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Allow pg_upgrade to honor libpq environment variables. Add 'local'

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checks for PGHOST and PGHOSTADDR.
This commit is contained in:
Bruce Momjian 2011-05-16 10:46:52 -04:00
parent 78b66cff72
commit 6c19bd96bc
7 changed files with 143 additions and 132 deletions
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75
contrib/pg_upgrade/controldata.c
View File

@ -11,8 +11,6 @@
#include <ctype.h>
static void putenv2(const char *var, const char *val);
/*
* get_control_data()
*
@ -85,21 +83,21 @@ get_control_data(ClusterInfo *cluster, bool live_check)
if (getenv("LC_MESSAGES"))
lc_messages = pg_strdup(getenv("LC_MESSAGES"));
putenv2("LC_COLLATE", NULL);
putenv2("LC_CTYPE", NULL);
putenv2("LC_MONETARY", NULL);
putenv2("LC_NUMERIC", NULL);
putenv2("LC_TIME", NULL);
putenv2("LANG",
pg_putenv("LC_COLLATE", NULL);
pg_putenv("LC_CTYPE", NULL);
pg_putenv("LC_MONETARY", NULL);
pg_putenv("LC_NUMERIC", NULL);
pg_putenv("LC_TIME", NULL);
pg_putenv("LANG",
#ifndef WIN32
NULL);
#else
/* On Windows the default locale cannot be English, so force it */
"en");
#endif
putenv2("LANGUAGE", NULL);
putenv2("LC_ALL", NULL);
putenv2("LC_MESSAGES", "C");
pg_putenv("LANGUAGE", NULL);
pg_putenv("LC_ALL", NULL);
pg_putenv("LC_MESSAGES", "C");
snprintf(cmd, sizeof(cmd), SYSTEMQUOTE "\"%s/%s \"%s\"" SYSTEMQUOTE,
cluster->bindir,
@ -374,15 +372,15 @@ get_control_data(ClusterInfo *cluster, bool live_check)
/*
* Restore environment variables
*/
putenv2("LC_COLLATE", lc_collate);
putenv2("LC_CTYPE", lc_ctype);
putenv2("LC_MONETARY", lc_monetary);
putenv2("LC_NUMERIC", lc_numeric);
putenv2("LC_TIME", lc_time);
putenv2("LANG", lang);
putenv2("LANGUAGE", language);
putenv2("LC_ALL", lc_all);
putenv2("LC_MESSAGES", lc_messages);
pg_putenv("LC_COLLATE", lc_collate);
pg_putenv("LC_CTYPE", lc_ctype);
pg_putenv("LC_MONETARY", lc_monetary);
pg_putenv("LC_NUMERIC", lc_numeric);
pg_putenv("LC_TIME", lc_time);
pg_putenv("LANG", lang);
pg_putenv("LANGUAGE", language);
pg_putenv("LC_ALL", lc_all);
pg_putenv("LC_MESSAGES", lc_messages);
pg_free(lc_collate);
pg_free(lc_ctype);
@ -529,40 +527,3 @@ rename_old_pg_control(void)
pg_log(PG_FATAL, "Unable to rename %s to %s.\n", old_path, new_path);
check_ok();
}
/*
* putenv2()
*
* This is like putenv(), but takes two arguments.
* It also does unsetenv() if val is NULL.
*/
static void
putenv2(const char *var, const char *val)
{
if (val)
{
#ifndef WIN32
char *envstr = (char *) pg_malloc(strlen(var) +
strlen(val) + 2);
sprintf(envstr, "%s=%s", var, val);
putenv(envstr);
/*
* Do not free envstr because it becomes part of the environment on
* some operating systems. See port/unsetenv.c::unsetenv.
*/
#else
SetEnvironmentVariableA(var, val);
#endif
}
else
{
#ifndef WIN32
unsetenv(var);
#else
SetEnvironmentVariableA(var, "");
#endif
}
}

