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createuser.c
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1 /*-------------------------------------------------------------------------
2  *
3  * createuser
4  *
5  * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
6  * Portions Copyright (c) 1994, Regents of the University of California
7  *
8  * src/bin/scripts/createuser.c
9  *
10  *-------------------------------------------------------------------------
11  */
12 
13 #include "postgres_fe.h"
14 #include "common.h"
15 #include "fe_utils/simple_list.h"
16 #include "fe_utils/string_utils.h"
17 
18 
19 static void help(const char *progname);
20 
21 int
22 main(int argc, char *argv[])
23 {
24  static struct option long_options[] = {
25  {"host", required_argument, NULL, 'h'},
26  {"port", required_argument, NULL, 'p'},
27  {"username", required_argument, NULL, 'U'},
28  {"role", required_argument, NULL, 'g'},
29  {"no-password", no_argument, NULL, 'w'},
30  {"password", no_argument, NULL, 'W'},
31  {"echo", no_argument, NULL, 'e'},
32  {"createdb", no_argument, NULL, 'd'},
33  {"no-createdb", no_argument, NULL, 'D'},
34  {"superuser", no_argument, NULL, 's'},
35  {"no-superuser", no_argument, NULL, 'S'},
36  {"createrole", no_argument, NULL, 'r'},
37  {"no-createrole", no_argument, NULL, 'R'},
38  {"inherit", no_argument, NULL, 'i'},
39  {"no-inherit", no_argument, NULL, 'I'},
40  {"login", no_argument, NULL, 'l'},
41  {"no-login", no_argument, NULL, 'L'},
42  {"replication", no_argument, NULL, 1},
43  {"no-replication", no_argument, NULL, 2},
44  {"interactive", no_argument, NULL, 3},
45  /* adduser is obsolete, undocumented spelling of superuser */
46  {"adduser", no_argument, NULL, 'a'},
47  {"no-adduser", no_argument, NULL, 'A'},
48  {"connection-limit", required_argument, NULL, 'c'},
49  {"pwprompt", no_argument, NULL, 'P'},
50  {"encrypted", no_argument, NULL, 'E'},
51  {NULL, 0, NULL, 0}
52  };
53 
54  const char *progname;
55  int optindex;
56  int c;
57  const char *newuser = NULL;
58  char *host = NULL;
59  char *port = NULL;
60  char *username = NULL;
61  SimpleStringList roles = {NULL, NULL};
62  enum trivalue prompt_password = TRI_DEFAULT;
63  bool echo = false;
64  bool interactive = false;
65  char *conn_limit = NULL;
66  bool pwprompt = false;
67  char *newpassword = NULL;
68  char newuser_buf[128];
69  char newpassword_buf[100];
70 
71  /* Tri-valued variables. */
72  enum trivalue createdb = TRI_DEFAULT,
73  superuser = TRI_DEFAULT,
74  createrole = TRI_DEFAULT,
75  inherit = TRI_DEFAULT,
76  login = TRI_DEFAULT,
77  replication = TRI_DEFAULT;
78 
79  PQExpBufferData sql;
80 
81  PGconn *conn;
82  PGresult *result;
83 
84  progname = get_progname(argv[0]);
85  set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));
86 
87  handle_help_version_opts(argc, argv, "createuser", help);
88 
89  while ((c = getopt_long(argc, argv, "h:p:U:g:wWedDsSaArRiIlLc:PE",
90  long_options, &optindex)) != -1)
91  {
92  switch (c)
93  {
94  case 'h':
95  host = pg_strdup(optarg);
96  break;
97  case 'p':
98  port = pg_strdup(optarg);
99  break;
100  case 'U':
101  username = pg_strdup(optarg);
102  break;
103  case 'g':
104  simple_string_list_append(&roles, optarg);
105  break;
106  case 'w':
107  prompt_password = TRI_NO;
108  break;
109  case 'W':
110  prompt_password = TRI_YES;
111  break;
112  case 'e':
113  echo = true;
114  break;
115  case 'd':
116  createdb = TRI_YES;
117  break;
118  case 'D':
119  createdb = TRI_NO;
120  break;
121  case 's':
122  case 'a':
123  superuser = TRI_YES;
124  break;
125  case 'S':
126  case 'A':
127  superuser = TRI_NO;
128  break;
