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LIB.T：源码内容

21015 SINGLE s1,s2;
21016 {
21017 EXTEND e1,e2;
21018
21019 extend(&s1,&e1,sizeof(SINGLE));
21020 extend(&s2,&e2,sizeof(SINGLE));
21021 /* do a multiply */
21022 mul_ext(&e1,&e2);
21023 compact(&e1,&s1,sizeof(SINGLE));
21024 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/mlf8.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21100 /*
21101 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21102 See the copyright notice in the ACK home directory, in the file "Copyright".
21103 */
21104
21105 /* $Header: mlf8.c,v 1.4 93/01/05 12:05:44 ceriel Exp $ */
21106
21107 /*
21108 * Multiply Double Precision Float (MLF 8)
21109 */
21110
21111 #include "FP_types.h"
21112
21113 void
21114 mlf8(s2,s1)
21115 DOUBLE s1,s2;
21116 {
21117 EXTEND e1,e2;
21118
21119 extend(&s1.d[0],&e1,sizeof(DOUBLE));
.Op 189 src/lib/float/mlf8.c
21120 extend(&s2.d[0],&e2,sizeof(DOUBLE));
21121 /* do a multiply */
21122 mul_ext(&e1,&e2);
21123 compact(&e1,&s1.d[0],sizeof(DOUBLE));
21124 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/mul_ext.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21200 /*
21201 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21202 See the copyright notice in the ACK home directory, in the file "Copyright".
21203 */
21204
21205 /* $Header: mul_ext.c,v 1.6 93/01/05 12:05:51 ceriel Exp $ */
21206
21207 /*
21208 ROUTINE TO MULTIPLY TWO EXTENDED FORMAT NUMBERS
21209 */
21210
21211 # include "FP_bias.h"
21212 # include "FP_trap.h"
21213 # include "FP_types.h"
21214 # include "FP_shift.h"
21215
21216 void
21217 mul_ext(e1,e2)
21218 EXTEND *e1,*e2;
21219 {
21220 register int i,j; /* loop control */
21221 unsigned short mp[4]; /* multiplier */
21222 unsigned short mc[4]; /* multipcand */
21223 unsigned short result[8]; /* result */
21224 register unsigned short *pres;
21225
21226 /* first save the sign (XOR) */
21227 e1->sign ^= e2->sign;
21228
21229 /* compute new exponent */
21230 e1->exp += e2->exp + 1;
21231 /* 128 bit multiply of mantissas */
21232
21233 /* assign unknown long formats */
21234 /* to known unsigned word formats */
21235 mp[0] = e1->m1 >> 16;
21236 mp[1] = (unsigned short) e1->m1;
21237 mp[2] = e1->m2 >> 16;
21238 mp[3] = (unsigned short) e1->m2;
21239 mc[0] = e2->m1 >> 16;
21240 mc[1] = (unsigned short) e2->m1;
21241 mc[2] = e2->m2 >> 16;
21242 mc[3] = (unsigned short) e2->m2;
21243 for (i = 8; i--;) {
21244 result[i] = 0;
.Ep 190 src/lib/float/mul_ext.c
21245 }
21246 /*
21247 * fill registers with their components
21248 */
21249 for(i=4, pres = &result[4];i--;pres--) if (mp[i]) {
21250 unsigned short k = 0;
21251 unsigned long mpi = mp[i];
21252 for(j=4;j--;) {
21253 unsigned long tmp = (unsigned long)pres[j] + k;
21254 if (mc[j]) tmp += mpi * mc[j];
21255 pres[j] = tmp;
21256 k = tmp >> 16;
21257 }
21258 pres[-1] = k;
21259 }
21260 if (! (result[0] & 0x8000)) {
21261 e1->exp--;
21262 for (i = 0; i <= 3; i++) {
21263 result[i] <<= 1;
21264 if (result[i+1]&0x8000) result[i] |= 1;
21265 }
21266 result[4] <<= 1;
21267 }
21268
21269 /*
21270 * combine the registers to a total
21271 */
21272 e1->m1 = ((unsigned long)(result[0]) << 16) + result[1];
21273 e1->m2 = ((unsigned long)(result[2]) << 16) + result[3];
21274 if (result[4] & 0x8000) {
21275 if (++e1->m2 == 0)
21276 if (++e1->m1 == 0) {
21277 e1->m1 = NORMBIT;
21278 e1->exp++;
21279 }
21280 }
21281
21282 /* check for overflow */
21283 if (e1->exp >= EXT_MAX) {
21284 trap(EFOVFL);
21285 /* if caught */
21286 /* return signed infinity */
21287 e1->exp = EXT_MAX;
21288 infinity: e1->m1 = e1->m2 =0L;
21289 return;
21290 }
21291 /* check for underflow */
21292 if (e1->exp < EXT_MIN) {
21293 trap(EFUNFL);
21294 e1->exp = EXT_MIN;
21295 goto infinity;
21296 }
21297 }
.Op 191 src/lib/float/ngf4.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/ngf4.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21300 /*
21301 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21302 See the copyright notice in the ACK home directory, in the file "Copyright".
21303 */
21304
21305 /* $Header: ngf4.c,v 1.7 93/01/05 12:05:57 ceriel Exp $ */
21306
21307 /*
21308 NEGATE A FLOATING POINT (NGF 4)
21309 */
21310 /********************************************************/
21311
21312 #include "FP_types.h"
21313 #include "get_put.h"
21314
21315 #define OFF ((FL_MSW_AT_LOW_ADDRESS ? 0 : 2) + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
21316 void
21317 ngf4(f)
21318 SINGLE f;
21319 {
21320 unsigned char *p;
21321
21322 if (f != (SINGLE) 0) {
21323 p = (unsigned char *) &f + OFF;
21324 *p ^= 0x80;
21325 }
21326 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/ngf8.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21400 /*
21401 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21402 See the copyright notice in the ACK home directory, in the file "Copyright".
21403 */
21404
21405 /* $Header: ngf8.c,v 1.8 93/01/05 12:06:05 ceriel Exp $ */
21406
21407 /*
21408 NEGATE A FLOATING POINT (NGF 8)
21409 */
21410 /********************************************************/
21411
21412 #include "FP_types.h"
21413 #include "get_put.h"
21414
21415 #define OFF ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
21416
21417 void
21418 ngf8(f)
21419 DOUBLE f;
.Ep 192 src/lib/float/ngf8.c
21420 {
21421 unsigned char *p;
21422
21423 if (f.d[0] != 0 || f.d[1] != 0) {
21424 p = (unsigned char *) &f + OFF;
21425 *p ^= 0x80;
21426 }
21427 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/nrm_ext.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21500 /*
21501 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21502 See the copyright notice in the ACK home directory, in the file "Copyright".
21503 */
21504
21505 /* $Header: nrm_ext.c,v 1.5 93/01/05 12:06:11 ceriel Exp $ */
21506
21507 /********************************************************/
21508 /*
21509 NORMALIZE an EXTENDED FORMAT NUMBER
21510 */
21511 /********************************************************/
21512
21513 #include "FP_shift.h"
21514 #include "FP_types.h"
21515
21516 void
21517 nrm_ext(e1)
21518 EXTEND *e1;
21519 {
21520 /* we assume that the mantissa != 0 */
21521 /* if it is then just return */
21522 /* to let it be a problem elsewhere */
21523 /* THAT IS, The exponent is not set to */
21524 /* zero. If we don't test here an */
21525 /* infinite loop is generated when */
21526 /* mantissa is zero */
21527
21528 if ((e1->m1 | e1->m2) == 0L)
21529 return;
21530
21531 /* if top word is zero mov low word */
21532 /* to top word, adjust exponent value */
21533 if (e1->m1 == 0L) {
21534 e1->m1 = e1->m2;
21535 e1->m2 = 0L;
21536 e1->exp -= 32;
21537 }
21538 if ((e1->m1 & NORMBIT) == 0) {
21539 unsigned long l = ((unsigned long)NORMBIT >> 1);
21540 int cnt = -1;
21541
21542 while (! (l & e1->m1)) {
21543 l >>= 1;
21544 cnt--;
.Op 193 src/lib/float/nrm_ext.c
21545 }
21546 e1->exp += cnt;
21547 b64_sft(&(e1->mantissa), cnt);
21548 }
21549 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/sbf4.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21600 /*
21601 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21602 See the copyright notice in the ACK home directory, in the file "Copyright".
21603 */
21604
21605 /* $Header: sbf4.c,v 1.8 93/01/05 12:06:16 ceriel Exp $ */
21606
21607 /*
21608 SUBTRACT TWO FLOATS - SINGLE Precision (SBF 4)
21609 */
21610
21611 #include "FP_types.h"
21612
21613 void
21614 sbf4(s2,s1)
21615 SINGLE s1,s2;
21616 {
21617 EXTEND e1,e2;
21618
21619 if (s2 == (SINGLE) 0) {
21620 return;
21621 }
21622 extend(&s1,&e1,sizeof(SINGLE));
21623 extend(&s2,&e2,sizeof(SINGLE));
21624 sub_ext(&e1,&e2);
21625 compact(&e1,&s1,sizeof(SINGLE));
21626 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/sbf8.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21700 /*
21701 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21702 See the copyright notice in the ACK home directory, in the file "Copyright".
21703 */
21704
21705 /* $Header: sbf8.c,v 1.8 93/01/05 12:06:22 ceriel Exp $ */
21706
21707 /*
21708 SUBTRACT TWO FLOATS - DOUBLE Precision (SBF 8)
21709 */
.Ep 194 src/lib/float/sbf8.c
21710
21711 #include "FP_types.h"
21712
21713 void
21714 sbf8(s2,s1)
21715 DOUBLE s1,s2;
21716 {
21717 EXTEND e1, e2;
21718
21719 if (s2.d[0] == 0 && s2.d[1] == 0) {
21720 return;
21721 }
21722 extend(&s1.d[0],&e1,sizeof(DOUBLE));
21723 extend(&s2.d[0],&e2,sizeof(DOUBLE));
21724 sub_ext(&e1,&e2);
21725 compact(&e1,&s1.d[0],sizeof(DOUBLE));
21726 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/sft_ext.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21800 /*
21801 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21802 See the copyright notice in the ACK home directory, in the file "Copyright".
21803 */
21804
21805 /* $Header: sft_ext.c,v 1.5 93/01/05 12:06:28 ceriel Exp $ */
21806
21807 /*
21808 SHIFT TWO EXTENDED NUMBERS INTO PROPER
21809 ALIGNMENT FOR ADDITION (exponents are equal)
21810 Numbers should not be zero on entry.
21811 */
21812
21813 #include "FP_types.h"
21814
21815 void
21816 sft_ext(e1,e2)
21817 EXTEND *e1,*e2;
21818 {
21819 register EXTEND *s;
21820 register int diff;
21821
21822 diff = e1->exp - e2->exp;
21823
21824 if (!diff)
21825 return; /* exponents are equal */
21826
21827 if (diff < 0) { /* e2 is larger */
21828 /* shift e1 */
21829 diff = -diff;
21830 s = e1;
21831 }
21832 else /* e1 is larger */
21833 /* shift e2 */
21834 s = e2;
.Op 195 src/lib/float/sft_ext.c
21835
21836 s->exp += diff;
21837 b64_sft(&(s->mantissa), diff);
21838 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/shifter.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
21900 /*
21901 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
21902 See the copyright notice in the ACK home directory, in the file "Copyright".
21903 */
21904
21905 /* $Header: shifter.c,v 1.6 93/01/05 12:06:34 ceriel Exp $ */
21906
21907 # include "FP_types.h"
21908
21909 void
21910 b64_sft(e1,n)
21911 B64 *e1;
21912 int n;
21913 {
21914 if (n > 0) {
21915 if (n > 63) {
21916 e1->l_32 = 0;
21917 e1->h_32 = 0;
21918 return;
21919 }
21920 if (n >= 32) {
21921 e1->l_32 = e1->h_32;
21922 e1->h_32 = 0;
21923 n -= 32;
21924 }
21925 if (n > 0) {
21926 e1->l_32 >>= n;
21927 if (e1->h_32 != 0) {
21928 e1->l_32 |= (e1->h_32 << (32 - n));
21929 e1->h_32 >>= n;
21930 }
21931 }
21932 return;
21933 }
21934 n = -n;
21935 if (n > 0) {
21936 if (n > 63) {
21937 e1->l_32 = 0;
21938 e1->h_32 = 0;
21939 return;
21940 }
21941 if (n >= 32) {
21942 e1->h_32 = e1->l_32;
21943 e1->l_32 = 0;
21944 n -= 32;
21945 }
21946 if (n > 0) {
21947 e1->h_32 <<= n;
21948 if (e1->l_32 != 0) {
21949 e1->h_32 |= (e1->l_32 >> (32 - n));
.Ep 196 src/lib/float/shifter.c
21950 e1->l_32 <<= n;
21951 }
21952 }
21953 }
21954 }
21956 void
21957 b64_lsft(e1)
21958 B64 *e1;
21959 {
21960 /* shift left 1 bit */
21961 e1->h_32 <<= 1;
21962 if (e1->l_32 & 0x80000000L) e1->h_32 |= 1;
21963 e1->l_32 <<= 1;
21964 }
21966 void
21967 b64_rsft(e1)
21968 B64 *e1;
21969 {
21970 /* shift right 1 bit */
21971 e1->l_32 >>= 1;
21972 if (e1->h_32 & 1) e1->l_32 |= 0x80000000L;
21973 e1->h_32 >>= 1;
21974 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/sub_ext.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22000 /*
