---
LICENSE | 1 +
Makefile | 1 +
README | 1 +
TODO | 1 -
pathchk.1 | 35 +++++++++++++
pathchk.c | 166 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 204 insertions(+), 1 deletion(-)
create mode 100644 pathchk.1
create mode 100644 pathchk.c
diff --git a/LICENSE b/LICENSE
index cb5a797..2a26979 100644
--- a/LICENSE
+++ b/LICENSE
_AT_@ -59,3 +59,4 @@ Authors/contributors include:
© 2015 Quentin Rameau <quinq_AT_quinq.eu.org>
© 2015 Dionysis Grigoropoulos <info_AT_erethon.com>
© 2015 Wolfgang Corcoran-Mathe <first.lord.of.teal_AT_gmail.com>
+© 2016 Mattias Andrée <maandree_AT_kth.se>
diff --git a/Makefile b/Makefile
index 1c09cac..b8cf51a 100644
--- a/Makefile
+++ b/Makefile
_AT_@ -120,6 +120,7 @@ BIN =\
nl\
nohup\
od\
+ pathchk\
paste\
printenv\
printf\
diff --git a/README b/README
index c72ed76..b3005dd 100644
--- a/README
+++ b/README
_AT_@ -58,6 +58,7 @@ The following tools are implemented:
#*|o nl .
=*|o nohup .
=*|o od .
+#* o pathchk .
#*|o paste .
=*|x printenv .
#*|o printf .
diff --git a/TODO b/TODO
index 80dd3ec..a5559d1 100644
--- a/TODO
+++ b/TODO
_AT_@ -10,7 +10,6 @@ diff
ed manpage
install
patch
-pathchk
stty
If you are looking for some work to do on sbase, another option is to
diff --git a/pathchk.1 b/pathchk.1
new file mode 100644
index 0000000..7f36ffc
--- /dev/null
+++ b/pathchk.1
_AT_@ -0,0 +1,35 @@
+.Dd 2016-02-03
+.Dt PATHCHK 1
+.Os sbase
+.Sh NAME
+.Nm pathchk
+.Nd validate filename validity or portability
+.Sh SYNOPSIS
+.Nm
+.Op Fl p
+.Op Fl P
+.Ar file Ar ...
+.Sh DESCRIPTION
+.Nm
+checks that filenames are valid for the system,
+and optional on other POSIX systems.
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl p
+Check for most POSIX systems.
+.It Fl P
+Check for empty pathnames and leading hythens.
+.El
+.Sh EXIT STATUS
+.Bl -tag -width Ds
+.It 0
+A filename was not valid or portable.
+.It > 0
+An error occurred.
+.El
+.Sh STANDARDS
+The
+.Nm
+utility is compliant with the
+.St -p1003.1-2013
+specification.
diff --git a/pathchk.c b/pathchk.c
new file mode 100644
index 0000000..7212863
--- /dev/null
+++ b/pathchk.c
_AT_@ -0,0 +1,166 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <stdint.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+#include "util.h"
+#include "arg.h"
+
+#define PORTABLE_CHARACTER_SET "0123456789._-qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM"
+/* If your system supports more other characters, but not all non-NUL characters, define SYSTEM_CHARACTER_SET. */
+
+static int most = 0;
+static int extra = 0;
+
+static void
+usage(void)
+{
+ fprintf(stderr, "usage: %s [-pP] filename...\n", argv0);
+ exit(1);
+}
+
+static int
+pathchk(char *filename)
+{
+ char *invalid, *invalid_end, *p, *q;
+ const char *character_set;
+ size_t len, maxlen;
+ struct stat _attr;
+#ifdef _PC_NAME_MAX
+ size_t sysmaxlen;
+#endif
+
+ /* Empty? */
