Finding files in java archives by their content

While doing a bug hunting i needed to find a file containing a certain string and did not know where to look for it. At one stage of "file hunting" i needed to be able to search for the file in jars (Java Archives). Thus in searching for it i came up with a shell script using my good old friend venkys help

#!/bin/sh
2 echo Params: "$#" - \("$1"\) \("$2"\) \("$3"\) \("$4"\)
3 if test "$#" -ne 4
4 then
5 echo "Command takes exactly 4 params - Jar_name_pattern search_location file_name_pattern search_string
6 Use - for Jar_name_pattern to search for within all jars.
7 Use - for search_file_name to find with file_name_pattern only and avoid content search"
8 exit 1
9 fi
10
11 if test "$1" = "-"
12 then
13 jar_param="*.jar"
14 else
15 jar_param="$1"
16 fi
17 if test "$4" = "-"
18 then
19 search_content=1
20 else
21 search_content=0
22 fi
23 echo Executing: find "$2" -name "$jar_param"
24 file_list=`find "$2" -name "$jar_param"`
25 current_dir=`pwd`
26 cd /tmp/
27 mkdir search_file rw_not=1
28 if test -n "$rw_not"
29 then
30 echo "/tmp/ is not writeable by current user thus can search file content and exiting"
31 exit 1
32 fi
33 cd search_file
34 echo "Search Result:"
35 for jar_file in $file_list
36 do
37 inner_file_list=`jar tf "$jar_file" grep "$3"`
38 if test "$search_content" = "0"
39 then
40 if test -n "$inner_file_list"
41 then
42 jar xf "$jar_file" $inner_file_list
43 for inner_file in $inner_file_list
44 do
45 has_content=`cat $inner_file grep "$4"`
46 if test -n "$has_content"
47 then
48 echo Found in "$inner_file" @ "$jar_file"
49 fi
50 done
51 rm -rf *
52 fi
53 else
54 test -n "$inner_file_list" && echo "$jar_file"
55 fi
56 done
57 cd ..
58 rm -rf ./search_file
59 cd "$current_dir"

using this script not only can we find jars containing certain filename but also search file content to get results. Lets take three use cases - "I want to find jars that contain .properties file", "I want to find jars containing .properties file containing the word com.smartitengineering" and "I want to find jars, whose name has smart, containing .properties file containing the word com.smartitengineering". Using the script all these use cases can be achieved by using the following commands respectively:

./search-jar.sh - /home/user/ .properties -

./search-jar.sh - /home/user/ .properties com.smartitengineering

./search-jar.sh *smart*.jar /home/user/ .properties com.smartitengineering

The command takes exactly 4 arguments - jar_filename_pattern, search_dir_path, search_file_name and content_to_search. If jar_filename is "-" than it will search within all jars within search_dir_path. If content_to_search is "-" it will not search for content, but rather jars with certain filename.

As the script is in open domain I would appreciate if users would make their own edit and submit or request for features through this post's comments.