Initial commit
This commit is contained in:
Stefan Bühler
commit
418a6844a7
73
CMakeLists.txt
Normal file
73
CMakeLists.txt
Normal file
@ -0,0 +1,73 @@
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CMAKE_MINIMUM_REQUIRED(VERSION 2.6.0 FATAL_ERROR)
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cmake_policy(VERSION 2.6.0)
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INCLUDE(CheckIncludeFiles)
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INCLUDE(CheckLibraryExists)
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INCLUDE(FindPkgConfig)
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MACRO(ADD_TARGET_PROPERTIES _target _name _properties)
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SET(_properties ${ARGV})
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LIST(REMOVE_AT _properties 0)
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LIST(REMOVE_AT _properties 0)
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GET_TARGET_PROPERTY(_old_properties ${_target} ${_name})
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#MESSAGE("adding property to ${_target} ${_name}: ${_properties}")
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IF(NOT _old_properties)
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# in case it's NOTFOUND
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SET(_old_properties)
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ELSE(NOT _old_properties)
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SET(_old_properties "${_old_properties} ")
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ENDIF(NOT _old_properties)
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SET_TARGET_PROPERTIES(${_target} PROPERTIES ${_name} "${_old_properties}${_properties}")
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ENDMACRO(ADD_TARGET_PROPERTIES)
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PROJECT(fcgi-cgi)
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SET(PACKAGE_VERSION 0.1.0)
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IF("${CMAKE_BUILD_TYPE}" STREQUAL "")
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SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel." FORCE)
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ENDIF("${CMAKE_BUILD_TYPE}" STREQUAL "")
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# libev
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CHECK_INCLUDE_FILES(ev.h HAVE_EV_H)
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IF(HAVE_EV_H)
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CHECK_LIBRARY_EXISTS(ev ev_loop "" HAVE_LIBEV)
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IF(HAVE_LIBEV)
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SET(EV_LIBRARIES ev)
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SET(EV_STATIC_LIBRARIES ev;m)
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CHECK_LIBRARY_EXISTS(rt clock_gettime "" NEED_RT)
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IF(NEED_RT)
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SET(EV_STATIC_LIBRARIES ${EV_STATIC_LIBRARIES} rt)
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ENDIF(NEED_RT)
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ELSE(HAVE_LIBEV)
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MESSAGE(FATAL_ERROR "Couldn't find lib ev")
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ENDIF(HAVE_LIBEV)
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ELSE(HAVE_EV_H)
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MESSAGE(FATAL_ERROR "Couldn't find <ev.h>")
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ENDIF(HAVE_EV_H)
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# GLIB 2
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pkg_check_modules (GLIB2 REQUIRED glib-2.0)
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SET(GLIB_INCLUDES ${GLIB2_INCLUDE_DIRS} ${GLIB2_INCLUDE_DIRS}/glib-2.0/ ${GLIB2_INCLUDE_DIRS}/glib-2.0/include/)
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INCLUDE_DIRECTORIES(${GLIB_INCLUDES})
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SET(MAIN_SOURCE fastcgi.c fcgi-cgi.c)
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SET(PACKAGE_NAME ${CMAKE_PROJECT_NAME})
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SET(PACKAGE_VERSION ${PACKAGE_VERSION})
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CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.h.cmake ${CMAKE_BINARY_DIR}/config.h ESCAPE_QUOTES)
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ADD_DEFINITIONS(-DHAVE_CONFIG_H)
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INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
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add_executable(fcgi-cgi ${MAIN_SOURCE})
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ADD_TARGET_PROPERTIES(fcgi-cgi COMPILE_FLAGS "-std=gnu99 -Wall -g -Wshadow -W -pedantic -fPIC -D_GNU_SOURCE")
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# libev
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TARGET_LINK_LIBRARIES(fcgi-cgi "${EV_LIBRARIES}")
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# GLIB 2
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ADD_TARGET_PROPERTIES(fcgi-cgi LINK_FLAGS "${GLIB2_LDFLAGS}")
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ADD_TARGET_PROPERTIES(fcgi-cgi COMPILE_FLAGS "${GLIB2_CFLAGS_OTHER}")
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INSTALL(TARGETS fcgi-cgi DESTINATION bin)
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22
COPYING
Normal file
22
COPYING
Normal file
@ -0,0 +1,22 @@
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The MIT License
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Copyright (c) 2009 Stefan Bühler
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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2
README
Normal file
2
README
Normal file
@ -0,0 +1,2 @@
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fcgi-cgi is a FastCGI application to run cgi applications.
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6
config.h.cmake
Normal file
6
config.h.cmake
Normal file
@ -0,0 +1,6 @@
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/*
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CMake autogenerated config.h file. Do not edit!
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*/
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#define PACKAGE_NAME "${PACKAGE_NAME}"
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#define PACKAGE_VERSION "${PACKAGE_VERSION}"
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740
fastcgi.c
Normal file
740
fastcgi.c
Normal file
@ -0,0 +1,740 @@
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "fastcgi.h"
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#include <arpa/inet.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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/* some util functions */
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#define GSTR_LEN(x) (x) ? (x)->str : "", (x) ? (x)->len : 0
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#define UNUSED(x) ((void)(x))
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#define ERROR(...) g_printerr("fastcgi.c:" G_STRINGIFY(__LINE__) ": " __VA_ARGS__)
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static void fd_init(int fd) {
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#ifdef _WIN32
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int i = 1;
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#endif
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#ifdef FD_CLOEXEC
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/* close fd on exec (cgi) */
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fcntl(fd, F_SETFD, FD_CLOEXEC);
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#endif
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#ifdef O_NONBLOCK
