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http.c
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http.c
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/*
* Copyright (c) 2013-2022 Joris Vink <joris@coders.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <ctype.h>
#include <fcntl.h>
#include <inttypes.h>
#include <float.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include "kore.h"
#include "http.h"
#if defined(KORE_USE_PYTHON)
#include "python_api.h"
#endif
#if defined(KORE_USE_PGSQL)
#include "pgsql.h"
#endif
#if defined(KORE_USE_TASKS)
#include "tasks.h"
#endif
#if defined(KORE_USE_CURL)
#include "curl.h"
#endif
static struct {
const char *ext;
const char *type;
} builtin_media[] = {
{ "gif", "image/gif" },
{ "png", "image/png" },
{ "jpeg", "image/jpeg" },
{ "jpg", "image/jpeg" },
{ "zip", "application/zip" },
{ "pdf", "application/pdf" },
{ "json", "application/json" },
{ "js", "application/javascript" },
{ "htm", "text/html" },
{ "txt", "text/plain" },
{ "css", "text/css" },
{ "html", "text/html" },
{ NULL, NULL },
};
#define HTTP_MAP_LIMIT 127
/*
* token = 1*<any CHAR except CTLs or separators>
* separators = "(" | ")" | "<" | ">" | "@"
* | "," | ";" | ":" | "\" | <">
* | "/" | "[" | "]" | "?" | "="
* | "{" | "}" | SP | HT
*/
static const char http_token[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, '!' , 0x00, '#' , '$' , '%' , '&' , '\'',
0x00, 0x00, '*' , '+' , 0x00, '-' , '.' , 0x00,
'0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' ,
'8' , '9' , 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 'A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' ,
'H' , 'I' , 'J' , 'K' , 'L' , 'M' , 'N' , 'O' ,
'P' , 'Q' , 'R' , 'S' , 'T' , 'U' , 'V' , 'W' ,
'X' , 'Y' , 'Z' , 0x00, 0x00, 0x00, '^' , '_' ,
'`' , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' ,
'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' ,
'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' ,
'x' , 'y' , 'z' , 0x00, '|' , 0x00, '~' , 0x00
};
/*
* field-content = <the OCTETs making up the field-value
* and consisting of either *TEXT or combinations
* of token, separators, and quoted-string>
*/
static const char http_field_content[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
' ' , '!' , '"' , '#' , '$' , '%' , '&' , '\'',
'(' , ')' , '*' , '+' , ',' , '-' , '.' , '/' ,
'0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' ,
'8' , '9' , ':' , ';' , '<' , '=' , '>' , '?' ,
'@' , 'A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' ,
'H' , 'I' , 'J' , 'K' , 'L' , 'M' , 'N' , 'O' ,
'P' , 'Q' , 'R' , 'S' , 'T' , 'U' , 'V' , 'W' ,
'X' , 'Y' , 'Z' , '[' , '\\', ']' , '^' , '_' ,
'`' , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' ,
'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' ,
'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' ,
'x' , 'y' , 'z' , '{' , '|' , '}' , '~' , 0x00
};
/*
* Fixed "pretty" HTTP error HTML page.
