[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;

  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 FROM users u WHERE %s", qual);
      dosql(before);
      beforec = 10;
      break;
    case MACHINE_TABLE:
      sprintf(stmt_buf, "SELECT m.name, m.vendor FROM machine m "
	      "WHERE %s", qual);
      dosql(before);
      beforec = 2;
      break;
    case CLUSTERS_TABLE:
      sprintf(stmt_buf, "SELECT c.name, c.description, c.location "
	      "FROM clusters c WHERE %s", qual);
      dosql(before);
      beforec = 3;
      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 FROM filesys fs WHERE %s", qual);
      dosql(before);
      name = malloc(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 = 11;
      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 FROM list l WHERE %s", qual);
      dosql(before);
      beforec = 10;
      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 = malloc(0);
      id_to_name(id, LIST_TABLE, &name);
      strcpy(before[0], name);
      strcpy(before[1], argv[1]);
      id = (int) argv[2];
      beforec = 9;
      if (!strcmp(before[1], "USER"))
	{
	  id_to_name(id, USERS_TABLE, &name);
	  EXEC SQL SELECT status INTO :before[9] FROM users
	    WHERE users_id = :id;
	  beforec = 10;
      }
      else if (!strcmp(before[1], "LIST"))
	id_to_name(id, LIST_TABLE, &name);
      else if (!strcmp(before[1], "STRING") || !strcmp(before[1], "KERBEROS"))
	id_to_name(id, STRINGS_TABLE, &name);
      strcpy(before[2], name);
      free(name);
      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;
  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 FROM users u WHERE %s", qual);
      dosql(after);
      afterc = 10;
      break;
    case MACHINE_TABLE:
      sprintf(stmt_buf, "SELECT m.name, m.vendor FROM machine m "
	      "WHERE %s", qual);
      dosql(after);
      afterc = 2;
      break;
    case CLUSTERS_TABLE:
      sprintf(stmt_buf, "SELECT c.name, c.description, c.location "
	      "FROM clusters c WHERE %s", qual);
      dosql(after);
      afterc = 3;
      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 FROM filesys fs WHERE %s", qual);
      dosql(after);
      name = malloc(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 = 11;
      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 FROM list l WHERE %s", qual);
      dosql(after);
      afterc = 10;
      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 = malloc(0);
      id_to_name(id, LIST_TABLE, &name);
      strcpy(after[0], name);
      strcpy(after[1], argv[1]);
      id = (int) argv[2];
      afterc = 9;
      if (!strcmp(after[1], "USER"))
	{
	  id_to_name(id, USERS_TABLE, &name);
	  EXEC SQL SELECT status INTO :after[9] FROM users
	    WHERE users_id = :id;
	  afterc = 10;
	}
      else if (!strcmp(after[1], "LIST"))
	id_to_name(id, LIST_TABLE, &name);
      else if (!strcmp(after[1], "STRING") || !strcmp(after[1], "KERBEROS"))
	id_to_name(id, STRINGS_TABLE, &name);
      strcpy(after[2], name);
      free(name);
      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
	88	char *name;
	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, "
	96	"u.winconsoleshell, u.last, u.first, u.middle, u.status, "
	97	"u.clearid, u.type FROM users u WHERE %s", qual);
5eaef520	98	dosql(before);
d6759517	99	beforec = 10;
5eaef520	100	break;
	101	case MACHINE_TABLE:
	102	sprintf(stmt_buf, "SELECT m.name, m.vendor FROM machine m "
	103	"WHERE %s", qual);
	104	dosql(before);
	105	beforec = 2;
	106	break;
