/*
- * Copyright (C) 2007-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include <regex.h>
#include <fnmatch.h>
-#include <openssl/rc4.h>
#include <osl.h>
#include "para.h"
#include "string.h"
#include "afh.h"
#include "afs.h"
-#include "net.h"
#include "ipc.h"
#include "portable_io.h"
+#include "sideband.h"
+#include "command.h"
/**
* Compare two osl objects pointing to unsigned integers of 32 bit size.
/** Define an osl table description for a blob table. */
#define DEFINE_BLOB_TABLE_DESC(table_name) \
- struct osl_table_description table_name ## _table_desc = { \
+ static struct osl_table_description table_name ## _table_desc = { \
.name = #table_name, \
.num_columns = NUM_BLOB_COLUMNS, \
.flags = OSL_LARGE_TABLE, \
DEFINE_BLOB_TABLE_DESC(table_name); \
DEFINE_BLOB_TABLE_PTR(table_name);
-/** \cond doxygen isn't smart enough to recognize these */
+/* doxygen isn't smart enough to recognize these */
+/** \cond blob_table */
INIT_BLOB_TABLE(lyrics);
INIT_BLOB_TABLE(images);
INIT_BLOB_TABLE(moods);
INIT_BLOB_TABLE(playlists);
-/** \endcond */
+/** \endcond blob_table */
/** Flags that may be passed to the \p ls functions of each blob type. */
enum blob_ls_flags {
BLOB_LS_FLAG_SORT_BY_ID = 4,
};
-/** Structure passed to the \p print_blob function. */
-struct lsblob_action_data {
- /** The flags given at the command line. */
- uint32_t flags;
- /** Message buffer. */
- struct para_buffer pb;
-};
-
static int print_blob(struct osl_table *table, struct osl_row *row,
const char *name, void *data)
{
- struct lsblob_action_data *lbad = data;
+ struct afs_callback_arg *aca = data;
+ uint32_t flags = *(uint32_t *)aca->query.data;
struct osl_object obj;
uint32_t id;
int ret;
- if (!(lbad->flags & BLOB_LS_FLAG_LONG))
- return para_printf(&lbad->pb, "%s\n", name);
+ if (!(flags & BLOB_LS_FLAG_LONG)) {
+ para_printf(&aca->pbout, "%s\n", name);
+ return 0;
+ }
ret = osl(osl_get_object(table, row, BLOBCOL_ID, &obj));
if (ret < 0) {
- para_printf(&lbad->pb, "%s: %s\n", name, para_strerror(-ret));
+ para_printf(&aca->pbout, "cannot list %s\n", name);
return ret;
}
id = *(uint32_t *)obj.data;
- return para_printf(&lbad->pb, "%u\t%s\n", id, name);
+ para_printf(&aca->pbout, "%u\t%s\n", id, name);
+ return 1;
}
-static void com_lsblob_callback(struct osl_table *table,
- int fd, const struct osl_object *query)
+static int com_lsblob_callback(struct osl_table *table,
+ struct afs_callback_arg *aca)
{
- struct lsblob_action_data lbad = {
- .flags = *(uint32_t *)query->data,
- .pb = {
- .max_size = SHMMAX,
- .private_data = &fd,
- .max_size_handler = pass_buffer_as_shm
- }
- };
+ uint32_t flags = *(uint32_t *)aca->query.data;
struct pattern_match_data pmd = {
.table = table,
- .patterns = {.data = (char *)query->data + sizeof(uint32_t),
- .size = query->size - sizeof(uint32_t)},
+ .patterns = {.data = (char *)aca->query.data + sizeof(uint32_t),
+ .size = aca->query.size - sizeof(uint32_t)},
.pm_flags = PM_NO_PATTERN_MATCHES_EVERYTHING | PM_SKIP_EMPTY_NAME,
.match_col_num = BLOBCOL_NAME,
- .data = &lbad,
+ .data = aca,
.action = print_blob,
};
int ret;
- if (lbad.flags & BLOB_LS_FLAG_REVERSE)
+ if (flags & BLOB_LS_FLAG_REVERSE)
pmd.pm_flags |= PM_REVERSE_LOOP;
- if (!(lbad.flags & BLOB_LS_FLAG_SORT_BY_ID))
