} \
while (0)
+static inline int
+http_state_is_tx_valid (http_conn_t *hc)
+{
+ http_state_t state = hc->http_state;
+ return (state == HTTP_STATE_APP_IO_MORE_DATA ||
+ state == HTTP_STATE_CLIENT_IO_MORE_DATA ||
+ state == HTTP_STATE_WAIT_APP_REPLY ||
+ state == HTTP_STATE_WAIT_APP_METHOD);
+}
+
static inline http_worker_t *
http_worker_get (u32 thread_index)
{
static const char *http_request_template = "GET %s HTTP/1.1\r\n"
"User-Agent: %s\r\n"
- "Accept: */*\r\n";
+ "Accept: */*\r\n\r\n";
static u32
http_send_data (http_conn_t *hc, u8 *data, u32 length, u32 offset)
return 0;
}
-static int
-v_find_index (u8 *vec, u32 offset, char *str)
+/**
+ * @brief Find the first occurrence of the string in the vector.
+ *
+ * @param vec The vector to be scanned.
+ * @param offset Search offset in the vector.
+ * @param num Maximum number of characters to be searched if non-zero.
+ * @param str The string to be searched.
+ *
+ * @return @c -1 if the string is not found within the vector; index otherwise.
+ */
+static inline int
+v_find_index (u8 *vec, u32 offset, u32 num, char *str)
{
int start_index = offset;
u32 slen = (u32) strnlen_s_inline (str, 16);
if (vlen <= slen)
return -1;
- for (; start_index < (vlen - slen); start_index++)
+ int end_index = vlen - slen;
+ if (num)
+ {
+ if (num < slen)
+ return -1;
+ end_index = clib_min (end_index, offset + num - slen);
+ }
+
+ for (; start_index <= end_index; start_index++)
{
if (!memcmp (vec + start_index, str, slen))
return start_index;
return -1;
}
+static void
+http_identify_optional_query (http_conn_t *hc)
+{
+ u32 pos = vec_search (hc->rx_buf, '?');
+ if (~0 != pos)
+ {
+ hc->target_query_offset = pos + 1;
+ hc->target_query_len =
+ hc->target_path_offset + hc->target_path_len - hc->target_query_offset;
+ hc->target_path_len = hc->target_path_len - hc->target_query_len - 1;
+ }
+}
+
+static int
+http_get_target_form (http_conn_t *hc)
+{
+ int i;
+
+ /* "*" */
+ if ((hc->rx_buf[hc->target_path_offset] == '*') &&
+ (hc->target_path_len == 1))
+ {
+ hc->target_form = HTTP_TARGET_ASTERISK_FORM;
+ return 0;
+ }
+
+ /* 1*( "/" segment ) [ "?" query ] */
+ if (hc->rx_buf[hc->target_path_offset] == '/')
+ {
+ /* drop leading slash */
+ hc->target_path_len--;
+ hc->target_path_offset++;
+ hc->target_form = HTTP_TARGET_ORIGIN_FORM;
+ http_identify_optional_query (hc);
+ return 0;
+ }
+
+ /* scheme "://" host [ ":" port ] *( "/" segment ) [ "?" query ] */
+ i = v_find_index (hc->rx_buf, hc->target_path_offset, hc->target_path_len,
+ "://");
+ if (i > 0)
+ {
+ hc->target_form = HTTP_TARGET_ABSOLUTE_FORM;
+ http_identify_optional_query (hc);
+ return 0;
+ }
+
+ /* host ":" port */
+ for (i = hc->target_path_offset;
+ i < (hc->target_path_offset + hc->target_path_len); i++)
+ {
+ if ((hc->rx_buf[i] == ':') && (isdigit (hc->rx_buf[i + 1])))
+ {
+ hc->target_form = HTTP_TARGET_AUTHORITY_FORM;
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+static int
+http_parse_request_line (http_conn_t *hc, http_status_code_t *ec)
+{
+ int i, target_len;
+ u32 next_line_offset;
+
+ /* request-line = method SP request-target SP HTTP-version CRLF */
+ i = v_find_index (hc->rx_buf, 0, 0, "\r\n");
+ if (i < 0)
+ {
+ clib_warning ("request line incomplete");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ HTTP_DBG (0, "request line length: %d", i);
+ next_line_offset = i + 2;
+
+ /* there should be at least one more CRLF */
+ if (vec_len (hc->rx_buf) < (next_line_offset + 2))
+ {
+ clib_warning ("malformed message, too short");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+
+ /* parse method */
+ if ((i = v_find_index (hc->rx_buf, 0, next_line_offset, "GET ")) >= 0)
+ {
+ HTTP_DBG (0, "GET method");
