[moira.git] / server / increment.pc

/* $Id$
 *
 * Deal with incremental updates
 *
 * Copyright (C) 1989-1998 by the Massachusetts Institute of Technology
 * For copying and distribution information, please see the file
 * <mit-copyright.h>.
 */

#include <mit-copyright.h>
#include "mr_server.h"
#include "query.h"
#include "qrtn.h"

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

EXEC SQL INCLUDE sqlca;

RCSID("$Header$");

extern char *whoami;
extern char *table_name[];
extern int num_tables;

int inc_pid = 0;
int inc_running = 0;
time_t inc_started;

#define MAXARGC 15

EXEC SQL WHENEVER SQLERROR DO dbmserr();

/* structures to save before args */
static char *before[MAXARGC];
static int beforec;
static enum tables beforetable;

/* structures to save after args */
static char *after[MAXARGC];
static int afterc;

/* structures to save entire sets of incremental changes */
struct save_queue *incremental_sq = NULL;
struct save_queue *incremental_exec = NULL;
struct iupdate {
  char *table;
  int beforec;
  char **before;
  int afterc;
  char **after;
  char *service;
};

void next_incremental(void);
char **copy_argv(char **argv, int argc);
void free_argv(char **argv, int argc);
int table_num(char *table);

void incremental_init(void)
{
  int i;

  if (!incremental_sq)
    incremental_sq = sq_create();
  if (!incremental_exec)
    incremental_exec = sq_create();

  for (i = 0; i < MAXARGC; i++)
    {
      before[i] = xmalloc(MAX_FIELD_WIDTH);
      after[i] = xmalloc(MAX_FIELD_WIDTH);
    }
}


/* record the state of a table row before it is changed */

void incremental_before(enum tables table, char *qual, char **argv)
{
  EXEC SQL BEGIN DECLARE SECTION;
  int id;
  EXEC SQL END DECLARE SECTION;

  char *name, *name2;

  beforetable = table;

  switch (table)
    {
    case USERS_TABLE:
      sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, "
	      "u.winconsoleshell, u.last, u.first, u.middle, u.status, "
	      "u.clearid, u.type, u.users_id FROM users u WHERE %s", qual);
      dosql(before);
      beforec = 11;
      break;
    case MACHINE_TABLE:
      sprintf(stmt_buf, "SELECT m.name, m.vendor, m.mach_id FROM machine m "
	      "WHERE %s", qual);
      dosql(before);
      beforec = 3;
      break;
    case CLUSTERS_TABLE:
      sprintf(stmt_buf, "SELECT c.name, c.description, c.location, "
	      "c.clu_id FROM clusters c WHERE %s", qual);
      dosql(before);
      beforec = 4;
      break;
    case CONTAINERS_TABLE:
      sprintf(stmt_buf, "SELECT c.name, c.description, c.location, c.contact, "
	      "c.acl_type, c.acl_id, c.cnt_id FROM containers c WHERE %s", 
	      qual);
      dosql(before);
      beforec = 7;
      break;
    case MCMAP_TABLE:
      strcpy(before[0], argv[0]);
      strcpy(before[1], argv[1]);
      beforec = 2;
      break;
    case SVC_TABLE:
      strcpy(before[0], argv[0]);
      strcpy(before[1], argv[1]);
      strcpy(before[2], argv[2]);
      beforec = 3;
      break;
    case FILESYS_TABLE:
      sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, "
	      "fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, "
	      "fs.createflg, fs.lockertype, fs.filsys_id FROM filesys fs "
	      "WHERE %s", qual);
      dosql(before);
      name = xmalloc(0);
      id = atoi(before[2]);
      id_to_name(id, MACHINE_TABLE, &name);
      strcpy(before[2], name);
      id = atoi(before[7]);
      id_to_name(id, USERS_TABLE, &name);
      strcpy(before[7], name);
      id = atoi(before[8]);
      id_to_name(id, LIST_TABLE, &name);
      strcpy(before[8], name);
      free(name);
      beforec = 12;
      break;
    case QUOTA_TABLE:
      strcpy(before[0], "?");
      strcpy(before[1], argv[1]);
      strcpy(before[2], "?");
      sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs "
	      "WHERE %s AND fs.filsys_id = q.filsys_id", qual);
      dosql(&(before[3]));
      strcpy(before[2], argv[1]);
      beforec = 5;
      break;
    case LIST_TABLE:
      sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, "
	      "l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, "
	      "l.description, l.list_id FROM list l WHERE %s", qual);
      dosql(before);
      beforec = 11;
      break;
    case IMEMBERS_TABLE:
      id = (int) argv[0];
      sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, "
	      "grouplist, gid FROM list WHERE list_id = %d", id);
      dosql(&(before[3]));
      name = xmalloc(0);
      id_to_name(id, LIST_TABLE, &name);
      name2 = xmalloc(0);
      strcpy(before[0], name);
      strcpy(before[1], argv[1]);
      id = (int) argv[2];
      beforec = 10;
      if (!strcmp(before[1], "USER"))
	{
	  id_to_name(id, USERS_TABLE, &name2);
	  EXEC SQL SELECT status, users_id INTO :before[9], :before[11] 
	    FROM users WHERE users_id = :id;
	  EXEC SQL SELECT list_id INTO :before[10] FROM list
	    WHERE name = :name;
	  beforec = 12;
      }
      else if (!strcmp(before[1], "LIST"))
	{
	  id_to_name(id, LIST_TABLE, &name2);
	  EXEC SQL SELECT list_id INTO :before[9] FROM list
	    WHERE name = :name;
	  sprintf(before[10], "%d", id);
	  beforec = 11;
	}
      else if (!strcmp(before[1], "STRING") || !strcmp(before[1], "KERBEROS"))
	{
	  id_to_name(id, STRINGS_TABLE, &name2);
	  EXEC SQL SELECT list_id INTO :before[9] FROM list
	    WHERE name = :name;
	}
      strcpy(before[2], name2);
      free(name);
      free(name2);
      break;
    default:
	/*
	com_err(whoami, 0, "requested incremental on unexpected table `%s'",
		table_name[table]);
	*/
      break;
    }
}


