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303 lines
8.5 KiB
C
303 lines
8.5 KiB
C
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#include <lighttpd/base.h>
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#include <lighttpd/url_parser.h>
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void li_request_init(liRequest *req) {
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req->http_method = LI_HTTP_METHOD_UNSET;
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req->http_method_str = g_string_sized_new(0);
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req->http_version = LI_HTTP_VERSION_UNSET;
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req->uri.raw = g_string_sized_new(0);
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req->uri.raw_path = g_string_sized_new(0);
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req->uri.raw_orig_path = g_string_sized_new(0);
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req->uri.scheme = g_string_sized_new(0);
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req->uri.authority = g_string_sized_new(0);
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req->uri.path = g_string_sized_new(0);
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req->uri.query = g_string_sized_new(0);
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req->uri.host = g_string_sized_new(0);
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req->headers = li_http_headers_new();
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req->content_length = -1;
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}
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void li_request_reset(liRequest *req) {
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req->http_method = LI_HTTP_METHOD_UNSET;
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g_string_truncate(req->http_method_str, 0);
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req->http_version = LI_HTTP_VERSION_UNSET;
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g_string_truncate(req->uri.raw, 0);
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g_string_truncate(req->uri.raw_path, 0);
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g_string_truncate(req->uri.raw_orig_path, 0);
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g_string_truncate(req->uri.scheme, 0);
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g_string_truncate(req->uri.authority, 0);
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g_string_truncate(req->uri.path, 0);
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g_string_truncate(req->uri.query, 0);
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g_string_truncate(req->uri.host, 0);
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li_http_headers_reset(req->headers);
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req->content_length = -1;
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}
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void li_request_clear(liRequest *req) {
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req->http_method = LI_HTTP_METHOD_UNSET;
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g_string_free(req->http_method_str, TRUE);
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req->http_version = LI_HTTP_VERSION_UNSET;
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g_string_free(req->uri.raw, TRUE);
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g_string_free(req->uri.raw_path, TRUE);
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g_string_free(req->uri.raw_orig_path, TRUE);
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g_string_free(req->uri.scheme, TRUE);
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g_string_free(req->uri.authority, TRUE);
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g_string_free(req->uri.path, TRUE);
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g_string_free(req->uri.query, TRUE);
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g_string_free(req->uri.host, TRUE);
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li_http_headers_free(req->headers);
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req->content_length = -1;
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}
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void li_request_copy(liRequest *dest, const liRequest *src) {
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GList *iter;
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dest->http_method = src->http_method;
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li_string_assign_len(dest->http_method_str, GSTR_LEN(src->http_method_str));
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dest->http_version = src->http_version;
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li_string_assign_len(dest->uri.raw, GSTR_LEN(src->uri.raw));
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li_string_assign_len(dest->uri.raw_path, GSTR_LEN(src->uri.raw_path));
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li_string_assign_len(dest->uri.raw_orig_path, GSTR_LEN(src->uri.raw_orig_path));
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li_string_assign_len(dest->uri.scheme, GSTR_LEN(src->uri.scheme));
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li_string_assign_len(dest->uri.authority, GSTR_LEN(src->uri.authority));
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li_string_assign_len(dest->uri.path, GSTR_LEN(src->uri.path));
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li_string_assign_len(dest->uri.query, GSTR_LEN(src->uri.query));
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li_string_assign_len(dest->uri.host, GSTR_LEN(src->uri.host));
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li_http_headers_reset(dest->headers);
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for (iter = g_queue_peek_head_link(&src->headers->entries); iter; iter = g_list_next(iter)) {
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liHttpHeader* header = (liHttpHeader*) iter->data;
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li_http_header_insert(dest->headers, LI_HEADER_KEY_LEN(header), LI_HEADER_VALUE_LEN(header));
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}
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dest->content_length = src->content_length;
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}
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/* closes connection after response */
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static void bad_request(liConnection *con, int status) {
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con->info.keep_alive = FALSE;
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con->mainvr->response.http_status = status;
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}
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static gboolean request_parse_url(liVRequest *vr) {
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liRequest *req = &vr->request;
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g_string_truncate(req->uri.query, 0);
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g_string_truncate(req->uri.path, 0);
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if (!li_parse_raw_url(&req->uri))
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return FALSE;
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/* "*" only allowed for method OPTIONS */
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if (0 == strcmp(req->uri.path->str, "*") && req->http_method != LI_HTTP_METHOD_OPTIONS)
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return FALSE;
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li_url_decode(req->uri.path);
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li_path_simplify(req->uri.path);
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if (0 == req->uri.raw_orig_path->len) {
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g_string_append_len(req->uri.raw_orig_path, GSTR_LEN(req->uri.raw_path)); /* save orig raw uri */
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}
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return TRUE;
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}
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gboolean li_request_validate_header(liConnection *con) {
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liRequest *req = &con->mainvr->request;
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liHttpHeader *hh;
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GList *l;
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if (con->info.is_ssl) {
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g_string_append_len(req->uri.scheme, CONST_STR_LEN("https"));
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} else {
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g_string_append_len(req->uri.scheme, CONST_STR_LEN("http"));
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}
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switch (req->http_version) {
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case LI_HTTP_VERSION_1_0:
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if (!li_http_header_is(req->headers, CONST_STR_LEN("connection"), CONST_STR_LEN("keep-alive")))
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con->info.keep_alive = FALSE;
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break;
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case LI_HTTP_VERSION_1_1:
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if (li_http_header_is(req->headers, CONST_STR_LEN("connection"), CONST_STR_LEN("close")))
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con->info.keep_alive = FALSE;
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break;
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case LI_HTTP_VERSION_UNSET:
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bad_request(con, 505); /* Version not Supported */
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return FALSE;
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}
