[walletdb] Fix syntax error in key parser #7381

1. 
   MarcoFalke commented at 9:06 am on January 20, 2016: member

   This needs backport to all versions of bitcoin/altcoins after merge.

   A dump may look like:

   0VERSION=3
   1format=bytevalue
   2database=main
   3type=btree
   4db_pagesize=4096
   5HEADER=END
   6<{Data}>
   7DATA=END
   

   So the current parser gives us odd data like:

   keyHex="DATA=END"; valueHex="";

   (sometimes the other way round)

2. [walletdb] Fix syntax error in key parser fa6d4cc095
3. jonasschnelli added the label Wallet on Jan 20, 2016
4. in src/wallet/db.cpp: in fa6d4cc095

   204@@ -205,7 +205,7 @@ bool CDBEnv::Salvage(const std::string& strFile, bool fAggressive, std::vector<C
   205     std::string keyHex, valueHex;
   206     while (!strDump.eof() && keyHex != "DATA=END") {
   207         getline(strDump, keyHex);
   208-        if (keyHex != "DATA_END") {
   209+        if (keyHex != "DATA=END") {
   

   ---

   ---

   

   laanwj commented at 9:49 am on January 20, 2016:

   Where does this value come from? If from berkeleydb itself: Is it documented, or available as some kind of constant?

   ---

   

   MarcoFalke commented at 9:56 am on January 20, 2016:

   db_dump ~/.bitcoin/regtest/wallet.dat

   https://docs.oracle.com/cd/E17275_01/html/api_reference/C/db_dump.html

   http://web.deu.edu.tr/doc/berkeley/berkeleyDB/ref/dumpload/format.html

   ---

   

   dcousens commented at 9:05 pm on January 20, 2016:

   We could probably make it a constant for our sakes anyway.
5. 
   laanwj commented at 10:49 am on January 20, 2016: member

   Fixes #7379 I suppose?
6. 
   laanwj commented at 10:53 am on January 20, 2016: member

   utACK
7. laanwj added the label Bug on Jan 20, 2016
8. laanwj added the label Priority High on Jan 20, 2016
9. laanwj added this to the milestone 0.12.0 on Jan 20, 2016
10. laanwj merged this on Jan 20, 2016
11. laanwj closed this on Jan 20, 2016

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12. laanwj referenced this in commit 545c5f920e on Jan 20, 2016
13. laanwj referenced this in commit 621bbd88ba on Jan 20, 2016
14. MarcoFalke deleted the branch on Jan 20, 2016
15. laanwj referenced this in commit c40ec14210 on Jan 20, 2016
16. laanwj referenced this in commit b0c97ce31a on Jan 20, 2016
17. 
    MarcoFalke commented at 12:10 pm on January 20, 2016: member

    Fixes #7379 I suppose?

    There are other issues with salvagewallet, so I can’t guarantee that.

18. 
    laanwj commented at 12:13 pm on January 20, 2016: member

    • Backported to 0.12 as 621bbd88baf7e8f50a015905070e19f71a53f8b9
    • Backported to 0.11 as c40ec1421048e7ddb9eb1878e4c65ff27aa066c8
    • Backported to 0.10 as b0c97ce31a93caa0037c67a0dc133b8873911070
19. 
    laanwj commented at 12:22 pm on January 20, 2016: member

    There are other issues with salvagewallet, so I can’t guarantee that.

    Right, I meant the specific problem. It’s never possible to guarantee that you’ve solved all bugs. If only…

20. 
    jonasschnelli commented at 12:30 pm on January 20, 2016: contributor

    Nice catch! Thanks for fixing. Post merge ACK.
21. dexX7 referenced this in commit e9f4ff787b on Apr 24, 2016
22. reddink referenced this in commit 797cb84bd2 on May 27, 2020
23. DrahtBot locked this on Sep 8, 2021

Contributors
MarcoFalke laanwj dcousens jonasschnelli

Labels
Bug Wallet

Milestone
0.12.0