std::string get_scheme(TextCursor cursor)
{
int scheme_length;
TextCursor scheme_cursor(parse_scheme(cursor));
scheme_length = scheme_cursor.get_offset() - cursor.get_offset();
char scheme[scheme_length + 1];
cursor.gets(scheme_length, scheme);
return scheme;
}
/************************************************************************
* Function : parse_uri
*
* Parameters :
* char * in ; character string containing uri information to be
* parsed
* int max ; maximum limit on the number of characters
* uri_type * out ; out parameter which will have the parsed uri
* information
*
* Description : parses a uri as defined in http://www.ietf.org/rfc/
* rfc2396.txt (RFC explaining URIs)
* Handles absolute, relative, and opaque uris. Parses into the
* following pieces: scheme, hostport, pathquery, fragment (path and
* query are treated as one token)
* Caller should check for the pieces they require.
*
* Return : int ;
*
* Note :
************************************************************************/
int
parse_uri( const char *in,
int max,
uri_type * out )
{
int begin_path = 0;
int begin_hostport = 0;
int begin_fragment = 0;
if( ( begin_hostport = parse_scheme( in, max, &out->scheme ) ) ) {
out->type = ABSOLUTE;
out->path_type = OPAQUE_PART;
begin_hostport++;
} else {
out->type = RELATIVE;
out->path_type = REL_PATH;
}
if( ( ( begin_hostport + 1 ) < max ) && ( in[begin_hostport] == '/' )
&& ( in[begin_hostport + 1] == '/' ) ) {
begin_hostport += 2;
if( ( begin_path = parse_hostport( &in[begin_hostport],
max - begin_hostport,
&out->hostport ) ) >= 0 ) {
begin_path += begin_hostport;
} else
return begin_path;
} else {
out->hostport.IPv4address.sin_port = 0;
out->hostport.IPv4address.sin_addr.s_addr = 0;
out->hostport.text.size = 0;
out->hostport.text.buff = 0;
begin_path = begin_hostport;
}
begin_fragment =
parse_uric( &in[begin_path], max - begin_path,
&out->pathquery ) + begin_path;
if( ( out->pathquery.size ) && ( out->pathquery.buff[0] == '/' ) ) {
out->path_type = ABS_PATH;
}
if( ( begin_fragment < max ) && ( in[begin_fragment] == '#' ) ) {
begin_fragment++;
parse_uric( &in[begin_fragment], max - begin_fragment,
&out->fragment );
} else {
out->fragment.buff = NULL;
out->fragment.size = 0;
}
return HTTP_SUCCESS;
}
int parse_uri(const char *in, size_t max, uri_type *out)
{
int begin_path = 0;
size_t begin_hostport = (size_t)0;
size_t begin_fragment = (size_t)0;
unsigned short int defaultPort = 80;
begin_hostport = parse_scheme(in, max, &out->scheme);
if (begin_hostport) {
out->type = ABSOLUTE;
out->path_type = OPAQUE_PART;
begin_hostport++;
} else {
out->type = RELATIVE;
out->path_type = REL_PATH;
}
if (begin_hostport + (size_t)1 < max &&
in[begin_hostport] == '/' &&
in[begin_hostport + (size_t)1] == '/') {
begin_hostport += (size_t)2;
if (token_string_casecmp(&out->scheme, "https") == 0) {
defaultPort = 443;
}
begin_path = parse_hostport(&in[begin_hostport],
defaultPort,
&out->hostport);
if (begin_path >= 0) {
begin_path += (int)begin_hostport;
} else
return begin_path;
} else {
memset(&out->hostport, 0, sizeof(out->hostport));
begin_path = (int)begin_hostport;
}
begin_fragment = parse_uric(&in[begin_path],
max - (size_t)begin_path,
&out->pathquery) + (size_t)begin_path;
if (out->pathquery.size && out->pathquery.buff[0] == '/') {
