2 * $Id: messages.c,v 1.23 2009-11-24 15:44:40 didg Exp $
4 * Copyright (c) 1997 Adrian Sun (asun@zoology.washington.edu)
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
14 #endif /* HAVE_UNISTD_H */
19 #include <atalk/afp.h>
20 #include <atalk/dsi.h>
21 #include <atalk/util.h>
22 #include <atalk/logger.h>
23 #include <atalk/globals.h>
28 #define MAXMESGSIZE 199
30 /* this is only used by afpd children, so it's okay. */
31 static char servermesg[MAXPATHLEN] = "";
32 static char localized_message[MAXPATHLEN] = "";
34 void setmessage(const char *message)
36 strlcpy(servermesg, message, MAXMESGSIZE);
39 void readmessage(AFPObj *obj)
41 /* Read server message from file defined as SERVERTEXT */
51 maxmsgsize = (obj->proto == AFPPROTO_DSI)?MIN(MAX(((DSI*)obj->handle)->attn_quantum, MAXMESGSIZE),MAXPATHLEN):MAXMESGSIZE;
54 /* Construct file name SERVERTEXT/message.[pid] */
55 if ( NULL == (filename=(char*) malloc(sizeof(SERVERTEXT)+15)) ) {
56 LOG(log_error, logtype_afpd, "readmessage: malloc: %s", strerror(errno) );
60 sprintf(filename, "%s/message.%d", SERVERTEXT, getpid());
63 LOG(log_debug9, logtype_afpd, "Reading file %s ", filename);
66 message=fopen(filename, "r");
68 /* try without the process id */
69 sprintf(filename, "%s/message", SERVERTEXT);
70 message=fopen(filename, "r");
73 /* if either message.pid or message exists */
75 /* added while loop to get characters and put in servermesg */
76 while ((( c=fgetc(message)) != EOF) && (i < (maxmsgsize - 1))) {
77 if ( c == '\n') c = ' ';
85 /* Save effective uid and switch to root to delete file. */
86 /* Delete will probably fail otherwise, but let's try anyways */
89 LOG(log_error, logtype_afpd, "Could not switch back to root: %s",
93 if ((rc = unlink(filename)) != 0)
94 LOG(log_error, logtype_afpd, "File '%s' could not be deleted", strerror(errno));
96 /* Drop privs again, failing this is very bad */
97 if (seteuid(euid) < 0) {
98 LOG(log_error, logtype_afpd, "Could not switch back to uid %d: %s", euid, strerror(errno));
103 LOG(log_error, logtype_afpd, "Error deleting %s: %s", filename, strerror(rc));
107 LOG(log_debug9, logtype_afpd, "Deleted %s", filename);
110 LOG(log_debug9, logtype_afpd, "Set server message to \"%s\"", servermesg);
114 #endif /* SERVERTEXT */
117 int afp_getsrvrmesg(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
120 u_int16_t type, bitmap;
128 msgsize = (obj->proto == AFPPROTO_DSI)?MAX(((DSI*)obj->handle)->attn_quantum, MAXMESGSIZE):MAXMESGSIZE;
130 memcpy(&type, ibuf + 2, sizeof(type));
131 memcpy(&bitmap, ibuf + 4, sizeof(bitmap));
133 message = servermesg;
134 switch (ntohs(type)) {
135 case AFPMESG_LOGIN: /* login */
136 /* at least TIGER loses server messages
137 * if it receives a server msg attention before
138 * it has asked the login msg...
139 * Workaround: concatenate the two if any, ugly.
141 if (*message && *obj->options.loginmesg) {
142 strlcat(message, " - ", MAXMESGSIZE);
144 strlcat(message, obj->options.loginmesg, MAXMESGSIZE);
146 case AFPMESG_SERVER: /* server */
149 return AFPERR_BITMAP;
153 * message type: 2 bytes
155 * message length: 1 byte ( 2 bytes for utf8)
156 * message: up to 199 bytes (dsi attn_quantum for utf8)
158 memcpy(rbuf, &type, sizeof(type));
159 rbuf += sizeof(type);
160 *rbuflen += sizeof(type);
161 memcpy(rbuf, &bitmap, sizeof(bitmap));
162 rbuf += sizeof(bitmap);
163 *rbuflen += sizeof(bitmap);
165 utf8 = ntohs(bitmap) & 2;
166 msglen = strlen(message);
167 if (msglen > msgsize)
171 if ( (size_t)-1 == (outlen = convert_string(obj->options.unixcharset, utf8?CH_UTF8_MAC:obj->options.maccharset,
172 message, msglen, localized_message, msgsize)) )
174 memcpy(rbuf+((utf8)?2:1), message, msglen); /*FIXME*/
179 memcpy(rbuf+((utf8)?2:1), localized_message, outlen);
184 /* UTF8 message, 2 byte length */
185 msgsize = htons(outlen);
186 memcpy(rbuf, &msgsize, sizeof(msgsize));
187 *rbuflen += sizeof(msgsize);