[moira.git] / server / increment.dc

/*
 *	$Source$
 *	$Author$
 *	$Header$
 *
 *	Copyright (C) 1989 by the Massachusetts Institute of Technology
 *	For copying and distribution information, please see the file
 *	<mit-copyright.h>.
 * 
 */

#ifndef lint
static char *rcsid_increment_dc = "$Header$";
#endif lint

#include <mit-copyright.h>
#include <moira.h>
#include "query.h"
#include "mr_server.h"
EXEC SQL INCLUDE sqlca

extern char *whoami;
char *malloc();

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

#define MAXARGC 15

/* structures to save before args */
static char beforeb[MAXARGC][ARGLEN];
static char *before[MAXARGC];
EXEC SQL BEGIN DECLARE SECTION;
char *barg0, *barg1, *barg2, *barg3, *barg4;
char *barg5, *barg6, *barg7, *barg8, *barg9;
char *barg10, *barg11, *barg12, *barg13, *barg14;
EXEC SQL END DECLARE SECTION;
static int beforec;
static char *beforetable;

/* structures to save after args */
static char afterb[MAXARGC][ARGLEN];
static char *after[MAXARGC];
EXEC SQL BEGIN DECLARE SECTION;
char *aarg0, *aarg1, *aarg2, *aarg3, *aarg4;
char *aarg5, *aarg6, *aarg7, *aarg8, *aarg9;
char *aarg10, *aarg11, *aarg12, *aarg13, *aarg14;
EXEC SQL END DECLARE SECTION;
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;
};


incremental_init()
{
    int i;

    for (i = 0; i < MAXARGC; i++) {
	before[i] = &beforeb[i][0];
	after[i] = &afterb[i][0];
    }
    barg0 = before[0];
    barg1 = before[1];
    barg2 = before[2];
    barg3 = before[3];
    barg4 = before[4];
    barg5 = before[5];
    barg6 = before[6];
    barg7 = before[7];
    barg8 = before[8];
    barg9 = before[9];
    barg10 = before[10];
    barg11 = before[11];
    barg12 = before[12];
    barg13 = before[13];
    barg14 = before[14];
    aarg0 = after[0];
    aarg1 = after[1];
    aarg2 = after[2];
    aarg3 = after[3];
    aarg4 = after[4];
    aarg5 = after[5];
    aarg6 = after[6];
    aarg7 = after[7];
    aarg8 = after[8];
    aarg9 = after[9];
    aarg10 = after[10];
    aarg11 = after[11];
    aarg12 = after[12];
    aarg13 = after[13];
    aarg14 = after[14];
    if (incremental_sq == NULL)
      incremental_sq = sq_create();
    if (incremental_exec == NULL)
      incremental_exec = sq_create();
}


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

    char buffer[512], *name;

    beforetable = table;