+ if (!(flags & BLOB_LS_FLAG_SORT_BY_ID))
pmd.loop_col_num = BLOBCOL_NAME;
else
pmd.loop_col_num = BLOBCOL_ID;
ret = for_each_matching_row(&pmd);
if (ret < 0)
- para_printf(&lbad.pb, "%s\n", para_strerror(-ret));
- if (lbad.pb.offset)
- pass_buffer_as_shm(lbad.pb.buf, lbad.pb.offset, &fd);
- free(lbad.pb.buf);
+ goto out;
+ if (pmd.num_matches == 0 && pmd.patterns.size > 0)
+ ret = -E_NO_MATCH;
+out:
+ return ret;
}
-static int com_lsblob(callback_function *f, struct rc4_context *rc4c, int argc, char * const * const argv)
+static int com_lsblob(afs_callback *f, struct command_context *cc)
{
uint32_t flags = 0;
struct osl_object options = {.data = &flags, .size = sizeof(flags)};
int i;
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
+ for (i = 1; i < cc->argc; i++) {
+ const char *arg = cc->argv[i];
if (arg[0] != '-')
break;
if (!strcmp(arg, "--")) {
}
// if (argc > i)
// return -E_BLOB_SYNTAX;
- return send_option_arg_callback_request(&options, argc - i,
- argv + i, f, rc4_send_result, rc4c);
+ return send_option_arg_callback_request(&options, cc->argc - i,
+ cc->argv + i, f, afs_cb_result_handler, cc);
}
static int cat_blob(struct osl_table *table, struct osl_row *row,
__a_unused const char *name, void *data)
{
- int ret = 0, ret2;
+ int ret = 0, ret2, fd = *(int *)data;
struct osl_object obj;
ret = osl(osl_open_disk_object(table, row, BLOBCOL_DEF, &obj));
if (ret < 0)
- return ret;
- if (obj.size)
- ret = pass_buffer_as_shm(obj.data, obj.size, data);
+ return (ret == osl(-E_OSL_EMPTY))? 0 : ret;
+ assert(obj.size > 0);
+ ret = pass_buffer_as_shm(fd, SBD_OUTPUT, obj.data, obj.size);
ret2 = osl(osl_close_disk_object(&obj));
return (ret < 0)? ret : ret2;
}
-static void com_catblob_callback(struct osl_table *table, int fd,
- const struct osl_object *query)
+static int com_catblob_callback(struct osl_table *table,
+ struct afs_callback_arg *aca)
{
+ int ret;
struct pattern_match_data pmd = {
.table = table,
- .patterns = *query,
+ .patterns = aca->query,
.loop_col_num = BLOBCOL_NAME,
.match_col_num = BLOBCOL_NAME,
.pm_flags = PM_SKIP_EMPTY_NAME,
- .data = &fd,
+ .data = &aca->fd,
.action = cat_blob
};
- for_each_matching_row(&pmd);
+ ret = for_each_matching_row(&pmd);
+ if (ret < 0)
+ return ret;
+ if (pmd.num_matches == 0)
+ ret = -E_NO_MATCH;
+ return ret;
}
-static int com_catblob(callback_function *f, struct rc4_context *rc4c, int argc,
- char * const * const argv)
+static int com_catblob(afs_callback *f, struct command_context *cc)
{
- if (argc < 2)
+ if (cc->argc < 2)
return -E_BLOB_SYNTAX;
- return send_standard_callback_request(argc - 1, argv + 1, f,
- rc4_send_result, rc4c);
+ return send_standard_callback_request(cc->argc - 1, cc->argv + 1, f,
+ afs_cb_result_handler, cc);
}
-/** Used for removing rows from a blob table. */
-struct rmblob_data {
- /** Message buffer. */
- struct para_buffer pb;
- /** Number of removed blobs. */
- unsigned num_removed;
-};
-
static int remove_blob(struct osl_table *table, struct osl_row *row,
const char *name, void *data)
{
- struct rmblob_data *rmbd = data;
+ struct afs_callback_arg *aca = data;
int ret = osl(osl_del_row(table, row));
if (ret < 0) {
- para_printf(&rmbd->pb, "%s: %s\n", name, para_strerror(-ret));
+ para_printf(&aca->pbout, "cannot remove %s\n", name);
