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// SPDX-License-Identifier: GPL-3.0-or-later
#include "apps_plugin.h"
// ----------------------------------------------------------------------------
// apps_groups.conf
// aggregate all processes in groups, to have a limited number of dimensions
struct target *get_users_target(uid_t uid) {
struct target *w;
for(w = users_root_target ; w ; w = w->next)
if(w->uid == uid) return w;
w = callocz(sizeof(struct target), 1);
snprintfz(w->compare, MAX_COMPARE_NAME, "%u", uid);
w->comparehash = simple_hash(w->compare);
w->comparelen = strlen(w->compare);
snprintfz(w->id, MAX_NAME, "%u", uid);
w->idhash = simple_hash(w->id);
struct user_or_group_id user_id_to_find = {
.id = {
.uid = uid,
}
};
struct user_or_group_id *user_or_group_id = user_id_find(&user_id_to_find);
if(user_or_group_id && user_or_group_id->name && *user_or_group_id->name)
snprintfz(w->name, MAX_NAME, "%s", user_or_group_id->name);
else {
struct passwd *pw = getpwuid(uid);
if(!pw || !pw->pw_name || !*pw->pw_name)
snprintfz(w->name, MAX_NAME, "%u", uid);
else
snprintfz(w->name, MAX_NAME, "%s", pw->pw_name);
}
strncpyz(w->clean_name, w->name, MAX_NAME);
netdata_fix_chart_name(w->clean_name);
w->uid = uid;
w->next = users_root_target;
users_root_target = w;
debug_log("added uid %u ('%s') target", w->uid, w->name);
return w;
}
struct target *get_groups_target(gid_t gid) {
struct target *w;
for(w = groups_root_target ; w ; w = w->next)
if(w->gid == gid) return w;
w = callocz(sizeof(struct target), 1);
snprintfz(w->compare, MAX_COMPARE_NAME, "%u", gid);
w->comparehash = simple_hash(w->compare);
w->comparelen = strlen(w->compare);
snprintfz(w->id, MAX_NAME, "%u", gid);
w->idhash = simple_hash(w->id);
struct user_or_group_id group_id_to_find = {
.id = {
.gid = gid,
}
};
struct user_or_group_id *group_id = group_id_find(&group_id_to_find);
if(group_id && group_id->name && *group_id->name) {
snprintfz(w->name, MAX_NAME, "%s", group_id->name);
}
else {
struct group *gr = getgrgid(gid);
if(!gr || !gr->gr_name || !*gr->gr_name)
snprintfz(w->name, MAX_NAME, "%u", gid);
else
snprintfz(w->name, MAX_NAME, "%s", gr->gr_name);
}
strncpyz(w->clean_name, w->name, MAX_NAME);
netdata_fix_chart_name(w->clean_name);
w->gid = gid;
w->next = groups_root_target;
groups_root_target = w;
debug_log("added gid %u ('%s') target", w->gid, w->name);
return w;
}
// find or create a new target
// there are targets that are just aggregated to other target (the second argument)
static struct target *get_apps_groups_target(const char *id, struct target *target, const char *name) {
int tdebug = 0, thidden = target?target->hidden:0, ends_with = 0;
const char *nid = id;
// extract the options
while(nid[0] == '-' || nid[0] == '+' || nid[0] == '*') {
if(nid[0] == '-') thidden = 1;
if(nid[0] == '+') tdebug = 1;
if(nid[0] == '*') ends_with = 1;
nid++;
}
uint32_t hash = simple_hash(id);
// find if it already exists
struct target *w, *last = apps_groups_root_target;
for(w = apps_groups_root_target ; w ; w = w->next) {
if(w->idhash == hash && strncmp(nid, w->id, MAX_NAME) == 0)
return w;
last = w;
}
// find an existing target
if(unlikely(!target)) {
while(*name == '-') {
if(*name == '-') thidden = 1;
name++;
}
for(target = apps_groups_root_target ; target != NULL ; target = target->next) {
if(!target->target && strcmp(name, target->name) == 0)
break;
}
if(unlikely(debug_enabled)) {
if(unlikely(target))
debug_log("REUSING TARGET NAME '%s' on ID '%s'", target->name, target->id);
else
debug_log("NEW TARGET NAME '%s' on ID '%s'", name, id);
}
}
if(target && target->target)
fatal("Internal Error: request to link process '%s' to target '%s' which is linked to target '%s'", id, target->id, target->target->id);
w = callocz(sizeof(struct target), 1);
strncpyz(w->id, nid, MAX_NAME);
w->idhash = simple_hash(w->id);
if(unlikely(!target))
// copy the name
strncpyz(w->name, name, MAX_NAME);
else
// copy the id
strncpyz(w->name, nid, MAX_NAME);
// dots are used to distinguish chart type and id in streaming, so we should replace them
strncpyz(w->clean_name, w->name, MAX_NAME);
netdata_fix_chart_name(w->clean_name);
for (char *d = w->clean_name; *d; d++) {
if (*d == '.')
