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test now

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This commit is contained in:
wiaamm
2025-12-10 10:01:40 +02:00
parent a564f1536f
commit 86d6d5113d
2 changed files with 62 additions and 28 deletions
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83
attachments/kong/plugins/open-appsec-waf-kong-plugin/handler.lua
View File

@@ -14,37 +14,47 @@ end
function NanoHandler.access(conf)
kong.log.err("NanoHandler access phase started")
-- Check if we already have a finalized session from a previous phase
local ctx = kong.ctx.plugin
if nano.is_session_finalized(ctx.session_data) then
kong.log.info("Session has already been inspected, no need for further inspection")
return
end
local headers = kong.request.get_headers()
local session_id = nano.generate_session_id()
-- I don't think we need to set this header, but keeping it for now
kong.service.request.set_header("x-session-id", tostring(session_id))
kong.log.err("NanoHandler access phase generate session_id: ", session_id)
local session_data = nano.init_session(session_id)
if not session_data then
kong.log.err("Failed to initialize session - failing open")
--kong.log.err("Failed to initialize session - failing open")
kong.ctx.plugin.cleanup_needed = false
return
end
kong.log.err("NanoHandler access phase initialized session_data")
kong.ctx.plugin.session_data = session_data
kong.ctx.plugin.session_id = session_id
local meta_data = nano.handle_start_transaction()
kong.ctx.plugin.meta_data = meta_data -- Keep reference to prevent GC
--kong.log.err("NanoHandler access phase handled start transaction metadata: ", meta_data)
if not meta_data then
kong.log.err("Failed to handle start transaction - failing open")
kong.ctx.plugin.cleanup_needed = true
return
end
kong.log.err("NanoHandler access phase handled start transaction")
--kong.log.err("NanoHandler access phase handled start transaction")
local req_headers = nano.handleHeaders(headers)
kong.ctx.plugin.req_headers = req_headers -- Keep reference to prevent GC
--kong.log.err("NanoHandler access phase handled request headers: ", req_headers)
if not req_headers then
kong.log.err("Failed to handle request headers - failing open")
kong.ctx.plugin.cleanup_needed = true
return
end
kong.log.err("NanoHandler access phase handled request headers")
local has_content_length = tonumber(ngx.var.http_content_length) and tonumber(ngx.var.http_content_length) > 0
local contains_body = has_content_length and 1 or 0
@@ -54,10 +64,9 @@ function NanoHandler.access(conf)
kong.ctx.plugin.cleanup_needed = true
return nano.handle_custom_response(session_data, response)
end
kong.log.err("NanoHandler access phase sent request filter data")
if contains_body == 1 then
kong.log.err("Request body expected, inspecting body")
--kong.log.err("Request body expected, inspecting body")
local body = kong.request.get_raw_body()
if body and #body > 0 then
kong.log.debug("Request body found in memory, size: ", #body)
@@ -67,7 +76,7 @@ function NanoHandler.access(conf)
return nano.handle_custom_response(session_data, response)
end
else
kong.log.err("Request body not found in memory, checking nginx vars")
--kong.log.err("Request body not found in memory, checking nginx vars")
kong.log.debug("Request body not in memory, attempting to read from buffer/file")
local body_data = ngx.var.request_body
@@ -111,19 +120,16 @@ function NanoHandler.access(conf)
end
end
local verdict, response = nano.AttachmentVerdict.INSPECT, nil
local ok, pcall_verdict, pcall_response = pcall(function()
local ok, verdict, response = pcall(function()
return nano.end_inspection(session_id, session_data, nano.HttpChunkType.HTTP_REQUEST_END)
end)
if not ok then
kong.log.err("Error ending request inspection: ", pcall_verdict, " - failing open")
kong.log.err("Error ending request inspection: ", verdict, " - failing open")
kong.ctx.plugin.cleanup_needed = true
return
end
verdict, response = pcall_verdict, pcall_response
if verdict == nano.AttachmentVerdict.DROP then
kong.ctx.plugin.cleanup_needed = true
return nano.handle_custom_response(session_data, response)
@@ -142,6 +148,11 @@ function NanoHandler.header_filter(conf)
kong.log.err("NanoHandler header_filter phase started")
local ctx = kong.ctx.plugin
if nano.is_session_finalized(ctx.session_data) then
kong.log.info("Session has already been inspected, no need for further inspection")
return
end
if ctx.cleanup_needed then
kong.log.debug("cleanup in header_filter, passing through")
return
@@ -150,6 +161,7 @@ function NanoHandler.header_filter(conf)
local session_id = ctx.session_id
local session_data = ctx.session_data
if not session_id or not session_data then
kong.log.debug("No session data found in header_filter - session_id:", session_id, " session_data:", session_data)
return
@@ -157,25 +169,39 @@ function NanoHandler.header_filter(conf)
local headers = kong.response.get_headers()
local header_data = nano.handleHeaders(headers)
kong.log.err("NanoHandler header_filter phase handled response headers")
