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Postgres FD Implementation
Commit 8ae0d476 authored by Tom Lane's avatar Tom Lane
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Update the createuser utility for the ROLEs world. Alvaro Herrera

parent e36de181
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doc/src/sgml/ref/createuser.sgml
View file @ 8ae0d476
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/createuser.sgml,v 1.41 2005/05/29 03:32:18 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/createuser.sgml,v 1.42 2005/08/14 20:16:02 tgl Exp $
PostgreSQL documentation
-->
......@@ -32,24 +32,24 @@ PostgreSQL documentation
<title>Description</title>
<para>
<application>createuser</application> creates a
new <productname>PostgreSQL</productname> user.
Only superusers (users with <literal>usesuper</literal> set in
the <literal>pg_shadow</literal> table) can create
new <productname>PostgreSQL</productname> users,
so <application>createuser</application> must be
invoked by someone who can connect as a <productname>PostgreSQL</productname>
superuser.
new <productname>PostgreSQL</productname> user (or more precisely, a role).
Only superusers and users with <literal>CREATEROLE</> privilege can create
new users, so <application>createuser</application> must be
invoked by someone who can connect as a superuser or a user with
<literal>CREATEROLE</> privilege.
</para>
<para>
Being a superuser also implies the ability to bypass access permission
If you wish to create a new superuser, you must connect as a
superuser, not merely with <literal>CREATEROLE</> privilege.
Being a superuser implies the ability to bypass all access permission
checks within the database, so superuserdom should not be granted lightly.
</para>
<para>
<application>createuser</application> is a wrapper around the
<acronym>SQL</acronym> command <xref linkend="SQL-CREATEUSER"
endterm="SQL-CREATEUSER-title">.
<acronym>SQL</acronym> command <xref linkend="SQL-CREATEROLE"
endterm="SQL-CREATEROLE-title">.
There is no effective difference between creating users via
this utility and via other methods for accessing the server.
</para>
......@@ -70,32 +70,28 @@ PostgreSQL documentation
<para>
Specifies the name of the <productname>PostgreSQL</productname> user
to be created.
This name must be unique among all users of this
This name must be different from all existing roles in this
<productname>PostgreSQL</productname> installation.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-a</></term>
<term><option>--adduser</></term>
<term><option>-s</></term>
<term><option>--superuser</></term>
<listitem>
<para>
The new user is allowed to create other users.
(Note: Actually, this makes the new user a <emphasis>superuser</>.
The option is poorly named.)
The new user will be a superuser.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-A</></term>
<term><option>--no-adduser</></term>
<term><option>-S</></term>
<term><option>--no-superuser</></term>
<listitem>
<para>
The new user is not allowed to create other users (i.e.,
the new user is a regular user, not a superuser).
This is the default.
The new user will not be a superuser.
</para>
</listitem>
</varlistentry>
......@@ -105,7 +101,7 @@ PostgreSQL documentation
<term><option>--createdb</></term>
<listitem>
<para>
The new user is allowed to create databases.
The new user will be allowed to create databases.
</para>
</listitem>
</varlistentry>
......@@ -115,52 +111,86 @@ PostgreSQL documentation
<term><option>--no-createdb</></term>
<listitem>
<para>
The new user is not allowed to create databases.
The new user will not be allowed to create databases.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-r</></term>
<term><option>--createrole</></term>
<listitem>
<para>
The new user will be allowed to create new roles (that is,
this user will have <literal>CREATEROLE</> privilege).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-R</></term>
<term><option>--no-createrole</></term>
<listitem>
<para>
The new user will not be allowed to create new roles.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-l</></term>
<term><option>--login</></term>
<listitem>
<para>
The new user will be allowed to log in (that is, the user name
can be used as the initial session user identifier).
This is the default.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-e</></term>
<term><option>--echo</></term>
<term><option>-L</></term>
<term><option>--no-login</></term>
<listitem>
<para>
Echo the commands that <application>createuser</application> generates
and sends to the server.
