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shrub/vere/http.c

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/* v/http.c
**
*/
#define _WITH_DPRINTF
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <setjmp.h>
#include <gmp.h>
#include <stdint.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <uv.h>
#include <errno.h>
#include <curses.h>
#include <termios.h>
#include <term.h>
#include "../outside/jhttp/http_parser.h" // Joyent HTTP
#include "all.h"
#include "vere/vere.h"
static void _http_request(u3_hreq* req_u);
static void _http_request_dead(u3_hreq* req_u);
static void _http_conn_dead(u3_hcon *hon_u);
static u3_hreq* _http_req_new(u3_hcon* hon_u);
/* _http_alloc(): libuv buffer allocator.
*/
static void
_http_alloc(uv_handle_t* had_u,
size_t len_i,
uv_buf_t* buf
)
{
void* ptr_v = c3_malloc(len_i);
*buf = uv_buf_init(ptr_v, len_i);
}
/* _http_bod(): create a data buffer.
*/
static u3_hbod*
_http_bod(c3_w len_w, const c3_y* hun_y)
{
u3_hbod* bod_u = c3_malloc(len_w + sizeof(*bod_u));
bod_u->len_w = len_w;
memcpy(bod_u->hun_y, hun_y, len_w);
bod_u->nex_u = 0;
return bod_u;
}
/* _http_bud(): create a header buffer. Not null-terminated!
*/
static u3_hbod*
_http_bud(c3_c* nam_c, c3_c* val_c)
{
c3_w lnm_w = strlen(nam_c);
c3_w lvl_w = strlen(val_c);
c3_w len_w = lnm_w + 2 + lvl_w + 2;
u3_hbod* bod_u = c3_malloc(len_w + sizeof(*bod_u));
strncpy((c3_c *)bod_u->hun_y, nam_c, lnm_w);
strncpy((c3_c *)bod_u->hun_y + lnm_w, ": ", 2);
strncpy((c3_c *)bod_u->hun_y + lnm_w + 2, val_c, lvl_w);
strncpy((c3_c *)bod_u->hun_y + lnm_w + 2 + lvl_w, "\r\n", 2);
bod_u->len_w = len_w;
bod_u->nex_u = 0;
return bod_u;
}
/* _http_heds_free(): free header structure.
*/
static void
_http_heds_free(u3_hhed* hed_u)
{
while ( hed_u ) {
u3_hhed* nex_u = hed_u->nex_u;
if ( hed_u->nam_c ) free(hed_u->nam_c);
if ( hed_u->val_c ) free(hed_u->val_c);
free(hed_u);
hed_u = nex_u;
}
}
/* _http_bods_free(): free body structure.
*/
static void
_http_bods_free(u3_hbod* bod_u)
{
while ( bod_u ) {
u3_hbod* nex_u = bod_u->nex_u;
free(bod_u);
bod_u = nex_u;
}
}
/* _http_req_free(): free http request.
*/
static void
_http_req_free(u3_hreq* req_u)
{
if ( req_u ) {
if ( req_u->url_c ) {
free(req_u->url_c);
}
_http_heds_free(req_u->hed_u);
_http_bods_free(req_u->bod_u);
_http_bods_free(req_u->bur_u);
free(req_u);
}
}
/* An unusual lameness in libuv.
*/
typedef struct {
uv_write_t wri_u;
c3_y* buf_y;
} _u3_write_t;
/* _http_write_cb(): general write callback.
*/
static void
_http_write_cb(uv_write_t* wri_u, c3_i sas_i)
{
_u3_write_t* ruq_u = (void *)wri_u;
if ( (u3C.wag_w & u3o_verbose) && 0 != sas_i && UV__EPIPE != sas_i ) {
uL(fprintf(uH, "http: write: ERROR %d\n", sas_i));
uL(fprintf(uH, " (%s)\n", uv_strerror(sas_i)));
}
free(ruq_u->buf_y);
free(ruq_u);
}
/* _http_respond_buf(): write back to http.
