+/*********************************************************************/
+
+int ignore_entry(const char *name) {
+ return
+ /* strcmp(name, ".") == 0 || */
+ /* strcmp(name, "..") == 0 || */
+ (name[0] == '.' && name[1] != '/');
+}
+
+int mbox_line_match_search(struct search_condition *condition,
+ int mbox_id, char *mbox_value) {
+ return
+ (condition->field_id == mbox_id ||
+ (condition->field_id == ID_PARTICIPANT && (mbox_id == ID_FROM || mbox_id == ID_TO)))
+ &&
+ regexec(&condition->regexp, mbox_value, 0, 0, 0) == 0;
+}
+
+void search_in_db(FILE *db_file,
+ int nb_search_conditions,
+ struct search_condition *search_conditions,
+ FILE *output_file) {
+
+ int hits[MAX_NB_SEARCH_CONDITIONS];
+ char raw_db_line[BUFFER_SIZE];
+ char raw_mbox_line[BUFFER_SIZE];
+ char current_mail_filename[PATH_MAX + 1];
+ unsigned long int current_position_in_mail;
+ char *mbox_name, *mbox_value;
+ int mbox_id;
+ int already_written, m, n;
+ int last_mbox_line_was_empty;
+ int nb_body_conditions, nb_fulfilled_body_conditions;
+
+ current_position_in_mail = 0;
+ already_written = 0;
+
+ for(n = 0; n < nb_search_conditions; n++) { hits[n] = 0; }
+
+ nb_body_conditions = 0;
+ for(n = 0; n < nb_search_conditions; n++) {
+ if(search_conditions[n].field_id == ID_BODY) {
+ nb_body_conditions++;
+ }
+ }
+
+ strcpy(current_mail_filename, "");
+
+ while(fgets(raw_db_line, BUFFER_SIZE, db_file)) {
+ mbox_name = raw_db_line;
+ mbox_value = segment_next_field(raw_db_line);
+
+ if(strcmp("mail", mbox_name) == 0) {
+ char *position_in_file_string;
+ char *mail_filename;
+
+ if(current_mail_filename[0]) {
+
+ /* We first check all conditions but the body ones */
+
+ for(n = 0; n < nb_search_conditions &&
+ ((search_conditions[n].field_id == ID_BODY) ||
+ xor(hits[n], search_conditions[n].negation)); n++);
+
+ if(n == nb_search_conditions) {
+
+ /* all conditions but the body ones are fine, check the body
+ ones */
+
+ nb_fulfilled_body_conditions = 0;
+
+ if(nb_body_conditions > 0) {
+ FILE *mail_file;
+ int header;
+
+ header = 1;
+ mail_file = fopen(current_mail_filename, "r");
+
+ if(!mail_file) {
+ fprintf(stderr,
+ "mymail: Cannot open mbox '%s' for body scan.\n",
+ current_mail_filename);
+ exit(EXIT_FAILURE);
+ }
+
+ fseek(mail_file, current_position_in_mail, SEEK_SET);
+
+ if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
+ while(nb_fulfilled_body_conditions < 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_fulfilled_body_conditions++;
+ }
+ }
+ }
+ }
+
+ if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
+ (last_mbox_line_was_empty && strncmp(raw_mbox_line, "From ", 5) == 0))
+ break;
+ }
+ }
+
+ fclose(mail_file);
+ }
+
+ if(nb_body_conditions == nb_fulfilled_body_conditions) {
+ FILE *mail_file;
+
+ mail_file = fopen(current_mail_filename, "r");
+
+ if(!mail_file) {
+ fprintf(stderr,
+ "mymail: Cannot open mbox '%s' for mail extraction.\n",
+ current_mail_filename);
+ exit(EXIT_FAILURE);
+ }
+
+ fseek(mail_file, current_position_in_mail, SEEK_SET);
+
+ if(fgets(raw_mbox_line, BUFFER_SIZE, mail_file)) {
+ last_mbox_line_was_empty = 1;
+ fprintf(output_file, "%s", raw_mbox_line);
+ while(1) {
+ if(!fgets(raw_mbox_line, BUFFER_SIZE, mail_file) ||
+ (last_mbox_line_was_empty && strncmp(raw_mbox_line, "From ", 5) == 0))
+ break;
+ last_mbox_line_was_empty = (raw_mbox_line[0] == '\n');
+ fprintf(output_file, "%s", raw_mbox_line);
+ }
+ }
+
+ fclose(mail_file);
+ }
+ }
+ }
+
+ for(n = 0; n < nb_search_conditions; n++) { hits[n] = 0; }
+
+ position_in_file_string = mbox_value;
+ mail_filename = segment_next_field(mbox_value);
+ current_position_in_mail = atol(position_in_file_string);
+ strcpy(current_mail_filename, mail_filename);
+
+ remove_eof(current_mail_filename);
+ already_written = 0;
+ }
+
+ else {
+ mbox_id = -1;
+ for(m = 0; (m < MAX_ID) && mbox_id == -1; m++) {
+ if(strncmp(field_names[m], mbox_name, strlen(mbox_name)) == 0) {
+ mbox_id = m;
+ }
+ }
+ for(n = 0; n < nb_search_conditions; n++) {
+ hits[n] |= mbox_line_match_search(&search_conditions[n],
+ mbox_id, mbox_value);
+ }
+ }
+ }
+}
+
+void recursive_search_in_db(const char *entry_name, regex_t *db_filename_regexp,
+ int nb_search_conditions,
+ struct search_condition *search_conditions,
+ FILE *output_file) {
+ DIR *dir;
+ struct dirent *dir_e;
+ struct stat sb;
+ char raw_db_line[BUFFER_SIZE];
+ char subname[PATH_MAX + 1];
+
+ if(lstat(entry_name, &sb) != 0) {
+ fprintf(stderr,
+ "mymail: Cannot stat \"%s\": %s\n",
+ entry_name,
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ dir = opendir(entry_name);
+
+ if(dir) {
+ while((dir_e = readdir(dir))) {
+ if(!ignore_entry(dir_e->d_name)) {
+ snprintf(subname, PATH_MAX, "%s/%s", entry_name, dir_e->d_name);
+ recursive_search_in_db(subname, db_filename_regexp,
+ nb_search_conditions, search_conditions,
+ output_file);
+ }
+ }
+ closedir(dir);
+ }
+
+ else {
+ const char *s = entry_name, *filename = entry_name;
+ while(*s) { if(*s == '/') { filename = s+1; } s++; }
+
+ if(regexec(db_filename_regexp, filename, 0, 0, 0) == 0) {
+ FILE *db_file = fopen(entry_name, "r");
+
+ if(!quiet) {
+ printf("Searching in '%s' ... ", entry_name);
+ }
+
+ if(!db_file) {
+ fprintf(stderr,
+ "mymail: Cannot open \"%s\" for reading: %s\n",
+ db_filename,
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ if(fgets(raw_db_line, BUFFER_SIZE, db_file)) {
+ if(strncmp(raw_db_line, MYMAIL_DB_MAGIC_TOKEN, strlen(MYMAIL_DB_MAGIC_TOKEN))) {
+ fprintf(stderr,
+ "mymail: Header line in '%s' does not match the mymail db format.\n",
+ entry_name);
+ exit(EXIT_FAILURE);
+ }
+ } else {
+ fprintf(stderr,
+ "mymail: Cannot read the header line in '%s'.\n",
+ entry_name);
+ exit(EXIT_FAILURE);
+ }
+
+ search_in_db(db_file, nb_search_conditions, search_conditions, output_file);
+
+ fclose(db_file);
+
+ if(!quiet) {
+ printf("done.\n");
+ }
+ }
+ }
+}
+
+/*********************************************************************/
+
+void index_one_mbox_line(int nb_fields_to_parse, struct parsable_field *fields_to_parse,
+ char *raw_mbox_line, FILE *db_file) {
+ regmatch_t matches;
+ int f;
+ for(f = 0; f < nb_fields_to_parse; f++) {
+ if(regexec(&fields_to_parse[f].regexp, raw_mbox_line, 1, &matches, 0) == 0) {
+ fprintf(db_file, "%s %s\n",
+ field_names[fields_to_parse[f].id],
+ raw_mbox_line + matches.rm_eo);
+ }
+ }
+}