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IMAP.xs
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/*
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Perl interface to the Cyrus imclient routines. This enables the
* use of Perl to implement Cyrus utilities, in particular imtest and cyradm.
*/
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include <pwd.h>
#include <unistd.h>
#include "lib/imclient.h"
#include "lib/imapurl.h"
#include "lib/util.h"
#include "lib/xmalloc.h"
#include "cyrperl.h"
typedef struct xscyrus *Cyrus_IMAP;
/* Perl pre-5.6.0 compatibility */
#ifndef aTHX_
#define aTHX_
#endif
/*
* This is the code from xsutil.c
*/
/* hack, since libcyrus apparently expects fatal() to exist */
void fatal(const char *s, int exit)
{
croak("%s\n", s);
}
/*
* Decrement the refcounts of the Perl SV's in the passed rock, then free the
* rock. This cleans up a callback.
*/
void imclient_xs_callback_free(struct xsccb *rock)
{
struct xscb *xcb;
if (rock) {
/* find the destructor-cleanup version and nuke its record */
for (xcb = rock->client->cb; xcb; xcb = xcb->next) {
if (xcb->rock == rock) break;
}
if (xcb) {
if (xcb->prev)
xcb->prev->next = xcb->next;
else
rock->client->cb = xcb->next;
if (xcb->next) xcb->next->prev = xcb->prev;
if (xcb->name) safefree(xcb->name);
safefree(xcb);
}
/* if (rock->pcb) SvREFCNT_dec(rock->pcb); */
/* if (rock->prock) SvREFCNT_dec(rock->prock); */
safefree(rock);
}
}
/*
* Invoke a Perl callback on behalf of a Cyrus callback. This requires some
* silliness to adapt what we're passed to Perl conventions; specifically,
* the reply struct becomes a hash (passed as a list).
*/
void imclient_xs_cb(struct imclient *client, void *prock,
struct imclient_reply *reply)
{
dSP;
SV* rv;
struct xsccb *rock = (struct xsccb *) prock;
/* push our args onto Perl's stack */
ENTER;
SAVETMPS;
PUSHMARK(SP);
XPUSHs(sv_2mortal(newSVpv("-client", 0)));
rv = newSVsv(&PL_sv_undef);
sv_setref_pv(rv, NULL, (void *) rock->client);
XPUSHs(rv);
if (rock->prock != &PL_sv_undef) {
XPUSHs(sv_2mortal(newSVpv("-rock", 0)));
XPUSHs(sv_mortalcopy(rock->prock));
}
XPUSHs(sv_2mortal(newSVpv("-keyword", 0)));
XPUSHs(sv_2mortal(newSVpv(reply->keyword, 0)));
XPUSHs(sv_2mortal(newSVpv("-text", 0)));
XPUSHs(sv_2mortal(newSVpv(reply->text, 0)));
if (reply->msgno != -1) {
char tmp[100];
XPUSHs(sv_2mortal(newSVpv("-msgno", 0)));
sprintf(tmp,"%ld",reply->msgno);
XPUSHs(sv_2mortal(newSVpv(tmp, 0)));
}
PUTBACK;
/* invoke Perl */
perl_call_sv(rock->pcb, G_VOID|G_DISCARD);
FREETMPS;
SPAGAIN;
LEAVE;
/* clean up */
if (rock->autofree) imclient_xs_callback_free(rock);
}
/*
* Callback used when ::_send is invoked without a callback. The "prock" is an
* AV, which is set to the contents of the imclient_reply; this is detected in
* ::_send, which is calling imclient_processoneevent() repeatedly. (This
* simulates a non-callback-based invocation, for trivial clients.)
