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common: Add translate_sys2libc_fdstr.

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* common/sysutils.c (translate_sys2libc_fdstr): New.

--

GnuPG-bug-id: 6551
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2023-06-22 11:38:44 +09:00
parent 28a4d0d4f5
commit e9e7b5425f
No known key found for this signature in database
GPG Key ID: 640114AF89DE6054
2 changed files with 51 additions and 0 deletions
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50
common/sysutils.c
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@ -575,6 +575,56 @@ translate_sys2libc_fd_int (int fd, int for_write)
}
/* This is the same as translate_sys2libc_fd but takes a string
which may represent a system handle.
(1) 0, 1, or 2 which means stdin, stdout, and stderr, respectively.
(2) Integer representation (by %d of printf).
(3) Hex representation which starts as "0x".
*/
int
translate_sys2libc_fdstr (const char *fdstr, int for_write)
{
#ifdef HAVE_W32_SYSTEM
gnupg_fd_t fd;
char *endptr;
int base;
if (!strcmp (fdstr, "0"))
return 0;
else if (!strcmp (fdstr, "1"))
return 1;
else if (!strcmp (fdstr, "2"))
return 2;
if (!strncmp (fdstr, "0x", 2))
{
base = 16;
fdstr += 2;
}
else
base = 10;
gpg_err_set_errno (0);
#ifdef _WIN64
fd = (gnupg_fd_t)strtoll (fdstr, &endptr, base);
#else
fd = (gnupg_fd_t)strtol (fdstr, &endptr, base);
#endif
if (errno != 0 || endptr == fdstr || *endptr != '\0')
{
log_error ("FDSTR error: %s\n", fdstr);
return -1;
}
return translate_sys2libc_fd (fd, for_write);
#else
(void)for_write;
return atoi (fdstr);
#endif
}
/* Check whether FNAME has the form "-&nnnn", where N is a non-zero
* number. Returns this number or -1 if it is not the case. If the
* caller wants to use the file descriptor for writing FOR_WRITE shall

1
common/sysutils.h
View File

@ -74,6 +74,7 @@ void gnupg_sleep (unsigned int seconds);
void gnupg_usleep (unsigned int usecs);
int translate_sys2libc_fd (gnupg_fd_t fd, int for_write);
int translate_sys2libc_fd_int (int fd, int for_write);
int translate_sys2libc_fdstr (const char *fdstr, int for_write);
int check_special_filename (const char *fname, int for_write, int notranslate);
FILE *gnupg_tmpfile (void);
void gnupg_reopen_std (const char *pgmname);