    if (!strcmp(table, "users")) {
/*
 *	retrieve (barg0 = u.login, barg1 = text(u.uid),
 *		  barg2 = u.shell, barg3 = u.last, barg4 = u.first,
 *		  barg5 = u.middle, barg6 = text(u.status),
 *		  barg7 = u.mit_id, barg8 = u.mit_year)
 *		where qual
 */
	EXEC SQL SELECT login, uid, shell, last, first, middle, 
	    text(u.status), mit_id, mit_year
	  INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	    :barg7, :barg8
	  FROM users WHERE :qual;
	beforec = 9;
    } else if (!strcmp(table, "machine")) {
/*
 *	retrieve (barg0 = m.name, barg1 = m.type) where qual
 */
	EXEC SQL SELECT name, type INTO :barg0, :barg1 FROM machine
	  WHERE :qual;
	beforec = 2;
    } else if (!strcmp(table, "cluster")) {
/*
 *	retrieve (barg0 = c.name, barg1 = c.desc, barg2 = c.location)
 *	  	where qual
 */
	EXEC SQL SELECT name, desc, location INTO :barg0, :barg1, :barg2
	  FROM cluster WHERE :qual;
	beforec = 3;
    } else if (!strcmp(table, "mcmap")) {
	strcpy(barg0, argv[0]);
	strcpy(barg1, argv[1]);
	beforec = 2;
    } else if (!strcmp(table, "svc")) {
	strcpy(barg0, argv[0]);
	strcpy(barg1, argv[1]);
	strcpy(barg2, argv[2]);
	beforec = 3;
    } else if (!strcmp(table, "filesys")) {
/*
 *	range of fs is filesys
 *	retrieve (barg0 = fs.label, barg1 = fs.type, barg2 = text(fs.mach_id),
 *		  barg3 = fs.name, barg4 = fs.mount, barg5 = fs.access,
 *		  barg6 = fs.comments, barg7 = text(fs.owner),
 *		  barg8 = text(fs.owners), barg9 = text(fs.createflg),
 *		  barg10 = fs.lockertype)
 *	  where qual
 */
	EXEC SQL SELECT label, type, text(mach_id), name, mount, access,
	    comments, text(owner), text(owners), text(createflag), lockertype
	  INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6, 
            :barg7, :barg8, :barg9, :barg10
	  FROM filesys WHERE :qual;
	beforec = 11;
    } else if (!strcmp(table, "quota")) {
	strcpy(barg0, "?");
	strcpy(barg1, argv[1]);
	strcpy(barg2, "?");
	sprintf(buffer, "%s and fs.filsys_id = q.filsys_id", qual);
	qual = buffer;
/*
 *	range of q is quota
 *	retrieve (barg3 = text(q.quota), barg4 = filesys.name) where qual
 */
	EXEC SQL SELECT q.quota, fs.name INTO :barg3, :barg4
	  FROM quota q, filesys fs WHERE :qual;
	beforec = 5;
    } else if (!strcmp(table, "list")) {
/*
 *	retrieve (barg0 = l.name, barg1 = text(l.active),
 *		  barg2 = text(l.public), barg3 = text(l.hidden),
 *		  barg4 = text(l.maillist), barg5 = text(l.group),
 *		  barg6 = text(l.gid), barg7 = l.acl_type,
 *		  barg8 = text(l.acl_id), barg9 = l.desc)
 *	  where qual
 */
	EXEC SQL SELECT name, text(active), text(public), text(hidden),
	    text(maillist), text(grouplist), text(gid), acl_type,
	    text(acl_id), desc
	  INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	     :barg7, :barg8, :barg9
	  FROM list WHERE :qual;
	beforec = 10;
    } else if (!strcmp(table, "members")) {
	id = (int) argv[0];
/*
 *	retrieve (barg3 = text(list.group)) where list.list_id = id
 */
	EXEC SQL SELECT text(list.group) INTO :barg3 FROM list 
	  WHERE list_id = :id;
	name = malloc(0);
	id_to_name(id, "LIST", &name);
	strcpy(barg0, name);
	strcpy(barg1, argv[1]);
	id = (int) argv[2];
	if (!strcmp(barg1, "USER")) {
	    id_to_name(id, barg1, &name);
	} else if (!strcmp(barg1, "LIST")) {
	    id_to_name(id, barg1, &name);
	} else if (!strcmp(barg1, "STRING")) {
	    id_to_name(id, barg1, &name);
	} else if (!strcmp(barg1, "KERBEROS")) {
	    id_to_name(id, "STRING", &name);
	}
	strcpy(barg2, name);
	free(name);
	beforec = 4;
    } /* else
      com_err(whoami, 0, "unknown table in incremental_before"); */
}


incremental_clear_before()
{
    beforec = 0;
}

incremental_clear_after()
{
    incremental_after("clear", 0);
}


incremental_after(table, qual, argv)
EXEC SQL BEGIN DECLARE SECTION; 
char *table;
char *qual;
EXEC SQL END DECLARE SECTION; 
char **argv;
{
    char buffer[2048], *name;
EXEC SQL BEGIN DECLARE SECTION; 
    int id, i;
EXEC SQL END DECLARE SECTION; 
    struct iupdate *iu;
    char **copy_argv();

