/[imapfilter]/imapfilter/file.c
ViewVC logotype

Contents of /imapfilter/file.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1.18 - (show annotations)
Tue Oct 2 07:31:52 2001 UTC (22 years, 6 months ago) by lefcha
Branch: MAIN
Changes since 1.17: +7 -11 lines
File MIME type: text/plain
Added safer xmalloc and xstrdup.

1 #include <stdio.h>
2 #include <errno.h>
3 #include <sys/types.h>
4 #include <regex.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <limits.h>
8 #include <sys/stat.h>
9
10 #include "config.h"
11 #include "imapfilter.h"
12 #include "data.h"
13
14
15 extern char logfile[PATH_MAX];
16 extern unsigned int options;
17
18
19 /*
20 * Find the path to configuration file, open it and call parse_config().
21 */
22 int read_config(char *cfg)
23 {
24 int r;
25 FILE *fp;
26 char *home = NULL;
27
28 if (!cfg) {
29 cfg = (char *) xmalloc(PATH_MAX * sizeof(char));
30
31 home = getenv("HOME");
32
33 snprintf(cfg, PATH_MAX, "%s/%s", home, ".imapfilterrc");
34 }
35 #ifdef DEBUG
36 printf("debug: configuration file: '%s'\n", cfg);
37 #endif
38 #ifdef CHECK_PERMISSIONS
39 check_permissions(cfg);
40 #endif
41 fp = fopen(cfg, "r");
42
43 if (!fp)
44 fatal(ERROR_FILE_OPEN, "imapfilter: opening config file %s; %s\n",
45 cfg, strerror(errno));
46
47 if ((r = parse_config(fp)))
48 fatal(ERROR_CONFIG_PARSE,
49 "imapfilter: parse error in config file at row %d\n", r);
50
51 fclose(fp);
52
53 #ifdef DEBUG
54 printf("debug: options: %0#10x\n", options);
55 #endif
56
57 return 0;
58 }
59
60
61 #ifdef CHECK_PERMISSIONS
62 /*
63 * Check the permissions of the configuration file.
64 */
65 int check_permissions(char *cfg)
66 {
67 struct stat fs;
68
69 if (stat(cfg, &fs)) {
70 error("imapfilter: getting file %s status; %s\n", cfg,
71 strerror(errno));
72 return ERROR_TRIVIAL;
73 }
74 if (!S_ISREG(fs.st_mode)) {
75 error("imapfilter: file %s not a regular file\n", cfg);
76 return ERROR_TRIVIAL;
77 }
78 if ((fs.st_mode & 00777) != (S_IRUSR | S_IWUSR)) {
79 error("imapfilter: warning: improper config file %s permissions\n"
80 "imapfilter: warning: file's mode should be 600 not %o\n",
81 cfg, fs.st_mode & 00777);
82 return ERROR_TRIVIAL;
83 }
84 return 0;
85 }
86 #endif
87
88 /*
89 * Parse configuration file.
90 */
91 int parse_config(FILE * fp)
92 {
93 int i, r = 0;
94 unsigned int row = 0;
95 char line[LINE_MAX];
96 regex_t creg[11];
97 regmatch_t match[7];
98 const char *reg[11] = {
99 "^([[:blank:]]*\n|#.*\n)$",
100 "^[[:blank:]]*ACCOUNT[[:blank:]]+([[:graph:]]*):([[:graph:]]*)@([[:alnum:].-]+)(:[[:digit:]]{1,5})?[[:blank:]]*\n$",
101 "^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+([[:graph:]]+)[[:blank:]]*\n$",
102 "^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$",
103 "^[[:blank:]]*ACTION[[:blank:]]+(DELETE|COPY[[:blank:]]+([[:graph:]]+)|MOVE[[:blank:]]+([[:graph:]]+)|LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$",
104 "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$",
105 "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$",
106 "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$",
107 "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(LARGER|SMALLER)[[:blank:]]+([[:digit:]]+)[[:blank:]]*\n$",
108 "^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]*\n$",
109 "^[[:blank:]]*LOGFILE[[:blank:]]*=[[:blank:]]*([[:print:]]+)\n$"
110 };
111
112 for (i = 0; i < 11; i++)
113 regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE);
114
115 while (fgets(line, LINE_MAX - 1, fp)) {
116 row++;
117 if (!regexec(&creg[0], line, 0, match, 0))
118 continue;
119 else if (!regexec(&creg[1], line, 6, match, 0))
120 set_account(line, match);
121 else if (!regexec(&creg[2], line, 3, match, 0))
122 r = set_mboxgrp(line, match);
123 else if (!regexec(&creg[3], line, 3, match, 0))
124 r = set_filter(line, match);
125 else if (!regexec(&creg[4], line, 5, match, 0))
126 r = set_action(line, match);
127 else if (!regexec(&creg[5], line, 7, match, 0) ||
128 !regexec(&creg[6], line, 7, match, 0) ||
129 !regexec(&creg[7], line, 7, match, 0) ||
130 !regexec(&creg[8], line, 7, match, 0))
131 r = set_mask(line, match);
132 else if (!regexec(&creg[9], line, 3, match, 0))
133 r = set_job(line, match);
134 else if (!regexec(&creg[10], line, 2, match, 0))
135 set_options(line, match);
136 else
137 return row;
138
139 if (r == ERROR_CONFIG_PARSE)
140 return row;
141 }
142
143 for (i = 0; i < 11; i++)
144 regfree(&creg[i]);
145
146 destroy_data();
147
148 return 0;
149 }
150
151
152 /*
153 * Set other options found in config file.
154 */
155 void set_options(char *line, regmatch_t * match)
156 {
157 if (!*logfile)
158 strncat(logfile, line + match[1].rm_so,
159 min((match[1].rm_eo - match[1].rm_so), PATH_MAX - 1));
160 }

webmaster@linux.gr
ViewVC Help
Powered by ViewVC 1.1.26