From e2035c018f293db615fb4c46984ea033b9e7f50b Mon Sep 17 00:00:00 2001 From: "Eric S. Raymond" Date: Wed, 11 Sep 1996 19:01:53 +0000 Subject: Most of the way to SMTP forwarding. svn path=/trunk/; revision=79 --- Makefile.in | 7 +- NEWS | 9 +- driver.c | 272 +++++++++++++++++++++++++-------------------- fetchmail.c | 4 +- fetchmail.h | 7 +- fetchmail.man | 15 +++ options.c | 15 ++- pop2.c | 2 + rcfile_l.l | 1 + rcfile_y.y | 3 +- smtp.c | 351 +++------------------------------------------------------- socket.c | 5 - 12 files changed, 214 insertions(+), 477 deletions(-) diff --git a/Makefile.in b/Makefile.in index ed9efb98..4b40f40f 100644 --- a/Makefile.in +++ b/Makefile.in @@ -63,14 +63,14 @@ ETAGS = etags -tw CTAGS = ctags -tw popobjs = socket.o getpass.o pop2.o pop3.o imap.o popclient.o options.o \ - poprc_l.o poprc_y.o poprc.o daemon.o driver.o xmalloc.o + poprc_l.o poprc_y.o poprc.o daemon.o driver.o smtp.o xmalloc.o objs = $(popobjs) $(EXTRAOBJ) $(extras) srcs = $(srcdir)/socket.c $(srcdir)/getpass.c $(srcdir)/pop2.c \ $(srcdir)/pop3.c $(srcdir)/imap.c $(srcdir)/popclient.c \ $(srcdir)/options.c $(srcdir)/poprc.c $(srcdir)/daemon.c \ - $(srcdir)/driver.c $(srcdir)/xmalloc.c $(EXTRASRC) + $(srcdir)/driver.c $(srcdir)/smtp.c $(srcdir)/xmalloc.c $(EXTRASRC) .SUFFIXES: .SUFFIXES: .o .c .h .y .l .ps .dvi .info .texi @@ -189,7 +189,8 @@ $(srcdir)/poprc_l.c: $(srcdir)/poprc_l.l $(srcdir)/poprc_y.c: $(srcdir)/poprc_y.y parser = $(srcdir)/poprc_l.l $(srcdir)/poprc_y.y -headers = $(srcdir)/popclient.h $(srcdir)/socket.h $(srcdir)/poproto.h +headers = $(srcdir)/popclient.h $(srcdir)/socket.h $(srcdir)/poproto.h \ + $(srcdir)/smtp.h extra = $(srcdir)/alloca.c $(srcdir)/bzero.[ch] $(srcdir)/errorcodes \ $(srcdir)/getopt.[ch] $(srcdir)/getopt1.c $(srcdir)/md5*.[ch] \ $(srcdir)/strcasecmp.c $(srcdir)/strdup.c diff --git a/NEWS b/NEWS index a10697a7..6d432204 100644 --- a/NEWS +++ b/NEWS @@ -9,10 +9,8 @@ Option to enable EMACS-like user folder versioning on each run. S/key for secure challenge-response. Recode POP2 to use the same driver/method strategy as POP3/IMAP, so -all three protocols will be able to forward messages through the -generic driver. (This requires that we find a POP2 server to test with.) - -Support SMTP forwarding. +all three protocols will be able to forward messages through the generic +driver to SMTP. (This requires that we find a POP2 server to test with.) 3.1: @@ -25,6 +23,9 @@ Support SMTP forwarding. * Code now autoprobes for a POP3, IMAP, or POP2 server if no protocol is specified. +* SMTP forwarding support. Thanks to Harry Hochheiser + for this simple but very clever idea. + 3.05: * Experimental support for RFC1725-compliant POP servers with the UIDL diff --git a/driver.c b/driver.c index b424151d..02994f00 100644 --- a/driver.c +++ b/driver.c @@ -25,16 +25,23 @@ #include #include #include +#include #include "socket.h" #include "popclient.h" +#include "smtp.h" static struct method *protocol; +#define SMTP_PORT 25 /* standard SMTP service port */ + char tag[TAGLEN]; static int tagnum; #define GENSYM (sprintf(tag, "a%04d", ++tagnum), tag) +static int gen_readmsg (int socket, int mboxfd, long len, int delimited, + char *host, int topipe, int rewrite); + /********************************************************************* function: do_protocol description: retrieve messages from the specified mail server @@ -57,26 +64,37 @@ struct method *proto; { int ok, len; int mboxfd; - char buf [POPBUFSIZE]; + char buf [POPBUFSIZE], host[HOSTLEN]; int socket; int first,number,count; tagnum = 0; protocol = proto; - /* open stdout or the mailbox, locking it if it is a folder */ - if (queryctl->output == TO_FOLDER || queryctl->output == TO_STDOUT) + /* open the output sink, locking it if it is a folder */ + if (queryctl->output == TO_FOLDER || queryctl->output == TO_STDOUT) { if ((mboxfd = openuserfolder(queryctl)) < 0) return(PS_IOERR); + } else if (queryctl->output == TO_SMTP) { + if ((mboxfd = Socket(queryctl->smtphost,SMTP_PORT)) < 