FastCGI working buggy

src/fastcgi.h

@@ -1,6 +1,6 @@
 /**
  * Necronda Web Server
- * FastCGI implementation (header file)
+ * FastCGI interface implementation (header file)
  * src/fastcgi.h
  * Lorenz Stechauner, 2020-12-26
  */
@@ -8,4 +8,138 @@
 #ifndef NECRONDA_SERVER_FASTCGI_H
 #define NECRONDA_SERVER_FASTCGI_H
 
+#define FASTCGI_CHUNKED 1
+#define FASTCGI_COMPRESS 2
+
+typedef struct {
+    int socket;
+    unsigned short req_id;
+    char *out_buf;
+    unsigned short out_len;
+    unsigned short out_off;
+} fastcgi_conn;
+
+char *fastcgi_add_param(char *buf, const char *key, const char *value);
+
+int fastcgi_init(fastcgi_conn *conn, unsigned int client_num, unsigned int req_num, const sock *client,
+                 const http_req *req, const http_uri *uri);
+
+int fastcgi_close_stdin(fastcgi_conn *conn);
+
+int fastcgi_header(fastcgi_conn *conn, http_res *res, char *err_msg);
+
+int fastcgi_send(fastcgi_conn *conn, sock *client, int flags);
+
+
+/*
+ * Listening socket file number
+ */
+#define FCGI_LISTENSOCK_FILENO 0
+
+typedef struct {
+    unsigned char version;
+    unsigned char type;
+    unsigned char requestIdB1;
+    unsigned char requestIdB0;
+    unsigned char contentLengthB1;
+    unsigned char contentLengthB0;
+    unsigned char paddingLength;
+    unsigned char reserved;
+} FCGI_Header;
+
+/*
+ * Number of bytes in a FCGI_Header.  Future versions of the protocol
+ * will not reduce this number.
+ */
+#define FCGI_HEADER_LEN  8
+
+/*
+ * Value for version component of FCGI_Header
+ */
+#define FCGI_VERSION_1           1
+
+/*
+ * Values for type component of FCGI_Header
+ */
+#define FCGI_BEGIN_REQUEST       1
+#define FCGI_ABORT_REQUEST       2
+#define FCGI_END_REQUEST         3
+#define FCGI_PARAMS              4
+#define FCGI_STDIN               5
+#define FCGI_STDOUT              6
+#define FCGI_STDERR              7
+#define FCGI_DATA                8
+#define FCGI_GET_VALUES          9
+#define FCGI_GET_VALUES_RESULT  10
+#define FCGI_UNKNOWN_TYPE       11
+#define FCGI_MAXTYPE (FCGI_UNKNOWN_TYPE)
+
+/*
+ * Value for requestId component of FCGI_Header
+ */
+#define FCGI_NULL_REQUEST_ID     0
+
+typedef struct {
+    unsigned char roleB1;
+    unsigned char roleB0;
+    unsigned char flags;
+    unsigned char reserved[5];
+} FCGI_BeginRequestBody;
+
+typedef struct {
+    FCGI_Header header;
+    FCGI_BeginRequestBody body;
+} FCGI_BeginRequestRecord;
+
+/*
+ * Mask for flags component of FCGI_BeginRequestBody
+ */
+#define FCGI_KEEP_CONN  1
+
+/*
+ * Values for role component of FCGI_BeginRequestBody
+ */
+#define FCGI_RESPONDER  1
+#define FCGI_AUTHORIZER 2
+#define FCGI_FILTER     3
+
+typedef struct {
+    unsigned char appStatusB3;
+    unsigned char appStatusB2;
+    unsigned char appStatusB1;
+    unsigned char appStatusB0;
+    unsigned char protocolStatus;
+    unsigned char reserved[3];
+} FCGI_EndRequestBody;
+
+typedef struct {
+    FCGI_Header header;
+    FCGI_EndRequestBody body;
+} FCGI_EndRequestRecord;
+
+/*
+ * Values for protocolStatus component of FCGI_EndRequestBody
+ */
+#define FCGI_REQUEST_COMPLETE 0
+#define FCGI_CANT_MPX_CONN    1
+#define FCGI_OVERLOADED       2
+#define FCGI_UNKNOWN_ROLE     3
+
+/*
+ * Variable names for FCGI_GET_VALUES / FCGI_GET_VALUES_RESULT records
+ */
+#define FCGI_MAX_CONNS  "FCGI_MAX_CONNS"
+#define FCGI_MAX_REQS   "FCGI_MAX_REQS"
+#define FCGI_MPXS_CONNS "FCGI_MPXS_CONNS"
+
+typedef struct {
+    unsigned char type;
+    unsigned char reserved[7];
+} FCGI_UnknownTypeBody;
+
+typedef struct {
+    FCGI_Header header;
+    FCGI_UnknownTypeBody body;
+} FCGI_UnknownTypeRecord;
+
 #endif //NECRONDA_SERVER_FASTCGI_H