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drv_imap.c
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/*
* mbsync - mailbox synchronizer
* Copyright (C) 2000-2002 Michael R. Elkins <me@mutt.org>
* Copyright (C) 2002-2004 Oswald Buddenhagen <ossi@users.sf.net>
* Copyright (C) 2004 Theodore Y. Ts'o <tytso@mit.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* As a special exception, mbsync may be linked with the OpenSSL library,
* despite that library's more restrictive license.
*/
#include "isync.h"
#include <assert.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <limits.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#if 1
# include <openssl/ssl.h>
# include <openssl/err.h>
# include <openssl/hmac.h>
#endif
typedef struct imap_server_conf {
struct imap_server_conf *next;
char *name;
char *tunnel;
char *host;
int port;
char *user;
char *pass;
#if 1
char *cert_file;
unsigned use_imaps:1;
unsigned require_ssl:1;
unsigned use_sslv2:1;
unsigned use_sslv3:1;
unsigned use_tlsv1:1;
unsigned require_cram:1;
#endif
} imap_server_conf_t;
typedef struct imap_store_conf {
store_conf_t gen;
imap_server_conf_t *server;
unsigned use_namespace:1;
} imap_store_conf_t;
typedef struct imap_message {
message_t gen;
/* int seq; will be needed when expunges are tracked */
} imap_message_t;
#define NIL (void*)0x1
#define LIST (void*)0x2
typedef struct _list {
struct _list *next, *child;
char *val;
int len;
} list_t;
typedef struct {
int fd;
#if 1
SSL *ssl;
unsigned int use_ssl:1;
#endif
} Socket_t;
typedef struct {
Socket_t sock;
int bytes;
int offset;
char buf[1024];
} buffer_t;
struct imap_cmd;
#define max_in_progress 50 /* make this configurable? */
char *accountEmail;
typedef struct imap {
int uidnext; /* from SELECT responses */
list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
string_list_t *boxes; /* LIST results */
message_t **msgapp; /* FETCH results */
unsigned caps, rcaps; /* CAPABILITY results */
/* command queue */
int nexttag, num_in_progress, literal_pending;
struct imap_cmd *in_progress, **in_progress_append;
#if 1
SSL_CTX *SSLContext;
#endif
buffer_t buf; /* this is BIG, so put it last */
} imap_t;
typedef struct imap_store {
store_t gen;
imap_t *imap;
const char *prefix;
unsigned /*currentnc:1,*/ trashnc:1;
} imap_store_t;
struct imap_cmd_cb {
int (*cont)( imap_store_t *ctx, struct imap_cmd *cmd, const char *prompt );
void (*done)( imap_store_t *ctx, struct imap_cmd *cmd, int response);
void *ctx;
char *data;
int dlen;
int uid;
unsigned create:1, trycreate:1;
};
struct imap_cmd {
struct imap_cmd *next;
struct imap_cmd_cb cb;
char *cmd;
int tag;
};
#define CAP(cap) (imap->caps & (1 << (cap)))
enum CAPABILITY {
NOLOGIN = 0,
UIDPLUS,
LITERALPLUS,
NAMESPACE,
#if 1
CRAM,
STARTTLS,
#endif
};
