X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=webcit%2Fcontext_loop.c;h=1f38768d1786d7bc8e047413934481bc6225b321;hb=57eba726fbad7b16f7b9624e9d01f16eaccb35b2;hp=3e3302a1b6685fb3983ac4700d671caf94bbf2df;hpb=e739ac98b3d4ec499ac0221bb990b077947e9dd5;p=citadel.git diff --git a/webcit/context_loop.c b/webcit/context_loop.c index 3e3302a1b..1f38768d1 100644 --- a/webcit/context_loop.c +++ b/webcit/context_loop.c @@ -1,120 +1,102 @@ /* - * context_loop.c + * $Id$ * * This is the other half of the webserver. It handles the task of hooking * up HTTP requests with the sessions they belong to, using HTTP cookies to * keep track of things. If the HTTP request doesn't belong to any currently * active session, a new session is started. * - * $Id$ */ -#include -#include -#ifdef HAVE_UNISTD_H -#include -#endif -#include -#ifdef HAVE_FCNTL_H -#include -#endif -#include -#include -#include -#include -#ifdef HAVE_SYS_TIME_H -#include -#endif -#ifdef HAVE_LIMITS_H -#include -#endif -#include -#include -#include -#include -#include -#include -#include #include "webcit.h" #include "webserver.h" +#include "modules_init.h" /* Only one thread may manipulate SessionList at a time... */ pthread_mutex_t SessionListMutex; -struct wcsession *SessionList = NULL; +wcsession *SessionList = NULL; /**< our sessions ????*/ -pthread_key_t MyConKey; /* TSD key for MySession() */ +pthread_key_t MyConKey; /**< TSD key for MySession() */ +HashList *HttpReqTypes = NULL; +HashList *HttpHeaderHandler = NULL; +extern HashList *HandlerHash; +void DestroyHttpHeaderHandler(void *V) +{ + OneHttpHeader *pHdr; + pHdr = (OneHttpHeader*) V; + FreeStrBuf(&pHdr->Val); + free(pHdr); +} -void free_attachments(struct wcsession *sess) { - struct wc_attachment *att; - - while (sess->first_attachment != NULL) { - att = sess->first_attachment; - sess->first_attachment = sess->first_attachment->next; - free(att->data); - free(att); +void shutdown_sessions(void) +{ + wcsession *sptr; + + for (sptr = SessionList; sptr != NULL; sptr = sptr->next) { + sptr->killthis = 1; } } - void do_housekeeping(void) { - struct wcsession *sptr, *ss, *session_to_kill; + wcsession *sptr, *ss; + wcsession *sessions_to_kill = NULL; int num_sessions = 0; static int num_threads = MIN_WORKER_THREADS; - do { - session_to_kill = NULL; - pthread_mutex_lock(&SessionListMutex); - num_sessions = 0; - for (sptr = SessionList; sptr != NULL; sptr = sptr->next) { - ++num_sessions; - - /* Kill idle sessions */ - if ((time(NULL) - (sptr->lastreq)) > - (time_t) WEBCIT_TIMEOUT) { - sptr->killthis = 1; - } - - /* Remove sessions flagged for kill */ - if (sptr->killthis) { - - lprintf(3, "Destroying session %d\n", - sptr->wc_session); + /** + * Lock the session list, moving any candidates for euthanasia into + * a separate list. + */ + pthread_mutex_lock(&SessionListMutex); + num_sessions = 0; + for (sptr = SessionList; sptr != NULL; sptr = sptr->next) { + ++num_sessions; + + /** Kill idle sessions */ + if ((time(NULL) - (sptr->lastreq)) > + (time_t) WEBCIT_TIMEOUT) { + sptr->killthis = 1; + } - /* remove session from linked list */ - if (sptr == SessionList) { - SessionList = SessionList->next; - } - else for (ss=SessionList;ss!