Translate status codes to canonical status texts

Use those in HTTP responses instead of "OK"/"ERROR".
Apps like Tokodon show only the status text in unexpected responses.

http_codes.h

@@ -0,0 +1,45 @@
+HTTP_STATUS(100, CONTINUE, Continue)
+HTTP_STATUS(101, SWITCHING_PROTOCOLS, Switching Protocols)
+HTTP_STATUS(102, PROCESSING, Processing)
+HTTP_STATUS(103, EARLY_HINTS, Early Hints)
+HTTP_STATUS(200, OK, OK)
+HTTP_STATUS(201, CREATED, Created)
+HTTP_STATUS(202, ACCEPTED, Accepted)
+HTTP_STATUS(203, NON_AUTHORITATIVE_INFORMATION, Non Authoritative Information)
+HTTP_STATUS(204, NO_CONTENT, No Content)
+HTTP_STATUS(205, RESET_CONTENT, Reset Content)
+HTTP_STATUS(206, PARTIAL_CONTENT, Partial Content)
+HTTP_STATUS(207, MULTI_STATUS, Multi Status)
+HTTP_STATUS(208, ALREADY_REPORTED, Already Reported)
+HTTP_STATUS(218, THIS_IS_FINE, This Is Fine)
+HTTP_STATUS(226, IM_USED, IM Used)
+HTTP_STATUS(300, MULTIPLE_CHOICES, Multiple Choices)
+HTTP_STATUS(301, MOVED_PERMANENTLY, Moved Permanently)
+HTTP_STATUS(302, FOUND, Found)
+HTTP_STATUS(303, SEE_OTHER, See Other)
+HTTP_STATUS(304, NOT_MODIFIED, Not Modified)
+HTTP_STATUS(305, USE_PROXY, Use Proxy)
+HTTP_STATUS(306, SWITCH_PROXY, Switch Proxy)
+HTTP_STATUS(307, TEMPORARY_REDIRECT, Temporary Redirect)
+HTTP_STATUS(308, PERMANENT_REDIRECT, Permanent Redirect)
+HTTP_STATUS(400, BAD_REQUEST, Bad Request)
+HTTP_STATUS(401, UNAUTHORIZED, Unauthorized)
+HTTP_STATUS(402, PAYMENT_REQUIRED, Payment Required)
+HTTP_STATUS(403, FORBIDDEN, Forbidden)
+HTTP_STATUS(404, NOT_FOUND, Not Found)
+HTTP_STATUS(405, METHOD_NOT_ALLOWED, Method Not Allowed)
+HTTP_STATUS(406, NOT_ACCEPTABLE, Not Acceptable)
+HTTP_STATUS(407, PROXY_AUTHENTICATION_REQUIRED, Proxy Authentication Required)
+HTTP_STATUS(408, REQUEST_TIMEOUT, Request Timeout)
+HTTP_STATUS(409, CONFLICT, Conflict)
+HTTP_STATUS(410, GONE, Gone)
+HTTP_STATUS(421, MISDIRECTED_REQUEST, Misdirected Request)
+HTTP_STATUS(422, UNPROCESSABLE_CONTENT, Unprocessable Content)
+HTTP_STATUS(499, CLIENT_CLOSED_REQUEST, Client Closed Request)
+HTTP_STATUS(500, INTERNAL_SERVER_ERROR, Internal Server Error)
+HTTP_STATUS(501, NOT_IMPLEMENTED, Not Implemented)
+HTTP_STATUS(502, BAD_GATEWAY, Bad Gateway)
+HTTP_STATUS(503, SERVICE_UNAVAILABLE, Service Unavailable)
+HTTP_STATUS(504, GATEWAY_TIMEOUT, Gateway Timeout)
+HTTP_STATUS(505, HTTP_VERSION_NOT_SUPPORTED, HTTP Version Not Supported)
+HTTP_STATUS(507, INSUFFICIENT_STORAGE, Insufficient Storage)

httpd.c

@@ -442,7 +442,7 @@ void httpd_connection(FILE *f)
     if (p_state->use_fcgi)
         xs_fcgi_response(f, status, headers, body, b_size, fcgi_id);
     else
-        xs_httpd_response(f, status, headers, body, b_size);
+        xs_httpd_response(f, status, http_status_text(status), headers, body, b_size);
 
     fclose(f);
 

snac.c

@@ -170,3 +170,15 @@ int check_password(const char *uid, const char *passwd, const char *hash)
 
     return ret;
 }
+
+
+const char *http_status_text(int status)
+/* translate status codes to canonical status texts */
+{
+    switch (status) {
+#define HTTP_STATUS(code, name, text) case HTTP_STATUS_ ## name: return #text;
+#include "http_codes.h"
+#undef HTTP_STATUS
+        default: return "Unknown";
+    }
+}

snac.h

@@ -367,52 +367,11 @@ void mastoapi_purge(void);
 
 void verify_links(snac *user);
 
