Source File modules/ud/ud_comrol.c

    1    | /***************************************
    2    |   $Revision: 1.26 $
    3    |
    4    |   rollback(), commit(), delete() - rollback, commit update transaction, delete an object
    5    |
    6    |   Status: NOT REVUED, NOT TESTED
    7    |
    8    |  Author(s):       Andrei Robachevsky
    9    |
    10   |   ******************/ /******************
    11   |   Modification History:
    12   |         andrei (17/01/2000) Created.
    13   |   ******************/ /******************
    14   |   Copyright (c) 2000                              RIPE NCC
    15   |
    16   |   All Rights Reserved
    17   |
    18   |   Permission to use, copy, modify, and distribute this software and its
    19   |   documentation for any purpose and without fee is hereby granted,
    20   |   provided that the above copyright notice appear in all copies and that
    21   |   both that copyright notice and this permission notice appear in
    22   |   supporting documentation, and that the name of the author not be
    23   |   used in advertising or publicity pertaining to distribution of the
    24   |   software without specific, written prior permission.
    25   |
    26   |   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
    27   |   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
    28   |   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
    29   |   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
    30   |   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    31   |   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    32   |  ***************************************/
    33   | #include "ud.h"
    34   | #include "ud_int.h"
    35   | #include "ud_comrol.h"
    36   | #include "ud_tr.h"
    37   | #include "rp.h"
    38   |
    39   |
    40   | /************************************************************
    41   | * int UD_rollback()                                         *
    42   | *                                                           *
    43   | * Rolls back the transaction                                *
    44   | *                                                           *
    45   | * It locks all relevant tables and processes the rollback   *
    46   | * General approach is to delete all new records related     *
    47   | * to the transaction (thread_id==thread_ins) and clean up   *
    48   | * old ones (thread_id==thread_upd)                          *
    49   | *                                                           *
    50   | ************************************************************/
    51   |
    52   | int UD_rollback(Transaction_t *tr) {
    53   | GString *query;
    54   | int i, j;
    55   | int sql_err;
    56   |
    57   |  if(ACT_DELETE(tr->action)) return(0);
    58   |
    59   |  if ((query = g_string_sized_new(STR_XXL)) == NULL){
    60   |    ER_perror(FAC_UD, UD_MEM, "cannot allocate gstring\n");
    61   |    tr->succeeded=0;
    62   |    tr->error |= ERROR_U_MEM;
    63   |    die;
    64   |  }
    65   |
    66   | /* Lock all relevant tables */
    67   |    g_string_sprintf(query, "LOCK TABLES ");
    68   |
    69   |    /* we need to lock tables for mntner and role differently, otherwise there will be duplicates (names names, etc.)*/
    70   |    if((tr->class_type!=C_MT) && (tr->class_type!=C_RO)){
    71   |     g_string_sprintfa(query, " %s WRITE,",  DF_get_class_sql_table(tr->class_type));
    72   |
    73   |     for (i=0; tables[tr->class_type][i] != NULL; i++)
    74   |       g_string_sprintfa(query, " %s WRITE,", tables[tr->class_type][i]);
    75   |    } else { /* mntner and role are special cases */
    76   |       g_string_sprintfa(query, " mntner WRITE, person_role WRITE, ");
    77   |    }
    78   |
    79   |     for (i=TAB_START; tables[tr->class_type][i] != NULL; i++)
    80   |       g_string_sprintfa(query, " %s WRITE,", tables[tr->class_type][i]);
    81   |
    82   |     g_string_sprintfa(query, " last WRITE, history WRITE ");
    83   |
    84   |     sql_err=SQ_execute_query(tr->sql_connection, query->str, NULL);
    85   |
    86   | /* Process AUX and LEAF tables */
    87   |     for (i=TAB_START; tables[tr->class_type][i] != NULL; i++) {
    88   |     /* Delete what has been inserted */
    89   |     g_string_sprintf(query, "DELETE FROM %s WHERE object_id=%ld AND thread_id=%d", tables[tr->class_type][i], tr->object_id, tr->thread_ins);
    90   |     sql_err=SQ_execute_query(tr->sql_connection, query->str, NULL);
    91   |
    92   |     /* Normalize what has been updated/touched */
    93   |     g_string_sprintf(query, "UPDATE %s SET thread_id=0 WHERE object_id=%ld AND thread_id=%d", tables[tr->class_type][i], tr->object_id, tr->thread_upd);
    94   |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    95   |   }
    96   |
    97   | /* Process MAIN tables */
    98   | /* Delete if a record was created */
    99   |     g_string_sprintf(query, "DELETE FROM %s WHERE  object_id=%ld AND thread_id=%d",
    100  |                              DF_get_class_sql_table(tr->class_type), tr->object_id, tr->thread_ins);
    101  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    102  |
    103  |     /* This is needed only for objects with possible dummy type, as they are updated with TR_UPDATE */
    104  |     /* We use this tag when committing the update to set dummy==0 */
    105  |     /* XXX may be later this should be reconsidered */
    106  |     g_string_sprintf(query, "UPDATE %s SET thread_id=0 WHERE  object_id=%ld AND thread_id=%d",
    107  |                              DF_get_class_sql_table(tr->class_type), tr->object_id, tr->thread_upd);
    108  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    109  |
    110  | /* Now tables  that might be affected by dummies */
    111  |     for(j=0; j < tr->ndummy; j++)
    112  |     for (i=0; tables[tr->class_type][i] != NULL; i++) {
    113  |     	g_string_sprintf(query, "DELETE FROM %s WHERE object_id=%ld ", tables[tr->class_type][i], tr->dummy_id[j]);
    114  |     	sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    115  |     }
    116  |
    117  |   /* if dummies have been created - get rid of them */
    118  |   for(j=0; j < tr->ndummy; j++){
    119  | 	 g_string_sprintf(query, "DELETE FROM last WHERE object_id=%ld ", tr->dummy_id[j]);
    120  | 	 sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    121  |   }
    122  |
    123  | /* Rollback last and history tables */
    124  |
    125  |     /* Delete what has been inserted */
    126  |     g_string_sprintf(query, "DELETE FROM history WHERE object_id=%ld AND thread_id=%d", tr->object_id, tr->thread_ins);
    127  |     sql_err=SQ_execute_query(tr->sql_connection, query->str, NULL);
    128  |
    129  |     /* Normalize what has been updated/touched */
    130  |     g_string_sprintf(query, "UPDATE history SET thread_id=0 WHERE object_id=%ld AND thread_id=%d", tr->object_id, tr->thread_upd);
    131  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    132  |
    133  |     /* Delete what has been inserted */
    134  |     g_string_sprintf(query, "DELETE FROM last WHERE object_id=%ld AND thread_id=%d", tr->object_id, tr->thread_ins);
    135  |     sql_err=SQ_execute_query(tr->sql_connection, query->str, NULL);
    136  |
    137  |     /* Normalize what has been updated/touched */
    138  |     g_string_sprintf(query, "UPDATE last SET thread_id=0 WHERE object_id=%ld AND thread_id=%d", tr->object_id, tr->thread_upd);
    139  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    140  |
    141  |
    142  |   /* Unlock all tables */
    143  |   g_string_sprintf(query, "UNLOCK TABLES ");
    144  |   sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    145  |
    146  |
    147  |   g_string_free(query, TRUE);
    148  |   return(0);
    149  | } /* rollback() */
    150  |
    151  | /************************************************************
    152  | * int UD_commit_I()                                         *
    153  | *                                                           *
    154  | * Performs I phase of the commit - deletions                *
    155  | *                                                           *
    156  | * General approach is to delete untouched rec (thread_id==0)*
    157  | *                                                           *
    158  | ************************************************************/
    159  |
    160  | int UD_commit_I(Transaction_t *tr) {
    161  | GString *query;
    162  | int err=0;
    163  | int i;
    164  | int sql_err;
    165  |
    166  |
    167  |   if ((query = g_string_sized_new(STR_XXL)) == NULL){
    168  |    ER_perror(FAC_UD, UD_MEM, "cannot allocate gstring\n");
    169  |    tr->succeeded=0;
    170  |    tr->error|=ERROR_U_MEM;
    171  |    die;
    172  |  }
    173  |
    174  | /* Commit the transaction for AUX and LEAF tables that may be affected (taken from object template) */
    175  |   for (i=TAB_START; tables[tr->class_type][i] != NULL; i++) {
    176  |  /* Delete old records from the tables */
    177  |     g_string_sprintf(query, "DELETE FROM %s WHERE object_id=%ld AND thread_id=0 ", tables[tr->class_type][i], tr->object_id);
    178  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    179  |     /*    ER_dbg_va(FAC_UD, ASP_UD_SQL, "%s query (del old): %s\n", UD_TAG, query->str);  */
    180  |   }
    181  |
    182  |  /* Delete old record from the last table */
    183  |     g_string_sprintf(query, "DELETE FROM last WHERE object_id=%ld AND thread_id=0 ", tr->object_id);
    184  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    185  |     /*    ER_dbg_va(FAC_UD, ASP_UD_SQL, "%s query (del old): %s\n", UD_TAG, query->str);  */
    186  |
    187  |
    188  |  g_string_free(query, TRUE);
    189  |  return(err);
    190  | }
    191  |
    192  | /************************************************************
    193  | * int UD_commit_II()                                        *
    194  | *                                                           *
    195  | * Performs I phase of the commit - deletions                *
    196  | * General approach is to clean up all new and updated       *
    197  | * records related to the transaction                        *
    198  | * (thread_id==thread_ins) and (thread_id==thread_upd)       *
    199  | *                                                           *
    200  | ************************************************************/
    201  | int UD_commit_II(Transaction_t *tr) {
    202  | GString *query;
    203  | int err=0;
    204  | int i,j;
    205  | A_Type_t attr_type;
    206  | int sql_err;
    207  |
    208  |
    209  |  if ((query = g_string_sized_new(STR_XXL)) == NULL){
    210  |    ER_perror(FAC_UD, UD_MEM, "cannot allocate gstring\n");
    211  |    tr->succeeded=0;
    212  |    tr->error|=ERROR_U_MEM;
    213  |    die;
    214  |  }
    215  |
    216  |
    217  | /* Commit the transaction for AUX and LEAF tables that may be affected (taken from object template) */
    218  |   for (i=TAB_START; tables[tr->class_type][i] != NULL; i++) {
    219  |  /* Set thread_id to 0 to commit the transaction */
    220  |     g_string_sprintf(query, "UPDATE %s SET thread_id=0 WHERE object_id=%ld", tables[tr->class_type][i], tr->object_id);
    221  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    222  |     /*    ER_dbg_va(FAC_UD, ASP_UD_SQL, "%s query (com new): %s\n", UD_TAG, query->str); */
    223  |   }
    224  |
    225  | /* Commit changes to the last table */
    226  |    g_string_sprintf(query, "UPDATE last SET thread_id=0 WHERE object_id=%ld ", tr->object_id);
    227  |    sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    228  |
    229  | /* Commit changes to the history table */
    230  |    g_string_sprintf(query, "UPDATE history SET thread_id=0 WHERE object_id=%ld ", tr->object_id);
    231  |    sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    232  |
    233  | /* Commit the transaction for the MAIN tables */
    234  |
    235  | /* Commit the transaction for person_role, mntner, as_set, route_set tables */
    236  | /* They require different handling because of dummies */
    237  | /* The rule is: Update: dummy->0, Insert: preserve dummy value */
    238  | /* These tables do not require deletions since we cannot have such condition (object_id==0 AND thread_id==0) */
    239  |  if((tr->class_type==C_PN) || (tr->class_type==C_RO) ||
    240  |    (tr->class_type==C_AS) || (tr->class_type==C_RS) ||
    241  |    (tr->class_type==C_MT)){
    242  |
    243  |  /* Process the rows updated/touched */
    244  |     g_string_sprintf(query, "UPDATE %s SET thread_id=0, dummy=0 WHERE object_id=%ld AND thread_id=%d ",  DF_get_class_sql_table(tr->class_type), tr->object_id, tr->thread_upd);
    245  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    246  |  }
    247  |
    248  |  switch (tr->class_type) {
    249  |    case C_IR:
    250  |    case C_IN:
    251  |    case C_I6:
    252  |    case C_FS:
    253  |     if((tr->save)){ /* Some special processing for tables with the second attribute */
    254  |      /* Update the second field of the table with query like one below */
    255  |      /* UPDATE %s SET thread_id=%d, local_as='%s' WHERE object_id=%ld */
    256  |
    257  |      switch(tr->class_type) {
    258  |       /* Local-as for inet-rtr */
    259  |       case C_IR: attr_type=A_LA;