The new user will not be allowed to log in.
(A role without login privilege is still useful as a means of
managing database permissions.)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-E</></term>
<term><option>--encrypted</></term>
<term><option>-i</></term>
<term><option>--inherit</></term>
<listitem>
<para>
Encrypts the user's password stored in the database. If not
specified, the default password behavior is used.
The new role will automatically inherit privileges of roles
it is a member of.
This is the default.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-i <replaceable class="parameter">number</replaceable></></term>
<term><option>--sysid <replaceable class="parameter">number</replaceable></></term>
<term><option>-I</></term>
<term><option>--no-inherit</></term>
<listitem>
<para>
Allows you to pick a non-default user ID for the new user. This is not
necessary, but some people like it.
The new role will not automatically inherit privileges of roles
it is a member of.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-N</></term>
<term><option>--unencrypted</></term>
<term><option>-c <replaceable class="parameter">number</replaceable></></term>
<term><option>--conn-limit <replaceable class="parameter">number</replaceable></></term>
<listitem>
<para>
Does not encrypt the user's password stored in the database. If
not specified, the default password behavior is used.
Set a maximum number of connections for the new user.
The default is to set no limit.
</para>
</listitem>
</varlistentry>
......@@ -177,6 +207,39 @@ PostgreSQL documentation
</listitem>
</varlistentry>
<varlistentry>
<term><option>-E</></term>
<term><option>--encrypted</></term>
<listitem>
<para>
Encrypts the user's password stored in the database. If not
specified, the default password behavior is used.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-N</></term>
<term><option>--unencrypted</></term>
<listitem>
<para>
Does not encrypt the user's password stored in the database. If
not specified, the default password behavior is used.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-e</></term>
<term><option>--echo</></term>
<listitem>
<para>
Echo the commands that <application>createuser</application> generates
and sends to the server.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-q</></term>
<term><option>--quiet</></term>
......@@ -272,8 +335,8 @@ PostgreSQL documentation
<title>Diagnostics</title>
<para>
In case of difficulty, see <xref linkend="SQL-CREATEUSER"
endterm="sql-createuser-title"> and <xref linkend="APP-PSQL"> for
In case of difficulty, see <xref linkend="SQL-CREATEROLE"
endterm="sql-createrole-title"> and <xref linkend="APP-PSQL"> for
discussions of potential problems and error messages.
The database server must be running at the
targeted host. Also, any default connection settings and environment
......@@ -292,8 +355,9 @@ PostgreSQL documentation
server:
<screen>
<prompt>$ </prompt><userinput>createuser joe</userinput>
<computeroutput>Shall the new user be allowed to create databases? (y/n) </computeroutput><userinput>n</userinput>
<computeroutput>Shall the new user be allowed to create more new users? (y/n) </computeroutput><userinput>n</userinput>
<computeroutput>Shall the new role be a superuser? (y/n) </computeroutput><userinput>n</userinput>
<computeroutput>Shall the new role be allowed to create databases? (y/n) </computeroutput><userinput>n</userinput>