*/
static void
_http_respond_buf(u3_hreq* req_u, uv_buf_t buf_u)
{
_u3_write_t* ruq_u;
// don't respond to a dead connection
if ( uv_is_closing((uv_handle_t*) &(req_u->hon_u->wax_u)) ) {
free(buf_u.base);
return;
}
ruq_u = (_u3_write_t*) c3_malloc(sizeof(_u3_write_t));
ruq_u->buf_y = (c3_y*)buf_u.base;
if ( 0 != uv_write(&ruq_u->wri_u,
(uv_stream_t*)&(req_u->hon_u->wax_u),
&buf_u, 1,
_http_write_cb) )
{
uL(fprintf(uH, "respond: ERROR\n"));
_http_conn_dead(req_u->hon_u);
}
}
/* _http_respond_body(): attach response body.
*/
static void
_http_send_body(u3_hreq *req_u,
u3_hbod *rub_u)
{
uv_buf_t buf_u;
// XX extra copy here due to old code. Use hbod as base directly.
//
{
c3_y* buf_y = c3_malloc(rub_u->len_w);
memcpy(buf_y, rub_u->hun_y, rub_u->len_w);
buf_u = uv_buf_init((c3_c*)buf_y, rub_u->len_w);
}
_http_respond_buf(req_u, buf_u);
}
/* _http_respond_body(): attach response body.
*/
static void
_http_respond_body(u3_hreq *req_u,
u3_hbod *rub_u)
{
if ( !(req_u->rub_u) ) {
req_u->rub_u = req_u->bur_u = rub_u;
}
else {
req_u->bur_u->nex_u = rub_u;
req_u->bur_u = rub_u;
}
}
/* _http_respond_str(): attach output string.
*/
static void
_http_respond_str(u3_hreq* req_u,
const c3_c* str_c)
{
_http_respond_body(req_u, _http_bod(strlen(str_c), (const c3_y*)str_c));
}
/* _http_respond_headers(): attach output headers.
*/
static void
_http_respond_headers(u3_hreq* req_u,
u3_hhed* hed_u)
{
while ( hed_u ) {
_http_respond_body(req_u, _http_bud(hed_u->nam_c, hed_u->val_c));
hed_u = hed_u->nex_u;
}
}
/* _http_respond_request(): attach response to request, then free it.
*/
static void
_http_respond_request(u3_hreq* req_u,
u3_hrep* rep_u)
{
c3_c buf_c[81];
snprintf(buf_c, 81, "HTTP/1.1 %d %s\r\n",
rep_u->sas_w,
(rep_u->sas_w < 200) ? "Weird" :
(rep_u->sas_w < 300) ? "OK" :
(rep_u->sas_w < 400) ? "Moved" :
(rep_u->sas_w < 500) ? "Missing" : "Hosed");
_http_respond_str(req_u, buf_c);
// printf("attached response status %d\n", rep_u->sas_w);
_http_respond_headers(req_u, rep_u->hed_u);
_http_heds_free(rep_u->hed_u);
// Why is this necessary? Why we can't send a naked error? Waah.
//
if ( !rep_u->bod_u ) {
snprintf(buf_c, 81, "HTTP error %d.\r\n", rep_u->sas_w);
rep_u->bod_u = _http_bod(strlen(buf_c), (c3_y*) buf_c);
}
{
snprintf(buf_c, 81, "content-length: %u\r\n", rep_u->bod_u->len_w);
_http_respond_str(req_u, buf_c);
_http_respond_str(req_u, "\r\n");
_http_respond_body(req_u, rep_u->bod_u);
}
free(rep_u);
c3_assert(c3n == req_u->end);
req_u->end = c3y;
}
/* _http_conn_free_early(): free http connection on failure.
*/
static void
_http_conn_free_early(uv_handle_t* han_t)
{
u3_hcon* hon_u = (void*) han_t;
free(hon_u);
}
/* _http_conn_free(): free http connection on close.
*/
static void
_http_conn_free(uv_handle_t* han_t)
{
u3_hcon* hon_u = (void*) han_t;
{
struct _u3_http *htp_u = hon_u->htp_u;
if ( htp_u->hon_u == hon_u ) {
htp_u->hon_u = hon_u->nex_u;
}
else {
u3_hcon *pre_u = htp_u->hon_u;
// XX glories of linear search
//
while ( pre_u ) {
if ( pre_u->nex_u == hon_u ) {
pre_u->nex_u = hon_u->nex_u;
}
else pre_u = pre_u->nex_u;
}
}
}
while ( 0 != hon_u->req_u ) {
u3_hreq* req_u = hon_u->req_u;
u3_hreq* nex_u = req_u->nex_u;
_http_request_dead(req_u);
_http_req_free(req_u);
hon_u->req_u = nex_u;
}
free(hon_u->par_u);
free(hon_u);
}
/* _http_conn_dead(): free http connection, close fd.
