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Bug #757 strpos is not binary save
Submitted: 1998-09-18 10:46 UTC Modified: 1998-09-18 11:05 UTC
From: thies at digicol dot de Assigned:
Status: Closed Package: Other
PHP Version: 3.0 Latest CVS OS: all
Private report: No CVE-ID: None
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From: thies at digicol dot de
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 [1998-09-18 10:46 UTC] thies at digicol dot de
line 520:
    if (needle->type == IS_STRING) {
        if (strlen(needle->value.str.val)==0) {
            php3_error(E_WARNING,"Empty delimiter");
        found = strstr(haystack->value.str.val, needle->value.str.val);

stig told me, that php strings should be binary safe, i believe that the strlen in the strpos-function is not.

i believe it sould read:

if (needle->value.str.lenl==0) {



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 [1998-09-18 11:05 UTC] zeev

strpos() as it is right now is not binary safe, and
that check is intentional, to protect the binary
unsafe implementation from receiving unexpected
arguments (and thus crash).
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