/*
* profile.c -- A simple configuration file parsing "library in a file"
- *
+ *
* The profile library was originally written by Theodore Ts'o in 1995
* for use in the MIT Kerberos v5 library. It has been
* modified/enhanced/bug-fixed over time by other members of the MIT
* This file may be redistributed under the terms of the GNU Public
* License.
* %End-Header%
- *
+ *
* Copyright (C) 1985-2005 by the Massachusetts Institute of Technology.
- *
+ *
* All rights reserved.
- *
+ *
* Export of this software from the United States of America may require
* a specific license from the United States Government. It is the
* responsibility of any person or organization contemplating export to
* obtain such a license before exporting.
- *
+ *
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* M.I.T. makes no representations about the suitability of this software
* for any purpose. It is provided "as is" without express or implied
* warranty.
- *
+ *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
+ *
*/
#ifdef HAVE_UNISTD_H
*/
#define PROFILE_FILE_RW 0x0001
#define PROFILE_FILE_DIRTY 0x0002
+#define PROFILE_FILE_NO_RELOAD 0x0004
/*
* This structure defines the high-level, user visible profile_t
struct profile_node *current_section;
};
+static const char *default_filename = "<default>";
+
static profile_syntax_err_cb_t syntax_err_cb;
static errcode_t parse_line(char *line, struct parse_state *state);
* object.
*/
-static int compstr(const void *m1, const void *m2)
+static int compstr(const void *m1, const void *m2)
{
const char *s1 = *((const char * const *) m1);
const char *s2 = *((const char * const *) m2);
- return strcmp(s1, s2);
+ return strcmp(s1, s2);
}
static void free_list(char **list)
if (list == 0)
return;
-
+
for (cp = list; *cp; cp++)
free(*cp);
free(list);
return retval;
}
-errcode_t
+errcode_t
profile_init(const char **files, profile_t *ret_profile)
{
const char **fs;
*last = new_file;
last = &new_file->next;
}
- } else if (retval != ENOTDIR)
+ } else if ((retval != ENOTDIR) &&
+ strcmp(*fs, default_filename))
goto errout;
retval = profile_open_file(*fs, &new_file);
return retval;
}
-void
+void
profile_release(profile_t profile)
{
prf_file_t p, next;
free(profile);
}
+/*
+ * This function sets the value of the pseudo file "<default>". If
+ * the file "<default>" had previously been passed to profile_init(),
+ * then def_string parameter will be parsed and used as the profile
+ * information for the "<default>" file.
+ */
+errcode_t profile_set_default(profile_t profile, const char *def_string)
+{
+ struct parse_state state;
+ prf_file_t prf;
+ errcode_t retval;
+ const char *in;
+ char *line, *p, *end;
+ int line_size, len;
+
+ if (!def_string || !profile || profile->magic != PROF_MAGIC_PROFILE)
+ return PROF_MAGIC_PROFILE;
+
+ for (prf = profile->first_file; prf; prf = prf->next) {
+ if (strcmp(prf->filespec, default_filename) == 0)
+ break;
+ }
+ if (!prf)
+ return 0;
+
+ if (prf->root) {
+ profile_free_node(prf->root);
+ prf->root = 0;
+ }
+
+ memset(&state, 0, sizeof(struct parse_state));
+ retval = profile_create_node("(root)", 0, &state.root_section);
+ if (retval)
+ return retval;
+
+ line = 0;
+ line_size = 0;
+ in = def_string;
+ while (*in) {
+ end = strchr(in, '\n');
+ len = end ? (end - in) : (int) strlen(in);
+ if (len >= line_size) {
+ line_size = len+1;
+ p = realloc(line, line_size);
+ if (!p) {
+ retval = ENOMEM;
+ goto errout;
+ }
+ line = p;
+ }
+ memcpy(line, in, len);
+ line[len] = 0;
+ retval = parse_line(line, &state);
+ if (retval) {
+ errout:
+ if (syntax_err_cb)
+ (syntax_err_cb)(prf->filespec, retval,
+ state.line_num);
+ free(line);
+ if (prf->root)
+ profile_free_node(prf->root);
+ return retval;
+ }
+ if (!end)
+ break;
+ in = end+1;
+ }
+ prf->root = state.root_section;
+ free(line);
+
+ return 0;
+}
/*
* prof_file.c ---- routines that manipulate an individual profile file.
