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Fix enduser_setup default POST request (#2852)

This commit is contained in:
Gregor Hartmann 2019-08-01 21:31:18 +02:00 committed by Marcel Stör
parent 49ac968bde
commit 0659e5529e
1 changed files with 36 additions and 26 deletions
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62
app/modules/enduser_setup.c
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@ -397,18 +397,25 @@ static err_t close_once_sent (void *arg, struct tcp_pcb *pcb, u16_t len)
/* ------------------------------------------------------------------------- */
/**
* Search String
* Get length of param value
*
* This is being called with a fragment of the parameters passed in the
* URL for GET requests or part of the body of a POST request.
* The string will look like one of these
* "SecretPassword HTTP/1.1"
* "SecretPassword&wifi_ssid=..."
* "SecretPassword"
* The string is searched for the first occurence of deliemiter '&' or ' '.
* If found return the length up to that position.
* If not found return the length of the string.
*
* Search string for first occurence of any char in srch_str.
*
* @return -1 if no occurence of char was found.
*/
static int enduser_setup_srch_str(const char *str, const char *srch_str)
static int enduser_setup_get_lenth_of_param_value(const char *str)
{
char *found = strpbrk (str, srch_str);
char *found = strpbrk (str, "& ");
if (!found)
{
return -1;
return strlen(str);
}
else
{
@ -469,6 +476,11 @@ static int enduser_setup_http_load_payload(void)
{
ENDUSER_SETUP_DEBUG("Unable to load file enduser_setup.html, loading default HTML...");
if (f)
{
vfs_close(f);
}
sprintf(cl_hdr, http_header_content_len_fmt, sizeof(enduser_setup_html_default));
cl_len = strlen(cl_hdr);
int html_len = LITLEN(enduser_setup_html_default);
@ -801,8 +813,8 @@ static int enduser_setup_http_handle_credentials(char *data, unsigned short data
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="));
char *name_str = strstr(data, "wifi_ssid=");
char *pwd_str = strstr(data, "wifi_password=");
if (name_str == NULL || pwd_str == NULL)
{
ENDUSER_SETUP_DEBUG("Password or SSID string not found");
@ -814,13 +826,8 @@ static int enduser_setup_http_handle_credentials(char *data, unsigned short data
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;
}
int name_str_len = enduser_setup_get_lenth_of_param_value(name_str_start);
int pwd_str_len = enduser_setup_get_lenth_of_param_value(pwd_str_start);
struct station_config *cnf = luaM_malloc(lua_getstate(), sizeof(struct station_config));
@ -1111,22 +1118,25 @@ static void enduser_setup_handle_OPTIONS (struct tcp_pcb *http_client, char *dat
}
static err_t enduser_setup_handle_POST(struct tcp_pcb *http_client, char* data, size_t data_len)
static void enduser_setup_handle_POST(struct tcp_pcb *http_client, char* data, size_t data_len)
{
ENDUSER_SETUP_DEBUG("Handling POST");
if (strncmp(data + 5, "/setwifi ", 9) == 0) // User clicked the submit button
{
switch (enduser_setup_http_handle_credentials(data, data_len))
char* body=strstr(data, "\r\n\r\n");
char *content_length_str = strstr(data, "Content-Length: ");
if( body == NULL || content_length_str == NULL)
{
enduser_setup_http_serve_header(http_client, http_header_400, LITLEN(http_header_400));
return;
}
int bodylength = atoi(content_length_str + 16);
body += 4; // length of the double CRLF found above
switch (enduser_setup_http_handle_credentials(body, bodylength))
{
case 0: {
// all went fine, extract all the form data into a file
char* body=strstr(data, "\r\n\r\n");
char *content_length_str = strstr(data, "Content-Length: ");
if( body != NULL && content_length_str != NULL){
int bodylength = atoi(content_length_str + 16);
body += 4; // length of the double CRLF found above
enduser_setup_write_file_with_extra_configuration_data(body, bodylength);
}
// redirect user to the base page with the trying flag
enduser_setup_http_serve_header(http_client, http_header_302_trying, LITLEN(http_header_302_trying));
break;
@ -1135,10 +1145,10 @@ static err_t enduser_setup_handle_POST(struct tcp_pcb *http_client, char* data,
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);
ENDUSER_SETUP_ERROR_VOID("http_recvcb failed. Failed to handle wifi credentials.", ENDUSER_SETUP_ERR_UNKOWN_ERROR, ENDUSER_SETUP_ERR_NONFATAL);
break;
}
}
}
}