| Index: third_party/libevent/http.c
|
| diff --git a/third_party/libevent/http.c b/third_party/libevent/http.c
|
| deleted file mode 100644
|
| index 4abce23934ee17f813cf52f6576c972b9c3483f6..0000000000000000000000000000000000000000
|
| --- a/third_party/libevent/http.c
|
| +++ /dev/null
|
| @@ -1,2885 +0,0 @@
|
| -/*
|
| - * Copyright (c) 2002-2006 Niels Provos <provos@citi.umich.edu>
|
| - * All rights reserved.
|
| - *
|
| - * Redistribution and use in source and binary forms, with or without
|
| - * modification, are permitted provided that the following conditions
|
| - * are met:
|
| - * 1. Redistributions of source code must retain the above copyright
|
| - * notice, this list of conditions and the following disclaimer.
|
| - * 2. Redistributions in binary form must reproduce the above copyright
|
| - * notice, this list of conditions and the following disclaimer in the
|
| - * documentation and/or other materials provided with the distribution.
|
| - * 3. The name of the author may not be used to endorse or promote products
|
| - * derived from this software without specific prior written permission.
|
| - *
|
| - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
| - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
| - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
| - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
| - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
| - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
| - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
| - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
| - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| - */
|
| -
|
| -#ifdef HAVE_CONFIG_H
|
| -#include "config.h"
|
| -#endif
|
| -
|
| -#ifdef HAVE_SYS_PARAM_H
|
| -#include <sys/param.h>
|
| -#endif
|
| -#ifdef HAVE_SYS_TYPES_H
|
| -#include <sys/types.h>
|
| -#endif
|
| -
|
| -#ifdef HAVE_SYS_TIME_H
|
| -#include <sys/time.h>
|
| -#endif
|
| -#ifdef HAVE_SYS_IOCCOM_H
|
| -#include <sys/ioccom.h>
|
| -#endif
|
| -
|
| -#ifndef WIN32
|
| -#include <sys/resource.h>
|
| -#include <sys/socket.h>
|
| -#include <sys/stat.h>
|
| -#include <sys/wait.h>
|
| -#endif
|
| -
|
| -#include <sys/queue.h>
|
| -
|
| -#ifndef WIN32
|
| -#include <netinet/in.h>
|
| -#include <netdb.h>
|
| -#endif
|
| -
|
| -#ifdef WIN32
|
| -#include <winsock2.h>
|
| -#endif
|
| -
|
| -#include <assert.h>
|
| -#include <ctype.h>
|
| -#include <errno.h>
|
| -#include <stdio.h>
|
| -#include <stdlib.h>
|
| -#include <string.h>
|
| -#ifndef WIN32
|
| -#include <syslog.h>
|
| -#endif
|
| -#include <signal.h>
|
| -#include <time.h>
|
| -#ifdef HAVE_UNISTD_H
|
| -#include <unistd.h>
|
| -#endif
|
| -#ifdef HAVE_FCNTL_H
|
| -#include <fcntl.h>
|
| -#endif
|
| -
|
| -#undef timeout_pending
|
| -#undef timeout_initialized
|
| -
|
| -#include "strlcpy-internal.h"
|
| -#include "event.h"
|
| -#include "evhttp.h"
|
| -#include "evutil.h"
|
| -#include "log.h"
|
| -#include "http-internal.h"
|
| -
|
| -#ifdef WIN32
|
| -#define strcasecmp _stricmp
|
| -#define strncasecmp _strnicmp
|
| -#define strdup _strdup
|
| -#endif
|
| -
|
| -#ifndef HAVE_GETNAMEINFO
|
| -#define NI_MAXSERV 32
|
| -#define NI_MAXHOST 1025
|
| -
|
| -#ifndef NI_NUMERICHOST
|
| -#define NI_NUMERICHOST 1
|
| -#endif
|
| -
|
| -#ifndef NI_NUMERICSERV
|
| -#define NI_NUMERICSERV 2
|
| -#endif
|
| -
|
| -static int
|
| -fake_getnameinfo(const struct sockaddr *sa, size_t salen, char *host,
|
| - size_t hostlen, char *serv, size_t servlen, int flags)
|
| -{
|
| - struct sockaddr_in *sin = (struct sockaddr_in *)sa;
|
| -
|
| - if (serv != NULL) {
|
| - char tmpserv[16];
|
| - evutil_snprintf(tmpserv, sizeof(tmpserv),
|
| - "%d", ntohs(sin->sin_port));
|
| - if (strlcpy(serv, tmpserv, servlen) >= servlen)
|
| - return (-1);
|
| - }
|
| -
|
| - if (host != NULL) {
|
| - if (flags & NI_NUMERICHOST) {
|
| - if (strlcpy(host, inet_ntoa(sin->sin_addr),
|
| - hostlen) >= hostlen)
|
| - return (-1);
|
| - else
|
| - return (0);
|
| - } else {
|
| - struct hostent *hp;
|
| - hp = gethostbyaddr((char *)&sin->sin_addr,
|
| - sizeof(struct in_addr), AF_INET);
|
| - if (hp == NULL)
|
| - return (-2);
|
| -
|
| - if (strlcpy(host, hp->h_name, hostlen) >= hostlen)
|
| - return (-1);
|
| - else
|
| - return (0);
|
| - }
|
| - }
|
| - return (0);
|
| -}
|
| -
|
| -#endif
|
| -
|
| -#ifndef HAVE_GETADDRINFO
|
| -/* Apparently msvc2010 does have an addrinfo definition visible here */
|
| -#if !defined(WIN32) || !defined(_MSC_VER) || (_MSC_VER < 1600)
|
| -struct addrinfo {
|
| - int ai_family;
|
| - int ai_socktype;
|
| - int ai_protocol;
|
| - size_t ai_addrlen;
|
| - struct sockaddr *ai_addr;
|
| - struct addrinfo *ai_next;
|
| -};
|
| -#endif
|
| -static int
|
| -fake_getaddrinfo(const char *hostname, struct addrinfo *ai)
|
| -{
|
| - struct hostent *he = NULL;
|
| - struct sockaddr_in *sa;
|
| - if (hostname) {
|
| - he = gethostbyname(hostname);
|
| - if (!he)
|
| - return (-1);
|
| - }
|
| - ai->ai_family = he ? he->h_addrtype : AF_INET;
|
| - ai->ai_socktype = SOCK_STREAM;
|
| - ai->ai_protocol = 0;
|
| - ai->ai_addrlen = sizeof(struct sockaddr_in);
|
| - if (NULL == (ai->ai_addr = malloc(ai->ai_addrlen)))
|
| - return (-1);
|
| - sa = (struct sockaddr_in*)ai->ai_addr;
|
| - memset(sa, 0, ai->ai_addrlen);
|
| - if (he) {
|
| - sa->sin_family = he->h_addrtype;
|
| - memcpy(&sa->sin_addr, he->h_addr_list[0], he->h_length);
|
| - } else {
|
| - sa->sin_family = AF_INET;
|
| - sa->sin_addr.s_addr = INADDR_ANY;
|
| - }
|
| - ai->ai_next = NULL;
|
| - return (0);
|
| -}
|
| -static void
|
| -fake_freeaddrinfo(struct addrinfo *ai)
|
| -{
|
| - free(ai->ai_addr);
|
| -}
|
| -#endif
|
| -
|
| -#ifndef MIN
|
| -#define MIN(a,b) (((a)<(b))?(a):(b))
|
| -#endif
|
| -
|
| -/* wrapper for setting the base from the http server */
|
| -#define EVHTTP_BASE_SET(x, y) do { \
|
| - if ((x)->base != NULL) event_base_set((x)->base, y); \
|
| -} while (0)
|
| -
|
| -extern int debug;
|
| -
|
| -static int socket_connect(int fd, const char *address, unsigned short port);
|
| -static int bind_socket_ai(struct addrinfo *, int reuse);
|
| -static int bind_socket(const char *, u_short, int reuse);
|
| -static void name_from_addr(struct sockaddr *, socklen_t, char **, char **);
|
| -static int evhttp_associate_new_request_with_connection(
|
| - struct evhttp_connection *evcon);
|
| -static void evhttp_connection_start_detectclose(
|
| - struct evhttp_connection *evcon);
|
| -static void evhttp_connection_stop_detectclose(
|
| - struct evhttp_connection *evcon);
|
| -static void evhttp_request_dispatch(struct evhttp_connection* evcon);
|
| -static void evhttp_read_firstline(struct evhttp_connection *evcon,
|
| - struct evhttp_request *req);
|
| -static void evhttp_read_header(struct evhttp_connection *evcon,
|
| - struct evhttp_request *req);
|
| -static int evhttp_add_header_internal(struct evkeyvalq *headers,
|
| - const char *key, const char *value);
|
| -static int evhttp_decode_uri_internal(const char *uri, size_t length,
|
| - char *ret, int always_decode_plus);
|
| -
|
| -void evhttp_read(int, short, void *);
|
| -void evhttp_write(int, short, void *);
|
| -
|
| -#ifndef HAVE_STRSEP
|
| -/* strsep replacement for platforms that lack it. Only works if
|
| - * del is one character long. */
|
| -static char *
|
| -strsep(char **s, const char *del)
|
| -{
|
| - char *d, *tok;
|
| - assert(strlen(del) == 1);
|
| - if (!s || !*s)
|
| - return NULL;
|
| - tok = *s;
|
| - d = strstr(tok, del);
|
| - if (d) {
|
| - *d = '\0';
|
| - *s = d + 1;
|
| - } else
|
| - *s = NULL;
|
| - return tok;
|
| -}
|
| -#endif
|
| -
|
| -static const char *
|
| -html_replace(char ch, char *buf)
|
| -{
|
| - switch (ch) {
|
| - case '<':
|
| - return "<";
|
| - case '>':
|
| - return ">";
|
| - case '"':
|
| - return """;
|
| - case '\'':
|
| - return "'";
|
| - case '&':
|
| - return "&";
|
| - default:
|
| - break;
|
| - }
|
| -
|
| - /* Echo the character back */
|
| - buf[0] = ch;
|
| - buf[1] = '\0';
|
| -
|
| - return buf;
|
| -}
|
| -
|
| -/*
|
| - * Replaces <, >, ", ' and & with <, >, ",
|
| - * ' and & correspondingly.
|
| - *
|
| - * The returned string needs to be freed by the caller.
