Sometimes filter-condition doesn't work.

[ipsecc]

Description

filter-condition has a bug, sometimes it doesn't work.

Scan target

└─# cat targets.txt 
lookup.api.bsb.baidu.com
openapi.baidu.com

Both expressions worked

└─# ./httpx -l targets.txt -fdc "contains(webserver,'Apache')||contains(title,'Welcome to nginx')"

    __    __  __       _  __
   / /_  / /_/ /_____ | |/ /
  / __ \/ __/ __/ __ \|   /
 / / / / /_/ /_/ /_/ /   |
/_/ /_/\__/\__/ .___/_/|_|
             /_/

                projectdiscovery.io

[INF] Current httpx version v1.3.7 (latest)
                                           

After reverse the expression, contains(webserver,'Apache') no longer works

└─# ./httpx -l targets.txt -fdc "contains(title,'Welcome to nginx')||contains(webserver,'Apache')"     

    __    __  __       _  __
   / /_  / /_/ /_____ | |/ /
  / __ \/ __/ __/ __ \|   /
 / / / / /_/ /_/ /_/ /   |
/_/ /_/\__/\__/ .___/_/|_|
             /_/

                projectdiscovery.io

[INF] Current httpx version v1.3.7 (latest)
https://openapi.baidu.com
                            

[RamanaReddy0M]

@ipsecc It fails due to a dsl evaluation error.
you can enable dsl error logs by exporting SHOW_DSL_ERRORS env.

✗ export SHOW_DSL_ERRORS=true
✗ ./httpx -l targets.txt -fdc "contains(title,'Welcome to nginx')||contains(webserver,'Apache')"

    __    __  __       _  __
   / /_  / /_/ /_____ | |/ /
  / __ \/ __/ __/ __ \|   /
 / / / / /_/ /_/ /_/ /   |
/_/ /_/\__/\__/ .___/_/|_|
             /_/

                projectdiscovery.io

[INF] Current httpx version v1.3.7 (latest)
[ERR] Could not evaluate DSL expression: No parameter 'title' found.
https://openapi.baidu.com

Since there's no title for https://openapi.baidu.com, The expression becomes invalid and fails to filter only this target.

In the first case, The filter worked because it never got a chance to execute contains(title,'Welcome to nginx') part for this https://openapi.baidu.com target.