22001 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
22002 See the copyright notice in the ACK home directory, in the file "Copyright".
22003 */
22004
22005 /* $Header: sub_ext.c,v 1.6 93/01/05 12:06:40 ceriel Exp $ */
22006
22007 /*
22008 SUBTRACT 2 EXTENDED FORMAT NUMBERS
22009 */
22010
22011 #include "FP_types.h"
22012
22013 void
22014 sub_ext(e1,e2)
22015 EXTEND *e1,*e2;
22016 {
22017 if ((e2->m1 | e2->m2) == 0L) {
22018 return;
22019 }
22020 if ((e1->m1 | e1->m2) == 0L) {
22021 *e1 = *e2;
22022 e1->sign = e2->sign ? 0 : 1;
22023 return;
22024 }
.Op 197 src/lib/float/sub_ext.c
22025 sft_ext(e1, e2);
22026 if (e1->sign != e2->sign) {
22027 /* e1 - e2 = e1 + (-e2) */
22028 if (b64_add(&e1->mantissa,&e2->mantissa)) { /* addition carry */
22029 b64_rsft(&e1->mantissa); /* shift mantissa one bit RIGHT */
22030 e1->m1 |= 0x80000000L; /* set max bit */
22031 e1->exp++; /* increase the exponent */
22032 }
22033 }
22034 else if (e2->m1 > e1->m1 ||
22035 (e2->m1 == e1->m1 && e2->m2 > e1->m2)) {
22036 /* abs(e2) > abs(e1) */
22037 if (e1->m2 > e2->m2) {
22038 e2->m1 -= 1; /* carry in */
22039 }
22040 e2->m1 -= e1->m1;
22041 e2->m2 -= e1->m2;
22042 *e1 = *e2;
22043 e1->sign = e2->sign ? 0 : 1;
22044 }
22045 else {
22046 if (e2->m2 > e1->m2)
22047 e1->m1 -= 1; /* carry in */
22048 e1->m1 -= e2->m1;
22049 e1->m2 -= e2->m2;
22050 }
22051 nrm_ext(e1);
22052 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/zrf4.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22100 /*
22101 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
22102 See the copyright notice in the ACK home directory, in the file "Copyright".
22103 */
22104
22105 /* $Header: zrf4.c,v 1.5 93/01/05 12:06:46 ceriel Exp $ */
22106
22107 /*
22108 return a zero float (ZRF 4)
22109 */
22110
22111 #include "FP_types.h"
22112
22113 void
22114 zrf4(l)
22115 SINGLE *l;
22116 {
22117 *l = 0L;
22118 }
.Ep 198 src/lib/float/zrf8.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/zrf8.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22200 /*
22201 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
22202 See the copyright notice in the ACK home directory, in the file "Copyright".
22203 */
22204
22205 /* $Header: zrf8.c,v 1.4 93/01/05 12:06:52 ceriel Exp $ */
22206
22207 /*
22208 return a zero double (ZRF 8)
22209 */
22210
22211 #include "FP_types.h"
22212
22213 void
22214 zrf8(z)
22215 DOUBLE *z;
22216 {
22217
22218 z->d[0] = 0L;
22219 z->d[1] = 0L;
22220 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/zrf_ext.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22300 /*
22301 (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
22302 See the copyright notice in the ACK home directory, in the file "Copyright".
22303 */
22304
22305 /* $Header: zrf_ext.c,v 1.5 93/01/05 12:06:58 ceriel Exp $ */
22306
22307 /*
22308 ZERO and return EXTEND FORMAT FLOAT
22309 */
22310
22311 #include "FP_types.h"
22312
22313 void
22314 zrf_ext(e)
22315 EXTEND *e;
22316 {
22317 e->m1 = 0;
22318 e->m2 = 0;
22319 e->exp = 0;
22320 e->sign = 0;
22321 }
.Op 199 src/lib/float/fptrp.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/float/fptrp.s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22400 #
22401 .sect .text; .sect .rom; .sect .data; .sect .bss
22402 .define __fptrp
22403 .sect .text
22404 __fptrp:
22405 #if __i386
22406 push ebp
22407 mov ebp, esp
22408 mov eax, 8(bp)
22409 call .Xtrp
22410 leave
22411 ret
22412 #else /* i86 */
22413 push bp
22414 mov bp, sp
22415 mov ax, 4(bp)
22416 call .Xtrp
22417 jmp .cret
22418 #endif
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/fphook/fltpr.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22500 #include <stdio.h>
22501 #include <stdlib.h>
22502 #include "../stdio/loc_incl.h"
22503
22504 int _fp_hook = 1;
22505
22506 char *
22507 _f_print(va_list *ap, int flags, char *s, char c, int precision)
22508 {
22509 fprintf(stderr,"cannot print floating pointn");
22510 exit(EXIT_FAILURE);
22511 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/fphook/fphook.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22600 /*
22601 * fltpr.c - print floating point numbers
22602 */
22603 /* $Header: fltpr.c,v 1.4 90/02/27 16:47:40 eck Exp $ */
22604
22605 #ifndef NOFLOAT
22606 #include <string.h>
22607 #include <stdarg.h>
22608 #include "../stdio/loc_incl.h"
22609 int _fp_hook = 1;
.Ep 200 src/lib/fphook/fphook.c
22610
22611 static char *
22612 _pfloat(long double r, register char *s, int n, int flags)
22613 {
22614 register char *s1;
22615 int sign, dp;
22616 register int i;
22617
22618 s1 = _fcvt(r, n, &dp, &sign);
22619 if (sign)
22620 *s++ = '-';
22621 else if (flags & FL_SIGN)
22622 *s++ = '+';
22623 else if (flags & FL_SPACE)
22624 *s++ = ' ';
22625
22626 if (dp<=0)
22627 *s++ = '0';
22628 for (i=dp; i>0; i--)
22629 if (*s1) *s++ = *s1++;
22630 else *s++ = '0';
22631 if (((i=n) > 0) || (flags & FL_ALT))
22632 *s++ = '.';
22633 while (++dp <= 0) {
22634 if (--i<0)
22635 break;
22636 *s++ = '0';
22637 }
22638 while (--i >= 0)
22639 if (*s1) *s++ = *s1++;
22640 else *s++ = '0';
22641 return s;
22642 }
22644 static char *
22645 _pscien(long double r, register char *s, int n, int flags)
22646 {
22647 int sign, dp;
22648 register char *s1;
22649
22650 s1 = _ecvt(r, n + 1, &dp, &sign);
22651 if (sign)
22652 *s++ = '-';
22653 else if (flags & FL_SIGN)
22654 *s++ = '+';
22655 else if (flags & FL_SPACE)
22656 *s++ = ' ';
22657
22658 *s++ = *s1++;
22659 if ((n > 0) || (flags & FL_ALT))
22660 *s++ = '.';
22661 while (--n >= 0)
22662 if (*s1) *s++ = *s1++;
22663 else *s++ = '0';
22664 *s++ = 'e';
22665 if ( r != 0 ) --dp ;
22666 if ( dp<0 ) {
22667 *s++ = '-' ; dp= -dp ;
22668 } else {
22669 *s++ = '+' ;
.Op 201 src/lib/fphook/fphook.c
22670 }
22671 if (dp >= 100) {
22672 *s++ = '0' + (dp / 100);
22673 dp %= 100;
22674 }
22675 *s++ = '0' + (dp/10);
22676 *s++ = '0' + (dp%10);
22677 return s;
22678 }
22680 #define NDIGINEXP(exp) (((exp) >= 100 || (exp) <= -100) ? 3 : 2)
22681 #define LOW_EXP -4
22682 #define USE_EXP(exp, ndigits) (((exp) < LOW_EXP + 1) || (exp >= ndigits + 1))
22683
22684 static char *
22685 _gcvt(long double value, int ndigit, char *s, int flags)
22686 {
22687 int sign, dp;
22688 register char *s1, *s2;
22689 register int i;
22690 register int nndigit = ndigit;
22691
22692 s1 = _ecvt(value, ndigit, &dp, &sign);
22693 s2 = s;
22694 if (sign) *s2++ = '-';
22695 else if (flags & FL_SIGN)
22696 *s2++ = '+';
22697 else if (flags & FL_SPACE)
22698 *s2++ = ' ';
22699
22700 if (!(flags & FL_ALT))
22701 for (i = nndigit - 1; i > 0 && s1[i] == '0'; i--)
22702 nndigit--;
22703
22704 if (USE_EXP(dp,ndigit)) {
22705 /* Use E format */
22706 dp--;
22707 *s2++ = *s1++;
22708 if ((nndigit > 1) || (flags & FL_ALT)) *s2++ = '.';
22709 while (--nndigit > 0) *s2++ = *s1++;
22710 *s2++ = 'e';
22711 if (dp < 0) {
22712 *s2++ = '-';
22713 dp = -dp;
22714 }
22715 else *s2++ = '+';
22716 s2 += NDIGINEXP(dp);
22717 *s2 = 0;
22718 for (i = NDIGINEXP(dp); i > 0; i--) {
22719 *--s2 = dp % 10 + '0';
22720 dp /= 10;
22721 }
22722 return s;
22723 }
22724 /* Use f format */
22725 if (dp <= 0) {
22726 if (*s1 != '0') {
22727 /* otherwise the whole number is 0 */
22728 *s2++ = '0';
22729 *s2++ = '.';
.Ep 202 src/lib/fphook/fphook.c
22730 }
22731 while (dp < 0) {
22732 dp++;
22733 *s2++ = '0';
22734 }
22735 }
22736 for (i = 1; i <= nndigit; i++) {
22737 *s2++ = *s1++;
22738 if (i == dp) *s2++ = '.';
22739 }
22740 if (i <= dp) {
22741 while (i++ <= dp) *s2++ = '0';
22742 *s2++ = '.';
22743 }
22744 if ((s2[-1]=='.') && !(flags & FL_ALT)) s2--;
22745 *s2 = '';
22746 return s;
22747 }
22749 char *
22750 _f_print(va_list *ap, int flags, char *s, char c, int precision)
22751 {
22752 register char *old_s = s;
22753 long double ld_val;
22754
22755 if (flags & FL_LONGDOUBLE) ld_val = va_arg(*ap, long double);
22756 else ld_val = (long double) va_arg(*ap, double);
22757
22758 switch(c) {
22759 case 'f':
22760 s = _pfloat(ld_val, s, precision, flags);
22761 break;
22762 case 'e':
22763 case 'E':
22764 s = _pscien(ld_val, s, precision , flags);
22765 break;
22766 case 'g':
22767 case 'G':
22768 s = _gcvt(ld_val, precision, s, flags);
22769 s += strlen(s);
22770 break;
22771 }
22772 if ( c == 'E' || c == 'G') {
22773 while (*old_s && *old_s != 'e') old_s++;
22774 if (*old_s == 'e') *old_s = 'E';
22775 }
22776 return s;
22777 }
22778 #endif /* NOFLOAT */
22779 /* $Header: strtod.c,v 1.3 90/09/07 11:00:24 eck Exp $ */
22780
22781 #include <stdlib.h>
22782 #include "../ansi/ext_fmt.h"
22783
22784 void _str_ext_cvt(const char *s, char **ss, struct EXTEND *e);
22785 double _ext_dbl_cvt(struct EXTEND *e);
22786
22787 double
22788 strtod(const char *p, char **pp)
22789 {
.Op 203 src/lib/fphook/fphook.c
22790 struct EXTEND e;
22791
22792 _str_ext_cvt(p, pp, &e);
22793 return _ext_dbl_cvt(&e);
22794 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/fphook/strtod.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22800 #include <stdio.h>
22801 #include <stdlib.h>
22802
22803 double
22804 strtod(const char *p, char **pp)
22805 {
22806 fprintf(stderr,"cannot print floating pointn");
22807 exit(EXIT_FAILURE);
22808 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/ether.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
22900 /* $Id: ether.h,v 2.2 89/10/23 15:42:19 dupuy Exp $ */
22901
22902 /* Interface definitions for ethernet access library */
22903
22904 typedef union etheraddr
22905 {
22906 unsigned char bytes[6]; /* byteorder safe initialization */
22907 unsigned short shorts[3]; /* force 2-byte alignment */
22908 }
22909 ether_addr;
22910
22911 typedef struct etherpacket
22912 {
22913 ether_addr dest;
22914 ether_addr src;
22915 unsigned char type[2]; /* in network byte order! */
22916 unsigned short pktlen; /* length of pktbuf ONLY */
22917 char *pktbuf;
22918 }
22919 ether_packet;
22920
22921 typedef struct ethervec
22922 {
22923 ether_addr dest;
22924 ether_addr src;
22925 unsigned char type[2]; /* in network byte order! */
22926 unsigned short iovcnt; /* number of iovec to use */
22927 struct iovec *iov; /* ptr to array of iovec */
22928 }
22929 ether_vec;
.Ep 204 src/lib/ip/ether.h
22930
22931 #ifndef __ETHER_BCAST_ADDR__
22932 extern ether_addr ether_bcast_addr;
22933 #endif
22934
22935 #ifdef __STDC__
22936
22937 int ether_open (char *name, unsigned type, ether_addr * address);
22938
22939 ether_addr *ether_address (int fd, ether_addr * address);
22940
22941 ether_addr *ether_intfaddr (char *intf, ether_addr * address);
22942
22943 char **ether_interfaces (void);
22944
22945 int ether_write (int fd, ether_packet * packet);
22946
22947 int ether_writev (int fd, ether_vec * packet);
22948
22949 int ether_read (int fd, ether_packet * packet);
22950
22951 int ether_readv (int fd, ether_vec * packet);
22952
22953 int ether_blocking (int fd, int state);
22954
22955 int ether_send_self (int fd);
22956
22957 int ether_mcast_self (int fd);
22958
22959 int ether_bcast_self (int fd);
22960
22961 char *ether_ntoa (ether_addr *);
22962
22963 ether_addr *ether_aton (char *);
22964
22965 #ifdef __GNUC__
22966
22967 /*
22968 * Avoid stupid warnings if structs aren't defined
22969 */
22970
22971 typedef struct in_addr *_ether_NoNsEnSe;
22972 typedef struct hostent *_ether_nOnSeNsE;
22973
22974 #endif
22975
22976 char *ether_e2a (ether_addr *, char *);
22977
22978 ether_addr *ether_a2e (char *, ether_addr *);
22979
22980 struct in_addr *ether_e2ip (ether_addr *, struct in_addr *);
22981
22982 ether_addr *ether_ip2e (struct in_addr *, ether_addr *);
22983
22984 char *ether_e2host (ether_addr *, char *);
22985
22986 ether_addr *ether_host2e (char *, ether_addr *);
22987
22988 ether_addr *ether_hostent2e (struct hostent *, ether_addr *);
22989
.Op 205 src/lib/ip/ether.h
22990 #else
22991
22992 int ether_open ();
22993 ether_addr *ether_address ();
22994 ether_addr *ether_intfaddr ();
22995 char **ether_interfaces ();
22996 int ether_write ();
22997 int ether_writev ();
22998 int ether_read ();
22999 int ether_readv ();
23000 int ether_blocking ();
23001 int ether_send_self ();
23002 int ether_mcast_self ();
23003 int ether_bcast_self ();
23004
23005 char *ether_ntoa ();
23006 ether_addr *ether_aton ();
23007 char *ether_e2a ();
23008 ether_addr *ether_a2e ();
23009 struct in_addr *ether_e2ip ();
23010 ether_addr *ether_ip2e ();
23011 char *ether_e2host ();
23012 ether_addr *ether_host2e ();
23013 ether_addr *ether_hostent2e ();
23014
23015 #endif
23016
23017 #undef ether_cmp /* lose def from netinet/if_ether.h */
23018
23019 #define ether_cmp(addr1,addr2)
23020 ((addr1)->shorts[0] != (addr2)->shorts[0]
23021 || (addr1)->shorts[1] != (addr2)->shorts[1]
23022 || (addr1)->shorts[2] != (addr2)->shorts[2])
23023
23024 #define ETHERSTRLEN 18 /* max length of "xx:xx:xx:xx:xx:xx" */
23025
23026 #ifdef NOFILE /* i.e. we have included sys/param.h */
23027 #ifndef MAXHOSTNAMELEN /* but MAXHOSTNAMELEN still isnt set */
23028 #define MAXHOSTNAMELEN 64
23029 #endif
23030 #endif
23031
23032 /* should be defined in terms of ether_packet struct; need offsetof() macro */
23033
23034 #define ETHER_DST 0
23035 #define ETHER_SRC 6
23036 #define ETHER_TYPE 12
23037 #define ETHER_PKT 14
23038 #define ETHER_MIN 46
23039 #define ETHER_MAX 1500
23040
23041 #define ETHER_MINTYPE 0x5DD /* lowest protocol not valid IEEE802 */
23042 #define ETHER_MAXTYPE 0xFFFF /* largest possible protocol */
23043
23044 #define ETHER_MCAST(addr) (((unsigned char *) (addr))[0] & 0x01)
23045
23046 #ifdef NT_ALLTYPES
23047 #define ETHER_ALLTYPES NT_ALLTYPES
23048 #else
23049 #define ETHER_ALLTYPES ((unsigned) -1)
.Ep 206 src/lib/ip/ether.h
23050 #endif
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/domainname.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23100 /*
23101 domainname.c
23102 */
23103
23104 #include <stdio.h>
23105 #include <string.h>
23106 #include <net/netlib.h>
23107
23108 int getdomainname(domain, size)
23109 char *domain;
23110 size_t size;
23111 {
23112 FILE *domainfile;
23113 char *line;
23114
23115 domainfile= fopen("/etc/domainname", "r");
23116 if (!domainfile)
23117 {
23118 return -1;
23119 }
23120
23121 line= fgets(domain, size, domainfile);
23122 fclose(domainfile);
23123 if (!line)
23124 return -1;
23125 line= strchr(domain, 'n');
23126 if (line)
23127 *line= '';
23128 return 0;
23129 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/ether_line.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23200 /*
23201 ** ETHER_LINE
23202 **
23203 ** This routine parses the array pointed to by "line" (which should be
23204 ** from a file in the format of /etc/ethers) and returns in "eaddr" the
23205 ** ethernet address at the start of the line and the corresponding host
23206 ** name in "hostname". It assumes either tabs or spaces separate the
23207 ** two. The buffer pointed to by "hostname" must be big enough to hold
23208 ** the host name plus a NULL byte.
