Jdbshell
https://github.com/xianjimli/jdbshell
/*
* File: jdbshell.c
* Author: Li XianJing <xianjimli@hotmail.com>
* Brief: a shell for gdb.
*
* Copyright (c) 2009 topwise, Inc.
*
* Licensed under the Academic Free License version 2.1
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* History:
* ================================================================
* 2009-07-08 Li XianJing <xianjimli@hotmail.com> created
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <readline/readline.h>
#include <readline/history.h>
#include <sys/types.h>
#include <signal.h>
static const char* commands[] =
{
"class",
"classes",
"classpath",
"clear",
"connectors",
"cont",
"disablegc",
"down",
"dump",
"enablegc",
"eval",
"exit",
"fields",
"help",
"interrupt",
"kill",
"list",
"locals",
"lock",
"methods",
"monitor",
"next",
"pop",
"print",
"read",
"reenter",
"resume",
"run",
"set",
"step",
"stepi",
"stop",
"suspend",
"thread",
"threadgroup",
"threadgroups",
"threadlocks",
"threads",
"trace",
"unmonitor",
"untrace",
"up",
"version",
"where",
"wherei",
NULL
};
static struct Alias
{
const char* alias;
const char* command;
}g_alias[] =
{
{"c", "cont"},
{"l", "list"},
{"n", "next"},
{"r", "run"},
{"s", "step"},
{"si", "stepi"},
{"f", "step up"},
{"bt", "wherei"},
{NULL, NULL}
};
static char* command_generator(const char *text, int state)
{
const char *name;
static int list_index, len;
if (!state)
{
list_index = 0;
len = strlen (text);
}
while (name = commands[list_index])
{
list_index++;
if (strncmp (name, text, len) == 0)
return strdup(name);
}
return ((char *)NULL);
}
char** command_completion (const char *text, int start, int end)
{
char **matches = NULL;
if (start == 0)
matches = rl_completion_matches (text, command_generator);
return (matches);
}
void initialize_readline ()
{
rl_readline_name = "jdbshell";
rl_attempted_completion_function = command_completion;
return ;
}
char * stripwhite (char *string)
{
char *s = NULL;
char *t = NULL;
for (s = string; whitespace (*s); s++);
if (*s == 0) return (s);
t = s + strlen (s) - 1;
while (t > s && whitespace (*t))t--;
*++t = '\0';
return s;
}
void show_usage(void)
{
int i = 0;
fprintf(stderr, "usage: jdbshell [jdb args]\n");
fprintf(stderr, "example: ./jdbshell -sourcepath $ANDROID_SRC_PATH -attach 6107\n");
fprintf(stderr, "command alias:\n");
for(i = 0; g_alias[i].alias != NULL; i++)
{
fprintf(stderr, " %2s -- %s\n", g_alias[i].alias, g_alias[i].command);
}
return;
}
int main (int argc, char **argv)
{
int pid = 0;
char *line = NULL;
char *s = NULL;
char last_cmd[1024] = {0};
int parent_to_child[2] = {0};
if(argc == 1)
{
show_usage();
return 0;
}
initialize_readline ();
pipe(parent_to_child);
pid = fork();
if(pid == 0)
{
close(parent_to_child[1]);
dup2(parent_to_child[0], STDIN_FILENO);
strcpy(argv[0], "jdb");
int ret = execvp("jdb", argv);
fprintf(stderr, "jdb exit: ret=%d\n", ret);
}
else
{
close(parent_to_child[0]);
write(parent_to_child[1], "threads\n",strlen("threads\n"));
while(1)
{
int i = 0;
line = readline ("");
if (!line) break;
s = stripwhite (line);
if(*s)
{
add_history (s);
strncpy(last_cmd, s, sizeof(last_cmd)-1);
}
else if(last_cmd[0])
{
s = last_cmd;
printf(">%s\n", s);
}
else
{
free (line);
printf(">");
continue;
}
for(i = 0; g_alias[i].alias != NULL; i++)
{
int len = strlen(g_alias[i].alias);
if(strncmp(g_alias[i].alias, s, len) == 0
&& (s[len] == ' ' || s[len] == '\0' || s[len] == '\t'))
{
write(parent_to_child[1], g_alias[i].command,
strlen(g_alias[i].command));
break;
}
}
if(g_alias[i].alias == NULL)
{
write(parent_to_child[1], s, strlen(s));
}