=NULL;ss=ss->next) { - if (ss->next == sptr) { - ss->next = ss->next->next; - } - } + /** Remove sessions flagged for kill */ + if (sptr->killthis) { - session_to_kill = sptr; - goto BREAKOUT; + /** remove session from linked list */ + if (sptr == SessionList) { + SessionList = SessionList->next; } - } -BREAKOUT: pthread_mutex_unlock(&SessionListMutex); - - if (session_to_kill != NULL) { - pthread_mutex_lock(&session_to_kill->SessionMutex); - close(session_to_kill->serv_sock); - close(session_to_kill->chat_sock); - if (session_to_kill->preferences != NULL) { - free(session_to_kill->preferences); + else for (ss=SessionList;ss!=NULL;ss=ss->next) { + if (ss->next == sptr) { + ss->next = ss->next->next; + } } - free_attachments(session_to_kill); - pthread_mutex_unlock(&session_to_kill->SessionMutex); - free(session_to_kill); + + sptr->next = sessions_to_kill; + sessions_to_kill = sptr; } + } + pthread_mutex_unlock(&SessionListMutex); - } while (session_to_kill != NULL); + /** + * Now free up and destroy the culled sessions. + */ + while (sessions_to_kill != NULL) { + lprintf(3, "Destroying session %d\n", sessions_to_kill->wc_session); + pthread_mutex_lock(&sessions_to_kill->SessionMutex); + pthread_mutex_unlock(&sessions_to_kill->SessionMutex); + sptr = sessions_to_kill->next; + + session_destroy_modules(&sessions_to_kill); + sessions_to_kill = sptr; + --num_sessions; + } - /* - * See if we need more worker threads + /** + * If there are more sessions than threads, then we should spawn + * more threads ... up to a predefined maximum. */ while ( (num_sessions > num_threads) && (num_threads <= MAX_WORKER_THREADS) ) { @@ -126,7 +108,7 @@ BREAKOUT: pthread_mutex_unlock(&SessionListMutex); } -/* +/* * Wake up occasionally and clean house */ void housekeeping_loop(void) @@ -139,11 +121,9 @@ void housekeeping_loop(void) /* + * Create a Session id * Generate a unique WebCit session ID (which is not the same thing as the * Citadel session ID). - * - * FIXME ... ensure that session number is truly unique - * */ int GenerateSessionID(void) { @@ -157,41 +137,10 @@ int GenerateSessionID(void) } -/* - * Collapse multiple cookies on one line - */ -int req_gets(int sock, char *buf, char *hold) -{ - int a; - - if (strlen(hold) == 0) { - strcpy(buf, ""); - a = client_gets(sock, buf); - if (a<1) return(-1); - } else { - strcpy(buf, hold); - } - strcpy(hold, ""); - - if (!strncasecmp(buf, "Cookie: ", 8)) { - for (a = 0; a < strlen(buf); ++a) - if (buf[a] == ';') { - sprintf(hold, "Cookie: %s", &buf[a + 1]); - buf[a] = 0; - while (isspace(hold[8])) - strcpy(&hold[8], &hold[9]); - return(0); - } - } - - return(0); -} - /* * lingering_close() a`la Apache. see * http://www.apache.org/docs/misc/fin_wait_2.html for rationale */ - int lingering_close(int fd) { char buf[SIZ]; @@ -226,24 +175,235 @@ int lingering_close(int fd) -/* - * Check for bogus requests coming from (for example) brain-dead - * Windoze boxes that are infected with the latest worm-of-the-week. - * If we detect one of these, bail out without bothering our Citadel - * server. + +/** + * \brief Detects a 'mobile' user agent */ -int is_bogus(char *http_cmd) { +int is_mobile_ua(char *user_agent) { + if (strstr(user_agent,"iPhone OS") != NULL) { + return 1; + } else if (strstr(user_agent,"Windows CE") != NULL) { + return 1; + } else if (strstr(user_agent,"SymbianOS") != NULL) { + return 1; + } else if (strstr(user_agent, "Opera Mobi") != NULL) { + return 1; + } else if (strstr(user_agent, "Firefox/2.0.0 Opera 9.51 Beta") != NULL) { + /* For some