* Copyright (C) 1995-2005, Index Data ApS
* See the file LICENSE for details.
*
- * $Id: zoom-c.c,v 1.55 2005-12-12 12:02:04 mike Exp $
+ * $Id: zoom-c.c,v 1.65 2006-03-13 10:48:14 adam Exp $
*/
/**
* \file zoom-c.c
#include <assert.h>
#include <string.h>
+#include <errno.h>
#include "zoom-p.h"
#include <yaz/yaz-util.h>
#include <yaz/charneg.h>
#include <yaz/ill.h>
#include <yaz/srw.h>
+#include <yaz/cql.h>
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
+static char *cql2pqf(ZOOM_connection c, const char *cql);
static void initlog()
{
static void clear_error (ZOOM_connection c)
{
-
+ /*
+ * If an error is tied to an operation then it's ok to clear: for
+ * example, a diagnostic returned from a search is cleared by a
+ * subsequent search. However, problems such as Connection Lost
+ * or Init Refused are not cleared, because they are not
+ * recoverable: doing another search doesn't help.
+ */
switch (c->error)
{
case ZOOM_ERROR_CONNECT:
char **databaseNames;
const char *cp = ZOOM_options_get (options, "databaseName");
- if (!cp || !*cp)
+ if ((!cp || !*cp) && con->host_port)
{
if (strncmp (con->host_port, "unix:", 5) == 0)
cp = strchr(con->host_port+5, ':');
return c;
}
+static zoom_sru_mode get_sru_mode_from_string(const char *s)
+{
+ if (!s || !*s)
+ return zoom_sru_soap;
+ if (!yaz_matchstr(s, "soap"))
+ return zoom_sru_soap;
+ else if (!yaz_matchstr(s, "get"))
+ return zoom_sru_get;
+ else if (!yaz_matchstr(s, "post"))
+ return zoom_sru_post;
+ return zoom_sru_error;
+}
+
ZOOM_API(void)
ZOOM_connection_connect(ZOOM_connection c,
const char *host, int portnum)
else
c->lang = 0;
+ val = ZOOM_options_get (c->options, "sru");
+ c->sru_mode = get_sru_mode_from_string(val);
+
xfree (c->host_port);
if (portnum)
{
return 0;
}
+/*
+ * Translate the CQL string client-side into RPN which is passed to
+ * the server. This is useful for server's that don't themselves
+ * support CQL, for which ZOOM_query_cql() is useless. `conn' is used
+ * only as a place to stash diagnostics if compilation fails; if this
+ * information is not needed, a null pointer may be used.
+ */
+ZOOM_API(int)
+ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
+{
+ char *rpn;
+ int ret;
+
+ yaz_log(log_details, "%p ZOOM_query_cql2rpn str=%s conn=%p", s, str, conn);
+ if (conn == 0)
+ conn = ZOOM_connection_create(0);
+
+ if ((rpn = cql2pqf(conn, str)) == 0)
+ return -1;
+
+ ret = ZOOM_query_prefix(s, rpn);
+ xfree(rpn);
+ return ret;
+}
+
ZOOM_API(int)
ZOOM_query_sortby(ZOOM_query s, const char *criteria)
{
}
}
c->state = STATE_IDLE;
- set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
return zoom_complete;
}
ZOOM_options_get(c->options, "implementationName"),
odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
- version = odr_strdup(c->odr_out, "$Revision: 1.55 $");
+ version = odr_strdup(c->odr_out, "$Revision: 1.65 $");
if (strlen(version) > 10) /* check for unexpanded CVS strings */
version[strlen(version)-2] = '\0';
ireq->implementationVersion = odr_prepend(c->odr_out,
#if HAVE_XML2
static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
{
- char ctype[50];
Z_SOAP_Handler h[2] = {
{"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
{0, 0, 0}
}
}
- strcpy(ctype, "text/xml");
- if (c->charset && strlen(c->charset) < 20)
+ if (c->sru_mode == zoom_sru_get)
+ {
+ yaz_sru_get_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
+ }
+ else if (c->sru_mode == zoom_sru_post)
{
- strcat(ctype, "; charset=");
- strcat(ctype, c->charset);
+ yaz_sru_post_encode(gdu->u.HTTP_Request, sr, c->odr_out, c->charset);
}
- z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
- "Content-Type", ctype);
- z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
- "SOAPAction", "\"\"");
- p->which = Z_SOAP_generic;
- p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
- p->u.generic->no = 0;
- p->u.generic->ns = 0;
- p->u.generic->p = sr;
- p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
