1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright (c) 1997-2000 by Sun Microsystems, Inc. 3*0Sstevel@tonic-gate * All rights reserved. 4*0Sstevel@tonic-gate */ 5*0Sstevel@tonic-gate 6*0Sstevel@tonic-gate /* 7*0Sstevel@tonic-gate * Copyright (c) 1996,1999 by Internet Software Consortium. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * Permission to use, copy, modify, and distribute this software for any 10*0Sstevel@tonic-gate * purpose with or without fee is hereby granted, provided that the above 11*0Sstevel@tonic-gate * copyright notice and this permission notice appear in all copies. 12*0Sstevel@tonic-gate * 13*0Sstevel@tonic-gate * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 14*0Sstevel@tonic-gate * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 15*0Sstevel@tonic-gate * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 16*0Sstevel@tonic-gate * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 17*0Sstevel@tonic-gate * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 18*0Sstevel@tonic-gate * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 19*0Sstevel@tonic-gate * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 20*0Sstevel@tonic-gate * SOFTWARE. 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate 23*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate #if !defined(LINT) && !defined(CODECENTER) 26*0Sstevel@tonic-gate static const char rcsid[] = "$Id: gen_pr.c,v 1.12 1999/10/13 16:39:30 vixie Exp $"; 27*0Sstevel@tonic-gate #endif 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* Imports */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #include "port_before.h" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include <sys/types.h> 34*0Sstevel@tonic-gate #include <netinet/in.h> 35*0Sstevel@tonic-gate #include <arpa/nameser.h> 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #include <errno.h> 38*0Sstevel@tonic-gate #include <resolv.h> 39*0Sstevel@tonic-gate #include <stdlib.h> 40*0Sstevel@tonic-gate #include <string.h> 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate #include <isc/memcluster.h> 43*0Sstevel@tonic-gate #include <irs.h> 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include "port_after.h" 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #include "irs_p.h" 48*0Sstevel@tonic-gate #include "gen_p.h" 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate /* Types */ 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate struct pvt { 53*0Sstevel@tonic-gate struct irs_rule * rules; 54*0Sstevel@tonic-gate struct irs_rule * rule; 55*0Sstevel@tonic-gate struct __res_state * res; 56*0Sstevel@tonic-gate void (*free_res)(void *); 57*0Sstevel@tonic-gate }; 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate /* Forward */ 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate static void pr_close(struct irs_pr*); 62*0Sstevel@tonic-gate static struct protoent * pr_next(struct irs_pr *); 63*0Sstevel@tonic-gate static struct protoent * pr_byname(struct irs_pr *, const char *); 64*0Sstevel@tonic-gate static struct protoent * pr_bynumber(struct irs_pr *, int); 65*0Sstevel@tonic-gate static void pr_rewind(struct irs_pr *); 66*0Sstevel@tonic-gate static void pr_minimize(struct irs_pr *); 67*0Sstevel@tonic-gate static struct __res_state * pr_res_get(struct irs_pr *); 68*0Sstevel@tonic-gate static void pr_res_set(struct irs_pr *, 69*0Sstevel@tonic-gate struct __res_state *, 70*0Sstevel@tonic-gate void (*)(void *)); 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate /* Public */ 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate struct irs_pr * 75*0Sstevel@tonic-gate irs_gen_pr(struct irs_acc *this) { 76*0Sstevel@tonic-gate struct gen_p *accpvt = (struct gen_p *)this->private; 77*0Sstevel@tonic-gate struct irs_pr *pr; 78*0Sstevel@tonic-gate struct pvt *pvt; 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate if (!