61
contrib/pg_upgrade/option.c
View File

@ -53,23 +53,24 @@ parseCommandLine(int argc, char *argv[])
};
int option; /* Command line option */
int optindex = 0; /* used by getopt_long */
int user_id;
if (getenv("PGUSER"))
{
pg_free(os_info.user);
os_info.user = pg_strdup(getenv("PGUSER"));
}
os_info.progname = get_progname(argv[0]);
old_cluster.port = getenv("PGPORT") ? atoi(getenv("PGPORT")) : DEF_PGPORT;
new_cluster.port = getenv("PGPORT") ? atoi(getenv("PGPORT")) : DEF_PGPORT;
/* must save value, getenv()'s pointer is not stable */
int os_user_effective_id;
user_opts.transfer_mode = TRANSFER_MODE_COPY;
/* user lookup and 'root' test must be split because of usage() */
user_id = get_user_info(&os_info.user);
os_info.progname = get_progname(argv[0]);
/* Process libpq env. variables; load values here for usage() output */
old_cluster.port = getenv("PGPORT") ? atoi(getenv("PGPORT")) : DEF_PGPORT;
new_cluster.port = getenv("PGPORT") ? atoi(getenv("PGPORT")) : DEF_PGPORT;
os_user_effective_id = get_user_info(&os_info.user);
/* we override just the database user name; we got the OS id above */
if (getenv("PGUSER"))
{
pg_free(os_info.user);
/* must save value, getenv()'s pointer is not stable */
os_info.user = pg_strdup(getenv("PGUSER"));
}
if (argc > 1)
{
@ -86,7 +87,8 @@ parseCommandLine(int argc, char *argv[])
}
}
if (user_id == 0)
/* Allow help and version to be run as root, so do the test here. */
if (os_user_effective_id == 0)
pg_log(PG_FATAL, "%s: cannot be run as root\n", os_info.progname);
getcwd(os_info.cwd, MAXPGPATH);
@ -96,14 +98,6 @@ parseCommandLine(int argc, char *argv[])
{
switch (option)
{
case 'd':
old_cluster.pgdata = pg_strdup(optarg);
break;
case 'D':
new_cluster.pgdata = pg_strdup(optarg);
break;
case 'b':
old_cluster.bindir = pg_strdup(optarg);
break;
@ -116,6 +110,14 @@ parseCommandLine(int argc, char *argv[])
user_opts.check = true;
break;
case 'd':
old_cluster.pgdata = pg_strdup(optarg);
break;
case 'D':
new_cluster.pgdata = pg_strdup(optarg);
break;
case 'g':
pg_log(PG_REPORT, "Running in debug mode\n");
log_opts.debug = true;
@ -156,6 +158,11 @@ parseCommandLine(int argc, char *argv[])
case 'u':
pg_free(os_info.user);
os_info.user = pg_strdup(optarg);
/*
* Push the user name into the environment so pre-9.1
* pg_ctl/libpq uses it.
*/
pg_putenv("PGUSER", os_info.user);
break;
case 'v':
@ -197,14 +204,14 @@ parseCommandLine(int argc, char *argv[])
}
/* Get values from env if not already set */
validateDirectoryOption(&old_cluster.pgdata, "OLDDATADIR", "-d",
"old cluster data resides");
validateDirectoryOption(&new_cluster.pgdata, "NEWDATADIR", "-D",
"new cluster data resides");
validateDirectoryOption(&old_cluster.bindir, "OLDBINDIR", "-b",
"old cluster binaries reside");
validateDirectoryOption(&new_cluster.bindir, "NEWBINDIR", "-B",
"new cluster binaries reside");
validateDirectoryOption(&old_cluster.pgdata, "OLDDATADIR", "-d",
"old cluster data resides");
validateDirectoryOption(&new_cluster.pgdata, "NEWDATADIR", "-D",
"new cluster data resides");
get_pkglibdirs();
}

2
contrib/pg_upgrade/pg_upgrade.c
View File

@ -149,7 +149,7 @@ setup(char *argv0, bool live_check)
* make sure the user has a clean environment, otherwise, we may confuse
* libpq when we connect to one (or both) of the servers.
*/
check_for_libpq_envvars();
check_pghost_envvar();
verify_directories();

