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-rw-r--r--src/bin/scripts/dropuser.c187
1 files changed, 187 insertions, 0 deletions
diff --git a/src/bin/scripts/dropuser.c b/src/bin/scripts/dropuser.c
new file mode 100644
index 0000000..82c1f35
--- /dev/null
+++ b/src/bin/scripts/dropuser.c
@@ -0,0 +1,187 @@
+/*-------------------------------------------------------------------------
+ *
+ * dropuser
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/bin/scripts/dropuser.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres_fe.h"
+#include "common.h"
+#include "common/logging.h"
+#include "common/string.h"
+#include "fe_utils/option_utils.h"
+#include "fe_utils/string_utils.h"
+
+
+static void help(const char *progname);
+
+
+int
+main(int argc, char *argv[])
+{
+ static int if_exists = 0;
+
+ static struct option long_options[] = {
+ {"host", required_argument, NULL, 'h'},
+ {"port", required_argument, NULL, 'p'},
+ {"username", required_argument, NULL, 'U'},
+ {"no-password", no_argument, NULL, 'w'},
+ {"password", no_argument, NULL, 'W'},
+ {"echo", no_argument, NULL, 'e'},
+ {"interactive", no_argument, NULL, 'i'},
+ {"if-exists", no_argument, &if_exists, 1},
+ {NULL, 0, NULL, 0}
+ };
+
+ const char *progname;
+ int optindex;
+ int c;
+
+ char *dropuser = NULL;
+ char *host = NULL;
+ char *port = NULL;
+ char *username = NULL;
+ enum trivalue prompt_password = TRI_DEFAULT;
+ ConnParams cparams;
+ bool echo = false;
+ bool interactive = false;
+
+ PQExpBufferData sql;
+
+ PGconn *conn;
+ PGresult *result;
+
+ pg_logging_init(argv[0]);
+ progname = get_progname(argv[0]);
+ set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pgscripts"));
+
+ handle_help_version_opts(argc, argv, "dropuser", help);
+
+ while ((c = getopt_long(argc, argv, "h:p:U:wWei", long_options, &optindex)) != -1)
+ {
+ switch (c)
+ {
+ case 'h':
+ host = pg_strdup(optarg);
+ break;
+ case 'p':
+ port = pg_strdup(optarg);
+ break;
+ case 'U':
+ username = pg_strdup(optarg);
+ break;
+ case 'w':
+ prompt_password = TRI_NO;
+ break;
+ case 'W':
+ prompt_password = TRI_YES;
+ break;
+ case 'e':
+ echo = true;
+ break;
+ case 'i':
+ interactive = true;
+ break;
+ case 0:
+ /* this covers the long options */
+ break;
+ default:
+ /* getopt_long already emitted a complaint */
+ pg_log_error_hint("Try \"%s --help\" for more information.", progname);
+ exit(1);
+ }
+ }
+
+ switch (argc - optind)
+ {
+ case 0:
+ break;
+ case 1:
+ dropuser = argv[optind];
+ break;
+ default:
+ pg_log_error("too many command-line arguments (first is \"%s\")",
+ argv[optind + 1]);
+ pg_log_error_hint("Try \"%s --help\" for more information.", progname);
+ exit(1);
+ }
+
+ if (dropuser == NULL)
+ {
+ if (interactive)
+ {
+ dropuser = simple_prompt("Enter name of role to drop: ", true);
+ }
+ else
+ {
+ pg_log_error("missing required argument role name");
+ pg_log_error_hint("Try \"%s --help\" for more information.", progname);
+ exit(1);
+ }
+ }
+
+ if (interactive)
+ {
+ printf(_("Role \"%s\" will be permanently removed.\n"), dropuser);
+ if (!yesno_prompt("Are you sure?"))
+ exit(0);
+ }
+
+ cparams.dbname = NULL; /* this program lacks any dbname option... */
+ cparams.pghost = host;
+ cparams.pgport = port;
+ cparams.pguser = username;
+ cparams.prompt_password = prompt_password;
+ cparams.override_dbname = NULL;
+
+ conn = connectMaintenanceDatabase(&cparams, progname, echo);
+
+ initPQExpBuffer(&sql);
+ appendPQExpBuffer(&sql, "DROP ROLE %s%s;",
+ (if_exists ? "IF EXISTS " : ""), fmtId(dropuser));
+
+ if (echo)
+ printf("%s\n", sql.data);
+ result = PQexec(conn, sql.data);
+
+ if (PQresultStatus(result) != PGRES_COMMAND_OK)
+ {
+ pg_log_error("removal of role \"%s\" failed: %s",
+ dropuser, PQerrorMessage(conn));
+ PQfinish(conn);
+ exit(1);
+ }
+
+ PQclear(result);
+ PQfinish(conn);
+ exit(0);
+}
+
+
+static void
+help(const char *progname)
+{
+ printf(_("%s removes a PostgreSQL role.\n\n"), progname);
+ printf(_("Usage:\n"));
+ printf(_(" %s [OPTION]... [ROLENAME]\n"), progname);
+ printf(_("\nOptions:\n"));
+ printf(_(" -e, --echo show the commands being sent to the server\n"));
+ printf(_(" -i, --interactive prompt before deleting anything, and prompt for\n"
+ " role name if not specified\n"));
+ printf(_(" -V, --version output version information, then exit\n"));
+ printf(_(" --if-exists don't report error if user doesn't exist\n"));
+ printf(_(" -?, --help show this help, then exit\n"));
+ printf(_("\nConnection options:\n"));
+ printf(_(" -h, --host=HOSTNAME database server host or socket directory\n"));
+ printf(_(" -p, --port=PORT database server port\n"));
+ printf(_(" -U, --username=USERNAME user name to connect as (not the one to drop)\n"));
+ printf(_(" -w, --no-password never prompt for password\n"));
+ printf(_(" -W, --password force password prompt\n"));
+ printf(_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
+ printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
+}