commit 7cb85c1c551ef1d044a59767ef20dc8cf5153d4b
Author: Oswald Buddenhagen <o...@kde.org>
Date: Sun Mar 13 14:44:49 2011 +0100
*** full async
configure.in | 2 +-
src/drv_imap.c | 475 +++++++++++++++++++++++++++------------------
src/isync.h | 54 +++++-
src/mbsync.1 | 4 +-
src/socket.c | 499 ++++++++++++++++++++++++++++++++++++------------
5 files changed, 705 insertions(+), 329 deletions(-)
diff --git a/configure.in b/configure.in
index 0bfc364..c3268e4 100644
--- a/configure.in
+++ b/configure.in
@@ -10,7 +10,7 @@ if test "$GCC" = yes; then
CPPFLAGS="$CPPFLAGS -D_BSD_SOURCE"
fi
-AC_CHECK_HEADERS(sys/filio.h sys/poll.h sys/select.h)
+AC_CHECK_HEADERS(sys/poll.h sys/select.h)
AC_CHECK_FUNCS(vasprintf)
AC_CHECK_LIB(socket, socket, [SOCK_LIBS="-lsocket"])
diff --git a/src/drv_imap.c b/src/drv_imap.c
index d818811..e00a29d 100644
--- a/src/drv_imap.c
+++ b/src/drv_imap.c
@@ -67,27 +67,39 @@ typedef struct _list {
int len;
} list_t;
+#define MAX_LIST_DEPTH 5
+
+typedef struct parse_list_state {
+ list_t *head, **stack[MAX_LIST_DEPTH];
+ int level, need_bytes;
+} parse_list_state_t;
+
struct imap_cmd;
typedef struct imap_store {
store_t gen;
const char *prefix;
int uidnext; /* from SELECT responses */
- unsigned trashnc:1; /* trash folder's existence is not confirmed yet */
+ /* trash folder's existence is not confirmed yet */
+ enum { TrashUnknown, TrashChecking, TrashKnown } trashnc;
unsigned got_namespace:1;
list_t *ns_personal, *ns_other, *ns_shared; /* NAMESPACE info */
message_t **msgapp; /* FETCH results */
unsigned caps; /* CAPABILITY results */
int ref_count; /* for ordered destruction */
int store_canceled; /* context is invalid, only ref_count keeps it
alive */
+ parse_list_state_t parse_list_sts;
/* command queue */
- int nexttag, num_in_progress, literal_pending;
+ int nexttag, num_pending, num_in_progress, literal_pending;
+ struct imap_cmd *pending, **pending_append;
struct imap_cmd *in_progress, **in_progress_append;
/* Used during sequential operations like connect */
enum { GreetingPending = 0, GreetingBad, GreetingOk, GreetingPreauth }
greeting;
+ int canceling; /* imap_cancel() is in progress */
union {
void (*imap_open)( store_t *srv, void *aux );
+ void (*imap_cancel)( void *aux );
} callbacks;
void *callback_aux;
@@ -100,6 +112,8 @@ struct imap_cmd {
int tag;
struct {
+ /* Will be called on each continuation request until it resets
this pointer.
+ * Needs to invoke bad_callback and return < 0 on error. */
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 );
char *data;
@@ -170,9 +184,6 @@ static const char *cap_list[] = {
#define RESP_NO 1
#define RESP_CANCEL 2
-static void get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd );
-
-
static const char *Flags[] = {
"Draft",
"Flagged",
@@ -220,37 +231,20 @@ done_imap_cmd( imap_store_t *ctx, struct imap_cmd *cmd,
int response )
return cancel ? -1 : 0;
}
-static struct imap_cmd *
-v_submit_imap_cmd( imap_store_t *ctx, struct imap_cmd *cmd,
- const char *fmt, va_list ap )
+static int
+send_imap_cmd( imap_store_t *ctx, struct imap_cmd *cmd )
{
int bufl, litplus;
const char *buffmt;
+ char *p;
char buf[1024];
- assert( ctx );
- assert( ctx->gen.bad_callback );
- assert( cmd );
- assert( cmd->param.done );
-
- ctx->ref_count++;
-
- while (ctx->literal_pending) {
- get_cmd_result( ctx, 0 );
- if (ctx->store_canceled)
- goto bail2;
- }
-
- if (ctx->conn.fd < 0)
- goto bail; /* We got disconnected and had no chance to report
it yet. */
-
+ socket_delimit( &ctx->conn );
cmd->tag = ++ctx->nexttag;
- if (fmt)
- nfvasprintf( &cmd->cmd, fmt, ap );
if (!cmd->param.data) {
buffmt = "%d %s\r\n";
litplus = 0;
- } else if ((cmd->param.to_trash && ctx->trashnc) || !CAP(LITERALPLUS)) {
+ } else if ((cmd->param.to_trash && ctx->trashnc == TrashUnknown) ||
!CAP(LITERALPLUS)) {
buffmt = "%d %s{%d}\r\n";
litplus = 0;
} else {
@@ -270,7 +264,7 @@ v_submit_imap_cmd( imap_store_t *ctx, struct imap_cmd *cmd,
if (socket_write( &ctx->conn, buf, bufl, KeepOwn ) < 0)
goto bail;
if (litplus) {
- char *p = cmd->param.data;
+ p = cmd->param.data;
cmd->param.data = 0;
if (socket_write( &ctx->conn, p, cmd->param.data_len, GiveOwn )
< 0 ||
socket_write( &ctx->conn, "\r\n", 2, KeepOwn ) < 0)
@@ -278,32 +272,89 @@ v_submit_imap_cmd( imap_store_t *ctx, struct imap_cmd
*cmd,
} else if (cmd->param.cont || cmd->param.data) {
ctx->literal_pending = 1;
}
+ if (cmd->param.to_trash && ctx->trashnc == TrashUnknown)
+ ctx->trashnc = TrashChecking;
cmd->next = 0;
*ctx->in_progress_append = cmd;
ctx->in_progress_append = &cmd->next;
ctx->num_in_progress++;
- return cmd;
+ return 0;
bail:
- ctx->gen.bad_callback( ctx->gen.bad_callback_aux );
- bail2:
done_imap_cmd( ctx, cmd, RESP_CANCEL );
- return NULL;
+ return -1;
}
-static struct imap_cmd *
-submit_imap_cmd( imap_store_t *ctx, struct imap_cmd *cmd, const char *fmt, ...
