X-Git-Url: http://git.indexdata.com/?p=yazproxy-moved-to-github.git;a=blobdiff_plain;f=src%2Fyaz-proxy-config.cpp;h=76259cf3b96288810fcab98fbf28f8c9448f1e53;hp=fc81b94daadaa2e99dfe1bbdf55a4ac6db77b16b;hb=2faeba3f61ac423a9c71222e9a15377724d8f0fa;hpb=d6baec0e7369dd5d01a2998efb3667e3deff6db2

diff --git a/src/yaz-proxy-config.cpp b/src/yaz-proxy-config.cpp
index fc81b94..76259cf 100644
--- a/src/yaz-proxy-config.cpp
+++ b/src/yaz-proxy-config.cpp
@@ -1,5 +1,5 @@
-/* $Id: yaz-proxy-config.cpp,v 1.14 2005-02-10 08:09:42 oleg Exp $
-   Copyright (c) 1998-2004, Index Data.
+/* $Id: yaz-proxy-config.cpp,v 1.19 2005-05-18 20:15:22 adam Exp $
+   Copyright (c) 1998-2005, Index Data.
 
 This file is part of the yaz-proxy.
 
@@ -20,18 +20,98 @@ Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  */
 
 #include <ctype.h>
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
 #include <yaz/log.h>
 #include "proxyp.h"
 
+
+class Yaz_ProxyModule {
+private:
+    void *m_dl_handle;                /* dlopen/close handle */
+    Yaz_ProxyModule_entry *m_entry;
+    Yaz_ProxyModule *m_next; 
+    void *m_user_handle;              /* user handle */
+public:
+    Yaz_ProxyModule(void *dl_handle, Yaz_ProxyModule_entry *ent,
+		    Yaz_ProxyModule *next);
+    ~Yaz_ProxyModule();
+    
+    Yaz_ProxyModule *get_next() { return m_next; };
+    int is_module(const char *name);
+    int authenticate(const char *target_name, void *element_ptr,
+		     const char *user, const char *group, const char *password);
+};
+
+int Yaz_ProxyModule::is_module(const char *type)
+{
+    if (!type || !strcmp(m_entry->module_name, type))
+	return 1;
+    return 0;
+}
+
+Yaz_ProxyModule::Yaz_ProxyModule(void *dl_handle, Yaz_ProxyModule_entry *ent,
+				 Yaz_ProxyModule *next)
+{
+    m_dl_handle = dl_handle;
+    m_entry = ent;
+    m_next = next;
+    m_user_handle = 0;
+    if (m_entry->int_version == 0)
+    {
+	struct Yaz_ProxyModule_int0 *int0 =
+	    reinterpret_cast<Yaz_ProxyModule_int0 *>(m_entry->fl);
+	if (int0->init)
+	    m_user_handle = (*int0->init)();
+    }
+}
+
+Yaz_ProxyModule::~Yaz_ProxyModule()
+{
+    if (m_entry->int_version == 0)
+    {
+	struct Yaz_ProxyModule_int0 *int0 =
+	    reinterpret_cast<Yaz_ProxyModule_int0 *>(m_entry->fl);
+	if (int0->destroy)
+	    (*int0->destroy)(m_user_handle);
+    }
+#if HAVE_DLFCN_H
+    dlclose(m_dl_handle);
+#endif
+}
+
+int Yaz_ProxyModule::authenticate(const char *name,
+				  void *element_ptr,
+				  const char *user, const char *group,
+				  const char *password)
+{
+    if (m_entry->int_version == 0)
+    {
+	struct Yaz_ProxyModule_int0 *int0 =
+	    reinterpret_cast<Yaz_ProxyModule_int0 *>(m_entry->fl);
+	
+	if (!int0->authenticate)
+	    return YAZPROXY_RET_NOT_ME;
+	return (*int0->authenticate)(m_user_handle, name, element_ptr,
+				     user, group, password);
+    }
+    return YAZPROXY_RET_NOT_ME;
+}
+
 class Yaz_ProxyConfigP {
     friend class Yaz_ProxyConfig;
 