static const char *cap_list[] = {
"LOGINDISABLED",
"UIDPLUS",
"LITERAL+",
"NAMESPACE",
#if 1
"AUTH=CRAM-MD5",
"STARTTLS",
#endif
};
#define RESP_OK 0
#define RESP_NO 1
#define RESP_BAD 2
static int get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd );
static const char *Flags[] = {
"Draft",
"Flagged",
"Answered",
"Seen",
"Deleted",
};
#if 1
/* this gets called when a certificate is to be verified */
static int
verify_cert( SSL *ssl )
{
X509 *cert;
int err;
char buf[256];
int ret = -1;
BIO *bio;
cert = SSL_get_peer_certificate( ssl );
if (!cert) {
fprintf( stderr, "Error, no server certificate\n" );
return -1;
}
err = SSL_get_verify_result( ssl );
if (err == X509_V_OK)
return 0;
fprintf( stderr, "Error, can't verify certificate: %s (%d)\n",
X509_verify_cert_error_string(err), err );
X509_NAME_oneline( X509_get_subject_name( cert ), buf, sizeof(buf) );
info( "\nSubject: %s\n", buf );
X509_NAME_oneline( X509_get_issuer_name( cert ), buf, sizeof(buf) );
info( "Issuer: %s\n", buf );
bio = BIO_new( BIO_s_mem() );
ASN1_TIME_print( bio, X509_get_notBefore( cert ) );
memset( buf, 0, sizeof(buf) );
BIO_read( bio, buf, sizeof(buf) - 1 );
info( "Valid from: %s\n", buf );
ASN1_TIME_print( bio, X509_get_notAfter( cert ) );
memset( buf, 0, sizeof(buf) );
BIO_read( bio, buf, sizeof(buf) - 1 );
BIO_free( bio );
info( " to: %s\n", buf );
fputs( "\n*** WARNING *** There is no way to verify this certificate. It is\n"
" possible that a hostile attacker has replaced the\n"
" server certificate. Continue at your own risk!\n"
"\nAccept this certificate anyway? [no]: ", stderr );
if (fgets( buf, sizeof(buf), stdin ) && (buf[0] == 'y' || buf[0] == 'Y')) {
ret = 0;
fprintf( stderr, "\n*** Fine, but don't say I didn't warn you!\n\n" );
}
return ret;
}
static int
init_ssl_ctx( imap_store_t *ctx )
{
imap_t *imap = ctx->imap;
imap_store_conf_t *conf = (imap_store_conf_t *)ctx->gen.conf;
imap_server_conf_t *srvc = conf->server;
SSL_METHOD *method;
int options = 0;
if (srvc->use_tlsv1 && !srvc->use_sslv2 && !srvc->use_sslv3)
method = TLSv1_client_method();
else
method = SSLv23_client_method();
imap->SSLContext = SSL_CTX_new( method );
if (!srvc->cert_file) {
fprintf( stderr, "Error, CertificateFile not defined\n" );
return -1;
} else if (!SSL_CTX_load_verify_locations( imap->SSLContext, srvc->cert_file, NULL )) {
fprintf( stderr, "Error while loading certificate file '%s': %s\n",
srvc->cert_file, ERR_error_string( ERR_get_error(), 0 ) );
return -1;
}
if (!srvc->use_sslv2)
options |= SSL_OP_NO_SSLv2;
if (!srvc->use_sslv3)
options |= SSL_OP_NO_SSLv3;
if (!srvc->use_tlsv1)
options |= SSL_OP_NO_TLSv1;
SSL_CTX_set_options( imap->SSLContext, options );
/* we check the result of the verification after SSL_connect() */
SSL_CTX_set_verify( imap->SSLContext, SSL_VERIFY_NONE, 0 );
