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devi@70
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1 #!/bin/sh
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2
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devi@105
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3 # (c) Igor Chubin, igor@chub.in, 2004-2006
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4
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devi@76
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5 # Environment variables set by the script:
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6 #
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7 # L3_SESSION_ID - uniq id of the LiLaLo-session
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8 # L3_PARENT_TTY - name of tty on which script is running
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9 # PS1 - intercative shell prompt in which LiLaLo hides
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10 # various information about the command
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11 # L3_TAMPERED_EDITORS - list of editors which are tampered with functions
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12
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13
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14 # Functions with the names starting _l3_ are internal.
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15 # Such functions are unset before this rc script exits
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16
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17 _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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18
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19 _l3_start()
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20 {
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21 echo $- | grep -q i || return 0
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22 if _l3_is_running_here
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23 then
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24 _l3_env
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25 _l3_init_prompt
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26 l3_fix_prompt
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27 _l3_tamper_editors
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28 _l3_tamper_commands
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29 _l3_unset_internal
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30 else
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31 _l3_start_session
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32 _l3_run_script
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33 fi
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34 }
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35
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36 # ===================== STAGE 1 ============================
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37
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38 _l3_is_running_here()
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39 {
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40 ps waux | awk '{print $2" "$11 }' | grep -q ^$PPID" "script
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41 return $?
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42
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43 # Check if ^^^^ run on Linux
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44 # and del vvvv this if it does
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45
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46 export L3_TTY=`/usr/bin/tty`
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47 uname -a | grep -qi bsd && bsd=yes
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48 proc_on_the_term=`w | grep "${L3_TTY##/dev/}" | awk '{print $8;}'`
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49 # freeBSD:
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50 [ -n "$bsd" ] && \
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51 proc_on_the_term=`w | grep "${L3_TTY##/dev/tty}" | awk '{print $6;}'`
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52
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53 [ -n "$proc_on_the_term" ] && echo $proc_on_the_term | grep -q script
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54 }
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55
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56 _l3_start_session()
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57 {
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58 export L3_SESSION_ID=${RANDOM}${RANDOM}${RANDOM}${RANDOM}-`date +%s`
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59 export L3_HOME=~/.lilalo/
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60 mkdir -p $L3_HOME
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61
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62 tty=`/usr/bin/tty`
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63 uname -a | grep -qi bsd && bsd=yes
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64 parent=`cat /proc/$PPID/cmdline 2> /dev/null`
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65 [ -z "$parent" ] && parent="`ps waux | awk '{if ($2 == '$PPID') print $11; }'`"
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66 system=`uname -rs`
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67 login_from=`who | grep "${tty##/dev/}" | awk '{print $6;}' | tr -d '()'`
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68 #[ -n "$bsd" ] && login_from="" #FIXME!
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69 start_time=`date +%s`
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70 hostname=`hostname -f 2> /dev/null`
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71 [ -n "$bsd" ] && hostname=`hostname`
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72
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73 cat <<INFO > $L3_HOME/$L3_SESSION_ID.info
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74 <session>
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75 <local_session_id>$L3_SESSION_ID</local_session_id>
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76 <hostname>$hostname</hostname>
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77 <user>$USER</user>
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78 <uid>$UID</uid>
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79 <login_from>$login_from</login_from>
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80 <tty>$tty</tty>
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81 <system>$system</system>
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82 <parent>$parent</parent>
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83 <ppid>$PPID</ppid>
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84 <pid>$$</pid>
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85 <start_time>$start_time</start_time>
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86 <lang>$LANG</lang>
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87 </session>
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88 INFO
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89
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90 unset parent system login_from start_time hostname tty
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91 }
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92
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93 _l3_run_script()
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94 {
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95 uname -a | grep -qi bsd && bsd=yes
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96 flush="-f" #linux
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97 [ -n "$bsd" ] && flush="-t 0" #freebsd
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98 export L3_PARENT_TTY=`/usr/bin/tty`
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99 exec script $flush -q $L3_HOME/${L3_SESSION_ID}.script
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100 }
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101
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102 # ===================== STAGE 2 ============================
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103
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104 _l3_env()
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105 {
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106 trap l3_close_session 2
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107 trap l3_close_session EXIT
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108 true
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109 }
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110
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111 l3_close_session()
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112 {
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113 (
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114 echo '<history>'
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115 history | sed 's/&/\&/; s/</\</g; s/>/\>/g'
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116 echo '</history>'
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117 ) >> $L3_HOME/$L3_SESSION_ID.info
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118 }
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119
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120 _l3_init_prompt()
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121 {
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122 PS1='[\u@\h:\W]\$ '
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123 [ $UID = 0 ] \
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124 && PS1='\[\033[0;31m\]'$PS1'\[\033[0m\]' \
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125 || PS1='\[\033[0;32m\]'$PS1'\[\033[0m\]' \
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126 export PS1
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127 }
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128
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129 l3_fix_prompt()
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130 {
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131 export PS1='\[v2#\!#$?#$UID#$$#$(/bin/date +%s)$(l3_save_last_line)#$PWD#\033[1024D\033[K\]'$PS1
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132 }
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133
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134 _l3_tamper_editors()
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135 {
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136 for editor_file in $_l3_editors_to_tamper
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137 do
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138 [ -x $editor_file ] || continue
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139 editor_name=${editor_file##*/}
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140 eval "
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141 $editor_name() {
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142 if [ -d \"\$1\" ]
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143 then
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144 $editor_file \"\$1\"
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145 return \$?