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fcntl(fd, F_SETFL, O_NONBLOCK | O_RDWR);
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#elif defined _WIN32
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ioctlsocket(fd, FIONBIO, &i);
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#endif
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}
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static void ev_io_add_events(struct ev_loop *loop, ev_io *watcher, int events) {
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if ((watcher->events & events) == events) return;
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ev_io_stop(loop, watcher);
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ev_io_set(watcher, watcher->fd, watcher->events | events);
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ev_io_start(loop, watcher);
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}
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static void ev_io_rem_events(struct ev_loop *loop, ev_io *watcher, int events) {
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if (0 == (watcher->events & events)) return;
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ev_io_stop(loop, watcher);
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ev_io_set(watcher, watcher->fd, watcher->events & ~events);
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ev_io_start(loop, watcher);
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}
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/* end: some util functions */
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static const gchar __padding[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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static void append_padding(GString *s, guint8 padlen) {
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g_string_append_len(s, __padding, padlen);
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}
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/* returns padding length */
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static guint8 stream_build_fcgi_record(GString *buf, guint8 type, guint16 requestid, guint16 datalen) {
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guint16 w;
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guint8 padlen = (8 - (datalen & 0x7)) % 8; /* padding must be < 8 */
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g_string_set_size(buf, FCGI_HEADER_LEN);
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g_string_truncate(buf, 0);
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g_string_append_c(buf, FCGI_VERSION_1);
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g_string_append_c(buf, type);
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w = htons(requestid);
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g_string_append_len(buf, (const gchar*) &w, sizeof(w));
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w = htons(datalen);
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g_string_append_len(buf, (const gchar*) &w, sizeof(w));
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g_string_append_c(buf, padlen);
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g_string_append_c(buf, 0);
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return padlen;
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}
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/* returns padding length */
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static guint8 stream_send_fcgi_record(fastcgi_gstring_queue *out, guint8 type, guint16 requestid, guint16 datalen) {
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GString *record = g_string_sized_new(FCGI_HEADER_LEN);
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guint8 padlen = stream_build_fcgi_record(record, type, requestid, datalen);
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fastcgi_gstring_queue_append(out, record);
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return padlen;
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}
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static void stream_send_data(fastcgi_gstring_queue *out, guint8 type, guint16 requestid, const gchar *data, size_t datalen) {
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while (datalen > 0) {
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guint16 tosend = (datalen > G_MAXUINT16) ? G_MAXUINT16 : datalen;
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guint8 padlen = stream_send_fcgi_record(out, type, requestid, tosend);
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GString *tmps = g_string_sized_new(tosend + padlen);
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g_string_append_len(tmps, data, tosend);
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append_padding(tmps, padlen);
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fastcgi_gstring_queue_append(out, tmps);
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data += tosend;
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datalen -= tosend;
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}
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}
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/* kills string */
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static void stream_send_string(fastcgi_gstring_queue *out, guint8 type, guint16 requestid, GString *data) {
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if (data->len > G_MAXUINT16) {
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stream_send_data(out, type, requestid, GSTR_LEN(data));
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g_string_free(data, TRUE);
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} else {
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guint8 padlen = stream_send_fcgi_record(out, type, requestid, data->len);
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append_padding(data, padlen);
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fastcgi_gstring_queue_append(out, data);
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}
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}
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static void stream_send_end_request(fastcgi_gstring_queue *out, guint16 requestID, gint32 appStatus, enum FCGI_ProtocolStatus status) {
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GString *record;
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record = g_string_sized_new(16);
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stream_build_fcgi_record(record, FCGI_END_REQUEST, requestID, 8);
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appStatus = htonl(appStatus);
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g_string_append_len(record, (const gchar*) &appStatus, sizeof(appStatus));
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g_string_append_c(record, status);
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g_string_append_len(record, __padding, 3);
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fastcgi_gstring_queue_append(out, record);
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}
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static void write_queue(fastcgi_connection *fcon) {
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const gssize max_rem_write = 256*1024;
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gssize rem_write = 256*1024;
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#ifdef TCP_CORK
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int corked = 0;
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#endif
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if (fcon->closing) return;
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#ifdef TCP_CORK
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/* Linux: put a cork into the socket as we want to combine the write() calls
