zoom: generating content proxy parameters in file
[metaproxy-moved-to-github.git] / src / filter_zoom.cpp
index b3ddddb..bcc4b63 100644 (file)
@@ -20,6 +20,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include "filter_zoom.hpp"
 #include <yaz/zoom.h>
 #include <yaz/yaz-version.h>
+#include <yaz/tpath.h>
 #include <yaz/srw.h>
 #include <metaproxy/package.hpp>
 #include <metaproxy/util.hpp>
@@ -62,6 +63,7 @@ namespace metaproxy_1 {
             std::string record_encoding;
             std::string transform_xsl_fname;
             std::string urlRecipe;
+            std::string contentConnector;
             bool use_turbomarc;
             bool piggyback;
             CCL_bibset ccl_bibset;
@@ -77,6 +79,7 @@ namespace metaproxy_1 {
             std::string m_frontend_database;
             SearchablePtr sptr;
             xsltStylesheetPtr xsp;
+            std::string content_session_id;
         public:
             Backend(SearchablePtr sptr);
             ~Backend();
@@ -139,6 +142,8 @@ namespace metaproxy_1 {
             std::map<std::string,std::string> fieldmap;
             std::string xsldir;
             std::string file_path;
+            std::string content_proxy_server;
+            std::string content_tmp_file;
             CCL_bibset bibset;
             std::string element_transform;
             std::string element_raw;
@@ -386,6 +391,11 @@ yf::Zoom::SearchablePtr yf::Zoom::Impl::parse_torus_record(const xmlNode *ptr)
         {
             s->cfSubDb = mp::xml::get_text(ptr);
         }  
+        else if (!strcmp((const char *) ptr->name,
+                         "contentConnector"))
+        {
+            s->contentConnector = mp::xml::get_text(ptr);
+        }  
         else if (!strcmp((const char *) ptr->name, "udb"))
         {
             s->udb = mp::xml::get_text(ptr);
@@ -500,11 +510,10 @@ void yf::Zoom::Impl::configure_local_records(const xmlNode *ptr, bool test_only)
 void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
                                const char *path)
 {
+    content_tmp_file = "/tmp/mp_content_proxy.";
     if (path && *path)
     {
         file_path = path;
-        if (path[strlen(path)-1] != '/')
-            file_path += "/";
     }
     for (ptr = ptr->children; ptr; ptr = ptr->next)
     {
@@ -554,6 +563,21 @@ void yf::Zoom::Impl::configure(const xmlNode *ptr, bool test_only,
             if (cql_field.length())
                 fieldmap[cql_field] = ccl_field;
         }
+        else if (!strcmp((const char *) ptr->name, "contentProxy"))
+        {
+            const struct _xmlAttr *attr;
+            for (attr = ptr->properties; attr; attr = attr->next)
+            {
+                if (!strcmp((const char *) attr->name, "server"))
+                    content_proxy_server = mp::xml::get_text(attr->children);
+                else if (!strcmp((const char *) attr->name, "tmp_file"))
+                    content_tmp_file = mp::xml::get_text(attr->children);
+                else
+                    throw mp::filter::FilterException(
+                        "Bad attribute " + std::string((const char *)
+                                                       attr->name));
+            }
+        }
         else
         {
             throw mp::filter::FilterException
@@ -627,18 +651,35 @@ yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
     xsltStylesheetPtr xsp = 0;
     if (sptr->transform_xsl_fname.length())
     {
+        const char *path = 0;
+
+        if (m_p->xsldir.length())
+            path = m_p->xsldir.c_str();
+        else
+            path = m_p->file_path.c_str();
         std::string fname;
 