return 0;
}
#endif /* HAVE_LIBSSL */
static void
socket_perror( const char *func, Socket_t *sock, int ret )
{
#if 1
int err;
if (sock->use_ssl) {
switch ((err = SSL_get_error( sock->ssl, ret ))) {
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
if ((err = ERR_get_error()) == 0) {
if (ret == 0)
fprintf( stderr, "SSL_%s:got EOF\n", func );
else
fprintf( stderr, "SSL_%s:%d:%s\n", func, errno, strerror(errno) );
} else
fprintf( stderr, "SSL_%s:%d:%s\n", func, err, ERR_error_string( err, 0 ) );
return;
default:
fprintf( stderr, "SSL_%s:%d:unhandled SSL error\n", func, err );
break;
}
return;
}
#else
(void)sock;
#endif
if (ret < 0)
perror( func );
else
fprintf( stderr, "%s: unexpected EOF\n", func );
}
static int
socket_read( Socket_t *sock, char *buf, int len )
{
int n =
#if 1
sock->use_ssl ? SSL_read( sock->ssl, buf, len ) :
#endif
read( sock->fd, buf, len );
if (n <= 0) {
socket_perror( "read", sock, n );
close( sock->fd );
sock->fd = -1;
}
return n;
}
static int
socket_write( Socket_t *sock, char *buf, int len )
{
int n =
#if 1
sock->use_ssl ? SSL_write( sock->ssl, buf, len ) :
#endif
write( sock->fd, buf, len );
if (n != len) {
socket_perror( "write", sock, n );
close( sock->fd );
sock->fd = -1;
}
return n;
}
static int
socket_pending( Socket_t *sock )
{
int num = -1;
if (ioctl( sock->fd, FIONREAD, &num ) < 0)
return -1;
if (num > 0)
return num;
#if 1
if (sock->use_ssl)
return SSL_pending( sock->ssl );
#endif
return 0;
}
/* simple line buffering */
static int
buffer_gets( buffer_t * b, char **s )
{
int n;
int start = b->offset;
*s = b->buf + start;
for (;;) {
/* make sure we have enough data to read the \r\n sequence */
if (b->offset + 1 >= b->bytes) {
if (start) {
/* shift down used bytes */
*s = b->buf;
assert( start <= b->bytes );
n = b->bytes - start;
if (n)
memcpy( b->buf, b->buf + start, n );
b->offset -= start;
b->bytes = n;
start = 0;
}
n = socket_read( &b->sock, b->buf + b->bytes,
sizeof(b->buf) - b->bytes );
if (n <= 0)
return -1;
b->bytes += n;
}
if (b->buf[b->offset] == '\r') {
assert( b->offset + 1 < b->bytes );
if (b->buf[b->offset + 1] == '\n') {
b->buf[b->offset] = 0; /* terminate the string */
b->offset += 2; /* next line */
if (Verbose)
puts( *s );
return 0;
}
}
b->offset++;
}
/* not reached */
}
static struct imap_cmd *
v_issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb,
const char *fmt, va_list ap )
{
imap_t *imap = ctx->imap;
struct imap_cmd *cmd;
int n, bufl;
char buf[1024];
cmd = nfmalloc( sizeof(struct imap_cmd) );
nfvasprintf( &cmd->cmd, fmt, ap );
cmd->tag = ++imap->nexttag;
if (cb)
cmd->cb = *cb;
else
memset( &cmd->cb, 0, sizeof(cmd->cb) );
while (imap->literal_pending)
get_cmd_result( ctx, 0 );
bufl = nfsnprintf( buf, sizeof(buf), cmd->cb.data ? CAP(LITERALPLUS) ?
