[7d74d42] | 1 | /* |
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[a7cce8d] | 2 | * Copyright (C) 2020-2021 Soleta Networks <info@soleta.eu> |
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[7d74d42] | 3 | * |
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| 4 | * This program is free software: you can redistribute it and/or modify it under |
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| 5 | * the terms of the GNU Affero General Public License as published by the |
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[a7cce8d] | 6 | * Free Software Foundation; either version 3 of the License, or |
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| 7 | * (at your option) any later version. |
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[7d74d42] | 8 | */ |
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| 9 | |
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| 10 | #include <syslog.h> |
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| 11 | #include <netinet/in.h> |
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| 12 | #include <arpa/inet.h> |
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| 13 | #include <string.h> |
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| 14 | #include "dbi.h" |
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| 15 | #include "cfg.h" |
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| 16 | #include <syslog.h> |
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| 17 | #include <string.h> |
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| 18 | #include <stdio.h> |
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| 19 | |
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[8775c06] | 20 | #define OG_SCHEMA_STMTS_V2 7 |
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| 21 | |
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| 22 | static const char *stmts_v2[OG_SCHEMA_STMTS_V2] = { |
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| 23 | [0] = "ALTER TABLE `aulas` " |
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| 24 | "ADD CONSTRAINT FK_centros " |
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| 25 | "FOREIGN KEY (`idcentro`) " |
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| 26 | "REFERENCES `centros` (`idcentro`) ON DELETE CASCADE", |
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| 27 | [1] = "ALTER TABLE `ordenadores` " |
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| 28 | "ADD CONSTRAINT FK_aulas " |
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| 29 | "FOREIGN KEY (`idaula`) " |
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| 30 | "REFERENCES `aulas` (`idaula`) ON DELETE CASCADE", |
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| 31 | [2] = "ALTER TABLE `ordenadores_particiones` " |
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| 32 | "ADD CONSTRAINT FK_ordenadores " |
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| 33 | "FOREIGN KEY (`idordenador`) " |
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| 34 | "REFERENCES `ordenadores` (`idordenador`) ON DELETE CASCADE", |
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| 35 | [3] = "DELETE PS FROM perfilessoft_softwares AS PS " |
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| 36 | "WHERE NOT EXISTS (" |
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| 37 | "SELECT null FROM softwares AS S " |
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| 38 | "WHERE S.idsoftware = PS.idsoftware)", |
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| 39 | [4] = "ALTER TABLE `perfilessoft_softwares` " |
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| 40 | "ADD CONSTRAINT FK_softwares " |
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| 41 | "FOREIGN KEY (`idsoftware`) " |
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| 42 | "REFERENCES `softwares` (`idsoftware`) ON DELETE CASCADE", |
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| 43 | [5] = "ALTER TABLE `perfilessoft_softwares` " |
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| 44 | "ADD CONSTRAINT FK_perfilessoft " |
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| 45 | "FOREIGN KEY (`idperfilsoft`) " |
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| 46 | "REFERENCES `perfilessoft` (`idperfilsoft`) ON DELETE CASCADE", |
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| 47 | [6] = "UPDATE version SET version = 2", |
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| 48 | }; |
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| 49 | |
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[7d74d42] | 50 | struct og_server_cfg ogconfig; |
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| 51 | |
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| 52 | static int og_dbi_create_version(struct og_dbi *dbi) |
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| 53 | { |
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| 54 | const char *msglog; |
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| 55 | dbi_result result; |
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| 56 | |
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| 57 | result = dbi_conn_queryf(dbi->conn, "CREATE TABLE `version` " |
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| 58 | "(`version` smallint unsigned NOT NULL) " |
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| 59 | "ENGINE='MyISAM' COLLATE 'utf8_general_ci'"); |
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| 60 | if (!result) { |
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| 61 | dbi_conn_error(dbi->conn, &msglog); |
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| 62 | syslog(LOG_INFO, "Could not create schema version table (%s:%d) %s\n", |
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| 63 | __func__, __LINE__, msglog); |
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| 64 | return -1; |
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| 65 | } |
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| 66 | dbi_result_free(result); |
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| 67 | |
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| 68 | result = dbi_conn_queryf(dbi->conn, "INSERT INTO `version` (`version`) VALUES ('0')"); |
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| 69 | if (!result) { |
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| 70 | dbi_conn_error(dbi->conn, &msglog); |
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| 71 | syslog(LOG_INFO, "Could not insert into schema version table (%s:%d) %s\n", |
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| 72 | __func__, __LINE__, msglog); |
