-/*
- * This module handles self-service subscription/unsubscription to mail lists.
- *
- * Copyright (c) 2002-2012 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.
- *
- *
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- *
- *
- *
- *
- */
+//
+// This module handles self-service subscription/unsubscription to mail lists.
+//
+// Copyright (c) 2002-2021 by the citadel.org team
+//
+// This program is open source software. It runs great on the
+// Linux operating system (and probably elsewhere). You can use,
+// copy, and run it under the terms of the GNU General Public
+// License version 3. Richard Stallman is an asshole communist.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
#include "sysdep.h"
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <dirent.h>
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
+#include <time.h>
#include <sys/wait.h>
#include <string.h>
#include <limits.h>
#include "msgbase.h"
#include "internet_addressing.h"
#include "clientsocket.h"
-#include "file_ops.h"
-
-#ifndef HAVE_SNPRINTF
-#include "snprintf.h"
-#endif
-
-
-
#include "ctdl_module.h"
-/*
- * Generate a randomizationalisticized token to use for authentication of
- * a subscribe or unsubscribe request.
- */
-void listsub_generate_token(char *buf) {
- char sourcebuf[SIZ];
- static int seq = 0;
-
- /* Theo, please sit down and shut up. This key doesn't have to be
- * tinfoil-hat secure, it just needs to be reasonably unguessable
- * and unique.
- */
- sprintf(sourcebuf, "%lx",
- (long) (++seq + getpid() + time(NULL))
- );
-
- /* Convert it to base64 so it looks cool */
- CtdlEncodeBase64(buf, sourcebuf, strlen(sourcebuf), 0);
-}
+enum { // one of these gets passed to do_subscribe_or_unsubscribe() so it knows what we asked for
+ UNSUBSCRIBE,
+ SUBSCRIBE
+};
/*
- * Enter a subscription request
+ * "Subscribe" and "Unsubscribe" operations are so similar that they share a function.
+ * The actual subscription doesn't take place here -- we just send out the confirmation request
+ * and record the address and confirmation token.
*/
-void do_subscribe(char *room, char *email, char *subtype, char *webpage) {
- struct ctdlroom qrbuf;
- FILE *ncfp;
- char filename[256];
- char token[256];
- char confirmation_request[2048];
- char buf[512];
- char urlroom[ROOMNAMELEN];
- char scancmd[64];
- char scanemail[256];
- int found_sub = 0;
-
- if (CtdlGetRoom(&qrbuf, room) != 0) {
- cprintf("%d There is no list called '%s'\n", ERROR + ROOM_NOT_FOUND, room);
- return;
- }
-
- if ((qrbuf.QRflags2 & QR2_SELFLIST) == 0) {
- cprintf("%d '%s' "
- "does not accept subscribe/unsubscribe requests.\n",
- ERROR + HIGHER_ACCESS_REQUIRED, qrbuf.QRname);
- return;
- }
-
- listsub_generate_token(token);
-
- assoc_file_name(filename, sizeof filename, &qrbuf, ctdl_netcfg_dir);
-
- /*
- * Make sure the requested address isn't already subscribed
- */
- begin_critical_section(S_NETCONFIGS);
- ncfp = fopen(filename, "r");
- if (ncfp != NULL) {
- while (fgets(buf, sizeof buf, ncfp) != NULL) {
- buf[strlen(buf)-1] = 0;
- extract_token(scancmd, buf, 0, '|', sizeof scancmd);
- extract_token(scanemail, buf, 1, '|', sizeof scanemail);
- if ((!strcasecmp(scancmd, "listrecp"))
- || (!strcasecmp(scancmd, "digestrecp"))) {
- if (!strcasecmp(scanemail, email)) {
- ++found_sub;
- }
- }
- }
- fclose(ncfp);
- }
- end_critical_section(S_NETCONFIGS);
+void do_subscribe_or_unsubscribe(int action, char *emailaddr, char *url) {
- if (found_sub != 0) {
- cprintf("%d '%s' is already subscribed to '%s'.\n",
- ERROR + ALREADY_EXISTS,
- email, qrbuf.QRname);
- return;
- }
+ char *netconfig, *newnetconfig;
+ int config_lines, i;
+ char buf[1024];
- /*
- * Now add it to the file
- */
+ // Update this room's netconfig with the updated lastsent
