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>
27 #define MAXMESGSIZE 199
29 /* this is only used by afpd children, so it's okay. */
30 static char servermesg[MAXPATHLEN] = "";
31 static char localized_message[MAXPATHLEN] = "";
33 void setmessage(const char *message)
35 strlcpy(servermesg, message, MAXMESGSIZE);
38 void readmessage(AFPObj *obj)
40 /* Read server message from file defined as SERVERTEXT */
50 maxmsgsize = (obj->proto == AFPPROTO_DSI)?MIN(MAX(((DSI*)obj->handle)->attn_quantum, MAXMESGSIZE),MAXPATHLEN):MAXMESGSIZE;
53 /* Construct file name SERVERTEXT/message.[pid] */
54 if ( NULL == (filename=(char*) malloc(sizeof(SERVERTEXT)+15)) ) {
55 LOG(log_error, logtype_afpd, "readmessage: malloc: %s", strerror(errno) );
59 sprintf(filename, "%s/message.%d", SERVERTEXT, getpid());
62 LOG(log_debug9, logtype_afpd, "Reading file %s ", filename);
65 message=fopen(filename, "r");
67 /* try without the process id */
68 sprintf(filename, "%s/message", SERVERTEXT);
69 message=fopen(filename, "r");
72 /* if either message.pid or message exists */
74 /* added while loop to get characters and put in servermesg */
75 while ((( c=fgetc(message)) != EOF) && (i < (maxmsgsize - 1))) {
76 if ( c == '\n') c = ' ';
84 /* Save effective uid and switch to root to delete file. */
85 /* Delete will probably fail otherwise, but let's try anyways */
88 LOG(log_error, logtype_afpd, "Could not switch back to root: %s",
92 if ((rc = unlink(filename)) != 0)
93 LOG(log_error, logtype_afpd, "File '%s' could not be deleted", strerror(errno));
95 /* Drop privs again, failing this is very bad */
96 if (seteuid(euid) < 0) {
97 LOG(log_error, logtype_afpd, "Could not switch back to uid %d: %s", euid, strerror(errno));
102 LOG(log_error, logtype_afpd, "Error deleting %s: %s", filename, strerror(rc));
106 LOG(log_debug9, logtype_afpd, "Deleted %s", filename);
109 LOG(log_debug9, logtype_afpd, "Set server message to \"%s\"", servermesg);
113 #endif /* SERVERTEXT */
116 int afp_getsrvrmesg(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
119 u_int16_t type, bitmap;
127 msgsize = (obj->proto == AFPPROTO_DSI)?MAX(((DSI*)obj->handle)->attn_quantum, MAXMESGSIZE):MAXMESGSIZE;
129 memcpy(&type, ibuf + 2, sizeof(type));
130 memcpy(&bitmap, ibuf + 4, sizeof(bitmap));
132 message = servermesg;
133 switch (ntohs(type)) {
134 case AFPMESG_LOGIN: /* login */
135 /* at least TIGER loses server messages
136 * if it receives a server msg attention before
137 * it has asked the login msg...
138 * Workaround: concatenate the two if any, ugly.
140 if (*message && *obj->options.loginmesg) {
141 strlcat(message, " - ", MAXMESGSIZE);
143 strlcat(message, obj->options.loginmesg, MAXMESGSIZE);
145 case AFPMESG_SERVER: /* server */
148 return AFPERR_BITMAP;
152 * message type: 2 bytes
154 * message length: 1 byte ( 2 bytes for utf8)
155 * message: up to 199 bytes (dsi attn_quantum for utf8)
157 memcpy(rbuf, &type, sizeof(type));
158 rbuf += sizeof(type);
159 *rbuflen += sizeof(type);
160 memcpy(rbuf, &bitmap, sizeof(bitmap));
161 rbuf += sizeof(bitmap);
162 *rbuflen += sizeof(bitmap);
164 utf8 = ntohs(bitmap) & 2;
165 msglen = strlen(message);
166 if (msglen > msgsize)
170 if ( (size_t)-1 == (outlen = convert_string(obj->options.unixcharset, utf8?CH_UTF8_MAC:obj->options.maccharset,
171 message, msglen, localized_message, msgsize)) )
173 memcpy(rbuf+((utf8)?2:1), message, msglen); /*FIXME*/
178 memcpy(rbuf+((utf8)?2:1), localized_message, outlen);
183 /* UTF8 message, 2 byte length */
184 msgsize = htons(outlen);
185 memcpy(rbuf, &msgsize, sizeof(msgsize));
186 *rbuflen += sizeof(msgsize);