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error handling

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This commit is contained in:
Antoni Piasecki
2026-03-16 10:59:55 +01:00
parent 964bbe4ec0
commit 720218cf31
16 changed files with 138 additions and 58 deletions
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34
src/std/net.zr
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@@ -4,14 +4,17 @@ const SOCK_DGRAM = 2
const SOL_SOCKET = 1
const SO_REUSEADDR = 2
func net.listen[packed_host: i64, port: i64] : i64
func net.listen?[packed_host: i64, port: i64] : i64
err.clear()
let s: i64 = _builtin_syscall(SYS_socket, AF_INET, SOCK_STREAM, 0)
if s < 0
err.set(ERR_SYSCALL_FAILED, "net.listen?: failed to create a socket")
return -1
let optval = 1
if _builtin_syscall(SYS_setsockopt, s, SOL_SOCKET, SO_REUSEADDR, ^optval, 8) < 0
_builtin_syscall(SYS_close, s)
err.set(ERR_SYSCALL_FAILED, "net.listen?: setsockopt() failed")
return -1
let sa: ptr = mem.alloc(16)
@@ -28,19 +31,23 @@ func net.listen[packed_host: i64, port: i64] : i64
if _builtin_syscall(SYS_bind, s, sa, 16) < 0
_builtin_syscall(SYS_close, s)
mem.free(sa)
err.set(ERR_SYSCALL_FAILED, "net.listen?: failed to bind")
return -1
mem.free(sa)
if _builtin_syscall(SYS_listen, s, 128) < 0
_builtin_syscall(SYS_close, s)
err.set(ERR_SYSCALL_FAILED, "net.listen?: listen() failed")
return -1
return s
// TODO: resolve DNS
func net.connect[packed_host: i64, port: i64] : i64
func net.connect?[packed_host: i64, port: i64] : i64
err.clear()
let s: i64 = _builtin_syscall(SYS_socket, AF_INET, SOCK_STREAM, 0)
if s < 0
err.set(ERR_SYSCALL_FAILED, "net.connect?: failed to create a socket")
return -1
let sa: ptr = mem.alloc(16)
@@ -57,6 +64,7 @@ func net.connect[packed_host: i64, port: i64] : i64
if _builtin_syscall(SYS_connect, s, sa, 16) < 0
mem.free(sa)
_builtin_syscall(SYS_close, s)
err.set(ERR_CONNECTION_FAILED, "net.connect?: connection failed")
return -1
mem.free(sa)
@@ -86,12 +94,14 @@ struct net.UDPPacket
source_addr: ptr
size: i64
func net.create_udp_client[packed_host: i64, port: i64] : net.UDPSocket
func net.create_udp_client?[packed_host: i64, port: i64] : net.UDPSocket
err.clear()
let s: net.UDPSocket = new net.UDPSocket
s->fd = _builtin_syscall(SYS_socket, AF_INET, SOCK_DGRAM, 0)
if s->fd < 0
mem.free(s)
err.set(ERR_SYSCALL_FAILED, "net.create_udp_client?: failed to create a socket")
return 0
s->addr = mem.alloc(16)
@@ -106,13 +116,15 @@ func net.create_udp_client[packed_host: i64, port: i64] : net.UDPSocket
s->addr[7] = packed_host & 255
return s
func net.udp_listen[packed_host: i64, port: i64] : net.UDPSocket
let s: net.UDPSocket = net.create_udp_client(packed_host, port)
if !s
func net.udp_listen?[packed_host: i64, port: i64] : net.UDPSocket
err.clear()
let s: net.UDPSocket = net.create_udp_client?(packed_host, port)
if err.check()
return 0
if _builtin_syscall(SYS_bind, s->fd, s->addr, 16) < 0
net.UDPSocket.close_and_free(s)
err.set(ERR_SYSCALL_FAILED, "net.udp_listen?: failed to bind")
return 0
return s
@@ -184,13 +196,15 @@ func net.build_dns_query[domain_name: str, record_type: i64] : io.Buffer
io.Buffer.free(name)
return out
func net.resolve[domain: str] : i64
// TODO: dont resolve IPs
func net.resolve?[domain: str] : i64
err.clear()
let query: io.Buffer = net.build_dns_query(domain, DNS_TYPE_A)
// TODO: this probably shouldnt be hardcoded
let s: net.UDPSocket = net.create_udp_client(net.pack_addr(8, 8, 8, 8), 53)
if s == 0
return 0
let s: net.UDPSocket = net.create_udp_client?(net.pack_addr(8, 8, 8, 8), 53)
if err.check()
return -1
net.udp_send_to(s, s->addr, query->data, query->size)
io.Buffer.free(query)