    260  |                  break;
    261  |       /* netname for inetnum and inet6num */
    262  |       case C_IN:
    263  |       case C_I6: attr_type=A_NA;
    264  |                  break;
    265  |       /* filter for filter-set */
    266  |       case C_FS: attr_type=A_FI;
    267  |                  break;
    268  |       default:
    269  | 		 ER_perror(FAC_UD, UD_BUG, "not valid class type\n");
    270  |                  die;
    271  |                  break;
    272  |      }
    273  |      g_string_sprintf(query, DF_get_update_query(attr_type), DF_get_class_sql_table(tr->class_type), 0, (char *)tr->save, tr->object_id);
    274  |      sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    275  |     }
    276  |     else {
    277  |      ER_perror(FAC_UD, UD_BUG, "second attribute is not saved\n");
    278  |      die;
    279  |     }
    280  |     break;
    281  |
    282  |    default:
    283  |  /* Process all other MAIN tables for updates/inserts and person_role, mntner, as_set, route_set tables for rows inserts */
    284  |     g_string_sprintf(query, "UPDATE %s SET thread_id=0 WHERE object_id=%ld AND thread_id>0", DF_get_class_sql_table(tr->class_type), tr->object_id);
    285  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    286  |     break;
    287  |  }
    288  |
    289  |
    290  | /* for tables that might be affected by dummies */
    291  |  for(j=0; j < tr->ndummy; j++)/* if dummies have been created */
    292  |    for (i=0; tables[tr->class_type][i] != NULL; i++) {
    293  |     g_string_sprintf(query, "UPDATE %s SET thread_id=0 WHERE object_id=%ld ", tables[tr->class_type][i], tr->dummy_id[j]);
    294  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    295  |  }
    296  |
    297  |
    298  |    for(j=0; j < tr->ndummy; j++){/* if dummies have been created*/
    299  | 	 g_string_sprintf(query, "UPDATE last SET thread_id=0 WHERE object_id=%ld ", tr->dummy_id[j]);
    300  | 	 sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    301  |   }
    302  |
    303  |  g_string_free(query, TRUE);
    304  |
    305  |  return(err);
    306  | }
    307  |
    308  |
    309  | /************************************************************
    310  | * int UD_commit()                                           *
    311  | *                                                           *
    312  | * Commits the transaction                                   *
    313  | *                                                           *
    314  | * It locks all relevant tables and processes the 2 phases of*
    315  | * commit. It also performs checkpointing of phases and      *
    316  | * radix tree update                                         *
    317  | *                                                           *
    318  | * We need to split commit into 2 because otherwise it is    *
    319  | * hard to distinguish between commited records and untouched*
    320  | * ones (both have thread_id==0). Splitting and checkpointing*
    321  | * solves this problem                                       *
    322  | *                                                           *
    323  | ************************************************************/
    324  |
    325  | int UD_commit(Transaction_t *tr) {
    326  | GString *query;
    327  | int err=0;
    328  | int i;
    329  | int sql_err;
    330  |
    331  | if(ACT_DELETE(tr->action)) return(0);
    332  |
    333  |  if ((query = g_string_sized_new(STR_XXL)) == NULL){
    334  |    ER_perror(FAC_UD, UD_MEM, "cannot allocate gstring\n");
    335  |    tr->succeeded=0;
    336  |    tr->error|=ERROR_U_MEM;
    337  |    die;
    338  |  }
    339  |
    340  | /* Lock all relevant tables */
    341  |    g_string_sprintf(query, "LOCK TABLES ");
    342  |
    343  |    /* we need to lock tables for mntner and role differently, otherwise there will be duplicates (names names, etc.)*/
    344  | /*   if((tr->class_type!=C_MT) && (tr->class_type!=C_RO)){ */
    345  |    g_string_sprintfa(query, " %s WRITE,",  DF_get_class_sql_table(tr->class_type));
    346  |
    347  |    if((tr->class_type==C_RO)) g_string_sprintfa(query, " mntner WRITE, ");
    348  |    else if((tr->class_type==C_MT)) g_string_sprintfa(query, " person_role WRITE, names WRITE, ");
    349  |     else
    350  |      for (i=0; tables[tr->class_type][i] != NULL; i++)
    351  |         g_string_sprintfa(query, " %s WRITE,", tables[tr->class_type][i]);
    352  |