)
+static int
+cmd_submittable( imap_store_t *ctx, struct imap_cmd *cmd )
{
- struct imap_cmd *ret;
- va_list ap;
+ return !ctx->literal_pending &&
+ !(cmd->param.to_trash && ctx->trashnc == TrashChecking) &&
+ ctx->num_in_progress < ((imap_store_conf_t
*)ctx->gen.conf)->server->max_in_progress;
+}
- va_start( ap, fmt );
- ret = v_submit_imap_cmd( ctx, cmd, fmt, ap );
- va_end( ap );
- return ret;
+static int
+flush_imap_cmds( imap_store_t *ctx )
+{
+ struct imap_cmd *cmd;
+
+ while ((cmd = ctx->pending) && cmd_submittable( ctx, cmd )) {
+ if (!(ctx->pending = cmd->next))
+ ctx->pending_append = &ctx->pending;
+ ctx->num_pending--;
+ if (send_imap_cmd( ctx, cmd ) < 0)
+ return -1;
+ }
+ return 0;
}
static void
+cancel_pending_imap_cmds( imap_store_t *ctx )
+{
+ struct imap_cmd *cmd;
+
+ while ((cmd = ctx->pending)) {
+ if (!(ctx->pending = cmd->next))
+ ctx->pending_append = &ctx->pending;
+ ctx->num_pending--;
+ done_imap_cmd( ctx, cmd, RESP_CANCEL );
+ }
+}
+
+static void
+cancel_submitted_imap_cmds( imap_store_t *ctx )
+{
+ struct imap_cmd *cmd;
+
+ while ((cmd = ctx->in_progress)) {
+ ctx->in_progress = cmd->next; /* don't update
in_progress_append - store is dead */
+ ctx->num_in_progress--;
+ done_imap_cmd( ctx, cmd, RESP_CANCEL );
+ }
+}
+
+static int
+submit_imap_cmd( imap_store_t *ctx, struct imap_cmd *cmd )
+{
+ assert( ctx );
+ assert( ctx->gen.bad_callback );
+ assert( cmd );
+ assert( cmd->param.done );
+
+ ctx->ref_count++;
+
+ if (ctx->pending || !cmd_submittable( ctx, cmd )) {
+ cmd->next = 0;
+ *ctx->pending_append = cmd;
+ ctx->pending_append = &cmd->next;
+ ctx->num_pending++;
+ return 0;
+ }
+
+ return send_imap_cmd( ctx, cmd );
+}
+
+static int
imap_exec( imap_store_t *ctx, struct imap_cmd *cmdp,
void (*done)( imap_store_t *ctx, struct imap_cmd *cmd, int response
),
const char *fmt, ... )
@@ -314,12 +365,9 @@ imap_exec( imap_store_t *ctx, struct imap_cmd *cmdp,
cmdp = new_imap_cmd( sizeof(*cmdp) );
cmdp->param.done = done;
va_start( ap, fmt );
- cmdp = v_submit_imap_cmd( ctx, cmdp, fmt, ap );
+ nfvasprintf( &cmdp->cmd, fmt, ap );
va_end( ap );
- if (!cmdp)
- return;
-
- get_cmd_result( ctx, cmdp );
+ return submit_imap_cmd( ctx, cmdp );
}
static void
@@ -369,27 +417,6 @@ imap_refcounted_done( struct imap_cmd_refcounted_state
*sts )
free( sts );
}
-/*
-static void
-drain_imap_replies( imap_store_t *ctx )
-{
- while (ctx->num_in_progress)
- get_cmd_result( ctx, 0 );
-}
-*/
-
-/* call with a ref on ctx! */
-static void
-process_imap_replies( imap_store_t *ctx )
-{
- while (ctx->num_in_progress > ((imap_store_conf_t
*)ctx->gen.conf)->server->max_in_progress ||
- socket_pending( &ctx->conn )) {
- get_cmd_result( ctx, 0 );
- if (ctx->store_canceled)
- break;
- }
-}
-
static int
is_atom( list_t *list )
{
@@ -417,66 +444,76 @@ free_list( list_t *list )
}
}
+enum {
+ LIST_OK,
+ LIST_PARTIAL,
+ LIST_BAD
+};
+
static int
-parse_imap_list_l( imap_store_t *ctx, char **sp, list_t **curp, int level )
+parse_imap_list( imap_store_t *ctx, char **sp, parse_list_state_t *sts )
{
- list_t *cur;
+ list_t *cur, **curp;
char *s = *sp, *p;
- int n, bytes;
+ int bytes;
+
+ assert( sts );
+ assert( sts->level > 0 );
+ curp = sts->stack[--sts->level];
+ bytes = sts->need_bytes;
+ if (bytes >= 0) {
+ sts->need_bytes = -1;
+ if (!bytes)
+ goto getline;
+ cur = (list_t *)((char *)curp - offsetof(list_t, next));
+ s = cur->val + cur->len - bytes;
+ goto getbytes;
+ }
for (;;) {
while (isspace( (unsigned char)*s ))
s++;
- if (level && *s == ')') {
+ if (sts->level && *s == ')') {
s++;
- break;
+ curp = sts->stack[--sts->level];
+ goto next;
}
*curp = cur = nfmalloc( sizeof(*cur) );
- curp = &cur->next;
cur->val = 0; /* for clean bail */
+ curp = &cur->next;
+ *curp = 0; /* ditto */
if (*s == '(') {
/* sublist */
+ if (sts->level == MAX_LIST_DEPTH)
+ goto bail;
s++;
cur->val = LIST;
- if (parse_imap_list_l( ctx, &s, &cur->child, level + 1
))
- goto bail;
+ sts->stack[sts->level++] = curp;
+ curp = &cur->child;
+ *curp = 0; /* for clean bail */
+ goto next2;
} else if (ctx && *s == '{') {
/* literal */
bytes = cur->len = strtol( s + 1, &s, 10 );
- if (*s != '}')
+ if (*s != '}' || *++s)
goto bail;
s = cur->val = nfmalloc( cur->len );
- /* dump whats left over in the input buffer */
- n = ctx->conn.bytes - ctx->conn.offset;
+ getbytes:
+ bytes -= socket_read( &ctx->conn, s, bytes );
+ if (bytes > 0)
+ goto postpone;
- if (n > bytes)
- /* the entire message fit in the buffer */
- n = bytes;
-
- memcpy( s, ctx->conn.buf + ctx->conn.offset, n );
- s += n;
- bytes -= n;
-
- /* mark that we used part of the buffer */
- ctx->conn.offset += n;
-
- /* now read the rest of the message */
- while (bytes > 0) {
- if ((n = socket_read( &ctx->conn, s, bytes ))
<= 0)
- goto bail;
- s += n;
- bytes -= n;
- }
if (DFlags & XVERBOSE) {
puts( "=========" );
fwrite( cur->val, cur->len, 1, stdout );
puts( "=========" );
}
- if (buffer_gets( &ctx->conn, &s ))
- goto bail;
+ getline:
+ if (!(s = socket_read_line( &ctx->conn )))
+ goto postpone;
} else if (*s == '"') {
/* quoted string */
s++;
@@ -493,7 +530,7 @@ parse_imap_list_l( imap_store_t *ctx, char **sp, list_t
