-/*
- * $Id$
- *
- * Licence: http://www.opensource.org/licenses/bsd-license.php
- * author: mac@calmar.ws
- *
- * Modified for use in Conky by Brenden Matthews
+/* Conky, a system monitor, based on torsmo
+ *
+ * Any original torsmo code is licensed under the BSD license
+ *
+ * All code written since the fork of torsmo is licensed under the GPL
+ *
+ * Please see COPYING for details
+ *
+ * Copyright (c) 2006 Marco Candrian <mac@calmar.ws>
+ * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
+ * (see AUTHORS)
+ * All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
- * Description:
- * scanning from top to bottom on a mbox
- * The output as follows:
- * F: FROM_LENGHT S: SUBJECT_LENGHT
- * (PRINT_MAILS or -n NR times)
*/
#include "conky.h"
+#include "logging.h"
+#include "mail.h"
#include <sys/stat.h>
+#include <sys/time.h>
#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
#include "mboxscan.h"
#define FROM_WIDTH 10
#define SUBJECT_WIDTH 22
#define PRINT_MAILS 5
+#define TIME_DELAY 5
struct ring_list {
char *from;
struct ring_list *next;
};
+static time_t last_ctime; /* needed for mutt at least */
+static time_t last_mtime; /* not sure what to test: testing both now */
+static double last_update;
+
+static int args_ok = 0;
+static int from_width;
+static int subject_width;
+static int print_mails;
+static int time_delay;
+
+static char mbox_mail_spool[DEFAULT_TEXT_BUFFER_SIZE];
+
void mbox_scan(char *args, char *output, size_t max_len)
{
int i, u, flag;
- int from_width, subject_width, print_mails;
+ int force_rescan = 0;
char buf[text_buffer_size];
+ struct stat statbuf;
+ struct ring_list *curr = 0, *prev = 0, *startlist = 0;
+ FILE *fp;
+
+ /* output was set to 1 after malloc'ing in conky.c */
+ /* -> beeing able to test it here for catching SIGUSR1 */
+ if (output[0] == 1) {
+ force_rescan = 1;
+ output[0] = '\0';
+ }
+
+ if (!args_ok || force_rescan) {
+
+ char *substr = strstr(args, "-n");
- char *substr = strstr(args, "-n");
- if (substr) {
- if (sscanf(substr, "-n %i", &print_mails) != 1) {
+ if (substr) {
+ if (sscanf(substr, "-n %i", &print_mails) != 1) {
+ print_mails = PRINT_MAILS;
+ }
+ } else {
print_mails = PRINT_MAILS;
}
- } else {
- print_mails = PRINT_MAILS;
- }
- substr = strstr(args, "-fw");
- if (substr) {
- if (sscanf(substr, "-fw %i", &from_width) != 1) {
+ if (print_mails < 1) {
+ print_mails = 1;
+ }
+
+ substr = strstr(args, "-t");
+ if (substr) {
+ if (sscanf(substr, "-t %i", &time_delay) != 1) {
+ time_delay = TIME_DELAY;
+ }
+ } else {
+ time_delay = TIME_DELAY;
+ }
+
+ substr = strstr(args, "-fw");
+ if (substr) {
+ if (sscanf(substr, "-fw %i", &from_width) != 1) {
+ from_width = FROM_WIDTH;
+ }
+ } else {
from_width = FROM_WIDTH;
}
- } else {
- from_width = FROM_WIDTH;
- }
- substr = strstr(args, "-sw");
- if (substr) {
- if (sscanf(substr, "-sw %i", &subject_width) != 1) {
+
+ substr = strstr(args, "-sw");
+ if (substr) {
+ if (sscanf(substr, "-sw %i", &subject_width) != 1) {
+ subject_width = SUBJECT_WIDTH;
+ }
+ } else {
subject_width = SUBJECT_WIDTH;
}
- } else {
- subject_width = SUBJECT_WIDTH;
- }
- char current_mail_spool[text_buffer_size];
- if (args[strlen(args) - 1] == '"') { // encapsulated with "'s
- // find first occurrence of "
- strncpy(current_mail_spool, args, text_buffer_size);
- char *start = strchr(current_mail_spool, '"') + 1;
- start[(long)(strrchr(current_mail_spool, '"') - start)] = '\0';
- strncpy(current_mail_spool, start, text_buffer_size);
- } else {
- char *tmp = strtok(args, " ");
- char *start = tmp;
- while (tmp) {
- tmp = strtok(NULL, " ");
