Bugs item #566835, was opened at 2002-06-10 06:33
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Category: libcurl
Group: crash
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Daniel Stenberg (bagder)
Summary: strlen() with NULL ptr on Solaris

Initial Comment:
We had problems running cURL 7.9.6 on Solaris due
to a call to the standard library function strlen()
with a NULL pointer. This would cause a crash.
This happened on Solaris versions 7 and 8.

To fix the problem we wrote a new strlen() and
provided a curl cover function and a macro that
would replace calls to strlen() in the code.

The new file strlen.h has the declaration:

        size_t curl_strlen(const char *s);
        #define strlen(a) curl_strlen(a)

The file strlen.c contains the implementation:

        #include "setup.h"
        #include <string.h>
        #include <ctype.h>

        size_t curl_strlen(const char *s)
        {
                int len = 0;
                if (0 != s)
                        len = strlen(s);
                return len;
        }

We included strlen.h in the following files:
        base64.c
        connect.c
        cookie.c
        escape.c
        formdata.c
        ftp.c
        getdate.c
        getpass.c
        hostip.c
        http.c
        krb4.c
        memdebug.c
        mprintf.c
        netrc.c
        security.c
        sendf.c
        ssluse.c
        strequal.c
        telnet.c
        transfer.c
        url.c
        version.c

Finally, we included strlen.c and strlen.h in
Makefile.am where appropriate.

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Received on 2002-06-10