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devi@70
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1 #!/bin/sh
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2
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3
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4 # Environment variables set by the script:
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5 #
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6 # L3_SESSION_ID - uniq id of the LiLaLo-session
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7 # L3_PARENT_TTY - name of tty on which script is running
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8 # PS1 - intercative shell prompt in which LiLaLo hides
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9 # various information about the command
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10 # L3_TAMPERED_EDITORS - list of editors which are tampered with functions
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11
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12
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13 # Functions with the names starting _l3_ are internal.
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14 # Such functions are unset before this rc script exits
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15
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16 _l3_editors_to_tamper='/bin/vi /usr/bin/vi /usr/bin/vim /bin/ee /usr/bin/ee /usr/bin/pico /usr/bin/nano /usr/local/bin/vim'
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17
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18 _l3_start()
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19 {
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20 echo $- | grep -q i || return 0
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21 if _l3_is_running_here
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22 then
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23 _l3_env
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24 _l3_init_prompt
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25 l3_fix_prompt
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26 _l3_tamper_editors
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27 _l3_tamper_commands
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28 _l3_unset_internal
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29 else
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30 _l3_start_session
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31 _l3_run_script
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32 fi
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33 }
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34
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35 # ===================== STAGE 1 ============================
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36
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37 _l3_is_running_here()
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38 {
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39 ps waux | awk '{print $2" "$11 }' | grep -q ^$PPID" "script
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40 return $?
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41
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42 # Check if ^^^^ run on Linux
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43 # and del vvvv this if it does
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44
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45 export L3_TTY=`/usr/bin/tty`
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46 uname -a | grep -qi bsd && bsd=yes
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47 proc_on_the_term=`w | grep "${L3_TTY##/dev/}" | awk '{print $8;}'`
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48 # freeBSD:
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49 [ -n "$bsd" ] && \
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50 proc_on_the_term=`w | grep "${L3_TTY##/dev/tty}" | awk '{print $6;}'`
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51
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52 [ -n "$proc_on_the_term" ] && echo $proc_on_the_term | grep -q script
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53 }
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54
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55 _l3_start_session()
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56 {
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57 export L3_SESSION_ID=${RANDOM}${RANDOM}${RANDOM}${RANDOM}-`date +%s`
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58 export L3_HOME=~/.lilalo/
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59 mkdir -p $L3_HOME
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60
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61 tty=`/usr/bin/tty`
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62 uname -a | grep -qi bsd && bsd=yes
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63 parent=`cat /proc/$PPID/cmdline 2> /dev/null`
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64 [ -z "$parent" ] && parent="`ps waux | awk '{if ($2 == '$PPID') print $11; }'`"
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65 system=`uname -rs`
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66 login_from=`who | grep "${tty##/dev/}" | awk '{print $6;}' | tr -d '()'`
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67 #[ -n "$bsd" ] && login_from="" #FIXME!
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68 start_time=`date +%s`
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69 hostname=`hostname -f 2> /dev/null`
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70 [ -n "$bsd" ] && hostname=`hostname`
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71
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72 cat <<INFO > $L3_HOME/$L3_SESSION_ID.info
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73 <session>
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74 <local_session_id>$L3_SESSION_ID</local_session_id>
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75 <hostname>$hostname</hostname>
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76 <user>$USER</user>
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77 <uid>$UID</uid>
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78 <login_from>$login_from</login_from>
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79 <tty>$tty</tty>
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80 <system>$system</system>
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81 <parent>$parent</parent>
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82 <ppid>$PPID</ppid>
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83 <pid>$$</pid>
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84 <start_time>$start_time</start_time>
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85 <lang>$LANG</lang>
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86 </session>
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87 INFO
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88
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89 unset parent system login_from start_time hostname tty
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90 }
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91
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92 _l3_run_script()
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93 {
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94 uname -a | grep -qi bsd && bsd=yes
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95 flush="-f" #linux
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96 [ -n "$bsd" ] && flush="-t 0" #freebsd
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97 export L3_PARENT_TTY=`/usr/bin/tty`
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98 exec script $flush -q $L3_HOME/${L3_SESSION_ID}.script
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99 }
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100
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101 # ===================== STAGE 2 ============================