**curp, int level )
/* atom */
p = s;
for (; *s && !isspace( (unsigned char)*s ); s++)
- if (level && *s == ')')
+ if (sts->level && *s == ')')
break;
cur->len = s - p;
if (cur->len == 3 && !memcmp ("NIL", p, 3))
@@ -505,56 +542,75 @@ parse_imap_list_l( imap_store_t *ctx, char **sp, list_t
**curp, int level )
}
}
- if (!level)
+ next:
+ if (!sts->level)
break;
+ next2:
if (!*s)
goto bail;
}
*sp = s;
- *curp = 0;
- return 0;
+ return LIST_OK;
+ postpone:
+ if (sts->level < MAX_LIST_DEPTH) {
+ sts->stack[sts->level++] = curp;
+ sts->need_bytes = bytes;
+ return LIST_PARTIAL;
+ }
bail:
- *curp = 0;
- return -1;
+ free_list( sts->head );
+ return LIST_BAD;
}
-static list_t *
-parse_imap_list( imap_store_t *ctx, char **sp )
+static void
+parse_list_init( parse_list_state_t *sts )
{
- list_t *head;
-
- if (!parse_imap_list_l( ctx, sp, &head, 0 ))
- return head;
- free_list( head );
- return NULL;
+ sts->need_bytes = -1;
+ sts->level = 1;
+ sts->head = 0;
+ sts->stack[0] = &sts->head;
}
static list_t *
parse_list( char **sp )
{
- return parse_imap_list( 0, sp );
+ parse_list_state_t sts;
+ parse_list_init( &sts );
+ if (parse_imap_list( 0, sp, &sts ) == LIST_OK)
+ return sts.head;
+ return NULL;
}
static int
parse_fetch( imap_store_t *ctx, char *cmd ) /* move this down */
{
list_t *tmp, *list, *flags;
- char *body = 0;
+ char *body;
imap_message_t *cur;
msg_data_t *msgdata;
struct imap_cmd *cmdp;
- int uid = 0, mask = 0, status = 0, size = 0;
+ int uid, mask, status, size;
unsigned i;
- list = parse_imap_list( ctx, &cmd );
+ switch (parse_imap_list( ctx, &cmd, &ctx->parse_list_sts )) {
+ case LIST_OK:
+ ctx->parse_list_sts.level = 0;
+ list = ctx->parse_list_sts.head;
+ break;
+ case LIST_PARTIAL:
+ return 0;
+ default:
+ return -1;
+ }
if (!is_list( list )) {
error( "IMAP error: bogus FETCH response\n" );
- free_list( list );
- return -1;
+ goto bail;
}
+ body = 0;
+ uid = mask = status = size = 0;
for (tmp = list->child; tmp; tmp = tmp->next) {
if (is_atom( tmp )) {
if (!strcmp( "UID", tmp->val )) {
@@ -612,8 +668,7 @@ parse_fetch( imap_store_t *ctx, char *cmd ) /* move this
down */
if (cmdp->param.uid == uid)
goto gotuid;
error( "IMAP error: unexpected FETCH response (UID %d)\n", uid
);
- free_list( list );
- return -1;
+ goto bail;
gotuid:
msgdata = ((struct imap_cmd_fetch_msg *)cmdp)->msg_data;
msgdata->data = body;
@@ -632,6 +687,7 @@ parse_fetch( imap_store_t *ctx, char *cmd ) /* move this
down */
cur->gen.size = size;
}
+ bail:
free_list( list );
return 0;
}
@@ -760,14 +816,22 @@ static void imap_open_store_greeted( imap_store_t * );
static void get_cmd_result_p2( imap_store_t *, struct imap_cmd *, int );
static void
-get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
+imap_socket_read( void *aux )
{
+ imap_store_t *ctx = (imap_store_t *)aux;
struct imap_cmd *cmdp, **pcmdp;
char *cmd, *arg, *arg1, *p;
int cancel, resp, resp2, tag, greeted;
greeted = ctx->greeting;
- while (!buffer_gets( &ctx->conn, &cmd )) {
+ if (ctx->parse_list_sts.level) {
+ cmd = 0;
+ goto do_fetch;
+ }
+
+ for (;;) {
+ if (!(cmd = socket_read_line( &ctx->conn )))
+ return;
arg = next_arg( &cmd );
if (*arg == '*') {
arg = next_arg( &cmd );
@@ -801,6 +865,8 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
else if (!strcmp( "RECENT", arg1 ))
ctx->gen.recent = atoi( arg );
else if(!strcmp ( "FETCH", arg1 )) {
+ parse_list_init( &ctx->parse_list_sts );
+ do_fetch:
if (parse_fetch( ctx, cmd ))
break; /* stream is likely to
be useless now */
}
@@ -825,24 +891,22 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
cmdp = ctx->in_progress;
if (cmdp->param.data) {
if (cmdp->param.to_trash)
- ctx->trashnc = 0; /* Can't get NO
[TRYCREATE] any more. */
+ ctx->trashnc = TrashKnown; /* Can't get
NO [TRYCREATE] any more. */
p = cmdp->param.data;
cmdp->param.data = 0;
if (socket_write( &ctx->conn, p,
cmdp->param.data_len, GiveOwn ) < 0)
- break;
+ return;
} else if (cmdp->param.cont) {
- if (cmdp->param.cont( ctx, cmdp, cmd ))
- break;
+ if (cmdp->param.cont( ctx, cmdp, cmd ) < 0)
+ return;
} else {
error( "IMAP error: unexpected command
continuation request\n" );
break;
}
if (socket_write( &ctx->conn, "\r\n", 2, KeepOwn ) < 0)
- break;
+ return;
if (!cmdp->param.cont)
ctx->literal_pending = 0;
- if (!tcmd)
- return;
} else {
tag = atoi( arg );
for (pcmdp = &ctx->in_progress; (cmdp = *pcmdp); pcmdp
= &cmdp->next)
@@ -859,7 +923,7 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
arg = next_arg( &cmd );
if (!strcmp( "OK", arg )) {
if (cmdp->param.to_trash)
- ctx->trashnc = 0; /* Can't get NO
[TRYCREATE] any more. */
+ ctx->trashnc = TrashKnown; /* Can't get
NO [TRYCREATE] any more. */
resp = RESP_OK;
} else {
if (!strcmp( "NO", arg )) {
@@ -870,14 +934,9 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
struct imap_cmd_trycreate *cmd2
=
(struct
imap_cmd_trycreate *)new_imap_cmd( sizeof(*cmd2) );
cmd2->orig_cmd = cmdp;
- cmd2->gen.param.done =
get_cmd_result_p2;
- ctx->ref_count++;
p = strchr( cmdp->cmd, '"' );
- submit_imap_cmd( ctx,
&cmd2->gen, "CREATE %.*s", strchr( p + 1, '"' ) - p + 1, p );
- if (ctx->store_canceled)
- tcmd = 0;
