/*
- * $Id: messages.c,v 1.12 2002-01-03 17:29:10 sibaz Exp $
- *
* Copyright (c) 1997 Adrian Sun (asun@zoology.washington.edu)
* All Rights Reserved. See COPYRIGHT.
*/
#include "config.h"
#endif /* HAVE_CONFIG_H */
+#include <unistd.h>
#include <stdio.h>
#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
#include <atalk/afp.h>
-#include <syslog.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#include "globals.h"
+#include <atalk/dsi.h>
+#include <atalk/util.h>
+#include <atalk/unix.h>
+#include <atalk/logger.h>
+#include <atalk/globals.h>
+
#include "misc.h"
#define MAXMESGSIZE 199
/* this is only used by afpd children, so it's okay. */
-static char servermesg[MAXMESGSIZE] = "";
-
-void setmessage(const char *message)
+static char servermesg[MAXPATHLEN] = "";
+static char localized_message[MAXPATHLEN] = "";
+
+/*!
+ * Copy AFP message to message buffer
+ * @param message (r) message to send
+ * @returns 0 if this message is being set the first time, return 1 if the preceeding
+ * message was the same
+ */
+int setmessage(const char *message)
{
- strncpy(servermesg, message, MAXMESGSIZE);
+ if (strncmp(message, servermesg, MAXMESGSIZE) == 0)
+ return 1;
+ strlcpy(servermesg, message, MAXMESGSIZE);
+ return 0;
}
-void readmessage(void)
+void readmessage(AFPObj *obj)
{
/* Read server message from file defined as SERVERTEXT */
#ifdef SERVERTEXT
FILE *message;
char * filename;
- int i, rc;
+ unsigned int i;
+ int rc;
static int c;
- uid_t euid;
+ uint32_t maxmsgsize;
+
+ maxmsgsize = MIN(MAX(obj->dsi->attn_quantum, MAXMESGSIZE), MAXPATHLEN);
i=0;
/* Construct file name SERVERTEXT/message.[pid] */
- filename=malloc(sizeof(SERVERTEXT)+15);
+ if ( NULL == (filename=(char*) malloc(sizeof(SERVERTEXT)+15)) ) {
+ LOG(log_error, logtype_afpd, "readmessage: malloc: %s", strerror(errno) );
+ return;
+ }
+
sprintf(filename, "%s/message.%d", SERVERTEXT, getpid());
#ifdef DEBUG
- syslog(LOG_DEBUG, "Reading file %s ", filename);
-#endif /* DEBUG */
+ LOG(log_debug9, logtype_afpd, "Reading file %s ", filename);
+#endif
message=fopen(filename, "r");
if (message==NULL) {
- syslog(LOG_INFO, "Unable to open file %s", filename);
+ /* try without the process id */
sprintf(filename, "%s/message", SERVERTEXT);
message=fopen(filename, "r");
}
/* if either message.pid or message exists */
if (message!=NULL) {
/* added while loop to get characters and put in servermesg */
- while ((( c=fgetc(message)) != EOF) && (i < (MAXMESGSIZE - 1))) {
+ while ((( c=fgetc(message)) != EOF) && (i < (maxmsgsize - 1))) {
if ( c == '\n') c = ' ';
servermesg[i++] = c;
}
/* cleanup */
fclose(message);
- /* Save effective uid and switch to root to delete file. */
- /* Delete will probably fail otherwise, but let's try anyways */
- euid = geteuid();
- if (seteuid(0) < 0) {
- syslog(LOG_ERR, "Could not switch back to root: %m");
- }
+ become_root();
- rc = unlink(filename);
+ if ((rc = unlink(filename)) != 0)
+ LOG(log_error, logtype_afpd, "File '%s' could not be deleted", strerror(errno));
