This file is indexed.

/usr/bin/vcs-run is in cloud-guest-utils 0.30-0ubuntu5.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  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
#!/bin/bash
set -f

VERBOSITY=0
SUPPORTED_VCS="bzr hg git url"
RET_UNCLAIMED=3
RET_SUCCESS=0
RET_FAIL=1
DEF_COMMAND="vcs_run"

Usage() {
	cat <<EOF
Usage: ${0##*/} [ options ] repo-url [command [arguments]]

   obtain repository from repo-url, and execute 'command' with 'arguments'

   Command will default to '$DEF_COMMAND' in the top level of the repository.

   options:
      -t | --target  DIR   checkout branch to DIR [./(basename repo)]
           --vcs-type  V   repo-url is of type 'V' [auto]
                           supported: auto $SUPPORTED_VCS
      -v | --verbose       increase verbosity
      -D | --deps          attempt to install dependencies if necessary

   Example:
    * run 'stack.sh' in git://github.com/openstack-dev/devstack.git
      vcs-run --deps git://github.com/openstack-dev/devstack.git stack.sh
    * build cloud-utils
      vcs-run --deps lp:cloud-utils -- ./tools/build-deb -us -uc

EOF
}

bad_Usage() { Usage 1>&2; [ $# -eq 0 ] || error "$@"; return 1; }
error() { echo "$@" 1>&2; }
debug() {
	local level=${1}; shift;
	[ "${level}" -gt "${VERBOSITY}" ] && return
	error "${@}"
}

has_cmd() {
	command -v "$1" >/dev/null 2>&1
}

get_cmd() {
	# get_cmd(cmd, get_deps, packages)
	#   get command 'cmd' if necessary by installing 'packages'
	#   if 'get_deps' is false, then return error.
	local cmd="$1" deps="$2"
	shift 2
	has_cmd "$1" && return 0
	$deps || { error "No cmd '$cmd', but nodeps specified"; return 1; }
	apt_install "$@"
}

apt_install() {
	local cmd=""
	cmd=( env DEBIAN_FRONTEND=noninteractive apt-get --quiet
		--assume-yes install "$@" )
	[ "$(id -u)" = "0" ] ||
		cmd=( sudo "${cmd[@]}" )
	debug 1 "installing dependencies:" "${cmd[@]}"
	"${cmd[@]}"
}

vcsget_bzr() {
	# deps type src target cmd
	local deps="$1" rtype="$2" src="$3" target="$4" tmp=""
	if [ "$rtype" = "auto" ]; then
		case "$src" in
			*.bzr|bzr:*|lp:*) :;;
			*)
				if ! [ -d "$src" -a -d "$src/.bzr" ]; then
					return $RET_UNCLAIMED
				fi
				src=$(cd "$src" && pwd) || return $RET_FAIL
				;;
		esac
	fi
	get_cmd bzr "$deps" bzr || return $RET_FAIL
	if [ -z "$target" ]; then
		case "$src" in
			*/*) tmp="${src##*/}";;
			*:*) tmp="${src#*:}";;
			*)   tmp="$src"
		esac
		target="${tmp%.bzr}"
	fi
	local cmd="" q="--quiet"
	[ $VERBOSITY -gt 1 ] && q=""

	if [ -d "$target/.bzr" ]; then
		debug 1 "updating $target: bzr pull ${q:+$q }$src"
		( cd "$target" && bzr pull $q "$src" )
	else
		debug 1 "branching to $target: bzr branch ${q:+$q }$src"
		bzr branch $q "$src" "$target"
	fi
	[ $? -eq 0 ] || return $RET_FAIL
	_RET="$target"
	return 0
}

vcsget_git() {
	# deps type src target cmd
	local deps="$1" rtype="$2" src="$3" target="$4" tmp=""
	if [ "$rtype" = "auto" ]; then
		case "$src" in
			*.git|git:*) :;;
			*)
				if ! [ -d "$src" -a -d "$src/.git" ]; then
					return $RET_UNCLAIMED
				fi
				src=$(cd "$src" && pwd) || return $RET_FAIL
				;;
		esac
	fi
	get_cmd git "$deps" git || return $RET_FAIL
	if [ -z "$target" ]; then
		tmp="${src##*/}"
		target="${tmp%.git}"
	fi
	local q="--quiet"
	[ $VERBOSITY -gt 1 ] && q=""
	if [ -d "$target/.git" ]; then
		debug 1 "updating $target: git pull ${q:+$q }${src}"
		( cd "$target" && git pull $q "$src" )
	else
		debug 1 "cloning to $target: git clone ${q:+$q }$src $target"
		git clone $q "$src" "$target" || return $RET_FAIL
	fi
	[ $? -eq 0 ] || return $RET_FAIL
	_RET="$target"
	return 0
}

