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-rw-r--r--src/sq/sq.c144
1 files changed, 0 insertions, 144 deletions
diff --git a/src/sq/sq.c b/src/sq/sq.c
deleted file mode 100644
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--- a/src/sq/sq.c
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@@ -1,144 +0,0 @@
1/*
2 This file is part of GNUnet
3 Copyright (C) 2017 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20/**
21 * @file sq/sq.c
22 * @brief helper functions for Sqlite3 DB interactions
23 * @author Christian Grothoff
24 */
25#include "platform.h"
26#include "gnunet_sq_lib.h"
27
28
29/**
30 * Execute a prepared statement.
31 *
32 * @param db_conn database connection
33 * @param params parameters to the statement
34 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
35 */
36int
37GNUNET_SQ_bind (sqlite3_stmt *stmt,
38 const struct GNUNET_SQ_QueryParam *params)
39{
40 unsigned int j;
41
42 j = 1;
43 for (unsigned int i = 0; NULL != params[i].conv; i++)
44 {
45 if (GNUNET_OK !=
46 params[i].conv (params[i].conv_cls,
47 params[i].data,
48 params[i].size,
49 stmt,
50 j))
51 {
52 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING,
53 "sq",
54 _ ("Failure to bind %u-th SQL parameter\n"),
55 i);
56 if (SQLITE_OK !=
57 sqlite3_reset (stmt))
58 {
59 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING,
60 "sq",
61 _ ("Failure in sqlite3_reset (!)\n"));
62 return GNUNET_SYSERR;
63 }
64 }
65 GNUNET_assert (0 != params[i].num_params);
66 j += params[i].num_params;
67 }
68 return GNUNET_OK;
69}
70
71
72/**
73 * Extract results from a query result according to the given specification.
74 *
75 * @param result result to process
76 * @param[in,out] rs result specification to extract for
77 * @return
78 * #GNUNET_OK if all results could be extracted
79 * #GNUNET_SYSERR if a result was invalid (non-existing field)
80 */
81int
82GNUNET_SQ_extract_result (sqlite3_stmt *result,
83 struct GNUNET_SQ_ResultSpec *rs)
84{
85 unsigned int j = 0;
86
87 for (unsigned int i = 0; NULL != rs[i].conv; i++)
88 {
89 if (NULL == rs[i].result_size)
90 rs[i].result_size = &rs[i].dst_size;
91 if (GNUNET_OK !=
92 rs[i].conv (rs[i].cls,
93 result,
94 j,
95 rs[i].result_size,
96 rs[i].dst))
97 {
98 for (unsigned int k = 0; k < i; k++)
99 if (NULL != rs[k].cleaner)
100 rs[k].cleaner (rs[k].cls);
101 return GNUNET_SYSERR;
102 }
103 GNUNET_assert (0 != rs[i].num_params);
104 j += rs[i].num_params;
105 }
106 return GNUNET_OK;
107}
108
109
110/**
111 * Free all memory that was allocated in @a rs during
112 * #GNUNET_SQ_extract_result().
113 *
114 * @param rs reult specification to clean up
115 */
116void
117GNUNET_SQ_cleanup_result (struct GNUNET_SQ_ResultSpec *rs)
118{
119 for (unsigned int i = 0; NULL != rs[i].conv; i++)
120 if (NULL != rs[i].cleaner)
121 rs[i].cleaner (rs[i].cls);
122}
123
124
125/**
126 * Reset @a stmt and log error.
127 *
128 * @param dbh database handle
129 * @param stmt statement to reset
130 */
131void
132GNUNET_SQ_reset (sqlite3 *dbh,
133 sqlite3_stmt *stmt)
134{
135 if (SQLITE_OK !=
136 sqlite3_reset (stmt))
137 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
138 "sqlite",
139 _ ("Failed to reset sqlite statement with error: %s\n"),
140 sqlite3_errmsg (dbh));
141}
142
143
144/* end of sq.c */