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path: root/include/sitecing/configuration.h
authorMichael Krelin <hacker@klever.net>2005-01-29 21:21:05 (UTC)
committer Michael Krelin <hacker@klever.net>2005-01-29 21:21:05 (UTC)
commitce1f37aae46ea95020d7b865f7a80e8abdfad0d8 (patch) (side-by-side diff)
tree4964383ab8cd7e6d8ea821f1a615d1bbcf98dad8 /include/sitecing/configuration.h
parent3c75c860fc1ad5b3f5185e23ec6f438dd2528958 (diff)
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initial commit into repository0.0
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diff --git a/include/sitecing/configuration.h b/include/sitecing/configuration.h
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+#ifndef __SITECING_CONFIGURATION_H
+#define __SITECING_CONFIGURATION_H
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string>
+#include <list>
+#include <map>
+#include <pcre++.h>
+
+/**
+ * @file
+ * @brief Classes related to configuration.
+ */
+
+namespace sitecing {
+ using namespace std;
+
+ class configuration;
+
+ /**
+ * The config options container class.
+ */
+ class config_options {
+ public:
+ /**
+ * The flags enumeration.
+ */
+ enum _flags {
+ /**
+ * Skeleton has been specified in the context.
+ * @see skeleton
+ */
+ flag_skeleton = 0x0001,
+ /**
+ * CPPFLAGS have been specified in the context
+ * @see cpp_flags
+ */
+ flag_cpp_flags = 0x0002,
+ /**
+ * LDFLAGS have been specified in the context.
+ * @see ld_flags
+ */
+ flag_ld_flags = 0x0004,
+ /**
+ * Enforced intermediate dependencies have been specified in the
+ * context.
+ * @see internediate_deps
+ */
+ flag_intermediate_deps = 0x0008,
+ /**
+ * Enforced .so dependencies have been specified in the context.
+ * @see so_deps
+ */
+ flag_so_deps = 0x0010,
+ /**
+ * Whether components should be built specified in the context.
+ * @see build
+ */
+ flag_build = 0x0020,
+ /**
+ * Whether to track down cpp dependencies has been specified in
+ * the context.
+ * @see cpp_deps
+ */
+ flag_cpp_deps = 0x0040,
+ /**
+ * The exception handler has been specified in the context.
+ * @see exception_handler
+ */
+ flag_exception_handler = 0x0080,
+ /**
+ * Action handlers have been specified in the context.
+ * @see action_handlers
+ */
+ flag_action_handlers = 0x0100,
+ /**
+ * HTTP status handerls have been specified in the context.
+ * @see http_status_handlers
+ */
+ flag_http_status_handlers = 0x0200,
+ /**
+ * The files to be built are specified in the context.
+ * @see auto_build_files
+ */
+ flag_auto_build_files = 0x0400
+ };
+ /**
+ * The flags specifying what parts of configuration have been
+ * specified for the context.
+ */
+ int flags;
+
+ /**
+ * The skeleton for building components.
+ */
+ string skeleton;
+ /**
+ * The flags to pass to compiler.
+ */
+ list<string> cpp_flags;
+ /**
+ * The flags to pass to linker.
+ */
+ list<string> ld_flags;
+ /**
+ * Whether to build inexstent and outdated components.
+ */
+ bool build;
+ /**
+ * Whether to track cpp dependencies.
+ */
+ bool cpp_deps;
+ /**
+ * The component handling caught exceptions.
+ */
+ string exception_handler;
+ /**
+ * Enforced intermediate dependencies.
+ */
+ list<string> intermediate_deps;
+ /**
+ * Enforced depencies for .so objects.
+ */
+ list<string> so_deps;
+ /**
+ * The action handler type.
+ */
+ struct action_handler_t {
+ /**
+ * The regexp to check request against.
+ */
+ string s_regex;
+ /**
+ * Precompiled regex.
+ */
+ pcrepp::Pcre regex;
+ /**
+ * The action handler component.
+ */
+ string action;
+ /**
+ * Arguments for the action hander coponent.
