shlib.sh

   1 #!/bin/sh
   2 #
   3 # This is generic shell library for all the scripts used by Girocco;
   4 # most importantly, it introduces all the $cfg_* shell variables.
   5
   6 get_girocco_config_var_list() {
   7         # Export all the variables from Girocco::Config to suitable var= lines
   8         # prefixing them with 'cfg_'. E.g. $cfg_admin is admin's mail address now
   9         # and also setting a 'defined_cfg_' prefix to 1 if they are not undef.
  10         __girocco_conf="$GIROCCO_CONF"
  11         [ -n "$__girocco_conf" ] || __girocco_conf="Girocco::Config"
  12         [ -z "$basedir" ] || __girocco_extrainc="-I$basedir"
  13         perl -I@basedir@ $__girocco_extrainc -M$__girocco_conf -le \
  14                 'foreach (sort {uc($a) cmp uc($b)} keys %Girocco::Config::) {
  15                         my $val = ${$Girocco::Config::{$_}}; defined($val) or $val="";
  16                         $val =~ s/([\\"\$\`])/\\$1/gos;
  17                         $val =~ s/(?:\r\n|\r|\n)$//os;
  18                         print "cfg_$_=\"$val\"";
  19                         print "defined_cfg_$_=",
  20                                 (defined(${$Girocco::Config::{$_}})?"1":"");
  21                 }'
  22 }
  23
  24 # If basedir has been replaced, and shlib_vars.sh exists, get the config
  25 # definitions from it rather than running Perl.
  26 if [ "@basedir@" = '@'basedir'@' ] || ! [ -r "@basedir@/shlib_vars.sh" ]; then
  27         # Import all the variables from Girocco::Config to the local environment,
  28         eval "$(get_girocco_config_var_list)"
  29 else
  30         # Import the variables from shlib_vars.sh which avoids needlessly
  31         # running another copy of Perl
  32         . "@basedir@/shlib_vars.sh"
  33 fi
  34
  35 git() (
  36         # some poorly behaving /bin/sh implementations do not
  37         # properly export variables when the command is actually
  38         # a shell function -- they are set for the function call
  39         # but not exported into the environment for anything the
  40         # function executes.  Export the two Git variables we
  41         # care about if they are set.  Since this is a subshell
  42         # the export will be temporary.
  43         [ -z "$GIT_DIR" ] || export GIT_DIR
  44         [ -z "$GIT_SSL_NO_VERIFY" ] || export GIT_SSL_NO_VERIFY
  45         exec "$cfg_git_bin" "$@"
  46 )
  47
  48 nc_openbsd() { "$cfg_nc_openbsd_bin" "$@"; }
  49
  50 _addrlist() {
  51         _list=
  52         for _addr in "$@"; do
  53                 [ -z "$_list" ] || _list="$_list, "
  54                 _list="$_list$_addr"
  55         done
  56         echo "$_list"
  57 }
  58
  59 _sendmail() {
  60         _mailer="${cfg_sendmail_bin:-/usr/sbin/sendmail}"
  61         if [ -n "$cfg_sender" ]; then
  62                 "$_mailer" -i -f "$cfg_sender" "$@"
  63         else
  64                 "$_mailer" -i "$@"
  65         fi
  66 }
  67
  68 mail() {
  69         _subject=
  70         if [ "$1" = "-s" ]; then
  71                 shift
  72                 _subject="$1"
  73                 shift
  74         fi
  75         {
  76                 echo "From: \"$cfg_name\" ($cfg_title) <$cfg_admin>"
  77                 echo "To: $(_addrlist "$@")"
  78                 [ -z "$_subject" ] || echo "Subject: $_subject"
  79                 echo "MIME-Version: 1.0"
  80                 echo "Content-Type: text/plain; charset=utf-8"
  81                 echo "Content-Transfer-Encoding: 8bit"
  82                 echo "Auto-Submitted: auto-generated"
  83                 echo ""
  84                 cat
  85         } | _sendmail "$@"
  86 }
  87
  88 # bang CMD... will execute the command with well-defined failure mode;
  89 # set bang_action to string of the failed action ('clone', 'update', ...);
  90 # pre-set bang_once=1 to make sure jobs banging on a repo repeatedly will
  91 # not spam the owner; re-define the bang_trap() function to do custom
  92 # cleanup before bailing out
  93 bang() {
  94         if [ -n "$show_progress" ]; then
  95                 exec 3>&1
  96                 errcode=
  97                 read -r errcode <<-EOT || :
  98                 $(
  99                         exec 4>&3 3>&1 1>&4 4>&-
 100                         { "$@" 3>&- || echo $? >&3; } 2>&1 | tee -a "$bang_log"
 101                 )
 102                 EOT
 103                 exec 3>&-
 104                 if [ -z "$errcode" ]; then
 105                         # All right. Cool.
