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goaccess.c
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/**
* goaccess.c -- main log analyzer
* ______ ___
* / ____/___ / | _____________ __________
* / / __/ __ \/ /| |/ ___/ ___/ _ \/ ___/ ___/
* / /_/ / /_/ / ___ / /__/ /__/ __(__ |__ )
* \____/\____/_/ |_\___/\___/\___/____/____/
*
* The MIT License (MIT)
* Copyright (c) 2009-2020 Gerardo Orellana <hello @ goaccess.io>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#define _FILE_OFFSET_BITS 64
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <locale.h>
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <fcntl.h>
#include <grp.h>
#include <pthread.h>
#include <pwd.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <inttypes.h>
#include "gkhash.h"
#ifdef HAVE_GEOLOCATION
#include "geoip1.h"
#endif
#include "browsers.h"
#include "csv.h"
#include "error.h"
#include "gdashboard.h"
#include "gdns.h"
#include "gholder.h"
#include "goaccess.h"
#include "gwsocket.h"
#include "json.h"
#include "options.h"
#include "output.h"
#include "util.h"
#include "websocket.h"
#include "xmalloc.h"
GConf conf = {
.append_method = 1,
.append_protocol = 1,
.hl_header = 1,
.num_tests = 10,
};
/* Loading/Spinner */
GSpinner *parsing_spinner;
/* active reverse dns flag */
int active_gdns = 0;
/* WebSocket server - writer and reader threads */
static GWSWriter *gwswriter;
static GWSReader *gwsreader;
/* Dashboard data structure */
static GDash *dash;
/* Data holder structure */
static GHolder *holder;
/* Old signal mask */
static sigset_t oldset;
/* Curses windows */
static WINDOW *header_win, *main_win;
static int main_win_height = 0;
/* *INDENT-OFF* */
static GScroll gscroll = {
{
{0, 0}, /* VISITORS { scroll, offset} */
{0, 0}, /* REQUESTS { scroll, offset} */
{0, 0}, /* REQUESTS_STATIC { scroll, offset} */
{0, 0}, /* NOT_FOUND { scroll, offset} */
{0, 0}, /* HOSTS { scroll, offset} */
{0, 0}, /* OS { scroll, offset} */
{0, 0}, /* BROWSERS { scroll, offset} */
{0, 0}, /* VISIT_TIMES { scroll, offset} */
{0, 0}, /* VIRTUAL_HOSTS { scroll, offset} */
{0, 0}, /* REFERRERS { scroll, offset} */
{0, 0}, /* REFERRING_SITES { scroll, offset} */
{0, 0}, /* KEYPHRASES { scroll, offset} */
{0, 0}, /* STATUS_CODES { scroll, offset} */
{0, 0}, /* REMOTE_USER { scroll, offset} */
{0, 0}, /* CACHE_STATUS { scroll, offset} */
#ifdef HAVE_GEOLOCATION
{0, 0}, /* GEO_LOCATION { scroll, offset} */
#endif
{0, 0}, /* MIME_TYPE { scroll, offset} */
{0, 0}, /* TLS_TYPE { scroll, offset} */
},
0, /* current module */
0, /* main dashboard scroll */
0, /* expanded flag */
};
/* *INDENT-ON* */
/* Free malloc'd holder */
static void
house_keeping_holder (void) {
/* REVERSE DNS THREAD */
pthread_mutex_lock (&gdns_thread.mutex);
/* kill dns pthread */