e688520a	107	case CLUSTERS_TABLE:
5eaef520	108	sprintf(stmt_buf, "SELECT c.name, c.description, c.location "
	109	"FROM clusters c WHERE %s", qual);
	110	dosql(before);
	111	beforec = 3;
	112	break;
	113	case MCMAP_TABLE:
	114	strcpy(before[0], argv[0]);
	115	strcpy(before[1], argv[1]);
	116	beforec = 2;
	117	break;
	118	case SVC_TABLE:
	119	strcpy(before[0], argv[0]);
	120	strcpy(before[1], argv[1]);
	121	strcpy(before[2], argv[2]);
	122	beforec = 3;
	123	break;
	124	case FILESYS_TABLE:
	125	sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, "
	126	"fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, "
	127	"fs.createflg, fs.lockertype FROM filesys fs WHERE %s", qual);
	128	dosql(before);
	129	name = malloc(0);
	130	id = atoi(before[2]);
	131	id_to_name(id, MACHINE_TABLE, &name);
	132	strcpy(before[2], name);
	133	id = atoi(before[7]);
	134	id_to_name(id, USERS_TABLE, &name);
	135	strcpy(before[7], name);
	136	id = atoi(before[8]);
	137	id_to_name(id, LIST_TABLE, &name);
	138	strcpy(before[8], name);
	139	free(name);
	140	beforec = 11;
	141	break;
	142	case QUOTA_TABLE:
	143	strcpy(before[0], "?");
	144	strcpy(before[1], argv[1]);
	145	strcpy(before[2], "?");
	146	sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs "
	147	"WHERE %s AND fs.filsys_id = q.filsys_id", qual);
	148	dosql(&(before[3]));
	149	strcpy(before[2], argv[1]);
	150	beforec = 5;
	151	break;
	152	case LIST_TABLE:
	153	sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, "
	154	"l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, "
	155	"l.description FROM list l WHERE %s", qual);
	156	dosql(before);
	157	beforec = 10;
	158	break;
	159	case IMEMBERS_TABLE:
	160	id = (int) argv[0];
	161	sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, "
	162	"grouplist, gid FROM list WHERE list_id = %d", id);
	163	dosql(&(before[3]));
	164	name = malloc(0);
	165	id_to_name(id, LIST_TABLE, &name);
	166	strcpy(before[0], name);
	167	strcpy(before[1], argv[1]);
	168	id = (int) argv[2];
	169	beforec = 9;
	170	if (!strcmp(before[1], "USER"))
	171	{
172	id_to_name(id, USERS_TABLE, &name);
173	EXEC SQL SELECT status INTO :before[9] FROM users
174	WHERE users_id = :id;
175	beforec = 10;
176	}
177	else if (!strcmp(before[1], "LIST"))
03c05291	178	id_to_name(id, LIST_TABLE, &name);
5eaef520	179	else if (!strcmp(before[1], "STRING") \|\| !strcmp(before[1], "KERBEROS"))
	180	id_to_name(id, STRINGS_TABLE, &name);
	181	strcpy(before[2], name);
	182	free(name);
	183	break;
	184	default:
03c05291	185	/*
	186	com_err(whoami, 0, "requested incremental on unexpected table `%s'",
	187	table_name[table]);
	188	*/
5eaef520	189	break;
5eaef520	190	}
a313cad2	191	}
32cfe906	192
32cfe906	193
03c05291	194	void incremental_clear_before(void)
32cfe906	195	{
5eaef520	196	beforec = 0;
32cfe906	197	}
32cfe906	198
32cfe906	199
03c05291	200	/* add an element to the incremental queue for the changed row */
32cfe906	201
5eaef520	202	void incremental_after(enum tables table, char qual, char *argv)
a313cad2	203	{
5eaef520	204	char *name;
	205	EXEC SQL BEGIN DECLARE SECTION;
	206	int id;
	207	EXEC SQL END DECLARE SECTION;
	208	struct iupdate *iu;
	209
	210	switch (table)
	211	{
	212	case USERS_TABLE:
d6759517	213	sprintf(stmt_buf, "SELECT u.login, u.unix_uid, u.shell, "
	214	"u.winconsoleshell, u.last, u.first, u.middle, u.status, "
	215	"u.clearid, u.type FROM users u WHERE %s", qual);
5eaef520	216	dosql(after);
d6759517	217	afterc = 10;
5eaef520	218	break;
	219	case MACHINE_TABLE:
	220	sprintf(stmt_buf, "SELECT m.name, m.vendor FROM machine m "
