+++ /dev/null
-// Functions which handle communication with the Citadel server.
-//
-// Copyright (c) 1996-2021 by the citadel.org team
-//
-// This program is open source software. You can redistribute it and/or
-// modify it under the terms of the GNU General Public License, version 3.
-
-#include "webcit.h"
-#include "webserver.h"
-
-HashList *EmbeddableMimes = NULL;
-StrBuf *EmbeddableMimeStrs = NULL;
-
-void SetInlinMimeRenderers(void) {
- StrBuf *Buf;
-
- Buf = NewStrBuf();
-
- /* Tell the server what kind of richtext we prefer */
- serv_putbuf(EmbeddableMimeStrs);
- StrBuf_ServGetln(Buf);
-
- FreeStrBuf(&Buf);
-}
-
-
-void DeleteServInfo(ServInfo **FreeMe) {
- if (*FreeMe == NULL)
- return;
- FreeStrBuf(&(*FreeMe)->serv_nodename);
- FreeStrBuf(&(*FreeMe)->serv_humannode);
- FreeStrBuf(&(*FreeMe)->serv_fqdn);
- FreeStrBuf(&(*FreeMe)->serv_software);
- FreeStrBuf(&(*FreeMe)->serv_bbs_city);
- FreeStrBuf(&(*FreeMe)->serv_sysadm);
- FreeStrBuf(&(*FreeMe)->serv_default_cal_zone);
- FreeStrBuf(&(*FreeMe)->serv_svn_revision);
- free(*FreeMe);
- *FreeMe = NULL;
-}
-
-/*
- * get info about the server we've connected to
- *
- * browser_host the citadel we want to connect to
- * user_agent which browser uses our client?
- */
-ServInfo *get_serv_info(StrBuf *browser_host, StrBuf *user_agent) {
- ServInfo *info;
- StrBuf *Buf;
- int a;
- int rc;
-
- Buf = NewStrBuf();
-
- /* Tell the server what kind of client is connecting */
- serv_printf("IDEN %d|%d|%d|%s|%s",
- DEVELOPER_ID,
- CLIENT_ID,
- CLIENT_VERSION,
- ChrPtr(user_agent),
- ChrPtr(browser_host)
- );
- StrBuf_ServGetln(Buf);
- if (GetServerStatus(Buf, NULL) != 2) {
- syslog(LOG_WARNING, "get_serv_info(IDEN): unexpected answer [%s]\n",
- ChrPtr(Buf));
- FreeStrBuf(&Buf);
- return NULL;
- }
-
- /*
- * Tell the server that when we save a calendar event, we
- * want invitations to be generated by the Citadel server
- * instead of by the client.
- */
- serv_puts("ICAL sgi|1");
- StrBuf_ServGetln(Buf);
- if (GetServerStatus(Buf, NULL) != 2) {
- syslog(LOG_WARNING, "get_serv_info(ICAL sgi|1): unexpected answer [%s]\n",
- ChrPtr(Buf));
- FreeStrBuf(&Buf);
- return NULL;
- }
-
- /* Now ask the server to tell us a little bit about itself... */
- serv_puts("INFO");
- StrBuf_ServGetln(Buf);
- if (GetServerStatus(Buf, NULL) != 1) {
- syslog(LOG_WARNING, "get_serv_info(INFO sgi|1): unexpected answer [%s]\n",
- ChrPtr(Buf));
- FreeStrBuf(&Buf);
- return NULL;
- }
-
- info = (ServInfo*)malloc(sizeof(ServInfo));
- memset(info, 0, sizeof(ServInfo));
- a = 0;
- while (rc = StrBuf_ServGetln(Buf),
- (rc >= 0) &&
- ((rc != 3) ||
- strcmp(ChrPtr(Buf), "000")))
- {
- switch (a) {
- case 0:
- info->serv_pid = StrToi(Buf);
- WC->ctdl_pid = info->serv_pid;
- break;
- case 1:
- info->serv_nodename = NewStrBufDup(Buf);
- break;
- case 2:
- info->serv_humannode = NewStrBufDup(Buf);
- break;
- case 3:
- info->serv_fqdn = NewStrBufDup(Buf);
- break;
- case 4:
- info->serv_software = NewStrBufDup(Buf);
- break;
- case 5:
- info->serv_rev_level = StrToi(Buf);
- break;
- case 6:
- info->serv_bbs_city = NewStrBufDup(Buf);
- break;
- case 7:
- info->serv_sysadm = NewStrBufDup(Buf);
- break;
- case 14:
- info->serv_supports_ldap = StrToi(Buf);
- break;
- case 15:
- info->serv_newuser_disabled = StrToi(Buf);
- break;
- case 16:
- info->serv_default_cal_zone = NewStrBufDup(Buf);
- break;
- case 20:
- info->serv_supports_sieve = StrToi(Buf);
- break;
- case 21:
- info->serv_fulltext_enabled = StrToi(Buf);
- break;
- case 22:
- info->serv_svn_revision = NewStrBufDup(Buf);
- break;
- case 23:
- info->serv_supports_openid = StrToi(Buf);
- break;
- case 24:
- info->serv_supports_guest = StrToi(Buf);
- break;
- }
- ++a;
- }
- FreeStrBuf(&Buf);
- return info;
-}
-
-int GetConnected (void) {
- StrBuf *Buf;
-
- if (WC->ReadBuf == NULL) {
- WC->ReadBuf = NewStrBufPlain(NULL, SIZ * 4);
- }
-
- static char serv_sock_name[PATH_MAX] = "";
- if (IsEmptyStr(serv_sock_name)) {
- snprintf(serv_sock_name, sizeof serv_sock_name, "%s/citadel.socket", ctdl_dir);
- }
- WC->serv_sock = connect_to_citadel(serv_sock_name);
-
- if (WC->serv_sock < 0) {
- WC->connected = 0;
- FreeStrBuf(&WC->ReadBuf);
- return 1;
- }
- else {
- long Status;
- int short_status;
- Buf = NewStrBuf();
- WC->connected = 1;
- StrBuf_ServGetln(Buf); /* get the server greeting */
- short_status = GetServerStatus(Buf, &Status);
- FreeStrBuf(&Buf);
-
- /* Server isn't ready for us? */
- if (short_status != 2) {
- if (Status == 551) {
- hprintf("HTTP/1.1 503 Service Unavailable\r\n");
- hprintf("Content-type: text/plain; charset=utf-8\r\n");
- wc_printf(_("This server is already serving its maximum number of users and cannot accept any additional logins at this time. Please try again later or contact your system administrator."));
- }
- else {
- wc_printf("%ld %s\n",
- Status,
- _("Received unexpected answer from Citadel server; bailing out.")
- );
- hprintf("HTTP/1.1 502 Bad Gateway\r\n");
- hprintf("Content-type: text/plain; charset=utf-8\r\n");
- }
- end_burst();
- end_webcit_session();
- return 1;
- }
-
- /*
- * From what host is our user connecting? Go with
- * the host at the other end of the HTTP socket,
- * unless we are following X-Forwarded-For: headers
- * and such a header has already turned up something.
- */
- if ( (!follow_xff) || (StrLength(WC->Hdr->HR.browser_host) == 0) ) {
- if (WC->Hdr->HR.browser_host == NULL) {
- WC->Hdr->HR.browser_host = NewStrBuf();
- Put(WC->Hdr->HTTPHeaders, HKEY("FreeMeWithTheOtherHeaders"),
- WC->Hdr->HR.browser_host, HFreeStrBuf);
- }
- locate_host(WC->Hdr->HR.browser_host, WC->Hdr->http_sock);
- }
- if (WC->serv_info == NULL) {
- WC->serv_info = get_serv_info(WC->Hdr->HR.browser_host, WC->Hdr->HR.user_agent);
- }
- if (WC->serv_info == NULL){
- begin_burst();
- wc_printf(_("Received unexpected answer from Citadel server; bailing out."));
- hprintf("HTTP/1.1 502 Bad Gateway\r\n");
- hprintf("Content-type: text/plain; charset=utf-8\r\n");
- end_burst();
- end_webcit_session();
- return 1;
- }
- if (WC->serv_info->serv_rev_level < MINIMUM_CIT_VERSION) {
- begin_burst();
- wc_printf(_("You are connected to a Citadel "
- "server running Citadel %d.%02d. \n"
- "In order to run this version of WebCit "
- "you must also have Citadel %d.%02d or"
- " newer.\n\n\n"),
- WC->serv_info->serv_rev_level,
- 0,
- MINIMUM_CIT_VERSION,
- 0
- );
- hprintf("HTTP/1.1 200 OK\r\n");
- hprintf("Content-type: text/plain; charset=utf-8\r\n");
- end_burst();
- end_webcit_session();
- return 1;
- }
- SetInlinMimeRenderers();
