even more back-sql files

servers/slapd/back-sql/docs/todo

+2) must add alias handling
+3) must set time limit when preparing all queries, and check size limit
+7) MOST important, probably - fix BUGS (see ...)     
+8) make an utility, which, given objectclass,name of attribute for RDN, and
+   base DN, adds appropriate records to ldap_entries for all data in your
+   RDBMS (until then, you have no automated way to fill in ldap_entries except
+   executing something like "insert into ldap_entries (dn,keyval,...) values
+     (select concat(...,<base>) as dn,id as keyval, ... from ...)")
+     
\ No newline at end of file

servers/slapd/back-sql/sql-wrap.h

+#ifndef __BACKSQL_SQL_WRAP_H__
+#define __BACKSQL_SQL_WRAP_H__
+
+/*
+ *	 Copyright 1999, Dmitry Kovalev (zmit@mail.ru), All rights reserved.
+ *
+ *	 Redistribution and use in source and binary forms are permitted only
+ *	 as authorized by the OpenLDAP Public License.	A copy of this
+ *	 license is available at http://www.OpenLDAP.org/license.html or
+ *	 in file LICENSE in the top-level directory of the distribution.
+ */
+
+#include "back-sql.h"
+#include "sql-types.h"
+
+RETCODE backsql_Prepare(SQLHDBC dbh,SQLHSTMT *sth,char* query,int timeout);
+RETCODE backsql_BindParamStr(SQLHSTMT sth,int par_ind,char *str,int maxlen);
+RETCODE backsql_BindParamID(SQLHSTMT sth,int par_ind,unsigned long *id);
+RETCODE backsql_BindRowAsStrings(SQLHSTMT sth,BACKSQL_ROW_NTS *row);
+RETCODE backsql_FreeRow(BACKSQL_ROW_NTS *row);
+void backsql_PrintErrors(SQLHENV henv, SQLHDBC hdbc, SQLHSTMT sth,int rc);
+
+int backsql_init_db_env(backsql_info *si);
+int backsql_free_db_env(backsql_info *si);
+SQLHDBC backsql_get_db_conn(Backend *be,Connection *ldapc);
+int backsql_free_db_conn(Backend *be,Connection *ldapc);
+
+#endif
\ No newline at end of file

