cdr/cdr_adaptive_odbc.c

   1 /*
   2  * Asterisk -- An open source telephony toolkit.
   3  *
   4  * Copyright (C) 2007, Tilghman Lesher
   5  *
   6  * Tilghman Lesher <cdr_adaptive_odbc__v1@the-tilghman.com>
   7  *
   8  * See http://www.asterisk.org for more information about
   9  * the Asterisk project. Please do not directly contact
  10  * any of the maintainers of this project for assistance;
  11  * the project provides a web site, mailing lists and IRC
  12  * channels for your use.
  13  *
  14  * This program is free software, distributed under the terms of
  15  * the GNU General Public License Version 2. See the LICENSE file
  16  * at the top of the source tree.
  17  */
  18
  19 /*! \file
  20  *
  21  * \brief Adaptive ODBC CDR backend
  22  *
  23  * \author Tilghman Lesher <cdr_adaptive_odbc__v1@the-tilghman.com>
  24  * \ingroup cdr_drivers
  25  */
  26
  27 /*** MODULEINFO
  28         <depend>unixodbc</depend>
  29  ***/
  30
  31 #include "asterisk.h"
  32
  33 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
  34
  35 #include <sys/types.h>
  36 #include <time.h>
  37
  38 #include <sql.h>
  39 #include <sqlext.h>
  40 #include <sqltypes.h>
  41
  42 #include "asterisk/config.h"
  43 #include "asterisk/options.h"
  44 #include "asterisk/channel.h"
  45 #include "asterisk/lock.h"
  46 #include "asterisk/linkedlists.h"
  47 #include "asterisk/res_odbc.h"
  48 #include "asterisk/cdr.h"
  49 #include "asterisk/module.h"
  50 #include "asterisk/logger.h"
  51
  52 #define CONFIG  "cdr_adaptive_odbc.conf"
  53
  54 static char *name = "Adaptive ODBC";
  55 /* Optimization to reduce number of memory allocations */
  56 static int maxsize = 512, maxsize2 = 512;
  57
  58 struct columns {
  59         char *name;
  60         char *cdrname;
  61         SQLSMALLINT type;
  62         SQLINTEGER size;
  63         SQLSMALLINT decimals;
  64         SQLSMALLINT radix;
  65         SQLSMALLINT nullable;
  66         SQLINTEGER octetlen;
  67         AST_LIST_ENTRY(columns) list;
  68 };
  69
  70 struct tables {
  71         char *connection;
  72         char *table;
  73         AST_LIST_HEAD_NOLOCK(odbc_columns, columns) columns;
  74         AST_RWLIST_ENTRY(tables) list;
  75 };
  76
  77 static AST_RWLIST_HEAD_STATIC(odbc_tables, tables);
  78
  79 static int load_config(void)
  80 {
  81         struct ast_config *cfg;
  82         struct ast_variable *var;
  83         const char *tmp, *catg;
  84         struct tables *tableptr;
  85         struct columns *entry;
  86         struct odbc_obj *obj;
  87         char columnname[80];
  88         char connection[40];
  89         char table[40];
  90         int lenconnection, lentable;
  91         SQLLEN sqlptr;
  92         int res = 0;
  93         SQLHSTMT stmt = NULL;
  94         struct ast_flags config_flags = { 0 }; /* Part of our config comes from the database */
  95
  96         cfg = ast_config_load(CONFIG, config_flags);
  97         if (!cfg) {
  98                 ast_log(LOG_WARNING, "Unable to load " CONFIG ".  No adaptive ODBC CDRs.\n");
  99                 return -1;
 100         }
 101
 102         for (catg = ast_category_browse(cfg, NULL); catg; catg = ast_category_browse(cfg, catg)) {
 103                 var = ast_variable_browse(cfg, catg);
 104                 if (!var)
 105                         continue;
 106
 107                 if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "connection"))) {
 108                         ast_log(LOG_WARNING, "No connection parameter found in '%s'.  Skipping.\n", catg);
 109                         continue;
 110                 }
 111                 ast_copy_string(connection, tmp, sizeof(connection));
 112                 lenconnection = strlen(connection);
 113
 114                 /* When loading, we want to be sure we can connect. */
 115                 obj = ast_odbc_request_obj(connection, 1);
 116                 if (!obj) {
 117                         ast_log(LOG_WARNING, "No such connection '%s' in the '%s' section of " CONFIG ".  Check res_odbc.conf.\n", connection, catg);
 118                         continue;
 119                 }
 120
 121                 if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "table"))) {
 122                         ast_log(LOG_NOTICE, "No table name found.  Assuming 'cdr'.\n");
 123                         tmp = "cdr";
 124                 }
 125                 ast_copy_string(table, tmp, sizeof(table));
 126                 lentable = strlen(table);
 127
 128                 res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
 129                 if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 130                         ast_log(LOG_WARNING, "SQL Alloc Handle failed on connection '%s'!\n", connection);
 131                         ast_odbc_release_obj(obj);
