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#include <sys/types.h>
#include <sys/stat.h>

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

#include <mailutils/address.h>
#include <mailutils/errno.h>
#include <mailutils/mailer.h>
#include <mailutils/message.h>
#include <mailutils/registrar.h>
#include <mailutils/stream.h>

#define C(X) {int e; if((e = X) != 0) { \
  fprintf(stderr, "%s failed: %s\n", #X, mu_errstring(e)); \
  exit(1); } }

const char USAGE[] =
  "usage: mailer [-hd] [-m mailer] [-f from] [to]..."
  ;
const char HELP[] =
  "  -h    print this helpful message\n"
  "  -m    a mailer URL (default is \"sendmail:\")\n"
  "  -f    the envelope from address (default is from user environment)\n"
  "  to    a list of envelope to addresses (default is from message)\n"
  "\n"
  "An RFC2822 formatted message is read from stdin and delivered using\n"
  "the mailer.\n"
  ;

int
main (int argc, char *argv[])
{
  int       opt;
  int       optdebug  = 0;
  char*     optmailer = "sendmail:";
  char*     optfrom   = 0;

  stream_t  in     = 0;
  message_t msg    = 0;
  mailer_t  mailer = 0;
  address_t from   = 0;
  address_t to     = 0;

  while((opt = getopt(argc, argv, "hdm:f:")) != -1)
  {
    switch(opt)
    {
      case 'h':
	printf("%s\n%s", USAGE, HELP);
	return 0;
      case 'd':
	optdebug++;
	break;
      case 'm':
	optmailer = optarg;
	break;
      case 'f':
	optfrom = optarg;
	break;
      default:
	fprintf(stderr, "%s\n", USAGE);
	break;
    }
  }

  /* Register mailers. */
  {
    list_t bookie;
    registrar_get_list (&bookie);
    C( list_append (bookie, smtp_record) )
    C( list_append (bookie, sendmail_record) )
  }

  if(optfrom)
  {
    C( address_create(&from, optfrom) )
  }

  if(argv[optind])
  {
    char** av = argv + optind;

    C( address_createv(&to, (const char**) av, -1) )
  }

  C( stdio_stream_create(&in, stdin, 0) )

  C( stream_open(in) )

  C( message_create (&msg, NULL) )

  C( message_set_stream(msg, in, NULL) )

  C( mailer_create(&mailer, optmailer) )

  if(optdebug)
  {
    mu_debug_t debug;
    mailer_get_debug (mailer, &debug);
    mu_debug_set_level (debug, MU_DEBUG_TRACE | MU_DEBUG_PROT);
  }

  C( mailer_open(mailer, 0) )

  C( mailer_send_message(mailer, msg, from, to) )

  return 0;
}

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