"%d %s{%d+}\r\n" : "%d %s{%d}\r\n" : "%d %s\r\n",
cmd->tag, cmd->cmd, cmd->cb.dlen );
if (Verbose) {
if (imap->num_in_progress)
printf( "(%d in progress) ", imap->num_in_progress );
if (memcmp( cmd->cmd, "LOGIN", 5 ))
printf( ">>> %s", buf );
else
printf( ">>> %d LOGIN <user> <pass>\n", cmd->tag );
}
if (socket_write( &imap->buf.sock, buf, bufl ) != bufl) {
free( cmd->cmd );
free( cmd );
if (cb && cb->data)
free( cb->data );
return NULL;
}
if (cmd->cb.data) {
if (CAP(LITERALPLUS)) {
n = socket_write( &imap->buf.sock, cmd->cb.data, cmd->cb.dlen );
free( cmd->cb.data );
if (n != cmd->cb.dlen ||
(n = socket_write( &imap->buf.sock, "\r\n", 2 )) != 2)
{
free( cmd->cmd );
free( cmd );
return NULL;
}
cmd->cb.data = 0;
} else
imap->literal_pending = 1;
} else if (cmd->cb.cont)
imap->literal_pending = 1;
cmd->next = 0;
*imap->in_progress_append = cmd;
imap->in_progress_append = &cmd->next;
imap->num_in_progress++;
return cmd;
}
static struct imap_cmd *
issue_imap_cmd( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
{
struct imap_cmd *ret;
va_list ap;
va_start( ap, fmt );
ret = v_issue_imap_cmd( ctx, cb, fmt, ap );
va_end( ap );
return ret;
}
static struct imap_cmd *
issue_imap_cmd_w( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
{
imap_t *imap = ctx->imap;
struct imap_cmd *ret;
va_list ap;
va_start( ap, fmt );
ret = v_issue_imap_cmd( ctx, cb, fmt, ap );
va_end( ap );
while (imap->num_in_progress > max_in_progress ||
socket_pending( &imap->buf.sock ))
get_cmd_result( ctx, 0 );
return ret;
}
static int
imap_exec( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
{
va_list ap;
struct imap_cmd *cmdp;
va_start( ap, fmt );
cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
va_end( ap );
if (!cmdp)
return RESP_BAD;
return get_cmd_result( ctx, cmdp );
}
static int
imap_exec_b( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
{
va_list ap;
struct imap_cmd *cmdp;
va_start( ap, fmt );
cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
va_end( ap );
if (!cmdp)
return DRV_STORE_BAD;
switch (get_cmd_result( ctx, cmdp )) {
case RESP_BAD: return DRV_STORE_BAD;
case RESP_NO: return DRV_BOX_BAD;
default: return DRV_OK;
}
}
static int
imap_exec_m( imap_store_t *ctx, struct imap_cmd_cb *cb, const char *fmt, ... )
{
va_list ap;
struct imap_cmd *cmdp;
va_start( ap, fmt );
cmdp = v_issue_imap_cmd( ctx, cb, fmt, ap );
va_end( ap );
if (!cmdp)
return DRV_STORE_BAD;
switch (get_cmd_result( ctx, cmdp )) {
case RESP_BAD: return DRV_STORE_BAD;
case RESP_NO: return DRV_MSG_BAD;
default: return DRV_OK;
}
}
/*
static void
drain_imap_replies( imap_t *imap )
{
while (imap->num_in_progress)
get_cmd_result( imap, 0 );
}
*/
static int
is_atom( list_t *list )
{
return list && list->val && list->val != NIL && list->val != LIST;
}
static int
is_list( list_t *list )
{
return list && list->val == LIST;
}
static void
free_list( list_t *list )
{
list_t *tmp;
for (; list; list = tmp) {
tmp = list->next;
if (is_list( list ))
free_list( list->child );
else if (is_atom( list ))
free( list->val );
free( list );
}
}
static int
parse_imap_list_l( imap_t *imap, char **sp, list_t **curp, int level )
