#define fcntlsocket fcntl
#endif
-#define TIMEOUT 5
+#define TIMEOUT 15
+
+static void free_dir(struct ftp_dirent *dir);
static int newconn(struct ftp *ftp);
static int sendcmd(struct ftp *ftp, const char *fmt, ...);
static void proc_control(struct ftp *ftp, const char *buf);
static int cproc_active(struct ftp *ftp, int code, const char *buf, void *cls);
+static int cproc_pasv(struct ftp *ftp, int code, const char *buf, void *cls);
static int cproc_pwd(struct ftp *ftp, int code, const char *buf, void *cls);
static int cproc_cwd(struct ftp *ftp, int code, const char *buf, void *cls);
return 0;
}
ftp->ctl = ftp->data = ftp->lis = -1;
+ ftp->passive = 1;
+
+ ftp->dirent = darr_alloc(0, sizeof *ftp->dirent);
return ftp;
}
if(ftp->ctl >= 0) {
ftp_close(ftp);
}
+
+ free_dir(ftp->dirent);
+}
+
+static void free_dir(struct ftp_dirent *dir)
+{
+ int i;
+ for(i=0; i<darr_size(dir); i++) {
+ free(dir[i].name);
+ }
+ darr_free(dir);
}
int ftp_connect(struct ftp *ftp, const char *hostname, int port)
ftp_chdir(ftp, arg);
break;
+ case FTP_CDUP:
+ ftp_chdir(ftp, "..");
+ break;
+
case FTP_MKDIR:
ftp_mkdir(ftp, arg);
break;
{
struct ftp_op *fop;
- if(!ftp->qhead) {
+ if(!ftp->busy && !ftp->qhead) {
exec_op(ftp, op, arg);
return 0;
}
if(!(fop = malloc(sizeof *fop))) {
return -1;
}
- if(!(fop->arg = strdup(arg))) {
- free(fop);
- return -1;
+ if(arg) {
+ if(!(fop->arg = strdup(arg))) {
+ free(fop);
+ return -1;
+ }
+ } else {
+ fop->arg = 0;
}
fop->op = op;
fop->next = 0;
- ftp->qtail->next = fop;
- ftp->qtail = fop;
+ if(ftp->qhead) {
+ ftp->qtail->next = fop;
+ ftp->qtail = fop;
+ } else {
+ ftp->qhead = ftp->qtail = fop;
+ }
return 0;
}
return 0;
}
+static int ftp_passive(struct ftp *ftp)
+{
+ if(ftp->lis >= 0) {
+ closesocket(ftp->lis);
+ ftp->lis = -1;
+ }
+ if(ftp->data >= 0) {
+ closesocket(ftp->data);
+ ftp->data = -1;
+ }
+
+ sendcmd(ftp, "PASV");
+ ftp->cproc = cproc_pasv;
+ return 0;
+}
+
int ftp_handle(struct ftp *ftp, int s)
{
if(s == ftp->ctl) {
return -1;
}
+ ftp->busy = 1;
+
va_start(ap, fmt);
vsprintf(buf, fmt, ap);
va_end(ap);
int i, sz, rd;
char *buf, *start, *end;
- while((sz = sizeof ftp->crecv - ftp->num_crecv) > 0) {
+ for(;;) {
+ if((sz = sizeof ftp->crecv - ftp->num_crecv) <= 0) {
+ /* discard buffer */
+ warnmsg("discard buffer\n");
+ sz = sizeof ftp->crecv;
+ ftp->num_crecv = 0;
+ }
start = ftp->crecv + ftp->num_crecv;
if((rd = recv(ftp->ctl, start, sz, 0)) == -1) {
if(errno == EINTR) continue;
end = start + rd;
buf = ftp->crecv;
for(i=0; i<rd; i++) {
- if(start[i] == '\n') {
+ if(start[i] == '\r') {
+ start[i] = 0;
+ } else if(start[i] == '\n') {
start[i] = 0;
proc_control(ftp, buf);
buf = start + i + 1;
if(buf != ftp->crecv && buf < end) {
ftp->num_crecv = end - buf;
