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#=============================================================================
# Copyright 2008-2013 Kitware, Inc.
# Copyright 2016 Ruslan Baratov
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
cmake_minimum_required(VERSION 3.5)
function(check_file_hash has_hash hash_is_good)
if("${has_hash}" STREQUAL "")
message(FATAL_ERROR "has_hash Can't be empty")
endif()
if("${hash_is_good}" STREQUAL "")
message(FATAL_ERROR "hash_is_good Can't be empty")
endif()
if("@ALGO@" STREQUAL "")
# No check
set("${has_hash}" FALSE PARENT_SCOPE)
set("${hash_is_good}" FALSE PARENT_SCOPE)
return()
endif()
set("${has_hash}" TRUE PARENT_SCOPE)
message(STATUS "verifying file...
file='@LOCAL@'")
file("@ALGO@" "@LOCAL@" actual_value)
if(NOT "${actual_value}" STREQUAL "@EXPECT_VALUE@")
set("${hash_is_good}" FALSE PARENT_SCOPE)
message(STATUS "@ALGO@ hash of
@LOCAL@
does not match expected value
expected: '@EXPECT_VALUE@'
actual: '${actual_value}'")
else()
set("${hash_is_good}" TRUE PARENT_SCOPE)
endif()
endfunction()
function(sleep_before_download attempt)
if(attempt EQUAL 0)
return()
endif()
if(attempt EQUAL 1)
message(STATUS "Retrying...")
return()
endif()
set(sleep_seconds 0)
if(attempt EQUAL 2)
set(sleep_seconds 5)
elseif(attempt EQUAL 3)
set(sleep_seconds 5)
elseif(attempt EQUAL 4)
set(sleep_seconds 15)
elseif(attempt EQUAL 5)
set(sleep_seconds 60)
elseif(attempt EQUAL 6)
set(sleep_seconds 90)
elseif(attempt EQUAL 7)
set(sleep_seconds 300)
else()
set(sleep_seconds 1200)
endif()
message(STATUS "Retry after ${sleep_seconds} seconds (attempt #${attempt}) ...")
execute_process(COMMAND "${CMAKE_COMMAND}" -E sleep "${sleep_seconds}")
endfunction()
if("@LOCAL@" STREQUAL "")
message(FATAL_ERROR "LOCAL can't be empty")
endif()
if("@REMOTE@" STREQUAL "")
message(FATAL_ERROR "REMOTE can't be empty")
endif()
if(EXISTS "@LOCAL@")
check_file_hash(has_hash hash_is_good)
if(has_hash)
if(hash_is_good)
message(STATUS "File already exists and hash match (skip download):
file='@LOCAL@'
@ALGO@='@EXPECT_VALUE@'"
)
return()
else()
message(STATUS "File already exists but hash mismatch. Removing...")
file(REMOVE "@LOCAL@")
endif()
else()
message(STATUS "File already exists but no hash specified (use URL_HASH):
file='@LOCAL@'
Old file will be removed and new file downloaded from URL."
)
file(REMOVE "@LOCAL@")
endif()
endif()
set(retry_number 5)
foreach(i RANGE ${retry_number})
sleep_before_download(${i})
message(STATUS "downloading...
src='@REMOTE@'
dst='@LOCAL@'
timeout='@TIMEOUT_MSG@'")
@TLS_VERIFY_CODE@
@TLS_CAINFO_CODE@
file(
DOWNLOAD
"@REMOTE@" "@LOCAL@"
@SHOW_PROGRESS@
@TIMEOUT_ARGS@
STATUS status
LOG log
)
list(GET status 0 status_code)
list(GET status 1 status_string)
if(status_code EQUAL 0)
check_file_hash(has_hash hash_is_good)
if(has_hash AND NOT hash_is_good)
message(STATUS "Hash mismatch, removing...")
file(REMOVE "@LOCAL@")
else()
message(STATUS "Downloading... done")
return()
endif()
else()
message("error: downloading '@REMOTE@' failed
status_code: ${status_code}
status_string: ${status_string}
log:
--- LOG BEGIN ---
${log}
--- LOG END ---"
)
endif()
endforeach()
message(FATAL_ERROR "Downloading failed")
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