active_gdns = 0;
/* clear holder structure */
free_holder (&holder);
/* clear reverse dns queue */
gdns_free_queue ();
/* clear the whole storage */
free_storage ();
pthread_mutex_unlock (&gdns_thread.mutex);
}
/* Free malloc'd data across the whole program */
static void
house_keeping (void) {
house_keeping_holder ();
/* DASHBOARD */
if (dash && !conf.output_stdout) {
free_dashboard (dash);
reset_find ();
}
/* GEOLOCATION */
#ifdef HAVE_GEOLOCATION
geoip_free ();
#endif
/* INVALID REQUESTS */
if (conf.invalid_requests_log) {
LOG_DEBUG (("Closing invalid requests log.\n"));
invalid_log_close ();
}
/* UNKNOWNS */
if (conf.unknowns_log) {
LOG_DEBUG (("Closing unknowns log.\n"));
unknowns_log_close ();
}
/* CONFIGURATION */
free_formats ();
free_browsers_hash ();
if (conf.debug_log) {
LOG_DEBUG (("Bye.\n"));
dbg_log_close ();
}
if (conf.fifo_in)
free ((char *) conf.fifo_in);
if (conf.fifo_out)
free ((char *) conf.fifo_out);
/* clear spinner */
free (parsing_spinner);
/* free colors */
free_color_lists ();
/* free cmd arguments */
free_cmd_args ();
/* WebSocket writer */
free (gwswriter);
/* WebSocket reader */
free (gwsreader);
}
static void
cleanup (int ret) {
/* done, restore tty modes and reset terminal into
* non-visual mode */
if (!conf.output_stdout)
endwin ();
/* unable to process valid data */
if (ret)
output_logerrors ();
house_keeping ();
}
/* Drop permissions to the user specified. */
static void
drop_permissions (void) {
struct passwd *pw;
errno = 0;
if ((pw = getpwnam (conf.username)) == NULL) {
if (errno == 0)
FATAL ("No such user %s", conf.username);
FATAL ("Unable to retrieve user %s: %s", conf.username, strerror (errno));
}
if (setgroups (1, &pw->pw_gid) == -1)
FATAL ("setgroups: %s", strerror (errno));
if (setgid (pw->pw_gid) == -1)
FATAL ("setgid: %s", strerror (errno));
if (setuid (pw->pw_uid) == -1)
FATAL ("setuid: %s", strerror (errno));
}
/* Open the pidfile whose name is specified in the given path and write
* the daemonized given pid. */
static void
write_pid_file (const char *path, pid_t pid) {
FILE *pidfile;
if (!path)
return;
if ((pidfile = fopen (path, "w"))) {
fprintf (pidfile, "%d", pid);
fclose (pidfile);
} else {
FATAL ("Unable to open the specified pid file. %s", strerror (errno));
}
}
/* Set GoAccess to run as a daemon */
static void
daemonize (void) {
pid_t pid, sid;
int fd;
/* Clone ourselves to make a child */
pid = fork ();
if (pid < 0)
exit (EXIT_FAILURE);
if (pid > 0) {
write_pid_file (conf.pidfile, pid);
printf ("Daemonized GoAccess: %d\n", pid);
exit (EXIT_SUCCESS);
}
umask (0);
/* attempt to create our own process group */
sid = setsid ();
if (sid < 0) {
LOG_DEBUG (("Unable to setsid: %s.\n", strerror (errno)));
exit (EXIT_FAILURE);
}
/* set the working directory to the root directory.
