From 0facfa139847bb130d986ca482ad7a1bc41fb28f Mon Sep 17 00:00:00 2001 From: Weetile Date: Fri, 23 May 2025 12:43:26 +0100 Subject: [PATCH] init --- go.mod | 33 ++++++++++++++++++ go.sum | 57 +++++++++++++++++++++++++++++++ main.go | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 194 insertions(+) create mode 100644 go.mod create mode 100644 go.sum create mode 100644 main.go diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..6faed8c --- /dev/null +++ b/go.mod @@ -0,0 +1,33 @@ +module shrunner + +go 1.24.3 + +require ( + github.com/atotto/clipboard v0.1.4 // indirect + github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect + github.com/catppuccin/go v0.3.0 // indirect + github.com/charmbracelet/bubbles v0.21.0 // indirect + github.com/charmbracelet/bubbletea v1.3.4 // indirect + github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect + github.com/charmbracelet/huh v0.7.0 // indirect + github.com/charmbracelet/lipgloss v1.1.0 // indirect + github.com/charmbracelet/x/ansi v0.8.0 // indirect + github.com/charmbracelet/x/cellbuf v0.0.13 // indirect + github.com/charmbracelet/x/exp/strings v0.0.0-20240722160745-212f7b056ed0 // indirect + github.com/charmbracelet/x/term v0.2.1 // indirect + github.com/dustin/go-humanize v1.0.1 // indirect + github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect + github.com/lucasb-eyer/go-colorful v1.2.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/mattn/go-localereader v0.0.1 // indirect + github.com/mattn/go-runewidth v0.0.16 // indirect + github.com/mitchellh/hashstructure/v2 v2.0.2 // indirect + github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect + github.com/muesli/cancelreader v0.2.2 // indirect + github.com/muesli/termenv v0.16.0 // indirect + github.com/rivo/uniseg v0.4.7 // indirect + github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect + golang.org/x/sync v0.12.0 // indirect + golang.org/x/sys v0.31.0 // indirect + golang.org/x/text v0.23.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..5d6cd9e --- /dev/null +++ b/go.sum @@ -0,0 +1,57 @@ +github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4= +github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI= +github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k= +github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8= +github.com/catppuccin/go v0.3.0 h1:d+0/YicIq+hSTo5oPuRi5kOpqkVA5tAsU6dNhvRu+aY= +github.com/catppuccin/go v0.3.0/go.mod h1:8IHJuMGaUUjQM82qBrGNBv7LFq6JI3NnQCF6MOlZjpc= +github.com/charmbracelet/bubbles v0.21.0 h1:9TdC97SdRVg/1aaXNVWfFH3nnLAwOXr8Fn6u6mfQdFs= +github.com/charmbracelet/bubbles v0.21.0/go.mod h1:HF+v6QUR4HkEpz62dx7ym2xc71/KBHg+zKwJtMw+qtg= +github.com/charmbracelet/bubbletea v1.3.4 h1:kCg7B+jSCFPLYRA52SDZjr51kG/fMUEoPoZrkaDHyoI= +github.com/charmbracelet/bubbletea v1.3.4/go.mod h1:dtcUCyCGEX3g9tosuYiut3MXgY/Jsv9nKVdibKKRRXo= +github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc h1:4pZI35227imm7yK2bGPcfpFEmuY1gc2YSTShr4iJBfs= +github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc/go.mod h1:X4/0JoqgTIPSFcRA/P6INZzIuyqdFY5rm8tb41s9okk= +github.com/charmbracelet/huh v0.7.0 h1:W8S1uyGETgj9Tuda3/JdVkc3x7DBLZYPZc4c+/rnRdc= +github.com/charmbracelet/huh v0.7.0/go.mod h1:UGC3DZHlgOKHvHC07a5vHag41zzhpPFj34U92sOmyuk= +github.com/charmbracelet/lipgloss v1.1.0 h1:vYXsiLHVkK7fp74RkV7b2kq9+zDLoEU4MZoFqR/noCY= +github.com/charmbracelet/lipgloss v1.1.0/go.mod h1:/6Q8FR2o+kj8rz4Dq0zQc3vYf7X+B0binUUBwA0aL30= +github.com/charmbracelet/x/ansi v0.8.0 h1:9GTq3xq9caJW8ZrBTe0LIe2fvfLR/bYXKTx2llXn7xE= +github.com/charmbracelet/x/ansi v0.8.0/go.mod h1:wdYl/ONOLHLIVmQaxbIYEC/cRKOQyjTkowiI4blgS9Q= +github.com/charmbracelet/x/cellbuf v0.0.13 h1:/KBBKHuVRbq1lYx5BzEHBAFBP8VcQzJejZ/IA3iR28k= +github.com/charmbracelet/x/cellbuf v0.0.13/go.mod h1:xe0nKWGd3eJgtqZRaN9RjMtK7xUYchjzPr7q6kcvCCs= +github.com/charmbracelet/x/exp/strings v0.0.0-20240722160745-212f7b056ed0 h1:qko3AQ4gK1MTS/de7F5hPGx6/k1u0w4TeYmBFwzYVP4= +github.com/charmbracelet/x/exp/strings v0.0.0-20240722160745-212f7b056ed0/go.mod h1:pBhA0ybfXv6hDjQUZ7hk1lVxBiUbupdw5R31yPUViVQ= +github.com/charmbracelet/x/term v0.2.1 h1:AQeHeLZ1OqSXhrAWpYUtZyX1T3zVxfpZuEQMIQaGIAQ= +github.com/charmbracelet/x/term v0.2.1/go.mod h1:oQ4enTYFV7QN4m0i9mzHrViD7TQKvNEEkHUMCmsxdUg= +github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY= +github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto= +github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f h1:Y/CXytFA4m6baUTXGLOoWe4PQhGxaX0KpnayAqC48p4= +github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f/go.mod h1:vw97MGsxSvLiUE2X8qFplwetxpGLQrlU1Q9AUEIzCaM= +github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY= +github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0= +github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY= +github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y= +github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4= +github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88= +github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc= +github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w= +github.com/mitchellh/hashstructure/v2 v2.0.2 h1:vGKWl0YJqUNxE8d+h8f6NJLcCJrgbhC4NcD46KavDd4= +github.com/mitchellh/hashstructure/v2 v2.0.2/go.mod h1:MG3aRVU/N29oo/V/IhBX8GR/zz4kQkprJgF2EVszyDE= +github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 h1:ZK8zHtRHOkbHy6Mmr5D264iyp3TiX5OmNcI5cIARiQI= +github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6/go.mod h1:CJlz5H+gyd6CUWT45Oy4q24RdLyn7Md9Vj2/ldJBSIo= +github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA= +github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo= +github.com/muesli/termenv v0.16.0 h1:S5AlUN9dENB57rsbnkPyfdGuWIlkmzJjbFf0Tf5FWUc= +github.com/muesli/termenv v0.16.0/go.mod h1:ZRfOIKPFDYQoDFF4Olj7/QJbW60Ol/kL1pU3VfY/Cnk= +github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc= +github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ= +github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88= +github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no= +github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM= +golang.org/x/sync v0.12.0 h1:MHc5BpPuC30uJk597Ri8TV3CNZcTLu6B6z4lJy+g6Jw= +golang.org/x/sync v0.12.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA= +golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik= +golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k= +golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY= +golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4= diff --git a/main.go b/main.go new file mode 100644 index 0000000..298577c --- /dev/null +++ b/main.go @@ -0,0 +1,104 @@ +package main + +import ( + "fmt" + "io" + "net/http" + "os" + "strings" +) + +// maxRedirects defines the maximum number of redirects to follow. +const maxRedirects = 10 + +// isValidURLAndFetchContent checks if the URL is valid and fetches its content. +// It handles redirects and checks for the .sh extension. +// It returns the content, a boolean indicating validity, and an error if any. +func isValidURLAndFetchContent(url string, redirectCount int) ([]byte, bool, error) { + if redirectCount > maxRedirects { + return nil, false, fmt.Errorf("too many redirects") + } + + // Check if the URL ends with .sh + if strings.HasSuffix(strings.ToLower(url), ".sh") { + // If it ends with .sh, try to download it directly + fmt.Printf("Attempting to download: %s\n", url) + resp, err := http.Get(url) + if err != nil { + return nil, false, fmt.Errorf("failed to download from %s: %w", url, err) + } + defer resp.Body.Close() + + if resp.StatusCode >= 200 && resp.StatusCode < 300 { + content, err := io.ReadAll(resp.Body) + if err != nil { + return nil, false, fmt.Errorf("failed to read content from %s: %w", url, err) + } + return content, true, nil + } + // If status is not OK, but it ended with .sh, we treat it as a failed download for a .sh file. + return nil, false, fmt.Errorf("failed to download %s: status code %d", url, resp.StatusCode) + } + + // If it doesn't end with .sh, check for redirect + fmt.Printf("URL %s does not end with .sh, checking for redirect...\n", url) + client := &http.Client{ + CheckRedirect: func(req *http.Request, via []*http.Request) error { + return http.ErrUseLastResponse // Do not follow redirects automatically + }, + } + + resp, err := client.Get(url) // Using Get to be able to read body if needed, though Head is often used for just status/headers + if err != nil { + return nil, false, fmt.Errorf("failed to request %s: %w", url, err) + } + defer resp.Body.Close() + + switch resp.StatusCode { + case http.StatusMovedPermanently, http.StatusFound, http.StatusSeeOther, http.StatusTemporaryRedirect, http.StatusPermanentRedirect: + location, err := resp.Location() + if err != nil { + return nil, false, fmt.Errorf("failed to get redirect location from %s: %w", url, err) + } + fmt.Printf("Redirected to: %s\n", location.String()) + return isValidURLAndFetchContent(location.String(), redirectCount+1) + default: + // Not a .sh and not a redirect status code + return nil, false, fmt.Errorf("URL %s does not end in .sh and did not redirect (status: %d)", url, resp.StatusCode) + } +} + +// hasShebang checks if the content starts with "#!". +func hasShebang(content []byte) bool { + return len(content) >= 2 && content[0] == '#' && content[1] == '!' +} + +func main() { + if len(os.Args) < 2 { + fmt.Println("Usage: go run script_downloader.go ") + os.Exit(1) + } + initialURL := os.Args[1] + + content, isValid, err := isValidURLAndFetchContent(initialURL, 0) + if err != nil { + fmt.Fprintf(os.Stderr, "Error: %v\n", err) + os.Exit(1) + } + + if !isValid { + // This case should ideally be covered by errors from isValidURLAndFetchContent + fmt.Fprintf(os.Stderr, "The provided URL is invalid or does not point to a valid .sh file after redirects.\n") + os.Exit(1) + } + + if hasShebang(content) { + fmt.Println("Valid script found. Content:") + fmt.Println("--- SCRIPT START ---") + fmt.Print(string(content)) + fmt.Println("--- SCRIPT END ---") + } else { + fmt.Fprintf(os.Stderr, "Error: The file from URL %s does not start with a shebang '#!'.\n", initialURL) + os.Exit(1) + } +}