diff options
Diffstat (limited to 'nx-X11/lib/Xau/AuRead.c')
| -rw-r--r-- | nx-X11/lib/Xau/AuRead.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/nx-X11/lib/Xau/AuRead.c b/nx-X11/lib/Xau/AuRead.c new file mode 100644 index 000000000..60a0d747f --- /dev/null +++ b/nx-X11/lib/Xau/AuRead.c @@ -0,0 +1,137 @@ +/* $Xorg: AuRead.c,v 1.4 2001/02/09 02:03:42 xorgcvs Exp $ */ + +/* + +Copyright 1988, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + +*/ +/* $XFree86: xc/lib/Xau/AuRead.c,v 1.5 2001/07/25 15:04:48 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <X11/Xauth.h> +#include <stdlib.h> +#include <errno.h> + +static int +read_short (unsigned short *shortp, FILE *file) +{ + unsigned char file_short[2]; + + /* + * Added a check on EINTR to prevent the fread() call to be + * interrupted by any signal not blocked by OsBlockSignals(). + */ + + for (;;) { + if (fread ((char *) file_short, (int) sizeof (file_short), 1, file) != 1) { + if (errno == EINTR && ferror (file)) { + perror ("Reading from auth file"); + clearerr (file); + continue; + } + return 0; + } + break; + } + *shortp = file_short[0] * 256 + file_short[1]; + return 1; +} + +static int +read_counted_string (unsigned short *countp, char **stringp, FILE *file) +{ + unsigned short len; + char *data; + + if (read_short (&len, file) == 0) + return 0; + if (len == 0) { + data = 0; + } else { + data = malloc ((unsigned) len); + if (!data) + return 0; + for (;;) + { + if (fread (data, (int) sizeof (char), (int) len, file) != len) + { + if (errno == EINTR && ferror (file)) + { + perror ("Reading from auth file"); + clearerr (file); + continue; + } + bzero (data, len); + free (data); + return 0; + } + break; + } + } + *stringp = data; + *countp = len; + return 1; +} + +Xauth * +XauReadAuth (auth_file) +FILE *auth_file; +{ + Xauth local; + Xauth *ret; + + if (read_short (&local.family, auth_file) == 0) + return 0; + if (read_counted_string (&local.address_length, &local.address, auth_file) == 0) + return 0; + if (read_counted_string (&local.number_length, &local.number, auth_file) == 0) { + if (local.address) free (local.address); + return 0; + } + if (read_counted_string (&local.name_length, &local.name, auth_file) == 0) { + if (local.address) free (local.address); + if (local.number) free (local.number); + return 0; + } + if (read_counted_string (&local.data_length, &local.data, auth_file) == 0) { + if (local.address) free (local.address); + if (local.number) free (local.number); + if (local.name) free (local.name); + return 0; + } + ret = (Xauth *) malloc (sizeof (Xauth)); + if (!ret) { + if (local.address) free (local.address); + if (local.number) free (local.number); + if (local.name) free (local.name); + if (local.data) { + bzero (local.data, local.data_length); + free (local.data); + } + return 0; + } + *ret = local; + return ret; +} |