*/
static void
_http_conn_dead(u3_hcon *hon_u)
{
// uL(fprintf(uH, "connection dead: %d\n", hon_u->coq_l));
uv_read_stop((uv_stream_t*) &(hon_u->wax_u));
uv_close((uv_handle_t*) &(hon_u->wax_u), _http_conn_free);
}
#if 0
/* _http_req_dump(): dump complete http request.
*/
static void
_http_req_dump(u3_hreq* req_u)
{
c3_c* mets[] = { "delete", "get", "head", "post", "put", "other" };
printf("%s %s\n", mets[req_u->met_e],
req_u->url_c ? req_u->url_c : "(null)");
{
u3_hhed* hed_u = req_u->hed_u;
while ( hed_u ) {
printf("%s: %s\r\n", hed_u->nam_c, hed_u->val_c);
hed_u = hed_u->nex_u;
}
}
{
u3_hbod* bod_u = req_u->bod_u;
c3_w bod_w = 0;
while ( bod_u ) {
bod_w += bod_u->len_w;
bod_u = bod_u->nex_u;
}
printf("body: %d bytes\r\n", bod_w);
}
}
#endif
/* _http_message_begin(): jhttp callback
*/
static c3_i
_http_message_begin(http_parser* par_u)
{
u3_hcon* hon_u = par_u->data;
c3_assert( !hon_u->ruc_u );
hon_u->ruc_u = _http_req_new(hon_u);
return 0;
}
/* _http_more(): extend string with new data.
*/
static c3_c*
_http_more(c3_c* str_c, const c3_c* buf_c, size_t siz_i)
{
if ( !str_c ) {
str_c = c3_malloc(siz_i + 1);
memcpy(str_c, buf_c, siz_i);
str_c[siz_i] = 0;
}
else {
c3_w len_w = strlen(str_c);
str_c = realloc(str_c, len_w + siz_i + 1);
memcpy(str_c + len_w, buf_c, siz_i);
str_c[len_w + siz_i] = 0;
}
return str_c;
}
/* _http_url(): jhttp callback
*/
static c3_i
_http_url(http_parser* par_u, const c3_c* buf_c, size_t siz_i)
{
u3_hcon *hon_u = par_u->data;
hon_u->ruc_u->url_c = _http_more(hon_u->ruc_u->url_c, buf_c, siz_i);
return 0;
}
/* _http_header_field(): jhttp callback
*/
static c3_i
_http_header_field(http_parser* par_u, const c3_c* buf_c, size_t siz_i)
{
u3_hreq *req_u = ((u3_hcon*)par_u->data)->ruc_u;
switch ( req_u->rat_e ) {
case u3_hreq_non:
case u3_hreq_val: {
u3_hhed* hed_u = c3_malloc(sizeof(*hed_u));
hed_u->nam_c = _http_more(0, buf_c, siz_i);
hed_u->val_c = 0;
hed_u->nex_u = req_u->hed_u;
req_u->hed_u = hed_u;
break;
}
case u3_hreq_nam: {
req_u->hed_u->nam_c = _http_more(req_u->hed_u->nam_c, buf_c, siz_i);
break;
}
}
req_u->rat_e = u3_hreq_nam;
return 0;
}
/* _http_header_value(): jhttp callback
*/
static c3_i
_http_header_value(http_parser* par_u, const c3_c* buf_c, size_t siz_i)
{
u3_hreq *req_u = ((u3_hcon*)par_u->data)->ruc_u;
switch ( req_u->rat_e ) {
case u3_hreq_non: fprintf(stderr, "http: odd value\r\n"); return 1;
case u3_hreq_nam: {
req_u->hed_u->val_c = _http_more(0, buf_c, siz_i);
break;
}
case u3_hreq_val: {
req_u->hed_u->val_c = _http_more(req_u->hed_u->val_c, buf_c, siz_i);
break;
}
}
req_u->rat_e = u3_hreq_val;
return 0;
}
/* _http_headers_complete(): jhttp callback
*/
static c3_i
_http_headers_complete(http_parser* par_u)
{
u3_hreq *req_u = ((u3_hcon*)par_u->data)->ruc_u;
if ( par_u->method >= u3_hmet_other ) {
req_u->met_e = u3_hmet_other;
} else req_u->met_e = par_u->method;
return 0;
}
/* _http_body(): jhttp callback
*/
static c3_i
_http_body(http_parser* par_u, const c3_c* buf_c, size_t siz_i)
{
u3_hreq *req_u = ((u3_hcon*)par_u->data)->ruc_u;
u3_hbod* bod_u;
bod_u = _http_bod(siz_i, (const c3_y*)buf_c);
if ( !(req_u->bod_u) ) {
req_u->bod_u = req_u->dob_u = bod_u;
}
else {
req_u->dob_u->nex_u = bod_u;
req_u->dob_u = bod_u;
}
return 0;
}
/* _http_message_complete(): jhttp callback
*/
static c3_i
_http_message_complete(http_parser* par_u)
{
u3_hcon* hon_u = par_u->data;
u3_hreq* req_u = hon_u->ruc_u;
hon_u->ruc_u = 0;
//_http_req_dump(req_u);
// Queue request for response control.