 132                         continue;
 133                 }
 134
 135                 res = SQLColumns(stmt, NULL, 0, NULL, 0, (unsigned char *)table, SQL_NTS, (unsigned char *)"%", SQL_NTS);
 136                 if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 137                         ast_log(LOG_ERROR, "Unable to query database columns on connection '%s'.  Skipping.\n", connection);
 138                         ast_odbc_release_obj(obj);
 139                         continue;
 140                 }
 141
 142                 tableptr = ast_calloc(sizeof(char), sizeof(*tableptr) + lenconnection + 1 + lentable + 1);
 143                 if (!tableptr) {
 144                         ast_log(LOG_ERROR, "Out of memory creating entry for table '%s' on connection '%s'\n", table, connection);
 145                         ast_odbc_release_obj(obj);
 146                         res = -1;
 147                         break;
 148                 }
 149
 150                 tableptr->connection = (char *)tableptr + sizeof(*tableptr);
 151                 tableptr->table = (char *)tableptr + sizeof(*tableptr) + lenconnection + 1;
 152                 ast_copy_string(tableptr->connection, connection, lenconnection + 1);
 153                 ast_copy_string(tableptr->table, table, lentable + 1);
 154
 155                 ast_verb(3, "Found adaptive CDR table %s@%s.\n", tableptr->table, tableptr->connection);
 156
 157                 while ((res = SQLFetch(stmt)) != SQL_NO_DATA && res != SQL_ERROR) {
 158                         char *cdrvar = "";
 159
 160                         SQLGetData(stmt,  4, SQL_C_CHAR, columnname, sizeof(columnname), &sqlptr);
 161
 162                         /* Is there an alias for this column? */
 163
 164                         /* NOTE: This seems like a non-optimal parse method, but I'm going
 165                          * for user configuration readability, rather than fast parsing. We
 166                          * really don't parse this file all that often, anyway.
 167                          */
 168                         for (var = ast_variable_browse(cfg, catg); var; var = var->next) {
 169                                 if (strcasecmp(var->value, columnname) == 0) {
 170                                         char *tmp = ast_strdupa(var->name + 5);
 171                                         cdrvar = ast_strip(tmp);
 172                                         ast_verb(3, "Found alias %s for column %s in %s@%s\n", cdrvar, columnname, tableptr->table, tableptr->connection);
 173                                         break;
 174                                 }
 175                         }
 176                         entry = ast_calloc(sizeof(char), sizeof(*entry) + strlen(columnname) + 1 + strlen(cdrvar) + 1);
 177                         if (!entry) {
 178                                 ast_log(LOG_ERROR, "Out of memory creating entry for column '%s' in table '%s' on connection '%s'\n", columnname, table, connection);
 179                                 res = -1;
 180                                 break;
 181                         }
 182                         entry->name = (char *)entry + sizeof(*entry);
 183                         strcpy(entry->name, columnname);
 184
 185                         if (!ast_strlen_zero(cdrvar)) {
 186                                 entry->cdrname = entry->name + strlen(columnname) + 1;
 187                                 strcpy(entry->cdrname, cdrvar);
 188                         } else /* Point to same place as the column name */
 189                                 entry->cdrname = (char *)entry + sizeof(*entry);
 190
 191                         SQLGetData(stmt,  5, SQL_C_SHORT, &entry->type, sizeof(entry->type), NULL);
 192                         SQLGetData(stmt,  7, SQL_C_LONG, &entry->size, sizeof(entry->size), NULL);
 193                         SQLGetData(stmt,  9, SQL_C_SHORT, &entry->decimals, sizeof(entry->decimals), NULL);
 194                         SQLGetData(stmt, 10, SQL_C_SHORT, &entry->radix, sizeof(entry->radix), NULL);
 195                         SQLGetData(stmt, 11, SQL_C_SHORT, &entry->nullable, sizeof(entry->nullable), NULL);
 196                         SQLGetData(stmt, 16, SQL_C_LONG, &entry->octetlen, sizeof(entry->octetlen), NULL);
 197
 198                         /* Specification states that the octenlen should be the maximum number of bytes
 199                          * returned in a char or binary column, but it seems that some drivers just set
 200                          * it to NULL. (Bad Postgres! No biscuit!) */
 201                         if (entry->octetlen == 0)
 202                                 entry->octetlen = entry->size;
 203
 204                         ast_verb(10, "Found %s column with type %hd with len %ld, octetlen %ld, and numlen (%hd,%hd)\n", entry->name, entry->type, (long) entry->size, (long) entry->octetlen, entry->decimals, entry->radix);
