| 1 |
lefcha |
1.1 |
#include <stdio.h> |
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lefcha |
1.3 |
#include <stdlib.h> |
| 3 |
lefcha |
1.1 |
#include <string.h> |
| 4 |
lefcha |
1.4.2.1 |
#include <strings.h> |
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lefcha |
1.1 |
#include <errno.h> |
| 6 |
lefcha |
1.4.2.1 |
#include <limits.h> |
| 7 |
lefcha |
1.1 |
#include <sys/stat.h> |
| 8 |
lefcha |
1.4.2.2 |
#include <sys/types.h> /* IEEE Std 1003.1-2001 non-conformance. */ |
| 9 |
lefcha |
1.4.2.1 |
#include <regex.h> |
| 10 |
lefcha |
1.1 |
|
| 11 |
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#include "config.h" |
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#include "imapfilter.h" |
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#include "pathnames.h" |
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extern char logfile[PATH_MAX]; |
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extern unsigned int options; |
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extern char charset[CHARSET_LEN]; |
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extern unsigned int flags; |
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extern unsigned int interval; |
| 21 |
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extern long timeout; |
| 22 |
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extern char *home; |
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| 24 |
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#ifdef ENCRYPTED_PASSWORDS |
| 25 |
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char *passphr = NULL; /* Master password to access the passwords |
| 26 |
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* file. */ |
| 27 |
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#endif |
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| 30 |
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int parse_config(FILE * fd); |
| 31 |
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void set_options(char *line, regmatch_t * match); |
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| 33 |
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int parse_passwords(FILE * fd); |
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/* |
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* Find the path to configuration file, open it and call parse_config(). |
| 38 |
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*/ |
| 39 |
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int |
| 40 |
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read_config(char *cfg) |
| 41 |
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{ |
| 42 |
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int r; |
| 43 |
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FILE *fd; |
| 44 |
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char *c; |
| 45 |
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| 46 |
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c = NULL; |
| 47 |
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| 48 |
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if (cfg == NULL) { |
| 49 |
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cfg = c = (char *)xmalloc(PATH_MAX * sizeof(char)); |
| 50 |
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snprintf(cfg, PATH_MAX, "%s/%s", home, PATHNAME_CONFIG_FILE); |
| 51 |
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} |
| 52 |
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#ifdef DEBUG |
| 53 |
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fprintf(stderr, "debug: configuration file: '%s'\n", cfg); |
| 54 |
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#endif |
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#ifdef CHECK_PERMISSIONS |
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check_file_perms(cfg, S_IRUSR | S_IWUSR); |
| 57 |
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#endif |
| 58 |
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fd = fopen(cfg, "r"); |
| 59 |
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if (fd == NULL) |
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fatal(ERROR_FILE_OPEN, "opening config file %s; %s\n", cfg, |
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strerror(errno)); |
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if (c != NULL) |
| 64 |
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xfree(c); |
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| 66 |
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if ((r = parse_config(fd))) |
| 67 |
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fatal(ERROR_CONFIG_PARSE, |
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"parse error in config file at row %d\n", r); |
| 69 |
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| 70 |
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fclose(fd); |
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| 72 |
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#ifdef DEBUG |
| 73 |
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fprintf(stderr, "debug: options: %0#10x '%s'\n", options, charset); |
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#endif |
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| 76 |
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return 0; |
| 77 |
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} |
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/* |
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* Parse configuration file. |
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*/ |
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int |
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parse_config(FILE * fd) |