{
if ( !hon_u->qer_u ) {
c3_assert(!(hon_u->req_u));
hon_u->qer_u = hon_u->req_u = req_u;
}
else {
hon_u->qer_u = hon_u->qer_u->nex_u = req_u;
}
}
// Dispatch event request.
//
_http_request(req_u);
return 0;
}
/* _http_settings[]: callback array.
*/
static struct http_parser_settings _http_settings = {
_http_message_begin,
_http_url,
_http_header_field,
_http_header_value,
_http_headers_complete,
_http_body,
_http_message_complete
};
/* _http_req_new(): new http request.
*/
static u3_hreq*
_http_req_new(u3_hcon* hon_u)
{
u3_hreq* req_u = c3_malloc(sizeof(*req_u));
req_u->hon_u = hon_u;
req_u->seq_l = hon_u->seq_l++;
req_u->met_e = (u3_hmet)0;
req_u->rat_e = (u3_hrat)0;
{
struct sockaddr_in adr_u;
c3_i len_i = sizeof(adr_u);
uv_tcp_getpeername(&hon_u->wax_u, (struct sockaddr *)&adr_u, &len_i);
if ( adr_u.sin_family != AF_INET ) {
req_u->ipf_w = 0;
}
else req_u->ipf_w = ntohl(adr_u.sin_addr.s_addr);
}
req_u->liv = c3n;
req_u->end = c3n;
req_u->url_c = 0;
req_u->rub_u = 0;
req_u->bur_u = 0;
req_u->hed_u = 0;
req_u->bod_u = 0;
req_u->nex_u = 0;
return req_u;
}
/* _http_conn_read_cb(): server read callback.
*/
/*
* `nread` (siz_w) is > 0 if there is data available, 0 if libuv is done reading for
* now, or < 0 on error.
*
* The callee is responsible for closing the stream when an error happens
* by calling uv_close(). Trying to read from the stream again is undefined.
*
* The callee is responsible for freeing the buffer, libuv does not reuse it.
* The buffer may be a null buffer (where buf->base=NULL and buf->len=0) on
* error.
*/
static void
_http_conn_read_cb(uv_stream_t* tcp_u,
ssize_t siz_w,
const uv_buf_t * buf_u)
{
u3_hcon* hon_u = (u3_hcon*)(void*) tcp_u;
u3_lo_open();
{
if ( siz_w == UV_EOF ) {
_http_conn_dead(hon_u);
} else if ( siz_w < 0 ) {
uL(fprintf(uH, "http: read: %s\n", uv_strerror(siz_w)));
_http_conn_dead(hon_u);
}
else {
if ( siz_w != http_parser_execute(hon_u->par_u,
&_http_settings,
(c3_c*)buf_u->base,
siz_w) )
{
uL(fprintf(uH, "http: parse error\n"));
_http_conn_dead(hon_u);
}
}
if ( buf_u->base ) {
free(buf_u->base);
}
}
u3_lo_shut(c3y);
}
/* _http_conn_new(): create http connection.
