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move to new libgnunetpq library, simplifying libtalerpq

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This commit is contained in:
Christian Grothoff 2016-02-06 17:39:18 +01:00
parent a396f4e7fa
commit 2b5a7c8748
9 changed files with 974 additions and 2279 deletions
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532
src/include/taler_pq_lib.h
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@ -1,6 +1,6 @@
/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
Copyright (C) 2014, 2015, 2016 GNUnet e.V.
TALER 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
@ -24,129 +24,9 @@
#define TALER_PQ_LIB_H_
#include <libpq-fe.h>
#include <gnunet/gnunet_pq_lib.h>
#include "taler_util.h"
/**
* Different formats of results that can be added to a query.
*/
enum TALER_PQ_QueryFormat
{
/**
* List terminator.
*/
TALER_PQ_QF_END,
/**
* We have a fixed-size result (binary blob, no endianess conversion).
*/
TALER_PQ_QF_FIXED_BLOB,
/**
* We have a variable-size result (binary blob, no endianess conversion).
*/
TALER_PQ_QF_VARSIZE_BLOB,
/**
* We have a currency amount (with endianess conversion).
* Data points to a `struct TALER_AmountNBO`, size is only used to check.
*/
TALER_PQ_QF_AMOUNT_NBO,
/**
* We have a currency amount (with endianess conversion).
* Data points to a `struct TALER_Amount`, size is only used to check.
*/
TALER_PQ_QF_AMOUNT,
/**
* We have an RSA public key.
* Data points to a `struct GNUNET_CRYPTO_rsa_PublicKey`, size is not used.
*/
TALER_PQ_QF_RSA_PUBLIC_KEY,
/**
* We have an RSA signature.
* Data points to a `struct GNUNET_CRYPTO_rsa_Signature`, size is not used.
*/
TALER_PQ_QF_RSA_SIGNATURE,
/**
* We have an absolute time.
* Data points to a `struct GNUNET_TIME_Absolute`, size is only used to check.
*/
TALER_PQ_QF_TIME_ABSOLUTE,
/**
* We expect an uint16_t (in host byte order).
*/
TALER_PQ_QF_UINT16,
/**
* We expect an uint32_t (in host byte order).
*/
TALER_PQ_QF_UINT32,
/**
* We expect an uint64_t (in host byte order).
*/
TALER_PQ_QF_UINT64,
/**
* We expect a JSON object (json_t).
*/
TALER_PQ_QF_JSON
};
/**
* @brief Description of a DB query parameter.
*/
struct TALER_PQ_QueryParam
{
/**
* Format of the rest of the entry, determines the data
* type that is being added to the query.
*/
enum TALER_PQ_QueryFormat format;
/**
* Data or NULL.
*/
const void *data;
/**
* Size of @e data
*/
size_t size;
};
/**
* End of query parameter specification.
*/
#define TALER_PQ_query_param_end { TALER_PQ_QF_END, NULL, 0 }
/**
* Generate fixed-size query parameter with size given explicitly.
*
* @param x pointer to the query parameter to pass
* @param s number of bytes of @a x to use for the query
*/
#define TALER_PQ_query_param_fixed_size(x,s) { TALER_PQ_QF_FIXED_BLOB, (x), (s) }
/**
* Generate fixed-size query parameter with size determined
* by variable type.
*
* @param x pointer to the query parameter to pass.
*/
#define TALER_PQ_query_param_auto_from_type(x) { TALER_PQ_QF_VARSIZE_BLOB, x, sizeof (*(x)) }
/**
* Generate query parameter for a currency, consisting of the three
* components "value", "fraction" and "currency" in this order. The
@ -155,7 +35,7 @@ struct TALER_PQ_QueryParam
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
struct GNUNET_PQ_QueryParam
TALER_PQ_query_param_amount_nbo (const struct TALER_AmountNBO *x);
@ -167,77 +47,10 @@ TALER_PQ_query_param_amount_nbo (const struct TALER_AmountNBO *x);
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
struct GNUNET_PQ_QueryParam
TALER_PQ_query_param_amount (const struct TALER_Amount *x);
/**
* 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.
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_rsa_public_key (const struct GNUNET_CRYPTO_rsa_PublicKey *x);
/**
* 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
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_rsa_signature (const struct GNUNET_CRYPTO_rsa_Signature *x);
/**
* 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 TALER_PQ_QueryParam
TALER_PQ_query_param_absolute_time (const struct GNUNET_TIME_Absolute *x);
/**
* 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 TALER_PQ_QueryParam
TALER_PQ_query_param_absolute_time_nbo (const struct GNUNET_TIME_AbsoluteNBO *x);
/**
* Generate query parameter for an uint16_t in host byte order.
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_uint16 (const uint16_t *x);
/**
* Generate query parameter for an uint32_t in host byte order.
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_uint32 (const uint32_t *x);
/**
* Generate query parameter for an uint16_t in host byte order.
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_uint64 (const uint64_t *x);
/**
* Generate query parameter for a JSON object (stored as a string
* in the DB). Note that @a x must really be a JSON object or array,
@ -246,162 +59,10 @@ TALER_PQ_query_param_uint64 (const uint64_t *x);
*
* @param x pointer to the json object to pass
*/
struct TALER_PQ_QueryParam
struct GNUNET_PQ_QueryParam
TALER_PQ_query_param_json (const json_t *x);
/**
* Different formats of results that can be extracted.
*/
enum TALER_PQ_ResultFormat
{
/**
* List terminator.
*/
TALER_PQ_RF_END,
/**
* We expect a fixed-size result (binary blob, no endianess conversion).
*/
TALER_PQ_RF_FIXED_BLOB,
/**
* We expect a variable-size result (binary blob, no endianess conversion).
*/
TALER_PQ_RF_VARSIZE_BLOB,
/**
* We expect a currency amount.
* Data points to a `struct TALER_AmountNBO`, size only used for checking.
*/
TALER_PQ_RF_AMOUNT_NBO,
/**
* We expect a currency amount.
* Data points to a `struct TALER_Amount`, size only used for checking.
*/
TALER_PQ_RF_AMOUNT,
/**
* We expect an RSA public key.
* Data points to a `struct GNUNET_CRYPTO_rsa_PublicKey **`, size is not used.
*/
TALER_PQ_RF_RSA_PUBLIC_KEY,
/**
* We expect an RSA signature.
* Data points to a `struct GNUNET_CRYPTO_rsa_Signature **`, size is not used.
*/
TALER_PQ_RF_RSA_SIGNATURE,
/**
* We expect an absolute time.
* Data points to a `struct GNUNET_TIME_Absolute`, size is only used for checking.
*/
TALER_PQ_RF_TIME_ABSOLUTE,
/**
* We expect an uint16_t (in host byte order).
*/
TALER_PQ_RF_UINT16,
/**
* We expect an uint32_t (in host byte order).
*/
TALER_PQ_RF_UINT32,
/**
* We expect an uint64_t (in host byte order).
*/
TALER_PQ_RF_UINT64,
/**
* We expect a JSON object (json_t).
*/
TALER_PQ_RF_JSON
};
/**
* @brief Description of a DB result cell.
*/
struct TALER_PQ_ResultSpec
{
/**
* What is the format of the result?
*/
enum TALER_PQ_ResultFormat format;
/**
* Destination for the data.
