New module to save data form to text file
Posted: Mon Mar 05, 2018 4:23 pmI am trying to modify existing enduser_setup module to
1) add more fields instead of standard wifi name and password fields
2) save the answer given to text file
I understand how to modify html file, but I am not familiar with C, so I can not understand how to either pass data received to Lua or to save it directly to text file (considering it may contain utf-8 data).
Would appreciate your help here.
1) add more fields instead of standard wifi name and password fields
2) save the answer given to text file
I understand how to modify html file, but I am not familiar with C, so I can not understand how to either pass data received to Lua or to save it directly to text file (considering it may contain utf-8 data).
Would appreciate your help here.
Code: Select all
...
else if (c_strncmp(data + 4, "/setwifi?", 9) == 0)
{
switch (enduser_setup_http_handle_credentials(data, data_len))
{
case 0:
enduser_setup_serve_status_as_json(http_client);
break;
case 1:
enduser_setup_http_serve_header(http_client, http_header_400, LITLEN(http_header_400));
break;
default:
ENDUSER_SETUP_ERROR("http_recvcb failed. Failed to handle wifi credentials.", ENDUSER_SETUP_ERR_UNKOWN_ERROR, ENDUSER_SETUP_ERR_NONFATAL);
break;
}
}
...
static int enduser_setup_http_handle_credentials(char *data, unsigned short data_len)
{
ENDUSER_SETUP_DEBUG("enduser_setup_http_handle_credentials");
state->success = 0;
state->lastStationStatus = 0;
char *name_str = (char *) ((uint32_t)strstr(&(data[6]), "wifi_ssid="));
char *pwd_str = (char *) ((uint32_t)strstr(&(data[6]), "wifi_password="));
if (name_str == NULL || pwd_str == NULL)
{
ENDUSER_SETUP_DEBUG("Password or SSID string not found");
return 1;
}
int name_field_len = LITLEN("wifi_ssid=");
int pwd_field_len = LITLEN("wifi_password=");
char *name_str_start = name_str + name_field_len;
char *pwd_str_start = pwd_str + pwd_field_len;
int name_str_len = enduser_setup_srch_str(name_str_start, "& ");
int pwd_str_len = enduser_setup_srch_str(pwd_str_start, "& ");
if (name_str_len == -1 || pwd_str_len == -1)
{
ENDUSER_SETUP_DEBUG("Password or SSID HTTP paramter divider not found");
return 1;
}
struct station_config *cnf = luaM_malloc(lua_getstate(), sizeof(struct station_config));
c_memset(cnf, 0, sizeof(struct station_config));
int err;
err = enduser_setup_http_urldecode(cnf->ssid, name_str_start, name_str_len, sizeof(cnf->ssid));
err |= enduser_setup_http_urldecode(cnf->password, pwd_str_start, pwd_str_len, sizeof(cnf->password));
if (err != 0 || c_strlen(cnf->ssid) == 0)
{
ENDUSER_SETUP_DEBUG("Unable to decode HTTP parameter to valid password or SSID");
return 1;
}
ENDUSER_SETUP_DEBUG("");
ENDUSER_SETUP_DEBUG("WiFi Credentials Stored");
ENDUSER_SETUP_DEBUG("-----------------------");
ENDUSER_SETUP_DEBUG("name: ");
ENDUSER_SETUP_DEBUG(cnf->ssid);
ENDUSER_SETUP_DEBUG("pass: ");
ENDUSER_SETUP_DEBUG(cnf->password);
ENDUSER_SETUP_DEBUG("-----------------------");
ENDUSER_SETUP_DEBUG("");
task_post_medium(do_station_cfg_handle, (task_param_t) cnf);
return 0;
}