<computeroutput>Shall the new role be allowed to create more new roles? (y/n) </computeroutput><userinput>n</userinput>
<computeroutput>CREATE USER</computeroutput>
</screen>
</para>
......@@ -303,9 +367,9 @@ PostgreSQL documentation
server on host <literal>eden</>, port 5000, avoiding the prompts and
taking a look at the underlying command:
<screen>
<prompt>$ </prompt><userinput>createuser -h eden -p 5000 -D -A -e joe</userinput>
<computeroutput>CREATE USER joe NOCREATEDB NOCREATEUSER;</computeroutput>
<computeroutput>CREATE USER</computeroutput>
<prompt>$ </prompt><userinput>createuser -h eden -p 5000 -S -D -R -e joe</userinput>
<computeroutput>CREATE ROLE joe NOSUPERUSER NOCREATEDB NOCREATEROLE INHERIT LOGIN;</computeroutput>
<computeroutput>CREATE ROLE</computeroutput>
</screen>
</para>
......@@ -313,11 +377,11 @@ PostgreSQL documentation
To create the user <literal>joe</literal> as a superuser,
and assign a password immediately:
<screen>
<prompt>$ </prompt><userinput>createuser -P -d -a -e joe</userinput>
<computeroutput>Enter password for new user: </computeroutput><userinput>xyzzy</userinput>
<prompt>$ </prompt><userinput>createuser -P -s -e joe</userinput>
<computeroutput>Enter password for new role: </computeroutput><userinput>xyzzy</userinput>
<computeroutput>Enter it again: </computeroutput><userinput>xyzzy</userinput>
<computeroutput>CREATE USER joe PASSWORD 'xyzzy' CREATEDB CREATEUSER;</computeroutput>
<computeroutput>CREATE USER</computeroutput>
<computeroutput>CREATE ROLE joe PASSWORD 'xyzzy' SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;</computeroutput>
<computeroutput>CREATE ROLE</computeroutput>
</screen>
In the above example, the new password isn't actually echoed when typed,
but we show what was typed for clarity. However the password
......@@ -333,7 +397,7 @@ PostgreSQL documentation
<simplelist type="inline">
<member><xref linkend="app-dropuser"></member>
<member><xref linkend="sql-createuser" endterm="sql-createuser-title"></member>
<member><xref linkend="sql-createrole" endterm="sql-createrole-title"></member>
<member>Environment Variables (<xref linkend="libpq-envars">)</member>
</simplelist>
</refsect1>
......
src/bin/scripts/createuser.c
View file @ 8ae0d476
......@@ -5,7 +5,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/bin/scripts/createuser.c,v 1.17 2005/06/21 04:02:33 tgl Exp $
* $PostgreSQL: pgsql/src/bin/scripts/createuser.c,v 1.18 2005/08/14 20:16:03 tgl Exp $
*
*-------------------------------------------------------------------------
*/
......@@ -30,9 +30,18 @@ main(int argc, char *argv[])
{"quiet", no_argument, NULL, 'q'},
{"createdb", no_argument, NULL, 'd'},
{"no-createdb", no_argument, NULL, 'D'},
{"superuser", no_argument, NULL, 's'},
{"no-superuser", no_argument, NULL, 'S'},
{"createrole", no_argument, NULL, 'r'},
{"no-createrole", no_argument, NULL, 'R'},
{"inherit", no_argument, NULL, 'i'},
{"no-inherit", no_argument, NULL, 'I'},
{"login", no_argument, NULL, 'l'},
{"no-login", no_argument, NULL, 'L'},
/* adduser is obsolete, undocumented spelling of superuser */
{"adduser", no_argument, NULL, 'a'},
{"no-adduser", no_argument, NULL, 'A'},
{"sysid", required_argument, NULL, 'i'},
{"conn-limit", required_argument, NULL, 'c'},
{"pwprompt", no_argument, NULL, 'P'},
{"encrypted", no_argument, NULL, 'E'},
{"unencrypted", no_argument, NULL, 'N'},
......@@ -51,8 +60,11 @@ main(int argc, char *argv[])
bool echo = false;
bool quiet = false;
int createdb = 0;
int adduser = 0;
char *sysid = NULL;
int superuser = 0;