{
list_t *cur;
char *s = *sp, *p;
int n, bytes;
for (;;) {
while (isspace( (unsigned char)*s ))
s++;
if (level && *s == ')') {
s++;
break;
}
*curp = cur = nfmalloc( sizeof(*cur) );
curp = &cur->next;
cur->val = 0; /* for clean bail */
if (*s == '(') {
/* sublist */
s++;
cur->val = LIST;
if (parse_imap_list_l( imap, &s, &cur->child, level + 1 ))
goto bail;
} else if (imap && *s == '{') {
/* literal */
bytes = cur->len = strtol( s + 1, &s, 10 );
if (*s != '}')
goto bail;
s = cur->val = nfmalloc( cur->len );
/* dump whats left over in the input buffer */
n = imap->buf.bytes - imap->buf.offset;
if (n > bytes)
/* the entire message fit in the buffer */
n = bytes;
memcpy( s, imap->buf.buf + imap->buf.offset, n );
s += n;
bytes -= n;
/* mark that we used part of the buffer */
imap->buf.offset += n;
/* now read the rest of the message */
while (bytes > 0) {
if ((n = socket_read (&imap->buf.sock, s, bytes)) <= 0)
goto bail;
s += n;
bytes -= n;
}
if (buffer_gets( &imap->buf, &s ))
goto bail;
} else if (*s == '"') {
/* quoted string */
s++;
p = s;
for (; *s != '"'; s++)
if (!*s)
goto bail;
cur->len = s - p;
s++;
cur->val = nfmalloc( cur->len + 1 );
memcpy( cur->val, p, cur->len );
cur->val[cur->len] = 0;
} else {
/* atom */
p = s;
for (; *s && !isspace( (unsigned char)*s ); s++)
if (level && *s == ')')
break;
cur->len = s - p;
if (cur->len == 3 && !memcmp ("NIL", p, 3))
cur->val = NIL;
else {
cur->val = nfmalloc( cur->len + 1 );
memcpy( cur->val, p, cur->len );
cur->val[cur->len] = 0;
}
}
if (!level)
break;
if (!*s)
goto bail;
}
*sp = s;
*curp = 0;
return 0;
bail:
*curp = 0;
return -1;
}
static list_t *
parse_imap_list( imap_t *imap, char **sp )
{
list_t *head;
if (!parse_imap_list_l( imap, sp, &head, 0 ))
return head;
free_list( head );
return NULL;
}
static list_t *
parse_list( char **sp )
{
return parse_imap_list( 0, sp );
}
static int
parse_fetch( imap_t *imap, char *cmd ) /* move this down */
{
list_t *tmp, *list, *flags;
char *body = 0;
imap_message_t *cur;
msg_data_t *msgdata;
struct imap_cmd *cmdp;
int uid = 0, mask = 0, status = 0, size = 0;
unsigned i;
list = parse_imap_list( imap, &cmd );
if (!is_list( list )) {
fprintf( stderr, "IMAP error: bogus FETCH response\n" );
free_list( list );
return -1;
}
for (tmp = list->child; tmp; tmp = tmp->next) {
if (is_atom( tmp )) {
if (!strcmp( "UID", tmp->val )) {
tmp = tmp->next;
if (is_atom( tmp ))
uid = atoi( tmp->val );
else
fprintf( stderr, "IMAP error: unable to parse UID\n" );
} else if (!strcmp( "FLAGS", tmp->val )) {
tmp = tmp->next;
if (is_list( tmp )) {
for (flags = tmp->child; flags; flags = flags->next) {
if (is_atom( flags )) {
if (flags->val[0] == '\\') { /* ignore user-defined flags for now */
if (!strcmp( "Recent", flags->val + 1)) {
status |= M_RECENT;
goto flagok;
}
for (i = 0; i < as(Flags); i++)
if (!strcmp( Flags[i], flags->val + 1 )) {
mask |= 1 << i;
goto flagok;
}
fprintf( stderr, "IMAP warning: unknown system flag %s\n", flags->val );
}
flagok: ;
} else
fprintf( stderr, "IMAP error: unable to parse FLAGS list\n" );
}
status |= M_FLAGS;
} else