*/
static const char *pretty_error_fmt =
"<html>\n<head>\n\t<title>%d %s</title>"
"</head>\n<body>\n\t"
"<h1>%d %s</h1>\n"
"</body>\n</html>\n";
static int http_body_recv(struct netbuf *);
static int http_release_buffer(struct netbuf *);
static void http_error_response(struct connection *, int);
static int http_data_convert(void *, void **, void *, int);
static void http_write_response_cookie(struct http_cookie *);
static int http_body_update(struct http_request *, const void *, size_t);
static void http_argument_add(struct http_request *, char *, char *,
int, int);
static int http_check_redirect(struct http_request *,
struct kore_domain *);
static void http_response_normal(struct http_request *,
struct connection *, int, const void *, size_t);
static void multipart_add_field(struct http_request *, struct kore_buf *,
char *, const char *, const int);
static void multipart_file_add(struct http_request *, struct kore_buf *,
const char *, const char *, const char *, const int);
static int multipart_find_data(struct kore_buf *, struct kore_buf *,
size_t *, struct http_request *, const void *, size_t);
static int multipart_parse_headers(struct http_request *,
struct kore_buf *, struct kore_buf *,
const char *, const int);
static struct http_request *http_request_new(struct connection *,
const char *, const char *, char *,
const char *);
static struct kore_buf *header_buf;
static struct kore_buf *ckhdr_buf;
static char http_version[64];
static u_int16_t http_version_len;
static TAILQ_HEAD(, http_request) http_requests;
static TAILQ_HEAD(, http_request) http_requests_sleeping;
static LIST_HEAD(, http_media_type) http_media_types;
static struct kore_pool http_request_pool;
static struct kore_pool http_cookie_pool;
static struct kore_pool http_body_path;
static struct kore_pool http_rlq_pool;
struct kore_pool http_header_pool;
int http_pretty_error = 0;
u_int32_t http_request_count = 0;
u_int32_t http_request_ms = HTTP_REQUEST_MS;
u_int16_t http_body_timeout = HTTP_BODY_TIMEOUT;
u_int32_t http_request_limit = HTTP_REQUEST_LIMIT;
u_int64_t http_hsts_enable = HTTP_HSTS_ENABLE;
u_int16_t http_header_max = HTTP_HEADER_MAX_LEN;
u_int16_t http_keepalive_time = HTTP_KEEPALIVE_TIME;
u_int16_t http_header_timeout = HTTP_HEADER_TIMEOUT;
size_t http_body_max = HTTP_BODY_MAX_LEN;
char *http_body_disk_path = HTTP_BODY_DISK_PATH;
u_int64_t http_body_disk_offload = HTTP_BODY_DISK_OFFLOAD;
void
http_parent_init(void)
{
LIST_INIT(&http_media_types);
}
void
http_init(void)
{
int prealloc, l, i;
TAILQ_INIT(&http_requests);
TAILQ_INIT(&http_requests_sleeping);
header_buf = kore_buf_alloc(HTTP_HEADER_BUFSIZE);
ckhdr_buf = kore_buf_alloc(HTTP_COOKIE_BUFSIZE);
if (!http_version_len) {
l = snprintf(http_version, sizeof(http_version),
"server: kore (%s)\r\n", kore_version);
if (l == -1 || (size_t)l >= sizeof(http_version))
fatal("http_init(): http_version buffer too small");
http_version_len = l;
}
prealloc = MIN((worker_max_connections / 10), 1000);
kore_pool_init(&http_request_pool, "http_request_pool",
sizeof(struct http_request), http_request_limit);
kore_pool_init(&http_header_pool, "http_header_pool",
sizeof(struct http_header), prealloc * HTTP_REQ_HEADER_MAX);
kore_pool_init(&http_cookie_pool, "http_cookie_pool",
sizeof(struct http_cookie), prealloc * HTTP_MAX_COOKIES);
