X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=pop3.c;h=9cf8494416073967342ae4a5ad0cd1181d0f51b0;hb=2629c4511c68729d98acfd08637c1f00d3807f49;hp=9b101f03c18e9d6d2837d7fd62deba0feaf0671c;hpb=f203d73c2fb76ee6bba75c645ab4b7b7f2a9f148;p=~andy%2Ffetchmail diff --git a/pop3.c b/pop3.c index 9b101f03..9cf84944 100644 --- a/pop3.c +++ b/pop3.c @@ -52,6 +52,9 @@ static flag has_cram = FALSE; #ifdef OPIE_ENABLE flag has_otp = FALSE; #endif /* OPIE_ENABLE */ +#ifdef NTLM_ENABLE +flag has_ntlm = FALSE; +#endif /* NTLM_ENABLE */ #ifdef SSL_ENABLE static flag has_stls = FALSE; #endif /* SSL_ENABLE */ @@ -82,60 +85,17 @@ char *sdps_envto; static int do_pop3_ntlm(int sock, struct query *ctl, int msn_instead /** if true, send AUTH MSN, else send AUTH NTLM */) { - tSmbNtlmAuthRequest request; - tSmbNtlmAuthChallenge challenge; - tSmbNtlmAuthResponse response; + char msgbuf[POPBUFSIZE+1]; + int result; - char msgbuf[2048]; - int result,len; - gen_send(sock, msn_instead ? "AUTH MSN" : "AUTH NTLM"); - if ((result = gen_recv(sock, msgbuf, sizeof msgbuf))) - return result; - - if (msgbuf[0] != '+') - return PS_AUTHFAIL; - - buildSmbNtlmAuthRequest(&request,ctl->remotename,NULL); - - if (outlevel >= O_DEBUG) - dumpSmbNtlmAuthRequest(stdout, &request); - - memset(msgbuf,0,sizeof msgbuf); - to64frombits (msgbuf, &request, SmbLength(&request)); - - if (outlevel >= O_MONITOR) - report(stdout, "POP3> %s\n", msgbuf); - - strcat(msgbuf,"\r\n"); - SockWrite (sock, msgbuf, strlen (msgbuf)); - - if ((gen_recv(sock, msgbuf, sizeof msgbuf))) + if ((result = ntlm_helper(sock, ctl, "POP3"))) return result; - - len = from64tobits (&challenge, msgbuf, sizeof(msgbuf)); - - if (outlevel >= O_DEBUG) - dumpSmbNtlmAuthChallenge(stdout, &challenge); - - buildSmbNtlmAuthResponse(&challenge, &response,ctl->remotename,ctl->password); - - if (outlevel >= O_DEBUG) - dumpSmbNtlmAuthResponse(stdout, &response); - - memset(msgbuf,0,sizeof msgbuf); - to64frombits (msgbuf, &response, SmbLength(&response)); - - if (outlevel >= O_MONITOR) - report(stdout, "POP3> %s\n", msgbuf); - - strcat(msgbuf,"\r\n"); - SockWrite (sock, msgbuf, strlen (msgbuf)); - + if ((result = gen_recv (sock, msgbuf, sizeof msgbuf))) return result; - + if (strstr (msgbuf, "OK")) return PS_SUCCESS; else @@ -252,6 +212,9 @@ static int capa_probe(int sock) #ifdef OPIE_ENABLE has_otp = FALSE; #endif /* OPIE_ENABLE */ +#ifdef NTLM_ENABLE + has_ntlm = FALSE; +#endif /* NTLM_ENABLE */ ok = gen_transact(sock, "CAPA"); if (ok == PS_SUCCESS) @@ -263,22 +226,32 @@ static int capa_probe(int sock) { if (DOTLINE(buffer)) break; + #ifdef SSL_ENABLE if (strstr(buffer, "STLS")) has_stls = TRUE; #endif /* SSL_ENABLE */ + #if defined(GSSAPI) if (strstr(buffer, "GSSAPI")) has_gssapi = TRUE; #endif /* defined(GSSAPI) */ + #if defined(KERBEROS_V4) if (strstr(buffer, "KERBEROS_V4")) has_kerberos = TRUE; #endif /* defined(KERBEROS_V4) */ + #ifdef OPIE_ENABLE if (strstr(buffer, "X-OTP")) has_otp = TRUE; #endif /* OPIE_ENABLE */ + +#ifdef NTLM_ENABLE + if (strstr(buffer, "NTLM")) + has_ntlm = TRUE; +#endif /* NTLM_ENABLE */ + if (strstr(buffer, "CRAM-MD5")) has_cram = TRUE; } @@ -307,9 +280,7 