+ */
+ list<string> args;
+
+ action_handler_t(const string& s,const string& a)
+ : s_regex(s), regex(s), action(a) { }
+ action_handler_t(const action_handler_t& s)
+ : s_regex(s.s_regex), regex(s.regex), action (s.action), args(s.args) { }
+ };
+ /**
+ * Type for the list of action handlers.
+ */
+ typedef list<action_handler_t> action_handlers_t;
+ /**
+ * The list of action handlers.
+ */
+ action_handlers_t action_handlers;
+ /**
+ * Type for the map of HTTP status handler components.
+ */
+ typedef map<string,string> http_status_handlers_t;
+ /**
+ * The map of HTTP status handler components.
+ */
+ http_status_handlers_t http_status_handlers;
+ /**
+ * Files to be built automatically.
+ */
+ list<string> auto_build_files;
+
+ config_options()
+ : flags(0) { }
+
+ /**
+ * Look up if there is an action handler for the target defined.
+ * @param target the target component.
+ * @return the pointer to handler or zero.
+ */
+ action_handler_t *lookup_action_handler(const string& target);
+ /**
+ * Look up if there is a handler defined for the HTTP status.
+ * @param status HTTP status
+ * @return the handler component.
+ */
+ string lookup_http_status_handler(const string& status);
+ /**
+ * Check whether the file should be build automatically.
+ * @param fn file name.
+ * @param rv reference to the boolean where the answer should go.
+ * @return true if we know the answer.
+ */
+ bool match_autobuild_files(const char *fn,bool &rv);
+ };
+
+ /**
+ * Configuration data container for the configuration loaded from disk file.
+ */
+ class loaded_options : public config_options {
+ public:
+ /**
+ * The file where configuration originates from.
+ */
+ string source_file;
+ /**
+ * The stat structure for the source file as it was when we have
+ * loaded it.
+ */
+ struct stat st;
+
+ /**
+ * See if the data is still valid.
+ * @return true if yes.
+ */
+ bool is_valid();
+
+ /**
+ * Load the configuration file.
+ * @param config the main configuration container.
+ * @param the configuration file.
+ */
+ void parse(configuration *config,const string& cfile);
+ };
+
+ /**
+ * The main configuration container.
+ */
+ class configuration {
+ public:
+ /**
+ * @todo TODO:: document me.
+ */
+ bool autobuild;
+ /**
+ * The flags enumeration.
+ */
+ enum _flags {
+ /**
+ * Was the source root specified?
+ * @see root_source
+ */
+ flag_root_source = 0x00000001,
+ /**
+ * Was the root for intermediate files specified?
+ * @see root_intermediate
+ */
+ flag_root_intermediate = 0x00000002,
+ /**
+ * Was the root for the resulting .so files specified?
+ * @see root_so
+ */
+ flag_root_so = 0x00000004,
+ /**
+ * Was the socket to listen to specified?
+ * @see listen_socket
+ */
+ flag_listen_socket = 0x00000008,
+ /**
+ * Was the per-dir config file name specified.
+ * @see rc_file_name
+ */
+ flag_rc_file_name = 0x00000010,
+ /**
+ * Was the minimum number of child processes specified?
+ * @see min_children
+ */
+ flag_min_children = 0x00000020,
+ /**
+ * Was the maximum number of child processes specified?
+ * @see max_children
+ */
+ flag_max_children = 0x00000040,
+ /**
+ * Was the minimum number of spare child processes specified?
+ * @see min_spare_children
+ */
+ flag_min_spare_children = 0x00000080,
+ /**
+ * Was he maximum number of spare child processes specified?
+ * @see max_spare_children
+ */
+ flag_max_spare_children = 0x00000100,
+ /**
+ * Was the number of requests to handle per child process
+ * specified?
+ * @see requests_per_child
+ */
+ flag_requests_per_child = 0x00000200,
+ /**
+ * Was the multiprocess node (or it's absences) specified?
+ * @see multi_process
+ */
+ flag_multi_process = 0x00000400,
+ /**
+ * Was the user specified?