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* but only if we really have multiple chunks
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*/
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if (fcon->write_queue->queue.length > 1) {
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corked = 1;
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setsockopt(fd, IPPROTO_TCP, TCP_CORK, &corked, sizeof(corked));
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}
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#endif
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while (rem_write > 0 && fcon->write_queue.length > 0) {
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GString *s = g_queue_peek_head(&fcon->write_queue.queue);
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gssize towrite = s->len - fcon->write_queue.offset, res;
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if (towrite > max_rem_write) towrite = max_rem_write;
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res = write(fcon->fd, s->str + fcon->write_queue.offset, towrite);
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if (-1 == res) {
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#ifdef TCP_CORK
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if (corked) {
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corked = 0;
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setsockopt(fd, IPPROTO_TCP, TCP_CORK, &corked, sizeof(corked));
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}
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#endif
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switch (errno) {
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case EINTR:
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case EAGAIN:
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#if EWOULDBLOCK != EAGAIN
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case EWOULDBLOCK:
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#endif
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goto out; /* try again later */
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case ECONNRESET:
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case EPIPE:
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fastcgi_connection_close(fcon);
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return;
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default:
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ERROR("write to fd=%d failed, %s\n", fcon->fd, g_strerror(errno) );
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fastcgi_connection_close(fcon);
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return;
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}
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} else {
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fcon->write_queue.offset += res;
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rem_write -= res;
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if (fcon->write_queue.offset == s->len) {
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g_queue_pop_head(&fcon->write_queue.queue);
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fcon->write_queue.offset = 0;
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fcon->write_queue.length -= s->len;
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g_string_free(s, TRUE);
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}
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}
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}
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#ifdef TCP_CORK
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if (corked) {
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corked = 0;
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setsockopt(fd, IPPROTO_TCP, TCP_CORK, &corked, sizeof(corked));
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}
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#endif
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out:
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if (!fcon->closing && rem_write != max_rem_write) {
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if (fcon->fsrv->callbacks->cb_wrote_data) {
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fcon->fsrv->callbacks->cb_wrote_data(fcon);
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}
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}
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if (!fcon->closing) {
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if (fcon->write_queue.length > 0) {
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ev_io_add_events(fcon->fsrv->loop, &fcon->fd_watcher, EV_WRITE);
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} else {
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ev_io_rem_events(fcon->fsrv->loop, &fcon->fd_watcher, EV_WRITE);
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if (0 == fcon->requestID) {
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if (!(fcon->flags & FCGI_KEEP_CONN)) {
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fastcgi_connection_close(fcon);
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}
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}
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}
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}
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}
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static GString* read_chunk(fastcgi_connection *fcon, guint maxlen) {
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gssize res;
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GString *str;
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int tmp_errno;
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str = g_string_sized_new(maxlen);
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g_string_set_size(str, maxlen);
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res = read(fcon->fd, str->str, maxlen);
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if (res == -1) {
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tmp_errno = errno;
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g_string_free(str, TRUE);
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errno = tmp_errno;
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return NULL;
|
||||
} else if (res == 0) {
|
||||
g_string_free(str, TRUE);
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errno = ECONNRESET;
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||||
return NULL;
|
||||
} else {
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||||
g_string_set_size(str, res);
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return str;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean read_append_chunk(fastcgi_connection *fcon, GString *str) {
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gssize res;
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int tmp_errno;
|
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guint curlen = str->len;
|
||||
const guint maxlen = fcon->content_remaining;
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if (0 == maxlen) return TRUE;
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|
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g_string_set_size(str, curlen + maxlen);
|
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res = read(fcon->fd, str->str + curlen, maxlen);
|
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if (res == -1) {
|
||||
tmp_errno = errno;
|
||||
g_string_set_size(str, curlen);
|
||||
errno = tmp_errno;
|
||||
return FALSE;
|
||||
} else if (res == 0) {
|
||||
g_string_set_size(str, curlen);
|
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errno = ECONNRESET;
|
||||
return FALSE;
|
||||
} else {
|
||||
g_string_set_size(str, curlen + res);
|
||||
fcon->content_remaining -= res;
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
