libpurple/protocols/zephyr/ZPeekPkt.c

   1 /* This file is part of the Project Athena Zephyr Notification System.
   2  * It contains source for ZPeekPacket function.
   3  *
   4  *      Created by:     Robert French
   5  *
   6  *      Copyright (c) 1987 by the Massachusetts Institute of Technology.
   7  *      For copying and distribution information, see the file
   8  *      "mit-copyright.h".
   9  */
  10
  11 #include "internal.h"
  12
  13 Code_t ZPeekPacket(buffer, ret_len, from)
  14     char **buffer;
  15     int *ret_len;
  16     struct sockaddr_in *from;
  17 {
  18     Code_t retval;
  19     struct _Z_InputQ *nextq;
  20
  21     if ((retval = Z_WaitForComplete()) != ZERR_NONE)
  22         return (retval);
  23
  24     nextq =Z_GetFirstComplete();
  25
  26     *ret_len = nextq->packet_len;
  27
  28     if (!(*buffer = (char *) malloc((unsigned) *ret_len)))
  29         return (ENOMEM);
  30
  31     (void) memcpy(*buffer, nextq->packet, *ret_len);
  32
  33     if (from)
  34         *from = nextq->from;
  35
  36     return (ZERR_NONE);
  37 }