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{ |
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int i, r; |
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unsigned int row; |
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char line[LINE_MAX]; |
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regex_t creg[13]; |
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regmatch_t match[11]; |
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const char *reg[13] = { |
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"^([[:blank:]]*\n|#.*\n)$", |
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"^[[:blank:]]*ACCOUNT[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
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"(([[:graph:]]+):([[:graph:]]*)|([[:graph:]]+))@" |
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"([[:alnum:].-]+)(:[[:digit:]]+)?[[:blank:]]*" |
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"([[:blank:]]SSL2|[[:blank:]]SSL3|[[:blank:]]TLS1)?" |
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"[[:blank:]]*\n$", |
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"^[[:blank:]]*FOLDER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
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"([[:print:]]+)[[:blank:]]*\n$", |
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"^[[:blank:]]*FILTER[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]*" |
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"([[:blank:]]OR|[[:blank:]]AND)?[[:blank:]]*\n$", |
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"^[[:blank:]]*ACTION[[:blank:]]+(DELETE|" |
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"COPY[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)|" |
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"MOVE[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)|" |
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"RCOPY[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
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"(\"[[:print:]]*\"|[[:graph:]]+)|" |
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"RMOVE[[:blank:]]+([[:alnum:]_-]+)[[:blank:]]+" |
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"(\"[[:print:]]*\"|[[:graph:]]+)|" |
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"FLAG[[:blank:]]+(REPLACE|ADD|REMOVE)[[:blank:]]+" |
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"([[:alpha:],]+)|" |
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"LIST)[[:blank:]]*([[:graph:]]*)[[:blank:]]*\n$", |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
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"(ANSWERED|DELETED|DRAFT|FLAGGED|NEW|OLD|RECENT|SEEN|" |
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"UNANSWERED|UNDELETED|UNDRAFT|UNFLAGGED|UNSEEN)[[:blank:]]*\n$", |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
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"(BCC|BODY|CC|FROM|SUBJECT|TEXT|TO)[[:blank:]]+" |
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"(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
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| 127 |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
| 128 |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
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"(HEADER)[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)" |
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"[[:blank:]]+(\"[[:print:]]*\"|[[:graph:]]+)[[:blank:]]*\n$", |
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"^[[:blank:]]*(MASK[[:blank:]])?[[:blank:]]*(OR[[:blank:]]|" |
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"AND[[:blank:]])?[[:blank:]]*(NOT[[:blank:]])?[[:blank:]]*" |
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"(LARGER|SMALLER|OLDER|NEWER)[[:blank:]]+([[:digit:]]+)" |
| 135 |
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"[[:blank:]]*\n$", |
| 136 |
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"^[[:blank:]]*JOB[[:blank:]]+([[:alnum:],_-]+)[[:blank:]]+" |
| 138 |
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"([[:alnum:],_-]+)[[:blank:]]*\n$", |
| 139 |
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| 140 |
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"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(LOGFILE|CHARSET)" |
| 141 |
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"[[:blank:]]*=[[:blank:]]*(\"[[:print:]]*\"|[[:graph:]]+)" |
| 142 |
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"[[:blank:]]*\n$", |
| 143 |
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| 144 |
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"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(ERRORS|EXPUNGE|" |
| 145 |
lefcha |
1.4.2.3 |
"HEADERS|NAMESPACE|PEEK|SUBSCRIBE)[[:blank:]]*=[[:blank:]]*" |
| 146 |
lefcha |
1.1 |
"(YES|NO)[[:blank:]]*\n$", |
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| 148 |
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"^[[:blank:]]*(SET[[:blank:]])?[[:blank:]]*(DAEMON|TIMEOUT)" |
| 149 |
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"[[:blank:]]*=[[:blank:]]*([[:digit:]]+)\n$" |
| 150 |
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}; |
| 151 |
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| 152 |
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r = row = 0; |
| 153 |
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| 154 |
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for (i = 0; i < 13; i++) |
| 155 |
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regcomp(&creg[i], reg[i], REG_EXTENDED | REG_ICASE); |
| 156 |
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| 157 |
