OpenWrt – Blame information for rev 1
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
1 | office | 1 | #!/usr/bin/env bash |
2 | # |
||
3 | # Script to install host system binaries along with required libraries. |
||
4 | # |
||
5 | # Copyright (C) 2012-2017 Jo-Philipp Wich <jo@mein.io> |
||
6 | # |
||
7 | # This program is free software; you can redistribute it and/or modify |
||
8 | # it under the terms of the GNU General Public License as published by |
||
9 | # the Free Software Foundation; either version 2 of the License, or |
||
10 | # (at your option) any later version. |
||
11 | # |
||
12 | # This program is distributed in the hope that it will be useful, |
||
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
15 | # GNU General Public License for more details. |
||
16 | # |
||
17 | # You should have received a copy of the GNU General Public License |
||
18 | # along with this program; if not, write to the Free Software |
||
19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
20 | |||
21 | DIR="$1"; shift |
||
22 | |||
23 | _cp() { |
||
24 | cp ${VERBOSE:+-v} -L "$1" "$2" || { |
||
25 | echo "cp($1 $2) failed" >&2 |
||
26 | exit 1 |
||
27 | } |
||
28 | } |
||
29 | |||
30 | _mv() { |
||
31 | mv ${VERBOSE:+-v} "$1" "$2" || { |
||
32 | echo "mv($1 $2) failed" >&2 |
||
33 | exit 1 |
||
34 | } |
||
35 | } |
||
36 | |||
37 | _md() { |
||
38 | mkdir ${VERBOSE:+-v} -p "$1" || { |
||
39 | echo "mkdir($1) failed" >&2 |
||
40 | exit 2 |
||
41 | } |
||
42 | } |
||
43 | |||
44 | _ln() { |
||
45 | ln ${VERBOSE:+-v} -sf "$1" "$2" || { |
||
46 | echo "ln($1 $2) failed" >&2 |
||
47 | exit 3 |
||
48 | } |
||
49 | } |
||
50 | |||
51 | _relpath() { |
||
52 | local base="$(readlink -f "$1")" |
||
53 | local dest="$(readlink -f "$2")" |
||
54 | local up |
||
55 | |||
56 | [ -d "$base" ] || base="${base%/*}" |
||
57 | [ -d "$dest" ] || dest="${dest%/*}" |
||
58 | |||
59 | while true; do |
||
60 | case "$base" |
||
61 | in "$dest"/*) |
||
62 | echo "$up/${base#$dest/}" |
||
63 | break |
||
64 | ;; |
||
65 | *) |
||
66 | dest="${dest%/*}" |
||
67 | up="${up:+$up/}.." |
||
68 | ;; |
||
69 | esac |
||
70 | done |
||
71 | } |
||
72 | |||
73 | _runas_so() { |
||
74 | cat <<-EOT | ${CC:-gcc} -x c -fPIC -shared -o "$1" - |
||
75 | #include <unistd.h> |
||
76 | #include <stdio.h> |
||
77 | #include <stdlib.h> |
||
78 | |||
79 | int mangle_arg0(int argc, char **argv, char **env) { |
||
80 | char *arg0 = getenv("RUNAS_ARG0"); |
||
81 | |||
82 | if (arg0) { |
||
83 | argv[0] = arg0; |
||
84 | unsetenv("RUNAS_ARG0"); |
||
85 | } |
||
86 | |||
87 | return 0; |
||
88 | } |
||
89 | |||
90 | #ifdef __APPLE__ |
||
91 | __attribute__((section("__DATA,__mod_init_func"))) |
||
92 | #else |
||
93 | __attribute__((section(".init_array"))) |
||
94 | #endif |
||
95 | static void *mangle_arg0_constructor = &mangle_arg0; |
||
96 | EOT |
||
97 | |||
98 | [ -x "$1" ] || { |
||
99 | echo "compiling preload library failed" >&2 |
||
100 | exit 5 |
