post.c File Reference

Fun VM opcode snippet: HTTP POST via libcurl (OP_CURL_POST). More...

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Go to the source code of this file.

Functions
	free_value (vurl)
	free_value (vbody)
	if (!url)
	curl_easy_setopt (h, CURLOPT_URL, url)
	curl_easy_setopt (h, CURLOPT_FOLLOWLOCATION, 1L)
	curl_easy_setopt (h, CURLOPT_POST, 1L)
	curl_easy_setopt (h, CURLOPT_POSTFIELDS, body)
	curl_easy_setopt (h, CURLOPT_WRITEFUNCTION, fun_curl_write_cb)
	curl_easy_setopt (h, CURLOPT_WRITEDATA, &buf)
	curl_easy_cleanup (h)
	free (url)
	free (body)
	if (rc !=CURLE_OK)
	if (buf.d) free(buf.d)
	push_value (vm, s)

Variables
case	OP_CURL_POST
Value	vurl = pop_value(vm)
char *	url = value_to_string_alloc(&vurl)
char *	body = value_to_string_alloc(&vbody)
FunCurlBuf	buf = {NULL, 0}
CURL *	h = curl_easy_init()
CURLcode	rc = curl_easy_perform(h)
Value	s = make_string(buf.d ? buf.d : "")
	break

Detailed Description

Fun VM opcode snippet: HTTP POST via libcurl (OP_CURL_POST).

This snippet is included by vm.c and implements the OP_CURL_POST instruction. When FUN_WITH_CURL is enabled, it performs an HTTP POST to the given URL with the provided request body and pushes the response body as a string. If libcurl support is not built in, or an error occurs, an empty string is pushed instead.

Stack behavior:

• Pops: body:string, url:string (values are converted via value_to_string_alloc)
• Pushes: body:string (server response; "" on error or when CURL is disabled)

Pops the POST body and URL, performs an HTTP POST, and pushes the response as a string. Without FUN_WITH_CURL, consumes two values and pushes an empty string.

Error handling:

• If URL conversion fails, the opcode pushes an empty string and discards any converted body.
• Follows redirects (CURLOPT_FOLLOWLOCATION = 1L).
• Sets CURLOPT_POST=1L and CURLOPT_POSTFIELDS to submit the body.

Notes:

• Uses FunCurlBuf and fun_curl_write_cb from the curl extension helpers.
• All temporary allocations (URL, body, response buffer) are freed.

Definition in file post.c.

Function Documentation

curl_easy_cleanup()

curl_easy_cleanup

(

h

)

curl_easy_setopt() [1/6]

curl_easy_setopt	(	h	,
		CURLOPT_FOLLOWLOCATION	,
		1L	)

curl_easy_setopt() [2/6]

curl_easy_setopt	(	h	,
		CURLOPT_POST	,
		1L	)

curl_easy_setopt() [3/6]

curl_easy_setopt	(	h	,
		CURLOPT_POSTFIELDS	,
		body	)

curl_easy_setopt() [4/6]

curl_easy_setopt	(	h	,
		CURLOPT_URL	,
		url	)

curl_easy_setopt() [5/6]

curl_easy_setopt	(	h	,
		CURLOPT_WRITEDATA	,
		&	buf )

curl_easy_setopt() [6/6]

curl_easy_setopt	(	h	,
		CURLOPT_WRITEFUNCTION	,
		fun_curl_write_cb	)

free() [1/2]

free

(

body

)

free() [2/2]

free

(

url

)

free_value() [1/2]

free_value

(

vbody

)

free_value() [2/2]

free_value

(

vurl

)

if() [1/3]

if

(

!

url

)

Definition at line 47 of file post.c.

if() [2/3]

if

(

buf.

d

)

if() [3/3]

if

(

rc !

= CURLE_OK

)

Definition at line 71 of file post.c.

push_value()

push_value	(	vm	,
		s	)

Variable Documentation

body

char* body = value_to_string_alloc(&vbody)

Definition at line 44 of file post.c.

break

break

Definition at line 86 of file post.c.

buf

FunCurlBuf buf = {NULL, 0}

Definition at line 53 of file post.c.

h

CURL* h = curl_easy_init()

Definition at line 54 of file post.c.

OP_CURL_POST

case OP_CURL_POST

Definition at line 39 of file post.c.

rc

CURLcode rc = curl_easy_perform(h)

Definition at line 67 of file post.c.

s

Value s = make_string(buf.d ? buf.d : "")

Definition at line 76 of file post.c.

url

char* url = value_to_string_alloc(&vurl)

Definition at line 43 of file post.c.

vurl

Value vurl = pop_value(vm)

Definition at line 42 of file post.c.