    if (!strcmp(table, "users")) {
/*
 *	retrieve (aarg0 = u.login, aarg1 = text(u.uid),
 *		  aarg2 = u.shell, aarg3 = u.last, aarg4 = u.first,
 *		  aarg5 = u.middle, aarg6 = text(u.status),
 *		  aarg7 = u.mit_id, aarg8 = u.mit_year)
 *		where qual
 */
	EXEC SQL SELECT login, uid, shell, last, first, middle,
	    text(status), mit_id, mit_year
	  INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5,
	    :aarg6, :aarg7, :aarg8
	  FROM users WHERE :qual;
	afterc = 9;
    } else if (!strcmp(table, "machine")) {
/*
 *	retrieve (aarg0 = m.name, aarg1 = m.type) where qual
 */
	EXEC SQL SELECT name, type INTO :aarg0, :aarg1
	  FROM machine WHERE :qual;
	afterc = 2;
    } else if (!strcmp(table, "cluster")) {
/*
 *	retrieve (aarg0 = c.name, aarg1 = c.desc, aarg2 = c.location)
 *	  	where qual
 */
	EXEC SQL SELECT name, desc, location INTO :aarg0, :aarg1, :aarg2
	  FROM cluster WHERE :qual;
	afterc = 3;
    } else if (!strcmp(table, "mcmap")) {
	strcpy(aarg0, argv[0]);
	strcpy(aarg1, argv[1]);
	afterc = 2;
    } else if (!strcmp(table, "svc")) {
	strcpy(aarg0, argv[0]);
	strcpy(aarg1, argv[1]);
	strcpy(aarg2, argv[2]);
	afterc = 3;
    } else if (!strcmp(table, "filesys")) {
/*
 *	range of fs is filesys
 *	retrieve (aarg0 = fs.label, aarg1 = fs.type,
 *		  aarg2 = text(fs.mach_id),
 *		  aarg3 = fs.name, aarg4 = fs.mount, aarg5 = fs.access,
 *		  aarg6 = fs.comments, aarg7 = text(fs.owner),
 *		  aarg8 = text(fs.owners), aarg9 = text(fs.createflg),
 *		  aarg10 = fs.lockertype)
 *	  where qual
 */
        EXEC SQL SELECT label, type, text(mach_id), name, mount, access,
	    comments, text(owner), text(owners), text(createflag), lockertype
          INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	      :aarg7, :aarg8, :aarg9, :aarg10
          FROM filesys fs WHERE :qual;
	afterc = 11;
    } else if (!strcmp(table, "quota")) {
	strcpy(aarg0, "?");
	strcpy(aarg1, argv[1]);
	strcpy(aarg2, "?");
	sprintf(buffer, "%s and fs.filsys_id = q.filsys_id", qual);
	qual = buffer;
/*
 *	range of q is quota
 *	retrieve (aarg3 = text(q.quota), aarg4 = filesys.name) where qual
 */
	EXEC SQL SELECT text(q.quota), fs.name INTO :aarg3, :aarg4
	  FROM quota q, filesys fs WHERE :qual;
	afterc = 5;
    } else if (!strcmp(table, "list")) {
/*
 *	retrieve (aarg0 = l.name, aarg1 = text(l.active),
 *		  aarg2 = text(l.public), aarg3 = text(l.hidden),
 *		  aarg4 = text(l.maillist), aarg5 = text(l.group),
 *		  aarg6 = text(l.gid), aarg7 = l.acl_type,
 *		  aarg8 = text(l.acl_id), aarg9 = l.desc)
 *	  where qual
 */
	EXEC SQL SELECT name, text(active), text(public), text(hidden),
	    text(maillist), text(grouplist), text(gid), acl_type,
	    text(acl_id), desc
	  INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	     :aarg7, :aarg8, :aarg9
	  FROM list WHERE :qual;
	afterc = 10;
    } else if (!strcmp(table, "members")) {
	id = (int) argv[0];
/*
 *	retrieve (aarg3 = text(list.group)) where list.list_id = id
 */
	EXEC SQL SELECT text(list.group) INTO :aarg3 FROM list
	  WHERE list_id = :id;
	name = malloc(0);
	id_to_name(id, "LIST", &name);
	strcpy(aarg0, name);
	strcpy(aarg1, argv[1]);
	id = (int) argv[2];
	if (!strcmp(aarg1, "USER")) {
	    id_to_name(id, aarg1, &name);
	} else if (!strcmp(aarg1, "LIST")) {
	    id_to_name(id, aarg1, &name);
	} else if (!strcmp(aarg1, "STRING")) {
	    id_to_name(id, aarg1, &name);
	} else if (!strcmp(aarg1, "KERBEROS")) {
	    id_to_name(id, "STRING", &name);
	}
	strcpy(aarg2, name);
	free(name);
	afterc = 4;
    } else if (!strcmp(table, "clear")) {
	afterc = 0;
	table = beforetable;
    } /* else
      com_err(whoami, 0, "unknown table in incremental_after"); */

    iu = (struct iupdate *) malloc(sizeof(struct iupdate));
    iu->table = strsave(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);

#ifdef DEBUG
    sprintf(buffer, "INCREMENTAL(%s, [", table);
    for (i = 0; i < beforec; i++) {
	if (i == 0)
	  strcat(buffer, strtrim(before[0]));
	else {
	    strcat(buffer, ", ");
	    strcat(buffer, strtrim(before[i]));
	}
    }
    strcat(buffer, "], [");
    for (i = 0; i < afterc; i++) {
	if (i == 0)
	  strcat(buffer, strtrim(after[0]));
	else {
	    strcat(buffer, ", ");
	    strcat(buffer, strtrim(after[i]));
	}
    }
    strcat(buffer, "])");
    com_err(whoami, 0, buffer);
#endif DEBUG
}