* requires the user to specify absolute paths */
if (chdir ("/") < 0) {
LOG_DEBUG (("Unable to set chdir: %s.\n", strerror (errno)));
exit (EXIT_FAILURE);
}
/* redirect fd's 0,1,2 to /dev/null */
/* Note that the user will need to use --debug-file for log output */
if ((fd = open ("/dev/null", O_RDWR, 0)) == -1) {
LOG_DEBUG (("Unable to open /dev/null: %s.\n", strerror (errno)));
exit (EXIT_FAILURE);
}
dup2 (fd, STDIN_FILENO);
dup2 (fd, STDOUT_FILENO);
dup2 (fd, STDERR_FILENO);
if (fd > STDERR_FILENO) {
close (fd);
}
}
/* Extract data from the given module hash structure and allocate +
* load data from the hash table into an instance of GHolder */
static void
allocate_holder_by_module (GModule module) {
GRawData *raw_data;
/* extract data from the corresponding hash table */
raw_data = parse_raw_data (module);
if (!raw_data) {
LOG_DEBUG (("raw data is NULL for module: %d.\n", module));
return;
}
load_holder_data (raw_data, holder + module, module, module_sort[module]);
}
/* Iterate over all modules/panels and extract data from hash
* structures and load it into an instance of GHolder */
static void
allocate_holder (void) {
size_t idx = 0;
holder = new_gholder (TOTAL_MODULES);
FOREACH_MODULE (idx, module_list) {
allocate_holder_by_module (module_list[idx]);
}
}
/* Extract data from the modules GHolder structure and load it into
* the terminal dashboard */
static void
allocate_data_by_module (GModule module, int col_data) {
int size = 0, max_choices = get_max_choices ();
dash->module[module].head = module_to_head (module);
dash->module[module].desc = module_to_desc (module);
size = holder[module].idx;
if (gscroll.expanded && module == gscroll.current) {
size = size > max_choices ? max_choices : holder[module].idx;
} else {
size = holder[module].idx > col_data ? col_data : holder[module].idx;
}
dash->module[module].alloc_data = size; /* data allocated */
dash->module[module].ht_size = holder[module].ht_size; /* hash table size */
dash->module[module].idx_data = 0;
dash->module[module].pos_y = 0;
if (gscroll.expanded && module == gscroll.current)
dash->module[module].dash_size = DASH_EXPANDED;
else
dash->module[module].dash_size = DASH_COLLAPSED;
dash->total_alloc += dash->module[module].dash_size;
pthread_mutex_lock (&gdns_thread.mutex);
load_data_to_dash (&holder[module], dash, module, &gscroll);
pthread_mutex_unlock (&gdns_thread.mutex);
}
/* Iterate over all modules/panels and extract data from GHolder
* structure and load it into the terminal dashboard */
static void
allocate_data (void) {
GModule module;
int col_data = get_num_collapsed_data_rows ();
size_t idx = 0;
dash = new_gdash ();
FOREACH_MODULE (idx, module_list) {
module = module_list[idx];
allocate_data_by_module (module, col_data);
}
}
static void
clean_stdscrn (void) {
int row, col;
getmaxyx (stdscr, row, col);
draw_header (stdscr, "", "%s", row - 1, 0, col, color_default);
}
/* A wrapper to render all windows within the dashboard. */
static void
render_screens (uint32_t offset) {
GColors *color = get_color (COLOR_DEFAULT);
int row, col;
char time_str_buf[32];
getmaxyx (stdscr, row, col);
term_size (main_win, &main_win_height);
generate_time ();
strftime (time_str_buf, sizeof (time_str_buf), "%d/%b/%Y:%T", &now_tm);
draw_header (stdscr, "", "%s", row - 1, 0, col, color_default);
wattron (stdscr, color->attr | COLOR_PAIR (color->pair->idx));
mvaddstr (row - 1, 1, T_HELP_ENTER);
mvprintw (row - 1, col / 2 - 10, "%" PRIu32 "/r - %s", offset, time_str_buf);
mvaddstr (row - 1, col - 6 - strlen (T_QUIT), T_QUIT);
