#include <stdio.h>
#include <ctype.h>
+/* record a change that was done to a package */
+void
+uci_add_history(struct uci_context *ctx, struct uci_list *list, int cmd, const char *section, const char *option, const char *value)
+{
+ struct uci_history *h;
+ int size = strlen(section) + 1;
+ char *ptr;
+
+ if (value)
+ size += strlen(value) + 1;
+
+ h = uci_alloc_element(ctx, history, option, size);
+ ptr = uci_dataptr(h);
+ h->cmd = cmd;
+ h->section = strcpy(ptr, section);
+ if (value) {
+ ptr += strlen(ptr) + 1;
+ h->value = strcpy(ptr, value);
+ }
+ uci_list_add(list, &h->e.list);
+}
+
+void
+uci_free_history(struct uci_history *h)
+{
+ if (!h)
+ return;
+ if ((h->section != NULL) &&
+ (h->section != uci_dataptr(h))) {
+ free(h->section);
+ free(h->value);
+ }
+ uci_free_element(&h->e);
+}
+
+
int uci_set_savedir(struct uci_context *ctx, const char *dir)
{
char *sdir;
return 0;
}
-static inline void uci_parse_history_tuple(struct uci_context *ctx, char **buf, char **package, char **section, char **option, char **value, bool *delete, bool *rename)
+static inline int uci_parse_history_tuple(struct uci_context *ctx, char **buf, struct uci_ptr *ptr)
{
- if (**buf == '-') {
- if (delete)
- *delete = true;
- *buf += 1;
- } else if (**buf == '@') {
- if (rename)
- *rename = true;
+ int c = UCI_CMD_CHANGE;
+
+ switch(**buf) {
+ case '^':
+ c = UCI_CMD_REORDER;
+ break;
+ case '-':
+ c = UCI_CMD_REMOVE;
+ break;
+ case '@':
+ c = UCI_CMD_RENAME;
+ break;
+ case '+':
+ /* UCI_CMD_ADD is used for anonymous sections or list values */
+ c = UCI_CMD_ADD;
+ break;
+ case '|':
+ c = UCI_CMD_LIST_ADD;
+ break;
+ }
+
+ if (c != UCI_CMD_CHANGE)
*buf += 1;
+
+ UCI_INTERNAL(uci_parse_ptr, ctx, ptr, *buf);
+
+ if (!ptr->section)
+ goto error;
+ if (ptr->flags & UCI_LOOKUP_EXTENDED)
+ goto error;
+
+ switch(c) {
+ case UCI_CMD_REORDER:
+ if (!ptr->value || ptr->option)
+ goto error;
+ break;
+ case UCI_CMD_RENAME:
+ if (!ptr->value || !uci_validate_name(ptr->value))
+ goto error;
+ break;
+ case UCI_CMD_LIST_ADD:
+ if (!ptr->option)
+ goto error;
}
- UCI_INTERNAL(uci_parse_tuple, ctx, *buf, package, section, option, value);
+ return c;
+
+error:
+ UCI_THROW(ctx, UCI_ERR_INVAL);
+ return 0;
}
+
static void uci_parse_history_line(struct uci_context *ctx, struct uci_package *p, char *buf)
{
- bool delete = false;
- bool rename = false;
- char *package = NULL;
- char *section = NULL;
- char *option = NULL;
- char *value = NULL;
+ struct uci_element *e = NULL;
+ struct uci_ptr ptr;
+ int cmd;
- uci_parse_history_tuple(ctx, &buf, &package, §ion, &option, &value, &delete, &rename);
- if (!package || (strcmp(package, p->e.name) != 0))
+ cmd = uci_parse_history_tuple(ctx, &buf, &ptr);
+ if (strcmp(ptr.package, p->e.name) != 0)
goto error;
- if (!uci_validate_name(section))
- goto error;
- if (option && !uci_validate_name(option))
- goto error;
- if ((rename || (!option && !delete)) && !uci_validate_name(value))
- goto error;
-
- if (rename)
- UCI_INTERNAL(uci_rename, ctx, p, section, option, value);
- else if (delete)
- UCI_INTERNAL(uci_delete, ctx, p, section, option);
- else
- UCI_INTERNAL(uci_set, ctx, p, section, option, value);
+ if (ctx->flags & UCI_FLAG_SAVED_HISTORY)
+ uci_add_history(ctx, &p->saved_history, cmd, ptr.section, ptr.option, ptr.value);
+
+ switch(cmd) {
+ case UCI_CMD_REORDER:
+ expand_ptr(ctx, &ptr, true);
+ if (!ptr.s)
+ UCI_THROW(ctx, UCI_ERR_NOTFOUND);
+ UCI_INTERNAL(uci_reorder_section, ctx, ptr.s, strtoul(ptr.value, NULL, 10));
+ break;
+ case UCI_CMD_RENAME:
+ UCI_INTERNAL(uci_rename, ctx, &ptr);
+ break;
+ case UCI_CMD_REMOVE:
+ UCI_INTERNAL(uci_delete, ctx, &ptr);
+ break;
+ case UCI_CMD_LIST_ADD:
+ UCI_INTERNAL(uci_add_list, ctx, &ptr);
