[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 <fcntl.h>
#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

EXEC SQL WHENEVER SQLERROR CALL ingerr;

/* 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;
EXEC SQL BEGIN DECLARE SECTION; 
char *qual;
EXEC SQL END DECLARE SECTION; 
char **argv;
{
    EXEC SQL BEGIN DECLARE SECTION;
    int id;
    EXEC SQL END DECLARE SECTION;

    char buffer[512], *name;

    beforetable = table;

    if (!strcmp(table, "users")) {
	EXEC SQL SELECT login, CHAR(uid), shell, last, first, middle, 
	    CHAR(status), clearid, type
	  INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	    :barg7, :barg8
	  FROM users WHERE :qual;
	beforec = 9;
    } else if (!strcmp(table, "machine")) {
	EXEC SQL SELECT name, type INTO :barg0, :barg1 FROM machine
	  WHERE :qual;
	beforec = 2;
    } else if (!strcmp(table, "cluster")) {
	EXEC SQL SELECT name, description, 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")) {
	EXEC SQL SELECT label, type, CHAR(mach_id), name, mount, access,
	    comments, CHAR(owner), CHAR(owners), CHAR(createflg), lockertype
	  INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6, 
            :barg7, :barg8, :barg9, :barg10
	  FROM filesys WHERE :qual;
        name = malloc(0);
        id = atoi(barg2);
        id_to_name(id, "MACHINE", &name);
        strcpy(barg2, name);
        id = atoi(barg7);
        id_to_name(id, "USER", &name);
        strcpy(barg7, name);
        id = atoi(barg8);
        id_to_name(id, "LIST", &name);
        strcpy(barg8, name);
        free(name);
	beforec = 11;
    } else if (!strcmp(table, "quota")) {
	strcpy(barg0, "?");
	strcpy(barg1, argv[1]);
	strcpy(barg2, "?");
	sprintf(buffer, "%s and filesys.filsys_id = quota.filsys_id", qual);
	qual = buffer;
	EXEC SQL SELECT CHAR(quota.quota), filesys.name INTO :barg3, :barg4
	  FROM quota, filesys WHERE :qual;
	beforec = 5;
    } else if (!strcmp(table, "list")) {
	EXEC SQL SELECT name, CHAR(active), CHAR(publicflg), CHAR(hidden),
	    CHAR(maillist), CHAR(grouplist), CHAR(gid), acl_type,
	    CHAR(acl_id), description
	  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];
	EXEC SQL SELECT CHAR(grouplist) 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)
char *table;
EXEC SQL BEGIN DECLARE SECTION; 
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")) {
	EXEC SQL SELECT login, CHAR(uid), shell, last, first, middle,
	    CHAR(status), clearid, type
	  INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5,
	    :aarg6, :aarg7, :aarg8
	  FROM users WHERE :qual;
	afterc = 9;
    } else if (!strcmp(table, "machine")) {
	EXEC SQL SELECT name, type INTO :aarg0, :aarg1
	  FROM machine WHERE :qual;
	afterc = 2;
    } else if (!strcmp(table, "cluster")) {
	EXEC SQL SELECT name, description, 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")) {
        EXEC SQL SELECT CHAR(label), type, CHAR(mach_id), name, mount, access,
	    comments, CHAR(owner), CHAR(owners), CHAR(createflg), lockertype
          INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	      :aarg7, :aarg8, :aarg9, :aarg10
          FROM filesys fs WHERE :qual;
        name = malloc(0);
        id = atoi(aarg2);
        id_to_name(id, "MACHINE", &name);
        strcpy(aarg2, name);
        id = atoi(aarg7);
        id_to_name(id, "USER", &name);
        strcpy(aarg7, name);
        id = atoi(aarg8);
        id_to_name(id, "LIST", &name);
        strcpy(aarg8, name);
        free(name);
	afterc = 11;
    } else if (!strcmp(table, "quota")) {
	strcpy(aarg0, "?");
	strcpy(aarg1, argv[1]);
	strcpy(aarg2, "?");
	sprintf(buffer, "%s and filesys.filsys_id = quota.filsys_id", qual);
	qual = buffer;
	EXEC SQL SELECT CHAR(quota.quota), filesys.name INTO :aarg3, :aarg4
	  FROM quota, filesys WHERE :qual;
	afterc = 5;
    } else if (!strcmp(table, "list")) {
	EXEC SQL SELECT name, CHAR(active), CHAR(publicflg), CHAR(hidden),
	    CHAR(maillist), CHAR(grouplist), CHAR(gid), acl_type,
	    CHAR(acl_id), description
	  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];
	EXEC SQL SELECT CHAR(grouplist) 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 tablename, 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
af0171d9	16	#include <fcntl.h>
32cfe906	17	#include <mit-copyright.h>
	18	#include <moira.h>
	19	#include "query.h"
	20	#include "mr_server.h"
45bf7573	21	EXEC SQL INCLUDE sqlca;
32cfe906	22
	23	extern char *whoami;
	24	char *malloc();
	25
	26	int inc_pid = 0;
	27	int inc_running = 0;
	28	time_t inc_started;
	29
	30	#define MAXARGC 15
	31
45bf7573	32	EXEC SQL WHENEVER SQLERROR CALL ingerr;
45bf7573	33
32cfe906	34	/* structures to save before args */
	35	static char beforeb[MAXARGC][ARGLEN];
	36	static char *before[MAXARGC];
	37	EXEC SQL BEGIN DECLARE SECTION;
	38	char barg0, barg1, barg2, barg3, *barg4;
	39	char barg5, barg6, barg7, barg8, *barg9;
	40	char barg10, barg11, barg12, barg13, *barg14;
	41	EXEC SQL END DECLARE SECTION;
	42	static int beforec;
	43	static char *beforetable;
	44
	45	/* structures to save after args */
	46	static char afterb[MAXARGC][ARGLEN];
	47	static char *after[MAXARGC];
	48	EXEC SQL BEGIN DECLARE SECTION;
	49	char aarg0, aarg1, aarg2, aarg3, *aarg4;
	50	char aarg5, aarg6, aarg7, aarg8, *aarg9;
	51	char aarg10, aarg11, aarg12, aarg13, *aarg14;
	52	EXEC SQL END DECLARE SECTION;
	53	static int afterc;
	54
	55	/* structures to save entire sets of incremental changes */
	56	struct save_queue *incremental_sq = NULL;
	57	struct save_queue *incremental_exec = NULL;
	58	struct iupdate {
	59	char *table;
	60	int beforec;
	61	char **before;
	62	int afterc;
	63	char **after;
	64	char *service;
	65	};
	66
	67
	68	incremental_init()
	69	{
	70	int i;
	71
	72	for (i = 0; i < MAXARGC; i++) {
	73	before[i] = &beforeb[i][0];
	74	after[i] = &afterb[i][0];
	75	}
	76	barg0 = before[0];
	77	barg1 = before[1];
	78	barg2 = before[2];
	79	barg3 = before[3];
	80	barg4 = before[4];
	81	barg5 = before[5];
	82	barg6 = before[6];
	83	barg7 = before[7];
	84	barg8 = before[8];
	85	barg9 = before[9];
