1 |
lefcha |
1.1 |
#include <stdio.h> |
2 |
lefcha |
1.3 |
#include <stdlib.h> |
3 |
lefcha |
1.1 |
#include <string.h> |
4 |
lefcha |
1.5 |
#include <strings.h> |
5 |
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#include <errno.h> |
6 |
lefcha |
1.1 |
#include <limits.h> |
7 |
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#include <sys/stat.h> |
8 |
lefcha |
1.14 |
#include <sys/types.h> /* For POSIX.1-2001 non-conformant systems. */ |
9 |
lefcha |
1.5 |
#include <regex.h> |
10 |
lefcha |
1.1 |
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11 |
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#include "config.h" |
12 |
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#include "imapfilter.h" |
13 |
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#include "pathnames.h" |
14 |
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15 |
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16 |
lefcha |
1.12 |
extern options_t opts; |
17 |
lefcha |
1.1 |
extern unsigned int flags; |
18 |
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extern char *home; |
19 |
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20 |
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#ifdef ENCRYPTED_PASSWORDS |
21 |
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char *passphr = NULL; /* Master password to access the passwords |
22 |
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* file. */ |
23 |
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#endif |
24 |
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25 |
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26 |
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int parse_config(FILE * fd); |
27 |
lefcha |
1.12 |
void set_options(char *line, regmatch_t * m); |
28 |
lefcha |
1.1 |
|
29 |
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int parse_passwords(FILE * fd); |
30 |
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31 |
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32 |
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/* |
33 |
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* Find the path to configuration file, open it and call parse_config(). |
34 |
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*/ |
35 |
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int |
36 |
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read_config(char *cfg) |
37 |
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{ |
38 |
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int r; |
39 |
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FILE *fd; |
40 |
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char *c; |
41 |
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42 |
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c = NULL; |
43 |
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44 |
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if (cfg == NULL) { |
45 |
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cfg = c = (char *)xmalloc(PATH_MAX * sizeof(char)); |
46 |
lefcha |
1.12 |
snprintf(cfg, PATH_MAX, "%s/%s", home, PATHNAME_CONFIG); |
47 |
lefcha |
1.1 |
} |
48 |
lefcha |
1.9 |
debug("configuration file: '%s'\n", cfg); |
49 |
lefcha |
1.8 |
|
50 |
lefcha |
1.10 |
check_file_perms(cfg, S_IRUSR | S_IWUSR); |
51 |
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52 |
lefcha |
1.1 |
fd = fopen(cfg, "r"); |
53 |
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if (fd == NULL) |
54 |
lefcha |
1.12 |
fatal(ERROR_FILEOPEN, "opening config file %s; %s\n", cfg, |
55 |
lefcha |
1.1 |
strerror(errno)); |
56 |
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57 |
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if (c != NULL) |
58 |
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xfree(c); |
59 |
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60 |
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if ((r = parse_config(fd))) |
61 |
lefcha |
1.12 |
fatal(ERROR_PARSER, |
62 |
lefcha |
1.1 |
"parse error in config file at row %d\n", r); |
63 |
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64 |
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fclose(fd); |
65 |
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66 |
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return 0; |
67 |
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} |
68 |
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69 |
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70 |
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/* |
71 |
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* Parse configuration file. |
72 |
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*/ |
73 |
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int |
74 |
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parse_config(FILE * fd) |
75 |
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{ |
76 |
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int i, r; |
77 |
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unsigned int row; |
78 |
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char line[LINE_MAX]; |
79 |
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regex_t creg[13]; |