-    int m_copy;
+    Yaz_ProxyModule *m_modules;
 
     int mycmp(const char *hay, const char *item, size_t len);
     int match_list(int v, const char *m);
     int atoi_l(const char **cp);
 #if HAVE_XSLT
+    void load_modules(void);
+    void unload_modules(void);
     int check_schema(xmlNodePtr ptr, Z_RecordComposition *comp,
 		     const char *schema_identifier);
     xmlDocPtr m_docPtr;
@@ -41,9 +121,9 @@ class Yaz_ProxyConfigP {
 			    int *target_idletime, int *client_idletime,
 			    int *keepalive_limit_bw, int *keepalive_limit_pdu,
 			    int *pre_init, const char **cql2rpn,
-			    const char **authentication,
 			    const char **negotiation_charset,
-			    const char **negotiation_lang);
+			    const char **negotiation_lang,
+			    const char **target_charset);
     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,
@@ -59,27 +139,95 @@ class Yaz_ProxyConfigP {
     int get_explain_ptr(const char *host, const char *db,
 			xmlNodePtr *ptr_target,	xmlNodePtr *ptr_explain);
 #endif
+    Yaz_ProxyConfigP();
+    ~Yaz_ProxyConfigP();
 };
 
-Yaz_ProxyConfig::Yaz_ProxyConfig()
+Yaz_ProxyConfigP::Yaz_ProxyConfigP()
 {
-    m_cp = new Yaz_ProxyConfigP;
-    m_cp->m_copy = 0;
 #if HAVE_XSLT
-    m_cp->m_docPtr = 0;
-    m_cp->m_proxyPtr = 0;
+    m_docPtr = 0;
+    m_proxyPtr = 0;
 #endif
+    m_modules = 0;
 }
 
-Yaz_ProxyConfig::~Yaz_ProxyConfig()
+Yaz_ProxyConfigP::~Yaz_ProxyConfigP()
 {
 #if HAVE_XSLT
-    if (!m_cp->m_copy && m_cp->m_docPtr)
-	xmlFreeDoc(m_cp->m_docPtr);
+    if (m_docPtr)
+	xmlFreeDoc(m_docPtr);
 #endif
+}
+
+Yaz_ProxyConfig::Yaz_ProxyConfig()
+{
+    m_cp = new Yaz_ProxyConfigP;
+}
+
+Yaz_ProxyConfig::~Yaz_ProxyConfig()
+{
     delete m_cp;
 }
 
+#if HAVE_XSLT
+void Yaz_ProxyConfigP::unload_modules()
+{
+    Yaz_ProxyModule *m = m_modules;
+    while (m)
+    {
+	Yaz_ProxyModule *m_next = m->get_next();
+	delete m;
+	m = m_next;
+    }
+    m_modules = 0;
+}
+#endif
+
+#if HAVE_XSLT
+void Yaz_ProxyConfigP::load_modules()
+{
+    if (!m_proxyPtr)
+	return;
+    xmlNodePtr ptr;
+    for (ptr = m_proxyPtr->children; ptr; ptr = ptr->next)
+    {
+	const char *fname;
+	if (ptr->type == XML_ELEMENT_NODE 
+	    && !strcmp((const char *) ptr->name, "module")
+	    && (fname = get_text(ptr)))
+	{
+#if HAVE_DLFCN_H
+	    void *dl_handle = dlopen(fname, RTLD_NOW|RTLD_GLOBAL);
+	    if (dl_handle)
+	    {
+		Yaz_ProxyModule_entry *fl_ptr = 0;
+		fl_ptr = reinterpret_cast<Yaz_ProxyModule_entry *> 
+		    (dlsym(dl_handle, "yazproxy_module"));
+		if (fl_ptr)
+		{
+		    Yaz_ProxyModule *m = new Yaz_ProxyModule(dl_handle,
+							     fl_ptr,
+							     m_modules);
+		    m_modules = m;
+		    yaz_log(YLOG_LOG, "Loading %s OK", fname);
+		}
+		else
+		{
+		    yaz_log(YLOG_WARN, "Loading %s FAIL: missing yazproxy_module symbol", fname);
+		    dlclose(dl_handle);
+		}
+	    }
+	    else
+		yaz_log(YLOG_WARN, "Loading %s FAIL: dlopen failed", fname);
+#else
+	    yaz_log(YLOG_WARN, "Loading &s FAIL: dl unsupported", fname);
+#endif
+	}
+    }
+}
+#endif
+
 int Yaz_ProxyConfig::read_xml(const char *fname)
 {
 #if HAVE_XSLT
@@ -108,6 +256,9 @@ int Yaz_ProxyConfig::read_xml(const char *fname)
     if (m_cp->m_docPtr)
 	xmlFreeDoc(m_cp->m_docPtr);
     m_cp->m_docPtr = ndoc;
+
+    m_cp->unload_modules();
+    m_cp->load_modules();
     return 0;
 #else
     return -2;
@@ -177,9 +328,9 @@ void Yaz_ProxyConfigP::return_target_info(xmlNodePtr ptr,
 					  int *keepalive_limit_pdu,
 					  int *pre_init,
 					  const char **cql2rpn,
-					  const char **authentication,
 					  const char **negotiation_charset,
-					  const char **negotiation_lang)
+					  const char **negotiation_lang,
+					  const char **target_charset)
 {
     *pre_init = 0;
     int no_url = 0;
@@ -244,11 +395,11 @@ void Yaz_ProxyConfigP::return_target_info(xmlNodePtr ptr,
 		*cql2rpn = t;
 	}
 	if (ptr->type == XML_ELEMENT_NODE 
-	    && !strcmp((const char *) ptr->name, "authentication"))
+	    && !strcmp((const char *) ptr->name, "target-charset"))
 	{
 	    const char *t = get_text(ptr);
-	    if (t)
-		*authentication = t;
+	    if (t && target_charset)
+		*target_charset = t;
 	}
 	if (ptr->type == XML_ELEMENT_NODE 
 	    && !strcmp((const char *) ptr->name, "negotiation-charset"))
@@ -377,8 +528,8 @@ int Yaz_ProxyConfigP::check_type_1_attributes(ODR odr, xmlNodePtr ptrl,
 
