1 |
lefcha |
1.1 |
#include <stdio.h> |
2 |
lefcha |
1.28 |
#include <unistd.h> |
3 |
lefcha |
1.1 |
#include <errno.h> |
4 |
lefcha |
1.5 |
#include <sys/types.h> |
5 |
lefcha |
1.1 |
#include <regex.h> |
6 |
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#include <string.h> |
7 |
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#include <stdlib.h> |
8 |
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#include <limits.h> |
9 |
lefcha |
1.10 |
#include <sys/stat.h> |
10 |
lefcha |
1.28 |
#include <fcntl.h> |
11 |
lefcha |
1.1 |
|
12 |
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#include "config.h" |
13 |
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#include "imapfilter.h" |
14 |
lefcha |
1.13 |
#include "data.h" |
15 |
lefcha |
1.1 |
|
16 |
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|
17 |
lefcha |
1.6 |
extern char logfile[PATH_MAX]; |
18 |
lefcha |
1.11 |
extern unsigned int options; |
19 |
lefcha |
1.28 |
extern long timeout; |
20 |
lefcha |
1.8 |
|
21 |
lefcha |
1.28 |
|
22 |
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/* |
23 |
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* Create $HOME/.imapfilter directory. |
24 |
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*/ |
25 |
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int create_homedir(void) |
26 |
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{ |
27 |
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char *hdname = ".imapfilter"; |
28 |
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char *home = NULL; |
29 |
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30 |
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home = getenv("HOME"); |
31 |
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32 |
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if (home) |
33 |
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if (chdir(home)) |
34 |
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error("imapfilter: could not change directory; %s\n", |
35 |
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strerror(errno)); |
36 |
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37 |
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create_dir(hdname, S_IRUSR | S_IWUSR | S_IXUSR); |
38 |
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39 |
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return 0; |
40 |
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} |
41 |
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42 |
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43 |
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/* |
44 |
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* Create a file. |
45 |
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*/ |
46 |
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int create_file(char *fname, mode_t mode) |
47 |
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{ |
48 |
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int fd; |
49 |
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struct stat fs; |
50 |
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51 |
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if (access(fname, F_OK)) { |
52 |
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fd = creat(fname, mode); |
53 |
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if (fd == -1) { |
54 |
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error("imapfilter: could not create file %s; %s\n", fname, |
55 |
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strerror(errno)); |
56 |
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return ERROR_FILE_OPEN; |
57 |
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} |
58 |
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close(fd); |
59 |
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} else { |
60 |
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stat(fname, &fs); |
61 |
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if (!S_ISREG(fs.st_mode)) { |
62 |
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error("imapfilter: file %s not a regular file\n", fname); |
63 |
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return ERROR_FILE_OPEN; |
64 |
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} |
65 |
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} |
66 |
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67 |
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return 0; |
68 |
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} |
69 |
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70 |
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71 |
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/* |
72 |
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* Create a directory. |
73 |
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*/ |
74 |
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int create_dir(char *dname, mode_t mode) |
75 |
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{ |
76 |
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struct stat ds; |
