diff options
Diffstat (limited to 'src/libfast')
| -rw-r--r-- | src/libfast/Makefile.am | 8 | ||||
| -rw-r--r-- | src/libfast/Makefile.in | 497 | ||||
| -rw-r--r-- | src/libfast/context.h | 44 | ||||
| -rw-r--r-- | src/libfast/controller.h | 79 | ||||
| -rw-r--r-- | src/libfast/dispatcher.c | 385 | ||||
| -rw-r--r-- | src/libfast/dispatcher.h | 139 | ||||
| -rw-r--r-- | src/libfast/filter.h | 65 | ||||
| -rw-r--r-- | src/libfast/request.c | 447 | ||||
| -rw-r--r-- | src/libfast/request.h | 186 | ||||
| -rw-r--r-- | src/libfast/session.c | 219 | ||||
| -rw-r--r-- | src/libfast/session.h | 80 |
11 files changed, 2149 insertions, 0 deletions
diff --git a/src/libfast/Makefile.am b/src/libfast/Makefile.am new file mode 100644 index 000000000..6104f335d --- /dev/null +++ b/src/libfast/Makefile.am @@ -0,0 +1,8 @@ +lib_LTLIBRARIES = libfast.la + +libfast_la_SOURCES = context.h dispatcher.c request.h session.h \ + controller.h dispatcher.h request.c session.c filter.h +libfast_la_LIBADD = $(top_builddir)/src/libstrongswan/libstrongswan.la \ + -lfcgi -lpthread -lneo_cgi -lneo_cs -lneo_utl -lz +INCLUDES = -I$(top_srcdir)/src/libstrongswan -I/usr/include/ClearSilver +AM_CFLAGS = -rdynamic diff --git a/src/libfast/Makefile.in b/src/libfast/Makefile.in new file mode 100644 index 000000000..5a1ab491e --- /dev/null +++ b/src/libfast/Makefile.in @@ -0,0 +1,497 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; 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you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: context.h 3489 2008-02-22 09:40:58Z martin $ + */ + +/** + * @defgroup context context + * @{ @ingroup libfast + */ + +#ifndef CONTEXT_H_ +#define CONTEXT_H_ + +typedef struct context_t context_t; + +/** + * Constructor function for a user specific context. + */ +typedef context_t *(*context_constructor_t)(void *param); + +/** + * User specific session context, to extend. + */ +struct context_t { + + /** + * Destroy the context_t. + */ + void (*destroy) (context_t *this); +}; + +#endif /* CONTEXT_H_ @}*/ diff --git a/src/libfast/controller.h b/src/libfast/controller.h new file mode 100644 index 000000000..162e114e3 --- /dev/null +++ b/src/libfast/controller.h @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: controller.h 3489 2008-02-22 09:40:58Z martin $ + */ + +/** + * @defgroup controller_i controller + * @{ @ingroup libfast + */ + +#ifndef CONTROLLER_H_ +#define CONTROLLER_H_ + +#include "request.h" +#include "context.h" + +typedef struct controller_t controller_t; + +/** + * Constructor function for a controller. + * + * @param context session specific context, implements context_t + * @param param user supplied param, as registered to the dispatcher + */ +typedef controller_t *(*controller_constructor_t)(context_t* context, void *param); + +/** + * Controller interface, to be implemented by users controllers. + * + * Controller instances get created per session, so each session has an + * associated set of private controller instances. + * The controller handle function is called for each incoming request. + */ +struct controller_t { + + /** + * Get the name of the controller. + * + * @return name of the controller + */ + char* (*get_name)(controller_t *this); + + /** + * Handle a HTTP request for that controller. + * + * Request URLs are parsed in the form + * controller_name/p1/p2/p3/p4/p5 with a maximum of 5 parameters. Each + * parameter not found in the request URL is set to NULL. + * + * @param request HTTP request + * @param p1 first parameter + * @param p2 second parameter + * @param p3 third parameter + * @param p4 forth parameter + * @param p5 fifth parameter + * @return + */ + void (*handle)(controller_t *this, request_t *request, + char *p1, char *p2, char *p3, char *p4, char *p5); + + /** + * Destroy the controller instance. + */ + void (*destroy) (controller_t *this); +}; + +#endif /* CONTROLLER_H_ @} */ diff --git a/src/libfast/dispatcher.c b/src/libfast/dispatcher.c new file mode 100644 index 000000000..e87fd246f --- /dev/null +++ b/src/libfast/dispatcher.c @@ -0,0 +1,385 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: dispatcher.c 3672 2008-03-27 10:24:37Z martin $ + */ + +#include "dispatcher.h" + +#include "request.h" +#include "session.h" + +#include <fcgiapp.h> +#include <pthread.h> +#include <signal.h> +#include <unistd.h> + +#include <debug.h> +#include <utils/linked_list.h> + +typedef struct private_dispatcher_t private_dispatcher_t; + +/** + * private data of the task manager + */ +struct private_dispatcher_t { + + /** + * public functions + */ + dispatcher_t public; + + /** + * fcgi socket fd + */ + int fd; + + /** + * thread list + */ + pthread_t *threads; + + /** + * number of threads in "threads" + */ + int thread_count; + + /** + * session