On Wed, Jun 20, 2012 at 4:35 PM, <oh...@cox.net> wrote: > Hi, > > I am working on a module, and I get one of the SSL envvars, SSL_CLIENT_CERT, > using apr_table_get() into a const char *. > > The client cert char string returned has the extra beginning line (-----BEGIN > CERTIFICATE-----) and ending line (-----END CERTIFICATE-----), but I need to > remove both of those lines for a call that I need to make. > > I have to admit, I'm a bit (a lot) rusty with 'C', and I guess I could do > something like: > > strpy(original_cert, original_cert+27); > > and then set the ending position to \0 (to terminate the char string early), > but since with this is a module, and I'm working with a pointer to the memory > pool, I'm kind of worried that doing stuff like that would mess things up > (e.g., garbage collection, since the string is now shorter by 'x' bytes. > > So, from an Apache module development standpoint, what would be the safest > way to do this (strip a string of chars from the beginning and end)?
Make a copy with apr_strdup(), then mutate the copy. APR has utility functions for manipulating strings, like apr_strtok(). Have a look at apr_strings.h.
