diff options
Diffstat (limited to 'common/sysutils.c')
| -rw-r--r-- | common/sysutils.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/common/sysutils.c b/common/sysutils.c index 745b762ba..80aa3a04a 100644 --- a/common/sysutils.c +++ b/common/sysutils.c @@ -682,6 +682,48 @@ check_special_filename (const char *fname, int for_write, int notranslate) } +/* Check whether FNAME has the form "-&nnnn", where N is a number + * representing a file. Returns GNUPG_INVALID_FD if it is not the + * case. Returns a file descriptor on POSIX, a system handle on + * Windows. */ +gnupg_fd_t +gnupg_check_special_filename (const char *fname) +{ + if (allow_special_filenames + && fname && *fname == '-' && fname[1] == '&') + { + int i; + + fname += 2; + for (i=0; digitp (fname+i); i++ ) + ; + if (!fname[i]) + { + es_syshd_t syshd; + + if (gnupg_parse_fdstr (fname, &syshd)) + return GNUPG_INVALID_FD; + +#ifdef HAVE_W32_SYSTEM + if (syshd.type == ES_SYSHD_FD) + { + if (syshd.u.fd == 0) + return GetStdHandle (STD_INPUT_HANDLE); + else if (syshd.u.fd == 1) + return GetStdHandle (STD_OUTPUT_HANDLE); + else if (syshd.u.fd == 2) + return GetStdHandle (STD_ERROR_HANDLE); + } + else + return syshd.u.handle; +#else + return syshd.u.fd; +#endif + } + } + return GNUPG_INVALID_FD; +} + /* Replacement for tmpfile(). This is required because the tmpfile function of Windows' runtime library is broken, insecure, ignores TMPDIR and so on. In addition we create a file with an inheritable |