*/
static void
_http_conn_new(u3_http *htp_u)
{
u3_hcon *hon_u = c3_malloc(sizeof(*hon_u));
uv_tcp_init(u3L, &hon_u->wax_u);
c3_w ret_w;
ret_w = uv_accept((uv_stream_t*)&htp_u->wax_u,
(uv_stream_t*)&hon_u->wax_u);
if (ret_w == UV_EOF)
{
uL(fprintf(uH, "http: accept: ERROR\n"));
uv_close((uv_handle_t*)&hon_u->wax_u, _http_conn_free_early);
}
else {
struct sockaddr_in name;
int namelen = sizeof(name);
int ret = 0;
if (0 != (ret = uv_tcp_getpeername(&hon_u->wax_u, (struct sockaddr*) &name, &namelen))) {
uL(fprintf(uH, "failed to get peer name: %s\r\n", uv_strerror(ret)));
}
uv_read_start((uv_stream_t*)&hon_u->wax_u,
_http_alloc,
_http_conn_read_cb);
hon_u->coq_l = htp_u->coq_l++;
hon_u->seq_l = 1;
hon_u->ruc_u = 0;
hon_u->req_u = 0;
hon_u->qer_u = 0;
hon_u->htp_u = htp_u;
hon_u->nex_u = htp_u->hon_u;
htp_u->hon_u = hon_u;
hon_u->par_u = c3_malloc(sizeof(struct http_parser));
http_parser_init(hon_u->par_u, HTTP_REQUEST);
((struct http_parser *)(hon_u->par_u))->data = hon_u;
}
}
/* _http_req_find(): find http request by sequence.
*/
static u3_hreq*
_http_req_find(u3_hcon* hon_u, c3_w seq_l)
{
u3_hreq* req_u = hon_u->req_u;
// XX glories of linear search
//
while ( req_u ) {
if ( seq_l == req_u->seq_l ) {
return req_u;
}
req_u = req_u->nex_u;
}
return 0;
}
/* _http_serv_find(): find http connection by sequence.
*/
static u3_http*
_http_serv_find(c3_l sev_l)
{
u3_http* htp_u = u3_Host.htp_u;
// XX glories of linear search
//
while ( htp_u ) {
if ( sev_l == htp_u->sev_l ) {
return htp_u;
}
htp_u = htp_u->nex_u;
}
return 0;
}
/* _http_conn_find(): find http connection by sequence.
*/
static u3_hcon*
_http_conn_find(u3_http *htp_u, c3_w coq_l)
{
u3_hcon* hon_u = htp_u->hon_u;
// XX glories of linear search
//
while ( hon_u ) {
if ( coq_l == hon_u->coq_l ) {
return hon_u;
}
hon_u = hon_u->nex_u;
}
return 0;
}
/* _http_heds_to_list(): C headers to list.
*/
static u3_noun
_http_heds_to_list(u3_hhed* hed_u)
{
if ( 0 == hed_u ) {
return u3_nul;
} else {
return u3nc(u3nc(u3i_string(hed_u->nam_c),
hed_u->val_c ? u3i_string(hed_u->val_c) : u3_nul),
_http_heds_to_list(hed_u->nex_u));
}
}
/* _http_list_to_heds(): list to C headers.
*/
static u3_hhed*
_http_list_to_heds(u3_noun lix)
{
u3_noun yix = lix;
u3_hhed* hed_u = 0;
while ( 1 ) {
if ( u3_nul == lix ) {
break;
}
else {
u3_noun i_lix = u3h(lix);
u3_noun pi_lix = u3h(i_lix);
u3_noun qi_lix = u3t(i_lix);
u3_noun t_lix = u3t(lix);
u3_hhed* nex_u = c3_malloc(sizeof(u3_hhed));
nex_u->nam_c = u3r_string(pi_lix);
nex_u->val_c = u3r_string(qi_lix);
nex_u->nex_u = hed_u;
hed_u = nex_u;
lix = t_lix;
}
}
u3z(yix);
return hed_u;
}
/* _http_bods_to_octs: translate body into octet-stream noun.