 205                         /* Insert column info into column list */
 206                         AST_LIST_INSERT_TAIL(&(tableptr->columns), entry, list);
 207                         res = 0;
 208                 }
 209
 210                 SQLFreeHandle(SQL_HANDLE_STMT, stmt);
 211                 ast_odbc_release_obj(obj);
 212
 213                 if (AST_LIST_FIRST(&(tableptr->columns)))
 214                         AST_RWLIST_INSERT_TAIL(&odbc_tables, tableptr, list);
 215                 else
 216                         ast_free(tableptr);
 217         }
 218         return res;
 219 }
 220
 221 static int free_config(void)
 222 {
 223         struct tables *table;
 224         struct columns *entry;
 225         while ((table = AST_RWLIST_REMOVE_HEAD(&odbc_tables, list))) {
 226                 while ((entry = AST_LIST_REMOVE_HEAD(&(table->columns), list))) {
 227                         ast_free(entry);
 228                 }
 229                 ast_free(table);
 230         }
 231         return 0;
 232 }
 233
 234 static SQLHSTMT generic_prepare(struct odbc_obj *obj, void *data)
 235 {
 236         int res, i;
 237         char *sql = data;
 238         SQLHSTMT stmt;
 239         SQLINTEGER nativeerror = 0, numfields = 0;
 240         SQLSMALLINT diagbytes = 0;
 241         unsigned char state[10], diagnostic[256];
 242
 243         res = SQLAllocHandle (SQL_HANDLE_STMT, obj->con, &stmt);
 244         if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 245                 ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
 246                 return NULL;
 247         }
 248
 249         res = SQLPrepare(stmt, (unsigned char *)sql, SQL_NTS);
 250         if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 251                 ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", sql);
 252                 SQLGetDiagField(SQL_HANDLE_STMT, stmt, 1, SQL_DIAG_NUMBER, &numfields, SQL_IS_INTEGER, &diagbytes);
 253                 for (i = 0; i < numfields; i++) {
 254                         SQLGetDiagRec(SQL_HANDLE_STMT, stmt, i + 1, state, &nativeerror, diagnostic, sizeof(diagnostic), &diagbytes);
 255                         ast_log(LOG_WARNING, "SQL Execute returned an error %d: %s: %s (%d)\n", res, state, diagnostic, diagbytes);
 256                         if (i > 10) {
 257                                 ast_log(LOG_WARNING, "Oh, that was good.  There are really %d diagnostics?\n", (int)numfields);
 258                                 break;
 259                         }
 260                 }
 261                 SQLFreeHandle (SQL_HANDLE_STMT, stmt);
 262                 return NULL;
 263         }
 264
 265         return stmt;
 266 }
 267
 268 #define LENGTHEN_BUF1(size)                                                                                                             \
 269                         do {                                                                                                                            \
 270                                 /* Lengthen buffer, if necessary */                                                             \
 271                                 if ((newsize = lensql + (size) + 3) > sizesql) {        \
 272                                         if ((tmp = ast_realloc(sql, (newsize / 512 + 1) * 512))) {      \
 273                                                 sql = tmp;                                                                                              \
 274                                                 sizesql = (newsize / 512 + 1) * 512;                                    \
 275                                         } else {                                                                                                        \
 276                                                 ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CDR '%s:%s' failed.\n", tableptr->connection, tableptr->table); \
 277                                                 ast_free(sql);                                                                                  \
 278                                                 ast_free(sql2);                                                                                 \
 279                                                 AST_RWLIST_UNLOCK(&odbc_tables);                                                \
 280                                                 return -1;                                                                                              \
 281                                         }                                                                                                                       \