+ if (extra && !*filename) {
+ fprintf(stderr, "%s: empty filename\n", argv0);
+ return 1;
+ }
+
+ /* Leading hyphen? */
+ if (extra && ((*filename == '-') || strstr(filename, "/-"))) {
+ fprintf(stderr, "%s: %s: leading '-' in component of filename\n", argv0, filename);
+ return 1;
+ }
+
+ /* Nonportable character? */
+#ifdef SYSTEM_CHARACTER_SET
+ character_set = "/"SYSTEM_CHARACTER_SET;
+#else
+ character_set = 0;
+#endif
+ if (most)
+ character_set = "/"PORTABLE_CHARACTER_SET;
+ if (character_set && *(invalid = filename + strspn(filename, character_set))) {
+ for (invalid_end = invalid + 1; *invalid_end & 0x80; invalid_end++);
+ fprintf(stderr, "%s: %s: ", argv0, filename);
+ *invalid_end = 0;
+ fprintf(stderr, "nonportable character '%s'\n", invalid);
+ return 1;
+ }
+
+ /* Symlink error? Non-searchable directory? */
+ if (lstat(filename, &_attr) && errno != ENOENT) {
+ /* lstat rather than stat, so that if filename is a bad symlink, but
+ * all parents are OK, no error will be detected. */
+ fprintf(stderr, "%s: %s: %s\n", argv0, filename, strerror(errno));
+ return 1;
+ }
+
+ /* Too long pathname? */
+ maxlen = most ? _POSIX_PATH_MAX : SIZE_MAX;
+#ifdef PATH_MAX
+ if (maxlen > PATH_MAX)
+ maxlen = PATH_MAX;
+#endif
+#ifdef _PC_PATH_MAX
+ p = strrchr(filename, '/');
+ if (p)
+ *p = 0;
+ errno = 0;
+ len = (size_t)pathconf(p ? *p ? p : "/" : ".", _PC_PATH_MAX);
+ if (errno) {
+ perror(argv0);
+ exit(1);
+ }
+ if (p)
+ *p = '/';
+ if (maxlen > len)
+ maxlen = len;
+#endif
+ if (strlen(filename) >= maxlen) {
+ fprintf(stderr, "%s: %s: is longer than %zu bytes\n",
+ argv0, filename, maxlen);
+ return 1;
+ }
+
+ /* Too long component? */
+ maxlen = most ? _POSIX_NAME_MAX : SIZE_MAX;
+#ifdef NAME_MAX
+ if (maxlen > NAME_MAX)
+ maxlen = NAME_MAX;
+#endif
+#ifdef _PC_NAME_MAX
+ errno = 0;
+ len = (size_t)pathconf(*filename == '/' ? "/" : ".", _PC_NAME_MAX);
+ if (errno) {
+ perror(argv0);
+ exit(1);
+ }
+ if (maxlen > len)
+ maxlen = len;
+ sysmaxlen = maxlen;
+#endif
+ for (p = filename; p; p = q) {
+ q = strchr(p, '/');
+ len = q ? (size_t)(q++ - p) : strlen(p);
+ if (len > maxlen) {
+ fprintf(stderr, "%s: %s: includes component longer than %zu bytes\n",
+ argv0, filename, maxlen);
+ return 1;
+ }
+#ifdef _PC_NAME_MAX
+ if (q) {
+ *q = 0;
+ errno = 0;
+ len = (size_t)pathconf(filename, _PC_NAME_MAX);
+ if (errno) {
+ perror(argv0);
+ exit(1);
+ }
+ maxlen = sysmaxlen < len ? sysmaxlen : len;
+ *q = '/';
+ }
+#endif
+ }
+
+ return 0;
+}
+
+int
+main(int argc, char *argv[])
+{
+ int ret = 0;
+
+ ARGBEGIN {
+ case 'p':
+ most = 1;
+ break;
+ case 'P':
+ extra = 1;
+ break;
+ default:
+ usage();
+ } ARGEND;
+
+ if (!argc)
+ usage();
+
+ for (; argc--; argv++)
+ ret |= pathchk(*argv);
+
+ return 0;
+}
--
2.7.0
Received on Wed Feb 03 2016 - 11:12:01 CET
This archive was generated by hypermail 2.3.0 : Wed Feb 03 2016 - 11:24:11 CET