/*
This file is part of GNUnet
Copyright (C) 2014, 2015, 2016 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify it under the
- terms of the GNU General Public License as published by the Free Software
- Foundation; either version 3, or (at your option) any later version.
- GNUnet is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- A PARTICULAR PURPOSE. See the GNU General Public License for more details.
- You should have received a copy of the GNU General Public License along with
- GNUnet; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @file my/my_result_helper.c
#include "gnunet_util_lib.h"
#include "gnunet_my_lib.h"
+
/**
* extract data from a Mysql database @a result at row @a row
*
* @param cls closure
- * @param qp data about the query
- * @param result mysql result
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] result mysql result
* @return
* #GNUNET_OK if all results could be extracted
* #GNUNET_SYSERR if a result was invalid
static int
pre_extract_varsize_blob (void *cls,
struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
MYSQL_BIND *results)
{
results[0].buffer = NULL;
results[0].buffer_length = 0;
results[0].length = &rs->mysql_bind_output_length;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
+
return GNUNET_OK;
}
void *buf;
size_t size;
+ if (*results->is_null)
+ return GNUNET_SYSERR;
size = (size_t) rs->mysql_bind_output_length;
+
if (rs->mysql_bind_output_length != size)
return GNUNET_SYSERR; /* 'unsigned long' does not fit in size_t!? */
+
buf = GNUNET_malloc (size);
+
results[0].buffer = buf;
results[0].buffer_length = size;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+
if (0 !=
mysql_stmt_fetch_column (stmt,
results,
GNUNET_free (buf);
return GNUNET_SYSERR;
}
+
*(void **) rs->dst = buf;
*rs->result_size = size;
+
return GNUNET_OK;
}
cleanup_varsize_blob (void *cls,
struct GNUNET_MY_ResultSpec *rs)
{
- void *ptr;
-
- ptr = * (void **) rs->dst;
- if (NULL == ptr)
- return;
- GNUNET_free (ptr);
- *(void **) rs->dst = NULL;
- *rs->result_size = 0;
+ void **ptr = (void **)rs->dst;
+
+ if (NULL != *ptr)
+ {
+ GNUNET_free (*ptr);
+ *ptr = NULL;
+ }
}
* Variable-size result expected
*
* @param[out] dst where to store the result, allocated
- * @param[out] sptr where to store the size of @a dst
+ * @param[out] ptr_size where to store the size of @a dst
* @return array entru for the result specification to use
*/
struct GNUNET_MY_ResultSpec
* Extract data from a Mysql database @a result at row @a row
*
* @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in] dst_size desired size, never NULL
- * @param[out] dst where to store the result
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
* @return
* #GNUNET_OK if all results could be extracted
* #GNUNET_SYSERR if a result was invalid(non-existing field or NULL)
static int
pre_extract_fixed_blob (void *cls,
struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
MYSQL_BIND *results)
{
results[0].buffer = rs->dst;
results[0].buffer_length = rs->dst_size;
results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
+
return GNUNET_OK;
}
* result at row @a row
*
* @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in] dst_size desired size, never NULL
- * @param[out] dst where to store the result
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
* @return
* #GNUNET_OK if all results could be extracted
* #GNUNET_SYSERR if a result was invalid(non-existing field or NULL)
static int
post_extract_fixed_blob (void *cls,
struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
MYSQL_BIND *results)
{
+ if (*results->is_null)
+ return GNUNET_SYSERR;
if (rs->dst_size != rs->mysql_bind_output_length)
return GNUNET_SYSERR;
return GNUNET_OK;
*
* @param name name of the field in the table
* @param[out] dst where to store the result
- * @param dst_size number of bytes in @a dst
+ * @param ptr_size number of bytes in @a dst
* @return array entry for the result specification to use
*/
struct GNUNET_MY_ResultSpec
{
.pre_conv = &pre_extract_fixed_blob,
.post_conv = &post_extract_fixed_blob,
+ .cleaner = NULL,
.dst = (void *)(ptr),
.dst_size = ptr_size,
.num_fields = 1
return res;
}
+
/**
* Extract data from a Mysql database @a result at row @a row
*
* @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in, out] dst_size where to store size of result, may be NULL
- * @param[out] dst where to store the result
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
* @return
* #GNUNET_OK if all results could be extracted
* #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
*/
static int
-extract_rsa_public_key (void *cls,
- struct GNUNET_MY_ResultSpec *rs,
- MYSQL_BIND *results)
+pre_extract_rsa_public_key (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
+{
+ results[0].buffer = NULL;
+ results[0].buffer_length = 0;
+ results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Check size of extracted fixed size data from a Mysql database @a
+ * result at row @a row
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
+ */
+static int
+post_extract_rsa_public_key (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
{
struct GNUNET_CRYPTO_RsaPublicKey **pk = rs->dst;
+ void *buf;
+ size_t size;
- size_t len;
- const char *res;
+ if (*results->is_null)
+ return GNUNET_SYSERR;
+ size = (size_t) rs->mysql_bind_output_length;
+
+ if (rs->mysql_bind_output_length != size)
+ return GNUNET_SYSERR; /* 'unsigned long' does not fit in size_t!? */
+ buf = GNUNET_malloc (size);
- if (results->is_null)
+ results[0].buffer = buf;
+ results[0].buffer_length = size;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+ if (0 !=
+ mysql_stmt_fetch_column (stmt,
+ results,
+ column,
+ 0))
{
+ GNUNET_free (buf);
return GNUNET_SYSERR;
}
- len = results->buffer_length;
- res = results->buffer;
-
- *pk = GNUNET_CRYPTO_rsa_public_key_decode (res,
- len);
-
+ *pk = GNUNET_CRYPTO_rsa_public_key_decode (buf,
+ size);
+ GNUNET_free (buf);
if (NULL == *pk)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Results contains bogus value (fail to decode)\n");
+ "Results contains bogus public key value (fail to decode)\n");
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
+
+/**
+ * Function called to clean up memory allocated
+ * by a #GNUNET_MY_ResultConverter.