reason a new install of Opera 9.51beta decided to spoof. */ + return 1; + } + return 0; +} + - if (!strncasecmp(http_cmd, "GET /scripts/root.exe", 21)) return(1); - if (!strncasecmp(http_cmd, "GET /c/winnt", 12)) return(2); - if (!strncasecmp(http_cmd, "GET /MSADC/", 11)) return(3); + +/* + * Look for commonly-found probes of malware such as worms, viruses, trojans, and Microsoft Office. + * Short-circuit these requests so we don't have to send them through the full processing loop. + */ +int is_bogus(StrBuf *http_cmd) {////TODO! + const char *url; + int i, max; + const char *bogus_prefixes[] = { + "/scripts/root.exe", /* Worms and trojans and viruses, oh my! */ + "/c/winnt", + "/MSADC/", + "/_vti", /* Broken Microsoft DAV implementation */ + "/MSOffice", /* Stoopid MSOffice thinks everyone is IIS */ + "/nonexistenshit" /* Exploit found in the wild January 2009 */ + }; + + url = ChrPtr(http_cmd); + if (IsEmptyStr(url)) return(1); + ++url; + + max = sizeof(bogus_prefixes) / sizeof(char *); + + for (i=0; iReqLine = Line; + /* The requesttype... GET, POST... */ + StrBufExtract_token(Buf, Hdr->ReqLine, 0, ' '); + if (GetHash(HttpReqTypes, SKEY(Buf), &vLine) && + (vLine != NULL)) + { + Hdr->eReqType = *(long*)vLine; + } + else { + Hdr->eReqType = eGET; + return 1; + } + StrBufCutLeft(Hdr->ReqLine, StrLength(Buf) + 1); + + /* the HTTP Version... */ + StrBufExtract_token(Buf, Hdr->ReqLine, 1, ' '); + StrBufCutRight(Hdr->ReqLine, StrLength(Buf) + 1); + if ((StrLength(Buf) == 0) || + is_bogus(Hdr->ReqLine)) { + Hdr->eReqType = eGET; + return 1; + } + + Hdr->this_page = NewStrBufDup(Hdr->ReqLine); + /* chop Filename / query arguments */ + Args = strchr(ChrPtr(Hdr->ReqLine), '?'); + if (Args == NULL) /* whe're not that picky about params... TODO: this will spoil '&' in filenames.*/ + Args = strchr(ChrPtr(Hdr->ReqLine), '&'); + if (Args != NULL) { + Args ++; /* skip the ? */ + Hdr->PlainArgs = NewStrBufPlain( + Args, + StrLength(Hdr->ReqLine) - + (Args - ChrPtr(Hdr->ReqLine))); + StrBufCutAt(Hdr->ReqLine, 0, Args - 1); + } /* don't parse them yet, maybe we don't even care... */ + + /* now lookup what we are going to do with this... */ + /* skip first slash */ + StrBufExtract_NextToken(Buf, Hdr->ReqLine, &Pos, '/'); + do { + StrBufExtract_NextToken(Buf, Hdr->ReqLine, &Pos, '/'); + GetHash(HandlerHash, SKEY(Buf), &vHandler), + Hdr->Handler = (WebcitHandler*) vHandler; + if (Hdr->Handler == NULL) + break; + /* are we about to ignore some prefix like webcit/ ? */ + if ((Hdr->Handler->Flags & URLNAMESPACE) == 0) + break; + } while (1); + /* remove the handlername from the URL */ + if (Pos != NULL) { + StrBufCutLeft(Hdr->ReqLine, + Pos - ChrPtr(Hdr->ReqLine)); + } /* + if (Hdr->Handler == NULL) + return 1; +*/ + Hdr->HTTPHeaders = NewHash(1, NULL); + + return 0; +} + +int AnalyseHeaders(ParsedHttpHdrs *Hdr) +{ + OneHttpHeader *pHdr; + void *vHdr; + long HKLen; + const char *HashKey; + HashPos *at = GetNewHashPos(Hdr->HTTPHeaders, 0); + + while (GetNextHashPos(Hdr->HTTPHeaders, at, &HKLen, &HashKey, &vHdr) && + (vHdr != NULL)) { + pHdr = (OneHttpHeader *)vHdr; + if (pHdr->HaveEvaluator) + pHdr->H(pHdr->Val, Hdr); + + } + DeleteHashPos(&at); + return 0; +} + +/*const char *nix(void *vptr) {return ChrPtr( (StrBuf*)vptr);}*/ + +/* + * Read in the request + */ +int ReadHTTPRequset (ParsedHttpHdrs *Hdr) +{ + const char *pch, *pchs, *pche; + OneHttpHeader *pHdr; + StrBuf *Line, *LastLine, *HeaderName; + int nLine = 0; + void *vF; + int isbogus = 0; + + HeaderName = NewStrBuf(); + Hdr->ReadBuf = NewStrBuf(); + LastLine = NULL; + do { + nLine ++; + Line = NewStrBuf(); + + if (ClientGetLine(&Hdr->http_sock, Line, Hdr->ReadBuf, &Hdr->Pos) < 0) return 1; + + if (StrLength(Line) == 0) { + FreeStrBuf(&Line); + continue; + } + if (nLine == 1) { + isbogus = ReadHttpSubject(Hdr, Line, HeaderName); + if (isbogus) break; + continue; + } + + /* Do we need to Unfold? */ + if ((LastLine != NULL) && + (isspace(*ChrPtr(Line)))) { + pch = pchs = ChrPtr(Line); + pche = pchs + StrLength(Line); + while (isspace(*pch) && (pch < pche)) + pch ++; + StrBufCutLeft(Line, pch - pchs); + StrBufAppendBuf(LastLine, Line, 0); + + FreeStrBuf(&Line); + continue; + } + + StrBufSanitizeAscii(Line, 'ยง'); + StrBufExtract_token(HeaderName, Line, 0, ':'); + + pchs = ChrPtr(Line); + pch = pchs + StrLength(HeaderName) + 1; + pche = pchs + StrLength(Line); + while (isspace(*pch) && (pch < pche)) + pch ++; + StrBufCutLeft(Line, pch - pchs); + + StrBufUpCase(HeaderName); + + pHdr = (OneHttpHeader*) malloc(sizeof(OneHttpHeader)); + memset(pHdr, 0, sizeof(OneHttpHeader)); + pHdr->Val = Line; + + if (GetHash(HttpHeaderHandler, SKEY(HeaderName), &vF) && + (vF != NULL)) + { + OneHttpHeader *FHdr = (OneHttpHeader*) vF; + pHdr->H = FHdr->H; + pHdr->HaveEvaluator = 1; + } + Put(Hdr->HTTPHeaders, SKEY(HeaderName), pHdr, DestroyHttpHeaderHandler); + LastLine = Line; + } while (Line != NULL); + + FreeStrBuf(&HeaderName); + + return isbogus; +} + + + +/* + * handle one request + * * This loop gets called once for every HTTP connection made to WebCit. At * this entry point we have an HTTP socket with a browser allegedly on the * other end, but we have not yet bound to a WebCit session. @@ -254,129 +414,122 @@ int is_bogus(char *http_cmd) { * function returns, the worker thread is then free to handle another * transaction. */ -void context_loop(int sock) +void context_loop(int *sock) { - struct httprequest *req = NULL; - struct httprequest *last = NULL; - struct httprequest *hptr; - char buf[SIZ], hold[SIZ]; - int desired_session = 0; - int got_cookie = 0; - struct wcsession *TheSession, *sptr; - int outside_frameset_allowed = 0; - + ParsedHttpHdrs Hdr; + int isbogus = 0; + wcsession *TheSession, *sptr; + struct timeval tx_start; + struct timeval tx_finish; + + gettimeofday(&tx_start, NULL); /* start a stopwatch for performance timing */ + + memset(&Hdr, 0, sizeof(ParsedHttpHdrs)); + Hdr.eReqType = eGET; + Hdr.http_sock = *sock; /* * Find out what it is that the web browser is asking for */ - memset(hold, 0, sizeof(hold)); - do { - if (req_gets(sock, buf, hold) < 0) return; + isbogus = ReadHTTPRequset(&Hdr); - if (!strncasecmp(buf, "Cookie: webcit=", 15)) { - cookie_to_stuff(&buf[15], &desired_session, - NULL, NULL, NULL); - got_cookie = 1; - } - - hptr = (struct httprequest *) - malloc(sizeof(struct httprequest)); - if (req == NULL) - req = hptr; - else - last->next = hptr; - hptr->next = NULL; - last = hptr; - - strcpy(hptr->line, buf); - - } while (strlen(buf) > 0); - - strcpy(buf, req->line); - lprintf(5, "HTTP: %s\n", buf); + if (!isbogus) + isbogus = AnalyseHeaders(&Hdr); +/* + if (isbogus) + StrBufPlain(ReqLine, HKEY("/404")); +*/ - /* Check for bogus requests */ - if (is_bogus(buf)) goto