+int is_a_leading_from_line(int last_mbox_line_was_empty, char *mbox_line) {
+ return
+
+ /*
+
+ The mbox man page in qmail documentation states:
+
+ > The reader should not attempt to take advantage of the fact
+ > that every From_ line (past the beginning of the file) is
+ > preceded by a blank line.
+
+ */
+
+ /* last_mbox_line_was_empty && */
+ strncmp(mbox_line, "From ", 5) == 0 &&
+ regexec(&leading_from_line_regexp, mbox_line, 0, 0, 0) == 0;
+}
+
+int mbox_line_match_search(struct search_condition *condition,
+ int mbox_id, char *mbox_value) {
+
+ if(condition->field_id == ID_INTERVAL) {
+ if(mbox_id == ID_LEADING_LINE) {
+ char *c;
+ time_t t;
+ struct tm tm;
+
+ c = mbox_value;
+ while(*c && *c != ' ') c++; while(*c && *c == ' ') c++;
+ strptime(c, "%a %b %e %k:%M:%S %Y", &tm);
+ t = mktime(&tm);
+
+ return (t >= condition->interval_start &&
+ (condition->interval_stop == 0 ||
+ t <= condition->interval_stop));
+ } else {
+ return 0;
+ }
+ } else {
+ return
+ (
+
+ (condition->field_id == mbox_id)
+
+ ||
+
+ (condition->field_id == ID_PARTICIPANT && (mbox_id == ID_LEADING_LINE ||
+ mbox_id == ID_FROM ||
+ mbox_id == ID_TO))
+ ||
+
+ (condition->field_id == ID_FROM && mbox_id == ID_LEADING_LINE)
+
+ )
+
+ &&
+
+ regexec(&condition->regexp, mbox_value, 0, 0, 0) == 0;
+ }
+}
+
+void update_body_hits(char *mail_filename, int position_in_mail,
+ int nb_search_conditions, struct search_condition *search_conditions,
+ int nb_body_conditions,
+ int *hits) {
+ FILE *mail_file;
+ int header, n;
+ int last_mbox_line_was_empty;
+ char raw_mbox_line[BUFFER_SIZE];
+ int nb_body_hits;
+
+ nb_body_hits = 0;
+
+ header = 1;
+ mail_file = fopen(mail_filename, "r");
+
+ if(!mail_file) {
+ fprintf(stderr,
+ "mymail: Cannot open mbox '%s' for body scan.\n",
+ mail_filename);
+ exit(EXIT_FAILURE);
+ }
+
+ fseek(mail_file, position_in_mail, SEEK_SET);
+
+ if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
+ while(nb_body_hits < nb_body_conditions) {
+ last_mbox_line_was_empty = (raw_mbox_line[0] == '\n');
+
+ if(last_mbox_line_was_empty) { header = 0; }
+
+ if(!header) {
+ for(n = 0; n < nb_search_conditions; n++) {
+ if(search_conditions[n].field_id == ID_BODY && !hits[n]) {
+ hits[n] =
+ (regexec(&search_conditions[n].regexp, raw_mbox_line, 0, 0, 0) == 0);
+ if(hits[n]) {
+ nb_body_hits++;
+ }
+ }
+ }
+ }
+
+ if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
+ (is_a_leading_from_line(last_mbox_line_was_empty, raw_mbox_line)))
+ break;
+ }
+ }
+
+ fclose(mail_file);
+}
+
+void search_in_db(const char *db_filename,
+ int nb_search_conditions,
+ struct search_condition *search_conditions,
+ FILE *output_file) {
+
+ int hits[MAX_NB_SEARCH_CONDITIONS];