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curl/tests/server/sws.c
Daniel Stenberg 74a299fd08 1. sws now supports two new "commands" and 2. if built with 
CURL_SWS_FORK_ENABLED defined it forks for each new connection and thus can
support any amount of connection clients (used for hiper tests and not for the
standard plain curl test suite)
2006-01-02 12:19:12 +00:00

869 lines
23 KiB
C
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
***************************************************************************/
/* sws.c: simple (silly?) web server
This code was originally graciously donated to the project by Juergen
Wilke. Thanks a bunch!
*/
#include "setup.h" /* portability help from the lib directory */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <ctype.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef _XOPEN_SOURCE_EXTENDED
/* This define is "almost" required to build on HPUX 11 */
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#define ENABLE_CURLX_PRINTF
/* make the curlx header define all printf() functions to use the curlx_*
versions instead */
#include "curlx.h" /* from the private lib dir */
#include "getpart.h"
#include "util.h"
/* include memdebug.h last */
#include "memdebug.h"
/*
* The normal sws build for the plain standard curl test suite has no use for
* fork(), but if you feel wild and crazy and want to setup some more exotic
* tests. Define this and run...
*/
/*#define CURL_SWS_FORK_ENABLED 1 */
#define REQBUFSIZ 150000
#define REQBUFSIZ_TXT "149999"
long prevtestno=-1; /* previous test number we served */
long prevpartno=-1; /* previous part number we served */
bool prevbounce; /* instructs the server to increase the part number for
a test in case the identical testno+partno request
shows up again */
#define RCMD_NORMALREQ 0 /* default request, use the tests file normally */
#define RCMD_IDLE 1 /* told to sit idle */
#define RCMD_STREAM 2 /* told to stream */
struct httprequest {
char reqbuf[REQBUFSIZ]; /* buffer area for the incoming request */
int offset; /* size of the incoming request */
long testno; /* test number found in the request */
long partno; /* part number found in the request */
int open; /* keep connection open info, as found in the request */
bool auth_req; /* authentication required, don't wait for body unless
there's an Authorization header */
bool auth; /* Authorization header present in the incoming request */
size_t cl; /* Content-Length of the incoming request */
bool digest; /* Authorization digest header found */
bool ntlm; /* Authorization ntlm header found */
int rcmd; /* doing a special command, see defines above */
};
int ProcessRequest(struct httprequest *req);
void storerequest(char *reqbuf);
#define DEFAULT_PORT 8999
#ifndef DEFAULT_LOGFILE
#define DEFAULT_LOGFILE "log/sws.log"
#endif
const char *serverlogfile = DEFAULT_LOGFILE;
#define SWSVERSION "cURL test suite HTTP server/0.1"
#define REQUEST_DUMP "log/server.input"
#define RESPONSE_DUMP "log/server.response"
/* very-big-path support */
#define MAXDOCNAMELEN 140000
#define MAXDOCNAMELEN_TXT "139999"
#define REQUEST_KEYWORD_SIZE 256
#define CMD_AUTH_REQUIRED "auth_required"
/* 'idle' means that it will accept the request fine but never respond