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102
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103 _l3_env()
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104 {
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105 trap l3_close_session 2
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106 trap l3_close_session EXIT
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107 true
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108 }
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109
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110 l3_close_session()
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111 {
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112 (
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113 echo '<history>'
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114 history | sed 's/&/\&/; s/</\</g; s/>/\>/g'
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115 echo '</history>'
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116 ) >> $L3_HOME/$L3_SESSION_ID.info
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117 }
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118
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119 _l3_init_prompt()
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120 {
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121 PS1='[\u@\h:\W]\$ '
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122 [ $UID = 0 ] \
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123 && PS1='\[\033[0;31m\]'$PS1'\[\033[0m\]' \
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124 || PS1='\[\033[0;32m\]'$PS1'\[\033[0m\]' \
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125 export PS1
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126 }
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127
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128 l3_fix_prompt()
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129 {
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130 export PS1='\[v2#\!#$?#$UID#$$#$(/bin/date +%s)#$PWD#\033[1024D\033[K\]'$PS1
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131 }
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132
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133 _l3_tamper_editors()
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134 {
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135 for editor_file in $_l3_editors_to_tamper
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136 do
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137 [ -x $editor_file ] || continue
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138 editor_name=${editor_file##*/}
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139 eval "
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140 $editor_name() {
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141 if [ -d \"\$1\" ]
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142 then
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143 $editor_file \"\$1\"
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144 return \$?
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145 else
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146 TIME=\"\`date +%s\`\"
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147 DIR=\"\"
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148 [ \"\${1#/}\" = \"\$1\" ] && DIR=\"\$PWD/\"
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149 DIFFNAME=\"\${L3_SESSION_ID}_\${TIME}\`echo \$DIR\$1| sed s@_@__@ | sed 's@/@_@g'\`.diff\"
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150 old_file=\"/tmp/l3-saved-\$\$.\$RANDOM.\$RANDOM\"
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151 /bin/cp -- \"\$1\" \"\$old_file\" 2> /dev/null
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152 $editor_file \"\$@\" || ERR=\$?
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153 [ -e \"\$old_file\" ] && diff \"\$old_file\" \"\$1\" > \"\$L3_HOME/\$DIFFNAME\" 2> /dev/null
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154 if [ "$?" == 2 ]
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155 then
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156 diff /dev/null \"\$1\" > \"\$L3_HOME/\$DIFFNAME\" 2> /dev/null
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157 fi
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158 /bin/rm \"\$old_file\" 2> /dev/null
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159 return \$ERR
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160 fi
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161 }
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162 "
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163 L3_TAMPERED_EDITORS="$L3_TAMPERED_EDITORS $editor_name"
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164 done
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165 [ -n "$L3_TAMPERED_EDITORS" ] && export L3_TAMPERED_EDITORS
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166 }
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167
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168 _l3_tamper_commands()
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169 {
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170 tty()
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171 {
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172 [ -n "$L3_PARENT_TTY" ] && echo $L3_PARENT_TTY || /usr/bin/tty
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173 }
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174 }
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175
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176 _l3_unset_internal()
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177 {
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178 unset `set | grep '^_l3_.*()' | sed 's/()//'`
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179 unset `set | grep '^_l3_.*=' | sed 's/=.*//'`
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180 }
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181
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182
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183 l3shot()
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184 {
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185 if [ -x "`which xwd`" ]
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186 then
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187 _l3_home=${L3_HOME:-~/.lilalo}
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188 shot_name="${L3_SESSION_ID}_`date +%s`".xwd
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189 echo -n Choose window to be shoot ... >&2
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190 [ -d ${_l3_home} ] || mkdir -p ${_l3_home}
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191 xwd -out "$_l3_home/$shot_name" \
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192 && echo Ok\
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193 && echo Shot was successful. \
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194 && echo Screenshot is written to ${_l3_home}/${shot_name} \
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195 && echo Screenshot will appears in the lablog.
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196 else
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197 {
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198 echo
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199 echo "Can't make screenshot :("
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200 echo
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201 echo I must use program xwd to make screenshot,
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202 echo but it seems not to be installed
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203 echo Try to find the program in the \"xbase-clients\" package
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204 echo
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205 } >&2
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206 fi
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207 }
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