summaryrefslogtreecommitdiffstats
path: root/server/responder/common/responder_packet.c
diff options
context:
space:
mode:
Diffstat (limited to 'server/responder/common/responder_packet.c')
-rw-r--r--server/responder/common/responder_packet.c253
1 files changed, 0 insertions, 253 deletions
diff --git a/server/responder/common/responder_packet.c b/server/responder/common/responder_packet.c
deleted file mode 100644
index 6e581a3c9..000000000
--- a/server/responder/common/responder_packet.c
+++ /dev/null
@@ -1,253 +0,0 @@
-/*
- SSSD
-
- SSS Client Responder, command parser
-
- Copyright (C) Simo Sorce <ssorce@redhat.com> 2008
-
- 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 3 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, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <string.h>
-#include <errno.h>
-#include "talloc.h"
-#include "util/util.h"
-#include "responder/common/responder_packet.h"
-
-#define SSSSRV_PACKET_MEM_SIZE 512
-
-struct sss_packet {
- size_t memsize;
- uint8_t *buffer;
-
- /* header */
- uint32_t *len;
- uint32_t *cmd;
- uint32_t *status;
- uint32_t *reserved;
-
- uint8_t *body;
-
- /* io pointer */
- size_t iop;
-};
-
-/*
- * Allocate a new packet structure
- *
- * - if size is defined use it otherwise the default packet will be
- * SSSSRV_PACKET_MEM_SIZE bytes.
- */
-int sss_packet_new(TALLOC_CTX *mem_ctx, size_t size,
- enum sss_cli_command cmd,
- struct sss_packet **rpacket)
-{
- struct sss_packet *packet;
-
- packet = talloc(mem_ctx, struct sss_packet);
- if (!packet) return ENOMEM;
-
- if (size) {
- int n = (size + SSS_NSS_HEADER_SIZE) % SSSSRV_PACKET_MEM_SIZE;
- packet->memsize = (n + 1) * SSSSRV_PACKET_MEM_SIZE;
- } else {
- packet->memsize = SSSSRV_PACKET_MEM_SIZE;
- }
-
- packet->buffer = talloc_size(packet, packet->memsize);
- if (!packet->buffer) {
- talloc_free(packet);
- return ENOMEM;
- }
- memset(packet->buffer, 0, SSS_NSS_HEADER_SIZE);
-
- packet->len = &((uint32_t *)packet->buffer)[0];
- packet->cmd = &((uint32_t *)packet->buffer)[1];
- packet->status = &((uint32_t *)packet->buffer)[2];
- packet->reserved = &((uint32_t *)packet->buffer)[3];
- packet->body = (uint8_t *)&((uint32_t *)packet->buffer)[4];
-
- *(packet->len) = size + SSS_NSS_HEADER_SIZE;
- *(packet->cmd) = cmd;
-
- packet->iop = 0;
-
- *rpacket = packet;
-
- return EOK;
-}
-
-/* grows a packet size only in SSSSRV_PACKET_MEM_SIZE chunks */
-int sss_packet_grow(struct sss_packet *packet, size_t size)
-{
- size_t totlen, len;
- uint8_t *newmem;
-
- if (size == 0) {
- return EOK;
- }
-
- totlen = packet->memsize;
- len = *packet->len + size;
-
- /* make sure we do not overflow */
- if (totlen < len) {
- int n = len % SSSSRV_PACKET_MEM_SIZE + 1;
- totlen += n * SSSSRV_PACKET_MEM_SIZE;
- if (totlen < len) {
- return EINVAL;
- }
- }
-
- if (totlen > packet->memsize) {
- newmem = talloc_realloc_size(packet, packet->buffer, totlen);
- if (!newmem) {
- return ENOMEM;
- }
-
- packet->memsize = totlen;
-
- /* re-set pointers if realloc had to move memory */
- if (newmem != packet->buffer) {
- packet->buffer = newmem;
- packet->len = &((uint32_t *)packet->buffer)[0];
- packet->cmd = &((uint32_t *)packet->buffer)[1];
- packet->status = &((uint32_t *)packet->buffer)[2];
- packet->reserved = &((uint32_t *)packet->buffer)[3];
- packet->body = (uint8_t *)&((uint32_t *)packet->buffer)[4];
- }
- }
-
- *(packet->len) += size;
-
- return 0;
-}
-
-/* reclaim backet previously resrved space in the packet
- * usually done in functione recovering from not fatal erros */
-int sss_packet_shrink(struct sss_packet *packet, size_t size)
-{
- size_t newlen;
-
- if (size > *(packet->len)) return EINVAL;
-
- newlen = *(packet->len) - size;
- if (newlen < SSS_NSS_HEADER_SIZE) return EINVAL;
-
- *(packet->len) = newlen;
- return 0;
-}
-
-int sss_packet_set_size(struct sss_packet *packet, size_t size)
-{
- size_t newlen;
-
- newlen = SSS_NSS_HEADER_SIZE + size;
-
- /* make sure we do not overflow */
- if (packet->memsize < newlen) return EINVAL;
-
- *(packet->len) = newlen;
-
- return 0;
-}
-
-int sss_packet_recv(struct sss_packet *packet, int fd)
-{
- size_t rb;
- size_t len;
- void *buf;
-
- buf = packet->buffer + packet->iop;
- if (packet->iop > 4) len = *packet->len - packet->iop;
- else len = packet->memsize - packet->iop;
-
- /* check for wrapping */
- if (len > packet->memsize) {
- return EINVAL;
- }
-
- errno = 0;
- rb = recv(fd, buf, len, 0);
-
- if (rb == -1 && errno == EAGAIN) {
- return EAGAIN;
- }
-
- if (rb == 0) {
- return ENODATA;
- }
-
- if (*packet->len > packet->memsize) {
- return EINVAL;
- }
-
- packet->iop += rb;
- if (packet->iop < 4) {
- return EAGAIN;
- }
-
- if (packet->iop < *packet->len) {
- return EAGAIN;
- }
-
- return EOK;
-}
-
-int sss_packet_send(struct sss_packet *packet, int fd)
-{
- size_t rb;
- size_t len;
- void *buf;
-
- buf = packet->buffer + packet->iop;
- len = *packet->len - packet->iop;
-
- errno = 0;
- rb = send(fd, buf, len, 0);
-
- if (rb == -1 && errno == EAGAIN) {
- return EAGAIN;
- }
-
- if (rb == 0) {
- return EIO;
- }
-
- packet->iop += rb;
-
- if (packet->iop < *packet->len) {
- return EAGAIN;
- }
-
- return EOK;
-}
-
-enum sss_cli_command sss_packet_get_cmd(struct sss_packet *packet)
-{
- return (enum sss_cli_command)(*packet->cmd);
-}
-
-void sss_packet_get_body(struct sss_packet *packet, uint8_t **body, size_t *blen)
-{
- *body = packet->body;
- *blen = *packet->len - SSS_NSS_HEADER_SIZE;
-}
-
-void sss_packet_set_error(struct sss_packet *packet, int error)
-{
- *(packet->status) = error;
-}
generated by cgit (git 2.34.1) at 2024-05-05 15:05:36 +0000