*/
void *dst;
/**
* Allowed size for the data, 0 for variable-size
* (in this case, the type of @e dst is a `void **`
* and we need to allocate a buffer of the right size).
*/
size_t dst_size;
/**
* Field name of the desired result.
*/
const char *fname;
/**
* Where to store actual size of the result.
*/
size_t *result_size;
};
/**
* End of result parameter specification.
*
* @return array last entry for the result specification to use
*/
#define TALER_PQ_result_spec_end { TALER_PQ_RF_END, NULL, 0, NULL, NULL }
/**
* We expect a fixed-size result, with size given explicitly
*
* @param name name of the field in the table
* @param dst point to where to store the result
* @param s number of bytes we should use in @a dst
* @return array entry for the result specification to use
*/
#define TALER_PQ_result_spec_fixed_size(name, dst, s) { TALER_PQ_RF_FIXED_BLOB, (void *) (dst), (s), (name), NULL }
/**
* We expect a fixed-size result, with size determined by the type of `* dst`
*
* @param name name of the field in the table
* @param dst point to where to store the result, type fits expected result size
* @return array entry for the result specification to use
*/
#define TALER_PQ_result_spec_auto_from_type(name, dst) { TALER_PQ_RF_FIXED_BLOB, (void *) (dst), sizeof (*(dst)), name, NULL }
/**
* Variable-size result expected.
*
* @param name name of the field in the table
* @param[out] dst where to store the result, allocated
* @param[out] sptr where to store the size of @a dst
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_variable_size (const char *name,
void **dst,
size_t *sptr);
/**
* Currency amount expected.
*
@ -409,7 +70,7 @@ TALER_PQ_result_spec_variable_size (const char *name,
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
struct GNUNET_PQ_ResultSpec
TALER_PQ_result_spec_amount_nbo (const char *name,
struct TALER_AmountNBO *amount);
@ -421,95 +82,11 @@ TALER_PQ_result_spec_amount_nbo (const char *name,
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
struct GNUNET_PQ_ResultSpec
TALER_PQ_result_spec_amount (const char *name,
struct TALER_Amount *amount);
/**
* RSA public key expected.
*
* @param name name of the field in the table
* @param[out] rsa where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_rsa_public_key (const char *name,
struct GNUNET_CRYPTO_rsa_PublicKey **rsa);
/**
* RSA signature expected.
*
* @param name name of the field in the table
* @param[out] sig where to store the result;
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_rsa_signature (const char *name,
struct GNUNET_CRYPTO_rsa_Signature **sig);
/**
* Absolute time expected.
*
* @param name name of the field in the table
* @param[out] at where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_absolute_time (const char *name,
struct GNUNET_TIME_Absolute *at);
/**
* Absolute time expected.
*
* @param name name of the field in the table
* @param[out] at where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_absolute_time_nbo (const char *name,
struct GNUNET_TIME_AbsoluteNBO *at);
/**
* uint16_t expected.
*
* @param name name of the field in the table
* @param[out] u16 where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_uint16 (const char *name,
uint16_t *u16);
/**
* uint32_t expected.
*
* @param name name of the field in the table
* @param[out] u32 where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_uint32 (const char *name,
uint32_t *u32);
/**
* uint64_t expected.
*
* @param name name of the field in the table
* @param[out] u64 where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_uint64 (const char *name,
uint64_t *u64);
/**
* json_t expected.
*
@ -517,104 +94,11 @@ TALER_PQ_result_spec_uint64 (const char *name,
* @param[out] jp where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
struct GNUNET_PQ_ResultSpec
TALER_PQ_result_spec_json (const char *name,
json_t **jp);
/**
* Execute a prepared statement.
*
* @param db_conn database connection
* @param name name of the prepared statement
* @param params parameters to the statement
* @return postgres result
*/
PGresult *
TALER_PQ_exec_prepared (PGconn *db_conn,
const char *name,
const struct TALER_PQ_QueryParam *params);
/**
* Extract results from a query result according to the given specification.
* If colums are NULL, the destination is not modified, and #GNUNET_NO
* is returned.
*
* @param result result to process
* @param[in,out] rs result specification to extract for
* @param row row from the result to extract
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
int
TALER_PQ_extract_result (PGresult *result,
struct TALER_PQ_ResultSpec *rs,
int row);
/**
* Free all memory that was allocated in @a rs during
* #TALER_PQ_extract_result().
*
* @param rs reult specification to clean up
*/
void
TALER_PQ_cleanup_result (struct TALER_PQ_ResultSpec *rs);
/**
* Extract a currency amount from a query result according to the
* given specification.
*
* @param result the result to extract the amount from
* @param row which row of the result to extract the amount from (needed as results can have multiple rows)
* @param val_name name of the column with the amount's "value", must include the substring "_val".
* @param frac_name name of the column with the amount's "fractional" value, must include the substring "_frac".
* @param curr_name name of the column with the amount's currency name, must include the substring "_curr".
* @param[out] r_amount_nbo where to store the amount, in network byte order
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
int
TALER_PQ_extract_amount_nbo (PGresult *result,
int row,
const char *val_name,
const char *frac_name,
const char *curr_name,
struct TALER_AmountNBO *r_amount_nbo);
/**
* Extract a currency amount from a query result according to the
* given specification.
*
* @param result the result to extract the amount from
* @param row which row of the result to extract the amount from (needed as results can have multiple rows)
* @param val_name name of the column with the amount's "value", must include the substring "_val".
* @param frac_name name of the column with the amount's "fractional" value, must include the substring "_frac".
* @param curr_name name of the column with the amount's currency name, must include the substring "_curr".
* @param[out] r_amount where to store the amount, in host byte order
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
int
TALER_PQ_extract_amount (PGresult *result,
int row,
const char *val_name,
const char *frac_name,
const char *curr_name,
struct TALER_Amount *r_amount);
#endif /* TALER_PQ_LIB_H_ */
/* end of include/taler_pq_lib.h */

1
src/mintdb/Makefile.am
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@ -26,6 +26,7 @@ libtaler_plugin_mintdb_postgres_la_LDFLAGS = \
$(top_builddir)/src/pq/libtalerpq.la \
$(top_builddir)/src/util/libtalerutil.la \
-lpq \
-lgnunetpq \
-lgnunetutil $(XLIB)
lib_LTLIBRARIES = \

740
src/mintdb/plugin_mintdb_postgres.c
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File diff suppressed because it is too large Load Diff

8
src/pq/Makefile.am
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@ -12,8 +12,8 @@ lib_LTLIBRARIES = \
libtalerpq.la
libtalerpq_la_SOURCES = \
db_pq.c \
pq_helper.c
pq_query_helper.c \
pq_result_helper.c
libtalerpq_la_LIBADD = \
$(top_builddir)/src/util/libtalerutil.la \
@ -36,5 +36,7 @@ test_pq_SOURCES = \
test_pq_LDADD = \
libtalerpq.la \
$(top_builddir)/src/util/libtalerutil.la \
-lgnunetutil -ljansson \
-lgnunetpq \
-lgnunetutil \
-ljansson \
-lpq $(XLIB)

883
src/pq/db_pq.c
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@ -1,883 +0,0 @@
/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
TALER 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.
TALER 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
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pq/db_pq.c
* @brief helper functions for libpq (PostGres) interactions
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
* @author Florian Dold
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include "taler_pq_lib.h"
/**
* Execute a prepared statement.