0) + return(PS_SOCKET); - /* open the socket */ + /* make it look like mail is coming from the server */ + if (SMTP_helo(mboxfd,queryctl->servername) != SM_OK) { + close(mboxfd); + mboxfd = 0; + return(PS_SMTP); + } + } + + /* open a socket to the mail server */ if ((socket = Socket(queryctl->servername,protocol->port)) < 0) { perror("do_protocol: socket"); ok = PS_SOCKET; goto closeUp; } - /* accept greeting message from server */ + /* accept greeting message from mail server */ ok = (protocol->parse_response)(buf, socket); if (ok != 0) { if (ok != PS_SOCKET) @@ -128,13 +146,13 @@ struct method *proto; (*protocol->fetch)(socket, number, linelimit, &len); if (outlevel == O_VERBOSE) if (protocol->delimited) - fprintf(stderr,"fetching message %d (delimited)\n",number); - else - fprintf(stderr,"fetching message %d (%d bytes)\n",number,len); + fprintf(stderr,"fetching message %d (delimited)\n",number); + else + fprintf(stderr,"fetching message %d (%d bytes)\n",number,len); ok = gen_readmsg(socket,mboxfd,len,protocol->delimited, - queryctl->servername, - queryctl->output == TO_MDA, - queryctl->rewrite); + queryctl->servername, + queryctl->output, + queryctl->rewrite); if (protocol->trail) (*protocol->trail)(socket, queryctl, number); if (ok != 0) @@ -189,9 +207,13 @@ cleanUp: closeUp: if (queryctl->output == TO_FOLDER) + { if (closeuserfolder(mboxfd) < 0 && ok == 0) ok = PS_IOERR; - + } + else if (queryctl->output == TO_SMTP && mboxfd > 0) + close(mboxfd); + if (ok == PS_IOERR || ok == PS_SOCKET) perror("do_protocol: cleanUp"); @@ -289,134 +311,144 @@ va_dcl { be written. len length of text pophost name of the POP host - topipe true if we're writing to the system mailbox pipe. + output output mode return value: zero if success else PS_* return code. calls: SockGets. globals: reads outlevel. *********************************************************************/ -int gen_readmsg (socket,mboxfd,len,delimited,pophost,topipe,rewrite) +int gen_readmsg (socket,mboxfd,len,delimited,pophost,output,rewrite) int socket; int mboxfd; long len; int delimited; char *pophost; -int topipe; +int output; int rewrite; { - char buf [MSGBUFSIZE]; - char *bufp; - char savec; - char fromBuf[MSGBUFSIZE]; - int n; - int needFrom; - int inheaders; - int lines,sizeticker; - time_t now; - /* This keeps the retrieved message count for display purposes */ - static int msgnum = 0; - - /* set up for status message if outlevel allows it */ - if (outlevel > O_SILENT && outlevel < O_VERBOSE) { - fprintf(stderr,"reading message %d",++msgnum); - /* won't do the '...' if retrieved messages are being sent to stdout */ - if (mboxfd == 1) - fputs(".\n",stderr); - else - ; - } - else - ; - - /* read the message content from the server */ - inheaders = 1; - lines = 0; - sizeticker = MSGBUFSIZE; - while (delimited || len > 0) { - if ((n = SockGets(socket,buf,sizeof(buf))) < 0) - return(PS_SOCKET); - len -= n; - bufp = buf; - if (buf[0] == '\r' || buf[0] == '\n') - inheaders = 0; - if (*bufp == '.') { - bufp++; - if (delimited && *bufp == 0) - break; /* end of message */ + char buf [MSGBUFSIZE]; + char *bufp; + char savec; + char fromBuf[MSGBUFSIZE]; + int n; + int needFrom; + int inheaders; + int lines,sizeticker; + time_t now; + /* This keeps the retrieved message count for display purposes */ + static int msgnum = 0; + + /* set up for status message if outlevel allows it */ + if (outlevel > O_SILENT && outlevel < O_VERBOSE) { + fprintf(stderr,"reading message %d",++msgnum); + /* won't do the '...' if retrieved messages are being sent to stdout */ + if (mboxfd == 1) + fputs(".