return ret;
}
- rmbd->num_removed++;
return 1;
}
-static void com_rmblob_callback(struct osl_table *table, int fd,
- const struct osl_object *query)
+static int com_rmblob_callback(struct osl_table *table,
+ struct afs_callback_arg *aca)
{
- int ret, ret2 = 0;
- struct rmblob_data rmbd = {
- .num_removed = 0,
- .pb = {
- .max_size = SHMMAX,
- .private_data = &fd,
- .max_size_handler = pass_buffer_as_shm
- }
- };
+ int ret;
struct pattern_match_data pmd = {
.table = table,
- .patterns = *query,
+ .patterns = aca->query,
.loop_col_num = BLOBCOL_NAME,
.match_col_num = BLOBCOL_NAME,
.pm_flags = PM_SKIP_EMPTY_NAME,
- .data = &rmbd,
+ .data = aca,
.action = remove_blob
};
ret = for_each_matching_row(&pmd);
- if (ret < 0) {
- ret2 = para_printf(&rmbd.pb, "%s\n", para_strerror(-ret));
- if (ret2 < 0)
- goto out;
- }
- if (!rmbd.num_removed)
- ret2 = para_printf(&rmbd.pb, "no matches, nothing removed\n");
+ if (ret < 0)
+ goto out;
+ if (pmd.num_matches == 0)
+ ret = -E_NO_MATCH;
else {
- ret2 = para_printf(&rmbd.pb, "removed %d blobs\n", rmbd.num_removed);
- afs_event(BLOB_RENAME, NULL, table);
+ para_printf(&aca->pbout, "removed %d blob(s)\n",
+ pmd.num_matches);
+ ret = afs_event(BLOB_RENAME, NULL, table);
}
out:
- if (ret2 >= 0 && rmbd.pb.offset)
- pass_buffer_as_shm(rmbd.pb.buf, rmbd.pb.offset, &fd);
- free(rmbd.pb.buf);
+ return ret;
}
-static int com_rmblob(callback_function *f, struct rc4_context *rc4c, int argc,
- char * const * const argv)
+static int com_rmblob(afs_callback *f, struct command_context *cc)
{
- if (argc < 2)
+ if (cc->argc < 2)
return -E_MOOD_SYNTAX;
- return send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
- rc4_send_result, rc4c);
+ return send_option_arg_callback_request(NULL, cc->argc - 1, cc->argv + 1, f,
+ afs_cb_result_handler, cc);
}
-static void com_addblob_callback(struct osl_table *table, __a_unused int fd,
- const struct osl_object *query)
+static int com_addblob_callback(struct osl_table *table,
+ struct afs_callback_arg *aca)
{
struct osl_object objs[NUM_BLOB_COLUMNS];
- char *name = query->data;
+ char *name = aca->query.data;
size_t name_len = strlen(name) + 1;
uint32_t id;
unsigned num_rows;
if (ret < 0 && ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
goto out;
if (ret >= 0) { /* we already have a blob with this name */
+ ret = osl(osl_get_object(table, row, BLOBCOL_ID, &obj));
+ if (ret < 0)
+ goto out;
+ id = *(uint32_t *)obj.data;
obj.data = name + name_len;
- obj.size = query->size - name_len;
+ obj.size = aca->query.size - name_len;
ret = osl(osl_update_object(table, row, BLOBCOL_DEF, &obj));
goto out;
}
objs[BLOBCOL_NAME].data = name;
objs[BLOBCOL_NAME].size = name_len;
objs[BLOBCOL_DEF].data = name + name_len;
- objs[BLOBCOL_DEF].size = query->size - name_len;
+ objs[BLOBCOL_DEF].size = aca->query.size - name_len;
ret = osl(osl_add_row(table, objs));
if (ret < 0)
goto out;
- afs_event(BLOB_ADD, NULL, table);
+ ret = afs_event(BLOB_ADD, NULL, table);
out:
if (ret < 0)
- PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+ para_printf(&aca->pbout, "cannot add %s\n", name);
+ else
+ para_printf(&aca->pbout, "added %s as id %u\n", name, id);
+ return ret;
}
-/*
- * write input from fd to dynamically allocated buffer,
- * but maximal max_size byte.