    353  |    for (i=TAB_START; tables[tr->class_type][i] != NULL; i++)
    354  |       g_string_sprintfa(query, " %s WRITE,", tables[tr->class_type][i]);
    355  |
    356  |    g_string_sprintfa(query, " last WRITE, history WRITE, transaction_rec WRITE ");
    357  |
    358  |    sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    359  |
    360  |
    361  |   /* Perform first phase - deletions */
    362  |   UD_commit_I(tr);
    363  |   /* checkpoint this step */
    364  |   CP_COMMIT_I_PASSED(tr->action); TR_update_status(tr);
    365  |   /* Perform first phase - updates */
    366  |   UD_commit_II(tr);
    367  |   /* checkpoint this step */
    368  |   CP_COMMIT_II_PASSED(tr->action); TR_update_status(tr);
    369  |
    370  |  /* Unlock all tables */
    371  |  g_string_sprintf(query, "UNLOCK TABLES ");
    372  |  sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    373  |
    374  |  /* Update radix tree for route, inetnum and inaddr-arpa domain*/
    375  |  err = UD_update_rx(tr, RX_OPER_CRE);
    376  |
    377  |  g_string_free(query, TRUE);
    378  |  return(err);
    379  | } /* commit() */
    380  |
    381  | /************************************************************
    382  | * int UD_check_ref()                                        *
    383  | *                                                           *
    384  | * Checks if the object to be deleted is referenced from     *
    385  | * anywhere                                                  *
    386  | *                                                           *
    387  | * 0 - go ahead                                              *
    388  | * -1 - deletion will compromise ref.integrity               *
    389  | * Result is also reflected in tr->succeeded                 *
    390  | ************************************************************/
    391  | int UD_check_ref(Transaction_t *tr)
    392  | {
    393  | GString *query;
    394  | int i;
    395  | long ref_id;
    396  | long num_rec;
    397  |
    398  | char sobject_id[STR_M];
    399  | char *sql_str;
    400  |
    401  |  /* Try to allocate g_string. Return on error */
    402  |  if ((query = g_string_sized_new(STR_XXL)) == NULL){
    403  |    ER_perror(FAC_UD, UD_MEM, "cannot allocate gstring\n");
    404  |    tr->succeeded=0;
    405  |    tr->error|=ERROR_U_MEM;
    406  |    die;
    407  |  }
    408  |
    409  |
    410  | /* Check for referential integrity of deletion */
    411  |
    412  |    sprintf(sobject_id, "%ld", tr->object_id);
    413  |
    414  |    switch(tr->class_type){
    415  |     case C_PN:
    416  |     case C_RO:
    417  |
    418  |        /* Check that this person/role object is not referenced */
    419  |
    420  |        for (i=0; t_ipn[i] != NULL; i++) {
    421  |         /* Calculate number of references */
    422  |         sql_str= get_field_str(tr->sql_connection, "COUNT(*)", t_ipn[i], "pe_ro_id", sobject_id, NULL);
    423  |         if(sql_str) {
    424  |          num_rec = atol(sql_str);  free(sql_str);
    425  |          ref_id=tr->object_id;
    426  |          /* Check if it is a self reference (for role objects) */
    427  |          if(num_rec==1) {
    428  |           sql_str= get_field_str(tr->sql_connection, "object_id", t_ipn[i], "pe_ro_id", sobject_id, NULL);
    429  |           if(sql_str) {
    430  |            ref_id = atol(sql_str);  free(sql_str);
    431  |           } else {
    432  |            tr->succeeded=0; tr->error |= ERROR_U_DBS; break;
    433  |           }
    434  |          }
    435  |          /* If there are references (and not the only self reference) we cannot delete */
    436  |          if((num_rec>1) || (ref_id!=tr->object_id)) {
    437  |            g_string_sprintfa(tr->error_script,"E[%d][%ld]:ref integrity: %s\n" ,ERROR_U_OBJ, num_rec, t_ipn[i]);
    438  |            tr->succeeded=0; tr->error |= ERROR_U_OBJ;
    439  |          }
    440  |         } else {
    441  |         /* SQL error occured */
    442  |          tr->succeeded=0; tr->error |= ERROR_U_DBS;
    443  |          g_string_sprintfa(tr->error_script,"E[%d][%s]:%s\n", ERROR_U_DBS, t_ipn[i], SQ_error(tr->sql_connection));
    444  |         }
    445  |        }
    446  |
    447  |        /* Check that this person/role object is not referenced by name (legacy stuff) */
    448  |        /* But allow overriding this check in NRTM mode and with override_integrity    */
    449  |        if(IS_DUMMY_ALLOWED(tr->mode))break;
    450  |