\n",stderr); } - strcat(bufp,"\n"); + + /* read the message content from the server */ + inheaders = 1; + lines = 0; + sizeticker = MSGBUFSIZE; + while (delimited || len > 0) { + if ((n = SockGets(socket,buf,sizeof(buf))) < 0) + return(PS_SOCKET); + len -= n; + bufp = buf; + if (buf[0] == '\r' || buf[0] == '\n') + inheaders = 0; + if (*bufp == '.') { + bufp++; + if (delimited && *bufp == 0) + break; /* end of message */ + } + strcat(bufp,"\n"); - /* Check for Unix 'From' header, and add a bogus one if it's not - present -- only if not using an MDA. - XXX -- should probably parse real From: header and use its - address field instead of bogus 'POPmail' string. - */ - if (!topipe && lines == 0) { - if (strlen(bufp) >= strlen("From ")) { - savec = *(bufp + 5); - *(bufp + 5) = 0; - needFrom = strcmp(bufp,"From ") != 0; - *(bufp + 5) = savec; - } - else - needFrom = 1; - if (needFrom) { - now = time(NULL); - sprintf(fromBuf,"From POPmail %s",ctime(&now)); - if (write(mboxfd,fromBuf,strlen(fromBuf)) < 0) { - perror("gen_readmsg: write"); - return(PS_IOERR); - } - } - } + /* Check for Unix 'From' header, and add a bogus one if it's not + present -- only if not using an MDA. + XXX -- should probably parse real From: header and use its + address field instead of bogus 'POPmail' string. + */ + if (output != TO_MDA && lines == 0) { + if (strlen(bufp) >= strlen("From ")) { + savec = *(bufp + 5); + *(bufp + 5) = 0; + needFrom = strcmp(bufp,"From ") != 0; + *(bufp + 5) = savec; + } + else + needFrom = 1; + if (needFrom) { + now = time(NULL); + sprintf(fromBuf,"From POPmail %s",ctime(&now)); + if (write(mboxfd,fromBuf,strlen(fromBuf)) < 0) { + perror("gen_readmsg: write"); + return(PS_IOERR); + } + } + } - /* - * Edit some headers so that replies will work properly. - */ - if (inheaders && rewrite) - reply_hack(bufp, pophost); + /* + * Edit some headers so that replies will work properly. + */ + if (inheaders && rewrite) + reply_hack(bufp, pophost); - /* write this line to the file */ - if (write(mboxfd,bufp,strlen(bufp)) < 0) { - perror("gen_readmsg: write"); - return(PS_IOERR); - } + /* write this line to the file */ + if (write(mboxfd,bufp,strlen(bufp)) < 0) { + perror("gen_readmsg: write"); + return(PS_IOERR); + } - sizeticker -= strlen(bufp); - if (sizeticker <= 0) { - if (outlevel > O_SILENT && outlevel < O_VERBOSE && mboxfd != 1) - fputc('.',stderr); - sizeticker = MSGBUFSIZE; - } - lines++; - } - - if (!topipe) { - /* The server may not write the extra newline required by the Unix - mail folder format, so we write one here just in case */ - if (write(mboxfd,"\n",1) < 0) { - perror("gen_readmsg: write"); - return(PS_IOERR); + sizeticker -= strlen(bufp); + if (sizeticker <= 0) { + if (outlevel > O_SILENT && outlevel < O_VERBOSE && mboxfd != 1) + fputc('.',stderr); + sizeticker = MSGBUFSIZE; + } + lines++; } - } - else { - /* The mail delivery agent may require a terminator. Write it if - it has been defined */ + + /* write message terminator, if any */ + switch (output) + { + case TO_SMTP: + if (write(mboxfd,".\r\n",3) < 0) { + perror("gen_readmsg: write"); + return(PS_IOERR); + } + if (SMTP_ok(mboxfd, NULL) != SM_OK) + return(PS_SMTP); + break; + + case TO_FOLDER: + case TO_STDOUT: + /* The server may not write the extra newline required by the Unix + mail folder format, so we write one here just in case */ + if (write(mboxfd,"\n",1) < 0) { + perror("gen_readmsg: write"); + return(PS_IOERR); + } + break; + + case TO_MDA: + /* The mail delivery agent may require a terminator. Write it if + it has been defined */ #ifdef BINMAIL_TERM - if (write(mboxfd,BINMAIL_TERM,strlen(BINMAIL_TERM)) < 0) { - perror("gen_readmsg: write"); - return(PS_IOERR); - } -#endif + if (write(mboxfd,BINMAIL_TERM,strlen(BINMAIL_TERM)) < 0) { + perror("gen_readmsg: write"); + return(PS_IOERR); + } +#endif /* BINMAIL_TERM */ } - /* finish up display output */ - if (outlevel == O_VERBOSE) - fprintf(stderr,"(%d lines of message content)\n",lines); - else if (outlevel > O_SILENT && mboxfd != 1) - fputs(".\n",stderr); - else - ; - return(0); + /* finish up display output */ + if (outlevel == O_VERBOSE) + fprintf(stderr,"(%d lines of message content)\n",lines); + else if (outlevel > O_SILENT && mboxfd != 1) + fputs(".