locking mutex + */ + pthread_mutex_t mutex; + + /** + * List of sessions + */ + linked_list_t *sessions; + + /** + * session timeout + */ + time_t timeout; + + /** + * running in debug mode? + */ + bool debug; + + /** + * List of controllers controller_constructor_t + */ + linked_list_t *controllers; + + /** + * List of filters filter_constructor_t + */ + linked_list_t *filters; + + /** + * constructor function to create session context (in controller_entry_t) + */ + context_constructor_t context_constructor; + + /** + * user param to context constructor + */ + void *param; +}; + +typedef struct { + /** constructor function */ + controller_constructor_t constructor; + /** parameter to constructor */ + void *param; +} controller_entry_t; + +typedef struct { + /** constructor function */ + filter_constructor_t constructor; + /** parameter to constructor */ + void *param; +} filter_entry_t; + +typedef struct { + /** session instance */ + session_t *session; + /** condvar to wait for session */ + pthread_cond_t cond; + /** client host address, to prevent session hijacking */ + char *host; + /** TRUE if session is in use */ + bool in_use; + /** last use of the session */ + time_t used; + /** has the session been closed by the handler? */ + bool closed; +} session_entry_t; + +/** + * create a session and instanciate controllers + */ +static session_t* load_session(private_dispatcher_t *this) +{ + iterator_t *iterator; + controller_entry_t *centry; + filter_entry_t *fentry; + session_t *session; + context_t *context = NULL; + controller_t *controller; + filter_t *filter; + + if (this->context_constructor) + { + context = this->context_constructor(this->param); + } + session = session_create(context); + + iterator = this->controllers->create_iterator(this->controllers, TRUE); + while (iterator->iterate(iterator, (void**)¢ry)) + { + controller = centry->constructor(context, centry->param); + session->add_controller(session, controller); + } + iterator->destroy(iterator); + + iterator = this->filters->create_iterator(this->filters, TRUE); + while (iterator->iterate(iterator, (void**)&fentry)) + { + filter = fentry->constructor(context, fentry->param); + session->add_filter(session, filter); + } + iterator->destroy(iterator); + + return session; +} + +/** + * create a new session entry + */ +static session_entry_t *session_entry_create(private_dispatcher_t *this, + char *host) +{ + session_entry_t *entry; + + entry = malloc_thing(session_entry_t); + entry->in_use = FALSE; + entry->closed = FALSE; + pthread_cond_init(&entry->cond, NULL); + entry->session = load_session(this); + entry->used = time(NULL); + entry->host = strdup(host); + + return entry; +} + +static void session_entry_destroy(session_entry_t *entry) +{ + entry->session->destroy(entry->session); + free(entry->host); + free(entry); +} + +/** + * Implementation of dispatcher_t.add_controller. + */ +static void add_controller(private_dispatcher_t *this, + controller_constructor_t constructor, void *param) +{ + controller_entry_t *entry = malloc_thing(controller_entry_t); + + entry->constructor = constructor; + entry->param = param; + this->controllers->insert_last(this->controllers, entry); +} + +/** + * Implementation of dispatcher_t.add_filter. + */ +static void add_filter(private_dispatcher_t *this, + filter_constructor_t constructor, void *param) +{ + filter_entry_t *entry = malloc_thing(filter_entry_t); + + entry->constructor = constructor; + entry->param = param; + this->filters->insert_last(this->filters, entry); +} + +/** + * Actual dispatching code + */ +static void dispatch(private_dispatcher_t *this) +{ + pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL); + + while (TRUE) + { + request_t *request; + session_entry_t *current, *found = NULL; + iterator_t *iterator; + time_t now; + char *sid; + + pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL); + request = request_create(this->fd, this->debug); + pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL); + + if (request == NULL) + { + continue; + } + sid = request->get_cookie(request, "SID"); + now = time(NULL); + + /* find session */ + pthread_mutex_lock(&this->mutex); + iterator = this->sessions->create_iterator(this->sessions, TRUE); + while (iterator->iterate(iterator, (void**)¤t)) + { + /* check all sessions for timeout or close flag + * TODO: use a seperate cleanup thread */ + if (!current->in_use && + (current->used < now - this->timeout || current->closed)) + { + iterator->remove(iterator); + session_entry_destroy(current); + continue; + } + /* find by session ID. Prevent session hijacking by host check */ + if (!found && sid && + streq(current->session->get_sid(current->session), sid) && + streq(current->host, request->get_host(request))) + { + found = current; + } + } + iterator->destroy(iterator); + + if (found) + { + /* wait until session is unused */ + while (found->in_use) + { + pthread_cond_wait(&found->cond, &this->mutex); + } + } + else + { /* create a new session if not found */ + found = session_entry_create(this, request->get_host(request)); + this->sessions->insert_first(this->sessions, found); + } + found->in_use = TRUE; + pthread_mutex_unlock(&this->mutex); + + /* start processing */ + found->session->process(found->session, request); + found->used = time(NULL); + + /* release session */ + pthread_mutex_lock(&this->mutex); + found->in_use = FALSE; + found->closed = request->session_closed(request); + pthread_cond_signal(&found->cond); + pthread_mutex_unlock(&this->mutex); + + /* cleanup */ + request->destroy(request); + } +} + +/** + * Implementation of dispatcher_t.run. + */ +static void run(private_dispatcher_t *this, int threads) +{ + this->thread_count = threads; + this->threads = malloc(sizeof(pthread_t) * threads); + while (threads) + { + if (pthread_create(&this->threads[threads - 1], + NULL, (void*)dispatch, this) == 0) + { + threads--; + } + } +} + +/** + * Implementation of dispatcher_t.waitsignal. + */ +static void waitsignal(private_dispatcher_t *this) +{ + sigset_t set; + int sig; + + sigemptyset(&set); + sigaddset(&set, SIGINT); + sigaddset(&set, SIGTERM); + sigaddset(&set, SIGHUP); + sigprocmask(SIG_BLOCK, &set, NULL); + sigwait(&set, &sig); +} + +/** + * Implementation of dispatcher_t.destroy + */ +static void destroy(private_dispatcher_t *this) +{ + FCGX_ShutdownPending(); + while (this->thread_count--) + { + pthread_cancel(this->threads[this->thread_count]); + pthread_join(this->threads[this->thread_count], NULL); + } + this->sessions->destroy_function(this->sessions, (void*)session_entry_destroy); + this->controllers->destroy_function(this->controllers, free); + this->filters->destroy_function(this->filters, free); + free(this->threads); + free(this); +} + +/* + * see header file + */ +dispatcher_t *dispatcher_create(char *socket, bool debug, int timeout, + context_constructor_t constructor, void *param) +{ + private_dispatcher_t *this = malloc_thing(private_dispatcher_t); + + this->public.add_controller = (void(*)(dispatcher_t*, controller_constructor_t, void*))add_controller; + this->public.add_filter = (void(*)(dispatcher_t*,filter_constructor_t constructor, void *param))add_filter; + this->public.run = (void(*)(dispatcher_t*, int threads))run; + this->public.waitsignal = (void(*)(dispatcher_t*))waitsignal; + this->public.destroy = (void(*)(dispatcher_t*))destroy; + + this->sessions = linked_list_create(); + this->controllers = linked_list_create(); + this->filters = linked_list_create(); + this->context_constructor = constructor; + pthread_mutex_init(&this->mutex, NULL); + this->param = param; + this->fd = 0; + this->timeout = timeout; + this->debug = debug; + this->threads = NULL; + + FCGX_Init(); + + if (socket) + { + unlink(socket); + this->fd = FCGX_OpenSocket(socket, 10); + } + return &this->public; +} + diff --git a/src/libfast/dispatcher.h b/src/libfast/dispatcher.h new file mode 100644 index 000000000..98a7b7e30 --- /dev/null +++ b/src/libfast/dispatcher.h @@ -0,0 +1,139 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: dispatcher.h 3519 2008-03-02 12:14:34Z martin $ + */ + +/** + * @defgroup libfast libfast + * @{ + * FastCGI Application Server w/ templates. + * + * Libfast is a framework to write web applications in an MVC fashion. It uses + * the ClearSilver template engine and communicates through FastCGI with + * the webserver. It is multithreaded and really fast. + * + * The application has a global context and a session context. The global + * context is accessed from all sessions simultaneously and therefore + * needs to be threadsave. Often a database wrapper is the global context. + * The session context is instanciated per session. Sessions are managed + * automatically through session cookies. The session context is kept alive + * until the session times out. It must implement the context_t interface and + * a #context_constructor_t is needed to create instances. To each session, + * a set of controllers gets instanciated. The controller instances are per + * session, so you can hold private data for each user. + * Controllers need to implement the controller_t interface and need a + * #controller_constructor_t function to create instances. + * + * A small example shows how to set up libfast: + * @code + dispatcher_t *dispatcher; + your_global_context_implementation_t *global; + + global = initialize_your_global_context(); + + dispatcher = dispatcher_create(NULL, FALSE, 