mvprintw (row - 1, col - 5, "%s", GO_VERSION);
wattroff (stdscr, color->attr | COLOR_PAIR (color->pair->idx));
refresh ();
/* call general stats header */
display_general (header_win, holder);
wrefresh (header_win);
/* display active label based on current module */
update_active_module (header_win, gscroll.current);
display_content (main_win, dash, &gscroll);
}
/* Collapse the current expanded module */
static int
collapse_current_module (void) {
if (!gscroll.expanded)
return 1;
gscroll.expanded = 0;
reset_scroll_offsets (&gscroll);
free_dashboard (dash);
allocate_data ();
return 0;
}
/* Display message a the bottom of the terminal dashboard that panel
* is disabled */
static void
disabled_panel_msg (GModule module) {
const char *lbl = module_to_label (module);
int row, col;
getmaxyx (stdscr, row, col);
draw_header (stdscr, lbl, ERR_PANEL_DISABLED, row - 1, 0, col, color_error);
}
/* Set the current module/panel */
static int
set_module_to (GScroll * scrll, GModule module) {
if (get_module_index (module) == -1) {
disabled_panel_msg (module);
return 1;
}
/* scroll to panel */
if (!conf.no_tab_scroll)
gscroll.dash = get_module_index (module) * DASH_COLLAPSED;
/* reset expanded module */
collapse_current_module ();
scrll->current = module;
return 0;
}
/* Scroll expanded module or terminal dashboard to the top */
static void
scroll_to_first_line (void) {
if (!gscroll.expanded)
gscroll.dash = 0;
else {
gscroll.module[gscroll.current].scroll = 0;
gscroll.module[gscroll.current].offset = 0;
}
}
/* Scroll expanded module or terminal dashboard to the last row */
static void
scroll_to_last_line (void) {
int exp_size = get_num_expanded_data_rows ();
int scrll = 0, offset = 0;
if (!gscroll.expanded)
gscroll.dash = dash->total_alloc - main_win_height;
else {
scrll = dash->module[gscroll.current].idx_data - 1;
if (scrll >= exp_size && scrll >= offset + exp_size)
offset = scrll < exp_size - 1 ? 0 : scrll - exp_size + 1;
gscroll.module[gscroll.current].scroll = scrll;
gscroll.module[gscroll.current].offset = offset;
}
}
/* Load the user-agent window given the selected IP */
static void
load_ip_agent_list (void) {
int type_ip = 0;
/* make sure we have a valid IP */
int sel = gscroll.module[gscroll.current].scroll;
GDashData item = dash->module[HOSTS].data[sel];
if (!invalid_ipaddr (item.metrics->data, &type_ip))
load_agent_list (main_win, item.metrics->data);
}
/* Expand the selected module */
static void
expand_current_module (void) {
if (gscroll.expanded && gscroll.current == HOSTS) {
load_ip_agent_list ();
return;
}
/* expanded, nothing to do... */
if (gscroll.expanded)
return;
reset_scroll_offsets (&gscroll);
gscroll.expanded = 1;
free_holder_by_module (&holder, gscroll.current);
free_dashboard (dash);
allocate_holder_by_module (gscroll.current);
allocate_data ();
}
/* Expand the clicked module/panel given the Y event coordinate. */
static int
expand_module_from_ypos (int y) {
/* ignore header/footer clicks */
if (y < MAX_HEIGHT_HEADER || y == LINES - 1)
return 1;
if (set_module_from_mouse_event (&gscroll, dash, y))
return 1;
reset_scroll_offsets (&gscroll);
gscroll.expanded = 1;
free_holder_by_module (&holder, gscroll.current);
free_dashboard (dash);
allocate_holder_by_module (gscroll.current);
allocate_data ();
return 0;
}
/* Expand the clicked module/panel */
static int
expand_on_mouse_click (void) {
int ok_mouse;
MEVENT event;
ok_mouse = getmouse (&event);
if (!conf.mouse_support || ok_mouse != OK)
return 1;
if (event.bstate & BUTTON1_CLICKED)
return expand_module_from_ypos (event.y);
return 1;
}
