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Commit6c19bd9

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committed
Allow pg_upgrade to honor libpq environment variables. Add 'local'
checks for PGHOST and PGHOSTADDR.
1 parent78b66cf commit6c19bd9

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7 files changed

+141
-130
lines changed

7 files changed

+141
-130
lines changed

‎contrib/pg_upgrade/controldata.c

Lines changed: 18 additions & 57 deletions
Original file line numberDiff line numberDiff line change
@@ -11,8 +11,6 @@
1111

1212
#include<ctype.h>
1313

14-
staticvoidputenv2(constchar*var,constchar*val);
15-
1614
/*
1715
* get_control_data()
1816
*
@@ -85,21 +83,21 @@ get_control_data(ClusterInfo *cluster, bool live_check)
8583
if (getenv("LC_MESSAGES"))
8684
lc_messages=pg_strdup(getenv("LC_MESSAGES"));
8785

88-
putenv2("LC_COLLATE",NULL);
89-
putenv2("LC_CTYPE",NULL);
90-
putenv2("LC_MONETARY",NULL);
91-
putenv2("LC_NUMERIC",NULL);
92-
putenv2("LC_TIME",NULL);
93-
putenv2("LANG",
86+
pg_putenv("LC_COLLATE",NULL);
87+
pg_putenv("LC_CTYPE",NULL);
88+
pg_putenv("LC_MONETARY",NULL);
89+
pg_putenv("LC_NUMERIC",NULL);
90+
pg_putenv("LC_TIME",NULL);
91+
pg_putenv("LANG",
9492
#ifndefWIN32
9593
NULL);
9694
#else
9795
/* On Windows the default locale cannot be English, so force it */
9896
"en");
9997
#endif
100-
putenv2("LANGUAGE",NULL);
101-
putenv2("LC_ALL",NULL);
102-
putenv2("LC_MESSAGES","C");
98+
pg_putenv("LANGUAGE",NULL);
99+
pg_putenv("LC_ALL",NULL);
100+
pg_putenv("LC_MESSAGES","C");
103101

104102
snprintf(cmd,sizeof(cmd),SYSTEMQUOTE"\"%s/%s \"%s\""SYSTEMQUOTE,
105103
cluster->bindir,
@@ -374,15 +372,15 @@ get_control_data(ClusterInfo *cluster, bool live_check)
374372
/*
375373
* Restore environment variables
376374
*/
377-
putenv2("LC_COLLATE",lc_collate);
378-
putenv2("LC_CTYPE",lc_ctype);
379-
putenv2("LC_MONETARY",lc_monetary);
380-
putenv2("LC_NUMERIC",lc_numeric);
381-
putenv2("LC_TIME",lc_time);
382-
putenv2("LANG",lang);
383-
putenv2("LANGUAGE",language);
384-
putenv2("LC_ALL",lc_all);
385-
putenv2("LC_MESSAGES",lc_messages);
375+
pg_putenv("LC_COLLATE",lc_collate);
376+
pg_putenv("LC_CTYPE",lc_ctype);
377+
pg_putenv("LC_MONETARY",lc_monetary);
378+
pg_putenv("LC_NUMERIC",lc_numeric);
379+
pg_putenv("LC_TIME",lc_time);
380+
pg_putenv("LANG",lang);
381+
pg_putenv("LANGUAGE",language);
382+
pg_putenv("LC_ALL",lc_all);
383+
pg_putenv("LC_MESSAGES",lc_messages);
386384

