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authorChristian Grothoff <christian@grothoff.org>2016-02-05 22:24:10 +0000
committerChristian Grothoff <christian@grothoff.org>2016-02-05 22:24:10 +0000
commitd75a2de4e9a450269291a47593f2e50c37eca733 (patch)
tree915d9cf6f76d8cfb2e7fb80f948aa362e72a944f /src/pq/pq_query_helper.c
parent522bd40f4cee9e5546d15128f76d18799017220c (diff)
creating libgnunetpq library
Diffstat (limited to 'src/pq/pq_query_helper.c')
-rw-r--r--src/pq/pq_query_helper.c386
1 files changed, 386 insertions, 0 deletions
diff --git a/src/pq/pq_query_helper.c b/src/pq/pq_query_helper.c
new file mode 100644
index 000000000..5f2764b62
--- /dev/null
+++ b/src/pq/pq_query_helper.c
@@ -0,0 +1,386 @@
+ /*
+ 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/>
+*/
+/**
+ * @file pq/pq_query_helper.c
+ * @brief functions to initialize parameter arrays
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "gnunet_pq_lib.h"
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param data pointer to input argument
+ * @param data_len number of bytes in @a data (if applicable)
+ * @param[out] param_values SQL data to set
+ * @param[out] param_lengths SQL length data to set
+ * @param[out] param_formats SQL format data to set
+ * @param param_length number of entries available in the @a param_values, @a param_lengths and @a param_formats arrays
+ * @param[out] scratch buffer for dynamic allocations (to be done via #GNUNET_malloc()
+ * @param scratch_length number of entries left in @a scratch
+ * @return -1 on error, number of offsets used in @a scratch otherwise
+ */
+static int
+qconv_fixed (void *cls,
+ const void *data,
+ size_t data_len,
+ void *param_values[],
+ int param_lengths[],
+ int param_formats[],
+ unsigned int param_length,
+ void *scratch[],
+ unsigned int scratch_length)
+{
+ GNUNET_break (NULL == cls);
+ if (1 != param_length)
+ return -1;
+ param_values[0] = (void *) data;
+ param_lengths[0] = data_len;
+ param_formats[0] = 1;
+ return 0;
+}
+
+
+/**
+ * Generate query parameter for a buffer @a ptr of
+ * @a ptr_size bytes.
+ *
+ * @param ptr pointer to the query parameter to pass
+ * @oaran ptr_size number of bytes in @a ptr
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_fixed_size (const void *ptr,
+ size_t ptr_size)
+{
+ struct GNUNET_PQ_QueryParam res =
+ { &qconv_fixed, NULL, ptr, ptr_size, 1 };
+ return res;
+}
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param data pointer to input argument
+ * @param data_len number of bytes in @a data (if applicable)
+ * @param[out] param_values SQL data to set
+ * @param[out] param_lengths SQL length data to set
+ * @param[out] param_formats SQL format data to set
+ * @param param_length number of entries available in the @a param_values, @a param_lengths and @a param_formats arrays
+ * @param[out] scratch buffer for dynamic allocations (to be done via #GNUNET_malloc()
+ * @param scratch_length number of entries left in @a scratch
+ * @return -1 on error, number of offsets used in @a scratch otherwise
+ */
+static int
+qconv_uint16 (void *cls,
+ const void *data,
+ size_t data_len,
+ void *param_values[],
+ int param_lengths[],
+ int param_formats[],
+ unsigned int param_length,
+ void *scratch[],
+ unsigned int scratch_length)
+{
+ const uint16_t *u_hbo = data;
+ uint16_t *u_nbo;
+
+ GNUNET_break (NULL == cls);
+ if (1 != param_length)
+ return -1;
+ u_nbo = GNUNET_new (uint16_t);
+ scratch[0] = u_nbo;
+ *u_nbo = htons (*u_hbo);
+ param_values[0] = (void *) u_nbo;
+ param_lengths[0] = sizeof (uint16_t);
+ param_formats[0] = 1;
+ return 1;
+}
+
+
+/**
+ * Generate query parameter for an uint16_t in host byte order.