(pr = memget(sizeof *pr))) { 81*0Sstevel@tonic-gate errno = ENOMEM; 82*0Sstevel@tonic-gate return (NULL); 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate memset(pr, 0x5e, sizeof *pr); 85*0Sstevel@tonic-gate if (!(pvt = memget(sizeof *pvt))) { 86*0Sstevel@tonic-gate memput(pr, sizeof *pr); 87*0Sstevel@tonic-gate errno = ENOMEM; 88*0Sstevel@tonic-gate return (NULL); 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate memset(pvt, 0, sizeof *pvt); 91*0Sstevel@tonic-gate pvt->rules = accpvt->map_rules[irs_pr]; 92*0Sstevel@tonic-gate pvt->rule = pvt->rules; 93*0Sstevel@tonic-gate pr->private = pvt; 94*0Sstevel@tonic-gate pr->close = pr_close; 95*0Sstevel@tonic-gate pr->next = pr_next; 96*0Sstevel@tonic-gate pr->byname = pr_byname; 97*0Sstevel@tonic-gate pr->bynumber = pr_bynumber; 98*0Sstevel@tonic-gate pr->rewind = pr_rewind; 99*0Sstevel@tonic-gate pr->minimize = pr_minimize; 100*0Sstevel@tonic-gate pr->res_get = pr_res_get; 101*0Sstevel@tonic-gate pr->res_set = pr_res_set; 102*0Sstevel@tonic-gate return (pr); 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate 105*0Sstevel@tonic-gate /* Methods */ 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate static void 108*0Sstevel@tonic-gate pr_close(struct irs_pr *this) { 109*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate memput(pvt, sizeof *pvt); 112*0Sstevel@tonic-gate memput(this, sizeof *this); 113*0Sstevel@tonic-gate } 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate static struct protoent * 116*0Sstevel@tonic-gate pr_next(struct irs_pr *this) { 117*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 118*0Sstevel@tonic-gate struct protoent *rval; 119*0Sstevel@tonic-gate struct irs_pr *pr; 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate while (pvt->rule) { 122*0Sstevel@tonic-gate pr = pvt->rule->inst->pr; 123*0Sstevel@tonic-gate rval = (*pr->next)(pr); 124*0Sstevel@tonic-gate if (rval) 125*0Sstevel@tonic-gate return (rval); 126*0Sstevel@tonic-gate if (!(pvt->rules->flags & IRS_CONTINUE)) 127*0Sstevel@tonic-gate break; 128*0Sstevel@tonic-gate pvt->rule = pvt->rule->next; 129*0Sstevel@tonic-gate if (pvt->rule) { 130*0Sstevel@tonic-gate pr = pvt->rule->inst->pr; 131*0Sstevel@tonic-gate (*pr->rewind)(pr); 132*0Sstevel@tonic-gate } 133*0Sstevel@tonic-gate } 134*0Sstevel@tonic-gate return (NULL); 135*0Sstevel@tonic-gate } 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate static struct protoent * 138*0Sstevel@tonic-gate pr_byname(struct irs_pr *this, const char *name) { 139*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 140*0Sstevel@tonic-gate struct irs_rule *rule; 141*0Sstevel@tonic-gate struct protoent *rval; 142*0Sstevel@tonic-gate struct irs_pr *pr; 143*0Sstevel@tonic-gate 144*0Sstevel@tonic-gate rval = NULL; 145*0Sstevel@tonic-gate for (rule = pvt->rules; rule; rule = rule->next) { 146*0Sstevel@tonic-gate pr = rule->inst->pr; 147*0Sstevel@tonic-gate rval = (*pr->byname)(pr, name); 148*0Sstevel@tonic-gate if (rval || !