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-rw-r--r--src/pq/pq.c182
1 files changed, 0 insertions, 182 deletions
diff --git a/src/pq/pq.c b/src/pq/pq.c
deleted file mode 100644
index b260aa1db..000000000
--- a/src/pq/pq.c
+++ /dev/null
@@ -1,182 +0,0 @@
1/*
2 This file is part of GNUnet
3 Copyright (C) 2014, 2015, 2016, 2017, 2019, 2020 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 pq/pq.c
22 * @brief helper functions for libpq (PostGres) interactions
23 * @author Sree Harsha Totakura <sreeharsha@totakura.in>
24 * @author Florian Dold
25 * @author Christian Grothoff
26 */
27#include "platform.h"
28#include "pq.h"
29
30
31PGresult *
32GNUNET_PQ_exec_prepared (struct GNUNET_PQ_Context *db,
33 const char *name,
34 const struct GNUNET_PQ_QueryParam *params)
35{
36 unsigned int len;
37
38 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
39 "Running prepared statement `%s' on %p\n",
40 name,
41 db);
42 /* count the number of parameters */
43 len = 0;
44 for (unsigned int i = 0; 0 != params[i].num_params; i++)
45 len += params[i].num_params;
46
47 /* new scope to allow stack allocation without alloca */
48 {
49 /* Scratch buffer for temporary storage */
50 void *scratch[len];
51 /* Parameter array we are building for the query */
52 void *param_values[len];
53 int param_lengths[len];
54 int param_formats[len];
55 unsigned int off;
56 /* How many entries in the scratch buffer are in use? */
57 unsigned int soff;
58 PGresult *res;
59 int ret;
60 ConnStatusType status;
61
62 off = 0;
63 soff = 0;
64 for (unsigned int i = 0; 0 != params[i].num_params; i++)
65 {
66 const struct GNUNET_PQ_QueryParam *x = &params[i];
67
68 ret = x->conv (x->conv_cls,
69 x->data,
70 x->size,
71 &param_values[off],
72 &param_lengths[off],
73 &param_formats[off],
74 x->num_params,
75 &scratch[soff],
76 len - soff);
77 if (ret < 0)
78 {
79 for (off = 0; off < soff; off++)
80 GNUNET_free (scratch[off]);
81 return NULL;
82 }
83 soff += ret;
84 off += x->num_params;
85 }
86 GNUNET_assert (off == len);
87 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
88 "pq",
89 "Executing prepared SQL statement `%s'\n",
90 name);
91 res = PQexecPrepared (db->conn,
92 name,
93 len,
94 (const char **) param_values,
95 param_lengths,
96 param_formats,
97 1);
98 if ( (PGRES_COMMAND_OK != PQresultStatus (res)) &&
99 (CONNECTION_OK != (status = PQstatus (db->conn))) )
100 {
101 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
102 "pq",
103 "Database disconnected on SQL statement `%s' (reconnecting)\n",
104 name);
105 GNUNET_PQ_reconnect (db);
106 res = NULL;
107 }
108
109 for (off = 0; off < soff; off++)
110 GNUNET_free (scratch[off]);
111 return res;
112 }
113}
114
115
116void
117GNUNET_PQ_cleanup_result (struct GNUNET_PQ_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 rs[i].dst);
123}
124
125
126enum GNUNET_GenericReturnValue
127GNUNET_PQ_extract_result (PGresult *result,
128 struct GNUNET_PQ_ResultSpec *rs,
129 int row)
130{
131 unsigned int i;
132
133 if (NULL == result)
134 return GNUNET_SYSERR;
135 for (i = 0; NULL != rs[i].conv; i++)
136 {
137 struct GNUNET_PQ_ResultSpec *spec;
138 enum GNUNET_GenericReturnValue ret;
139
140 spec = &rs[i];
141 ret = spec->conv (spec->cls,
142 result,
143 row,
144 spec->fname,
145 &spec->dst_size,
146 spec->dst);
147 switch (ret)
148 {
149 case GNUNET_OK:
150 /* canonical case, continue below */
151 if (NULL != spec->is_null)
152 *spec->is_null = false;
153 break;
154 case GNUNET_NO:
155 if (spec->is_nullable)
156 {
157 if (NULL != spec->is_null)
158 *spec->is_null = true;
159 continue;
160 }
161 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
162 "NULL field encountered for `%s' where non-NULL was required\n",
163 spec->fname);
164 goto cleanup;
165 case GNUNET_SYSERR:
166 GNUNET_break (0);
167 goto cleanup;
168 }
169 if (NULL != spec->result_size)
170 *spec->result_size = spec->dst_size;
171 }
172 return GNUNET_OK;
173cleanup:
174 for (unsigned int j = 0; j < i; j++)
175 if (NULL != rs[j].cleaner)
176 rs[j].cleaner (rs[j].cls,
177 rs[j].dst);
178 return GNUNET_SYSERR;
179}
180
181
182/* end of pq/pq.c */