+ break;
+ case UCI_CMD_ADD:
+ case UCI_CMD_CHANGE:
+ UCI_INTERNAL(uci_set, ctx, &ptr);
+ e = ptr.last;
+ if (!ptr.option && e && (cmd == UCI_CMD_ADD))
+ uci_to_section(e)->anonymous = true;
+ break;
+ }
return;
error:
UCI_THROW(ctx, UCI_ERR_PARSE);
}
-static void uci_parse_history(struct uci_context *ctx, FILE *stream, struct uci_package *p)
+/* returns the number of changes that were successfully parsed */
+static int uci_parse_history(struct uci_context *ctx, FILE *stream, struct uci_package *p)
{
struct uci_parse_context *pctx;
+ int changes = 0;
/* make sure no memory from previous parse attempts is leaked */
- ctx->internal = true;
uci_cleanup(ctx);
pctx = (struct uci_parse_context *) uci_malloc(ctx, sizeof(struct uci_parse_context));
UCI_TRAP_SAVE(ctx, error);
uci_parse_history_line(ctx, p, pctx->buf);
UCI_TRAP_RESTORE(ctx);
+ changes++;
error:
continue;
}
/* no error happened, we can get rid of the parser context now */
- ctx->internal = true;
uci_cleanup(ctx);
+ return changes;
}
-static void uci_load_history_file(struct uci_context *ctx, struct uci_package *p, char *filename, FILE **f, bool flush)
+/* returns the number of changes that were successfully parsed */
+static int uci_load_history_file(struct uci_context *ctx, struct uci_package *p, char *filename, FILE **f, bool flush)
{
FILE *stream = NULL;
+ int changes = 0;
UCI_TRAP_SAVE(ctx, done);
stream = uci_open_stream(ctx, filename, SEEK_SET, flush, false);
if (p)
- uci_parse_history(ctx, stream, p);
+ changes = uci_parse_history(ctx, stream, p);
UCI_TRAP_RESTORE(ctx);
done:
if (f)
*f = stream;
else if (stream)
uci_close_stream(stream);
+ return changes;
}
-static void uci_load_history(struct uci_context *ctx, struct uci_package *p, bool flush)
+/* returns the number of changes that were successfully parsed */
+static int uci_load_history(struct uci_context *ctx, struct uci_package *p, bool flush)
{
struct uci_element *e;
char *filename = NULL;
FILE *f = NULL;
+ int changes = 0;
- if (!p->confdir)
- return;
+ if (!p->has_history)
+ return 0;
uci_foreach_element(&ctx->history_path, e) {
if ((asprintf(&filename, "%s/%s", e->name, p->e.name) < 0) || !filename)
if ((asprintf(&filename, "%s/%s", ctx->savedir, p->e.name) < 0) || !filename)
UCI_THROW(ctx, UCI_ERR_MEM);
- uci_load_history_file(ctx, p, filename, &f, flush);
- if (flush && f) {
+ changes = uci_load_history_file(ctx, p, filename, &f, flush);
+ if (flush && f && (changes > 0)) {
rewind(f);
- ftruncate(fileno(f), 0);
+ if (ftruncate(fileno(f), 0) < 0) {
+ uci_close_stream(f);
+ UCI_THROW(ctx, UCI_ERR_IO);
+ }
}
if (filename)
free(filename);
uci_close_stream(f);
- ctx->errno = 0;
+ ctx->err = 0;
+ return changes;
}
-static void uci_filter_history(struct uci_context *ctx, const char *name, char *section, char *option)
+static void uci_filter_history(struct uci_context *ctx, const char *name, const char *section, const char *option)
{
struct uci_parse_context *pctx;
struct uci_element *e, *tmp;
struct uci_list list;
char *filename = NULL;
- char *p = NULL;
- char *s = NULL;
- char *o = NULL;
- char *v = NULL;
+ struct uci_ptr ptr;
FILE *f = NULL;
uci_list_init(&list);
e = uci_alloc_generic(ctx, UCI_TYPE_HISTORY, pctx->buf, sizeof(struct uci_element));
uci_list_add(&list, &e->list);
- uci_parse_history_tuple(ctx, &buf, &p, &s, &o, &v, NULL, NULL);
+ uci_parse_history_tuple(ctx, &buf, &ptr);
if (section) {
- if (!s || (strcmp(section, s) != 0))
+ if (!ptr.section || (strcmp(section, ptr.section) != 0))
continue;
}
if (option) {
- if (!o || (strcmp(option, o) != 0))
+ if (!ptr.option || (strcmp(option, ptr.option) != 0))
continue;
}
/* match, drop this element again */
/* rebuild the history file */