*/
static u3_noun
_http_bods_to_octs(u3_hbod* bod_u)
{
c3_w len_w;
c3_y* buf_y;
u3_noun cos;
{
u3_hbod* bid_u;
len_w = 0;
for ( bid_u = bod_u; bid_u; bid_u = bid_u->nex_u ) {
len_w += bid_u->len_w;
}
}
buf_y = c3_malloc(len_w);
{
c3_y* ptr_y = buf_y;
while ( bod_u ) {
memcpy(ptr_y, bod_u->hun_y, bod_u->len_w);
ptr_y += bod_u->len_w;
bod_u = bod_u->nex_u;
}
}
cos = u3i_bytes(len_w, buf_y);
free(buf_y);
return u3nc(len_w, cos);
}
/* _http_octs_to_bod(): translate octet-stream noun into body.
*/
static u3_hbod*
_http_octs_to_bod(u3_noun oct)
{
c3_w len_w;
if ( !_(u3a_is_cat(u3h(oct))) ) {
// 2GB max
u3m_bail(c3__fail); return 0;
}
len_w = u3h(oct);
{
u3_hbod* bod_u = c3_malloc(len_w + sizeof(*bod_u));
bod_u->len_w = len_w;
u3r_bytes(0, len_w, bod_u->hun_y, u3t(oct));
bod_u->nex_u = 0;
u3z(oct);
return bod_u;
}
}
/* _http_pox_to_noun(): translate srv/con/req to path noun (pox).
*/
static u3_noun
_http_pox_to_noun(c3_w sev_l, c3_w coq_l, c3_w seq_l)
{
return
u3nt(
u3_blip,
c3__http,
u3nq(u3dc("scot", c3_s2('u','v'), sev_l),
u3dc("scot", c3_s2('u','d'), coq_l),
u3dc("scot", c3_s2('u','d'), seq_l),
u3_nul));
}
/* _http_request_to_noun(): translate http request into noun, or u3_none.
*/
static u3_noun
_http_request_to_noun(u3_hreq* req_u)
{
u3_noun med, url, hed, bod;
switch ( req_u->met_e ) {
default: fprintf(stderr, "strange request\r\n"); return u3_none;
case u3_hmet_put: { med = c3__put; break; }
case u3_hmet_get: { med = c3__get; break; }
case u3_hmet_head: { med = c3__head; break; }
case u3_hmet_post: { med = c3__post; break; }
}
url = u3i_string(req_u->url_c);
hed = _http_heds_to_list(req_u->hed_u);
bod = req_u->bod_u ? u3nc(u3_nul, _http_bods_to_octs(req_u->bod_u)) : u3_nul;
return u3nq(med, url, hed, bod);
}
/* _http_new_response(): create http response structure.
*/
static u3_hrep*
_http_new_response(c3_l sev_l, c3_l coq_l, c3_l seq_l, u3_noun rep)
{
u3_noun p_rep, q_rep, r_rep;
if ( c3n == u3r_trel(rep, &p_rep, &q_rep, &r_rep) ) {
uL(fprintf(uH, "strange response\n"));
return 0;
}
else {
u3_hrep* rep_u = c3_malloc(sizeof(u3_hrep));
rep_u->sev_l = sev_l;
rep_u->coq_l = coq_l;
rep_u->seq_l = seq_l;
rep_u->sas_w = p_rep;
rep_u->hed_u = _http_list_to_heds(u3k(q_rep));
rep_u->bod_u = (u3_nul == r_rep) ? 0 : _http_octs_to_bod(u3k(u3t(r_rep)));
u3z(rep); return rep_u;
}
}
/* _http_request(): dispatch http request, returning null if async.
*/
static void
_http_request(u3_hreq* req_u)
{
u3_noun req = _http_request_to_noun(req_u);
if ( u3_none != req ) {
u3_noun pox = _http_pox_to_noun(req_u->hon_u->htp_u->sev_l,
req_u->hon_u->coq_l,
req_u->seq_l);
u3_noun typ =
_(req_u->hon_u->htp_u->lop) ?
c3__chis :
c3__this;
u3v_plan(pox,
u3nq(typ,
req_u->hon_u->htp_u->sec,
u3nc(c3y, u3i_words(1, &req_u->ipf_w)),
req));
}
}
/* _http_request_dead(): kill http request.
*/
static void
_http_request_dead(u3_hreq* req_u)
{
u3_noun pox = _http_pox_to_noun(req_u->hon_u->htp_u->sev_l,
req_u->hon_u->coq_l,
req_u->seq_l);
u3v_plan(pox, u3nc(c3__thud, u3_nul));
}
/* _http_flush(): transmit any ready data.