|
| - */
|
| -
|
| -char *
|
| -evhttp_htmlescape(const char *html)
|
| -{
|
| - int i, new_size = 0, old_size = strlen(html);
|
| - char *escaped_html, *p;
|
| - char scratch_space[2];
|
| -
|
| - for (i = 0; i < old_size; ++i)
|
| - new_size += strlen(html_replace(html[i], scratch_space));
|
| -
|
| - p = escaped_html = malloc(new_size + 1);
|
| - if (escaped_html == NULL)
|
| - event_err(1, "%s: malloc(%d)", __func__, new_size + 1);
|
| - for (i = 0; i < old_size; ++i) {
|
| - const char *replaced = html_replace(html[i], scratch_space);
|
| - /* this is length checked */
|
| - strcpy(p, replaced);
|
| - p += strlen(replaced);
|
| - }
|
| -
|
| - *p = '\0';
|
| -
|
| - return (escaped_html);
|
| -}
|
| -
|
| -static const char *
|
| -evhttp_method(enum evhttp_cmd_type type)
|
| -{
|
| - const char *method;
|
| -
|
| - switch (type) {
|
| - case EVHTTP_REQ_GET:
|
| - method = "GET";
|
| - break;
|
| - case EVHTTP_REQ_POST:
|
| - method = "POST";
|
| - break;
|
| - case EVHTTP_REQ_HEAD:
|
| - method = "HEAD";
|
| - break;
|
| - default:
|
| - method = NULL;
|
| - break;
|
| - }
|
| -
|
| - return (method);
|
| -}
|
| -
|
| -static void
|
| -evhttp_add_event(struct event *ev, int timeout, int default_timeout)
|
| -{
|
| - if (timeout != 0) {
|
| - struct timeval tv;
|
| -
|
| - evutil_timerclear(&tv);
|
| - tv.tv_sec = timeout != -1 ? timeout : default_timeout;
|
| - event_add(ev, &tv);
|
| - } else {
|
| - event_add(ev, NULL);
|
| - }
|
| -}
|
| -
|
| -void
|
| -evhttp_write_buffer(struct evhttp_connection *evcon,
|
| - void (*cb)(struct evhttp_connection *, void *), void *arg)
|
| -{
|
| - event_debug(("%s: preparing to write buffer\n", __func__));
|
| -
|
| - /* Set call back */
|
| - evcon->cb = cb;
|
| - evcon->cb_arg = arg;
|
| -
|
| - /* check if the event is already pending */
|
| - if (event_pending(&evcon->ev, EV_WRITE|EV_TIMEOUT, NULL))
|
| - event_del(&evcon->ev);
|
| -
|
| - event_set(&evcon->ev, evcon->fd, EV_WRITE, evhttp_write, evcon);
|
| - EVHTTP_BASE_SET(evcon, &evcon->ev);
|
| - evhttp_add_event(&evcon->ev, evcon->timeout, HTTP_WRITE_TIMEOUT);
|
| -}
|
| -
|
| -static int
|
| -evhttp_connected(struct evhttp_connection *evcon)
|
| -{
|
| - switch (evcon->state) {
|
| - case EVCON_DISCONNECTED:
|
| - case EVCON_CONNECTING:
|
| - return (0);
|
| - case EVCON_IDLE:
|
| - case EVCON_READING_FIRSTLINE:
|
| - case EVCON_READING_HEADERS:
|
| - case EVCON_READING_BODY:
|
| - case EVCON_READING_TRAILER:
|
| - case EVCON_WRITING:
|
| - default:
|
| - return (1);
|
| - }
|
| -}
|
| -
|
| -/*
|
| - * Create the headers needed for an HTTP request
|
| - */
|
| -static void
|
| -evhttp_make_header_request(struct evhttp_connection *evcon,
|
| - struct evhttp_request *req)
|
| -{
|
| - const char *method;
|
| -
|
| - evhttp_remove_header(req->output_headers, "Proxy-Connection");
|
| -
|
| - /* Generate request line */
|
| - method = evhttp_method(req->type);
|
| - evbuffer_add_printf(evcon->output_buffer, "%s %s HTTP/%d.%d\r\n",
|
| - method, req->uri, req->major, req->minor);
|
| -
|
| - /* Add the content length on a post request if missing */
|
| - if (req->type == EVHTTP_REQ_POST &&
|
| - evhttp_find_header(req->output_headers, "Content-Length") == NULL){
|
| - char size[22];
|
| - evutil_snprintf(size, sizeof(size), "%ld",
|
| - (long)EVBUFFER_LENGTH(req->output_buffer));
|
| - evhttp_add_header(req->output_headers, "Content-Length", size);
|
| - }
|
| -}
|
| -
|
| -static int
|
| -evhttp_is_connection_close(int flags, struct evkeyvalq* headers)
|
| -{
|
| - if (flags & EVHTTP_PROXY_REQUEST) {
|
| - /* proxy connection */
|
| - const char *connection = evhttp_find_header(headers, "Proxy-Connection");
|
| - return (connection == NULL || strcasecmp(connection, "keep-alive") != 0);
|
| - } else {
|
| - const char *connection = evhttp_find_header(headers, "Connection");
|
| - return (connection != NULL && strcasecmp(connection, "close") == 0);
|
| - }
|
| -}
|
| -
|
| -static int
|
| -evhttp_is_connection_keepalive(struct evkeyvalq* headers)
|
| -{
|
| - const char *connection = evhttp_find_header(headers, "Connection");
|
| - return (connection != NULL
|
| - && strncasecmp(connection, "keep-alive", 10) == 0);
|
| -}
|
| -
|
| -static void
|
| -evhttp_maybe_add_date_header(struct evkeyvalq *headers)
|
| -{
|
| - if (evhttp_find_header(headers, "Date") == NULL) {
|
| - char date[50];
|
| -#ifndef WIN32
|
| - struct tm cur;
|
| -#endif
|
| - struct tm *cur_p;
|
| - time_t t = time(NULL);
|
| -#ifdef WIN32
|
| - cur_p = gmtime(&t);
|
| -#else
|
| - gmtime_r(&t, &cur);
|
| - cur_p = &cur;
|
| -#endif
|
| - if (strftime(date, sizeof(date),
|
| - "%a, %d %b %Y %H:%M:%S GMT", cur_p) != 0) {
|
| - evhttp_add_header(headers, "Date", date);
|
| - }
|
| - }
|
| -}
|
| -
|
| -static void
|
| -evhttp_maybe_add_content_length_header(struct evkeyvalq *headers,
|
| - long content_length)
|
| -{
|
| - if (evhttp_find_header(headers, "Transfer-Encoding") == NULL &&
|
| - evhttp_find_header(headers, "Content-Length") == NULL) {
|
| - char len[22];
|
| - evutil_snprintf(len, sizeof(len), "%ld", content_length);
|
| - evhttp_add_header(headers, "Content-Length", len);
|
| - }
|
| -}
|
| -
|
| -/*
|
| - * Create the headers needed for an HTTP reply
|
| - */
|
| -
|
| -static void
|
| -evhttp_make_header_response(struct evhttp_connection *evcon,
|
| - struct evhttp_request *req)
|
| -{
|
| - int is_keepalive = evhttp_is_connection_keepalive(req->input_headers);
|
| - evbuffer_add_printf(evcon->output_buffer, "HTTP/%d.%d %d %s\r\n",
|
| - req->major, req->minor, req->response_code,
|
| - req->response_code_line);
|
| -
|
| - if (req->major == 1) {
|
| - if (req->minor == 1)
|
| - evhttp_maybe_add_date_header(req->output_headers);
|
| -
|
| - /*
|
| - * if the protocol is 1.0; and the connection was keep-alive
|
| - * we need to add a keep-alive header, too.
|
| - */
|
| - if (req->minor == 0 && is_keepalive)
|
| - evhttp_add_header(req->output_headers,
|
| - "Connection", "keep-alive");
|
| -
|
| - if (req->minor == 1 || is_keepalive) {
|
| - /*
|
| - * we need to add the content length if the
|
| - * user did not give it, this is required for
|
| - * persistent connections to work.
|
| - */
|
| - evhttp_maybe_add_content_length_header(
|
| - req->output_headers,
|
| - (long)EVBUFFER_LENGTH(req->output_buffer));
|
| - }
|
| - }
|
| -
|
| - /* Potentially add headers for unidentified content. */
|
| - if (EVBUFFER_LENGTH(req->output_buffer)) {
|
| - if (evhttp_find_header(req->output_headers,
|
| - "Content-Type") == NULL) {
|
| - evhttp_add_header(req->output_headers,
|
| - "Content-Type", "text/html; charset=ISO-8859-1");
|
| - }
|
| - }
|
| -
|
| - /* if the request asked for a close, we send a close, too */
|
| - if (evhttp_is_connection_close(req->flags, req->input_headers)) {
|
| - evhttp_remove_header(req->output_headers, "Connection");
|
| - if (!(req->flags & EVHTTP_PROXY_REQUEST))
|
| - evhttp_add_header(req->output_headers, "Connection", "close");
|
| - evhttp_remove_header(req->output_headers, "Proxy-Connection");
|
| - }
|
| -}
|
| -
|
| -void
|
| -evhttp_make_header(struct evhttp_connection *evcon, struct evhttp_request *req)
|
| -{
|
| - struct evkeyval *header;
|
| -
|
| - /*
|
| - * Depending if this is a HTTP request or response, we might need to
|
| - * add some new headers or remove existing headers.
|
| - */
|
| - if (req->kind == EVHTTP_REQUEST) {
|
| - evhttp_make_header_request(evcon, req);
|
| - } else {
|
| - evhttp_make_header_response(evcon, req);
|
| - }
|
| -
|
| - TAILQ_FOREACH(header, req->output_headers, next) {
|
| - evbuffer_add_printf(evcon->output_buffer, "%s: %s\r\n",
|
| - header->key, header->value);
|
| - }
|
| - evbuffer_add(evcon->output_buffer, "\r\n", 2);
|
| -
|
| - if (EVBUFFER_LENGTH(req->output_buffer) > 0) {
|
| - /*
|
| - * For a request, we add the POST data, for a reply, this
|
| - * is the regular data.
|
| - */
|
| - evbuffer_add_buffer(evcon->output_buffer, req->output_buffer);
|
| - }
|
| -}
|
| -
|
| -/* Separated host, port and file from URI */
|
| -
|
| -int
|
| -evhttp_hostportfile(char *url, char **phost, u_short *pport, char **pfile)
|
| -{
|
| - /* XXX not threadsafe. */
|
| - static char host[1024];
|
| - static char file[1024];
|
| - char *p;
|
| - const char *p2;
|
| - int len;
|
| - u_short port;
|
| -
|
| - len = strlen(HTTP_PREFIX);
|
| - if (strncasecmp(url, HTTP_PREFIX, len))
|
| - return (-1);
|
| -
|
| - url += len;
|
| -
|
| - /* We might overrun */
|
| - if (strlcpy(host, url, sizeof (host)) >= sizeof(host))
|
| - return (-1);
|
| -
|
| - p = strchr(host, '/');
|
| - if (p != NULL) {
|
| - *p = '\0';
|
| - p2 = p + 1;
|
| - } else
|
| - p2 = NULL;
|
| -
|
| - if (pfile != NULL) {
|
| - /* Generate request file */
|
| - if (p2 == NULL)
|
| - p2 = "";
|
| - evutil_snprintf(file, sizeof(file), "/%s", p2);
|
| - }
|
| -
|
| - p = strchr(host, ':');
|
| - if (p != NULL) {
|
| - *p = '\0';
|
| - port = atoi(p + 1);
|
| -
|
| - if (port == 0)
|
| - return (-1);
|
| - } else
|
| - port = HTTP_DEFAULTPORT;
|
| -
|
| - if (phost != NULL)
|
| - *phost = host;
|
| - if (pport != NULL)
|
| - *pport = port;
|
| - if (pfile != NULL)
|
| - *pfile = file;
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -static int
|
| -evhttp_connection_incoming_fail(struct evhttp_request *req,
|
| - enum evhttp_connection_error error)
|
| -{
|
| - switch (error) {
|
| - case EVCON_HTTP_TIMEOUT:
|
| - case EVCON_HTTP_EOF:
|
| - /*
|
| - * these are cases in which we probably should just
|
| - * close the connection and not send a reply. this
|
| - * case may happen when a browser keeps a persistent
|
| - * connection open and we timeout on the read. when
|
| - * the request is still being used for sending, we
|
| - * need to disassociated it from the connection here.
|
| - */
|
| - if (!req->userdone) {
|
| - /* remove it so that it will not be freed */
|
| - TAILQ_REMOVE(&req->evcon->requests, req, next);
|
| - /* indicate that this request no longer has a
|
| - * connection object
|
| - */
|
| - req->evcon = NULL;
|
| - }
|
| - return (-1);
|
| - case EVCON_HTTP_INVALID_HEADER:
|
| - default: /* xxx: probably should just error on default */
|
| - /* the callback looks at the uri to determine errors */
|
| - if (req->uri) {
|
| - free(req->uri);
|
| - req->uri = NULL;
|
| - }
|
| -
|
| - /*
|
| - * the callback needs to send a reply, once the reply has
|
| - * been send, the connection should get freed.
|
| - */
|
| - (*req->cb)(req, req->cb_arg);
|
| - }
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_fail(struct evhttp_connection *evcon,
|
| - enum evhttp_connection_error error)
|
| -{
|
| - struct evhttp_request* req = TAILQ_FIRST(&evcon->requests);
|
| - void (*cb)(struct evhttp_request *, void *);
|
| - void *cb_arg;
|
| - assert(req != NULL);
|
| -
|
| - if (evcon->flags & EVHTTP_CON_INCOMING) {
|
| - /*
|
| - * for incoming requests, there are two different
|
| - * failure cases. it's either a network level error
|
| - * or an http layer error. for problems on the network
|
| - * layer like timeouts we just drop the connections.
|
| - * For HTTP problems, we might have to send back a
|
| - * reply before the connection can be freed.
|
| - */
|
| - if (evhttp_connection_incoming_fail(req, error) == -1)
|
| - evhttp_connection_free(evcon);
|
| - return;
|
| - }
|
| -
|
| - /* save the callback for later; the cb might free our object */
|
| - cb = req->cb;
|
| - cb_arg = req->cb_arg;
|
| -
|
| - /* do not fail all requests; the next request is going to get
|
| - * send over a new connection. when a user cancels a request,
|
| - * all other pending requests should be processed as normal
|
| - */
|
| - TAILQ_REMOVE(&evcon->requests, req, next);
|
| - evhttp_request_free(req);
|
| -
|
| - /* reset the connection */
|
| - evhttp_connection_reset(evcon);
|
| -
|
| - /* We are trying the next request that was queued on us */
|
| - if (TAILQ_FIRST(&evcon->requests) != NULL)
|
| - evhttp_connection_connect(evcon);
|
| -
|
| - /* inform the user */
|
| - if (cb != NULL)
|
| - (*cb)(NULL, cb_arg);
|
| -}
|
| -
|
| -void
|
| -evhttp_write(int fd, short what, void *arg)
|
| -{
|
| - struct evhttp_connection *evcon = arg;
|
| - int n;
|
| -
|
| - if (what == EV_TIMEOUT) {
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_TIMEOUT);
|
| - return;
|
| - }
|
| -
|
| - n = evbuffer_write(evcon->output_buffer, fd);
|
| - if (n == -1) {
|
| - event_debug(("%s: evbuffer_write", __func__));
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_EOF);
|
| - return;
|
| - }
|
| -
|
| - if (n == 0) {
|
| - event_debug(("%s: write nothing", __func__));
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_EOF);
|
| - return;
|
| - }
|
| -
|
| - if (EVBUFFER_LENGTH(evcon->output_buffer) != 0) {
|
| - evhttp_add_event(&evcon->ev,
|
| - evcon->timeout, HTTP_WRITE_TIMEOUT);
|
| - return;
|
| - }
|
| -
|
| - /* Activate our call back */
|
| - if (evcon->cb != NULL)
|
| - (*evcon->cb)(evcon, evcon->cb_arg);
|
| -}
|
| -
|
| -/**
|
| - * Advance the connection state.
