uac_registrant: compare Contact URI case-insensitively#3263
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We had an issue where the response Contact URI had ";transport=udp" changed to ";transport=UDP". This commit solves the problem by comparing the Contact URI case-insensitively.
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Maybe we can continue and improve this one #2558 ? |
| /* Check for binding */ | ||
| if (contact->uri.len==rec->contact_uri.len && | ||
| strncmp(contact->uri.s,rec->contact_uri.s,contact->uri.len)==0){ | ||
| strncasecmp(contact->uri.s,rec->contact_uri.s,contact->uri.len)==0){ |
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This is not correct because if the username was altered, the URIs are not the same:
sip:alice@AtLanTa.CoM;Transport=udp (different usernames)
sip:ALICE@AtLanTa.CoM;Transport=UDP
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Thanks, what would you think of adding a strncmp_lc_transport that takes a pkg_malloc copy of both strings, turns the ;transport=... into lowercase, then strcmps the copies with lowercased transport, and then frees the copies and returns the result of the strcmp?
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Take a look at compare_uris() from parse_uri.c.
It does the proper job if URIs are passed as parsed structures, but comparing raw URIs is bad :(
I pushed some fixes on the compare_uris branch:
https://github.com/OpenSIPS/opensips/tree/compare_uris
Please give it a try and let me know the results.
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Thank you for the work on this, yes this looks good to me!
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Did you test the new branch in production and it's working ok for you?
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Not in production, no, only in a test setup. I registered a user with incorrect case in the transport param and it worked & did not cause any obvious issues.
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Any updates here? No progress has been made in the last 30 days, marking as stale. |
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No updates here. |
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Any updates here? No progress has been made in the last 30 days, marking as stale. |
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No updates here. |
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No updates here.
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Oh! Great success, thank you! |
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Hi @ovidiusas @bogdan-iancu - how come this change didn't make it into 3.4.4? |
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Reopening for visibility. |
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Any updates here? No progress has been made in the last 30 days, marking as stale. |
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It was merged but not included in the release? |
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Any updates here? No progress has been made in the last 30 days, marking as stale. |
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As per #3263 (comment) - a fix was merged but didn't make it into the release, what is happening there? |
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Any updates here? No progress has been made in the last 30 days, marking as stale. |
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Per https://www.opensips.org/pub/opensips/3.5.0-beta/ChangeLog it looks like this is going to make it into a release, closing. |
3 participants
Summary
We had an issue where the response Contact URI had ";transport=udp" changed to ";transport=UDP".
Details
The unequal casing of "UDP" meant that
uac_registrantdid not recognise the Contact header, and therefore ignored the;expires=...value on the header, leading to OpenSIPS failing to re-register the user at the correct interval.Solution
This commit solves the problem by comparing the Contact URI case-insensitively.
Compatibility
I doubt this breaks any scenarios.
Closing issues