80 |
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regmatch_t match[11]; |
81 |
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const char *reg[13] = { |
82 |
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"^([[:blank:]]*\n|#.*\n)$", |
83 |
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84 |
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"^[[:blank:]]*ACCOUNT[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
85 |
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"(([[:graph:]]+):([[:graph:]]*)|([[:graph:]]+))@" |
86 |
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"([[:alnum:].-]+)(:[[:digit:]]+)?[[:blank:]]*" |
87 |
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"([[:blank:]]SSL2|[[:blank:]]SSL3|[[:blank:]]TLS1)?" |
88 |
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"[[:blank:]]*\n$", |
89 |
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90 |
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"^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
91 |
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"([[:print:]]+)[[:blank:]]*\n$", |
92 |
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93 |
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"^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*" |
94 |
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"([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$", |
95 |
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96 |
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"^[[:blank:]]*ACTION[[:blank:]]+(DELETE|" |
97 |
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"COPY[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)|" |
98 |
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"MOVE[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)|" |
99 |
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"RCOPY[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
100 |
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"(\"[[:print:]]*\"|[[:graph:]]+)|" |
101 |
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"RMOVE[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
102 |
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"(\"[[:print:]]*\"|[[:graph:]]+)|" |
103 |
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"FLAG[[:blank:]]+(REPLACE|ADD|REMOVE)[[:blank:]]+" |
104 |
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"([[:alpha:],]+)|" |
105 |
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"LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$", |
106 |
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107 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
108 |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
109 |
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"(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|" |
110 |
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"UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$", |
111 |
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112 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
113 |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
114 |
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"(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+" |
115 |
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"(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
116 |
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117 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
118 |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
119 |
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"(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)" |
120 |
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"[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
121 |
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122 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
123 |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
124 |
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"(LARGER|SMALLER|OLDER|NEWER)[[:blank:]]+([[:digit:]]+)" |
125 |
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"[[:blank:]]*\n$", |
126 |
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127 |
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"^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+" |
128 |
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"([[:alnum:],_-]+)[[:blank:]]*\n$", |
129 |
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130 |
lefcha |
1.16 |
"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(LOGFILE|CHARSET|" |
131 |
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"_PROTOCOL)[[:blank:]]*=[[:blank:]]*(\"[[:print:]]*\"|" |
132 |
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"[[:graph:]]+)[[:blank:]]*\n$", |
133 |
lefcha |
1.1 |
|
134 |
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"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(ERRORS|EXPUNGE|" |
135 |
lefcha |
1.10 |
"HEADERS|NAMESPACE|PEEK|SUBSCRIBE)[[:blank:]]*=[[:blank:]]*" |
136 |
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"(YES|NO)[[:blank:]]*\n$", |
137 |
lefcha |
1.1 |
|
138 |
