copr

#!/bin/bash

# assign variables for author, reponame and releaseversion
author="$(echo $2 | cut -d '/' -f1)"
reponame="$(echo $2 | cut -d '/' -f2)"
releasever="$(rpm -E %fedora)"
repofile="/etc/yum.repos.d/_copr_$author-$reponame.repo"
repofilebak="~/COPR/_copr_$author-$reponame.repo"


# the original copr warning message
question=$(cat <<EOF
Enabling a Copr repository. Please note that this repository is not part
of the main distribution, and quality may vary.

The Fedora Project does not exercise any power over the contents of
this repository beyond the rules outlined in the Copr FAQ at
<https://docs.pagure.org/copr.copr/user_documentation.html#what-i-can-build-in-copr>,
and packages are not held to any quality or security level.

Please do not file bug reports about these packages in Fedora
Bugzilla. In case of problems, contact the owner of this repository.

Do you really want to enable copr.fedorainfracloud.org/$author/$reponame? [y/N]:
EOF
)

# the helptext
helptext=$(cat << EOF

====== Experimental COPR Command in non-DNF Fedora Distributions ======

This Tool is not made or supported by the Fedora Project,
but aims to reproduce the "dnf copr" functionalities for easily adding COPRs.

Usage: ./copr [OPTION] [ARGUMENT]


Usage: copr [OPTION] [ARGUMENT]

Options:
  enable    Add COPR repository.
  remove    Remove COPR repository after backing it up.
  list      List all COPR repositories in your repo folder.
  search    Search for a COPR repository by name (in your Browser)
  disable   Keep a repo but disable it
  enable    Make a disabled repo active
  help      Display this help text.

Argument:
  Name of the COPR repository (for search) or "author/repo" (for install and remove)

Examples:
  copr enable kdesig/kde-nightly-qt6
  copr remove kdesig/kde-nightly-qt6
  copr list
  copr search uutils

For help, visit https://discussion.fedoraproject.org.

EOF
)

# Main loop

if [[ "$1" == "enable" ]]; then
    if [[ -f "$repofile" ]]; then
        # If the repo file exists, enable it
        sed -i 's/enabled=0/enabled=1/g' "$repofile" && echo "Repository $author/$reponame enabled" || echo "Already enabled or repo not found."
    else
        # If the repo file does not exist, download it
        while true; do
            read -p "$question" yn
            case $yn in
                [Yy]* ) 
                    echo "$author/$reponame -> $releasever"
                    curl -fsSL "https://copr.fedorainfracloud.org/coprs/$author/$reponame/repo/fedora-$releasever/$author-$reponame-fedora-.repo" | pkexec tee "$repofile" && break
                    ;;
                * ) 
                    echo "Unknown option, exiting." && break
                    ;;
            esac
        done
    fi
fi

# remove the named repo
elif [[ "$1" == "remove" ]]; then
  # backup the repofile and change owner to user
  mkdir ~/COPR

  if [[ -e "$repofile" ]]; then
      # Backup existing repo file and set ownership to the user
      pkexec cp $repofile $repofilebak \
      && pkexec chown $USER "$backup_file" \
      && echo "Backup created in your home folder."

      # Remove the repo file
      pkexec rm $repofile \
      && echo "COPR Repository $author/$reponame removed." \
      || echo "ERROR removing COPR repository."
  else
      # search for the reponame
      echo "Repo with name $author/$reponame not found, trying a search..."

      result=$(grep -ril --include='*.repo' "$reponame" /etc/yum.repos.d/)
      # if not found, exit
      if [[ -z "$result" ]]; then
          echo "No repositories containing '$reponame' were found." \
          && break
      else
          # if found, make sure it is the right one
          read -rp "Repo '$result' was found. Do you want to backup and remove this repo? (Y/N) " answer
          if [[ "${answer,,}" == "y" ]]; then
              pkexec cp "$result" "$backup_file" \
              && pkexec chown "$(whoami)" "$backup_file" \
              && pkexec rm "$result" \
              && echo "COPR Repository '$reponame' removed." \
              || echo "ERROR removing COPR repository."
          fi
      fi
  fi

# list only COPR repositories
elif [[ "$1" == "list" ]]; then
 find /etc/yum.repos.d/ -type f -name '_copr*' -exec basename {} \; | sed 's/_copr_//; s/\.repo$//'

# search, this is just implemented through the browser
elif [[ "$1" == "search" ]]; then
 xdg-open "https://copr.fedorainfracloud.org/coprs/fulltext/?fulltext=$2"

# disable a repo
elif [[ "$1" == "disable" ]]; then
  sed 's/enabled=1/enabled=0/g' $repofile > /dev/null \
  && echo "Repository $author/$reponame disabled." \
  || echo "Already disabled or repo not found."

# display the helptext
elif [[ "$1" == "-h" || "$1" == "--h" || "$1" == "-help" || "$1" == "--help" || "$1" == "help" ]]; then
 echo "$helptext"
fi

##### SECURE REPO FILES #####
# changing unix permissions to make them root-owned and read-only by world
# chang SELinux labels to "system_u:object_r:system_conf_t:s0" like the default Fedora repos

echo "Securing the repo files against manipulation. Please enter your password one last time."
pkexec sh -c "chown root:root /etc/yum.repos.d/* && \
               chmod 744 /etc/yum.repos.d/* && \
               chcon -R system_u:object_r:system_conf_t:s0 /etc/yum.repos.d/" || { echo "Failed to secure the repo files!"; exit 1; }
echo