3
contrib/pg_upgrade/pg_upgrade.h
View File

@ -361,7 +361,7 @@ PGresult *executeQueryOrDie(PGconn *conn, const char *fmt,...);
void start_postmaster(ClusterInfo *cluster);
void stop_postmaster(bool fast);
uint32 get_major_server_version(ClusterInfo *cluster);
void check_for_libpq_envvars(void);
void check_pghost_envvar(void);
/* util.c */
@ -378,6 +378,7 @@ void *pg_malloc(int size);
void pg_free(void *ptr);
const char *getErrorText(int errNum);
unsigned int str2uint(const char *str);
void pg_putenv(const char *var, const char *val);
/* version.c */

51
contrib/pg_upgrade/server.c
View File

@ -145,6 +145,7 @@ start_postmaster(ClusterInfo *cluster)
char cmd[MAXPGPATH];
PGconn *conn;
bool exit_hook_registered = false;
int pg_ctl_return = 0;
#ifndef WIN32
char *output_filename = log_opts.filename;
#else
@ -183,7 +184,11 @@ start_postmaster(ClusterInfo *cluster)
"-c autovacuum=off -c autovacuum_freeze_max_age=2000000000",
log_opts.filename);
exec_prog(true, "%s", cmd);
/*
* Don't throw an error right away, let connecting throw the error
* because it might supply a reason for the failure.
*/
pg_ctl_return = exec_prog(false, "%s", cmd);
/* Check to see if we can connect to the server; if not, report it. */
if ((conn = get_db_conn(cluster, "template1")) == NULL ||
@ -198,6 +203,11 @@ start_postmaster(ClusterInfo *cluster)
}
PQfinish(conn);
/* If the connection didn't fail, fail now */
if (pg_ctl_return != 0)
pg_log(PG_FATAL, "pg_ctl failed to start the %s server\n",
CLUSTER_NAME(cluster));
os_info.running_cluster = cluster;
}
@ -241,20 +251,15 @@ stop_postmaster(bool fast)
/*
* check_for_libpq_envvars()
* check_pghost_envvar()
*
* tests whether any libpq environment variables are set.
* Since pg_upgrade connects to both the old and the new server,
* it is potentially dangerous to have any of these set.
*
* If any are found, will log them and cancel.
* Tests that PGHOST does not point to a non-local server
*/
void
check_for_libpq_envvars(void)
check_pghost_envvar(void)
{
PQconninfoOption *option;
PQconninfoOption *start;
bool found = false;
/* Get valid libpq env vars from the PQconndefaults function */
@ -262,29 +267,21 @@ check_for_libpq_envvars(void)
for (option = start; option->keyword != NULL; option++)
{
if (option->envvar)
if (option->envvar && (strcmp(option->envvar, "PGHOST") == 0 ||
strcmp(option->envvar, "PGHOSTADDR") == 0))
{
const char *value;
const char *value = getenv(option->envvar);
/* This allows us to see error messages in the local encoding */
if (strcmp(option->envvar, "PGCLIENTENCODING") == 0)
continue;
value = getenv(option->envvar);
if (value && strlen(value) > 0)
{
found = true;
pg_log(PG_WARNING,
"libpq env var %-20s is currently set to: %s\n", option->envvar, value);
}
if (value && strlen(value) > 0 &&
/* check for 'local' host values */
(strcmp(value, "localhost") != 0 && strcmp(value, "127.0.0.1") != 0 &&
strcmp(value, "::1") != 0 && value[0] != '/'))
pg_log(PG_FATAL,
"libpq environment variable %s has a non-local server value: %s\n",
option->envvar, value);
}
}
/* Free the memory that libpq allocated on our behalf */
PQconninfoFree(start);
if (found)
pg_log(PG_FATAL,
"libpq env vars have been found and listed above, please unset them for pg_upgrade\n");
}

38
contrib/pg_upgrade/util.c
View File

@ -244,3 +244,41 @@ str2uint(const char *str)
{
return strtoul(str, NULL, 10);
}
/*
* pg_putenv()
*
* This is like putenv(), but takes two arguments.
* It also does unsetenv() if val is NULL.
*/
void
pg_putenv(const char *var, const char *val)
{
if (val)
{
#ifndef WIN32
char *envstr = (char *) pg_malloc(strlen(var) +
strlen(val) + 2);
sprintf(envstr, "%s=%s", var, val);
putenv(envstr);
/*
* Do not free envstr because it becomes part of the environment on
* some operating systems. See port/unsetenv.c::unsetenv.
*/
#else
SetEnvironmentVariableA(var, val);
#endif
}
else
{
#ifndef WIN32
unsetenv(var);
#else
SetEnvironmentVariableA(var, "");
#endif
}
}

