diff options
Diffstat (limited to 'Src/params.c')
| -rw-r--r-- | Src/params.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/Src/params.c b/Src/params.c index 021d341e8..2b0837e03 100644 --- a/Src/params.c +++ b/Src/params.c @@ -1226,6 +1226,26 @@ isident(char *s) if (!*s) /* empty string is definitely not valid */ return 0; + /* This partly duplicates code in itype_end(), but we need to + * distinguish the leading namespace at this point to check the + * correctness of the identifier that follows + */ + if (*s == '.') { + if (idigit(s[1])) + return 0; /* Namespace must not start with a digit */ + /* Reject identifiers beginning with a digit in namespaces. + * Move this out below this block to also reject v.1x form. + */ + if ((ss = itype_end(s + (*s == '.'), IIDENT, 0))) { + if (*ss == '.') { + if (!ss[1]) + return 0; + if (idigit(ss[1])) + s = ss + 1; + } + } + } + if (idigit(*s)) { /* If the first character is `s' is a digit, then all must be */ for (ss = ++s; *ss; ss++) @@ -2148,7 +2168,12 @@ fetchvalue(Value v, char **pptr, int bracks, int flags) pm = (Param) paramtab->getnode2(paramtab, *t == '0' ? "0" : t); else pm = (Param) paramtab->getnode(paramtab, *t == '0' ? "0" : t); - if (sav) + if (!pm && *t == '.' && !isident(t)) { + /* badly formed namespace reference */ + if (sav) + *s = sav; + return NULL; + } else if (sav) *s = sav; *pptr = s; if (!pm || ((pm->node.flags & PM_UNSET) && |