 #if HAVE_XSLT
 int Yaz_ProxyConfigP::check_type_1_structure(ODR odr, xmlNodePtr ptr,
-					    Z_RPNStructure *q,
-					    char **addinfo)
+					     Z_RPNStructure *q,
+					     char **addinfo)
 {
     if (q->which == Z_RPNStructure_complex)
     {
@@ -501,6 +652,113 @@ const char *Yaz_ProxyConfig::check_mime_type(const char *path)
 }
 
 
+void Yaz_ProxyConfig::target_authentication(const char *name,
+					    ODR odr, Z_InitRequest *req)
+{
+#if HAVE_XSLT
+    xmlNodePtr ptr = m_cp->find_target_node(name, 0);
+    if (!ptr)
+	return ;
+    
+    for (ptr = ptr->children; ptr; ptr = ptr->next)
+	if (ptr->type == XML_ELEMENT_NODE &&
+	    !strcmp((const char *) ptr->name, "target-authentication"))
+	{
+	    struct _xmlAttr *attr;
+	    const char *type = "open";
+	    for (attr = ptr->properties; attr; attr = attr->next)
+	    {
+		if (!strcmp((const char *) attr->name, "type") &&
+		    attr->children && attr->children->type == XML_TEXT_NODE)
+		    type = (const char *) attr->children->content;
+	    }
+	    const char *t = m_cp->get_text(ptr);
+	    if (!t || !strcmp(type, "none"))
+		req->idAuthentication = 0;
+	    else if (!strcmp(type, "anonymous"))
+	    {
+		req->idAuthentication =
+		    (Z_IdAuthentication *)
+		    odr_malloc (odr, sizeof(*req->idAuthentication));
+		req->idAuthentication->which =
+		    Z_IdAuthentication_anonymous;
+		req->idAuthentication->u.anonymous = odr_nullval();
+	    }
+	    else if (!strcmp(type, "open"))
+	    {
+		req->idAuthentication =
+		    (Z_IdAuthentication *)
+		    odr_malloc (odr, sizeof(*req->idAuthentication));
+		req->idAuthentication->which =
+		    Z_IdAuthentication_open;
+		req->idAuthentication->u.open = odr_strdup (odr, t);
+	    }
+	    else if (!strcmp(type, "idPass"))
+	    {
+		char user[64], group[64], password[64];
+		*group = '\0';
+		*password = '\0';
+		*user = '\0';
+		sscanf(t, "%63[^:]:%63[^:]:%63s", user, group, password);
+		
+		req->idAuthentication =
+		    (Z_IdAuthentication *)
+		    odr_malloc (odr, sizeof(*req->idAuthentication));
+		req->idAuthentication->which =
+		    Z_IdAuthentication_idPass;
+		req->idAuthentication->u.idPass =
+		    (Z_IdPass*) odr_malloc(odr, sizeof(Z_IdPass));
+		req->idAuthentication->u.idPass->userId =
+		    *user ? odr_strdup(odr, user) : 0;
+		req->idAuthentication->u.idPass->groupId =
+		    *group ? odr_strdup(odr, group) : 0;
+		req->idAuthentication->u.idPass->password =
+		    *password ? odr_strdup(odr, password) : 0;
+	    }
+	}
+#endif
+}
+
+int Yaz_ProxyConfig::client_authentication(const char *name,
+					   const char *user,
+					   const char *group,
+					   const char *password)
+{