- }
- return 0;
-}
-
-
-void FmOut(StrBuf *Target, const char *align, const StrBuf *Source) {
- const char *ptr, *pte;
- const char *BufPtr = NULL;
- StrBuf *Line = NewStrBufPlain(NULL, SIZ);
- StrBuf *Line1 = NewStrBufPlain(NULL, SIZ);
- StrBuf *Line2 = NewStrBufPlain(NULL, SIZ);
- int bn = 0;
- int bq = 0;
- int i;
- long len;
- int intext = 0;
-
- StrBufAppendPrintf(Target, "<div class=\"fmout-%s\">\n", align);
-
- if (StrLength(Source) > 0)
- do
- {
- StrBufSipLine(Line, Source, &BufPtr);
- bq = 0;
- i = 0;
- ptr = ChrPtr(Line);
- len = StrLength(Line);
- pte = ptr + len;
-
- if ((intext == 1) && (isspace(*ptr))) {
- StrBufAppendBufPlain(Target, HKEY("<br>"), 0);
- }
- intext = 1;
- if (isspace(*ptr)) while ((ptr < pte) &&
- ((*ptr == '>') ||
- isspace(*ptr)))
- {
- if (*ptr == '>')
- bq++;
- ptr ++;
- i++;
- }
-
- /*
- * Quoted text should be displayed in italics and in a
- * different colour. This code understands Citadel-style
- * " >" quotes and will convert to <BLOCKQUOTE> tags.
- */
- if (i > 0) StrBufCutLeft(Line, i);
-
-
- for (i = bn; i < bq; i++)
- StrBufAppendBufPlain(Target, HKEY("<blockquote>"), 0);
- for (i = bq; i < bn; i++)
- StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
- bn = bq;
-
- if (StrLength(Line) == 0)
- continue;
-
- /* Activate embedded URL's */
- UrlizeText(Line1, Line, Line2);
-
- StrEscAppend(Target, Line1, NULL, 0, 0);
-
- StrBufAppendBufPlain(Target, HKEY("\n"), 0);
- }
- while ((BufPtr != StrBufNOTNULL) &&
- (BufPtr != NULL));
-
- for (i = 0; i < bn; i++) {
- StrBufAppendBufPlain(Target, HKEY("</blockquote>"), 0);
- }
- StrBufAppendBufPlain(Target, HKEY("</div><br>\n"), 0);
- FreeStrBuf(&Line);
- FreeStrBuf(&Line1);
- FreeStrBuf(&Line2);
-}
-
-
-
-/*
- * Transmit message text (in memory) to the server.
- */
-void text_to_server(char *ptr) {
- char buf[256];
- int ch, a, pos, len;
-
- pos = 0;
- buf[0] = 0;
-
- while (ptr[pos] != 0) {
- ch = ptr[pos++];
- if (ch == 13) {
- // ignore CR characters
- }
- else if (ch == 10) {
- len = strlen(buf);
- while ( (isspace(buf[len - 1]))
- && (buf[0] != '\0')
- && (buf[1] != '\0') )
- buf[--len] = 0;
- serv_puts(buf);
- buf[0] = 0;
- if (ptr[pos] != 0) strcat(buf, " ");
- } else {
- a = strlen(buf);
- buf[a + 1] = 0;
- buf[a] = ch;
- if ((ch == 32) && (strlen(buf) > 200)) {
- buf[a] = 0;
- serv_puts(buf);
- buf[0] = 0;
- }
- if (strlen(buf) > 250) {
- serv_puts(buf);
- buf[0] = 0;
- }
- }
- }
- serv_puts(buf);
-}
-
-
-/*
- * Transmit message text (in memory) to the server, converting to Quoted-Printable encoding as we go.
- */
-void text_to_server_qp(const StrBuf *SendMeEncoded) {
- StrBuf *ServBuf;
-
- ServBuf = StrBufRFC2047encodeMessage(SendMeEncoded);
- serv_putbuf(ServBuf);
- FreeStrBuf(&ServBuf);
-}
-
-
-
-
-/*
- * translate server message output to text (used for editing room info files and such)
- */
-void server_to_text() {
- char buf[SIZ];
-
- int count = 0;
-
- while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
- if ((buf[0] == 32) && (count > 0)) {
- wc_printf("\n");
- }
- wc_printf("%s", buf);
- ++count;
- }
-}
-
-
-
-
-/*
- * Read text from server, appending to a string buffer until the
- * usual 000 terminator is found. Caller is responsible for freeing
- * the returned pointer.