77 |
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78 |
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if (access(dname, F_OK)) { |
79 |
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if (mkdir(dname, mode)) |
80 |
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error("imapfilter: could not create directory %s; %s\n", dname, |
81 |
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strerror(errno)); |
82 |
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} else { |
83 |
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stat(dname, &ds); |
84 |
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if (!S_ISDIR(ds.st_mode)) |
85 |
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error("imapfilter: file %s not a directory\n", dname); |
86 |
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} |
87 |
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88 |
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return 0; |
89 |
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} |
90 |
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91 |
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92 |
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#ifdef CHECK_PERMISSIONS |
93 |
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/* |
94 |
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* Check the permissions of a file. |
95 |
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*/ |
96 |
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int check_file_perms(char *fname, mode_t mode) |
97 |
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{ |
98 |
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struct stat fs; |
99 |
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100 |
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if (stat(fname, &fs)) { |
101 |
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error("imapfilter: getting file %s status; %s\n", fname, |
102 |
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strerror(errno)); |
103 |
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return ERROR_TRIVIAL; |
104 |
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} |
105 |
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if (!S_ISREG(fs.st_mode)) { |
106 |
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error("imapfilter: file %s not a regular file\n", fname); |
107 |
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return ERROR_TRIVIAL; |
108 |
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} |
109 |
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if ((fs.st_mode & 00777) != mode) { |
110 |
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error("imapfilter: warning: improper file %s permissions\n" |
111 |
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"imapfilter: warning: file's mode should be %o not %o\n", |
112 |
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fname, mode, fs.st_mode & 00777); |
113 |
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return ERROR_TRIVIAL; |
114 |
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} |
115 |
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116 |
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return 0; |
117 |
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} |
118 |
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119 |
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120 |
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/* |
121 |
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* Check the permissions of a directory. |
122 |
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*/ |
123 |
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int check_dir_perms(char *dname, mode_t mode) |
124 |
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{ |
125 |
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struct stat ds; |
126 |
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127 |
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if(stat(dname, &ds)) { |
128 |
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error("imapfilter: getting file %s status; %s\n", dname, |
129 |
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strerror(errno)); |
130 |
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return ERROR_TRIVIAL; |
131 |
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} |
132 |
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if (!S_ISDIR(ds.st_mode)) { |
133 |
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error("imapfilter: file %s not a directory\n", dname); |
134 |
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return ERROR_TRIVIAL; |
135 |
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} |
136 |
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if ((ds.st_mode & 00777) != mode) { |
137 |
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error("imapfilter: warning: improper dir %s permissions\n" |
138 |
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"imapfilter: warning: file's mode should be %o not %o\n", |
139 |