\n",stderr); + else + ; + return(0); } diff --git a/fetchmail.c b/fetchmail.c index a9ed8fc6..2a609973 100644 --- a/fetchmail.c +++ b/fetchmail.c @@ -234,10 +234,10 @@ char **argv; sleep(poll_interval); } while - (poll_interval); + (poll_interval); if (outlevel == O_VERBOSE) - fprintf(stderr, "normal termination\n"); + fprintf(stderr, "normal termination, status %d\n", popstatus); termhook(0); exit(popstatus); diff --git a/fetchmail.h b/fetchmail.h index 571a39d8..6cd1b480 100644 --- a/fetchmail.h +++ b/fetchmail.h @@ -34,7 +34,8 @@ #define PS_IOERR 6 /* local folder I/O woes */ #define PS_ERROR 7 /* some kind of POP3 error condition */ #define PS_EXCLUDE 8 /* exclusion error */ -#define PS_UNDEFINED 9 /* something I hadn't thought of */ +#define PS_SMTP 9 /* SMTP error */ +#define PS_UNDEFINED 10 /* something I hadn't thought of */ /* output noise level */ #define O_SILENT 0 /* mute, max squelch, etc. */ @@ -42,6 +43,7 @@ #define O_VERBOSE 2 /* excessive */ /* output sink type */ +#define TO_SMTP 0 /* use SMTP forwarding */ #define TO_FOLDER 1 /* use a mailbox */ #define TO_STDOUT 2 /* use stdout */ #define TO_MDA 3 /* use agent */ @@ -54,6 +56,7 @@ struct hostrec char password [PASSWORDLEN]; char userfolder [FOLDERLEN]; char remotefolder [FOLDERLEN]; + char smtphost[HOSTLEN]; char mda [MDALEN]; int keep; int protocol; @@ -113,8 +116,6 @@ extern int versioninfo; /* emit only version info */ int gen_ok (char *buf, int socket); void gen_send (); int gen_transact (); -int gen_readmsg (int socket, int mboxfd, long len, int delimited, - char *host, int topipe, int rewrite); /* prototypes for globally callable functions */ int doPOP2 (struct hostrec *); diff --git a/fetchmail.man b/fetchmail.man index db79f303..d88c68ec 100644 --- a/fetchmail.man +++ b/fetchmail.man @@ -110,6 +110,12 @@ fetched mail to programs like procmail. If the MDA string contains machine. Some possible MDAs are "/usr/formail", "/usr/bin/deliver %s", "/usr/lib/sendmail -oem %s". .TP +.B \-S host, --smtphost host +Specify an SMTP forwarding host. If you specify this option, fetched +mail is delivered by SMTP over a socket connection to the specified +host. This simulates the way mail would be delivered to that host +by a normal Internet mail connection. +.TP .B \--protocol proto Specify the protocol to used when communicating with the remote mailserver. If no protocol is specified, @@ -395,6 +401,7 @@ Legal keywords are: remotefolder (or remote) localfolder (or local) mda + smtphost (or smtp) keep flush fetchall @@ -529,6 +536,10 @@ Exclusion error. This means either found another copy of itself already running, or failed in such a way that it isn't sure whether another copy is running. .IP 9 +The +.I popclient. +run failed while trying to do an SMTP port open or transaction. +.IP 10 Something totally undefined occured. This is usually caused by a bug within .I popclient. Do let me know if this happens. @@ -552,6 +563,10 @@ default location of file associating hosts with last message IDs seen (used only with newer RFC1725-compliant servers supporting the UIDL command). .SH BUGS .PP +The --smtphost option doesn't work with POP2. This isn't a protocol problem, +it's because the developers couldn't find a POP2 server to test the +necessary code reorganization with. +.PP The --remotefolder option doesn't work with POP3. .PP The UIDL support for RFC1725-compliant servers without LAST is not yet diff --git a/options.c b/options.c index 70c9ac71..804effa3 100644 --- a/options.c +++ b/options.c @@ -38,10 +38,11 @@ #define LA_REMOTEFILE 15 #define LA_LOCALFILE 16 #define LA_MDA 17 -#define LA_LOGFILE 18 -#define LA_QUIT 19 -#define LA_NOREWRITE 20 -#define LA_YYDEBUG 21 +#define LA_SMTPHOST 18 +#define LA_LOGFILE 19 +#define LA_QUIT 20 +#define LA_NOREWRITE 21 +#define LA_YYDEBUG 22 static char *shortoptions = "23VaKkvscl:Fd:f:u:r:o:m:L:qN"; static struct option longoptions[] = { @@ -63,6 +64,7 @@ static struct option longoptions[] = { {"remote", required_argument, (int *) 0, LA_REMOTEFILE }, {"local", required_argument, (int *) 0, LA_LOCALFILE }, {"mda", required_argument, (int *) 0, LA_MDA }, + {"smtphost", required_argument, (int *) 0, LA_SMTPHOST }, {"logfile", required_argument, (int *) 0, LA_LOGFILE }, {"idfile", required_argument, (int *) 0, LA_IDFILE }, {"quit", no_argument, (int *) 0, LA_QUIT }, @@ -219,6 +221,10 @@ struct hostrec *queryctl; case LA_MDA: strncpy(queryctl->mda,optarg,sizeof(queryctl->mda)-1); break; + case 'S': + case LA_SMTPHOST: + strncpy(queryctl->smtphost,optarg,sizeof(queryctl->smtphost)-1); + break; case 'L': case LA_LOGFILE: logfile = optarg; @@ -254,6 +260,7 @@ struct hostrec *queryctl; fputs(" -k, --keep save new messages after retrieval\n", stderr); fputs(" -l, --limit retrieve at most n message lines\n", stderr); fputs(" -m, --mda set mail user agent to pass to\n", stderr); + fputs(" -S, --smtphost set SMTP forwarding host\n", stderr); fputs(" -q, --quit kill daemon process\n", stderr); fputs(" -s, --silent work silently\n", stderr); fputs(" -v, --verbose work noisily (diagnostic output)\n", stderr); diff --git a/pop2.c b/pop2.c index a5ca1cd0..7c611629 100644 --- a/pop2.c +++ b/pop2.c @@ -84,10 +84,12 @@ struct hostrec *queryctl; fprintf(stderr,"Option --all is not supported with POP2\n"); return(PS_SYNTAX); } +#ifdef FOO else if (queryctl->smtphost[0]) { fprintf(stderr,"Option --smtphost is not supported with POP2\n"); return(PS_SYNTAX); } +#endif /* FOO */ else ; diff --git a/rcfile_l.l b/rcfile_l.l index dfc45cfb..b158d2ad 100644 --- a/rcfile_l.l +++ b/rcfile_l.l @@ -31,6 +31,7 @@ user(name)? { return KW_USERNAME; } pass(word)? { return KW_PASSWORD; } remote(folder)? { return KW_REMOTEFOLDER; } local(folder)? { return KW_LOCALFOLDER; } +smtp(host)? { return KW_SMTPHOST; } mda { return KW_MDA; } keep { yylval.flag = TRUE; return KW_KEEP; } flush { yylval.flag = TRUE; return KW_FLUSH; } diff --git a/rcfile_y.y b/rcfile_y.y index 7232dbaa..5cd20368 100644 --- a/rcfile_y.y +++ b/rcfile_y.y @@ -30,7 +30,7 @@ int yydebug; /* in case we didn't generate with -- debug */ } %token KW_SERVER KW_PROTOCOL KW_USERNAME KW_PASSWORD -%token KW_REMOTEFOLDER KW_LOCALFOLDER KW_MDA KW_EOL KW_DEFAULTS +%token KW_REMOTEFOLDER KW_LOCALFOLDER KW_SMTPHOST KW_MDA KW_EOL KW_DEFAULTS %token PROTO_AUTO PROTO_POP2 PROTO_POP3 PROTO_IMAP PROTO_APOP PROTO_RPOP %token PARAM_STRING %token KW_KEEP KW_FLUSH KW_FETCHALL KW_REWRITE @@ -68,6 +68,7 @@ serv_option_clause: | KW_PASSWORD PARAM_STRING {prc_setpassword($2);} | KW_REMOTEFOLDER PARAM_STRING {prc_setremote($2);} | KW_LOCALFOLDER PARAM_STRING {prc_setlocal($2);} + | KW_SMTPHOST PARAM_STRING {prc_setsmtphost($2);} | KW_MDA PARAM_STRING {prc_setmda($2);} | KW_KEEP {prc_setkeep($1);} | KW_FLUSH {prc_setflush($1);} diff --git a/smtp.c b/smtp.c index c46128e1..8d1a4637 100644 --- a/smtp.c +++ b/smtp.c @@ -1,20 +1,15 @@ -/* Copyright 1996 Harry Hochheiser +/* Copyright 1996 Eric S. Raymond * All rights reserved. * For license terms, see the file COPYING in this directory. */ /*********************************************************************** module: smtp.c - project: popforward + project: popclient programmer: Harry Hochheiser description: Handling of SMTP connections, and processing of mail to be forwarded via SMTP connections. - 7/30/96. Note: since this file is new from scratch, I'll assume - that I'm working on a modern (ANSI) compiler, and I'll use - prototypes. - - ***********************************************************************/ #include @@ -22,22 +17,16 @@ #include #include #include "socket.h" -#include "popforward.h" +#include "popclient.h" #include "smtp.h" -static int POP3_parseHeaders(int number, int socket,char **from,int *replFlag); -static int SMTP_sendMessageHeaders(int mboxfd,struct optrec *option, - char *from); -static int SendData(int f,char *buf,int check); - - /********************************************************************* function: SMTP_helo description: Send a "HELO" message to the SMTP server. arguments: socket TCP/IP socket for connection to SMTP - return value: Result of SMTP_OK: based on codes in popforward.h. + return