45
doc/src/sgml/pgupgrade.sgml
View File

@ -58,14 +58,16 @@
<varlistentry>
<term><option>-b</option> <replaceable>old_bindir</></term>
<term><option>--old-bindir=</option><replaceable>OLDBINDIR</></term>
<listitem><para>specify the old cluster executable directory</para></listitem>
<term><option>--old-bindir=</option><replaceable>old_bindir</></term>
<listitem><para>the old cluster executable directory;
environment variable <envar>OLDBINDIR</></para></listitem>
</varlistentry>
<varlistentry>
<term><option>-B</option> <replaceable>new_bindir</></term>
<term><option>--new-bindir=</option><replaceable>NEWBINDIR</></term>
<listitem><para>specify the new cluster executable directory</para></listitem>
<term><option>--new-bindir=</option><replaceable>new_bindir</></term>
<listitem><para>the new cluster executable directory;
environment variable <envar>NEWBINDIR</></para></listitem>
</varlistentry>
<varlistentry>
@ -76,14 +78,16 @@
<varlistentry>
<term><option>-d</option> <replaceable>old_datadir</></term>
<term><option>--old-datadir=</option><replaceable>OLDDATADIR</></term>
<listitem><para>specify the old cluster data directory</para></listitem>
<term><option>--old-datadir=</option><replaceable>old_datadir</></term>
<listitem><para>the old cluster data directory; environment
variable <envar>OLDDATADIR</></para></listitem>
</varlistentry>
<varlistentry>
<term><option>-D</option> <replaceable>new_datadir</></term>
<term><option>--new-datadir=</option><replaceable>NEWDATADIR</></term>
<listitem><para>specify the new cluster data directory</para></listitem>
<term><option>--new-datadir=</option><replaceable>new_datadir</></term>
<listitem><para>the new cluster data directory; environment
variable <envar>NEWDATADIR</></para></listitem>
</varlistentry>
<varlistentry>
@ -94,7 +98,7 @@
<varlistentry>
<term><option>-G</option> <replaceable>debug_filename</></term>
<term><option>--debugfile=</option><replaceable>DEBUGFILENAME</></term>
<term><option>--debugfile=</option><replaceable>debug_filename</></term>
<listitem><para>output debugging activity to file</para></listitem>
</varlistentry>
@ -106,26 +110,29 @@
<varlistentry>
<term><option>-l</option> <replaceable>log_filename</></term>
<term><option>--logfile=</option><replaceable>LOGFILENAME</></term>
<term><option>--logfile=</option><replaceable>log_filename</></term>
<listitem><para>log session activity to file</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-p</option> <replaceable>old_portnum</></term>
<term><option>--old-port=</option><replaceable>portnum</></term>
<listitem><para>specify the old cluster port number</para></listitem>
<term><option>-p</option> <replaceable>old_port_number</></term>
<term><option>--old-port=</option><replaceable>old_portnum</></term>
<listitem><para>the old cluster port number; environment
variable <envar>PGPORT</></para></listitem>
</varlistentry>
<varlistentry>
<term><option>-P</option> <replaceable>new_portnum</></term>
<term><option>--new-port=</option><replaceable>portnum</></term>
<listitem><para>specify the new cluster port number</para></listitem>
<term><option>-P</option> <replaceable>new_port_number</></term>
<term><option>--new-port=</option><replaceable>new_portnum</></term>
<listitem><para>the new cluster port number; environment
variable <envar>PGPORT</></para></listitem>
</varlistentry>
<varlistentry>
<term><option>-u</option> <replaceable>username</></term>
<term><option>--user=</option><replaceable>username</></term>
<listitem><para>clusters superuser</para></listitem>
<term><option>-u</option> <replaceable>user_name</></term>
<term><option>--user=</option><replaceable>user_name</></term>
<listitem><para>cluster's super user name; environment
variable <envar>PGUSER</></para></listitem>
</varlistentry>
<varlistentry>