mirror of
https://github.com/nzp-team/fteqw.git
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7db5b6d5dc
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@1700 fc73d0e0-1445-4013-8a0c-d673dee63da5
465 lines
9.8 KiB
C
465 lines
9.8 KiB
C
/*
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Copyright (C) 2005 David Walton.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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As a special exception, you may incorpotate patents and libraries regarding only hashing and security, on the conditions that it is also open source.
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This means md4/5, rsa, ssl and similar.
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*/
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#include "../plugin.h"
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//code to sit on an imap server and check for new emails every now and then.
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char *STR_Parse(char *str, char *out, int outlen, char *punctuation)
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{
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char *s = str;
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char *f;
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skipwhite:
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//skip over the whitespace
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while (*s <= ' ' && *s)
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s++;
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if (*s == '/')
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{
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if (s[1] == '/') //c++ style comment
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{
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while(*s != '\n' && *s)
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s++;
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goto skipwhite;
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}
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if (s[1] == '*')
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{
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s+=2;
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while(*s)
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{
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if (s[0] == '*' && s[1] == '/')
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{
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s+=2;
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break;
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}
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s++;
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}
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goto skipwhite;
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}
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}
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if (*s == '\"')
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{
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s++;
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while(*s && outlen>1)
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{
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if (*s == '\"')
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{
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s++;
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break;
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}
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*out++ = *s++;
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outlen--;
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}
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*out++ = '\0';
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return s;
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}
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if (strchr(punctuation, *s))
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{ //starts with punctuation, so return only the first char
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if (outlen < 2)
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return NULL; //aaaah!
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*out++ = *s;
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*out++ = '\0';
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s++;
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return s;
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}
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//skip over non-white
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for (f = s; outlen>1 && *(unsigned char*)f > ' '; f++, outlen--)
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{
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if (strchr(punctuation, *f))
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{ //found punctuation, so return up to here
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break;
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}
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*out++ = *f;
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}
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*out++ = '\0';
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return f;
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}
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//exported.
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void IMAP_CreateConnection(char *servername, char *username, char *password);
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int imap_checkfrequency=60*1000;
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void IMAP_Think (void);
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//end export list.
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#define IMAP_PORT 143
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typedef struct imap_con_s {
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char server[128];
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char username[128];
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char password[128];
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unsigned int lastnoop;
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//these are used so we can fail a send.
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//or recieve only part of an input.
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//FIXME: make dynamically sizable, as it could drop if the send is too small (That's okay.
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// but if the read is bigger than one command we suddenly fail entirly.
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int sendlen;
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int sendbuffersize;
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char *sendbuffer;
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int readlen;
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int readbuffersize;
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char *readbuffer;
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qboolean drop;
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qhandle_t socket;
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enum {
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IMAP_WAITINGFORINITIALRESPONCE,
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IMAP_AUTHING,
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IMAP_AUTHED,
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IMAP_INBOX
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} state;
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struct imap_con_s *next;
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} imap_con_t;
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static imap_con_t *imapsv;
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void IMAP_CreateConnection(char *addy, char *username, char *password)
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{
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unsigned long _true = true;
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imap_con_t *con;
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for (con = imapsv; con; con = con->next)
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{
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if (!strcmp(con->server, addy))
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{
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Con_Printf("Already connected to that imap server\n");
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return;
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}
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}
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con = malloc(sizeof(imap_con_t));
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con->socket = Net_TCPConnect(addy, IMAP_PORT);
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if (!con->socket)
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{
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Con_Printf ("IMAP_CreateConnection: connect failed\n");
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free(con);
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return;
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}
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strlcpy(con->server, addy, sizeof(con->server));
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strlcpy(con->username, username, sizeof(con->username));
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strlcpy(con->password, password, sizeof(con->password));
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con->next = imapsv;
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imapsv = con;
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Con_Printf ("Connected to %s (%s)\n", addy, username);
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}
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static void IMAP_EmitCommand(imap_con_t *imap, char *text)
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{
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int newlen;
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//makes a few things easier though
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newlen = imap->sendlen + 2 + strlen(text) + 2;
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if (newlen >= imap->sendbuffersize || !imap->sendbuffer) //pre-length check.