+ hc->method = HTTP_REQ_GET;
+ hc->target_path_offset = i + 4;
+ }
+ else if ((i = v_find_index (hc->rx_buf, 0, next_line_offset, "POST ")) >= 0)
+ {
+ HTTP_DBG (0, "POST method");
+ hc->method = HTTP_REQ_POST;
+ hc->target_path_offset = i + 5;
+ }
+ else
+ {
+ clib_warning ("method not implemented: %8v", hc->rx_buf);
+ *ec = HTTP_STATUS_NOT_IMPLEMENTED;
+ return -1;
+ }
+
+ /* find version */
+ i = v_find_index (hc->rx_buf, next_line_offset - 11, 11, " HTTP/");
+ if (i < 0)
+ {
+ clib_warning ("HTTP version not present");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ /* verify major version */
+ if (isdigit (hc->rx_buf[i + 6]))
+ {
+ if (hc->rx_buf[i + 6] != '1')
+ {
+ clib_warning ("HTTP major version '%c' not supported",
+ hc->rx_buf[i + 6]);
+ *ec = HTTP_STATUS_HTTP_VERSION_NOT_SUPPORTED;
+ return -1;
+ }
+ }
+ else
+ {
+ clib_warning ("HTTP major version '%c' is not digit", hc->rx_buf[i + 6]);
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+
+ /* parse request-target */
+ target_len = i - hc->target_path_offset;
+ if (target_len < 1)
+ {
+ clib_warning ("request-target not present");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ hc->target_path_len = target_len;
+ hc->target_query_offset = 0;
+ hc->target_query_len = 0;
+ if (http_get_target_form (hc))
+ {
+ clib_warning ("invalid target");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ HTTP_DBG (0, "request-target path length: %u", hc->target_path_len);
+ HTTP_DBG (0, "request-target path offset: %u", hc->target_path_offset);
+ HTTP_DBG (0, "request-target query length: %u", hc->target_query_len);
+ HTTP_DBG (0, "request-target query offset: %u", hc->target_query_offset);
+
+ /* set buffer offset to nex line start */
+ hc->rx_buf_offset = next_line_offset;
+
+ return 0;
+}
+
+static int
+http_identify_headers (http_conn_t *hc, http_status_code_t *ec)
+{
+ int i;
+
+ /* check if we have any header */
+ if ((hc->rx_buf[hc->rx_buf_offset] == '\r') &&
+ (hc->rx_buf[hc->rx_buf_offset + 1] == '\n'))
+ {
+ /* just another CRLF -> no headers */
+ HTTP_DBG (0, "no headers");
+ hc->headers_len = 0;
+ return 0;
+ }
+
+ /* find empty line indicating end of header section */
+ i = v_find_index (hc->rx_buf, hc->rx_buf_offset, 0, "\r\n\r\n");
+ if (i < 0)
+ {
+ clib_warning ("cannot find header section end");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ hc->headers_offset = hc->rx_buf_offset;
+ hc->headers_len = i - hc->rx_buf_offset + 2;
+ HTTP_DBG (0, "headers length: %u", hc->headers_len);
+ HTTP_DBG (0, "headers offset: %u", hc->headers_offset);
+
+ return 0;
+}
+
+static int
+http_identify_message_body (http_conn_t *hc, http_status_code_t *ec)
+{
+ unformat_input_t input;
+ int i, len;
+ u8 *line;
+
+ hc->body_len = 0;
+
+ if (hc->headers_len == 0)
+ {
+ HTTP_DBG (0, "no header, no message-body");
+ return 0;
+ }
+
+ /* TODO check for chunked transfer coding */
+
+ /* try to find Content-Length header */
+ i = v_find_index (hc->rx_buf, hc->headers_offset, hc->headers_len,
+ "Content-Length:");
+ if (i < 0)
+ {
+ HTTP_DBG (0, "Content-Length header not present, no message-body");
+ return 0;
+ }
+ hc->rx_buf_offset = i + 15;
+
+ i = v_find_index (hc->rx_buf, hc->rx_buf_offset, hc->headers_len, "\r\n");
+ if (i < 0)
+ {
+ clib_warning ("end of line missing");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ len = i - hc->rx_buf_offset;
+ if (len < 1)
+ {
+ clib_warning ("invalid header, content length value missing");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+
+ line = vec_new (u8, len);
+ clib_memcpy (line, hc->rx_buf + hc->rx_buf_offset, len);
+ HTTP_DBG (0, "%v", line);
+
+ unformat_init_vector (&input, line);
