Bug: cgi gateway: new

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+* Status: [[!taglink open]]          <!-- Choose one:         open, closed -->
+* Assigned to: [[!taglink jblake]] <!-- Choose one or more: jrayhawk, jblake -->
+* Priority: [[!taglink now]]         <!-- Choose one:         now, soon, later -->
+* Opened by: jrayhawk
+
+### Discussion
+
+In order for CGIs to work with the current paradigm, we'd need some mechanism
+for Apache to execute the various pinyadmin scripts as the involved user. We can
+either do this using sudo, which would require a lot of overhead in making and
+maintaining sudoers rules, or using an suid binary that does exactly what we
+need.
+
+Requirements:
+
+* executable only by www-data
+* takes as arguments
+  * username
+  * pinyadmin command
+  * pinyadmin command arguments
+* exits if username's uid < 1000
+* exits if username violates piny username constraints (specifically git- and
+  ikiwiki- are not allowed)
+* executes with the appropriate uid/gid the specified pinyadmin command and the
+  specified arguments
+
+Obviously any input on this concept is desirable.