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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 <errno.h> |
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#include <stdarg.h> |
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#include <limits.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <time.h> |
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#include <signal.h> |
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|
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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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|
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|
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extern connection_t connpri, connaux; |
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extern options_t opts; |
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extern unsigned int flags; |
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|
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static FILE *debugfp = NULL; /* Pointer to debug file. */ |
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static FILE *logfp = NULL; /* Pointer to logfile. */ |
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|
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|
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void signal_handler(int sig); |
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char *log_time(void); |
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|
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|
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/* |
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* Print message if not in the lowest verbosity level. |
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*/ |
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void |
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info(const char *info,...) |
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{ |
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va_list args; |
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|
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if (opts.verbosity == -2) |
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return; |
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|
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va_start(args, info); |
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vprintf(info, args); |
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va_end(args); |
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} |
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|
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|
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/* |
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* Print message if in the highest verbosity level. |
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*/ |
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void |
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verbose(const char *info,...) |
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{ |
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va_list args; |
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|
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if (opts.verbosity == 2) { |
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va_start(args, info); |
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vprintf(info, args); |
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va_end(args); |
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} |
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} |
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|
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|
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/* |
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* Write message to debug file. |
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*/ |
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void |
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debug(const char *debug,...) |
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{ |
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va_list args; |
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|
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if (opts.debug && debugfp) { |
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va_start(args, debug); |
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vfprintf(debugfp, debug, args); |
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fflush(debugfp); |
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va_end(args); |
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} |
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} |
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|
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|
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/* |
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* Print error message and write it into logfile. |
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*/ |
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void |
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error(const char *errmsg,...) |
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{ |
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va_list args; |
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|
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va_start(args, errmsg); |
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|
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fprintf(stderr, "imapfilter: "); |
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vfprintf(stderr, errmsg, args); |
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|
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if (opts.errors && logfp) { |
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vfprintf(logfp, errmsg, args); |
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fflush(logfp); |
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} |
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va_end(args); |
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} |
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|
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|
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/* |
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* Print error message and exit program. |
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*/ |
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void |
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fatal(unsigned int errnum, const char *fatal,...) |
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{ |
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va_list args; |
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|
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va_start(args, fatal); |
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fprintf(stderr, "imapfilter: "); |
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vfprintf(stderr, fatal, args); |
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va_end(args); |
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|
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close_connection(&connpri); |
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close_connection(&connaux); |
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secmem_clear(); |
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tty_restore(); |
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log_stop(); |
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lockfile_remove(); |
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debug_stop(); |
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|
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exit(errnum); |
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} |
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|
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|
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/* |
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* Catch signals that cause rereading of the configuration file or program's |
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* termination. |
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*/ |
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void |
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catch_signals(void) |
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{ |
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|
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signal(SIGUSR1, signal_handler); |
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signal(SIGINT, signal_handler); |
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signal(SIGQUIT, signal_handler); |
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signal(SIGTERM, signal_handler); |
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} |
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|
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|
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/* |
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* Signal handler for signals that cause rereading of the configuration file or |
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* termination of program. |
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*/ |
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void |
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signal_handler(int sig) |
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{ |
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|
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if (sig == SIGUSR1) |
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flags |= FLAG_SIGUSR1; |
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else |
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fatal(ERROR_SIGNAL, "killed by signal %d\n", sig); |
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} |
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|
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|
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/* |
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* Open temporary debug file and associate a stream with the returned file |
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* descriptor. |
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*/ |
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int |
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debug_start(void) |
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{ |
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static char dt[] = PATHNAME_DEBUG; |
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int fd; |
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|
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if (!opts.debug) |
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return 0; |
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|
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fd = mkstemp(dt); |
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|
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if (fd != -1) { |