*/
static void
_http_flush(u3_hcon* hon_u)
{
while ( hon_u->req_u ) {
u3_hreq* req_u = hon_u->req_u;
u3_hbod* rub_u = req_u->rub_u;
if ( 0 == rub_u ) {
if ( c3y == req_u->end ) {
hon_u->req_u = req_u->nex_u;
if ( 0 == hon_u->req_u ) {
c3_assert(req_u == hon_u->qer_u);
hon_u->qer_u = 0;
}
_http_req_free(req_u);
continue;
}
else {
// We have not yet finished adding responses to this
// current request - so, we cannot start writing the next.
//
break;
}
}
else {
_http_send_body(req_u, rub_u);
req_u->rub_u = req_u->rub_u->nex_u;
if ( 0 == req_u->rub_u ) {
c3_assert(rub_u == req_u->bur_u);
req_u->bur_u = 0;
}
free(rub_u);
}
}
}
/* _http_respond(): attach http response.
*/
static void
_http_respond(u3_hrep* rep_u)
{
u3_http* htp_u;
u3_hcon* hon_u;
u3_hreq* req_u;
if ( !(htp_u = _http_serv_find(rep_u->sev_l)) ) {
if ( (u3C.wag_w & u3o_verbose) ) {
uL(fprintf(uH, "http: server not found: %x\r\n", rep_u->sev_l));
}
return;
}
if ( !(hon_u = _http_conn_find(htp_u, rep_u->coq_l)) ) {
if ( (u3C.wag_w & u3o_verbose) ) {
uL(fprintf(uH, "http: connection not found: %x/%d\r\n",
rep_u->sev_l,
rep_u->coq_l));
}
return;
}
if ( !(req_u = _http_req_find(hon_u, rep_u->seq_l)) ) {
if ( (u3C.wag_w & u3o_verbose) ) {
uL(fprintf(uH, "http: request not found: %x/%d/%d\r\n",
rep_u->sev_l,
rep_u->coq_l,
rep_u->seq_l));
}
return;
}
#if 0
uL(fprintf(uH, "http: responding: %x/%d/%d\r\n",
rep_u->sev_l,
rep_u->coq_l,
rep_u->seq_l));
#endif
_http_respond_request(req_u, rep_u);
_http_flush(hon_u);
}
void
u3_http_ef_bake(void)
{
u3_noun pax = u3nq(u3_blip, c3__http, u3k(u3A->sen), u3_nul);
u3v_plan(pax, u3nc(c3__born, u3_nul));
}
/* u3_http_ef_thou(): send %thou effect (incoming response) to http.
*/
void
u3_http_ef_thou(c3_l sev_l,
c3_l coq_l,
c3_l seq_l,
u3_noun rep)
{
u3_hrep* rep_u = _http_new_response(sev_l, coq_l, seq_l, rep);
if ( !rep_u ) {
uL(fprintf(uH, "http: response dropped\r\n"));
}
else _http_respond(rep_u);
}
/* _http_listen_cb(): listen callback.
*/
static void
_http_listen_cb(uv_stream_t* str_u, c3_i sas_i)
{
u3_http* htp_u = (u3_http*)str_u;
if ( 0 != sas_i ) {
uL(fprintf(uH, "http: listen_cb: ERROR\n"));
}
else {
_http_conn_new(htp_u);
}
}
/* _http_start(): start http server.
*/
static void
_http_start(u3_http* htp_u)
{
struct sockaddr_in add_u;
uv_tcp_init(u3L, &htp_u->wax_u);
memset(&add_u, 0, sizeof(add_u));
add_u.sin_family = AF_INET;
if ( c3y == htp_u->lop ) {
//add_u.sin_addr.s_addr = INADDR_ANY;
inet_pton(AF_INET, "127.0.0.1", &add_u.sin_addr);
}
else {
add_u.sin_addr.s_addr = INADDR_ANY;
}
/* Try ascending ports.