|
| - * - If this is an outgoing connection, we've just processed the response;
|
| - * idle or close the connection.
|
| - * - If this is an incoming connection, we've just processed the request;
|
| - * respond.
|
| - */
|
| -static void
|
| -evhttp_connection_done(struct evhttp_connection *evcon)
|
| -{
|
| - struct evhttp_request *req = TAILQ_FIRST(&evcon->requests);
|
| - int con_outgoing = evcon->flags & EVHTTP_CON_OUTGOING;
|
| -
|
| - if (con_outgoing) {
|
| - /* idle or close the connection */
|
| - int need_close;
|
| - TAILQ_REMOVE(&evcon->requests, req, next);
|
| - req->evcon = NULL;
|
| -
|
| - evcon->state = EVCON_IDLE;
|
| -
|
| - need_close =
|
| - evhttp_is_connection_close(req->flags, req->input_headers)||
|
| - evhttp_is_connection_close(req->flags, req->output_headers);
|
| -
|
| - /* check if we got asked to close the connection */
|
| - if (need_close)
|
| - evhttp_connection_reset(evcon);
|
| -
|
| - if (TAILQ_FIRST(&evcon->requests) != NULL) {
|
| - /*
|
| - * We have more requests; reset the connection
|
| - * and deal with the next request.
|
| - */
|
| - if (!evhttp_connected(evcon))
|
| - evhttp_connection_connect(evcon);
|
| - else
|
| - evhttp_request_dispatch(evcon);
|
| - } else if (!need_close) {
|
| - /*
|
| - * The connection is going to be persistent, but we
|
| - * need to detect if the other side closes it.
|
| - */
|
| - evhttp_connection_start_detectclose(evcon);
|
| - }
|
| - } else if (evcon->state != EVCON_DISCONNECTED) {
|
| - /*
|
| - * incoming connection - we need to leave the request on the
|
| - * connection so that we can reply to it.
|
| - */
|
| - evcon->state = EVCON_WRITING;
|
| - }
|
| -
|
| - /* notify the user of the request */
|
| - (*req->cb)(req, req->cb_arg);
|
| -
|
| - /* if this was an outgoing request, we own and it's done. so free it */
|
| - if (con_outgoing) {
|
| - evhttp_request_free(req);
|
| - }
|
| -}
|
| -
|
| -/*
|
| - * Handles reading from a chunked request.
|
| - * return ALL_DATA_READ:
|
| - * all data has been read
|
| - * return MORE_DATA_EXPECTED:
|
| - * more data is expected
|
| - * return DATA_CORRUPTED:
|
| - * data is corrupted
|
| - * return REQUEST_CANCLED:
|
| - * request was canceled by the user calling evhttp_cancel_request
|
| - */
|
| -
|
| -static enum message_read_status
|
| -evhttp_handle_chunked_read(struct evhttp_request *req, struct evbuffer *buf)
|
| -{
|
| - int len;
|
| -
|
| - while ((len = EVBUFFER_LENGTH(buf)) > 0) {
|
| - if (req->ntoread < 0) {
|
| - /* Read chunk size */
|
| - ev_int64_t ntoread;
|
| - char *p = evbuffer_readline(buf);
|
| - char *endp;
|
| - int error;
|
| - if (p == NULL)
|
| - break;
|
| - /* the last chunk is on a new line? */
|
| - if (strlen(p) == 0) {
|
| - free(p);
|
| - continue;
|
| - }
|
| - ntoread = evutil_strtoll(p, &endp, 16);
|
| - error = (*p == '\0' ||
|
| - (*endp != '\0' && *endp != ' ') ||
|
| - ntoread < 0);
|
| - free(p);
|
| - if (error) {
|
| - /* could not get chunk size */
|
| - return (DATA_CORRUPTED);
|
| - }
|
| - req->ntoread = ntoread;
|
| - if (req->ntoread == 0) {
|
| - /* Last chunk */
|
| - return (ALL_DATA_READ);
|
| - }
|
| - continue;
|
| - }
|
| -
|
| - /* don't have enough to complete a chunk; wait for more */
|
| - if (len < req->ntoread)
|
| - return (MORE_DATA_EXPECTED);
|
| -
|
| - /* Completed chunk */
|
| - evbuffer_add(req->input_buffer,
|
| - EVBUFFER_DATA(buf), (size_t)req->ntoread);
|
| - evbuffer_drain(buf, (size_t)req->ntoread);
|
| - req->ntoread = -1;
|
| - if (req->chunk_cb != NULL) {
|
| - (*req->chunk_cb)(req, req->cb_arg);
|
| - evbuffer_drain(req->input_buffer,
|
| - EVBUFFER_LENGTH(req->input_buffer));
|
| - }
|
| - }
|
| -
|
| - return (MORE_DATA_EXPECTED);
|
| -}
|
| -
|
| -static void
|
| -evhttp_read_trailer(struct evhttp_connection *evcon, struct evhttp_request *req)
|
| -{
|
| - struct evbuffer *buf = evcon->input_buffer;
|
| -
|
| - switch (evhttp_parse_headers(req, buf)) {
|
| - case DATA_CORRUPTED:
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_INVALID_HEADER);
|
| - break;
|
| - case ALL_DATA_READ:
|
| - event_del(&evcon->ev);
|
| - evhttp_connection_done(evcon);
|
| - break;
|
| - case MORE_DATA_EXPECTED:
|
| - default:
|
| - evhttp_add_event(&evcon->ev, evcon->timeout,
|
| - HTTP_READ_TIMEOUT);
|
| - break;
|
| - }
|
| -}
|
| -
|
| -static void
|
| -evhttp_read_body(struct evhttp_connection *evcon, struct evhttp_request *req)
|
| -{
|
| - struct evbuffer *buf = evcon->input_buffer;
|
| -
|
| - if (req->chunked) {
|
| - switch (evhttp_handle_chunked_read(req, buf)) {
|
| - case ALL_DATA_READ:
|
| - /* finished last chunk */
|
| - evcon->state = EVCON_READING_TRAILER;
|
| - evhttp_read_trailer(evcon, req);
|
| - return;
|
| - case DATA_CORRUPTED:
|
| - /* corrupted data */
|
| - evhttp_connection_fail(evcon,
|
| - EVCON_HTTP_INVALID_HEADER);
|
| - return;
|
| - case REQUEST_CANCELED:
|
| - /* request canceled */
|
| - evhttp_request_free(req);
|
| - return;
|
| - case MORE_DATA_EXPECTED:
|
| - default:
|
| - break;
|
| - }
|
| - } else if (req->ntoread < 0) {
|
| - /* Read until connection close. */
|
| - evbuffer_add_buffer(req->input_buffer, buf);
|
| - } else if (EVBUFFER_LENGTH(buf) >= req->ntoread) {
|
| - /* Completed content length */
|
| - evbuffer_add(req->input_buffer, EVBUFFER_DATA(buf),
|
| - (size_t)req->ntoread);
|
| - evbuffer_drain(buf, (size_t)req->ntoread);
|
| - req->ntoread = 0;
|
| - evhttp_connection_done(evcon);
|
| - return;
|
| - }
|
| - /* Read more! */
|
| - event_set(&evcon->ev, evcon->fd, EV_READ, evhttp_read, evcon);
|
| - EVHTTP_BASE_SET(evcon, &evcon->ev);
|
| - evhttp_add_event(&evcon->ev, evcon->timeout, HTTP_READ_TIMEOUT);
|
| -}
|
| -
|
| -/*
|
| - * Reads data into a buffer structure until no more data
|
| - * can be read on the file descriptor or we have read all
|
| - * the data that we wanted to read.
|
| - * Execute callback when done.
|
| - */
|
| -
|
| -void
|
| -evhttp_read(int fd, short what, void *arg)
|
| -{
|
| - struct evhttp_connection *evcon = arg;
|
| - struct evhttp_request *req = TAILQ_FIRST(&evcon->requests);
|
| - struct evbuffer *buf = evcon->input_buffer;
|
| - int n, len;
|
| -
|
| - if (what == EV_TIMEOUT) {
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_TIMEOUT);
|
| - return;
|
| - }
|
| - n = evbuffer_read(buf, fd, -1);
|
| - len = EVBUFFER_LENGTH(buf);
|
| - event_debug(("%s: got %d on %d\n", __func__, n, fd));
|
| -
|
| - if (n == -1) {
|
| - if (errno != EINTR && errno != EAGAIN) {
|
| - event_debug(("%s: evbuffer_read", __func__));
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_EOF);
|
| - } else {
|
| - evhttp_add_event(&evcon->ev, evcon->timeout,
|
| - HTTP_READ_TIMEOUT);
|
| - }
|
| - return;
|
| - } else if (n == 0) {
|
| - /* Connection closed */
|
| - evcon->state = EVCON_DISCONNECTED;
|
| - evhttp_connection_done(evcon);
|
| - return;
|
| - }
|
| -
|
| - switch (evcon->state) {
|
| - case EVCON_READING_FIRSTLINE:
|
| - evhttp_read_firstline(evcon, req);
|
| - break;
|
| - case EVCON_READING_HEADERS:
|
| - evhttp_read_header(evcon, req);
|
| - break;
|
| - case EVCON_READING_BODY:
|
| - evhttp_read_body(evcon, req);
|
| - break;
|
| - case EVCON_READING_TRAILER:
|
| - evhttp_read_trailer(evcon, req);
|
| - break;
|
| - case EVCON_DISCONNECTED:
|
| - case EVCON_CONNECTING:
|
| - case EVCON_IDLE:
|
| - case EVCON_WRITING:
|
| - default:
|
| - event_errx(1, "%s: illegal connection state %d",
|
| - __func__, evcon->state);
|
| - }
|
| -}
|
| -
|
| -static void
|
| -evhttp_write_connectioncb(struct evhttp_connection *evcon, void *arg)
|
| -{
|
| - /* This is after writing the request to the server */
|
| - struct evhttp_request *req = TAILQ_FIRST(&evcon->requests);
|
| - assert(req != NULL);
|
| -
|
| - assert(evcon->state == EVCON_WRITING);
|
| -
|
| - /* We are done writing our header and are now expecting the response */
|
| - req->kind = EVHTTP_RESPONSE;
|
| -
|
| - evhttp_start_read(evcon);
|
| -}
|
| -
|
| -/*
|
| - * Clean up a connection object
|
| - */
|
| -
|
| -void
|
| -evhttp_connection_free(struct evhttp_connection *evcon)
|
| -{
|
| - struct evhttp_request *req;
|
| -
|
| - /* notify interested parties that this connection is going down */
|
| - if (evcon->fd != -1) {
|
| - if (evhttp_connected(evcon) && evcon->closecb != NULL)
|
| - (*evcon->closecb)(evcon, evcon->closecb_arg);
|
| - }
|
| -
|
| - /* remove all requests that might be queued on this
|
| - * connection. for server connections, this should be empty.
|
| - * because it gets dequeued either in evhttp_connection_done or
|
| - * evhttp_connection_fail.
