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Add finger demo to redbean and fix regression

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This change fixes a regression in unix.connect() caused by the recent
addition of UNIX domain sockets. The BSD finger command has been added
to third_party for fun and profit. A new demo has been added to redbean
showing how a protocol as simple as finger can be implemented.
This commit is contained in:
Justine Tunney 2022-06-23 03:39:44 -07:00
parent 2415afab0e
commit 17cbe73411
34 changed files with 2454 additions and 29 deletions
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24
tool/net/lfuncs.c
View file

@ -21,6 +21,7 @@
#include "libc/bits/popcnt.h"
#include "libc/calls/calls.h"
#include "libc/calls/struct/rusage.h"
#include "libc/dns/dns.h"
#include "libc/fmt/itoa.h"
#include "libc/fmt/leb128.h"
#include "libc/intrin/kprintf.h"
@ -41,7 +42,9 @@
#include "libc/runtime/sysconf.h"
#include "libc/sock/sock.h"
#include "libc/sysv/consts/af.h"
#include "libc/sysv/consts/ipproto.h"
#include "libc/sysv/consts/rusage.h"
#include "libc/sysv/consts/sock.h"
#include "libc/time/time.h"
#include "libc/x/x.h"
#include "net/http/escape.h"
@ -379,6 +382,27 @@ int LuaSlurp(lua_State *L) {
}
}
int LuaResolveIp(lua_State *L) {
ssize_t rc;
int64_t ip;
const char *host;
struct addrinfo *ai = NULL;
struct addrinfo hint = {AI_NUMERICSERV, AF_INET, SOCK_STREAM, IPPROTO_TCP};
host = luaL_checkstring(L, 1);
if ((ip = ParseIp(host, -1)) != -1) {
lua_pushinteger(L, ntohl(ai->ai_addr4->sin_addr.s_addr));
return 1;
} else if ((rc = getaddrinfo(host, "0", &hint, &ai)) == EAI_SUCCESS) {
lua_pushinteger(L, ntohl(ai->ai_addr4->sin_addr.s_addr));
freeaddrinfo(ai);
return 1;
} else {
lua_pushnil(L);
lua_pushfstring(L, "%s: DNS lookup failed: EAI_%s", host, gai_strerror(rc));
return 2;
}
}
static int LuaCheckControlFlags(lua_State *L, int idx) {
int f = luaL_checkinteger(L, idx);
if (f & ~(kControlWs | kControlC0 | kControlC1)) {