*/
while ( 1 ) {
add_u.sin_port = htons(htp_u->por_w);
int ret;
if ( 0 != (ret = uv_tcp_bind(&htp_u->wax_u, (const struct sockaddr*) & add_u, 0)) ) {
if ( UV_EADDRINUSE == ret ) {
htp_u->por_w++;
continue;
}
else {
uL(fprintf(uH, "http: bind: %s\n", uv_strerror(ret)));
}
}
if ( 0 != (ret = uv_listen((uv_stream_t*)&htp_u->wax_u, 16, _http_listen_cb)) ) {
if ( UV_EADDRINUSE == ret ) {
htp_u->por_w++;
continue;
}
else {
uL(fprintf(uH, "http: listen: %s\n", uv_strerror(ret)));
}
}
#if 1
uL(fprintf(uH, "http: live (%s, %s) on %d\n",
(c3y == htp_u->sec) ? "\"secure\"" : "insecure",
(c3y == htp_u->lop) ? "loopback" : "public",
htp_u->por_w));
#endif
break;
}
}
/* _http_write_ports_file(): update .http.ports
*/
void
_http_write_ports_file(c3_c *pax_c)
{
int pal_i;
c3_c *paf_c;
int por_i;
u3_http *htp_u;
pal_i = strlen(pax_c) + 13; /* includes NUL */
paf_c = u3a_malloc(pal_i);
snprintf(paf_c, pal_i, "%s/%s", pax_c, ".http.ports");
por_i = open(paf_c, O_WRONLY | O_CREAT | O_TRUNC, 0666);
u3a_free(paf_c);
for ( htp_u = u3_Host.htp_u; htp_u; htp_u = htp_u->nex_u ) {
dprintf(por_i, "%u %s %s\n", htp_u->por_w,
(c3y == htp_u->sec) ? "assumed-secure" : "insecure",
(c3y == htp_u->lop) ? "loopback" : "public");
}
c3_sync(por_i);
close(por_i);
}
/* _http_release_ports_file(): update .http.ports
*/
void
_http_release_ports_file(c3_c *pax_c)
{
int pal_i;
c3_c *paf_c;
pal_i = strlen(pax_c) + 13; /* includes NUL */
paf_c = u3a_malloc(pal_i);
snprintf(paf_c, pal_i, "%s/%s", pax_c, ".http.ports");
unlink(paf_c);
u3a_free(paf_c);
}
/* u3_http_io_init(): initialize http I/O.
*/
void
u3_http_io_init()
{
// Lens port
//
{
u3_http *htp_u = c3_malloc(sizeof(*htp_u));
htp_u->sev_l = u3A->sev_l + 2;
htp_u->coq_l = 1;
htp_u->por_w = 12321;
htp_u->sec = c3n;
htp_u->lop = c3y;
htp_u->hon_u = 0;
htp_u->nex_u = 0;
htp_u->nex_u = u3_Host.htp_u;
u3_Host.htp_u = htp_u;
}
// Logically secure port.
{
u3_http *htp_u = c3_malloc(sizeof(*htp_u));
htp_u->sev_l = u3A->sev_l + 1;
htp_u->coq_l = 1;
htp_u->por_w = 8443;
htp_u->sec = c3y;
htp_u->lop = c3n;
htp_u->hon_u = 0;
htp_u->nex_u = 0;
htp_u->nex_u = u3_Host.htp_u;
u3_Host.htp_u = htp_u;
}
// Insecure port.
//
{
u3_http *htp_u = c3_malloc(sizeof(*htp_u));
htp_u->sev_l = u3A->sev_l;
htp_u->coq_l = 1;
htp_u->por_w = 8080;
htp_u->sec = c3n;
htp_u->lop = c3n;
htp_u->hon_u = 0;
htp_u->nex_u = 0;
htp_u->nex_u = u3_Host.htp_u;
u3_Host.htp_u = htp_u;
}
u3_Host.ctp_u.coc_u = 0;
}
/* u3_http_io_talk(): bring up listener.
*/
void
u3_http_io_talk()
{
u3_http* htp_u;
for ( htp_u = u3_Host.htp_u; htp_u; htp_u = htp_u->nex_u ) {
_http_start(htp_u);
}
_http_write_ports_file(u3_Host.dir_c);
}
/* u3_http_io_poll(): poll kernel for http I/O.
*/
void
u3_http_io_poll(void)
{
}
/* u3_http_io_exit(): shut down http.
*/
void
u3_http_io_exit(void)
{
_http_release_ports_file(u3_Host.dir_c);
}
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