kore_pool_init(&http_rlq_pool, "http_rlq_pool",
sizeof(struct http_runlock_queue), http_request_limit);
kore_pool_init(&http_body_path,
"http_body_path", HTTP_BODY_PATH_MAX, prealloc);
for (i = 0; builtin_media[i].ext != NULL; i++) {
if (!http_media_register(builtin_media[i].ext,
builtin_media[i].type)) {
fatal("duplicate media type for %s",
builtin_media[i].ext);
}
}
}
void
http_cleanup(void)
{
if (header_buf != NULL) {
kore_buf_free(header_buf);
header_buf = NULL;
}
if (ckhdr_buf != NULL) {
kore_buf_free(ckhdr_buf);
ckhdr_buf = NULL;
}
kore_pool_cleanup(&http_request_pool);
kore_pool_cleanup(&http_header_pool);
kore_pool_cleanup(&http_body_path);
}
void
http_server_version(const char *version)
{
int l;
l = snprintf(http_version, sizeof(http_version),
"server: %s\r\n", version);
if (l == -1 || (size_t)l >= sizeof(http_version))
fatal("http_server_version(): http_version buffer too small");
http_version_len = l;
}
int
http_check_timeout(struct connection *c, u_int64_t now)
{
u_int64_t d;
if (c->http_timeout == 0)
return (KORE_RESULT_OK);
if (now > c->http_start)
d = now - c->http_start;
else
d = 0;
if (d >= c->http_timeout) {
http_error_response(c, HTTP_STATUS_REQUEST_TIMEOUT);
kore_connection_disconnect(c);
return (KORE_RESULT_ERROR);
}
return (KORE_RESULT_OK);
}
void
http_request_sleep(struct http_request *req)
{
if (!(req->flags & HTTP_REQUEST_SLEEPING)) {
req->flags |= HTTP_REQUEST_SLEEPING;
TAILQ_REMOVE(&http_requests, req, list);
TAILQ_INSERT_TAIL(&http_requests_sleeping, req, list);
}
}
void
http_request_wakeup(struct http_request *req)
{
if (req->flags & HTTP_REQUEST_SLEEPING) {
req->flags &= ~HTTP_REQUEST_SLEEPING;
TAILQ_REMOVE(&http_requests_sleeping, req, list);
TAILQ_INSERT_TAIL(&http_requests, req, list);
}
}
void
http_process(void)
{
u_int64_t total;
struct http_request *req, *next;
total = 0;
for (req = TAILQ_FIRST(&http_requests); req != NULL; req = next) {
if (total >= http_request_ms)
break;
next = TAILQ_NEXT(req, list);
if (req->flags & HTTP_REQUEST_DELETE) {
http_request_free(req);
continue;
}
/* Sleeping requests should be in http_requests_sleeping. */
if (req->flags & HTTP_REQUEST_SLEEPING)
fatal("http_process: sleeping request on list");
if (!(req->flags & HTTP_REQUEST_COMPLETE))
continue;
http_process_request(req);
total += req->ms;
if (req->flags & HTTP_REQUEST_DELETE)
http_request_free(req);
}
}
void
http_process_request(struct http_request *req)
{
int r;
if (req->flags & HTTP_REQUEST_DELETE || req->rt == NULL)
return;
req->start = kore_time_ms();
if (req->rt->auth != NULL && !(req->flags & HTTP_REQUEST_AUTHED))
r = kore_auth_run(req, req->rt->auth);
else
r = KORE_RESULT_OK;
switch (r) {
case KORE_RESULT_OK:
r = kore_runtime_http_request(req->rt->rcall, req);
break;
case KORE_RESULT_RETRY:
break;
case KORE_RESULT_ERROR:
/*
* Set r to KORE_RESULT_OK so we can properly
* flush the result from kore_auth_run().
*/
r = KORE_RESULT_OK;
break;
default:
fatal("kore_auth() returned unknown %d", r);
}
req->end = kore_time_ms();
req->ms = req->end - req->start;
req->total += req->ms;
switch (r) {
case KORE_RESULT_OK:
r = net_send_flush(req->owner);
if (r == KORE_RESULT_ERROR)
kore_connection_disconnect(req->owner);
break;
case KORE_RESULT_ERROR:
kore_connection_disconnect(req->owner);
break;
case KORE_RESULT_RETRY:
return;