void incremental_clear_before(void)
{
  beforec = 0;
}


/* add an element to the incremental queue for the changed row */

void incremental_after(enum tables table, char *qual, char **argv)
{
  char *name, *name2;
  EXEC SQL BEGIN DECLARE SECTION;
  int id;
  EXEC SQL END DECLARE SECTION;
  struct iupdate *iu;

  switch (table)
    {
    case USERS_TABLE:
      sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, "
	      "u.winconsoleshell, u.last, u.first, u.middle, u.status, "
	      "u.clearid, u.type, u.users_id FROM users u WHERE %s", qual);
      dosql(after);
      afterc = 11;
      break;
    case MACHINE_TABLE:
      sprintf(stmt_buf, "SELECT m.name, m.vendor, m.mach_id FROM machine m "
	      "WHERE %s", qual);
      dosql(after);
      afterc = 3;
      break;
    case CLUSTERS_TABLE:
      sprintf(stmt_buf, "SELECT c.name, c.description, c.location, "
	      "c.clu_id FROM clusters c WHERE %s", qual);
      dosql(after);
      afterc = 4;
      break;
    case CONTAINERS_TABLE:
      sprintf(stmt_buf, "SELECT c.name, c.description, c.location, c.contact, "
	      "c.acl_type, c.acl_id, c.cnt_id FROM containers c WHERE %s",
	      qual);
      dosql(after);
      afterc = 7;
      break;
    case MCMAP_TABLE:
      strcpy(after[0], argv[0]);
      strcpy(after[1], argv[1]);
      afterc = 2;
      break;
    case SVC_TABLE:
      strcpy(after[0], argv[0]);
      strcpy(after[1], argv[1]);
      strcpy(after[2], argv[2]);
      afterc = 3;
      break;
    case FILESYS_TABLE:
      sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, "
	      "fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, "
	      "fs.createflg, fs.lockertype, fs.filsys_id FROM filesys fs "
	      "WHERE %s", qual);
      dosql(after);
      name = xmalloc(0);
      id = atoi(after[2]);
      id_to_name(id, MACHINE_TABLE, &name);
      strcpy(after[2], name);
      id = atoi(after[7]);
      id_to_name(id, USERS_TABLE, &name);
      strcpy(after[7], name);
      id = atoi(after[8]);
      id_to_name(id, LIST_TABLE, &name);
      strcpy(after[8], name);
      free(name);
      afterc = 12;
      break;
    case QUOTA_TABLE:
      strcpy(after[0], "?");
      strcpy(after[1], argv[1]);
      strcpy(after[2], "?");
      sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs "
	      "WHERE %s and fs.filsys_id = q.filsys_id and q.type = '%s'",
	      qual, argv[1]);
      dosql(&(after[3]));
      afterc = 5;
      break;
    case LIST_TABLE:
      sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, "
	      "l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, "
	      "l.description, l.list_id FROM list l WHERE %s", qual);
      dosql(after);
      afterc = 11;
      break;
    case IMEMBERS_TABLE:
      id = (int) argv[0];
      sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, "
	      "grouplist, gid FROM list WHERE list_id = %d", id);
      dosql(&(after[3]));
      name = xmalloc(0);
      id_to_name(id, LIST_TABLE, &name);
      name2 = xmalloc(0);
      strcpy(after[0], name);
      strcpy(after[1], argv[1]);
      id = (int) argv[2];
      afterc = 10;
      if (!strcmp(after[1], "USER"))
	{
	  id_to_name(id, USERS_TABLE, &name2);
	  EXEC SQL SELECT status, users_id INTO :after[9], :after[11]
	    FROM users WHERE users_id = :id;
	  EXEC SQL SELECT list_id INTO :after[10] FROM list
	    WHERE name = :name;
	  afterc = 12;
	}
      else if (!strcmp(after[1], "LIST"))
	{
	  id_to_name(id, LIST_TABLE, &name2);
	  EXEC SQL SELECT list_id INTO :after[9] FROM list
	    WHERE name = :name;
	  sprintf(after[10], "%d", id);
	  afterc = 11;
	}
      else if (!strcmp(after[1], "STRING") || !strcmp(after[1], "KERBEROS"))
	{
	  id_to_name(id, STRINGS_TABLE, &name2);
	  EXEC SQL SELECT list_id INTO :after[9] FROM list
	    WHERE name = :name;
	}
      strcpy(after[2], name2);
      free(name);
      free(name2);
      break;
    case NO_TABLE:
      afterc = 0;
      table = beforetable;
      break;
    default:
	/*
	com_err(whoami, 0, "requested incremental on unexpected table `%s'",
		table_name[table]);
	*/
      break;
    }

