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Commit3e32e94

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Patch that makes quoting "sameuser", "samegroup", and "all" remove
special meaning of these terms in pg_hba.conf.Also changes ugly pg_hba.conf IPv6 netmask offfff:ffff:ffff:ffff:ffff:ffff:ffff:ffff to ::1/128.Andrew Dunstan
1 parent1c757c4 commit3e32e94

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2 files changed

+35
-9
lines changed

2 files changed

+35
-9
lines changed

‎src/backend/libpq/hba.c‎

Lines changed: 29 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
1010
*
1111
*
1212
* IDENTIFICATION
13-
* $PostgreSQL: pgsql/src/backend/libpq/hba.c,v 1.118 2003/12/05 15:50:31 tgl Exp $
13+
* $PostgreSQL: pgsql/src/backend/libpq/hba.c,v 1.119 2003/12/25 03:44:04 momjian Exp $
1414
*
1515
*-------------------------------------------------------------------------
1616
*/
@@ -87,16 +87,19 @@ pg_isblank(const char c)
8787
* token or EOF, whichever comes first. If no more tokens on line,
8888
* return null string as *buf and position file to beginning of
8989
* next line or EOF, whichever comes first. Allow spaces in quoted
90-
* strings. Terminate on unquoted commas. Handle comments.
90+
* strings. Terminate on unquoted commas. Handle comments. Treat
91+
* unquoted keywords that might be user names or database names
92+
* specially, by appending a newline to them.
9193
*/
9294
void
9395
next_token(FILE*fp,char*buf,constintbufsz)
9496
{
9597
intc;
9698
char*start_buf=buf;
97-
char*end_buf=buf+ (bufsz-1);
99+
char*end_buf=buf+ (bufsz-2);
98100
boolin_quote= false;
99101
boolwas_quote= false;
102+
boolsaw_quote= false;
100103

101104
/* Move over initial whitespace and commas */
102105
while ((c=getc(fp))!=EOF&& (pg_isblank(c)||c==','))
@@ -149,7 +152,10 @@ next_token(FILE *fp, char *buf, const int bufsz)
149152
was_quote= false;
150153

151154
if (c=='"')
155+
{
152156
in_quote= !in_quote;
157+
saw_quote= true;
158+
}
153159

154160
c=getc(fp);
155161
}
@@ -161,7 +167,22 @@ next_token(FILE *fp, char *buf, const int bufsz)
161167
if (c!=EOF)
162168
ungetc(c,fp);
163169
}
170+
171+
172+
if ( !saw_quote&&
173+
(
174+
strncmp(start_buf,"all",3)==0||
175+
strncmp(start_buf,"sameuser",8)==0||
176+
strncmp(start_buf,"samegroup",9)==0
177+
)
178+
)
179+
{
180+
/* append newline to a magical keyword */
181+
*buf++='\n';
182+
}
183+
164184
*buf='\0';
185+
165186
}
166187

167188
/*
@@ -446,7 +467,7 @@ check_user(char *user, char *param_str)
446467
return true;
447468
}
448469
elseif (strcmp(tok,user)==0||
449-
strcmp(tok,"all")==0)
470+
strcmp(tok,"all\n")==0)
450471
return true;
451472
}
452473

@@ -463,14 +484,14 @@ check_db(char *dbname, char *user, char *param_str)
463484

464485
for (tok=strtok(param_str,MULTI_VALUE_SEP);tok!=NULL;tok=strtok(NULL,MULTI_VALUE_SEP))
465486
{
466-
if (strcmp(tok,"all")==0)
487+
if (strcmp(tok,"all\n")==0)
467488
return true;
468-
elseif (strcmp(tok,"sameuser")==0)
489+
elseif (strcmp(tok,"sameuser\n")==0)
469490
{
470491
if (strcmp(dbname,user)==0)
471492
return true;
472493
}
473-
elseif (strcmp(tok,"samegroup")==0)
494+
elseif (strcmp(tok,"samegroup\n")==0)
474495
{
475496
if (check_group(dbname,user))
476497
return true;
@@ -1068,7 +1089,7 @@ check_ident_usermap(const char *usermap_name,
10681089
errmsg("cannot use Ident authentication without usermap field")));
10691090
found_entry= false;
10701091
}
1071-
elseif (strcmp(usermap_name,"sameuser")==0)
1092+
elseif (strcmp(usermap_name,"sameuser\n")==0)
10721093
{
10731094
if (strcmp(pg_user,ident_user)==0)
10741095
found_entry= true;

‎src/backend/libpq/pg_hba.conf.sample‎

Lines changed: 6 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -35,6 +35,11 @@
3535
# encrypted passwords. OPTION is the ident map or the name of the PAM
3636
# service.
3737
#
38+
# Database and user names containing spaces, commas, quotes and other special
39+
# characters can be quoted. Quoting one of the keywords "all", "sameuser" or
40+
# "samegroup" makes the name lose its special character, and just match a
41+
# database or username with that name.
42+
#
3843
# This file is read on server startup and when the postmaster receives
3944
# a SIGHUP signal. If you edit the file on a running system, you have
4045
# to SIGHUP the postmaster for the changes to take effect, or use
@@ -59,4 +64,4 @@ local all all trust
5964
# IPv4-style local connections:
6065
host all all 127.0.0.1 255.255.255.255 trust
6166
# IPv6-style local connections:
62-
host all all ::1ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff trust
67+
host all all ::1/128 trust

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