if(write(parent_to_child[1], "\n", 1) <= 0)
{
fprintf(stderr, "jdb exited\n");
break;
}
free (line);
}
kill(pid, SIGTERM);
}
return 0;
}
- 因為我基本上每次一開始都要執行threads變量，所以我在開始wile循環前加了一句話
else
{
close(parent_to_child[0]);
write(parent_to_child[1], "threads\n",strlen("threads\n"));
CFLAGS=-DRL_LIBRARY_VERSION='"5.1"' -I. -I.. -g -O
all:
gcc $(CFLAGS) jdbshell.c -lreadline -ltermcap -o jdbshell
clean:
rm -f jdbshell *.o
- build/envsetup.sh 仿照gdbclient，在build/envsetup.sh中加入jdbclient函數
function jdbclient()
{
local MY_SRC_PATH="$1"
if [ "$MY_SRC_PATH" ] ; then
MY_SRC_PATH=$1
echo $MY_SRC_PATH
else
echo "ROOT" $OUR_ROOT
MY_SRC_PATH="app_process"
fi
local PORT="$2"
if [ "$PORT" ] ; then
PORT=$2
else
PORT=":9000"
fi
local PID
local PROG="$3"
if [ "$PROG" ] ; then
PID=`pid $3`
echo tcp$PORT jdwp$PID
adb forward "tcp$PORT" "jdwp:$PID"
echo jdbshell -sourcepath $MY_SRC_PATH -attach localhost$PORT
jdbshell -sourcepath $MY_SRC_PATH -attach localhost$PORT
sleep 2
else
echo ""
echo "please specify app you want to debug:"
echo ""
fi
}
export ANDROID_SRC=/opt/work/android/grepcode.com
export ANDROID_SRC_PATH=$ANDROID_SRC/frameworks/base/opengl/java:$ANDROID_SRC/frameworks/base/awt/java:$ANDROID_SRC/frameworks/base/core/java:$ANDROID_SRC/frameworks/base/location/java:$ANDROID_SRC/frameworks/base/sax/java:$ANDROID_SRC/frameworks/base/graphics/java:$ANDROID_SRC/frameworks/base/telephony/java:$ANDROID_SRC/frameworks/base/services/java:$ANDROID_SRC/frameworks/base/media/java:$ANDROID_SRC/frameworks/base/wifi/java:$ANDROID_SRC/frameworks/base/im/java:$ANDROID_SRC/dalvik/libcore/suncompat/src/main/java:$ANDROID_SRC/dalvik/libcore/nio_char/src/main/java:$ANDROID_SRC/dalvik/libcore/nio_char/src/main/java/java:$ANDROID_SRC/dalvik/libcore/security-kernel/src/main/java:$ANDROID_SRC/dalvik/libcore/security-kernel/src/main/java/java:$ANDROID_SRC/dalvik/libcore/security/src/main/java:$ANDROID_SRC/dalvik/libcore/security/src/main/java/java:$ANDROID_SRC/dalvik/libcore/archive/src/main/java:$ANDROID_SRC/dalvik/libcore/archive/src/main/java/java:$ANDROID_SRC/dalvik/libcore/awt-kernel/src/main/java:$ANDROID_SRC/dalvik/libcore/awt-kernel/src/main/java/java:$ANDROID_SRC/dalvik/libcore/luni/src/main/java:$ANDROID_SRC/dalvik/libcore/luni/src/main/java/java:$ANDROID_SRC/dalvik/libcore/math/src/main/java:$ANDROID_SRC/dalvik/libcore/math/src/main/java/java:$ANDROID_SRC/dalvik/libcore/x-net/src/main/java:$ANDROID_SRC/dalvik/libcore/openssl/src/main/java:$ANDROID_SRC/dalvik/libcore/dalvik/src/main/java:$ANDROID_SRC/dalvik/libcore/auth/src/main/java:$ANDROID_SRC/dalvik/libcore/concurrent/src/main/java:$ANDROID_SRC/dalvik/libcore/concurrent/src/main/java/java:$ANDROID_SRC/dalvik/libcore/sql/src/main/java:$ANDROID_SRC/dalvik/libcore/sql/src/main/java/java:$ANDROID_SRC/dalvik/libcore/prefs/src/main/java:$ANDROID_SRC/dalvik/libcore/prefs/src/main/java/java:$ANDROID_SRC/dalvik/libcore/xml/src/main/java:$ANDROID_SRC/dalvik/libcore/text/src/main/java:$ANDROID_SRC/dalvik/libcore/text/src/main/java/java:$ANDROID_SRC/dalvik/libcore/luni-kernel/src/main/java:$ANDROID_SRC/dalvik/libcore/luni-kernel/src/main/java/java:$ANDROID_SRC/dalvik/libcore/regex/src/main/java:$ANDROID_SRC/dalvik/libcore/regex/src/main/java/java:$ANDROID_SRC/dalvik/libcore/nio/src/main/java:$ANDROID_SRC/dalvik/libcore/nio/src/main/java/java:$ANDROID_SRC/dalvik/libcore/json/src/main/java:$ANDROID_SRC/dalvik/libcore/crypto/src/main/java:$ANDROID_SRC/dalvik/libcore/icu/src/main/java:$ANDROID_SRC/dalvik/libcore/annotation/src/main/java:$ANDROID_SRC/dalvik/libcore/annotation/src/main/java/java:$ANDROID_SRC/dalvik/libcore/junit/src/main/java:$ANDROID_SRC/dalvik/libcore/logging/src/main/java:$ANDROID_SRC/dalvik/libcore/logging/src/main/java/java:$ANDROID_SRC/dalvik/libcore-disabled/instrument/src/main/java:$ANDROID_SRC/dalvik/libcore-disabled/instrument/src/main/java/java:$ANDROID_SRC/dalvik/libcore-disabled/sound/src/main/java