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| 73 | return -1; |
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| 74 | } |
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| 75 | dbi_result_free(result); |
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| 76 | |
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| 77 | return 0; |
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| 78 | } |
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| 79 | static int og_dbi_schema_version(struct og_dbi *dbi) |
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| 80 | { |
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| 81 | const char *msglog; |
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| 82 | dbi_result result; |
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| 83 | uint32_t version; |
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| 84 | |
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| 85 | result = dbi_conn_queryf(dbi->conn, "SELECT * from version"); |
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| 86 | if (!result) { |
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| 87 | dbi_conn_error(dbi->conn, &msglog); |
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| 88 | syslog(LOG_INFO, "no version table found (%s:%d) %s\n", |
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| 89 | __func__, __LINE__, msglog); |
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| 90 | return -1; |
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| 91 | } |
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| 92 | |
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| 93 | if (!dbi_result_last_row(result)) { |
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| 94 | dbi_conn_error(dbi->conn, &msglog); |
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| 95 | syslog(LOG_ERR, "cannot get last row from version table (%s:%d) %s\n", |
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| 96 | __func__, __LINE__, msglog); |
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| 97 | return -1; |
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| 98 | } |
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| 99 | |
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| 100 | version = dbi_result_get_uint(result, "version"); |
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| 101 | |
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| 102 | dbi_result_free(result); |
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| 103 | |
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| 104 | return version; |
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| 105 | } |
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[8775c06] | 106 | |
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[7d74d42] | 107 | static int og_dbi_schema_v1(struct og_dbi *dbi) |
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| 108 | { |
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| 109 | const char *msglog, *command; |
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| 110 | dbi_result result, result_alter; |
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| 111 | |
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| 112 | result = dbi_conn_queryf(dbi->conn, "SELECT concat('alter table `',TABLE_SCHEMA,'`.`',TABLE_NAME,'` engine=innodb;')" |
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| 113 | "AS cmd FROM information_schema.TABLES WHERE TABLE_SCHEMA='%s'", |
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| 114 | ogconfig.db.name); |
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| 115 | |
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| 116 | while (dbi_result_next_row(result)) { |
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| 117 | command = dbi_result_get_string(result, "cmd"); |
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| 118 | |
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| 119 | syslog(LOG_DEBUG, "Upgrading to innoDB: %s\n", command); |
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| 120 | result_alter = dbi_conn_query(dbi->conn, command); |
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| 121 | if (!result_alter) { |
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| 122 | dbi_conn_error(dbi->conn, &msglog); |
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| 123 | syslog(LOG_INFO, "Error when upgrading engine to innoDB (%s:%d) %s\n", |
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| 124 | __func__, __LINE__, msglog); |
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| 125 | return -1; |
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| 126 | } |
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| 127 | dbi_result_free(result_alter); |
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| 128 | } |
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| 129 | dbi_result_free(result); |
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| 130 | |
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| 131 | result = dbi_conn_query(dbi->conn, "UPDATE version SET version = 1"); |
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| 132 | if (!result) { |
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| 133 | dbi_conn_error(dbi->conn, &msglog); |
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| 134 | syslog(LOG_INFO, "Could not update version row (%s:%d) %s\n", |
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| 135 | __func__, __LINE__, msglog); |
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| 136 | return -1; |
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| 137 | } |
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| 138 | dbi_result_free(result); |
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| 139 | |
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| 140 | return 0; |
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| 141 | } |
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| 142 | |
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[8775c06] | 143 | static int og_dbi_schema_v2(struct og_dbi *dbi) |
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| 144 | { |
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| 145 | const char *msglog; |
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| 146 | dbi_result result; |
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| 147 | int ret, i; |
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| 148 | |
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| 149 | ret = dbi_conn_transaction_begin(dbi->conn); |
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| 150 | if (ret) { |