|
||||
static gboolean read_key_value(fastcgi_connection *fcon, GString *buf, guint *pos, gchar **key, guint *keylen, gchar **value, guint *valuelen) {
|
||||
const unsigned char *data = (const unsigned char*) buf->str;
|
||||
guint32 klen, vlen;
|
||||
guint p = *pos, len = buf->len;
|
||||
|
||||
if (len - p < 2) return FALSE;
|
||||
|
||||
klen = data[p++];
|
||||
if (klen & 0x80) {
|
||||
if (len - p < 100) return FALSE;
|
||||
klen = ((klen & 0x7f) << 24) | (data[p] << 16) | (data[p+1] << 8) | data[p+2];
|
||||
p += 3;
|
||||
}
|
||||
vlen = data[p++];
|
||||
if (vlen & 0x80) {
|
||||
if (len - p < 100) return FALSE;
|
||||
vlen = ((vlen & 0x7f) << 24) | (data[p] << 16) | (data[p+1] << 8) | data[p+2];
|
||||
p += 3;
|
||||
}
|
||||
if (klen > FASTCGI_MAX_KEYLEN || vlen > FASTCGI_MAX_VALUELEN) {
|
||||
fastcgi_connection_close(fcon);
|
||||
return FALSE;
|
||||
}
|
||||
if (len - p < klen + vlen) return FALSE;
|
||||
*key = &buf->str[p];
|
||||
*keylen = klen;
|
||||
p += klen;
|
||||
*value = &buf->str[p];
|
||||
*valuelen = vlen;
|
||||
p += vlen;
|
||||
*pos = p;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void parse_params(const fastcgi_callbacks *fcbs, fastcgi_connection *fcon) {
|
||||
if (!fcon->current_header.contentLength) {
|
||||
fcbs->cb_new_request(fcon);
|
||||
g_string_truncate(fcon->parambuf, 0);
|
||||
} else {
|
||||
guint pos = 0, keylen = 0, valuelen = 0;
|
||||
gchar *key = NULL, *value = NULL;
|
||||
while (read_key_value(fcon, fcon->parambuf, &pos, &key, &keylen, &value, &valuelen)) {
|
||||
gchar *envvar = g_malloc(keylen + valuelen + 2);
|
||||
memcpy(envvar, key, keylen);
|
||||
envvar[keylen] = '=';
|
||||
memcpy(envvar + keylen + 1, value, valuelen);
|
||||
envvar[keylen+valuelen+1] = '\0';
|
||||
g_ptr_array_add(fcon->environ, envvar);
|
||||
}
|
||||
if (!fcon->closing)
|
||||
g_string_erase(fcon->parambuf, 0, pos);
|
||||
}
|
||||
}
|
||||
|
||||
static void parse_get_values(fastcgi_connection *fcon) {
|
||||
/* just send the request back and don't insert results */
|
||||
GString *tmp = g_string_sized_new(0);
|
||||
stream_send_string(&fcon->write_queue, FCGI_GET_VALUES_RESULT, 0, fcon->buffer);
|
||||
*fcon->buffer = *tmp;
|
||||
/* TODO: provide get-values result */
|
||||
}
|
||||
|
||||
static void read_queue(fastcgi_connection *fcon) {
|
||||
gssize res;
|
||||
GString *buf;
|
||||
const fastcgi_callbacks *fcbs = fcon->fsrv->callbacks;
|
||||
|
||||
for (;;) {
|
||||
if (fcon->closing || fcon->read_suspended) return;
|
||||
|
||||
if (fcon->headerbuf_used < 8) {
|
||||
const unsigned char *data = fcon->headerbuf;
|
||||
res = read(fcon->fd, fcon->headerbuf + fcon->headerbuf_used, 8 - fcon->headerbuf_used);
|
||||
if (0 == res) { errno = ECONNRESET; goto handle_error; }
|
||||
if (-1 == res) goto handle_error;
|
||||
fcon->headerbuf_used += res;
|
||||
if (fcon->headerbuf_used < 8) return; /* need more data */
|
||||
|
||||
fcon->current_header.version = data[0];
|
||||
fcon->current_header.type = data[1];
|
||||
fcon->current_header.requestID = (data[2] << 8) | (data[3]);
|
||||
fcon->current_header.contentLength = (data[4] << 8) | (data[5]);
|
||||
fcon->current_header.paddingLength = data[6];
|
||||
fcon->content_remaining = fcon->current_header.contentLength;
|
||||
fcon->padding_remaining = fcon->current_header.paddingLength;
|
||||
fcon->first = TRUE;
|
||||
g_string_truncate(fcon->buffer, 0);
|
||||
|
||||
if (fcon->current_header.version != FCGI_VERSION_1) {
|
||||
fastcgi_connection_close(fcon);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
if (fcon->current_header.type != FCGI_BEGIN_REQUEST &&
|
||||
(0 != fcon->current_header.requestID) && fcon->current_header.requestID != fcon->requestID) {
|
||||
/* ignore packet data */
|
||||
if (0 == fcon->content_remaining + fcon->padding_remaining) {
|
||||
fcon->headerbuf_used = 0;
|
||||
} else {
|
||||
if (NULL == (buf = read_chunk(fcon, fcon->content_remaining + fcon->padding_remaining))) goto handle_error;
|
||||
if (buf->len >= fcon->content_remaining) {
|
||||
fcon->padding_remaining -= buf->len - fcon->content_remaining;
|
||||
if (0 == fcon->padding_remaining) fcon->headerbuf_used = 0;
|
||||
} else {
|
||||
fcon->content_remaining -= buf->len;
|
||||
}
|
||||
g_string_free(buf, TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
if (fcon->first || fcon->content_remaining) {
|
||||
fcon->first = FALSE;
|
||||
switch (fcon->current_header.type) {
|
||||
case FCGI_BEGIN_REQUEST:
|
||||
if (8 != fcon->current_header.contentLength || 0 == fcon->current_header.requestID) goto error;
|
||||
if (!read_append_chunk(fcon, fcon->buffer)) goto handle_error;
|
||||
if (0 == fcon->content_remaining) {
|
||||
if (fcon->requestID) {
|
||||
stream_send_end_request(&fcon->write_queue, fcon->current_header.requestID, 0, FCGI_CANT_MPX_CONN);
|
||||
} else {
|
||||
unsigned char *data = (unsigned char*) fcon->buffer->str;
|
||||
fcon->requestID = fcon->current_header.requestID;
|
||||
fcon->role = (data[0] << 8) | (data[1]);
|
||||
fcon->flags = data[2];
|
||||
g_string_truncate(fcon->parambuf, 0);
|
||||
}
|
||||
}
|
||||
break;
|
||||
case FCGI_ABORT_REQUEST:
|
||||
if (0 != fcon->current_header.contentLength || 0 == fcon->current_header.requestID) goto error;
|
||||
fcbs->cb_request_aborted(fcon);
|
||||
break;
|
||||
case FCGI_END_REQUEST:
|
||||
goto error; /* invalid type */
|
||||
case FCGI_PARAMS:
|
||||
if (0 == fcon->current_header.requestID) goto error;
|
||||
if (!read_append_chunk(fcon, fcon->parambuf)) goto handle_error;
|
||||
parse_params(fcbs, fcon);
|
||||
break;
|
||||
case FCGI_STDIN:
|
||||
if (0 == fcon->current_header.requestID) goto error;
|
||||
buf = NULL;
|
||||
if (0 != fcon->content_remaining &&
|
||||
NULL == (buf = read_chunk(fcon, fcon->content_remaining + fcon->padding_remaining))) goto handle_error;
|
||||
if (buf) fcon->content_remaining -= buf->len;
|
||||
if (fcbs->cb_received_stdin) {
|
||||
fcbs->cb_received_stdin(fcon, buf);
|
||||
} else {
|
||||
g_string_free(buf, TRUE);
|
||||
}
|
||||
break;
|
||||
case FCGI_STDOUT:
|
||||
goto error; /* invalid type */
|
||||
case FCGI_STDERR:
|
||||
goto error; /* invalid type */
|
||||
case FCGI_DATA:
|
||||
if (0 == fcon->current_header.requestID) goto error;
|
||||
buf = NULL;
|
||||
if (0 != fcon->content_remaining &&
|
||||
NULL == (buf = read_chunk(fcon, fcon->content_remaining + fcon->padding_remaining))) goto handle_error;
|
||||
if (buf) fcon->content_remaining -= buf->len;
|
||||
if (fcbs->cb_received_data) {
|
||||
fcbs->cb_received_data(fcon, buf);
|
||||
} else {
|
||||
g_string_free(buf, TRUE);
|
||||
}
|
||||
break;
|
||||
case FCGI_GET_VALUES:
|
||||
if (0 != fcon->current_header.requestID) goto error;
|
||||
if (!read_append_chunk(fcon, fcon->buffer)) goto handle_error;
|
||||
if (0 == fcon->content_remaining)
|
||||
parse_get_values(fcon);
|
||||
break;
|
||||
case FCGI_GET_VALUES_RESULT:
|
||||
goto error; /* invalid type */
|
||||
break;
|
||||
case FCGI_UNKNOWN_TYPE:
|
||||
/* we didn't send anything fancy, so this is not expected */
|
||||
goto error; /* invalid type */
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (0 == fcon->content_remaining) {
|
||||
if (0 == fcon->padding_remaining) {
|
||||
fcon->headerbuf_used = 0;
|
||||
} else {
|
||||
if (NULL == (buf = read_chunk(fcon, fcon->content_remaining + fcon->padding_remaining))) goto handle_error;
|
||||
fcon->padding_remaining -= buf->len;
|
||||
if (0 == fcon->padding_remaining) {
|
||||
fcon->headerbuf_used = 0;
|
||||
}
|
||||
g_string_free(buf, TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
return;
|
||||
|
||||
handle_error:
|
||||
switch (errno) {
|
||||
case EINTR:
|
||||
case EAGAIN:
|
||||
#if EWOULDBLOCK != EAGAIN
|
||||
case EWOULDBLOCK:
|
||||
#endif
|
||||
return; /* try again later */
|
||||
case ECONNRESET:
|
||||
break;
|
||||
default:
|
||||
ERROR("read from fd=%d failed, %s\n", fcon->fd, g_strerror(errno) );
|
||||
break;
|
||||
}
|
||||
|
||||
