+++ /dev/null
-/* $Id: proxy.h,v 1.3 2004-03-30 18:14:13 adam Exp $
- Copyright (c) 1998-2004, Index Data.
-
-This file is part of the yaz-proxy.
-
-Zebra 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, or (at your option) any later
-version.
-
-Zebra 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.
-
-You should have received a copy of the GNU General Public License
-along with Zebra; see the file LICENSE.proxy. If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
- */
-
-#if HAVE_GETTIMEOFDAY
-#include <sys/time.h>
-#endif
-#include <yaz++/z-assoc.h>
-#include <yaz++/z-query.h>
-#include <yaz++/z-databases.h>
-#include <yaz++/cql2rpn.h>
-#include <yaz/cql.h>
-#include <yaz++/proxy/bw.h>
-#if HAVE_XSLT
-#include <libxml/parser.h>
-#include <libxml/tree.h>
-#include <libxslt/xsltutils.h>
-#include <libxslt/transform.h>
-#endif
-
-class Yaz_Proxy;
-
-#define MAX_ZURL_PLEX 10
-
-#define PROXY_LOG_APDU_CLIENT 1
-#define PROXY_LOG_APDU_SERVER 2
-#define PROXY_LOG_REQ_CLIENT 4
-#define PROXY_LOG_REQ_SERVER 8
-
-struct Yaz_RecordCache_Entry;
-
-class YAZ_EXPORT Yaz_ProxyConfig {
-public:
- Yaz_ProxyConfig();
- ~Yaz_ProxyConfig();
- int read_xml(const char *fname);
-
- int get_target_no(int no,
- const char **name,
- const char **url,
- int *limit_bw,
- int *limit_pdu,
- int *limit_req,
- int *target_idletime,
- int *client_idletime,
- int *max_clients,
- int *keepalive_limit_bw,
- int *keepalive_limit_pdu,
- int *pre_init,
- const char **cql2rpn);
-
- void get_generic_info(int *log_mask, int *max_clients);
-
- void get_target_info(const char *name, const char **url,
- int *limit_bw, int *limit_pdu, int *limit_req,
- int *target_idletime, int *client_idletime,
- int *max_clients,
- int *keepalive_limit_bw, int *keepalive_limit_pdu,
- int *pre_init,
- const char **cql2rpn);
-
- int check_query(ODR odr, const char *name, Z_Query *query, char **addinfo);
- int check_syntax(ODR odr, const char *name,
- Odr_oid *syntax, Z_RecordComposition *comp,
- char **addinfo, char **stylesheet, char **schema);
- char *get_explain(ODR odr, const char *name, const char *db,
- int *len);
-private:
- void operator=(const Yaz_ProxyConfig &conf);
- int mycmp(const char *hay, const char *item, size_t len);
-#if HAVE_XSLT
- int check_schema(xmlNodePtr ptr, Z_RecordComposition *comp,
- const char *schema_identifier);
- xmlDocPtr m_docPtr;
- xmlNodePtr m_proxyPtr;
- void return_target_info(xmlNodePtr ptr, const char **url,
- int *limit_bw, int *limit_pdu, int *limit_req,
- int *target_idletime, int *client_idletime,
- int *keepalive_limit_bw, int *keepalive_limit_pdu,
- int *pre_init, const char **cql2rpn);
- void return_limit(xmlNodePtr ptr,
- int *limit_bw, int *limit_pdu, int *limit_req);
- int check_type_1(ODR odr, xmlNodePtr ptr, Z_RPNQuery *query,
- char **addinfo);
- xmlNodePtr find_target_node(const char *name, const char *db);
- xmlNodePtr find_target_db(xmlNodePtr ptr, const char *db);
- const char *get_text(xmlNodePtr ptr);
- int check_type_1_attributes(ODR odr, xmlNodePtr ptr,
- Z_AttributeList *attrs,
- char **addinfo);
- int check_type_1_structure(ODR odr, xmlNodePtr ptr, Z_RPNStructure *q,
- char **addinfo);
-#endif
- int m_copy;
- int match_list(int v, const char *m);
- int atoi_l(const char **cp);
-};
-
-class YAZ_EXPORT Yaz_RecordCache {