adb jdwp
jdbclient packets/app/Browser/src/ :9000 browser 第一個參數是你要load進來的代碼的地址，如果你要load多個代碼（調試的時候可以看)，可以 export DEBUG_SRC_PATH= 然後jdbclient $DEBUG_SRC_PATH :9000 browser
第二個參數是attach端口，如果9000有在用，可以用其他端口
第三個參數是要調試的應用，腳本裡面根據
pid browser來取得進程id，所以你要保證
adb shell ps |grep browser
能夠看到對應的進程
Set uncaught java.lang.Throwable
Set deferred uncaught java.lang.Throwable
Initializing jdb ...
Group system:
(java.lang.Thread)0xc14050d0c0 <6> Compiler cond. waiting
(java.lang.Thread)0xc14050cf50 <4> Signal Catcher cond. waiting
(java.lang.Thread)0xc14050cea8 <3> GC cond. waiting
(java.lang.Thread)0xc14050cdf0 <2> HeapWorker cond. waiting
Group main:
(java.lang.Thread)0xc14001f1a8 <1> main running
(java.lang.Thread)0xc140562ad8 <21> AsyncTask #5 cond. waiting
(android.os.HandlerThread)0xc1405528f8 <20> WebViewWorkerThread runnin
- 選擇感興趣的線程大部分應用跑在main線程裡面，browser也不例外命令 thread 線程ID
thread 0xc14001f1a8
<1> main[1]
<1> main[1] suspend 0xc14001f1a8
stop at <類>:<行號> 或
stop in <類>.<方法名>[(參數類型,...)]
<1> main[1] stop at com.android.browser.BrowserActivity:2689
Set breakpoint com.android.browser.BrowserActivity:2689
這個地方要寫類名稍微麻煩一點，哪位大蝦可以轉化成像gdb那樣，直接文件名？
命令 c(ont)
<1> main[1] c
>
- 10)點擊網頁中的某一個鏈接
就會看到程序在BrowserActivty:2689(shouldOverideUrlLoading)處斷住了
此時可以看堆棧
命令:bt/wherei
<1> main[1]bt
[1] com.android.browser.BrowserActivity.shouldOverrideUrlLoading (BrowserActivity.java:2,689), pc = 8
[2] com.android.browser.Tab$2.shouldOverrideUrlLoading (Tab.java:552), pc = 44
[3] android.webkit.CallbackProxy.uiOverrideUrlLoading (CallbackProxy.java:216), pc = 19
[4] android.webkit.CallbackProxy.handleMessage (CallbackProxy.java:323), pc = 347
[5] android.os.Handler.dispatchMessage (Handler.java:99), pc = 20
[6] android.os.Looper.loop (Looper.java:123), pc = 75
[7] android.app.ActivityThread.main (ActivityThread.java:3,683), pc = 31
[8] java.lang.reflect.Method.invokeNative (native method)
[9] java.lang.reflect.Method.invoke (Method.java:507), pc = 18
[10] com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:839), pc = 11
[11] com.android.internal.os.ZygoteInit.main (ZygoteInit.java:597), pc = 84
[12] dalvik.system.NativeStart.main (native method)
<1> main[1] l
2,685 }
2,686 }
2,687
2,688 boolean shouldOverrideUrlLoading(WebView view, String url) {
2,689 => if (url.startsWith(SCHEME_WTAI)) {
2,690 // wtai://wp/mc;number
2,691 // number=string(phone-number)
2,692 if (url.startsWith(SCHEME_WTAI_MC)) {
2,693 Intent intent = new Intent(Intent.ACTION_VIEW,
2,694 Uri.parse(WebView.SCHEME_TEL +
<1> main[1] print url
url = "http://m.baidu.com/img?tn=bdidxiphone&ssid=0&from=844b&bd_page_type=1&uid=wiaui_1320452293_7438&pu=sz%401320_480&itj=41"
繼續執行
s(tep) – 執行當前行
step up – 執行到當前方法返回到其調用程序
s(tep)i – 執行當前指令
n(ext) – 跳過一行（跨過調用）
c(ont) – 從斷點處繼續執行
<1> main[1] help
** command list **
connectors -- list available connectors and transports in this VM
run [class [args]] -- start execution of application's main class
threads [threadgroup] -- list threads
thread <thread id> -- set default thread
suspend [thread id(s)] -- suspend threads (default: all)
resume [thread id(s)] -- resume threads (default: all)
where [<thread id> | all] -- dump a thread's stack
wherei [<thread id> | all]-- dump a thread's stack, with pc info
up [n frames] -- move up a thread's stack
