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-rw-r--r--contrib/tnftp/src/fetch.c36
1 files changed, 22 insertions, 14 deletions
diff --git a/contrib/tnftp/src/fetch.c b/contrib/tnftp/src/fetch.c
index 91b49fd2435a..72153a546b0e 100644
--- a/contrib/tnftp/src/fetch.c
+++ b/contrib/tnftp/src/fetch.c
@@ -547,7 +547,7 @@ fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
url_decode(decodedpath);
if (outfile)
- savefile = ftp_strdup(outfile);
+ savefile = outfile;
else {
cp = strrchr(decodedpath, '/'); /* find savefile */
if (cp != NULL)
@@ -571,8 +571,7 @@ fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
rangestart = rangeend = entitylen = -1;
mtime = -1;
if (restartautofetch) {
- if (strcmp(savefile, "-") != 0 && *savefile != '|' &&
- stat(savefile, &sb) == 0)
+ if (stat(savefile, &sb) == 0)
restart_point = sb.st_size;
}
if (urltype == FILE_URL_T) { /* file:// URLs */
@@ -1098,17 +1097,25 @@ fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
} /* end of ftp:// or http:// specific setup */
/* Open the output file. */
- if (strcmp(savefile, "-") == 0) {
- fout = stdout;
- } else if (*savefile == '|') {
- oldintp = xsignal(SIGPIPE, SIG_IGN);
- fout = popen(savefile + 1, "w");
- if (fout == NULL) {
- warn("Can't execute `%s'", savefile + 1);
- goto cleanup_fetch_url;
+
+ /*
+ * Only trust filenames with special meaning if they came from
+ * the command line
+ */
+ if (outfile == savefile) {
+ if (strcmp(savefile, "-") == 0) {
+ fout = stdout;
+ } else if (*savefile == '|') {
+ oldintp = xsignal(SIGPIPE, SIG_IGN);
+ fout = popen(savefile + 1, "w");
+ if (fout == NULL) {
+ warn("Can't execute `%s'", savefile + 1);
+ goto cleanup_fetch_url;
+ }
+ closefunc = pclose;
}
- closefunc = pclose;
- } else {
+ }
+ if (fout == NULL) {
if ((rangeend != -1 && rangeend <= restart_point) ||
(rangestart == -1 && filesize != -1 && filesize <= restart_point)) {
/* already done */
@@ -1318,7 +1325,8 @@ fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
(*closefunc)(fout);
if (res0)
freeaddrinfo(res0);
- FREEPTR(savefile);
+ if (savefile != outfile)
+ FREEPTR(savefile);
FREEPTR(uuser);
if (pass != NULL)
memset(pass, 0, strlen(pass));