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debugfp = fdopen(fd, "w"); |
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if (debugfp == NULL) { |
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error("opening debug file %s: %s\n", opts.logfile, |
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strerror(errno)); |
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return ERROR_TRIVIAL; |
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} |
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} |
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return 0; |
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} |
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|
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|
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/* |
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* Close temporary debug file. |
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*/ |
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int |
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debug_stop(void) |
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{ |
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|
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if (debugfp == NULL) |
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return 0; |
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else |
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return fclose(debugfp); |
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} |
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|
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|
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/* |
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* Open the file for saving of logging information. |
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*/ |
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int |
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log_start(void) |
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{ |
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|
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if (*opts.logfile == '\0') |
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return 0; /* Logging not enabled. */ |
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|
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debug("log file: '%s'\n", opts.logfile); |
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|
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if (create_file(opts.logfile, S_IRUSR | S_IWUSR)) |
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return ERROR_TRIVIAL; |
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|
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logfp = fopen(opts.logfile, "a"); |
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if (logfp == NULL) { |
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error("opening log file %s: %s\n", opts.logfile, |
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strerror(errno)); |
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return ERROR_TRIVIAL; |
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} |
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return 0; |
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} |
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|
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|
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/* |
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* Close the log file. |
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*/ |
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int |
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log_stop(void) |
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{ |
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|
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if (logfp == NULL) |
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return 0; |
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else |
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return fclose(logfp); |
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} |
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|
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|
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/* |
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* Prepares the log entry to be saved through continues calls, and writes it to |
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* logfile. |
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*/ |
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void |
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log_info(int flag, void *ptr) |
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{ |
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static struct { |
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char *account; |
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char *mbox; |
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char *filter; |
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unsigned int *action; |
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char *destaccount; |
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char *destmbox; |
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char *hdrs; |
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} inf = { |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL |
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}; |
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|
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if (logfp == NULL) |
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return; |
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|
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switch (flag) { |
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case LOG_PREAMBLE: |
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fprintf(logfp, "%s %s %s %s %s%s %s\n", log_time(), |
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inf.account, inf.mbox, inf.filter, |
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(*inf.action == ACTION_DELETE ? "delete" : |
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*inf.action == ACTION_COPY ? "copy" : |
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*inf.action == ACTION_MOVE ? "move" : |
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*inf.action == ACTION_RCOPY ? "rcopy " : |
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*inf.action == ACTION_RMOVE ? "rmove " : |
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*inf.action == ACTION_FLAG_ADD || |
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*inf.action == ACTION_FLAG_REMOVE || |
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*inf.action == ACTION_FLAG_REPLACE ? "flag" : |
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*inf.action == ACTION_LIST ? "list" : |
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"unknown "), |
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(inf.destaccount == NULL ? "" : inf.destaccount), |
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(*inf.destmbox == '\0' ? "" : inf.destmbox)); |
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fflush(logfp); |
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break; |
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case LOG_ACCOUNT: |
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inf.account = (char *)ptr; |
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break; |
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case LOG_MBOX: |
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inf.mbox = (char *)ptr; |
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break; |
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case LOG_FILTER: |
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inf.filter = (char *)ptr; |
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break; |
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case LOG_ACTION: |
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inf.action = (unsigned int *)ptr; |
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break; |
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case LOG_DEST_ACCOUNT: |
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if (ptr == NULL) |
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inf.destaccount = NULL; |
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else |
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inf.destaccount = ((account_t *) ptr)->key; |
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break; |
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case LOG_DEST_MBOX: |
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inf.destmbox = (char *)ptr; |
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break; |
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case LOG_HEADER: |
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if (ptr) { |
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inf.hdrs = (char *)ptr; |
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fputc('\t', logfp); |
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while (*inf.hdrs != '\0') { |
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if (*inf.hdrs == '\r') { |
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fputc('\n', logfp); |
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if (*(inf.hdrs + 2) != '\0') |
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fputc('\t', logfp); |
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inf.hdrs += 2; |
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} else |
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fputc(*(inf.hdrs++), logfp); |
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} |
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} |
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fflush(logfp); |
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break; |
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} |
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} |
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|
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|
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/* |
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* Return current local time and date. |
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*/ |
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char * |
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log_time(void) |
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{ |
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char *ct; |
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time_t t; |
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|
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t = time(NULL); |
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|
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ct = ctime(&t); |
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*(strchr(ct, '\n')) = '\0'; |
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|
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return ct; |
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} |