+ *
+ * @param cls closure
+ * @param rs result data to clean up
+ */
+static void
+clean_rsa_public_key (void *cls,
+ struct GNUNET_MY_ResultSpec *rs)
+{
+ struct GNUNET_CRYPTO_RsaPublicKey **pk = rs->dst;
+
+ if (NULL != *pk)
+ {
+ GNUNET_CRYPTO_rsa_public_key_free (*pk);
+ *pk = NULL;
+ }
+}
+
+
/**
* RSA public key expected
*
GNUNET_MY_result_spec_rsa_public_key (struct GNUNET_CRYPTO_RsaPublicKey **rsa)
{
struct GNUNET_MY_ResultSpec res = {
- &extract_rsa_public_key,
- NULL,
- (void *) rsa,
- 0,
- NULL,
- 1
+ .pre_conv = &pre_extract_rsa_public_key,
+ .post_conv = &post_extract_rsa_public_key,
+ .cleaner = &clean_rsa_public_key,
+ .dst = (void *) rsa,
+ .dst_size = 0,
+ .num_fields = 1
};
return res;
}
+
/**
* Extract data from a Mysql database @a result at row @a row.
*
* @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in,out] dst_size where to store size of result, may be NULL
- * @param[out] dst where to store the result
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
* @return
* #GNUNET_OK if all results could be extracted
* #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
*/
static int
-extract_rsa_signature (void *cls,
+pre_extract_rsa_signature (void *cls,
struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
MYSQL_BIND *results)
+{
+ results[0].buffer = 0;
+ results[0].buffer_length = 0;
+ results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Extract data from a Mysql database @a result at row @a row.
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
+ */
+static int
+post_extract_rsa_signature (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
{
struct GNUNET_CRYPTO_RsaSignature **sig = rs->dst;
- size_t len;
- const char *res;
+ void *buf;
+ size_t size;
- if (results->is_null)
- {
+ if (*results->is_null)
return GNUNET_SYSERR;
- }
+ size = (size_t) rs->mysql_bind_output_length;
- len = results->buffer_length;
- res = results->buffer;
+ if (rs->mysql_bind_output_length != size)
+ return GNUNET_SYSERR; /* 'unsigned long' does not fit in size_t!? */
+ buf = GNUNET_malloc (size);
- *sig = GNUNET_CRYPTO_rsa_signature_decode (res,
- len);
+ results[0].buffer = buf;
+ results[0].buffer_length = size;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+ if (0 !=
+ mysql_stmt_fetch_column (stmt,
+ results,
+ column,
+ 0))
+ {
+ GNUNET_free (buf);
+ return GNUNET_SYSERR;
+ }
- if (NULL != *sig)
+ *sig = GNUNET_CRYPTO_rsa_signature_decode (buf,
+ size);
+ GNUNET_free (buf);
+ if (NULL == *sig)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Resuls contains bogus value (fails to decode)\n");
+ "Resuls contains bogus signature value (fails to decode)\n");
return GNUNET_SYSERR;
}
-
return GNUNET_OK;
}
+
+/**
+ * Function called to clean up memory allocated
+ * by a #GNUNET_MY_ResultConverter.
+ *
+ * @param cls closure
+ * @param rd result data to clean up
+ */
+static void
+clean_rsa_signature (void *cls,
+ struct GNUNET_MY_ResultSpec *rs)
+{
+ struct GNUNET_CRYPTO_RsaSignature **sig = rs->dst;
+
+ if (NULL != *sig)
+ {
+ GNUNET_CRYPTO_rsa_signature_free (*sig);
+ *sig = NULL;
+ }
+}
+
+
/**
* RSA signature expected.