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if (req->uri.raw->len == 0) {
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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/* get hostname */
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l = li_http_header_find_first(req->headers, CONST_STR_LEN("host"));
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if (NULL != l) {
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if (NULL != li_http_header_find_next(l, CONST_STR_LEN("host"))) {
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/* more than one "host" header */
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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hh = (liHttpHeader*) l->data;
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g_string_append_len(req->uri.authority, LI_HEADER_VALUE_LEN(hh));
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/* check header after we parsed the url, as it may override uri.authority */
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}
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/* Need hostname in HTTP/1.1 */
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if (req->uri.authority->len == 0 && req->http_version == LI_HTTP_VERSION_1_1) {
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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/* may override hostname */
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if (!request_parse_url(con->mainvr)) {
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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if (req->uri.host->len == 0 && req->uri.authority->len != 0) {
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if (!li_parse_hostname(&req->uri)) {
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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}
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/* remove trailing dots from hostname */
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{
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guint i = req->uri.host->len;
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while (i > 0 && req->uri.host->str[i-1] == '.') i--;
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g_string_truncate(req->uri.host, i);
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}
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/* content-length */
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hh = li_http_header_lookup(req->headers, CONST_STR_LEN("content-length"));
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if (hh) {
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const gchar *val = LI_HEADER_VALUE(hh);
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gint64 r;
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char *err;
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r = g_ascii_strtoll(val, &err, 10);
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if (*err != '\0') {
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_VR_DEBUG(con->srv, con->mainvr, "content-length is not a number: %s (Status: 400)", err);
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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/**
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* negative content-length is not supported
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* and is a bad request
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*/
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if (r < 0) {
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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/**
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* check if we had a over- or underrun in the string conversion
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*/
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if (r == G_MININT64 || r == G_MAXINT64) {
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if (errno == ERANGE) {
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bad_request(con, 413); /* Request Entity Too Large */
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return FALSE;
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}
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}
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con->mainvr->request.content_length = r;
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}
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/* Expect: 100-continue */
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l = li_http_header_find_first(req->headers, CONST_STR_LEN("expect"));
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if (l) {
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gboolean expect_100_cont = FALSE;
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for ( ; l ; l = li_http_header_find_next(l, CONST_STR_LEN("expect")) ) {
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hh = (liHttpHeader*) l->data;
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if (0 == g_ascii_strcasecmp( LI_HEADER_VALUE(hh), "100-continue" )) {
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expect_100_cont = TRUE;
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} else {
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/* we only support 100-continue */
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bad_request(con, 417); /* Expectation Failed */
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return FALSE;
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}
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}
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if (expect_100_cont && req->http_version == LI_HTTP_VERSION_1_0) {
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/* only HTTP/1.1 clients can send us this header */
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bad_request(con, 417); /* Expectation Failed */
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return FALSE;
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}
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con->expect_100_cont = expect_100_cont;
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}
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/* TODO: headers:
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* - If-Modified-Since (different duplicate check)
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* - If-None-Match (different duplicate check)
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* - Range (duplicate check)
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*/
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switch(con->mainvr->request.http_method) {
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case LI_HTTP_METHOD_GET:
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case LI_HTTP_METHOD_HEAD:
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/* content-length is forbidden for those */
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if (con->mainvr->request.content_length > 0) {
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VR_ERROR(con->mainvr, "%s", "GET/HEAD with content-length -> 400");
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bad_request(con, 400); /* bad request */
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return FALSE;
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}
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con->mainvr->request.content_length = 0;
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break;
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case LI_HTTP_METHOD_POST:
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/* content-length is required for them */
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if (con->mainvr->request.content_length == -1) {
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/* content-length is missing */
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VR_ERROR(con->mainvr, "%s", "POST-request, but content-length missing -> 411");
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bad_request(con, 411); /* Length Required */
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return FALSE;
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}
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break;
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default:
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if (con->mainvr->request.content_length == -1)
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con->mainvr->request.content_length = 0;
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/* the may have a content-length */
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break;
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}
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return TRUE;
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}
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void li_physical_init(liPhysical *phys) {
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phys->path = g_string_sized_new(127);
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phys->doc_root = g_string_sized_new(63);
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phys->pathinfo = g_string_sized_new(63);
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}
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void li_physical_reset(liPhysical *phys) {
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g_string_truncate(phys->path, 0);
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g_string_truncate(phys->doc_root, 0);
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g_string_truncate(phys->pathinfo, 0);
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}
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void li_physical_clear(liPhysical *phys) {
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g_string_free(phys->path, TRUE);
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g_string_free(phys->doc_root, TRUE);
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g_string_free(phys->pathinfo, TRUE);
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}
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