  iu = xmalloc(sizeof(struct iupdate));
  iu->table = table_name[table];
  iu->beforec = beforec;
  iu->before = copy_argv(before, beforec);
  iu->afterc = afterc;
  iu->after = copy_argv(after, afterc);
  sq_save_data(incremental_sq, iu);
}

void incremental_clear_after(void)
{
  incremental_after(NO_TABLE, NULL, NULL);
}


/* Called when the current transaction is committed to start any queued
 * incremental updates.  This caches the update table the first time it
 * is called.
 */

struct inc_cache {
  struct inc_cache *next;
  char *table, *service;
};


void incremental_update(void)
{
  static int inited = 0;
  static struct inc_cache *cache;
  struct inc_cache *c;
  EXEC SQL BEGIN DECLARE SECTION;
  char tab[INCREMENTAL_TABLE_NAME_SIZE], serv[INCREMENTAL_SERVICE_SIZE];
  EXEC SQL END DECLARE SECTION;
  struct iupdate *iu, *iu_save;

  if (!inited)
    {
      inited++;

      EXEC SQL DECLARE inc CURSOR FOR SELECT table_name, service
	FROM incremental;
      EXEC SQL OPEN inc;
      while (1)
	{
	  EXEC SQL FETCH inc INTO :tab, :serv;
	  if (sqlca.sqlcode)
	    break;
	  c = xmalloc(sizeof(struct inc_cache));
	  c->next = cache;
	  c->table = xstrdup(strtrim(tab));
	  c->service = xstrdup(strtrim(serv));
	  cache = c;
	}
      EXEC SQL CLOSE inc;
      EXEC SQL COMMIT WORK;
    }

  while (sq_remove_data(incremental_sq, &iu))
    {
      for (c = cache; c; c = c->next)
	{
	  if (!strcmp(c->table, iu->table))
	    {
	      iu->service = c->service;
	      iu_save = xmalloc(sizeof(struct iupdate));
	      iu_save->service = iu->service;
	      iu_save->table = iu->table;
	      iu_save->beforec = iu->beforec;
	      iu_save->afterc = iu->afterc;
	      iu_save->before = copy_argv(iu->before, iu->beforec);
	      iu_save->after = copy_argv(iu->after, iu->afterc);
	      sq_save_data(incremental_exec, iu_save);
	    }
	}
      if (!c)
	{
	  free_argv(iu->before, iu->beforec);
	  free_argv(iu->after, iu->afterc);
	  free(iu);
	}
    }
  if (inc_running == 0)
    next_incremental();
}

/* Pro*C 2.2.4 can't cope with the sigset_t below, at least in Solaris 2.6.
   We add DEFINE=_PROC_ to the proc invocation and then #ifndef that around
   this function so proc will pass it through without reading it. */

#ifndef _PROC_
void next_incremental(void)
{
  struct iupdate *iu;
  char *argv[MAXARGC * 2 + 4], cafter[3], cbefore[3], prog[MAXPATHLEN];
  int i;
  sigset_t sigs;

  if (!incremental_exec)
    incremental_init();

  if (sq_empty(incremental_exec) ||
      (inc_running && now - inc_started < INC_TIMEOUT))
    return;

  if (inc_running)
    com_err(whoami, 0, "incremental timeout on pid %d", inc_pid);

  sq_remove_data(incremental_exec, &iu);
  argv[1] = iu->table;
  sprintf(cbefore, "%d", iu->beforec);
  argv[2] = cbefore;
  sprintf(cafter, "%d", iu->afterc);
  argv[3] = cafter;
  for (i = 0; i < iu->beforec; i++)
    argv[4 + i] = iu->before[i];
  for (i = 0; i < iu->afterc; i++)
    argv[4 + iu->beforec + i] = iu->after[i];