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/* First process all the variables. This is done because some |
| 158 |
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* variables' arguments are used before the other commands are |
| 159 |
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* processed. */ |
| 160 |
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while (fgets(line, LINE_MAX - 1, fd)) |
| 161 |
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if (!regexec(&creg[10], line, 4, match, 0) || |
| 162 |
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!regexec(&creg[11], line, 4, match, 0) || |
| 163 |
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!regexec(&creg[12], line, 4, match, 0)) |
| 164 |
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set_options(line, match); |
| 165 |
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| 166 |
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/* Then rewind and process everything else. */ |
| 167 |
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fseek(fd, 0L, SEEK_SET); |
| 168 |
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while (fgets(line, LINE_MAX - 1, fd)) { |
| 169 |
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row++; |
| 170 |
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if (!regexec(&creg[0], line, 0, match, 0)) |
| 171 |
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continue; |
| 172 |
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else if (!regexec(&creg[1], line, 9, match, 0)) |
| 173 |
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set_account(line, match); |
| 174 |
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else if (!regexec(&creg[2], line, 3, match, 0)) |
| 175 |
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r = set_mboxgrp(line, match); |
| 176 |
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else if (!regexec(&creg[3], line, 3, match, 0)) |
| 177 |
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r = set_filter(line, match); |
| 178 |
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else if (!regexec(&creg[4], line, 11, match, 0)) |
| 179 |
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r = set_action(line, match); |
| 180 |
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else if (!regexec(&creg[5], line, 5, match, 0)) |
| 181 |
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r = set_mask(line, match, MASK_MATCH_1); |
| 182 |
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else if (!regexec(&creg[6], line, 6, match, 0)) |
| 183 |
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r = set_mask(line, match, MASK_MATCH_2); |
| 184 |
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else if (!regexec(&creg[7], line, 7, match, 0)) |
| 185 |
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r = set_mask(line, match, MASK_MATCH_3); |
| 186 |
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else if (!regexec(&creg[8], line, 6, match, 0)) |
| 187 |
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r = set_mask(line, match, MASK_MATCH_4); |
| 188 |
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else if (!regexec(&creg[9], line, 3, match, 0)) |
| 189 |
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r = set_job(line, match); |
| 190 |
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/* Skip variable processing. */ |
| 191 |
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else if (!regexec(&creg[10], line, 4, match, 0) || |
| 192 |
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!regexec(&creg[11], line, 4, match, 0) || |
| 193 |
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!regexec(&creg[12], line, 4, match, 0)); |
| 194 |
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else |
| 195 |
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return row; |
| 196 |
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| 197 |
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if (r == ERROR_CONFIG_PARSE) |
| 198 |
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return row; |
| 199 |
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} |
| 200 |
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| 201 |
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for (i = 0; i < 13; i++) |
| 202 |
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regfree(&creg[i]); |
| 203 |
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| 204 |
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destroy_unneeded(); |
| 205 |
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| 206 |
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return 0; |
| 207 |
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} |
| 208 |
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| 209 |
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| 210 |
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/* |
| 211 |
lefcha |
1.4 |
* Signal SIGUSR1 received, destroy all data structures and reread the |
| 212 |
lefcha |
1.1 |
* configuration file. |
| 213 |
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*/ |
| 214 |
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void |
| 215 |
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reread_config(char *cfg) |
| 216 |
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{ |
| 217 |
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destroy_all(); |
| 218 |
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read_config(cfg); |
| 219 |
lefcha |
1.2 |
#ifdef ENCRYPTED_PASSWORDS |
| 220 |
lefcha |
1.1 |
read_passwords(); |
| 221 |
lefcha |
1.2 |
#endif |
| 222 |
lefcha |
1.4 |
flags &= ~(FLAG_SIGUSR1_RECEIVED); |
| 223 |
lefcha |
1.1 |
} |
| 224 |