    451  |        for (i=0; t_ipn[i] != NULL; i++) {
    452  |         /* Calculate number of references */
    453  |
    454  |         g_string_sprintf(query, "SELECT COUNT(*) FROM %s, person_role "
    455  |                                 "WHERE person_role.object_id=%s.pe_ro_id "
    456  |                                 "AND person_role.nic_hdl='%s' ", t_ipn[i], t_ipn[i], tr->save);
    457  |
    458  |         sql_str= get_qresult_str(tr->sql_connection, query->str);
    459  |         if(sql_str) {
    460  |          num_rec = atol(sql_str);  free(sql_str);
    461  |          /* If there are references (no self reference is possible in this case) we cannot delete */
    462  |          if(num_rec>0) {
    463  |            g_string_sprintfa(tr->error_script,"E[%d][%ld]:ref integrity: %s\n" ,ERROR_U_OBJ, num_rec, t_ipn[i]);
    464  |            tr->succeeded=0; tr->error |= ERROR_U_OBJ;
    465  |          }
    466  |         } else {
    467  |         /* SQL error occured */
    468  |          tr->succeeded=0; tr->error |= ERROR_U_DBS;
    469  |          g_string_sprintfa(tr->error_script,"E[%d][%s]:%s\n", ERROR_U_DBS, t_ipn[i], SQ_error(tr->sql_connection));
    470  |         }
    471  |        }
    472  |
    473  |        break;
    474  |
    475  |     case C_MT:
    476  |
    477  |         /* Check that this mntner object is not referenced */
    478  |
    479  |        for (i=0; t_imt[i] != NULL; i++) {
    480  |        /* Calculate number of references */
    481  |         sql_str= get_field_str(tr->sql_connection, "COUNT(*)", t_imt[i], "mnt_id", sobject_id, NULL);
    482  |         if(sql_str) {
    483  |          num_rec = atol(sql_str);  free(sql_str);
    484  |          ref_id=tr->object_id;
    485  |          /* Check if it is a self reference  */
    486  |          if(num_rec==1) {
    487  |             sql_str= get_field_str(tr->sql_connection, "object_id", t_imt[i], "mnt_id", sobject_id, NULL);
    488  |             if(sql_str) {
    489  |               ref_id = atol(sql_str);  free(sql_str);
    490  |             } else {
    491  |               tr->succeeded=0; tr->error |= ERROR_U_DBS; break;
    492  |             }
    493  |          }
    494  |          /* If there are references (and not the only self reference) we cannot delete */
    495  |          if((num_rec>1) || (ref_id!=tr->object_id)) {
    496  |            g_string_sprintfa(tr->error_script,"E[%d][%ld]:ref integrity: %s\n" ,ERROR_U_OBJ, num_rec, t_imt[i]);
    497  |            tr->succeeded=0; tr->error |= ERROR_U_OBJ;
    498  |          }
    499  |         } else {
    500  |          tr->succeeded=0; tr->error |= ERROR_U_DBS;
    501  |         }
    502  |        }
    503  |        break;
    504  |
    505  |     case C_RS:
    506  |     case C_AS:
    507  |         /* Check that this set object is not referenced */
    508  |         /* Calculate number of references */
    509  |         sql_str= get_field_str(tr->sql_connection, "COUNT(*)", "member_of", "set_id", sobject_id, NULL);
    510  |         if(sql_str) {
    511  |          num_rec = atol(sql_str);  free(sql_str);
    512  |          /* XXX though set may contain other sets as memebers, */
    513  |          /* there is no member-of attribute in these objects. */
    514  |          /* So no self-reference is possible */
    515  |          if(num_rec!=0) {
    516  |            g_string_sprintfa(tr->error_script,"I[%d][%ld]:ref integrity: %s\n" ,ERROR_U_OBJ, num_rec, "member_of");
    517  | 	  /* XXX Do not refuse the transaction but change the object to dummy */
    518  |            tr->action |=TA_DUMMY;
    519  |          }
    520  |         } else {
    521  |          tr->succeeded=0; tr->error |= ERROR_U_DBS;
    522  |         }
    523  |         break;
    524  |
    525  |     default:
    526  |         break;
    527  |    }
    528  |
    529  |  g_string_free(query, TRUE);
    530  |
    531  |  /* Check if we have passed referential integrity check */
    532  |  if(tr->succeeded) return(0); else return(-1);
    533  |
    534  | }
    535  |
    536  | /************************************************************
    537  | * int UD_delete()                                              *
    538  | *                                                           *
    539  | * Deletes the object                                        *
    540  | *                                                           *
    541  | * It deletes the object from all relevant tables.