	86	barg10 = before[10];
	87	barg11 = before[11];
	88	barg12 = before[12];
	89	barg13 = before[13];
	90	barg14 = before[14];
	91	aarg0 = after[0];
	92	aarg1 = after[1];
	93	aarg2 = after[2];
	94	aarg3 = after[3];
	95	aarg4 = after[4];
	96	aarg5 = after[5];
	97	aarg6 = after[6];
98	aarg7 = after[7];
99	aarg8 = after[8];
100	aarg9 = after[9];
101	aarg10 = after[10];
102	aarg11 = after[11];
103	aarg12 = after[12];
104	aarg13 = after[13];
105	aarg14 = after[14];
106	if (incremental_sq == NULL)
107	incremental_sq = sq_create();
108	if (incremental_exec == NULL)
109	incremental_exec = sq_create();
110	}
111
112
113	incremental_before(table, qual, argv)
114	char *table;
45bf7573	115	EXEC SQL BEGIN DECLARE SECTION;
32cfe906	116	char *qual;
45bf7573	117	EXEC SQL END DECLARE SECTION;
32cfe906	118	char **argv;
	119	{
	120	EXEC SQL BEGIN DECLARE SECTION;
	121	int id;
	122	EXEC SQL END DECLARE SECTION;
	123
	124	char buffer[512], *name;
	125
	126	beforetable = table;
	127
	128	if (!strcmp(table, "users")) {
45bf7573	129	EXEC SQL SELECT login, CHAR(uid), shell, last, first, middle,
45bf7573	130	CHAR(status), clearid, type
a313cad2	131	INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
a313cad2	132	:barg7, :barg8
32cfe906	133	FROM users WHERE :qual;
	134	beforec = 9;
	135	} else if (!strcmp(table, "machine")) {
a313cad2	136	EXEC SQL SELECT name, type INTO :barg0, :barg1 FROM machine
a313cad2	137	WHERE :qual;
32cfe906	138	beforec = 2;
32cfe906	139	} else if (!strcmp(table, "cluster")) {
45bf7573	140	EXEC SQL SELECT name, description, location
45bf7573	141	INTO :barg0, :barg1, :barg2
a313cad2	142	FROM cluster WHERE :qual;
32cfe906	143	beforec = 3;
	144	} else if (!strcmp(table, "mcmap")) {
	145	strcpy(barg0, argv[0]);
	146	strcpy(barg1, argv[1]);
	147	beforec = 2;
	148	} else if (!strcmp(table, "svc")) {
	149	strcpy(barg0, argv[0]);
	150	strcpy(barg1, argv[1]);
	151	strcpy(barg2, argv[2]);
	152	beforec = 3;
	153	} else if (!strcmp(table, "filesys")) {
45bf7573	154	EXEC SQL SELECT label, type, CHAR(mach_id), name, mount, access,
99e09b48	155	comments, CHAR(owner), CHAR(owners), CHAR(createflg), lockertype
a313cad2	156	INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	157	:barg7, :barg8, :barg9, :barg10
	158	FROM filesys WHERE :qual;
bc5e9d66	159	name = malloc(0);
	160	id = atoi(barg2);
	161	id_to_name(id, "MACHINE", &name);
	162	strcpy(barg2, name);
	163	id = atoi(barg7);
	164	id_to_name(id, "USER", &name);
	165	strcpy(barg7, name);
	166	id = atoi(barg8);
	167	id_to_name(id, "LIST", &name);
	168	strcpy(barg8, name);
	169	free(name);
32cfe906	170	beforec = 11;
	171	} else if (!strcmp(table, "quota")) {
	172	strcpy(barg0, "?");
	173	strcpy(barg1, argv[1]);
	174	strcpy(barg2, "?");
af0171d9	175	sprintf(buffer, "%s and filesys.filsys_id = quota.filsys_id", qual);
32cfe906	176	qual = buffer;
af0171d9	177	EXEC SQL SELECT CHAR(quota.quota), filesys.name INTO :barg3, :barg4
af0171d9	178	FROM quota, filesys WHERE :qual;
32cfe906	179	beforec = 5;
32cfe906	180	} else if (!strcmp(table, "list")) {
