From 511cfd3bffa685fda0e7c25bfa08082aa0de3a30 Mon Sep 17 00:00:00 2001 From: Christian Couder Date: Mon, 16 May 2022 10:38:51 +0200 Subject: http: add custom hostname to IP address resolutions Libcurl has a CURLOPT_RESOLVE easy option that allows the result of hostname resolution in the following format to be passed: [+]HOST:PORT:ADDRESS[,ADDRESS] This way, redirects and everything operating against the HOST+PORT will use the provided ADDRESS(s). The following format is also allowed to stop using hostname resolutions that have already been passed: -HOST:PORT See https://curl.se/libcurl/c/CURLOPT_RESOLVE.html for more details. Let's add a corresponding "http.curloptResolve" config option that takes advantage of CURLOPT_RESOLVE. Each value configured for the "http.curloptResolve" key is passed "as is" to libcurl through CURLOPT_RESOLVE, so it should be in one of the above 2 formats. This keeps the implementation simple and makes us consistent with libcurl's CURLOPT_RESOLVE, and with curl's corresponding `--resolve` command line option. The implementation uses CURLOPT_RESOLVE only in get_active_slot() which is called by all the HTTP request sending functions. Signed-off-by: Christian Couder Signed-off-by: Junio C Hamano --- http.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'http.c') diff --git a/http.c b/http.c index 229da4d148..8beacb95cc 100644 --- a/http.c +++ b/http.c @@ -128,6 +128,8 @@ static struct curl_slist *pragma_header; static struct curl_slist *no_pragma_header; static struct string_list extra_http_headers = STRING_LIST_INIT_DUP; +static struct curl_slist *host_resolutions; + static struct active_request_slot *active_queue_head; static char *cached_accept_language; @@ -393,6 +395,18 @@ static int http_options(const char *var, const char *value, void *cb) return 0; } + if (!strcmp("http.curloptresolve", var)) { + if (!value) { + return config_error_nonbool(var); + } else if (!*value) { + curl_slist_free_all(host_resolutions); + host_resolutions = NULL; + } else { + host_resolutions = curl_slist_append(host_resolutions, value); + } + return 0; + } + if (!strcmp("http.followredirects", var)) { if (value && !strcmp(value, "initial")) http_follow_config = HTTP_FOLLOW_INITIAL; @@ -1131,6 +1145,9 @@ void http_cleanup(void) curl_slist_free_all(no_pragma_header); no_pragma_header = NULL; + curl_slist_free_all(host_resolutions); + host_resolutions = NULL; + if (curl_http_proxy) { free((void *)curl_http_proxy); curl_http_proxy = NULL; @@ -1211,6 +1228,7 @@ struct active_request_slot *get_active_slot(void) if (curl_save_cookies) curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file); curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); + curl_easy_setopt(slot->curl, CURLOPT_RESOLVE, host_resolutions); 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); -- cgit v1.2.3