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

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Revision 1.21 - (hide annotations)
Sat Oct 6 12:28:40 2001 UTC (22 years, 5 months ago) by lefcha
Branch: MAIN
Changes since 1.20: +2 -0 lines
File MIME type: text/plain
Fixed a memory leak.

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     free(cfg);
54 lefcha 1.1
55 lefcha 1.11 #ifdef DEBUG
56     printf("debug: options: %0#10x\n", options);
57     #endif
58    
59 lefcha 1.17 return 0;
60 lefcha 1.1 }
61    
62 lefcha 1.6
63 lefcha 1.13 #ifdef CHECK_PERMISSIONS
64 lefcha 1.1 /*
65 lefcha 1.13 * Check the permissions of the configuration file.
66 lefcha 1.10 */
67 lefcha 1.13 int check_permissions(char *cfg)
68 lefcha 1.10 {
69     struct stat fs;
70    
71     if (stat(cfg, &fs)) {
72 lefcha 1.11 error("imapfilter: getting file %s status; %s\n", cfg,
73     strerror(errno));
74 lefcha 1.17 return ERROR_TRIVIAL;
75 lefcha 1.10 }
76     if (!S_ISREG(fs.st_mode)) {
77 lefcha 1.11 error("imapfilter: file %s not a regular file\n", cfg);
78 lefcha 1.17 return ERROR_TRIVIAL;
79 lefcha 1.10 }
80     if ((fs.st_mode & 00777) != (S_IRUSR | S_IWUSR)) {
81 lefcha 1.17 error("imapfilter: warning: improper config file %s permissions\n"
82     "imapfilter: warning: file's mode should be 600 not %o\n",
83     cfg, fs.st_mode & 00777);
84     return ERROR_TRIVIAL;
85 lefcha 1.10 }
86     return 0;
87     }
88 lefcha 1.12 #endif
89 lefcha 1.10
90     /*
91 lefcha 1.13 * Parse configuration file.
92 lefcha 1.1 */
93     int parse_config(FILE * fp)
94     {
95 lefcha 1.17 int i, r = 0;
96 lefcha 1.1 unsigned int row = 0;
97     char line[LINE_MAX];
98 lefcha 1.19 regex_t creg[12];
99 lefcha 1.13 regmatch_t match[7];
100 lefcha 1.19 const char *reg[12] = {
101 lefcha 1.15 "^([[:blank:]]*\n|#.*\n)$",
102 lefcha 1.20 "^[[:blank:]]*ACCOUNT[[:blank:]]+([[:graph:]]*):([[:graph:]]*)@([[:alnum:].-]+)(:[[:digit:]]+)?[[:blank:]]*\n$",
103 lefcha 1.13 "^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+([[:graph:]]+)[[:blank:]]*\n$",
104     "^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$",
105 lefcha 1.17 "^[[:blank:]]*ACTION[[:blank:]]+(DELETE|COPY[[:blank:]]+([[:graph:]]+)|MOVE[[:blank:]]+([[:graph:]]+)|LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$",
106     "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$",
107     "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$",
108     "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$",
109 lefcha 1.13 "^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(LARGER|SMALLER)[[:blank:]]+([[:digit:]]+)[[:blank:]]*\n$",
110     "^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]*\n$",
111 lefcha 1.19 "^[[:blank:]]*(LOGFILE)[[:blank:]]*=[[:blank:]]*([[:print:]]+)\n$",
112     "^[[:blank:]]*(HEADERS)[[:blank:]]*=[[:blank:]]*(YES|NO)[[:blank:]]*\n$"
113 lefcha 1.1 };
114    
115 lefcha 1.19 for (i = 0; i < 12; i++)
116 lefcha 1.14 regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE);
117 lefcha 1.1
118     while (fgets(line, LINE_MAX - 1, fp)) {
119     row++;
120 lefcha 1.15 if (!regexec(&creg[0], line, 0, match, 0))
121     continue;
122     else if (!regexec(&creg[1], line, 6, match, 0))
123 lefcha 1.13 set_account(line, match);
124 lefcha 1.15 else if (!regexec(&creg[2], line, 3, match, 0))
125 lefcha 1.17 r = set_mboxgrp(line, match);
126 lefcha 1.15 else if (!regexec(&creg[3], line, 3, match, 0))
127 lefcha 1.17 r = set_filter(line, match);
128     else if (!regexec(&creg[4], line, 5, match, 0))
129     r = set_action(line, match);
130 lefcha 1.15 else if (!regexec(&creg[5], line, 7, match, 0) ||
131 lefcha 1.18 !regexec(&creg[6], line, 7, match, 0) ||
132     !regexec(&creg[7], line, 7, match, 0) ||
133     !regexec(&creg[8], line, 7, match, 0))
134 lefcha 1.17 r = set_mask(line, match);
135 lefcha 1.15 else if (!regexec(&creg[9], line, 3, match, 0))
136 lefcha 1.17 r = set_job(line, match);
137 lefcha 1.19 else if (!regexec(&creg[10], line, 3, match, 0) ||
138     !regexec(&creg[11], line, 3, match, 0))
139 lefcha 1.15 set_options(line, match);
140 lefcha 1.17 else
141 lefcha 1.18 return row;
142    
143 lefcha 1.17 if (r == ERROR_CONFIG_PARSE)
144     return row;
145 lefcha 1.1 }
146 lefcha 1.3
147 lefcha 1.20 for (i = 0; i < 12; i++)
148 lefcha 1.12 regfree(&creg[i]);
149 lefcha 1.18
150 lefcha 1.15 destroy_data();
151 lefcha 1.6
152 lefcha 1.8 return 0;
153 lefcha 1.1 }
154    
155    
156     /*
157 lefcha 1.13 * Set other options found in config file.
158 lefcha 1.11 */
159     void set_options(char *line, regmatch_t * match)
160     {
161 lefcha 1.20 if (!strncasecmp(line + match[1].rm_so, "logfile", 7)) {
162 lefcha 1.19 if (!*logfile)
163     strncat(logfile, line + match[2].rm_so,
164     min((match[2].rm_eo - match[2].rm_so), PATH_MAX - 1));
165     } else {
166 lefcha 1.20 if (!strncasecmp(line + match[2].rm_so, "yes", 3))
167 lefcha 1.19 options |= OPTION_HEADERS;
168 lefcha 1.20 else if (options & OPTION_HEADERS)
169 lefcha 1.19 options ^= OPTION_HEADERS;
170     }
171 lefcha 1.1 }

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