*d = '_';
}
strncpyz(w->compare, nid, MAX_COMPARE_NAME);
size_t len = strlen(w->compare);
if(w->compare[len - 1] == '*') {
w->compare[len - 1] = '\0';
w->starts_with = 1;
}
w->ends_with = ends_with;
if(w->starts_with && w->ends_with)
proc_pid_cmdline_is_needed = true;
w->comparehash = simple_hash(w->compare);
w->comparelen = strlen(w->compare);
w->hidden = thidden;
#ifdef NETDATA_INTERNAL_CHECKS
w->debug_enabled = tdebug;
#else
if(tdebug)
fprintf(stderr, "apps.plugin has been compiled without debugging\n");
#endif
w->target = target;
// append it, to maintain the order in apps_groups.conf
if(last) last->next = w;
else apps_groups_root_target = w;
debug_log("ADDING TARGET ID '%s', process name '%s' (%s), aggregated on target '%s', options: %s %s"
, w->id
, w->compare, (w->starts_with && w->ends_with)?"substring":((w->starts_with)?"prefix":((w->ends_with)?"suffix":"exact"))
, w->target?w->target->name:w->name
, (w->hidden)?"hidden":"-"
, (w->debug_enabled)?"debug":"-"
);
return w;
}
// read the apps_groups.conf file
int read_apps_groups_conf(const char *path, const char *file) {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/apps_%s.conf", path, file);
debug_log("process groups file: '%s'", filename);
// ----------------------------------------
procfile *ff = procfile_open(filename, " :\t", PROCFILE_FLAG_DEFAULT);
if(!ff) return 1;
procfile_set_quotes(ff, "'\"");
ff = procfile_readall(ff);
if(!ff)
return 1;
size_t line, lines = procfile_lines(ff);
for(line = 0; line < lines ;line++) {
size_t word, words = procfile_linewords(ff, line);
if(!words) continue;
char *name = procfile_lineword(ff, line, 0);
if(!name || !*name) continue;
// find a possibly existing target
struct target *w = NULL;
// loop through all words, skipping the first one (the name)
for(word = 0; word < words ;word++) {
char *s = procfile_lineword(ff, line, word);
if(!s || !*s) continue;
if(*s == '#') break;
// is this the first word? skip it
if(s == name) continue;
// add this target
struct target *n = get_apps_groups_target(s, w, name);
if(!n) {
netdata_log_error("Cannot create target '%s' (line %zu, word %zu)", s, line, word);
continue;
}
// just some optimization
// to avoid searching for a target for each process
if(!w) w = n->target?n->target:n;
}
}
procfile_close(ff);
apps_groups_default_target = get_apps_groups_target("p+!o@w#e$i^r&7*5(-i)l-o_", NULL, "other"); // match nothing
if(!apps_groups_default_target)
fatal("Cannot create default target");
apps_groups_default_target->is_other = true;
// allow the user to override group 'other'
if(apps_groups_default_target->target)
apps_groups_default_target = apps_groups_default_target->target;
return 0;
}
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