default:
fatal("A page handler returned an unknown result: %d", r);
}
if (req->rt->dom->accesslog)
kore_accesslog(req);
req->flags |= HTTP_REQUEST_DELETE;
}
void
http_response_header(struct http_request *req,
const char *header, const char *value)
{
struct http_header *hdr;
hdr = NULL;
TAILQ_FOREACH(hdr, &req->resp_headers, list) {
if (!strcasecmp(hdr->header, header)) {
TAILQ_REMOVE(&req->resp_headers, hdr, list);
kore_free(hdr->header);
kore_free(hdr->value);
break;
}
}
if (hdr == NULL)
hdr = kore_pool_get(&http_header_pool);
hdr->header = kore_strdup(header);
hdr->value = kore_strdup(value);
TAILQ_INSERT_TAIL(&(req->resp_headers), hdr, list);
}
void
http_request_free(struct http_request *req)
{
#if defined(KORE_USE_TASKS)
struct kore_task *t, *nt;
int pending_tasks;
#endif
#if defined(KORE_USE_PGSQL)
struct kore_pgsql *pgsql;
#endif
#if defined(KORE_USE_CURL)
struct kore_curl *client;
#endif
struct http_file *f, *fnext;
struct http_arg *q, *qnext;
struct http_header *hdr, *next;
struct http_cookie *ck, *cknext;
if (req->rt != NULL && req->rt->on_free != NULL)
kore_runtime_http_request_free(req->rt->on_free, req);
if (req->runlock != NULL) {
LIST_REMOVE(req->runlock, list);
req->runlock = NULL;
}
#if defined(KORE_USE_TASKS)
pending_tasks = 0;
for (t = LIST_FIRST(&(req->tasks)); t != NULL; t = nt) {
nt = LIST_NEXT(t, rlist);
if (!kore_task_finished(t)) {
pending_tasks++;
} else {
kore_task_destroy(t);
}
}
if (pending_tasks)
return;
#endif
#if defined(KORE_USE_PYTHON)
if (req->py_coro != NULL) {
kore_python_coro_delete(req->py_coro);
req->py_coro = NULL;
}
if (req->py_validator != NULL) {
kore_python_coro_delete(req->py_validator);
req->py_validator = NULL;
}
Py_XDECREF(req->py_req);
#endif
#if defined(KORE_USE_PGSQL)
while (!LIST_EMPTY(&(req->pgsqls))) {
pgsql = LIST_FIRST(&(req->pgsqls));
kore_pgsql_cleanup(pgsql);
}
#endif
#if defined(KORE_USE_CURL)
while (!LIST_EMPTY(&req->chandles)) {
client = LIST_FIRST(&req->chandles);
kore_curl_cleanup(client);
}
#endif
kore_free(req->headers);
req->host = NULL;
req->path = NULL;
req->headers = NULL;
TAILQ_REMOVE(&http_requests, req, list);
if (req->owner != NULL)
TAILQ_REMOVE(&(req->owner->http_requests), req, olist);
for (hdr = TAILQ_FIRST(&(req->resp_headers)); hdr != NULL; hdr = next) {
next = TAILQ_NEXT(hdr, list);
TAILQ_REMOVE(&(req->resp_headers), hdr, list);
kore_free(hdr->header);
kore_free(hdr->value);
kore_pool_put(&http_header_pool, hdr);
}
for (hdr = TAILQ_FIRST(&(req->req_headers)); hdr != NULL; hdr = next) {
next = TAILQ_NEXT(hdr, list);
TAILQ_REMOVE(&(req->req_headers), hdr, list);
kore_pool_put(&http_header_pool, hdr);
}
for (ck = TAILQ_FIRST(&(req->resp_cookies)); ck != NULL; ck = cknext) {
cknext = TAILQ_NEXT(ck, list);
TAILQ_REMOVE(&(req->resp_cookies), ck, list);
kore_free(ck->name);
kore_free(ck->value);
kore_free(ck->path);
kore_free(ck->domain);
kore_pool_put(&http_cookie_pool, ck);
}
for (ck = TAILQ_FIRST(&(req->req_cookies)); ck != NULL; ck = cknext) {
cknext = TAILQ_NEXT(ck, list);
TAILQ_REMOVE(&(req->req_cookies), ck, list);
kore_free(ck->name);
kore_free(ck->value);
kore_pool_put(&http_cookie_pool, ck);
}
for (q = TAILQ_FIRST(&(req->arguments)); q != NULL; q = qnext) {
qnext = TAILQ_NEXT(q, list);
TAILQ_REMOVE(&(req->arguments), q, list);
kore_free(q->name);
kore_free(q->s_value);
