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// jurl.c - a curl_easy minimal wrapper for janet
#include "jurl.h"
static int jurl_gc(void *p, size_t s) {
(void) s;
jurl_handle *jurl = (jurl_handle*)p;
if (jurl->handle) curl_easy_cleanup(jurl->handle);
while (jurl->cleanup) {
struct jurl_cleanup *cur = jurl->cleanup;
switch (cur->type) {
case JURL_CLEANUP_TYPE_SLIST:
curl_slist_free_all(cur->slist);
break;
default:
janet_panic("unknown type of cleanup data in jurl_gc");
}
jurl->cleanup = cur->next;
free(cur);
}
return 0;
}
static JanetMethod jurl_methods[] = {
{"reset", jurl_reset},
{"dup", jurl_dup},
{"perform", jurl_perform},
{"getinfo", jurl_getinfo},
{"setopt", jurl_setopt},
{NULL, NULL},
};
// methods + getinfo
static int jurl_get(void *p, Janet key, Janet *out) {
jurl_handle *jurl = (jurl_handle*)p;
if (!janet_checktype(key, JANET_KEYWORD)) {
return 0;
}
// is it a method?
if (janet_getmethod(janet_unwrap_keyword(key), jurl_methods, out)) {
return 1;
}
// try to do a getinfo
Janet argv[2] = { janet_wrap_abstract(jurl),
key, };
*out = jurl_getinfo(2, argv);
return 1;
}
// setopt
static void jurl_put(void *data, Janet key, Janet value) {
jurl_handle *jurl = (jurl_handle*)data;
Janet argv[3] = { janet_wrap_abstract(jurl),
key, value, };
Janet out = jurl_setopt(3, argv);
if (!janet_keyeq(out, "ok")) {
janet_panic("jurl_put failed");
}
}
static const JanetAbstractType jurl_type = {
"jurl", // name
jurl_gc, // gc
NULL, // gcmark
jurl_get, // get
jurl_put, // put
JANET_ATEND_PUT
};
jurl_handle *janet_getjurl(Janet *argv, int32_t n) {
return (jurl_handle*)janet_getabstract(argv, n, &jurl_type);
}
// this function plays fast and loose and I hope the gc doesn't kill me for it
// anyway, it goes like so:
// (wrap-error :ok something) -> [:ok something]
// (wrap-error :err something) -> [:err "explanation of :err"]
JANET_CFUN(jurl_wrap_error) {
janet_fixarity(argc, 2);
CURLcode code;
if (janet_checktype(argv[0], JANET_NUMBER)) {
argv[0] = jurl_geterror(janet_getinteger(argv, 0));
}
if (!janet_checktype(argv[0], JANET_KEYWORD)) {
janet_panicf("jurl_wrap_error: expected number or keyword, got %T", janet_type(argv[0]));
}
if (!janet_keyeq(argv[0], "ok")) {
// will this break one day?
// find out next time!
argv[1] = jurl_strerror(1, argv);
}
return janet_wrap_tuple(janet_tuple_n(argv, 2));
}
JANET_CFUN(jurl_escape) {
janet_fixarity(argc, 1);
JanetByteView b = janet_getbytes(argv, 0);
CURL* curl;
#if !CURL_AT_LEAST_VERSION(7,82,0)
curl = curl_easy_init();
#endif
char *s = curl_easy_escape(curl, (const char*)b.bytes, b.len);
Janet out = janet_cstringv(s);
curl_free(s);
#if !CURL_AT_LEAST_VERSION(7,82,0)
curl_easy_cleanup(curl);
#endif
return out;
}
JANET_CFUN(jurl_unescape) {
janet_fixarity(argc, 1);
JanetByteView b = janet_getbytes(argv, 0);
CURL *curl;
#if !CURL_AT_LEAST_VERSION(7,82,0)
curl = curl_easy_init();
#endif
int len;
char *s = curl_easy_unescape(curl, (const char*)b.bytes, b.len, &len);
Janet out = janet_stringv((const uint8_t*)s, len);
curl_free(s);
#if !CURL_AT_LEAST_VERSION(7,82,0)
curl_easy_cleanup(curl);
#endif
return out;
}
JANET_CFUN(jurl_new) {
janet_fixarity(argc, 0);
jurl_handle *jurl = (jurl_handle*)janet_abstract(&jurl_type, sizeof(jurl_handle));
jurl->handle = curl_easy_init();
return janet_wrap_abstract(jurl);
}
struct jurl_cleanup *register_cleanup(jurl_handle *jurl, enum jurl_cleanup_type type) {
struct jurl_cleanup *out = malloc(sizeof(struct jurl_cleanup));
out->next = jurl->cleanup;
jurl->cleanup = out;
out->type = type;
return out;
}
JANET_CFUN(jurl_reset) {
janet_fixarity(argc, 1);
jurl_handle *jurl = janet_getjurl(argv, 0);
curl_easy_reset(jurl->handle);
return janet_wrap_abstract(jurl);
}
JANET_CFUN(jurl_dup) {
janet_fixarity(argc, 1);
jurl_handle *jurl = janet_getjurl(argv, 0);
jurl_handle *newj = (jurl_handle*)janet_abstract(&jurl_type, sizeof(jurl));
newj->handle = curl_easy_duphandle(jurl->handle);
return janet_wrap_abstract(newj);
}
JANET_CFUN(jurl_global_init) {
long flags;
if (argc == 0) {
flags = CURL_GLOBAL_ALL;
goto global_init_ret;
}
for (size_t i = 0; i < argc; i++) {
Janet kw = argv[i];
if(!janet_checktype(kw, JANET_KEYWORD)) {
janet_panicf(
"jurl_global_init: received a non-keyword argument of type %T: %v",
janet_type(kw), kw);
}
if (janet_keyeq(kw, "all")) {
flags |= CURL_GLOBAL_ALL;
} else if (janet_keyeq(kw, "ssl")) {
flags |= CURL_GLOBAL_SSL;
} else if (janet_keyeq(kw, "win32")) {
flags |= CURL_GLOBAL_WIN32;
} else if (janet_keyeq(kw, "nothing")) {
flags |= CURL_GLOBAL_NOTHING;
} else if (janet_keyeq(kw, "ack-eintr")) {
flags |= CURL_GLOBAL_ACK_EINTR;
} else {
janet_panicf("jurl_global_init: unknown keyword %v", kw);
}
}
global_init_ret:
return jurl_geterror(curl_global_init(flags));
}
JANET_CFUN(jurl_global_cleanup) {
curl_global_cleanup();
return janet_wrap_nil();
}
JANET_CFUN(jurl_perform) {
janet_fixarity(argc, 1);
jurl_handle *jurl = (jurl_handle*)janet_getjurl(argv, 0);
return jurl_geterror(curl_easy_perform(jurl->handle));
}
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