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) char *challenge; #endif /* OPIE_ENABLE */ #ifdef SSL_ENABLE - char *realhost = ctl->server.via ? ctl->server.via : ctl->server.pollname; flag connection_may_have_tls_errors = FALSE; - flag got_tls = FALSE; #endif /* SSL_ENABLE */ done_capa = FALSE; @@ -329,6 +300,12 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) /* Set this up before authentication quits early. */ set_peek_capable(ctl); + + /* Hack: allow user to force RETR. */ + if (peek_capable && getenv("FETCHMAIL_POP3_FORCE_RETR")) { + peek_capable = 0; + } + /* * The "Maillennium POP3/PROXY server" deliberately truncates * TOP replies after c. 64 or 80 kByte (we have varying reports), so @@ -366,22 +343,7 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) ctl->server.sdps = TRUE; #endif /* SDPS_ENABLE */ -#ifdef NTLM_ENABLE - /* MSN servers require the use of NTLM (MSN) authentication */ - if (!strcasecmp(ctl->server.pollname, "pop3.email.msn.com") || - ctl->server.authenticate == A_MSN) - return (do_pop3_ntlm(sock, ctl, 1) == 0) ? PS_SUCCESS : PS_AUTHFAIL; - if (ctl->server.authenticate == A_NTLM) - return (do_pop3_ntlm(sock, ctl, 0) == 0) ? PS_SUCCESS : PS_AUTHFAIL; -#else - if (ctl->server.authenticate == A_NTLM || ctl->server.authenticate == A_MSN) - { - report(stderr, - GT_("Required NTLM capability not compiled into fetchmail\n")); - } -#endif - - switch (ctl->server.protocol) { + switch (ctl->server.protocol) { case P_POP3: #ifdef RPA_ENABLE /* XXX FIXME: AUTH probing (RFC1734) should become global */ @@ -470,16 +432,25 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) #ifdef SSL_ENABLE if (maybe_tls(ctl)) { - if (has_stls) + char *commonname; + + commonname = ctl->server.pollname; + if (ctl->server.via) + commonname = ctl->server.via; + if (ctl->sslcommonname) + commonname = ctl->sslcommonname; + + if (has_stls + || must_tls(ctl)) /* if TLS is mandatory, ignore capabilities */ { /* Use "tls1" rather than ctl->sslproto because tls1 is the only * protocol that will work with STARTTLS. Don't need to worry * whether TLS is mandatory or opportunistic unless SSLOpen() fails * (see below). */ if (gen_transact(sock, "STLS") == PS_SUCCESS - && SSLOpen(sock, ctl->sslcert, ctl->sslkey, "tls1", ctl->sslcertck, - ctl->sslcertpath, ctl->sslfingerprint, realhost, - ctl->server.pollname, &ctl->remotename) != -1) + && (set_timeout(mytimeout), SSLOpen(sock, ctl->sslcert, ctl->sslkey, "tls1", ctl->sslcertck, + ctl->sslcertfile, ctl->sslcertpath, ctl->sslfingerprint, commonname, + ctl->server.pollname, &ctl->remotename)) != -1) { /* * RFC 2595 says this: @@ -494,7 +465,7 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) * Now that we're confident in our TLS connection we can * guarantee a secure capability re-probe. */ - got_tls = TRUE; + set_timeout(0); done_capa = FALSE; ok = capa_probe(sock); if (ok != PS_SUCCESS) { @@ -502,16 +473,13 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) } if (outlevel >= O_VERBOSE) { - report(stdout, GT_("%s: upgrade to TLS succeeded.\n"), realhost); + report(stdout, GT_("%s: upgrade to TLS succeeded.