 282                                 }                                                                                                                               \
 283                         } while (0)
 284
 285 #define LENGTHEN_BUF2(size)                                                                                                             \
 286                         do {                                                                                                                            \
 287                                 if ((newsize = lensql2 + (size) + 3) > sizesql2) {                              \
 288                                         if ((tmp = ast_realloc(sql2, (newsize / 512 + 1) * 512))) {     \
 289                                                 sql2 = tmp;                                                                                             \
 290                                                 sizesql2 = (newsize / 512 + 1) * 512;                                   \
 291                                         } else {                                                                                                        \
 292                                                 ast_log(LOG_ERROR, "Unable to allocate sufficient memory.  Insert CDR '%s:%s' failed.\n", tableptr->connection, tableptr->table);       \
 293                                                 ast_free(sql);                                                                                  \
 294                                                 ast_free(sql2);                                                                                 \
 295                                                 AST_RWLIST_UNLOCK(&odbc_tables);                                                \
 296                                                 return -1;                                                                                              \
 297                                         }                                                                                                                       \
 298                                 }                                                                                                                               \
 299                         } while (0)
 300
 301 static int odbc_log(struct ast_cdr *cdr)
 302 {
 303         struct tables *tableptr;
 304         struct columns *entry;
 305         struct odbc_obj *obj;
 306         int lensql, lensql2, sizesql = maxsize, sizesql2 = maxsize2, newsize;
 307         /* Allocated, so we can realloc() */
 308         char *sql = ast_calloc(sizeof(char), sizesql), *sql2 = ast_calloc(sizeof(char), sizesql2), *tmp;
 309         char colbuf[1024], *colptr;
 310         SQLHSTMT stmt = NULL;
 311         SQLLEN rows = 0;
 312
 313         if (!sql || !sql2) {
 314                 if (sql)
 315                         ast_free(sql);
 316                 if (sql2)
 317                         ast_free(sql2);
 318                 return -1;
 319         }
 320
 321         if (AST_RWLIST_RDLOCK(&odbc_tables)) {
 322                 ast_log(LOG_ERROR, "Unable to lock table list.  Insert CDR(s) failed.\n");
 323                 ast_free(sql);
 324                 ast_free(sql2);
 325                 return -1;
 326         }
 327
 328         AST_LIST_TRAVERSE(&odbc_tables, tableptr, list) {
 329                 lensql = snprintf(sql, sizesql, "INSERT INTO %s (", tableptr->table);
 330                 lensql2 = snprintf(sql2, sizesql2, " VALUES (");
 331
 332                 AST_LIST_TRAVERSE(&(tableptr->columns), entry, list) {
 333                         /* Check if we have a similarly named variable */
 334                         ast_cdr_getvar(cdr, entry->cdrname, &colptr, colbuf, sizeof(colbuf), 0,
 335                                 (strcasecmp(entry->cdrname, "start") == 0 ||
 336                                  strcasecmp(entry->cdrname, "answer") == 0 ||
 337                                  strcasecmp(entry->cdrname, "end") == 0) ? 0 : 1);
 338
 339                         if (colptr) {
 340                                 LENGTHEN_BUF1(strlen(entry->name));
 341
 342                                 switch (entry->type) {
 343                                 case SQL_CHAR:
 344                                 case SQL_VARCHAR:
 345                                 case SQL_LONGVARCHAR:
 346                                 case SQL_BINARY:
 347                                 case SQL_VARBINARY:
 348                                 case SQL_LONGVARBINARY:
 349                                 case SQL_GUID:
 350                                         /* For these two field names, get the rendered form, instead of the raw
 351                                          * form (but only when we're dealing with a character-based field).
