Places in code with 6 or more lines that are exactly the same.
Intro
- For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
- Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
- You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."
Duplication Overall
- 26% duplication:
- 11,687 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 3,048 duplicated lines
- 424 duplicates
Duplication per Extension
Duplication per Component (primary)
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 100 | x 2 | SecurityExploits/Android/Qualcomm/CVE-2020-11239SecurityExploits/Android/Qualcomm/NPU | 411:543 (30%)7:139 (100%) | view | |
| 67 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 17:116 (12%)17:116 (11%) | view | |
| 65 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 217:298 (12%)224:305 (10%) | view | |
| 52 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 29:112 (12%)12:95 (8%) | view | |
| 49 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 34:112 (12%)17:95 (9%) | view | |
| 43 | x 2 | SecurityExploits/Android/Qualcomm/CVE-2020-11239SecurityExploits/Android/Qualcomm/NPU | 8:66 (13%)17:77 (22%) | view | |
| 42 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 524:574 (7%)490:540 (7%) | view | |
| 34 | x 2 | SecurityExploits/Chrome/.../CVE-2021-30528/aarch64SecurityExploits/Chrome/...cape/CVE-2021-30528/arm | 27:66 (50%)23:61 (56%) | view | |
| 32 | x 2 | SecurityExploits/SANE/ep...heap_exploit_demos/homeSecurityExploits/SANE/ep...heap_exploit_demos/home | 75:121 (28%)74:120 (26%) | view | |
| 25 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 312:346 (12%)53:87 (4%) | view | |
| 25 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 312:346 (12%)70:104 (6%) | view | |
| 25 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 312:346 (12%)53:87 (4%) | view | |
| 23 | x 2 | SecurityExploits/Android/Qualcomm/CVE-2020-11239SecurityExploits/Android/Qualcomm/NPU | 175:209 (3%)52:86 (21%) | view | |
| 21 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 502:522 (3%)467:487 (3%) | view | |
| 20 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 304:333 (3%)312:341 (3%) | view | |
| 19 | x 2 | SecurityExploits/SANE/ep...heap_exploit_demos/homeSecurityExploits/SANE/ep...heap_exploit_demos/home | 22:47 (16%)23:48 (15%) | view | |
| 19 | x 2 | SecurityExploits/SANE/ep...heap_exploit_demos/homeSecurityExploits/SANE/ep...heap_exploit_demos/home | 127:151 (16%)131:155 (15%) | view | |
| 18 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 142:160 (4%)98:116 (3%) | view | |
| 18 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/polkit/...on_bypass_CVE-2021-3560 | 115:140 (4%)31:56 (6%) | view | |
| 18 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 142:160 (4%)98:116 (3%) | view | |
| 18 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/polkit/...on_bypass_CVE-2021-3560 | 115:140 (4%)25:50 (8%) | view | |
| 18 | x 2 | SecurityExploits/Android/Qualcomm/CVE-2020-11239SecurityExploits/Android/Qualcomm/NPU | 270:300 (2%)149:179 (17%) | view | |
| 18 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 335:368 (3%)343:376 (3%) | view | |
| 18 | x 2 | SecurityExploits/polkit/...on_bypass_CVE-2021-3560SecurityExploits/polkit/...on_bypass_CVE-2021-3560 | 31:56 (6%)25:50 (8%) | view | |
| 17 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 249:274 (4%)143:168 (3%) | view | |
| 14 | x 2 | SecurityExploits/Android/Qualcomm/NPUSecurityExploits/Android/Qualcomm/NPU | 242:257 (4%)274:289 (4%) | view | |
| 13 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 583:598 (3%)840:855 (2%) | view | |
| 13 | x 2 | SecurityExploits/Chrome/...cape/CVE-2021-30528/armSecurityExploits/Chrome/...boxEscape/GHSL-2020-165 | 39:54 (21%)49:63 (7%) | view | |
| 13 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 625:641 (3%)829:845 (2%) | view | |
| 13 | x 2 | SecurityExploits/Chrome/v8/CVE-2021-30632SecurityExploits/Chrome/v8/CVE-2021-37975 | 50:68 (17%)105:123 (6%) | view | |
| 13 | x 2 | SecurityExploits/Chrome/.../CVE-2021-30528/aarch64SecurityExploits/Chrome/...boxEscape/GHSL-2020-165 | 43:58 (19%)49:63 (7%) | view | |
| 13 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307 | 51:65 (43%)59:73 (39%) | view | |
| 12 | x 2 | SecurityExploits/Chrome/v8/CVE-2021-37975SecurityExploits/Chrome/v8/CVE-2021-37975 | 104:115 (3%)67:78 (5%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 1037:1055 (1%)1276:1294 (1%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 736:752 (1%)757:770 (1%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 736:752 (1%)802:815 (1%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 583:596 (2%)780:793 (2%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307 | 423:443 (2%)459:479 (2%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 757:770 (1%)819:832 (1%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 736:752 (1%)819:832 (1%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 125:143 (11%)22:40 (2%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 322:339 (1%)388:405 (1%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 125:143 (11%)39:57 (2%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 125:143 (11%)22:40 (2%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 592:609 (2%)739:756 (2%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 822:835 (1%)1114:1128 (1%) | view | |
| 12 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 780:793 (2%)840:853 (2%) | view | |
| 12 | x 2 | SecurityExploits/Chrome/...oxEscape/CVE-2021-30528SecurityExploits/Chrome/...boxEscape/GHSL-2020-165 | 7:19 (100%)7:19 (100%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 1026:1038 (1%)1042:1054 (1%) | view | |
| 12 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 802:815 (1%)819:832 (1%) | view |
Duplicated Units
The list of top 7 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 31 | x 4 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...gnore_dom_CVE-2019-7307 | 69:105 52:88 52:88 311:347 | view | |
| 29 | x 2 | SecurityExploits/Android/Qualcomm/NPUSecurityExploits/Android/Qualcomm/CVE-2020-11239 | 52:87 175:210 | view | |
| 20 | x 3 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 142:163 98:119 98:119 | view | |
| 19 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 554:575 520:541 | view | |
| 18 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 532:552 498:518 | view | |
| 9 | x 2 | SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939SecurityExploits/Ubuntu/...tsservice_CVE-2021-3939 | 263:273 157:167 | view | |
| 6 | x 2 | SecurityExploits/SANE/epsonds_CVE-2020-12861SecurityExploits/SANE/epsonds_CVE-2020-12861 | 195:203 600:608 | view |