387385
pg_free(lc_collate);
388386
pg_free(lc_ctype);
@@ -529,40 +527,3 @@ rename_old_pg_control(void)
529527
pg_log(PG_FATAL,"Unable to rename %s to %s.\n",old_path,new_path);
530528
check_ok();
531529
}
532-
533-
534-
/*
535-
*putenv2()
536-
*
537-
*This is like putenv(), but takes two arguments.
538-
*It also does unsetenv() if val is NULL.
539-
*/
540-
staticvoid
541-
putenv2(constchar*var,constchar*val)
542-
{
543-
if (val)
544-
{
545-
#ifndefWIN32
546-
char*envstr= (char*)pg_malloc(strlen(var)+
547-
strlen(val)+2);
548-
549-
sprintf(envstr,"%s=%s",var,val);
550-
putenv(envstr);
551-
552-
/*
553-
* Do not free envstr because it becomes part of the environment on
554-
* some operating systems.See port/unsetenv.c::unsetenv.
555-
*/
556-
#else
557-
SetEnvironmentVariableA(var,val);
558-
#endif
559-
}
560-
else
561-
{
562-
#ifndefWIN32
563-
unsetenv(var);
564-
#else
565-
SetEnvironmentVariableA(var,"");
566-
#endif
567-
}
568-
}

‎contrib/pg_upgrade/option.c

Lines changed: 31 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -53,23 +53,24 @@ parseCommandLine(int argc, char *argv[])
5353
};
5454
intoption;/* Command line option */
5555
intoptindex=0;/* used by getopt_long */
56-
intuser_id;
56+
intos_user_effective_id;
5757

58-
if (getenv("PGUSER"))
59-
{
60-
pg_free(os_info.user);
61-
os_info.user=pg_strdup(getenv("PGUSER"));
62-
}
58+
user_opts.transfer_mode=TRANSFER_MODE_COPY;
6359

6460
os_info.progname=get_progname(argv[0]);
61+
62+
/* Process libpq env. variables; load values here for usage() output */
6563
old_cluster.port=getenv("PGPORT") ?atoi(getenv("PGPORT")) :DEF_PGPORT;
6664
new_cluster.port=getenv("PGPORT") ?atoi(getenv("PGPORT")) :DEF_PGPORT;
67-
/* must save value, getenv()'s pointer is not stable */
6865

69-
user_opts.transfer_mode=TRANSFER_MODE_COPY;
70-
71-
/* user lookup and 'root' test must be split because of usage() */
72-
user_id=get_user_info(&os_info.user);
66+
os_user_effective_id=get_user_info(&os_info.user);
67+
/* we override just the database user name; we got the OS id above */
68+
if (getenv("PGUSER"))
69+
{
70+
pg_free(os_info.user);
71+
/* must save value, getenv()'s pointer is not stable */
72+
os_info.user=pg_strdup(getenv("PGUSER"));
73+
}
7374

7475
if (argc>1)
7576
{
@@ -86,7 +87,8 @@ parseCommandLine(int argc, char *argv[])
8687
}
8788
}
8889

89-
if (user_id==0)
90+
/* Allow help and version to be run as root, so do the test here. */
91+
if (os_user_effective_id==0)
9092
pg_log(PG_FATAL,"%s: cannot be run as root\n",os_info.progname);
9193

9294
getcwd(os_info.cwd,MAXPGPATH);
@@ -96,14 +98,6 @@ parseCommandLine(int argc, char *argv[])
9698
{
9799
switch (option)
98100
{
99-
case'd':
100-
old_cluster.pgdata=pg_strdup(optarg);
101-
break;
102-
103-
case'D':
104-
new_cluster.pgdata=pg_strdup(optarg);
105-
break;
106-
107101
case'b':
108102
old_cluster.bindir=pg_strdup(optarg);
109103
break;
@@ -116,6 +110,14 @@ parseCommandLine(int argc, char *argv[])
116110
user_opts.check= true;
117111
break;
118112

