tFix file transfers + texting to use O_RDONLY for FIFOs - ratox - FIFO based tox client
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---
(DIR) commit 3977b2a296d645117de9fba1409a1d071cc55337
(DIR) parent dd4665bfbd4d5255d3671a7a41afb5afdf179576
(HTM) Author: sin <sin@2f30.org>
Date: Fri, 19 Sep 2014 10:09:32 +0100
Fix file transfers + texting to use O_RDONLY for FIFOs
Just re-open them to clear EOF.
Diffstat:
M ratox.c | 78 +++++++++++++++++--------------
1 file changed, 42 insertions(+), 36 deletions(-)
---
(DIR) diff --git a/ratox.c b/ratox.c
t@@ -93,8 +93,8 @@ enum {
};
static struct file ffiles[] = {
- { .type = FIFO, .name = "text_in", .flags = O_RDWR | O_NONBLOCK, },
- { .type = FIFO, .name = "file_in", .flags = O_RDWR | O_NONBLOCK, },
+ { .type = FIFO, .name = "text_in", .flags = O_RDONLY | O_NONBLOCK, },
+ { .type = FIFO, .name = "file_in", .flags = O_RDONLY | O_NONBLOCK, },
{ .type = STATIC, .name = "online", .flags = O_WRONLY | O_TRUNC | O_CREAT },
{ .type = STATIC, .name = "name", .flags = O_WRONLY | O_TRUNC | O_CREAT },
{ .type = STATIC, .name = "status", .flags = O_WRONLY | O_TRUNC | O_CREAT },
t@@ -115,7 +115,6 @@ struct transfer {
ssize_t n;
int pending;
int state;
- time_t lastsent;
};
struct friend {
t@@ -125,6 +124,7 @@ struct friend {
uint8_t id[TOX_CLIENT_ID_SIZE];
/* null terminated id */
char idstr[2 * TOX_CLIENT_ID_SIZE + 1];
+ int dirfd;
int fd[NR_FFILES];
struct transfer t;
TAILQ_ENTRY(friend) entry;
t@@ -155,7 +155,6 @@ static void cbnamechange(Tox *, int32_t, const uint8_t *, uint16_t, void *);
static void cbstatusmessage(Tox *, int32_t, const uint8_t *, uint16_t, void *);
static void cbuserstatus(Tox *, int32_t, uint8_t, void *);
static void cbfilecontrol(Tox *, int32_t, uint8_t, uint8_t, uint8_t, const uint8_t *, uint16_t, void *);
-static void completefile(struct friend *);
static void sendfriendfile(struct friend *);
static void dataload(void);
static void datasave(void);
t@@ -378,7 +377,6 @@ cbfilecontrol(Tox *m, int32_t fid, uint8_t rec_sen, uint8_t fnum, uint8_t ctrlty
f->t.n = 0;
f->t.pending = 0;
f->t.state = TRANSFER_INPROGRESS;
- f->t.lastsent = time(NULL);
break;
}
}
t@@ -400,16 +398,10 @@ cbfilecontrol(Tox *m, int32_t fid, uint8_t rec_sen, uint8_t fnum, uint8_t ctrlty
}
static void
-completefile(struct friend *f)
-{
- tox_file_send_control(tox, f->fid, 0, f->t.fnum,
- TOX_FILECONTROL_FINISHED, NULL, 0);
-}
-
-static void
sendfriendfile(struct friend *f)
{
ssize_t n;
+ int r;
while (1) {
/* attempt to transmit the pending buffer */
t@@ -418,11 +410,23 @@ sendfriendfile(struct friend *f)
/* bad luck - we will try again later */
break;
}
- f->t.lastsent = time(NULL);
f->t.pending = 0;
}
/* grab another buffer from the FIFO */
n = read(f->fd[FFILE_IN], f->t.buf, f->t.chunksz);
+ if (n == 0) {
+ close(f->fd[FFILE_IN]);