 352                                          */
 353                                         if (strcasecmp(entry->name, "disposition") == 0)
 354                                                 ast_cdr_getvar(cdr, entry->name, &colptr, colbuf, sizeof(colbuf), 0, 0);
 355                                         else if (strcasecmp(entry->name, "amaflags") == 0)
 356                                                 ast_cdr_getvar(cdr, entry->name, &colptr, colbuf, sizeof(colbuf), 0, 0);
 357
 358                                         /* Truncate too-long fields */
 359                                         if (entry->type != SQL_GUID) {
 360                                                 if (strlen(colptr) > entry->octetlen)
 361                                                         colptr[entry->octetlen] = '\0';
 362                                         }
 363
 364                                         lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 365                                         LENGTHEN_BUF2(strlen(colptr));
 366
 367                                         /* Encode value, with escaping */
 368                                         strcpy(sql2 + lensql2, "'");
 369                                         lensql2++;
 370                                         for (tmp = colptr; *tmp; tmp++) {
 371                                                 if (*tmp == '\'') {
 372                                                         strcpy(sql2 + lensql2, "''");
 373                                                         lensql2 += 2;
 374                                                 } else if (*tmp == '\\') {
 375                                                         strcpy(sql2 + lensql2, "\\\\");
 376                                                         lensql2 += 2;
 377                                                 } else {
 378                                                         sql2[lensql2++] = *tmp;
 379                                                         sql2[lensql2] = '\0';
 380                                                 }
 381                                         }
 382                                         strcpy(sql2 + lensql2, "',");
 383                                         lensql2 += 2;
 384                                         break;
 385                                 case SQL_TYPE_DATE:
 386                                         {
 387                                                 int year = 0, month = 0, day = 0;
 388                                                 if (sscanf(colptr, "%d-%d-%d", &year, &month, &day) != 3 || year <= 0 ||
 389                                                         month <= 0 || month > 12 || day < 0 || day > 31 ||
 390                                                         ((month == 4 || month == 6 || month == 9 || month == 11) && day == 31) ||
 391                                                         (month == 2 && year % 400 == 0 && day > 29) ||
 392                                                         (month == 2 && year % 100 == 0 && day > 28) ||
 393                                                         (month == 2 && year % 4 == 0 && day > 29) ||
 394                                                         (month == 2 && year % 4 != 0 && day > 28)) {
 395                                                         ast_log(LOG_WARNING, "CDR variable %s is not a valid date ('%s').\n", entry->name, colptr);
 396                                                         break;
 397                                                 }
 398
 399                                                 if (year > 0 && year < 100)
 400                                                         year += 2000;
 401
 402                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 403                                                 LENGTHEN_BUF2(10);
 404                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%04d-%02d-%02d',", year, month, day);
 405                                         }
 406                                         break;
 407                                 case SQL_TYPE_TIME:
 408                                         {
 409                                                 int hour = 0, minute = 0, second = 0;
 410                                                 int count = sscanf(colptr, "%d:%d:%d", &hour, &minute, &second);
 411
 412                                                 if ((count != 2 && count != 3) || hour < 0 || hour > 23 || minute < 0 || minute > 59 || second < 0 || second > 59) {
 413                                                         ast_log(LOG_WARNING, "CDR variable %s is not a valid time ('%s').\n", entry->name, colptr);
 414                                                         break;
 415                                                 }
 416
 417                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 418                                                 LENGTHEN_BUF2(8);
 419                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%02d:%02d:%02d',", hour, minute, second);
 420                                         }
 421                                         break;
 422                                 case SQL_TYPE_TIMESTAMP:
 423                                 case SQL_TIMESTAMP:
 424                                         {
 425                                                 int year = 0, month = 0, day = 0, hour = 0, minute = 0, second = 0;
 426                                                 int count = sscanf(colptr, "%d-%d-%d %d:%d:%d", &year, &month, &day, &hour, &minute, &second);
 427
 428                                                 if ((count != 3 && count != 5 && count != 6) || year <= 0 ||