	221	"WHERE %s", qual);
	222	dosql(after);
	223	afterc = 2;
	224	break;
e688520a	225	case CLUSTERS_TABLE:
5eaef520	226	sprintf(stmt_buf, "SELECT c.name, c.description, c.location "
	227	"FROM clusters c WHERE %s", qual);
	228	dosql(after);
	229	afterc = 3;
	230	break;
	231	case MCMAP_TABLE:
	232	strcpy(after[0], argv[0]);
	233	strcpy(after[1], argv[1]);
	234	afterc = 2;
	235	break;
	236	case SVC_TABLE:
	237	strcpy(after[0], argv[0]);
	238	strcpy(after[1], argv[1]);
	239	strcpy(after[2], argv[2]);
	240	afterc = 3;
	241	break;
	242	case FILESYS_TABLE:
	243	sprintf(stmt_buf, "SELECT fs.label, fs.type, fs.mach_id, fs.name, "
	244	"fs.mount, fs.rwaccess, fs.comments, fs.owner, fs.owners, "
	245	"fs.createflg, fs.lockertype FROM filesys fs WHERE %s", qual);
	246	dosql(after);
	247	name = malloc(0);
	248	id = atoi(after[2]);
	249	id_to_name(id, MACHINE_TABLE, &name);
	250	strcpy(after[2], name);
	251	id = atoi(after[7]);
	252	id_to_name(id, USERS_TABLE, &name);
	253	strcpy(after[7], name);
	254	id = atoi(after[8]);
	255	id_to_name(id, LIST_TABLE, &name);
	256	strcpy(after[8], name);
	257	free(name);
	258	afterc = 11;
	259	break;
	260	case QUOTA_TABLE:
	261	strcpy(after[0], "?");
	262	strcpy(after[1], argv[1]);
	263	strcpy(after[2], "?");
	264	sprintf(stmt_buf, "SELECT q.quota, fs.name FROM quota q, filesys fs "
	265	"WHERE %s and fs.filsys_id = q.filsys_id and q.type = '%s'",
	266	qual, argv[1]);
	267	dosql(&(after[3]));
	268	afterc = 5;
	269	break;
	270	case LIST_TABLE:
	271	sprintf(stmt_buf, "SELECT l.name, l.active, l.publicflg, l.hidden, "
	272	"l.maillist, l.grouplist, l.gid, l.acl_type, l.acl_id, "
	273	"l.description FROM list l WHERE %s", qual);
	274	dosql(after);
	275	afterc = 10;
	276	break;
	277	case IMEMBERS_TABLE:
	278	id = (int) argv[0];
	279	sprintf(stmt_buf, "SELECT active, publicflg, hidden, maillist, "
	280	"grouplist, gid FROM list WHERE list_id = %d", id);
	281	dosql(&(after[3]));
	282	name = malloc(0);
	283	id_to_name(id, LIST_TABLE, &name);
	284	strcpy(after[0], name);
	285	strcpy(after[1], argv[1]);
	286	id = (int) argv[2];
	287	afterc = 9;
	288	if (!strcmp(after[1], "USER"))
	289	{
290	id_to_name(id, USERS_TABLE, &name);
291	EXEC SQL SELECT status INTO :after[9] FROM users
292	WHERE users_id = :id;
293	afterc = 10;
32cfe906	294	}
5eaef520	295	else if (!strcmp(after[1], "LIST"))
	296	id_to_name(id, LIST_TABLE, &name);
	297	else if (!strcmp(after[1], "STRING") \|\| !strcmp(after[1], "KERBEROS"))
	298	id_to_name(id, STRINGS_TABLE, &name);
	299	strcpy(after[2], name);
	300	free(name);
	301	break;
	302	case NO_TABLE:
	303	afterc = 0;
	304	table = beforetable;
	305	break;
	306	default:
03c05291	307	/*
	308	com_err(whoami, 0, "requested incremental on unexpected table `%s'",
	309	table_name[table]);
	310	*/
5eaef520	311	break;
32cfe906	312	}
5eaef520	313
e688520a	314	iu = xmalloc(sizeof(struct iupdate));
5eaef520	315	iu->table = table_name[table];
5eaef520	316	iu->beforec = beforec;
fc053494	317	iu->before = copy_argv(before, beforec);
5eaef520	318	iu->afterc = afterc;
fc053494	319	iu->after = copy_argv(after, afterc);
5eaef520	320	sq_save_data(incremental_sq, iu);
a313cad2	321	}
32cfe906	322
03c05291	323	void incremental_clear_after(void)
03c05291	324	{
5eaef520	325	incremental_after(NO_TABLE, NULL, NULL);
03c05291	326	}
03c05291	327
32cfe906	328
	329	/* Called when the current transaction is committed to start any queued
	330	* incremental updates. This caches the update table the first time it
	331	* is called.