- */
-int read_server_text(StrBuf *Buf, long *nLines) {
- StrBuf *ReadBuf;
- long nRead;
- long nTotal = 0;
- long nlines;
-
- nlines = 0;
- ReadBuf = NewStrBuf();
- while ((WC->serv_sock!=-1) &&
- (nRead = StrBuf_ServGetln(ReadBuf), (nRead >= 0) &&
- ((nRead != 3)||(strcmp(ChrPtr(ReadBuf), "000") != 0))))
- {
- StrBufAppendBuf(Buf, ReadBuf, 0);
- StrBufAppendBufPlain(Buf, HKEY("\n"), 0);
- nTotal += nRead;
- nlines ++;
- }
- FreeStrBuf(&ReadBuf);
- *nLines = nlines;
- return nTotal;
-}
-
-
-int GetServerStatusMsg(StrBuf *Line, long* FullState, int PutImportantMessage, int MajorOK) {
- int rc;
- if (FullState != NULL)
- *FullState = StrTol(Line);
- rc = ChrPtr(Line)[0] - 48;
- if ((!PutImportantMessage) ||
- (MajorOK == rc)||
- (StrLength(Line) <= 4))
- return rc;
-
- AppendImportantMessage(ChrPtr(Line) + 4, StrLength(Line) - 4);
- return rc;
-}
-
-
-void tmplput_serv_ip(StrBuf *Target, WCTemplputParams *TP) {
- StrBufAppendPrintf(Target, "%d", WC->ctdl_pid);
-}
-
-void tmplput_serv_admin(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return;
- StrBufAppendTemplate(Target, TP, WC->serv_info->serv_sysadm, 0);
-}
-
-void tmplput_serv_nodename(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return;
- StrBufAppendTemplate(Target, TP, WC->serv_info->serv_nodename, 0);
-}
-
-void tmplput_serv_humannode(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return;
- StrBufAppendTemplate(Target, TP, WC->serv_info->serv_humannode, 0);
-}
-
-void tmplput_serv_fqdn(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return;
- StrBufAppendTemplate(Target, TP, WC->serv_info->serv_fqdn, 0);
-}
-
-void tmplput_serv_software(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return;
- StrBufAppendTemplate(Target, TP, WC->serv_info->serv_software, 0);
-}
-
-void tmplput_serv_rev_level(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL) return;
- StrBufAppendPrintf(Target, "%d", WC->serv_info->serv_rev_level);
-}
-int conditional_serv_newuser_disabled(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return 0;
- return WC->serv_info->serv_newuser_disabled != 0;
-}
-
-int conditional_serv_supports_guest(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return 0;
- return WC->serv_info->serv_supports_guest != 0;
-}
-
-int conditional_serv_supports_openid(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return 0;
- return WC->serv_info->serv_supports_openid != 0;
-}
-
-int conditional_serv_fulltext_enabled(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return 0;
- return WC->serv_info->serv_fulltext_enabled != 0;
-}
-
-int conditional_serv_ldap_enabled(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return 0;
- return WC->serv_info->serv_supports_ldap != 0;
-}
-
-void tmplput_serv_bbs_city(StrBuf *Target, WCTemplputParams *TP) {
- if (WC->serv_info == NULL)
- return;
- StrBufAppendTemplate(Target, TP, WC->serv_info->serv_bbs_city, 0);
-}
-
-void tmplput_mesg(StrBuf *Target, WCTemplputParams *TP) {
- int n = 0;
- int Done = 0;
- StrBuf *Line;
- StrBuf *Buf;
-
- Buf = NewStrBuf();
- Line = NewStrBuf();
