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options: API for meta-data about easy options

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const struct curl_easyoption *curl_easy_option_by_name(const char *name);

 const struct curl_easyoption *curl_easy_option_by_id (CURLoption id);

 const struct curl_easyoption *
 curl_easy_option_next(const struct curl_easyoption *prev);

The purpose is to provide detailed enough information to allow for
example libcurl bindings to get option information at run-time about
what easy options that exist and what arguments they expect.

Assisted-by: Jeroen Ooms
Closes #5365
This commit is contained in:
Daniel Stenberg 2020-08-26 08:30:38 +02:00
parent 9ee5701f12
commit 6ebe63fac2
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GPG key ID: 5CC908FDB71E12C2
22 changed files with 1019 additions and 58 deletions
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6
lib/setopt.c
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@ -720,6 +720,9 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
argptr = (char *)va_arg(param, void *);
if(argptr) {
struct curl_slist *cl;
/* general protection against mistakes and abuse */
if(strlen(argptr) > CURL_MAX_INPUT_LENGTH)
return CURLE_BAD_FUNCTION_ARGUMENT;
/* append the cookie file name to the list of file names, and deal with
them later */
cl = curl_slist_append(data->change.cookielist, argptr);
@ -804,6 +807,9 @@ CURLcode Curl_vsetopt(struct Curl_easy *data, CURLoption option, va_list param)
/* if cookie engine was not running, activate it */
data->cookies = Curl_cookie_init(data, NULL, NULL, TRUE);
/* general protection against mistakes and abuse */
if(strlen(argptr) > CURL_MAX_INPUT_LENGTH)
return CURLE_BAD_FUNCTION_ARGUMENT;
argptr = strdup(argptr);
if(!argptr || !data->cookies) {
result = CURLE_OUT_OF_MEMORY;