}
expanded_filename = malloc(len);
if (expanded_filename == 0) {
- profile_free_file(prf);
+ profile_free_file(prf);
return errno;
}
if (home_env) {
prf->filespec = expanded_filename;
- retval = profile_update_file(prf);
- if (retval) {
- profile_free_file(prf);
- return retval;
+ if (strcmp(prf->filespec, default_filename) != 0) {
+ retval = profile_update_file(prf);
+ if (retval) {
+ profile_free_file(prf);
+ return retval;
+ }
}
*ret_prof = prf;
char buf[2048];
struct parse_state state;
+ if (prf->flags & PROFILE_FILE_NO_RELOAD)
+ return 0;
+
#ifdef HAVE_STAT
#ifdef STAT_ONCE_PER_SECOND
now = time(0);
retval = parse_line(buf, &state);
if (retval) {
if (syntax_err_cb)
- (syntax_err_cb)(prf->filespec, retval,
+ (syntax_err_cb)(prf->filespec, retval,
state.line_num);
fclose(f);
return retval;
{
if (prf->root)
profile_free_node(prf->root);
- if (prf->filespec)
- free(prf->filespec);
+ free(prf->filespec);
free(prf);
}
struct profile_node *node;
int do_subsection = 0;
void *iter = 0;
-
+
state->line_num++;
if (state->state == STATE_GET_OBRACE) {
cp = skip_over_blanks(line);
if (*cp == 0)
return PROF_SECTION_SYNTAX;
}
- retval = profile_find_node(state->root_section, cp, 0, 1,
+ retval = profile_find_node(state->root_section, cp, 0, 1,
&iter, &state->current_section);
if (retval == PROF_NO_SECTION) {
retval = profile_add_node(state->root_section,
cp++;
}
/*
- * Spaces or comments after ']' should not be fatal
+ * Spaces or comments after ']' should not be fatal
*/
cp = skip_over_blanks(cp);
if (!end_or_comment(*cp))
struct profile_node *p;
void *iter;
long retval;
-
+
iter = 0;
do {
retval = profile_find_node(root, 0, 0, 0, &iter, &p);
/*
* prof_tree.c --- these routines maintain the parse tree of the
* config file.
- *
+ *
* All of the details of how the tree is stored is abstracted away in
* this file; all of the other profile routines build, access, and
* modify the tree via the accessor functions found in this file.
*
* Each node may represent either a relation or a section header.
- *
+ *
* A section header must have its value field set to 0, and may a one
* or more child nodes, pointed to by first_child.
- *
+ *
* A relation has as its value a pointer to allocated memory
* containing a string. Its first_child pointer must be null.
*
if (node->magic != PROF_MAGIC_NODE)
return;
-
- if (node->name)
- free(node->name);
- if (node->value)
- free(node->value);
+
+ free(node->name);
+ free(node->value);
for (child=node->first_child; child; child = next) {
next = child->next;
profile_free_node(child);
}
node->magic = 0;
-
+
free(node);
}
/*
* Find the place to insert the new node. We look for the
- * place *after* the last match of the node name, since
+ * place *after* the last match of the node name, since
* order matters.
*/
for (p=section->first_child, last = 0; p; last = p, p = p->next) {
* section which matches the name; don't return relations. If value
* is non-NULL, then only return relations which match the requested
* value. (The value argument is ignored if section_flag is non-zero.)
- *
+ *
* The first time this routine is called, the state pointer must be
* null. When this profile_find_node_relation() returns, if the state
* pointer is non-NULL, then this routine should be called again.
CHECK_MAGIC(p);
} else
p = section->first_child;
-
+
for (; p; p = p->next) {
if (name && (strcmp(p->name, name)))
continue;
/*
* This is a general-purpose iterator for returning all nodes that
- * match the specified name array.
+ * match the specified name array.
*/
struct profile_iterator {
prf_magic_t magic;
int num;
};
-errcode_t
+errcode_t
profile_iterator_create(profile_t profile, const char *const *names, int flags,
void **ret_iter)
{
* If the file has changed, then the node pointer is invalid,
* so we'll have search the file again looking for it.
