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BUG/MEDIUM: maps: only try to parse the default value when it's present
Maps returning an IP address (e.g. map_str_ip) support an optional default value which must be parsed. Unfortunately the parsing code does not check for this argument's existence and uncondtionally tries to resolve the argument whenever the output is of type address, resulting in segfaults at parsing time when no such argument is provided. This patch adds the appropriate check. This fix may be backported as far as 1.6.
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@ -143,10 +143,10 @@ int sample_load_map(struct arg *arg, struct sample_conv *conv,
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1, err, file, line))
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return 0;
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/* the maps of type IP have a string as defaultvalue. This
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* string canbe anipv4 or an ipv6, we must convert it.
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/* the maps of type IP support a string as default value. This
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* string can be an ipv4 or an ipv6, we must convert it.
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*/
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if (desc->conv->out_type == SMP_T_ADDR) {
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if (arg[1].type != ARGT_STOP && desc->conv->out_type == SMP_T_ADDR) {
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struct sample_data data;
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if (!map_parse_ip(arg[1].data.str.area, &data)) {
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memprintf(err, "map: cannot parse default ip <%s>.",
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