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dname, mode, ds.st_mode & 00777); |
140 |
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return ERROR_TRIVIAL; |
141 |
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} |
142 |
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143 |
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return 0; |
144 |
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} |
145 |
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#endif |
146 |
lefcha |
1.27 |
|
147 |
lefcha |
1.1 |
|
148 |
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/* |
149 |
lefcha |
1.13 |
* Find the path to configuration file, open it and call parse_config(). |
150 |
lefcha |
1.1 |
*/ |
151 |
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int read_config(char *cfg) |
152 |
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{ |
153 |
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int r; |
154 |
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FILE *fp; |
155 |
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char *home = NULL; |
156 |
lefcha |
1.23 |
char *c = NULL; |
157 |
lefcha |
1.24 |
|
158 |
lefcha |
1.1 |
if (!cfg) { |
159 |
lefcha |
1.23 |
cfg = c = (char *) xmalloc(PATH_MAX * sizeof(char)); |
160 |
lefcha |
1.8 |
|
161 |
lefcha |
1.1 |
home = getenv("HOME"); |
162 |
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163 |
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snprintf(cfg, PATH_MAX, "%s/%s", home, ".imapfilterrc"); |
164 |
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} |
165 |
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#ifdef DEBUG |
166 |
lefcha |
1.11 |
printf("debug: configuration file: '%s'\n", cfg); |
167 |
lefcha |
1.1 |
#endif |
168 |
lefcha |
1.13 |
#ifdef CHECK_PERMISSIONS |
169 |
lefcha |
1.28 |
check_file_perms(cfg, S_IRUSR | S_IWUSR); |
170 |
lefcha |
1.12 |
#endif |
171 |
lefcha |
1.1 |
fp = fopen(cfg, "r"); |
172 |
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173 |
lefcha |
1.17 |
if (!fp) |
174 |
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fatal(ERROR_FILE_OPEN, "imapfilter: opening config file %s; %s\n", |
175 |
lefcha |
1.11 |
cfg, strerror(errno)); |
176 |
lefcha |
1.1 |
|
177 |
lefcha |
1.23 |
if (c) |
178 |
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free(c); |
179 |
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180 |
lefcha |
1.17 |
if ((r = parse_config(fp))) |
181 |
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fatal(ERROR_CONFIG_PARSE, |
182 |
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"imapfilter: parse error in config file at row %d\n", r); |
183 |
lefcha |
1.1 |
|
184 |
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fclose(fp); |
185 |
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186 |
lefcha |
1.11 |
#ifdef DEBUG |
187 |
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printf("debug: options: %0#10x\n", options); |
188 |
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#endif |
189 |
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190 |
lefcha |
1.17 |
return 0; |
191 |
lefcha |
1.1 |
} |
192 |
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|
193 |
lefcha |
1.6 |
|
194 |
lefcha |
1.10 |
/* |
195 |
lefcha |
1.13 |
* Parse configuration file. |
196 |
lefcha |
1.1 |
*/ |
197 |
|
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int parse_config(FILE * fp) |
198 |
|
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{ |
199 |
lefcha |
1.17 |
int i, r = 0; |
200 |
lefcha |
1.1 |
unsigned int row = 0; |
201 |
|
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char line[LINE_MAX]; |
202 |
lefcha |
1.27 |
regex_t creg[13]; |
203 |
lefcha |
1.28 |
regmatch_t match[8]; |
204 |
lefcha |
1.27 |
const char *reg[13] = { |
205 |
lefcha |
1.15 |
"^([[:blank:]]*\n|#.*\n)$", |
206 |
lefcha |
1.25 |
#ifndef SSL_TLS |
207 |
lefcha |
1.28 |
"^[[:blank:]]*ACCOUNT[[:blank:]]+(([[:graph:]]+):([[:graph:]]*)|([[:graph:]]+))@([[:alnum:].-]+)(:[[:digit:]]+)?[[:blank:]]*\n$", |
208 |
lefcha |
1.25 |
#else |
209 |
lefcha |
1.28 |
"^[[:blank:]]*ACCOUNT[[:blank:]]+(([[:graph:]]+):([[:graph:]]*)|([[:graph:]]+))@([[:alnum:].-]+)(:[[:digit:]]+)?[[:blank:]]*([[:blank:]]SSL|[[:blank:]]SSL2|[[:blank:]]SSL3|[[:blank:]]TLS1)?[[:blank:]]*\n$", |
210 |
lefcha |
1.25 |
#endif |
211 |
lefcha |
1.13 |
"^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+([[:graph:]]+)[[:blank:]]*\n$", |
212 |
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"^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$", |
213 |
lefcha |
1.17 |
"^[[:blank:]]*ACTION[[:blank:]]+(DELETE|COPY[[:blank:]]+([[:graph:]]+)|MOVE[[:blank:]]+([[:graph:]]+)|LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$", |
214 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$", |
215 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
216 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
217 |
lefcha |
1.26 |
"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(LARGER|SMALLER|OLDER|NEWER)[[:blank:]]+([[:digit:]]+)[[:blank:]]*\n$", |
218 |
lefcha |
1.13 |
"^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]*\n$", |
