| 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 *) malloc(PATH_MAX * sizeof(char)); |
| 30 |
|
| 31 |
|
| 32 |
home = getenv("HOME"); |
| 33 |
|
| 34 |
snprintf(cfg, PATH_MAX, "%s/%s", home, ".imapfilterrc"); |
| 35 |
} |
| 36 |
#ifdef DEBUG |
| 37 |
printf("debug: configuration file: '%s'\n", cfg); |
| 38 |
#endif |
| 39 |
#ifdef CHECK_PERMISSIONS |
| 40 |
check_permissions(cfg); |
| 41 |
#endif |
| 42 |
fp = fopen(cfg, "r"); |
| 43 |
|
| 44 |
if (!fp) |
| 45 |
fatal(ERROR_FILE_OPEN, "imapfilter: opening config file %s; %s\n", |
| 46 |
cfg, strerror(errno)); |
| 47 |
|
| 48 |
if ((r = parse_config(fp))) |
| 49 |
fatal(ERROR_CONFIG_PARSE, |
| 50 |
"imapfilter: parse error in config file at row %d\n", r); |
| 51 |
|
| 52 |
fclose(fp); |
| 53 |
|
| 54 |
#ifdef DEBUG |
| 55 |
printf("debug: options: %0#10x\n", options); |
| 56 |
#endif |
| 57 |
|
| 58 |
return 0; |
| 59 |
} |
| 60 |
|
| 61 |
|
| 62 |
#ifdef CHECK_PERMISSIONS |
| 63 |
/* |
| 64 |
* Check the permissions of the configuration file. |
| 65 |
*/ |
| 66 |
int check_permissions(char *cfg) |
| 67 |
{ |
| 68 |
struct stat fs; |
| 69 |
|
| 70 |
if (stat(cfg, &fs)) { |
| 71 |
error("imapfilter: getting file %s status; %s\n", cfg, |
| 72 |
strerror(errno)); |
| 73 |
return ERROR_TRIVIAL; |
| 74 |
} |
| 75 |
|
| 76 |
if (!S_ISREG(fs.st_mode)) { |
| 77 |
error("imapfilter: file %s not a regular file\n", cfg); |
| 78 |
return ERROR_TRIVIAL; |
| 79 |
} |
| 80 |
|
| 81 |
if ((fs.st_mode & 00777) != (S_IRUSR | S_IWUSR)) { |
| 82 |
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 |
} |
| 87 |
|
| 88 |
return 0; |
| 89 |
} |
| 90 |
#endif |
| 91 |
|
| 92 |
/* |
| 93 |
* Parse configuration file. |
| 94 |
*/ |
| 95 |
int parse_config(FILE * fp) |
| 96 |
{ |
| 97 |
int i, r = 0; |
| 98 |
unsigned int row = 0; |
| 99 |
char line[LINE_MAX]; |
| 100 |
regex_t creg[11]; |
| 101 |
regmatch_t match[7]; |
| 102 |
const char *reg[11] = { |
| 103 |
"^([[:blank:]]*\n|#.*\n)$", |
| 104 |
"^[[:blank:]]*ACCOUNT[[:blank:]]+([[:graph:]]*):([[:graph:]]*)@([[:alnum:].-]+)(:[[:digit:]]{1,5})?[[:blank:]]*\n$", |
| 105 |
"^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+([[:graph:]]+)[[:blank:]]*\n$", |
| 106 |
"^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$", |
| 107 |
"^[[:blank:]]*ACTION[[:blank:]]+(DELETE|COPY[[:blank:]]+([[:graph:]]+)|MOVE[[:blank:]]+([[:graph:]]+)|LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$", |
| 108 |
"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$", |
| 109 |
"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
| 110 |
"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
| 111 |
"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*(LARGER|SMALLER)[[:blank:]]+([[:digit:]]+)[[:blank:]]*\n$", |
| 112 |
"^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]*\n$", |
| 113 |
"^[[:blank:]]*LOGFILE[[:blank:]]*=[[:blank:]]*([[:print:]]+)\n$" |
| 114 |
}; |
| 115 |
|
| 116 |
for (i = 0; i < 11; i++) |
| 117 |
regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE); |
| 118 |
|
| 119 |
while (fgets(line, LINE_MAX - 1, fp)) { |
| 120 |
row++; |
| 121 |
if (!regexec(&creg[0], line, 0, match, 0)) |
| 122 |
continue; |
| 123 |
else if (!regexec(&creg[1], line, 6, match, 0)) |
| 124 |
set_account(line, match); |
| 125 |
else if (!regexec(&creg[2], line, 3, match, 0)) |
| 126 |
r = set_mboxgrp(line, match); |
| 127 |
else if (!regexec(&creg[3], line, 3, match, 0)) |
| 128 |
r = set_filter(line, match); |
| 129 |
else if (!regexec(&creg[4], line, 5, match, 0)) |
| 130 |
r = set_action(line, match); |
| 131 |
else if (!regexec(&creg[5], line, 7, match, 0) || |
| 132 |
!regexec(&creg[6], line, 7, match, 0) || |
| 133 |
!regexec(&creg[7], line, 7, match, 0) || |
| 134 |
!regexec(&creg[8], line, 7, match, 0)) |
| 135 |
r = set_mask(line, match); |
| 136 |
else if (!regexec(&creg[9], line, 3, match, 0)) |
| 137 |
r = set_job(line, match); |
| 138 |
else if (!regexec(&creg[10], line, 2, match, 0)) |
| 139 |
set_options(line, match); |
| 140 |
else |
| 141 |
return row; |
| 142 |
|
| 143 |
if (r == ERROR_CONFIG_PARSE) |
| 144 |
return row; |
| 145 |
} |
| 146 |
|
| 147 |
for (i = 0; i < 11; i++) |
| 148 |
regfree(&creg[i]); |
| 149 |
|
| 150 |
destroy_data(); |
| 151 |
|
| 152 |
return 0; |
| 153 |
} |
| 154 |
|
| 155 |
|
| 156 |
/* |
| 157 |
* Set other options found in config file. |
| 158 |
*/ |
| 159 |
void set_options(char *line, regmatch_t * match) |
| 160 |
{ |
| 161 |
if (!*logfile) |
| 162 |
strncat(logfile, line + match[1].rm_so, |
| 163 |
min((match[1].rm_eo - match[1].rm_so), PATH_MAX - 1)); |
| 164 |
} |
Parent Directory
| 
Revision Log