+ else if (c->sru_mode == zoom_sru_soap)
+ {
+ z_HTTP_header_add_content_type(c->odr_out,
+ &gdu->u.HTTP_Request->headers,
+ "text/xml", c->charset);
- ret = z_soap_codec_enc(o, &p,
- &gdu->u.HTTP_Request->content_buf,
- &gdu->u.HTTP_Request->content_len, h,
- c->charset);
+ z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
+ "SOAPAction", "\"\"");
+ p->which = Z_SOAP_generic;
+ p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
+ p->u.generic->no = 0;
+ p->u.generic->ns = 0;
+ p->u.generic->p = sr;
+ p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
+
+ ret = z_soap_codec_enc(o, &p,
+ &gdu->u.HTTP_Request->content_buf,
+ &gdu->u.HTTP_Request->content_len, h,
+ c->charset);
+ }
if (!z_GDU(c->odr_out, &gdu, 0, 0))
return zoom_complete;
c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
-
odr_destroy(o);
-
+
event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
ZOOM_connection_put_event (c, event);
odr_reset(c->odr_out);
{
case Z_Term_general:
ZOOM_options_setl(opt, name,
- term->u.general->buf, term->u.general->len);
+ (const char *)(term->u.general->buf),
+ term->u.general->len);
break;
case Z_Term_characterString:
ZOOM_options_set(opt, name, term->u.characterString);
ZOOM_API(ZOOM_scanset)
ZOOM_connection_scan (ZOOM_connection c, const char *start)
{
+ ZOOM_scanset s;
+ ZOOM_query q = ZOOM_query_create();
+
+ ZOOM_query_prefix (q, start);
+
+ s = ZOOM_connection_scan1(c, q);
+ ZOOM_query_destroy (q);
+ return s;
+
+}
+
+ZOOM_API(ZOOM_scanset)
+ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query q)
+{
ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
+ char *start;
+ char *freeme = 0;
scan->connection = c;
scan->odr = odr_createmem (ODR_DECODE);
scan->refcount = 1;
scan->scan_response = 0;
- if ((scan->termListAndStartPoint =
- p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
- start)))
+ /*
+ * We need to check the query-type, so we can recognise CQL and
+ * compile it into a form that we can use here. The ZOOM_query
+ * structure has no explicit `type' member, but inspection of the
+ * ZOOM_query_prefix() and ZOOM_query_cql() functions shows how
+ * the structure is set up in each case.
+ */
+
+ if (q->z_query->which == Z_Query_type_1) {
+ yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p PQF '%s'",
+ c, q, q->query_string);
+ start = q->query_string;
+ } else if (q->z_query->which == Z_Query_type_104) {
+ yaz_log(log_api, "%p ZOOM_connection_scan1 q=%p CQL '%s'",
+ c, q, q->query_string);
+ start = freeme = cql2pqf(c, q->query_string);
+ if (start == 0)
+ return 0;
+ } else {
+ yaz_log(YLOG_FATAL, "%p ZOOM_connection_scan1 q=%p unknown type '%s'",
+ c, q, q->query_string);
+ abort();
+ }
+
+ scan->termListAndStartPoint =
+ p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet, start);
+ xfree (freeme);
+ if (scan->termListAndStartPoint != 0)
{
ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
task->u.scan.scan = scan;
r->descriptor = 0;
r->which = Z_External_single;
- r->u.single_ASN1_type = (Odr_oct *)
- odr_malloc (out, sizeof(*r->u.single_ASN1_type));
- r->u.single_ASN1_type->buf = (unsigned char*)
- odr_malloc (out, illRequest_size);
- r->u.single_ASN1_type->len = illRequest_size;
- r->u.single_ASN1_type->size = illRequest_size;
- memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
+ r->u.single_ASN1_type =
+ odr_create_Odr_oct(out,
+ (unsigned char *)illRequest_buf,
+ illRequest_size);
}
return r;
}
Z_External *ext = (Z_External *) odr_malloc(p->odr_out, sizeof(*ext));
const char *doc = ZOOM_options_get(p->options, "doc");
+ if (!doc)
+ doc = "";
+
req->taskSpecificParameters = ext;
ext->direct_reference = req->packageType;
ext->descriptor = 0;
ext->indirect_reference = 0;
ext->which = Z_External_octet;
- ext->u.single_ASN1_type = (Odr_oct *)
- odr_malloc (p->odr_out, sizeof(Odr_oct));
-
- if (!doc)
- doc = "";
- ext->u.single_ASN1_type->buf = (unsigned char*)