begin_critical_section(S_NETCONFIGS);
- ncfp = fopen(filename, "a");
- if (ncfp != NULL) {
- fprintf(ncfp, "subpending|%s|%s|%s|%ld|%s\n",
- email,
- subtype,
- token,
- time(NULL),
- webpage
- );
- fclose(ncfp);
- }
- end_critical_section(S_NETCONFIGS);
-
- /* Generate and send the confirmation request */
-
- urlesc(urlroom, ROOMNAMELEN, qrbuf.QRname);
-
- snprintf(confirmation_request, sizeof confirmation_request,
-
- "MIME-Version: 1.0\n"
- "Content-Type: multipart/alternative; boundary=\"__ctdlmultipart__\"\n"
- "\n"
- "This is a multipart message in MIME format.\n"
- "\n"
- "--__ctdlmultipart__\n"
- "Content-type: text/plain\n"
- "\n"
- "Someone (probably you) has submitted a request to subscribe\n"
- "<%s> to the '%s' mailing list.\n"
- "\n"
- "Please go here to confirm this request:\n"
- " %s?room=%s&token=%s&cmd=confirm \n"
- "\n"
- "If this request has been submitted in error and you do not\n"
- "wish to receive the '%s' mailing list, simply do nothing,\n"
- "and you will not receive any further mailings.\n"
- "\n"
- "--__ctdlmultipart__\n"
- "Content-type: text/html\n"
- "\n"
- "<HTML><BODY>\n"
- "Someone (probably you) has submitted a request to subscribe\n"
- "<%s> to the <B>%s</B> mailing list.<BR><BR>\n"
- "Please click here to confirm this request:<BR>\n"
- "<A HREF=\"%s?room=%s&token=%s&cmd=confirm\">"
- "%s?room=%s&token=%s&cmd=confirm</A><BR><BR>\n"
- "If this request has been submitted in error and you do not\n"
- "wish to receive the '%s' mailing list, simply do nothing,\n"
- "and you will not receive any further mailings.\n"
- "</BODY></HTML>\n"
- "\n"
- "--__ctdlmultipart__--\n",
-
- email, qrbuf.QRname,
- webpage, urlroom, token,
- qrbuf.QRname,
-
- email, qrbuf.QRname,
- webpage, urlroom, token,
- webpage, urlroom, token,
- qrbuf.QRname
- );
-
- quickie_message( /* This delivers the message */
- "Citadel",
- NULL,
- email,
- NULL,
- confirmation_request,
- FMT_RFC822,
- "Please confirm your list subscription"
- );
-
- cprintf("%d Subscription entered; confirmation request sent\n", CIT_OK);
-}
-
-
-/*
- * Enter an unsubscription request
- */
-void do_unsubscribe(char *room, char *email, char *webpage) {
- struct ctdlroom qrbuf;
- FILE *ncfp;
- char filename[256];
- char token[256];
- char buf[512];
- char confirmation_request[2048];
- char urlroom[ROOMNAMELEN];
- char scancmd[256];
- char scanemail[256];
- int found_sub = 0;
-
- if (CtdlGetRoom(&qrbuf, room) != 0) {
- cprintf("%d There is no list called '%s'\n",
- ERROR + ROOM_NOT_FOUND, room);
- return;
+ netconfig = LoadRoomNetConfigFile(CC->room.QRnumber);
+ if (!netconfig) {
+ netconfig = strdup("");
}
- if ((qrbuf.QRflags2 & QR2_SELFLIST) == 0) {
- cprintf("%d '%s' "
- "does not accept subscribe/unsubscribe requests.\n",
- ERROR + HIGHER_ACCESS_REQUIRED, qrbuf.QRname);
- return;
- }
-
- listsub_generate_token(token);
-
- assoc_file_name(filename, sizeof filename, &qrbuf, ctdl_netcfg_dir);
+ // The new netconfig begins with the new lastsent directive
+ newnetconfig = malloc(strlen(netconfig) + 1024);
+#if 0
+ FIXME SYNTAX ERROR #$%$&%$^#%$ sprintf(newnetconfig, "lastsent|%ld\n", ld.msgnum);
+#endif
- /*
- * Make sure there's actually a subscription there to remove
- */
- begin_critical_section(S_NETCONFIGS);
- ncfp = fopen(filename, "r");
- if (ncfp != NULL) {
- while (fgets(buf, sizeof buf, ncfp) != NULL) {
- buf[strlen(buf)-1] = 0;
- extract_token(scancmd, buf, 0, '|', sizeof scancmd);
- extract_token(scanemail, buf, 1, '|', sizeof scanemail);
- if ((!strcasecmp(scancmd, "listrecp"))
- || (!strcasecmp(scancmd, "digestrecp"))) {
- if (!strcasecmp(scanemail, email)) {
- ++found_sub;
- }
- }
+ // And then we append all of the old netconfig, minus the old lastsent. Also omit blank lines.