- */
-static int fd2buf(struct rc4_context *rc4c, unsigned max_size, struct osl_object *obj)
+/* Write input from fd to dynamically allocated buffer, but maximal 10M. */
+static int fd2buf(struct stream_cipher_context *scc, struct osl_object *obj)
{
- const size_t chunk_size = 1024;
- size_t size = 2048, received = 0;
+ size_t max_size = 10 * 1024 * 1024;
int ret;
- char *buf = para_malloc(size);
+ struct iovec iov;
- for (;;) {
- ret = rc4_recv_bin_buffer(rc4c, buf + received, chunk_size);
- if (ret <= 0)
- break;
- received += ret;
- if (received + chunk_size >= size) {
- size *= 2;
- ret = -E_INPUT_TOO_LARGE;
- if (size > max_size)
- break;
- buf = para_realloc(buf, size);
- }
+ obj->data = NULL;
+ obj->size = 0;
+again:
+ do {
+ ret = recv_sb(scc, SBD_BLOB_DATA, max_size, &iov);
+ } while (ret == 0);
+
+ if (ret < 0) {
+ free(obj->data);
+ obj->data = NULL;
+ obj->size = 0;
+ return ret;
}
- obj->data = buf;
- obj->size = received;
- if (ret < 0)
- free(buf);
- return ret;
+ if (iov.iov_len == 0) /* end of blob */
+ return 1;
+ if (!obj->data) {
+ obj->data = iov.iov_base;
+ obj->size = iov.iov_len;
+ } else {
+ obj->data = para_realloc(obj->data, obj->size + iov.iov_len);
+ memcpy(obj->data + obj->size, iov.iov_base, iov.iov_len);
+ obj->size += iov.iov_len;
+ free(iov.iov_base);
+ max_size -= iov.iov_len;
+ }
+ goto again;
+ return 1;
}
/*
- * Read data from a file descriptor, and send it to the afs process.
- *
- * \param rc4c crypt context containing the file descriptor to read data from.
- * \param arg_obj Pointer to the arguments to \a f.
- * \param f The callback function.
- * \param max_len Don't read more than that many bytes from stdin.
- * \param result_handler See \ref send_callback_request.
- * \param private_result_data See \ref send_callback_request.
+ * Read blob from a file descriptor and send it to afs.
*
- * This function is used by commands that wish to let para_server store
- * arbitrary data specified by the user (for instance the add_blob family of
- * commands). First, at most \a max_len bytes are read and decrypted from the
- * file descriptor given by \a rc4c. The result is concatenated with the buffer
- * given by \a arg_obj, and the combined buffer is made available to the afs
- * process via the callback method. See \ref send_callback_request for details.
- *
- * \return Negative on errors, the return value of the underlying call to
- * send_callback_request() otherwise.
+ * This function is called from the addblob command handlers to instruct the
+ * afs process to store the input in a blob table. Input is read and decrypted
+ * from the file descriptor given by cc and appended to arg_obj, which contains
+ * the name of the blob to create. The combined buffer is made available to the
+ * afs process via the callback method.
*/
-static int stdin_command(struct rc4_context *rc4c, struct osl_object *arg_obj,
- callback_function *f, unsigned max_len,
- callback_result_handler *result_handler,
- void *private_result_data)
+static int stdin_command(struct command_context *cc, struct osl_object *arg_obj,
+ afs_callback *f)
{
struct osl_object query, stdin_obj;
int ret;
- ret = rc4_send_buffer(rc4c, AWAITING_DATA_MSG);
+ ret = send_sb(&cc->scc, NULL, 0, SBD_AWAITING_DATA, false);
if (ret < 0)
return ret;
- ret = fd2buf(rc4c, max_len, &stdin_obj);
+ ret = fd2buf(&cc->scc, &stdin_obj);
if (ret < 0)
return ret;
query.size = arg_obj->size + stdin_obj.size;
query.data = para_malloc(query.size);
memcpy(query.data, arg_obj->data, arg_obj->size);
- memcpy((char *)query.data + arg_obj->size, stdin_obj.data, stdin_obj.size);
+ if (stdin_obj.size > 0)
+ memcpy((char *)query.data + arg_obj->size, stdin_obj.data,
+ stdin_obj.size);
free(stdin_obj.data);
- ret = send_callback_request(f, &query, result_handler, private_result_data);
+ ret = send_callback_request(f, &query, afs_cb_result_handler, cc);
free(query.data);
return ret;
}
-static int com_addblob(callback_function *f, struct rc4_context *rc4c, int argc,
- char * const * const argv)
+static int com_addblob(afs_callback *f, struct command_context *cc)
{
struct osl_object arg_obj;
