Move source code to SRC folder and start doxygen

CMakeLists.txt

@@ -2,17 +2,32 @@ cmake_minimum_required(VERSION 3.5)
 
 project(patchelfcrc LANGUAGES C)
 
+if(NOT WIN32)
+  string(ASCII 27 Esc)
+  set(ColorReset "${Esc}[m")
+  set(ColorBold  "${Esc}[1m")
+  set(Red         "${Esc}[31m")
+  set(Green       "${Esc}[32m")
+  set(Yellow      "${Esc}[33m")
+  set(Blue        "${Esc}[34m")
+  set(Magenta     "${Esc}[35m")
+  set(Cyan        "${Esc}[36m")
+  set(White       "${Esc}[37m")
+  set(BoldRed     "${Esc}[1;31m")
+  set(BoldGreen   "${Esc}[1;32m")
+  set(BoldYellow  "${Esc}[1;33m")
+  set(BoldBlue    "${Esc}[1;34m")
+  set(BoldMagenta "${Esc}[1;35m")
+  set(BoldCyan    "${Esc}[1;36m")
+  set(BoldWhite   "${Esc}[1;37m")
+endif()
+
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(ELF REQUIRED libelf)
 
-set (CFILES
-	main.c
-	version.c
-	named_crcs.c
-	crc.c
-	elfpatch.c
-	reporting.c
-)
+find_package(Doxygen)
+
+aux_source_directory("src" CFILES)
 
 set(GEN_HEADER_PATH "${CMAKE_CURRENT_BINARY_DIR}/include/generated")
 
@@ -38,4 +53,26 @@ target_include_directories(${PROJECT_NAME} PRIVATE "${CMAKE_CURRENT_BINARY_DIR}/
 target_include_directories(${PROJECT_NAME} PRIVATE "include")
 add_dependencies(${PROJECT_NAME} version-header)
 
+if (DOXYGEN_FOUND)
+	set(DOXYFILE_SRC "${CMAKE_CURRENT_SOURCE_DIR}/doxygen/Doxyfile.in")
+	set(DOXYFILE_DEST "${CMAKE_CURRENT_BINARY_DIR}/Doxyfile")
+	configure_file(${DOXYFILE_SRC} ${DOXYFILE_DEST} @ONLY)
+	add_custom_target(doxygen
+		DEPENDS
+			doxygen-version-header
+		COMMAND
+			${DOXYGEN_EXECUTABLE} ${DOXYFILE_DEST}
+		WORKING_DIRECTORY
+			${CMAKE_CURRENT_SOURCE_DIR}
+	)
 
+	add_custom_target(doxygen-version-header
+		COMMAND
+			bash ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/gen-version-string.sh "${CMAKE_CURRENT_BINARY_DIR}/doxyversion.in"
+		WORKING_DIRECTORY
+			${CMAKE_CURRENT_SOURCE_DIR}
+	)
+else (DOXYGEN_FOUND)
+	message("${BoldMagenta}Doxygen needs to be installed to generate the doxygen documentation${ColorReset}")
+	message("${BoldMagenta}doxygen target will not be available${ColorReset}")
+endif (DOXYGEN_FOUND)

doxygen/gen-version-string.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if [[ -z $1 ]]; then
+	exit -1
+fi
+
+echo "PROJECT_NUMBER = `git describe --tags --always --dirty`" > $1

include/patchelfcrc/crc-output-struct.h

@@ -1,3 +1,20 @@
+/*
+ * This file is part of patchelfcrc.
+ * Copyright (c) 2022 Mario Hüttel.
+ *
+ * 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, version 2 only.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef _CRC_OUTPUT_STRUCT_H_
 #define _CRC_OUTPUT_STRUCT_H_
 

include/patchelfcrc/elfpatch.h

@@ -1,3 +1,25 @@
+/*
+ * This file is part of patchelfcrc.
+ * Copyright (c) 2022 Mario Hüttel.
+ *
+ * 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, version 2 only.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file elfpatch.h
+ * @brief Header for ELF Patching Class
+ */
+
 #ifndef _ELFPATCH_H_
 #define _ELFPATCH_H_
 
@@ -28,6 +50,16 @@ elfpatch_handle_t *elf_patch_open(const char *path, bool readonly);
  */
 int elf_patch_check_for_section(elfpatch_handle_t *ep, const char *section);
 
+/**
+ * @brief Compute CRC over a section in an ELF file
+ * @param ep Elf patch object
+ * @param section Section name
+ * @param[out] crc CRC output
+ * @param granularity CRC calculation granularity
+ * @param little_endian memory layout is little endian
+ * @return 0 if successful
+ * @return negative if error
+ */
 int elf_patch_compute_crc_over_section(elfpatch_handle_t *ep, const char *section, struct crc_calc *crc,
                                        enum granularity granularity, bool little_endian);
 

include/patchelfcrc/reporting.h

@@ -1,3 +1,21 @@
+/*
+ * This file is part of patchelfcrc.
+ * Copyright (c) 2022 Mario Hüttel.
+ *
+ * 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, version 2 only.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #ifndef _REPORTING_H_
 #define _REPORTING_H_
 

reporting.c

@@ -1,27 +0,0 @@
-#include <patchelfcrc/reporting.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdbool.h>
-
-static bool global_verbosity_state = false;
-
-void print_debug(const char *fmt, ...)
-{
-	va_list va;
-
-	if (global_verbosity_state) {
-		va_start(va, fmt);
-		(void)vprintf(fmt, va);
-		va_end(va);
-	}
-}
-
-void reporting_enable_verbose(void)
-{
-	global_verbosity_state = true;
-}
-
-bool reporting_get_verbosity(void)
-{
-	return global_verbosity_state;
-}

src/main.c

@@ -53,6 +53,14 @@ struct command_line_options {
 	const char *output_section;
 };
 
+/**
+ * @brief Parse command line options
+ * @param key Option key
+ * @param arg Argument passed
+ * @param state State of ARGP parser
+ * @return 0 No error
+ * @return ARGP_ERR_UNKNOWN in case of an unknown option
+ */
 static error_t parse_opt(int key, char *arg, struct argp_state *state)
 {
 	struct command_line_options *args = (struct command_line_options *)state->input;
@@ -324,6 +332,12 @@ static int compute_crcs(elfpatch_handle_t *ep, SlList *list, const struct comman
 	return ret;
 }
 
+/**
+ * @brief Debug-print the CRCs of sections in form of a table
+ * @param[in] list List of section names
+ * @param[in] crcs Array of CRCs.
+ * @note The array @p crcs must be at least as long as @p list
+ */
 static void print_crcs(SlList *list, const uint32_t *crcs)
 {
 	SlList *iter;

src/reporting.c

@@ -0,0 +1,45 @@
+/*
+ * This file is part of patchelfcrc.
+ * Copyright (c) 2022 Mario Hüttel.
+ *
+ * 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, version 2 only.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <patchelfcrc/reporting.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdbool.h>
+
+static bool global_verbosity_state = false;
+
+void print_debug(const char *fmt, ...)
+{
+	va_list va;
+
+	if (global_verbosity_state) {
+		va_start(va, fmt);
+		(void)vprintf(fmt, va);
+		va_end(va);
+	}
+}
+
+void reporting_enable_verbose(void)
+{
+	global_verbosity_state = true;
+}
+
+bool reporting_get_verbosity(void)
+{
+	return global_verbosity_state;
+}