any data. Just keep the connection alive. */
#define CMD_IDLE "idle"
/* 'stream' means to send a never-ending stream of data */
#define CMD_STREAM "stream"
#define END_OF_HEADERS "\r\n\r\n"
enum {
DOCNUMBER_NOTHING = -7,
DOCNUMBER_QUIT = -6,
DOCNUMBER_BADCONNECT = -5,
DOCNUMBER_INTERNAL= -4,
DOCNUMBER_CONNECT = -3,
DOCNUMBER_WERULEZ = -2,
DOCNUMBER_404 = -1
};
/* sent as reply to a QUIT */
static const char *docquit =
"HTTP/1.1 200 Goodbye" END_OF_HEADERS;
/* sent as reply to a CONNECT */
static const char *docconnect =
"HTTP/1.1 200 Mighty fine indeed" END_OF_HEADERS;
/* sent as reply to a "bad" CONNECT */
static const char *docbadconnect =
"HTTP/1.1 501 Forbidden you fool" END_OF_HEADERS;
/* send back this on 404 file not found */
static const char *doc404 = "HTTP/1.1 404 Not Found\r\n"
"Server: " SWSVERSION "\r\n"
"Connection: close\r\n"
"Content-Type: text/html"
END_OF_HEADERS
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
"<HTML><HEAD>\n"
"<TITLE>404 Not Found</TITLE>\n"
"</HEAD><BODY>\n"
"<H1>Not Found</H1>\n"
"The requested URL was not found on this server.\n"
"<P><HR><ADDRESS>" SWSVERSION "</ADDRESS>\n" "</BODY></HTML>\n";
#ifdef SIGPIPE
static volatile int sigpipe; /* Why? It's not used */
#endif
#ifdef SIGPIPE
static void sigpipe_handler(int sig)
{
(void)sig; /* prevent warning */
sigpipe = 1;
}
#endif
int ProcessRequest(struct httprequest *req)
{
char *line=req->reqbuf;
char chunked=FALSE;
static char request[REQUEST_KEYWORD_SIZE];
static char doc[MAXDOCNAMELEN];
char logbuf[256];
int prot_major, prot_minor;
char *end;
end = strstr(req->reqbuf, END_OF_HEADERS);
/* try to figure out the request characteristics as soon as possible, but
only once! */
if((req->testno == DOCNUMBER_NOTHING) &&
sscanf(line, "%" REQBUFSIZ_TXT"s %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d",
request,
doc,
&prot_major,
&prot_minor) == 4) {
char *ptr;
/* find the last slash */
ptr = strrchr(doc, '/');
/* get the number after it */
if(ptr) {
FILE *stream;
char *filename;
if((strlen(doc) + strlen(request)) < 200)
sprintf(logbuf, "Got request: %s %s HTTP/%d.%d",
request, doc, prot_major, prot_minor);
else
sprintf(logbuf, "Got a *HUGE* request HTTP/%d.%d",
prot_major, prot_minor);
logmsg(logbuf);
if(!strncmp("/verifiedserver", ptr, 15)) {
logmsg("Are-we-friendly question received");
req->testno = DOCNUMBER_WERULEZ;
return 1; /* done */
}
if(!strncmp("/quit", ptr, 15)) {
logmsg("Request-to-quit received");
req->testno = DOCNUMBER_QUIT;
return 1; /* done */
}
ptr++; /* skip the slash */
/* skip all non-numericals following the slash */
while(*ptr && !isdigit((int)*ptr))
ptr++;
req->testno = strtol(ptr, &ptr, 10);
if(req->testno > 10000) {
req->partno = req->testno % 10000;
req->testno /= 10000;
}
else
req->partno = 0;
sprintf(logbuf, "Requested test number %ld part %ld",
req->testno, req->partno);
logmsg(logbuf);
filename = test2file(req->testno);
stream=fopen(filename, "rb");
if(!stream) {
logmsg("Couldn't open test file %d", req->testno);
req->open = FALSE; /* closes connection */
return 1; /* done */
}
else {
char *cmd = NULL;
size_t cmdsize = 0;
/* get the custom server control "commands" */
cmd = (char *)spitout(stream, "reply", "servercmd", &cmdsize);