- deref_store( ctx );
- if (!tcmd)
+ if (imap_exec( ctx, &cmd2->gen,
get_cmd_result_p2,
+ "CREATE %.*s",
strchr( p + 1, '"' ) - p + 1, p ) < 0)
return;
continue;
}
@@ -894,8 +953,17 @@ get_cmd_result( imap_store_t *ctx, struct imap_cmd *tcmd )
ctx->gen.bad_callback(
ctx->gen.bad_callback_aux );
if (done_imap_cmd( ctx, cmdp, resp ) < 0)
return;
- if (!tcmd || tcmd == cmdp)
+ if (flush_imap_cmds( ctx ) < 0)
return;
+ if (ctx->canceling && !ctx->in_progress) {
+ ctx->canceling = 0;
+ ctx->ref_count++;
+ ctx->callbacks.imap_cancel( ctx->callback_aux );
+ cancel = ctx->store_canceled;
+ deref_store( ctx );
+ if (cancel)
+ return;
+ }
}
}
ctx->gen.bad_callback( ctx->gen.bad_callback_aux );
@@ -912,10 +980,19 @@ get_cmd_result_p2( imap_store_t *ctx, struct imap_cmd
*cmd, int response )
} else {
ctx->uidnext = 0;
ocmd->param.create = 0;
- submit_imap_cmd( ctx, ocmd, 0 );
+ submit_imap_cmd( ctx, ocmd );
}
}
+static void
+imap_socket_fail( void *aux )
+{
+ imap_store_t *ctx = (imap_store_t *)aux;
+
+ socket_close( &ctx->conn );
+ ctx->gen.bad_callback( ctx->gen.bad_callback_aux );
+}
+
/******************* imap_cancel_store *******************/
static void
@@ -924,6 +1001,8 @@ imap_cancel_store( store_t *gctx )
imap_store_t *ctx = (imap_store_t *)gctx;
socket_close( &ctx->conn );
+ cancel_submitted_imap_cmds( ctx );
+ cancel_pending_imap_cmds( ctx );
free_generic_messages( gctx->msgs );
free_string_list( ctx->gen.boxes );
free_list( ctx->ns_personal );
@@ -1000,11 +1079,14 @@ do_cram_auth( imap_store_t *ctx, struct imap_cmd *cmdp,
const char *prompt )
printf( ">+> %s\n", resp );
return socket_write( &ctx->conn, resp, l, GiveOwn );
}
-#endif
+#endif /* HAVE_LIBSSL */
+static void imap_open_store_connected( int, void * );
+static void imap_open_store_tlsstarted1( int, void * );
static void imap_open_store_p2( imap_store_t *, struct imap_cmd *, int );
static void imap_open_store_authenticate( imap_store_t * );
static void imap_open_store_authenticate_p2( imap_store_t *, struct imap_cmd
*, int );
+static void imap_open_store_tlsstarted2( int, void * );
static void imap_open_store_authenticate_p3( imap_store_t *, struct imap_cmd
*, int );
static void imap_open_store_authenticate2( imap_store_t * );
static void imap_open_store_authenticate2_p2( imap_store_t *, struct imap_cmd
*, int );
@@ -1043,28 +1125,46 @@ imap_open_store( store_conf_t *conf,
ctx = nfcalloc( sizeof(*ctx) );
ctx->ref_count = 1;
ctx->gen.conf = conf;
- ctx->conn.fd = -1;
ctx->callbacks.imap_open = cb;
ctx->callback_aux = aux;
set_bad_callback( &ctx->gen, (void (*)(void *))imap_open_store_bail,
ctx );
ctx->in_progress_append = &ctx->in_progress;
+ ctx->pending_append = &ctx->pending;
- if (!socket_connect( &srvc->sconf, &ctx->conn ))
- goto bail;
+ socket_init( &ctx->conn, &srvc->sconf, imap_socket_fail,
imap_socket_read, ctx );
+ socket_connect( &ctx->conn, imap_open_store_connected );
+}
+static void
+imap_open_store_connected( int ok, void *aux )
+{
+ imap_store_t *ctx = (imap_store_t *)aux;
#if HAVE_LIBSSL
- if (srvc->sconf.use_imaps) {
- if (socket_start_tls( &srvc->sconf, &ctx->conn )) {
- imap_open_store_ssl_bail( ctx );
- return;
- }
+ imap_store_conf_t *cfg = (imap_store_conf_t *)ctx->gen.conf;
+ imap_server_conf_t *srvc = cfg->server;
+#endif
+
+ if (!ok) {
+ imap_open_store_bail( ctx );
+ return;
}
+
+#if HAVE_LIBSSL
+ if (srvc->sconf.use_imaps)
+ socket_start_tls( &ctx->conn, imap_open_store_tlsstarted1 );
#endif
- return;
+}
- bail:
- imap_open_store_bail( ctx );
+#if HAVE_LIBSSL
+static void
+imap_open_store_tlsstarted1( int ok, void *aux )
+{
+ imap_store_t *ctx = (imap_store_t *)aux;
+
+ if (!ok)
+ imap_open_store_ssl_bail( ctx );
}
+#endif
static void
imap_open_store_greeted( imap_store_t *ctx )
@@ -1127,7 +1227,16 @@ imap_open_store_authenticate_p2( imap_store_t *ctx,
struct imap_cmd *cmd ATTR_UN
{
if (response != RESP_OK)
imap_open_store_bail( ctx );
- else if (socket_start_tls( &((imap_server_conf_t
*)ctx->gen.conf)->sconf, &ctx->conn ))
+ else
+ socket_start_tls( &ctx->conn, imap_open_store_tlsstarted2 );
+}
+
+static void
+imap_open_store_tlsstarted2( int ok, void *aux )
+{
+ imap_store_t *ctx = (imap_store_t *)aux;
+
+ if (!ok)
imap_open_store_ssl_bail( ctx );
else
imap_exec( ctx, 0, imap_open_store_authenticate_p3,
"CAPABILITY" );
@@ -1257,7 +1366,7 @@ static void
imap_open_store_finalize( imap_store_t *ctx )
{
set_bad_callback( &ctx->gen, 0, 0 );
- ctx->trashnc = 1;
+ ctx->trashnc = TrashUnknown;
ctx->callbacks.imap_open( &ctx->gen, ctx->callback_aux );
}
@@ -1305,8 +1414,7 @@ struct imap_cmd_select {
};
static void imap_select_p2( imap_store_t *, struct imap_cmd *, int );
-static void imap_submit_select2( imap_store_t *, const char *, struct
imap_cmd_refcounted_state *,
- struct imap_cmd_refcounted ** );
+static int imap_submit_select2( imap_store_t *, const char *, struct
imap_cmd_refcounted_state * );
static void imap_select2_p2( imap_store_t *, struct imap_cmd *, int );
static void
@@ -1348,13 +1456,11 @@ imap_select_p2( imap_store_t *ctx, struct imap_cmd
*cmd, int response )
free( cmdp->excs );
cmdp->gen.callback( response, cmdp->gen.callback_aux );
