Bug 58410
| Summary: | /bin/ipcalc input bugs | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Steve Bonneville <sbonnevi> |
| Component: | initscripts | Assignee: | Bill Nottingham <notting> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brock Organ <borgan> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.2 | CC: | rvokal |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2002-01-24 06:58:59 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Fixed in 6.63-1. |
Three related input parsing bugs with /bin/ipcalc: 1) CIDR short-form. If a user attempts to use ipcalc by specifying a network/prefix pair (i.e., 10/8) rather than ip-address/prefix (i.e. 10.0.0.0/8), strange results may occur. network (-n) broadcast (-b) 172.0.0.0/8 172.0.0.0 172.255.255.255 (CORRECT) 172/8 0.0.0.0 0.255.255.255 (INCORRECT) 172.16.0.0/16 172.16.0.0 172.16.255.255 (CORRECT) 172.16/16 172.0.0.0 172.0.255.255 (INCORRECT) 172.16.10.0/24 172.16.10.0 172.16.10.255 (CORRECT) 172.16.10/24 172.16.0.0 172.16.0.255 (INCORRECT) Either ipcalc should compute addresses in network/prefix correctly, or it should reject input in that form. 2) Input checking: CIDR prefix *and* netmask! Only the -m option complains if a user attempts to give both a CIDR prefix *and* a subnet mask on the command line. If the input is so perverse that they *differ*, the subnet mask takes precedence. # ipcalc -n 172.16.1.0/24 255.255.0.0 NETWORK=172.16.0.0 # ipcalc -b 172.16.1.0/24 255.255.0.0 BROADCAST=172.16.255.255 # ipcalc -p 172.16.1.0/24 255.255.0.0 PREFIX=16 This input should be rejected outright. 3) (cosmetic bug) ipcalc <IPaddress>/<prefix> silence. If ipcalc is given an ip-address/prefix but no options, nothing happens. If it's given an ip-address and netmask but no options, the usage message is output. The usage message should be output in both circumstances.