+ *
+ * @param x pointer to the query parameter to pass
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_uint16 (const uint16_t *x)
+{
+ struct GNUNET_PQ_QueryParam res =
+ { &qconv_uint16, NULL, x, sizeof (*x), 1 };
+ return res;
+}
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param data pointer to input argument
+ * @param data_len number of bytes in @a data (if applicable)
+ * @param[out] param_values SQL data to set
+ * @param[out] param_lengths SQL length data to set
+ * @param[out] param_formats SQL format data to set
+ * @param param_length number of entries available in the @a param_values, @a param_lengths and @a param_formats arrays
+ * @param[out] scratch buffer for dynamic allocations (to be done via #GNUNET_malloc()
+ * @param scratch_length number of entries left in @a scratch
+ * @return -1 on error, number of offsets used in @a scratch otherwise
+ */
+static int
+qconv_uint32 (void *cls,
+ const void *data,
+ size_t data_len,
+ void *param_values[],
+ int param_lengths[],
+ int param_formats[],
+ unsigned int param_length,
+ void *scratch[],
+ unsigned int scratch_length)
+{
+ const uint32_t *u_hbo = data;
+ uint32_t *u_nbo;
+
+ GNUNET_break (NULL == cls);
+ if (1 != param_length)
+ return -1;
+ u_nbo = GNUNET_new (uint32_t);
+ scratch[0] = u_nbo;
+ *u_nbo = htonl (*u_hbo);
+ param_values[0] = (void *) u_nbo;
+ param_lengths[0] = sizeof (uint32_t);
+ param_formats[0] = 1;
+ return 1;
+}
+
+
+/**
+ * Generate query parameter for an uint32_t in host byte order.
+ *
+ * @param x pointer to the query parameter to pass
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_uint32 (const uint32_t *x)
+{
+ struct GNUNET_PQ_QueryParam res =
+ { &qconv_uint32, NULL, x, sizeof (*x), 1 };
+ return res;
+}
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param data pointer to input argument
+ * @param data_len number of bytes in @a data (if applicable)
+ * @param[out] param_values SQL data to set
+ * @param[out] param_lengths SQL length data to set
+ * @param[out] param_formats SQL format data to set
+ * @param param_length number of entries available in the @a param_values, @a param_lengths and @a param_formats arrays
+ * @param[out] scratch buffer for dynamic allocations (to be done via #GNUNET_malloc()
+ * @param scratch_length number of entries left in @a scratch
+ * @return -1 on error, number of offsets used in @a scratch otherwise
+ */
+static int
+qconv_uint64 (void *cls,
+ const void *data,
+ size_t data_len,
+ void *param_values[],
+ int param_lengths[],
+ int param_formats[],
+ unsigned int param_length,
+ void *scratch[],
+ unsigned int scratch_length)
+{
+ const uint64_t *u_hbo = data;
+ uint64_t *u_nbo;
+
+ GNUNET_break (NULL == cls);
+ if (1 != param_length)
+ return -1;
+ u_nbo = GNUNET_new (uint64_t);
+ scratch[0] = u_nbo;
+ *u_nbo = GNUNET_htonll (*u_hbo);
+ param_values[0] = (void *) u_nbo;
+ param_lengths[0] = sizeof (uint64_t);
+ param_formats[0] = 1;
+ return 1;
+}
+
+
+/**
+ * Generate query parameter for an uint64_t in host byte order.
