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_sv.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 #include <resolv.h> 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #include <errno.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 sv_close(struct irs_sv*); 62*0Sstevel@tonic-gate static struct servent * sv_next(struct irs_sv *); 63*0Sstevel@tonic-gate static struct servent * sv_byname(struct irs_sv *, const char *, 64*0Sstevel@tonic-gate const char *); 65*0Sstevel@tonic-gate static struct servent * sv_byport(struct irs_sv *, int, const char *); 66*0Sstevel@tonic-gate static void sv_rewind(struct irs_sv *); 67*0Sstevel@tonic-gate static void sv_minimize(struct irs_sv *); 68*0Sstevel@tonic-gate static struct __res_state * sv_res_get(struct irs_sv *); 69*0Sstevel@tonic-gate static void sv_res_set(struct irs_sv *, 70*0Sstevel@tonic-gate struct __res_state *, 71*0Sstevel@tonic-gate void (*)(void *)); 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate /* Public */ 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate struct irs_sv * 76*0Sstevel@tonic-gate irs_gen_sv(struct irs_acc *this) { 77*0Sstevel@tonic-gate struct gen_p *accpvt = (struct gen_p *)this->private; 78*0Sstevel@tonic-gate struct irs_sv *sv; 79*0Sstevel@tonic-gate struct pvt *pvt; 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate if (!(sv = memget(sizeof *sv))) { 82*0Sstevel@tonic-gate errno = ENOMEM; 83*0Sstevel@tonic-gate return (NULL); 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate memset(sv, 0x5e, sizeof *sv); 86*0Sstevel@tonic-gate if (!(pvt = memget(sizeof *pvt))) { 87*0Sstevel@tonic-gate memput(sv, sizeof *sv); 88*0Sstevel@tonic-gate errno = ENOMEM; 89*0Sstevel@tonic-gate return (NULL); 90*0Sstevel@tonic-gate } 91*0Sstevel@tonic-gate memset(pvt, 0, sizeof *pvt); 92*0Sstevel@tonic-gate pvt->rules = accpvt->map_rules[irs_sv]; 93*0Sstevel@tonic-gate pvt->rule = pvt->rules; 94*0Sstevel@tonic-gate sv->private = pvt; 95*0Sstevel@tonic-gate sv->close = sv_close; 96*0Sstevel@tonic-gate sv->next = sv_next; 97*0Sstevel@tonic-gate sv->byname = sv_byname; 98*0Sstevel@tonic-gate sv->byport = sv_byport; 99*0Sstevel@tonic-gate sv->rewind = sv_rewind; 100*0Sstevel@tonic-gate sv->minimize = sv_minimize; 101*0Sstevel@tonic-gate sv->res_get = sv_res_get; 102*0Sstevel@tonic-gate sv->res_set = sv_res_set; 103*0Sstevel@tonic-gate return (sv); 104*0Sstevel@tonic-gate } 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate /* Methods */ 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate static void 109*0Sstevel@tonic-gate sv_close(struct irs_sv *this) { 110*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate memput(pvt, sizeof *pvt); 113*0Sstevel@tonic-gate memput(this, sizeof *this); 114*0Sstevel@tonic-gate } 115*0Sstevel@tonic-gate 116*0Sstevel@tonic-gate static struct servent * 117*0Sstevel@tonic-gate sv_next(struct irs_sv *this) { 118*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 119*0Sstevel@tonic-gate struct servent *rval; 120*0Sstevel@tonic-gate struct irs_sv *sv; 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate while (pvt->rule) { 123*0Sstevel@tonic-gate sv = pvt->rule->inst->sv; 124*0Sstevel@tonic-gate rval = (*sv->next)(sv); 125*0Sstevel@tonic-gate if (rval) 126*0Sstevel@tonic-gate return (rval); 127*0Sstevel@tonic-gate if (!(pvt->rule->flags & IRS_CONTINUE)) 128*0Sstevel@tonic-gate break; 129*0Sstevel@tonic-gate pvt->rule = pvt->rule->next; 130*0Sstevel@tonic-gate if (pvt->rule) { 131*0Sstevel@tonic-gate sv = pvt->rule->inst->sv; 132*0Sstevel@tonic-gate (*sv->rewind)(sv); 133*0Sstevel@tonic-gate } 134*0Sstevel@tonic-gate } 135*0Sstevel@tonic-gate return (NULL); 136*0Sstevel@tonic-gate } 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate static struct servent * 139*0Sstevel@tonic-gate sv_byname(struct irs_sv *this, const char *name, const char *proto) { 140*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 141*0Sstevel@tonic-gate struct irs_rule *rule; 142*0Sstevel@tonic-gate struct servent *rval; 143*0Sstevel@tonic-gate struct irs_sv *sv; 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate rval = NULL; 146*0Sstevel@tonic-gate for (rule = pvt->rules; rule; rule = rule->next) { 147*0Sstevel@tonic-gate sv = rule->inst->sv; 148*0Sstevel@tonic-gate rval = (*sv->byname)(sv, name, proto); 149*0Sstevel@tonic-gate if (rval || !