error:
|
||||
if (0 != fcon->requestID)
|
||||
fcbs->cb_request_aborted(fcon);
|
||||
fastcgi_connection_close(fcon);
|
||||
}
|
||||
|
||||
static void fastcgi_connection_fd_cb(struct ev_loop *loop, ev_io *w, int revents) {
|
||||
fastcgi_connection *fcon = (fastcgi_connection*) w->data;
|
||||
UNUSED(loop);
|
||||
|
||||
if (revents & EV_READ) {
|
||||
read_queue(fcon);
|
||||
}
|
||||
|
||||
if (revents & EV_WRITE) {
|
||||
write_queue(fcon);
|
||||
}
|
||||
}
|
||||
|
||||
static fastcgi_connection *fastcgi_connecion_create(fastcgi_server *fsrv, gint fd, guint id) {
|
||||
fastcgi_connection *fcon = g_slice_new0(fastcgi_connection);
|
||||
|
||||
fcon->fsrv = fsrv;
|
||||
fcon->fcon_id = id;
|
||||
|
||||
fcon->buffer = g_string_sized_new(0);
|
||||
fcon->parambuf = g_string_sized_new(0);
|
||||
fcon->environ = g_ptr_array_new();
|
||||
|
||||
fcon->fd = fd;
|
||||
fd_init(fcon->fd);
|
||||
ev_io_init(&fcon->fd_watcher, fastcgi_connection_fd_cb, fcon->fd, EV_READ);
|
||||
fcon->fd_watcher.data = fcon;
|
||||
ev_io_start(fcon->fsrv->loop, &fcon->fd_watcher);
|
||||
|
||||
return fcon;
|
||||
}
|
||||
|
||||
static void fastcgi_connection_free(fastcgi_connection *fcon) {
|
||||
fcon->fsrv->callbacks->cb_reset_connection(fcon);
|
||||
|
||||
if (fcon->fd != -1) {
|
||||
ev_io_stop(fcon->fsrv->loop, &fcon->fd_watcher);
|
||||
close(fcon->fd);
|
||||
fcon->fd = -1;
|
||||
}
|
||||
|
||||
fastcgi_gstring_queue_clear(&fcon->write_queue);
|
||||
fastcgi_connection_environ_clear(fcon);
|
||||
g_ptr_array_free(fcon->environ, TRUE);
|
||||
g_string_free(fcon->buffer, TRUE);
|
||||
g_string_free(fcon->parambuf, TRUE);
|
||||
|
||||
g_slice_free(fastcgi_connection, fcon);
|
||||
}
|
||||
|
||||
void fastcgi_connection_close(fastcgi_connection *fcon) {
|
||||
fcon->closing = TRUE;
|
||||
if (fcon->fd != -1) {
|
||||
ev_io_stop(fcon->fsrv->loop, &fcon->fd_watcher);
|
||||
close(fcon->fd);
|
||||
fcon->fd = -1;
|
||||
}
|
||||
|
||||
fastcgi_gstring_queue_clear(&fcon->write_queue);
|
||||
|
||||
g_string_truncate(fcon->buffer, 0);
|
||||
g_string_truncate(fcon->parambuf, 0);
|
||||
fastcgi_connection_environ_clear(fcon);
|
||||
|
||||
ev_prepare_start(fcon->fsrv->loop, &fcon->fsrv->closing_watcher);
|
||||
}
|
||||
|
||||
static void fastcgi_server_fd_cb(struct ev_loop *loop, ev_io *w, int revents) {
|
||||
fastcgi_server *fsrv = (fastcgi_server*) w->data;
|
||||
fastcgi_connection *fcon;
|
||||
void (*cb_new_connection)(fastcgi_connection *fcon) = fsrv->callbacks->cb_new_connection;
|
||||
|
||||
g_assert(revents & EV_READ);
|
||||
|
||||
for (;;) {
|
||||
gint fd = accept(fsrv->fd, NULL, NULL);
|
||||
if (-1 == fd) {
|
||||
switch (errno) {
|
||||
case EAGAIN:
|
||||
#if EWOULDBLOCK != EAGAIN
|
||||
case EWOULDBLOCK:
|
||||
#endif
|
||||
case EINTR:
|
||||
/* we were stopped _before_ we had a connection */
|
||||
case ECONNABORTED: /* this is a FreeBSD thingy */
|
||||
/* we were stopped _after_ we had a connection */
|
||||
return;
|
||||
case EMFILE:
|
||||
if (0 == fsrv->max_connections) {
|
||||
fsrv->max_connections = fsrv->connections->len / 2;
|
||||
} else {
|
||||
fsrv->max_connections = fsrv->max_connections / 2;
|
||||
}
|
||||
ERROR("dropped connection limit to %u as we got EMFILE\n", fsrv->max_connections);
|
||||
ev_io_rem_events(loop, w, EV_READ);
|
||||
return;
|
||||
default:
|
||||
ERROR("accept failed on fd=%d with error: %s\nshutting down\n", fsrv->fd, g_strerror(errno));
|
||||
fastcgi_server_stop(fsrv);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
fcon = fastcgi_connecion_create(fsrv, fd, fsrv->connections->len);
|
||||
g_ptr_array_add(fsrv->connections, fcon);
|
||||
if (cb_new_connection) {
|
||||
cb_new_connection(fcon);
|
||||
}
|
||||
|
||||
if (fsrv->connections->len >= fsrv->max_connections) {
|
||||
ev_io_rem_events(loop, w, EV_READ);
|
||||
return;
|
||||
}
|
||||
|
||||
if (fsrv->do_shutdown) return;
|
||||
}
|
||||
}
|
||||
|
||||
static void fastcgi_cleanup_connections(fastcgi_server *fsrv) {
|
||||
guint i;
|
||||
|
||||
for (i = 0; i < fsrv->connections->len; ) {
|
||||
fastcgi_connection *fcon = g_ptr_array_index(fsrv->connections, i);
|
||||
if (fcon->closing) {
|
||||
fastcgi_connection *t_fcon;
|
||||
guint l = fsrv->connections->len-1;
|
||||
t_fcon = g_ptr_array_index(fsrv->connections, i) = g_ptr_array_index(fsrv->connections, l);
|
||||
g_ptr_array_set_size(fsrv->connections, l);
|
||||
t_fcon->fcon_id = i;
|
||||
fastcgi_connection_free(fcon);
|
||||
} else {
|
||||
i++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void fastcgi_closing_cb(struct ev_loop *loop, ev_prepare *w, int revents) {
|
||||
UNUSED(revents);
|
||||
ev_prepare_stop(loop, w);
|
||||
fastcgi_cleanup_connections((fastcgi_server*) w->data);
|
||||
}
|
||||
|
||||
fastcgi_server *fastcgi_server_create(struct ev_loop *loop, gint socketfd, const fastcgi_callbacks *callbacks, guint max_connections) {
|
||||
fastcgi_server *fsrv = g_slice_new0(fastcgi_server);
|
||||
|
||||
fsrv->callbacks = callbacks;
|
||||
|
||||
fsrv->max_connections = max_connections;
|
||||
|
||||
fsrv->connections = g_ptr_array_sized_new(fsrv->max_connections);
|
||||
|
||||
fsrv->loop = loop;
|
||||
fsrv->fd = socketfd;
|
||||
fd_init(fsrv->fd);
|
||||
ev_io_init(&fsrv->fd_watcher, fastcgi_server_fd_cb, fsrv->fd, EV_READ);
|
||||
fsrv->fd_watcher.data = fsrv;
|
||||
ev_io_start(fsrv->loop, &fsrv->fd_watcher);
|
||||
|
||||
ev_prepare_init(&fsrv->closing_watcher, fastcgi_closing_cb);
|
||||
fsrv->closing_watcher.data = fsrv;
|
||||
|
||||
return fsrv;
|
||||
}
|
||||
|
||||
void fastcgi_server_stop(fastcgi_server *fsrv) {
|
||||
if (fsrv->do_shutdown) return;
|
||||
fsrv->do_shutdown = TRUE;
|
||||
|
||||
ev_io_stop(fsrv->loop, &fsrv->fd_watcher);
|
||||
close(fsrv->fd);
|
||||
fsrv->fd = -1;
|
||||
}
|
||||
|
||||
void fastcgi_server_free(fastcgi_server *fsrv) {
|
||||
guint i;
|
||||
void (*cb_request_aborted)(fastcgi_connection *fcon) = fsrv->callbacks->cb_request_aborted;
|
||||
if (!fsrv->do_shutdown) fastcgi_server_stop(fsrv);
|
||||
ev_prepare_stop(fsrv->loop, &fsrv->closing_watcher);
|
||||
|
||||
for (i = 0; i < fsrv->connections->len; i++) {
|
||||
fastcgi_connection *fcon = g_ptr_array_index(fsrv->connections, i);
|
||||
cb_request_aborted(fcon);
|
||||
fcon->closing = TRUE;
|
||||
}
|
||||
fastcgi_cleanup_connections(fsrv);
|
||||
g_ptr_array_free(fsrv->connections, TRUE);
|
||||
|
||||
g_slice_free(fastcgi_server, fsrv);
|
||||
}
|
||||
|
||||
void fastcgi_end_request(fastcgi_connection *fcon, gint32 appStatus, enum FCGI_ProtocolStatus status) {
|
||||
gboolean had_data = (fcon->write_queue.length > 0);
|
||||
|
||||
if (0 == fcon->requestID) return;
|
||||
stream_send_end_request(&fcon->write_queue, fcon->requestID, appStatus, status);
|
||||
fcon->requestID = 0;
|
||||
if (!had_data) write_queue(fcon);
|
||||
}
|
||||
|
||||
void fastcgi_suspend_read(fastcgi_connection *fcon) {
|
||||
fcon->read_suspended = TRUE;
|
||||
ev_io_rem_events(fcon->fsrv->loop, &fcon->fd_watcher, EV_READ);
|
||||
}
|
||||
|
||||
void fastcgi_resume_read(fastcgi_connection *fcon) {
|
||||
fcon->read_suspended = FALSE;
|
||||
ev_io_add_events(fcon->fsrv->loop, &fcon->fd_watcher, EV_READ);
|
||||
}
|
||||
|
||||
void fastcgi_send_out(fastcgi_connection *fcon, GString *data) {
|
||||
gboolean had_data = (fcon->write_queue.length > 0);
|
||||
if (!data) {
|
||||
stream_send_fcgi_record(&fcon->write_queue, FCGI_STDOUT, fcon->requestID, 0);
|
||||
} else {
|
||||
stream_send_string(&fcon->write_queue, FCGI_STDOUT, fcon->requestID, data);
|
||||
}
|
||||
if (!had_data) write_queue(fcon);
|
||||
}
|
||||
|
||||
void fastcgi_send_err(fastcgi_connection *fcon, GString *data) {
|
||||
gboolean had_data = (fcon->write_queue.length > 0);
|
||||
if (!data) {
|
||||
stream_send_fcgi_record(&fcon->write_queue, FCGI_STDERR, fcon->requestID, 0);
|
||||
} else {
|
||||
stream_send_string(&fcon->write_queue, FCGI_STDERR, fcon->requestID, data);
|
||||
}
|
||||
if (!had_data) write_queue(fcon);
