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#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <pwd.h>
#include <stdlib.h>
#include "config.h"
struct config_item ci[] = {
{ "device", CFG_TYPE_STR, offsetof(struct config, device) },
{ "repeat", CFG_TYPE_BOOL, offsetof(struct config, repeat) },
{ "show_shifted", CFG_TYPE_BOOL,
offsetof(struct config, show_shifted) },
{ "time", CFG_TYPE_BOOL, offsetof(struct config, time) }
};
void fix_config_file_owner(const char *config_path)
{
char *sudo_uid_str = getenv("SUDO_UID");
char *sudo_gid_str = getenv("SUDO_GID");
if (sudo_uid_str && sudo_gid_str) {
uid_t original_uid = atoi(sudo_uid_str);
gid_t original_gid = atoi(sudo_gid_str);
chown(config_path, original_uid, original_gid);
}
}
struct config *prepare_config_file()
{
struct config *cfg = malloc(sizeof(struct config));
if (!cfg) {
return NULL;
}
char *sudo_user = getenv("SUDO_USER");
cfg->home = malloc(PATH_MAX);
if (!cfg->home) {
return NULL;
}
snprintf(cfg->home, PATH_MAX, "/home/%s", sudo_user);
cfg->config_file_path = malloc(strlen(cfg->home) + strlen("/.klrc"));
snprintf(cfg->config_file_path, PATH_MAX, "%s/.klrc", cfg->home);
if (access(cfg->config_file_path, F_OK) == -1) {
FILE *fp = fopen(cfg->config_file_path, "a");
if (!fp) {
return NULL;
}
fputs(CFG_FILE_COMMENT, fp);
printf("Config file was generated: %s\n",
cfg->config_file_path);
printf("Warning: There is no device which is defined in config, see README for details.\n");
fix_config_file_owner(cfg->config_file_path);
printf("%s\n", cfg->config_file_path);
fclose(fp);
}
return cfg;
}
void cmp_str(char** cfg, const char* val) {
}
void parse_bool(const char* val, bool* member_ptr) {
if (strcmp(val, "true") == 0) {
*member_ptr = true;
} else {
*member_ptr = false;
}
}
void parse_str(const char* val, char* member_ptr, size_t max_len) {
strncpy(member_ptr, val, max_len - 1);
member_ptr[max_len - 1] = '\0';
}
struct config *parese_config(struct config *cfg){
if (!cfg) {
return NULL;
}
FILE* fp = fopen(cfg->config_file_path, "r");
if (!fp) {
return NULL;
}
int line_count = 0;
char line[128];
char key[128] = "";
char val[128] = "";
while (fgets(line, sizeof(line), fp)) {
line_count++;
if (line[0] == '#' || line[0] == '\n' || line[0] == '\r')
continue;
int count = sscanf(line, "%s = %s", key, val);
if (count < 2) {
fprintf(stderr, "%s:%d: Invalid config\n", cfg->config_file_path, line_count);
fclose(fp);
return NULL;
}
for (int i = 0; i < CI_SIZE; i++) {
if (strcmp(key, ci[i].key) == 0) {
if (ci[i].type == CFG_TYPE_BOOL) {
parse_bool(val,(bool*)((char*)cfg + ci[i].offset));
}
if (ci[i].type == CFG_TYPE_STR) {
printf("key:%s\nval:%s\n", key, val);
parse_str(val, (char*)cfg + ci[i].offset, sizeof(cfg->device));
}
break;
}
}
}
fclose(fp);
return cfg;
}
/* struct config *parese_config(struct config *cfg) */
/* { */
/* if (!cfg) { */
/*
/* } */
/* FILE *fp = fopen(cfg->config_file_path, "r"); */
/* if (!fp) { */
/* return NULL; */
/* } */
/* int line_count = 0; */
/* char line[128]; */
/* char key[64] = { 0 }; */
/* char val[64] = { 0 }; */
/* while (fgets(line, sizeof(line), fp)) { */
/* line_count++; */
/* /\* Skip comment and blank lines *\/ */
/* if (line[0] == '#' || line[0] == '\n' || line[0] == '\r') { */
/* continue; */
/* } */
/* int count = sscanf(line, "%s = %s", key, val); */
/* if (count != 2) { */
/* printf("Error at %s:%d\n invalid token: %s", */
/* cfg->config_file_path, line_count, line); */
/* return NULL; */
/* } */
/* if (CFG_COMPLETE(key, "device")) { */
/* strncpy(cfg->device, val, sizeof(cfg->device) - 1); */
/* cfg->device[sizeof(cfg) - 1] = '\0'; */
/* } else if (CFG_COMPLETE(key, "time")) { */
/* if (CFG_COMPLETE(val, "true")) { */
/* cfg->time = true; */
/* } else { */
/* cfg->time = false; */
/* } */
/* } else if (CFG_COMPLETE(key, "key_counter")) { */
/* if (CFG_COMPLETE(val, "true")) { */
/* cfg->keys_counter = true; */
/* } else { */
/* cfg->keys_counter = false; */
/* } */
/* } else if (CFG_COMPLETE(key, "repeat")) { */
/* if (CFG_COMPLETE(val, "true")) { */
/* cfg->repeat = true; */
/* } else { */
/* cfg->repeat = false; */
/* } */
/* } */
/* } */
/* fclose(fp); */
/* return cfg; */
/* } */
struct config *config_init()
{
struct config *cfg = prepare_config_file();
if (!cfg) {
return NULL;
}
if (parese_config(cfg) == NULL) {
return NULL;
}
return cfg;
}
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