auth_plain.c

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#include "config.h"
#include "private.h"
#include "mutt/lib.h"
#include "conn/lib.h"
#include "adata.h"
#include "auth.h"
#include "mutt_logging.h"
 
enum ImapAuthRes imap_auth_plain(struct ImapAccountData *adata, const char *method)
{
  int rc = IMAP_RES_CONTINUE;
  enum ImapAuthRes res = IMAP_AUTH_SUCCESS;
  static const char auth_plain_cmd[] = "AUTHENTICATE PLAIN";
  char buf[256] = { 0 };
 
  if (mutt_account_getuser(&adata->conn->account) < 0)
    return IMAP_AUTH_FAILURE;
  if (mutt_account_getpass(&adata->conn->account) < 0)
    return IMAP_AUTH_FAILURE;
 
  mutt_message(_("Logging in..."));
 
  /* Prepare full AUTHENTICATE PLAIN message */
  mutt_sasl_plain_msg(buf, sizeof(buf), auth_plain_cmd, adata->conn->account.user,
                      adata->conn->account.user, adata->conn->account.pass);
 
  if (adata->capabilities & IMAP_CAP_SASL_IR)
  {
    imap_cmd_start(adata, buf);
  }
  else
  {
    /* Split the message so we send AUTHENTICATE PLAIN first, and the
     * credentials after the first command continuation request */
    buf[sizeof(auth_plain_cmd) - 1] = '\0';
    imap_cmd_start(adata, buf);
    while (rc == IMAP_RES_CONTINUE)
    {
      rc = imap_cmd_step(adata);
    }
    if (rc == IMAP_RES_RESPOND)
    {
      mutt_str_cat(buf + sizeof(auth_plain_cmd),
                   sizeof(buf) - sizeof(auth_plain_cmd), "\r\n");
      mutt_socket_send(adata->conn, buf + sizeof(auth_plain_cmd));
      rc = IMAP_RES_CONTINUE;
    }
  }
 
  while (rc == IMAP_RES_CONTINUE)
  {
    rc = imap_cmd_step(adata);
  }
 
  if (rc == IMAP_RES_BAD)
  {
    res = IMAP_AUTH_UNAVAIL;
  }
  else if (rc == IMAP_RES_NO)
  {
    mutt_error(_("Login failed"));
    res = IMAP_AUTH_FAILURE;
  }
 
  mutt_clear_error();
  return res;
}