fprintf( stderr, "IMAP error: unable to parse FLAGS\n" );
} else if (!strcmp( "RFC822.SIZE", tmp->val )) {
tmp = tmp->next;
if (is_atom( tmp ))
size = atoi( tmp->val );
else
fprintf( stderr, "IMAP error: unable to parse SIZE\n" );
} else if (!strcmp( "BODY[]", tmp->val )) {
tmp = tmp->next;
if (is_atom( tmp )) {
body = tmp->val;
tmp->val = 0; /* don't free together with list */
size = tmp->len;
} else
fprintf( stderr, "IMAP error: unable to parse BODY[]\n" );
}
}
}
if (body) {
for (cmdp = imap->in_progress; cmdp; cmdp = cmdp->next)
if (cmdp->cb.uid == uid)
goto gotuid;
fprintf( stderr, "IMAP error: unexpected FETCH response (UID %d)\n", uid );
free_list( list );
return -1;
gotuid:
msgdata = (msg_data_t *)cmdp->cb.ctx;
msgdata->data = body;
msgdata->len = size;
msgdata->crlf = 1;
if (status & M_FLAGS)
msgdata->flags = mask;
} else if (uid) { /* ignore async flag updates for now */
/* XXX this will need sorting for out-of-order (multiple queries) */
cur = nfcalloc( sizeof(*cur) );
*imap->msgapp = &cur->gen;
imap->msgapp = &cur->gen.next;
cur->gen.next = 0;
cur->gen.uid = uid;
cur->gen.flags = mask;
cur->gen.status = status;
cur->gen.size = size;
}
free_list( list );
return 0;
}
static void
parse_capability( imap_t *imap, char *cmd )
{
char *arg;
unsigned i;
imap->caps = 0x80000000;
while ((arg = next_arg( &cmd )))
for (i = 0; i < as(cap_list); i++)
if (!strcmp( cap_list[i], arg ))
imap->caps |= 1 << i;
imap->rcaps = imap->caps;
}
static int
parse_response_code( imap_store_t *ctx, struct imap_cmd_cb *cb, char *s )
{
imap_t *imap = ctx->imap;
char *arg, *p;
if (*s != '[')
return RESP_OK; /* no response code */
s++;
if (!(p = strchr( s, ']' ))) {
fprintf( stderr, "IMAP error: malformed response code\n" );
return RESP_BAD;
}
*p++ = 0;
arg = next_arg( &s );
if (!strcmp( "UIDVALIDITY", arg )) {
if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg ))) {
fprintf( stderr, "IMAP error: malformed UIDVALIDITY status\n" );
return RESP_BAD;
}
} else if (!strcmp( "UIDNEXT", arg )) {
if (!(arg = next_arg( &s )) || !(imap->uidnext = atoi( arg ))) {
fprintf( stderr, "IMAP error: malformed NEXTUID status\n" );
return RESP_BAD;
}
} else if (!strcmp( "CAPABILITY", arg )) {
parse_capability( imap, s );
} else if (!strcmp( "ALERT", arg )) {
/* RFC2060 says that these messages MUST be displayed
* to the user
*/
for (; isspace( (unsigned char)*p ); p++);
fprintf( stderr, "*** IMAP ALERT *** %s\n", p );
} else if (cb && cb->ctx && !strcmp( "APPENDUID", arg )) {
if (!(arg = next_arg( &s )) || !(ctx->gen.uidvalidity = atoi( arg )) ||
!(arg = next_arg( &s )) || !(*(int *)cb->ctx = atoi( arg )))
{
fprintf( stderr, "IMAP error: malformed APPENDUID status\n" );
return RESP_BAD;
}
}
return RESP_OK;
}
static void
parse_search( imap_t *imap, char *cmd )
{
char *arg;
struct imap_cmd *cmdp;
int uid;
arg = next_arg( &cmd );
if (!arg)
return;
if (!(uid = atoi( arg ))) {
fprintf( stderr, "IMAP error: malformed SEARCH response\n" );
return;
}
/* Find the first command that expects a UID - this is guaranteed
* to come in-order, as there are no other means to identify which
* SEARCH response belongs to which request.
