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AuthAccount capabilities #53

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merged 7 commits into from
Mar 22, 2023
Merged

AuthAccount capabilities #53

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88785e2
add FLIP for AuthAccount capabilities
turbolent Dec 7, 2022
1f2359f
Add FLIP number
turbolent Dec 7, 2022
8b7c584
account links must be private
turbolent Mar 3, 2023
d2ed02e
linkAccount emits an event of type flow.AccountLinked
turbolent Mar 3, 2023
2372783
account linking is only available when the #allowAccountLinking pragm…
turbolent Mar 3, 2023
e46e753
add an example
turbolent Mar 3, 2023
f92446a
Accept FLIP
turbolent Mar 22, 2023
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account links must be private
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@turbolent
turbolent committed Mar 3, 2023
commit 8b7c584d14a492c369bf7aa58df121d98daeddde
9 changes: 6 additions & 3 deletions cadence/2022-12-07-authaccount-capabilities.md
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Expand Up @@ -5,7 +5,7 @@
| **FLIP #** | [53](https://github.com/onflow/flips/pull/53) |
| **Author(s)** | Bastian Müller (bastian@dapperlabs.com) |
| **Sponsor** | Bastian Müller (bastian@dapperlabs.com) |
| **Updated** | 2022-12-07 |
| **Updated** | 2022-03-02 |

## Objective

Expand All @@ -29,10 +29,13 @@ in their smart contracts, dapps, user agents, etc.
This proposal suggest adding a new function to the type `AuthAccount`:

```cadence
fun linkAccount(_ newCapabilityPath: CapabilityPath): Capability<&AuthAccount>?
fun linkAccount(_ newCapabilityPath: PrivatePath): Capability<&AuthAccount>?
```

This new function behaves like the existing function `link`, but instead of creating a link to a value in storage, it creates links to the account.
This new function behaves like the existing function `link`, but

- It creates a link to the account, instead of creating a link to a value in account storage.
- It only supports private paths (`/private`).

Existing functions that work with links/capabilities, like `getCapability`, `borrow`, `unlink`, etc., can be used with account capabilities,
just like they currently can be used for storage path links.
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