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18

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0
Q: 

Need regex help with 2 URL rewrite cases (for SQUID server using SQUIRM)

case 1:

IN: example.com?p1=val1&p2=val2&p3=val3
OUT: example2.com?p1=val1&p2=val2&p3=val3&p4=val4

-- p4=val4 was added to the end, the rest of the parameters were preserved

case 2:

IN: example.com?p1=val1&p4=badvalue
OUT: example2.com?p1=val1&p4=goodvalue

-- the value of p4 was changed, so we need to scan for the existence of the parameter p4 and change its value to a constant ("goodvalue")

This isn't for Apache .. it's for the SQUIRM rewrite_program called by Squid 2.6. Just need the pure regex ... thank you

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