blob: 4908767a8da90f4365116510675f016ce1923517 (
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
|
#!/bin/false
source dependencies.bash
# Input: $BASH_RPC_REMOTE_DEST - hostname passed to ssh (uses ssh host aliases)
# Input: $BASH_RPC_SSH_OPTIONS - option arguments passed to ssh (they precede '--')
# Input: "$0" - copied to remote bash's $0
# Input: $1 - shell script source code to run in the remote bash
# Input: $2, $3, ... - command line arguments passed to the remote bash as $1, $2, ...
# Input: stdin, stdout, stderr: passed to the remote bash over ssh
# Input: "$SHELL" - remote shell to launch (better be bash)
__bashrpc__remote_run_script()
{
local script="$1"
shift
BASH_RPC_SHELL_OPTIONS=(--norc --noprofile)
# printf 'DEBUG:<%s>\n' "${BASH_RPC_SSH_OPTIONS[@]}" >&2
exec ssh \
"${BASH_RPC_SSH_OPTIONS[@]}" -- \
"${BASH_RPC_REMOTE_DEST:-localhost}" \
"$SHELL" "${BASH_RPC_SHELL_OPTIONS[@]}" \
-c "${script@Q}" \
"$0" "${@@Q}"
}
with_ssh_options() { __bashrpc__with_ssh_options "$@"; }
__bashrpc__with_ssh_options()
{
local -a BASH_RPC_SSH_OPTIONS
while [ "$1" != '--' ]
do
if [ $# -gt 0 ]
then
BASH_RPC_SSH_OPTIONS+=("$1")
shift
continue
fi
>&2 printf '%s: Error: %s\n' "$0" \
'with_ssh_options(): expected argument "--" not found'
exit 1
done
shift
"$@"
}
with_ssh_option() { __bashrpc__with_ssh_option "$@"; }
__bashrpc__with_ssh_option()
{
local -a BASH_RPC_SSH_OPTIONS=("${BASH_RPC_SSH_OPTIONS[@]}")
BASH_RPC_SSH_OPTIONS+=("$1")
shift
"$@"
}
# Preserves the rest of stdin for the command.
__bashrpc__eval_stdin()
{
[ "$1" ] && read -N"$1" -r || return
# Prepare "$@" for script execution context.
shift
# Even unset REPLY to leave pristine environment.
eval "unset REPLY; $REPLY"
}
__bashrpc__run_function_simple()
{
script_source=$(declare -f "$1" && printf '"$@";\n')
__bashrpc__remote_run_script \
"$script_source" \
"$@"
}
__bashrpc__notty_stage1()
{
[ "$1" ] &&
read -N"$1" -r && # Read script from stdin, munges REPLY
shift && # Prepare "$@" for script execution context.
eval "unset REPLY; $REPLY" # Unset munged REPLY in exec context
}
__bashrpc__remote_run_stage1_notty()
{
stage1_source=$(
declare -f __bashrpc__notty_stage1 |
sed -Ene 's/^ {4}//p'
)
stage2_source=$1
shift
{
printf '%s' "$stage2_source"
cat
} |
__bashrpc__remote_run_script \
"$stage1_source" "${#stage2_source}" \
"$@"
}
__bashrpc__read_stdin()
{
REPLY=
read -r -N2147483647 || [ "$REPLY" ]
}
__bashrpc__tty_stage1()
{
local SET_TERM="$1"
local PRELUDE="shift;${BASH_RPC_TRACE_REMOTE:+ set -x;}"
__bashrpc__read_stdin <<END
# We saved stage2 in TERM.
# Store it in parameter 1:
set -- "\$TERM" "\$@"
# Restore original TERM:
TERM=${SET_TERM@Q}
# Run stage2:
source <(printf '%s\n%s' ${PRELUDE@Q} "\$1")
END
printf '%s' "$REPLY"
}
__bashrpc__remote_run_stage1_tty()
{
stage2_source=$1
stage1_source=$(__bashrpc__tty_stage1 "$TERM" | grep -v '^#')
shift
(
# printf 'DEBUG2:<%s>\n' "${BASH_RPC_SSH_OPTIONS[@]}" >&2
TERM="$stage2_source" \
__bashrpc__with_ssh_option -t \
__bashrpc__remote_run_script \
"$stage1_source" "$@"
)
}
remote_run_function()
{
main=$1
# funcs=$(compgen -A function)
funcs=$(recursive_dependencies "$main")
stage2_source=$(
declare -f $funcs
printf '"$@"\n'
)
if [ -t 0 ]
then
__bashrpc__remote_run_stage1_tty "$stage2_source" "$@"
else
__bashrpc__remote_run_stage1_notty "$stage2_source" "$@"
fi
}
|