- if (tmp) {
- start = tmp;
+ /* encapsulated with "'s find first occurrence of " */
+ if (args[strlen(args) - 1] == '"') {
+ char *start;
+ strncpy(mbox_mail_spool, args, DEFAULT_TEXT_BUFFER_SIZE);
+ start = strchr(mbox_mail_spool, '"') + 1;
+
+ start[(long) (strrchr(mbox_mail_spool, '"') - start)] = '\0';
+ strncpy(mbox_mail_spool, start, DEFAULT_TEXT_BUFFER_SIZE);
+ } else {
+ char *copy_args = strndup(args, text_buffer_size);
+ char *tmp = strtok(copy_args, " ");
+ char *start = tmp;
+
+ while (tmp) {
+ tmp = strtok(NULL, " ");
+ if (tmp) {
+ start = tmp;
+ }
}
+ strncpy(mbox_mail_spool, start, DEFAULT_TEXT_BUFFER_SIZE);
+ free(copy_args);
+ }
+ if (strlen(mbox_mail_spool) < 1) {
+ CRIT_ERR("Usage: ${mboxscan [-n <number of messages to print>] "
+ "[-fw <from width>] [-sw <subject width>] "
+ "[-t <delay in sec> mbox]}");
}
- strncpy(current_mail_spool, start, text_buffer_size);
+
+ /* allowing $MAIL in the config */
+ if (!strcmp(mbox_mail_spool, "$MAIL")) {
+ strcpy(mbox_mail_spool, current_mail_spool);
+ }
+
+ if (stat(mbox_mail_spool, &statbuf)) {
+ CRIT_ERR("can't stat %s: %s", mbox_mail_spool, strerror(errno));
+ }
+ args_ok = 1; /* args-computing necessary only once */
}
- //printf("'%s', %i, %i, %i\n", current_mail_spool, subject_width, from_width, print_mails);
- if (strlen(current_mail_spool) < 1) {
- CRIT_ERR("Usage: ${mboxscan [-n <number of messages to print>] [-fw <from width>] [-sw <subject width>] mbox}");
+
+ /* if time_delay not yet reached, then return */
+ if (current_update_time - last_update < time_delay && !force_rescan) {
+ return;
}
- struct stat statbuf;
+ last_update = current_update_time;
- if (stat(current_mail_spool, &statbuf)) {
- CRIT_ERR("can't stat %s: %s", current_mail_spool, strerror(errno));
+ /* mbox still exists? and get stat-infos */
+ if (stat(mbox_mail_spool, &statbuf)) {
+ ERR("can't stat %s: %s", mbox_mail_spool, strerror(errno));
+ output[0] = '\0'; /* delete any output */
+ return;
}
- /* end - argument checking */
- /* build up double-linked ring-list to hold data, while scanning down the mbox */
- struct ring_list *curr, *prev, *start;
+ /* modification time has not changed, so skip scanning the box */
+ if (statbuf.st_ctime == last_ctime && statbuf.st_mtime == last_mtime
+ && !force_rescan) {
+ return;
+ }
+ last_ctime = statbuf.st_ctime;
+ last_mtime = statbuf.st_mtime;
+
+ /* build up double-linked ring-list to hold data, while scanning down the
+ * mbox */
for (i = 0; i < print_mails; i++) {
- curr = (struct ring_list *)malloc(sizeof(struct ring_list));
- curr->from = (char *)malloc(sizeof(char[from_width + 1]));
- curr->subject = (char *)malloc(sizeof(char[subject_width + 1]));
+ curr = (struct ring_list *) malloc(sizeof(struct ring_list));
+ curr->from = (char *) malloc(sizeof(char[from_width + 1]));
+ curr->subject = (char *) malloc(sizeof(char[subject_width + 1]));
curr->from[0] = '\0';
curr->subject[0] = '\0';
- if (i == 0)
- start = curr;
+ if (i == 0) {
+ startlist = curr;
+ }
if (i > 0) {
curr->previous = prev;
prev->next = curr;
}
/* connect end to start for an endless loop-ring */
- start->previous = curr;
- curr->next = start;
+ startlist->previous = curr;
+ curr->next = startlist;
/* mbox */
- FILE *fp;
-
- fp = fopen(current_mail_spool, "r");
+ fp = fopen(mbox_mail_spool, "r");
if (!fp) {
return;
}
- flag = 1; /* frist find a "From " to set it to 0 for header-sarchings */
+ /* first find a "From " to set it to 0 for header-sarchings */
+ flag = 1;
while (!feof(fp)) {
- if (fgets(buf, text_buffer_size, fp) == NULL)