23209 ** The function returns 0 on success and 1 on failure.
.Op 207 src/lib/ip/ether_line.c
23210 ** Arguments are assumed sensible. Null pointers will probably cause
23211 ** exceptions.
23212 ** Author: Gregory J. Sharp, July 1990
23213 ** Adapted to MINIX: Philip Homburg, May 1992
23214 */
23215
23216 #include <sys/types.h>
23217 #include <ctype.h>
23218 #include <stdlib.h>
23219 #include <net/gen/ether.h>
23220 #include <net/gen/if_ether.h>
23221
23222 int
23223 ether_line(line, eaddr, hostname)
23224 char * line;
23225 struct ether_addr * eaddr;
23226 char * hostname;
23227 {
23228 register int i;
23229 register unsigned long val;
23230
23231 /* skip leading white space */
23232 while (*line != 'n' && (*line == ' ' || *line == 't'))
23233 line++;
23234
23235 /* read the ethernet address */
23236 for (i = 0; i < 5; i++)
23237 {
23238 val = (unsigned long) strtol(line, &line, 16);
23239 if (val > 255 || *line++ != ':')
23240 return 1;
23241 eaddr->ea_addr[i] = val & 0xff;
23242 }
23243 val = (unsigned long) strtol(line, &line, 16);
23244 if (val > 255 || (*line != ' ' && *line != 't'))
23245 return 1;
23246 eaddr->ea_addr[i] = val & 0xff;
23247
23248 /* skip leading white space */
23249 while (*line != 'n' && (*line == ' ' || *line == 't'))
23250 line++;
23251
23252 /* read in the hostname */
23253 while (!isspace(*line))
23254 *hostname++ = *line++;
23255 *hostname = '';
23256 return 0;
23257 }
.Ep 208 src/lib/ip/ethera2n.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/ethera2n.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23300 /*
23301 ethera2n.c
23302
23303 Convert an ASCII string with an ethernet address into a struct ether_addr.
23304
23305 Created: Nov 17, 1992 by Philip Homburg
23306 */
23307
23308 #include <sys/types.h>
23309 #include <stdlib.h>
23310 #include <net/netlib.h>
23311 #include <net/gen/ether.h>
23312 #include <net/gen/if_ether.h>
23313
23314 struct ether_addr *ether_aton(s)
23315 char *s;
23316 {
23317 static struct ether_addr ea;
23318
23319 int i;
23320 long v;
23321 char *check;
23322
23323 if (s == NULL)
23324 return NULL;
23325
23326 for (i=0; i<6; i++)
23327 {
23328 v= strtol(s, &check, 16);
23329 if (v<0 || v>255)
23330 return NULL;
23331 if ((i<5 && check[0] != ':') || (i == 5 && check[0] != ''))
23332 return NULL;
23333 ea.ea_addr[i]= v;
23334 s= check+1;
23335 }
23336 return &ea;
23337 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/ethere2a.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23400 /* $Id: ethere2a.c,v 2.1 89/10/23 15:42:28 dupuy Exp $ */
23401 /* This file was part of the etherlib package. */
23402
23403 #include <stdio.h>
23404
23405 #ifdef _MINIX
23406 #include <sys/types.h>
23407 #include <stdlib.h>
23408
23409 #include <net/gen/ether.h>
.Op 209 src/lib/ip/ethere2a.c
23410 #include <net/gen/if_ether.h>
23411
23412 #define ETHERSTRLEN 18 /* max length of "xx:xx:xx:xx:xx:xx" */
23413 #define ether_addr ether_addr_t
23414 #define bytes ea_addr
23415 char *ether_e2a _ARGS(( ether_addr_t *a, char *e ));
23416 #else
23417 #include "libether.h"
23418 #endif
23419
23420 char *
23421 ether_e2a (addr, estring)
23422 ether_addr *addr;
23423 char *estring;
23424 {
23425 #ifdef lint
23426 char *sprintf ();
23427 #endif
23428 if (estring == NULL)
23429 estring = (char *) malloc (ETHERSTRLEN);
23430
23431 if (estring != NULL)
23432 (void) sprintf (estring, "%x:%x:%x:%x:%x:%x",
23433 addr->bytes[0], addr->bytes[1], addr->bytes[2],
23434 addr->bytes[3], addr->bytes[4], addr->bytes[5]);
23435 return (estring);
23436 }
23438 #ifndef ETHERDB
23439
23440 char *
23441 ether_ntoa (addr)
23442 ether_addr *addr;
23443 {
23444 static char estring[ETHERSTRLEN];
23445
23446 return (ether_e2a (addr, estring));
23447 }
23449 #endif
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/etherh2n.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23500 /*
23501 etherh2n.c
23502
23503 Created: May 20, 1992 by Philip Homburg
23504 */
23505
23506 #include <stdio.h>
23507 #include <string.h>
23508 #include <net/gen/if_ether.h>
23509
.Ep 210 src/lib/ip/etherh2n.c
23510 int
23511 ether_hostton(hostname, e)
23512 char *hostname;
23513 struct ether_addr *e;
23514 {
23515 FILE *etherf;
23516 char b[256], hn[256];
23517
23518 etherf= fopen(_PATH_ETHERS, "r");
23519 if (etherf == NULL)
23520 return 1;
23521
23522 while(fgets(b, sizeof(b), etherf) != NULL)
23523 {
23524 if (ether_line(b, e, hn) == 0 && strcmp(hn, hostname) == 0)
23525 {
23526 fclose(etherf);
23527 return 0;
23528 }
23529 }
23530 fclose(etherf);
23531 return 1;
23532 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/ethern2h.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23600 /*
23601 ethern2h.c
23602
23603 Created: Nov 12, 1992 by Philip Homburg
23604 */
23605
23606 #include <sys/types.h>
23607 #include <stdio.h>
23608 #include <string.h>
23609 #include <net/gen/ether.h>
23610 #include <net/gen/if_ether.h>
23611
23612 int
23613 ether_ntohost(hostname, e)
23614 char *hostname;
23615 struct ether_addr *e;
23616 {
23617 FILE *etherf;
23618 char b[256];
23619 struct ether_addr e_tmp;
23620
23621 etherf= fopen(_PATH_ETHERS, "r");
23622 if (etherf == NULL)
23623 return 1;
23624
23625 while(fgets(b, sizeof(b), etherf) != NULL)
23626 {
23627 if (ether_line(b, &e_tmp, hostname) == 0 &&
23628 memcmp(&e_tmp, e, sizeof(e_tmp)) == 0)
23629 {
.Op 211 src/lib/ip/ethern2h.c
23630 fclose(etherf);
23631 return 0;
23632 }
23633 }
23634 fclose(etherf);
23635 return 1;
23636 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/getdomain.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23700 /* getdomainname() Author: Kees J. Bot
23701 * 2 Dec 1994
23702 */
23703 #define nil 0
23704 #include <sys/types.h>
23705 #include <sys/utsname.h>
23706 #include <unistd.h>
23707 #include <string.h>
23708
23709 int getdomainname(char *domain, size_t size)
23710 {
23711 char nodename[256];
23712 char *dot;
23713
23714 if (gethostname(nodename, sizeof(nodename)) < 0)
23715 return -1;
23716 nodename[sizeof(nodename)-1]= 0;
23717 if ((dot= strchr(nodename, '.')) == nil) dot= ".";
23718
23719 strncpy(domain, dot+1, size);
23720 if (size > 0) domain[size-1]= 0;
23721 return 0;
23722 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/gethnmadr.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
23800 /*
23801 * Copyright (c) 1985, 1988 Regents of the University of California.
23803 *
23804 * Redistribution and use in source and binary forms are permitted
23805 * provided that: (1) source distributions retain this entire copyright
23806 * notice and comment, and (2) distributions including binaries display
23807 * the following acknowledgement: ``This product includes software
23808 * developed by the University of California, Berkeley and its contributors''
23809 * in the documentation or other materials provided with the distribution
23810 * and in all advertising materials mentioning features or use of this
23811 * software. Neither the name of the University nor the names of its
23812 * contributors may be used to endorse or promote products derived
23813 * from this software without specific prior written permission.
