]> sourceware.org Git - systemtap.git/commitdiff
Package command line arguments in separate files.
authorDave Brolley <brolley@redhat.com>
Fri, 15 Jan 2010 15:52:11 +0000 (10:52 -0500)
committerDave Brolley <brolley@redhat.com>
Fri, 15 Jan 2010 15:52:11 +0000 (10:52 -0500)
stap-client

index 869bff42697154693af7341ad58a2d67d85de728..4cb44b189b836ae9cc1676e3a4ba78004080066a 100755 (executable)
@@ -81,18 +81,19 @@ function initialization {
 # output.
 #
 function parse_options {
-    cmdline=
-    cmdline1=
-    cmdline2=
+    # Each command line argument will be written to its own file within the
+    # request package.
+    argc=1
+    arg_subst=
 
     while test $# != 0
     do
-       advance_p=0
+       advance=0
        dash_seen=0
 
         # Start of a new token.
-       first_token=$1
-       until test $advance_p != 0
+       first_token="$1"
+       until test $advance != 0
        do
             # Identify the next option
            first_char=`expr "$first_token" : '\(.\).*'`
@@ -108,18 +109,16 @@ function parse_options {
                            test "X$long_option" != "X" || long_option=`expr "$first_token" : '--\(.*\)'`
                            case $long_option in
                                ssl)
-                                   process_ssl $first_token
+                                   process_ssl "$first_token"
                                    ;;
                                server)
-                                   process_server $first_token
+                                   process_server "$first_token"
                                    ;;
                                *)
-                                   # An unknown or unimportant option.
-                                   # Ignore it, but pass it on to the server.
-                                   cmdline2="$cmdline2 $first_token"
+                                   # An unknown or unimportant option. Ignore it.
                                    ;;
                            esac
-                           advance_p=$(($advance_p + 1))
+                           advance=$(($advance + 1))
                            break
                        fi
                        # It's not a lone dash, or a long option, so it's a short option string.
@@ -136,14 +135,9 @@ function parse_options {
                    # then it could be the name of the script file.
                    if test "X$e_script" = "X" -a "X$script_file" = "X"; then
                        script_file="$first_token"
-                       cmdline1="$cmdline2"
-                       cmdline2=
-                   elif test "$first_char" != "'"; then
-                       cmdline2="$cmdline2 '$first_token'"
-                   else
-                       cmdline2="$cmdline2 $first_token"
+                       script_file_argc=$argc
                    fi
-                   advance_p=$(($advance_p + 1))
+                   advance=$(($advance + 1))
                    break
                fi
            fi
@@ -151,112 +145,122 @@ function parse_options {
             # We are at the start of an option. Look at the first character.
            case $first_char in
                a)
-                   get_arg $first_token $2
-                   process_a $stap_arg
+                   get_arg $first_token "$2"
+                   process_a "$stap_arg"
                    ;;  
                B)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    ;;  
                c)
                    get_arg $first_token "$2"
                    process_c "$stap_arg"
                    ;;
                D)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    ;;
                e)
                    get_arg $first_token "$2"
                    process_e "$stap_arg"
                    ;;
                I)
-                   get_arg $first_token $2
-                   process_I $stap_arg
+                   get_arg $first_token "$2"
+                   process_I "$stap_arg"
                    ;;  
                k)
                    keep_temps=1
                    ;;
                l)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    p_phase=2
                    ;;
                L)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    p_phase=2
                    ;;
                m)
-                   get_arg $first_token $2
-                   process_m $stap_arg
+                   get_arg $first_token "$2"
+                   process_m "$stap_arg"
                    ;;
                o)
-                   get_arg $first_token $2
-                   process_o $stap_arg
+                   get_arg $first_token "$2"
+                   process_o "$stap_arg"
                    ;;
                p)
-                   get_arg $first_token $2
-                   process_p $stap_arg
+                   get_arg $first_token "$2"
+                   process_p "$stap_arg"
                    ;;
                r)
-                   get_arg $first_token $2
-                   process_r $stap_arg
+                   get_arg $first_token "$2"
+                   process_r "$stap_arg"
                    ;;  
                R)
-                   get_arg $first_token $2
-                   process_R $stap_arg
+                   get_arg $first_token "$2"
+                   process_R "$stap_arg"
                    ;;  
                s)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    ;;  
                S)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    ;;  
                v)
                    v_level=$(($v_level + 1))
                    ;;
                x)
-                   get_arg $first_token $2
-                   cmdline2="${cmdline2} -$first_char '$stap_arg'"
+                   get_arg $first_token "$2"
                    ;;
                *)
-                   # An unknown or unimportant flag. Ignore it, but pass it on to the server.
+                   # An unknown or unimportant flag.
                    ;;
            esac
 
