# [PATCH] http: prevent segfault during curl handle reuse 1 messages from 2006-05-31 to 2006-05-31. Participants: Nick Hengeveld. Thread: https://gitlist.dev/t/4363 ## Nick Hengeveld, 2006-05-31 23:25 Subject: [PATCH] http: prevent segfault during curl handle reuse Message-ID: <20060531232503.GC12261@reactrix.com> URL: https://gitlist.dev/e/20060531232503.GC12261%40reactrix.com ``` If a curl handle is configured with special options, they may reference information that is freed after the request is complete which can cause a segfault if the curl handle is reused for a different type of request. This patch resets these options to a safe state when a transfer slot is assigned to a new request. Signed-off-by: Nick Hengeveld --- http.c | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/http.c b/http.c index 0cb42a8..146cf7b 100644 --- a/http.c +++ b/http.c @@ -25,7 +25,6 @@ long curl_low_speed_limit = -1; long curl_low_speed_time = -1; struct curl_slist *pragma_header; -struct curl_slist *no_range_header; struct active_request_slot *active_queue_head = NULL; @@ -208,7 +207,6 @@ void http_init(void) curl_global_init(CURL_GLOBAL_ALL); pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); - no_range_header = curl_slist_append(no_range_header, "Range:"); #ifdef USE_CURL_MULTI { @@ -344,9 +342,14 @@ #endif slot->finished = NULL; slot->callback_data = NULL; slot->callback_func = NULL; + curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, NULL); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); - curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_range_header); curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); + curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); + curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); + curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); + curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); + curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); return slot; } -- 1.3.3.g2186-dirty ```