23814 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
.Ep 212 src/lib/ip/gethnmadr.c
23815 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
23816 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
23817 */
23818
23819 #if defined(LIBC_SCCS) && !defined(lint)
23820 static char sccsid[] = "@(#)gethostnamadr.c 6.41 (Berkeley) 6/1/90";
23821 #endif /* LIBC_SCCS and not lint */
23822
23823 #ifdef _MINIX
23824 #include <sys/types.h>
23825 #include <ctype.h>
23826 #include <errno.h>
23827 #include <stdio.h>
23828 #include <string.h>
23829
23830 #include <net/hton.h>
23831 #include <net/gen/nameser.h>
23832 #include <net/gen/netdb.h>
23833 #include <net/gen/in.h>
23834 #include <net/gen/inet.h>
23835 #include <net/gen/resolv.h>
23836 #include <net/gen/socket.h>
23837 #else
23838 #include <sys/param.h>
23839 #include <sys/socket.h>
23840 #include <netinet/in.h>
23841 #include <ctype.h>
23842 #include <netdb.h>
23843 #include <stdio.h>
23844 #include <errno.h>
23845 #include <arpa/inet.h>
23846 #include <arpa/nameser.h>
23847 #include <resolv.h>
23848 #endif /* AMOEABA */
23849
23850 #define MAXALIASES 35
23851 #define MAXADDRS 35
23852
23853 static char *h_addr_ptrs[MAXADDRS + 1];
23854
23855 #ifdef _MINIX
23856 struct in_addr
23857 {
23858 ipaddr_t s_addr;
23859 };
23860 typedef u32_t u_long;
23861 typedef u16_t u_short;
23862 typedef u8_t u_char;
23863 union querybuf;
23864
23865 extern int dn_skipname _ARGS(( const u_char *comp_dn, const u_char *eom ));
23866 #define getshort _getshort
23867 static struct hostent *getanswer _ARGS(( union querybuf *answer, int anslen,
23868 int iquery ));
23869 #define bcmp memcmp
23870 #define bcopy(s, d, l) memcpy(d, s, l)
23871 #endif /* _MINIX */
23872
23873 static struct hostent host;
23874 static char *host_aliases[MAXALIASES];
.Op 213 src/lib/ip/gethnmadr.c
23875 static char hostbuf[BUFSIZ+1];
23876 static struct in_addr host_addr;
23877
23878 #ifndef _MINIX
23879 char *strpbrk();
23880 #endif /* !_MINIX */
23881
23882 #if PACKETSZ > 1024
23883 #define MAXPACKET PACKETSZ
23884 #else
23885 #define MAXPACKET 1024
23886 #endif
23887
23888 typedef union querybuf
23889 {
23890 dns_hdr_t hdr;
23891 u_char buf[MAXPACKET];
23892 } querybuf_t;
23893
23894 typedef union align {
23895 long al;
23896 char ac;
23897 } align_t;
23898
23899 static struct hostent *
23900 getanswer(answer, anslen, iquery)
23901 querybuf_t *answer;
23902 int anslen;
23903 int iquery;
23904 {
23905 register dns_hdr_t *hp;
23906 register u_char *cp;
23907 register int n;
23908 u_char *eom;
23909 char *bp, **ap;
23910 int type, class, buflen, ancount, qdcount;
23911 int haveanswer, getclass = C_ANY;
23912 char **hap;
23913
23914 eom = answer->buf + anslen;
23915 /*
23916 * find first satisfactory answer
23917 */
23918 hp = &answer->hdr;
23919 ancount = ntohs(hp->dh_ancount);
23920 qdcount = ntohs(hp->dh_qdcount);
23921 bp = hostbuf;
23922 buflen = sizeof(hostbuf);
23923 cp = answer->buf + sizeof(dns_hdr_t);
23924 if (qdcount) {
23925 if (iquery) {
23926 if ((n = dn_expand((u_char *)answer->buf, eom,
23927 cp, (u_char *)bp, buflen)) < 0) {
23928 h_errno = NO_RECOVERY;
23929 return ((struct hostent *) NULL);
23930 }
23931 cp += n + QFIXEDSZ;
23932 host.h_name = bp;
23933 n = strlen(bp) + 1;
23934 bp += n;
.Ep 214 src/lib/ip/gethnmadr.c
23935 buflen -= n;
23936 } else
23937 cp += dn_skipname(cp, eom) + QFIXEDSZ;
23938 while (--qdcount > 0)
23939 cp += dn_skipname(cp, eom) + QFIXEDSZ;
23940 } else if (iquery) {
23941 if (hp->dh_flag1 & DHF_AA)
23942 h_errno = HOST_NOT_FOUND;
23943 else
23944 h_errno = TRY_AGAIN;
23945 return ((struct hostent *) NULL);
23946 }
23947 ap = host_aliases;
23948 *ap = NULL;
23949 host.h_aliases = host_aliases;
23950 hap = h_addr_ptrs;
23951 *hap = NULL;
23952 #if BSD >= 43 || defined(h_addr) /* new-style hostent structure */
23953 host.h_addr_list = h_addr_ptrs;
23954 #endif
23955 haveanswer = 0;
23956 while (--ancount >= 0 && cp < eom) {
23957 if ((n = dn_expand((u_char *)answer->buf, eom, cp, (u_char *)bp,
23958 buflen)) < 0)
23959 break;
23960 cp += n;
23961 type = getshort(cp);
23962 cp += sizeof(u_short);
23963 class = getshort(cp);
23964 cp += sizeof(u_short) + sizeof(u_long);
23965 n = getshort(cp);
23966 cp += sizeof(u_short);
23967 if (type == T_CNAME) {
23968 cp += n;
23969 if (ap >= &host_aliases[MAXALIASES-1])
23970 continue;
23971 *ap++ = bp;
23972 n = strlen(bp) + 1;
23973 bp += n;
23974 buflen -= n;
23975 continue;
23976 }
23977 if (iquery && type == T_PTR) {
23978 if ((n = dn_expand((u8_t *)answer->buf, eom,
23979 cp, (u8_t *)bp, buflen)) < 0) {
23980 cp += n;
23981 continue;
23982 }
23983 cp += n;
23984 host.h_name = bp;
23985 return(&host);
23986 }
23987 if (iquery || type != T_A) {
23988 #ifdef DEBUG
23989 if (_res.options & RES_DEBUG)
23990 printf("unexpected answer type %d, size %dn",
23991 type, n);
23992 #endif
23993 cp += n;
23994 continue;
.Op 215 src/lib/ip/gethnmadr.c
23995 }
23996 if (haveanswer) {
23997 if (n != host.h_length) {
23998 cp += n;
23999 continue;
24000 }
24001 if (class != getclass) {
24002 cp += n;
24003 continue;
24004 }
24005 } else {
24006 host.h_length = n;
24007 getclass = class;
24008 host.h_addrtype = (class == C_IN) ? AF_INET : AF_UNSPEC;
24009 if (!iquery) {
24010 host.h_name = bp;
24011 bp += strlen(bp) + 1;
24012 }
24013 }
24014
24015 bp += (size_t)(sizeof(align_t) -
24016 ((u_long)bp % sizeof(align_t)));
24017
24018 if (bp + n >= &hostbuf[sizeof(hostbuf)]) {
24019 #ifdef DEBUG
24020 if (_res.options & RES_DEBUG)
24021 printf("size (%d) too bign", n);
24022 #endif
24023 break;
24024 }
24025 bcopy(cp, *hap++ = bp, n);
24026 bp +=n;
24027 cp += n;
24028 haveanswer++;
24029 }
24030 if (haveanswer) {
24031 *ap = NULL;
24032 #if BSD >= 43 || defined(h_addr) /* new-style hostent structure */
24033 *hap = NULL;
24034 #else
24035 host.h_addr = h_addr_ptrs[0];
24036 #endif
24037 return (&host);
24038 } else {
24039 h_errno = TRY_AGAIN;
24040 return ((struct hostent *) NULL);
24041 }
24042 }
24044 struct hostent *
24045 gethostbyname(name)
24046 char *name;
24047 {
24048 querybuf_t buf;
24049 register char *cp;
24050 int n;
24051
24052 /*
24053 * disallow names consisting only of digits/dots, unless
24054 * they end in a dot.
.Ep 216 src/lib/ip/gethnmadr.c
24055 */
24056 if (isdigit(name[0]))
24057 for (cp = name;; ++cp) {
24058 if (!*cp) {
24059 if (*--cp == '.')
24060 break;
24061 /*
24062 * All-numeric, no dot at the end.
24063 * Fake up a hostent as if we'd actually
24064 * done a lookup. What if someone types
24065 * 255.255.255.255? The test below will
24066 * succeed spuriously... ???
24067 */
24068 if ((host_addr.s_addr = inet_addr(name)) == -1) {
24069 h_errno = HOST_NOT_FOUND;
24070 return((struct hostent *) NULL);
24071 }
24072 host.h_name = name;
24073 host.h_aliases = host_aliases;
24074 host_aliases[0] = NULL;
24075 host.h_addrtype = AF_INET;
24076 host.h_length = sizeof(u_long);
24077 h_addr_ptrs[0] = (char *)&host_addr;
24078 h_addr_ptrs[1] = (char *)0;
24079 #if BSD >= 43 || defined(h_addr) /* new-style hostent structure */
24080 host.h_addr_list = h_addr_ptrs;
24081 #else
24082 host.h_addr = h_addr_ptrs[0];
24083 #endif
24084 return (&host);
24085 }
24086 if (!isdigit(*cp) && *cp != '.')
24087 break;
24088 }
24089
24090 if ((n = res_search(name, C_IN, T_A, buf.buf, sizeof(buf))) < 0) {
24091 #ifdef DEBUG
24092 if (_res.options & RES_DEBUG)
24093 printf("res_search failedn");
24094 #endif
24095 return ((struct hostent *) NULL);
24096 }
24097 return (getanswer(&buf, n, 0));
24098 }
24100 struct hostent *
24101 gethostbyaddr(addr, len, type)
24102 const char *addr;
24103 int len, type;
24104 {
24105 int n;
24106 querybuf_t buf;
24107 register struct hostent *hp;
24108 char qbuf[MAXDNAME];
24109
24110 if (type != AF_INET)
24111 return ((struct hostent *) NULL);
24112 (void)sprintf(qbuf, "%u.%u.%u.%u.in-addr.arpa",
24113 ((unsigned)addr[3] & 0xff),
24114 ((unsigned)addr[2] & 0xff),
.Op 217 src/lib/ip/gethnmadr.c
24115 ((unsigned)addr[1] & 0xff),
24116 ((unsigned)addr[0] & 0xff));
24117 n = res_query(qbuf, C_IN, T_PTR, (u8_t *)&buf, sizeof(buf));
24118 if (n < 0) {
24119 #ifdef DEBUG
24120 if (_res.options & RES_DEBUG)
24121 printf("res_query failedn");
24122 #endif
24123 return ((struct hostent *) NULL);
24124 }
24125 hp = getanswer(&buf, n, 1);
24126 if (hp == NULL)
24127 return ((struct hostent *) NULL);
24128 hp->h_addrtype = type;
24129 hp->h_length = len;
24130 h_addr_ptrs[0] = (char *)&host_addr;
24131 h_addr_ptrs[1] = (char *)0;
24132 host_addr = *(struct in_addr *)addr;
24133 #if BSD < 43 && !defined(h_addr) /* new-style hostent structure */
24134 hp->h_addr = h_addr_ptrs[0];
24135 #endif
24136 return(hp);
24137 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/gethostent.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
24200 /*
24201 * Copyright (c) 1985, 1988 Regents of the University of California.
24203 *
24204 * Redistribution and use in source and binary forms are permitted
24205 * provided that: (1) source distributions retain this entire copyright
24206 * notice and comment, and (2) distributions including binaries display
24207 * the following acknowledgement: ``This product includes software
24208 * developed by the University of California, Berkeley and its contributors''
24209 * in the documentation or other materials provided with the distribution
24210 * and in all advertising materials mentioning features or use of this
24211 * software. Neither the name of the University nor the names of its
24212 * contributors may be used to endorse or promote products derived
24213 * from this software without specific prior written permission.
24214 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
24215 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
24216 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24217 */
24218
24219 #if defined(LIBC_SCCS) && !defined(lint)
24220 static char sccsid[] = "@(#)gethostnamadr.c 6.41 (Berkeley) 6/1/90";
24221 #endif /* LIBC_SCCS and not lint */
24222
24223 /* Prefix the functions defined here with underscores to distinguish them
24224 * from the newer replacements in the resolver library.
24225 */
24226 #define sethostent _sethostent
24227 #define endhostent _endhostent
24228 #define gethostent _gethostent
24229 #define gethostbyname _gethostbyname
.Ep 218 src/lib/ip/gethostent.c
24230 #define gethostbyaddr _gethostbyaddr
24231
24232 #ifdef _MINIX
24233 #include <sys/types.h>
24234 #include <ctype.h>
24235 #include <errno.h>
24236 #include <stdio.h>
24237 #include <string.h>
24238
24239 #include <net/hton.h>
24240 #include <net/gen/nameser.h>
24241 #include <net/gen/netdb.h>
24242 #include <net/gen/in.h>
24243 #include <net/gen/inet.h>
24244 #include <net/gen/resolv.h>
24245 #include <net/gen/socket.h>
24246 #else
24247 #include <sys/param.h>
24248 #include <sys/socket.h>
24249 #include <netinet/in.h>
24250 #include <ctype.h>
24251 #include <netdb.h>
24252 #include <stdio.h>
24253 #include <errno.h>
24254 #include <arpa/inet.h>
24255 #include <arpa/nameser.h>
24256 #include <resolv.h>
24257 #endif /* !_MINIX */
24258
24259 #define MAXALIASES 35
24260 #define MAXADDRS 35
24261
24262 #ifdef _MINIX
24263 typedef u32_t u_long;
24264 typedef u16_t u_short;
24265 typedef u8_t u_char;
24266
24267 #define bcmp memcmp
24268 #endif /* _MINIX */
24269
24270 static struct hostent host;
24271 static char *host_aliases[MAXALIASES];
24272 static char hostbuf[BUFSIZ+1];
24273 static FILE *hostf = NULL;
24274 static u_long hostaddr[(MAXADDRS+sizeof(u_long)-1)/sizeof(u_long)];
24275 static char *host_addrs[2];
24276 static int stayopen = 0;
24277
24278 #ifndef _MINIX
24279 char *strpbrk();
24280 #endif /* !_MINIX */
24281
24282 void
24283 sethostent(f)
24284 int f;
24285 {
24286 if (hostf == NULL)
24287 hostf = fopen(_PATH_HOSTS, "r" );
24288 else
24289 rewind(hostf);
.Op 219 src/lib/ip/gethostent.c
24290 stayopen |= f;
24291 }
24293 void
24294 endhostent()
24295 {
24296 if (hostf && !stayopen) {
24297 (void) fclose(hostf);
24298 hostf = NULL;
24299 }
24300 }
24302 struct hostent *
24303 gethostent()
24304 {
24305 char *p;
24306 register char *cp, **q;
24307
24308 if (hostf == NULL && (hostf = fopen(_PATH_HOSTS, "r" )) == NULL)
24309 return (NULL);
24310 again:
24311 if ((p = fgets(hostbuf, BUFSIZ, hostf)) == NULL)
24312 return (NULL);
24313 if (*p == '#')
24314 goto again;
24315 cp = strpbrk(p, "#n");
24316 if (cp == NULL)
24317 goto again;
24318 *cp = '';
24319 cp = strpbrk(p, " t");
24320 if (cp == NULL)
24321 goto again;
24322 *cp++ = '';
24323 /* THIS STUFF IS INTERNET SPECIFIC */
24324 #if BSD >= 43 || defined(h_addr) /* new-style hostent structure */
24325 host.h_addr_list = host_addrs;
24326 #endif
24327 host.h_addr = (char *) hostaddr;
24328 *((u_long *)host.h_addr) = inet_addr(p);
24329 host.h_length = sizeof (u_long);
24330 host.h_addrtype = AF_INET;
24331 while (*cp == ' ' || *cp == 't')
24332 cp++;
24333 host.h_name = cp;
24334 q = host.h_aliases = host_aliases;
24335 cp = strpbrk(cp, " t");
24336 if (cp != NULL)
24337 *cp++ = '';
24338 while (cp && *cp) {
24339 if (*cp == ' ' || *cp == 't') {
24340 cp++;
24341 continue;
24342 }
24343 if (q < &host_aliases[MAXALIASES - 1])
24344 *q++ = cp;
24345 cp = strpbrk(cp, " t");
24346 if (cp != NULL)
24347 *cp++ = '';
24348 }
24349 *q = NULL;
.Ep 220 src/lib/ip/gethostent.c
24350 return (&host);
24351 }
24353 struct hostent *
24354 gethostbyname(name)
24355 char *name;
24356 {
24357 register struct hostent *p;
24358 register char **cp;
24359
24360 sethostent(0);
24361 while (p = gethostent()) {
24362 if (strcasecmp(p->h_name, name) == 0)
24363 break;
24364 for (cp = p->h_aliases; *cp != 0; cp++)
24365 if (strcasecmp(*cp, name) == 0)
24366 goto found;
24367 }
24368 found:
24369 endhostent();
24370 return (p);
24371 }
24373 struct hostent *
24374 gethostbyaddr(addr, len, type)
24375 const char *addr;
24376 int len, type;
24377 {
24378 register struct hostent *p;
24379
24380 sethostent(0);
24381 while (p = gethostent())
24382 if (p->h_addrtype == type && !bcmp(p->h_addr, addr, len))
24383 break;
24384 endhostent();
24385 return (p);
24386 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/gethostname.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
24400 /* gethostname(2) system call emulation */
24401
24402 #include <sys/types.h>
24403 #include <fcntl.h>
24404 #include <stdlib.h>
24405 #include <string.h>
24406 #include <unistd.h>
24407 #include <net/gen/netdb.h>
24408
24409 #define HOSTNAME_FILE "/etc/hostname.file"
24410
24411 int gethostname(char *buf, size_t len)
24412 {
24413 int fd;
24414 int r;
.Op 221 src/lib/ip/gethostname.c
24415 char *nl;
24416
24417 if ((fd= open(HOSTNAME_FILE, O_RDONLY)) < 0) return -1;
24418
24419 r= read(fd, buf, len);
24420 close(fd);
24421 if (r == -1) return -1;
24422
24423 buf[len-1]= '';
24424 if ((nl= strchr(buf, 'n')) != NULL) *nl= '';
24425 return 0;
24426 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/getproto.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
24500 /*
24501 * Copyright (c) 1983 Regents of the University of California.
