mirror of
https://bitbucket.org/jsuto/piler.git
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307 lines
11 KiB
C
307 lines
11 KiB
C
/*
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* cfg.c, SJ
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stddef.h>
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#include "cfg.h"
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#include "misc.h"
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#include "config.h"
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int string_parser(char *src, char *target, int limit){
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snprintf(target, limit, "%s", src);
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return 0;
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};
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int multi_line_string_parser(char *src, char *target, unsigned int limit){
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if(strlen(src) > 0 && strlen(target) + strlen(src) + 3 < limit){
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strncat(target, src, limit-strlen(target));
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strncat(target, "\r\n", limit-strlen(target));
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return 0;
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}
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return 1;
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};
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int int_parser(char *src, int *target){
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*target = strtol(src, (char **) NULL, 10);
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return 0;
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};
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int float_parser(char *src, float *target){
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*target = strtof(src, (char **) NULL);
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return 0;
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};
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struct _parse_rule {
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char *name;
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char *type;
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int(*parser)(char*,void*,int);
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size_t offset;
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char *def_val;
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int limit;
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};
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/*
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* all known configuration items in order
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*/
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struct _parse_rule config_parse_rules[] =
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{
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{ "archive_emails_not_having_message_id", "integer", (void*) int_parser, offsetof(struct config, archive_emails_not_having_message_id), "0", sizeof(int)},
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{ "archive_only_mydomains", "integer", (void*) int_parser, offsetof(struct config, archive_only_mydomains), "0", sizeof(int)},
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{ "backlog", "integer", (void*) int_parser, offsetof(struct config, backlog), "20", sizeof(int)},
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{ "check_for_client_timeout_interval", "integer", (void*) int_parser, offsetof(struct config, check_for_client_timeout_interval), "20", sizeof(int)},
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{ "cipher_list", "string", (void*) string_parser, offsetof(struct config, cipher_list), "ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS", MAXVAL-1},
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{ "clamd_addr", "string", (void*) string_parser, offsetof(struct config, clamd_addr), "", MAXVAL-1},
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{ "clamd_port", "integer", (void*) int_parser, offsetof(struct config, clamd_port), "0", sizeof(int)},
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{ "clamd_socket", "string", (void*) string_parser, offsetof(struct config, clamd_socket), CLAMD_SOCKET, MAXVAL-1},
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{ "debug", "integer", (void*) int_parser, offsetof(struct config, debug), "0", sizeof(int)},
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{ "default_retention_days", "integer", (void*) int_parser, offsetof(struct config, default_retention_days), "2557", sizeof(int)},
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{ "enable_chunking", "integer", (void*) int_parser, offsetof(struct config, enable_chunking), "0", sizeof(int)},
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{ "enable_cjk", "integer", (void*) int_parser, offsetof(struct config, enable_cjk), "0", sizeof(int)},
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{ "enable_folders", "integer", (void*) int_parser, offsetof(struct config, enable_folders), "0", sizeof(int)},
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{ "encrypt_messages", "integer", (void*) int_parser, offsetof(struct config, encrypt_messages), "1", sizeof(int)},
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{ "extra_to_field", "string", (void*) string_parser, offsetof(struct config, extra_to_field), "", MAXVAL-1},
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{ "extract_attachments", "integer", (void*) int_parser, offsetof(struct config, extract_attachments), "1", sizeof(int)},
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{ "helper_timeout", "integer", (void*) int_parser, offsetof(struct config, helper_timeout), "20", sizeof(int)},
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{ "hostid", "string", (void*) string_parser, offsetof(struct config, hostid), HOSTID, MAXVAL-1},
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{ "iv", "string", (void*) string_parser, offsetof(struct config, iv), "", MAXVAL-1},
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{ "listen_addr", "string", (void*) string_parser, offsetof(struct config, listen_addr), "0.0.0.0", MAXVAL-1},
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{ "listen_port", "integer", (void*) int_parser, offsetof(struct config, listen_port), "25", sizeof(int)},
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{ "locale", "string", (void*) string_parser, offsetof(struct config, locale), "", MAXVAL-1},
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{ "max_connections", "integer", (void*) int_parser, offsetof(struct config, max_connections), "64", sizeof(int)},
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{ "max_requests_per_child", "integer", (void*) int_parser, offsetof(struct config, max_requests_per_child), "10000", sizeof(int)},
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{ "memcached_servers", "string", (void*) string_parser, offsetof(struct config, memcached_servers), "127.0.0.1", MAXVAL-1},
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{ "memcached_to_db_interval", "integer", (void*) int_parser, offsetof(struct config, memcached_to_db_interval), "900", sizeof(int)},
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{ "memcached_ttl", "integer", (void*) int_parser, offsetof(struct config, memcached_ttl), "86400", sizeof(int)},