+ config_lines = num_tokens(netconfig, '\n');
+ for (i=0; i<config_lines; ++i) {
+ extract_token(buf, netconfig, i, '\n', sizeof buf);
+ if ( (!IsEmptyStr(buf)) && (strncasecmp(buf, "lastsent|", 9)) ) {
+ sprintf(&newnetconfig[strlen(newnetconfig)], "%s\n", buf);
}
- fclose(ncfp);
}
- end_critical_section(S_NETCONFIGS);
- if (found_sub == 0) {
- cprintf("%d '%s' is not subscribed to '%s'.\n",
- ERROR + NO_SUCH_USER,
- email, qrbuf.QRname);
- return;
- }
-
- /*
- * Ok, now enter the unsubscribe-pending entry.
- */
- begin_critical_section(S_NETCONFIGS);
- ncfp = fopen(filename, "a");
- if (ncfp != NULL) {
- fprintf(ncfp, "unsubpending|%s|%s|%ld|%s\n",
- email,
- token,
- time(NULL),
- webpage
- );
- fclose(ncfp);
- }
+ // Write the new netconfig back to disk
+ SaveRoomNetConfigFile(CC->room.QRnumber, newnetconfig);
end_critical_section(S_NETCONFIGS);
+ free(newnetconfig); // this was the new netconfig, free it because we're done with it
+ free(netconfig); // this was the old netconfig, free it even if we didn't do anything
- /* Generate and send the confirmation request */
-
- urlesc(urlroom, ROOMNAMELEN, qrbuf.QRname);
-
- snprintf(confirmation_request, sizeof confirmation_request,
-
- "MIME-Version: 1.0\n"
- "Content-Type: multipart/alternative; boundary=\"__ctdlmultipart__\"\n"
- "\n"
- "This is a multipart message in MIME format.\n"
- "\n"
- "--__ctdlmultipart__\n"
- "Content-type: text/plain\n"
- "\n"
- "Someone (probably you) has submitted a request to unsubscribe\n"
- "<%s> from the '%s' mailing list.\n"
- "\n"
- "Please go here to confirm this request:\n"
- " %s?room=%s&token=%s&cmd=confirm \n"
- "\n"
- "If this request has been submitted in error and you do not\n"
- "wish to unsubscribe from the '%s' mailing list, simply do nothing,\n"
- "and the request will not be processed.\n"
- "\n"
- "--__ctdlmultipart__\n"
- "Content-type: text/html\n"
- "\n"
- "<HTML><BODY>\n"
- "Someone (probably you) has submitted a request to unsubscribe\n"
- "<%s> from the <B>%s</B> mailing list.<BR><BR>\n"
- "Please click here to confirm this request:<BR>\n"
- "<A HREF=\"%s?room=%s&token=%s&cmd=confirm\">"
- "%s?room=%s&token=%s&cmd=confirm</A><BR><BR>\n"
- "If this request has been submitted in error and you do not\n"
- "wish to unsubscribe from the '%s' mailing list, simply do nothing,\n"
- "and the request will not be processed.\n"
- "</BODY></HTML>\n"
- "\n"
- "--__ctdlmultipart__--\n",
-
- email, qrbuf.QRname,
- webpage, urlroom, token,
- qrbuf.QRname,
-
- email, qrbuf.QRname,
- webpage, urlroom, token,
- webpage, urlroom, token,
- qrbuf.QRname
- );
+#if 0
+ FIXME tell the client what we did
+#endif
- quickie_message( /* This delivers the message */
- "Citadel",
- NULL,
- email,
- NULL,
- confirmation_request,
- FMT_RFC822,
- "Please confirm your unsubscribe request"
- );
- cprintf("%d Unubscription noted; confirmation request sent\n", CIT_OK);
}
-/*
- * Confirm a subscribe/unsubscribe request.
