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// SPDX-License-Identifier: GPL-3.0-or-later
#include "dyncfg-internals.h"
#include "dyncfg.h"
void dyncfg_file_delete(const char *id) {
CLEAN_CHAR_P *escaped_id = dyncfg_escape_id_for_filename(id);
char filename[FILENAME_MAX];
snprintfz(filename, sizeof(filename), "%s/%s.dyncfg", dyncfg_globals.dir, escaped_id);
unlink(filename);
}
void dyncfg_file_save(const char *id, DYNCFG *df) {
CLEAN_CHAR_P *escaped_id = dyncfg_escape_id_for_filename(id);
char filename[FILENAME_MAX];
snprintfz(filename, sizeof(filename), "%s/%s.dyncfg", dyncfg_globals.dir, escaped_id);
FILE *fp = fopen(filename, "w");
if(!fp) {
nd_log(NDLS_DAEMON, NDLP_ERR, "DYNCFG: cannot create file '%s'", filename);
return;
}
df->dyncfg.modified_ut = now_realtime_usec();
if(!df->dyncfg.created_ut)
df->dyncfg.created_ut = df->dyncfg.modified_ut;
fprintf(fp, "version=%zu\n", DYNCFG_VERSION);
fprintf(fp, "id=%s\n", id);
if(df->template)
fprintf(fp, "template=%s\n", string2str(df->template));
char uuid_str[UUID_COMPACT_STR_LEN];
uuid_unparse_lower_compact(df->host_uuid.uuid, uuid_str);
fprintf(fp, "host=%s\n", uuid_str);
fprintf(fp, "path=%s\n", string2str(df->path));
fprintf(fp, "type=%s\n", dyncfg_id2type(df->type));
fprintf(fp, "source_type=%s\n", dyncfg_id2source_type(df->dyncfg.source_type));
fprintf(fp, "source=%s\n", string2str(df->dyncfg.source));
fprintf(fp, "created=%"PRIu64"\n", df->dyncfg.created_ut);
fprintf(fp, "modified=%"PRIu64"\n", df->dyncfg.modified_ut);
fprintf(fp, "sync=%s\n", df->sync ? "true" : "false");
fprintf(fp, "user_disabled=%s\n", df->dyncfg.user_disabled ? "true" : "false");
fprintf(fp, "saves=%"PRIu32"\n", ++df->dyncfg.saves);
fprintf(fp, "cmds=");
dyncfg_cmds2fp(df->cmds, fp);
fprintf(fp, "\n");
if(df->dyncfg.payload && buffer_strlen(df->dyncfg.payload) > 0) {
fprintf(fp, "content_type=%s\n", content_type_id2string(df->dyncfg.payload->content_type));
fprintf(fp, "content_length=%zu\n", buffer_strlen(df->dyncfg.payload));
fprintf(fp, "---\n");
fwrite(buffer_tostring(df->dyncfg.payload), 1, buffer_strlen(df->dyncfg.payload), fp);
}
fclose(fp);
}
void dyncfg_file_load(const char *d_name) {
char filename[PATH_MAX];
snprintf(filename, sizeof(filename), "%s/%s", dyncfg_globals.dir, d_name);
FILE *fp = fopen(filename, "r");
if (!fp) {
nd_log(NDLS_DAEMON, NDLP_ERR, "DYNCFG: cannot open file '%s'", filename);
return;
}
DYNCFG tmp = { 0 };
char line[PLUGINSD_LINE_MAX];
CLEAN_CHAR_P *id = NULL;
HTTP_CONTENT_TYPE content_type = CT_NONE;
size_t content_length = 0;
bool read_payload = false;
while (fgets(line, sizeof(line), fp)) {
if(strcmp(line, "---\n") == 0) {
read_payload = true;
break;
}
char *value = strchr(line, '=');
if(!value) continue;
*value++ = '\0';
value = trim(value);
if(!value) continue;
char *key = trim(line);
if(!key) continue;
// Parse key-value pairs
if (strcmp(key, "version") == 0) {
size_t version = strtoull(value, NULL, 10);
if(version > DYNCFG_VERSION)
nd_log(NDLS_DAEMON, NDLP_NOTICE,
"DYNCFG: configuration file '%s' has version %zu, which is newer than our version %zu",
filename, version, DYNCFG_VERSION);
} else if (strcmp(key, "id") == 0) {
freez(id);
id = strdupz(value);
} else if (strcmp(key, "template") == 0) {
tmp.template = string_strdupz(value);
} else if (strcmp(key, "host") == 0) {
uuid_parse_flexi(value, tmp.host_uuid.uuid);
} else if (strcmp(key, "path") == 0) {
tmp.path = string_strdupz(value);
} else if (strcmp(key, "type") == 0) {
tmp.type = dyncfg_type2id(value);
} else if (strcmp(key, "source_type") == 0) {
tmp.dyncfg.source_type = dyncfg_source_type2id(value);
} else if (strcmp(key, "source") == 0) {
tmp.dyncfg.source = string_strdupz(value);
} else if (strcmp(key, "created") == 0) {
tmp.dyncfg.created_ut = strtoull(value, NULL, 10);
} else if (strcmp(key, "modified") == 0) {
tmp.dyncfg.modified_ut = strtoull(value, NULL, 10);
} else if (strcmp(key, "sync") == 0) {
tmp.sync = (strcmp(value, "true") == 0);