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"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(DAEMON|TIMEOUT)" |
139 |
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"[[:blank:]]*=[[:blank:]]*([[:digit:]]+)\n$" |
140 |
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}; |
141 |
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142 |
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r = row = 0; |
143 |
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144 |
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for (i = 0; i < 13; i++) |
145 |
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regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE); |
146 |
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147 |
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/* First process all the variables. This is done because some |
148 |
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* variables' arguments are used before the other commands are |
149 |
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* processed. */ |
150 |
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while (fgets(line, LINE_MAX - 1, fd)) |
151 |
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if (!regexec(&creg[10], line, 4, match, 0) || |
152 |
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!regexec(&creg[11], line, 4, match, 0) || |
153 |
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!regexec(&creg[12], line, 4, match, 0)) |
154 |
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set_options(line, match); |
155 |
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156 |
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/* Then rewind and process everything else. */ |
157 |
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fseek(fd, 0L, SEEK_SET); |
158 |
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while (fgets(line, LINE_MAX - 1, fd)) { |
159 |
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row++; |
160 |
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if (!regexec(&creg[0], line, 0, match, 0)) |
161 |
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continue; |
162 |
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else if (!regexec(&creg[1], line, 9, match, 0)) |
163 |
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set_account(line, match); |
164 |
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else if (!regexec(&creg[2], line, 3, match, 0)) |
165 |
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r = set_mboxgrp(line, match); |
166 |
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else if (!regexec(&creg[3], line, 3, match, 0)) |
167 |
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r = set_filter(line, match); |
168 |
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else if (!regexec(&creg[4], line, 11, match, 0)) |
169 |
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r = set_action(line, match); |
170 |
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else if (!regexec(&creg[5], line, 5, match, 0)) |
171 |
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r = set_mask(line, match, MASK_MATCH_1); |
172 |
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else if (!regexec(&creg[6], line, 6, match, 0)) |
173 |
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r = set_mask(line, match, MASK_MATCH_2); |
174 |
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else if (!regexec(&creg[7], line, 7, match, 0)) |
175 |
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r = set_mask(line, match, MASK_MATCH_3); |
176 |
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else if (!regexec(&creg[8], line, 6, match, 0)) |
177 |
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r = set_mask(line, match, MASK_MATCH_4); |
178 |
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else if (!regexec(&creg[9], line, 3, match, 0)) |
179 |
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r = set_job(line, match); |
180 |
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/* Skip variable processing. */ |
181 |
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else if (!regexec(&creg[10], line, 4, match, 0) || |
182 |
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!regexec(&creg[11], line, 4, match, 0) || |
183 |
lefcha |
1.15 |
!regexec(&creg[12], line, 4, match, 0)) |
184 |
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continue; |
185 |
lefcha |
1.1 |
else |
186 |
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return row; |
187 |
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188 |
lefcha |
1.12 |
if (r == ERROR_PARSER) |
189 |
lefcha |
1.1 |
return row; |
190 |
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} |
191 |
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192 |
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for (i = 0; i < 13; i++) |
193 |
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regfree(&creg[i]); |
194 |
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195 |
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destroy_unneeded(); |
196 |
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197 |
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return 0; |