||
101 | } |
||
102 | } |
||
103 | |||
104 | _patch_ldso() { |
||
105 | _cp "$1" "$1.patched" |
||
106 | sed -i -e 's,/\(usr\|lib\|etc\)/,/###/,g' "$1.patched" |
||
107 | |||
108 | if "$1.patched" 2>&1 | grep -q -- --library-path; then |
||
109 | _mv "$1.patched" "$1" |
||
110 | else |
||
111 | echo "binary patched ${1##*/} not executable, using original" >&2 |
||
112 | rm -f "$1.patched" |
||
113 | fi |
||
114 | } |
||
115 | |||
116 | _patch_glibc() { |
||
117 | _cp "$1" "$1.patched" |
||
118 | sed -i -e 's,/usr/\(\(lib\|share\)/locale\),/###/\1,g' "$1.patched" |
||
119 | |||
120 | if "$1.patched" 2>&1 | grep -q -- GNU; then |
||
121 | _mv "$1.patched" "$1" |
||
122 | else |
||
123 | echo "binary patched ${1##*/} not executable, using original" >&2 |
||
124 | rm -f "$1.patched" |
||
125 | fi |
||
126 | } |
||
127 | |||
128 | for LDD in ${PATH//://ldd }/ldd; do |
||
129 | "$LDD" --version >/dev/null 2>/dev/null && break |
||
130 | LDD="" |
||
131 | done |
||
132 | |||
133 | [ -n "$LDD" -a -x "$LDD" ] || LDD= |
||
134 | |||
135 | for BIN in "$@"; do |
||
136 | [ -n "$BIN" -a -n "$DIR" ] || { |
||
137 | echo "Usage: $0 <destdir> <executable> ..." >&2 |
||
138 | exit 1 |
||
139 | } |
||
140 | |||
141 | [ ! -d "$DIR/lib" ] && { |
||
142 | _md "$DIR/lib" |
||
143 | _md "$DIR/usr" |
||
144 | _ln "../lib" "$DIR/usr/lib" |
||
145 | } |
||
146 | |||
147 | [ ! -x "$DIR/lib/runas.so" ] && { |
||
148 | _runas_so "$DIR/lib/runas.so" |
||
149 | } |
||
150 | |||
151 | LDSO="" |
||
152 | |||
153 | [ -n "$LDD" ] && [ -x "$BIN" ] && file "$BIN" | grep -sqE "ELF.*(executable|interpreter)" && { |
||
154 | for token in $("$LDD" "$BIN" 2>/dev/null); do |
||
155 | case "$token" in */*.so*) |
||
156 | dest="$DIR/lib/${token##*/}" |
||
157 | ddir="${dest%/*}" |
||
158 | |||
159 | case "$token" in |
||
160 | */ld-*.so*) LDSO="${token##*/}" ;; |
||
161 | esac |
||
162 | |||
163 | [ -f "$token" -a ! -f "$dest" ] && { |
||
164 | _md "$ddir" |
||
165 | _cp "$token" "$dest" |
||
166 | case "$token" in |
||
167 | */ld-*.so*) _patch_ldso "$dest" ;; |
||
168 | */libc.so.6) _patch_glibc "$dest" ;; |
||
169 | esac |
||
170 | } |
||
171 | ;; esac |
||
172 | done |
||
173 | } |
||
174 | |||
175 | # is a dynamically linked executable |
||
176 | if [ -n "$LDSO" ]; then |
||
177 | echo "Bundling ${BIN##*/}" |
||
178 | |||
179 | RUNDIR="$(readlink -f "$BIN")"; RUNDIR="${RUNDIR%/*}" |
||
180 | RUN="${LDSO#ld-}"; RUN="run-${RUN%%.so*}.sh" |
||
181 | REL="$(_relpath "$DIR/lib" "$BIN")" |
||
182 | |||
183 | _mv "$BIN" "$RUNDIR/.${BIN##*/}.bin" |
||
184 | |||
185 | cat <<-EOF > "$BIN" |
||
186 | #!/usr/bin/env bash |
||
187 | dir="\$(dirname "\$0")" |
||
188 | export RUNAS_ARG0="\$0" |
||
189 | export LD_PRELOAD="\$dir/${REL:+$REL/}runas.so" |
||
190 | exec "\$dir/${REL:+$REL/}$LDSO" --library-path "\$dir/${REL:+$REL/}" "\$dir/.${BIN##*/}.bin" "\$@" |
||
191 | EOF |
||
192 | |||
193 | chmod ${VERBOSE:+-v} 0755 "$BIN" |
||
194 | fi |
||
195 | done |