*
* @param db_conn database connection
* @param name name of the prepared statement
* @param params parameters to the statement
* @return postgres result
*/
PGresult *
TALER_PQ_exec_prepared (PGconn *db_conn,
const char *name,
const struct TALER_PQ_QueryParam *params)
{
unsigned int len;
unsigned int i;
/* count the number of parameters */
i = 0;
len = 0;
while (TALER_PQ_QF_END != params[i].format)
{
const struct TALER_PQ_QueryParam *x = &params[i];
switch (x->format)
{
case TALER_PQ_QF_FIXED_BLOB:
case TALER_PQ_QF_VARSIZE_BLOB:
len++;
break;
case TALER_PQ_QF_AMOUNT_NBO:
case TALER_PQ_QF_AMOUNT:
len += 3;
break;
case TALER_PQ_QF_RSA_PUBLIC_KEY:
case TALER_PQ_QF_RSA_SIGNATURE:
case TALER_PQ_QF_TIME_ABSOLUTE:
case TALER_PQ_QF_UINT16:
case TALER_PQ_QF_UINT32:
case TALER_PQ_QF_UINT64:
case TALER_PQ_QF_JSON:
len++;
break;
default:
/* format not supported */
GNUNET_assert (0);
break;
}
i++;
}
/* new scope to allow stack allocation without alloca */
{
/* Scratch buffer for temporary storage */
void *scratch[len];
/* Parameter array we are building for the query */
void *param_values[len];
int param_lengths[len];
int param_formats[len];
unsigned int off;
/* How many entries in the scratch buffer are in use? */
unsigned int soff;
PGresult *res;
i = 0;
off = 0;
soff = 0;
while (TALER_PQ_QF_END != params[i].format)
{
const struct TALER_PQ_QueryParam *x = &params[i];
switch (x->format)
{
case TALER_PQ_QF_FIXED_BLOB:
case TALER_PQ_QF_VARSIZE_BLOB:
param_values[off] = (void *) x->data;
param_lengths[off] = x->size;
param_formats[off] = 1;
off++;
break;
case TALER_PQ_QF_AMOUNT_NBO:
{
const struct TALER_Amount *amount = x->data;
param_values[off] = (void *) &amount->value;
param_lengths[off] = sizeof (amount->value);
param_formats[off] = 1;
off++;
param_values[off] = (void *) &amount->fraction;
param_lengths[off] = sizeof (amount->fraction);
param_formats[off] = 1;
off++;
param_values[off] = (void *) amount->currency;
param_lengths[off] = strlen (amount->currency);
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_AMOUNT:
{
const struct TALER_Amount *amount_hbo = x->data;
struct TALER_AmountNBO *amount;
amount = GNUNET_new (struct TALER_AmountNBO);
scratch[soff++] = amount;
TALER_amount_hton (amount,
amount_hbo);
param_values[off] = (void *) &amount->value;
param_lengths[off] = sizeof (amount->value);
param_formats[off] = 1;
off++;
param_values[off] = (void *) &amount->fraction;
param_lengths[off] = sizeof (amount->fraction);
param_formats[off] = 1;
off++;
param_values[off] = (void *) amount->currency;
param_lengths[off] = strlen (amount->currency);
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_RSA_PUBLIC_KEY:
{
const struct GNUNET_CRYPTO_rsa_PublicKey *rsa = x->data;
char *buf;
size_t buf_size;
buf_size = GNUNET_CRYPTO_rsa_public_key_encode (rsa,
&buf);
scratch[soff++] = buf;
param_values[off] = (void *) buf;
param_lengths[off] = buf_size - 1; /* DB doesn't like the trailing \0 */
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_RSA_SIGNATURE:
{
const struct GNUNET_CRYPTO_rsa_Signature *sig = x->data;
char *buf;
size_t buf_size;
buf_size = GNUNET_CRYPTO_rsa_signature_encode (sig,
&buf);
scratch[soff++] = buf;
param_values[off] = (void *) buf;
param_lengths[off] = buf_size - 1; /* DB doesn't like the trailing \0 */
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_TIME_ABSOLUTE:
{
const struct GNUNET_TIME_Absolute *at_hbo = x->data;
struct GNUNET_TIME_AbsoluteNBO *at_nbo;
at_nbo = GNUNET_new (struct GNUNET_TIME_AbsoluteNBO);
scratch[soff++] = at_nbo;
*at_nbo = GNUNET_TIME_absolute_hton (*at_hbo);
param_values[off] = (void *) at_nbo;
param_lengths[off] = sizeof (struct GNUNET_TIME_AbsoluteNBO);
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_UINT16:
{
const uint16_t *u_hbo = x->data;
uint16_t *u_nbo;
u_nbo = GNUNET_new (uint16_t);
scratch[soff++] = u_nbo;
*u_nbo = htons (*u_hbo);
param_values[off] = (void *) u_nbo;
param_lengths[off] = sizeof (uint16_t);
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_UINT32:
{
const uint32_t *u_hbo = x->data;
uint32_t *u_nbo;
u_nbo = GNUNET_new (uint32_t);
scratch[soff++] = u_nbo;
*u_nbo = htonl (*u_hbo);
param_values[off] = (void *) u_nbo;
param_lengths[off] = sizeof (uint32_t);
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_UINT64:
{
const uint64_t *u_hbo = x->data;
uint64_t *u_nbo;
u_nbo = GNUNET_new (uint64_t);
scratch[soff++] = u_nbo;
*u_nbo = GNUNET_htonll (*u_hbo);
param_values[off] = (void *) u_nbo;
param_lengths[off] = sizeof (uint64_t);
param_formats[off] = 1;
off++;
}
break;
case TALER_PQ_QF_JSON:
{
const json_t *json = x->data;
char *str;
str = json_dumps (json, JSON_COMPACT);
GNUNET_assert (NULL != str);
scratch[soff++] = str;
param_values[off] = (void *) str;
param_lengths[off] = strlen (str);
param_formats[off] = 1;
off++;
}
break;
default:
/* format not supported */
GNUNET_assert (0);
break;
}
i++;
}
GNUNET_assert (off == len);
res = PQexecPrepared (db_conn,
name,
len,
(const char **) param_values,
param_lengths,
param_formats,
1);
for (off = 0; off < soff; off++)
GNUNET_free (scratch[off]);
return res;
}
}
/**
* Free all memory that was allocated in @a rs during
* #TALER_PQ_extract_result().
*
* @param rs reult specification to clean up
*/
void
TALER_PQ_cleanup_result (struct TALER_PQ_ResultSpec *rs)
{
unsigned int i;
for (i=0; TALER_PQ_RF_END != rs[i].format; i++)
{
switch (rs[i].format)
{
case TALER_PQ_RF_VARSIZE_BLOB:
{
void **dst = rs[i].dst;
if (NULL != *dst)
{
GNUNET_free (*dst);
*dst = NULL;
*rs[i].result_size = 0;
}
break;
}
case TALER_PQ_RF_RSA_PUBLIC_KEY:
{
void **dst = rs[i].dst;
if (NULL != *dst)
{
GNUNET_CRYPTO_rsa_public_key_free (*dst);
*dst = NULL;
}
break;
}
case TALER_PQ_RF_RSA_SIGNATURE:
{
void **dst = rs[i].dst;
if (NULL != *dst)
{
GNUNET_CRYPTO_rsa_signature_free (*dst);
*dst = NULL;
}
}
break;
default:
break;
}
}
}
/**
* Extract results from a query result according to the given specification.
