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add smart response checks for ref discovery (#1942)

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* add smart response checks for ref discovery

Added content-type check and content regex check for reference discovery
see https://github.com/schacon/igithub/blob/master/http-protocol.txt

* move ref check constants to TRANSPORT class

the check constants - content regex and responce Content-Type - don't have to be global right now so moved from zif_abapgit_definitionsto zcl_abapgit_git_transport

* PP and activate
This commit is contained in:
Domi Bigl 2018-09-25 16:01:43 +02:00 committed by Lars Hvam
parent d21bbb6caa
commit ab1fce00fe
3 changed files with 50 additions and 13 deletions
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15
src/git/zcl_abapgit_git_transport.clas.abap
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@ -33,6 +33,12 @@ CLASS zcl_abapgit_git_transport DEFINITION
receive TYPE string VALUE 'receive', "#EC NOTEXT
upload TYPE string VALUE 'upload', "#EC NOTEXT
END OF c_service.
CONSTANTS: BEGIN OF c_smart_response_check,
BEGIN OF get_refs,
content_regex TYPE string VALUE '^[0-9a-f]{4}#',
content_type TYPE string VALUE 'application/x-git-<service>-pack-advertisement',
END OF get_refs,
END OF c_smart_response_check.
CLASS-METHODS branch_list
IMPORTING iv_url TYPE string
@ -83,12 +89,19 @@ CLASS zcl_abapgit_git_transport IMPLEMENTATION.
METHOD branch_list.
DATA: lv_data TYPE string.
DATA: lv_expected_content_type TYPE string.
eo_client = zcl_abapgit_http=>create_by_url(
iv_url = iv_url
iv_service = iv_service ).
lv_expected_content_type = c_smart_response_check-get_refs-content_type.
REPLACE '<service>' IN lv_expected_content_type WITH iv_service.
eo_client->check_smart_response(
iv_expected_content_type = lv_expected_content_type
iv_content_regex = c_smart_response_check-get_refs-content_regex ).
lv_data = eo_client->get_cdata( ).
CREATE OBJECT eo_branch_list

36
src/zcl_abapgit_http_client.clas.abap
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@ -9,15 +9,17 @@ CLASS zcl_abapgit_http_client DEFINITION PUBLIC CREATE PUBLIC.
set_digest
IMPORTING io_digest TYPE REF TO zcl_abapgit_http_digest,
send_receive_close
IMPORTING
iv_data TYPE xstring
RETURNING
VALUE(rv_data) TYPE xstring
IMPORTING iv_data TYPE xstring
RETURNING VALUE(rv_data) TYPE xstring
RAISING zcx_abapgit_exception,
get_cdata
RETURNING VALUE(rv_value) TYPE string,
check_http_200
RAISING zcx_abapgit_exception,
check_smart_response
IMPORTING iv_expected_content_type TYPE string
iv_content_regex TYPE string
RAISING zcx_abapgit_exception,
send_receive
RAISING zcx_abapgit_exception,
set_headers
@ -33,7 +35,7 @@ ENDCLASS.
CLASS ZCL_ABAPGIT_HTTP_CLIENT IMPLEMENTATION.
CLASS zcl_abapgit_http_client IMPLEMENTATION.
METHOD check_http_200.
@ -41,7 +43,6 @@ CLASS ZCL_ABAPGIT_HTTP_CLIENT IMPLEMENTATION.
DATA: lv_code TYPE i,
lv_text TYPE string.
mi_client->response->get_status(
IMPORTING
code = lv_code ).
@ -66,6 +67,29 @@ CLASS ZCL_ABAPGIT_HTTP_CLIENT IMPLEMENTATION.
ENDMETHOD. "http_200
METHOD check_smart_response.
DATA: lv_content_type TYPE string.
DATA: lv_data TYPE string.
IF iv_expected_content_type IS NOT INITIAL.
lv_content_type = mi_client->response->get_content_type( ).
IF lv_content_type <> iv_expected_content_type.
zcx_abapgit_exception=>raise( 'Wrong Content-Type sent by server - no fallback to the dumb protocol!' ).
ENDIF.
ENDIF.
IF iv_content_regex IS NOT INITIAL.
lv_data = mi_client->response->get_cdata( ).
FIND REGEX iv_content_regex IN lv_data.
IF sy-subrc <> 0.
zcx_abapgit_exception=>raise( 'Wrong Content sent by server' ).
ENDIF.
ENDIF.
ENDMETHOD.
METHOD close.
mi_client->close( ).
ENDMETHOD.