Age Owner TLA Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * dropuser
4 : *
5 : * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
6 : * Portions Copyright (c) 1994, Regents of the University of California
7 : *
8 : * src/bin/scripts/dropuser.c
9 : *
10 : *-------------------------------------------------------------------------
11 : */
12 :
13 : #include "postgres_fe.h"
14 : #include "common.h"
15 : #include "common/logging.h"
16 : #include "common/string.h"
17 : #include "fe_utils/option_utils.h"
18 : #include "fe_utils/string_utils.h"
19 :
20 :
21 : static void help(const char *progname);
22 :
23 :
24 : int
7327 peter_e 25 CBC 5 : main(int argc, char *argv[])
26 : {
27 : static int if_exists = 0;
28 :
29 : static struct option long_options[] = {
30 : {"host", required_argument, NULL, 'h'},
31 : {"port", required_argument, NULL, 'p'},
32 : {"username", required_argument, NULL, 'U'},
33 : {"no-password", no_argument, NULL, 'w'},
34 : {"password", no_argument, NULL, 'W'},
35 : {"echo", no_argument, NULL, 'e'},
36 : {"interactive", no_argument, NULL, 'i'},
37 : {"if-exists", no_argument, &if_exists, 1},
38 : {NULL, 0, NULL, 0}
39 : };
40 :
41 : const char *progname;
42 : int optindex;
43 : int c;
44 :
45 5 : char *dropuser = NULL;
46 5 : char *host = NULL;
47 5 : char *port = NULL;
48 5 : char *username = NULL;
5155 49 5 : enum trivalue prompt_password = TRI_DEFAULT;
50 : ConnParams cparams;
7327 51 5 : bool echo = false;
52 5 : bool interactive = false;
53 :
54 : PQExpBufferData sql;
55 :
56 : PGconn *conn;
57 : PGresult *result;
58 :
1469 peter 59 5 : pg_logging_init(argv[0]);
7327 peter_e 60 5 : progname = get_progname(argv[0]);
5232 61 5 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));
62 :
7327 63 5 : handle_help_version_opts(argc, argv, "dropuser", help);
64 :
118 peter 65 GNC 3 : while ((c = getopt_long(argc, argv, "eh:ip:U:wW", long_options, &optindex)) != -1)
66 : {
7327 peter_e 67 CBC 1 : switch (c)
68 : {
118 peter 69 UNC 0 : case 'e':
70 0 : echo = true;
71 0 : break;
7327 peter_e 72 UBC 0 : case 'h':
3831 bruce 73 0 : host = pg_strdup(optarg);
7327 peter_e 74 0 : break;
118 peter 75 UNC 0 : case 'i':
76 0 : interactive = true;
77 0 : break;
7327 peter_e 78 UBC 0 : case 'p':
3831 bruce 79 0 : port = pg_strdup(optarg);
7327 peter_e 80 0 : break;
81 0 : case 'U':
3831 bruce 82 0 : username = pg_strdup(optarg);
7327 peter_e 83 0 : break;
5155 84 0 : case 'w':
85 0 : prompt_password = TRI_NO;
86 0 : break;
7327 87 0 : case 'W':
5155 88 0 : prompt_password = TRI_YES;
7327 89 0 : break;
4240 rhaas 90 0 : case 0:
91 : /* this covers the long options */
92 0 : break;
7327 peter_e 93 CBC 1 : default:
94 : /* getopt_long already emitted a complaint */
366 tgl 95 1 : pg_log_error_hint("Try \"%s --help\" for more information.", progname);
7327 peter_e 96 1 : exit(1);
97 : }
98 : }
99 :
100 2 : switch (argc - optind)
101 : {
7327 peter_e 102 UBC 0 : case 0:
103 0 : break;
7327 peter_e 104 CBC 2 : case 1:
105 2 : dropuser = argv[optind];
106 2 : break;
7327 peter_e 107 UBC 0 : default:
1469 peter 108 0 : pg_log_error("too many command-line arguments (first is \"%s\")",
109 : argv[optind + 1]);
366 tgl 110 0 : pg_log_error_hint("Try \"%s --help\" for more information.", progname);
7327 peter_e 111 0 : exit(1);
112 : }
113 :
7327 peter_e 114 CBC 2 : if (dropuser == NULL)
115 : {
4079 peter_e 116 UBC 0 : if (interactive)
117 : {
948 tgl 118 0 : dropuser = simple_prompt("Enter name of role to drop: ", true);
119 : }
120 : else
121 : {
1469 peter 122 0 : pg_log_error("missing required argument role name");
366 tgl 123 0 : pg_log_error_hint("Try \"%s --help\" for more information.", progname);
4079 peter_e 124 0 : exit(1);
125 : }
126 : }
127 :
7327 peter_e 128 CBC 2 : if (interactive)
129 : {
6446 tgl 130 UBC 0 : printf(_("Role \"%s\" will be permanently removed.\n"), dropuser);
6043 peter_e 131 0 : if (!yesno_prompt("Are you sure?"))