|
| - */
|
| - while ((req = TAILQ_FIRST(&evcon->requests)) != NULL) {
|
| - TAILQ_REMOVE(&evcon->requests, req, next);
|
| - evhttp_request_free(req);
|
| - }
|
| -
|
| - if (evcon->http_server != NULL) {
|
| - struct evhttp *http = evcon->http_server;
|
| - TAILQ_REMOVE(&http->connections, evcon, next);
|
| - }
|
| -
|
| - if (event_initialized(&evcon->close_ev))
|
| - event_del(&evcon->close_ev);
|
| -
|
| - if (event_initialized(&evcon->ev))
|
| - event_del(&evcon->ev);
|
| -
|
| - if (evcon->fd != -1)
|
| - EVUTIL_CLOSESOCKET(evcon->fd);
|
| -
|
| - if (evcon->bind_address != NULL)
|
| - free(evcon->bind_address);
|
| -
|
| - if (evcon->address != NULL)
|
| - free(evcon->address);
|
| -
|
| - if (evcon->input_buffer != NULL)
|
| - evbuffer_free(evcon->input_buffer);
|
| -
|
| - if (evcon->output_buffer != NULL)
|
| - evbuffer_free(evcon->output_buffer);
|
| -
|
| - free(evcon);
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_set_local_address(struct evhttp_connection *evcon,
|
| - const char *address)
|
| -{
|
| - assert(evcon->state == EVCON_DISCONNECTED);
|
| - if (evcon->bind_address)
|
| - free(evcon->bind_address);
|
| - if ((evcon->bind_address = strdup(address)) == NULL)
|
| - event_err(1, "%s: strdup", __func__);
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_set_local_port(struct evhttp_connection *evcon,
|
| - unsigned short port)
|
| -{
|
| - assert(evcon->state == EVCON_DISCONNECTED);
|
| - evcon->bind_port = port;
|
| -}
|
| -
|
| -static void
|
| -evhttp_request_dispatch(struct evhttp_connection* evcon)
|
| -{
|
| - struct evhttp_request *req = TAILQ_FIRST(&evcon->requests);
|
| -
|
| - /* this should not usually happy but it's possible */
|
| - if (req == NULL)
|
| - return;
|
| -
|
| - /* delete possible close detection events */
|
| - evhttp_connection_stop_detectclose(evcon);
|
| -
|
| - /* we assume that the connection is connected already */
|
| - assert(evcon->state == EVCON_IDLE);
|
| -
|
| - evcon->state = EVCON_WRITING;
|
| -
|
| - /* Create the header from the store arguments */
|
| - evhttp_make_header(evcon, req);
|
| -
|
| - evhttp_write_buffer(evcon, evhttp_write_connectioncb, NULL);
|
| -}
|
| -
|
| -/* Reset our connection state */
|
| -void
|
| -evhttp_connection_reset(struct evhttp_connection *evcon)
|
| -{
|
| - if (event_initialized(&evcon->ev))
|
| - event_del(&evcon->ev);
|
| -
|
| - if (evcon->fd != -1) {
|
| - /* inform interested parties about connection close */
|
| - if (evhttp_connected(evcon) && evcon->closecb != NULL)
|
| - (*evcon->closecb)(evcon, evcon->closecb_arg);
|
| -
|
| - EVUTIL_CLOSESOCKET(evcon->fd);
|
| - evcon->fd = -1;
|
| - }
|
| - evcon->state = EVCON_DISCONNECTED;
|
| -
|
| - evbuffer_drain(evcon->input_buffer,
|
| - EVBUFFER_LENGTH(evcon->input_buffer));
|
| - evbuffer_drain(evcon->output_buffer,
|
| - EVBUFFER_LENGTH(evcon->output_buffer));
|
| -}
|
| -
|
| -static void
|
| -evhttp_detect_close_cb(int fd, short what, void *arg)
|
| -{
|
| - struct evhttp_connection *evcon = arg;
|
| - evhttp_connection_reset(evcon);
|
| -}
|
| -
|
| -static void
|
| -evhttp_connection_start_detectclose(struct evhttp_connection *evcon)
|
| -{
|
| - evcon->flags |= EVHTTP_CON_CLOSEDETECT;
|
| -
|
| - if (event_initialized(&evcon->close_ev))
|
| - event_del(&evcon->close_ev);
|
| - event_set(&evcon->close_ev, evcon->fd, EV_READ,
|
| - evhttp_detect_close_cb, evcon);
|
| - EVHTTP_BASE_SET(evcon, &evcon->close_ev);
|
| - event_add(&evcon->close_ev, NULL);
|
| -}
|
| -
|
| -static void
|
| -evhttp_connection_stop_detectclose(struct evhttp_connection *evcon)
|
| -{
|
| - evcon->flags &= ~EVHTTP_CON_CLOSEDETECT;
|
| - event_del(&evcon->close_ev);
|
| -}
|
| -
|
| -static void
|
| -evhttp_connection_retry(int fd, short what, void *arg)
|
| -{
|
| - struct evhttp_connection *evcon = arg;
|
| -
|
| - evcon->state = EVCON_DISCONNECTED;
|
| - evhttp_connection_connect(evcon);
|
| -}
|
| -
|
| -/*
|
| - * Call back for asynchronous connection attempt.
|
| - */
|
| -
|
| -static void
|
| -evhttp_connectioncb(int fd, short what, void *arg)
|
| -{
|
| - struct evhttp_connection *evcon = arg;
|
| - int error;
|
| - socklen_t errsz = sizeof(error);
|
| -
|
| - if (what == EV_TIMEOUT) {
|
| - event_debug(("%s: connection timeout for \"%s:%d\" on %d",
|
| - __func__, evcon->address, evcon->port, evcon->fd));
|
| - goto cleanup;
|
| - }
|
| -
|
| - /* Check if the connection completed */
|
| - if (getsockopt(evcon->fd, SOL_SOCKET, SO_ERROR, (void*)&error,
|
| - &errsz) == -1) {
|
| - event_debug(("%s: getsockopt for \"%s:%d\" on %d",
|
| - __func__, evcon->address, evcon->port, evcon->fd));
|
| - goto cleanup;
|
| - }
|
| -
|
| - if (error) {
|
| - event_debug(("%s: connect failed for \"%s:%d\" on %d: %s",
|
| - __func__, evcon->address, evcon->port, evcon->fd,
|
| - strerror(error)));
|
| - goto cleanup;
|
| - }
|
| -
|
| - /* We are connected to the server now */
|
| - event_debug(("%s: connected to \"%s:%d\" on %d\n",
|
| - __func__, evcon->address, evcon->port, evcon->fd));
|
| -
|
| - /* Reset the retry count as we were successful in connecting */
|
| - evcon->retry_cnt = 0;
|
| - evcon->state = EVCON_IDLE;
|
| -
|
| - /* try to start requests that have queued up on this connection */
|
| - evhttp_request_dispatch(evcon);
|
| - return;
|
| -
|
| - cleanup:
|
| - if (evcon->retry_max < 0 || evcon->retry_cnt < evcon->retry_max) {
|
| - evtimer_set(&evcon->ev, evhttp_connection_retry, evcon);
|
| - EVHTTP_BASE_SET(evcon, &evcon->ev);
|
| - evhttp_add_event(&evcon->ev, MIN(3600, 2 << evcon->retry_cnt),
|
| - HTTP_CONNECT_TIMEOUT);
|
| - evcon->retry_cnt++;
|
| - return;
|
| - }
|
| - evhttp_connection_reset(evcon);
|
| -
|
| - /* for now, we just signal all requests by executing their callbacks */
|
| - while (TAILQ_FIRST(&evcon->requests) != NULL) {
|
| - struct evhttp_request *request = TAILQ_FIRST(&evcon->requests);
|
| - TAILQ_REMOVE(&evcon->requests, request, next);
|
| - request->evcon = NULL;
|
| -
|
| - /* we might want to set an error here */
|
| - request->cb(request, request->cb_arg);
|
| - evhttp_request_free(request);
|
| - }
|
| -}
|
| -
|
| -/*
|
| - * Check if we got a valid response code.
|
| - */
|
| -
|
| -static int
|
| -evhttp_valid_response_code(int code)
|
| -{
|
| - if (code == 0)
|
| - return (0);
|
| -
|
| - return (1);
|
| -}
|
| -
|
| -/* Parses the status line of a web server */
|
| -
|
| -static int
|
| -evhttp_parse_response_line(struct evhttp_request *req, char *line)
|
| -{
|
| - char *protocol;
|
| - char *number;
|
| - const char *readable = "";
|
| -
|
| - protocol = strsep(&line, " ");
|
| - if (line == NULL)
|
| - return (-1);
|
| - number = strsep(&line, " ");
|
| - if (line != NULL)
|
| - readable = line;
|
| -
|
| - if (strcmp(protocol, "HTTP/1.0") == 0) {
|
| - req->major = 1;
|
| - req->minor = 0;
|
| - } else if (strcmp(protocol, "HTTP/1.1") == 0) {
|
| - req->major = 1;
|
| - req->minor = 1;
|
| - } else {
|
| - event_debug(("%s: bad protocol \"%s\"",
|
| - __func__, protocol));
|
| - return (-1);
|
| - }
|
| -
|
| - req->response_code = atoi(number);
|
| - if (!evhttp_valid_response_code(req->response_code)) {
|
| - event_debug(("%s: bad response code \"%s\"",
|
| - __func__, number));
|
| - return (-1);
|
| - }
|
| -
|
| - if ((req->response_code_line = strdup(readable)) == NULL)
|
| - event_err(1, "%s: strdup", __func__);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -/* Parse the first line of a HTTP request */
|
| -
|
| -static int
|
| -evhttp_parse_request_line(struct evhttp_request *req, char *line)
|
| -{
|
| - char *method;
|
| - char *uri;
|
| - char *version;
|
| -
|
| - /* Parse the request line */
|
| - method = strsep(&line, " ");
|
| - if (line == NULL)
|
| - return (-1);
|
| - uri = strsep(&line, " ");
|
| - if (line == NULL)
|
| - return (-1);
|
| - version = strsep(&line, " ");
|
| - if (line != NULL)
|
| - return (-1);
|
| -
|
| - /* First line */
|
| - if (strcmp(method, "GET") == 0) {
|
| - req->type = EVHTTP_REQ_GET;
|
| - } else if (strcmp(method, "POST") == 0) {
|
| - req->type = EVHTTP_REQ_POST;
|
| - } else if (strcmp(method, "HEAD") == 0) {
|
| - req->type = EVHTTP_REQ_HEAD;
|
| - } else {
|
| - event_debug(("%s: bad method %s on request %p from %s",
|
| - __func__, method, req, req->remote_host));
|
| - return (-1);
|
| - }
|
| -
|
| - if (strcmp(version, "HTTP/1.0") == 0) {
|
| - req->major = 1;
|
| - req->minor = 0;
|
| - } else if (strcmp(version, "HTTP/1.1") == 0) {
|
| - req->major = 1;
|
| - req->minor = 1;
|
| - } else {
|
| - event_debug(("%s: bad version %s on request %p from %s",
|
| - __func__, version, req, req->remote_host));
|
| - return (-1);
|
| - }
|
| -
|
| - if ((req->uri = strdup(uri)) == NULL) {
|
| - event_debug(("%s: strdup", __func__));
|
| - return (-1);
|
| - }
|
| -
|
| - /* determine if it's a proxy request */
|
| - if (strlen(req->uri) > 0 && req->uri[0] != '/')
|
| - req->flags |= EVHTTP_PROXY_REQUEST;
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -const char *
|
| -evhttp_find_header(const struct evkeyvalq *headers, const char *key)
|
| -{
|
| - struct evkeyval *header;
|
| -
|
| - TAILQ_FOREACH(header, headers, next) {
|
| - if (strcasecmp(header->key, key) == 0)
|
| - return (header->value);
|
| - }
|
| -
|
| - return (NULL);
|
| -}
|
| -
|
| -void
|
| -evhttp_clear_headers(struct evkeyvalq *headers)
|
| -{
|
| - struct evkeyval *header;
|
| -
|
| - for (header = TAILQ_FIRST(headers);
|
| - header != NULL;
|
| - header = TAILQ_FIRST(headers)) {
|
| - TAILQ_REMOVE(headers, header, next);
|
| - free(header->key);
|
| - free(header->value);
|
| - free(header);
|
| - }
|
| -}
|
| -
|
| -/*
|
| - * Returns 0, if the header was successfully removed.
|
| - * Returns -1, if the header could not be found.
|
| - */
|
| -
|
| -int
|
| -evhttp_remove_header(struct evkeyvalq *headers, const char *key)
|
| -{
|
| - struct evkeyval *header;
|
| -
|
| - TAILQ_FOREACH(header, headers, next) {
|
| - if (strcasecmp(header->key, key) == 0)
|
| - break;
|
| - }
|
| -
|
| - if (header == NULL)
|
| - return (-1);
|
| -
|
| - /* Free and remove the header that we found */
|
| - TAILQ_REMOVE(headers, header, next);
|
| - free(header->key);
|
| - free(header->value);
|
| - free(header);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -static int
|
| -evhttp_header_is_valid_value(const char *value)
|
| -{
|
| - const char *p = value;
|
| -
|
| - while ((p = strpbrk(p, "\r\n")) != NULL) {
|
| - /* we really expect only one new line */
|
| - p += strspn(p, "\r\n");
|
| - /* we expect a space or tab for continuation */
|
| - if (*p != ' ' && *p != '\t')
|
| - return (0);
|
| - }
|
| - return (1);
|
| -}
|
| -
|
| -int
|
| -evhttp_add_header(struct evkeyvalq *headers,
|
| - const char *key, const char *value)
|
| -{
|
| - event_debug(("%s: key: %s val: %s\n", __func__, key, value));
|
| -
|
| - if (strchr(key, '\r') != NULL || strchr(key, '\n') != NULL) {
|
| - /* drop illegal headers */
|
| - event_debug(("%s: dropping illegal header key\n", __func__));
|
| - return (-1);
|
| - }
|
| -
|
| - if (!evhttp_header_is_valid_value(value)) {
|
| - event_debug(("%s: dropping illegal header value\n", __func__));
|
| - return (-1);
|
| - }
|
| -
|
| - return (evhttp_add_header_internal(headers, key, value));
|
| -}
|
| -
|
| -static int
|
| -evhttp_add_header_internal(struct evkeyvalq *headers,
|
| - const char *key, const char *value)
|
| -{
|
| - struct evkeyval *header = calloc(1, sizeof(struct evkeyval));
|
| - if (header == NULL) {
|
| - event_warn("%s: calloc", __func__);
|
| - return (-1);
|
| - }
|
| - if ((header->key = strdup(key)) == NULL) {
|
| - free(header);
|
| - event_warn("%s: strdup", __func__);
|
| - return (-1);
|
| - }
|
| - if ((header->value = strdup(value)) == NULL) {
|
| - free(header->key);
|
| - free(header);
|
| - event_warn("%s: strdup", __func__);
|
| - return (-1);
|
| - }
|
| -
|
| - TAILQ_INSERT_TAIL(headers, header, next);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -/*
|
| - * Parses header lines from a request or a response into the specified
|
| - * request object given an event buffer.
|
| - *
|
| - * Returns
|
| - * DATA_CORRUPTED on error
|
| - * MORE_DATA_EXPECTED when we need to read more headers
|
| - * ALL_DATA_READ when all headers have been read.
|
| - */
|
| -
|
| -enum message_read_status
|
| -evhttp_parse_firstline(struct evhttp_request *req, struct evbuffer *buffer)
|
| -{
|
| - char *line;
|
| - enum message_read_status status = ALL_DATA_READ;
|
| -
|
| - line = evbuffer_readline(buffer);
|
| - if (line == NULL)
|
| - return (MORE_DATA_EXPECTED);
|
| -
|
| - switch (req->kind) {
|
| - case EVHTTP_REQUEST:
|
| - if (evhttp_parse_request_line(req, line) == -1)
|
| - status = DATA_CORRUPTED;
|
| - break;
|
| - case EVHTTP_RESPONSE:
|
| - if (evhttp_parse_response_line(req, line) == -1)
|
| - status = DATA_CORRUPTED;
|
| - break;
|
| - default:
|
| - status = DATA_CORRUPTED;
|
| - }
|
| -
|
| - free(line);
|
| - return (status);
|
| -}
|
| -
|
| -static int
|
| -evhttp_append_to_last_header(struct evkeyvalq *headers, const char *line)
|
| -{
|
| - struct evkeyval *header = TAILQ_LAST(headers, evkeyvalq);
|
| - char *newval;
|
| - size_t old_len, line_len;
|
| -
|
| - if (header == NULL)
|
| - return (-1);
|
| -
|
| - old_len = strlen(header->value);
|
| - line_len = strlen(line);
|
| -
|
| - newval = realloc(header->value, old_len + line_len + 1);
|
| - if (newval == NULL)
|
| - return (-1);
|
| -
|
| - memcpy(newval + old_len, line, line_len + 1);
|
| - header->value = newval;
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -enum message_read_status
|
| -evhttp_parse_headers(struct evhttp_request *req, struct evbuffer* buffer)
|
| -{
|
| - char *line;
|
| - enum message_read_status status = MORE_DATA_EXPECTED;
|
| -
|
| - struct evkeyvalq* headers = req->input_headers;
|
| - while ((line = evbuffer_readline(buffer))
|
| - != NULL) {
|
| - char *skey, *svalue;
|
| -
|
| - if (*line == '\0') { /* Last header - Done */
|
| - status = ALL_DATA_READ;
|
| - free(line);
|
| - break;
|
| - }
|
| -
|
| - /* Check if this is a continuation line */
|
| - if (*line == ' ' || *line == '\t') {
|
| - if (evhttp_append_to_last_header(headers, line) == -1)
|
| - goto error;
|
| - free(line);
|
| - continue;
|
| - }
|
| -
|
| - /* Processing of header lines */
|
| - svalue = line;
|
| - skey = strsep(&svalue, ":");
|
| - if (svalue == NULL)
|
| - goto error;
|
| -
|
| - svalue += strspn(svalue, " ");
|
| -
|
| - if (evhttp_add_header(headers, skey, svalue) == -1)
|
| - goto error;
|
| -
|
| - free(line);
|
| - }
|
| -
|
| - return (status);
|
| -
|
| - error:
|
| - free(line);
|
| - return (DATA_CORRUPTED);
|
| -}
|
| -
|
| -static int
|
| -evhttp_get_body_length(struct evhttp_request *req)
|
| -{
|
| - struct evkeyvalq *headers = req->input_headers;
|
| - const char *content_length;
|
| - const char *connection;
|
| -
|
| - content_length = evhttp_find_header(headers, "Content-Length");
|
| - connection = evhttp_find_header(headers, "Connection");
|
| -
|
| - if (content_length == NULL && connection == NULL)
|
| - req->ntoread = -1;
|
| - else if (content_length == NULL &&
|
| - strcasecmp(connection, "Close") != 0) {
|
| - /* Bad combination, we don't know when it will end */
|
| - event_warnx("%s: we got no content length, but the "
|
| - "server wants to keep the connection open: %s.",
|
| - __func__, connection);
|
| - return (-1);
|
| - } else if (content_length == NULL) {
|
| - req->ntoread = -1;
|
| - } else {
|
| - char *endp;
|
| - ev_int64_t ntoread = evutil_strtoll(content_length, &endp, 10);
|
| - if (*content_length == '\0' || *endp != '\0' || ntoread < 0) {
|
| - event_debug(("%s: illegal content length: %s",
|
| - __func__, content_length));
|
| - return (-1);
|
| - }
|
| - req->ntoread = ntoread;
|
| - }
|
| -
|
| - event_debug(("%s: bytes to read: %lld (in buffer %ld)\n",
|
| - __func__, req->ntoread,
|
| - EVBUFFER_LENGTH(req->evcon->input_buffer)));
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -static void
|
| -evhttp_get_body(struct evhttp_connection *evcon, struct evhttp_request *req)
|
| -{
|
| - const char *xfer_enc;
|
| -
|
| - /* If this is a request without a body, then we are done */
|
| - if (req->kind == EVHTTP_REQUEST && req->type != EVHTTP_REQ_POST) {
|
| - evhttp_connection_done(evcon);
|
| - return;
|
| - }
|
| - evcon->state = EVCON_READING_BODY;
|
| - xfer_enc = evhttp_find_header(req->input_headers, "Transfer-Encoding");
|
| - if (xfer_enc != NULL && strcasecmp(xfer_enc, "chunked") == 0) {
|
| - req->chunked = 1;
|
| - req->ntoread = -1;
|
| - } else {
|
| - if (evhttp_get_body_length(req) == -1) {
|
| - evhttp_connection_fail(evcon,
|
| - EVCON_HTTP_INVALID_HEADER);
|
| - return;
|
| - }
|
| - }
|
| - evhttp_read_body(evcon, req);
|
| -}
|
| -
|
| -static void
|
| -evhttp_read_firstline(struct evhttp_connection *evcon,
|
| - struct evhttp_request *req)
|
| -{
|
| - enum message_read_status res;
|
| -
|
| - res = evhttp_parse_firstline(req, evcon->input_buffer);
|
| - if (res == DATA_CORRUPTED) {
|
| - /* Error while reading, terminate */
|
| - event_debug(("%s: bad header lines on %d\n",
|
| - __func__, evcon->fd));
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_INVALID_HEADER);
|
| - return;
|
| - } else if (res == MORE_DATA_EXPECTED) {
|
| - /* Need more header lines */
|
| - evhttp_add_event(&evcon->ev,
|
| - evcon->timeout, HTTP_READ_TIMEOUT);
|
| - return;
|
| - }
|
| -
|
| - evcon->state = EVCON_READING_HEADERS;
|
| - evhttp_read_header(evcon, req);
|
| -}
|
| -
|
| -static void
|
| -evhttp_read_header(struct evhttp_connection *evcon, struct evhttp_request *req)
|
| -{
|
| - enum message_read_status res;
|
| - int fd = evcon->fd;
|
| -
|
| - res = evhttp_parse_headers(req, evcon->input_buffer);
|
| - if (res == DATA_CORRUPTED) {
|
| - /* Error while reading, terminate */
|
| - event_debug(("%s: bad header lines on %d\n", __func__, fd));
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_INVALID_HEADER);
|
| - return;
|
| - } else if (res == MORE_DATA_EXPECTED) {
|
| - /* Need more header lines */
|
| - evhttp_add_event(&evcon->ev,
|
| - evcon->timeout, HTTP_READ_TIMEOUT);
|
| - return;
|
| - }
|
| -
|
| - /* Done reading headers, do the real work */
|
| - switch (req->kind) {
|
| - case EVHTTP_REQUEST:
|
| - event_debug(("%s: checking for post data on %d\n",
|
| - __func__, fd));
|
| - evhttp_get_body(evcon, req);
|
| - break;
|
| -
|
| - case EVHTTP_RESPONSE:
|
| - if (req->response_code == HTTP_NOCONTENT ||
|
| - req->response_code == HTTP_NOTMODIFIED ||
|
| - (req->response_code >= 100 && req->response_code < 200)) {
|
| - event_debug(("%s: skipping body for code %d\n",
|
| - __func__, req->response_code));
|
| - evhttp_connection_done(evcon);
|
| - } else {
|
| - event_debug(("%s: start of read body for %s on %d\n",
|
| - __func__, req->remote_host, fd));
|
| - evhttp_get_body(evcon, req);
|
| - }
|
| - break;
|
| -
|
| - default:
|
| - event_warnx("%s: bad header on %d", __func__, fd);
|
| - evhttp_connection_fail(evcon, EVCON_HTTP_INVALID_HEADER);
|
| - break;
|
| - }
|
| -}
|
| -
|
| -/*
|
| - * Creates a TCP connection to the specified port and executes a callback
|
| - * when finished. Failure or sucess is indicate by the passed connection
|
| - * object.
|
| - *
|
| - * Although this interface accepts a hostname, it is intended to take
|
| - * only numeric hostnames so that non-blocking DNS resolution can
|
| - * happen elsewhere.
|
| - */
|
| -
|
| -struct evhttp_connection *
|
| -evhttp_connection_new(const char *address, unsigned short port)
|
| -{
|
| - struct evhttp_connection *evcon = NULL;
|
| -
|
| - event_debug(("Attempting connection to %s:%d\n", address, port));
|
| -
|
| - if ((evcon = calloc(1, sizeof(struct evhttp_connection))) == NULL) {
|
| - event_warn("%s: calloc failed", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - evcon->fd = -1;
|
| - evcon->port = port;
|
| -
|
| - evcon->timeout = -1;
|
| - evcon->retry_cnt = evcon->retry_max = 0;
|
| -
|
| - if ((evcon->address = strdup(address)) == NULL) {
|
| - event_warn("%s: strdup failed", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - if ((evcon->input_buffer = evbuffer_new()) == NULL) {
|
| - event_warn("%s: evbuffer_new failed", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - if ((evcon->output_buffer = evbuffer_new()) == NULL) {
|
| - event_warn("%s: evbuffer_new failed", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - evcon->state = EVCON_DISCONNECTED;
|
| - TAILQ_INIT(&evcon->requests);
|
| -
|
| - return (evcon);
|
| -
|
| - error:
|
| - if (evcon != NULL)
|
| - evhttp_connection_free(evcon);
|
| - return (NULL);
|
| -}
|
| -
|
| -void evhttp_connection_set_base(struct evhttp_connection *evcon,
|
| - struct event_base *base)
|
| -{
|
| - assert(evcon->base == NULL);
|
| - assert(evcon->state == EVCON_DISCONNECTED);
|
| - evcon->base = base;
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_set_timeout(struct evhttp_connection *evcon,
|
| - int timeout_in_secs)
|
| -{
|
| - evcon->timeout = timeout_in_secs;
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_set_retries(struct evhttp_connection *evcon,
|
| - int retry_max)
|
| -{
|
| - evcon->retry_max = retry_max;
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_set_closecb(struct evhttp_connection *evcon,
|
| - void (*cb)(struct evhttp_connection *, void *), void *cbarg)
|
| -{
|
| - evcon->closecb = cb;
|
| - evcon->closecb_arg = cbarg;
|
| -}
|
| -
|
| -void
|
| -evhttp_connection_get_peer(struct evhttp_connection *evcon,
|
| - char **address, u_short *port)
|
| -{
|
| - *address = evcon->address;
|
| - *port = evcon->port;
|
| -}
|
| -
|
| -int
|
| -evhttp_connection_connect(struct evhttp_connection *evcon)
|
| -{
|
| - if (evcon->state == EVCON_CONNECTING)
|
| - return (0);
|
| -
|
| - evhttp_connection_reset(evcon);
|
| -
|
| - assert(!(evcon->flags & EVHTTP_CON_INCOMING));
|
| - evcon->flags |= EVHTTP_CON_OUTGOING;
|
| -
|
| - evcon->fd = bind_socket(
|
| - evcon->bind_address, evcon->bind_port, 0 /*reuse*/);
|
| - if (evcon->fd == -1) {
|
| - event_debug(("%s: failed to bind to \"%s\"",
|
| - __func__, evcon->bind_address));
|
| - return (-1);
|
| - }
|
| -
|
| - if (socket_connect(evcon->fd, evcon->address, evcon->port) == -1) {
|
| - EVUTIL_CLOSESOCKET(evcon->fd); evcon->fd = -1;
|
| - return (-1);
|
| - }
|
| -
|
| - /* Set up a callback for successful connection setup */
|
| - event_set(&evcon->ev, evcon->fd, EV_WRITE, evhttp_connectioncb, evcon);
|
| - EVHTTP_BASE_SET(evcon, &evcon->ev);
|
| - evhttp_add_event(&evcon->ev, evcon->timeout, HTTP_CONNECT_TIMEOUT);
|
| -
|
| - evcon->state = EVCON_CONNECTING;
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -/*
|
| - * Starts an HTTP request on the provided evhttp_connection object.
|
| - * If the connection object is not connected to the web server already,
|
| - * this will start the connection.
|
| - */
|
| -
|
| -int
|
| -evhttp_make_request(struct evhttp_connection *evcon,
|
| - struct evhttp_request *req,
|
| - enum evhttp_cmd_type type, const char *uri)
|
| -{
|
| - /* We are making a request */
|
| - req->kind = EVHTTP_REQUEST;
|
| - req->type = type;
|
| - if (req->uri != NULL)
|
| - free(req->uri);
|
| - if ((req->uri = strdup(uri)) == NULL)
|
| - event_err(1, "%s: strdup", __func__);
|
| -
|
| - /* Set the protocol version if it is not supplied */
|
| - if (!req->major && !req->minor) {
|
| - req->major = 1;
|
| - req->minor = 1;
|
| - }
|
| -
|
| - assert(req->evcon == NULL);
|
| - req->evcon = evcon;
|
| - assert(!(req->flags & EVHTTP_REQ_OWN_CONNECTION));
|
| -
|
| - TAILQ_INSERT_TAIL(&evcon->requests, req, next);
|
| -
|
| - /* If the connection object is not connected; make it so */
|
| - if (!evhttp_connected(evcon))
|
| - return (evhttp_connection_connect(evcon));
|
| -
|
| - /*
|
| - * If it's connected already and we are the first in the queue,
|
| - * then we can dispatch this request immediately. Otherwise, it
|
| - * will be dispatched once the pending requests are completed.
|
| - */
|
| - if (TAILQ_FIRST(&evcon->requests) == req)
|
| - evhttp_request_dispatch(evcon);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -/*
|
| - * Reads data from file descriptor into request structure
|
| - * Request structure needs to be set up correctly.
|
| - */
|
| -
|
| -void
|
| -evhttp_start_read(struct evhttp_connection *evcon)
|
| -{
|
| - /* Set up an event to read the headers */
|
| - if (event_initialized(&evcon->ev))
|
| - event_del(&evcon->ev);
|
| - event_set(&evcon->ev, evcon->fd, EV_READ, evhttp_read, evcon);
|
| - EVHTTP_BASE_SET(evcon, &evcon->ev);
|
| -
|
| - evhttp_add_event(&evcon->ev, evcon->timeout, HTTP_READ_TIMEOUT);
|
| - evcon->state = EVCON_READING_FIRSTLINE;
|
| -}
|
| -
|
| -static void
|
| -evhttp_send_done(struct evhttp_connection *evcon, void *arg)
|
| -{
|
| - int need_close;
|
| - struct evhttp_request *req = TAILQ_FIRST(&evcon->requests);
|
| - TAILQ_REMOVE(&evcon->requests, req, next);
|
| -
|
| - /* delete possible close detection events */
|
| - evhttp_connection_stop_detectclose(evcon);
|
| -
|
| - need_close =
|
| - (req->minor == 0 &&
|
| - !evhttp_is_connection_keepalive(req->input_headers))||
|
| - evhttp_is_connection_close(req->flags, req->input_headers) ||
|
| - evhttp_is_connection_close(req->flags, req->output_headers);
|
| -
|
| - assert(req->flags & EVHTTP_REQ_OWN_CONNECTION);
|
| - evhttp_request_free(req);
|
| -
|
| - if (need_close) {
|
| - evhttp_connection_free(evcon);
|
| - return;
|
| - }
|
| -
|
| - /* we have a persistent connection; try to accept another request. */
|
| - if (evhttp_associate_new_request_with_connection(evcon) == -1)
|
| - evhttp_connection_free(evcon);
|
| -}
|
| -
|
| -/*
|
| - * Returns an error page.
|
| - */
|
| -
|
| -void
|
| -evhttp_send_error(struct evhttp_request *req, int error, const char *reason)
|
| -{
|
| -#define ERR_FORMAT "<HTML><HEAD>\n" \
|
| - "<TITLE>%d %s</TITLE>\n" \
|
| - "</HEAD><BODY>\n" \
|
| - "<H1>Method Not Implemented</H1>\n" \
|
| - "Invalid method in request<P>\n" \
|
| - "</BODY></HTML>\n"
|
| -
|
| - struct evbuffer *buf = evbuffer_new();
|
| -
|
| - /* close the connection on error */
|
| - evhttp_add_header(req->output_headers, "Connection", "close");
|
| -
|
| - evhttp_response_code(req, error, reason);
|
| -
|
| - evbuffer_add_printf(buf, ERR_FORMAT, error, reason);
|
| -
|
| - evhttp_send_page(req, buf);
|
| -
|
| - evbuffer_free(buf);
|
| -#undef ERR_FORMAT
|
| -}
|
| -
|
| -/* Requires that headers and response code are already set up */
|
| -
|
| -static inline void
|
| -evhttp_send(struct evhttp_request *req, struct evbuffer *databuf)
|
| -{
|
| - struct evhttp_connection *evcon = req->evcon;
|
| -
|
| - if (evcon == NULL) {
|
| - evhttp_request_free(req);
|
| - return;
|
| - }
|
| -
|
| - assert(TAILQ_FIRST(&evcon->requests) == req);
|
| -
|
| - /* we expect no more calls form the user on this request */
|
| - req->userdone = 1;
|
| -
|
| - /* xxx: not sure if we really should expose the data buffer this way */
|
| - if (databuf != NULL)
|
| - evbuffer_add_buffer(req->output_buffer, databuf);
|
| -
|
| - /* Adds headers to the response */
|
| - evhttp_make_header(evcon, req);
|
| -
|
| - evhttp_write_buffer(evcon, evhttp_send_done, NULL);
|
| -}
|
| -
|
| -void
|
| -evhttp_send_reply(struct evhttp_request *req, int code, const char *reason,
|
| - struct evbuffer *databuf)
|
| -{
|
| - evhttp_response_code(req, code, reason);
|
| -
|
| - evhttp_send(req, databuf);
|
| -}
|
| -
|
| -void
|
| -evhttp_send_reply_start(struct evhttp_request *req, int code,
|
| - const char *reason)
|
| -{
|
| - evhttp_response_code(req, code, reason);
|
| - if (req->major == 1 && req->minor == 1) {
|
| - /* use chunked encoding for HTTP/1.1 */
|
| - evhttp_add_header(req->output_headers, "Transfer-Encoding",
|
| - "chunked");
|
| - req->chunked = 1;
|
| - }
|
| - evhttp_make_header(req->evcon, req);
|
| - evhttp_write_buffer(req->evcon, NULL, NULL);
|
| -}
|
| -
|
| -void
|
| -evhttp_send_reply_chunk(struct evhttp_request *req, struct evbuffer *databuf)
|
| -{
|
| - struct evhttp_connection *evcon = req->evcon;
|
| -
|
| - if (evcon == NULL)
|
| - return;
|
| -
|
| - if (req->chunked) {
|
| - evbuffer_add_printf(evcon->output_buffer, "%x\r\n",
|
| - (unsigned)EVBUFFER_LENGTH(databuf));
|
| - }
|
| - evbuffer_add_buffer(evcon->output_buffer, databuf);
|
| - if (req->chunked) {
|
| - evbuffer_add(evcon->output_buffer, "\r\n", 2);
|
| - }
|
| - evhttp_write_buffer(evcon, NULL, NULL);
|
| -}
|
| -
|
| -void
|
| -evhttp_send_reply_end(struct evhttp_request *req)
|
| -{
|
| - struct evhttp_connection *evcon = req->evcon;
|
| -
|
| - if (evcon == NULL) {
|
| - evhttp_request_free(req);
|
| - return;
|
| - }
|
| -
|
| - /* we expect no more calls form the user on this request */
|
| - req->userdone = 1;
|
| -
|
| - if (req->chunked) {
|
| - evbuffer_add(req->evcon->output_buffer, "0\r\n\r\n", 5);
|
| - evhttp_write_buffer(req->evcon, evhttp_send_done, NULL);
|
| - req->chunked = 0;
|
| - } else if (!event_pending(&evcon->ev, EV_WRITE|EV_TIMEOUT, NULL)) {
|
| - /* let the connection know that we are done with the request */
|
| - evhttp_send_done(evcon, NULL);
|
| - } else {
|
| - /* make the callback execute after all data has been written */
|
| - evcon->cb = evhttp_send_done;
|
| - evcon->cb_arg = NULL;
|
| - }
|
| -}
|
| -
|
| -void
|
| -evhttp_response_code(struct evhttp_request *req, int code, const char *reason)
|
| -{
|
| - req->kind = EVHTTP_RESPONSE;
|
| - req->response_code = code;
|
| - if (req->response_code_line != NULL)
|
| - free(req->response_code_line);
|
| - req->response_code_line = strdup(reason);
|
| -}
|
| -
|
| -void
|
| -evhttp_send_page(struct evhttp_request *req, struct evbuffer *databuf)
|
| -{
|
| - if (!req->major || !req->minor) {
|
| - req->major = 1;
|
| - req->minor = 1;
|
| - }
|
| -
|
| - if (req->kind != EVHTTP_RESPONSE)
|
| - evhttp_response_code(req, 200, "OK");
|
| -
|
| - evhttp_clear_headers(req->output_headers);
|
| - evhttp_add_header(req->output_headers, "Content-Type", "text/html");
|
| - evhttp_add_header(req->output_headers, "Connection", "close");
|
| -
|
| - evhttp_send(req, databuf);
|
| -}
|
| -
|
| -static const char uri_chars[256] = {
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
| - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0,
|
| - /* 64 */
|
| - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
| - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1,
|
| - 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
| - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0,
|
| - /* 128 */
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - /* 192 */
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
| -};
|
| -
|
| -/*
|
| - * Helper functions to encode/decode a URI.
|
| - * The returned string must be freed by the caller.
|
| - */
|
| -char *
|
| -evhttp_encode_uri(const char *uri)
|
| -{
|
| - struct evbuffer *buf = evbuffer_new();
|
| - char *p;
|
| -
|
| - for (p = (char *)uri; *p != '\0'; p++) {
|
| - if (uri_chars[(u_char)(*p)]) {
|
| - evbuffer_add(buf, p, 1);
|
| - } else {
|
| - evbuffer_add_printf(buf, "%%%02X", (u_char)(*p));
|
| - }
|
| - }
|
| - evbuffer_add(buf, "", 1);
|
| - p = strdup((char *)EVBUFFER_DATA(buf));
|
| - evbuffer_free(buf);
|
| -
|
| - return (p);
|
| -}
|
| -
|
| -/*
|
| - * @param always_decode_plus: when true we transform plus to space even
|
| - * if we have not seen a ?.
|
| - */
|
| -static int
|
| -evhttp_decode_uri_internal(
|
| - const char *uri, size_t length, char *ret, int always_decode_plus)
|
| -{
|
| - char c;
|
| - int i, j, in_query = always_decode_plus;
|
| -
|
| - for (i = j = 0; uri[i] != '\0'; i++) {
|
| - c = uri[i];
|
| - if (c == '?') {
|
| - in_query = 1;
|
| - } else if (c == '+' && in_query) {
|
| - c = ' ';
|
| - } else if (c == '%' && isxdigit((unsigned char)uri[i+1]) &&
|
| - isxdigit((unsigned char)uri[i+2])) {
|
| - char tmp[] = { uri[i+1], uri[i+2], '\0' };
|
| - c = (char)strtol(tmp, NULL, 16);
|
| - i += 2;
|
| - }
|
| - ret[j++] = c;
|
| - }
|
| - ret[j] = '\0';
|
| -
|
| - return (j);
|
| -}
|
| -
|
| -char *
|
| -evhttp_decode_uri(const char *uri)
|
| -{
|
| - char *ret;
|
| -
|
| - if ((ret = malloc(strlen(uri) + 1)) == NULL)
|
| - event_err(1, "%s: malloc(%lu)", __func__,
|
| - (unsigned long)(strlen(uri) + 1));
|
| -
|
| - evhttp_decode_uri_internal(uri, strlen(uri),
|
| - ret, 0 /*always_decode_plus*/);
|
| -
|
| - return (ret);
|
| -}
|
| -
|
| -/*
|
| - * Helper function to parse out arguments in a query.
