Commit 91b2184e authored by Jiri Hruska's avatar Jiri Hruska Committed by Steve Holme
Browse files

imap: Added a helper function for upcoming untagged response filtering 

RFC 3501 states that "the client MUST be prepared to accept any response
at all times" yet we assume anything received with "* " at the beginning
is the untagged response we want.

Introduced a helper function that checks whether the input looks like a
response to specified command, so that we may filter the ones we are
interested in according to the current state.
parent 1ffdc505

lib/imap.c

+35 −0
Original line number Diff line number Diff line
@@ -323,6 +323,41 @@ static char* imap_atom(const char* str) 
  return newstr;

}



/* Determines whether the untagged response is related to a specified

   command by checking if it is in format "* <command-name> ..." or

   "* <number> <command-name> ...". The "* " marker is assumed to have

   already been checked by the caller. */

static bool imap_matchresp(const char *line, size_t len, const char *cmd)

{

  const char *end = line + len;

  size_t cmd_len = strlen(cmd);



  /* Skip the untagged response marker */

  line += 2;



  /* Do we have a number after the marker? */

  if(line < end && ISDIGIT(*line)) {

    /* Skip the number */

    do

      line++;

    while(line < end && ISDIGIT(*line));



    /* Do we have the space character? */

    if(line == end || *line != ' ')

      return FALSE;



    line++;

  }



  /* Does the command name match and is it followed by a space character or at

     the end of line? */

  if(line + cmd_len <= end && Curl_raw_nequal(line, cmd, cmd_len) &&

     (line[cmd_len] == ' ' || line + cmd_len == end))

    return TRUE;



  return FALSE;

}



/* Function that checks whether the given string is a valid tagged, untagged

   or continuation response which can be processed by the response handler. */

static bool imap_endofresp(struct connectdata *conn, char *line, size_t len,