uint32_t sftp_parse_handle(struct sftpjob *job, struct handleid *id) {
uint32_t len, rc;
if((rc = sftp_parse_uint32(job, &len)) != SSH_FX_OK
|| len != 8
|| (rc = sftp_parse_uint32(job, &id->id)) != SSH_FX_OK
|| (rc = sftp_parse_uint32(job, &id->tag) != SSH_FX_OK))
return rc;
return SSH_FX_OK;
}
void queue_serializable_job(struct sftpjob *job) {
uint8_t type;
uint32_t id;
uint64_t offset, len64;
uint32_t len;
struct handleid hid;
unsigned handleflags;
struct sqnode *q;
job->ptr = job->data;
job->left = job->len;
if(!sftp_parse_uint8(job, &type)
&& (type == SSH_FXP_READ || type == SSH_FXP_WRITE)
&& sftp_parse_uint32(job, &id) == SSH_FX_OK
&& sftp_parse_handle(job, &hid) == SSH_FX_OK
&& sftp_parse_uint64(job, &offset) == SSH_FX_OK
&& sftp_parse_uint32(job, &len) == SSH_FX_OK) {
/* This is a well-formed read or write operation */
len64 = len;
handleflags = sftp_handle_flags(&hid);
} else {
/* Anything else has dummy values */
memset(&hid, 0, sizeof hid);
offset = 0;
len64 = ~(uint64_t)0;
handleflags = 0;
}
ferrcheck(pthread_mutex_lock(&sq_mutex));
q = xmalloc(sizeof *q);
q->older = newest;
q->job = job;
q->type = type;
q->hid = hid;
q->handleflags = handleflags;
q->offset = offset;
q->len = len64;
newest = q;
ferrcheck(pthread_mutex_unlock(&sq_mutex));
}
/* Command code for the various _*STAT calls. rc is the return value
* from *stat() and SB is the buffer. */
static uint32_t sftp_v456_stat_core(struct sftpjob *job, int rc,
const struct stat *sb, const char *path) {
struct sftpattr attrs;
uint32_t flags;
if(!rc) {
pcheck(sftp_parse_uint32(job, &flags));
sftp_stat_to_attrs(job->a, sb, &attrs, flags, path);
sftp_send_begin(job->worker);
sftp_send_uint8(job->worker, SSH_FXP_ATTRS);
sftp_send_uint32(job->worker, job->id);
protocol->sendattrs(job, &attrs);
sftp_send_end(job->worker);
return HANDLER_RESPONDED;
} else
return HANDLER_ERRNO;
}
uint32_t sftp_parse_string(struct sftpjob *job, char **strp, size_t *lenp) {
uint32_t len, rc;
char *str;
if((rc = sftp_parse_uint32(job, &len)) != SSH_FX_OK)
return rc;
if(len == 0xFFFFFFFF)
return SSH_FX_BAD_MESSAGE; /* overflow */
if(job->left < len)
return SSH_FX_BAD_MESSAGE; /* not enough bytes to satisfy */
if(lenp)
*lenp = len;
if(strp) {
str = sftp_alloc(job->a, len + 1); /* 0-fills */
memcpy(str, job->ptr, len);
*strp = str;
}
job->ptr += len;
job->left -= len;
return SSH_FX_OK;
}
uint32_t sftp_v456_parseattrs(struct sftpjob *job, struct sftpattr *attrs) {
uint32_t n, rc;
memset(attrs, 0, sizeof *attrs);
if((rc = sftp_parse_uint32(job, &attrs->valid)) != SSH_FX_OK)
return rc;
if((attrs->valid & protocol->attrmask) != attrs->valid) {
D(("received attrs %#x but protocol %d only supports %#x", attrs->valid,
protocol->version, protocol->attrmask));
attrs->valid = 0;
return SSH_FX_BAD_MESSAGE;
}
if((rc = sftp_parse_uint8(job, &attrs->type)) != SSH_FX_OK)
return rc;
if(attrs->valid & SSH_FILEXFER_ATTR_SIZE)
if((rc = sftp_parse_uint64(job, &attrs->size)) != SSH_FX_OK)
return rc;
if(attrs->valid & SSH_FILEXFER_ATTR_OWNERGROUP) {
if((rc = sftp_parse_path(job, &attrs->owner)) != SSH_FX_OK)
return rc;
if((rc = sftp_parse_path(job, &attrs->group)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_PERMISSIONS) {
if((rc = sftp_parse_uint32(job, &attrs->permissions)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_ACCESSTIME) {
if((rc = sftp_parse_uint64(job, (uint64_t *)&attrs->atime.seconds)) !=
SSH_FX_OK)
return rc;
if(attrs->valid & SSH_FILEXFER_ATTR_SUBSECOND_TIMES)
if((rc = sftp_parse_uint32(job, &attrs->atime.nanoseconds)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_CREATETIME) {
if((rc = sftp_parse_uint64(job, (uint64_t *)&attrs->createtime.seconds)) !=
SSH_FX_OK)
return rc;
if(attrs->valid & SSH_FILEXFER_ATTR_SUBSECOND_TIMES)
if((rc = sftp_parse_uint32(job, &attrs->createtime.nanoseconds)) !=
SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_MODIFYTIME) {
if((rc = sftp_parse_uint64(job, (uint64_t *)&attrs->mtime.seconds)) !=
SSH_FX_OK)
return rc;
if(attrs->valid & SSH_FILEXFER_ATTR_SUBSECOND_TIMES)
if((rc = sftp_parse_uint32(job, &attrs->mtime.nanoseconds)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_CTIME) {
if((rc = sftp_parse_uint64(job, (uint64_t *)&attrs->ctime.seconds)) !=
SSH_FX_OK)
return rc;
if(attrs->valid & SSH_FILEXFER_ATTR_SUBSECOND_TIMES)
if((rc = sftp_parse_uint32(job, &attrs->ctime.nanoseconds)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_ACL) {
if((rc = sftp_parse_string(job, &attrs->acl, 0)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_BITS) {
if((rc = sftp_parse_uint32(job, &attrs->attrib_bits)) != SSH_FX_OK)
return rc;
if(protocol->version >= 6) {
if((rc = sftp_parse_uint32(job, &attrs->attrib_bits_valid)) != SSH_FX_OK)
return rc;
} else
attrs->attrib_bits_valid = 0x7ff; /* -05 s5.8 */
}
if(attrs->valid & SSH_FILEXFER_ATTR_TEXT_HINT) {
if((rc = sftp_parse_uint8(job, &attrs->text_hint)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_MIME_TYPE) {
if((rc = sftp_parse_string(job, &attrs->mime_type, 0)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_LINK_COUNT) {
if((rc = sftp_parse_uint32(job, &attrs->link_count)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_UNTRANSLATED_NAME) {
if((rc = sftp_parse_string(job, &attrs->mime_type, 0)) != SSH_FX_OK)
return rc;
}
if(attrs->valid & SSH_FILEXFER_ATTR_EXTENDED) {
if((rc = sftp_parse_uint32(job, &n)) != SSH_FX_OK)
return rc;
while(n-- > 0) {
if((rc = sftp_parse_string(job, 0, 0)) != SSH_FX_OK)
return rc;
if((rc = sftp_parse_string(job, 0, 0)) != SSH_FX_OK)
return rc;
}
}
return SSH_FX_OK;
}