ip" "IP address changed after podman network reload"
    run_podman inspect $cid --format "{{.NetworkSettings.MacAddress}}"
    is "$output" "$mac" "MAC address changed after podman network reload"

    # check that we can still curl
    run curl -s $SERVER/index.txt
    is "$output" "$random_1" "curl 127.0.0.1:/index.txt"

    # make sure --all is working and that this
    # cmd also works if the iptables still exists
    run_podman network reload --all
    is "$output" "$cid" "Output does not match container ID"

    # check that we can still curl
    run curl -s $SERVER/index.txt
    is "$output" "$random_1" "curl 127.0.0.1:/index.txt"

    # cleanup the container
    run_podman rm -f $cid
}

@test "podman rootless cni adds /usr/sbin to PATH" {
    is_rootless || skip "only meaningful for rootless"

    local mynetname=testnet-$(random_string 10)
    run_podman network create $mynetname

    # Test that rootless cni adds /usr/sbin to $PATH
    # iptables is located under /usr/sbin and is needed for the CNI plugins.
    # Debian doesn't add /usr/sbin to $PATH for rootless users so we have to add it.
    PATH=/usr/local/bin:/usr/bin run_podman run --rm --network $mynetname $IMAGE ip addr
    is "$output" ".*eth0.*" "Interface eth0 not found in ip addr output"

    run_podman network rm -f $mynetname
}

# vim: filetype=sh