|
| - * The arguments are separated by key and value.
|
| - */
|
| -
|
| -void
|
| -evhttp_parse_query(const char *uri, struct evkeyvalq *headers)
|
| -{
|
| - char *line;
|
| - char *argument;
|
| - char *p;
|
| -
|
| - TAILQ_INIT(headers);
|
| -
|
| - /* No arguments - we are done */
|
| - if (strchr(uri, '?') == NULL)
|
| - return;
|
| -
|
| - if ((line = strdup(uri)) == NULL)
|
| - event_err(1, "%s: strdup", __func__);
|
| -
|
| -
|
| - argument = line;
|
| -
|
| - /* We already know that there has to be a ? */
|
| - strsep(&argument, "?");
|
| -
|
| - p = argument;
|
| - while (p != NULL && *p != '\0') {
|
| - char *key, *value, *decoded_value;
|
| - argument = strsep(&p, "&");
|
| -
|
| - value = argument;
|
| - key = strsep(&value, "=");
|
| - if (value == NULL)
|
| - goto error;
|
| -
|
| - if ((decoded_value = malloc(strlen(value) + 1)) == NULL)
|
| - event_err(1, "%s: malloc", __func__);
|
| -
|
| - evhttp_decode_uri_internal(value, strlen(value),
|
| - decoded_value, 1 /*always_decode_plus*/);
|
| - event_debug(("Query Param: %s -> %s\n", key, decoded_value));
|
| - evhttp_add_header_internal(headers, key, decoded_value);
|
| - free(decoded_value);
|
| - }
|
| -
|
| - error:
|
| - free(line);
|
| -}
|
| -
|
| -static struct evhttp_cb *
|
| -evhttp_dispatch_callback(struct httpcbq *callbacks, struct evhttp_request *req)
|
| -{
|
| - struct evhttp_cb *cb;
|
| - size_t offset = 0;
|
| -
|
| - /* Test for different URLs */
|
| - char *p = strchr(req->uri, '?');
|
| - if (p != NULL)
|
| - offset = (size_t)(p - req->uri);
|
| -
|
| - TAILQ_FOREACH(cb, callbacks, next) {
|
| - int res = 0;
|
| - if (p == NULL) {
|
| - res = strcmp(cb->what, req->uri) == 0;
|
| - } else {
|
| - res = ((strncmp(cb->what, req->uri, offset) == 0) &&
|
| - (cb->what[offset] == '\0'));
|
| - }
|
| -
|
| - if (res)
|
| - return (cb);
|
| - }
|
| -
|
| - return (NULL);
|
| -}
|
| -
|
| -static void
|
| -evhttp_handle_request(struct evhttp_request *req, void *arg)
|
| -{
|
| - struct evhttp *http = arg;
|
| - struct evhttp_cb *cb = NULL;
|
| -
|
| - event_debug(("%s: req->uri=%s", __func__, req->uri));
|
| - if (req->uri == NULL) {
|
| - event_debug(("%s: bad request", __func__));
|
| - if (req->evcon->state == EVCON_DISCONNECTED) {
|
| - evhttp_connection_fail(req->evcon, EVCON_HTTP_EOF);
|
| - } else {
|
| - event_debug(("%s: sending error", __func__));
|
| - evhttp_send_error(req, HTTP_BADREQUEST, "Bad Request");
|
| - }
|
| - return;
|
| - }
|
| -
|
| - if ((cb = evhttp_dispatch_callback(&http->callbacks, req)) != NULL) {
|
| - (*cb->cb)(req, cb->cbarg);
|
| - return;
|
| - }
|
| -
|
| - /* Generic call back */
|
| - if (http->gencb) {
|
| - (*http->gencb)(req, http->gencbarg);
|
| - return;
|
| - } else {
|
| - /* We need to send a 404 here */
|
| -#define ERR_FORMAT "<html><head>" \
|
| - "<title>404 Not Found</title>" \
|
| - "</head><body>" \
|
| - "<h1>Not Found</h1>" \
|
| - "<p>The requested URL %s was not found on this server.</p>"\
|
| - "</body></html>\n"
|
| -
|
| - char *escaped_html = evhttp_htmlescape(req->uri);
|
| - struct evbuffer *buf = evbuffer_new();
|
| -
|
| - evhttp_response_code(req, HTTP_NOTFOUND, "Not Found");
|
| -
|
| - evbuffer_add_printf(buf, ERR_FORMAT, escaped_html);
|
| -
|
| - free(escaped_html);
|
| -
|
| - evhttp_send_page(req, buf);
|
| -
|
| - evbuffer_free(buf);
|
| -#undef ERR_FORMAT
|
| - }
|
| -}
|
| -
|
| -static void
|
| -accept_socket(int fd, short what, void *arg)
|
| -{
|
| - struct evhttp *http = arg;
|
| - struct sockaddr_storage ss;
|
| - socklen_t addrlen = sizeof(ss);
|
| - int nfd;
|
| -
|
| - if ((nfd = accept(fd, (struct sockaddr *)&ss, &addrlen)) == -1) {
|
| - if (errno != EAGAIN && errno != EINTR)
|
| - event_warn("%s: bad accept", __func__);
|
| - return;
|
| - }
|
| - if (evutil_make_socket_nonblocking(nfd) < 0)
|
| - return;
|
| -
|
| - evhttp_get_request(http, nfd, (struct sockaddr *)&ss, addrlen);
|
| -}
|
| -
|
| -int
|
| -evhttp_bind_socket(struct evhttp *http, const char *address, u_short port)
|
| -{
|
| - int fd;
|
| - int res;
|
| -
|
| - if ((fd = bind_socket(address, port, 1 /*reuse*/)) == -1)
|
| - return (-1);
|
| -
|
| - if (listen(fd, 128) == -1) {
|
| - event_warn("%s: listen", __func__);
|
| - EVUTIL_CLOSESOCKET(fd);
|
| - return (-1);
|
| - }
|
| -
|
| - res = evhttp_accept_socket(http, fd);
|
| -
|
| - if (res != -1)
|
| - event_debug(("Bound to port %d - Awaiting connections ... ",
|
| - port));
|
| -
|
| - return (res);
|
| -}
|
| -
|
| -int
|
| -evhttp_accept_socket(struct evhttp *http, int fd)
|
| -{
|
| - struct evhttp_bound_socket *bound;
|
| - struct event *ev;
|
| - int res;
|
| -
|
| - bound = malloc(sizeof(struct evhttp_bound_socket));
|
| - if (bound == NULL)
|
| - return (-1);
|
| -
|
| - ev = &bound->bind_ev;
|
| -
|
| - /* Schedule the socket for accepting */
|
| - event_set(ev, fd, EV_READ | EV_PERSIST, accept_socket, http);
|
| - EVHTTP_BASE_SET(http, ev);
|
| -
|
| - res = event_add(ev, NULL);
|
| -
|
| - if (res == -1) {
|
| - free(bound);
|
| - return (-1);
|
| - }
|
| -
|
| - TAILQ_INSERT_TAIL(&http->sockets, bound, next);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -static struct evhttp*
|
| -evhttp_new_object(void)
|
| -{
|
| - struct evhttp *http = NULL;
|
| -
|
| - if ((http = calloc(1, sizeof(struct evhttp))) == NULL) {
|
| - event_warn("%s: calloc", __func__);
|
| - return (NULL);
|
| - }
|
| -
|
| - http->timeout = -1;
|
| -
|
| - TAILQ_INIT(&http->sockets);
|
| - TAILQ_INIT(&http->callbacks);
|
| - TAILQ_INIT(&http->connections);
|
| -
|
| - return (http);
|
| -}
|
| -
|
| -struct evhttp *
|
| -evhttp_new(struct event_base *base)
|
| -{
|
| - struct evhttp *http = evhttp_new_object();
|
| -
|
| - http->base = base;
|
| -
|
| - return (http);
|
| -}
|
| -
|
| -/*
|
| - * Start a web server on the specified address and port.
|
| - */
|
| -
|
| -struct evhttp *
|
| -evhttp_start(const char *address, u_short port)
|
| -{
|
| - struct evhttp *http = evhttp_new_object();
|
| -
|
| - if (evhttp_bind_socket(http, address, port) == -1) {
|
| - free(http);
|
| - return (NULL);
|
| - }
|
| -
|
| - return (http);
|
| -}
|
| -
|
| -void
|
| -evhttp_free(struct evhttp* http)
|
| -{
|
| - struct evhttp_cb *http_cb;
|
| - struct evhttp_connection *evcon;
|
| - struct evhttp_bound_socket *bound;
|
| - int fd;
|
| -
|
| - /* Remove the accepting part */
|
| - while ((bound = TAILQ_FIRST(&http->sockets)) != NULL) {
|
| - TAILQ_REMOVE(&http->sockets, bound, next);
|
| -
|
| - fd = bound->bind_ev.ev_fd;
|
| - event_del(&bound->bind_ev);
|
| - EVUTIL_CLOSESOCKET(fd);
|
| -
|
| - free(bound);
|
| - }
|
| -
|
| - while ((evcon = TAILQ_FIRST(&http->connections)) != NULL) {
|
| - /* evhttp_connection_free removes the connection */
|
| - evhttp_connection_free(evcon);
|
| - }
|
| -
|
| - while ((http_cb = TAILQ_FIRST(&http->callbacks)) != NULL) {
|
| - TAILQ_REMOVE(&http->callbacks, http_cb, next);
|
| - free(http_cb->what);
|
| - free(http_cb);
|
| - }
|
| -
|
| - free(http);
|
| -}
|
| -
|
| -void
|
| -evhttp_set_timeout(struct evhttp* http, int timeout_in_secs)
|
| -{
|
| - http->timeout = timeout_in_secs;
|
| -}
|
| -
|
| -void
|
| -evhttp_set_cb(struct evhttp *http, const char *uri,
|
| - void (*cb)(struct evhttp_request *, void *), void *cbarg)
|
| -{
|
| - struct evhttp_cb *http_cb;
|
| -
|
| - if ((http_cb = calloc(1, sizeof(struct evhttp_cb))) == NULL)
|
| - event_err(1, "%s: calloc", __func__);
|
| -
|
| - http_cb->what = strdup(uri);
|
| - http_cb->cb = cb;
|
| - http_cb->cbarg = cbarg;
|
| -
|
| - TAILQ_INSERT_TAIL(&http->callbacks, http_cb, next);
|
| -}
|
| -
|
| -int
|
| -evhttp_del_cb(struct evhttp *http, const char *uri)
|
| -{
|
| - struct evhttp_cb *http_cb;
|
| -
|
| - TAILQ_FOREACH(http_cb, &http->callbacks, next) {
|
| - if (strcmp(http_cb->what, uri) == 0)
|
| - break;
|
| - }
|
| - if (http_cb == NULL)
|
| - return (-1);
|
| -
|
| - TAILQ_REMOVE(&http->callbacks, http_cb, next);
|
| - free(http_cb->what);
|
| - free(http_cb);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -void
|
| -evhttp_set_gencb(struct evhttp *http,
|
| - void (*cb)(struct evhttp_request *, void *), void *cbarg)
|
| -{
|
| - http->gencb = cb;
|
| - http->gencbarg = cbarg;
|
| -}
|
| -
|
| -/*
|
| - * Request related functions
|
| - */
|
| -
|
| -struct evhttp_request *
|
| -evhttp_request_new(void (*cb)(struct evhttp_request *, void *), void *arg)
|
| -{
|
| - struct evhttp_request *req = NULL;
|
| -
|
| - /* Allocate request structure */
|
| - if ((req = calloc(1, sizeof(struct evhttp_request))) == NULL) {
|
| - event_warn("%s: calloc", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - req->kind = EVHTTP_RESPONSE;
|
| - req->input_headers = calloc(1, sizeof(struct evkeyvalq));
|
| - if (req->input_headers == NULL) {
|
| - event_warn("%s: calloc", __func__);
|
| - goto error;
|
| - }
|
| - TAILQ_INIT(req->input_headers);
|
| -
|
| - req->output_headers = calloc(1, sizeof(struct evkeyvalq));
|
| - if (req->output_headers == NULL) {
|
| - event_warn("%s: calloc", __func__);
|
| - goto error;
|
| - }
|
| - TAILQ_INIT(req->output_headers);
|
| -
|
| - if ((req->input_buffer = evbuffer_new()) == NULL) {
|
| - event_warn("%s: evbuffer_new", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - if ((req->output_buffer = evbuffer_new()) == NULL) {
|
| - event_warn("%s: evbuffer_new", __func__);
|
| - goto error;
|
| - }
|
| -
|
| - req->cb = cb;
|
| - req->cb_arg = arg;
|
| -
|
| - return (req);
|
| -
|
| - error:
|
| - if (req != NULL)
|
| - evhttp_request_free(req);
|
| - return (NULL);
|
| -}
|
| -
|
| -void
|
| -evhttp_request_free(struct evhttp_request *req)
|
| -{
|
| - if (req->remote_host != NULL)
|
| - free(req->remote_host);
|
| - if (req->uri != NULL)
|
| - free(req->uri);
|
| - if (req->response_code_line != NULL)
|
| - free(req->response_code_line);
|
| -
|
| - evhttp_clear_headers(req->input_headers);
|
| - free(req->input_headers);
|
| -
|
| - evhttp_clear_headers(req->output_headers);
|
| - free(req->output_headers);
|
| -
|
| - if (req->input_buffer != NULL)
|
| - evbuffer_free(req->input_buffer);
|
| -
|
| - if (req->output_buffer != NULL)
|
| - evbuffer_free(req->output_buffer);
|
| -
|
| - free(req);
|
| -}
|
| -
|
| -struct evhttp_connection *
|
| -evhttp_request_get_connection(struct evhttp_request *req)
|
| -{
|
| - return req->evcon;
|
| -}
|
| -
|
| -
|
| -void
|
| -evhttp_request_set_chunked_cb(struct evhttp_request *req,
|
| - void (*cb)(struct evhttp_request *, void *))
|
| -{
|
| - req->chunk_cb = cb;
|
| -}
|
| -
|
| -/*
|
| - * Allows for inspection of the request URI
|
| - */
|
| -
|
| -const char *
|
| -evhttp_request_uri(struct evhttp_request *req) {
|
| - if (req->uri == NULL)
|
| - event_debug(("%s: request %p has no uri\n", __func__, req));
|
| - return (req->uri);
|
| -}
|
| -
|
| -/*
|
| - * Takes a file descriptor to read a request from.
