Process plugins - Introduce SMTP process plugin

Author: Zainullin Damir

src/plugins/process/smtp/CMakeLists.txt

@@ -3,16 +3,23 @@ project(ipfixprobe-process-smtp VERSION 1.0.0 DESCRIPTION "ipfixprobe-process-sm
 add_library(ipfixprobe-process-smtp MODULE
 	src/smtp.cpp
 	src/smtp.hpp
+	src/smtpContext.hpp
+	src/smtpFields.hpp
+	src/smtpCommand.hpp
+	src/smtpStatusCode.hpp
 )
 
 set_target_properties(ipfixprobe-process-smtp PROPERTIES
 	CXX_VISIBILITY_PRESET hidden
 	VISIBILITY_INLINES_HIDDEN YES
 )
 
-target_include_directories(ipfixprobe-process-smtp PRIVATE
+target_include_directories(ipfixprobe-process-smtp PRIVATE 
 	${CMAKE_SOURCE_DIR}/include/
+	${CMAKE_SOURCE_DIR}/include/ipfixprobe/processPlugin
+	${CMAKE_SOURCE_DIR}/include/ipfixprobe/pluginFactory
 	${CMAKE_SOURCE_DIR}/src/plugins/process/common
+	${adaptmon_SOURCE_DIR}/lib/include/public/
 )
 
 if(ENABLE_NEMEA)

src/plugins/process/smtp/README.md

@@ -0,0 +1,40 @@
+# SMTP Plugin
+
+The **SMTP Plugin** parses SMTP data and exports relevant fields.
+
+## Features
+
+- Decision about the communication direction is made based on the SMTP port (25).
+
+## Output Fields
+
+| Field Name                 | Data Type  | Description                                        |
+| -------------------------- | ---------- | -------------------------------------------------- |
+| `SMTP_2XX_STAT_CODE_COUNT` | `uint32_t` | Count of SMTP status codes between 200 and 300     |
+| `SMTP_3XX_STAT_CODE_COUNT` | `uint32_t` | Count of SMTP status codes between 300 and 400     |
+| `SMTP_4XX_STAT_CODE_COUNT` | `uint32_t` | Count of SMTP status codes between 400 and 500     |
+| `SMTP_5XX_STAT_CODE_COUNT` | `uint32_t` | Count of SMTP status codes between 500 and 600     |
+| `SMTP_COMMAND_FLAGS`       | `uint32_t` | Cumulative representing the SMTP commands used     |
+| `SMTP_MAIL_CMD_COUNT`      | `uint32_t` | Count of MAIL commands received                    |
+| `SMTP_RCPT_CMD_COUNT`      | `uint32_t` | Count of RCPT commands received                    |
+| `SMTP_STAT_CODE_FLAGS`     | `uint32_t` | Cumulative representing observed SMTP status codes |
+| `SMTP_DOMAIN`              | `string`   | Domain of the SMTP session                         |
+| `SMTP_FIRST_RECIPIENT`     | `string`   | First recipient of the SMTP session                |
+| `SMTP_FIRST_SENDER`        | `string`   | First sender of the SMTP session                   |
+
+## Usage
+
+### YAML Configuration
+
+Add the plugin to your ipfixprobe YAML configuration:
+
+```yaml
+process_plugins:
+  - smtp
+```
+
+### CLI Usage
+
+You can also enable the plugin directly from the command line:
+
+`ipfixprobe -p smtp ...`