(rule->flags & IRS_CONTINUE)) 149*0Sstevel@tonic-gate break; 150*0Sstevel@tonic-gate } 151*0Sstevel@tonic-gate return (rval); 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate static struct protoent * 155*0Sstevel@tonic-gate pr_bynumber(struct irs_pr *this, int proto) { 156*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 157*0Sstevel@tonic-gate struct irs_rule *rule; 158*0Sstevel@tonic-gate struct protoent *rval; 159*0Sstevel@tonic-gate struct irs_pr *pr; 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate rval = NULL; 162*0Sstevel@tonic-gate for (rule = pvt->rules; rule; rule = rule->next) { 163*0Sstevel@tonic-gate pr = rule->inst->pr; 164*0Sstevel@tonic-gate rval = (*pr->bynumber)(pr, proto); 165*0Sstevel@tonic-gate if (rval || !(rule->flags & IRS_CONTINUE)) 166*0Sstevel@tonic-gate break; 167*0Sstevel@tonic-gate } 168*0Sstevel@tonic-gate return (rval); 169*0Sstevel@tonic-gate } 170*0Sstevel@tonic-gate 171*0Sstevel@tonic-gate static void 172*0Sstevel@tonic-gate pr_rewind(struct irs_pr *this) { 173*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 174*0Sstevel@tonic-gate struct irs_pr *pr; 175*0Sstevel@tonic-gate 176*0Sstevel@tonic-gate pvt->rule = pvt->rules; 177*0Sstevel@tonic-gate if (pvt->rule) { 178*0Sstevel@tonic-gate pr = pvt->rule->inst->pr; 179*0Sstevel@tonic-gate (*pr->rewind)(pr); 180*0Sstevel@tonic-gate } 181*0Sstevel@tonic-gate } 182*0Sstevel@tonic-gate 183*0Sstevel@tonic-gate static void 184*0Sstevel@tonic-gate pr_minimize(struct irs_pr *this) { 185*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 186*0Sstevel@tonic-gate struct irs_rule *rule; 187*0Sstevel@tonic-gate 188*0Sstevel@tonic-gate for (rule = pvt->rules; rule != NULL; rule = rule->next) { 189*0Sstevel@tonic-gate struct irs_pr *pr = rule->inst->pr; 190*0Sstevel@tonic-gate 191*0Sstevel@tonic-gate (*pr->minimize)(pr); 192*0Sstevel@tonic-gate } 193*0Sstevel@tonic-gate } 194*0Sstevel@tonic-gate 195*0Sstevel@tonic-gate static struct __res_state * 196*0Sstevel@tonic-gate pr_res_get(struct irs_pr *this) { 197*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 198*0Sstevel@tonic-gate 199*0Sstevel@tonic-gate if (!pvt->res) { 200*0Sstevel@tonic-gate struct __res_state *res; 201*0Sstevel@tonic-gate res = (struct __res_state *)malloc(sizeof *res); 202*0Sstevel@tonic-gate if (!res) { 203*0Sstevel@tonic-gate errno = ENOMEM; 204*0Sstevel@tonic-gate return (NULL); 205*0Sstevel@tonic-gate } 206*0Sstevel@tonic-gate memset(res, 0, sizeof *res); 207*0Sstevel@tonic-gate pr_res_set(this, res, free); 208*0Sstevel@tonic-gate } 209*0Sstevel@tonic-gate 210*0Sstevel@tonic-gate return (pvt->res); 211*0Sstevel@tonic-gate } 212*0Sstevel@tonic-gate 213*0Sstevel@tonic-gate static void 214*0Sstevel@tonic-gate pr_res_set(struct irs_pr *this, struct __res_state *res, 215*0Sstevel@tonic-gate void (*free_res)(void *)) { 216*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 217*0Sstevel@tonic-gate struct irs_rule *rule; 218*0Sstevel@tonic-gate 219*0Sstevel@tonic-gate if (pvt->res && pvt->free_res) { 220*0Sstevel@tonic-gate res_nclose(pvt->res); 221*0Sstevel@tonic-gate (*pvt->free_res)(pvt->res); 222*0Sstevel@tonic-gate } 223*0Sstevel@tonic-gate 224*0Sstevel@tonic-gate pvt->res = res; 225*0Sstevel@tonic-gate pvt->free_res = free_res; 226*0Sstevel@tonic-gate 227*0Sstevel@tonic-gate for (rule = pvt->rules; rule != NULL; rule = rule->next) { 228*0Sstevel@tonic-gate struct irs_pr *pr = rule->inst->pr; 229*0Sstevel@tonic-gate 230*0Sstevel@tonic-gate if (pr->res_set) 231*0Sstevel@tonic-gate (*pr->res_set)(pr, pvt->res, NULL); 232*0Sstevel@tonic-gate } 233*0Sstevel@tonic-gate } 234