+ r = openat(f->dirfd, ffiles[FFILE_IN].name, ffiles[FFILE_IN].flags, 0644);
+ if (r < 0) {
+ perror("open");
+ exit(EXIT_FAILURE);
+ }
+ f->fd[FFILE_IN] = r;
+ /* signal transfer completion to other end */
+ tox_file_send_control(tox, f->fid, 0, f->t.fnum,
+ TOX_FILECONTROL_FINISHED, NULL, 0);
+ break;
+ }
if (n < 0) {
if (errno == EINTR)
continue;
t@@ -439,7 +443,6 @@ sendfriendfile(struct friend *f)
f->t.pending = 1;
return;
}
- f->t.lastsent = time(NULL);
}
}
t@@ -448,9 +451,20 @@ sendfriendtext(struct friend *f)
{
uint8_t buf[TOX_MAX_MESSAGE_LENGTH];
ssize_t n;
+ int r;
again:
n = read(f->fd[FTEXT_IN], buf, sizeof(buf));
+ if (n == 0) {
+ close(f->fd[FTEXT_IN]);
+ r = openat(f->dirfd, ffiles[FTEXT_IN].name, ffiles[FTEXT_IN].flags, 0644);
+ if (r < 0) {
+ perror("open");
+ exit(EXIT_FAILURE);
+ }
+ f->fd[FTEXT_IN] = r;
+ return ;
+ }
if (n < 0) {
if (errno == EINTR)
goto again;
t@@ -690,6 +704,7 @@ friendcreate(int32_t fid)
struct friend *f;
uint8_t status[TOX_MAX_STATUSMESSAGE_LENGTH + 1];
size_t i;
+ DIR *d;
int r;
f = calloc(1, sizeof(*f));
t@@ -715,25 +730,32 @@ friendcreate(int32_t fid)
exit(EXIT_FAILURE);
}
- r = chdir(f->idstr);
+ d = opendir(f->idstr);
+ if (!d) {
+ perror("opendir");
+ exit(EXIT_FAILURE);
+ }
+ r = dirfd(d);
if (r < 0) {
- perror("chdir");
+ perror("dirfd");
exit(EXIT_FAILURE);
}
+ f->dirfd = r;
+
for (i = 0; i < LEN(ffiles); i++) {
if (ffiles[i].type == FIFO) {
- r = mkfifo(ffiles[i].name, 0644);
+ r = mkfifoat(f->dirfd, ffiles[i].name, 0644);
if (r < 0 && errno != EEXIST) {
perror("mkfifo");
exit(EXIT_FAILURE);
}
- r = open(ffiles[i].name, ffiles[i].flags, 0644);
+ r = openat(f->dirfd, ffiles[i].name, ffiles[i].flags, 0644);
if (r < 0) {
perror("open");
exit(EXIT_FAILURE);
}
} else if (ffiles[i].type == STATIC) {
- r = open(ffiles[i].name, ffiles[i].flags, 0644);
+ r = openat(f->dirfd, ffiles[i].name, ffiles[i].flags, 0644);
if (r < 0) {
perror("open");
exit(EXIT_FAILURE);
t@@ -741,7 +763,6 @@ friendcreate(int32_t fid)
}
f->fd[i] = r;
}
- chdir("..");
ftruncate(f->fd[FNAME], 0);
dprintf(f->fd[FNAME], "%s\n", f->namestr);
t@@ -1042,22 +1063,7 @@ loop(void)
TAILQ_FOREACH(f, &friendhead, entry) {
if (tox_get_friend_connection_status(tox, f->fid) == 0)
continue;
- switch (f->t.state) {
- case TRANSFER_NONE:
- case TRANSFER_INITIATED:
- break;
- case TRANSFER_INPROGRESS:
- /* We use a 1 second grace period, if no reads
- * happen during that period we consider the transfer
- * to have completed and signal the end of transmission
- * control packet. If we knew the size of the file
- * it would have been easier to do this but since we are
- * reading from a FIFO this is not really a possibility.
- */
- if (now > f->t.lastsent + 1)
- completefile(f);
- break;
- case TRANSFER_DONE:
+ if (f->t.state == TRANSFER_DONE) {
printout("Transfer complete\n");
f->t.state = TRANSFER_NONE;
free(f->t.buf);