180, + (context_constructor_t)your_session_context_create, global); + dispatcher->add_controller(dispatcher, your_controller1_create, param1); + dispatcher->add_controller(dispatcher, your_controller2_create, param2); + + dispatcher->run(dispatcher, 20); + + dispatcher->waitsignal(dispatcher); + + dispatcher->destroy(dispatcher); + global->destroy(); + @endcode + * @} + * + * @defgroup dispatcher dispatcher + * @{ @ingroup libfast + */ + +#ifndef DISPATCHER_H_ +#define DISPATCHER_H_ + +#include "controller.h" +#include "filter.h" + +typedef struct dispatcher_t dispatcher_t; + +/** + * Dispatcher, accepts connections using multiple threads. + * + * The dispatcher creates a session for each client (using SID cookies). In + * each session, a session context is created using the context constructor. + * Each controller is instanciated in the session using the controller + * constructor added with add_controller. + */ +struct dispatcher_t { + + /** + * Register a controller to the dispatcher. + * + * The first controller added serves as default controller. Client's + * get redirected to it if no other controller matches. + * + * @param constructor constructor function to the conntroller + * @param param param to pass to constructor + */ + void (*add_controller)(dispatcher_t *this, + controller_constructor_t constructor, void *param); + + /** + * @brief Add a filter to the dispatcher. + * + * @param constructor constructor to create filter in session + * @param param param to pass to constructor + */ + void (*add_filter)(dispatcher_t *this, + filter_constructor_t constructor, void *param); + + /** + * Start with dispatching. + * + * Instanciate a constant thread pool and start dispatching requests. + * + * @param threads number of dispatching threads + */ + void (*run)(dispatcher_t *this, int threads); + + /** + * Wait for a relevant signal action. + * + */ + void (*waitsignal)(dispatcher_t *this); + + /** + * Destroy the dispatcher_t. + */ + void (*destroy) (dispatcher_t *this); +}; + +/** + * Create a dispatcher. + * + * The context constructor is invoked to create a session context for + * each session. + * + * @param socket FastCGI socket path, NULL for dynamic + * @param debug no stripping, no compression, timing information + * @param timeout session timeout + * @param constructor construction function for session context + * @param param parameter to supply to context constructor + */ +dispatcher_t *dispatcher_create(char *socket, bool debug, int timeout, + context_constructor_t constructor, void *param); + +#endif /* DISPATCHER_H_ @} */ diff --git a/src/libfast/filter.h b/src/libfast/filter.h new file mode 100644 index 000000000..614a2ef58 --- /dev/null +++ b/src/libfast/filter.h @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2008 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id$ + */ + +/* + * @defgroup filter filter + * @{ @ingroup libfast + */ + +#ifndef FILTER_H_ +#define FILTER_H_ + +#include "request.h" +#include "context.h" +#include "controller.h" + +typedef struct filter_t filter_t; + +/** + * Constructor function for a filter + * + * @param context session specific context + * @param param user supplied param + */ +typedef filter_t *(*filter_constructor_t)(context_t* context, void *param); + +/** + * Filter interface, to be implemented by users filters. + */ +struct filter_t { + + /** + * Called before the controller handles the request. + * + * @param request HTTP request + * @param p1 first parameter + * @param p2 second parameter + * @param p3 third parameter + * @param p4 forth parameter + * @param p5 fifth parameter + * @return TRUE to continue request handling + */ + bool (*run)(filter_t *this, request_t *request, + char *p0, char *p1, char *p2, char *p3, char *p4, char *p5); + + /** + * Destroy the filter instance. + */ + void (*destroy) (filter_t *this); +}; + +#endif /* FILTER_H_ @} */ diff --git a/src/libfast/request.c b/src/libfast/request.c new file mode 100644 index 000000000..ec022d41e --- /dev/null +++ b/src/libfast/request.c @@ -0,0 +1,447 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: request.c 3531 2008-03-06 09:50:56Z martin $ + */ + +#define _GNU_SOURCE + +#include "request.h" + +#include <library.h> +#include <debug.h> +#include <stdlib.h> +#include <string.h> +#include <pthread.h> +#include <ClearSilver/ClearSilver.h> + +typedef struct private_request_t private_request_t; + +/** + * private data of the task manager + */ +struct private_request_t { + + /** + * public functions + */ + request_t public; + + /** + * FastCGI request object + */ + FCGX_Request req; + + /** + * length of the req.envp array + */ + int req_env_len; + + /** + * ClearSilver CGI Kit context + */ + CGI *cgi; + + /** + * ClearSilver HDF dataset for this request + */ + HDF *hdf; + + /** + * close the session? + */ + bool closed; + + /** + * reference count + */ + refcount_t