1#!/usr/bin/env bash
 2
 3set -euo pipefail
 4
 5AGPL_CRATES=("collab")
 6RELEASE_CRATES=("cli" "remote_server" "zed")
 7
 8check_symlink_target () {
 9    local symlink_path="$1"
10    local license_name="$2"
11
12    local target=$(readlink "$symlink_path")
13
14    local dir=$(dirname "$symlink_path")
15    local depth=$(echo "$dir" | tr '/' '\n' | wc -l)
16    local expected_prefix=""
17    for ((i = 0; i < depth; i++)); do
18        expected_prefix="../$expected_prefix"
19    done
20    local expected_target="${expected_prefix}${license_name}"
21
22    if [[ "$target" != "$expected_target" ]]; then
23        echo "Error: $symlink_path points to '$target' but should point to '$expected_target'"
24        exit 1
25    fi
26
27    if [[ ! -e "$symlink_path" ]]; then
28        echo "Error: $symlink_path is a broken symlink (target '$target' does not exist)"
29        exit 1
30    fi
31}
32
33check_license () {
34    local dir="$1"
35    local allowed_licenses=()
36
37    local is_agpl=false
38    for agpl_crate in "${AGPL_CRATES[@]}"; do
39        if [[ "$dir" == "crates/$agpl_crate" ]]; then
40            is_agpl=true
41            break
42        fi
43    done
44
45    if [[ "$is_agpl" == true ]]; then
46        allowed_licenses=("LICENSE-AGPL")
47    else
48        allowed_licenses=("LICENSE-GPL" "LICENSE-APACHE")
49    fi
50
51    for license in "${allowed_licenses[@]}"; do
52        if [[ -L "$dir/$license" ]]; then
53            check_symlink_target "$dir/$license" "$license"
54            return 0
55        elif [[ -e "$dir/$license" ]]; then
56            echo "Error: $dir/$license exists but is not a symlink."
57            exit 1
58        fi
59    done
60
61    if [[ "$is_agpl" == true ]]; then
62        echo "Error: $dir does not contain a LICENSE-AGPL symlink"
63    else
64        echo "Error: $dir does not contain a LICENSE-GPL or LICENSE-APACHE symlink"
65    fi
66    exit 1
67}
68
69git ls-files "**/*/Cargo.toml" | while read -r cargo_toml; do
70   check_license "$(dirname "$cargo_toml")"
71done
72
73
74# Make sure the AGPL server crates are included in the release tarball.
75for release_crate in "${RELEASE_CRATES[@]}"; do
76    tree_output=$(cargo tree --package "$release_crate")
77    for agpl_crate in "${AGPL_CRATES[@]}"; do
78        # Look for lines that contain the crate name followed by " v" (version)
79        # This matches patterns like "├── collab v0.44.0"
80        if echo "$tree_output" | grep -E "(^|[^a-zA-Z_])${agpl_crate} v" > /dev/null; then
81            echo "Error: crate '${agpl_crate}' is AGPL and is a dependency of crate '${release_crate}'." >&2
82            echo "AGPL licensed code should not be used in the release distribution, only in servers." >&2
83            exit 1
84        fi
85    done
86done
87
88echo "check-licenses succeeded"