/* Scroll dowm expanded module to the last row */
static void
scroll_down_expanded_module (void) {
int exp_size = get_num_expanded_data_rows ();
int *scroll_ptr, *offset_ptr;
scroll_ptr = &gscroll.module[gscroll.current].scroll;
offset_ptr = &gscroll.module[gscroll.current].offset;
if (!gscroll.expanded)
return;
if (*scroll_ptr >= dash->module[gscroll.current].idx_data - 1)
return;
++(*scroll_ptr);
if (*scroll_ptr >= exp_size && *scroll_ptr >= *offset_ptr + exp_size)
++(*offset_ptr);
}
/* Scroll up expanded module */
static void
scroll_up_expanded_module (void) {
int *scroll_ptr, *offset_ptr;
scroll_ptr = &gscroll.module[gscroll.current].scroll;
offset_ptr = &gscroll.module[gscroll.current].offset;
if (!gscroll.expanded)
return;
if (*scroll_ptr <= 0)
return;
--(*scroll_ptr);
if (*scroll_ptr < *offset_ptr)
--(*offset_ptr);
}
/* Scroll up terminal dashboard */
static void
scroll_up_dashboard (void) {
gscroll.dash--;
}
/* Page up expanded module */
static void
page_up_module (void) {
int exp_size = get_num_expanded_data_rows ();
int *scroll_ptr, *offset_ptr;
scroll_ptr = &gscroll.module[gscroll.current].scroll;
offset_ptr = &gscroll.module[gscroll.current].offset;
if (!gscroll.expanded)
return;
/* decrease scroll and offset by exp_size */
*scroll_ptr -= exp_size;
if (*scroll_ptr < 0)
*scroll_ptr = 0;
if (*scroll_ptr < *offset_ptr)
*offset_ptr -= exp_size;
if (*offset_ptr <= 0)
*offset_ptr = 0;
}
/* Page down expanded module */
static void
page_down_module (void) {
int exp_size = get_num_expanded_data_rows ();
int *scroll_ptr, *offset_ptr;
scroll_ptr = &gscroll.module[gscroll.current].scroll;
offset_ptr = &gscroll.module[gscroll.current].offset;
if (!gscroll.expanded)
return;
*scroll_ptr += exp_size;
if (*scroll_ptr >= dash->module[gscroll.current].idx_data - 1)
*scroll_ptr = dash->module[gscroll.current].idx_data - 1;
if (*scroll_ptr >= exp_size && *scroll_ptr >= *offset_ptr + exp_size)
*offset_ptr += exp_size;
if (*offset_ptr + exp_size >= dash->module[gscroll.current].idx_data - 1)
*offset_ptr = dash->module[gscroll.current].idx_data - exp_size;
if (*scroll_ptr < exp_size - 1)
*offset_ptr = 0;
}
/* Create a new find dialog window and render it. Upon closing the
* window, dashboard is refreshed. */
static int
render_search_dialog (int search) {
if (render_find_dialog (main_win, &gscroll))
return 1;
pthread_mutex_lock (&gdns_thread.mutex);
search = perform_next_find (holder, &gscroll);
pthread_mutex_unlock (&gdns_thread.mutex);
if (search != 0)
return 1;
free_dashboard (dash);
allocate_data ();
return 0;
}
/* Search for the next occurrence within the dashboard structure */
static int
search_next_match (int search) {
pthread_mutex_lock (&gdns_thread.mutex);
search = perform_next_find (holder, &gscroll);
pthread_mutex_unlock (&gdns_thread.mutex);
if (search != 0)
return 1;
free_dashboard (dash);
allocate_data ();
return 0;
}
/* Update holder structure and dashboard screen */
static void
tail_term (void) {
pthread_mutex_lock (&gdns_thread.mutex);
free_holder (&holder);
pthread_cond_broadcast (&gdns_thread.not_empty);
pthread_mutex_unlock (&gdns_thread.mutex);
free_dashboard (dash);
allocate_holder ();
allocate_data ();
term_size (main_win, &main_win_height);
}
static void
tail_html (void) {
char *json = NULL;
pthread_mutex_lock (&gdns_thread.mutex);
free_holder (&holder);
pthread_cond_broadcast (&gdns_thread.not_empty);
pthread_mutex_unlock (&gdns_thread.mutex);
allocate_holder ();
pthread_mutex_lock (&gdns_thread.mutex);
json = get_json (holder, 0);
pthread_mutex_unlock (&gdns_thread.mutex);