kore_free(q);
}
for (f = TAILQ_FIRST(&(req->files)); f != NULL; f = fnext) {
fnext = TAILQ_NEXT(f, list);
TAILQ_REMOVE(&(req->files), f, list);
kore_free(f->filename);
kore_free(f->name);
kore_free(f);
}
if (req->http_body != NULL)
kore_buf_free(req->http_body);
if (req->http_body_fd != -1)
(void)close(req->http_body_fd);
if (req->http_body_path != NULL) {
if (unlink(req->http_body_path) == -1 && errno != ENOENT) {
kore_log(LOG_NOTICE, "failed to unlink %s: %s",
req->http_body_path, errno_s);
}
kore_pool_put(&http_body_path, req->http_body_path);
}
if (req->hdlr_extra != NULL &&
!(req->flags & HTTP_REQUEST_RETAIN_EXTRA))
kore_free(req->hdlr_extra);
kore_pool_put(&http_request_pool, req);
http_request_count--;
}
void
http_serveable(struct http_request *req, const void *data, size_t len,
const char *etag, const char *type)
{
const char *match;
if (req->method != HTTP_METHOD_GET) {
http_response_header(req, "allow", "get");
http_response(req, HTTP_STATUS_BAD_REQUEST, NULL, 0);
return;
}
if (http_request_header(req, "if-none-match", &match)) {
if (!strcmp(match, etag)) {
http_response(req, HTTP_STATUS_NOT_MODIFIED, NULL, 0);
return;
}
}
http_response_header(req, "etag", etag);
http_response_header(req, "content-type", type);
http_response(req, HTTP_STATUS_OK, data, len);
}
void
http_response(struct http_request *req, int code, const void *d, size_t l)
{
if (req->owner == NULL)
return;
req->status = code;
switch (req->owner->proto) {
case CONN_PROTO_HTTP:
case CONN_PROTO_WEBSOCKET:
http_response_normal(req, req->owner, code, d, l);
break;
default:
fatal("%s: bad proto %d", __func__, req->owner->proto);
/* NOTREACHED. */
}
}
void
http_response_close(struct http_request *req, int code, const void *d, size_t l)
{
if (req->owner == NULL)
return;
req->status = code;
req->owner->flags |= CONN_CLOSE_EMPTY;
switch (req->owner->proto) {
case CONN_PROTO_HTTP:
case CONN_PROTO_WEBSOCKET:
http_response_normal(req, req->owner, code, d, l);
break;
default:
fatal("%s: bad proto %d", __func__, req->owner->proto);
/* NOTREACHED. */
}
}
void
http_response_json(struct http_request *req, int status,
struct kore_json_item *json)
{
struct kore_buf *buf;
if (req->owner == NULL)
return;
buf = kore_buf_alloc(1024);
kore_json_item_tobuf(json, buf);
kore_json_item_free(json);
req->status = status;
http_response_header(req, "content-type", "application/json");
switch (req->owner->proto) {
case CONN_PROTO_HTTP:
http_response_stream(req, status, buf->data, buf->offset,
http_release_buffer, buf);
break;
default:
fatal("%s: bad proto %d", __func__, req->owner->proto);
/* NOTREACHED. */
}
}
void
http_response_stream(struct http_request *req, int status, void *base,
size_t len, int (*cb)(struct netbuf *), void *arg)
{
struct netbuf *nb;
if (req->owner == NULL)
return;
req->status = status;
switch (req->owner->proto) {
case CONN_PROTO_HTTP:
http_response_normal(req, req->owner, status, NULL, len);
break;
default:
fatal("%s: bad proto %d", __func__, req->owner->proto);
/* NOTREACHED. */
}
net_send_stream(req->owner, base, len, cb, &nb);
nb->extra = arg;
if (req->method == HTTP_METHOD_HEAD) {
nb->s_off = nb->b_len;
net_remove_netbuf(req->owner, nb);
}
}
void
http_response_fileref(struct http_request *req, int status,
struct kore_fileref *ref)
{
struct tm *tm;
time_t mtime;
