ldrahnik / isa_project_2017_2018

isa_project_2017_2018's Issues

Vagrant file with CentOS

Create .h file with constants, includes and prototypes

UDP listening

Return values

Commented return 1, return 0 etc.

RPM - elementary 16.04 failed dependencies #bug #extension

ufdio:       1 reads,    15439 total bytes in 0.000011 secs
rpm: RPM should not be used directly install RPM packages, use Alien instead!
rpm: However assuming you know what you are doing...
D: ============== /home/ldrahnik/rpmbuild/RPMS/x86_64/testovac-0.1-0.x86_64.rpm
D: loading keyring from pubkeys in /home/ldrahnik/.rpmdb/pubkeys/*.key
D: couldn't find any keys in /home/ldrahnik/.rpmdb/pubkeys/*.key
D: loading keyring from rpmdb
D: opening  db environment /home/ldrahnik/.rpmdb cdb:0x401
D: opening  db index       /home/ldrahnik/.rpmdb/Packages 0x400 mode=0x0
D: locked   db index       /home/ldrahnik/.rpmdb/Packages
D: opening  db index       /home/ldrahnik/.rpmdb/Name 0x400 mode=0x0
D: Expected size:        16926 = lead(96)+sigs(4292)+pad(4)+data(12534)
D:   Actual size:        16926
D: /home/ldrahnik/rpmbuild/RPMS/x86_64/testovac-0.1-0.x86_64.rpm: Header SHA1 digest: OK (67744d2a547aed970a2284dc022fb3e7cc270833)
ufdio:       6 reads,     7676 total bytes in 0.000007 secs
D: 	added binary package [0]
D: found 0 source and 1 binary packages
D: opening  db index       /home/ldrahnik/.rpmdb/Conflictname 0x400 mode=0x0
D: opening  db index       /home/ldrahnik/.rpmdb/Requirename 0x400 mode=0x0
D: ========== +++ testovac-0.1-0 x86_64/linux 0x2
D: opening  db index       /home/ldrahnik/.rpmdb/Providename 0x400 mode=0x0
D:  Requires: libc.so.6()(64bit)                            NO  
D:  Requires: libc.so.6(GLIBC_2.2.5)(64bit)                 NO  
D:  Requires: libc.so.6(GLIBC_2.4)(64bit)                   NO  
D:  Requires: libstdc++.so.6()(64bit)                       NO  
D:  Requires: libstdc++.so.6(GLIBCXX_3.4)(64bit)            NO  
D:  Requires: rpmlib(CompressedFileNames) <= 3.0.4-1        YES (rpmlib provides)
D:  Requires: rpmlib(PayloadFilesHavePrefix) <= 4.0-1       YES (rpmlib provides)
D:  Requires: rtld(GNU_HASH)                                NO  
D: opening  db index       /home/ldrahnik/.rpmdb/Obsoletename 0x400 mode=0x0
error: Failed dependencies:
	libc.so.6()(64bit) is needed by testovac-0.1-0.x86_64
	libc.so.6(GLIBC_2.2.5)(64bit) is needed by testovac-0.1-0.x86_64
	libc.so.6(GLIBC_2.4)(64bit) is needed by testovac-0.1-0.x86_64
	libstdc++.so.6()(64bit) is needed by testovac-0.1-0.x86_64
	libstdc++.so.6(GLIBCXX_3.4)(64bit) is needed by testovac-0.1-0.x86_64
	rtld(GNU_HASH) is needed by testovac-0.1-0.x86_64
D: closed   db index       /home/ldrahnik/.rpmdb/Packages
D: closed   db index       /home/ldrahnik/.rpmdb/Obsoletename
D: closed   db index       /home/ldrahnik/.rpmdb/Conflictname
D: closed   db index       /home/ldrahnik/.rpmdb/Providename
D: closed   db index       /home/ldrahnik/.rpmdb/Requirename
D: closed   db index       /home/ldrahnik/.rpmdb/Name
D: closed   db environment /home/ldrahnik/.rpmdb

Time managment

Asd vagrantfile with folder_sharing to project

by default is sharing folder ., its enough

Code style

if( ... without space
indent ..... 2 space

Kvalita

Testování

Assesment issues

bad nanoseconds/microseconds conversion in printf
bad nanoseconds/microseconds conversion in waiting interval
rpm program requirements(Requires: libc libm libpthread libstdc++)
rpm man page add compression to build process
rpm no local location and replace man page under share structure

Documentation

• IPv4 ICMP/UDP
• IPv6 ICMP/UDP
• Extension RPM (https://gist.github.com/ldrahnik/c01dfbdcda33cb104a8de5d0d920946d)
• Extension RTT (popsat prioritu u RTT u node + retezec se musi uvadet v uvozovkach nebo escapovat)
• RTT mdev
• Vagrant (soubor nakopirovany do rootu projektu, protoze by default se sdili slozka kde se spusti do slozky /vagrant/)
• Reference (https://books.google.cz/books?id=yqHVAwAAQBAJ&pg=PA67&lpg=PA67&dq=udp+packet+timeval&source=bl&ots=r1HA_rmHBy&sig=i7uYaoV9dB0vOBYB-zsU6zXVmis&hl=en&sa=X&ved=0ahUKEwjRmcL0x7zXAhWSFOwKHYCpCKEQ6AEISzAG#v=onepage&q=traceroute&f=false)
• Udp server (IPV6 umi naslouchat i ipv4 https://stackoverflow.com/questions/1618240/how-to-support-both-ipv4-and-ipv6-connections)
• AF vs PF - https://stackoverflow.com/questions/6729366/what-is-the-difference-between-af-inet-and-pf-inet-in-socket-programming

Ipv4 - timestamp (when was stamped by kernel) #refactoring

Problem was with first negative number.

Restrictions with ioctl -> only Linux

UDP IPv6

Replace summary & report info to function

UDP IPv4

• checksum
• receive response

Ipv6 - timestamp (when was stamped by kernel) #refactoring

Restrictions with ioctl -> only Linux