+ if (!unformat (&input, "%lu", &hc->body_len))
+ {
+ clib_warning ("failed to unformat content length value");
+ *ec = HTTP_STATUS_BAD_REQUEST;
+ return -1;
+ }
+ unformat_free (&input);
+
+ hc->body_offset = hc->headers_offset + hc->headers_len + 2;
+ HTTP_DBG (0, "body length: %u", hc->body_len);
+ HTTP_DBG (0, "body offset: %u", hc->body_offset);
+
+ return 0;
+}
+
static int
http_parse_header (http_conn_t *hc, int *content_length)
{
int i, len;
u8 *line;
- i = v_find_index (hc->rx_buf, hc->rx_buf_offset, CONTENT_LEN_STR);
+ i = v_find_index (hc->rx_buf, hc->rx_buf_offset, 0, CONTENT_LEN_STR);
if (i < 0)
{
clib_warning ("cannot find '%s' in the header!", CONTENT_LEN_STR);
hc->rx_buf_offset = i;
- i = v_find_index (hc->rx_buf, hc->rx_buf_offset, "\n");
+ i = v_find_index (hc->rx_buf, hc->rx_buf_offset, 0, "\n");
if (i < 0)
{
clib_warning ("end of line missing; incomplete data");
/* skip rest of the header */
hc->rx_buf_offset += len;
- i = v_find_index (hc->rx_buf, hc->rx_buf_offset, "<html>");
+ i = v_find_index (hc->rx_buf, hc->rx_buf_offset, 0, "<html>");
if (i < 0)
{
clib_warning ("<html> tag not found");
goto error;
}
- if ((i = v_find_index (hc->rx_buf, 0, "200 OK")) >= 0)
+ if ((i = v_find_index (hc->rx_buf, 0, 0, "200 OK")) >= 0)
{
msg.type = HTTP_MSG_REPLY;
msg.content_type = HTTP_CONTENT_TEXT_HTML;
app_worker_t *app_wrk;
http_msg_t msg;
session_t *as;
- int i, rv;
+ int rv;
u32 len;
- u8 *buf;
rv = http_read_message (hc);
if (rv)
return HTTP_SM_STOP;
+ HTTP_DBG (0, "%v", hc->rx_buf);
+
if (vec_len (hc->rx_buf) < 8)
{
ec = HTTP_STATUS_BAD_REQUEST;
goto error;
}
- if ((i = v_find_index (hc->rx_buf, 0, "GET ")) >= 0)
- {
- hc->method = HTTP_REQ_GET;
- hc->rx_buf_offset = i + 5;
+ rv = http_parse_request_line (hc, &ec);
+ if (rv)
+ goto error;
- i = v_find_index (hc->rx_buf, hc->rx_buf_offset, "HTTP");
- if (i < 0)
- {
- ec = HTTP_STATUS_BAD_REQUEST;
- goto error;
- }
+ rv = http_identify_headers (hc, &ec);
+ if (rv)
+ goto error;
- HTTP_DBG (0, "GET method %v", hc->rx_buf);
- len = i - hc->rx_buf_offset - 1;
- }
- else if ((i = v_find_index (hc->rx_buf, 0, "POST ")) >= 0)
- {
- hc->method = HTTP_REQ_POST;
- hc->rx_buf_offset = i + 6;
- len = vec_len (hc->rx_buf) - hc->rx_buf_offset - 1;
- HTTP_DBG (0, "POST method %v", hc->rx_buf);
- }
- else
- {
- HTTP_DBG (0, "Unknown http method %v", hc->rx_buf);
- ec = HTTP_STATUS_METHOD_NOT_ALLOWED;
- goto error;
- }
+ rv = http_identify_message_body (hc, &ec);
+ if (rv)
+ goto error;
- buf = &hc->rx_buf[hc->rx_buf_offset];
+ len = vec_len (hc->rx_buf);
msg.type = HTTP_MSG_REQUEST;
msg.method_type = hc->method;
msg.content_type = HTTP_CONTENT_TEXT_HTML;
msg.data.type = HTTP_MSG_DATA_INLINE;
msg.data.len = len;
-
- svm_fifo_seg_t segs[2] = { { (u8 *) &msg, sizeof (msg) }, { buf, len } };
+ msg.data.target_form = hc->target_form;
+ msg.data.target_path_offset = hc->target_path_offset;
+ msg.data.target_path_len = hc->target_path_len;
+ msg.data.target_query_offset = hc->target_query_offset;
+ msg.data.target_query_len = hc->target_query_len;
+ msg.data.headers_offset = hc->headers_offset;
+ msg.data.headers_len = hc->headers_len;
+ msg.data.body_offset = hc->body_offset;
+ msg.data.body_len = hc->body_len;
+
+ svm_fifo_seg_t segs[2] = { { (u8 *) &msg, sizeof (msg) },
+ { hc->rx_buf, len } };
as = session_get_from_handle (hc->h_pa_session_handle);
rv = svm_fifo_enqueue_segments (as->rx_fifo, segs, 2, 0 /* allow partial */);
case HTTP_STATUS_METHOD_NOT_ALLOWED:
case HTTP_STATUS_BAD_REQUEST:
case HTTP_STATUS_INTERNAL_ERROR:
+ case HTTP_STATUS_FORBIDDEN:
case HTTP_STATUS_OK:
header =
format (0, http_response_template, http_status_code_str[msg.code],
Code Review / vpp.git / blobdiff