bail; +/* dbg_PrintHash(HTTPHeaders, nix, NULL); */ /* - * If requesting a non-root page, there should already be a cookie - * set. If there isn't, the client browser has cookies turned off - * (or doesn't support them) and we have to barf & bail. - */ - if (!strncasecmp(buf, "GET ", 4)) strcpy(buf, &buf[4]); - else if (!strncasecmp(buf, "HEAD ", 5)) strcpy(buf, &buf[5]); - else if (!strncasecmp(buf, "POST ", 5)) strcpy(buf, &buf[5]); - if (buf[1]==' ') buf[1]=0; - - /* - * While we're at it, gracefully handle requests for the - * robots.txt file... - */ - if (!strncasecmp(buf, "/robots.txt", 11)) { - strcpy(req->line, "GET /static/robots.txt" - "?force_close_session=yes HTTP/1.0"); + * If the request is prefixed by "/webcit" then chop that off. This + * allows a front end web server to forward all /webcit requests to us + * while still using the same web server port for other things. + * / + if (!isbogus && + (StrLength(ReqLine) >= 8) && + (strstr(ChrPtr(ReqLine), "/webcit/")) ) { + StrBufCutLeft(ReqLine, 7); } - /* These are the URL's which may be executed without a - * session cookie already set. If it's not one of these, - * force the session to close because cookies are - * probably disabled on the client browser. - */ - else if ( (strcmp(buf, "/")) - && (strncasecmp(buf, "/listsub", 8)) - && (strncasecmp(buf, "/freebusy", 9)) - && (got_cookie == 0)) { - strcpy(req->line, "GET /static/nocookies.html" - "?force_close_session=yes HTTP/1.0"); + /* Begin parsing the request. * / +#ifdef TECH_PREVIEW + if ((strncmp(ChrPtr(ReqLine), "/sslg", 5) != 0) && + (strncmp(ChrPtr(ReqLine), "/static/", 8) != 0) && + (strncmp(ChrPtr(ReqLine), "/tiny_mce/", 10) != 0) && + (strncmp(ChrPtr(ReqLine), "/wholist_section", 16) != 0) && + (strstr(ChrPtr(ReqLine), "wholist_section") == NULL)) { +#endif + lprintf(5, "HTTP: %s %s\n", ReqStrs[Hdr.eReqType], ChrPtr(ReqLine)); +#ifdef TECH_PREVIEW } +#endif - /* These are the URL's which may be executed outside of the - * main frameset. If it's not one of these, the page will - * need JavaScript added to force the frameset to reload. - */ - if ( (!strcasecmp(buf, "/")) - || (!strcasecmp(buf, "/static/mainframeset.html")) - || (!strcasecmp(buf, "/static/robots.txt")) - || (!strncasecmp(buf, "/do_welcome", 11)) - || (!strncasecmp(buf, "/page_popup", 11)) - || (!strncasecmp(buf, "/page_user", 10)) /* Sometimes this is wrong */ - || (!strncasecmp(buf, "/listsub", 8)) - || (!strncasecmp(buf, "/freebusy", 9)) - || (!strncasecmp(buf, "/termquit", 9)) ) { - outside_frameset_allowed = 1; - } - else { - outside_frameset_allowed = 0; - } +*/ - /* - * See if there's an existing session open with the desired ID + /** + * See if there's an existing session open with the desired ID or user/pass */ TheSession = NULL; - if (desired_session != 0) { + + if (TheSession == NULL) { pthread_mutex_lock(&SessionListMutex); - for (sptr = SessionList; sptr != NULL; sptr = sptr->next) { - if (sptr->wc_session == desired_session) { + for (sptr = SessionList; + ((sptr != NULL) && (TheSession == NULL)); + sptr = sptr->next) { + + /** If HTTP-AUTH, look for a session with matching credentials * / + if ( (////TODO check auth type here... + &&(!strcasecmp(ChrPtr(sptr->httpauth_user), httpauth_user)) + &&(!strcasecmp(ChrPtr(sptr->httpauth_pass), httpauth_pass)) ) { + TheSession = sptr; + } + + /** If cookie-session, look