-           if test $advance_p = 0; then
+           if test $advance = 0; then
                # Just another flag character. Consume it.
-               cmdline2="$cmdline2 -$first_char"
                first_token=`expr "$first_token" : '.\(.*\)'`
                if test "X$first_token" = "X"; then
-                   advance_p=$(($advance_p + 1))
+                   advance=$(($advance + 1))
                fi
            fi
        done
 
         # Consume the arguments we just processed.
-       while test $advance_p != 0
+       while test $advance != 0
        do
+           # Place the argument is a numbered file within our temp
+           # directory.
+           # o We don't write a newline at the end, since newline could be
+           #   part of the argument.
+           # o We add an X to the beginning of the file
+           #   in order to avoid having 'echo' interpret the output as
+           #   its own option. We then remove the X.
+           #   There must be a better way.
+           echo -n "X$1" > "$tmpdir_client/argv$argc"
+           sed -i "s|^X||" "$tmpdir_client/argv$argc"
+
+           # Does the final argument file contain client-side data
+           # which must be changed to server-side data?
+           if test "X$arg_subst" != "X" -a $advance = 1; then
+               sed -i "s|$stap_arg|$arg_subst|" "$tmpdir_client/argv$argc"
+               arg_subst=
+           fi
+
+           # Get the next argument.
            shift
-           advance_p=$(($advance_p - 1))
+           argc=$(($argc + 1))
+           advance=$(($advance - 1))
        done
     done
 
     # If the script file was given and it's not '-', then replace it with its
-    # client-temp-name in the command string.
+    # client-temp-name in its argument file.
     if test "X$script_file" != "X"; then
        local local_name
        if test "$script_file" != "-"; then
            local_name=`generate_client_temp_name "$script_file"`
        else
-           local_name="$script_file"
+           local_name="-"
        fi
-       cmdline="$cmdline1 'script/$local_name' $cmdline2"
-    else
-       cmdline="$cmdline2"
+       echo "script/$local_name" > "$tmpdir_client/argv$script_file_argc"
     fi
 
     # Processing based on final options settings
@@ -266,12 +270,6 @@ function parse_options {
     # We must have at least one usable certificate database.
     test "X$local_ssl_dbs" != "X " -o "X$public_ssl_dbs" != "X" || \
        fatal "No usable certificate databases found"
-
-    # We can use any server if the phase is less than 4
-    # But don't for now....
-    #if test $p_phase -lt 4; then
-    #  find_all="--all"
-    #fi
 }
 
 # function: get_arg FIRSTWORD SECONDWORD
@@ -284,13 +282,12 @@ function get_arg {
 
     # Advance to the next token, if the first one is exhausted.
     if test "X$first" = "X"; then
-       shift
-       advance_p=$(($advance_p + 1))
-       first=$1
+       advance=$(($advance + 1))
+       first="$2"
     fi
 
     stap_arg="$first"
-    test "X$first" != "X" && advance_p=$(($advance_p + 1))
+    test "X$first" != "X" && advance=$(($advance + 1))
 }
 
 # function: process_ssl ARGUMENT
@@ -302,7 +299,7 @@ function process_ssl {
     test "X$db" != "X" || \
        fatal "Missing argument to --ssl"
 
-    check_db $db || return
+    check_db "$db" || return
 
     additional_local_ssl_dbs="$additional_local_ssl_dbs $db"
 }
@@ -324,8 +321,6 @@ function process_server {
 # Process the -c flag.
 function process_c {
     c_cmd="$1"
-    cmdline2="${cmdline2} -c"
-    test "X$c_cmd" != "X" && cmdline2="${cmdline2} '$c_cmd'"
 }
 
 # function: process_e ARGUMENT
@@ -336,22 +331,16 @@ function process_e {
     # which may have already been identified.
     if test "X$e_script" = "X"; then
        e_script="$1"
-       if test "X$script_file" != "X"; then
-           cmdline2="$cmdline1 '$script_file' $cmdline2"
-           cmdline1=
-           script_file=
-       fi
+       script_file=
     fi
-    cmdline2="${cmdline2} -e '$1'"
 }
 
 # function: process_I ARGUMENT
 #
 # Process the -I flag.
 function process_I {
-    local local_name=`include_file_or_directory tapsets $1`
-    test "X$local_name" != "X" || return
-    cmdline2="${cmdline2} -I 'tapsets/$local_name'"
+    test "X$1" = "X" && return
+    arg_subst=tapsets/`include_file_or_directory tapsets "$1"`
 }
 
 # function: process_m ARGUMENT
@@ -360,7 +349,6 @@ function process_I {
 function process_m {
     module_name="$1"
     m_name="$1"
-    cmdline2="${cmdline2} -m '$1'"
 }
 
 # function: process_o ARGUMENT
@@ -368,15 +356,13 @@ function process_m {
 # Process the -o flag.
 function process_o {
     stdout_redirection="$1"
-    cmdline2="${cmdline2} -o '$1'"
 }
 
