avs_url_t *avs_url_parse(const char *raw_url) {
// In data, we store all the components from raw_url;
// The input url, in its fullest possible form, looks like this:
//
// proto://user:password@hostname:port/path\0
//
// The output data will look like this:
//
// proto\0user\0password\0hostname\0port\0/path\0
//
// A copy of the original string would require strlen(raw_url)+1 bytes.
// Then:
// - we replace "://" with a single nullbyte : -2 bytes
// - we replace ":" before password with nullbyte : +-0 bytes
// - we replace "@" before hostname with nullbyte : +-0 bytes
// - we replace ":" before port with nullbyte : +-0 bytes
// - we add a nullbyte before path's "/" : +1 byte
// - we add a "/" in path if it's empty or query string only: +1 byte
// -----------
// TOTAL DIFFERENCE IN REQUIRED SIZE: 0 bytes
//
// Thus, we know that we need out->data to be strlen(raw_url)+1 bytes long.
size_t data_length = strlen(raw_url) + 1;
avs_url_t *out =
(avs_url_t *) avs_calloc(1, offsetof(avs_url_t, data) + data_length);
if (!out) {
LOG(ERROR, "out of memory");
return NULL;
}
size_t data_out_ptr = 0;
if (url_parse_protocol(&raw_url, &data_out_ptr, data_length, out)
|| url_parse_credentials(&raw_url,
&data_out_ptr, data_length, out)
|| url_parse_host(&raw_url, &data_out_ptr, data_length, out)
|| url_parse_port(&raw_url, &data_out_ptr, data_length, out)
|| url_parse_path(&raw_url, &data_out_ptr, data_length, out)
|| url_parsed(raw_url)) {
avs_free(out);
return NULL;
}
return out;
}
/**
* Parses first line of request
*/
uint8_t* ICACHE_FLASH_ATTR http_request_parse_method_line( http_request_object_type* request, uint8_t* data )
{
uint8_t* w, v, *end, ev;
char hpost[ 5 ] = "POST", hget[ 4 ] = "GET";
ev = *( end = get_line_ending( data ));
( *end ) = '\0';
request->method = HTTP_METHOD_NONE;
data = skip_whitespace( data );
v = *( w = skip_to_whitespace( data ) );
( *w ) = '\0';
if( strcmp( hget, ( char* ) data ) == 0 ) request->method = HTTP_METHOD_GET;
if( strcmp( hpost, ( char* ) data ) == 0 ) request->method = HTTP_METHOD_POST;
( *w ) = v;
data = skip_whitespace( w );
v = *( w = skip_to_whitespace( data ) );
( *w ) = '\0';
url_parse_path( request->location, data );
( *w ) = v;
( *end ) = ev;
return skip_line_ending( end );
}