} else {
- struct imap_cmd_refcounted *cmd2 = 0;
struct imap_cmd_refcounted_state *sts = nfmalloc( sizeof(*sts)
);
sts->callback = cmdp->gen.callback;
sts->callback_aux = cmdp->gen.callback_aux;
sts->ref_count = 1; /* so forced sync does not cause an early
exit */
sts->ret_val = DRV_OK;
- ctx->ref_count++;
ctx->msgapp = &ctx->gen.msgs;
sort_ints( cmdp->excs, cmdp->nexcs );
@@ -1368,9 +1474,7 @@ imap_select_p2( imap_store_t *ctx, struct imap_cmd *cmd,
int response )
if (i != j)
bl += sprintf( buf + bl, ":%d",
cmdp->excs[i] );
}
- imap_submit_select2( ctx, buf, sts, &cmd2 );
- if (ctx->store_canceled) {
- deref_store( ctx );
+ if (imap_submit_select2( ctx, buf, sts ) < 0) {
free( cmdp->excs );
return;
}
@@ -1379,35 +1483,27 @@ imap_select_p2( imap_store_t *ctx, struct imap_cmd
*cmd, int response )
cmdp->maxuid = ctx->uidnext >= 0 ? ctx->uidnext - 1 :
1000000000;
if (cmdp->maxuid >= cmdp->minuid) {
sprintf( buf, "%d:%d", cmdp->minuid, cmdp->maxuid );
- imap_submit_select2( ctx, buf, sts, &cmd2 );
- if (ctx->store_canceled) {
- deref_store( ctx );
+ if (imap_submit_select2( ctx, buf, sts ) < 0) {
free( cmdp->excs );
return;
}
}
- deref_store( ctx );
free( cmdp->excs );
if (!--sts->ref_count)
imap_refcounted_done( sts );
- else
- get_cmd_result( ctx, &cmd2->gen );
}
}
-static void
-imap_submit_select2( imap_store_t *ctx, const char *buf, struct
imap_cmd_refcounted_state *sts,
- struct imap_cmd_refcounted **cmdp )
+static int
+imap_submit_select2( imap_store_t *ctx, const char *buf, struct
imap_cmd_refcounted_state *sts )
{
struct imap_cmd_refcounted *cmd = (struct imap_cmd_refcounted
*)new_imap_cmd( sizeof(*cmd) );
- cmd->gen.param.done = imap_select2_p2;
cmd->state = sts;
sts->ref_count++;
- *cmdp = cmd;
- submit_imap_cmd( ctx, &cmd->gen,
- "UID FETCH %s (UID%s%s)", buf,
- (ctx->gen.opts & OPEN_FLAGS) ? " FLAGS" : "",
- (ctx->gen.opts & OPEN_SIZE) ? " RFC822.SIZE" : "" );
+ return imap_exec( ctx, &cmd->gen, imap_select2_p2,
+ "UID FETCH %s (UID%s%s)", buf,
+ (ctx->gen.opts & OPEN_FLAGS) ? " FLAGS" : "",
+ (ctx->gen.opts & OPEN_SIZE) ? " RFC822.SIZE" : "" );
}
static void
@@ -1473,12 +1569,11 @@ imap_flags_helper( imap_store_t *ctx, int uid, char
what, int flags,
char buf[256];
struct imap_cmd_refcounted *cmd = (struct imap_cmd_refcounted
*)new_imap_cmd( sizeof(*cmd) );
- cmd->gen.param.done = imap_set_flags_p2;
cmd->state = sts;
sts->ref_count++;
buf[imap_make_flags( flags, buf )] = 0;
- submit_imap_cmd( ctx, &cmd->gen, "UID STORE %d %cFLAGS.SILENT %s", uid,
what, buf );
- return ctx->store_canceled;
+ return imap_exec( ctx, &cmd->gen, imap_set_flags_p2,
+ "UID STORE %d %cFLAGS.SILENT %s", uid, what, buf );
}
static void
@@ -1501,20 +1596,15 @@ imap_set_flags( store_t *gctx, message_t *msg, int uid,
int add, int del,
sts->callback_aux = aux;
sts->ref_count = 1; /* so forced sync does not cause an early
exit */
sts->ret_val = DRV_OK;
- ctx->ref_count++;
- if ((add && imap_flags_helper( ctx, uid, '+', add, sts )) ||
- (del && imap_flags_helper( ctx, uid, '-', del, sts )))
+ if ((add && imap_flags_helper( ctx, uid, '+', add, sts ) < 0) ||
+ (del && imap_flags_helper( ctx, uid, '-', del, sts ) < 0))
{
- deref_store( ctx );
if (!--sts->ref_count)
free( sts );
return;
}
if (!--sts->ref_count)
imap_refcounted_done( sts );
- else
- process_imap_replies( ctx );
- deref_store( ctx );
} else {
cb( DRV_OK, aux );
}
@@ -1684,8 +1774,17 @@ static void
imap_cancel( store_t *gctx,
void (*cb)( void *aux ), void *aux )
{
- (void)gctx;
- cb( aux );
+ imap_store_t *ctx = (imap_store_t *)gctx;
+
+ socket_cancel_delimited( &ctx->conn );
+ cancel_pending_imap_cmds( ctx );
+ if (ctx->in_progress) {
+ ctx->canceling = 1;
+ ctx->callbacks.imap_cancel = cb;
+ ctx->callback_aux = aux;
+ } else {
+ cb( aux );
+ }
}
/******************* imap_commit *******************/
@@ -1732,7 +1831,7 @@ imap_parse_store( conffile_t *cfg, store_conf_t **storep,
int *err )
server->require_ssl = 1;
server->sconf.use_tlsv1 = 1;
#endif
- server->max_in_progress = 50;
+ server->max_in_progress = INT_MAX;
while (getcline( cfg ) && cfg->cmd) {
if (!strcasecmp( "Host", cfg->cmd )) {
@@ -1761,7 +1860,7 @@ imap_parse_store( conffile_t *cfg, store_conf_t **storep,
int *err )
server->sconf.port = parse_int( cfg );
else if (!strcasecmp( "PipelineDepth", cfg->cmd )) {
if ((server->max_in_progress = parse_int( cfg )) < 1) {
- error( "%s:%d: PipelineDepth must be at least
1\n" );
+ error( "%s:%d: PipelineDepth must be at least
1\n", cfg->file, cfg->line );
*err = 1;
}
}
diff --git a/src/isync.h b/src/isync.h
index dd55945..b821721 100644
--- a/src/isync.h
+++ b/src/isync.h
@@ -73,16 +73,37 @@ typedef struct server_conf {
#endif
} server_conf_t;
+typedef struct buff_chunk {
+ struct buff_chunk *next;
+ char *data;
+ int len;
+ char buf[1];
+} buff_chunk_t;
+
typedef struct {
+ /* connection */
int fd;
+ int state;
+ const server_conf_t *conf; /* needed during connect */
#if HAVE_LIBSSL
SSL *ssl;
- unsigned int use_ssl:1;
+ unsigned use_ssl:1;
#endif
- int bytes;
- int offset;
- char buf[1024];
+ void (*bad_callback)( void *aux ); /* async fail while sending or
listening */
