Questions tagged [permissions]

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3
votes
1answer
452 views

Is it possible to call “updateauth” to change account keys from within a smart contract?

I am trying to write a smart contract that changes the keys of an account (not itself). The transaction will be of course be authorized by the account for which the keys are changing. I feel like it ...
1
vote
0answers
99 views

Why eosio.msig must be privileged account in boot sequence?

I understand the process that eosio's permissions are changed to eosio.prods which represents all BPs. But I cannot understand why we need to make eosio.msig a privileged account. Could you explain ...
3
votes
3answers
132 views

How does one prevent smart contracts from taking all your tokens, when you give them your auth?

Suppose you are a malicious smart contract developer and embedded an inline transaction in your smart contract that calls eosio.token::transfer 100 eos from the caller's account to your account. An ...
3
votes
1answer
700 views

How to get accounts info in smart contract

How can I get accounts info in a smart contract? Or if given a public key and account_name, is there any way can verify that account has this public key in a certain permission?
2
votes
2answers
753 views

How to call action of another contract within a contract?

If I'm right then to call the event of another contract, I need to configure the permissions (allow the call). For example, I have contract aliceclass: class aliceclass : public contract { public: ...
0
votes
1answer
302 views

How to link permission to action?

I created a publish permission, and I want to this permission can only execute the publish action in my tweet contract. How to link the permission to the action?
2
votes
2answers
1k views

How to call an action within the contract with custom permissions?

Here is my code: void play(account_name player, asset amount) { require_auth(player); //The part that is throwing the error action { permission_level{player, N(active)}, //Using the ...
2
votes
1answer
107 views

custom permission can't sign contract 309005

Using this permission: increment(){ /* code */ require_auth(permission_level{_self, inc}); } for an account that has the following permissions permissions: owner: EOS... active: EOS.....
5
votes
2answers
381 views

Error 3090003 when calling a contract from another contract

I have deployed contracts hello and callhello, where callhello makes a call to hello, which in turn prints an output. However, i'm not getting the result I'm hoping for cleos push action callhello ...
1
vote
1answer
185 views

Custom permission error 309004/309005

I'm trying to create a custom permission and push an action on my contract, but experience problems with authorization. Alice.acc is the account where the contract is set to. Giveprm is the custom ...
5
votes
2answers
586 views

How to set up chain of permission levels for a user?

This is a great answer that describes the ways you can handle user permission levels for inline actions. According to that answer: This can be done a few ways (ordered from most risky for the user ...
1
vote
2answers
258 views

I have an error when deploying bios contract

Please help me to solve a problem. I recently updated eosio to v1.0.5 and got an error while deploying bios contract. I had no such problems neither with version v1.0.2 nor with v1.0.1. I followed ...
4
votes
1answer
635 views

“dice” contract “withdraw” action problem

I wonder if anyone experienced a similar problem and managed to resolve it. I'm testing the "dice" contract on my local tesnet. I've setup up all necessary contracts and could deposit assets to the "...
1
vote
2answers
533 views

What is the purpose for each of the eosio.* system accounts?

There are several eosio.* accounts - also referred to as system accounts - described in the bios sequence tutorial: eosio.bpay eosio.msig eosio.names eosio.ram eosio.ramfee eosio.saving eosio.stake ...
4
votes
2answers
2k views

How can you add or change the keys for the owner of an account?

How can I change the owner of an account? Can an account have more than one owner? I see that active and owner are groups so theoretically there can be multiple keys in either group. But how can I ...
0
votes
1answer
369 views

How to do multi authorization?

I have a question, assume an account named user with a permission @active, and is authorized to bob@active and alice@active, if I want to send a transfer action, do I need all the authorization in my ...
6
votes
1answer
2k views

How to change active key for an account?

My active and owner keys are the same. I want to change active key to be different from owner, for safety. What command should I use?
1
vote
0answers
163 views

Exception when updating permission in EOS 1.0.1 with eosjs 14.1

The code below will produce the following error message: TypeError: Cannot read property 'threshold' of undefined authority.threshold updateauth.auth action.data transaction.actions index.js:121 ...
4
votes
1answer
578 views

How can I create a custom permission within a contract and limit it to certain actions?

For example, say I wanted to create a custom permission called delegatee. An account with this permission would be only permitted to preform certain actions within my contract. Is this possible as of ...
11
votes
2answers
539 views

How to airdrop a new token to EOS holders?

If I'm developing a project on EOS that will require a new custom token I might want to do an airdrop of that token to existing EOS holders. Are there best practices on how to go about that? Roughly ...

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