- /* Drop privs again, failing this is very bad */
- if (seteuid(euid) < 0) {
- syslog(LOG_ERR, "Could not switch back to uid %d: %m", euid);
- }
+ unbecome_root();
if (rc < 0) {
- syslog(LOG_ERR, "Error deleting %s: %m", filename);
+ LOG(log_error, logtype_afpd, "Error deleting %s: %s", filename, strerror(rc));
}
#ifdef DEBUG
else {
- syslog(LOG_INFO, "Deleted %s", filename);
+ LOG(log_debug9, logtype_afpd, "Deleted %s", filename);
}
- syslog(LOG_INFO, "Set server message to \"%s\"", servermesg);
-#endif /* DEBUG */
+ LOG(log_debug9, logtype_afpd, "Set server message to \"%s\"", servermesg);
+#endif
}
free(filename);
#endif /* SERVERTEXT */
}
-int afp_getsrvrmesg(obj, ibuf, ibuflen, rbuf, rbuflen)
-AFPObj *obj;
-char *ibuf, *rbuf;
-int ibuflen, *rbuflen;
+int afp_getsrvrmesg(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
{
char *message;
- u_int16_t type, bitmap;
+ uint16_t type, bitmap;
+ uint16_t msgsize;
+ size_t outlen = 0;
+ size_t msglen = 0;
+ int utf8 = 0;
+
+ *rbuflen = 0;
+
+ msgsize = MAX(obj->dsi->attn_quantum, MAXMESGSIZE);
memcpy(&type, ibuf + 2, sizeof(type));
memcpy(&bitmap, ibuf + 4, sizeof(bitmap));
+ message = servermesg;
switch (ntohs(type)) {
case AFPMESG_LOGIN: /* login */
- message = obj->options.loginmesg;
+ /* at least TIGER loses server messages
+ * if it receives a server msg attention before
+ * it has asked the login msg...
+ * Workaround: concatenate the two if any, ugly.
+ */
+ if (obj->options.loginmesg) {
+ if (*message)
+ strlcat(message, " - ", MAXMESGSIZE);
+ strlcat(message, obj->options.loginmesg, MAXMESGSIZE);
+ }
break;
case AFPMESG_SERVER: /* server */
- message = servermesg;
break;
default:
- *rbuflen = 0;
return AFPERR_BITMAP;
}
/* output format:
* message type: 2 bytes
* bitmap: 2 bytes
- * message length: 1 byte
- * message: up to 199 bytes
+ * message length: 1 byte ( 2 bytes for utf8)
+ * message: up to 199 bytes (dsi attn_quantum for utf8)
*/
memcpy(rbuf, &type, sizeof(type));
rbuf += sizeof(type);
+ *rbuflen += sizeof(type);
memcpy(rbuf, &bitmap, sizeof(bitmap));
rbuf += sizeof(bitmap);
- *rbuflen = strlen(message);
- if (*rbuflen > MAXMESGSIZE)
- *rbuflen = MAXMESGSIZE;
- *rbuf++ = *rbuflen;
- memcpy(rbuf, message, *rbuflen);
-
- *rbuflen += 5;
-
+ *rbuflen += sizeof(bitmap);
+
+ utf8 = ntohs(bitmap) & 2;
+ msglen = strlen(message);
+ if (msglen > msgsize)
+ msglen = msgsize;
+
+ if (msglen) {
+ if ( (size_t)-1 == (outlen = convert_string(obj->options.unixcharset, utf8?CH_UTF8_MAC:obj->options.maccharset,
+ message, msglen, localized_message, msgsize)) )
+ {
+ memcpy(rbuf+((utf8)?2:1), message, msglen); /*FIXME*/
+ outlen = msglen;
+ }
+ else
+ {
+ memcpy(rbuf+((utf8)?2:1), localized_message, outlen);
+ }
+ }
+
+ if ( utf8 ) {
+ /* UTF8 message, 2 byte length */
+ msgsize = htons(outlen);
+ memcpy(rbuf, &msgsize, sizeof(msgsize));
+ *rbuflen += sizeof(msgsize);
+ }
+ else {
+ *rbuf = outlen;
+ *rbuflen += 1;
+ }
+ *rbuflen += outlen;
+// *message = 0;
return AFP_OK;
}
projects / netatalk.git / blobdiff