\n"), commonname); } - } - } - - if (!got_tls) { - if (must_tls(ctl)) { + } else if (must_tls(ctl)) { /* Config required TLS but we couldn't guarantee it, so we must * stop. */ - report(stderr, GT_("%s: upgrade to TLS failed.\n"), realhost); + set_timeout(0); + report(stderr, GT_("%s: upgrade to TLS failed.\n"), commonname); return PS_SOCKET; } else { /* We don't know whether the connection is usable, and there's @@ -519,10 +487,11 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) * allowed til post-authentication), so leave it in an unknown * state, mark it as such, and check more carefully if things * go wrong when we try to authenticate. */ + set_timeout(0); connection_may_have_tls_errors = TRUE; if (outlevel >= O_VERBOSE) { - report(stdout, GT_("%s: opportunistic upgrade to TLS failed, trying to continue.\n"), realhost); + report(stdout, GT_("%s: opportunistic upgrade to TLS failed, trying to continue.\n"), commonname); } } } @@ -552,7 +521,8 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) #if defined(GSSAPI) if (has_gssapi && (ctl->server.authenticate == A_GSSAPI || - ctl->server.authenticate == A_ANY)) + (ctl->server.authenticate == A_ANY + && check_gss_creds("pop", ctl->server.truename) == PS_SUCCESS))) { ok = do_gssauth(sock,"AUTH","pop",ctl->server.truename,ctl->remotename); if (ok == PS_SUCCESS || ctl->server.authenticate != A_ANY) @@ -571,7 +541,25 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) } #endif /* OPIE_ENABLE */ - if (ctl->server.authenticate == A_CRAM_MD5 || +#ifdef NTLM_ENABLE + /* MSN servers require the use of NTLM (MSN) authentication */ + if (!strcasecmp(ctl->server.pollname, "pop3.email.msn.com") || + ctl->server.authenticate == A_MSN) + return (do_pop3_ntlm(sock, ctl, 1) == 0) ? PS_SUCCESS : PS_AUTHFAIL; + if (ctl->server.authenticate == A_NTLM || (has_ntlm && ctl->server.authenticate == A_ANY)) { + ok = do_pop3_ntlm(sock, ctl, 0); + if (ok == 0 || ctl->server.authenticate != A_ANY) + break; + } +#else + if (ctl->server.authenticate == A_NTLM || ctl->server.authenticate == A_MSN) + { + report(stderr, + GT_("Required NTLM capability not compiled into fetchmail\n")); + } +#endif + + if (ctl->server.authenticate == A_CRAM_MD5 || (has_cram && ctl->server.authenticate == A_ANY)) { ok = do_cram_md5(sock, "AUTH", ctl, NULL); @@ -674,13 +662,13 @@ static int pop3_getauth(int sock, struct query *ctl, char *greeting) } /* copy timestamp and password into digestion buffer */ - msg = xmalloc((end-start+1) + strlen(ctl->password) + 1); + msg = (char *)xmalloc((end-start+1) + strlen(ctl->password) + 1); strcpy(msg,start); strcat(msg,ctl->password); - strcpy(ctl->digest, MD5Digest((unsigned char *)msg)); + strcpy((char *)ctl->digest, MD5Digest((unsigned char *)msg)); free(msg); - ok = gen_transact(sock, "APOP %s %s", ctl->remotename, ctl->digest); + ok = gen_transact(sock, "APOP %s %s", ctl->remotename, (char *)ctl->digest); break; case P_RPOP: @@ -758,10 +746,10 @@ static int pop3_gettopid(int sock, int num , char *id, size_t idsize) int got_it; char buf [POPBUFSIZE+1]; snprintf(buf, sizeof(buf), "TOP %d 1", num); - if ((ok = gen_transact(sock, buf )) != 0) + if ((ok = gen_transact(sock, "%s", buf)) != 