45bf7573	181	EXEC SQL SELECT name, CHAR(active), CHAR(publicflg), CHAR(hidden),
	182	CHAR(maillist), CHAR(grouplist), CHAR(gid), acl_type,
	183	CHAR(acl_id), description
a313cad2	184	INTO :barg0, :barg1, :barg2, :barg3, :barg4, :barg5, :barg6,
	185	:barg7, :barg8, :barg9
	186	FROM list WHERE :qual;
32cfe906	187	beforec = 10;
	188	} else if (!strcmp(table, "members")) {
	189	id = (int) argv[0];
45bf7573	190	EXEC SQL SELECT CHAR(grouplist) INTO :barg3 FROM list
a313cad2	191	WHERE list_id = :id;
32cfe906	192	name = malloc(0);
	193	id_to_name(id, "LIST", &name);
	194	strcpy(barg0, name);
	195	strcpy(barg1, argv[1]);
	196	id = (int) argv[2];
	197	if (!strcmp(barg1, "USER")) {
	198	id_to_name(id, barg1, &name);
	199	} else if (!strcmp(barg1, "LIST")) {
	200	id_to_name(id, barg1, &name);
	201	} else if (!strcmp(barg1, "STRING")) {
	202	id_to_name(id, barg1, &name);
	203	} else if (!strcmp(barg1, "KERBEROS")) {
	204	id_to_name(id, "STRING", &name);
	205	}
	206	strcpy(barg2, name);
	207	free(name);
	208	beforec = 4;
	209	} /* else
	210	com_err(whoami, 0, "unknown table in incremental_before"); */
a313cad2	211	}
32cfe906	212
	213
	214	incremental_clear_before()
	215	{
	216	beforec = 0;
	217	}
	218
	219	incremental_clear_after()
	220	{
	221	incremental_after("clear", 0);
	222	}
	223
	224
	225
a313cad2	226	incremental_after(table, qual, argv)
a313cad2	227	char *table;
45bf7573	228	EXEC SQL BEGIN DECLARE SECTION;
a313cad2	229	char *qual;
a313cad2	230	EXEC SQL END DECLARE SECTION;
32cfe906	231	char **argv;
a313cad2	232	{
32cfe906	233	char buffer[2048], *name;
a313cad2	234	EXEC SQL BEGIN DECLARE SECTION;
	235	int id, i;
	236	EXEC SQL END DECLARE SECTION;
32cfe906	237	struct iupdate *iu;
	238	char **copy_argv();
	239
	240	if (!strcmp(table, "users")) {
45bf7573	241	EXEC SQL SELECT login, CHAR(uid), shell, last, first, middle,
45bf7573	242	CHAR(status), clearid, type
a313cad2	243	INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5,
	244	:aarg6, :aarg7, :aarg8
	245	FROM users WHERE :qual;
32cfe906	246	afterc = 9;
32cfe906	247	} else if (!strcmp(table, "machine")) {
a313cad2	248	EXEC SQL SELECT name, type INTO :aarg0, :aarg1
a313cad2	249	FROM machine WHERE :qual;
32cfe906	250	afterc = 2;
32cfe906	251	} else if (!strcmp(table, "cluster")) {
45bf7573	252	EXEC SQL SELECT name, description, location
45bf7573	253	INTO :aarg0, :aarg1, :aarg2
a313cad2	254	FROM cluster WHERE :qual;
32cfe906	255	afterc = 3;
	256	} else if (!strcmp(table, "mcmap")) {
	257	strcpy(aarg0, argv[0]);
	258	strcpy(aarg1, argv[1]);
	259	afterc = 2;
	260	} else if (!strcmp(table, "svc")) {
	261	strcpy(aarg0, argv[0]);
	262	strcpy(aarg1, argv[1]);
	263	strcpy(aarg2, argv[2]);
	264	afterc = 3;
	265	} else if (!strcmp(table, "filesys")) {
99e09b48	266	EXEC SQL SELECT CHAR(label), type, CHAR(mach_id), name, mount, access,
99e09b48	267	comments, CHAR(owner), CHAR(owners), CHAR(createflg), lockertype
a313cad2	268	INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	269	:aarg7, :aarg8, :aarg9, :aarg10
