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Commit9ac0c1e

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committed
CIDR/INET fixes from D'Arcy.
1 parent7787d75 commit9ac0c1e

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4 files changed

+267
-77
lines changed

4 files changed

+267
-77
lines changed

‎src/backend/utils/adt/inet.c‎

Lines changed: 42 additions & 58 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
33
*is for IP V4 CIDR notation, but prepared for V6: just
44
*add the necessary bits where the comments indicate.
55
*
6-
*$Id: inet.c,v 1.11 1998/10/2204:58:07 momjian Exp $
6+
*$Id: inet.c,v 1.12 1998/10/2213:16:23 momjian Exp $
77
*Jon Postel RIP 16 Oct 1998
88
*/
99

@@ -43,12 +43,9 @@ static intv4bitncmp(unsigned int a1, unsigned int a2, int bits);
4343
#defineip_v4addr(inetptr) \
4444
(((inet_struct *)VARDATA(inetptr))->addr.ipv4_addr)
4545

46-
/*
47-
*INET address reader.
48-
*/
49-
50-
inet*
51-
inet_in(char*src)
46+
/* Common input routine */
47+
staticinet*
48+
inet_common_in(char*src,inttype)
5249
{
5350
intbits;
5451
inet*dst;
@@ -57,24 +54,39 @@ inet_in(char *src)
5754
if (dst==NULL)
5855
{
5956
elog(ERROR,"unable to allocate memory in inet_in()");
60-
return(NULL);
57+
returnNULL;
6158
}
6259
/* First, try for an IP V4 address: */
6360
ip_family(dst)=AF_INET;
64-
bits=inet_net_pton(ip_family(dst),src,&ip_v4addr(dst),ip_addrsize(dst));
61+
bits=inet_net_pton(ip_family(dst),src,&ip_v4addr(dst),
62+
type ?ip_addrsize(dst) :-1);
6563
if ((bits<0)|| (bits>32))
6664
{
6765
/* Go for an IPV6 address here, before faulting out: */
6866
elog(ERROR,"could not parse \"%s\"",src);
6967
pfree(dst);
70-
return(NULL);
68+
returnNULL;
7169
}
7270
VARSIZE(dst)=VARHDRSZ
7371
+ ((char*)&ip_v4addr(dst)- (char*)VARDATA(dst))
7472
+ip_addrsize(dst);
7573
ip_bits(dst)=bits;
76-
ip_type(dst)=0;
77-
return (dst);
74+
ip_type(dst)=type;
75+
returndst;
76+
}
77+
78+
/* INET address reader. */
79+
inet*
80+
inet_in(char*src)
81+
{
82+
returninet_common_in(src,0);
83+
}
84+
85+
/* CIDR address reader. */
86+
inet*
87+
cidr_in(char*src)
88+
{
89+
returninet_common_in(src,1);
7890
}
7991

8092
/*
@@ -90,8 +102,14 @@ inet_out(inet *src)
90102
if (ip_family(src)==AF_INET)
91103
{
92104
/* It's an IP V4 address: */
93-
if (inet_net_ntop(AF_INET,&ip_v4addr(src),ip_bits(src),
94-
tmp,sizeof(tmp))<0)
105+
if (ip_type(src))
106+
dst=inet_cidr_ntop(AF_INET,&ip_v4addr(src),ip_bits(src),
107+
tmp,sizeof(tmp));
108+
else
109+
dst=inet_net_ntop(AF_INET,&ip_v4addr(src),ip_bits(src),
110+
tmp,sizeof(tmp));
111+
112+
if (dst==NULL)
95113
{
96114
elog(ERROR,"unable to print address (%s)",strerror(errno));
97115
return (NULL);
@@ -101,52 +119,18 @@ inet_out(inet *src)
101119
{
102120
/* Go for an IPV6 address here, before faulting out: */
103121
elog(ERROR,"unknown address family (%d)",ip_family(src));
104-
return(NULL);
122+
returnNULL;
105123
}
106-
if (ip_type(src)==0&&ip_bits(src)==32&& (dst=strchr(tmp,'/'))!=NULL)
107-
*dst=0;
108124
dst=palloc(strlen(tmp)+1);
109125
if (dst==NULL)
110126
{
111127
elog(ERROR,"unable to allocate memory in inet_out()");
112-
return(NULL);
128+
returnNULL;
113129
}
114130
strcpy(dst,tmp);
115-
return(dst);
131+
returndst;
116132
}
117133