 106                         return;
 107                 fi
 108         else
 109                 if "$@" >>"$bang_log" 2>&1; then
 110                         # All right. Cool.
 111                         return;
 112                 else
 113                         errcode="$?"
 114                 fi
 115         fi
 116         if ! [ -e .banged ] || [ -e .bangagain ]; then
 117                 rm -f .bangagain
 118                 bangmailok=true
 119                 ! [ -f HEAD -a -f config -a -d objects ] ||
 120                 bangmailok="$(GIT_DIR=. git config --bool gitweb.statusupdates 2>/dev/null || echo true)"
 121                 bangaddrs=''
 122                 [ "$bangmailok" = "false" -o -z "$mail" ] || bangaddrs="$mail"
 123                 [ -z "$cfg_admincc" -o "$cfg_admincc" = "0" -o -z "$cfg_admin" ] ||
 124                 if [ -z "$bangaddrs" ]; then bangaddrs="$cfg_admin"; else bangaddrs="$bangaddrs,$cfg_admin"; fi
 125                 [ -z "$bangaddrs" ] ||
 126                 {
 127                         echo "$* failed with error code $errcode"
 128                         echo ""
 129                         [ ! -n "$bang_once" ] || echo "you will not receive any more notifications until recovery"
 130                         echo "this status message may be disabled on the project admin page"
 131                         echo ""
 132                         echo "Log follows:"
 133                         echo ""
 134                         cat "$bang_log"
 135                 } | mail -s "[$cfg_name] $proj $bang_action failed" "$bangaddrs"
 136         fi
 137         touch .banged
 138         bang_trap
 139         exit 1
 140 }
 141
 142 # bang_eval CMD... will evaluate the command with well-defined failure mode;
 143 # Identical to bang CMD... except the command is eval'd instead of executed.
 144 bang_eval() {
 145         bang eval "$*"
 146 }
 147
 148 # Default bang settings:
 149 bang_setup() {
 150         bang_action="lame_programmer"
 151         bang_once=
 152         bang_trap() { :; }
 153         bang_log="$(mktemp -t repomgr-XXXXXX)"
 154         trap "rm \"\$bang_log\"" EXIT
 155 }
 156
 157
 158 # Progress report - if show_progress is set, shows the given message.