*/
for (cmdp = imap->in_progress; cmdp; cmdp = cmdp->next)
if (cmdp->cb.uid == -1) {
*(int *)cmdp->cb.ctx = uid;
return;
}
fprintf( stderr, "IMAP error: unexpected SEARCH response (UID %u)\n", uid );
}
static void
parse_list_rsp( imap_store_t *ctx, char *cmd )
{
imap_t *imap = ctx->imap;
char *arg;
list_t *list, *lp;
int l;
list = parse_list( &cmd );
if (list->val == LIST)
for (lp = list->child; lp; lp = lp->next)
if (is_atom( lp ) && !strcasecmp( lp->val, "\\NoSelect" )) {
free_list( list );
return;
}
free_list( list );
(void) next_arg( &cmd ); /* skip delimiter */
arg = next_arg( &cmd );
l = strlen( ctx->gen.conf->path );
if (memcmp( arg, ctx->gen.conf->path, l ))
return;
arg += l;
if (!memcmp( arg + strlen( arg ) - 5, ".lock", 5 )) /* workaround broken servers */
return;
add_string_list( &imap->boxes, arg );
}
static int
get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
{
imap_t *imap = ctx->imap;
struct imap_cmd *cmdp, **pcmdp, *ncmdp;
char *cmd, *arg, *arg1, *p;
int n, resp, resp2, tag;
for (;;) {
if (buffer_gets( &imap->buf, &cmd ))
return RESP_BAD;
arg = next_arg( &cmd );
if (*arg == '*') {
arg = next_arg( &cmd );
if (!arg) {
fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
return RESP_BAD;
}
if (!strcmp( "NAMESPACE", arg )) {
imap->ns_personal = parse_list( &cmd );
imap->ns_other = parse_list( &cmd );
imap->ns_shared = parse_list( &cmd );
} else if (!strcmp( "OK", arg ) || !strcmp( "BAD", arg ) ||
!strcmp( "NO", arg ) || !strcmp( "BYE", arg )) {
if ((resp = parse_response_code( ctx, 0, cmd )) != RESP_OK)
return resp;
} else if (!strcmp( "CAPABILITY", arg ))
parse_capability( imap, cmd );
else if (!strcmp( "LIST", arg ))
parse_list_rsp( ctx, cmd );
else if (!strcmp( "SEARCH", arg ))
parse_search( imap, cmd );
else if ((arg1 = next_arg( &cmd ))) {
if (!strcmp( "EXISTS", arg1 ))
ctx->gen.count = atoi( arg );
else if (!strcmp( "RECENT", arg1 ))
ctx->gen.recent = atoi( arg );
else if(!strcmp ( "FETCH", arg1 )) {
if (parse_fetch( imap, cmd ))
return RESP_BAD;
}
} else {
fprintf( stderr, "IMAP error: unable to parse untagged response\n" );
return RESP_BAD;
}
} else if (!imap->in_progress) {
fprintf( stderr, "IMAP error: unexpected reply: %s %s\n", arg, cmd ? cmd : "" );
return RESP_BAD;
} else if (*arg == '+') {
/* This can happen only with the last command underway, as
it enforces a round-trip. */
cmdp = (struct imap_cmd *)((char *)imap->in_progress_append -
offsetof(struct imap_cmd, next));
if (cmdp->cb.data) {
n = socket_write( &imap->buf.sock, cmdp->cb.data, cmdp->cb.dlen );
free( cmdp->cb.data );
cmdp->cb.data = 0;
if (n != (int)cmdp->cb.dlen)
return RESP_BAD;
} else if (cmdp->cb.cont) {
if (cmdp->cb.cont( ctx, cmdp, cmd ))
return RESP_BAD;
} else {
fprintf( stderr, "IMAP error: unexpected command continuation request\n" );
return RESP_BAD;
}
if (socket_write( &imap->buf.sock, "\r\n", 2 ) != 2)
return RESP_BAD;
if (!cmdp->cb.cont)
imap->literal_pending = 0;
if (!tcmd)
return DRV_OK;
} else {
tag = atoi( arg );
for (pcmdp = &imap->in_progress; (cmdp = *pcmdp); pcmdp = &cmdp->next)
if (cmdp->tag == tag)
goto gottag;
fprintf( stderr, "IMAP error: unexpected tag %s\n", arg );
return RESP_BAD;
gottag:
if (!(*pcmdp = cmdp->next))
imap->in_progress_append = pcmdp;
imap->num_in_progress--;
if (cmdp->cb.cont || cmdp->cb.data)