fclose(stream);
if(cmdsize) {
logmsg("Found a reply-servercmd section!");
if(!strncmp(CMD_AUTH_REQUIRED, cmd, strlen(CMD_AUTH_REQUIRED))) {
logmsg("instructed to require authorization header");
req->auth_req = TRUE;
}
else if(!strncmp(CMD_IDLE, cmd, strlen(CMD_IDLE))) {
logmsg("instructed to idle");
req->rcmd = RCMD_IDLE;
req->open = TRUE;
}
else if(!strncmp(CMD_STREAM, cmd, strlen(CMD_STREAM))) {
logmsg("instructed to stream");
req->rcmd = RCMD_STREAM;
}
free(cmd);
}
}
}
else {
if(sscanf(req->reqbuf, "CONNECT %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d",
doc, &prot_major, &prot_minor) == 3) {
sprintf(logbuf, "Receiced a CONNECT %s HTTP/%d.%d request",
doc, prot_major, prot_minor);
logmsg(logbuf);
if(prot_major*10+prot_minor == 10)
req->open = FALSE; /* HTTP 1.0 closes connection by default */
if(!strncmp(doc, "bad", 3))
/* if the host name starts with bad, we fake an error here */
req->testno = DOCNUMBER_BADCONNECT;
else if(!strncmp(doc, "test", 4)) {
/* if the host name starts with test, the port number used in the
CONNECT line will be used as test number! */
char *ptr = strchr(doc, ':');
if(ptr)
req->testno = atoi(ptr+1);
else
req->testno = DOCNUMBER_CONNECT;
}
else
req->testno = DOCNUMBER_CONNECT;
}
else {
logmsg("Did not find test number in PATH");
req->testno = DOCNUMBER_404;
}
}
}
if(!end)
/* we don't have a complete request yet! */
return 0;
/* **** Persistancy ****
*
* If the request is a HTTP/1.0 one, we close the connection unconditionally
* when we're done.
*
* If the request is a HTTP/1.1 one, we MUST check for a "Connection:"
* header that might say "close". If it does, we close a connection when
* this request is processed. Otherwise, we keep the connection alive for X
* seconds.
*/
do {
if(!req->cl && curlx_strnequal("Content-Length:", line, 15)) {
/* If we don't ignore content-length, we read it and we read the whole
request including the body before we return. If we've been told to
ignore the content-length, we will return as soon as all headers
have been received */
req->cl = strtol(line+15, &line, 10);
logmsg("Found Content-Length: %d in the request", req->cl);
break;
}
else if(curlx_strnequal("Transfer-Encoding: chunked", line,
strlen("Transfer-Encoding: chunked"))) {
/* chunked data coming in */
chunked = TRUE;
}
if(chunked) {
if(strstr(req->reqbuf, "\r\n0\r\n\r\n"))
/* end of chunks reached */
return 1; /* done */
else
return 0; /* not done */
}
line = strchr(line, '\n');
if(line)
line++;
} while(line);
if(!req->auth && strstr(req->reqbuf, "Authorization:")) {
req->auth = TRUE; /* Authorization: header present! */
if(req->auth_req)
logmsg("Authorization header found, as required");
}
if(!req->digest && strstr(req->reqbuf, "Authorization: Digest")) {
/* If the client is passing this Digest-header, we set the part number
to 1000. Not only to spice up the complexity of this, but to make
Digest stuff to work in the test suite. */
req->partno += 1000;
req->digest = TRUE; /* header found */
logmsg("Received Digest request, sending back data %d", req->partno);
}
else if(!req->ntlm &&
strstr(req->reqbuf, "Authorization: NTLM TlRMTVNTUAAD")) {
/* If the client is passing this type-3 NTLM header */
req->partno += 1002;
req->ntlm = TRUE; /* NTLM found */