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{ "min_message_size", "integer", (void*) int_parser, offsetof(struct config, min_message_size), "100", sizeof(int)},
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{ "min_word_len", "integer", (void*) int_parser, offsetof(struct config, min_word_len), "1", sizeof(int)},
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{ "mmap_dedup_test", "integer", (void*) int_parser, offsetof(struct config, mmap_dedup_test), "0", sizeof(int)},
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{ "mysqlcharset", "string", (void*) string_parser, offsetof(struct config, mysqlcharset), "utf8mb4", MAXVAL-1},
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{ "mysqlhost", "string", (void*) string_parser, offsetof(struct config, mysqlhost), "", MAXVAL-1},
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{ "mysqlport", "integer", (void*) int_parser, offsetof(struct config, mysqlport), "", sizeof(int)},
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{ "mysqlsocket", "string", (void*) string_parser, offsetof(struct config, mysqlsocket), "/tmp/mysql.sock", MAXVAL-1},
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{ "mysqluser", "string", (void*) string_parser, offsetof(struct config, mysqluser), "piler", MAXVAL-1},
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{ "mysqlpwd", "string", (void*) string_parser, offsetof(struct config, mysqlpwd), "", MAXVAL-1},
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{ "mysqldb", "string", (void*) string_parser, offsetof(struct config, mysqldb), "piler", MAXVAL-1},
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{ "mysql_connect_timeout", "integer", (void*) int_parser, offsetof(struct config, mysql_connect_timeout), "2", sizeof(int)},
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{ "number_of_worker_processes", "integer", (void*) int_parser, offsetof(struct config, number_of_worker_processes), "2", sizeof(int)},
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{ "pemfile", "string", (void*) string_parser, offsetof(struct config, pemfile), "", MAXVAL-1},
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{ "pidfile", "string", (void*) string_parser, offsetof(struct config, pidfile), PIDFILE, MAXVAL-1},
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{ "piler_header_field", "string", (void*) string_parser, offsetof(struct config, piler_header_field), "X-piler-id:", MAXVAL-1},
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{ "process_rcpt_to_addresses", "integer", (void*) int_parser, offsetof(struct config, process_rcpt_to_addresses), "0", sizeof(int)},
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{ "queuedir", "string", (void*) string_parser, offsetof(struct config, queuedir), QUEUE_DIR, MAXVAL-1},
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{ "server_id", "integer", (void*) int_parser, offsetof(struct config, server_id), "0", sizeof(int)},
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{ "smtp_timeout", "integer", (void*) int_parser, offsetof(struct config, smtp_timeout), "60", sizeof(int)},
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{ "spam_header_line", "string", (void*) string_parser, offsetof(struct config, spam_header_line), "", MAXVAL-1},
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{ "syslog_recipients", "integer", (void*) int_parser, offsetof(struct config, syslog_recipients), "0", sizeof(int)},
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{ "tls_enable", "integer", (void*) int_parser, offsetof(struct config, tls_enable), "0", sizeof(int)},
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{ "tweak_sent_time_offset", "integer", (void*) int_parser, offsetof(struct config, tweak_sent_time_offset), "0", sizeof(int)},
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{ "update_counters_to_memcached", "integer", (void*) int_parser, offsetof(struct config, update_counters_to_memcached), "0", sizeof(int)},
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{ "username", "string", (void*) string_parser, offsetof(struct config, username), "piler", MAXVAL-1},
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{ "use_antivirus", "integer", (void*) int_parser, offsetof(struct config, use_antivirus), "1", sizeof(int)},
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{ "verbosity", "integer", (void*) int_parser, offsetof(struct config, verbosity), "1", sizeof(int)},
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{ "workdir", "string", (void*) string_parser, offsetof(struct config, workdir), WORK_DIR, MAXVAL-1},
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{NULL, NULL, NULL, 0, 0, 0}
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};
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/*
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* parse configfile
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*/
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int parse_config_file(char *configfile, struct config *target_cfg, struct _parse_rule *rules){
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char line[MAXVAL], *chpos;
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FILE *f;
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if(!configfile) return -1;
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f = fopen(configfile, "r");
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if(!f) return -1;
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while(fgets(&line[0], MAXVAL-1, f)){
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if(line[0] == ';' || line[0] == '#') continue;
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chpos = strchr(line, '=');
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if(chpos){
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trimBuffer(chpos+1);
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*chpos = '\0';
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int i = 0;
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while(rules[i].name){
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if(!strcmp(line, rules[i].name)) {
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if(rules[i].parser(chpos+1, (char*)target_cfg + rules[i].offset, rules[i].limit)){
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printf("failed to parse %s: \"%s\"\n", line, chpos+1);
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}
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break;
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}
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i++;
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}
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if(!rules[i].name) syslog(LOG_PRIORITY, "unknown key: \"%s\"", line);
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}
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}
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fclose(f);
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return 0;
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}
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int load_default_config(struct config *cfg, struct _parse_rule *rules){
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int i=0;
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while(rules[i].name){