- odr_strdup(p->odr_out, doc);
- ext->u.single_ASN1_type->size = ext->u.single_ASN1_type->len = strlen(doc);
+ ext->u.single_ASN1_type =
+ odr_create_Odr_oct(p->odr_out, (const unsigned char *) doc,
+ strlen(doc));
return apdu;
}
notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
if (recordIdOpaque)
{
- notToKeep->elements[0]->u.opaque = (Odr_oct *)
- odr_malloc (p->odr_out, sizeof(Odr_oct));
- notToKeep->elements[0]->u.opaque->size =
- notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
- notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
- odr_strdup(p->odr_out, recordIdOpaque);
+ notToKeep->elements[0]->u.opaque =
+ odr_create_Odr_oct(p->odr_out,
+ (const unsigned char *) recordIdOpaque,
+ strlen(recordIdOpaque));
}
else if (recordIdNumber)
{
}
else
{
- set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
do_close(c);
}
break;
npr->u.databaseRecord->direct_reference =
yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
npr->u.databaseRecord->which = Z_External_octet;
+
npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
odr_malloc(c->odr_in, sizeof(Odr_oct));
npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
}
else
{
- set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
do_close (c);
}
}
return zoom_pending;
}
if (c->state == STATE_CONNECTING)
- set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
else
- set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, c->host_port);
do_close (c);
return zoom_complete;
}
return "Unsupported query type";
case ZOOM_ERROR_INVALID_QUERY:
return "Invalid query";
+ case ZOOM_ERROR_CQL_PARSE:
+ return "CQL parsing error";
+ case ZOOM_ERROR_CQL_TRANSFORM:
+ return "CQL transformation error";
default:
return diagbib1_str (error);
}
if (r == CS_NONE)
{
event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
- set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
do_close (c);
ZOOM_connection_put_event (c, event);
}
}
else
{
- set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
+ set_ZOOM_error(c, ZOOM_ERROR_CONNECT, c->host_port);
do_close (c);
ZOOM_connection_put_event (c, event);
}
}
return 0;
}
+
+
+/*
+ * Returns an xmalloc()d string containing RPN that corresponds to the
+ * CQL passed in. On error, sets the Connection object's error state
+ * and returns a null pointer.
+ * ### We could cache CQL parser and/or transformer in Connection.
+ */
+static char *cql2pqf(ZOOM_connection c, const char *cql)
+{
+ CQL_parser parser;
+ int error;
+ struct cql_node *node;
+ const char *cqlfile;
+ static cql_transform_t trans;
+ char pqfbuf[512];
+
+ parser = cql_parser_create();
+ if ((error = cql_parser_string(parser, cql)) != 0) {
+ cql_parser_destroy(parser);
+ set_ZOOM_error(c, ZOOM_ERROR_CQL_PARSE, cql);
+ return 0;
+ }
+
+ node = cql_parser_result(parser);
+ /* ### Do not call cql_parser_destroy() yet: it destroys `node'! */
+
+ cqlfile = ZOOM_connection_option_get(c, "cqlfile");
+ if (cqlfile == 0) {
+ cql_parser_destroy(parser);
+ cql_node_destroy(node);
+ set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, "no CQL transform file");
+ return 0;
+ }
+
+ if ((trans = cql_transform_open_fname(cqlfile)) == 0) {
+ char buf[512];
+ cql_parser_destroy(parser);
+ cql_node_destroy(node);
+ sprintf(buf, "can't open CQL transform file '%.200s': %.200s",
+ cqlfile, strerror(errno));
+ set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
+ return 0;
+ }
+
+ error = cql_transform_buf(trans, node, pqfbuf, sizeof pqfbuf);
+ cql_parser_destroy(parser);
+ cql_node_destroy(node);
+ if (error != 0) {
+ char buf[512];
+ const char *addinfo;
+ error = cql_transform_error(trans, &addinfo);
+ cql_transform_close(trans);
+ sprintf(buf, "%.200s (addinfo=%.200s)", cql_strerror(error), addinfo);
+ set_ZOOM_error(c, ZOOM_ERROR_CQL_TRANSFORM, buf);
+ return 0;
+ }
+
+ cql_transform_close(trans);
+ return xstrdup(pqfbuf);
+}
+
+
/*
* Local variables:
* c-basic-offset: 4