char tbuf[128];
const char *media_type, *modified;
if (req->owner == NULL)
return;
media_type = http_media_type(ref->path);
if (media_type != NULL)
http_response_header(req, "content-type", media_type);
if (http_request_header(req, "if-modified-since", &modified)) {
mtime = kore_date_to_time(modified);
if (mtime == ref->mtime_sec) {
kore_fileref_release(ref);
http_response(req, HTTP_STATUS_NOT_MODIFIED, NULL, 0);
return;
}
}
if ((tm = gmtime(&ref->mtime_sec)) != NULL) {
if (strftime(tbuf, sizeof(tbuf),
"%a, %d %b %Y %H:%M:%S GMT", tm) > 0) {
http_response_header(req, "last-modified", tbuf);
}
}
req->status = status;
switch (req->owner->proto) {
case CONN_PROTO_HTTP:
http_response_normal(req, req->owner, status, NULL, ref->size);
break;
default:
fatal("http_response_fd() bad proto %d", req->owner->proto);
/* NOTREACHED. */
}
if (req->method != HTTP_METHOD_HEAD)
net_send_fileref(req->owner, ref);
else
kore_fileref_release(ref);
}
int
http_request_header(struct http_request *req, const char *header,
const char **out)
{
struct http_header *hdr;
TAILQ_FOREACH(hdr, &(req->req_headers), list) {
if (!strcasecmp(hdr->header, header)) {
*out = hdr->value;
return (KORE_RESULT_OK);
}
}
if (!strcasecmp(header, "host")) {
*out = req->host;
return (KORE_RESULT_OK);
}
return (KORE_RESULT_ERROR);
}
int
http_request_header_get(struct http_request *req, const char *header,
void **out, void *nout, int type)
{
struct http_header *hdr;
if (type == HTTP_ARG_TYPE_STRING)
fatal("%s: cannot be called with type string", __func__);
TAILQ_FOREACH(hdr, &req->req_headers, list) {
if (strcasecmp(hdr->header, header))
continue;
if (http_data_convert(hdr->value, out, nout, type))
return (KORE_RESULT_OK);
return (KORE_RESULT_ERROR);
}
return (KORE_RESULT_ERROR);
}
int
http_request_cookie(struct http_request *req, const char *cookie, char **out)
{
struct http_cookie *ck;
TAILQ_FOREACH(ck, &(req->req_cookies), list) {
if (!strcasecmp(ck->name, cookie)) {
*out = ck->value;
return (KORE_RESULT_OK);
}
}
return (KORE_RESULT_ERROR);
}
int
http_header_recv(struct netbuf *nb)
{
struct connection *c;
size_t len;
struct http_header *hdr;
struct http_request *req;
u_int8_t *end_headers;
int h, i, v, skip, l;
char *headers[HTTP_REQ_HEADER_MAX];
char *value, *host, *request[4], *hbuf;
c = nb->owner;
if (nb->s_off < 4)
return (KORE_RESULT_OK);
if (!isalpha(nb->buf[0])) {
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_ERROR);
}
skip = 4;
end_headers = kore_mem_find(nb->buf, nb->s_off, "\r\n\r\n", 4);
if (end_headers == NULL) {
end_headers = kore_mem_find(nb->buf, nb->s_off, "\n\n", 2);
if (end_headers == NULL) {
if (nb->s_off == http_header_max) {
http_error_response(c,
HTTP_STATUS_REQUEST_ENTITY_TOO_LARGE);
return (KORE_RESULT_ERROR);
}
return (KORE_RESULT_OK);
}
skip = 2;
}
*end_headers = '\0';
end_headers += skip;
len = end_headers - nb->buf;
hbuf = (char *)nb->buf;
h = kore_split_string(hbuf, "\r\n", headers, HTTP_REQ_HEADER_MAX);
if (h < 2) {
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
v = kore_split_string(headers[0], " ", request, 4);
if (v != 3) {
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
skip = 0;
host = NULL;
for (i = 0; i < h; i++) {
if (strncasecmp(headers[i], "host", 4))
continue;
if ((host = http_validate_header(headers[i])) == NULL) {
