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refactor(ssh): Partially cleaned up.

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Spencer Brower
2026-06-22 10:38:47 -04:00
parent 6139485d13
commit a11925e720
2 changed files with 22 additions and 36 deletions
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2
TODOS.md
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@@ -56,6 +56,8 @@
28. Pass allocator to findr?
29. Update `read_wire_string` to use a slice.
## Double-check AI output
- [ ] cli.odin

56
ssh.odin
View File

@@ -2,7 +2,9 @@ package main
import "base:runtime"
import "core:encoding/base64"
import "core:encoding/endian"
import "core:fmt"
import "core:mem"
import "core:os"
import "core:strings"
@@ -44,9 +46,7 @@ parse_ssh_public_key :: proc(pub_path: string) -> (pub: [32]u8, ok: bool) {
return
}
for i in 0 ..< 32 {
pub[i] = pk_data[i]
}
mem.copy_non_overlapping(&pub[0], raw_data(pk_data), 32)
ok = true
return
@@ -86,15 +86,10 @@ parse_ssh_private_key :: proc(priv_path: string) -> (kp: Ed25519Keypair, ok: boo
return
}
magic := "openssh-key-v1\x00"
if len(decoded) < len(magic) {
magic :: "openssh-key-v1\x00"
if !strings.has_prefix(string(decoded), magic) {
return
}
for i in 0 ..< len(magic) {
if decoded[i] != u8(magic[i]) {
return
}
}
offset := len(magic)
@@ -116,11 +111,8 @@ parse_ssh_private_key :: proc(priv_path: string) -> (kp: Ed25519Keypair, ok: boo
if offset + 4 > len(decoded) {
return
}
num_keys :=
u32(decoded[offset]) << 24 |
u32(decoded[offset + 1]) << 16 |
u32(decoded[offset + 2]) << 8 |
u32(decoded[offset + 3])
num_keys := endian.get_u32(decoded[offset:offset + 4], .Big) or_return
offset += 4
if num_keys != 1 {
@@ -141,17 +133,16 @@ parse_ssh_private_key :: proc(priv_path: string) -> (kp: Ed25519Keypair, ok: boo
if inner_offset + 8 > len(priv_blob) {
return
}
check1 :=
u32(priv_blob[inner_offset]) << 24 |
u32(priv_blob[inner_offset + 1]) << 16 |
u32(priv_blob[inner_offset + 2]) << 8 |
u32(priv_blob[inner_offset + 3])
check1 := endian.get_u32(
transmute([]u8)(priv_blob)[inner_offset:inner_offset + 4],
.Big,
) or_return
inner_offset += 4
check2 :=
u32(priv_blob[inner_offset]) << 24 |
u32(priv_blob[inner_offset + 1]) << 16 |
u32(priv_blob[inner_offset + 2]) << 8 |
u32(priv_blob[inner_offset + 3])
check2 := endian.get_u32(
transmute([]u8)(priv_blob)[inner_offset:inner_offset + 4],
.Big,
) or_return
inner_offset += 4
if check1 != check2 {
@@ -167,17 +158,14 @@ parse_ssh_private_key :: proc(priv_path: string) -> (kp: Ed25519Keypair, ok: boo
if !pub_ok || len(pub_wire) != 32 {
return
}
for i in 0 ..< 32 {
kp.Public[i] = pub_wire[i]
}
mem.copy_non_overlapping(&kp.Public[0], raw_data(pub_wire), 32)
priv_wire, priv_ok := read_wire_string(transmute([]u8)priv_blob, &inner_offset)
if !priv_ok || len(priv_wire) != 64 {
return
}
for i in 0 ..< 32 {
kp.Private[i] = priv_wire[i]
}
mem.copy_non_overlapping(&kp.Private[0], raw_data(priv_wire), 32)
ok = true
return
@@ -198,11 +186,7 @@ read_wire_string :: proc(data: []u8, offset: ^int) -> (s: string, ok: bool) {
if offset^ + 4 > len(data) {
return
}
length :=
u32(data[offset^]) << 24 |
u32(data[offset^ + 1]) << 16 |
u32(data[offset^ + 2]) << 8 |
u32(data[offset^ + 3])
length := endian.get_u32(data[offset^:offset^ + 4], .Big) or_return
offset^ += 4
if offset^ + int(length) > len(data) {