    542  | * Then it updates the radix tree for routes, inetnums
    543  | * and rev.domains           *
    544  | *                                                           *
    545  | ************************************************************/
    546  | int UD_delete(Transaction_t *tr)
    547  | {
    548  | GString *query;
    549  | int err=0;
    550  | int i;
    551  | long timestamp;
    552  | int sql_err;
    553  | int ref_set;
    554  |
    555  | /* if we are deliting referenced set, we need to  perform delete a bit differently */
    556  | /* no deletions of aux tables */
    557  | /* dummy main, instead of del */
    558  | /* dummy last instead of empty */
    559  | /* So let's determine if we are deliting referenced set */
    560  | if ((tr->class_type==C_AS || tr->class_type==C_RS) && ACT_UPD_DUMMY(tr->action)) ref_set = 1; else ref_set = 0;
    561  |
    562  |  /* Try to allocate g_string. Return on error */
    563  |  if ((query = g_string_sized_new(STR_XXL)) == NULL){
    564  |    ER_perror(FAC_UD, UD_MEM, "cannot allocate gstring\n");
    565  |    tr->succeeded=0;
    566  |    tr->error|=ERROR_U_MEM;
    567  |    die;
    568  |  }
    569  |
    570  |
    571  | /* Lock all relevant tables */
    572  |    g_string_sprintf(query, "LOCK TABLES ");
    573  |
    574  |    /* we need to lock tables for mntner and role differently, otherwise there will be duplicates (names names, etc.)*/
    575  |    if((tr->class_type!=C_MT) && (tr->class_type!=C_RO)){
    576  |     g_string_sprintfa(query, " %s WRITE,",  DF_get_class_sql_table(tr->class_type));
    577  |
    578  |     for (i=0; tables[tr->class_type][i] != NULL; i++)
    579  |       g_string_sprintfa(query, " %s WRITE,", tables[tr->class_type][i]);
    580  |    } else { /* mntner and role are special cases */
    581  |       g_string_sprintfa(query, " mntner WRITE, person_role WRITE, ");
    582  |    }
    583  |
    584  |     for (i=TAB_START; tables[tr->class_type][i] != NULL; i++)
    585  |       g_string_sprintfa(query, " %s WRITE,", tables[tr->class_type][i]);
    586  |
    587  |     g_string_sprintfa(query, " last WRITE, history WRITE ");
    588  |
    589  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    590  |     if (sql_err) {
    591  | 	 ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    592  |          tr->succeeded=0;
    593  |          tr->error |=ERROR_U_DBS;
    594  | 	 die;
    595  |     }
    596  | /* Update the history table */
    597  | /* XXX Crash recovery: */
    598  | /* If history was not updated - we will create a record */
    599  | /* If history was already updated but last wasn't - we will just replace the record */
    600  | /* If history and last were already updated - we will have an empty query - 0 rows should be affected */
    601  |     g_string_sprintf(query,     "REPLACE history "
    602  | 				"SELECT 0, object_id, sequence_id, timestamp, object_type, object, pkey, serial, prev_serial "
    603  |        				"FROM last "
    604  |        				"WHERE object_id=%ld AND sequence_id=%ld ", tr->object_id, tr->sequence_id);
    605  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    606  |     if (sql_err) {
    607  | 	 ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    608  |          tr->succeeded=0;
    609  |          tr->error |=ERROR_U_DBS;
    610  | 	 die;
    611  |     }
    612  |
    613  | /* Delete records from the leaf and aux tables */
    614  |     for (i=TAB_START; tables[tr->class_type][i] != NULL; i++) {
    615  |      g_string_sprintf(query, "DELETE FROM %s WHERE object_id=%ld ", tables[tr->class_type][i], tr->object_id);
    616  |      sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    617  |     /*    ER_dbg_va(FAC_UD, ASP_UD_SQL, "%s query (delete): %s\n", UD_TAG, query->str);*/
    618  |        if (sql_err) {
    619  | 	 ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    620  |          tr->succeeded=0;
    621  |          tr->error |=ERROR_U_DBS;
    622  | 	 die;
    623  |        }
    624  |     }
    625  |
    626  |
    627  |  /* For all object except as-sets and route-sets we need to empty MAIN table */
    628  |  /* For referenced sets, however, we transform them to dummy, not delete */
    629  |  if (ref_set == 0) {
    630  |
    631  | /* Process the MAIN table  */
