res_crypto.c: Gracefully handle potential key filename truncation.
Partially resolves #143.
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@ -196,7 +196,14 @@ static struct ast_key *try_load_key(const char *dir, const char *fname, int ifd,
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}
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}
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/* Get actual filename */
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/* Get actual filename */
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snprintf(ffname, sizeof(ffname), "%s/%s", dir, fname);
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n = snprintf(ffname, sizeof(ffname), "%s/%s", dir, fname);
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if (n >= sizeof(ffname)) {
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ast_log(LOG_WARNING,
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"Key filenames can be up to %zu bytes long, but the filename for the"
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" key we are currently trying to load (%s/%s) is %d bytes long.",
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sizeof(ffname) - 1, dir, fname, n);
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return NULL;
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}
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/* Open file */
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/* Open file */
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if (!(f = fopen(ffname, "r"))) {
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if (!(f = fopen(ffname, "r"))) {
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