for a session with matching session ID */ + if ( (Hdr.desired_session != 0) && (sptr->wc_session == Hdr.desired_session)) { TheSession = sptr; } + } pthread_mutex_unlock(&SessionListMutex); } - /* + /** * Create a new session if we have to */ if (TheSession == NULL) { lprintf(3, "Creating a new session\n"); - TheSession = (struct wcsession *) - malloc(sizeof(struct wcsession)); - memset(TheSession, 0, sizeof(struct wcsession)); + TheSession = (wcsession *) + malloc(sizeof(wcsession)); + memset(TheSession, 0, sizeof(wcsession)); + TheSession->Hdr = &Hdr; TheSession->serv_sock = (-1); TheSession->chat_sock = (-1); - TheSession->wc_session = GenerateSessionID(); - pthread_mutex_init(&TheSession->SessionMutex, NULL); + + /* If we're recreating a session that expired, it's best to give it the same + * session number that it had before. The client browser ought to pick up + * the new session number and start using it, but in some rare situations it + * doesn't, and that's a Bad Thing because it causes lots of spurious sessions + * to get created. + */ + if (Hdr.desired_session == 0) { + TheSession->wc_session = GenerateSessionID(); + } + else { + TheSession->wc_session = Hdr.desired_session; + } +/* + TheSession->httpauth_user = NewStrBufPlain(httpauth_user, -1); + TheSession->httpauth_pass = NewStrBufPlain(httpauth_user, -1); +*/ + pthread_setspecific(MyConKey, (void *)TheSession); + session_new_modules(TheSession); + pthread_mutex_init(&TheSession->SessionMutex, NULL); pthread_mutex_lock(&SessionListMutex); + TheSession->nonce = rand(); TheSession->next = SessionList; + TheSession->is_mobile = -1; SessionList = TheSession; pthread_mutex_unlock(&SessionListMutex); } @@ -391,16 +544,320 @@ void context_loop(int sock) */ pthread_mutex_lock(&TheSession->SessionMutex); /* bind */ pthread_setspecific(MyConKey, (void *)TheSession); - TheSession->http_sock = sock; + TheSession->lastreq = time(NULL); /* log */ - TheSession->outside_frameset_allowed = outside_frameset_allowed; - session_loop(req); /* do transaction */ + TheSession->Hdr = &Hdr; + + session_attach_modules(TheSession); + session_loop(); /* do transaction */ + + + /* How long did this transaction take? */ + gettimeofday(&tx_finish, NULL); + + lprintf(9, "Transaction [%s] completed in %ld.%06ld seconds.\n", + ChrPtr(Hdr.this_page), + ((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) / 1000000, + ((tx_finish.tv_sec*1000000 + tx_finish.tv_usec) - (tx_start.tv_sec*1000000 + tx_start.tv_usec)) % 1000000 + ); + + session_detach_modules(TheSession); + + TheSession->Hdr = NULL; pthread_mutex_unlock(&TheSession->SessionMutex); /* unbind */ + + http_destroy_modules(&Hdr); +/* TODO + + FreeStrBuf(&c_username); + FreeStrBuf(&c_password); + FreeStrBuf(&c_roomname); + FreeStrBuf(&c_httpauth_user); + FreeStrBuf(&c_httpauth_pass); +*/ /* Free the request buffer */ -bail: while (req != NULL) { - hptr = req->next; - free(req); - req = hptr; + ///FreeStrBuf(&ReqLine); + +} + +void tmplput_nonce(StrBuf *Target, WCTemplputParams *TP) +{ + wcsession *WCC = WC; + StrBufAppendPrintf(Target, "%ld", + (WCC != NULL)? WCC->nonce:0); +} + +void tmplput_current_user(StrBuf *Target, WCTemplputParams *TP) +{ + StrBufAppendTemplate(Target, TP, WC->wc_fullname, 0); +} + +void tmplput_current_room(StrBuf *Target, WCTemplputParams *TP) +{ + StrBufAppendTemplate(Target, TP, WC->wc_roomname, 