* If colums are NULL, the destination is not modified, and #GNUNET_NO
* is returned.
*
* @param result result to process
* @param[in,out] rs result specification to extract for
* @param row row from the result to extract
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
int
TALER_PQ_extract_result (PGresult *result,
struct TALER_PQ_ResultSpec *rs,
int row)
{
unsigned int i;
int had_null = GNUNET_NO;
for (i=0; TALER_PQ_RF_END != rs[i].format; i++)
{
struct TALER_PQ_ResultSpec *spec;
spec = &rs[i];
switch (spec->format)
{
case TALER_PQ_RF_FIXED_BLOB:
case TALER_PQ_RF_VARSIZE_BLOB:
{
size_t len;
const char *res;
void *dst;
int fnum;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
/* if a field is null, continue but
* remember that we now return a different result */
len = PQgetlength (result,
row,
fnum);
if ( (0 != spec->dst_size) &&
(spec->dst_size != len) )
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' has wrong size (got %u, expected %u)\n",
spec->fname,
(unsigned int) len,
(unsigned int) spec->dst_size);
TALER_PQ_cleanup_result (rs);
return GNUNET_SYSERR;
}
res = PQgetvalue (result,
row,
fnum);
GNUNET_assert (NULL != res);
if (0 == spec->dst_size)
{
if (NULL != spec->result_size)
*spec->result_size = len;
spec->dst_size = len;
dst = GNUNET_malloc (len);
*((void **) spec->dst) = dst;
}
else
dst = spec->dst;
memcpy (dst,
res,
len);
break;
}
case TALER_PQ_RF_AMOUNT_NBO:
{
char *val_name;
char *frac_name;
char *curr_name;
const char *name = spec->fname;
int ret;
GNUNET_assert (NULL != spec->dst);
GNUNET_assert (sizeof (struct TALER_AmountNBO) ==
spec->dst_size);
GNUNET_asprintf (&val_name,
"%s_val",
name);
GNUNET_asprintf (&frac_name,
"%s_frac",
name);
GNUNET_asprintf (&curr_name,
"%s_curr",
name);
ret = TALER_PQ_extract_amount_nbo (result,
row,
val_name,
frac_name,
curr_name,
spec->dst);
GNUNET_free (val_name);
GNUNET_free (frac_name);
GNUNET_free (curr_name);
if (GNUNET_SYSERR == ret)
return GNUNET_SYSERR;
if (GNUNET_OK != ret)
had_null = GNUNET_YES;
break;
}
case TALER_PQ_RF_AMOUNT:
{
char *val_name;
char *frac_name;
char *curr_name;
const char *name = spec->fname;
int ret;
GNUNET_assert (NULL != spec->dst);
GNUNET_assert (sizeof (struct TALER_Amount) ==
spec->dst_size);
GNUNET_asprintf (&val_name,
"%s_val",
name);
GNUNET_asprintf (&frac_name,
"%s_frac",
name);
GNUNET_asprintf (&curr_name,
"%s_curr",
name);
ret = TALER_PQ_extract_amount (result,
row,
val_name,
frac_name,
curr_name,
spec->dst);
GNUNET_free (val_name);
GNUNET_free (frac_name);
GNUNET_free (curr_name);
if (GNUNET_SYSERR == ret)
return GNUNET_SYSERR;
if (GNUNET_OK != ret)
had_null = GNUNET_YES;
break;
}
case TALER_PQ_RF_RSA_PUBLIC_KEY:
{
struct GNUNET_CRYPTO_rsa_PublicKey **pk = spec->dst;
size_t len;
const char *res;
int fnum;
*pk = NULL;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
/* if a field is null, continue but
* remember that we now return a different result */
len = PQgetlength (result,
row,
fnum);
res = PQgetvalue (result,
row,
fnum);
*pk = GNUNET_CRYPTO_rsa_public_key_decode (res,
len);
if (NULL == *pk)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' contains bogus value (fails to decode)\n",
spec->fname);
return GNUNET_SYSERR;
}
break;
}
case TALER_PQ_RF_RSA_SIGNATURE:
{
struct GNUNET_CRYPTO_rsa_Signature **sig = spec->dst;
size_t len;
const char *res;
int fnum;
*sig = NULL;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
/* if a field is null, continue but
* remember that we now return a different result */
len = PQgetlength (result,
row,
fnum);
res = PQgetvalue (result,
row,
fnum);
*sig = GNUNET_CRYPTO_rsa_signature_decode (res,
len);
if (NULL == *sig)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' contains bogus value (fails to decode)\n",
spec->fname);
return GNUNET_SYSERR;
}
break;
}
case TALER_PQ_RF_TIME_ABSOLUTE:
{
struct GNUNET_TIME_Absolute *dst = spec->dst;
const struct GNUNET_TIME_AbsoluteNBO *res;
int fnum;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
GNUNET_assert (NULL != dst);
GNUNET_assert (sizeof (struct GNUNET_TIME_AbsoluteNBO) ==
spec->dst_size);
res = (const struct GNUNET_TIME_AbsoluteNBO *)
PQgetvalue (result,
row,
fnum);
*dst = GNUNET_TIME_absolute_ntoh (*res);
break;
}
case TALER_PQ_RF_UINT16:
{
uint16_t *dst = spec->dst;
const uint16_t *res;
int fnum;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
GNUNET_assert (NULL != dst);
GNUNET_assert (sizeof (uint16_t) ==
spec->dst_size);
res = (uint16_t *) PQgetvalue (result,
row,
fnum);
*dst = ntohs (*res);
break;
}
case TALER_PQ_RF_UINT32:
{
uint32_t *dst = spec->dst;
const uint32_t *res;
int fnum;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
GNUNET_assert (NULL != dst);
GNUNET_assert (sizeof (uint32_t) ==
spec->dst_size);
res = (uint32_t *) PQgetvalue (result,
row,
fnum);
*dst = ntohl (*res);
break;
}
case TALER_PQ_RF_UINT64:
{
uint64_t *dst = spec->dst;
const uint64_t *res;
int fnum;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
GNUNET_assert (NULL != dst);
GNUNET_assert (sizeof (uint64_t) ==
spec->dst_size);
res = (uint64_t *) PQgetvalue (result,
row,
fnum);
*dst = GNUNET_ntohll (*res);
break;
}
case TALER_PQ_RF_JSON:
{
json_t **dst = spec->dst;
char *res;
int fnum;
json_error_t json_error;
size_t slen;
fnum = PQfnumber (result,
spec->fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
spec->fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
{
had_null = GNUNET_YES;
continue;
}
GNUNET_assert (NULL != dst);
GNUNET_break (0 == spec->dst_size);
slen = PQgetlength (result,
row,
fnum);
res = (char *) PQgetvalue (result,
row,
fnum);
*dst = json_loadb (res,
slen,
JSON_REJECT_DUPLICATES,
&json_error);
if (NULL == *dst)
{
TALER_json_warn (json_error);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to parse JSON result for field `%s'\n",
spec->fname);
return GNUNET_SYSERR;
}
break;
}
default:
GNUNET_assert (0);
break;
}
}
if (GNUNET_YES == had_null)
return GNUNET_NO;
return GNUNET_YES;
}
/**
* Extract a currency amount from a query result according to the
* given specification.