*
{
struct GNUNET_MY_ResultSpec res =
{
- &extract_rsa_signature,
- NULL,
- (void *)sig,
- 0,
- NULL,
- 1
+ .pre_conv = &pre_extract_rsa_signature,
+ .post_conv = &post_extract_rsa_signature,
+ .cleaner = &clean_rsa_signature,
+ .dst = (void *)sig,
+ .dst_size = 0,
+ .num_fields = 1
};
return res;
}
+
/**
- * Extract data from a Mysql database @a result at row @a row
- *
- * @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in, out] dst_size where to store size of result, may be NULL
- * @param[out] dst where to store the result
- * @return
- * #GNUNET_OK if all results could be extracted
- * #GNUNET_SYSERR if a result was invalid (non existing field or NULL)
- */
+ * Extract data from a Mysql database @a result at row @a row
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non existing field or NULL)
+ */
static int
-extract_string (void * cls,
- struct GNUNET_MY_ResultSpec *rs,
- MYSQL_BIND *results)
+pre_extract_string (void * cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
{
- char **str = rs->dst;
- size_t len;
- const char *res;
+ results[0].buffer = NULL;
+ results[0].buffer_length = 0;
+ results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
- *str = NULL;
+ return GNUNET_OK;
+}
- if (results->is_null)
- {
+
+/**
+ * Check size of extracted fixed size data from a Mysql database @a
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non existing field or NULL)
+ */
+static int
+post_extract_string (void * cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
+{
+ size_t size = (size_t) rs->mysql_bind_output_length;
+ char *buf;
+
+ if (rs->mysql_bind_output_length != size)
return GNUNET_SYSERR;
+ if (*results->is_null)
+ {
+ *(void **) rs->dst = NULL;
+ return GNUNET_OK;
}
- len = results->buffer_length;
- res = results->buffer;
-
- *str = GNUNET_strndup (res,
- len);
+ buf = GNUNET_malloc (size);
+ results[0].buffer = buf;
+ results[0].buffer_length = size;
+ results[0].buffer_type = MYSQL_TYPE_BLOB;
- if (NULL == *str)
+ if (0 !=
+ mysql_stmt_fetch_column (stmt,
+ results,
+ column,
+ 0))
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Results contains bogus value (fail to decode)\n");
+ GNUNET_free (buf);
return GNUNET_SYSERR;
}
+ buf[size] = '\0';
+ *(void **) rs->dst = buf;
return GNUNET_OK;
}
GNUNET_MY_result_spec_string (char **dst)
{
struct GNUNET_MY_ResultSpec res = {
- &extract_string,
- NULL,
- (void *) dst,
- 0,
- NULL,
- 1
+ .pre_conv = &pre_extract_string,
+ .post_conv = &post_extract_string,
+ .cleaner = NULL,
+ .dst = (void *) dst,
+ .dst_size = 0,
+ .num_fields = 1
};
return res;
}
* Extract data from a Postgres database @a result at row @a row.
*
* @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in,out] dst_size where to store size of result, may be NULL
- * @param[out] dst where to store the result
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
*/
static int
-extract_uint16 (void *cls,
- struct GNUNET_MY_ResultSpec *rs,
- MYSQL_BIND *results)
+pre_extract_uint16 (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
{
- uint16_t *udst = rs->dst;
- const uint16_t *res;
-
- if(results->is_null)
- {
- return GNUNET_SYSERR;
- }
+ results[0].buffer = rs->dst;
+ results[0].buffer_length = rs->dst_size;
+ results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_SHORT;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
- GNUNET_assert (NULL != rs->dst);
- if (sizeof (uint16_t) != rs->dst_size)
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
+ return GNUNET_OK;
+}
- res = (uint16_t *)results->buffer;
- *udst = ntohs (*res);
+/**
+ * Check size of extracted fixed size data from a Mysql datbase.