	332	*/
	333
	334	struct inc_cache {
5eaef520	335	struct inc_cache *next;
5eaef520	336	char table, service;
32cfe906	337	};
	338
	339
03c05291	340	void incremental_update(void)
32cfe906	341	{
5eaef520	342	static int inited = 0;
	343	static struct inc_cache *cache;
	344	struct inc_cache *c;
	345	EXEC SQL BEGIN DECLARE SECTION;
e688520a	346	char tab[INCREMENTAL_TABLE_NAME_SIZE], serv[INCREMENTAL_SERVICE_SIZE];
5eaef520	347	EXEC SQL END DECLARE SECTION;
772c26b3	348	struct iupdate iu, iu_save;
5eaef520	349
	350	if (!inited)
	351	{
	352	inited++;
	353
	354	EXEC SQL DECLARE inc CURSOR FOR SELECT table_name, service
	355	FROM incremental;
	356	EXEC SQL OPEN inc;
	357	while (1)
	358	{
	359	EXEC SQL FETCH inc INTO :tab, :serv;
	360	if (sqlca.sqlcode)
	361	break;
e688520a	362	c = xmalloc(sizeof(struct inc_cache));
5eaef520	363	c->next = cache;
e688520a	364	c->table = xstrdup(strtrim(tab));
e688520a	365	c->service = xstrdup(strtrim(serv));
5eaef520	366	cache = c;
32cfe906	367	}
5eaef520	368	EXEC SQL CLOSE inc;
5eaef520	369	EXEC SQL COMMIT WORK;
32cfe906	370	}
32cfe906	371
5eaef520	372	while (sq_remove_data(incremental_sq, &iu))
	373	{
	374	for (c = cache; c; c = c->next)
	375	{
	376	if (!strcmp(c->table, iu->table))
	377	{
	378	iu->service = c->service;
772c26b3	379	iu_save = xmalloc(sizeof(struct iupdate));
	380	iu_save->service = iu->service;
	381	iu_save->table = iu->table;
	382	iu_save->beforec = iu->beforec;
	383	iu_save->afterc = iu->afterc;
	384	iu_save->before = copy_argv(iu->before, iu->beforec);
	385	iu_save->after = copy_argv(iu->after, iu->afterc);
	386	sq_save_data(incremental_exec, iu_save);
32cfe906	387	}
32cfe906	388	}
e688520a	389	if (!c)
	390	{
	391	free_argv(iu->before, iu->beforec);
	392	free_argv(iu->after, iu->afterc);
	393	free(iu);
	394	}
32cfe906	395	}
5eaef520	396	if (inc_running == 0)
5eaef520	397	next_incremental();
32cfe906	398	}
32cfe906	399
f18a32ee	400	/* Pro*C 2.2.4 can't cope with the sigset_t below, at least in Solaris 2.6.
