Remove references to "bwrs" #2195

Squashed commit of the following:

commit 1bdf1c7954e0731c95703d10118f3874ab5155d3
Merge: 8ba6e61 7257251
Author: Daniel García <[email protected]>
Date:   Sun Jan 23 23:40:17 2022 +0100

    Merge branch 'remove-bwrs' of https://github.com/RealOrangeOne/vaultwarden into RealOrangeOne-remove-bwrs

commit 7257251ecf23af18deb894e8f2e5519a15360c76
Author: Jake Howard <[email protected]>
Date:   Thu Jan 6 17:48:18 2022 +0000

    Use `or_else` to save potentially unnecessary function call

commit 40ae81dd3c43a596375d5bfdcc00053e786328cc
Author: Jake Howard <[email protected]>
Date:   Wed Jan 5 21:18:24 2022 +0000

    Move $BWRS_VERSION fallback into build.rs

commit 743ef74b307a662960f3ca1b9636f3608506516d
Author: Jake Howard <[email protected]>
Date:   Sat Jan 1 23:08:27 2022 +0000

    Revert "Add feature to enable use of `Option::or` in const context"

    This reverts commit fe8e043b8aaf77c083747bf11760f29b53df0bba.

    We want to run on stable soon, where these features are not supported

commit a1f0da638c8b6ba32209318b105bde1efdd47082
Author: Jake Howard <[email protected]>
Date:   Sat Jan 1 13:04:47 2022 +0000

    Rename web vault version file

    https://github.com/dani-garcia/bw_web_builds/pull/58

commit fe8e043b8aaf77c083747bf11760f29b53df0bba
Author: Jake Howard <[email protected]>
Date:   Sat Jan 1 12:56:44 2022 +0000

    Add feature to enable use of `Option::or` in const context

commit 687435c8b2b995e90bf6f0ee619bc305e37bc183
Author: Jake Howard <[email protected]>
Date:   Sat Jan 1 12:27:28 2022 +0000

    Continue to allow using `$BWRS_VERSION`

commit 8e2f708e5037db8071251c582ebaf1a97d8e5923
Author: Jake Howard <[email protected]>
Date:   Fri Dec 31 11:41:34 2021 +0000

    Remove references to "bwrs"

    The only remaining one is getting the version of the web vault, which requires coordinating with the web vault patching.

1 files changed, 19 insertions, 22 deletions

diff --git a/build.rs b/build.rs
index 39c16095..7d0a7bce 100644
--- a/build.rs
+++ b/build.rs
@@ -15,11 +15,14 @@ fn main() {
         "You need to enable one DB backend. To build with previous defaults do: cargo build --features sqlite"
     );
 
-    if let Ok(version) = env::var("BWRS_VERSION") {
-        println!("cargo:rustc-env=BWRS_VERSION={}", version);
+    // Support $BWRS_VERSION for legacy compatibility, but default to $VW_VERSION.
+    // If neither exist, read from git.
+    let maybe_vaultwarden_version =
+        env::var("VW_VERSION").or_else(|_| env::var("BWRS_VERSION")).or_else(|_| version_from_git_info());
+
+    if let Ok(version) = maybe_vaultwarden_version {
+        println!("cargo:rustc-env=VW_VERSION={}", version);
         println!("cargo:rustc-env=CARGO_PKG_VERSION={}", version);
-    } else {
-        read_git_info().ok();
     }
 }
 
@@ -33,7 +36,13 @@ fn run(args: &[&str]) -> Result<String, std::io::Error> {
 }
 
 /// This method reads info from Git, namely tags, branch, and revision
-fn read_git_info() -> Result<(), std::io::Error> {
+/// To access these values, use:
+///    - env!("GIT_EXACT_TAG")
+///    - env!("GIT_LAST_TAG")
+///    - env!("GIT_BRANCH")
+///    - env!("GIT_REV")
+///    - env!("VW_VERSION")
+fn version_from_git_info() -> Result<String, std::io::Error> {
     // The exact tag for the current commit, can be empty when
     // the current commit doesn't have an associated tag
     let exact_tag = run(&["git", "describe", "--abbrev=0", "--tags", "--exact-match"]).ok();
@@ -56,23 +65,11 @@ fn read_git_info() -> Result<(), std::io::Error> {
     println!("cargo:rustc-env=GIT_REV={}", rev_short);
 
     // Combined version
-    let version = if let Some(exact) = exact_tag {
-        exact
+    if let Some(exact) = exact_tag {
+        Ok(exact)
     } else if &branch != "main" && &branch != "master" {
-        format!("{}-{} ({})", last_tag, rev_short, branch)
+        Ok(format!("{}-{} ({})", last_tag, rev_short, branch))
     } else {
-        format!("{}-{}", last_tag, rev_short)
-    };
-
-    println!("cargo:rustc-env=BWRS_VERSION={}", version);
-    println!("cargo:rustc-env=CARGO_PKG_VERSION={}", version);
-
-    // To access these values, use:
-    //    env!("GIT_EXACT_TAG")
-    //    env!("GIT_LAST_TAG")
-    //    env!("GIT_BRANCH")
-    //    env!("GIT_REV")
-    //    env!("BWRS_VERSION")
-
-    Ok(())
+        Ok(format!("{}-{}", last_tag, rev_short))
+    }
 }