-/* HTTP responses RFC 9110 plus some extensions */
 
 typedef enum {
-    HTTP_STATUS_CONTINUE                      = 100,
-    HTTP_STATUS_SWITCHTING_PROTOCOLS          = 101,
-    HTTP_STATUS_PROCESSING                    = 102,
-    HTTP_STATUS_EARLY_HINTS                   = 103,
-    HTTP_STATUS_OK                            = 200,
-    HTTP_STATUS_CREATED                       = 201,
-    HTTP_STATUS_ACCEPTED                      = 202,
-    HTTP_STATUS_NON_AUTHORITATIVE_INFORMATION = 203,
-    HTTP_STATUS_NO_CONTENT                    = 204,
-    HTTP_STATUS_RESET_CONTENT                 = 205,
-    HTTP_STATUS_PARTIAL_CONTENT               = 206,
-    HTTP_STATUS_MULTI_STATUS                  = 207,
-    HTTP_STATUS_ALREADY_REPORTED              = 208,
-    HTTP_STATUS_THIS_IS_FINE                  = 218,
-    HTTP_STATUS_IM_USED                       = 226,
-    HTTP_STATUS_MULTIPLE_CHOICES              = 300,
-    HTTP_STATUS_MOVED_PERMANENTLY             = 301,
-    HTTP_STATUS_FOUND                         = 302,
-    HTTP_STATUS_SEE_OTHER                     = 303,
-    HTTP_STATUS_NOT_MODIFIED                  = 304,
-    HTTP_STATUS_USE_PROXY                     = 305,
-    HTTP_STATUS_SWITCH_PROXY                  = 306,
-    HTTP_STATUS_TEMPORARY_REDIRECT            = 307,
-    HTTP_STATUS_PERMANENT_REDIRECT            = 308,
-    HTTP_STATUS_BAD_REQUEST                   = 400,
-    HTTP_STATUS_UNAUTHORIZED                  = 401,
-    HTTP_STATUS_PAYMENT_REQUIRED              = 402,
-    HTTP_STATUS_FORBIDDEN                     = 403,
-    HTTP_STATUS_NOT_FOUND                     = 404,
-    HTTP_STATUS_METHOD_NOT_ALLOWED            = 405,
-    HTTP_STATUS_NOT_ACCEPTABLE                = 406,
-    HTTP_STATUS_PROXY_AUTHENTICATION_REQUIRED = 407,
-    HTTP_STATUS_REQUEST_TIMEOUT               = 408,
-    HTTP_STATUS_CONFLICT                      = 409,
-    HTTP_STATUS_GONE                          = 410,
-    HTTP_STATUS_MISDIRECTED_REQUEST           = 421,
-    HTTP_STATUS_UNPROCESSABLE_CONTENT         = 422,
-    HTTP_STATUS_CLIENT_CLOSED_REQUEST         = 499,
-    HTTP_STATUS_INTERNAL_SERVER_ERROR         = 500,
-    HTTP_STATUS_NOT_IMPLEMENTED               = 501,
-    HTTP_STATUS_BAD_GATEWAY                   = 502,
-    HTTP_STATUS_SERVICE_UNAVAILABLE           = 503,
-    HTTP_STATUS_GATEWAY_TIMEOUT               = 504,
-    HTTP_STATUS_HTTP_VERSION_NOT_SUPPORTED    = 505,
-    HTTP_STATUS_INSUFFICIENT_STORAGE          = 507
+#define HTTP_STATUS(code, name, text) HTTP_STATUS_ ## name = code,
+#include "http_codes.h"
+#undef HTTP_STATUS
 } http_status;
+
+const char *http_status_text(int status);

xs_httpd.h

@@ -5,7 +5,7 @@
 #define _XS_HTTPD_H
 
 xs_dict *xs_httpd_request(FILE *f, xs_str **payload, int *p_size);
-void xs_httpd_response(FILE *f, int status, xs_dict *headers, xs_str *body, int b_size);
+void xs_httpd_response(FILE *f, int status, const char *status_text, xs_dict *headers, xs_str *body, int b_size);
 
 
 #ifdef XS_IMPLEMENTATION
@@ -95,14 +95,14 @@ xs_dict *xs_httpd_request(FILE *f, xs_str **payload, int *p_size)
 }
 
 
-void xs_httpd_response(FILE *f, int status, xs_dict *headers, xs_str *body, int b_size)
+void xs_httpd_response(FILE *f, int status, const char *status_text, xs_dict *headers, xs_str *body, int b_size)
 /* sends an httpd response */
 {
     xs *proto;
     const xs_str *k;
     const xs_val *v;
 
-    proto = xs_fmt("HTTP/1.1 %d %s", status, status / 100 == 2 ? "OK" : "ERROR");
+    proto = xs_fmt("HTTP/1.1 %d %s", status, status_text);
     fprintf(f, "%s\r\n", proto);
 
     int c = 0;