# Copyright (C) 2002-2023 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.

# test debuginfod with readelf and objdump

set test "debuginfod"

if {[which debuginfod] == 0} {
    unsupported "$test (not found)"
    return
}

if {[which curl] == 0} {
    unsupported "$test (curl not found)"
    return
}

if { ![is_elf_format] || ![isnative] } {
    unsupported "$test (unsupported target)"
    return
}

if { [which $OBJDUMP] == 0} {
    perror "$test $OBJDUMP (does not exist)"
    return
}

 if { [which $READELF] == 0} {
    perror "$test $READELF (does not exist)"
    return
}

# Compile testprog.c, move the debuginfo to a separate file and add .gnu_debuglink.
if { [target_compile $srcdir/$subdir/testprog.c tmpdir/testprog executable "debug additional_flags=-Wl,--build-id"] != ""} {
    unsupported "$test (compilation failed)"
    return
}

if { [binutils_run $OBJCOPY "--only-keep-debug tmpdir/testprog tmpdir/testprog.debug"] != "" } {
    fail "$test (create separate debug info file)"
    return
}

if { [binutils_run $OBJCOPY "--strip-debug tmpdir/testprog"] != "" } {
    fail "$test (strip debug info)"
    return
}

if { [binutils_run $OBJCOPY "--add-gnu-debuglink=tmpdir/testprog.debug tmpdir/testprog"] != "" } {
    fail "$test (add debuglink)"
    return
}

# Assemble an elf file with a debugaltlink
if { ![binutils_assemble $srcdir/$subdir/debuglink.s tmpdir/debuglink.o] } {
    fail "$test (assemble debuglink)"
}

if { ![binutils_assemble $srcdir/$subdir/linkdebug.s tmpdir/linkdebug.debug] } {
    fail "$test (assemble linkdebug)"
}

set cache [file join [pwd] "tmpdir/.debuginfod_cache"]
set db [file join [pwd] "tmpdir/.debuginfod.db"]

setenv DEBUGINFOD_URLS ""
setenv DEBUGINFOD_TIMEOUT 30
setenv DEBUGINFOD_CACHE_PATH $cache

# Move debug files into another directory so that readelf and objdump cannot
# find them without debuginfod.
file mkdir tmpdir/dbg
file rename -force tmpdir/testprog.debug tmpdir/dbg
file rename -force tmpdir/linkdebug.debug tmpdir/dbg

# Remove old cache and database if they exist.
file delete -force $cache
file delete -force $db

# Check whether objdump and readelf are configured with debuginfod.
# To check this we attempt to follow a broken debuglink. If configured
# with debuginfod the output will contain the debuginfod URLs that were
# queried (these queries fail since the server is not yet running).
set conf_objdump [binutils_run $OBJDUMP "-Wk tmpdir/testprog"]
set conf_readelf [binutils_run $READELF "-wk tmpdir/testprog"]

# Find an unused port
set port 7999
set found 0
while { ! $found } {
  incr port
  if { $port == 65536 } {
    untested "$test (no available ports)"
    return
  }

  spawn debuginfod -vvvv -d $db -p $port -F tmpdir/dbg
  expect {
    "started http server on IPv4 IPv6 port=$port" {
      set found 1
    }
    "Failed to bind to port" {
      exec kill -INT -[exp_pid]
      catch {close}; catch {wait -i $spawn_id}
    }
    timeout {
      fail "$test (find port timeout)"
      return
    }
  }
}

set metrics [list "ready 1" \
             "thread_work_total{role=\"traverse\"} 1" \
             "thread_work_pending{role=\"scan\"} 0" \
             "thread_busy{role=\"scan\"} 0"]

# Check server metrics to confirm init has completed.
foreach m $metrics {
  set timelim 20
  while { $timelim != 0 } {
    sleep 0.5

    catch {exec curl -s http://127.0.0.1:$port/metrics} got

    if { [regexp $m $got] } {
      break
    }

    incr timelim -1
  }

  if { $timelim == 0 } {
    fail "$test (server init timeout)"
    exec kill -INT -[exp_pid]
    catch {close}; catch {wait -i $spawn_id}
    return
  }
}

setenv DEBUGINFOD_URLS http://127.0.0.1:$port

# Test whether prog can fetch separate debuginfo using debuginfod
# if it's configured to do so.
proc test_fetch_debuglink { prog progargs } {
    global test
    global cache

    set got [binutils_run $prog "$progargs tmpdir/testprog"]

    if { [regexp ".*Found separate debug info file.*Contents\[^\n\]*loaded from\[^\n\]*" $got] } {
       pass "$test ($prog debuglink)"
    } else {
       fail "$test ($prog did not find debuglink to cache $cache)"
    }
}

# Test whether prog can fetch debugaltlink files using debuginfod
# if it's configured to do so.
proc test_fetch_debugaltlink { prog progargs } {
    global test
    global cache

    set got [binutils_run $prog "$progargs tmpdir/debuglink.o"]
    set buildid "00112233445566778899aabbccddeeff0123456789abcdef"

    if { [regexp ".*Found separate debug info file\[^\n\]*$cache/$buildid" $got] } {
        pass "$test ($prog debugaltlink)"
    } else {
        fail "$test ($prog could not load debugaltlink)"
    }
}

if { [regexp ".*DEBUGINFOD.*" $conf_objdump] } {
    test_fetch_debuglink $OBJDUMP "-W -WD"
    test_fetch_debugaltlink $OBJDUMP "-Wk"

    set test "disabling debuginfod access"
    setup_xfail *-*-*
    test_fetch_debuglink $OBJDUMP "-W -WE"
    set test "debuginfod"

} else {
    untested "$test (objdump not configured with debuginfod)"
}

if { [regexp ".*DEBUGINFOD.*" $conf_readelf] } {
    test_fetch_debuglink $READELF "-w"
    test_fetch_debugaltlink $READELF "-wk"

    set test "disabling debuginfod access"
    setup_xfail *-*-*
    test_fetch_debuglink $READELF "-w -wE"
    set test "debuginfod"

} else {
    untested "$test (readelf not configured with debuginfod)"
}