113+
case'd':
114+
old_cluster.pgdata=pg_strdup(optarg);
115+
break;
116+
117+
case'D':
118+
new_cluster.pgdata=pg_strdup(optarg);
119+
break;
120+
119121
case'g':
120122
pg_log(PG_REPORT,"Running in debug mode\n");
121123
log_opts.debug= true;
@@ -156,6 +158,11 @@ parseCommandLine(int argc, char *argv[])
156158
case'u':
157159
pg_free(os_info.user);
158160
os_info.user=pg_strdup(optarg);
161+
/*
162+
* Push the user name into the environment so pre-9.1
163+
* pg_ctl/libpq uses it.
164+
*/
165+
pg_putenv("PGUSER",os_info.user);
159166
break;
160167

161168
case'v':
@@ -197,14 +204,14 @@ parseCommandLine(int argc, char *argv[])
197204
}
198205

199206
/* Get values from env if not already set */
200-
validateDirectoryOption(&old_cluster.pgdata,"OLDDATADIR","-d",
201-
"old cluster data resides");
202-
validateDirectoryOption(&new_cluster.pgdata,"NEWDATADIR","-D",
203-
"new cluster data resides");
204207
validateDirectoryOption(&old_cluster.bindir,"OLDBINDIR","-b",
205208
"old cluster binaries reside");
206209
validateDirectoryOption(&new_cluster.bindir,"NEWBINDIR","-B",
207210
"new cluster binaries reside");
211+
validateDirectoryOption(&old_cluster.pgdata,"OLDDATADIR","-d",
212+
"old cluster data resides");
213+
validateDirectoryOption(&new_cluster.pgdata,"NEWDATADIR","-D",
214+
"new cluster data resides");
208215

209216
get_pkglibdirs();
210217
}

‎contrib/pg_upgrade/pg_upgrade.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -149,7 +149,7 @@ setup(char *argv0, bool live_check)
149149
* make sure the user has a clean environment, otherwise, we may confuse
150150
* libpq when we connect to one (or both) of the servers.
151151
*/
152-
check_for_libpq_envvars();
152+
check_pghost_envvar();
153153

154154
verify_directories();
155155

‎contrib/pg_upgrade/pg_upgrade.h

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -361,7 +361,7 @@ PGresult *executeQueryOrDie(PGconn *conn, const char *fmt,...);
361361
voidstart_postmaster(ClusterInfo*cluster);
362362
voidstop_postmaster(boolfast);
363363
uint32get_major_server_version(ClusterInfo*cluster);
364-
voidcheck_for_libpq_envvars(void);
364+
voidcheck_pghost_envvar(void);
365365

366366

367367
/* util.c */
@@ -378,6 +378,7 @@ void *pg_malloc(int size);
378378
voidpg_free(void*ptr);
379379
constchar*getErrorText(interrNum);
380380
unsignedintstr2uint(constchar*str);
381+
voidpg_putenv(constchar*var,constchar*val);
381382

382383

383384
/* version.c */

‎contrib/pg_upgrade/server.c

Lines changed: 25 additions & 28 deletions
Original file line numberDiff line numberDiff line change
@@ -145,6 +145,7 @@ start_postmaster(ClusterInfo *cluster)
145145
charcmd[MAXPGPATH];
146146
PGconn*conn;
147147
boolexit_hook_registered= false;
148+
intpg_ctl_return=0;
148149
#ifndefWIN32
149150
char*output_filename=log_opts.filename;
150151
#else
@@ -183,7 +184,11 @@ start_postmaster(ClusterInfo *cluster)
183184
"-c autovacuum=off -c autovacuum_freeze_max_age=2000000000",
184185
log_opts.filename);
185186

186-
exec_prog(true,"%s",cmd);
187+
/*
188+
* Don't throw an error right away, let connecting throw the error
189+
* because it might supply a reason for the failure.
190+
*/
191+
pg_ctl_return=exec_prog(false,"%s",cmd);
187192

188193
/* Check to see if we can connect to the server; if not, report it. */
189194
if ((conn=get_db_conn(cluster,"template1"))==NULL||
@@ -198,6 +203,11 @@ start_postmaster(ClusterInfo *cluster)
198203
}
199204
PQfinish(conn);
200205