|
||||
}
|
||||
|
||||
void fastcgi_connection_environ_clear(fastcgi_connection *fcon) {
|
||||
guint i;
|
||||
for (i = 0; i < fcon->environ->len; i++) {
|
||||
gchar *s = (gchar*) g_ptr_array_index(fcon->environ, i);
|
||||
if (s) g_free(s);
|
||||
}
|
||||
g_ptr_array_set_size(fcon->environ, 0);
|
||||
}
|
||||
|
||||
const gchar* fastcgi_connection_environ_lookup(fastcgi_connection *fcon, const gchar* key, gsize keylen) {
|
||||
guint i;
|
||||
for (i = 0; i < fcon->environ->len; i++) {
|
||||
gchar *s = (gchar*) g_ptr_array_index(fcon->environ, i);
|
||||
if (s && 0 == strncmp(s, key, keylen) && s[keylen] == '=') {
|
||||
return &s[keylen+1];
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void fastcgi_gstring_queue_append(fastcgi_gstring_queue *queue, GString *buf) {
|
||||
if (!buf) return;
|
||||
g_queue_push_tail(&queue->queue, buf);
|
||||
queue->length += buf->len;
|
||||
}
|
||||
|
||||
void fastcgi_gstring_queue_clear(fastcgi_gstring_queue *queue) {
|
||||
GString *s;
|
||||
queue->length = 0;
|
||||
queue->offset = 0;
|
||||
while (NULL != (s = g_queue_pop_head(&queue->queue))) {
|
||||
g_string_free(s, TRUE);
|
||||
}
|
||||
}
|
||||
160
fastcgi.h
Normal file
160
fastcgi.h
Normal file
@ -0,0 +1,160 @@
|
||||
#ifndef _FCGI_CGI_FASTCGI_H
|
||||
#define _FCGI_CGI_FASTCGI_H
|
||||
|
||||
/* NO multiplexing support */
|
||||
/* Keep fastcgi.* independent */
|
||||
|
||||
#include <glib.h>
|
||||
#include <ev.h>
|
||||
|
||||
/* FastCGI constants */
|
||||
# define FCGI_VERSION_1 1
|
||||
# define FCGI_HEADER_LEN 8
|
||||
|
||||
enum FCGI_Type {
|
||||
FCGI_BEGIN_REQUEST = 1,
|
||||
FCGI_ABORT_REQUEST = 2,
|
||||
FCGI_END_REQUEST = 3,
|
||||
FCGI_PARAMS = 4,
|
||||
FCGI_STDIN = 5,
|
||||
FCGI_STDOUT = 6,
|
||||
FCGI_STDERR = 7,
|
||||
FCGI_DATA = 8,
|
||||
FCGI_GET_VALUES = 9,
|
||||
FCGI_GET_VALUES_RESULT = 10,
|
||||
FCGI_UNKNOWN_TYPE = 11
|
||||
};
|
||||
# define FCGI_MAXTYPE (FCGI_UNKNOWN_TYPE)
|
||||
|
||||
enum FCGI_Flags {
|
||||
FCGI_KEEP_CONN = 1
|
||||
};
|
||||
|
||||
enum FCGI_Role {
|
||||
FCGI_RESPONDER = 1,
|
||||
FCGI_AUTHORIZER = 2,
|
||||
FCGI_FILTER = 3
|
||||
};
|
||||
|
||||
enum FCGI_ProtocolStatus {
|
||||
FCGI_REQUEST_COMPLETE = 0,
|
||||
FCGI_CANT_MPX_CONN = 1,
|
||||
FCGI_OVERLOADED = 2,
|
||||
FCGI_UNKNOWN_ROLE = 3
|
||||
};
|
||||
|
||||
#define FASTCGI_MAX_KEYLEN 1024
|
||||
#define FASTCGI_MAX_VALUELEN 64*1024
|
||||
/* end FastCGI constants */
|
||||
|
||||
struct fastcgi_server;
|
||||
typedef struct fastcgi_server fastcgi_server;
|
||||
|
||||
struct fastcgi_callbacks;
|
||||
typedef struct fastcgi_callbacks fastcgi_callbacks;
|
||||
|
||||
struct fastcgi_connection;
|
||||
typedef struct fastcgi_connection fastcgi_connection;
|
||||
|
||||
struct fastcgi_gstring_queue;
|
||||
typedef struct fastcgi_gstring_queue fastcgi_gstring_queue;
|
||||
|
||||
struct fastcgi_server {
|
||||
/* custom user data */
|
||||
gpointer data;
|
||||
|
||||
/* private data */
|
||||
gboolean do_shutdown;
|
||||
|
||||
const fastcgi_callbacks *callbacks;
|
||||
|
||||
guint max_connections;
|
||||
GPtrArray *connections;
|
||||
guint cur_requests;
|
||||
|
||||
gint fd;
|
||||
struct ev_loop *loop;
|
||||
ev_io fd_watcher;
|
||||
ev_prepare closing_watcher;
|
||||
};
|
||||
|
||||
struct fastcgi_callbacks {
|
||||
void (*cb_new_connection)(fastcgi_connection *fcon); /* new connection accepted */
|
||||
void (*cb_new_request)(fastcgi_connection *fcon); /* new request on connection, env/params are ready */
|
||||
void (*cb_wrote_data)(fastcgi_connection *fcon);
|
||||
void (*cb_received_stdin)(fastcgi_connection *fcon, GString *data); /* data == NULL => eof */
|
||||
void (*cb_received_data)(fastcgi_connection *fcon, GString *data); /* data == NULL => eof */
|
||||
void (*cb_request_aborted)(fastcgi_connection *fcon);
|
||||
void (*cb_reset_connection)(fastcgi_connection *fcon); /* cleanup custom data before fcon is freed, not for keep-alive */
|
||||
};
|
||||
|
||||
struct fastcgi_gstring_queue {
|
||||
GQueue queue;
|
||||
gsize offset; /* offset in first chunk */
|
||||
gsize length;
|
||||
gboolean closed;
|
||||
};
|
||||
|
||||
struct fastcgi_connection {
|
||||
/* custom user data */
|
||||
gpointer data;
|
||||
|
||||
/* read/write */
|
||||
GPtrArray *environ;
|
||||
|
||||
/* read only */
|
||||
fastcgi_server *fsrv;
|
||||
guint fcon_id; /* index in server con array */
|
||||
gboolean closing; /* "dead" connection */
|
||||
|
||||
/* current request */
|
||||
guint16 requestID;
|
||||
guint16 role;
|
||||
guint8 flags;
|
||||
|
||||
/* private data */
|
||||
unsigned char headerbuf[8];
|
||||
guint headerbuf_used;
|
||||
gboolean first;
|
||||
|
||||
struct {
|
||||
guint8 version;
|
||||
guint8 type;
|
||||
guint16 requestID;
|
||||
guint16 contentLength;
|
||||
guint8 paddingLength;
|
||||
} current_header;
|
||||
|
||||
guint content_remaining, padding_remaining;
|
||||
|
||||
GString *buffer, *parambuf;
|
||||
|
||||
gint fd;
|
||||
ev_io fd_watcher;
|
||||
|
||||
gboolean read_suspended;
|
||||
|
||||
/* write queue */
|
||||
fastcgi_gstring_queue write_queue;
|
||||
};
|
||||
|
||||
fastcgi_server *fastcgi_server_create(struct ev_loop *loop, gint socketfd, const fastcgi_callbacks *callbacks, guint max_connections);
|
||||
void fastcgi_server_stop(fastcgi_server *fsrv); /* stop accepting new connections, closes listening socket */
|
||||
void fastcgi_server_free(fastcgi_server *fsrv);
|
||||
|
||||
void fastcgi_suspend_read(fastcgi_connection *fcon);
|
||||
void fastcgi_resume_read(fastcgi_connection *fcon);
|
||||
|
||||
void fastcgi_end_request(fastcgi_connection *fcon, gint32 appStatus, enum FCGI_ProtocolStatus status);
|
||||
void fastcgi_send_out(fastcgi_connection *fcon, GString *data);
|
||||
void fastcgi_send_err(fastcgi_connection *fcon, GString *data);
|
||||
|
||||
void fastcgi_connection_close(fastcgi_connection *fcon); /* shouldn't be needed */
|
||||
|
||||
void fastcgi_connection_environ_clear(fastcgi_connection *fcon);
|
||||
const gchar* fastcgi_connection_environ_lookup(fastcgi_connection *fcon, const gchar* key, gsize keylen);
|
||||
|
||||
void fastcgi_gstring_queue_append(fastcgi_gstring_queue *queue, GString *buf);
|
||||
void fastcgi_gstring_queue_clear(fastcgi_gstring_queue *queue);
|
||||
|
||||
#endif
|
||||
527
fcgi-cgi.c
Normal file
527
fcgi-cgi.c
Normal file
@ -0,0 +1,527 @@
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include "fastcgi.h"
|
||||
|
||||
#include <unistd.h>
|
||||
#include <errno.h>
|
||||
#include <stdlib.h>
|
||||
#include <fcntl.h>
|
||||
#include <stropts.h>
|
||||
|
||||
#define MAX_BUFFER_SIZE (64*1024)
|
||||
|
||||
#define GSTR_LEN(x) (x) ? (x)->str : "", (x) ? (x)->len : 0
|
||||
#define UNUSED(x) ((void)(x))
|
||||
|
||||
/* #define ERROR(...) g_printerr(G_STRLOC " (" G_STRFUNC "): " __VA_ARGS__) */
|
||||
#define __STR(x) #x
|
||||
#define ERROR(...) g_printerr("fcgi-cgi.c:" G_STRINGIFY(__LINE__) ": " __VA_ARGS__)
|
||||
|
||||
struct fcgi_cgi_server;
|
||||
typedef struct fcgi_cgi_server fcgi_cgi_server;
|
||||
|
||||
struct fcgi_cgi_child;
|
||||
typedef struct fcgi_cgi_child fcgi_cgi_child;
|
||||
|
||||
struct fcgi_cgi_server {
|
||||
struct ev_loop *loop;
|
||||
|
||||
fastcgi_server *fsrv;
|
||||
GPtrArray *aborted_pending_childs;
|
||||
|
||||
ev_signal
|
||||
sig_w_INT,
|
||||
sig_w_TERM,
|
||||
sig_w_HUP;
|
||||
};
|
||||
|
||||
struct fcgi_cgi_child {
|
||||
fcgi_cgi_server *srv;
|
||||
fastcgi_connection *fcon;
|
||||
gint aborted_id;
|
||||
|
||||
pid_t pid;
|
||||
gint child_status;
|
||||
ev_child child_watcher;
|
||||
|
||||
gint pipe_in, pipe_out, pipe_err;
|
||||
ev_io pipe_in_watcher, pipe_out_watcher, pipe_err_watcher;
|
||||
|
||||
/* write queue */
|
||||
fastcgi_gstring_queue write_queue;
|
||||
};
|
||||
|
||||
static fcgi_cgi_child* fcgi_cgi_child_create(fcgi_cgi_server *srv, fastcgi_connection *fcon);
|
||||
static void fcgi_cgi_child_check_done(fcgi_cgi_child *cld);
|
||||
static void fcgi_cgi_child_close_write(fcgi_cgi_child *cld);