0) return ok; got_it = 0; - while ((ok = gen_recv(sock, buf, sizeof(buf))) == 0) + while (gen_recv(sock, buf, sizeof(buf)) == 0) { if (DOTLINE(buf)) break; @@ -827,6 +815,7 @@ static int pop3_fastuidl( int sock, struct query *ctl, unsigned int count, int int ok; unsigned int first_nr, last_nr, try_nr; char id [IDLEN+1]; + struct idlist *savep = NULL; /** pointer to cache save_str result, speeds up saves */ first_nr = 0; last_nr = count + 1; @@ -843,7 +832,7 @@ static int pop3_fastuidl( int sock, struct query *ctl, unsigned int count, int if (mark == UID_DELETED || mark == UID_EXPUNGED) { if (outlevel >= O_VERBOSE) - report(stderr, GT_("id=%s (num=%d) was deleted, but is still present!\n"), id, try_nr); + report(stderr, GT_("id=%s (num=%u) was deleted, but is still present!\n"), id, try_nr); /* just mark it as seen now! */ newl->val.status.mark = mark = UID_SEEN; } @@ -868,8 +857,8 @@ static int pop3_fastuidl( int sock, struct query *ctl, unsigned int count, int last_nr = try_nr; /* save it */ - newl = save_str(&ctl->oldsaved, id, UID_UNSEEN); - newl->val.status.num = try_nr; + savep = save_str(savep ? &savep : &ctl->oldsaved, id, UID_UNSEEN); + savep->val.status.num = try_nr; } } if (outlevel >= O_DEBUG && last_nr <= count) @@ -996,9 +985,13 @@ static int pop3_getrange(int sock, /* get the total message count */ gen_send(sock, "STAT"); ok = pop3_ok(sock, buf); - if (ok == 0) - sscanf(buf,"%d %d", countp, bytes); - else + if (ok == 0) { + int asgn; + + asgn = sscanf(buf,"%d %d", countp, bytes); + if (asgn != 2) + return PS_PROTOCOL; + } else return(ok); /* @@ -1052,10 +1045,10 @@ static int pop3_getrange(int sock, if (dofastuidl) return(pop3_fastuidl( sock, ctl, *countp, newp)); /* grab the mailbox's UID list */ - if ((ok = gen_transact(sock, "UIDL")) != 0) + if (gen_transact(sock, "UIDL") != 0) { /* don't worry, yet! do it the slow way */ - if ((ok = pop3_slowuidl(sock, ctl, countp, newp))) + if (pop3_slowuidl(sock, ctl, countp, newp)) { report(stderr, GT_("protocol error while fetching UIDLs\n")); return(PS_ERROR); @@ -1065,18 +1058,19 @@ static int pop3_getrange(int sock, { /* UIDL worked - parse reply */ unsigned long unum; + struct idlist *newl = NULL; *newp = 0; - while ((ok = gen_recv(sock, buf, sizeof(buf))) == PS_SUCCESS) + while (gen_recv(sock, buf, sizeof(buf)) == PS_SUCCESS) { if (DOTLINE(buf)) break; if (parseuid(buf, &unum, id, sizeof(id)) == PS_SUCCESS) { - struct idlist *old, *newl; + struct idlist *old; - newl = save_str(&ctl->newsaved, id, UID_UNSEEN); + newl = save_str(newl ? &newl : &ctl->newsaved, id, UID_UNSEEN); newl->val.status.num = unum; if ((old = str_in_list(&ctl->oldsaved, id, FALSE))) @@ -1276,12 +1270,12 @@ static int pop3_fetch(int sock, struct query *ctl, int number, int *lenp) * as a workaround. */ if (strspn(buf, " \t") == strlen(buf)) strcpy(buf, "<>"); - sdps_envfrom = xmalloc(strlen(buf)+1); + sdps_envfrom = (char *)xmalloc(strlen(buf)+1); strcpy(sdps_envfrom,buf); break; case 5: /* Wrap address with To: <> so nxtaddr() likes it */ - sdps_envto = xmalloc(strlen(buf)+7); + sdps_envto = (char *)xmalloc(strlen(buf)+7); sprintf(sdps_envto,"To: <%s>",buf); break; }