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Commit | Line | Data |
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de56407f | 1 | /* |
2 | * $Source$ | |
3 | * $Header$ | |
4 | */ | |
546bc43b | 5 | /* (c) Copyright 1988 by the Massachusetts Institute of Technology. */ |
6 | /* For copying and distribution information, please see the file */ | |
7 | /* <mit-copyright.h>. */ | |
de56407f | 8 | |
9 | #ifndef lint | |
10 | static char *rcsid_dispatch_c = "$Header$"; | |
11 | #endif lint | |
12 | ||
546bc43b | 13 | #include <mit-copyright.h> |
de56407f | 14 | #include <stdio.h> |
45c91bf7 | 15 | #include <gdb.h> |
de56407f | 16 | #include <errno.h> |
17 | #include <strings.h> | |
529a5b0d | 18 | #include <pwd.h> |
2ad0a777 | 19 | #include <moira.h> |
45c91bf7 | 20 | #include <sys/file.h> |
21 | #include <sys/ioctl.h> | |
de56407f | 22 | #include "update.h" |
de56407f | 23 | |
45c91bf7 | 24 | extern int auth_001(), inst_001(); |
de56407f | 25 | extern int xfer_002(), exec_002(); |
26 | ||
27 | extern int sync_proc(), quit(); | |
529a5b0d | 28 | extern char *config_lookup(); |
de56407f | 29 | |
30 | extern void gdb_debug(); | |
31 | extern int exit(), abort(), errno; | |
45c91bf7 | 32 | extern STRING instructions; |
de56407f | 33 | |
34 | CONNECTION conn; | |
35 | int code; | |
36 | char *whoami; | |
37 | ||
45c91bf7 | 38 | int have_authorization = 0; |
39 | int have_file = 0; | |
40 | int have_instructions = 0; | |
41 | int done = 0; | |
529a5b0d | 42 | int uid = 0; |
45c91bf7 | 43 | |
de56407f | 44 | #define send_int(n) \ |
45 | (_send_int=(n),send_object(conn,(char *)&_send_int,INTEGER_T)) | |
46 | int _send_int; | |
47 | ||
48 | struct _dt { | |
49 | char *str; | |
50 | int (*proc)(); | |
51 | } dispatch_table[] = { | |
52 | { "INST_001", inst_001 }, | |
53 | { "AUTH_001", auth_001 }, | |
de56407f | 54 | { "XFER_002", xfer_002 }, |
55 | { "EXEC_002", exec_002 }, | |
56 | { "quit", quit }, | |
57 | { (char *)NULL, abort } | |
58 | }; | |
59 | ||
529a5b0d | 60 | /* general scratch space -- useful for building error messages et al... */ |
de56407f | 61 | char buf[BUFSIZ]; |
529a5b0d | 62 | |
de56407f | 63 | |
64 | main(argc, argv) | |
65 | int argc; | |
66 | char **argv; | |
67 | { | |
68 | STRING str; | |
69 | struct _dt *d; | |
529a5b0d | 70 | char *p; |
45c91bf7 | 71 | int n; |
de56407f | 72 | |
73 | #ifdef DEBUG | |
74 | gdb_debug(GDB_NOFORK); | |
75 | #endif /* DEBUG */ | |
76 | ||
77 | whoami = rindex(argv[0], '/'); | |
78 | if (whoami) | |
79 | whoami++; | |
80 | else | |
81 | whoami = argv[0]; | |
82 | ||
83 | /* interpret arguments here */ | |
84 | if (argc != 1) { | |
85 | fprintf(stderr, "Usage: %s\n", whoami); | |
86 | exit(1); | |
87 | } | |
de56407f | 88 | |
45c91bf7 | 89 | #ifndef DEBUG |
529a5b0d | 90 | if (!config_lookup("nofork")) { |
91 | if (fork()) | |
92 | exit(0); | |
93 | n = open("/dev/tty", O_RDWR|FNDELAY); | |
94 | if (n > 0) { | |
95 | (void) ioctl(n, TIOCNOTTY, (char *)NULL); | |
96 | (void) close(n); | |
97 | } | |
98 | } else | |
99 | gdb_debug(GDB_NOFORK); | |
45c91bf7 | 100 | #endif |
101 | ||
102 | umask(0022); | |
0dac1a73 | 103 | initialize_sms_error_table(); |
104 | initialize_krb_error_table(); | |
2ad0a777 | 105 | mr_update_initialize(); |
de56407f | 106 | |
107 | /* wait for connection */ | |
108 | gdb_init(); | |
529a5b0d | 109 | /* If the config file contains a line "port portname", the daemon |
110 | * will listen on the named port rather than SERVICE_NAME "sms_update" | |
111 | */ | |
112 | if ((p = config_lookup("port")) == NULL) | |
113 | p = SERVICE_NAME; | |
114 | conn = create_forking_server(p, 0); | |
115 | ||
116 | /* If the config file contains a line "user username", the | |
117 | * daemon will run with that user's UID. | |
118 | */ | |
119 | if (p = config_lookup("user")) { | |
120 | struct passwd *pw; | |
121 | pw = getpwnam(p); | |
122 | if (pw == 0) { | |
123 | com_err(whoami, errno, "Unable to find user %s\n", p); | |
