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output: make mustach processing more robust

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Fix issues found with afl-fuzz.  It is a pity I had to change mustach.c it
is no longer exactly the same as upstream.  Lets see if Jose will accept
these changes.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This commit is contained in:
Sami Kerola 2017-11-09 18:51:29 +00:00
parent 2ec953858b
commit 66183bc7c7
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GPG key ID: A9553245FDE9B739
1 changed files with 3 additions and 1 deletions
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4
src/mustach.c
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@ -38,7 +38,7 @@ static int getpartial(struct mustach_itf *itf, void *closure, const char *name,
*result = NULL;
file = open_memstream(result, &size);
if (file == NULL)
if (itf->put == NULL || file == NULL)
rc = MUSTACH_ERROR_SYSTEM;
else {
rc = itf->put(closure, name, 0, file);
@ -192,6 +192,8 @@ static int process(const char *template, struct mustach_itf *itf, void *closure,
default:
/* replacement */
if (emit) {
if (itf->put == NULL)
return MUSTACH_ERROR_SYSTEM;
rc = itf->put(closure, name, c != '&', file);
if (rc < 0)
return rc;