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| 225 |
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| 226 |
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/* |
| 227 |
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* Set other options found in config file. |
| 228 |
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*/ |
| 229 |
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void |
| 230 |
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set_options(char *line, regmatch_t * m) |
| 231 |
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{ |
| 232 |
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if (!strncasecmp(line + m[2].rm_so, "logfile", 7)) { |
| 233 |
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if (*logfile == '\0') { |
| 234 |
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if (*(line + m[3].rm_so) == '"' && |
| 235 |
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*(line + m[3].rm_eo - 1) == '"') |
| 236 |
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strncat(logfile, line + m[3].rm_so + 1, |
| 237 |
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min((m[3].rm_eo - m[3].rm_so - 2), |
| 238 |
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PATH_MAX - 1)); |
| 239 |
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else |
| 240 |
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strncat(logfile, line + m[3].rm_so, |
| 241 |
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min((m[3].rm_eo - m[3].rm_so), |
| 242 |
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PATH_MAX - 1)); |
| 243 |
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} |
| 244 |
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} else if (!strncasecmp(line + m[2].rm_so, "charset", 7)) { |
| 245 |
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if (*(line + m[3].rm_so) == '"' && |
| 246 |
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*(line + m[3].rm_eo - 1) == '"') |
| 247 |
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strncat(charset, line + m[3].rm_so + 1, |
| 248 |
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min((m[3].rm_eo - m[3].rm_so - 2), |
| 249 |
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CHARSET_LEN - 1)); |
| 250 |
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else |
| 251 |
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strncat(charset, line + m[3].rm_so, |
| 252 |
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min((m[3].rm_eo - m[3].rm_so), CHARSET_LEN - 1)); |
| 253 |
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} else if (!strncasecmp(line + m[2].rm_so, "errors", 6)) { |
| 254 |
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
| 255 |
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options |= OPTION_ERRORS; |
| 256 |
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else |
| 257 |
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options &= ~(OPTION_ERRORS); |
| 258 |
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} else if (!strncasecmp(line + m[2].rm_so, "expunge", 7)) { |
| 259 |
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
| 260 |
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options |= OPTION_EXPUNGE; |
| 261 |
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else |
| 262 |
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options &= ~(OPTION_EXPUNGE); |
| 263 |
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} else if (!strncasecmp(line + m[2].rm_so, "header", 6)) { |
| 264 |
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
| 265 |
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options |= OPTION_HEADERS; |
| 266 |
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else |
| 267 |
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options &= ~(OPTION_HEADERS); |
| 268 |
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} else if (!strncasecmp(line + m[2].rm_so, "namespace", 9)) { |
| 269 |
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
| 270 |
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options |= OPTION_NAMESPACE; |
| 271 |
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else |
| 272 |
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options &= ~(OPTION_NAMESPACE); |
| 273 |
lefcha |
1.4.2.3 |
} else if (!strncasecmp(line + m[2].rm_so, "peek", 4)) { |
| 274 |
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
| 275 |
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options |= OPTION_PEEK; |
| 276 |
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else |
| 277 |
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options &= ~(OPTION_PEEK); |
| 278 |
lefcha |
1.1 |
} else if (!strncasecmp(line + m[2].rm_so, "subscribe", 9)) { |
| 279 |
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if (!strncasecmp(line + m[3].rm_so, "yes", 3)) |
| 280 |
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options |= OPTION_SUBSCRIBE; |
| 281 |
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else |
| 282 |
|
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options &= ~(OPTION_SUBSCRIBE); |
| 283 |
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} else if (!strncasecmp(line + m[2].rm_so, "timeout", 7)) { |
| 284 |
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errno = 0; |
| 285 |
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timeout = strtol(line + m[3].rm_so, NULL, 10); |
| 286 |
|
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if (errno) |
| 287 |
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timeout = 0; |
| 288 |
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} else if (!strncasecmp(line + m[2].rm_so, "daemon", 6) && |
| 289 |
|
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!(options & OPTION_DAEMON_MODE)) { |