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rules[i].parser(rules[i].def_val, (char*)cfg + rules[i].offset, rules[i].limit);
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i++;
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}
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return 0;
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}
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/*
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* read configuration file variables
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*/
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struct config read_config(char *configfile){
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struct config cfg;
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/* reset config structure and fill it with defaults */
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memset((char *)&cfg, 0, sizeof(struct config));
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load_default_config(&cfg, config_parse_rules);
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/* parse the config file */
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if(parse_config_file(configfile, &cfg, config_parse_rules) == -1) printf("error parsing the configfile: %s\n", configfile);
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cfg.hostid_len = strlen(cfg.hostid);
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return cfg;
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}
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/*
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* print a single configuration item as key=value
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*/
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void print_config_item(struct config *cfg, struct _parse_rule *rules, int i){
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int j;
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float f;
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char *p, buf[MAXVAL];
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p = (char*)cfg + rules[i].offset;
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if(strcmp(rules[i].type, "integer") == 0){
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memcpy((char*)&j, p, sizeof(int));
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printf("%s=%d\n", rules[i].name, j);
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}
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else if(strcmp(rules[i].type, "float") == 0){
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memcpy((char*)&f, p, sizeof(float));
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printf("%s=%.4f\n", rules[i].name, f);
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}
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else if(strcmp(rules[i].type, "multi_line_string") == 0){
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j = 0;
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do {
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p = split_str(p, "\r\n", buf, MAXVAL-1);
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if(p || !j) printf("%s=%s\n", rules[i].name, buf);
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j++;
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} while(p);
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}
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else {
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trimBuffer(p);
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printf("%s=%s\n", rules[i].name, p);
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}
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}
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/*
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* print all known configuration items
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*/
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void print_config_all(struct config *cfg, char *key){
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int i=0;
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struct _parse_rule *rules;
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rules = &config_parse_rules[0];
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while(rules[i].name){
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if(key == NULL){
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print_config_item(cfg, rules, i);
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}
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else {
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if(strcmp(key, rules[i].name) == 0)
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print_config_item(cfg, rules, i);
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}
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i++;
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}
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}
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/*
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* print all configuration items found in configfile
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*/
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void print_config(char *configfile, struct config *cfg){
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FILE *f;
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char line[MAXVAL], *chpos, previtem[MAXVAL];
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struct _parse_rule *rules;
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if(!configfile) return;
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f = fopen(configfile, "r");
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if(!f) return;
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rules = &config_parse_rules[0];
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memset(previtem, 0, MAXVAL);
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while(fgets(&line[0], MAXVAL-1, f)){
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if(line[0] == ';' || line[0] == '#') continue;
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chpos = strchr(line, '=');
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if(chpos){
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trimBuffer(chpos+1);
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*chpos = '\0';
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int i = 0;
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while(rules[i].name){
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if(strcmp(line, rules[i].name) == 0) {
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if(strcmp(line, previtem)) print_config_item(cfg, rules, i);
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snprintf(previtem, MAXVAL-1, "%s", line);
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break;
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}
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i++;
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}
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if(!rules[i].name) printf("unknown key: \"%s\" \n", line);
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}
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}
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fclose(f);
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}
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