- public:
- Yaz_RecordCache ();
- ~Yaz_RecordCache ();
- void add (ODR o, Z_NamePlusRecordList *npr, int start, int hits);
-
- int lookup (ODR o, Z_NamePlusRecordList **npr, int start, int num,
- Odr_oid *syntax, Z_RecordComposition *comp);
- void clear();
-
- void copy_searchRequest(Z_SearchRequest *sr);
- void copy_presentRequest(Z_PresentRequest *pr);
- void set_max_size(int sz);
- private:
- NMEM m_mem;
- Yaz_RecordCache_Entry *m_entries;
- Z_SearchRequest *m_searchRequest;
- Z_PresentRequest *m_presentRequest;
- int match (Yaz_RecordCache_Entry *entry,
- Odr_oid *syntax, int offset,
- Z_RecordComposition *comp);
- int m_max_size;
-};
-
-/// Private class
-class YAZ_EXPORT Yaz_ProxyClient : public Yaz_Z_Assoc {
- friend class Yaz_Proxy;
- Yaz_ProxyClient(IYaz_PDU_Observable *the_PDU_Observable,
- Yaz_Proxy *parent);
- ~Yaz_ProxyClient();
- void recv_GDU(Z_GDU *apdu, int len);
- void recv_Z_PDU(Z_APDU *apdu, int len);
- void recv_HTTP_response(Z_HTTP_Response *apdu, int len);
- IYaz_PDU_Observer* sessionNotify
- (IYaz_PDU_Observable *the_PDU_Observable, int fd);
- void shutdown();
- Yaz_Proxy *m_server;
- void failNotify();
- void timeoutNotify();
- void connectNotify();
- int send_to_target(Z_APDU *apdu);
- const char *get_session_str();
- char *m_cookie;
- Yaz_ProxyClient *m_next;
- Yaz_ProxyClient **m_prev;
- int m_init_flag;
- Yaz_Z_Query *m_last_query;
- Yaz_Z_Databases m_last_databases;
- char *m_last_resultSetId;
- int m_last_ok;
- int m_last_resultCount;
- int m_sr_transform;
- int m_seqno;
- int m_waiting;
- int m_resultSetStartPoint;
- int m_bytes_sent;
- int m_bytes_recv;
- int m_pdu_recv;
- ODR m_init_odr;
- Z_APDU *m_initResponse;
- Z_Options *m_initResponse_options;
- Z_ProtocolVersion *m_initResponse_version;
- int m_initResponse_preferredMessageSize;
- int m_initResponse_maximumRecordSize;
- Yaz_RecordCache m_cache;
- void pre_init_client();
- int m_target_idletime;
- Yaz_Proxy *m_root;
-};
-
-
-/// Information Retrieval Proxy Server.
-class YAZ_EXPORT Yaz_Proxy : public Yaz_Z_Assoc {
- private:
- char *get_cookie(Z_OtherInformation **otherInfo);
- char *get_proxy(Z_OtherInformation **otherInfo);
- Yaz_ProxyClient *get_client(Z_APDU *apdu, const char *cookie,
- const char *proxy_host);
- Z_APDU *result_set_optimize(Z_APDU *apdu);
- void shutdown();
-
- Yaz_ProxyClient *m_client;
- IYaz_PDU_Observable *m_PDU_Observable;
- Yaz_ProxyClient *m_clientPool;
- Yaz_Proxy *m_parent;
- int m_seqno;
- int m_max_clients;
- int m_log_mask;
- int m_keepalive_limit_bw;
- int m_keepalive_limit_pdu;
- int m_client_idletime;
- int m_target_idletime;
- char *m_proxyTarget;
- char *m_default_target;
- char *m_proxy_authentication;
- long m_seed;
- char *m_optimize;
- int m_session_no; // sequence for each client session
- char m_session_str[30]; // session string (time:session_no)
- Yaz_ProxyConfig *m_config;
- char *m_config_fname;
- int m_bytes_sent;
- int m_bytes_recv;
- int m_bw_max;
- Yaz_bw m_bw_stat;
- int m_pdu_max;
- Yaz_bw m_pdu_stat;
- Z_GDU *m_bw_hold_PDU;
- int m_max_record_retrieve;
- void handle_max_record_retrieve(Z_APDU *apdu);
- void display_diagrecs(Z_DiagRec **pp, int num);
- Z_Records *create_nonSurrogateDiagnostics(ODR o, int error,
- const char *addinfo);
-
- Z_APDU *handle_query_validation(Z_APDU *apdu);