*
* @param result the result to extract the amount from
* @param row which row of the result to extract the amount from (needed as results can have multiple rows)
* @param val_name name of the column with the amount's "value", must include the substring "_val".
* @param frac_name name of the column with the amount's "fractional" value, must include the substring "_frac".
* @param curr_name name of the column with the amount's currency name, must include the substring "_curr".
* @param[out] r_amount_nbo where to store the amount, in network byte order
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
int
TALER_PQ_extract_amount_nbo (PGresult *result,
int row,
const char *val_name,
const char *frac_name,
const char *curr_name,
struct TALER_AmountNBO *r_amount_nbo)
{
int val_num;
int frac_num;
int curr_num;
int len;
/* These checks are simply to check that clients obey by our naming
conventions, and not for any functional reason */
GNUNET_assert (NULL !=
strstr (val_name,
"_val"));
GNUNET_assert (NULL !=
strstr (frac_name,
"_frac"));
GNUNET_assert (NULL !=
strstr (curr_name,
"_curr"));
/* Set return value to invalid in case we don't finish */
memset (r_amount_nbo,
0,
sizeof (struct TALER_AmountNBO));
val_num = PQfnumber (result,
val_name);
frac_num = PQfnumber (result,
frac_name);
curr_num = PQfnumber (result,
curr_name);
if ( (val_num < 0) ||
(frac_num < 0) ||
(curr_num < 0) )
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
if ( (PQgetisnull (result,
row,
val_num)) ||
(PQgetisnull (result,
row,
frac_num)) ||
(PQgetisnull (result,
row,
curr_num)) )
{
GNUNET_break (0);
return GNUNET_NO;
}
/* Note that Postgres stores value in NBO internally,
so no conversion needed in this case */
r_amount_nbo->value = *(uint64_t *) PQgetvalue (result,
row,
val_num);
r_amount_nbo->fraction = *(uint32_t *) PQgetvalue (result,
row,
frac_num);
len = GNUNET_MIN (TALER_CURRENCY_LEN - 1,
PQgetlength (result,
row,
curr_num));
memcpy (r_amount_nbo->currency,
PQgetvalue (result,
row,
curr_num),
len);
return GNUNET_OK;
}
/**
* Extract a currency amount from a query result according to the
* given specification.
*
* @param result the result to extract the amount from
* @param row which row of the result to extract the amount from (needed as
* results can have multiple rows)
* @param val_name name of the column with the amount's "value", must include
* the substring "_val".
* @param frac_name name of the column with the amount's "fractional" value,
* must include the substring "_frac".
* @param curr_name name of the column with the amount's currency name, must
* include the substring "_curr".
* @param[out] r_amount where to store the amount, in host byte order
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
int
TALER_PQ_extract_amount (PGresult *result,
int row,
const char *val_name,
const char *frac_name,
const char *curr_name,
struct TALER_Amount *r_amount)
{
struct TALER_AmountNBO amount_nbo;
int ret;
ret = TALER_PQ_extract_amount_nbo (result,
row,
val_name,
frac_name,
curr_name,
&amount_nbo);
TALER_amount_ntoh (r_amount,
&amount_nbo);
return ret;
}
/* end of pq/db_pq.c */

370
src/pq/pq_helper.c
View File

@ -1,370 +0,0 @@
/*
This file is part of TALER
Copyright (C) 2014, 2015 GNUnet e.V.
TALER 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.
TALER 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
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pq/pq_helper.c
* @brief functions to initialize parameter arrays
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include "taler_pq_lib.h"
/**
* Generate query parameter for a currency, consisting of the three
* components "value", "fraction" and "currency" in this order. The
* types must be a 64-bit integer, 32-bit integer and a
* #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
*
* @param x pointer to the query parameter to pass
* @return array entry for the query parameters to use
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_amount_nbo (const struct TALER_AmountNBO *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_AMOUNT_NBO, x, sizeof (*x) };
return res;
}
/**
* Generate query parameter for a currency, consisting of the three
* components "value", "fraction" and "currency" in this order. The
* types must be a 64-bit integer, 32-bit integer and a
* #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
*
* @param x pointer to the query parameter to pass
* @return array entry for the query parameters to use
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_amount (const struct TALER_Amount *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_AMOUNT, x, sizeof (*x) };
return res;
}
/**
* 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 TALER_PQ_QueryParam
TALER_PQ_query_param_rsa_public_key (const struct GNUNET_CRYPTO_rsa_PublicKey *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_RSA_PUBLIC_KEY, (x), 0 };
return res;
}
/**
* 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 TALER_PQ_QueryParam
TALER_PQ_query_param_rsa_signature (const struct GNUNET_CRYPTO_rsa_Signature *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_RSA_SIGNATURE, (x), 0 };
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 TALER_PQ_QueryParam
TALER_PQ_query_param_absolute_time (const struct GNUNET_TIME_Absolute *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_TIME_ABSOLUTE, x, sizeof (*x) };
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
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_absolute_time_nbo(const struct GNUNET_TIME_AbsoluteNBO *x)
{
struct TALER_PQ_QueryParam res =
TALER_PQ_query_param_auto_from_type (&x->abs_value_us__);
return res;
}
/**
* Generate query parameter for an uint16_t in host byte order.
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_uint16 (const uint16_t *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_UINT16, x, sizeof (*x) };
return res;
}
/**
* Generate query parameter for an uint32_t in host byte order.
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_uint32 (const uint32_t *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_UINT32, x, sizeof (*x) };
return res;
}
/**
* Generate query parameter for an uint16_t in host byte order.
*
* @param x pointer to the query parameter to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_uint64 (const uint64_t *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_UINT64, x, sizeof (*x) };
return res;
}
/**
* Generate query parameter for a JSON object (stored as a string
* in the DB).
*
* @param x pointer to the json object to pass
*/
struct TALER_PQ_QueryParam
TALER_PQ_query_param_json (const json_t *x)
{
struct TALER_PQ_QueryParam res =
{ TALER_PQ_QF_JSON, x, 0 };
return res;
}
/**
* Variable-size result expected.
*
* @param name name of the field in the table
* @param[out] dst where to store the result, allocated
* @param[out] sptr where to store the size of @a dst
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_variable_size (const char *name,
void **dst,
size_t *sptr)
{
struct TALER_PQ_ResultSpec res =
{ TALER_PQ_RF_VARSIZE_BLOB, (void *) (dst), 0, name, sptr };
return res;
}
/**
* Currency amount expected.
*
* @param name name of the field in the table
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_amount_nbo (const char *name,
struct TALER_AmountNBO *amount)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_AMOUNT_NBO, (void *) amount, sizeof (*amount), name, NULL };
return res;
}
/**
* Currency amount expected.
*
* @param name name of the field in the table
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_amount (const char *name,
struct TALER_Amount *amount)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_AMOUNT, (void *) amount, sizeof (*amount), name, NULL };
return res;
}
/**
* RSA public key expected.
*
* @param name name of the field in the table
* @param[out] rsa where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_rsa_public_key (const char *name,
struct GNUNET_CRYPTO_rsa_PublicKey **rsa)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_RSA_PUBLIC_KEY, (void *) rsa, 0, name, NULL };
return res;
}
/**
* RSA signature expected.