down [n frames] -- move down a thread's stack
kill <thread id> <expr> -- kill a thread with the given exception object
interrupt <thread id> -- interrupt a thread
print <expr> -- print value of expression
dump <expr> -- print all object information
eval <expr> -- evaluate expression (same as print)
set <lvalue> = <expr> -- assign new value to field/variable/array element
locals -- print all local variables in current stack frame
classes -- list currently known classes
class <class id> -- show details of named class
methods <class id> -- list a class's methods
fields <class id> -- list a class's fields
threadgroups -- list threadgroups
threadgroup <name> -- set current threadgroup
stop in <class id>.<method>[(argument_type,...)]
-- set a breakpoint in a method
stop at <class id>:<line> -- set a breakpoint at a line
clear <class id>.<method>[(argument_type,...)]
-- clear a breakpoint in a method
clear <class id>:<line> -- clear a breakpoint at a line
clear -- list breakpoints
catch [uncaught|caught|all] <class id>|<class pattern>
-- break when specified exception occurs
ignore [uncaught|caught|all] <class id>|<class pattern>
-- cancel 'catch' for the specified exception
watch [access|all] <class id>.<field name>
-- watch access/modifications to a field
unwatch [access|all] <class id>.<field name>
-- discontinue watching access/modifications to a field
trace [go] methods [thread]
-- trace method entries and exits.
-- All threads are suspended unless 'go' is specified
trace [go] method exit | exits [thread]
-- trace the current method's exit, or all methods' exits
-- All threads are suspended unless 'go' is specified
untrace [methods] -- stop tracing method entrys and/or exits
step -- execute current line
step up -- execute until the current method returns to its caller
stepi -- execute current instruction
next -- step one line (step OVER calls)
cont -- continue execution from breakpoint
list [line number|method] -- print source code
use (or sourcepath) [source file path]
-- display or change the source path
exclude [<class pattern>, ... | "none"]
-- do not report step or method events for specified classes
classpath -- print classpath info from target VM
monitor <command> -- execute command each time the program stops
monitor -- list monitors
unmonitor <monitor#> -- delete a monitor
read <filename> -- read and execute a command file
lock <expr> -- print lock info for an object
threadlocks [thread id] -- print lock info for a thread
pop -- pop the stack through and including the current frame
reenter -- same as pop, but current frame is reentered
redefine <class id> <class file name>
-- redefine the code for a class
disablegc <expr> -- prevent garbage collection of an object
enablegc <expr> -- permit garbage collection of an object
!! -- repeat last command
<n> <command> -- repeat command n times
# <command> -- discard (no-op)
help (or ?) -- list commands
version -- print version information
exit (or quit) -- exit debugger
<class id>: a full class name with package qualifiers
<class pattern>: a class name with a leading or trailing wildcard ('*')
<thread id>: thread number as reported in the 'threads' command
<expr>: a Java(tm) Programming Language expression.
Most common syntax is supported.
Startup commands can be placed in either "jdb.ini" or ".jdbrc"
in user.home or user.dir
tom@tom-laptop:~/work/gingerbread$ jdbshell
usage: jdbshell [jdb args]
example: ./jdbshell -sourcepath $ANDROID_SRC_PATH -attach 6107
command alias:
c -- cont
l -- list
n -- next
r -- run
s -- step
si -- stepi
f -- step up
bt -- wherei