	270	FROM filesys fs WHERE :qual;
bc5e9d66	271	name = malloc(0);
	272	id = atoi(aarg2);
	273	id_to_name(id, "MACHINE", &name);
	274	strcpy(aarg2, name);
	275	id = atoi(aarg7);
	276	id_to_name(id, "USER", &name);
	277	strcpy(aarg7, name);
	278	id = atoi(aarg8);
	279	id_to_name(id, "LIST", &name);
	280	strcpy(aarg8, name);
	281	free(name);
32cfe906	282	afterc = 11;
	283	} else if (!strcmp(table, "quota")) {
	284	strcpy(aarg0, "?");
	285	strcpy(aarg1, argv[1]);
	286	strcpy(aarg2, "?");
af0171d9	287	sprintf(buffer, "%s and filesys.filsys_id = quota.filsys_id", qual);
32cfe906	288	qual = buffer;
af0171d9	289	EXEC SQL SELECT CHAR(quota.quota), filesys.name INTO :aarg3, :aarg4
af0171d9	290	FROM quota, filesys WHERE :qual;
32cfe906	291	afterc = 5;
32cfe906	292	} else if (!strcmp(table, "list")) {
45bf7573	293	EXEC SQL SELECT name, CHAR(active), CHAR(publicflg), CHAR(hidden),
	294	CHAR(maillist), CHAR(grouplist), CHAR(gid), acl_type,
	295	CHAR(acl_id), description
a313cad2	296	INTO :aarg0, :aarg1, :aarg2, :aarg3, :aarg4, :aarg5, :aarg6,
	297	:aarg7, :aarg8, :aarg9
	298	FROM list WHERE :qual;
32cfe906	299	afterc = 10;
	300	} else if (!strcmp(table, "members")) {
	301	id = (int) argv[0];
45bf7573	302	EXEC SQL SELECT CHAR(grouplist) INTO :aarg3 FROM list
a313cad2	303	WHERE list_id = :id;
32cfe906	304	name = malloc(0);
	305	id_to_name(id, "LIST", &name);
	306	strcpy(aarg0, name);
	307	strcpy(aarg1, argv[1]);
	308	id = (int) argv[2];
	309	if (!strcmp(aarg1, "USER")) {
	310	id_to_name(id, aarg1, &name);
	311	} else if (!strcmp(aarg1, "LIST")) {
	312	id_to_name(id, aarg1, &name);
	313	} else if (!strcmp(aarg1, "STRING")) {
	314	id_to_name(id, aarg1, &name);
	315	} else if (!strcmp(aarg1, "KERBEROS")) {
	316	id_to_name(id, "STRING", &name);
	317	}
	318	strcpy(aarg2, name);
	319	free(name);
	320	afterc = 4;
	321	} else if (!strcmp(table, "clear")) {
	322	afterc = 0;
	323	table = beforetable;
	324	} /* else
	325	com_err(whoami, 0, "unknown table in incremental_after"); */
	326
	327	iu = (struct iupdate *) malloc(sizeof(struct iupdate));
	328	iu->table = strsave(table);
	329	iu->beforec = beforec;
	330	iu->before = copy_argv(before, beforec);
	331	iu->afterc = afterc;
	332	iu->after = copy_argv(after, afterc);
	333	sq_save_data(incremental_sq, iu);
	334
	335	#ifdef DEBUG
	336	sprintf(buffer, "INCREMENTAL(%s, [", table);
	337	for (i = 0; i < beforec; i++) {
	338	if (i == 0)
	339	strcat(buffer, strtrim(before[0]));
	340	else {
	341	strcat(buffer, ", ");
	342	strcat(buffer, strtrim(before[i]));
	343	}
	344	}
	345	strcat(buffer, "], [");
	346	for (i = 0; i < afterc; i++) {
	347	if (i == 0)
	348	strcat(buffer, strtrim(after[0]));
	349	else {
	350	strcat(buffer, ", ");
	351	strcat(buffer, strtrim(after[i]));
	352	}
	353	}
	354	strcat(buffer, "])");
	355	com_err(whoami, 0, buffer);
	356	#endif DEBUG
a313cad2	357	}
32cfe906	358
	359
	360	/* Called when the current transaction is committed to start any queued
	361	* incremental updates. This caches the update table the first time it
	362	* is called.