118-
/*
119-
*CIDR uses all of INET's funcs, just has a separate input func.
120-
*/
121-
122-
inet*
123-
cidr_in(char*src)
124-
{
125-
intbits;
126-
inet*dst;
127-
128-
dst=palloc(VARHDRSZ+sizeof(inet_struct));
129-
if (dst==NULL)
130-
{
131-
elog(ERROR,"unable to allocate memory in cidr_in()");
132-
return (NULL);
133-
}
134-
/* First, try for an IP V4 address: */
135-
ip_family(dst)=AF_INET;
136-
bits=inet_net_pton(ip_family(dst),src,&ip_v4addr(dst),ip_addrsize(dst));
137-
if ((bits<0)|| (bits>32))
138-
{
139-
/* Go for an IPV6 address here, before faulting out: */
140-
elog(ERROR,"could not parse \"%s\"",src);
141-
pfree(dst);
142-
return (NULL);
143-
}
144-
VARSIZE(dst)=VARHDRSZ
145-
+ ((char*)&ip_v4addr(dst)- (char*)VARDATA(dst))
146-
+ip_addrsize(dst);
147-
ip_bits(dst)=bits;
148-
return (dst);
149-
}
150134

151135
/* just a stub */
152136
char*
@@ -331,7 +315,7 @@ inet_host(inet *ip)
331315
/* It's an IP V4 address: */
332316
if (inet_net_ntop(AF_INET,&ip_v4addr(ip),32,tmp,sizeof(tmp))<0)
333317
{
334-
elog(ERROR,"unable to printnetmask (%s)",strerror(errno));
318+
elog(ERROR,"unable to printhost (%s)",strerror(errno));
335319
return (NULL);
336320
}
337321
}
@@ -343,7 +327,7 @@ inet_host(inet *ip)
343327
}
344328
if ((ptr=strchr(tmp,'/'))!=NULL)
345329
*ptr=0;
346-
len=VARHDRSZ+strlen(tmp);
330+
len=VARHDRSZ+strlen(tmp)+1;
347331
ret=palloc(len);
348332
if (ret==NULL)
349333
{
@@ -358,7 +342,7 @@ inet_host(inet *ip)
358342
text*
359343
cidr_host(inet*ip)
360344
{
361-
inet_host(ip);
345+
returninet_host(ip);
362346
}
363347

364348
int4
@@ -402,7 +386,7 @@ inet_broadcast(inet *ip)
402386
}
403387
if ((ptr=strchr(tmp,'/'))!=NULL)
404388
*ptr=0;
405-
len=VARHDRSZ+strlen(tmp);
389+
len=VARHDRSZ+strlen(tmp)+1;
406390
ret=palloc(len);
407391
if (ret==NULL)
408392
{
@@ -417,7 +401,7 @@ inet_broadcast(inet *ip)
417401
text*
418402
cidr_broadcast(inet*ip)
419403
{
420-
inet_broadcast(ip);
404+
returninet_broadcast(ip);
421405
}
422406

423407
text*
@@ -447,7 +431,7 @@ inet_netmask(inet *ip)
447431
}
448432
if ((ptr=strchr(tmp,'/'))!=NULL)
449433
*ptr=0;
450-
len=VARHDRSZ+strlen(tmp);
434+
len=VARHDRSZ+strlen(tmp)+1;
451435
ret=palloc(len);
452436
if (ret==NULL)
453437
{
@@ -462,7 +446,7 @@ inet_netmask(inet *ip)
462446
text*
463447
cidr_netmask(inet*ip)
464448
{
465-
inet_netmask(ip);
449+
returninet_netmask(ip);
466450
}
467451

468452
/*

‎src/backend/utils/adt/inet_net_ntop.c‎

Lines changed: 105 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -16,7 +16,7 @@
1616
*/
1717

1818
#if defined(LIBC_SCCS)&& !defined(lint)
19-
staticconstcharrcsid[]="$Id: inet_net_ntop.c,v 1.2 1998/10/04 15:35:08 momjian Exp $";
19+
staticconstcharrcsid[]="$Id: inet_net_ntop.c,v 1.3 1998/10/22 13:16:25 momjian Exp $";
2020

2121
#endif
2222

@@ -41,10 +41,12 @@ static const char rcsid[] = "$Id: inet_net_ntop.c,v 1.2 1998/10/04 15:35:08 momj
4141

4242
staticchar*inet_net_ntop_ipv4(constu_char*src,intbits,
4343
char*dst,size_tsize);
44+
staticchar*inet_cidr_ntop_ipv4(constu_char*src,intbits,
45+
char*dst,size_tsize);
4446