servers/slapd/back-sql/util.c

+/*
+ *	 Copyright 1999, Dmitry Kovalev (zmit@mail.ru), All rights reserved.
+ *
+ *	 Redistribution and use in source and binary forms are permitted only
+ *	 as authorized by the OpenLDAP Public License.	A copy of this
+ *	 license is available at http://www.OpenLDAP.org/license.html or
+ *	 in file LICENSE in the top-level directory of the distribution.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include <stdarg.h>
+#include "slap.h"
+#include "back-sql.h"
+#include "util.h"
+
+
+char backsql_def_oc_query[]="SELECT id,name,keytbl,keycol,create_proc,delete_proc FROM ldap_objclasses";
+char backsql_def_at_query[]="SELECT name,sel_expr,from_tbls,join_where,add_proc,modify_proc,delete_proc FROM ldap_attrs WHERE oc_id=?";
+char backsql_def_delentry_query[]="DELETE FROM ldap_entries WHERE id=?";
+char backsql_def_insentry_query[]="INSERT INTO ldap_entries (dn,objclass,parent,keyval) VALUES (?,?,?,?)";
+char backsql_def_subtree_cond[]="ldap_entries.dn LIKE CONCAT('%',?)";
+
+
+char* backsql_strcat(char* dest,int *buflen, ...)
+{
+ va_list strs;
+ int cdlen,cslen,grow;
+ char *cstr;
+ 
+ //Debug(LDAP_DEBUG_TRACE,"==>my_strcat()\n");
+ va_start(strs,buflen);
+ if (dest==NULL || *buflen<=0)
+  {
+   dest=(char*)ch_calloc(BACKSQL_STR_GROW,sizeof(char));
+   *buflen=BACKSQL_STR_GROW;
+  }
+ cdlen=strlen(dest)+1;
+ while ((cstr=va_arg(strs,char*)) != NULL)
+  {
+   cslen=strlen(cstr);
+   grow=BACKSQL_MAX(BACKSQL_STR_GROW,cslen);
+   if (*buflen-cdlen < cslen)
+    {
+     //Debug(LDAP_DEBUG_TRACE,"my_strcat(): buflen=%d, cdlen=%d, cslen=%d -- reallocating dest\n",
+     //                     *buflen,cdlen,cslen);
+     dest=(char*)ch_realloc(dest,(*buflen)+grow*sizeof(char));
+     if (dest == NULL)
+      {
+       Debug(LDAP_DEBUG_ANY,"my_strcat(): could not reallocate string buffer.\n",0,0,0);
+      }
+     *buflen+=grow;
+     //Debug(LDAP_DEBUG_TRACE,"my_strcat(): new buflen=%d, dest=%p\n",*buflen,dest,0);
+    }
+   strcat(dest,cstr);
+   cdlen+=cslen;
+  }
+ va_end(strs);
+ //Debug(LDAP_DEBUG_TRACE,"<==my_strcat() (dest='%s')\n",dest,0,0);
+ return dest;
+} 
+
+int backsql_entry_addattr(Entry *e,char *at_name,char *at_val,unsigned int at_val_len)
+{
+ Attribute *c_at=e->e_attrs;
+ struct berval **cval;
+ int nvals;
+ 
+ Debug(LDAP_DEBUG_TRACE,"backsql_entry_addattr(): at_name='%s', at_val='%s'\n",at_name,at_val,0);
+ while (c_at!=NULL && strcasecmp(c_at->a_type,at_name))
+  c_at=c_at->a_next;
+ if (c_at == NULL)
+  {
+   //Debug(LDAP_DEBUG_TRACE,"backsql_addattr(): creating new attribute\n",0,0,0);
+   c_at=(Attribute *)ch_calloc(sizeof(Attribute),1);
+   c_at->a_type=strdup(at_name);
+   c_at->a_syntax=SYNTAX_CIS;
+   c_at->a_vals=(struct berval**)ch_calloc(sizeof(struct berval *),1);
+   c_at->a_vals[0]=NULL;
+   c_at->a_next=e->e_attrs;
+   e->e_attrs=c_at;
+  }
+ //Debug(LDAP_DEBUG_TRACE,"backsql_addattr(): checking attribute values\n",0,0,0);
+ //should use different comparison methods for different attributes
+ //for now, uses memcmp
+ for (cval=c_at->a_vals,nvals=0;*cval != NULL &&
+      memcmp((*cval)->bv_val,at_val,BACKSQL_MIN((*cval)->bv_len,at_val_len));cval++,nvals++);
+     
+ if (*cval==NULL)
+  {
+   //Debug(LDAP_DEBUG_TRACE,"backsql_addattr(): nvals=%d; adding new value\n",nvals,0,0);
+   c_at->a_vals=(struct berval **)realloc(c_at->a_vals,sizeof(struct berval *)*(nvals+2));
+   c_at->a_vals[nvals]=(struct berval*)ch_calloc(sizeof(struct berval),1);
+   c_at->a_vals[nvals]->bv_val=(char*)ch_calloc(sizeof(char),at_val_len);
+   strncpy(c_at->a_vals[nvals]->bv_val,at_val,at_val_len);
+   c_at->a_vals[nvals]->bv_len=at_val_len;
+   c_at->a_vals[nvals+1]=NULL;
+  }
+ else
+ {
+  //Debug(LDAP_DEBUG_TRACE,"backsql_addattr(): value already exists\n",0,0,0);
+ }
+ Debug(LDAP_DEBUG_TRACE,"<==backsql_query_addattr()\n",0,0,0);
+ return 1;
+}
+
+char* backsql_get_table_spec(char **p)
+{
+ char *s,*q;
+ char *res=NULL;
+ int res_len=0;
+
+ s=*p;
+ while(**p && **p!=',') (*p)++;
+ if (**p)
+  *(*p)++='\0';
+
+#define BACKSQL_NEXT_WORD  {while (*s && isspace(*s)) s++; if (!*s) return res; q=s; while (*q && !isspace(*q)) q++; if (*q) *q++='\0';}
+ BACKSQL_NEXT_WORD;
+ res=backsql_strcat(res,&res_len,s,NULL);//table name
+ s=q;
+
+ BACKSQL_NEXT_WORD;
+ if (!strcasecmp(s,"as"))
+ {
+  s=q;
+  BACKSQL_NEXT_WORD;
+ }
+ //res=backsql_strcat(res,&res_len," AS ",s,NULL);//table alias
+ //oracle doesn't understand AS :(
+ res=backsql_strcat(res,&res_len," ",s,NULL);//table alias
+ return res;
+}
+
+int backsql_merge_from_clause(char **dest_from,int *dest_len,char *src_from)
+{
+ char *s,*p,*srcc,*pos,e;
+
+ //Debug(LDAP_DEBUG_TRACE,"==>backsql_merge_from_clause(): dest_from='%s',src_from='%s'\n",
+ //				dest_from,src_from,0);
+ srcc=strdup(src_from);
+ p=srcc;
+ while(*p)
+ {//4832041
+  s=backsql_get_table_spec(&p);
+ // Debug(LDAP_DEBUG_TRACE,"backsql_merge_from_clause(): p='%s' s='%s'\n",p,s,0);  
+  if (*dest_from==NULL)
+   *dest_from=backsql_strcat(*dest_from,dest_len,s,NULL);
+  else
+	if((pos=strstr(*dest_from,s))==NULL)
+     *dest_from=backsql_strcat(*dest_from,dest_len,",",s,NULL);
+    else if((e=pos[strlen(s)])!='\0' && e!=',')
+      *dest_from=backsql_strcat(*dest_from,dest_len,",",s,NULL);
+  if (s)
+	ch_free(s);
+ }
+// Debug(LDAP_DEBUG_TRACE,"<==backsql_merge_from_clause()\n",0,0,0);
+ free(srcc);
+ return 1;
+}