|
||||
static void fcgi_cgi_child_close_read(fcgi_cgi_child *cld);
|
||||
static void fcgi_cgi_child_close_error(fcgi_cgi_child *cld);
|
||||
static void fcgi_cgi_child_free(fcgi_cgi_child *cld);
|
||||
static void fcgi_cgi_child_error(fcgi_cgi_child *cld);
|
||||
static void fcgi_cgi_child_start(fcgi_cgi_child *cld, const gchar *path);
|
||||
static void fcgi_cgi_wrote_data(fastcgi_connection *fcon);
|
||||
|
||||
/* move a fd to another and close the old one */
|
||||
static void move2fd(int srcfd, int dstfd) {
|
||||
if (srcfd != dstfd) {
|
||||
close(dstfd);
|
||||
dup2(srcfd, dstfd);
|
||||
close(srcfd);
|
||||
}
|
||||
}
|
||||
|
||||
static void fd_init(int fd) {
|
||||
#ifdef _WIN32
|
||||
int i = 1;
|
||||
#endif
|
||||
#ifdef FD_CLOEXEC
|
||||
/* close fd on exec (cgi) */
|
||||
fcntl(fd, F_SETFD, FD_CLOEXEC);
|
||||
#endif
|
||||
#ifdef O_NONBLOCK
|
||||
fcntl(fd, F_SETFL, O_NONBLOCK | O_RDWR);
|
||||
#elif defined _WIN32
|
||||
ioctlsocket(fd, FIONBIO, &i);
|
||||
#endif
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_child_cb(struct ev_loop *loop, ev_child *w, int revents) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) w->data;
|
||||
UNUSED(revents);
|
||||
|
||||
ev_child_stop(loop, w);
|
||||
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
|
||||
cld->pid = -1;
|
||||
cld->child_status = w->rstatus;
|
||||
fcgi_cgi_child_check_done(cld);
|
||||
}
|
||||
|
||||
static void write_queue(fcgi_cgi_child *cld) {
|
||||
const gssize max_rem_write = 256*1024;
|
||||
gssize rem_write = 256*1024;
|
||||
if (-1 == cld->pipe_out) return;
|
||||
|
||||
while (rem_write > 0 && cld->write_queue.length > 0) {
|
||||
GString *s = g_queue_peek_head(&cld->write_queue.queue);
|
||||
gssize towrite = s->len - cld->write_queue.offset, res;
|
||||
if (towrite > max_rem_write) towrite = max_rem_write;
|
||||
res = write(cld->pipe_out, s->str + cld->write_queue.offset, towrite);
|
||||
if (-1 == res) {
|
||||
switch (errno) {
|
||||
case EINTR:
|
||||
case EAGAIN:
|
||||
#if EWOULDBLOCK != EAGAIN
|
||||
case EWOULDBLOCK:
|
||||
#endif
|
||||
goto out; /* try again later */
|
||||
case ECONNRESET:
|
||||
case EPIPE:
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
return;
|
||||
default:
|
||||
ERROR("write to fd=%d failed, %s\n", cld->pipe_out, g_strerror(errno));
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
cld->write_queue.offset += res;
|
||||
rem_write -= res;
|
||||
if (cld->write_queue.offset == s->len) {
|
||||
g_queue_pop_head(&cld->write_queue.queue);
|
||||
cld->write_queue.offset = 0;
|
||||
cld->write_queue.length -= s->len;
|
||||
g_string_free(s, TRUE);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
if (-1 != cld->pipe_out) {
|
||||
if (cld->write_queue.length > 0) {
|
||||
ev_io_start(cld->srv->loop, &cld->pipe_out_watcher);
|
||||
if (cld->write_queue.length > MAX_BUFFER_SIZE) {
|
||||
fastcgi_suspend_read(cld->fcon);
|
||||
} else {
|
||||
fastcgi_resume_read(cld->fcon);
|
||||
}
|
||||
} else {
|
||||
if (cld->write_queue.closed) {
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
} else {
|
||||
ev_io_stop(cld->srv->loop, &cld->pipe_out_watcher);
|
||||
fastcgi_resume_read(cld->fcon);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static GString* read_chunk(gint fd, guint maxlen) {
|
||||
gssize res;
|
||||
GString *str;
|
||||
int tmp_errno;
|
||||
|
||||
str = g_string_sized_new(maxlen);
|
||||
g_string_set_size(str, maxlen);
|
||||
res = read(fd, str->str, maxlen);
|
||||
if (res == -1) {
|
||||
tmp_errno = errno;
|
||||
g_string_free(str, TRUE);
|
||||
errno = tmp_errno;
|
||||
return NULL;
|
||||
} else if (res == 0) {
|
||||
g_string_free(str, TRUE);
|
||||
errno = ECONNRESET;
|
||||
return NULL;
|
||||
} else {
|
||||
g_string_set_size(str, res);
|
||||
return str;
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_pipe_in_cb(struct ev_loop *loop, ev_io *w, int revents) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) w->data;
|
||||
GString *buf;
|
||||
UNUSED(loop); UNUSED(revents);
|
||||
|
||||
if (NULL == (buf = read_chunk(cld->pipe_in, 64*1024))) {
|
||||
switch (errno) {
|
||||
case EINTR:
|
||||
case EAGAIN:
|
||||
#if EWOULDBLOCK != EAGAIN
|
||||
case EWOULDBLOCK:
|
||||
#endif
|
||||
return; /* try again later */
|
||||
case ECONNRESET:
|
||||
fcgi_cgi_child_close_read(cld);
|
||||
break;
|
||||
default:
|
||||
ERROR("read from fd=%d failed, %s\n", cld->pipe_in, g_strerror(errno));
|
||||
fcgi_cgi_child_close_read(cld);
|
||||
break;
|
||||
}
|
||||
} else if (cld->fcon) {
|
||||
fastcgi_send_out(cld->fcon, buf);
|
||||
fcgi_cgi_wrote_data(cld->fcon);
|
||||
} else {
|
||||
g_string_free(buf, TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_pipe_out_cb(struct ev_loop *loop, ev_io *w, int revents) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) w->data;
|
||||
UNUSED(loop); UNUSED(revents);
|
||||
|
||||
write_queue(cld);
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_pipe_err_cb(struct ev_loop *loop, ev_io *w, int revents) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) w->data;
|
||||
GString *buf;
|
||||
UNUSED(loop); UNUSED(revents);
|
||||
|
||||
if (NULL == (buf = read_chunk(cld->pipe_err, 64*1024))) {
|
||||
switch (errno) {
|
||||
case EINTR:
|
||||
case EAGAIN:
|
||||
#if EWOULDBLOCK != EAGAIN
|
||||
case EWOULDBLOCK:
|
||||
#endif
|
||||
return; /* try again later */
|
||||
case ECONNRESET:
|
||||
fcgi_cgi_child_close_error(cld);
|
||||
break;
|
||||
default:
|
||||
ERROR("read from fd=%d failed, %s\n", cld->pipe_err, g_strerror(errno));
|
||||
fcgi_cgi_child_close_error(cld);
|
||||
break;
|
||||
}
|
||||
} else if (cld->fcon) {
|
||||
fastcgi_send_err(cld->fcon, buf);
|
||||
fcgi_cgi_wrote_data(cld->fcon);
|
||||
} else {
|
||||
g_string_free(buf, TRUE);
|
||||
}
|
||||
}
|
||||
|
||||
static fcgi_cgi_child* fcgi_cgi_child_create(fcgi_cgi_server *srv, fastcgi_connection *fcon) {
|
||||
fcgi_cgi_child *cld = g_slice_new0(fcgi_cgi_child);
|
||||
|
||||
cld->srv = srv;
|
||||
cld->fcon = fcon;
|
||||
cld->aborted_id = -1;
|
||||
|
||||
cld->pid = -1;
|
||||
ev_child_init(&cld->child_watcher, fcgi_cgi_child_child_cb, -1, 0);
|
||||
cld->child_watcher.data = cld;
|
||||
|
||||
cld->pipe_in = cld->pipe_out = -1;
|
||||
ev_io_init(&cld->pipe_in_watcher, fcgi_cgi_child_pipe_in_cb, -1, 0);
|
||||
cld->pipe_in_watcher.data = cld;
|
||||
ev_io_init(&cld->pipe_out_watcher, fcgi_cgi_child_pipe_out_cb, -1, 0);
|
||||
cld->pipe_out_watcher.data = cld;
|
||||
ev_io_init(&cld->pipe_err_watcher, fcgi_cgi_child_pipe_err_cb, -1, 0);
|
||||
cld->pipe_err_watcher.data = cld;
|
||||
|
||||
return cld;
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_check_done(fcgi_cgi_child *cld) {
|
||||
if (!cld->fcon) {
|
||||
if (-1 != cld->aborted_id && (cld->pid == -1 || (cld->pipe_out == -1 && cld->pipe_in == -1))) {
|
||||
fcgi_cgi_child *t_cld;
|
||||
GPtrArray *a = cld->srv->aborted_pending_childs;
|
||||
guint i = a->len - 1;
|
||||
t_cld = g_ptr_array_index(a, cld->aborted_id) = g_ptr_array_index(a, i);
|
||||
g_ptr_array_set_size(a, i);
|
||||
t_cld->aborted_id = cld->aborted_id;
|
||||
cld->aborted_id = -1;
|
||||
fcgi_cgi_child_free(cld);
|
||||
}
|
||||
} else {
|
||||
if (cld->pid == -1 && cld->pipe_out == -1 && cld->pipe_in == -1 && cld->pipe_err == -1) {
|
||||
fastcgi_end_request(cld->fcon, cld->child_status, FCGI_REQUEST_COMPLETE);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_close_write(fcgi_cgi_child *cld) {
|
||||
if (cld->pipe_out != -1) {
|
||||
ev_io_stop(cld->srv->loop, &cld->pipe_out_watcher);
|
||||
close(cld->pipe_out);
|
||||
cld->pipe_out = -1;
|
||||
fastcgi_gstring_queue_clear(&cld->write_queue);
|
||||
cld->write_queue.closed = TRUE;
|
||||
fcgi_cgi_child_check_done(cld);
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_close_read(fcgi_cgi_child *cld) {
|
||||
if (cld->pipe_in != -1) {
|
||||
ev_io_stop(cld->srv->loop, &cld->pipe_in_watcher);
|
||||
close(cld->pipe_in);
|
||||