/* 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;
    char *service;
};


incremental_update()
{
    static int inited = 0;
    static struct inc_cache *cache;
    struct inc_cache *c;
    EXEC SQL BEGIN DECLARE SECTION;
    char tab[17], serv[17];
    EXEC SQL END DECLARE SECTION;
    struct iupdate *iu;

    if (!inited) {
	inited++;

	EXEC SQL DECLARE inc CURSOR FOR SELECT table, service FROM incremental;
	EXEC SQL OPEN inc;
	while (1) {
	    EXEC SQL FETCH inc INTO :tab, :serv;
	    if (sqlca.sqlcode != 0) break;
    	    c = (struct inc_cache *)malloc(sizeof(struct inc_cache));
	    c->next = cache;
	    c->table = strsave(strtrim(tab));
	    c->service = strsave(strtrim(serv));
	    cache = c;
	}
	EXEC SQL CLOSE inc;
    }

    while (sq_remove_data(incremental_sq, &iu)) {
	for (c = cache; c; c = c->next) {
	    if (!strcmp(c->table, iu->table)) {
		iu->service = c->service;
		sq_save_data(incremental_exec, iu);
	    }
	}
    }
    if (inc_running == 0)
      next_incremental();
}


next_incremental()
{
    struct iupdate *iu;
    char *argv[MAXARGC * 2 + 4], cafter[3], cbefore[3], prog[BUFSIZ];
    int i;

    if (incremental_exec == NULL)
      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);
#ifdef DEBUG
    com_err(whoami, 0, "forking %s", prog);
#endif
    argv[0] = prog;
    argv[4 + iu->beforec + iu->afterc] = 0;
    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;
    }

    free_argv(iu->before, iu->beforec);
    free_argv(iu->after, iu->afterc);
    free(iu->table);
    free(iu);

}


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

incremental_flush()
{
    struct iupdate *iu;