	401	We add DEFINE=_PROC_ to the proc invocation and then #ifndef that around
	402	this function so proc will pass it through without reading it. */
32cfe906	403
f18a32ee	404	#ifndef _PROC_
03c05291	405	void next_incremental(void)
32cfe906	406	{
5eaef520	407	struct iupdate *iu;
e688520a	408	char argv[MAXARGC 2 + 4], cafter[3], cbefore[3], prog[MAXPATHLEN];
5eaef520	409	int i;
	410	sigset_t sigs;
	411
	412	if (!incremental_exec)
	413	incremental_init();
	414
	415	if (sq_empty(incremental_exec) \|\|
	416	(inc_running && now - inc_started < INC_TIMEOUT))
	417	return;
	418
	419	if (inc_running)
	420	com_err(whoami, 0, "incremental timeout on pid %d", inc_pid);
	421
	422	sq_remove_data(incremental_exec, &iu);
	423	argv[1] = iu->table;
	424	sprintf(cbefore, "%d", iu->beforec);
	425	argv[2] = cbefore;
	426	sprintf(cafter, "%d", iu->afterc);
	427	argv[3] = cafter;
	428	for (i = 0; i < iu->beforec; i++)
	429	argv[4 + i] = iu->before[i];
	430	for (i = 0; i < iu->afterc; i++)
	431	argv[4 + iu->beforec + i] = iu->after[i];
	432
	433	sprintf(prog, "%s/%s.incr", BIN_DIR, iu->service);
	434	argv[0] = prog;
	435	argv[4 + iu->beforec + iu->afterc] = 0;
	436
	437	sigemptyset(&sigs);
	438	sigaddset(&sigs, SIGCHLD);
	439	sigprocmask(SIG_BLOCK, &sigs, NULL);
	440	inc_pid = vfork();
	441	switch (inc_pid)
	442	{
32cfe906	443	case 0:
5eaef520	444	execv(prog, argv);
5eaef520	445	_exit(1);
32cfe906	446	case -1:
5eaef520	447	com_err(whoami, 0, "Failed to start incremental update");
5eaef520	448	break;
32cfe906	449	default:
5eaef520	450	inc_running = 1;
5eaef520	451	inc_started = now;
32cfe906	452	}
5eaef520	453	sigprocmask(SIG_UNBLOCK, &sigs, NULL);
32cfe906	454
5eaef520	455	free_argv(iu->before, iu->beforec);
	456	free_argv(iu->after, iu->afterc);
	457	free(iu);
32cfe906	458	}
f18a32ee	459	#endif
32cfe906	460
	461	/* Called when the current transaction is aborted to throw away any queued
	462	* incremental updates
	463	*/
	464
03c05291	465	void incremental_flush(void)
32cfe906	466	{
5eaef520	467	struct iupdate *iu;
32cfe906	468
5eaef520	469	while (sq_get_data(incremental_sq, &iu))
	470	{
	471	free_argv(iu->before, iu->beforec);
	472	free_argv(iu->after, iu->afterc);
	473	free(iu);
32cfe906	474	}
5eaef520	475	sq_destroy(incremental_sq);
5eaef520	476	incremental_sq = sq_create();
32cfe906	477	}
	478
	479
fc053494	480	char copy_argv(char argv, int argc)
	481	{
	482	char *ret = xmalloc(sizeof(char ) * argc);
	483	while (--argc >= 0)
	484	ret[argc] = xstrdup(strtrim(argv[argc]));
	485	return ret;
	486	}
	487
5eaef520	488	void free_argv(char **argv, int argc)
32cfe906	489	{
5eaef520	490	while (--argc >= 0)
	491	free(argv[argc]);
	492	free(argv);
32cfe906	493	}
03c05291	494
	495	int table_num(char *name)
	496	{
	497	int i;
	498
5eaef520	499	for (i = num_tables - 1; i; i--)
	500	{
	501	if (!strcmp(table_name[i], name))
	502	break;
	503	}
03c05291	504
	505	return i; /* 0 = "none" if no match */
	506	}