+ *
+ * @param x pointer to the query parameter to pass
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_uint64 (const uint64_t *x)
+{
+ struct GNUNET_PQ_QueryParam res =
+ { &qconv_uint64, NULL, x, sizeof (*x), 1 };
+ return res;
+}
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param data pointer to input argument
+ * @param data_len number of bytes in @a data (if applicable)
+ * @param[out] param_values SQL data to set
+ * @param[out] param_lengths SQL length data to set
+ * @param[out] param_formats SQL format data to set
+ * @param param_length number of entries available in the @a param_values, @a param_lengths and @a param_formats arrays
+ * @param[out] scratch buffer for dynamic allocations (to be done via #GNUNET_malloc()
+ * @param scratch_length number of entries left in @a scratch
+ * @return -1 on error, number of offsets used in @a scratch otherwise
+ */
+static int
+qconv_rsa_public_key (void *cls,
+ const void *data,
+ size_t data_len,
+ void *param_values[],
+ int param_lengths[],
+ int param_formats[],
+ unsigned int param_length,
+ void *scratch[],
+ unsigned int scratch_length)
+{
+ const struct GNUNET_CRYPTO_rsa_PublicKey *rsa = data;
+ char *buf;
+ size_t buf_size;
+
+ GNUNET_break (NULL == cls);
+ if (1 != param_length)
+ return -1;
+ buf_size = GNUNET_CRYPTO_rsa_public_key_encode (rsa,
+ &buf);
+ scratch[0] = buf;
+ param_values[0] = (void *) buf;
+ param_lengths[0] = buf_size - 1; /* DB doesn't like the trailing \0 */
+ param_formats[0] = 1;
+ return 1;
+}
+
+
+/**
+ * Generate query parameter for an RSA public key. The
+ * database must contain a BLOB type in the respective position.
+ *
+ * @param x the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_rsa_public_key (const struct GNUNET_CRYPTO_rsa_PublicKey *x)
+{
+ struct GNUNET_PQ_QueryParam res =
+ { &qconv_rsa_public_key, NULL, (x), 0, 1 };
+ return res;
+}
+
+
+/**
+ * Function called to convert input argument into SQL parameters.
+ *
+ * @param cls closure
+ * @param data pointer to input argument
+ * @param data_len number of bytes in @a data (if applicable)
+ * @param[out] param_values SQL data to set
+ * @param[out] param_lengths SQL length data to set
+ * @param[out] param_formats SQL format data to set
+ * @param param_length number of entries available in the @a param_values, @a param_lengths and @a param_formats arrays
+ * @param[out] scratch buffer for dynamic allocations (to be done via #GNUNET_malloc()
+ * @param scratch_length number of entries left in @a scratch
+ * @return -1 on error, number of offsets used in @a scratch otherwise
+ */
+static int
+qconv_rsa_signature (void *cls,
+ const void *data,
+ size_t data_len,
+ void *param_values[],
+ int param_lengths[],
+ int param_formats[],
+ unsigned int param_length,
+ void *scratch[],
+ unsigned int scratch_length)
+{
+ const struct GNUNET_CRYPTO_rsa_Signature *sig = data;
+ char *buf;
+ size_t buf_size;
+
+ GNUNET_break (NULL == cls);
+ if (1 != param_length)
+ return -1;
+ buf_size = GNUNET_CRYPTO_rsa_signature_encode (sig,
+ &buf);
+ scratch[0] = buf;
+ param_values[0] = (void *) buf;
+ param_lengths[0] = buf_size - 1; /* DB doesn't like the trailing \0 */
+ param_formats[0] = 1;
+ return 1;
+}
+
+
+/**
+ * Generate query parameter for an RSA signature. The
+ * database must contain a BLOB type in the respective position.
+ *
+ * @param x the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_rsa_signature (const struct GNUNET_CRYPTO_rsa_Signature *x)
+{
+ struct GNUNET_PQ_QueryParam res =
+ { &qconv_rsa_signature, NULL, (x), 0, 1 };
+ return res;
+}
+
+
+/**
+ * Generate query parameter for an absolute time value.
+ * The database must store a 64-bit integer.
+ *
+ * @param x pointer to the query parameter to pass
+ * @return array entry for the query parameters to use
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_absolute_time (const struct GNUNET_TIME_Absolute *x)
+{
+ return GNUNET_PQ_query_param_uint64 (&x->abs_value_us);
+}
+
+
+/**
+ * Generate query parameter for an absolute time value.
+ * The database must store a 64-bit integer.
+ *
+ * @param x pointer to the query parameter to pass
+ */
+struct GNUNET_PQ_QueryParam
+GNUNET_PQ_query_param_absolute_time_nbo(const struct GNUNET_TIME_AbsoluteNBO *x)
+{
+ return GNUNET_PQ_query_param_auto_from_type (&x->abs_value_us__);
+}
+
+
+/* end of pq_query_helper.c */