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


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

free_argv(argv, argc)
char **argv;
int argc;
{
    while (--argc >= 0)
      free(argv[argc]);
    free(argv);
}
Commit	Line	Data
32cfe906	1	/*
	2	* $Source$
	3	* $Author$
	4	* $Header$
	5	*
	6	* Copyright (C) 1989 by the Massachusetts Institute of Technology
	7	* For copying and distribution information, please see the file
	8	* <mit-copyright.h>.
	9	*
	10	*/
	11
	12	#ifndef lint
	13	static char *rcsid_increment_dc = "$Header$";
	14	#endif lint
	15
	16	#include <mit-copyright.h>
	17	#include <moira.h>
	18	#include "query.h"
	19	#include "mr_server.h"
	20	EXEC SQL INCLUDE sqlca
	21
	22	extern char *whoami;
	23	char *malloc();
	24
	25	int inc_pid = 0;
	26	int inc_running = 0;
	27	time_t inc_started;
	28
	29	#define MAXARGC 15
	30
	31	/* structures to save before args */
	32	static char beforeb[MAXARGC][ARGLEN];
	33	static char *before[MAXARGC];
	34	EXEC SQL BEGIN DECLARE SECTION;
	35	char barg0, barg1, barg2, barg3, *barg4;
	36	char barg5, barg6, barg7, barg8, *barg9;
	37	char barg10, barg11, barg12, barg13, *barg14;
	38	EXEC SQL END DECLARE SECTION;
	39	static int beforec;
	40	static char *beforetable;
	41
	42	/* structures to save after args */
	43	static char afterb[MAXARGC][ARGLEN];
	44	static char *after[MAXARGC];
	45	EXEC SQL BEGIN DECLARE SECTION;
	46	char aarg0, aarg1, aarg2, aarg3, *aarg4;
	47	char aarg5, aarg6, aarg7, aarg8, *aarg9;
	48	char aarg10, aarg11, aarg12, aarg13, *aarg14;
	49	EXEC SQL END DECLARE SECTION;
	50	static int afterc;
	51
	52	/* structures to save entire sets of incremental changes */
	53	struct save_queue *incremental_sq = NULL;
	54	struct save_queue *incremental_exec = NULL;
	55	struct iupdate {
	56	char *table;
	57	int beforec;
	58	char **before;
	59	int afterc;
	60	char **after;
	61	char *service;
	62	};
	63
	64
65	incremental_init()
66	{
67	int i;
68
69	for (i = 0; i < MAXARGC; i++) {
70	before[i] = &beforeb[i][0];
71	after[i] = &afterb[i][0];
72	}
73	barg0 = before[0];
74	barg1 = before[1];
75	barg2 = before[2];
76	barg3 = before[3];
77	barg4 = before[4];
78	barg5 = before[5];
79	barg6 = before[6];
80	barg7 = before[7];
81	barg8 = before[8];
82	barg9 = before[9];
83	barg10 = before[10];
84	barg11 = before[11];
85	barg12 = before[12];
86	barg13 = before[13];
87	barg14 = before[14];
88	aarg0 = after[0];
89	aarg1 = after[1];
90	aarg2 = after[2];
91	aarg3 = after[3];
92	aarg4 = after[4];
93	aarg5 = after[5];
94	aarg6 = after[6];
95	aarg7 = after[7];
96	aarg8 = after[8];
97	aarg9 = after[9];
98	aarg10 = after[10];
99	aarg11 = after[11];
100	aarg12 = after[12];
101	aarg13 = after[13];
102	aarg14 = after[14];
103	if (incremental_sq == NULL)
104	incremental_sq = sq_create();
105	if (incremental_exec == NULL)
106	incremental_exec = sq_create();
107	}
108
109
110	incremental_before(table, qual, argv)
111	char *table;
112	char *qual;
113	char **argv;
114	{
115	EXEC SQL BEGIN DECLARE SECTION;
116	int id;
117	EXEC SQL END DECLARE SECTION;
118
119	char buffer[512], *name;
120
121	beforetable = table;
122
123	if (!strcmp(table, "users")) {
124	/*
125	* retrieve (barg0 = u.login, barg1 = text(u.uid),
126	* barg2 = u.shell, barg3 = u.last, barg4 = u.first,
127	* barg5 = u.middle, barg6 = text(u.status),
128	* barg7 = u.mit_id, barg8 = u.mit_year)
129	* where qual
130	*/
131	EXEC SQL SELECT login, uid, shell, last, first, middle,
132	text(u.status), mit_id, mit_year
a313cad2	133	INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
a313cad2	134	:barg7, :barg8
32cfe906	135	FROM users WHERE :qual;
	136	beforec = 9;
	137	} else if (!strcmp(table, "machine")) {
a313cad2	138	/*
	139	* retrieve (barg0 = m.name, barg1 = m.type) where qual
	140	*/
	141	EXEC SQL SELECT name, type INTO :barg0, :barg1 FROM machine
	142	WHERE :qual;
32cfe906	143	beforec = 2;
32cfe906	144	} else if (!strcmp(table, "cluster")) {
a313cad2	145	/*
	146	* retrieve (barg0 = c.name, barg1 = c.desc, barg2 = c.location)
	147	* where qual
	148	*/
