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 */