 429                                                         month <= 0 || month > 12 || day < 0 || day > 31 ||
 430                                                         ((month == 4 || month == 6 || month == 9 || month == 11) && day == 31) ||
 431                                                         (month == 2 && year % 400 == 0 && day > 29) ||
 432                                                         (month == 2 && year % 100 == 0 && day > 28) ||
 433                                                         (month == 2 && year % 4 == 0 && day > 29) ||
 434                                                         (month == 2 && year % 4 != 0 && day > 28) ||
 435                                                         hour > 23 || minute > 59 || second > 59 || hour < 0 || minute < 0 || second < 0) {
 436                                                         ast_log(LOG_WARNING, "CDR variable %s is not a valid timestamp ('%s').\n", entry->name, colptr);
 437                                                         break;
 438                                                 }
 439
 440                                                 if (year > 0 && year < 100)
 441                                                         year += 2000;
 442
 443                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 444                                                 LENGTHEN_BUF2(19);
 445                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "'%04d-%02d-%02d %02d:%02d:%02d',", year, month, day, hour, minute, second);
 446                                         }
 447                                         break;
 448                                 case SQL_INTEGER:
 449                                         {
 450                                                 int integer = 0;
 451                                                 if (sscanf(colptr, "%d", &integer) != 1) {
 452                                                         ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
 453                                                         break;
 454                                                 }
 455
 456                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 457                                                 LENGTHEN_BUF2(12);
 458                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
 459                                         }
 460                                         break;
 461                                 case SQL_BIGINT:
 462                                         {
 463                                                 long long integer = 0;
 464                                                 if (sscanf(colptr, "%lld", &integer) != 1) {
 465                                                         ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
 466                                                         break;
 467                                                 }
 468
 469                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 470                                                 LENGTHEN_BUF2(24);
 471                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%lld,", integer);
 472                                         }
 473                                         break;
 474                                 case SQL_SMALLINT:
 475                                         {
 476                                                 short integer = 0;
 477                                                 if (sscanf(colptr, "%hd", &integer) != 1) {
 478                                                         ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
 479                                                         break;
 480                                                 }
 481
 482                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 483                                                 LENGTHEN_BUF2(6);
 484                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
 485                                         }
 486                                         break;
 487                                 case SQL_TINYINT:
 488                                         {
 489                                                 char integer = 0;
 490                                                 if (sscanf(colptr, "%hhd", &integer) != 1) {
 491                                                         ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
 492                                                         break;
 493                                                 }
 494
 495                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 496                                                 LENGTHEN_BUF2(4);
 497                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
 498                                         }
 499                                         break;
 500                                 case SQL_BIT:
 501                                         {
 502                                                 char integer = 0;
 503                                                 if (sscanf(colptr, "%hhd", &integer) != 1) {
 504                                                         ast_log(LOG_WARNING, "CDR variable %s is not an integer.\n", entry->name);
 505                                                         break;
 506                                                 }
 507                                                 if (integer != 0)
 508                                                         integer = 1;
 509
 510                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 511                                                 LENGTHEN_BUF2(2);