+    int ret = YAZPROXY_RET_NOT_ME;
+#if HAVE_XSLT
+    xmlNodePtr ptr;
+    ptr = m_cp->find_target_node(name, 0);
+    if (!ptr)
+	return 1;
+    for (ptr = ptr->children; ptr; ptr = ptr->next)
+	if (ptr->type == XML_ELEMENT_NODE &&
+	    !strcmp((const char *) ptr->name, "client-authentication"))
+	{
+	    struct _xmlAttr *attr;
+	    const char *module_name = 0;
+	    for (attr = ptr->properties; attr; attr = attr->next)
+	    {
+		if (!strcmp((const char *) attr->name, "module") &&
+		    attr->children && attr->children->type == XML_TEXT_NODE)
+		    module_name = (const char *) attr->children->content;
+	    }
+	    Yaz_ProxyModule *m = m_cp->m_modules;
+	    for (; m; m = m->get_next())
+	    {
+		if (m->is_module(module_name))
+		{
+		    ret = m->authenticate(name, ptr, user, group, password);
+		    if (ret != YAZPROXY_RET_NOT_ME)
+			break;
+		}
+	    }
+	}
+#endif
+    if (ret == YAZPROXY_RET_PERM)
+	return 0;
+    return 1;
+}
+
 int Yaz_ProxyConfig::check_syntax(ODR odr, const char *name,
 				  Odr_oid *syntax, Z_RecordComposition *comp,
 				  char **addinfo,
@@ -772,7 +1030,8 @@ int Yaz_ProxyConfig::get_target_no(int no,
 				   const char **cql2rpn,
 				   const char **authentication,
 				   const char **negotiation_charset,
-				   const char **negotiation_lang)
+				   const char **negotiation_lang,
+				   const char **target_charset)
 {
 #if HAVE_XSLT
     xmlNodePtr ptr;
@@ -799,8 +1058,8 @@ int Yaz_ProxyConfig::get_target_no(int no,
 		    limit_bw, limit_pdu, limit_req,
 		    target_idletime, client_idletime,
 		    keepalive_limit_bw, keepalive_limit_pdu,
-		    pre_init, cql2rpn, authentication,
-		    negotiation_charset, negotiation_lang);
+		    pre_init, cql2rpn,
+		    negotiation_charset, negotiation_lang, target_charset);
 		return 1;
 	    }
 	    i++;
@@ -998,9 +1257,9 @@ void Yaz_ProxyConfig::get_target_info(const char *name,
 				      int *keepalive_limit_pdu,
 				      int *pre_init,
 				      const char **cql2rpn,
-				      const char **authentication,
 				      const char **negotiation_charset,
-				      const char **negotiation_lang)
+				      const char **negotiation_lang,
+				      const char **target_charset)
 {
 #if HAVE_XSLT
     xmlNodePtr ptr;
@@ -1036,8 +1295,9 @@ void Yaz_ProxyConfig::get_target_info(const char *name,
 	m_cp->return_target_info(ptr, url, limit_bw, limit_pdu, limit_req,
 				 target_idletime, client_idletime,
 				 keepalive_limit_bw, keepalive_limit_pdu,
-				 pre_init, cql2rpn, authentication,
-				 negotiation_charset, negotiation_lang);
+				 pre_init, cql2rpn,
+				 negotiation_charset, negotiation_lang,
+				 target_charset);
     }
 #else
     *url = name;