*/
void imclient_xs_fcmdcb(struct imclient *client, void *prock,
struct imclient_reply *reply)
{
AV *av;
struct xsccb *rock = (struct xsccb *) prock;
/* SvREFCNT_dec(SvRV(rock->prock)); */
SvRV(rock->prock) = (SV *) (av = newAV());
/* sv_setsv(rock->prock, sv_2mortal(newRV_inc((SV *) (av = newAV())))); */
av_push(av, sv_2mortal(newSVpv(reply->keyword, 0)));
av_push(av, sv_2mortal(newSVpv(reply->text, 0)));
if (reply->msgno != -1) av_push(av, sv_2mortal(newSViv(reply->msgno)));
/* clean up */
if (rock->autofree) imclient_xs_callback_free(rock);
}
static int get_username(void *context, int id,
const char **result, unsigned *len) {
Cyrus_IMAP text = (Cyrus_IMAP)context;
if(id == SASL_CB_AUTHNAME) {
if(len) *len = strlen(text->authname);
*result = text->authname;
return SASL_OK;
} else if (id == SASL_CB_USER) {
if(text->username) {
if(len) *len = strlen(text->username);
*result = text->username;
} else {
if(len) *len = 0;
*result = "";
}
return SASL_OK;
}
return SASL_FAIL;
}
static int get_password(sasl_conn_t *conn, void *context, int id,
sasl_secret_t **psecret) {
Cyrus_IMAP text = (Cyrus_IMAP)context;
if(id != SASL_CB_PASS) return SASL_FAIL;
if(!text->password) {
char *ptr;
/* Using fprintf because printf won't flush under perl 5.8.0 for some
* reason */
fprintf(stdout, "Password: ");
fflush(stdout);
ptr = cyrus_getpass("");
text->password = safemalloc(sizeof(sasl_secret_t) + strlen(ptr));
text->password->len = strlen(ptr);
strncpy((char *) text->password->data, ptr, text->password->len);
}
*psecret = text->password;
return SASL_OK;
}
/* callbacks we support */
static const sasl_callback_t sample_callbacks[NUM_SUPPORTED_CALLBACKS] = {
{ SASL_CB_USER, (int (*)(void))get_username, NULL },
{ SASL_CB_AUTHNAME, (int (*)(void))get_username, NULL },
{ SASL_CB_PASS, (int (*)(void))get_password, NULL },
{ SASL_CB_LIST_END, NULL, NULL }
};
MODULE = Cyrus::IMAP PACKAGE = Cyrus::IMAP
PROTOTYPES: ENABLE
int
CONN_NONSYNCLITERAL()
CODE:
RETVAL = IMCLIENT_CONN_NONSYNCLITERAL;
OUTPUT:
RETVAL
int
CONN_INITIALRESPONSE()
CODE:
RETVAL = IMCLIENT_CONN_INITIALRESPONSE;
OUTPUT:
RETVAL
int
CALLBACK_NUMBERED()
CODE:
RETVAL = CALLBACK_NUMBERED;
OUTPUT:
RETVAL
int
CALLBACK_NOLITERAL()
CODE:
RETVAL = CALLBACK_NOLITERAL;
OUTPUT:
RETVAL
MODULE = Cyrus::IMAP PACKAGE = Cyrus::IMAP PREFIX=imclient_
PROTOTYPES: ENABLE
SV *
imclient_new(class, host = "localhost", port = 0, flags = 0)
char *class;
char *host
char *port
int flags;
PREINIT:
struct imclient *client;
int rc;
SV *bang;
Cyrus_IMAP rv;
int i;
CODE:
/* Allocate and setup the return value */
rv = safemalloc(sizeof *rv);
rv->authenticated = 0;
memcpy(rv->callbacks, sample_callbacks, sizeof(sample_callbacks));
/* Setup respective contexts */
for(i=0; i < NUM_SUPPORTED_CALLBACKS; i++) {
rv->callbacks[i].context = rv;
}
/* Connect */
rc = imclient_connect(&client, host, port, rv->callbacks);
switch (rc) {
case -1:
Perl_croak(aTHX_ "imclient_connect: unknown host \"%s\"", host);
safefree(rv);
break;
case -2:
Perl_croak(aTHX_ "imclient_connect: unknown service \"%s\"", port);
safefree(rv);
break;
case 0:
if (client) {
rv->class = safemalloc(strlen(class) + 1);
strcpy(rv->class, class);
rv->username = rv->authname = NULL;
rv->password = NULL;
rv->imclient = client;
imclient_setflags(client, flags);
rv->flags = flags;
rv->cb = 0;
rv->cnt = 1;
break;
}
/*FALLTHROUGH*/
default:
bang = perl_get_sv("^E", TRUE);
sv_setiv(bang, rc);
XSRETURN_UNDEF;
}
ST(0) = sv_newmortal();