+ void (*read_callback)( void *aux ); /* data available for reading */
+ void (*action_callback)( int ok, void *aux ); /* connect or starttls */
+ void *callback_aux;
+
+ /* writing */
+ buff_chunk_t *write_buf, **write_buf_append; /* buffer head & tail */
+ int write_offset; /* offset into buffer head */
+
+ /* reading */
+ int offset; /* start of filled bytes in buffer */
+ int bytes; /* number of filled bytes in buffer */
+ int scanoff; /* offset to continue scanning for newline at, relative to
'offset' */
+ char buf[100000];
} conn_t;
typedef struct {
@@ -327,15 +348,28 @@ extern const char *Home;
/* socket.c */
-int socket_connect( const server_conf_t *conf, conn_t *sock );
-int socket_start_tls( const server_conf_t *conf, conn_t *sock );
+/* call this before doing anything with the socket */
+static INLINE void socket_init( conn_t *conn,
+ const server_conf_t *conf,
+ void (*bad_callback)( void *aux ),
+ void (*read_callback)( void *aux ),
+ void *aux )
+{
+ conn->conf = conf;
+ conn->bad_callback = bad_callback;
+ conn->read_callback = read_callback;
+ conn->callback_aux = aux;
+ conn->fd = -1;
+}
+void socket_connect( conn_t *conn, void (*cb)( int ok, void *aux ) );
+void socket_start_tls( conn_t *conn, void (*cb)( int ok, void *aux ) );
void socket_close( conn_t *sock );
-int socket_read( conn_t *sock, char *buf, int len );
+int socket_read( conn_t *sock, char *buf, int len ); /* never waits */
+char *socket_read_line( conn_t *sock ); /* don't free return value; never
waits */
typedef enum { KeepOwn = 0, GiveOwn } ownership_t;
int socket_write( conn_t *sock, char *buf, int len, ownership_t takeOwn );
-int socket_pending( conn_t *sock );
-
-int buffer_gets( conn_t *b, char **s );
+void socket_delimit( conn_t *conn );
+void socket_cancel_delimited( conn_t *conn );
void cram( const char *challenge, const char *user, const char *pass,
char **_final, int *_finallen );
diff --git a/src/mbsync.1 b/src/mbsync.1
index 4f47668..e8cbabb 100644
--- a/src/mbsync.1
+++ b/src/mbsync.1
@@ -281,10 +281,8 @@ Use TLSv1 for communication with the IMAP server over SSL?
\fBPipelineDepth\fR \fIdepth\fR
Maximum number of IMAP commands which can be simultaneously in flight.
Setting this to \fI1\fR disables pipelining.
-Setting it to a too big value may deadlock isync.
-Currently, this affects only a few commands.
This is mostly a debugging only option.
-(Default: \fI50\fR)
+(Default: \fIunlimited\fR)
..
.SS IMAP Stores
The reference point for relative \fBPath\fRs is whatever the server likes it
diff --git a/src/socket.c b/src/socket.c
index 4bb33c5..1351f03 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -36,52 +36,79 @@
#include <assert.h>
#include <unistd.h>
#include <stdlib.h>
+#include <stddef.h>
#include <errno.h>
#include <string.h>
+#include <fcntl.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>
+enum {
+ SCK_CONNECTING,
#if HAVE_LIBSSL
-/* Some of this code is inspired by / lifted from mutt. */
+ SCK_STARTTLS,
+#endif
+ SCK_READY
+};
static void
-socket_perror( const char *func, conn_t *sock, int ret )
+socket_fail( conn_t *conn )
{
#if HAVE_LIBSSL
- 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)
- error( "SSL_%s: got EOF\n", func );
- else
- error( "SSL_%s: %s\n", func,
strerror(errno) );
- } else
- error( "SSL_%s: %s\n", func, ERR_error_string(
err, 0 ) );
- return;
- default:
- error( "SSL_%s: unhandled SSL error %d\n", func, err );
- break;
- }
- return;
- }
-#else
- (void)sock;
+ if (conn->state == SCK_STARTTLS)
+ conn->action_callback( 0, conn->callback_aux );
+ else
#endif
+ conn->bad_callback( conn->callback_aux );
+}
+
+static void
+socket_perror( const char *func, conn_t *conn, int ret )
+{
if (ret < 0)
perror( func );
else
error( "%s: unexpected EOF\n", func );
+ socket_fail( conn );
+}
+
+#if HAVE_LIBSSL
+/* Some of this code is inspired by / lifted from mutt. */
+
+static int
+ssl_return( const char *func, conn_t *conn, int ret )
+{
+ int err;
+
+ switch ((err = SSL_get_error( conn->ssl, ret ))) {
+ case SSL_ERROR_NONE:
+ return 1;
+ case SSL_ERROR_WANT_WRITE:
+ conf_fd( conn->fd, POLLIN, POLLOUT );
+ /* fallthrough */
+ case SSL_ERROR_WANT_READ:
+ return 0;
+ case SSL_ERROR_SYSCALL:
+ case SSL_ERROR_SSL:
+ if (!(err = ERR_get_error())) {
+ if (ret == 0)
+ error( "SSL_%s: unexpected EOF\n", func );
+ else
+ error( "SSL_%s: %s\n", func, strerror( errno )
);
+ } else {
+ error( "SSL_%s: %s\n", func, ERR_error_string( err, 0 )
);
+ }
+ break;
+ default:
+ error( "SSL_%s: unhandled SSL error %d\n", func, err );
+ break;
+ }
+ socket_fail( conn );
+ return -1;
}
static int
@@ -241,46 +268,79 @@ init_ssl_ctx( const server_conf_t *conf )
return 0;
}
-int
-socket_start_tls( const server_conf_t *conf, conn_t *sock )
+static void start_tls_p2( conn_t * );
+static void start_tls_p3( conn_t *, int );
+
+void
+socket_start_tls( conn_t *conn, void (*cb)( int ok, void *aux ) )
{
- int ret;
static int ssl_inited;
+ conn->action_callback = cb;
+
if (!ssl_inited) {
SSL_library_init();
SSL_load_error_strings();
ssl_inited = 1;
}
- if (!conf->SSLContext && init_ssl_ctx( conf ))
- return 1;
-
- sock->ssl = SSL_new( ((server_conf_t *)conf)->SSLContext );