0); +} + + +void Header_HandleCookie(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + hdr->RawCookie = Line; + if (hdr->DontNeedAuth) + return; +/* + c_username = NewStrBuf(); + c_password = NewStrBuf(); + c_roomname = NewStrBuf(); + safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string); + c_httpauth_user = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER)); + c_httpauth_pass = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS)); +*/ + cookie_to_stuff(Line, &hdr->desired_session, + hdr->c_username, + hdr->c_password, + hdr->c_roomname); + hdr->got_cookie = 1; +} + + + /* + * Browser-based sessions use cookies for session authentication + * / + if (!isbogus && + GetHash(HTTPHeaders, HKEY("COOKIE"), &vLine) && + (vLine != NULL)) { + cookie_to_stuff(vLine, &desired_session, + NULL, NULL, NULL); + got_cookie = 1; + } + */ + /* + * GroupDAV-based sessions use HTTP authentication + */ +/* + if (!isbogus && + GetHash(HTTPHeaders, HKEY("AUTHORIZATION"), &vLine) && + (vLine != NULL)) { + Line = (StrBuf*)vLine; + if (strncasecmp(ChrPtr(Line), "Basic", 5) == 0) { + StrBufCutLeft(Line, 6); + CtdlDecodeBase64(httpauth_string, ChrPtr(Line), StrLength(Line)); + extract_token(httpauth_user, httpauth_string, 0, ':', sizeof httpauth_user); + extract_token(httpauth_pass, httpauth_string, 1, ':', sizeof httpauth_pass); + } + else + lprintf(1, "Authentication scheme not supported! [%s]\n", ChrPtr(Line)); + } + +*/ +void Header_HandleAuth(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + const char *Pos = NULL; + StrBufDecodeBase64(Line); + StrBufExtract_NextToken(hdr->c_username, Line, &Pos, ':'); + StrBufExtract_NextToken(hdr->c_password, Line, &Pos, ':'); +} + +void Header_HandleContentLength(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + hdr->ContentLength = StrToi(Line); +} + +void Header_HandleContentType(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + hdr->ContentType = Line; +} + +void Header_HandleUserAgent(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + hdr->user_agent = Line; +#ifdef TECH_PREVIEW +/* TODO: do this later on session creating + if ((WCC->is_mobile < 0) && is_mobile_ua(&buf[12])) { + WCC->is_mobile = 1; + } + else { + WCC->is_mobile = 0; + } +*/ +#endif +} + + +void Header_HandleHost(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + if ((follow_xff) && (hdr->http_host != NULL)) + return; + else + hdr->http_host = Line; +} + +void Header_HandleXFFHost(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + if (follow_xff) + hdr->http_host = Line; +} + + +void Header_HandleXFF(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + hdr->browser_host = Line; + + while (StrBufNum_tokens(hdr->browser_host, ',') > 1) { + StrBufRemove_token(hdr->browser_host, 0, ','); + } + StrBufTrim(hdr->browser_host); +} + +void Header_HandleIfModSince(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + hdr->if_modified_since = httpdate_to_timestamp(Line); +} + +void Header_HandleAcceptEncoding(StrBuf *Line, ParsedHttpHdrs *hdr) +{ + /* + * Can we compress? + */ + if (strstr(&ChrPtr(Line)[16], "gzip")) { + hdr->gzip_ok = 1; + } +} + +/* +{ + c_username = NewStrBuf(); + c_password = NewStrBuf(); + c_roomname = NewStrBuf(); + safestrncpy(c_httpauth_string, "", sizeof c_httpauth_string); + c_httpauth_user = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_USER)); + c_httpauth_pass = NewStrBufPlain(HKEY(DEFAULT_HTTPAUTH_PASS)); +} +*/ + /* * + * These are the URL's which may be executed without a + * session cookie already set. If it's not one of these, + * force the session to close because cookies are + * probably disabled on the client browser. + * / + else if ( (StrLength(ReqLine) > 1 ) + && (strncasecmp(ChrPtr(ReqLine), "/404", 4)) + && (Hdr.got_cookie == 0)) { + StrBufPlain(ReqLine, + HKEY("/static/nocookies.html" + "?force_close_session=yes")); } +*/ +const char *ReqStrs[eNONE] = { + "GET", + "POST", + "OPTIONS", + "PROPFIND", + "PUT", + "DELETE", + "HEAD", + "MOVE", + "COPY" +}; + +void +ServerStartModule_CONTEXT +(void) +{ + long *v; + HttpReqTypes = NewHash(1, NULL); + HttpHeaderHandler = NewHash(1, NULL); + + v = malloc(sizeof(long)); + *v = eGET; + Put(HttpReqTypes, HKEY("GET"), v, NULL); + + v = malloc(sizeof(long)); + *v = ePOST; + Put(HttpReqTypes, HKEY("POST"), v, NULL); + + v = malloc(sizeof(long)); + *v = eOPTIONS; + Put(HttpReqTypes, HKEY("OPTIONS"), v, NULL); + + v = malloc(sizeof(long)); + *v = ePROPFIND; + Put(HttpReqTypes, HKEY("PROPFIND"), v, NULL); + + v = malloc(sizeof(long)); + *v = ePUT; + Put(HttpReqTypes, HKEY("PUT"), v, NULL); + + v = malloc(sizeof(long)); + *v = eDELETE; + Put(HttpReqTypes, HKEY("DELETE"), v, NULL); + + v = malloc(sizeof(long)); + *v = eHEAD; + Put(HttpReqTypes, HKEY("HEAD"), v, NULL); + + v = malloc(sizeof(long)); + *v = eMOVE; + Put(HttpReqTypes, HKEY("MOVE"), v, NULL); + + v = malloc(sizeof(long)); + *v = eCOPY; + Put(HttpReqTypes, HKEY("COPY"), v, NULL); +} + +void +ServerShutdownModule_CONTEXT +(void) +{ + DeleteHash(&HttpReqTypes); + DeleteHash(&HttpHeaderHandler); +} + +void RegisterHeaderHandler(const char *Name, long Len, Header_Evaluator F) +{ + OneHttpHeader *pHdr; + pHdr = (OneHttpHeader*) malloc(sizeof(OneHttpHeader)); + memset(pHdr, 0, sizeof(OneHttpHeader)); + pHdr->H = F; + Put(HttpHeaderHandler, Name, Len, pHdr, DestroyHttpHeaderHandler); +} +extern void blank_page(void); ///TODO: remove me +void +InitModule_CONTEXT +(void) +{ + RegisterHeaderHandler(HKEY("COOKIE"), Header_HandleCookie); + RegisterHeaderHandler(HKEY("AUTHORIZATION"), Header_HandleAuth); + RegisterHeaderHandler(HKEY("CONTENT-LENGTH"), Header_HandleContentLength); + RegisterHeaderHandler(HKEY("CONTENT-TYPE"), Header_HandleContentType); + RegisterHeaderHandler(HKEY("USER-AGENT"), Header_HandleUserAgent); + RegisterHeaderHandler(HKEY("X-FORWARDED-HOST"), Header_HandleXFFHost); + RegisterHeaderHandler(HKEY("HOST"), Header_HandleHost); + RegisterHeaderHandler(HKEY("X-FORWARDED-FOR"), Header_HandleXFF); + RegisterHeaderHandler(HKEY("ACCEPT-ENCODING"), Header_HandleAcceptEncoding); + RegisterHeaderHandler(HKEY("IF-MODIFIED-SINCE"), Header_HandleIfModSince); + + RegisterNamespace("CURRENT_USER", 0, 1, tmplput_current_user, CTX_NONE); + RegisterNamespace("CURRENT_ROOM", 0, 1, tmplput_current_room, CTX_NONE); + RegisterNamespace("NONCE", 0, 0, tmplput_nonce, 0); + + + + WebcitAddUrlHandler(HKEY("blank"), blank_page, ANONYMOUS|BOGUS); + + WebcitAddUrlHandler(HKEY("webcit"), blank_page, URLNAMESPACE); +} + + + +void +HttpDestroyModule_CONTEXT +(ParsedHttpHdrs *httpreq) +{ + FreeStrBuf(&httpreq->ReqLine); + FreeStrBuf(&httpreq->ReadBuf); + FreeStrBuf(&httpreq->PlainArgs); + FreeStrBuf(&httpreq->this_page); + DeleteHash(&httpreq->HTTPHeaders); + }