From 40310faa4be40767af36000ef9a029582336d9ea Mon Sep 17 00:00:00 2001
From: Lorenz Stechauner <lorenz.stechauner@necronda.net>
Date: Sun, 29 Jan 2023 11:38:48 +0100
Subject: [PATCH] Update error to support getaddrinfo

---
 src/lib/error.c | 28 ++++++++++++----------------
 src/lib/error.h |  2 ++
 2 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/src/lib/error.c b/src/lib/error.c
index dbc148d..e302a31 100644
--- a/src/lib/error.c
+++ b/src/lib/error.c
@@ -11,6 +11,7 @@
 
 #include <errno.h>
 #include <string.h>
+#include <netdb.h>
 
 extern const char *sock_error_str(unsigned long err);
 extern const char *http_error_str(int err);
@@ -29,23 +30,14 @@ static unsigned long error_decompress(int err) {
 
 const char *error_str(int err_no, char *buf, int buf_len) {
     buf[0] = 0;
-    unsigned char mode = (unsigned char) (err_no >> 24);
     int e = err_no & 0x00FFFFFF;
-    if (mode == 0x00) {
-        // normal
-        return strerror_r(e, buf, buf_len);
-    } else if (mode == 0x01) {
-        // ssl
-        return sock_error_str(error_decompress(e));
-    } else if (mode == 0x02) {
-        // ssl err
-        return ERR_reason_error_string(error_decompress(e));
-    } else if (mode == 0x03) {
-        // mmdb
-        return MMDB_strerror(e);
-    } else if (mode == 0x04) {
-        // http
-        return http_error_str(e);
+    switch (err_no >> 24) {
+        case 0x00: return strerror_r(e, buf, buf_len);
+        case 0x01: return sock_error_str(error_decompress(e));
+        case 0x02: return ERR_reason_error_string(error_decompress(e));
+        case 0x03: return MMDB_strerror(e);
+        case 0x04: return http_error_str(e);
+        case 0x05: return gai_strerror(e);
     }
     return buf;
 }
@@ -66,6 +58,10 @@ void error_http(int err) {
     errno = 0x04000000 | err;
 }
 
+void error_gai(int err) {
+    errno = 0x05000000 | err;
+}
+
 static int error_get(unsigned char prefix) {
     return (errno >> 24 != prefix) ? 0 : errno & 0x00FFFFFF;
 }
diff --git a/src/lib/error.h b/src/lib/error.h
index 60dc0b3..04b9640 100644
--- a/src/lib/error.h
+++ b/src/lib/error.h
@@ -19,6 +19,8 @@ void error_mmdb(int err);
 
 void error_http(int err);
 
+void error_gai(int err);
+
 int error_get_sys();
 
 int error_get_ssl();