  sprintf(prog, "%s/%s.incr", BIN_DIR, iu->service);
  argv[0] = prog;
  argv[4 + iu->beforec + iu->afterc] = 0;

  sigemptyset(&sigs);
  sigaddset(&sigs, SIGCHLD);
  sigprocmask(SIG_BLOCK, &sigs, NULL);
  inc_pid = vfork();
  switch (inc_pid)
    {
    case 0:
      execv(prog, argv);
      _exit(1);
    case -1:
      com_err(whoami, 0, "Failed to start incremental update");
      break;
    default:
      inc_running = 1;
      inc_started = now;
    }
  sigprocmask(SIG_UNBLOCK, &sigs, NULL);

  free_argv(iu->before, iu->beforec);
  free_argv(iu->after, iu->afterc);
  free(iu);
}
#endif

/* Called when the current transaction is aborted to throw away any queued
 * incremental updates
 */

void incremental_flush(void)
{
  struct iupdate *iu;

  while (sq_get_data(incremental_sq, &iu))
    {
      free_argv(iu->before, iu->beforec);
      free_argv(iu->after, iu->afterc);
      free(iu);
    }
  sq_destroy(incremental_sq);
  incremental_sq = sq_create();
}


char **copy_argv(char **argv, int argc)
{
  char **ret = xmalloc(sizeof(char *) * argc);
  while (--argc >= 0)
    ret[argc] = xstrdup(strtrim(argv[argc]));
  return ret;
}

void free_argv(char **argv, int argc)
{
  while (--argc >= 0)
    free(argv[argc]);
  free(argv);
}

int table_num(char *name)
{
  int i;

  for (i = num_tables - 1; i; i--)
    {
      if (!strcmp(table_name[i], name))
	break;
    }