cld->pipe_in = -1;
|
||||
if (cld->fcon) fastcgi_send_out(cld->fcon, NULL);
|
||||
fcgi_cgi_child_check_done(cld);
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_close_error(fcgi_cgi_child *cld) {
|
||||
if (cld->pipe_err != -1) {
|
||||
ev_io_stop(cld->srv->loop, &cld->pipe_err_watcher);
|
||||
close(cld->pipe_err);
|
||||
cld->pipe_err = -1;
|
||||
if (cld->fcon) fastcgi_send_err(cld->fcon, NULL);
|
||||
fcgi_cgi_child_check_done(cld);
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_free(fcgi_cgi_child *cld) {
|
||||
if (cld->fcon) cld->fcon->data = NULL;
|
||||
cld->fcon = NULL;
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
fcgi_cgi_child_close_read(cld);
|
||||
fcgi_cgi_child_close_error(cld);
|
||||
ev_child_stop(cld->srv->loop, &cld->child_watcher);
|
||||
g_slice_free(fcgi_cgi_child, cld);
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_error(fcgi_cgi_child *cld) {
|
||||
if (cld->fcon) {
|
||||
fastcgi_connection_close(cld->fcon);
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_child_start(fcgi_cgi_child *cld, const gchar *path) {
|
||||
int pipes_to[2] = {-1, -1}, pipes_from[2] = {-1, -1}, pipes_err[2] = {-1, -1};
|
||||
|
||||
if (-1 == pipe(pipes_to)) {
|
||||
ERROR("couldn't create pipe: %s\n", g_strerror(errno));
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (-1 == pipe(pipes_from)) {
|
||||
ERROR("couldn't create pipe: %s\n", g_strerror(errno));
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (-1 == pipe(pipes_err)) {
|
||||
ERROR("couldn't create pipe: %s\n", g_strerror(errno));
|
||||
goto error;
|
||||
}
|
||||
|
||||
pid_t pid = fork();
|
||||
switch (pid) {
|
||||
case 0: {
|
||||
GPtrArray *enva = cld->fcon->environ;
|
||||
char **newenv;
|
||||
char *const args[] = { (char *) path, NULL };
|
||||
|
||||
close(pipes_to[1]); close(pipes_from[0]); close(pipes_err[0]);
|
||||
move2fd(pipes_to[0], 0);
|
||||
move2fd(pipes_from[1], 1);
|
||||
move2fd(pipes_err[1], 2);
|
||||
|
||||
g_ptr_array_add(enva, NULL);
|
||||
newenv = (char**) g_ptr_array_free(enva, FALSE);
|
||||
execve(path, args, newenv);
|
||||
|
||||
ERROR("couldn't execve '%s': %s\n", path, g_strerror(errno));
|
||||
exit(-1);
|
||||
|
||||
}
|
||||
break;
|
||||
case -1:
|
||||
ERROR("couldn't fork: %s\n", g_strerror(errno));
|
||||
goto error;
|
||||
default:
|
||||
cld->pid = pid;
|
||||
ev_child_set(&cld->child_watcher, cld->pid, 0);
|
||||
ev_child_start(cld->srv->loop, &cld->child_watcher);
|
||||
close(pipes_to[0]); close(pipes_from[1]); close(pipes_err[1]);
|
||||
fd_init(pipes_to[1]); fd_init(pipes_from[0]); fd_init(pipes_err[0]);
|
||||
cld->pipe_out = pipes_to[1];
|
||||
cld->pipe_in = pipes_from[0];
|
||||
cld->pipe_err = pipes_err[0];
|
||||
ev_io_set(&cld->pipe_out_watcher, cld->pipe_out, EV_WRITE);
|
||||
ev_io_set(&cld->pipe_in_watcher, cld->pipe_in, EV_READ);
|
||||
ev_io_set(&cld->pipe_err_watcher, cld->pipe_err, EV_READ);
|
||||
if (cld->write_queue.length > 0) ev_io_start(cld->srv->loop, &cld->pipe_out_watcher);
|
||||
ev_io_start(cld->srv->loop, &cld->pipe_in_watcher);
|
||||
ev_io_start(cld->srv->loop, &cld->pipe_err_watcher);
|
||||
break;
|
||||
}
|
||||
|
||||
return;
|
||||
error:
|
||||
close(pipes_to[0]); close(pipes_to[1]);
|
||||
close(pipes_from[0]); close(pipes_from[1]);
|
||||
close(pipes_err[0]); close(pipes_err[1]);
|
||||
fcgi_cgi_child_error(cld);
|
||||
}
|
||||
|
||||
static void fcgi_cgi_new_request(fastcgi_connection *fcon) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) fcon->data;
|
||||
if (cld) return;
|
||||
cld = fcgi_cgi_child_create(fcon->fsrv->data, fcon);
|
||||
fcon->data = cld;
|
||||
fcgi_cgi_child_start(cld, "/usr/bin/php5-cgi");
|
||||
}
|
||||
|
||||
static void fcgi_cgi_wrote_data(fastcgi_connection *fcon) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) fcon->data;
|
||||
if (!cld) return;
|
||||
if (cld->fcon->write_queue.length < MAX_BUFFER_SIZE) {
|
||||
if (-1 != cld->pipe_in) ev_io_start(cld->srv->loop, &cld->pipe_in_watcher);
|
||||
if (-1 != cld->pipe_err) ev_io_start(cld->srv->loop, &cld->pipe_err_watcher);
|
||||
} else {
|
||||
if (-1 != cld->pipe_in) ev_io_stop(cld->srv->loop, &cld->pipe_in_watcher);
|
||||
if (-1 != cld->pipe_err) ev_io_stop(cld->srv->loop, &cld->pipe_err_watcher);
|
||||
}
|
||||
}
|
||||
|
||||
static void fcgi_cgi_received_stdin(fastcgi_connection *fcon, GString *data) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) fcon->data;
|
||||
/* if proc is running but pipe closed -> drop data */
|
||||
if (!cld || cld->write_queue.closed) {
|
||||
if (data) g_string_free(data, TRUE);
|
||||
return;
|
||||
}
|
||||
fastcgi_gstring_queue_append(&cld->write_queue, data);
|
||||
write_queue(cld); /* if we don't call this we have to check the write-queue length */
|
||||
}
|
||||
|
||||
static void fcgi_cgi_request_aborted(fastcgi_connection *fcon) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) fcon->data;
|
||||
if (!cld) return;
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
}
|
||||
|
||||
static void fcgi_cgi_reset_connection(fastcgi_connection *fcon) {
|
||||
fcgi_cgi_child *cld = (fcgi_cgi_child*) fcon->data;
|
||||
if (!cld) return;
|
||||
fcon->data = NULL;
|
||||
cld->fcon = NULL;
|
||||
if (cld->pid == -1 || (cld->pipe_out == -1 && cld->pipe_in == -1)) {
|
||||
fcgi_cgi_child_free(cld);
|
||||
} else {
|
||||
fcgi_cgi_child_close_write(cld);
|
||||
cld->aborted_id = cld->srv->aborted_pending_childs->len;
|
||||
g_ptr_array_add(cld->srv->aborted_pending_childs, cld);
|
||||
}
|
||||
}
|
||||
|
||||
static const fastcgi_callbacks cgi_callbacks = {
|
||||
/* cb_new_connection: */ NULL,
|
||||
/* cb_new_request: */ fcgi_cgi_new_request,
|
||||
/* cb_wrote_data: */ fcgi_cgi_wrote_data,
|
||||
/* cb_received_stdin: */ fcgi_cgi_received_stdin,
|
||||
/* cb_received_data: */ NULL,
|
||||
/* cb_request_aborted: */ fcgi_cgi_request_aborted,
|
||||
/* cb_reset_connection: */ fcgi_cgi_reset_connection
|
||||
};
|
||||
|
||||
static fcgi_cgi_server* fcgi_cgi_server_create(struct ev_loop *loop, int fd) {
|
||||
fcgi_cgi_server* srv = g_slice_new0(fcgi_cgi_server);
|
||||
srv->loop = loop;
|
||||
srv->aborted_pending_childs = g_ptr_array_new();
|
||||
srv->fsrv = fastcgi_server_create(loop, fd, &cgi_callbacks, 10);
|
||||
srv->fsrv->data = srv;
|
||||
return srv;
|
||||
}
|
||||
|
||||
static void fcgi_cgi_server_free(fcgi_cgi_server* srv) {
|
||||
guint i;
|
||||
for (i = 0; i < srv->aborted_pending_childs->len; i++) {
|
||||
fcgi_cgi_child_free(g_ptr_array_index(srv->aborted_pending_childs, i));
|
||||
}
|
||||
fastcgi_server_free(srv->fsrv);
|
||||
g_slice_free(fcgi_cgi_server, srv);
|
||||
}
|
||||
|
||||
#define CATCH_SIGNAL(loop, cb, n) do {\
|
||||
ev_init(&srv->sig_w_##n, cb); \
|
||||
ev_signal_set(&srv->sig_w_##n, SIG##n); \
|
||||
ev_signal_start(loop, &srv->sig_w_##n); \
|
||||
srv->sig_w_##n.data = srv; \
|
||||
ev_unref(loop); /* Signal watchers shouldn't keep loop alive */ \
|
||||
} while (0)
|
||||
|
||||
#define UNCATCH_SIGNAL(loop, n) do {\
|
||||
ev_ref(loop); \
|
||||
ev_signal_stop(loop, &srv->sig_w_##n); \
|
||||
} while (0)
|
||||
|
||||
static void sigint_cb(struct ev_loop *loop, struct ev_signal *w, int revents) {
|
||||
fcgi_cgi_server *srv = (fcgi_cgi_server*) w->data;
|
||||
UNUSED(revents);
|
||||
|
||||
if (!srv->fsrv->do_shutdown) {
|
||||
ERROR("Got signal, shutdown\n");
|
||||
fastcgi_server_stop(srv->fsrv);
|
||||
} else {
|
||||
ERROR("Got second signal, force shutdown\n");
|
||||
ev_unloop(loop, EVUNLOOP_ALL);
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
struct ev_loop *loop;
|
||||
fcgi_cgi_server* srv;
|
||||
|
||||
loop = ev_default_loop(0);
|
||||
srv = fcgi_cgi_server_create(loop, 0);
|
||||
|
||||
signal(SIGPIPE, SIG_IGN);
|
||||
CATCH_SIGNAL(loop, sigint_cb, INT);
|
||||
CATCH_SIGNAL(loop, sigint_cb, TERM);
|
||||
CATCH_SIGNAL(loop, sigint_cb, HUP);
|
||||
|
||||
ev_loop(loop, 0);
|
||||
fcgi_cgi_server_free(srv);
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user