- serv_printf("MESG %s", TP->Tokens->Params[0]->Start);
-
- StrBuf_ServGetln(Line);
- if (GetServerStatus(Line, NULL) == 1) {
- while (!Done && (StrBuf_ServGetln(Line)>=0)) {
- if ( (StrLength(Line)==3) &&
- !strcmp(ChrPtr(Line), "000"))
- Done = 1;
- else
- {
- if (n > 0)
- StrBufAppendBufPlain(Buf, "\n", 1, 0);
- StrBufAppendBuf(Buf, Line, 0);
- }
- n++;
- }
-
- FlushStrBuf(Line);
- FmOut(Line, "center", Buf);
- StrBufAppendTemplate(Target, TP, Line, 1);
- }
- FreeStrBuf(&Buf);
- FreeStrBuf(&Line);
-}
-
-void tmplput_site_prefix(StrBuf *Target, WCTemplputParams *TP) {
- if ((WC != NULL) && (WC->Hdr->HostHeader != NULL)) {
- StrBufAppendTemplate(Target, TP, WC->Hdr->HostHeader, 0);
- }
-}
-
-void RegisterEmbeddableMimeType(const char *MimeType, long MTLen, int Priority) {
- StrBuf *MT;
- MT = NewStrBufPlain(MimeType, MTLen);
- Put(EmbeddableMimes, IKEY(Priority), MT, HFreeStrBuf);
-}
-
-void CreateMimeStr(void) {
- HashPos *it;
- void *vMime;
- long len = 0;
- const char *Key;
-
- it = GetNewHashPos(EmbeddableMimes, 0);
- while (GetNextHashPos(EmbeddableMimes, it, &len, &Key, &vMime) &&
- (vMime != NULL)) {
- if (StrLength(EmbeddableMimeStrs) > 0)
- StrBufAppendBufPlain(EmbeddableMimeStrs, HKEY("|"), 0);
- else
- StrBufAppendBufPlain(EmbeddableMimeStrs, HKEY("MSGP "), 0);
- StrBufAppendBuf(EmbeddableMimeStrs, (StrBuf*) vMime, 0);
- }
- DeleteHashPos(&it);
-}
-
-void
-ServerStartModule_SERV_FUNC
-(void)
-{
- EmbeddableMimes = NewHash(1, Flathash);
- EmbeddableMimeStrs = NewStrBuf();
-}
-
-
-void
-ServerShutdownModule_SERV_FUNC
-(void)
-{
- FreeStrBuf(&EmbeddableMimeStrs);
- DeleteHash(&EmbeddableMimes);
-}
-
-void
-InitModule_SERVFUNC
-(void)
-{
- RegisterConditional("COND:SERV:OPENID", 2, conditional_serv_supports_openid, CTX_NONE);
- RegisterConditional("COND:SERV:NEWU", 2, conditional_serv_newuser_disabled, CTX_NONE);
- RegisterConditional("COND:SERV:FULLTEXT_ENABLED", 2, conditional_serv_fulltext_enabled, CTX_NONE);
- RegisterConditional("COND:SERV:LDAP_ENABLED", 2, conditional_serv_ldap_enabled, CTX_NONE);
- RegisterConditional("COND:SERV:SUPPORTS_GUEST", 2, conditional_serv_supports_guest, CTX_NONE);
- RegisterNamespace("SERV:PID", 0, 0, tmplput_serv_ip, NULL, CTX_NONE);
- RegisterNamespace("SERV:NODENAME", 0, 1, tmplput_serv_nodename, NULL, CTX_NONE);
- RegisterNamespace("SERV:HUMANNODE", 0, 1, tmplput_serv_humannode, NULL, CTX_NONE);
- RegisterNamespace("SERV:FQDN", 0, 1, tmplput_serv_fqdn, NULL, CTX_NONE);
-
- RegisterNamespace("SERV:SOFTWARE", 0, 1, tmplput_serv_software, NULL, CTX_NONE);
- RegisterNamespace("SERV:REV_LEVEL", 0, 0, tmplput_serv_rev_level, NULL, CTX_NONE);
- RegisterNamespace("SERV:BBS_CITY", 0, 1, tmplput_serv_bbs_city, NULL, CTX_NONE);
- RegisterNamespace("SERV:MESG", 1, 2, tmplput_mesg, NULL, CTX_NONE);
- RegisterNamespace("SERV:ADMIN", 0, 1, tmplput_serv_admin, NULL, CTX_NONE);
-
- RegisterNamespace("SERV:SITE:PREFIX", 0, 1, tmplput_site_prefix, NULL, CTX_NONE);
-
-
-}
-
-
-
-void
-SessionDestroyModule_SERVFUNC
-(wcsession *sess)
-{
- DeleteServInfo(&sess->serv_info);
-}
projects / citadel.git / blobdiff