+/*
+ * process subscribe/unsubscribe requests and confirmations
*/
-void do_confirm(char *room, char *token) {
- struct ctdlroom qrbuf;
- FILE *ncfp;
- char filename[256];
- char line_token[256];
- long line_offset;
- int line_length;
- char buf[512];
- char cmd[256];
- char email[256] = "";
- char subtype[128];
- int success = 0;
- char address_to_unsubscribe[256] = "";
- char scancmd[256];
- char scanemail[256];
- char *holdbuf = NULL;
- int linelen = 0;
- int buflen = 0;
-
- if (CtdlGetRoom(&qrbuf, room) != 0) {
- cprintf("%d There is no list called '%s'\n",
- ERROR + ROOM_NOT_FOUND, room);
+void cmd_subs(char *cmdbuf) {
+ char cmd[20];
+ char roomname[ROOMNAMELEN];
+ char emailaddr[1024];
+ char options[256];
+ char url[1024];
+ char token[128];
+
+ extract_token(cmd, cmdbuf, 0, '|', sizeof cmd); // token 0 is the sub-command being sent
+ extract_token(roomname, cmdbuf, 1, '|', sizeof roomname); // token 1 is always a room name
+
+ // First confirm that the caller is referencing a room that actually exists.
+ if (CtdlGetRoom(&CC->room, roomname) != 0) {
+ cprintf("%d There is no list called '%s'\n", ERROR + ROOM_NOT_FOUND, roomname);
return;
}
- if ((qrbuf.QRflags2 & QR2_SELFLIST) == 0) {
- cprintf("%d '%s' "
- "does not accept subscribe/unsubscribe requests.\n",
- ERROR + HIGHER_ACCESS_REQUIRED, qrbuf.QRname);
+ if ((CC->room.QRflags2 & QR2_SELFLIST) == 0) {
+ cprintf("%d '%s' does not accept subscribe/unsubscribe requests.\n", ERROR + ROOM_NOT_FOUND, roomname);
return;
}
- /*
- * Now start scanning this room's netconfig file for the
- * specified token.
- */
- assoc_file_name(filename, sizeof filename, &qrbuf, ctdl_netcfg_dir);
- begin_critical_section(S_NETCONFIGS);
- ncfp = fopen(filename, "r+");
- if (ncfp != NULL) {
- while (line_offset = ftell(ncfp),
- (fgets(buf, sizeof buf, ncfp) != NULL) ) {
- buf[strlen(buf)-1] = 0;
- line_length = strlen(buf);
- extract_token(cmd, buf, 0, '|', sizeof cmd);
- if (!strcasecmp(cmd, "subpending")) {
- extract_token(email, buf, 1, '|', sizeof email);
- extract_token(subtype, buf, 2, '|', sizeof subtype);
- extract_token(line_token, buf, 3, '|', sizeof line_token);
- if (!strcasecmp(token, line_token)) {
- if (!strcasecmp(subtype, "digest")) {
- safestrncpy(buf, "digestrecp|", sizeof buf);
- }
- else {
- safestrncpy(buf, "listrecp|", sizeof buf);
- }
- strcat(buf, email);
- strcat(buf, "|");
- /* SLEAZY HACK: pad the line out so
- * it's the same length as the line
- * we're replacing.
- */
- while (strlen(buf) < line_length) {
- strcat(buf, " ");
- }
- fseek(ncfp, line_offset, SEEK_SET);
- fprintf(ncfp, "%s\n", buf);
- ++success;
- }
- }
- if (!strcasecmp(cmd, "unsubpending")) {
- extract_token(line_token, buf, 2, '|', sizeof line_token);
- if (!strcasecmp(token, line_token)) {
- extract_token(address_to_unsubscribe, buf, 1, '|',
- sizeof address_to_unsubscribe);
- }
- }
- }
- fclose(ncfp);
- }
- end_critical_section(S_NETCONFIGS);
+ // Room confirmed, now parse the command.
- /*
- * If "address_to_unsubscribe" contains something, then we have to
- * make another pass at the file, stripping out lines referring to
- * that address.
