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#Post#: 79-------------------------------------------------- |
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This is very bad |
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By: asim roy Date: September 16, 2023, 4:57 am |
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Let's see if it works First Message We should see the following |
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in the console output The agile brown fox jumped over the lazy |
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dog. success! But wait. Since we know there is a terminator at |
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the end of the first message and the terminator marks where the |
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string ends why isn't the output simply Empower your team. Lead |
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the industry. Subscribe to a library of online courses and |
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digital learning tools for your organization via . This is |
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thanks to the magic of functions. This function is specifically |
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designed to handle terminating strings taking into account the |
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fact that multiple strings each have their own terminating |
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character. |
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So when it puts in a new source string it automatically removes |
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the terminator from the target. How convenient! Safe but there's |
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a problem. Functions work great when Phone Number List |
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https://b2bphonelist.com/ |
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the programmer does everything |
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correctly but what happens when there are multiple people on the |
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project and someone mistakenly decides to do the following test |
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test At first glance you may not notice any issues . But notice |
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how much space we allocated for . Since is being calculated for |
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us we will have a total of characters in memory to work with |
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including the terminator. But the news after the merger will be |
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bigger! This is a simple example of a very common problem in |
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languages buffer overflows. |
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[img] |
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https://github.com/mdsakib0012/image/blob/main/phone%20number.png?raw=true[/img] |
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https://b2bphonelist.com/ |
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On modern computers this can cause a crash in the worst case |
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scenario. But on less secure systems this could result in |
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overwriting memory that doesn't belong to your application! |
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and in fact has been the case for many security breaches in the |
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past. Realizing that this was a real problem the standards |
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committee added an updated function to the standard library The |
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function works exactly like except that it has an extra |
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parameter representing the number of characters to copy. |
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![https://github.com/mdsakib0012/image/blob/main/phone%20number.png?raw=true[/img]](https://github.com/mdsakib0012/image/blob/main/phone%20number.png?raw=true[/img]){kind=link}