24503 *
24504 * Redistribution and use in source and binary forms are permitted
24505 * provided that: (1) source distributions retain this entire copyright
24506 * notice and comment, and (2) distributions including binaries display
24507 * the following acknowledgement: ``This product includes software
24508 * developed by the University of California, Berkeley and its contributors''
24509 * in the documentation or other materials provided with the distribution
24510 * and in all advertising materials mentioning features or use of this
24511 * software. Neither the name of the University nor the names of its
24512 * contributors may be used to endorse or promote products derived
24513 * from this software without specific prior written permission.
24514 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
24515 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
24516 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24517 */
24518
24519 #if defined(LIBC_SCCS) && !defined(lint)
24520 static char sccsid[] = "@(#)getproto.c 5.6 (Berkeley) 6/1/90";
24521 #endif /* LIBC_SCCS and not lint */
24522
24523 #include <stddef.h>
24524
24525 #ifdef _MINIX
24526 #include <ansi.h>
24527 #include <net/gen/netdb.h>
24528 #endif
24529
24530 extern int _proto_stayopen;
24531
24532 struct protoent *
24533 getprotobynumber(proto)
24534 register int proto;
24535 {
24536 register struct protoent *p;
24537
24538 setprotoent(_proto_stayopen);
24539 while (p = getprotoent())
.Ep 222 src/lib/ip/getproto.c
24540 if (p->p_proto == proto)
24541 break;
24542 if (!_proto_stayopen)
24543 endprotoent();
24544 return (p);
24545 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/getprotoent.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
24600 /*
24601 * Copyright (c) 1983 Regents of the University of California.
24603 *
24604 * Redistribution and use in source and binary forms are permitted
24605 * provided that: (1) source distributions retain this entire copyright
24606 * notice and comment, and (2) distributions including binaries display
24607 * the following acknowledgement: ``This product includes software
24608 * developed by the University of California, Berkeley and its contributors''
24609 * in the documentation or other materials provided with the distribution
24610 * and in all advertising materials mentioning features or use of this
24611 * software. Neither the name of the University nor the names of its
24612 * contributors may be used to endorse or promote products derived
24613 * from this software without specific prior written permission.
24614 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
24615 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
24616 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24617 */
24618
24619 #if defined(LIBC_SCCS) && !defined(lint)
24620 static char sccsid[] = "@(#)getprotoent.c 5.7 (Berkeley) 6/1/90";
24621 #endif /* LIBC_SCCS and not lint */
24622
24623 #include <ctype.h>
24624 #include <stdio.h>
24625 #include <stdlib.h>
24626
24627 #ifdef _MINIX
24628 #include <net/gen/netdb.h>
24629
24630 static char *any _ARGS(( char *cp, char *match ));
24631 #endif
24632
24633 #define MAXALIASES 35
24634
24635 static FILE *protof = NULL;
24636 static char line[BUFSIZ+1];
24637 static struct protoent proto;
24638 static char *proto_aliases[MAXALIASES];
24639 int _proto_stayopen;
24640
24641 void
24642 setprotoent(f)
24643 int f;
24644 {
.Op 223 src/lib/ip/getprotoent.c
24645 if (protof == NULL)
24646 protof = fopen(_PATH_PROTOCOLS, "r" );
24647 else
24648 rewind(protof);
24649 _proto_stayopen |= f;
24650 }
24652 void
24653 endprotoent()
24654 {
24655 if (protof) {
24656 fclose(protof);
24657 protof = NULL;
24658 }
24659 _proto_stayopen = 0;
24660 }
24662 struct protoent *
24663 getprotoent()
24664 {
24665 char *p;
24666 register char *cp, **q;
24667
24668 if (protof == NULL && (protof = fopen(_PATH_PROTOCOLS, "r" )) == NULL)
24669 return (NULL);
24670 again:
24671 if ((p = fgets(line, BUFSIZ, protof)) == NULL)
24672 return (NULL);
24673 if (*p == '#')
24674 goto again;
24675 cp = any(p, "#n");
24676 if (cp == NULL)
24677 goto again;
24678 *cp = '';
24679 proto.p_name = p;
24680 cp = any(p, " t");
24681 if (cp == NULL)
24682 goto again;
24683 *cp++ = '';
24684 while (*cp == ' ' || *cp == 't')
24685 cp++;
24686 p = any(cp, " t");
24687 if (p != NULL)
24688 *p++ = '';
24689 proto.p_proto = atoi(cp);
24690 q = proto.p_aliases = proto_aliases;
24691 if (p != NULL) {
24692 cp = p;
24693 while (cp && *cp) {
24694 if (*cp == ' ' || *cp == 't') {
24695 cp++;
24696 continue;
24697 }
24698 if (q < &proto_aliases[MAXALIASES - 1])
24699 *q++ = cp;
24700 cp = any(cp, " t");
24701 if (cp != NULL)
24702 *cp++ = '';
24703 }
24704 }
.Ep 224 src/lib/ip/getprotoent.c
24705 *q = NULL;
24706 return (&proto);
24707 }
24709 static char *
24710 any(cp, match)
24711 register char *cp;
24712 char *match;
24713 {
24714 register char *mp, c;
24715
24716 while (c = *cp) {
24717 for (mp = match; *mp; mp++)
24718 if (*mp == c)
24719 return (cp);
24720 cp++;
24721 }
24722 return ((char *)0);
24723 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/getservent.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
24800 /*
24801 * Copyright (c) 1983 Regents of the University of California.
24803 *
24804 * Redistribution and use in source and binary forms are permitted
24805 * provided that: (1) source distributions retain this entire copyright
24806 * notice and comment, and (2) distributions including binaries display
24807 * the following acknowledgement: ``This product includes software
24808 * developed by the University of California, Berkeley and its contributors''
24809 * in the documentation or other materials provided with the distribution
24810 * and in all advertising materials mentioning features or use of this
24811 * software. Neither the name of the University nor the names of its
24812 * contributors may be used to endorse or promote products derived
24813 * from this software without specific prior written permission.
24814 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
24815 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
24816 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24817 */
24818
24819 #if defined(LIBC_SCCS) && !defined(lint)
24820 static char sccsid[] = "@(#)getservent.c 5.8 (Berkeley) 6/1/90";
24821 #endif /* LIBC_SCCS and not lint */
24822
24823 #include <sys/types.h>
24824 #include <ctype.h>
24825 #include <stdio.h>
24826 #include <stdlib.h>
24827
24828 #include <net/hton.h>
24829 #include <net/gen/netdb.h>
24830
24831 #define MAXALIASES 35
24832
24833 static FILE *servf = NULL;
24834 static char line[BUFSIZ+1];
.Op 225 src/lib/ip/getservent.c
24835 static struct servent serv;
24836 static char *serv_aliases[MAXALIASES];
24837 int _serv_stayopen;
24838
24839 static char *any _ARGS(( char *cp, char *match ));
24840
24841 void
24842 setservent(f)
24843 int f;
24844 {
24845 if (servf == NULL)
24846 servf = fopen(_PATH_SERVICES, "r" );
24847 else
24848 rewind(servf);
24849 _serv_stayopen |= f;
24850 }
24852 void
24853 endservent()
24854 {
24855 if (servf) {
24856 fclose(servf);
24857 servf = NULL;
24858 }
24859 _serv_stayopen = 0;
24860 }
24862 struct servent *
24863 getservent()
24864 {
24865 char *p;
24866 register char *cp, **q;
24867
24868 if (servf == NULL && (servf = fopen(_PATH_SERVICES, "r" )) == NULL)
24869 return (NULL);
24870 again:
24871 if ((p = fgets(line, BUFSIZ, servf)) == NULL)
24872 return (NULL);
24873 if (*p == '#')
24874 goto again;
24875 cp = any(p, "#n");
24876 if (cp == NULL)
24877 goto again;
24878 *cp = '';
24879 serv.s_name = p;
24880 p = any(p, " t");
24881 if (p == NULL)
24882 goto again;
24883 *p++ = '';
24884 while (*p == ' ' || *p == 't')
24885 p++;
24886 cp = any(p, ",/");
24887 if (cp == NULL)
24888 goto again;
24889 *cp++ = '';
24890 serv.s_port = htons((u16_t)atoi(p));
24891 serv.s_proto = cp;
24892 q = serv.s_aliases = serv_aliases;
24893 cp = any(cp, " t");
24894 if (cp != NULL)
.Ep 226 src/lib/ip/getservent.c
24895 *cp++ = '';
24896 while (cp && *cp) {
24897 if (*cp == ' ' || *cp == 't') {
24898 cp++;
24899 continue;
24900 }
24901 if (q < &serv_aliases[MAXALIASES - 1])
24902 *q++ = cp;
24903 cp = any(cp, " t");
24904 if (cp != NULL)
24905 *cp++ = '';
24906 }
24907 *q = NULL;
24908 return (&serv);
24909 }
24911 static char *
24912 any(cp, match)
24913 register char *cp;
24914 char *match;
24915 {
24916 register char *mp, c;
24917
24918 while (c = *cp) {
24919 for (mp = match; *mp; mp++)
24920 if (*mp == c)
24921 return (cp);
24922 cp++;
24923 }
24924 return ((char *)0);
24925 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/getsrvbyname.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25000 /*
25001 * Copyright (c) 1983 Regents of the University of California.
25003 *
25004 * Redistribution and use in source and binary forms are permitted
25005 * provided that: (1) source distributions retain this entire copyright
25006 * notice and comment, and (2) distributions including binaries display
25007 * the following acknowledgement: ``This product includes software
25008 * developed by the University of California, Berkeley and its contributors''
25009 * in the documentation or other materials provided with the distribution
25010 * and in all advertising materials mentioning features or use of this
25011 * software. Neither the name of the University nor the names of its
25012 * contributors may be used to endorse or promote products derived
25013 * from this software without specific prior written permission.
25014 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
25015 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
25016 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25017 */
25018
25019 #if defined(LIBC_SCCS) && !defined(lint)
.Op 227 src/lib/ip/getsrvbyname.c
25020 static char sccsid[] = "@(#)getservbyname.c 5.6 (Berkeley) 6/1/90";
25021 #endif /* LIBC_SCCS and not lint */
25022
25023 #include <string.h>
25024
25025 #include <net/gen/netdb.h>
25026
25027 extern int _serv_stayopen;
25028
25029 struct servent *
25030 getservbyname(name, proto)
25031 const char *name, *proto;
25032 {
25033 register struct servent *p;
25034 register char **cp;
25035
25036 setservent(_serv_stayopen);
25037 while (p = getservent()) {
25038 if (strcmp(name, p->s_name) == 0)
25039 goto gotname;
25040 for (cp = p->s_aliases; *cp; cp++)
25041 if (strcmp(name, *cp) == 0)
25042 goto gotname;
25043 continue;
25044 gotname:
25045 if (proto == 0 || strcmp(p->s_proto, proto) == 0)
25046 break;
25047 }
25048 if (!_serv_stayopen)
25049 endservent();
25050 return (p);
25051 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/getsrvbyport.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25100 /*
25101 * Copyright (c) 1983 Regents of the University of California.
25103 *
25104 * Redistribution and use in source and binary forms are permitted
25105 * provided that: (1) source distributions retain this entire copyright
25106 * notice and comment, and (2) distributions including binaries display
25107 * the following acknowledgement: ``This product includes software
25108 * developed by the University of California, Berkeley and its contributors''
25109 * in the documentation or other materials provided with the distribution
25110 * and in all advertising materials mentioning features or use of this
25111 * software. Neither the name of the University nor the names of its
25112 * contributors may be used to endorse or promote products derived
25113 * from this software without specific prior written permission.