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
if (*host == '\0') {
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
skip = i;
break;
}
if (host == NULL) {
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
req = http_request_new(c, host, request[0], request[1], request[2]);
if (req == NULL)
return (KORE_RESULT_OK);
/* take full ownership of the buffer. */
req->headers = nb->buf;
nb->buf = NULL;
nb->m_len = 0;
for (i = 1; i < h; i++) {
if (i == skip)
continue;
if ((value = http_validate_header(headers[i])) == NULL) {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
if (*value == '\0') {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(c, HTTP_STATUS_BAD_REQUEST);
return (KORE_RESULT_OK);
}
hdr = kore_pool_get(&http_header_pool);
hdr->header = headers[i];
hdr->value = value;
TAILQ_INSERT_TAIL(&(req->req_headers), hdr, list);
if (req->agent == NULL &&
!strcasecmp(hdr->header, "user-agent"))
req->agent = hdr->value;
if (req->referer == NULL &&
!strcasecmp(hdr->header, "referer"))
req->referer = hdr->value;
}
if (req->flags & HTTP_REQUEST_EXPECT_BODY) {
if (http_body_max == 0) {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(req->owner,
HTTP_STATUS_METHOD_NOT_ALLOWED);
return (KORE_RESULT_OK);
}
if (!http_request_header_uint64(req, "content-length",
&req->content_length)) {
if (req->method == HTTP_METHOD_DELETE) {
req->flags |= HTTP_REQUEST_COMPLETE;
return (KORE_RESULT_OK);
}
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(req->owner,
HTTP_STATUS_LENGTH_REQUIRED);
return (KORE_RESULT_OK);
}
if (req->content_length == 0) {
c->http_timeout = 0;
req->flags |= HTTP_REQUEST_COMPLETE;
req->flags &= ~HTTP_REQUEST_EXPECT_BODY;
return (KORE_RESULT_OK);
}
if (req->content_length > http_body_max) {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(req->owner,
HTTP_STATUS_REQUEST_ENTITY_TOO_LARGE);
return (KORE_RESULT_OK);
}
req->http_body_length = req->content_length;
if (http_body_disk_offload > 0 &&
req->content_length > http_body_disk_offload) {
req->http_body_path = kore_pool_get(&http_body_path);
l = snprintf(req->http_body_path, HTTP_BODY_PATH_MAX,
"%s/http_body.XXXXXX", http_body_disk_path);
if (l == -1 || (size_t)l >= HTTP_BODY_PATH_MAX) {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(req->owner,
HTTP_STATUS_INTERNAL_ERROR);
return (KORE_RESULT_ERROR);
}
req->http_body = NULL;
req->http_body_fd = mkstemp(req->http_body_path);
if (req->http_body_fd == -1) {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(req->owner,
HTTP_STATUS_INTERNAL_ERROR);
return (KORE_RESULT_OK);
}
} else {
req->http_body_fd = -1;
req->http_body = kore_buf_alloc(req->content_length);
}
SHA256Init(&req->hashctx);
c->http_timeout = http_body_timeout * 1000;
if (!http_body_update(req, end_headers, nb->s_off - len)) {
req->flags |= HTTP_REQUEST_DELETE;
http_error_response(req->owner,
HTTP_STATUS_INTERNAL_ERROR);
return (KORE_RESULT_OK);
}
} else {
c->http_timeout = 0;
}
if (req->rt->on_headers != NULL) {
if (!kore_runtime_http_request(req->rt->on_headers, req)) {
req->flags |= HTTP_REQUEST_DELETE;
return (KORE_RESULT_OK);
}
}
return (KORE_RESULT_OK);
}
int
http_argument_get(struct http_request *req, const char *name,
void **out, void *nout, int type)
{
struct http_arg *q;
TAILQ_FOREACH(q, &(req->arguments), list) {
if (strcmp(q->name, name))
continue;