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
|
#######################################################################
# Include: Declaration of core variables and some sanity checks #
#######################################################################
# wrapper for xmlstarlet to add node with attributes and value
# to the machine configuration
# Usage:
# add_node <parent> <newnode> <attrs...>
# E.g:
# add_node "/VirtualBox" "Machine" "uuid=1234"
add_node() {
if [ $# -lt 2 ]; then
writelog "${FUNCNAME[0]} requires 2 or more args, $# given."
return 1
fi
local PARENT="$1"
shift
if isempty PARENT; then
writelog "${FUNCNAME[0]} empty parent given!"
return 1
fi
local NODE="$1"
shift
if isempty NODE; then
writelog "${FUNCNAME[0]} empty node given!"
return 1
fi
# if parent does not exists, create it aswell
if ! node_exists "${PARENT}"; then
add_node "${PARENT%/*}" "${PARENT##*/}"
fi
# now go over the list of attributes and directly create
# the xmlstarlet syntax string: -t attr -n <key> -v <value>
local ATTRS_OPTS=
while [ $# -ne 0 ]; do
# expects key=value syntax
local key="${1%=*}"
local value="${1#*=}"
shift
if isempty key || isempty value; then
writelog "${FUNCNAME[0]} expecting key=value, got: $1"
cleanexit 1
fi
# the xmlstarlet internal newnode var references the newly created node
ATTRS_OPTS+=" -i \$newnode -t attr -n ${key} -v ${value}"
done
# args parsed, now create the node using xmlstarlet
# insert namespace to xpath expression
PARENT="$(print_namespaced "x" "${PARENT}")"
# create node and set the internal variable newnode to it
# to then add the attributes to it
local ret
xmlstarlet ed -L -N x="${VBOX_NAMESPACE}" \
-s "${PARENT}" -t elem -n "${NODE}" \
--var newnode '$prev' \
${ATTRS_OPTS} \
"${TMPCONFIG}"
ret=$?
if [ "$ret" -ne 0 ]; then
writelog "${FUNCNAME[0]} failed with '$ret' for args: $@"
fi
return $ret
}
# set_attr <node_xpath> <attr> <value>
set_attr() {
if [ $# -ne 3 ]; then
writelog "${FUNCNAME[0]} requires 3 args, $# given."
return 1
fi
if [ -z "$1" -o -z "$2" -o -z "$3" ]; then
writelog "${FUNCNAME[0]} empty arguments given: $@"
return 1
fi
if ! node_exists "$1"; then
add_node "${1%/*}" "${1##*/}" \
"$2=$3"
else
local ret
if ! attr_exists "$1" "$2"; then
xmlstarlet ed -L -N x="${VBOX_NAMESPACE}" \
-i "$(print_namespaced "x" "$1")" \
-t attr -n "$2" -v "$3" \
"${TMPCONFIG}"
ret=$?
else
xmlstarlet ed -L -N x="${VBOX_NAMESPACE}" \
-u "$(print_namespaced "x" "$1")/@$2" \
-v "$3" \
"${TMPCONFIG}"
ret=$?
fi
if [ "$ret" -ne 0 ]; then
writelog "${FUNCNAME[0]} failed with '$ret' for args: $@"
fi
return $ret
fi
}
# del_node <node_xpath>
del_node() {
if [ $# -ne 1 ]; then
writelog "${FUNCNAME[0]} requires one arg, $# given."
return 1
fi
if [ -z "$1" ]; then
writelog "${FUNCNAME[0]} empty xpath expression given."
return 1
fi
local ret
xmlstarlet ed -L -N x="${VBOX_NAMESPACE}" \
-d "$(print_namespaced "x" "$1")" \
"${TMPCONFIG}"
ret=$?
if [ "$ret" -ne 0 ]; then
writelog "${FUNCNAME[0]} failed with '$ret' for args: $@"
fi
return $ret
}
# attr_exists <node_xpath> <attr_name>
attr_exists() {
if [ $# -ne 2 ]; then
writelog "${FUNCNAME[0]} requires node and attribute as args, $# given."
return 1
fi
if [ -z "$1" -o -z "$2" ]; then
writelog "${FUNCNAME[0]} some arguments were empty: $@"
fi
xmlstarlet -q sel -N x="${VBOX_NAMESPACE}" \
-t -v "$(print_namespaced "x" "$1")/@$2" \
"${TMPCONFIG}"
ret=$?
if [ "$ret" -ne 0 ]; then
writelog "${FUNCNAME[0]} failed with '$ret' for args: $@"
fi
return $ret
}
# node_exists <node_xpath>
node_exists() {
if [ $# -ne 1 ]; then
writelog "${FUNCNAME[0]} requires one arg, $# given."
return 1
fi
if [ -z "$1" ]; then
writelog "${FUNCNAME[0]} empty xpath expression given."