rewind(f);
- ftruncate(fileno(f), 0);
+ if (ftruncate(fileno(f), 0) < 0)
+ UCI_THROW(ctx, UCI_ERR_IO);
uci_foreach_element_safe(&list, tmp, e) {
fprintf(f, "%s\n", e->name);
uci_free_element(e);
done:
if (filename)
free(filename);
- uci_close_stream(f);
+ uci_close_stream(pctx->file);
uci_foreach_element_safe(&list, tmp, e) {
uci_free_element(e);
}
- ctx->internal = true;
uci_cleanup(ctx);
}
-int uci_revert(struct uci_context *ctx, struct uci_package **pkg, char *section, char *option)
+int uci_revert(struct uci_context *ctx, struct uci_ptr *ptr)
{
- struct uci_package *p;
- char *name = NULL;
+ char *package = NULL;
+ char *section = NULL;
+ char *option = NULL;
UCI_HANDLE_ERR(ctx);
- UCI_ASSERT(ctx, pkg != NULL);
- p = *pkg;
- UCI_ASSERT(ctx, p != NULL);
- UCI_ASSERT(ctx, p->confdir);
+ expand_ptr(ctx, ptr, false);
+ UCI_ASSERT(ctx, ptr->p->has_history);
/*
* - flush unwritten changes
* - reload the package
*/
UCI_TRAP_SAVE(ctx, error);
- UCI_INTERNAL(uci_save, ctx, p);
- name = uci_strdup(ctx, p->e.name);
+ UCI_INTERNAL(uci_save, ctx, ptr->p);
- *pkg = NULL;
- uci_free_package(&p);
- uci_filter_history(ctx, name, section, option);
+ /* NB: need to clone package, section and option names,
+ * as they may get freed on uci_free_package() */
+ package = uci_strdup(ctx, ptr->p->e.name);
+ if (ptr->section)
+ section = uci_strdup(ctx, ptr->section);
+ if (ptr->option)
+ option = uci_strdup(ctx, ptr->option);
- UCI_INTERNAL(uci_load, ctx, name, &p);
+ uci_free_package(&ptr->p);
+ uci_filter_history(ctx, package, section, option);
+
+ UCI_INTERNAL(uci_load, ctx, package, &ptr->p);
UCI_TRAP_RESTORE(ctx);
+ ctx->err = 0;
- goto done;
error:
- if (name)
- free(name);
- UCI_THROW(ctx, ctx->errno);
-done:
+ if (package)
+ free(package);
+ if (section)
+ free(section);
+ if (option)
+ free(option);
+ if (ctx->err)
+ UCI_THROW(ctx, ctx->err);
return 0;
}
FILE *f = NULL;
char *filename = NULL;
struct uci_element *e, *tmp;
+ struct stat statbuf;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, p != NULL);
* directly.
* does not modify the uci_package pointer
*/
- if (!p->confdir)
+ if (!p->has_history)
return uci_commit(ctx, &p, false);
if (uci_list_empty(&p->history))
return 0;
+ if (stat(ctx->savedir, &statbuf) < 0)
+ mkdir(ctx->savedir, UCI_DIRMODE);
+ else if ((statbuf.st_mode & S_IFMT) != S_IFDIR)
+ UCI_THROW(ctx, UCI_ERR_IO);
+
if ((asprintf(&filename, "%s/%s", ctx->savedir, p->e.name) < 0) || !filename)
UCI_THROW(ctx, UCI_ERR_MEM);
- ctx->errno = 0;
+ uci_foreach_element(&ctx->hooks, tmp) {
+ struct uci_hook *hook = uci_to_hook(tmp);
+
+ if (!hook->ops->set)
+ continue;
+
+ uci_foreach_element(&p->history, e) {
+ hook->ops->set(hook->ops, p, uci_to_history(e));
+ }
+ }
+
+ ctx->err = 0;
UCI_TRAP_SAVE(ctx, done);
f = uci_open_stream(ctx, filename, SEEK_END, true, true);
UCI_TRAP_RESTORE(ctx);
uci_foreach_element_safe(&p->history, tmp, e) {
struct uci_history *h = uci_to_history(e);
+ char *prefix = "";
+
+ switch(h->cmd) {
+ case UCI_CMD_REMOVE:
+ prefix = "-";
+ break;
+ case UCI_CMD_RENAME:
+ prefix = "@";
+ break;
+ case UCI_CMD_ADD:
+ prefix = "+";
+ break;
+ case UCI_CMD_REORDER:
+ prefix = "^";
+ break;
+ case UCI_CMD_LIST_ADD:
+ prefix = "|";
+ break;
+ default:
+ break;
+ }
- if (h->cmd == UCI_CMD_REMOVE)
- fprintf(f, "-");
- else if (h->cmd == UCI_CMD_RENAME)
- fprintf(f, "@");
-
- fprintf(f, "%s.%s", p->e.name, h->section);
+ fprintf(f, "%s%s.%s", prefix, p->e.name, h->section);
if (e->name)
fprintf(f, ".%s", e->name);
uci_close_stream(f);
if (filename)
free(filename);
- if (ctx->errno)
- UCI_THROW(ctx, ctx->errno);
+ if (ctx->err)
+ UCI_THROW(ctx, ctx->err);
return 0;
}
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