} else if (strcmp(key, "user_disabled") == 0) {
tmp.dyncfg.user_disabled = (strcmp(value, "true") == 0);
} else if (strcmp(key, "saves") == 0) {
tmp.dyncfg.saves = strtoull(value, NULL, 10);
} else if (strcmp(key, "content_type") == 0) {
content_type = content_type_string2id(value);
} else if (strcmp(key, "content_length") == 0) {
content_length = strtoull(value, NULL, 10);
} else if (strcmp(key, "cmds") == 0) {
tmp.cmds = dyncfg_cmds2id(value);
}
}
if (read_payload) {
// Determine the actual size of the remaining file content
long saved_position = ftell(fp); // Save current position
fseek(fp, 0, SEEK_END);
long total_size = ftell(fp); // Total size of the file
size_t actual_size = total_size - saved_position; // Calculate remaining content size
fseek(fp, saved_position, SEEK_SET); // Reset file pointer to the beginning of the payload
// Use actual_size instead of content_length to handle the whole remaining file
tmp.dyncfg.payload = buffer_create(actual_size, NULL);
tmp.dyncfg.payload->content_type = content_type;
buffer_need_bytes(tmp.dyncfg.payload, actual_size);
tmp.dyncfg.payload->len = fread(tmp.dyncfg.payload->buffer, 1, actual_size, fp);
if (content_length != tmp.dyncfg.payload->len) {
nd_log(NDLS_DAEMON, NDLP_WARNING,
"DYNCFG: content_length %zu does not match actual payload size %zu for file '%s'",
content_length, actual_size, filename);
}
}
fclose(fp);
if(!id) {
nd_log(NDLS_DAEMON, NDLP_ERR,
"DYNCFG: configuration file '%s' does not include a unique id. Ignoring it.",
filename);
dyncfg_cleanup(&tmp);
return;
}
tmp.dyncfg.status = DYNCFG_STATUS_ORPHAN;
tmp.dyncfg.restart_required = false;
dyncfg_set_current_from_dyncfg(&tmp);
dictionary_set(dyncfg_globals.nodes, id, &tmp, sizeof(tmp));
// check if we need to rename the file
CLEAN_CHAR_P *fixed_id = dyncfg_escape_id_for_filename(id);
char fixed_filename[PATH_MAX];
snprintf(fixed_filename, sizeof(fixed_filename), "%s/%s.dyncfg", dyncfg_globals.dir, fixed_id);
if(strcmp(filename, fixed_filename) != 0) {
if(rename(filename, fixed_filename) != 0)
nd_log(NDLS_DAEMON, NDLP_ERR,
"DYNCFG: cannot rename file '%s' into '%s'. Saving a new configuraton may not overwrite the old one.",
filename, fixed_filename);
}
}
void dyncfg_load_all(void) {
DIR *dir = opendir(dyncfg_globals.dir);
if (!dir) {
nd_log(NDLS_DAEMON, NDLP_ERR, "DYNCFG: cannot open directory '%s'", dyncfg_globals.dir);
return;
}
struct dirent *entry;
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type == DT_REG || entry->d_type == DT_LNK) && strendswith(entry->d_name, ".dyncfg"))
dyncfg_file_load(entry->d_name);
}
closedir(dir);
}
// ----------------------------------------------------------------------------
// schemas loading
static bool dyncfg_read_file_to_buffer(const char *filename, BUFFER *dst) {
int fd = open(filename, O_RDONLY | O_CLOEXEC, 0666);
if(unlikely(fd == -1))
return false;
struct stat st = { 0 };
if(fstat(fd, &st) != 0) {
close(fd);
return false;
}
buffer_flush(dst);
buffer_need_bytes(dst, st.st_size + 1); // +1 for the terminating zero
ssize_t r = read(fd, (char*)dst->buffer, st.st_size);
if(unlikely(r == -1)) {
close(fd);
return false;
}
dst->len = r;
dst->buffer[dst->len] = '\0';
close(fd);
return true;
}
static bool dyncfg_get_schema_from(const char *dir, const char *id, BUFFER *dst) {
char filename[FILENAME_MAX + 1];
CLEAN_CHAR_P *escaped_id = dyncfg_escape_id_for_filename(id);
snprintfz(filename, sizeof(filename), "%s/schema.d/%s.json", dir, escaped_id);
if(dyncfg_read_file_to_buffer(filename, dst))
return true;
snprintfz(filename, sizeof(filename), "%s/schema.d/%s.json", dir, id);
if(dyncfg_read_file_to_buffer(filename, dst))
return true;
return false;
}
bool dyncfg_get_schema(const char *id, BUFFER *dst) {
if(dyncfg_get_schema_from(netdata_configured_user_config_dir, id, dst))
return true;
if(dyncfg_get_schema_from(netdata_configured_stock_config_dir, id, dst))
return true;
return false;
}
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