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fd54ebff
Commit
fd54ebff
authored
Mar 18, 2015
by
Marek Vavruša
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daemon: interactive terminal (proof-of-concept)
parent
486c2a2c
Changes
4
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Showing
4 changed files
with
186 additions
and
1 deletion
+186
-1
daemon/cmd.c
daemon/cmd.c
+127
-0
daemon/cmd.h
daemon/cmd.h
+22
-0
daemon/kresolved.mk
daemon/kresolved.mk
+1
-0
daemon/main.c
daemon/main.c
+36
-1
No files found.
daemon/cmd.c
0 → 100644
View file @
fd54ebff
/* Copyright (C) 2015 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libknot/internal/mempool.h>
#include "daemon/cmd.h"
#include "lib/defines.h"
struct
cmd
{
const
char
*
name
;
int
(
*
cb
)(
struct
worker_ctx
*
,
char
*
);
};
static
int
help
(
struct
worker_ctx
*
worker
,
char
*
args
)
{
printf
(
"help:
\n
show this help
\n
"
);
printf
(
"context:
\n
show context information
\n
"
);
printf
(
"load:
\n
load module
\n
"
);
printf
(
"unload:
\n
unload module
\n
"
);
struct
kr_context
*
ctx
=
&
worker
->
resolve
;
for
(
unsigned
i
=
0
;
i
<
ctx
->
mod_loaded
;
++
i
)
{
struct
kr_module
*
mod
=
&
ctx
->
modules
[
i
];
for
(
struct
kr_prop
*
p
=
mod
->
props
;
p
&&
p
->
name
;
++
p
)
{
printf
(
"%s.%s:
\n
%s
\n
"
,
mod
->
name
,
p
->
name
,
p
->
info
);
}
}
return
kr_ok
();
}
static
int
context
(
struct
worker_ctx
*
worker
,
char
*
args
)
{
struct
kr_context
*
ctx
=
&
worker
->
resolve
;
/* Modules */
printf
(
"modules:
\n
"
);
for
(
unsigned
i
=
0
;
i
<
ctx
->
mod_loaded
;
++
i
)
{
struct
kr_module
*
mod
=
&
ctx
->
modules
[
i
];
printf
(
" %s
\n
"
,
mod
->
name
);
}
/* Options */
printf
(
"options: 0x%x
\n
"
,
ctx
->
options
);
return
kr_ok
();
}
static
int
mod_load
(
struct
worker_ctx
*
worker
,
char
*
args
)
{
struct
kr_context
*
ctx
=
&
worker
->
resolve
;
char
*
saveptr
=
NULL
;
char
*
prop_name
=
strtok_r
(
args
,
"
\t\n\r
"
,
&
saveptr
);
return
kr_context_register
(
ctx
,
prop_name
);
}
static
int
mod_unload
(
struct
worker_ctx
*
worker
,
char
*
args
)
{
return
kr_error
(
ENOTSUP
);
}
static
int
cmd_exec_prop
(
struct
worker_ctx
*
worker
,
char
*
name
,
char
*
prop
,
char
*
args
)
{
struct
kr_context
*
ctx
=
&
worker
->
resolve
;
for
(
unsigned
i
=
0
;
i
<
ctx
->
mod_loaded
;
++
i
)
{
struct
kr_module
*
mod
=
&
ctx
->
modules
[
i
];
if
(
strncmp
(
mod
->
name
,
name
,
strlen
(
mod
->
name
))
!=
0
)
{
continue
;
}
for
(
struct
kr_prop
*
p
=
mod
->
props
;
p
&&
p
->
name
;
++
p
)
{
if
(
strncmp
(
p
->
name
,
prop
,
strlen
(
p
->
name
))
==
0
)
{
auto_free
char
*
res
=
p
->
cb
(
ctx
,
mod
,
args
);
printf
(
"%s
\n
"
,
res
);
return
kr_ok
();
}
}
}
return
kr_error
(
ENOENT
);
}
int
cmd_exec
(
struct
worker_ctx
*
worker
,
char
*
cmd
)
{
static
struct
cmd
cmd_table
[]
=
{
{
"help"
,
&
help
},
{
"context"
,
&
context
},
{
"load"
,
&
mod_load
},
{
"unload"
,
&
mod_unload
},
{
NULL
,
NULL
}
};
int
ret
=
kr_error
(
ENOENT
);
char
*
args
=
strchr
(
cmd
,
' '
);
if
(
args
!=
NULL
)
{
*
args
=
'\0'
;
args
+=
1
;
}
/* Search builtin namespace. */
for
(
struct
cmd
*
c
=
cmd_table
;
c
->
name
;
++
c
)
{
if
(
strncmp
(
cmd
,
c
->
name
,
strlen
(
c
->
name
))
==
0
)
{
return
c
->
cb
(
worker
,
args
);
}
}
/* Search module namespace. */
char
*
prop
=
strchr
(
cmd
,
'.'