 159 progress() {
 160         [ ! -n "$show_progress" ] || echo "$@"
 161 }
 162
 163
 164 # Project config accessors; must be run in project directory
 165 config_get() {
 166         git config "gitweb.$1"
 167 }
 168
 169 config_set() {
 170         git config "gitweb.$1" "$2" && chgrp repo config && chmod g+w config
 171 }
 172
 173 config_set_raw() {
 174         git config "$1" "$2"        && chgrp repo config && chmod g+w config
 175 }
 176
 177 config_get_date_seconds() {
 178         _dt="$(config_get "$1" || :)"
 179         [ -n "$_dt" ] || return 1
 180         _ds="$(perl -I@basedir@ -MGirocco::Util -e "print parse_rfc2822_date('$_dt')")"
 181         [ -n "$_ds" ] || return 1
 182         echo "$_ds"
 183 }
 184
 185 # Tool for checking whether given number of seconds has not passed yet
 186 check_interval() {
 187         os="$(config_get_date_seconds "$1")" || return 1
 188         ns="$(date +%s)"
 189         [ $ns -lt $(($os+$2)) ]
 190 }
 191
 192
 193 # List all Git repositories, with given prefix if specified, one-per-line
 194 get_repo_list() {
 195         if [ -n "$1" ]; then
 196                 cut -d : -f 1,3 "$cfg_chroot"/etc/group | grep "^$1"
 197         else
 198                 cut -d : -f 1,3 "$cfg_chroot"/etc/group
 199         fi | while IFS=: read name id; do
 200                 [ $id -lt 65536 ] || echo "$name"
 201         done
 202 }
 203
 204 # returns true if the passed in git dir (defaults to ".") is a mirror using git fast-import
 205 is_gfi_mirror() {
 206         _gitdir="${1-.}"
 207         # always return false for non-mirrors
 208         [ ! -e "$_gitdir/.nofetch" ] || return 1
 209         _url="$(GIT_DIR="$_gitdir" config_get baseurl 2>/dev/null || :)"
 210         case "$_url" in
 211                 svn://* | svn+http://* | svn+https://*)
 212                         # Don't think git-svn currently uses git fast-import
 213                         return 1
 214                         ;;
 215                 darcs://*)
 216                         # darcs mirrors use git fast-import
 217                         return 0
 218                         ;;
 219                 bzr://*)
 220                         # bzr mirrors use git fast-import
 221                         return 0
 222                         ;;
 223                 hg+http://* | hg+https://*)
 224                         # hg mirrors use git fast-import
 225                         return 0
 226                         ;;
 227         esac
 228         # assume it does not use git fast-import
 229         return 1
 230 }
 231
 232 # hg-fast-export | git fast-import with error handling in current directory GIT_DIR
 233 git_hg_fetch() {
 234         _python="${PYTHON:-python}"
 235         _err1=
 236         _err2=
 237         exec 3>&1
 238         { read -r _err1 || :; read -r _err2 || :; } <<-EOT
 239         $(
 240                 exec 4>&3 3>&1 1>&4 4>&-
 241                 {
 242                         _e1=0
 243                         [ -f hg2git-marks ] || touch hg2git-marks
 244                         _af="$(git config hg.authorsfile || :)"
 245                         _cmd='GIT_DIR="$(pwd)" "$_python" "$cfg_basedir/bin/hg-fast-export.py" \
 246                                 --repo    "$(pwd)/repo.hg" \
 247                                 --marks   "$(pwd)/hg2git-marks" \
 248                                 --mapping "$(pwd)/hg2git-mapping" \
 249                                 --heads   "$(pwd)/hg2git-heads" \
 250                                 --status  "$(pwd)/hg2git-state" \
 251                                 -U unknown --force --flatten --hg-hash'
 252                         [ -z "$_af" ] || _cmd="$_cmd"' --authors "$_af"'
 253                         eval "$_cmd" 3>&- || _e1=$?
 254                         echo $_e1 >&3
 255                 } | \
 256                 {
 257                         _e2=0
 258                         rm -f hg2git-marks.new
 259                         git fast-import \
 260                                 --export-marks="$(pwd)/hg2git-marks.new" \
 261                                 --export-pack-edges="$(pwd)/gfi-packs" \
 262                                 --force 3>&- || _e2=$?
 263                         echo $_e2 >&3
 264                 }
 265         )
 266         EOT
 267         exec 3>&-
 268         [ "$_err1" = 0 -a "$_err2" = 0 ] || return 1
 269         if [ -f hg2git-marks ]; then
 270                 rm -f hg2git-marks.old
 271                 mv hg2git-marks hg2git-marks.old
 272         else
 273                 touch hg2git-marks.old
 274         fi
 275         cat hg2git-marks.old hg2git-marks.new | LC_ALL=C uniq > hg2git-marks
 276         rm hg2git-marks.old hg2git-marks.new
 277         rm -f hg2git-heads
 278         git branch --no-color | \
 279         while IFS= read -r _head; do
 280                 echo ":${_head#??} $(git rev-parse "refs/heads/${_head#??}")"
 281         done > hg2git-heads
 282 }