logmsg("Received NTLM type-3, sending back data %d", req->partno);
if(req->cl) {
logmsg(" Expecting %d POSTed bytes", req->cl);
}
}
else if(!req->ntlm &&
strstr(req->reqbuf, "Authorization: NTLM TlRMTVNTUAAB")) {
/* If the client is passing this type-1 NTLM header */
req->partno += 1001;
req->ntlm = TRUE; /* NTLM found */
logmsg("Received NTLM type-1, sending back data %d", req->partno);
}
if(strstr(req->reqbuf, "Connection: close"))
req->open = FALSE; /* close connection after this request */
/* If authentication is required and no auth was provided, end now. This
makes the server NOT wait for PUT/POST data and you can then make the
test case send a rejection before any such data has been sent. Test case
154 uses this.*/
if(req->auth_req && !req->auth)
return 1;
if(req->cl) {
if(req->cl <= strlen(end+strlen(END_OF_HEADERS)))
return 1; /* done */
else
return 0; /* not complete yet */
}
return 1; /* done */
}
/* store the entire request in a file */
void storerequest(char *reqbuf)
{
FILE *dump;
dump = fopen(REQUEST_DUMP, "ab"); /* b is for windows-preparing */
if(dump) {
size_t len = strlen(reqbuf);
fwrite(reqbuf, 1, len, dump);
fclose(dump);
logmsg("Wrote request (%d bytes) input to " REQUEST_DUMP,
(int)len);
}
else {
logmsg("Failed to write request input to " REQUEST_DUMP);
}
}
/* return 0 on success, non-zero on failure */
static int get_request(int sock, struct httprequest *req)
{
int fail= FALSE;
char *reqbuf = req->reqbuf;
/*** Init the httpreqest structure properly for the upcoming request ***/
memset(req, 0, sizeof(struct httprequest));
/* here's what should not be 0 from the start */
req->testno = DOCNUMBER_NOTHING; /* safe default */
req->open = TRUE; /* connection should remain open and wait for more
commands */
/*** end of httprequest init ***/
while (req->offset < REQBUFSIZ) {
int got = sread(sock, reqbuf + req->offset, REQBUFSIZ - req->offset);
if (got <= 0) {
if (got < 0) {
perror("recv");
logmsg("recv() returned error");
return DOCNUMBER_INTERNAL;
}
logmsg("Connection closed by client");
reqbuf[req->offset]=0;
/* dump the request receivied so far to the external file */
storerequest(reqbuf);
return DOCNUMBER_INTERNAL;
}
req->offset += got;
reqbuf[req->offset] = 0;
if(ProcessRequest(req))
break;
}
if (req->offset >= REQBUFSIZ) {
logmsg("Request buffer overflow, closing connection");
reqbuf[REQBUFSIZ-1]=0;
fail = TRUE;
/* dump the request to an external file anyway */
}
else
reqbuf[req->offset]=0;
/* dump the request to an external file */
storerequest(reqbuf);
return fail; /* success */
}
/* returns -1 on failure */
static int send_doc(int sock, struct httprequest *req)
{
int written;
size_t count;
const char *buffer;
char *ptr;
FILE *stream;
char *cmd=NULL;
size_t cmdsize=0;
FILE *dump;
int persistant = TRUE;
size_t responsesize;
static char weare[256];
char partbuf[80]="data";
logmsg("Send response number %d part %d", req->testno, req->partno);
switch(req->rcmd) {
default:
case RCMD_NORMALREQ:
break; /* continue with business as usual */
case RCMD_STREAM:
#define STREAMTHIS "a string to stream 01234567890\n"
count = strlen(STREAMTHIS);
while(1) {
written = swrite(sock, STREAMTHIS, count);
if(written != (int)count) {
logmsg("Stopped streaming");