int createrole = 0;
int inherit = 0;
int login = 0;
char *conn_limit = NULL;
bool pwprompt = false;
int encrypted = 0; /* 0 uses server default */
char *newpassword = NULL;
......@@ -67,7 +79,8 @@ main(int argc, char *argv[])
handle_help_version_opts(argc, argv, "createuser", help);
while ((c = getopt_long(argc, argv, "h:p:U:WeqaAdDi:PEN", long_options, &optindex)) != -1)
while ((c = getopt_long(argc, argv, "h:p:U:WeqdDsSaArRiIlLc:PEN",
long_options, &optindex)) != -1)
{
switch (c)
{
......@@ -89,20 +102,40 @@ main(int argc, char *argv[])
case 'q':
quiet = true;
break;
case 'a':
adduser = +1;
break;
case 'A':
adduser = -1;
break;
case 'd':
createdb = +1;
break;
case 'D':
createdb = -1;
break;
case 's':
case 'a':
superuser = +1;
break;
case 'S':
case 'A':
superuser = -1;
break;
case 'r':
createrole = +1;
break;
case 'R':
createrole = -1;
break;
case 'i':
sysid = optarg;
inherit = +1;
break;
case 'I':
inherit = -1;
break;
case 'l':
login = +1;
break;
case 'L':
login = -1;
break;
case 'c':
conn_limit = optarg;
break;
case 'P':
pwprompt = true;
......@@ -133,26 +166,15 @@ main(int argc, char *argv[])
exit(1);
}
if (sysid)
{
char *endptr;
if (strtol(sysid, &endptr, 10) <= 0 || *endptr != '\0')
{
fprintf(stderr, _("%s: user ID must be a positive number\n"), progname);
exit(1);
}
}
if (newuser == NULL)
newuser = simple_prompt("Enter name of user to add: ", 128, true);
newuser = simple_prompt("Enter name of role to add: ", 128, true);
if (pwprompt)
{
char *pw1,
*pw2;
pw1 = simple_prompt("Enter password for new user: ", 100, false);
pw1 = simple_prompt("Enter password for new role: ", 100, false);
pw2 = simple_prompt("Enter it again: ", 100, false);
if (strcmp(pw1, pw2) != 0)
{
......@@ -163,33 +185,61 @@ main(int argc, char *argv[])
free(pw2);
}
if (superuser == 0)
{
char *reply;
reply = simple_prompt("Shall the new role be a superuser? (y/n) ", 1, true);
if (check_yesno_response(reply) == 1)
superuser = +1;
else
superuser = -1;
}
if (superuser == +1)
{
/* Not much point in trying to restrict a superuser */
createdb = +1;
createrole = +1;
}
if (createdb == 0)
{
char *reply;
reply = simple_prompt("Shall the new user be allowed to create databases? (y/n) ", 1, true);
reply = simple_prompt("Shall the new role be allowed to create databases? (y/n) ", 1, true);
if (check_yesno_response(reply) == 1)
createdb = +1;
else
createdb = -1;
}
if (adduser == 0)
if (createrole == 0)
{
char *reply;
reply = simple_prompt("Shall the new user be allowed to create more new users? (y/n) ", 1, true);
reply = simple_prompt("Shall the new role be allowed to create more new roles? (y/n) ", 1, true);
if (check_yesno_response(reply) == 1)
adduser = +1;
createrole = +1;
else
adduser = -1;
createrole = -1;
}
if (inherit == 0)
{
/* silently default to YES */
inherit = +1;
}
if (login == 0)
{
/* silently default to YES */
login = +1;
}
initPQExpBuffer(&sql);
printfPQExpBuffer(&sql, "CREATE USER %s", fmtId(newuser));
if (sysid)
appendPQExpBuffer(&sql, " SYSID %s", sysid);
printfPQExpBuffer(&sql, "CREATE ROLE %s", fmtId(newuser));
if (newpassword)
{
if (encrypted == +1)
......@@ -199,14 +249,28 @@ main(int argc, char *argv[])
appendPQExpBuffer(&sql, " PASSWORD ");
appendStringLiteral(&sql, newpassword, false);
}
if (superuser == +1)
appendPQExpBuffer(&sql, " SUPERUSER");
if (superuser == -1)
appendPQExpBuffer(&sql, " NOSUPERUSER");
if (createdb == +1)
appendPQExpBuffer(&sql, " CREATEDB");
if (createdb == -1)
appendPQExpBuffer(&sql, " NOCREATEDB");