/* fprintf(stderr, "!NEW %p %s\n", rv, class); */
sv_setref_pv(ST(0), class, (void *) rv);
void
imclient_DESTROY(client)
Cyrus_IMAP client
PREINIT:
struct xscb *nx;
CODE:
/* fprintf(stderr, "!DESTROY %p %d\n", client, client->cnt); */
if (!client->cnt--) {
/* printf("closing\n"); */
imclient_close(client->imclient);
while (client->cb) {
nx = client->cb->next;
if (client->cb->name) safefree(client->cb->name);
/* if (client->cb->rock->pcb) SvREFCNT_dec(client->cb->rock->pcb); */
/* if (client->cb->rock->prock) SvREFCNT_dec(client->cb->rock->prock); */
safefree(client->cb->rock);
client->cb = nx;
}
safefree(client->password);
safefree(client->class);
safefree(client);
}
void
imclient_setflags(client, flags)
Cyrus_IMAP client
int flags
PPCODE:
imclient_setflags(client->imclient, flags);
client->flags |= flags;
void
imclient_clearflags(client, flags)
Cyrus_IMAP client
int flags
PPCODE:
imclient_clearflags(client->imclient, flags);
client->flags &= ~flags;
int
imclient_flags(client)
Cyrus_IMAP client
PPCODE:
/* why is there no way to query this? */
RETVAL = client->flags;
char *
imclient_servername(client)
Cyrus_IMAP client
PREINIT:
char *cp;
CODE:
cp = imclient_servername(client->imclient);
RETVAL = cp;
OUTPUT:
RETVAL
void
imclient_processoneevent(client)
Cyrus_IMAP client
PPCODE:
imclient_processoneevent(client->imclient);
SV *
imclient__authenticate(client, mechlist, service, user, auth, password, minssf, maxssf)
Cyrus_IMAP client
char* mechlist
char* service
char* user
char* auth
char* password
int minssf
int maxssf
PREINIT:
int rc;
CODE:
ST(0) = sv_newmortal();
if(client->authenticated) {
ST(0) = &PL_sv_no;
return;
}
/* If the user parameter is undef, set user to be NULL */
if(!SvOK(ST(3))) user = NULL;
if(!SvOK(ST(5))) password = NULL;
client->username = user; /* AuthZid */
client->authname = auth; /* Authid */
if(password) {
if(client->password) safefree(client->password);
client->password =
safemalloc(sizeof(sasl_secret_t) + strlen(password));
client->password->len = strlen(password);
strncpy((char *) client->password->data, password, client->password->len);
}
rc = imclient_authenticate(client->imclient, mechlist, service, user,
minssf, maxssf);
if (rc)
ST(0) = &PL_sv_no;
else {
client->authenticated = 1;
ST(0) = &PL_sv_yes;
}
int
imclient_havetls()
CODE:
#ifdef HAVE_SSL
RETVAL = 1;
#else
RETVAL = 0;
#endif /* HAVE_SSL */
OUTPUT:
RETVAL
SV *
imclient__starttls(client, tls_cert_file, tls_key_file, CAfile, CApath)
Cyrus_IMAP client
char* tls_cert_file
char* tls_key_file
char* CAfile
char* CApath
PREINIT:
int rc;
CODE:
ST(0) = sv_newmortal();
/* If the tls_{cert, key}_file parameters are undef, set to be NULL */
if(!SvOK(ST(2))) tls_cert_file = NULL;
if(!SvOK(ST(3))) tls_key_file = NULL;
#ifdef HAVE_SSL
rc = imclient_starttls(client->imclient, tls_cert_file, tls_key_file, CAfile, CApath);
if (rc)
ST(0) = &PL_sv_no;
else {
ST(0) = &PL_sv_yes;
}
#else
ST(0) = &PL_sv_no;
#endif /* HAVE_SSL */
void
imclient_addcallback(client, ...)
Cyrus_IMAP client
PREINIT:
int arg;
HV *cb;
char *keyword;
STRLEN klen;
int flags;
SV **val;
SV *pcb;
SV *prock;
struct xsccb *rock;
struct xscb *xcb;
PPCODE:
/*
* $client->addcallback(\%cb[, ...]);
*
* where %cb is:
*
* -trigger => 'OK' (or 'NO', etc.)
* -flags => CALLBACK_NOLITERAL|CALLBACK_NUMBERED (optional)
* -callback => \&sub or undef (optional)
* -rock => SV, reference or undef (optional)
*
* this is moderately complicated because the callback is a Perl ref...
