/[imapfilter]/imapfilter/file.c
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Annotation of /imapfilter/file.c

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Revision 1.22 - (hide annotations)
Sat Oct 6 13:16:28 2001 UTC (22 years, 5 months ago) by lefcha
Branch: MAIN
Changes since 1.21: +2 -1 lines
File MIME type: text/plain
Added a forgotten check.

1 lefcha 1.1 #include <stdio.h>
2     #include <errno.h>
3 lefcha 1.5 #include <sys/types.h>
4 lefcha 1.1 #include <regex.h>
5     #include <string.h>
6     #include <stdlib.h>
7     #include <limits.h>
8 lefcha 1.10 #include <sys/stat.h>
9 lefcha 1.1
10     #include "config.h"
11     #include "imapfilter.h"
12 lefcha 1.13 #include "data.h"
13 lefcha 1.1
14    
15 lefcha 1.6 extern char logfile[PATH_MAX];
16 lefcha 1.11 extern unsigned int options;
17 lefcha 1.8
18 lefcha 1.1
19     /*
20 lefcha 1.13 * Find the path to configuration file, open it and call parse_config().
21 lefcha 1.1 */
22     int read_config(char *cfg)
23     {
24     int r;
25     FILE *fp;
26     char *home = NULL;
27    
28     if (!cfg) {
29 lefcha 1.18 cfg = (char *) xmalloc(PATH_MAX * sizeof(char));
30 lefcha 1.8
31 lefcha 1.1 home = getenv("HOME");
32    
33     snprintf(cfg, PATH_MAX, "%s/%s", home, ".imapfilterrc");
34     }
35     #ifdef DEBUG
36 lefcha 1.11 printf("debug: configuration file: '%s'\n", cfg);
37 lefcha 1.1 #endif
38 lefcha 1.13 #ifdef CHECK_PERMISSIONS
39     check_permissions(cfg);
40 lefcha 1.12 #endif
41 lefcha 1.1 fp = fopen(cfg, "r");
42    
43 lefcha 1.17 if (!fp)
44     fatal(ERROR_FILE_OPEN, "imapfilter: opening config file %s; %s\n",
45 lefcha 1.11 cfg, strerror(errno));
46 lefcha 1.1
47 lefcha 1.17 if ((r = parse_config(fp)))
48     fatal(ERROR_CONFIG_PARSE,
49     "imapfilter: parse error in config file at row %d\n", r);
50 lefcha 1.1
51     fclose(fp);
52 lefcha 1.21
53 lefcha 1.22 if (!cfg)
54     free(cfg);
55 lefcha 1.1
56 lefcha 1.11 #ifdef DEBUG
57     printf("debug: options: %0#10x\n", options);
58     #endif
59    
60 lefcha 1.17 return 0;
61 lefcha 1.1 }
62    
63 lefcha 1.6
64 lefcha 1.13 #ifdef CHECK_PERMISSIONS
65 lefcha 1.1 /*
66 lefcha 1.13 * Check the permissions of the configuration file.
67 lefcha 1.10 */
68 lefcha 1.13 int check_permissions(char *cfg)
69 lefcha 1.10 {
70     struct stat fs;
71    
72     if (stat(cfg, &fs)) {
73 lefcha 1.11 error("imapfilter: getting file %s status; %s\n", cfg,
74     strerror(errno));
75 lefcha 1.17 return ERROR_TRIVIAL;
76 lefcha 1.10 }
77     if (!S_ISREG(fs.st_mode)) {
78 lefcha 1.11 error("imapfilter: file %s not a regular file\n", cfg);
79 lefcha 1.17 return ERROR_TRIVIAL;
80 lefcha 1.10 }
81     if ((fs.st_mode & 00777) != (S_IRUSR | S_IWUSR)) {
82 lefcha 1.17 error("imapfilter: warning: improper config file %s permissions\n"
83     "imapfilter: warning: file's mode should be 600 not %o\n",
84     cfg, fs.st_mode & 00777);
85     return ERROR_TRIVIAL;
86 lefcha 1.10 }
87     return 0;
88     }
89 lefcha 1.12 #endif
90 lefcha 1.10
91     /*
92 lefcha 1.13 * Parse configuration file.
93 lefcha 1.1 */
94     int parse_config(FILE * fp)
95     {
96 lefcha 1.17 int i, r = 0;
97 lefcha 1.1 unsigned int row = 0;
98     char line[LINE_MAX];
99 lefcha 1.19 regex_t creg[12];
100 lefcha 1.13 regmatch_t match[7];
101 lefcha 1.19 const char *reg[12] = {