if (adduser == +1)
appendPQExpBuffer(&sql, " CREATEUSER");
if (adduser == -1)
appendPQExpBuffer(&sql, " NOCREATEUSER");
if (createrole == +1)
appendPQExpBuffer(&sql, " CREATEROLE");
if (createrole == -1)
appendPQExpBuffer(&sql, " NOCREATEROLE");
if (inherit == +1)
appendPQExpBuffer(&sql, " INHERIT");
if (inherit == -1)
appendPQExpBuffer(&sql, " NOINHERIT");
if (login == +1)
appendPQExpBuffer(&sql, " LOGIN");
if (login == -1)
appendPQExpBuffer(&sql, " NOLOGIN");
if (conn_limit != NULL)
appendPQExpBuffer(&sql, " CONNECTION LIMIT %s", conn_limit);
appendPQExpBuffer(&sql, ";\n");
conn = connectDatabase("postgres", host, port, username, password, progname);
......@@ -217,7 +281,7 @@ main(int argc, char *argv[])
if (PQresultStatus(result) != PGRES_COMMAND_OK)
{
fprintf(stderr, _("%s: creation of new user failed: %s"),
fprintf(stderr, _("%s: creation of new role failed: %s"),
progname, PQerrorMessage(conn));
PQfinish(conn);
exit(1);
......@@ -226,7 +290,7 @@ main(int argc, char *argv[])
PQfinish(conn);
if (!quiet)
{
puts("CREATE USER");
puts("CREATE ROLE");
fflush(stdout);
}
exit(0);
......@@ -236,18 +300,25 @@ main(int argc, char *argv[])
static void
help(const char *progname)
{
printf(_("%s creates a new PostgreSQL user.\n\n"), progname);
printf(_("%s creates a new PostgreSQL role.\n\n"), progname);
printf(_("Usage:\n"));
printf(_(" %s [OPTION]... [USERNAME]\n"), progname);
printf(_("\nOptions:\n"));
printf(_(" -a, --adduser user can add new users\n"));
printf(_(" -A, --no-adduser user cannot add new users\n"));
printf(_(" -d, --createdb user can create new databases\n"));
printf(_(" -D, --no-createdb user cannot create databases\n"));
printf(_(" -P, --pwprompt assign a password to new user\n"));
printf(_(" -s, --superuser role will be superuser\n"));
printf(_(" -S, --no-superuser role will not be superuser\n"));
printf(_(" -d, --createdb role can create new databases\n"));
printf(_(" -D, --no-createdb role cannot create databases\n"));
printf(_(" -r, --createrole role can create new roles\n"));
printf(_(" -R, --no-createrole role cannot create roles\n"));
printf(_(" -l, --login role can login (default)\n"));
printf(_(" -L, --no-login role cannot login\n"));
printf(_(" -i, --inherit role inherits permissions of roles\n"));
printf(_(" it is a member of (default)\n"));
printf(_(" -I, --no-inherit role does not inherit permissions\n"));
printf(_(" -c, --conn-limit=N max connections for role (default: no limit)\n"));
printf(_(" -P, --pwprompt assign a password to new role\n"));
printf(_(" -E, --encrypted encrypt stored password\n"));
printf(_(" -N, --unencrypted do not encrypt stored password\n"));
printf(_(" -i, --sysid=SYSID select sysid for new user\n"));
printf(_(" -e, --echo show the commands being sent to the server\n"));
printf(_(" -q, --quiet don't write any messages\n"));
printf(_(" --help show this help, then exit\n"));
......@@ -257,7 +328,7 @@ help(const char *progname)
printf(_(" -p, --port=PORT database server port\n"));
printf(_(" -U, --username=USERNAME user name to connect as (not the one to create)\n"));
printf(_(" -W, --password prompt for password to connect\n"));
printf(_("\nIf one of -a, -A, -d, -D, and USERNAME is not specified, you will\n"
"be prompted interactively.\n"));
printf(_("\nIf one of -s, -S, -d, -D, -r, -R and USERNAME is not specified,\n"
"you will be prompted interactively.\n"));
printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
}
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