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$NetBSD: patch-ac,v 1.1 2004/02/09 09:17:50 wennmach Exp $
Security patches for jitterbug (taken from Debian GNU/Linux).
See http://www.debian.org/security/2004/dsa-420
--- new_message.c.orig Wed Nov 11 13:30:17 1998
+++ new_message.c Wed Jan 14 17:34:04 2004
@@ -206,6 +206,133 @@
smtp_end_mail(fd);
}
+/* This function should always return success */
+static int mail_failure(char* from, char* to, char* content)
+{
+ int fd;
+ fd = smtp_start_mail(from, to, NULL, NULL, "Request failed", strlen(content));
+ if ( fd == -1 ) {
+ fprintf(stderr, "Failed to send failure\n");
+ return 0;
+ }
+ smtp_write(fd, "\n");
+ smtp_write_data(fd, content);
+ smtp_end_mail(fd);
+ return 0;
+}
+
+static int is_a_bug(char* name)
+{
+ if (*name >= '1' && *name <= '9')
+ return !is_directory(name);
+ return 0;
+}
+
+static int get_bug(char *mbuf, char* to, char *query)
+{
+ int fd;
+ char *from, *p;
+ char *subject="Jitterbug results";
+ char buf[1024];
+ unsigned int size=0;
+ char boundary[128];
+ struct stat st;
+ char *bug;
+ char* msg_id;
+ char *msg_list;
+
+ snprintf(boundary, sizeof(boundary), "jitterbug-burp-%d-%d", getpid(), time(NULL));
+
+ /* maybe check for lp_download? */
+ /* maybe add info to audit? */
+ from = lp_from_address();
+
+ while (*query && *query == ' ') query++;
+ if (!strncmp(query, "list", 4)) {
+ char** dir_l, **file_l;
+ int i, j;
+ query += 4;
+ fd = smtp_start_mail(from, to, NULL, NULL, subject, 0);
+ if ( fd == -1 )
+ return 1;
+
+ msg_id = getmailheader(mbuf, "Message-ID:", 0);
+ if ( msg_id )
+ smtp_write(fd, "References: %s\n", msg_id);
+ smtp_write(fd, "\nList for query: %s\n\n", query);
+ trim_string(query, " ", " ");
+ /* use strtok to allow multiple queries */
+ if (!*query || *query == '/' || *query == '.') {
+ query = ".";
+ dir_l = load_dir_list(query, is_directory);
+ } else {
+ dir_l = new_list();
+ add_list_item(dir_l, query);
+ }
+ for (i=0; dir_l && dir_l[i]; ++i) {
+ file_l = load_dir_list(dir_l[i], is_a_bug);
+ /* maybe add subject, from, ... */
+ for (j=0; file_l && file_l[j]; ++j)
+ smtp_write(fd, "%s/%s\n", dir_l[i], file_l[j]);
+ free_list(file_l);
+ }
+ free_list(dir_l);
+ smtp_end_mail(fd);
+ return 0;
+ } else if (!strncmp(query, "get", 3)) {
+ query += 3;
+ } else if (!strncmp(query, "search", 6)) {
+ query += 6;
+ snprintf(buf, sizeof(buf), "Not implemeted (%s)\n", query);
+ return mail_failure(from, to, buf);
+ } else {
+ snprintf(buf, sizeof(buf), "Not implemeted (%s)\n", query);
+ return mail_failure(from, to, buf);
+ }
+
+ fd = smtp_start_mail(from, to, NULL, NULL, subject, 0);
+ if ( fd == -1 )
+ return 1;
+
+ msg_id = getmailheader(mbuf, "Message-ID:", 0);
+ if ( msg_id )
+ smtp_write(fd, "References: %s\n", msg_id);
+ smtp_write(fd, "Mime-Version: 1.0\n");
+ smtp_write(fd, "Content-Type: multipart/mixed; boundary=%s\n\n", boundary);
+ msg_list = strdup(query);
+ for (query = strtok(msg_list, " \t,;"); query; query = strtok(NULL, " \t,;")) {
+ smtp_write(fd, "\n--%s\nContent-Type: text/plain; charset=us-ascii\n", boundary);
+ /* a few security checks */
+ if (*query == '/' || strchr(query, '.') || !(p=strchr(query, '/'))) {
+ smtp_write(fd, "\nNot allowed (%s)\n", query);
+ continue;
+ }
+ *p = 0;
+ if ( !is_directory(query) ) {
+ smtp_write(fd, "\nNot allowed (%s)\n", query);
+ continue;
+ }
+ *p = '/';
+ bug = load_file(query, &st, 0);
+ if ( !bug ) {
+ smtp_write(fd, "\nCannot load (%s)\n", query);
+ continue;
+ }
+ /* replace / with _ in filename */
+ p = query;
+ while(*p) {
+ if (*p == '/') *p = '_';
+ ++p;
+ }
+ smtp_write(fd, "Content-Disposition: attachment; filename=\"%s\"\n\n", query);
+ smtp_write_data(fd, bug);
+ free(bug);
+ }
+ free(msg_list);
+
+ smtp_end_mail(fd);
+ return 0;
+}
int process_mail(char *def_dir)
{
@@ -253,6 +380,10 @@
return 1;
}
+ if (strncasecmp(from, "MAILER-DAEMON", 13) == 0) {
+ fprintf(stderr,"Ignoring bounced mail\n");
+ return 1;
+ }
/* work out if it has an existing id */
id = getid(mbuf);
@@ -273,6 +404,12 @@
}
}
+ subject = getmailheader(mbuf, "Subject:", 0);
+ if (subject && !strncmp(subject, "GETBUG:", 7)) {
+ unlink(".newnsg");
+ return get_bug(mbuf, from, subject + 7);
+ }
+
if (! *fname) {
char *idfile = load_file(".nextid", NULL, 0);
nextid=1;
@@ -306,7 +443,6 @@
}
/* forward to "forward public" if message not marked private */
- subject = getmailheader(mbuf, "Subject:", 0);
if (subject &&
lp_forward_public() && !strstr(subject,"PRIVATE")) {
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