*/
for (arg = 1; arg < items; arg++) {
if (!SvROK(ST(arg)) || SvTYPE(SvRV(ST(arg))) != SVt_PVHV)
Perl_croak(aTHX_ "addcallback: arg %d not a hash reference", arg);
cb = (HV *) SvRV(ST(arg));
/* pull callback crud */
if (((val = hv_fetch(cb, "-trigger", 8, 0)) ||
(val = hv_fetch(cb, "Trigger", 7, 0))) &&
SvTYPE(*val) == SVt_PV)
keyword = SvPV(*val, klen);
else
Perl_croak(aTHX_ "addcallback: arg %d missing trigger", arg);
if ((((val = hv_fetch(cb, "-flags", 6, 0)) ||
(val = hv_fetch(cb, "Flags", 5, 0)))))
{
flags = SvIV(*val);
} else {
flags = 0;
}
if (((val = hv_fetch(cb, "-callback", 9, 0)) ||
(val = hv_fetch(cb, "Callback", 8, 0))) &&
((SvROK(*val) && SvTYPE(SvRV(*val)) == SVt_PVCV) ||
SvTYPE(*val) == SVt_PV))
pcb = *val;
else
pcb = 0;
if ((val = hv_fetch(cb, "-rock", 5, 0)) ||
(val = hv_fetch(cb, "Rock", 4, 0)))
prock = *val;
else
prock = &PL_sv_undef;
/*
* build our internal rock, which is used by our internal
* callback handler to invoke the Perl callback
*/
if (!pcb)
rock = 0;
else {
rock = (struct xsccb *) safemalloc(sizeof *rock);
/* bump refcounts on these so they don't go away */
rock->pcb = SvREFCNT_inc(pcb);
if (!prock) prock = &PL_sv_undef;
rock->prock = SvREFCNT_inc(prock);
rock->client = client;
rock->autofree = 0;
}
/* and add the resulting callback */
imclient_addcallback(client->imclient, keyword, flags,
(pcb ? imclient_xs_cb : 0), rock, 0);
/* update the callback list, possibly freeing old callback info */
for (xcb = client->cb; xcb; xcb = xcb->next) {
if (xcb->name && strcmp(xcb->name, keyword) == 0 &&
xcb->flags == flags)
break;
}
if (xcb) {
if (xcb->rock->pcb) SvREFCNT_dec(xcb->rock->pcb);
if (xcb->rock->prock) SvREFCNT_dec(xcb->rock->prock);
safefree(xcb->rock);
}
else if (pcb) {
xcb = (struct xscb *) safemalloc(sizeof *xcb);
xcb->prev = 0;
xcb->name = safemalloc(strlen(keyword) + 1);
strcpy(xcb->name, keyword);
xcb->flags = flags;
xcb->next = client->cb;
client->cb = xcb;
}
if (pcb)
xcb->rock = rock;
else if (xcb) {
if (xcb->prev)
xcb->prev->next = xcb->next;
else
client->cb = xcb->next;
if (xcb->next) xcb->next->prev = xcb->prev;
safefree(xcb->name);
safefree(xcb);
}
}
void
imclient__send(client, finishproc, finishrock, str)
Cyrus_IMAP client
SV *finishproc
SV *finishrock
char *str
PREINIT:
STRLEN arg;
SV *pcb;
SV *prock;
struct xscb *xcb;
struct xsccb *rock;
char *cp, *dp, *xstr;
PPCODE:
/*
* The C version does escapes. It also does varargs, which I would
* much rather not have to reimplement in XS code; so that is done in
* Perl instead. (The minus being that I have to track any changes
* to the C API; but it'll be easier in Perl than in XS.)
*
* We still have to do the callback, though.