if (json == NULL)
return;
broadcast_holder (gwswriter->fd, json, strlen (json));
free (json);
}
/* Fast-forward latest JSON data when client connection is opened. */
static void
fast_forward_client (int listener) {
char *json = NULL;
pthread_mutex_lock (&gdns_thread.mutex);
json = get_json (holder, 0);
pthread_mutex_unlock (&gdns_thread.mutex);
if (json == NULL)
return;
pthread_mutex_lock (&gwswriter->mutex);
send_holder_to_client (gwswriter->fd, listener, json, strlen (json));
pthread_mutex_unlock (&gwswriter->mutex);
free (json);
}
/* Start reading data coming from the client side through the
* WebSocket server. */
void
read_client (void *ptr_data) {
GWSReader *reader = (GWSReader *) ptr_data;
/* check we have a fifo for reading */
if (reader->fd == -1)
return;
pthread_mutex_lock (&reader->mutex);
set_self_pipe (reader->self_pipe);
pthread_mutex_unlock (&reader->mutex);
while (1) {
/* poll(2) will block */
if (read_fifo (reader, fast_forward_client))
break;
}
close (reader->fd);
}
/* Parse tailed lines */
static void
parse_tail_follow (GLog * glog, FILE * fp) {
#ifdef WITH_GETLINE
char *buf = NULL;
#else
char buf[LINE_BUFFER] = { 0 };
#endif
glog->bytes = 0;
#ifdef WITH_GETLINE
while ((buf = fgetline (fp)) != NULL) {
#else
while (fgets (buf, LINE_BUFFER, fp) != NULL) {
#endif
pthread_mutex_lock (&gdns_thread.mutex);
pre_process_log (glog, buf, 0);
pthread_mutex_unlock (&gdns_thread.mutex);
glog->bytes += strlen (buf);
#ifdef WITH_GETLINE
free (buf);
#endif
/* If the ingress rate is greater than MAX_BATCH_LINES,
* then we break and allow to re-render the UI */
if (++glog->read % MAX_BATCH_LINES == 0)
break;
}
}
static void
verify_inode (FILE * fp, GLog * glog) {
struct stat fdstat;
if (stat (glog->filename, &fdstat) == -1)
FATAL ("Unable to stat the specified log file '%s'. %s", glog->filename, strerror (errno));
glog->size = fdstat.st_size;
/* Either the log got smaller, probably was truncated so start reading from 0
* and reset snippet.
* If the log changed its inode, more likely the log was rotated, so we set
* the initial snippet for the new log for future iterations */
if (fdstat.st_ino != glog->inode || glog->snippet[0] == '\0' || 0 == glog->size) {
glog->length = glog->bytes = 0;
set_initial_persisted_data (glog, fp, glog->filename);
}
glog->inode = fdstat.st_ino;
}
/* Process appended log data
*
* If nothing changed, 1 is returned.
* If log file changed, 0 is returned. */
static int
perform_tail_follow (GLog * glog) {
FILE *fp = NULL;
char buf[READ_BYTES + 1] = { 0 };
uint16_t len = 0;
uint64_t length = 0;
if (glog->filename[0] == '-' && glog->filename[1] == '\0') {
parse_tail_follow (glog, glog->pipe);
/* did we read something from the pipe? */
if (0 == glog->bytes)
return 1;
glog->length += glog->bytes;
goto out;
}
length = file_size (glog->filename);
/* file hasn't changed */
/* ###NOTE: This assumes the log file being read can be of smaller size, e.g.,
* rotated/truncated file or larger when data is appended */
if (length == glog->length)
return 1;
if (!(fp = fopen (glog->filename, "r")))
FATAL ("Unable to read the specified log file '%s'. %s", glog->filename, strerror (errno));
verify_inode (fp, glog);
len = MIN (glog->snippetlen, length);
/* This is not ideal, but maybe the only reliable way to know if the
* current log looks different than our first read/parse */
if ((fread (buf, len, 1, fp)) != 1 && ferror (fp))
FATAL ("Unable to fread the specified log file '%s'", glog->filename);
/* For the case where the log got larger since the last iteration, we attempt
