2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * login.c: Log into an empire server
29 * Known contributors to this file:
32 * Markus Armbruster, 2004-2020
45 login(int s, char *uname, char *cname, char *cpass,
46 int kill_proc, int utf8)
54 if (!expect(s, C_INIT, buf))
56 sendcmd(s, "user", uname);
57 if (!expect(s, C_CMDOK, buf)) {
58 fprintf(stderr, "Server rejects your user name\n");
62 sendcmd(s, "options", "utf-8");
64 code = recvline(s, buf);
68 fprintf(stderr, "Server doesn't support UTF-8\n");
74 (void)printf("Country name? ");
76 cname = fgets(tmp, sizeof(tmp), stdin);
77 if (cname == NULL || *cname == 0)
81 if (cname[len-1] == '\n')
83 sendcmd(s, "coun", cname);
84 if (!expect(s, C_CMDOK, buf)) {
85 (void)fprintf(stderr, "No such country\n");
89 cpass = get_password("Your name? ");
90 if (cpass == NULL || *cpass == 0)
94 sendcmd(s, "pass", cpass);
95 memset(cpass, 0, strlen(cpass)); /* for core dumps */
96 if (!expect(s, C_CMDOK, buf)) {
97 (void)fprintf(stderr, "Bad password\n");
101 sendcmd(s, "kill", NULL);
102 (void)printf("\n\t-=O=-\n");
103 (void)expect(s, C_EXIT, buf);
104 fprintf(stderr, "%s\n", buf);
107 sendcmd(s, "play", NULL);
108 (void)printf("\n\t-=O=-\n");
109 if (!expect(s, C_INIT, buf)) {
110 fprintf(stderr, "%s\n", buf);
113 for (ptr = buf; !isspace(*ptr); ptr++) ;
115 p = strchr(ptr, '\n');
118 if (atoi(ptr) != CLIENTPROTO) {
119 printf("Empire client out of date; get new version!\n");
120 printf(" this version: %d, current version: %d\n",
121 CLIENTPROTO, atoi(ptr));