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146 else
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147 TIME=\"\`date +%s\`\"
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148 DIR=\"\"
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149 [ \"\${1#/}\" = \"\$1\" ] && DIR=\"\$PWD/\"
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150 DIFFNAME=\"\${L3_SESSION_ID}_\${TIME}\`echo \$DIR\$1| sed s@_@__@ | sed 's@/@_@g'\`.diff\"
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151 old_file=\"/tmp/l3-saved-\$\$.\$RANDOM.\$RANDOM\"
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152 /bin/cp -- \"\$1\" \"\$old_file\" 2> /dev/null
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153 $editor_file \"\$@\" || ERR=\$?
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154 [ -e \"\$old_file\" ] && diff \"\$old_file\" \"\$1\" > \"\$L3_HOME/\$DIFFNAME\" 2> /dev/null
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155 if [ "$?" == 2 ]
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156 then
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157 diff /dev/null \"\$1\" > \"\$L3_HOME/\$DIFFNAME\" 2> /dev/null
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158 fi
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159 /bin/rm \"\$old_file\" 2> /dev/null
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160 return \$ERR
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161 fi
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162 }
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163 "
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164 L3_TAMPERED_EDITORS="$L3_TAMPERED_EDITORS $editor_name"
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165 done
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166 [ -n "$L3_TAMPERED_EDITORS" ] && export L3_TAMPERED_EDITORS
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167 }
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168
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169 _l3_tamper_commands()
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170 {
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171 tty()
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172 {
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173 [ -n "$L3_PARENT_TTY" ] && echo $L3_PARENT_TTY || /usr/bin/tty
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174 }
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175 }
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176
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177 _l3_unset_internal()
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178 {
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179 unset `set | grep '^_l3_.*()' | sed 's/()//'`
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180 unset `set | grep '^_l3_.*=' | sed 's/=.*//'`
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181 }
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182
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183
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184 l3shot()
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185 {
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186 if [ -x "`which xwd`" ]
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187 then
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188 _l3_home=${L3_HOME:-~/.lilalo}
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189 shot_name="${L3_SESSION_ID}_`date +%s`".xwd
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190 echo -n Choose window to be shoot ... >&2
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191 [ -d ${_l3_home} ] || mkdir -p ${_l3_home}
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192 xwd -out "$_l3_home/$shot_name" \
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193 && echo Ok\
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194 && echo Shot was successful. \
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195 && echo Screenshot is written to ${_l3_home}/${shot_name} \
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196 && echo Screenshot will appears in the lablog.
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197 else
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198 {
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199 echo
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200 echo "Can't make screenshot :("
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201 echo
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202 echo I must use program xwd to make screenshot,
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203 echo but it seems not to be installed
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204 echo Try to find the program in the \"xbase-clients\" package
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205 echo
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206 } >&2
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207 fi
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208 }
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209
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210 # Append lines from "$@" files to the end of the shell history
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211 hist_append ()
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212 {
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213 eval $(cat "$@" | sed 's/"/\\\\"/g' | while read line; do echo history -s \"$line\"\;; done);
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214 }
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215
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216 l3_save_last_line ()
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217 {
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218 (
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219 echo '<cline>'
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220 history 1 | sed 's/&/&/; s/</\</g; s/>/\>/g'
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221 echo '</cline>'
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222 ) >> $L3_HOME/$L3_SESSION_ID.info
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223 }
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224
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225 l3 ()
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226 {
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227 case "$1" in
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228 on)
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229 echo switching on
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230 ;;
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231 off)
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232 echo switcing off
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233 ;;
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234 cd)
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235 echo l3cd="$2" > ~/.l3rc
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236 ;;
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237 pwd)
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238 grep ^l3cd= ~/.l3rc | sed s/[^=]*=//
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239 ;;
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240 *)
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241 echo /usr/local/bin/l3
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242 ;;
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243 esac
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244 }
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245
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