From 9753c6bec51faacd5f1783caaa00cb5f0e0fb8df Mon Sep 17 00:00:00 2001 From: Yang Tse Date: Wed, 4 Apr 2012 17:30:12 +0200 Subject: ftp.c: ftplistparser related OOM handling fix --- lib/ftp.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) (limited to 'lib/ftp.c') diff --git a/lib/ftp.c b/lib/ftp.c index f2583d036..3a494535d 100644 --- a/lib/ftp.c +++ b/lib/ftp.c @@ -3824,15 +3824,17 @@ static CURLcode init_wc_data(struct connectdata *conn) resources for wildcard transfer */ /* allocate ftp protocol specific temporary wildcard data */ - ftp_tmp = malloc(sizeof(struct ftp_wc_tmpdata)); + ftp_tmp = calloc(1, sizeof(struct ftp_wc_tmpdata)); if(!ftp_tmp) { + Curl_safefree(wildcard->pattern); return CURLE_OUT_OF_MEMORY; } /* INITIALIZE parselist structure */ ftp_tmp->parser = Curl_ftp_parselist_data_alloc(); if(!ftp_tmp->parser) { - free(ftp_tmp); + Curl_safefree(wildcard->pattern); + Curl_safefree(ftp_tmp); return CURLE_OUT_OF_MEMORY; } @@ -3846,9 +3848,22 @@ static CURLcode init_wc_data(struct connectdata *conn) /* try to parse ftp url */ ret = ftp_parse_url_path(conn); if(ret) { + Curl_safefree(wildcard->pattern); + wildcard->tmp_dtor(wildcard->tmp); + wildcard->tmp_dtor = ZERO_NULL; + wildcard->tmp = NULL; return ret; } + wildcard->path = strdup(conn->data->state.path); + if(!wildcard->path) { + Curl_safefree(wildcard->pattern); + wildcard->tmp_dtor(wildcard->tmp); + wildcard->tmp_dtor = ZERO_NULL; + wildcard->tmp = NULL; + return CURLE_OUT_OF_MEMORY; + } + /* backup old write_function */ ftp_tmp->backup.write_function = conn->data->set.fwrite_func; /* parsing write function */ @@ -3858,11 +3873,6 @@ static CURLcode init_wc_data(struct connectdata *conn) /* let the writefunc callback know what curl pointer is working with */ conn->data->set.out = conn; - wildcard->path = strdup(conn->data->state.path); - if(!wildcard->path) { - return CURLE_OUT_OF_MEMORY; - } - infof(conn->data, "Wildcard - Parsing started\n"); return CURLE_OK; } @@ -3889,6 +3899,8 @@ static CURLcode wc_statemach(struct connectdata *conn) struct ftp_wc_tmpdata *ftp_tmp = wildcard->tmp; conn->data->set.fwrite_func = ftp_tmp->backup.write_function; conn->data->set.out = ftp_tmp->backup.file_descriptor; + ftp_tmp->backup.write_function = ZERO_NULL; + ftp_tmp->backup.file_descriptor = NULL; wildcard->state = CURLWC_DOWNLOADING; if(Curl_ftp_parselist_geterror(ftp_tmp->parser)) { -- cgit v1.2.3