Chapter 23Wildcards
Wildcards are very useful sequences of characters that can be used to perform partial matching within database searches. FileMaker includes a few very useful wildcards to match characters, numbers, and even date ranges. However, wildcards present a huge security risk when using user-entered data to find a record, and thus this chapter will explain how to protect your scripts from wildcard-based attacks.
What Wildcards Are Available?
Figure 23-1 is a screenshot from the FileMaker Pro find screen showing the wildcards that are available to you through both PHP and FileMaker Pro.
The most dangerous wildcards to security are the “@” and “*” symbols, which allow guessing within search strings to access records that do not belong ...
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