1 /* Copyright (C) 2005 Red Hat, Inc. */
2 
3 #ifndef _SEMANAGE_PARSE_UTILS_INTERNAL_H_
4 #define _SEMANAGE_PARSE_UTILS_INTERNAL_H_
5 
6 #include <stdio.h>
7 #include <semanage/handle.h>
8 
9 typedef struct parse_info {
10 	unsigned int lineno;	/* Current line number */
11 	char *orig_line;	/* Original copy of the line being parsed */
12 	char *working_copy;	/* Working copy of the line being parsed */
13 	char *ptr;		/* Current parsing location */
14 
15 	const char *filename;	/* Input stream file name */
16 	FILE *file_stream;	/* Input stream handle */
17 
18 	void *parse_arg;	/* Caller supplied argument */
19 } parse_info_t;
20 
21 /* Initialize structure */
22 extern int parse_init(semanage_handle_t * handle,
23 		      const char *filename,
24 		      void *parse_arg, parse_info_t ** info);
25 
26 /* Release structure */
27 extern void parse_release(parse_info_t * info);
28 
29 /* Open file */
30 extern int parse_open(semanage_handle_t * handle, parse_info_t * info);
31 
32 /* Close file */
33 extern void parse_close(parse_info_t * info);
34 
35 /* Release resources for current line */
36 extern void parse_dispose_line(parse_info_t * info);
37 
38 /* Skip all whitespace and comments */
39 extern int parse_skip_space(semanage_handle_t * handle, parse_info_t * info);
40 
41 /* Throw an error if we're at the EOF */
42 extern int parse_assert_noeof(semanage_handle_t * handle, parse_info_t * info);
43 
44 /* Throw an error if no whitespace follows,
45  * otherwise eat the whitespace */
46 extern int parse_assert_space(semanage_handle_t * handle, parse_info_t * info);
47 
48 /* Throw an error if the specified character
49  * does not follow, otherwise eat that character */
50 extern int parse_assert_ch(semanage_handle_t * handle,
51 			   parse_info_t * info, const char ch);
52 
53 /* Throw an error if the specified string
54  * does not follow is not found, otherwise
55  * eat the string */
56 extern int parse_assert_str(semanage_handle_t * handle,
57 			    parse_info_t * info, const char *assert_str);
58 
59 /* Eat the optional character, if found,
60  * or return STATUS_NODATA */
61 extern int parse_optional_ch(parse_info_t * info, const char ch);
62 
63 /* Eat the optional string, if found,
64  * or return STATUS_NODATA */
65 extern int parse_optional_str(parse_info_t * info, const char *str);
66 
67 /* Extract the next integer, and move
68  * the read pointer past it. Stop if
69  * the optional character delim is encountered,
70  * or if whitespace/eof is encountered */
71 int parse_fetch_int(semanage_handle_t * hgandle,
72 		    parse_info_t * info, int *num, char delim);
73 
74 /* Extract the next string (delimited by
75  * whitespace), and move the read pointer past it.
76  * Stop of the optional character delim is encountered,
77  * or if whitespace/eof is encountered. Fail if the
78  * string is of length 0. */
79 extern int parse_fetch_string(semanage_handle_t * handle,
80 			      parse_info_t * info, char **str_ptr, char delim);
81 
82 #endif
83