Dependencies to other libraries
-------------------------------
-- libuci for reading configuration files
+- modified version of is needed libuci for setting the configuration values to config files
Build, install and clean
------------------------
- build with command: ./autobuild.sh (generates required autoconf files)
- install with command: make install
-- clean source code from generated build files: make distclean
+- clean source code from generated build files: make maintainer-clean
-Examples
---------
-See the src_test/test_ha
-"test_ha" is a example application which launches the processes defined in the
-.service files available in the directory "src_test/etc/plp/ha"
-(Note that these files needs to be copied to /etc/plp/ha directory and you must fix from them the ExecStart to executables)
+Examples in src_test directory
+------------------------------
+- "test_ha" is a example application which launches the processes defined in the
+ .service files available in the directory "src_test/etc/plp/ha"
+ (Note that these files needs to be copied to /etc/plp/ha directory and you must fix from them the ExecStart to executables)
+- "test_config" shows how to set and change config file values.
TODO
----
--- /dev/null
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <uci.h>
+
+#include "log.h"
+#include "config.h"
+
+bool set_config_value(const char *conf_dir_name,
+ const char *conf_file_name,
+ const char *section_type,
+ const char *section_name,
+ const char *key,
+ const char *value) {
+ struct uci_context *ctx;
+ struct uci_package *pkg;
+ struct uci_section *sct;
+ struct uci_section *tmp_sct;
+ struct uci_option *opt;
+ int err_flg;
+ char *fname;
+ int b_count;
+ bool save;
+ bool ret_val;
+
+ ret_val = false;
+ save = false;
+ if ((conf_dir_name != NULL) &&
+ (conf_file_name != NULL) &&
+ (section_type != NULL) &&
+ (section_name != NULL) &&
+ (key != NULL) &&
+ (value != NULL)) {
+ b_count = strlen(conf_dir_name) + strlen(conf_file_name) + 10;
+ fname = (char *)calloc(1, b_count);
+ if (fname != NULL) {
+ strncpy(fname, conf_dir_name, b_count);
+ strncat(fname, "/", 1);
+ strncat(fname, conf_file_name, strlen(conf_file_name) + 1);
+ ctx = uci_alloc_context();
+ sct = NULL;
+ uci_set_confdir(ctx, conf_dir_name);
+ if (access(fname, F_OK) != 0) {
+ FILE *fp;
+
+ fp = fopen(fname, "w+");
+ fclose(fp);
+ }
+ err_flg = uci_load(ctx, fname, &pkg);
+ struct uci_element *e;
+ uci_foreach_element(&pkg->sections, e) {
+ tmp_sct = uci_to_section(e);
+ if (strcmp(tmp_sct->type, section_type) == 0) {
+ sct = tmp_sct;
+ break;
+ }
+ }
+ //sct = uci_lookup_section(ctx, pkg, "service");
+ if (sct != NULL) {
+ log_debug("section found\n");
+ }
+ else {
+ log_debug("adding new section\n");
+ err_flg = uci_add_named_section(ctx, pkg, section_type, section_name, &sct);
+ log_debug("err_flg: %d, section name: %s\n", err_flg, sct->e.name);
+ }
+ opt = uci_lookup_option(ctx, sct, key);
+ if (opt != NULL) {
+ struct uci_ptr ptr;
+ memset(&ptr, 0, sizeof(ptr));
+ ptr.package = pkg->e.name;
+ ptr.section = sct->e.name;
+ ptr.option = key;
+
+ if (uci_lookup_ptr(ctx, &ptr, NULL, false) == UCI_OK) {
+ log_debug("trying to change option value\n");
+ ptr.value = strdup(value);
+ uci_set(ctx, &ptr);
+ save = true;
+ }
+ }
+ else {
+ opt = uci_alloc_option(sct, key, value);
+ save = true;
+ }
+ if (save == true) {
+ log_debug("saving config file: %s\n", fname);
+ uci_save(ctx, pkg);
+ }
+ free(fname);
+ ret_val = true;
+ }
+ else {
+ log_error("Could not change config value, out of memory");
+ }
+ }
+ else {
+ log_error("Could not change config value, invalid parameters");
+ }
+ return ret_val;
+}