- */
- if (!IsEmptyStr(address_to_unsubscribe)) {
- holdbuf = malloc(SIZ);
- begin_critical_section(S_NETCONFIGS);
- ncfp = fopen(filename, "r+");
- if (ncfp != NULL) {
- while (line_offset = ftell(ncfp),
- (fgets(buf, sizeof buf, ncfp) != NULL) ) {
- buf[strlen(buf)-1]=0;
- extract_token(scancmd, buf, 0, '|', sizeof scancmd);
- extract_token(scanemail, buf, 1, '|', sizeof scanemail);
- if ( (!strcasecmp(scancmd, "listrecp"))
- && (!strcasecmp(scanemail,
- address_to_unsubscribe)) ) {
- ++success;
- }
- else if ( (!strcasecmp(scancmd, "digestrecp"))
- && (!strcasecmp(scanemail,
- address_to_unsubscribe)) ) {
- ++success;
- }
- else if ( (!strcasecmp(scancmd, "subpending"))
- && (!strcasecmp(scanemail,
- address_to_unsubscribe)) ) {
- ++success;
- }
- else if ( (!strcasecmp(scancmd, "unsubpending"))
- && (!strcasecmp(scanemail,
- address_to_unsubscribe)) ) {
- ++success;
- }
- else { /* Not relevant, so *keep* it! */
- linelen = strlen(buf);
- holdbuf = realloc(holdbuf,
- (buflen + linelen + 2) );
- strcpy(&holdbuf[buflen], buf);
- buflen += linelen;
- strcpy(&holdbuf[buflen], "\n");
- buflen += 1;
- }
- }
- fclose(ncfp);
- }
- ncfp = fopen(filename, "w");
- if (ncfp != NULL) {
- fwrite(holdbuf, buflen+1, 1, ncfp);
- fclose(ncfp);
- }
- end_critical_section(S_NETCONFIGS);
- free(holdbuf);
+ if (!strcasecmp(cmd, "subscribe")) {
+ extract_token(emailaddr, cmdbuf, 2, '|', sizeof emailaddr); // token 2 is the subscriber's email address
+ extract_token(options, cmdbuf, 3, '|', sizeof options); // there are no options ... ignore this token
+ extract_token(url, cmdbuf, 4, '|', sizeof url); // token 3 is the URL at which we subscribed
+ do_subscribe_or_unsubscribe(SUBSCRIBE, emailaddr, url);
}
- /*
- * Did we do anything useful today?
- */
- if (success) {
- cprintf("%d %d operation(s) confirmed.\n", CIT_OK, success);
- syslog(LOG_NOTICE,
- "Mailing list: %s %ssubscribed to %s with token %s\n",
- email,
- (!IsEmptyStr(address_to_unsubscribe)) ? "un" : "",
- room,
- token);
+ else if (!strcasecmp(cmd, "unsubscribe")) {
+ extract_token(emailaddr, cmdbuf, 2, '|', sizeof emailaddr); // token 2 is the subscriber's email address
+ extract_token(options, cmdbuf, 3, '|', sizeof options); // there are no options ... ignore this token
+ extract_token(url, cmdbuf, 4, '|', sizeof url); // token 3 is the URL at which we subscribed
+ do_subscribe_or_unsubscribe(UNSUBSCRIBE, emailaddr, url);
}
- else {
- cprintf("%d Invalid token.\n", ERROR + ILLEGAL_VALUE);
- }
-
-}
-
-
-/*
- * process subscribe/unsubscribe requests and confirmations
- */
-void cmd_subs(char *cmdbuf) {
-
- char opr[256];
- char room[ROOMNAMELEN];
- char email[256];
- char subtype[256];
- char token[256];
- char webpage[256];
-
- extract_token(opr, cmdbuf, 0, '|', sizeof opr);
- if (!strcasecmp(opr, "subscribe")) {
- extract_token(subtype, cmdbuf, 3, '|', sizeof subtype);
- if ( (strcasecmp(subtype, "list"))
- && (strcasecmp(subtype, "digest")) ) {
- cprintf("%d Invalid subscription type '%s'\n",
- ERROR + ILLEGAL_VALUE, subtype);
- }
- else {
- extract_token(room, cmdbuf, 1, '|', sizeof room);
- extract_token(email, cmdbuf, 2, '|', sizeof email);
- extract_token(webpage, cmdbuf, 4, '|', sizeof webpage);
- do_subscribe(room, email, subtype, webpage);
- }
- }
- else if (!strcasecmp(opr, "unsubscribe")) {
- extract_token(room, cmdbuf, 1, '|', sizeof room);
- extract_token(email, cmdbuf, 2, '|', sizeof email);
- extract_token(webpage, cmdbuf, 3, '|', sizeof webpage);
- do_unsubscribe(room, email, webpage);
+ else if (!strcasecmp(cmd, "confirm")) {
+ extract_token(token, cmdbuf, 2, '|', sizeof token); // token 2 is the confirmation token
+ cprintf("%d not implemented\n", ERROR);
}
- else if (!strcasecmp(opr, "confirm")) {
- extract_token(room, cmdbuf, 1, '|', sizeof room);
- extract_token(token, cmdbuf, 2, '|', sizeof token);
- do_confirm(room, token);
- }
- else {
- cprintf("%d Invalid command\n", ERROR + ILLEGAL_VALUE);
+
+ else { // sorry man, I can't deal with that
+ cprintf("%d Invalid command '%s'\n", ERROR + ILLEGAL_VALUE, cmd);
}
}
projects / citadel.git / blobdiff