| 290 |
|
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options |= OPTION_DAEMON_MODE; |
| 291 |
|
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errno = 0; |
| 292 |
|
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interval = strtoul(line + m[3].rm_so, NULL, 10); |
| 293 |
|
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if (errno) |
| 294 |
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interval = 0; |
| 295 |
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} |
| 296 |
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} |
| 297 |
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| 298 |
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| 299 |
|
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#ifdef ENCRYPTED_PASSWORDS |
| 300 |
|
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/* |
| 301 |
|
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* Open password file and call parse_passwords(). |
| 302 |
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*/ |
| 303 |
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int |
| 304 |
|
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read_passwords(void) |
| 305 |
|
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{ |
| 306 |
|
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FILE *fd; |
| 307 |
|
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char pwfile[PATH_MAX]; |
| 308 |
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| 309 |
|
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if (!(flags & FLAG_BLANK_PASSWORD)) |
| 310 |
|
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return ERROR_CONFIG_PARSE; |
| 311 |
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| 312 |
|
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if (!passphr) { |
| 313 |
|
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passphr = (char *)smalloc(PASSPHRASE_LEN); |
| 314 |
|
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*passphr = '\0'; |
| 315 |
|
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} |
| 316 |
|
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snprintf(pwfile, PATH_MAX, "%s/%s", home, PATHNAME_PASSWORD_FILE); |
| 317 |
|
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#ifdef DEBUG |
| 318 |
|
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fprintf(stderr, "debug: passwords file: '%s'\n", pwfile); |
| 319 |
|
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#endif |
| 320 |
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| 321 |
|
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if (!exists_file(pwfile)) |
| 322 |
|
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return ERROR_FILE_OPEN; |
| 323 |
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| 324 |
|
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#ifdef CHECK_PERMISSIONS |
| 325 |
|
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check_file_perms(pwfile, S_IRUSR | S_IWUSR); |
| 326 |
|
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#endif |
| 327 |
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| 328 |
|
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fd = fopen(pwfile, "r"); |
| 329 |
|
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if (fd == NULL) |
| 330 |
|
|
fatal(ERROR_FILE_OPEN, "opening passwords file %s; %s\n", |
| 331 |
|
|
pwfile, strerror(errno)); |
| 332 |
|
|
|
| 333 |
|
|
parse_passwords(fd); |
| 334 |
|
|
|
| 335 |
|
|
fclose(fd); |
| 336 |
|
|
|
| 337 |
|
|
return 0; |
| 338 |
|
|
} |
| 339 |
|
|
|
| 340 |
|
|
|
| 341 |
|
|
/* |
| 342 |
|
|
* Parse unencrypted password file. |
| 343 |
|
|
*/ |
| 344 |
|
|
int |
| 345 |
|
|
parse_passwords(FILE * fd) |
| 346 |
|
|
{ |
| 347 |
|
|
int t; |
| 348 |
|
|
char *pe; |
| 349 |
|
|
char user[USERNAME_LEN], serv[SERVER_LEN]; |
| 350 |
|
|
unsigned char *buf; |
| 351 |
|
|
char *c, *cp, *line; |
| 352 |
|
|
regex_t creg; |
| 353 |
|
|
regmatch_t match[4]; |
| 354 |
|
|
const char *reg; |
| 355 |
|
|
|
| 356 |
|
|
t = 3; |
| 357 |
|
|
pe = NULL; |
| 358 |
|
|
reg = "([[:alnum:].-]+) ([[:graph:]]+) ([[:graph:]]+)"; |
| 359 |
|
|
|
| 360 |
|
|
if (!(flags & FLAG_DAEMON_MODE)) { |
| 361 |
|
|
do { |
| 362 |
|
|
fseek(fd, 0L, SEEK_SET); |
| 363 |
|
|
printf("Enter master passphrase: "); |
| 364 |
|
|
get_password(passphr, PASSPHRASE_LEN); |
| 365 |
|
|
} while (decrypt_passwords(&buf, fd) && --t != 0); |
| 366 |
|
|
|
| 367 |
|
|
if (!t) |
| 368 |
|
|
return ERROR_PASSPHRASE; |
| 369 |
|
|
} else if (decrypt_passwords(&buf, fd)) |
| 370 |
|
|
fatal(ERROR_DECRYPT, |
| 371 |
|
|
"failed decrypting passwords in daemon mode\n"); |
| 372 |
|
|
|
| 373 |
|
|
c = cp = sstrdup(buf); |
| 374 |
|
|
|
| 375 |
|
|
regcomp(&creg, reg, REG_EXTENDED | REG_ICASE); |
| 376 |
|
|
|
| 377 |
|
|
line = strtok_r(c, "\n", &c); |
| 378 |
|
|
while (line != NULL && !regexec(&creg, line, 4, match, 0)) { |
| 379 |
|
|
user[0] = serv[0] = '\0'; |
| 380 |
|
|
|
| 381 |
|
|
strncat(serv, line + match[1].rm_so, |
| 382 |
|
|
min(match[1].rm_eo - match[1].rm_so, SERVER_LEN - 1)); |
| 383 |
|
|
strncat(user, line + match[2].rm_so, |
| 384 |
|
|
min(match[2].rm_eo - match[2].rm_so, USERNAME_LEN - 1)); |
| 385 |
|
|
|
| 386 |
|
|
if ((pe = (char *)find_password(user, serv))) |
| 387 |
|
|
strncat(pe, line + match[3].rm_so, |
| 388 |
|
|
min(match[3].rm_eo - match[3].rm_so, |
| 389 |
|
|
PASSWORD_LEN - 1)); |
| 390 |
|
|
|
| 391 |
|
|
line = strtok_r(NULL, "\n", &c); |
| 392 |
|
|
} |
| 393 |
|
|
|
| 394 |
|
|
regfree(&creg); |
| 395 |
|
|
sfree(cp); |
| 396 |
|
|
sfree(buf); |
| 397 |
|
|
|
| 398 |
|
|
return 0; |
| 399 |
|
|
} |
| 400 |
|
|
#endif /* ENCRYPTED_PASSWORDS */ |
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