memmove(ftp->crecv, buf, ftp->num_crecv);
+ } else {
+ ftp->num_crecv = 0;
}
}
return 0;
if(ftp->cproc) {
if(ftp->cproc(ftp, code, buf, ftp->cproc_cls) <= 0) {
ftp->cproc = 0;
+ ftp->busy = 0;
/* execute next operation if there's one queued */
exec_queued(ftp);
}
return;
}
+ ftp->busy = 0;
switch(code) {
case 220:
static int newconn(struct ftp *ftp)
{
- if(ftp_active(ftp) == -1) {
- return -1;
- }
ftp_queue(ftp, FTP_PWD, 0);
ftp_queue(ftp, FTP_LIST, 0);
return 0;
int ftp_chdir(struct ftp *ftp, const char *dirname)
{
- sendcmd(ftp, "cwd %s", dirname);
+ if(strcmp(dirname, "..") == 0) {
+ sendcmd(ftp, "cdup");
+ } else {
+ sendcmd(ftp, "cwd %s", dirname);
+ }
ftp->cproc = cproc_cwd;
return 0;
}
return -1;
}
+static int prepare_data(struct ftp *ftp)
+{
+ if(ftp->data >= 0) {
+ return 0;
+ }
+
+ if(ftp->passive) {
+ ftp_passive(ftp);
+ ftp_waitresp(ftp, TIMEOUT);
+ } else {
+ if(ftp_active(ftp) == -1) {
+ return -1;
+ }
+ }
+ if(ftp->data == -1) {
+ return -1;
+ }
+ return 0;
+}
+
struct recvbuf {
char *buf;
long size, bufsz;
{
struct recvbuf *rbuf;
+ if(prepare_data(ftp)) {
+ return -1;
+ }
+
if(!(rbuf = malloc(sizeof *rbuf))) {
errmsg("failed to allocate receive buffer\n");
return -1;
return 0;
}
+static int cproc_pasv(struct ftp *ftp, int code, const char *buf, void *cls)
+{
+ const char *str;
+ unsigned int addr[6];
+ struct sockaddr_in sa;
+ unsigned int ipaddr;
+ int port;
+
+ if(code != 227) {
+ errmsg("ftp_passive failed\n");
+ goto nopasv;
+ }
+
+ str = buf;
+ while(*str) {
+ if(sscanf(str, "%u,%u,%u,%u,%u,%u", addr, addr + 1, addr + 2, addr + 3,
+ addr + 4, addr + 5) == 6) {
+ break;
+ }
+ str++;
+ }
+ if(!*str || (addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]) >= 256) {
+ errmsg("ftp_passive: failed to parse response: %s\n", buf);
+ goto nopasv;
+ }
+ port = (addr[4] << 8) | addr[5];
+ ipaddr = ((uint32_t)addr[0] << 24) | ((uint32_t)addr[1] << 16) |
+ ((uint32_t)addr[2] << 8) | addr[3];
+
+ if((ftp->data = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
+ fprintf(stderr, "ftp_passive: failed to allocate socket\n");
+ goto nopasv;
+ }
+
+ infomsg("passive mode: %d.%d.%d.%d port %d\n", addr[0], addr[1], addr[2], addr[3],
+ port);
+
+ sa.sin_family = AF_INET;
+ sa.sin_addr.s_addr = htonl(ipaddr);
+ sa.sin_port = htons(port);
+
+ if(connect(ftp->data, (struct sockaddr*)&sa, sizeof sa) == -1) {
+ errmsg("ftp_passive: failed to connect to %s:%p\n", inet_ntoa(sa.sin_addr), port);
+ close(ftp->data);
+ ftp->data = -1;
+ goto nopasv;
+ }
+
+ ftp->status = FTP_CONN_PASV;
+ return 0;
+
+nopasv:
+ ftp->passive = 0;
+ ftp_active(ftp);
+ return 0;
+}
+
static int cproc_pwd(struct ftp *ftp, int code, const char *buf, void *cls)
{
char *dirname;
return -1;
}
- free(ftp->curdir_rem);
- ftp->curdir_rem = strdup_nf(dirname);
- ftp->modified = 1;
+ free(ftp->curdir);
+ ftp->curdir = strdup_nf(dirname);
+ ftp->modified = FTP_MOD_DIR;
return 0;
}
static int cproc_cwd(struct ftp *ftp, int code, const char *buf, void *cls)
{
- return -1;
+ if(code != 250) {
+ warnmsg("cwd failed\n");
+ return -1;
+ }
+
+ ftp_queue(ftp, FTP_PWD, 0);
+ ftp_queue(ftp, FTP_LIST, 0);
+ return 0;
}
static int cproc_list(struct ftp *ftp, int code, const char *buf, void *cls)
return 0;
}
+#define SKIP_FIELD(p) \
+ do { \
+ while(*(p) && *(p) != '\n' && !isspace(*(p))) (p)++; \
+ while(*(p) && *(p) != '\n' && isspace(*(p))) (p)++; \
+ } while(0)
+
+static int parse_dirent(struct ftp_dirent *ent, const char *line)
+{
+ int len;
+ const char *ptr = line;
+ const char *end;
+
+ if(!(end = strchr(line, '\r')) && !(end = strchr(line, '\n'))) {
+ return -1;
+ }
+
+ if(line[0] == 'd') {
+ ent->type = FTP_DIR;
+ } else {
+ ent->type = FTP_FILE;
+ }
+
+ SKIP_FIELD(ptr); /* skip mode */
+ SKIP_FIELD(ptr); /* skip links */
+ SKIP_FIELD(ptr); /* skip owner */
+ SKIP_FIELD(ptr); /* skip group */
+
+ if(ent->type == FTP_FILE) {
+ ent->size = atoi(ptr);
+ }
+ SKIP_FIELD(ptr); /* skip size */
+ SKIP_FIELD(ptr); /* skip month */
+ SKIP_FIELD(ptr); /* skip day */
+ SKIP_FIELD(ptr); /* skip year */
+
+ if(ptr >= end) return -1;
+
+ len = end - ptr;
+ ent->name = malloc(len + 1);
+ memcpy(ent->name, ptr, len);
+ ent->name[len] = 0;
+
+ return 0;
+}
+
+int ftp_direntcmp(const void *a, const void *b)
+{
+ const struct ftp_dirent *da = a, *db = b;
+
+ if(da->type == db->type) {
+ return strcmp(da->name, db->name);
+ }
+ return da->type == FTP_DIR ? -1 : 1;
+}
+
static void dproc_list(struct ftp *ftp, const char *buf, int sz, void *cls)
{
+ int num;
struct recvbuf *rbuf = cls;
if(sz == 0) {
/* EOF condition, we got the whole list, update directory entries */
- /* TODO */
- rbuf->buf[rbuf->size] = 0;
- infomsg("%s\n", rbuf->buf);
+ char *ptr = rbuf->buf;
+ char *end = rbuf->buf + rbuf->size;
+ struct ftp_dirent ent;
+
+ darr_clear(ftp->dirent);
+
+ while(ptr < end) {
+ if(parse_dirent(&ent, ptr) != -1) {
+ darr_push(ftp->dirent, &ent);
+ }
+ while(ptr < end && *ptr != '\n' && *ptr != '\r') ptr++;
+ while(ptr < end && (*ptr == '\r' || *ptr == '\n')) ptr++;
+ }
+ ftp->modified |= FTP_MOD_DIR;
free(rbuf->buf);
free(rbuf);
ftp->dproc = 0;
+
+ num = darr_size(ftp->dirent);
+ qsort(ftp->dirent, num, sizeof *ftp->dirent, ftp_direntcmp);
return;
}
memcpy(rbuf->buf + rbuf->size, buf, sz);
rbuf->size += sz;
}
+
+const char *ftp_curdir(struct ftp *ftp)
+{
+ return ftp->curdir;
+}
+
+int ftp_num_dirent(struct ftp *ftp)
+{
+ return darr_size(ftp->dirent);
+}
+
+struct ftp_dirent *ftp_dirent(struct ftp *ftp, int idx)
+{
+ return ftp->dirent + idx;
+}