- Z_APDU *handle_query_transformation(Z_APDU *apdu);
-
- Z_APDU *handle_syntax_validation(Z_APDU *apdu);
- const char *load_balance(const char **url);
- int m_reconfig_flag;
- Yaz_ProxyConfig *check_reconfigure();
- int m_request_no;
- int m_invalid_session;
- int m_marcxml_flag;
-#if HAVE_XSLT
- xsltStylesheetPtr m_stylesheet_xsp;
-#else
- void *m_stylesheet_xsp;
-#endif
- int m_stylesheet_offset;
- Z_APDU *m_stylesheet_apdu;
- Z_NamePlusRecordList *m_stylesheet_nprl;
- char *m_schema;
- void convert_to_marcxml(Z_NamePlusRecordList *p);
- int convert_xsl(Z_NamePlusRecordList *p, Z_APDU *apdu);
- void convert_xsl_delay();
- Z_APDU *m_initRequest_apdu;
- int m_initRequest_preferredMessageSize;
- int m_initRequest_maximumRecordSize;
- Z_Options *m_initRequest_options;
- Z_ProtocolVersion *m_initRequest_version;
- NMEM m_initRequest_mem;
- Z_APDU *m_apdu_invalid_session;
- NMEM m_mem_invalid_session;
- int send_PDU_convert(Z_APDU *apdu);
- ODR m_s2z_odr_init;
- ODR m_s2z_odr_search;
- int m_s2z_hit_count;
- int m_s2z_packing;
- char *m_s2z_database;
- Z_APDU *m_s2z_init_apdu;
- Z_APDU *m_s2z_search_apdu;
- Z_APDU *m_s2z_present_apdu;
- char *m_s2z_stylesheet;
- char *m_soap_ns;
- int send_to_srw_client_error(int error, const char *add);
- int send_to_srw_client_ok(int hits, Z_Records *records, int start);
- int send_http_response(int code);
- int send_srw_response(Z_SRW_PDU *srw_pdu);
- int send_srw_explain_response(Z_SRW_diagnostic *diagnostics,
- int num_diagnostics);
- int z_to_srw_diag(ODR o, Z_SRW_searchRetrieveResponse *srw_res,
- Z_DefaultDiagFormat *ddf);
- int m_http_keepalive;
- const char *m_http_version;
- Yaz_cql2rpn m_cql2rpn;
-#if HAVE_GETTIMEOFDAY
- struct timeval m_time_tv;
-#endif
- void logtime();
- Z_ElementSetNames *mk_esn_from_schema(ODR o, const char *schema);
- Z_ReferenceId *m_referenceId;
- NMEM m_referenceId_mem;
-#define NO_SPARE_SOLARIS_FD 10
- int m_lo_fd[NO_SPARE_SOLARIS_FD];
- void low_socket_open();
- void low_socket_close();
- public:
- Yaz_Proxy(IYaz_PDU_Observable *the_PDU_Observable,
- Yaz_Proxy *parent = 0);
- ~Yaz_Proxy();
- void inc_request_no();
- void recv_GDU(Z_GDU *apdu, int len);
- void handle_incoming_HTTP(Z_HTTP_Request *req);
- void handle_incoming_Z_PDU(Z_APDU *apdu);
- IYaz_PDU_Observer* sessionNotify
- (IYaz_PDU_Observable *the_PDU_Observable, int fd);
- void failNotify();
- void timeoutNotify();
- void connectNotify();
- void markInvalid();
- const char *option(const char *name, const char *value);
- void set_default_target(const char *target);
- void set_proxy_authentication (const char *auth);
- char *get_proxy_target() { return m_proxyTarget; };
- char *get_session_str() { return m_session_str; };
- void set_max_clients(int m) { m_max_clients = m; };
- void set_client_idletime (int t) { m_client_idletime = (t > 1) ? t : 600; };
- void set_target_idletime (int t) { m_target_idletime = (t > 1) ? t : 600; };
- int get_target_idletime () { return m_target_idletime; }
- int set_config(const char *name);
- void reconfig() { m_reconfig_flag = 1; }
- int send_to_client(Z_APDU *apdu);
- int server(const char *addr);
- void pre_init();
- int get_log_mask() { return m_log_mask; };
- int handle_init_response_for_invalid_session(Z_APDU *apdu);
-};
-
projects / yazpp-moved-to-github.git / blobdiff