206+
/* If the connection didn't fail, fail now */
207+
if (pg_ctl_return!=0)
208+
pg_log(PG_FATAL,"pg_ctl failed to start the %s server\n",
209+
CLUSTER_NAME(cluster));
210+
201211
os_info.running_cluster=cluster;
202212
}
203213

@@ -241,50 +251,37 @@ stop_postmaster(bool fast)
241251

242252

243253
/*
244-
*check_for_libpq_envvars()
254+
*check_pghost_envvar()
245255
*
246-
* tests whether any libpq environment variables are set.
247-
* Since pg_upgrade connects to both the old and the new server,
248-
* it is potentially dangerous to have any of these set.
249-
*
250-
* If any are found, will log them and cancel.
256+
* Tests that PGHOST does not point to a non-local server
251257
*/
252258
void
253-
check_for_libpq_envvars(void)
259+
check_pghost_envvar(void)
254260
{
255261
PQconninfoOption*option;
256262
PQconninfoOption*start;
257-
boolfound= false;
258263

259264
/* Get valid libpq env vars from the PQconndefaults function */
260265

261266
start=PQconndefaults();
262267

263268
for (option=start;option->keyword!=NULL;option++)
264269
{
265-
if (option->envvar)
270+
if (option->envvar&& (strcmp(option->envvar,"PGHOST")==0||
271+
strcmp(option->envvar,"PGHOSTADDR")==0))
266272
{
267-
constchar*value;
268-
269-
/* This allows us to see error messages in the local encoding */
270-
if (strcmp(option->envvar,"PGCLIENTENCODING")==0)
271-
continue;
272-
273-
value=getenv(option->envvar);
274-
if (value&&strlen(value)>0)
275-
{
276-
found= true;
277-
278-
pg_log(PG_WARNING,
279-
"libpq env var %-20s is currently set to: %s\n",option->envvar,value);
280-
}
273+
constchar*value=getenv(option->envvar);
274+
275+
if (value&&strlen(value)>0&&
276+
/* check for 'local' host values */
277+
(strcmp(value,"localhost")!=0&&strcmp(value,"127.0.0.1")!=0&&
278+
strcmp(value,"::1")!=0&&value[0]!='/'))
279+
pg_log(PG_FATAL,
280+
"libpq environment variable %s has a non-local server value: %s\n",
281+
option->envvar,value);
281282
}
282283
}
283284

284285
/* Free the memory that libpq allocated on our behalf */
285286
PQconninfoFree(start);
286-
287-
if (found)
288-
pg_log(PG_FATAL,
289-
"libpq env vars have been found and listed above, please unset them for pg_upgrade\n");
290287
}

‎contrib/pg_upgrade/util.c

Lines changed: 38 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -244,3 +244,41 @@ str2uint(const char *str)
244244
{
245245
returnstrtoul(str,NULL,10);
246246
}
247+
248+
249+
/*
250+
*pg_putenv()
251+
*
252+
*This is like putenv(), but takes two arguments.
253+
*It also does unsetenv() if val is NULL.
254+
*/
255+
void
256+
pg_putenv(constchar*var,constchar*val)
257+
{
258+
if (val)
259+
{
260+
#ifndefWIN32
261+
char*envstr= (char*)pg_malloc(strlen(var)+
262+
strlen(val)+2);
263+
264+
sprintf(envstr,"%s=%s",var,val);
265+
putenv(envstr);
266+
267+
/*
268+
* Do not free envstr because it becomes part of the environment on
269+
* some operating systems.See port/unsetenv.c::unsetenv.
270+
*/
271+
#else
272+
SetEnvironmentVariableA(var,val);
273+
#endif
274+
}
275+
else
276+
{
277+
#ifndefWIN32
278+
unsetenv(var);
279+
#else
280+
SetEnvironmentVariableA(var,"");
281+
#endif
282+
}
283+
}
284+

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