mirror of https://gitee.com/openkylin/ldb.git
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/*
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example code for the ldb database library
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Copyright (C) Brad Hards (bradh@frogmouth.net) 2005-2006
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** NOTE! The following LGPL license applies to the ldb
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** library. This does NOT imply that all of Samba is released
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** under the LGPL
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/** \example ldifreader.c
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The code below shows a simple LDB application.
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It lists / dumps the entries in an LDIF file to standard output.
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*/
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#include "ldb.h"
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/*
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ldb_ldif_write takes a function pointer to a custom output
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function. This version is about as simple as the output function can
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be. In a more complex example, you'd likely be doing something with
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the private data function (e.g. holding a file handle).
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*/
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static int vprintf_fn(void *private_data, const char *fmt, ...)
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{
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int retval;
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va_list ap;
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va_start(ap, fmt);
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/* We just write to standard output */
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retval = vprintf(fmt, ap);
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va_end(ap);
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/* Note that the function should return the number of
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bytes written, or a negative error code */
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return retval;
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}
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int main(int argc, const char **argv)
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{
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struct ldb_context *ldb;
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FILE *fileStream;
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struct ldb_ldif *ldifMsg;
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if (argc != 2) {
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printf("Usage %s filename.ldif\n", argv[0]);
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exit(1);
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}
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/*
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This is the always the first thing you want to do in an LDB
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application - initialise up the context structure.
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Note that you can use the context structure as a parent
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for talloc allocations as well
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*/
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ldb = ldb_init(NULL, NULL);
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fileStream = fopen(argv[1], "r");
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if (0 == fileStream) {
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perror(argv[1]);
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exit(1);
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}
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/*
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We now work through the filestream to get each entry.
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*/
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while ( (ldifMsg = ldb_ldif_read_file(ldb, fileStream)) ) {
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/*
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Each message has a particular change type. For Add,
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Modify and Delete, this will also appear in the
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output listing (as changetype: add, changetype:
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modify or changetype:delete, respectively).
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*/
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switch (ldifMsg->changetype) {
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case LDB_CHANGETYPE_NONE:
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printf("ChangeType: None\n");
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break;
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case LDB_CHANGETYPE_ADD:
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printf("ChangeType: Add\n");
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break;
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case LDB_CHANGETYPE_MODIFY:
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printf("ChangeType: Modify\n");
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break;
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case LDB_CHANGETYPE_DELETE:
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printf("ChangeType: Delete\n");
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break;
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default:
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printf("ChangeType: Unknown\n");
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}
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/*
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We can now write out the results, using our custom
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output routine as defined at the top of this file.
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*/
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ldb_ldif_write(ldb, vprintf_fn, NULL, ldifMsg);
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/*
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Clean up the message
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*/
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ldb_ldif_read_free(ldb, ldifMsg);
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}
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/*
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Clean up the context
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*/
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talloc_free(ldb);
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return 0;
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}
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