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Posted to dev@avro.apache.org by "Douglas Creager (Updated) (JIRA)" <ji...@apache.org> on 2011/12/20 03:47:30 UTC
[jira] [Updated] (AVRO-980) C: avro_schema_from_json ignores length
parameter
[ https://issues.apache.org/jira/browse/AVRO-980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Douglas Creager updated AVRO-980:
---------------------------------
Attachment: 0001-AVRO-980.-C-Handle-length-parameter-in-avro_schema_f.patch
Here's a patch for this. Luckily we upgraded our internal copy of Jansson to 2.1 awhile back — it has a json_loadb function, which takes in a length parameter. (Before, we used json_loads, which assumed a NUL-terminated string.)
One thing we might need to consider is that this might break existing code, if they were passing in incorrect (or dummy) values for the length parameter.
> C: avro_schema_from_json ignores length parameter
> --------------------------------------------------
>
> Key: AVRO-980
> URL: https://issues.apache.org/jira/browse/AVRO-980
> Project: Avro
> Issue Type: Bug
> Components: c
> Affects Versions: 1.6.1
> Environment: Linux x86_64 (Ubuntu 11.10)
> Avro 1.6.1
> GCC 4.6.1
> cmake 2.8.5
> Reporter: Michael Cooper
> Priority: Minor
> Labels: c, schema
> Attachments: 0001-AVRO-980.-C-Handle-length-parameter-in-avro_schema_f.patch
>
>
> The function avro_schema_from_json() takes in a const char* and a length parameter, but it appears that the length parameter is ignored.
> We have a project where the schema is a binary resource compiled into the executable, and is not guaranteed to have a null terminator at the end.
> This did not appear to be an issue because the function had a length parameter.
> The other day, It kept throwing errors about characters that were not in the file at all.
> Suspecting it was running off the end of the file, I had a look at the Avro-C code and found that even though the function takes in a length parameter, it does not use it and expects a null terminator.
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