vcsget_hg() {
	# deps type src target cmd
	local deps="$1" rtype="$2" src="$3" target="$4" tmp=""
	if [ "$rtype" = "auto" ]; then
		case "$src" in
			*.hg|hg:*) :;;
			*) return $RET_UNCLAIMED;;
		esac
	fi
	get_cmd hg "$deps" mercurial || return $RET_FAIL
	if [ -z "$target" ]; then
		tmp="${src##*/}"
		target="${tmp%.hg}"
	fi
	local quiet="--quiet"
	[ $VERBOSITY -gt 1 ] && quiet=""
	hg clone $quiet "$src" "$target" || return $RET_FAIL
	_RET="$target"
	return 0
}

vcsget_url() {
	# deps type src target cmd
	# if target is not specified, target directory is md5sum
	# of the url.  If cmd does not start with a /, then use it
	# as the output filename.  If it does start with a /, then
	# store the url in DEF_COMMAND in this directory.
	local deps="$1" rtype="$2" src="$3" target="$4" cmd="$5" tmp=""
	if [ "$rtype" = "auto" ]; then
		case "$src" in
			http://*|https://*) :;;
			*) return $RET_UNCLAIMED;;
		esac
	fi
	get_cmd wget "$deps" wget || return $RET_FAIL
	if [ -z "$target" ]; then
		target=$(echo "$src" | md5sum)
		target=${target%  -}
	fi

	local cmdname="$cmd"
	if [ "${cmd#/}" != "$cmd" ]; then
		cmdname="./$DEF_COMMAND"
	fi

	local quiet="--quiet"
	[ $VERBOSITY -gt 1 ] && quiet=""

	mkdir -p "$target" ||
		{ error "failed mkdir -p '$target'"; return $RET_FAIL; }
	debug 1 "wget -O '$target/$cmdname' '$src'"
	wget $quiet -O "$target/$cmdname" "$src" || {
		error "failed wget -O '$target/$cmdname' '$src'"
		return $RET_FAIL
	}
	
	_RET="$target"
	return 0
}

main() {
	local short_opts="hDt:v"
	local long_opts="help,deps,target:,vcs-type:,verbose"
	local getopt_out=$(getopt --name "${0##*/}" \
		--options "${short_opts}" --long "${long_opts}" -- "$@") &&
		eval set -- "${getopt_out}" ||
		{ bad_Usage; return; }

	local cur="" next="" target="" rtype="auto" tmp=""
	local def_target="" deps="" getdeps=false arg0=""

	while [ $# -ne 0 ]; do
		cur="$1"; next="$2";
		case "$cur" in
			-h|--help) Usage ; exit 0;;
			-D|--deps) getdeps=true;;
			-t|--target) target=$next; shift;;
			   --vcs-type) rtype=$next; shift;;
			-v|--verbose) VERBOSITY=$((${VERBOSITY}+1));;
			--) shift; break;;
		esac
		shift;
	done

	[ $# -gt 0 ] || { bad_Usage "must provide at least repo"; return; }

	src_repo="$1"
	shift
	[ -n "$src_repo" ] || { error "empty source repo?"; return 1; }

	if [ -n "$target" ]; then
		tmp=$(dirname "${target}")
		[ -d "$tmp" ] || mkdir -p "$tmp" ||
			{ error "failed to create $tmp for '$target'"; return 1; }
	fi

	if [ $# -eq 0 ]; then
		set -- "$DEF_COMMAND"
	fi
	arg0="$1"

	local vcs vcslist="${SUPPORTED_VCS}"
	[ "$rtype" = "auto" ] || vcslist="$rtype"

	local workd=""
	for vcs in $vcslist; do
		has_cmd "vcsget_$vcs" ||
			{ error "unknown vcs type '$vcs'"; return 1; }
		"vcsget_$vcs" "$getdeps" "$rtype" "$src_repo" "$target" "$arg0"
		ret=$?
		case "$ret" in
			$RET_UNCLAIMED) :;; # not claimed
			$RET_SUCCESS) workd="$_RET"; break;;
			*) error "failed to get '$src_repo' of type '$vcs'";
				return $ret;;
		esac
	done

	[ -d "$workd" ] ||
		{ error "unknown source repo '$src_repo'"; return 1; }

	cd "$workd" ||
		{ error "failed to enter target dir '$workd'"; return 1; }

	if [ -f "./$1" ]; then
		if [ ! -x "./$1" ]; then
			debug 1 "adding execute to ./$1"
			chmod ugo+x "./$1" ||
				{ error "failed add execute to ./$1"; return 1; }
		fi
		tmp="./$1"
		shift
		set -- "$tmp" "$@"
	elif ! has_cmd "$1"; then
		error "command '$1' not available anywhere"
		return 1
	fi

	debug 1 "executing command in $PWD:" "$@"
	exec "$@"
}

main "$@"
# vi: ts=4 noexpandtab