 # function: process_p ARGUMENT
 #
 # Process the -p flag.
 function process_p {
-    p_phase=$1
-    cmdline2="${cmdline2} -p '$1'"
+    p_phase="$1"
 }
 
 # function: process_r ARGUMENT
@@ -386,22 +372,22 @@ function process_r {
     local first_char=`expr "$1" : '\(.\).*'`
 
     if test "$first_char" = "/"; then # fully specified path
-        kernel_build_tree=$1
+        kernel_build_tree="$1"
         version_file_name="$kernel_build_tree/include/config/kernel.release"
         # The file include/config/kernel.release within the
         # build tree is used to pull out the version information
-       release=`cat $version_file_name 2>/dev/null`
+       release=`cat "$version_file_name" 2>/dev/null`
        if test "X$release" = "X"; then
            fatal "Missing $version_file_name"
            return
        fi
     else
        # kernel release specified directly
-       release=$1
+       release="$1"
     fi
 
     if test "X$release" != "X$uname_r"; then
-       uname_r=$release
+       uname_r="$release"
        find_all="--all"
     fi
 }
@@ -411,7 +397,7 @@ function process_r {
 # Process the -a flag.
 function process_a {
     if test "X$1" != "X$arch"; then
-       arch=$1
+       arch="$1"
        find_all="--all"
     fi
 }
@@ -420,9 +406,8 @@ function process_a {
 #
 # Process the -R flag.
 function process_R {
-    local local_name=`include_file_or_directory runtime $1`
-    test "X$local_name" != "X" || return
-    cmdline2="${cmdline2} -R 'runtime/$local_name'"
+    test "X$1" = "X" && return
+    arg_subst=runtime/`include_file_or_directory runtime "$1"`
 }
 
 # function: include_file_or_directory PREFIX NAME
@@ -434,7 +419,7 @@ function include_file_or_directory {
     # directory, but only if the file or directory exists.
     local local_name=`generate_client_temp_name "$2"`
     echo "$local_name"
-    test -e /$local_name || return
+    test -e "/$local_name" || return
 
     local local_dirname=`dirname "$local_name"`
     mkdir -p "$tmpdir_client/$1/$local_dirname" || \
@@ -476,7 +461,6 @@ function create_request {
     fi
 
     # Add the necessary info to special files in our temporary directory.
-    echo "cmdline: $cmdline" > cmdline
     echo "sysinfo: `client_sysinfo`" > sysinfo
 }
 
@@ -499,7 +483,8 @@ function package_request {
     zip_client=$tmpdir_env/`mktemp $tmpdir_client_base.zip.XXXXXX` || \
        fatal "Cannot create temporary file " $zip_client
 
-    (rm $zip_client && zip -r $zip_client $tmpdir_client_base > /dev/null) || \
+    cd $tmpdir_client
+    (rm -f $zip_client && zip -r $zip_client * > /dev/null) || \
        fatal "zip of request tree, $tmpdir_client, failed"
 }
 
@@ -649,16 +634,21 @@ function find_and_connect_to_server {
        # Remember which ssl certificate database was used to authenticate the chosen
         # server.
        ssl_db=`${stap_pkglibexecdir}stap-find-servers $find_all | choose_server`
-       test "X$ssl_db" != "X" && return
+       if test "X$ssl_db" != "X"; then
+           rm -f $tmpdir_client/connect
+           return
+       fi
 
        num_servers=`${stap_pkglibexecdir}stap-find-servers $find_all | wc -l`
     fi
 
     if test $num_servers = 0; then
+       rm -f $tmpdir_client/connect
        fatal "Unable to find a server"
     fi
 
     cat $tmpdir_client/connect >&2
+    rm -f $tmpdir_client/connect
     fatal "Unable to connect to a server"
 }
 
@@ -700,8 +690,8 @@ function choose_server {
 # echo the name of the ssl certificate database used to successfully authenticate
 # the server.
 function send_receive {
-    local server=$1
-    local port=$2
+    local server="$1"
+    local port="$2"
 
     # The server must match the dns name on the certificate
     # and must be 'localhost' if the server is on the local host.
@@ -880,9 +870,9 @@ function staprun_PATH {
 #
 # Check the security of the given database directory.
 function check_db {
-    local dir=$1
-    local euid=$2
-    local user=$3
+    local dir="$1"
+    local euid="$2"
+    local user="$3"
     local rc=0
 
     # Check that we have been given a directory
@@ -957,7 +947,7 @@ function check_db {
 #
 # Check the security of the given database file.
 function check_db_file {
-    local file=$1
+    local file="$1"
     local rc=0
 
     # Check that we have been given a file
This page took 0.042811 seconds and 5 git commands to generate.