[Serusers] overflowing Expire values

Hi! I gave 3.1.2.4 of draft-ietf-sipping-torture-tests-07 a try and sent - a REGISTER with Expires > 2^31 and lower than 2^32 (2147483748 in my case). - a REGISTER with Expires > 2^32 (4294967596 = 2^32 + 300) I used print_expires() to print the resulting values SER (0.9.3 + changes) parsed. It's a negative value in first case and 300 in the latter one. parser/parse_expires.h defines exp_body_t to have 'int val' which is not enough to store the parsed values. Changing it to 'unsigned int val' prevents the negative values from coming up in SER but does not solve the main problem. The draft stats that a default value of 3600 seconds should be assumed in case of errors, so an additional check to make sure _e->val will always be below 2^32 is necessary. I do have a small patch for our non-standard branch and could wrap one up for HEAD if needed. Hendrik -- freenet Cityline GmbH, Hamburger Chaussee 2-4, 24114 Kiel, Germany Phone: +49 (0)431 9020552, Fax: +49 (0)431 9020559 Internet: http://www.freenet.de, eMail: hendrik.scholz(a)freenet-ag.de