	363	*/
	364
	365	struct inc_cache {
	366	struct inc_cache *next;
	367	char *table;
	368	char *service;
	369	};
	370
	371
	372	incremental_update()
	373	{
	374	static int inited = 0;
	375	static struct inc_cache *cache;
	376	struct inc_cache *c;
	377	EXEC SQL BEGIN DECLARE SECTION;
	378	char tab[17], serv[17];
	379	EXEC SQL END DECLARE SECTION;
	380	struct iupdate *iu;
	381
	382	if (!inited) {
	383	inited++;
	384
45bf7573	385	EXEC SQL DECLARE inc CURSOR FOR SELECT tablename, service FROM incremental;
32cfe906	386	EXEC SQL OPEN inc;
	387	while (1) {
	388	EXEC SQL FETCH inc INTO :tab, :serv;
	389	if (sqlca.sqlcode != 0) break;
	390	c = (struct inc_cache *)malloc(sizeof(struct inc_cache));
	391	c->next = cache;
	392	c->table = strsave(strtrim(tab));
	393	c->service = strsave(strtrim(serv));
	394	cache = c;
	395	}
	396	EXEC SQL CLOSE inc;
	397	}
	398
	399	while (sq_remove_data(incremental_sq, &iu)) {
	400	for (c = cache; c; c = c->next) {
	401	if (!strcmp(c->table, iu->table)) {
	402	iu->service = c->service;
	403	sq_save_data(incremental_exec, iu);
	404	}
	405	}
	406	}
	407	if (inc_running == 0)
	408	next_incremental();
	409	}
	410
	411
	412	next_incremental()
	413	{
	414	struct iupdate *iu;
	415	char argv[MAXARGC 2 + 4], cafter[3], cbefore[3], prog[BUFSIZ];
	416	int i;
	417
	418	if (incremental_exec == NULL)
	419	incremental_init();
	420
	421	if (sq_empty(incremental_exec) \|\|
	422	(inc_running && now - inc_started < INC_TIMEOUT))
	423	return;
	424
	425	if (inc_running)
	426	com_err(whoami, 0, "incremental timeout on pid %d", inc_pid);
	427
	428	sq_remove_data(incremental_exec, &iu);
	429	argv[1] = iu->table;
	430	sprintf(cbefore, "%d", iu->beforec);
	431	argv[2] = cbefore;
	432	sprintf(cafter, "%d", iu->afterc);
	433	argv[3] = cafter;
	434	for (i = 0; i < iu->beforec; i++)
	435	argv[4 + i] = iu->before[i];
	436	for (i = 0; i < iu->afterc; i++)
	437	argv[4 + iu->beforec + i] = iu->after[i];
	438
	439	sprintf(prog, "%s/%s.incr", BIN_DIR, iu->service);
	440	#ifdef DEBUG
	441	com_err(whoami, 0, "forking %s", prog);
	442	#endif
	443	argv[0] = prog;
	444	argv[4 + iu->beforec + iu->afterc] = 0;
	445	inc_pid = vfork();
	446	switch (inc_pid) {
	447	case 0:
	448	execv(prog, argv);
af0171d9	449	_exit(1);
32cfe906	450	case -1:
	451	com_err(whoami, 0, "Failed to start incremental update");
	452	break;
	453	default:
	454	inc_running = 1;
	455	inc_started = now;
	456	}
	457
	458	free_argv(iu->before, iu->beforec);
	459	free_argv(iu->after, iu->afterc);
	460	free(iu->table);
	461	free(iu);
	462
	463	}
	464
	465
	466	/* Called when the current transaction is aborted to throw away any queued
	467	* incremental updates
	468	*/
	469
	470	incremental_flush()
	471	{
	472	struct iupdate *iu;
	473
	474	while (sq_get_data(incremental_sq, &iu)) {
	475	free_argv(iu->before, iu->beforec);
	476	free_argv(iu->after, iu->afterc);
	477	free(iu->table);
	478	free(iu);
	479	}
	480	sq_destroy(incremental_sq);
	481	incremental_sq = sq_create();
	482	}
	483
	484
	485	char **copy_argv(argv, argc)
	486	char **argv;
	487	int argc;
	488	{
	489	char ret = (char )malloc(sizeof(char ) argc);
	490	while (--argc >= 0)
	491	ret[argc] = strsave(strtrim(argv[argc]));
	492	return(ret);
	493	}
	494
	495	free_argv(argv, argc)
	496	char **argv;
	497	int argc;
	498	{
	499	while (--argc >= 0)
	500	free(argv[argc]);
	501	free(argv);
	502	}