return 1
fi
xmlstarlet -q sel -N x="${VBOX_NAMESPACE}" \
-t -c "$(print_namespaced "x" "$1")" \
"${TMPCONFIG}"
ret=$?
if [ "$ret" -ne 0 ]; then
writelog "${FUNCNAME[0]} failed with '$ret' for args: $@"
fi
return $ret
}
# adds the vbox namespace to an xpath expression using
# the given placeholder for it.
# e.g. print_namespaced "x" "/VirtualBox/Machine"
# would echo "/x:VirtualBox/x:Machine"
print_namespaced() {
if [ $# -ne 2 ]; then
writelog "${FUNCNAME[0]} expects 2 arguments, $# given."
cleanexit 1
fi
# add namespace on single '/' not doubles!
sed -E 's,(/)*/,\1/'"$1"':,g' <<< "$2"
}
gen_uuid() {
local UUID="$(cat /proc/sys/kernel/random/uuid)"
notempty UUID && echo $UUID && return 0
# fallback using $RANDOM
UUID=
while [ ${#UUID} -lt 32 ]; do
UUID="$UUID$RANDOM"
done
# sequence might be larger than 32, cut it and insert dashes
echo -n "${UUID:0:32}" | \
sed -E 's,(.{8})(.{4})(.{4})(.{4})(.{12}),\1-\2-\3-\4-\5,'
}
init_core() {
# check for variables that should have been set by the generic run-virt
if ! isset VM_CLEANNAME IMG_BASENAME SRC_IMG_ABSOLUTE VM_OS_TYPE; then
local MSG="Incomplete A required variable was not set by generic run-virt."
slxlog "virt-vbox-init" "${MSG}"
writelog "${MSG}"
error_user "Wichtige variablen, die das VBox Plugin benötigt, wurden nicht
gesetzt. Kann die VM nicht starten."
cleanexit 1
fi
# Check for vbox binaries in VBOX_BASE_DIR
for BIN in VBoxManage VirtualBox VBoxHeadless; do
if ! [ -x "${VBOX_BASE_DIR}/${BIN}" ]; then
local MSG="${BIN} not found in ${VBOX_BASE_DIR}."
writelog "${MSG}"
slxlog "virt-vbox-bin" "${MSG}"
cleanexit 1
fi
done
# check if the systemd vbox setup service ran successfully
if ! systemctl is-active vbox.service; then
local STATUSDUMP=$(mktemp)
systemctl status vbox.service > "$STATUSDUMP"
slxlog "virt-vbox-env" "vbox.service failed to start properly" "$STATUSDUMP"
EXIT_TYPE="internal" EXIT_REASON="VirtualBox wurde nicht richtig initialisiert!" cleanexit 1
fi
# validate that TMPCONFIG is actually an xml file
if ! xmlstarlet val "$TMPCONFIG"; then
slxlog "virt-vbox-noxml" "Downloaded machine description was not a valid xml." "$TMPCONFIG"
EXIT_TYPE="internal" EXIT_REASON="Die VM-Konfiguration ist keine valide VirtualBox-Datei!
Ihren Satelliten scheint VirtualBox nicht zu unterstützen." cleanexit 1
fi
# Define which features the VMware plugin supports
# Session specific dir for VM configs
declare -rg VBOX_ROOT="/tmp/virt/${PLUGIN_ID}/${USER}.$$"
declare -rg VBOX_MACHINES_DIR="${VBOX_ROOT}/Machines"
declare -rg VBOX_SNAPSHOT_DIR="${VBOX_MACHINES_DIR}/${VM_CLEANNAME}/Snapshots"
if ! mkdir -p "${VBOX_SNAPSHOT_DIR}"; then
writelog "Failed to create '${VBOX_SNAPSHOT_DIR}'."
cleanexit 1
fi
declare -rg VBOX_HDD_DIR="${VBOX_ROOT}/HardDisks"
if ! mkdir -p "${VBOX_HDD_DIR}"; then
writelog "Failed to create '${VBOX_HDD_DIR}'."
cleanexit 1
fi
# Virtualbox configuration dir instead of $HOME/.VirtualBox
export VBOX_USER_HOME="${VBOX_ROOT}"
# xml namespace for vbox configs
declare -rg VBOX_NAMESPACE="http://www.virtualbox.org/"
# path to the main machine configuration file
declare -rg VBOX_MACHINE_CONFIG="${VBOX_MACHINES_DIR}/${VM_CLEANNAME}/${VM_CLEANNAME}.xml"
writelog "Directories:"
writelog "\tConfig dir:\t\t$VBOX_ROOT"
writelog "\tMachines dir:\t\t$VBOX_MACHINES_DIR"
writelog "\tSnapshots dir:\t\t$VBOX_SNAPSHOT_DIR"
}
call_post_source init_core
|