);
if
(
prop
!=
NULL
)
{
ret
=
cmd_exec_prop
(
worker
,
cmd
,
prop
+
1
,
args
);
}
return
ret
;
}
\ No newline at end of file
daemon/cmd.h
0 → 100644
View file @
fd54ebff
/* Copyright (C) 2015 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <uv.h>
#include "daemon/worker.h"
int
cmd_exec
(
struct
worker_ctx
*
worker
,
char
*
cmd
);
\ No newline at end of file
daemon/kresolved.mk
View file @
fd54ebff
...
...
@@ -2,6 +2,7 @@ kresolved_SOURCES := \
daemon/layer/query.c
\
daemon/udp.c
\
daemon/tcp.c
\
daemon/cmd.c
\
daemon/worker.c
\
daemon/main.c
...
...
daemon/main.c
View file @
fd54ebff
...
...
@@ -23,9 +23,33 @@
#include <libknot/internal/sockaddr.h>
#include <libknot/errcode.h>
#include "lib/defines.h"
#include "lib/resolve.h"
#include "daemon/udp.h"
#include "daemon/tcp.h"
#include "daemon/cmd.h"
static
void
tty_read
(
uv_stream_t
*
stream
,
ssize_t
nread
,
const
uv_buf_t
*
buf
)
{
if
(
stream
&&
buf
&&
nread
>
0
)
{
/* Trim endln */
char
*
cmd
=
buf
->
base
;
cmd
[
nread
-
1
]
=
'\0'
;
/* Execute */
int
ret
=
cmd_exec
((
struct
worker_ctx
*
)
stream
->
data
,
cmd
);
if
(
ret
!=
0
)
{
printf
(
"ret: %s
\n
"
,
kr_strerror
(
ret
));
}
}
printf
(
"> "
);
fflush
(
stdout
);
}
static
void
tty_alloc
(
uv_handle_t
*
handle
,
size_t
suggested
,
uv_buf_t
*
buf
)
{
buf
->
len
=
suggested
;
buf
->
base
=
malloc
(
suggested
);
}
void
signal_handler
(
uv_signal_t
*
handle
,
int
signum
)
{
...
...
@@ -124,13 +148,24 @@ int main(int argc, char **argv)
ret
=
tcp_bind
((
uv_handle_t
*
)
&
tcp_sock
,
&
worker
,
(
struct
sockaddr
*
)
&
addr
);
}
/* Allocate TTY */
uv_pipe_t
pipe
;
uv_pipe_init
(
loop
,
&
pipe
,
0
);
uv_pipe_open
(
&
pipe
,
0
);
pipe
.
data
=
&
worker
;
/* Check results */
if
(
ret
!=
KNOT_EOK
)
{
fprintf
(
stderr
,
"[system] bind to '%s' %s
\n
"
,
addr_str
,
knot_strerror
(
ret
));
ret
=
EXIT_FAILURE
;
}
else
{
/* Interactive stdin */
if
(
!
feof
(
stdin
))
{
printf
(
"[system] started in interactive mode, type 'help'
\n
"
);
tty_read
(
NULL
,
0
,
NULL
);
uv_read_start
((
uv_stream_t
*
)
&
pipe
,
tty_alloc
,
tty_read
);
}
/* Run the event loop. */
fflush
(
stdout
);
ret
=
uv_run
(
loop
,
UV_RUN_DEFAULT
);
}
...
...
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