+ if (fgets(buf, text_buffer_size, fp) == NULL) {
break;
+ }
if (strncmp(buf, "From ", 5) == 0) {
curr = curr->next;
/* skip until \n */
- while (strchr(buf, '\n') == NULL && !feof(fp))
+ while (strchr(buf, '\n') == NULL && !feof(fp)) {
fgets(buf, text_buffer_size, fp);
+ }
flag = 0; /* in the headers now */
continue;
if (buf[0] == '\n') {
/* beyond the headers now (empty line), skip until \n */
/* then search for new mail ("From ") */
- while (strchr(buf, '\n') == NULL && !feof(fp))
+
+ while (strchr(buf, '\n') == NULL && !feof(fp)) {
fgets(buf, text_buffer_size, fp);
+ }
flag = 1; /* in the body now */
continue;
}
if ((strncmp(buf, "X-Status: ", 10) == 0)
- || (strncmp(buf, "Status: R", 9) == 0)) {
+ || (strncmp(buf, "Status: R", 9) == 0)) {
/* Mail was read or something, so skip that message */
flag = 1; /* search for next From */
- curr->subject[0] = '0';
- curr->from[0] = '0';
- curr = curr->previous; /* (will get current again on new 'From ' finding) */
+ curr->subject[0] = '\0';
+ curr->from[0] = '\0';
+ /* (will get current again on new 'From ' finding) */
+ curr = curr->previous;
/* Skip until \n */
- while (strchr(buf, '\n') == NULL && !feof(fp))
+ while (strchr(buf, '\n') == NULL && !feof(fp)) {
fgets(buf, text_buffer_size, fp);
+ }
continue;
}
- /* that covers ^From: and ^from: */
- if (strncmp(buf + 1, "rom: ", 5) == 0) {
+ /* that covers ^From: and ^from: ^From:<tab> */
+ if (strncmp(buf + 1, "rom:", 4) == 0) {
i = 0;
u = 6; /* no "From: " string needed, so skip */
continue;
}
- if (buf[u] == '<' && i > 1) { /* some are: From: <foo@bar.com> */
+ /* some are: From: <foo@bar.com> */
+ if (buf[u] == '<' && i > 1) {
curr->from[i] = '\0';
/* skip until \n */
- while (strchr(buf, '\n') == NULL && !feof(fp))
+ while (strchr(buf, '\n') == NULL && !feof(fp)) {
fgets(buf, text_buffer_size, fp);
+ }
break;
}
if (i >= from_width) {
curr->from[i] = '\0';
/* skip until \n */
- while (strchr(buf, '\n') == NULL && !feof(fp))
+ while (strchr(buf, '\n') == NULL && !feof(fp)) {
fgets(buf, text_buffer_size, fp);
+ }
break;
}
}
}
- /* that covers ^Subject and ^subject */
- if (strncmp(buf + 1, "ubject: ", 8) == 0) {
+ /* that covers ^Subject: and ^subject: and ^Subjec:<tab> */
+ if (strncmp(buf + 1, "ubject:", 7) == 0) {
i = 0;
u = 9; /* no "Subject: " string needed, so skip */
curr->subject[i] = '\0';
/* skip until \n */
- while (strchr(buf, '\n') == NULL && !feof(fp))
+ while (strchr(buf, '\n') == NULL && !feof(fp)) {
fgets(buf, text_buffer_size, fp);
+ }
break;
}
curr->subject[i++] = buf[u++];
}
}
-
}
fclose(fp);
- i = print_mails;
output[0] = '\0';
- while (curr->from[0] != '\0') {
- snprintf(buf, text_buffer_size, "F: %-*s S: %-*s\n", from_width, curr->from, subject_width, curr->subject);
+
+ i = print_mails;
+ while (i) {
+ struct ring_list *tmp;
+ if (curr->from[0] != '\0') {
+ if (i != print_mails) {
+ snprintf(buf, text_buffer_size, "\nF: %-*s S: %-*s", from_width,
+ curr->from, subject_width, curr->subject);
+ } else { /* first time - no \n in front */
+ snprintf(buf, text_buffer_size, "F: %-*s S: %-*s", from_width,
+ curr->from, subject_width, curr->subject);
+ }
+ } else {
+ snprintf(buf, text_buffer_size, "\n");
+ }
strncat(output, buf, max_len - strlen(output));
-/* printf("F: %-*s", from_width, curr->from);
- printf(" S: %-*s\n", subject_width, curr->subject);*/
- free(curr->from);
- free(curr->subject);
- struct ring_list *old = curr;
- free(old);
+
+ tmp = curr;
curr = curr->previous;
- if (--i == 0) {
- break;
- }
+ free(tmp->from);
+ free(tmp->subject);
+ free(tmp);
+
+ i--;
}
}
projects / monky / blobdiff