+ * @see user
+ */
+ flag_user = 0x00000800,
+ /**
+ * @Was the group specified?
+ * @see group
+ */
+ flag_group = 0x00001000,
+ /**
+ * Was the root to change to specified?
+ * @see chroot
+ */
+ flag_chroot = 0x00002000,
+ /**
+ * Was the file for storing PID specified?
+ * @see pidfile
+ */
+ flag_pid_file = 0x00004000,
+ /**
+ * Was it specified wether we should daemonize the process?
+ * @see daemonize
+ */
+ flag_daemonize = 0x00008000
+ };
+ /**
+ * The flags specifying what parts of the configuration has been
+ * loaded into the object.
+ */
+ long flags;
+
+ /**
+ * The root for the components source code.
+ */
+ string root_source;
+ /**
+ * The root for intermediate files.
+ */
+ string root_intermediate;
+ /**
+ * The root for .so files.
+ */
+ string root_so;
+ /**
+ * Socket to bind to
+ */
+ string listen_socket;
+ /**
+ * per-dir config file name.
+ */
+ string rc_file_name;
+ /**
+ * The minimum number of child processes in multiprocess mode.
+ */
+ int min_children;
+ /**
+ * The maxium number of child processes in multiprocess mode.
+ */
+ int max_children;
+ /**
+ * The minimum number of spare chidren in multiprocess mode.
+ */
+ int min_spare_children;
+ /**
+ * The maximum number of spare children in multiprocess mode.
+ */
+ int max_spare_children;
+ /**
+ * The number of requests the child process should handle before
+ * exiting.
+ */
+ int requests_per_child;
+ /**
+ * Whether we should run in multiprocess mode or not.
+ */
+ bool multi_process;
+ /**
+ * User to change to.
+ */
+ string user;
+ /**
+ * Group to set to.
+ */
+ string group;
+ /**
+ * Directory to change root to.
+ */
+ string chroot;
+ /**
+ * The file to store PID into.
+ */
+ string pid_file;
+ /**
+ * Whether we should fork into background.
+ */
+ bool daemonize;
+
+ typedef map<string,config_options> specs_t;
+ /**
+ * The local config options map.
+ */
+ specs_t specs;
+ typedef map<string,loaded_options> loaded_specs_t;
+ /**
+ * The local config options as specified in per-dir config files
+ * map.
+ */
+ loaded_specs_t loaded_specs;
+
+ configuration();
+ /**
+ * @param cfile the configuration file.
+ * @param ab @todo TODO:: document me
+ */
+ configuration(const string& cfile,bool ab=false);
+
+ /**
+ * Parse the configuration file.
+ * @param cfile the configuration file.
+ */
+ void parse(const string& cfile);
+
+ /**
+ * Fetch the reference to options for the very root.
+ */
+ config_options& root_options() { return specs[""]; }
+ /**
+ * Lookup where the certain config option for the target lies in.
+ * @param target the target component.
+ * @param flag the flag specifying the option we're looking for.
+ * @return the destination options continer or zero.
+ */
+ config_options* lookup_config(const string& target,int flag);
+ /**
+ * Lookup the action handler for the target.
+ * @param target the target request.
+ * @return the action handler or zero.
+ */
+ config_options::action_handler_t *lookup_action_handler(const string& target);
+ /**
+ * Lookup the HTPP status handler for the target.
+ * @param target the target.
+ * @param status the HTTP status.
+ * @return the handler component.
+ */
+ string lookup_http_status_handler(const string& target,const string& status);
+ /**
+ * Lookup the options loaded from per-dir config for the target
+ * @param target the target.
+ * @return options container or zero.
+ */
+ loaded_options* lookup_loaded_options(const string& target);
+ /**
+ * Check whether the components for the target should be prebuilt.
+ * @param target the target.
+ * @param fn file name.
+ * @return true if yes.
+ */
+ bool match_autobuild_files(const string& target,const char *fn);
+ };
+
+}
+
+#endif /* __SITECING_CONFIGURATION_H */