	149	EXEC SQL SELECT name, desc, location INTO :barg0, :barg1, :barg2
	150	FROM cluster WHERE :qual;
32cfe906	151	beforec = 3;
	152	} else if (!strcmp(table, "mcmap")) {
	153	strcpy(barg0, argv[0]);
	154	strcpy(barg1, argv[1]);
	155	beforec = 2;
	156	} else if (!strcmp(table, "svc")) {
	157	strcpy(barg0, argv[0]);
	158	strcpy(barg1, argv[1]);
	159	strcpy(barg2, argv[2]);
	160	beforec = 3;
	161	} else if (!strcmp(table, "filesys")) {
a313cad2	162	/*
	163	* range of fs is filesys
	164	* retrieve (barg0 = fs.label, barg1 = fs.type, barg2 = text(fs.mach_id),
	165	* barg3 = fs.name, barg4 = fs.mount, barg5 = fs.access,
	166	* barg6 = fs.comments, barg7 = text(fs.owner),
	167	* barg8 = text(fs.owners), barg9 = text(fs.createflg),
	168	* barg10 = fs.lockertype)
	169	* where qual
	170	*/
	171	EXEC SQL SELECT label, type, text(mach_id), name, mount, access,
	172	comments, text(owner), text(owners), text(createflag), lockertype
	173	INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	174	:barg7, :barg8, :barg9, :barg10
	175	FROM filesys WHERE :qual;
32cfe906	176	beforec = 11;
	177	} else if (!strcmp(table, "quota")) {
	178	strcpy(barg0, "?");
	179	strcpy(barg1, argv[1]);
	180	strcpy(barg2, "?");
a313cad2	181	sprintf(buffer, "%s and fs.filsys_id = q.filsys_id", qual);
32cfe906	182	qual = buffer;
a313cad2	183	/*
	184	* range of q is quota
	185	* retrieve (barg3 = text(q.quota), barg4 = filesys.name) where qual
	186	*/
	187	EXEC SQL SELECT q.quota, fs.name INTO :barg3, :barg4
	188	FROM quota q, filesys fs WHERE :qual;
32cfe906	189	beforec = 5;
32cfe906	190	} else if (!strcmp(table, "list")) {
a313cad2	191	/*
	192	* retrieve (barg0 = l.name, barg1 = text(l.active),
	193	* barg2 = text(l.public), barg3 = text(l.hidden),
	194	* barg4 = text(l.maillist), barg5 = text(l.group),
	195	* barg6 = text(l.gid), barg7 = l.acl_type,
	196	* barg8 = text(l.acl_id), barg9 = l.desc)
	197	* where qual
	198	*/
	199	EXEC SQL SELECT name, text(active), text(public), text(hidden),
	200	text(maillist), text(grouplist), text(gid), acl_type,
	201	text(acl_id), desc
	202	INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	203	:barg7, :barg8, :barg9
	204	FROM list WHERE :qual;
32cfe906	205	beforec = 10;
	206	} else if (!strcmp(table, "members")) {
	207	id = (int) argv[0];
a313cad2	208	/*
	209	* retrieve (barg3 = text(list.group)) where list.list_id = id
	210	*/
	211	EXEC SQL SELECT text(list.group) INTO :barg3 FROM list
	212	WHERE list_id = :id;
32cfe906	213	name = malloc(0);
	214	id_to_name(id, "LIST", &name);
	215	strcpy(barg0, name);
	216	strcpy(barg1, argv[1]);
	217	id = (int) argv[2];
	218	if (!strcmp(barg1, "USER")) {
	219	id_to_name(id, barg1, &name);
	220	} else if (!strcmp(barg1, "LIST")) {
	221	id_to_name(id, barg1, &name);
	222	} else if (!strcmp(barg1, "STRING")) {
	223	id_to_name(id, barg1, &name);
	224	} else if (!strcmp(barg1, "KERBEROS")) {
	225	id_to_name(id, "STRING", &name);
	226	}
	227	strcpy(barg2, name);
	228	free(name);
	229	beforec = 4;
	230	} /* else
	231	com_err(whoami, 0, "unknown table in incremental_before"); */
a313cad2	232	}
32cfe906	233
	234
	235	incremental_clear_before()
	236	{
	237	beforec = 0;
	238	}
	239
	240	incremental_clear_after()
	241	{
	242	incremental_after("clear", 0);
	243	}
	244
	245
	246
a313cad2	247	incremental_after(table, qual, argv)
	248	EXEC SQL BEGIN DECLARE SECTION;
	249	char *table;
	250	char *qual;
	251	EXEC SQL END DECLARE SECTION;
32cfe906	252	char **argv;
a313cad2	253	{
32cfe906	254	char buffer[2048], *name;
a313cad2	255	EXEC SQL BEGIN DECLARE SECTION;
	256	int id, i;
	257	EXEC SQL END DECLARE SECTION;
32cfe906	258	struct iupdate *iu;
	259	char **copy_argv();
	260
	261	if (!strcmp(table, "users")) {
a313cad2	262	/*
	263	* retrieve (aarg0 = u.login, aarg1 = text(u.uid),
	264	* aarg2 = u.shell, aarg3 = u.last, aarg4 = u.first,
	265	* aarg5 = u.middle, aarg6 = text(u.status),
	266	* aarg7 = u.mit_id, aarg8 = u.mit_year)
	267	* where qual
	268	*/
	269	EXEC SQL SELECT login, uid, shell, last, first, middle,
	270	text(status), mit_id, mit_year
	271	INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5,
	272	:aarg6, :aarg7, :aarg8
	273	FROM users WHERE :qual;
32cfe906	274	afterc = 9;
32cfe906	275	} else if (!strcmp(table, "machine")) {
a313cad2	276	/*
	277	* retrieve (aarg0 = m.name, aarg1 = m.type) where qual
	278	*/
	279	EXEC SQL SELECT name, type INTO :aarg0, :aarg1
	280	FROM machine WHERE :qual;
32cfe906	281	afterc = 2;
32cfe906	282	} else if (!strcmp(table, "cluster")) {
a313cad2	283	/*
	284	* retrieve (aarg0 = c.name, aarg1 = c.desc, aarg2 = c.location)
	285	* where qual
	286	*/
	287	EXEC SQL SELECT name, desc, location INTO :aarg0, :aarg1, :aarg2
	288	FROM cluster WHERE :qual;
32cfe906	289	afterc = 3;
	290	} else if (!strcmp(table, "mcmap")) {
	291	strcpy(aarg0, argv[0]);
	292	strcpy(aarg1, argv[1]);
	293	afterc = 2;
	294	} else if (!strcmp(table, "svc")) {
	295	strcpy(aarg0, argv[0]);
	296	strcpy(aarg1, argv[1]);
	297	strcpy(aarg2, argv[2]);
	298	afterc = 3;
	299	} else if (!strcmp(table, "filesys")) {
a313cad2	300	/*
	301	* range of fs is filesys
	302	* retrieve (aarg0 = fs.label, aarg1 = fs.type,
	303	* aarg2 = text(fs.mach_id),
	304	* aarg3 = fs.name, aarg4 = fs.mount, aarg5 = fs.access,
	305	* aarg6 = fs.comments, aarg7 = text(fs.owner),
	306	* aarg8 = text(fs.owners), aarg9 = text(fs.createflg),
	307	* aarg10 = fs.lockertype)
	308	* where qual
	309	*/
	310	EXEC SQL SELECT label, type, text(mach_id), name, mount, access,
	311	comments, text(owner), text(owners), text(createflag), lockertype
	312	INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	313	:aarg7, :aarg8, :aarg9, :aarg10
	314	FROM filesys fs WHERE :qual;
32cfe906	315	afterc = 11;
	316	} else if (!strcmp(table, "quota")) {
	317	strcpy(aarg0, "?");
	318	strcpy(aarg1, argv[1]);
	319	strcpy(aarg2, "?");
a313cad2	320	sprintf(buffer, "%s and fs.filsys_id = q.filsys_id", qual);
32cfe906	321	qual = buffer;
a313cad2	322	/*
	323	* range of q is quota
	324	* retrieve (aarg3 = text(q.quota), aarg4 = filesys.name) where qual
	325	*/
	326	EXEC SQL SELECT text(q.quota), fs.name INTO :aarg3, :aarg4
	327	FROM quota q, filesys fs WHERE :qual;
32cfe906	328	afterc = 5;
32cfe906	329	} else if (!strcmp(table, "list")) {
a313cad2	330	/*
	331	* retrieve (aarg0 = l.name, aarg1 = text(l.active),
	332	* aarg2 = text(l.public), aarg3 = text(l.hidden),
	333	* aarg4 = text(l.maillist), aarg5 = text(l.group),
	334	* aarg6 = text(l.gid), aarg7 = l.acl_type,
	335	* aarg8 = text(l.acl_id), aarg9 = l.desc)
	336	* where qual
	337	*/
	338	EXEC SQL SELECT name, text(active), text(public), text(hidden),
	339	text(maillist), text(grouplist), text(gid), acl_type,
	340	text(acl_id), desc
	341	INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	342	:aarg7, :aarg8, :aarg9
	343	FROM list WHERE :qual;
32cfe906	344	afterc = 10;
	345	} else if (!strcmp(table, "members")) {
	346	id = (int) argv[0];
a313cad2	347	/*
	348	* retrieve (aarg3 = text(list.group)) where list.list_id = id
	349	*/
	350	EXEC SQL SELECT text(list.group) INTO :aarg3 FROM list
	351	WHERE list_id = :id;
32cfe906	352	name = malloc(0);
	353	id_to_name(id, "LIST", &name);
	354	strcpy(aarg0, name);
	355	strcpy(aarg1, argv[1]);
	356	id = (int) argv[2];
	357	if (!strcmp(aarg1, "USER")) {
	358	id_to_name(id, aarg1, &name);
	359	} else if (!strcmp(aarg1, "LIST")) {
	360	id_to_name(id, aarg1, &name);
	361	} else if (!strcmp(aarg1, "STRING")) {
	362	id_to_name(id, aarg1, &name);
	363	} else if (!strcmp(aarg1, "KERBEROS")) {
	364	id_to_name(id, "STRING", &name);
	365	}
	366	strcpy(aarg2, name);
	367	free(name);
	368	afterc = 4;
	369	} else if (!strcmp(table, "clear")) {
	370	afterc = 0;
	371	table = beforetable;
	372	} /* else
	373	com_err(whoami, 0, "unknown table in incremental_after"); */
	374
	375	iu = (struct iupdate *) malloc(sizeof(struct iupdate));
	376	iu->table = strsave(table);
	377	iu->beforec = beforec;
	378	iu->before = copy_argv(before, beforec);
	379	iu->afterc = afterc;
	380	iu->after = copy_argv(after, afterc);