return -1;
}
}
break;
case RCMD_IDLE:
/* Do nothing. Sit idle. Pretend it rains. */
return 0;
}
req->open = FALSE;
if(req->testno < 0) {
switch(req->testno) {
case DOCNUMBER_QUIT:
logmsg("Replying to QUIT");
buffer = docquit;
break;
case DOCNUMBER_WERULEZ:
/* we got a "friends?" question, reply back that we sure are */
logmsg("Identifying ourselves as friends");
sprintf(weare, "HTTP/1.1 200 OK\r\n\r\nWE ROOLZ: %d\r\n",
(int)getpid());
buffer = weare;
break;
case DOCNUMBER_INTERNAL:
logmsg("Bailing out due to internal error");
return -1;
case DOCNUMBER_CONNECT:
logmsg("Replying to CONNECT");
buffer = docconnect;
break;
case DOCNUMBER_BADCONNECT:
logmsg("Replying to a bad CONNECT");
buffer = docbadconnect;
break;
case DOCNUMBER_404:
default:
logmsg("Replying to with a 404");
buffer = doc404;
break;
}
ptr = NULL;
stream=NULL;
count = strlen(buffer);
}
else {
char *filename = test2file(req->testno);
if(0 != req->partno)
sprintf(partbuf, "data%ld", req->partno);
stream=fopen(filename, "rb");
if(!stream) {
logmsg("Couldn't open test file");
return 0;
}
else {
buffer = spitout(stream, "reply", partbuf, &count);
ptr = (char *)buffer;
fclose(stream);
}
/* re-open the same file again */
stream=fopen(filename, "rb");
if(!stream) {
logmsg("Couldn't open test file");
return 0;
}
else {
/* get the custom server control "commands" */
cmd = (char *)spitout(stream, "reply", "postcmd", &cmdsize);
fclose(stream);
}
}
dump = fopen(RESPONSE_DUMP, "ab"); /* b is for windows-preparing */
if(!dump) {
logmsg("couldn't create logfile: " RESPONSE_DUMP);
return -1;
}
/* If the word 'swsclose' is present anywhere in the reply chunk, the
connection will be closed after the data has been sent to the requesting
client... */
if(strstr(buffer, "swsclose") || !count) {
persistant = FALSE;
logmsg("connection close instruction \"swsclose\" found in response");
}
if(strstr(buffer, "swsbounce")) {
prevbounce = TRUE;
logmsg("enable \"swsbounce\" in the next request");
}
else
prevbounce = FALSE;
responsesize = count;
do {
written = swrite(sock, buffer, count);
if (written < 0) {
logmsg("Sending response failed and we bailed out!");
return -1;
}
/* write to file as well */
fwrite(buffer, 1, written, dump);
count -= written;
buffer += written;
} while(count>0);
fclose(dump);
logmsg("Response sent (%d bytes) and written to " RESPONSE_DUMP,
responsesize);
if(ptr)
free(ptr);
if(cmdsize > 0 ) {
char command[32];
int num;
char *ptr=cmd;
do {
if(2 == sscanf(ptr, "%31s %d", command, &num)) {
if(!strcmp("wait", command)) {
logmsg("Told to sleep for %d seconds", num);
sleep(num); /* wait this many seconds */
}
else
logmsg("Unknown command in reply command section");
}
ptr = strchr(ptr, '\n');
if(ptr)
ptr++;
else
ptr = NULL;
} while(ptr && *ptr);
}
if(cmd)
free(cmd);
req->open = persistant;
prevtestno = req->testno;
prevpartno = req->partno;
return 0;
}
char use_ipv6=FALSE;
int main(int argc, char *argv[])
{
struct sockaddr_in me;
#ifdef ENABLE_IPV6
struct sockaddr_in6 me6;
#endif /* ENABLE_IPV6 */
curl_socket_t sock, msgsock;
int flag;
unsigned short port = DEFAULT_PORT;
FILE *pidfile;
char *pidname= (char *)".http.pid";
struct httprequest req;
int rc;
int arg=1;
while(argc>arg) {
if(!strcmp("--version", argv[arg])) {