|
| - * The callback is executed once the whole request has been read.
|
| - */
|
| -
|
| -static struct evhttp_connection*
|
| -evhttp_get_request_connection(
|
| - struct evhttp* http,
|
| - int fd, struct sockaddr *sa, socklen_t salen)
|
| -{
|
| - struct evhttp_connection *evcon;
|
| - char *hostname = NULL, *portname = NULL;
|
| -
|
| - name_from_addr(sa, salen, &hostname, &portname);
|
| - if (hostname == NULL || portname == NULL) {
|
| - if (hostname) free(hostname);
|
| - if (portname) free(portname);
|
| - return (NULL);
|
| - }
|
| -
|
| - event_debug(("%s: new request from %s:%s on %d\n",
|
| - __func__, hostname, portname, fd));
|
| -
|
| - /* we need a connection object to put the http request on */
|
| - evcon = evhttp_connection_new(hostname, atoi(portname));
|
| - free(hostname);
|
| - free(portname);
|
| - if (evcon == NULL)
|
| - return (NULL);
|
| -
|
| - /* associate the base if we have one*/
|
| - evhttp_connection_set_base(evcon, http->base);
|
| -
|
| - evcon->flags |= EVHTTP_CON_INCOMING;
|
| - evcon->state = EVCON_READING_FIRSTLINE;
|
| -
|
| - evcon->fd = fd;
|
| -
|
| - return (evcon);
|
| -}
|
| -
|
| -static int
|
| -evhttp_associate_new_request_with_connection(struct evhttp_connection *evcon)
|
| -{
|
| - struct evhttp *http = evcon->http_server;
|
| - struct evhttp_request *req;
|
| - if ((req = evhttp_request_new(evhttp_handle_request, http)) == NULL)
|
| - return (-1);
|
| -
|
| - req->evcon = evcon; /* the request ends up owning the connection */
|
| - req->flags |= EVHTTP_REQ_OWN_CONNECTION;
|
| -
|
| - TAILQ_INSERT_TAIL(&evcon->requests, req, next);
|
| -
|
| - req->kind = EVHTTP_REQUEST;
|
| -
|
| - if ((req->remote_host = strdup(evcon->address)) == NULL)
|
| - event_err(1, "%s: strdup", __func__);
|
| - req->remote_port = evcon->port;
|
| -
|
| - evhttp_start_read(evcon);
|
| -
|
| - return (0);
|
| -}
|
| -
|
| -void
|
| -evhttp_get_request(struct evhttp *http, int fd,
|
| - struct sockaddr *sa, socklen_t salen)
|
| -{
|
| - struct evhttp_connection *evcon;
|
| -
|
| - evcon = evhttp_get_request_connection(http, fd, sa, salen);
|
| - if (evcon == NULL)
|
| - return;
|
| -
|
| - /* the timeout can be used by the server to close idle connections */
|
| - if (http->timeout != -1)
|
| - evhttp_connection_set_timeout(evcon, http->timeout);
|
| -
|
| - /*
|
| - * if we want to accept more than one request on a connection,
|
| - * we need to know which http server it belongs to.
|
| - */
|
| - evcon->http_server = http;
|
| - TAILQ_INSERT_TAIL(&http->connections, evcon, next);
|
| -
|
| - if (evhttp_associate_new_request_with_connection(evcon) == -1)
|
| - evhttp_connection_free(evcon);
|
| -}
|
| -
|
| -
|
| -/*
|
| - * Network helper functions that we do not want to export to the rest of
|
| - * the world.
|
| - */
|
| -#if 0 /* Unused */
|
| -static struct addrinfo *
|
| -addr_from_name(char *address)
|
| -{
|
| -#ifdef HAVE_GETADDRINFO
|
| - struct addrinfo ai, *aitop;
|
| - int ai_result;
|
| -
|
| - memset(&ai, 0, sizeof(ai));
|
| - ai.ai_family = AF_INET;
|
| - ai.ai_socktype = SOCK_RAW;
|
| - ai.ai_flags = 0;
|
| - if ((ai_result = getaddrinfo(address, NULL, &ai, &aitop)) != 0) {
|
| - if ( ai_result == EAI_SYSTEM )
|
| - event_warn("getaddrinfo");
|
| - else
|
| - event_warnx("getaddrinfo: %s", gai_strerror(ai_result));
|
| - }
|
| -
|
| - return (aitop);
|
| -#else
|
| - assert(0);
|
| - return NULL; /* XXXXX Use gethostbyname, if this function is ever used. */
|
| -#endif
|
| -}
|
| -#endif
|
| -
|
| -static void
|
| -name_from_addr(struct sockaddr *sa, socklen_t salen,
|
| - char **phost, char **pport)
|
| -{
|
| - char ntop[NI_MAXHOST];
|
| - char strport[NI_MAXSERV];
|
| - int ni_result;
|
| -
|
| -#ifdef HAVE_GETNAMEINFO
|
| - ni_result = getnameinfo(sa, salen,
|
| - ntop, sizeof(ntop), strport, sizeof(strport),
|
| - NI_NUMERICHOST|NI_NUMERICSERV);
|
| -
|
| - if (ni_result != 0) {
|
| - if (ni_result == EAI_SYSTEM)
|
| - event_err(1, "getnameinfo failed");
|
| - else
|
| - event_errx(1, "getnameinfo failed: %s", gai_strerror(ni_result));
|
| - return;
|
| - }
|
| -#else
|
| - ni_result = fake_getnameinfo(sa, salen,
|
| - ntop, sizeof(ntop), strport, sizeof(strport),
|
| - NI_NUMERICHOST|NI_NUMERICSERV);
|
| - if (ni_result != 0)
|
| - return;
|
| -#endif
|
| - *phost = strdup(ntop);
|
| - *pport = strdup(strport);
|
| -}
|
| -
|
| -/* Create a non-blocking socket and bind it */
|
| -/* todo: rename this function */
|
| -static int
|
| -bind_socket_ai(struct addrinfo *ai, int reuse)
|
| -{
|
| - int fd, on = 1, r;
|
| - int serrno;
|
| -
|
| - /* Create listen socket */
|
| - fd = socket(AF_INET, SOCK_STREAM, 0);
|
| - if (fd == -1) {
|
| - event_warn("socket");
|
| - return (-1);
|
| - }
|
| -
|
| - if (evutil_make_socket_nonblocking(fd) < 0)
|
| - goto out;
|
| -
|
| -#ifndef WIN32
|
| - if (fcntl(fd, F_SETFD, 1) == -1) {
|
| - event_warn("fcntl(F_SETFD)");
|
| - goto out;
|
| - }
|
| -#endif
|
| -
|
| - setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&on, sizeof(on));
|
| - if (reuse) {
|
| - setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
|
| - (void *)&on, sizeof(on));
|
| - }
|
| -
|
| - if (ai != NULL) {
|
| - r = bind(fd, ai->ai_addr, ai->ai_addrlen);
|
| - if (r == -1)
|
| - goto out;
|
| - }
|
| -
|
| - return (fd);
|
| -
|
| - out:
|
| - serrno = EVUTIL_SOCKET_ERROR();
|
| - EVUTIL_CLOSESOCKET(fd);
|
| - EVUTIL_SET_SOCKET_ERROR(serrno);
|
| - return (-1);
|
| -}
|
| -
|
| -static struct addrinfo *
|
| -make_addrinfo(const char *address, u_short port)
|
| -{
|
| - struct addrinfo *aitop = NULL;
|
| -
|
| -#ifdef HAVE_GETADDRINFO
|
| - struct addrinfo ai;
|
| - char strport[NI_MAXSERV];
|
| - int ai_result;
|
| -
|
| - memset(&ai, 0, sizeof(ai));
|
| - ai.ai_family = AF_INET;
|
| - ai.ai_socktype = SOCK_STREAM;
|
| - ai.ai_flags = AI_PASSIVE; /* turn NULL host name into INADDR_ANY */
|
| - evutil_snprintf(strport, sizeof(strport), "%d", port);
|
| - if ((ai_result = getaddrinfo(address, strport, &ai, &aitop)) != 0) {
|
| - if ( ai_result == EAI_SYSTEM )
|
| - event_warn("getaddrinfo");
|
| - else
|
| - event_warnx("getaddrinfo: %s", gai_strerror(ai_result));
|
| - return (NULL);
|
| - }
|
| -#else
|
| - static int cur;
|
| - static struct addrinfo ai[2]; /* We will be returning the address of some of this memory so it has to last even after this call. */
|
| - if (++cur == 2) cur = 0; /* allow calling this function twice */
|
| -
|
| - if (fake_getaddrinfo(address, &ai[cur]) < 0) {
|
| - event_warn("fake_getaddrinfo");
|
| - return (NULL);
|
| - }
|
| - aitop = &ai[cur];
|
| - ((struct sockaddr_in *) aitop->ai_addr)->sin_port = htons(port);
|
| -#endif
|
| -
|
| - return (aitop);
|
| -}
|
| -
|
| -static int
|
| -bind_socket(const char *address, u_short port, int reuse)
|
| -{
|
| - int fd;
|
| - struct addrinfo *aitop = NULL;
|
| -
|
| - /* just create an unbound socket */
|
| - if (address == NULL && port == 0)
|
| - return bind_socket_ai(NULL, 0);
|
| -
|
| - aitop = make_addrinfo(address, port);
|
| -
|
| - if (aitop == NULL)
|
| - return (-1);
|
| -
|
| - fd = bind_socket_ai(aitop, reuse);
|
| -
|
| -#ifdef HAVE_GETADDRINFO
|
| - freeaddrinfo(aitop);
|
| -#else
|
| - fake_freeaddrinfo(aitop);
|
| -#endif
|
| -
|
| - return (fd);
|
| -}
|
| -
|
| -static int
|
| -socket_connect(int fd, const char *address, unsigned short port)
|
| -{
|
| - struct addrinfo *ai = make_addrinfo(address, port);
|
| - int res = -1;
|
| -
|
| - if (ai == NULL) {
|
| - event_debug(("%s: make_addrinfo: \"%s:%d\"",
|
| - __func__, address, port));
|
| - return (-1);
|
| - }
|
| -
|
| - if (connect(fd, ai->ai_addr, ai->ai_addrlen) == -1) {
|
| -#ifdef WIN32
|
| - int tmp_error = WSAGetLastError();
|
| - if (tmp_error != WSAEWOULDBLOCK && tmp_error != WSAEINVAL &&
|
| - tmp_error != WSAEINPROGRESS) {
|
| - goto out;
|
| - }
|
| -#else
|
| - if (errno != EINPROGRESS) {
|
| - goto out;
|
| - }
|
| -#endif
|
| - }
|
| -
|
| - /* everything is fine */
|
| - res = 0;
|
| -
|
| -out:
|
| -#ifdef HAVE_GETADDRINFO
|
| - freeaddrinfo(ai);
|
| -#else
|
| - fake_freeaddrinfo(ai);
|
| -#endif
|
| -
|
| - return (res);
|
| -}
|
|
|
Chromium Code Reviews
Issue 1531573008:
move libevent into base (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master