servers/slapd/back-sql/util.h

+#ifndef __BACKSQL_UTIL_H__
+#define __BACKSQL_UTIL_H__
+
+
+#include "entry-id.h"
+#include "schema-map.h"
+
+#define BACKSQL_MAX(a,b) ((a)>(b)?(a):(b))
+#define BACKSQL_MIN(a,b) ((a)<(b)?(a):(b))
+
+#define BACKSQL_STR_GROW 64
+
+char* backsql_strcat(char* dest,int *buflen, ...);
+
+int backsql_entry_addattr(Entry *e,char *at_name,char *at_val,unsigned int at_val_len);
+
+typedef struct __backsql_srch_info
+{
+ char *base_dn;
+ int scope;
+ Filter *filter;
+ int slimit,tlimit;
+ time_t	stoptime;
+ backsql_entryID *id_list,*c_eid;
+ int abandon;
+ backsql_info *bi;
+ backsql_oc_map_rec *oc;
+ char *sel,*from,*join_where,*flt_where;
+ int sel_len,from_len,jwhere_len,fwhere_len;
+ SQLHDBC dbh;
+ int status;
+ Backend *be;
+ Connection *conn;
+ Operation *op;
+ char **attrs;
+ Entry *e;
+}backsql_srch_info;
+
+int backsql_process_filter(backsql_srch_info *bsi,Filter *f);
+void backsql_init_search(backsql_srch_info *bsi,backsql_info *bi,char *nbase,int scope,
+						 int slimit,int tlimit,time_t stoptime,Filter *filter,
+						 SQLHDBC dbh,Backend *be,Connection *conn,Operation *op,char **attrs);
+Entry* backsql_id2entry(backsql_srch_info *bsi,Entry* e,backsql_entryID* id);
+
+extern char backsql_def_oc_query[],backsql_def_at_query[],
+			backsql_def_delentry_query[],backsql_def_insentry_query[],
+			backsql_def_subtree_cond[];
+
+int backsql_merge_from_clause(char **dest_from,int *dest_len,char *src_from);
+
+#endif
\ No newline at end of file