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| 151 | syslog(LOG_DEBUG, "could not begin a transaction (%s:%d)\n", |
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| 152 | __func__, __LINE__); |
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| 153 | goto err_no_trans; |
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| 154 | } |
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| 155 | |
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| 156 | for (i = 0; i < OG_SCHEMA_STMTS_V2; i++) { |
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| 157 | result = dbi_conn_query(dbi->conn, stmts_v2[i]); |
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| 158 | if (!result) { |
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| 159 | dbi_conn_error(dbi->conn, &msglog); |
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| 160 | syslog(LOG_ERR, "Statement number %d failed (%s:%d): %s\n", |
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| 161 | i, __func__, __LINE__, msglog); |
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| 162 | goto err_trans; |
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| 163 | } |
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| 164 | dbi_result_free(result); |
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| 165 | } |
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| 166 | |
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| 167 | ret = dbi_conn_transaction_commit(dbi->conn); |
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| 168 | if (ret) { |
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| 169 | syslog(LOG_DEBUG, "could not commit a transaction (%s:%d)\n", |
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| 170 | __func__, __LINE__); |
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| 171 | goto err_trans; |
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| 172 | } |
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| 173 | return 0; |
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| 174 | |
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| 175 | err_trans: |
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| 176 | dbi_conn_transaction_rollback(dbi->conn); |
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| 177 | err_no_trans: |
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| 178 | return -1; |
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| 179 | } |
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| 180 | |
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[7d74d42] | 181 | static struct og_schema_version { |
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| 182 | int version; |
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| 183 | int (*update)(struct og_dbi *dbi); |
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| 184 | } schema_version[] = { |
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| 185 | { .version = 1, .update = og_dbi_schema_v1 }, |
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[8775c06] | 186 | { .version = 2, .update = og_dbi_schema_v2 }, |
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[7d74d42] | 187 | { 0, NULL }, |
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| 188 | }; |
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| 189 | |
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| 190 | int og_dbi_schema_update(void) |
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| 191 | { |
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| 192 | int version, i, err; |
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| 193 | struct og_dbi *dbi; |
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| 194 | const char *msglog; |
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| 195 | |
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| 196 | dbi = og_dbi_open(&ogconfig.db); |
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| 197 | if (!dbi) { |
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| 198 | dbi_conn_error(dbi->conn, &msglog); |
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| 199 | syslog(LOG_ERR, "failed to query database (%s:%d) %s\n", |
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| 200 | __func__, __LINE__, msglog); |
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| 201 | return -1; |
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| 202 | } |
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| 203 | |
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| 204 | version = og_dbi_schema_version(dbi); |
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| 205 | |
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| 206 | if (version < 0) { |
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| 207 | syslog(LOG_INFO, "creating table version in schema\n"); |
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| 208 | og_dbi_create_version(dbi); |
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| 209 | } else { |
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| 210 | syslog(LOG_INFO, "database schema version %d\n", version); |
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| 211 | } |
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| 212 | |
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| 213 | for (i = 0; schema_version[i].version; i++) { |
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| 214 | if (version >= schema_version[i].version) |
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| 215 | continue; |
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| 216 | |
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| 217 | syslog(LOG_INFO, "upgrading to schema version %d\n", schema_version[i].version); |
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| 218 | |
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| 219 | err = schema_version[i].update(dbi); |
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| 220 | if (err < 0) { |
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| 221 | syslog(LOG_ERR, "failed to update schema!\n"); |
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| 222 | og_dbi_close(dbi); |
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| 223 | return -1; |
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| 224 | } |
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| 225 | } |
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| 226 | |
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| 227 | og_dbi_close(dbi); |
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| 228 | |
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| 229 | return 0; |
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| 230 | } |
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