printf("sws IPv4%s\n",
#ifdef ENABLE_IPV6
"/IPv6"
#else
""
#endif
);
return 0;
}
else if(!strcmp("--pidfile", argv[arg])) {
arg++;
if(argc>arg)
pidname = argv[arg++];
}
else if(!strcmp("--ipv6", argv[arg])) {
#ifdef ENABLE_IPV6
use_ipv6=TRUE;
#endif
arg++;
}
else if(argc>arg) {
if(atoi(argv[arg]))
port = (unsigned short)atoi(argv[arg++]);
if(argc>arg)
path = argv[arg++];
}
}
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
win32_init();
atexit(win32_cleanup);
#else
#ifdef SIGPIPE
#ifdef HAVE_SIGNAL
signal(SIGPIPE, sigpipe_handler);
#endif
#ifdef HAVE_SIGINTERRUPT
siginterrupt(SIGPIPE, 1);
#endif
#endif
#endif
#ifdef ENABLE_IPV6
if(!use_ipv6)
#endif
sock = socket(AF_INET, SOCK_STREAM, 0);
#ifdef ENABLE_IPV6
else
sock = socket(AF_INET6, SOCK_STREAM, 0);
#endif
if (sock < 0) {
perror("opening stream socket");
logmsg("Error opening socket");
exit(1);
}
flag = 1;
if (setsockopt
(sock, SOL_SOCKET, SO_REUSEADDR, (const void *) &flag,
sizeof(int)) < 0) {
perror("setsockopt(SO_REUSEADDR)");
}
#ifdef ENABLE_IPV6
if(!use_ipv6) {
#endif
me.sin_family = AF_INET;
me.sin_addr.s_addr = INADDR_ANY;
me.sin_port = htons(port);
rc = bind(sock, (struct sockaddr *) &me, sizeof(me));
#ifdef ENABLE_IPV6
}
else {
memset(&me6, 0, sizeof(struct sockaddr_in6));
me6.sin6_family = AF_INET6;
me6.sin6_addr = in6addr_any;
me6.sin6_port = htons(port);
rc = bind(sock, (struct sockaddr *) &me6, sizeof(me6));
}
#endif /* ENABLE_IPV6 */
if(rc < 0) {
perror("binding stream socket");
logmsg("Error binding socket");
exit(1);
}
pidfile = fopen(pidname, "w");
if(pidfile) {
fprintf(pidfile, "%d\n", (int)getpid());
fclose(pidfile);
}
else
fprintf(stderr, "Couldn't write pid file\n");
logmsg("Running IPv%d version on port %d",
#ifdef ENABLE_IPV6
(use_ipv6?6:4)
#else
4
#endif
, port );
/* start accepting connections */
listen(sock, 5);
while (1) {
msgsock = accept(sock, NULL, NULL);
if (msgsock == -1) {
printf("MAJOR ERROR: accept() failed!\n");
break;
}
#ifdef CURL_SWS_FORK_ENABLED
/* The fork enabled version just forks off the child and don't care
about it anymore, so don't assume otherwise. Beware and don't do
this at home. */
rc = fork();
if(-1 == rc) {
printf("MAJOR ERROR: fork() failed!\n");
break;
}
/* 0 is returned to the child */
if(0 == rc) {
#endif
logmsg("====> Client connect");
do {
if(get_request(msgsock, &req))
/* non-zero means error, break out of loop */
break;
if(prevbounce) {
/* bounce treatment requested */
if((req.testno == prevtestno) &&
(req.partno == prevpartno)) {
req.partno++;
logmsg("BOUNCE part number to %ld", req.partno);
}
}
send_doc(msgsock, &req);
if((req.testno < 0) && (req.testno != DOCNUMBER_CONNECT)) {
logmsg("special request received, no persistancy");
break;
}
if(!req.open) {
logmsg("instructed to close connection after server-reply");
break;
}
if(req.open)
logmsg("=> persistant connection request ended, awaits new request");
/* if we got a CONNECT, loop and get another request as well! */
} while(req.open || (req.testno == DOCNUMBER_CONNECT));
logmsg("====> Client disconnect");
sclose(msgsock);
if (req.testno == DOCNUMBER_QUIT)
break;
#ifdef CURL_SWS_FORK_ENABLED
}
#endif
}
sclose(sock);
return 0;
}
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