124 | exit(1); | |
125 | } | |
126 | uid = pw->pw_uid; | |
127 | } | |
128 | ||
129 | /* If the config file contains a line "chroot /dir/name", the | |
130 | * daemon will run chrooted to that directory. | |
131 | */ | |
132 | if (p = config_lookup("chroot")) { | |
133 | if (chroot(p) < 0) { | |
134 | com_err(whoami, errno, "unable to chroot to %s", p); | |
135 | exit(1); | |
136 | } | |
137 | } | |
138 | ||
de56407f | 139 | if (!conn) { |
529a5b0d | 140 | com_err(whoami, errno, "can't get connection"); |
141 | exit(1); | |
de56407f | 142 | } |
143 | if (connection_status(conn) == CON_STOPPED) { | |
144 | com_err(whoami, connection_errno(conn), ": can't get connection"); | |
145 | exit(1); | |
146 | } | |
147 | ||
2ad0a777 | 148 | mr_log_info("got connection"); |
de56407f | 149 | /* got a connection; loop forever */ |
150 | while (1) { | |
151 | register char *cp; | |
152 | code = receive_object(conn, (char *)&str, STRING_T); | |
153 | if (code) { | |
529a5b0d | 154 | com_err(whoami, connection_errno(conn), "receiving command"); |
155 | sever_connection(conn); | |
156 | exit(1); | |
de56407f | 157 | } |
158 | cp = index(STRING_DATA(str), ' '); | |
159 | if (cp) | |
160 | *cp = '\0'; | |
161 | for (d = dispatch_table; d->str; d++) { | |
162 | if (!strcmp(d->str, STRING_DATA(str))) { | |
163 | if (cp) | |
164 | *cp = ' '; | |
165 | #ifdef DEBUG | |
166 | printf("got request: %s\n", STRING_DATA(str)); | |
167 | #endif /* DEBUG */ | |
168 | (void)(d->proc)(STRING_DATA(str)); | |
169 | goto ok; | |
170 | } | |
171 | } | |
172 | sprintf(buf, "unknown request received: %s\n", STRING_DATA(str)); | |
2ad0a777 | 173 | mr_log_error(buf); |
174 | code = send_int(MR_UNKNOWN_PROC); | |
de56407f | 175 | if (code) { |
529a5b0d | 176 | com_err(whoami, connection_errno(conn), "sending UNKNOWN_PROC"); |
de56407f | 177 | } |
178 | ok: | |
179 | string_free(&str); | |
180 | } | |
181 | } | |
182 | ||
183 | int | |
184 | send_ok() | |
185 | { | |
186 | static int zero = 0; | |
187 | return((code = send_object(conn, (char *)&zero, INTEGER_T))); | |
188 | } | |
45c91bf7 | 189 | |
190 | ||
191 | initialize() | |
192 | { | |
193 | /* keep have_authorization around */ | |
194 | have_file = 0; | |
195 | have_instructions = 0; | |
196 | done = 0; | |
197 | if (STRING_DATA(instructions) != (char *)NULL) | |
198 | string_free(&instructions); | |
199 | } | |
200 | ||
201 | ||
202 | /* | |
203 | * quit request: | |
204 | * | |
205 | * syntax: | |
206 | * >>> quit | |
207 | * <<< (int)0 | |
208 | * any arguments are ignored | |
209 | * | |
210 | * function: | |
2ad0a777 | 211 | * closes connection from MR |
45c91bf7 | 212 | */ |
213 | int | |
214 | quit(str) | |
215 | char *str; | |
216 | { | |
217 | #ifdef lint | |
218 | str = (char *)NULL; | |
219 | #endif /* lint */ | |
220 | (void) send_ok(); | |
221 | sever_connection(conn); | |
2ad0a777 | 222 | mr_log_info("Closing connection."); |
45c91bf7 | 223 | exit(0); |
224 | } | |
225 | ||
226 | ||
227 | /* | |
228 | * lose(msg) | |
229 | * | |
230 | * put <msg> to log as error, break connection, and exit | |
231 | */ | |
232 | ||
233 | lose(msg) | |
234 | char *msg; | |
235 | { | |
529a5b0d | 236 | com_err(whoami, code, msg); |
45c91bf7 | 237 | if (conn) |
238 | sever_connection(conn); | |
239 | exit(1); | |
240 | } | |
241 | ||
242 | /* | |
243 | * report_error(msg) | |
244 | * | |
245 | * send back (external) <code>; if error, punt big with <lose(msg)> | |
246 | */ | |
247 | ||
248 | report_error(msg) | |
249 | char *msg; | |
250 | { | |
251 | code = send_object(conn, (char *)&code, INTEGER_T); | |
252 | if (code) { | |
253 | code = connection_errno(conn); | |
254 | lose(msg); | |
255 | } | |
256 | } | |
257 | ||
258 | /* | |
259 | * reject_call(c) | |
260 | * | |
261 | * set (external) <code> to <c> and call <report_error> | |
262 | */ | |
263 | ||
264 | reject_call(c) | |
265 | int c; | |
266 | { | |
267 | code = c; | |
268 | report_error("call rejected"); | |
269 | } |