	381	sq_save_data(incremental_sq, iu);
	382
	383	#ifdef DEBUG
	384	sprintf(buffer, "INCREMENTAL(%s, [", table);
	385	for (i = 0; i < beforec; i++) {
	386	if (i == 0)
	387	strcat(buffer, strtrim(before[0]));
	388	else {
	389	strcat(buffer, ", ");
	390	strcat(buffer, strtrim(before[i]));
	391	}
	392	}
	393	strcat(buffer, "], [");
	394	for (i = 0; i < afterc; i++) {
	395	if (i == 0)
	396	strcat(buffer, strtrim(after[0]));
	397	else {
	398	strcat(buffer, ", ");
	399	strcat(buffer, strtrim(after[i]));
	400	}
	401	}
	402	strcat(buffer, "])");
	403	com_err(whoami, 0, buffer);
	404	#endif DEBUG
a313cad2	405	}
32cfe906	406
	407
	408	/* Called when the current transaction is committed to start any queued
	409	* incremental updates. This caches the update table the first time it
	410	* is called.
	411	*/
	412
	413	struct inc_cache {
	414	struct inc_cache *next;
	415	char *table;
	416	char *service;
	417	};
	418
	419
	420	incremental_update()
	421	{
	422	static int inited = 0;
	423	static struct inc_cache *cache;
	424	struct inc_cache *c;
	425	EXEC SQL BEGIN DECLARE SECTION;
	426	char tab[17], serv[17];
	427	EXEC SQL END DECLARE SECTION;
	428	struct iupdate *iu;
	429
	430	if (!inited) {
	431	inited++;
	432
	433	EXEC SQL DECLARE inc CURSOR FOR SELECT table, service FROM incremental;
	434	EXEC SQL OPEN inc;
	435	while (1) {
	436	EXEC SQL FETCH inc INTO :tab, :serv;
	437	if (sqlca.sqlcode != 0) break;
	438	c = (struct inc_cache *)malloc(sizeof(struct inc_cache));
	439	c->next = cache;
	440	c->table = strsave(strtrim(tab));
	441	c->service = strsave(strtrim(serv));
	442	cache = c;
	443	}
	444	EXEC SQL CLOSE inc;
	445	}
	446
	447	while (sq_remove_data(incremental_sq, &iu)) {
	448	for (c = cache; c; c = c->next) {
	449	if (!strcmp(c->table, iu->table)) {
	450	iu->service = c->service;
	451	sq_save_data(incremental_exec, iu);
	452	}
	453	}
	454	}
	455	if (inc_running == 0)
	456	next_incremental();
	457	}
	458
	459
	460	next_incremental()
	461	{
	462	struct iupdate *iu;
	463	char argv[MAXARGC 2 + 4], cafter[3], cbefore[3], prog[BUFSIZ];
	464	int i;
	465
	466	if (incremental_exec == NULL)
	467	incremental_init();
	468
	469	if (sq_empty(incremental_exec) \|\|
470	(inc_running && now - inc_started < INC_TIMEOUT))
471	return;
472
473	if (inc_running)
474	com_err(whoami, 0, "incremental timeout on pid %d", inc_pid);
475
476	sq_remove_data(incremental_exec, &iu);
477	argv[1] = iu->table;
478	sprintf(cbefore, "%d", iu->beforec);
479	argv[2] = cbefore;
480	sprintf(cafter, "%d", iu->afterc);
481	argv[3] = cafter;
482	for (i = 0; i < iu->beforec; i++)
483	argv[4 + i] = iu->before[i];
484	for (i = 0; i < iu->afterc; i++)
485	argv[4 + iu->beforec + i] = iu->after[i];
486
487	sprintf(prog, "%s/%s.incr", BIN_DIR, iu->service);
488	#ifdef DEBUG
489	com_err(whoami, 0, "forking %s", prog);
490	#endif
491	argv[0] = prog;
492	argv[4 + iu->beforec + iu->afterc] = 0;
493	inc_pid = vfork();
494	switch (inc_pid) {
495	case 0:
496	execv(prog, argv);
497	exit(1);
498	case -1:
499	com_err(whoami, 0, "Failed to start incremental update");
500	break;
501	default:
502	inc_running = 1;
503	inc_started = now;
504	}
505
506	free_argv(iu->before, iu->beforec);
507	free_argv(iu->after, iu->afterc);
508	free(iu->table);
509	free(iu);
510
511	}
512
513
514	/* Called when the current transaction is aborted to throw away any queued
515	* incremental updates
516	*/
517
518	incremental_flush()
519	{
520	struct iupdate *iu;
521
522	while (sq_get_data(incremental_sq, &iu)) {
523	free_argv(iu->before, iu->beforec);
524	free_argv(iu->after, iu->afterc);
525	free(iu->table);
526	free(iu);
527	}
528	sq_destroy(incremental_sq);
529	incremental_sq = sq_create();
530	}
531
532
533	char **copy_argv(argv, argc)
534	char **argv;
535	int argc;
536	{
537	char ret = (char )malloc(sizeof(char ) argc);
538	while (--argc >= 0)
539	ret[argc] = strsave(strtrim(argv[argc]));
540	return(ret);
541	}
542
543	free_argv(argv, argc)
544	char **argv;
545	int argc;
546	{
547	while (--argc >= 0)
548	free(argv[argc]);
549	free(argv);
550	}