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The place within the string to replace text with ellipses if there is not enough space to display the whole string. You must set ellipsize-set to TRUE for this property to take effect. The font family name such as Arial or Monospace. You must set family-set to TRUE for this property to take effect. The font description string such as "Monospace Bold 10". You must set font-set to TRUE for this property to take effect. A font description that defines the font for the cell. The foreground color of the cell as a string. You must set foreground-set to TRUE for this property to take effect. The foreground color of the cell. The language of the cell s text as an ISO code. In most cases, you will not need to use this property. You must set language-set to TRUE for this property to take effect. Text that will be rendered by the cell that contains Pango markup. The positive or negative offset of the text. You must set rise-set to TRUE for this property to take effect. The scaling factor for the font as a gdouble value. You must set scale-set to TRUE for this property to take effect. If set to TRUE, all text will be forced into one paragraph. The font size of the text, scaled by a factor of PANGO_UNITS. You must set size-set to TRUE for this property to take effect. The font size of the text in points. A flag that is used to add or remove spacing between text characters. You must set stretch-set to TRUE for this property to take effect.

Requiring authentication and authorization Preventing cross-site scripting attacks Mitigating cross-site request forgeries Avoiding JSON hijacking

To an extent, the work involved in rooting out buffer overflows is somewhat like the year 2000 (Y2K) problem, in which programmers had to go through tons of old code looking for places in which dates were handled, in search of cases in which the dates were assumed to only have two digits. That code needed to be rewritten before the year 2000 occurred to prevent computer systems from interpreting the year 2000 as the year 1900. Such bugs might have plagued many functioning systems that people relied on. In the case of eliminating buffer overflow vulnerabilities, programmers need to go through their code and look for unsafe string handling. Unfortunately, however, there is no hard-and-fast deadline that this needs to be done by! There may be many latent, unexploited buffer overflow vulnerabilities in a code base, and day-by-day, the risk that an attacker might try to take advantage of one of them may increase.

Security is often a vague and amorphous topic in web application development. We rely on the web server to keep our application secure, and we rely on our programming platform. The rest sometimes seems theoretical and rare. In this chapter, we ll describe possible attacks and exactly what to do to prevent them by using two main approaches. The first is traditional management of authentication and authorization. Authentication is ensuring that the user has supplied the proper credentials to access the system. When a user logs in, usually by providing a username and password, he is authenticated. Authorization is making a decision about whether a given user has permission to do something with the system. When a user accesses a resource not available to other users, he has been specifically authorized to do so. The second approach we ll discuss involves common web attack vectors and technical vulnerabilities that allow attackers to bypass authentication or authorization.

If set to TRUE, a single line will be placed through the text. You must set strikethrough-set to TRUE for this property to take effect. The style of the font such as italics or oblique. You must set style-set to TRUE for this property to take effect. The text to display in the cell. The style of underline to place below the text. You must set underline-set to TRUE for this property to take effect. Set to PANGO_VARIANT_SMALL_CAPS to render lower case characters as small upper case characters. You must set variant-set to TRUE for this property to take effect. The font weight. You must set weightset to TRUE for this property to take effect. The width of the cell in characters. If you set this property to -1, GTK+ will calculate the width. The type of wrap to use for the text. By default, this is set to PANGO_WRAP_CHAR. The width at which text will be wrapped. If this property is set to -1, then wrapping will be disabled.

There are several attack vectors, but we ll focus on some common ones: cross-site scripting (XSS), cross-site request forgery (XSRF), and a special cross-site request forgery called JSON hijacking.

If set to TRUE, the toggle button can be activated by the user. Otherwise, the toggle button can only be used to display a setting. If set to TRUE, the toggle button will be set as activated. If set to TRUE, the toggle button is in a state that is neither active nor inactive.