--kong.log.err("NanoHandler header_filter phase handled response headers")
ctx.res_headers = header_data -- Keep reference to prevent GC
if not header_data then
kong.log.err("Failed to handle response headers - failing open")
--kong.log.err("Failed to handle response headers - failing open")
ctx.cleanup_needed = true
return
end
local status_code = kong.response.get_status()
local content_length = tonumber(headers["content-length"]) or 0
konhg.log.err("NanoHandler header_filter phase sending response headers to C module, status_code: ", status_code, " content_length: ", content_length)
local verdict, response = nano.send_response_headers(session_id, session_data, header_data, status_code, content_length)
if verdict == nano.AttachmentVerdict.DROP then
kong.ctx.plugin.cleanup_needed = true
return nano.handle_custom_response(session_data, response)
end
kong.log.err("NanoHandler header_filter phase sent response headers")
--kong.log.err("NanoHandler header_filter phase sent response headers")
ctx.expect_body = not (status_code == 204 or status_code == 304 or (100 <= status_code and status_code < 200) or content_length == 0)
-- If no body is expected (like Envoy's endStream=true), end inspection immediately
if not ctx.expect_body then
--kong.log.err("No response body expected, ending inspection in header_filter")
verdict, response = nano.end_inspection(session_id, session_data, nano.HttpChunkType.HTTP_RESPONSE_END)
if verdict == nano.AttachmentVerdict.DROP then
kong.log.err("DROP verdict after response end inspection")
ctx.cleanup_needed = true
return nano.handle_custom_response(session_data, response)
end
ctx.cleanup_needed = true
end
end
function NanoHandler.body_filter(conf)
@@ -183,6 +209,10 @@ function NanoHandler.body_filter(conf)
local ctx = kong.ctx.plugin
local chunk = ngx.arg[1]
local eof = ngx.arg[2]
if nano.is_session_finalized(ctx.session_data) then
kong.log.info("Session has already been inspected, no need for further inspection")
return
end
if ctx.cleanup_needed then
kong.log.debug("cleanup chunk without inspection, passing through")
@@ -207,19 +237,19 @@ function NanoHandler.body_filter(conf)
return
end
kong.log.err("Inspecting response body chunk")
--kong.log.err("Inspecting response body chunk")
if chunk and #chunk > 0 then
kong.log.err("Response body chunk size: ", #chunk)
--kong.log.err("Response body chunk size: ", #chunk)
ctx.body_buffer_chunk = ctx.body_buffer_chunk or 0
ctx.body_seen = true
local verdict, response, modifications = nano.send_body(session_id, session_data, chunk, nano.HttpChunkType.HTTP_RESPONSE_BODY)
kong.log.err("after Sent response body chunk to C module")
--kong.log.err("after Sent response body chunk to C module")
if modifications then
chunk = nano.handle_body_modifications(chunk, modifications, ctx.body_buffer_chunk)
ngx.arg[1] = chunk
end
kong.log.err("after Handling response body modifications")
--kong.log.err("after Handling response body modifications")
ctx.body_buffer_chunk = ctx.body_buffer_chunk + 1
@@ -233,11 +263,11 @@ function NanoHandler.body_filter(conf)
end
if eof then
kong.log.err("Response body EOF reached")
--kong.log.err("Response body EOF reached")
kong.log.debug("End of response body reached in body_filter")
if ctx.body_seen or ctx.expect_body == false then
kong.log.err("Ending response inspection")
--kong.log.err("Ending response inspection")
local verdict, response = nano.end_inspection(session_id, session_data, nano.HttpChunkType.HTTP_RESPONSE_END)
if verdict == nano.AttachmentVerdict.DROP then
kong.log.debug("Dropping response in body_filter after end_inspection")
@@ -246,7 +276,7 @@ function NanoHandler.body_filter(conf)
ngx.arg[2] = true
return nano.handle_custom_response(session_data, response)
end
kong.log.err("Response inspection ended successfully")
--kong.log.err("Response inspection ended successfully")
end
ctx.cleanup_needed = true
@@ -259,10 +289,13 @@ function NanoHandler.log(conf)
if ctx.cleanup_needed then
nano.fini_session(ctx.session_data)
nano.cleanup_all()
collectgarbage("restart")
collectgarbage("collect")
-- Clear context references to allow GC
ctx.session_data = nil
ctx.session_id = nil
ctx.meta_data = nil
ctx.req_headers = nil
ctx.res_headers = nil
collectgarbage("collect")
end
end

5
attachments/kong/plugins/open-appsec-waf-kong-plugin/nano_ffi.lua
View File

@@ -229,7 +229,7 @@ function nano.is_session_finalized(session_data)
if not attachment or not session_data then
kong.log.err("Cannot check session finalization: Invalid attachment or session_data")
return false
return true
end
return nano_attachment.is_session_finalized(attachment, session_data)
@@ -256,8 +256,8 @@ function nano.handle_start_transaction()
)
table.insert(nano.allocated_metadata, metadata)
collectgarbage("stop")
kong.log.err("Generated start transaction metadata: ", metadata)
return metadata
end
@@ -295,6 +295,7 @@ function nano.handleHeaders(headers)
end
nano_attachment.setHeaderCount(header_data, index)
kong.log.err("Processed headers into header_data : ", header_data)
return header_data
end