7327 132 0 : exit(0);
133 : }
134 :
902 tgl 135 CBC 2 : cparams.dbname = NULL; /* this program lacks any dbname option... */
136 2 : cparams.pghost = host;
137 2 : cparams.pgport = port;
138 2 : cparams.pguser = username;
139 2 : cparams.prompt_password = prompt_password;
140 2 : cparams.override_dbname = NULL;
141 :
142 2 : conn = connectMaintenanceDatabase(&cparams, progname, echo);
143 :
7327 peter_e 144 2 : initPQExpBuffer(&sql);
3345 145 4 : appendPQExpBuffer(&sql, "DROP ROLE %s%s;",
4240 rhaas 146 2 : (if_exists ? "IF EXISTS " : ""), fmtId(dropuser));
147 :
7327 peter_e 148 2 : if (echo)
3345 peter_e 149 UBC 0 : printf("%s\n", sql.data);
7327 peter_e 150 CBC 2 : result = PQexec(conn, sql.data);
151 :
152 2 : if (PQresultStatus(result) != PGRES_COMMAND_OK)
153 : {
1469 peter 154 1 : pg_log_error("removal of role \"%s\" failed: %s",
155 : dropuser, PQerrorMessage(conn));
7327 peter_e 156 1 : PQfinish(conn);
157 1 : exit(1);
158 : }
159 :
6159 bruce 160 1 : PQclear(result);
7327 peter_e 161 1 : PQfinish(conn);
162 1 : exit(0);
163 : }
164 :
165 :
166 : static void
167 1 : help(const char *progname)
168 : {
6400 169 1 : printf(_("%s removes a PostgreSQL role.\n\n"), progname);
7327 170 1 : printf(_("Usage:\n"));
6400 171 1 : printf(_(" %s [OPTION]... [ROLENAME]\n"), progname);
7327 172 1 : printf(_("\nOptions:\n"));
7242 bruce 173 1 : printf(_(" -e, --echo show the commands being sent to the server\n"));
4079 peter_e 174 1 : printf(_(" -i, --interactive prompt before deleting anything, and prompt for\n"
175 : " role name if not specified\n"));
3947 176 1 : printf(_(" -V, --version output version information, then exit\n"));
4240 rhaas 177 1 : printf(_(" --if-exists don't report error if user doesn't exist\n"));
3947 peter_e 178 1 : printf(_(" -?, --help show this help, then exit\n"));
5156 179 1 : printf(_("\nConnection options:\n"));
7242 bruce 180 1 : printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
7327 peter_e 181 1 : printf(_(" -p, --port=PORT database server port\n"));
182 1 : printf(_(" -U, --username=USERNAME user name to connect as (not the one to drop)\n"));
5155 183 1 : printf(_(" -w, --no-password never prompt for password\n"));
5598 tgl 184 1 : printf(_(" -W, --password force password prompt\n"));
1136 peter 185 1 : printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
186 1 : printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
7327 peter_e 187 1 : }
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