value: Result of SMTP_OK: based on codes in popclient.h. *********************************************************************/ @@ -45,6 +34,7 @@ int SMTP_helo(int socket,char *host) { int ok; char buf[SMTPBUFSIZE]; + sprintf(buf,"HELO %s\r\n",host); SockPrintf(socket,"%s",buf); ok = SMTP_ok(socket,buf); @@ -64,7 +54,7 @@ int SMTP_helo(int socket,char *host) Note: these args are likely to change, as we get fancier about handling the names. - return value: Result of SMTP_ok: based on codes in popforward.h. + return value: Result of SMTP_ok: based on codes in popclient.h. *********************************************************************/ int SMTP_from(int socket,char *fromuser,char *fromhost) @@ -72,7 +62,7 @@ int SMTP_from(int socket,char *fromuser,char *fromhost) char buf[SMTPBUFSIZE]; /* it's as good as size as any... */ int ok; SockPrintf(socket,"MAIL FROM %s@%s\n",fromuser,fromhost); - ok= SMTP_ok(socket,buf); + ok = SMTP_ok(socket,buf); return ok; } @@ -84,13 +74,13 @@ int SMTP_from(int socket,char *fromuser,char *fromhost) arguments: socket TCP/IP socket for connection to SMTP - toser: user name of recipient - tohost: host name of recipient + touser: user name of recipient + tohost: host name of recipient - return value: Result of SMTP_OK: based on codes in popforward.h. + return value: Result of SMTP_OK: based on codes in popclient.h. *********************************************************************/ -int SMTP_rcpt(int socket,char *touser,char *tohost) +int SMTP_rcpt(int socket,char *touser, char *tohost) { char buf[SMTPBUFSIZE]; /* it's as good as size as any... */ int ok; @@ -109,8 +99,6 @@ int SMTP_rcpt(int socket,char *touser,char *tohost) arguments: socket TCP/IP socket for connection to SMTP - return value: Result of SMTP_OK: based on codes in popforward.h. - *********************************************************************/ int SMTP_data(int socket) { @@ -120,29 +108,23 @@ int SMTP_data(int socket) /********************************************************************* function: SMTP_rset - description: Send a "DATA" message to the SMTP server. + description: Send an "RSET" message to the SMTP server. arguments: socket TCP/IP socket for connection to SMTP - return value: Result of SMTP_OK: based on codes in popforward.h. - *********************************************************************/ void SMTP_rset(int socket) { SockPrintf(socket,"RSET\n"); } - - /********************************************************************* function: SMTP_check description: Returns the status of the smtp connection - 8/13/96, HSH arguments: socket TCP/IP socket for connection to SMTP - - return value: based on codes in popforward.h. + return value: based on codes in popclient.h. Do the dirty work of seeing what the status is.. *********************************************************************/ static int SMTP_check(int socket,char *argbuf) @@ -159,21 +141,16 @@ static int SMTP_check(int socket,char *argbuf) ok = SM_ERROR; } else - ok= SM_UNRECOVERABLE; + ok = SM_UNRECOVERABLE; return (ok); } /********************************************************************* function: SMTP_ok description: Returns the statsus of the smtp connection - 7/31/96, HSH arguments: socket TCP/IP socket for connection to SMTP - - return value: based on codes in popforward.h. - - NOTE: As of 7/31/96 Initial implementation, we're just returning - a dummy value of SM_OK. Eventually, we should really implement this. + return value: based on codes in popclient.h. *********************************************************************/ int SMTP_ok(int socket,char *argbuf) { @@ -198,7 +175,7 @@ int SMTP_ok(int socket,char *argbuf) ok = SM_ERROR; /* It's just a simple error, for*/ /* the current message */ else - ok = SM_UNRECOVERABLE; /* if It still says error, we're */ + ok = SM_UNRECOVERABLE; /* if it still says error, we're */ /* in bad shape */ } return ok; @@ -207,308 +184,12 @@ int SMTP_ok(int socket,char *argbuf) /********************************************************************* function: SMTP_Gets description: Gets a line from the SMTP connection - 7/31/96, HSH arguments: socket TCP/IP socket for connection to SMTP - return value: number of bytes read. - *********************************************************************/ int SMTP_Gets(int socket,char *buf,int sz) { return read(socket,buf,sz); } - -/********************************************************************* - function: POP3_readSMTP - description: Read the message content as described in RFC 1225. - arguments: - number message number. - socket ... to which the server is connected. - mboxfd open file descriptor to which the retrieved message will - be written. - options added 7/30/96, HSH send in the whole options package... - server: originating pop server. 7/30/96, HSH - - This procedure is the SMTP version of the original POP3_readmsg that - is found in the original popforward. 8/2/96, HSH - return value: zero if success else PS_* return code. - calls: SockGets. - globals: reads outlevel. - *********************************************************************/ - -int POP3_readSMTP(int number,int socket,int mboxfd,struct optrec *options, - char *server) -{ - char buf [MSGBUFSIZE]; - char smtpbuf[SMTPBUFSIZE]; - char *bufp; - char fromBuf[MSGBUFSIZE]; - char *summaryHeaders[3]; - int sumLines =0; - int needFrom; - int inheaders; - int lines,sizeticker; - int n; - time_t now; - - char *from = NULL; - int replFlag = 0; - - - /* HSH 8/19/96, Archive file */ - - int archive = 0; - - int msgnum = 0; - - - /* This keeps the retrieved message count for display purposes */ - int ok=0; - - /* set up for status message if outlevel allows it */ - /* Get this into log file as well. */ - - - ok = POP3_parseHeaders(number,socket,&from,&replFlag); - if (ok != 0) - { - if (from) free(from); - return(PS_IOERR); - } - - ok = POP3_sendGet(number,options,socket); - if (ok != 0) - { - if (from) free(from); - return(PS_IOERR); - } - - /* 8/19/96 HSH open the archive file.. */ - - if ((archive =archGetFile(options,&msgnum)) <= 0) - { - if (from) free(from); - return(PS_IOERR); - } - - /* reads the message content from the server */ - inheaders = 1; - lines = 0; - sizeticker = MSGBUFSIZE; - while (1) { - if (SockGets(socket,buf,sizeof(buf)) < 0) - { - if (from) free(from); - return(PS_SOCKET); - } - bufp = buf; - if (buf[0] == '\r' || buf[0] == '\n') - inheaders = 0; - if (*bufp == '.') { - bufp++; - if (*bufp == 0) - break; /* end of message */ - } - strcat(bufp,"\n"); - - /* Check for Unix 'From' header, and add a bogus one if it's not - present -- only if not using an MDA. - XXX -- should probably parse real From: header and use its - address field instead of bogus 'POPmail' string. - */ - - - - if (lines == 0) { - if (strlen(bufp) >= strlen("From ")) - needFrom = strncasecmp(bufp,"From ",strlen("From ")); - else - needFrom = 1; - - if ((ok = SMTP_sendMessageHeaders(mboxfd,options,from)) != SM_OK) - goto smtperr; - - if (needFrom) { - now = time(NULL); - sprintf(fromBuf,"From POPmail %s",ctime(&now)); - if ((ok =SendData(mboxfd,fromBuf,0)) != SM_OK) - goto smtperr; - } - } - - n = write(archive,bufp,strlen(bufp)); - - /* write this line to the file */ - if ((ok =SendData(mboxfd,bufp,0)) != SM_OK) - { - /* Abort the message, so we'll be clear.. */ - SendData(mboxfd,BINMAIL_TERM,0); - goto smtperr; - } - - - sizeticker -= strlen(bufp); - lines++; - } - - if ((ok =SendData(mboxfd,BINMAIL_TERM,0)) !