    632  |     g_string_sprintf(query, "DELETE FROM %s WHERE object_id=%ld ", DF_get_class_sql_table(tr->class_type), tr->object_id);
    633  |
    634  |
    635  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    636  |     if (sql_err) {
    637  | 	 ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    638  |          tr->succeeded=0;
    639  |          tr->error |=ERROR_U_DBS;
    640  | 	 die;
    641  |     }
    642  |
    643  |  } else { /* this is the referenced set */
    644  |  /* we need to 'dummy' MAIN */
    645  |     g_string_sprintf(query, "UPDATE %s SET dummy=1 WHERE object_id=%ld ", DF_get_class_sql_table(tr->class_type), tr->object_id);
    646  |
    647  |     sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    648  |     if (sql_err) {
    649  |          ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    650  |          tr->succeeded=0;
    651  |          tr->error |= ERROR_U_DBS;
    652  |          die;
    653  |     }
    654  |  }
    655  |
    656  |   /* insert new version into the last */
    657  |   timestamp=time(NULL);
    658  |
    659  |  if(ref_set == 0)
    660  |  {
    661  |  /* empty the contents, but leave in the table to restrict re-use of object_id */
    662  |  /* XXX change sequence_id=0 so it is easy to say that the object was deleted */
    663  |   g_string_sprintf(query, "UPDATE last SET object='', timestamp=%ld, sequence_id=0  WHERE object_id=%ld ", timestamp, tr->object_id);
    664  |
    665  |   sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    666  |   if (sql_err) {
    667  | 	 ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    668  |          tr->succeeded=0;
    669  |          tr->error |= ERROR_U_DBS;
    670  | 	 die;
    671  |   }
    672  |  } else {/* this is the referenced set */
    673  |  /* 'dummy' the contents, but leave in the table to prevent re-use of object_id */
    674  |  g_string_sprintf(query, "UPDATE last SET object='DUMMY SET', object_type=%d, sequence_id=%ld, timestamp=%ld  WHERE object_id=%ld ", DUMMY_TYPE, tr->sequence_id+1, timestamp, tr->object_id);
    675  |
    676  |  sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    677  |  if (sql_err) {
    678  |      ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    679  |      tr->succeeded=0;
    680  |      tr->error |= ERROR_U_DBS;
    681  |     die;
    682  |    }
    683  |  }
    684  |
    685  |
    686  |  /* Unlock all tables */
    687  |   g_string_sprintf(query, "UNLOCK TABLES ");
    688  |   sql_err = SQ_execute_query(tr->sql_connection, query->str, (SQ_result_set_t **)NULL);
    689  |   if (sql_err) {
    690  | 	ER_perror(FAC_UD, UD_SQL, "%s[%s]\n", SQ_error(tr->sql_connection), query->str);
    691  |         tr->succeeded=0;
    692  |         tr->error |= ERROR_U_DBS;
    693  | 	die;
    694  |   }
    695  |
    696  |
    697  |   g_string_free(query, TRUE);
    698  |
    699  |   return(err);
    700  |
    701  | } /* delete() */
    702  |
    703  |
    704  |
    705  |      	       /* Do more in the forest
    706  |    * Update radix tree for route and inetnum
    707  |    */
    708  |
    709  | int UD_update_rx(Transaction_t *tr, rx_oper_mt mode)
    710  | {
    711  | rp_upd_pack_t *packptr = tr->packptr;
    712  | int err=0;
    713  |
    714  |
    715  |   if(!IS_STANDALONE(tr->mode)) { /* only if server */
    716  |
    717  |
    718  |     /* Only for these types of objects and only if we have collected data (tr->save != NULL) */
    719  |     if( (   (tr->class_type==C_RT)
    720  | 	 || (tr->class_type==C_IN)
    721  | 	 || (tr->class_type==C_I6)
    722  | 	 || (tr->class_type==C_DN))) {
    723  |       /* Collect some data for radix tree and NH repository update for deletes*/
    724  |       if(mode == RX_OPER_DEL)g_slist_foreach((tr->object)->attributes, get_rx_data, tr);
    725  |
    726  |       /* Except for regular domains we need to update radix tree */
    727  |       if(ACT_UPD_RX(tr->action)){
    728  |        packptr->key = tr->object_id;
    729  |        if( RP_pack_node(mode, packptr, tr->source_hdl) == RX_OK ) {
    730  | 	err = 0;
    731  |        } else {
    732  | 	err = (-1);
    733  | 	ER_perror(FAC_UD, UD_BUG, "cannot update radix tree\n");
    734  | 	die;
    735  |        }
    736  |       } /* update radix tree */
    737  |     }
    738  |   }
    739  |   return(err);
    740  | }
    741  |
    742  |
    743  |