198 |
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} |
199 |
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200 |
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201 |
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/* |
202 |
lefcha |
1.4 |
* Signal SIGUSR1 received, destroy all data structures and reread the |
203 |
lefcha |
1.1 |
* configuration file. |
204 |
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*/ |
205 |
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void |
206 |
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reread_config(char *cfg) |
207 |
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{ |
208 |
lefcha |
1.13 |
|
209 |
lefcha |
1.1 |
destroy_all(); |
210 |
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read_config(cfg); |
211 |
lefcha |
1.2 |
#ifdef ENCRYPTED_PASSWORDS |
212 |
lefcha |
1.1 |
read_passwords(); |
213 |
lefcha |
1.2 |
#endif |
214 |
lefcha |
1.12 |
flags &= ~(FLAG_SIGUSR1); |
215 |
lefcha |
1.1 |
} |
216 |
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217 |
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218 |
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/* |
219 |
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* Set other options found in config file. |
220 |
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*/ |
221 |
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void |
222 |
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set_options(char *line, regmatch_t * m) |
223 |
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{ |
224 |
lefcha |
1.13 |
|
225 |
lefcha |
1.1 |
if (!strncasecmp(line + m[2].rm_so, "logfile", 7)) { |
226 |
lefcha |
1.11 |
if (*opts.logfile == '\0') { |
227 |
lefcha |
1.1 |
if (*(line + m[3].rm_so) == '"' && |
228 |
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*(line + m[3].rm_eo - 1) == '"') |
229 |
lefcha |
1.11 |
strncat(opts.logfile, line + m[3].rm_so + 1, |
230 |
lefcha |
1.1 |
min((m[3].rm_eo - m[3].rm_so - 2), |
231 |
lefcha |
1.15 |
PATH_MAX - 1)); |
232 |
lefcha |
1.1 |
else |
233 |
lefcha |
1.11 |
strncat(opts.logfile, line + m[3].rm_so, |
234 |
lefcha |
1.1 |
min((m[3].rm_eo - m[3].rm_so), |
235 |
lefcha |
1.15 |
PATH_MAX - 1)); |
236 |
lefcha |
1.1 |
} |
237 |
lefcha |
1.17 |
debug("options: logfile = '%s'\n", opts.logfile); |
238 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "charset", 7)) { |
239 |
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if (*(line + m[3].rm_so) == '"' && |
240 |
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*(line + m[3].rm_eo - 1) == '"') |
241 |
lefcha |
1.11 |
strncat(opts.charset, line + m[3].rm_so + 1, |
242 |
lefcha |
1.1 |
min((m[3].rm_eo - m[3].rm_so - 2), |
243 |
lefcha |
1.15 |
CHARSET_LEN - 1)); |
244 |
lefcha |
1.1 |
else |
245 |
lefcha |
1.11 |
strncat(opts.charset, line + m[3].rm_so, |
246 |
lefcha |
1.1 |
min((m[3].rm_eo - m[3].rm_so), CHARSET_LEN - 1)); |
247 |
lefcha |
1.17 |
debug("options: charset = '%s'\n", opts.charset); |
248 |
lefcha |
1.16 |
} else if (!strncasecmp(line + m[2].rm_so, "_protocol", 8)) { |
249 |
|
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if (strcasestr(line + m[3].rm_so, "IMAP4rev1")) |
250 |
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opts.force_protocol = PROTOCOL_IMAP4REV1; |
251 |
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else if (strcasestr(line + m[3].rm_so, "IMAP4")) |
252 |
|
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opts.force_protocol = PROTOCOL_IMAP4; |
253 |
|
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else |
254 |
|
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opts.force_protocol = PROTOCOL_NONE; |
255 |
lefcha |
1.17 |
debug("options: force_protocol = %d\n", opts.force_protocol); |
256 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "errors", 6)) { |
257 |
|
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
258 |
lefcha |
1.11 |
opts.errors = 1; |
259 |
lefcha |
1.1 |
else |
260 |
lefcha |
1.11 |
opts.errors = 0; |
261 |
lefcha |
1.17 |
debug("options: errors = %d\n", opts.errors); |
262 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "expunge", 7)) { |
263 |
|
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
264 |
lefcha |
1.11 |
opts.expunge = 1; |
265 |
lefcha |
1.1 |
else |
266 |
lefcha |
1.11 |
opts.expunge = 0; |
267 |
lefcha |
1.17 |
debug("options: expunge = %d\n", opts.expunge); |
268 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "header", 6)) { |
269 |
|
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
270 |
lefcha |
1.11 |
opts.headers = 1; |
271 |
lefcha |
1.1 |
else |
272 |
lefcha |
1.11 |
opts.headers = 0; |
273 |
lefcha |
1.17 |
debug("options: headers = %d\n", opts.headers); |
274 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "namespace", 9)) { |
275 |
|
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
276 |
lefcha |
1.11 |
opts.namespace = 1; |
277 |
lefcha |
1.1 |
else |
278 |
lefcha |
1.11 |
opts.namespace = 0; |
279 |
lefcha |
1.17 |
debug("options: namespace = %d\n", opts.namespace); |
280 |
lefcha |
1.7 |
} else if (!strncasecmp(line + m[2].rm_so, "peek", 4)) { |
281 |
|
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