* to compare the first READ_BYTES against the READ_BYTES we had since the last
* parse. If it's different, then it means the file may got truncated but grew
* faster than the last iteration (odd, but possible), so we read from 0* */
if (glog->snippet[0] != '\0' && buf[0] != '\0' && memcmp (glog->snippet, buf, len) != 0)
glog->length = glog->bytes = 0;
if (!fseeko (fp, glog->length, SEEK_SET))
parse_tail_follow (glog, fp);
fclose (fp);
glog->length += glog->bytes;
/* insert the inode of the file parsed and the last line parsed */
if (glog->inode) {
glog->lp.line = glog->read;
glog->lp.size = glog->size;
ht_insert_last_parse (glog->inode, glog->lp);
}
out:
return 0;
}
/* Loop over and perform a follow for the given logs */
static void
tail_loop_html (Logs * logs) {
struct timespec refresh = {
.tv_sec = conf.html_refresh ? conf.html_refresh : HTML_REFRESH,
.tv_nsec = 0,
};
int i = 0, ret = 0;
while (1) {
if (conf.stop_processing)
break;
for (i = 0; i < logs->size; ++i)
ret = perform_tail_follow (&logs->glog[i]); /* 0.2 secs */
if (0 == ret)
tail_html ();
if (nanosleep (&refresh, NULL) == -1 && errno != EINTR)
FATAL ("nanosleep: %s", strerror (errno));
}
}
/* Entry point to start processing the HTML output */
static void
process_html (Logs * logs, const char *filename) {
/* render report */
pthread_mutex_lock (&gdns_thread.mutex);
output_html (holder, filename);
pthread_mutex_unlock (&gdns_thread.mutex);
/* not real time? */
if (!conf.real_time_html)
return;
/* ignore loading from disk */
if (logs->load_from_disk_only)
return;
pthread_mutex_lock (&gwswriter->mutex);
gwswriter->fd = open_fifoin ();
pthread_mutex_unlock (&gwswriter->mutex);
/* open fifo for write */
if (gwswriter->fd == -1)
return;
set_ready_state ();
tail_loop_html (logs);
close (gwswriter->fd);
}
/* Iterate over available panels and advance the panel pointer. */
static int
next_module (void) {
int next = -1;
if ((next = get_next_module (gscroll.current)) == -1)
return 1;
gscroll.current = next;
if (!conf.no_tab_scroll)
gscroll.dash = get_module_index (gscroll.current) * DASH_COLLAPSED;
return 0;
}
/* Iterate over available panels and rewind the panel pointer. */
static int
previous_module (void) {
int prev = -1;
if ((prev = get_prev_module (gscroll.current)) == -1)
return 1;
gscroll.current = prev;
if (!conf.no_tab_scroll)
gscroll.dash = get_module_index (gscroll.current) * DASH_COLLAPSED;
return 0;
}
/* Perform several curses operations upon resizing the terminal. */
static void
window_resize (void) {
endwin ();
refresh ();
werase (header_win);
werase (main_win);
werase (stdscr);
term_size (main_win, &main_win_height);
refresh ();
}
/* Create a new sort dialog window and render it. Upon closing the
* window, dashboard is refreshed. */
static void
render_sort_dialog (void) {
load_sort_win (main_win, gscroll.current, &module_sort[gscroll.current]);
pthread_mutex_lock (&gdns_thread.mutex);
free_holder (&holder);
pthread_cond_broadcast (&gdns_thread.not_empty);
pthread_mutex_unlock (&gdns_thread.mutex);
free_dashboard (dash);
allocate_holder ();
allocate_data ();
}
static void
term_tail_logs (Logs * logs) {
struct timespec ts = {.tv_sec = 0,.tv_nsec = 200000000 }; /* 0.2 seconds */
uint32_t offset = 0;
int i;
for (i = 0; i < logs->size; ++i) {
if (perform_tail_follow (&logs->glog[i]) != 0)
continue;
tail_term ();
offset = *logs->processed - logs->offset;
render_screens (offset);
if (nanosleep (&ts, NULL) == -1 && errno != EINTR) {
FATAL ("nanosleep: %s", strerror (errno));
}
}
}
/* Interfacing with the keyboard */
static void