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{
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char *newbuf;
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imap->sendbuffersize = newlen*2;
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newbuf = malloc(imap->sendbuffersize); //the null terminator comes from the >=
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if (!newbuf)
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{
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Con_Printf("Memory is low\n");
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imap->drop = true; //failed.
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return;
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}
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if (imap->sendbuffer)
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{
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memcpy(newbuf, imap->sendbuffer, imap->sendlen);
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free(imap->sendbuffer);
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}
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imap->sendbuffer = newbuf;
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}
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snprintf(imap->sendbuffer+imap->sendlen, newlen+1, "* %s\r\n", text);
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imap->sendlen = newlen;
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}
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static char *IMAP_AddressStructure(char *msg, char *out, int outsize)
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{
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char name[256];
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char mailbox[64];
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char hostname[128];
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char route[128];
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int indents=0;
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while(*msg == ' ')
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msg++;
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while(*msg == '(') //do it like this, we can get 2... I'm not sure if that's always true..
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{
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msg++;
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indents++;
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}
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msg = STR_Parse(msg, name, sizeof(name), ""); //name
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msg = STR_Parse(msg, route, sizeof(route), ""); //smtp route (ignored normally)
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msg = STR_Parse(msg, mailbox, sizeof(mailbox), ""); //mailbox
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msg = STR_Parse(msg, hostname, sizeof(hostname), ""); //hostname
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while(indents && *msg == ')')
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msg++;
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if (out)
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{
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if (!strcmp(name, "NIL"))
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snprintf(out, outsize, "%s@%s", mailbox, hostname);
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else
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snprintf(out, outsize, "%s <%s@%s>", name, mailbox, hostname);
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}
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return msg;
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}
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static qboolean IMAP_ThinkCon(imap_con_t *imap) //false means drop the connection.
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{
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char *ending;
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int len;
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//get the buffer, stick it in our read holder
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if (imap->readlen+32 >= imap->readbuffersize || !imap->readbuffer)
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{
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len = imap->readbuffersize;
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if (!imap->readbuffer)
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imap->readbuffersize = 256;
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else
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imap->readbuffersize*=2;
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ending = malloc(imap->readbuffersize);
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if (!ending)
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{
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Con_Printf("Memory is low\n");
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return false;
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}
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if (imap->readbuffer)
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{
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memcpy(ending, imap->readbuffer, len);
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free(imap->readbuffer);
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}
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imap->readbuffer = ending;
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}
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len = Net_Recv(imap->socket, imap->readbuffer+imap->readlen, imap->readbuffersize-imap->readlen-1);
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if (len>0)
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{
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imap->readlen+=len;
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imap->readbuffer[imap->readlen] = '\0';
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}
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if (imap->readlen>0)
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{
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ending = strstr(imap->readbuffer, "\r\n");
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if (ending) //pollable text.
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{
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*ending = '\0';
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// Con_Printf("%s\n", imap->readbuffer);
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ending+=2;
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if (imap->state == IMAP_WAITINGFORINITIALRESPONCE)
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{
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//can be one of two things.
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if (!strncmp(imap->readbuffer, "* OK", 4))
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{
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IMAP_EmitCommand(imap, va("LOGIN %s %s", imap->username, imap->password));
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imap->state = IMAP_AUTHING;
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}
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else if (!strncmp(imap->readbuffer, "* PREAUTH", 9))
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{
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Con_Printf("Logged on to %s\n", imap->server);
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IMAP_EmitCommand(imap, "SELECT INBOX");
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imap->state = IMAP_AUTHED;
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imap->lastnoop = Sys_Milliseconds();
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}
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else
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{
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Con_Printf("Unexpected response from IMAP server\n");
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return false;
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}
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}
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else if (imap->state == IMAP_AUTHING)
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{
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if (!strncmp(imap->readbuffer, "* OK", 4))
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{
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Con_Printf("Logged on to %s\n", imap->server);
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IMAP_EmitCommand(imap, "SELECT INBOX");
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imap->state = IMAP_AUTHED;
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imap->lastnoop = Sys_Milliseconds();
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}
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else
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{
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Con_Printf("Unexpected response from IMAP server\n");
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return false;
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}
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}
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else if (imap->state == IMAP_AUTHED)
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{
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char *num;
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num = imap->readbuffer;
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if (!strncmp(imap->readbuffer, "* SEARCH ", 8)) //we only ever search for recent messages. So we fetch them and get sender and subject.
