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Avoid a possible crash in tls_log_errors.

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We were checking for msg==NULL, but not lib or proc.  This case can
only occur if we have an error whose string we somehow haven't loaded,
but it's worth coding defensively here.

Spotted by rieo on IRC.
This commit is contained in:
Nick Mathewson 2010-01-22 16:32:15 -05:00
parent 1fc94bfd0e
commit 4ad5094c90
1 changed files with 2 additions and 0 deletions
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2
src/common/tortls.c
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@ -180,6 +180,8 @@ tls_log_errors(tor_tls_t *tls, int severity, const char *doing)
lib = (const char*)ERR_lib_error_string(err);
func = (const char*)ERR_func_error_string(err);
if (!msg) msg = "(null)";
if (!lib) lib = "(null)";
if (!func) func = "(null)";
if (doing) {
log(severity, LD_NET, "TLS error while %s%s%s: %s (in %s:%s)",
doing, addr?" with ":"", addr?addr:"",