  return i; /* 0 = "none" if no match */
}
Commit	Line	Data
7ac48069	1	/* $Id$
32cfe906	2	*
7ac48069	3	* Deal with incremental updates
5eaef520	4	*
7ac48069	5	* Copyright (C) 1989-1998 by the Massachusetts Institute of Technology
	6	* For copying and distribution information, please see the file
	7	* <mit-copyright.h>.
32cfe906	8	*/
32cfe906	9
32cfe906	10	#include <mit-copyright.h>
32cfe906	11	#include "mr_server.h"
03c05291	12	#include "query.h"
03c05291	13	#include "qrtn.h"
7ac48069	14
7ac48069	15	#include <signal.h>
85330553	16	#include <stdio.h>
7ac48069	17	#include <stdlib.h>
	18	#include <string.h>
	19	#include <unistd.h>
	20
45bf7573	21	EXEC SQL INCLUDE sqlca;
32cfe906	22
7ac48069	23	RCSID("$Header$");
7ac48069	24
32cfe906	25	extern char *whoami;
03c05291	26	extern char *table_name[];
03c05291	27	extern int num_tables;
32cfe906	28
	29	int inc_pid = 0;
	30	int inc_running = 0;
	31	time_t inc_started;
	32
	33	#define MAXARGC 15
	34
03c05291	35	EXEC SQL WHENEVER SQLERROR DO dbmserr();
45bf7573	36
32cfe906	37	/* structures to save before args */
32cfe906	38	static char *before[MAXARGC];
32cfe906	39	static int beforec;
03c05291	40	static enum tables beforetable;
32cfe906	41
32cfe906	42	/* structures to save after args */
32cfe906	43	static char *after[MAXARGC];
32cfe906	44	static int afterc;
	45
	46	/* structures to save entire sets of incremental changes */
	47	struct save_queue *incremental_sq = NULL;
	48	struct save_queue *incremental_exec = NULL;
	49	struct iupdate {
5eaef520	50	char *table;
	51	int beforec;
	52	char **before;
	53	int afterc;
	54	char **after;
	55	char *service;
32cfe906	56	};
32cfe906	57
03c05291	58	void next_incremental(void);
fc053494	59	char copy_argv(char argv, int argc);
03c05291	60	void free_argv(char **argv, int argc);
03c05291	61	int table_num(char *table);
32cfe906	62
03c05291	63	void incremental_init(void)
32cfe906	64	{
5eaef520	65	int i;
32cfe906	66
5eaef520	67	if (!incremental_sq)
	68	incremental_sq = sq_create();
	69	if (!incremental_exec)
	70	incremental_exec = sq_create();
03c05291	71
5eaef520	72	for (i = 0; i < MAXARGC; i++)
5eaef520	73	{
e688520a	74	before[i] = xmalloc(MAX_FIELD_WIDTH);
e688520a	75	after[i] = xmalloc(MAX_FIELD_WIDTH);
03c05291	76	}
32cfe906	77	}
	78
	79
03c05291	80	/* record the state of a table row before it is changed */
03c05291	81
5eaef520	82	void incremental_before(enum tables table, char qual, char *argv)
32cfe906	83	{
5eaef520	84	EXEC SQL BEGIN DECLARE SECTION;
	85	int id;
	86	EXEC SQL END DECLARE SECTION;
	87
88acd4d3	88	char name, name2;
5eaef520	89
	90	beforetable = table;
	91
	92	switch (table)
	93	{
	94	case USERS_TABLE:
d6759517	95	sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, "
d6759517	96	"u.winconsoleshell, u.last, u.first, u.middle, u.status, "
88acd4d3	97	"u.clearid, u.type, u.users_id FROM users u WHERE %s", qual);
5eaef520	98	dosql(before);
88acd4d3	99	beforec = 11;
5eaef520	100	break;
5eaef520	101	case MACHINE_TABLE:
88acd4d3	102	sprintf(stmt_buf, "SELECT m.name, m.vendor, m.mach_id FROM machine m "
5eaef520	103	"WHERE %s", qual);
5eaef520	104	dosql(before);
88acd4d3	105	beforec = 3;
5eaef520	106	break;
e688520a	107	case CLUSTERS_TABLE:
88acd4d3	108	sprintf(stmt_buf, "SELECT c.name, c.description, c.location, "
88acd4d3	109	"c.clu_id FROM clusters c WHERE %s", qual);
5eaef520	110	dosql(before);
88acd4d3	111	beforec = 4;
5eaef520	112	break;
bb5c9457	113	case CONTAINERS_TABLE:
	114	sprintf(stmt_buf, "SELECT c.name, c.description, c.location, c.contact, "
	115	"c.acl_type, c.acl_id, c.cnt_id FROM containers c WHERE %s",
	116	qual);
	117	dosql(before);
	118	beforec = 7;
	119	break;
5eaef520	120	case MCMAP_TABLE:
	121	strcpy(before[0], argv[0]);
	122	strcpy(before[1], argv[1]);
	123	beforec = 2;
	124	break;
	125	case SVC_TABLE:
	126	strcpy(before[0], argv[0]);
	127	strcpy(before[1], argv[1]);
	128	strcpy(before[2], argv[2]);
	129	beforec = 3;
	130	break;
	131	case FILESYS_TABLE:
	132	sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, "
	133	"fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, "
88acd4d3	134	"fs.createflg, fs.lockertype, fs.filsys_id FROM filesys fs "
88acd4d3	135	"WHERE %s", qual);
5eaef520	136	dosql(before);
88acd4d3	137	name = xmalloc(0);
5eaef520	138	id = atoi(before[2]);