=SM_OK) - goto smtperr; - - - /* finish up display output */ - - if (from) free(from); - if (archive != 0) close(archive); - return(0); - -smtperr: - if (archive != 0) close(archive); - SMTP_rset(mboxfd); - if (from) free(from); - return(ok); -} - -/****************************************************************** - function: POP3_parseHeaders - description: Read the headers of the mail message, in order to grab the - "From" and "reply to" fields, to be used for proper - mail processing. - arguments: - number message number - socket TCP socket for POP connection - from character pointer to hold value of message "FROM" field - replFlag indicates whether or not we've seen a reply flag. - - ret. value: non-zero on success, else zero. - globals: SockGets POP3_OK. - calls: reads outlevel. - *****************************************************************/ -int POP3_parseHeaders(number,socket,from,replFlag) -int number; -int socket; -char **from; -int *replFlag; -{ - - int ok; - char buf[MSGBUFSIZE]; - char *bufp; - int len; - - ok = POP3_sendTOP(number,0,socket); - if (ok != 0) - return(ok); - - ok = -1; /* we're not ok until we find "FROM: " */ - /* read lines in until we're done.. */ - while (1) - { - - if (SockGets(socket,buf,sizeof(buf)) < 0) - { - return(PS_SOCKET); - } - bufp = buf; - - if (*bufp == '.') { - bufp++; - if (*bufp == 0) - break; /* end of message */ - } - - len = strlen(buf); - if (len < strlen(HEADER_FROM)) /* since From header is shorter than reply-to, it */ - continue; /* can't be either type. */ - - /* if it starts with "FROM: ", grab from */ - if (strncasecmp(buf,HEADER_FROM,strlen(HEADER_FROM)) == 0) - { - bufp = buf + strlen(HEADER_FROM); - *from = strdup(bufp); - ok =0; - } - if (strncasecmp(buf,HEADER_REPLY,strlen(HEADER_REPLY)) == 0) - *replFlag = 1; - } - - return(ok); -} - - -/****************************************************************** - function: SMTP_sendMessageHeaders - description: Send the headers for the smtp message along to the mailbox.. - arguments: - number message number - socket TCP socket for POP connection - from character pointer to hold value of message "FROM" field - replFlag indicates whether or not we've seen a reply flag. - - ret. value: non-zero on success, else zero. - globals: SockGets POP3_OK. - calls: reads outlevel. - *****************************************************************/ -int SMTP_sendMessageHeaders(int mboxfd,struct optrec *options,char *from) -{ - char smtpbuf[SMTPBUFSIZE]; - char fromBuf[MSGBUFSIZE]; - - int ok; - - /* 7/30/96, HSH add stuff to print out the SMTP commands. */ - ok = SMTP_ok(mboxfd,smtpbuf); - if (ok != SM_OK) - { - return ok; - } - /* mail is from whoever the headers said it was from */ - sprintf(fromBuf,"MAIL FROM: %s\r\n",from); - if ((ok = SendData(mboxfd,fromBuf,1)) != SM_OK) - return ok; - -/* Now here, add something for the receipt field. 7/30/96, - HSH */ - sprintf(fromBuf,"RCPT TO: %s@%s\r\n",options->forwarduser, - options->forwardhost); - if ((ok=SendData(mboxfd,fromBuf,1)) != SM_OK) - return ok; - - sprintf(fromBuf,"DATA\r\n"); - ok =SendData(mboxfd,fromBuf,1); - return ok; - -} - -/****************************************************************** - function: SendData - description: Write to socket or file, as appropriate for destination - arguments: - f socket or file descriptor - buf buffer to write - dest options destination. - check 1 if we should check for SMTP_ok, 0 if not... - ignored if DEST is not TO_SMTP - 7/30/96 HSH added - - ret. value: 0 if ok, otherwise, non-zero.. - globals: none. - calls: SockWrite - *****************************************************************/ - -static int SendData(int f,char *buf,int check) -{ - int res; - char smtpbuf[SMTPBUFSIZE]; - int len = strlen(buf); - - res = SockWrite(f,buf,len); - if (check != 0) - { - res = SMTP_ok(f,smtpbuf); - } - return res; -} - - diff --git a/socket.c b/socket.c index 664415f2..058b3ea6 100644 --- a/socket.c +++ b/socket.c @@ -20,9 +20,7 @@ #include #include #include -#ifdef SMTP_FORWARD #include -#endif /* SMTP_FORWARD */ #if defined(STDC_HEADERS) #include #endif @@ -188,7 +186,6 @@ int len; return(len); } -#ifdef SMTP_FORWARD /* SockClearHeader: call this procedure in order to kill off any forthcoming Header info from the socket that we no longer want. */ @@ -246,8 +243,6 @@ int SockDataWaiting(int socket) fcntl(socket,F_SETFL,flags); return res; } -#endif /* SMTP_FORWARD */ - int SockPrintf(socket,format,va_alist) int socket; -- cgit v1.2.3