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