out->path_type = ABS_PATH;
}
if (begin_fragment < max && in[begin_fragment] == '#') {
begin_fragment++;
parse_uric(&in[begin_fragment], max - begin_fragment,
&out->fragment);
} else {
out->fragment.buff = NULL;
out->fragment.size = (size_t)0;
}
return HTTP_SUCCESS;
}
parsed_url* parse_url( const char* url, void* usermem, size_t mem_size )
{
void* mem = usermem;
if( mem == 0x0 )
{
mem_size = parse_url_calc_mem_usage( url );
mem = malloc( mem_size );
}
parse_url_ctx ctx = { mem, mem_size, mem_size };
parsed_url* out = (parsed_url*)alloc_mem( &ctx, sizeof( parsed_url ) );
URL_PARSE_FAIL_IF( out == 0x0 );
url = parse_scheme( url, &ctx, out ); URL_PARSE_FAIL_IF( url == 0x0 );
url = parse_user_pass( url, &ctx, out ); URL_PARSE_FAIL_IF( url == 0x0 );
url = parse_host_port( url, &ctx, out ); URL_PARSE_FAIL_IF( url == 0x0 );
return out;
}
uri_t* parse_uri(char* uri_string, int len) {
uri_t* uri = NULL;
char* tmp_uri = NULL;
char* uri_pointer = NULL;
if(!(tmp_uri = (char*)calloc((strlen(uri_string) + 1), sizeof(char)))) {
printf("Could not alloc memory for tmp (uri string)!\n");
return NULL;
}
memcpy(tmp_uri, uri_string, strlen(uri_string));
if(!(uri = (uri_t*)calloc(1, sizeof(uri_t)))) {
printf("Could not alloc memory for uri structure!\n");
free(tmp_uri);
return NULL;
}
uri_pointer = parse_scheme(uri, tmp_uri);
if(strcmp(uri_pointer, uri_string) == 0) {
uri_pointer = parse_path(uri, uri_pointer);
if(uri_pointer != NULL) {
uri_pointer = parse_frag(uri, uri_pointer);
}
}
else {
uri_pointer = parse_authority(uri, uri_pointer);
uri_pointer = parse_path(uri, uri_pointer);
if(uri_pointer != NULL) {
uri_pointer = parse_frag(uri, uri_pointer);
}
}
free(tmp_uri);
return uri;
}
// URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
// ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?
// 12 3 4 5 6 7 8 9
static IteratorT parse(IteratorT begin, IteratorT end, Components & components) {
// (([^:/?#]+):)?
IteratorT scheme_begin = begin;
IteratorT scheme_end = parse_scheme(scheme_begin, end);
if (scheme_end != scheme_begin) {
components.scheme_begin = scheme_begin;
components.scheme_end = scheme_end - 1;
}
IteratorT hierarchy_begin = parse_constant(":", scheme_end, end);
IteratorT hierarchy_end = parse_hierarchy(hierarchy_begin, end, components.hierarchy);
if (hierarchy_end == hierarchy_begin) {
return hierarchy_begin;
}
components.hierarchy_begin = hierarchy_begin;
components.hierarchy_end = hierarchy_end;
IteratorT query_begin = hierarchy_end;
IteratorT query_end = parse_meta("?", query_begin, end);
if (query_end != query_begin) {
components.query_begin = query_begin;
components.query_end = query_end;
}
IteratorT fragment_begin = query_end;
IteratorT fragment_end = parse_meta("#", fragment_begin, end);
if (fragment_end != fragment_begin) {
components.fragment_begin = fragment_begin;
components.fragment_end = fragment_end;
}
components.complete = true;
return fragment_end;
}
//uri = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
TextCursor parse_uri(TextCursor cursor)
{
cursor = parse_scheme(cursor);
if(get_char(cursor) != ':')
throw ParseError();
cursor = parse_hier_part(cursor);
try
{
cursor = parse_query(cursor);
}
catch(ParseError)
{
}
try
{
cursor = parse_fragment(cursor);
}
catch(ParseError)
{
}
return cursor;
}
