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output options: expand ~

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This commit is contained in:
smitsohu 2021-07-21 23:56:26 +02:00
parent a25e4a1011
commit 02ebd9a099
1 changed files with 10 additions and 2 deletions
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12
src/firejail/output.c
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@ -50,13 +50,21 @@ void check_output(int argc, char **argv) {
if (!outindex)
return;
// check filename
drop_privs(0);
char *outfile = argv[outindex];
outfile += (enable_stderr)? 16:9;
// check filename
invalid_filename(outfile, 0); // no globbing
// expand user home directory
if (outfile[0] == '~') {
char *full;
if (asprintf(&full, "%s%s", cfg.homedir, outfile + 1) == -1)
errExit("asprintf");
outfile = full;
}
// do not accept directories, links, and files with ".."
if (strstr(outfile, "..") || is_link(outfile) || is_dir(outfile)) {
fprintf(stderr, "Error: invalid output file. Links, directories and files with \"..\" are not allowed.\n");