ref; +}; + +/** + * key to a the threads "this" request, used for ClearSilver cgiwrap callbacks. + * ClearSilver cgiwrap is not threadsave, so we use a private + * context for each thread. + */ +static pthread_key_t this_key; + +/** + * control variable for pthread_once + */ +pthread_once_t once = PTHREAD_ONCE_INIT; + +/** + * fcgiwrap read callback + */ +static int read_cb(void *null, char *buf, int size) +{ + private_request_t *this = (private_request_t*)pthread_getspecific(this_key); + + return FCGX_GetStr(buf, size, this->req.in); +} + +/** + * fcgiwrap writef callback + */ +static int writef_cb(void *null, const char *format, va_list args) +{ + private_request_t *this = (private_request_t*)pthread_getspecific(this_key); + + FCGX_VFPrintF(this->req.out, format, args); + return 0; +} +/** + * fcgiwrap write callback + */ +static int write_cb(void *null, const char *buf, int size) +{ + private_request_t *this = (private_request_t*)pthread_getspecific(this_key); + + return FCGX_PutStr(buf, size, this->req.out); +} + +/** + * fcgiwrap getenv callback + */ +static char *getenv_cb(void *null, const char *key) +{ + char *value; + private_request_t *this = (private_request_t*)pthread_getspecific(this_key); + + value = FCGX_GetParam(key, this->req.envp); + return value ? strdup(value) : NULL; +} + +/** + * fcgiwrap getenv callback + */ +static int putenv_cb(void *null, const char *key, const char *value) +{ + /* not supported */ + return 1; +} + +/** + * fcgiwrap iterenv callback + */ +static int iterenv_cb(void *null, int num, char **key, char **value) +{ + *key = NULL; + *value = NULL; + private_request_t *this = (private_request_t*)pthread_getspecific(this_key); + if (num < this->req_env_len) + { + char *eq; + + eq = strchr(this->req.envp[num], '='); + if (eq) + { + *key = strndup(this->req.envp[num], eq - this->req.envp[num]); + *value = strdup(eq + 1); + } + if (*key == NULL || *value == NULL) + { + free(*key); + free(*value); + return 1; + } + } + return 0; +} + +/** + * Implementation of request_t.get_cookie. + */ +static char* get_cookie(private_request_t *this, char *name) +{ + return hdf_get_valuef(this->hdf, "Cookie.%s", name); +} + +/** + * Implementation of request_t.get_path. + */ +static char* get_path(private_request_t *this) +{ + char * path = FCGX_GetParam("PATH_INFO", this->req.envp); + return path ? path : ""; +} + +/** + * Implementation of request_t.get_host. + */ +static char* get_host(private_request_t *this) +{ + char *addr = FCGX_GetParam("REMOTE_ADDR", this->req.envp); + return addr ? addr : ""; +} + +/** + * Implementation of request_t.get_user_agent. + */ +static char* get_user_agent(private_request_t *this) +{ + char *agent = FCGX_GetParam("HTTP_USER_AGENT", this->req.envp); + return agent ? agent : ""; +} + +/** + * Implementation of request_t.get_post_data. + */ +static char* get_query_data(private_request_t *this, char *name) +{ + return hdf_get_valuef(this->hdf, "Query.%s", name); +} + +/** + * Implementation of request_t.add_cookie. + */ +static void add_cookie(private_request_t *this, char *name, char *value) +{ + pthread_setspecific(this_key, this); + cgi_cookie_set (this->cgi, name, value, + FCGX_GetParam("SCRIPT_NAME", this->req.envp), + NULL, NULL, 0, 0); +} + +/** + * Implementation of request_t.redirect. + */ +static void redirect(private_request_t *this, char *fmt, ...) +{ + va_list args; + + FCGX_FPrintF(this->req.out, "Status: 303 See Other\n"); + FCGX_FPrintF(this->req.out, "Location: %s%s", + FCGX_GetParam("SCRIPT_NAME", this->req.envp), + *fmt == '/' ? "" : "/"); + va_start(args, fmt); + FCGX_VFPrintF(this->req.out, fmt, args); + va_end(args); + FCGX_FPrintF(this->req.out, "\n\n"); +} + +/** + * Implementation of request_t.to_referer. + */ +static void to_referer(private_request_t *this) +{ + FCGX_FPrintF(this->req.out, "Status: 303 See Other\n"); + FCGX_FPrintF(this->req.out, "Location: %s\n\n", + FCGX_GetParam("HTTP_REFERER", this->req.envp)); +} + +/** + * Implementation of request_t.get_base. + */ +static char* get_base(private_request_t *this) +{ + return FCGX_GetParam("SCRIPT_NAME", this->req.envp); +} + +/** + * Implementation of request_t.session_closed. + */ +static bool session_closed(private_request_t *this) +{ + return this->closed; +} + +/** + * Implementation of request_t.close_session. + */ +static void close_session(private_request_t *this) +{ + this->closed = TRUE; +} + +/** + * Implementation of request_t.serve. + */ +static void serve(private_request_t *this, char *headers, chunk_t chunk) +{ + FCGX_FPrintF(this->req.out, "%s\n\n", headers); + + FCGX_PutStr(chunk.ptr, chunk.len, this->req.out); +} + +/** + * Implementation of request_t.render. + */ +static void render(private_request_t *this, char *template) +{ + NEOERR* err; + + pthread_setspecific(this_key, this); + err = cgi_display(this->cgi, template); + if (err) + { + cgi_neo_error(this->cgi, err); + nerr_log_error(err); + } + return; +} + +/** + * Implementation of request_t.streamf. + */ +static int streamf(private_request_t *this, char *format, ...) +{ + va_list args; + int written; + + va_start(args, format); + written = FCGX_VFPrintF(this->req.out, format, args); + va_end(args); + if (written >= 0 && + FCGX_FFlush(this->req.out) == -1) + { + return -1; + } + return written; +} + +/** + * Implementation of request_t.set. + */ +static void set(private_request_t *this, char *key, char *value) +{ + hdf_set_value(this->hdf, key, value); +} + +/** + * Implementation of request_t.setf. + */ +static void setf(private_request_t *this, char *format, ...) +{ + va_list args; + + va_start(args, format); + hdf_set_valuevf(this->hdf, format, args); + va_end(args); +} + +/** + * Implementation of request_t.get_ref. + */ +static request_t* get_ref(private_request_t *this) +{ + ref_get(&this->ref); + return &this->public; +} + +/** + * Implementation of request_t.destroy + */ +static void destroy(private_request_t *this) +{ + if (ref_put(&this->ref)) + { + pthread_setspecific(this_key, this); + cgi_destroy(&this->cgi); + FCGX_Finish_r(&this->req); + free(this); + } +} + +/** + * This initialization method is guaranteed to run only once + * for all threads. + */ +static void init(void) +{ + cgiwrap_init_emu(NULL, read_cb, writef_cb, write_cb, + getenv_cb, putenv_cb, iterenv_cb); + pthread_key_create(&this_key, NULL); +} + +/* + * see header file + */ +request_t *request_create(int fd, bool debug) +{ + NEOERR* err; + private_request_t *this = malloc_thing(private_request_t); + bool failed = FALSE; + + pthread_cleanup_push(free, this); + if (FCGX_InitRequest(&this->req, fd, 0) != 0 || + FCGX_Accept_r(&this->req) != 0) + { + failed = TRUE; + } + pthread_cleanup_pop(failed); + if (failed) + { + return NULL; + } + + this->public.get_path = (char*(*)(request_t*))get_path; + this->public.get_base = (char*(*)(request_t*))get_base; + this->public.get_host = (char*(*)(request_t*))get_host; + this->public.get_user_agent = (char*(*)(request_t*))get_user_agent; + this->public.add_cookie = (void(*)(request_t*, char *name, char *value))add_cookie; + this->public.get_cookie = (char*(*)(request_t*,char*))get_cookie; + this->public.get_query_data = (char*(*)(request_t*, char *name))get_query_data; + this->public.session_closed = (bool(*)(request_t*))session_closed; + this->public.close_session = (void(*)(request_t*))close_session; + this->public.redirect = (void(*)(request_t*, char *fmt,...))redirect; + this->public.to_referer = (void(*)(request_t*))to_referer; + this->public.render = (void(*)(request_t*,char*))render; + this->public.streamf = (int(*)(request_t*, char *format, ...))streamf; + this->public.serve = (void(*)(request_t*,char*,chunk_t))serve; + this->public.set = (void(*)(request_t*, char *, char*))set; + this->public.setf = (void(*)(request_t*, char *format, ...))setf; + this->public.get_ref = (request_t*(*)(request_t*))get_ref; + this->public.destroy = (void(*)(request_t*))destroy; + + pthread_once(&once, init); + pthread_setspecific(this_key, this); + + this->ref = 1; + this->closed = FALSE; + this->req_env_len = 0; + while (this->req.envp[this->req_env_len] != NULL) + { + this->req_env_len++; + } + + err = hdf_init(&this->hdf); + if (!err) + { + hdf_set_value(this->hdf, "base", get_base(this)); + hdf_set_value(this->hdf, "Config.NoCache", "true"); + if (!debug) + { + hdf_set_value(this->hdf, "Config.TimeFooter", "0"); + hdf_set_value(this->hdf, "Config.CompressionEnabled", "1"); + hdf_set_value(this->hdf, "Config.WhiteSpaceStrip", "2"); + } + + err = cgi_init(&this->cgi, this->hdf); + if (!err) + { + err = cgi_parse(this->cgi); + if (!err) + { + return &this->public; + } + cgi_destroy(&this->cgi); + } + } + nerr_log_error(err); + FCGX_Finish_r(&this->req); + free(this); + return NULL; +} + diff --git a/src/libfast/request.h b/src/libfast/request.h new file mode 100644 index 000000000..b0d5bd89c --- /dev/null +++ b/src/libfast/request.h @@ -0,0 +1,186 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: request.h 3531 2008-03-06 09:50:56Z martin $ + */ + +/** + * @defgroup request request + * @{ @ingroup libfast + */ + +#ifndef REQUEST_H_ +#define REQUEST_H_ + +#include <fcgiapp.h> +#include <library.h> + +typedef struct request_t request_t; + +/** + * A HTTP request, encapsulates FCGX_Request. + * + * The response is also handled through the request object. + */ +struct request_t { + + /** + * Add a cookie to the reply (Set-Cookie header). + * + * @param name name of the cookie to set + * @param value value of the cookie + */ + void (*add_cookie)(request_t *this, char *name, char *value); + + /** + * Get a cookie the client sent in the request. + * + * @param name name of the cookie + * @return cookie value, NULL if no such cookie found + */ + char* (*get_cookie)(request_t *this, char *name); + + /** + * Get the request path relative to the application. + * + * @return path + */ + char* (*get_path)(request_t *this); + + /** + * Get the base path of the application. + * + * @return base path + */ + char* (*get_base)(request_t *this); + + /** + * Get the remote host address of this request. + * + * @return host address as string + */ + char* (*get_host)(request_t *this); + + /** + * Get the user agent string. + * + * @return user agent string + */ + char* (*get_user_agent)(request_t *this); + + /** + * Get a post/get variable included in the request. + * + * @param name name of the POST/GET variable + * @return value, NULL if not found + */ + char* (*get_query_data)(request_t *this, char *name); + + /** + * Close the session and it's context after handling. + */ + void (*close_session)(request_t *this); + + /** + * Has the session been closed by close_session()? + * + * @return TRUE if session has been closed + */ + bool (*session_closed)(request_t *this); + + /** + * Redirect the client to another location. + * + * @param fmt location format string + * @param ... variable argument for fmt + */ + void (*redirect)(request_t *this, char *fmt, ...); + + /** + * Redirect the client to the referer. + */ + void (*to_referer)(request_t *this); + + /** + * Set a template value. + * + * @param key key to set + * @param value value to set key to + */ + void (*set)(request_t *this, char *key, char *value); + + /** + * Set a template value using format strings. + * + * Format string is in the form "key=value", where printf like format + * substitution occurs over the whole string. + * + * @param format printf like format string + * @param ... variable argument list + */ + void (*setf)(request_t *this, char *format, ...); + + /** + * Render a template. + * + * The render() function additionally sets a HDF variable "base" + * which points to the root of the web application and allows to point to + * other targets without to worry about path location. + * + * @param template clearsilver template file location + */ + void (*render)(request_t *this, char *template); + + /** + * Stream a format string to the client. + * + * Stream is not closed and may be called multiple times to allow + * server-push functionality. + * + * @param format printf like format string + * @param ... argmuent list to format string + * @return number of streamed bytes, < 0 if stream closed + */ + int (*streamf)(request_t *this, char *format, ...); + + /** + * Serve a request with headers and a body. + * + * @param headers HTTP headers, \n separated + * @param chunk body to write to output + */ + void (*serve)(request_t *this, char *headers, chunk_t chunk); + + /** + * Increase the reference count to the stream. + * + * @return this with increased refcount + */ + request_t* (*get_ref)(request_t *this); + + /** + * Destroy the request_t. + */ + void (*destroy) (request_t *this); +}; + +/** + * Create a request from the fastcgi struct. + * + * @param fd file descripter opened with FCGX_OpenSocket + * @param debug no stripping, no compression, timing information + */ +request_t *request_create(int fd, bool debug); + +#endif /* REQUEST_H_ @} */ diff --git a/src/libfast/session.c b/src/libfast/session.c new file mode 100644 index 000000000..cb2e736b8 --- /dev/null +++ b/src/libfast/session.c @@ -0,0 +1,219 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: session.c 4060 2008-06-11 14:11:01Z martin $ + */ + +#define _GNU_SOURCE + +#include "session.h" + +#include <string.h> +#include <fcgiapp.h> +#include <stdio.h> + +#include <utils/linked_list.h> + +typedef struct private_session_t private_session_t; + +/** + * private data of the task manager + */ +struct private_session_t { + + /** + * public functions + */ + session_t public; + + /** + * session ID + */ + char *sid; + + /** + * list of controller instances controller_t + */ + linked_list_t *controllers; + + /** + * list of filter instances filter_t + */ + linked_list_t *filters; + + /** + * user defined session context + */ + context_t *context; +}; + +/** + * Implementation of session_t.add_controller. + */ +static void add_controller(private_session_t *this, controller_t *controller) +{ + this->controllers->insert_last(this->controllers, controller); +} + +/** + * Implementation of session_t.add_filter. + */ +static void add_filter(private_session_t *this, filter_t *filter) +{ + this->filters->insert_last(this->filters, filter); +} + +/** + * Create a session ID and a cookie + */ +static void create_sid(private_session_t *this, request_t *request) +{ + char buf[16]; + chunk_t chunk = chunk_from_buf(buf); + rng_t *rng; + + rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK); + if (rng) + { + rng->get_bytes(rng, sizeof(buf), buf); + this->sid = chunk_to_hex(chunk, NULL, FALSE).ptr; + request->add_cookie(request, "SID", this->sid); + rng->destroy(rng); + } +} + +/** + * run all registered filters + */ +static bool run_filter(private_session_t *this, request_t *request, char *p0, + char *p1, char *p2, char *p3, char *p4, char *p5) +{ + enumerator_t *enumerator; + filter_t *filter; + + enumerator = this->filters->create_enumerator(this->filters); + while (enumerator->enumerate(enumerator, &filter)) + { + if (!filter->run(filter, request, p0, p1, p2, p3, p4, p5)) + { + enumerator->destroy(enumerator); + return FALSE; + } + } + enumerator->destroy(enumerator); + return TRUE; +} + +/** + * Implementation of session_t.process. + */ +static void process(private_session_t *this, request_t *request) +{ + char *pos, *start, *param[6] = {NULL, NULL, NULL, NULL, NULL, NULL}; + enumerator_t *enumerator; + bool handled = FALSE; + controller_t *current; + int i = 0; + + if (this->sid == NULL) + { + create_sid(this, request); + } + + start = request->get_path(request); + if (start) + { + if (*start == '/') + { + start++; + } + while ((pos = strchr(start, '/')) != NULL && i < 5) + { + param[i++] = strndupa(start, pos - start); + start = pos + 1; + } + param[i] = strdupa(start); + + if (run_filter(this, request, param[0], param[1], param[2], param[3], + param[4], param[5])) + { + enumerator = this->controllers->create_enumerator(this->controllers); + while (enumerator->enumerate(enumerator, ¤t)) + { + if (streq(current->get_name(current), param[0])) + { + current->handle(current, request, param[1], param[2], + param[3], param[4], param[5]); + handled = TRUE; + break; + } + } + enumerator->destroy(enumerator); + } + else + { + handled = TRUE; + } + } + if (!handled) + { + if (this->controllers->get_first(this->controllers, + (void**)¤t) == SUCCESS) + { + request->redirect(request, current->get_name(current)); + } + } +} + +/** + * Implementation of session_t.get_sid. + */ +static char* get_sid(private_session_t *this) +{ + return this->sid; +} + +/** + * Implementation of session_t.destroy + */ +static void destroy(private_session_t *this) +{ + this->controllers->destroy_offset(this->controllers, offsetof(controller_t, destroy)); + this->filters->destroy_offset(this->filters, offsetof(filter_t, destroy)); + DESTROY_IF(this->context); + free(this->sid); + free(this); +} + +/* + * see header file + */ +session_t *session_create(context_t *context) +{ + private_session_t *this = malloc_thing(private_session_t); + + this->public.add_controller = (void(*)(session_t*, controller_t*))add_controller; + this->public.add_filter = (void(*)(session_t*, filter_t*))add_filter; + this->public.process = (void(*)(session_t*,request_t*))process; + this->public.get_sid = (char*(*)(session_t*))get_sid; + this->public.destroy = (void(*)(session_t*))destroy; + + this->sid = NULL; + this->controllers = linked_list_create(); + this->filters = linked_list_create(); + this->context = context; + + return &this->public; +} + diff --git a/src/libfast/session.h b/src/libfast/session.h new file mode 100644 index 000000000..0df5d5482 --- /dev/null +++ b/src/libfast/session.h @@ -0,0 +1,80 @@ +/* + * Copyright (C) 2007 Martin Willi + * Hochschule fuer Technik Rapperswil + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * $Id: session.h 3519 2008-03-02 12:14:34Z martin $ + */ + +/** + * @defgroup session session + * @{ @ingroup libfast + */ + +#ifndef SESSION_H_ +#define SESSION_H_ + +#include "request.h" +#include "controller.h" +#include "filter.h" + +typedef struct session_t session_t; + +/** + * Session handling class, instanciated for each user session. + */ +struct session_t { + + /** + * Get the session ID of the session. + * + * @return session ID + */ + char* (*get_sid)(session_t *this); + + /** + * Add a controller instance to the session. + * + * @param controller controller to add + */ + void (*add_controller)(session_t *this, controller_t *controller); + + /** + * @brief Add a filter instance to the session. + * + * @param filter filter to add + */ + void (*add_filter)(session_t *this, filter_t *filter); + + /** + * Process a request in this session. + * + * @param request request to process + */ + void (*process)(session_t *this, request_t *request); + + /** + * Destroy the session_t. + * + * @param this calling object + */ + void (*destroy) (session_t *this); +}; + +/** + * Create a session new session. + * + * @param context user defined session context instance + */ +session_t *session_create(context_t *context); + +#endif /* SESSION_H_ @} */ |