-        if (m_p->xsldir.length()) 
-            fname = m_p->xsldir + "/" + sptr->transform_xsl_fname;
+        char fullpath[1024];
+        char *cp = yaz_filepath_resolve(sptr->transform_xsl_fname.c_str(),
+                                        path, 0, fullpath);
+        if (cp)
+            fname.assign(cp);
         else
-            fname = m_p->file_path + sptr->transform_xsl_fname;
+        {
+            *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
+            *addinfo = (char *)
+                odr_malloc(odr, 40 + sptr->transform_xsl_fname.length());
+            sprintf(*addinfo, "File could not be read: %s", 
+                    sptr->transform_xsl_fname.c_str());
+            BackendPtr b;
+            return b;
+        }
         xmlDoc *xsp_doc = xmlParseFile(fname.c_str());
         if (!xsp_doc)
         {
             *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
-            *addinfo = (char *) odr_malloc(odr, 40 + strlen(fname.c_str()));
-            sprintf(*addinfo, "xmlParseFile failed. File %s", fname.c_str());
+            *addinfo = (char *) odr_malloc(odr, 40 + fname.length());
+            sprintf(*addinfo, "xmlParseFile failed. File: %s", fname.c_str());
             BackendPtr b;
             return b;
         }
@@ -693,6 +734,32 @@ yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
                 db_args += "proxy=" + mp::util::uri_encode(sptr->cfProxy);
             }
         }
+        else
+        {
+            // user may specify backend authentication for CF target
+            const char *param_user = 0;
+            const char *param_password = 0;
+            char **names;
+            char **values;
+            int i;
+            int no_parms = yaz_uri_to_array(db_args.c_str(),
+                                            odr, &names, &values);
+            for (i = 0; i < no_parms; i++)
+            {
+                const char *name = names[i];
+                const char *value = values[i];
+                if (!strcmp(name, "user"))
+                    param_user = value;
+                else if (!strcmp(name, "password"))
+                    param_password = value;
+            }
+            if (param_user && param_password)
+            {
+                authentication = std::string(param_user)
+                    + "/" + std::string(param_password);
+            }
+        }
+
         if (sptr->cfSubDb.length())
         {
             if (db_args.length())
@@ -735,25 +802,55 @@ yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
             }
             if (param_user && param_password)
             {
-                char *auth = (char*) odr_malloc(
-                    odr, strlen(param_user) + strlen(param_password) + 2);
-                strcpy(auth, param_user);
-                strcat(auth, "/");
-                strcat(auth, param_password);
-                b->set_option("user", auth);
+                authentication = std::string(param_user)
+                    + "/" + std::string(param_password);
             }
             db_args.clear(); // no arguments to be passed (non-CF)
         }
-        else
-        {
-            // use authentication from Torus, if given
-            if (authentication.length())
-                b->set_option("user", authentication.c_str());
-        }
+        if (authentication.length())
+            b->set_option("user", authentication.c_str());
     }
 
     if (sru_proxy)
         b->set_option("proxy", sru_proxy);
+    
+    if (b->sptr->contentConnector.length())
+    {
+        int fd;
+        
+        char *fname = (char *) xmalloc(m_p->content_tmp_file.length() + 8);
+        strcpy(fname, m_p->content_tmp_file.c_str());
+        strcat(fname, "XXXXXX");
+        fd = mkstemp(fname);
+        
+        if (fd == -1)
+        {
+            yaz_log(YLOG_WARN|YLOG_ERRNO, "create %s", fname);
+            *error = YAZ_BIB1_TEMPORARY_SYSTEM_ERROR;
+            *addinfo = (char *)  odr_malloc(odr, 40 + strlen(fname));
+            sprintf(*addinfo, "Could not create %s", fname);
+            xfree(fname);
+            BackendPtr backend_null;
+            return backend_null;
+        }
+        b->content_session_id.assign(fname + (strlen(fname) - 6));
+        WRBUF w = wrbuf_alloc();
+        wrbuf_puts(w, "#content_proxy\n");
+        if (authentication.length())
+            wrbuf_printf(w, "authentication: %s\n", authentication.c_str());
+        if (sru_proxy)
+            wrbuf_printf(w, "proxy: %s\n", sru_proxy);
+        if (sptr->cfAuth.length())
+            wrbuf_printf(w, "cfauth: %s\n", sptr->cfAuth.c_str());
+        if (sptr->cfProxy.length())
+            wrbuf_printf(w, "cfproxy: %s\n", sptr->cfProxy.c_str());
+
+        write(fd, wrbuf_buf(w), wrbuf_len(w));
+        close(fd);
+        yaz_log(YLOG_LOG, "file %s created\n", fname);
+        xfree(fname);
+    }
+    
 
     std::string url;
     if (sptr->sru.length())
@@ -920,6 +1017,18 @@ Z_Records *yf::Zoom::Frontend::get_records(Odr_int start,
                     xmlDoc *doc = xmlParseMemory(rec_buf, rec_len);
                     std::string res = 
                         mp::xml::url_recipe_handle(doc, b->sptr->urlRecipe);
+                    if (res.length() && b->content_session_id.length())
+                    {
+                        size_t off = res.find_first_of("://");
+                        if (off != std::string::npos)
+                        {
+                            char tmp[1024];
+                            sprintf(tmp, "%s.%s/",
+                                    b->content_session_id.c_str(),
+                                    m_p->content_proxy_server.c_str());
+                            res.insert(off + 3, tmp);
+                        }
+                    }
                     if (res.length())
                     {
                         xmlNode *ptr = xmlDocGetRootElement(doc);