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author | Christian Grothoff <christian@grothoff.org> | 2017-11-30 17:17:37 +0100 |
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committer | Christian Grothoff <christian@grothoff.org> | 2017-11-30 17:17:37 +0100 |
commit | 5540747ca2e5f37f2df504d689b850d1078fcdc5 (patch) | |
tree | 0e8be904bdedfe74a7cf78e1c27f7edc614c6301 /src/pq/pq_query_helper.c | |
parent | 78b77ee8d515c80ac85ca7af59e3e82c2baaeb68 (diff) | |
download | exchange-5540747ca2e5f37f2df504d689b850d1078fcdc5.tar.xz |
patch to address #5183: always round time before giving it to DB, tolerate DB answering without rounded time
Diffstat (limited to 'src/pq/pq_query_helper.c')
-rw-r--r-- | src/pq/pq_query_helper.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/pq/pq_query_helper.c b/src/pq/pq_query_helper.c index d6418a18b..6386749c9 100644 --- a/src/pq/pq_query_helper.c +++ b/src/pq/pq_query_helper.c @@ -205,4 +205,127 @@ TALER_PQ_query_param_json (const json_t *x) } +/** + * 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_round_time (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_TIME_Absolute *at = data; + struct GNUNET_TIME_Absolute tmp; + struct GNUNET_TIME_AbsoluteNBO *buf; + + GNUNET_break (NULL == cls); + if (1 != param_length) + return -1; + tmp = *at; + GNUNET_assert (GNUNET_OK == + GNUNET_TIME_round_abs (&tmp)); + buf = GNUNET_new (struct GNUNET_TIME_AbsoluteNBO); + *buf = GNUNET_TIME_absolute_hton (tmp); + scratch[0] = buf; + param_values[0] = (void *) buf; + param_lengths[0] = sizeof (struct GNUNET_TIME_AbsoluteNBO); + param_formats[0] = 1; + return 1; +} + + +/** + * Generate query parameter for an absolute time value. + * In contrast to + * #GNUNET_PQ_query_param_absolute_time(), this function + * will abort (!) if the time given is not rounded! + * 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 +TALER_PQ_query_param_absolute_time (const struct GNUNET_TIME_Absolute *x) +{ + struct GNUNET_PQ_QueryParam res = + { &qconv_round_time, 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_round_time_abs (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_TIME_AbsoluteNBO *at = data; + struct GNUNET_TIME_Absolute tmp; + + GNUNET_break (NULL == cls); + if (1 != param_length) + return -1; + tmp = GNUNET_TIME_absolute_ntoh (*at); + GNUNET_assert (GNUNET_OK == + GNUNET_TIME_round_abs (&tmp)); + param_values[0] = (void *) at; + param_lengths[0] = sizeof (struct GNUNET_TIME_AbsoluteNBO); + param_formats[0] = 1; + return 0; +} + + +/** + * Generate query parameter for an absolute time value. + * In contrast to + * #GNUNET_PQ_query_param_absolute_time(), this function + * will abort (!) if the time given is not rounded! + * The database must store a 64-bit integer. + * + * @param x pointer to the query parameter to pass + */ +struct GNUNET_PQ_QueryParam +TALER_PQ_query_param_absolute_time_nbo(const struct GNUNET_TIME_AbsoluteNBO *x) +{ + struct GNUNET_PQ_QueryParam res = + { &qconv_round_time_abs, NULL, x, sizeof (*x), 1 }; + return res; +} + + /* end of pq/pq_query_helper.c */ |