129  case 'r':
130  createrole = TRI_YES;
131  break;
132  case 'R':
133  createrole = TRI_NO;
134  break;
135  case 'i':
136  inherit = TRI_YES;
137  break;
138  case 'I':
139  inherit = TRI_NO;
140  break;
141  case 'l':
142  login = TRI_YES;
143  break;
144  case 'L':
145  login = TRI_NO;
146  break;
147  case 'c':
148  conn_limit = pg_strdup(optarg);
149  break;
150  case 'P':
151  pwprompt = true;
152  break;
153  case 'E':
154  /* no-op, accepted for backward compatibility */
155  break;
156  case 1:
157  replication = TRI_YES;
158  break;
159  case 2:
160  replication = TRI_NO;
161  break;
162  case 3:
163  interactive = true;
164  break;
165  default:
166  fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
167  exit(1);
168  }
169  }
170 
171  switch (argc - optind)
172  {
173  case 0:
174  break;
175  case 1:
176  newuser = argv[optind];
177  break;
178  default:
179  fprintf(stderr, _("%s: too many command-line arguments (first is \"%s\")\n"),
180  progname, argv[optind + 1]);
181  fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
182  exit(1);
183  }
184 
185  if (newuser == NULL)
186  {
187  if (interactive)
188  {
189  simple_prompt("Enter name of role to add: ",
190  newuser_buf, sizeof(newuser_buf), true);
191  newuser = newuser_buf;
192  }
193  else
194  {
195  if (getenv("PGUSER"))
196  newuser = getenv("PGUSER");
197  else
198  newuser = get_user_name_or_exit(progname);
199  }
200  }
201 
202  if (pwprompt)
203  {
204  char pw2[100];
205 
206  simple_prompt("Enter password for new role: ",
207  newpassword_buf, sizeof(newpassword_buf), false);
208  simple_prompt("Enter it again: ", pw2, sizeof(pw2), false);
209  if (strcmp(newpassword_buf, pw2) != 0)
210  {
211  fprintf(stderr, _("Passwords didn't match.\n"));
212  exit(1);
213  }
214  newpassword = newpassword_buf;
215  }
216 
217  if (superuser == 0)
218  {
219  if (interactive && yesno_prompt("Shall the new role be a superuser?"))
220  superuser = TRI_YES;
221  else
222  superuser = TRI_NO;
223  }
224 
225  if (superuser == TRI_YES)
226  {
227  /* Not much point in trying to restrict a superuser */
228  createdb = TRI_YES;
229  createrole = TRI_YES;
230  }
231 
232  if (createdb == 0)
233  {
234  if (interactive && yesno_prompt("Shall the new role be allowed to create databases?"))
235  createdb = TRI_YES;
236  else
237  createdb = TRI_NO;
238  }
239 
240  if (createrole == 0)
241  {
242  if (interactive && yesno_prompt("Shall the new role be allowed to create more new roles?"))
243  createrole = TRI_YES;
244  else
245  createrole = TRI_NO;
246  }
247 
248  if (inherit == 0)
249  inherit = TRI_YES;
250 
251  if (login == 0)
252  login = TRI_YES;
253 
254  conn = connectDatabase("postgres", host, port, username, prompt_password,
255  progname, false, false);
256 
257  initPQExpBuffer(&sql);
258 
259  printfPQExpBuffer(&sql, "CREATE ROLE %s", fmtId(newuser));
260  if (newpassword)
261  {
262  char *encrypted_password;
263 
264  appendPQExpBufferStr(&sql, " PASSWORD ");
265 
266  encrypted_password = PQencryptPasswordConn(conn,
267  newpassword,
268  newuser,
269  NULL);
270  if (!encrypted_password)
271  {
272  fprintf(stderr, _("%s: password encryption failed: %s"),
273  progname, PQerrorMessage(conn));
274  exit(1);
275  }
276  appendStringLiteralConn(&sql, encrypted_password, conn);
277  PQfreemem(encrypted_password);
278  }
279  if (superuser == TRI_YES)
280  appendPQExpBufferStr(&sql, " SUPERUSER");
281  if (superuser == TRI_NO)
282  appendPQExpBufferStr(&sql, " NOSUPERUSER");
283  if (createdb == TRI_YES)
284  appendPQExpBufferStr(&sql, " CREATEDB");
285  if (createdb == TRI_NO)
286  appendPQExpBufferStr(&sql, " NOCREATEDB");