*/
- if (iter->node && (iter->file->upd_serial != iter->file_serial)) {
+ if (iter->node && (iter->file &&
+ iter->file->upd_serial != iter->file_serial)) {
iter->flags &= ~PROFILE_ITER_FINAL_SEEN;
skip_num = iter->num;
iter->node = 0;
iter->num++;
if (!p) {
iter->file = iter->file->next;
- if (iter->file) {
- }
iter->node = 0;
skip_num = 0;
goto get_new_file;
*ret_value = value;
else
retval = PROF_NO_RELATION;
-
+
cleanup:
profile_iterator_free(&state);
return retval;
}
-errcode_t
+errcode_t
profile_get_string(profile_t profile, const char *name, const char *subname,
const char *subsubname, const char *def_val,
char **ret_string)
errcode_t retval;
if (profile) {
- retval = profile_get_value(profile, name, subname,
+ retval = profile_get_value(profile, name, subname,
subsubname, &value);
if (retval == PROF_NO_SECTION || retval == PROF_NO_RELATION)
value = def_val;
return retval;
} else
value = def_val;
-
+
if (value) {
*ret_string = malloc(strlen(value)+1);
if (*ret_string == 0)
return 0;
}
-errcode_t
+errcode_t
profile_get_integer(profile_t profile, const char *name, const char *subname,
const char *subsubname, int def_val, int *ret_int)
{
/* Garbage in string. */
if (end_value != value + strlen (value))
return PROF_BAD_INTEGER;
-
-
+
+
+ *ret_int = ret_long;
+ return 0;
+}
+
+errcode_t
+profile_get_uint(profile_t profile, const char *name, const char *subname,
+ const char *subsubname, unsigned int def_val,
+ unsigned int *ret_int)
+{
+ const char *value;
+ errcode_t retval;
+ char *end_value;
+ unsigned long ret_long;
+
+ *ret_int = def_val;
+ if (profile == 0)
+ return 0;
+
+ retval = profile_get_value(profile, name, subname, subsubname, &value);
+ if (retval == PROF_NO_SECTION || retval == PROF_NO_RELATION) {
+ *ret_int = def_val;
+ return 0;
+ } else if (retval)
+ return retval;
+
+ if (value[0] == 0)
+ /* Empty string is no good. */
+ return PROF_BAD_INTEGER;
+ errno = 0;
+ ret_long = strtoul (value, &end_value, 10);
+
+ /* Overflow or underflow. */
+ if ((ret_long == ULONG_MAX) && errno != 0)
+ return PROF_BAD_INTEGER;
+ /* Value outside "int" range. */
+ if ((unsigned long) (unsigned int) ret_long != ret_long)
+ return PROF_BAD_INTEGER;
+ /* Garbage in string. */
+ if (end_value != value + strlen (value))
+ return PROF_BAD_INTEGER;
+
*ret_int = ret_long;
return 0;
}
profile_parse_boolean(const char *s, int *ret_boolean)
{
const char *const *p;
-
+
if (ret_boolean == NULL)
return PROF_EINVAL;
return 0;
}
}
-
+
return PROF_BAD_BOOLEAN;
}
-errcode_t
+errcode_t
profile_get_boolean(profile_t profile, const char *name, const char *subname,
const char *subsubname, int def_val, int *ret_boolean)
{
return 0;
} else if (retval)
return retval;
-
+
return profile_parse_boolean (value, ret_boolean);
}
-errcode_t
+errcode_t
profile_iterator(void **iter_p, char **ret_name, char **ret_value)
{
char *name, *value;
errcode_t retval;
-
+
retval = profile_node_iterator(iter_p, 0, &name, &value);
if (retval)
return retval;
if (subname)
subsubname = names[2];
if (subsubname && names[3]) {
- fprintf(stderr,
+ fprintf(stderr,
"Only 3 levels are allowed with query1\n");
retval = EINVAL;
} else
- retval = profile_get_value(profile, name, subname,
+ retval = profile_get_value(profile, name, subname,
subsubname, &value);
print_status = PRINT_VALUE;
} else if (!strcmp(cmd, "list_sections")) {
- retval = profile_get_subsection_names(profile, names,
+ retval = profile_get_subsection_names(profile, names,
&values);
print_status = PRINT_VALUES;
} else if (!strcmp(cmd, "list_relations")) {
- retval = profile_get_relation_names(profile, names,
+ retval = profile_get_relation_names(profile, names,
&values);
print_status = PRINT_VALUES;
} else if (!strcmp(cmd, "dump")) {
}
profile_release(profile);
exit(0);
-
+
}
void syntax_err_report(const char *filename, long err, int line_num)
exit(1);
}
+const char *default_str = "[foo]\n\tbar=quux\n\tsub = {\n\t\twin = true\n}\n";
+
int main(int argc, char **argv)
{
profile_t profile;
long retval;
char *cmd;
-
+
if (argc < 2) {
fprintf(stderr, "Usage: %s filename [cmd argset]\n", program_name);
exit(1);
initialize_prof_error_table();
profile_set_syntax_err_cb(syntax_err_report);
-
+
retval = profile_init_path(argv[1], &profile);
if (retval) {
com_err(program_name, retval, "while initializing profile");
exit(1);
}
+ retval = profile_set_default(profile, default_str);
+ if (retval) {
+ com_err(program_name, retval, "while setting default");
+ exit(1);
+ }
+
cmd = *(argv+2);
if (!cmd || !strcmp(cmd, "batch"))
do_batchmode(profile);
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff