diff options
Diffstat (limited to 'Src/exec.c')
| -rw-r--r-- | Src/exec.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/Src/exec.c b/Src/exec.c index a01a633db..ad80dd059 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -806,14 +806,13 @@ findcmd(char *arg0, int docopy, int default_path) cn = hashcmd(arg0, path); if ((int) strlen(arg0) > PATH_MAX) return NULL; - for (s = arg0; *s; s++) - if (*s == '/') { - RET_IF_COM(arg0); - if (arg0 == s || unset(PATHDIRS)) { - return NULL; - } - break; + if ((s = strchr(arg0, '/'))) { + RET_IF_COM(arg0); + if (arg0 == s || unset(PATHDIRS) || !strncmp(arg0, "./", 2) || + !strncmp(arg0, "../", 3)) { + return NULL; } + } if (cn) { char nn[PATH_MAX]; @@ -848,6 +847,11 @@ findcmd(char *arg0, int docopy, int default_path) return NULL; } +/* + * Return TRUE if the given path denotes an executable regular file, or a + * symlink to one. + */ + /**/ int iscom(char *s) @@ -877,6 +881,11 @@ isreallycom(Cmdnam cn) return iscom(fullnam); } +/* + * Return TRUE if the given path contains a dot or dot-dot component + * and does not start with a slash. + */ + /**/ int isrelative(char *s) |