	139	id_to_name(id, MACHINE_TABLE, &name);
	140	strcpy(before[2], name);
	141	id = atoi(before[7]);
	142	id_to_name(id, USERS_TABLE, &name);
	143	strcpy(before[7], name);
	144	id = atoi(before[8]);
	145	id_to_name(id, LIST_TABLE, &name);
	146	strcpy(before[8], name);
	147	free(name);
88acd4d3	148	beforec = 12;
5eaef520	149	break;
	150	case QUOTA_TABLE:
	151	strcpy(before[0], "?");
	152	strcpy(before[1], argv[1]);
	153	strcpy(before[2], "?");
	154	sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs "
	155	"WHERE %s AND fs.filsys_id = q.filsys_id", qual);
	156	dosql(&(before[3]));
	157	strcpy(before[2], argv[1]);
	158	beforec = 5;
	159	break;
	160	case LIST_TABLE:
	161	sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, "
	162	"l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, "
88acd4d3	163	"l.description, l.list_id FROM list l WHERE %s", qual);
5eaef520	164	dosql(before);
88acd4d3	165	beforec = 11;
5eaef520	166	break;
	167	case IMEMBERS_TABLE:
	168	id = (int) argv[0];
	169	sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, "
	170	"grouplist, gid FROM list WHERE list_id = %d", id);
	171	dosql(&(before[3]));
88acd4d3	172	name = xmalloc(0);
5eaef520	173	id_to_name(id, LIST_TABLE, &name);
88acd4d3	174	name2 = xmalloc(0);
5eaef520	175	strcpy(before[0], name);
	176	strcpy(before[1], argv[1]);
	177	id = (int) argv[2];
88acd4d3	178	beforec = 10;
5eaef520	179	if (!strcmp(before[1], "USER"))
5eaef520	180	{
88acd4d3	181	id_to_name(id, USERS_TABLE, &name2);
	182	EXEC SQL SELECT status, users_id INTO :before[9], :before[11]
	183	FROM users WHERE users_id = :id;
	184	EXEC SQL SELECT list_id INTO :before[10] FROM list
	185	WHERE name = :name;
	186	beforec = 12;
5eaef520	187	}
5eaef520	188	else if (!strcmp(before[1], "LIST"))
88acd4d3	189	{
	190	id_to_name(id, LIST_TABLE, &name2);
	191	EXEC SQL SELECT list_id INTO :before[9] FROM list
	192	WHERE name = :name;
	193	sprintf(before[10], "%d", id);
	194	beforec = 11;
	195	}
5eaef520	196	else if (!strcmp(before[1], "STRING") \|\| !strcmp(before[1], "KERBEROS"))
88acd4d3	197	{
	198	id_to_name(id, STRINGS_TABLE, &name2);
	199	EXEC SQL SELECT list_id INTO :before[9] FROM list
	200	WHERE name = :name;
	201	}
	202	strcpy(before[2], name2);
5eaef520	203	free(name);
88acd4d3	204	free(name2);
5eaef520	205	break;
5eaef520	206	default:
03c05291	207	/*
	208	com_err(whoami, 0, "requested incremental on unexpected table `%s'",
	209	table_name[table]);
	210	*/
5eaef520	211	break;
5eaef520	212	}
a313cad2	213	}
32cfe906	214
32cfe906	215
03c05291	216	void incremental_clear_before(void)
32cfe906	217	{
5eaef520	218	beforec = 0;
32cfe906	219	}
32cfe906	220
32cfe906	221
03c05291	222	/* add an element to the incremental queue for the changed row */
32cfe906	223
5eaef520	224	void incremental_after(enum tables table, char qual, char *argv)
a313cad2	225	{
88acd4d3	226	char name, name2;
5eaef520	227	EXEC SQL BEGIN DECLARE SECTION;
	228	int id;
	229	EXEC SQL END DECLARE SECTION;
	230	struct iupdate *iu;
	231
	232	switch (table)
	233	{
	234	case USERS_TABLE:
d6759517	235	sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, "
d6759517	236	"u.winconsoleshell, u.last, u.first, u.middle, u.status, "
88acd4d3	237	"u.clearid, u.type, u.users_id FROM users u WHERE %s", qual);
5eaef520	238	dosql(after);
88acd4d3	239	afterc = 11;
5eaef520	240	break;
5eaef520	241	case MACHINE_TABLE:
88acd4d3	242	sprintf(stmt_buf, "SELECT m.name, m.vendor, m.mach_id FROM machine m "
5eaef520	243	"WHERE %s", qual);
5eaef520	244	dosql(after);
88acd4d3	245	afterc = 3;
5eaef520	246	break;
e688520a	247	case CLUSTERS_TABLE:
88acd4d3	248	sprintf(stmt_buf, "SELECT c.name, c.description, c.location, "
88acd4d3	249	"c.clu_id FROM clusters c WHERE %s", qual);
5eaef520	250	dosql(after);
88acd4d3	251	afterc = 4;
5eaef520	252	break;
bb5c9457	253	case CONTAINERS_TABLE:
	254	sprintf(stmt_buf, "SELECT c.name, c.description, c.location, c.contact, "
	255	"c.acl_type, c.acl_id, c.cnt_id FROM containers c WHERE %s",
	256	qual);
	257	dosql(after);
	258	afterc = 7;
	259	break;
5eaef520	260	case MCMAP_TABLE:
	261	strcpy(after[0], argv[0]);
	262	strcpy(after[1], argv[1]);
	263	afterc = 2;
	264	break;
	265	case SVC_TABLE:
	266	strcpy(after[0], argv[0]);
	267	strcpy(after[1], argv[1]);
	268	strcpy(after[2], argv[2]);
	269	afterc = 3;
	270	break;
	271	case FILESYS_TABLE:
	272	sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, "
	273	"fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, "
88acd4d3	274	"fs.createflg, fs.lockertype, fs.filsys_id FROM filesys fs "
88acd4d3	275	"WHERE %s", qual);
5eaef520	276	dosql(after);
88acd4d3	277	name = xmalloc(0);
5eaef520	278	id = atoi(after[2]);
	279	id_to_name(id, MACHINE_TABLE, &name);
	280	strcpy(after[2], name);
	281	id = atoi(after[7]);
	282	id_to_name(id, USERS_TABLE, &name);
	283	strcpy(after[7], name);
	284	id = atoi(after[8]);
	285	id_to_name(id, LIST_TABLE, &name);
	286	strcpy(after[8], name);
	287	free(name);
88acd4d3	288	afterc = 12;
5eaef520	289	break;
	290	case QUOTA_TABLE:
	291	strcpy(after[0], "?");
	292	strcpy(after[1], argv[1]);
	293	strcpy(after[2], "?");
	294	sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs "
	295	"WHERE %s and fs.filsys_id = q.filsys_id and q.type = '%s'",
	296	qual, argv[1]);
	297	dosql(&(after[3]));
	298	afterc = 5;
	299	break;
	300	case LIST_TABLE:
	301	sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, "
	302	"l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, "
88acd4d3	303	"l.description, l.list_id FROM list l WHERE %s", qual);
5eaef520	304	dosql(after);
88acd4d3	305	afterc = 11;
5eaef520	306	break;
	307	case IMEMBERS_TABLE:
	308	id = (int) argv[0];
	309	sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, "
	310	"grouplist, gid FROM list WHERE list_id = %d", id);
	311	dosql(&(after[3]));
88acd4d3	312	name = xmalloc(0);
5eaef520	313	id_to_name(id, LIST_TABLE, &name);
88acd4d3	314	name2 = xmalloc(0);
5eaef520	315	strcpy(after[0], name);
	316	strcpy(after[1], argv[1]);
	317	id = (int) argv[2];
88acd4d3	318	afterc = 10;
5eaef520	319	if (!strcmp(after[1], "USER"))
5eaef520	320	{
88acd4d3	321	id_to_name(id, USERS_TABLE, &name2);
	322	EXEC SQL SELECT status, users_id INTO :after[9], :after[11]
	323	FROM users WHERE users_id = :id;
	324	EXEC SQL SELECT list_id INTO :after[10] FROM list
	325	WHERE name = :name;
	326	afterc = 12;
32cfe906	327	}
5eaef520	328	else if (!strcmp(after[1], "LIST"))
88acd4d3	329	{
	330	id_to_name(id, LIST_TABLE, &name2);
	331	EXEC SQL SELECT list_id INTO :after[9] FROM list
	332	WHERE name = :name;
	333	sprintf(after[10], "%d", id);
	334	afterc = 11;
	335	}
5eaef520	336	else if (!strcmp(after[1], "STRING") \|\| !strcmp(after[1], "KERBEROS"))
88acd4d3	337	{
	338	id_to_name(id, STRINGS_TABLE, &name2);
	339	EXEC SQL SELECT list_id INTO :after[9] FROM list
	340	WHERE name = :name;
	341	}
	342	strcpy(after[2], name2);
5eaef520	343	free(name);
88acd4d3	344	free(name2);
5eaef520	345	break;
	346	case NO_TABLE:
	347	afterc = 0;
	348	table = beforetable;
	349	break;
	350	default:
03c05291	351	/*
	352	com_err(whoami, 0, "requested incremental on unexpected table `%s'",
	353	table_name[table]);
	354	*/
5eaef520	355	break;
32cfe906	356	}
5eaef520	357
e688520a	358	iu = xmalloc(sizeof(struct iupdate));
5eaef520	359	iu->table = table_name[table];
5eaef520	360	iu->beforec = beforec;
fc053494	361	iu->before = copy_argv(before, beforec);
5eaef520	362	iu->afterc = afterc;
fc053494	363	iu->after = copy_argv(after, afterc);
5eaef520	364	sq_save_data(incremental_sq, iu);
a313cad2	365	}
32cfe906	366
03c05291	367	void incremental_clear_after(void)
03c05291	368	{
5eaef520	369	incremental_after(NO_TABLE, NULL, NULL);
03c05291	370	}
03c05291	371
32cfe906	372
	373	/* Called when the current transaction is committed to start any queued
	374	* incremental updates. This caches the update table the first time it
	375	* is called.
	376	*/
	377
	378	struct inc_cache {
5eaef520	379	struct inc_cache *next;
5eaef520	380	char table, service;
32cfe906	381	};
	382
	383
03c05291	384	void incremental_update(void)
32cfe906	385	{
5eaef520	386	static int inited = 0;
	387	static struct inc_cache *cache;
	388	struct inc_cache *c;
	389	EXEC SQL BEGIN DECLARE SECTION;
e688520a	390	char tab[INCREMENTAL_TABLE_NAME_SIZE], serv[INCREMENTAL_SERVICE_SIZE];
5eaef520	391	EXEC SQL END DECLARE SECTION;
772c26b3	392	struct iupdate iu, iu_save;
5eaef520	393
	394	if (!inited)
	395	{
	396	inited++;
	397
	398	EXEC SQL DECLARE inc CURSOR FOR SELECT table_name, service
	399	FROM incremental;
	400	EXEC SQL OPEN inc;
	401	while (1)
	402	{
	403	EXEC SQL FETCH inc INTO :tab, :serv;
	404	if (sqlca.sqlcode)
	405	break;
e688520a	406	c = xmalloc(sizeof(struct inc_cache));
5eaef520	407	c->next = cache;
e688520a	408	c->table = xstrdup(strtrim(tab));
e688520a	409	c->service = xstrdup(strtrim(serv));
5eaef520	410	cache = c;
32cfe906	411	}
5eaef520	412	EXEC SQL CLOSE inc;
5eaef520	413	EXEC SQL COMMIT WORK;
32cfe906	414	}
32cfe906	415
5eaef520	416	while (sq_remove_data(incremental_sq, &iu))
	417	{
	418	for (c = cache; c; c = c->next)
	419	{
	420	if (!strcmp(c->table, iu->table))
	421	{
	422	iu->service = c->service;
772c26b3	423	iu_save = xmalloc(sizeof(struct iupdate));
	424	iu_save->service = iu->service;
	425	iu_save->table = iu->table;
	426	iu_save->beforec = iu->beforec;
	427	iu_save->afterc = iu->afterc;
	428	iu_save->before = copy_argv(iu->before, iu->beforec);
	429	iu_save->after = copy_argv(iu->after, iu->afterc);
	430	sq_save_data(incremental_exec, iu_save);
32cfe906	431	}
32cfe906	432	}
e688520a	433	if (!c)
	434	{
	435	free_argv(iu->before, iu->beforec);
	436	free_argv(iu->after, iu->afterc);
	437	free(iu);
	438	}
32cfe906	439	}
5eaef520	440	if (inc_running == 0)
5eaef520	441	next_incremental();
32cfe906	442	}
32cfe906	443
f18a32ee	444	/* Pro*C 2.2.4 can't cope with the sigset_t below, at least in Solaris 2.6.
	445	We add DEFINE=_PROC_ to the proc invocation and then #ifndef that around
	446	this function so proc will pass it through without reading it. */
32cfe906	447
f18a32ee	448	#ifndef _PROC_
03c05291	449	void next_incremental(void)
32cfe906	450	{
5eaef520	451	struct iupdate *iu;
e688520a	452	char argv[MAXARGC 2 + 4], cafter[3], cbefore[3], prog[MAXPATHLEN];
5eaef520	453	int i;
	454	sigset_t sigs;
	455
	456	if (!incremental_exec)
	457	incremental_init();
	458
	459	if (sq_empty(incremental_exec) \|\|
	460	(inc_running && now - inc_started < INC_TIMEOUT))
	461	return;
	462
	463	if (inc_running)
	464	com_err(whoami, 0, "incremental timeout on pid %d", inc_pid);
	465
	466	sq_remove_data(incremental_exec, &iu);
	467	argv[1] = iu->table;
	468	sprintf(cbefore, "%d", iu->beforec);
	469	argv[2] = cbefore;
	470	sprintf(cafter, "%d", iu->afterc);
	471	argv[3] = cafter;
	472	for (i = 0; i < iu->beforec; i++)
	473	argv[4 + i] = iu->before[i];
	474	for (i = 0; i < iu->afterc; i++)
	475	argv[4 + iu->beforec + i] = iu->after[i];
	476
	477	sprintf(prog, "%s/%s.incr", BIN_DIR, iu->service);
	478	argv[0] = prog;
	479	argv[4 + iu->beforec + iu->afterc] = 0;
	480
	481	sigemptyset(&sigs);
	482	sigaddset(&sigs, SIGCHLD);
	483	sigprocmask(SIG_BLOCK, &sigs, NULL);
	484	inc_pid = vfork();
	485	switch (inc_pid)
	486	{
32cfe906	487	case 0:
5eaef520	488	execv(prog, argv);
5eaef520	489	_exit(1);
32cfe906	490	case -1:
5eaef520	491	com_err(whoami, 0, "Failed to start incremental update");
5eaef520	492	break;
32cfe906	493	default:
5eaef520	494	inc_running = 1;
5eaef520	495	inc_started = now;
32cfe906	496	}
5eaef520	497	sigprocmask(SIG_UNBLOCK, &sigs, NULL);
32cfe906	498
5eaef520	499	free_argv(iu->before, iu->beforec);
	500	free_argv(iu->after, iu->afterc);
	501	free(iu);
32cfe906	502	}
f18a32ee	503	#endif
32cfe906	504
	505	/* Called when the current transaction is aborted to throw away any queued
	506	* incremental updates
	507	*/
	508
03c05291	509	void incremental_flush(void)
32cfe906	510	{
5eaef520	511	struct iupdate *iu;
32cfe906	512
5eaef520	513	while (sq_get_data(incremental_sq, &iu))
	514	{
	515	free_argv(iu->before, iu->beforec);
	516	free_argv(iu->after, iu->afterc);
	517	free(iu);
32cfe906	518	}
5eaef520	519	sq_destroy(incremental_sq);
5eaef520	520	incremental_sq = sq_create();
32cfe906	521	}
	522
	523
fc053494	524	char copy_argv(char argv, int argc)
	525	{
	526	char *ret = xmalloc(sizeof(char ) * argc);
	527	while (--argc >= 0)
	528	ret[argc] = xstrdup(strtrim(argv[argc]));
	529	return ret;
	530	}
	531
5eaef520	532	void free_argv(char **argv, int argc)
32cfe906	533	{
5eaef520	534	while (--argc >= 0)
	535	free(argv[argc]);
	536	free(argv);
32cfe906	537	}
03c05291	538
	539	int table_num(char *name)
	540	{
	541	int i;
	542
5eaef520	543	for (i = num_tables - 1; i; i--)
	544	{
	545	if (!strcmp(table_name[i], name))
	546	break;
	547	}
03c05291	548
	549	return i; /* 0 = "none" if no match */
	550	}