- SSL_set_fd( sock->ssl, sock->fd );
- if ((ret = SSL_connect( sock->ssl )) <= 0) {
- socket_perror( "connect", sock, ret );
- return 1;
+ if (!conn->conf->SSLContext && init_ssl_ctx( conn->conf )) {
+ start_tls_p3( conn, 0 );
+ return;
}
- /* verify the server certificate */
- if (verify_cert( conf, sock ))
- return 1;
+ conn->ssl = SSL_new( ((server_conf_t *)conn->conf)->SSLContext );
+ SSL_set_fd( conn->ssl, conn->fd );
+ SSL_set_mode( conn->ssl, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER );
+ start_tls_p2( conn );
+}
- sock->use_ssl = 1;
- info( "Connection is now encrypted\n" );
- return 0;
+static void
+start_tls_p2( conn_t *conn )
+{
+ switch (ssl_return( "connect", conn, SSL_connect( conn->ssl ) )) {
+ case 0:
+ break;
+ case 1:
+ /* verify the server certificate */
+ if (verify_cert( conn->conf, conn )) {
+ start_tls_p3( conn, 0 );
+ } else {
+ info( "Connection is now encrypted\n" );
+ conn->use_ssl = 1;
+ start_tls_p3( conn, 1 );
+ }
+ break;
+ default:
+ start_tls_p3( conn, 0 );
+ break;
+ }
+}
+
+static void
+start_tls_p3( conn_t *conn, int ok )
+{
+ conn->state = SCK_READY;
+ conn->action_callback( ok, conn->callback_aux );
}
#endif /* HAVE_LIBSSL */
-int
-socket_connect( const server_conf_t *conf, conn_t *sock )
+static void socket_fd_cb( int, void * );
+
+static void socket_connected2( conn_t * );
+static void socket_connect_bail( conn_t * );
+
+void
+socket_connect( conn_t *sock, void (*cb)( int ok, void *aux ) )
{
+ const server_conf_t *conf = sock->conf;
struct hostent *he;
struct sockaddr_in addr;
int s, a[2];
+ sock->action_callback = cb;
+
/* open connection to IMAP server */
if (conf->tunnel) {
infon( "Starting tunnel '%s'... ", conf->tunnel );
@@ -301,6 +361,10 @@ socket_connect( const server_conf_t *conf, conn_t *sock )
close( a[0] );
sock->fd = a[1];
+
+ fcntl( a[1], F_SETFD, O_NONBLOCK );
+ add_fd( a[1], socket_fd_cb, sock );
+
} else {
memset( &addr, 0, sizeof(addr) );
addr.sin_port = conf->port ? htons( conf->port ) :
@@ -314,7 +378,7 @@ socket_connect( const server_conf_t *conf, conn_t *sock )
he = gethostbyname( conf->host );
if (!he) {
error( "IMAP error: Cannot resolve server '%s'\n",
conf->host );
- return -1;
+ goto bail;
}
info( "ok\n" );
@@ -325,24 +389,78 @@ socket_connect( const server_conf_t *conf, conn_t *sock )
perror( "socket" );
exit( 1 );
}
+ sock->fd = s;
+ fcntl( s, F_SETFD, O_NONBLOCK );
+ add_fd( s, socket_fd_cb, sock );
- infon( "Connecting to %s:%hu... ", inet_ntoa( addr.sin_addr ),
ntohs( addr.sin_port ) );
+ infon( "Connecting to %s (%s:%hu) ... ",
+ conf->host, inet_ntoa( addr.sin_addr ), ntohs(
addr.sin_port ) );
if (connect( s, (struct sockaddr *)&addr, sizeof(addr) )) {
- close( s );
- perror( "connect" );
- return -1;
+ if (errno != EINPROGRESS) {
+ perror( "connect" );
+ del_fd( s );
+ close( s );
+ goto bail;
+ }
+ conf_fd( s, 0, POLLOUT );
+ sock->state = SCK_CONNECTING;
+ info( "\n" );
+ return;
}
- sock->fd = s;
}
info( "ok\n" );
- return 0;
+ socket_connected2( sock );
+ return;
+
+ bail:
+ socket_connect_bail( sock );
+}
+
+static void
+socket_connected( conn_t *conn )
+{
+ int soerr;
+ socklen_t selen;
+
+ infon( "Connecting to %s: ", conn->conf->host );
+ if (getsockopt( conn->fd, SOL_SOCKET, SO_ERROR, &soerr, &selen )) {
+ perror( "getsockopt" );
+ exit( 1 );
+ }
+ if (soerr) {
+ errno = soerr;
+ perror( "connect" );
+ del_fd( conn->fd );
+ close( conn->fd );
+ socket_connect_bail( conn );
+ return;
+ }
+ info( "ok\n" );
+ socket_connected2( conn );
}
+static void
+socket_connected2( conn_t *conn )
+{
+ conf_fd( conn->fd, 0, POLLIN );
+ conn->state = SCK_READY;
+ conn->action_callback( 1, conn->callback_aux );
+}
+
+static void
+socket_connect_bail( conn_t *conn )
+{
+ conn->action_callback( 0, conn->callback_aux );
+}
+
+static void dispose_chunks( conn_t *conn, buff_chunk_t **bcp );
+
void
socket_close( conn_t *sock )
{
if (sock->fd >= 0) {
+ del_fd( sock->fd );
close( sock->fd );
sock->fd = -1;
}
@@ -355,114 +473,241 @@ socket_close( conn_t *sock )
sock->ssl = 0;
}
#endif
+ dispose_chunks( sock, &sock->write_buf );
}
-int
-socket_read( conn_t *sock, char *buf, int len )
+static int
+do_write( conn_t *conn, char *buf, int len )
{
int n;
- assert( sock->fd >= 0 );
- n =
+ assert( conn->fd >= 0 );
#if HAVE_LIBSSL
- sock->use_ssl ? SSL_read( sock->ssl, buf, len ) :
+ if (conn->use_ssl) {
+ switch (ssl_return( "write", conn, SSL_write( conn->ssl, buf,
len ) )) {
+ default:
+ return -1;
+ case 1:
+ return len;
+ case 0:
+ return 0;
+ }
+ }
#endif
- read( sock->fd, buf, len );
- if (n <= 0) {
- socket_perror( "read", sock, n );
- close( sock->fd );
- sock->fd = -1;
+ n = write( conn->fd, buf, len );
+ if (n < 0) {
+ if (errno == EAGAIN) {
+ conf_fd( conn->fd, POLLIN, POLLOUT );
+ return 0;
+ }
+ perror( "write" );
+ socket_fail( conn );
+ return -1;
}
return n;
}
-int
-socket_write( conn_t *sock, char *buf, int len, ownership_t takeOwn )
+static void
+dispose_chunk( conn_t *conn, buff_chunk_t **bcp )
{
- int n;
+ buff_chunk_t *bc = *bcp;
+ if (!(*bcp = bc->next))
+ conn->write_buf_append = bcp;
+ if (bc->data != bc->buf)