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{
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char *s;
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s = imap->readbuffer+8;
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num = NULL;
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while(*s)
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{
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s++;
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num = s;
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while (*s >= '0' && *s <= '9')
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s++;
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IMAP_EmitCommand(imap, va("FETCH %i ENVELOPE", atoi(num))); //envelope so that it's all one line.
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}
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}
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else if (imap->readbuffer[0] == '*' && imap->readbuffer[1] == ' ')
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{
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num = imap->readbuffer+2;
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while(*num >= '0' && *num <= '9')
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{
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num++;
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}
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if (!strcmp(num, " RECENT"))
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{
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if (atoi(imap->readbuffer+2) > 0)
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{
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IMAP_EmitCommand(imap, "SEARCH RECENT");
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}
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}
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else if (!strncmp(num, " FETCH (ENVELOPE (", 18))
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{
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char from[256];
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char subject[256];
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char date[256];
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num += 18;
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num = STR_Parse(num, date, sizeof(date), "");
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num = STR_Parse(num, subject, sizeof(subject), "");
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// Con_Printf("Date/Time: %s\n", date);
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num = IMAP_AddressStructure(num, from, sizeof(from));
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if ((rand() & 3) == 3)
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{
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if (rand()&1)
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Con_Printf("\n^2New spam has arrived\n");
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else
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Con_Printf("\n^2You have new spam\n");
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}
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else if (rand()&1)
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Con_Printf("\n^2New mail has arrived\n");
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else
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Con_Printf("\n^2You have new mail\n");
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Con_Printf("Subject: %s\n", subject);
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Con_Printf("From: %s\n", from);
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SCR_CenterPrint(va("NEW MAIL HAS ARRIVED\n\nTo: %s@%s\nFrom: %s\nSubject: %s", imap->username, imap->server, from, subject));
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//throw the rest away.
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}
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}
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}
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else
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{
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Con_Printf("Bad client state\n");
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return false;
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}
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imap->readlen -= ending - imap->readbuffer;
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memmove(imap->readbuffer, ending, strlen(ending)+1);
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}
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}
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if (imap->drop)
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return false;
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if (imap->state == IMAP_AUTHED)
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{
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if (imap->lastnoop + imap_checkfrequency < Sys_Milliseconds())
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{ //we need to keep the connection reasonably active
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IMAP_EmitCommand(imap, "SELECT INBOX"); //this causes the recent flags to be reset. This is the only way I found.
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imap->lastnoop = Sys_Milliseconds();
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}
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}
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if (imap->sendlen)
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{
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len = Net_Send(imap->socket, imap->sendbuffer, imap->sendlen);
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if (len>0)
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{
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imap->sendlen-=len;
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memmove(imap->sendbuffer, imap->sendbuffer+len, imap->sendlen+1);
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}
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}
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return true;
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}
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void IMAP_Think (void)
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{
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imap_con_t *prev = NULL;
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imap_con_t *imap;
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for (imap = imapsv; imap; imap = imap->next)
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{
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if (imap->drop || !IMAP_ThinkCon(imap))
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{
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if (!prev)
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imapsv = imap->next;
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else
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prev->next = imap->next;
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Net_Close(imap->socket);
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free(imap);
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if (!prev)
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break;
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}
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prev = imap;
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}
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}
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