102 lefcha 1.15 "^([[:blank:]]*\n|#.*\n)$",
103 lefcha 1.20 "^[[:blank:]]*ACCOUNT[[:blank:]]+([[:graph:]]*):([[:graph:]]*)@([[:alnum:].-]+)(:[[:digit:]]+)?[[:blank:]]*\n$",
104 lefcha 1.13 "^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+([[:graph:]]+)[[:blank:]]*\n$",
105     "^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$",
106 lefcha 1.17 "^[[:blank:]]*ACTION[[:blank:]]+(DELETE|COPY[[:blank:]]+([[:graph:]]+)|MOVE[[:blank:]]+([[:graph:]]+)|LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$",
107     "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$",
108     "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$",
109     "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$",
110 lefcha 1.13 "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(LARGER|SMALLER)[[:blank:]]+([[:digit:]]+)[[:blank:]]*\n$",
111     "^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]*\n$",
112 lefcha 1.19 "^[[:blank:]]*(LOGFILE)[[:blank:]]*=[[:blank:]]*([[:print:]]+)\n$",
113     "^[[:blank:]]*(HEADERS)[[:blank:]]*=[[:blank:]]*(YES|NO)[[:blank:]]*\n$"
114 lefcha 1.1 };
115    
116 lefcha 1.19 for (i = 0; i < 12; i++)
117 lefcha 1.14 regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE);
118 lefcha 1.1
119     while (fgets(line, LINE_MAX - 1, fp)) {
120     row++;
121 lefcha 1.15 if (!regexec(&creg[0], line, 0, match, 0))
122     continue;
123     else if (!regexec(&creg[1], line, 6, match, 0))
124 lefcha 1.13 set_account(line, match);
125 lefcha 1.15 else if (!regexec(&creg[2], line, 3, match, 0))
126 lefcha 1.17 r = set_mboxgrp(line, match);
127 lefcha 1.15 else if (!regexec(&creg[3], line, 3, match, 0))
128 lefcha 1.17 r = set_filter(line, match);
129     else if (!regexec(&creg[4], line, 5, match, 0))
130     r = set_action(line, match);
131 lefcha 1.15 else if (!regexec(&creg[5], line, 7, match, 0) ||
132 lefcha 1.18 !regexec(&creg[6], line, 7, match, 0) ||
133     !regexec(&creg[7], line, 7, match, 0) ||
134     !regexec(&creg[8], line, 7, match, 0))
135 lefcha 1.17 r = set_mask(line, match);
136 lefcha 1.15 else if (!regexec(&creg[9], line, 3, match, 0))
137 lefcha 1.17 r = set_job(line, match);
138 lefcha 1.19 else if (!regexec(&creg[10], line, 3, match, 0) ||
139     !regexec(&creg[11], line, 3, match, 0))
140 lefcha 1.15 set_options(line, match);
141 lefcha 1.17 else
142 lefcha 1.18 return row;
143    
144 lefcha 1.17 if (r == ERROR_CONFIG_PARSE)
145     return row;
146 lefcha 1.1 }
147 lefcha 1.3
148 lefcha 1.20 for (i = 0; i < 12; i++)
149 lefcha 1.12 regfree(&creg[i]);
150 lefcha 1.18
151 lefcha 1.15 destroy_data();
152 lefcha 1.6
153 lefcha 1.8 return 0;
154 lefcha 1.1 }
155    
156    
157     /*
158 lefcha 1.13 * Set other options found in config file.
159 lefcha 1.11 */
160     void set_options(char *line, regmatch_t * match)
161     {
162 lefcha 1.20 if (!strncasecmp(line + match[1].rm_so, "logfile", 7)) {
163 lefcha 1.19 if (!*logfile)
164     strncat(logfile, line + match[2].rm_so,
165     min((match[2].rm_eo - match[2].rm_so), PATH_MAX - 1));
166     } else {
167 lefcha 1.20 if (!strncasecmp(line + match[2].rm_so, "yes", 3))
168 lefcha 1.19 options |= OPTION_HEADERS;
169 lefcha 1.20 else if (options & OPTION_HEADERS)
170 lefcha 1.19 options ^= OPTION_HEADERS;
171     }
172 lefcha 1.1 }

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