*
* @param name name of the field in the table
* @param[out] sig where to store the result;
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_rsa_signature (const char *name,
struct GNUNET_CRYPTO_rsa_Signature **sig)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_RSA_SIGNATURE, (void *) sig, 0, (name), NULL };
return res;
}
/**
* Absolute time expected.
*
* @param name name of the field in the table
* @param[out] at where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_absolute_time (const char *name,
struct GNUNET_TIME_Absolute *at)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_TIME_ABSOLUTE, (void *) at, sizeof (*at), (name), NULL };
return res;
}
/**
* Absolute time expected.
*
* @param name name of the field in the table
* @param[out] at where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_absolute_time_nbo (const char *name,
struct GNUNET_TIME_AbsoluteNBO *at)
{
struct TALER_PQ_ResultSpec res =
TALER_PQ_result_spec_auto_from_type(name, &at->abs_value_us__);
return res;
}
/**
* uint16_t expected.
*
* @param name name of the field in the table
* @param[out] u16 where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_uint16 (const char *name,
uint16_t *u16)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_UINT16, (void *) u16, sizeof (*u16), (name), NULL };
return res;
}
/**
* uint32_t expected.
*
* @param name name of the field in the table
* @param[out] u32 where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_uint32 (const char *name,
uint32_t *u32)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_UINT32, (void *) u32, sizeof (*u32), (name), NULL };
return res;
}
/**
* uint64_t expected.
*
* @param name name of the field in the table
* @param[out] u64 where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_uint64 (const char *name,
uint64_t *u64)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_UINT64, (void *) u64, sizeof (*u64), (name), NULL };
return res;
}
/**
* json_t expected.
*
* @param name name of the field in the table
* @param[out] jp where to store the result
* @return array entry for the result specification to use
*/
struct TALER_PQ_ResultSpec
TALER_PQ_result_spec_json (const char *name,
json_t **jp)
{
struct TALER_PQ_ResultSpec res =
{TALER_PQ_RF_JSON, (void *) jp, 0, (name), NULL };
return res;
}
/* end of pq_helper.c */

208
src/pq/pq_query_helper.c Normal file
View File

@ -0,0 +1,208 @@
/*
This file is part of TALER
Copyright (C) 2014, 2015, 2016 GNUnet e.V.
TALER 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.
TALER 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
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pq/pq_query_helper.c
* @brief helper functions for Taler-specific libpq (PostGres) interactions
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
* @author Florian Dold
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_pq_lib.h>
#include "taler_pq_lib.h"
/**
* Function called to convert input argument into SQL parameters.
*
* @param cls closure
* @param data pointer to input argument, here a `struct TALER_AmountNBO`
* @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_amount_nbo (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 TALER_AmountNBO *amount = data;
unsigned int off = 0;
GNUNET_assert (3 == param_length);
param_values[off] = (void *) &amount->value;
param_lengths[off] = sizeof (amount->value);
param_formats[off] = 1;
off++;
param_values[off] = (void *) &amount->fraction;
param_lengths[off] = sizeof (amount->fraction);
param_formats[off] = 1;
off++;
param_values[off] = (void *) amount->currency;
param_lengths[off] = strlen (amount->currency);
param_formats[off] = 1;
return 0;
}
/**
* Generate query parameter for a currency, consisting of the three
* components "value", "fraction" and "currency" in this order. The
* types must be a 64-bit integer, 32-bit integer and a
* #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
*
* @param x pointer to the query parameter to pass
* @return array entry for the query parameters to use
*/
struct GNUNET_PQ_QueryParam
TALER_PQ_query_param_amount_nbo (const struct TALER_AmountNBO *x)
{
struct GNUNET_PQ_QueryParam res =
{ &qconv_amount_nbo, NULL, x, sizeof (*x), 3 };
return res;
}
/**
* Function called to convert input argument into SQL parameters.
*
* @param cls closure
* @param data pointer to input argument, here a `struct TALER_Amount`
* @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_amount (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 TALER_Amount *amount_hbo = data;
struct TALER_AmountNBO *amount;
amount = GNUNET_new (struct TALER_AmountNBO);
scratch[0] = amount;
TALER_amount_hton (amount,
amount_hbo);
qconv_amount_nbo (cls,
amount,
sizeof (struct TALER_AmountNBO),
param_values,
param_lengths,
param_formats,
param_length,
&scratch[1],
scratch_length - 1);
return 1;
}
/**
* Generate query parameter for a currency, consisting of the three
* components "value", "fraction" and "currency" in this order. The
* types must be a 64-bit integer, 32-bit integer and a
* #TALER_CURRENCY_LEN-sized BLOB/VARCHAR respectively.
*
* @param x pointer to the query parameter to pass
* @return array entry for the query parameters to use
*/
struct GNUNET_PQ_QueryParam
TALER_PQ_query_param_amount (const struct TALER_Amount *x)
{
struct GNUNET_PQ_QueryParam res =
{ &qconv_amount, NULL, x, sizeof (*x), 3 };
return res;
}
/**
* Function called to convert input argument into SQL parameters.
*
* @param cls closure
* @param data pointer to input argument, here a `json_t *`
* @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_json (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 json_t *json = data;
char *str;
str = json_dumps (json, JSON_COMPACT);
if (NULL == str)
return -1;
scratch[0] = str;
param_values[0] = (void *) str;
param_lengths[0] = strlen (str);
param_formats[0] = 1;
return 1;
}
/**
* Generate query parameter for a JSON object (stored as a string
* in the DB).
*
* @param x pointer to the json object to pass
*/
struct GNUNET_PQ_QueryParam
TALER_PQ_query_param_json (const json_t *x)
{
struct GNUNET_PQ_QueryParam res =
{ &qconv_json, NULL, x, 0, 1 };
return res;
}
/* end of pq/pq_query_helper.c */

358
src/pq/pq_result_helper.c Normal file
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@ -0,0 +1,358 @@
/*
This file is part of TALER
Copyright (C) 2014, 2015, 2016 GNUnet e.V.
TALER 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.
TALER 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
TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pq/pq_result_helper.c
* @brief functions to initialize parameter arrays
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include "taler_pq_lib.h"
/**
* Extract a currency amount from a query result according to the
* given specification.
*
* @param result the result to extract the amount from
* @param row which row of the result to extract the amount from (needed as results can have multiple rows)
* @param val_name name of the column with the amount's "value", must include the substring "_val".
* @param frac_name name of the column with the amount's "fractional" value, must include the substring "_frac".
* @param curr_name name of the column with the amount's currency name, must include the substring "_curr".
* @param[out] r_amount_nbo where to store the amount, in network byte order
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
static int
extract_amount_nbo_helper (PGresult *result,
int row,
const char *val_name,
const char *frac_name,
const char *curr_name,
struct TALER_AmountNBO *r_amount_nbo)
{
int val_num;
int frac_num;
int curr_num;
int len;
/* These checks are simply to check that clients obey by our naming
conventions, and not for any functional reason */
GNUNET_assert (NULL !=
strstr (val_name,
"_val"));
GNUNET_assert (NULL !=
strstr (frac_name,
"_frac"));
GNUNET_assert (NULL !=
strstr (curr_name,
"_curr"));
/* Set return value to invalid in case we don't finish */
memset (r_amount_nbo,
0,
sizeof (struct TALER_AmountNBO));
val_num = PQfnumber (result,
val_name);
frac_num = PQfnumber (result,
frac_name);
curr_num = PQfnumber (result,
curr_name);
if ( (val_num < 0) ||
(frac_num < 0) ||
(curr_num < 0) )
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
if ( (PQgetisnull (result,
row,
val_num)) ||
(PQgetisnull (result,
row,
frac_num)) ||
(PQgetisnull (result,
row,
curr_num)) )
{
GNUNET_break (0);
return GNUNET_NO;
}
/* Note that Postgres stores value in NBO internally,
so no conversion needed in this case */
r_amount_nbo->value = *(uint64_t *) PQgetvalue (result,
row,
val_num);
r_amount_nbo->fraction = *(uint32_t *) PQgetvalue (result,
row,
frac_num);
len = GNUNET_MIN (TALER_CURRENCY_LEN - 1,
PQgetlength (result,
row,
curr_num));
memcpy (r_amount_nbo->currency,
PQgetvalue (result,
row,
curr_num),
len);
return GNUNET_OK;
}
/**
* 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
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
static int
extract_amount_nbo (void *cls,
PGresult *result,
int row,
const char *fname,
size_t *dst_size,
void *dst)
{
char *val_name;
char *frac_name;
char *curr_name;
int ret;
GNUNET_asprintf (&val_name,
"%s_val",
fname);
GNUNET_asprintf (&frac_name,
"%s_frac",
fname);
GNUNET_asprintf (&curr_name,
"%s_curr",
fname);
ret = extract_amount_nbo_helper (result,
row,
val_name,
frac_name,
curr_name,
dst);
GNUNET_free (val_name);
GNUNET_free (frac_name);
GNUNET_free (curr_name);
return ret;
}
/**
* Currency amount expected.
*
* @param name name of the field in the table
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct GNUNET_PQ_ResultSpec
TALER_PQ_result_spec_amount_nbo (const char *name,
struct TALER_AmountNBO *amount)
{
struct GNUNET_PQ_ResultSpec res =
{ &extract_amount_nbo, NULL, NULL,
(void *) amount, sizeof (*amount),
name, NULL };
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
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
static int
extract_amount (void *cls,
PGresult *result,
int row,
const char *fname,
size_t *dst_size,
void *dst)
{
struct TALER_Amount *r_amount = dst;
char *val_name;
char *frac_name;
char *curr_name;
struct TALER_AmountNBO amount_nbo;
int ret;
GNUNET_asprintf (&val_name,
"%s_val",
fname);
GNUNET_asprintf (&frac_name,
"%s_frac",
fname);
GNUNET_asprintf (&curr_name,
"%s_curr",
fname);
ret = extract_amount_nbo_helper (result,
row,
val_name,
frac_name,
curr_name,
&amount_nbo);
TALER_amount_ntoh (r_amount,
&amount_nbo);
GNUNET_free (val_name);
GNUNET_free (frac_name);
GNUNET_free (curr_name);
return ret;
}
/**
* Currency amount expected.
*
* @param name name of the field in the table
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct GNUNET_PQ_ResultSpec
TALER_PQ_result_spec_amount (const char *name,
struct TALER_Amount *amount)
{
struct GNUNET_PQ_ResultSpec res =
{ &extract_amount, NULL, NULL,
(void *) amount, sizeof (*amount),
name, NULL };
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
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_NO if at least one result was NULL
* #GNUNET_SYSERR if a result was invalid (non-existing field)
*/
static int
extract_json (void *cls,
PGresult *result,
int row,
const char *fname,
size_t *dst_size,
void *dst)
{
json_t **j_dst = dst;
const char *res;
int fnum;
json_error_t json_error;
size_t slen;
fnum = PQfnumber (result,
fname);
if (fnum < 0)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Field `%s' does not exist in result\n",
fname);
return GNUNET_SYSERR;
}
if (PQgetisnull (result,
row,
fnum))
return GNUNET_NO;
slen = PQgetlength (result,
row,
fnum);
res = (const char *) PQgetvalue (result,
row,
fnum);
*j_dst = json_loadb (res,
slen,
JSON_REJECT_DUPLICATES,
&json_error);
if (NULL == *j_dst)
{
TALER_json_warn (json_error);
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Failed to parse JSON result for field `%s'\n",
fname);
return GNUNET_SYSERR;
}
return GNUNET_OK;
}
/**
* Function called to clean up memory allocated
* by a #GNUNET_PQ_ResultConverter.
*
* @param cls closure
* @param rd result data to clean up
*/
static void
clean_json (void *cls,
void *rd)
{
json_t **dst = rd;
if (NULL != *dst)
{
json_decref (*dst);
*dst = NULL;
}
}
/**
* json_t expected.
*
* @param name name of the field in the table
* @param[out] jp where to store the result
* @return array entry for the result specification to use
*/
struct GNUNET_PQ_ResultSpec
TALER_PQ_result_spec_json (const char *name,
json_t **jp)
{
struct GNUNET_PQ_ResultSpec res =
{ &extract_json, &clean_json, NULL,
(void *) jp, 0,
name, NULL };
return res;
}
/* end of pq_result_helper.c */

141
src/pq/test_pq.c
View File

@ -1,6 +1,6 @@
/*
This file is part of TALER
(C) 2015 GNUnet e.V.
(C) 2015, 2016 GNUnet e.V.
TALER 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
@ -48,47 +48,27 @@ postgres_prepare (PGconn *db_conn)
PREPARE ("test_insert",
"INSERT INTO test_pq ("
" pub"
",sig"
",abs_time"
",forever"
",hash"
",hamount_val"
" hamount_val"
",hamount_frac"
",hamount_curr"
",namount_val"
",namount_frac"
",namount_curr"
",vsize"
",u16"
",u32"
",u64"
",json"
") VALUES "
"($1, $2, $3, $4, $5, $6,"
"$7, $8, $9, $10, $11, $12, $13, $14, $15, $16);",
16, NULL);
"$7);",
7, NULL);
PREPARE ("test_select",
"SELECT"
" pub"
",sig"
",abs_time"
",forever"
",hash"
",hamount_val"
" hamount_val"
",hamount_frac"
",hamount_curr"
",namount_val"
",namount_frac"
",namount_curr"
",vsize"
",u16"
",u32"
",u64"
",json"
" FROM test_pq"
" ORDER BY abs_time DESC "
" LIMIT 1;",
" FROM test_pq;",
0, NULL);
return GNUNET_OK;
#undef PREPARE
@ -103,40 +83,15 @@ postgres_prepare (PGconn *db_conn)
static int
run_queries (PGconn *conn)
{
struct GNUNET_CRYPTO_rsa_PublicKey *pub;
struct GNUNET_CRYPTO_rsa_PublicKey *pub2 = NULL;
struct GNUNET_CRYPTO_rsa_Signature *sig;
struct GNUNET_CRYPTO_rsa_Signature *sig2 = NULL;
struct GNUNET_TIME_Absolute abs_time = GNUNET_TIME_absolute_get ();
struct GNUNET_TIME_Absolute abs_time2;
struct GNUNET_TIME_Absolute forever = GNUNET_TIME_UNIT_FOREVER_ABS;
struct GNUNET_TIME_Absolute forever2;
struct GNUNET_HashCode hc;
struct GNUNET_HashCode hc2;
struct TALER_Amount hamount;
struct TALER_Amount hamount2;
struct TALER_AmountNBO namount;
struct TALER_AmountNBO namount2;
PGresult *result;
int ret;
struct GNUNET_CRYPTO_rsa_PrivateKey *priv;
char msg[] = "Hello";
void *msg2;
size_t msg2_len;
uint16_t u16;
uint16_t u162;
uint32_t u32;
uint32_t u322;
uint64_t u64;
uint64_t u642;
json_t *json;
json_t *json2;
priv = GNUNET_CRYPTO_rsa_private_key_create (1024);
pub = GNUNET_CRYPTO_rsa_private_key_get_public (priv);
sig = GNUNET_CRYPTO_rsa_sign (priv,
msg,
sizeof (msg));
GNUNET_assert (GNUNET_OK ==
TALER_string_to_amount ("EUR:5.5",
&hamount));
@ -145,49 +100,28 @@ run_queries (PGconn *conn)
GNUNET_assert (GNUNET_OK ==
TALER_string_to_amount ("EUR:4.4",
&hamount));
u16 = 16;
u32 = 32;
u64 = 64;
json = json_object ();
json_object_set (json, "foo", json_integer (42));
GNUNET_assert (NULL != json);
/* FIXME: test TALER_PQ_result_spec_variable_size */
/* FIXME: test GNUNET_PQ_result_spec_variable_size */
{
struct TALER_PQ_QueryParam params_insert[] = {
TALER_PQ_query_param_rsa_public_key (pub),
TALER_PQ_query_param_rsa_signature (sig),
TALER_PQ_query_param_absolute_time (&abs_time),
TALER_PQ_query_param_absolute_time (&forever),
TALER_PQ_query_param_auto_from_type (&hc),
struct GNUNET_PQ_QueryParam params_insert[] = {
TALER_PQ_query_param_amount (&hamount),
TALER_PQ_query_param_amount_nbo (&namount),
TALER_PQ_query_param_fixed_size (msg, strlen (msg)),
TALER_PQ_query_param_uint16 (&u16),
TALER_PQ_query_param_uint32 (&u32),
TALER_PQ_query_param_uint64 (&u64),
TALER_PQ_query_param_json (json),
TALER_PQ_query_param_end
GNUNET_PQ_query_param_end
};
struct TALER_PQ_QueryParam params_select[] = {
TALER_PQ_query_param_end
struct GNUNET_PQ_QueryParam params_select[] = {
GNUNET_PQ_query_param_end
};
struct TALER_PQ_ResultSpec results_select[] = {
TALER_PQ_result_spec_rsa_public_key ("pub", &pub2),
TALER_PQ_result_spec_rsa_signature ("sig", &sig2),
TALER_PQ_result_spec_absolute_time ("abs_time", &abs_time2),
TALER_PQ_result_spec_absolute_time ("forever", &forever2),
TALER_PQ_result_spec_auto_from_type ("hash", &hc2),
struct GNUNET_PQ_ResultSpec results_select[] = {
TALER_PQ_result_spec_amount ("hamount", &hamount2),
TALER_PQ_result_spec_amount_nbo ("namount", &namount2),
TALER_PQ_result_spec_variable_size ("vsize", &msg2, &msg2_len),
TALER_PQ_result_spec_uint16 ("u16", &u162),
TALER_PQ_result_spec_uint32 ("u32", &u322),
TALER_PQ_result_spec_uint64 ("u64", &u642),
TALER_PQ_result_spec_json ("json", &json2),
TALER_PQ_result_spec_end
GNUNET_PQ_result_spec_end
};
result = TALER_PQ_exec_prepared (conn,
result = GNUNET_PQ_exec_prepared (conn,
"test_insert",
params_insert);
if (PGRES_COMMAND_OK != PQresultStatus (result))
@ -196,14 +130,11 @@ run_queries (PGconn *conn)
"Database failure: %s\n",
PQresultErrorMessage (result));
PQclear (result);
GNUNET_CRYPTO_rsa_signature_free (sig);
GNUNET_CRYPTO_rsa_private_key_free (priv);
GNUNET_CRYPTO_rsa_public_key_free (pub);
return 1;
}
PQclear (result);
result = TALER_PQ_exec_prepared (conn,
result = GNUNET_PQ_exec_prepared (conn,
"test_select",
params_select);
if (1 !=
@ -211,21 +142,11 @@ run_queries (PGconn *conn)
{
GNUNET_break (0);
PQclear (result);
GNUNET_CRYPTO_rsa_signature_free (sig);
GNUNET_CRYPTO_rsa_private_key_free (priv);
GNUNET_CRYPTO_rsa_public_key_free (pub);
return 1;
}
ret = TALER_PQ_extract_result (result,
ret = GNUNET_PQ_extract_result (result,
results_select,
0);
GNUNET_break (GNUNET_YES == ret);
GNUNET_break (abs_time.abs_value_us == abs_time2.abs_value_us);
GNUNET_break (forever.abs_value_us == forever2.abs_value_us);
GNUNET_break (0 ==
memcmp (&hc,
&hc2,
sizeof (struct GNUNET_HashCode)));
GNUNET_break (0 ==
TALER_amount_cmp (&hamount,
&hamount2));
@ -237,28 +158,11 @@ run_queries (PGconn *conn)
GNUNET_break (0 ==
TALER_amount_cmp (&hamount,
&hamount2));
GNUNET_break (0 ==
GNUNET_CRYPTO_rsa_signature_cmp (sig,
sig2));
GNUNET_break (0 ==
GNUNET_CRYPTO_rsa_public_key_cmp (pub,
pub2));
GNUNET_break (strlen (msg) == msg2_len);
GNUNET_break (0 ==
strncmp (msg,
msg2,
msg2_len));
GNUNET_break (16 == u162);
GNUNET_break (32 == u322);
GNUNET_break (64 == u642);
GNUNET_break (42 == json_integer_value (json_object_get (json2, "foo")));
json_decref (json2);
TALER_PQ_cleanup_result (results_select);
GNUNET_PQ_cleanup_result (results_select);
PQclear (result);
}
GNUNET_CRYPTO_rsa_signature_free (sig);
GNUNET_CRYPTO_rsa_private_key_free (priv);
GNUNET_CRYPTO_rsa_public_key_free (pub);
if (GNUNET_OK != ret)
return 1;
@ -290,21 +194,12 @@ main(int argc,
result = PQexec (conn,
"CREATE TEMPORARY TABLE IF NOT EXISTS test_pq ("
" pub BYTEA NOT NULL"
",sig BYTEA NOT NULL"
",abs_time INT8 NOT NULL"
",forever INT8 NOT NULL"
",hash BYTEA NOT NULL CHECK(LENGTH(hash)=64)"
",hamount_val INT8 NOT NULL"
" hamount_val INT8 NOT NULL"
",hamount_frac INT4 NOT NULL"
",hamount_curr VARCHAR("TALER_CURRENCY_LEN_STR") NOT NULL"
",namount_val INT8 NOT NULL"
",namount_frac INT4 NOT NULL"
",namount_curr VARCHAR("TALER_CURRENCY_LEN_STR") NOT NULL"
",vsize VARCHAR NOT NULL"
",u16 INT2 NOT NULL"
",u32 INT4 NOT NULL"
",u64 INT8 NOT NULL"
",json VARCHAR NOT NULL"
")");
if (PGRES_COMMAND_OK != PQresultStatus (result))