25114 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
25115 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
25116 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25117 */
25118
25119 #if defined(LIBC_SCCS) && !defined(lint)
.Ep 228 src/lib/ip/getsrvbyport.c
25120 static char sccsid[] = "@(#)getservbyport.c 5.6 (Berkeley) 6/1/90";
25121 #endif /* LIBC_SCCS and not lint */
25122
25123 #include <stddef.h>
25124 #include <string.h>
25125
25126 #ifdef _MINIX
25127 #include <net/gen/netdb.h>
25128 #endif
25129
25130 extern int _serv_stayopen;
25131
25132 struct servent *
25133 getservbyport(port, proto)
25134 int port;
25135 const char *proto;
25136 {
25137 register struct servent *p;
25138
25139 setservent(_serv_stayopen);
25140 while (p = getservent()) {
25141 if (p->s_port != port)
25142 continue;
25143 if (proto == 0 || strcmp(p->s_proto, proto) == 0)
25144 break;
25145 }
25146 if (!_serv_stayopen)
25147 endservent();
25148 return (p);
25149 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/hton.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25200 /*
25201 hton.c
25202 */
25203
25204 #include <sys/types.h>
25205 #include <minix/config.h>
25206 #include <net/hton.h>
25207
25208 u16_t _tmp;
25209 u32_t _tmp_l;
.Op 229 src/lib/ip/inet_addr.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/inet_addr.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25300 /*
25301 * Copyright (c) 1983, 1990 Regents of the University of California.
25303 *
25304 * Redistribution and use in source and binary forms are permitted provided
25305 * that: (1) source distributions retain this entire copyright notice and
25306 * comment, and (2) distributions including binaries display the following
25307 * acknowledgement: ``This product includes software developed by the
25308 * University of California, Berkeley and its contributors'' in the
25309 * documentation or other materials provided with the distribution and in
25310 * all advertising materials mentioning features or use of this software.
25311 * Neither the name of the University nor the names of its contributors may
25312 * be used to endorse or promote products derived from this software without
25313 * specific prior written permission.
25314 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
25315 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
25316 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25317 */
25318
25319 #if defined(LIBC_SCCS) && !defined(lint)
25320 static char sccsid[] = "@(#)inet_addr.c 5.8 (Berkeley) 6/23/90";
25321 #endif /* LIBC_SCCS and not lint */
25322
25323 #if _MINIX
25324 #include <sys/types.h>
25325 #include <ctype.h>
25326 #include <errno.h>
25327
25328 #include <net/hton.h>
25329 #include <net/gen/in.h>
25330 #include <net/gen/inet.h>
25331 #endif
25332
25333 #ifdef __STDC__
25334 #define _CONST const
25335 #else
25336 #define _CONST
25337 #endif
25338
25339 /*
25340 * Ascii internet address interpretation routine.
25341 * The value returned is in network order.
25342 */
25343 ipaddr_t
25344 inet_addr(cp)
25345 register _CONST char *cp;
25346 {
25347 ipaddr_t val;
25348
25349 if (inet_aton(cp, &val))
25350 return (val);
25351 errno= EINVAL;
25352 return (ipaddr_t)-1;
25353 }
.Ep 230 src/lib/ip/inet_addr.c
25355 /*
25356 * Check whether "cp" is a valid ascii representation
25357 * of an Internet address and convert to a binary address.
25358 * Returns 1 if the address is valid, 0 if not.
25359 * This replaces inet_addr, the return value from which
25360 * cannot distinguish between failure and a local broadcast address.
25361 */
25362
25363 int
25364 inet_aton(cp, addr)
25365 register _CONST char *cp;
25366 ipaddr_t *addr;
25367 {
25368 register u32_t val, base, n;
25369 register char c;
25370 u32_t parts[4], *pp = parts;
25371
25372 for (;;) {
25373 /*
25374 * Collect number up to ``.''.
25375 * Values are specified as for C:
25376 * 0x=hex, 0=octal, other=decimal.
25377 */
25378 val = 0; base = 10;
25379 if (*cp == '0') {
25380 if (*++cp == 'x' || *cp == 'X')
25381 base = 16, cp++;
25382 else
25383 base = 8;
25384 }
25385 while ((c = *cp) != '') {
25386 if (isascii(c) && isdigit(c)) {
25387 val = (val * base) + (c - '0');
25388 cp++;
25389 continue;
25390 }
25391 if (base == 16 && isascii(c) && isxdigit(c)) {
25392 val = (val << 4) +
25393 (c + 10 - (islower(c) ? 'a' : 'A'));
25394 cp++;
25395 continue;
25396 }
25397 break;
25398 }
25399 if (*cp == '.') {
25400 /*
25401 * Internet format:
25402 * a.b.c.d
25403 * a.b.c (with c treated as 16-bits)
25404 * a.b (with b treated as 24 bits)
25405 */
25406 if (pp >= parts + 3 || val > 0xff)
25407 return (0);
25408 *pp++ = val, cp++;
25409 } else
25410 break;
25411 }
25412 /*
25413 * Check for trailing characters.
25414 */
.Op 231 src/lib/ip/inet_addr.c
25415 if (*cp && (!isascii(*cp) || !isspace(*cp)))
25416 return (0);
25417 /*
25418 * Concoct the address according to
25419 * the number of parts specified.
25420 */
25421 n = pp - parts + 1;
25422 switch (n) {
25423
25424 case 1: /* a -- 32 bits */
25425 break;
25426
25427 case 2: /* a.b -- 8.24 bits */
25428 if (val > 0xffffff)
25429 return (0);
25430 val |= parts[0] << 24;
25431 break;
25432
25433 case 3: /* a.b.c -- 8.8.16 bits */
25434 if (val > 0xffff)
25435 return (0);
25436 val |= (parts[0] << 24) | (parts[1] << 16);
25437 break;
25438
25439 case 4: /* a.b.c.d -- 8.8.8.8 bits */
25440 if (val > 0xff)
25441 return (0);
25442 val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
25443 break;
25444 }
25445 if (addr)
25446 *addr = htonl(val);
25447 return (1);
25448 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/inet_ntoa.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25500 /*
25501 * Copyright (c) 1983 Regents of the University of California.
25503 *
25504 * Redistribution and use in source and binary forms are permitted
25505 * provided that: (1) source distributions retain this entire copyright
25506 * notice and comment, and (2) distributions including binaries display
25507 * the following acknowledgement: ``This product includes software
25508 * developed by the University of California, Berkeley and its contributors''
25509 * in the documentation or other materials provided with the distribution
25510 * and in all advertising materials mentioning features or use of this
25511 * software. Neither the name of the University nor the names of its
25512 * contributors may be used to endorse or promote products derived
25513 * from this software without specific prior written permission.
25514 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
25515 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
25516 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25517 */
25518
25519 #if defined(LIBC_SCCS) && !defined(lint)
.Ep 232 src/lib/ip/inet_ntoa.c
25520 static char sccsid[] = "@(#)inet_ntoa.c 5.5 (Berkeley) 6/1/90";
25521 #endif /* LIBC_SCCS and not lint */
25522
25523 /*
25524 * Convert network-format internet address
25525 * to base 256 d.d.d.d representation.
25526 */
25527
25528 #include <sys/types.h>
25529 #include <stdio.h>
25530
25531 #include <net/gen/in.h>
25532 #include <net/gen/inet.h>
25533
25534 char *
25535 inet_ntoa(in)
25536 ipaddr_t in;
25537 {
25538 static char b[18];
25539 register u8_t *p;
25540
25541 p = (u8_t *)&in;
25542 sprintf(b, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
25543 return (b);
25544 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/memcspn.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25600 /*
25601 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
25602 * See the copyright notice in the ACK home directory, in the file "Copyright".
25603 */
25604 /* $Header: strcspn.c,v 1.1 91/12/19 13:20:40 philip Exp $ */
25605
25606 #include <string.h>
25607
25608 size_t
25609 memcspn(const char *string, size_t strlen, const char *notin, size_t notinlen)
25610 {
25611 register const char *s1, *s2;
25612 int i,j;
25613
25614 for (s1 = string, i = 0; i<strlen; s1++, i++) {
25615 for(s2 = notin, j = 0; *s2 != *s1 && j < notinlen; s2++, j++)
25616 /* EMPTY */ ;
25617 if (j != notinlen)
25618 break;
25619 }
25620 return s1 - string;
25621 }
.Op 233 src/lib/ip/oneC_sum.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/oneC_sum.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25700 /* oneC_sum() - One complement's checksum Author: Kees J. Bot
25701 * 8 May 1995
25702 * See RFC 1071, "Computing the Internet checksum"
25703 */
25704
25705 #include <sys/types.h>
25706 #include <net/gen/oneCsum.h>
25707
25708 u16_t oneC_sum(U16_t prev, void *data, size_t size)
25709 {
25710 u8_t *dptr;
25711 size_t n;
25712 u16_t word;
25713 u32_t sum;
25714 int swap= 0;
25715
25716 sum= prev;
25717 dptr= data;
25718 n= size;
25719
25720 swap= ((size_t) dptr & 1);
25721 if (swap) {
25722 sum= ((sum & 0xFF) << 8) | ((sum & 0xFF00) >> 8);
25723 if (n > 0) {
25724 ((u8_t *) &word)[0]= 0;
25725 ((u8_t *) &word)[1]= dptr[0];
25726 sum+= (u32_t) word;
25727 dptr+= 1;
25728 n-= 1;
25729 }
25730 }
25731
25732 while (n >= 8) {
25733 sum+= (u32_t) ((u16_t *) dptr)[0]
25734 + (u32_t) ((u16_t *) dptr)[1]
25735 + (u32_t) ((u16_t *) dptr)[2]
25736 + (u32_t) ((u16_t *) dptr)[3];
25737 dptr+= 8;
25738 n-= 8;
25739 }
25740
25741 while (n >= 2) {
25742 sum+= (u32_t) ((u16_t *) dptr)[0];
25743 dptr+= 2;
25744 n-= 2;
25745 }
25746
25747 if (n > 0) {
25748 ((u8_t *) &word)[0]= dptr[0];
25749 ((u8_t *) &word)[1]= 0;
25750 sum+= (u32_t) word;
25751 }
25752
25753 sum= (sum & 0xFFFF) + (sum >> 16);
25754 if (sum > 0xFFFF) sum++;
.Ep 234 src/lib/ip/oneC_sum.c
25755
25756 if (swap) {
25757 sum= ((sum & 0xFF) << 8) | ((sum & 0xFF00) >> 8);
25758 }
25759 return sum;
25760 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/rcmd.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
25800 /*
25801 * Copyright (c) 1983 Regents of the University of California.
25803 *
25804 * Redistribution and use in source and binary forms are permitted
25805 * provided that: (1) source distributions retain this entire copyright
25806 * notice and comment, and (2) distributions including binaries display
25807 * the following acknowledgement: ``This product includes software
25808 * developed by the University of California, Berkeley and its contributors''
25809 * in the documentation or other materials provided with the distribution
25810 * and in all advertising materials mentioning features or use of this
25811 * software. Neither the name of the University nor the names of its
25812 * contributors may be used to endorse or promote products derived
25813 * from this software without specific prior written permission.