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_YES if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
+ */
+static int
+post_extract_uint16 (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
+{
+ if (rs->dst_size != rs->mysql_bind_output_length)
+ return GNUNET_SYSERR;
+ if (*results->is_null)
+ return GNUNET_SYSERR;
return GNUNET_OK;
}
GNUNET_MY_result_spec_uint16 (uint16_t *u16)
{
struct GNUNET_MY_ResultSpec res = {
- &extract_uint16,
- NULL,
- (void *) u16,
- sizeof (*u16),
- NULL,
- 1
+ .pre_conv = &pre_extract_uint16,
+ .post_conv = &post_extract_uint16,
+ .cleaner = NULL,
+ .dst = (void *) u16,
+ .dst_size = sizeof (*u16),
+ .num_fields = 1
};
return res;
}
+
/**
* Extrac data from a MYSQL database @a result at row @a row
*
* @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in, out] dst_size where to store size of result, may be NULL
- * @param[out] dst where to store the result
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
* @return
* #GNUNET_OK if all results could be extracted
* #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
*/
static int
-extract_uint32 (void *cls,
- struct GNUNET_MY_ResultSpec *rs,
- MYSQL_BIND *results)
+pre_extract_uint32 (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
{
- uint32_t *udst = rs->dst;
- const uint32_t *res;
-
- if(results->is_null)
- {
- return GNUNET_SYSERR;
- }
-
- GNUNET_assert (NULL != rs->dst);
- if (sizeof (uint32_t) != rs->dst_size)
- {
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
+ results[0].buffer = rs->dst;
+ results[0].buffer_length = rs->dst_size;
+ results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_LONG;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
- res = (uint32_t *)results->buffer;
+ return GNUNET_OK;
+}
- *udst = ntohl (*res);
+/**
+ * Extrac data from a MYSQL database @a result at row @a row
+ *
+ * @param cls closure
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
+ */
+static int
+post_extract_uint32 (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT * stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
+{
+ if (rs->dst_size != rs->mysql_bind_output_length)
+ return GNUNET_SYSERR;
+ if (*results->is_null)
+ return GNUNET_SYSERR;
return GNUNET_OK;
}
+
/**
* uint32_t expected
*
GNUNET_MY_result_spec_uint32 (uint32_t *u32)
{
struct GNUNET_MY_ResultSpec res = {
- &extract_uint32,
- NULL,
- (void *) u32,
- sizeof (*u32),
- NULL,
- 1
+ .pre_conv = &pre_extract_uint32,
+ .post_conv = &post_extract_uint32,
+ .cleaner = NULL,
+ .dst = (void *) u32,
+ .dst_size = sizeof (*u32),
+ .num_fields = 1
};
return res;
}
+
/**
- * Extract data from a MYSQL database @a result at row @a row
- *
- * @param cls closure
- * @param result where to extract data from
- * @param int row to extract data from
- * @param fname name (or prefix) of the fields to extract from
- * @param[in, out] dst_size where to store size of result, may be null
- * @param[out] dst where to store the result
- * @return
- * #GNUNET_OK if all results could be extracted
- * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
- */
+ * Extract data from a MYSQL database @a result at row @a row
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
+ */
static int
-extract_uint64 (void *cls,
- struct GNUNET_MY_ResultSpec *rs,
- MYSQL_BIND *results)
+pre_extract_uint64 (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
{
- uint64_t *udst = rs->dst;
- const uint64_t *res;
-
- results[0].buffer = &rs->dst;
- results[0].buffer_length = 42;
-
- GNUNET_assert (NULL != rs->dst);
if (sizeof (uint64_t) != rs->dst_size)
- {
- GNUNET_break (0);
return GNUNET_SYSERR;
- }
+ results[0].buffer = rs->dst;
+ results[0].buffer_length = rs->dst_size;
+ results[0].length = &rs->mysql_bind_output_length;
+ results[0].buffer_type = MYSQL_TYPE_LONGLONG;
+ results[0].is_null = &rs->is_null;
+ rs->is_null = 0;
- res = (uint64_t *)results->buffer;
- *udst = GNUNET_ntohll (*res);
+ return GNUNET_OK;
+}
+
+/**
+ * Check size of extracted fixe size data from a Mysql database
+ *
+ * @param cls closure
+ * @param[in,out] rs
+ * @param stmt the mysql statement that is being run
+ * @param column the column that is being processed
+ * @param[out] results
+ * @return
+ * #GNUNET_OK if all results could be extracted
+ * #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
+ */
+static int
+post_extract_uint64 (void *cls,
+ struct GNUNET_MY_ResultSpec *rs,
+ MYSQL_STMT *stmt,
+ unsigned int column,
+ MYSQL_BIND *results)
+{
+ if (sizeof (uint64_t) != rs->dst_size)
+ return GNUNET_SYSERR;
+ if (*results->is_null)
+ return GNUNET_SYSERR;
return GNUNET_OK;
}
/**
- * uint64_t expected.
- *
- * @param[out] u64 where to store the result
- * @return array entry for the result specification to use
- */
+ * uint64_t expected.
+ *
+ * @param[out] u64 where to store the result
+ * @return array entry for the result specification to use
+ */
struct GNUNET_MY_ResultSpec
GNUNET_MY_result_spec_uint64 (uint64_t *u64)
{
struct GNUNET_MY_ResultSpec res = {
- .pre_conv = &extract_uint64,
+ .pre_conv = &pre_extract_uint64,
+ .post_conv = &post_extract_uint64,
+ .cleaner = NULL,
.dst = (void *) u64,
.dst_size = sizeof (*u64),
.num_fields = 1
return res;
}
-/* end of pq_result_helper.c */
+
+/* end of my_result_helper.c */
projects / oweals / gnunet.git / blobdiff