(rule->flags & IRS_CONTINUE)) 150*0Sstevel@tonic-gate break; 151*0Sstevel@tonic-gate } 152*0Sstevel@tonic-gate return (rval); 153*0Sstevel@tonic-gate } 154*0Sstevel@tonic-gate 155*0Sstevel@tonic-gate static struct servent * 156*0Sstevel@tonic-gate sv_byport(struct irs_sv *this, int port, const char *proto) { 157*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 158*0Sstevel@tonic-gate struct irs_rule *rule; 159*0Sstevel@tonic-gate struct servent *rval; 160*0Sstevel@tonic-gate struct irs_sv *sv; 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate rval = NULL; 163*0Sstevel@tonic-gate for (rule = pvt->rules; rule; rule = rule->next) { 164*0Sstevel@tonic-gate sv = rule->inst->sv; 165*0Sstevel@tonic-gate rval = (*sv->byport)(sv, port, proto); 166*0Sstevel@tonic-gate if (rval || !(rule->flags & IRS_CONTINUE)) 167*0Sstevel@tonic-gate break; 168*0Sstevel@tonic-gate } 169*0Sstevel@tonic-gate return (rval); 170*0Sstevel@tonic-gate } 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate static void 173*0Sstevel@tonic-gate sv_rewind(struct irs_sv *this) { 174*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 175*0Sstevel@tonic-gate struct irs_sv *sv; 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate pvt->rule = pvt->rules; 178*0Sstevel@tonic-gate if (pvt->rule) { 179*0Sstevel@tonic-gate sv = pvt->rule->inst->sv; 180*0Sstevel@tonic-gate (*sv->rewind)(sv); 181*0Sstevel@tonic-gate } 182*0Sstevel@tonic-gate } 183*0Sstevel@tonic-gate 184*0Sstevel@tonic-gate static void 185*0Sstevel@tonic-gate sv_minimize(struct irs_sv *this) { 186*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 187*0Sstevel@tonic-gate struct irs_rule *rule; 188*0Sstevel@tonic-gate 189*0Sstevel@tonic-gate for (rule = pvt->rules; rule != NULL; rule = rule->next) { 190*0Sstevel@tonic-gate struct irs_sv *sv = rule->inst->sv; 191*0Sstevel@tonic-gate 192*0Sstevel@tonic-gate (*sv->minimize)(sv); 193*0Sstevel@tonic-gate } 194*0Sstevel@tonic-gate } 195*0Sstevel@tonic-gate 196*0Sstevel@tonic-gate static struct __res_state * 197*0Sstevel@tonic-gate sv_res_get(struct irs_sv *this) { 198*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 199*0Sstevel@tonic-gate 200*0Sstevel@tonic-gate if (!pvt->res) { 201*0Sstevel@tonic-gate struct __res_state *res; 202*0Sstevel@tonic-gate res = (struct __res_state *)malloc(sizeof *res); 203*0Sstevel@tonic-gate if (!res) { 204*0Sstevel@tonic-gate errno = ENOMEM; 205*0Sstevel@tonic-gate return (NULL); 206*0Sstevel@tonic-gate } 207*0Sstevel@tonic-gate memset(res, 0, sizeof *res); 208*0Sstevel@tonic-gate sv_res_set(this, res, free); 209*0Sstevel@tonic-gate } 210*0Sstevel@tonic-gate 211*0Sstevel@tonic-gate return (pvt->res); 212*0Sstevel@tonic-gate } 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate static void 215*0Sstevel@tonic-gate sv_res_set(struct irs_sv *this, struct __res_state *res, 216*0Sstevel@tonic-gate void (*free_res)(void *)) { 217*0Sstevel@tonic-gate struct pvt *pvt = (struct pvt *)this->private; 218*0Sstevel@tonic-gate struct irs_rule *rule; 219*0Sstevel@tonic-gate 220*0Sstevel@tonic-gate if (pvt->res && pvt->free_res) { 221*0Sstevel@tonic-gate res_nclose(pvt->res); 222*0Sstevel@tonic-gate (*pvt->free_res)(pvt->res); 223*0Sstevel@tonic-gate } 224*0Sstevel@tonic-gate 225*0Sstevel@tonic-gate pvt->res = res; 226*0Sstevel@tonic-gate pvt->free_res = free_res; 227*0Sstevel@tonic-gate 228*0Sstevel@tonic-gate for (rule = pvt->rules; rule != NULL; rule = rule->next) { 229*0Sstevel@tonic-gate struct irs_sv *sv = rule->inst->sv; 230*0Sstevel@tonic-gate 231*0Sstevel@tonic-gate if (sv->res_set) 232*0Sstevel@tonic-gate (*sv->res_set)(sv, pvt->res, NULL); 233*0Sstevel@tonic-gate } 234*0Sstevel@tonic-gate } 235