diff options
Diffstat (limited to 'shell/src')
| -rw-r--r-- | shell/src/main.rs | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/shell/src/main.rs b/shell/src/main.rs deleted file mode 100644 index 4a98828..0000000 --- a/shell/src/main.rs +++ /dev/null | |||
| @@ -1,143 +0,0 @@ | |||
| 1 | use std::{os::unix::process::CommandExt, process::ExitCode}; | ||
| 2 | |||
| 3 | fn main() -> ExitCode { | ||
| 4 | let bad_usage = ExitCode::from(2); | ||
| 5 | |||
| 6 | let mut args = std::env::args().skip(1); | ||
| 7 | if args.next() != Some("-c".to_string()) { | ||
| 8 | eprintln!("Expected usage: shell -c <argument>"); | ||
| 9 | return bad_usage; | ||
| 10 | } | ||
| 11 | let Some(cmd) = args.next() else { | ||
| 12 | eprintln!("Missing argument for argument '-c'"); | ||
| 13 | return bad_usage; | ||
| 14 | }; | ||
| 15 | if args.next().is_some() { | ||
| 16 | eprintln!("Too many arguments passed"); | ||
| 17 | return bad_usage; | ||
| 18 | } | ||
| 19 | |||
| 20 | let Some(mut cmd) = parse_cmd(&cmd) else { | ||
| 21 | eprintln!("Bad command"); | ||
| 22 | return bad_usage; | ||
| 23 | }; | ||
| 24 | |||
| 25 | let Some(mut program) = cmd.drain(0..1).next() else { | ||
| 26 | eprintln!("Bad command"); | ||
| 27 | return bad_usage; | ||
| 28 | }; | ||
| 29 | if program == "git" { | ||
| 30 | let Some(subcommand) = cmd.drain(0..1).next() else { | ||
| 31 | eprintln!("Bad command"); | ||
| 32 | return bad_usage; | ||
| 33 | }; | ||
| 34 | program.push('-'); | ||
| 35 | program.push_str(&subcommand); | ||
| 36 | } | ||
| 37 | |||
| 38 | let mut args = Vec::new(); | ||
| 39 | |||
| 40 | let git_cmds = ["git-receive-pack", "git-upload-archive", "git-upload-pack"]; | ||
| 41 | if git_cmds.contains(&program.as_str()) { | ||
| 42 | if cmd.len() != 1 { | ||
| 43 | eprintln!("Bad command"); | ||
| 44 | return bad_usage; | ||
| 45 | } | ||
| 46 | let repository = cmd[0].trim_start_matches('/'); | ||
| 47 | args.push(repository); | ||
| 48 | } else if program == "git-lfs-authenticate" { | ||
| 49 | if cmd.len() != 2 { | ||
| 50 | eprintln!("Bad command"); | ||
| 51 | return bad_usage; | ||
| 52 | } | ||
| 53 | let repository = cmd[0].trim_start_matches('/'); | ||
| 54 | args.push(repository); | ||
| 55 | args.push(&cmd[1]); | ||
| 56 | } else { | ||
| 57 | eprintln!("Unknown command"); | ||
| 58 | return bad_usage; | ||
| 59 | } | ||
| 60 | |||
| 61 | let e = std::process::Command::new(program).args(args).exec(); | ||
| 62 | eprintln!("Error: {e}"); | ||
| 63 | ExitCode::FAILURE | ||
| 64 | } | ||
| 65 | |||
| 66 | fn parse_cmd(mut cmd: &str) -> Option<Vec<String>> { | ||
| 67 | let mut args = Vec::<String>::new(); | ||
| 68 | |||
| 69 | cmd = cmd.trim_matches(is_posix_space); | ||
| 70 | while !cmd.is_empty() { | ||
| 71 | if cmd.starts_with('\'') { | ||
| 72 | let (arg, remaining) = parse_sq(cmd)?; | ||
| 73 | args.push(arg); | ||
| 74 | cmd = remaining.trim_start_matches(is_posix_space); | ||
| 75 | } else if let Some((arg, remaining)) = cmd.split_once(is_posix_space) { | ||
| 76 | args.push(arg.to_owned()); | ||
| 77 | cmd = remaining.trim_start_matches(is_posix_space); | ||
| 78 | } else { | ||
| 79 | args.push(cmd.to_owned()); | ||
| 80 | cmd = ""; | ||
| 81 | } | ||
| 82 | } | ||
| 83 | |||
| 84 | Some(args) | ||
| 85 | } | ||
| 86 | |||
| 87 | fn is_posix_space(c: char) -> bool { | ||
| 88 | // Form feed: 0x0c | ||
| 89 | // Vertical tab: 0x0b | ||
| 90 | c == ' ' || c == '\x0c' || c == '\n' || c == '\r' || c == '\t' || c == '\x0b' | ||
| 91 | } | ||
| 92 | |||
| 93 | fn parse_sq(s: &str) -> Option<(String, &str)> { | ||
| 94 | #[derive(PartialEq, Eq)] | ||
| 95 | enum SqState { | ||
| 96 | Quoted, | ||
| 97 | Unquoted { may_escape: bool }, | ||
| 98 | UnquotedEscaped, | ||
| 99 | } | ||
| 100 | |||
| 101 | let mut result = String::new(); | ||
| 102 | let mut state = SqState::Unquoted { may_escape: false }; | ||
| 103 | let mut remaining = ""; | ||
| 104 | for (i, c) in s.char_indices() { | ||
| 105 | match state { | ||
| 106 | SqState::Unquoted { may_escape: false } => { | ||
| 107 | if c != '\'' { | ||
| 108 | return None; | ||
| 109 | } | ||
| 110 | state = SqState::Quoted | ||
| 111 | } | ||
| 112 | SqState::Quoted => { | ||
| 113 | if c == '\'' { | ||
| 114 | state = SqState::Unquoted { may_escape: true }; | ||
| 115 | continue; | ||
| 116 | } | ||
| 117 | result.push(c); | ||
| 118 | } | ||
| 119 | SqState::Unquoted { may_escape: true } => { | ||
| 120 | if is_posix_space(c) { | ||
| 121 | remaining = &s[i..]; | ||
| 122 | break; | ||
| 123 | } | ||
| 124 | if c != '\\' { | ||
| 125 | return None; | ||
| 126 | } | ||
| 127 | state = SqState::UnquotedEscaped; | ||
| 128 | } | ||
| 129 | SqState::UnquotedEscaped => { | ||
| 130 | if c != '\\' && c != '!' { | ||
| 131 | return None; | ||
| 132 | } | ||
| 133 | result.push(c); | ||
| 134 | state = SqState::Unquoted { may_escape: false }; | ||
| 135 | } | ||
| 136 | } | ||
| 137 | } | ||
| 138 | |||
| 139 | if state != (SqState::Unquoted { may_escape: true }) { | ||
| 140 | return None; | ||
| 141 | } | ||
| 142 | Some((result, remaining)) | ||
| 143 | } | ||