282 |
lefcha |
1.11 |
opts.peek = 1; |
283 |
lefcha |
1.7 |
else |
284 |
lefcha |
1.11 |
opts.peek = 0; |
285 |
lefcha |
1.17 |
debug("options: peek = %d\n", opts.peek); |
286 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "subscribe", 9)) { |
287 |
|
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
288 |
lefcha |
1.11 |
opts.subscribe = 1; |
289 |
lefcha |
1.1 |
else |
290 |
lefcha |
1.11 |
opts.subscribe = 0; |
291 |
lefcha |
1.17 |
debug("options: subscribe = %d\n", opts.subscribe); |
292 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "timeout", 7)) { |
293 |
|
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errno = 0; |
294 |
lefcha |
1.11 |
opts.timeout = strtol(line + m[3].rm_so, NULL, 10); |
295 |
lefcha |
1.1 |
if (errno) |
296 |
lefcha |
1.11 |
opts.timeout = 0; |
297 |
lefcha |
1.17 |
debug("options: timeout = %d\n", opts.timeout); |
298 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "daemon", 6) && |
299 |
lefcha |
1.11 |
!opts.daemon) { |
300 |
lefcha |
1.1 |
errno = 0; |
301 |
lefcha |
1.11 |
opts.daemon = strtoul(line + m[3].rm_so, NULL, 10); |
302 |
lefcha |
1.1 |
if (errno) |
303 |
lefcha |
1.11 |
opts.daemon = 0; |
304 |
lefcha |
1.17 |
debug("options: daemon = %d\n", opts.daemon); |
305 |
lefcha |
1.1 |
} |
306 |
|
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} |
307 |
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|
308 |
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|
309 |
|
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#ifdef ENCRYPTED_PASSWORDS |
310 |
|
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/* |
311 |
|
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* Open password file and call parse_passwords(). |
312 |
|
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*/ |
313 |
|
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int |
314 |
|
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read_passwords(void) |
315 |
|
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{ |
316 |
|
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FILE *fd; |
317 |
|
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char pwfile[PATH_MAX]; |
318 |
|
|
|
319 |
lefcha |
1.12 |
if (!(flags & FLAG_BLANKPASS)) |
320 |
|
|
return ERROR_PARSER; |
321 |
lefcha |
1.1 |
|
322 |
|
|
if (!passphr) { |
323 |
|
|
passphr = (char *)smalloc(PASSPHRASE_LEN); |
324 |
|
|
*passphr = '\0'; |
325 |
|
|
} |
326 |
lefcha |
1.12 |
snprintf(pwfile, PATH_MAX, "%s/%s", home, PATHNAME_PASSWORDS); |
327 |
lefcha |
1.9 |
debug("passwords file: '%s'\n", pwfile); |
328 |
lefcha |
1.1 |
|
329 |
|
|
if (!exists_file(pwfile)) |
330 |
lefcha |
1.12 |
return ERROR_FILEOPEN; |
331 |
lefcha |
1.1 |
|
332 |
|
|
check_file_perms(pwfile, S_IRUSR | S_IWUSR); |
333 |
|
|
|
334 |
|
|
fd = fopen(pwfile, "r"); |
335 |
|
|
if (fd == NULL) |
336 |
lefcha |
1.12 |
fatal(ERROR_FILEOPEN, "opening passwords file %s; %s\n", |
337 |
lefcha |
1.1 |
pwfile, strerror(errno)); |
338 |
|
|
|
339 |
|
|
parse_passwords(fd); |
340 |
|
|
|
341 |
|
|
fclose(fd); |
342 |
|
|
|
343 |
|
|
return 0; |
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
|
347 |
|
|
/* |
348 |
lefcha |
1.15 |
* Parse unencrypted password file. |
349 |
lefcha |
1.1 |
*/ |
350 |
|
|
int |
351 |
|
|
parse_passwords(FILE * fd) |
352 |
|
|
{ |
353 |
|
|
int t; |
354 |
|
|
char *pe; |
355 |
lefcha |
1.12 |
char user[USER_LEN], serv[SERVER_LEN]; |
356 |
lefcha |
1.1 |
unsigned char *buf; |
357 |
|
|
char *c, *cp, *line; |
358 |
|
|
regex_t creg; |
359 |
|
|
regmatch_t match[4]; |
360 |
|
|
const char *reg; |
361 |
|
|
|
362 |
|
|
t = 3; |
363 |
|
|
pe = NULL; |
364 |
|
|
reg = "([[:alnum:].-]+) ([[:graph:]]+) ([[:graph:]]+)"; |
365 |
|
|
|
366 |
lefcha |
1.12 |
if (!(flags & FLAG_DAEMON)) { |
367 |
lefcha |
1.1 |
do { |
368 |
|
|
fseek(fd, 0L, SEEK_SET); |
369 |
|
|
printf("Enter master passphrase: "); |
370 |
|
|
get_password(passphr, PASSPHRASE_LEN); |
371 |
|
|
} while (decrypt_passwords(&buf, fd) && --t != 0); |
372 |
|
|
|
373 |
|
|
if (!t) |
374 |
|
|
return ERROR_PASSPHRASE; |
375 |
|
|
} else if (decrypt_passwords(&buf, fd)) |
376 |
|
|
fatal(ERROR_DECRYPT, |
377 |
|
|
"failed decrypting passwords in daemon mode\n"); |
378 |
|
|
|
379 |
|
|
c = cp = sstrdup(buf); |
380 |
|
|
|
381 |
|
|
regcomp(&creg, reg, REG_EXTENDED | REG_ICASE); |
382 |
|
|
|
383 |
|
|
line = strtok_r(c, "\n", &c); |
384 |
|
|
while (line != NULL && !regexec(&creg, line, 4, match, 0)) { |
385 |
|
|
user[0] = serv[0] = '\0'; |
386 |
|
|
|
387 |
|
|
strncat(serv, line + match[1].rm_so, |
388 |
|
|
min(match[1].rm_eo - match[1].rm_so, SERVER_LEN - 1)); |
389 |
|
|
strncat(user, line + match[2].rm_so, |
390 |
lefcha |
1.12 |
min(match[2].rm_eo - match[2].rm_so, USER_LEN - 1)); |
391 |
lefcha |
1.1 |
|
392 |
|
|
if ((pe = (char *)find_password(user, serv))) |
393 |
|
|
strncat(pe, line + match[3].rm_so, |
394 |
|
|
min(match[3].rm_eo - match[3].rm_so, |
395 |
lefcha |
1.15 |
PASS_LEN - 1)); |
396 |
lefcha |
1.1 |
|
397 |
|
|
line = strtok_r(NULL, "\n", &c); |
398 |
|
|
} |
399 |
|
|
|
400 |
|
|
regfree(&creg); |
401 |
|
|
sfree(cp); |
402 |
|
|
sfree(buf); |
403 |
|
|
|
404 |
|
|
return 0; |
405 |
|
|
} |
406 |
|
|
#endif /* ENCRYPTED_PASSWORDS */ |