4547
/*
4648
* char *
47-
*inet_net_ntop(af, src, bits, dst, size)
49+
*inet_cidr_ntop(af, src, bits, dst, size)
4850
*convert network number from network to presentation format.
4951
*generates CIDR style result always.
5052
* return:
@@ -53,21 +55,22 @@ static char *inet_net_ntop_ipv4(const u_char *src, int bits,
5355
*Paul Vixie (ISC), July 1996
5456
*/
5557
char*
56-
inet_net_ntop(intaf,constvoid*src,intbits,char*dst,size_tsize)
58+
inet_cidr_ntop(intaf,constvoid*src,intbits,char*dst,size_tsize)
5759
{
5860
switch (af)
5961
{
6062
caseAF_INET:
61-
return (inet_net_ntop_ipv4(src,bits,dst,size));
63+
return (inet_cidr_ntop_ipv4(src,bits,dst,size));
6264
default:
6365
errno=EAFNOSUPPORT;
6466
return (NULL);
6567
}
6668
}
6769

70+
6871
/*
6972
* static char *
70-
*inet_net_ntop_ipv4(src, bits, dst, size)
73+
*inet_cidr_ntop_ipv4(src, bits, dst, size)
7174
*convert IPv4 network number from network to presentation format.
7275
*generates CIDR style result always.
7376
* return:
@@ -79,7 +82,7 @@ inet_net_ntop(int af, const void *src, int bits, char *dst, size_t size)
7982
*Paul Vixie (ISC), July 1996
8083
*/
8184
staticchar*
82-
inet_net_ntop_ipv4(constu_char*src,intbits,char*dst,size_tsize)
85+
inet_cidr_ntop_ipv4(constu_char*src,intbits,char*dst,size_tsize)
8386
{
8487
char*odst=dst;
8588
char*t;
@@ -138,3 +141,99 @@ inet_net_ntop_ipv4(const u_char *src, int bits, char *dst, size_t size)
138141
errno=EMSGSIZE;
139142
return (NULL);
140143
}
144+
145+
146+
/*
147+
* char *
148+
* inet_net_ntop(af, src, bits, dst, size)
149+
*convert host/network address from network to presentation format.
150+
*"src"'s size is determined from its "af".
151+
* return:
152+
*pointer to dst, or NULL if an error occurred (check errno).
153+
* note:
154+
*192.5.5.1/28 has a nonzero host part, which means it isn't a network
155+
*as called for by inet_net_pton() but it can be a host address with
156+
*an included netmask.
157+
* author:
158+
*Paul Vixie (ISC), October 1998
159+
*/
160+
char*
161+
inet_net_ntop(intaf,constvoid*src,intbits,char*dst,size_tsize)
162+
{
163+
switch (af)
164+
{
165+
caseAF_INET:
166+
return (inet_net_ntop_ipv4(src,bits,dst,size));
167+
default:
168+
errno=EAFNOSUPPORT;
169+
return (NULL);
170+
}
171+
}
172+
173+
/*
174+
* static char *
175+
* inet_net_ntop_ipv4(src, bits, dst, size)
176+
*convert IPv4 network address from network to presentation format.
177+
*"src"'s size is determined from its "af".
178+
* return:
179+
*pointer to dst, or NULL if an error occurred (check errno).
180+
* note:
181+
*network byte order assumed. this means 192.5.5.240/28 has
182+
*0b11110000 in its fourth octet.
183+
* author:
184+
*Paul Vixie (ISC), October 1998
185+
*/
186+
staticchar*
187+
inet_net_ntop_ipv4(constu_char*src,intbits,char*dst,size_tsize)
188+
{
189+
char*odst=dst;
190+
char*t;
191+
size_tlen=4;
192+
u_intm;
193+
intb,tb;
194+
195+
if (bits<0||bits>32)
196+
{
197+
errno=EINVAL;
198+
return (NULL);
199+
}
200+
if (bits==0)
201+
{
202+
if (size<sizeof"0")
203+
gotoemsgsize;
204+
*dst++='0';
205+
size--;
206+
*dst='\0';
207+
}
208+
209+
/* Format whole octets plus nonzero trailing octets. */
210+
tb= (bits==32) ?31 :bits;
211+
for (b=0;b <= (tb /8)|| (b<len&&*src!=0);b++)
212+
{
213+
if (size<sizeof"255.")
214+
gotoemsgsize;
215+
t=dst;
216+
dst+=SPRINTF((dst,"%u",*src++));
217+
if (b+1 <= (tb /8)|| (b+1<len&&*src!=0))
218+
{
219+
*dst++='.';
220+
*dst='\0';
221+
}
222+
size-= (size_t)(dst-t);
223+
}
224+
225+
/* don't print masklen if 32 bits */
226+
if (bits==32)
227+
returnodst;
228+
229+
/* Format CIDR /width. */
230+
if (size<sizeof"/32")
231+
gotoemsgsize;
232+
dst+=SPRINTF((dst,"/%u",bits));
233+
234+
return (odst);
235+
236+
emsgsize:
237+
errno=EMSGSIZE;
238+
return (NULL);
239+
}

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