Remove OpenSSL dependency

```
musl-gcc -Os -static -s dzr.c
```

This produce a 78KiB statically linked binary

TODO: find a blowfish lib

.github/workflows/push.yml

@@ -1,6 +1,9 @@
 name: push
 
-on: [push]
+on:
+  push:
+    branches:
+      - master
 
 jobs:
   build:
@@ -18,11 +21,21 @@ jobs:
         choco install llvm
         choco install openssl.light
     - name: build
-      run: cc dzr.c -L/usr/local/opt/openssl/lib -I/usr/local/opt/openssl/include -lssl -lcrypto -o dzr
+      if: startsWith(matrix.os, 'mac')
+      run: |
+        cc dzr.c -Os -s -DUSE_SSL -L/usr/local/opt/openssl/lib -I/usr/local/opt/openssl/include -lssl -lcrypto -o dzr
+        brew install musl* upx*
+        musl-gcc -Os -s -static dzr.c -o dzr_static
+    - name: build
+      if: startsWith(matrix.os, 'ubuntu')
+      run: |
+        cc dzr.c -Os -s -DUSE_SSL -lssl -lcrypto -o dzr
+        sudo apt install musl*
+        musl-gcc -Os -s -static dzr.c -o dzr_static
     - name: publish
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        RELEASE_FILES: dzr
+        RELEASE_FILES: dzr dzr_static
       run: |
         RELEASE_TAG="$(date +%y%m%d)"
         curl -svL -XPOST -d '{"tag_name": "'$RELEASE_TAG'"}' \
@@ -31,7 +44,7 @@ jobs:
           "https://api.github.com/repos/${GITHUB_REPOSITORY}/releases"
         RELEASE_ID=$(curl -svL https://api.github.com/repos/${GITHUB_REPOSITORY}/releases/tags/$RELEASE_TAG | jq .id)
         for RELEASE_FILE in $RELEASE_FILES; do \
-          curl -svL -XPOST -T $RELEASE_FILE \
+          [ -x $RELEASE_FILE ] && curl -svL -XPOST -T $RELEASE_FILE \
           -H "Authorization: token $GITHUB_TOKEN" \
           -H "Content-Type:application/octet-stream" \
           "https://uploads.github.com/repos/${GITHUB_REPOSITORY}/releases/$RELEASE_ID/assets?&name=$RELEASE_FILE-$OS" ; \

README.md

@@ -1,9 +1,8 @@
 <img width=100% height=200 src=.logo.svg>
 <p align=center>Your favorite flows, straight from shell</p>
 
-> ⚠️ For legal reasons, `dzr` does contain any encryption/decryption keys,  
-> so you must [find them](https://github.com/yne/dzr/wiki) by yourself.  
-> If you think this project break any legal rules: open an issue to discuss
+> ⚠️ For legal reasons, `dzr` does not contain any private keys,
+> so [find them](https://github.com/yne/dzr/wiki) yourself.  
 
 # Preview
 
@@ -15,34 +14,31 @@
 
 See [release](https://github.com/yne/dzr/releases) for the prebuild binary.
 
-You can also build it yourself:
+# Build
 
 ```bash
-apt install gcc libssl1* libssl-dev # build deps
-gcc dzr.c -lssl -lcrypto -o dzr
+cc dzr.c # HTTP only, work with DZR_API method
 ```
-# Setup
 
-Be sure to have set the `DZR_AES` and `DZR_CBC` environement variables.
+<details><summary>Build with HTTPS support via LibSSL</summary>
 
-* **I want to use my account:**
-you shall also set your `DZR_SID`.  
-* **I don't have/want an account:**
-set the `DZR_LUT` to point to the `dzr-db` binary (see bellow).
+```bash
+apt install gcc libssl1* libssl-dev
+gcc dzr.c -DUSE_SSL -lssl -lcrypto -o dzr
+```
 
-Once complete, you should have the following variable set in your `.bashrc`:
+</details>
+
+# Setup
 
-  - `DZR_AES` = `jo..............` [HOWTO](https://github.com/yne/dzr/wiki)
-  - `DZR_CBC` = `g4el............` [HOWTO](https://github.com/yne/dzr/wiki)
-  - `DZR_LUT` = `/path/to/dzr-db %s`
-  - `DZR_SID` = your_sid (optional) [HOWTO](https://github.com/yne/dzr/wiki)
-  - `DZR_FMT` = `0` (can be: 128Kb:`0`, 320Kb:`3`, AAC96:`8`, FLAC:`9`)
+Setup `dzr` environement variables using the
+[wiki](https://github.com/yne/dzr/wiki) in your `.bashrc`/`.zshrc`.
 
 # Usage
 
 ```sh
 dzr 997764 > my.mp3
-dzr 997764 | mpv --cache-secs 360 -
+dzr 997764 | mpv -
 DZR_FMT=9 dzr 997764 > my.flac
 dzr-api artist pink floyds | xargs dzr | mpv -
 ```