+ free( bc->data );
+ free( bc );
+}
- assert( sock->fd >= 0 );
- n =
-#if HAVE_LIBSSL
- sock->use_ssl ? SSL_write( sock->ssl, buf, len ) :
-#endif
- write( sock->fd, buf, len );
- if (takeOwn == GiveOwn)
- free( buf );
- if (n != len) {
- socket_perror( "write", sock, n );
- close( sock->fd );
- sock->fd = -1;
- return -1;
+static void
+dispose_chunks( conn_t *conn, buff_chunk_t **bcp )
+{
+ while (*bcp)
+ dispose_chunk( conn, bcp );
+}
+
+static int
+do_queued_write( conn_t *conn )
+{
+ buff_chunk_t *bc;
+ while ((bc = conn->write_buf)) {
+ int n, len = bc->len;
+ if (!len) {
+ dispose_chunk( conn, &conn->write_buf );
+ } else {
+ len -= conn->write_offset;
+ if ((n = do_write( conn, bc->data + conn->write_offset,
len )) < 0)
+ return -1;
+ if (n == len) {
+ conn->write_offset = 0;
+ dispose_chunk( conn, &conn->write_buf );
+ } else {
+ conn->write_offset += n;
+ }
+ }
}
return 0;
}
-int
-socket_pending( conn_t *sock )
+static void
+do_append( conn_t *conn, char *buf, int len, ownership_t takeOwn )
{
- int num = -1;
+ buff_chunk_t *bc;
- if (ioctl( sock->fd, FIONREAD, &num ) < 0)
- return -1;
- if (num > 0)
- return num;
-#if HAVE_LIBSSL
- if (sock->use_ssl)
- return SSL_pending( sock->ssl );
-#endif
- return 0;
+ if (takeOwn == GiveOwn) {
+ bc = nfmalloc( offsetof(buff_chunk_t, buf) );
+ bc->data = buf;
+ } else {
+ bc = nfmalloc( offsetof(buff_chunk_t, buf) + len );
+ bc->data = bc->buf;
+ memcpy( bc->data, buf, len );
+ }
+ bc->len = len;
+ *conn->write_buf_append = bc;
+ conn->write_buf_append = &bc->next;
}
-/* simple line buffering */
int
-buffer_gets( conn_t *b, char **s )
+socket_write( conn_t *conn, char *buf, int len, ownership_t takeOwn )
{
- int n;
- int start = b->offset;
-
- *s = b->buf + start;
+ if (conn->write_buf) {
+ do_append( conn, buf, len, takeOwn );
+ return len;
+ } else {
+ int n = do_write( conn, buf, len );
+ if (n != len && n > 0) {
+ conn->write_offset = n;
+ do_append( conn, buf, len, takeOwn );
+ } else if (takeOwn) {
+ free( buf );
+ }
+ return n;
+ }
+}
- 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;
+void
+socket_delimit( conn_t *conn )
+{
+ if (conn->write_buf)
+ do_append( conn, 0, 0, GiveOwn );
+}
- assert( start <= b->bytes );
- n = b->bytes - start;
+void
+socket_cancel_delimited( conn_t *conn )
+{
+ buff_chunk_t **bcp;
- if (n)
- memmove( b->buf, b->buf + start, n );
- b->offset -= start;
- b->bytes = n;
- start = 0;
- }
+ for (bcp = &conn->write_buf; *bcp && (*bcp)->data; bcp = &(*bcp)->next)
;
+ dispose_chunks( conn, bcp );
+}
- n = socket_read( b, b->buf + b->bytes,
- sizeof(b->buf) - b->bytes );
+int
+socket_read( conn_t *conn, char *buf, int len )
+{
+ int n = conn->bytes;
+ if (n > len)
+ n = len;
+ memcpy( buf, conn->buf + conn->offset, n );
+ conn->offset += n;
+ conn->bytes -= n;
+ return n;
+}
- if (n <= 0)
- return -1;
+char *
+socket_read_line( conn_t *b )
+{
+ char *p, *s;
+ int n;
- b->bytes += n;
+ s = b->buf + b->offset;
+ p = memchr( s + b->scanoff, '\n', b->bytes - b->scanoff );
+ if (!p) {
+ b->scanoff = b->bytes;
+ if (b->offset + b->bytes == sizeof(b->buf)) {
+ memmove( b->buf, b->buf + b->offset, b->bytes );
+ b->offset = 0;
}
+ return 0;
+ }
+ n = p + 1 - s;
+ b->offset += n;
+ b->bytes -= n;
+ b->scanoff = 0;
+ if (p != s && p[-1] == '\r')
+ p--;
+ *p = 0;
+ if (DFlags & VERBOSE)
+ puts( s );
+ return s;
+}
- 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 (DFlags & VERBOSE)
- puts( *s );
- return 0;
- }
+static int
+do_read( conn_t *conn, char *buf, int len )
+{
+ int n;
+
+ assert( conn->fd >= 0 );
+#if HAVE_LIBSSL
+ if (conn->use_ssl) {
+ n = SSL_read( conn->ssl, buf, len );
+ switch (ssl_return( "read", conn, n )) {
+ case 1:
+ break;
+ default: /* error (already called back) */
+ case 0: /* want something */
+ return 0;
}
+ } else
+#endif
+ n = read( conn->fd, buf, len );
+ if (n <= 0)
+ socket_perror( "read", conn, n );
+ return n;
+}
+
+static void
+buffered_read( conn_t *conn )
+{
+ int n = conn->offset + conn->bytes;
+ n = do_read( conn, conn->buf + n, sizeof(conn->buf) - n );
+ if (n > 0) {
+ conn->bytes += n;
+ conn->read_callback( conn->callback_aux );
+ }
+}
+
+static void
+socket_fd_cb( int events, void *aux )
+{
+ conn_t *conn = (conn_t *)aux;
- b->offset++;
+ if (conn->state == SCK_CONNECTING) {
+ socket_connected( conn );
+ return;
+ }
+
+#if HAVE_LIBSSL
+ if (conn->state == SCK_STARTTLS) {
+ start_tls_p2( conn );
+ return;
+ }
+ if (conn->use_ssl) {
+ conf_fd( conn->fd, POLLIN, 0 );
+ if (conn->write_buf)
+ if (do_queued_write( conn ) < 0)
+ return;
+ buffered_read( conn );
+ return;
+ }
+#endif
+
+ if (events & POLLOUT) {
+ if (do_queued_write( conn ) < 0)
+ return;
+ if (conn->fd >= 0 && !conn->write_buf)
+ conf_fd( conn->fd, POLLIN, 0 );
}
- /* not reached */
+ if (events & POLLIN)
+ buffered_read( conn );
}
#if HAVE_LIBSSL
------------------------------------------------------------------------------
Colocation vs. Managed Hosting
A question and answer guide to determining the best fit
for your organization - today and in the future.
http://p.sf.net/sfu/internap-sfd2d
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