 512                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%d,", integer);
 513                                         }
 514                                         break;
 515                                 case SQL_NUMERIC:
 516                                 case SQL_DECIMAL:
 517                                         {
 518                                                 double number = 0.0;
 519                                                 if (sscanf(colptr, "%lf", &number) != 1) {
 520                                                         ast_log(LOG_WARNING, "CDR variable %s is not an numeric type.\n", entry->name);
 521                                                         break;
 522                                                 }
 523
 524                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 525                                                 LENGTHEN_BUF2(entry->decimals);
 526                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%*.*lf,", entry->decimals, entry->radix, number);
 527                                         }
 528                                         break;
 529                                 case SQL_FLOAT:
 530                                 case SQL_REAL:
 531                                 case SQL_DOUBLE:
 532                                         {
 533                                                 double number = 0.0;
 534                                                 if (sscanf(colptr, "%lf", &number) != 1) {
 535                                                         ast_log(LOG_WARNING, "CDR variable %s is not an numeric type.\n", entry->name);
 536                                                         break;
 537                                                 }
 538
 539                                                 lensql += snprintf(sql + lensql, sizesql - lensql, "%s,", entry->name);
 540                                                 LENGTHEN_BUF2(entry->decimals);
 541                                                 lensql2 += snprintf(sql2 + lensql2, sizesql2 - lensql2, "%lf,", number);
 542                                         }
 543                                         break;
 544                                 default:
 545                                         ast_log(LOG_WARNING, "Column type %d (field '%s:%s:%s') is unsupported at this time.\n", entry->type, tableptr->connection, tableptr->table, entry->name);
 546                                 }
 547                         }
 548                 }
 549
 550                 /* Concatenate the two constructed buffers */
 551                 LENGTHEN_BUF1(lensql2);
 552                 sql[lensql - 1] = ')';
 553                 sql2[lensql2 - 1] = ')';
 554                 strcat(sql + lensql, sql2);
 555
 556                 ast_verb(11, "[%s]\n", sql);
 557                 /* No need to check the connection now; we'll handle any failure in prepare_and_execute */
 558                 obj = ast_odbc_request_obj(tableptr->connection, 0);
 559                 if (obj) {
 560                         stmt = ast_odbc_prepare_and_execute(obj, generic_prepare, sql);
 561                         if (stmt) {
 562                                 SQLRowCount(stmt, &rows);
 563                                 SQLFreeHandle(SQL_HANDLE_STMT, stmt);
 564                         }
 565                         if (rows == 0) {
 566                                 ast_log(LOG_WARNING, "cdr_adaptive_odbc: Insert failed on '%s:%s'.  CDR failed: %s\n", tableptr->connection, tableptr->table, sql);
 567                         }
 568                         ast_odbc_release_obj(obj);
 569                 } else {
 570                         ast_log(LOG_WARNING, "cdr_adaptive_odbc: Unable to retrieve database handle for '%s:%s'.  CDR failed: %s\n", tableptr->connection, tableptr->table, sql);
 571                 }
 572         }
 573         AST_RWLIST_UNLOCK(&odbc_tables);
 574
 575         /* Next time, just allocate buffers that are that big to start with. */
 576         if (sizesql > maxsize)
 577                 maxsize = sizesql;
 578         if (sizesql2 > maxsize2)
 579                 maxsize2 = sizesql2;
 580
 581         ast_free(sql);
 582         ast_free(sql2);
 583         return 0;
 584 }
 585
 586 static int unload_module(void)
 587 {
 588         ast_cdr_unregister(name);
 589         usleep(1);
 590         if (AST_RWLIST_WRLOCK(&odbc_tables)) {
 591                 ast_cdr_register(name, ast_module_info->description, odbc_log);
 592                 ast_log(LOG_ERROR, "Unable to lock column list.  Unload failed.\n");
 593                 return -1;
 594         }
 595
 596         free_config();
 597         AST_RWLIST_UNLOCK(&odbc_tables);
 598         return 0;
 599 }
 600
 601 static int load_module(void)
 602 {
 603         if (AST_RWLIST_WRLOCK(&odbc_tables)) {
 604                 ast_log(LOG_ERROR, "Unable to lock column list.  Load failed.\n");
 605                 return 0;
 606         }
 607
 608         load_config();
 609         AST_RWLIST_UNLOCK(&odbc_tables);
 610         ast_cdr_register(name, ast_module_info->description, odbc_log);
 611         return 0;
 612 }
 613
 614 static int reload(void)
 615 {
 616         if (AST_RWLIST_WRLOCK(&odbc_tables)) {
 617                 ast_log(LOG_ERROR, "Unable to lock column list.  Reload failed.\n");
 618                 return -1;
 619         }
 620
 621         free_config();
 622         load_config();
 623         AST_RWLIST_UNLOCK(&odbc_tables);
 624         return 0;
 625 }
 626
 627 AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Adaptive ODBC CDR backend",
 628         .load = load_module,
 629         .unload = unload_module,
 630         .reload = reload,
 631 );
 632