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Full Discussion: Convert ip ranges to CIDR netblock
Top Forums Shell Programming and Scripting Convert ip ranges to CIDR netblock Post 303027795 by azdps on Monday 24th of December 2018 06:45:39 PM
Old 12-24-2018
I'm using OpenBSD that uses awk source coding dating back to 2011. gawk is not in the base install of OpenBSD because of the GNU licensing so it has to be installed as a package. When I run the script iprange2cidr.awk using awk I get a segmentation fault. I'm curious if someone can change the script to avoid the fault. I've isolated the line in the script that causes the fault:

Code:
if (newip < ipEnd) result = range2cidr(newip + 1, ipEnd,result)

If I remove the above listed code, awk will still process a file containing 230k lines of data without a segmentation fault but the output would obviously be wrong. Any suggestions on how this line might be changed to accommodate OpenBSD's awk version?

At the bottom of the OpenBSD awk man page the bug section advises the following:

Quote:
There are no explicit conversions between numbers and strings. To force an expression to be treated as a number add 0 to it; to force it to be treated as a string concatenate "" to it.
The scope rules for variables in functions are a botch; the syntax is worse.
Any suggestions?
 

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LEARN ABOUT OPENSOLARIS

iconv_dhn

iconv_dhn(5)						Standards, Environments, and Macros					      iconv_dhn(5)

NAME

       iconv_dhn - code set conversion tables for DHN (Dom Handlowy Nauki)

DESCRIPTION

       The following code set conversions are supported:

       +--------------------------------------------------------------------+
       |		  Code Set Conversions Supported		    |
       +--------------+--------+--------------+--------+--------------------+
       |    Code      |Symbol  |Target Code   |Symbol  |   Target Output    |
       +--------------+--------+--------------+--------+--------------------+
       |DHN	      |dhn     |ISO 8859-2    |iso2    | ISO Latin 2	    |
       +--------------+--------+--------------+--------+--------------------+
       |DHN	      |dhn     |MS 1250       |win2    | Windows Latin 2    |
       +--------------+--------+--------------+--------+--------------------+
       |DHN	      |dhn     |MS 852	      |dos2    | MS-DOS Latin 2     |
       +--------------+--------+--------------+--------+--------------------+
       |DHN	      |dhn     |Mazovia       |maz     | Mazovia	    |
       +--------------+--------+--------------+--------+--------------------+

CONVERSIONS

       The conversions are performed according to the following tables. All values in the tables are given in octal.

   DHN to ISO 8859-2
       For the conversion of DHN to ISO 8859-2, all characters not in the following table are mapped unchanged.

       +-----------------------------------------------------------------+
       |	       |     Conversions|Performed	 |		 |
       |     DHN       |  ISO 8859-2	|     DHN	 |  ISO 8859-2	 |
       |24-177	       | 40		|222		 |40		 |
       |200	       | 241		|223		 |364		 |
       |201	       | 306		|224		 |366		 |
       |202	       | 312		|225-230	 |40		 |
       |203	       | 243		|231		 |326		 |
       |204	       | 321		|232		 |334		 |
       |205	       | 323		|233-237	 |40		 |
       |206	       | 246		|240		 |341		 |
       |207	       | 254		|241		 |355		 |
       |210	       | 257		|242		 |363		 |
       |211	       | 261		|243		 |372		 |
       |212	       | 346		|244-340	 |40		 |
       |213	       | 352		|341		 |337		 |
       |214	       | 263		|342-365	 |40		 |
       |215	       | 361		|366		 |367		 |
       |216	       | 363		|367		 |40		 |
       |217	       | 266		|370		 |260		 |
       |220	       | 274		|371-376	 |40		 |
       |221	       | 277		|		 |		 |
       +---------------+----------------+----------------+---------------+

   DHN to MS 1250
       For the conversion of DHN to MS 1250, all characters not in the following table are mapped unchanged.

       +-----------------------------------------------------------------+
       |	       |     Conversions|Performed	 |		 |
       |     DHN       |    MS 1250	|     DHN	 |   MS 1250	 |
       |200	       | 245		|233-237	 |40		 |
       |201	       | 306		|240		 |341		 |
       |202	       | 312		|241		 |355		 |
       |203	       | 243		|242		 |363		 |
       |204	       | 321		|243		 |372		 |
       |205	       | 323		|244-251	 |40		 |
       |206	       | 214		|252		 |254		 |
       |207	       | 217		|253-255	 |40		 |
       |210	       | 257		|256		 |253		 |
       |211	       | 271		|257		 |273		 |
       |212	       | 346		|260-340	 |40		 |
       |213	       | 352		|341		 |337		 |
       |214	       | 263		|342-345	 |40		 |
       |215	       | 361		|346		 |265		 |
       |216	       | 363		|347-360	 |40		 |
       |217	       | 234		|361		 |261		 |
       |220	       | 237		|362-365	 |40		 |
       |221	       | 277		|366		 |367		 |
       |222	       | 40		|367		 |40		 |
       |223	       | 364		|370		 |260		 |
       |224	       | 366		|371		 |40		 |
       |225-230        | 40		|372		 |267		 |
       |231	       | 326		|373-376	 |40		 |
       |232	       | 334		|		 |		 |
       +---------------+----------------+----------------+---------------+

   DHN to MS 852
       For the conversion of DHN to MS 852, all characters not in the following table are mapped unchanged.

       +-----------------------------------------------------------------+
       |	       |     Conversions|Performed	 |		 |
       |     DHN       |    MS 852	|     DHN	 |    MS 852	 |
       |200	       | 244		|212		 |206		 |
       |201	       | 217		|213		 |251		 |
       |202	       | 250		|214		 |210		 |
       |203	       | 235		|215		 |344		 |
       |204	       | 343		|216		 |242		 |
       |205	       | 340		|217		 |230		 |
       |206	       | 227		|220		 |253		 |
       |207	       | 215		|221		 |276		 |
       |210	       | 275		|222-375	 |40		 |
       |211	       | 245		|		 |		 |
       +---------------+----------------+----------------+---------------+

   DHN to Mazovia
       For the conversion of DHN to Mazovia, all characters not in the following table are mapped unchanged.

       +-----------------------------------------------------------------+
       |	       |     Conversions|Performed	 |		 |
       |     DHN       |    Mazovia	|     DHN	 |   Mazovia	 |
       |200	       | 217		|212		 |215		 |
       |201	       | 225		|213		 |221		 |
       |202	       | 220		|214		 |222		 |
       |203	       | 234		|215		 |244		 |
       |204	       | 245		|216		 |242		 |
       |205	       | 243		|217		 |236		 |
       |206	       | 230		|220		 |246		 |
       |207	       | 240		|221		 |247		 |
       |210	       | 241		|222-247	 |40		 |
       |211	       | 206		|		 |		 |
       +---------------+----------------+----------------+---------------+

FILES

       /usr/lib/iconv/*.so	       conversion modules

       /usr/lib/iconv/*.t	       conversion tables

       /usr/lib/iconv/iconv_data       list of conversions supported by conversion tables

SEE ALSO

       iconv(1), iconv(3C), iconv(5)

SunOS 5.10							    18 Apr 1997 						      iconv_dhn(5)
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