287  if (createrole == TRI_YES)
288  appendPQExpBufferStr(&sql, " CREATEROLE");
289  if (createrole == TRI_NO)
290  appendPQExpBufferStr(&sql, " NOCREATEROLE");
291  if (inherit == TRI_YES)
292  appendPQExpBufferStr(&sql, " INHERIT");
293  if (inherit == TRI_NO)
294  appendPQExpBufferStr(&sql, " NOINHERIT");
295  if (login == TRI_YES)
296  appendPQExpBufferStr(&sql, " LOGIN");
297  if (login == TRI_NO)
298  appendPQExpBufferStr(&sql, " NOLOGIN");
299  if (replication == TRI_YES)
300  appendPQExpBufferStr(&sql, " REPLICATION");
301  if (replication == TRI_NO)
302  appendPQExpBufferStr(&sql, " NOREPLICATION");
303  if (conn_limit != NULL)
304  appendPQExpBuffer(&sql, " CONNECTION LIMIT %s", conn_limit);
305  if (roles.head != NULL)
306  {
307  SimpleStringListCell *cell;
308 
309  appendPQExpBufferStr(&sql, " IN ROLE ");
310 
311  for (cell = roles.head; cell; cell = cell->next)
312  {
313  if (cell->next)
314  appendPQExpBuffer(&sql, "%s,", fmtId(cell->val));
315  else
316  appendPQExpBuffer(&sql, "%s", fmtId(cell->val));
317  }
318  }
319  appendPQExpBufferChar(&sql, ';');
320 
321  if (echo)
322  printf("%s\n", sql.data);
323  result = PQexec(conn, sql.data);
324 
325  if (PQresultStatus(result) != PGRES_COMMAND_OK)
326  {
327  fprintf(stderr, _("%s: creation of new role failed: %s"),
328  progname, PQerrorMessage(conn));
329  PQfinish(conn);
330  exit(1);
331  }
332 
333  PQclear(result);
334  PQfinish(conn);
335  exit(0);
336 }
337 
338 
339 static void
340 help(const char *progname)
341 {
342  printf(_("%s creates a new PostgreSQL role.\n\n"), progname);
343  printf(_("Usage:\n"));
344  printf(_(" %s [OPTION]... [ROLENAME]\n"), progname);
345  printf(_("\nOptions:\n"));
346  printf(_(" -c, --connection-limit=N connection limit for role (default: no limit)\n"));
347  printf(_(" -d, --createdb role can create new databases\n"));
348  printf(_(" -D, --no-createdb role cannot create databases (default)\n"));
349  printf(_(" -e, --echo show the commands being sent to the server\n"));
350  printf(_(" -g, --role=ROLE new role will be a member of this role\n"));
351  printf(_(" -i, --inherit role inherits privileges of roles it is a\n"
352  " member of (default)\n"));
353  printf(_(" -I, --no-inherit role does not inherit privileges\n"));
354  printf(_(" -l, --login role can login (default)\n"));
355  printf(_(" -L, --no-login role cannot login\n"));
356  printf(_(" -P, --pwprompt assign a password to new role\n"));
357  printf(_(" -r, --createrole role can create new roles\n"));
358  printf(_(" -R, --no-createrole role cannot create roles (default)\n"));
359  printf(_(" -s, --superuser role will be superuser\n"));
360  printf(_(" -S, --no-superuser role will not be superuser (default)\n"));
361  printf(_(" -V, --version output version information, then exit\n"));
362  printf(_(" --interactive prompt for missing role name and attributes rather\n"
363  " than using defaults\n"));
364  printf(_(" --replication role can initiate replication\n"));
365  printf(_(" --no-replication role cannot initiate replication\n"));
366  printf(_(" -?, --help show this help, then exit\n"));
367  printf(_("\nConnection options:\n"));
368  printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
369  printf(_(" -p, --port=PORT database server port\n"));
370  printf(_(" -U, --username=USERNAME user name to connect as (not the one to create)\n"));
371  printf(_(" -w, --no-password never prompt for password\n"));
372  printf(_(" -W, --password force password prompt\n"));
373  printf(_("\nReport bugs to <pgsql-bugs@postgresql.org>.\n"));
374 }
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