25814 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
25815 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
25816 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
25817 */
25818
25819 #if defined(LIBC_SCCS) && !defined(lint)
25820 static char sccsid[] = "@(#)rcmd.c 5.22 (Berkeley) 6/1/90";
25821 #endif /* LIBC_SCCS and not lint */
25822
25823 #if _MINIX
25824 #include <sys/types.h>
25825 #include <sys/stat.h>
25826 #include <sys/ioctl.h>
25827 #include <ctype.h>
25828 #include <errno.h>
25829 #include <fcntl.h>
25830 #include <limits.h>
25831 #include <pwd.h>
25832 #include <stdio.h>
25833 #include <stdlib.h>
25834 #include <signal.h>
25835 #include <string.h>
25836 #include <unistd.h>
25837 #include <net/gen/netdb.h>
25838 #include <net/gen/in.h>
25839 #include <net/gen/tcp.h>
25840 #include <net/gen/tcp_io.h>
25841 #include <net/hton.h>
25842 #include <net/netlib.h>
25843
25844 #define MAXHOSTNAMELEN 256
.Op 235 src/lib/ip/rcmd.c
25845 #define MAXPATHLEN PATH_MAX
25846 #else
25847 #include <stdio.h>
25848 #include <ctype.h>
25849 #include <pwd.h>
25850 #include <sys/param.h>
25851 #include <sys/file.h>
25852 #include <sys/signal.h>
25853 #include <sys/socket.h>
25854 #include <sys/stat.h>
25855
25856 #include <netinet/in.h>
25857
25858 #include <netdb.h>
25859 #include <errno.h>
25860 #endif
25861
25862 #ifdef __STDC__
25863 #define CONST const
25864 #else
25865 #define CONST
25866 #endif
25867
25868 extern errno;
25869 #if _MINIX
25870 int _validuser _ARGS(( FILE *hostf, const char *rhost, const char *luser,
25871 const char *ruser, int baselen ));
25872 static int _checkhost _ARGS(( const char *rhost, const char *lhost, int len ));
25873 #else
25874 char *index();
25875 #endif
25876
25877 #if _MINIX
25878 int rcmd(ahost, rport, locuser, remuser, cmd, fd2p)
25879 char **ahost;
25880 int rport;
25881 CONST char *locuser, *remuser, *cmd;
25882 int *fd2p;
25883 {
25884 int fd, fd2, result;
25885 struct hostent *hp;
25886 tcpport_t lport;
25887 nwio_tcpconf_t tcpconf;
25888 nwio_tcpcl_t tcpconnopt;
25889 pid_t pid;
25890 char num[8];
25891 char c;
25892 char *tcp_device;
25893
25894 fd= -1;
25895 fd2= -1;
25896
25897 tcp_device= getenv("TCP_DEVICE");
25898 if (tcp_device == NULL)
25899 tcp_device= TCP_DEVICE;
25900 hp= gethostbyname(*ahost);
25901 if (!hp)
25902 {
25903 fprintf(stderr, "%s: unknown hostn", *ahost);
25904 return -1;
.Ep 236 src/lib/ip/rcmd.c
25905 }
25906 *ahost= hp->h_name;
25907 for (lport= TCPPORT_RESERVED-1; lport >= TCPPORT_RESERVED/2; lport--)
25908 {
25909 fd= open (tcp_device, O_RDWR);
25910 if (fd<0)
25911 {
25912 fprintf(stderr, "unable to open %s: %sn",
25913 tcp_device, strerror(errno));
25914 goto bad;
25915 }
25916 tcpconf.nwtc_flags= NWTC_LP_SET | NWTC_SET_RA | NWTC_SET_RP |
25917 NWTC_EXCL;
25918 tcpconf.nwtc_locport= htons(lport);
25919 tcpconf.nwtc_remport= rport;
25920 tcpconf.nwtc_remaddr= *(ipaddr_t *)hp->h_addr;
25921
25922 result= ioctl(fd, NWIOSTCPCONF, &tcpconf);
25923 if (result<0)
25924 {
25925 if (errno == EADDRINUSE)
25926 {
25927 close(fd);
25928 continue;
25929 }
25930 fprintf(stderr, "unable to ioctl(NWIOSTCPCONF): %sn",
25931 strerror(errno));
25932 goto bad;
25933 }
25934 tcpconf.nwtc_flags= NWTC_SHARED;
25935 result= ioctl(fd, NWIOSTCPCONF, &tcpconf);
25936 if (result<0)
25937 {
25938 fprintf(stderr, "unable to ioctl(NWIOSTCPCONF): %sn",
25939 strerror(errno));
25940 goto bad;
25941 }
25942 tcpconnopt.nwtcl_flags= 0;
25943
25944 do
25945 {
25946 result= ioctl (fd, NWIOTCPCONN, &tcpconnopt);
25947 if (result<0 && errno == EAGAIN)
25948 {
25949 sleep(2);
25950 }
25951 } while (result<0 && errno == EAGAIN);
25952 if (result<0 && errno != EADDRINUSE)
25953 {
25954 fprintf(stderr,
25955 "unable to ioctl(NWIOTCPCONN): %sn",
25956 strerror(errno));
25957 goto bad;
25958 }
25959 if (result>=0)
25960 break;
25961 }
25962 if (lport<TCPPORT_RESERVED/2)
25963 {
25964 fprintf(stderr, "can't get portn");
.Op 237 src/lib/ip/rcmd.c
25965 return -1;
25966 }
25967 if (!fd2p)
25968 {
25969 if (write(fd, "", 1) != 1)
25970 {
25971 fprintf(stderr, "unable to write: %s", strerror(errno));
25972 goto bad;
25973 }
25974 }
25975 else
25976 {
25977 fd2= open (tcp_device, O_RDWR);
25978 if (fd2<0)
25979 {
25980 fprintf(stderr, "unable to open %s: %sn",
25981 tcp_device, strerror(errno));
25982 goto bad;
25983 }
25984 tcpconf.nwtc_flags= NWTC_LP_SET | NWTC_UNSET_RA |
25985 NWTC_UNSET_RP | NWTC_SHARED;
25986 tcpconf.nwtc_locport= htons(lport);
25987
25988 result= ioctl(fd2, NWIOSTCPCONF, &tcpconf);
25989 if (result<0)
25990 {
25991 fprintf(stderr,
25992 "unable to ioctl(NWIOSTCPCONF): %sn",
25993 strerror(errno));
25994 goto bad;
25995 }
25996 pid= fork();
25997 if (pid<0)
25998 {
25999 fprintf(stderr, "unable to fork: %sn",
26000 strerror(errno));
26001 goto bad;
26002 }
26003 if (!pid)
26004 {
26005 alarm(0);
26006 signal(SIGALRM, SIG_DFL);
26007 alarm(30); /* give up after half a minute */
26008 tcpconnopt.nwtcl_flags= 0;
26009
26010 do
26011 {
26012 result= ioctl (fd2, NWIOTCPLISTEN,
26013 &tcpconnopt);
26014 if (result<0 && errno == EAGAIN)
26015 {
26016 sleep(2);
26017 }
26018 } while (result<0 && errno == EAGAIN);
26019 if (result<0 && errno != EADDRINUSE)
26020 {
26021 fprintf(stderr,
26022 "unable to ioctl(NWIOTCPLISTEN): %sn",
26023 strerror(errno));
26024 exit(1);
.Ep 238 src/lib/ip/rcmd.c
26025 }
26026 if (result>=0)
26027 exit(0);
26028 else
26029 exit(1);
26030 }
26031 /*
26032 * This sleep is a HACK. The command that we are starting
26033 * will try to connect to the fd2 port. It seems that for
26034 * this to succeed the child process must have already made
26035 * the call to ioctl above (the NWIOTCPLISTEN) call.
26036 * The sleep gives the child a chance to make the call
26037 * before the parent sends the port number to the
26038 * command being started.
26039 */
26040 sleep(1);
26041
26042 sprintf(num, "%d", lport);
26043 if (write(fd, num, strlen(num)+1) != strlen(num)+1)
26044 {
26045 fprintf(stderr, "unable to write: %sn",
26046 strerror(errno));
26047 goto bad;
26048 }
26049
26050 }
26051 write (fd, locuser, strlen(locuser)+1);
26052 write (fd, remuser, strlen(remuser)+1);
26053 write (fd, cmd, strlen(cmd)+1);
26054 if (read(fd, &c, 1) != 1)
26055 {
26056 fprintf(stderr, "unable to read: %sn", strerror(errno) );
26057 goto bad;
26058 }
26059 if (c != 0)
26060 {
26061 while (read(fd, &c, 1) == 1)
26062 {
26063 write(2, &c, 1);
26064 if (c == 'n')
26065 break;
26066 }
26067 goto bad;
26068 }
26069 if (fd2p)
26070 {
26071 *fd2p= fd2;
26072 result= ioctl(fd2, NWIOGTCPCONF, &tcpconf);
26073 if (result<0)
26074 {
26075 fprintf(stderr, "unable to ioctl(NWIOGTCPCONF): %sn",
26076 strerror(errno) );
26077 goto bad;
26078 }
26079 if (ntohs(tcpconf.nwtc_remport) >= TCPPORT_RESERVED)
26080 {
26081 fprintf(stderr, "unable to setup 2nd channeln");
26082 goto bad;
26083 }
26084 }
.Op 239 src/lib/ip/rcmd.c
26085 return fd;
26086
26087 bad:
26088 if (fd>=0)
26089 close(fd);
26090 if (fd2>=0)
26091 close(fd2);
26092 return -1;
26093 }
26094 #else /* _MINIX */
26095 rcmd(ahost, rport, locuser, remuser, cmd, fd2p)
26096 char **ahost;
26097 u_short rport;
26098 char *locuser, *remuser, *cmd;
26099 int *fd2p;
26100 {
26101 int s, timo = 1, pid;
26102 long oldmask;
26103 struct sockaddr_in sin, sin2, from;
26104 char c;
26105 int lport = IPPORT_RESERVED - 1;
26106 struct hostent *hp;
26107 fd_set reads;
26108
26109 pid = getpid();
26110 hp = gethostbyname(*ahost);
26111 if (hp == 0) {
26112 herror(*ahost);
26113 return (-1);
26114 }
26115 *ahost = hp->h_name;
26116 oldmask = sigblock(sigmask(SIGURG));
26117 for (;;) {
26118 s = rresvport(&lport);
26119 if (s < 0) {
26120 if (errno == EAGAIN)
26121 fprintf(stderr, "socket: All ports in usen");
26122 else
26123 perror("rcmd: socket");
26124 sigsetmask(oldmask);
26125 return (-1);
26126 }
26127 fcntl(s, F_SETOWN, pid);
26128 sin.sin_family = hp->h_addrtype;
26129 bcopy(hp->h_addr_list[0], (caddr_t)&sin.sin_addr, hp->h_length);
26130 sin.sin_port = rport;
26131 if (connect(s, (caddr_t)&sin, sizeof (sin), 0) >= 0)
26132 break;
26133 (void) close(s);
26134 if (errno == EADDRINUSE) {
26135 lport--;
26136 continue;
26137 }
26138 if (errno == ECONNREFUSED && timo <= 16) {
26139 sleep(timo);
26140 timo *= 2;
26141 continue;
26142 }
26143 if (hp->h_addr_list[1] != NULL) {
26144 int oerrno = errno;
.Ep 240 src/lib/ip/rcmd.c
26145
26146 fprintf(stderr,
26147 "connect to address %s: ", inet_ntoa(sin.sin_addr));
26148 errno = oerrno;
26149 perror(0);
26150 hp->h_addr_list++;
26151 bcopy(hp->h_addr_list[0], (caddr_t)&sin.sin_addr,
26152 hp->h_length);
26153 fprintf(stderr, "Trying %s...n",
26154 inet_ntoa(sin.sin_addr));
26155 continue;
26156 }
26157 perror(hp->h_name);
26158 sigsetmask(oldmask);
26159 return (-1);
26160 }
26161 lport--;
26162 if (fd2p == 0) {
26163 write(s, "", 1);
26164 lport = 0;
26165 } else {
26166 char num[8];
26167 int s2 = rresvport(&lport), s3;
26168 int len = sizeof (from);
26169
26170 if (s2 < 0)
26171 goto bad;
26172 listen(s2, 1);
26173 (void) sprintf(num, "%d", lport);
26174 if (write(s, num, strlen(num)+1) != strlen(num)+1) {
26175 perror("write: setting up stderr");
26176 (void) close(s2);
26177 goto bad;
26178 }
26179 FD_ZERO(&reads);
26180 FD_SET(s, &reads);
26181 FD_SET(s2, &reads);
26182 errno = 0;
26183 if (select(32, &reads, 0, 0, 0) < 1 ||
26184 !FD_ISSET(s2, &reads)) {
26185 if (errno != 0)
26186 perror("select: setting up stderr");
26187 else
26188 fprintf(stderr,
26189 "select: protocol failure in circuit setup.n");
26190 (void) close(s2);
26191 goto bad;
26192 }
26193 s3 = accept(s2, &from, &len, 0);
26194 (void) close(s2);
26195 if (s3 < 0) {
26196 perror("accept");
26197 lport = 0;
26198 goto bad;
26199 }
26200 *fd2p = s3;
26201 from.sin_port = ntohs((u_short)from.sin_port);
26202 if (from.sin_family != AF_INET ||
26203 from.sin_port >= IPPORT_RESERVED ||
26204 from.sin_port < IPPORT_RESERVED / 2) {
.Op 241 src/lib/ip/rcmd.c
26205 fprintf(stderr,
26206 "socket: protocol failure in circuit setup.n");
26207 goto bad2;
26208 }
26209 }
26210 (void) write(s, locuser, strlen(locuser)+1);
26211 (void) write(s, remuser, strlen(remuser)+1);
26212 (void) write(s, cmd, strlen(cmd)+1);
26213 if (read(s, &c, 1) != 1) {
26214 perror(*ahost);
26215 goto bad2;
26216 }
26217 if (c != 0) {
26218 while (read(s, &c, 1) == 1) {
26219 (void) write(2, &c, 1);
26220 if (c == 'n')
26221 break;
26222 }
26223 goto bad2;
26224 }
26225 sigsetmask(oldmask);
26226 return (s);
26227 bad2:
26228 if (lport)
26229 (void) close(*fd2p);
26230 bad:
26231 (void) close(s);
26232 sigsetmask(oldmask);
26233 return (-1);
26234 }
26236 rresvport(alport)
26237 int *alport;
26238 {
26239 struct sockaddr_in sin;
26240 int s;
26241
26242 sin.sin_family = AF_INET;
26243 sin.sin_addr.s_addr = INADDR_ANY;
26244 s = socket(AF_INET, SOCK_STREAM, 0);
26245 if (s < 0)
26246 return (-1);
26247 for (;;) {
26248 sin.sin_port = htons((u_short)*alport);
26249 if (bind(s, (caddr_t)&sin, sizeof (sin)) >= 0)
26250 return (s);
26251 if (errno != EADDRINUSE) {
26252 (void) close(s);
26253 return (-1);
26254 }
26255 (*alport)--;
26256 if (*alport == IPPORT_RESERVED/2) {
26257 (void) close(s);
26258 errno = EAGAIN; /* close */
26259 return (-1);
26260 }
26261 }
26262 }
26263 #endif /* _MINIX */
26264
.Ep 242 src/lib/ip/rcmd.c
26265 int _check_rhosts_file = 1;
26266
26267 ruserok(rhost, superuser, ruser, luser)
26268 CONST char *rhost;
26269 int superuser;
26270 CONST char *ruser, *luser;
26271 {
26272 FILE *hostf;
26273 char fhost[MAXHOSTNAMELEN];
26274 int first = 1;
26275 register CONST char *sp;
26276 register char *p;
26277 int baselen = -1;
26278
26279 sp = rhost;
26280 p = fhost;
26281 while (*sp) {
26282 if (*sp == '.') {
26283 if (baselen == -1)
26284 baselen = sp - rhost;
26285 *p++ = *sp++;
26286 } else {
26287 *p++ = isupper(*sp) ? tolower(*sp++) : *sp++;
26288 }
26289 }
26290 *p = '';
26291 hostf = superuser ? (FILE *)0 : fopen(_PATH_HEQUIV, "r");
26292 again:
26293 if (hostf) {
26294 if (!_validuser(hostf, fhost, luser, ruser, baselen)) {
26295 (void) fclose(hostf);
26296 return(0);
26297 }
26298 (void) fclose(hostf);
26299 }
26300 if (first == 1 && (_check_rhosts_file || superuser)) {
26301 struct stat sbuf;
26302 struct passwd *pwd;
26303 char pbuf[MAXPATHLEN];
26304
26305 first = 0;
26306 if ((pwd = getpwnam(luser)) == NULL)
26307 return(-1);
26308 (void)strcpy(pbuf, pwd->pw_dir);
26309 (void)strcat(pbuf, "/.rhosts");
26310 if ((hostf = fopen(pbuf, "r")) == NULL)
26311 return(-1);
26312 /*
26313 * if owned by someone other than user or root or if
26314 * writeable by anyone but the owner, quit
26315 */
26316 if (fstat(fileno(hostf), &sbuf) ||
26317 sbuf.st_uid && sbuf.st_uid != pwd->pw_uid ||
26318 sbuf.st_mode&022) {
26319 fclose(hostf);
26320 return(-1);
26321 }
26322 goto again;
26323 }
26324 return (-1);
.Op 243 src/lib/ip/rcmd.c
26325 }
26327 /* don't make static, used by lpd(8) */
26328 int _validuser(hostf, rhost, luser, ruser, baselen)
26329 FILE *hostf;
26330 CONST char *rhost, *luser, *ruser;
26331 int baselen;
26332 {
26333 char *user;
26334 char ahost[MAXHOSTNAMELEN];
26335 register char *p;
26336
26337 while (fgets(ahost, sizeof (ahost), hostf)) {
26338 p = ahost;
26339 while (*p != 'n' && *p != ' ' && *p != 't' && *p != '') {
26340 *p = isupper(*p) ? tolower(*p) : *p;
26341 p++;
26342 }
26343 if (*p == ' ' || *p == 't') {
26344 *p++ = '';
26345 while (*p == ' ' || *p == 't')
26346 p++;
26347 user = p;
26348 while (*p != 'n' && *p != ' ' && *p != 't' && *p != '')
26349 p++;
26350 } else
26351 user = p;
26352 *p = '';
26353 if (_checkhost(rhost, ahost, baselen) &&
26354 !strcmp(ruser, *user ? user : luser)) {
26355 return (0);
26356 }
26357 }
26358 return (-1);
26359 }
26361 static int
26362 _checkhost(rhost, lhost, len)
26363 CONST char *rhost, *lhost;
26364 int len;
26365 {
26366 static char ldomain[MAXHOSTNAMELEN + 1];
26367 static char *domainp = NULL;
26368 static int nodomain = 0;
26369 register char *cp;
26370
26371 if (len == -1)
26372 return(!strcmp(rhost, lhost));
26373 if (strncmp(rhost, lhost, len))
26374 return(0);
26375 if (!strcmp(rhost, lhost))
26376 return(1);
26377 if (*(lhost + len) != '')
26378 return(0);
26379 if (nodomain)
26380 return(0);
26381 if (!domainp) {
26382 if (gethostname(ldomain, sizeof(ldomain)) == -1) {
26383 nodomain = 1;
26384 return(0);
.Ep 244 src/lib/ip/rcmd.c
26385 }
26386 ldomain[MAXHOSTNAMELEN] = 0;
26387 if ((domainp = index(ldomain, '.')) == (char *)NULL) {
26388 nodomain = 1;
26389 return(0);
26390 }
26391 for (cp = ++domainp; *cp; ++cp)
26392 if (isupper(*cp))
26393 *cp = tolower(*cp);
26394 }
26395 return(!strcmp(domainp, rhost + len +1));
26396 }
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/lib/ip/res_comp.c
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
26400 /*
26401 * Copyright (c) 1985 Regents of the University of California.
26403 *
26404 * Redistribution and use in source and binary forms are permitted provided
26405 * that: (1) source distributions retain this entire copyright notice and
26406 * comment, and (2) distributions including binaries display the following
26407 * acknowledgement: ``This product includes software developed by the
26408 * University of California, Berkeley and its contributors'' in the
26409 * documentation or other materials provided with the distribution and in
26410 * all advertising materials mentioning features or use of this software.
26411 * Neither the name of the University nor the names of its contributors may
26412 * be used to endorse or promote products derived from this software without
26413 * specific prior written permission.
26414 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
26415 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
26416 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
26417 */
26418
26419 #if defined(LIBC_SCCS) && !defined(lint)
26420 static char sccsid[] = "@(#)res_comp.c 6.18 (Berkeley) 6/27/90";
26421 #endif /* LIBC_SCCS and not lint */
26422
26423 #if _MINIX
26424 #include <sys/types.h>
26425 #include <stdlib.h>
26426
26427 #include <net/gen/in.h>
26428 #include <net/gen/nameser.h>
26429 #include <net/gen/resolv.h>
26430
26431 typedef u8_t u_char;
26432 typedef u16_t u_short;
26433 typedef u32_t u_long;
26434
26435 static int dn_find _ARGS(( const u_char *exp_dn, const u_char *msg,
26436 u_char **dnptrs, u_char **lastdnptr ));
26437 int dn_skipname _ARGS(( const u_char *comp_dn, const u_char *eom ));
26438
26439 #define getshort _getshort
.Op 245 src/lib/ip/res_comp.c
26440 #define getlong _getlong
26441 #define putshort __putshort
26442 #define putlong __putlong
26443 #else
26444 #include <sys/types.h>
26445 #include <stdio.h>
26446 #include <arpa/nameser.h>
26447
26448 static dn_find();
26449 #endif
26450
26451 #ifdef __STDC__
26452 #define CONST const
26453 #else
26454 #define CONST
26455 #endif
26456
26457 /*
26458 * Expand compressed domain name 'comp_dn' to full domain name.
26459 * 'msg' is a pointer to the begining of the message,
26460 * 'eomorig' points to the first location after the message,
26461 * 'exp_dn' is a pointer to a buffer of size 'length' for the result.
26462 * Return size of compressed name or -1 if there was an error.
26463 */
26464 dn_expand(msg, eomorig, comp_dn, exp_dn, length)
26465 CONST u_char *msg, *eomorig, *comp_dn;
26466 u_char *exp_dn;
26467 int length;
26468 {
26469 register CONST u_char *cp;
26470 register u_char *dn;
26471 register int n, c;
26472 CONST u_char *eom;
26473 int len = -1, checked = 0;
26474
26475 dn = exp_dn;
26476 cp = comp_dn;
26477 eom = exp_dn + length;
26478 /*
26479 * fetch next label in domain name
26480 */
26481 while (n = *cp++) {
26482 /*
26483 * Check for indirection
26484 */
26485 switch (n & INDIR_MASK) {
26486 case 0:
26487 if (dn != exp_dn) {
26488 if (dn >= eom)
26489 return (-1);
26490 *dn++ = '.';
26491 }
26492 if (dn+n >= eom)
26493 return (-1);
26494 checked += n + 1;
26495 while (--n >= 0) {
26496 if ((c = *cp++) == '.') {
26497 if (dn + n + 2 >= eom)
26498 return (-1);
26499 *dn++ = '\';
.Ep 246 src/lib/ip/res_comp.c
26500 }
26501 *dn++ = c;
26502 if (cp >= eomorig) /* out of range */
26503 return(-1);
26504 }
26505 break;
26506
26507 case INDIR_MASK:
26508 if (len < 0)
26509 len = cp - comp_dn + 1;
26510 cp = msg + (((n & 0x3f) << 8) | (*cp & 0xff));
26511 if (cp < msg || cp >= eomorig) /* out of range */
26512 return(-1);
26513 checked += 2;
26514 /*
26515 * Check for loops in the compressed name;
26516 * if we've looked at the whole message,
26517 * there must be a loop.
26518 */
26519 if (checked >= eomorig - msg)
26520 return (-1);
26521 break;
26522
26523 default:
26524 return (-1); /* flag error */
26525 }
26526 }
26527 *dn = '';
26528 if (len < 0)
26529 len = cp - comp_dn;
26530 return (len);
26531 }
26533 /*
26534 * Compress domain name 'exp_dn' into 'comp_dn'.
26535 * Return the size of the compressed name or -1.
26536 * 'length' is the size of the array pointed to by 'comp_dn'.
26537 * 'dnptrs' is a list of pointers to previous compressed names. dnptrs[0]
26538 * is a pointer to the beginning of the message. The list ends with NULL.
26539 * 'lastdnptr' is a pointer to the end of the arrary pointed to
26540 * by 'dnptrs'. Side effect is to update the list of pointers for
26541 * labels inserted into the message as we compress the name.
26542 * If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
26543 * is NULL, we don't update the list.
26544 */
26545 int
26546 dn_comp(exp_dn, comp_dn, length, dnptrs, lastdnptr)
26547 CONST u_char *exp_dn;
26548 u_char *comp_dn;
26549 int length;
26550 u_char **dnptrs, **lastdnptr;
26551 {
26552 register u_char *cp;
26553 register CONST u_char *dn;
26554 register int c, l;
26555 u_char **cpp, **lpp, *sp, *eob;
26556 u_char *msg;
26557
26558 dn = exp_dn;
26559 cp = comp_dn;
.Op 247 src/lib/ip/res_comp.c
26560 eob = cp + length;
26561 if (dnptrs != NULL) {
26562 if ((msg = *dnptrs++) != NULL) {
26563 for (cpp = dnptrs; *cpp != NULL; cpp++)
26564 ;
26565 lpp = cpp; /* end of list to search */
26566 }
26567 } else
26568 msg = NULL;
26569 for (c = *dn++; c != ''; ) {
26570 /* look to see if we can use pointers */
26571 if (msg != NULL) {
26572 if ((l = dn_find(dn-1, msg, dnptrs, lpp)) >= 0) {
26573 if (cp+1 >= eob)
26574 return (-1);
26575 *cp++ = (l >> 8) | INDIR_MASK;
26576 *cp++ = l % 256;
26577 return (cp - comp_dn);
26578 }
26579 /* not found, save it */
26580 if (lastdnptr != NULL && cpp < lastdnptr-1) {
26581 *cpp++ = cp;
26582 *cpp = NULL;
26583 }
26584 }
26585 sp = cp++; /* save ptr to length byte */
26586 do {
26587 if (c == '.') {
26588 c = *dn++;
26589 break;
26590 }
26591 if (c == '\') {
26592 if ((c = *dn++) == '')
26593 break;
26594 }
26595 if (cp >= eob) {
26596 if (msg != NULL)
26597 *lpp = NULL;
26598 return (-1);
26599 }
26600 *cp++ = c;
26601 } while ((c = *dn++) != '');
26602 /* catch trailing '.'s but not '..' */
26603 if ((l = cp - sp - 1) == 0 && c == '') {
26604 cp--;
26605 break;
26606 }
26607 if (l <= 0 || l > MAXLABEL) {
26608 if (msg != NULL)
26609 *lpp = NULL;
26610 return (-1);
26611 }
26612 *sp = l;
26613 }
26614 if (cp >= eob) {
26615 if (msg != NULL)
26616 *lpp = NULL;
26617 return (-1);
26618 }
26619 *cp++ = '';
.Ep 248 src/lib/ip/res_comp.c
26620 return (cp - comp_dn);
26621 }
26623 /*
26624 * Skip over a compressed domain name. Return the size or -1.
26625 */
26626 dn_skipname(comp_dn, eom)
26627 CONST u_char *comp_dn, *eom;
26628 {
26629 register CONST u_char *cp;
26630 register int n;
26631
26632 cp = comp_dn;
26633 while (cp < eom && (n = *cp++)) {
26634 /*
26635 * check for indirection
26636 */
26637 switch (n & INDIR_MASK) {
26638 case 0: /* normal case, n == len */
26639 cp += n;
26640 continue;
26641 default: /* illegal type */
26642 return (-1);
26643 case INDIR_MASK: /* indirection */
26644 cp++;
26645 }
26646 break;
26647 }
26648 return (cp - comp_dn);
26649 }
26651 /*
26652 * Search for expanded name from a list of previously compressed names.
26653 * Return the offset from msg if found or -1.
26654 * dnptrs is the pointer to the first name on the list,
26655 * not the pointer to the start of the message.
26656 */
26657 static int
26658 dn_find(exp_dn, msg, dnptrs, lastdnptr)
26659 CONST u_char *exp_dn, *msg;
26660 u_char **dnptrs, **lastdnptr;
26661 {
26662 CONST register u_char *dn, *cp;
26663 register u_char **cpp;
26664 register int n;
26665 CONST u_char *sp;
26666
26667 for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
26668 dn = exp_dn;
26669 sp = cp = *cpp;
26670 while (n = *cp++) {
26671 /*
26672 * check for indirection
26673 */
26674 switch (n & INDIR_MASK) {
26675 case 0: /* normal case, n == len */
26676 while (--n >= 0) {
26677 if (*dn == '.')
26678 goto next;
26679 if (*dn == '\')
.Op 249 src/lib/ip/res_comp.c
26680 dn++;
26681 if (*dn++ != *cp++)
26682 goto next;
26683 }
26684 if ((n = *dn++) == '' && *cp == '')
26685 return (sp - msg);
26686 if (n == '.')
26687 continue;
26688 goto next;
26689
26690 default: /* illegal type */
26691 return (-1);
26692
26693 case INDIR_MASK: /* indirection */
26694 cp = msg + (((n & 0x3f) << 8) | *cp);
26695 }
26696 }
26697 if (*dn == '')
26698 return (sp - msg);
26699 next: ;
26700 }
26701 return (-1);
26702 }
26704 /*
26705 * Routines to insert/extract short/long's. Must account for byte
26706 * order and non-alignment problems. This code at least has the
26707 * advantage of being portable.
26708 *
26709 * used by sendmail.
26710 */
26711
26712 u16_t
26713 getshort(msgp)
26714 CONST u8_t *msgp;
26715 {
26716 return ((msgp[0] << 8) | (msgp[1] << 0));
26717 }
26719 u32_t
26720 getlong(msgp)
26721 CONST u8_t *msgp;
26722 {
26723 return ( ((u32_t) msgp[0] << 24)
26724 | ((u32_t) msgp[1] << 16)
26725 | ((u32_t) msgp[2] << 8)
26726 | ((u32_t) msgp[3] << 0));
26727 }
26730 void
26731 putshort(s, msgp)
26732 register U16_t s;
26733 register u8_t *msgp;
26734 {
26735