219 |
lefcha |
1.26 |
"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(LOGFILE)[[:blank:]]*=[[:blank:]]*([[:print:]]+)\n$", |
220 |
lefcha |
1.28 |
"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(HEADERS|NAMESPACE)[[:blank:]]*=[[:blank:]]*(YES|NO)[[:blank:]]*\n$", |
221 |
lefcha |
1.27 |
"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(TIMEOUT)[[:blank:]]*=[[:blank:]]*(-?[[:digit:]]+)\n$" |
222 |
lefcha |
1.1 |
}; |
223 |
|
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|
224 |
lefcha |
1.27 |
for (i = 0; i < 13; i++) |
225 |
lefcha |
1.14 |
regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE); |
226 |
lefcha |
1.1 |
|
227 |
|
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while (fgets(line, LINE_MAX - 1, fp)) { |
228 |
|
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row++; |
229 |
lefcha |
1.15 |
if (!regexec(&creg[0], line, 0, match, 0)) |
230 |
|
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continue; |
231 |
lefcha |
1.26 |
#ifndef SSL_TLS |
232 |
lefcha |
1.28 |
else if (!regexec(&creg[1], line, 7, match, 0)) |
233 |
lefcha |
1.25 |
#else |
234 |
lefcha |
1.28 |
else if (!regexec(&creg[1], line, 8, match, 0)) |
235 |
lefcha |
1.25 |
#endif |
236 |
lefcha |
1.13 |
set_account(line, match); |
237 |
lefcha |
1.15 |
else if (!regexec(&creg[2], line, 3, match, 0)) |
238 |
lefcha |
1.17 |
r = set_mboxgrp(line, match); |
239 |
lefcha |
1.15 |
else if (!regexec(&creg[3], line, 3, match, 0)) |
240 |
lefcha |
1.17 |
r = set_filter(line, match); |
241 |
|
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else if (!regexec(&creg[4], line, 5, match, 0)) |
242 |
|
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r = set_action(line, match); |
243 |
lefcha |
1.15 |
else if (!regexec(&creg[5], line, 7, match, 0) || |
244 |
lefcha |
1.18 |
!regexec(&creg[6], line, 7, match, 0) || |
245 |
|
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!regexec(&creg[7], line, 7, match, 0) || |
246 |
|
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!regexec(&creg[8], line, 7, match, 0)) |
247 |
lefcha |
1.17 |
r = set_mask(line, match); |
248 |
lefcha |
1.15 |
else if (!regexec(&creg[9], line, 3, match, 0)) |
249 |
lefcha |
1.17 |
r = set_job(line, match); |
250 |
lefcha |
1.26 |
else if (!regexec(&creg[10], line, 4, match, 0) || |
251 |
lefcha |
1.27 |
!regexec(&creg[11], line, 4, match, 0) || |
252 |
|
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!regexec(&creg[12], line, 4, match, 0)) |
253 |
lefcha |
1.15 |
set_options(line, match); |
254 |
lefcha |
1.17 |
else |
255 |
lefcha |
1.18 |
return row; |
256 |
|
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|
257 |
lefcha |
1.17 |
if (r == ERROR_CONFIG_PARSE) |
258 |
|
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return row; |
259 |
lefcha |
1.1 |
} |
260 |
lefcha |
1.3 |
|
261 |
lefcha |
1.27 |
for (i = 0; i < 13; i++) |
262 |
lefcha |
1.12 |
regfree(&creg[i]); |
263 |
lefcha |
1.18 |
|
264 |
lefcha |
1.15 |
destroy_data(); |
265 |
lefcha |
1.6 |
|
266 |
lefcha |
1.8 |
return 0; |
267 |
lefcha |
1.1 |
} |
268 |
|
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|
269 |
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|
270 |
|
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/* |
271 |
lefcha |
1.13 |
* Set other options found in config file. |
272 |
lefcha |
1.11 |
*/ |
273 |
|
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void set_options(char *line, regmatch_t * match) |
274 |
|
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{ |
275 |
lefcha |
1.26 |
if (!strncasecmp(line + match[2].rm_so, "logfile", 7)) { |
276 |
lefcha |
1.19 |
if (!*logfile) |
277 |
lefcha |
1.26 |
strncat(logfile, line + match[3].rm_so, |
278 |
|
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min((match[3].rm_eo - match[3].rm_so), PATH_MAX - 1)); |
279 |
lefcha |
1.27 |
} else if (!strncasecmp(line + match[2].rm_so, "header", 6)) { |
280 |
lefcha |
1.26 |
if (!strncasecmp(line + match[3].rm_so, "yes", 3)) |
281 |
lefcha |
1.19 |
options |= OPTION_HEADERS; |
282 |
lefcha |
1.25 |
else |
283 |
|
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options &= ~(OPTION_HEADERS); |
284 |
lefcha |
1.28 |
} else if (!strncasecmp(line + match[2].rm_so, "namespace", 9)) { |
285 |
|
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if (!strncasecmp(line + match[3].rm_so, "yes", 3)) |
286 |
|
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options |= OPTION_NAMESPACE; |
287 |
|
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else |
288 |
|
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options &= ~(OPTION_NAMESPACE); |
289 |
lefcha |
1.27 |
} else if (!strncasecmp(line + match[2].rm_so, "timeout", 7)) { |
290 |
|
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errno = 0; |
291 |
|
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timeout = strtol(line + match[3].rm_so, NULL, 10); |
292 |
|
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if (errno) |
293 |
|
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timeout = 0; |
294 |
lefcha |
1.19 |
} |
295 |
lefcha |
1.1 |
} |