From 25575475bf9a601ad7259680928337564511c47f Mon Sep 17 00:00:00 2001
From: Alexander Vdolainen <alex@vapaa.xyz>
Date: Thu, 18 Mar 2021 17:25:17 +0200
Subject: [PATCH] ejabberd auth message function;

---
 src/eport.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 51 insertions(+), 1 deletion(-)

diff --git a/src/eport.c b/src/eport.c
index cfe507a..e8ba603 100644
--- a/src/eport.c
+++ b/src/eport.c
@@ -23,6 +23,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <sys/uio.h>
+#include <string.h>
 
 #include <ejabbermsg.h>
 
@@ -77,5 +78,54 @@ ssize_t eport_write(FILE *stream, char *buffer, size_t buffer_size)
 int eport_ejabberd_msgread(char *buffer, size_t buffer_size,
                            struct ejabber_msg *m)
 {
-  return 0;
+  char *orig_buffer = buffer;
+  unsigned long hash = 5381;
+  int c, t = 0;
+
+  if(!buffer || buffer_size <= 0) {
+  ieinval:
+    errno = EINVAL;
+    return -1;
+  }
+  if(!m) goto ieinval;
+
+  /* calc hash for first message word till the end or till the ':' */
+  while(((c = *buffer++) != '\0') || (*buffer == ':'))
+    hash = ((hash << 5) + hash) + c;
+
+  switch(hash) {
+  case AUTH_HASH: m->aev = EJA_AUTH; break;
+  case ISUSER_HASH: m->aev = EJA_ISUSER; break;
+  case SETPASS_HASH: m->aev = EJA_SETPASS; break;
+  case TRYREGISTER_HASH: m->aev = EJA_TRYREGISTER; break;
+  case REMOVEUSER_HASH: m->aev = EJA_REMOVEUSER; break;
+  case REMOVEUSER3_HASH: m->aev = EJA_REMOVEUSER3; break;
+  default:
+    errno = EINVAL;
+    return -1;
+  }
+  /* initialize other things in message */
+  m->msg_data = orig_buffer;
+  m->user = m->domain = m->password = NULL;
+  /* shift a pointer */
+  c = *buffer++; orig_buffer = buffer;
+
+  while((buffer = strchr(buffer, ':')) != NULL) {
+    switch(t) {
+    case 0: m->user = orig_buffer; break;
+    case 1: m->domain = orig_buffer; break;
+    default:
+      errno = EINVAL;
+      return -1;
+    }
+    *buffer = '\0'; c = *buffer++;
+    orig_buffer = buffer; t++;
+  }
+  if(*orig_buffer != '\0') {
+    if(t > 1) m->password = orig_buffer;
+    else m->domain = orig_buffer;
+    t++;
+  }
+
+  return t;
 }