Add utility library libgluonutil
This commit is contained in:
Matthias Schiffer
parent
54ed2a8d14
commit
840d07dd48
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include $(TOPDIR)/rules.mk
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PKG_NAME:=libgluonutil
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PKG_VERSION:=1
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CMAKE_INSTALL:=1
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PKG_LICENSE:=BSD-2-Clause
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PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
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include $(INCLUDE_DIR)/package.mk
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include $(INCLUDE_DIR)/cmake.mk
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define Package/libgluonutil
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SECTION:=libs
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CATEGORY:=Libraries
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TITLE:=Gluon utility library
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DEPENDS:=+libjson-c
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endef
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CMAKE_OPTIONS += \
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-DCMAKE_BUILD_TYPE:String="MINSIZEREL"
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define Build/Prepare
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mkdir -p $(PKG_BUILD_DIR)
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$(CP) ./src/* $(PKG_BUILD_DIR)/
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endef
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define Package/libgluonutil/install
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$(INSTALL_DIR) $(1)/usr/lib
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$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/lib/libgluonutil.so $(1)/usr/lib/
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endef
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$(eval $(call BuildPackage,libgluonutil))
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cmake_minimum_required(VERSION 2.6)
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set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
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project(libgluonutil C)
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set(LIBDIR "lib${LIB_SUFFIX}")
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find_package(JSON_C REQUIRED)
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set_property(DIRECTORY PROPERTY COMPILE_DEFINITIONS _GNU_SOURCE)
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add_library(gluonutil SHARED libgluonutil.c)
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set_property(TARGET gluonutil PROPERTY COMPILE_FLAGS "-Wall -std=c99 ${JSON_C_CFLAGS_OTHER}")
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set_property(TARGET gluonutil PROPERTY LINK_FLAGS "${JSON_C_LDFLAGS_OTHER}")
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set_property(TARGET gluonutil APPEND PROPERTY INCLUDE_DIRECTORIES ${JSON_C_INCLUDE_DIR})
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target_link_libraries(gluonutil ${JSON_C_LIBRARIES})
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install(TARGETS gluonutil
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ARCHIVE DESTINATION ${LIBDIR}
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LIBRARY DESTINATION ${LIBDIR}
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)
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install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/libgluonutil.h DESTINATION include)
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# Defines the following variables:
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# JSON_C_FOUND
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# JSON_C_INCLUDE_DIR
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# JSON_C_LIBRARIES
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# JSON_C_CFLAGS_OTHER
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# JSON_C_LDFLAGS_OTHER
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find_package(PkgConfig REQUIRED QUIET)
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pkg_check_modules(_JSON_C json-c)
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find_path(JSON_C_INCLUDE_DIR NAMES json-c/json.h HINTS ${_JSON_C_INCLUDE_DIRS})
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find_library(JSON_C_LIBRARIES NAMES json-c HINTS ${_JSON_C_LIBRARY_DIRS})
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set(JSON_C_CFLAGS_OTHER "${_JSON_C_CFLAGS_OTHER}" CACHE STRING "Additional compiler flags for json-c")
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set(JSON_C_LDFLAGS_OTHER "${_JSON_C_LDFLAGS_OTHER}" CACHE STRING "Additional linker flags for json-c")
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find_package_handle_standard_args(JSON_C REQUIRED_VARS JSON_C_LIBRARIES JSON_C_INCLUDE_DIR)
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mark_as_advanced(JSON_C_INCLUDE_DIR JSON_C_LIBRARIES JSON_C_CFLAGS_OTHER JSON_C_LDFLAGS_OTHER)
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/*
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Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "libgluonutil.h"
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#include <json-c/json.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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char * gluonutil_read_line(const char *filename) {
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FILE *f = fopen(filename, "r");
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if (!f)
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return NULL;
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char *line = NULL;
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size_t len = 0;
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ssize_t r = getline(&line, &len, f);
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fclose(f);
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if (r >= 0) {
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len = strlen(line);
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if (len && line[len-1] == '\n')
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line[len-1] = 0;
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}
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else {
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free(line);
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line = NULL;
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}
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return line;
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}
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char * gluonutil_get_sysconfig(const char *key) {
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if (strchr(key, '/'))
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return NULL;
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const char prefix[] = "/lib/gluon/core/sysconfig/";
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char path[strlen(prefix) + strlen(key) + 1];
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snprintf(path, sizeof(path), "%s%s", prefix, key);
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return gluonutil_read_line(path);
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}
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char * gluonutil_get_node_id(void) {
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char *node_id = gluonutil_get_sysconfig("primary_mac");
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if (!node_id)
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return NULL;
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char *in = node_id, *out = node_id;
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do {
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if (*in != ':')
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*out++ = *in;
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} while (*in++);
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return node_id;
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}
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char * gluonutil_get_interface_address(const char *ifname) {
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const char *format = "/sys/class/net/%s/address";
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char path[strlen(format) + strlen(ifname) - 1];
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snprintf(path, sizeof(path), format, ifname);
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return gluonutil_read_line(path);
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}
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struct json_object * gluonutil_wrap_string(const char *str) {
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if (!str)
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return NULL;
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return json_object_new_string(str);
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}
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struct json_object * gluonutil_wrap_and_free_string(char *str) {
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struct json_object *ret = gluonutil_wrap_string(str);
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free(str);
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return ret;
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}
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struct json_object * gluonutil_load_site_config(void) {
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return json_object_from_file("/lib/gluon/site.json");
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}
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@ -0,0 +1,40 @@
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/*
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Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LIBGLUON_LIBGLUON_H_
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#define _LIBGLUON_LIBGLUON_H_
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char * gluonutil_read_line(const char *filename);
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char * gluonutil_get_sysconfig(const char *key);
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char * gluonutil_get_node_id(void);
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char * gluonutil_get_interface_address(const char *ifname);
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struct json_object * gluonutil_wrap_string(const char *str);
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struct json_object * gluonutil_wrap_and_free_string(char *str);
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struct json_object * gluonutil_load_site_config(void);
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#endif /* _LIBGLUON_LIBGLUON_H_ */
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