- if (argc != 2)
+ if (cc->argc != 2)
return -E_BLOB_SYNTAX;
- if (!*argv[1]) /* empty name is reserved for the dummy row */
+ if (!*cc->argv[1]) /* empty name is reserved for the dummy row */
return -E_BLOB_SYNTAX;
- arg_obj.size = strlen(argv[1]) + 1;
- arg_obj.data = (char *)argv[1];
- return stdin_command(rc4c, &arg_obj, f, 10 * 1024 * 1024, NULL, NULL);
+ arg_obj.size = strlen(cc->argv[1]) + 1;
+ arg_obj.data = (char *)cc->argv[1];
+ return stdin_command(cc, &arg_obj, f);
}
-/* FIXME: Print output to client, not to log file */
-static void com_mvblob_callback(struct osl_table *table, __a_unused int fd,
- const struct osl_object *query)
+static int com_mvblob_callback(struct osl_table *table,
+ struct afs_callback_arg *aca)
{
- char *src = (char *) query->data;
+ char *src = (char *)aca->query.data;
struct osl_object obj = {.data = src, .size = strlen(src) + 1};
char *dest = src + obj.size;
struct osl_row *row;
int ret = osl(osl_get_row(table, BLOBCOL_NAME, &obj, &row));
- if (ret < 0)
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot find source blob %s\n", src);
goto out;
+ }
obj.data = dest;
obj.size = strlen(dest) + 1;
ret = osl(osl_update_object(table, row, BLOBCOL_NAME, &obj));
- if (ret < 0)
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot rename blob %s to %s\n",
+ src, dest);
goto out;
- afs_event(BLOB_RENAME, NULL, table);
+ }
+ ret = afs_event(BLOB_RENAME, NULL, table);
out:
- if (ret < 0)
- PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+ return ret;
}
-static int com_mvblob(callback_function *f, __a_unused struct rc4_context *rc4c,
- int argc, char * const * const argv)
+static int com_mvblob(afs_callback *f, struct command_context *cc)
{
- if (argc != 3)
+ if (cc->argc != 3)
return -E_MOOD_SYNTAX;
- return send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
- NULL, NULL);
+ return send_option_arg_callback_request(NULL, cc->argc - 1,
+ cc->argv + 1, f, afs_cb_result_handler, cc);
}
#define DEFINE_BLOB_COMMAND(cmd_name, table_name, cmd_prefix) \
- static void com_ ## cmd_name ## cmd_prefix ## _callback(int fd, const struct osl_object *query) \
+ static int com_ ## cmd_name ## cmd_prefix ## _callback(struct afs_callback_arg *aca) \
{ \
- return com_ ## cmd_name ## blob_callback(table_name ## _table, fd, query); \
+ return com_ ## cmd_name ## blob_callback(table_name ## _table, aca); \
} \
- int com_ ## cmd_name ## cmd_prefix(struct rc4_context *rc4c, int argc, char * const * const argv) \
+ int com_ ## cmd_name ## cmd_prefix(struct command_context *cc) \
{ \
- return com_ ## cmd_name ## blob(com_ ## cmd_name ## cmd_prefix ## _callback, rc4c, argc, argv); \
+ return com_ ## cmd_name ## blob(com_ ## cmd_name ## cmd_prefix ## _callback, cc); \
}
static int blob_get_name_by_id(struct osl_table *table, uint32_t id,
/** Define the \p close function for this blob type. */
#define DEFINE_BLOB_CLOSE(table_name) \
- void table_name ## _close(void) \
+ static void table_name ## _close(void) \
{ \
osl_close_table(table_name ## _table, OSL_MARK_CLEAN); \
table_name ## _table = NULL; \
/** Define the \p create function for this blob type. */
#define DEFINE_BLOB_CREATE(table_name) \
- int table_name ## _create(const char *dir) \
+ static int table_name ## _create(const char *dir) \
{ \
table_name ## _table_desc.dir = dir; \
- return osl_create_table(&table_name ## _table_desc); \
+ return osl(osl_create_table(&table_name ## _table_desc)); \
}
static int blob_open(struct osl_table **table,
}
#define DEFINE_BLOB_OPEN(table_name) \
- int table_name ## _open(const char *dir) \
+ static int table_name ## _open(const char *dir) \
{ \
return blob_open(&table_name ## _table, \
&table_name ## _table_desc, dir); \
DEFINE_GET_DEF_BY_NAME(table_name, cmd_prefix); \
DEFINE_GET_NAME_AND_DEF_BY_ROW(table_name, cmd_prefix); \
-/** \cond doxygen isn't smart enough to recognize these */
+/* doxygen isn't smart enough to recognize these */
+/** \cond blob_function */
DEFINE_BLOB_FUNCTIONS(lyrics, lyr);
DEFINE_BLOB_FUNCTIONS(images, img);
DEFINE_BLOB_FUNCTIONS(moods, mood);
DEFINE_BLOB_FUNCTIONS(playlists, pl);
-/** \endcond */
+/** \endcond blob_function */