*
* @@@ the Perl code can't do synchronous literals
*/
if (SvROK(finishproc) && SvTYPE(SvRV(finishproc)) == SVt_PVCV)
pcb = SvRV(finishproc);
else
pcb = 0;
if (!pcb)
prock = sv_2mortal(newRV_inc(&PL_sv_undef));
else if (finishrock)
prock = finishrock;
else
prock = sv_2mortal(newSVsv(&PL_sv_undef));
/*
* build our internal rock, which is used by our internal
* callback handler to invoke the Perl callback
*/
rock = (struct xsccb *) safemalloc(sizeof *rock);
/* bump refcounts on these so they don't go away */
if (!pcb) pcb = sv_2mortal(newSVsv(&PL_sv_undef));
rock->pcb = pcb;
if (!prock) prock = sv_2mortal(newSVsv(&PL_sv_undef));
rock->prock = prock;
rock->client = client;
rock->autofree = 1;
/* register this callback so it can be gc'ed properly (pointless?) */
xcb = (struct xscb *) safemalloc(sizeof *xcb);
xcb->prev = 0;
xcb->name = 0;
xcb->flags = 0;
xcb->rock = rock;
xcb->next = client->cb;
client->cb = xcb;
/* protect %'s in the string, since the caller does the dirty work */
arg = 0;
for (cp = str; *cp; cp++)
if (*cp == '%') arg++;
xstr = safemalloc(strlen(str) + arg + 1);
dp = xstr;
for (cp = str; *cp; cp++) {
*dp++ = *cp;
if (*cp == '%') *dp++ = *cp;
}
*dp = 0;
/* and do it to it */
imclient_send(client->imclient,
(SvTRUE(pcb) ?
imclient_xs_cb :
imclient_xs_fcmdcb),
(void *) rock, xstr);
safefree(xstr);
/* if there was no Perl callback, spin on events until finished */
if (!SvTRUE(pcb)) {
AV *av;
while (SvTYPE(SvRV(prock)) != SVt_PVAV) {
PUTBACK;
imclient_processoneevent(client->imclient);
SPAGAIN;
}
/* push the result; if scalar, stuff text in $@ */
av = (AV *) SvRV(prock);
if (GIMME_V == G_SCALAR) {
EXTEND(SP, 1);
pcb = av_shift(av);
if (strcmp(SvPV(pcb, arg), "OK") == 0)
PUSHs(&PL_sv_yes);
else
PUSHs(&PL_sv_no);
pcb = perl_get_sv("@", TRUE);
sv_setsv(pcb, av_shift(av));
if (av_len(av) != -1) {
pcb = perl_get_sv("^E", TRUE);
sv_setsv(pcb, av_shift(av));
}
} else {
EXTEND(SP, av_len(av) + 1);
PUSHs(av_shift(av));
PUSHs(av_shift(av));
if (av_len(av) != -1) PUSHs(av_shift(av));
}
/* and free it */
/* SvREFCNT_dec(prock); */
}
void
imclient_getselectinfo(client)
Cyrus_IMAP client
PREINIT:
int fd, writep;
PPCODE:
imclient_getselectinfo(client->imclient, &fd, &writep);
/*
* should this return a glob? (evil, but would solve a nasty issue
* in &send()...)
*
* also, should this check for scalar context and complain?
*/
EXTEND(SP, 2);
PUSHs(sv_2mortal(newSViv(fd)));
if (writep)
PUSHs(&PL_sv_yes);
else
PUSHs(&PL_sv_no);
void
imclient_fromURL(client,url)
Cyrus_IMAP client
char *url
PREINIT:
struct imapurl imapurl;
PPCODE:
imapurl_fromURL(&imapurl, url);
if(!imapurl.server || !imapurl.mailbox) {
safefree(imapurl.freeme);
XSRETURN_UNDEF;
}
XPUSHs(sv_2mortal(newSVpv(imapurl.server, 0)));
XPUSHs(sv_2mortal(newSVpv(imapurl.mailbox, 0)));
/* newSVpv copies the above */
safefree(imapurl.freeme);
XSRETURN(2);
void
imclient_toURL(client,server,box)
Cyrus_IMAP client
char *server
char *box
PREINIT:
char *out_buf;
int len;
struct imapurl imapurl;
PPCODE:
len = strlen(server)+strlen(box);
out_buf = safemalloc(4*len);
memset(&imapurl, 0, sizeof(struct imapurl));
imapurl.server = server;
imapurl.mailbox = box;
imapurl_toURL(out_buf, &imapurl);
if(!out_buf[0]) {
safefree(out_buf);
XSRETURN_UNDEF;
}
XPUSHs(sv_2mortal(newSVpv(out_buf, 0)));
/* newSVpv copies this */
safefree(out_buf);
XSRETURN(1);

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