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Minor cleanup for pathchk(1)

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sin 2016-02-11 10:00:00 +00:00
parent b445614f70
commit efabd56535
1 changed files with 15 additions and 24 deletions
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35
pathchk.c
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@ -8,28 +8,13 @@
#include <sys/stat.h> #include <sys/stat.h>
#include "util.h" #include "util.h"
#include "arg.h"
#define PORTABLE_CHARACTER_SET "0123456789._-qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM" #define PORTABLE_CHARACTER_SET "0123456789._-qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM"
/* If your system supports more other characters, but not all non-NUL characters, define SYSTEM_CHARACTER_SET. */ /* If your system supports more other characters, but not all non-NUL characters, define SYSTEM_CHARACTER_SET. */
#ifndef PATH_MAX
# define PATH_MAX SIZE_MAX
#endif
#ifndef NAME_MAX
# define NAME_MAX SIZE_MAX
#endif
static int most = 0; static int most = 0;
static int extra = 0; static int extra = 0;
static void
usage(void)
{
fprintf(stderr, "usage: %s [-pP] filename...\n", argv0);
exit(1);
}
static int static int
pathchk(char *filename) pathchk(char *filename)
{ {
@ -40,13 +25,13 @@ pathchk(char *filename)
/* Empty? */ /* Empty? */
if (extra && !*filename) { if (extra && !*filename) {
fprintf(stderr, "%s: empty filename\n", argv0); weprintf("%s: empty filename\n", argv0);
return 1; return 1;
} }
/* Leading hyphen? */ /* Leading hyphen? */
if (extra && ((*filename == '-') || strstr(filename, "/-"))) { if (extra && ((*filename == '-') || strstr(filename, "/-"))) {
fprintf(stderr, "%s: %s: leading '-' in component of filename\n", argv0, filename); weprintf("%s: %s: leading '-' in component of filename\n", argv0, filename);
return 1; return 1;
} }
@ -60,9 +45,9 @@ pathchk(char *filename)
character_set = "/"PORTABLE_CHARACTER_SET; character_set = "/"PORTABLE_CHARACTER_SET;
if (character_set && *(invalid = filename + strspn(filename, character_set))) { if (character_set && *(invalid = filename + strspn(filename, character_set))) {
for (invalid_end = invalid + 1; *invalid_end & 0x80; invalid_end++); for (invalid_end = invalid + 1; *invalid_end & 0x80; invalid_end++);
fprintf(stderr, "%s: %s: ", argv0, filename); weprintf("%s: %s: ", argv0, filename);
*invalid_end = 0; *invalid_end = 0;
fprintf(stderr, "nonportable character '%s'\n", invalid); weprintf("nonportable character '%s'\n", invalid);
return 1; return 1;
} }
@ -70,14 +55,14 @@ pathchk(char *filename)
if (lstat(filename, &_attr) && errno != ENOENT) { if (lstat(filename, &_attr) && errno != ENOENT) {
/* lstat rather than stat, so that if filename is a bad symlink, but /* lstat rather than stat, so that if filename is a bad symlink, but
* all parents are OK, no error will be detected. */ * all parents are OK, no error will be detected. */
fprintf(stderr, "%s: %s: %s\n", argv0, filename, strerror(errno)); weprintf("%s: %s:", argv0, filename);
return 1; return 1;
} }
/* Too long pathname? */ /* Too long pathname? */
maxlen = most ? _POSIX_PATH_MAX : PATH_MAX; maxlen = most ? _POSIX_PATH_MAX : PATH_MAX;
if (strlen(filename) >= maxlen) { if (strlen(filename) >= maxlen) {
fprintf(stderr, "%s: %s: is longer than %zu bytes\n", weprintf("%s: %s: is longer than %zu bytes\n",
argv0, filename, maxlen); argv0, filename, maxlen);
return 1; return 1;
} }
@ -88,7 +73,7 @@ pathchk(char *filename)
q = strchr(p, '/'); q = strchr(p, '/');
len = q ? (size_t)(q++ - p) : strlen(p); len = q ? (size_t)(q++ - p) : strlen(p);
if (len > maxlen) { if (len > maxlen) {
fprintf(stderr, "%s: %s: includes component longer than %zu bytes\n", weprintf("%s: %s: includes component longer than %zu bytes\n",
argv0, filename, maxlen); argv0, filename, maxlen);
return 1; return 1;
} }
@ -97,6 +82,12 @@ pathchk(char *filename)
return 0; return 0;
} }
static void
usage(void)
{
eprintf("usage: %s [-pP] filename...\n", argv0);
}
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {